JP2017065332A - Automotive component - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a steering wheel that facilitates attachment and detachment of a module.SOLUTION: A hook 37 is provided at one of a module 11 and a boss portion 72 of a steering wheel body 12. A wire 45 is disposed at the other of the module 11 and the boss portion 72. The wire 45 includes: holding portions 94, 94 biased in a direction intersecting a direction of attachment of the module 11; and a protruding portion 95 that moves in a predetermined direction relative to the hook 37, thus moving the holding portions 94, 94 against the bias. At one of the boss portion 72 and the module 11, there is provided a guide portion 115 for guiding a disengagement jig J having a hook portion J2 at the tip, toward the protruding portion 95. At one of the boss portion 72 and the module 11, there is provided a fulcrum portion 117 serving as a fulcrum around which the disengagement jig J guided by the guide portion 115 is rotated in a direction where the hook portion J2 at the tip engages with the protruding portion 95.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an automobile part including a module such as an airbag device attached to a part body.

  2. Description of the Related Art Conventionally, as a steering wheel of an automobile, that is, a steering wheel, a folded airbag is provided on a boss portion (boss core) that is a support portion constituting the steering wheel body, an inflator that supplies gas to the airbag, and the airbag and the inflator. And a base plate to which an air bag and an inflator are attached and a module such as an air bag apparatus including a cover body connected to the base plate and covering the air bag and the inflator are known.

  As such an airbag device, a snap lock spring (wire) that is a U-shaped engagement member is disposed on the module case body or the boss portion of the steering wheel body, and the boss portion of the steering wheel body, Or the structure which attaches a module to a boss | hub part by one-touch by hooking the hook provided in the base plate of the case body of a module to a snap lock spring is known.

  In this configuration, in order to remove the module from the boss portion, the snap lock spring is deformed against the bias. As such a detaching structure, for example, a configuration in which a snap lock spring disposed on a case body of a module is deformed and removed by a manual tool (see, for example, Patent Document 1), a hole is formed in a lower cover that covers the back side of the boss portion. Opening and pushing the front end side of the pushing jig inserted into the hole along the guide surface continuous to the hole, thereby removing the snap lock spring provided on the boss by pushing and deforming it (for example, , Or refer to Patent Document 2), or by opening a hole in the lower cover that covers the back side of the boss, and pressing the snap lock spring by rotating the tip of the pushing jig inserted into the hole A structure (for example, refer to Patent Document 3) to be removed by deforming is known.

Japanese Patent No. 3566693 (Page 6, FIGS. 2a to 2c) JP 2013-209909 A (page 8-10, FIG. 12-14) Japanese Patent Laying-Open No. 2015-20455 (Page 4, FIG. 4)

  However, in each of the configurations described in the above-mentioned patent documents, the snap lock spring is pressed and deformed by a jig or the like, so that the module removal work depends on the touch of the operator. doing.

  This invention is made in view of such a point, and it aims at providing the motor vehicle component which can attach or detach a module easily.

  The automobile component according to claim 1 is a component main body, a module attached to the component main body, an engaging portion provided on one of the component main body and the module, and an attachment direction of the module with respect to the component main body. A holding portion that holds the engaging portion by being urged in an intersecting direction and is engaged with the engaging portion, and the engaging portion in a state in which the holding portion is engaged with the engaging portion. An engagement member disposed on the other of the component main body and the module, the component being disengaged by moving the holding portion against urging by moving in a predetermined direction with respect to the component, and the component A guide portion that is provided on either the main body or the module and guides an engagement releasing jig having a hook portion on the distal end side to the engaged release portion; and on either the component main body or the module The guide part provided More guided disengagement jig, in which the hook portion on the distal end side equipped with said fulcrum portion as a fulcrum for rotating in a direction to engage the engaged releasing unit.

  The automobile part according to claim 2 is the automobile part according to claim 1, wherein the engaged release part is a protruding part that protrudes from the engaging part in a state where the holding part is engaged with the engaging part. There is something.

  The automobile part according to claim 3 is the automobile part according to claim 1 or 2, wherein the part body is a hub portion of the handle body of the handle.

  According to a fourth aspect of the present invention, there is provided the automobile component according to the third aspect, further comprising a cover body that covers at least a part of the hub portion, and the cover body is inserted with a disengaging jig at a position corresponding to the guide portion. It has an opening for use.

  The automobile part according to claim 5 is the automobile part according to claim 4, wherein the opening is formed in a longitudinal shape along a direction intersecting the opening direction.

  According to the first aspect of the present invention, when the module is attached to the component main body, the engaging member is engaged with the engaging portion by pushing the module toward the component main body. On the other hand, it can be easily attached with one touch. Further, when removing the module from the component body, the engagement release jig in which the hook portion is guided to the engagement release portion of the engagement member by the guide portion is rotated around the fulcrum portion as the fulcrum, so that the hook portion is covered. By engaging with the disengagement part and pulling, for example, the engagement member can be operated with better workability and with a lower load than the structure in which the disengagement jig is pressed against the engagement member to release the engagement. The engagement of the engagement portion can be easily released. As a result, the module can be easily attached to and detached from the component main body. Since the guide portion and the fulcrum portion are provided in either the module or the component main body, the configuration is not complicated and the number of components does not increase. Therefore, the manufacturing cost can be reduced.

