KR101158639B1 - A switching mechanism for circuit braker - Google Patents

A switching mechanism for circuit braker Download PDF

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Publication number
KR101158639B1
KR101158639B1 KR1020100103109A KR20100103109A KR101158639B1 KR 101158639 B1 KR101158639 B1 KR 101158639B1 KR 1020100103109 A KR1020100103109 A KR 1020100103109A KR 20100103109 A KR20100103109 A KR 20100103109A KR 101158639 B1 KR101158639 B1 KR 101158639B1
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South Korea
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movable
contact
lever
contact portion
movable contact
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KR1020100103109A
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Korean (ko)
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KR20120025949A (en
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조현길
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엘에스산전 주식회사
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Abstract

In the opening and closing mechanism of the circuit breaker of the present invention, the opening and closing mechanism of the small circuit breaker comprising a case, a handle rotatably provided on the case, a fixed contactor and a movable contactor connected to a power source or a load of a circuit, wherein one end is connected to the handle. A lever, a movable contact portion including the movable contactor at one end and a lever contact portion at which the other end of the lever contacts the other end, a rotary shaft rotatably coupled to the movable contact portion, and coupled to the case and the movable contact portion at one end. A latch including a main spring for generating an elastic force in the movable contact portion, a contact retaining portion rotatably coupled to the rotating shaft and supporting the other end of the lever to maintain contact with the lever contact portion, and one end of the latch engages with the The movable contact portion and the other end are coupled so that the latch and the movable contact portion are in the same rotating room. A is configured to include a coupling spring which had.
As a result, the movable contactor moves in the long direction of the long hole with respect to the rotation axis by the rotation of the movable contactor and the elastic force of the main spring, thereby increasing the contact pressure between the fixed contactor and the movable contactor. The movable contact portion rotates with respect to the rotation axis by the elastic force of the main spring to move in the long direction of the long hole, thereby increasing the separation distance between the fixed contact and the movable contact.

Description

Switching mechanism of breaker {A SWITCHING MECHANISM FOR CIRCUIT BRAKER}

The present invention relates to an opening and closing mechanism of a circuit breaker including a case, a handle rotatably provided to the case, a fixed contactor and a movable contactor connected to a power source or a load of a circuit, and reduce the number of parts of the opening and closing mechanism to effectively move the movable contact terminal. It provides an opening and closing mechanism of the circuit breaker to increase the work performance and breaking performance by increasing the distance between the fixed contact terminal and the fixed contact terminal.

Miniature circuit breakers for wiring are generally electrical protection devices installed to protect the circuit by preventing damage to the load device and the line due to an accidental current (overload, short circuit) in the electric circuit. In particular, power switches such as malls, offices, and department stores are densely installed in small distribution boards, and are used as devices that can conveniently open and close several power sources in one place. In addition, it is used to open and close the power of equipment for machine tools, factory facilities, etc., and it is possible to install small circuit breakers with high density in distribution board.

Hereinafter, a miniature circuit breaker for a general wiring will be described with reference to the accompanying drawings. 1 is a view showing an off (reset) state of a conventional circuit breaker. In general, a circuit breaker has a case (8) and a cover (8) coupled to an upper portion of a case for accommodating parts, and an opening / closing mechanism for mechanically turning on / off a circuit inside the case and the cover, and detecting an abnormal current and an accident current. It consists of a tripping device part to cut off the converter and a extinguishing device part to extinguish the arc generated between the contacts at the time of breaking.

1 shows the off (reset) state of the breaker, so that the movable contactor 5 and the fixed contactor 6 are spaced apart.

Wherein the opening and closing mechanism handle (1) for indicating the position of each state, the lever (2) to determine the rotation point, the latch (3) acts as a latch and the tripping lever (4) for the latch cover and the circuit breaker, tripping and opening It consists of a main spring (not shown), a trip spring (not shown) acting as a trip pressure between the latch and the trip lever, a return spring (not shown) acting as a return pressure of the handle.

