JPS61149633A - Vibration absorbing structure - Google Patents

Abstract

PURPOSE:To absorb a vibrative wave from the outside in a good manner further in an early stage, by dividing an air chamber to be formed by a gel-state material layer between plate members and utilizing non-elastic absorbing action of the gel-state material layer while elastic absorbing action of the air chamber. CONSTITUTION:A gel-state material layer 3 of 50-200 penetration is formed between an upper side plate member 1 and a bottom side plate member 2, and this gel-state material layer 3 forms many air chambers 4. In this way, an external frequency applied to a local part of the plate member can be absorbed by the integrated action of the gel-state material layer 3, that is, by damping action due to dispersion and differentiation of a vibrative wave in the gel-state material layer 3 while resisting force against the vibrative wave generated in the gel-state material layer 3 due to air cushion action in the air chamber 4.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a vibration absorber used in vibration isolation panels and the like.

<Prior Art> This type of conventional vibration absorber uses an elastic material as a vibration absorbing material, and for example, a rubber mat or a foamed polyurethane resin sheet is used as a vibration-proof mat.

<Problems to be Solved by the Invention> Such conventional vibration absorbers absorb vibrations by local deformation of the elastic material that occurs in the parts where vibrations are applied, so if the vibrations are large, the absorption effect is lost. In addition to the problem of swelling, since vibration absorption is performed by elastic deformation of the elastic material, there is a problem that vibration absorption is hindered by the rebound resilience of the elastic material.

Means for Solving the Problems〉 The vibration absorber of the present invention has a penetration degree of 50 to 50 between the upper and lower plates.
200 gel-like material layers are interposed therein, and the gel-like material layer is provided with a plurality of air chambers opening in the thickness direction of the layer, and these air chambers are sealed by the plate material to provide an air cushion effect. At the same time, it is characterized in that it is constructed so that vibration waves are dispersed by inelastic deformation of the gel-like material layer.

Function> The vibration absorber of the present invention has an inelastic absorption action in which vibration waves applied to the plate material are absorbed by inelastic deformation of the gel-like material layer, and an elastic absorption action in which the vibration waves are absorbed by the deformation of the air chamber. It has a synergistic effect with.

The above-mentioned inelastic absorbing action is obtained by liquid-like propagation characteristics in a gel-like material having a penetration degree of about 50 to 200.

That is, when a vibration wave is applied to a part of the gel-like material layer,
This vibration energy deforms inelastically, and this deformation has the property of damping the vibration energy.
~ 200, especially a gel material with a penetration of 100 to 200, quickly disperses the vibration waves to the surrounding area and propagates them while being differentiated. Therefore, the vibration waves applied to a part of the gel material layer are diffused into the interior and absorbed.

Furthermore, the above-mentioned elastic absorption action of the air chamber is obtained when the volume of the air chamber is reduced by deformation of the plate material or the gel-like material layer.

Therefore, from a practical point of view, the inelastic deformation of the gel-like material layer includes the air cushion effect of the air chamber as an elastic resistance force, that is, a vibration damping component, and this elastic resistance force causes the basic inelastic deformation. It is endowed with resistance.

Embodiment Example FIG. 1 is a partially cutaway plan view of the vibration absorber of the present invention, in which a gel-like material layer 3 is formed between an upper plate l and a lower plate 2. This shows a state in which a large number of air chambers 4 are formed.

The two plates 1.2 may be made of a hard material or a soft material, but usually the lower plate 2 is made of a hard material and the upper plate 1 is made of a soft material.

As the plate material, it is desirable to select a material that has good adhesion to silicone gel, such as polycarbonate resin, acrylic resin, glass, polypropylene resin, polyethylene resin, or vinyl chloride resin.

That is, in this case, a silicone resin liquid, which is a raw material for silicone gel, is applied to the plate material, for example, Toray Silicone CY 52 (trade name).
-264Gel (manufactured by To-Ly Silicone Co., Ltd.)
By using silk printing means.

A wheel is produced that produces the desired gel-like material layer 3.

The air chamber 4 has a gel material layer 3 as shown in FIG.
By creating a lattice, the gel material layer 3 may be formed with recesses located at equal intervals, or as shown in FIG. It is also possible to form concave holes with different numbers.

