JP2015178284A - Steering wheel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a steering wheel capable of certainly positioning in a module to a steering wheel body while corresponding to the downsizing of the module.SOLUTION: An adjusting rib 58 protrusively provided on an outer peripheral surface 54 of one side part hook 37a of hooks 37 of a module 11 engaged with a wire 48 disposed on each opening portion 47 of a steering wheel body 12, contacts with an inner surface of one side part opening portion 47a to regulate a position of the one side part hook 37a at the one side part opening portion 47a. Adjusting pins 56 and 56 protrusively provided at position different from the adjusting rib 58 on an outer peripheral surface 54 of the one side part hook 37a elastically contact with the inner surface of the one side part opening portion 47a by the contact to the inner surface of the one side part opening portion 47a of the adjusting rib 58. Functions of supporting and positioning a module 11 to the steering wheel body 12 can be made intensive, so that the module 11 and the steering wheel body 12 can be certainly positioned while corresponding to the downsizing of the module 11.

Description

  The present invention relates to a handle provided with a plurality of engaging members that are respectively engaged with hooks inserted through a plurality of holes and hold the hooks to support a module with respect to the handle 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.

  And as such an airbag apparatus, snap lock springs (U-shaped engaging members respectively arranged at the three sides of the back side and the lower side of the through hole provided in the base plate of the case body of the module are provided. A configuration is known in which a plurality of hooks, which are engaging portions provided on a boss portion of a steering wheel body, are pushed into through holes and hooked on snap lock springs to attach the module to the boss portion with a single touch. ing.

  When the module is attached to the boss portion with one touch in this way, the module is positioned in the front-rear direction with respect to the boss portion by the engagement of the hook and the snap lock spring. Therefore, positioning pins (locating pins) for positioning in the vertical and horizontal directions are provided separately from the hooks (see, for example, Patent Document 1).

JP 2011-148478 A (Page 5-8, FIG. 2)

  In recent years, an airbag apparatus for a steering wheel has been miniaturized, and it has become difficult to secure a sufficient space for positioning pins.

  The present invention has been made in view of these points, and an object of the present invention is to provide a handle that can reliably position the module with respect to the handle body while corresponding to downsizing of the module.

  The handle according to claim 1, wherein the handle body, the module, a plurality of holes provided in any one of the handle body and the module, and a plurality of holes provided in the other of the handle body and the module, A hook that can be inserted into each hole, and a hook that is disposed in each hole, is urged in a predetermined direction intersecting the insertion direction of the hook into the hole, and is inserted into the hole. A plurality of engaging members for supporting the module on the handle by being engaged and holding the hook, wherein one hook projects from the outer surface and contacts the inner surface of the hole. And a positioning reference part that regulates the position of the one hook in the one hole part, and an inner surface of the hole part of the positioning reference part that protrudes from the outer surface at a position different from the positioning reference part. Contact with By those having a plurality of adjustment portions that elastically contacts the inner surface of the first hole.

  The handle according to claim 2 is the handle according to claim 1, wherein the sum of the urging loads on the plurality of hooks of the plurality of engaging members is substantially zero.

  The handle according to claim 3 is the handle according to claim 1 or 2, wherein the other hooks other than the one of the plurality of hooks are projected on the outer surface, and the positioning reference portion of the one hook is provided. A plurality of adjusting portions that elastically contact the inner surface of the remaining other hole portion by contact with the inner surface of the one hole portion are provided.

  According to the handle according to claim 1, the positioning reference portion protruding from the outer surface of one of the plurality of hooks inserted through the hole and held by the engaging member is the inner surface of the one hole. The position of one hook in this one hole is regulated by contacting the two, and a plurality of adjustment parts protruding from the positioning reference part on the outer surface of this one hook are provided on the positioning reference part. Since the inner surface of the one hole is elastically contacted by the contact with the inner surface of the one hole, the functions of the module support and positioning with respect to the handle body can be consolidated, and the module can be downsized. This module and the handle body can be positioned reliably.

  According to the handle of the second aspect, in addition to the effect of the handle of the first aspect, the sum of the urging loads of the plurality of engagement members with respect to the plurality of hooks is made substantially zero, thereby By adjusting the load, it is possible to more reliably position the module and the handle body while corresponding to downsizing of the module.

