KR20170041939A - Trip apparatus of circuit breaker - Google Patents

Trip apparatus of circuit breaker Download PDF

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Publication number
KR20170041939A
KR20170041939A KR1020150140906A KR20150140906A KR20170041939A KR 20170041939 A KR20170041939 A KR 20170041939A KR 1020150140906 A KR1020150140906 A KR 1020150140906A KR 20150140906 A KR20150140906 A KR 20150140906A KR 20170041939 A KR20170041939 A KR 20170041939A
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KR
South Korea
Prior art keywords
cover
trip
circuit breaker
fastening
shooter
Prior art date
Application number
KR1020150140906A
Other languages
Korean (ko)
Other versions
KR102014316B1 (en
Inventor
정준영
Original Assignee
현대중공업 주식회사
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Filing date
Publication date
Application filed by 현대중공업 주식회사 filed Critical 현대중공업 주식회사
Priority to KR1020150140906A priority Critical patent/KR102014316B1/en
Publication of KR20170041939A publication Critical patent/KR20170041939A/en
Application granted granted Critical
Publication of KR102014316B1 publication Critical patent/KR102014316B1/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
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/24—Electromagnetic mechanisms
    • H01H71/2454—Electromagnetic mechanisms characterised by the magnetic circuit or active magnetic elements
    • 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
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/24—Electromagnetic mechanisms
    • H01H71/2463—Electromagnetic mechanisms with plunger type armatures
    • 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
    • H01H71/74—Means for adjusting the conditions under which the device will function to provide protection

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

Abstract

According to an aspect of the present invention, there is provided a trip device for a circuit breaker having improved fastening structure provided in a trip device, wherein a trip device of the circuit breaker according to an aspect of the present invention includes: A trip device of a circuit breaker provided with a shooter, wherein the trip cover includes a first cover and a second cover, in which a switch for interrupting a circuit and internal components are accommodated, at least one side of which is coupled by a fastening member, A fastening groove provided on at least one of the first cover and the second cover, the fastening groove being formed on the same axis as a shaft to which the shooter is rotatably coupled, the fastening member coupling the trip cover; And protrusions protruding from the periphery of the fastening groove for engagement of the shooter.

Description

[0001] TRIP APPARATUS OF CIRCUIT BREAKER [0002]

The present invention relates to a trip device of a circuit breaker in which a short-circuit breaking operation is performed in a circuit breaker for overload or short-circuit protection.

Generally, circuit breakers are used to prevent safety accidents by detecting overload current, short-circuit current,

Referring to FIGS. 1 and 2, the circuit breaker includes a circuit breaker body provided to detect and interrupt the supply of current when a circuit is short-circuited or overheated, and a circuit breaker installed in the circuit breaker body to start and stop the current when instantaneous over- A trip device 10 is provided.

The trip device 10 is provided so as to be exposed to the outside through the circuit breaker body, and a switch 12 for switching on and off of the current supply and a magnetic switch 12 for operating the internal components can be provided.

Further, the trip device 10 may be provided with a trip cover 20 for protecting the switch 12 and internal components. The trip cover 20 may include, for example, a first cover 22 and a second cover 24 and is coupled by a fastening member 26 at a plurality of locations.

Such a trip device 10 has a problem in that the engagement of the fastening member 26 to which the fastening member 26 is coupled at a position adjacent to the shooter 30 An insertion groove 27 is provided.

The fastening member 26 may be, for example, a bolt 26. The fastening member 26 is inserted into the insertion groove 27 and then is fastened to the nut member 26 ' ) Can be integrally combined.

Further, on one side of the trip cover 20, a mechanical operation is performed to the pressure generated in the short-circuit, and the shooter 30 which performs the current interrupt operation is rotatably provided.

On the other hand, the circuit breaker can be connected to the three-phase power source, so that the shooter 30 provided to the trip cover 20 is also provided to be connected to the three-phase power source, respectively. Here, the shooter 30 is in close contact with the adjacent other shooters 30 and maintains the engaged state.

The shoe 30 is inserted into the seating groove 28 formed on the side surface of the trip cover 20 and the protrusion rod 32 is formed on the side surface of the shoe 30 to fit into the seating groove 28 .

On the other hand, the trip device 10 of the circuit breaker is progressively reduced in size with the development of technology, and the overall size of the trip device 10 is also decreasing. Thus, the fastening member 26 Is a factor that causes interference in the operation of the shooter 30, and there is a space restriction for installing the fastening member 26 due to miniaturization.

Korean Patent Application No. 10-2003-0006697 (2003.02.04)

An embodiment of the present invention aims at providing a trip device for a circuit breaker which improves the fastening structure provided in a trip device.

