JP6406149B2 - Steering wheel - Google Patents

Description

  The present invention relates to a steering wheel that is rotated when a traveling direction or a reverse direction is changed in a vehicle such as a vehicle.

  One form of a steering wheel is provided with an airbag device for protecting a driver from an impact when a vehicle or other vehicle is impacted from the front (see, for example, Patent Document 1). As shown in FIG. 11, the steering wheel 50 includes a support member 51, a slider 52, a damper holder 53, and an elastic member 54. The support member 51 is supported by the metal core 57 of the steering wheel 50 while being inserted through the bag holder 56 of the airbag device 55. The slider 52 has a cylindrical shape and is arranged on the support member 51 so as to be slidable in the front-rear direction, which is a direction along the axis. The damper holder 53 has an annular shape and covers a part of the area in the axial direction of the slider 52. The elastic member 54 has an annular shape and is interposed between the slider 52 and the damper holder 53.

  In the steering wheel 50 having the above configuration, the airbag device 55 functions as a damper mass of the dynamic damper, and the elastic member 54 functions as a spring of the dynamic damper. Therefore, when the steering wheel 50 vibrates in the vertical direction or the left-right direction, the elastic member 54 is elastically deformed at a resonance frequency that is the same as or close to the frequency of the vibration, and vibrates with the airbag device 55. Absorb energy. By this absorption, vibration of the steering wheel 50 is suppressed (vibrated).

JP 2014-111426 A

  The elastic member 54 is also elastically deformed in the front-rear direction when elastically deformed in the up-down direction and the left-right direction. For example, the elastic member 54 tends to elastically deform so as to bulge forward or rearward when compressed in the vertical direction or the horizontal direction.

  However, in the steering wheel 50 described in Patent Document 1, the front end surface 54a of the elastic member 54 is in contact with a member located on the front side of the elastic member 54 (the bottom wall portion 53a of the damper holder 53). The bottom wall portion 53a tries to prevent elastic deformation of the elastic member 54 forward. Further, along with the contact, a frictional force is generated between the front end surface 54a and the bottom wall portion 53a, and the elastic member 54 is less likely to be elastically deformed forward.

  Further, the rear end surface 54 b of the elastic member 54 is in contact with a member (the enlarged diameter portion 52 a of the slider 52) located on the rear side of the elastic member 54, and the enlarged diameter portion 52 a is located behind the elastic member 54. It tries to prevent elastic deformation. Further, due to the contact, a frictional force is generated between the rear end surface 54b and the enlarged diameter portion 52a, and the elastic member 54 is less likely to be elastically deformed rearward.

As a result, the resonance frequency becomes high, and it is difficult to suppress the vibration of the target frequency of the steering wheel 50.
The present invention has been made in view of such circumstances, and an object thereof is to provide a steering wheel capable of improving the effect of suppressing vibration.

  A steering wheel that solves the above problems includes a support member that is inserted through a bag holder of an airbag device, a cylindrical slider that is slidable in the front-rear direction on the support member, and an axial region of the slider. An annular damper holder that covers a part, and an elastic member having an annular elastic main body interposed between the slider and the damper holder, the airbag device functioning as a damper mass of a dynamic damper, and the elastic A steering wheel configured to cause a main body portion to function as a spring of a dynamic damper, wherein the elastic member has at least one of a front end surface and a rear end surface of the elastic main body portion as a target surface. The target surface is opposed to the same target surface among the members positioned on the front side and the rear side of the elastic main body. They are arranged in a state of being spaced apart from that member.

  According to said structure, if a steering wheel vibrates, an airbag apparatus will function as a damper mass of a dynamic damper, and the elastic main-body part of an elastic member will function as a spring of a dynamic damper.

  On the other hand, in the elastic member, at least one of the entire front end surface and the entire rear end surface of the elastic main body is the target surface. The target surface is separated from the member facing the target surface among the member positioned on the front side and the member positioned on the rear side of the elastic main body. The space between the target surface of the elastic main body portion and the opposing member allows the elastic main body portion to elastically deform toward the side approaching the opposing member. The target surface is unlikely to contact the opposing member, and the frictional force associated with the contact is unlikely to occur. The elastic body portion is more easily elastically deformed toward the opposite member side than when the elastic main body portion is in contact with the opposite member.

  Therefore, the elastic main body vibrates with the airbag device while absorbing elastic vibration energy of the steering wheel while elastically deforming at a resonance frequency equal to or close to the target frequency of the steering wheel vibration. This absorption effectively suppresses vibration of the steering wheel.

  In the steering wheel, the elastic member separates the entire front end surface of the elastic main body portion rearward from a member located on the front side of the elastic main body portion, and the entire rear end surface of the elastic main body portion. It is preferable that the elastic main body portion is disposed in a state of being separated from the member located on the rear side of the elastic main body portion.

  According to said structure, the space | gap part between an elastic main-body part and the member located in the front side accept | permits the elastic deformation to the front of an elastic main-body part. The front end surface of the elastic main body portion is unlikely to contact a member located on the front side of the elastic main body portion, and a frictional force due to the contact is not easily generated. The elastic main body portion is easily elastically deformed forward as compared with a case where the elastic main body portion is in contact with a member located on the front side thereof.

  Moreover, the space | gap part between an elastic main-body part and the member located in the back side permits the elastic deformation to the back of an elastic main-body part. The rear end surface of the elastic main body part is unlikely to contact a member located on the rear side of the elastic main body part, and a frictional force due to the contact is hardly generated. The elastic main body portion is easily elastically deformed rearward as compared with a case where the elastic main body portion is in contact with a member located on the rear side.

As described above, the elastic main body is easily elastically deformed both forward and backward, and the effect of suppressing the vibration of the steering wheel is further improved.
In the steering wheel, the member positioned on the front side of the elastic main body portion is preferably an annular bottom wall portion forming a bottom portion of the damper holder.

  According to said structure, if a steering wheel vibrates, the space | gap part between an elastic main-body part and the bottom wall part of a damper holder will allow elastic deformation to the front of an elastic main-body part. The front end surface of the elastic main body portion is unlikely to contact the bottom wall portion of the damper holder, and the frictional force associated with the contact is unlikely to occur. The elastic main body portion is easily elastically deformed forward as compared with the case where the elastic main body portion is in contact with the bottom wall portion of the damper holder.

In the steering wheel, the member located on the rear side of the elastic main body part is preferably an annular flange formed on the outer periphery of the support member.
According to said structure, if a steering wheel vibrates, the space | gap part between an elastic main-body part and the collar part of a supporting member will allow the elastic deformation to the back of an elastic main-body part. The rear end surface of the elastic main body portion is unlikely to contact the collar portion of the support member, and a frictional force accompanying the contact is unlikely to occur. The elastic main body portion is easily elastically deformed rearward as compared with the case where the elastic main body portion is in contact with the flange portion of the support member.