  According to the handle according to claim 3, in addition to the effect of the handle according to claim 1 or 2, a plurality of adjusting portions are provided on the outer surface of the remaining other hooks except for one of the plurality of hooks. Thus, the adjustment unit elastically contacts the inner surface of the remaining other hole part by contacting the inner surface of one hole part of the positioning reference part of one hook, so that the module can be securely attached to the handle body. Therefore, the module and the handle body can be more reliably positioned while accommodating the downsizing of the module.

1 shows a first embodiment of a handle of the present invention, (a) is a plan view showing a state in which a module of the handle is attached to the handle body from the back side, and (b) is a state of insertion into the opening of one hook. (C) is sectional drawing which shows the insertion state to the opening part of one other hook, (d) is sectional drawing which shows the insertion state to the opening part of the other other hook. (A) is a perspective view showing a part of one hook, (b) is a perspective view showing a part of another hook. (A) is a top view which shows the natural state of the engaging member of a handle same as the above, (b) is a top view which shows one engaging member in the state hold | maintained at the handle main body of the same handle, (c) is a handle same as the above. It is a top view which shows the other engaging member in the state hold | maintained at the handle | steering-wheel main body. (A) is a perspective view which shows a part of module from the back side, (b) is a perspective view which shows a part of handle body from the front side. It is a disassembled perspective view of the module of a handle same as the above. It is a disassembled perspective view of a handle same as the above. (A) is a front view showing the same handle, (b) is a side view showing the handle. It is explanatory drawing which shows typically arrangement | positioning of the wire of 2nd Embodiment of the handle | steering_wheel of this invention. It is explanatory drawing which shows typically arrangement | positioning of the wire of 3rd Embodiment of the handle | steering_wheel of this invention.

  Hereinafter, a first embodiment of a handle according to the present invention will be described with reference to the drawings.

  In FIG. 7A, reference numeral 10 denotes a steering wheel as a steering wheel. The steering wheel 10 is disposed in front of an occupant in a driver's seat of an automobile, and includes a module 11 and a handle body on which the module 11 is mounted on the occupant side. Steering wheel body 12 as a cover, a cover body (body cover) 13 as a covering member attached to the side opposite to the occupant of the steering wheel body 12, and a finisher (garnish) as a decorative member attached to the occupant side of the steering wheel body 12 14 and, for example, switch devices 15 and 15 for operation such as an in-vehicle audio device (not shown).

  The steering wheel 10 is usually mounted on a steering shaft as a steering device (not shown) provided in a state inclined at an angle θ1 with respect to the horizontal direction (vertical direction) (FIG. 7B). Hereinafter, the module 11 side is the occupant side, the front side or the rear side, the steering shaft side is the vehicle body side, the rear side or the front side, the front-rear direction along the steering shaft is the axial direction, and the steering wheel 10 includes The directions such as the front-rear direction and the up-down direction will be described with reference to the straight traveling direction of the vehicle body.

  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 (FIG. 5).

  The base plate 21 is also called a back plate or a back holder, and also serves as a horn plate of a horn mechanism, 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. (FIG. 4 (a) and FIG. 5).

  A circular hole-shaped inflator mounting hole 34 is opened at a substantially central portion of the substrate portion 31, and four mounting holes 35 are opened surrounding the inflator mounting hole 34. In addition, a plurality of columnar hooks 37 for attaching the module 11 to the steering wheel main body 12 so as to be able to advance and retreat are provided on the base plate portion 31 so as to protrude on the back side. Further, a conductive conductive plate 39 for setting the movable contact 38 is integrally attached to the substrate portion 31.

  The hook 37 detachably locks the module 11 and the steering wheel main body 12 and guides the module 11 with respect to the steering wheel main body 12 along the front-rear direction. These hooks 37 project from the base plate part 31 and have a cylindrical receiving part 42 that forms the base end side, and a cylindrical dimension that is smaller in diameter than the receiving part 42 and projects coaxially with the receiving part 42. The hook main body 43 and a conical insertion part 44 provided coaxially at the tip of the hook main body 43 are integrally provided. The hook 37 is inserted into an opening 47 as a hole of the steering wheel body 12 described later, and the hook main body 43 and the insertion portion 44 are inserted, and the hook 37 is an engagement member attached to each of the openings 47. The wire 48 is elastically locked and held. In the present embodiment, the hook 37 includes a pair of side hooks 37a and 37b which are first hooks (one and the other) located on both upper side portions, and a second central portion located on the lower center portion. The lower hook 37c, which is the hook of the above, is set.

