• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    ear protection to be attached to a protective helmet, particularly for forestry engineers. the invention relates to an ear protection (33) to be attached to a protective helmet (30), particularly for forestry engineers. the ear protection (33) comprises two ear protectors (34a, 34b), each of which comprises a fork support bracket (37a, 37b) comprising the ear protection capsule (35a, 35b) hingedly supported in this and a rotating plate connected to the support bracket (37, 37b) by an inclination joint in relation to which the support (37a, 37b) can be tilted bistably to an extended position and to a retracted position. the swivel plate is swiveled on a receiving part (80a, 80b) attached to the helmet (30). an engagement spring disposed between the pivot plate and the support bracket (37, 37b) pre-tension the support bracket (37, 37b) to abut the extended position and the retracted position of the support bracket against the stops. the receiving part (80a, 80b) is coupled to the inside of the helmet (30). the earmuffs (34a, 34b) are then pivoted to a resting position inside the helmet.
    公开号:BR112013000582B1
    申请号:R112013000582-3
    申请日:2011-07-12
    公开日:2020-09-29
    发明作者:Martin Greber
    申请人:Pfanner Schutzbekleidung Gmbh；
    IPC主号:
    专利说明:

    TECHNICAL FIELD OF THE INVENTION
    [001] The invention relates to an ear protection to be attached to a protective helmet, particularly for forestry engineers, comprising two ear protectors, each of which comprises: a fork-like support bracket in which a ear protection is hingedly supported, a swivel plate hingedly attached to the support bracket in relation to which the support bracket is bistably tilting to an extended position and a retracted position, and a receiving part attachable or attached to a helmet on which the Swivel plate is rotationally supported and articulated between an operating position and a rest position defined by stops. BACKGROUND OF THE INVENTION
    [002] Such ear protection is known from DE 10 2007 011 110 A1 which will be described in more detail below.
    [003] A protective helmet comprising such ear protection is known from document DE 8714490 U1. The protective helmet is comprised of a helmet shell and internal connectors. The internal connectors are comprised of a crossed strip through which the helmet is worn on the head and which ensures a shock-absorbing distance between the head and the helmet shell. The helmet has, on its outer circumference, a profusion that covers the side and rear of the helmet which is provided with four recesses to fix the cross strap and other recesses to fix additional coupling elements at the bottom edge. Additional coupling elements can be added or removed as required. In the broadest positions of the helmet, a recess is provided outside the protrusion covering the widest part of the helmet. This is the coupling position, among other items, of the ear protection. The ear protection is comprised of two ear protectors comprising respectively a wire support and an ear protection capsule. The ear protection is, together with a face protection, fixed to the outside of the helmet by means of a common connection piece that is inserted in the profusion. Disadvantageous in a helmet equipped as such is that, in use, the obstacles through which the helmet passes engage behind the supports of the ear protection capsules and, thus, harm the helmet user in service or may break the helmet and thus place the user in danger.
    [004] An ear protection known from DE 10 2007 011 110 A1 already mentioned at the beginning comprises a device for attaching an ear protection capsule to the outside of a protective helmet. Here, a protective helmet refers to a helmet model that is, by default, customized so that two earmuffs can be releasably attached to the outside of the helmet at its edge on either side of the helmet above the position of the helmet. heard in a slit or similar provided in the helmet. For this purpose, a receiving part or each ear protector is formed so that it can be fixed to the slot by means of a fitting. Ear protectors are used in an operating position while working, in which ear protection caps are in a retracted position in which they rest tightly against the ears. The earmuffs can be moved to a standby position from the operating position if the earmuffs are temporarily unnecessary. In this position, the ear protection capsules are located in an extended position in which they are still positioned above the ears, however, hinged away from them to the outside. Ear protection capsules can also be held in this position, for example, to enable conversation while working. Finally, there is a resting position for the earmuffs. In the resting position, the ear protection caps are hinged upwards from the operating position towards the rear face and outside the helmet. For the earmuffs to be moved past the rim of the helmet to the resting position, it is required that the earmuffs are first brought to the standby position. Retaining each ear protection capsule in the extended or retracted position is made possible by a double-leaf spring loaded by hinging the ear protection capsule support bracket to a rotating plate of the ear protector and having two bistable positions. SUMMARY OF THE INVENTION
    [005] A problem to be solved by the known ear protection is seen in retaining the support bracket including the ear protection capsule in the resting position since the ear protection capsule, due to gravity, struggles to rotate down and back to the standby position from the rest position. To prevent such a downward rotation, it is common for the user to swing the support bracket inwards in its resting position in which it is tilted upwards so that the bistable leaf spring presses the ear protection capsule into the housing. helmet from the outside. In this way, relatively large forces were generated in the helmet, for example, in the support of the support support in the helmet, which gives rise to the risk that the helmet and / or the support support will be damaged. The known ear protection is then formed so that each ear protection capsule is securely positioned in a resting position facing outside the helmet. To that end, the receiving portion comprises a projection that projects substantially parallel to the axis of rotation which restricts the movement of the rotary plate to a specific rotational position when leaning against the support bracket in the known ear protection. In the known ear protection, the solution of the problem is complicated by the use of a bistable leaf spring which, in fact, is supposed to be possible for the support bracket, together with the ear protection capsule, to occupy an extended posture or retracted in the operating or standby position, but, at the same time, that serves to articulate the support support to the rotating plate and may therefore not have an exactly defined inclination point and cannot guarantee a defined pressure exerted in the ear by the ear protection capsule in case of different sizes of head of helmet users. As the hinged connection between the support bracket and the turntable is only established by the bistable leaf spring and depends on its two bistable end positions, the support bracket has neither an exactly defined extended position nor an exactly defined retracted position that prevents an adjustment of the ear protection to different head sizes.
