JP3066034U - Power circuit cutoff device - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To provide a power supply cut-off device for a power supply circuit and a method for automatically turning off a breaker device of a power supply in a disaster such as a large earthquake. A breaker device (10) mounted on a wall (14) and having an operation lever (10a) rotatable in both up and down directions for switching between energization and interruption of a power supply circuit, and an operation lever (10).
A long string body 22 having one end connected to the end of the string a, and the operation lever 10a being rotated from the upper side to the lower side when dropped and connected to the other end of the string body 22 to cut off the power supply circuit. A weight supporting member attached to the breaker device 10 or its periphery, having a weight 20 having a weight, and engaging means for engaging with the weight 20 and disengaging when the vibration is generated and causing the weight 20 to drop. 16 is provided.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to an energization interrupting device for a power supply circuit, and more particularly to an energization interrupting device and method for interrupting energization of a power supply circuit connected to an external power source of a building, a structure, a house, or the like when an earthquake or other vibration occurs.

[0002]

[Prior art]

 Generally, in homes, offices, factories, and other buildings, structures, houses, and the like, electric power distributed from a power company is used as a power source for lighting fixtures such as fluorescent lights, and various other electric products and machines. . When this power is used, it is done by inserting plugs into outlets provided in various places in the room. A breaker between such an outlet and the above-mentioned power supply line (power supply) distributed from the outside automatically cuts off the supply of electricity to a power supply circuit connected to the outlet when a predetermined operating current is exceeded. A device is provided.

[0003] In such a breaker device, as shown in Fig. 12, by turning an operation lever 10a of the breaker device 10 up and down, the power can be switched between ON and OFF. ing. That is, when the operation lever 10a is turned upward, the power is turned on (power is supplied to the power supply circuit connected to the outlet), and when the operation lever 10a is turned downward, the power is turned off (when the power supply connected to the outlet is turned off). Usually, the power supply to the road is cut off).

[0004]

[Problems to be solved by the invention]

 However, such a power breaker device 10 has a structure in which the power cannot be turned on / off unless a person manually raises or lowers the operation lever 10a. For this reason, when it is necessary to escape quickly in the event of a disaster such as a large earthquake, few people know that it is better to lower the operation lever 10a of the breaker device 10, or few people notice that. Or, even if someone notices that, in such a case, there is often no room for the operation. As a result, after the earthquake subsided, the power company resumed the power distribution that was temporarily suspended during the earthquake, so that in an unoccupied house, for example, a heater for a tropical fish tank with broken glass and no water, There was a problem that the iron, electric heater, etc. were overheated, which easily caused a secondary disaster of fire. In particular, electric sparks at the start of washing machines and refrigerators when restarting power distribution often ignite the leaked combustible gas, causing a gas explosion and leading to fire. This is a very serious problem in this respect.

In view of the above problems, the present invention provides a power supply that can automatically turn off the power supply circuit breaker device in the event of a disaster such as a large earthquake and automatically cut off the power supply to the power supply circuit. An object of the present invention is to provide a circuit energization interrupting device and a method thereof.

[0006]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, a power supply interrupting device for a power supply circuit according to the present invention is provided with a breaker device which is mounted on a wall surface and has an operation lever rotatable in both up and down directions for switching between energization and interruption of the power supply circuit, A long string body having one end connected to the end of the lever, and the operation lever being rotated from the upper side to the lower side when dropped and connected to the other end of the string body to cut off the power supply circuit. A weight body having a weight, and a weight support member having engagement means for engaging with the weight body and disengaging the weight body when the vibration is generated and causing the weight body to drop and attached to the breaker or the periphery thereof. It has a configuration that includes.

[0007] According to the power supply cutoff device of the power supply circuit having such a configuration, the weight that has been engaged with the engaging means of the weight supporting member is disengaged from the engaging means and drops when vibration occurs. At this time, by turning the operation lever of the breaker device from the upper side to the lower side via the cord body by the weight of the weight body, the power supply circuit is automatically cut off. For this reason, in the event of a disaster such as a major earthquake, the power supply circuit breaker device can be automatically turned off to automatically cut off the power supply to the power supply circuit, thereby preventing the secondary disaster from occurring. it can.

