JPS60261752A - Steering wheel for car - Google Patents

Abstract

PURPOSE:To improve the incorporation work by installing an insertion part in snap engagement or a receiving part onto a wheel pad assembly body and a boss part. CONSTITUTION:In incorporation of a wheel pad into a boss part is carried-out by fitting an insertion part 6 formed onto the front and rear side brackets 2 and 3 onto a receiving part 28 formed at the front and rear edges of a receiving member 25. On insertion, a receiving hook 29 is engaged in snap form with an engaging hook 7 by allowing the receiving hool 29 to be deflected in the opening direction or the engaging hook 7 to be deflected in the turned-down direction. The transfer of the insertion part 6 in the insertion direction and the transfer in the transverse direction can be suppressed by the engagement between the cut concaved part 6b of the insertion part and the positioning hook 28b of the receiving part.

Description

[Detailed Description of the Invention] Technical Field> This invention provides a wheel pad that is assembled to a boss portion.
The present invention relates to an automobile steering wheel having a built-in impact energy absorber made of brittle plastic.

<Prior Art> Conventionally, the above-mentioned type of wheel pad has been assembled with a structure as shown in FIG. 6, for example.

An impact energy absorber (hereinafter referred to as "rE/A body") 54 is internally held together with a horn switch body 55 by a front bracket 52 and a rear bracket 53 screwed to the front and rear parts of the opening side of the wheel pad 51, respectively. A wheel pad assembly H is constructed. This wheel pad assembly H is slid rearward and clamps the front end of the boss plate 61 (at two locations) with a hook-shaped clip 56 formed on the front bracket 52, and is integrated into the rear bracket 53. The screw plate 57 is attached to the boss plate 6.
It is assembled to the boss part B by fixing screws (at two places) to the rear end of the main body. To assemble the wheel rad assembly H, connect the boss part B to which the lower cover 62 is attached to the main shaft 63.
Perform this after assembly. Therefore, the above-mentioned screw fixing must be performed almost blindly through the lower opening 62a of the lower cover 62, and the workability of assembly is not good. Lower cover 62
If the upper end of the peripheral wall (particularly the front side part) is higher than the upper surface of the boss plate 61 (see Figures 1 and 3), the front end of the boss plate 61 can be removed by the hook-shaped clip 56 while sliding the wheel pad assembly H. As a result, the clamping is performed almost blindly, resulting in poor assembly workability.Furthermore, if there is no sliding clearance space in the lower cover at the front side of the boss plate, assembly will be impossible. In addition, there are many requests for a design in which the wheel pad with the built-in E/A body is tall, and the height of the peripheral wall of the lower cover is also relatively high. Therefore, it has been desired to have a structure in which the height of the peripheral wall of the lower cover is limited, and the shape of the lower cover, that is, the wheel pad, is not subject to any design limitations when assembling the wheel pad assembly to the boss portion.

<Object of the invention> In view of the above, the present invention aims to provide an automobile steering wheel in which the assembly of the wheel pad assembly is easy and the wheel pad shape has a large degree of freedom in design. Purpose and destruction 1 fru.

<Summary of the Invention> The automobile steering wheel of the present invention has an E/A body made of brittle plastic built into the wheel pad assembly attached to the boss portion, and includes the following features:
An insertion part or a receiving part of a snap-fitting pair is attached to the wheel pad assembly and the boss part side, respectively, and the engaging direction of the snap-fitting pair is a direction substantially perpendicular to the plate surface of the boss part. have

<Example> An example of the steering wheel of the present invention is shown in FIGS. 1 to 5.

As in the past, the wheel pad assembly H1 is screwed to the rear of the opening section of the wheel pad 1 (two on the left and right).
Sheet metal front and rear brackets 2 and 3
Accordingly, the E/A body 4 and the horn switch body 5 are housed and held inside. Here, examples of the brittle plastic forming the E/A body include brittle grade materials such as hard foamed polyurethane and polystyrene. Also,
1. The wheel pad 1 is made of soft plastic such as soft polyurethane, polyvinyl chloride, or foams thereof, but is usually provided with a resin insert 11 made of hard plastic to maintain its shape, as shown in FIG. Further, at the screw-fastened portions of the brackets 2 and 3, a metal nut member 12 is held within the resin insert ll (FIG. 3).

