JPH0247095Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a device for attaching a slip ring to a steering wheel of an automobile or the like.

[Conventional technology]

In the steering wheel of automobiles, etc.,
A slip ring is provided on the back side of the central boss portion, and electrical connections are made between, for example, the horn switch mechanism of the steering wheel, the horn device, and the battery via this slip ring.

In this case, as a method of fixing the slip ring, as shown in FIGS. 5 and 6, an annular slip ring fitting groove d is formed on the lower surface of the synthetic resin boss cover c of the boss portion b of the steering wheel body a. A slip ring e is fitted into the slip ring fitting groove d, and several parts of the side wall of the slip ring fitting groove d are caulked to the slip ring e to form a fixing part f. There is a method in which the slip ring e is held between the portion f and the inner bottom surface of the slip ring fitting groove d. Further, as shown in FIG. 7, a method is also used in which a plurality of mounting holes g are formed in the inner circumferential portion of the slip ring e and the slip ring is mounted using screws h through the mounting holes g.

[Problem that the invention attempts to solve]

However, when attaching by caulking as described above, the fixing part f formed by caulking
The amount of protrusion is small, and the diameter of the slip ring fitting groove d and the slip ring e changes with changes in the ambient temperature. In this case, when the inner side wall of the slip ring fitting groove d contracts due to a change in ambient temperature, the slip ring e becomes looser and the slip ring e
There is a risk that the slip ring may come off the fixed part f and fall out of the slip ring fitting groove d.

Furthermore, when attaching the slip ring using screws, it is troublesome to tighten the screws, and the screws also tend to loosen during use and cause rattling.

The present invention was devised in view of the above-mentioned points, and an object of the present invention is to securely fix a slip ring using a simple method.

[Means for solving problems]

In the present invention, a boss cover 6 made of synthetic resin is attached to the boss portion 4 of the steering wheel body 1, and an annular conductive slip ring 17 is fitted into an annular slip ring fitting groove 7 formed on the back surface of the boss cover 6. In a mounting device for a slip ring in a steering wheel to which the slip ring is fitted, a plurality of support pieces 8 having locking claws 9 are provided vertically from the inner bottom surface of the slip ring fitting groove 7 of the boss cover 6 at the lower end thereof, and the slip ring is mounted on the steering wheel. Outer peripheral wall 1 of ring fitting groove 7
A plurality of presser plates 12 are integrally formed at positions corresponding to each of the support pieces 8 via thin hinges 11 on the 0, and a locking plate 12 that engages with the locking claw 9 of the support piece 8 is provided on the presser plate 12. In addition to forming the hole 13, a pressing piece 14 that contacts the slip ring 17 is provided protrudingly on the holding plate 12, and an insertion hole 18 is bored in the slip ring 17 at a location corresponding to each of the supporting pieces 8,
The locking claws 9 of each of the support pieces 8 are connected to the slip rings 17.
The locking holes 13 of the presser plate 12 are inserted through the respective insertion holes 18 of the
At the same time, the pressing piece 14 of the pressing plate 12
is brought into contact with the lower surface of the slip ring 17.

[Effect]

In the present invention, the slip ring 17 is fitted into the slip ring fitting groove 7, and the locking hole 13 of each press plate 12 is engaged with the locking claw 9 of each support piece 8 to press the slip ring 17. It is pressed and held by the piece 14.

〔Example〕

Hereinafter, one embodiment of the present invention will be described with reference to FIGS. 1 to 4.

In FIG. 1, reference numeral 1 denotes a steering wheel body, and this steering wheel body 1 has an annular rim portion 2, spoke portions 3, and boss portions 4. As shown in FIG. As shown in FIG. 3, in this boss portion 4, a synthetic resin boss cover 6 is fitted and fixed to the lower part of a metal cylindrical boss 5 that is fitted onto a steering shaft (not shown).