  In the steering wheel, a biasing member that biases the slider rearward, and a cap member that covers at least each rear end of the support member and the slider in a state of being spaced rearward from the rear end of the slider; A movable contact portion mounted in the cap member, and the damper holder is mounted on the cap member. When the airbag device is pressed down, the cap member is moved forward along with the pressing down. Thus, the slider is slid forward against the urging member, and the horn device is operated by bringing the movable contact portion into contact with the rear end portion of the support member during the sliding process. It is preferable that

  According to said structure, when an airbag apparatus is not pushed down, the load of an airbag apparatus is transmitted to a slider mainly via a cap member, a damper holder, and an elastic main-body part. Therefore, when the steering wheel vibrates, the airbag device functions as a damper mass of the dynamic damper and the elastic main body functions as a spring of the dynamic damper in the same manner as described above, thereby effectively suppressing the vibration of the steering wheel. The

  On the other hand, when the airbag device is pushed down for the operation of the horn device, the cap member is moved forward along with the depression. The slider is slid forward against the biasing member. Further, when the movable contact portion moves forward together with the cap member and is brought into contact with the rear end portion of the support member, the horn device is activated.

  In the steering wheel, a transmission portion provided on an inner peripheral portion of a bottom wall portion of the damper holder, and an outer peripheral portion of the slider so as to be positioned immediately before the transmission portion, and the damper holder moves forward. It is preferable to further include a transmitted part transmitted through the transmitting part.

  According to said structure, when an airbag apparatus is pushed down for the action | operation of a horn apparatus, the force added to the airbag apparatus will be transmitted to a movable side contact part and a damper holder via a cap member. Due to the transmission of this force, the damper holder is moved forward together with the transmission part, and the movement of the transmission part is transmitted to the slider via the transmitted part. The slider is slid forward against the biasing member.

  According to the steering wheel, the elastic main body portion of the elastic member can be easily elastically deformed, and the effect of suppressing vibration can be improved.

It is a figure which shows one Embodiment embodied in the steering wheel for vehicles, (a) is a side view of a steering wheel, (b) is a front view which shows the positional relationship of the airbag apparatus in a steering wheel. The perspective view of the horn switch mechanism in the steering wheel of one Embodiment. The perspective view of the airbag apparatus in the steering wheel of one Embodiment. The fragmentary longitudinal cross-sectional view of the steering wheel of one Embodiment. The disassembled perspective view of the airbag apparatus in the steering wheel of one Embodiment. The disassembled perspective view which shows the component of the horn switch mechanism in the steering wheel of one Embodiment with a bag holder. In the steering wheel of one Embodiment, the horn switch mechanism and the fragmentary longitudinal cross-section which shows the cross-section of the peripheral part. Similarly, the partial longitudinal cross-sectional view which shows the cross-sectional structure in a cross section different from FIG. 7 about a horn switch mechanism and its peripheral part. The fragmentary longitudinal cross-section which expands and shows the Y section in FIG. The fragmentary longitudinal cross-section which shows the modification of a horn switch mechanism. The fragmentary longitudinal cross-section which shows the horn switch mechanism in the conventional steering wheel, and its peripheral part.

Hereinafter, an embodiment embodied in a steering wheel for a vehicle will be described with reference to FIGS.
As shown in FIG. 1 (a), a vehicle has a steering shaft (steering shaft) 14 that extends substantially in the longitudinal direction of the vehicle along the axis L1 and rotates about the coaxial line L1. It is arranged in an inclined state. A steering wheel 10 is attached to the rear end portion of the steering shaft 14.

  In this embodiment, when describing each part of the steering wheel 10, the axis L1 of the steering shaft 14 is used as a reference. The direction along the axis L1 is referred to as the “front-rear direction” of the steering wheel 10, and the direction in which the steering wheel 10 stands up among the directions along the plane perpendicular to the axis L1 is referred to as the “vertical direction”. Therefore, the front-rear direction and the vertical direction of the steering wheel 10 are slightly inclined with respect to the front-rear direction (horizontal direction) and the vertical direction (vertical direction) of the vehicle.

  2 to 9, for the sake of convenience, the front-rear direction of the steering wheel 10 matches the horizontal direction, and the vertical direction of the steering wheel 10 matches the vertical direction. The same applies to FIG. 10 showing the modification and FIG. 11 showing the prior art.

  As shown in FIG. 1B, the steering wheel 10 includes an airbag device (airbag module) 20 at the center. As shown in FIG. 4, the skeleton portion of the steering wheel 10 is constituted by a cored bar 12. The core metal 12 is formed of iron, aluminum, magnesium, or an alloy thereof. The cored bar 12 is attached to the steering shaft 14 at a boss portion 12 a located at the central portion thereof, and rotates integrally with the steering shaft 14.

  In the core metal 12, holding portions 12b each having a through hole 12c are provided at a plurality of locations around the boss portion 12a. The inner wall surface of each through-hole 12c has a tapered shape whose diameter increases toward the rear side.

  As shown in FIG. 7, the clip 13 is arrange | positioned at the front side of each holding | maintenance part 12b. The clip 13 is formed by bending a wire made of a metal such as a spring rope having conductivity into a predetermined shape, and a part of the clip 13 is in contact with the core metal 12. A part of each clip 13 is located near the front of the through hole 12c.

  The vehicle is provided with a horn device 40, and a plurality of horn switch mechanisms 30 (see FIGS. 2 and 5) for operating the horn device 40 are cored in a snap-fit structure at each holding portion 12b. 12 is attached. Each horn switch mechanism 30 has the same configuration. The airbag device 20 is supported by the cored bar 12 via these horn switch mechanisms 30. Thus, each horn switch mechanism 30 has both the function of supporting the airbag device 20 and the switch function of the horn device 40.

  Furthermore, in this embodiment, the elastic member 41 and the damper holder 42 are interposed between the bag holder 21 and each horn switch mechanism 30 in the airbag device 20. The core metal 12, the airbag device 20, the horn switch mechanism 30, the elastic member 41, the damper holder 42, and the like constitute a vibration suppression structure for suppressing, that is, suppressing vibration of the steering wheel 10. Next, each part which comprises the said damping structure is demonstrated.

<Airbag device 20>
As shown in FIGS. 3 to 5, the airbag device 20 is configured by assembling a pad portion 24, a ring retainer 25, an airbag (not shown) and an inflator 23 to the bag holder 21.

  The pad portion 24 includes an outer skin portion 24a whose surface (rear surface) forms a design surface, and a substantially square annular housing wall portion 24b standing on the back surface side (front side) of the outer skin portion 24a. A space surrounded by the outer skin portion 24a, the accommodating wall portion 24b, and the bag holder 21 mainly constitutes a bag accommodating space x for accommodating an airbag (not shown). A thin-walled portion 24c that is pushed and broken when the airbag is deployed and inflated is formed in a portion that forms the bag housing space x of the outer skin portion 24a.

