KR101699699B1 - Switch locking device for circuit breaker - Google Patents

Abstract

 According to an aspect of the present invention, there is provided a switch lock device for a circuit breaker, comprising: a switch rotatably hinged to a main body and having a rotation latching portion; a switch slidably coupled to one side of the switch, And a drive unit for slidingly moving the lock guide member. When the lock member is slid in one direction, the rotation hook is caught by the engagement protrusion to prevent rotation of the switch .

Description

[0001] DESCRIPTION [0002] SWITCH LOCKING DEVICE FOR CIRCUIT BREAKER [

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a switch lock device for a circuit breaker, and more particularly to a switch lock device for a circuit breaker in which the rotation of the switch is restricted by a lock guide member.

Circuit breakers are provided to disconnect the circuit in the event of a fault current in the transmission or distribution system or in the electrical circuit.

Among these circuit breakers, ACB (Air Circuit Breaker) is a circuit-breaker that uses air to extinguish an arc. By disconnecting the movable contact, which is actuated by a mechanical mechanism, to the stationary contactor, the circuit can be short- .

Here, the circuit breaker is provided with a separate switch for performing an operation of shorting or opening the circuit.

That is, by operating the switch, the user shorts or opens the circuit. In this case, it is necessary to prevent the safety accident and limit the operation of the switch as needed.

Therefore, there is a need for a circuit breaker that can limit the operation of the switch.

An object of the present invention is to provide a switch lock device for a circuit breaker capable of restricting the switch operation of the circuit breaker.

A switch lock device for a circuit breaker according to an embodiment of the present invention includes a switch rotatably hinged to a main body and having a rotation latch portion, a switch slidably coupled to one side of the switch, A locking guide member having a protruding locking protrusion and a driving unit for slidingly moving the locking guide member, wherein when the locking member slides in one direction, the rotation locking unit is caught by the locking protrusion, can do.

In the switch lock device for a circuit breaker according to an embodiment of the present invention, the switch may include a button portion and a connection portion extending from the button portion toward the main body and formed with a through hole and a through hole of the connection portion, And a rotation guide protrusion protruded from one side of the connection portion and inserted into the rotation guide hole of the main body.

In the switch lock device for a circuit breaker according to an embodiment of the present invention, the rotation latching portion may protrude from one side of the connection portion.

In the switch lock device for a circuit breaker according to an embodiment of the present invention, a protruding torsion spring coupling protrusion may be provided on one surface of the connection portion, and the through hole may be formed through the torsion spring coupling protrusion.

In the switch lock device for a circuit breaker according to an embodiment of the present invention, the torsion spring coupling protrusion may be provided with a torsion spring having one end contacting the main body and the other end contacting the switch to maintain the initial position of the switch have.

In the switch lock device for a circuit breaker according to an embodiment of the present invention, the lock guide member is provided with a guide hole, and the lock guide member can slide while the hinge shaft is inserted into the guide hole.

In the switch lock device for a circuit breaker according to an embodiment of the present invention, the latching jaw may slide and be provided between the connecting portion and the rotation latching portion.

In the switch lock device for a circuit breaker according to an embodiment of the present invention, the lock guide member may be provided with a drive contact portion which is in contact with the drive portion to receive power.

In the switch lock device for a circuit breaker according to an embodiment of the present invention, the lock guide member and the main body may be connected by a tension spring.

In the switch lock apparatus for a circuit breaker according to an embodiment of the present invention, the driving unit rotates to slide the lock guide member in one direction, and the tension spring applies an elastic force to slide the lock guide member in the other direction .

In the switch lock device for a circuit breaker according to an embodiment of the present invention, the driving part is provided with a larger turning radius in a direction opposite to the rotation direction, so that the locking guide member can be slidably moved according to the dome.

The switch lock device for a circuit breaker according to an embodiment of the present invention may include a lock guide member to limit the operation of the switch.

