JP2014127281A - Handle lock device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a handle lock device in which suppression of operation can be canceled without recovering the handle lock device in the case the suppression of the operation of an operation handle becomes unnecessary.SOLUTION: A handle lock device 10 is mounted in an opening/closing operation knob part of a circuit breaker and suppresses a circuit opening/closing operation or cancels the suppression. The handle lock device 10 comprises: a handle holding part 11 of which the cross section is U-shaped, laterally surrounding the operation knob part in an operation handle; an insert protrusion 12 which is provided inside of the U shape of the cross section while protruding towards an open end portion in the U shape of the cross section, and engaged with a recess provided by the side of the operation knob part; and a pedestal part 13 which is formed integrally with the handle holding part 11 and regulates a motion of the opening/closing operation while being mounted in the operation knob part. The handle lock device 10 can be mounted so as to invert a direction of mounting to the operation knob part, such that an opening/closing operation suppressed state and a suppression canceled state can be freely switched.

Description

The present invention relates to a handle lock device for suppressing operation of an operation handle for manually performing a circuit opening / closing operation of a circuit breaker.

As a handle lock device for suppressing the operation handle of the circuit breaker from being manually operated from the outside, handle lock devices having various structures have been disclosed.

For example, in the handle lock device as shown in Patent Document 1, when the conventional handle lock device locks with a padlock, the lock hole of the knob is previously machined at the time of product shipment, or Once shipped, the invention was made in view of the fact that it had to be returned to the manufacturing factory, drilled, and then shipped again.

Specifically, a circuit that is fixed to the handle and protrudes to the outside of the case through the opening of the cover, and includes a knob that has a hollow hole on both sides parallel to the surface on which the handle rotates. As a device for locking the handle of the circuit breaker to the open circuit state and the closed circuit state of the circuit breaker, a first part (20) made of a flexible material and formed in a U shape, and the first part The knob part (9) is formed in both arm parts of (20) so that it can be inserted, and a convex part (25) and a projecting part (30) are provided on each of the arm parts of the first part (20). The projecting portion (25) is formed so as to face each other on the inner side of both arm portions, and is formed so as to be able to be fitted into the thin hole (9A) of the knob portion (9). Is projected in the width direction of the arms on the base side of both arms and convex There is disclosed a handle lock device formed so as to be fitted into the opening (4A) and to be brought into contact with the edge of the opening (4A) when (25) is fitted into the thin hole (9A). Yes. Accordingly, it is possible to provide a handle lock device that can lock the handle without a lock hole in the knob.

Further, in the handle lock device as shown in Patent Document 2, when the conventional handle lock device uses a padlock, a circuit breaker must be provided with a separate plate for locking the circuit breaker. The present invention has been made in view of the fact that the size of the device is increased, and it is an object of the present invention to make it possible to reliably lock the handle without increasing the size of the circuit breaker.

That is, as a lock member that is attached so as to cover the handle (2) in the open position or the closed position from above, so that the handle (2) cannot be operated from the position.
The lock member (3) is formed of a synthetic resin in a cap shape, and has a base (3a) whose plan view is substantially the same shape as the opening (5), and is projected upward from the base (3a). The thing provided with the fitting part (3b) is disclosed.

Specifically, on the rear end surface of the base (3a), a locking piece (6) is provided projecting rearward, which sinks under the edge of the opening (5) and locks to the main body case (1a). The fitting portion (3b) is formed in a cylindrical shape into which the operation knob (2a) of the handle (2) can be fitted. A U-shaped notch (hole exposed portion) (7) that opens upward is provided on the front surface of the fitting portion (3b), and is locked when attached to the handle (2) of the lock member (3). The hole (20) is exposed. Further, a U-shaped notch (hole exposed portion) (8) that opens upward is also provided on the rear surface of the fitting portion 3b, and a hook projecting upward is provided in the notch (8). A stop piece (hanging portion) (9) is integrally provided. The latching piece (9) is formed thinner than the rear surface of the fitting portion (3a), and can be easily folded by a finger or the like. Further, the front surface of the latch piece (9) is provided with a claw portion (9a) that latches on the lock hole (20) when the lock member (3) is attached to the handle (2). is there.

While the through hole is formed in the operation knob portion of the handle, by providing the hole exposed portion that exposes the through hole in the fitting portion of the locking member composed of the fitting portion and the base, in the mounted state of the lock member, By locking the through hole exposed in the hole exposed portion, it is possible to provide a handle lock device that can securely lock the handle without increasing the size of the circuit breaker.

