• 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:
    The invention relates to an electric geared motor 1, 2, 3 mounted at the end of the actuator of a disk brake. It includes a cantilever motor, parallel to the gearbox output and on the same side. According to the invention, the geared motor comprises damper 13, 23, 33 rigidly anchored to its housing and extending laterally. The damper comprises a damping material operating by friction 2320 or shear 1320, 3320. According to the embodiments, the damper absorbs vibrations of the geared motor and / or the caliper by pressing on the caliper housing 7 and / or by displacement of a moving mass 231 producing an inertial damper.
    公开号:FR3053422A1
    申请号:FR1656232
    申请日:2016-06-30
    公开日:2018-01-05
    发明作者:Jerome Bertrand；Thierry Pasquet；Aleksander Hurwic；Nicola Tristano
    申请人:Foundation Brakes France SAS；
    IPC主号:
    专利说明:

    © Publication no .: 3,053,422 (to be used only for reproduction orders)
    ©) National registration number: 16 56232 ® FRENCH REPUBLIC
    NATIONAL INSTITUTE OF INDUSTRIAL PROPERTY
    COURBEVOIE © Int Cl 8 : F16 D 65/14 (2017.01), F 16 D 55/227, 121/24
    A1 PATENT APPLICATION
    ©) Date of filing: 30.06.16. © Applicant (s): FOUNDATION BRAKES FRANCE (30) Priority: Simplified joint stock company - FR. @ Inventor (s): BERTRAND JEROME, PASQUET THIERRY, HURWIC ALEKSANDER and TRISTANO (43) Date of public availability of the NICOLA. request: 05.01.18 Bulletin 18/01. ©) List of documents cited in the report preliminary research: Refer to end of present booklet (© References to other national documents ® Holder (s): FOUNDATION BRAKES FRANCE related: Joint stock company. ©) Extension request (s): © Agent (s): PONTET ALLANO & ASSOCIES.
    MOTOR REDUCER UNIT FOR ELECTRIC DISC BRAKE ACTUATOR, BRAKE AND INDUSTRIALIZATION AND ASSEMBLY METHOD.
    FR 3 053 422 - A1 t £ /) The invention relates to an electric geared motor 1,2, 3 mounted at the end of the actuator of a disc brake. It comprises a motor mounted in overhang, parallel to the outlet of the reduction gear and on the same side.
    According to the invention, the geared motor comprises damper 13, 23, 33 rigidly anchored on its housing and which extends laterally. The damper comprises a damping material operating by friction 2320 or by shearing 1320, 3320. According to the embodiments, the damper absorbs vibrations of the gearmotor and / or the caliper by pressing on the caliper housing 7 and / or by displacement of a mobile mass 231 producing an inertial damper.
    Garlic

    -1 "Geared motor group for electric disc brake actuator, brake and industrialization and assembly process"
    The invention relates to an electric gear motor mounted at the end of the actuator of a disc brake. It includes a cantilevered motor, parallel to the outlet of the reducer and on the same side.
    According to the invention, the geared motor comprises damper rigidly anchored on its housing and which extends laterally. The damper comprises a damping material operating by friction and / or by shearing. According to the embodiments, the damper absorbs vibrations of the gearmotor and / or of the stirrup by pressing on the stirrup housing and / or by displacement of a mobile mass producing an inertial damper.
    State of the art
    In the field of brakes for the automobile in general, and more particularly disc brakes, it has become common to install an electric actuator directly on the brake. This actuator is generally used for the parking and emergency brake function, or parking brake, but sometimes also as a service brake.
    Conventionally, the brake caliper comprises a screw-lock mechanism in the caliper, inside the brake piston and often in addition to its hydraulic operation, which moves this piston in translation to tighten the pad (s) against the disc. .
    In a current configuration, as illustrated in FIGURE 1 and FIGURE 2 for a brake 1 with caliper 11 sliding on yoke 12, this screw-nut mechanism is coaxial with the brake piston and receives a rotation drive by a geared motor group 19 (or MGU for Motor Gear Unit) whose axis output A192 is mounted coaxially on the end of the shaft of the screw-nut. The gearmotor group 19 is fixed to the stirrup 11 on a fixing plane P10, here by screws 101. Inside the gearmotor 19, the output set driven by a reduction gear (for example with external pinions and / or trains epicyclic) by an electric motor 191. This motor 191 is arranged in the geared motor unit housing, with its axis A191 next to the output axis and parallel to it. In this configuration, the motor protrudes from the fixing plane P70 and extends in the direction of the stirrup, this is to
    -2 tell from outside the vehicle. This form of the geared motor 9 allows a small footprint, using the space available around the barrel 71 of the caliper, that is to say the part of the caliper 7 which contains the brake piston and in general the screw mechanism. nut.
    However, such an electric geared motor has drawbacks, particularly in terms of vibrations. These vibrations come inter alia from the operation of the electric motor. They also come from tremors due to the road, which are all the more important as the brake and the gearmotor are part of the unsprung masses of the vehicle.
    The vibrations are a source of discomfort for the occupants of the vehicle, directly or by the noises which they cause. They can also be a source of reliability problems, for example fatigue, loosening or wear. In addition, the vibrations cause or facilitate spontaneous movements of the brake pads, which can thus come into contact with the disc and cause unwanted braking. In particular, the vibrations can facilitate and accentuate such an advance from the pads to the disc, by combining with a suction resulting from the boundary layer of the air driven in rotation by disc when it rotates.
