JP4540008B1 - Seismic isolation mechanism for floor-standing equipment - Google Patents

Abstract

An object of the present invention is to provide a seismic isolation mechanism in which floor-standing equipment such as furniture installed along a wall surface does not move away from or fall over even when the floor is shaken by an earthquake.
A grounding member is disposed on the front end side and the rear end side of the lower surface of the instrument, and the movement resistance of the rear end side grounding member to the front of the instrument is increased as much as possible, and the rear end side grounding member is moved rearward. The resistance and the resistance to move the front end side grounding member in both the front and rear directions were set small enough to move the equipment without falling down.
[Selection] Figure 1

Description

The present invention relates to an improvement of a seismic isolation mechanism for floor-standing equipment such as furniture.

As a conventional seismic isolation mechanism, a grounding member is arranged on the lower surface of furniture installed along a wall surface, and the resistance of the grounding member on the wall surface side is smaller than that of the grounding member on the side far from the wall surface. A seismic mechanism is shown in JP-A-10-127392. The effect of the present invention is that the furniture does not move away from the wall surface by moving to the grounding member side with less resistance against the floor swinging.

JP-A-10-127392

However, in the conventional mechanism, the movement resistance of the grounding member on the side far from the wall surface is positively increased, and when a swing in the direction away from the wall surface occurs, depending on the magnitude of the force, the resistance of the grounding member The furniture is ugly and can fall.

In the present invention, the grounding members are arranged on the front end side and the rear end side of the lower surface of the instrument, and the movement resistance of the rear end side grounding member to the front of the instrument is increased as much as possible, and the rear end side grounding member is moved rearward. The resistance and the resistance of movement of the front end side grounding member in both the front and rear directions were set small enough to move the equipment without falling down.

By adopting the above-described configuration, it is possible to obtain an effect that the furniture does not fall down even if the floor surface is shaken, and is difficult to be separated from the wall surface.

1 is a structural diagram of an embodiment of the present invention.

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a diagram showing an embodiment of the present invention.
Rollers are disposed on the front end side and the rear end side of the lower surface of the furniture (3). The front end side roller (5) has the smallest movement resistance in both the A direction and the B direction. The rear end roller (4) has a one-way rotation structure in the B direction and has a minimum movement resistance in the B direction, but does not rotate in the A direction and has a large movement resistance.

When the floor (1) swings in the B direction due to an earthquake, the furniture (3) tries to move in the A direction relatively, but the rear end roller (4) does not rotate and friction with the floor (1) Resist the movement with resistance. However, in the case of a larger swing, the furniture (3) tends to tilt in the direction A due to the inertial force, the rear end roller (4) floats from the floor (1), and only the front end roller (5) is loaded with weight. Is done. At this time, since the front end side roller (5) has no movement resistance, it rolls out in the A direction, and immediately after that, the inclination of the furniture (3) returns to its original state and the fall is prevented.

When the floor surface (1) swings in the A direction due to the earthquake swinging back, both the front end roller (5) and the rear end roller (4) have no movement resistance, so the furniture ( 3) approaches the wall (2). Even if the shaking of the earthquake is repeated, the movement (3) is repeated, so that the furniture (3) does not fall apart without largely leaving the wall (2) while causing some shaking. Further, fluttering and impact of the furniture (3) can be further alleviated by adding and combining other functions such as providing a cushion (6) on the back of the furniture (3).

In addition, this invention also assumes that this mechanism is applied to a stand separate from the equipment, and the equipment is placed on the stand for seismic isolation.

The present invention is applied to various floor-standing equipment such as furniture.

1 Floor 2 Wall 3 Furniture 4 Rear end roller 5 Front end roller 6 Cushion

Claims (1)

It is a seismic isolation mechanism for floor-standing equipment, and grounding members are arranged on the front end side and rear end side of the equipment on the bottom of the equipment, and the movement resistance of the rear end side grounding member to the front of the equipment is as large as possible. The movement resistance of the rear end side grounding member to the rear and the movement resistance of the front end side grounding member in both the front and rear directions are set to be small enough according to the weight of the equipment so that the equipment can move without falling down. A seismic isolation mechanism that does not fall apart from the wall even if it repeats.

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