The conventional small circuit breaker as described above has a disadvantage that the arc extinguishing portion is small because the size of the opening / closing mechanism to operate is large and complicated. That is, as described above, the conventional miniature breaker is configured to include a latch, a latch cover, a trip lever, a movable contact portion for supporting the movable contactor, and three springs for applying pressure to their movements, which requires a lot of parts and is easy to assemble. There was not a problem, and the size of the extinguishing device of the circuit breaker was limited by the opening and closing mechanism that occupies a relatively large volume, and there was a problem that the extinguishing performance was deteriorated.

 In addition, the O / T angle of the contact exists between the movable contact portion and the latch cover supporting the movable contactor, so that it is difficult to increase the distance between the movable contactor and the fixed contactor.

Furthermore, there are many materials and complicated structure, the material cost is high and the assembly cost is increased.

The present invention has the following configuration to achieve the above problems.

In the opening and closing mechanism of the circuit breaker of the present invention, the opening and closing mechanism of the small circuit breaker comprising a case, a handle rotatably provided on the case, a fixed contactor and a movable contactor connected to a power source or a load of a circuit, wherein one end is connected to the handle. A lever, a movable contact portion including a movable contactor at one end and a lever contact portion at which the other end of the lever contacts the other end, a rotary shaft rotatably coupled to the movable contact portion, and coupled to the case and the movable contact portion at one end. A latch including a main spring for generating an elastic force in the movable contact portion, a contact retaining portion rotatably coupled to the rotating shaft and supporting the other end of the lever to maintain contact with the lever contact portion, and one end of the latch engages with the The movable contact portion and the other end are coupled so that the latch and the movable contact portion are in the same rotating room. A is configured to include a coupling spring which had.

Here, the movable contact portion includes a long shaft-shaped rotary shaft receiving hole, the rotary shaft is coupled to the rotary shaft receiving hole is configured to be movable in the longitudinal direction of the long hole with respect to the rotary shaft.

The movable contact portion is moved in the longitudinal direction of the long hole with respect to the rotation axis by the elastic force of the main spring when the fixed contactor and the movable contactor are in contact, thereby increasing the contact pressure between the fixed contactor and the movable contactor. .

On the other hand, the opening and closing mechanism of the present invention, when the handle is rotated in the direction for the connection of the circuit, the lever, one end connected to the handle is in contact with the lever contact portion to press the movable contact portion to rotate about the rotating shaft, the latch Rotates in the same direction as the movable contact portion by the coupling spring so that the contact holding portion maintains contact with the lever and the lever contact portion, and the movable contactor contacts the fixed contactor by rotation of the movable contact portion, The movable contact is moved in the longitudinal direction of the long hole with respect to the rotation axis by the rotation of the contactor and the elastic force of the main spring to increase the contact pressure between the fixed contactor and the movable contactor.

Also, when the fixed contactor and the movable contactor are separated, the movable contact unit rotates about the rotational axis and moves in the longitudinal direction of the long hole by the elastic force of the main spring, thereby increasing the separation distance between the fixed contactor and the movable contactor. It is composed.

Furthermore, the opening and closing mechanism of the present invention further includes a trip mechanism coupled to the case, the latch further includes a trip contact portion contactable with the trip mechanism, and the trip contact portion is pressed by the trip mechanism when tripping the latch. Is rotated about the rotating shaft, the movable contact portion is rotated by the coupling spring, the fixed contactor and the movable contactor are separated by the rotation of the movable contact portion, and the movable contact portion is opened by the elastic force of the main spring. The separation distance between the fixed contact and the movable contact is increased by moving in the longitudinal direction of the lever, and the other end of the lever is moved by the rotation of the latch and the movable contact and the elastic force of the main spring to be coupled to one end of the lever. And rotate the handle in the blocking direction of the circuit.

Meanwhile, in the opening and closing mechanism of the circuit breaker of the present invention, the latch includes a first coupling protrusion to which one end of the coupling spring is coupled, and the movable contact portion is configured to include a second coupling protrusion to which the other end of the coupling spring is coupled. Here, the movable contact portion may be configured to further include a stopper protruding to contact the case.

