JP2013203366A - Steering wheel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a steering wheel having a finisher engagement structure in which when an impact load acts on a body of the steering wheel, deformation of a core metal of a grip or spoke is allowed and outward projection of a finisher end is avoided.SOLUTION: Engaging claws (8a to 8c) are formed on projections (7) erected on a back face of a finisher (6). The projections (7) are inserted in long holes (12) formed on long hole portions (11) attached to a core metal (5a) of a spoke so that the engaging claws (8a to 8c) are engage with back faces (11a) of the long hole portions (11). When a core metal (4a) of a grip (4) is bent opposite to an occupant by an impact load, the projections (7) do not slip out of the long holes (12) but slides relatively along the long holes (12). This causes the finisher to follow the deformation of the core metal of the grip or spoke.

Description

  The present invention relates to a steering wheel for steering a vehicle.

  In recent years, in order to ensure the safety of the driver at the time of a vehicle collision or the like, various types of steering wheels employing a deformable core metal structure have been proposed. At the time of a vehicle collision, for example, the core metal of the grip part constituting the rotating outer peripheral part of the steering wheel or the core metal of the spoke part connecting the grip part and the boss part is deformed to the anti-driver side. It is possible to absorb and mitigate the impact of the driver who contacts the steering wheel.

  In order to absorb the impact as much as possible by deformation of the core of the grip part and the core of the spoke part, the core part of the grip part and the core part of the spoke part which are deformed by the impact load are configured to be more deformed. It is desirable to keep it. By the way, in a steering wheel, the structure which decorated the core metal of a boss | hub part and the core metal of a spoke part with the finisher is used abundantly. Moreover, the finisher is configured to engage with the core bars of the grip part, the boss part, and the spoke part. And as an engagement structure of a finisher, even if a grip part and a spoke part deform | transform, it is not comprised so that it can track this deformation | transformation.

  For this reason, even if the grip part or the spoke part tends to deform greatly in the event of a vehicle collision, the finisher cannot sufficiently follow the deformation of the engaged grip part or spoke part, In this state, the engaged state with the core metal of the boss part and the core metal of the spoke part is maintained. As a result, the steering wheel cannot be greatly deformed by the finisher acting like a rigid body.

  A vehicle steering wheel is proposed in Patent Document 1 that solves this problem and that can greatly deform the steering wheel without being interrupted by the finisher when an impact load acts on the steering wheel.

  In the vehicle steering wheel in Patent Document 1, a thin portion is formed in a fixed portion of a garnish (corresponding to the finisher of the present invention) that is engaged with a core metal of a spoke portion. That is, a fixed part is erected on the back side of the garnish covering the upper surface of the core rim part, and a thin part is formed around the base part of the fixed part on the back side of the garnish. Yes.

  When the mandrel rim portion of the steering wheel is bent downward by the action of the impact load, the thin portion formed on the garnish is broken. Because it is configured in this way, when the core rim part is bent downward, the garnish body is separated into the part engaged with the core rim part and the part remaining on the main body side by the broken thin part. Can be made. When the core rim portion bends and moves downward, only the garnish portion engaged with the core rim portion moves downward together with the core rim portion. The amount of movement is not reduced.

JP 2009-40325 A

  In the vehicle steering wheel described in Patent Document 1, when the garnish breaks at the thin wall portion, the garnish has a portion covering the upper surface of the core rim portion with the broken thin portion as a boundary, and the boss portion side. It will be divided into the part remaining on the garnish main body side covering. And the part of the garnish which coat | covers the upper surface of a metal core rim part will move to the downward side with the downward bending of a metal core rim part.

As a result, the fracture surface of the garnish newly formed by being divided in the thin-walled portion will be exposed to the outside in a state where it is open.
In order to prevent the cracked open garnish fracture surface from protruding outward, it was necessary to take various measures, and an increase in cost was inevitable.

  The present invention has a finisher engagement structure that allows deformation of the core metal of the grip part and the spoke part when an impact load is applied to the steering wheel body, and prevents the end face of the finisher from protruding outward. The purpose is to provide a steering wheel.

