JPS6037891Y2 - Tilt type steering device for automobiles - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a tilt-type steering device for an automobile.

Various tilt-type steering devices have already been developed for automobiles that can adjust the steering bundle position up or down to find the appropriate driving position according to the driver's physique and preferences, but they generally have extremely complex structures and are expensive. It has its drawbacks.

The object of the present invention is to provide a device that can satisfy the tilting function with a simple configuration, and will be described below with reference to the accompanying drawings.

FIG. 1 is a side view schematically showing a tilt type steering device according to the present invention, in which 1 is a steering bundle, 2 is a steering shaft, and the steering shaft 2 is rotatable via a bearing on a steering column 3. It is supported as such.

The steering column 3 is supported at its upper part by a vehicle body side member 17 via a locking mechanism (described later) so that it can be moved up and down guided by a guide groove 5, and its lower part is supported by a rubber member 17 as shown in FIG. The bushing 6 made of an elastic material such as It is configured to be slidable in the axial direction in part B.

The lower end of the steering shaft 2 passing through the steering column 3 is connected to an intermediate shaft 8 by a joint 7 below the lower support part B, and the intermediate shaft 8 is connected to a pinion shaft 10 via a joint 9.
When the steering bundle 1 rotates, the steering shaft 2, intermediate shaft 8, and pinion shaft 10 rotate, and the rack shaft 12 meshing with the pinion 11 slides in the axial direction, thereby enabling steering. .

A specific structural example of the lock operation mechanism of the upper support portion of the steering column 3 is shown in FIG.

That is, in FIG. 2, reference numeral 4 denotes a column guide fixed to the steering column 3 by welding or the like. The column guide 4 is provided with a guide groove 5, and a bolt 14 is attached to a bracket 13 fixed to a vehicle body side member 17. passes through the guide groove 5 of the column guide 4.

A cylindrical member 15 is fitted on the outer periphery of the bolt 14, a flange portion 15a1 is formed at one end of the cylindrical member 14, a threaded portion 15b is formed on the outer periphery of the other end, and a lock lever is attached to the threaded portion 15b. By screwing and tightening the nut portion 16b of 16, the column guide 4 is connected to the flange 115a and the lock lever 1.
6 with the nut part 16b, and the steering column 3 is locked by the friction, and the lock lever
By rotating the handle 16a and loosening the nut 16b, the steering column 3 is released and the steering column 3 can be adjusted by vertically moving along the guide groove 5.

In the above configuration, when the steering bundle 1 is rotated in the vertical direction, the steering column 3 and the steering shaft 2 supported by it rotate around the lower support part B, but at that time, the lower end of the steering shaft 2 The steering shaft 2 is forced to displace in the axial direction, restricted by the locus of the distal end of the intermediate shaft 8 that rotates around the joint 9.

Therefore, in the present invention, the guide groove 5 of the upper support portion A of the steering column 3 is configured to have an arc shape that matches the axial displacement of the steering shaft 2 when the steering shaft 2 rotates, as shown in FIG.

According to the present invention configured as described above, when the angle of the steering shaft is adjusted up and down, the steering shaft and steering column rotate up and down and slightly slide in the axial direction at the center of rotation, and the tilt operation is performed. It can be performed extremely smoothly, the shaft configuration and shaft support configuration are extremely simple, and the assembly work can be significantly simplified, and costs can be significantly reduced. It can have an effect.

Note that the locking mechanism is not limited to the embodiment shown in FIG. 2, and any configuration may be adopted within the scope of the purpose of the present invention.

[Brief explanation of the drawing]

Fig. 1 is a side explanatory view showing an embodiment of the present invention, Fig. 2 is a sectional view showing an example of a lock operation mechanism provided on the upper support part A of Fig. 1, and Fig. 3 is a lower support part shown in Fig. 1. 3 is a sectional view showing a specific structural example of part B. FIG. 1... Steering bundle, 2...
Steering shaft, 3... Steering column, 5... Guide groove, 6... Bush, 7, 9... Joint, 8...・
...Intermediate shaft, 10...Pinion shaft.

Claims (1)

[Scope of utility model registration request] In the tilt type steering device, the steering force transmission system between the steering shaft and the pinion of the gearbox has at least two joints, and the vertical movement center of the steering shaft does not coincide with the joint center of the lower end of the steering shaft. The shaft is configured to be slidable in the axial direction at the center of the vertical movement of the steering shaft, and the guide groove that guides and regulates the vertical movement of the steering shaft is arranged in a circular arc that matches the axial displacement caused by the rotation of the steering shaft. A tilt-type steering device for an automobile characterized by being configured in a shape.