KR20200035624A - Electric opening system for circuit breaker - Google Patents

Abstract

Disclosed is an invention for an auxiliary switchgear for a distribution breaker. The auxiliary opening and closing device of the switchgear of the present invention includes: a casing provided in the switchboard body, a rod guide block fixedly installed in the casing, a linear reciprocating movement along the axial direction to be supported by the rod guide block and protrude to the outside of the casing, outside the casing It characterized in that it comprises a shuttle rod for pushing the manual shut-off button provided on the switchboard body while moving forward to protrude to, and an actuator for guiding the shuttle rod in a linear reciprocating motion.

Description

Auxiliary switchgear for distribution breakers {ELECTRIC OPENING SYSTEM FOR CIRCUIT BREAKER}

The present invention relates to an auxiliary opening and closing device of a distribution breaker, and more specifically, when detecting an overcurrent or detecting a failure of a distribution line, by receiving a corresponding signal and advancing the plunger, a manual blocking button through a shuttle rod advanced by the plunger It relates to an auxiliary opening and closing device of a distribution breaker that can prevent the non-operation or delayed operation of the circuit breaker by quickly operating the.

As a means to automatically cut off the circuit against overcurrent due to overcurrent or short circuit, a circuit breaker as described in Korean Registered Utility Model Publication No. 20-0382138 (Registration Date: 2005.04.08. .

On the other hand, when the wiring breaker was installed inside the switchboard, the manual switch had to be operated after opening the front door of the switchboard for manual operation of the wiring breaker, so there was a problem that the inconvenience caused by opening and closing the front door of the switchboard was followed.

For this reason, a circuit breaker having a handle shaft in connection with a switch of the main body has been proposed.

In the case of a circuit breaker provided with a handle shaft in connection with a switch in the main body, the front end of the handle shaft provided in the main body is engaged with the handle of the front door of the switchboard in a state installed inside the switchboard, thereby operating the switch of the main body by operating the handle of the front door of the switchboard Since this can be made, the manual operation of the circuit breaker can be easily performed even when the front door of the switchboard is closed.

However, in a circuit breaker for a wiring shaft provided with a handle shaft in connection with a switch in the main body, the tip of the handle shaft may be biased to either side of the upper, lower, left, or right sides due to tolerances or misproduction between parts. When biased to one side, it is difficult to engage with the handle provided on the front door of the switchboard, so manual manipulation of the circuit breaker cannot be made by operating the handle, and it is difficult to close the front door of the switchboard when the handle shaft and the handle are not engaged. There is a problem that Ham follows.

For this reason, in the field, the field seeks a method to facilitate the combination of the handle shaft and the handle, as well as to smoothly close the front door of the switchboard, but until now, satisfactory results have not been obtained.

The present invention was created to improve the problems as described above, and the object of the present invention is to detect an overcurrent or detect a failure in a distribution line, receive a corresponding signal, and advance the plunger, manually through a shuttle rod that is advanced by the plunger. It is to provide an auxiliary opening and closing device of a distribution breaker that can prevent the delay and delay operation of the circuit breaker and secure the operational reliability of the manual shut-off button by activating the shut-off button quickly.

An auxiliary opening and closing device of a switchgear according to the present invention includes: a casing provided in the switchboard body; A rod guide block fixedly installed in the casing; A shuttle rod supported by the rod guide block, linearly reciprocated along an axial direction so as to protrude outward of the casing, forwardly moved protruding outward of the casing, and pressing a manual shutoff button provided on the switchboard body; And an actuator for guiding the shuttle rod in a linear reciprocating motion.

The actuator includes a solenoid body that receives an electrical signal from the outside; A plunger provided to be accessible to the solenoid body and receiving a linear reciprocating motion through the electrical signal; It is provided integrally with the shuttle rod, a pawl mover (pawl mover) that is moved forward with the shuttle rod by the pushing force of the plunger; And an elastic member that elastically supports the pole mover with respect to the casing, thereby retracting the pole mover and the shuttle rod to an initial position when an external force pushing the shuttle rod is removed.

The auxiliary opening and closing device of the distribution circuit breaker according to the present invention includes: a state detection unit detecting a state in which the shuttle rod operates the manual blocking button by the operation of the actuator.

