KR20160122360A - Circuit breaker having rotary handle cover - Google Patents

Circuit breaker having rotary handle cover Download PDF

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Publication number
KR20160122360A
KR20160122360A KR1020150052074A KR20150052074A KR20160122360A KR 20160122360 A KR20160122360 A KR 20160122360A KR 1020150052074 A KR1020150052074 A KR 1020150052074A KR 20150052074 A KR20150052074 A KR 20150052074A KR 20160122360 A KR20160122360 A KR 20160122360A
Authority
KR
South Korea
Prior art keywords
rotary handle
cam lever
plate
circuit breaker
ascending
Prior art date
Application number
KR1020150052074A
Other languages
Korean (ko)
Inventor
오기환
Original Assignee
엘에스산전 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 엘에스산전 주식회사 filed Critical 엘에스산전 주식회사
Priority to KR1020150052074A priority Critical patent/KR20160122360A/en
Publication of KR20160122360A publication Critical patent/KR20160122360A/en

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/50—Manual reset mechanisms which may be also used for manual release
    • H01H71/56—Manual reset mechanisms which may be also used for manual release actuated by rotatable knob or wheel
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/04—Means for indicating condition of the switching device
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/04—Means for indicating condition of the switching device
    • H01H2071/042—Means for indicating condition of the switching device with different indications for different conditions, e.g. contact position, overload, short circuit or earth leakage

Abstract

And a rotary handle cover for improving the convenience of operation of the ON / OFF operation of the wiring breaker.
The present invention provides a circuit breaker including a circuit breaker main body having a main handle operated in a vertical direction and a rotary handle cover provided on a front surface of the circuit breaker main body, the circuit breaker comprising: a cover body forming an outer appearance; A rotary handle rotatably coupled to the cover body; A lifting plate that moves up and down according to an operation of the rotary handle to adjust a position of the main handle in a state where the main handle is restrained; And a key lock having a cam lever which rotates together with a key inserted into one side of the cover body, wherein the movement of the elevating and lowering plate is restricted at the locking position of the key lock do.

Description

Description CIRCUIT BREAKER HAVING ROTARY HANDLE COVER WITH ROTARY HANDLE COVER

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wiring breaker, and more particularly, to a wiring breaker including a rotary handle cover for improving the convenience of operation of ON / OFF operation of the wiring breaker.

MCCB is an electric device that protects property and human life by automatically shutting off the circuit by using the detection device in the event of an electrical overload or short circuit.

The circuit breaker consists of a mechanism for driving the circuit breaker, a mechanism for overcurrent detection, a power supply side fixture for connecting the power supply, a trip unit for the load side, a main handle for driving the opening and closing mechanism, and a case and cover for covering these devices.

When the overcurrent or the short-circuit current is generated, the breaker senses the current to drive the breaker, and when the overcurrent or short-circuit current is generated, the breaker drives the breaker , The movable contact point is moved by the opening / closing device portion, and the movable contact is separated from the fixed contact of the fixed contact block to prevent the current from flowing to the load side.

The main handle of such a circuit breaker is formed so as to be operated in the vertical direction, and has an operation position of ON, TRIP, and OFF.

The rotary handle is an accessory device attached to such a circuit breaker, and the upper handle of the main handle is rotated through a rotary operation of the rotary handle to improve the usability.

A related prior art document is Korean Patent Laid-Open Publication No. 10-2007-0114635 (issued on December 4, 2007), 'External operation handle of circuit breaker'.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a circuit breaker which can prevent any operation by providing a locking function to the rotary handle.

Another object of the present invention is to provide a wiring breaker which simplifies the structure of the rotary handle cover and ensures the stability of operation.

In order to achieve the above object, according to the present invention, there is provided a circuit breaker including a circuit breaker main body having a main handle operated in a vertical direction and a rotary handle cover provided on a front surface of the circuit breaker main body, ; A rotary handle rotatably coupled to the cover body; A lifting plate that moves up and down according to an operation of the rotary handle to adjust a position of the main handle in a state where the main handle is restrained; And a key lock having a cam lever which rotates together with a key inserted into one side of the cover body, wherein the movement of the elevating and lowering plate is restricted at the locking position of the key lock do.

The cam lever interferes with the movement locus of the ascending / descending plate at the lock position of the key lock, thereby restricting the movement of the ascending / descending plate.

Preferably, the cam lever includes a support groove for supporting one side edge of the lifting plate.

It is more preferable to provide a stopper for preventing the cam lever from further rotating in the locked position.

