• 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 a device for removable mounting of an airbag module, comprising at least two hooks (11) connected to one of the airbag module (1) or the steering wheel (2), the hooks (11) cooperating with insertion means (35) located on the other of the airbag module (1) or the steering wheel (2) and an elastic ring (30) to form means for holding the hooks (11) in areas interaction ,, the elastic ring (30) comprising: - first portions (31) extending in the interaction zones - a second portion (32), characterized in that the mounting device comprises guide means (33, 34) of the elastic ring (30) causing the displacement of the first portions (31) out of the interaction zones, during the displacement of the second portion (32) in a direction away from the axis of rotation of the flywheel (2).
    公开号:FR3083189A1
    申请号:FR1855985
    申请日:2018-06-29
    公开日:2020-01-03
    发明作者:Fabrice Moinard；Frederic Tarte；Rene FLIEGNER；Antoine DUCARDONNET
    申请人:Autoliv Development AB；
    IPC主号:
    专利说明:

    DEVICE FOR REMOVABLE MOUNTING OF AN AIR BAG MODULE [0001] The present invention generally relates to a device for removable mounting of an air bag module on a steering wheel, [0002] Document US2003173759 describes an arrangement for mounting removably an airbag module on a steering wheel. The arrangement includes a mounting plate which defines openings for receiving the feet of an airbag unit. The plate is provided with a spring which extends through the openings to provide a snap fastening. When a pushing force is exerted on a determined point of the spring, it is moved in a predetermined manner and the portions of the spring are guided so that they no longer exceed the corresponding openings, thus allowing the module to be released. The pushing force to unlock the spring is applied to a small area of the spring which can cause improper handling during the unlocking operation.
    An object of the present invention is to overcome the drawbacks of the prior art document mentioned above and in particular, to provide a removable mounting device whose effort required to unlock the airbag module is reduced and whose disassembly is facilitated by retaining efforts to retain the module.
    For this a first aspect of the invention relates to a removable mounting device for an airbag module on a steering wheel, the mounting device comprises at least two hooks connected to one of the airbag module or steering wheel, the hooks cooperating with insertion means situated on the other side of the airbag module or of the steering wheel and an elastic ring to form means for holding the
    - 2 hooks on the other of the airbag module or of the steering wheel in areas of interaction with the hooks,
    - the elastic ring being held in position by locking means on the other of the airbag module or of the steering wheel, the elastic ring comprising:
    - first portions extending into the interaction zones to form the means for holding the hooks
    - A second portion located between the first portions of the elastic ring, characterized in that the mounting device comprises means for guiding the elastic ring causing the displacement of the first portions of the elastic ring outside the areas of interaction with the hooks to release the hooks on the other side of the airbag module or the steering wheel, when moving the second portion in a direction away from the axis of rotation of the steering wheel.
    Thus, we understand that disassembly is carried out by pulling on the rod rather than pushing. This makes it possible to design a system requiring a lower disassembly effort because there are fewer limits to the length of movement of the second portion of the elastic ring necessary for disassembly. When the airbag module is mounted on the steering wheel, there are generally fewer parts near the second part of the rod when it moves away from the axis of rotation of the steering wheel. Thus, larger lever arms can be defined to reduce the forces of deformation of the rod and therefore of disassembly. Thus, the device makes it possible to disassemble by moving the second portion between 5 and 10mm. A movement in this range also allows disassembly with a force of less than 100N. It is also understood that the axis of rotation of the steering wheel is the axis around which the steering wheel can rotate to steer a vehicle on which it is mounted.
    The insertion means can take the form of one or more holes, openings, grooves or recesses for example. The
    - 3 guide means can take the form of one or more pins, grooves, grooves or ribs for example.
    According to another alternative embodiment, the hooks are linked to the airbag module, the mounting device further comprising a mounting plate designed to be mounted on the frame of the steering wheel,
    - the mounting plate comprising a plurality of openings forming the insertion means, each opening being adapted to receive a hook, the means for blocking the elastic ring being formed on the mounting plate or the steering wheel.
    The mounting plate makes it possible in particular to facilitate assembly operations. Indeed, the elastic ring can be pre-assembled on the mounting plate before it is mounted on the steering wheel.
    According to another alternative embodiment, the guide means comprise, in the vicinity of the elastic ring, between the second portion and each first portion of the elastic ring,
    - a pivot stud limiting the movement of the elastic ring when the second portion is moved to cause rotation of the first portions, outside the area of interaction with the corresponding hook.
    The pivot pads are used to convert the translational movements of the second portion into the rotational movement of the first portions.