The state detection unit, a ratchet pole linked to the linear reciprocating movement of the shuttle rod; A ratchet gear that is rotatably provided on the casing or the rod guide block, and rotates by a predetermined amount in one direction by an action of pushing the gear teeth by forming the gear teeth on the circumferential surface and advancing with the shuttle rod; A support block fixed to the casing; A rotary shaft rotatably inserted into the support block and connected to the ratchet gear to be elastically rotated in one direction by a predetermined amount by the ratchet gear; A display plate fixed to the rotary shaft and rotated together in a circumferential direction, and displaying an operating state of the manual shut-off button as a portion exposed to the outside of the casing is differently displayed; And an initial return portion for initializing the display plate and the ratchet gear so as to return the portion exposed to the outside of the casing to the initial position.

The initial return portion, the rack gear member is provided to be movable back and forth along the axial direction; A pinion gear member formed on the circumferential surface of the rotary shaft, the rack gear member being geared after a certain distance in the axial direction; A guide mechanism formed along a certain trajectory with different height differences on the rack gear member; And a shift block connected to the guide mechanism and returning the ratchet gear to an initial position through forced rotation of the rotary shaft by moving the ratchet pole from the ratchet gear when the rack gear member moves forward.

The pinion gear member is formed to protrude the pivot on the circumferential surface, and the support block is provided with a stopper in contact with the pivot to set the origin when returning to the initial position of the pinion gear member.

In the auxiliary switchgear of the distribution breaker according to the present invention, when detecting an overcurrent or detecting a failure in a distribution line, the corresponding signal is transmitted to advance the plunger, thereby quickly activating the manual shut-off button through the shuttle rod advanced by the plunger. Accordingly, it is possible to prevent the delay and delay operation of the breaker, and to ensure the operational reliability of the manual shut-off button.

1 is a configuration diagram of a switchboard body having an auxiliary switchgear for a distribution circuit breaker according to an embodiment of the present invention.
Figure 2 is a perspective view of the auxiliary switchgear of the distribution circuit breaker according to an embodiment of the present invention.
Figure 3 is a rear perspective view of the auxiliary switchgear of the distribution circuit breaker according to an embodiment of the present invention.
4 and 5 is a perspective view showing the actuator operating state of the auxiliary switchgear of the distribution circuit breaker according to an embodiment of the present invention.
6 and 7 are perspective views showing the operating state of the state detection unit of the auxiliary switchgear of the distribution circuit breaker according to an embodiment of the present invention.

Hereinafter, an auxiliary opening and closing device of a distribution circuit breaker according to an embodiment of the present invention will be described with reference to the accompanying drawings. In this process, the thickness of the lines or the size of components shown in the drawings may be exaggerated for clarity and convenience.

In addition, terms to be described later are terms defined in consideration of functions in the present invention, which may vary according to a user's or operator's intention or practice. Therefore, the definition of these terms should be made based on the contents throughout the present specification.

1 is a configuration diagram of a switchboard body having an auxiliary switchgear for a distribution circuit breaker according to an embodiment of the present invention.

2 is a perspective view of an auxiliary opening and closing device of a distribution breaker according to an embodiment of the present invention, and FIG. 3 is a rear perspective view of an auxiliary opening and closing device of a distribution breaker according to an embodiment of the present invention.

4 and 5 is a perspective view showing the actuator operating state of the auxiliary opening and closing device of the distribution circuit breaker according to an embodiment of the present invention, Figures 6 and 7 are auxiliary opening and closing of the distribution circuit breaker according to an embodiment of the present invention It is a perspective view showing an operating state of the state detection unit of the device.

1 to 7, the auxiliary opening and closing device 100 of the distribution circuit breaker according to an embodiment of the present invention includes a casing 110, a rod guide block 120, a shuttle rod 130, an actuator ( 200) and a state detection unit 300.

The casing 110 is fixed to the switchboard body 10. In particular, the casing 110 is fixedly installed on the switchboard body 10 so as to be adjacent to the manual shut-off button 20 that manually cuts off the current (circuit) when detecting an overcurrent or distribution line failure. Of course, the casing 110 can be applied in various shapes and materials.

The rod guide block 120 is fixedly installed inside the casing 110. The rod guide block 120 may be the casing 110 itself, and may be applied in various shapes and materials.