  According to the automobile part of the second aspect, in addition to the effect of the automobile part of the first aspect, the disengaged part protrudes from the engaging part with the holding part engaged with the engaging part. By setting it as the protrusion part which performs, the hook part by the side of the front-end | tip of an engagement cancellation | release jig | tool can be engaged more easily.

  According to the third aspect of the present invention, in addition to the effect of the first or second aspect, the module can be easily attached to and detached from the hub portion of the handle body by using the component body as the hub portion of the handle body. Can provide a handle.

  According to the automobile part of claim 4, in addition to the effect of the automobile part of claim 3, by covering at least a part of the hub part with the cover body, intrusion of foreign matter into the module and the hub part can be suppressed. Since the appearance is good and the opening is provided at a position corresponding to the guide part of the cover body, the engagement releasing jig can be more reliably inserted into the guide part through the opening. Workability when removing modules is improved.

  According to the automobile part of claim 5, in addition to the effect of the automobile part of claim 4, the opening is made longitudinal along the direction intersecting the opening direction. While ensuring the range to rotate, the appearance of a foreign object from an opening part can be suppressed more reliably, improving appearance with a longitudinal opening part.

It is a perspective view which shows the engagement releasing operation | work of the engaging member of one Embodiment of the automotive component of this invention. It is a perspective view which shows the state following FIG. 1 of the disengagement operation | work of a motor vehicle part same as the above. It is a perspective view which shows the state following FIG. 2 of the disengagement operation | work of a motor vehicle part same as the above. It is a top view which shows typically the disengagement operation | work of a motor vehicle part same as the above in order of (a) (b). It is a perspective view which shows a part of automotive component same as the above from back. It is a perspective view which shows a part of automotive component same as the above from the front. (A) is sectional drawing which shows a part of automotive component same as the above, (b) is explanatory drawing which shows typically action directions, such as urging | biasing force of the engaging member seen from the same direction as (a). (A) is a top view which shows the engagement state of an engaging part and an engaging member, (b) is sectional drawing of (a), (c) is the latching state of a latching | locking part and a latching receiving part. FIG. It is a disassembled perspective view of a motor vehicle part same as the above. It is a front view which shows a motor vehicle part same as the above.

  Hereinafter, an embodiment of an automobile part of the present invention will be described with reference to the drawings.

  9 and 10, reference numeral 10 denotes a steering wheel which is a handle as an automobile part. This steering wheel 10 is arranged in front of an occupant in the driver's seat of the automobile, and the module 11 is mounted on the occupant side. A steering wheel body 12 as a handle body, a cover body 13 as a covering member attached to the opposite side of the steering wheel body 12, that is, the opposite side of the module 11, and the occupant side of the steering wheel body 12. It is composed of a finisher (garnish) 14 as a decorative member.

  The steering wheel 10 is usually mounted on a steering shaft as a steering device (not shown) provided in a state inclined with respect to the horizontal direction (vertical direction). The front side or rear side (arrow R side shown in FIG. 1 or the like), the steering shaft side is the vehicle body side, the rear side or the front side (arrow F side shown in FIG. 1 or the like), and the longitudinal direction along this steering shaft is the axial direction In addition, directions such as the front-rear direction (arrow F, R direction) and the vertical direction (arrow U, D direction) will be described with reference to the straight traveling direction of the vehicle body on which the steering wheel 10 is provided.

  In the present embodiment, the module 11 includes a base plate 21 that is an attachment member as a storage body, and a case 24 that stores a folded airbag 23 that includes an airbag cover 22 as a covering body. An airbag device (airbag module) including an inflator 25, a retainer 26, and the like.

  The base plate 21 is also called a back plate or a back holder, and also serves as a horn plate of a horn device (not shown), and is integrally injection-molded with, for example, a synthetic resin. The base plate 21 includes a substrate portion 31 that is an attachment surface portion as a case main body, and a peripheral wall portion 32 raised to the front side over the entire peripheral portion on the surface side of the substrate portion 31. .

  A circular hole-shaped inflator mounting hole 34 is opened at the substantially central portion of the substrate portion 31, and four mounting holes 35 (only two are shown) are opened around the inflator mounting hole 34. Yes. In addition, a pair of columnar (cylindrical) hooks 37 as projecting portions are provided on the back side of the base plate 31 as an engaging portion for attaching the module 11 to the steering wheel main body 12 so as to be able to advance and retreat. Further, a locking portion 38 for attaching the module 11 to the steering wheel main body 12 so as to be able to advance and retreat is provided on the base plate portion 31 so as to protrude from the back surface side. Further, a conductive conductive plate (not shown) for setting a movable contact that is one contact is attached to the substrate portion 31 by being integrally molded and embedded.