The object of the present invention can be achieved by the inventions described in claims 1 to 6.
That is, the steering wheel of the present invention includes a boss portion connected to a steering shaft, a grip portion that is a grip portion, a core metal that connects a spoke portion that connects the boss portion and the grip portion, and the core metal. A steering wheel comprising a decorating finisher,
In at least one engagement location among the engagement locations of the finisher and the core metal of the spoke portion, the core metal of the spoke portion or the back surface of the finisher has a length direction of the core metal of the spoke portion. A long hole portion having a long hole along is disposed, and a protrusion portion to be inserted into the long hole is disposed on the back surface of the finisher or the core metal of the spoke portion,
A plurality of engaging claws are formed at the free end of the protruding portion, and when the protruding portion is inserted into the long hole, the plurality of engaging claws are at least different from the surface of the long hole portion. When the impact load acts on the steering wheel and the cored bar of the spoke part is bent and deformed to the anti-driver side, the protrusion does not come out of the long hole and the long part is engaged. The most important feature is that it slides relatively along the longitudinal direction of the hole.

The main feature of the present invention is that the elongated hole portion is disposed on the core metal of the spoke portion, and the protruding portion is erected on the back surface of the finisher.
Further, in the present invention, when the protrusion is inserted into the elongated hole in order to engage the finisher with the core metal of the spoke portion, one engagement claw among the plurality of engagement claws is Engaging with the back surface of the long hole portion on the end surface side of the long hole, and at least one engaging claw among the remaining engaging claws on the back surface of the long hole portion on the side surface side of the long hole. The main feature is that it is engaged.

  Furthermore, in the present invention, when the elongated hole is formed in a T shape in a top view and the finisher is inserted into the elongated hole in order to engage the finisher with the core metal of the spoke portion, The main feature is that the protrusion is inserted at the position of the intersection in the T-shape.

In the present invention, the elongated hole is formed in an L shape in a top view, and when the protrusion is inserted into the elongated hole in order to engage the finisher with the core metal of the spoke portion, The main feature is that the protrusion is inserted at the position of the refracting portion in the L-shape.
Furthermore, the present invention is mainly characterized in that a pair of the long hole portions are arranged on both sides with the core metal of the spoke portion interposed therebetween.

  In this invention, the long hole part which has a long hole along the length direction of the metal core of a spoke part is arrange | positioned in the back surface of the metal core or finisher of a spoke part. The protrusions to be inserted into the long holes are arranged on the back surface of the finisher or the core metal of the spoke part. Then, the plurality of engaging claws formed at the free end of the protruding portion are connected to the surface of the long hole portion on the tip side where the protruding portion is inserted, that is, the long hole portion facing the protruding portion when the protruding portion is inserted. The engaging structure can engage with the surface opposite to the surface from at least two different directions.

  With this engagement structure, even if an impact load acts on the steering wheel and the grip part or spoke part bends and deforms on the anti-driver's side, the engagement claw and the long hole of the protrusion inserted into the long hole The engaged state with the surface of the part is always maintained.

  Even if the grip part or the spoke part bends and deforms on the anti-driver side, the projecting part does not come out of the long hole due to the finisher engaging structure by the long hole part and the projecting part. It is possible to allow the core metal of the part to be deformed. At this time, relative sliding along the longitudinal direction of the long hole is performed between the protrusion and the long hole.

  In this way, the finisher engagement structure allows the core part of the grip part and the spoke part to be deformed, and even if the core part of the grip part and the spoke part is allowed to deform, the finisher and the long hole The engagement interval with the part is maintained. And even if a grip part and a spoke part bend and deform | transform to the anti-driver | operator side, it can avoid that the edge part of a finisher protrudes outward. As described above, since the end of the finisher can be prevented from protruding outward with a simple configuration, the manufacturing cost of the steering wheel that can prevent the end of the finisher from protruding outward is reduced. Can be reduced.

