JP2004296421A - Breaker shut off device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a breaker shut off device, capable of being easily mounted to a distribution panel or wall part with a weight placing board in a horizontal state, preventing a weight from reaching to a floor surface even if the weight drops, and adjusting a seismic intensity for the weight placed on the weight placing board to drop. <P>SOLUTION: The breaker shut off device comprises the weight, a table part having a structure for causing the weight placed on the table part to drop at a predetermined seismic intensity, and a string type body for attaching to a tab of an earth leakage breaker, with other end connected to the weight. A level is attached to the table part. On a free end of the string type body, tab attaching means for attaching to the tab of the breaker is provided. On the table part, latch means for latching and stopping the tab attaching means when the weight drops is provided. The table part has the placing board for placing the weight, which can adjust the seismic intensity due to fall of the weight placed on the weight placing board. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a breaker breaker suitable for breaking a breaker such as an earth leakage breaker installed on a switchboard in the event of an earthquake.
[0002]
[Prior art]
It is still new to our memory that many human lives were lost in the 1995 Hanshin Earthquake, which was caused by a fire as a secondary disaster that occurred with the earthquake.
[0003]
It is known that one of the major causes of a fire caused by the earthquake is a short circuit caused by an electric leakage or a fall of an electric device. Therefore, various breaker cut-off devices for breaking a breaker in the event of an earthquake have been developed, but have not yet been put to practical use.
[0004]
Under such circumstances, the one disclosed in the following patent documents as being similar to the present invention is known.
[0005]
[Patent Document 1] Japanese Patent Application Laid-Open No. 8-287812 [Patent Document 2] Japanese Patent Application Laid-Open No. 9-180618 [Patent Document 3] Japanese Patent Application Laid-Open No. 10-12116 In each case, the weight, the base portion on which the weight is placed but the weight is dropped at a predetermined seismic intensity, and the other end attached to the knob of the earth leakage breaker are attached to the weight. It is composed of a string.
[0006]
[Problems to be solved by the invention]
However, it is difficult to mount the mounting table on which the weight is mounted at the time of installation, and it is difficult to mount the mounting table horizontally. If the mounting table is inclined, the weight easily falls and malfunctions occur. Not. In addition, in the case of retrofitting where the string is attached to the knob of the existing breaker, the string and the knob must be fixed like a temporary fixing, and when the weight falls, the weight and the string are There was an inconvenience that the knob dropped to the floor away.
[0007]
SUMMARY OF THE INVENTION It is an object of the present invention to provide a breaker shut-off device which can be easily mounted on a switchboard or a wall by setting a mounting table of a weight in a horizontal state, so that the weight does not fall to the floor even when the weight falls. To offer.
[0008]
A second object of the present invention is to provide a breaker shut-off device designed so that the falling seismic intensity of a weight placed on a mounting table can be adjusted.
[0009]
[Means for Solving the Problems]
In order to achieve the above-mentioned object, the present invention provides a weight, a pedestal having a structure on which the weight is placed but which is dropped at a predetermined seismic intensity, and another end attached to a knob of an earth leakage breaker. A string attached to the weight, and a level is attached to the base.
[0010]
In this case, according to the present invention, the weight is made of lead or iron, and the surface thereof can be coated with a resin coating of a non-conductive material.
[0011]
The present invention further provides a knob attaching means for attaching to a knob of a breaker on a free end side of the string-like object, and the base portion usually passes through the string-like object when the weight falls, and the knob attaches to the breaker. Locking means for locking the means can be provided.
[0012]
Further, in the case where the cord and / or the knob attaching means are made of a conductive material, the surface thereof is coated with a resin of a non-conductive material.
[0013]
According to the present invention, the base can be provided with an adhesive member for attaching it to a switchboard or a wall to which the switchboard is attached.
[0014]
According to the present invention, the knob mounting means has a box shape so that a knob can be accommodated therein, and a leaf spring can be optionally attached to handle the size of the knob.
[0015]
The present invention also provides a weight, a pedestal having a structure on which the weight is placed but which is dropped at a predetermined seismic intensity, and a string-like shape having the other end attached to the knob of the earth leakage breaker attached to the weight. And the base unit has a mounting table on which the weight is mounted, and the mounting table is configured to be able to adjust the drop seismic intensity of the weight mounted thereon.
