WO2024119719A1 - Steering wheel horn honking device, steering wheel, and vehicle - Google Patents

Steering wheel horn honking device, steering wheel, and vehicle Download PDF

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Publication number
WO2024119719A1
WO2024119719A1 PCT/CN2023/095330 CN2023095330W WO2024119719A1 WO 2024119719 A1 WO2024119719 A1 WO 2024119719A1 CN 2023095330 W CN2023095330 W CN 2023095330W WO 2024119719 A1 WO2024119719 A1 WO 2024119719A1
Authority
WO
WIPO (PCT)
Prior art keywords
steering wheel
horn
damping
hole
connecting member
Prior art date
Application number
PCT/CN2023/095330
Other languages
French (fr)
Inventor
Liang Zhang
Schuetz DOMINIK
Guido Hirzmann
Matthias Helmstetter
Marco Tumminello
Alexander Lammers
Original Assignee
Zf Automotive Technologies (shanghai) Co., Ltd.
ZF Automotive Safety Germany GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Zf Automotive Technologies (shanghai) Co., Ltd., ZF Automotive Safety Germany GmbH filed Critical Zf Automotive Technologies (shanghai) Co., Ltd.
Publication of WO2024119719A1 publication Critical patent/WO2024119719A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q5/00—Arrangement or adaptation of acoustic signal devices
    • B60Q5/001—Switches therefor
    • B60Q5/003—Switches therefor mounted on the steering wheel

Definitions

  • the present invention relates to the field of vehicle engineering, and in particular to a steering wheel horn honking device, a steering wheel and a vehicle.
  • a vibration damper is provided in the steering wheel to reduce the vibration, an airbag module in the steering wheel serves as an anti-vibration damping mass of the vibration damper.
  • the vibration damper is also configured to implement a steering wheel horn honking function.
  • An objective of the present invention is to provide a steering wheel horn honking device, a steering wheel and a vehicle, which simplify a complex structure.
  • the present invention provides a steering wheel horn honking device.
  • the steering wheel horn honking device comprises a steering wheel bracket, a damping portion and a mounting portion,
  • the damping portion protrudes from the steering wheel bracket, with a protruding direction and a parallel direction thereof being an axial direction, and comprises an elastic damping body in the axial direction that has a top portion and a bottom portion in the axial direction, the top portion being configured to face an airbag module, and the bottom portion being fixed to the steering wheel bracket;
  • the mounting portion comprises a damping connecting member and an airbag mounting member, the damping connecting member being sleeved on an outer side of the elastic damping body, axially supporting the airbag mounting member, and allowing the airbag mounting member to reciprocate axially,
  • the airbag mounting member and the steering wheel bracket comprise horn triggering portions axially spaced apart from each other, and the airbag mounting member moves axially to bring the axially spaced horn triggering portions into contact with each other or change the distance therebetween to trigger a horn.
  • the elastic damping body comprises a top portion and a bottom portion in the axial direction, and the steering wheel bracket axially supports the bottom portion of the elastic damping body;
  • the damping portion further comprises a fastener comprising a top portion and a bottom portion in the axial direction, the top portion of the fastener extending from the top portion of the elastic damping body, the top portion of the fastener comprising a shoulder that presses against the top portion of the elastic damping body, and the bottom portion of the fastener extending from the bottom portion of the elastic damping body and being fixed to the steering wheel bracket.
  • the bottom portion of the fastener extends from the steering wheel bracket in an inserted manner, with an extension being provided with a fastening structure that is connected to the steering wheel bracket to hold the shoulder of the fastener to press against the top portion of the elastic damping body.
  • the extension of the bottom portion of the fastener is provided with threads
  • the fastening structure comprises a nut and the threads, the nut being connected to the threads and abutting against the steering wheel bracket.
  • the airbag mounting member comprises a plurality of holes, and each of the holes is connected to sleeve on an outer side of the damping connecting member and is in a sliding fit with the damping connecting member.
  • At least one of the holes has a first fitting clearance with the damping connecting member, and at least one of the holes has a second fitting clearance with the damping connecting member, the first fitting clearance being greater than the second fitting clearance.
  • At least one of the holes is an oblong hole that has a third fitting clearance with the damping connecting member in a length direction and has a fourth fitting clearance with the damping connecting member in a width direction, the third fitting clearance being greater than the fourth fitting clearance.
  • the plurality of holes include a first hole, a second hole and a third hole,
  • the first hole has a fifth fitting clearance with the damping connecting member
  • the second hole has a sixth fitting clearance with the damping connecting member
  • the third hole is an oblong hole having a seventh fitting clearance with the damping connecting member in a length direction and having an eighth fitting clearance with the damping connecting member in a width direction,
  • the length direction of the third hole is parallel to a line connecting the second hole and the third hole, and the width direction of the third hole is perpendicular to the line connecting the second hole and the third hole.
  • the steering wheel bracket is provided with an electronic accommodating portion configured to accommodate an electrical device of a steering wheel, and the horn triggering portion of the steering wheel bracket is located on a surface of the electronic accommodating portion and is axially spaced apart from the horn triggering portion of the airbag mounting member.
  • the horn triggering portion comprises a distance sensor that detects an axial distance between the horn triggering portion of the airbag mounting member and the horn triggering portion of the steering wheel bracket so as to trigger the horn.
  • the present invention provides a steering wheel.
  • the steering wheel comprises an airbag module and the steering wheel horn honking device described above,
  • the airbag module is mounted to the airbag mounting member and comprises a bottom portion in the axial direction, the bottom portion of the airbag module facing the top portion of the damping portion.
  • the present invention provides a vehicle.
  • the vehicle comprises the steering wheel described above.
  • the horn triggering portions are fixed to the steering wheel bracket, so that the structure is simplified, and the assembly connection is omitted, thereby preventing the generation of vibration at connections so as to solve the problems such as abnormal noise and looseness.
  • FIG. 1 is an exploded view of a steering wheel horn honking device according to a first embodiment of the present application
  • FIG. 2 is a cross-sectional view of the steering wheel horn honking device in FIG. 1;
  • FIG. 3 is a front view of an airbag mounting member in FIG. 1;
  • FIG. 4 is a side view of a damping connecting member in FIG. 1;
  • FIG. 5 is a cross-sectional view of an elastic damping body in FIG. 2;
  • FIG. 6 is a cross-sectional view of an annular protrusion of a steering wheel bracket in FIG. 2;
  • FIG. 7 is a cross-sectional view of a fastener in FIG. 2;
  • FIG. 8 is a cross-sectional view of a damping connecting member in FIG. 2;
  • FIG. 9 is a cross-sectional view of holes of an airbag mounting member in FIG. 2;
  • FIG. 10 is a cross-sectional view of a steering wheel horn honking device according to a second embodiment of the present application.
  • FIG. 11 is a cross-sectional view of a steering wheel horn honking device according to a third embodiment of the present application.
  • FIG. 12 is a cross-sectional view of the steering wheel horn honking device according to the third embodiment of the present application.
  • a horn ring has a lower horn contact and is fixed to a lower locking member of a mounting member.
  • a steering wheel vibrates to generate vibration at the connection between the horn ring and the lower locking member, causing the problems such as abnormal noise and looseness.
  • FIG. 1 shows an exploded structure of a steering wheel horn honking device 00 according to the first embodiment of the present application.
  • the steering wheel horn honking device 00 comprises a steering wheel bracket 01.
  • the steering wheel bracket 01 is a pivot plate of a steering wheel frame, is located at a bottom portion of the steering wheel frame in an axial direction and at a central position of the steering wheel frame, and is connected to a steering column when in an assembled state of the steering wheel.
  • FIG. 2 shows a cross-sectional structure of regions of a damping portion 02 and a mounting portion 03 of the steering wheel horn honking device 00 in FIG. 1.
  • the steering wheel horn honking device 00 further comprises a damping portion 02.
  • the damping portion 02 protrudes from the steering wheel bracket 01 and thereby defines "axial direction" described above and below.
  • the axial direction is a protruding direction of the damping portion and a parallel direction thereof, shown in dotted line in the figure and marked as "S" .
  • the axial direction is perpendicular to the steering wheel bracket 01 and substantially parallel to the axis of the steering wheel.
  • the damping portion 02 has a top portion 21 and a bottom portion 22 in the axial direction.
  • the bottom portion 22 is fixed to the steering wheel bracket 01, and when in the assembled state of the steering wheel, the top portion 21 faces an airbag module that is located on an upper side of the top portion 21.
  • the damping portion 02 comprises an elastic damping body 23.
  • the elastic damping body 23 is arranged axially, the relevant content being described in detail as follows.
  • the elastic damping body 23 comprises, for example, a damping material such as rubber.
  • the steering wheel horn honking device 00 further comprises a mounting portion 03.
  • the mounting portion 03 comprises a damping connecting member 31 and an airbag mounting member 32.
  • the damping connecting member 31 is sleeved on an outer side of the elastic damping body 23, the relevant content being described in detail as follows.
  • the damping connecting member 31 axially supports the airbag mounting member 32, and allows the airbag mounting member 32 to reciprocate axially, the relevant content being described in detail as follows.
  • the airbag module is mounted to the airbag mounting member 32 and located on an upper side of the airbag mounting member 32.
  • the airbag mounting member 32 may be a part of the airbag module, or an independent component connected to the airbag module.
  • the steering column vibrates, and the vibration is transferred to the steering wheel bracket 01 connected thereto.
