JP2006283939A - Sheet for earthquake resistance and vibration control - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sheet for earthquake resistance and vibration control capable of achieving earthquake resistance and vibration control effects for a long time by using an elastic member having vibration control performance and adhesive together. <P>SOLUTION: This sheet for earthquake resistance and vibration control for protecting installed objects from swinging of earthquake and shock and vibration of various machine equipment and a vehicle by spreading this sheet on the bottom of the installed objects such as indoor and outdoor equipment, various machine equipment, measuring instruments, etc. is provided with the elastic members 20 having vibration control performance and adhesive layers 30, 40 laminated on at least either of the elastic members 20 having vibration control performance. The elastic member 20 having vibration control performance is formed by an elastic body being harder than the adhesive layers 30, 40. A recessed part 23 and a through hole 24 may be formed in the elastic member 20 to achieve earthquake resistance and vibration control. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an anti-vibration and vibration-proof sheet, and more particularly to an anti-vibration and vibration-proof sheet for preventing damage to equipment due to overturning or movement of equipment due to an earthquake shake by being laid under indoor equipment.

2. Description of the Related Art There are known anti-vibration and vibration-proof sheets used under indoor and outdoor equipment, mainly composed of an adhesive and an elastic body such as natural rubber.
The main component of the adhesive is to integrate the fixture and the mounting surface of the fixture by its adhesiveness and to achieve earthquake resistance by the attenuation effect of acceleration. It is compressed to about 1 mm, and the seismic effect is reduced by the secular change of 3 to 4 years. Therefore, the substantial effect can be exhibited only for relatively light fixtures such as vases and watches. In addition, there are some oils and resin softening plasticizers that evaporate due to secular change and become crispy and cannot exhibit the adhesive effect.
The main component of the elastic body such as natural rubber is effective against rolling, but the position of the fixture is shifted and the original effect is exhibited against pitching. I can't.
Further, in Patent Document 1, a material in which a specific adhesive body is coordinated on the top and bottom of a main body such as a hard engineering plastic has been proposed, but it is only aimed at the earthquake resistance effect by a specific adhesive. .

JP 2004-176761 A

  An object of the present invention is to provide an anti-vibration and vibration-proof sheet that can exhibit an anti-vibration and vibration-proof effect for a long period of time by using an elastic member having anti-vibration performance and an adhesive together.

Therefore, the invention according to claim 1 of the present application can be installed from the shaking of an earthquake or the impact and vibration of various mechanical devices and vehicles by laying on the bottom of the installed items such as indoor and outdoor equipment, various mechanical devices and instruments. In the anti-vibration vibration-proof sheet for protecting the elastic member, the elastic member having the vibration-proof performance and the adhesive member laminated on at least one of the elastic member having the vibration-proof performance, The above-mentioned problems are solved by providing an anti-vibration and vibration-proof sheet characterized by being formed of an elastic body harder than the pressure-sensitive adhesive layer.
The invention according to claim 2 of the present application is that at least one of the upper surface and the lower surface of the elastic member, in which a concave portion is formed on a surface on which the adhesive layer is formed, and the adhesive layer is a concave portion The anti-vibration and vibration-proof sheet according to claim 1, which is also filled inside.
In the invention according to claim 3 of the present application, an adhesive layer is formed on both the upper surface and the lower surface of the elastic member having vibration isolation performance, and a penetrating portion passing through the elastic member having vibration isolation performance is formed, The anti-vibration and vibration-proof sheet according to claim 1, wherein the adhesive layer is also filled in the penetrating portion so that the upper and lower adhesive layers are connected.
In the invention according to claim 4 of the present application, a concave portion is formed on at least one of the upper surface and the lower surface of the elastic member having vibration isolation performance, and a through portion is formed through the elastic member having vibration isolation performance. The anti-vibration and vibration-proof sheet according to claim 1, wherein the pressure-sensitive adhesive layer is also filled in the concave portion and the penetrating portion.
The following are mentioned as a combination of an elastic member and an adhesive. (1) An adhesive layer laminated on one side and both sides of a flat elastic member without a recess. (2) One side of an elastic member in which a concave portion is formed only on one side, and an adhesive layer laminated on both sides. (3) One side of an elastic member having recesses formed on both sides, and one in which an adhesive layer is laminated on both sides. (4) The elastic member having no recess described in (1) above is formed with a penetrating portion, and the adhesive member is laminated on one side and both sides. (5) In the elastic member described in (2) or (3) above, the through-hole penetrating vertically is formed in the elastic member having the concave portions formed on one side and both sides, and the elastic member is adhered to one side and both sides. A laminate of agent layers.
In the present invention, the sheet means a material having a form that can be laid under an installed product, and may be a block shape, a strip shape, or a piece shape. Various modifications such as a polygon such as a rectangle, an indefinite shape, and the like can be implemented. In addition, the size can be changed as appropriate. In the case of a rectangle, it may be a small one such as 2 cm × 2 cm, 2 cm × 3 cm, 3 cm × 3 cm, or a larger one extending several tens to hundreds of centimeters. In this case, the diameter may range from a small one having a diameter of 2 to 5 cm to a length of several tens to several hundreds cm.

