KR101113407B1 - Extinguishing device for low voltage breaker - Google Patents

Extinguishing device for low voltage breaker Download PDF

Info

Publication number
KR101113407B1
KR101113407B1 KR1020100116672A KR20100116672A KR101113407B1 KR 101113407 B1 KR101113407 B1 KR 101113407B1 KR 1020100116672 A KR1020100116672 A KR 1020100116672A KR 20100116672 A KR20100116672 A KR 20100116672A KR 101113407 B1 KR101113407 B1 KR 101113407B1
Authority
KR
South Korea
Prior art keywords
arc
movable contact
contact
fixed contact
extinguishing device
Prior art date
Application number
KR1020100116672A
Other languages
Korean (ko)
Inventor
이관희
Original Assignee
이관희
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 이관희 filed Critical 이관희
Priority to KR1020100116672A priority Critical patent/KR101113407B1/en
Application granted granted Critical
Publication of KR101113407B1 publication Critical patent/KR101113407B1/en

Links

Images

Classifications

    • 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
    • H01H71/505—Latching devices between operating and release 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
    • H01H73/02—Details
    • H01H73/04—Contacts
    • H01H73/045—Bridging contacts
    • 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
    • H01H73/02—Details
    • H01H73/18—Means for extinguishing or suppressing arc
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
    • H01H9/34—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
    • H01H9/36—Metal parts

Landscapes

  • Arc-Extinguishing Devices That Are Switches (AREA)

Abstract

PURPOSE: An extinguishing device of a low voltage breaker is provided to improve a short blocking capacity by forcedly blocking an arc path before an arc is cooled. CONSTITUTION: A first stator(200) is formed in a first fixed contact point(210). A second stator(100) is formed in a second fixed contact point(110). A shaft(500) moves a second mover(400) and is operated by a handle(600). A first mover(300) is formed in a first moving contact point(310) and a second moving contact point(320). An extinguishing device(700) blocks an arc path before the arc is cooled. An arc blocking layer(730) includes an insulation unit and a horizontal unit with a returning spring(740).

Description

Extinguishing Device for Low Voltage Breaker

The present invention relates to a low voltage circuit breaker and, in particular, to an arc extinguishing device for a low voltage circuit breaker that eliminates arc discharge.

In general, low voltage circuit breakers are used for the purpose of protecting people and property by protecting them from overload and short-circuit accidents within the necessary conditions. In particular, the problem of how to cut off the circuit at high speed in the event of a short circuit is very important. .

The arc extinguishing structure of a conventional low voltage circuit breaker cools the arc through air or metal iron pieces at the time of contact opening to extinguish the arc to block the short circuit current.

The structure of the low pressure circuit breaker according to the prior art is as shown in Figs.

1 is a view showing a state before the low voltage circuit breaker operates (on operation) according to the prior art, and FIG. 2 is a view showing a state after the low voltage circuit breaker operates according to the prior art (off operation).

As shown in FIGS. 1 and 2, the low voltage circuit breaker according to the related art includes a stator 12 having a lower fixed contact 10 formed therein, and a movable element having a movable contact 20 formed in contact with the fixed contact 10. 22), a handle 30 and a metal iron piece 50 connected to the mover 22 to move the mover 22 up and down, and a handle 40 to rotate the shaft 30 connected to the shaft 30. It includes.

The operation of the low-voltage circuit breaker according to the prior art configured as described above is as follows.

The conventional low pressure circuit breaker operates the shaft 30 by the manipulation of the handle 40, and the movable contact 20 of the mover 22 connected to the shaft 30 in a rotational manner by the shaft 30 is connected to the stator ( 12) to perform the operation at the time of off contact when disconnected from the fixed contact (10) and to push the mover (22) up by the electromagnetic repulsive force between the fixed contact 10 and the movable contact (20) when the current is energized to separate between the contacts Perform the action.

In the conventional low voltage circuit breaker, it is important for the circuit breaker to quickly extinguish the arc by cooling the arc generated at the time of contact separation using air or metal iron pieces 50.

However, the arc extinguishing structure of the conventional low voltage circuit breaker is a cause of the circuit breaker failure because the arc cooling time is prolonged due to the method of cooling the arc by air or by using a metal iron piece.

In order to solve this problem, the present invention has an object to provide a low pressure circuit breaker extinguishing device forcibly blocking the arc path before the arc is cooled.

Another object of the present invention is to provide a low voltage circuit breaker in which an on-off operation of breaking a circuit by converting a rotary motion of a shaft into linear motion is performed by two pairs of contacts.