    [006] The fixation of the ear protector in the resting position is made with the aid of a stop supported by the leaf spring, leaning against a projection of the receiving part. However, this support is dependent on the friction of the leaf spring in the projection and can then change over time. The force towards the operating position required on the turntable to move the mentioned stop out of engagement can then decrease over time so that the user can, however, try to prevent an unwanted downward rotation of the support bracket with the aid of the ear protection capsule by articulating the ear protectors inwards on the outside of the helmet in the resting position so that the ear protection capsule is pressed against the helmet shell from the outside. SUMMARY OF THE INVENTION
    [007] It is an objective of the invention to design an ear protection of the type mentioned at the beginning so that the problems mentioned above are eliminated, that is, in particular, that the risk that a helmet can be attached to obstacles in use is eliminated. due to the ear protection attached to it and that an ear protector can unintentionally rotate backwards to the protection position from the rest position.
    [008] According to the invention, this objective is solved by the support bracket and the rotating plate connected to each other by an inclination joint, whose inclination axis penetrates the support bracket and the rotating plate, by a coupling spring arranged adjacent to the tilt junction between the swivel plate and a free end of the support bracket pre-tensioning it to lean against additional stops defining the extended position and the retracted position to thereby make its bistable inclination and through the part of receipt is designed for coupling inside a helmet.
    [009] According to the invention, the receiving part is mounted inside a helmet so that the ear protection capsules and associated support brackets are located substantially within the perimeter of the protective helmet. The helmet then does not offer any possibility that obstacles, such as branches and the like, are pressed on its exterior. If ear protection is not required, ear protectors can be rotated back to the resting position that is located inside the helmet within the perimeter of the protective helmet.
    [010] Due to the coupling of the receiving part of each ear protector inside the helmet, particularly inside the helmet shell, in addition to the support brackets and ear protection caps, the receiving parts are also protected against an external force exerted by obstacles that the helmet can come into contact with. In addition, the support brackets are articulated between the waiting position and the resting position within a gap between the helmet shell and the internal connectors due to the receiving parts being mounted inside the helmet, that is, they are always located within the perimeter of the helmet shell. Consequently, the support bracket and ear protection caps do not offer any hitch points for obstacles in any position.
    [011] Due to the fact that in each ear protector of the ear protection according to the invention, the support bracket and the swivel plate are connected to each other by a tilt joint whose tilt axis penetrates the support bracket and the rotating plate, the disadvantages resulting from a bistable leaf spring being used to pivot the support support to the rotating plate are eliminated. In the ear protection according to the invention, the tilt axis constitutes a defined center of rotation that does not change over time. In addition, according to the invention, the coupling spring located adjacent to the tilt junction between the swivel plate and a free end of the support bracket and pre-tensioning the support bracket only ensures the accumulation of a force between the support bracket and the rotating plate, that is, it does not simultaneously define the extended position and the retracted position of the support bracket. These positions are preferably determined by defined stops. The coupling spring together with the other stops then establishes the defined end positions for the support bracket when it is extended and retracted and thus ensures its bistable inclination between the defined stops.
    [012] In the ear protection according to the invention, the coupling spring does not have the function of a joint supporting the support bracket, but only serves to accumulate a force with the aid of which the support bracket can be retained in a defined extended position and a defined retracted position on the additional stops. The problem of unwanted downward rotation of the ear muff from the downward position towards the waiting position is greatly reduced, if not eliminated, by the ear muff according to the invention because the ear muff it will be positioned inside the helmet and outside the helmet's internal connectors in the resting position and will then have a substantially reduced tendency to rotate downward from the resting position as a result of pressure from both sides.