  The hook 37 detachably locks the module 11 and the steering wheel main body 12, positions the module 11 with respect to the steering wheel main body 12, and guides the module 11 along the front-rear direction. These hooks 37 are provided with a concave portion 41 which is a constricted hook portion on the distal end side, and a surface on the distal end side of the concave portion 41 serves as a locking surface 42 (FIG. 8B). The tip portion of the hook 37 is formed in a conical shape so as to gradually become narrower (reduce the diameter) toward the tip side. These hooks 37 are inserted into the insertion opening 44 as a hole of the steering wheel body 12 described later, and the engagement member is attached so that a part of the hook 37 is exposed to the insertion opening 44. The wire 45 is elastically locked and held at the position of the locking surface 42 (recessed portion 41), and is movable along the front-rear direction with respect to the insertion opening 44 (FIG. 8B). In the present embodiment, the hook 37 is connected to the left and right sides of the upper part of the base plate 21 (substrate part 31) of the module 11, that is, the 9 o'clock direction and the 3 o'clock direction of the steering wheel 10 in the neutral state (neutral state). Located apart. Further, around the base end side of the hook 37, one end portion of a horn spring 46 (coil spring as an urging means for urging the module 11 rearward (occupant side) with respect to the steering wheel body 12 ( The rear end) is held.

  The locking portion 38 is locked in a locking receiving portion 47 provided on the steering wheel main body 12 side, which will be described later, thereby locking in the front-rear direction, which is the insertion direction of the hook 37 to the insertion opening 44. Specifically, it is locked to prevent it from coming off in the front direction so as to suppress the rattling of the module 11 with respect to the steering wheel body 12 and to improve the operability when operating the horn device by operating the module 11 It has become. The locking portion 38 is formed in a loop shape (U shape) with respect to the substrate portion 31, and protrudes forward from the substrate portion 31, that is, on the back side. And this latching | locking part 38 is located in the center lower part of the left-right direction of the base plate 21 (board | substrate part 31) of the module 11, ie, the 6 o'clock direction in the steering wheel 10 of a neutral state (neutral state).

  The movable contact faces a fixed contact 48 which is another contact of the horn device arranged on the steering wheel main body 12 side which will be described later, and constitutes a horn switch which is a switch of the horn device together with these fixed contacts 48.

  The peripheral wall portion 32 surrounds the folded airbag 23 and is positioned in a direction along the protruding direction of the airbag 23. A plurality of engaging portions 51 for engaging and holding the airbag cover 22 are provided across the substrate portion 31 outside the peripheral wall portion 32. In the present embodiment, the engaging portion 51 has a hook shape, but may be, for example, an opening, or may have both a hook shape and an opening.

  On the other hand, the airbag cover 22 is integrally formed of an insulating synthetic resin, and covers a front plate portion 53 as a cover body that covers a part of the front side of the steering wheel 10, and a rear side of the front plate portion 53. And a mounting plate portion 54 as a mounting wall portion projecting downward in a rectangular tube shape from the front side.

  On the front surface that is the back surface of the front plate portion 53, a tear line that is a groove-shaped portion (weak portion) (not shown) in a groove shape with a small thickness is provided at a position surrounded by the mounting plate portion 54, for example, approximately H in front view. When the airbag is inflated, it is configured to be cleaved and deployed along the tear line by the deployment pressure of the airbag.

  The mounting plate portion 54 is located outside the peripheral wall portion 32 of the base plate 21, and is formed along the outer shape of the peripheral wall portion 32. Further, the mounting plate portion 54 is provided with a locking opening 55 that engages with the engaging portion 51 of the base plate 21.

  The airbag 23 is formed in a flat bag shape by, for example, a single or a plurality of base fabrics, and similarly to the base plate portion 31 of the base plate 21, a circular inflator mounting hole 56 and the inflator mounting hole Four mounting holes 57 (only three are shown) provided so as to surround 56 are formed.

  The inflator 25 includes a disc-shaped inflator main body 61 and a flange 62 projecting outward from the inflator main body 61. The inflator body 61 is provided with gas injection ports (not shown), and the flange 62 is provided with four attachment holes 64 (only three are shown). Further, a contact portion (not shown) is provided at the bottom of the inflator main body 61. A wire harness is connected to the contact portion via a connector (not shown), and the inflator 25 is electrically connected to the control device via the wire harness.

  The retainer 26 has a ring shape and includes a retainer base 66 formed of a metal plate or the like, and four mounting bolts 67 (only three are shown) fixed to the retainer base 66. The retainer base 66 is formed with a circular inflator mounting hole 68 at the center. The mounting bolt 67 projects from the back side so as to surround the inflator mounting hole 68, and a nut (not shown) is screwed thereto.

