KR920003087Y1 - Apparatus for controlling handle of a breaker for distributing power - Google Patents

Abstract

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Description

Handle operation device of wiring breaker

1 and 2 are perspective views each showing an embodiment of the present invention.

3 is an exploded perspective view showing the embodiment shown in FIGS. 1 and 2 together with a circuit breaker.

4 and 5 are side views for explaining the operation of Figs.

6 is a perspective view showing a switchboard to which the embodiments shown in FIGS. 1 and 2 are applied.

7 is a perspective view showing a handle operating device of a conventional circuit breaker.

The present invention relates to a handle operating device of a circuit breaker mounted on a switchboard installed in a control center.

In general, the operation of opening and closing of the wiring breaker mounted inside the switchboard is performed by operating the handle of the handle operating device provided on the front of the switchboard. In this state, the handle is rotated to turn off the wiring breaker and the front of the switchboard is turned off. When opening the door, the rotation of the handle is constrained so that the wiring breaker cannot be turned ON. Also, when the front door is closed and the door is locked in the closed position, the handle is released and the wiring breaker is turned ON. Consists of.

As an apparatus of this kind, for example, the one described in Fig. 59-9458 shown in FIG. 7 is a perspective view of the handle operating device viewed from the rear of the frame to which it is attached.

In FIG. 7, the fastening member 3 provided to be pivotable through the support shaft 2 at the rear of the frame 1 has a solid line when the circuit breaker (not shown) is in the OFF state and the front door of the switchboard is open. In the position shown, the ring 3a provided at one end of the fastening member 3 is fastened to the fastening portion 5a of the cam plate 5 which is integrally rotated with the handle 4 provided at the front of the frame 1. This prevents the cam plate 5 from rotating in the direction indicated by the arrow A from the position shown.

As a result, the rotation of the drive member 6 interlocked with the cam plate 5 is also prevented, and the handle of the wiring breaker (not shown) inserted in the butterfly hole 6a provided in the drive member 6 is turned from the OFF position to the ON position. It is not switched to

When the front door is closed, the interlock piece 7 protruding to the rear of the front door moves to the position indicated by the two-dot chain line in the concentration, and the other end of the fastening member 3 is connected to the fastening ring 7a of the front end. Protrusions 3b provided on the door are locked to lock the front door to the closed position.

In connection with this, the fastening member 3 rotates in the direction of arrow B against the reaction force of the torsion coil spring 9 mounted on the support shaft 8 of the drive member 6 during the fastening of the protrusion 3b. The ring 3a is released from the fastening portion 5a of the cam plate 5. As a result, the cam plate 5 is rotatable in the direction of the arrow A so that the wiring breaker can be switched from the OFF to the ON position through the drive member 6 by turning the knob 4.

However, in the above-described configuration, since the cam plate 5 and the drive member 6, which are independent parts, are used as the transmission mechanism for switching the rotation operation of the handle 4 by the operation handle of the wiring breaker, the steering wheel operating device The number of parts was increased and the number of assembly work was high.

An object of the present invention is to provide a handle operation device for a circuit breaker that can reduce the number of parts to reduce the effort during assembly.

In the present invention, the unit installed in the unit room of the switchgear which is opened and closed by a door having an interlocking piece, the frame attached to the unit, and the handle and the frame provided to be rotatable to the frame are rotatably provided by the handle. A driving member which is rotated to operate the operation handle of the circuit breaker, and is connected to the driving member via a spring member so as to be interlocked with its reciprocating rotation, and is rotated between the first and second positions by the linkage and faces the second position. A circuit breaker comprising a fastening member which can be fastened to the interlock piece for the door lock, and which only permits passage of the interlock piece at the first position, and an ON operation blocking means which cooperates with the fastening member to block the rotation of the handle. In the handle operation device of the ON operation blocking means is a fastening member which is fastened at the fastening member and its second position, Fastening and characterized in that its forming position with the Sikkim formed directly on the parts of the handle corresponding to the OFF position of the circuit breaker.

Since the fastening member is fastened to the interlock piece when the door is closed, it is not fastened to the fastening part and the rotation of the handle is not regulated. Therefore, opening and closing of the circuit breaker can be arbitrarily performed through the drive member which is interlocked by operating a handle.

When the door is opened, the fastening member is spaced apart from the interlock piece so that it can be interlocked with the drive member. However, when the drive member is rotated by operating the handle, the fastening member interlocked with the handle is fastened to the fastening part and the rotation of the handle is regulated, so that the circuit breaker cannot be switched to the position where the door was opened.

