WO2019135400A1

WO2019135400A1 - Earthquake-sensitive power source interruption device

Info

Publication number: WO2019135400A1
Application number: PCT/JP2018/048430
Authority: WO
Inventors: 村上　誠
Original assignee: 一般社団法人住環境創造研究所; 多摩岡産業株式会社
Priority date: 2018-01-05
Filing date: 2018-12-28
Publication date: 2019-07-11
Also published as: JP6734516B2; JP2019121510A

Abstract

Provided is an earthquake-sensitive power source interruption device which has a simple structure and is inexpensive, which can be easily installed without a professional, and which can reliably cause a pseudo earth leakage when vibrated at or above a certain level by an earthquake so as to activate an earth leakage interrupter. The earthquake-sensitive power source interruption device comprises: a first plate-shaped member (10) that is made of a conductive metal; a second plate-shaped member (20) that is made of a conductive metal and that is disposed above the first plate-shaped member (10) with a predetermined gap therebetween; a contact member (35) that is made of a conductive metal and that is disposed above the first plate-shaped member (10) and between the first plate-shaped member (10) and the second plate-shaped member (20); and a weight member (36) that is provided integrally with the contact member (35). When the weight member (36) swings due to an external vibration at or above a certain level, the contact member (35) contacts both the first plate-shaped member (10) and the second plate-shaped member (20), and thereby the first plate-shaped member (10) and the second plate-shaped member (20) become conductive.

Description

Vibration-sensitive power shut-off device

BACKGROUND OF THE INVENTION Field of the Invention The present invention relates to a seismic isolation apparatus capable of generating a pseudo-leakage due to vibration due to earthquake and activating an earth-leakage breaker in a distribution board to shut off a power supply.

As an electric fire prevention measure at the time of occurrence of an earthquake, conventionally, as shown, for example, in patent document 1, a weight drop ball type breaker breaker which operates a lever of a main power switch (power breaker) at a predetermined seismic intensity is known There is. However, this type of breaker breaker may not be able to be installed depending on the structure of the distribution board in which the main power switch is stored and the installation location. Moreover, there is a problem in that there is a lack of reliability as to whether or not the lever reliably operates at the time of the occurrence of an earthquake because the operation of the lever has an operational variation such as hardness.

In addition, as another device for preventing electrical fires when an earthquake occurs, a leak of the electrical safety device that is connected with the main power switch and shuts off all the power instantaneously when a leak occurs in the electrical wiring or electric appliance. Circuit breakers are generally installed. Further, there is known a distribution control panel and accessories that add a seismic function to an earth leakage circuit breaker to shut off the power supply in the event of an earthquake.

The device in which the seismic isolation function is added to the earth leakage breaker of the electrical safety device as described above has higher reliability of operation at the time of earthquake occurrence as compared with the weight drop ball type breaker interrupter described in Patent Document 1 it is conceivable that. However, because these devices use seismic sensors, switching circuits, etc., they are expensive, and because they require electrical work by professionals, installation costs increase, etc. It is the present condition that the spread is not progressing.

Unexamined-Japanese-Patent No. 2004-296421

The present invention has been made in view of the above-mentioned point, and its object is to simplify the structure, to be inexpensive, to be installed easily regardless of the profession, and to be sure with a predetermined vibration caused by earthquake or more. An object of the present invention is to provide a vibration isolation power supply interrupting device capable of causing a pseudo-earth-leakage and operating a leakage-circuit breaker.

In order to solve the above-mentioned subject, the vibration-sensing power supply cutoff device (1) concerning the present invention is specified above the 1st plate-like member (10) and the 1st plate-like member (10) which consist of conductive metals. A second plate-like member (20) made of a conductive metal provided with a gap between the first plate-like member (10) and the first plate-like member (10) and the first plate-like member (10) A conductive metal contact member (35) disposed between the two plate members (20) and a weight member (36) integrally provided with the contact member (35) When the weight member (36) swings due to the application of a predetermined vibration or more from the outside, the contact member (35) is the first plate member (10) and the second plate member (20 So that the first plate member (10) and the second plate member (20) are electrically connected. It is characterized in that form.