  The receiving portion 42 holds one end portion (rear end portion) of a horn spring 51 that is a coil spring that urges the module 11 toward the rear (occupant side) with respect to the steering wheel body 12. A plurality of locking claws 52 for locking the spring 51 are provided in the radial direction.

  In the hook main body 43, the other end portion (front end portion) of the horn spring 51 is positioned around the receiving portion 42 side that is the base end side. Further, the hook main body 43 includes an insertion portion 44, and the front end side (front end side) of the horn spring 51 is inserted into the opening 47 of the steering wheel main body 12. The outer peripheral surface 54 of the hook main body 43, which is the outer surface of the hook 37, is separated from the inner surface of the opening 47, and a pair of latches to which the wire 48 is latched are attached to the outer peripheral surface 54. Concave portions 55 and 55 are provided adjacent to the proximal end of the insertion portion 44, and adjustment pins 56 and 56 as adjustment portions are provided facing the engaging concave portions 55 and 55 (FIG. 2). (A) and FIG. 2 (b)). On the other hand, in one side hook 37a, which is one of the hooks 37, in addition to the locking recesses 55 and 55 and the adjustment pins 56 and 56, an adjustment rib 58 as a positioning reference portion is provided on the hook body portion. The outer peripheral surface 54 of 43 is provided along the axial direction at a position different from the adjustment pins 56 and 56 (FIG. 2A). Therefore, in the hook 37, one side hook 37a is a positioning hook, and the other side hook 37b and a lower hook 37c are general hooks.

  The locking recesses 55, 55 are recessed in the direction perpendicular to the outer peripheral surface 54 of the hook main body 43. The locking recesses 55, 55 of each hook 37 are symmetrical with respect to both sides, that is, symmetrical with respect to the direction toward the center of gravity (center) of a virtual triangle T connecting the central axes of the hooks 37 when viewed in the front-rear direction. Is arranged. Accordingly, the locking recesses 55, 55 are located on one side of the upper part of the outer peripheral surface 54 of the hook body part 43 and on the other side of the lower part in the side hooks 37a, 37b, and It is located on both sides of the outer peripheral surface 54 of.

  The adjustment pins 56 and 56 adjust the position of each hook 37 with respect to each opening 47, and are arranged on the proximal end side of the hook main body 43 with respect to the respective locking recesses 55 and 55, and the distal end portion is locked. Located in the recesses 55,55. These adjustment pins 56 and 56 are formed in a tongue-like shape that can be elastically deformed in the axial direction (radial direction) of the hook main body 43 of the hook 37, and the outer peripheral surface of the hook main body 43 at the tip portion. Claw portions 56a and 56a projecting outward in the axial direction from 54 are provided. The adjustment pins 56 and 56 are such that the claw portions 56a and 56a can elastically contact (contact) the inner surface of the opening 47.

  The adjustment rib 58 is in contact with (in contact with) the inner surface of the opening 47 to restrict the position of one side hook 37a in the vertical and horizontal directions and to position the module 11 in the vertical and horizontal directions with respect to the steering wheel body 12. It projects from the outer peripheral surface 54 of the hook main body 43 of the one side hook 37a in the axial direction (radial direction) and extends in the axial direction, that is, along the insertion direction of the hook 37 into the opening 47. It has a longitudinal shape. For this reason, the adjusting rib 58 maintains contact with the inner surface of the opening 47 in a state where the module 11 is moved in the front-rear direction with respect to the steering wheel main body 12 by operating the horn device, for example. Yes. The length of the adjusting rib 58 in the longitudinal direction is set larger than the amount of protrusion from the outer peripheral surface 54 of the hook main body 43 in the axial direction. Further, the position of the adjusting rib 58 is, as viewed in the front-rear direction, in the hook main body 43 of one side hook 37a and the virtual triangle T (FIG. 1) with the central axis of the one side hook 37a. The imaginary line L1 connecting the center of gravity (center) and the outer peripheral surface 54 intersect with each other. That is, in one side hook 37a, the adjustment rib 58 is located on the opposite side of the adjustment pins 56 and 56 with respect to the virtual line L2 passing through the central axis and orthogonal to the virtual line L1.

