CN109509691A - A kind of contact arc extinguishing device and its breaker of breaker - Google Patents
A kind of contact arc extinguishing device and its breaker of breaker Download PDFInfo
- Publication number
- CN109509691A CN109509691A CN201910019026.3A CN201910019026A CN109509691A CN 109509691 A CN109509691 A CN 109509691A CN 201910019026 A CN201910019026 A CN 201910019026A CN 109509691 A CN109509691 A CN 109509691A
- Authority
- CN
- China
- Prior art keywords
- arc
- contact
- guide rod
- striking piece
- breaker
- Prior art date
- Legal status (The legal status 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 status listed.)
- Granted
Links
- 230000008878 coupling Effects 0.000 claims abstract description 9
- 238000010168 coupling process Methods 0.000 claims abstract description 9
- 238000005859 coupling reaction Methods 0.000 claims abstract description 9
- 238000000034 method Methods 0.000 claims abstract description 7
- 230000008569 process Effects 0.000 claims abstract description 6
- 238000000926 separation method Methods 0.000 claims abstract description 6
- 230000003068 static effect Effects 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 8
- 238000005452 bending Methods 0.000 claims description 6
- 230000035699 permeability Effects 0.000 claims description 4
- 210000002421 cell wall Anatomy 0.000 claims description 3
- 238000002679 ablation Methods 0.000 abstract description 4
- 238000010891 electric arc Methods 0.000 description 17
- 238000010586 diagram Methods 0.000 description 6
- 230000009471 action Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000005611 electricity Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000008033 biological extinction Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000005520 electrodynamics Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- 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
A kind of contact arc extinguishing device and its breaker of breaker, contact arc extinguishing device includes dynamic guide rod, quiet guide rod, rotatable arc striking piece and arc extinguishing grid pieces group, the movable contact and stationary contact of face are respectively fixed on dynamic guide rod and quiet guide rod, feature: arc striking piece is rotatably provided on quiet guide rod and is electrically connected with quiet guide rod by the realization that is flexible coupling, face is respectively arranged with and accessible the first arc ignition face and the second arc ignition face on dynamic guide rod and arc striking piece, in movable contact and stationary contact contact process, the second arc ignition face in the first arc ignition face and arc striking piece on dynamic guide rod is prior to movable contact and stationary contact point contact；In movable contact and stationary contact separation process, separated in movable contact with stationary contact after the second arc ignition face in the first arc ignition face and arc striking piece on dynamic guide rod.Breaker includes multiple contact arc extinguishing devices recited above.Realization movable contact is contacted with stationary contact without arc and thick-less vane, reduces the ablation of movable contact and stationary contact；Improve the breaking capacity and electric life of breaker.
Description
Technical field
The invention belongs to low voltage electrical apparatus technology fields, and in particular to a kind of contact arc extinguishing device of breaker, and also relate to
And the breaker using the contact arc extinguishing device.
Background technique
Critical elements of the low-voltage circuit breaker as low voltage electric network can when especially occurring Short-Circuit High Current in circuit
Rapid disjunction circuit, to guarantee that power grid is without damage.Low-voltage circuit breaker can generate electric arc, such as during breaking current
Fruit electric arc is burnt on dynamic/static contact for a long time without being introduced into arc-chutes, and it will cause breaking current failures；Even if electric arc
Arc-chutes can be introduced into, if dynamic/static contact cannot be left with cracking speed, still result in a large amount of of dynamic/static contact surface
Scaling loss, to influence the whole electric life of breaker.