    In addition to possible additional noise, such unwanted braking has undesirable consequences and in particular fuel consumption, the additional pollution which results therefrom, as well as wear of the disc and the pad linings.
    An object of the invention is to overcome all or part of the drawbacks of the state of the art. In particular, it is sought to reduce or absorb the vibrations present in the brake and in particular the gear motor. These objectives are sought while minimizing them, optimizing the compromises between costs, reliability, ease of manufacture and assembly, and the flexibility of adaptation to a vehicle model or to different specifications.
    Presentation of the invention
    The invention provides an electric geared motor device for a disc brake caliper, intended to be coupled to a disc brake caliper to drive, within said caliper, a translation mechanism of at least one brake shoe. This gearmotor is of the type comprising a self-supporting box containing an electric motor and a reduction mechanism mechanically connected to provide at the output of said reducer a drive in rotation along an output axis. This housing is designed to be fixed on the end of a caliper barrel, that is to say the part of the caliper body which surrounds the brake piston, by a fixing interface which surrounds said outlet axis. The electric motor is arranged with its axis of rotation next to and parallel to the output axis. Advantageously, (which includes an optional character) this motor is disposed in a part of the gearmotor housing which extends along said caliper barrel. Typically, this part of the housing surrounding the motor protrudes beyond the fixing interface, parallel to and in the same direction as the output axis of said geared motor.
    Such a gearmotor architecture is very conventional because it is fairly compact and remains close to the plane of the wheel, which limits interference with the rest of the vehicle and with obstacles from the road.
    Advantageously, the motor is of a brushless type (brushless in Anglo-Saxon terminology) controlled by vector control by a computer. Its reducer can include different types of mechanisms, sometimes a gear train with external contacts but most often at least one planetary gear to provide a large reduction in a small volume, allowing to optimize the power and therefore the size of the motor.
    The part of the gearmotor forming the outlet often has a substantially cylindrical shape which encloses the planetary gear, in the extension or even the continuity of the caliper barrel, the thickness of which is itself conditioned by the diameter of the brake piston and of the screwed mechanism that 'it contains. The general shape of the gearmotor is therefore often that of two parallel cylinders joined together by their ends on the side opposite the stirrup.
    -4According to the invention, this geared motor is characterized in that it comprises at least one damping device rigidly anchored on the housing of the geared motor, and which extends laterally with respect to said axes. This shock absorber is integral with the chassis and / or with the gearmotor housing, preferably integral with it but possibly also fixed on it.
    According to a particular feature, this damper extends, by its orthogonal projection on the plane of the two motor and output axes, in a position located between these two axes.
    Preferably, the damper is located, for the majority of its projected area parallel to the axis of the motor and to the outlet axis, preferably for more than 75% and for example 100%, inside of a volume located between the plane of said axes and the two planes called tangent planes defined as:
    on the one hand tangent to the gearmotor housing in its part surrounding the motor, and
    - on the other hand tangent to the gearmotor housing in its part surrounding the outlet axis (which may include the fixing flange (s)) or tangent to the caliper barrel.
    These types of arrangements make it possible to move the damper away from the housing, and potentially thus improve its efficiency, while not exceeding little or no of this main bulk volume, which is typical of a geared motor with this type of architecture. .
    It is thus possible to limit or avoid modifying the layout of the gearmotor as well as the shape of the stirrup and the yoke, compared to the existing models.
    According to certain embodiments, the damper is anchored on, and extends laterally from, the geared motor housing in its part which surrounds the electric motor and extends along the caliper barrel. This extension is preferably but not necessarily in a direction perpendicular to the axis of said electric motor.
    In many configurations, such an arrangement can allow an action applying directly to the vibrations of the motor.
    -5and its housing part, which are often the most important, and thus help to optimize the efficiency of the shock absorber.
    In the embodiments where the damper is arranged on the motor, according to an advantageous feature of the invention, the geared motor comprises a part which carries the damper and forms a cover fixed so as to surround the geared motor housing in its part extending along the caliper barrel or closing off its end on the motor side.
    This shock absorber cover is for example fixed from the assembly of the gearmotor group, and can be provided of several types for the same main housing. According to a particular feature, this cover is also arranged so that it can be assembled on the main housing in different angular positions.
    This architecture thus makes it possible to produce several versions of the complete geared motor on the same electromechanical base and therefore with a low additional cost. It can be several different types intended for different models of vehicle, or several different types each corresponding to a different side of the vehicle, for example one for the brakes on the right side and the other for the brakes of the left side of the vehicle.
    According to a family of embodiments of the invention, called shock absorbers with support, the damping device comprises at least one contact part which is anchored to the extension of the gearmotor housing and is arranged to come into abutment against or be anchored to a part of the caliper housing (or even the yoke) when the gearmotor is mounted on said caliper.
    According to certain embodiments operating by support, the contact part is formed from a rigid material, which is connected to the rest of the gearmotor by a deformable part where damping occurs. The deformable part is for example produced by a thinning of the rigid material. The damping is then done by a damping material which is integral with the rigid material on both sides of this deformable part, and thus absorbs part of the energy of this deformation.
    In other embodiments of this family, alternatively or in combination, said contact part then comprises a damping material, or is anchored to the gearmotor housing by means of such a damping material, making thus a shock absorber by transmission with the caliper.
