KR20170077645A

KR20170077645A - Apparatus for Operation of On/Off Button of Circuit Breaker

Info

Publication number: KR20170077645A
Application number: KR1020150187744A
Authority: KR
Inventors: 한대수; 양승필; 김종두; 문승환
Original assignee: 엘에스산전 주식회사
Priority date: 2015-12-28
Filing date: 2015-12-28
Publication date: 2017-07-06
Also published as: KR101759600B1

Abstract

The present invention relates to a power button operation device for a vacuum circuit breaker, and more particularly to a power button operation device for a vacuum circuit breaker which can safely turn on / off a breaker main body from the outside of a cradle door in a state where the breaker main body is housed in a cradle or an electric switchboard .
The apparatus for operating a power button of a vacuum circuit breaker according to an embodiment of the present invention includes a base plate installed in a cradle door; An on / off button installed through the cradle door and the base plate; A push bar fixing bracket installed perpendicularly to the base plate; And a pair of push bars installed on the push bar fixing bracket and operating the ON and OFF buttons of the vacuum breaker body when pressed by the ON / OFF button.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vacuum breaker,

The present invention relates to a power button operating device for a vacuum circuit breaker, and more particularly, to a power button operating device of a vacuum circuit breaker for safely turning on / off the breaker main body from the outside of a cradle door in a state where the breaker main body is housed in a cradle or an electric switchboard .

Generally, the vacuum circuit breaker is a vacuum interrupter (Vacuum Interrupter: VI) inside the circuit breaker by means of an external relay in case of abnormal current such as overcurrent, short circuit and ground fault of extra high voltage / high voltage power distribution line. It protects the load device.

Such a vacuum circuit breaker is installed in an electric switchboard for inserting and managing various electric devices for operation and control of a power station and a substation, and for driving an electric motor, and a breaker main body is housed in a cradle (cradle, compartment) fixed to the switchboard It is common to be installed.

1 and 2 are perspective views of a vacuum breaker cradle and a vacuum breaker main body according to the prior art, respectively. 3 and 4 show a state in which the vacuum breaker body is housed in the cradle according to the prior art. Here, the vacuum circuit breaker body is placed at the test position and the operation position, respectively.

The cradle 1 is provided with a cradle door 3 on its front portion and a cradle terminal 2 on its rear portion which can be connected to a power source and a load. An operation hole for inserting the operation rod 9 is formed in the cradle door 3 for operation of the main power switch 6 of the breaker main body 5, (4).

The circuit breaker main body 5 is provided with a main power (On / Off) button 6 on its front part, a terminal 8 on its rear part and a transfer device 7 are provided.

The terminal 8 of the circuit breaker main body 5 is connected to the cradle terminal 2 so that the voltage and the current are supplied to the cradle 1, (Test) position which can be separated from the power source 2 and can only test the operation of the circuit breaker.

Fig. 4 shows a state in which the circuit breaker main body 5 is in the operating position. At this time, a state is shown in which the main power button 6 is operated using the operating rod 9 in a state where the cradle door 3 is closed. Here, for convenience of understanding, the cradle door 3 is omitted and only the operation hole cover 4 is shown.

In the vacuum circuit breaker according to the related art, when the breaker main body 5 is in the operating position and the cradle door 3 is closed, the operation hole cover 4 is opened to operate the main body power button 6, So that the main body power button 6 is operated.

However, the vacuum breaker according to the related art using such a method has the following problems.

First, there is a possibility that the operation hole cover 4 is opened. In this case, the hermeticity of the cradle door 3 is deteriorated and there is a risk of a safety accident.

Secondly, when an accident occurs during the operation of the operating rod 9, there is a possibility that an arc is leaked into a gap of the operating hole, thereby causing a safety accident.

third. If the operating rod 9 is lost, the coping ability in case of an emergency occurs.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a power button operation device for a vacuum circuit breaker capable of safely performing on / off operation of a breaker main body in a closed state of a cradle door.

The apparatus for operating a power button of a vacuum circuit breaker according to an embodiment of the present invention includes a base plate installed in a cradle door; An on / off button installed through the cradle door and the base plate; A push bar fixing bracket installed perpendicularly to the base plate; And a pair of push bars installed on the push bar fixing bracket and operating the ON and OFF buttons of the vacuum breaker body when pressed by the ON / OFF button.

Here, a support portion capable of supporting the on / off button is provided below the base plate.

Further, the present invention is further characterized by a rotating means for rotating the push bar fixing bracket.