  A plurality of locking claws 24d each having a rectangular plate shape are integrally formed at the front end portion of the accommodating wall portion 24b. A locking projection 24e is formed at the front end of each locking claw 24d and protrudes away from the bag housing space x.

  Switch support portions 24f for supporting the horn switch mechanism 30 are formed at a plurality of locations of the pad portion 24, respectively. Each switch support portion 24f is formed integrally with the housing wall portion 24b so as to extend from the outer skin portion 24a of the pad portion 24 to the back surface side (front side).

  As shown in FIGS. 3, 5, and 6, the bag holder 21 is formed by pressing a conductive metal plate. Instead, the bag holder 21 may be formed by performing die casting or the like using a conductive metal material. The peripheral part of the bag holder 21 is configured as a substantially square annular peripheral fixing part 21 a for fixing the pad part 24.

  In the periphery fixing portion 21a, slit-like claw locking holes 21b are formed at positions in front of the respective locking claws 24d, and the front end portions of the respective locking claws 24d are inserted into the slits. It has been stopped.

  An inner portion of the peripheral edge fixing portion 21a constitutes a pedestal portion 21c. A circular opening 21d is formed at the center of the pedestal 21c. Screw insertion holes 21e are formed at a plurality of locations in the vicinity of the peripheral edge of the opening 21d in the pedestal 21c. A part of the inflator 23 is attached to the pedestal 21c in a state where the inflator 23 is inserted through the opening 21d.

  More specifically, the inflator 23 has a low columnar main body 23a, and a flange portion 23b is formed on the outer peripheral surface of the main body 23a. A plurality of attachment pieces 23c are extended to the flange portion 23b outward in the radial direction of the main body 23a. In each attachment piece 23c, a screw insertion hole 23d is formed at a location in front of the screw insertion hole 21e of the bag holder 21. In the inflator 23, a portion on the rear side of the flange portion 23b is configured as a gas ejection portion 23e that ejects an expansion gas. And it is penetrated by the opening part 21d of the bag holder 21 from the front side so that the gas ejection part 23e of the inflator 23 may protrude to the bag accommodating space x side. Further, the flange portion 23b is brought into contact with the peripheral edge portion of the opening portion 21d. In this state, the inflator 23 is attached to the bag holder 21 together with the ring retainer 25.

  More specifically, the ring retainer 25 has a circular opening 25a equivalent to the opening 21d of the bag holder 21. Further, the ring retainer 25 has mounting screws 25b at a plurality of positions behind the screw insertion holes 21e of the bag holder 21. Between the ring retainer 25 and the bag holder 21, an opening portion of an airbag (not shown) that is folded so as to be deployed and inflated is disposed. The plurality of mounting screws 25b of the ring retainer 25 are connected to the screw insertion holes (not shown) provided in the peripheral portion of the opening of the airbag and the screw insertion holes 21e and 23d of the bag holder 21 and the inflator 23. It is inserted from the rear side. Further, the nut 26 is tightened from the front side to each of the mounting screws 25b after the insertion, whereby the airbag is fixed to the bag holder 21 via the ring retainer 25 and the inflator 23 is fixed to the bag holder 21.

  Attachment portions 21f for attaching the horn switch mechanism 30 are formed at a plurality of locations on the peripheral edge fixing portion 21a of the bag holder 21 so as to protrude outward in the radial direction of the circular opening 21d. Each attachment portion 21f is located at a location in front of the switch support portion 24f of the pad portion 24 described above. An attachment hole 21g is formed in each attachment portion 21f. A plurality of sandwiching portions 21 i extending rearward are integrally formed on the periphery of each attachment hole 21 g in the bag holder 21. In this embodiment, each clamping part 21i is formed by bending the location which opposes on both sides of each attachment hole 21g in the bag holder 21 back. As a result of the bending of each clamping part 21i, a hole 21j (see FIG. 7) is formed in the bag holder 21 on the outside of each clamping part 21i, that is, on the opposite side of the clamping part 21i from the mounting hole 21g. Yes.

<Horn switch mechanism 30>
As shown in FIGS. 2, 6 and 7, each horn switch mechanism 30 includes a snap pin 31 as a support member, a pin holder 32 as a slider, a contact holder 33 as a cap member, and a contact terminal as a movable contact portion. 34, a spring receiver 35, and a coil spring 36 as an urging member. Next, each component of the horn switch mechanism 30 will be described.

<Snap pin 31 (support member)>
The snap pin 31 is made of a conductive metal material. The support structure for the core metal 12 of the snap pin 31 will be described later. The main part of the snap pin 31 extends in the front-rear direction along the axis L2 parallel to the axis L1 of the steering shaft, and is a long shaft having a smaller diameter than the inner diameter of the mounting hole 21g of the bag holder 21. It is comprised by the part 31f. The snap pin 31 is inserted through the mounting hole 21g in the shaft portion 31f. The rear end portion of the shaft portion 31f functions as a fixed side contact portion. An annular locking groove 31b is formed on the rear side of the front end portion 31c in the shaft portion 31f. On the outer peripheral portion of the rear end of the shaft portion 31f, a flange portion 31a having a larger diameter than other portions of the coaxial portion 31f is formed. The outer diameter of the collar 31a is set larger than the inner diameter of the mounting hole 21g of the bag holder 21.

<Pin holder 32 (slider)>
As shown in FIGS. 7 to 9, the pin holder 32 is formed of an insulating resin material. The main part of the pin holder 32 is constituted by a cylindrical part 32a whose front and rear ends are open. The cylindrical portion 32 a is put on the outer side of the shaft portion 31 f of the snap pin 31. The pin holder 32 is used as a slider that slides in the front-rear direction along the shaft portion 31 f when the horn switch mechanism 30 is operated.

  An annular receiving portion 32c that protrudes radially outward of the cylindrical portion 32a is formed at an intermediate portion in the front-rear direction of the cylindrical portion 32a. The receiving portion 32 c has a function of receiving the rear end portion of the coil spring 36. Moreover, the receiving part 32c is the outer peripheral part of the cylindrical part 32a, Comprising: It forms in the location just before the transmission part 42e mentioned later. Furthermore, the outer diameter of the receiving portion 32c is simply set larger than the dimension necessary for receiving the rear end portion of the coil spring 36. Due to the setting regarding the formation position and the outer diameter of the receiving portion 32c, the receiving portion 32c also serves as a transmitted portion to which the forward movement of the damper holder 42 is transmitted through the transmitting portion 42e.