Therefore, in the arc resistance of contact material there has been no before revolutionary breakthrough, in order to improve breaker
Electric life, it is crucial for improving the transfer velocity of electric arc, it is common practice to one is installed near contact for striking
Structure, that is, arc striking piece artificially gives one path of navigation of electric arc, so that electric arc quickly leaves dynamic/static contact and enters arc-chutes.Such as
Shown in Fig. 1, for the contact arc extinguishing device for using striking chip architecture in the prior art comprising dynamic guide rod 1, quiet guide rod 2, arc striking piece
3, arc extinguishing grid pieces group 6 is respectively fixed with the movable contact 11 and stationary contact 21 of face on the dynamic guide rod 1, quiet guide rod 2, described
Arc striking piece 3 one end 34 and stationary contact 21 be welded on static contact 2 side by side, when breaking current, move guide rod 1 drive movable contact
11 separate with stationary contact 21, and electric arc 7 is generated between movable contact 11 and stationary contact 21, and then electric arc 7 shifts under magnetic field force effect
Onto run-on tab 3, to reduce 21 ablated surface of stationary contact.In addition, arc is arranged also by dynamic guide rod end in the prior art
The scheme that contact and dynamic guide rod mistake axis are installed to realize the fast transfer of electric arc.The disconnected of striking chip architecture is used for the former
Road device, due to striking sheet material, the difference of structure type, the effect of transferred arc is also different；Guide rod mistake axis i.e. dynamic for the latter
Installation then will increase the volume of movable contact system, increases rotary inertia, is unfavorable for miniaturization and the high breaking capacity, height of breaker
Life requirements.Therefore how to design a reasonable arc-striking structure is current research hotspot.
Summary of the invention
Top priority of the invention is to provide a kind of contact arc extinguishing device of breaker, can be quickly transferred to go out by electric arc
Arc chamber is to realize that movable contact is contacted with stationary contact without arc and thick-less vane effectively subtracts compared with the existing technology for arc extinction
The ablation of few movable contact and stationary contact.
Another task of the invention is to provide the breaker using this contact arc extinguishing device, can be improved the electricity of breaker
Service life and the comprehensive embodiment for ensureing technical effect described in contact arc extinguishing device.
To complete top priority, the technical solution provided by the present invention is: a kind of contact arc extinguishing device of breaker, including
One dynamic guide rod, a quiet guide rod, a rotatable arc striking piece and an arc extinguishing grid pieces group, it is solid respectively on the dynamic guide rod and quiet guide rod
Surely there are the movable contact and stationary contact of face, the arc striking piece hub setting realizes electricity on quiet guide rod and with quiet guide rod by being flexible coupling
It connects, is respectively arranged with face and accessible the first arc ignition face and the second arc ignition face on the dynamic guide rod and arc striking piece,
In movable contact and stationary contact contact process, the second arc ignition face in the first arc ignition face and arc striking piece on the dynamic guide rod prior to
Movable contact and stationary contact point contact；In movable contact and stationary contact separation process, the first arc ignition face on the dynamic guide rod and draw
It is separated in movable contact with stationary contact after the second arc ignition face in arcs.
In a specific embodiment of the invention, the arc striking piece includes the support portion, separate close to stationary contact
The striking portion of stationary contact and the bending part for connecting support portion and striking portion, when moving contact and static contact contact, the support
Portion is not contacted with quiet guide rod.
In another specific embodiment of the invention, when the moving contact and static contact contact, the support
Portion is perpendicular to quiet guide rod.
In another specific embodiment of the invention, the support portion is electrically connected by being flexible coupling with quiet guide rod.
In another specific embodiment of the invention, reset bullet is installed between the arc striking piece and quiet guide rod
Spring, the trend that the reset spring keeps arc striking piece to rotate around its rotary centerline away from quiet guide rod direction.
Of the invention there are one in specific embodiment, the support portion side of the arc striking piece is machined with hingedly
Hole, the quiet guide rod, which corresponds to, to be opened up the slot bottom of fluted, described groove and is machined with mounting hole on the position of support portion, described
The right side cell wall of groove be limited plane, the support portion of the arc striking piece is inserted into the groove of quiet guide rod, and arc striking piece with it is quiet
Guide rod passes through hinge hole and mounting hole by pin to realize hingedly.
In a specific embodiment in turn of the invention, center line of the arc striking piece around hinge hole and mounting hole
O2 rotation realizes that hinging rotary of the arc striking piece relative to quiet guide rod, the reset spring keep arc striking piece around hinge hole and peace
The trend that the center line O2 in dress hole is rotated away from quiet guide rod direction.
In a still more specific embodiment of the invention, the confined planes of the groove and the support portion match
It closes and limits arc striking piece and make further rotation, to guarantee that arc striking piece is not contacted with arc extinguishing grid pieces group.
Of the invention again and then in a specific embodiment, the material of the arc striking piece is high permeability material.