Therefore, for example, if this position is set to the OFF position of the circuit breaker, the wiring breaker cannot be switched to the other ON position when the door is opened, thereby ensuring safety.

The fastening part is fitted to the handle itself and does not require any extra parts.

Hereinafter, an embodiment of the present invention will be described with reference to FIGS. 1 to 6.

In FIG. 6, the wiring board 21 provided in the control center or the like is provided with a plurality of compartments 21a. Each unit 23 is housed so that entry and exit are possible.

The front of each unit room 21a is equipped with the door 22 so that opening and closing using a hinge etc. is possible.

The door 22 is attached with an interlock piece 40 having a fastening ring 40a at the tip described later.

In the unit 23, a wiring breaker (not shown) is accommodated, and a handle operating device 25 for operating the wiring breaker is provided on the front surface.

Next, the handle operating device 25 will be described in detail with reference to FIGS. 1 and 2 showing perspective views seen from the back and front, and FIG. 3 showing an exploded perspective view showing the circuit breaker.

The frame 26 formed in the substantially c-shape in FIGS. 1 to 3 is attached to the frame of the unit 23 by the edge of the c-curve further bent, which is the main configuration of the handle operating device 25. The member is mounted.

The frame 26 is formed with a cylindrical portion 27 having a stage formed at a central portion thereof, and a side wall 26a having an elongated hole 28 is formed at one side thereof.

The cylindrical portion 27 is configured to be rotatable from a front surface of the frame 26 by a handle 29 formed in the shape of a pot lid having a disc portion 29a whose diameter is stepwise reduced.

On the outer circumferential portion of the disc portion 29a of the handle 29, long grooves 29c are formed at intervals in the circumferential direction, and the pin 30 fixed through the small hole 27a provided in the cylindrical portion 27 is provided. It is inserted into this long groove 29c. The position where the long groove 29c is formed in the disc portion 26a and the length of the length thereof do not fall off the handle 29 from the cylindrical portion 27, and the long groove 29c hits the pin 30 at both ends, respectively. The rotation range of the handle 29 is set so as to be regulated between angles ranging from the position of "ON" shown in FIG. 2 to "RESET" via "TRIP" and "OFF".

In addition, the handle 29 is provided with a pin 29b at an eccentric position of the rear surface of the disk portion 29a, and a fastening portion 31 is provided on the outer circumference of the disk portion 29a by cutting a part of it into a substantially c-shape. have.

A drive member 32 is connected between the handle 29 and the operation handle 24a of the wiring breaker 24 to connect both of them.

The drive member 32 is formed by bending the plate into approximately C-shape to form two long and short pieces, bending the tip of the longer side to attach the approximately C-shaped portion, and attaching the shaft support hole 33 to the end of the L-shaped portion. Equipped. The shaft support hole 33 is inserted into the support shaft 34 provided on the rear surface of the frame 26 to support the drive member 32 so as to be rotatable.

On one short side of the drive member 32, a long hole 35 is provided, and on the long one side, a butterfly hole 36 is provided, and a protruding piece 32a protruding from an end in contact with the L-shaped portion is integrally formed. have. The pin 29b provided in the disc part 29a is inserted into the long hole 35, and the stop ring 37 is attached to the front-end | tip of the pin 29b. Moreover, the operation handle 24a of the wiring breaker 24 is inserted in the butterfly hole 36.

The cylindrical part 27 is provided with the support shaft 38 so that rotation is possible toward the back surface of the frame 26, and the intermediate part of the plate-shaped fastening member 39 is fixed to this support shaft 38. As shown in FIG. One end of the support shaft 38 is exposed to the surface side of the frame 26, and the groove 38a is provided so that the support shaft 38 can be rotated using a tool such as a driver.

One end of the fastening member 39 is inserted into an elongated hole 28 provided in the side wall 26a of the frame 26, and its tip is attached to the inner surface of the door 22 described above. The fastening ring 40sa of the front-end | tip of the interlock piece 40 shown by the dashed-dotted line in FIG. 1 can be caught.

The opposite end of the fastening member 39 has a hook-shaped ring portion 39b that can be caught by the fastening portion 31 of the handle 29.

In the middle of the fastening member 39, a bending piece 39a which is able to abut on the protruding piece 32a of the drive member 32 is provided.

A torsion coil spring 41 is mounted to the support shaft 34 and one end thereof is fixed to the bending piece 39a to apply a force to the fastening member 39 in the rotational direction indicated by arrow C in FIG.

I will explain this behavior next.