<Contact holder 33 (cap member)>
As shown in FIGS. 6 to 8, the contact holder 33 is formed of an insulating resin material. The contact holder 33 includes a top plate portion 33a having a substantially disc shape, and a substantially cylindrical peripheral wall portion 33b extending forward from the outer peripheral edge of the top plate portion 33a. The contact holder 33 covers at least the flange portion 31a of the snap pin 31 and at least the rear end portion of the cylindrical portion 32a of the pin holder 32 in a state of being spaced rearward from the rear end portion of the cylindrical portion 32a of the pin holder 32. Yes. Hook portions 33c are formed at a plurality of locations spaced apart from each other in the circumferential direction of the peripheral wall portion 33b so as to be elastically deformable in the radial direction.

  Claw engaging holes 33d (see FIGS. 6 and 8) are formed at a plurality of locations that are spaced apart from each other in the circumferential direction, which are intermediate portions in the front-rear direction of the peripheral wall portion 33b. In addition, arc-shaped notches 33e (see FIGS. 2 and 6) are formed at a plurality of locations which are front end portions of the peripheral wall portion 33b and are spaced apart from each other in the circumferential direction.

<Contact terminal 34 (movable side contact portion)>
The contact terminal 34 is formed by pressing a strip-shaped metal plate having conductivity. The contact terminal 34 includes a main body portion 34a extending in the radial direction of the contact holder 33 and a pair of side portions 34b extending forward from both ends of the main body portion 34a.

  A plurality of contact protrusions 34c protruding forward are formed at a plurality of locations in the length direction of the main body 34a. Most of the rear surface of the main body portion 34 a except the contact protrusion 34 c is in contact with the front surface of the top plate portion 33 a of the contact holder 33.

  Each side part 34b is in contact with the inner wall surface of the peripheral wall part 33b of the contact holder 33 in an engaged state. Due to this engagement, the contact terminal 34 is mounted in a state of being positioned on the contact holder 33.

<Spring support 35>
As shown in FIGS. 2 and 7, the spring receiver 35 is formed of a resin material having an insulating property. A part of the spring receiver 35 is constituted by a receiving portion 35b having an annular plate shape. The outer diameter of the receiving portion 35b is set to be approximately the same as the outer diameter of the coil spring 36 and the outer diameter of the rear end portion of the inner wall surface of the through hole 12c, that is, the maximum diameter of the tapered inner wall surface.

  The locking pieces 35c extend forward from a plurality of locations separated from each other in the circumferential direction of the receiving portion 35b. A claw portion 35d protrudes radially inward from the front end portion of each locking piece 35c. Further, in the receiving portion 35b, a plurality of engaging pieces 35e extend forward from between the locking pieces 35c adjacent in the circumferential direction. At least a part of the outer surface of each engagement piece 35e constitutes a part of a tapered surface whose diameter increases toward the rear side.

  A pair of mounting parts 35f extend rearward from the receiving part 35b. Each mounting portion 35f is curved so as to bulge outward in the radial direction of the receiving portion 35b, corresponding to the outer shape of the shaft portion 31f of the snap pin 31.

  The spring receiver 35 is fitted to the shaft portion 31f of the snap pin 31 in the receiving portion 35b and both mounting portions 35f, and each claw portion 35d enters the locking groove 31b, so that the spring receiver 35 is mounted on the snap pin 31 so as not to fall off. Has been. As described above, in the spring receiver 35, the outer surfaces of the plurality of engagement pieces 35e are intermittently arranged in the circumferential direction with the plurality of locking pieces 35c interposed therebetween. With this configuration, the spring receiver 35 as a whole has the same form as that having a tapered outer peripheral surface whose diameter increases toward the rear side.

<Coil spring 36 (biasing member)>
The coil spring 36 is wound around each of the shaft portion 31 f of the snap pin 31, the cylindrical portion 32 a of the pin holder 32, and both mounting portions 35 f of the spring receiver 35. The coil spring 36 is disposed in a compressed state between the receiving portion 32 c of the pin holder 32 and the receiving portion 35 b of the spring receiver 35.

  In this way, a plurality of single components, that is, the snap pin 31, the pin holder 32, the contact holder 33, the contact terminal 34, the coil spring 36, and the spring receiver 35 are unitized to form the horn switch mechanism 30 that is an assembly. Has been. Therefore, when the horn switch mechanism 30 is attached or replaced, the unitized horn switch mechanism 30 can be handled as one aggregate.

<Elastic member 41>
As shown in FIGS. 6, 7, and 9, the elastic member 41 is made of an elastic material such as rubber (for example, EPDM, silicon rubber, etc.), elastomer, and the like.

The main part of the rear part of the elastic member 41 is constituted by an annular elastic main body part 41a, and the front part of the elastic member 41 is constituted by an elastic cylindrical part 41b and an elastic plate part 41c.
The elastic member 41 has the entire front end surface 41g and the entire rear end surface 41h of the elastic main body 41a as target surfaces. The elastic member 41 is arranged in a state in which the target surface is separated from a member facing the target surface among a member positioned on the front side of the elastic main body 41a and a member positioned on the rear side.

  In the present embodiment, the entire front end surface 41g of the elastic main body portion 41a is spaced rearward from the member located on the front side of the elastic main body portion 41a. The corresponding member is a bottom wall portion 42b of a damper holder 42 described later. With such a configuration, an annular gap G3 is formed between the bottom wall portion 42b and the elastic main body portion 41a.

  Further, the entire rear end surface 41h of the elastic main body portion 41a is spaced forward from a member positioned on the rear side of the elastic main body portion 41a. The corresponding member is the flange portion 31a of the snap pin 31 described above. With such a configuration, an annular gap G1 is formed between the elastic main body portion 41a and the flange portion 31a.

  The rear portion of the inner peripheral surface of the elastic main body portion 41a is configured by a tapered surface 41d whose diameter increases toward the rear side. Between the tapered surface 41d of the elastic main body portion 41a and the cylindrical portion 32a of the pin holder 32, a gap portion G2 is formed in a state of being connected to the gap portion G1.

  An annular protrusion 41f that protrudes radially outward is provided on the outer peripheral portion of the rear end of the elastic main body 41a. The annular protrusion 41f is spaced radially inward from the peripheral wall 33b of the contact holder 33.

  The elastic cylindrical portion 41b has a thin cylindrical shape and extends forward from the inner peripheral portion of the elastic main body portion 41a. The elastic plate-like portion 41c protrudes radially outward from the outer peripheral portion of the front end of the elastic cylindrical portion 41b, and has an annular plate shape with a small thickness. The outer diameter of the elastic plate-like portion 41c is set to be approximately the same as the outer diameter of the receiving portion 32c (transmitted portion).

  The elastic member 41 (mainly the elastic main body 41a) constitutes a dynamic damper together with the airbag device 20 described above. In the present embodiment, the elastic member 41 (mainly the elastic main body 41a) functions as a dynamic damper spring, and the airbag device 20 functions as a damper mass.