JP-A-9-270224 (FIG. 1) Japanese Unexamined Patent Publication No. 2010-160924 (FIG. 1)

As described above, according to Patent Document 1 and Patent Document 2, it is possible to securely lock the handle without locking up the handle lock device and the circuit breaker, which can eliminate the need for post-processing on the handle. The handle lock device which can do is disclosed.
However, in any case, when the handle lock is not performed, it is necessary to remove the handle lock device from the operation handle, collect the removed handle lock device, and store it in another place. In addition, when inspecting circuit breakers and connection wiring, etc., when there is a situation where it is desired to suppress the operation of the operation handle suddenly, the operation handle cannot be suppressed and the operation is interrupted if the handle lock device is not held. It was impossible to respond when it was urgent.

Therefore, the present invention has been made in view of the above problems, and when there is a need to suppress operation of the operation handle, operation control of the operation handle can be suppressed on the spot without having a handle lock device. It is an object of the present invention to provide a handle lock device that can be performed, and when the operation handle operation need not be suppressed, the operation lock can be released without collecting the handle lock device. .

The handle lock device according to the present invention is configured to solve the above-described problems,
A handle lock device that is mounted on an operation knob of a circuit opening / closing operation handle that protrudes from the opening of the container constituting the outline of the circuit breaker and suppresses or cancels the opening / closing operation of the circuit A U-shaped handle holding portion that surrounds an operation knob portion of the operation handle from a side, and an inner side of the U-shaped cross-section toward the open end of the U-shaped cross-section. An insertion protrusion that projects from a protrusion provided on a side of the operation knob, and is formed integrally with the handle holding part, and is attached to the operation knob of the operation handle. A base portion that engages with the periphery of the opening of the body and restricts the movement of the operation handle in the opening / closing operation direction, and reverses the mounting direction of the handle lock device to the operation knob, thereby Controls opening and closing operations And it states that, and a state to release inhibiting closing operation of the circuit is characterized in that it is freely switched.

According to such a configuration,
The handle lock device is attached to the operation handle in a state in which the opening / closing operation of the circuit is suppressed and a state in which the opening / closing operation of the circuit is suppressed / released by reversing the mounting direction of the handle lock device to the operation knob. When the handle is not locked, it is not necessary to remove the handle lock device from the operation handle and store it in a separate location. When a request to be made arises, it is possible to provide a handle lock device that can lock the handle even when the handle lock device is not held and can quickly suppress and release the operation handle. .

Further, the handle holding portion is formed with two extension portions each having an open end portion having a U-shaped cross section extending in the projecting direction of the insertion protrusion, and the extension portion includes the open end portion. A mouth opening restricting portion that restricts the mouth opening of the portion may be formed.

According to such a configuration, the opening of the open end portion having the U-shaped cross section is restricted by the opening restriction portion, so that it can be firmly attached to the operation knob, and the operation handle can be operated from the outside. Even in this case, the handle lock device can be securely locked without being detached from the operation handle.

Moreover, you may form the said insertion protrusion in the approximate center part in the protrusion direction of the operation knob part which protrudes and is provided outside the said container body.

According to this configuration, since the insertion protrusion is formed at a substantially central portion in the protruding direction of the operation knob provided to protrude outside the body, the mounting direction of the handle lock device to the operation knob is reversed. Even in this case, the position of the insertion protrusion with respect to the knob can be formed at the same position, and while the handle lock device is attached to the operation knob, the state of suppressing the opening and closing operation of the circuit and the opening and closing operation of the circuit are controlled. It is possible to switch between the two states, the state of releasing the suppression.

As described above, according to the present invention, when there is a need to suppress operation of the operation handle, it is possible to suppress operation of the operation handle on the spot without having the handle lock device. When there is no need to suppress the operation of the operation handle, it is possible to provide a handle lock device that can release the suppression of the operation without collecting the handle lock device.

