JPH0328194Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a shock absorbing rubber stopper that is interposed between members on which a load is applied to cushion the members.

The cushioning rubber stopper is interposed, for example, between the chassis frame and the body panel of the vehicle.
As an example, as seen in Japanese Utility Model Publication No. 48-43341, a tapered spindle-shaped cushioning rubber is caulked to the top side of a bracket with mounting screws protruding from the bottom surface, and a molded type is used instead of caulking. A fixed type is conventionally known. However, in any case, the conventional cushioning rubber stopper has a problem in that the cushioning rubber deforms freely in response to compressive loads.
The load-deflection curve changed as shown by the dashed line in FIG. 1, the amount of deflection increased, and the function as a stopper for blocking the member was not sufficient. Furthermore, even when the bracket is used, the mounting screws are simply provided protrudingly, and the workability of mounting the component on the component is poor.

This invention was made to solve the above-mentioned conventional inconveniences.
Another object of the present invention is to provide a shock absorbing rubber stopper that can improve workability during installation.

For this purpose, the present invention has a tapered spindle-shaped cushioning rubber molded and fixed to the upper surface of a bracket with mounting screws protruding from the lower surface, and the bracket has a polygonal shape in plan view and has a base end of the cushioning rubber. The gist of the present invention is to form a flange portion for restricting the expansion of buffer rubber that surrounds the periphery of the portion with a predetermined gap.

The present invention will be specifically described below based on an embodiment shown in the drawings.

As shown in FIG. 2, the shock absorbing rubber stopper 1 of the present invention includes a bracket 3 having a mounting screw 2 protruding from the lower surface and fixed thereon, and a shock absorbing rubber 4 disposed on the upper surface of the bracket 3.
It consists of. The bracket 3 has a collar portion 3a formed by bending its peripheral edge upward at a substantially right angle by press working, and has a dish-like shape as a whole.
The mounting screw 2 is arranged at the center thereof. Here, the flange portion 3a is 6 in plan view as shown in FIG.
It is formed into a rectangular shape, and a tapered spindle-shaped buffer rubber 4 made of elastic rubber is arranged so that its base end is surrounded by the collar 3a. The buffer rubber 4 is molded from the top surface of the bracket 3 to the inner circumferential surface and upper end surface of the collar portion 3a and is integrated into the bracket 3, and the buffer rubber 4 is provided on the outer periphery of the base end to absorb the compressive load. A predetermined gap is defined to permit radial expansion of the proximal end when received.

The cushioning rubber stopper 1 having the above configuration is interposed between the two members 5 and 6 on which a load acts, and is fixed by screwing the mounting screw 2 into the screw hole 5a of one of the members 5 (the fourth (see figure a). At this time, since the collar portion 3a of the bracket 3 is formed into a hexagonal shape in plan view, the mounting screw 2 can be screwed in reliably and easily by gripping that portion or using a wrench. Note that when the member 5 has a screw insertion hole 5b instead of the screw hole 5a, the nut 7 is screwed into the member 5 from the lower end of the mounting screw 2, but in that case also. The polygonal shape of the collar portion 3a allows the bracket 3 to be held securely, so that the nut 7 can be securely tightened (see FIG. 4b).

The buffer rubber stopper 1 fixed to the member 5 in this manner receives the load of the member 6 by bringing the tip of the buffer rubber 4 into contact with the member 6, and blocks this by the bending of the buffer rubber 4. The load-deflection curve in this case is shown as the solid line in FIG. 1, and the deformed state of the cushioning rubber 4 corresponding to the deflection areas indicated by A to C is shown in FIG. 5. That is, while there is a gap around the proximal end of the cushioning rubber 4, the cushioning rubber 4 is free to expand in the radial direction due to the compressive load, so the deflection against a constant load is relatively large, and a sufficient cushioning effect is achieved. Next, when the cushioning rubber 4 is bent to a certain extent and its base end expands in the radial direction and comes into contact with the inner periphery of the collar 3a, the expansion of the base end is regulated, so the amount of deflection for a constant load is It will decrease slightly. If further load is applied from this state,
The deflection of the cushioning rubber 4 is rapidly reduced, and it functions as a stopper for blocking the member 6.

In this embodiment, the flange portion 3a of the bracket 3 has a hexagonal shape in plan view, but it may have any polygonal shape such as a quadrangular shape or an octagonal shape.

Further, the cushioning rubber 4 may be molded only on the upper surface of the bracket 3.

As explained above, according to the present invention, the cushioning rubber can be elastically deformed freely within a predetermined range from the initial stage of compression deformation, and as a result, not only can the buffering effect between the members be sufficiently achieved, but also the cushioning rubber can be compressively deformed by a predetermined amount. When the shock absorber expands in the radial direction, the collar of the bracket restricts further expansion, so the amount of deflection of the cushioning rubber decreases rapidly, allowing it to function as a stopper, ensuring that the member is held securely. Can be stopped. Furthermore, since the brim of the bracket has a polygonal shape in plan view, this part can be used as a handle,
Alternatively, by using a spanner, the mounting screw can be screwed in reliably and easily, and the workability of mounting the buffer rubber stopper can be improved.

[Brief explanation of drawings]

Fig. 1 is a graph showing the load-deflection curve of a cushioning rubber stopper according to an embodiment of the present invention in comparison with a conventional example, Fig. 2 is a full sectional view of the cushioning rubber stopper according to an embodiment of the present invention, and Fig. 3 is a The same plan view and FIGS. 4a and 4b are explanatory views of the attached state, and FIG. 5 is an explanatory view showing changes in the state of compressive deformation of the elastic rubber. 1...Buffer rubber stopper, 2...Mounting screw, 3
...Bracket, 3a...Brim portion, 4...Buffer rubber, 5, 6...Member, 7...Nut.

Claims (1)

[Scope of utility model registration request] A tapered spindle-shaped cushioning rubber is molded and fixed to the upper surface of a bracket with mounting screws protruding from the lower surface, and the bracket has a polygonal shape in plan view.
A buffer rubber stopper characterized in that a collar portion for regulating expansion of the buffer rubber is formed to surround the proximal end of the buffer rubber with a predetermined gap.