  Then, the retainer 26 is inserted inside the airbag 23, and the airbag 23 is folded into a predetermined shape in a state where the mounting bolt 67 of the retainer 26 is pulled out from the mounting hole 57. Further, the airbag cover 22 is covered with the folded airbag 23, and the locking opening 55 of the mounting plate portion 54 of the airbag cover 22 is aligned with the engaging portion 51 of the peripheral wall portion 32 of the base plate 21, By inserting the mounting bolt 67 of the retainer 26 into the mounting hole 35 and pushing it into the base plate 21 side, the locking opening 55 is inserted and locked with the engaging portion 51, and the airbag cover 22 and the base plate 21 are touched together. (Snap-in).

  Further, the inflator 25 is combined from the back side of the base plate 21 while the mounting hole 64 is inserted into the mounting bolt 67 protruding to the back side of the base plate 21, and a nut is screwed onto the mounting bolt 67 and tightened. In this state, a part on the front side of the inflator main body 61 provided with the gas injection port of the inflator 25 is inserted into the airbag 23 from the inflator attachment hole 34 to constitute the module 11.

  On the other hand, the steering wheel body 12 includes an annular rim portion (ring portion) 71, a boss portion (mount portion) 72 that is a hub portion as a component body located inside the rim portion 71, and these rim portions. It is composed of a plurality of, for example, three spoke portions 73 in this embodiment that connect 71 and the boss portion 72. 1 to 8 show only one of the left and right sides of the steering wheel body 12.

  The steering wheel main body 12 includes a metal core 75 and a soft covering portion 76 (FIG. 10) that integrally covers a part of the core 75, and the back side of the core 75 is covered. Covered by body 13.

  The cored bar 75 corresponds to the rim part 71, the boss part 72, and the two spoke parts 73, the rim cored bar 81, the boss cored bar 82 that is a component main body attaching part (hub cored bar) as a support part, and the connection A spoke cored bar 83 is provided as a part, and is formed substantially symmetrically as a whole. The remaining one spoke portion 73 is constituted by, for example, the finisher 14.

  The boss mandrel 82 is also called a boss plate or a hub core, and has a cylindrical boss 85 fitted to the steering shaft integrally at the center. Further, the boss core 82 is provided with the insertion opening 44 and the fixed contact 48 constituting the horn switch device. Further, a protruding receiving portion 86 provided with a part of the locking receiving portion 47 and the fixed contact 48 is provided in a lower portion of the boss core 82 in a loop shape (U shape).

  Each insertion opening 44 has a position corresponding to the hook 37, that is, a position separated from the left and right sides of the top of the boss core metal 82 (positions near the base end of the spoke core metal 83). It is provided penetrating in the front-rear direction, which is the thickness direction. These insertion openings 44 are round holes. The tip end side of the hook 37 is inserted into the insertion opening 44.

  Each wire 45 can also be called a one-touch wire, and is formed of a wire material (piano wire) such as an elastically deformable metal. In the present embodiment, the wire 45 is a torsion coil spring. As shown in FIG. 8A, the wire main body 91 as an engaging member main body wound in a coil shape, A first arm 92 extending linearly along the tangential direction and a second arm 93 extending linearly from the wire body 91 along the tangential direction that forms an acute angle with the first arm 92 are provided. The second arm 93 is engaged with the concave portion 41 of the hook 37 of the module 11 to bend (V-shaped) holding portions 94, 94 for locking the hook 37, and between the holding portions 94, 94. A projecting portion 95 as a continuous disengaged portion for detachment operation and a continuous sliding guide portion 96 on the front end side of one holding portion 94 are integrally provided. The wire 45 changes the angle between the first arm 92 and the second arm 93 from the natural state (no load state) by changing the angle between the first arm 92 and the second arm 93 to the natural state. An urging load is generated so that it can be restored. Since the left and right wires 45 are arranged symmetrically with each other, only one wire 45 will be described, and the description of the other wire 45 will be omitted.

  As shown in FIGS. 5 and 6, each wire 45 has a wire main body 91 held by a circular hole-shaped first holding portion 97 provided on a boss core 82 (boss portion 72), and a first arm 92. Is held in a groove part 98 provided in the boss core 82 (boss part 72) continuously to the first holding part 97, and (first and second) holding piece parts protruding into the groove part 98. It is pressed from the front and back by 99,100. The second arm 93 is basically disposed on the flat surface portion 101 formed on the back surface side of the boss core 82 (boss portion 72), and at the position on the wire body 91 side, the boss core 82 (boss portion). 72) is pressed from the rear by the second holding portion (arm pressing portion) 102 protruding from the protruding portion 95, and at the position of the protruding portion 95, the protruding portion pressing portion 103 (protruding from the boss core metal 82 (boss portion 72)) 5), the sliding guide portion 96 is inserted into the hook holding portion 104 (FIG. 6) opened in a slit shape on the boss core 82 (boss portion 72) and is hooked and held. Yes. Further, the first arm 92 includes a (first) rib 107 (FIG. 5) as a (first) support convex portion and a (second) rib 108 (FIG. 6) as a (second) support convex portion. The second arm 93 is supported from the front and back by a (third) rib 109 (FIG. 5) as a (third) support convex portion (fourth) as a (fourth) support convex portion. It is supported by a rib 110 (FIG. 5) and a (fifth) rib 111 (FIG. 6) as a (fifth) support projection. As a result, the holding portions 94 and 94 are positioned to face the insertion opening 44, respectively, and the protrusion 95 extends outward from the insertion opening 44 and is recessed in the boss core 82 (boss portion 72). It faces the guide part 115.

