CN214411106U - Arc extinguishing system of circuit breaker - Google Patents
Arc extinguishing system of circuit breaker Download PDFInfo
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- CN214411106U CN214411106U CN202120942457.XU CN202120942457U CN214411106U CN 214411106 U CN214411106 U CN 214411106U CN 202120942457 U CN202120942457 U CN 202120942457U CN 214411106 U CN214411106 U CN 214411106U
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- arc extinguishing
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Abstract
The utility model discloses a circuit breaker arc extinguishing system, which comprises a contact structure and an arc extinguishing device which are arranged in a circuit breaker shell, wherein the arc extinguishing device comprises two arc extinguishing chambers which are oppositely arranged at two ends of a movable contact bridge, and an arc striking sleeve structure which is detachably connected between the open ends of the two arc extinguishing chambers, the arc striking sleeve structure is provided with an arc extinguishing channel which extends and communicates the open ends of the two arc extinguishing chambers, the movable contact bridge is movably arranged in the arc extinguishing channel and drives two movable contacts and two static contacts to be contacted or separated in the arc extinguishing channel, by adopting the technical scheme, electric arcs generated by the two movable contacts and the static contacts can quickly and accurately flow into the two arc extinguishing chambers through the arc extinguishing channel, the arc striking distance is shortened, so as to limit the electric arcs to diffuse to two sides of the arc striking sleeve structure and ignite the shell and internal components, the arc extinguishing advantages of the two arc extinguishing chambers are utilized to simultaneously, and the arc extinguishing efficiency is high, arc extinguishing performance and breaking capacity of the circuit breaker are greatly improved.
Description
Technical Field
The utility model relates to a low-voltage apparatus technical field, concretely relates to circuit breaker arc extinguishing system.
Background
The miniature circuit breaker generally comprises electromagnetic mechanism, contact mechanism, overload dropout subassembly and arc extinguishing system, and the arc extinguishing system is the important component part of circuit breaker, and its effect is to extinguish the electric arc that produces on the contact system, and its clearance is very little when the moving contact of circuit breaker, static contact separation, and electric field intensity is very big, easily produces high fever and intense field, and the free electron in the metal escapes from the cathode surface, rushes to the positive pole, consequently, just produces a large amount of charged particles in the clearance of moving contact and static contact, makes gaseous electrically conductive formation red hot electric arc.
The arc extinguishing system of the existing miniature circuit breaker mainly comprises a shell, a moving contact, a fixed contact, an arc extinguishing chamber and an arc striking plate, wherein the moving contact, the fixed contact, the arc extinguishing chamber and the arc striking plate are arranged in the shell, the moving contact and the fixed contact are in rotary type clapping contact, on the structural layout of the circuit breaker, the arc extinguishing chamber is arranged below the contact position of the moving contact and the fixed contact, the arc extinguishing chamber is arranged in an installation interval specially arranged in the shell, an arc extinguishing channel is arranged between the arc extinguishing chamber and the moving contact and between the arc extinguishing chamber and the fixed contact, and the arc striking plate is arranged in the arc extinguishing channel to play an arc striking role. However, the arc extinguishing channel of the existing circuit breaker arc extinguishing system is long in distance and is directly arranged on the inner wall of the shell, the movement of electric arcs is irregular and disorderly, and the shell and internal components are easily burnt and damaged, the arc striking and extinguishing capabilities of the arc extinguishing chamber are general, and the arc extinguishing range is limited, so that the arc extinguishing capability and the breaking capability of the circuit breaker are influenced.
SUMMERY OF THE UTILITY MODEL
Therefore, the to-be-solved technical problem of the utility model lies in overcoming the striking and the arc extinguishing ability of the circuit breaker explosion chamber among the prior art generally, and electric arc causes the firing injury to casing and internals easily to influence the problem of circuit breaker arc extinguishing ability and breaking capacity, thereby one kind avoids electric arc to cause the firing injury to casing and internals, and arc extinguishing and striking are efficient, promote the arc extinguishing performance of circuit breaker and the circuit breaker arc extinguishing system of breaking capacity by a wide margin.