    According to another alternative embodiment, the device comprises two symmetrical pivot studs with respect to a plane containing the axis of rotation of the steering wheel.
    According to another alternative embodiment, the guide means comprise, in the vicinity of the elastic ring between the second portion and the pivot stud, a guide stud of the elastic ring.
    - 4 In another alternative embodiment, the device comprises two symmetrical guide pads relative to a plane containing the axis of rotation of the steering wheel.
    The elastic studs make it possible to correctly guide the movement of the elastic ring in the direction of disassembly, that is to say in the direction moving away from the axis of rotation of the steering wheel. They thus make it possible to avoid complete rotation of the rod, in particular in a direction parallel to the axis of rotation of the steering wheel; rotation which can complicate the simultaneous disengagement of the hook from the hooks.
    According to another alternative embodiment, the elastic ring is open, the first portions being located at the free ends of the elastic ring.
    The tensile force is reduced by the use of an open rod.
    According to another alternative embodiment, the second portion of the elastic ring is located substantially equidistant from the first portions on the elastic ring.
    This particular arrangement makes it possible to have a symmetrical displacement of the first portions.
    According to another alternative embodiment, the locking means prevent the movement of the elastic ring in a direction perpendicular to the direction away from the axis of rotation of the flywheel and contained in a plane perpendicular to the axis of rotation of the steering wheel.
    The locking means can also block a movement in the direction moving away from the axis of rotation of the steering wheel beyond a predetermined distance greater than the distance required for disassembly and this to avoid disassembly of the rod.
    - 5 According to another alternative embodiment, the locking means comprise at least first hooks arranged in the vicinity of the insertion means.
    According to another alternative embodiment, the blocking means comprise at least second hooks arranged at the second portion.
    These hooks limit the deformation of the rod when the airbag module is ignited.
    According to another alternative embodiment, the mounting device comprises two second hooks located between the two guide pads.
    A second aspect of the invention relates to a tool for removing the device for mounting an airbag module according to the first aspect of the invention and characterized in that the removal tool comprises a prevention handle in the axis of which is mounted, one end of a rod, the free end of the rod comprises a notch whose internal dimensions correspond substantially to the external dimensions of the section of the second portion of the elastic ring so that when the notch is engaged on the second portion, the rod is oriented in the direction away from the axis of rotation of the flywheel (2).
    A third aspect of the invention relates to a steering wheel assembly comprising the airbag module of the mounting device according to the first aspect of the invention and a disassembly tool according to the second aspect of the invention.
    Other characteristics and advantages of the present invention will appear more clearly on reading the detailed description which follows of an embodiment of the invention given by way of nonlimiting example and illustrated by the appended drawings, wherein :
    - 6 Figure 1 shows a first exploded view of a steering wheel equipped with the removable mounting device of an airbag module;
    Figure 2 shows a bottom view of the removable mounting device of an airbag module in the locked position;
    Figure 3 shows a bottom view of the removable mounting device of an airbag module in the unlocked position;
    Figure 4 shows a view of a tool for removing the removable mounting device of an airbag module on a steering wheel according to the invention;
    Figure 5 shows a detail view of the disassembly tool;
    The removable mounting device according to the invention will now be described with reference to Figures 1 to 3.
    Subsequently, the axis of rotation A of the steering wheel 2 will denote the axis around which the rotation of the steering wheel causes the orientation of the vehicle wheels by means of a mechanical, electrical and / or transmission mechanism (not shown). hydraulic.
    In a manner known per se, an airbag module 1 is mounted on the steering wheel 2 by means, for example, of a fixing plate 3. The fixing of the mounting plate 3 on the steering wheel 2 is carried out by means of screws 21. The airbag module 1 is mounted on the mounting plate 3 by clipping. To do this, the mounting plate comprises a plurality of openings or orifices 35 through which hooks 11 of the airbag module 1 are introduced. The module 1 is clipped onto the mounting plate 3 by an elastic ring 30 which interacts with the hooks 11 in an interaction zone at the level of the openings 35. According to the variant embodiment shown, the elastic ring 30 is mounted on the mounting plate 3, however, it is possible to envisage alternative embodiments in which the
    - 7 elastic ring 30 is mounted or secured to the frame 2 of the steering wheel and / or of the airbag module 1. Obviously, if the elastic ring 30 is mounted or secured to the airbag module 1, the hooks 11 are mounted or secured to the steering wheel 2.