    [013] The advantageous modalities of ear protection according to the invention are the subject of the sub-claims.
    [014] In an ear protection mode according to the invention, an eccentric screw for adjusting the initial load applied to the support bracket by the coupling spring is swiveled on the swivel plate and in contact with the coupling spring. It is then possible to adjust the magnitude of the force with which the ear protection capsule is pressed against the ear in the retracted position of the support bracket in a simple way.
    [015] In an additional modality of the ear protection according to the invention, a slide pre-tensioned towards the rotating plate by a pressure spring is displacedly supported on the free end of the support bracket, said slide comprising a retaining nut that can be placed in contact with a sliding path in the receiving part and being prevented from being displaced in the retracted position and not being prevented from being displaced in its extended position by the support support and releasing the support support releasably in its resting position by engaging a recess in the sliding path of the receiving portion. The pre-tensioned spring slide is, in this embodiment of the invention, retained in engagement with the rotating disc in a position in which the free end of the support bracket engages in a recess of the slide. The slide recess thus forms one of the additional stops defining the retracted position of the support bracket. On the other hand, the free end of the support bracket leans against the rotating disk in a recess that consequently constitutes one of the other stops and defines the extended position of the support bracket. In this latter position, the slide is movable on the support bracket along the slide path in the receiving part in the direction opposite to the rotating plate against the pressure of the pressure spring so that the support bracket including the rotating plate can be hinged in the receiving part and support bracket including the ear protection capsule can be located in the resting position.
    [016] In an additional embodiment of the ear protection according to the invention, a groove extending at least over a semicircle to accommodate a circular arc-shaped support of the rotating plate is formed at the receiving part. The turntable is guided on the receiving part during its rotation.
    [017] In an additional modality of ear protection according to the invention, a resilient tongue protruding from the receiving part engages in a complementary depression in the rotating plate to lock the mutual engagement of the receiving part and the rotating plate, and a push button to release the fixation is arranged on the turntable. The support bracket can, in this way, be locked in place by a slot together with its rotating plate at the receiving part and released by operating the push button. BRIEF DESCRIPTION OF THE DRAWINGS
    [018] The modalities of the invention will be described in more detail below with respect to the drawings in which:
    [019] FIG. 1 shows a protective helmet comprising an ear protection according to the invention, a helmet cover is shown in a section view and two ear protectors constituting the ear protection shown in a standby position, that is, articulated to away from the ears.
    [020] FIG. 2 shows the protective helmet according to FIG. 1, the earmuffs, however, are shown in an operating position, that is, retracted in the ears.
    [021] FIG. 3 shows a side view of the protective helmet according to FIG. 2.
    [022] FIG. 4 shows the protective helmet according to FIG. 3, the ear protection according to the invention, however, is articulated to a resting position and accommodated within the helmet.
    [023] FIG. 5 shows the protective helmet according to FIG. 4 in a bottom view, only one ear protection of the ear protection according to the invention on one side is shown.
    [024] FIG. 6 shows a front view of one of the two ear protectors in the ear protection according to the invention.
    [025] FIG. 7 shows a front view of the ear protector according to FIG. 6.
    [026] FIG. 8 shows the ear protector according to FIGs. 6 and 7 in a side view and in the standby position.
    [027] FIG. 9 shows a rear view of the ear protector according to FIG. 6.
    [028] FIG. 10 shows a longitudinal sectional view of the upper part of the ear protector according to FIG. 8.
    [029] FIG. 11A shows the upper part of the ear protector according to FIG. 7 together with a receiving part and articulated to the resting position.
    [030] FIG. 11B shows a side view of the ear protector according to FIG. 11 A.
    [031] FIG. 12A shows the ear protector according to FIG. 11A hinged back to the standby position.
    [032] FIG. 12B shows a side view of the ear protector according to FIG. 12A.
    [033] FIG. 13A shows the ear protector according to FIG. 12A, however, in the operating position.
    [034] FIG. 13B shows the ear protector according to FIG. 13A in a side view.