According to the seismic power source cutoff device of the present invention, the seismic vibration body consisting of the contact member and the weight member is stable (static) at normal times, but an earthquake occurs and its vibration is a predetermined seismic intensity When the vibration vibration body senses shaking due to earthquake and the weight member swings, the contact member tilts and contacts both the first and second plate members, It conducts. As a result, it is possible to cause a pseudo-leakage by shaking of a predetermined seismic intensity, and to operate the earth leakage breaker to shut off the power supply. Therefore, it is possible to construct a simple and inexpensive seismic power shutoff device.

There are pitching P waves that occur initially and subsequent rolling S waves that occur due to earthquakes, but the seismic vibration vibrators provided in the seismic power supply cutoff device of the present invention have these pitching P waves and rolling S waves Can be configured to operate for both swings. Therefore, it is possible to operate the earth leakage circuit breaker by causing a pseudo-electric leakage even for any vibration of the pitching P wave and the rolling S wave. Thereby, the electric fire after the occurrence of the earthquake can be more reliably prevented, and the power failure fire at the time of reenergization can also be more reliably prevented.

As described above, according to the seismic power supply cutoff device of the present invention, the seismic vibration body that vibrates when an earthquake having a predetermined seismic intensity or more that is determined to be dangerous occurs between the ground terminal and the ground terminal in the electric circuit. It is possible to cause a pseudo-leakage and operate the earth leakage breaker in the distribution board to shut off all the power in the building. As a result, it is possible to prevent in advance the fire that occurs due to the occurrence of a fire due to damage to electrical wiring or electrical equipment that causes a fire, or restoration due to re-transmission after an earthquake.

Further, in the seismic power supply cutoff device according to the present invention, the contact member (35) and the weight member (36) are integrally connected by a rod-like connection member (37), and the first plate-like member ( 10) is formed with a through portion (11) through which the connecting member (37) penetrates, and the contact member (35) is a portion of the through portion (11) of the first plate member (10) The weight member (36) may be supported in a state of being suspended downward from the contact member (35) via the connection member (37).

According to this configuration, the weight member or the vibration-sensitive vibrating body can be rocked easily and reliably by the application of the predetermined vibration or more from the outside. It can be operated reliably.

Further, in the seismic power supply cutoff device of the present invention, the first plate member (10) and the second plate member (20) are provided with fixing screws (12, 22) fixed to the base member (5). Mounting holes (13, 23) for mounting the at least one of the mounting holes (13) of the first plate-like member (10) and the mounting holes (23) of the second plate-like member (20). May be formed in an elongated hole shape extending in the vertical direction.

According to this configuration, by adjusting the attachment position of the fixing screw for fixing the first plate member and the second plate member with respect to the mounting holes of the first plate member and the second plate member The interval can be adjusted. Therefore, it is possible to easily set the size (seismic intensity) of the earthquake that operates the seismic power supply cutoff device to a desired size.

Further, in the seismic power supply cutoff device according to the present invention, the contact member (35) is attached to the lower surface of the contact plate member (31) made of conductive metal and the lower surface of the contact plate member (31). It may be configured to include a cylindrical pedestal member (32) placed on the first plate member (10).

According to this configuration, the swing of the weight member can be adjusted by adjusting the outer dimension of the base member. Therefore, it is possible to easily set the size (seismic intensity) of the shaking of the earthquake operated by the seismic power supply cutoff device to a desired size.

Further, in the vibration-sensing power supply shut-off device according to the present invention, any one of the first plate-like member (10) and the second plate-like member (20) is used as the ungrounded terminal (142) of the outlet (130). The first connection portion (42) to be electrically connected, and the other one of the first plate-like member (10) and the second plate-like member (20) are connected to the grounded ground terminal (131) 2 connection part (50) may be provided.

In addition, the vibration isolation power supply shut-off device (1) includes a plug (40) for electrically connecting to the outlet (130), and the plug of the plug-in terminal on the ground side of the plug (40) is plugged The blade (41) is made of an insulating material, and the blade (42) of the non-ground side plug-in terminal is made of a conductive material, and the non-ground side plug-in terminal is The blade (42) may be a first connection (42).