In order to solve the technical problem, the utility model provides a circuit breaker arc extinguishing system, which comprises a contact structure and an arc extinguishing device which are arranged in a circuit breaker shell;
the contact structure comprises two fixed contacts fixedly arranged on a shell of the circuit breaker, a movable contact bridge movably arranged relative to the two fixed contacts, and two movable contacts arranged at two ends of the movable contact bridge and vertically opposite to the two fixed contacts;
the arc extinguishing device comprises two arc extinguishing chambers which are arranged at two ends of the movable contact bridge relatively, and an arc striking sleeve structure which is detachably connected between the two open ends of the arc extinguishing chambers, wherein the arc striking sleeve structure is provided with arc extinguishing channels which extend and communicate the two open ends of the arc extinguishing chambers, two static contacts stretch into the arc extinguishing channels, the movable contact bridge moves and is arranged in the arc extinguishing channels, and the movable contact bridge drives the two static contacts to be in contact with or separated from the arc extinguishing channels.
The arc striking sleeve structure comprises two arc extinguishing baffles connected with the side walls of the two sides of the arc extinguishing chamber, and an arc extinguishing channel suitable for containing a movable contact bridge and a fixed contact is formed between the two arc extinguishing baffles.
The arc extinguishing system of the circuit breaker is characterized in that a plurality of arc striking convex strips arranged along the extending direction of the arc extinguishing channel and arc striking grooves formed between the arc striking convex strips are arranged on the inner side surfaces of the arc extinguishing baffle plates.
In the arc extinguishing system of the circuit breaker, the arc extinguishing channel is provided with two arc striking intervals corresponding to the two groups of moving and static contacts respectively, and the two arc striking intervals are arranged opposite to the open ends of the two arc extinguishing chambers respectively.
The arc extinguishing system of the circuit breaker is characterized in that two installation clamping grooves are respectively formed in the outer side faces of the arc extinguishing baffles corresponding to the two arc striking intervals, and magnetic conductive sheets are arranged in the installation clamping grooves.
Foretell circuit breaker arc extinguishing system, the explosion chamber includes a plurality of arc extinguishing bars piece of interval arrangement, arc extinguishing passageway both ends are equipped with a plurality of slot structures of pegging graft with a plurality of arc extinguishing bars piece cooperation respectively, striking cover structure and two the explosion chamber passes through slot structure and constitutes an organic whole structure with the grafting cooperation of arc extinguishing bars piece.
In the arc extinguishing system of the circuit breaker, the arc striking grooves extend and are correspondingly connected with the slot structures.
According to the circuit breaker arc extinguishing system, the two fixed contacts are respectively arranged on the two fixed contact plates, and the two fixed contact plates are correspondingly covered on the top of the arc extinguishing channel.
The arc guide plate is arranged at the bottom of the arc extinguishing channel and extends towards the opening end of the arc extinguishing chamber.
The arc extinguishing system of the circuit breaker comprises a contact frame movably arranged in an arc striking sleeve structure in a penetrating mode, a movable contact bridge is movably arranged on the contact frame, an installation guide hole is formed in the middle of the arc striking sleeve structure, the contact frame is provided with an installation guide rod moving to penetrate through the installation guide hole, and a contact pressure spring which penetrates through the installation guide hole and abuts against the rear portion of the installation guide hole is arranged between the movable contact bridge and an arc guide plate on the installation guide rod in a sleeved mode.
The technical scheme of the utility model compare and have following advantage in prior art:
1. the utility model provides an among the circuit breaker arc extinguishing system, adopt the double-breakpoint structure of reciprocating contact according to the contact structure, be favorable to increaseing the opening distance, shorten arc extinguishing time, through set up two relative explosion chambers at movable contact bridge both ends, and be connected with striking cover structure between the open end of two explosion chambers, striking cover structure has the arc extinguishing passageway that extends the open end that leads to two explosion chambers directly, play accurate striking and arc extinguishing effects, movable contact bridge drives two moving contacts and two static contacts and is contact or separate in the arc extinguishing passageway, the benefit of design like this lies in, make the electric arc that two sets of moves, the static contact produced can flow into two explosion chambers directly fast accurately through the arc extinguishing passageway, shorten the striking distance, to restrict electric arc to striking cover structure both sides diffusion and firing casing and inner member, the protecting effect is good, the striking scope is big and efficient, and set up two explosion chambers and can increase the arc extinguishing scope, utilize two explosion chambers to carry out the advantage of arc extinguishing work simultaneously, the arc extinguishing ability is showing and is improving, and the arc extinguishing efficiency is high, promotes the arc extinguishing performance and the breaking capacity of circuit breaker by a wide margin.
