mouth cleaning tool and electrical device for oral hygiene

专利摘要:
"NOZZLE CLEANING TOOL FOR NOZZLE HYGIENE DEVICE" The present invention relates to a fixing section (100), in particular, a brush section suitable for connection to a cable section (200) of a hygiene device oral. The fastening section has a fastening compartment (150) with a first coupling structure (152) suitable for establishing a connection with a second coupling structure (252) of the cable section, at least one functional element (130) is mounted in the fixation compartment for driven movement, a movement transmitter (110) that extends into a cavity formed inside the fixation compartment, the movement transmitter being functionally connected to one end with the functional element (130), and a first magnetic coupling element (120) disposed at another end of the motion transmitter, the first magnetic coupling element comprising at least one permanent magnet or a magnetizable element suitable for establishing a magnetic connection with a second magnetic coupling element provided in the cable section.
公开号:BR112014001477B1
申请号:R112014001477-9
申请日:2012-07-25
公开日:2021-02-23
发明作者:Joern Utsch；Norbert Schaefer
申请人:Braun Gmbh；
IPC主号:

专利说明:

FIELD OF THE INVENTION
[0001] The present invention relates to a fixing section for an oral hygiene device, a cable section for an oral hygiene device and an oral hygiene device. BACKGROUND OF THE INVENTION
[0002] It is well known that electrical devices for oral hygiene, in particular electric toothbrushes, may have separably mounted replacement accessories, such as a replacement toothbrush head for an electric toothbrush. It is also known that the coupling between the accessory and a cable of the oral hygiene device can be carried out by mechanical means, such as a pressure snap hook provided in the accessory, which fits under pressure in a groove provided in the cable. Mechanical couplings often have a certain opening or go between the coupling partners due to tolerances between the coupling partners. Such openings or gaps tend to generate unwanted loud noise during the operation of the device.
[0003] Therefore, there is a desire to provide an improved coupling between an attachment section of an oral hygiene tool and a handle section of an oral hygiene device and, in particular, an attachment section of an oral hygiene tool and a cable section that allows for this improved coupling. SUMMARY OF THE INVENTION
[0004] In some embodiments, a fixation section is provided, in particular, a brush section, suitable for connection to a cable section of an oral hygiene device, this fixation section having a fixation compartment with a first suitable coupling structure to establish a connection with a second cable section coupling structure, with at least one functional element being mounted in the fixation compartment for the drive movement, a movement transmitter that extends in a cavity formed in the interior of the fixation compartment, the movement transmitter being operationally connected to one end of the functional element, and a first magnetic coupling element disposed at another end of the moving transmitter, the first magnetic coupling element comprising at least a permanent magnet or a magnetizable element suitable for establishing a magnetic connection with a second magnetic coupling element provided in the cable section.
[0005] In some modalities, a section of cabod is provided with a mouth hygiene device for connection, optionally, separable connection, with a securing section that has a second magnetic coupling element arranged on a drive shaft arranged to establish a connection magnetic with a first magnetic coupling element provided in the fixing section in a fixed state, and a second coupling structure to further establish a connection with a first coupling structure provided in the fixing section, the second magnetic coupling element comprising a permanent magnet that fits into a cylinder with a diameter of at least about 4.5 mm and a length of about at least 4.5 mm.
[0006] In some embodiments, a fixation section is provided, in particular, a brush section, suitable for connection to a cable section of an oral hygiene device, having a fixation compartment that presents a first coupling structure suitable for establish a connection with a second coupling structure of the cable section, a movement transmitter that extends in a cavity formed inside the fixation compartment, the movement transmitter being connected in a non-separable way to one end of the cable section fixing, in particular, to a functional element mounted in the fixing compartment for the drive movement, and a first magnetic coupling element disposed at another end of the motion transmitter, the first magnetic coupling element comprising at least one magnet permanent or a magnetizable element suitable for establishing a magnetic connection with a second magnetic coupling provided in the cable section, the first magnetic coupling element being optionally retracted from one end of the fastening compartment designed for coupling with the cable section, in particular, by a distance of at least about 5.0 mm.
[0007] Additionally, in some modalities, an electrical device for oral hygiene is provided that comprises at least one fixation section, as proposed, and a cable section. BRIEF DESCRIPTION OF THE DRAWINGS
[0008] The fixing section and the cable section, as proposed, will be further elucidated by reference to the exemplifying modalities and figures. In the figures
[0009] Figure 1 is a perspective view of an oral hygiene device in the form of an electric toothbrush; Figure 2 is a longitudinal lateral cross-section through an exemplary fixation section; Figure 3 is a longitudinal cross section in cross section through the fixation section shown in Figure 2; Figure 4 is a longitudinal cross-section through an exemplary cable section; Figure 5 is a longitudinal section through an upper portion of an exemplary oral hygiene device; Figures 6A to 6D show four exemplary configurations of the first and second magnetic coupling elements; Figure 7 shows results of the force simulation between the coupling partners of the four configurations shown in figures 6A to 6D; Figure 8 is a cross-section through an upper portion of a drive shaft of an exemplary cable section; Figure 9 is a cross-section through an upper portion of a drive shaft of an exemplary cable section; Figure 10 is a cross-section through an upper portion of a drive shaft of an additional exemplary cable section; Figure 11 is a cross-section through a lower portion of a motion transmitter of an exemplary securing section; Figure 12A is a representation of a side view of an exemplary embodiment of a fixation section, as proposed, the fixation compartment being transparent; Figure 12B is a representation of the modality of the fixing section, as shown in Figure 12A, but seen from the rear (the front side being the side where the functional element is mounted); e Figure 12C is a longitudinal section through the fastening section shown in Figures 12A and 12B, seen from the rear of the fastening section. DETAILED DESCRIPTION OF THE INVENTION
[00010] One aspect of the present description relates to a connection, in particular, a removable connection, between a securing section and a cable section of an oral hygiene device (in particular electrical), at least a connection (in particular, a connection established between the movably mounted parts that are activated during operation and are intended to transfer movement of a motor in the cable section to a functional element in the clamping section) between the clamping section and the section cable, is produced as a magnetic coupling. In general, mechanical couplings have gaps or gaps based, inherently, on the tolerance between the coupling partners, so that the coupling partners can move in relation to each other when the respective connection is established between the parts to be triggered during operation. Such a mechanical connection is then liable to generate unwanted noise during operation. A magnetic coupling can be designed inherently with less slack, so that a magnetic coupling is likely to produce less noise.
[00011] [029] In some embodiments, the fixing section, as proposed, comprises a first magnetic coupling element that has at least one permanent magnet or a magnetizable element. The first magnetic coupling is arranged to establish a magnetic connection with a second magnetic coupling element provided on a cable section in a fixed state.
[00012] In some embodiments, the securing section may additionally comprise a securing compartment, a functional element mounted to drive the movement in the securing compartment and a movement transmitter. The movement transmitter can be coupled, at one end, to the functional element to transfer movement to the functional element and, at the other end, it can be equipped with the first magnetic coupling element. The movement transmitter can, in particular, extend into a cavity formed inside the fixation compartment. In some embodiments, the functional element may be a working element, such as a brush head for cleaning teeth. In some embodiments, the securing compartment may have a first coupling structure designed to establish an additional connection to a second coupling structure provided in the cable section.
[00013] On the one hand, a magnetizable element (for example, a magnetizable element of steel or iron) can be produced at relatively low costs, and a fixing section for disposal after some time of use can then be produced at a cost relatively low. This is particularly interesting in cases where the costs of a permanent magnet would be equal to the costs of the entire fastening section. On the other hand, a permanent magnet in the clamping section, together with a permanent magnet in the cable section, can provide a higher coupling force than a combination of a permanent magnet and a magnetizable element in the same construction volume.
[00014] In some embodiments, the first magnetic coupling element comprises a protective cover that protects the first magnetic coupling element against corrosion or abrasion. In such embodiments, the protective cover can be resistant to abrasion to the point that during a typical life cycle of the clamping section, the protective cover remains intact. As an oral hygiene device is used in a humid environment and usually with abrasive and / or corrosive chemicals, such as mouthwashes or toothpaste, a thin coating, such as a gold coating 10 micrometers thick, it can be worn out in a very short period. A protective cover produced from a metal layer, ceramic layer, glassy layer, abrasion resistant plastic or resin layer with a thickness of 20 μm or more can be used, optionally about 30 μm or more, more optionally 40 μm or more, even more optionally, of about 50 μm or more. In some embodiments, the protective cap may be 60 μm or more thick, 70 μm or more, 80 μm or more, 90 μm or more, 100 μm or more, 150 μm or more or 200 μm or more, and / or any thickness within the range or including the values provided above or any range including or within the values provided above. In some embodiments, the protective cover is produced with an element essentially in the shape of a bowl that can be assembled by gluing, pressure fitting, crimping, retractable fitting, stamping, welding, pressure or any combination thereof. The protective cover, in some specific embodiments, is produced as a plate or disc that can be glued to the magnetic coupling element. In some embodiments, a protective cap manufactured in a thermoforming, punch stamping or deep stamping process is used.
[00015] In general, the protective cover can be designed to be resistant to abrasion for a temporary period that corresponds to a period of use typical of the fastening section. The typical usage period can be about three months with three call periods of two to four minutes a day, so the operation usage period can be from about 540 minutes to about 1,080 minutes. However, the protective cover can be designed to be resistant to abrasion for longer or shorter periods of time. In particular, in some embodiments, an abrasion-resistant protective cover may be used for periods longer than 1,080 minutes, for example, 2,000 minutes, 4,000 minutes, 10,000 minutes or even longer periods.