Further, in the vibration-sensing power supply shut-off device according to the present invention, the blade (41) of the plug-in terminal on the ground side of the plug-in plug (40) and the blade (42) of the plug-in terminal on the non-ground side are , May be formed in different dimensions.

The insertion holes into which the blades of the grounded outlet are inserted have different dimensions (width dimensions) from the non-grounded side and the ground side. Therefore, if the width dimension of the blade on the grounding side of the plug and the blade on the non-grounding side are different from each other as in the above configuration, when inserting the plug into the grounded outlet, It is possible to prevent reverse insertion of the blade of the insertion terminal on the side and the blade of the insertion terminal on the non-ground side.

Further, in the seismic power supply cutoff device according to the present invention, an electrical resistance is applied to the wiring between the first plate member (10) or the second plate member (20) and the first connection portion (50). (70) may be installed.

According to this configuration, when power is shut off by the earth leakage breaker due to the operation of the vibration isolation power shut-off device, when the electric power is restored by, for example, restoring the earth leakage breaker, the ungrounded side pole terminal of the outlet Thus, it is possible to prevent a large current from flowing to the side of the seismic power supply cutoff device through the wiring. Therefore, when the power is restored, it is possible to prevent the occurrence of sparks from the plug and the components of the shock absorbing power shutoff device.

According to the present invention, it is possible to inexpensively provide a seismic power supply shutoff device which has a simple structure and can operate the earth leakage circuit breaker to shut off the power supply due to a predetermined vibration or more at the time of an earthquake.

It is a figure which shows the structure of the vibration-sensing power supply cutoff apparatus which concerns on one Embodiment of this invention. It is a general | schematic circuit diagram which shows the structure of the electrical wiring in the building which attached the seismic-power-supply cutoff apparatus. It is a figure which shows the insertion plug with which a seismic-power-supply cutoff apparatus is equipped, and the outlet with an earth which attaches it. It is a figure explaining the case where a seismic power source cutoff device operates by the pitching by an earthquake. It is a figure explaining the case where a seismic power source cutoff device operates by rolling by earthquake.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is a view showing an internal structure of a seismic isolation apparatus 1 according to an embodiment of the present invention, FIG. 1A is a front view, FIG. 1B is a plan view, and FIG. 1C is a side view. FIG. 2 is a schematic circuit diagram showing the configuration of the electrical wiring in the building to which the vibration sensing power shutoff device 1 is attached. FIG. 3 is a view showing an insertion plug 40 provided in the vibration-sensing power supply shutoff device 1 and a grounded power outlet 130 to which the insertion plug 40 is attached.

As shown in FIG. 1, the main body 2 of the vibration isolation power shut-off device 1 is a mounting metal plate (first plate member: lower plate) 10 made of a conductive metal flat plate and a mounting metal plate 10. The conductive metal plate (second plate-like member: upper plate) 20 consisting of a conductive metal flat plate disposed in parallel with a predetermined gap above it and the upper surface of the mounting metal plate 10 A contact member 35 disposed between the mounting metal plate 10 and the current-carrying metal plate 20 (upper and lower gaps) and a weight member 36 integrally provided with the contact member 35 There is.

The mounting metal plate 10 and the current-carrying metal plate 20 are respectively fixed to the front surface of a mounting plate (base member) 5 provided in the main body 2 of the vibration isolation power supply shutoff device 1 by fastening

screws

12 and 22. Here, mounting

holes

13 and 23 for mounting the

screws

12 and 22 are formed in the mounting metal plate 10 and the current-carrying metal plate 20. And the attachment hole 23 of the metal plate 20 for electricity supply is formed in the elongate hole shape extended in an up-down direction. According to this configuration, the distance between the mounting metal plate 10 and the current-carrying metal plate 20 can be adjusted by adjusting the mounting position of the screw 22 for fixing the current-carrying metal plate 20 to the mounting hole 23. . Therefore, it becomes easy to set the magnitude | size of the vibration in which the seismic power supply cutoff apparatus 1 operate | moves to a desired magnitude | size. In addition, although the case where the attachment hole 23 of the metal plate 20 for electricity_supply was formed in the long hole shape was shown here, the attachment hole 13 of the metal plate 10 for mounting is formed in the long hole shape besides this Alternatively, both the mounting hole 23 of the current-carrying metal plate 20 and the mounting hole 13 of the mounting metal plate 10 may be formed in a long hole shape.