To complete another task, the technical solution provided by the present invention is: a kind of breaker, which includes on multiple
Contact arc extinguishing device described in face.
The present invention one of has the advantage that, due to the above structure, since rotatable draw being arranged on quiet guide rod
Arcs, when movable contact and stationary contact are in closure contact condition, arc striking piece under action of reset spring power with dynamic guide rod striking
Face contact, and in movable contact and stationary contact contact process, the arc ignition face in arc ignition face and dynamic guide rod on arc striking piece prior to
Movable contact and stationary contact point contact；In movable contact and stationary contact separation process, the arc ignition face on arc striking piece and drawing on dynamic guide rod
It is separated in movable contact with stationary contact after cambered surface, realization movable contact is contacted with stationary contact without arc and thick-less vane, relative to traditional
Contact arc extinguishing device reduces the ablation of movable contact and stationary contact；The two of advantage, the breaker with above-mentioned contact arc extinguishing device is used
When breaking current, since above-mentioned movable contact is contacted with stationary contact without arc and thick-less vane, be conducive to point for improving breaker
Cutting capacity and electric life.
Detailed description of the invention
Fig. 1 is the example structure schematic diagram of the contact arc extinguishing device of breaker described in the prior art.
Structural schematic diagram when Fig. 2 a is the dynamic and static contact of the contact arc extinguishing device of breaker of the present invention.
Fig. 2 b be when the dynamic and static contact of contact arc extinguishing device of breaker of the present invention just separates and the first arc ignition face and
Structural schematic diagram when second arc ignition face still contacts.
Fig. 2 c be when the dynamic and static contact of contact arc extinguishing device of breaker of the present invention just separates and the first arc ignition face and
The separation of second arc ignition face generates structural schematic diagram when electric arc.
Fig. 2 d is structural schematic diagram when the dynamic guide rod of breaker of the present invention is opened to maximum position.
Fig. 2 e is the first arc ignition face during the dynamic and static contact of the contact arc extinguishing device of breaker of the present invention
Just contacted with the second arc ignition face and dynamic and static contact not in contact with when structural schematic diagram.
Fig. 3 is the quiet guide rod of the contact arc extinguishing device of breaker of the present invention and the scheme of installation of arc striking piece.
In figure: 1. dynamic guide rods, 11. movable contacts, 12. first arc ignition faces；2. quiet guide rod, 21. stationary contacts, 22. grooves, 221.
Mounting hole, 222. confined planes；3. arc striking piece, 31. support portions, 311. hinge holes, 32. striking portions, 33. bending parts, 331. second
Arc ignition face, 34. one end；4. being flexible coupling；5. reset spring；6. arc extinguishing grid pieces group；7. electric arc.
Specific embodiment
Detailed description of specific embodiments of the present invention with reference to the accompanying drawing, but applicant is not to the description of embodiment
Limitation to technical solution, any design according to the present invention, which changes in the form rather than substance, all should be considered as protection of the invention
Range.
The concept of all directionality for being related to upper, lower, left, right, front and rear or directionality is all in the following description
On the basis of the position shown in Fig. 2 a, thus it cannot be understood as being particularly limited to technical solution provided by the invention.