[00016] In some embodiments, the first magnetic coupling element is accommodated, at least partially, in a recess or cavity provided in the motion transmitter. In some embodiments, the motion transmitter may comprise a support element in which the first magnetic coupling element is accommodated, at least partially. In some embodiments, the motion transmitter may comprise a rod element, in particular, a rod element produced from metal, such as stainless steel. Such a metal rod can provide stability not provided by a motion transmitter that is produced entirely from a plastic material. The rod element, in some embodiments, can be mounted articulated to the functional element, in particular, in a mounting location that is displaced with respect to an axis around which the functional element will be driven during operation. Alternatively or additionally, the rod element can be pivotally mounted on a support element, for example, a support element as mentioned above, which has a recess that accommodates, at least partially, the magnetic coupling element. It is likely that the assembly of the rod element joint supports the relative movement between the rod element and the functional element or the support element, respectively.
[00017] In some embodiments, the securing section, the protective cover, the first magnetic coupling element and / or the motion transmitter have a centering structure that is designed to support at least the centering of the first magnetic coupling element with the second magnetic coupling element during a clamping process.
[00018] In some embodiments, the first magnetic coupling element may have at least one indentation or a groove that is filled with plastic material, in particular, with injection-molded plastic material. For example, the support element mentioned above can be made in a plastic injection molding step, the first magnetic coupling element being an insertion element. Then, a manufacturing step of, for example, snapping the first magnetic coupling element to a support element, can be discarded and, in addition, the injection molding step can lead to smaller gaps or gaps between the first magnetic coupling element and the support element, than in the case of a posterior assembly of these two parts.
[00019] In one embodiment, the securing section is arranged so that the motion transmitter is mounted free of any elements of return force that influence the behavior of a resonant actuator in the cable section provided with an additional spring. Since the springs typically have tolerances, a spring in the clamping section designed for coupling with a drive shaft of a resonant actuator in a cable section could contribute to the mass-spring system that determines the resonant frequency of the resonant actuator. In addition, a spring in the clamping section can also produce additional noise when in operation, due to the necessary tolerance for mounting the spring.
[00020] In some embodiments, a cable section for connection, optionally removable connection with a fixing section, as proposed above, comprises a second magnetic coupling element arranged on a drive shaft, the second magnetic coupling element it is arranged to establish a magnetic connection with a first magnetic coupling element provided in the fixing section and a second coupling structure to establish a connection, in particular, a mechanical connection (for example, a shape-fitting connection or a plug-in connection) force) with a first coupling structure provided in the fastening section, in particular, in the fastening compartment. The second magnetic coupling element can comprise at least one permanent magnet or a magnetizable element.
[00021] In at least some embodiments, a cable section, as proposed, comprises a linear drive (ie, a resonant drive that provides a linear reciprocal movement or a DC motor that has a gear to convert a rotary movement into a movement linear oscillatory) to drive the drive axis in a linear oscillation in a longitudinal direction (generally parallel to a longitudinal axis of the drive axis or coinciding with a longitudinal axis of the drive axis). In some embodiments, the linear drive can provide a linear oscillatory range of motion in the range of about ± 0.1 mm to about ± 2.0 mm, in particular, arranged between about ± 0.5 mm to about ± 1.5 mm, optionally, in the range between about ± 0.75 mm to about ± 1.25 mm, more optionally, in the range between about ± 0.9 mm to about ± 1.1 mm and, still more optionally, a linear oscillatory range of motion of about ± 1.0 millimeters. In some embodiments, the securing section comprises a set of gears that converts the linear movement provided by the drive shaft and transferred to the movement transmitter in an oscillatory rotation that has a maximum angular deflection in the range of ± 5 degrees to ± 40 degrees, in in particular, in the range of about ± 10 degrees to ± 30 degrees, optionally, in the range of about ± 15 degrees to about ± 25 degrees and, more optionally, about ± 20 degrees (where angular deflection is measured in an unloaded state of the functional element).
[00022] In general, the longitudinal axis, as mentioned in all modalities, extends along a longitudinal dimension or in the direction of the length of the drive shaft, or is parallel to a longitudinal axis of the drive shaft, or coincides with a longitudinal axis of the drive shaft. The drive shaft means the drive shaft of the motor or extensions thereof.
[00023] In one embodiment, the second magnetic coupling element may have a protective cover that protects the second magnetic coupling element against corrosion. The protective cover can be resistant to abrasion to the point that during a typical cable section life cycle, the protective cover remains intact. As an oral hygiene device is used in a humid environment and usually with abrasive and / or corrosive chemicals, such as mouthwashes or toothpaste, a thin layer, such as a 10 micrometer thick tin coating, it can be worn out in a very short period. A protective cover produced from a metal layer, ceramic layer, glass layer, abrasion resistant plastic or resin layer 20 μm thick or more, optionally about 30 μm or more, more optionally 40 μm or more, even more optionally, of about 50 μm or more, may be more suitable. In some embodiments, the protective cover may be 60 μm or more thick, 70 μm or more, 80 μm or more, 90 μm or more, 100 μm or more, 150 μm or more or 200 μm or more, and / or any thickness within or including the values provided above or any ranges including or within the values provided above. The protective cover can be produced as an essentially bulge shaped element, which can be assembled by gluing, pressure fitting, crimping, retractable fitting, stamping, welding, fitting or any combination thereof. The protective cover is, in a specific modality, produced as a plate or disc that can be glued to the magnetic coupling element. The protective cover for the second magnetic coupling can be configured similarly to the protective cover described so far with respect to the first magnetic coupling.
[00024] In one embodiment, the second magnetic coupling element is accommodated, at least partially, in a recess provided on the drive shaft. In one embodiment, the cable section, the protective cover, the second magnetic coupling element and / or the drive shaft may have a centering structure that is intended to support at least the centering of the first magnetic coupling element with the second magnetic coupling element during a clamping process.
[00025] In some embodiments, an oral hygiene device may comprise at least one attachment section, as proposed, and this may additionally comprise a section of cable that has a second magnetic coupling element and a second coupling structure for establish a connection with the first coupling structure provided in the fastening section. In some embodiments, an oral hygiene device may comprise at least one fixation section, as proposed and, in addition, a cable section according to a cable section proposed in the previous paragraph. * In some embodiments, the cable section comprises a drive that has a drive shaft arranged to provide linear oscillatory movement during operation, and the contact faces of the magnetic coupling elements are arranged essentially perpendicular to the direction of linear movement.
[00026] In some embodiments, as will be explained in more detail below, the magnetic coupling between the first and second magnetic coupling elements is designed to decouple, at least partially, in the case of a displacement force applied to the magnetic connection, to exceed a limit force. This at least partial decoupling of the magnetic coupling partners can then interrupt the transfer of motion and generate noise, which can be perceived by a user who is then informed about a very high load.
[00027] As an example, in case the implement for oral hygiene is an electric toothbrush and the fixation is a replaceable brush head that has as a functional element a bristle bracket mounted for oscillatory rotation, a magnetic coupling between a motor in the cable section of the oral hygiene device and a movement transmitter in the clamping section must be in a coupled state for the typical displacement forces that occur during operation (ie brushing of the teeth, in an exemplary case). The typical displacement forces that occur during brushing between the first and second magnetic coupling elements can, in particular, be generated due to friction between the treatment elements, (for example, bristles) mounted on the support and the soft tissue or hard of the oral cavity (for example, the teeth or gums). This friction increases with the pressure force with which the functional element (for example, the brush head) is applied to the soft or hard tissue (for example, the teeth). Typical values of applied pressure force can be in the range of about 1.5 Newton (N) to about 3.5 N (pressure forces below this range are not typically used or do not lead to a treatment result appropriate, and pressure values above that range can potentially cause discomfort and even injury), in particular, in the range of about 2 and N 3 N. For the above oscillating brush head, it was found that the force of displacement acting on the magnetic coupling can then be greater than 5 N and, in particular, greater than 6 N and, more particularly, in the range of about 6.5 N to about 8.0 N. Higher displacement forces can be due to an excessively high pressure force applied by the user or due to the bristles being stuck between the teeth. In both cases, it may be reasonable for the magnetic coupling to be arranged to decouple a displacement force above the permissible displacement force and maximum occurrence. First, it can help to indicate to the user that a very high pressure force is being applied, since the decoupling can be perceived by the user. Second, such decoupling is likely to reduce the pain that can occur if trapped bristles are pulled out of the teeth when the magnetic coupling withstands high displacement forces. In both cases, decoupling is likely to lead to greater protection of the hard and soft tissues against abrasion and other types of injury. In this way, a limit force can be defined as 5 N, 5.5 N, 6 N, 6.5 N, 7 N, 7.5 N, 8 N, 8.5 N, 9 N, 9. 5 N , or 10 N, in particular the limit force can be defined as a value of at least 6.5 N, optionally at least 7 N, more optionally at least 7.5 N and even more optionally at least 8 N. As will be seen below, the limit force can be defined, in particular, by designing the magnetic coupling accordingly, for example, choosing the dimensions of the first and second magnetic coupling elements, choosing the respective materials from which the first and second coupling elements are manufactured, or choosing a gap between the first and second magnetic coupling elements
