JPH1018643A - Base isolation device of house - Google Patents

Abstract

PROBLEM TO BE SOLVED: To bring out an effective vibration-isolation mechanism without spoiling a pleasant habitability, by leading a high pressure liquid into a pressure pocket to set a house afloat. SOLUTION: When a vibration-detector detects a preset vibration a high pressure liquid is led to a pressure pocket 5 installed between the foundation 3 and the house sill 4 through a hydraulic circuit to set the sill 4 afloat from the foundation 3 and to be horizontally transferable. As a result, a base isolation function arises. The base isolation device which does not act against a high frequency fine vibration of the ground caused by traveling vehicles and a gentle vibration of a house caused by wind forces but acts against a breakable vibration of a house caused by an earthquake, can be easily actuated by only presetting of the vibration detector.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vibration isolator for a house, which has a function of supporting a house so as to be able to move horizontally by a liquid pressure when the house is vibrated, thereby isolating the house in case of an earthquake or the like.

[0002]

2. Description of the Related Art Generally, it is necessary to fix a house or the like to the ground, so that it has not usually been possible to isolate the house itself against vibration of the ground when an earthquake occurs. For this reason, houses have been provided with vibration resistance. In recent years, a vibration isolator for a house, which was developed for the purpose of isolating a house from vibrations of the ground to prevent danger, makes the house movable with respect to the ground so that power is not transmitted from the ground to the house. I have.

[0003]

Although the above-described vibration isolator attenuates the vibration of a house, it also operates due to minute high-frequency vibration, wind and the like. For example, even if the ground vibrates minutely, such as when an automobile or a train passes near the house, the vibration isolation function works, and the house may move horizontally, or the house may move horizontally due to wind force. In other words, the house frequently moves depending on the location conditions of the house, which often causes a significant discomfort in living.

[0004]

In order to solve the above-mentioned problems, a vibration isolator for a house according to the present invention comprises a vibration detecting means capable of detecting a set vibration of a house, and a base fixed to the ground. A pressure pocket provided between the base and the base of the house supported on the base, and a hydraulic circuit for guiding a high pressure to the pressure pocket by a signal from the vibration detecting means, wherein a high pressure is applied to the pressure pocket. It is characterized in that the base of the house rises from the base so that it can move horizontally when guided. With such a configuration, it does not operate with respect to high-frequency micro-vibration of the ground due to the passage of an automobile or the like and gentle vibration of a house due to the force of wind or the like. It is possible to operate the vibration isolating device only by setting the vibration detecting means. Further, by using the liquid pressure, it is possible to generate a strong force with a compact device, and the operation is assured.

When it is desired that the vibration isolator be provided with a function of restoring the position of the house, a lock pin having a tapered upper end surface is attached to an elastic body such as a spring from a base so as to fit into an inlet hole for the pressure pocket. May be provided in a convex shape. In other words, when the house where pressure is led to the pressure pocket rises,
The lock pin is pushed by the pressure, and even if the house moves horizontally at that time, when the pressure disappears and the house descends, the entrance hole is guided by the tapered surface provided at the upper end of the lock pin, so that the entrance hole is connected to the lock pin. The base of the house moves to mate, so that the house returns to its original location.

[0006]

An embodiment of the present invention will be described below with reference to the drawings. 1 and 2, a vibration isolating device 1 for a house according to the present invention includes a vibration detecting means 2 capable of detecting a set vibration of a house, a base 3 fixed to the ground with an anchor 31 or the like, and a base 3 on the base 3. A pressure pocket 5 provided between the housing base 4 and the electric signal 2 from the vibration detecting means 2.
And a hydraulic circuit 6 for introducing a high pressure to the pressure pocket 5 at S. When the high pressure is introduced to the pressure pocket 5,
Is characterized in that it floats from the base 3 so that it can move horizontally.

In this embodiment, the concave surface at the upper end of the base 3
The convex surface at the lower end of the base 4 is loosely loosely fitted, and the heights of the concave and convex portions are equal. A sealing groove 53 is provided on the upper surface of the concave surface, and a sealing material 52 is fitted therein. The base 3 and the base 4 are slid on the upper surface of the concave surface so as not to leak liquid. In addition, a pressure pocket 5 is formed in the lower surface of the convex portion at the lower end of the base 4. The clearance between the concave portion of the base 3 and the convex portion of the base 4 into which the loose fitting is performed is used as a drain 51, and the drain 51 is communicated with the port B. On the base 4, for example, pillars 8 of a house are attached by screws 41 or the like. Since there are generally many pillars in a house, it is of course possible to install as many as the number of pillars according to the number of pillars, or only some pillars within the range where the vibration isolation function is effectively exhibited. This vibration isolator may be provided, and other pillars may have only the function of being horizontally movable with respect to the ground. The hydraulic circuit 6 includes a reserve tank 61.
And the motor 6
5 driven by a hydraulic pump 62 and a hydraulic pump 62
And an on / off valve 63 also attached to the outlet of the hydraulic pump 62 in parallel with the accumulator 64. The outlet of the on / off valve 63 is connected to the high pressure port A ′, and the tank 61 is connected to the low pressure port B ′.
The vibration detecting means 2 detects the vibration of the ground and converts the vibration into an electric signal. The vibration detecting means 2 determines the electric signal from the vibration sensor 21 and drives the on / off valve 63 to the open side by arbitrary vibration. A control circuit 22 capable of outputting the signal 2S is provided. The piping and electric signal lines of these hydraulic circuits are all housed in a valve block 66, and as shown in FIG. 2, the hydraulic circuit 6 and the vibration detecting means 2 are formed as an integral body.
Fixed to the ground. And the high pressure port A 'is shown in FIG.
, And the low pressure port B 'is connected to port B in FIG.