  The insertion portion 44 is formed so as to be gradually reduced in diameter from the proximal end side, which is the hook main body 43 side, to the distal end side so that the hook 37 can be easily inserted into the opening 47.

  Each movable contact 38 faces a fixed contact 63 of a horn mechanism disposed on the steering wheel main body 12 described later, and constitutes a horn switch together with these fixed contacts 63. That is, the movable contact 38 is located on both sides and the lower part of the substrate part 31 of the base plate 21, respectively.

  The conductive plate 39 is formed in a plate shape from a conductive metal or the like. The conductive plate 39 may be fixed to the substrate portion 31 with a nail or the like, or may be insert-molded when the base plate 21 is formed and a portion excluding the movable contact 38 is embedded in the substrate portion 31. Good.

  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 hook portions 61 and a plurality of locking receiving portions 62 for engaging and holding the airbag cover 22 are provided outside the peripheral wall portion 32, respectively.

  On the other hand, the airbag cover 22 is integrally formed of an insulating synthetic resin, and a front plate part 64 as a cover body covering a part of the front side of the steering wheel, and a back side of the front plate part 64 A mounting plate portion 65 is provided as a mounting wall portion projecting downward in a rectangular tube shape from a certain front surface side.

  On the front surface, which is the back surface of the front plate portion 64, a tear line (not shown) that is a groove-shaped portion with a small thickness is formed in a substantially H-shape when viewed from the front, at a position surrounded by the mounting plate portion 65. 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 65 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 65 is provided with an insertion opening 67 into which the hook portion 61 of the base plate 21 is inserted and engaged, and a locking projection (not shown) engaged with each locking receiving portion 62, respectively. ing.

  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 substrate portion 31 of the base plate 21, a circular inflator mounting hole 71 and the inflator mounting hole Four mounting holes 72 are formed so as to surround 71.

  The inflator 25 includes a disc-shaped inflator main body 74 and a flange portion 75 projecting from the inflator main body 74 on the outer peripheral side. The inflator body 74 is provided with gas injection ports (not shown), and the flange 75 is provided with attachment holes 77 at four locations. Further, a contact portion (not shown) is provided at the bottom of the inflator main body 74. 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 81 formed of a metal plate and the like, and four mounting bolts 82 fixed to the retainer base 81. The retainer base 81 has a circular inflator mounting hole 83 formed in the center. In addition, the mounting bolts 82 project from the back side so as to surround the inflator mounting hole 83, and the nuts 84 are screwed into the mounting bolts 82, respectively.

  Then, the retainer 26 is inserted inside the airbag 23, and the airbag 23 is folded into a predetermined shape with the mounting bolt 82 of the retainer 26 being pulled out from the mounting hole 72. Further, the airbag 23 is covered with the folded airbag 23, and the insertion opening 67 and the locking protrusion of the mounting plate 65 of the airbag cover 22 are connected to the hook 61 and the locking portion of the peripheral wall 32 of the base plate 21. While aligning with the receiving portion 62, the hook portion 61 is pushed into the base plate 21 side while inserting the mounting bolt 82 of the retainer 26 into the mounting hole 35. The protrusion is inserted and locked in the locking receiving portion 62, and the airbag cover 22 and the base plate 21 are fixed to each other with one touch (snap-in).

  Further, the inflator 25 is combined from the back side of the base plate 21 while the mounting hole 77 is inserted into the mounting bolt 82 protruding to the back side of the base plate 21, and the nut 84 is screwed onto the mounting bolt 82 and tightened. In this state, a portion on the front side of the inflator main body 74 provided with the gas injection port of the inflator 25 is inserted into the airbag 23 from the inflator mounting hole 34 to constitute the module 11.

  On the other hand, the steering wheel main body 12 has an annular rim (ring part) 87, a boss part (mount part) 88 positioned inside the rim part 87, and the rim part 87 and the boss part 88 connected to each other. In this embodiment, for example, three spoke portions 89 are used (FIGS. 4B and 6).

  The steering wheel body 12 includes a metal core 91 and a soft covering portion 92 that integrally covers a part of the core 91, and the back side of the core 91 is covered by the cover body 13. It has been broken.

