JP2009063404A - Seismic sensor capable of controlling sensitivity - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a seismic sensor capable of detecting vibration when the vibration is generated by an earthquake and the like and automatically activating connected instruments such as illuminating lights, radios, buzzers and the like, and in particular the seismic sensor capable of easily controlling the sensitivity. <P>SOLUTION: The seismic sensor capable of easily controlling the degree of the operating sensitivity is configured of a structure (a) by which the position of a plumb in a cylindrical container disposed on the upper part of the main body is moved up and down directions and a structure (b) by which, when the cylindrical container is released from the main body by the earthquake and a seesaw is tilted to the other side by loosing the balance, conductive parts fitted to the upper and lower parts of the seesaw are contacted and electric current is automatically conducted at the same time of the earthquake. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention is an earthquake sensor that can automatically detect the vibration when a vibration due to an earthquake, etc. occurs and can automatically operate a connected device such as an illumination lamp, radio, buzzer, etc. It relates to seismic sensors that can be adjusted to

  When a large-scale earthquake occurs at night, at bedtime, etc., it is necessary to first brighten the surroundings and obtain information on the radio. For this reason, many homes and facilities always have one of the following lighting devices. (1) a general flashlight, (2) an emergency light that is turned on when a lighting device attached to a special hanger on the wall is detached from the hanger (see, for example, Patent Document 1), (3) vibration caused by an earthquake An emergency product display device that automatically detects an emergency lamp and turns on an emergency light (see Patent Document 2).

However, the conventional automatic illumination lighting devices (2) and (3) have no function of easily adjusting the sensitivity of the vibration detection unit. For this reason, there is a drawback in that it operates only when the amplitude of the vibration due to the earthquake exceeds a fixed set value. Furthermore, the conventional automatic illumination lighting device has a drawback that the installation place is limited as a permanent device for disaster prevention measures in a general home.
Japanese Utility Model Publication No. 50-20582 Japanese Utility Model Publication No. 48-24374

  An object of the present invention is to provide a portable seismic sensor capable of easily adjusting the sensitivity of a vibration detection unit in view of the above-described conventional drawbacks.

  In order to achieve the above object, the present invention provides a structure (a) for moving the position of a weight in a cylindrical container installed in the upper part of the main body in the vertical direction and when the cylindrical container is detached from the main body due to an earthquake. An earthquake in which the seesaw is out of balance and tilted, and the conductors attached to the top and bottom of the seesaw come into contact and automatically energize as soon as the earthquake occurs. Configure the sensor.

As is clear from the above description, the present invention has the following effects.
(1) Sensitivity that the vibration detection unit of the sensor can easily operate by moving the position of a weight (for example, a small metal disk) in a cylindrical container installed on the upper part of the main body (seesaw) up and down. You can adjust the strength of. Therefore, it is possible to easily adjust the type of equipment operated by the sensor.

(2) With the structure of (1), the sensitivity of the vibration detection unit can be easily adjusted according to the user's request with respect to the type of device to be operated.

(3) Since it is the structure of said (1) and Claim 2, it becomes possible to incorporate a some earthquake sensor in the disaster prevention standing device from the advantage of small size and light weight. Therefore, it can be easily adjusted for each of the devices operated by the sensor.

(4) Because of the structure of (1) and claim 3, the sensitivity of the vibration detector can be adjusted easily by generating vibrations three-dimensionally in the vertical, horizontal, and longitudinal directions. The state of the cylindrical container at the time can be simulated.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a cross-sectional view of Embodiment 1 of the device of the present invention, showing the main structure of an earthquake sensor capable of adjusting sensitivity.

  By moving the position of the weight in the cylindrical container installed at the top of the main body in the vertical direction, it is possible to adjust the strength of the sensitivity that is activated by earthquake vibration. The internal structure of this seismic sensor can be easily observed from the outside, and anyone can easily try its functions, giving a sense of security to the daily life of the user.

When the amplitude of vibration exceeds a set value, the vibration can be detected and the lighting device can be automatically operated, and can be used without any trouble even in the event of a power failure. Since no power source (electricity, battery) is required when the seismic sensor is on standby, repair and parts replacement are not required until the expiration date of the battery of the device operated by the sensor. However, for safety reasons, it is better to perform periodic operation checks.

  FIG. 2 is a cross-sectional view of the second embodiment of the device of the present invention, showing the main structure of the vibration detection unit of the seismic sensor.

  In the cylindrical container of the vibration detection unit of the earthquake sensor, there are a plurality of metal disks as weights. The sensitivity of the operation increases when the position of the metal disk is moved from the lower part to the upper part. If you move one sheet, the sensitivity will be about 4 times, so it is about 16 times for 2 sheets, about 64 times for 3 sheets, about 256 times for 4 sheets, about 1024 times for 5 sheets. That's it. Even if the position of the metal disk is moved up and down, it feels like a completely different sensor depending on the position of the metal disk in the vibration detector, even though the weight of the entire cylindrical container is unchanged. It is done.

  FIG. 3 is a cross-sectional view of a third embodiment of the device of the present invention, showing the main structure of the seismic sensor sensitivity adjusting device.

  The sensitivity of the vibration detector can be adjusted manually by vibrating three-dimensionally in the up / down, left / right, and front / rear directions to easily simulate the state of the cylindrical container at the time of the earthquake. The vibration detection unit responds to any of rolls in the front / rear and left / right directions, vertical shakes in the up / down directions, or a mixed type thereof. Moreover, the sensitivity of detecting the vibration can be easily adjusted and confirmed by the sensitivity adjustment device of the seismic sensor.

  The present invention (earthquake sensor with adjustable sensitivity) is used as an operation sensor for earthquake countermeasure equipment in ordinary homes and public facilities. Major earthquake countermeasure equipment includes radios, televisions, lighting equipment, emergency guidance equipment, alarm equipment, and the like.

It is sectional drawing of the earthquake sensor which can adjust a sensitivity. It is sectional drawing of the vibration detection part of an earthquake sensor. It is sectional drawing of the sensitivity adjustment apparatus of an earthquake sensor.

Explanation of symbols

1 Cylindrical container (eg film case)
2 weights (for example, a small metal disk)
3 Sponge 4 Receptacle 5 Bolt 6 Drop-off prevention support 7 Thread 8 Base 9 Seesaw plate 10 Seesaw support 11 Metal weight 12 Copper net (upper: seesaw)
13 Copper net (bottom: pedestal)
14 Lead wire (top: seesaw)
15 Lead wire (bottom: pedestal)
16 fulcrum 17 force point 18 action point 19 spring

Claims (3)

  By moving the position of the weight (for example, a small metal disk) in the cylindrical container installed on the upper part of the main body (seesaw) up and down, it is possible to easily adjust the strength of the sensitivity that is activated by the vibration of the earthquake. Earthquake sensor that can do things.   When a cylindrical container is detached from the main body (seesaw) due to an earthquake, the seesaw loses its balance and tilts to the other side. At this time, a switch that can be energized automatically at the same time as the earthquake occurs when the conductors (for example, copper mesh) attached to the top and bottom of the seesaw contact.   Cylindrical container in the event of an earthquake can be easily done by manually oscillating the spring attached to the bottom of the saucer where the cylindrical container containing the weight is placed in three dimensions in the vertical, horizontal, and longitudinal directions. Sensitivity adjustment device that can simulate the state of the.

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