Further, the rotating means may include: a pair of shaft brackets provided on the base plate; A rotating shaft installed through the pair of shaft brackets and the push bar fixing bracket; A handle for providing power to rotate the rotation shaft; And a return spring installed on a part of the rotary shaft for returning the push bar fixing bracket to an original position.

In addition, the pivot means may include a pivot pin projecting from the pivot shaft; And a shaft pin protruding from a handle shaft protruding from the rear of the handle and capable of moving the rotary shaft pin.

The push bar fixing bracket is formed in a 'C' shape, and one end or both ends of the push bar fixing bracket are protruded and formed in contact with the base plate in a vertical state to fix the position thereof .

The push bar fixing bracket may be provided at one or both ends thereof with an angle adjusting means for fixing the position of the push bar fixing bracket in contact with the base plate in a horizontal state.

In addition, the angle adjusting means may further include a screw hole formed in the mounting portion, and an angle adjusting screw inserted into the screw hole.

And a push bar return spring installed on a part of the pair of push bars to return the pair of push bars.

In addition, the push bar may include a contact plate on one end thereof, the contact plate being capable of contacting the on / off button.

In addition, a length adjusting means is provided at one end of the push bar so that the distance between the push bar and the on / off button can be adjusted.

The length adjusting means includes a length adjusting nut provided at one end of the push bar, and the contact plate is formed of a screw.

According to the apparatus for operating the power button of the vacuum circuit breaker according to the embodiment of the present invention, since the power button operation device of the vacuum circuit breaker is always installed in the cradle door, the on / off operation of the circuit breaker main body It is possible to respond quickly in emergency situations.

In addition, the cradle door does not form an operation hole and maintains perfect interception with the outside.

In addition, when the handlebar is vertically placed, operation with respect to the main body power button is disabled, thereby preventing unintended operation.

In addition, it is possible to configure the apparatus so that only the selective operation for the On / Off button is selected according to the user's selection.

Since the length adjusting means and the angle adjusting means are provided to adjust the apparatus so as to allow accurate contact with the power button of the main body, it is easy to adjust the direction of the stroke.

1 is a perspective view of a vacuum breaker cradle according to the prior art.
2 is a perspective view of a vacuum breaker main body according to the prior art.
3 is a perspective view of a vacuum cleaner in which a vacuum breaker main body is housed in a cradle according to the related art. Here, the vacuum circuit breaker main body is placed in the test position.
Fig. 4 shows a state in which the vacuum circuit breaker main body is in the operating position in Fig. Also, the state of operating the On / Off button of the vacuum breaker main body using the push bar is shown. Here, for convenience of understanding, the cradle door is omitted.
5 illustrates a vacuum breaker body and a cradle equipped with a power button operation device of a vacuum breaker according to an embodiment of the present invention. Here, the cradle door and the side portion are omitted. Also, the vacuum circuit breaker main body is in the test position.
Fig. 6 shows a state in which the vacuum circuit breaker main body is in the operating position in Fig.
FIG. 7 shows a state in which the handle of the power button operating device of the vacuum circuit breaker is turned to be in the ON / OFF operable position in FIG.
8 is a front perspective view of a cradle door according to an embodiment of the present invention. Here, the power button operation device of the vacuum circuit breaker is placed in the on / off operation disabled position.
Fig. 9 is a rear perspective view of Fig. 8. Fig.
Fig. 10 shows a state in which the power button operating device of the vacuum circuit breaker is placed in an on / off operable position in Fig.
11 is a rear perspective view of Fig.
12 is a front perspective view of an apparatus for operating a power button of a vacuum circuit breaker according to an embodiment of the present invention. Here, the emergency power switch is in the On / Off disabled position.
13 is a rear perspective view of Fig.
14 is a front perspective view of a power button operation device of a vacuum circuit breaker according to an embodiment of the present invention. Here, the emergency power switch is placed in an On / Off operable position.
15 is a rear perspective view of Fig.
Fig. 16 is a plan view of Fig. 14. Fig.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings, which are intended to illustrate the present invention in a manner that allows a person skilled in the art to easily carry out the invention. And does not mean that the technical idea and scope of the invention are limited.