    According to a particular feature, this support is done simply by pressing on the caliper housing, for example created by tightening when fixing the gearmotor housing to the caliper, preferably in its part forming the caliper barrel.
    According to another particularity, alternatively or in combination, this support is also produced or in addition by a fixing device, for example by a complementary cooperation of shapes, with or without local clamping. It is for example a pin (for example carried by the shock absorber) engaged in a housing (for example formed in the caliper, during its manufacture or during the mounting of the gearmotor); and / or a narrowing type engagement such as a dovetail. This fixing device is made for example with the shape of the bracket as existing for mounting a geared motor according to the prior art, or comprises for example a specialized part such as a shape or a lug carried by the 'caliper, manufacturing or in the form of a later added piece for mounting the gearmotor according to the invention.
    According to another family of embodiments of the invention, called inertial dampers, the damping device comprises at least one counterweight which is fixed to or embedded in the extension anchored on the geared motor housing by means of a damping material, for example completely free, that is to say without being connected to anything else.
    This damping material is chosen to provide energy absorption during its deformation, thus producing a beating damper or an inertial mass damper for one or more determined frequencies, for example for achieving modal damping.
    This type of inertial damper can for example be determined at design to be tuned with one or more specific frequencies to be absorbed, to achieve modal damping, for example
    -7 determined for a specific model of brake or vehicle or vehicle sub-assembly, or a combination of these, for example to specifically target one or more faults noted previously.
    It should be noted that these two families of shock absorbers, by support and inertial, relate to the operating mode of the shock absorber but can be combined together for example with a shock absorber having two parts operating differently. For example, geometrically separate such as two different extensions, but also in the same part such as a support connection, one of the parts of the support chain including a more or less suspended mass part forming a counterweight to provide inertial damping. .
    For all types of geometry and operation, and their combinations, the invention contemplates different types of damping materials, including all those known to those skilled in the art, particularly in the automotive field.
    In one type of so-called friction embodiment, the damping material comprises a plurality of elements compressed together so as to form an assembly whose deformation generates friction in said compressed elements.
    These are, for example, two parts that are movable with one another and bear one against the other, for example by clamping, the relative displacement of which generates friction, with or without local clamping.
    According to an advantageous feature, the friction damping material comprises an agglomeration of fibers or threads held together providing increased friction by multiplication of the friction surfaces and / or the support forces between them, for example as envisaged in the document FR. 2,834,321. This retention is preferably carried out without a binder, for example by compression or by interlacing, in particular agglomerated or compressed or interlaced or intertwined or knitted metallic wire, or a combination of these characteristics.
    In another type of so-called inertial embodiment, possibly combined with the friction type, the damping material comprises a flexible viscoelastic material, the deformation of which causes absorption by shearing of said material internally and / or at its surface. anchoring, in particular an amorphous or composite material consisting of or based on plastomer or elastomer or a mixture of said materials. It is typically a non-rigid material and preferably having notable viscoelastic characteristics, for example specifically chosen and / or adjusted as a function of the targeted damping characteristics, in amplitude and / or in frequency.
    According to an advantageous feature, the shear damping material is anchored to rigid parts which are intercalated or interdigitated or intertwined with one another, and is inserted or distributed between them, for example by casting or injection. Such a reinforced shearing effect on the work surface is obtained for example according to the methods disclosed in document EP 1 568 913.
    This shear damping material is for example glued to, or compressed between, or embedded in rigid parts belonging to the extension of the gearmotor housing, when the damping material is directly supported against the stirrup.
    It is also, for example, glued or compressed or embedded between: on the one hand rigid parts belonging to the gearmotor housing, and other rigid parts belonging to the contact part which is supported on or fixed to the stirrup.
    The invention is here exposed and illustrated in for a disc brake with sliding caliper, but is also provided for a disc brake with fixed caliper. It is also provided for other types of brake, such as a drum brake, when the general shape of the gearmotor and its axes allow it.
    According to yet another aspect, the invention provides a method of optimizing a geared motor or a brake of an existing model, or of adapting said geared motor or brake to a given model of vehicle, characterized in that it includes the following stages:
    - for a given gearmotor mounted on a given brake and / or on a
    -9 given vehicle, determination of a frequency to be absorbed, by physical tests or numerical simulation;
    - As a function of said frequency, calculation of one or more geometrical parameters and / or of material defining a damper to be anchored on said geared motor to produce a geared motor according to as described here.
    The position of the shock absorber is advantageously chosen so that the damping is as effective as possible according to the most harmful vibrations, to be eliminated as a priority, and then so as to minimize the mass and / or quantity of material to be add to the gearmotor to form this shock absorber.
    It should be noted that a symmetrical arrangement of the damper of the geared motor does not depart from the scope of the present invention.
    The invention thus makes it possible to optimize a gear motor and / or an existing brake, for example to improve it or to adapt it to a new brake or to a new vehicle or vehicle sub-assembly.
    Still according to another aspect, the invention proposes a method of manufacturing or assembling a geared motor or a brake as set out here, characterized in that it comprises the following steps:
    - manufacture or assembly of a geared motor group of a specific type;
    - depending on the brake or geared motor version to be produced, for example depending on the vehicle model or the left or right side of the vehicle, choice:
    a type of shock absorber to be anchored to said gearmotor in order to produce a geared motor as described here, in particular in the form of a cover capable of closing the gearmotor housing at its end surrounding the motor on the side of the caliper, and / or o a position in which to fix such a damper to said geared motor; and
    - fixing to said gearmotor of a shock absorber of said chosen type and / or in said chosen position, in particular by ultrasonic welding in
    -10the case of a plastic housing and / or shock absorber.
