JP3015485U - Vibration detector - Google Patents

Abstract

(57) [Summary] [Purpose] The purpose of the present invention is to provide a simple seismograph. [Structure] A simple seismograph includes vibration detection means and a circuit that lights a bulb and continues lighting after vibration detection. The vibration detector includes a holding surface horizontally arranged at the center for keeping the metal sphere stationary, a metal sphere placed on the holding surface, and a metal sphere that comes into contact with the metal sphere when it rolls due to vibration. And a conductive contact piece spaced apart from each other.

Description

[Detailed description of the device]

The present invention relates to a device for detecting vibration such as an earthquake. If an earthquake occurs during a person's sleep, they will not notice it, so it is convenient to have a device that informs of the earthquake for various reasons.

In addition, even if the seismic intensity of an earthquake is announced, even if the seismic intensity is the same, the actual shaking varies depending on the terrain, etc., and if there is a simple device that informs whether the shaking exceeds a certain magnitude, it is necessary. It is easy to determine whether or not an inspection should be performed, and it is not necessary to install a seismometer, which is a complicated and delicate device.

[0003]

[Prior art]

 Vibration detectors that operate when the seismic intensity exceeds a certain level are used, for example, for stopping trains.

On the other hand, what is known as a seismograph includes a vertical pendulum type, a horizontal pendulum type, an inverted pendulum type, a vertical seismometer type, a universal type, and the like. , Etc. (for example, the Towson seismograph of Anderson Wood) are known. There are also acceleration seismographs such as piezo electric seismometers.

The relationship between the movement of the sphere in the concave spherical tray and the stability is described in page 60 by Chuo Bunkonsha, “Earthquake” written by Kiyoo Wadata.

[Problems to be solved by the device]

A seismometer generally requires a pedestal, a pillar, a pendulum, and a spring, and is structurally delicate, so that it lacks in simplicity. On the other hand, it is difficult for a sphere in a concave spherical tray to record vibrations by itself.

[Means for solving the problem]

The inventor simply covers the ball in the dish or tray and uses a suitable circuit to connect the ball between the dish and the lid by rolling the ball to detect vibration and display the lighting of the result. We have found that doing this can be done very easily, and completed the present invention.

That is, according to the present invention, a holding surface horizontally arranged for keeping a metal ball in a stationary state in the center, a metal ball placed on the holding surface, and a metal ball when the metal ball rolls due to vibration An electrically conductive contact piece which is disposed so as to be able to contact the metal ball and is separated from each other, and at the contact position between the metal ball and the contact piece, the contact piece and the metal ball form a conductive path. , Vibration detection means,

When the vibration detecting means forms the conductive path, it is connected to the contact piece and the conductive portion of the substantially horizontal surface, which makes it possible to continue lighting of the lighting means until resetting thereafter. Circuit, including a vibration detector including.

[0010] Preferably, one of the contact pieces is the holding surface itself to be horizontally arranged and is made of a metal dish, and the other contact piece is made of a metal lid, and the dish and the dish are The edge with the lid is separated by an insulator.

The circuit may include an optical semiconductor (cds) whose resistance value becomes smaller when light is applied, and the brightness is detected by the optical semiconductor (cds). It is possible not to turn on the lighting means.

[0012]

【Example】

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

FIG. 1 shows the vibration detecting means 1 in cross section. The metal balls 5 are housed in the upper half of the insulating case A and the lower half B of the insulating case, and face the lid-like body 3 separated by the insulating packing 3 on the dish-like body 2. When the metal sphere 5 is moved to the edge due to vibration, the metal sphere 5 connects the dish 2 and the lid 3 so that an electric current can flow between the electrode A and the electrode B. .

By adjusting the weight of the metal sphere, the diameter of the dish, and the inclination of the peripheral portion of the dish 2, no matter how much vibration occurs, the electrode A and the electrode B are separated from each other. You can decide whether to allow the current to flow. By artificially inducing an earthquake and testing, it is easy to determine such factors.

FIG. 2 shows a specific example of a circuit in which no electric current initially flows through the light bulb, but once the electric current flows between the electrode A and the electrode B, the electric current continues to flow through the light bulb until reset. If voltage is applied to each other for an instant, the thyristor becomes conductive and current continues to flow through the bulb. When you press the reset switch, you can turn off the light bulb that is lit, and it will go back to the standby state again to detect vibration.

When the LED 14 is off, the voltage of the battery 15 is insufficient, so the LED 14 can tell the necessity of battery replacement. Replace the bulb 12 if the LED 14 does not light up even after replacing with a new battery.

FIG. 3 is a circuit similar to that of FIG. 2, but includes a photo-semiconductor (cds) 16 in the circuit and utilizes the fact that the resistance value becomes small when light strikes the photo-semiconductor 16. A specific example of a circuit in which the lighting means 12 in the circuit is not turned on when it is detected and the room is bright will be shown. In a bright room, the resistance value of the opto-semiconductor 16 becomes small, the transistor 17 is in the normal state, and the voltage from the vibration sensor is not applied to the G (gate) of the SCR 18, so the SCR cannot be in the normal state and the bulb is not light.

[0018]

[Effect of the present invention]

 Since the structure of vibration detection is simple, it is possible to detect seismic vibration with an economical, sturdy, compact, and simple device. In particular, since the metal sphere can be made as small as possible, the vibration detector can be made very small. It is also possible to determine seismic intensity using multiple vibration detectors with different sensitivities.

[0019]

[Brief description of drawings]

FIG. 1 is a sectional view of a vibration detecting means of the present invention.

FIG. 2 is a circuit diagram of a circuit connected to the vibration detecting means.

FIG. 3 is a circuit diagram of a circuit that is connected to a vibration detecting unit, in which an optical semiconductor is included in the circuit and a light bulb is not turned on when it is bright.

Claims (3)

[Scope of utility model registration request] 1. A holding surface horizontally arranged to keep the metal ball stationary at the center, a metal ball placed on the holding surface, and a metal ball that comes into contact with the metal ball when it rolls due to vibration. And a conductive contact piece which is arranged so as to be separated from each other, and at a contact position between the metal ball and the contact piece,
Vibration detecting means for forming a conductive path by the contact piece and the metal ball, and the contact for sustaining the lighting of the lighting means until the resetting after the vibration detecting means forms the conductive path. A vibration detector including a circuit connected to the strip and the conductive portion of the substantially horizontal surface. 2. One of the contact pieces is the holding surface itself to be horizontally arranged and is made of a metal dish, and the other contact piece is made of a metal lid, and the dish and the lid are provided. The vibration detector according to claim 1, wherein an edge of the vibration detector is separated by an insulator. 3. The vibration detector according to claim 1 or 2, wherein the brightness is detected by an optical semiconductor (cds), and when the room is bright, the lighting means in the circuit is not turned on.