    [035] FIG. 14 shows, as a detail, the helmet shell of the protective helmet according to FIG. 5 in a perspective representation and an angled view from below, the internal connectors are not shown and a receiving part of only an ear protector that is attached to the interior of the helmet shell is shown for clarity. DETAILED DESCRIPTION
    [036] A protective helmet designated by 30 in its entirety and comprising an ear protection 33 according to the invention that is designed, particularly for use in the forest, is shown in different views in FIGs. 1 to 5 and 14. Ear protection 33 comprises two ear protectors 34a, 34b. Protective helmet 30 comprises a helmet shell 36 and the subset of internal connectors designated 40 as a whole and comprising a support cage 42, a headband 44, and a neckband 46. The neckband is provided with a clamping unit designated as 48 as a whole.
    [037] Three support arms formed as spacers of which only support arms 54 and 55 can be seen in FIGs. 1 and 2, serve as devices for a three-point coupling of the internal connectors or the subset of internal connectors 40 to the helmet shell 36. The helmet shell 36 is dimensioned like this (that is, its internal width is dimensioned as long and as wide) and the support arms are dimensioned and arranged so that a gap 60 to accommodate the ear protection capsules 35a, 35b of the ear protectors 34a or 34b and other helmet accessories, as well as support devices for the protection of ear 33 is present between the subset of internal connectors 40 and the helmet shell 36. The other helmet accessories include the clamping unit 48 mentioned above neck band 46. Regarding ear protection 33, clearance 60 is determined so that the ear protection caps 35a, 35b abut the inside of the helmet shell 36 and the outside of the inner connector subset 40 in the resting position as shown in FIG. 5.
    [038] An ear protection support device 33 comprises two receiving parts 80a, 80b coupled to the inside of the helmet housing 36. The receiving parts 80a, 80b are pivot bearings to support the supports 37a, 37b together with the ear protection capsules 35a or 35b as described in more detail below. The receiving parts 80a, 80b are respectively formed integrally inside the helmet shell 36 as a cup of the pivot bearings or, preferably, fixedly mounted as additional parts.
    [039] Ear protection 3 will now be described in more detail with respect to the drawings, particularly FIGs. 1 to 5 and 14. FIG. 14 shows helmet shell 36 without the inner connector subset 40 in an angled view from below, particularly the position of the receiving portion 80a within the illustrated helmet shell 36. The other receiving part 80b that cannot be seen is inversely coupled to the opposite side. FIG. 1 shows the protective helmet 30 with the ear protection 33 provided on both sides, the helmet shell 36 is shown in a sectional view, and the ear protectors 34a, 34b are shown in the extended, that is, hinged state. away from the ears in the waiting position. FIG. 2 shows the protective helmet according to FIG. 1, the earmuffs 34a, 34b, however, are shown in the retracted state in the ears in the operating position. FIG. 3 shows a side view of the protective helmet according to FIG. 2. FIG. 4 shows the protective helmet according to FIG. 3, the earmuffs 34a, 34b, however, are shown when folded back to a resting position and accommodated in the helmet 30.
    [040] The two earmuffs 34a, 34b comprise the two earmuffs 35a, 35b which are pivotally supported on the fork support bracket 37a or 37b, respectively. The interior of the helmet shell 36 is provided with the fixedly coupled receiving parts 80a, 80b. In the receiving parts 80a, 80b, the support brackets 37a, 37b are rotationally supported with swivel plates 39a or 39b hinged to their free ends as can be seen in FIGs. 6 to 13. The receiving parts 80a, 80b and the support supports 37a, 37b are arranged and formed so that the support supports 37a, 37b are articulated between two positions within the clearance 60, that is, the operating position shown in FIGs. 2 and 3 in which the earmuffs 35a, 35b are hinged away from the ears and the resting position shown in FIG. 4 in which the ear protection capsules 35a, 35b are accommodated in the gap 60 in the helmet 30.
    [041] Each support bracket 37a, 37b is designed so that the pre-tensioned and curved spring in an area between its two ends in which it extends into the gap 60 such that the ear protection caps 35a, 35b are hinged away from the ear in the non-curved position of each support bracket 37a, 37b, respectively, as shown in FIG. 1, and hinged over the ear in the curved position of the support bracket 37a, 37b, respectively, as shown in FIG. 2. If the protective helmet 30 is not placed on the head, the two protective capsules 35a, 35b respectively reach a position that is located substantially further inward than the ear on which each protective ear capsule 35a, 35b is leaning . In other words, the distance between the ear protection capsules is, in this case, substantially less than the distance between the ears. In this way, it is ensured that the ear protection capsules 35a, 35b are kept pressed to the ears by the spring preload when the helmet 30 is placed. The spring preload to bend each support bracket 37a, 37b between two defined (bistable) positions is exerted by a circularly curved engagement spring 92a, 92b (as can be seen, for example, in FIG. 7). Each support bracket 37a, 37b can be manually moved to the stowed position and to the extended position. In each of these positions, the snap spring 92a or 92b performs a final position lock in cooperation with a stop described below respectively. The end position lock of the support bracket 37a, 37b should not be reached if the helmet is in place and each ear protection capsule 35a, 35b is held resiliently pressed to the ear.
