JP3199168U - Current breaker for fire prevention - Google Patents

Abstract

An object of the present invention is to shut off a primary side and a secondary side only when a seismic breaker is activated by detecting a vibration of a predetermined intensity or more, and when a no-voltage breaker is activated by detecting no-voltage on the primary side. Provide a breaker for energizing fire prevention that is convenient for use in the event of a major earthquake or in daily life. A seismic sensor for detecting vibration, and a connection between a primary side (retraction side) and a secondary side (load side) is released when the seismic sensor detects a shake greater than a predetermined value. The seismic breaker 2 having the open / close switch 9, the voltage sensor 11 for detecting the voltage, and the open / close that opens the connection between the primary side and the secondary side when the voltage sensor 11 detects no voltage on the primary side The seismic breaker 2 and the non-voltage breaker 3 are connected in parallel between the primary side and the secondary side. [Selection] Figure 1

Description

  The present invention relates to an electrical fire prevention breaker.

  A circuit breaker for wiring (hereinafter simply referred to as “breaker”) is attached to a distribution board in a general home.

  The circuit breaker is equipped with a leakage current detection sensor that shuts down the electrical circuit when leakage current is detected to prevent a leakage accident, and a seismic sensor that senses vibrations, and shakes such as earthquake motion. There is a type in which an electrical circuit is cut off when an electric wave is detected to prevent a fire accident due to a fall of an electric device such as an electric heater. Patent Document 1 discloses a technology related to a breaker including an overcurrent detection sensor, a leakage current detection sensor, and a seismic sensor. In addition, when the power supply from the primary side stops and the breaker enters a no-voltage state (power failure state), the circuit breaker detects this and shuts off the electrical circuit. There is a type that prevents a fire accident (hereinafter referred to as “no-voltage breaker”).

  When the circuit breaker is activated and the electrical circuit is cut off, check the safety of the electrical equipment and the house, and then manually return the lever to the return position, and then close the electrical circuit again to close the circuit. It can be returned to the state.

  In the Great East Japan Earthquake, power outage damage occurred in a wide area over a long period of time, and many fire accidents occurred. According to Non-Patent Document 1, when a power outage is restored as a cause of fire, A total of 19 cases are reported that are considered to have caused a fire (including the cases where the cause of damage to electrical wiring and heating equipment is not affected by the earthquake). That is, the conventional breaker cannot be said to be sufficiently safe against the overturn of the electric heating apparatus due to the earthquake motion or the fire (electric current fire) due to the re-transmission at the time of power failure recovery.

  In the Great Hanshin-Awaji Earthquake, there is a report that about 60% of building fires whose cause of fire was identified were energized fires (Non-patent Document 2). Patent Document 2 aims to detect large-scale earthquakes related to physical life, and to maintain the electrical systems of living spaces such as ordinary homes and office buildings as usual in so-called daily earthquakes. A device for an earthquake breaker is disclosed.

JP-A-8-235998 Japanese Patent Laid-Open No. 11-306953

“Analysis of the causes of fire related to electricity in the Great East Japan Earthquake”, [Search May 29, 2015] Internet <http://www.meti.go.jp/committee/sankoushin/hoan/denryoku_anzen/denki_setsubi_wg/pdf /002_04_01.pdf> "What is a new assumption" electric fire "directly under the Tokyo metropolitan earthquake?" [Search May 29, 2015] Internet <http://www.nhk.or.jp/shutoken/bousai/detail/022.html>

  The main cause of the massive damage caused by the Great East Japan Earthquake was tsunami damage. According to the techniques disclosed in Patent Documents 1 and 2, by providing a seismic sensor, when a large-scale earthquake occurs, the shake is detected and the breaker operates. However, if a breaker is activated immediately after a large-scale earthquake occurs, electrical devices such as televisions and lighting equipment installed in the home cannot be used, and tsunami information and shelter information are obtained. In addition, the evacuation route is not known at night. If an earthquake occurs, it is not useful for evacuation and rescue operations to operate the breaker immediately.

