KR20160117009A - Switching mechanism for molded case circuit breaker and assembling methood of the same - Google Patents

Switching mechanism for molded case circuit breaker and assembling methood of the same Download PDF

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Publication number
KR20160117009A
KR20160117009A KR1020150045550A KR20150045550A KR20160117009A KR 20160117009 A KR20160117009 A KR 20160117009A KR 1020150045550 A KR1020150045550 A KR 1020150045550A KR 20150045550 A KR20150045550 A KR 20150045550A KR 20160117009 A KR20160117009 A KR 20160117009A
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South Korea
Prior art keywords
pin
lever
handle
assembly
opening
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KR1020150045550A
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Korean (ko)
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KR101981596B1 (en
Inventor
안병수
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현대중공업 주식회사
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Priority to KR1020150045550A priority Critical patent/KR101981596B1/en
Publication of KR20160117009A publication Critical patent/KR20160117009A/en
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Publication of KR101981596B1 publication Critical patent/KR101981596B1/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
    • H01H71/52—Manual reset mechanisms which may be also used for manual release actuated by lever
    • H01H71/521—Details concerning the lever handle
    • 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
    • H01H71/52—Manual reset mechanisms which may be also used for manual release actuated by lever
    • H01H71/526—Manual reset mechanisms which may be also used for manual release actuated by lever the lever forming a toggle linkage with a second lever, the free end of which is directly and releasably engageable with a contact structure
    • 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
    • H01H71/52—Manual reset mechanisms which may be also used for manual release actuated by lever
    • H01H71/528—Manual reset mechanisms which may be also used for manual release actuated by lever comprising a toggle or collapsible link between handle and contact arm, e.g. sear pin mechanism
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
    • H01H73/36—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism having electromagnetic release and no other automatic release
    • H01H73/38—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism having electromagnetic release and no other automatic release reset by lever
    • 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
    • H01H71/02—Housings; Casings; Bases; Mountings
    • H01H2071/0292—Housing or frames containing grooves or slots for guiding movable parts

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Breakers (AREA)

Abstract

According to the present invention, an assembly groove part of a handle assembly into which each of both lever pins of a frame assembly at a lower end is inserted, comprises a pin groove in which the lever pin is located, a protrusion which is extended from a back side of both sides of the opening of the pin groove downwards, and prevents the lever pin from being separated from the pin groove, and a guide which forms a guide surface which is extended from a front side of both sides of the opening of the pin groove forwards. Thereby, more improved assembly can be secured.

Description

TECHNICAL FIELD [0001] The present invention relates to an opening / closing mechanism for a circuit breaker for a wiring breaker and a method of assembling the same. BACKGROUND OF THE INVENTION [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an opening / closing mechanism constituting a molded case circuit breaker (MCCB) for protecting circuits and load devices by shutting off a circuit when a fault current is generated, and a method of assembling the same.

Generally, a circuit breaker for wiring includes a main circuit unit having a stationary contactor and a movable contactor, a switching mechanism for opening and closing the main circuit unit, And a trip mechanism for shutting off the main circuit unit by operating the open / close mechanism at the trip position when the trouble occurs. The movable contactor is rotated by the opening / closing mechanism so as to be brought into contact with or separated from the stationary contactor. When the opening / closing mechanism is operated by the trip mechanism to the trip position, the movable contact is separated from the fixed contact, and thus the main circuit unit is cut off.

The opening and closing mechanism includes a handle for manually opening and closing the main circuit unit and includes an on position for opening the main circuit unit by the handle, an off position for blocking the main circuit unit, Off position to a trip position between the off-position and the off-position.

After the failure of the main circuit unit due to the fault current is solved, the process of operating the handle to the reset position, that is, the off position, must be preceded in order to operate the handle to the on position in order to normally energize the current. The reset position means a state in which the opening / closing mechanism operated at the trip position by the trip mechanism is ready to operate again at the trip position, and a trip latch for tripping the opening / closing mechanism is constrained mechanically Which means that the trip spring is kept in a state of accumulating the elastic force so as to provide the trip power.

The opening and closing mechanism of the circuit breaker according to the prior art is shown in Figs. In Figs. 1 and 2, reference numeral 2 denotes a fixed contact, and reference numeral 4 denotes a movable contact.