The anti-vibration and vibration-proof sheet according to the present invention depends on its thickness, but even when it is laid under a heavy object of about 2 to 10 tons, in addition, the adhesive in the part exposed to the outside air Even when aging deteriorates due to secular change, the minimum seismic and vibration-proof performance can be maintained by the elastic member having the vibration-proof performance. In addition, by providing concave and penetrating parts, the shape of the concave part is distorted by the load, improving the anti-vibration performance against rolling, and using a pressure-sensitive adhesive with high cohesive strength and adhesive strength to support rolling and pitching. it can. The shape of the elastic body can be the one shown in the embodiment or other various shapes, and by pouring the adhesive portion into the elastic body of this shape, the sticking effect causes the vibration in the vertical axis direction. It also works effectively against it. In particular, when an elastic member having anti-vibration performance is provided with a recess and a penetrating part and filled with an adhesive, the adhesive is prevented from aging and the thickness of the adhesive layer is increased. Less likely to change over time. In addition, for the adhesive in the recess and the penetrating part, the load of indoor and outdoor equipment and various mechanical devices and instruments etc. is received by an elastic member having anti-vibration performance, so this functions as a core material, The pressure-sensitive adhesive layer can be prevented from being crushed. In addition, when the adhesive layer on the upper and lower surfaces of an elastic member with anti-vibration performance is connected by the adhesive of the penetrating member, high anti-vibration and anti-vibration performance of the entire sheet can be obtained and maintained for a long period of time. It can be done.
For example, for a heavy article having a weight of about 2 to 10 tons, this is appropriately formed as a laminated structure in which three layers of a 20 mm thick adhesive layer, a 35 mm thick elastic member, and a 20 mm thick adhesive layer are combined. An anti-vibration and vibration-proof performance can be obtained by laying a number (for example, 6 to 8 sheets of 40 mm × 135 mm rectangular sheets) under the installation. In addition, it is possible to lay two or three sheets with the thickness of each layer being stacked one above the other.
Furthermore, when the adhesive layer is arranged on both the upper surface and the lower surface of the elastic member, it can be installed even if the installation surface is an inclined surface, and vibration from the installation surface is not generated. Even if it is difficult to fix with other parts such as bolts, or in places where loosening occurs immediately after fixing, even if bolts are not used or used together with bolts A good vibration isolation effect can be obtained over a long period of time, and an extremely stable installation can be realized.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 (A) is a perspective view of a seismic / vibration-proof sheet according to an embodiment of the present invention, and FIG. 1 (B) is a sectional view thereof.

  The sheet 10 includes an elastic member 20 having vibration-proof performance (hereinafter simply referred to as an elastic member 20) and pressure-sensitive adhesive layers 30 and 40 laminated on both the upper surface 21 and the lower surface 22 of the elastic member 20. . The thickness of the elastic member 20 is suitably 1 to 35 mm in order to give necessary elasticity to the entire sheet. Further, the thickness of the pressure-sensitive adhesive layers 30 and 40 is suitably 1 to 20 mm for each of the upper surface side and the lower surface side. The elastic member 20 and the pressure-sensitive adhesive layer 30 need only be implemented with a uniform thickness, but can also be implemented with partial changes in thickness. You may implement only in any one among the adhesive layers 30 and 40. FIG.

  Examples of the elastic member 20 include isoprene rubber, natural rubber, styrene butadiene rubber, chloroprene rubber (neoprene), ethylene propylene diene terpolymer, fluorine rubber, silicon rubber, acrylic rubber, epichlorohydrin rubber, butyl rubber, and cis 1-4 polybutadiene. Synthetic rubber, polyvinyl chloride, ethylene butene rubber, thermoplastic rubber, urethane, derivatives thereof, and the like can be mentioned, and the elasticity is absorbed by the earthquake. The elastic member 20 is an elastic body harder than the pressure-sensitive adhesive of the pressure-sensitive adhesive layer 30. Specifically, the elastic body has an appropriate hardness of 25 to 80 (JIS K6301), more preferably 40 to 80 (JIS). K6301).