  • the airbag module is connected to the steering wheel bracket 01 by means of the mounting portion 03 and the damping portion 02, and the airbag module and the mounting portion 03 serve as an anti-vibration damping mass of the damping portion 02 to adjust the vibration characteristics of the entire steering wheel and reduce the vibration.
  • the airbag mounting member 32 and the steering wheel bracket 01 comprise horn triggering portions 04 axially spaced apart from each other.
  • Each horn triggering portion 04 is, for example, a horn contact, provided by a rivet.
  • the horn triggering portions 04 are a part of a horn trigger loop.
  • the horn triggering portions 04 are axially spaced apart from each other, and thus the horn trigger loop is normally disconnected and does not trigger the horn.
  • the airbag mounting member 32 axially approaches the steering wheel bracket 01, the axially spaced horn triggering portions 04 bring into contact with each other, and thus the horn trigger loop is connected to trigger the horn.
  • the horn triggering portions 04 are fixed to the steering wheel bracket 01, so that the need for a horn ring is eliminated, and the assembly connection between the horn ring and a lower locking member of a mounting member is omitted, thereby preventing the generation of vibration at the connection of the horn ring and the lower locking member of the mounting member so as to solve the problems such as abnormal noise and looseness.
  • FIG. 5 shows a cross-sectional structure of the elastic damping body 23 in FIG. 2.
  • the elastic damping body 23 comprises a top portion 231 and a bottom portion 232 in the axial direction.
  • the steering wheel bracket 01 axially supports the bottom portion 232 of the elastic damping body 23.
  • the steering wheel bracket 01 comprises an annular protrusion 11.
  • FIG. 6 shows a cross-sectional structure of the annular protrusion 11 of the steering wheel bracket 01 in FIG. 2. Further referring to FIG.
  • a core of the annular protrusion 11 is a central channel 112
  • a bottom surface of the bottom portion 232 of the elastic damping body 23 is connected to a top surface of the top portion 111 of the annular protrusion 11, and the annular protrusion 11 axially supports the elastic damping body 23.
  • the damping portion 02 further comprises a fastener 24, and the fastener 24 passes through a central channel 233 of a core of the elastic damping body 23.
  • FIG. 7 shows a cross-sectional structure of the fastening member 24 in FIG. 2, and a fastening structure 2421 described below is not shown. Further referring to FIG. 7, the fastening member 24 comprises a top portion 241 in the axial direction, and the top portion 241 of the fastening member 24 extends out of the top portion 231 of the elastic damping body 23.
  • the top portion 241 of the fastening member 24 comprises an annular protruding shoulder 2411, a bottom surface of the shoulder 2411 in the axial direction presses against a top surface of the top portion 231 of the elastic damping body 23, and the elastic damping body 23 is just uncompressed axially or slightly compressed.
  • the fastener 24 further comprises a bottom portion 242 in the axial direction, and the bottom portion 242 of the fastener 24 extends from the bottom portion 232 of the elastic damping body 23, extends into the central channel 112 of the annular protrusion 11, and is fixed to the steering wheel bracket 01 by means of the annular protrusion 11, the relevant content being described in detail as follows.
  • the bottom portion 242 of the fastener 24 extends from the steering wheel bracket 01 in an inserted manner.
  • the central channel 112 of the annular protrusion 11 is an unthreaded hole, and the bottom portion 242 of the fastener 24 is inserted into the central channel 112 of the annular protrusion 11, passes through the central channel 112, and extends from a bottom surface of a bottom portion 113 of the annular protrusion 11.
  • the extension of the bottom portion 242 of fastener 24 is provided with a fastening structure 2421, and the fastening structure 2421 is connected to the steering wheel bracket 01 to hold the shoulder 2411 of the fastener 24 to press against the top portion 231 of the elastic damping body 23.
  • the extension of the bottom portion 242 of the fastener 24 is provided with threads
  • the fastening structure 2421 comprises a nut 24211 and the threads mentioned above.
  • the nut 24211 is connected to the threads and abuts against the bottom surface of the bottom portion 113 of the annular protrusion 11, and the nut 24211 applies a downward pulling force on the bottom portion 242 of the fastener 24, so that the shoulder 2411 of the fastener 24 presses against the top portion 231 of the elastic damping body 23.
  • the fastening structure 2421 is a rivet head
  • the extension of the bottom portion 242 of the fastener 24 deforms under the action of an external force (such as knocking) to form a rivet head that abuts against the bottom surface of the bottom portion 113 of the annular protrusion 11 and applies a downward pulling force on the bottom portion 242 of the fastener 24 to press the shoulder 2411 of the fastener 24 against the top portion 231 of the elastic damping body 23.
  • the fastening structure 2421 is a welded structure
  • the extension of the bottom portion 242 of the fastener 24 is welded to the bottom portion 113 of the annular protrusion 11
  • the extension of the bottom portion 242 of the fastener 24 is connected to the bottom portion 113 of the annular protrusion 11 by means of the welded structure
  • the welded structure applies a downward pulling force on the bottom portion 242 of the fastener 24 to press the shoulder 2411 of the fastener 24 against the top portion 231 of the elastic damping body 23.
  • the fastener 24 is fixed to the steering wheel bracket 01 in a screw-in manner.
  • the fastener 24 is in rotational friction with the elastic damping body 23 during the screw-in process to allow the elastic damping body 23 to deform and thus have internal stress, so that the stiffness of the elastic damping body 23 increases, and the vibration damping performance deteriorates.
  • the fastener 24 is fixed to the steering wheel bracket 01 in an inserted manner, which avoids deformation of the elastic damping body 23 caused by the rotational friction, thereby preventing deterioration of the vibration damping performance.
  • an outer annular surface of the elastic damping body 23 comprises an annular recess 234, and the annular recess 234 is radially recessed from the outer annular surface and has a rectangular cross-section.
  • FIG. 8 shows a cross-sectional structure of the damping connector 31 in FIG. 2. Further referring to FIG. 8, the damping connector 31 is a sleeve with a core being a central channel 311.
  • An annular inner surface of the damping connector 31 comprises an annular protrusion 312, and the protrusion 312 radially protrudes from the annular inner surface and has a rectangular cross-section that is adapted to the groove 234 of the elastic damping body 23. Still referring to FIG.
  • the elastic damping body 23 is located in the central channel 311 of the damping connecting member 31, and the protrusion 312 of the damping connecting member 31 extends into the recess 234 of the elastic damping body 23 to sleeve the elastic damping body 23 on the damping connecting member 31.
  • the top portion 231 of the elastic damping body 23 is slightly higher than a top portion 313 of the damping connecting member 31 in the axial direction, so that a bottom surface of the shoulder 2411 of the top portion 241 of the fastener 24 is axially spaced apart from a top surface of the top portion 313 of the damping connecting member 31.
  • the bottom portion 232 of the elastic damping body 23 is higher than a bottom portion 314 of the damping connecting member 31 in the axial direction, so that the annular protrusion 11 extends into the damping connecting member 31, and an outer annular surface of the annular protrusion 11 is radially spaced apart from an inner surface of the damping connecting member 31.
  • the bottom portion 314 of the damping connecting member 31 is higher than a top surface of the steering wheel bracket 01 in the axial direction, and the bottom portion 314 of the damping connecting member 31 is axially spaced apart from the steering wheel bracket 01.
  • the airbag mounting member 32 is a horn honking plate, the airbag mounting member 32 comprises a hole 321, and the hole 321 is connected to sleeve on a radially outer side of the damping connecting member 31.
  • FIG. 9 shows a cross-sectional structure of the hole 321 of the airbag mounting member 32 in FIG. 2.
  • an inner annular surface of the hole 321 comprises an annular protrusion 322, the protrusion 322 radially protrudes from the inner annular surface and has a substantially rectangular cross-section. Still referring to FIG.
  • an inner annular surface of the protrusion 322 is radially spaced apart from an outer annular surface of the damping connecting member 31, so that the hole 321 forms a clearance fit with the damping connecting member 31 to allow the airbag mounting member 32 to axially slide in a reciprocating manner on the damping connecting member 31.
  • the mounting portion 03 is provided with a spring 33
  • the spring 33 is sleeved on a radially outer side of the damping connecting member 31 and located between the airbag mounting member 32 and the axial direction of the damping connecting member 31,
  • the bottom portion 314 of the damping connecting member 31 in the axial direction has a hook 3141, the hook 3141 radially protrudes outward from the bottom portion 314 and axially extends upward so as to provide a recess 3142
  • a bottom portion 332 of the spring 33 in the axial direction is located in the recess 3142 and is axially supported
  • a top portion 331 of the spring 33 in the axial direction extends into the hole 321 and axially supports a bottom surface of the protrusion 322 in the axial direction
  • the top portion 313 of the damping connecting member 31 comprises an annular protrusion 3131 radially protruding outward
  • the spring 33 supports the protrusion 322 so that a top surface thereof in the axial direction
  • the airbag mounting member 32 When in the assembled state of the steering wheel, when a driver presses the airbag module connected to the airbag mounting member 32 to trigger the horn, the airbag mounting member 32 overcomes a supporting force of the spring 33 and moves axially downward, and the horn triggering portion 04 on the airbag mounting member 32 moves axially downward and brings into contact with the horn triggering portion 04 of the steering wheel bracket 01, so that the horn trigger loop is connected to trigger the horn.
  • the spring 33 supports the airbag mounting member 32 to move axially upward, and the horn triggering portion 04 on the airbag mounting member 32 moves axially upward and away from the horn triggering portion 04 of the steering wheel bracket 01, so that the horn trigger loop is disconnected and does not trigger the horn, and the airbag mounting member 32 moves axially upward until the protrusion 322 of the airbag mounting member is blocked by the protrusion 3131 of the damping connecting member 31.