[00028] Although the design of the magnetic coupling is proposed here so that the magnetic coupling is broken when a displacement force above a limit force is applied, the example above was calculated experimentally for bristle supports mounted for oscillatory rotation activated in the compartment of fixation. While it is not excluded that other functional elements may result in the same limit force, another value of limit force can be defined as preferential based on experimental investigation of other functional elements or another intended oral hygiene application, for example , tongue cleaning or gum massage.
[00029] In some embodiments, the securing section has a first magnetic coupling element that comprises a magnetizable element, which, in particular, can be produced from stainless steel, so that an additional protective cover could be discarded, being that the magnetizable elements fit into a cylinder at least about 4.5 mm in diameter and at least about 4.5 mm in length. Optionally, the diameter can be at least about 5.0 mm, in addition, at least about 5.5 mm. Optionally, the length can be at least about 5.5 mm, in addition, at least about 6.5 mm.
[00030] In some embodiments, the cable section has a second magnetic coupling element that comprises a permanent magnet, in particular, produced from NdFeB, with the permanent magnet fitting into a cylinder of about at least 4, 5 mm in diameter and at least 4.5 mm in length. Optionally, the diameter can be at least about 5.0 mm, in addition, at least about 5.5 mm. Optionally, the length can be at least about 5.0 mm, in addition, at least about 5.5 mm.
[00031] In some embodiments, the movement transmitter is connected in a non-separable way to the fixing section, in particular, to a functional element mounted to drive the movement.
[00032] In the following, a detailed description of several exemplifying modalities will be presented. It should be noted that all the characteristics described in the present description, being presented in the previous description of more general modalities or in the following description of the exemplifying modalities, although they can be described in the context of a specific modality, are obviously presented as individual characteristics that they can be combined with all the other features presented, as long as this does not contradict the essence and scope of the present description. In particular, all elements presented for each of the first and second magnetic coupling elements can also be applied to the other.
[00033] Figure 1 is a perspective representation of an exemplary model of an oral hygiene device 1, produced here as an electric toothbrush. The oral hygiene device 1 comprises a cable section 200 and a fixation section 100. In the present invention, the fixation section 100 is produced as a removable brush section. The fastening section 100 has a functional element 130, produced in the present invention as a brush head, the functional element 130 being movably mounted in a fastening compartment 150, so that the functional element 130 can be driven in an oscillatory rotation (as shown with the Double Arrow 21) around an axis of rotation R that can be perpendicular to the longitudinal axis L of the clamping section 100. Instead of being produced as an electric toothbrush, the device oral hygiene can be produced as a tongue scraper (electric), a dental floss device (electric), an interdental cleaner (electric) etc. The fixing section can then be produced as a tongue scraper section, a dental floss section, an interdental cleaning section, etc. The functional element can therefore be produced as a tongue scraper head, a dental floss head, an interdental cleaning head, etc.
[00034] Figure 2 is a lateral cross-section through the fixing section 100, taken along a longitudinal axis of the fixing section 100. The fixing section 100 comprises the fixation compartment 150 and the functional member 130, which is movably attached to the fixing compartment 150.
[00035] The functional element 130 can comprise a support element 131 on which a plurality of cleaning elements 133 can be mounted to clean and massage parts of the oral cavity, such as teeth and gums. The support element 131 can be mounted in the fixture compartment 150 by a mounting axis 132 for oscillatory rotation driven around an axis of rotation R which can be essentially perpendicular to the longitudinal axis (reference number L in Figure 1) of the section fastening 100.
[00036] The clamping section 100 may additionally comprise a movement transmitter 110 disposed within a cavity 159 formed within the clamping compartment 150. The movement transmitter 110 can be functionally connected to functional element 130, as will be explained in more detail with reference to Figure 3. In general, and applicable to all modalities, "functionally connected" should mean a connection that is not intended to be disconnected and that should allow the movement transmitted through the motion transmitter to be transferred to the functional element. The movement transmitter 110 is arranged to transmit a linear oscillatory movement to the functional element 130, the linear oscillatory movement being generally parallel to the longitudinal axis of the clamping section 100 (as indicated by the double arrow A). This linear oscillatory movement can be provided by a drive shaft of a cable section, when the fastening section 100 is in a fixed state, as will be explained in more detail with reference to Figure 5.
[00037] The motion transmitter 110 may comprise a recess 112 produced as a blind hole provided at a first end 110A proximal to the opening of the cavity 159, the opening at the end of the securing section 100 (i.e., the first end 110A of the movement transmitter 110 is distal to the functional element 130). A first magnetic coupling element 120 is arranged in the recess 112. In general and, as mentioned above with respect to all the described elements, applicable to all modalities, the first magnetic coupling element 120 can be produced as a permanent magnet or a magnetizable element, such as a steel block or magnetizable iron. Typically, austenitic steel is not magnetizable, whereas martensitic or ferritic steel is typically magnetizable. The first magnetic coupling element 120 has a coupling side 121 which is oriented towards the opening provided at the distal end of the fastening section 100. In general and applicable to all modes, the coupling side 121 can be retracted from the opening at the end of the fixation compartment intended for coupling with a cable section, so that the magnetic connection is established in a longitudinal position within the fixation compartment, in particular, this longitudinal location being retracted by a value located in the range between about 0.5 cm to about 5.0 cm, for example, 1.0 cm, 1.5 cm, 2.0 cm, 2.5 cm, 3.0 cm, 3.5 cm, 4.0 cm, 4.5 cm or any other value located in the mentioned range from the end of the fixing compartment, and the length of the fixing compartment can be in the range between about 3.0 cm to about 10.0 cm.
[00038] The first magnetic coupling element 120 can be attached to the movement transmitter 110 in any suitable manner. For example, the first magnetic coupling element 120 can be glued to the movement transmitter 110, it can be fitted into a recess, it can be attached by injection molding to at least a part of the movement transmitter on it or it can be fixed otherwise, as will be explained later.
[00039] In some exemplary embodiments, the first magnetic coupling element is produced as a magnetizable element of iron or steel. In the event that the first magnetic coupling element is made of a corrosive material, such as iron or an NdFeB material (from which relatively resistant magnets can be produced), at least the coupling side of the first magnetic coupling element may have a protective cover to protect the first magnetic coupling element from corrosion.
[00040] The protective cover can be produced as a coating, a top cover, a cover or a cover, as will be explained in detail below. In general and applicable to all modalities, any protective cover applied to a first or second magnetic coupling element can lead to a distance between the first and second magnetic coupling elements in the fixed state and, thus, to a reduction of the effective coupling force between the first and second magnetic coupling elements, so that a cover thickness of about or less than 0.5 mm could be chosen, optionally about or less than 0.4 mm, more optionally , of about or less than 0.3 mm, even more optionally, of about or less than 0.2 mm, and even more additionally, of about or less than 0.1 mm per cap. In other embodiments, the protective cover may comprise a thickness as described above. In the embodiment shown, the first magnetic coupling element 120 is glued to the recess. It may have an anti-corrosion coating applied to the side of the coupling 121 or a protective cover that can be glued on the side of the coupling 121. In the embodiment shown, it would be sufficient to attach a disk-shaped protective cover to the coupling side 121 of the first element magnetic coupling element 120, since the other sides of the first magnetic coupling element 120 are protected by the material surrounding the motion transmitter 110.
[00041] In general, and applicable to all modalities, the first magnetic coupling element 120 can be produced as a cylindrical element that has its cylinder axis oriented essentially parallel to the longitudinal axis of the fixing section 100, the diameter being of the cylinder can be chosen to be about or greater than 2 mm, optionally, about or greater than 3 mm, more optionally, about or greater than 4 mm, even more optionally, about or greater than 5 mm and, more optionally, about or greater than 6 mm, and / or any number or range including or within the values provided.
[00042] The cylindrical element can have any suitable height. In exemplary embodiments, the height can be chosen to be about or greater than 2 mm, optionally, about or greater than 3 mm, more optionally, about or greater than 4 mm, even more optionally, about of or greater than 5 mm, and even more optionally, of or greater than 6 mm, and / or any number or range including or within the values provided. In some exemplary embodiments, the height of the first magnetic coupling element can be chosen as being as high as the diameter. In other embodiments, the second magnetic coupling element can be designed to have any suitable shape. In this case, the smallest possible cylinder to which a first magnetic coupling element fits can have a diameter and a height as stated previously.
[00043] In some exemplary embodiments, the first magnetic coupling 120 is produced as a permanent magnet. In the event that the clamping section 100 is a disposable clamping section designed for detachable connection in relation to the cable section 200 of an oral care device, material costs can be considered an important aspect. The production of the first magnetic coupling element 120 and the second magnetic coupling element as permanent magnets can lead to a relatively high bonding force, while the production of the first magnetic coupling element 120 as a magnetizable element, such as a iron or steel, reduces the material costs of fastening section 100.
[00044] The fastening section 100, as shown in Figure 2, can additionally comprise an insertion element 151 which is pressed into the fastening compartment 150, thus forming the fastening compartment 150. The insertion element 151 can be equipped with a first coupling structure 152 designed to establish an additional coupling (that is, a coupling other than the magnetic coupling that will be established by the first magnetic coupling element 120) with a cable section of an oral hygiene device in a fixed state. In the exemplary embodiment shown, the first coupling structure 152 is produced by means of mechanical coupling, such as snap-fit hooks or spring elements for clamping the projections provided in the cable section. In other exemplary embodiments, the first coupling structure 152 can be produced by an additional magnetic coupling element. The longitudinal positions where the magnetic connection is established and where the additional connection (for example, mechanical connection) can be separated, in particular, by a distance in the range between about 0.5 cm to about 3.0 cm .
