JPH0224349Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a steering device used in automobiles, etc., and in particular, a steering device in which a steering pad arranged at the center of the steering wheel is fixed regardless of rotation of the steering wheel. This is related to.

In recent years, control devices for automobiles and the like have been increasingly electronically controlled, and their operation units have come to be located near the steering wheel so that they can be easily operated by the driver. The steering pad, which is the center of the steering wheel, is mentioned as one of the operating parts, but since the steering pad generally rotates together with the steering wheel and steering shaft, it is necessary to provide the operating part here. The steering pad must always be fixed by some means. Therefore, various methods have been considered as means for fixing the steering pad, but all of the existing methods have drawbacks such as complicated construction, increased cost, and the need for an operating section during operation.

The present invention has been devised in view of the above-mentioned points, and aims to provide a steering device having a simple structure and in which a steering pad can be securely fixed.

An embodiment of the present invention will be described below based on the drawings.

FIG. 1 is a sectional view of the embodiment. In the figure, a pipe 2 fixed to a main body such as an automobile is disposed within a column cover 1, and a steering shaft 3 is inserted through the pipe 2. The steering shaft 3 has a boss portion 4a of a steering wheel 4 fixed to it by a nut 5, and a ring-shaped member to be fixed 7 is rotatably supported by a nut 8 at its tip via a bearing 6. The steering shaft 3 is rotatably supported by a bearing 9 relative to the pipe 2, and a ring-shaped fixing member 10 having approximately the same outer diameter as the fixed member 7 is integrally attached to the upper end of the pipe 2. We are preparing for

The fixed member 7 and the fixed member 10 both have a cylindrical portion 7 through which the steering shaft 3 penetrates.
a, 10a, and ring-shaped first and second rocking members 11, 12 are respectively attached to the cylindrical portions 7a, 10a by universal joints such as gimbal mechanisms.

FIG. 2 shows an example of a universal joint, in which two parts are opposed to the fixed inner ring 13.
An intermediate ring 15 is coaxially supported by a bearing 14 at one location, and an outer ring 17 is supported by bearings 16 at two opposing locations perpendicular to the bearing 14 on the intermediate ring 15. . As a result, the inner ring 13 and the outer ring 1
7 does not rotate but can swing freely. If this mechanism is adopted in the embodiment shown in FIG.
The intermediate ring 15 corresponds to rings 18 and 19, and the outer ring 17 corresponds to swing members 11 and 12, respectively.

Further, first and second gear portions 11a and 12a are formed on opposing surfaces of the outer peripheral portions of the swinging members 11 and 12, and these gear portions can mesh with each other. The first and second pressing members 20 and 21 provided on the upper and lower surfaces of the steering wheel 4 engage the first and second gear parts 11a and 12a, and the first and second pressing members 20, Reference numeral 21 indicates a support shaft 20 attached to the bearing portions 4b and 4c provided on the steering wheel 4.
a, a first rotatably supported by 21a;
It consists of a second roller, and its tapered outer circumferential surface is the step part 11 of the first and second swinging members 11 and 12.
b, rolls on the 12b plane. Therefore, as shown in FIG. 1, the first and second swinging members 11 and 12 are separated from each other by the first and second pressing members 20 and 21.
The first and second gear portions 11a and 12a mesh on opposite sides of the pressing members 20 and 21, respectively.

Next, the operation of the above embodiment will be explained.

When the steering wheel 4 is rotated, the steering shaft 3 fixed thereto by a nut 5 rotates together. At that time, the first and second pressing members 20 and 21 are connected to the first and second swinging members 11 and 12.
The first and second gear parts 11a of the swinging members 11 and 12, which are located on the opposite side of the rolling part, roll on the top and separate the first and second swinging members 11 and 12.
12a meshes with each other, so the first and second swinging members 1
1 and 12 are integrated in the direction of rotation about the steering shaft 3. Therefore, the fixed member 7
A fixed member 10 fixed to the pipe 2, a first swinging member 11 supported by the fixed member 10 at a universal joint, a second swinging member 12 connected via a gear part, and a second swinging member 12 connected via a gear part. The steering pad 22, which is fixed in turn through a universal joint that supports the swinging member 12 and is fixed on the fixed member 7, is also immovable.

The universal joint in the above embodiment is not limited to the gimbal mechanism as shown in FIG. 2, and various joints can be used as long as they are capable of regulating rotation and swinging. Furthermore, although a rolling roller is used as the pressing member, a pin that is biased by a spring and slides on a swinging member may also be used.

The present invention is as described above, and the steering pad provided coaxially with the steering shaft is prevented from rotating even when the steering wheel rotates by using two swinging members having gear parts that can engage with each other. Therefore, the operation is reliable, the structure is simple, the assembly is easy, and it can be manufactured at low cost.

[Brief explanation of drawings]

FIG. 1 is a sectional view of an embodiment of the present invention, and FIG. 2 is a perspective view showing an example of a universal joint. 3... Steering shaft, 4... Steering wheel, 6... Bearing, 7... Fixed member, 10... Fixed member, 11... First swinging member, 11a... First gear part, 12 ...Second swinging member, 12a...Second gear portion, 13...Inner ring, 14...Bearing, 15...Intermediate ring, 16
... bearing, 17 ... outer ring, 20 ... first pressing member, 21 ... second pressing member.

Claims (1)

[Scope of utility model registration request] a steering shaft that rotates together with the steering wheel; a fixing member; a first universal joint coaxially attached to the fixing member with the steering shaft;
a ring-shaped first swinging member disposed coaxially with the steering shaft at the universal joint and having a first gear portion on the upper surface of the outer periphery; and a cover disposed so as to be rotatable relative to the steering shaft. a fixing member; a second universal joint attached to the fixed member coaxially with the steering shaft; a ring-shaped second swinging member having a second gear part that meshes with the first gear part; A steering wheel comprising first and second pressing members that press the first and second swinging members so as to engage parts of the first and second gear parts while moving on the moving member. Device.