The slider may further include a slider that moves by the cam lever so that the slider interferes with the movement locus of the rising and falling plate at the locked position of the key lock to restrict the movement of the rising and falling plate.

Preferably, the rotary handle is provided with an operating gear on its rear surface, and the elevating and lowering plate includes a rack gear meshing with the operating gear.

It is also preferable that the elastic member is provided with an elastic force in a direction in which the ascending / descending plate descends.

INDUSTRIAL APPLICABILITY The wiring breaker according to the present invention has an effect of improving the convenience of use by allowing the position of the main handle operated in the vertical direction to be adjusted by the rotating operation of the rotary rotary handle.

In addition, the circuit breaker according to the present invention provides a locking function to the rotary handle so that the circuit breaker can not be arbitrarily operated other than the operator applied, thereby solving the problems such as failure or damage due to arbitrary operation.

Further, the wiring breaker according to the present invention has an effect of improving the stability of operation by simplifying the structure of the rotary handle cover.

1 is a perspective view showing a wiring breaker having a rotary handle cover according to a first embodiment of the present invention;
FIG. 2 is an exploded perspective view showing a state in which the rotary handle cover according to the first embodiment of the present invention is separated from the circuit breaker main body, FIG.
FIG. 3 is a perspective view illustrating a released state of the rotary handle cover according to the first embodiment of the present invention, FIG.
4 is a rear perspective view showing the internal structure of the rotary handle cover in the released state according to the first embodiment of the present invention,
5 is a perspective view showing a locked state of the rotary handle cover according to the first embodiment of the present invention,
6 is a rear perspective view showing an internal structure of a locked state of the rotary handle cover according to the first embodiment of the present invention,
FIG. 7 is an enlarged perspective view of the cam lever portion in the locked state of the rotary handle cover according to the first embodiment of the present invention; FIG.
8 is a rear perspective view showing the internal structure of the rotary handle cover in the released state according to the second embodiment of the present invention,
9 is an enlarged view showing a cam lever portion in a released state of the rotary handle cover according to the second embodiment of the present invention,
10 is an enlarged view of a cam lever portion in a locked state of a rotary handle cover according to a second embodiment of the present invention.

The terms and words used in the present specification and claims should not be construed as limited to ordinary or preliminary meaning and the inventor shall properly define the concept of the term in order to describe its invention in the best possible way It should be construed in accordance with the meaning and concept consistent with the technical idea of the present invention. It should be noted that the embodiments described in the present specification and the configurations shown in the drawings are only the most preferred embodiments of the present invention and do not represent all the technical ideas of the present invention, It should be understood that various equivalents and modifications are possible.

FIG. 1 is a perspective view of a wiring breaker having a rotary handle cover according to a first embodiment of the present invention, FIG. 2 is a perspective view showing a state in which the rotary handle cover according to the first embodiment of the present invention is separated from the circuit breaker main body It is a perspective view.

As shown in the drawing, the breaker main body 100 of the circuit breaker includes a main handle 110 which is operated in the vertical direction. The main handle 110 is vertically movable and has three operating positions: ON, TRIP, and OFF.

However, when the operation is to be changed from the ON position to the TRIP position, it may be mistakenly operated to the OFF position, and conversely, even if it is desired to change from the OFF position to the TRIP position, And there is a problem that the operation position may be changed due to unexpected or unintentional application of force to the main handle 110 due to carelessness of the operator.

In order to solve such a problem, a rotary handle cover 200 is provided which can vertically manipulate the main handle 110 by rotating the rotary handle.

The rotary handle cover 200 is attached to the front surface of the breaker main body 100 so that the position of the main handle 110 of the breaker main body 100 is changed by the operation of the rotary handle 215, . The rotary handle 215 is capable of accurately changing the operation position by rotating the rotary handle as desired, and has the advantage that the rotary handle 215 is not rotated arbitrarily due to an unexpected physical pressure.

The rotary handle cover 200 according to the present invention is characterized by further including a locking function to prevent any operation of the circuit breaker.

To this end, a key lock 220 is provided on the rotary handle cover 200 of the circuit breaker according to the present invention.

The key lock 220 is movable to a locked position and a released position by means of a specific key 225.

The key lock 220 functions to lock the wiring breaker at the OFF position so that the wiring breaker can not be arbitrarily operated by anyone.

In other words, by configuring the rotary handle 215 to rotate only when the key lock 220 is in the release position by using the key 225, when the key lock 220 is in the lock position, 220 can not be manipulated without changing the position of the rotary handle 215 to the release position.

