JPH0393292A - Foot block - Google Patents

Abstract

PURPOSE:To provide an aseismic effect in either case of horizontal and vertical seismic waves by a constitution in which a shaft supporting a casing can slide on a tray which is seated on a foundation with a damper in between. CONSTITUTION:An elastic member 6A attached to a plate 6B forms a damper 6, which is fixed on the bottom 2B of a tray 2, and the plate 6B is fixed on a friction member 5. A shaft 1 is attached to the bottom of a case by a screw 13, so that its end can freely slide with a low-friction member 5 on a contact plane 2A of the tray 2. The tray 2 will swings vertically with respect to the foundation B when the elastic member 6A of the damper 6 deforms. If a seismic wave appears in a horizontal direction A on the foundation surface 6, springs 3 expand and contract. As a result, the low-friction member 5 at the end 1A slides along the contact plane 2A, resulting in an aseismic effect. If a seismic wave appears in a vertical direction B, on the other hand, it is absorbed by the elastic member 6A.

Description

[Detailed Description of the Invention] [Summary] The purpose of this invention is to improve the earthquake resistance effect in the vertical direction with respect to a pedestal provided at the bottom of a casing and shaped to support the casing from the installation surface. , a tray that has a shaft that is locked to the bottom of the casing, and a contact surface that is slidably abutted in the horizontal direction by interposing a low-friction member that is fixed to the tip of the shaft; a spring that locks the tip to the corresponding contact surface; a damper that is fixed to the outer periphery of the tray and damps vibrations in the vertical direction of the tray;
A friction member is provided, one of which is fixed to the damper and the other of which is brought into contact with the installation floor, so as to support the casing from the installation surface.

[Industrial application field]

The present invention relates to a pedestal provided at the bottom of a housing and shaped to support the housing from an installation surface.

A casing that houses an electronic device is usually formed as shown in the explanation of casing installation in FIG. 4.

FIG. 4(a) is a side view, and FIG. 4(b) is a plan view of the bottom.

As shown in FIGS. 4(a) and 4(b), the bottom 7 of the housing 7
A pedestal 10 is provided at the corner of A, and the pedestal 10 is fixed to an installation surface 4 such as the floor on which the casing 7 is installed at a predetermined location. Recently, earthquake-proofing measures have been taken when fixing the pedestal 10 like this.

Therefore, it is desirable that the pedestal 10 is already provided with earthquake-resistant measures, and that the pedestal 10 is simply fixed to the installation surface 4 so that the earthquake-resistant measures can be taken.

[Conventional technology]

Conventionally, the configuration was as shown in the conventional side views of Figure 3 (a) and (b). As shown in FIG. 3(a), a low-friction member 5 such as carbon is fixed to the tip IA of the shaft 1 on which the screw IB is formed, and the low-friction member 5 is interposed at the tip IA of the shaft I. As a result, it comes into contact with the contact surface 2^ of the tray 2, and furthermore, a friction member 8 made of resin or the like is fixed to the outer periphery of the tray 2.
is shaped so as to come into contact with an installation surface 4 such as a floor with a friction member 8 interposed therebetween.

Further, a spiral spring 3 and a bellows-shaped cover 11 made of a flexible material are stretched between the shaft l and the tray 2, and the tip IA of the shaft A felt 12 impregnated with oil is provided, an appropriate amount of oil is dripped from the felt 12, an oil film is formed on the contact surface 2A, and the low friction member 5 is freely slid on the contact surface 2A. The shaft l is shaped so that it slides along the contact surface 2A. Therefore, as shown in (b), the shaft 1 is fixed to the bottom 7A of the housing 7 by screw IB, and the housing 7 is formed so as to receive the load of the housing 7 and support the housing 7 from the installation surface 4. For example, if a seismic wave as shown by arrow 8 is generated due to an earthquake, the shaft 1 will be slid along the contact surface 2A in the opposite direction to the direction of arrow 8, and the casing 7 will have a structure to prevent it from being affected by the seismic waves. It can be done. In this case, the spring 3 and the cover 11 are shaped so that they can be freely expanded and contracted and do not interfere with the sliding of the shaft l, and the cover 11 is shaped with an oil film to prevent dust from entering the contact surface 28. It is a formalized thing. Also, due to large seismic waves, the low friction member 5 may be damaged by the contact surface 2A.
The sliding range that slides is the contact surface 2 formed on the tray 2.
When exceeding A, the friction member 8 slides on the installation surface 4, and the tray 2 is shaped so as to be able to move along the installation surface 4.

[Problem to be solved by the invention]

With such a structure in which the shaft 1 is slid along the abutting surface 2A of the receiving tray, an earthquake-resistant effect can be obtained if the seismic waves caused by an earthquake are in the horizontal direction in the direction of arrow A as shown in FIG. 3(b). However, if the seismic waves are direct and vertical, the vibrations will not be attenuated and the casing 7
will be joining.