Further, as the mounting plate 5 is fixed to the wall surface W in the building by fastening the screw 7, as shown in FIG. 3, the main body 2 of the seismic power supply cutoff device 1 is the wall surface W in the building. It is fixed to a wall surface W in the vicinity of the grounded outlet 130. In addition, the fixation to the wall surface W of the main body part 2 of the vibration-sensing power supply cutoff device 1 may be pasting fixation with a double-sided tape other than the fastening of the screw 7 or the like.

The contact member 35 is a metal circular flat plate-like contact metal plate 31 and a cylindrical pedestal member 32 attached to the lower surface of the contact metal plate 31 and mounted on the upper surface of the mounting metal plate 10. It consists of Furthermore, the base member 32 and the weight member 36 of the contact member 35 are integrally connected by the rod-like connection member 37. The connecting member 37 can be constituted by, for example, a screw shaft or the like, and can be screwed to and attached to the base member 32 or the weight member 36. The vibration / vibration body 30 is constituted by the contact members 35 (contact metal plate 31 and base member 32), the connection member 37 and the weight member 36 described above. A circular through hole (penetration portion) 11 through which the connecting member 37 penetrates is formed in the mounting metal plate 10, and the contact member 35 (the base member 32) is a penetrating portion in the upper surface of the mounting metal plate 10. It is placed around 11 The inner diameter of through hole 11 is set to be slightly larger than the diameter (thickness) of connecting member 37, and a gap is formed between the inner periphery of through hole 11 and the outer periphery of connecting member 37. There is. Thereby, swinging of the connection member 37 and the weight member 36 (the vibration sensing and vibrating body 30) is possible. The weight member 36 is supported in a state of being suspended downward from the contact member 35 (the base member 32) via the connection member 37.

Here, the degree of swinging of the weight member 36 is arbitrarily adjusted by adjusting the outer dimensions (diameter dimension (thickness) of the pedestal member 32 formed in a cylindrical shape) of the pedestal member 32 and the shape of the bottom portion. be able to. Therefore, it becomes easy to set the magnitude | size of the vibration which operates the vibration-sensing power supply cutoff apparatus 1 to a desired magnitude | size. That is, in the vibration-sensitive power supply cutoff device 1 of the present embodiment, the vibration-sensitive power supply cutoff device is adjusted by adjusting the diameter of the pedestal member 32 and adjusting the distance between the mounting metal plate 10 and the energizing metal plate 20. It becomes possible to set the magnitude (vibration intensity) of movement at which 1 operates to any magnitude.

The material of the conductive metal constituting the metal plate for mounting 10, the metal plate for energization 20, the metal plate 31 for contact of the vibration / vibration body 30, the pedestal member 32, and the shaft member 37 is preferably iron or gunmetal. It is not particularly limited as long as it is a metal having conductivity. In addition, materials that do not generate rust that impairs the conductive performance, those with rust prevention surface treatment such as plating, etc., are less likely to deteriorate over time, and deformation or damage does not occur when earthquake vibration is applied. It is desirable to have strength.

On the other hand, the material of the weight member 36 of the vibration and vibration body 30 is not limited to the conductivity, and may be a nonconductive material. Further, the shape of the weight member is not limited to a cylindrical shape, and may be another shape such as a square shape or a spherical shape.

Next, the configuration of the electrical wiring in the building to which the vibration isolation power shutoff device 1 is attached will be described. As shown in FIG. 2, in a distribution board (distribution board) 110 installed in a building, one main breaker 111, a plurality of branch breakers 112, and a leakage breaker provided between the main breaker 111 and the branch breaker 112. (Earth leakage circuit breaker) 115 is disposed. The main circuit breaker 111 is a circuit breaker incorporating a contact that opens and closes an electric path and an electronic circuit (both not shown) that controls the opening and closing of the contact, and is connected to the power supply line 120. The branch breaker 112 is connected to the master breaker 111 via the wiring 113 and is connected to a plurality of load devices (not shown) via the outlet 130. The earth leakage breaker 115 is provided on the wiring 113 between the main breaker 111 and the branch breaker 112, and is configured to immediately shut off the power when a leakage on the downstream side is detected.