  The holding portions 94, 94 protrude in directions that intersect the longitudinal direction of the second arm 93. These holding portions 94, 94 are arranged at positions separated from each other, and are continuous via the protruding portion 95.

  The projecting portion 95 is formed in an arc shape on the tip side, and projects outward from the hook 37 in a state where the holding portions 94 and 94 are engaged with the recess 41 (the engaging surface 42) of the hook 37. Part.

  The sliding guide portion 96 is continuous with the holding portion 94 on the distal end side and extends linearly along the longitudinal direction of the second arm 93. The sliding guide portion 96 is not an essential configuration.

  The first holding portion 97 is provided in a circular shape so as to pass through the boss core 82 (boss portion 72) in the front-rear direction at a position on one side, that is, outside the insertion opening 44.

  The groove part 98 is provided continuously toward the upper side with respect to the first holding part 97.

  The holding piece 99 is located on the rear side (front side) with respect to the groove 98 (the wire 45 (first arm 92)) and faces the first holding portion 97 which is the base end side of the groove 98. In this manner, it protrudes in the shape of a tongue along the direction (left-right direction) intersecting the groove 98.

  The holding piece portion 100 is located on the front side in the groove portion 98 and is disposed on the front side with respect to the wire 45 (first arm 92), and protrudes in the form of a tongue piece on the tip side of the groove portion 98.

  The flat surface portion 101 is formed in a flat shape along the left-right direction that is the axial direction of the steering shaft. The insertion opening 44, the first holding part 97 and the groove part 98 are opened in the flat part 101.

  The second holding part 102 is provided on the insertion opening 44 side with respect to the first holding part 97, that is, at a position between the first holding part 97 and the insertion opening 44. The second holding portion 102 is located in the vicinity of the insertion opening 44. The second holding portion 102 is located on the front side with respect to the insertion opening 44 and the second arm 93 of the wire 45 and is directed upward in a direction intersecting (orthogonal) with respect to the second arm 93. Projecting in the shape of a tongue. That is, the second holding part 102 is spaced forward from the flat part 101.

  The protrusion holding part 103 shown in FIG. 5 is located on the opposite side of the second holding part 102 with respect to the insertion opening 44 in the left-right direction. Further, the protruding portion pressing portion 103 is located on the front side of the second arm 93 (protruding portion 95) of the wire 45 and on the upper side of the insertion opening 44. That is, the projecting portion pressing portion 103 is spaced forward from the flat portion 101. The protruding portion pressing portion 103 protrudes in a tongue-like shape toward the outside of the steering wheel body 12 along the left-right direction.

  The hook holding portion 104 shown in FIG. 6 is formed along an arc centered on the central axis of the wire main body 91 of the wire 45. The hook holding portion 104 is located on the opposite side of the second holding portion 102 with respect to the insertion opening 44, and is located on the lower side of the protrusion holding portion 103 so as to face the side of the insertion opening 44. Yes. The hook holding portion 104 is located on the front side with respect to the insertion opening 44 and the flat portion 101.

  The rib 107 shown in FIG. 5 is formed in, for example, a hemispherical shape, protrudes on the rear side of the holding piece 99 and faces the groove 98.

  The rib 108 shown in FIG. 6 is formed in a hemispherical shape, for example, and protrudes from the rear side of the holding piece 100.

  The ribs 107 and 108 support the first arm 92 of the wire 45 in the form of dots.

  The rib 109 shown in FIG. 5 is provided on the flat surface portion 101 along the peripheral edge on the front side of the insertion opening 44, and is located on the rear side of the second arm 93 of the wire 45. For this reason, the rib 109 is formed in an arc shape. The rib 109 has a semicircular cross section, and linearly supports the positions of the holding portions 94 and 94 of the second arm 93 of the wire 45 and the protruding portion 95. For this reason, the rib 109 acts as a (first) friction reducing portion when the wire 45 is rotated when the module 11 described later is detached from the steering wheel body 12.

  The rib 110 is located on the opposite side of the second holding portion 102 with respect to the insertion opening 44 and is located below the protruding portion pressing portion 103. The rib 110 is located on the front side with respect to the insertion opening 44 and on the lower side with respect to the sliding guide portion 96 of the second arm 93 of the wire 45. The rib 110 has a semicircular cross section, and supports the lower part of the base end side of the sliding guide portion 96 of the second arm 93 of the wire 45 in a dot shape.

  The rib 111 shown in FIG. 6 is provided on the flat surface portion 101 along the hook holding portion 104 on the side opposite to the insertion opening 44 with respect to the hook holding portion 104. That is, the rib 110 is formed along an arc centered on the central axis of the wire body 91 of the wire 45. The rib 110 is located on the front side with respect to the wire 45. The rib 110 has a semicircular cross section, and linearly supports the sliding guide portion 96 of the second arm 93 of the wire 45. For this reason, the rib 110 acts as a (second) friction reducing portion when the wire 45 is rotated when the module 11 described later is detached from the steering wheel body 12.

