JP2008152929A - Circuit breaker - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a circuit breaker equipped with a handle lock device which can be attached and detached by easy operation, in which there is no possibility of missing or coming off by an external force or the like, and in which unnecessary operation can be prevented surely. <P>SOLUTION: In the circuit breaker in which by acting on an electric contact switching mechanism of the circuit breaker from an opening hole 102 installed at a container constituting an outline of the circuit breaker 1 a gripping part 104 of an operation handle member 103 to open or close a circuit is protruded, the gripping part is constituted detachably from the operation handle member, and in an open circuit state or a closed circuit state of the circuit breaker, the gripping part is removed from the operation handle member, and a housing part 105 to house the removed gripping part is installed at the container. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

The present invention relates to a circuit breaker having a handle operation suppressing function for holding an operation handle of a circuit breaker housed in a distribution board in an open circuit state or a closed circuit state and preventing unnecessary operation. .

As a device for locking the handle that holds the operation handle of the circuit breaker in the on or off state, for example, a device that prevents the operation handle from rotating in the turning direction by covering the operation handle in the on state with a handle lock. is there. (For example, see Patent Document 1)

In addition, a handle lock device is attached to the knob of the operation handle of the circuit breaker and the lock cover is configured to be hooked to the opening edge of the case cover, or a padlock is combined with another part of the lock cover. Some are designed to be hung. (For example, see Patent Document 2)

Further, there are a handle cap for fitting the handle lock device to the operation handle, and a handle cap formed by a pin separate from the handle cap. (For example, see Patent Document 3)

JP 7-220609 A JP-A-9-270224 JP-A-10-241541

In the first background art, since the handle lock itself is detachable from the operation handle, the handle lock may be lost.

In the second background art, it takes time to attach to the circuit breaker, and when attaching to the operation handle, the U-shaped lock cover is pushed out and locked to the outside of the knob. Because it is made of a flexible resin molded product with flexibility, it cannot secure sufficient strength, and it can be easily detached from the handle by applying a slight external force when it is not locked. There was a problem in reliability and reliability.

In the third background art, when the lock pin and the handle cap are formed separately, the step of inserting the handle cap into the operation handle and the operation handle and the handle cap are integrated with the lock pin. Since the process of making is performed in a separate process, the work is complicated and there is a problem that either the handle cap or the lock pin is easily lost.

Accordingly, an object of the present invention has been made in view of the above-described problems. In the steering operation restrained state, the handle lock device is detached from the handle when an external force is applied, and the handle is released. An object of the present invention is to provide a circuit breaker capable of reliably suppressing the steering operation while preventing the operation from being lost and facilitating the operation for setting the steering operation to be suppressed.

In order to achieve the above-described object, according to claim 1 of the present invention, the circuit breaker is opened or closed by acting on the contact opening / closing mechanism of the circuit breaker from the opening provided in the body constituting the outline of the circuit breaker. The circuit breaker configured so that the gripping portion of the operation handle member protrudes is configured to be detachable from the operation handle member. When the circuit breaker is in an open state or a closed state, the gripping portion is A circuit breaker characterized in that it is configured to prevent unnecessary opening or closing operation of the circuit breaker by providing the container with a housing part that is detached from the operation handle member and accommodates the removed gripping part. Is provided.

As a result, the circuit breaker cannot be easily operated by removing the grip after the circuit breaker is desired to be held, that is, after being operated in an open circuit state or a closed circuit state. By providing the removed gripping part in the storage part, there is no loss of the gripping part until the next operation, and a circuit breaker that can reliably suppress unnecessary operations is provided. Is something that can be done.

Further, in place of the grip portion, a dedicated jig for performing an opening operation or a closing operation is provided so as to be detachable from the operation handle member, and when performing the opening operation or the closing operation of the circuit breaker, the dedicated operation is performed. A jig is attached and operated, and after the operation, in the open circuit state or the closed circuit state of the circuit breaker, the dedicated jig is removed from the operation handle member, and the housing portion for housing the removed dedicated jig is A circuit breaker may be provided as a feature that is provided in a container body to prevent an unnecessary opening operation or closing operation of the circuit breaker.

As a result, the circuit breaker can be configured so that the circuit breaker can be operated only by the dedicated jig, and the removed dedicated jig is accommodated in the accommodating portion so that the circuit breaker can be operated before the next operation. It is possible to provide a circuit breaker capable of reliably suppressing unnecessary operations without losing the dedicated jig.