    [042] In addition, each receiving part 80a, 80b and each support bracket 37a, 37b including the swivel plate 39a, 39b are formed so that the support bracket can only be pivoted backwards from the position shown in FIG . 1. In this way, it is ensured that the ear protection capsules 35a, 35b can be accommodated within the gap 60 behind the ear without colliding with the ears and the bottom edge of the helmet edge 36. FIG. 6 shows a rear view of the earmuffs 34a, b of the earmuff 33. The earmuffs 34a and 34b are identically formed, that is, they can be fitted on the right side and on the left side of helmet 30. The only thing different is the receiving part model 80a, b since it has an increasingly descending sliding path 86a, b in a backward direction. The receiving part 80a is shown in FIG. 14. The receiving part 80a is also shown in FIGs. 11 to 13.
    [043] According to the representation in FIG. 7, the ear protection capsule 35a, b is hingedly supported on the fork support bracket 37a, b. A swivel plate 39a, b is pivotally connected to the support bracket 37a, b by means of an incline junction 82a, b which can be seen in FIG. 8. The tilt joint 82a, b is formed as a tilt axis 84a, b formed as a rod-like axis inserted into holes in the support bracket 37a, b and the swivel plate 39a, b, thus penetrates the support bracket and the rotating plate. Due to the existing tilt junction 82a, b, the support bracket 37a, b can be tilted to the extended position (standby position) and to the retracted position (operating position), if the ear protector 34a, b is located in its position in the ear. In the operating position shown in FIG. 13, the ear protection capsule 35a, b leans against the ear. Alternatively, the earmuff 34a, b can occupy the waiting position in which it is extended, that is, in which the earmuff is not pressed against the ear. This waiting position is shown in FIG. 12. In the operating position according to FIG. 13, the ear protector 34a, b is only articulated in a reduced angle range. In the standby position according to FIG. 12, the ear protector 34a, b is pivotable to the resting position shown in FIG. 11. The receiving part 80a, b which is generally fixedly coupled to the interior of helmet 30, to be more precise, inside helmet shell 36, is shown in FIGs. 10 to 13 for explanatory reasons. The swivel plate 39a, b swiveled on the receiving part 80a, b and pivotable between the holding position according to FIG. 12 and the resting position according to FIG. 11. The operating position and the resting position are defined by stops which will be described in more detail below.
    [044] In the standby position of ear protector 34a, b shown in FIG. 12, the free end 38a, b of the support bracket 37a, b that is hinged away from the ear is held in a stop 41 a, b by the pre-tensioning force of the snap spring 92a, b formed by a cover plate 51 a, b rigidly connected to the swivel plate 39a, b. The initial load of the snap spring 92a, b keeps the support bracket 37a, b leaning stably against the stop 41 a, b. Opposite the stop 41 a, b, the receiving part 80a, b has a recess 89a, b in which the free end 38a, b of the support bracket 37a, b is pivotable from the holding position shown in FIG. 12B to the operating position shown in FIG. 13B. A wall of the receiving part 80a, b facing the stop 41 a, b forms another stop 43a, b in which the free end 38a, b of the support bracket 37a, b is maintained by the initial load of the coupling spring 92a, b in the operating position shown in FIG. 13B. The support bracket 37a, b hinged to the swivel plate 39a, b blocks the rotation of the support bracket 37a, b in the rest position shown in FIG. 11 with its free end 38a, b in the operating position.