  The guide portion 115 guides the disengagement jig J shown in FIGS. 1 to 3 to the position of the protruding portion 95 of the wire 45. The guide portion 115 is recessed in the flat portion 101 on the front side of the boss core 82 (boss portion 72) and on the rear side of the wire 45. Further, the guide portion 115 is provided along the left-right direction, that is, along the direction intersecting the protruding direction of the protruding portion 95 with respect to the holding portions 94, 94. The guide portion 115 is directed to the flat portion 101 from one side that is the base end side, that is, from the outside of the steering wheel body 12 to the other side that is the distal end side, that is, the inside of the steering wheel body 12 (center side in the left-right direction). It is recessed so as to be gradually recessed toward the rear side, that is, gradually deepen. In other words, the guide portion 115 is provided along a direction inclined rearward with respect to the plane portion 101 from the proximal end side to the distal end side with respect to the axial direction of the steering shaft. The inclination angle of the guide portion 115 with respect to the flat portion 101 is preferably set to 20 ° or more, for example. Further, the protruding portion 95 of the wire 45 is opposed to a position on the distal end side of the guide portion 115, that is, a position in the vicinity of the hole 118. One side of the guide portion 115 is provided with a fulcrum portion 117 that serves as a fulcrum when the disengagement jig J is rotated, and the other side of the guide portion 115 is a boss core 82 (boss portion 72). It becomes the hole part 118 which penetrates.

  The fulcrum part 117 is a step part (corner part) where the base end side of the guide part 115 and the flat part 101 are continuous.

  The hole 118 is located at the end of the guide 115 opposite to the fulcrum 117.

  As the disengagement jig J, an L-shaped one such as a hexagon wrench is used. That is, the disengagement jig J is provided along a long linear jig body J1 and a direction provided at the tip of the jig body J1 and intersecting (orthogonal) the jig body J1. An extending hook portion J2 is integrally provided. The length of the hook portion J2 is set to be larger than the cross-sectional diameter size of the wire 45 and smaller than the recess size on the other side (deepest portion) facing the protruding portion 95 of the wire 45. The engagement releasing jig J is inserted from an insertion port 119 as an opening provided in the cover body 13 (FIG. 9), and the hook portion J2 is guided to the protruding portion 95 by the guide portion 115. It is like that.

  The insertion port 119 is provided on both side portions of the cover body 13 shown in FIG. 9 which is a position facing one side (fulcrum portion 117) of the guide portion 115 (only one is shown). That is, the insertion port 119 is provided at a position facing the back side of the spoke portion 73 on both sides of the steering wheel body 12, and has a long hole shape along the front-rear direction. In other words, the insertion port 119 is formed in a longitudinal shape along a direction intersecting the opening direction.

  The latch receiving portion 47 protrudes in a claw-like shape downward from the boss core 82 (projection receiving portion 86) at a position corresponding to the latch portion 38, that is, at the center lower portion in the left-right direction of the boss core 82. Then, the locking portion 38 is locked in the front-rear direction, which is the insertion direction of the hook 37 into the insertion opening 44, and specifically, is prevented from coming off in the front direction (FIG. 8C).

  The fixed contact 48 is formed of a member such as a conductive metal, and is disposed to face the movable contact on the module 11 side.

  The cover body 13 is also called a body cover or a lower cover, and is formed of, for example, a synthetic resin, and is configured to cover the back side of the boss part 72 excluding the boss 85 and the back side of each spoke part 73. ing.

  When the steering wheel 10 is assembled, the cover body 13 is combined with the steering wheel body 12 from the back side and attached to the steering wheel body 12 while being positioned. Thereafter, the boss 85 of the steering wheel main body 12 is fitted to the steering shaft and fixed with a nut (not shown).

  With respect to this steering wheel main body 12, the module 11 is engaged with each engaging opening portion 44 and each hook 37 while pushing the engaging receiving portion 47 on the engaging portion 38, and pushes it from the front side. The holding portion 94 of the wire 45 located in the insertion opening 44 engages with the locking surface 42 of the concave portion 41 of the hook 37 (FIGS. 8B and 8C). As a result, the module 11 is engaged with the steering wheel main body 12 and supported to prevent the module 11 from coming off at three places on both sides and the lower side.

  Therefore, the position of the module 11 is regulated in the front-rear direction, the up-down direction, and the left-right direction relative to the steering wheel body 12, and each hook 37 is prevented from coming off in the front direction by the wire 45 (FIG. 8B). )), And the locking portion 38 is prevented from coming off in the front direction by the locking receiving portion 47 (FIG. 8C).

  Further, in this state, the steering wheel main body 12 is guided along the front-rear direction by the hooks 37.

  The steering wheel 10 including the module 11 is configured to be attached to the steering shaft by, for example, performing electrical wiring on a contact portion of the inflator 25 or the like.