  The core 91 corresponds to the rim 87, the boss 88 and the spoke 89, and includes a rim core 95, a boss core 96 as a support, and a spoke core 97 as a connecting portion. It is formed symmetrically.

  The boss core metal 96 is also referred to as a boss plate or a hub core. The boss core metal body 102 integrally has a cylindrical boss 101 fitted to the steering shaft at the center, and the boss core metal body 102. Are connected to each of the spoke cores 97, and a fixed portion 104 is provided on the connection core 103.

  In the present embodiment, the connecting core metal 103 protrudes from both the upper side portion and the lower center portion of the boss core body 102. That is, the connection core metal 103 includes a pair of side connection metal cores 103a and 103b which are first connection metal cores (one and the other) positioned on both sides, and a second connection metal core positioned on the lower side. A lower connecting core metal 103c is set.

  The fixed portion 104 includes the opening 47, a wire holding portion 106 as an engaging member holding portion for holding the wire 48 disposed in the opening 47, and the fixed contact 63 constituting the horn switch device. Are provided. The fixing portion 104 includes a pair of side fixing portions 104a and 104b that are first fixing portions (one and the other) located on the pair of side connecting cores 103a and 103b, and a lower connecting core metal 103c. A lower fixing portion 104c, which is a second fixing portion located, is set.

  The opening 47 is provided through the boss core 96 in the front-rear direction, which is the thickness direction. In the side fixing portions 104a and 104b, the opening 47 is a pair of side openings 47a and 47b which are round hole-shaped (one and the other) first openings, and the lower fixing portion 104c. The lower opening 47c, which is a semicircular second opening having a circular arc, is formed on the lower side that does not face the side openings 47a and 47b. That is, at least a part of the inner surface of each opening 47 is formed along an arc. The side hooks 37a and 37b of the hook 37 are inserted into the side openings 47a and 47b, and the lower hook 37c of the hook 37 is inserted into the lower opening 47c.

  The wire 48 can be called a one-touch wire, and is formed of a wire (piano wire) such as an elastically deformable metal. In the present embodiment, the wire 48 is a torsion coil spring, and a wire body 111 as an engaging member body wound in a coil shape, and a first linearly extending from the wire body 111 along the tangential direction. 1 arm 112 and a second arm 113 extending linearly from the wire body 111 along a tangential direction that forms an obtuse angle with the first arm 112, and a hook 37 of the module 11 is provided on the distal end side of the first arm 112. The engaging portions 114, 114 that engage with the engaging recesses 55, 55 to engage the hook 37 and the detaching operation portion 115 for detaching operation that are continuous between the engaging portions 114, 114 are V-shaped (U And a held portion 116 that extends linearly on the extension of the first arm 112 is integrally provided (FIG. 3A). The wire 48 changes the angle between the first arm 112 and the second arm 113 from the natural state (no load state) by changing the angle between the first arm 112 and the second arm 113 to the natural state. An urging load is generated so that it can be restored. In the present embodiment, the wire 48 is a first wire (one and the other) attached to the side openings 47a and 47b, the side wires 48a and 48b, and a position different from the side wires 48a and 48b. A lower wire 48c, which is a second wire attached to the lower opening 47c, is set.

  Each wire 48 is inserted into the removal operation unit 115 by inserting a tool (not shown) having an L-shaped hook, for example, and pulled in the direction opposite to the hook 37, whereby the locking portions 114, 114 and the locking recess 55 of the hook 37 are locked. , 55 can be disengaged.

  The wire holding unit 106 includes a circular hole-shaped first holding unit 117 that holds the wire body 111, an arm holding unit 118 that is continuous with the first holding unit 117 and holds the second arm 113, and a held portion 116. And a second holding part 119 for holding. Then, the side wires 48a and 48b are held by the wire holding portion 106 so as to urge the module 11 toward the center of gravity (center) of the virtual triangle T, that is, in the horizontal direction and the downward direction. 48c is held so as to urge the module 11 toward the center of gravity (center) of the virtual triangle T, that is, upward (direction perpendicular to the steering shaft).

  The first holding portion 117 is provided so as to penetrate the fixing portion 104, and the wire main body 111 of the wire 48 is fitted to hold the outer periphery of the wire main body 111.