When the door 22 of the unit chamber 21a is opened and the wiring breaker 24 is turned OFF, the handle 29 is in the "OFF" position shown in FIG. In this state, as shown in solid lines in FIGS. 1 and 4, the fastening member 39 is given a rotational force in the direction of the arrow C by the spring force of the torsion coil spring 41 applied to the bending piece 39a. The bent piece 39a pushes the protruding piece 32a to hold it at the position shown.

Here, when the knob 29 is rotated toward the "ON" position, that is, in the direction of the arrow D, the drive member 32 also rotates in the same direction in conjunction with the rotation of the knob 29, and the position of the protruding piece 32a is It is moved to the right in FIG.

The bending piece 39a which abuts on the protrusion piece 32a is also pressed by the spring force of the torsion coil spring 41, and following this, the fastening member 39 rotates in the direction of arrow C. As shown in FIG. This causes the ring 39b to take the position indicated by the dashed-dotted line in FIG. 4 and enter the fastening portion 31 and engage with this one end, thereby preventing further rotation of the handle 29.

Therefore, in the state in which the door 22 is open, the handle 29 may be in the "OFF" position, but since the "ON" position cannot be rotated, the circuit breaker 24 is not introduced.

When the fastening member 39 is in the position shown by solid lines in FIGS. 1 and 4, that is, the door 22 is closed with the handle 29 in the "OFF" position shown in FIG. The interlock piece 40 fixed to 22 passes through the lower side of one end of the fastening member 39 and takes the position indicated by the dashed-dotted line in FIG. At this time, since the fastening ring 40a is not fastened with the fastening member 39, the door 22 may be freely opened and closed.

If the handle 29 is rotated toward the "ON" position, that is, in the direction of arrow D, with the door 22 closed, the driving member 32 is rotated in the same direction, and the fastening member 39 is also bent. 39a is pressed by the spring force of the torsion coil spring 41, and then starts to rotate in the direction of the arrow C. FIG. However, since the fastening member 39 is slightly rotated as shown in FIG. 5, one end thereof contacts the interlock piece 40 and further rotation is prevented, so that the hook 39b is fastened to the handle 29. It does not reach within 31.

Thus, the handle 29 is not restricted by rotation, and it is possible to set it to the position of "ON" or return it to the "OFF" position again.

In addition, when the handle 29 is set to the "ON" position, that is, when the circuit breaker 24 is ON, the fastening member 39 is fastened to the fastening ring 40a, so that the door 22 is locked in the closed position and is not opened. I can't.

That is, when the door 22 is closed, the handle 29 can perform all the turning operations, but when the handle 29 is in the "ON" position and the circuit breaker 24 is "ON", the door 22 ) Can not be opened.

According to this embodiment, since the fastening part of the fastening member is provided in a part of the handle for operation of the circuit breaker, the cam plate for forming the fastening part of the fastening member becomes unnecessary.

Instead of the above embodiment, a pin may be provided on the drive member as a connecting means between the handle and the drive member, and the handle may be provided with a long groove engaged with the pin.

In addition, the fastening portion is not limited to being formed by cutting a part of the outer circumference of the handle, but may be provided with a projection on the outer circumference of the handle.

According to the present invention, the interlock mechanism for preventing the insertion of the circuit breaker when the door of the switchboard unit room is opened is simplified, the number of parts as the handle operating device of the circuit breaker is reduced, and the workability at the time of assembly is improved. Excellent effect can be obtained.

Claims (1)

The unit 23 installed in the unit chamber 21a of the switchgear 21 which is opened and closed by the door 22 having the interlock piece 40, the frame 26 attached to the unit, and the frame is rotated. And a drive member 32 provided so as to be rotatable to the frame, the drive member 32 being rotated by the handle to operate the operation handle 24a of the circuit breaker 24, and the drive member. Is connected via a spring member 41 so as to interlock with the reciprocating rotation, and rotates between the first and second positions by the interlocking operation, and is capable of being fastened to the interlock piece for the door lock between the two and the second position. Further, a fastening member 39 which can be fastened to the interlock piece in a first position and only permits passage of the interlock piece in a first position, and an ON operation inhibiting means for interfering with the fastening member to prevent rotation of the handle. Wiring disconnection In the handle operating device of the present invention, the ON blocking means is a fastening portion 31 fastened to the fastening member and its second position, and the fastening portion is directly formed on the handle, and the formation position thereof is the OFF position of the circuit breaker. Handle operating device for a circuit breaker, characterized in that corresponding to the.