JP2591096Y2 - Structure of bush of torsion bar for cab tilt of automobile - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a bush of a torsion bar for a cab tilt of an automobile for mounting a torsion bar on a tilt hinge bracket.

[0002]

2. Description of the Related Art Techniques for tilting a cab of a cab overtrack for improving maintainability and the like are generalized, and when the cab is tilted, a spring for biasing in a tilt direction is provided so that the cab can be easily tilted.

As the above-mentioned spring, a coil spring or a torsion bar is used. For example, as shown in FIG. 3, one end of each of the tilt hinge brackets 12, 12 attached to the distal end of the frame 11 is 12a. And 12b
A technique is known in which two torsion bars 13 are fixed to each other, an arm 14 is attached to each of the torsion bars 13, and the cab 15 is biased in the direction A to tilt the cab 15 at the tip of the arm. I have.

However, in order to position and fix the torsion bar 13 on the bracket 12, FIGS.
With reference to, the torsion bar 13 is passed through the hole 12c of the bracket 12 so that the bush 16 is divided into two.
7 is engaged with the main body of the torsion bar 13, inserted into the hole 12c, and the bush 16 is fixed with a bolt.

The bushes 16 and 17 are formed in
6a and the projection 17a are engaged, so that the torsion bar 13 and the bushes 16
Since it is not possible to assemble unless it is put in c, the workability of assembling is not good. In addition, the applicant of the present invention has published Japanese Utility Model Publication No. 60-2326.
Although there is Japanese Patent Publication No. 0, the technique relates to the tilt hinge bearing of the cab, and does not relate to the problem of the present application.

The bush disclosed in Japanese Utility Model Laid-Open No. 15794/1991 has no torsion bar positioning function, and therefore requires a torsion bar positioning component. Japanese Patent Application Laid-Open No. Sho 62-171534 discloses a mounting flange, but does not have both a positioning function of a torsion bar and a bushing function.

[0007]

Accordingly, an object of the present invention is to insert a bush of a split torsion bar into a tilt hinge bracket to attach a torsion bar, thereby providing a bushing function and a torsion bar positioning function. It is an object of the present invention to provide a structure of a bush of a torsion bar for cab tilt having the following.

[0008]

According to the present invention, there is provided a structure of a bush of a torsion bar for a cab tilt of an automobile for mounting a torsion bar on a tilt hinge bracket. Wherein the first part comprises a semi-cylindrical first main body,
A mounting flange extending in a vertical direction from an end of the first main body, the mounting flange having a hole into which a mounting screw is inserted, and engaging the first main body with a second portion of the first main body. The mating surface has a first concave portion formed on the side opposite to the mounting flange side, and a second portion also extends from an end of the semi-cylindrical second main body in a direction opposite to the mounting flange. It has a ring-shaped convex portion, and a second convex portion that engages with the first concave portion is formed on an engagement surface of the second main body portion with the first portion.

[0009]

In the structure of the bush of the torsion bar for the cab tilt of the automobile constructed as described above, first, the second
When the main part of the part is inserted into the hole, the second part engages with the surface of the tilt hinge bracket with a semi-ring-shaped convex part and stops.

Next, when the first portion is inserted, the first concave portion pushes the second convex portion to determine the axial position.

Therefore, the position of the torsion bar in the rotation direction is checked, and the mounting flange is fixed with bolts. The first part and the second part are engaged with the concave and convex and are fixed by the mounting bolts, so that they do not fall off.

Therefore, according to the present invention, in addition to the bush function, the bush has the function of positioning the torsion bar, so that the number of parts is reduced and the mounting work is facilitated.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

In FIGS. 1 and 2, the first portion 1 and the second portion 2 are formed in two at the center line engaging with the main body of the torsion bar.

A mounting flange 4 extending vertically from an end of the first main body 3 is formed, and a first surface is provided on an engagement surface S with the second portion on a side opposite to the mounting flange 4. Recess 1
a is provided, and a mounting hole 5 is formed in the mounting flange 4.

The second portion 2 has a semi-cylindrical second main body portion and a ring-shaped convex extending from the second main body portion 8 in a direction opposite to the mounting flange 4 of the first main body portion. The second projection 2a is formed on the engagement surface S with the first portion.

Therefore, first, the second portion is inserted into the hole of the bracket after penetrating the torsion bar through the tilt hinge bracket (not shown), and then the position of the torsion bar in the rotational direction is roughly determined, and the first portion is inserted. Then, if necessary, the position of the torsion bar in the rotation direction may be corrected, and the first portion may be fixed with the mounting bolt.

[0018]

[Effects of the Invention] Since the present invention is configured as described above, the split torsion bar bush can be inserted one by one into the hole of the tilt hinge bracket, so that the positioning at the time of mounting the torsion bar is easy. It is.

Therefore, the torsion bar can be mounted with high accuracy, and the number of steps can be reduced.

[Brief description of the drawings]

FIG. 1 is a front view of a bush of a torsion bar showing one embodiment of the present invention.

FIG. 2 is a side sectional view of FIG.

FIG. 3 is a schematic view of a torsion bar mounting showing an example of a conventional technique.

FIG. 4 is an exploded front view of a main part of FIG. 3;

FIG. 5 is a front view showing an example of a conventional bush.

FIG. 6 is a side sectional view of FIG. 5;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1, 16 ... 1st part 2, 17 ... 2nd part 3 ... 1st main part 4, 19 ... Mounting flange 8 ... 2nd main part 9 ... Semi-ring-shaped convex part 11 ... Frame 12 ... Tilt Hinge bracket 13 ... Torsion bar 15 ... Cab

Claims (1)

(57) [Scope of request for utility model registration] 1. A structure of a bush of a cab tilt torsion bar for an automobile for attaching a torsion bar to a tilt hinge bracket, comprising a first part and a second part divided into two parts, a first part. Comprises a semi-cylindrical first main body, and a mounting flange extending vertically from an end of the first main body, the mounting flange having a hole into which a mounting screw is inserted; An engagement surface of the first main body with the second portion has a first recess formed on the side opposite to the mounting flange side, and the second portion also has a semi-cylindrical end of the second main body. A semi-ring-shaped convex portion extending in a direction opposite to the mounting flange from the second portion, and an engagement surface of the second main body portion with the first portion engages with the first concave portion. A cab for automobiles, characterized in that a convex portion is formed. The structure of the bush of the option bar.