2. The utility model provides an among the circuit breaker arc extinguishing system, set up many arc striking grooves through the medial surface at two arc extinguishing baffles, many arc striking grooves are along arc extinguishing passageway extending direction syntropy setting, and this kind of structure sets up, plays the effect of striking through a plurality of arc striking grooves, shortens the striking distance, and guide electric arc that can be accurate flows into two explosion chambers, still plays the cutting electric arc effect simultaneously, reduces the voltage of electric arc.
3. The utility model provides an among the circuit breaker arc extinguishing system, the lateral surface of two arc extinguishing baffles corresponds two sets of movements, the static contact is provided with two magnetic conductive pieces respectively, the benefit of this kind of design lies in, utilizes the arc blowing effect to play quick accurate striking effect, makes two sets of electric arcs that move, the static contact produces move to the explosion chamber direction motion of both sides respectively, is favorable to reducing the resistance that electric arc got into two explosion chambers, and then improves the arc extinguishing effect of whole circuit breaker to improve the breaking capacity and the life of circuit breaker by a wide margin.
4. The utility model provides an among the circuit breaker arc extinguishing system, striking cover structure and two the explosion chamber passes through slot structure and constitutes a body structure with the grafting cooperation of arc extinguishing bars piece, and the installation is dismantled conveniently, realizes the integral type installation of explosion chamber and striking cover structure, improves the installation effectiveness.
5. The utility model provides an among the circuit breaker arc extinguishing system, hold in the arc extinguishing passageway of striking cover structure according to movable contact bridge and static contact, through sheltering from the top and the bottom that set up at the arc extinguishing passageway respectively with two static touch panels and arc guide, can play the striking effect, enclose into the closed passage of a direct two inside explosion chambers with the arc extinguishing passageway again simultaneously, guide electric arc flows along the explosion chamber direction at arc extinguishing passageway to its both ends, and restrict electric arc to striking cover structure outdiffusion, in order to avoid electric arc to cause the firing injury to circuit breaker inner member, use safe and reliable
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a circuit breaker arc extinguishing system provided by the present invention;
fig. 2 is a schematic diagram of the internal structure of the arc extinguishing system of the circuit breaker of the present invention;
fig. 3 is a schematic view of a split structure of the arc extinguishing system of the circuit breaker of the present invention;
fig. 4 is a schematic structural view of the arc striking sleeve structure of the present invention;
reference numerals: 1. an arc extinguishing chamber; 11. arc extinguishing grid pieces; 2. an arc striking sleeve structure; 21. an arc extinguishing baffle; 22. an arc striking bulge; 23. installing a clamping groove; 24. a slot structure; 3. an arc extinguishing channel; 31. an arc striking interval; 4. a magnetic conductive sheet; 5. a movable contact bridge; 51. a moving contact; 6. a stationary contact plate; 61. static contact; 7. an arc guide plate; 8. a contact head frame; 81. installing a guide rod; 82. a contact pressure spring; 9. a circuit breaker housing.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "first", "second" and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.