  • the airbag mounting member is axially supported by the steering wheel bracket, rather than being connected to the steering wheel bracket by means of a damping member, so that the vibration of the steering wheel bracket is directly transferred to the airbag mounting member without being damped by the damping member, and is then transferred to the airbag module that is connected to the airbag mounting member when in the assembled state of the steering wheel.
  • the driver often touches or even places his/her hand on the airbag module when driving the vehicle, and thus the vibration of the airbag module makes the driver feel uncomfortable when touching the airbag module.
  • the airbag mounting member 32 is axially supported by the damping connecting member 31 and is connected to the steering wheel bracket 01 by means of the elastic damping body 23, and the vibration of the steering wheel bracket 01 is damped by the elastic damping body 23 and then transferred to the airbag mounting member 32, so that the vibration of the airbag mounting member 32 is reduced, and then the vibration of the airbag module connected to the airbag mounting member 32 when in the assembled state of the steering wheel is reduced, thereby improving the comfort of the driver when touching the airbag module.
  • the airbag mounting member 32 and the airbag module which is connected to the airbag mounting member when in the assembled state of the steering wheel, serve as the anti-vibration damping mass, the larger the anti-vibration damping mass, the better the vibration damping effect.
  • damping portions 02 mentioned above and corresponding features thereof, that is, a plurality of damping portions 02, a plurality of damping connecting members 31 and a plurality of springs 33 are provided, the steering wheel bracket 01 has a plurality of corresponding annular protrusions 11, and the airbag mounting member 32 has a plurality of corresponding holes 321.
  • each hole 321 has a relatively large fitting clearance with each damping connecting member 31.
  • the connection between the hole 321 and the damping connecting member 31 is loose, causing the airbag mounting member 32 to shake relative to the damping connecting member 31.
  • each hole 321 has a relatively small fitting clearance with each damping connecting member 31.
  • FIG. 3 shows the plurality of holes 321 of the airbag mounting member 32
  • FIG. 4 shows the diameter of a damping connecting member 31.
  • the plurality of holes 321 include at least a first hole 3211, the first hole 3211 has a first fitting clearance with the damping connecting member 31, and the relatively large first fitting clearance allows the damping connecting member 31 to be not coaxial with the first hole 3211, so that it is easy for the damping connecting member 31 to be aligned with the first hole 3211 during assembly to facilitate assembly of the damping connecting member 31 and the airbag mounting member 32.
  • the plurality of holes 321 include at least a second hole 3212, each second hole 3212 has a second fitting clearance less than the first fitting clearance with the damping connecting member 31, and the relatively small second fitting clearance does not allow the assembled damping connecting member 31 to rotate in the second hole 3212 and of course does not allow the assembled damping connecting member 31 to shake in the second hole 3212, so that the assembled damping connecting member 31 cannot move relative to the second hole 3212, thereby ensuring the tightness of connection between the damping connecting member 31 and the airbag mounting member 32.
  • Providing at least a first hole 3211 and providing at least a second hole 3212 are not only convenient for assembly, but also ensure the tightness of connection.
  • the plurality of holes 321 comprise at least a third hole 3213, and the third hole 3213 is an oblong hole.
  • the third hole 3213 has a length direction (shown by x in the figure)
  • the third hole 3213 has a third fitting clearance with the damping connecting member 31 in the length direction
  • the relatively large third fitting clearance allows the assembled damping connecting member 31 to deviate from the third hole 3213 in the length direction, so that it is easy for the damping connecting member 31 to be aligned with the third hole 3213 in the length direction to facilitate assembly of the damping connecting member 31 and the airbag mounting member 32.
  • the third hole 3213 further has a width direction (shown by y in the figure) , the third hole 3213 has a fourth fitting clearance less than the third fitting clearance with the damping connecting member 31 in the width direction, and the relatively small fourth fitting clearance does not allow the assembled damping connecting member 31 to rotate in the third hole 3213 and of course does not allow the assembled damping connecting member 31 to shake in the third hole 3213, so that the assembled damping connecting member 31 cannot move relative to the third hole 3213, thereby ensuring the tightness of connection between the damping connecting member 31 and the airbag mounting member 32.
  • the third hole 3213 is not only convenient for assembly, but also ensures the tightness of connection, and the number of holes 321 is reduced, thereby simplifying the structure.
  • At least two holes 321 are provided, which is not only convenient for assembly, but also ensures the tightness of connection. However, there are more holes 321, so that the structure is not simple enough.
  • the plurality of holes 321 include the first hole 3211, the second hole 3212 and the third hole 3213 mentioned above.
  • the second hole 3212 and the third hole 3213 form a limit and do not allow the assembled damping connecting member 31 to rotate or shake, thereby achieving good reliability of connection after assembly and ensuring the tightness of mounting of the airbag mounting member 32.
  • the first hole 3211 and the third hole 3213 are both convenient for assembly, have high tolerance during assembly, and are convenient for mounting of the airbag mounting member 32.
  • the clearance fit between the plurality of holes 321 and the plurality of damping connecting members 31 is in another form.
  • the plurality of holes 321 only include one first hole 3211 and one second hole 3212, but only the second hole 3212 forms a limit, so that the reliability of connection is poor, and once the limit at the second hole 3212 fails due to factors such as wear during use, the airbag mounting member 32 and the damping connecting member 31 will be loosely connected and shake.
  • the length direction of the third hole 3213 is parallel to a line connecting the second hole 3212 and the third hole 3213, and the width direction of the third hole 3213 is perpendicular to a line connecting the second hole 3212 and the third hole 3213.
  • the third hole 3213 limits the rotation tendency by means of the two straight sides thereof parallel to the length direction blocking the damping connecting member 31, thereby further improving the limiting capacity, improving the reliability of connection, and ensuring the tightness of mounting of the airbag mounting member 32.
  • the third hole 3213 is formed in another direction.
  • the length direction of the third hole 3213 is perpendicular to the line connecting the second hole 3212 and the third hole 3213
  • the width direction of the third hole 3213 is parallel to the line connecting the second hole 3212 and the third hole 3213.
  • three damping connecting members 31 corresponding to the first hole 3211, the second hole 3212 and the third hole 3213 have the same diameter
  • the first fitting clearance between the first hole 3211 and the damping connecting member 31 is the same as the third fitting clearance between the third hole 3213 and the damping connecting member 31 in the length direction so that the diameter of the first hole 3211 is consistent with the size of the third hole 3213 in the length direction
  • the second fitting clearance between the second hole 3212 and the damping connecting member 31 is the same as the fourth fitting clearance between the third hole 3213 and the damping connecting member 31 in the width direction so that the diameter of the second hole 3212 is consistent with the size of the third hole 3213 in the width direction.
  • the three damping connecting members 31 have different diameters, and correspondingly, the first hole 3211, the second hole 3212 and the third hole 3213 are sized otherwise.
  • the first hole 3211, the second hole 3212 and the third hole 3213 in the airbag mounting member 32 are distributed roughly at three corners of an equilateral triangle, achieving good structural balance, uniform stress and good stability.
  • a steering wheel (not shown in the figures) comprises the steering wheel horn honking device 00 described above, and the steering wheel further comprises an airbag module (not shown in the figures) .
  • the airbag module is mounted to an airbag mounting member 32 of the steering wheel horn honking device 00.
  • the airbag mounting member 32 may be a part of the airbag module or an independent component connected to the airbag module, and a bottom portion of the airbag module in the axial direction faces the top portion of the damping portion 02.
  • a vehicle (not shown in the figures) comprises the steering wheel (not shown in the figures) described above.
  • FIG. 10 shows a cross-sectional structure of regions of a damping portion 02 and a mounting portion 03 of the steering wheel horn honking device 00 according to the second embodiment.
  • the main difference between the steering wheel horn honking device 00 according to the second embodiment and the steering wheel horn honking device 00 according to the first embodiment lies in the mounting of the horn triggering portions 04.
  • the reference numerals of element and some contents in the previous embodiment are also used in the later embodiments herein, the same reference numerals are used to represent the same or similar elements, and the description of the same technical contents is selectively omitted. For the description of the omitted part, reference may be made to the previous embodiment, and the content will not be repeated in the later embodiments.
  • the steering wheel bracket 01 is provided with an electronic accommodating portion 05.
  • the electronic accommodating portion 05 can accommodate electronic components, such as an electronic control unit (ECU) and a lighting module, which need to be arranged in the steering wheel.
  • the electronic accommodating portion 05 may be fixed to a surface of the steering wheel bracket 01 facing the airbag mounting member 32, and is axially located between the steering wheel bracket 01 and the airbag mounting member 32.
  • the electronic accommodating portion 05 may be provided with an avoidance structure 51, such as a hole and a groove, at a corresponding position to avoid other structures such as the annular protrusion 11.
  • the horn triggering portion 04 of the steering wheel bracket 01 may be located on a surface of the electronic accommodating portion 05, and is axially spaced apart from the horn triggering portion 04 on the airbag mounting member 32.
  • the electronic accommodating portion 05 may be provided with a protrusion 52 on a surface facing the airbag mounting member 32, the protrusion 52 may axially protrude toward the airbag mounting member 32, and a horn triggering portion 04 is mounted on a top portion of the protrusion 52.
  • Each horn triggering portion 04 is, for example, a horn contact, provided by a rivet.
  • the horn triggering portions 04 are a part of a horn trigger loop, and other parts of the horn trigger loop may be accommodated in the electronic accommodating portion 05.