In addition, the lever contact portion is recessed to form an end so that the other end of the lever is configured to be accommodated and maintained. In addition, the contact holding portion includes a contact end and a horizontal contact surface extending from the contact end, the contact end further comprises an inclined surface, the other end of the lever is in contact with the horizontal contact surface, the inclined surface and the lever contact portion to maintain contact It is configured to be.

The present invention has the following effects by the above configuration.

The present invention has the effect that the latch is pressed directly to the trip mechanism without the trip lever in a configuration that requires a separate trip lever in the conventional circuit breaker has the effect of reducing the accessories. In addition, a separate trip spring, which previously provided an elastic force between the latch and the trip lever, is not necessary in the embodiment of the present invention, which has the effect of reducing the accessories from three to two springs. As a result, as much space as a trip lever, which is a reduced part, is made, the arc extinguishing device can be made large enough, and the room for improving arc extinguishing performance is increased. In addition, assembling is simplified, improving work efficiency and reducing costs.

In addition, the movable contactor comes into contact with the fixed contactor by the rotation of the movable contact part, and the movable contactor moves in the long direction A of the long hole with respect to the rotation axis by the rotation of the movable contactor and the elastic force of the main spring, so that the fixed contactor contacts the movable contactor. The pressure is increased.

In addition, when the fixed contactor and the movable contactor are separated, the movable contact part rotates about the rotation axis by the elastic force of the main spring and moves in the long direction of the long hole, thereby increasing the separation distance B between the fixed contactor and the movable contactor. .

1 is a cross-sectional view of a conventional circuit breaker.
Figure 2 is a trip operation of the circuit breaker of the present invention.
Figure 3 is a normal operation of the circuit breaker of the present invention.
Figure 4 is a perspective view of the movable contact of the breaker opening and closing mechanism of the present invention.
Figure 5 is a perspective view of the latch of the breaker opening and closing mechanism of the present invention.
Figure 6 is an operation when tripping the movable contact of the breaker opening and closing mechanism of the present invention.
Figure 7 is a normal operation of the movable contact of the breaker opening and closing mechanism of the present invention.

Hereinafter, with reference to the accompanying drawings will be described a specific content for practicing the present invention through an embodiment of the present invention.

2 and 3 is an operation of the breaker of the present invention, Figure 4 is a perspective view of the movable contact of the breaker opening and closing mechanism of the present invention, Figure 5 is a perspective view of a latch of the breaker opening and closing mechanism of the present invention, Figures 6 and 7 The operation figure of the movable contact part of this invention is shown.

In the opening and closing mechanism of the small circuit breaker according to the present invention, a cross-sectional view of the small circuit breaker according to the present invention showing when it is in a circuit opening state (circuit opening) for better understanding will be described with reference to FIG.

The opening and closing mechanism of the small circuit breaker of the present invention includes a case 100, a handle 200, a fixed contact 400, a movable contact 300 including a movable contact 310, a lever 500, a rotating shaft 600, a latch It comprises a 800, the main spring 700 and the coupling spring (900).

The case 100 is a component that accommodates parts and insulates the outside. The handle 200 provides a means for manual opening and closing of the small circuit breaker. That is, the user grips the handle 200 and operates the on or off position, thereby connecting the circuit breaker from the power supply to the load side to the on position where the current can flow or from the power supply. The circuit to the load side can be cut off to operate in the off position where no current can flow.

The handle 200 is rotatably installed in the case. A handle operating tool (not shown) is provided on the upper surface of the case 100 to allow operation of the handle 200 to an on position or an off position, and the handle 200 is turned on or off within the range of the handle operating tool. Can be operated with These handles are rotated with respect to the case as shown in FIGS. 2 and 3 when the normal current flows and the abnormal current flows and trips, respectively.

