JPS60172745A - Vibrationproof device - Google Patents

Abstract

PURPOSE:To prevent an usable low-costed solenoid pump etc. by preventing any vibration from being transmitted to a base such as a vessel, etc., without stopping vibration generated in a device itself such as the solenoid pump, etc. CONSTITUTION:A movable bench 2 placed on a base 1, being a part of a vessel comprises plural spherical bodies 3 and a holding tool 4 for rotatably holding said spherical bodies 3. A solenoid pump 5 being a vibration souce is placed on said movable bench 2. A plate 8 surrounding the movable bench 2 is fitted to a fixed frame 10. The plate 8 is formed by an elastic material, and the spherical bodies 3 of bench 2 are movable and the plate 8 has a through hole 9 therein having a prescribed backlash in which the movable bench 2 can be slightly moved in an aribitrary direction.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a vibration prevention device for preventing vibrations from equipment placed on a base from being transmitted to the base.

[Prior art]

This will be explained using a pump as an example of a device that generates vibrations.

Conventionally, rotary pumps have been mainly used for hot water washers and low water supply devices, but since rotary pumps are expensive, the price of products for hot water washers and water supply devices has increased. Ta. Therefore, in order to reduce the product price, it was considered to use a low-cost electromagnetic pump, but since the electromagnetic pump generates large vibrations during operation, if it is directly attached to a base such as a container, the parts 1, etc. that make up the device will be damaged due to vibration. In addition, the screws, piping, and wiring connections that tighten these parts may become loose, causing these connections to become disconnected, resulting in malfunctions.

[Summary of the invention]

This invention was made to eliminate the above-mentioned drawbacks, and is composed of a movable table formed by rotatably holding a plurality of spheres, and an elastic plate having a through hole for accommodating the movable table. To provide a vibration prevention device that prevents vibrations from being transmitted to a base such as a container without stopping vibrations generated from the equipment itself, such as an electromagnetic pump. The present invention will be explained below with reference to the drawings.

[Embodiments of the invention]

1 and 2 are a plan view and a partially cutaway side view showing one embodiment of the present invention, in which 1j is a base body showing a part of a container such as a hot water washer, and 2 is a base body mounted on the base body 1; A movable table is placed in which a plurality of spheres (usually steel balls are used) 3 used inside the thrust bearing and this sphere 3 are shown.
The holder 4 rotatably holds the holder 4. Reference numeral 5 denotes an electromagnetic pump serving as a vibration source, which is placed freely on the sphere 3 of the movable base 2 without being fixed. 6
, 7 is a suction pipe and a discharge pipe of the electromagnetic pump 5, and 8 is a plate made of an elastic material such as rubber or synthetic resin. A through hole 9 is formed which has a size that allows for slight movement in any direction, that is, a required play gap. 10 is a frame fixed to the base 1 to fit the plate 8 and prevent it from moving; 11 is a belt that moves due to the vibration of the electromagnetic pump 5 and prevents it from coming off the top of the sphere 3; The belt 11 is made of an elastic material such as rubber, and both ends of the belt 11 are fixed to the frame 10.

Next, the operation will be explained.

The electromagnetic pump 5 placed on each sphere 3 of the movable base 2 is activated by electricity, and when vibration occurs, the sphere 3 rotates and the entire movable base 2 vibrates and moves in any direction. The vibration of the pump 5 is converted into the rotation of each sphere 3, so it is not transmitted to the base 1, and the movable table 2 moves and the outer periphery of the holder 4 comes into contact with the inner periphery of the through hole 9 of the plate 8. Even if the vibration of the electromagnetic pump 5 is absorbed by the plate 8, which is an elastic body, it is attenuated and is not transmitted to the base 1. The frame body 10 prevents the plate body 8 from moving due to contact with the movable base 2.

Furthermore, the belt 11 is moved to the movable base 2 due to vibration of the electromagnetic pump 5.
I'm holding it back from coming off.

Note that a belt 11 is tightened to prevent the electromagnetic pump 5 from coming off the movable base 2 due to vibrations of the electromagnetic pump 5.
Instead, an elastic contact piece may be provided at a predetermined distance from the periphery of the electromagnetic pump 5 in order to restrict the movement of the electromagnetic pump 5.

Furthermore, by stacking two movable bases 2 between the base 1 and the electromagnetic pump 5 via a hard plate, the large vibrations generated by the electromagnetic pump 5 are converted into rotational motion by the upper movable base 2. Furthermore, since the minute vibrations of the upper movable table 2 of the sphere 3 of the lower movable table 2 can be converted into rotational motion, no minute vibrations are transmitted to the base body 1. Further, two or more sheets may be stacked.

Furthermore, it goes without saying that the present invention can be applied not only to the electromagnetic pump 5 but also to a wide range of devices that generate vibration.

〔Effect of the invention〕

As explained above, the present invention includes a movable base formed of a plurality of spheres and a holder that rotatably holds these spheres, and a through hole that is elastic and accommodates the movable base and has a play gap. Since the vibration prevention device is constituted by an elastic plate having a large diameter and an elastic plate thinner than the diameter of the sphere, vibrations from the equipment are converted into rotation of the sphere, so the vibrations are not transmitted to the base body. Further, even if the movable member moves and comes into contact with the plate, vibrations are absorbed by the elasticity of the plate. Therefore, for example, whereas conventionally only an expensive rotary pump could be used, a low-cost electromagnetic pump can be used, which has the advantage of reducing the product cost of the container.

[Brief explanation of drawings]

FIGS. 1 and 2 are a plan view and a partially cutaway side view showing an embodiment of the present invention. In the figure, 1 is a base, 2 is a movable table, 3 is a sphere, 4 is a holder,
5 is an electromagnetic pump, 6 is a suction pipe, 7 is a discharge pipe, 8 is a plate body,
9 is a through hole, 10 is a frame, and 11 is a belt.

Claims (1)

[Claims] A movable base formed by a plurality of spheres and a holder that rotatably holds these spheres, and a through hole that accommodates the movable base and has a required play gap, and has a diameter larger than the diameter of the spheres. A vibration prevention device comprising a thin elastic plate and interposed between a base and a device that generates vibration.