    As shown in Figure 2, the elastic ring 30 comprises first portions 31 which extend through the openings 35 of the mounting plate 3. When the airbag module 1 is mounted on the mounting plate 3 , the first portions 31 of the elastic ring 30 are engaged in the hooks 11 of the airbag module 1 so that it is no longer possible to remove the hooks 11 without disengaging the first portions 31 of the elastic ring 30. This assembly ensures maintaining the airbag module 1 on the steering wheel 2 among other things during the deployment of the airbag.
    According to the invention, the elastic ring 30 comprises a second portion 32 located between the first portions 31 and guide means 33, 34 of the elastic ring 30. The guide means 33, 34 are defined to cause the displacement of first portions 31 outside the interaction zone of the hooks 11 when the second portion 32 is moved in a direction away from the axis of rotation A of the flywheel 2. In other words, when a user pulls on the second portion 32 of the elastic ring 30, in a direction substantially normal to the axis of rotation A, the tensile force displaces the second portion 32 of the elastic ring 30 on the mounting plate 3. This movement is guided by the means of guide 33, 34 to cause the displacement of the first portions 31 outside of an interaction zone with the hooks 11.
    The guide means 33, 34 comprise for each first portion 31 of the elastic ring 30, a pivot stud 33. Each pivot stud 33 is positioned in the immediate vicinity or preferably in contact with the elastic ring 30 between the first 31 and the second portion 32 and eccentrically with respect to the second portion 32. During
    - 8 of the displacement of the second portion 32 in the direction of traction, the elastic rod movement 30 is constrained at the level of the pivot stud 33. The tensile force exerted on the second portion 32 associated with the elasticity of the rod 30 , then causes each first portion 31 to move out of the area of interaction with the hook 11.
    According to the embodiment shown, the elastic ring 30 is open, the first portions then forming the free ends of the elastic ring 30. The use of an open elastic ring 30 reduces the tensile force to be exerted on the second portion 32 to cause the displacement of the first portions 31. According to this variant, the displacement of each first portion 31 is mainly a rotation whose axis is located in the vicinity of the corresponding pivot stud 33.
    According to an alternative embodiment, the pivot studs 33 are positioned symmetrically with respect to a plane containing the axis A of rotation of the flywheel 2.
    Figure 3 shows the position of the first portions 31 at the end of traction of the second portion 32. In this position, the hooks 11 not shown are no longer engaged in the elastic ring 30 which allows to remove the cushion module inflatable 1 of the steering wheel 2.
    The guide means 33, 34 may comprise for each first end 31 a guide pad 34. According to one embodiment each guide pad 34 is positioned between the second portion 32 and the pivot pad 33 of the first end 31 corresponding. The guide pads 34 ensure the positioning of the elastic ring 30 on the plate during the tensile force to avoid extraction of the elastic ring from the mounting plate 3. They also make it possible to avoid rotation of the ring which could hinder simultaneous disengagement of the hooks 11.
    According to an alternative embodiment, the guide studs 34 are positioned symmetrically with respect to a plane containing the axis A of rotation of the flywheel 2.
    - 9 According to the alternative embodiment shown in the figures, the pivot pads 33 and / or the guide pads 34 are formed on the mounting plate 3, however according to other alternative embodiments the guide means can be formed on the frame 2 of the steering wheel and / or on the airbag module 1.
    According to another alternative embodiment, the guide means can take the form of one or more pins, grooves, grooves or ribs.
    The elastic ring 30 and / or the first and second portions of the elastic ring 30 are held on the mounting plate 3 by locking means 36, 37. These locking means 36, 37 ensuring the maintenance of the elastic ring in a plane substantially parallel to the mounting plate 3 while leaving it free to move in this plane. The locking means 37 are present to block the movement of the elastic rod 30 mainly when the module 1 is fired. airbag.
    According to the alternative embodiment shown, the blocking means 36, 37 take the form of an L-shaped hook from the mounting plate 3. First hooks 36 are arranged on either side of the openings 35. These first hooks ensure the correct positioning of the first portions 31 of the elastic ring 30 during the assembly operation of the airbag module. These first hooks 36 also guide the first portions 31 during unlocking. Second hooks 37 are placed at the level of the second portion 32 of the elastic ring 30. By way of example, the second hooks 37 are located between the guide pads 33, 34 and the second portion 32 of the elastic ring 30.
    According to another alternative embodiment, the locking means 36, 37 can come from the frame 2 of the steering wheel and / or on the airbag module 1.
    - Another aspect of the invention relates to a tool for removing the device for mounting the airbag module according to the invention. As explained above, the unlocking of the elastic ring 30 is carried out by exerting traction on the second portion 32 of the elastic ring 30. However, when the airbag module is mounted on the frame of the steering wheel, the elastic ring 30 is not accessible. The disassembly tool according to the invention can be introduced through a small opening made in the steering wheel, for example at the level of the mounting plate 3.