    According to another aspect, the invention provides a vehicle disc brake, characterized in that it comprises an electric actuator including a geared motor group as described here; or a vehicle or vehicle sub-assembly comprising such a brake.
    Various embodiments of the invention are provided, integrating, according to all of their possible combinations, the different optional characteristics described here.
    List of Figures
    Other features and advantages of the invention will emerge from the detailed description of a mode of implementation which is in no way limitative, and from the appended drawings in which:
    - FIGURE 1 and FIGURE 2 are views to scale which illustrate to scale a disc brake with sliding caliper on yoke, in its version on the left side, equipped with an electric gearmotor group and mounted on a non-rotating wheel motor, according to the state of the art:
    o in FIGURE 1, in end view along the axis of the brake piston from inside the vehicle, shown with the rim, and o FIGURE 2, in perspective, shown without the rim and during the tightening of the screws fixation ;
    - FIGURE 3 is a scale view in perspective to scale which illustrates, in its version on the left side, with the caliper and the brake yoke of FIGURE 1, a first example of embodiment of the invention comprising a geared motor unit provided with an elastomer shear damper, carried by the cover of the electric motor and operating by pressing on the caliper;
    - FIGURE 4a and b illustrate in perspective to scale the cover with brake damper of FIGURE 3, in overall view from inside the cover, and respectively in detail of the shock absorber;
    FIGURE 5 is an end view along the axis of the electric motor, which illustrates to scale the geared motor group of FIGURE 3, mainly in the left version;
    - FIGURE 6 is an end view from inside the vehicle which illustrates to scale the brake of FIGURE 3 mounted on a non-driving wheel;
    FIGURE 7 is a scale view in perspective to scale which illustrates, in its version on the left side, with the caliper and the brake yoke of FIGURE 1, a second exemplary embodiment of the invention comprising a geared motor unit provided with a free mass shock absorber, carried by the cover of the electric motor and operating by reinforced friction;
    - FIGURE 8 is a perspective view to scale which illustrates the gearmotor group of the second embodiment in its version on the right side;
    - FIGURE 9 is an end view from inside the vehicle which illustrates to scale the brake of FIGURE 7 mounted on a non-driving wheel;
    - FIGURE 10a and b illustrate to scale the cover with brake damper of FIGURE 7, in end view along the axis from the inside of the cover, and respectively in transparent perspective of a sagittal section passing through the 'shock absorber;
    - FIGURE 10c illustrates a variant of the cover of FIGURE 7 in which the counterweight carries a connecting pin with the stirrup;
    - FIGURE 11 is a scale view in perspective to scale which illustrates, in its version on the left side, with the caliper and the brake yoke of FIGURE 1, a third exemplary embodiment of the invention comprising a geared motor unit provided with an interdigitated elastomer shear damper, carried by a lateral arm projecting from the assembly plane and operating by pressing on an arm of the yoke;
    - FIGURE 12 is an end view along the axis of the electric motor, which illustrates to scale the geared motor group of FIGURE 11, mainly in the left version;
    FIGURE 13a sets a partial view in section from below which illustrates the structure of the interdigitated ribs of the damper of FIGURE 12;
    - FIGURE 13b is a partial schematic view along section A-A of FIGURE 12, which functionally illustrates the internal structure of the shock absorber according to a particularity with a deformable shock absorber;
    - FIGURE 13c is a view along section A-A which illustrates an exemplary embodiment of the damper of FIGURE 13b;
    - FIGURE 13d sets a view according to section A-A which illustrates an embodiment of the damper of FIGURE 12 in a variant in contact with the damping material;
    - FIGURE 14 is a perspective view to scale which illustrates the geared motor unit of FIGURE 11 shown alone; and
    - FIGURE 15 is a perspective view to scale which illustrates the brake of the third embodiment in its right-hand version.
    State of the art
    FIGURE 1 and FIGURE 2 illustrate an example of disc brake with sliding caliper on yoke, in its version on the left side, equipped with an electric geared motor group 9 and mounted on a non-driving wheel 62, according to the state of the art .
    On one side of the stirrup barrel 71, the stirrup 7 has arms 78 which extend in opposite directions towards sliding columns 72, on which it is fixed 70 by stirrup fixing screws. These balusters hold the stirrup 7 sliding on the yoke 8, which is fixed 80 on the fixed part 81 of the half-train, the hub of which carries the wheel 62 and the disc 6.
    It will be noted that, as is common, this geared motor has a symmetrical external shape around the plane containing the axis A91 of the motor 91 and the axis 192 of the output mechanism, which is coaxially coupled in rotation to a contained screw-nut mechanism. in the hydraulic piston of the caliper and enclosed by the caliper barrel 71. Because of this symmetry, the same model of gearmotor can be mounted on either a left brake or a right brake, which have a different shape between them and for example symmetrical.
    Description of examples of embodiments First example of embodiment
    FIGURES 3 to FIGURE 6 illustrate, in its version on the left side, a first exemplary embodiment of the invention comprising a geared motor group 1 provided with an elastomer shear damper 1320, carried by the cover 130 of the electric motor 11 and operating by pressing on the caliper. This gearmotor is shown here mounted on a caliper 7 and its yoke 8 of an existing brake, here that of FIGURE 1.