  In the present invention, a long hole portion having a long hole along the length direction of the core metal of the spoke portion is disposed on the core metal of the spoke portion, and a protruding portion to be inserted into the long hole is erected on the back surface of the finisher. It can be arranged in the state. Alternatively, a configuration in which a long hole portion having a long hole is disposed on the back surface of the finisher, and the projection portion is disposed on the core metal of the spoke portion.

  When the protruding portion is inserted into the elongated hole, the engaging claws engaged with the back surface of the elongated hole portion on the end surface side of the elongated hole and the lateral surface side of the elongated hole by the plurality of engaging claws formed on the protruding portion. An engaging claw engaged with the back surface of the long hole portion can be provided. With this configuration, even if the grip part or the spoke part is bent and deformed to the anti-driver side, the protrusion part is surely prevented from coming out of the long hole, and the protrusion part and the long hole are arranged along the longitudinal direction of the long hole. It can be made to slide relatively, and the sliding at this time can be performed smoothly.

  When the finisher is engaged with the core metal of the spoke part by disposing the long hole part on the core metal of the spoke part and the projection part on the back surface of the finisher, the projection part is placed on the member to be covered from above. If it is arranged, it is possible to easily perform alignment when the protrusion is inserted into the elongated hole.

  In this case, the protrusion can be inserted into the end face side of the elongated hole that is spaced from the boss part side. With this configuration, when the grip part or the spoke part is bent toward the anti-driver side, the protrusion part slides relative to the long hole toward the boss part side of the long hole. can do. That is, the long hole slides along the longitudinal direction of the long hole with respect to the protrusion.

  Moreover, since the protrusion is inserted on the end surface side away from the boss part side in the long hole with the finisher attached, in the normal state, the protrusion part inserted in the long hole is from the boss part side. Further, it is possible to restrict movement in a direction away from each other. Thereby, the installation position of the finisher can be accurately performed, and the finisher can be prevented from being displaced from the installation position.

  When a long hole portion having a long hole is disposed on the back surface of the finisher and the protrusion is disposed on the core of the spoke portion, the protrusion is inserted into the end surface of the steering wheel at the boss portion side. be able to. With this configuration, when the grip portion or the spoke portion is bent and deformed toward the anti-driver side, the protruding portion is separated from the boss portion side of the steering wheel from the end surface side of the boss portion in the long hole. It slides relatively in the long hole toward the.

  In addition, the protrusion provided on the core of the spoke part is inserted into the end face side of the boss part side in the long hole, so that the protrusion part inserted into the long hole becomes a boss part in a normal state. The movement toward the side can be restricted. Thereby, the installation position of the finisher can be accurately performed, and the finisher can be prevented from being displaced from the installation position.

  In the present invention, the shape of the long hole can be formed in an I shape, a T shape, or an L shape (including an inverted L shape) in a top view. When the long hole is formed in a T-shape or L-shape, when the finisher is attached to the core of the spoke part, the protruding part standing on the back side of the finisher has the position of the intersection in the T-shape and the L-shape. The arrangement position of the projection and the long hole portion can be configured so as to be inserted at the position of the refracting portion in the shape.

  By configuring in this way, among the plurality of engaging claws provided at the free end of the protruding portion, the engaging claw disposed on the side surface side of the elongated hole is inserted into the elongated hole. Since it can pass through a T-shaped or L-shaped corner portion, the protruding portion can be easily inserted into the long hole. This makes it possible to easily perform the assembling work when attaching the finisher to the core of the spoke part.

  Regardless of whether the long hole portion is disposed on the core of the spoke portion or on the back surface side of the finisher, the long hole portion is on both side surfaces of the core portion of the spoke portion. It can comprise as a pair of long hole part so that it may be located in this site | part. And the finisher formed in the mirror surface object with respect to the centerline in the vertical direction of a steering wheel can be attached to the core metal of the spoke part in a stable state.

