CN109616389A - A kind of static contact structure and its arc quenching system applied on low-voltage intelligent circuit breaker - Google Patents
A kind of static contact structure and its arc quenching system applied on low-voltage intelligent circuit breaker Download PDFInfo
- Publication number
- CN109616389A CN109616389A CN201811615585.2A CN201811615585A CN109616389A CN 109616389 A CN109616389 A CN 109616389A CN 201811615585 A CN201811615585 A CN 201811615585A CN 109616389 A CN109616389 A CN 109616389A
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- China
- Prior art keywords
- static contact
- arc
- bracket
- circuit breaker
- low
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Classifications
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- 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
-
- 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
Landscapes
- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The invention discloses a kind of static contact structures and its arc quenching system applied on low-voltage intelligent circuit breaker, including retaining frame, arc extinguishing external member and the static contact mechanism being mounted in retaining frame, the retaining frame is made of flame-retardant reinforced nylon plastics, the static contact mechanism is mounted on the lower section of arc extinguishing external member, the static contact mechanism includes static contact, it is connected to the terminal plate and flexible circuit conductor of static contact front end, from top to bottom it is socketed in the sheath of static contact outer wall, it is mounted on the torsional spring of static contact end, the bracket being mounted below static contact, the bracket is equipped with movable axis and fixing axle for installing torsional spring, the end of the torsional spring is limited by movable axis, the fixing axle sequentially passes through bracket, torsional spring and static contact, it is welded between the terminal plate and static contact by flexible circuit conductor, it is equipped with soft baffle simultaneously, the soft baffle be fitted in terminal plate and The upper surface of flexible circuit conductor.
Description
Technical field
The invention belongs to low voltage electrical apparatus technology fields, and in particular to a kind of static contact applied on low-voltage intelligent circuit breaker
Structure and its arc quenching system.
Background technique
In low-voltage circuit breaker, the height key of breaking capacity is static contact structure and its arc quenching system part, wherein
The static contact structure of breaker be divided into movable retrusive static contact and fixed stationary contact first two, currently, the static contact of breaker is big
Mostly use fixed static contact, on the one hand, when contact is connected, since static contact is without cushion effect, sometimes results in and turn hard on, make touching
Head rebound, which disconnects generating, connects electric arc, and when static contact is closed again, dynamic and static contact surface makes metal be in melting because of electric arc
State, to generate contact welding；On the other hand, in contact disjunction, rely solely on moving contact reprimand open, cause moving contact with
Static contact opening velocity is slower, and electric arc is short, fails quickly to be driven onto arc-chutes extinguishing, enables breaking capacity low.And some are used movably
Static contact, structure are L-type, are connected by the rear end in its lower end using compressed spring (abbreviation pressure spring) and using braided wire
It realizes movably, but effective arc protective treatment is not carried out to static contact, connection row and braided wire, it is produced when due to disjunction
Electric arc can scaling loss static contact, connection row or conducting wire, influence the performance of breaker.Such as patent name are as follows: a kind of disconnected for plastic housing
The movable static contact structure of road device, number of patent application are as follows: the Chinese utility model patent of 201110111481.X discloses one kind
It include that static contact and static contact rotary shaft, static contact are enclosed with stationary contact for the movable static contact structure of breaker of plastic casing
The rear portion of head plastic part, static contact plastic part and rear static contact rotates axis connection plastic stent by static contact, and plastic stent connects
Connection row is equipped with pressure spring, the connection copper litz wire between connection row and static contact, institute between the rear portion and plastic stent of static contact
It is two fan-shaped bilateral symmetries in the fan-shaped boss of static contact, two fan-shaped boss that the rear portion for stating static contact plastic part, which is section,
Centre be equipped with and the rear portion of first through hole and static contact is equipped with that third through-hole is coaxial, and static contact rotary shaft is across first, third
Through-hole and its both ends connect plastic stent, and the intermediate position of plastic stent is equipped with the first cavity, and rear portion is equipped with the second cavity, and first
It is copper litz wire in cavity, rear portion and the pressure spring of static contact plastic part table static contact is accommodated in the second cavity.This stationary contact
The structure of head is to realize that movable fixed contact, static contact plastic part are logical using pressure spring by the lower part rear end of L-type static contact
Second through-hole and static contact are fixed using closing-up, although electric arc burn static contact can be prevented, its static contact
The connection row of lower end connection and connection braided wire are not accomplished to protect well, and in contact disjunction, electric arc will cause connection
Generated metallic particles is sprayed onto or is sticked on the connection row and conducting wire of lower end when row and connection braided wire scaling loss or arc extinguishing, shadow
Ring the performance of breaker；Furthermore due to realizing movable fixed contact using pressure spring by the lower part rear end in L-type static contact, break
Road device closes a floodgate at work, and pressure spring is in compressive state, and the fever of static contact current lead-through generates a large amount of heat and conducts to pressure
Spring increases pressure spring local temperature, and pressure spring is made to generate annealing, and the elastic property of pressure spring reduces, and generates permanent deformation, elastic force subtracts
It is small, after long-time service, the repulsion and reset force when contact pressure, disjunction can be reduced, causes breaking speed slow, is unable to reach ideal
Arc quenching effect, breaking capacity reduce.Further, add complex process, component will pass through multiple tracks production process during installation, take
When it is laborious, production efficiency is low.