  When a seismic sensor is attached to a switchboard in a general household, there is an inconvenience that a slight vibration or impact in daily life causes a malfunction and the seismic breaker operates. In addition, if the seismic breaker is used alone, a power failure will occur immediately when a shake is detected, causing problems such as failure to obtain tsunami information. On the other hand, when the non-voltage breaker is used alone, there is an inconvenience that the voltage drop due to lightning or the like causes an immediate power failure, and the non-voltage breaker operates unnecessarily.

  The present invention has been made in view of the above problems, and it is an object of the present invention to provide a breaker for preventing energization fire that is convenient for use in the event of a major earthquake or daily life.

  An electrical fire prevention breaker according to the present invention is an electrical fire prevention breaker connected between a primary side input terminal and a secondary side output terminal, and includes a seismic sensor that detects shaking, and the seismic sensor. Is a seismic breaker having an open / close switch that cuts off the electrical connection when a vibration of a predetermined value or more is detected, a voltage sensor that detects the voltage of the primary side input terminal, and the voltage sensor detects no voltage A non-voltage breaker with an on / off switch that sometimes cuts off the electrical connection, the seismic breaker and the no-voltage breaker connected in parallel between the primary side input terminal and the secondary side output terminal It is characterized by being.

  The current-carrying fire prevention breaker according to the present invention optionally includes a pilot lamp or sounding component that operates when a vibration of a predetermined value or more is detected by the seismic sensor, and the no-voltage breaker is You may make it provide the pilot lamp or sounding components which operate | move when the non-voltage of the said primary side input terminal is detected by the said voltage sensor.

  According to the breaker for energizing fire prevention of the present invention, it detects a swing exceeding a predetermined intensity and detects no voltage on the primary side, as in the case where power supply is stopped due to the occurrence of a large-scale earthquake or the like. Only in this case, energization between the primary side and the secondary side is interrupted. By adopting such a structure, even if a large-scale earthquake has occurred, if the power supply continues, it is necessary to continue the operation without manually returning the lever to the return position. You can use electrical equipment such as TVs and lighting equipment installed in the building, and you can get tsunami information and shelter information in a timely manner. It is also convenient for evacuation. In addition, when the power failure is restored after the work power failure, the power is immediately turned on, which is convenient.

It is explanatory drawing of the breaker for electricity fire prevention which is one embodiment of this invention.

  Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings. FIG. 1 is an explanatory diagram of a breaker for preventing energized fire according to an embodiment of the present invention. The current-carrying fire prevention breaker 1 includes a seismic breaker 2 and a no-voltage breaker 3.

  As shown in FIG. 1, the energization fire prevention breaker 1 is connected between a primary side input terminal 4 and a secondary side output terminal 5. The primary side input terminal 4 is connected to a primary side such as an outdoor commercial power source through a lead-in breaker 6. The lead-in breaker 6 is a so-called overcurrent breaker. When an overcurrent exceeding a specified value flows due to the simultaneous use of electrical equipment such as lighting equipment, electric heating equipment, and microwave oven, this is detected and the primary side ( Disconnect the electrical circuit between the lead-in side and the secondary side (load side). As the lead-in breaker 6, a conventionally used or known one can be used, and for example, a magnet switch can be used.

  The secondary output terminal 5 is connected to a secondary side such as an outlet (not shown) through a load breaker 7, and the outlet includes an outlet plug (equipment provided in an electric device such as a lighting device, an electric heating device, or a microwave oven). (Not shown) is inserted.

  The seismic breaker 2 includes a seismic sensor 8 as a vibration detection sensor for detecting a shake, and an open / close switch 9 that opens an electrical connection when the seismic sensor 8 detects a shake greater than a predetermined value. When the seismic sensor 8 detects a shake of a predetermined intensity (for example, seismic intensity 4) or more, the open / close switch 9 is actuated by the driving device 10 to shut off the electric circuit. As the seismic breaker 2, a conventionally used or known one can be used. For example, the seismic sensor 8 is an acceleration that transmits a signal to the driving device 10 when a vibration of a predetermined intensity or more is detected. A sensor can be used, and an electromagnetic solenoid that is driven by receiving a signal from the seismic sensor 8 can be used as the driving device 10, and when this electromagnetic solenoid is driven, the open / close switch 9 is opened to electrically It can be configured to release the connection. The open / close switch 9 in the open state can be returned to the connected state by a manual lever (not shown).