On the other hand, a lower cover 22 is fixed to the boss brake 21 with screws (4 screws). In addition, a receiving member 25 made of sheet metal
The front end of the boss plate 21 is clamped (at two places) with a hook-shaped clip 26 formed on the front side thereof, and a screw plate 27 integrated on the rear side is screwed to the rear wall of the lower cover 22. Here, one of the snap-fitting pairs (insertion part) is formed on the front and rear brackets 2.3 screwed to the wheel pad assembly H1. At the same time, the other of the snap-fitting pair (receiving part) is formed at the front and rear ends of the receiving member fixed to the boss part Bl, and the wheel pad assembly H1 is assembled to the boss part B1 by snap engagement. It is being The direction of engagement is approximately the axial direction of the boss portion Bl, that is, the direction approximately perpendicular to the boss plate surface.

The form of the above-mentioned snap locking pair is not limited to #, but specifically as shown in the figure. The insertion part 6 has a rectangular plate shape with guide oblique sides 6a on both sides of the tip and a notch 6b in the center of the tip, and is formed by pulling an engaging claw 7 having a locking edge upward in the width direction of the intermediate part. ing. Note that reinforcing ribs may be formed on both sides of the insertion portion. The other receiver is part 28
is a plate shape whose lower end is a guide surface 28a bent toward the boss side, and a positioning pawl 28b that engages with the notch recess 6b is raised at the lower end. A pair of receiving claws 29 are formed that are curved inward in a U-shape.

Usage mode> Wheel pad H1 (7) boss part B in the above embodiment
The assembly to l is as follows.

Insert portions 6 formed on the front and rear brackets 2 and 3, respectively; receiving portions 2 formed on the front and rear ends of the receiving member 25;
Insert it into 8. When inserting the receiver, use the claw 29.
After the engaging claw 7 passes through the receiving claw 29 due to the deflection of either the engaging claw 7 bends in the opening direction or the engaging claw 7 deflects in the opposite direction, or both, the receiving claw 7 passes through the receiving claw 29, and then the receiving claw 29 bends with the engaging claw 7 due to the spring elasticity. snap-in engagement. At this time, movement of the insertion part 6 in the insertion direction and in the left-right direction is prevented by engagement between the notch recess 6b of the insertion part and the positioning claw 28b of the receiving part.

<Effects of the Invention> Since the automobile steering wheel of the present invention has the above-mentioned configuration, it has the following effects.

An insertion part or a receiving part of a snap-engaging pair is attached to the wheel pad assembly and the boss part, respectively, and since the engagement direction of the snap-engaging pair is substantially perpendicular to the plate surface of the boss part, the boss It is now possible to assemble the receiving member (to the boss part) before assembling the main shaft to the main shaft, which eliminates the need to tighten screws from the back side of the lower cover after installing the main shaft, and the E/A body can be installed in any direction. is approximately in the axial direction of the boss portion. Therefore, the workability of assembling the wheel pad assembly is good, and the workability of the assembly is not adversely affected even if the height of the peripheral wall of the lower cover is high.
It also expands the design freedom of wheel pads.

[Brief explanation of the drawing]

1 to 5 show one embodiment of the present invention, and FIG.
A partially omitted cross-sectional view of the back side of the I-I line in the figure, Figure 2 is the 1st
Fig. 3 is an enlarged view of the section taken in the direction of arrow II in the figure, Fig. 3 is a partially omitted front sectional view taken along the line ■-■ in Fig. 5, and Fig. 4 is an exploded perspective view showing an example of the snap engagement pair used in this embodiment. 5 is a partially cutaway front view of the steering wheel, and FIG. 6 is a partially omitted cross-sectional view of a part of the wheel pad assembly in a conventional example. 1.51... Wheel pad, 4.54... Impact energy absorber (E/A body), 6... Insertion part, 7
...Engaging claw, 21.61...Boss plate, 22
, '62...Lower cover, 25...Bracket is part,
28...Uke is part, 29...Uke is claw, l(, Hl...
・Wheel pad assembly, B, Bl...boss part. Patent applicant Figure 1 Figure 3 Figure 4 Figure 334-

Claims (1)

[Scope of Claims] An automobile steering wheel having a structure in which a wheel pad assembly assembled to a boss part has an impact energy absorber made of brittle plastic built-in and held therein, wherein the wheel pad assembly and the boss part side include an impact energy absorber made of brittle plastic. A steering wheel for an automobile, wherein an insertion portion or a receiving portion of a snap locking pair is attached, respectively, and an engaging direction of the snap locking pair is a direction substantially perpendicular to a plate surface of the boss portion.