It is the perspective view which looked at the steering wheel which removed the finisher from the front. Example 1 It is the perspective view which looked at the finisher from the diagonal. Example 1 It is a principal part perspective view which shows the arrangement configuration of a long hole part. Example 1 It is a principal part perspective view which shows a projection part and an engaging claw. Example 1 It is principal part sectional drawing which shows the engagement state of a finisher. Example 1 It is principal part sectional drawing which shows the engagement state of a finisher when an impact load is added to a steering wheel. Example 1 It is a principal part cross-sectional view which shows the engagement state of an engaging claw and a long hole part. Example 1 It is a principal part perspective view which shows another protrusion part and an engaging claw. Example 1 It is a principal part perspective view which shows the arrangement structure of another long hole part. (Example 2) It is a principal part perspective view which shows another protrusion part and an engaging claw. (Example 2) It is a principal part longitudinal cross-sectional view which shows the engagement state of another engagement claw and a long hole part. (Example 2) It is a front view which shows the arrangement configuration of another long hole part. (Example 2) It is a principal part perspective view which shows the arrangement structure of another long hole part. (Example 3)

  Preferred embodiments of the present invention will be specifically described below with reference to the accompanying drawings. As the configuration of the steering wheel of the present invention, in addition to the shape and arrangement described below, the shape and arrangement can be adopted as long as they can solve the problems of the present invention. It can be done. For this reason, this invention is not limited to the Example demonstrated below, A various change is possible.

  The structure of Example 1 which concerns on this invention is demonstrated using FIGS. FIG. 1 is a perspective view of a steering wheel according to an embodiment of the present invention with a finisher removed. FIG. 2 shows a perspective view of the finisher. As shown in FIG. 1, the metal core of the steering wheel 1 includes a metal core 3a of a boss portion 3 to which a steering shaft (not shown) is connected, a metal core 4a of a grip portion 4 held by a driver (see FIG. 5), The core metal 5a of the spoke part 5 that connects the core metal 3a of the boss part 3 and the core metal 4a of the grip part 4 is connected and framed.

  In FIG. 1, the illustration of the cored bar 4a (see FIG. 5) in the grip portion 4 is omitted. The core metal of the steering wheel 1 is integrally formed using an aluminum alloy, a magnesium alloy, or the like.

  A finisher 6 (see FIG. 2) is disposed so as to cover the core metal of the steering wheel 1 so that the core metal of the steering wheel 1 is not exposed to the driver side. The rear side of the steering wheel 1 is covered with a lower cover 21. The finisher 6 and the lower cover 21 are integrally formed of a hard synthetic resin material such as an ABS resin material.

  As shown in FIG. 5, the cored bar 4a of the grip part 4 is connected to the cored bar 5a of the spoke part 5, and the outer peripheral part of the cored bar 4a is covered with a rim 4b. The rim 4b is made of a soft synthetic resin material or the like, and the portion of the rim 4b that contacts the finisher 6 can be made of a soft synthetic resin material or the like, or can be made of a hard synthetic resin material or the like. You can also keep it.

  A plurality of engaging portions for engaging and fixing the finisher 6 are formed on the metal core or the like of the steering wheel 1. In FIG. 1, only a pair of long hole portions 11 provided in the spoke portion 5 are illustrated. The configuration of the other engaging portions is omitted. As shown in FIG. 3, a long hole 12 having a shape along the length direction of the metal core 5 a of the spoke part 5 is formed in the long hole part 11.

  In FIG. 3, the structural example in which the surface shape of the long hole part 11 was formed in planar shape is shown. However, the surface shape of the long hole portion 11 may be configured to be a curved surface shape that follows the shape of the cored bar 5a of the spoke portion 5 as needed when viewed from the side. In addition, as the arrangement part of the long hole part 11, a configuration in which the long hole part 11 is arranged on the outer surface side of the core metal 5a of the pair of spoke parts 5 is shown. It can also be disposed at a portion on the inner surface side of the core 5a of the spoke portion 5.

  In FIG. 2, an example of a configuration in which the finisher 6 is configured integrally is shown. However, the finisher 6 may be divided into a portion covering the boss portion 3 and a portion covering the spoke portion 5. Further, the portion covering the spoke portion 5 can be divided into left and right parts toward the steering wheel 1.