  The no-voltage breaker 3 includes a voltage sensor 11 that detects the voltage of the primary side input terminal 4, and an open / close switch 12 that opens an electrical connection when the voltage sensor 11 detects no voltage of the primary side input terminal 4. When no voltage at the primary side input terminal 4 is detected, the open / close switch 12 is actuated by the driving device 13 to cut off the electric circuit. As the no-voltage breaker 3, a conventionally used or known one can be used. For example, an electromagnetic solenoid that is driven when a signal from the no-voltage sensor 11 is received as the driving device 13 is used. When the voltage sensor 11 detects no voltage, a signal is transmitted to the driving device 13 and the electromagnetic solenoid is driven so that the open / close switch 12 is opened and the electrical connection is opened.

  The seismic breaker 2 and the non-voltage breaker 3 are connected in parallel to the primary side input terminal 4 and the secondary side output terminal 5, respectively. Since the seismic breaker 2 and the non-voltage breaker 3 are connected in parallel between the primary side and the secondary side, the power supply is stopped as in the case where the power supply is stopped due to the occurrence of a large-scale earthquake or the like. The electrical connection between the primary side and the secondary side is interrupted only when a swing of intensity or higher is detected and no primary voltage is detected. By adopting such a configuration, even if a large-scale earthquake occurs, if the power supply continues, it is not necessary to manually return the lever to the return position. Electric equipment such as a television set and lighting equipment installed in the inside can be used.

  Since the breaker 1 for preventing energization fire of the present invention is realized by a simple and clear structure in which the seismic breaker 2 and the non-voltage breaker 3 are connected in parallel, there is a risk of failure or malfunction. The seismic breaker and the non-voltage breaker that are generally used or known in the past can be used as they are, and they are an excellent and practical device.

  The seismic breaker 2 may be provided with a pilot lamp or a sounding part (none of which is shown) that is activated when a vibration of a predetermined value or more is detected by the seismic sensor 8. Further, the no-voltage breaker 3 may include a pilot lamp or a sounding component (none of which is shown) that operates when the voltage sensor 11 detects no-voltage at the primary side input terminal 4. For example, an electronic buzzer can be used as the sound producing component. As a result, when the seismic sensor 8 detects a vibration of a predetermined value or more, or when the voltage sensor 11 detects no voltage at the primary side input terminal, the pilot lamp lights up or flashes, Can emit a sound or a sound to warn the operation of the breaker to the outside.

  The present invention can be applied to a general household switchboard, an industrial switchboard, and the like as a breaker for preventing energized fire.

DESCRIPTION OF SYMBOLS 1 Breaker for prevention of energizing fire 2 Seismic breaker 3 Non-voltage breaker 4 Primary side input terminal 5 Secondary side output terminal 6 Pull-in breaker 7 Load breaker 8 Seismic sensor 9 Open / close switch 10 Drive device 11 Voltage sensor 12 Open / close switch 13 Drive device

Claims (2)

A breaker for energizing fire prevention connected between the primary side input terminal and the secondary side output terminal,
A seismic sensor that detects shaking, and a seismic breaker that includes an open / close switch that shuts off electrical connection when the seismic sensor detects a shake greater than or equal to a predetermined value;
A voltage sensor that detects the voltage of the primary side input terminal, and a non-voltage breaker that includes an open / close switch that disconnects electrical connection when the voltage sensor detects no voltage,
The seismic breaker and the non-voltage breaker are connected in parallel between the primary side input terminal and the secondary side output terminal. The seismic breaker includes a pilot lamp or a sounding part that operates when a vibration of a predetermined value or more is detected by the seismic sensor, and the no-voltage breaker detects no voltage at the primary side input terminal by the voltage sensor. The electric fire breaker according to claim 1, further comprising a pilot lamp or a sound generation component that operates when the operation is performed.

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