Summary of the invention
For overcome the deficiencies in the prior art, the present invention provides a kind of static contact knot applied on low-voltage intelligent circuit breaker
Structure and its arc quenching system.
The technical solution adopted by the present invention to solve the technical problems is:
A kind of static contact structure and its arc quenching system applied on low-voltage intelligent circuit breaker, including retaining frame, be mounted in retaining frame
Arc extinguishing external member and static contact mechanism, the retaining frame is made of flame-retardant reinforced nylon plastics, and the static contact mechanism, which is mounted on, goes out
The lower section of arc external member, the static contact mechanism include static contact, the terminal plate for being connected to static contact front end and flexible circuit conductor, by up to
Under be socketed in the sheath of static contact outer wall, the torsional spring for being mounted on static contact end, the bracket being mounted below static contact, the branch
Frame is equipped with movable axis and fixing axle for installing torsional spring, and the end of the torsional spring is limited by movable axis, the fixing axle
Bracket, torsional spring and static contact are sequentially passed through, is welded between the terminal plate and static contact by flexible circuit conductor, while being equipped with soft gear
Plate, the soft baffle are fitted in the upper surface of terminal plate and flexible circuit conductor.
In the present invention, the arc extinguishing external member includes shield and arc-chutes, and the shield and arc-chutes are cooperatively connected, described
Arc extinguishing external member, which is plugged in retaining frame, forms spark chamber, and the shield is equipped with bracket groove, and bracket groove two sides are equipped with the shelves arc for helping arc extinguishing
Plate, the shelves arc plate are connected with arc-chutes cooperation.
In the present invention, the top of the static contact is equipped with contact, and described static contact one end is equipped with U-shaped structure chamber, U-shaped
One end connecting terminal of structure chamber, the other end are connect by flexible circuit conductor with terminal plate, and the lower part of the static contact is equipped with for branch
Two through-holes that static contact carries out kicking motion are supportted, described two through-holes are each passed through movable axis and fixing axle.
In the present invention, the mounting groove for push for static contact kicking motion, the torsional spring are equipped in the bracket
Connection static contact is mounted in mounting groove by movable axis and fixing axle, and the two sides of the bracket are equipped with for installation activity axis
Arcuate socket and circular hole for installing fixing axle, the two sides of the bracket are symmetrical about the center line of bracket.
In the present invention, the soft baffle is made of glass fiber material, and the middle part of the soft baffle, which is equipped with, to be used for
Across a hole of keeping away for static contact, the static contact passes through and keeps away the top that soft baffle is stretched out in a hole.
In the present invention, the lower part of the sheath is equipped with for the limit hole across movable axis, the outside of the limit hole
Be equipped with the baffle that buffer limit is pushed for static contact, inner wall and the limit hole of the baffle match, and the baffle is arranged
In the top of limit hole.
In the present invention, the retaining frame is made of flame-retardant reinforced nylon plastics.
In the present invention, the retaining frame is equipped with the support backplate for installing arc extinguishing external member, the arc extinguishing external member installation
It is equipped with the stretching hole stretched out from lower to upper for static contact at the middle part of the top of support backplate, the support backplate, it is described quiet
Contact passes through stretching hole and protrudes into spark chamber.
In the present invention, the center of circle of the arcuate socket and the center of circle of circular hole are respectively positioned on the central axis of fixing axle.
