JPH08315274A - Earthquake detecting alarm - Google Patents

Abstract

PURPOSE: To provide a compact earthquake detecting alarm in which can have the informing seismic intencity can be optionally set and which can surely detect a shake of an earthquake larger than the set the informing seismic intencity and inform of it. CONSTITUTION: One conductor of the alarm 5 is connected to a ring member 2 having a good conductive ring 2A held horizontally and made stationary at a specified position and the other conductor of the alarm 5 is connected to the side of the suspension loop 3A of a conductor wire material arranged above the ring member 2, and a loop 4A formed at the upper end of a detection stylus 4 formed out of a conductive wire material is engaged with the suspension loop 3A and the detection stylus 4 is drooped at the center position of the ring 2A of the said ring member 2. An earthquake detection part is composed of the detection stylus 4, suspension loop 3A, and ring member 2 and when the detection stylus 4 abuts on the ring 2A of the ring member 2 owing to a swing of the detection stylus 4 caused by an earthquake, the alarm 5 is fed with electricity to generate an alarm sound.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an earthquake detection alarm device, and more particularly, to a compact detector which is equipped with a detection unit which is convenient for accurately detecting a micro-earthquake in all directions, and which is sufficiently functioning to predict a large earthquake even in a general household. It relates to an earthquake detection alarm device.

[0002]

2. Description of the Related Art Every time a large earthquake occurs, it is reported that the prediction of the earthquake and the attitude toward the earthquake will be reported. However, in reality, it is extremely difficult to predict or predict a large earthquake, and many people are anxious. The reality is that we are living our daily lives.

Immediately before the occurrence of a large earthquake, it is said that there is some kind of foreshadowing, as reported in various newspapers and magazines. One of the foreknowledge is a few seconds to a dozen seconds of a large earthquake with a seismic intensity of 5 to 7. It is said that there are many cases where there is a tremor with a seismic intensity of about 2 to 3. Therefore, the occurrence of a shaking with a seismic intensity of about 2 to 3 such as this foretell is detected and notified to the sleeping person, and based on the notification, it is predicted that the next big earthquake will occur even for a short time of several seconds to several tens of seconds. Then, if you take evacuation measures such as opening the door, lying down under a table, etc., you can minimize human damage.

However, a so-called seismic alarm for general households which detects and notifies the occurrence of a shaking having a seismic intensity of about 2 to 3 has not been put into practical use in the past, and when the above-mentioned earthquake in advance is sleeping. Little is known about it, which is one of the causes of many human injuries.

[0005] Several compact devices for detecting an earthquake and reporting it with a buzzer have been proposed in the past, and a typical example thereof is Japanese Utility Model Laid-Open No. 63-105039. This indoor vibration sensor disclosed in Japanese Utility Model Laid-Open No. 63-105039 has an iron pendulum 11 connected via a conductive indicator rod 12 above a supporting sphere 14 held at a fixed position and at the same time, An iron pendulum 18 is suspended by a flexible conductive member below, and the donut type magnetic bodies 10 and 16 are provided around the upper and lower iron pendulums 11 and 18, and the iron pendulum is normally used.
Set 11 and 18 so that they are located at the center where the magnetic attraction forces of the donut-shaped magnetic bodies 10 and 16 are balanced, and the vibration causes the iron pendulums 11 and 18 to sway and become unbalanced. When 11 and 18 are adsorbed on the donut type magnetic bodies 10 and 16, electricity is supplied and a buzzer sounds to notify the occurrence of an earthquake.