FIG. 3 is a perspective view illustrating a release state of the rotary handle cover according to the first embodiment of the present invention, FIG. 4 is a rear perspective view illustrating an internal structure of the rotary handle cover according to the first embodiment of the present invention in a released state .

As shown in the figure, the rotary handle cover 200 includes a cover body 210 forming an outer appearance, a rotary handle 215 rotatably coupled to the cover body 210, And a rack gear 234 which is formed on the cover body 210 so as to be movable up and down and which is engaged with the actuating gear 217, A key lock 220 having a lifting plate 230 having a receiving groove 232 for receiving the main handle 110 and a cam lever 227 rotating together with the inserted key 225, And an elastic member 250 that provides a restoring force in a direction in which the ascending / descending plate 230 descends.

At this time, the cam lever 227 is formed such that the end of the cam lever 227 at the lock position of the key lock 220 interferes with the movement locus of the ascending / descending plate 230, And the end portion is formed so as to deviate from the movement locus of the ascending / descending plate 230.

That is, at the locking position of the key lock 220, the cam lever 227 is formed to block movement of the lifting plate 230.

4 shows the released state, and it can be seen that the cam lever 227 is shifted to a position that does not interfere with the movement of the lifting plate 230. As shown in FIG.

On the other hand, the ascending / descending plate 230 can be coupled to the pair of guide rods 236 so as to be ascendable and descendable. The guide rod 236 functions to arrange and guide the lifting and lowering plate 230 only in the vertical direction, and can be replaced with other components such as rails.

The elastic member 250 provides a restoring force in a direction in which the lifting plate 230 descends.

The elastic member 250 plays a role of keeping the lifting plate 230 in a lowered state in a state before assembly (or in a state in which there is no external force). When the rotary handle cover 200 is assembled to the circuit breaker main body 100, the main handle 110 is turned to the OFF position, thereby improving convenience in assembling and preventing the main handle 110 from being undesirably operated .

Hereinafter, the operation of the rotary handle cover will be described.

When the rotary handle 215 of the rotary handle cover 200 is rotated, the operation gear 217 rotates together with the rotary handle 215. Since the actuating gear 217 is formed to mesh with the rack gear 234 formed on the lifting plate 230, the lifting plate 230 is moved up and down by the rotation of the actuating gear 217 .

When the actuating gear 215 rotates in the counterclockwise direction on the basis of the drawing, the lifting plate 230 is lifted and when the lifting plate 215 is rotated in the clockwise direction, .

The main handle 100 of the circuit breaker main body 100 is inserted into the receiving groove 232 of the ascending and descending plate 230 when the rotary handle cover 200 is coupled to the circuit breaker body 100, The main handle 100 moves upward and downward together with the lifting plate 230 to be operated.

FIG. 5 is a perspective view illustrating a locked state of the rotary handle cover according to the first embodiment of the present invention, and FIG. 6 is a rear perspective view illustrating a locked internal structure of the rotary handle cover according to the first embodiment of the present invention.

In the released state, the key 225 is rotated to switch to the locked state. Comparing FIG. 3 and FIG. 5, it can be seen that the key 225 has rotated 90 degrees.

Referring to FIG. 6, it can be seen that the cam lever 227 has rotated with the rotation of the key 225. 4 and 6, it can be seen that the cam lever 227 has rotated about 90 degrees counterclockwise.

The cam lever 227 interferes with the movement locus of the ascending / descending plate 230. 6, it can be seen that the right end of the cam lever 227 is located at a position blocking the left upper end of the lifting plate 230.

FIG. 7 is an enlarged perspective view of a cam lever portion in a locked state of the rotary handle cover according to the first embodiment of the present invention; FIG.

As shown in the figure, the end of the cam lever 227, which interferes with the lifting plate 230, is preferably formed with a support groove 227a so as to cover the upper edge of the lifting plate 230.

This is to allow a part of the left side surface of the lifting plate 230 and a part of the upper end surface of the lifting plate 230 to be stably restrained in the support groove 227a of the cam lever 227. [

It is further preferable to provide the stopper 229 that prevents the cam lever 227 from rotating further in the locked position.

As shown in the drawing, the upper left corner of the lifting plate 230 is constrained to the support groove 227a of the cam lever 227. When the lifting plate 230 is lifted up in this state, Is subjected to a force in the direction of rotating counterclockwise. At this time, if the force for raising the lifting plate 230 is strong, the cam lever 227 is forcibly rotated counterclockwise and the key lock 220 may be damaged or damaged.

