WO2020003777A1 - ステアリングホイールにおけるダンパユニットの取付固定構造及びステアリングホイール - Google Patents
ステアリングホイールにおけるダンパユニットの取付固定構造及びステアリングホイール Download PDFInfo
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- WO2020003777A1 WO2020003777A1 PCT/JP2019/019042 JP2019019042W WO2020003777A1 WO 2020003777 A1 WO2020003777 A1 WO 2020003777A1 JP 2019019042 W JP2019019042 W JP 2019019042W WO 2020003777 A1 WO2020003777 A1 WO 2020003777A1
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- WIPO (PCT)
- Prior art keywords
- steering wheel
- mounting
- pin
- damper unit
- collar member
- Prior art date
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- 239000000463 material Substances 0.000 claims abstract description 24
- 238000013016 damping Methods 0.000 claims abstract description 12
- 230000002093 peripheral effect Effects 0.000 claims description 6
- 239000002184 metal Substances 0.000 abstract description 23
- 230000002159 abnormal effect Effects 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 4
- 230000005540 biological transmission Effects 0.000 description 6
- 238000003780 insertion Methods 0.000 description 6
- 230000037431 insertion Effects 0.000 description 6
- 229920005989 resin Polymers 0.000 description 6
- 239000011347 resin Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000000465 moulding Methods 0.000 description 4
- 229920003002 synthetic resin Polymers 0.000 description 4
- 239000000057 synthetic resin Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D1/00—Steering controls, i.e. means for initiating a change of direction of the vehicle
- B62D1/02—Steering controls, i.e. means for initiating a change of direction of the vehicle vehicle-mounted
- B62D1/04—Hand wheels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D1/00—Steering controls, i.e. means for initiating a change of direction of the vehicle
- B62D1/02—Steering controls, i.e. means for initiating a change of direction of the vehicle vehicle-mounted
- B62D1/04—Hand wheels
- B62D1/10—Hubs; Connecting hubs to steering columns, e.g. adjustable
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
- B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
- B60R21/20—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components
- B60R21/203—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components in steering wheels or steering columns
- B60R21/2035—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components in steering wheels or steering columns using modules containing inflator, bag and cover attachable to the steering wheel as a complete sub-unit
- B60R21/2037—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components in steering wheels or steering columns using modules containing inflator, bag and cover attachable to the steering wheel as a complete sub-unit the module or a major component thereof being yieldably mounted, e.g. for actuating the horn switch or for protecting the driver in a non-deployment situation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D7/00—Steering linkage; Stub axles or their mountings
- B62D7/22—Arrangements for reducing or eliminating reaction, e.g. vibration, from parts, e.g. wheels, of the steering system
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D7/00—Steering linkage; Stub axles or their mountings
- B62D7/22—Arrangements for reducing or eliminating reaction, e.g. vibration, from parts, e.g. wheels, of the steering system
- B62D7/222—Arrangements for reducing or eliminating reaction, e.g. vibration, from parts, e.g. wheels, of the steering system acting on the steering wheel
Definitions
- the mounting pin member can be fixedly mounted on the support portion without looseness, thereby preventing abnormal noise and improving durability, and ensuring the accurate transmission of vibration to the airbag module.
- the present invention relates to a damper unit mounting and fixing structure for a steering wheel which can improve a damping action, has a simple structure, and is excellent in mounting workability, and a steering wheel.
- Patent Literature 1 discloses a technique in which a damper unit for damping the vibration of a steering wheel is incorporated between a steering wheel and an airbag module serving as a damper mass.
- Patent Document 1 “Steering wheel with airbag device” includes a horn switch mechanism fixed to a core of a steering wheel body and a fixing pin as a support member that supports the bag holder so as to be able to advance and retreat with respect to the core.
- a movable mounting member as an insulating portion interposed between the fixing pin and the bag holder to electrically insulate therebetween.
