JPS5816137B2 - Kanshinkikou - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electric shock mechanism that operates in response to vibrations caused by earthquakes and that electrically opens and closes switches and the like and mechanically opens and closes valves such as shutoff valves.

Conventional vibration sensing mechanisms include pendulum type, drop weight type, electric type, and magnetic type, but all of them operate immediately when the vibration exceeds the level of a new device, so they are difficult to handle and prone to trouble due to malfunction. It also had the disadvantage of a complicated structure and frequent failures.

Furthermore, another disadvantage of each pendulum type is that it is necessary to increase the natural frequency of the pendulum itself to the frequency of the earthquake.
The drop weight type has the disadvantage that the mounting direction is restricted to the horizontal direction, the electric type cannot operate in the event of a power outage, and the magnetic type has the disadvantage of being easily affected by deterioration of magnetism and dust.
Each of these was difficult in practice.

In view of the above circumstances, the present invention aims to provide a vibration sensing mechanism that is convenient to handle and has an extremely simple structure.

To achieve the above purpose, a vibration-sensing mechanism is constructed by a container whose inner surface is tapered into an inverted cone and a sphere housed within the container, and the nuclear sphere generally moves in a spiral motion due to vibrations at the time of an earthquake, especially transverse waves. This is achieved by allowing it to rise.

Next, the present invention will be explained based on embodiments shown in the drawings.

Figures 1 and 2 show how vibrations caused by an earthquake are electrically converted via a switch.

In FIG. 1, reference numeral 1 denotes a container whose inner surface is tapered into an inverted cone, and a contact portion 3 of an electric switch 2 protrudes from the bottom of the container 1.

A ball 6 in a free state is supported on the contact portion 3 via a seat plate 5.

4 is a spring disposed between the bottom of the container 1 and the seat plate 5;
is a nut that fixes the switch 2 and the container.

Here, the weight of the ball 6 pushes down the contact part 3 against the elasticity of the spring 4, and when the weight of the ball 6 is removed, the contact part 3 rises and the switch 2 performs a switching action. .

8 is its connection terminal. In FIG. 2, numeral 9 is a container whose inner surface is tapered into an inverted cone, as in FIG. 1, and whose bottom is spherical so that the ball 10 can easily roll.

Reference numeral 11 denotes an electric switch fixed to the upper part of the container 9 via a nut 12, and a contact portion 14 of the switch 11 projects into the container 9 by a snap action.

13 is a connection terminal. FIG. 3 shows a shutoff valve incorporating the vibration sensing mechanism of the present invention.

15 is a main body, inside which an inlet 16 and an outlet 17 are passages 18.
, a cavity 21 communicating through the through hole 19 and the valve port 20 is provided.

The inner surface of the cavity 21 is formed into an inverted conical tapered shape, and furthermore, a valve body 22 facing the valve port 20 is engaged with the upper part of the cavity 21 via an engagement protrusion 23 so as to be able to rise. .

27 is a sphere accommodated in the empty space 21 in a free state.

Further, the valve body 22 is provided with a communication hole 24 and a four-portion 25 at the center, and a reset rod 26 that passes through the main body 15 in an airtight manner through an O-ring 28 faces the recess 25 .

29 is a spring disposed between the head of the reset rod 26 and the main body 5.

Furthermore, in addition to the embodiments described above, a pilot-operated shutoff valve may be used in which the movement of the ball is magnified by a cam or a lever mechanism to open and close a pilot valve.

Next, its effect will be explained.

The present invention is directed to transverse waves that cause particularly great damage during earthquakes.

First, the embodiment shown in FIG. 1 will be explained in detail.

During an earthquake, especially when transverse waves are added to this example,
The ball 6 collides with the inner wall of the container 1, receives a force directed toward the container 1-L, and gradually begins to rise while making a spiral motion.

Here, the above upward movement is caused by the elasticity of the ball 6 and the container 1,
It can be set in advance based on the vibration of the container 1, the inclination of the tapered surface, the weight of the ball, etc., and is not greatly influenced by the horizontality of the container 1.

Therefore, when vibrations of a predetermined strength or higher continue for a predetermined period of time, the ball 6 separates from the seat plate 5, and the contact part 3 of the switch 2 The contact point is switched and the electrical circuit connected via the terminal 8 is switched, and an earthquake-resistant device or the like is activated separately.

Next, FIG. 2 will be explained.

In this example! In this case, due to vibrations that exceed a predetermined level during an earthquake and continue over time, the ball 10 rises in a spiral motion on the inner surface of the container 9, directly contacts the contact portion 14 of the switch 11, and switches the contact to the terminal. This device switches the circuit to which 13 is connected and activates a separate seismic device, etc., and operates with larger vibrations than the embodiment shown in FIG.

Next, the embodiment shown in FIG. 3 will be explained.

During an earthquake, the ball 27 inside the empty room 21 moves in a spiral motion due to vibrations that are stronger than a predetermined level and continue for a certain amount of time, causing the empty room 2 to move in a spiral manner.
1, and the nuclear sphere 27 directly collides with the valve body 22 due to the kinetic energy given by the vibration, pushing up the valve body 22, thereby pushing the valve port 2 through the inlet 16.
The valve body 22 closes the valve port 20 in cooperation with the fluid pressure flowing through the valve body 20 in the direction of the outlet 16.

After an earthquake, by pushing down the reset rod 26 against the elasticity of the spring 29, the tip of the reset rod 26 facing the concave portion 25 of the valve body 22 pushes the valve body 22 against the pressure on the inlet 16 side. When the valve body 22 is pulled away from the valve port 20, the valve body 22 is returned to the open position due to the relationship between the weight of the valve body 22 and the fluid pressure acting on the valve body 22.

As described above, according to the present invention, the device does not operate unless the vibration exceeds a predetermined level of strength and continues for a certain period of time, such as during an earthquake, so there is no need to worry about troubles due to malfunction.

Moreover, it is convenient to handle because it has little to do with levelness in terms of operation.

Furthermore, the structure is extremely simple, consisting of a container with an inverted conical tapered inner surface and a ball housed in the container in a free state, so there is no risk of breakdown and it can be widely used for general household use. , a practically excellent vibration sensing mechanism can be obtained.

[Brief explanation of drawings]

1 and 2 show an electric vibration sensing mechanism according to the present invention, and FIG. 3 shows a cutoff valve using the present invention. 1 and 9 are containers, 2 and 11 are switches, 3 and 14 are contact parts,
4 is a spring, 5 is a seat plate, 6, 10 are balls, 7, 12 are nuts, 8, 13 are terminals, 15 is a main body, 16 is an inlet, 11 is an outlet, 20 is a valve port, 21 is an empty chamber, 22 is a valve body, 26 is a reset rod, and 21 is a ball.

Claims (1)

[Claims] 1 A sphere is housed in a container whose inner surface is tapered into an inverted conical shape, in a free state so that it rotates along the circumferential wall of the container due to vibrations and then rises, and a predetermined rising position of the nuclear sphere is set. A vibration sensing mechanism equipped with a means of detection.