KR20160143964A - Circuit Breaker - Google Patents

Circuit Breaker Download PDF

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Publication number
KR20160143964A
KR20160143964A KR1020150079752A KR20150079752A KR20160143964A KR 20160143964 A KR20160143964 A KR 20160143964A KR 1020150079752 A KR1020150079752 A KR 1020150079752A KR 20150079752 A KR20150079752 A KR 20150079752A KR 20160143964 A KR20160143964 A KR 20160143964A
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KR
South Korea
Prior art keywords
switch
housing
circuit breaker
cradle
sliding plate
Prior art date
Application number
KR1020150079752A
Other languages
Korean (ko)
Other versions
KR101700576B1 (en
Inventor
김명수
Original Assignee
현대중공업 주식회사
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Filing date
Publication date
Application filed by 현대중공업 주식회사 filed Critical 현대중공업 주식회사
Priority to KR1020150079752A priority Critical patent/KR101700576B1/en
Publication of KR20160143964A publication Critical patent/KR20160143964A/en
Application granted granted Critical
Publication of KR101700576B1 publication Critical patent/KR101700576B1/en

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02—Details
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B11/00—Switchgear having carriage withdrawable for isolation
    • H02B11/12—Switchgear having carriage withdrawable for isolation with isolation by horizontal withdrawal
    • H02B11/127—Withdrawal mechanism

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Breakers (AREA)

Abstract

The present invention relates to a circuit breaker, and a circuit breaker according to the present invention includes a cradle housing for providing positional information of a circuit breaker body, a circuit breaker body movably provided in the cradle housing, And a position switch provided in the cradle housing in contact with the circuit breaker main body and provided to generate an electrical signal by movement of the circuit breaker main body.

Description

Circuit Breaker

The present invention relates to a circuit breaker, and more particularly, to a circuit breaker configured to provide positional information of a circuit breaker body.

Large buildings, factories, ships, etc. are supplied with high-voltage currents. Since a high voltage current can cause a serious accident, a circuit breaker is installed in large buildings, factories, ships and the like to block overcurrent or short circuit current.

A conventional circuit breaker is installed in a distribution line, and is configured to shut off the circuit when an abnormal current such as an overcurrent or a short circuit occurs.

These circuit breakers can be classified into fixed type and withdrawn type. The fixed circuit breaker is configured such that the circuit breaker main body is fixed to the cradle and is not movable, but the circuit breaker can be drawn or drawn out of the cradle since the circuit breaker is configured to move the circuit breaker body from the cradle.

In such a draw-out type circuit breaker, the state of the circuit breaker may vary according to the position of the circuit breaker body in the cradle, and the state of the circuit breaker is changed stepwise until the breaker main body completely enters the cradle and is energized.

The state where the main circuit and the control circuit are disconnected before the breaker main body of the lead-out type circuit breaker is pulled into the cradle is referred to as the disconnect position, and then the breaker main body is drawn into the cradle and the control power is connected, A possible state is called the test position, and the state in which the main circuit is fully connected in the state where the breaker main body is completely drawn into the cradle and the control power is connected is called the connection position.

Therefore, it is very important to grasp the positional information of the circuit breaker main body in the cradle in using the withdrawable circuit breaker which moves the circuit breaker body on the cradle.

An object of the present invention is to provide positional information of a circuit breaker body on a cradle on which a circuit breaker body is housed, thereby facilitating control of the circuit breaker.

It is also an object of the present invention to provide a simple and rigid assembly structure of a circuit breaker.

Thus, the use of the circuit breaker is improved and the manufacturing cost is reduced.

The present invention provides the following circuit breaker.

A circuit breaker according to a preferred embodiment of the present invention includes a cradle housing, a breaker body movably provided in the cradle housing, And a position switch provided in the cradle housing in contact with the circuit breaker main body and provided to generate an electrical signal by movement of the circuit breaker main body.

More preferably, the position switch includes: a switch housing having a receiving space and fixed to the cradle housing; a switch body provided in the switch housing and provided to generate an electrical signal; And sliding means provided to move in the switch housing, the sliding body being provided to urge the switch block to generate an electrical signal.