- the horn switch mechanism includes a compression coil spring as an urging member for urging the bag holder away from the cored bar, and a contact terminal as a movable contact portion that moves together with the bag holder. Then, the horn device of the vehicle is configured such that the contact terminal is brought into contact with the fixing pin and becomes conductive by the movement of the bag holder toward the core metal against the urging force of the compression coil spring, thereby operating the horn device of the vehicle.
- a damper unit for damping the vibration of the steering wheel is usually installed between the airbag module serving as a damper mass and the steering wheel, and provided so as to connect them.
- the damper unit is provided with a mounting pin member.
- the mounting pin member is mounted and fixed to a supporting portion of either the steering wheel or the airbag module.
- the steering wheel and the airbag module are connected by the damper unit.
- the mounting pin member itself vibrates in the damper unit after mounting on the support portion, adversely affecting the transmission of vibration from the steering wheel to the airbag module, and damping the vibration of the steering wheel as designed.
- the mounting pin member itself vibrates in the damper unit after mounting on the support portion, adversely affecting the transmission of vibration from the steering wheel to the airbag module, and damping the vibration of the steering wheel as designed.
- the present invention has been made in view of the above-mentioned conventional problems, and enables an attachment pin member to be attached and fixed to a support portion without rattling, thereby preventing abnormal noise and improving durability, and an airbag module.
- the purpose of the present invention is to provide a structure for mounting and fixing a damper unit in a steering wheel, which can improve the vibration damping effect of a steering wheel by ensuring accurate transmission of vibration to a steering wheel, and has a simple structure and excellent workability in mounting.
- the mounting and fixing structure of the damper unit in the steering wheel according to the present invention includes a damper unit for damping vibration of the steering wheel between the steering wheel and an airbag module serving as a damper mass.
- a pin member is attached and fixed to a supporting portion of the steering wheel or the airbag module, and is formed in a hollow cylindrical shape having an opening at one end in a length direction into which the attaching pin member is inserted.
- a collar member fixedly provided on the support portion, a seat portion provided at the other end in the length direction of the collar member, and on which an insertion-side tip of the mounting pin member is seated; Positioning formed between the sheet part and the opening, and formed in a direction crossing the length direction A groove, a locking groove formed in the mounting pin member, which is positioned in the positioning groove when the insertion-side tip is seated on the seat, and inserted into the positioning groove through the support portion; A spring member that is elastically locked in the locking groove when the insertion-side tip is seated on the seat portion and holds the mounting pin member.
- the seat portion be composed of a plurality of lever pieces protruding from the inner peripheral surface of the hollow cylindrical collar member in a cantilever manner.
- the seat portion includes a grip for gripping the insertion-side tip of the mounting pin member.
- a steering hole according to the present invention is provided with a structure for mounting and fixing a damper unit in the steering wheel.
- the mounting pin member is prevented from moving (vibrating) between the steering wheel and the airbag module, and the support portion is suppressed. It can stably attach and fix it, preventing abnormal noise and improving durability, and ensuring accurate transmission of vibration to the airbag module can improve the vibration damping effect of the steering wheel, and has a simple configuration Excellent mounting workability can be demonstrated.
- FIG. 3 is an explanatory diagram for explaining a configuration of a steering wheel to which a mounting and fixing structure of a damper unit in the steering wheel according to the present invention is applied.
- FIG. 2 is a perspective view illustrating an example of a damper unit provided in the steering wheel illustrated in FIG. 1.
- FIG. 4 is a cross-sectional view showing a preferred embodiment of a mounting and fixing structure of a damper unit in the steering wheel according to the present invention.
- FIG. 4 is a sectional view taken along line FF in FIG. 3.
- FIG. 4 is an explanatory diagram illustrating a collar member used for the mounting and fixing structure of the damper unit illustrated in FIG. 3.
- FIG. 4 is an explanatory diagram illustrating a mounting pin member used in the mounting and fixing structure of the damper unit illustrated in FIG. 3.
