KR20160134937A - Circuit breaker - Google Patents

Circuit breaker Download PDF

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Publication number
KR20160134937A
KR20160134937A KR1020150066899A KR20150066899A KR20160134937A KR 20160134937 A KR20160134937 A KR 20160134937A KR 1020150066899 A KR1020150066899 A KR 1020150066899A KR 20150066899 A KR20150066899 A KR 20150066899A KR 20160134937 A KR20160134937 A KR 20160134937A
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KR
South Korea
Prior art keywords
handle
stopper
handle block
block
base frame
Prior art date
Application number
KR1020150066899A
Other languages
Korean (ko)
Other versions
KR101698815B1 (en
Inventor
장춘오
Original Assignee
현대중공업 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 현대중공업 주식회사 filed Critical 현대중공업 주식회사
Priority to KR1020150066899A priority Critical patent/KR101698815B1/en
Priority to CN201610282467.9A priority patent/CN106098482B/en
Publication of KR20160134937A publication Critical patent/KR20160134937A/en
Application granted granted Critical
Publication of KR101698815B1 publication Critical patent/KR101698815B1/en

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Classifications

    • 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
    • H01H33/46—Interlocking mechanisms
    • H01H33/50—Interlocking mechanisms for interlocking two or more parts of the mechanism for operating contacts
    • 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
    • H01H33/42—Driving mechanisms

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  • Breakers (AREA)

Abstract

The present invention relates to a circuit breaker capable of preventing a handle for operating a power connection unit from being inserted. The circuit breaker includes: the power connection unit disposed on a body provided with a first terminal to draw the body into or from a cradle on which a second terminal is formed; an operation handle inserted into the power connection unit to operate the power connection unit for moving the body; and a locking unit provided in the power connection unit to prevent the operating handle from being inserted into the power connection unit. Thus, since the operating handle is prevented from being inserted into the power connection unit for moving the body, the body may be prevented from unintentionally being drawn out so that a negligent accident is prevented.

Description

Circuit breaker {CIRCUIT BREAKER}

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a circuit breaker, and more particularly, to a circuit breaker capable of blocking insertion of a handle for operating a power connecting means.

In general, circuit breakers are devices that automatically shut down the circuit to prevent damage from overloading or short circuits in the electrical circuit.

Among the circuit breakers, an air circuit breaker (ACB) disconnects the movable contact from the stationary contactor when a large current flows due to a failure in a line somewhere in the line, and an arc is generated at this time. Is blown off with compressed air.

The circuit breaker is formed of a cradle in which a fixed contact is formed and a body in which a movable contact is installed, and the terminal of the cradle and the terminals of the body are electrically connected to each other while the body is drawn into the cradle.

At this time, an operation handle such as a wrench is fastened to the power connection means provided on the body for pulling or pulling the body from the cradle, and the operation handle is rotated to move the body.

However, there is a problem that a user can easily pull out the body by inserting an operation handle into the power connection means, and a safety accident may occur due to an instantaneous short circuit breaker.

Korean Patent Registration No. 0914206

It is an object of the present invention to provide a circuit breaker which is designed to solve the above-mentioned problems and which can prevent the operation handle from being inserted into the power connection means for pulling in or out the body.

In order to accomplish the above object, a circuit breaker according to a preferred embodiment of the present invention includes a circuit breaker disposed on a body having a first terminal, and a cradle having a second terminal contacting the first terminal, ; An operation handle inserted in the power connection means and operating the power connection means to move the body; And locking means provided on the power connection means for blocking the operation handle from being inserted into the power connection means.

The power connection means includes a base frame coupled to the body; A screw coupled to the base frame so as to be rotatable and having a handle engagement hole formed at one end thereof to receive the operation handle; And a movable frame coupled to the screw and linearly moving in response to the rotational motion of the screw to generate power for moving the body.

Wherein the locking means includes a handle block formed with a handle insertion hole into which the manipulation handle is inserted, and disposed on a front side of one side of the screw to be slidably coupled to the base frame; And a movable member disposed on the base frame and slidably moving the handle block such that the handle insertion hole is aligned with the handle engagement hole.

The locking means includes an elastic member that applies an elastic force to one side of the handle block and the other side of which is coupled to the base frame to move the handle block to a position where the handle insertion hole does not coincide with the handle engagement hole. ; ≪ / RTI >

Furthermore, the locking means may include a stopper disposed at one end of the handle block in the base frame, and restricting movement of the handle block.

Wherein the stopper is engaged with the base frame so as to slide on the base frame, the groove portion and the protrusion are formed, and when the groove portion is positioned at one end of the handle block, the stopper allows the movement of the handle block, The movement of the handle block can be restrained.

The stopper may further include a stopper fixing member for fixing the stopper so that the stopper does not move in a state where the protrusion is located at one end of the handle block.