1 is a schematic perspective view of a switch lock device for a circuit breaker according to an embodiment of the present invention.
2 is a schematic exploded perspective view of a switch lock device for a circuit breaker according to an embodiment of the present invention.
3 is a schematic front view of a switch lock device for a circuit breaker in accordance with an embodiment of the present invention.
4 is a schematic side view of a switch lock for a circuit breaker in accordance with an embodiment of the present invention.
5 (a), 5 (b) and 5 (c) are schematic perspective views of the locking guide member according to an embodiment of the present invention, viewed from different angles.
6 is an enlarged view of a portion A in Fig.
Fig. 7 is an enlarged view of part A of Fig. 2 viewed from another angle.
8 is a schematic exploded perspective view of a switch according to an embodiment of the present invention.
9A is a front view of a switch lock device for a circuit breaker according to an embodiment of the present invention.
9B is a front view of the operation of the switch lock device for a circuit breaker according to the embodiment of the present invention.
10A is a front view of a switch lock device for a circuit breaker according to an embodiment of the present invention after operation.
10B is a side view after operation of the switch lock device for a circuit breaker according to an embodiment of the present invention.

Prior to the detailed description of the present invention, the terms or words used in the present specification and claims should not be construed as limited to ordinary or dictionary meanings, and the inventor may designate his own invention in the best way It should be construed in accordance with the technical idea of the present invention based on the principle that it can be appropriately defined as a concept of a term to describe it. Therefore, the embodiments described in the present specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention, and are not intended to represent all of the technical ideas of the present invention. Therefore, various equivalents It should be understood that water and variations may be present.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Note that, in the drawings, the same components are denoted by the same reference symbols as possible. Further, the detailed description of known functions and configurations that may obscure the gist of the present invention will be omitted. For the same reason, some of the elements in the accompanying drawings are exaggerated, omitted, or schematically shown, and the size of each element does not entirely reflect the actual size.

It is to be noted that the expressions such as the upper side, the lower side, the side face, etc. in the present specification are described based on the drawings in the drawings and can be expressed differently when the direction of the corresponding object is changed.

2 is a schematic exploded perspective view of a switch lock device for a circuit breaker according to an embodiment of the present invention, and FIG. 3 is a cross-sectional view of a switch lock device for a circuit breaker according to an embodiment of the present invention. FIG. 4 is a schematic side view of a switch lock device for a circuit breaker according to an embodiment of the present invention. FIG. 4 is a schematic front view of a switch lock device for a circuit breaker according to an embodiment of the present invention.

1 to 4, a switch lock apparatus 500 for a circuit breaker according to an embodiment of the present invention may include a switch 100, a lock guide member 200, and a driver 300.

The switch 100 is rotatably coupled to the main body 400 and may be rotated by the user up or down. The switch 100 may short-circuit or open a separate external device (not shown) connected to the switch lock device 500 for the circuit breaker.

As an example, the switch 100 may be provided with a close button for circuit shorting and an open button for opening the circuit.

The user can press the switch 100 to rotate it upward or downward, thereby shorting or opening the circuit.

The lock guide member 200 may be coupled to the switch 100 so as to restrict the operation of the switch 100. The locking guide member 200 can be coupled with the hinge shaft 130 of the switch 100 inserted into the guide hole 210 and can be prevented from being separated by the first stopper 10. [

The lock guide member is slidably coupled to one side of the switch 100 upwardly or downwardly, thereby limiting the rotational movement of the switch 100. [

For example, when the switch 100 is slid upward, the rotation of the switch 100 may be restricted. When the switch 100 is slid downward, the switch 100 is unlocked to be rotatable . Details of the operation of the switch 100 will be described later.

The locking guide member 200 can be slid by the driving unit 300. The driving unit 300 can slide the locking guide member 200 while being in contact with one side of the locking guide member 200.

For example, the driving unit 300 may contact the driving contact unit 230 of the locking guide member 200 to move the locking guide member 200 in one direction, and the surface contacting the driving contact unit 230 may be curved . Here, one direction may mean the direction in which the switch 100 is installed.

As the driving unit 300 rotates, the locking guide member 200 can be slid upward or downward. If the contact surface is curved, the locking guide member 200 can be smoothly moved.

