JPS5851605Y2 - Suspension system stopper rubber device - Google Patents

Description

[Detailed description of the invention] This invention relates to a stopper rubber device for an axle suspension system that is mainly used in the body structure of an automobile. The military is known, in the beginning,
The structure of a conventional stopper rubber device for an axle suspension system using coil springs will be explained with reference to FIG.

A spring port bracket 6 is fixedly installed on the bottom surface of the floor panel 3 above the portion of the rear axle 1 near the wheel 2, between the rear frame 4 and the rear wheel house inner 5. It is formed by a flange portion 6a welded to the panel 3 and a shaft cylindrical portion 6b extending downward.

Thus, a cot-shaped reinforcement 7 is welded to the inner surface of the shaft cylindrical portion 6b, and a flange-shaped axle stopper bracket 8 is attached to the end surface of the shaft cylindrical portion 6b.
is welded downward, and the upper half of the axle stopper rubber 9 is fitted into the inner hole of the stopper bracket 8.

Note that a riveted protrusion 9a is formed on the upper end of the stopper rubber 9, which has a dish shape, and this protrusion 9a is attached to the shaft cylinder portion 6b.
By being press-fitted into the center hole of the end surface, the stopper rubber 9
is not removed.

On the other hand, a dish-shaped catch 10 is fixed on the outer peripheral surface of the axle 1 facing the stopper rubber 9, and an annular groove 10a is formed on the upper surface of the catch 10.
The flat surface surrounded by 1 is the contact surface 1 facing the stopper rubber 9.
It forms 0b.

Further, the annular groove 10a and the support bracket 7 flange portion 6
C. A suspension coil spring 12 is interposed between the elastic spring seat 11 fitted in A.

By the way, in the conventional stopper rubber device formed by the stopper bracket 8 and the stopper rubber 9, when the vehicle body sinks, the stopper rubber 9 hits the contact surface 10b, thereby achieving the effect of preventing a collision between the vehicle body members. However, since the joint A between the support bracket 6 and the stopper bracket 8 must be arc welded when manufacturing the car body, it not only takes a lot of man-hours to assemble the device, but also reduces productivity. , since the buffer load is applied directly to the welded part A, the strength is still insufficient even if reinforced with reinforcement 7, and it is difficult to ensure the accuracy of the mounting position of the stopper bracket 8 due to welding, so the stopper There were problems such as difficulty in tightly holding the rubber 9 on the bracket 8.

The present invention was devised to solve the above-mentioned problems, and the purpose of the present invention is to enable assembly by spot welding, and to achieve sufficient load-bearing strength without adding any reinforcing members. It is an object of the present invention to provide a stopper rubber device of a suspension type, which is capable of holding the stopper rubber reliably.

Hereinafter, the present invention will be explained based on an illustrated embodiment.

In the stopper rubber device of the embodiment, as shown in FIG.
Flange portion 16a of spring support bracket 16
The axle stopper bracket 18 is extended to the rear frame 4 side and is welded to both the floor panel 13 and the rear frame 4. The upper end 18a is fitted onto the shaft cylinder portion 16b of No. 16 and has an enlarged diameter.
are butted against the flange portion 16a.

The stopper bracket 18 is spot-welded to the outer circumferential surface of the shaft cylinder portion 16b, and a conventional stopper rubber 9 is fitted and held in the inner hole thereof.

The stopper rubber device configured in this manner performs a buffering effect in the same way as conventional devices, but the load applied to the stopper bracket 18 during the buffering operation is directly transmitted through the bracket upper end 18a without passing through the spot welding part. It is supported by the rear frame 4, so that there is no risk of the device being deformed or damaged even without providing a reinforcing member.

Furthermore, the protrusion dimension a of the lower end of the stopper bracket 18 is such that the upper end of the bracket 18 is butted against each other.
High accuracy is maintained without being affected by the welding process, and therefore, the stopper rubber 9 is prevented from wobbling due to the taper of the bottom of the bracket 18, and the stopper rubber 9 is tightly held on the bracket 18.

Since the inner circumferential surface of the spring seat 21 is in contact with the outer circumferential surface of the bracket upper end 18a, there is no risk that the inner circumferential portion of the spring seat 21 will be damaged by the end surface of the bracket 18.

As described above, according to the stopper rubber device for a suspension system according to the present invention, the axle stopper bracket is fitted onto the shaft cylinder portion of the spring support bracket, and the upper end thereof is butted against the flange portion of the support bracket. Since the fitting part between both brackets is welded together by spot welding, the assembly process of the device is made more efficient, the number of parts is reduced, and the bearing strength of the device is increased. This has the effect of improving the durability, reliability, and productivity of the device, such as ensuring the retention of each member.

[Brief explanation of drawings]

FIG. 1 is a cross-sectional view of a conventional stopper rubber device, and FIG. 2 is a cross-sectional view of a suspension-type stopper rubber device showing an embodiment of the present invention. 1... Axle, 9... Axle stopper rubber, 1
2...Coil spring, 13...Floor panel,
16...Spring support bracket, 16a...
- Flange portion, 16b...Axle cylinder portion, 18...Axle stopper bracket, 18a...Upper end.

Claims (1)

[Scope of utility model registration request] An axle stopper rubber attached to an axle suspension system comprising a spring support bracket fixed to the bottom of the floor panel above the axle, and a suspension coil spring interposed between the support bracket and the axle. The device is formed by an axle stopper bracket that is coaxially attached to the support bracket, and an axle stopper rubber that is fitted into an inner hole of the stopper bracket and whose lower half protrudes toward the axle. The axle stopper bracket is fitted onto the shaft cylinder part of the support bracket with its upper end abutted against the flange part of the support bracket, and the outer fitting part is fitted onto the stopper rubber device. A suspension stopper rubber device characterized by spot welding.