JPH0241454B2 - - Google Patents

Description

[Detailed Description of the Invention] Technical Field The present invention relates to a steering wheel with a stationary pad portion that is equipped with a pad non-rotation mechanism that keeps the pad portion stationary even when the steering wheel is rotated, and more particularly relates to a steering wheel with a pad portion that is not rotated during transportation. The present invention relates to a steering wheel equipped with a rotation prevention device that prevents relative rotation between a pad and a steering wheel body.

PRIOR ART In recent automobiles, there is a tendency for electronic devices such as various switches and indicators such as a horn, radio, turn signal, and headlights to be attached to the pad of the steering wheel. If it rotates, it will cause inconvenience in operating the switch, checking the display, etc. For this reason, steering wheels are used that are equipped with a pad non-rotation mechanism that maintains the pad portion in a resting state even when the steering wheel is rotated.

Conventionally, as shown in FIG. 1, this type of pad non-rotation mechanism has a column side fixed to a column 4 with respect to boss portions 2 and 3 protruding from both sides of a boss plate 1 of a steering wheel body S. sun gear 5
and a pad-side sun gear 7 to which the pad 6 is fixed are rotatably attached via bearings 8 and 9, and a planetary shaft to which planetary gears 10 and 11 meshing with both the sun gears 5 and 7 are attached. 12 is attached to the boss plate 1. Also, as shown in FIG. 2, cam grooves 13a,
The cylindrical cams 13 and 14 having the cylindrical cams 14a are connected to the boss portion 2,
In some cases, the boss plate 1 is provided with an interlocking member 17 having followers 15 and 16 at both ends so as to be slidable in the axial direction instead of the planetary shaft 12.

In this type of steering wheel, it is troublesome to assemble the pad non-rotating mechanism and the steering wheel main body S one by one in the automobile assembly process, so it is difficult to assemble the pad non-rotating mechanism and the steering wheel body S one by one in the automobile assembly process. It is desired that the entire mechanism be supplied to the automobile assembly process in an assembled state. However, the pad non-rotating mechanism has a column side sun gear 5.
Also, when the guide members such as the cylindrical cam 13 are fixed, there is no relative rotation between the pad 6 and the steering wheel body S, but before it is assembled to the column 4, the pad 6 and the steering wheel body S Relative rotation is possible. Therefore, during transportation, the pad 6 and the steering wheel body may rotate relative to each other, resulting in damage to the relay components and the pad non-rotation mechanism.

Purpose This invention has been made in view of the above-mentioned conventional problems, and its purpose is to prevent pads and steering wheels during transportation when guide members such as column-side sun gears and cylindrical cams are not fixed to the column. An object of the present invention is to provide a steering wheel equipped with a rotation prevention device during transportation that can reliably prevent relative rotation with a wheel body.

Structure of the Invention In order to achieve the above-mentioned object, the present invention provides a guide for a sun gear, a cylindrical cam, etc., which is fixed to columns rotatable relative to the boss portions protruding from both sides of the boss plate. A guide member such as a sun gear or a cylindrical cam to which members and pads are fixed, and a planetary gear, follower, etc. that is disposed through the boss plate and engages with and revolves around both guide members. In a pad part stationary steering wheel equipped with a pad non-rotation mechanism configured by interlocking members having engaging parts at both ends, a fixing member that prevents relative rotation between a guide member to which a pad is fixed and a boss plate is provided. It is provided in a removable manner.

Embodiment 1 A first embodiment embodying the present invention will be described below with reference to FIGS. 3 and 4. The column-side sun gear 5 and the pad-side sun gear 7, which are mounted on both sides of the boss plate 1 with the boss plate 1 in between, are each bent outward toward the outside of each sun gear 5, 7 on the opposite side of the boss plate 1. At the same time, locking members 18 and 19 having locking protrusions 18a and 19a protruding from their inner surfaces, respectively, are fixed. boss plate 1
A groove 20 that reaches near the outer periphery of both sun gears 5 and 7 is cut out on the outer periphery of the sun gears 5 and 7. The holding pin 21 as a fixing member is bent into a U-shape and has locking recesses 21a, 21 on the outer surface of both ends thereof.
b is formed, and the inner surfaces of both ends of the groove 20 are in contact with the sun gears 5, 7, and the locking recesses 21a, 21b are connected to the locking members 18, 21b.
It is adapted to be installed in a state where it is engaged with the locking protrusions 18a and 19a of No. 19.

When the clamping pin 21 is not attached, the boss plate 1 and the pad side sun gear 7 to which the pad 6 is fixed can rotate relative to each other, but when the clamping pin 21 is attached, the clamping pin 20 whose movement is regulated by the groove 20 Since the column side sun gear 5 and the pad side sun gear 7 are held by the pin 21, the boss plate 1
The relative rotation between the steering wheel body S and the pad side sun gear 7, that is, the relative rotation between the steering wheel body S and the pad 6 is reliably prevented. Therefore, during transportation before the steering wheel body S is attached to the column 4, damage to the relay parts and the pad non-rotation mechanism due to the relative rotation between the pad 6 and the steering wheel body S is unlikely to occur. or,
The clamping pin 21 can be easily removed by widening the gap between the locking members 18 and 19 and the sun gears 5 and 7 against their elasticity.