    As can be seen, the general external shape of the geared motor 1 according to the invention is similar to that of the geared motor 9 of FIGURE 1. It has for example a similar or identical internal mechanism. It has an outlet and coupling mechanism 122, as well as a fixing plane P70 provided with flanges for fixing screws 701, which are compatible with this same bracket 7, or even exactly identical with those of the geared motor 9. It is thus possible to use this geared motor 1 according to the invention with an existing brake caliper and yoke, and thus to improve its behavior in vibration while minimizing the necessary changes and the constraints which go with it.
    In this example, the damping device 13 comprises a cover 130 which closes the geared motor housing on the motor side and carries a rigid extension tab 131 whose shape has a hollow advantageously crossed by rigid ribs 1311 interdigitated therebetween which are drowned in a shear damping material 1320.
    As illustrated in FIGURE 4a and b, the housing for receiving the damping material advantageously comprises at least one opening 1321 of said extension 131 allowing the extension to be deformed by the vibrations of the housing to be damped. The vibrations transmitted by the support P73 of the extension on the stirrup deform the extension into two parts movable between them, thus deforming the damping material which joins them, which thus absorbs the energy of these vibrations.
    In this example, as illustrated in FIGURE 5, this contact part 132 is formed by the face of the damper which is directed towards
    -14l'étrier, and is arranged to bear P73 against the caliper barrel 71, here on a shoulder 73 of the caliper 7 which protrudes radially at the base of the barrel 71.
    This support P73 is produced in a direction parallel to the direction of tightening of the fixing interface P70, 701, under the effect of the tightening of the gearmotor 1 on the fixing plane P70 of the stirrup. In this example, the tightening direction is parallel to the output axis 12 of the geared motor and to the axis of the motor, and directed towards the disc 6 under the effect of the screws 701.
    Alternatively or in combination, the damping material is accessible through this opening, or it protrudes through and beyond this opening to form all or part of the contact part by interposing between the extension and the stirrup .
    As illustrated in FIGURE 4b, an opening 1312 of small diameter is present in one of the internal plastic walls 1311 of the shock absorber so as to establish an elastomer bridge which keeps the material 1320 in its captive position inside the shock absorber. This opening 1312 is for example produced by drilling after molding, which makes it possible to keep an unrollable shape for the ribs 1311 and the general shape of the part 130 carrying the damper 13.
    FIGURE 5 illustrates the arrangement of the damper 13, the extension of which is located, for the majority of its surface projected parallel to the axes Ail and A12, inside a volume V130 whose imprint is here represented in dashed line. This volume is delimited on each side of the plane of said axes and the two tangent planes T130, here represented by a thin dashed line which is tangent to the external volumes of the motor part 11 and of the attachment 701 of the outlet part 122, of the gearmotor housing 1.
    This figure shows the geared motor 1 in its version for one side, here the left brake. The shape of the gearmotor is different in its version for the opposite side, and is illustrated here by its shock absorber 13 ’shown in dotted lines. As will be understood, the same cover 130 can be mounted on the same basic geared motor housing in different positions. In this example, a first angular position (oriented to the right in FIGURE 5) gives a version gearmotor
    -15left, while a second angular position (dotted, oriented to the left in FIGURE 5), gives a gearmotor in the right version.
    As seen in FIGURE 6, the left geared motor 1 can be mounted on the same brackets 7 and yoke 8 as the geared motor 9 of the prior art (FIGURE 1), provided that the correct version of the geared motor is chosen, here the version left.
    In the example illustrated here, the support P73 on the stirrup 7 is here produced directly by contacting the damping material 1320 on the metal of the stirrup case.
    In other variants not detailed here, the shock absorber further comprises a rigid piece called mobile, for example of the same material as the rest of the cover, which is only fixed to the gearmotor housing by means of the material of amortization. It is then the moving part which is supported on the caliper housing, or even fixed to it.
    This movable part carries for example so-called mobile ribs which are interdigitated with those said to be fixed which are integral with the cover. The damping material is placed between the fixed ribs and the movable ribs and anchored to it, so as to transmit between them the vibrations of the gearmotor by absorbing them by shearing.
    Second example of embodiment
    FIGURES 7 to FIGURE 10 illustrate a second exemplary embodiment of the invention which will only be described in its differences. This example is here illustrated in its left version, except for FIGURE 8 which represents the right version, with a shock absorber 23 'in a different and symmetrical position.
    This embodiment comprises a geared motor group 2 provided with an inertial damper 23, carried by the cover 230 of the electric motor 11 and / or operating by reinforced friction. Again, the geared motor 2 is shown mounted on a caliper 7 and its yoke 8 of an existing brake, here that of FIGURE 1.
    As can be seen, the geared motor 2 is of the same shape as, and for example identical to the geared motor 1 of FIGURE 3, apart from its
    -16 cover 230 with shock absorber 23. It thus has the same advantages of adaptability to existing brakes.
    In this example, as illustrated in more detail in FIGURE 10b, the damping device comprises a counterweight 231 which is embedded in a damping material 2320, itself inserted into a hollow in the extension 23 of the cover 230 of the electric motor 11.