As shown in FIGS. 2 to 4, this boss cover 6 has an annular slip ring fitting groove 7 formed on its lower surface as a slip ring fitting portion.
A plurality of support pieces 8, four in this embodiment, are provided vertically from the inner bottom surface of the slip ring fitting groove 7, and a locking claw 9 is provided at the lower end of each support piece 8. In addition, the outer peripheral wall 10 of the slip ring fitting groove 7
A holding plate 12 is integrally formed at a position corresponding to each of the supporting pieces 8 from the lower end of the holding plate 1 with a thin hinge 11 interposed therebetween. Each of the presser plates 12 has a locking hole 13 formed at the tip thereof to engage with the locking pawl 9, and a pressing piece 14 is integrally provided at the intermediate lower portion. A cylindrical portion 15 is formed at the center of the lower surface of the boss cover 6, and a signal canceling portion 16 is formed on the outer peripheral surface of this cylindrical portion 15.

Reference numeral 17 denotes a ring-shaped slip ring made of conductive metal that is fitted into the slip ring fitting groove 7, and this slip ring 17 is provided with insertion holes 18 at locations corresponding to the respective support pieces 8. .

Then, push the slip ring 17 into the slip ring fitting groove 7 on the back side of the steering wheel body 1 while passing each support piece 8 through each insertion hole 18 to fit it. The upper surface of the slip ring 17 is brought into contact with the inner bottom surface.

Next, each presser plate 12 is rotated inward from the thin hinge 11 to engage and position the locking claw 9 of each support piece 8 in each locking hole 13, and each presser plate 1
4 is brought into contact with the lower surface of the slip ring 17, thereby pressing and holding the slip ring 17.

The slip ring 17 is connected to one end of a horn switch mechanism (not shown) of the steering wheel body 1, and the other end of the horn switch mechanism is connected to a battery of an automobile or the like via a steering shaft.

In addition, as shown in Fig. 3, the slip ring 1
7 is contacted from below by a contact piece 19, and this contact piece 19 is connected to a battery of an automobile or the like via a lead wire, and when the boss 5 is fitted to the steering shaft,
It is adapted to come into contact with the lower surface of the slip ring 17.

[Effect of idea]

According to the present invention, the slip ring is fitted into the slip ring fitting groove, and the locking hole of each presser plate is engaged with the locking claw of each support piece, so that the slip ring is pressed and held by the pressing piece. Therefore, the slip ring can be easily installed with the holding plate, and the installation operation is easy.In the installed state, the slip ring is firmly secured by the holding plate of the holding plate, which is locked with the locking claw of each support piece. It is press-fitted and securely fixed, so there is no wobbling during use.

[Brief explanation of drawings]

1 to 4 show an embodiment of the present invention, in which FIG. 1 is a perspective view of a steering wheel, FIG. 2 is an exploded perspective view of the main parts, and FIG. 3 is a sectional view of the main parts. Fig. 4 is a perspective view of the presser plate section, Fig. 5 is a perspective view of a conventional steering wheel, Fig. 6 is a perspective view of a part of Fig. 5, and Fig. 7 is a perspective view showing another conventional example. It is. DESCRIPTION OF SYMBOLS 1... Steering wheel body, 4... Boss part, 6... Boss cover, 7... Slip ring fitting groove, 8... Support piece, 9... Locking claw, 10... Outer peripheral wall, 11... Thin wall Hinge, 12...Press plate, 1
3... Locking hole, 14... Pressing piece, 17... Slip ring, 18... Insertion hole.

Claims (1)

[Claim for Utility Model Registration] A synthetic resin boss cover is attached to the boss part of the steering wheel body, and an annular conductive slip ring is fitted into an annular slip ring fitting groove formed on the back side of the boss cover. In a mounting device for a slip ring in a steering wheel to be mounted, a plurality of support pieces having locking claws are hung from the inner bottom surface of the slip ring fitting groove of the boss cover at the lower end thereof, and the outer circumference of the slip ring fitting groove is provided. A plurality of presser plates are integrally formed on the wall at positions corresponding to the respective support pieces via thin-walled hinges, and locking holes are formed in the presser plates to engage with the locking claws of the support pieces, A pressing piece that comes into contact with the above-mentioned slip ring is provided on the holding plate, and an insertion hole is bored in the above-mentioned slip ring at a location corresponding to each of the above-mentioned support pieces, and the locking claw of each of the above-mentioned support pieces is connected to each of the above-mentioned slip rings. A mounting device for a slip ring in a steering wheel, characterized in that the slip ring is engaged with a locking hole of a holding plate through an insertion hole, and a pressing piece of the holding plate is brought into contact with a lower surface of the slip ring.