Further, in the circuit breaker in which the contact opening / closing mechanism of the circuit breaker is provided so as to be visible from an opening hole provided in the body constituting the outline of the circuit breaker, the contact opening / closing mechanism, the dedicated jig, When the circuit breaker is opened or closed, the dedicated jig is attached and operated. After the operation, the circuit breaker is opened or closed. The jig is removed from the contact opening / closing mechanism, and the container body is provided with a housing portion for housing the removed dedicated jig, thereby preventing an unnecessary opening or closing operation of the circuit breaker. A circuit breaker may be provided.

As a result, the circuit breaker can be configured such that the circuit breaker can be operated only by a dedicated jig, and in particular, the operation handle is configured to act on the handle receiving member that is a part of the contact opening / closing mechanism. In a circuit breaker with a fast turn-on structure, the removed dedicated jig is stored in the storage section, so that the dedicated jig is not lost by the time of the next operation. A circuit breaker capable of suppressing unnecessary operations can be provided.

A circuit breaker may be provided by providing a hole closing member that closes the opening when the gripping part or the dedicated jig is removed.

Accordingly, since the opening hole is blocked by the hole closing member, it is possible to provide a circuit breaker capable of preventing unnecessary operation into the vessel body and more reliably suppressing unnecessary operation. is there.

The hole closing member is rotatably attached to the body, and is opened when the gripping portion or the dedicated jig is attached to operate the circuit breaker. The circuit breaker may be provided in a closed state when the part or the dedicated jig is removed.

As a result, the possibility of losing the hole closing member can be reduced as compared with the case where the hole closing member is provided as a separate body, and unnecessary operations inside the vessel body can be prevented and more reliably used. The circuit breaker which can perform operation suppression can be provided.

In addition, a circuit breaker may be provided in which the accommodating portion is provided in the vicinity of the opening hole so that the accommodating portion is covered with the hole closing member.

As a result, the removed gripping part or the dedicated jig can be accommodated in such a way that it cannot be seen, and there is no risk of losing it. Therefore, it is possible to provide a circuit breaker capable of suppressing the operation.

According to the present invention, there is an effect that it is possible to provide a circuit breaker that can surely suppress the steering operation while facilitating the operation for setting the steering operation suppression state.

Hereinafter, embodiments of the present invention will be described in detail with reference to FIGS.
FIG. 1 is an external view of a circuit breaker 1 showing a first embodiment of the present invention.
In the circuit breaker 1, an opening hole 102 is formed in the body 101 constituting the outer shell, and an operation for opening or closing the contact opening / closing mechanism by acting on the contact opening / closing mechanism of the circuit breaker 1 from the opening hole 102. The handle member 103 is provided so as to be exposed, and the operation handle member 103 is configured such that a grip portion 104 is detachably provided.

One end of the vessel body 101 is provided with a power supply side terminal portion 11 connected to a bus provided on the distribution board and supplied with power, and the other end portion is provided with a load side terminal portion for supplying power to the load side. 12 is provided. In addition, a tripping device is provided within the vessel body 101 to act on the contact opening / closing mechanism to release the contact opening / closing mechanism and open the contact when an overcurrent occurs in the circuit. .

Further, in the circuit breaker 1, a housing portion 105 for housing the removed grip portion 104 is provided on the front side of the power supply side terminal portion 11 in the body. The accommodating portion 105 is provided by forming a recess, and is configured to accommodate the grip portion 104. The concave portion is formed to have substantially the same size so that the holding portion 104 or the dedicated jig 2 can be fitted and fixed, and is configured so that the holding portion 104 or the dedicated jig 2 is not dropped and lost after being accommodated. is doing.

The operation handle member 103 is provided in the container body 101 so as to be rotatable between an open state or a closed state of the contact opening / closing mechanism. In this embodiment, the operation handle member 103 is connected to the load side terminal portion 12 from the load side terminal portion 12. The contact opening / closing mechanism is closed when rotated in the direction of the power supply side terminal portion 11, and the contact opening / closing mechanism is opened when rotated in the direction of the load side terminal portion 12 from the power supply side terminal portion 11. It is the composition which does

The operation handle member 103 is formed with a mounted portion 1031 to which the mounting portion 1041 of the grip portion 104 is mounted when facing the opening hole 102 of the circuit breaker 1. The attachment portion 1041 and the attached portion 1031 have a relationship corresponding to each other. It is also possible to adopt a configuration in which the grip portion 104 can be attached to the operation handle member 103 and can be operated by covering the operation handle member 103 with the grip portion 104, such as a screw type, a fitting type, and a clamp type.

