JPS63120928A - Shock absorber - Google Patents

Abstract

PURPOSE:To enable application of single shock absorber at positions different load or vibration, by feeding gas in/out from a gas sealing means and regulating the inner pressure, and making the modulus of elasticity variable. CONSTITUTION:An annular, hollow thick rubber 5 is provided between upper and lower members 1, 2 and a gas sealing space 6 is provided between them. A fluid port 7 associated with a plug is providing while penetrating through the thick rubber 5 in the gas sealing space 6 so as to enable feed in/out of air. Such a shock absorber supports the load functioning from the upper member 1 onto the lower member 2 and absorbs the vibration of the members. When air is fed in/out from the gas sealing 6 and the inner pressure is varied, the modulus of elasticity can be regulated according to the magnitude of load and the strength of vibration, thereby the shock absorber can be applied at positions of different load or vibration.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) This invention provides an elastic means interposed between members,
The present invention relates to a shock absorber that prevents vibrations occurring in one member from being transmitted to the other member.

(Prior Art) In mechanical devices, a shock absorber is provided to prevent vibrations occurring in the force from being transmitted to the other side.

For example, when supporting an automobile engine, the engine is supported in the engine compartment by a mount made of rubber.

An example of a conventional shock absorbing device will be described with reference to FIG. 3. A known shock absorbing device includes a floating ring-shaped rubber 4 having a hollow portion 3 between an upper member 1 and a lower member 2.

Here, the hollow portion 3 is provided to increase the amount of elastic deformation, and this hollow portion 3 communicates with the outside air. Therefore, the air within the hollow portion 3 is not compressed or expanded even if the rubber 4 is elastically deformed.

(Problem to be solved by the invention) However, in the conventional ixi device described above, the elastic modulus cannot be adjusted, so it is impossible to install one shock absorber in a cabinet with different loads, vibrations, etc. Moreover, even when installed at the same location, it is impossible to provide an optimal damping effect when the load and vibration vary from time to time.

An object of the present invention is to provide a shock absorbing device that has an adjustable elastic modulus and can be applied to locations with different loads and vibrations, and sometimes to cases with different loads and vibrations.

(Example) An example of the present invention will be described below with reference to FIGS. 1 and 2.

Referring to figures fjg and i, an annular and hollow thick rubber 5 is provided between the upper member 1 and the lower member 2, and a gas-filled space 6 is provided therein.

A fluid lower with a stopper is provided in the gas-filled space 6 through the thick rubber 5, so that air can be taken in and taken out.

This shock absorber supports the load acting on the lower member 2 from the upper member 1 and buffers vibrations of the member.

In this embodiment, by changing the internal pressure by taking air in and out of the gas-filled space 6, the elastic modulus can be adjusted according to the magnitude of the load and the strength of vibration, and an optimal cushioning effect can be provided.

Note that the present invention is not limited to the above-mentioned embodiments, and the elastic modulus of the elastic material as a whole can be varied by adjusting the pressure of the fluid contained in the hollow part of the hollow member made of rubber or other elastic material. This includes all of the above.

In another embodiment shown in FIG. 2, an upper member 1, a lower member 2
An air chamber 8 surrounded by thick rubber 5 is formed in a sealed state. The upper member 1 is provided with an IJ ice 9 that communicates the air chamber 8 with the outside air, and the lower member 2 is provided with an orifice 10 that communicates the air chamber 8 with the outside air. When the upper member 1 or the lower member 2 vibrates, the thick rubber 5 is elastically deformed, and the air chamber 8 is repeatedly compressed and expanded. This compression and expansion of the air chamber 8 causes the orifice 9 to open.
．． Air enters and exits via 10.

According to this, in addition to the buffering effect of the thick rubber 5, it is possible to obtain a vibration isolating device which has a combined vibration absorbing (damper) effect due to the inflow and outflow of air through the orifice 9, 10 accompanying vibration.

In the above embodiment, two orifices are provided, but the number of orifices may be one or more, and the installation position thereof is not limited.

(Effects of the Invention) As explained above, the present invention provides the following effects.

In this invention, the internal pressure is adjusted by putting gas in and out of the gas sealing means, and the elastic modulus is made variable. Therefore, one shock absorber can be applied to locations with different loads and vibrations, and sometimes even in cases with different loads and vibrations. Possible.

This increases the need for shock absorbers and reduces costs.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view of an embodiment of the present invention. Figure f52 is a longitudinal sectional view of another embodiment. Figure f53 is a longitudinal cross-sectional view of the prior art. 1: Upper member 2: Lower member 5: Thick rubber 6: Tube 7: Gas port agent Patent attorney Tsuji Mibe (1 idiot) Figure 1 Figure 2 Figure 3

Claims (1)

[Scope of Claims] A shock absorbing device in which elastic means is interposed between members to support a load and have a buffering function, wherein the elastic means has a gas-filled space, and the gas-filled space is filled with fluid. A shock absorber that is equipped with a gas port for putting in and taking out air, and whose elastic modulus can be varied by adjusting the internal pressure of the gas-filled space.