- FIG. 4 is an explanatory diagram illustrating a state where a spring material used in the mounting and fixing structure of the damper unit illustrated in FIG. 3 is installed on a cored bar member.
- FIG. 1 is a diagram illustrating an outline of a steering wheel 1 to which a mounting and fixing structure of a damper unit in a steering wheel according to the present invention is applied.
- FIG. 1A illustrates the entire steering wheel 1.
- each direction is illustrated on the assumption that the steering wheel 1 attached to the vehicle is in a neutral steering position.
- the Z axis is set such that the direction of the front wheel of the vehicle of a steering column (steering shaft) (not shown) is downward and the direction of the steering wheel 1 is upward.
- the 12 o'clock position of the analog 12-hour clock is the vehicle front side, and the X-axis extends from the 9 o'clock (left) to 3 o'clock (right), and the 6 o'clock (rear).
- To 12 o'clock (forward) is the Y axis.
- the side viewed from the driver side is described as the front side, and the opposite side is described as the back side.
- the steering wheel 1 is installed in the driver's seat of the vehicle, is connected to a steering shaft that passes through a steering column (not shown), and transmits a driver's operation force to a steering gear or the like.
- an airbag module 2 that functions as a front airbag in an emergency is mounted.
- the airbag module 2 normally also functions as a horn switch pressed by the driver when sounding the horn.
- FIG. 1 (b) is an exploded view of the steering wheel 1 of FIG. 1 (a) with the airbag module 2 removed.
- the driver side of the airbag module 2 is covered with a resin horn cover 3 functioning as a design surface.
- a box-shaped housing 4 is provided, in which an airbag cushion (not shown) that is deployed and inflated in an emergency is folded and accommodated.
- An inflator (not shown) is also provided in the housing 4.
- inflator gas is supplied from the inflator to the airbag cushion, and the airbag cushion ruptures the horn cover 3 and expands and inflates into the cabin space to restrain the driver.
- the basic portion of the steering wheel 1 is constituted by a metal core member 5.
- the core metal member 5 roughly includes a central boss region 6, a circular rim 7 gripped by the driver, and spokes 8 connecting the boss region 6 and the rim 7.
- the boss region 6 is provided with a shaft hole 9 to which the steering shaft is connected.
- the airbag module 2 in addition to the function as the front airbag, the airbag module 2 has a function as a horn switch as described above, and a function as a module damper mechanism for damping vibration.
- the components realizing the function as the horn switch and the module damper mechanism will be described below.
- the damper unit 10 is a member that elastically attaches the housing 4 to the metal core member 5, and forms the center of the module damper mechanism.
- a rod-shaped mounting pin member (hereinafter, simply referred to as a "pin") 11 protrudes toward the boss region 6 of the core metal member 5 located on the lower side in the Z-axis direction (see FIG. 3).
- the pin 11 is pushed into a hole 13 formed in the metal core member 5 via a collar member 12 mounted on the metal core member 5, and is set on the back surface 5 a of the metal core member 5. It is connected to a shaft-shaped spring member 14 described later.
- the airbag module 2 is attached to the metal core member 5 by the connection between the pin 11 and the spring member 14.
- the pin 11 is inserted through the horn spring 15 and the collar member 12 to be inserted into the metal core member 5.
- the horn spring 15 has a coil shape and is installed between the airbag module 2 and the core member 5 to secure a gap therebetween. Then, the airbag module 2 released from being pushed down by the driver during the horn operation is separated from the cored bar member 5 and returned to the original position.
- the damper unit 10 includes an inner sleeve 16, an annular sheet 16 a formed on the inner sleeve 16, and an arrangement facing the annular sheet 16 a.
- An annular elastic body 18 provided between the annular piece 17 engaged with the outwardly formed annular flange 16b and surrounding the inner sleeve 16 for damping vibration,
- An annular outer sleeve 19 is provided so as to cover the outer side.
