JPH06485B2 - Steering device - Google Patents

Description

The present invention relates to a steering device used in an automobile or the like, and more particularly to a steering device in which a steering pad arranged at the center of a steering wheel can stand still regardless of the rotation of the steering wheel. It is a thing.

In recent years, control devices for automobiles and the like are being electronically controlled, and their operation units have been provided near the steering wheel so that the driver can easily operate them. The steering pad, which is the central portion of the steering wheel, is mentioned as one of the operating parts. Generally, the steering pad rotates integrally with the steering wheel. It has been proposed to always keep the steering pad stationary by some means regardless of rotation. Therefore, various forms of fixing means for the steering pad have been considered, but all of the existing ones have a complicated structure and require a long time for assembly work, resulting in an increase in cost.
It has the drawback of causing operation noise.

The present invention has been made in view of the above points, and it is an object of the present invention to provide a steering device having a simple structure in which a steering pad can be reliably stopped.

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

FIG. 1 is a sectional view of an embodiment of the present invention. Column cover 1
A pipe 2 is arranged inside, and a steering shaft 4 is rotatably pierced through a pipe 3 through a bearing 3, and a boss portion 5 a of a steering wheel 5 is fixed to the steering shaft 4 by a nut 6. ing. A ring-shaped fixing member 7 is fixed to the end of the pipe 2, and a ring-shaped fixed member 9 having the same diameter as the fixing member 7 is attached to the tip of the steering shaft 4 via a bearing 8. It is rotatably attached so as to face the fixing member 7.

Engaging teeth 7a and 9a having the same pitch and coaxial with each other are formed on the entire outer surfaces of the fixed member 7 and the fixed member 9, respectively. The steering wheel 5 is rotatably supported by a rotating member 12 that moves around the outer circumference of the fixed member 7 and the fixed member 9. The outer peripheral surface of the rotating member 12 has engaging teeth of the fixed member 7 and the fixed member 9. Many engaging teeth 12a having the same pitch as 7a and 9a are formed.

The rotary member 12, the fixed member 7 and the fixed member 9 are formed with a large number of engaging teeth 10a having the same pitch as those of the engaging teeth 7a, 9a, 12a on the entire inner peripheral surface. One timing belt 10 meshed at the same time is wound. That is, the upper end and the lower end of one timing belt 10 are simultaneously engaged with the engaging teeth 7a, 9a, 12a.

To attach the rotating member 12 to the steering wheel 5,
This is performed by rotatably mounting a rotating member 12 on a support shaft 11 provided on the lower surface of the steering wheel 5 in parallel with the steering shaft 4.

Further, although not shown, a steering pad 13 on which an operation section for controlling electronic equipment such as a switch is arranged is fixed on the upper surface of the fixed member 9.

FIG. 2 is a diagram showing the interlocking principle of the fixed member 7, the fixed member 9, the timing belt 10, and the rotating member 12 in FIG. 1, and when the steering wheel 5 integrally rotates around the steering shaft 4, it is supported. The rotating member 12 mounted on the shaft 11 also moves around the steering shaft 4 in the direction of arrow A, for example. At this time, since the fixing member 7 is fixed to the vehicle body by the pipe 2, the rotating member 12 rolls on the timing belt 10 in the arrow B direction. On the other hand, since the fixed member 9 is connected to the steering shaft 4 via the bearing 8, the fixed member 9 is free from the rotation of the steering shaft 4. However, since the fixed member 9 is engaged with the engaging teeth 10a of the timing belt 10, the fixed member 9 is fixed. It is integrated with the member 7 and does not rotate. Therefore, even if the steering wheel 5 and the steering shaft 4 rotate, the steering pad 13 is always fixed at a fixed position.

The present invention is as described above, and since the fixed member is coaxially connected to the fixing member by the timing belt,
Since the steering pad does not rotate even if the steering wheel rotates, the operation of the operation unit on the steering pad is extremely easy and the structure is simple, so that the assembling workability is good and the manufacturing can be performed at a low cost. Further, by using a flexible resin material or the like for the timing belt, it is possible to reduce operation noise during steering operation. Further, since one timing belt is wound around the fixed member and the fixed member which are coaxially arranged, one timing belt is meshed with the fixed member and the fixed member at the same time, and the power is directly applied by the timing belt. Transmitted. Therefore, the fixing member and the fixed member can be surely synchronized with each other, and thus the steering pad can be fixed at a fixed position at all times.

[Brief description of drawings]

FIG. 1 is a sectional view of an embodiment of the present invention, and FIG. 2 is a perspective view for explaining the operating principle of the essential parts of the present invention. 4 ... Steering shaft, 5 ... Steering wheel, 7 ... Fixed member, 7a ... Engaging tooth, 9 ... Fixed member, 9
a ... Engaging teeth, 10 ... Timing belt, 10a ... Engaging teeth, 12 ... Rotating member, 13 ... Steering pad.

Claims (1)

[Claims] 1. A steering shaft which rotates together with a steering wheel, and a ring-shaped fixing member which is fixed to the vehicle body side in a free state and has a large number of engaging teeth of equal pitch on the entire outer circumference. A ring-shaped fixed member that is rotatably attached to the steering shaft and has engaging teeth of the same pitch as the engaging teeth of the fixing member and formed on the entire outer circumference, and is rotatable on the steering wheel. A rotary member that is pivotally supported on and that moves around the outer periphery of the fixed member and the fixed member, and a plurality of engaging teeth having the same pitch as the engaging teeth of the fixed member and the fixed member are formed on the entire inner peripheral surface, One timing belt that is meshed with these at the same time as the engaging teeth and is wound around the rotating member, a switch fixed to the fixed member, and the like. Steering device comprising a steering pad is attached, by comprising a.