JP2526437Y2 - Cab Mount Insulator Structure - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a cab-mount insulator constituting a cab tilt device provided in a cab-over type vehicle.

[0002]

2. Description of the Related Art A cab tilt device provided in a cab-over type vehicle shown in FIG. 1 is shown. Tilt hinge brackets 2 are provided at both ends of a side member 1 constituting a chassis member. FIG. 1 shows only one tilt hinge bracket. One end of the torsion bar 3 protrudes outward and is integrated with the arm anchor 4 in a torsion direction via serrations. The arm anchor 4 is fixed to the bracket 2 with bolts or the like. Although not shown in the drawing, the other end of the torsion bar 3 is integrated with the cab mount lever assembly 5 in a torsion direction via serrations. The cab mount lever assembly 5 is supported by the tilt hinge bracket 2 via a cab mount insulator, generally indicated by 6, which is the object of the present invention, and cab mount levers 7 are attached to both sides of the cab mount lever assembly 5. . In the figure, only one cab mount lever is shown. The cab (not shown) is supported by the cab mount lever 7. A shock absorber 8 is provided between the cross member 1 and the cab mount lever assembly 5.

In a cab tilting device constructed as described above, when the cab is fixed to the chassis side by a locking device (not shown), the torsion bar 3 is twisted by its own weight and the locking device is removed, as is well known. The cab is turned forward by the torsional moment.

FIGS. 2 and 3 show, for example, Japanese Patent Application Laid-Open No. 58-128.
No. 971 and Japanese Utility Model Application No. 2-29030 show a conventional cab mount insulator. A cab mount insulator 6 includes an inner cylinder 9, an outer cylinder 10, and a bush fixed between the inner cylinder 9 and the outer cylinder 10. Rubber 11, laterally long gap 1 formed at the upper and lower parts of bush rubber 11
1A and 11B, and a rebound stopper rubber 12 disposed in the upper space 11A. A plate 13 made of a steel plate is embedded in the rebound stopper rubber 12 in a direction parallel to the axis thereof. The plate 13 protrudes from the rebound stopper rubber 12, and the protrusion 13 a is formed in the radial direction of the outer cylinder 10. It is bent outward in the radial direction so as to face the direction of the flange 10a.

[0005] The cab mount insulator 6 is provided with such a rebound stopper rubber 12 because the cab mout lever assembly 5 in the cab tilt device described above, and therefore, the upward movement of the cab is restricted and the vibration is damped. In order to make

[0006]

However, in the case of the conventional cab mount insulator having such a structure,
Since the rebound stopper rubber 12 is not restrained, there is a problem that the rubber 12 moves around between the inner cylinder 9 and the outer cylinder 10 during running of the vehicle, generating an abnormal noise and causing abnormal wear of the rebound stopper rubber 12.

[0007]

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and according to the present invention, a shaft of a river mound stopper rubber disposed in a gap of a bush rubber of a cab mount insulator. A plate-like body is embedded in a direction parallel to the center, the plate-like body is projected from the rebound stopper rubber, the protruding portion is bent radially outward, and a tip of the bent portion is an outer cylinder of a cab mount insulator. And a structure formed by caulking on the radial flange portion.

[0008]

The upward movement of the cab is limited by the buffering action by the rebound stopper rubber disposed in the gap of the bush rubber of the cab mount insulator, and in particular, the plate-like body embedded in the rebound stopper rubber is outside the cab mount insulator. Since the cylinder is caulked to the radial flange portion, the movement of the rebound stopper rubber during traveling of the vehicle is prevented.

[0009]

4 to 6 show an embodiment of the present invention. As in the case of a conventional cab mount insulator, an inner cylinder 9, an outer cylinder 10, and a bush rubber fixed between the inner cylinder 9 and the outer cylinder 10 are shown. 11, the upper gap 1 among the horizontally long gaps 11A and 11B formed at the upper and lower portions of the bush rubber 11;
1A and a bound stopper rubber 12. A part of the rebound stopper rubber 12 is thickened, and a lower surface of the thick part 12a is a gap 11A.
At the bush rubber 11. A plate 13 made of a steel plate is embedded in the rebound stopper rubber 12 in a direction parallel to its axis, and the plate 13 protrudes from the rebound stopper rubber 12, and the protruding portion is bent outward in the radial direction. The tip 13a of the bent portion is caulked to the radial flange 10a of the outer cylinder 10 of the cab mount insulator.

[0010]

[Effect of the Invention] Since the plate-like body embedded in the rebound stopper rubber is caulked and fixed to the outer cylinder of the cab mount insulator, the movement of the rebound stopper rubber during the running of the vehicle is restricted, and abnormal noise is generated. ,
Abnormal wear of the rebound stopper rubber is prevented.

[Brief description of the drawings]

FIG. 1 is a front view showing a cross section of a part of a cab tilt device provided in a cab-over type vehicle.

FIG. 2 is a perspective view showing a conventional cab mount insulator.

FIG. 3 is a sectional view showing a conventional cab mount insulator.

FIG. 4 is a front view of the cab mount insulator according to the embodiment of the present invention.

FIG. 5 is a view as seen from the arrow S in FIG. 4;

FIG. 6 is a sectional view taken along line AA of FIG. 4;

[Explanation of symbols]

 Reference Signs List 6 cab mount insulator 9 inner cylinder 10 outer cylinder 11 bush rubber 12 rebound stopper rubber 13 plate 13a crimping part

Continued on the front page (51) Int.Cl. ⁶ Identification number Reference number in the agency FI Technical display F16F 15/08 G10K 11/16 J G10K 11/16

Claims (1)

(57) [Scope of request for utility model registration] 1. A plate-like body is buried in a direction parallel to an axis of a rebound stopper rubber provided in a gap of a bush rubber of a cab mount insulator, and the plate-like body is projected from the rebound stopper rubber. A structure of a cab mount insulator, wherein a protrusion is bent in a radial direction, and a tip of the bent portion is caulked to a radial flange of an outer cylinder of the cab mount insulator.