  Here, by tuning the size of the elastic member 41 (elastic main body portion 41a) (the respective dimensions in the radial direction and the front-rear direction, etc.), the resonance frequency of the dynamic damper in the vertical direction and the horizontal direction can be reduced. With respect to the vibration in the vertical direction and the horizontal direction, the target vibration suppression frequency, in other words, the frequency to be controlled is set.

<Damper holder 42>
The damper holder 42 is made of an insulating resin material. The damper holder 42 is disposed between the elastic member 41 and the clamping portion 21 i in the bag holder 21 and is disposed on the rear side of the attachment portion 21 f in the bag holder 21. The damper holder 42 covers a partial region of the pin holder 32 in the axial direction.

  As shown in FIGS. 6, 8, and 9, the main part of the damper holder 42 includes a peripheral wall part 42 a and a bottom wall part 42 b that is formed at the front end of the peripheral wall part 42 a and forms the bottom part of the damper holder 42. Has been. Engaging claws 42c are formed at a plurality of locations spaced apart from each other in the circumferential direction of the peripheral wall portion 42a. These engaging claws 42 c are engaged with the corresponding claw engaging holes 33 d of the contact holder 33 from the inside.

  Stoppers 42d are formed at a plurality of locations on the outer peripheral portion of the front end of the peripheral wall portion 42a that are spaced apart from each other in the circumferential direction and spaced apart from the engaging claw 42c in the circumferential direction. These stoppers 42 d are engaged with corresponding notches 33 e of the contact holder 33. By this engagement, the damper holder 42 is positioned in the circumferential direction with respect to the contact holder 33. In addition, the peripheral wall 33b is sandwiched from both the front and rear directions by the engagement of the stoppers 42d with the notches 33e and the engagement of the engagement claws 42c with the claw engagement holes 33d, and the damper holder 42 with respect to the contact holder 33 in the front and rear direction. (Axial direction) is positioned.

  As shown in FIGS. 6 and 9, the bottom wall portion 42b of the damper holder 42 has an annular plate shape, and the inner peripheral portion thereof is located behind the above-described receiving portion 32c. The bottom wall portion 42b is disposed at a location spaced forward from the elastic main body portion 41a of the elastic member 41. With such an arrangement, an annular gap G3 is formed between the bottom wall 42b and the elastic main body 41a.

  An annular transmission portion 42e protrudes forward from the inner peripheral portion of the bottom wall portion 42b. The transmission part 42 e is inserted into the attachment hole 21 g of the bag holder 21 and is in contact with the elastic plate-like part 41 c of the elastic member 41 immediately after the receiving part 32 c of the pin holder 32. In other words, the transmission part 42e is indirectly in contact with the receiving part 32c via the elastic plate-like part 41c.

  The transmission part 42e is arrange | positioned in the location spaced apart from the elastic cylindrical part 41b of the said elastic member 41 to radial direction outward. With such an arrangement, an annular gap G4 is formed between the elastic cylindrical part 41b and the transmission part 42e in a state of being connected to the gap G3.

  In a state where each horn switch mechanism 30 is attached to the bag holder 21 via the elastic member 41 and the damper holder 42 as described above, the pin holder 32 prevents contact between the snap pin 31 and the bag holder 21, that is, The bag holder 21 is supported so as to be movable back and forth with respect to the snap pin 31 while being in an insulated state. Further, the pin holder 32 transmits a backward biasing force of the coil spring 36 to the flange portion 31 a of the snap pin 31.

  In addition, a pair of sandwiching portions 21 i are inserted between the damper holder 42 and the side portion 34 b of the contact terminal 34. Further, the side portion 34b is brought into contact with the outer surface of the clamping portion 21i by the hook portions 33c of the contact holder 33. Due to this contact, the bag holder 21 and the contact terminal 34 are electrically connected.

  Further, the front end portion of the side portion 34b urged by the hook portion 33c is locked to the holding portion 21i. The side portion 34b restricts the contact holder 33 and thus the horn switch mechanism 30 from moving backward from the bag holder 21.

Next, an operation of assembling the airbag device 20 to the core metal 12 via the plurality of horn switch mechanisms 30 will be described.
As shown in FIGS. 7 and 8, the snap pin 31 for each horn switch mechanism 30 is inserted into the through hole 12 c of the holding portion 12 b corresponding to the core metal 12 from the rear side during this operation. With this insertion, the receiving portion 35b of the spring receiver 35 approaches the holding portion 12b, and the engaging piece 35e approaches the inner wall surface of the through hole 12c. Further, the front end portion 31 c of the shaft portion 31 f in the snap pin 31 contacts the clip 13. Further, when the snap pin 31 or the like is moved forward against the urging force of the clip 13, the clip 13 is elastically deformed outward in the radial direction of the snap pin 31. When the snap pin 31 is moved to a position where the locking groove 31b faces the clip 13, the clip 13 tries to enter the locking groove 31b by its own elastic restoring force.

  On the other hand, the claw portion 35d of the spring receiver 35 biased forward by the coil spring 36 enters the locking groove 31b. Therefore, the clip 13 enters between the claw portion 35d and the front end portion 31c while compressing the coil spring 36 rearward in the process of entering the locking groove 31b. By this entry, the claw portion 35d is positioned on the rear side of the clip 13 in the locking groove 31b. In the clip 13, the portion located in front of the through hole 12 c is sandwiched from the front and rear by the claw portion 35 d urged forward by the coil spring 36 and the front end portion 31 c, and the movement is restricted. On the other hand, the movement of the snap pin 31 in the front-rear direction is restricted by the clip 13 that has entered the locking groove 31b. In this way, the snap pin 31 is locked to the metal core 12 by the clip 13, so that each horn switch mechanism 30 is fastened to the metal core 12 and the airbag device 20 is attached to the metal core 12. . The structure in which the snap pin 31 is locked to the cored bar 12 by the elasticity of the clip 13 as it is inserted into the through hole 12c is also called a snap-fit structure.

  In the assembled state by the snap fit structure, the snap pin 31 for each horn switch mechanism 30 locked to the core metal 12 advances and retracts the bag holder 21 of the airbag device 20 with respect to the core metal 12 via the pin holder 32. It supports so that it becomes possible, ie, it can approach to or separate from the metal core 12.

Next, the operation of the steering wheel 10 of the present embodiment configured as described above will be described.
In a normal state where a frontal impact (front collision) or the like is not applied to the vehicle, the airbag device 20 is in a state in which gas is not ejected from the gas ejection portion 23e of the inflator 23 and the airbag is folded. Maintained.

  When the airbag device 20 is not pushed down at the normal time, as shown in FIGS. 7 and 8, the contact protrusion 34c of the contact terminal 34 is connected to the rear end portion (fixed-side contact portion) of the snap pin 31. ) From the rear. The contact terminal 34 and the snap pin 31 are disconnected from each other, and the horn device 40 does not operate. At this time, a backward biasing force of the coil spring 36 is applied via the pin holder 32 to the flange portion 31 a of the snap pin 31 locked to the core metal 12 by the clip 13.