- the pin 11 of the damper unit 10 is slidably inserted into the inner sleeve 16 inside the inner sleeve 16.
- the outer sleeve 19 is attached to a through hole 20 formed in the housing 4 constituting the airbag module 2, whereby the damper unit 10 is fixed to the airbag module 2.
- the airbag module 2 provided with the damper unit 10 is connected to the steering wheel 1 by attaching and fixing the pin 11 to the metal core member 5 as described later.
- the airbag module 2 is provided so that the pin 11 on the steering wheel 1 side is slidably inserted into the inner sleeve 16 of the damper unit 10 so as to be movable toward the steering wheel 1 side.
- the airbag module 2 is slidably connected to the steering wheel 1 via the pin 11 while being elastically supported by the damper unit 10 having the elastic body 18.
- the vibration of the steering wheel 1 is transmitted to the damper unit 10 via the pin 11, and the transmitted vibration is attenuated in the damper unit 10 having the airbag module 2 as a damper mass.
- the pin 11 is formed of an electrically conductive metal material, and has a first contact 21 of a horn switch at one end located on the housing 4 side.
- the housing 4 is provided with a second contact 22 in an arrangement facing the first contact 21 in the direction in which the horn spring 15 expands and contracts (Z-axis direction).
- the second contact point 22 moves toward and contacts the first contact point 21, and the horn sounds.
- the horn spring 15 retreats the airbag module 2, thereby separating the second contact 22 from the first contact 21 and stopping the sounding.
- the damper unit 10 installed on the airbag module 2 side is mounted and fixed to the support portion of the steering wheel 1 by the mounting pin member 11 of the damper unit 10. is there.
- the core metal member 5 of the steering wheel 1 is used as a support.
- FIG. 3 is a cross-sectional view showing the mounting and fixing structure
- FIG. 4 is a cross-sectional view taken along the line FF in FIG. 3
- FIG. 5 illustrates a collar member 12 used in the mounting and fixing structure of the damper unit in FIG.
- FIG. 5A is a perspective view of the collar member 12, and
- FIG. 5B is a side sectional view.
- a hole 13 for inserting the pin 11 from the front side to the back side is formed through the cored bar member 5.
- the collar member 12 is detachably fitted and fixed in the hole 13.
- the collar member 12 may be formed of any material, for example, a synthetic resin material.
- the collar member 12 is formed in a hollow cylindrical shape having an annular flange 12a provided at one longitudinal end.
- the collar member 12 is fixed to the hole 13 by pressing the flange 12 a against the front side of the metal core member 5.
- the flange 12a also serves as a spring seat for the horn spring 15.
- a circular opening 12b for inserting the pin 11 into the collar member 12 is formed at one end in the length direction of the collar member 12 where the flange 12a is formed.
- the collar member 12 is formed in a truncated cone shape in the length direction (Z-axis direction) such that the outer diameter and the inner diameter are gradually narrowed from one end having the opening 12b to the other end.
- a seat portion 23 is provided on which the insertion-side tip 11a of the pin 11 passed through the inside of the collar member 12 is seated.
- the seat portion 23 is provided as an example on the collar member 12 by integral molding.
- the sheet portion 23 is integrally formed by resin molding.
- “Seat” is preferably such that when the pin 11 is passed through the inside of the collar member 12, the insertion-side tip 11 a of the pin 11 is in contact with the seat portion 23, which means this contact state.
- the term “seated” is not limited to the contact state, but also includes a non-contact state in which a slight gap exists between the insertion-side tip 11a and the collar member 12.
- the damper unit 10 is attached to one end of the pin 11 in the length direction where the first contact point 21 is formed, and the other end in the length direction protruding from the damper unit 10 is the insertion-side tip 11a. .
- FIG. 6 is an explanatory view for explaining a mounting pin member used in the mounting and fixing structure of the damper unit shown in FIGS. 3 and 4, and FIG. 6 (a) is a perspective view as viewed obliquely from above. (B) is a perspective view seen from obliquely below.