5 to 7 illustrate a vacuum breaker body and a cradle equipped with a power button operation device of a vacuum breaker according to an embodiment of the present invention. Here, FIG. 5 shows a state in which the position of the vacuum circuit breaker main body is in the test position, and FIGS. 6 and 7 show the state in which the vacuum circuit breaker body is in the operation position. 8 to 11 show a state in which the power button operating device of the vacuum circuit breaker is installed in the cradle door. 12 to 16 show an apparatus for operating a power button of a vacuum circuit breaker according to an embodiment of the present invention. A power button operating device for a vacuum circuit breaker according to each embodiment of the present invention will be described in detail with reference to the drawings.

The apparatus for operating a power button of a vacuum circuit breaker according to an embodiment of the present invention includes a base plate 20 installed on a cradle door 11; On / Off buttons (30, 31) installed through the cradle door (11) and the base plate (20); A push bar fixing bracket 40 installed vertically to the base plate 20; Off button 17 and 18 of the vacuum breaker main body 16 when pressed by the ON / OFF button 30. The push-button fixing bracket 40 is provided with a push- And a pair of push bars (50).

The cradle 10 constituting the cutoff chamber forms a part of the switchboard (not shown), and serves as a space in which the breaker main body 16 is housed. The cradle 10 is formed in a box shape, and a cradle terminal 10a is provided at the rear side.

A cradle door (11) is provided on the front surface of the cradle (10). The cradle door 11 can be opened and the circuit breaker body 16 can be received.

The breaker main body 16 is provided with a main body on / off button 17 and 18 on its front face, a terminal 19 on its rear face and a transfer device 16a .

The cradle door (11) is provided with a power button operation device for a vacuum circuit breaker according to an embodiment of the present invention.

A base plate (20) is provided on the rear surface of the cradle door (11). The base plate 20 is formed as a flat plate, and a base 21 is provided at a lower portion of the base plate 20 so that the on / off buttons 30 and 31 can be installed.

The on / off buttons 30 and 31 are installed through the cradle door 11 and the base plate 20. The button portions 30a and 31a of the on / off buttons 30 and 31 are installed to be exposed on the front surface of the cradle door 11. [ On / off button bars 30b and 31b on the on / off buttons 30 and 31 are provided to protrude into the cradle 10. The on / off button bars 30b and 31b can be supported through the support unit 21. [ That is, the on / off buttons 30 and 31 may be fixedly installed through the base plate 20 and the receiving unit 21.

A pair of push bars 50 are provided for operating the body on / off buttons 17 and 18 of the breaker body 16 and the push bars 50 can be installed on the push bar fixing bracket 40. [

The push bar fixing bracket 40 may be formed in a 'C' shape. A contact portion 41 may protrude from one end or both ends of the push bar fixing bracket 40 on the side contacting the base plate 20. The contact portion 41 serves to fix the position by contacting the base plate 20 when the push bar fixing bracket 40 is placed in the vertical position.

A spring fixing part (42) is provided below the contact part (41). The spring fixing part 42 may be formed as a groove. At one end or both ends of the push bar fixing bracket 40, an angle adjusting means mounting portion 43 capable of providing an angle adjusting means may be provided. The angle adjusting means setting portion 43 may be formed at one or both ends of the push bar fixing bracket 40 and the angle adjusting means setting portion 43 may be formed with a screw hole 43a. The angle adjusting means may be constituted by an angle adjusting screw 47 which is fitted in the screw hole 43a. The angle can be adjusted when the push bar fixing bracket 40 is placed in a horizontal state according to the degree of tightening the angle adjusting screw 47.

The push bar fixing bracket 40 may be provided with an intermediate plate 48 provided to cross the center portion. The front plate 45 and the intermediate plate 48 of the push bar fixing bracket 40 are provided with the first push bar through hole 46 and the second push bar through hole 49 so as to be able to penetrate the push bar 50, .

The push bar 50 is inserted through the second push bar through hole 49 of the intermediate plate 48 and the first push bar through hole 46 of the front plate 45. A fixing ring 51 may be provided on a part of the push bar 50 to fix the push bar 50. The push bar 50 can be fixed in position by the fixing ring 51 contacting the intermediate plate 48 or the front plate 45. [

A push bar return spring 55 is provided to return the push bar 50 to its original position. The push bar 50 is provided with a spring retaining ring 52 at a portion between the front plate 45 and the intermediate plate 48 so that the push bar return spring 55 can operate. The push bar return spring 55 is provided between the front plate 45 and the spring retaining ring 52 to store the elastic force when the push bar 50 is pushed and a restoring force is applied when the push bar 50 ) To the home position.