[00045] Figure 3 is a longitudinal cross-section in cross section through the exemplary fixation section shown in Figure 2, where the observation direction is directed towards the cleaning elements. As can be seen in Figure 3, the movement transmitter 110 is coupled to the functional element by a coupling pin 111 provided at a second end 110B of the movement transmitter 110. Coupling pin 111 establishes a coupling with a coupling section 134 provided in the support element 131 in a position that is eccentric with respect to the axis of rotation defined by the assembly axis 132. When the movement transmitter 110 is driven for a linear oscillatory movement, as indicated by the double arrow A, then the support member 131 will be driven for oscillatory rotation about the axis of rotation. As will also be explained further below, in some embodiments, the motion transmitter 110 is not associated with any return force element, such as a bias spring that would tilt the motion transmitter to a defined resting position whenever the motion transmitter is not being triggered.
[00046] Figure 4 shows a longitudinal section through a schematic cable section 200. In the example embodiment shown, the cable section 200 comprises a drive shaft 210 that functions as a moving motor part of a linear resonant actuator 260, the linear actuator 260 being disposed inside the cable compartment 250. During operation, the linear actuator 260 provides a linear oscillatory movement of the drive shaft 210 as indicated by the double arrow B. In the example shown, the drive axis The drive 210 can be extended by an extension element 219, which thus forms a part of the drive shaft 210. The extension element 219 can provide an increase in diameter with respect to the diameter of the drive shaft 210. A recess 211 can be provided in the extension element 219 to accommodate a second magnetic coupling element 220. Instead of being accommodated in the extension element 219, the second coupling element magnetic element 220 can certainly be attached directly to the drive shaft 210 or the drive shaft can be manufactured, at least in its tip portion, from a permanent magnetic material, the tip of which would then form the second magnetic coupling element 220. The second magnetic coupling element 220 has a coupling side 221 designed to contact the respective coupling side 121 (shown in Figure 2) of the first magnetic coupling element 120 (shown in Figure 2) of the fastening section , when it is being fixed. The coupling side of the first magnetic coupling element and the coupling side of the second magnetic coupling element can be flat or can, at least partially, be negative to each other.
[00047] In general and applicable to all modalities, the second magnetic coupling element 220 can be produced as a cylindrical element that has its cylinder axis essentially oriented parallel to the longitudinal axis of the drive axis, the diameter of the cylinder being can be chosen to be about or greater than 2 mm, optionally, about or greater than 3 mm, more optionally, about or greater than 4 mm, even more optionally, about or greater than 5 mm and, more optionally, about or greater than 6 mm or any individual number in this range or any ranges including or within the given values. Any suitable height of the cylindrical element can be chosen. For example, the height can be chosen to be about or greater than 2 mm, optionally, about or greater than 3 mm, more optionally, about or greater than 4 mm, even more optionally, about or greater than 5 mm, and even more optionally, of about or greater than 6 mm. In some exemplifying modalities, the height can be chosen as being as large as the diameter. In other embodiments, the second magnetic coupling element can be designed to have any suitable shape. In such a case, the smallest possible cylinder to which this second magnetic coupling element fits, can have a diameter and a height as stated previously.
[00048] In general, the cable section comprises a cable compartment in which a second coupling structure is produced to establish a connection with the first coupling structure provided in the fastening section. In the exemplary modality shown, cable section 200 has a cable compartment 250 comprising an upper cable compartment section 250A intended for coupling with the securing section, and a lower cable compartment section 250B intended to be held by the hand of a user. In the present invention, the upper cable compartment section 250A comprises an upper part 251 in which a second coupling structure 252 can be produced, the second coupling structure 252 being able to form an additional connection with the first coupling structure 152 ( shown in Figure 2) of the fixing section.
[00049] In some embodiments, the second coupling structure 252 and the first coupling structure may establish a coupling that is different from the connection established by the first magnetic coupling and the second magnetic coupling, or the coupling may be similar. For example, the coupling established by the first coupling structure and the second coupling structure can comprise a mechanical lock, magnetic lock, the like, or combinations thereof. In some embodiments having an upper compartment section 250A and a lower compartment section 250B, the upper compartment section 250A may be arranged to trigger the movement, for example, the upper compartment section 250A may perform an oscillatory rotation around the longitudinal axis, a longitudinal linear vibration, and / or a linear reciprocation along a direction generally parallel to a longitudinal axis of the drive axis during operation. In such embodiments, the fixing compartment, which is coupled to the upper compartment section 250A, performs a first movement during operation, for example, rotation around the longitudinal axis, longitudinal linear vibration, and / or a linear reciprocation, whereas the movement transmitter can drive the functional element for a second movement. The first and second movements are further described with reference to Figure 5. In some embodiments, the upper compartment section 250A is not triggered and remains stationary in relation to the lower compartment section 250B.
[00050] Figure 5 shows a longitudinal cross-section of a fastening section 100, and an upper compartment section of a cable section 200 in a fastened state. It is shown that the first and second magnetic coupling elements 120 and 220 have an established magnetic connection that couples the drive shaft 210 of the cable section 200 to the movement transmitter 110 of the clamp section 100, so that, during operation , a linear reciprocation of the drive shaft 210, as indicated by Double Arrow B will be transferred to functional element 130 via motion transmitter 110. In some embodiments, as the transmitted motion is a linear reciprocation, the magnetic coupling does not need to transmit a pivoting movement, so that the flat coupling sides of the first and second magnetic coupling elements are suitable.
[00051] In addition, the first and second coupling structures 152 and 252 established a second connection between the fastening compartment 150 and the cable compartment 250, so that the fastening section 100 is fixed in relation to the cable compartment 250. For those modalities in which the upper compartment section is activated in an oscillatory rotation around the longitudinal axis, in a longitudinal linear vibration, and / or in a linear reciprocation along a direction generally parallel to a longitudinal axis of the cable 200, the movement of the upper compartment section is transmitted to the fixing compartment via the connection provided between the first and second coupling structure 152 and 252.
[00052] As mentioned earlier, the movement transmitter 110 can be mounted free of any element of return force. It is known to use a return force element for a movement transmitter provided in a clamping section, in which case a mechanical connection must be established between the movement transmitter and the drive shaft, since, essentially, the Coupling force must first be overcome during the clamping process. Without a return force element, the motion transmitter would potentially be pushed in the opposite direction in the clamping process and the mechanical coupling could not be easily established. With respect to the described magnetic coupling, the first and the second magnetic coupling elements will attract each other when the clamping zone is connected to the cable section and the movement transmitter will then be moved towards the drive axis, so that a magnetic coupling is established, without the need to overcome any resistance first. In particular, with respect to a cable section comprising a resonant drive, where the resonance frequency is dependent on the spring-mass system, including a force element of return, like a spring acting on the motion transmitter, the tolerances on the spring would cause variations in the resonant frequency of the resonant drive for different fixings. In addition, the disposal of a return force element bears an efficient manufacturing cost.
[00053] In general and applicable to all modalities, each of the first and second magnetic coupling elements 120 and 220 can be produced as a permanent magnet or permanent magnet arrangement, or as a magnetizable element, as a iron or steel element or an arrangement of those elements. Any type of permanent magnet material can be used, for example, the high-energy SmCo or NdFeB materials, whether produced as sintered elements or bonded plastic elements, or any hard ferrite could be used as sintered strontium ferrite. Permanent magnetic elements bonded with plastic tend to have a relatively low magnetic flux density compared to, for example, sintered permanent magnets. Sintered NdFeB magnets have a relatively high magnetic flux density, but are also relatively expensive and prone to corrosion. Hard ferrite magnets are relatively inexpensive, and like ceramic materials, they are less prone to corrosion, but have only a limited magnetic flux density. In the case that one of the first and second magnetic coupling elements is produced as a magnetizable element, the other of the first and second magnetic coupling elements must be produced as a permanent magnet or permanent magnet arrangement. Permanent magnets are widely available, for example, from IBS Magnet, Berlin, Germany.
[00054] In some embodiments, at least one of the first and second magnetic coupling elements is produced from or consists, at least partially, of NdFeB material, in particular, sintered NdFeB material. In some of these embodiments, the second magnetic coupling element provided in the cable section is produced from or consists, at least in part, of sintered NdFeB material. The latter allows the production of the first magnetic coupling element as a relatively inexpensive magnetizable element, such as an iron or steel element or by a combination of such elements.
[00055] Permanent magnets prone to corrosion, such as sintered NdFeB magnets, may typically be available from a supplier, with a thin anticorrosive coating, such as a tin or nickel coating. Unfortunately, toothpaste can cause these standard coatings to abrasion very quickly during operation. Thus, it may then be necessary to provide these permanent magnets with a low abrasion and anti-corrosion cover to withstand conditions during the operation of an oral hygiene device. Various materials can be selected for the cover, such as less abrasive plastic materials (for example, for making a cold-built plastic cup), ceramics, metal sheets, glass, etc.
[00056] Some permanent magnet materials, such as NdFeB, have an operating temperature of 60 degrees Celsius, the operating temperature also being dependent on the specific dimensions of the permanent magnet. For such permanent magnets, anti-corrosion protection may not be applied by a plastic injection process during which temperatures of 200 degrees Celsius and higher may occur, as the magnet may lose its magnetization. The protective cover can be applied by molding (for example, a resin), glue (for example, a metal, ceramic, or glass disc), pressure, welding, etc., as already mentioned.