As shown in FIG. 3, the vibration-sensing power supply shut-off device 1 comprises the main body 2 of the above configuration, and the plug 40 and the earth plug 50 attached to the tips of the

wires

61 and 62 drawn from the main body 2. Have. The plug 40 is inserted into the grounded outlet 130, and the grounding plug 50 is attached to the grounded ground terminal 131 of the grounded outlet 130. Although illustration is omitted, if the outlet of the building is not a grounded outlet provided with a grounded grounding terminal, the grounding plug 50 of the vibration-sensing power shut-off device 1 may be connected to a separately installed grounding terminal. It may be good or grounded in other ways.

Further, as shown in FIG. 3, the blade 41 of the plug-in terminal on the ground side provided in the plug-in plug 40 for electrically connecting the vibration sensing power shut-off device 1 and the grounded plug 130 has electrical insulation. It is comprised with materials, such as resin (synthetic resin material) which has, and the blade 42 of the non-grounding side insertion terminal is comprised with materials, such as an electroconductive metal. The plug blade 41 of the plug-in terminal on the ground side may be made of a metal material and coated with an insulating paint on its surface, or an insulating sheet attached to its surface.

Then, the mounting metal plate 10 of the vibration-sensing power supply shut-off device 1 is connected to the non-grounding side pole terminal 142 of the grounded outlet 130 via the blade 42 of the non-grounding side plug-in terminal of the plug 40 The energizing metal plate 20 is connected to the grounding terminal 131 of the grounded outlet 130 via the grounding plug 50. Further, the blade 41 of the ground side plug terminal inserted into the ground side pole terminal (plug hole) 141 of the ground socket 130 is not electrically connected anywhere, and becomes a so-called dummy terminal. There is.

Further, the blade 41 of the plug-in terminal on the ground side and the blade 42 of the plug-in terminal on the non-ground side are formed to have different dimensions. More specifically, the dimensions of the blade 41 of the plug-in terminal on the ground side and the blade 42 of the plug-in terminal on the non-ground side are the dimensions of one plug-in hole 141 and the other plug-in 142 of the grounded outlet 130 respectively. It is formed in the size (width size) according to the size of. When inserting the insertion plug 40 into the grounded outlet 130, the length of the insertion hole of the grounded outlet 130 is different between the grounding hole 141 and the non-grounding insertion hole 142. It is possible to prevent reverse insertion of the blade 41 of the plug-in terminal on the ground side and the blade 42 of the plug-in terminal on the non-ground side. The reason why the shapes of the two insertion holes of the outlet are different from each other, not limited to the grounded outlet, is because it is determined by the product standard.

Further, as shown in FIG. 2, a resistor (electrical resistance) 70 is attached on the wiring 61 connected from the blade 42 of the non-grounded plug-in terminal in the plug-in plug 40 to the mounting metal plate 10. It is done. The resistor 70 is not grounded when the power is restored by, for example, restoring the short circuit breaker 115 after the power is interrupted by the short circuit breaker 115 due to the operation of the vibration sensing power shutoff device 1. This is to prevent a large current from flowing from the pole terminal 142 to the mounting metal plate 10 via the wiring 61. Thereby, when the power is restored, generation of sparks from each part of the vibration-sensing power supply cutoff device 1 can be avoided. Note that although the mounting position of the resistor 70 is not limited as long as it is on the wiring 61, it can be mounted in the insertion plug 40 as an example.

Next, the operation of the vibration-type power shutoff device 1 configured as described above will be described. FIG. 4 is a view for explaining the case where the vibration sensing power shut-off device 1 operates with pitching due to an earthquake, and FIG. 5 is a view for explaining the case where the vibration sensing power shut-off device 1 operates with rolling due to earthquake. As shown in these figures, in the case of the vibration-sensing power supply cutoff device 1, the vibration-sensitive vibrating body 30 swings even in the case where the main vibration is either pitching (Fig. 4) or rolling (Fig. 5). When any one of the contact metal plate 31, the base member 32, and the shaft member 38 abuts on both the placement metal plate 10 and the conduction metal plate 20, the placement metal plate 10 and the contact metal plate 31 can be conducted (energized). Thereby, when seismic vibration body 30 is swung by earthquake's pitch P wave or lateral wave S wave, metal plate 10 for placement of seismic vibration body 30 and metal plate 31 for contact come into contact and energization is performed. Can cause a false leak.