An apparatus for extinguishing a low voltage circuit breaker according to a feature of the present invention for achieving the above technical problem includes a stator 1 having a fixed contact 1 formed therein; A stator 2 having a fixed contact 2 formed thereon; A shaft connected to one end of the mover 2 to move the mover 2 and to be operated by a handle operation; A mover 1 connected to the other end of the mover 2 and having a movable contact 1 and a movable contact 2 formed in contact with the fixed contact 1 and the fixed contact 2, respectively; And an extinguishing device forcibly blocking the arc path before the arc generated during the separation operation between the fixed contact point 1 and the movable contact point 1 and the fixed contact point 2 and the movable contact point 2 is cooled. By converting the rotational force of the shaft to the linear motion through the mover 2, the movable contact 1 and the movable contact 2 attached to the mover 1 to the fixed contact 1 and the fixed contact 2, respectively It is characterized in that the on or off operation to contact or disconnect to break the circuit.

The extinguishing device of a low voltage circuit breaker according to another aspect of the present invention includes a stator 1 having a fixed contact 1 formed therein; A stator 2 having a fixed contact 2 formed thereon; A mover 1 connected to one end of the shaft operated by a handle operation and having a movable contact 1 and a movable contact 2 formed on one side thereof, the movable contact 1 and the movable contact 2 respectively contacting the fixed contact 1 and the fixed contact 2; And an extinguishing device forcibly blocking the arc path before the arc generated during the separation operation between the fixed contact point 1 and the movable contact point 1 and the fixed contact point 2 and the movable contact point 2 is cooled. By converting the rotational force of the shaft to the linear motion of the mover 1, the movable contact 1 and the movable contact 2 attached to the movable member 1 are in contact with or separated from the fixed contact 1 and the fixed contact 2, respectively. It characterized in that to perform the on or off operation to cut off.

By the above-described configuration, the present invention uses the extinguishing device additionally configured to the low pressure circuit breaker to forcibly cut off the arc path before the arc is cooled, so that the arc cooling time is faster and a more reliable cutoff action improves the short-circuit breaking capacity. There is.

According to the present invention, two pairs of contacts are used to turn on and off the circuit by converting the rotary motion of the shaft of the low voltage circuit breaker into linear motion, thereby reducing the arc voltage generated when the short-circuit current is cut in half to double the breaking capacity. It is effective to improve the above.

The present invention can prevent the breakage of the mover 1, stator 1 and stator 2 when the stator 1 and the stator 2 is moved in contact with the stator 1 and stator 2 to move slightly back, the low pressure circuit breaker It has the effect of extending the life.

1 is a view showing a state before the low-voltage circuit breaker according to the prior art (on operation).
2 is a view showing a state after the low-voltage circuit breaker according to the prior art (off operation).
3 is a perspective view showing the arc extinguishing device of the low-voltage circuit breaker according to an embodiment of the present invention.
4 is a view showing a state before the low voltage circuit breaker extinguishing device (on operation, before opening) according to an embodiment of the present invention.
5 is a view showing a state after the extinguishing device of the low-voltage circuit breaker according to an embodiment of the present invention (off operation, after opening).
<Explanation of symbols for the main parts of the drawings>
100: stator 2 110: fixed contact 2
200: stator 1 210: fixed contact 1
300: mover 1 300a: mover support
300b: contact section 310: movable contact 1
320: movable contact 2 400: mover 2
500: shaft 600: handle
700; Lo 710: arc case
720: arc cover 730: arc barrier
740: return spring 750: metal iron piece

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In the drawings, parts irrelevant to the description are omitted in order to clearly describe the present invention, and like reference numerals designate like parts throughout the specification.

Throughout the specification, when a part is said to "include" a certain component, it means that it can further include other components, without excluding other components unless specifically stated otherwise.

Figure 3 is a perspective view showing the arc extinguishing device of the low pressure circuit breaker according to an embodiment of the present invention, Figure 4 is a view showing a state before the arc extinguishing device of the low pressure circuit breaker according to an embodiment of the present invention (on operation, before opening) 5 is a view showing a state after the extinguishing device of the low-voltage circuit breaker according to an embodiment of the present invention (off operation, after opening).

As shown in FIGS. 3 to 5, the extinguishing device for a low voltage circuit breaker according to an embodiment of the present invention includes a stator 2 (100) having a fixed contact point 2 (110) and a stator 1 (200 having a fixed contact point 1 (210) formed thereon. ), The mover 1 (300), the mover 2 (400), the mover 2 (400) is connected to the shaft 500 for moving the mover 2 (400), the shaft 500 is connected to the shaft 500 It includes a handle 600 and the extinguishing device 700 for rotating.