[0008]

[Embodiment of the invention]

 Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 to FIG. 3 are views showing a power supply interrupting device and a method thereof according to a first embodiment of the present invention.

As shown in FIG. 1, a weight supporting member 16 having an L-shaped cross section is provided with a screw 18 (or an adhesive) on a portion of a wall 14 below a switchboard case 12 provided with a breaker device 10. It is fixed by. A hole 16a having a circular cross section of a predetermined diameter is formed in the horizontal plate portion of the weight supporting member 16 (see FIG. 3), and the upper end opening (engaging means) of the hole 16a is provided in the horizontal plate portion. A heavy weight 20 formed in a spherical shape is fitted and supported so as to close the opening.

A protrusion 20a having a hole is formed on the upper side of the weight body 20, and one end of a long cord 22 is passed through the hole of the projection 20a. It is connected to the projection 20a. The other end of the cord 22 is passed through a hole at the tip of the operation lever 10a of the breaker device 10 and is connected to the tip of the operation lever 10a. As shown in the figure, the string body 22 is slightly loosened and connected between the weight body 20 and the operation lever 10a.

According to the power cutoff device of the power supply circuit configured as described above, when vibration occurs due to a large earthquake or the like, the weight 20 vibrates, and the upper end opening of the hole 16a of the weight support member 16 that vibrates similarly. The fitting is released from the portion, and the weight body 20 falls in the direction of arrow B in FIG. Due to the weight of the dropped weight body 20, the cord body 22 rotates the operation lever 10a of the breaker device 10 from above to below (in the direction of arrow A in FIG. 2). The power supply circuit can be automatically cut off by switching from ON to OFF.

FIG. 4 is a diagram showing a power supply cutoff device for a power supply circuit according to a second embodiment of the present invention. In the first embodiment, the number of holes 16a is one as shown in FIG. 3, whereas in the second embodiment, the horizontal plate portion of the weight support member 23 has a diameter 3 in that holes 25, 26, and 27 having circular cross sections having different sizes are formed.

The smaller the diameter of the hole, the easier it is to disengage from the weight body 20 due to the small vibration. Therefore, for example, the hole 25 having the largest diameter has a diameter such that the engagement with the weight body 20 cannot be released unless the seismic intensity is 6 or more, and the hole 26 having the next largest diameter is engaged unless the seismic intensity is 4 or more. The hole 27 with the smallest diameter can be set to a diameter such that the engagement will not be released unless the seismic intensity is 3 or more. You can choose to engage.

The upper surfaces 25a, 26a, and 27a in which the respective holes are formed are formed in steps with different heights. This is because if the weight 20 is disengaged from the small-diameter hole and enters the adjacent larger-diameter hole, it is difficult to disengage the weight 20 from the hole. This is because consideration was taken so that holes were formed in the upper surface where the height was higher.

FIG. 5 is a diagram showing a power supply cutoff device for a power supply circuit according to a third embodiment of the present invention. In the first and second embodiments, the weight 20 has a simple spherical shape, whereas in the third embodiment, the weight 30 has a tapered projection at the bottom of the sphere. 30a is formed, and is different in that a root portion thicker than the tip of the projection 30a is fitted into the hole 29a of the weight supporting member 29. With such a configuration, even if the diameter of the hole 29a is small, it is possible to prevent the engagement with the weight body 30 from being easily released unless the vibration is large.

FIG. 6 is a diagram showing a power supply cut-off device for a power supply circuit according to a fourth embodiment of the present invention. In the third embodiment, the protrusion 30a is formed at the lower part of the weight 30. In the fourth embodiment, the recess 40a is formed at the lower part of the weight 40. The difference is that the concave portion 40a is fitted to the convex portion 43 projecting obliquely upward.