It please refers to Fig. 2 a~Fig. 2 d and combines Fig. 3, the present invention relates to a kind of contact arc extinguishing devices of breaker, including move and lead
Bar 1, quiet guide rod 2, arc striking piece 3, be flexible coupling 4, reset spring 5 and arc extinguishing grid pieces group 6, divides on the dynamic guide rod 1 and quiet guide rod 2
It is not fixed with the movable contact 11 and stationary contact 21 of face, the arc striking piece 3 can be used high permeability material, in the present embodiment preferably
High permeability material be iron.The arc striking piece 3 is articulated on quiet guide rod 2, is consisted of three parts, is proximate to stationary contact respectively
21 support portion 31, the bending part 33 in striking portion 32, connection support portion 31 and striking portion 32 far from stationary contact 21.Described draws
Arcs 3 are electrically connected with quiet guide rod 2 by 4 realizations that are flexible coupling, specifically, the support portion 31 passes through 4 and the quiet guide rod 2 of being flexible coupling
Electrical connection.31 side of support portion of the arc striking piece 3 is machined with hinge hole 311.The corresponding support portion 31 of the quiet guide rod 2
Fluted 22 are opened up on position, the slot bottom of the groove 22 is machined with mounting hole 221, and the right side cell wall of the groove 22 is
Confined planes 222.The arc striking piece 3 is inserted into the groove 22 of quiet guide rod 2, and arc striking piece 3 and quiet guide rod 2 are passed through hingedly by pin
Hole 311 and mounting hole 221 are realized hingedly, realize arc striking piece 3 around the center line of hinge hole 311 and mounting hole 221 relative to quiet
Guide rod 2 rotates, and the center line of hinge hole 311 and mounting hole 221 is set as O2 here, i.e. arc striking piece 3 is rotated around center line O2.Quiet
When contact 21 and movable contact 11 contact, the support portion 31 is not contacted with quiet guide rod 2, as shown in Figure 2 a, the support portion
Spacing distance d between 31 and quiet guide rod 2, preferably support portion 31 is perpendicular to quiet guide rod 2 in the present embodiment, while described dynamic leading
Face is respectively arranged on bar 1 and bending part 33 and accessible the first arc ignition face 12 and the second arc ignition face 331.It is described dynamic to lead
Bar 1 moves guide rod 1 and rotates around center line O1 during movable contact 11 leaves stationary contact 21.The arc striking piece 3 is led with quiet
Reset spring 5 is installed, the reset spring 5 keeps arc striking piece 3 to become around what center line O2 was rotated counterclockwise between bar 2
The trend that gesture, the i.e. reset spring 5 keep arc striking piece 3 to rotate around its rotary centerline away from quiet 2 direction of guide rod.
The effect of the confined planes 222 of the groove 22 is to limit arc striking piece 3 by the cooperation with the support portion 31 further to revolve
Turn, to guarantee that arc striking piece 3 is not contacted with arc extinguishing grid pieces group 6.
Please continue to refer to Fig. 2 a~Fig. 2 d, the specific arc extinguishing process of the contact arc extinguishing device of the breaker is as follows:
As shown in Figure 2 a, the dynamic guide rod 1 is in the close position, i.e., the movable contact 11 on dynamic guide rod 1 with it is quiet on quiet guide rod 2
Contact 21 contacts, second arc ignition face 331 and dynamic guide rod 1 of the arc striking piece 3 under the action of 5 spring force of reset spring thereon
The contact of the first arc ignition face 12, at this point, striking portion 32 on the arc striking piece 3 and quiet 2 angle of guide rod are θ 2.
As shown in Figure 2 b, the dynamic guide rod 1 is rotated counterclockwise around center line O1 open up contact during, it is described
Movable contact 11 and stationary contact 21 disconnect after, move guide rod 1 the first arc ignition face 12 still with the bending part 33 on arc striking piece 3 second
Arc ignition face 331 contacts, and when dynamic guide rod 1 continues up opening, the arc striking piece 3 is under the action of 5 spring force of reset spring
It is rotated counterclockwise around center line O2, so that striking portion 32 and the angle of quiet guide rod 2 are gradually increased.
As shown in Figure 2 c, the dynamic guide rod 1 continues around center line O1 and rotates counterclockwise, until the first of dynamic guide rod 1 draws
After cambered surface 12 is separated with the second arc ignition face 331 on arc striking piece 3, the support portion 31 on the arc striking piece 3 is in 5 bullet of reset spring
It is rotated counterclockwise under the action of spring force around center line O2, until support portion 31 is contacted with confined planes 222, at this point, the striking
Striking portion 32 and quiet 2 angle of guide rod on piece 3 become θ 1, and generate between the first arc ignition face 12 and arc striking piece 3 of dynamic guide rod 1
Electric arc 7.
As shown in Figure 2 d, the dynamic guide rod 1 continues around i.e. dynamic guide rod 1 when center line O1 is rotated counterclockwise to maximum position
When opening to maximum position, the electric arc 7 generated between the first arc ignition face 12 and arc striking piece 3 of the dynamic guide rod 1 is elongated, and
And electric arc 7 is entered arc-chutes by electrodynamic action and cut by arc extinguishing grid pieces group 6, to extinguish electric arc 7, realizes point of breaker
It is disconnected, while avoiding the burning on movable contact 11, stationary contact 12 of electric arc 7.