[0006]

However, the vibration sensor having the above-mentioned structure has an advantage that it can sensitively detect and notify vibrations in the vertical and horizontal directions. The vibration detecting means that depends on the balance of the magnetic field in the space with the magnetic body has a very narrow magnetic field balance area.In particular, in the iron pendulum 18 and the donut type magnetic body 16 that detect horizontal vibrations, Iron pendulum 18
Even if the sway is slightly shaken, the balance of the magnetic field is lost and the iron pendulum 18 is adsorbed to the donut-shaped magnetic body 16 side, and the buzzer sounds even if a slight shake other than the earthquake occurs. Moreover, if the iron pendulum 18 is attracted to the donut-shaped magnetic body 16 side due to such notification-free noise vibration or the detection of an earthquake, the iron pendulum 18 will not be naturally released from the attraction even if the iron pendulum 18 does not shake and is released. In addition to requiring the string 20 to restore the pendulum position, the work of resetting the iron pendulum 18 to a narrow magnetic field balance space becomes extremely complicated.

The present invention provides an earthquake alarm device which does not have the above-mentioned inconvenience, can set the magnitude of the alarm seismic intensity arbitrarily, and has a simple structure and a compact size, which is suitable for general household use.

SUMMARY OF THE INVENTION According to the present invention, a vibration detecting section is composed of a vertically movable conductive ring and a conductive wire suspended in the ring so that an earthquake occurs. The above problem is solved by generating a warning sound of a bell or a buzzer when the conductive wire swings and comes into contact with the conductive ring.

That is, in the earthquake detection alarm of the present invention, a ring member having a wire having excellent conductivity and having a perfect circle with an inner diameter of 6 to 10 mm is mounted on the side surface of the main body case with the ring being horizontal. One conductive wire terminal of the alarm device installed in the main body case is connected to this ring member, and a suspending member in which a loop is formed by a wire having excellent conductivity is arranged above this ring member. The other conductive wire terminal of the alarm device is connected to the suspension member, and the diameter of the conductive wire terminal is 0.6 to 1.2 mm and the length is 50 to 100 mm, which is excellent in conductivity.
A loop of a detection needle having a loop formed at the upper end of the wire is engaged with the loop of the suspension member, and the detection needle is oscillated omnidirectionally at the center position of the ring of the ring member for detection. An earthquake detection circuit is formed by the needle, the suspending member and the ring member, and when the detection needle comes into contact with the ring of the ring member due to the swing of the detection needle, the alarm device is energized and the alarm device emits a warning sound. It is characterized by being configured as follows.

Further, according to the present invention, the structure is simple and compact so that the magnitude of the seismic intensity to be detected can be arbitrarily set.

As the conductive wire used for the above-mentioned ring member, suspension member and detecting needle, an aluminum wire may be used, but a copper wire having a large specific gravity is preferable, and particularly, a copper wire having a gold plated surface causes rust. It is preferable because it is possible to maintain good conductivity for a long period of time. The diameter of the wire is preferably 0.6 to 1.2 mm. If the diameter is smaller than this, the detecting needle has less swinging inertia and the sensitivity of the earthquake is deteriorated. If the diameter is 1.2 mm or more, the weight of the entire detecting needle becomes large and the shaking becomes dull.

The inner diameter of the ring of the ring member is preferably about 6 to 10 mm after various studies. If the inner diameter of the ring is smaller than this, it becomes difficult to set the perceived seismic intensity (sway range), and if the inner diameter of the ring exceeds 10 mm, it is not possible to detect a small earthquake.

If the radius of curvature of the loop that engages the suspending member and the detection needle is too small, the detection needle is less likely to swing in all directions. This causes the inconvenience of fluctuation.
The preferred radius of curvature of the loops of both engaging parts is 2-5 mm
It is a degree.

If the hanging length of the detection needle is short, the sway sensing becomes dull, and if it is long, the sway sensing accuracy is improved, but a large case is required, and a compact earthquake detection alarm cannot be obtained. Considering this point, the preferable hanging length of the detection needle is about 50 to 80 mm.

The means for mounting the ring member on the side surface of the main body case so as to be movable in the vertical direction is not particularly limited, and conventional techniques such as a tension spring system, a screw system or an elastic friction system may be applied. Good. If numerical values are displayed stepwise at intervals in the vertical direction on the surface of the case of the vertical movement operation part of the ring member, it can be used as a guide for the degree of seismic intensity detection. If it is set at the detection position, it is possible to detect and notify the occurrence of an earthquake with the set seismic intensity or higher. As the alarm used for this notification, for example, a well-known structure generally used for a bath water level alarm, pager, etc. may be made compact and applied.