In this case, unlike the first to third embodiments, the weight supporting members 16 and 23 each having an L-shaped cross section are not used, and the protrusions at the lower end are used as shown in FIG. 43 uses a weight supporting member 46 bent in a J-shape. According to the fourth embodiment, the same effects as those of the first to third embodiments can be obtained.

In the above embodiment, the case where the weight supporting members 16, 23, and 46 are attached to the wall 14 has been described. However, the weight supporting members may be placed on the power distribution board case 12 (see FIG. 1) or horizontally. Alternatively, it may be mounted and mounted on the front surface or on the upper surface of an object around the switchboard case 12.

Further, in the first embodiment, the case where the weight body 20 is engaged with the upper end opening of the hole 16a has been described. However, as in the fifth embodiment of the present invention shown in FIG. Instead of the hole, the lower end opening of the hole may be engaged with the upper end opening of the concave portion 53 closed by the bottom 53a.

Also, as in a sixth embodiment of the present invention shown in FIG. 8, a concave portion 50 a is formed in the lower portion of the weight 50, and the concave portion 50 a is formed on the weight support member 56. You may make it fit with the convex part 56a which was done.

In the first embodiment, the case where the weight 20 is spherical and the hole 16a has a circular cross section has been described. However, the weight may have a shape other than a spherical shape. It may have a cross section of a shape other than a circle. For example, as in the seventh embodiment shown in FIG. 9, a spherical weight 20 is placed on a shallow dish-shaped recess 58a formed on the upper surface of a weight support member 58. May be engaged.

Further, as in the eighth embodiment shown in FIG. 10, a spherical weight 20 is provided inside a low-height annular convex portion 62 fixed to the upper surface of a weight support member 60. It may be placed on the upper surface of the weight supporting member 60. Alternatively, as in the ninth embodiment shown in FIG. 11, an inverted trapezoidal-shaped lower weight 64 having a flat bottom surface and a column member 66 having a flat top surface are mounted on the flat top surface 66a. May be engaged. In this case, the horizontal cross section of the weight 64 may be a circle, a polygon, or any shape.

The weight may be made of lead, iron, other metal, or any other material. Further, the weight is not limited to a solid, but may be a liquid or a plastic bag filled with a liquid.

In addition to the main circuit breaker device 10 that shuts off all power circuits in the building at once, the power distribution circuit case 12 includes a power circuit circuit for each room or each area. An individual breaker device is provided to cut off the power supply to the power supply. In each room or each area, there may be objects that need to be always turned on, such as a computer, for each breaker device other than the breaker device for such a room or area. In addition, the power cutoff device of the present invention can be attached.

[0025]

[Effect of the invention]

 As described above, according to the power supply interrupting device and method of the present invention, the weight engaged with the engaging means of the weight supporting member is disengaged from the engaging means when vibration occurs. At this time, the power of the power supply circuit is automatically cut off by rotating the breaker device operating lever from above to below via the cord due to the weight of the weight. I do. Therefore, in the event of a disaster such as a major earthquake, the power supply circuit breaker device can be automatically turned off to automatically cut off the power supply to the power supply circuit, and the secondary disaster can be prevented. In addition, it is possible to reliably prevent fires caused by gas explosions caused by ignition of particularly flammable gas.

[Brief description of the drawings]

FIG. 1 is a side view showing a power cutoff device of a power supply circuit according to a first embodiment of the present invention.

FIG. 2 is a side view showing the operation of the power cutoff device of the power supply circuit of FIG. 1;

FIG. 3 is a sectional view of the weight supporting member 16 shown in FIG.
FIG. 3 is a cross-sectional view taken along line I.

FIG. 4 is a view showing a weight support member 23 of the power cutoff device of the power supply circuit according to the second embodiment of the present invention;
4A is a side cross-sectional view of the weight supporting member 23, FIG. 4B is a cross-sectional view of the weight supporting member 23 in FIG. 4A taken along line BB, and FIG. weight supporting member 2 in b)
FIG. 3 is a top view of FIG.