The operation method of the circuit breaker 1 is as follows. When operating the circuit breaker 1, first, the grip portion 104 is taken out from the housing portion 105, and the grip portion 104 is attached to the operation handle member 103. Next, the circuit breaker 1 is opened or closed by holding the grip 104 so that the circuit breaker 1 is in a desired state, that is, an open state or a closed state. Then, after the operation is performed, the grip portion 104 is detached from the operation handle member 103 and accommodated in the accommodating portion 105. As a result, the circuit breaker 1 can be operated only when necessary, and the grip portion 104 is not lost, and unnecessary handle operation can be suppressed. The removed grip 104 is stored by a manager who is in a position to manage the operation of the circuit breaker, such as an electrician, for example, so that unnecessary handle operations can be more reliably suppressed.

In the closed state, when an overcurrent is generated in the circuit and the circuit is to be interrupted, the contact opening / closing mechanism is released by the tripping device inside the container body 101 to open the contact. At this time, the operation handle member 103 is also rotated in conjunction with the operation of the contact opening / closing mechanism. In order to confirm whether the circuit breaker 1 is in the open circuit state or the closed circuit state, the position of the mounted portion 1031 provided on the operation handle member 103 is positioned on the power source side or on the load side. It can be determined by visually confirming whether or not to do so.

Next, a second embodiment of the circuit breaker according to the present invention will be described with reference to FIG.

In the second embodiment, a dedicated jig 2 is provided in place of the grip portion 104 in the circuit breaker 1 of the first embodiment. At the end of the dedicated jig 2, a mounting portion 201 is provided so as to be attachable to a mounted portion 1031 provided on the operation handle member 103.

As in the first embodiment, the attachment portion 201 and the attached portion 1031 have a corresponding relationship. In addition, it is good also as a structure which can attach the exclusive jig | tool 2 to the operation handle member 103, such as a screw type, a fitting type, and a clamping type, and can also cover the said operation handle member 103 with the said exclusive jig 2. .

The dedicated jig 2 is formed in a size that can be accommodated in the accommodating portion 105 in advance.

When operating the circuit breaker 1, first, the dedicated jig 2 is taken out from the housing portion 105, and the dedicated jig 2 is attached to the operation handle member 103. Next, the circuit breaker 1 is opened or closed by holding the dedicated jig 2 so that the circuit breaker 1 is in a desired state, that is, an open state or a closed state. . After the operation, the dedicated jig 2 is removed from the operation handle member 103 and accommodated in the accommodating portion 105. As a result, the circuit breaker 1 can be operated only when necessary, and the grip portion 104 is not lost, and unnecessary handle operation can be suppressed. The removed dedicated jig 2 is stored by a manager who is in a position to manage the operation of the circuit breaker, such as an electrician, so that unnecessary handle operations can be suppressed more reliably.

Next, a third embodiment of the circuit breaker of the present invention will be described with reference to FIG.

In the third embodiment, the circuit breaker 1 is configured by providing a hole closing member 3 so as to cover the opening hole 102 of the body 101.

The hole closing member 3 is formed in a substantially thin plate shape, and a cover portion is formed in a substantially central portion, and an end hooked on the power supply side edge portion of the opening hole 102 so as to be attachable to the opening hole 102. A portion 303 and a protrusion 302 that hooks on the load side edge of the opening hole 102 are formed. The hole closing member 3 is attached by first hooking the protrusion 302 on the load side edge of the opening hole 102 and then pushing the end 303 so as to hook on the power supply side edge. It is attached and fixed by the elasticity of the hole closing member 3 itself.

By attaching the hole closing member 3 to the opening hole 102 after the circuit breaker 1 is operated, it is possible to explicitly indicate that the circuit breaker 1 is a circuit breaker that should not be operated. At the same time, the holding portion 104 or the dedicated jig 2 is not lost, and unnecessary handle operation can be suppressed more reliably.

Furthermore, the surface of the hole closing member 3 may be explicitly configured as a circuit breaker that should not be operated, such as “operation prohibited”. Thereby, an unnecessary handle operation can be suppressed more reliably.

In addition, the thin plate-like hole closing member 3 is made of an elastic body so that it can be bent, and the open / closed state of the circuit breaker 1 is described on both the front and back surfaces of the hole closing member 3. The circuit breaker status is always ON ”, the other side is“ circuit breaker status always OFF ”, etc., and appropriate descriptions are given according to the ON / OFF status of the circuit breaker that prohibits operation. By selecting and mounting the bending direction so that it is on the front side, it is possible to grasp at a time whether the circuit breaker is prohibited to operate and whether the circuit breaker is on or off. It may be possible to provide a circuit breaker with good visibility and workability.