[0016]
At this time, the present invention, when adjusting the drop seismic intensity of the weight placed on the mounting table, includes a plurality of mounting tables that can be detachably attached to the mounting table. Features.
[0017]
BEST MODE FOR CARRYING OUT THE INVENTION
The drawings show an embodiment of the breaker shut-off device according to the present invention. In FIGS. 1 to 5, what is indicated by reference numeral 1 is a spherical weight. The weight 1 shown in the drawings is made of lead, but is not limited to this. For example, other materials having a high specific gravity such as iron and copper can be used. The shape of the weight is not limited to a spherical shape.
[0018]
In this embodiment, the surface is coated with a resin 1b of a non-conductive material such as PVC. If the weight 1 is made of a conductive material even if it is made of another material, it is desirable to cover the surface with a non-conductive material in order to enhance safety.
[0019]
Next, what is indicated by the reference symbol 2 is a platform on which the weight 1 is placed and which is dropped when given a predetermined shaking. The base 2 is made of a non-conductive material such as PVC, for example, by molding. The mounting plate 2a and the mounting plate 2b have an angled cross section. It is formed. The mounting plate 2a has a front rectangular shape, and the mounting plate 2b has a flat pointed shape at the free end on the front side. However, the shapes of the mounting plate 2a and the mounting plate 2b are not limited. If the mounting plate portion 2b is formed into a flat pointed shape as in the embodiment, there is an advantage that the weight 1 mounted thereon can easily fall. On the mounting plate portion 2b, there is provided a mounting table 2c having a slightly raised and slightly depressed upper surface, and the weight 1 is mounted thereon. Although the mounting table 2c is slightly raised from the mounting plate 2b, the mounting table may be formed by slightly recessing the upper surface of the mounting plate 2b.
[0020]
The shape of the depression 2d provided in the mounting table 2c is curved following the outer periphery of the weight, but is not necessarily limited to this curved shape. In short, the weight 1 placed thereon does not drop due to slight shaking or vibration, but it is sufficient if the weight 1 is configured to drop when given shaking or vibration is applied.
[0021]
The diameter of the weight 1 is that of the embodiment, the diameter of lead is 20 mm, and the weight is 43.35 g. The weight of the weight 1 is set to 43.35 kg so that the breaker to be described later cannot be lowered (turned off) only by the weight of the weight 1. In this way, the mounting position of the main body 2 can be adjusted in a state where the weight 1 is hung from the breaker via the string-like material, so that the mounting operation of the breaker shut-off device is easy and reliable. It has advantages. The weight of the weight 1 is not necessarily limited to 43.35 kg. In short, during an earthquake, it is only necessary to apply acceleration to the falling weight 1 and lower the breaker knob to turn off the weight. If the weight 1 is made lightweight, even if it is accidentally dropped on the floor, it may damage objects or damage feet. It is possible to prevent injuries from dropping on the device as much as possible. The actual diameter of the weight 1 is 21 mm because the outer periphery of the weight 1 is coated with a 0.5 mm PVC resin. The outer diameter of the depression 2d of the mounting table 2c is 9 mm, and the inner diameter of the depression is 7 mm. The open end side of the mounting plate portion 2b, that is, the front side having a pointed shape, is configured to protrude toward the front side by about 1 mm when the weight 1 is mounted on the mounting table 2c. This is to prevent the back side of the lid from contacting the weight 1 when a breaker is installed in a switchboard with a lid, for example.
[0022]
A pair of holding members 4 and 4 are protruded above the mounting plate 2a, and a level 5 is attached to the holding members 4 and 4 so as to be parallel to the mounting plate 2b. ing. In addition, there is no limitation on the mounting means, method, mounting position, and the like of the level 5 with respect to the mounting plate portion 2b, and it is not limited to the embodiment. In short, it is sufficient that the horizontal state of the mounting plate 2b can be confirmed when the mounting plate 2a is mounted on a switchboard or a wall.