  • the horn triggering portions 04 are axially spaced apart from each other, and thus the horn trigger loop is normally disconnected and does not trigger the horn.
  • the airbag mounting member 32 axially approaches the steering wheel bracket 01 and of course approaches the protrusion 52 of the electronic accommodating portion 05, the axially spaced horn triggering portions 04 come into contact with each other, and thus the horn trigger loop is connected to trigger the horn.
  • FIGS. 11 and 12 show a cross-sectional structure of regions of a damping portion 02 and a mounting portion 03 of the steering wheel horn honking device 00 according to the third embodiment.
  • the main difference between the steering wheel horn honking device 00 according to the third embodiment and the steering wheel horn honking device 00 according to the first embodiment lies in the triggering manner of the horn triggering portions 04.
  • the reference numerals of element and some contents in the previous embodiment are also used in the later embodiments herein, the same reference numerals are used to represent the same or similar elements, and the description of the same technical contents is selectively omitted. For the description of the omitted part, reference may be made to the previous embodiment, and the content will not be repeated in the later embodiments.
  • a controller may control the triggering of the horn based on the distance between the two horn triggering portions 04 axially spaced apart from each other.
  • the distance between the horn triggering portion 04 of the airbag mounting member 32 and the horn triggering portion 04 of the steering wheel bracket 01 is a constant value, and then the controller does not trigger the horn.
  • the controller does not trigger the horn.
  • the distance between the horn triggering portion 04 of the airbag mounting member 32 and the horn triggering portion 04 of the steering wheel bracket 01 changes, and then the controller triggers the horn.
  • Such a change may be, for example, the distance becoming smaller, and the corresponding airbag mounting member 32 is pressed to approach the steering wheel bracket 01, so that the controller triggers the horn.
  • Such a change may also be, as another example, the distance becoming larger, and the corresponding airbag mounting member 32 is bounced away from the steering wheel bracket 01 by means of the spring 33, so that the controller triggers the horn.
  • Such a change may be, as still another example, the distance becoming 0, and the horn triggering portion 04 of the corresponding airbag mounting member 32 comes into contact with the horn triggering portion 04 of the steering wheel bracket 01, so that the controller triggers the horn.
  • Such a change may be, as a further example, exceeding a threshold, and the distance between the horn triggering portion 04 of the corresponding airbag mounting member 32 and the horn triggering portion 04 of the steering wheel bracket 01 exceeds (for example, is greater than or less than) a preset threshold, so that the controller triggers the horn.
  • each horn triggering portion 04 may comprise a distance sensor that detects an axial distance between the horn triggering portion 04 of the airbag mounting member 32 and the horn triggering portion of the steering wheel bracket 01.
  • the controller (not shown in the figures) is connected to the distance sensor and triggers the horn based on the axial distance measured by the distance sensor.
  • the controller may be arranged inside the steering wheel or at other positions.
  • the distance sensor may comprise a start portion 41 and a target portion 42.
  • the horn triggering portion 04 of the airbag mounting member 32 comprises one of the start portion 41 and the target portion 42
  • the horn triggering portion 04 of the steering wheel bracket 01 comprises the other of the start portion 41 and the target portion 42.
  • the start portion 41 communicates with the target portion 42 for ranging to measure the axial distance between the two horn triggering portions 04.
  • the start portion 41 may be a position encoder
  • the target portion 42 may be a reflector
  • the start portion 41 sends a ranging signal, which is reflected by the target portion 42 and returns to the start portion 41, thereby achieving ranging.
  • the horn triggering portion 04 of the steering wheel bracket 01 comprises the start portion 41
  • the horn triggering portion 04 of the airbag mounting member 32 comprises the target portion 42.
  • the horn triggering portion 04 of the airbag mounting member 32 comprises the start portion 41
  • the horn triggering portion 04 of the steering wheel bracket 01 comprises the target portion 42.

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  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Air Bags (AREA)

Abstract

The steering wheel horn honking device (00) comprises a steering wheel bracket (01), a damping portion (02) and a mounting portion (03), wherein the damping portion (02) protrudes from the steering wheel bracket (01), with a protruding direction and a parallel direction thereof being an axial direction, and the damping portion (02) comprises an elastic damping body (23) in the axial direction that has a top portion and a bottom portion in the axial direction, the top portion being configured to face an airbag module, and the bottom portion being fixed to the steering wheel bracket; and the mounting portion (03) comprises a damping connecting member (31) and an airbag mounting member (32), the damping connecting member (31) being sleeved on an outer side of the elastic damping body (23), axially supporting the airbag mounting member (32), and allowing the airbag mounting member (32) to reciprocate axially, wherein the airbag mounting member (32) and the steering wheel bracket (01) comprise horn triggering portions (04) axially spaced apart from each other, and the airbag mounting member (32) can move axially to bring the axially spaced horn triggering portions (04) into contact with each other or change the distance therebetween to trigger a horn.

Description

STEERING WHEEL HORN HONKING DEVICE, STEERING WHEEL, AND VEHICLE Technical Field
The present invention relates to the field of vehicle engineering, and in particular to a steering wheel horn honking device, a steering wheel and a vehicle.
Background Art
When a vehicle is in operation, the vibration of a steering wheel makes a driver feel uncomfortable. A vibration damper is provided in the steering wheel to reduce the vibration, an airbag module in the steering wheel serves as an anti-vibration damping mass of the vibration damper. In this scenario, the vibration damper is also configured to implement a steering wheel horn honking function. However, there are problems such as large number of components, many fitting positions, complex structure, and being easy to produce abnormal noise.
Summary of the Invention
An objective of the present invention is to provide a steering wheel horn honking device, a steering wheel and a vehicle, which simplify a complex structure.
In a first aspect, the present invention provides a steering wheel horn honking device. According to an embodiment of the present invention, the steering wheel horn honking device comprises a steering wheel bracket, a damping portion and a mounting portion,
wherein the damping portion protrudes from the steering wheel bracket, with a protruding direction and a parallel direction thereof being an axial direction, and comprises an elastic damping body in the axial direction that has a top portion and a bottom portion in the axial direction, the top portion being configured to face an airbag module, and the bottom portion being fixed to the steering wheel bracket; and 
the mounting portion comprises a damping connecting member and an airbag mounting member, the damping connecting member being sleeved on an outer side of the elastic damping body, axially supporting the airbag mounting member, and allowing the airbag mounting member to reciprocate axially,
wherein the airbag mounting member and the steering wheel bracket comprise horn triggering portions axially spaced apart from each other, and the airbag  mounting member moves axially to bring the axially spaced horn triggering portions into contact with each other or change the distance therebetween to trigger a horn.
In one or more embodiments, the elastic damping body comprises a top portion and a bottom portion in the axial direction, and the steering wheel bracket axially supports the bottom portion of the elastic damping body; and
the damping portion further comprises a fastener comprising a top portion and a bottom portion in the axial direction, the top portion of the fastener extending from the top portion of the elastic damping body, the top portion of the fastener comprising a shoulder that presses against the top portion of the elastic damping body, and the bottom portion of the fastener extending from the bottom portion of the elastic damping body and being fixed to the steering wheel bracket.
In one or more embodiments, the bottom portion of the fastener extends from the steering wheel bracket in an inserted manner, with an extension being provided with a fastening structure that is connected to the steering wheel bracket to hold the shoulder of the fastener to press against the top portion of the elastic damping body.
In one or more embodiments, the extension of the bottom portion of the fastener is provided with threads, and the fastening structure comprises a nut and the threads, the nut being connected to the threads and abutting against the steering wheel bracket.
In one or more embodiments, the airbag mounting member comprises a plurality of holes, and each of the holes is connected to sleeve on an outer side of the damping connecting member and is in a sliding fit with the damping connecting member.
In one or more embodiments, at least one of the holes has a first fitting clearance with the damping connecting member, and at least one of the holes has a second fitting clearance with the damping connecting member, the first fitting clearance being greater than the second fitting clearance.
In one or more embodiments, at least one of the holes is an oblong hole that has a third fitting clearance with the damping connecting member in a length direction and has a fourth fitting clearance with the damping connecting member in a width direction, the third fitting clearance being greater than the fourth fitting clearance.
In one or more embodiments, the plurality of holes include a first hole, a second hole and a third hole,
the first hole has a fifth fitting clearance with the damping connecting member;
the second hole has a sixth fitting clearance with the damping connecting member; and
the third hole is an oblong hole having a seventh fitting clearance with the damping connecting member in a length direction and having an eighth fitting clearance with the damping connecting member in a width direction,
wherein the fifth fitting clearance is greater than the sixth fitting clearance, and the seventh fitting clearance is greater than the eighth fitting clearance.
In one or more embodiments, the length direction of the third hole is parallel to a line connecting the second hole and the third hole, and the width direction of the third hole is perpendicular to the line connecting the second hole and the third hole.
In one or more embodiments, the steering wheel bracket is provided with an electronic accommodating portion configured to accommodate an electrical device of a steering wheel, and the horn triggering portion of the steering wheel bracket is located on a surface of the electronic accommodating portion and is axially spaced apart from the horn triggering portion of the airbag mounting member.
In one or more embodiments, the horn triggering portion comprises a distance sensor that detects an axial distance between the horn triggering portion of the airbag mounting member and the horn triggering portion of the steering wheel bracket so as to trigger the horn.
In a second aspect, the present invention provides a steering wheel. According to an embodiment of the present invention, the steering wheel comprises an airbag module and the steering wheel horn honking device described above,
wherein the airbag module is mounted to the airbag mounting member and comprises a bottom portion in the axial direction, the bottom portion of the airbag module facing the top portion of the damping portion.