  The pressure-sensitive adhesive constituting the pressure-sensitive adhesive layers 30 and 40 is self-adhesive, and this sheet 10 is attached to an adherend (a floor mounted on the sheet 10 and / or a floor on which the sheet 10 is grounded). And adhere to the desk surface due to its adhesiveness. More preferably, the adhesive is capable of attenuating kinetic energy from earthquake shaking and other shocks and vibrations. Specifically, natural rubber adhesives, styrene butadiene / latex adhesives, thermoplastic rubber adhesives, block copolymer adhesives, butyl rubber adhesives, polyisobutylene adhesives, acrylic adhesives, acrylic adhesives Dispersion, vinyl ether polymer adhesive, silicone adhesive, styrene butadiene adhesive, polyisoprene adhesive, polybutadiene adhesive, butadiene-acrylonitrile rubber, polychloroprene adhesive, ethylene vinyl acetate copolymer adhesive And atactic polypropylene pressure-sensitive adhesive, urethane-based pressure-sensitive adhesive, and derivatives thereof.

FIG. 2 (A) is a perspective view of an anti-vibration and vibration-proof sheet according to another embodiment of the present invention, and FIG. 2 (B) is a cross-sectional view thereof.
In this embodiment, the point in which the recessed part 21 is formed in the elastic member 20 is different from previous embodiment. In this example, the recess 21 is formed downward from the upper surface of the elastic member 20, and is implemented as a number of grooves 21 extending in parallel to the lateral direction. The adhesive of the adhesive layer 30 on the upper surface side is also filled in the groove 21. The thickness of the elastic member 20 is suitably 1 to 35 mm, the depth of the groove 21 is suitably 1 to 20 mm, and the thickness of the adhesive layers 30 and 40 excluding the inside of the groove 21 is 1 to 20 mm. Is appropriate. It should be noted that the pressure-sensitive adhesive may be filled only in the recess 21 and the other parts may be arranged without any pressure-sensitive adhesive. Moreover, you may implement only in any one among the adhesive layers 30 and 40. FIG. The width of the groove 21 is suitably about 2 to 40 mm, and the total plane area where the groove 21 is formed is suitably about 20 to 80% of the entire sheet.

FIG. 3A is a plan view of the elastic member of the seismic isolation sheet according to another embodiment of the present invention, and FIG. 3B is a cross-sectional view of the seismic isolation sheet.
In this embodiment, the point that the through hole 22 is formed in the elastic member 20 is different from the previous embodiment. In this example, the through hole 22 penetrates the upper and lower surfaces of the elastic member 20, and a plurality of the through holes 22 are formed. The pressure-sensitive adhesive layers 30 and 40 on the upper and lower surfaces are filled in the through hole 22, and both are connected through the through hole 22. A suitable total area of the through holes 22 is about 5 to 40%. The thickness of the elastic member 20 is suitably 1 to 35 mm, and the thickness of the adhesive layers 30 and 40 excluding the inside of the through hole 22 is suitably 1 to 20 mm for each of the upper surface side and the lower surface side. Alternatively, the pressure-sensitive adhesive may be filled only in the through holes 22 and the other parts may be arranged without any pressure-sensitive adhesive. Moreover, you may implement only in any one among the adhesive layers 30 and 40. FIG.

FIG. 4A is a plan view of the elastic member of the vibration-proof and vibration-proof sheet according to another embodiment of the present invention, and FIG. 4B is a cross-sectional view of the vibration-proof and vibration-proof sheet.
This embodiment is different from the previous embodiment in that both the recess 23 and the through hole 24 are formed in the elastic member 20. Although the recess 23 and the through hole 24 may be provided at different locations, in this example, the through hole 24 is provided inside the recess 23.
The recess 23 is formed downward from the upper surface of the elastic member 20 and is implemented as a number of grooves 23 extending in the lateral direction, and may be linear as shown in FIG. In this embodiment, the L-shaped convex portions in plan view are formed obliquely arranged, and the grooves bent in an L shape between the convex portions are obliquely continued.
The thickness of the elastic member 20 is suitably 1 to 35 mm, the depth of the groove 23 is suitably 1 to 20 mm, and the thickness of the adhesive layers 30 and 40 from the upper surface or the lower surface of the elastic member 20 is the upper surface. 1 to 20 mm is appropriate for each of the side and the lower surface side. Alternatively, the pressure-sensitive adhesive may be filled only in the recesses 23 and the through holes 24, and the pressure-sensitive adhesive may not be coordinated at all in other portions. Moreover, you may implement only in any one among the adhesive layers 30 and 40. FIG. The width of the groove 21 is suitably about 2 to 40 mm, and the total plane area where the groove 21 is formed is suitably about 20 to 80% of the entire sheet. The total area of the through holes 22 is the total area of the sheet. 5 to 40% is suitable.