And the part which covers the boss | hub part 3 can accommodate an airbag apparatus inside, and can have the function as a horn cover. Even when the finisher 6 is configured integrally, the finisher can be provided with a function as a horn cover.
Even if the finisher 6 is divided into a plurality of parts, the present invention can be preferably applied.

  A finisher 6 as shown in FIG. 2 can be attached to the core metal of the steering wheel 1 so as to cover the core metal of the steering wheel 1. As a result, both the front and back sides of the steering wheel 1 can be covered with the finisher 6 and the lower cover 21. As shown in FIG. 2, a protrusion 7 is erected on the back surface 6 a (see FIG. 5) side of the finisher 6, and when the protrusion 7 is inserted into the long hole 12 of the long hole 11, the protrusion The first engaging claw 8a to the third engaging claw 8c (see FIG. 4) formed on the free end side of 7 can be engaged with the back surface 11a (see FIG. 5) of the long hole portion 11.

  As shown in FIG. 4, the free end side of the protrusion 7 is configured to be branched into three. The three branched portions are formed as a first elastic piece 9a, a second elastic piece 9b, and a third elastic piece 9c, respectively, and a first engaging claw 8a, A second engagement claw 8b and a third engagement claw 8c are formed.

  Here, the configuration in which the long hole portion 11 is disposed on the core metal 5a of the spoke portion 5 and the projection portion 7 is erected on the back surface 6a side of the finisher 6 will be described, but the long hole portion 11 having the long hole 12 is described. Can be arranged on the back surface 6 a of the finisher 6, and the protrusion 7 can be arranged on the core metal 5 a of the spoke portion 5.

  As shown in FIGS. 5 and 7, when the protrusion 7 is inserted into the long hole 12 of the long hole 11, the first elastic piece 9 a, the second elastic piece 9 b, and the third elasticity on the free end side of the protrusion 7. The piece 9c is elastically deformed inward, and the first engagement claw 8a, the second engagement claw 8b, and the third engagement claw 8c can be easily inserted into the long hole 12. Can do.

  When the first engagement claw 8a, the second engagement claw 8b, and the third engagement claw 8c are inserted into the long hole 12, the first engagement claw 8a is elongated by the elastic return of the first elastic piece 9a. 12 can be engaged with the back surface 11a of the long hole portion 11 on the rear end surface 12a side. The second engagement claw 8b can be engaged with the back surface 11a of the long hole portion 11 on the first side surface 12b side of the long hole 12 by the elastic return of the second elastic piece 9b. By the elastic return of the third elastic piece 9c, it is possible to engage with the back surface 11a of the long hole portion 11 on the second side surface 12c side of the long hole 12.

  In this way, as shown in FIG. 7, the three first engaging claws 8 a to the third engaging claws 8 c of the protrusion 7 can be engaged in three directions different from the long hole portion 11. The finisher 6 can be prevented from moving further away from the boss portion 3 by the surface of the first elastic piece 9a coming into contact with the rear end surface 12a. As a result, the finisher 6 can be mounted at the correct mounting position.

  As shown in FIG. 6, when an impact load acts on the grip part 4 and the core bar 5a of the grip part 4 and the spoke part 5 is bent toward the non-occupant side, the second engagement claw 8b and the third engagement part are engaged. Since the engagement state between the joint claw 8c and the long hole portion 11 is maintained, the protrusion 7 that has been inserted into the long hole 12 does not come out of the long hole 12, and the long hole 12 is moved to the longitudinal direction of the long hole 12. It can be slid along the direction.

At this time, the engagement state between the first engagement claw 8a and the back surface 11a of the long hole portion 11 is released, but the second engagement claw 8b and the third engagement claw 8c are not in the long hole portion 11. Since the engaged state with the back surface 11a is maintained, the engaged state between the projecting portion 7 and the long hole portion 11 is maintained. Thus, the protrusion 7 and the long hole
12 is relatively slidable along the longitudinal direction of the long hole 12, so that when the core bar 5a of the grip part 4 and the spoke part 5 is bent toward the occupant side, the finisher 6 is Due to the engagement structure engaged with the portion 11, the cored bar 5a of the spoke portion 5 can be allowed to deform.