The mover 2 400 is connected to one side of the shaft 500, and when the shaft 500 is operated by the manipulation of the handle 600, the mover 2 400 is moved up and down by rotation by the shaft 500.

The mover 1 300 is a contact portion 300b having a 'c' shape at one end of the longitudinal supporter 300a and the mover support 300a coupled to the mover 2 400 by a fastening means. ).

Here, the contact portion 300b is configured in a 'c' shape, but may be configured in various forms such as 'E', 'F', and 'M'.

The contact part 300b includes a connection part for connecting a pair of contact forming parts and a contact forming part in which a movable contact 2 320 is formed at a position corresponding to the movable contact 1 310 and the movable contact 1 310.

Stator 1 (200) and stator 2 (100) according to an embodiment of the present invention can be configured in a structure that can move finely to add stability of the contact.

When the movable contact 1 310 and the movable contact 2 320 of the mover 1 300 move and collide with the stator 1 200 and the stator 2 100, the stator 1 200 and the stator 2 100 In the case of moving back slightly within a certain error range, it is possible to prevent breakage of the mover 1 (300), the stator 1 (200) and the stator 2 (100) to extend the life of the low-voltage circuit breaker.

Movable 1 by converting the rotational force of the shaft 500 operated by the operation of the handle 600 to the linear motion of the mover 1 (300) connected to one side of the mover 2 (400) through the mover 2 (400) The movable contact 1 310 and the movable contact 2 320 attached to the 300 come into contact with the fixed contact 1 210 and the fixed contact 2 110, respectively.

The contact of the present invention consists of two pairs on one pole, thereby reducing the arc voltage generated when the short-circuit current is cut in half, thereby improving the breaking capacity by more than two times.

In the embodiment of the present invention, due to the structure of the mover 1 (300) configured in the 'c' form is composed of two pairs of contacts, but is not limited to this form of contact by modifying the structure of the mover 1 (300) Can be composed of two or more pairs.

The extinguishing device 700 according to the embodiment of the present invention includes an arc case 710, an arc cover 720, an arc blocking film 730, a return spring 740, and a metal iron piece 750.

The arc blocking layer 730 includes a horizontal portion (not shown) on which the return spring 740 is formed, and a pair of insulating portions extending downward in a direction perpendicular to the horizontal portion.

The insulating part 730a forms an arc path in the middle or forms an opening part to move the movable contact 1 310 and the movable contact 2 320.

If the arc pressure generated when the arcing device 700 is separated between the movable contact 1 310 and the fixed contact 1 (210), the movable contact 2 (320) and the fixed contact 2 (110) is greater than the predetermined arc pressure, Due to the generated arc pressure, the arc shielding film 730 is raised upward and fixed to the movable contact 1 310, the fixed contact 1 210, and the movable contact 2 320 by the insulating portion 730a of the arc shielding film 730. Insulate between contacts 2 (110).

The extinguishing device 700 forcibly interrupts the arc path before the arc is cooled, and when the arc pressure is extinguished, the extinguishing device 700 returns to its original position by the return spring 740 to be in contact with the contact.

The extinguishing device 700 serves to cool the arc of the plurality of metal pieces 750, and may be configured by removing the metal pieces 750.

The operation of the extinguishing device of the low voltage circuit breaker according to the embodiment of the present invention configured as described above is as follows.

The low pressure circuit breaker according to the embodiment of the present invention operates the shaft 500 by the manipulation of the handle 600 and moves the mover 2 400 connected to the shaft 500 in a rotational manner by the shaft 500.

In the low pressure circuit breaker, as the mover 2 400 moves by the rotation of the shaft 500, the mover 1 300 connected to one side of the mover 2 400 is converted into linear motion.

In the low pressure circuit breaker, when the mover 1 300 moves linearly, the movable contact 1 310 and the movable contact 2 320 formed on the mover 1 300 are fixed to the fixed contact 1 210 of the mover 1 300. And the contact point 2 (110) of the mover 2 (400), respectively, to perform the on operation of the circuit.

The low pressure circuit breaker transmits the rotational force of the shaft 500 to the mover 1 (300) through the mover 2 (400) to generate electron repulsion force and arc pressure due to the current between the contacts during the off operation.