  The steering wheel 10 configured as described above is operated when the occupant in the driver's seat holds the rim portion 71 and rotates. In addition, by pushing the airbag cover 22 of the module 11 that also serves as a pushing portion against the urging load of each horn spring 46, each hook 37 and each insertion opening 44 are fitted, The module 11 is guided relatively forward by the fitting of the locking portion 38 and the locking receiving portion 47 (FIGS. 8B and 8C), and any one of the movable contacts is a fixed contact. When it comes into contact with 48, the horn device on the vehicle body is blown.

  Further, in the event of a frontal collision of the vehicle, gas is rapidly injected from the inflator 25 into the airbag 23, and the airbag 23 folded and stored rapidly expands. Then, due to the inflation pressure of the airbag 23, the airbag cover 22 is cleaved along the tear line to form a projection port of the airbag 23, and the airbag 23 projects from the projection port and is inflated and deployed in front of the occupant. And restrain the occupant. At this time, the module 11 is held by the steering wheel body 12 against an impact when the airbag 23 is inflated and deployed, mainly because each hook 37 is locked by each wire 45.

  On the other hand, when removing the module 11 from the steering wheel main body 12, first, as shown in FIG. 1, when the engagement releasing jig J is inserted from the insertion port 119, the engagement releasing jig J is moved to the guide portion 115. The hook portion J2 is opposed to the protruding portion 95 facing the position on the distal end side of the guide portion 115 at a position where the hook portion J2 contacts the hole 118 on the distal end side of the guide portion 115. In this state, as shown by the solid line in FIG. 7A, the disengagement jig J has the jig main body J1 in contact with the fulcrum portion 117.

  Next, as shown by the solid line in FIG. 2 and the imaginary line in FIG. 7A, the disengagement jig J is engaged in the direction in which the hook part J2 is engaged with the protruding part 95 with the fulcrum part 117 as a fulcrum, that is, the hook part. The hook part J2 is easily inserted into the projecting part 95 by rotating it in the direction in which J2 approaches the projecting part 95 side, in other words, along the longitudinal direction of the insertion port 119, that is, like a lever. (A state shown in FIG. 4A).

  In this state, as shown in FIG. 3, by pulling the disengagement jig J from the insertion port 119 to the outside of the steering wheel body 12, the hook portion J2 pulls the protruding portion 95, and the wire 45 The second arm 93 resists urging in the direction approaching the first arm 92 fixed to the boss core 82 (boss portion 72) with the central axis of the wire body 91 as the center. (Fig. 4 (b)). At this time, the second arm 93 slides while the holding portions 94, 94 are in line contact with the rib 109, and the sliding guide portion 96 is slid in line contact with the rib 111 (FIG. 6). Is suppressed and can be rotated smoothly. As a result, the holding portions 94, 94 inserted into the concave portion 41 of the hook 37 of the module 11 are pulled out of the concave portion 41 and released, so that the hook 37 is disengaged by the wire 45 and the module 11 can be removed. It becomes.

  Thus, according to the present embodiment, when the module 11 is attached to the boss portion 72 (boss core metal 82) of the steering wheel main body 12, the module 11 is attached to the boss portion 72 (boss core metal of the steering wheel main body 12). 82) Since the wire 45 is engaged with the hook 37 by pushing in the side, the module 11 can be easily attached to the boss portion 72 (boss metal core 82) of the steering wheel body 12 with one touch. Further, when the module 11 is removed from the boss portion 72 (boss core 82) of the steering wheel body 12, the engagement releasing jig J in which the hook portion J2 is positioned on the protruding portion 95 of the wire 45 by the guide portion 115 is used. Compared with a configuration in which, for example, the disengagement jig J is pressed against the wire to release the engagement by rotating the fulcrum part 117 as a fulcrum and engaging the hook part J2 with the protruding part 95 and pulling. The hook 37 can be easily disengaged by the wire 45 with good workability and low load. As a result, the module 11 can be easily attached to and detached from the boss portion 72 (boss metal core 82) of the steering wheel body 12.

  Further, the guide part 115 and the fulcrum part 117 are provided on either the module 11 or the boss part 72 (boss metal core 82) of the steering wheel body 12, or in this embodiment, the boss part 72 (boss metal core 82). The configuration is not complicated and the number of parts does not increase. Therefore, the manufacturing cost can be reduced.

  Further, by pulling the hook portion J2 of the disengagement jig J hooked on the protruding portion 95, the hook portion J2 is rotated along the protruding portion 95, whereby the protruding portion 95 is pulled and the second arm 93 is pulled. Can be rotated.