  In addition, since the protrusion 7 does not come out of the elongated hole 12 at this time, in the engagement structure between the finisher 6 and the core metal 5a of the spoke part 5, the interval between the finisher 6 and the core metal 5a of the spoke part 5 is set. Can be maintained. Since the engagement structure between the finisher 6 and the core metal 5a of the spoke portion 5 is thus configured, it is possible to prevent the end portion of the finisher 6 from rising outward.

  FIG. 3 shows a configuration example in which the surface of the long hole portion 11 is formed in a planar shape. However, when an impact load is applied to the grip part 4 and the core bar 5a of the grip part 4 and the spoke part 5 is bent to the side opposite to the occupant, the elongated hole 12 into which the protruding part 7 is inserted is replaced by the elongated hole 12 If the configuration can make the protrusion 7 and the long hole 12 relatively slidable along the longitudinal direction, for example, the surface of the long hole portion 11 on the finisher 6 side in a side view. It can also be formed in a protruding curved surface shape.

  When the protrusion 7 is disposed on the core 5a of the spoke 5 and the long hole 11 is disposed on the back surface 6a of the finisher 6, the core 4a of the grip 4 and the spoke 5 is anti-occupant. When bent sideways, the protrusion 7 slides along the longitudinal direction of the long hole 12 of the long hole portion 11.

  The configuration in which the three engaging claws of the first engaging claw 8a, the second engaging claw 8b, and the third engaging claw 8c are formed on the free end side of the protrusion 7 has been described. As shown in FIG. Alternatively, the third engaging claw 8c may be omitted. FIG. 8 shows a configuration in which the third engagement claw 8c is deleted. However, instead of deleting the third engagement claw 8c, a configuration in which the second engagement claw 8b is deleted may be used.

  In this case, when the protrusion 7 and the long hole 12 slide relative to each other along the longitudinal direction of the long hole 12, the surface of the second elastic piece 9b and the second side surface 12c of the long hole 12 are By sliding contact, the relative sliding of the projection 7 and the long hole 12 with respect to the long hole 12 can be guided.

  In Example 1, the case where the long hole formed in the long hole portion 11 in the top view is an I-shaped long hole 12 has been described as an example, or the shape of the long hole is as shown in FIG. It can also be formed as a T-shaped long hole 14. As a second embodiment, a case where a T-shaped long hole 14 is formed in the long hole portion 11 will be described with reference to FIGS.

  In the second embodiment, the structure of the long hole 14 and the first engagement claw 8a ′, the second engagement claw 8b ′, and the third engagement claw 8c ′ formed on the protrusion 7 inserted into the long hole 14 are used. The configuration is different from the configuration in the first embodiment, but the other configurations are the same as the configurations in the first embodiment. Therefore, about the structure similar to the structure in Example 1, the description about the member is abbreviate | omitted by using the member code | symbol used in Example 1. FIG.

  Also in the second embodiment, a description will be given by taking as an example a configuration in which the long hole portions 11 are provided in pairs with respect to the core metal 5a of the spoke portion 5, but the core metal of the spoke portion 5 in which the long hole portion 11 is disposed The part 5a can be provided in an appropriate part in the cored bar 5a. Further, the illustration of the engagement structure at the other part where the finisher 6 is attached to the cored bar is omitted.

As shown in FIG. 9, the long hole 14 is formed in a T shape in a top view, and a first groove 14a formed in the longitudinal direction and a second groove 14b orthogonal to one end of the first groove 14a. It is formed in the shape which has.
As shown in FIG. 10, at the free end of the protrusion 7 inserted into the long hole 14, the first engagement claw 8a ', the second engagement claw 8b' and the third engagement claw 8c 'are engaged. Claws are formed, and the second engagement claw 8b 'and the third engagement claw 8c' are formed in a back-to-back arrangement configuration with the protrusion 7 interposed therebetween. The first engagement claw 8a ′ is formed in an engagement direction orthogonal to the engagement direction of the second engagement claw 8b ′ and the third engagement claw 8c ′.