The low pressure circuit breaker compresses and deforms the return spring 740 of the arc blocking film 730 by the generated arc pressure when the arc pressure generated when the contact is opened exceeds a predetermined arc pressure, thereby raising the arc blocking film 730 upward. The insulating part 730a of the blocking film 730 insulates between the movable contact 1 310 and the fixed contact 1 210 and the movable contact 2 320 and the fixed contact 2 110 to force the arc before cooling. To cut off the arc path.

When the arc pressure is extinguished, the low pressure circuit breaker is operated by the return spring 740 and the arc shielding film 730 is returned to its original position, and the mover 1 (300) moves linearly through the mover 2 (400) by the rotation of the shaft (500). The contact point 1 310 and the fixed contact point 1 210, the movable contact point 2 320, and the fixed contact point 2110 may be contacted.

In another embodiment of the present invention, the low pressure circuit breaker removes the mover 2 400 and connects the shaft 500 and the mover 1 300 to move the mover 1 300 in a linear motion to move the mover 1 300. Movable contact 1 310 and the movable contact 2 (320) formed in the contact with or separated from the fixed contact 1 (210) of the mover 1 (300) and the fixed contact 2 (110) of the mover 2 (400), respectively, An on or off operation is performed to break the circuit.

The embodiments of the present invention described above are not implemented only by the apparatus and / or method, but may be implemented through a program for realizing functions corresponding to the configuration of the embodiment of the present invention, a recording medium on which the program is recorded And such an embodiment can be easily implemented by those skilled in the art from the description of the embodiments described above.

Although the embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto, and various modifications and improvements of those skilled in the art using the basic concepts of the present invention defined in the following claims are also provided. It belongs to the scope of rights.

Claims (7)

In the arc extinguishing device of the low voltage circuit breaker which interrupts a circuit using electromagnetic repulsion between conductors,
A stator 1 having a fixed contact 1 formed thereon;
A stator 2 having a fixed contact 2 formed thereon;
A shaft connected to one end of the mover 2 to move the mover 2 and to be operated by a handle operation;
A mover 1 connected to the other end of the mover 2 and having a movable contact 1 and a movable contact 2 formed in contact with the fixed contact 1 and the fixed contact 2, respectively; And
And a extinguishing device forcibly blocking the arc path before the arc generated during the separation operation between the fixed contact point 1 and the movable contact point 1, the fixed contact point 2 and the movable contact point 2 is cooled,
The movable contact 1 and the movable contact 2 attached to the movable member 1 are fixed to the fixed contact 1 by fixing the rotational force of the shaft to the linear motion through the movable member 2 by the handle operation. A low voltage circuit breaker protection device, characterized in that to perform an on or off operation of contacting or disconnecting each of the contacts 2 to break a circuit. In the arc extinguishing device of the low voltage circuit breaker which interrupts a circuit using electromagnetic repulsion between conductors,
A stator 1 having a fixed contact 1 formed thereon;
A stator 2 having a fixed contact 2 formed thereon;
A mover 1 connected to one end of the shaft operated by a handle operation and having a movable contact 1 and a movable contact 2 formed on one side thereof, the movable contact 1 and the movable contact 2 respectively contacting the fixed contact 1 and the fixed contact 2; And
And a extinguishing device forcibly blocking the arc path before the arc generated during the separation operation between the fixed contact point 1 and the movable contact point 1, the fixed contact point 2 and the movable contact point 2 is cooled,
The rotational force of the shaft is converted into linear motion by the handle operation so that the movable contact 1 and the movable contact 2 attached to the mover 1 contact the fixed contact 1 and the fixed contact 2, respectively. A low voltage circuit breaker extinguishing device, characterized in that to perform an on or off operation to disconnect the circuit. The method according to claim 1 or 2,
The arc extinguishing device generates an arc shielding film by the generated arc pressure when the arc pressure generated during the separation operation between the fixed contact point 1 and the movable contact point 1 and between the fixed contact point 2 and the movable contact point 2 exceeds a predetermined arc pressure. Compressing and deforming the return spring of the arc shielding film is raised upward, and the insulating portion of the arc blocking film between the fixed contact 1 and the movable contact 1, characterized in that between the fixed contact 2 and the movable contact 2, characterized in that Extinguishing device of low voltage circuit breaker. The method of claim 3,
The arc shielding film includes a horizontal part having the return spring formed therein and an insulating part extending downwardly at a right angle to the horizontal part, and one side of the insulating part forms an arc path or moves the movable contact 1 and the movable contact 2 to move. An arc extinguishing device for a low voltage circuit breaker, characterized in that an opening is formed. The method according to claim 1 or 2,
The mover 1 has a contact portion having a 'c' shape so as to be formed at the movable contact 2 at a position corresponding to the movable contact 1 and the movable contact 1 at one end of the movable supporter and the movable supporter in a longitudinal direction.
The extinguishing device of a low voltage circuit breaker comprising a. The method according to claim 1 or 2,
The stator 1 and the stator 2 is a low voltage circuit breaker extinguishing device, characterized in that the movable contact 1 and the movable contact 2 is pushed back slightly within a certain error range at the moment when the moving contact and contact. The method according to claim 1 or 2,
The extinguishing device is a fire extinguishing device of a low pressure circuit breaker, characterized in that a plurality of metal iron pieces for cooling the arc is provided on one side.