  In each of these embodiments, the lower surface side of the elastic member 20 can be implemented without providing the adhesive layer 30. Another material such as a synthetic resin sheet may be coordinated on the lower surface of the elastic member 20. However, when a synthetic resin sheet having a small friction coefficient is used, it becomes slippery and measures such as fixing the earthquake-resistant sheet 10 with another fastener or the like are required. Moreover, you may implement by providing recessed parts, such as a groove | channel, also in the lower surface side of the elastic member 20. FIG. The shape of the concave portion on the upper surface side or the lower surface side may be implemented with various changes such as a circular shape or a rectangular shape in plan view in addition to the groove. The shape of the through-hole can also be implemented with various changes such as a circular shape or a rectangular shape in plan view. Further, a plurality of elastic members and adhesive layers may be provided.

These anti-vibration and vibration-proof sheets 10 are under various installation items such as fixtures and instruments (tables, chests, desk furniture, vases, personal computers, TVs, audios, clocks, fish detectors, navigators, radars, etc.) By placing it on the floor, it is placed between the floor, the desk, the ground and other installation surfaces, and protects earthquakes, vibrations and shocks of machines and vehicles, indoor and outdoor equipment, and various equipment such as equipment and instruments. . In particular, even when the adhesive layer is thinned by adding weight when it is laid under a heavy object or the like, the minimum vibration-proof and vibration-proof performance can be maintained by the elastic member having the vibration-proof performance. In addition, by providing concave and penetrating parts, the shape of the concave part is distorted by the load, improving the anti-vibration performance against rolling, and using a pressure-sensitive adhesive with high cohesive strength and adhesive strength to support rolling and pitching. it can. In addition to the above embodiment, the shape of the elastic member 30 can be changed as appropriate. For example, the elastic member 30 may have a relatively complicated structure as shown in FIGS. The shape of the member may be any shape as long as it has anti-vibration performance. In FIGS. 5 and 6 and FIG. 7 shown below, 20a is a convex portion that protrudes relatively to the upper surface side or lower surface side, 20b is a concave portion that is relatively recessed to the upper surface side or lower surface side, and 20c is the upper and lower surfaces. FIG. 5 shows a penetrating portion that penetrates, and in FIG. 5, a convex portion 20a is formed on the upper surface side so that an L shape and an inverted shape thereof face each other, and a concave portion 20b is formed between them. An elliptical through portion 20c is formed between the inverted shape. In FIG. 6, a large number of quadrangular convex portions 20a are formed on the upper surface side, and a lattice-shaped concave portion 20b is formed between the convex portions 20a, and through portions 20c are formed in the respective square convex portions 20a. On the lower surface side, a large number of quadrangular convex portions 20a are formed, and a lattice-shaped concave portion 20b is formed between them, which is the same as the upper surface side. However, the through portion 20c is located at the intersection of the lattice-shaped concave portions 20b. To do.
When an elastic member having vibration-proof performance is provided with a recess or a penetrating part and filled with an adhesive, the adhesive is prevented from deteriorating, the thickness of the adhesive layer is increased, and the change with time Hard to occur. In addition, the load from the heavy object is received by the elastic member having the vibration proofing performance against the adhesive in the concave portion or the penetrating portion, so that this functions as a core material and the adhesive layer is prevented from being crushed. obtain. In particular, when the adhesive layer on the upper and lower surfaces of an elastic member with vibration isolation performance is connected by the adhesive of the penetrating member, high vibration and vibration isolation performance of the entire sheet can be obtained and maintained for a long period of time. It can be done.