The lever 500 is a component made of metal or synthetic resin having a 'M' shape as viewed from the side, and one end thereof is connected to the handle 200 as shown in FIGS. 2 and 3 and moves in accordance with the rotation of the handle. At this time, since the other end of the lever is in contact with the movable contact portion described later, the position of the movable contact portion is changed by the rotation of the handle. That is, in the normal state as shown in FIG. 3, the other end of the lever is moved in the right direction so that the movable contactor is in contact with the fixed contactor. In addition, during tripping, the lever is moved to the left side of the drawing as shown in FIG. 2 to rotate the movable contact portion counterclockwise so that the movable contactor is in a state where the fixed contactor is separated.

The movable contact portion 300 includes a lever contact portion 320 including the movable contact 310 at one end and the other end of the lever 800 at the other end thereof. The movable contact is disclosed in detail in FIG. 4.

The movable contact part 300 is rotatable to a position contacting the fixed contactor 400 or to be separated from the fixed contactor 400 to open and close the circuit. As shown in FIG. 4, the movable contact unit is provided with a movable contact 310 at a point of contact with the fixed contact.

The movable contact 310 and the fixed contact 400 are connected to a power supply or load side of a circuit (power circuit) as a terminal, and the movable contact 310 is electrically connected to the power supply side of the circuit. ) Is electrically connected to the load side of the circuit, and the movable contact 310 is electrically connected to the power supply side of the circuit when the fixed contactor 400 is in electrical contact with the load side of the circuit.

The movable contact portion includes a long shaft-shaped rotary shaft receiving hole (330). The rotary shaft 600 is coupled to the rotary shaft receiving hole 330 to rotate the movable contact with respect to the rotary shaft. Furthermore, the movable contact portion is movable in the longitudinal direction A of the long hole of the receiving hole with respect to the rotation axis as shown in FIG. This movement is caused by the elastic force of the main spring 700 to be described later when the fixed contact 400 and the movable contact 310, the movable contact portion 300 in the long direction (A) of the long hole with respect to the rotating shaft 600 Will be moved to). Accordingly, the contact pressure between the fixed contact 400 and the movable contact 310 is increased.

The rotary shaft 600 is coupled to the case can be fixed or integrally formed to serve as a rotary shaft of the movable contact portion and the latch to be described later.

Meanwhile, as shown in FIG. 5, the movable contact part may be recessed to form a stage, and may include a lever contact part 320 in which the other end of the lever may be accommodated and maintained. Since the lever contact portion is recessed to form an end, the other end of the lever is accommodated in the recessed portion, and the other end of the lever is pressed again by a latch to be described later to limit the movement of the lever.

Meanwhile, as shown in FIG. 4, the movable contact part may include a second coupling protrusion 340 to which the other end of the coupling spring to be described later is coupled. This configuration allows the coupling spring to be easily coupled to the movable contact.

In addition, as shown in FIG. 4, the movable contact part may be configured to include a stopper 350 protruding to contact the case. By such a configuration, the movable contact portion is limited in operation within a predetermined range, thereby preventing damage caused by excessive operation in advance.

The main spring 700 is coupled to one end of the case and the movable contact portion so as to generate an elastic force in the movable contact portion. In this embodiment, one end of the main spring has a ring shape and is fixed to the case by being caught by a protruding part of the case, and as shown in FIG. 4, the other part of the main spring is bent around the rotation shaft receiving hole of the movable contact portion. The end is caught. Accordingly, when the circuit is open, the upper part of the movable contact part is pulled to rotate about the rotating shaft so that the fixed contactor and the movable contactor are separated, maintain separation, and further increase the separation distance to be described later. On the other hand, while the circuit is closed, the upper portion of the movable contact portion is pulled, but the position of the lever acts as a contact pressure for further maintaining the contact state between the movable contactor and the fixed contactor. This will be described in more detail in the operation of this embodiment.

The latch 800 is connected to the other end of the lever 500, and rotates by power transmitted through the lever. A more detailed shape connection configuration of the latch 800 is shown in FIG. 5.