More preferably, the sliding means comprises: a sliding plate provided to move in the accommodating space of the switch housing; and a sliding plate provided to contact the sliding plate and the circuit breaker main body, A driving member provided to be moved; And a switch pusher installed on the sliding plate and moved together with the sliding plate and provided to urge the switch block.

More preferably, the sliding means may further comprise a guide roller installed on the switch housing so as to face the switch pusher, the guide roller being slidably provided to guide movement of the switch pusher.

More preferably, the sliding unit may further include a guide hole which is installed in the direction of movement of the sliding plate in the switch housing, and guides the movement of the sliding plate.

More preferably, the one end is fixed to the switch housing and the other end is connected to the drive member, and when the breaker main body is pulled out from the cradle housing, the elasticity provided to move the drive member in the pull- Member; < / RTI >

More preferably, the cradle housing includes: a driving hole provided so as to penetrate the driving member so as to be inserted therein; And a plurality of switch fastening holes penetrating the periphery of the drive hole, the switch fastening being provided to be coupled with the position switch.

More preferably, the switch housing includes a plurality of fastening guide members protruding from one side of the cradle housing in contact with the cradle housing, and the fastening guide members may be respectively inserted and coupled to the switch fastening holes .

More preferably, the fastening guide member may be provided such that an end portion of the fastening guide member inserted into the switch fastening portion is bent.

According to the present invention, it is possible to grasp the infeed or withdrawal position information of the breaker main body, thereby facilitating control of the circuit breaker.

In addition, since a solid structure can be maintained with a simple structure, it is possible to reduce component cost and contribute to reduction in manufacturing cost.

1 is an exploded perspective view of a circuit breaker according to the present invention.
Fig. 2 is a combined state view of a circuit breaker according to the present invention. Fig.
3 is a perspective view of a position switch according to the present invention.
4 is a perspective view of a circuit breaker according to the present invention.
5 is a partial enlarged view of a cradle housing of a circuit breaker according to the present invention.
FIG. 6 is a combined state diagram of a circuit breaker according to the present invention. FIG.

In order to facilitate an understanding of the description of the embodiments of the present invention, elements denoted by the same reference numerals in the accompanying drawings are the same element, and among the elements having the same function in each embodiment, Respectively.

Further, in order to clarify the gist of the present invention, a description of elements and techniques well known in the prior art will be omitted, and the present invention will be described in detail with reference to the accompanying drawings.

It is to be understood, however, that the spirit and scope of the present invention are not limited to the embodiments shown, but may be suggested by those skilled in the art in other forms, additions, or alternatives, . In addition, the following describes an embodiment of a circuit breaker, in particular, a circuit breaker, but this is not intended to limit the invention.

1, the circuit breaker 100 includes a cradle housing 110 and a breaker body 120 that is drawn into the cradle housing 110 or drawn out from the inside of the cradle housing 110 .

When the circuit breaker body 110 is connected to the inside of the cradle housing 110 connected to the busbars, the line can be energized or disconnected by opening and closing the circuit breaker. In order to easily draw the breaker main body 120 into the cradle housing 110, a moving carriage 121 having a moving wheel 121a may be provided on one side of the breaker powder 120. [

A movable rail (not shown) corresponding to the movement wheel 121a may be provided on one surface of the cradle housing 110 facing the movement wheel 121a to move the breaker body 120 more easily There is an advantage.

The breaker main body 120 forms a positional relationship with the cradle housing 110 in three places. First, the breaker main body 120 has a disconnecting position where the main circuit and the control circuit are separated from each other and a disconnecting position where the control power source is connected, And the connecting position where the main circuit is fully connected to allow the cradle housing 110 and the breaker main body 120 to be energized in a state where the control power source is connected.

In order to control the circuit breaker, it is very important to grasp the positional relationship between the breaker body 120 and the cradle housing 110. In the present invention, the positional relationship between the breaker body and the cradle housing To be delivered.

That is, as shown in FIG. 2, the position switch 130 is fastened to the plurality of housing frames 115 constituting the cradle housing 110 so that the position of the circuit breaker body 120 can be grasped. The position switch 130 can be brought into contact with the circuit breaker main body 120 by passing through the housing frame 115 of the cradle housing 110 and is provided to generate an electrical signal according to the movement of the circuit breaker main body 120 .