[0023]
The attachment plate portion 2a is further provided with a locking means 6 for passing a string-like object, which will be described later, for suspending the weight 1 therein, between the level 5 and the mounting plate portion 2b. This locking means 6 is not limited to the embodiment in its configuration, mounting position and the like. In short, it is sufficient if the structure is such that the movement is smooth through the string-like material and the knob mounting means described later is locked.
[0024]
The instruction symbol 7 is the above-described string-shaped object that suspends the weight 1. The embodiment is a metal chain, but is not limited to this. In addition, a wire, a strong string, or the like that can withstand deterioration over time is sufficient. This string-like object 7 considers the case where the breaker shut-off device according to the present invention is not attached directly below the breaker but is attached above or beside the breaker, or considers the difference in the operating resistance of the knob of each breaker. In addition, another type of cord having a different length can be prepared to adjust the acceleration.
[0025]
In the case where the cord 7 is made of a conductive material, it is desirable to apply a coating or coating of a non-conductive material on its surface. One end of the cord is attached to the attachment piece 1a provided on the weight 1 and passes through the above-described locking means 6 and, at its free end, to the switchboard 8 as shown in FIGS. A knob attaching means 11 attached to the knob 10 of the attached breaker 9 is attached.
[0026]
The knob mounting means 11 is in the form of a box made of a PVC resin in the embodiment, and is configured to be attached to the knob 10 by covering the knob 10 from above. The tip of the knob mounting means 11 is cut into a bevel, and is mounted so that the longer side of the knob is located below the knob 10. The configuration of the knob mounting means 11 is not limited to that of the embodiment. For example, various types such as a clip and a ring can be considered. There is an advantage that the mounting is simple and the knob 10 can be operated reliably when the weight 1 falls.
[0027]
In consideration of the fact that various known knobs have a wide width, the knob mounting means 11 has a size that can be attached to the widest one among commercially available breakers. As shown in FIG. 7, leaf springs 12 and 12 are provided as an option so that they can be firmly attached to the narrow knob. With respect to a knob having a width smaller than that of the knob mounting means 17, the use of the knob mounting means 17 enables mounting without play. Furthermore, in consideration of the difference in the size of the breaker knob, large, medium, and small pieces may be prepared in advance so that the string-like object can be easily attached and detached. The length of the cord can be arbitrarily adjusted as needed.
[0028]
Therefore, when installing on the breaker 9, the adhesive layer 13 provided on the back surface of the mounting plate portion 2 a of the base portion 2 is exposed by peeling the release sheet 14, and is adhered below the breaker 9 of the switchboard 8. Let it. At this time, the level 5 mounted on the mounting plate 2a makes it easy to bring out the horizontal state of the mounting plate 2b.
[0029]
Next, as shown in FIGS. 1 and 4, the knob attaching means 11 is put on the knob 10 and is fixed to the knob 10. The mounting plate 2a is attached to the switchboard 8 if the switchboard 8 has enough space, but if the switchboard 8 does not have the space, the wall 15 is used. In any case, it is necessary to provide the slack 7 with sufficient slack between the knob attaching means 11 attached to the knob and the weight 1 so that the falling weight 1 is accelerated.
[0030]
When installed in this manner, an earthquake of a predetermined seismic intensity comes, and when the building shakes, the base 2 also shakes, and the weight 1 placed on the mounting table 2c falls, and the string and the weight are accelerated. The knob 10 is tilted downward through the object 7, and the breaker 9 can be turned off.
[0031]
In this embodiment, when the seismic intensity is 5 or more, the weight 1 falls and the breaker 9 is turned off, but the seismic intensity can be set arbitrarily.
[0032]
FIG. 8 shows another embodiment of the breaker shut-off device according to the present invention. According to the drawing, the level 20 is located below the mounting plate 21a of the base 21, that is, below the mounting plate 21b. It is attached via a holding member 22 (only one is shown). In addition, there is no limitation on the mounting means of this level including the above-mentioned embodiment. It can be glued.
[0033]
When implemented in this manner, there is an advantage that the installation space can be omitted when the mounting plate 21a of the base 21 is mounted on the switchboard provided with the breaker.