In the present invention, multi-disc arc extinguishing grid pieces are from top to bottom disposed in the arc-chutes, on the arc extinguishing grid pieces
Equipped with the arc chute being recessed inwardly, the arc chute is positioned close to the side of retaining frame.
The beneficial effects of the present invention are: a kind of 1, static contact structure applied on low-voltage intelligent circuit breaker of the invention and
Its arc quenching system, by the end of static contact install torsional spring, make static contact become movable fixed contact, and torsional spring be mounted on it is quiet
The end of contact, it is few with the contact area of static contact, it is extremely low that the temperature to torsional spring is conducted by static contact, ensure that torsional spring
Service performance；Further by the way that arc extinguishing external member, sheath and retaining frame, sheath and shield are arranged at the movement of static contact and moving contact
Frame is flame-retardant reinforced nylon material, and electric arc and thermal energy are generated in breaker disjunction, and arc extinguishing cavity temperature increases, flame-retardant reinforced nylon
Imperial material is heated to generate bulk gas, increases the air pressure of retaining frame side, the air pressure of arc-chutes side is lower, and air-flow makes electric arc become
It to one side stretching of arc-chutes, draws electric arc longer, is driven onto arc-chutes internal grid depths, electric arc is made to radiate, arc temperature drop is low, arc electricity
Resistance increases, and limits arc current, therefore arc extinguishing is faster, improves arc quenching effect.
2, a kind of static contact structure and its arc quenching system applied on low-voltage intelligent circuit breaker of the invention, by quiet
U-shaped structure chamber set by contact, so that the current direction in current direction and moving contact in static contact is on the contrary, form electronic reprimand
Power, in breaker disjunction, electrodynamic repulsion force can quick pull-up moving contact, make dynamic/static contact quick separating, so that fast arc extinction, makes
The interrupting performance of breaker greatly promotes.
Detailed description of the invention
The present invention is further described with embodiment with reference to the accompanying drawing:
Fig. 1 is the integral installation structural schematic diagram of the present embodiment；
Fig. 2 is the structural schematic diagram of the present embodiment static contact mechanism；
Fig. 3 is the whole explosive view of the present embodiment；
Fig. 4 is the structural schematic diagram of the present embodiment shield；
Fig. 5 is the structural schematic diagram of the present embodiment static contact；
Fig. 6 is the structural schematic diagram of the present embodiment bracket；
Fig. 7 is the structural schematic diagram of the soft baffle of the present embodiment；
Fig. 8 is the structural schematic diagram of the present embodiment sheath；
Fig. 9 is the structural schematic diagram of the present embodiment retaining frame；
Figure 10 is the structural schematic diagram of the present embodiment arc-chutes；
Figure 11 is the structural schematic diagram of the present embodiment torsional spring.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described.
Embodiment:
Referring to figs. 1 to Fig. 3, present embodiment discloses a kind of static contact structures and its arc extinguishing applied on low-voltage intelligent circuit breaker
System, including retaining frame 1, the arc extinguishing external member 2 and static contact mechanism 3 that are mounted in retaining frame 1, the retaining frame 1 is flame-retardant reinforced nylon
Material is made, and retaining frame 1 can decomposite bulk gas when heated, so that electric arc is blowed to 22 side of arc-chutes, guarantees the quick of electric arc
Extinguish, the static contact mechanism 3 is mounted on the lower section of arc extinguishing external member 2, and the static contact mechanism 3 includes static contact 31, is connected to
The terminal plate 32 and flexible circuit conductor of 31 front end of static contact, are mounted on stationary contact at the sheath 33 for being from top to bottom socketed in 31 outer wall of static contact
The torsional spring 34 of first 31 end, the bracket 35 for being mounted on 31 lower section of static contact, the bracket 35 are equipped with for installing torsional spring 34
The end of movable axis 36 and fixing axle 37, the torsional spring 34 is limited by movable axis 36, and the fixing axle 37 sequentially passes through bracket
35, torsional spring 34 and static contact 31 are welded between the terminal plate 32 and static contact 31 by flexible circuit conductor, while being equipped with soft baffle
38, the soft baffle 38 is fitted in the upper surface of terminal plate 32 and flexible circuit conductor, by installing torsional spring in the end of static contact 31
34, when static contact 31 and moving contact closure, due to the effect of pressure under moving contact, static contact 31 can be downward by torsional spring 34
Buffering forms the motive force of a slow pressure, when static contact 31 is separated with moving contact, by the motive force of the slow pressure of static contact to dynamic
Contact generates a upward thrust, makes the separating rate of moving contact faster, so that static contact 31 is made to become movable fixed contact 31,
The speed for improving disconnection reduces the generation of electric arc, reduces the generation of metallic particles, improves the breaking capacity and use of breaker
It is service life, and torsional spring 34 is mounted on the end of static contact 31, few with the contact area of static contact 31, by static contact conduct to
The temperature of torsional spring is extremely low, ensure that the service performance of torsional spring 34；Further by the movement of static contact 31 and moving contact
Arc extinguishing external member 2 and retaining frame 1 are set, and retaining frame 1 is flame-retardant reinforced nylon material, and breaker generates electric arc and thermal energy in disjunction, goes out
Arc cavity temperature increases, and flame-retardant reinforced nylon material is heated to generate bulk gas, increases the air pressure of 1 side of retaining frame, arc-chutes
The air pressure of 22 sides is lower, and air-flow makes electric arc tend to 22 1 side stretching of arc-chutes, draws electric arc longer, is driven onto arc-chutes 22
Grid depths, therefore arc extinguishing is faster, improves arc quenching effect.