According to an aspect of the present invention, there is provided a trip device for a circuit breaker including a shoe for operating a circuit breaking operation on one side of a trip cover, wherein the trip cover includes a switch for interrupting a circuit, And a second cover which is provided on at least one of the first cover and the second cover and which is coaxial with a shaft to which the shooter is rotatably engaged, A fastening groove formed on the ship and coupled with a fastening member for fastening the trip cover; And protrusions protruding from the periphery of the fastening groove for engagement of the shooter.

The nut cover may include a nut press-fitting portion provided with a nut member for fastening the fastening member provided on the other of the first cover and the second cover and inserted into the fastening groove.

The protrusion may protrude from the periphery of the nut press-fitting portion to engage with the shooter.

In addition, the protector may be formed with a protrusion coupling groove into which the protrusion is inserted in an axial direction to be engaged with the trip cover.

According to an embodiment of the present invention, the fastening member provided for fastening the trip device is provided so as to be coupled to the same axis as the shooter, so that the installation space of the fastening member can be reduced, It is possible to reduce interference factors that may occur during operation, thereby ensuring stability in operation.

1 is a perspective view explaining a part of a trip device of a circuit breaker according to the prior art.
2 is an enlarged cross-sectional view of a part of a trip device of a circuit breaker according to the prior art;
3 is an overall perspective view of a circuit breaker in accordance with an embodiment of the present invention.
4 is a perspective view illustrating a trip device of a circuit breaker according to an embodiment of the present invention;
FIG. 5 is a perspective view of a trip device of a circuit breaker according to an embodiment of the present invention. FIG.
FIG. 6 is an enlarged cross-sectional view of a part of a trip device of a circuit breaker according to an embodiment of the present invention; FIG.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings. The embodiments of the present invention can be modified into various other forms, and the scope of the present invention is not limited to the embodiments described below. The shape and the size of the elements in the drawings may be exaggerated for clarity and the same elements are denoted by the same reference numerals in the drawings.

3 is a general perspective view of a circuit breaker in accordance with an embodiment of the present invention. FIG. 4 is a perspective view illustrating a trip device of a circuit breaker according to an embodiment of the present invention, FIG. 5 is a perspective view of a trip device of a circuit breaker according to an embodiment of the present invention, 6 is an enlarged cross-sectional view of a part of a trip device of a circuit breaker according to an embodiment of the present invention.

3 to 6, the trip device of the circuit breaker 100 is a device for controlling the opening and closing of the current supply in the circuit breaker 100, and automatically stops supplying the current when an abnormality such as an overload or a short circuit of the current supply occurs Is the main device of the circuit breaker (100).

The circuit breaker 100 may be connected to a three-phase power source, and a solenoid or the like for circuit connection and operation control may be provided therein.

The circuit breaker 100 includes a circuit breaker body 105 provided to detect and interrupt the supply of current when a circuit is short-circuited or overheated, and a circuit breaker 100 installed in the circuit breaker body 105 to shut off the current when an instantaneous over- A trip device 110 may be provided.

The trip device 110 is provided to be exposed to the outside through the breaker body 105, and a switch 112 for switching on and off of the current supply and internal parts interlocking with the switch 112 can be provided.

In addition, the trip device 110 is provided with a trip cover 120 for protecting the switch 112 and the internal components, a mechanical action is performed on one side of the trip cover 120 against the pressure generated during a short circuit, A shooter 130 that performs a cut-off operation is rotatably provided.

The trip cover 120 may include a first cover 122 and a second cover 124, at least one side of which is coupled by a fastening member 26.

For example, the trip cover 120 can be fastened and coupled with the fastening member 126 at the corner portions of the first cover 122 and the second cover 124.

The fastening member 126 is fastened to at least one of the first cover 122 and the second cover 124 on the same axis as a shaft to which the shooter 130 is rotatably coupled, Can be combined.

For this purpose, a coupling groove 28 for coupling the coupling member 126 may be formed on the same axis as the shaft to which the shooter 130 is coupled.

Preferably, in this embodiment, the circuit breaker 100 may be provided in correspondence with a three-phase power source, such as a shoe 130 provided in a trip cover 120, for interrupting current to a three-phase power source. In addition, the shoWer 130 coupled to the trip cover 120 may be provided in three units corresponding to the three-phase power source, and at least two shoWers 130 may be coupled to both sides of the trip cover 120. [

For this purpose, the fastening groove 128 includes a fastening member 126, for example, a through hole through which the body of the bolt 126 is inserted. The periphery of the fastening hole 126 is formed as a step .

The fastening member 126 inserted into the fastening groove 128 can be fastened and fixed to the opposite side of the fastening groove 128 of the first cover 122 and the second cover 124.

To this end, a nut member 126 'for engaging the fastening member 126 inserted into the fastening groove 128 is formed on the opposite side of the fastening groove 128 of the first cover 122 and the second cover 124, A press-fit nut press-in portion 128 'may be provided.

In this embodiment, the first cover 122 and the second cover 124 have a plurality of fastening members 126 coupled to the periphery and a fastening member 126 fastened to the nut press-fitting portion 128 ' (Not shown).