  Further, a forward biasing force of the coil spring 36 is applied to the spring receiver 35 through the receiving portion 35b, and the claw portion 35d that has entered the locking groove 31b of the snap pin 31 in the spring receiving portion 35 is in the locking groove 31b. The clip 13 is pressed forward. By this pressing, the clip 13 is sandwiched from the front and rear by the front end portion 31c and the claw portion 35d, and the movement is restricted.

Further, the pin holder 32 is interposed between the shaft portion 31f of the snap pin 31 and the side portion 34b of the contact terminal 34, and insulates the shaft portion 31f and the side portion 34b.
At this time, the load of the airbag device 20 is transmitted to the pin holder 32 mainly through the contact holder 33, the damper holder 42 and the elastic member 41.

  Here, the rear end portion of the cylindrical portion 32 a in the pin holder 32 is spaced forward from the top plate portion 33 a of the contact holder 33. Therefore, the load of the airbag device 20 is not transmitted directly to the pin holder 32 via the contact holder 33.

  For this reason, if vibrations in the vertical direction and the horizontal direction are transmitted to the steering wheel 10 during the normal time and during idling of the vehicle-mounted engine, the vibration is transmitted to the cored bar 12 and each horn switch. It is transmitted to the airbag device 20 via the mechanism 30.

  When vibration is transmitted to the steering wheel 10 as described above, the airbag device 20 functions as a damper mass of the dynamic damper according to the vibration, and the elastic main body 41a of the elastic member 41 mainly functions as a spring of the dynamic damper.

  As shown in FIG. 9, at this time, the gap G3 between the elastic main body 41a and the member (the bottom wall 42b of the damper holder 42) located on the front side thereof is elastically deformed forward of the elastic main body 41a. Is acceptable. In particular, in the present embodiment, since the entire front end surface 41g of the elastic main body portion 41a is separated from the bottom wall portion 42b, a part of the front end surface 41g is in contact with the bottom wall portion 42b. Compared to the above, the gap G3 is large, and the allowable elastic deformation amount is large. The front end surface 41g of the elastic main body portion 41a is unlikely to contact the bottom wall portion 42b, and the frictional force associated with the contact is unlikely to occur. The elastic main body portion 41a is easily elastically deformed forward as compared with the case where it is in contact with the bottom wall portion 42b.

  At this time, the gap G1 between the elastic main body portion 41a and the member located on the rear side (the flange portion 31a of the snap pin 31) allows the elastic deformation of the elastic main body portion 41a to the rear. In particular, in the present embodiment, since the entire rear end surface 41h of the elastic main body 41a is separated from the flange portion 31a, a part of the rear end surface 41h is in contact with the flange portion 31a. In comparison, the gap G1 is large, and the allowable amount of elastic deformation is large. The rear end surface 41h of the elastic main body portion 41a is unlikely to contact the flange portion 31a, and the frictional force associated with the contact is unlikely to occur. The elastic main body portion 41a is easily elastically deformed backward as compared with the case where the elastic main body portion 41a is in contact with the flange portion 31a.

  Therefore, the elastic main body 41a vibrates (resonates) in the vertical direction, the horizontal direction, etc. with the airbag device 20 while elastically deforming at a resonance frequency that is the same as or close to the target frequency of vibration of the steering wheel 10. Absorbs vibration energy of the steering wheel 10. By this absorption, each vibration of the steering wheel 10 in the vertical direction and the horizontal direction is suppressed (damped).

  In addition, since the gap G2 is formed between the tapered surface 41d of the elastic main body 41a and the cylindrical part 32a of the pin holder 32, the elastic member 41 can be elastically deformed even in the gap G2. Compared to the case where the gap G2 is not formed, it is easily elastically deformed in the radial direction or the like.

  Further, since the gap G4 is formed between the elastic cylindrical portion 41b and the transmission portion 42e, the elastic cylindrical portion 41b can be elastically deformed in the radial direction even in the gap G4. The elastic cylindrical portion 41b is more easily elastically deformed in the radial direction than that in which the gap portion G4 is not formed.

  On the other hand, when the airbag device 20 is pushed down for the operation of the horn device 40 at the normal time, the force applied to the airbag device 20 is transmitted through the contact holder 33 in at least one horn switch mechanism 30. Are transmitted to the contact terminal 34 and the damper holder 42. The damper holder 42 is pressed forward, and the movement of the damper holder 42 is transmitted to the pin holder 32 via the transmission part 42e and the receiving part 32c. That is, the transmission part 42e moves forward together with the damper holder 42, but the movement is indirectly transmitted to the receiving part 32c located immediately before the transmission part 42e via the elastic plate-like part 41c of the elastic member 41. Is done. In addition to the function of receiving the backward biasing force of the coil spring 36, the receiving portion 32c also functions as a transmitted portion and receives a forward force transmitted from the damper holder 42 (transmitting portion 42e).

  By transmitting this force, the pin holder 32 is slid forward along the shaft portion 31 f of the snap pin 31 against the coil spring 36. Further, the contact terminal 34 moves forward together with the contact holder 33.

  At this time, as the airbag device 20 is pushed down, the coil spring 36 is compressed and the repulsive force increases, so that the operation load increases and the operation feeling becomes good.

  When at least one of the plurality of contact protrusions 34c of the contact terminal 34 comes into contact with the rear end surface of the snap pin 31, the core metal 12 connected to the ground GND (vehicle body ground) and the bag holder 21 are connected to the clip 13, Conduction is made through the snap pin 31 and the contact terminal 34. By this conduction, the horn switch mechanism 30 is closed, and the horn device 40 electrically connected to the bag holder 21 is activated.

  By the way, when an impact is applied to the vehicle from the front due to a front collision or the like, the driver tends to lean forward due to inertia. On the other hand, in the airbag device 20, the inflator 23 is operated in response to the impact, and gas is ejected from the gas ejection part 23e. By supplying this gas to the airbag, the airbag is deployed and inflated. When the pressing force applied to the outer skin portion 24a of the pad portion 24 increases by the airbag, the outer skin portion 24a is broken at the thin portion 24c. The airbag continues to be deployed and inflated backward through the opening created by the break. A deployed and inflated airbag is interposed in front of the driver who leans forward due to the impact of the front collision, restrains the driver's forward tilt and protects the driver from the impact.