The top view of the handle lock apparatus which shows 1st Embodiment is shown. The side view of the handle lock apparatus concerning the embodiment is shown. The figure which mounted | wore the circuit breaker with the handle | steering-wheel lock apparatus based on the embodiment is shown. The figure which removed the handle | steering-wheel locking apparatus which concerns on the embodiment from the circuit breaker is shown. The attachment figure at the time of canceling | released suppression of handle operation by the handle lock apparatus which concerns on the embodiment is shown. The figure in the case of mounting | wearing the operation handle so that the handle | steering-wheel locking apparatus which concerns on the same embodiment cancels | releases suppression of handle operation is shown. The top view of the handle lock apparatus which shows 2nd Embodiment is shown. The side view of the handle lock apparatus concerning the embodiment is shown. The perspective view of the handle lock device concerning the embodiment is shown. The figure which mounted | wore the circuit breaker with the handle | steering-wheel lock apparatus based on the embodiment is shown. The figure which removed the handle | steering-wheel locking apparatus which concerns on the embodiment from the circuit breaker is shown. The attachment figure at the time of canceling | released suppression of handle operation by the handle lock apparatus which concerns on the embodiment is shown. The figure in the case of mounting | wearing the operation handle so that the handle | steering-wheel locking apparatus which concerns on the same embodiment cancels | releases suppression of handle operation is shown. The figure at the time of attaching a padlock to the handle lock device concerning the embodiment is shown. The handle lock apparatus in a prior art example is shown. The handle lock apparatus in a prior art example is shown.

Next, an embodiment of the present invention will be described in detail with reference to FIGS.

First, a first embodiment will be described with reference to FIGS. This embodiment is attached to an operation knob of a circuit opening / closing operation handle provided so as to protrude from the opening of the body constituting the outline of the circuit breaker to suppress or suppress the circuit opening / closing operation. This is a handle lock device to be released.

The circuit breaker to which the handle lock device 10 according to the present invention is applied is intended for various circuit breakers such as a circuit breaker used as a main switch of a distribution board or a branch switch. The description will be made using a three-pole circuit breaker 1 used as a main switch of the electrical board.

The circuit breaker 1 is composed of a case 3 and a cover 2 to form an outer shell. An opening 21 is formed in the cover 2, and an operation knob of the operation handle 4 that opens or closes the contact opening / closing mechanism by acting on a contact opening / closing mechanism provided in the circuit breaker 1 from the opening 21. The part 41 is provided so as to protrude to the outside.

At one end of the container, a power supply side terminal portion 31 of each pole connected to a bus provided on a residential distribution board and supplied with power is provided side by side, and the other end is supplied with power on the load side. Load side terminal portions 32 of the respective poles for supply are arranged in parallel. In addition, when an overcurrent or a short-circuit current occurs in the electrical circuit to which the circuit breaker 1 is connected, the inside of the container body acts on the contact opening / closing mechanism to release the contact opening / closing mechanism and open the contact. A tripping device for opening the electrodes is provided.

The operation knob 41 of the operation handle 4 is rotationally driven in a power-load side direction connecting the power-side terminal portion 31 and the load-side terminal portion 32, and opens or closes the contact opening / closing mechanism. Further, the direction in which the terminals of the poles are arranged in parallel, that is, the direction orthogonal to the direction in which the operation knob 41 rotates, is the width direction of the circuit breaker 1, and the operation knob 41 is the opening 21 of the cover 2. The side protruding from the front is the front side.

In the operation knob 41 of the operation handle 4, a recess 42 is formed on the side in the width direction to prevent sink marks during molding. The handle lock device 10 is mounted so as to cover the operation knob 41 of the circuit breaker 1 on the front side of the cover 2, thereby suppressing the rotation of the operation knob 41 in a predetermined mounting state. Or the suppression of rotation is canceled.

The structure of the handle lock device 10 is such that its outer shape is integrally formed of a resin material, and a base portion 13 and a handle holding portion 11 having a U-shaped cross section standing from the base portion 13. It has.

The base portion 13 and the U-shaped handle holding portion 11 having a U-shaped cross section are formed at a predetermined angle. The predetermined angle corresponds to the power-load side direction in FIG. It is formed substantially equal to the angle formed by the protruding direction from the opening 21 when the operation knob 41 is in the closed position. That is, the U-shaped handle holding portion 11 is erected along the protruding direction of the operation knob 41 protruding from the opening 21.

The length in the standing direction of the handle holding portion 11 having a U-shaped cross section is formed to be approximately equal to the length of the operation knob 41 protruding outside the body. Further, the length in the width direction is formed so that the length from the inside of the U-shaped cross section to the open end of the U-shaped cross section is substantially equal to the length in the width direction of the operation knob 41 of the operation handle 4. The length of the handle lock device 10 in the width direction is about the thickness of the handle holding portion 11 having a U-shaped cross section in the width direction of the knob 41. The operation knob 41 is surrounded by the handle holding portion 11 having a U-shaped cross section from the side, that is, from the width direction.