FIG. 5 is a cross-sectional view illustrating a main part of a power cutoff device of a power supply circuit according to a third embodiment of the present invention.

FIG. 6 is a partial cross-sectional side view showing a power supply cutoff device for a power supply circuit according to a fourth embodiment of the present invention.

FIG. 7 is a cross-sectional view illustrating a main part of a power cutoff device of a power supply circuit according to a fifth embodiment of the present invention.

FIG. 8 is a partial cross-sectional side view showing a main part of a power cutoff device of a power supply circuit according to a sixth embodiment of the present invention.

FIG. 9 is a cross-sectional view illustrating a main part of a power cutoff device of a power supply circuit according to a seventh embodiment of the present invention.

FIG. 10 is a cross-sectional view illustrating a main part of a power cutoff device of a power supply circuit according to an eighth embodiment of the present invention.

FIG. 11 is a side view showing a main part of a power cutoff device of a power supply circuit according to a ninth embodiment of the present invention.

FIG. 12 is a side view showing a general breaker device 10;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Breaker apparatus 10a Operation lever 12 Switchboard case 14 Wall 16 Weight support member 16a hole 18 Screw 20 Weight 20a Projection 22 String 23 Weight support member 25,26,27 Hole 25a, 26a, 27a Top surface 30 Weight 30a Projection 40 weight body 40a recessed part 43 convex part 46 weight body supporting member 50 weight body 50a recessed part 53 concave part 53a bottom 56 weight body supporting member 56a convex part 58 weight body supporting member 58a concave part 60 weight body supporting member 62 convex part 64 weight body 66 column Member 66a Top surface

[Procedure amendment]

[Submission date] September 20, 1999 (1999.9.2)
0)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Name of device

[Correction method] Change

[Correction contents]

[Name of device] Power supply circuit cutoff device

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] Claim 4

[Correction method] Change

[Correction contents]

[Procedure amendment 3]

[Document name to be amended] Statement

[Correction target item name] Claim 7

[Correction method] Change

[Correction contents]

Claims (7)

[Utility model registration claims] 1. A breaker device mounted on a wall and having an operation lever rotatable in both up and down directions for switching between energization and de-energization of a power supply circuit, and a long cord body having one end connected to a tip of the operation lever. And a weight connected to the other end of the cord body and having a weight to turn the operation lever downward from above to cut off the power supply circuit when dropped, and to engage with the weight body to vibrate. And a weight support member attached to the breaker device or around the breaker device, which has an engagement means for causing the weight to drop when the engagement occurs. . 2. The weight member is formed in a spherical shape, and the engaging means is formed by a hole having a circular cross section opened in a horizontal plane of the weight member support member.
A power supply cut-off device for a power supply circuit according to claim 1. 3. The weight member is formed in a spherical shape, and the engaging means is formed by a concave portion having a circular cross section opened in a horizontal plane of the weight body support member and having a bottom. Item 2. A power supply cutoff device for a power supply circuit according to Item 1. 4. The power cutoff device and method for a power supply circuit according to claim 2, wherein a convex portion formed on the weight body is engaged with the hole or the concave portion. 5. The power cutoff device for a power supply circuit according to claim 1, wherein said engaging means is formed by a convex portion engaging with a concave portion formed in said weight body. 6. A lower surface of the weight body is formed in a plane, an upper surface of the engaging means is formed in a plane, and the weight body and the engaging means are engaged by planar contact with each other. The power supply interrupting device for a power supply circuit according to claim 1. 7. A weight body is engaged with an engagement means formed on a weight body support member, and the other end of a long string body having one end connected to the weight body is a tip of an operating lever of a breaker device. The weight body is disengaged from the engagement means and falls when vibration is generated. At this time, the weight of the weight body causes the operation lever to move downward from above through the cord body. A method for interrupting power supply to a power supply circuit, comprising turning off power to the power supply circuit.