  When the airbag is inflated rearward, a force directed rearward is applied to the bag holder 21. In this regard, in this embodiment, the snap pin 31 for each horn switch mechanism 30 is supported by the core metal 12 (holding portion 12b). A flange 31 a formed at the rear end of each snap pin 31 is located behind the attachment hole 21 g of the bag holder 21. Moreover, the flange portion 31a has an outer diameter larger than the inner diameter of the mounting hole 21g. Therefore, when the bag holder 21 moves rearward, the flange 31a functions as a stopper by contacting the peripheral portion of the attachment hole 21g in the bag holder 21. Therefore, the bag holder 21 and thus the airbag device 20 are restricted from moving excessively rearward by the flange portion 31 a of the snap pin 31.

According to the embodiment described in detail above, the following effects can be obtained.
(1) A cylindrical pin holder 32 (slider) is slidably covered in the front-rear direction on a shaft portion 31 f of a snap pin 31 (support member) inserted through the bag holder 21 of the airbag device 20. A part of the axial direction region of the snap pin 31 is covered with an annular damper holder 42. An elastic member 41 is interposed between the pin holder 32 and the damper holder 42.

  The entire front end surface 41g of the elastic main body 41a of the elastic member 41 is separated rearward from the member (the bottom wall 42b of the damper holder 42) located on the front side of the elastic main body 41a. The entire rear end surface 41h of the elastic main body 41a is spaced forward from the member (the flange 31a of the snap pin 31) located on the rear side of the elastic main body 41a (FIGS. 7 and 9).

  Therefore, the elastic main body portion 41a is easily elastically deformed both forward and backward, and when the steering wheel 10 vibrates in the vertical direction and the left-right direction, the elastic main body portion 41a is vibrated at a target resonance frequency. And the effect of suppressing the vibration of the steering wheel 10 can be improved.

  (2) The pin holder 32 is urged backward by the coil spring 36 (biasing member). At least each rear end portion of the snap pin 31 and the pin holder 32 is covered with a contact holder 33 (cap member) in a state of being separated rearward from the rear end portion of the pin holder 32. A contact terminal 34 (movable side contact portion) is attached in the contact holder 33, and a damper holder 42 is attached to the contact holder 33 (FIG. 7).

  Therefore, when the airbag device 20 is pushed down, the pin holder 32 can be slid forward against the coil spring 36 by moving the contact holder 33 forward along with the pushing down. In the process of sliding, the horn device 40 can be operated by bringing the contact terminal 34 into contact with the rear end portion (fixed side contact portion) of the snap pin 31.

  (3) The transmission part 42e is provided in the inner peripheral part of the bottom wall part 42b in the damper holder 42. A receiving portion 32c is provided as a transmitted portion at a location on the outer peripheral portion of the pin holder 32 and immediately before the transmitting portion 42e. And the movement to the front of the damper holder 42 accompanying the depression of the airbag apparatus 20 is transmitted to the pin holder 32 via the transmission part 42e and the receiving part 32c (FIG. 7, FIG. 9).

  Therefore, when the airbag device 20 is pushed down for the operation of the horn device 40, the force applied to the airbag device 20 is transmitted to the pin holder 32 via the contact holder 33 and the damper holder 42. Can be slid forward against the coil spring 36 (biasing member), and the effect (2) can be obtained.

In addition, the said embodiment can also be implemented as a modification which changed this as follows.
<About Pin Holder 32 (Slider)>
-The transmitted part in the cylindrical part 32a of the pin holder 32 may be provided in a place different from the receiving part 32c.

-Although a to-be-transmitted part may be integrally formed in the cylindrical part 32a, it may be formed separately.
<About the contact holder 33 (cap member)>
The contact holder 33 may cover the front part of each of the snap pins 31 and the pin holder 32 in addition to the rear ends thereof.

<About the biasing member>
As the urging member, on the condition that the pin holder 32 (slider) is urged rearward, a type of spring different from the coil spring or an elastic member different from the spring may be used.

<About the elastic member 41>
The elastic member 41 has only the former (the entire front end surface 41g) of the entire front end surface 41g and the entire rear end surface 41h of the elastic main body portion 41a rearward from the member positioned on the front side of the elastic main body portion 41a. You may arrange | position in the state spaced apart. In this case, since the gap between the elastic main body portion 41a and the member located on the front side thereof allows elastic deformation of the elastic main body portion 41a forward, the elastic main body portion 41a elastically deforms forward. It becomes easy to do.

  Further, the elastic member 41 may be disposed in a state where only the latter (entire of the rear end surface 41h) is separated forward from a member located on the rear side of the elastic main body portion 41a. In this case, since the gap between the elastic main body portion 41a and the member positioned on the rear side allows elastic deformation of the elastic main body portion 41a to the rear, the elastic main body portion 41a is elastically deformed to the rear. It becomes easy to do.

  Even in these cases, the elastic main body portion 41a can be easily elastically deformed and the effect of suppressing the vibration of the steering wheel 10 can be improved, although not as much as in the above embodiment.

-As the elastic member 41, what has a shape different from the said embodiment may be used. In connection with this, each shape of the pin holder 32 and the damper holder 42 may be changed.
-At least one of the gaps G2 and G4 may be omitted.

  The elastic member 41 may be formed integrally with the cylindrical portion 32a of the pin holder 32. This can be achieved, for example, by performing so-called insert molding in which the pin holder 32 is placed in the mold as an insert member and an elastic material is injected outside the cylindrical portion 32a of the pin holder 32.

The elastic plate portion 41c does not necessarily have an annular shape.
The elastic plate-like portion 41c may be omitted from the elastic member 41. In this case, the transmission portion 42e of the damper holder 42 is in direct contact with the receiving portion 32c (transmitted portion) of the pin holder 32.

  -By changing the shape of the elastic member 41, the size of the gap G2 between the tapered surface 41d and the cylindrical portion 32a may be changed. By this change, it is possible to change the target vibration suppression frequency. For example, it is possible to reduce the vibration suppression frequency by increasing the gap G2.

<Damper holder 42>
The transmission portion 42e does not necessarily have an annular shape, and may be formed in an arc shape along the circle at a plurality of locations on the circle centering on the axis L2 of the snap pin 31.

<Others>
-The horn switch mechanism 30 may be changed into what has the structure shown in FIG. In the horn switch mechanism 30 of this modification, a cylindrical diameter-enlarged portion 32 b is formed at the rear end of the cylindrical portion 32 a of the pin holder 32. The enlarged diameter portion 32 b surrounds the flange portion 31 a of the snap pin 31.

  When the airbag device 20 is pushed down, the contact holder 33 is moved forward while the elastic member 41 is deformed, and is brought into contact with the enlarged diameter portion 32 b of the pin holder 32. Further, when the airbag device 20 is pushed down and the pin holder 32 is slid forward against the coil spring 36, the contact protrusion 34 c of the contact terminal 34 (movable side contact portion) becomes the rear end of the snap pin 31. The horn device 40 is operated by being brought into contact with the portion (fixed side contact portion).