In a third aspect, the present invention provides a vehicle. According to an embodiment of the present invention, the vehicle comprises the steering wheel described above.
The embodiments of the present invention have at least the following advantageous effect:
the horn triggering portions are fixed to the steering wheel bracket, so that the structure is simplified, and the assembly connection is omitted, thereby preventing the generation of vibration at connections so as to solve the problems such as abnormal noise and looseness.
Brief Description of the Drawings
The above and other features, properties and advantages of the present invention will become more apparent from the following description with reference to the accompanying drawings and the embodiments. In the figures:
FIG. 1 is an exploded view of a steering wheel horn honking device according to a first embodiment of the present application;
FIG. 2 is a cross-sectional view of the steering wheel horn honking device in FIG. 1;
FIG. 3 is a front view of an airbag mounting member in FIG. 1;
FIG. 4 is a side view of a damping connecting member in FIG. 1;
FIG. 5 is a cross-sectional view of an elastic damping body in FIG. 2;
FIG. 6 is a cross-sectional view of an annular protrusion of a steering wheel bracket in FIG. 2;
FIG. 7 is a cross-sectional view of a fastener in FIG. 2;
FIG. 8 is a cross-sectional view of a damping connecting member in FIG. 2;
FIG. 9 is a cross-sectional view of holes of an airbag mounting member in FIG. 2;
FIG. 10 is a cross-sectional view of a steering wheel horn honking device according to a second embodiment of the present application;
FIG. 11 is a cross-sectional view of a steering wheel horn honking device according to a third embodiment of the present application; and
FIG. 12 is a cross-sectional view of the steering wheel horn honking device according to the third embodiment of the present application.
List of reference numerals:
00 -Steering wheel horn honking device;
01 -Steering wheel bracket;
11 -Annular protrusion;
111 -Top portion of annular protrusion;
112 -Central channel of annular protrusion;
113 -Bottom portion of annular protrusion;
02 -Damping portion;
21 -Top portion of damping portion;
22 -Bottom portion of damping portion;
23 -Elastic damping body;
231 -Top portion of elastic damping body;
232 -Bottom portion of elastic damping body;
233 -Central channel of elastic damping body;
234 -Recess of elastic damping body;
24 -Fastener;
241 -Top portion of fastener;
2411 -Shoulder;
242 -Bottom portion of fastener;
2421 -Fastening structure;
24211 -Nut;
03 -Mounting portion;
31 -Damping connecting member;
311 -Central channel of damping connecting member;
312 -Protrusion of damping connecting member;
313 -Top portion of damping connecting member;
3131 -Protrusion of top portion of damping connecting member;
314 -Bottom portion of damping connecting member;
3141 -Hook at bottom portion of damping connecting member;
3142 -Recess of bottom portion of damping connecting member;
32 -Airbag mounting member;
321 -Hole of airbag mounting member;
3211 -First hole;
3212 -Second hole;
3213 -Third hole;
322 -Protrusion of airbag mounting member;
33 -Spring;
331 -Top portion of spring;
332 -Bottom portion of spring;
04 -Horn triggering portion;
41 -Start portion;
42 -Target portion;
05 -Electronic accommodating portion;
51 -Avoidance structure;
52 -Protrusion of the electronic accommodating portion.
Detailed Description of Embodiments
Reference will now be made in detail to the embodiments of the present invention, and one or more examples of which are illustrated in the accompanying drawings. Each example is provided to explain the present invention, but not to limit the present invention. In fact, it will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the scope or spirit of the present invention. For example, the features illustrated or described as part of an embodiment can be used with another embodiment to provide a further embodiment. Therefore, the present invention is intended to cover the modifications and variations that fall within the scope of the appended claims and their equivalents.
In an existing steering wheel horn honking device, a horn ring has a lower horn contact and is fixed to a lower locking member of a mounting member. When a vehicle is in operation, a steering wheel vibrates to generate vibration at the connection between the horn ring and the lower locking member, causing the problems such as abnormal noise and looseness.
First embodiment
The first embodiment of the present invention is described below with reference to FIGS. 1 to 9.
FIG. 1 shows an exploded structure of a steering wheel horn honking device 00 according to the first embodiment of the present application. As shown in FIG. 1, the steering wheel horn honking device 00 comprises a steering wheel bracket 01. In the illustrated embodiment, the steering wheel bracket 01 is a pivot plate of a steering wheel frame, is located at a bottom portion of the steering wheel frame in an axial direction and at a central position of the steering wheel frame, and is connected to a steering column when in an assembled state of the steering wheel.
FIG. 2 shows a cross-sectional structure of regions of a damping portion 02 and a mounting portion 03 of the steering wheel horn honking device 00 in FIG. 1. Further referring to FIG. 2, the steering wheel horn honking device 00 further comprises a damping portion 02. The damping portion 02 protrudes from the steering wheel bracket 01 and thereby defines "axial direction" described above and  below. The axial direction is a protruding direction of the damping portion and a parallel direction thereof, shown in dotted line in the figure and marked as "S" . In this embodiment, the axial direction is perpendicular to the steering wheel bracket 01 and substantially parallel to the axis of the steering wheel. The damping portion 02 has a top portion 21 and a bottom portion 22 in the axial direction. The bottom portion 22 is fixed to the steering wheel bracket 01, and when in the assembled state of the steering wheel, the top portion 21 faces an airbag module that is located on an upper side of the top portion 21. The damping portion 02 comprises an elastic damping body 23. The elastic damping body 23 is arranged axially, the relevant content being described in detail as follows. The elastic damping body 23 comprises, for example, a damping material such as rubber.
In the embodiment shown in FIG. 2, the steering wheel horn honking device 00 further comprises a mounting portion 03. The mounting portion 03 comprises a damping connecting member 31 and an airbag mounting member 32. The damping connecting member 31 is sleeved on an outer side of the elastic damping body 23, the relevant content being described in detail as follows. The damping connecting member 31 axially supports the airbag mounting member 32, and allows the airbag mounting member 32 to reciprocate axially, the relevant content being described in detail as follows. When in the assembled state of the steering wheel, the airbag module is mounted to the airbag mounting member 32 and located on an upper side of the airbag mounting member 32. The airbag mounting member 32 may be a part of the airbag module, or an independent component connected to the airbag module.
When a vehicle is in operation, the steering column vibrates, and the vibration is transferred to the steering wheel bracket 01 connected thereto. When in the assembled state of the steering wheel, the airbag module is connected to the steering wheel bracket 01 by means of the mounting portion 03 and the damping portion 02, and the airbag module and the mounting portion 03 serve as an anti-vibration damping mass of the damping portion 02 to adjust the vibration characteristics of the entire steering wheel and reduce the vibration.
In the embodiment shown in FIG. 2, the airbag mounting member 32 and the steering wheel bracket 01 comprise horn triggering portions 04 axially spaced apart from each other. Each horn triggering portion 04 is, for example, a horn contact, provided by a rivet. The horn triggering portions 04 are a part of a horn trigger loop. The horn triggering portions 04 are axially spaced apart from each other, and thus  the horn trigger loop is normally disconnected and does not trigger the horn. When the airbag mounting member 32 axially approaches the steering wheel bracket 01, the axially spaced horn triggering portions 04 bring into contact with each other, and thus the horn trigger loop is connected to trigger the horn.
In the embodiment shown in FIG. 2, the horn triggering portions 04 are fixed to the steering wheel bracket 01, so that the need for a horn ring is eliminated, and the assembly connection between the horn ring and a lower locking member of a mounting member is omitted, thereby preventing the generation of vibration at the connection of the horn ring and the lower locking member of the mounting member so as to solve the problems such as abnormal noise and looseness.
FIG. 5 shows a cross-sectional structure of the elastic damping body 23 in FIG. 2. Further referring to FIG. 5, the elastic damping body 23 comprises a top portion 231 and a bottom portion 232 in the axial direction. Still referring to FIG. 2, the steering wheel bracket 01 axially supports the bottom portion 232 of the elastic damping body 23. In the embodiment shown in FIG. 2, the steering wheel bracket 01 comprises an annular protrusion 11. FIG. 6 shows a cross-sectional structure of the annular protrusion 11 of the steering wheel bracket 01 in FIG. 2. Further referring to FIG. 6, a core of the annular protrusion 11 is a central channel 112, a bottom surface of the bottom portion 232 of the elastic damping body 23 is connected to a top surface of the top portion 111 of the annular protrusion 11, and the annular protrusion 11 axially supports the elastic damping body 23.
In the embodiment shown in FIG. 2, the damping portion 02 further comprises a fastener 24, and the fastener 24 passes through a central channel 233 of a core of the elastic damping body 23. FIG. 7 shows a cross-sectional structure of the fastening member 24 in FIG. 2, and a fastening structure 2421 described below is not shown. Further referring to FIG. 7, the fastening member 24 comprises a top portion 241 in the axial direction, and the top portion 241 of the fastening member 24 extends out of the top portion 231 of the elastic damping body 23. The top portion 241 of the fastening member 24 comprises an annular protruding shoulder 2411, a bottom surface of the shoulder 2411 in the axial direction presses against a top surface of the top portion 231 of the elastic damping body 23, and the elastic damping body 23 is just uncompressed axially or slightly compressed. The fastener 24 further comprises a bottom portion 242 in the axial direction, and the bottom portion 242 of the fastener 24 extends from the bottom portion 232 of the elastic  damping body 23, extends into the central channel 112 of the annular protrusion 11, and is fixed to the steering wheel bracket 01 by means of the annular protrusion 11, the relevant content being described in detail as follows.