  The arm holding part 118 is formed in a predetermined direction along the tangential direction of the first holding part 117, and restricts the rotational position of the second arm 113 of the wire 48 against the biasing force.

  The second holding part 119 is formed in a curved shape along an arc centered on the first holding part 117 at a position opposite to the first holding part 117 and the arm holding part 118 with respect to the opening 47. The rotation position of the first arm 112 is regulated by holding the held portion 116 of the wire 48 against the bias at the end portion. Therefore, the relative angle between the first arm 112 and the second arm 113 of the wire 48 is set according to the positional relationship between the end of the second holding part 119 and the arm holding part 118. In the present embodiment, the magnitude of the urging load by the wire 48 is set corresponding to (in proportion to) the size of the aperture angle of the second arm 113 from the natural state.

  Here, the sum of the urging loads applied to the hooks 37 by these wires 48 is substantially zero. In the case of the present embodiment, since the lower wire 48c does not apply a biasing load in the left-right direction to the module 11, a biasing load applied in the left-right direction is set by the side wires 48a, 48b. The side wires 48b and 48b are set so that the aperture angle θ2 of the second arm 113 is set to be equal to each other, and are arranged symmetrically with respect to the urging load direction by the lower wire 48c and opposite to each other. By generating the urging load in the direction, the urging loads in the left-right direction cancel each other. Therefore, the aperture angle θ3 of the second arm 113 of the lower wire 48c is set so as to cancel the weight of the module 11 and the urging load applied downward by the side wires 48a and 48b. That is, if the mass of the module 11 is m and the gravitational acceleration is g, the weight M1 of the module 11 to be supported by the lower wire 48c is M1 = m · g · cos θ1. The weight M2 of the module 11 applied along the steering shaft is offset by the urging load of the horn spring 51. Further, the urging load F from the side wires 48a and 48b to be supported by the lower wire 48c is the output torque T1 from the side wires 48a and 48b, and the center of the wire body 111 of the side wires 48a and 48b. The distance to the point of action (intermediate part of the locking parts 114, 114) is D, and the angle at which the urging load from the side wires 48a, 48b acts downward (in the direction perpendicular to the steering shaft) with respect to the hook 37. Assuming that (the vertical angle of the first arm 112 viewed from the front direction) is θ4, F = 2 · (T1 / D) · sin θ4. Accordingly, since the output torque T2 required for the lower wire 48c to cancel the sum (M1 + F) of the weight M1 and the biasing load F is T2 = (M1 + F) · D, the second arm of the lower wire 48c. The aperture angle θ3 of 113 is set to θ3 = T2 / k = {(M1 + F) · D} / k, where k is the spring constant of the lower wire 48c.

  Specifically, in the present embodiment, the aperture angle θ2 of the second arm 113 of the side wires 48a and 48b held by the wire holding unit 106 is, for example, 20 ° (for example, the first arm 112 and the second arm 113 The angle is set to 90 °), and the aperture angle θ3 of the second arm 113 of the lower wire 48c held by the wire holding portion 106 is set to be larger than the aperture angle θ2, for example, 36 °.

  The fixed contact 63 is formed of a member such as a conductive metal, and is disposed on both sides and the lower portion of the boss core 96 and protrudes toward the front side.

  Each spoke metal core 97 connects the boss metal core 96 and the rim metal core 95 in a radial manner, and is connected to the rim metal core 95 from one end continuous with each connection metal core 103 of the boss metal core 96. It is bent in the shape of a vertical wall so as to gradually protrude toward the end portion toward the front.

  The steering wheel body 12 is combined with the cover body 13 from the back side and attached to the steering wheel body 12 while being positioned. Thereafter, the boss 101 of the steering wheel main body 12 is fitted to the steering shaft, and is fastened and fixed with a nut (not shown).

  The module 11 is simply pushed into the steering wheel main body 12 from the front side, so that it can be attached with one touch. That is, when the module 11 is pushed into the steering wheel body 12 from the front side, the wire holding portions 106 of the wires 48 located in the respective openings 47 engage with the locking recesses 55, 55 of the hook 37, and both sides and the lower side. The module 11 is engaged with the steering wheel main body 12 and supported to prevent the module 11 from coming off.