Next, a fourth embodiment of the circuit breaker according to the present invention will be described with reference to FIG.

In the circuit breaker 1, the fourth embodiment is configured such that the hole closing member 3 covering the opening hole 102 is rotatably attached to the body 101. As shown in FIG. 4, a thin plate-like hole closing member 3 is pivotally attached in the direction from the power supply side edge of the opening hole 102 to the load side so as to cover the opening hole 102 with flexibility. It is configured so that a closed state and an open state in which the opening hole 102 is exposed can be taken.

The end of the hole closing member 3 is provided with a protrusion for catching and engaging with the load side end edge of the opening hole 102. Thereby, when it is in the closed state to suppress the handle operation, it cannot be easily returned to the open state, and the unnecessary handle operation can be suppressed more reliably. Further, the gripping portion 104 or the dedicated jig 2 is not lost. Furthermore, since the hole closing member 103 is formed integrally with the container body 101, for example, there is no possibility of losing the hole closing member 103 during a period when the handle operation is suppressed, and workability is improved. A good circuit breaker can be provided.

The hole closing member 103 may be formed by integral molding by extending a part of the vessel body, and the opening hole may be provided to be openable and closable with flexibility.

Next, a fifth embodiment of the circuit breaker of the present invention will be described with reference to FIG.

The fifth embodiment is a circuit breaker having an early insertion structure in which an operation handle of the circuit breaker 10 is configured to act on a handle receiving member 106 which is a part of a contact opening / closing mechanism. A dedicated jig 2 is detachably provided on the member.

An attachment portion 201 is provided at the end of the dedicated jig 2 so as to be attachable to the attachment portion 1061 provided on the handle receiving member 106. Similar to the second embodiment, the attachment portion 201 and the covered portion are attached. The attachment portion 1061 has a relationship corresponding to each other, and is configured such that the dedicated jig 2 can be attached to the handle receiving member 106 and operated, such as a screw type, a fitting type, and a clamping type.

Further, the circuit breaker 10 is configured such that a housing portion 105 for housing the removed dedicated jig 2 is provided on the front side of the power supply side terminal portion 11 in the body. The accommodating portion 105 is provided by forming a recess, and is configured to accommodate the dedicated jig 2. The recesses are formed to have substantially the same size so that the dedicated jig 2 can be fitted and fixed, and is configured so that the dedicated jig 2 is not dropped and lost after receiving.

When operating the circuit breaker 1, first, the dedicated jig 2 is taken out from the housing portion 105, and the dedicated jig 2 is attached to the handle receiving member 106. Next, the circuit breaker 1 is opened or closed by holding the dedicated jig 2 so that the circuit breaker 1 is in a desired state, that is, an open state or a closed state. . After the operation, the dedicated jig 2 is removed from the handle receiving member 106 and accommodated in the accommodating portion 105. As a result, the circuit breaker 1 can be operated only when necessary, and the dedicated jig 2 is not lost, and unnecessary handle operation can be suppressed. The removed dedicated jig 2 is stored by an administrator who is in a position to manage the operation of the circuit breaker, such as an electrician, for example, so that the dedicated jig 2 can be placed in the housing portion when necessary. By taking it out from 105, it is possible to perform the operation quickly, and it is possible to more reliably suppress unnecessary handle operation.

Next, a sixth embodiment of the circuit breaker of the present invention will be described with reference to FIGS.

In the sixth embodiment, in the circuit breaker 1, an accommodation portion 105 for accommodating the removed grip portion 104 or the dedicated jig 2 is formed on the power supply side of the opening hole 102, and the accommodation portion 105 and the opening portion are opened. A hole closing member 3 is rotatably attached to the load body edge of the opening hole 102 so as to be able to cover the hole 102, and covers the housing part 105 and the opening hole 102. A closed state and an open state in which the housing portion 105 and the opening hole 102 are exposed can be taken.

When the projection 301 is formed at the power supply side end of the hole closing member 3 and the projection 302 is formed at the load side end, and when the housing portion 105 and the opening hole 102 are closed, The protrusion 301 is hooked on a recess 1051 provided on the power supply side edge of the housing portion 105, and the protrusion 302 is hooked on the load side edge of the opening hole 102 to be locked.

This eliminates the possibility of losing the removed grip 104 or the dedicated jig 2 and conceals the stored grip 104 or the dedicated jig 2 to more reliably suppress unnecessary operations. In addition, when the operation is necessary, the operation can be quickly performed by taking out the grip portion 104 or the dedicated jig 2 from the housing portion 105.