A protrusion 129 for engaging with the shooter 130 may protrude from the periphery of the coupling groove 128. The protrusion 129 may be formed in a circular shape in the periphery of the coupling groove 128 and protrude by a predetermined length.

Meanwhile, the protrusion 130 may be formed with a protrusion coupling groove 132 into which the protrusion 129 is inserted in the axial direction to be coupled with the trip cover 120.

The shooter 130 can be engaged with the protrusion 129 and rotatably engaged after the fastening member 126 is inserted into the fastening groove 128.

In this embodiment, the shooter 130 can be coupled at the same position as the engagement shaft of the fastening member 126, so that the trip cover 120 can have a space for fastening the fastening member 126, The space for coupling can be integrated to improve the space utilization.

In addition, in this embodiment, the shooter 130 can be coupled to both the first cover 122 and the second cover 124. To this end, the shooter 130 may be coupled to the periphery of the nut press- The protrusion 129 'may be formed in a circular shape and protrude by a predetermined length.

As described above, in this embodiment, both the first cover 122 and the second cover 124 are provided with the fastening groove 128 and the nut press-fitting portion 128 ', into which the fastening member 126 is inserted and fastened, The protrusions 129 and 129 'formed in the periphery of the protrusion 130 and the protrusions 130 of the protector 130 are inserted into the protrusions 129 and 129', respectively.

As described above, the trip device 110 of the circuit breaker 100 of this embodiment is configured such that the shooter 130 is stably rotatably coupled, and at the same time, the first cover 122 and the second cover The overall size of the trip device 110 can be reduced.

Since the rotation of the shooter 130 is not disturbed by the fastening member 126 for engaging the trip cover 120, the rotation operation of the shooter 130 can be further smoothly performed.

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims and their equivalents. It will be clear to those who have knowledge.

100: circuit breaker 110: trip device
112: Switch 120: Trip cover
122: first cover 124: second cover
126: fastening member 128: fastening groove
128 ': Nut press-fitting portion 129, 129': Projection portion
130: Shooter 132: Projection groove

Claims (4)

1. A trip device for a circuit breaker having a shoe for operating a circuit breaking operation on one side of a trip cover,
Wherein the trip cover includes a first cover and a second cover, in which a switch for interrupting a circuit and internal components are accommodated, at least one side of which is coupled by a fastening member,
A fastening groove provided on at least one of the first cover and the second cover, the fastening groove being formed on the same axis as a shaft to which the shooter is rotatably coupled, the fastening member coupling the trip cover; And
A protrusion protruding to the periphery of the fastening groove to engage with the shooter;
Wherein the circuit breaker trip device comprises: The method according to claim 1,
And a nut press-fit portion provided on the other of the first cover and the second cover and press-fitted into the nut member for fastening the fastening member inserted into the fastening groove. The method of claim 2,
And a protrusion protruding to the periphery of the nut press-fitting portion for engagement of the shooter. The method according to any one of claims 1 to 3,
Wherein the protrusion of the protector is inserted into the protrusion of the protector in an axial direction of the protector.

KR1020150140906A 2015-10-07 2015-10-07 Trip apparatus of circuit breaker KR102014316B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020150140906A KR102014316B1 (en) 2015-10-07 2015-10-07 Trip apparatus of circuit breaker

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150140906A KR102014316B1 (en) 2015-10-07 2015-10-07 Trip apparatus of circuit breaker

Publications (2)

Publication Number Publication Date
KR20170041939A true KR20170041939A (en) 2017-04-18
KR102014316B1 KR102014316B1 (en) 2019-08-27

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Application Number Title Priority Date Filing Date
KR1020150140906A KR102014316B1 (en) 2015-10-07 2015-10-07 Trip apparatus of circuit breaker

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KR (1) KR102014316B1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102526351B1 (en) 2022-12-29 2023-04-27 박영규 Press part assembly jig and assembly method using the same

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0482123A (en) * 1990-07-25 1992-03-16 Hitachi Ltd Breaker for wiring
KR20030006697A (en) 2001-07-14 2003-01-23 기아자동차주식회사 Side Trim Structure of Luggage Cover in Vehicles
KR20060064334A (en) * 2004-12-08 2006-06-13 엘에스산전 주식회사 Pressure trip apparatus of the circuit breaker
JP2010027556A (en) * 2008-07-24 2010-02-04 Kawamura Electric Inc Circuit breaker

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0482123A (en) * 1990-07-25 1992-03-16 Hitachi Ltd Breaker for wiring
KR20030006697A (en) 2001-07-14 2003-01-23 기아자동차주식회사 Side Trim Structure of Luggage Cover in Vehicles
KR20060064334A (en) * 2004-12-08 2006-06-13 엘에스산전 주식회사 Pressure trip apparatus of the circuit breaker
JP2010027556A (en) * 2008-07-24 2010-02-04 Kawamura Electric Inc Circuit breaker

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