That is, although the vibration-sensitive vibrating body 30 is stable (stationary) in normal times, when an earthquake occurs and its shaking reaches a shake corresponding to a predetermined seismic intensity (as an example, a seismic intensity of about 5 is reached) When the seismic vibration body 30 senses pitching or rolling, or shaking in which the pitching and rolling are combined, it is possible to cause a pseudo leakage. As a result, the earth leakage breaker (earth leakage circuit breaker) 115 of the distribution board 110 can be operated to immediately shut off all the power in the building.

As explained above, according to the seismic isolation apparatus 1 of the present embodiment, the placement metal plate 10 made of conductive metal and the placement metal plate 10 are disposed with a predetermined gap above them. A conductive metal plate 20 made of a conductive metal, and a conductive metal placed on the mounting metal plate 10 and disposed between the mounting metal plate 10 and the conductive metal plate 20 Contact member 35 and a weight member 36 integrally provided with the contact member 35, and the weight of the contact member 35 is mounted by swinging the weight member 36 by the application of a predetermined vibration or more from the outside. The present invention is characterized in that the mounting metal plate 10 and the current-carrying metal plate 20 are electrically connected in contact with both the rest metal plate 10 and the current-carrying metal plate 20.

According to the vibration-sensing power supply cutoff device 1 of the present embodiment, although the vibration-sensitive vibrating body 30 composed of the contact member 35 and the weight member 36 is stable (stationary) at normal times, an earthquake occurs and the vibration thereof occurs. When the vibration reaches a predetermined seismic intensity, the vibration sensing body 30 senses a shake due to an earthquake and the weight member 36 swings, and the contact member 35 is inclined, and the mounting metal plate 10 and the energizing metal plate 20 And both are in contact. As a result, it is possible to cause a pseudo-leakage by shaking of a predetermined seismic intensity, and operate the leak breaker 115 to shut off the power supply. Therefore, it is possible to construct a simple and inexpensive seismic power shutoff device.

As described above, there are pitching P waves that occur initially and subsequent rolling S waves that occur due to earthquakes, but the vibration-sensitive vibrating body 30 provided in the seismic power supply cutoff device 1 has these pitching P waves Operates for both shakes of S and S. Therefore, it is possible to operate the leakage breaker 115 by causing a pseudo-leakage to any swing of the pitch P wave and the roll S wave. Thereby, the electric fire after the occurrence of the earthquake can be more reliably prevented, and the power failure fire at the time of reenergization can also be more reliably prevented.

As described above, the seismic power supply cutoff device 1 according to the present embodiment is a ground terminal on the ground side of the electric circuit by the seismic vibration body 30 that vibrates when an earthquake having a predetermined seismic intensity or more determined to be dangerous occurs. Between the power distribution board 110 and the power distribution board 110 to shut off all power in the building. As a result, it is possible to prevent in advance the fire that occurs due to the occurrence of a fire due to damage to electrical wiring or electrical equipment that causes a fire, or restoration due to re-transmission after an earthquake.

Further, in the vibration-sensing power supply shut-off device 1 of the present embodiment, the contact member 35 and the weight member 36 are integrally connected by the rod-like connection member 37, and the connection metal 37 is mounted on the mounting metal plate 10. A penetrating portion 11 penetrating is formed, the contact member 35 is placed around the penetrating portion 11 of the mounting metal plate 10, and the weight member 36 is a contact member 35 via the connecting member 37. It is supported in a state of being suspended downward from the

According to this configuration, the weight member 36 can be rocked easily and reliably by the application of a predetermined vibration or more from the outside, so that the seismic power supply cutoff device 1 is reliably operated by an earthquake of a predetermined vibration degree or more. It can be done.

Further, in the vibration-sensing power supply shutoff device 1 of the present embodiment, mounting holes for mounting fixing

screws

12 and 22 fixed to the mounting plate (base member) 5 to the mounting metal plate 10 and the energizing metal plate 20. 13, 23, the mounting hole 23 of the current-carrying metal plate 20 is formed in an elongated hole shape extending in the vertical direction.