As shown in Figure 2 e, when movable contact 11 and stationary contact 12 contact again, the dynamic guide rod 1 is around center line O1 up time
Needle rotation, before movable contact 11 is contacted with stationary contact 21, the first arc ignition face 12 on dynamic guide rod 1 with the folding on arc striking piece 3
Second arc ignition face 331 of turn of bilge 33 contacts, and the dynamic guide rod 1 continues around center line O1 and rotates clockwise, until movable contact
11 contact with stationary contact 21, realize the connection of breaker.
In conclusion when dynamic guide rod 1 rotates clockwise the striking namely in movable contact 11 and 21 contact process of stationary contact
The second arc ignition face 331 on piece 3 is contacted prior to movable contact 11 with stationary contact 21 with the first arc ignition face 12 on dynamic guide rod 1；Dynamic
In contact 11 and 21 separation process of stationary contact, the second arc ignition face 331 on the arc striking piece 3 is drawn with first on dynamic guide rod 1
It is separated in movable contact 11 with stationary contact 21 after cambered surface 12.Contact arc extinguishing device of the present invention realizes movable contact 11 and stationary contact
Point 21 is contacted without arc and thick-less vane, to reduce the ablation of movable contact 11 Yu stationary contact 21, is conducive to the electricity for improving breaker
Service life.
Claims (10)
1. a kind of contact arc extinguishing device of breaker, including a dynamic guide rod (1), a quiet guide rod (2), a rotatable arc striking piece
(3) and an arc extinguishing grid pieces group (6), be respectively fixed on the dynamic guide rod (1) and quiet guide rod (2) face movable contact (11) and
Stationary contact (21), it is characterised in that: arc striking piece (3) hub setting is on quiet guide rod (2) and with quiet guide rod (2) by being flexible coupling
(4) it realizes electrical connection, is respectively arranged with face and the first accessible arc ignition face on the dynamic guide rod (1) and arc striking piece (3)
(12) and the second arc ignition face (331), in movable contact (11) and stationary contact (21) contact process, on the dynamic guide rod (1)
The second arc ignition face (331) in first arc ignition face (12) and arc striking piece (3) is contacted prior to movable contact (11) with stationary contact (21)；?
In movable contact (11) and stationary contact (21) separation process, the first arc ignition face (12) and arc striking piece (3) on the dynamic guide rod (1)
On the second arc ignition face (331) after separated in movable contact (11) with stationary contact (21).
2. a kind of contact arc extinguishing device of breaker according to claim 1, it is characterised in that arc striking piece (3) packet
Include the support portion (31) close to stationary contact (21), the striking portion (32) far from stationary contact (21) and connection support portion (31) and striking
The bending part (33) in portion (32), when moving contact (11) and static contact (21) contact, the support portion (31) and quiet guide rod (2)
It does not contact.
3. a kind of contact arc extinguishing device of breaker according to claim 2, it is characterised in that the moving contact (11)
When with static contact (21) contact, the support portion (31) is perpendicular to quiet guide rod (2).
4. a kind of contact arc extinguishing device of breaker according to claim 2, it is characterised in that the support portion (31)
It is electrically connected by being flexible coupling (4) with quiet guide rod (2).
5. a kind of contact arc extinguishing device of breaker according to claim 1, it is characterised in that the arc striking piece (3) with
It is equipped with reset spring (5) between quiet guide rod (2), the reset spring (5) keeps arc striking piece (3) around its rotary centerline
Away from the trend of quiet guide rod (2) direction rotation.
6. a kind of contact arc extinguishing device of breaker according to claim 2, it is characterised in that the arc striking piece (3)
Support portion (31) side is machined with hinge hole (311), is offered on the position of the quiet guide rod (2) corresponding support portion (31) recessed
Slot (22), the slot bottom of the groove (22) are machined with mounting hole (221), and the right side cell wall of the groove (22) is limited plane
(222), the support portion (31) of the arc striking piece (3) is inserted into the groove (22) of quiet guide rod (2), and arc striking piece (3) is led with quiet
Bar (2) passes through hinge hole (311) and mounting hole (221) by pin to realize hingedly.