[0034]
9 to 11 show still another embodiment of the breaker shut-off device according to the present invention. According to the drawing, the mounting table is composed of three types: a small mounting table 25a, a middle mounting table 25b, and a large mounting table 25c, and the small mounting table 25a is formed integrally on the mounting plate 27 of the base 26. However, as shown in FIG. 9, the middle mounting table 25b and the large mounting table 25c are separately formed from the small mounting table 25a. However, the middle mounting table 25b and the large mounting table 25c each have a ring shape as shown in FIGS. 10 and 11, and the middle mounting table 25b is fitted to the outside of the small mounting table 25a. Is configured to be fitted on the outside of the middle mounting table 25b placed on the outside of the small mounting table 25a, and by changing the height of each, the middle mounting table fitted on the outside of the small mounting table 25a. In the case where the weight 28 is placed on the 25b, as shown in FIG. 10, the weight 28 is devised so as not to hit the small mounting table 25a, and the weight 28 is placed on the large mounting table 25c. As shown in FIG. 11, the weight 28 is designed so as not to hit the middle mounting table 25b.
[0035]
Therefore, when the breaker shut-off device according to the present invention is set, the shaking of the building is different even at the same seismic intensity depending on the structure and condition of the building.For example, in the case of an aged wooden house, etc. As shown in FIG. 9, the weight 28 is placed and set on the small mounting table 25a so that the weight 28 falls from the small mounting table 25a at a seismic intensity where a building with a seismic intensity of 5 or more may collapse. Is what you do. For a building constructed in accordance with the new seismic standards (revised in 1981), as shown in FIG. 10, the middle mounting table 25b is fitted to the outside of the small mounting table 25a, and is used. As shown in FIG. 11, the large mounting table 25c is further fitted to the outside of the middle mounting table 25b for a building constructed to fall at a strength of 6 or more and further conforming to the new Building Standard Law, as shown in FIG. The weight is placed on top of it and used so that it falls at a seismic intensity of 7 or more.
[0036]
With this configuration, even if the seismic intensity is the same, depending on the building or ground where the breaker shut-off device according to the present invention is set, the breaker is operated and the power supply is operated when there is no risk of collapse or leakage. It is possible to prevent excessive reaction such as cutting off as much as possible.
[0037]
The means for adjusting the drop seismic intensity of the weight placed on the mounting table is not limited to the above. For example, the mounting table having the diameter of a small, medium, or large tray is mounted on the mounting section 26. It may be configured separately from the mounting plate portion 27, and may be screwed onto the mounting plate portion one by one as needed.
[0038]
Furthermore, the number of mounting tables is not limited to three types, but may be two types or four or more types.
[0039]
In addition, the mounting table is equipped with an adjusting screw mechanism that can adjust the height arbitrarily, so that the falling seismic intensity of the weight to be mounted on it can be adjusted steplessly by means such as screwing. can do.
[0040]
Further, in the case where there are small breakers 16 in the switchboard 8, the breaker shut-off device according to the present invention is installed for each of the small breakers 16 as described above, and these small breakers 16 are selectively selected and turned off. It is also possible.
[0041]
Further, the mounting table according to the present invention has an effect that the fall seismic intensity of the weight can be kept at the set value because dust does not collect around the pan of the weight.
[0042]
Furthermore, if the base unit is a mounting plate unit, or the mounting table contains a fluorescent agent or a luminous agent, or if a coating agent is used, it is easy to find the position of the breaker in the darkness when the power is turned off. This makes it easy to reset the breaker.
[0043]
Furthermore, the breaker shut-off device according to the present invention can be mounted on the upper side or the side of the breaker, and in this case, the tip of the string-like object can be picked up without passing the string-like object through the locking means. And is attached by being pierced and attached to the attachment hole provided in.
[0044]
【The invention's effect】
Since the present invention is configured as described above, the following effects can be obtained.
[0045]
According to the first aspect of the present invention, the mounting table on which the weight is mounted can be easily leveled by the level, so that the falling seismic intensity of the weight can be made accurate, and the weight can be dropped and malfunction. This can effectively prevent the occurrence of a fire due to an earth leakage during an earthquake or a short circuit caused by a fall of an electric device during an earthquake.
