JPS5943168Y2 - tilt steering column - Google Patents

Description

[Detailed description of the invention] The present invention relates to a tilt type steering device in which the lower end of the steering shaft is connected to a steering gear via a universal joint, and the steering shaft can be tilted in the radial direction of the steering shaft with the universal joint as the rotation center. .

Conventionally, in this type of device, one part of the steering column is tiltably supported by a support bracket on the vehicle body, but if the mass from the support part to the steering wheel side is large, the vibration of the steering wheel becomes large when driving at high speed. Sometimes.

It was found that vibrations in the steering wheel could be solved by fixing the steering column to the vehicle body in two places, but in this case, each support bracket would require a tilt mechanism, and each tilt mechanism would have to be operated to tilt the steering column. Must be.

The purpose of the present invention is to provide a tilt-type steering device that prevents vibration of the steering wheel and allows two support brackets to be tilted with one operation.The tilt mechanism of the two support brackets is controlled by a link mechanism. By communicating with each other and operating the operating lever of one of the support brackets, both tilt mechanisms can be operated simultaneously.

To explain this with respect to the embodiment shown in the figure, as shown in FIG. 1, a steering shaft 2 with a handle 1 fixed to its upper end is connected at its lower end to a steering gear (not shown) via a universal joint 3, It is rotatably supported by column 4.

The steering column 4 is attached to the vehicle body part 7 by two support brackets 5 and 6.

The two support brackets 5 and 6 each hold the steering column 4 movably in its radial direction by a structure to be described later, and the steering device tilts up and down with the center O of the universal joint as the center of rotation. 1 indicated by a chain line
' and 1'' positions.

An operating lever 8 is attached to the first support bracket 5, a lever 9 is attached to the second support bracket 6, both levers are connected by a connecting rod 10 to form a linkage mechanism, and the operating lever When 8 is moved in the direction of the arrow, the link mechanism also moves in the direction of the arrow, occupying the fixed position shown by the solid line and the released position shown by the chain line.

As shown in FIG. 2, the first support bracket 5 has a mounting portion 11. A bracket body made of a steel plate consisting of a body part 12 button and a reinforcing part 13, an operating lever 8, a bolt 14, and a nut 15.
, a tightening means whose main members are lever mounting bolts 16 and the like.

The body part 12 is a letter plate bent into a U-shape, and both ends thereof are bent at right angles to form the mounting part 11.

The body part 12 on the operating lever 8 side and one end of the mounting part 11 are connected by a reinforcing part 13.

The mounting part 11 is covered with a mounting bracket 17 having a U-shaped cross section, and a bolt hole (not shown) j) provided in the mounting part 17 and a U-shaped hole (not shown) provided in the mounting part 11 are provided.
The bracket body is attached to the vehicle body using.

A mounting bracket 18 fixed to the steering column 4 by welding or the like is slidably fitted inside the body 12.

The mounting bracket 18 has a cylindrical part 19 button and two side plates 1.
9a and 19b are provided, and the cylindrical portion 19 regulates and reinforces the spacing between both side plates, and a portion j (bolt holes are provided) of the side plate facing the cylindrical portion 19.

Corresponding to this bolt hole, an elongated hole 20 extending in the radial direction of the steering column 4 (vertical direction in FIG. 2) is provided in the body 12, and the bolt 14 is inserted into the elongated hole 20 and the bolt hole of the mounting bracket. It is inserted through.

A nut 15 is screwed into the threaded portion of the bolt 14,
The head of the nut 15 is provided with a conical surface and has a button, and an operating lever 8 having a female conical surface that is in close contact with this conical surface is fixed to the nut 15 with a lever mounting bolt 16. When moved, the nuts 15 rotate together to tighten and secure the mounting bracket 18 to the body 12 or to loosen and release it so that it can be moved in the direction of the elongated hole 20.

The seat side of the bolt 140 head has a width (
The bolt 14 is ground down by a certain height, leaving a step (step), which prevents the bolt 14 from rotating.

In the figure, reference numeral 21 indicates a pin that pivotally connects the connecting rod 10 to one end of the operating lever 8, 22 and 23 are washers, and 24 is a coil spring.
Locking one end to the body portion 12 and the other end to the mounting bracket 18, biasing the mounting bracket 18 in the opposite direction in FIG.
When the bolt 14 is loosened, the movement of the mounting bracket 18 is cushioned or assisted so that the mounting bracket 18 does not tilt downward suddenly.

The second support bracket 6 shown in FIG. 3 also has a bracket body consisting of a mounting part 25, a body part 26, a reinforcing part 27, a lever 9, a bolt 28, a nut 29, and a lever mounting bolt 3.
The bracket body is substantially the same as only the left portion of the bracket body in FIG.

The steering column 4 is fixed by welding or the like to a mounting bracket 31 which has a continuous circular arc part and a flat mounting part, and a bolt hole provided in the mounting bracket 31 and a vertically long hole provided in the body part 26 of the support bracket. Bolt 2 through long hole 32
8 passes through it, and the bolt 28 is screwed into the nut 29.

The nut 29 is integrated with the lever 9 by a lever mounting bolt 30, similar to the nut 15 in FIG.

In the figure, reference numeral 33 indicates a pin that pivotally connects the connecting rod 10 to the lever 9;
34.35 is a washer.

Note that the second support bracket 6 may have the same structure as the first support bracket 5, and is not limited to the structure shown in the drawings. Any device may be used as long as it has a loosening tightening means.

Further, in the embodiment, an operation lever is provided on the support bracket on the handle side, but an operation lever operated by a cable connected to the foot pedal may be provided on the support bracket on the universal joint side.

Note that the steering shaft supported inside the steering column is not shown in the second fixed rotation and FIG. 3.

The tilt-type steering device of the present invention configured as described above has the steering column attached to the vehicle body using two support brackets, so it has sufficient support rigidity and prevents vibration of the steering wheel during high-speed driving. In addition, each support bracket has a long hole button that can tilt the steering column and a tightening means, and the two tightening means are connected by a link mechanism, so that the two support brackets can be released separately.
There is no need for fixation, and two support brackets are activated by one operation, which has the effect of simplifying the operation.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a side view showing how it is installed, and FIG. 2 is a cross-sectional view taken along the line ■-■ in FIG. 1.
FIG. 3 is a cross-sectional view taken along the line ■--■ in FIG. 1. Explanation of symbols of main parts, 2... Steering shaft, 3... Universal joint, 4... Steering column 5.6... Support bracket, 8...・・・
...Operation lever 9...Lever 10...
・・Connecting rod, 14, 28・・・・Bolt, 15, 2
9...Nut, 16.30...Lever mounting bolt, 20°32...Elongated hole.

Claims (1)

[Scope of utility model registration request] In a tilt type steering device in which a lower end of a steering shaft is connected to a steering gear via a universal joint, and the steering shaft can be tilted in a radial direction of the steering shaft with the universal joint as a rotation center, the steering shaft is rotatably supported. The steering column is attached to the vehicle body part by two support brackets, each of the two support brackets has an elongated hole capable of tilting the steering column in the direction, and a tightening means, and the two tightening means are connected to a link mechanism. A tilt type steering device characterized in that both tightening means are operated simultaneously by operating one of the tightening means connected to each other.