[0015]

The function of the seismic detector is a ring member connected to one conductive wire terminal of the alarm device mounted in the main body case with the wheel standing still at a predetermined position, and the other conductive wire terminal of the alarm device. The loop of the suspension member is connected to the loop, and the loop of the upper end engages the loop of the detection needle to hang it at the center of the ring member.Therefore, the detection needle swings smoothly in all directions. The size of the earthquake to be detected can be set by selecting the position of the ring member. When an earthquake occurs, the detection needle can surely swing inside the ring member to abut against the inner circumference of the ring member, and by this abutment, the switch of the electric circuit is closed to energize the alarm device and activate the bell or bell. A buzzer sounds to notify that an earthquake of a set scale or more has occurred.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to the drawings showing the embodiments of the present invention, FIG. 1 is a perspective view showing the main part of an earthquake detection alarm device of the present invention, wherein 1 is a case and 2 is a ring member. 3 is a suspending member, 4 is a detection needle, and 5 is an alarm device equipped with an on / off switch 5. In the present embodiment, the ring member 2, the suspending member 3, and the conductive portion of the detection needle 4 have diameters. Has a thickness of 15 on the surface of a 0.9 mm copper wire.
A conductive wire material plated with μm of gold is used.

As shown in FIGS. 1 and 2, the ring member 2 is formed by forming a perfect circle ring 2A having an inner diameter D of 8 mm from the conductive wire and extending a part of the conductive wire to form a non-circular shape. It is formed by being fixed to the conductive plastic holding material 2B, and the end of the conductive wire is connected to one conductive wire terminal of the alarm device 5 mounted inside the main body case 1. And its holding material
A V-shaped knob piece 2C is continuously provided on the back side of 2B,
The knob 2C is inserted into the vertically extending slit 1A provided on the side surface of the case 1 from the inside to the outside, and the ring member 2 is mounted so as to be movable in the vertical direction.
It can be stopped at any position of the slit 1A by the elasticity of the opening direction of 2C.

The suspending member 3 includes a suspending member 3B having a loop 3A having a radius of curvature of about 2.5 mm formed of the conductive wire at its tip, and a supporting member holding the suspending member 3B. 3C and the loop 3A of the ring member 2
A supporting member 3C is arranged on the ceiling surface of the case 1 so as to be located on the center line of the wheel 2A, and is connected to the other conductive wire terminal of the alarm device 5 at the end of the suspending member 3B. Then, a loop 4A having a radius of curvature of about 3 mm is formed on the upper end of the loop 3A of the suspension member 3, and the detection needle 4 having a straight portion length of 60 mm.
Engages with its loop 4A and hangs freely in all directions at the center position of the ring 2A of the ring member 2. The detection needle 4, the hanging member 3 and the ring member 2 constitute an earthquake detector. In addition, by moving the ring member 2 in the vertical direction to change the position as shown in FIG. 3, the amplitude H of the detection needle 4 due to an earthquake can be arbitrarily selected.

Next, the operation of detecting and notifying an earthquake will be explained. In a normal state where there is no vibration, the detection needle 4 does not swing and stands still at the center position of the ring 2A of the ring member 2. When the occurrence occurs, the detection needle 4 starts to swing, and the occurrence of an earthquake is detected by the detection needle 4 contacting the inner circumference of the ring 2A of the ring member 2 at the position selected and set in advance. Then, as schematically shown in FIG. 4, the electric circuit that has been cut off by this contact is connected, and at the same time, the latch circuit incorporating the timer relay is operated to connect the electric circuit for a set time of the timer, for example, 20 seconds. Hold the state and activate the alarm transmission circuit, operate the notification circuit and ring the bell for a certain period of time,
It notifies that an earthquake of a set scale or more has occurred.