    [045] The articulation and non-articulation of the swivel plate 39a, b are determined by a slide 98a, b shown in a sectional view in FIGs. 10 to 13. The slide 98a, b is displacably supported on an extension of the swivel plate 39a, b above the free end 38a, b of the support bracket 37a, b and is pre-tensioned by a pressure spring 98a, b towards to the swivel plate 39a, b. The receiving part 80a, b is provided with a slide path 86a, b at its lower edge. In FIGs. 10 to 13, only the receiving part 80a mounted on the left inner face of the helmet is shown. Consequently, the slip path is only designated 86a in these figures. The slide 98a, b comprises a retaining nut 104a, b which can be brought into contact with the sliding path 86a, b in the receiving part 80a, b and is prevented from being displaced by the support bracket 37a, b in its retracted position according to FIG. 13B, but is not prevented from being moved in its extended position according to FIGS. 11 and 12. The slide 98a, b is not prevented from being moved by the support bracket 37a, b located in the extended position and reliably retains the support bracket 37a, b in its resting position by engaging in a recess 87a, b in the slip path 86a, b of the receiving part 80a, b. Slide 98a, b is displaced by the rotational movement of the standby position according to FIG. 12 to the resting position according to FIG. 11. The displaced slide 98a, b no longer allows the support bracket 37a, b to be pivoted in the direction of the operating position, that is, in the direction of the retracted position of the support bracket 37a, b. In the standby position according to FIG. 12, slide 98a, b is free, and support bracket 37a, b is then pivotable to the resting position according to FIG. 11. In the operating position according to FIG. 13, the slide 98a, b is not movable so that the support bracket 37a, b including the ear protection cap 35a, b is not pivotable to the resting position. This articulation is only given again if the support bracket 37a, b is articulated back to the holding position according to FIG. 12 in which the free end 38a, b of the support bracket 37a, b does not touch the stop 88a, b from the operating position according to FIG. 13.
    [046] In the receiving part 80a, b, a groove 85a, b that is formed extends over at least one semicircle and serves to accommodate a circular arch support 49a, b of the swivel plate 39a, b as can be seen in FIG. 10. In FIG. 10, it can also be seen that the receiving part 80a, b comprises a resilient tongue 81 a, b projecting towards the rotating plate 39a, b. The resilient tongue 81 a, b engages a complementary depression 83a, b on the swivel plate 39a, b to lock the mutual engagement of the receiving part 80a, b and the swivel plate 39a, b. On the swivel plate 39a, b, a push button 50a, b is provided to release the retention. When operating the push button 50a, b in FIG. 9, the resilient tongue 81 a, b in FIG. 10 is pushed to the right where the slot between the receiving part 80a, b and the turntable 39a, b is released again.
    [047] Each ear protection capsule 35a, b is concave curved in the longitudinal direction on its face towards the ear, so that it can more readily adjust to the shape of the ear and head. This results in an improved pressure distribution in the ear and allows for better closure against the entry of noise in combination with reduced pressure application. NUMERICAL REFERENCE LIST 30 - protective helmet 33 - ear protection 34a, b - ear protector 35a, b - ear protection capsule 36 - helmet shell 37a, b - support bracket 38a, b - free end 39a, b - swivel plate 40 - subset of internal connectors 41 a, b - stop (holding position, support bracket) 42 - support cage 43a, b - additional stop (operating position, support bracket) 44 - headband 46 - neck band 48 - clamping unit 49a, b - circular arch support 50a, b - push button 51a, b - cover plate 54 - support arm 55 - support arm 60 - clearance 80a, b - receiving part 81a, b - resilient tongue 82a, b - tilt joint 83a, b - complementary depression 84a, b - tilt axis 85a, b - groove 86a, b - slip path 87a, b - recess 88a, b - retaining nut 89a, b - recess 92a, b - coupling spring 94a, b - eccentric screw 96a, b - pressure spring 98a, b - slide
    权利要求:
    Claims (5)
    [0001]
    1. Ear protection to be attached to a protective helmet (30) comprising two ear protectors (34a, 34b), each of which comprises: - a fork support bracket (37a, 37b) in which a cap ear protection (35a, 35b) is hingedly supported, - a swivel plate (39a, 39b) hingedly connected to the support bracket (37a, 37b) against which the support bracket (37a, 37b) can be tilted bistably to an extended position and to a retracted position, and - a receiving part (80a, 80b) attachable or attached to a helmet (30) in which the rotating plate (39a, 39b) is supported in a rotational and articulated way between a position of protection and a rest position defined by stops, characterized by the fact that the support bracket (37a, 37b) and the swivel plate (39a, 39b) are connected to each other by an inclination junction (82a, 82b) whose axis of slope (84a, 84b) penetrates the support bracket (37a, 37b) and the swivel plate (39a , 39b), where an engagement spring disposed adjacent to the tilt junction (82a, 82b) between the swivel plate (39a, 39b) and a free end (38a, 38b) of the pre-support bracket (37a, 37b) tensions the support bracket to lean against additional stops defining the extended position and the retracted position and ensures its bistable inclination in this way, where the receiving part (80a, 80b) is designed to be attached to the inside of a helmet (30).
    [0002]
    2. Ear protection, according to claim 1, characterized by the fact that it comprises an eccentric screw (94a, 94b) rotationally arranged on the rotating plate (39a, 39b) and in contact with the coupling spring (92a, 92b) to adjust the initial load applied to the support bracket (37a, 37b) by the coupling spring (92a, 92b).