In addition, the driving unit 300 may be manually operated by a key 310 as an example. That is, a key insertion groove (not shown) is provided on one side of the driving unit 300, and the user can move the locking guide member 200 by inserting the key 310 into the key insertion groove and rotating the key.

However, if the driving unit 300 is configured to reciprocate the locking guide member 200 upward and downward, various configurations commonly used in the technical field of the present invention can be adopted.

3 shows a state before the locking guide member 200 is moved. The driving unit 300 and the driving contact unit 230 are spaced apart from each other by a predetermined distance. The driving unit 300 and the driving contact unit 230 are in contact with each other. However, (In a clockwise direction with reference to Fig. 3).

On the other hand, the locking guide member 200 may be provided with a tension spring 240. The tension spring 240 may be connected at one end to the lock guide member 200 and at the other end to the main body 400 to improve the operation reliability of the lock guide member 200.

In other words, the locking guide member 200 can be returned to the initial position by the tension spring 240 when the driving unit 300 is retracted after the locking unit 200 is slid in one direction by the rotation of the driving unit 300. That is, the tension spring 240 can apply an elastic force to the locking guide member 200 in the other direction opposite to the one direction in which the driving unit 300 moves the locking guide member 200.

Hereinafter, a detailed configuration of the switch lock apparatus 500 for a circuit breaker according to an embodiment of the present invention will be described with reference to FIGS. 5 to 8. FIG.

5 (a), 5 (b) and 5 (c) are schematic perspective views of the locking guide member viewed from different angles according to an embodiment of the present invention

5 (a), 5 (b) and 5 (c), a locking guide member 200 according to an embodiment of the present invention includes a guide hole 210, a locking protrusion 220, and a driving contact portion 230 .

The guide holes 210 may be provided corresponding to the number of the switches 100 and may be provided on the upper side and the lower side of the lock guide member 200 on the basis of the embodiment shown in the drawing.

A first stopper 10 (see FIG. 1) is provided at an end of the hinge shaft 130 so as to be coupled to the hinge shaft 130 of the switch 100, (200) from detaching from the switch (100).

The locking guide member 200 is slidable in a state in which the hinge shaft 130 is inserted into the guide hole 210. Therefore, the shape of the guide hole 210 can determine the moving direction of the locking guide member 200.

For example, the guide hole 210 may be formed as a hole extending upward and downward, and the locking guide member 200 may slide upward and downward while being coupled to the switch 100.

The locking guide member 200 may be provided with a locking protrusion 220 and the locking protrusion 220 may protrude in a direction in which the rotation locking portion 121 of the switch 100 (see FIG. The stopping jaw 220 is engaged with the rotation stopping portion 121 (see Fig. 6) of the switch 100 when the lock guide member 200 moves in one direction, thereby preventing the switch 100 from rotating.

Hereinafter, referring to FIG. 3, when the locking guide member 200 is moved upward, the locking protrusion 220 is inserted into the rotation locking portion 121, As shown in Fig.

In addition, the locking guide member 200 may be provided with a driving contact portion 230 that is in contact with the driving portion 300 and receives power. The driving contact portion 230 may protrude from the locking guide member 200 in the direction in which the driving portion 300 is provided and the bottom of the driving contact portion 230 contacts the driving portion 300 to receive power.

However, the driving contact portion 230 is not always in contact with the driving portion 300, and may be contacted only when the user rotates the driving portion 300 to limit the rotation of the switch 100. [ Therefore, before the rotation of the driving unit 300, the driving contact unit 230 and the driving unit 300 may be spaced apart from each other by a predetermined distance.

FIG. 6 is an enlarged view of part A of FIG. 2, FIG. 7 is an enlarged view of part A of FIG. 2 viewed from another angle, and FIG. 8 is a schematic exploded perspective view of a switch according to an embodiment of the present invention.

6 to 8, the switch 100 according to an embodiment of the present invention may include a button unit 110, a connection unit 120, and a hinge shaft 130.

The button portion 110 may be exposed to the outside of the switch lock device 500 for the circuit breaker and may correspond to a portion directly contacted by the user. That is, the user can operate the switch 100 by applying pressure to the button unit 110 exposed to the outside.