The handle holding portion 11 having a U-shaped cross section has a substantially central portion in the projecting direction of the operation knob 41 in the width direction on the inner side of the U-shaped cross section, and has a U-shaped cross section. A substantially rod-shaped insertion protrusion 12 is formed so as to protrude in the direction of the open end. The projecting length of the insertion protrusion 12 is about ¼ of the length of the open end from the inside of the U-shaped cross section. When the handle lock device 10 is mounted on the knob 41, the insertion protrusion 12 is used by engaging with a recess 42 formed on the side of the knob 41 of the operation handle 4. This is to correspond to both of the case where it penetrates in the width direction of 41 and the case where it is provided halfway without penetrating.

More specifically, the height in the protruding direction of the handle holding portion 11 having a U-shaped cross section is more specifically the root portion (upper portion) of the handle holding portion 11 having a U-shaped cross section from the base 13. The distance L1 from c) in the figure to the front side (a part) of the insertion protrusion 12 and the cover side of the insertion protrusion 12 from the protruding end part (d in the figure) of the U-shaped handle holding part 11 The distance L2 to the portion b) is formed substantially equal.

A slope portion 14 that is a thick portion is provided at a connecting portion between the base portion 13 and the handle holding portion 11 having a U-shaped cross section, and the strength of the handle lock device 10 is improved. Further, on the back side when viewed from the front side of the base part 13, a locking part 131 that engages with the peripheral part on the load side terminal part 32 side of the opening part 21 is provided protrudingly. 3, when the handle lock device 10 is mounted on the knob 41, it engages with the peripheral edge of the opening 21.

Next, a case where the handle lock device 10 is attached to the circuit breaker 1 to suppress the opening / closing operation of the circuit and a case where the opening / closing operation of the circuit is suppressed and released will be described.

The handle lock device 10 takes two states, a state in which the opening / closing operation of the circuit is suppressed and a state in which the opening / closing operation of the circuit is suppressed and released according to the mounting state of the knob 41.

FIG. 3 shows a mounting state in which the circuit opening / closing operation is suppressed, and FIG. 5 shows a mounting state in which the circuit opening / closing operation is released.

First, the state which suppresses the opening / closing operation of a circuit is demonstrated using FIG. 3, FIG. When restraining the opening / closing operation using the handle lock device 10, the base portion 13 side is opposed to the handle 2 in the direction of the cover 2 with respect to the handle holding portion 11 having a U-shaped cross section. Install it. At the time of mounting, the handle lock device 10 is inserted from the side of the knob portion so that the opening direction of the U-shaped cross section and the width direction of the knob portion 41 substantially coincide.

When the handle holding part 11 having a U-shaped cross section is inserted into the knob 41, the insertion protrusion 12 formed on the inner side of the U-shaped cross section is gradually inserted into the recess 42 of the knob 41. Go. Then, when the side of the knob 41 is inserted into the inside of the U-shaped cross section, the knob 41 is inserted from the side by the handle holding section 11 having a U-shaped cross section. At the same time, the base portion 13 is disposed to face the front side of the cover 2, and at the same time, the locking portion 131 is fitted and engaged with the peripheral edge portion of the opening portion 21, so that the knob portion of the handle lock device 10 41 is completed.

In this state, when a force is applied to the knob 41 from the outside in the direction of opening from the closed position, that is, the power source-load side, first, the load side of the handle holding unit 11 having a U-shaped cross section The wall portion (e in FIG. 2) receives a force in the power source-load side direction. And since the said insertion protrusion 12 is inserted in the recessed part 42 of the knob | pick part 41, the recessed part 42 and the insertion protrusion 12 engage, and the handle | steering-wheel holding | maintenance part 11 with a U-shaped cross section is a power-load side direction. To receive power. However, the force is received on the front surface side of the cover 2 by the base portion 13 integrally provided with the handle holding portion 11 having a U-shaped cross section, and at the same time, formed on the back side of the base portion 13. The engaging portion 131 engages with the peripheral portion of the opening portion 21, so that the power-load side force applied to the knob portion 41 is received, and the operation handle 4 is prevented from opening.