    [0003]
    3. Ear protection according to claim 1 or 2, characterized by the fact that, at the free end (38a, 38b) of the support bracket (37a, 37b), a slide (98a, 98b) pre-tensioned in towards the rotating plate (39a, 39b) by a pressure spring (96a, 96b) is supported in a displaceable way in an extension of the rotating plate (39a, 39b) which comprises a retaining nut (104a, b) that can be placed in contact with a sliding path (102a, 102b) in the receiving part (80a, 80b) and is prevented from being moved by the support bracket (37a, 37b) in its extended position and reliably retains the support bracket ( 37a, 37b) in their resting position by engaging a recess (87a, 87b) in the sliding path (86a, 86b) of the receiving part (80a, 80b).
    [0004]
    4. Ear protection according to any one of the preceding claims, characterized by the fact that it comprises a groove (80a, 80b) that is formed in the receiving part (80a, 80b) and extends over at least one semicircle to receive a circular arch support (49a, 49b) of the rotating plate (39a, 39b).
    [0005]
    5. Ear protection according to claim 4, characterized by the fact that it comprises a resilient tongue (81a, 81b) protruding from the receiving part (80a, 80b) to engage a complementary depression (83a, 83b ) on the swivel plate (39a, 39b) to lock the mutual engagement of the receiving part (80a, 80b) and the swivel plate (39a, 39b) and to release the retention by means of a push button (50a, 50b) arranged on the turntable (39a, 39b).
    类似技术:
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    CN106572716B|2019-12-17|headband for protective helmet
    JP4927699B2|2012-05-09|Rotating and rotating shaft belt clip that can be used as a stand
    ES2428085T3|2013-11-06|Protective helmet, particularly for forest engineering workers
    BR112016025592B1|2022-01-11|FIXING SET FOR HEARING PROTECTOR AND HEARING PROTECTIVE DEVICE
    CA2798921C|2019-01-15|Headgear support device having front-back adjustment
    JP6275043B2|2018-02-07|Underwater mask
    FR2987982A1|2013-09-20|EYE SCREEN FOR PROTECTIVE HELMET
    ES2635001T3|2017-10-02|Device for opening / closing a chin and helmet protector comprising the same
    BR112013000588B1|2021-09-21|PROTECTION HELMET, IN PARTICULAR FOR FOREST ENGINEERS
    JP2020002480A|2020-01-09|Helmet
    同族专利:
    公开号 | 公开日
    ZA201300325B|2014-03-26|
    UA107842C2|2015-02-25|
    EP2506731B1|2013-12-04|
    EA201300114A1|2013-07-30|
    EA025775B1|2017-01-30|
    US20130219598A1|2013-08-29|
    EP2506731B8|2015-11-04|
    HRP20140165T1|2014-03-28|
    DE102010026997A1|2012-01-19|
    JP2013531148A|2013-08-01|
    DK2506731T3|2014-03-03|
    PE20150298A1|2015-03-04|
    AU2011278351A1|2013-02-14|
    KR20130135231A|2013-12-10|
    ES2450146T3|2014-03-24|
    PL2506731T3|2014-05-30|
    KR101906611B1|2018-10-10|
    AU2011278351B2|2016-06-09|
    MX2013000462A|2013-12-02|
    BR112013000582A2|2016-07-05|
    CA2804479C|2018-03-20|
    SI2506731T1|2014-04-30|
    WO2012007475A1|2012-01-19|
    NZ606390A|2015-02-27|
    CN103037725A|2013-04-10|
    EP2506731A1|2012-10-10|
    PE20131199A1|2013-11-20|
    JP6046614B2|2016-12-21|
    CA2804479A1|2012-01-19|
    CN103037725B|2015-11-25|
    CL2013000121A1|2013-07-19|
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    US3430261A|1967-03-01|1969-03-04|Air Reduction|Sound attenuator attachment for a protective helmet|
    US3461463A|1967-06-09|1969-08-19|American Optical Corp|Ear protector suspension devices and the combination with headgear|
    US3864756A|1972-12-18|1975-02-11|Us Navy|Adjustable earmuffs|
    US4069512A|1975-05-12|1978-01-24|Tore Georg Palmaer|Locating device for ear-muffs on helmets|
    NO136693C|1976-03-10|1977-10-26|Erik Boettger|DEVICE WITH HELMET WITH WELL BELLS|
    JPH02405Y2|1984-09-14|1990-01-08|
    SE8703414L|1987-09-02|1989-03-03|Kompositprodukter Sk Fm Ab|HOERSELSKYDD|