The shuttle rod 130 is reciprocated along the axial direction while being supported by the rod guide block 120 and protrudes to the outside of the casing 110 and serves to press the manual blocking button 20 discontinuously. At this time, the rod guide block 120 is inserted into the shaft through the shuttle rod 130 or concave the groove in the upper side to prevent the shake or departure of the shuttle rod 130 that is linearly reciprocated along the axial direction. The depression is formed to stably support the shuttle rod 130.

Of course, the shuttle rod 130 can be applied in various shapes and materials.

In particular, the casing 110 passes through the first opening 112 so that the shuttle rod 130 is advanced and exposed to the outside. In addition, in order to prevent the friction between the shuttle rod 130 and the inner surface of the first opening 112 is greatly generated, a cylindrical sleeve 242 is inserted into the first opening 112, the shuttle rod 130 Is reciprocally moved while being axially inserted into the sleeve 242. The sleeve 242 can be deformed into various shapes.

In addition, the actuator 200 receives a signal generated when detecting an overcurrent or a failure of the distribution line, and pushes the shuttle rod 130 to quickly press the manual shut-off button 20.

At this time, the actuator 200 includes a solenoid body 210, a plunger 220, a pole mover (pawl mover 230) and an elastic member 240.

The solenoid body 210 is fixedly installed inside the casing 110, and serves to receive a corresponding electrical signal according to an overcurrent or a failure of the distribution line from the outside.

Then, the plunger 220 is provided to be accessible to the solenoid body 210, and is moved forward along the axial direction by an electrical signal generated inside the solenoid body 210. At this time, the electrical and mechanical configuration inside the solenoid body 210 for moving the plunger 220 forward is omitted.

In particular, the solenoid body 210 may adjust the force for advancing the plunger 220 and the moving distance of the advancing through an electrical signal.

The pole mover 230 is integrally provided with the shuttle rod 130 and may be the shuttle rod 130 itself. In addition, the pole mover 230 is moved forward with the shuttle rod 130 by the pushing force of the plunger 220. So, the shuttle rod 130 is able to press the manual shut-off button 20.

Of course, the pole mover 230 can be modified in various shapes.

The elastic member 240 is disposed along the axial direction of the shuttle rod 130, one side is elastically supported on the casing 110 or the sleeve 242 fixed in position, and the other side is a pole that is moved together with the shuttle rod 130 The mover 230 is elastically supported.

So, when the shuttle rod 130 moves forward to the manual blocking button 20 side, the elastic member 240 is compressed. Thereafter, when the electrical signal that pushes the shuttle rod 130 in the axial direction is removed, the shuttle rod 130 is retracted by the elastic restoring force of the elastic member 240 and returns to the initial position, and is linked to the plunger 220 Is reversed.

For convenience, the elastic member 240 is shown as a coil spring for axially inserting the shuttle rod 130.

On the other hand, the state detection unit 300 serves to detect the state (normal pressing, the number of times, etc.) of the shuttle rod 130 operating the manual shut-off button 20 by the operation of the actuator 200.

To this end, the state detection unit 300 includes a ratchet pole 310, a ratchet gear 320, a support block 330, a rotary shaft 340, a display plate 350, and an initial return unit 360.

The ratchet pole 310 is hinged to the shuttle rod 130 or the pole mover 230, and is interlocked with the linear reciprocating movement of the shuttle rod 130.

The ratchet gear 320 is rotatably provided on the casing 110 or the rod guide block 120, and the ratchet pole 310 is advanced along with the shuttle rod 130 by forming a gear tooth 322 on the circumferential surface. It is rotated by a set amount in one direction by the action of pushing the gear teeth 322.

In particular, when the shuttle rod 130 moves forward to the manual blocking button 20 side, the ratchet pole 310 is hinged to the pole mover 230 so that the corresponding gear value is in contact with an arbitrary gear value 322 by its own weight. 322 is pushed in the circumferential direction.

Thereafter, when the shuttle rod 130 returns to the initial position, the ratchet pole 310 moves along the corresponding gear value 322 and then comes into contact with the adjacent gear value 322. Thus, the ratchet pole 310 is in a standby state capable of rotating the ratchet gear 320. At this time, the force to be rotated in the direction opposite to the direction in which the ratchet gear 320 is rotated by the pushing force of the ratchet pole 310 is generated, but after the ratchet pole 310 returns to the initial position in a short time, another (neighbor) 1) By contacting the gear teeth 322, the ratchet gear 320 is rotated only in one direction.