Still referring to FIG. 2, the bottom portion 242 of the fastener 24 extends from the steering wheel bracket 01 in an inserted manner. In the illustrated embodiment, the central channel 112 of the annular protrusion 11 is an unthreaded hole, and the bottom portion 242 of the fastener 24 is inserted into the central channel 112 of the annular protrusion 11, passes through the central channel 112, and extends from a bottom surface of a bottom portion 113 of the annular protrusion 11. The extension of the bottom portion 242 of fastener 24 is provided with a fastening structure 2421, and the fastening structure 2421 is connected to the steering wheel bracket 01 to hold the shoulder 2411 of the fastener 24 to press against the top portion 231 of the elastic damping body 23. In the illustrated embodiment, the extension of the bottom portion 242 of the fastener 24 is provided with threads, and the fastening structure 2421 comprises a nut 24211 and the threads mentioned above. The nut 24211 is connected to the threads and abuts against the bottom surface of the bottom portion 113 of the annular protrusion 11, and the nut 24211 applies a downward pulling force on the bottom portion 242 of the fastener 24, so that the shoulder 2411 of the fastener 24 presses against the top portion 231 of the elastic damping body 23. In another embodiment, the fastening structure 2421 is a rivet head, the extension of the bottom portion 242 of the fastener 24 deforms under the action of an external force (such as knocking) to form a rivet head that abuts against the bottom surface of the bottom portion 113 of the annular protrusion 11 and applies a downward pulling force on the bottom portion 242 of the fastener 24 to press the shoulder 2411 of the fastener 24 against the top portion 231 of the elastic damping body 23. In still another embodiment, the fastening structure 2421 is a welded structure, the extension of the bottom portion 242 of the fastener 24 is welded to the bottom portion 113 of the annular protrusion 11, the extension of the bottom portion 242 of the fastener 24 is connected to the bottom portion 113 of the annular protrusion 11 by means of the welded structure, and the welded structure applies a downward pulling force on the bottom portion 242 of the fastener 24 to press the shoulder 2411 of the fastener 24 against the top portion 231 of the elastic damping body 23.
In another embodiment, the fastener 24 is fixed to the steering wheel bracket 01 in a screw-in manner. The fastener 24 is in rotational friction with the elastic  damping body 23 during the screw-in process to allow the elastic damping body 23 to deform and thus have internal stress, so that the stiffness of the elastic damping body 23 increases, and the vibration damping performance deteriorates. In the embodiment shown in FIG. 2, the fastener 24 is fixed to the steering wheel bracket 01 in an inserted manner, which avoids deformation of the elastic damping body 23 caused by the rotational friction, thereby preventing deterioration of the vibration damping performance.
Still referring to FIG. 5, an outer annular surface of the elastic damping body 23 comprises an annular recess 234, and the annular recess 234 is radially recessed from the outer annular surface and has a rectangular cross-section. FIG. 8 shows a cross-sectional structure of the damping connector 31 in FIG. 2. Further referring to FIG. 8, the damping connector 31 is a sleeve with a core being a central channel 311. An annular inner surface of the damping connector 31 comprises an annular protrusion 312, and the protrusion 312 radially protrudes from the annular inner surface and has a rectangular cross-section that is adapted to the groove 234 of the elastic damping body 23. Still referring to FIG. 2, the elastic damping body 23 is located in the central channel 311 of the damping connecting member 31, and the protrusion 312 of the damping connecting member 31 extends into the recess 234 of the elastic damping body 23 to sleeve the elastic damping body 23 on the damping connecting member 31. The top portion 231 of the elastic damping body 23 is slightly higher than a top portion 313 of the damping connecting member 31 in the axial direction, so that a bottom surface of the shoulder 2411 of the top portion 241 of the fastener 24 is axially spaced apart from a top surface of the top portion 313 of the damping connecting member 31. The bottom portion 232 of the elastic damping body 23 is higher than a bottom portion 314 of the damping connecting member 31 in the axial direction, so that the annular protrusion 11 extends into the damping connecting member 31, and an outer annular surface of the annular protrusion 11 is radially spaced apart from an inner surface of the damping connecting member 31. The bottom portion 314 of the damping connecting member 31 is higher than a top surface of the steering wheel bracket 01 in the axial direction, and the bottom portion 314 of the damping connecting member 31 is axially spaced apart from the steering wheel bracket 01.
Still referring to FIG. 2, the airbag mounting member 32 is a horn honking plate, the airbag mounting member 32 comprises a hole 321, and the hole 321 is connected  to sleeve on a radially outer side of the damping connecting member 31. FIG. 9 shows a cross-sectional structure of the hole 321 of the airbag mounting member 32 in FIG. 2. Further referring to FIG. 9, an inner annular surface of the hole 321 comprises an annular protrusion 322, the protrusion 322 radially protrudes from the inner annular surface and has a substantially rectangular cross-section. Still referring to FIG. 2, an inner annular surface of the protrusion 322 is radially spaced apart from an outer annular surface of the damping connecting member 31, so that the hole 321 forms a clearance fit with the damping connecting member 31 to allow the airbag mounting member 32 to axially slide in a reciprocating manner on the damping connecting member 31.
Still referring to FIG. 2, the mounting portion 03 is provided with a spring 33, the spring 33 is sleeved on a radially outer side of the damping connecting member 31 and located between the airbag mounting member 32 and the axial direction of the damping connecting member 31, the bottom portion 314 of the damping connecting member 31 in the axial direction has a hook 3141, the hook 3141 radially protrudes outward from the bottom portion 314 and axially extends upward so as to provide a recess 3142, a bottom portion 332 of the spring 33 in the axial direction is located in the recess 3142 and is axially supported, a top portion 331 of the spring 33 in the axial direction extends into the hole 321 and axially supports a bottom surface of the protrusion 322 in the axial direction, the top portion 313 of the damping connecting member 31 comprises an annular protrusion 3131 radially protruding outward, the spring 33 supports the protrusion 322 so that a top surface thereof in the axial direction abuts against a bottom surface of the protrusion 3131 in the axial direction, and the protrusion 3131 of the damping connecting member 31 restricts the upward movement of the airbag mounting member 32 and provides an upper stop point for the axially reciprocating movement of the airbag mounting member 32. When in the assembled state of the steering wheel, when a driver presses the airbag module connected to the airbag mounting member 32 to trigger the horn, the airbag mounting member 32 overcomes a supporting force of the spring 33 and moves axially downward, and the horn triggering portion 04 on the airbag mounting member 32 moves axially downward and brings into contact with the horn triggering portion 04 of the steering wheel bracket 01, so that the horn trigger loop is connected to trigger the horn. In the assembled state of the steering wheel, when the driver releases the airbag module connected to the airbag mounting member 32 to stop  triggering the horn, the spring 33 supports the airbag mounting member 32 to move axially upward, and the horn triggering portion 04 on the airbag mounting member 32 moves axially upward and away from the horn triggering portion 04 of the steering wheel bracket 01, so that the horn trigger loop is disconnected and does not trigger the horn, and the airbag mounting member 32 moves axially upward until the protrusion 322 of the airbag mounting member is blocked by the protrusion 3131 of the damping connecting member 31.
In another embodiment, the airbag mounting member is axially supported by the steering wheel bracket, rather than being connected to the steering wheel bracket by means of a damping member, so that the vibration of the steering wheel bracket is directly transferred to the airbag mounting member without being damped by the damping member, and is then transferred to the airbag module that is connected to the airbag mounting member when in the assembled state of the steering wheel. The driver often touches or even places his/her hand on the airbag module when driving the vehicle, and thus the vibration of the airbag module makes the driver feel uncomfortable when touching the airbag module. In the embodiment shown in FIG. 2, the airbag mounting member 32 is axially supported by the damping connecting member 31 and is connected to the steering wheel bracket 01 by means of the elastic damping body 23, and the vibration of the steering wheel bracket 01 is damped by the elastic damping body 23 and then transferred to the airbag mounting member 32, so that the vibration of the airbag mounting member 32 is reduced, and then the vibration of the airbag module connected to the airbag mounting member 32 when in the assembled state of the steering wheel is reduced, thereby improving the comfort of the driver when touching the airbag module. In addition, in the embodiment shown in FIG. 2, the airbag mounting member 32 and the airbag module, which is connected to the airbag mounting member when in the assembled state of the steering wheel, serve as the anti-vibration damping mass, the larger the anti-vibration damping mass, the better the vibration damping effect.
Further referring to FIG. 1, there are multiple damping portions 02 mentioned above and corresponding features thereof, that is, a plurality of damping portions 02, a plurality of damping connecting members 31 and a plurality of springs 33 are provided, the steering wheel bracket 01 has a plurality of corresponding annular protrusions 11, and the airbag mounting member 32 has a plurality of corresponding holes 321.