[0046]
According to the second aspect of the present invention, the weight becomes large even if the weight is small, the insulation is obtained, and the safety is increased.
[0047]
With this configuration, when the weight falls from the mounting table, there is no need to worry that the knob mounting means is caught by the locking means and the weight falls to the floor and breaks the object.
[0048]
According to the structure as described in claim 4, the string-like object or the knob mounting means made of a conductive material acquires the insulating property, so that an effect of improving safety can be obtained.
[0049]
According to the fifth aspect, it is possible to provide an effect that the mounting of the table is facilitated and the mounting table is easily leveled.
[0050]
With such a configuration, it is possible to provide an effect that a single breaker cutoff device can handle picking of breakers of various sizes.
[0051]
When configured as in claims 7 and 8, the seismic intensity for operating the breaker can be selected according to the type, structure, and aging degree of the building, and the effect of preventing an excessive reaction of the breaker cutoff device can be prevented. I can play.
[Brief description of the drawings]
FIG. 1 is a front view showing a use state of a breaker shut-off device according to the present invention.
FIG. 2 is a plan view of a base portion of the breaker shut-off device shown in FIG. 1;
FIG. 3 is a plan sectional view of a base portion of the breaker shut-off device shown in FIG. 1;
FIG. 4 is a side view of the breaker shut-off device shown in FIG. 1;
FIG. 5 is a side sectional view of a base part of the breaker shut-off device shown in FIG. 1;
FIG. 6 is an explanatory diagram illustrating a use state of the breaker cutoff device according to the present invention.
FIG. 7 is an explanatory view showing another embodiment of the knob mounting means of the breaker shut-off device according to the present invention.
FIG. 8 is a side sectional view illustrating another embodiment of the breaker shut-off device according to the present invention.
FIG. 9 is an explanatory diagram for explaining still another embodiment of the breaker shut-off device according to the present invention.
FIG. 10 is an explanatory diagram illustrating another use mode of the breaker shut-off device illustrated in FIG. 9;
FIG. 11 is an explanatory view illustrating still another use mode of the breaker shut-off device shown in FIG. 9;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 weight 2, 21 base part 2a, 21a mounting plate part 2b, 21b mounting plate part 2c mounting table 5, 20 level 6 locking means 7 string-like material 9 breaker 10 knob 11 knob mounting means 12 leaf spring 13 adhesive layer

Claims (8)

A weight, a pedestal having a structure on which the weight is placed but dropped at a predetermined seismic intensity, and a string-shaped object having the other end attached to the knob of the earth leakage breaker attached to the weight. A breaker shut-off device, wherein a level is attached to the base. The breaker cut-off device according to claim 1, wherein the weight is made of lead or iron, and has a surface coated with a resin coating of a non-conductive material. On the free end side of the string-like object, there is provided knob attaching means for attaching to a knob of a breaker, and the base portion normally passes through the string-like object, but when the weight falls, the knob attaching means is provided. 3. The breaker shut-off device according to claim 1, further comprising a locking means for locking the breaker. The breaker according to any one of claims 1 to 3, wherein when the string-like object and / or the knob attaching means are made of a conductive material, the surface thereof is coated with a resin of a non-conductive material. Shut-off device. 5. The base according to claim 1, wherein an adhesive member for attaching the power supply to a power distribution board or a wall to which the power distribution board is mounted is attached to the mounting plate. Breaker shut-off device. The knob according to any one of claims 1 to 5, wherein the knob mounting means has a box shape into which a knob is fitted, and a leaf spring is optionally attached to cope with the size of the knob. The breaker shut-off device as described in the above. A weight, a pedestal having a structure on which the weight is placed but dropped at a predetermined seismic intensity, and a string-shaped object having the other end attached to the knob of the earth leakage breaker attached to the weight. The breaker shut-off device, wherein the base has a mounting table on which the weight is mounted, and the mounting table is configured to adjust a drop seismic intensity of the weight mounted thereon. 8. The method according to claim 7, further comprising adjusting a falling seismic intensity of the weight placed on the mounting table, wherein the mounting table includes a plurality of mounts that can be detachably mounted on the mounting section. 3. The breaker shut-off device according to claim 1.

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