The support block 330 is fixedly installed inside the casing 110 and can be modified in various shapes.

The rotary shaft 340 is rotatably inserted into the support block 330 and supported, and one side is connected to the ratchet gear 320 along the axial direction. For example, one side of the rotary shaft 340 and the ratchet gear 320 are geared as the miter gear 342. Thus, when the ratchet gear 320 rotates by a set amount by one cycle movement of the ratchet pole 310, the rotary shaft 340 is interlocked with the ratchet gear 320 and rotates in one direction.

At this time, the ratchet gear 320 is constrained to the ratchet pole 310 to prevent rotation in the other direction, and constrains the rotary shaft 340 through the miter gear 342. In addition, the ratchet gear 320 is not arbitrarily rotated continuously in one direction.

The display plate 350 is fixed to the other side of the rotary shaft 340 and rotates together in the circumferential direction. Then, the casing 110 forms a second opening 114 to expose a part of the front surface of the display plate 350. In addition, the display plate 350 is divided into different colors along the circumferential direction on the front surface or serial numbers are arranged. So, the user can manually or manually block the rotary shaft 340 and the ratchet gear 320 through the amount of rotation and rotation of the display plate 350 through the second opening 114. The operating state (number of times, etc.) of the button 20 is confirmed. Of course, the display plate 350 can be applied in various shapes and materials.

In addition, the initial return portion 360 serves to initialize the display plate 350 and the ratchet gear 320 to return the portion exposed to the outside of the casing 110 through the second opening portion 114 to the initial position. do. That is, the initial return unit 360 serves to return to the initial state after counting the state in which the shuttle rod 130 pressed the manual blocking button 20 through the display plate 350.

The initial return part 360 includes a rack gear member 361, a pinion gear member 362, a guide mechanism 363, and a shift block 364.

The rack gear member 361 is provided to be movable back and forth along the axial direction from inside the casing 110. In detail, the casing 110 is provided with a rack guide block 365 fixedly, and the rack gear member 361 is reciprocated along an axial direction while being supported by the rack guide block 365. Of course, the rack guide block 365 can be modified in various shapes.

The pinion gear member 362 is formed on the circumferential surface of the rotary shaft 340, and the rack gear member 361 is gear-coupled with the rack gear member 361 after moving a predetermined distance along the axial direction.

That is, before the rack gear 361 is moved in the axial direction by a set distance, the rack gear member 361 and the pinion gear member 362 are not geared. In other words, when the ratchet pole 310 rotates the ratchet gear 320 in one direction by one cycle, the rack gear member 310 and the pinion gear member 362 are in a non-geared state.

When the rack gear 361 and the pinion gear member 362 are engaged, the ratchet gear 320, the rotary shaft 340, and the rack gear member 361 are mutually constrained.

The guide mechanism 363 is formed along a certain trajectory with different height differences in the rack gear member 361. That is, the guide mechanism 363 is formed in a groove or hole shape that is formed to be inclined upward or downward in the rack gear member 361.

The shift block 364 is connected to the guide tool 363 and serves to play the ratchet pole 310 away from the ratchet gear 320 when the rack gear member 361 moves forward. In particular, the shift block 364 protrudes and forms a guide pin 368 at the bottom, and the guide pin 368 is inserted into the guide port 363. Thus, when the rack gear member 361 moves along the axial direction, the guide pin 368 is moved in the vertical direction according to the position of the guide sphere 363, so that the shift block 364 is moved in the vertical direction.

As the shift block 364 is moved upward, the ratchet pole 310 is spaced from the ratchet gear 320 by the pushing force of the shift block 364.

Accordingly, the ratchet gear 320 can be rotated in the other direction opposite to the one direction pushed by the ratchet pole 310.

At this time, the rack gear member 361 is formed to extend the reset button 366 to protrude to the outside of the casing 110. So, whenever one cycle (1 cycle) of the ratchet pole 310 pushing the gear 322 of the ratchet gear 320 is completed, the rack gear member 361 and the reset button 366 follow the axial direction. You will reverse. Then, the rotary shaft 340 and the ratchet gear 320 are rotated in the other direction by the user pressing the reset button 366.