Example 1
The present embodiment is described in detail below with reference to the accompanying drawings:
the utility model provides a circuit breaker arc extinguishing system as shown in fig. 1-4, which comprises a contact structure and an arc extinguishing device which are arranged in a circuit breaker shell 9, wherein the contact structure comprises two static contacts 61 which are fixedly arranged in the circuit breaker shell 9, a movable contact bridge 5 which is movably arranged relative to the two static contacts 61, and two movable contacts 51 which are arranged at two ends of the movable contact bridge 5 and are vertically opposite to the two static contacts 61;
the arc extinguishing device comprises two arc extinguishing chambers 1 which are oppositely arranged at two ends of a movable contact bridge 5 and an arc striking sleeve structure 2 which is detachably connected between the open ends of the arc extinguishing chambers 1, wherein the arc striking sleeve structure 2 is provided with two arc extinguishing channels 3 which are communicated with the open ends of the arc extinguishing chambers 1 in an extending manner, two static contacts 61 stretch into the arc extinguishing channels 3, the movable contact bridge 5 is movably arranged in the arc extinguishing channels 3 and drives two movable contacts 51 and the two static contacts 61 to be in contact with or separated from each other in the arc extinguishing channels 3.
The above embodiment is the core technical scheme of this embodiment, a double-breakpoint structure moving up and down to contact is adopted according to a contact structure, which is beneficial to increasing the opening distance and shortening the arc extinguishing time, by arranging two opposite arc extinguishing chambers 1 at two ends of a movable contact bridge 5, and connecting an arc striking sleeve structure 2 between the open ends of the two arc extinguishing chambers 1, the arc striking sleeve structure 2 has an arc extinguishing channel 3 extending to directly reach the open ends of the two arc extinguishing chambers 1, so as to play a role in accurate arc striking and arc extinguishing, the movable contact bridge 5 drives two movable contacts 51 and two static contacts 61 to contact or separate in the arc extinguishing channel 3, so that the design has the advantages that the electric arcs generated by the two groups of movable and static contacts 61 can directly, quickly and accurately flow into the two arc extinguishing chambers 1 through the arc extinguishing channel 3, the arc striking distance is shortened, and the high-voltage area on one side of the electric arc driven contact 51 is guided to flow to the low-voltage area on one side of the arc extinguishing chamber 1, with restriction electric arc to 2 both sides diffusion of striking cover structure and firing casing and interior component, the protecting effect is good, the striking scope is big and efficient to and set up two explosion chambers 1 and can increase the arc extinguishing scope, utilize two explosion chambers 1 to carry out the advantage of arc extinguishing work simultaneously, the arc extinguishing ability is showing and is improving, and the arc extinguishing performance and the breaking capacity of circuit breaker are promoted by a wide margin to arc extinguishing efficiency height.
The specific structure of the arc striking sleeve structure 2 is described in detail below with reference to fig. 2-4:
the arc striking sleeve structure 2 comprises two arc extinguishing baffles 21 connected with the side walls of two sides of the two arc extinguishing chambers 1, an arc extinguishing channel 3 suitable for accommodating a moving contact bridge 5 and two static contacts 61 is formed between the two arc extinguishing baffles 21, wherein the two static contacts 61 are respectively arranged on the two static contact plates 6, the two static contact plates 6 are correspondingly covered on the top of the arc extinguishing channel 3, the two static contacts 61 extend into the arc extinguishing channel 3, the two static contact plates 6 respectively extend towards the two arc extinguishing chambers 1, so that the electric arc remained on the static contacts 61 can enter the arc extinguishing chambers 1 along the static contact plates 6, further preferably, the arc extinguishing channel 3 is provided with an arc guide plate 7 at the bottom, the arc guide plate 7 extends towards the opening ends of the two arc extinguishing chambers 1, and according to the structure, the two static contact plates 6 and the arc guide plate 7 are respectively arranged at the top and the bottom of the arc extinguishing channel 3 in a shielding manner, can play the effect of striking, enclose arc extinguishing passageway 3 into a closed passage who leads directly two explosion chambers 1 inside simultaneously again to guide electric arc to flow along arc extinguishing passageway 3 to the explosion chamber 1 direction at its both ends, and restrict electric arc to striking cover structure 2 outdiffusion, in order to avoid electric arc to cause the firing injury to circuit breaker inner member, use safe and reliable.