- the insertion-side tip 11 a is formed in a conical shape, and the first contact 21 adjacent to the insertion-side tip 11 a is described later when the insertion-side tip 11 a is seated on the seat portion 23.
- An annular locking groove 11b located in the positioning groove 12d is formed.
- the pin 11 is inserted into the collar member 12 to a depth where the insertion-side tip 11a reaches the sheet portion 23.
- the sheet portion 23 is formed so as to substantially close the other end of the collar member 12.
- the seat portion 23 includes a plurality of lever pieces 23a. Each lever piece 23a is provided so as to protrude from an inner peripheral surface 12c of the collar member 12 in a cantilever manner toward a central axis C (see FIG. 5B) along the length direction of the collar member 12. .
- the lever piece 23 a when assuming a wall closing the other end of the collar member 12, the lever piece 23 a is directed toward the small hole formed at the center position of the wall and the inner hole 12 c of the collar member 12 from the small hole. And a plurality of slits extending radially.
- the lever piece 23a is formed such that the protruding end on the central axis C side of the collar member 12 is elastically deformable in the length direction of the collar member 12 with the position of the inner peripheral surface 12c of the collar member 12 as a support end (FIG. 5). (See arrow B in (b)).
- four lever pieces 23a having the same shape and size are provided, but the number is not limited.
- the seat portion 23 is provided with a grip 23b for gripping the insertion-side tip 11a of the pin 11.
- the grip 23b is formed so as to slightly rise from the seat portion 21 toward the opening 12b and surround the insertion-side tip 11a of the conical pin 11.
- the seat portion 23 is formed by a plurality of lever pieces 23a, and the grip 23b is formed at the projecting end of the lever piece 23a by slightly rising toward the opening 12b.
- the grip 23b of the lever piece 23a elastically deforms the conical insertion-side tip 11a from the periphery thereof by the elastic restoring action of the lever piece 23a elastically deformed by being pushed away by the insertion-side tip 11a of the pin 11 seated on the seat portion 23. It is designed to be crimped and gripped.
- a positioning groove 12d is formed in the collar member 12 at a position on the back side of the cored metal member 5.
- the positioning groove 12d is formed between the sheet portion 23 of the collar member 12 and the opening 12b in a lateral direction crossing the length direction of the collar member 12.
- the positioning groove 12d is formed so as to appear over substantially half of the outer peripheral surface of the collar member 12, as shown in FIG.
- the positioning groove 12d has a groove width dimension (dimension in a direction along the length direction of the collar member 12) G which is the same as or larger than the outer diameter dimension of the shaft-shaped spring material 14 described later. Is set to Specifically, for example, the outer diameter (diameter) of the spring material 14 is 2 mm, and the groove width G is 2.9 mm.
- the positioning groove 12d is formed integrally with the resin member as a matter of course. Even if the collar member 12 is made of another material, the groove 12d is formed integrally with the collar member 12.
- the dimension of G is formed with high precision.
- a shaft-shaped spring material 14 is inserted through the positioning groove 12d.
- the spring member 14 has a base end 14a bent in an R shape so as to define a surface at one end in the length direction, and is formed by being slightly bent at the other end in the length direction. It has an insertion end 14b, and has a straight portion 14c between the insertion end 14b and the base end 14a.
- the spring member 14 When assuming a flat surface, the spring member 14 does not twist the shaft of the spring member 14 so that the entire spring member 14 lays flat on the flat surface from the base end 14a to the insertion end 14b via the straight portion 14c. Is molded.
- the spring member 14 extends outward from the collar member 12 through the positioning groove 12 d from the lateral direction where the insertion end 14 b intersects the length direction of the collar member 12, and the surface on the back side of the metal core member 5.
- the base end 14a is in contact with the back surface 5a of the metal core member 5 which is outside the collar member 12.