In an embodiment, the clearance fit between the plurality of holes 321 and the plurality of damping connecting members 31 is in another form. For example, each hole 321 has a relatively large fitting clearance with each damping connecting member 31. However, the connection between the hole 321 and the damping connecting member 31 is loose, causing the airbag mounting member 32 to shake relative to the damping connecting member 31. For another example, each hole 321 has a relatively small fitting clearance with each damping connecting member 31. However, it is difficult to assemble the airbag mounting member 32 and the damping connecting member 31, for example, the operation precision is not high during assembly, and the damping connecting member 31 is misaligned with the hole 321, causing blocking in assembly, and for another example, the manufacturing precision is insufficient, and the damping connecting member 31 and the hole 321 have a position error, such as being not coaxial, and are misaligned with each other during assembly, causing blocking in assembly. FIG. 3 shows the plurality of holes 321 of the airbag mounting member 32, and FIG. 4 shows the diameter of a damping connecting member 31. As shown in FIGS. 3 and 4, the plurality of holes 321 include at least a first hole 3211, the first hole 3211 has a first fitting clearance with the damping connecting member 31, and the relatively large first fitting clearance allows the damping connecting member 31 to be not coaxial with the first hole 3211, so that it is easy for the damping connecting member 31 to be aligned with the first hole 3211 during assembly to facilitate assembly of the damping connecting member 31 and the airbag mounting member 32. The plurality of holes 321 include at least a second hole 3212, each second hole 3212 has a second fitting clearance less than the first fitting clearance with the damping connecting member 31, and the relatively small second fitting clearance does not allow the assembled damping connecting member 31 to rotate in the second hole 3212 and of course does not allow the assembled damping connecting member 31 to shake in the second hole 3212, so that the assembled damping connecting member 31 cannot move relative to the second hole 3212, thereby ensuring the tightness of connection between the damping connecting member 31 and the airbag mounting member 32. Providing at least a first hole 3211 and providing at least a second hole 3212 are not only convenient for assembly, but also ensure the tightness of connection.
Still referring to FIGS. 3 and 4, the plurality of holes 321 comprise at least a third hole 3213, and the third hole 3213 is an oblong hole. The third hole 3213 has  a length direction (shown by x in the figure) , the third hole 3213 has a third fitting clearance with the damping connecting member 31 in the length direction, and the relatively large third fitting clearance allows the assembled damping connecting member 31 to deviate from the third hole 3213 in the length direction, so that it is easy for the damping connecting member 31 to be aligned with the third hole 3213 in the length direction to facilitate assembly of the damping connecting member 31 and the airbag mounting member 32. The third hole 3213 further has a width direction (shown by y in the figure) , the third hole 3213 has a fourth fitting clearance less than the third fitting clearance with the damping connecting member 31 in the width direction, and the relatively small fourth fitting clearance does not allow the assembled damping connecting member 31 to rotate in the third hole 3213 and of course does not allow the assembled damping connecting member 31 to shake in the third hole 3213, so that the assembled damping connecting member 31 cannot move relative to the third hole 3213, thereby ensuring the tightness of connection between the damping connecting member 31 and the airbag mounting member 32. The third hole 3213 is not only convenient for assembly, but also ensures the tightness of connection, and the number of holes 321 is reduced, thereby simplifying the structure. In another embodiment, at least two holes 321 (for example, the first hole 3211 and the second hole 3212 mentioned above) are provided, which is not only convenient for assembly, but also ensures the tightness of connection. However, there are more holes 321, so that the structure is not simple enough.
Still referring to FIGS. 3 and 4, the plurality of holes 321 include the first hole 3211, the second hole 3212 and the third hole 3213 mentioned above. The second hole 3212 and the third hole 3213 form a limit and do not allow the assembled damping connecting member 31 to rotate or shake, thereby achieving good reliability of connection after assembly and ensuring the tightness of mounting of the airbag mounting member 32. In addition, the first hole 3211 and the third hole 3213 are both convenient for assembly, have high tolerance during assembly, and are convenient for mounting of the airbag mounting member 32. In another embodiment, the clearance fit between the plurality of holes 321 and the plurality of damping connecting members 31 is in another form. For example, the plurality of holes 321 only include one first hole 3211 and one second hole 3212, but only the second hole 3212 forms a limit, so that the reliability of connection is poor, and once the limit at the second hole 3212 fails due to factors such as wear during use, the  airbag mounting member 32 and the damping connecting member 31 will be loosely connected and shake.
Still referring to FIG. 3, the length direction of the third hole 3213 is parallel to a line connecting the second hole 3212 and the third hole 3213, and the width direction of the third hole 3213 is perpendicular to a line connecting the second hole 3212 and the third hole 3213. When the airbag mounting member 32 tends to rotate around the second hole 3212, not only the second hole 3212 limits the rotation tendency by means of restricting the rotation relative to the damping connecting member 31, but also the third hole 3213 limits the rotation tendency by means of the two straight sides thereof parallel to the length direction blocking the damping connecting member 31, thereby further improving the limiting capacity, improving the reliability of connection, and ensuring the tightness of mounting of the airbag mounting member 32. In another embodiment, the third hole 3213 is formed in another direction. For example, the length direction of the third hole 3213 is perpendicular to the line connecting the second hole 3212 and the third hole 3213, and the width direction of the third hole 3213 is parallel to the line connecting the second hole 3212 and the third hole 3213. However, when the airbag mounting member 32 tends to rotate around the second hole 3212, only the second hole 3212 limits the rotation tendency by means of restricting the rotation relative to the damping connecting member 31, and the two straight sides of the third hole 3213 parallel to the length direction cannot block the damping connecting member 31 to limit the rotation tendency, so that the limiting capacity is relatively poor, and the reliability of connection is relatively poor.
In the embodiment shown in FIG. 3, three damping connecting members 31 corresponding to the first hole 3211, the second hole 3212 and the third hole 3213 have the same diameter, the first fitting clearance between the first hole 3211 and the damping connecting member 31 is the same as the third fitting clearance between the third hole 3213 and the damping connecting member 31 in the length direction so that the diameter of the first hole 3211 is consistent with the size of the third hole 3213 in the length direction, and the second fitting clearance between the second hole 3212 and the damping connecting member 31 is the same as the fourth fitting clearance between the third hole 3213 and the damping connecting member 31 in the width direction so that the diameter of the second hole 3212 is consistent with the size of the third hole 3213 in the width direction. In another embodiment, the  three damping connecting members 31 have different diameters, and correspondingly, the first hole 3211, the second hole 3212 and the third hole 3213 are sized otherwise.
In the embodiment shown in FIG. 3, the first hole 3211, the second hole 3212 and the third hole 3213 in the airbag mounting member 32 are distributed roughly at three corners of an equilateral triangle, achieving good structural balance, uniform stress and good stability.
A steering wheel (not shown in the figures) comprises the steering wheel horn honking device 00 described above, and the steering wheel further comprises an airbag module (not shown in the figures) . The airbag module is mounted to an airbag mounting member 32 of the steering wheel horn honking device 00. The airbag mounting member 32 may be a part of the airbag module or an independent component connected to the airbag module, and a bottom portion of the airbag module in the axial direction faces the top portion of the damping portion 02.
A vehicle (not shown in the figures) comprises the steering wheel (not shown in the figures) described above.
Second embodiment
The second embodiment of the present invention is described below with reference to FIG. 10.
FIG. 10 shows a cross-sectional structure of regions of a damping portion 02 and a mounting portion 03 of the steering wheel horn honking device 00 according to the second embodiment. The main difference between the steering wheel horn honking device 00 according to the second embodiment and the steering wheel horn honking device 00 according to the first embodiment lies in the mounting of the horn triggering portions 04. It should be noted that the reference numerals of element and some contents in the previous embodiment are also used in the later embodiments herein, the same reference numerals are used to represent the same or similar elements, and the description of the same technical contents is selectively omitted. For the description of the omitted part, reference may be made to the previous embodiment, and the content will not be repeated in the later embodiments.
As shown in FIG. 10, in the second embodiment, the steering wheel bracket 01 is provided with an electronic accommodating portion 05. The electronic accommodating portion 05 can accommodate electronic components, such as an electronic control unit (ECU) and a lighting module, which need to be arranged in  the steering wheel. The electronic accommodating portion 05 may be fixed to a surface of the steering wheel bracket 01 facing the airbag mounting member 32, and is axially located between the steering wheel bracket 01 and the airbag mounting member 32. The electronic accommodating portion 05 may be provided with an avoidance structure 51, such as a hole and a groove, at a corresponding position to avoid other structures such as the annular protrusion 11. The horn triggering portion 04 of the steering wheel bracket 01 may be located on a surface of the electronic accommodating portion 05, and is axially spaced apart from the horn triggering portion 04 on the airbag mounting member 32. The electronic accommodating portion 05 may be provided with a protrusion 52 on a surface facing the airbag mounting member 32, the protrusion 52 may axially protrude toward the airbag mounting member 32, and a horn triggering portion 04 is mounted on a top portion of the protrusion 52. Each horn triggering portion 04 is, for example, a horn contact, provided by a rivet. The horn triggering portions 04 are a part of a horn trigger loop, and other parts of the horn trigger loop may be accommodated in the electronic accommodating portion 05. The horn triggering portions 04 are axially spaced apart from each other, and thus the horn trigger loop is normally disconnected and does not trigger the horn. When the airbag mounting member 32 axially approaches the steering wheel bracket 01 and of course approaches the protrusion 52 of the electronic accommodating portion 05, the axially spaced horn triggering portions 04 come into contact with each other, and thus the horn trigger loop is connected to trigger the horn.
Third embodiment
The third embodiment of the present invention is described below with reference to FIGS. 11 and 12.
FIGS. 11 and 12 show a cross-sectional structure of regions of a damping portion 02 and a mounting portion 03 of the steering wheel horn honking device 00 according to the third embodiment. The main difference between the steering wheel horn honking device 00 according to the third embodiment and the steering wheel horn honking device 00 according to the first embodiment lies in the triggering manner of the horn triggering portions 04. It should be noted that the reference numerals of element and some contents in the previous embodiment are also used in the later embodiments herein, the same reference numerals are used to represent the same or similar elements, and the description of the same technical contents is  selectively omitted. For the description of the omitted part, reference may be made to the previous embodiment, and the content will not be repeated in the later embodiments.
