JP4990673B2 - Circuit breaker - Google Patents

Description

The present invention relates to a circuit breaker having a handle operation suppression function for holding an operation handle of a circuit breaker accommodated 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 another padlock is combined with 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-A-7-220609 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 not padded. 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 to make is performed in a separate process, there are problems that the operation is complicated and that either the handle cap or the lock pin is easily lost.

Accordingly, the object of the present invention has been made in view of the above-described problems, and in the steering operation restrained state, the handle lock device is detached from the handle when an external force is applied thereto. While the operation is not lost, the operation to make the handle operation suppressed is easy, but it can be easily recognized from the outside that the circuit breaker should not be operated, and the circuit is interrupted. An object of the present invention is to provide a circuit breaker capable of recognizing a desired operation state in a normal state of the device and reliably suppressing steering operation.

In order to achieve the above-mentioned 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 an 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, and in the open circuit state or the closed circuit state of the circuit breaker, the gripping portion is A hole closing member is provided in the opening hole after the operation handle member is removed and the grip portion of the operation handle member is removed. A circuit breaker is provided, characterized in that an accommodating portion to be provided is provided in the vessel body to prevent an unnecessary opening operation or closing operation of the circuit breaker.

Thereby, after operating the circuit breaker in a state where it is desired to hold the circuit breaker, that is, in an open circuit state or a closed circuit state, the gripper is removed, and the opening is closed using the hole closing member that closes the opening hole on which the operation suppression display is performed. By closing the hole, the circuit breaker cannot be operated easily, and it can be easily recognized from the outside that the circuit breaker should not be operated. Can be provided in the housing portion, so that the gripping portion is not lost before the next operation is performed, and a circuit breaker capable of reliably suppressing unnecessary operations can be provided. Is.

In addition, the circuit breaker is configured such that the gripping portion of the operation handle member that opens or closes by acting on the contact opening / closing mechanism of the circuit breaker is projected from an opening hole provided in the body constituting the outline of the circuit breaker. vessel, the gripping portion configured to removably with said operating handle member, in an open circuit state or closed state of the circuit breaker, remove the grip portion from said operating handle member, the grip portion of the operating handle member The opening hole after removal is provided with a hole closing member for closing the opening hole on the front surface or the front surface and the back surface, which displays the desired operation state in the normal state of the circuit breaker, and the removed gripping portion A circuit breaker is provided, characterized in that an accommodating portion for accommodating is provided in the container body to prevent an unnecessary opening operation or closing operation of the circuit breaker. It may be.

As a result, after operating the circuit breaker in a state where it is desired to hold it, that is, in an open circuit state or a closed circuit state, the gripping portion is removed, and a desired operation state is displayed on the front surface or the front and back surfaces when the circuit breaker is in a normal state. The circuit breaker cannot be operated easily and cannot be operated by closing the opening hole using a hole closing member that closes the opened hole. Can be easily recognized from the outside, and the removed gripping part is housed in the housing part, so that the gripping part is not lost before the next operation is performed. It is possible to provide a circuit breaker capable of suppressing the above.

Further, in place of the grip portion, a dedicated jig for performing an opening operation or a closing operation is detachably attached to 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 or closed state of the circuit breaker, the dedicated jig is removed from the operation handle member, and the accommodating portion for accommodating the removed dedicated jig is A circuit breaker may be provided as a feature that is provided in a container body and is configured to prevent unnecessary opening or closing operation of the circuit breaker.

Thus, 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 operation is performed until the next operation is performed. It is possible to provide a circuit breaker in which the dedicated jig is not lost and the unnecessary operation can be surely suppressed.

Further, in place of the grip portion, a dedicated jig for performing an opening operation or a closing operation is provided detachably from the contact opening / closing mechanism of the circuit breaker, and the circuit breaker is opened or closed. Is operated by attaching the dedicated jig, 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 contact opening / closing mechanism, and the removed dedicated jig is accommodated. A circuit breaker may be provided by providing a housing portion in the vessel body to prevent unnecessary circuit opening or closing operation of the circuit breaker.

Thereby, the circuit breaker can be configured so that the circuit breaker can be operated only by a dedicated jig, and in particular, the operation handle is configured to act on a handle receiving member which is a part of the contact opening / closing mechanism. In the circuit breaker having a fast turn-on structure, the removed dedicated jig is accommodated in the accommodating portion, 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.

Further, 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, and the gripping member The circuit breaker may be provided in a closed state when the part or the dedicated jig is removed.

Thereby, compared with the case where the hole closing member is provided as a separate body, the possibility of losing the hole closing member can be reduced, and unnecessary operations inside the vessel body can be prevented and more reliably unnecessary. 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. It is possible to provide a circuit breaker capable of suppressing a difficult operation.

According to the present invention, in the handle operation restrained state, the handle lock device is prevented from being removed from the handle and not being in the handle operation restrained state by applying an external force. Although it is easy to work, it can be easily recognized from the outside that it is a circuit breaker that should not be operated, and it can also recognize the desired operating state in the normal state of the circuit breaker, so that the handle There exists an effect that the circuit breaker which can suppress operation can be provided.