The air chamber 4 is made by sealing a transparent hole as shown in Fig. 2 or a blind hole as shown in Fig. 4 with a gel-like material layer as a hole wall, and sealingly closes the same with a plate material, thereby reducing the volume of the chamber. It is constructed so that a repulsion force is generated as a result.

The outer periphery of the gel-like material layer 3 is sealed with a peripheral wall 5 usually made of an elastic material, a plastic material, or a hard material, and this peripheral wall 5 prevents the gel-like material layer 3 from swelling.

Although one vibration absorber of the present invention may be used, in some cases, a plurality of vibration absorbers A may be used as shown in FIG.

A may be stacked to form a laminated vibration absorber, and an article 6 that does not like vibrations, such as a computer device, may be placed on top of this.

This type of laminated vibration absorber has two layers, one above the other, as shown in Figure 6.
A plurality of gel-like substances fi3゜3... between the pair of plate materials 1.2
In this case, a diaphragm 7 with good vibration transmission property is provided between each gel-like material layer 3.3, for example, a plate-shaped plate made of an elastic material as shown in the figure, or A thin hard plate or the like may be used.

In such a laminated type vibration absorber, as shown in FIG. 6, the position of the air chamber 4 may be changed for each gel layer 3. The characteristics of the vibration absorber can be set as desired.

<Effects of the Invention> As described above, the vibration absorber of the present invention has a gel-like material layer 3 that absorbs vibration waves through inelastic deformation, and an elastic material layer 3 that inhibits the deformation due to volume reduction. Since it coexists with the air chamber 4 that exerts a repulsive force, the gel-like material layer 3 is attenuated by the dispersion and differentiation of vibration waves within the gel-like material layer 3, and the air cushion action of the air chamber 4. Due to the resistance force against the vibration waves generated in the gel material layer 3, external vibration waves applied locally to the plate material can be absorbed by the overall operation of the gel-like material layer 3.

Therefore, the vibration absorber of the present invention can absorb vibration waves from the outside well and quickly.

[Brief explanation of drawings]

Fig. 1 is a partially cutaway plan view of the vibration absorber of the present invention, Fig. 2 is a sectional view taken along the line x-X in Fig. 1, and Fig. 3 is a schematic diagram showing another embodiment of the vibration absorber of the present invention. FIG. 4 is a sectional view taken along line Y-Y in FIG. 3, FIG. 5 is a side view showing an example of the use of the vibration absorber of the present invention, and FIG. FIG. 7 is a longitudinal side view showing still another embodiment. In the figure, 1.2 indicates a plate material, 3 indicates a gel-like substance layer, and 4 indicates an air chamber. Figure 1 Figure 2 Figure 6 Spontaneous Procedural Amendment May 10, 1985 Patent Application No. 272.535 2, Title of Invention Vibration Absorber 3 Person making the amendment, and Relationship: Applicant / Miz / Myakami Address 789-5 Miyakazo, Shimizu City, Shizuoka Prefecture Date of amendment order 6 Number of inventions increased by amendment 7 Target of amendment in the specification of the application @ 3 Shinyu 5 Insert the following explanation after the line. Note: The penetration shown here is JIS K 253G-
1976- (50g load). This standard relates to the masonry asphalt penetration test method, and for samples with a penetration of 350 or less, the test is carried out with a load of 100 g, but in the case of gel-like substances, the test is carried out with a load of 50 g. has been done.

Claims (4)

[Claims] (1) At least one layer of gel-like material with a penetration depth of about 50 to 200 is interposed between the upper and lower two plates, and an appropriate number of recesses are provided in this gel-like material layer, and the recesses are A vibration absorber characterized by creating an air chamber by sealing it with a board. (2) The vibration absorber according to claim 1, wherein the air chamber is formed by sealing a concave hole cut through the gel material layer with the two plates. (3) Vibration absorption according to claim 1, wherein the air chamber is formed by sealing a blind hole recessed in the gel material layer with one of the two plates. body. (4) A claim characterized in that a plurality of the above-mentioned gel-like material layers are formed between two upper and lower plates, and a partition plate with good vibration transmission properties is interposed between the gel-like material layers. The vibration absorber according to item 1.