The connection unit 120 may extend from the button unit 110 toward the main body 400 and may be rotatably coupled to the main body 400.

The connection portion 120 may include a torsion spring coupling protrusion 123 protruding from one surface thereof and a through hole 123a to which the hinge shaft 130 of the spring 100 is coupled is formed on the torsion spring coupling protrusion 123 . As an example, the through hole 123a may be provided through the torsion spring coupling protrusion 123. The hinge shaft 130 is coupled to the main body 400 through the through hole 123a so that the connecting portion 120 can be rotated with respect to the main body 400. [

The torsion spring coupling protrusion 123 may be provided with a torsion spring 124 which is in contact with the main body 400 at one end and contacts the switch 100 at the other end to maintain the initial position of the switch 100.

That is, after the user operates the switch 100, the torsion spring 124 applies an elastic force to the switch 100, so that the switch 100 can return to its original position.

A rotation latching part 121 may protrude from one side of the connection part 120. The rotation latching part 121 may protrude from one side of the connection part 120 in a direction in which the latching protrusion 220 is provided. For example, the rotation latching part 121 may protrude from the lower side of the connection part 120, have.

The rotation latching portion 121 can be engaged with the latching jaw 220 of the lock guide member 200 described above. Here, the latching jaw 220 may be provided between the connection part 120 and the rotation latching part 121. That is, when the user moves the locking guide member 200 upward to limit the driving of the switch 100, the locking protrusion 220 moves upward and moves between the connection portion 120 and the rotation locking portion 121 And can be brought into contact with the rotation latching portion 121.

Further, a rotation guide protrusion 122 may protrude from the connection part 120. The rotation guide protrusion 122 can determine the turning radius of the switch 100 in a state where the rotation guide protrusion 122 is inserted into the rotation guide hole of the main body 400.

The hinge shaft 130 can hinge the connection part 120 and the main body 400. That is, the connecting portion 120 can rotate with respect to the main body 400 in a state where the hinge shaft 130 is inserted into the through hole 123a.

The stopper fixing grooves 131 and 132 may be formed at one end of the hinge shaft 130. The first and second stoppers 10 and 20 are coupled to the stopper fixing grooves 131 and 132 to prevent the locking guide member 200 and the switch 100 from being separated from the hinge shaft 130.

The hinge shaft 130 is coupled to the main body 400 through the through hole 123a and the second stopper 20 is fixed to the second stopper fixing groove 132 of the hinge shaft 130. Accordingly, the connection part 120 is provided between the main body 400 of the hinge shaft 130 and the stopper 20, and is prevented from being separated.

The first stopper 10 is fixedly coupled to the first stopper fixing groove 131 of the hinge shaft 130 and the locking guide member 200 is fixed to the first stopper 10 of the hinge shaft 130, And is provided between the stoppers 20 to prevent them from being separated.

Hereinafter, the operation of the lock device 500 for a circuit breaker according to an embodiment of the present invention will be described.

FIG. 9A is a front view of a switch lock apparatus for a circuit breaker according to an embodiment of the present invention, FIG. 9B is a front view of the switch lock apparatus for a circuit breaker according to an embodiment of the present invention, FIG. 10B is a side view after operation of a switch lock device for a circuit breaker according to an embodiment of the present invention. FIG. 10A is a front view of the switch lock device for a circuit breaker according to an embodiment of the present invention.

9A and 9B, the switch 100 is rotatably provided before the switch lock device 500 for circuit breaker is driven.

That is, the switch 100 can rotate relative to the main body 400 with the hinge shaft 130 as a center axis, and the engaging jaw 220 can be rotated about the rotation radius of the rotation engaging portion 121 of the switch 100 Respectively.

Therefore, even when the switch 100 rotates, the rotation latching portion 121 can rotate without being interfered by the latching jaws 220. [ However, the range in which the switch 100 can be rotated can be determined by the rotation guide protrusion 122 as described above.

In this case, since the switch 100 has a restoring force with respect to the initial position by the torsion spring 124 provided on the switch 100, the switch 100 is rotated when the user makes contact with the switch 100, Return to the initial state.