- the straight portion 14c of the spring member 14 is elastically deformable at both ends by the base end 14a and the insertion end 14b abutting on the metal core member 5, and is installed in a state of being inserted into the positioning groove 12d.
- the spring member 14 When the pin 11 is inserted into the collar member 12 and the insertion-side tip 11a is seated on the seat portion 23, the spring member 14 is inserted from the outside of the collar member 12 into the positioning groove 12d so as to be freely inserted and removed.
- the spring member 14 is elastically engaged and disengaged with the locking groove 11b of the pin 11 so as to press the pin 11 between the pin member 11 and the seat portion 23, thereby holding the pin 11 on the collar member 12. I do.
- the spring member 14 may be arranged in the positioning groove 12d before the pin 11 is inserted into the collar member 12.
- the back side of the cored bar member 5 is formed so as to sandwich the spring member 14 from the flange 12 a side of the collar member 12 and the seat portion 23 side in the length direction (Z-axis direction) of the collar member 12. Is done.
- the spring material 14 is locked in the locking groove 11 b of the pin 11, the elastic biasing force of the horn spring 15 abuts against the back side of the metal core member 5 on the flange portion 12 a side, and the core on the sheet portion 23 side. It is preferable that a gap D1 is held between the metal member 5 and the back side thereof.
- the groove width of the locking groove portion 11b of the pin 11 may be set to be larger than the outer diameter dimension of the spring material 14.
- the spring material 14 is set to abut on the sheet portion 23 side of the locking groove 11b, and a gap D2 is formed on the flange 12a side of the locking groove 11b. Is preferred.
- the pins 11 are set on the airbag module 2 side.
- the horn spring 15 is installed so as to surround the pin 11. While the horn spring 15 is in contact with the flange 12 a of the collar member 12, the insertion-side tip 11 a of the pin 11 of the damper unit 10 mounted on the airbag module 2 is inserted into the opening 12 b of the collar member 12.
- the pin 11 is inserted toward the seat portion 23 of the collar member 12 while compressing the horn spring 15, and the insertion-side tip 11 a is seated on the seat portion 23.
- the spring material 14 previously inserted into the positioning groove 12d so as to protrude inward of the collar member 12 becomes a conical insertion-side tip with the insertion of the pin 11 into the collar member 12. It is pressed along the inclined portion of 11a and is elastically deformed toward the outside of the positioning groove 12d.
- the spring material 14 is elastically restored and is fitted and locked in the locking groove 11b of the pin 11, whereby the pin 11 is installed inside the collar member 12 ( This is an assembly method called "snap-in."
- the spring member 14 is inserted through the positioning groove 12 d on the back side of the cored metal member 5 and locked in the locking groove 11 b.
- the pin 11 has the insertion-side tip 11 a held by the sheet portion 23 along the length direction of the collar member 12, and the locking groove portion 11 b is held by the locking of the spring material 14.
- the pin 11 is urged by the horn spring 15 toward the airbag module 2 in the length direction (Z-axis direction) of the pin 11 via the damper unit 10, and at the same time, the elastic material of the horn spring 15 is Therefore, the pin 11 can be held against the collar member 12 in the stationary state without rattling. Moreover, even if vibration is applied by vibration transmission between the cored bar member 5 and the airbag module 2, the spring member 14 and the horn spring 15 cause the pin 11 to move in the length direction (Z-axis direction) of the collar member 12. Vibration (movement) can be suppressed.
- the groove width G of the positioning groove 12d can be adjusted to the outer diameter of the spring material 14 with high dimensional accuracy by integral formation by resin molding or the like, the spring material 14 that locks the locking groove 11b is used for positioning. Movement in the groove 12d is restricted.
- the pin 11 Since the spring member 14 is elastically deformable, the pin 11 is allowed to slightly move in the length direction of the collar member 12, and it is possible to prevent the fixing strength from becoming too strong, and to secure good disassembling workability. can do.
