JPH03213746A - Damper - Google Patents

Abstract

PURPOSE:To prevent breakage even at the outbreak of an earthquake or the like, by equipping facing plates at the upper and lower parts of a high damping material, and at the same time making a sliding plate butt against at least one of these facing plates, and in addition, equipping a receiving plate in contact with the sliding plate. CONSTITUTION:A high damping material 10 consisting of a high molecule viscosity elastic body of a rubber formation is equipped with metal facing plates 11, 12 which are integrated with the upper and lower parts of this material 10. And a sliding plate 13 formed of nylon resin is fixed on the lower side of the lower facing plate 12. A receiving plate 14 butting against this nylon resin is equipped. Facing plates 11, 12 which have the material 10 between them, are equipped at their peripheries with projecting stripes 17, 18 that cross with each other horizontally and also are made to be confronted with each other with a predetermined interval retained. As a result, in the case of a strong rolling caused by an earthquake or the like, further influence against the damping material is to be blocked as these projecting stripes 17, 18 come into contact. And the sliding plate 13 is to slide against this rolling.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Application) The present invention relates to a damping device for anti-vibration measures to suppress minute vibrations.

(Prior Art) In recent years, as technology becomes more high-tech, there are many devices that require measures against vibration. Examples of these include semiconductor factories, bio-related equipment, precision analytical instruments, etc., and until recently, vibration isolation devices such as rubber elastic bodies were simply used to cope with the problem.

However, the techniques using rubber elastic bodies have the disadvantage that they are almost ineffective against minute vibrations and that their vibration damping function is not very sufficient.

For this reason, damping devices using, for example, rubber-based polymeric viscoelastic bodies as damping materials have come into use.

FIG. 4 shows the basic shape of this damping device a. In the figure, reference numeral 1 is a polymeric viscoelastic body, and face plates 2.3 made of metal, for example, are joined to the upper and lower sides of the polymer viscoelastic body. By using the damping device a with this structure, it has become possible to effectively attenuate minute vibrations, but on the other hand, especially in earthquakes with large displacements in the horizontal direction, the deformation of the damping material becomes large, so in some cases In some cases, the damping material itself may break.

For this reason, as shown in FIG. 5, a stopper 5, typically made of rubber or a spring, was provided around the device X, but it was basically impossible to provide seismic isolation during earthquakes and the like. In the figure, 4 is a laminate of a metal plate and a rubber material that normally supports the device X.

(Objective) An object of the present invention is to provide a damping device that constantly exhibits a damping function of minute vibrations.

(Structure) The present invention has been made to achieve the above object, and includes face plates on the top and bottom of a high-damping material, a sliding plate in contact with at least one of the face plates, and a sliding plate in contact with at least one of the face plates. The damping device is characterized in that a receiving plate is provided in contact with the damping device, and the sliding plate is preferably fixed to either the face plate or the receiving plate.

Particularly preferably, a sliding plate is fixed to the lower plate of the high damping material, and furthermore, in order to keep the horizontal displacement of the high damping material at a constant level, a displacement control function is provided to the upper and lower face plates. More specifically, the above-mentioned upper and lower face plates are preferably provided with face portions that intersect with each other in the horizontal direction around the upper and lower face plates to control horizontal displacement.

In the present invention, there are various high damping materials.

For example, it utilizes the viscosity and plastic properties of unvulcanized rubber, and examples thereof include rubber-based, acrylic resin-based, and asphalt-based polymeric viscoelastic bodies.

There are various types of sliding plates, including resin-based ones such as nylon resin, polyacecool resin, and metal-based ones such as sintered metal (with lead as the main component).

On the other hand, the receiving plate is not particularly limited, but as mentioned above, a material with low slip resistance is desired.

In addition, the function of controlling the horizontal displacement of the high-damping material requires the provision of protrusions from the periphery of the double-sided plate as described above.
It is conceivable that the shapes come into contact with each other when a predetermined displacement is reached, but the shape is not limited to this.

(Function) Because the damping device of the present invention has such a structure, the damping caused by minute vibrations is absorbed by the high damping material, and the sliding plate is fixed against large horizontal amplitudes such as those caused by earthquakes. It corresponds to this by sliding horizontally between the face plate or receiving plate on the opposite side.

(Specific Example) FIG. 1 shows a partially cutaway side view of a first embodiment of the damping device A of the present invention.

In the figure, reference numeral 10 denotes a high damping material made of a rubber-based polymeric viscoelastic material, and metal face plates 11 are integrally formed above and below this material.
．． 12 are provided. In this example, the bottom plate 12
A sliding plate 13 made of nylon resin is fixed to the lower side. A receiving plate 14 is provided which is in contact with this nylon resin.

The attenuation device A configured in this manner is provided below the equipment X, similar to a in FIG. 5. In such a case, the vibration isolation device 4 is designed to support the normal load of the equipment X, and the damping device A is designed so that the load of the equipment is not applied to it, so that only the displacement caused by vibration is sensed. ing.

Of course, when applying the present invention, the presence of the stopper 5 is not basically essential.

Now, in response to a large vibration in the horizontal direction, the present damping device A moves as shown in FIG.

In other words, the high-damping material 10 follows a certain amount of shaking and deforms in the horizontal direction as shown in the figure, but the sliding plate 13 deforms against the receiving plate 14 when the shaking exceeds the window. sliding,
It is designed not to apply more strain to the high attenuation material lO.

FIG. 3 shows another example of the present invention, in which a face plate 11.12 sandwiching a high-damping material 10 has protrusions 17.18 horizontally intersecting around it and facing each other at a predetermined interval. It's a shame. Therefore, in the event of a large lateral vibration such as an earthquake, the protrusions 17 and 18 will come into contact with each other to prevent any further influence on the damping material. The sliding plate then slides against this lateral shaking.

The relationship between the protrusions 17 and 18 is such that the protrusions 17 and 17 surround the upper face plate 11 and the lower face plate 12, but it goes without saying that the face plates 11 and 12 may be used in the opposite manner. It is.

In some cases, the face plate 12 and the sliding plate 13 on the side can be made of the same material that has both functions, or conversely, the sliding plate 13 and the receiving plate 14 can be made of the same material. obtain.

Although not shown, the vibration isolating device 4 and the damping device A
Even better effects can be achieved by stacking them in multiple stages.

(Effects) Because the attenuation device of the present invention has the above-described structure, the attenuation device is not destroyed even in the event of an earthquake, etc., and therefore can be fully put to practical use. .

[Brief explanation of drawings]

FIG. 1 is a partially cutaway side view of the first embodiment of the damping device of the present invention, FIG. 2 is a cross-sectional view taken at the center when a horizontal displacement is applied to the damping device in FIG. 1, and FIG. 3 is the second
FIG. 4 is a side view of a conventional damping device, and FIG. 5 is a side view showing an example of use of the conventional damping device. A... Attenuation device of the present invention, X... Equipment, 10.
... Damping material, 11.12 ... Face plate, 13 ...
Sliding plate, 14... catch plate. Patent applicant Bridgestone Corporation

Claims (3)

[Claims] (1) A damping device characterized in that face plates are provided above and below a high damping material, a sliding plate is brought into contact with at least one of the face plates, and a receiving plate is further provided in contact with the sliding plate. (2) The damping device according to claim 1, wherein the sliding plate is fixed to the face plate. (3) The damping device according to claim 1, wherein the sliding plate is fixed to the receiving plate.