    DE8714490U1|1987-10-30|1988-09-22|Allit-Plastic-Werk Kimnach Gmbh & Co, 6550 Bad Kreuznach, De|
    FI982681A0|1998-12-11|1998-12-11|Arimo Ristola|Mounting arrangement for attaching guards to the helmet|
    JP2004032340A|2002-06-26|2004-01-29|Temuko Japan:Kk|Bone conduction speaker unit for head mounting means|
    DE602004021528D1|2003-05-02|2009-07-30|Jose Maria Rolla|Hearing protection for helmet and helmet with such hearing protection|
    SE0600541L|2006-03-10|2007-02-13|Kompositprodukter Ab|Device for holding a hearing cap to a helmet and a helmet comprising such a device|
    US20070261153A1|2006-05-09|2007-11-15|Wise Robert W|Protective helmet with flush pivoting ear cups|
    DE102006040555A1|2006-08-30|2008-03-06|Andreas Stihl Ag & Co. Kg|Protective headgear combination|
    US20080184465A1|2007-02-05|2008-08-07|Shi Ming Chang|Protective cap and earmuff assembly|
    JP2009024312A|2007-07-20|2009-02-05|Akira Mitake|Mechanism of shield and earmuff|DE102012000370B4|2012-01-11|2017-02-02|Pfanner Schutzbekleidung Gmbh|Hard hat, especially for mountaineers and tree climbers|
    US9693595B2|2012-01-27|2017-07-04|Revision Military S.A.R.L.|Helmet earpiece|
    US9339075B2|2013-08-09|2016-05-17|Larry D. Ratliff|Cap hearing protection system|
    DK3094199T3|2014-01-14|2019-09-30|Gentex Corp|Helmet-mounted swivel head unit|
    US10959477B2|2014-05-02|2021-03-30|3M Innovative Properties Company|Ear muff attachment having dual axis of rotation|
    USD741550S1|2014-05-02|2015-10-20|3M Innovative Properties Company|Ear muff attachment arm|
    US9596902B2|2014-05-30|2017-03-21|3M Innovative Properties Company|Earmuff accommodating welding shield|
    CN107427660B|2015-03-03|2020-04-24|山谷儿童医疗|Skull tightening device|
    WO2016179369A1|2015-05-07|2016-11-10|Impact Labs Llc|Device for minimizing impact of collisions for a helmet|
    DE102016100086A1|2016-01-04|2017-07-06|Pfanner Schutzbekleidung Gmbh|Earmuffs, communication system and safety helmet|
    EP3340643A1|2016-12-21|2018-06-27|Safariland, LLC|Rail connector for earcup suspension assembly|
    US10582736B2|2017-01-16|2020-03-10|Safariland, Llc|Wireform attachment mechanism|
    EP3481243B1|2017-02-21|2020-11-11|Unit 1 Gear, Inc.|Headphone and helmet assembly|
    USD876017S1|2017-05-10|2020-02-18|3M Innovative Properties Company|Attachment arm|
    USD866084S1|2018-05-18|2019-11-05|Gentex Corporation|Headset mount arm|
    US10912344B2|2018-12-03|2021-02-09|Msa Technology, Llc|Helmet with accessory attachment rail|
    RU190133U1|2018-12-21|2019-06-21|Общество с ограниченной ответственностью "СТ-Логистик"|EARPHONE|
    法律状态:
    2016-09-20| B25C| Requirement related to requested transfer of rights|Owner name: ANTON PFANNER (AT) Free format text: A FIM DE ATENDER A TRANSFERENCIA, REQUERIDA ATRAVES DA PETICAO NO 20130075245 DE 10/09/2013, E NECESSARIO APRESENTAR PROCURACAO EM NOME DA CESSIONARIA. |
    2017-05-02| B25A| Requested transfer of rights approved|Owner name: PFANNER SCHUTZBEKLEIDUNG GMBH (AT) |
    2018-12-26| B06F| Objections, documents and/or translations needed after an examination request according art. 34 industrial property law|
    2019-08-13| B06U| Preliminary requirement: requests with searches performed by other patent offices: suspension of the patent application procedure|
    2020-07-14| B09A| Decision: intention to grant|
    2020-09-29| B16A| Patent or certificate of addition of invention granted|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 12/07/2011, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    DE102010026997.2|2010-07-13|
    DE102010026997A|DE102010026997A1|2010-07-13|2010-07-13|Hearing protection for attachment to a protective helmet, in particular for forestry workers|
    PCT/EP2011/061882|WO2012007475A1|2010-07-13|2011-07-12|Ear defenders for fastening to a protective helmet, in particular for forestry workers|
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