7. a kind of contact arc extinguishing device of breaker according to claim 5 or 6, it is characterised in that the arc striking piece
(3) rotating around the center line O2 of hinge hole (311) and mounting hole (221) realizes arc striking piece (3) relative to the hinged of quiet guide rod (2)
Rotation, the reset spring (5) keep arc striking piece (3) around the center line O2 of hinge hole (311) and mounting hole (221) towards
Trend far from the rotation of quiet guide rod (2) direction.
8. a kind of contact arc extinguishing device of breaker according to claim 6, it is characterised in that the groove (22)
Confined planes (222) match with the support portion (31) and limit arc striking piece (3) and make further rotation, to guarantee arc striking piece
(3) it is not contacted with arc extinguishing grid pieces group (6).
9. a kind of contact arc extinguishing device of breaker according to claim 1, it is characterised in that the arc striking piece (3)
Material is high permeability material.
10. a kind of breaker, it is characterised in that: filled including contact arc-extinguishing described in any one of multiple the claims 1~9
It sets.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910019026.3A CN109509691B (en) | 2019-01-09 | 2019-01-09 | Contact arc extinguishing device of circuit breaker and circuit breaker thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910019026.3A CN109509691B (en) | 2019-01-09 | 2019-01-09 | Contact arc extinguishing device of circuit breaker and circuit breaker thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109509691A true CN109509691A (en) | 2019-03-22 |
| CN109509691B CN109509691B (en) | 2024-09-24 |
Family
ID=65756535
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910019026.3A Active CN109509691B (en) | 2019-01-09 | 2019-01-09 | Contact arc extinguishing device of circuit breaker and circuit breaker thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109509691B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111341615A (en) * | 2020-03-26 | 2020-06-26 | 贵州泰永长征技术股份有限公司 | Special floating static contact assembly device structure |
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| KR20020032925A (en) * | 2000-10-28 | 2002-05-04 | 이종수 | Are extinguishing device in circuit breaker |
| CN101051579A (en) * | 2007-05-10 | 2007-10-10 | 正泰集团股份有限公司 | Low voltage circuit breaker with quick ectuating function |
| CN101236865A (en) * | 2008-02-26 | 2008-08-06 | 常熟开关制造有限公司(原常熟开关厂） | Contactor system for low-voltage breaker |
| CN102427009A (en) * | 2011-11-10 | 2012-04-25 | 江苏辉能电气有限公司 | Arc blowing device for low-voltage circuit breaker |
| CN207664013U (en) * | 2017-12-11 | 2018-07-27 | 上海电科电器科技有限公司 | Breaker of plastic casing |
| CN209199865U (en) * | 2019-01-09 | 2019-08-02 | 常熟开关制造有限公司(原常熟开关厂） | A kind of contact arc extinguishing device and its breaker of breaker |
-
2019
- 2019-01-09 CN CN201910019026.3A patent/CN109509691B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020032925A (en) * | 2000-10-28 | 2002-05-04 | 이종수 | Are extinguishing device in circuit breaker |
| CN101051579A (en) * | 2007-05-10 | 2007-10-10 | 正泰集团股份有限公司 | Low voltage circuit breaker with quick ectuating function |
| CN101236865A (en) * | 2008-02-26 | 2008-08-06 | 常熟开关制造有限公司(原常熟开关厂） | Contactor system for low-voltage breaker |
| CN102427009A (en) * | 2011-11-10 | 2012-04-25 | 江苏辉能电气有限公司 | Arc blowing device for low-voltage circuit breaker |
| CN207664013U (en) * | 2017-12-11 | 2018-07-27 | 上海电科电器科技有限公司 | Breaker of plastic casing |
| CN209199865U (en) * | 2019-01-09 | 2019-08-02 | 常熟开关制造有限公司(原常熟开关厂） | A kind of contact arc extinguishing device and its breaker of breaker |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111341615A (en) * | 2020-03-26 | 2020-06-26 | 贵州泰永长征技术股份有限公司 | Special floating static contact assembly device structure |
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| Publication number | Publication date |
|---|---|
| CN109509691B (en) | 2024-09-24 |
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