[00057] The magnetic coupling created by the first and second coupling elements must withstand a typical displacement force applied to the functional element, as explained above, so that the magnetic coupling does not separate when such force is applied. , a typical displacement force applied to the functional element can be up to 10 Newton, that is, the magnetic coupling must withstand a displacement force of up to a limit value of about 10 Newton, optionally, up to about 9 Newton, more optionally, up to about 8 Newton, even more optionally, up to about 7 Newton, more optionally, up to about 6 Newton, more optionally, up to about 5 Newton, and even more optionally, up to about 4 Newton or any value located or including the predicted values.
[00058] Figures 6A to 6D show four different examples of configurations S1 to S4 of the first and second magnetic coupling elements. Figure 7 shows the results of the simulation for the effective force, which exists between the coupling partners, in the coupled state, where the results are shown for different values of a span between the first and the second magnetic coupling elements, which reflects the difference of a protective cover on one or both magnetic coupling elements.
[00059] Figure 6A shows a first S1 configuration of a first magnetic coupling element 410A as a permanent cylindrical NdFeB magnet and a second magnetic coupling element 420A being a stainless steel cylinder. The diameter d1 of the permanent magnet of NdFeB 410A was set to 5 mm in the simulations and the height h1 was set to 5 mm. The diameter d2 of the stainless steel element was set to 5 mm and its height h2 was set to 4.5 mm. An arrow 419A indicates the direction of magnetization of the permanent magnet that has been defined here to be along the axis of the longitudinal cylinder. The total height of the magnetic coupling arrangement is therefore 9.5 mm plus the thickness of the span.
[00060] Figure 6B shows a second configuration S2, where the only difference from the first configuration S1 shown in Figure 1 is the direction of magnetization 419B of the first magnetic coupling element 410B which is chosen to be perpendicular to the longitudinal cylindrical axis.
[00061] Figure 6C shows a third S3 configuration of a first magnetic coupling element 410C and a second magnetic coupling element 420C. The second magnetic coupling element 420C is again assumed to be a stainless steel element, but here it is 3.5 mm high. The first 410C magnetic coupling element consists of a permanent NdFeB magnet that has a height of 5 mm and a diameter of 3.5 mm. The permanent NdFeB magnet is glued to an iron container in the shape of a bowl that has an external diameter of 5 mm and an internal diameter of 4 mm. The iron container consists of a hollow 4104C iron cylinder and a 4103C disc-shaped iron bottom. The 4103C disk-shaped iron bottom has a diameter of 5 millimeters and a height of 1.5 mm. The overall height of the magnetic coupling arrangement is therefore 9.5 mm plus the gap thickness. The direction of magnetization of the permanent magnet of NdFeB 4101C is indicated by the arrow 419C and is assumed to be along the longitudinal cylindrical axis.
[00062] Figure 6D shows a fourth configuration S4, where the second magnetic coupling element 420D is as in the third configuration S3, a stainless steel cylinder that has a height of 3.5 mm and a diameter of 5 mm. The first magnetic coupling element 410D consists of a first and a second permanent NdFeB magnet with two cylindrical halves 4101D and 4102D which are respectively oppositely magnetized in the longitudinal direction, as indicated by the demagnetizing arrows 4191D and 4192D, respectively. The cylinder formed by the two permanent NdFeB magnets of two halves has a height of 5 millimeters and a diameter of 5 millimeters. At the rear, the two permanent NdFeB magnets with two cylindrical halves are terminated by a 4103D iron bottom that has a disc shape, the disc having a height of 1.5 mm and a diameter of 5 mm. The overall height is again 9.5 mm plus the thickness of the span.
[00063] [081] In the simulations that were run, it was assumed that the remainder of the NdFeB permanent magnet material was 1370 mTesla. The properties of stainless steel 1.4021 were calibrated in relation to the measurements.
[00064] Figure 7 shows simulation results for the four configurations S1, S2, S3, and S4 described above with reference to figures 6A to 6D. The abscissa indicates the gap between the flat coupling sides of the first and second magnetic coupling elements in mm. The span material was assumed to be air. The ordinate indicates the force between the first and the second magnetic coupling elements in the coupled state in Newton. It can be noted that the S4 configuration in general leads to the highest limit force value of the displacement force that the magnetic coupling can withstand, for example, a span configuration of 0.1 mm S4, leads to a value of force- limit of about 7.3 Newton, in which the first and second magnetic coupling elements sedisocide. The other configurations lead to a coupling force of about 3.4 to 4.9 Newton in a span of 0.1 millimeters.
[00065] Figure 8 is a schematic cross-section through the upper portion of a drive shaft 510 with a second magnetic coupling element 520. In the embodiment shown, the second magnetic coupling element 520 is glued to a protective cover 525 which has, in general, a bulge shape. The protective cover 525 has one on its upper side, where a first magnetic coupling element 620 indicated by a dashed line approximates the second magnetic coupling element 520 during the fixing procedure, a centering structure 526 produced by a raised edge, so that a depression 527 is formed, in which the first magnetic coupling element 620 fits. The raised edge 526 can be tapered towards the first magnetic coupling element 620, to support the centering function. Although such a magnetic coupling already has a certain self-centering function, a structure supports the centering procedure and can avoid alignments between the first and second magnetic coupling elements. As previously stated, the first and second magnetic coupling elements can be exchanged with respect to the characteristics described, for example, Figure 8 can show an exemplary embodiment of a first magnetic coupling element.
[00066] Here, the protective cover is produced by a bowl that fully accommodates the second magnetic coupling element 520 and which extends at least partially over the drive shaft 510. In such an embodiment, the second magnetic coupling element 520 does not it needs to be additionally attached to the drive shaft 510, since the adhesive layer 524 secures the drive shaft 510 and the second magnetic coupling element 520. The thickness d3 of the adhesive layer 524 and the protective cover 525 must be chosen as thin as possible to avoid reducing the possible coupling force (see Figure 7). In fact, the 521 coupling side does not need to be glued to the protective cover, since the glue layer is sufficient to establish a fixed connection. The thickness d3 could be chosen to be about or less than 0.2 mm, optionally to be about or less than 0.15 mm, more optionally, to be about or less than 0.1 mm and , even more optionally, to be about or less than 0.05 mm or any number in and / or any range located in or including the values provided. The material of the protective cover could be a plastic material, a ceramic, a glass, or a metal (in particular, non-magnetizable). In an effort to reduce the thickness of the glue layer 524 and the protective cover, modalities are contemplated where the glue layer exists only on the sides of the drive shaft 510 and the second magnetic coupling element 520 but not between a coupling side 521 of the second magnetic coupling element 520 and a lower face 531 of the protective cover.
[00067] A protective cover produced from magnetizable material would, in the example shown in Figure 8, lead to a magnetic short-circuit between the magnetic north pole and the magnetic south pole of the permanent magnet and the available force between the coupling elements magnetic would be reduced
[00068] Figure 9 is a schematic representation of another embodiment showing the upper portion of a drive shaft 510A that has a recess 511A that accommodates a second magnetic coupling element 520A. The flexed wall portions 512A secure the second magnetic coupling element to the recess 511A. Before introducing the second magnetic coupling element 520A into the recess 511A, the wall portions 512A can be straightened to allow the insertion of the second magnetic coupling element 520A into the recess 511A. Then, the wall portions 512A can be curved, for example, with the use of a forming pattern, so that the second magnetic coupling element 520A is fixed in the recess. A protective cover 525A can cover the remaining opening, so that the second magnetic coupling element 520A is protected against corrosion. The protective cover 525A can be a resin or any suitable material, as described so far. In the event that the upper portion of the 510A drive shaft is produced from a metal (non-magnetizable) or another low abrasion material that can be formed in the stamping process, the 525A protective layer is effectively protected against scraping, and thus, it does not necessarily need to have high resistance to abrasion.
[00069] Figure 10 is a schematic representation of another embodiment showing the upper portion of a 510B drive shaft and a first 620B magnetic coupling element. The drive shaft 510B has a recess 511B that accommodates a second magnetic coupling element 520B, the second magnetic coupling element 520B extending above the driving shaft 510B, so that a step-like structure 526B is obtained. A protective cover 525B, which can be produced as a cold-built plastic cup, can be glued with a layer of glue 524B over the upper part of the second magnetic coupling element 520B and an upper part of the drive shaft 510B. The first magnetic coupling element 620B may comprise a depression 626B which is adapted to the step-like structure 526B, so that the step-like structure 526B and the depression 626B cooperate to support the centering of the first and second magnetic coupling elements 620B and 520B in the fixing process. Similar to the embodiment shown in Figure 8, the glue layer 524B may be missing between one side of the coupling 521B and a lower face 531B of the protective cover 525B in an effort to reduce the width of the gap between the first magnetic coupling element and the second magnetic coupling element. With regard to those modalities where the first magnetic coupling comprises a protective cover, similar arrangements can be provided.
[00070] Figure 11 is a schematic representation of the lower portion of a 610C motion transmitter in which a recess 611C is provided to accommodate a first magnetic coupling element 620C. The recess 611C can be equipped with 612C plug noses (produced here with 90 degrees recessed at the back), so that the first magnetic coupling element 620C that has respective depressions is (non-detachable) fixed to the transmitter. movement 610C by mechanical means, produced here as a means of fitting by pressure. On its front side (side that is closer to the cable than the rear), the 612C plug noses can be tapered in such a way that the first 620C magnetic coupling element can be pushed into position (engaged) during manufacture . The motion transmitter can be produced as a plastic part, while the first 620B magnetic coupling element can be produced as a non-corrosive steel part.
[00071] [089] In other embodiments, the protective cover produced as a bowl similar to the modality shown could be attached to the drive shaft by, for example, crimping, retractable fitting, welding, or pressure.
[00072] Figures 12A, 12B, and 12C show several views of another example of the fixation section, as proposed. Identical parts have equal reference numbers in these three views. In the following, reference is made to all three figures 12A, 12B, and 12C. Not all reference numbers are repeated in all figures.