As shown in FIG. 5, the latch 800 has a rotation shaft receiving hole 840 and is rotatably coupled to the rotation shaft 600. A contact holding part 810 is formed at an upper end of the latch to support the other end of the lever to maintain contact with the lever contact part.

The contact holding part 810 includes a contact end 811 and a horizontal contact surface 812 extending from the contact end, and the contact end has an inclined surface 813 at a boundary with the horizontal contact surface. The other end of the lever is in contact with the horizontal contact surface 812, the inclined surface 813, and the lever contact portion 320. Accordingly, the lever does not return immediately but is seated by the latch and the movable contact to maintain the state of the handle constant.

Meanwhile, the latch includes a first coupling protrusion 830 to which one end of the coupling spring is coupled. As shown in FIG. 5, it has a shape that protrudes outwardly and is bent. The coupling spring is coupled thereto.

The coupling spring 900 is a spring having elasticity, having one end coupled to the latch 800 and the other end coupled to the movable contact 300 so that the latch and the movable contact have the same rotational direction. . As described above, the coupling spring is coupled to the second coupling protrusion 340 of the movable contact portion. Accordingly, the movable contact portion and the latch are rotatable in the same direction without being separated by a predetermined distance by the elastic force of the coupling spring.

2 illustrates a trip mechanism 450. The trip mechanism 450 is provided with a pressurizing means (not shown) operated by a solenoid to press the latch when tripping. Since the trip mechanism is a general configuration, a detailed description thereof will be omitted.

The latch 800 may further include a trip contact portion 820 that is in contact with the trip mechanism. As illustrated in FIG. 5, a tripping part in a plate shape protruding to the outside of the latch is provided at the bottom of the latch. The trip contact portion is pressurized by the pressing means of the trip mechanism so that the latch rotates during trip to induce rotation of the movable contact portion and cause the lever to move.

This configuration has the effect of reducing the accessories by pressing the latch directly to the trip mechanism without the need for a trip lever in a configuration in which a separate trip lever was required in a conventional breaker. In addition, a separate trip spring, which previously provided an elastic force between the latch and the trip lever, is not necessary in the embodiment of the present invention, which has the effect of reducing the accessories. As a result, as much space as a trip lever, which is a reduced part, is made, the arc extinguishing device can be made large enough, and the room for improving arc extinguishing performance is increased. In addition, assembling is simplified, improving work efficiency and reducing costs.

Hereinafter, with reference to the accompanying drawings will be described in more detail with respect to the configuration of the present invention through the operation of one embodiment of the present invention.

In the embodiment of the present invention, when the handle 200 is rotated in the direction for the connection of the circuit to the state of Figure 3 is the following operation.

When the handle 200 is rotated in the direction for the connection of the circuit. The lever 500, one end of which is connected to the handle, contacts the lever contact part 320 to press the movable contact part 300 to rotate about the rotating shaft 600. Accordingly, the latch 800 is rotated in the same direction as the movable contact portion by the coupling spring 900 so that the contact holding portion 810 maintains contact between the lever 500 and the lever contact portion 320.

The movable contactor is in contact with the fixed contactor by the rotation of the movable contact unit, and the movable contactor is moved in the long direction A of the long hole with respect to the rotating shaft by the rotation of the movable contactor and the elastic force of the main spring. The contact pressure between the contactor and the movable contactor is increased.

This is because the contact point of the movable contactor and the fixed contactor does not move as much as the moving distance in the long direction (A) of the long contact hole of the movable contact portion due to the elastic force of the main spring, so that pressure due to partial deformation of the movable contact portion such as bending occurs. The contact pressure is increased.

On the other hand, in the embodiment of the present invention, the following operation is performed in order to be in the state of FIG. 2 for shorting of the circuit at the time of trip.