3 and 4 show a position switch 130 according to a preferred embodiment of the present invention. The position switch 130 includes a switch housing 131 having a receiving space S and fixed to the cradle housing 110 and a switch block (not shown) And a sliding means 130a which is provided to move in the switch housing and which is provided to press the switch block so that the switch body 132 generates an electrical signal.

The switch body 132 generates an electrical signal in accordance with the disconnecting position, the test position, and the connecting position of the breaker main body 120 in the cradle housing 110. In response to this signal, the limit switch 132, which is electrically connected to the switch body 132, The position information of the circuit breaker main body 120 can be outputted while the circuit breaker (not shown) is operated.

Accordingly, in order to generate a signal by pressing a switch block (not shown) of the switch body 132 disposed at the three positions of the circuit breaker main body 120, And sliding means 130a moving in conjunction with the sliding means 130a.

The sliding means 130a includes a sliding plate 133 which is provided to move in the accommodating space S of the switch housing and a sliding plate 133 which contacts the sliding plate and the circuit breaker body 120, And a switch pusher 135 provided on the sliding plate to move together with the sliding plate and provided to press the switch block (not shown) provided on the switch body 132, .

The driving member 134 connected to the circuit breaker main body 120 moves the sliding plate 133 so that the switch pusher 135 moves, Thereby pushing the switch block (not shown) of the main body 132.

A plurality of guide rollers 136 are provided on the switch housing 131 so as to face the switch pusher 135 and are slidably provided on the switch pusher 135. The sliding plate 133 can be moved more easily and more easily. However, it should be understood that the present invention is not limited thereto, but may be appropriately modified by those skilled in the art.

The sliding plate 133 is provided with a pusher coupling part 133a which is inserted into the sliding plate 133 so that the switch pusher can be engaged therewith. A plurality of pusher locking parts 133a may be provided to display all three positions of the breaker main body 120. The user may insert the switch pusher into a specific pusher locking part 133a as necessary Can be combined.

When the fastening bolt 35c is fastened to the bolt fastener 135b of the switch pusher inserted into the pusher fastening portion, the switch pusher can be fixed to the sliding plate 133. [ At this time, in order to allow the switch pusher 135 to be easily inserted into the pusher locking portion 133a and to be able to be brought into close contact with the sliding plate 133, the switch pusher 135 is protruded at a predetermined height, The first bent portion 135a may be provided.

According to the first bent portion 135a of the switch pusher 135 thus configured, not only the assembling degree that is deteriorated due to the tolerance of each component to be assembled can be compensated, but also the driving member 134 can maintain the assembled state even when the sliding plate 133 moves.

When the breaker main body 120 is pulled out of the cradle housing 110, the sliding plate 133 is moved by pushing the driving member 134. When the breaker main body 120 is pulled out of the cradle housing 110 An elastic member 140 may be provided to return the sliding plate 133 to its original position.

One side of the elastic member 140 is fixed to the switch housing 131 and the other side is connected to the driving member 134 and is extended or contracted as the circuit breaker main body 120 moves. Accordingly, when the breaker main body 120 is disengaged from the drive member 134, the drive member 134 can be pulled while being contracted by the elasticity, It is possible to return to the state before the entry.

4, a bolt fastening member 131a coupled to the cradle housing is provided at one side of the switch housing of the position switch 130 in a manner to be described later, And a bolt fastening part 131b.

In addition, a fastening guide member 139 is provided on one side of the switch housing so that the position switch 130 can be firmly coupled with the cradle housing by a simple method.

5, the housing frame 115 constituting the cradle housing 110 is provided with a guide hole 111 and a plurality of switch fasteners 112 Is provided.

The driving member 134 is configured to allow the driving member 134 to be in contact with the circuit breaker main body 120 so that the driving member 134 can move along with the movement of the circuit breaker main body 120, .

The plurality of switch fasteners 112 includes a first fastening hole 112a into which a bolt passing through the bolt fastening hole 131b of the bolt fastening member 131a can be inserted, And can be provided to the second fastener 112b which can be inserted.