  As shown in FIG. 10, the second engaging claw 8b ′ and the third engaging claw 8c ′ are provided with an extending portion 20 extending in the direction opposite to the protruding direction of the first engaging claw 8a ′. ing. The upper surface of the extended portion 20 is formed flush with the upper surfaces of the second engagement claw 8b 'and the third engagement claw 8c'.

  In order to attach the finisher 6 to the steering wheel 1, a high pressing force is applied to the protruding portion 7 standing on the back surface 6a of the finisher 6, and the intersection 15c between the first groove 14a and the second groove 14b in the long hole 14 is applied. Insert at the position. At this time, the tip edge side of the first engaging claw 8a 'is slightly deformed upward, but is inserted into the intersecting portion 15c by a high pressing force.

  Since the second engagement claw 8b ′ and the third engagement claw 8c ′ are inserted into the corner portions 15a and 15b provided on the left and right of the second groove 14b, the second engagement claw 8b ′. In order to insert the third engaging claw 8c ′ into the second groove 14b, a high pressing force is not required.

  When the protruding portion 7 is inserted into the intersecting portion 15c, the first engaging claw 8a 'engages with the back surface 11a of the long hole portion 11 on the rear end surface 16a side of the long hole 14. The extended portions 20 formed respectively on the second engaging claw 8b ′ and the third engaging claw 8c ′ are long on the third side surface 16d and the fourth side surface 16e side in the corner portions 15a and 15b of the second groove 14b. The hole 11 can be engaged with the back surface 11a.

  When the extended portion 20 is engaged with the back surface 11a of the long hole portion 11, when the impact load is applied to the steering wheel 1 and the core metal 5a of the spoke portion 5 is displaced to the anti-driver side, the protruding portion 7 slides in the first groove 14a relative to the first groove 14a, and the second engagement claw 8b ′ and the third engagement claw 8c ′ are the back surfaces on the side surface side of the long hole portion 11. It can move smoothly while sliding on 11a.

  As shown in FIG. 11, the second engagement claw 8b ′ and the third engagement claw 8c ′ are formed on the back surface 11a of the long hole portion 11 on the first side surface 16b and the second side surface 16c side of the first groove 14a. Each engaged state is maintained. As a result, the protruding portion 7 can slide relatively along the first groove 14 a of the long hole 14 without coming out of the long hole 14.

  Instead of forming the extended portion 20, the second groove 14b may be chamfered with the edge on the lower side of the third side surface 16d and the fourth side surface 16e as a guide surface. Alternatively, on the upper surfaces of the second engagement claw 8b ′ and the third engagement claw 8c ′ on the third side surface 16d and the fourth side surface 16e side, the guide surfaces are inclined downward toward the third side surface 16d and the fourth side surface 16e side. Can also be formed. In addition, it is possible to appropriately adopt a configuration in which the protruding portion 7 can easily slide in the first groove 14a.

  As shown in FIG. 12, the long hole portion 11 may be disposed in a portion near the grip portion 4 side of the core metal 5 a of the spoke portion 5 as a portion where the long hole portion 11 is disposed. That is, depending on the shape of the steering wheel 1, the portion close to the grip portion 4 side of the core 5a of the spoke portion 5 may be configured in a flat plate shape. The long hole portion 11 can also be provided.

In the second embodiment, the case where the long hole formed in the long hole portion 11 in the top view is a T-shaped long hole 14 has been described as an example, or the shape of the long hole is as shown in FIG. It can also be formed as an L-shaped long hole 17. In Example 3, the case where the L-shaped long hole 17 is formed in the long hole portion 11 will be described with reference to FIG.

  In the second embodiment, three engaging claws, that is, a first engaging claw 8a ′, a second engaging claw 8b ′, and a third engaging claw 8c ′ are provided on the protrusion 7 inserted into the long hole 14. Forming. However, in the third embodiment, since the elongated hole 17 is formed in an L shape in a top view, the protrusion 7 may be the second engagement claw 8b ′ or the third engagement claw 8c ′ shown in FIG. It can be set as the structure which does not have one engaging claw.