The operation of this embodiment having the above-described configuration will be described below. For example, when the ground vibrates, the vibration sensor 21 converts the vibration into an electric signal and transmits the electric signal to the control circuit 22. If the control circuit 22 is set to output the electric signal 2S when it is determined from the amplitude, frequency, and the like of the electric signal that vibration of the ground may damage the house due to an earthquake or the like, the setting is performed. When the ground vibrates as described above, the control circuit 22 drives the on / off valve 63 to the open side, and the hydraulic pressure accumulated in the accumulator 64 changes the ports A ′, A
Through the pressure pocket 5 to lift the house base 4 and make the house horizontally movable with respect to the ground. As a result, the ground vibration is not transmitted to the house, and a vibration isolation function is generated. When the vibration stops and the on / off valve 63 is closed to stop the pressure supply, the liquid in the pressure pocket 5 is drained from the gap 5 a formed between the base 4 and the base 3.
To the reserve tank 61 through ports B and B '.
Will be collected. As a result, the house base 4 descends and comes into close contact with the base 3 again. At this time, since the liquid in the drain 51 is sealed by the seal 52, it does not leak to the outside.
Conversely, when the vibration detecting means 2 has no fear that the ground vibration will destroy the house,
If it is determined that the earthquake is a weak earthquake or the like, the on / off valve 63 is kept closed, so that the vibration isolator 1 does not operate. The accumulator 64 is provided because it is necessary to quickly guide the hydraulic pressure to the pressure pocket 5 when the ground vibrates, and at the same time, the power supply is stopped in an emergency such as an earthquake, and the pump 62 is stopped.
This is because in many cases it cannot be used as a vibration isolation power source. In other words, if the accumulator 64 is used as the liquid pressure source of the vibration isolator 1, an external power source is hardly required at the time of operation of the device, so that there are few failures and the device is suitable for an emergency such as an earthquake. Therefore, the pump 62 need only be driven during normal times only when the hydraulic pressure of the accumulator 64 becomes lower than a certain level. Incidentally, a small amount of electric power is sufficient for driving the vibration detecting means 2 and the on / off valve 63. Therefore, if electric power is supplied from a battery or the like, the operation is more reliable and preferable in an emergency.

In addition, the function of returning the position of the house to the vibration isolator 1
When it is desired to provide a lock pin 7 having a tapered upper end surface from the base 3 with an elastic body 71 such as a spring, the lock pin 7 is fitted to the inlet hole 42 from the port A to the pressure pocket 5. I just need. That is, when the pressure is guided to the port A, the lock pin 7 is pushed by the pressure, the pressure is guided to the pressure pocket 5, and the house floats. Even if the house moves horizontally at this time, the base of the house moves so that the inlet hole 42 fits into the lock pin 7 by the guide of the tapered surface provided at the upper end of the lock pin 7 when the pressure is lost and the house descends. As a result, the house returns to its original location. Such a position return mechanism may be provided at other suitable places.

As described above, the vibration isolating function can be set to operate according to the level of ground vibration, so that the vibration isolating device 1 is operated only for vibrations such as an earthquake that may destroy the house. It becomes possible. In addition, since the floating of the house, which is a vibration isolation function, is performed by hydraulic pressure, the device itself is compact and operates reliably. It should be noted that the present invention is not limited to only the embodiments described above.
Only one vibration isolation device 1 may be installed on a base that supports the entire house. Even when the apparatus is installed for each column, only one hydraulic circuit 6 and one vibration detecting means 2 may be used, and piping may be connected in parallel from ports A ′ and B ′ to ports A and B of each column. If only the vibration detection sensor 21 is installed on the ground, the other hydraulic circuits 5 and the control circuit 22 can be installed at any position.

In addition, the configuration of each part is not limited to the illustrated example, and various modifications can be made without departing from the spirit of the present invention.

[0012]

The present invention is embodied in the form described above and has the following effects. ADVANTAGE OF THE INVENTION According to the vibration isolator of the house by this invention, it does not operate | move with respect to the gentle high frequency vibration of the ground due to the high frequency micro vibration of the ground due to the passage of the vehicle or the like, or the wind, etc. It is possible to operate the vibration isolator only for vibrations having a vibration only by setting the vibration detection means. That is,
Since the vibration isolator does not work excessively during normal occupancy, there is a special effect that the vibration isolator can be installed while maintaining comfortable living. In addition, since the floating of the house, which is a vibration isolation function, is performed by hydraulic pressure, the device itself is compact and operates reliably.

[Brief description of the drawings]

FIG. 1 is a partially broken front view of a vibration isolator of a house showing one embodiment of the present invention.

FIG. 2 is a front view of a hydraulic circuit and vibration detection means of the embodiment.

FIG. 3 is a schematic diagram of a circuit of a hydraulic circuit and a vibration detecting unit of the embodiment.

FIG. 4 is a vertical end view of a house position automatic return mechanism of the embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Vibration isolation device 2 ... Vibration detection means 3 ... Base 4 ... House base 5 ... Pressure pocket 6 ... Hydraulic circuit

Claims (1)

[Claims] 1. A vibration detecting means capable of detecting house vibration of a set vibration, a pressure pocket provided between a base fixed to the ground and a house base supported on the base, and the vibration detection And a hydraulic circuit for guiding a high pressure to a pressure pocket by a signal from the means, wherein the house base rises from a base so that the house base can move horizontally when a high pressure is guided to the pressure pocket. A house vibration isolator.