So, through the forced rotation of the rotary shaft 340, the ratchet gear 320 and the display plate 350 are moved to the initial position, and the ratchet gear 320 is returned to the initial position through the rotary shaft 340. .

In addition, the reset button 366 is returned to the initial state when the external pressing force is removed by the elastic return induction member 369 elastically supported by the casing 110 or the rack guide block 365. Here, it is assumed that the elastic return induction member 369 is a coil spring.

In addition, the pinion gear member 362 protrudes from the pivot 367 on the circumferential surface, and the support block 330 contacts the pivot 367 to set the origin when returning to the initial position of the pinion gear member 362 A stopper 332 may be provided. Of course, the pivot 367 and the stopper 332 can be deformed into various shapes.

The present invention has been described with reference to the embodiment shown in the drawings, but this is merely exemplary, and those skilled in the art to which the art belongs understand that various modifications and other equivalent embodiments are possible therefrom. will be. Therefore, the true technical protection scope of the present invention should be defined by the following claims.

10: switchboard body 20: manual shut-off button
100: auxiliary switchgear 110: casing
120: Road Guide Block 130: Shuttle Road
200: actuator 210: solenoid body
220: plunger 230: pole mover
240: elastic member 300: state detection unit
310: ratchet pole 320: ratchet gear
330: support block 340: rotary shaft
350: display plate 360: initial return
361: rack gear member 362: pinion gear member
363: guide sphere 364: shift block

Claims (6)

A casing provided in the switchboard body;
A rod guide block fixedly installed in the casing;
A shuttle rod which is supported by the rod guide block, is linearly reciprocated along an axial direction so as to protrude outward of the casing, and presses a manual shut-off button provided on the switchboard body while being moved forwardly protruding outward of the casing; And
Auxiliary opening and closing device of the circuit breaker, characterized in that it comprises an actuator for guiding the shuttle rod in a linear reciprocating motion.
According to claim 1, The actuator,
A solenoid body that receives electrical signals from the outside;
A plunger provided to be accessible to the solenoid body and receiving a linear reciprocating motion through the electrical signal;
It is provided integrally with the shuttle rod, a pawl mover (pawl mover) that is moved forward with the shuttle rod by the pushing force of the plunger; And
An auxiliary opening and closing device for a distribution breaker, comprising: an elastic member for elastically supporting the pole mover with respect to the casing, and retracting the pole mover and the shuttle rod to an initial position when external force pushing the shuttle rod is removed. .
The method according to claim 1 or 2,
And an auxiliary opening / closing device for a distribution breaker, characterized in that it comprises a state detection unit detecting a state in which the shuttle rod operates the manual blocking button by the operation of the actuator.
The method of claim 3, wherein the state detection unit,
A ratchet pole interlocked with the linear reciprocating movement of the shuttle rod;
A ratchet gear that is rotatably provided on the casing or the rod guide block, and rotates by a predetermined amount in one direction by an action of pushing the gear by the ratchet pole advancing with the shuttle rod by forming gear teeth on a circumferential surface;
A support block fixed to the casing;
A rotary shaft rotatably inserted into the support block and connected to the ratchet gear to be elastically rotated in one direction by a predetermined amount by the ratchet gear;
A display plate which is fixed to the rotary shaft and rotates together in a circumferential direction, and displays an operating state of the manual shut-off button as a portion exposed to the outside of the casing is differently displayed; And
And an initial return portion for initializing the display plate and the ratchet gear so as to return the portion exposed to the outside of the casing to the initial position.
The method of claim 4, wherein the initial return portion,
A rack gear member provided to be movable back and forth along an axial direction;
A pinion gear member formed on the circumferential surface of the rotary shaft, the rack gear member being geared after a certain distance in the axial direction;
A guide mechanism formed along a certain trajectory with different height differences on the rack gear member; And
And a shift block connected to the guide mechanism and shifting the ratchet gear to an initial position through forced rotation of the rotary shaft by moving the ratchet pole away from the ratchet gear when the rack gear member moves forward. Auxiliary switchgear for distribution breakers.
The method of claim 5,
The pinion gear member protrudes the pivot on the circumferential surface,
The support block is a secondary opening and closing device for a distribution breaker, characterized in that it comprises a stopper in contact with the pivot to set the origin when returning to the initial position of the pinion gear member.

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