  More specifically, the module 11 inserts the hook 37 when the hook 37 protruding to the foremost portion, that is, the position facing the boss core metal 96 is aligned and pushed into each opening 47 opened in the base plate 21. The hook body 43 is inserted into the opening 47 by the portion 44 serving as a guide. At this time, in one side hook 37a, the adjustment rib 58 contacts the inner surface of the one side opening 47a, so that the module 11 is positioned in the vertical and horizontal directions with respect to the steering wheel body 12, and this positioning is supported. Then, the dimensional difference is adjusted by elastically deforming the claw portions 56a and 56a of the adjustment pins 56 and 56 that contact the inner surface of the one side opening 47a. Similarly, in the other side hook 37b and the lower hook 37c, the inner surfaces of the other side opening 47b and the lower opening 47c correspond to the vertical and horizontal positioning by the adjusting rib 58 of the one side hook 37a. The dimensional difference is adjusted by elastically deforming the claw portions 56a and 56a of the adjusting pins 56 and 56 that come into contact with each other. That is, the one side hook 37a acts as a positioning reference by the adjusting rib 58, and the other side hook 37b and the lower hook 37c prevent the module 11 from rotating. Positioned. Further, the insertion portion 44 causes the locking portions 114, 114 of the wire 48 located behind the opening 47 to cross (perpendicular to) the direction in which the hook 37 is pushed into the module 11 against the biasing load. Press and move. When the module 11 is fully pushed in and the insertion portion 44 passes through the locking portions 114 and 114, the wire 48 is restored and deformed, and the locking portions 114 and 114 are engaged with the locking recesses 55 and 55 of the hook 37. (FIGS. 1B to 1D). As a result, 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 the hooks 37 are securely retained in the front direction by the wires 48. Is prevented from unexpectedly coming off the steering wheel body 12.

  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 87 and rotates. In addition, the module 11 is guided relatively forward by the hooks 37 when the occupant pushes the airbag cover 22 of the module 11 which also serves as a pushing portion against the urging load of each horn spring 51. When any one of the movable contacts 38 comes into contact with the fixed contact 63, the horn device on the vehicle body side is blown. At this time, when the occupant pushes a position deviated from the center, such as up and down or left and right of the air bag cover 22, the air bag cover 22 moves forward in a slightly inclined state. In the three hooks 37 (the side hooks 37a and 37b and the lower hook 37c), the adjustment rib 58 is set only on one hook (the side hook 37a), and thus the inclination is prevented by the adjustment rib 58. There is nothing.

  Further, when removing the module 11 from the steering wheel main body 12, an unillustrated instrument having an L-shaped hook, for example, is inserted into the removal operation portion 115 and pulled away from the locking engagement recesses 55, 55 in the anti-hook 37 direction. As a result, the engagement of the hook 37 by the wire 48 is released, and the module 11 can be removed.

  On the other hand, 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.

  As described above, according to the present embodiment, the adjustment protruding from the outer peripheral surface 54 of one side hook 37a among the plurality of columnar hooks 37 inserted into the opening 47 and engaged with the wire 48 is provided. The rib 58 is in contact with the inner surface of the one side opening 47a so that the position of the one side hook 37a in the one side opening 47a is regulated, and the outer periphery of the one side hook 37a. A plurality of adjustment pins 56 projecting at positions different from the adjustment ribs 58 of the surface 54 are elastically in contact with the inner surface of the one side opening 47a by the contact with the inner surface of the one side opening 47a of the adjustment rib 58. To do. Therefore, the functions of supporting and positioning the module 11 with respect to the steering wheel main body 12 can be integrated into the hooks 37, the openings 47, and the wires 48, in other words, for supporting the module 11 with respect to the steering wheel main body 12. The module 11 can be shared for positioning with respect to the steering wheel main body 12 by the hook 37, the opening 47 and the wire 48 to be used, and it is not necessary to take a space for providing a separate positioning pin, etc. 11 can be reliably positioned with respect to the steering wheel body 12.

  Further, the biasing loads in the left and right direction of the side wires 48a and 48b are made equal, and the biasing load in the direction toward the lower wire 48b below the side wires 48a and 48b is applied upward by the lower wire 48c. By equalizing the bias load, the sum of the bias loads of the plurality of wires 48 with respect to the plurality of hooks 37 is made substantially zero at the position where all the hooks 37 are centered. By adjusting, the module 11 and the steering wheel body 12 can be positioned more reliably while supporting the miniaturization of the module 11 without increasing the number of parts such as adding additional parts. And production costs are not affected. Moreover, the urging load of the wire 48 can be easily changed simply by changing the aperture angle of the second arm 113.