Next, a state in which the opening / closing operation of the circuit is released is described with reference to FIGS. When the opening and closing operation is suppressed and released using the handle lock device 10, the knob portion 41 is arranged with the handle holding portion 11 having a U-shaped cross section facing the base portion 13 in the direction of the cover 2. I will put it on. At the time of mounting, the handle lock device 10 is inserted from the side of the knob portion so that the opening direction of the U-shaped cross section and the width direction of the knob portion 41 substantially coincide.

When the handle holding part 11 having a U-shaped cross section is inserted into the knob 41, the insertion protrusion 12 formed on the inner side of the U-shaped cross section is gradually inserted into the recess 42 of the knob 41. Go. Then, when the side of the knob 41 is inserted into the inside of the U-shaped cross section, the knob 41 is inserted from the side by the handle holding section 11 having a U-shaped cross section. Then, the mounting of the handle lock device 10 to the knob 41 in a state where the opening / closing operation of the circuit is released is suppressed.

In this state, when a force is applied to the knob 41 from the outside in the direction of opening from the closed position, that is, in the direction of the power source-load side, the handle holding portion 11 having a U-shaped cross section is connected to the power source-load side. Receive direction force. However, unlike the state in which the opening / closing operation of the previous circuit is suppressed, the force is not received on the front surface side of the cover 2 by the base portion 13, so that the operation handle 4 is bent to the force in the power source-load side direction and the closed position It rotates in the direction to open the circuit.

As described above, by reversing the mounting direction of the handle lock device 10 with respect to the knob 41, a state in which the opening / closing operation of the circuit is suppressed and a state in which the opening / closing operation of the circuit is suppressed and released are provided to be switchable. be able to.

Even when the mounting direction of the handle lock device 10 is reversed with respect to the knob 41, as described above, the height of the handle holding unit 11 having a U-shaped cross section in the protruding direction is The distance L1 from the root part where the U-shaped handle holding part 11 is erected from the base part 13 indicated by c in 2 to the front side a part of the insertion protrusion 12, and the cross section indicated by d in the figure The distance L2 from the protruding end portion of the U-shaped handle holding portion 11 to the cover side b portion of the insertion protrusion 12 is formed to be substantially equal, so that the insertion protrusion 12 and the knob 41 are formed. The positional relationship with respect to the recess 42 does not change, and the handle lock device 10 can be mounted in an inverted manner.

Next, a second embodiment will be described with reference to FIGS. In the present embodiment, the open end portion having a U-shaped cross section of the handle holding portion 11 in the first embodiment described above is extended in the projecting direction of the insertion protrusion 12 to form two extension portions. A handle lock device having a function of restricting opening of the open end portion in the extension portion.

Similar to the handle lock device 10 shown in the first embodiment, the handle lock device 100 shown in the second embodiment is provided so as to protrude from the opening of the vessel constituting the outline of the circuit breaker to the outside of the vessel. It is attached to the operation knob of the circuit opening / closing operation handle to suppress or release the circuit opening / closing operation. The same applies to the applied circuit breaker.

The structure of the handle lock device 100 includes a base portion 130 and a U-shaped handle holding portion 110 which are the basic configuration of the handle lock device according to the present invention, and the base portion 130 and the cross section. The insertion protrusion 120 is formed on the inner side of the U-shaped cross section of the U-shaped handle holding part 110 in that the U-shaped handle holding part 110 has the predetermined angle. The points are equivalent.

On the other hand, in the handle holding portion 110 having a U-shaped cross section in the second embodiment, two extensions formed to extend in the protruding direction of the insertion protrusion 120 at the open end portion having a U-shaped cross section. Portions 111a and 111b are formed. Through holes 111a1 and 111b1 are provided on the surfaces of the extension portions 111a and 111b facing each other so as to face each other. The extension portions 111a and 111b are provided with a large thickness in the direction in which the extension portions 111a and 111b face each other, so that the distance between the open end portions having a U-shaped cross section becomes narrow at the extension portions 111a and 111b. Is formed.

Further, the thick portion is formed so that the distance between the thick portions gradually increases toward the open end portion, and in the opposite direction, the thick portion on the extension portion 111b side is formed on the operation handle 4. The thick part on the side of the extension 111a is provided in a sloped shape with a corner in the open end direction. This is for making it easy to remove the handle lock device 100 by forming the slope shape. This is because the extension portion on the 111b side may also be formed in a sloped shape with a corner lowered toward the open end portion, so that an improvement in removal performance can be expected.

