JP2570986Y2 - Swing stopper device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle in which a front frame and a rear frame are relatively rotated about a turning axis, and more particularly to a turning stopper of a turning vehicle due to bending of the vehicle body. It concerns the device.

[0002]

2. Description of the Related Art FIG. 3 is a plan view mainly illustrating a turning stopper device as a conventional example of the above-mentioned vehicle. In the figure, a front frame a and a rear frame b are turned around a turning center axis c by a hydraulic cylinder (not shown), and stopper pins d provided on the front frame a.
1 and d2 come into contact with stopper plates e1 and e2 provided on the rear frame b to act as a turning stopper during turning. f1 and f2 are front wheel tires, and g1 and g2 are rear wheel tires. In this prior art, the stopper pins d1, d2 and the stopper plates e1, e2 are all made of metal, and the shock and noise when they come into contact with each other as the stoppers are large, and the riding comfort is poor. is there.

FIG. 4 shows another conventional turning stopper device, in which stopper rubber devices h1, h provided on a front frame a.
2 is a stopper plate i1, i provided on the rear frame b.
2 to act as a stopper during turning. FIG. 5 shows a JJ section in FIG.
In FIG. 5, a round stopper rubber k1 is fastened to a corner m1 of the front frame a by a bolt l1, and the cylindrical stopper n1 welded to the corner m1 prevents deformation of the round stopper rubber k1. Therefore, there is a problem that the structure is complicated and the cost is high.

[0004]

The prior art turning stopper device shown in FIG. 3 has a large shock and noise when abutting as a stopper, and has a poor ride comfort. Further, the turning stopper device shown in FIGS. 4 and 5 which is also a conventional technology has a serious problem that the structure is complicated and the cost is increased.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has a structure in which one frame rotates relative to the other frame about a pivot axis. In a vehicle in which the turning stopper device provided on the other frame comes into contact with a stopper provided on the other frame to act as a turning stopper, the concave portion of the cushioning material receiver provided on one frame is directed toward the bottom from the opening side. It has a cross-sectional shape that widens as it goes, and a buffer material having an outer peripheral surface fitted in the concave portion is fitted, a bolt is screwed on a screw to provide the buffer material receiver, and the tip of the bolt is used as a buffer material. A turning stopper device, wherein the stopper device is formed by inserting the stopper into a hole provided to fix the cushioning material.

[0006]

According to the above construction, in the front-rear direction, the cross-sectional shape of the concave portion of the cushioning material receiver is formed so as to expand from the opening side toward the bottom, and a cushioning material having an outer periphery fitted with the cross-sectional shape of the concave portion is inserted. By doing so, it does not come off in the front-rear direction, and is fixed by inserting the tip of the bolt into the hole of the cushioning material in the vertical direction. In addition, when the cushioning material receives external force, the deformation of the cushioning material is received by the concave part, so deformation is limited, and when the cushioning material wears, the cushioning material acts as a stopper to suppress further turning. is there.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows a turning stopper device 30 of the present invention.
FIG. 3 is a plan view showing a relationship between 40 and a vehicle body, and since the devices 30 and 40 have the same configuration, the following mainly describes 30. FIG. 2 is an exploded view of the members for explaining each member of the turning stopper device 30.

In the figure, a cushioning material receiver 31 having an inverted V-shaped concave portion 32 is fixed to the rear frame 1 by welding or the like.
A cushioning material 33 made of a material such as a strong rubber and having an inverted V-shaped outer periphery 34 is fitted into the concave portion 32 and the bolt 3
5 is screwed onto a screw 36 to provide the cushioning material receiver 31, and the tip end portion 37 of the bolt 35 is inserted into a hole 38 provided in the cushioning material 33 to fix the cushioning material 33. That is, a fixing hole 38 is provided in the cushioning member 33, and a female screw 36 is provided in the cushioning member receiver 31 having the inverted V-shaped concave portion 32, without fixing the bolt to the cushioning member or molding and fixing to the bracket. 35
The rotation stopper device 30 is formed by fixing the cushioning material to the cushioning material receiver 31 by screwing the female thread into the female screw 36 and inserting the tip of the bolt into the hole of the cushioning material.

Further, stopper plates 5 and 6 are provided on the front frame 2, and when the vehicle body turns around the turning center shaft 7, the stopper plates 5 or 6 come into contact with the turning stopper device 30 or 40 to turn. It serves as a stopper.

Next, the operation of the buffer stopper device will be described. When the stopper plate 5 comes into contact with the cushioning material 33, the deflection of the cushioning material 33 is received by the inverted V-shaped recess 32, so that the deformation is limited. And further turning is suppressed, and the cushioning material receiver 31 can be easily modified by fusing or the like.

[0011]

As described above, the turning stopper device according to the present invention has a reversely extending shape in the front-rear direction such that the cross-sectional shape of the concave portion of the cushioning material expands from the opening side toward the bottom surface. By inserting a cushioning material having an outer periphery that fits into the cross-sectional shape of the cushioning material, the cushioning material is fixed in the front-rear direction by preventing the cushioning material from coming out in the front-rear direction, and the tip of the bolt is inserted into the hole of the cushioning material in the up-down direction Therefore, it can be easily fixed only by regulating the vertical direction with bolts. The cushioning material made of strong rubber or the like absorbs shocks and noises, greatly improving ride comfort. In addition, since the inverted V-shaped recess receives external force, deformation is easily suppressed, and the structure is simple. This has a great effect of significantly reducing costs. Furthermore, according to the present invention, the replacement of the cushioning material only requires removing the bolt, and there is no need to fix the bolt to the cushioning material or to fix the bracket by molding, and only the holes need to be provided, so that the production can be performed. Easy.

[Brief description of the drawings]

FIG. 1 is a plan view showing a relationship between a turning stopper device and a vehicle body.

FIG. 2 is a member development view for explaining each member of the turning stopper device.

FIG. 3 is a plan view showing a relationship between a conventional turning stopper device and a vehicle body.

FIG. 4 is a plan view showing a relationship between another conventional turning stopper device and a vehicle body.

FIG. 5 is a sectional view taken along the line JJ in FIG. 4;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Backward frame 2 Forward frame 30 Rotation stopper device 31 Buffer material receiver 32 Concave portion of buffer material receiver 33 Buffer material 34 Outer periphery of buffer material 35 Bolt 36 Female thread 37 Bolt tip 38 Hole 40 Rotation stopper device

Continuing on the front page (72) Inventor Hideyuki Shimada 1-9-9 Minamidai, Kawagoe-shi, Saitama Komatsu Mek Co., Ltd. Headquarters Factory (56) References Fully Opened Sho 63-176780 (JP, U) Really Opened Sho 49-25988 (JP, U) Jingu Heihei 28-28194 (JP, Y2)

Claims (1)

(57) [Scope of request for utility model registration] 1. One of the frames is pivoted around a pivot axis.
To rotate relative to the other frame.
The rotation stopper device provided on one frame
Contact the stopper provided on the frame to
In the vehicle adapted to be used, the concave portion of the cushioning material receiver provided on one frame is directed toward the bottom surface from the opening side
It has a cross-sectional shape that expands as
By fitting a cushioning material having an outer peripheral surface to be fitted, screwing a bolt to a screw to provide the cushioning material receiver, and inserting the tip of the bolt into a hole provided in the cushioning material to fix the cushioning material, A turning stopper device characterized by forming a stopper device.