The hole closing member 103 may be formed by integral molding by extending a part of the container, and the accommodating portion 105 and the opening hole 102 may be provided to be openable and closable with flexibility. .

As described above, according to the circuit breaker 1 of the present invention, the operation for suppressing the handle operation is easy, and there is no risk of losing the removed gripping part or the dedicated jig. , By taking out the gripping part and the dedicated jig from the housing part, it is possible to provide a circuit breaker that can perform the operation quickly and can surely suppress the operation of the handle.

It should be noted that the present invention is not limited to the disclosed embodiments, and can be freely improved and modified as necessary without departing from the spirit of the invention. Regarding the extending direction of the hole closing member 3 formed in the opening hole, in addition to the configuration in which the opening side is extended from the power supply side edge of the opening hole 102 described in the fourth embodiment, the opening hole It is good also as a structure extended in the direction of the power supply side from the load side edge part of 102, and extended in the juxtaposition direction of the circuit breaker 1 from the left side surface or right side edge part of this opening hole 102 It is good also as the structure made to do.

In addition, the material of the hole closing member 3 described in the third embodiment may be formed using a metal in addition to a resin material.

In addition to the cylindrical shape described in the embodiment, the shape of the dedicated jig 2 may be configured by applying various shapes such as a rectangular shape and a shape that is easy to grip.

The handle operation suppressing member according to the present invention can be applied to a circuit breaker housed in a distribution board in place of a conventional handle lock device.

It is an external view of the circuit breaker of a 1st Example. It is an external view of the circuit breaker of a 2nd Example. It is an external view of the circuit breaker of a 3rd Example. It is an external view of the circuit breaker of a 4th Example. It is an external view of the circuit breaker of a 5th Example. It is an external view of the circuit breaker of a 6th Example. It is an external view of the circuit breaker of a 6th Example. It is an example of the first background art. It is an example of the second background art. It is an example of the third background art.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Circuit breaker 101 Body 102 Opening hole 103 Operation handle member 1031 Attached part 104 Grip part 1041 Attached part 105 Storage part 1051 Recess 106 Handle receiving member 1061 Attached part 10 Circuit breaker 11 Power supply side terminal part 12 Load side terminal Part 2 Dedicated jig 201 Attaching part 3 Hole closing member 301 Covering part 302 Projection 303 End

Claims (6)

A circuit breaker configured so that a gripping portion of an operation handle member that opens or closes by operating on a contact opening / closing mechanism of the circuit breaker protrudes from an opening provided in a body constituting an outline of the circuit breaker. The gripping portion is configured to be attachable to and detachable from the operation handle member, and when the circuit breaker is open or closed, the gripping portion is detached from the control handle member, and a storage portion for storing the removed gripping portion The circuit breaker is configured to prevent unnecessary opening operation or closing operation of the circuit breaker. In place of the grip portion, a dedicated jig for performing an opening operation or a closing operation is provided so as to be detachable from the operation handle member, and when performing the opening operation or the closing operation of the circuit breaker, the dedicated jig is used. After the operation, in the open circuit state or the closed circuit state of the circuit breaker, the dedicated jig is removed from the operation handle member, and a housing portion for housing the removed dedicated jig is provided in the body 2. The circuit breaker according to claim 1, wherein the circuit breaker is configured to prevent an unnecessary opening operation or closing operation of the circuit breaker. In the circuit breaker in which the contact opening / closing mechanism of the circuit breaker is visibly provided from an opening hole provided in the body constituting the outer part of the circuit breaker, the contact opening / closing mechanism and the dedicated jig are attached and detached. When the circuit breaker is opened or closed, the dedicated jig is attached and operated. After the operation, the circuit breaker is opened or closed. Is removed from the contact opening and closing mechanism, and the container body is provided with a housing portion for housing the removed dedicated jig, thereby preventing an unnecessary opening operation or closing operation of the circuit breaker. A circuit breaker. 4. The circuit breaker according to claim 1, further comprising a hole closing member that closes the opening when the gripping part or the dedicated jig is removed. The hole closing member is rotatably attached to the container body, and is opened when the gripping portion or the dedicated jig is attached to operate the circuit breaker. The circuit breaker according to claim 4, wherein the circuit breaker is closed when the dedicated jig is removed. 6. The circuit breaker according to claim 4, wherein the accommodating portion is provided in the vicinity of the opening hole so that the accommodating portion is covered with the hole closing member.

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