Example 2 Next, the second example embodying this invention will be described in the fifth example.
This will be explained according to Figures 7 to 7. A pair of insertion holes 22 are formed in the boss plate 1 at positions corresponding to symmetrical positions across the meshing portions of the sun gears 5, 7 and the planetary gears 10, 11, parallel to the axes of the sun gears 5, 7. . The locking pin 23 as a fixing member is bent into an abbreviated shape as shown in FIG.
and is mounted in contact with the outer periphery of the planetary gears 10 and 11. Also in this embodiment, the locking pin 23
By installing the sun gear 5 into the insertion hole 22,
The relative rotation between the pad 7 and the boss plate 1, that is, the relative rotation between the pad 6 and the steering wheel body S, is prevented, and damage to the relay components and the pad non-rotation mechanism during transportation can be reliably prevented.

Example 3 Next, the third example embodying this invention will be described in the eighth example.
This will be explained according to the diagram. A loose insertion hole 24 is formed in the bottom plate 6a of the pad 6 and the pad side sun gear 7 in parallel with the axis of the pad side sun gear 7. The boss plate 1 has a screw hole 25 formed at a position corresponding to the loose insertion hole 24, and a later screw 26 as a fixing member passing through the loose insertion hole 24 from the bottom plate 6a side of the pad 6 is inserted into the screw hole 25. It is screwed on.

In this embodiment, the column side sun gear 5 and planetary gears 10, 11 can always rotate relative to the boss plate 1 regardless of whether or not the chisel screw 26 is installed.
By screwing into the pad 6, the pad 6 and the pad side sun gear 7 are tightened and fixed to the boss plate 1, and relative rotation between the boss plate 1 and the pad 6, that is, the steering wheel body S and the pad 6 is prevented. It has the same effect.

In each of the above embodiments, a planetary gear mechanism is used as the pad non-rotating mechanism, but in the first and third embodiments, the ninth and tenth embodiments are explained.
As shown in the figure, the present invention can be similarly applied to a pad non-rotating mechanism that uses cylindrical cams 13 and 14 as guide members instead of sun gears 5 and 7. Alternatively, as shown in FIG. 11, locking recesses 21a and 21b may be formed on the inner surfaces of both ends of the holding pin 21, and the holding pin 21 may be locked and fixed to locking protrusions 27 provided on the sun gears 5 and 7. . In addition, as shown in FIG. 12, both sun gears 5, 7 and boss plate 1 may be fixed with adhesive tape 28 so that they cannot rotate relative to each other, or pads 6 and spokes of steering wheel body S may be fixed with pins, clips, or screws. It may also be fixed so as not to rotate relative to each other.

Effects As described in detail above, according to the present invention, in a steering wheel equipped with a pad non-rotation mechanism, relative rotation between the pad and the steering wheel body during transportation etc. is reliably prevented with a simple configuration. This has the excellent effect of reliably preventing damage to electrical parts and pad non-rotating mechanisms.

[Brief explanation of drawings]

Figure 1 is a partially cutaway side view of a steering wheel equipped with a pad non-rotating mechanism using a planetary gear mechanism, and Figure 2 is a partially cutaway side view of a steering wheel equipped with a pad non-rotating mechanism using a cylindrical cam. A side view, and FIGS. 3 and 4 show a first embodiment embodying the present invention. FIG. 3 is a partially cutaway side view, and FIG. 4 is a sectional view taken along the line A--A in FIG. 3. , 5th to 7th
The drawings show the second embodiment, in which Fig. 5 is a partially cutaway side view, Fig. 6 is a sectional view taken along line BB in Fig. 5, and Fig. 7 is a perspective view showing the locking pin. Fig. 8 is a sectional view showing the third embodiment, Fig. 9 is a partially cutaway side view of the first embodiment applied to a steering wheel equipped with a pad non-rotating mechanism using a cylindrical cam, and Fig. 10 is a cross-sectional view showing the third embodiment. The figure is a partially cutaway side view of the third embodiment applied to a steering wheel equipped with a pad non-rotating mechanism that also uses a cylindrical cam, and FIG. 11 is a partially cutaway side view showing a modification of the first embodiment. 12 are side views showing a modification example in which an adhesive tape is used as the fixing member. Boss plate...1, boss part...2, 3, column side sun gear...5, pad...6, pad side sun gear...
7, Planetary gear...10,11, Cylindrical cam...13,1
4. A holding pin as a fixing member...21, a locking pin...23, a screw...26, an adhesive tape...28.

Claims (1)

[Scope of Claims] 1. Guide members such as a sun gear 5 and a cylindrical cam 13 fixed to a column 4 which is attached to be rotatable relative to the boss parts 2 and 3 protruding from both sides of the boss plate 1, respectively. and guide members such as a sun gear 7 and a cylindrical cam 14 to which the pad 6 is fixed, and a planetary gear 10 that is disposed passing through the boss plate 1 and engages with and revolves around both guide members. 11. In a pad part stationary steering wheel equipped with a pad non-rotation mechanism configured by interlocking members 12 and 17 having engaging parts such as followers at both ends, the guide member to which the pad 6 is fixed; A steering wheel characterized in that a fixing member for preventing relative rotation with the boss plate 1 is removably provided. 2. The fixing member is a locking member formed in a U-shape, and having both ends protruding from the end faces of the guide members while passing through a groove 20 cut out in the circumferential surface of the boss plate 1. The steering wheel according to claim 1, wherein the steering wheel is a clamping pin 21 that is locked to 18 and 19. 3. The steering according to claim 1, wherein the fixing member is a screw 26 that passes through a guide member to which the pad 6 is fixed and is screwed into a screw hole 25 formed in the boss plate 1. wheel. 4 The fixing member is a U-shaped locking pin 23 fitted between the sun gear 7 as a guide member to which the pad 6 is fixed and the planetary gear 11 meshing with the sun gear 7. A steering wheel according to claim 1.