    Referring to Figures 4 and 5, the disassembly tool 4 comprises a grip handle 41, one end of which is extended in the direction of the longitudinal axis of the handle 41, by a rod 42. The free end of the rod 42, opposite the handle 41, comprises a notch 43. The shape of the notch 43 corresponds to the external shape of the second portion 32 of the elastic ring 30 so as to be able to engage on the second portion 32. The orientation of the notch 43 is substantially perpendicular to the rod 42. Thus, when the end of the rod is engaged on the second portion 32 of the elastic ring 30, the disassembly tool 4 is substantially perpendicular to the second portion 32 of the elastic ring 30.
    The disassembly / replacement operation of the airbag module takes place as follows: the user introduces the disassembly tool 4 through the opening in the steering wheel provided for this purpose until the notch 42 of the rod 41 engages on the second portion 32 of the elastic ring 30. The user then exerts traction on the disassembly tool 4 until the first portions 31 of the elastic ring 30 move out of the area of interaction with the hook 11 of the airbag module 1. The airbag module can then be removed.
    It will be understood that various modifications and / or improvements obvious to those skilled in the art can be made to the different embodiments of the invention described in the present
    - 11 description without departing from the scope of the invention defined by the appended claims.
    In particular, according to another alternative embodiment not shown, the mounting device does not include a mounting plate and the airbag module includes the hooks. According to this alternative embodiment, the steering wheel frame comprises insertion means for receiving the hooks of the airbag module. These insertion means can take the form of openings such as on the mounting plate or simple notches. The steering wheel also comprises means for blocking the elastic ring, for example of the type of those of the alternative embodiment of FIGS. 1-3. As with the variants described above, the elastic ring interacts with the hooks to hold the airbag module on the steering wheel.
    According to another alternative embodiment not shown, the mounting device does not include a mounting plate and the frame of the steering wheel includes hooks. According to this alternative embodiment, the airbag module comprises insertion means for receiving the flywheel hooks. These insertion means can take the form of openings as on the mounting plate or simple notches or one or more holes, openings, grooves or recesses. The airbag module also includes means for blocking the elastic band. As with the variants described above, the elastic ring interacts with the hooks to hold the airbag module on the steering wheel.
    权利要求:
    Claims (13)
    [1" id="c-fr-0001]
    1. Removable mounting device for an airbag module (1) on a steering wheel (2), the mounting device comprises at least two hooks (11) linked to one of the airbag module (1) or steering wheel (2), the hooks (11) cooperating with insertion means (35) located on the other side of the airbag module (1) or of the steering wheel (2) and an elastic ring (30) to form means holding the hooks (11) on the other side of the airbag module (1) or of the steering wheel (2) in areas of interaction with the hooks (11), the elastic ring (30) being held in position by locking means (36, 37) on the other of the airbag module (1) or of the steering wheel (2), the elastic ring (30) comprising:
    - first portions (31) extending in the areas of interaction to form the means for holding the hooks (11)
    - A second portion (32) located between the first portions (31) of the elastic ring (30), characterized in that the mounting device comprises guide means (33, 34) of the elastic ring (30) causing the displacement of the first portions (31) of the elastic band (30) outside the areas of interaction with the hooks (11) to release the hooks (11) on the other side of the airbag module (1) or of the steering wheel (2), when displacement of the second portion (32) in a direction away from the axis of rotation of the flywheel (2).
    [2" id="c-fr-0002]
    2. Removable mounting device for an airbag module on a steering wheel according to claim 1, characterized in that the hooks (11) are linked to the airbag module, the mounting device further comprising a mounting plate ( 3) designed to be mounted on the steering wheel frame (2),
    - 13 the mounting plate (3) comprising a plurality of openings (35) forming the insertion means, each opening (35) being adapted to receive a hook (11), the locking means (32, 36) of the elastic band (30) being formed on the mounting plate (3) or the steering wheel (2).
    [3" id="c-fr-0003]
    3. Removable mounting device for an airbag module on a steering wheel according to one of the preceding claims, characterized in that the guide means (33, 34) comprise, in the vicinity of the elastic ring (30), between the second portion (32) and each first portion (31) of the elastic ring (30),
    - A pivot stud (33) limiting the movement of the elastic ring (30) during the displacement of the second portion (32) to cause rotation of the first portions (31), outside the interaction zone with the hook (11 ) corresponding.
    [4" id="c-fr-0004]
    4. Removable mounting device for an airbag module on a steering wheel according to claim 3 characterized in that it comprises two studs (33) pivot symmetrical with respect to a plane containing the axis of rotation of the steering wheel (2 ).