As shown in fig. 4, two the medial surface of arc extinguishing baffle 21 is equipped with a plurality of striking sand grips that set up along arc extinguishing channel 3 extending direction, and many arc striking grooves of shaping between a plurality of striking sand grips, many arc striking grooves are along arc extinguishing channel 3 extending direction syntropy setting, this kind of structure setting, play the effect of striking through a plurality of arc striking grooves, shorten the striking distance, guide electric arc that can be accurate flows into two explosion chambers 1, still play the cutting electric arc effect simultaneously, reduce the voltage of electric arc.
As a preferred embodiment, the arc extinguishing channel 3 is provided with two arc striking sections 31 corresponding to two sets of moving and static contacts 61, the two arc striking sections 31 are respectively disposed opposite to the open ends of the two arc extinguishing chambers 1, the outer side surfaces of the two arc extinguishing baffles 21 are provided with two mounting slots 23 corresponding to the two arc striking sections 31, and the mounting slots 23 are provided with magnetic conductive plates 4. The design has the advantages that the arc striking effect is achieved quickly and accurately by utilizing the arc blowing effect, electric arcs generated by the two groups of moving and static contacts 61 move towards the arc extinguishing chambers 1 on the two sides respectively, resistance of the electric arcs entering the two arc extinguishing chambers 1 is reduced, the arc extinguishing effect of the whole circuit breaker is improved, and therefore the breaking capacity and the service life of the circuit breaker are greatly improved.
In order to realize the rapid installation between the arc striking sleeve structure 2 and the two arc extinguishing chambers 1, as shown in fig. 3-4, the arc extinguishing chambers 1 include a plurality of arc extinguishing grid pieces 11 arranged at intervals, a plurality of slot structures 24 inserted with the arc extinguishing grid pieces 11 are respectively arranged at two ends of the arc extinguishing channel 3, a plurality of arc striking grooves extend to be correspondingly connected with the slot structures 24, when in assembly, one end of the arc striking sleeve structure 2 is inserted into the open end of one arc extinguishing chamber 1, and the other end of the arc striking sleeve structure is inserted into the open end of the other arc extinguishing chamber 1, so that the arc striking sleeve structure 2 and the two arc extinguishing chambers 1 form an integrated structure through the insertion and connection of the slot structures 24 and the arc extinguishing grid pieces 11, thereby facilitating the installation and disassembly between the arc striking sleeve structure 2 and the two arc extinguishing chambers 1, realizing the integrated installation of the arc extinguishing chambers 1 and the arc striking sleeve structure 2, the installation efficiency is improved.
As shown in fig. 3, the contact structure includes a contact frame 8 movably disposed in the arc striking sleeve structure 2, the movable contact bridge 5 is movably disposed on the contact frame 8, an installation guide hole is disposed in the middle of the arc striking sleeve structure 2, the contact frame 8 has an installation guide rod 81 movably passing through the installation guide hole, a contact pressure spring 82 passing through the installation guide hole and abutting between the movable contact bridge 5 and the arc guide plate 7 is sleeved on the installation guide rod 81, and the contact pressure spring 82 applies an elastic force to the movable contact bridge 5 and the contact frame 8 to move in the direction of the stationary contact 61.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications can be made without departing from the scope of the invention.
Claims (10)
1. The utility model provides a circuit breaker arc extinguishing system, is including setting up contact structure and arc extinguishing device in circuit breaker casing (9), its characterized in that:
the contact structure comprises two fixed contacts (61) fixedly arranged on a breaker shell (9), a movable contact bridge (5) movably arranged relative to the two fixed contacts (61), and two movable contacts (51) arranged at two ends of the movable contact bridge (5) and vertically opposite to the two fixed contacts (61);
arc control device is including setting up relatively two explosion chambers (1) at movablely touch bridge (5) both ends to and can dismantle the connection and be two striking cover structure (2) between the open end of explosion chamber (1), striking cover structure (2) have extend the intercommunication two arc extinguishing passageway (3) of the open end of explosion chamber (1), two static contacts (61) stretch into in arc extinguishing passageway (3), movablely touch bridge (5) move set up in arc extinguishing passageway (3), and drive two moving contact (51) are in with two static contacts (61) contact or separation in arc extinguishing passageway (3).