As shown in FIGS. 1 and 2, the opening / closing mechanism of the circuit breaker according to the prior art includes a pair of side frames 11, which are rotatably supported on the left and right sides of the movable contactor 4, respectively, A pair of levers 12 each having a lower portion rotatably coupled to the upper portion of the side frame 11 and a lever 12 coupled to the upper portion of the lever 12, And an operating handle which is movable to a front ON position for opening the main circuit unit and a rear position (reset position) for interrupting the main circuit unit, and a lever (12) A lower link 15 connected to the movable contact 4 and the toggle pin 14 and a toggle pin 14 connected to the toggle pin 14, An upper link 16 connected to a lower portion of the upper link 16, The trip latch 17, the manipulating handles 12 and 13, and the toggle pin 14, both of which are connected to the side frame 11 so as to be rotatable in the up-and-down direction and movable to the reset position and the trip position, At least one trip spring 18 for accumulating elastic energy when the operation handle is operated in the off position and a trip spring 18 provided at the rear side of the trip latch 17 and connected to the trip latch 17 A latch holder 19 which is rotatable to a restraining position and a restraining releasing position and operated by a trip mechanism to operate in a restraining releasing position and a lever 12 which is provided on the lever 12 and in which the operating handles 12, An operation member 12a that operates the latch holder 19 to the restraining release position when operated and a restraint by the latch holder 19 when the operation handle 12 and 13 are provided in the lever 12 and are operated in the off position By operating the released trip latch 17, It comprises a reset pin (pin reset, 20) of operating values.

Referring to Figs. 1 and 3, the lever 12 is disposed outside the side frame 11. A lever pin 21 protruding outward is provided at an upper portion of the side frame 11 and at the lower end of the lever 12 the operation handles 12 and 13 are rotated around the lever pin 21 An assembling groove portion 12b into which the lever pins 21 are inserted is provided. The connecting groove portion 12b extends downward from both the semicircular pin groove a and the opening of the pin groove a having a shape corresponding to the outer periphery of the lever pin 21, (B) for preventing separation of the lever (21) and the lever (12).

The movable contactor 4 is rotated by the upper and lower links 16 and 15 to be brought into contact with or separated from the stationary contactor 2 when the operation handles 12 and 13 are operated in the on position or the off position.

The latch holder 19 is provided with a to-be-operated member 19a which receives operation force from the operating member 12a. The reset pin 20 is disposed between the levers 12 in the left-right direction to press the trip latch 17 whose restraint is released when the operation handles 12, 13 are operated to the off position.

The upper link 16, the trip latch 17, the latch holder 19 and the operated member 19a and the lever pin 21 are connected to each other by a frame assembly ). The operation handle 12 and the operating member 12a, the toggle pin 14, the lower link 15, the trip spring 18 and the reset pin 20 constitute a handle assembly .

Such an opening / closing mechanism is disposed at a position spaced a predetermined distance upward from the entrance (the tip of the protruding step b) of the fitting groove 12b. Therefore, when the frame assembly and the handle assembly are assembled The trip spring 18 must be stretched by a distance between the entrance of the pin groove a and the entrance of the fitting groove 12b in order to allow the lever pin 21 to enter the pin groove a through the entrance of the fitting groove 12b. Since the elastic force of the trip spring 18 is very large, it is difficult and difficult to tension the trip spring 18 simply depending on the workforce of the operator. Conventionally, the frame assembly and the handle assembly are assembled as follows.

The handle assembly and the frame assembly are assembled so that the lever pins 21 of the frame assembly are inserted into the respective mounting depressions 12b of the assembled handle assembly except for the reset pin 20. The rotation angle range of the trip latch 17 toward the trip position direction is increased by removing the reset pin 20 from the handle assembly at the time of assembling, and the pull length of the trip spring 18 necessary for the collimator assembly can be reduced to some extent.

Next, after the trip latch 17 is rotated toward the reset position direction to secure an assembly space with respect to the reset pin 20, the reset pin 20 is assembled (see FIG. 4). At this time, the reset pin 20 is assembled in a state in which the trip latch 17 overcomes the elastic force by a separate jig, tool, or the like and is rotated to the reset position.

