JPH067981Y2 - Vehicle steering system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a steering device for a vehicle having a combination switch.

(Prior Art) Conventionally, as a vehicle steering apparatus of the above-mentioned example, there is, for example, the apparatus described in Japanese Utility Model Laid-Open No. 62-185655.

That is, as shown in FIG. 4, a lever combination switch body having a turn switch lever and a wiper switch lever is provided, and the steering shaft 41
Of the switch base 4 arranged around the end of the steering wheel 42 on the side of and fixed to the above-mentioned switch body.
3 is a steering device for a vehicle provided with a cancel cam 44 that rotates integrally with the steering wheel 42.

The predetermined end surface 41a of the steering shaft 41 described above,
A roll connector 45 for signal transmission is arranged between the lower surface 42a of the steering wheel 42 and the roll connector 45 is bolted up to the lever combination switch main body. Since a shock absorbing spring 46, a so-called cancel cam spring, is arranged between the switch base 43 and the lower end 44a of the cancel cam 44 separated from the switch base 43, the switch base is provided at the predetermined end surface 41a of the steering shaft 41. Since a predetermined clearance dimension 1 in the axial direction is required between 43 and the cancel cam 44, and as a result, the thickness h2 of the roll connector 45 is significantly restricted, the roll connector 4
The wiring capacity of 5 is reduced and the amount of signal transmission is restricted. For example, the roll connector 45 becomes a minority signal circuit with only two circuits for the airbag signal circuit and one circuit for the horn signal circuit. Had a point.

(Object of the Invention) The present invention can form a gap between the predetermined end surface of the steering shaft and the lower surface of the steering wheel as large as possible, and increase the thickness of the roll connector arranged in this gap, An object of the present invention is to provide a vehicle steering system capable of improving wiring capacity and signal transmission amount.

(Structure of the Invention) In this invention, the cancel cam is axially divided into two inside the roll connector hole to form a first cancel cam on the switch base side and a second cancel cam on the steering wheel side. The first and second cancel cams are relatively movable in the axial direction, immovable in the rotation direction, and are coupled so as to rotate integrally with the steering wheel, so that the first cancel cam and the second cancel cam are connected. It is a steering device for a vehicle in which a spring for absorbing a shock is provided between the two.

(Effect of the Invention) According to this invention, since the cancel cam is axially divided into two inside the hole of the roll connector, a shock suction spring can be provided in this divided portion.
As a result, the conventional axial separation between the switch base and the cancel cam becomes unnecessary, and the gap between the predetermined end surface of the steering shaft and the lower surface of the steering wheel can be formed as large as possible.

Therefore, it is possible to set the thickness of the roll connector arranged in the above-mentioned interval to be larger than that of the conventional structure, and it is possible to improve the wiring capacity and the signal transmission amount of the roll connector. is there.

Embodiment An embodiment of the present invention will be described in detail below with reference to the drawings.

The drawings show a steering device of a vehicle. In FIGS. 1 and 2, a combination switch body 3 having a turn switch lever 1 and a wiper switch lever 2 is provided, and the combination switch body 3 is provided on a lower surface 4a of a steering wheel 4. It is arranged on the outer periphery of the upper end of the steering shaft 5.

A switch base 6 is fixed to the combination switch body 3 described above, and the switch base 6 is arranged around the upper end of the steering shaft 5.

Further, a cancel cam lever 7 is rotatably disposed on the upper surface of the combination switch body 3 described above, and when the cancel cam 8 moves in association with the movement of the turn switch lever 1, the cancel pin 8a of the cancel cam 8 is released. , 8a
Is configured to press the inward projections 7a, 7a of the cancel cam lever 7 to cancel (release).

Further, the predetermined end surface 5a of the steering shaft 5 described above.
And a lower surface 4a of the steering wheel 4 is provided with a roll connector 9 for signal transmission, and the roll connector 9 has a plurality of flange portions 9a ... Bolt up to the combination switch body 3.

By the way, the cancel cam 8 is the roll connector 9
The hole 9b is divided into two in the axial direction to form a first cancel cam 11 on the switch base 6 side and a second cancel cam 12 on the steering wheel 4 side. Is relatively movable in the direction of rotation, is not relatively movable in the direction of rotation, and is coupled so as to rotate integrally with the steering wheel 4.

Here, the connection between the above-mentioned second cancel cam 12 and the lower surface 4a of the steering wheel 4 is as follows.

That is, the plurality of clips 13 and 13 are integrally formed on the upper end surface 12a of the second cancel cam 12, and the plurality of clips 13 and 13 are press-fitted into the predetermined locking holes in the lower surface 4a of the steering wheel 4 described above. , Steering wheel 4, second cancel cam 12 and first
The cancel cam 11 and the cancel cam 11 are configured to rotate integrally.

Moreover, a shock absorbing spring 14, a so-called cancel cam spring, is interposed between the first cancel cam 11 and the second cancel cam 12 in the hole inside 9b of the roll connector 9 between the cams 11 and 12. I have set up.

The above-described roll connector 9 has a first wire harness 15 from the power source to the roll connector 9 and a second wire harness (not shown) from the roll connector 9 to the contact plate of the steering wheel 4. A connection point between one end of the roll connector 9 and the second wire harness is configured to be rotatable together with the steering wheel 4. In the figure, 10 is a column cover.

In this way, the cancel cam 8 described above is connected to the roll connector 9
Since it is divided into two in the axial direction inside the hole 9b, the shock absorbing spring 14 can be interposed in this divided portion, and as a result, as shown in FIG. 3, there is a gap between the conventional switch base and the cancel cam. The axial separation dimension l (see FIG. 4) is completely unnecessary, and the predetermined end surface 5a of the steering shaft 5 and the lower surface 4a of the steering wheel 4 are eliminated.
The distance between and can be formed as large as possible.

Therefore, it is possible to set the thickness h1 of the roll connector 9 arranged within the above-mentioned interval to be relatively larger than the thickness h2 of the conventional structure, h1> h2, and the wiring capacity and the signal transmission amount of the roll connector 9 can be set. There is an effect that it is possible to improve, and, for example, in addition to the above-mentioned three circuits in total, it is possible to additionally add a switching circuit such as an auto cruise switch circuit.

[Brief description of drawings]

The drawings show an embodiment of the present invention, FIG. 1 is a front view showing a steering device of a vehicle, FIG. 2 is a sectional view of the steering device, FIG. 3 is an enlarged view of a main part of FIG. FIG. 1 is an explanatory diagram showing a conventional steering device for a vehicle. 4 ... Steering wheel 6 ... Switch base, 8 ... Cancel cam 9 ... Roll connector 11 ... First cancel cam 12 ... Second cancel cam 14 ... Spring

Claims (1)

[Scope of utility model registration request] 1. A cancel cam is axially divided into two inside a hole of a roll connector to form a first switch base side.
A cancel cam and a second cancel cam on the steering wheel side are formed, and the first and second cancel cams can be relatively moved in the axial direction but cannot be relatively moved in the rotating direction, and the steering wheel is also provided. A steering device for a vehicle, which is connected to rotate integrally with the first cancel cam and a spring for shock absorption provided between the first cancel cam and the second cancel cam.