In this case, the transmission part 42e of the damper holder 42 is unnecessary.
When the horn switch mechanism 30 of the above type is employed, the member located on the front side of the elastic main body 41a is the bag holder 21. Further, the member located on the rear side of the elastic main body 41 a becomes the enlarged diameter portion 32 b of the pin holder 32.

  The elastic member 41 has the entire front end surface 41g of the elastic main body portion 41a separated from the bag holder 21 rearward. Further, the entire rear end surface 41h of the elastic main body 41a is spaced forward from the enlarged diameter portion 32b.

The steering wheel can be applied to a steering wheel of a steering device in a vehicle other than a vehicle, such as an aircraft or a ship.
In addition, the technical ideas that can be grasped from the respective embodiments will be described together with their effects.

(A) a support member inserted through the bag holder of the airbag device;
A cylindrical slider that is slidable in the front-rear direction on the support member and is urged rearward by the urging member;
A cap member that covers at least each rear end portion of the support member and the slider and is attached with a movable side contact portion in a state of being separated rearward from the rear end portion of the slider;
A damper holder attached to the cap member in a state of covering a part of the slider;
An elastic member having an elastic main body interposed between the slider and the damper holder, and when the airbag device is not pressed down, the airbag device functions as a damper mass of a dynamic damper, and the elastic member When the airbag device is pushed down, the cap member is moved forward along with the pushing down, and the slider is slid forward against the biasing member. A steering wheel horn switching mechanism configured to operate the horn device by bringing the movable contact portion into contact with the rear end portion of the support member in the process of sliding,
The elastic member has at least one of the entire front end surface and the entire rear end surface of the elastic main body portion as a target surface, and the target surface is a member positioned on the front side of the elastic main body portion and a member positioned on the rear side. And a steering wheel horn switching mechanism disposed in a state of being separated from a member facing the target surface.

  When the steering wheel incorporating the horn switching mechanism vibrates, the airbag device functions as a damper mass of the dynamic damper, and the elastic main body of the elastic member functions as a spring of the dynamic damper.

  In the elastic member, at least one of the entire front end surface and the entire rear end surface of the elastic main body portion is a target surface, and the target surface is a member positioned on the front side of the elastic main body portion and a member positioned on the rear side. Among these, it is separated from the member facing the same target surface. The space between the target surface of the elastic main body portion and the opposing member allows the elastic main body portion to elastically deform toward the side approaching the opposing member. The target surface is unlikely to contact the opposing member, and the frictional force associated with the contact is unlikely to occur. The elastic main body portion is easily elastically deformed toward the opposing member side.

  Therefore, the elastic main body vibrates with the airbag device while absorbing elastic vibration energy of the steering wheel while elastically deforming at a resonance frequency equal to or close to the target frequency of the steering wheel vibration. This absorption effectively suppresses vibration of the steering wheel.

  DESCRIPTION OF SYMBOLS 10 ... Steering wheel, 20 ... Air bag apparatus, 21 ... Bag holder, 31 ... Snap pin (support member), 31a ... Gutter, 32 ... Pin holder (slider), 32c ... Receiving part (transmitted part), 33 ... Contact Holder (cap member) 34... Contact terminal (movable contact portion) 36. Coil spring (biasing member) 40. Horn device 41. Elastic member 41 a Elastic body 41 g Front end 41 h Rear end face, 42 ... damper holder, 42b ... bottom wall part, 42e ... transmission part.

Claims (7)

A support member inserted through the bag holder of the airbag device;
A cylindrical slider that is slidable on the support member in the front-rear direction;
A cylindrical damper holder covering a part of the axial region of the slider;
An annular elastic main body interposed between the slider and the damper holder, and an elastic member having an elastic cylindrical portion extending forward from an inner peripheral portion of the elastic main body, and the airbag device includes a dynamic damper. A steering hole configured to function as a damper mass and to function the elastic main body as a spring of a dynamic damper,
A transmission part is provided in the inner peripheral part of the bottom wall part in the damper holder,
The outer peripheral portion of the slider is provided so that a transmitted portion to which the forward movement of the damper holder is transmitted through the transmitting portion is positioned immediately before the transmitting portion,
The elastic member has at least one of the entire front end surface and the entire rear end surface of the elastic main body portion as a target surface, and the target surface is a member positioned on the front side of the elastic main body portion and a member positioned on the rear side. And a steering wheel arranged in a state of being separated from a member facing the target surface. A support member inserted through the bag holder of the airbag device;
A cylindrical slider that is slidable on the support member in the front-rear direction;
A cylindrical damper holder covering a part of the axial region of the slider;
An annular elastic main body interposed between the slider and the damper holder, and an elastic member having an elastic cylindrical portion extending forward from an inner peripheral portion of the elastic main body, and the airbag device includes a dynamic damper. A steering hole configured to function as a damper mass and to function the elastic main body as a spring of a dynamic damper,
The elastic member has at least one of the entire front end surface and the entire rear end surface of the elastic main body portion as a target surface, and the target surface is a member positioned on the front side of the elastic main body portion and a member positioned on the rear side. And is arranged in a state of being separated from the member facing the same target surface ,
The elastic main body portion has a rear portion whose diameter increases toward the rear side and an inner peripheral surface and a front portion which are formed by a tapered surface formed in a state of being separated from a member located on the rear side, and the diameter of the elastic body portion decreases toward the front side. The steering wheel which has at least one of the outer peripheral surfaces comprised by the taper surface formed in the state spaced apart from the member located in the said front side . The rear part of the inner peripheral surface of the elastic main body part is constituted by a tapered surface formed in a state where the diameter increases toward the rear side and is separated from the member located on the rear side, and the front part of the outer peripheral surface of the elastic main body part The steering wheel according to claim 2 , wherein the steering wheel is configured by a tapered surface formed such that the diameter thereof decreases toward the front side and is separated from a member located on the front side . The elastic member separates the entire front end surface of the elastic main body portion rearward from a member located on the front side of the elastic main body portion, and the entire rear end surface of the elastic main body portion is disposed behind the elastic main body portion. The steering wheel of any one of Claims 1-3 arrange | positioned in the state spaced apart from the member located in the side to the front. The steering wheel according to any one of claims 1 to 4 , wherein the member positioned on the front side of the elastic main body is an annular bottom wall that forms a bottom of the damper holder. The steering wheel according to any one of claims 1 to 5 , wherein the member positioned on the rear side of the elastic main body is an annular flange formed on an outer periphery of the support member. An urging member for urging the slider rearward, a cap member covering at least each rear end of the support member and the slider in a state of being separated rearward from the rear end of the slider, and within the cap member An attached movable side contact portion;
The damper holder is attached to the cap member;
When the airbag device is pushed down, the cap member is moved forward along with the pushing down, so that the slider is slid forward against the urging member. steering wheel according to any one of claims 1 to 6, the parts in contact with the rear end portion of the support member is configured to actuate the horn device.

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