  Further, the force required to rotate the wire 45 is the biasing force F1 by the wire 45 and the biasing force of the horn spring 46 as shown in FIG. The force Fs2 in a point-symmetrical direction with respect to the resultant force Fs1 with the fitting force F2 with respect to the boss portion 72 (boss metal core 82) of the steering wheel main body 12 of the module 11 is obtained. Therefore, the closer the pull angle of the disengagement jig J is in the same direction as the force Fs2, in other words, the smaller the angle difference between the pull direction of the disengagement jig J and the direction of the force Fs2, the more the wire 45 The second arm 93 can be easily rotated. Therefore, the engagement disengaging jig J can be pulled in a direction inclined with respect to the flat surface portion 101 (FIG. 7A) by contact with the guide portion 115 and the fulcrum portion 117. The angle difference between the direction of pulling the mating release jig J and the direction of the force Fs2 can be reduced, and the wire 45 can be pulled with a force F4 smaller than the force F3 required when pulling along the plane portion 101 (FIG. 7A). The second arm 93 can be rotated.

  Furthermore, the hooks on the front end side of the disengagement jig J are formed as projecting portions 95 that project with respect to the hooks 37 in a state in which the holding portions 94 and 94 are engaged with the hooks 37 as engaged portions. The part J2 can be engaged more easily.

  Moreover, since the projecting portion 95 is formed in an arc shape, even if the direction of pulling the hook portion J2 of the disengagement jig J hooked on the projecting portion 95 is various, the projecting portion 95 is formed inside the projecting portion 95. As the hook portion J2 rotates along, the second arm 93 can be rotated by reliably pulling the protruding portion 95.

  Furthermore, by using the boss part 72 (boss metal core 82) of the steering wheel main body 12 as the component main body, the steering wheel 10 can be easily attached to and detached from the boss part 72 (boss metal core 82) of the steering wheel main body 12. Can provide.

  Then, by covering at least a part of the boss portion 72 with the cover body 13, it is possible to suppress the intrusion of foreign matter into the module 11 and the boss portion 72, the appearance is good, and the guide portion 115 of the cover body 13 By providing the insertion port 119 in the corresponding position, the disengagement jig J can be more reliably inserted into the guide portion 115 via the insertion port 119, so workability when removing the module 11 is improved. Will be improved.

  Moreover, since the insertion port 119 has a longitudinal shape along the direction intersecting the opening direction, a range in which the engagement release jig J can be rotated like a lever can be secured, and the engagement release jig J Can be moved without hindrance, and the appearance of the elongated insertion port 119 is improved, and the foreign object from the insertion port 119 is also made longer than the insertion port 119 that is always open. Can be more reliably suppressed.

  In the above embodiment, the fulcrum portion 117 is provided at the position between the guide portion 115 and the insertion port 119, for example, separately from the guide portion 115, other than being provided at the end portion of the guide portion 115. It can also be provided.

  The module 11 (base plate 21) is provided with a hook 37 so that the insertion opening 44 and the wire 45 are disposed in the steering wheel body 12 (boss core 82). However, the module 11 (base plate 21) is inserted. The opening 44 and the wire 45 may be arranged so that the hook 37 protrudes from the steering wheel main body 12 (boss core metal 82).

  Further, the engagement disengagement portion of the wire 45 is not limited to the projection portion 95 having a protruding shape for detachment operation that is continuous between the bent holding portions 94, 94. Can be any shape that can be engaged.

  Further, as the module 11, for example, a pad body containing an impact absorber can be used instead of the airbag device.

  The module 11 is attached to the steering wheel body 12 to form the steering wheel 10. However, the module 11 can be applied not only to the steering wheel 10 but also to various other automobile parts.

  The present invention can be suitably used, for example, as an airbag device for a driver's seat of an automobile.

10 Steering wheels as automotive parts
11 modules
12 Steering wheel body that is the handle body
13 Cover body
37 Hook as engaging part
45 Wire as engaging member
72 Boss, which is the hub as the component body
94 Holding part
95 Protruding part as disengaged part
115 Guide section
117 fulcrum
119 Insertion hole as opening J Disengagement jig J2 Hook

Claims (5)

A component body;
A module to be attached to the component body,
An engaging portion provided on one of the component main body and the module;
A holding portion that holds the engaging portion by being urged in a direction intersecting the mounting direction of the module with respect to the component main body and engaged with the engaging portion, and the holding portion on the engaging portion An engaged release portion that moves the holding portion against biasing by moving in a predetermined direction with respect to the engaging portion in an engaged state; and on the other of the component main body and the module An disposed engaging member;
A guide portion that is provided in either the component main body or the module and guides an engagement release jig having a hook portion on the tip side to the engaged release portion;
An engagement release jig provided on either the component main body or the module and guided by the guide portion is rotated in a direction in which the hook portion on the tip side is engaged with the engaged release portion. An automobile part characterized by comprising a fulcrum part as a fulcrum. The automobile part according to claim 1, wherein the engaged release portion is a protruding portion that protrudes with respect to the engaging portion in a state where the holding portion is engaged with the engaging portion. The automobile part according to claim 1 or 2, wherein the part body is a hub part of a handle body of the handle. A cover body covering at least a part of the hub portion;
The automobile part according to claim 3, wherein the cover body has an opening for inserting an engagement releasing jig at a position corresponding to the guide portion. The automobile part according to claim 4, wherein the opening is formed in a longitudinal shape along a direction intersecting the opening direction.

Images