And an elastic member disposed between the stopper and the base frame to apply an elastic force so that the groove of the stopper is positioned at one end of the handle block.

According to the circuit breaker of the present invention, it is possible to prevent the operation handle from being inserted into the power connecting means for moving the body, thereby preventing the unintentional body from being drawn out, thereby preventing the safety accident.

1 is an exploded perspective view schematically showing a circuit breaker according to an embodiment of the present invention;
Fig. 2 is an exploded perspective view schematically showing the power connecting means and the locking means in the circuit breaker according to the embodiment of the present invention. Fig.
3 is a plan view schematically showing a closed state of a locking means in a circuit breaker according to an embodiment of the present invention,
4 is a plan view schematically showing the open state of the locking means in the circuit breaker according to the embodiment of the present invention,
5 is a plan view schematically showing an open state of a stopper of a locking means in a circuit breaker according to another embodiment of the present invention,
6 is a plan view schematically showing a closed state of a stopper of a locking means in a circuit breaker according to another embodiment of the present invention,
7 is a plan view schematically showing a state in which a stopper of a locking means is fixed in a circuit breaker according to another embodiment of the present invention.

In order to facilitate understanding of the features of the present invention, a circuit breaker according to an embodiment of the present invention will be described in detail below.

It should be noted that, in order to facilitate understanding of the embodiments described below, reference numerals are added to the constituent elements of each of the accompanying drawings, and the same constituent elements are denoted by the same reference symbols whenever possible . In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

Hereinafter, a specific embodiment of the present invention will be described with reference to the accompanying drawings.

1 is an exploded perspective view schematically showing a circuit breaker according to an embodiment of the present invention. Fig. 2 is an exploded perspective view schematically showing power connecting means and locking means in a circuit breaker according to an embodiment of the present invention. Fig. 3 and Fig. 4 are schematic views showing the closing and opening states of the locking means in the circuit breaker, As shown in Fig.

1 to 4, a circuit breaker 1 according to an embodiment of the present invention includes a first terminal (not shown) disposed on a body 10 having a first terminal (not shown) The power connecting means 100 inserted into or withdrawn from the cradle 20 on which the body 10 is formed and the body 10 inserted or drawn out from the cradle 20; And an operating handle H for operating the power connection means 100 and a locking means 200 provided on the power connection means 100 and blocking the operation handle H from being inserted into the power connection means 100 do.

The circuit breaker 1 is formed of a body 10 on which a first terminal (not shown) or a movable contact is installed and a cradle 20 on which a second terminal (not shown) The terminals provided on the cradle 20 and the terminals provided on the body 10 are electrically connected while the body 10 is drawn into the cradle 20.

The operation handle H such as a wrench is fastened to the power connection means 100 provided on the body 10 to pull the body 10 from the cradle 20, H to rotate the body 10.

The structure in which the operation handle H is inserted into the power connection means 100 and the body 10 is moved by the power generated by the power connection means 100 by rotating the operation handle H Known methods can be applied.

The power connecting means 100 includes a base frame 110 fastened to the body 10 and a handle fastening hole 110 fastened to the base frame 110 to be rotatable, And a movable frame (120) which is coupled to the screw (120) and generates power for moving the body (10) in a linear movement corresponding to the rotational motion of the screw (120) 130).

The structure of the power connection means 100 for drawing or pulling the body 10 into or out of the cradle 20 is not limited thereto and the operation handle H may be inserted into the screw 120, And may be provided in any configuration capable of moving the body 10 by rotating the operation handle H.

The locking means 200 is formed with a handle insertion hole 211 into which the operation handle H is inserted and is disposed in front of the handle coupling hole 121 of the screw 120 to slide on the base frame 110 And the handle block 210 is slidably moved so as to move to a position where the handle insertion hole 211 is aligned with the handle coupling hole 121. [ And a movable member 220 for supporting the movable member.

The handle block 210 is formed in a rectangular plate shape and includes a handle insertion hole 211 into which the operation handle H is inserted and a movable member insertion hole 212 into which the movable member 220 can be inserted Respectively.

The handle block 210 is formed with protrusions 213 on both sides in the longitudinal direction and inserted into the guide rails 111 formed on the base frame 110 to be engaged with the screw 120 in the longitudinal direction of the screw 120 It can slide in a vertical direction.

Here, the guide rail 111 of the base frame 110 is formed in front of one end of the screw 120, that is, in front of an end of the screw 120 where the handle coupling hole 121 is formed, So that the handle block 210 is slidably coupled to the rail 111.

In addition, the guide rail 111 is formed only in a predetermined region so that the handle block 210 moves even though it has a certain range. The handle insertion hole 211 of the handle block 210 moves to a position where the handle insertion hole 211 coincides with the handle coupling hole 121 of the screw 120 and the handle insertion hole 211 moves to the handle coupling hole 121 To the position that does not coincide with the position of the center of gravity.