At one end of the push bar 50, a contact plate 56 is provided. The contact plate 56 may be formed as a disc perpendicular to the push bar 50. The contact plate 56 may be formed in a plate shape so that the on / off button bars 30b and 31b of the on / off buttons 30 and 31 can be easily contacted.

A length adjusting means is provided at one end of the push bar (50). The length adjusting means is for adjusting the interval between the push bar 50 and the on / off button 30, 31. The contact plate 56 can be coupled in a manner such that it is screwed into the push bar 50 in an embodiment of this length adjusting means. That is, one end of the push bar 50 is provided with a length adjusting nut 54, and the contact plate 56 can be made of a screw. The distance between the push bar 50 (here, the contact plate 56) and the on / off button 30, 31) is adjusted according to the degree to which the contact plate 56 is turned and fitted to the push bar 50. [

The combination of the push bar 50 and the push bar fixing bracket 40 will be referred to as a push bar assembly 40, 50. Pivoting means are provided to pivot the push bar assemblies 40,50. One embodiment of the pivoting means comprises a handle (12). An axial bracket 25, a rotary shaft 35, and a return spring 38. [

The handle 12 is installed through the cradle door 11 and the base plate 20 on one side of the push bar fixing bracket 40. The handle 13 of the handle 12 is exposed to the outside of the cradle door 11 so that the user can grasp the force. The handle shaft 14 of the handle 12 can protrude into the inside of the cradle door 11 and rotate. The handle shaft 14 may be provided with a shaft pin 15 mounted in a direction perpendicular to the handle shaft 14.

An axial bracket 25 is provided to fix the rotary shaft 35. The shaft bracket 25 may be composed of a pair of 'a' brackets fixed to the base plate 20. The shaft bracket 25 can be fixed to the base plate 20 by screwing, welding, or the like. The shaft bracket 25 may be formed with a first shaft through hole 26 through which the rotation shaft 35 can be inserted.

A rotary shaft 35 is installed through the shaft bracket 25 and the push bar fixing bracket 40. The rotary shaft 35 is inserted into the first shaft through hole 26 of the shaft bracket 25 and the second shaft through hole 44 of the push bar fixing bracket 40. A shaft fixing ring 36 is provided to fix the installation position of the rotary shaft 35. The shaft retaining ring 36 is fitted to the rotary shaft 35 so as to contact one or both surfaces of the shaft bracket 25.

The rotary shaft 35 may be provided with a rotary shaft pin 37 at one end in a direction perpendicular to the rotary shaft 35.

A return spring 38 may be provided on the rotary shaft 35. [ The return spring 38 is provided to return the push bar fixing bracket 40 to its original position (vertical position). The return spring 38 may be provided between the side of the push bar fixing bracket 40 and the shaft bracket 25. The return spring 38 may be configured as a torsion spring to pivot the push bar fastening bracket 40 between the vertical position and the horizontal position. One end of the return spring 38 can be fitted to the spring fixing portion 42. [ When the push bar fixing bracket 40 moves to the horizontal position, the return spring 38 stores the elastic force, and when the external force is removed, the push bar fixing bracket 40 returns to the original position by the restoring force.

The handle shaft 14 and the rotary shaft 35 are positioned in directions perpendicular to each other. Therefore, rotation direction switching means is provided to transmit the power of the handle 12 to the rotary shaft 35. [ And may include a shaft pin 15 provided on the handle shaft 14 and a rotary shaft pin 37 provided on the rotary shaft 35 as an embodiment of the rotation direction switching means. When the handle shaft 14 is rotated by rotating the handle 13 of the handle 12, the shaft pin 15 rotates along the shaft pin 14 to press the rotary shaft pin 37. When the rotary shaft pin 37 moves, . The rotation direction switching means may be implemented by applying known means capable of switching the rotational direction, such as a bevel gear.

Operation of the power button operating device of the vacuum circuit breaker according to an embodiment of the present invention will be described.

5 and 6, the push bar assemblies 40 and 50 are vertically positioned inside the cutoff chamber in a state where the handle 13 of the handle 12 is vertically laid. In this case, the push bar 50 is in a state in which it is impossible to operate the main body on / off button 17.

7, when the grip portion 13 of the handle 12 is rotated and held in the horizontal direction at the operation position of the breaker main body 16, the power of the handle 12 is transmitted to the rotation direction switching means 15, Thereby rotating the rotary shaft 35, whereby the push bar assemblies 40, 50 are placed in the horizontal direction. At this time, the angle adjusting means (the angle adjusting screw 47) touches the base plate 20. In this case, the push bar assemblies 40, 50 are placed in a state operable with respect to the main body on / off button 17. At this time, pushing the on / off buttons 30 and 31 causes the push bar 50 to go straight and connect or disconnect the circuit by pressing the body on / off buttons 17 and 18.