6, when the bent portion 139a of the fastening guide member 139 is brought into close contact with the second fastening hole 112b, the position switch 130 is brought into close contact with the housing frame 115 without a plurality of parts And it is possible to prevent the switch housing 131 from being pushed as the breaker main body 120 moves.

In addition, there is an effect that the position switch 130 can be firmly fixed to the housing frame 115 by inserting only one bolt into the body fastener 112a and the bolt fastener 131b.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention as defined in the appended claims. It will be apparent to those of ordinary skill in the art.

100: circuit breaker 110: cradle housing
120: breaker main body 130: position switch
130a: Sliding means 131: Switch housing
132: switch body 136: guide roller
137: Guide hole 140: Elastic member

Claims (9)

Cradle housing;
A breaker body movably installed in the cradle housing; And
A position switch provided in the cradle housing in contact with the circuit breaker main body and provided to generate an electrical signal by movement of the circuit breaker main body;
Circuit breaker.
The method according to claim 1,
The position switch includes:
A switch housing having a receiving space and fixed to the cradle housing;
A switch body provided in the switch housing, the switch body being provided to generate an electrical signal; And
Sliding means provided to move in the switch housing, the sliding body being provided to urge the switch block to generate an electrical signal;
≪ / RTI >
3. The method of claim 2,
Wherein the sliding means comprises:
A sliding plate provided to move in an accommodating space of the switch housing;
A driving member provided to be in contact with the sliding plate and the circuit breaker body, the driving member being provided to move the sliding plate when the circuit breaker body moves; And
A switch pusher installed on the sliding plate and moving together with the sliding plate and provided to urge the switch block;
≪ / RTI >
The method of claim 3,
Wherein the sliding means comprises:
A guide roller installed in the switch housing to face the switch pusher, the guide roller being slidably provided to guide movement of the switch pusher;
≪ / RTI >
5. The method of claim 4,
Wherein the sliding means comprises:
A guide hole provided in the switch housing in a moving direction of the sliding plate, the guide hole guiding movement of the sliding plate;
≪ / RTI >
6. The method according to any one of claims 3 to 5,
An elastic member provided on one side thereof to be fixed to the switch housing and on the other side to be connected to the driving member so as to move the driving member in a drawing direction of the breaker body when the breaker body is drawn out from the cradle housing;
≪ / RTI >
The method according to claim 6,
The cradle housing includes:
A driving member provided so as to penetrate the driving member to be inserted and moved; And
A plurality of switch fastening holes provided in the guide groove so as to be engaged with the position switches;
≪ / RTI >
8. The method of claim 7,
The switch housing includes:
And a plurality of fastening guide members protruding from one side of the cradle housing in contact with the cradle housing,
The fastening guide member
And wherein the circuit breaker is inserted into the switch fastener.
9. The method of claim 8,
The fastening guide member
And an end portion inserted into the switch fastener is provided to be bent.
KR1020150079752A 2015-06-05 2015-06-05 Circuit Breaker KR101700576B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020150079752A KR101700576B1 (en) 2015-06-05 2015-06-05 Circuit Breaker

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150079752A KR101700576B1 (en) 2015-06-05 2015-06-05 Circuit Breaker

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KR20160143964A true KR20160143964A (en) 2016-12-15
KR101700576B1 KR101700576B1 (en) 2017-02-01

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20220061705A (en) * 2020-11-06 2022-05-13 엘에스일렉트릭(주) Vacuum circuit breaker

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20100080050A (en) * 2008-12-31 2010-07-08 엘에스산전 주식회사 The position switch in circuit breaker
KR20100079904A (en) * 2008-12-31 2010-07-08 엘에스산전 주식회사 Position detecting apparatus for circuit breaker

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20100080050A (en) * 2008-12-31 2010-07-08 엘에스산전 주식회사 The position switch in circuit breaker
KR20100079904A (en) * 2008-12-31 2010-07-08 엘에스산전 주식회사 Position detecting apparatus for circuit breaker

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20220061705A (en) * 2020-11-06 2022-05-13 엘에스일렉트릭(주) Vacuum circuit breaker

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KR101700576B1 (en) 2017-02-01

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