  Further, a plurality of adjustment pins 56 are provided on the outer peripheral surface 54 of the other side hook 37b and the lower hook 37c, excluding one side hook 37a, and these adjustment pins 56 are connected to the one side hook 37a. The module 11 is attached to the steering wheel main body 12 by elastically contacting the inner surfaces of the other side opening 47b and the lower opening 47c by contact with the inner surface of one side opening 47a of the adjusting rib 58. The module 11 and the steering wheel main body 12 can be positioned more reliably while the rotation can be reliably prevented and the module 11 can be reduced in size.

  As a result, the layout is advantageous, and the module 11 can be downsized and the structure can be diverted to multiple vehicle types.

  In addition, the adjustment rib 58 and the adjustment pin 56 of the hook 37 are along the axial direction of the hook 37, which is the mold release direction when the base plate 21 is molded, so that it is easy without complicating the mold of the base plate 21. Can be molded.

  In the first embodiment described above, the arrangement of the wires 48, that is, the wire holding, can be achieved if the sum of the urging loads on the hooks 37 by the wires 48 is substantially zero, that is, if the urging loads by all the wires 48 are balanced. The positions and shapes of the portion 106 and the fixing portion 104 can be arbitrarily set. For example, as in the second embodiment shown in FIG. 8, the positions of the side wires 48a and 48b can be changed by appropriately changing the urging loads (throttle angle of the second arm 113) by the side wires 48a and 48b. It is good also as an asymmetrical arrangement | positioning by changing to the up-down direction and the left-right direction, respectively. Further, as in the third embodiment shown in FIG. 9, the position of at least one of the wires 48, for example, the position of the side wire 48b is set along the direction of the biasing load (along the coaxial of the resultant force). When changing, the asymmetrical arrangement can be made without changing the urging load. According to the second and third embodiments, since the asymmetrical arrangement of the wires 48 can be handled, the degree of freedom in designing the steering wheel 10 (module 11 and steering wheel body 12) is improved.

  In each of the above embodiments, the hook 37 provided with the adjustment rib may be the other side hook 37b or the lower hook 37c.

  Further, the steering wheel 10 is not limited to the configuration including the three spoke portions 89, and can be applied to a configuration including, for example, two or four spoke portions 89.

  The wire 48 can have any other shape such as a U shape.

  The module 11 (base plate 21) is provided with a hook 37 so that the opening 47 and the wire 48 are disposed on the steering wheel body 12 (boss core 96). It is also possible to adopt a configuration in which the wire 48 is disposed and the hook 37 is projected from the steering wheel body 12 (boss core 96).

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

  The present invention can be suitably used, for example, as a steering wheel for an automobile.

10 Steering wheel as a steering wheel
11 modules
12 Steering wheel body as a steering wheel body
37 hook
47 Opening as hole
48 Wire as engaging member
56 Adjusting pin as adjustment section
58 Adjusting rib as positioning reference

Claims (3)

The handle body,
Module,
A plurality of holes provided in any one of the handle body and the module;
A plurality of hooks provided on the other side of the handle body and the module, each of which can be inserted into the hole,
Arranged in each hole, urged in a predetermined direction intersecting the insertion direction of the hook into the hole, and engaged with the hook inserted into the hole to hold the hook. And a plurality of engaging members for supporting the module on the handle,
The one hook is protruded from the outer surface and contacts the inner surface of the one hole to regulate the position of the one hook in the one hole, and the positioning reference Providing a plurality of adjusting portions protruding on the outer surface at different positions and elastically contacting the inner surface of the one hole portion by contacting the inner surface of the one hole portion of the positioning reference portion. handle. The handle according to claim 1, wherein the sum of the urging loads on the plurality of hooks of the plurality of engaging members is substantially zero. The remaining other hooks except for one of the plurality of hooks protrude from the outer surface and contact the inner surface of one hole of the positioning reference portion of the one hook so as to contact the inner surface of the remaining other hole. The handle according to claim 1, further comprising a plurality of adjusting portions that elastically contact with the handle.

Images