JPH04136541A - Vibration isolating supporting device - Google Patents

Abstract

PURPOSE:To damp vibration to contribute to vibration isolation of apparatuses such as a body of rotation, etc., by forming a hollow part in the inside of an elastic body provided with a supporting face and a loading face, and packing the hollow part with sand. CONSTITUTION:A vibration isolating-supporting device 1 consists of a bowl-like body 2 made up of NBR rubber, and a cover body 3 provided with a button- shaped projection 31, and the cover body 2 is integrally bonded to the bowl-like body 2 so that it covers the upper part of the bowl-like body. Besides, it is desired that particle-size of the sand 5 to be packed is uniform, and the sand is wear resistant to the extent that it cannot be easily pulverized by mutual collisionand contact of particles, and the sand is tightly packed. Even when the device is used as the leg of a washing machine, the button-shaped projection 31 is fitted into the hole 6 of a bottom plate A'. Even when the washing machine is vibrated and its vibration is transmitted to the bottom plate A', the vibration transmitted to, the floor B on which the device is locted, is minimized, since the vibration isolating-supporting device 1 on the floor B consumes vibrating energy as frictional energy between particles in its inside. Thus, the vibration of the floor is minimized, and thus the generation of noise is reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION (Objective of the Invention) <Industrial Application Field> The present invention relates to a vibration isolating support device for damping vibrations during rotation of a washing tub or a dehydrating tub in a washing machine, for example.

<Background of the Invention> Conventionally, vibrations generated by rotating bodies and the like have been damped by combining rubber, springs, and the like.

On the other hand, when running on a sandy beach, my legs feel extremely heavy and I feel like I am losing a lot of energy. Also, when conducting vibration tests, a vibrator is sometimes set on the sand.

It is thought that these phenomena occur because vibration energy is consumed by mutual H friction between sand particles.

<Technical matters attempted to be developed> The present invention was made in view of the above background, and
This is an attempt to utilize energy consumption due to mutual friction between sand particles in a vibration-proof support device for rotating or other vibrating bodies.

(Structure of the Invention) Means for Achieving the Object> The vibration isolating support device, which is the first invention related to the present application, has a hollow portion formed inside an elastic body having a bearing surface and a mounting surface. It is characterized by being filled with sand.

In addition, the second invention of the present application, the anti-vibration support device, includes:
In addition to the above-mentioned requirements, the present invention is characterized in that silicone oil or low-hardness silicone gel is added to the hollow part together with sand.

These inventions attempt to achieve the above object.

<Operation of the Invention> In the present invention, the vibration energy of a rotating or other vibrating body is consumed by mutual friction between sand particles, and the vibration is attenuated.

In addition, by adding silicone oil or low-hardness silicone gel to the sand, the mutual friction coefficient between sand particles is adjusted, and the exchange of sand within the hollow part is achieved.
Performance stabilizes on average.

<Examples> The present invention will be specifically described below based on illustrated examples.

Reference numeral 1 designates a vibration isolating support device according to the present invention, and in the illustrated embodiment, this is shown as being used as a leg of a washing machine A. Note that A' indicates the bottom plate of the washing machine.

This device consists of a bowl-shaped body 2 made of NBR rubber as an elastic body and a lid body 3 on which a button-shaped protrusion 31 is formed, and the bowl-shaped body 2 is bonded and integrated so that the lid body 3 covers the upper part using things.

In addition, an annular projection 23 is formed at the top of the bottom of the bowl-shaped body 2,
Together they constitute a mounting surface. Further, a collar-shaped peripheral edge 21 is formed on the upper side thereof, and a ring-shaped metal piece 22 is fixed thereto. Note that this ring-shaped metal piece 22 is a bowl-shaped body 2.
It is desirable to insert the material into rubber molding and vulcanize it at the same time.

On the other hand, the lid body 3 is insert-molded so as to completely enclose the disc-shaped metal plate 32, and has a button-shaped protrusion 31 protrudingly formed on its upper surface.

The upper surface of the lid body 3 functions as a supporting surface, and the bowl-shaped body 2
A hollow part 4 formed by a lid body 3 is densely filled with sand 5.

Note that the bowl-shaped body 2 and the lid body 3 may be bonded together using a normal adhesive or other appropriate fixing means.

Further, the sand 5 to be filled here is not particularly limited, but it is desired that the sand 5 has a constant particle size and is hard enough not to be easily crushed by mutual collision. Further, it is preferable that the filling condition is such that the filling is densely packed by appropriately compacting or by applying vibration.

Furthermore, an appropriate amount of silicone oil or silicone gel may be added thereto. In particular, when adding silicone gel, it is preferable to add a low-hardness addition-reaction type silicone gel stock solution that hardens to a penetration of 100 or more, and crosslink it by heating in sand δ.

When used as the legs of the washing machine A as in the embodiment, the button-shaped protrusions 31 of the anti-vibration support device 1 are fitted into the holes 6 made in the bottom plate A' of the washing machine A.

Then, the washing tub and spin-drying tub rotate and washing machine A vibrates.
Even if the vibration is transferred to the bottom plate A, the vibration isolating support device 1 installed between the washing machine A and the floor B where the washing machine A is installed internally absorbs this vibration energy. Since the energy is consumed as friction between the particles of the sand 5, the vibrations propagating to the floor surface 8 are minimized, and the occurrence of vibrations on the floor surface and generation of noise is reduced.

Although the above embodiments apply the present invention to the legs of a washing machine, other appliances that generate vibrations include refrigerators, home appliances such as video disc players, other industrial equipment, and machine tools. It can also be applied to equipment or as a vibration-proof connection member between members.

(Effect of the invention Σ As described above, in the present invention, kinetic energy is consumed as thermal energy by mutual friction of internal sand particles, vibration damping is achieved, and it greatly contributes to vibration isolation of equipment such as rotating bodies. can.

[Brief explanation of the drawing]

FIG. 1 is a perspective view from the bottom showing a state in which the vibration isolating support device of the present invention is used as a leg of a washing machine, and FIG. 2 is a sectional view of the same. A...Washing machine B...Floor surface]...Vibration isolation support device 2...Bowl-shaped body 21...Brim-shaped periphery 22...Ring-shaped metal piece 23...Annular protrusion 3... - Lid body 31...Button-shaped projection 32...Disc-shaped metal plate 4
...Hollow part 5...Sand

Claims (2)

[Claims] (1) A vibration-proof support device characterized in that a hollow part is formed inside an elastic body having a bearing surface and a mounting surface, and the hollow part is filled with sand. (2) The vibration isolating support device according to claim 1, wherein in addition to sand, silicone oil or low hardness silicone gel is added to the hollow portion.