The handle block 210 is reciprocally moved on the guide rail 111 so that the handle insertion hole 211 of the handle block 210 coincides with the handle coupling hole 121 of the screw 120, The handle coupling hole 121 is positioned so as to be able to fasten the operation handle H to the coupling hole 121 or the handle insertion hole 211 is positioned to be offset from the handle coupling hole 121, The block 210 is blocked and the operation handle H can not be inserted into the handle coupling hole 121.

The movable member 220 includes a head portion 221 that is larger than the movable member insertion hole 212 of the handle block 210 and a movable member insertion hole 212 protruding from one side of the head portion 221, 212, respectively.

The base frame 110 is provided with a movable member support portion 112 adjacent to one end of the screw 120 and capable of supporting the pressing portion 222 of the movable member 220 inserted therein.

When the handle block 210 moves left and right in a state where the pressing portion 222 of the movable member 220 is inserted into the movable member insertion hole 212 of the handle block 210, 222). ≪ / RTI >

The handle block 210 protrudes rearward at one end of the handle block 210. The handle block 210 is pushed by the pressing portion 222 of the movable member 220 to move the handle block 210 slidably, ).

One side of the locking means 200 is fastened to the handle block 210 and the other side thereof is fastened to the elastic member fastening hole 113 of the base frame 110. The handle insertion hole 211 is fastened to the handle fastening hole 211, And an elastic member (230) for applying an elastic force to move the handle block (210) to a position that does not coincide with the handle block (121).

That is, when the handle block 210 is pressed to the left with reference to the drawing, the handle insertion hole 211 does not coincide with the handle coupling hole 121. When the handle block 210 is brought into close contact with the right handle, The insertion hole 211 is aligned with the handle coupling hole 121.

The handle block 210 is brought into close contact with the left side by the elastic member 230 so that the handle insertion hole 211 does not coincide with the handle coupling hole 121, When the movable member 220 is inserted through the movable member insertion hole 212 of the handle block 210, the pressing portion of the movable member 220 presses the movable portion 214 of the handle block 210, And the handle insertion hole 211 is aligned with the handle coupling hole 121.

That is, the handle coupling hole 121 is always closed by the handle block 210, and when the movable member 220 is inserted, the handle block 210 moves and the handle coupling hole 121 Is opened.

5 and 6 are plan views schematically showing the open and closed states of the stopper of the locking means in the circuit breaker according to another embodiment of the present invention. The circuit breaker is provided in the same configuration as that described in the circuit breaker according to the embodiment of the present invention described above, and only the stopper is newly constructed.

5 and 6, the locking means of the circuit breaker according to another embodiment of the present invention is disposed at one side of the handle block 210 in the base frame 110, and the movement of the handle block 210 And a stopper 300 for restricting rotation.

The stopper 300 is fastened to the base frame 110 so as to slide in a direction parallel to the longitudinal direction of the screw 120. The stopper 300 is formed with a groove 310 and a protrusion 320, When the handle block 210 is positioned at one end 215 of the handle block 210 and the protrusion 320 is positioned at one end 215 of the handle block 210, And to constrain movement of block 210.

An elastic member is disposed between the stopper 300 and the base frame 110 and applies an elastic force so that the groove 310 of the stopper 300 is positioned at one end 215 of the handle block 210. (340) may be provided.

That is, the elastic member 340 allows the stopper 300 to always position the groove 310 at one end 215 of the handle block 210 and move the stopper 300, if necessary, So that the protrusion 320 is positioned at one end 215 of the handle block 210 so that the handle block 210 is prevented from moving.

7 is a plan view schematically showing a state in which a stopper of a locking means is fixed in a circuit breaker according to another embodiment of the present invention.

7, the stopper 300 includes a stopper fixing member 400 (not shown) for fixing the stopper 300 in a state where the protrusion 320 is located at one end 215 of the handle block 210, May be provided. Here, the stopper fixing member 400 may be provided with a lock or the like so as to double-block the release of the stopper 300.

The cover 140 is fastened to the upper surface of the base frame 110 and the stopper 300 is positioned at one end 215 of the handle block 210 The fixing member insertion portion 330 is formed at an end of the stopper 300 protruding outward from the stopper 300 so that the stopper 300 is fixed to the fixing member insertion portion 330, The member 400 is inserted.

The stopper fixing member 400 is formed to be larger than the thickness of the base frame 110 and the cover 140. The stopper fixing member 400 is moved in the direction in which the stopper 300 is inserted by the elastic member 340 The stopper fixing member 400 is supported at the ends of the base frame 110 and the cover 140 to prevent the stopper 300 from being inserted.