    There is thus obtained a beating damper, or a mass with inertia, the mass, friction and geometry characteristics of which are chosen to tune it to one or more determined frequencies, the absorption of which is more specifically sought.
    In this example, the damping material 2320 is produced by an agglomeration of metallic threads intertwined and compressed together. Once compressed in its housing, this agglomerate is possibly covered by a holding resin, or even partially embedded in a resin which is cast, injected or deposited after compression.
    In the example illustrated in FIGURE 7, the damper 23 does not touch the caliper housing and thus functions only as an inertial damper.
    In a variant illustrated in FIGURE 10c, the counterweight has one of a rigid part such as a pin 2321 which protrudes towards the housing of the stirrup 7, which comes to rest on it or even lodge in a borehole made at its area. The flyweight is thus mechanically connected to the housing, rigidly or with a certain friction depending on the adjustment and the method of fixing the rigid part 2321 to the housing. The shock absorber then operates by a combination of inertial damping and damping by support / transmission.
    As seen in FIGURE 9, the left geared motor 2 can be mounted on the same brackets 7 and yoke 8 as the geared motor 9 of the prior art (FIGURE 1), provided that the correct version of the geared motor 2 is chosen according to the invention, here the left version.
    In this example, the same cover 230 can be used with the same basic housing to give the left or right version of the gear motor 2, depending on the angular position in which they are assembled.
    -17Third example of embodiment
    FIGURES 11 to FIGURE 15 illustrate a third exemplary embodiment of the invention.
    This embodiment comprises a geared motor group provided with an interdigitated elastomer shear damper, carried by a lateral arm projecting from the assembly plane and operating by pressing on an arm of the yoke. Again, the gearmotor 3 is shown mounted on a caliper 7 and its yoke 8 of an existing brake, here that of FIGURE 1.
    This example is here illustrated in its left version, except for FIGURE 15 which represents the right version, with a damper 33 'in a different and symmetrical position.
    The geared motor 3 has a shape similar to the geared motor 1 of FIGURE 3. It thus has the same advantages of adaptability to existing brakes.
    In this example, the damping device 33 comprises a tab 331 which extends laterally away from the geared motor housing 3 perpendicular to the plane of its axes Ail and A12. This tab carries a damping material, here by shearing, which comprises a support portion 332 arranged to come into abutment against the caliper housing 71. Advantageously, the support surface 332 forms a ramp ensuring contact with stirrup. In this example, the damper 33 presses P73 on one of the arms 78 of the stirrup 7, in a direction parallel to the tightening direction of the fixing interface P70, 701, which direction is here parallel to the axis A12 of output 12 of the gearmotor and axis Ail of the motor.
    In this example, the tab 331 protrudes from the gearmotor housing in an anchoring region situated at the level of the fixing plane P70 of the gearmotor, which brings it substantially to the level of the arm 78. This anchoring region is here located in the central part of the gearmotor housing, between the two axes of the gearmotor, but could also be offset towards one or the other, for example at the level of the motor axis Ail. The tab 331 has an arc shape, and ends in an orientation substantially perpendicular to the arm 78.
    -18As illustrated in FIGURE 13a, at its end, it carries a hollow crossed by rigid ribs 3311 interdigitated between them, which are embedded by a damping material 3320 in shear, for example an elastomer. One of the ribs 3311 has an orifice 3312, for example drilled after manufacture of the housing, through which an elastomer bridge is made which secures the damping material 3320 to the rest 331 of the damper 33.
    In the example illustrated in FIGURE 13b and FIGURE 13c, the contact part is anchored to the gearmotor housing via a deformable part 331D, here formed by a narrowing of the section of the lug 331 under the effect of 'a groove 3321a in the side walls of the shock absorber. This deformable part 331D separates the damper into a substantially fixed part 331F relative to the lug 331, and a substantially mobile part 331M which comprises the contact part 332. The damping material 3320 is disposed between these two fixed parts 331F and mobile 331M , glued to them and drowning their ribs 3311.
    The contact part 332 here forms an inclined ramp which bears P73 on the stirrup, causing compression P731 of the damping material. The vibrations of the gearmotor are thus transmitted to the contact part 332 and therefore to the stirrup by means of the damping material, which dissipates part of their energy by compression and shear.
    In a variant illustrated in FIGURE 13b, said contact part 332b itself comprises the damping material. This damping material 3320 protrudes from its hollow towards the geared motor, over a certain thickness between the tab 331 and the stirrup arm 78, through an outlet opening formed in the walls of the hollow. This protrusion forms the contact part 332b, which is thus pressed by the tab 331 against the stirrup arm 78, in a direction parallel to the direction of tightening of the fixing interface P70, 701, here parallel to the axis. output 12 of the gear motor and to the Ail axis of the motor.
    In FIGURE 12 is illustrated the arrangement of the damper 33, which is anchored and extends, by its orthogonal projection on the plane of the two axes of
    -19motor and output, in a position located between these two axes Ail and A12. This figure illustrates the gear motor in version for the left side, while the dotted lines located on the other side illustrates the position of the damper 33 'for a gear motor in version for the right side.
    FIGURE 15 illustrates the version for the right side, mounted on a caliper 7 'and a yoke 8' corresponding to the same brake in its specific version for the right side of the vehicle.
    According to a variant not detailed here, the lug forming the damper came integrally with the part 11 of the gearmotor housing which surrounds the motor, and can be mounted on the other part 12, 122 of the gearmotor housing in two angular positions different, each giving a different version of the gearmotor, for example a left and a right.