[00073] The clamping section 700 has a clamping compartment 750, a functional element 730 produced as a brush head mounted in the clamping compartment 750 for oscillatory rotation driven around an axis of rotation R1, the axis of rotation being R1 is essentially perpendicular to a longitudinal extension direction of the clamping section 700. The clamping section 700 additionally comprises a motion transmitter 710 which extends into a cavity 759 formed within the clamping compartment 750.
[00074] Functional element 730 (in the present invention: brush head) has a support element 731 on which cleaning elements, such as tufts of bristles, can be mounted. The support element 731 can comprise a connection element 731A which, in particular, can be an integral part of the support element 731. The support element 731 can be mounted in the fastening compartment 750 by means of a fastening element 738, so that it cannot be easily separated from the 750 mounting compartment.
[00075] The motion transmitter 710 can comprise a support element 712 and a rod element 716. The support element 712 can, at least partially, accommodate a first magnetic coupling element 720 in a recess 711 at a first end 710A of the transmitter. movement 710. The rod element 716 can, in particular, be produced from metal, such as stainless steel, and can optionally be produced from a metal wire. A metal rod element can provide higher rigidity and elasticity than a respective piece of motion transmitter made from plastic material. A motion transmitter can be manufactured completely as a single integral part from plastic material, due to the high ductility of plastic compared to metal. The stem element 716 can have a first coupling part 716A that is mounted pivoted to the support element 712, and a second coupling part 716B that is mounted pivoted to a coupling section 739 provided in the coupling element 731A of the support element 731. At least one of the first or second coupling part 716A, 716B of the stem element 716 can be a curved stem section that can extend into a hole or blind hole in the support element 712 or the element coupling 731A, respectively. As can be seen particularly in Figure 12C, the first magnetic coupling element 720 can have at least one indentation or groove 729 which is filled with injection molded plastic 714, that is, the first magnetic coupling element 720 may have been directly molded with overlap with the support element 712. This molding step with direct overlap during manufacture results in minimal gaps or clearances between the first magnetic coupling element 720 and the support element 712. In general and applicable to all modalities, the the first magnetic coupling element can be directly molded with at least part of the motion transmitter, and a depression present in the first magnetic coupling element can be filled with injection-molded plastic material, so that the first magnetic coupling element is fixed rigidly to this injection molded part of the motion transmitter.
[00076] The support element 712 has protrusions 713 that extend in the direction of longitudinal extension of the edge of a contact surface 721 of the first magnetic coupling element 720, the protrusions can be tapered radially outwardly, in such a way that these protrusions form a centering structure that at least supports the centering of the magnetic connection between the first magnetic coupling element 720 and a second magnetic coupling element on a cable section when fixing the fastening section 700 The centering functionality it also performs in a fixed state, when the first and second magnetic coupling elements have been dissociated due to a very high displacement force, and a displacement force has disappeared, so that the first and second magnetic coupling elements are removed couple again due to the magnetic force between them. In particular, in cases where one of the first and the second magnetic coupling elements is a magnetizable element, a self-centered force between two permanent magnets is not present and an additional centering structure supports to align the two coupling partners and therefore way, optimize the coupling force.
[00077] In some embodiments, the cleaning elements arranged in the fastening section can be produced from a soft plastic material, such as rubber or a thermoplastic elastomer (TPE), or can be produced from a more rigid plastic material, such as polyamide (for example PA 6.12). The cleaning elements can have any type of suitable height, the height can be chosen to be between 0.2 mm (for example, for tongue sanitizing structures) and 30 mm, where a typical length of a cleaning element cleaning can range from about 2.0 mm to about 15.0 mm, optionally between about 5.0 mm and 11.0 mm. The cleaning elements can have any suitable diameter, the diameter being chosen to be in the range of about 0.2 millimeter to about 20 millimeter, optionally in the range of about 0.5 mm to about 8.0 mm.
[00078] Additionally, it should be noted that cleaning elements can comprise any suitable cleaning element and / or can comprise elements that are used to massage gums, clean the tongue, supply chemistry to an area of the oral cavity, for example, antimicrobial agents, unpleasant odor agents, flavor and aroma agents, antiplaque agents, antigengivitis agents, bleaching agents, or the like.
[00079] For example, in some embodiments, the cleaning elements may comprise tufts. Tufts can comprise a plurality of individual filaments that are firmly attached to the head. Such filaments can be polymeric and can include, for example, polyamide or polyester. The longitudinal and transverse dimensions of the filaments of the invention and the profile of the ends of the filaments can vary. In addition, the hardness, resilience and shape of the end of the filament can vary. Some examples of suitable dimensions include a length between about 3 mm and about 15 mm, or any individual number within that range. In addition, the filaments may include a substantially uniform cross-sectional dimension between about 100 and about 350 microns, or any individual number within that range. The ends of the filaments can have any suitable shape, whose examples include a soft tip, a rounded tip, a cuneiform tip, a pointed tip. In some embodiments, filaments may include a dye that indicates wear of the filaments, as described in US Patent No. 4,802,255. Some examples of filaments suitable for use with the brush are described in US Patent No. 6,199,242. Other suitable examples of bristles include textured bristles, for example, single and multiple component bristles (for example, bristles formed by the coextrusion of different polymers), ruffled bristles, gum massage bristles, bristles of different configurations (for example, bristles that multiple lumens), and / or combinations thereof.
[00080] Other suitable examples of cleaning elements include those described in US patent application publications No. 2002/0059685; 2005/0000043; 2004/0177462; 2005/0060822; 2004/0154112; US Patent Nos. 6,151,745; 6,058,541; 6,041,467; 6,553,604; 6,564,416; 6,826,797; 6,993,804; 6,453,497; 6,993,804; 6,041,467; and US patent applications with serial numbers 12 / 008,073, filed on January 8, 2008, entitled, "TOOTHBRUSHES" and 60 / 928,012, filed on May 7, 2007, entitled "ORAL HYGIENE IMPLEMENTS", all which are incorporated herein by reference in their entirety. In addition, any suitable arrangement of cleaning elements can be used. Some suitable examples include those described in US Patent Nos. 5,836,769; 6,564,416; 6,308,367; 6,108,851; 6,058,541; and 5,396,678.
[00081] In addition to bristles and / or tufts of bristles, cleaning elements may also include elastomeric structures, foams, combinations thereof, and the like. For example, cleaning elements may comprise elastomeric fins, as described in U.S. Patent No. 6,553,604 and US Patent Application Publication No. 2007 / 0251040A1. As yet another example, the cleaning elements may comprise bowl-shaped elements, as described in US patent publication No. 2004 / 0154112A1. In some embodiments, the cleaning elements may comprise a combination of elastomeric elements and bristles. As an example, a combination of fins and bristles can be used, a combination of elastomeric cup (s) and bristles can be used, and / or combinations of elastomeric elements either alone or in combination with bristles can be used. Combinations of elastomeric cleaning elements are described in U.S. Patent Publication No. 2009 / 0007357A1.
[00082] The cleaning elements and / or massage elements can be attached to the head in any suitable way. Conventional methods include stapling, tufting without anchors, and tufting with injection mold. For cleaning elements that comprise an elastomer, these elements can be formed integrally with each other, for example, having an integral base portion and extending outwardly or discreetly. Eleastomeric elements can be injection molded into the head.
[00083] In addition to the cleaning elements described above, the head may comprise a soft tissue cleaning product constructed from any suitable material. Some examples of suitable materials include elastomeric materials; polypropylene, polyethylene, etc .; similar, and / or combinations thereof. The soft tissue cleaner can comprise any suitable soft tissue cleaning elements. Some examples of such elements, as well as configurations of soft tissue cleaners on a toothbrush are described in US patent applications No. 2006/0010628; 2005/0166344; 2005/0210612; 2006/0195995; 2008/0189888; 2006/0052806; 2004/0255416; 2005/0000049; 2005/0038461; 2004/0134007; 2006/0026784; 20070049956; 2008/0244849; 2005/0000043; 2007/140959; and in US Patent Nos. 5,980,542; 6,402,768; and 6,102,923.
[00084] Additionally, for those modalities that comprise elastomeric elements on a first side of the head and on a second side of the head, the second side being opposite the first side, the elastomeric elements on both sides of the head can be formed unitarily. For example, the head without the elastomeric elements can comprise openings through it which can allow the elastomeric material to flow from the first side of the head to the second side of the head.
[00085] The materials for the manufacture of at least a part, such as the cable section compartment or the fastening section compartment can be of any plastic material or not suitable, being that the typical plastic materials can comprise at least one among the group consisting of polypropylene (PP), thermoplastic elastomer (TPE), polyoxymethylene (POM), a blend of polyester and polycarbonate, such as Xylex, available from SABIC, Saudi Arabia, acrylonitrile styrene acrylate (ASA), polybutylene terephthalate ( PBT). Instead of plastic, metal, glass, or wood can be chosen as the material for making at least part of the fastening section.
[00086] The dimensions and values presented in the present invention should not be understood as being strictly limited to the exact numerical values mentioned. Instead, unless otherwise specified, each of these dimensions is intended to mean both the mentioned value and a range of functionally equivalent values around that value. For example, a dimension displayed as "40 mm" is intended to mean "about 40 mm".
[00087] Each of the documents cited in the present invention, including any cross-reference, related patent or patent application, is hereby incorporated in its entirety, by way of reference, unless expressly excluded or otherwise limited. The citation of any document is not an admission that it is prior art in relation to any invention presented or claimed in this document, or that it, alone or in any combination with any other reference or reference, teaches, suggests or come up with any invention like that. In addition, if there is a conflict between any meaning or definition of a term mentioned in this document and any meaning or definition of the same term in a document incorporated by way of reference, the meaning or definition assigned to that term in this document will take precedence.
[00088] Although specific embodiments of the present invention have been illustrated and described, it should be obvious to those skilled in the art that various other changes and modifications can be made without departing from the character and scope of the invention. Therefore, it is intended to cover in the appended claims all such changes and modifications that fall within the scope of the present invention.