In this configuration, the stopper 300 is fixed by the stopper fixing member 400 in a pulled state, so that even when the movable block 220 is pressed, (320) and can not move.

When the user needs to insert an operation handle H into the handle coupling hole 121 of the screw 120, the stopper fixing member 400 is removed, The groove 310 of the stopper 300 is positioned at one end 215 of the handle block 210 so that the handle block 210 can be moved. The handle block 210 is moved in the direction of the stopper 300 by pressing the movable member 220 so that the handle insertion hole 211 is aligned with the handle coupling hole 121, The hole 121 is opened so that the operation handle H can be inserted into the handle coupling hole 121.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. It is to be understood that various changes and modifications may be made without departing from the scope of the appended claims.

H: Operation handle 1: Circuit breaker
10: Body 20: Cradle
100: power connection means 110: base frame
120: screw 121: handle fastening hole
130: movable frame 140: cover
200: locking means 210: handle block
211: handle insertion hole 212: movable member insertion hole
213: protrusion 214: moving part
215: one end 220: movable member
221: Head part 222:
230, 340: elastic member 300: stopper
310: grooves 320: protrusions
330: fixing member insertion portion 400: stopper fixing member

Claims (8)

A power connection means which is disposed in a body having a first terminal and which draws or draws the body into a cradle in which a second terminal is connected to the first terminal;
An operation handle inserted in the power connection means and operating the power connection means to move the body; And
Locking means provided on the power connection means for blocking the operation handle from being inserted into the power connection means;
Circuit breaker.
The method according to claim 1,
The power connection means includes:
A base frame coupled to the body;
A screw coupled to the base frame so as to be rotatable and having a handle engagement hole formed at one end thereof to receive the operation handle; And
A movable frame fastened to the screw and linearly moving corresponding to the rotational motion of the screw to generate power for moving the body;
≪ / RTI >
3. The method of claim 2,
Wherein the locking means comprises:
A handle block having a handle insertion hole into which the manipulation handle is inserted, and a handle block disposed in front of one side of the screw and fastened to slide on the base frame; And
A movable member disposed on the base frame and slidably moving the handle block such that the handle insertion hole is aligned with the handle engagement hole;
≪ / RTI >
The method of claim 3,
Wherein the locking means comprises:
An elastic member that applies an elastic force such that one side of the handle block is fastened to the handle block and the other side of the handle block is fastened to the base frame to move the handle block to a position where the handle insertion hole does not coincide with the handle fastening hole;
≪ / RTI >
The method of claim 3,
Wherein the locking means comprises:
A stopper disposed at one end of the handle block in the base frame and restricting movement of the handle block;
≪ / RTI >
6. The method of claim 5,
The stopper
A groove portion and a protrusion are formed so as to slide on the base frame and allow the movement of the handle block when the groove portion is located at one end of the handle block and when the protrusion is located at one end of the handle block And restrains movement of the handle block.
The method according to claim 6,
The stopper
A stopper fixing member for fixing the stopper to prevent the stopper from moving when the protrusion is located at one end of the handle block;
≪ / RTI >
The method according to claim 6,
An elastic member disposed between the stopper and the base frame to apply an elastic force so that the groove of the stopper is positioned at one end of the handle block;
≪ / RTI >

KR1020150066899A 2015-04-30 2015-05-13 Circuit breaker KR101698815B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
KR1020150066899A KR101698815B1 (en) 2015-05-13 2015-05-13 Circuit breaker
CN201610282467.9A CN106098482B (en) 2015-04-30 2016-04-29 The insertion of breaker and withdrawing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150066899A KR101698815B1 (en) 2015-05-13 2015-05-13 Circuit breaker

Publications (2)

Publication Number Publication Date
KR20160134937A true KR20160134937A (en) 2016-11-24
KR101698815B1 KR101698815B1 (en) 2017-02-02

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ID=57705767

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020150066899A KR101698815B1 (en) 2015-04-30 2015-05-13 Circuit breaker

Country Status (1)

Country Link
KR (1) KR101698815B1 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100914206B1 (en) 2007-08-21 2009-08-27 엘에스산전 주식회사 Draw in and out apparatus for air circuit breaker
KR20110015920A (en) * 2009-08-10 2011-02-17 대영정공(주) Withdrawable device for circuit breaker
KR20120024066A (en) * 2010-09-03 2012-03-14 엘에스산전 주식회사 Draw-out safety apparatus for circuit breaker

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100914206B1 (en) 2007-08-21 2009-08-27 엘에스산전 주식회사 Draw in and out apparatus for air circuit breaker
KR20110015920A (en) * 2009-08-10 2011-02-17 대영정공(주) Withdrawable device for circuit breaker
KR20120024066A (en) * 2010-09-03 2012-03-14 엘에스산전 주식회사 Draw-out safety apparatus for circuit breaker

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Publication number Publication date
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