    Of course, the invention is not limited to the examples which have just been described and numerous modifications can be made to these examples without departing from the scope of the invention.
    Nomenclature
    I gearmotor group (MGU) left version
    II MGU electric motor MGU reducer
    122 MGU output part
    13, 13 'shear damper by support (left position, right position)
    130 shock absorber cover
    131 shock absorber walls
    1311 damper ribs
    1312 elastomer holding hole
    132 shock absorber contact part
    1320 shear damping material
    1321 damping material outlet
    2, 2 'gearmotor (MGU) left version, right version
    23, 23 'inertial friction damper (left position, right position)
    -20230 shock absorber cover
    231 damper walls
    2320 friction damping material
    3, 3 'gearmotor (MGU) left version, right version
    33, 33 'shear damper by support (left position, right position)
    331 shock absorber tab and walls
    331D deformable part of the shock absorber
    331F, 331M fixed and movable parts of the shock absorber
    3311 shock absorber ribs
    3312 elastomer holding hole
    332 shock absorber contact part
    3320 shear damping material
    3321a shock absorber stiffness reduction groove
    3321b outlet for damping material brake disc brake shoe wheel rim
    7, 7 'left brake caliper, right caliper mounting on baluster
    701 MGU mounting on the stirrup stirrup barrel balusters shoulder of stirrup barrel
    P73 shock absorber support on the caliper
    P731 compression of the shock absorber under the effect of the caliper arm ramp
    8, 8 'left brake clevis, right clevis fixing on geared motor half-gear (MGU) according to the state of the art electric motor (state of the art)
    Garlic axis of the MGU engine
    A12 MGU output axis
    A91 axis of electric motor (state of the art)
    -21A92 MGU output axis (state of the art)
    P70 fixing plane of the MGU on the caliper T130 plane tangent to the cylinders of the MGU V130 interior volume to the main dimensions of the MGU
    权利要求:
    Claims (14)
    [1]
    1. Device (1, 2, 3) of electric gearmotor for disc brake caliper, intended to be coupled to a disc brake caliper (7) to drive, within said caliper, a translation mechanism of at least a brake shoe (61) said gearmotor comprising a self-supporting box containing an electric motor (11) and a reduction mechanism (12) mechanically connected to provide at the output of said reducer a drive in rotation along an output axis (A12), said housing being arranged to be fixed on the end of a stirrup barrel (71) by a fixing interface (P70) which surrounds said outlet axis (Ail), said electric motor being arranged with its axis of rotation (Ail ) next to and parallel to the outlet axis (A12), said gearmotor being characterized in that it comprises at least one damping device (13, 23, 33) rigidly anchored on the gearmotor housing and which extends laterally with respect to said axes (Ail, A12).
    [2]
    2. Geared motor according to the preceding claim, characterized in that the damper (13, 23) is located, for the majority of its surface projected parallel to the axes, inside a volume (V130) delimited between the plane of said axes and two planes (T130), called tangent planes, defined as each:
    on the one hand tangent to the gearmotor housing in its part (11) surrounding the motor, and
    - On the other hand tangent to the gearmotor housing in its part (122) surrounding the outlet axis or tangent to the caliper barrel (71).
    [3]
    3. Geared motor according to claim 1, characterized in that the damper (13, 23) is anchored on and extends laterally from the geared motor housing in its part (11) which surrounds the electric motor and
    -23 extends along the stirrup shaft (71)
    [4]
    4. Gearmotor according to the preceding claim, characterized in that it comprises a part which carries the damper (13, 23) and forms a cover (130, 230) fixed so as to surround the gearmotor housing in its part s' extending along the caliper barrel (71) or closing its end on the motor side (11).
    [5]
    5. Gear motor according to any one of the preceding claims, characterized in that the damping device (13, 33) comprises at least one contact part (132, 332) which is anchored to the extension (13, 33) of the gearmotor housing and is arranged to bear against or be anchored to a part of the caliper housing (7) when the gearmotor is mounted on said caliper, and in that:
    - Said contact part comprises a damping material, and / or
    - is anchored to the gearmotor housing by means of such a damping material, and / or
    - Is anchored to the gearmotor housing via a deformable part which is integral with such a shock absorbing material arranged to absorb its deformation;
    thus providing a shock absorber by transmission with the caliper.
    [6]
    6. Geared motor according to any one of the preceding claims, characterized in that the damping device comprises at least one counterweight (231) which is fixed to or embedded in the extension (23) anchored on the geared motor housing by the intermediary of a damping material (2320) chosen to provide an absorption of energy during its deformation, thus producing a damper with beater or inertial mass for one or more determined frequencies.
    [7]
    7. Geared motor according to any one of claims 5 or 6, characterized in that the damping material comprises a plurality of elements compressed together so as to form an assembly whose deformation generates friction in said compressed elements.
    -248. Gear motor according to the preceding claim, characterized in that the damping material comprises an agglomeration of fibers or wires held together, without binder or with a binder which coats less than 50% of the surface of said fibers or wires, in particular agglomerated metal wire or compressed or intertwined or intertwined or knitted or a combination of these.
    [8]
    9. Gear motor according to any one of claims 5 to 8, characterized in that the damping material comprises a flexible material whose deformation generates absorption by shearing of said material internally and / or at its anchoring surface, in particular an amorphous or composite material consisting of or based on plastomer or elastomer or a mixture of said materials.