When tripping, the tripping contact is pressed by the trip mechanism, the latch is rotated about the rotating shaft, the movable contact is rotated by the coupling spring, and the fixed contactor and the movable contactor are rotated by the rotation of the movable contacting part. Is separated and the movable contact is moved in the longitudinal direction of the long hole by the elastic force of the main spring to increase the separation distance between the fixed contact and the movable contact. That is, when the fixed contactor and the movable contactor are separated, the movable contact unit rotates about the rotational axis and moves in the longitudinal direction of the long hole by the elastic force of the main spring, so that the separation distance (B) of the fixed contactor and the movable contactor is separated. Will be increased.

This is because the movable contact portion rotates with respect to the rotation axis by the elastic force of the main spring and moves in the longitudinal direction of the long hole, and the movable contactor and the fixed contactor by the principle of the lever as long as the moving distance in the long direction A of the long contact portion of the movable contact portion. The separation distance (B) is to be increased.

Meanwhile, the other end of the lever is moved by the rotation of the latch and the movable contact portion and the elastic force of the main spring to rotate the handle coupled to one end of the lever in the blocking direction of the circuit.

Although the preferred embodiments of the present invention have been described above with reference to the accompanying drawings, the scope of the present invention is not to be construed as limited to such embodiments and / or drawings, and is determined by the matters set forth in the claims below. do. In addition, it should be clearly understood that improvements, changes, modifications, and the like apparent to those skilled in the art described in the claims are included in the scope of the present invention.

100: case 200: handle
300: movable contact 310: movable contact
400: fixed contact 450: trip mechanism
500: lever 600: rotation axis
700: main spring 800: latch
900: coupling spring

Claims (11)