1, as preferred embodiment, referring to Fig. 4, the arc extinguishing external member 2 includes shield 21 and arc-chutes 22, the shield
Cover 21 is cooperatively connected with arc-chutes 22, and the arc extinguishing external member 2, which is plugged in retaining frame 1, forms spark chamber, and the shield 21 is equipped with
Bracket groove 211,211 two sides of bracket groove are equipped with the shelves arc plate 212 for helping arc extinguishing, and the shelves arc plate 212 is connected with the cooperation of arc-chutes 22, institute
It states and is from top to bottom disposed with multi-disc arc extinguishing grid pieces 221 in arc-chutes 22, the arc extinguishing grid pieces 221 are equipped with and are recessed inwardly
Arc chute 222, the arc chute 222 are positioned close to the side of retaining frame 1, it is ensured that reliably extinguish electric arc.
As preferred embodiment, referring to Fig. 5, the top of the static contact 31 is equipped with contact 311 and static contact 31 1
End is equipped with U-shaped structure chamber 313, one end connecting terminal 311 of U-shaped structure chamber 313, and the other end passes through flexible circuit conductor and terminal plate 32
Connection, the torsional spring 34 are mounted remotely from one end of terminal plate 32, and the lower part of the static contact 31, which is equipped with, is used to support static contact
31 carry out two through-holes 312 of kicking motion, and described two through-holes 312 are each passed through movable axis 36 and fixing axle 37.
As preferred embodiment, referring to Fig. 6, it is equipped in the bracket 35 and carries out pushing buffering fortune for static contact 31
Dynamic mounting groove 351, the torsional spring 34 connect static contact 31 and are mounted in mounting groove 351 by movable axis 36 and fixing axle 37,
The two sides of the bracket 35 are equipped with for the arcuate socket 352 of installation activity axis 36 and the circular hole 353 for installing fixing axle 37, institute
The two sides for stating bracket 35 are symmetrical about the center line of bracket 35, and the center of circle of the arcuate socket 352 and the center of circle of circular hole 353 are respectively positioned on
On the central axis of fixing axle 37.
As preferred embodiment, referring to Fig. 7, the soft baffle 38 is made of glass fiber material, plays separation
The effect of barrier prevents electric arc burn when disjunction or blows ferromagnetism steel plate and metallic that electric arc generates is adhered to and leads
On line or terminal plate 32, other performance is influenced.The middle part of the soft baffle 38 is equipped with for keeping away a hole across static contact 31
381, the static contact 31 passes through and keeps away the top that soft baffle 38 is stretched out in a hole 381.
As preferred embodiment, referring to Fig. 8, the lower part of the sheath 33 is equipped with for the limit across movable axis 36
Hole 331, the outside of the limit hole 331 are equipped with the baffle 332 that buffer limit is pushed for static contact 31, the baffle 332
Inner wall match with limit hole 331, the top of limit hole 331 is arranged in the baffle 332, passes through the outer wall in static contact 31
It is socketed sheath 33, electric arc burn or blows static contact 31 when can effectively prevent disjunction, or the metallic generated is adhered to
On static contact 31, guarantee the working performance of static contact 31.