权利要求:
Claims (15)
[0001]
1. Mouth cleaning tool (100), in particular, a brush section, suitable for connection to a cable section of an electrical device for oral hygiene, characterized by the fact that it comprises: a compartment (150) comprising a section head with a head cavity for accommodating a movable brush head (130) or a head for mouth cleaning or a neck section with a neck cavity (159) and a cable coupling section; a first magnetic coupling element (120) which includes at least one permanent magnet or a magnetizable element which is provided in the neck section for mechanical connection of the cable drive shaft by magnetic interaction; said first magnetic coupling element being mounted on a movement transmitter (110), said movement transmitter extending within the neck cavity towards the head cavity, said movement transmitter is arranged to be movable in a longitudinal or linear direction, and said movement transmitter is coupled with said brush head or mouth cleaning head, and said brush head or mouth cleaning head is arranged to oscillate in a rotational direction.
[0002]
2. Mouth cleaning tool according to claim 1, characterized by the fact that said first magnetic coupling element, said movement transmitter and said brush head or mouth cleaning head are arranged and coupled in such a way that are operable with an operating frequency of 140 to 180 Hz and, in particular, with an operating frequency of 150 to 170 Hz.
[0003]
3. Mouth cleaning tool according to claim 1 or 2, characterized by the fact that the first magnetic coupling element is a two-component part that includes a metallic and / or ferrous composition that is mounted or molded into an element plastic.
[0004]
4. Mouth cleaning tool according to any one of claims 1 to 3, characterized in that the first magnetic coupling element has a protective cover that covers at least one side of the coupling (121) of the first magnetic coupling element which is arranged to establish a magnetic connection, for example, a bulge-shaped element or an abrasion-resistant anticorrosive coating.
[0005]
5. Mouth cleaning tool, according to claim 4, characterized by the fact that the protective cover is a bulge that is assembled by means of gluing, pressure fitting, crimping, retractable fitting, welding, or pressure or any combination thereof.
[0006]
6. Mouth cleaning tool according to claim 4 or 5, characterized by the fact that the protective cap has a thickness of less than 0.2 mm, preferably less than 0.01 mm on the coupling side of the first magnetic coupling.
[0007]
7. Mouth cleaning tool according to any one of claims 1 to 3, characterized by the fact that the first magnetic coupling element is provided with an uncovered or unworked ("blank") surface on one side of the coupling. first magnetic coupling element that is arranged to establish a magnetic connection.
[0008]
Mouth cleaning tool according to any one of claims 1 to 7, characterized in that the movement transmitter is a rod element and / or is mounted free of any return spring.
[0009]
Mouth cleaning tool according to any one of claims 1 to 8, characterized in that the first magnetic coupling element and / or the movement transmitter or rod element are provided free of contact and spaced in said cavity neck, so that the first magnetic coupling element is able to align laterally with its cable coupling partner.
[0010]
10. Mouth cleaning tool according to any one of claims 1 to 9, characterized by the fact that it also comprises a centering structure with a projecting tapered side wall, or a recessed side wall tapering for connection mechanics of the compartment with the cable section, whose connection is independent of the mechanical connection provided by the first magnetic coupling element.
[0011]
11. Electrical device for oral hygiene, characterized by the fact that it comprises a tool for oral cleaning, according to any one of claims 1 to 10 and a cable section comprising: a linear drive (260) comprising a drive shaft (210 ) for oscillation along the longitudinal axis or in a longitudinal direction of said cable section in which a second magnetic coupling element (220) is accommodated.
[0012]
Electrical device for oral hygiene according to any one of claims 1 to 11, characterized in that the second magnetic coupling element has a protective cover that covers at least one side of the coupling of the second magnetic coupling element that intended to establish the magnetic connection with the first magnetic coupling element, for example, an anti-corrosion and abrasion-resistant bulge or coating and / or in which the protective cover is produced as a bulge which is mounted by gluing, pressure fitting, crimping, retractable fitting, welding, or fitting or any combination thereof and / or in which the cover is provided with a thickness less than 0.2 mm or, preferably, less than 0.1 mm.
[0013]
13. Electrical device for oral hygiene, according to claim 11 or 12, characterized by the fact that the cable section further comprises a coupling section of the mechanical tool for oral cleaning that comprises a central and rotational alignment structure with a wall protruding tapered side wall, or a tapered recessed side wall for central and rotational alignment of the mouthwashing tool in relation to the handle and / or an axial attachment structure to hold the mouthwashing tool in the axial / longitudinal direction mounted on the handle .
[0014]
14. Electrical device for oral hygiene according to any one of claims 11 to 13, characterized by the fact that the magnetic connection comprising the first and the second magnetic coupling elements is endowed with a magnetic force that resists a force of displacement between both magnetic coupling elements, the first and the second, in a longitudinal direction of at least 4 N, optionally, of at least 5 N, more optionally, of at least 6 N, and even more optionally, of at least 7 N or between 4 N and 8N.
[0015]
15. Electrical device for oral hygiene, according to any one of claims 11 to 14, characterized by the fact that the tool compartment for oral cleaning is mechanically connected in a rotating and axial manner to the cable which is independent of the mechanical connection with an axis of cable activation by magnetic interaction.