In the case, the handle rotatably provided in the case, the opening and closing mechanism of the circuit breaker comprising a fixed contactor and a movable contactor,
A lever having one end connected to the handle;
A movable contact part including a movable contactor at one end and a lever contact part at which the other end of the lever is in contact with the other end;
A rotating shaft rotatably coupled to the movable contact portion;
A main spring coupled to one end of the case and the movable contact portion to generate an elastic force in the movable contact portion;
A latch rotatably coupled to the rotation shaft and including a contact holding portion for supporting the other end of the lever to maintain contact with the lever contact portion; And
And a coupling spring having one end coupled to the latch and the movable contact portion and the other end coupled to each other so that the latch and the movable contact portion have the same rotational direction. In the case, the handle rotatably provided in the case, the opening and closing mechanism of the circuit breaker comprising a fixed contactor and a movable contactor,
A lever having one end connected to the handle;
A movable contact part including a movable contactor at one end and a lever contact part at which the other end of the lever is in contact with the other end;
A rotating shaft rotatably coupled to the movable contact portion;
A main spring coupled to one end of the case and the movable contact portion to generate an elastic force in the movable contact portion;
A latch rotatably coupled to the rotation shaft and including a contact holding portion for supporting the other end of the lever to maintain contact with the lever contact portion;
A coupling spring having one end coupled to the latch and the movable contact portion and the other end coupled to each other such that the latch and the movable contact portion have the same rotation direction; And
Trip mechanism coupled to the case; opening and closing mechanism of a circuit breaker comprising a. The method according to claim 1 or 2,
The movable contact portion includes a long shaft-shaped rotating shaft receiving hole,
The rotating shaft is coupled to the rotating shaft receiving hole characterized in that the movable contact portion is movable in the longitudinal direction of the long hole with respect to the rotating shaft,
Switchgear of breaker. The method of claim 3,
When the fixed contactor and the movable contactor come into contact with each other, the movable contact portion moves in the longitudinal direction of the long hole with respect to the rotation axis by the elastic force of the main spring.
Characterized in that to increase the contact pressure of the fixed contact and the movable contact,
Switchgear of breaker. The method of claim 3,
When the fixed contactor and the movable contactor are separated, the movable contact unit rotates about the rotation axis by the elastic force of the main spring, and moves in the longitudinal direction of the long hole,
To increase the separation distance of the fixed contact and the movable contact,
Switchgear of breaker. The method of claim 4, wherein
If the handle rotates in the direction for the connection of the circuit,
The lever, one end of which is connected to the handle, contacts the lever contact part to press the movable contact part to rotate about the rotating shaft, and the latch rotates in the same direction as the movable contact part by the coupling spring so that the contact holding part is To maintain contact between the lever and the lever contact portion,
The movable contactor is in contact with the fixed contactor by the rotation of the movable contact unit, and the movable contactor is moved in the longitudinal direction of the long hole with respect to the rotary shaft by the rotation of the movable contactor and the elastic force of the main spring. Characterized in that to increase the contact pressure of the movable contact,
Switchgear of breaker. The method of claim 2,
The movable contact portion includes a long shaft-shaped rotary shaft receiving hole, the rotary shaft is coupled to the rotary shaft receiving hole is movable the movable contact portion in the longitudinal direction of the long hole with respect to the rotary shaft,
When the fixed contactor and the movable contactor are separated, the movable contact unit rotates about the rotational axis and moves in the longitudinal direction of the long hole by the elastic force of the main spring, thereby increasing the separation distance between the fixed contactor and the movable contactor,
The latch further includes a trip contact portion in contact with the trip mechanism,
When tripping, the tripping contact is pressed by the trip mechanism, the latch is rotated about the rotating shaft, the movable contact is rotated by the coupling spring, and the fixed contactor and the movable contactor are rotated by the rotation of the movable contacting part. Is separated and the movable contact portion is moved in the longitudinal direction of the long hole by the elastic force of the main spring to increase the separation distance between the fixed contact and the movable contact,
The other end of the lever is moved by the rotation of the latch and the movable contact portion and the elastic force of the main spring to rotate the handle coupled to one end of the lever in the blocking direction of the circuit,
Switchgear of breaker. The method according to claim 1 or 2,
The latch includes a first coupling protrusion to which one end of the coupling spring is coupled,
The movable contact portion is characterized in that it comprises a second engaging projection to which the other end of the coupling spring is coupled,
Switchgear of breaker. The method according to claim 1 or 2,
The movable contact portion is characterized in that it comprises a stopper protruding contact with the case,
Switchgear of breaker. The method according to claim 1 or 2,
The lever contact portion is recessed to form an end, characterized in that the other end of the lever can be accommodated and maintained,
Switchgear of breaker. The method according to claim 1 or 2,
The contact holding portion includes a contact end and a horizontal contact surface extending from the contact end,
The contact end further includes an inclined surface,
The other end of the lever is in contact with the horizontal contact surface, the inclined surface and the lever contact portion is characterized in that the contact is maintained,
Switchgear of breaker.
KR1020100103109A 2010-09-08 2010-10-21 A switching mechanism for circuit braker KR101158639B1 (en)

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CN201010280216.X 2010-09-08

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20210138296A (en) 2020-05-12 2021-11-19 우리산전 주식회사 Switching mechanism for circuit breake

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108242373A (en) * 2018-02-27 2018-07-03 首瑞（天津）电气设备有限公司 A kind of breaker
KR102539220B1 (en) * 2021-06-14 2023-06-01 차기만 Handle driving apparatus for a leakage breaker with automatic recovery function

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR920008728B1 (en) * 1989-01-06 1992-10-08 후지덴끼 가부시기가이샤 Circuit breaker
JPH08185784A (en) * 1994-12-27 1996-07-16 Nitto Kogyo Kk Circuit breaker for wiring
KR100390796B1 (en) 2000-12-08 2003-07-10 엘지산전 주식회사 Mccd moving contactor

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR920008728B1 (en) * 1989-01-06 1992-10-08 후지덴끼 가부시기가이샤 Circuit breaker
JPH08185784A (en) * 1994-12-27 1996-07-16 Nitto Kogyo Kk Circuit breaker for wiring
KR100390796B1 (en) 2000-12-08 2003-07-10 엘지산전 주식회사 Mccd moving contactor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20210138296A (en) 2020-05-12 2021-11-19 우리산전 주식회사 Switching mechanism for circuit breake

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