As preferred embodiment, referring to Fig. 9, the retaining frame 1 is equipped with the support backplate for installing arc extinguishing external member 2
11, the arc extinguishing external member 2 be mounted on support backplate 11 top, it is described support backplate 11 middle part be equipped with for static contact 31 by
Under the stretching hole 111 up stretched out, the static contact 31, which passes through, to be stretched out hole 111 and protrudes into spark chamber.
The foregoing is merely the preferred embodiment of the present invention, as long as realizing the skill of the object of the invention with essentially identical means
Art scheme belongs within protection scope of the present invention.
Claims (9)
1. a kind of static contact structure and its arc quenching system applied on low-voltage intelligent circuit breaker, it is characterised in that: including retaining frame
(1), the arc extinguishing external member (2) and static contact mechanism (3) being mounted on retaining frame (1), the retaining frame (1) are flame-retardant reinforced nylon plastics
It is made, the static contact mechanism (3) is mounted on the lower section of arc extinguishing external member (2), and the static contact mechanism (3) includes static contact
(31), be connected to the terminal plate (32) of static contact (31) front end, the sheath (33) for being from top to bottom socketed in static contact (31) outer wall,
The torsional spring (34) for being mounted on static contact (31) end, the bracket (35) being mounted below static contact (31), on the bracket (35)
Equipped with the movable axis (36) and fixing axle (37) for installing torsional spring (34), the end of the torsional spring (34) passes through movable axis (36)
Limit, the fixing axle (37) sequentially pass through bracket (35), torsional spring (34) and static contact (31), the terminal plate (32) and stationary contact
It is welded between head (31) by flexible circuit conductor, while being equipped with soft baffle (38), the soft baffle (38) is fitted in terminal plate
(32) and welding flexible circuit conductor upper surface.
2. a kind of static contact structure and its arc quenching system applied on low-voltage intelligent circuit breaker according to claim 1,
It is characterized by: the arc extinguishing external member (2) includes shield (21) and arc-chutes (22), the shield (21) is matched with arc-chutes (22)
Connection is closed, the arc extinguishing external member (2), which is plugged on retaining frame (1), forms spark chamber, and the shield (21) is equipped with bracket groove (211),
Bracket groove (211) two sides are equipped with the shelves arc plate (212) for helping arc extinguishing, and the shelves arc plate (212) is connected with arc-chutes (22) cooperation.
3. a kind of static contact structure and its arc quenching system applied on low-voltage intelligent circuit breaker according to claim 1,
It is characterized by: the top of the static contact (31) is equipped with contact (311), described static contact (31) one end is equipped with U-shaped structure chamber
(313), one end connecting terminal (311) of U-shaped structure chamber (313), the other end are connect by flexible circuit conductor with terminal plate (32), institute
The lower part for stating static contact (31), which is equipped with, is used to support two through-holes (312) that static contact (31) carry out kicking motion, described two
Through-hole (312) is each passed through movable axis (36) and fixing axle (37).
4. a kind of static contact structure and its arc quenching system applied on low-voltage intelligent circuit breaker according to claim 1,
It is characterized by: the mounting groove (351) for push for static contact (31) kicking motion is equipped in the bracket (35), it is described
Torsional spring (34) connection static contact (31) is mounted in mounting groove (351) by movable axis (36) and fixing axle (37), the bracket
(35) two sides are equipped with for the arcuate socket (352) of installation activity axis (36) and the circular hole (353) for installing fixing axle (37),
The two sides of the bracket (35) are symmetrical about the center line of bracket (35).
5. a kind of static contact structure and its arc quenching system applied on low-voltage intelligent circuit breaker according to claim 1,
It is characterized by: the soft baffle (38) is made of glass fiber material, the middle part of the soft baffle (38), which is equipped with, to be used for
Across keeping away a hole (381) for static contact (31), the static contact (31), which passes through, keeps away the upper of the soft baffle (38) of a hole (381) stretching
Side.
6. a kind of static contact structure and its arc quenching system applied on low-voltage intelligent circuit breaker according to claim 1,
It is characterized by: the lower part of the sheath (33) is equipped with for the limit hole (331) across movable axis (36), the limit hole
(331) outside be equipped with for static contact (31) push buffer limit baffle (332), the inner wall of the baffle (332) with
Limit hole (331) matches, top of baffle (332) setting in limit hole (331).