Moreover, in the base part 130, the length of the power source-load side direction is provided longer than that of the first embodiment, and a bulge part 131 formed in a part swelled in the width direction is provided. ing.

The case where the handle lock device 100 formed in this way is attached to the circuit breaker 1 to suppress the opening / closing operation of the circuit and the case where the opening / closing operation of the circuit is suppressed and released are described. To do. As in the first embodiment, the handle lock device 100 has two states, a state in which the opening / closing operation of the circuit is suppressed and a state in which the opening / closing operation of the circuit is suppressed and released according to the attachment state to the knob 41. Take.

FIG. 10 shows a mounting state in which the circuit opening / closing operation is suppressed, and FIG. 12 shows a mounting state in which the circuit opening / closing operation is released.

First, the state which suppresses the opening / closing operation of a circuit is demonstrated using FIG. 10, FIG. When the handle lock device 100 is used to suppress the opening / closing operation, the base portion 130 side is opposed to the cover 2 with respect to the handle holding portion 110 having a U-shaped cross section, and the knob portion 41 is arranged. Install it. At the time of mounting, the handle lock device 100 is inserted from the side of the knob portion so that the opening direction of the U-shaped cross section and the width direction of the knob portion 41 substantially coincide. At this time, a thick portion of the extension portion is formed at the open end portion, but the interval between the extension portions gradually increases toward the open end portion. If it inserts from the width direction, it can mount | wear without disturbing insertion by deform | transforming so that a thick part may spread gradually.

When the handle holding portion 11 having a U-shaped cross section is inserted into the knob 41, the insertion protrusion 120 formed on the inner side of the U-shaped cross section is gradually inserted into the recess 42 of the knob 41. Go. Then, when the side of the knob 41 is inserted into the inside of the U-shaped cross section, the knob 41 is inserted from the side by the handle holding section 110 having a U-shaped cross section. At the same time, the base portion 130 is disposed to face the front surface side of the cover 2, and at the same time, the locking portion 1310 is fitted and engaged with the peripheral portion of the opening portion 21, so that the handle lock device 100 is engaged. 41 is attached.

In this state, the knob 41 is surrounded by the U-shaped inner surface of the handle holding portion 110 and the surface of the thick-walled portion facing the insertion protrusion 120, and further, the through-hole portion 111a1. , 111b1 is provided with a fixed shaft penetrating the opening end. As a result, the handle lock device attached to the knob 41 is restricted from moving in the width direction by the fixed shaft, and the engagement between the insertion protrusion 120 and the recess 42 of the knob 41 is prevented from being disengaged. Therefore, it will not come off the knob 41. Even when a force is applied to the knob 41 from the outside not only in the direction of the power source-load side but also in the width direction or the diagonal direction, the disengagement due to opening of the open end of the handle holding portion 110 having a U-shaped cross section In addition, detachment caused by the bending of the handle lock device 100 itself can be suppressed by the fixed shaft, and the attached state can be more reliably maintained.

Next, a state in which the opening / closing operation of the circuit is released is described with reference to FIGS. When the opening and closing operation is suppressed and released using the handle lock device 100, the knob 41 is made with the handle holding part 110 having a U-shaped cross section facing the base part 130 in the direction of the cover 2. I will put it on. At the time of mounting, the handle lock device 100 is inserted from the side of the knob portion so that the opening direction of the U-shaped cross section and the width direction of the knob portion 41 substantially coincide.

When the handle holding part 110 having a U-shaped cross section is inserted into the knob 41, the insertion protrusion 120 formed on the inner side of the U-shaped cross section is gradually inserted into the recess 42 of the knob 41. Go. Then, when the side of the knob 41 is inserted into the inside of the U-shaped cross section, the knob 41 is inserted from the side by the handle holding section 110 having a U-shaped cross section. Then, the handle lock device 100 is attached to the knob 41 in a state in which the opening / closing operation of the circuit is suppressed and released.