According to this configuration, the distance between the mounting metal plate 10 and the current-carrying metal plate 20 is adjusted by adjusting the mounting position of the fixing screw 22 for fixing the current-carrying metal plate 20 to the mounting hole 23. be able to. Therefore, it is possible to easily set the size (seismic intensity) of the shaking of the earthquake in which the seismic power supply cutoff device 1 operates to a desired size.

Further, in the vibration-sensing power supply shut-off device 1 of the present embodiment, the contact member 35 is mounted on the lower surface of the contact metal plate 31 made of conductive metal and the lower surface of the contact metal plate 31. It is configured to include a cylindrical pedestal member 32 placed on top.

According to this configuration, the swing of the weight member 36 can be adjusted by adjusting the outer dimensions of the pedestal member 32. Therefore, it is possible to easily set the size (seismic intensity) of the shaking of the earthquake in which the seismic power supply cutoff device 1 operates to a desired size.

As mentioned above, although embodiment of this invention was described, this invention is not limited to the said embodiment, It is within the range of the claim, and the technical idea described in the specification and drawing. Variations are possible. For example, in the above embodiment, the case where the mounting metal plate 10 is connected to the blade 42 of the non-grounded plug-in terminal of the plug-in plug 40 and the conductive metal plate 20 is connected to the ground plug 50 has been described. However, instead of this, although not shown, the mounting metal plate 10 is connected to the ground plug 50, and the energizing metal plate 20 is connected to the blade 42 of the non-grounding side plug-in terminal of the plug-in plug 40. It may be connected.

Claims

A first plate member made of a conductive metal;
A second plate-like member made of a conductive metal disposed with a predetermined gap above the first plate-like member;
A contact member made of conductive metal placed on the first plate member and disposed between the first plate member and the second plate member;
And a weight member provided integrally with the contact member,
When the weight member swings due to the application of a predetermined vibration or more from the outside, the contact member contacts both the first plate member and the second plate member, and the first plate A seismic power supply cutoff device characterized in that the second member and the second plate member are electrically connected.
The contact member and the weight member are integrally connected by a rod-like connection member,
The first plate member has a through portion through which the connecting member passes, and the contact member is placed around the through portion of the first plate member.
The said weight member is supported in the state suspended downward from the said contact member via the said connection member, The seismic power supply cutoff apparatus of Claim 1 characterized by the above-mentioned.
The first plate-like member and the second plate-like member are provided with attachment holes for attaching fixing screws to be fixed to the base member,
The feeling according to claim 1 or 2, wherein at least one of the attachment hole of the first plate member and the attachment hole of the second plate member is formed in an elongated hole shape extending in the vertical direction. Vibration power shut-off device.
The contact member is formed of a conductive plate member made of a conductive metal and a columnar pedestal member attached to the lower surface of the contact plate member and mounted on the first plate member. The seismic power source shutoff device according to any one of claims 1 to 3, wherein
A first connection portion electrically connecting any one of the first plate member and the second plate member to a terminal on the non-ground side of the outlet;
The 2nd connection part which connects any one of the said 1st plate-like member and the said 2nd plate-like member to the earthing terminal earthed is provided, The 2nd connection part characterized by the above-mentioned. Vibration-sensitive power shutoff device as described.
The seismic power shut-off device comprises a plug for electrically connecting to the outlet,
The blade of the plug-in terminal on the ground side of the plug is made of an insulating material, and the blade of the plug-in terminal on the non-ground side is made of a conductive material,
The seismic power source shutoff device according to claim 5, wherein the blade of the non-grounded side plug-in terminal is a first connection portion.
The blade of the plug-in terminal on the ground side of the plug-in plug and the blade of the plug-in terminal on the non-ground side are formed to have different dimensions from each other. Seismic power shutoff device.
The electrical resistance is installed in the wiring between a said 1st plate-shaped member or a said 2nd plate-shaped member, and a said 1st connection part to any one of the Claims 5 thru | or 7 characterized by the above-mentioned. Vibration-sensitive power shutoff device as described.