Such an assembling structure and method can not restrict the rotation of the trip latch 17 toward the trip position until the reset pin 20 is assembled. Therefore, by the load of the trip spring 18, (See 12 and 13) and the trip latch 17, so that the operation handle may be damaged.

Further, since a separate jig or tool is required in the assembling process, the assembling process is cumbersome.

Another method of assembling the opening and closing mechanism is to use the handle assembly and the frame assembly so that the lever pins 21 are inserted into the respective mounting groove portions 12b in a state in which the trip springs 18 are not connected to the operating handles 12, The trip spring 18 is pulled upward by pulling the upper end of the trip spring 18 through the spring opening of the connecting member connecting the upper end of the lever 12 There is a method of connecting the handle 13 to the lever 12 after the trip spring 18 is connected to the connecting member using the lever 22 (see Fig. 5B).

However, since the trip spring 18 must be tensioned, a considerably large force is required for assembling. If the trip spring 18 is missed during the tensioning process of the trip spring 18, a large impact is applied to the periphery of the trip spring 18, thereby disassembling the assembled state or damaging peripheral parts.

Korean Patent Registration No. 10-0885849 (Feb. 27, 2009) Korean Registered Patent No. 10-0978274 (Aug. 26, 2010)

It is an object of the present invention to provide an opening and closing mechanism for a circuit breaker for a wiring breaker which is more advantageous in terms of improvement in assemblability and an assembling method thereof.

The problems to be solved are not limited thereto, and other matters not mentioned can be clearly understood by those skilled in the art from the following description.

According to an embodiment of the present invention, there is provided a frame assembly comprising: a frame assembly having a pair of side frames opposed to each other at left and right intervals, and lever pins provided to the pair of side frames in left and right directions; A handle assembly having a pair of levers for coupling the handle to an upper portion and an assembly groove portion for inserting the lever pins into the lower end of the lever and rotating the handle about the lever pin to an on position in a forward direction and an off position in a rear direction, Wherein each of the mounting recesses has a pin groove having a curvature corresponding to an outer periphery of the lever pin and in which the lever pin is located; A protrusion protruding downward from a rear side of both of the openings of the pin groove to prevent separation of the pin pin and the lever pin located in the pin groove; And a guide which forms a guide surface extending forwardly from the opening of the pin groove on the front side of both openings of the pin groove, whereby when the frame assembly and the handle assembly are assembled, the lever pin enters the pin groove along the guide surface As far as possible, an opening / closing mechanism for a wiring breaker can be provided.

Here, the guide surface may be formed in an ascending slope shape from the front side to the rear side.

The opening of the pin groove and the guide surface may be curved or inclined. In this case, the entry of the lever pin into the pin groove can be made smooth and natural.

Wherein the frame assembly further includes a trip latch movably movable between a reset position and a trip position in an area between the side frames and a latch holder movable to a restraining position and a restraining releasing position with respect to the trip latch, And a trip spring for providing a tripping force for operating the handle to the trip position upon releasing the trip latch.

According to an embodiment of the present invention, there is provided a method of manufacturing a semiconductor device, comprising: preparing a frame assembly and a handle assembly as described above; Assembling the frame assembly and the handle assembly such that a lever pin of the prepared frame assembly and a guide surface of an assembly groove of the prepared handle assembly are in contact with each other; And moving the frame assembly and the handle assembly relative to each other such that the lever pin in contact with the guide surface enters the pin groove of the mounting groove along the guide surface.

Here, the handle assembly may be in an on-position in which the frame assembly and the handle assembly are engaged with each other, and the lever pin may be inserted into the pin groove by operating the handle to an off position.

Means for solving the problems will be more specifically and clarified through the embodiments, drawings, and the like described below. In addition, various solution means other than the above-mentioned solution means may be further proposed.

According to the embodiment of the present invention, since the pull distance of the trip spring required when assembling the frame assembly and the handle assembly is relatively short and relatively small force is required to pull the trip spring, It can be assembled easily, quickly, and well without using it.