The knob portion 41 is surrounded by the U-shaped inner surface of the handle holding portion 110 and the surface of the thick portion facing the insertion protrusion 120, but is further open to the through-hole portions 111a1 and 111b1. A fixed shaft for restricting the opening of the end portion is disposed through. As a result, the handle lock device attached to the knob 41 is restricted from moving in the width direction by the fixed shaft, and the engagement between the insertion protrusion 120 and the recess 42 of the knob 41 is prevented from being disengaged. Therefore, it will not come off the knob 41. As described above, even when a force is applied to the knob 41 from the outside, not only in the power source-load side direction but also in the width direction and the diagonal direction, the open end portion of the handle holding portion 110 having a U-shaped cross section is provided. The disengagement due to opening of the mouth and the disengagement due to bending of the handle lock device 100 itself can be suppressed by the fixed shaft, and the attached state can be more reliably maintained.

In this state, when a force is applied to the knob 41 from the outside in the direction of opening from the closed position, that is, in the direction of the power source-load side, the handle holding unit 110 having a U-shaped cross section is connected to the power source-load side. Receive direction force. However, unlike the state in which the opening / closing operation of the previous circuit is suppressed, the force is not received on the front surface side of the cover 2 by the base portion 130, so that the operation handle 4 is bent to the force in the power source-load side direction and the closed position It rotates in the direction to open the circuit.

As described above, by reversing the mounting direction of the handle lock device 100 with respect to the knob 41, a state in which the opening / closing operation of the circuit is suppressed and a state in which the opening / closing operation of the circuit is suppressed are provided to be switchable. be able to.

FIG. 14 shows an example in which a padlock 20 is applied as the fixed shaft. The vine of the padlock 20 is used as a fixed shaft, and a padlock is used in which the length of the linear portion of the vine is substantially equal to the distance outside the open end of the U-shaped handle holder 110 of the handle lock device 100. This effectively regulates the opening of the mouth.

The bulging portion 131 in the base portion 130 is disposed so as to face the padlock 20 when the padlock 20 is attached, and prevents the padlock 20 from hitting the surface of the cover 2 and causing damage.

In addition, this invention is not limited to the said embodiment, A various change is possible in the range which does not deviate from the summary of this invention.

For example, the protruding shape of the insertion protrusions 12 and 120 is a substantially rod-shaped protrusion in the embodiment, but may be a prism or a columnar shape, or a shape that is tapered toward the tip of the protrusion.
In addition to the padlock 20, the fixed shaft may be a fastening tool composed of a general screw and nut, or a fastening tool using a speed nut used for the purpose of improving the workability of fastening. May be.
Further, the position where the bulge portion 131 is formed is provided at a position covering the front side of the operation check button of the circuit breaker, and the operation check button is operated in a state in which the handle lock device 100 is mounted to operate the circuit breaker. You may form so that this may be suppressed.

DESCRIPTION OF SYMBOLS 1 Circuit breaker 2 Cover 21 Opening part 3 Case 31 Power supply side terminal part 32 Load side terminal part 4 Knob part 41 Recessed part 10 Handle locking device 11 U-shaped handle holding part 12 Insertion protrusion 13 Base part 131 Engagement Stop portion 14 Slope portion 100 Handle lock device 110 U-shaped handle holding portion 120 Insertion protrusion 130 Base portion 1310 Locking portion 111a Extension portion 111b Extension portion 111a1 Through hole portion 111b1 Through hole portion

Claims (3)

A handle lock device that is mounted on an operation knob of a circuit opening / closing operation handle that protrudes from the opening of the container constituting the outline of the circuit breaker and suppresses or cancels the opening / closing operation of the circuit Because
A handle holding portion having a U-shaped cross-section surrounding the operation knob in the operation handle from the side;
An insertion protrusion that protrudes in the direction of the open end of the U-shaped cross-section inside the U-shaped cross-section and engages with a recess provided on the side of the operation knob,
A base that is integrally formed with the handle holding portion and engages with the peripheral edge of the opening of the container while being attached to the operation knob of the operation handle, thereby restricting the movement of the operation handle in the opening / closing operation direction. With
By reversing the mounting direction of the handle lock device to the operation knob,
A handle lock device, wherein a state in which the opening / closing operation of the circuit is suppressed and a state in which the opening / closing operation of the circuit is suppressed and released are freely switchable.
In the handle holding part,
Two extension portions are formed in which the open end portion of the U-shaped cross section extends in the protruding direction of the insertion protrusion,
2. The handle lock device according to claim 1, wherein the extension portion is formed with a through-hole portion through which a fixed shaft that restricts opening of the open end portion is inserted.
3. The handle lock device according to claim 1, wherein the insertion protrusion is formed at a substantially central portion in a protruding direction of an operation knob provided to protrude outside the container body.

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