- the seat portion 23 is constituted by the plurality of lever pieces 23a, the movement of the pin 11 can be elastically absorbed.
- the insertion-side tip 11a can be stably seated on the seat portion 23, and unnecessary movement of the pin 11 inside the collar member 12 can be achieved. Can be regulated.
- the mounting pin member 11 can be mounted and fixed to the cored bar member 5 without rattling, abnormal noise can be prevented and durability can be improved.
- accurate vibration transmission to the damper unit 10 and the airbag module 2 via the mounting pin member 11 can be secured, and the vibration damping effect of the steering wheel 1 can be remarkably improved.
- the spring material 14 may be detached from the locking groove 11b by utilizing the elasticity of the spring material 14 and pulled out from the positioning groove 12d. After the spring member 14 is removed, the pin 11 is pulled out from the collar member 12 by simply pulling the airbag module 2 away from the cored bar member 5 to complete the disassembling operation.
- the component configuration includes an opening 12b, a seat portion 23, and a positioning groove portion 12d, and a collar member 12 that can be molded so as to integrate them integrally, for example, a collar member 12 made of a synthetic resin that can be molded with resin, and a pin.
- 11 and the spring material 14 that locks into the locking groove 11b is very simple. The mounting and disassembling operation is simply performed by inserting and removing the pin 11 from the collar member 12.
- the spring member 14 can be attached to and detached from the positioning groove 12d, so that excellent mounting workability and disassembly workability can be secured.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
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- Transportation (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Air Bags (AREA)
- Steering Controls (AREA)
Abstract
Description
2 エアバッグモジュール
5 芯金部材
10 ダンパユニット
11 取付用ピン部材(ピン)
11a 挿入側先端
11b 係止溝部
12 カラー部材
12b 開口
12c 内周面
12d 位置決め用溝部
14 バネ材
23 シート部
23a レバー片
23b グリップ
Claims (4)
- ステアリングホイールとダンパマスになるエアバッグモジュールとの間に、該ステアリングホイールの振動をダンピングするダンパユニットを組み込むために、該ダンパユニットの取付用ピン部材を、該ステアリングホイールまたは該エアバッグモジュールのいずれかの支持部に取付固定する構造であって、
上記取付用ピン部材が挿入される開口を長さ方向一端に有する中空筒状に形成され、上記支持部に固定して設けられるカラー部材と、
該カラー部材の長さ方向他端に設けられ、上記取付用ピン部材の挿入側先端が着座されるシート部と、
上記カラー部材に、上記シート部と上記開口との間に位置させて、長さ方向と交差する向きに形成された位置決め用溝部と、
上記取付用ピン部材に形成され、上記挿入側先端が上記シート部に着座されたときに上記位置決め用溝部に位置される係止溝部と、
上記支持部に、上記位置決め用溝部に挿通して設けられ、上記挿入側先端が上記シート部に着座されたときに上記係止溝部に弾性的に係止されて上記取付用ピン部材を保持するバネ材とを備えたことを特徴とするステアリングホイールにおけるダンパユニットの取付固定構造。 - 前記シート部は、中空筒状の前記カラー部材の内周面から片持ち梁状に突設される複数のレバー片から構成されることを特徴とする請求項1に記載のステアリングホイールにおけるダンパユニットの取付固定構造。
- 前記シート部は、前記取付用ピン部材の前記挿入側先端を把持するグリップを備えることを特徴とする請求項1または2に記載のステアリングホイールにおけるダンパユニットの取付固定構造。
- 請求項1~3いずれかの項に記載のステアリングホイールにおけるダンパユニットの取付固定構造を備えたことを特徴とするステアリングホイール。
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JP2020527263A JP6968279B2 (ja) | 2018-06-25 | 2019-05-14 | ステアリングホイールにおけるダンパユニットの取付固定構造及びステアリングホイール |
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