As shown in FIGS. 11 and 12, in the third embodiment, a controller (not shown in the figures) may control the triggering of the horn based on the distance between the two horn triggering portions 04 axially spaced apart from each other. When the airbag mounting member 32 is not pressed by the driver, the distance between the horn triggering portion 04 of the airbag mounting member 32 and the horn triggering portion 04 of the steering wheel bracket 01 is a constant value, and then the controller does not trigger the horn. When the airbag mounting member 32 is pressed by the driver, the distance between the horn triggering portion 04 of the airbag mounting member 32 and the horn triggering portion 04 of the steering wheel bracket 01 changes, and then the controller triggers the horn. Such a change may be, for example, the distance becoming smaller, and the corresponding airbag mounting member 32 is pressed to approach the steering wheel bracket 01, so that the controller triggers the horn. Such a change may also be, as another example, the distance becoming larger, and the corresponding airbag mounting member 32 is bounced away from the steering wheel bracket 01 by means of the spring 33, so that the controller triggers the horn. Such a change may be, as still another example, the distance becoming 0, and the horn triggering portion 04 of the corresponding airbag mounting member 32 comes into contact with the horn triggering portion 04 of the steering wheel bracket 01, so that the controller triggers the horn. Such a change may be, as a further example, exceeding a threshold, and the distance between the horn triggering portion 04 of the corresponding airbag mounting member 32 and the horn triggering portion 04 of the steering wheel bracket 01 exceeds (for example, is greater than or less than) a preset threshold, so that the controller triggers the horn.
Still referring to FIGS. 11 and 12, each horn triggering portion 04 may comprise a distance sensor that detects an axial distance between the horn triggering portion 04 of the airbag mounting member 32 and the horn triggering portion of the steering wheel bracket 01. The controller (not shown in the figures) is connected to the distance sensor and triggers the horn based on the axial distance measured by the distance sensor. The controller may be arranged inside the steering wheel or at other positions. The distance sensor may comprise a start portion 41 and a target portion 42. The horn triggering portion 04 of the airbag mounting member 32 comprises one  of the start portion 41 and the target portion 42, and the horn triggering portion 04 of the steering wheel bracket 01 comprises the other of the start portion 41 and the target portion 42. The start portion 41 communicates with the target portion 42 for ranging to measure the axial distance between the two horn triggering portions 04. As an example, the start portion 41 may be a position encoder, the target portion 42 may be a reflector, and the start portion 41 sends a ranging signal, which is reflected by the target portion 42 and returns to the start portion 41, thereby achieving ranging. In the embodiment shown in FIG. 11, the horn triggering portion 04 of the steering wheel bracket 01 comprises the start portion 41, and the horn triggering portion 04 of the airbag mounting member 32 comprises the target portion 42. In the embodiment shown in FIG. 12, the horn triggering portion 04 of the airbag mounting member 32 comprises the start portion 41, and the horn triggering portion 04 of the steering wheel bracket 01 comprises the target portion 42.
It should be noted that these and other subsequent drawings are merely examples and not drawn to scale, and should not be construed as limiting the scope of protection actually claimed by the present invention.

Claims (13)

  1. A steering wheel horn honking device, characterized by
    comprising:
    a steering wheel bracket;
    a damping portion, which protrudes from the steering wheel bracket, with a protruding direction and a parallel direction thereof being an axial direction, and which comprises an elastic damping body in the axial direction that has a top portion and a bottom portion in the axial direction, the top portion being configured to face an airbag module, and the bottom portion being fixed to the steering wheel bracket; and
    a mounting portion comprising a damping connecting member and an airbag mounting member, the damping connecting member being sleeved on an outer side of the elastic damping body, axially supporting the airbag mounting member, and allowing the airbag mounting member to reciprocate axially,
    wherein the airbag mounting member and the steering wheel bracket comprise horn triggering portions axially spaced apart from each other, and the airbag mounting member moves axially to bring the axially spaced horn triggering portions into contact with each other or change the distance therebetween to trigger a horn.
  2. The steering wheel horn honking device according to claim 1, characterized in that
    the elastic damping body comprises a top portion and a bottom portion in the axial direction, and the steering wheel bracket axially supports the bottom portion of the elastic damping body; and
    the damping portion further comprises:
    a fastener comprising a top portion and a bottom portion in the axial direction, the top portion of the fastener extending from the top portion of the elastic damping body, the top portion of the fastener comprising a shoulder that presses against the top portion of the elastic damping body, and the bottom portion of the fastener extending from the bottom portion of the elastic damping body and being fixed to the steering wheel bracket.
  3. The steering wheel horn honking device according to claim 2, characterized in that
    the bottom portion of the fastener extends from the steering wheel bracket in an inserted manner, with an extension being provided with a fastening structure that is connected to the steering wheel bracket to hold the shoulder of the fastener to press against the top portion of the elastic damping body.
  4. The steering wheel horn honking device according to claim 3, characterized in that
    the extension of the bottom portion of the fastener is provided with threads, and the fastening structure comprises a nut and the threads, the nut being connected to the threads and abutting against the steering wheel bracket.
  5. The steering wheel horn honking device according to claim 1, characterized in that
    the airbag mounting member comprises a plurality of holes, and each of the holes is connected to sleeve on an outer side of the damping connecting member and is in a sliding fit with the damping connecting member.
  6. The steering wheel horn honking device according to claim 5, characterized in that
    at least one of the holes has a first fitting clearance with the damping connecting member, and at least one of the holes has a second fitting clearance with the damping connecting member, the first fitting clearance being greater than the second fitting clearance.
  7. The steering wheel horn honking device according to claim 5, characterized in that
    at least one of the holes is an oblong hole that has a third fitting clearance with the damping connecting member in a length direction and has a fourth fitting clearance with the damping connecting member in a width direction, the third fitting clearance being greater than the fourth fitting clearance.
  8. The steering wheel horn honking device according to claim 5, characterized in that
    the plurality of holes include:
    a first hole having a fifth fitting clearance with the damping connecting member;
    a second hole having a sixth fitting clearance with the damping connecting member; and
    a third hole which is an oblong hole having a seventh fitting clearance with the damping connecting member in a length direction and having an eighth fitting clearance with the damping connecting member in a width direction,
    wherein the fifth fitting clearance is greater than the sixth fitting clearance, and the seventh fitting clearance is greater than the eighth fitting clearance.
  9. The steering wheel horn honking device according to claim 8, characterized in that
    the length direction of the third hole is parallel to a line connecting the second hole and the third hole, and the width direction of the third hole is perpendicular to the line connecting the second hole and the third hole.
  10. The steering wheel horn honking device according to claim 1, characterized in that
    the steering wheel bracket is provided with an electronic accommodating portion configured to accommodate an electrical device of a steering wheel, and the horn triggering portion of the steering wheel bracket is located on a surface of the electronic accommodating portion and is axially spaced apart from the horn triggering portion of the airbag mounting member.
  11. The steering wheel horn honking device according to claim 1, characterized in that
    the horn triggering portion comprises a distance sensor that detects an axial distance between the horn triggering portion of the airbag mounting member and the horn triggering portion of the steering wheel bracket so as to trigger the horn.
  12. A steering wheel, characterized by comprising:
    a steering wheel horn honking device of any one of claims 1 to 11; and
    an airbag module mounted to the airbag mounting member and comprising a bottom portion in the axial direction, the bottom portion of the airbag module facing the top portion of the damping portion.
  13. A vehicle, characterized by comprising a steering wheel of claim 12.
PCT/CN2023/095330 2022-12-05 2023-05-19 Steering wheel horn honking device, steering wheel, and vehicle WO2024119719A1 (en)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20010030412A1 (en) * 2000-01-14 2001-10-18 Tadahiro Igawa Airbag apparatus
DE102008046195A1 (en) * 2008-09-06 2010-03-11 Autoliv Development Ab Airbag facility
US20130026741A1 (en) * 2011-07-27 2013-01-31 Takata Corporation Steering wheel
EP2614998A1 (en) * 2010-09-09 2013-07-17 Honda Motor Co., Ltd. Steering wheel structure with airbag module
US20190217800A1 (en) * 2016-12-15 2019-07-18 Trw Vehicle Safety Systems Inc. Coupling device for mounting an airbag module to be oscillating on a vehicle steering wheel
WO2019183167A1 (en) * 2018-03-23 2019-09-26 Trw Vehicle Safety Systems Inc. Coupling device for mounting an airbag module to be oscillating on a vehicle steering wheel

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20010030412A1 (en) * 2000-01-14 2001-10-18 Tadahiro Igawa Airbag apparatus
DE102008046195A1 (en) * 2008-09-06 2010-03-11 Autoliv Development Ab Airbag facility
EP2614998A1 (en) * 2010-09-09 2013-07-17 Honda Motor Co., Ltd. Steering wheel structure with airbag module
US20130026741A1 (en) * 2011-07-27 2013-01-31 Takata Corporation Steering wheel
US20190217800A1 (en) * 2016-12-15 2019-07-18 Trw Vehicle Safety Systems Inc. Coupling device for mounting an airbag module to be oscillating on a vehicle steering wheel
WO2019183167A1 (en) * 2018-03-23 2019-09-26 Trw Vehicle Safety Systems Inc. Coupling device for mounting an airbag module to be oscillating on a vehicle steering wheel

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