  The long hole 17 includes a first groove 17a extending in the longitudinal direction and a second groove 17b refracted at right angles from one end of the first groove 17a. The protrusion 7 is erected on the back surface 6a of the finisher 6 (not shown), and by inserting the protrusion 7 into the refracting portion 17c of the elongated hole 17, of the two engaging claws formed on the protrusion 7, One of the engaging claws can be engaged with the rear end surface 18a of the long hole 17, and an extending portion 20 (see FIG. 10) formed to extend to the other engaging claw is provided in the third groove 17b. It can be engaged with the back surface 11a of the long hole portion 11 on the side surface 18d side.

  Then, one of the two engaging claws formed on the protruding portion 7 can be engaged with the back surface 11a of the long hole portion 11 on the first side surface 18b side in the first groove 17a. . Thus, the protrusion 7 can slide relatively along the first groove 17 a of the long hole 17 without coming out of the long hole 17.

  When an impact load is applied to the steering wheel 1 and the metal core 5a of the spoke portion 5 is displaced to the non-driver side, the projection 7 slides relatively in the first groove 17a and the second groove. The engaging claws engaged with the back surface 11a of the long hole portion 11 on the third side surface 18d side of 17b can be taken over from the extending portion 20 and can be directly engaged with the back surface 11a of the long hole portion 11.

  The present invention can suitably apply the technical concept of the present invention to a steering wheel to which the technical concept of the present invention can be applied.

  DESCRIPTION OF SYMBOLS 1 ... Steering wheel, 3 ... Boss part, 4 ... Grip part, 5 ... Spoke part, 6 ... Finisher, 7 ... Projection part, 8a, 8a '... 1st Engaging claw, 8b, 8b '... second engaging claw, 8c, 8c' ... third engaging claw, 11 ... long hole portion, 12 ... long hole, 14 ... long Hole, 15c ... intersection, 17 ... long hole, 17c ... refracting part, 20 ... extension part.

Claims (6)

Steering wheel comprising: a boss portion connected to a steering shaft; a grip portion that is a grip portion; a core metal that connects the spoke portions that connect the boss portion and the grip portion; and a finisher that decorates the core metal Because
In at least one engagement location among the engagement locations of the finisher and the core metal of the spoke portion, the core metal of the spoke portion or the back surface of the finisher has a length direction of the core metal of the spoke portion. A long hole portion having a long hole along is disposed, and a protrusion portion to be inserted into the long hole is disposed on the back surface of the finisher or the core metal of the spoke portion,
A plurality of engaging claws are formed at the free end of the protrusion,
When the protruding portion is inserted into the elongated hole, the plurality of engaging claws engage with the surface of the elongated hole portion from at least two different directions,
When the impact load acts on the steering wheel and the cored bar of the spoke part is bent and deformed to the anti-driver side, the protruding part does not come out of the long hole and extends along the longitudinal direction of the long hole. Steering wheel characterized by relatively sliding.   2. The steering wheel according to claim 1, wherein the elongated hole portion is disposed on a core metal of the spoke portion, and the protruding portion is erected on a back surface of the finisher.   When the protrusion is inserted into the elongated hole in order to engage the finisher with the core metal of the spoke portion, one of the plurality of engaging claws is an end surface of the elongated hole. Engaging with the back surface of the long hole portion on the side, and at least one of the remaining engaging claws is engaged with the back surface of the long hole portion on the side surface side of the long hole. The steering wheel according to claim 1 or 2. The elongated hole is formed in a T shape in a top view,
When the protrusion is inserted into the elongated hole in order to engage the finisher with the metal core of the spoke portion, the protrusion is inserted at the position of the intersection in the T-shape. The steering wheel according to claim 1. The long hole is formed in an L shape in a top view,
When the protrusion is inserted into the elongated hole in order to engage the finisher with the metal core of the spoke portion, the protrusion is inserted at the position of the refracting portion in the L-shape. The steering wheel according to claim 1.   The steering wheel according to any one of claims 1 to 5, wherein a pair of the long hole portions are disposed on both sides with a core metal of the spoke portion interposed therebetween.

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