KR1020100116672A 2010-11-23 2010-11-23 Extinguishing device for low voltage breaker KR101113407B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020100116672A KR101113407B1 (en) 2010-11-23 2010-11-23 Extinguishing device for low voltage breaker

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020100116672A KR101113407B1 (en) 2010-11-23 2010-11-23 Extinguishing device for low voltage breaker

Publications (1)

Publication Number Publication Date
KR101113407B1 true KR101113407B1 (en) 2012-02-29

Family

ID=45840282

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020100116672A KR101113407B1 (en) 2010-11-23 2010-11-23 Extinguishing device for low voltage breaker

Country Status (1)

Country Link
KR (1) KR101113407B1 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR19980054545U (en) * 1996-12-31 1998-10-07 이종수 Arc extinguishing device for circuit breaker
JP2006059758A (en) 2004-08-23 2006-03-02 Fuji Electric Fa Components & Systems Co Ltd Arc-extinguishing device for circuit breaker
KR200437071Y1 (en) 2006-12-18 2007-11-02 엘에스산전 주식회사 A mold cased circuit breaker
KR101052696B1 (en) 2009-03-11 2011-07-28 엘에스산전 주식회사 Handle of circuit breaker

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR19980054545U (en) * 1996-12-31 1998-10-07 이종수 Arc extinguishing device for circuit breaker
JP2006059758A (en) 2004-08-23 2006-03-02 Fuji Electric Fa Components & Systems Co Ltd Arc-extinguishing device for circuit breaker
KR200437071Y1 (en) 2006-12-18 2007-11-02 엘에스산전 주식회사 A mold cased circuit breaker
KR101052696B1 (en) 2009-03-11 2011-07-28 엘에스산전 주식회사 Handle of circuit breaker

Similar Documents

Publication Publication Date Title
CN107359068B (en) Moulded case circuit breaker with compound arc extinguishing performance
CN107359067B (en) Miniature circuit breaker with stronger arc extinguishing ability
KR100616084B1 (en) Pressure trip device of the circuit breaker
WO2013127084A1 (en) Vacuum arc-extinguishing chamber with fixed fracture
CN102486982A (en) Breaker with forced flash barrier device
ZA202304243B (en) Quick tripping device and circuit breaker
KR20130000093U (en) A circuit braker
JP2007324038A (en) Circuit breaker
CN107342178B (en) High-breaking miniature circuit breaker
CN107369593A (en) A kind of operating mechanism of break protective switch
CN101170034A (en) Small breaker
CN107393779B (en) AC/DC universal circuit breaker with strong arc extinguishing effect
CN107342198B (en) Moulded case circuit breaker with powerful disconnected short-circuit current ability of breaking
CN107393777B (en) Moulded case circuit breaker with high breaking performance
CN107527773B (en) Universal circuit breaker with arc extinguishing performance
CN107393780B (en) Miniature circuit breaker with strong breaking capacity
KR101113407B1 (en) Extinguishing device for low voltage breaker
CN107359066B (en) Clamp type arc extinguishing device for circuit breaker
CN107204263B (en) Refer to the slot motor construction of breaker for high-amperage more
TWM627824U (en) Arc striking structure of leakage breaker
CN107342196B (en) Arc extinguishing device of high-breaking plastic casing type circuit breaker
CN113555260A (en) Arc extinguishing and breaking device
CN107342197B (en) Arc extinguishing device of sliding plate type circuit breaker
CN207303020U (en) A kind of high breaking moulded case circuit breaker arc-control device
KR100574423B1 (en) A circuit breaker having a pressure trip device

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
FPAY Annual fee payment

Payment date: 20150130

Year of fee payment: 4

FPAY Annual fee payment

Payment date: 20191030

Year of fee payment: 8

R401 Registration of restoration