  As an example, a three-layer seismic isolation sheet shown in FIG. 7 was prepared. The overall shape of the sheet is a square with a side of 20 mm and a thickness of 6 mm. The elastic member 20 is made of styrene butadiene rubber, has a thickness of 3 mm, and is formed by alternately arranging two types of convex portions 20a having different circular sizes in a plan view having a height of 2.5 mm from the upper surface (of the convex portions 20a). The portion becomes a relative recess 20b). The pressure-sensitive adhesive layers 30 and 40 formed above and below the elastic member 20 are urethane pressure-sensitive adhesives, each having a thickness of 1.5 mm (excluding the thickness of the pressure-sensitive adhesive layer filled in the recesses).

  As Comparative Example 1, an anti-vibration and vibration-proof sheet having a single-layer structure formed only with the same urethane adhesive as the adhesive layer of the example was prepared. The overall shape of the sheet is a square with a side of 20 mm and a thickness of 6 mm. As Comparative Example 2, only the elastic member 20 of the example was used for the test as an anti-vibration and vibration-proof sheet having a single layer structure.

  About said Example and Comparative Examples 1 and 2, earthquake-proof vibration-proof performance was tested. In the test method, when placing a rectangular solid weighing 32 kg on a vibration table that makes a horizontal vibration motion, one each of the anti-vibration and vibration-proofing sheets of the example and the comparative example is placed on each of the four corners of the rectangular parallelepiped (total 4 Coordinated). Three types of horizontal vibration motions of acceleration 1G, frequencies 5, 10, and 20 Hz were given, and the acceleration reduction rate was measured.

  The test results were 25% at a frequency of 5 Hz, 36% at a frequency of 10 Hz, and 64% at a frequency of 15 Hz in Comparative Example 1, and the sheet was displaced by vibration in Comparative Example 2. While the acceleration reduction rate could not be measured, in the example, 50% at a frequency of 5 Hz, 57% at a frequency of 10 Hz, and 83% at a frequency of 15 Hz. In the example, it was confirmed that there was a remarkable effect.

It is a perspective view of the sheet | seat for earthquake-proof vibration isolation which concerns on embodiment of this invention, (B) is the same sectional drawing. It is a perspective view of the sheet | seat for earthquake-proof vibration isolation which concerns on other embodiment of this invention, (B) is the AA sectional drawing. It is a top view of the elastic member of the earthquake-proof vibration-proof sheet | seat which concerns on other embodiment of this invention, (B) is the BB sectional drawing. It is a top view of the elastic member of the earthquake-proof vibration-proof sheet | seat which concerns on other embodiment of this invention, (B) is CC sectional drawing. It is a top view of the elastic member which concerns on other embodiment of this invention, (B) is the DD sectional drawing. It is a top view of the elastic member which concerns on other embodiment of this invention, (B) is a bottom view of the elastic member, (C) is EE sectional drawing. It is a top view of the earthquake-proof vibration-proof sheet | seat which concerns on the Example of this invention, (B) is the FF sectional drawing.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Anti-seismic vibration-proof sheet 20 Elastic member 21 having vibration-proof performance Recess 22 Through hole 23 Recess 24 Through hole 30 Adhesive layer 40 Adhesive layer

Claims (4)

Anti-vibration anti-vibration sheet that protects installed items from vibrations, shocks and vibrations of various mechanical devices and vehicles, etc. by placing them on the bottom of installed items such as indoor and outdoor equipment, various mechanical devices and instruments An elastic member having performance and an adhesive layer laminated on at least one of the elastic member having anti-vibration performance, and the elastic member having anti-vibration performance is formed of an elastic body harder than the adhesive layer. A seismic and vibration-proof sheet characterized by A concave portion is formed on the surface of the elastic member, at least one of the upper surface and the lower surface, and the pressure-sensitive adhesive layer is formed on the surface thereof, and the pressure-sensitive adhesive layer is also filled in the concave portion. The earthquake-proof vibration-proof sheet according to claim 1. A pressure-sensitive adhesive layer is formed on both the upper and lower surfaces of the elastic member having anti-vibration performance, and a penetrating portion is formed through the elastic member having anti-vibration performance. The pressure-sensitive adhesive layer is also filled in the through-hole. The seismic and vibration-proof sheet according to claim 1, wherein the upper and lower pressure-sensitive adhesive layers are connected to each other. A concave portion is formed on at least one of the upper surface and the lower surface of the elastic member having vibration isolation performance, and a through portion is formed in the elastic member having vibration isolation performance so as to penetrate the upper and lower sides. The anti-vibration and vibration-proof sheet according to claim 1, which is also filled in the part.

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