1 is a perspective view showing an opening and closing mechanism of a circuit breaker according to the prior art.
2 is a side view showing the interior of the opening and closing mechanism shown in Fig.
3 is a side view showing part A of Fig.
Fig. 4 is a perspective view showing an example of the opening and closing mechanism assembling method shown in Fig. 1. Fig.
5A and 5B are perspective views showing another example of the opening and closing mechanism assembling method shown in FIG.
6 is a perspective view showing an opening and closing mechanism of a circuit breaker according to an embodiment of the present invention.
7 is a side view showing the interior of the opening and closing mechanism shown in Fig.
8 is a perspective view showing a frame assembly of the opening / closing mechanism shown in Figs. 6 and 7. Fig.
Fig. 9 is a perspective view showing a handle assembly of the opening and closing mechanism shown in Figs. 6 and 7. Fig.
10A and 10B are side views showing a method of assembling an opening and closing mechanism of a circuit breaker according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. For a better understanding of the invention, it is to be understood that the size of elements and the thickness of lines may be exaggerated for clarity of understanding. Further, the terms used to describe the embodiments of the present invention are mainly defined in consideration of the functions of the present invention, and thus may be changed depending on the intentions and customs of the user and the operator. Therefore, the terminology should be interpreted based on the contents of the present specification throughout.

An opening / closing mechanism of a circuit breaker according to an embodiment of the present invention is shown in Figs. 6 to 10. Fig. 6 and 7, reference numeral 2 denotes a fixed contact, and reference numeral 4 denotes a movable contact. The fixed contact 2 and the movable contact 4 constitute a main circuit unit. The movable contactor 4 is rotatable to a position where it is in contact with the stationary contactor 2 (separated from the stationary contactor 2) and is brought into contact with or separated from the stationary contactor 2 according to the direction of rotation by the opening and closing mechanism.

The opening and closing mechanism of the circuit breaker according to the embodiment of the present invention includes a frame assembly 6F (see FIG. 8) and a handle assembly 6H (see FIG. 9). The frame assembly 6F includes a pair of side frames 110, an upper link 160, a trip latch 170, a latch holder 190 and a lever pin 210. The handle assembly 6H includes a manipulation handle 120, 130, a toggle pin 140, a lower link 150, a trip spring 180, and a reset pin 200. Specifically, it is as follows.

The pair of side frames 110 are disposed so as to face each other with a predetermined distance left and right. A movable contact 4 is provided at a lower portion between the side frames 110 so as to be rotatable about an axis in the left-right direction. Both the left and right movable contacts 4 can be rotatably supported by the side frames 110. [

The operation handle includes a pair of levers 120 each having a lower portion rotatably coupled to the upper portion of the side frame 110 and a handle 120 coupled to the upper portion of the lever 120 and rotated together with the lever 120 130), and can be moved to an on-position for opening the main circuit unit and an off (reset) position for blocking the main circuit unit on the rear side.

The toggle pin 140 is disposed between the levers 120 in a lateral direction so as to be parallel to the center of rotation of the lever 120. The toggle pin 140 is positioned forward relative to the center of rotation 210 of the lever 120.

The upper link is connected to the toggle pin 140 and the lower link is connected to the movable contact 4. The upper link 160 is connected to the lower end of the toggle pin 140.

The trip latch (170) is provided between the side frames (110) so as to be movable between a reset position and a trip position. To this end, the trip latch (170) is rotatably connected to the side frame (110) in the vertical direction by a shaft member disposed in the left and right direction. The upper end of the upper link 160 is connected to the center of the trip latch 170.

The trip springs 180 are provided in a single or plural numbers. The trip spring 180 is connected to both the manipulation handle and the toggle pin 140 so as to accumulate elastic energy when the manipulation handles 120 and 130 are operated to the off position. The upper end of the trip spring 180 may be connected to a connecting member connecting the upper portion of the lever 120.

The latch holder 190 is provided on the side frame 110 so as to be located on the rear side of the trip latch 170. The latch holder 190 is configured to be rotatable to a restraining position and a restraining position for the trip latch 170. [ The latch holder 190 is rotated by the trip mechanism to the restraining position.