The stopper 229 prevents the cam lever 227 from rotating further in the locked position as shown in the figure so as to prevent the elevation of the elevating and lowering plate 230 and the damage of the key lock 220 .

FIG. 8 is a rear perspective view showing the internal structure of the rotary handle cover according to the second embodiment of the present invention in a released state, and FIG. 9 is a perspective view showing the cam lever portion in the released state of the rotary handle cover according to the second embodiment of the present invention. Fig. 10 is an enlarged view showing a locked cam lever portion of a rotary handle cover according to a second embodiment of the present invention. Fig.

The rotation of the cam lever 227 is converted into the linear motion of the slider 240 and the rotation of the slider 240 is performed by the cam lever 227, 240 interferes with the movement trajectory of the lifting plate 230.

As shown in the figure, the slider 240 is formed to be slidable in the horizontal direction below the cam lever 227.

The slider 240 is provided with a pair of protrusions 242 for receiving the movement of the cam lever 227.

The cam lever 227 is placed between the pair of protrusions 242 and the slider 240 is moved to the left or right as the cam lever 227 rotates.

8 and 9, in the released state, the slider 240 is moved to the left. In this state, the slider 240 does not interfere with the movement locus of the lifting plate 230.

The slider 240 moves to the right as shown in FIG. 10 so that the left side surface of the slider 240 interferes with the movement locus of the ascending / descending plate 230, So as not to rise.

The second embodiment is a structure further including the slider 240. The rotation of the cam lever 227 is converted into a linear motion of the slider 240 so that the slider 240 is moved to the movement locus of the lifting plate 230 The cam lever 227 is not directly affected by the movement of the lifting and lowering plate 230 so that an unreasonable operation of the rotary handle can be performed by the key lock 220 And the cam lever 227 are not affected.

It is to be understood that the above-described embodiments are to be considered in all respects as illustrative and not restrictive, and the scope of the present invention will be indicated by the appended claims rather than by the foregoing detailed description. It is intended that all changes and modifications that come within the meaning and range of equivalency of the claims, as well as any equivalents thereof, be within the scope of the present invention.

100:
110: main handle
200: Rotary handle cover
210:
215: Rotary handle
217: Working gear
220: Keylock
225: Key
227: cam lever
227a: Support groove
229: Stopper
230: ascending / descending plate
232: receiving groove
234: Racks
236: Guide rod
240: Slider
242:

Claims (7)

A breaker main body having a main handle operated in the vertical direction,
And a rotary handle cover provided on a front surface of the breaker main body,
Wherein the rotary handle cover comprises: a cover body forming an outer tube;
A rotary handle rotatably coupled to the cover body;
A lifting plate that moves up and down according to an operation of the rotary handle to adjust a position of the main handle in a state where the main handle is restrained; And
And a key lever provided at one side of the cover body and including a cam lever that rotates together with a key inserted,
And the movement of the elevating and lowering plate is restricted at the locking position of the key lock.
The method according to claim 1,
Wherein the cam lever interferes with the movement locus of the ascending / descending plate at the lock position of the key lock to limit the movement of the ascending / descending plate.
3. The method of claim 2,
Wherein the cam lever is provided with a support groove so as to surround one side edge of the lifting plate.
3. The method of claim 2,
Further comprising a stopper for preventing the cam lever from rotating further in a locked position,
The method according to claim 1,
Further comprising a slider that moves by the cam lever,
Wherein the slider interferes with the movement locus of the ascending / descending plate at the lock position of the key lock to limit the movement of the ascending / descending plate.
The method according to claim 1,
Wherein the rotary handle is provided with an operating gear on its rear surface, and the elevating and lowering plate includes a rack gear meshing with the operating gear.
The method according to claim 1,
Further comprising an elastic member that provides an elastic force in a direction in which the ascending / descending plate descends.
KR1020150052074A 2015-04-13 2015-04-13 Circuit breaker having rotary handle cover KR20160122360A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020150052074A KR20160122360A (en) 2015-04-13 2015-04-13 Circuit breaker having rotary handle cover

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150052074A KR20160122360A (en) 2015-04-13 2015-04-13 Circuit breaker having rotary handle cover

Publications (1)

Publication Number Publication Date
KR20160122360A true KR20160122360A (en) 2016-10-24

Family

ID=57256817

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020150052074A KR20160122360A (en) 2015-04-13 2015-04-13 Circuit breaker having rotary handle cover

Country Status (1)

Country Link
KR (1) KR20160122360A (en)

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