As a result, the pre-drive switch 100 of the switch lock device 500 for circuit breaker can freely operate.

Referring to FIGS. 10A and 10B, when the user operates the driving unit 300, the driving unit 300 rotates to slide the locking guide member 200 upward.

At this time, a separate key 310 may be inserted into the driving unit 300, and the user may rotate the driving unit 300 using the key 310.

Here, the driving unit 300 may have a shape in which the turning radius of the driving unit 300 increases in the direction opposite to the rotation of the driving unit 300. Accordingly, when the driving unit 300 rotates, the locking guide member 200 can move upward.

The latching jaw 220 of the locking guide member 200 moves upward and contacts the rotation latching portion 121 of the switch 100 to rotate the switch 100. [ For smooth rotation of the switch 100, the outer surface of the latching part 121 may be provided as an inclined surface.

The switch 100 can be rotated in the counterclockwise direction by the latching jaw 220 with reference to Fig. 9B. However, the direction of rotation of the switch 100 can be changed according to design needs.

The stopping jaw 220 rotates the rotation stopping portion 121 to finally be disposed between the connection portion 120 and the rotation stopping portion 121 and maintains a state of being in contact with the rotation stopping portion 121. [

When the locking member 200 is moved upward, the locking protrusion 220 is disposed between the connection portion 120 and the rotation locking portion 121 and is located inside the rotation radius of the rotation locking portion 121 .

Therefore, when the stopping jaw 220 is moved upward, the rotation of the switch 100 is restricted and the operation is prevented.

The present invention is not limited to this and the user may first slide the lock guide member 200 in a state in which the switch 100 is rotated, It is also possible to do.

Then, when the user rotates the driving unit 300 in the opposite direction again, the locking guide member 200 moves downward, and the arrangement state of the switch 100 is again the same as in Figs. 9A and 9B.

Accordingly, the user can operate the driving unit 300 according to the need to limit the operation of the switch 100. [

While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, It will be apparent to those of ordinary skill in the art that such changes or modifications are within the scope of the appended claims.

100: switch 110: button portion
120: connection part 130: hinge shaft
200: locking guide member 210: guide hole
220: latching jaw 230:
240: tension spring 300:
400:

Claims (11)

A switch rotatably hinged to the body and provided with a rotation latch;
A locking guide member slidably coupled to one side of the switch and having a locking protrusion protruding in a direction in which the rotation locking portion is disposed; And
And a driving unit for slidingly moving the locking guide member,
Wherein when the lock guide member slides in one direction, the rotation latching portion engages with the engagement protrusion to prevent rotation of the switch.
The method according to claim 1,
The switch includes a button portion and a hinge shaft extending from the button portion toward the body and having a through hole formed therein and a through hole formed in the connection portion to hinge the connection portion and the main body, And a rotation guide protrusion which is inserted into the rotation guide hole of the switch cover.
3. The method of claim 2,
Wherein the rotation latching portion is protruded from one side of the connection portion.
3. The method of claim 2,
Wherein the connection portion has protruding torsion spring coupling protrusions formed on one surface of the connection portion, the through hole passing through the torsion spring coupling protrusion.
5. The method of claim 4,
Wherein the torsion spring coupling protrusion includes a torsion spring having one end contacting the main body and the other end contacting the switch to maintain the initial position of the switch.
3. The method of claim 2,
Wherein the locking guide member is provided with a guide hole, and the locking guide member slides in a state in which the hinge shaft is inserted into the guide hole.
3. The method of claim 2,
Wherein the latching jaw slides and is provided between the connecting portion and the rotation latching portion.
The method according to claim 1,
Wherein the lock guide member is provided with a drive contact portion which is in contact with the drive portion and receives power.
The method according to claim 1,
Wherein the locking guide member and the body are connected by a tension spring.
10. The method of claim 9,
Wherein the driving unit rotates to slide the locking guide member in one direction, and the tension spring applies an elastic force to slide the locking guide member in the other direction.
The method according to claim 1,
Wherein the driving unit is provided with a larger turning radius in a direction opposite to the rotation direction so that the locking guide member is slidably moved according to the dome.

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