The lever 120 is provided with an operation member 122 for operating the latch holder 190 to the restraining release position when the operation handles 120 and 130 are operated to the off position. The latch holder 190 is provided with a to-be-operated member 192 that receives operating force from the operating member 122. [ The operating member 122 is integral with the lever 120 and the operated member 192 can be integrated with the latch holder 190. [

The reset pin 200 operates (pressurizes) the trip latch 170 whose restraint by the latch holder 190 is released and operates to the reset position when the operation handle 120, 130 is operated to the off position. The reset pin 200 is connected to the lever 120 between the levers 120, and is disposed laterally.

The lever 120 is disposed outside the side frame 110. A lever pin 210 protruding from the outside in the lateral direction is provided on the upper portion of the side frame 110 and an assembly groove portion 124 into which the lever pin 210 is inserted is provided at the lower end of the lever 120, The operation handles 120 and 130 rotate about the lever pin 210 in the on position and the off position.

Each of the fitting groove portions 124 has a semicircular pin groove 124a having a curvature corresponding to the outer periphery of the lever pin 210 and in which the lever pin 210 is positioned, A projecting protrusion 124b extending from the pin groove 124a to the pin groove 124a to prevent separation of the pin pin 124a and the lever pin 210 located in the pin groove 124a and the frame assembly 6F And a guide 124c for guiding the entry of the lever pin 210 into the pin groove 124a when the handle assembly 6H is assembled.

The guide 124c forms a guide surface 124c extending forward from the opening of the pin groove 124a on the front side of both openings of the pin groove 124a. Accordingly, the protrusion 124b is formed to have a predetermined protrusion length, while the guide 124c has a protrusion length that is shorter than the protrusion 124b or does not have the protrusion length.

Preferably, the guide surface 124c is formed as an inclined surface inclined upward from the front side to the rear side, and the opening of the pin groove 124a and the guide surface 124c are curved or inclined.

The opening and closing mechanism of the circuit breaker according to the embodiment of the present invention configured as described above can be assembled as follows.

The frame assembly 6F assembled with the side frame 110, the upper link 160, the trip latch 170, the latch holder 190 and the lever pin 210 is prepared, The handle assembly 6H assembled with the manipulation handles 120 and 130, the toggle pin 140, the lower link 150, and the trip spring 180 is prepared.

After connecting the toggle pin 140 and the upper link 160 and connecting the reset pin 200 to the lever 120, the trip latch 170 is rotated to the reset position, And the guide surface 124c of the mounting groove 124 is in contact with the lever pin 210. The frame assembly 6F and the handle assembly 6H are assembled together (see FIG. 10A). At this time, the distance from the upper end of the trip spring 180 to the guide surface 124c is shortened by the ascending inclined guide surface 124c from the front to the rear side, and the point where the load of the handle assembly 6H with respect to the lever pin 210 The worker can pull the trip spring 180 with a relatively small force without using a separate jig or the like due to the fact that the direction is similar to the load direction of the trip spring 180. [ In order to further reduce the force required to tension the trip spring 180, the guide surface 124c has a handle (not shown) for the lever pin 210 when the handle 130 is in the on position, within an angular range of uphill inclination from the front to the rear, It is preferable to form such that the load direction of the assembly 6H and the load direction of the trip spring 180 are maximally similar.

Next, the lever pin 210 which is in contact with the guide surface 124c is moved along the guide surface 124c and relatively moved between the frame assembly 6F and the handle assembly 6H so as to enter the pin groove 124a (see FIG. 10B) . Then, assembly of the frame assembly 6F and the handle assembly 6H is completed. In this process, the lever pin 210 smoothly and smoothly enters the pin groove 124a by the curved surface or the inclined surface provided between the opening of the pin groove 124a and the guide surface 124c.

The process of advancing the lever pin 210 into the pin groove 124a may be performed by operating the handle 130 in the on position to the off position.

While the present invention has been described in connection with what is presently considered to be the most practical and preferred embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the invention. Further, the technical ideas described in the embodiments of the present invention may be performed independently of each other, or two or more may be implemented in combination with each other.