Therefore, the conventional structure has had the problem of not being able to provide earthquake resistance against vertical earthquakes.

Therefore, an object of the present invention is to improve the seismic effect in the vertical direction.

[Means to solve the problem]

FIG. 1 is a diagram explaining the principle of the present invention.

As shown in FIG. 1, a shaft 1 that is locked to the bottom 7A of the housing 7 and a low friction member 5 that is fixed to the tip IA of the shaft 1 are interposed to allow free sliding in the horizontal direction. A saucer 2 having a contact surface 2A that comes into contact with the contact surface 2A, and the tip IA
A spring 3 is fixed to the spring 3, a damper 6 is fixed to the outer periphery of the tray 2, and damps vibrations in the vertical direction of the tray 2, one of which is fixed to the damper 6, and the other is fixed to the installation floor 4.
The housing 7 is provided with a friction member 8 that comes into contact with the mounting surface 4, and is arranged to support the housing 7 from the installation surface 4.

With this configuration, the above-mentioned problem is solved.

[Function] That is, the influence of seismic waves in the horizontal direction is eliminated by the sliding movement between the tip IA of the shaft l and the contact surface IA of the tray 2, and the damper 6 and friction between the installation floor 4 and the tray 2 are eliminated. By providing the member 8, vibrations in the vertical direction caused by seismic waves are attenuated, thereby improving the seismic effect.

Therefore, compared to the conventional method where seismic effects could not be obtained against seismic waves in the horizontal direction, it is possible to obtain seismic effects against seismic waves in both the horizontal and vertical directions.
The earthquake resistance effect will be improved.

〔Example〕

The present invention will be explained in detail below with reference to FIG.

FIG. 2 is a side view of an embodiment according to the present invention.

Like numbers refer to like objects throughout the design.

As shown in FIG. 2, a damper 6 formed by fixing an elastic member 6^ shaped into a corrugated shape of a rubber material or the like to a metal plate 6B is fixed to the bottom part 2B of the receiving tray 2, Furthermore, the friction member 5 is fixed to the plate 6B, and the other features are the same as those described above.

Therefore, the tip IA of the shaft 1, which is fixed to the bottom 7A of the housing 7 by the screw 13, is freely slid along the contact surface 2A of the receiving tray 2 with the low friction member 5 interposed therebetween. like,
In addition, the receiving tray 2 can freely swing in the vertical direction with respect to the installation surface 4 by deformation of the elastic member 6A of the damper 6.

Therefore, when a horizontal seismic wave as shown by arrow A occurs on the installation surface 4, the spring 3 and the cover 11 are expanded and contracted, and the low friction member 5 at the tip 1A is slid along the contact surface 2A. , seismic waves are not transmitted to the shaft 1, and an earthquake-resistant effect can be obtained, and the arrow B on the installation surface 4
When a seismic wave in the vertical direction shown in is generated, an earthquake resistance effect can be obtained by vibration absorption by the elastic member 6A of the damper 6, and it is possible to deal with earthquake resistance in both the horizontal direction of arrow A and the vertical direction of arrow B. becomes. [Effects of the Invention] As explained above, according to the present invention, by allowing the shaft supporting the casing to slide on the receiving plate, the shaft is not affected by seismic waves in the horizontal direction. At the same time, by providing a damper between the tray and the installation surface,
The receiver can be made so that it is not affected by vertical seismic waves. Therefore, in the past, seismic effects could not be obtained only against seismic waves in the horizontal direction, but now seismic effects can be obtained against seismic waves in both the horizontal and horizontal directions.
The seismic effect can be improved, and the practical effect is great.

[Brief explanation of drawings]

Fig. 1 is an explanatory diagram of the principle of the present invention, Fig. 2 is a side view of an embodiment of the present invention, and Fig. 3 (a)
) (b) is a conventional side view, FIG. 4 is an explanation of the installation of the casing, and (a) is a plan view of the bottom. is a side view. (b) In the figure, 1 is the shaft, 3 is the spring, 5 is the low-friction member, 7 is the housing, IA is the tip, and 7A is the bottom. 2 is the saucer, 4 is the installation surface, 6 is the damper, and 8 is the bottom. Masaru member, 2A is the contact surface, explanatory diagram of the principle of the present invention (Q) (b) Side view of the hammer Figure 3 (Main) Reply of the book 3! The previous date and month diagram Figure 4

Claims (1)

[Claims] a shaft (1) that is locked to the bottom (7A) of the housing (7);
A low friction member (5) fixed to the tip (1A) of the shaft (1)
), the tray (2) has an abutment surface (2A) that can be slidably abutted in the horizontal direction by interposing the distal end (2A);
1A) to the corresponding contact surface (2A).
), and a damper (6) fixed to the outer periphery (2B) of the tray (2) to damp vertical vibrations of the tray (2).
, one side is fixed to the damper (6) and the other side is fixed to the installation floor (
4) and a friction member (8) that comes into contact with the casing (
7) from the installation surface (4).