类似技术:

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公开号 | 公开日 | 专利标题

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BR112014001477B1|2021-02-23|mouth cleaning tool and electrical device for oral hygiene

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BR112014000798B1|2020-12-22|suitable securing section for connection to a cable section of an oral care device

同族专利:

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公开号 | 公开日

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DK2550939T3|2016-06-06|

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US10327876B2|2019-06-25|

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CA2841661A1|2013-01-31|

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EP2550938B1|2015-01-14|

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KR20140029526A|2014-03-10|

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DK2550938T3|2015-04-07|

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ZA201400220B|2016-01-27|

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AU2012288447A1|2014-02-13|

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BR112014001477A2|2017-02-21|

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CA2841661C|2016-08-30|

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JP2016152936A|2016-08-25|

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US8631532B2|2014-01-21|

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HK1194650A1|2014-10-24|

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WO2013014617A1|2013-01-31|

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CN103717177A|2014-04-09|

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CN103717177B|2016-10-05|

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US9387059B2|2016-07-12|

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US20130029290A1|2013-01-31|

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US20160302900A1|2016-10-20|

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KR101560105B1|2015-10-13|

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US20140101872A1|2014-04-17|

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MX2014000986A|2014-05-13|

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EP2550938A1|2013-01-30|

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PL2550939T3|2016-09-30|

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MX342626B|2016-10-05|

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RU2013157779A|2015-08-27|

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EP2550939B1|2016-03-02|

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JP2014521431A|2014-08-28|

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ES2534822T3|2015-04-29|

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JP6290284B2|2018-03-07|

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EP2550939A1|2013-01-30|

---

ES2572927T3|2016-06-03|

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AU2012288447B2|2015-01-29|

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PL2550938T3|2015-06-30|

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法律状态:
2018-12-11| B06F| Objections, documents and/or translations needed after an examination request according art. 34 industrial property law|

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2019-10-08| B06U| Preliminary requirement: requests with searches performed by other patent offices: suspension of the patent application procedure|

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2020-09-01| B07A| Technical examination (opinion): publication of technical examination (opinion)|

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2020-12-01| B06G| Technical and formal requirements: other requirements|

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2020-12-22| B09A| Decision: intention to grant|

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2021-02-23| B16A| Patent or certificate of addition of invention granted|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 25/07/2012, OBSERVADAS AS CONDICOES LEGAIS. |

优先权:

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申请号 | 申请日 | 专利标题

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EP11006106.6|2011-07-25|

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EP11006106.6A|EP2550938B1|2011-07-25|2011-07-25|Oral hygiene device|

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PCT/IB2012/053782|WO2013014617A1|2011-07-25|2012-07-25|Oral cleaning tool for an oral hygiene device|

---