110: Side frame
120: Lever
124: Assembly groove
124a: Pin groove
124b: protruding jaw
124c:
130: Handle
140: toggle pin
150: Lower link
160: upper link
170: Trip latch
180: Trip spring
190: latch holder
200: Reset pin
210: Lever pin

Claims (6)

A frame assembly having a pair of side frames opposed to each other with an interval therebetween, and a lever pin provided to the pair of side frames in left and right directions;
A handle assembly having a pair of levers for coupling the handle to an upper portion and an assembly groove portion for inserting the lever pins into the lower end of the lever and rotating the handle about the lever pin to an on position in a forward direction and an off position in a rear direction, Lt; / RTI >
Wherein each of the assembly-
A pin groove having a curvature corresponding to an outer periphery of the lever pin and in which the lever pin is located;
A protrusion protruding downward from a rear side of both of the openings of the pin groove to prevent separation of the pin pin and the lever pin located in the pin groove;
And a guide which forms a guide surface extending forward from the opening of the pin groove on the front side of both openings of the pin groove,
Wherein when the frame assembly and the handle assembly are assembled, the lever pin is capable of entering the pin groove along the guide surface,
Opening / closing mechanism for circuit breaker. The method according to claim 1,
Wherein the guide surface is formed in an upwardly inclined shape from the front to the rear,
Opening / closing mechanism for circuit breaker. The method according to claim 1 or 2,
Wherein the opening of the pin groove and the guide surface are curved or inclined,
Opening / closing mechanism for circuit breaker. The method according to claim 1,
The frame assembly further includes a trip latch movable in a reset position and a trip position in an area between the side frames and a latch holder movable to a restraining position and a restraining releasing position with respect to the trip latch,
Wherein the handle assembly further comprises a trip spring that provides tripping power to operate the handle to the trip position upon release of the constraint of the trip latch,
Opening / closing mechanism for circuit breaker. Preparing a frame assembly and a handle assembly according to claim 1 or 4;
Assembling the frame assembly and the handle assembly such that a lever pin of the prepared frame assembly and a guide surface of an assembly groove of the prepared handle assembly are in contact with each other;
And moving the frame assembly and the handle assembly relative to each other such that a lever pin in contact with the guide surface enters the pin groove of the mounting groove along the guide surface.
Method of assembling opening / closing mechanism for circuit breaker. The method of claim 5,
Wherein the handle assembly is engaged with the frame assembly in a state in which the handle is in an on position,
And the lever pin is inserted into the pin groove by operating the handle to an off position.
Method of assembling opening / closing mechanism for circuit breaker.
KR1020150045550A 2015-03-31 2015-03-31 Switching mechanism for molded case circuit breaker and assembling methood of the same KR101981596B1 (en)

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Application Number Priority Date Filing Date Title
KR1020150045550A KR101981596B1 (en) 2015-03-31 2015-03-31 Switching mechanism for molded case circuit breaker and assembling methood of the same

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KR101981596B1 KR101981596B1 (en) 2019-05-23

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114290048A (en) * 2021-11-10 2022-04-08 珠海许继电气有限公司 Full-automatic moving blade component assembling and conveying device and method

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100885849B1 (en) 2007-08-10 2009-02-27 엘에스산전 주식회사 Mold cased circuit breaker with contact on mechanism
KR20100071844A (en) * 2008-12-19 2010-06-29 엘에스산전 주식회사 On-off device of circuit breaker
KR100978274B1 (en) 2008-10-17 2010-08-26 엘에스산전 주식회사 Mold cased circuit breaker
KR20130068845A (en) * 2011-12-16 2013-06-26 현대중공업 주식회사 Tripping device and a circuit braker having the same

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100885849B1 (en) 2007-08-10 2009-02-27 엘에스산전 주식회사 Mold cased circuit breaker with contact on mechanism
KR100978274B1 (en) 2008-10-17 2010-08-26 엘에스산전 주식회사 Mold cased circuit breaker
KR20100071844A (en) * 2008-12-19 2010-06-29 엘에스산전 주식회사 On-off device of circuit breaker
KR20130068845A (en) * 2011-12-16 2013-06-26 현대중공업 주식회사 Tripping device and a circuit braker having the same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114290048A (en) * 2021-11-10 2022-04-08 珠海许继电气有限公司 Full-automatic moving blade component assembling and conveying device and method

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