    [5" id="c-fr-0005]
    5. A device for detachably mounting an airbag module on a steering wheel according to claim 3 or 4, characterized in that the guide means comprise, in the vicinity of the elastic ring between the second portion (32) and the pivot stud ( 33), a guide stud (34) of the elastic ring (30).
    [6" id="c-fr-0006]
    6. Removable mounting device for an airbag module on a steering wheel according to one of the preceding claims, characterized in that the elastic ring (30) is open, the first portions (31) being located at the free ends of the ring elastic (30).
    [7" id="c-fr-0007]
    7. A device for removable mounting of an airbag module on a steering wheel according to one of the preceding claims, characterized in that the second portion (32) of the elastic ring is located substantially equidistant from the first portions (31) on the elastic ring (30).
    [8" id="c-fr-0008]
    8. Removable mounting device for an airbag module on a steering wheel according to one of the preceding claims, characterized in that the locking means (36, 37) prevent the movement of the elastic ring (30) in a substantially perpendicular direction to the plane containing the elastic ring (30).
    [9" id="c-fr-0009]
    9. Removable mounting device for an airbag module on a steering wheel according to one of the preceding claims, characterized in that the locking means comprise at least first hooks (36) disposed in the vicinity of the insertion means (35 ).
    [10" id="c-fr-0010]
    10. Removable mounting device for an airbag module on a steering wheel according to one of the preceding claims, characterized in that the locking means comprise at least one second hook (37) disposed at the level of the second portion (32) .
    [11" id="c-fr-0011]
    11. Removable mounting device for an airbag module on a steering wheel according to claims 5 and 10, characterized in that it comprises two second hooks (37) located between the two guide pads (34).
    [12" id="c-fr-0012]
    12. Removal tool (4) of the removable mounting device for an airbag module (1) on a steering wheel (2) according to one of the preceding claims, characterized in that the removal tool (4) comprises a handle (41) in the axis of which is mounted one end of a rod (42), the free end of the rod (42) comprises a notch (43) whose internal dimensions correspond substantially to the external dimensions of the section of the second portion (32) of the elastic ring (30) so that when the notch (43) is engaged on the second portion (32), the rod (42) is oriented in the direction away from the 'axis of rotation of the steering wheel (2).
    [13" id="c-fr-0013]
    13. Steering wheel assembly (2) comprising the airbag module (1) of the removable mounting device according to claims 1 to 11 and a disassembly tool (4) according to claim 12
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    FR3085909B1|2018-09-13|2021-05-28|Autoliv Dev|VEHICLE STEERING WHEEL INCLUDING A HORN CONTROL DEVICE|
    US10926698B2|2018-12-17|2021-02-23|Key Safety Systems, Inc.|Integrated steering wheel, vibration absorber, and driver airbag|US10986950B2|2018-11-27|2021-04-27|The Adt Security Corporation|Securing, analyzing, and transmitting notification and delivery of mail, mail receipt, and mailbox tampering|
    FR3112110A1|2020-07-03|2022-01-07|Autoliv Development Ab|Vehicle steering wheel fitted with a safety module|
    FR3112733A1|2020-07-21|2022-01-28|Autoliv Development Ab|STEERING WHEEL WITH AIR CUSHION MODULE REMOVABLE FROM THE REAR|
    法律状态:
    2019-06-27| PLFP| Fee payment|Year of fee payment: 2 |
    2020-01-03| PLSC| Publication of the preliminary search report|Effective date: 20200103 |
    2020-06-29| PLFP| Fee payment|Year of fee payment: 3 |
    2021-06-28| PLFP| Fee payment|Year of fee payment: 4 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1855985A|FR3083189B1|2018-06-29|2018-06-29|REMOVABLE MOUNTING DEVICE FOR AN INFLATABLE CUSHION MODULE|
    FR1855985|2018-06-29|FR1855985A| FR3083189B1|2018-06-29|2018-06-29|REMOVABLE MOUNTING DEVICE FOR AN INFLATABLE CUSHION MODULE|
    JP2019111638A| JP6804167B2|2018-06-29|2019-06-15|Detachable mounting device for airbag module|
    DE102019116869.4A| DE102019116869A1|2018-06-29|2019-06-24|MECHANISM FOR INTERCHANGEABLE ATTACHMENT OF AN AIRBAG MODULE|
    US16/454,761| US11155229B2|2018-06-29|2019-06-27|Device for removably mounting an airbag module|
    CN201910573088.9A| CN110654341A|2018-06-29|2019-06-28|Detachable installation device of safety air bag module|
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