7. a kind of static contact structure and its arc quenching system applied on low-voltage intelligent circuit breaker according to claim 2,
It is characterized by: the retaining frame (1) is equipped with the support backplate (11) for installing arc extinguishing external member (2), the arc extinguishing external member (2)
It is mounted on the top of support backplate (11), the middle part of support backplate (11) is equipped with to be stretched out from lower to upper for static contact (31)
Stretching hole (111), the static contact (31) pass through stretch out hole (111) protrude into spark chamber.
8. a kind of static contact structure and its arc quenching system applied on low-voltage intelligent circuit breaker according to claim 4,
It is characterized by: the center of circle of the arcuate socket (352) and the center of circle of circular hole (353) are respectively positioned on the central axis of fixing axle (37)
On.
9. a kind of static contact structure and its arc quenching system applied on low-voltage intelligent circuit breaker according to claim 2,
It is characterized by: being from top to bottom disposed with multi-disc arc extinguishing grid pieces (221), the arc extinguishing grid pieces in the arc-chutes (22)
(221) it is equipped with the arc chute (222) being recessed inwardly, the arc chute (222) is positioned close to the side of retaining frame (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811615585.2A CN109616389B (en) | 2018-12-27 | 2018-12-27 | Be applied to static contact structure on low pressure intelligent circuit breaker and arc extinguishing system thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811615585.2A CN109616389B (en) | 2018-12-27 | 2018-12-27 | Be applied to static contact structure on low pressure intelligent circuit breaker and arc extinguishing system thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109616389A true CN109616389A (en) | 2019-04-12 |
| CN109616389B CN109616389B (en) | 2023-09-05 |
Family
ID=66012054
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811615585.2A Active CN109616389B (en) | 2018-12-27 | 2018-12-27 | Be applied to static contact structure on low pressure intelligent circuit breaker and arc extinguishing system thereof |
Country Status (1)
| Country | Link |
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| CN (1) | CN109616389B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20100042374A (en) * | 2008-10-16 | 2010-04-26 | 동아전기공업 주식회사 | Arc extinguishing device of circuit breaker |
| US20150091678A1 (en) * | 2011-12-26 | 2015-04-02 | Seari Electric Technology Co., Ltd. | Contact structure of low-voltage electrical apparatus |
| CN204558400U (en) * | 2015-05-12 | 2015-08-12 | 博耳(上海)电器开关有限公司 | Static contact system in low-voltage circuit breaker |
| CN105097374A (en) * | 2014-05-16 | 2015-11-25 | 北京人民电器厂有限公司 | Breaker facilitating arc rapid movement and elongation |
| CN208142123U (en) * | 2018-03-30 | 2018-11-23 | 上海良信电器股份有限公司 | Contacts of low-voltage circuit breaker arc-control device structure-improved |
| CN209183489U (en) * | 2018-12-27 | 2019-07-30 | 广东南冠电气有限公司 | A kind of static contact structure and its arc quenching system applied on low-voltage intelligent circuit breaker |
-
2018
- 2018-12-27 CN CN201811615585.2A patent/CN109616389B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20100042374A (en) * | 2008-10-16 | 2010-04-26 | 동아전기공업 주식회사 | Arc extinguishing device of circuit breaker |
| US20150091678A1 (en) * | 2011-12-26 | 2015-04-02 | Seari Electric Technology Co., Ltd. | Contact structure of low-voltage electrical apparatus |
| CN105097374A (en) * | 2014-05-16 | 2015-11-25 | 北京人民电器厂有限公司 | Breaker facilitating arc rapid movement and elongation |
| CN204558400U (en) * | 2015-05-12 | 2015-08-12 | 博耳(上海)电器开关有限公司 | Static contact system in low-voltage circuit breaker |
| CN208142123U (en) * | 2018-03-30 | 2018-11-23 | 上海良信电器股份有限公司 | Contacts of low-voltage circuit breaker arc-control device structure-improved |
| CN209183489U (en) * | 2018-12-27 | 2019-07-30 | 广东南冠电气有限公司 | A kind of static contact structure and its arc quenching system applied on low-voltage intelligent circuit breaker |
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| Publication number | Publication date |
|---|---|
| CN109616389B (en) | 2023-09-05 |
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