    [9]
    10. Geared motor according to the preceding claim, characterized in that the damping material is anchored to, and distributed between, rigid parts interposed or interdigitated therebetween.
    [10]
    11. Gearmotor according to any one of claims 9 to 10, characterized in that the damping device (13) comprises a cover (130) which closes the gearmotor housing on the motor side and carries an extension tab ( 131) rigid, the shape of which has a hollow crossed by rigid ribs (1311) interdigitated between them which are embedded by a damping material (1320) in shear, and in that said damping material protrudes through at least one opening ( 1321) of said extension (131) to form the contact part (132), which is arranged to bear against the caliper barrel (71) in a direction parallel to the tightening direction of the interface of fixing (P70, 701).
    [11]
    12. Gearmotor according to any one of claims 9 to 11, characterized in that the damping device (33) comprises a lug (331) which extends laterally from the gearmotor housing (3), which carries a
    -25 hollow crossed by rigid ribs (3311) interdigitated therebetween which are embedded by a damping material (3320) in shear, and in that said damping material exceeds by at least one opening (3321) of said extension ( 331) to form the contact part (332), which is arranged to come into abutment against the caliper housing (71) in a direction parallel to the direction of tightening of the fixing interface (P70, 701).
    [12]
    13. Vehicle disc brake, characterized in that it comprises an electric actuator including a geared motor unit according to any one of the preceding claims.
    [13]
    14. A method of optimizing a geared motor or a brake of an existing model, or of adapting said geared motor or brake to a given model of vehicle, characterized in that it comprises the following steps:
    - for a given geared motor mounted on a given brake and / or on a given vehicle, determination of a frequency to be absorbed, by physical tests or numerical simulation;
    - as a function of said frequency, calculation of one or more geometric parameters and / or of material defining a damper to be anchored on said geared motor to produce a geared motor according to any one of claims 1 to 12.
    [14]
    15. A method of manufacturing or assembling a geared motor according to any one of claims 1 to 12 or a brake according to claim 13, characterized in that it comprises the following steps:
    - manufacture or assembly of a geared motor group (1) of a specific type;
    - depending on the brake or gearmotor version to be made, choice:
    o of a type of shock absorber (13, 33) to be anchored to said geared motor to produce a geared motor according to any one of claims 1 to 12, and / or o of a position in which to fix such a shock absorber on said
    -26motor gearbox; and fixing to said gearmotor a shock absorber of said chosen type and / or in said chosen position.
    类似技术:
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    同族专利:
    公开号 | 公开日
    WO2018001583A1|2018-01-04|
    FR3053422B1|2019-07-19|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US20120325601A1|2009-12-23|2012-12-27|Lucas Automotive Gmbh|Sub-Assembly for an Electromechanical Brake Actuator|
    WO2015151052A1|2014-04-01|2015-10-08|Freni Brembo S.P.A.|Brake gear motor group|
    DE102014106732A1|2014-05-13|2015-11-19|Küster Holding GmbH|Motor vehicle actuator, in particular brake actuator|
    FR2834321B1|2001-12-31|2004-02-27|Bosch Gmbh Robert|BRAKING DEVICE, PARTICULARLY FOR A MOTOR VEHICLE|
    FR2866402B1|2004-02-13|2008-01-25|Bosch Gmbh Robert|VIBRATION DAMPER FOR DISC BRAKES.|FR3077607B1|2018-02-08|2020-08-14|Foundation Brakes France|CUSHIONING OF A BRAKE GUIDE COLUMN BY A DAMPER MATERIAL IN A BRAKE ACTUATOR HOUSING|
    KR102310944B1|2019-09-10|2021-10-13|계양전기 주식회사|Electric parking brake actuator assembly|
    FR3103526B1|2019-11-26|2021-11-12|Foundation Brakes France|COVER FOR MOTOR VEHICLE BRAKE MOTOR REDUCER ASSEMBLY INCLUDING AN OVERMOLDED BODY AROUND AN ACOUSTIC WEDGE|
    FR3104662B1|2019-12-12|2022-01-14|Foundation Brakes France|Planetary carrier comprising at least one trunnion mounted floating in the body of the planetary carrier|
    法律状态:
    2017-05-22| PLFP| Fee payment|Year of fee payment: 2 |
    2018-01-05| PLSC| Search report ready|Effective date: 20180105 |
    2018-05-25| PLFP| Fee payment|Year of fee payment: 3 |
    2020-05-20| PLFP| Fee payment|Year of fee payment: 5 |
    2021-05-19| PLFP| Fee payment|Year of fee payment: 6 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1656232|2016-06-30|
    FR1656232A|FR3053422B1|2016-06-30|2016-06-30|POWER BEARING ASSEMBLY FOR ELECTRIC DISC BRAKE ACTUATOR, BRAKE AND METHOD OF INDUSTRIALIZATION AND ASSEMBLY|FR1656232A| FR3053422B1|2016-06-30|2016-06-30|POWER BEARING ASSEMBLY FOR ELECTRIC DISC BRAKE ACTUATOR, BRAKE AND METHOD OF INDUSTRIALIZATION AND ASSEMBLY|
    PCT/EP2017/058055| WO2018001583A1|2016-06-30|2017-04-05|Gear motor unit for an electrical disc brake actuator, brake and method for industrialised production and assembly|
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