According to the apparatus for operating the power button of the vacuum circuit breaker according to the embodiment of the present invention, since the cradle door is fixed to the cradle door, it is possible to operate the main body on / off button without closing the cradle door. Therefore, it is possible to quickly cope with an emergency situation.

In addition, the door hole cover is not opened and operated as in the prior art, but is always operated in the state of being blocked from the outside, so that it is possible to safely protect the operator even in a dangerous situation such as an arc occurrence.

Further, when the external force is not applied, the push bar assembly is placed in a vertical state and the main body on / off button can not be operated, thereby preventing unintended operation.

Further, an angle adjusting means capable of adjusting the rotation angle of the push bar assembly and a length adjusting means capable of adjusting the interval between the push bar and the on / off button are provided, so that accurate operation can be performed.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the invention. Therefore, the embodiments disclosed in the present invention are not intended to limit the scope of the present invention but to limit the scope of the technical idea of the present invention. That is, the scope of protection of the present invention should be construed according to the following claims, and all technical ideas which are within the scope of the same should be interpreted as being included in the scope of the present invention.

10 Cradle 10a Cradle Terminal
11 Cradle Door 12 Handle
13 Handle 14 Handle shaft
15 Shaft pin 16 Circuit breaker body
16a Feeding device 17,18 Main body on / off button
19 terminal 20 base plate
21 Base part 25 Axial bracket
26 1st shaft through hole 30, 31 ON / OFF button
30a, 31a button portions 30b, 31b on / off button bar
35 Rotary shaft 36 Axial retaining ring
37 Rotation shaft pin return spring
40 push bar fixing bracket 41 contact portion
42 spring fixing portion 43 angle adjusting means mounting portion
43a screw hole 44 second shaft through hole
45 front plate 46 first push bar through hole
47 Angle adjusting screw 48 Middle plate
49 second push bar through hole 50 push bar
51 Retaining ring 52 Spring retaining ring
54 Length adjustment nut 55 Push bar return spring
56 contact plate

Claims

A base plate installed in the cradle door;
An on / off button installed through the cradle door and the base plate;
A push bar fixing bracket installed perpendicularly to the base plate;
And a pair of push bars installed on the push bar fixing bracket and operated by the on / off button of the vacuum breaker body when pressed by the on / off button.

The apparatus of claim 1, wherein a support portion capable of supporting the on / off button is provided on a lower portion of the base plate.

The apparatus as claimed in claim 1, further comprising a turning means for rotating the push bar fixing bracket.

4. The apparatus according to claim 3,
A pair of shaft brackets installed on the base plate;
A rotating shaft installed through the pair of shaft brackets and the push bar fixing bracket;
A handle for providing power to rotate the rotation shaft; And
And a return spring installed on a part of the rotary shaft for returning the push bar fixing bracket to an original position.

[5] The apparatus of claim 4, wherein the rotating means includes: a rotating shaft pin protruding from the rotating shaft; And
And a shaft pin protruding from a handle shaft protruding from the rear of the handle to move the rotary shaft pin.

The push bar fixing bracket according to claim 1, wherein the push bar fixing bracket is formed in a 'C' shape, and one end or both ends of the push bar fixing bracket are in contact with the base plate in a vertical state to protrude And the power source of the vacuum circuit breaker.

The apparatus of claim 6, wherein the push bar fixing bracket is formed at one or both ends thereof with an angle adjusting means for fixing the position of the push button fixing bracket in contact with the base plate in a horizontal state.

8. The apparatus of claim 7, further comprising a screw hole formed in the angle adjusting means, and an angle adjusting screw inserted in the screw hole.

The apparatus of claim 1, further comprising a push bar return spring installed on a part of the pair of push bars to return the pair of push bars.

The apparatus of claim 1, wherein the push bar is provided at one end thereof with a contact plate capable of contacting the on / off button.

11. The apparatus as claimed in claim 10, wherein a length adjusting means is provided at one end of the push bar so that the gap with the on / off button can be adjusted.

12. The apparatus of claim 11, wherein the length adjusting means includes a length adjusting nut provided at one end of the push bar, and the contact plate is formed of a screw.