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 inside the container 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 part 105 for housing the removed grip part 104 is provided on the front side of the power supply side terminal part 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 rotatably provided in the container body 101 between the open state or the 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 to do.

The operation handle member 103 is formed with a mounted portion 1031 to which the mounting portion 1041 of the grip portion 104 is attached 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. In addition, it is good also as a structure which can attach the holding part 104 to the operation handle member 103, such as a screw type, a fitting type, and a clamping type, and can also operate by covering the operation handle member 103 with the holding part 104.

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 so as 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.

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.

Similar to the first embodiment, the attachment portion 201 and the attached portion 1031 have a mutually 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 cover the operation jig member 2 on the operation handle member 103. .

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 detached from the operation handle member 103 and is 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, for example, 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 the 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 of the opening hole 102 so as to be attachable to the opening hole 102. A protrusion 303 is formed to be hooked on the load side end edge portion of the opening hole 102. The hole closing member 3 is attached by first engaging the protrusion 302 with the load side end edge of the opening hole 102 and then pushing the end 303 so as to be hooked with the power source 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 grip portion 104 or the dedicated jig 2 is not lost, and an 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.

Further, the thin plate-like hole closing member 3 is made of an elastic body so as to be freely bent, and the open / close state of the circuit breaker 1 is described on both the front and back surfaces of the hole closing member 3. The circuit breaker state is always ON ", and the other side is" circuit breaker state always OFF ", etc., and appropriate description according to the ON / OFF state of the circuit breaker that prohibits operation. By selecting and attaching 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 from operation 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 of the present invention will be described with reference to FIG.

In the fourth embodiment, the circuit breaker 1 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 hooking 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. In addition, the gripping portion 104 or the dedicated jig 2 is not lost. Further, 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 in which the handle operation is suppressed. A good circuit breaker can be provided.

In addition, the hole closing member 103 may be formed by integral molding by extending a part of the 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 a quick turn 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.

At the end of the dedicated jig 2, an attachment portion 201 is provided so as to be attachable to an attachment portion 1061 provided on the handle receiving member 106. As in the second embodiment, the attachment portion 201 and the covered portion are attached. The attachment portions 1061 have a relationship corresponding to each other, and are 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, in the circuit breaker 10, 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 being accommodated.

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. Thus, 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 a manager who is in a position to manage the operation of the circuit breaker, such as an electrician, for example. By taking it out from 105, it is possible to perform the operation quickly, and it is possible to more reliably suppress an unnecessary handle operation.

Next, a sixth embodiment of the circuit breaker according to 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 source side of the opening hole 102, and the accommodation portion 105 and the opening 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.

A protrusion 301 is formed at the power source side end of the hole closing member 3 and a protrusion 302 is formed at the load side end, and when the closed portion covering the accommodating portion 105 and the opening hole 102 is formed, The protrusion 301 is hooked on a recess 1051 provided at 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.

In addition, the hole closing member 103 may be formed by integral molding by extending a part of the body, 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 possibility of losing the removed gripping part or the dedicated jig. The circuit breaker can be provided by taking out the gripping part and the dedicated jig from the housing part, thereby enabling quick operation and reliably suppressing the steering operation.

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. As for the extending direction of the hole closing member 3 formed in the opening hole, in addition to the configuration extending from the power supply side edge of the opening hole 102 described in the fourth embodiment in the direction of the load side, 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 it 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.

Moreover, about the material of the hole closing member 3 demonstrated in the 3rd Example, you may form using a metal other than a resin-made material.

In addition to the columnar 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 configured to removably with said operating handle member, in an open circuit state or closed state of the circuit breaker, remove the grip portion from said operating handle member, removed the grip portion of the operating handle member The opening hole is provided with a hole closing member that closes the opening hole for which the operation suppression display has been performed, and a housing part for housing the removed gripping part is provided in the body so that the circuit breaker is not used. A circuit breaker characterized in that it prevents the open circuit operation or the close circuit operation. 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 configured to removably with said operating handle member, in an open circuit state or closed state of the circuit breaker, remove the grip portion from said operating handle member, removed the grip portion of the operating handle member The opening hole is provided with a hole closing member that closes the opening hole on the front surface or on the front and back surfaces of the circuit breaker, and displays the desired operation state, and accommodates the removed gripping portion. A circuit breaker characterized in that an accommodating portion is provided in the container body to prevent unnecessary opening 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 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 a housing portion for housing the removed dedicated jig is provided in the body The circuit breaker according to claim 1 or 2, wherein the circuit breaker is configured to prevent unnecessary opening operation or closing operation of the circuit breaker. In the case of performing an opening operation or closing operation of the circuit breaker by providing a dedicated jig for performing an opening operation or closing operation in a detachable manner with the contact opening / closing mechanism of the circuit breaker instead of the grip portion The dedicated 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 contact opening / closing mechanism, and the housing unit that houses the removed dedicated jig the provided on the device body, the circuit breaker according to claim 1, wherein or claim 2, wherein it has a structure to prevent unwanted open operation or closing operation of the circuit breaker. 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 any one of claims 1 to 4 , wherein the circuit breaker is closed when the dedicated jig is removed. 6. The circuit breaker according to claim 5, 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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