[0020]

As described above, in the seismic detection alarm device according to the present invention, the ring member 2 which is a wire having excellent conductivity and which has a perfect circular ring 2A having an inner diameter of 6 to 10 mm makes the ring 2A horizontal. One of the conductive wire terminals of the alarm device 5 mounted on the side surface of the main body case 1 so as to be movable in the vertical direction and mounted in the main body case is connected to the ring member 2 and is electrically conductive above the ring member 2. A suspending member 3 in which a loop 3A is formed by an excellent wire is arranged, and the other conductive wire terminal of the alarm device 5 is connected to the suspending member 3, and a diameter excellent in conductivity is 0.6 to 1.2 mm, length 50-100 m
The loop 4A of the detection needle 4 in which the loop 4A is formed on the upper end of the wire of m is engaged with the loop 3A of the hanging member 3 and the detection needle 4 is omnidirectional at the center position of the ring 2A of the ring member 2. An earthquake detection circuit is formed by the detection needle 4 and the hanging member 3 and the ring member 2 which are oscillated so that the detection needle 4 swings to move the detection needle 4 to the ring 2A of the ring member 2. When contacted, the alarm device 5 is energized so that the alarm device 5 emits a warning sound, so that the earthquake detection alarm device can be made compact. Then, the detection needle 4 hung by the loop engagement can be smoothly swung in all directions, and the detection needle 4 swings to come into contact with the inner circumference of the ring 2A of the ring member 2 so that an earthquake having a seismic intensity or higher is obtained. When it occurs, it can be surely notified.

Moreover, the magnitude of the earthquake to be detected can be set by arbitrarily selecting the position of the ring member 2 in the height direction. For example, the ring member 2 is set at the position [4] in FIG. In this case, a small earthquake can be detected and notified without fail, and resetting work is not required, so it can be used like an alarm clock in general household use. Helps reduce human damage caused by.

[Brief description of drawings]

FIG. 1 is a perspective view of essential parts showing an embodiment of an earthquake detection alarm device of the present invention.

FIG. 2 is a plan view illustrating a mounted state of the ring member of FIG.

FIG. 3 is an explanatory diagram showing the amplitude degree of the detection needle when the set position of the ring member is changed.

FIG. 4 is an explanatory view schematically showing a detection alarm circuit.

[Explanation of symbols]

 1. Case 2. Ring member 2A. Ring 3. Hanging member 3A. Loop 4. Detection needle 4A. Loop 5. Alarm

Claims (4)

[Claims] 1. An electrically conductive wire having an inner diameter of 6 to 10 m.
A ring member having a circle circle of m is attached to the side surface of the main body case with the ring horizontal, and one conductive wire terminal of the alarm device mounted in the main body case is connected to this ring member, A suspending member in which a loop is formed by a wire having excellent conductivity is arranged above the ring member, and the other conductive wire terminal of the alarm device is connected to the suspending member. Is 0.6 to 1.2 mm,
A loop of a detection needle having a loop formed at the upper end of a wire having a length of 50 to 100 mm is engaged with the loop of the hanging member, and the detection needle can be swung in all directions in the center position of the ring of the ring member. An earthquake detection circuit is formed by the detection needle, the suspending member, and the ring member, and when the detection needle comes into contact with the ring of the ring member due to the swing of the detection needle, the alarm device is energized to give an alarm. Earthquake detection alarm, characterized in that the instrument is configured to emit a warning sound. 2. A seismic detection alarm device according to claim 1, wherein a ring member having a ring of a perfect circle is mounted on a side surface of the main body case so as to be vertically movable. . 3. The earthquake detection alarm device according to claim 1, wherein a radius of curvature of an engaging portion between the loop of the suspension member and the loop of the detection needle is 2 to 5 mm. 4. The earthquake detection alarm device according to claim 1, wherein the ring member, the suspension member, and the detection needle are formed of a copper wire whose surface is gold-plated.