2. The circuit breaker arc extinguishing system of claim 1, wherein: the arc striking sleeve structure (2) comprises two arc extinguishing baffles (21) connected with the side walls of two sides of the two arc extinguishing chambers (1), and an arc extinguishing channel (3) suitable for containing a movable contact bridge (5) and a static contact (61) is formed between the two arc extinguishing baffles (21).
3. The circuit breaker arc extinguishing system of claim 2, wherein: the inner side surfaces of the two arc extinguishing baffles (21) are provided with a plurality of arc striking convex strips arranged along the extending direction of the arc extinguishing channel (3) and arc striking grooves formed between the arc striking convex strips.
4. The circuit breaker arc extinguishing system of claim 3, wherein: the arc extinguishing channel (3) is provided with two arc striking intervals (31) corresponding to the two groups of moving and static contacts (61), and the two arc striking intervals (31) are arranged opposite to the open ends of the two arc extinguishing chambers (1).
5. The circuit breaker arc extinguishing system of claim 4, wherein: two installing clamping grooves (23) are respectively formed in the outer side faces of the two arc extinguishing baffles (21) corresponding to the two arc striking intervals (31), and magnetic conductive sheets (4) are arranged in the installing clamping grooves (23).
6. A circuit breaker arc extinguishing system according to any of claims 3-5, characterized in that: arc extinguishing chamber (1) is including a plurality of arc extinguishing bars piece (11) of interval arrangement, arc extinguishing passageway (3) both ends are equipped with respectively and cooperate a plurality of slot structure (24) of pegging graft with a plurality of arc extinguishing bars piece (11), striking cover structure (2) and two arc extinguishing chamber (1) forms an organic whole structure through slot structure (24) and the grafting cooperation of arc extinguishing bars piece (11).
7. The circuit breaker arc extinguishing system of claim 6, wherein: the arc ignition grooves extend to be correspondingly connected with the slot structures (24).
8. The circuit breaker arc extinguishing system of claim 1, wherein: the two static contacts (61) are respectively arranged on the two static contact plates (6), and the two static contact plates (6) are correspondingly covered on the top of the arc extinguishing channel (3).
9. The circuit breaker arc quenching system of claim 8, wherein: arc extinguishing channel (3) bottom is provided with leads arc board (7), lead arc board (7) to two the open end direction of explosion chamber (1) extends the setting.
10. A circuit breaker arc extinguishing system according to any one of claims 7-9, wherein: the contact structure comprises a contact frame (8) movably arranged in an arc striking sleeve structure (2) in a penetrating mode, a movable contact bridge (5) is movably arranged on the contact frame (8), an installation guide hole is formed in the middle of the arc striking sleeve structure (2), the contact frame (8) is provided with an installation guide rod (81) movably penetrating through the installation guide hole, and a contact pressure spring (82) which penetrates through the installation guide hole and abuts against the movable contact bridge (5) and the arc guide plate (7) is sleeved on the installation guide rod (81).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120942457.XU CN214411106U (en) | 2021-04-30 | 2021-04-30 | Arc extinguishing system of circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120942457.XU CN214411106U (en) | 2021-04-30 | 2021-04-30 | Arc extinguishing system of circuit breaker |
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| CN214411106U true CN214411106U (en) | 2021-10-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202120942457.XU Active CN214411106U (en) | 2021-04-30 | 2021-04-30 | Arc extinguishing system of circuit breaker |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115360034A (en) * | 2022-07-26 | 2022-11-18 | 嘉润电气科技有限公司 | Arc extinguish chamber |
| WO2024007845A1 (en) * | 2022-07-04 | 2024-01-11 | 上海正泰智能科技有限公司 | Arc extinguishing mechanism |
-
2021
- 2021-04-30 CN CN202120942457.XU patent/CN214411106U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024007845A1 (en) * | 2022-07-04 | 2024-01-11 | 上海正泰智能科技有限公司 | Arc extinguishing mechanism |
| CN115360034A (en) * | 2022-07-26 | 2022-11-18 | 嘉润电气科技有限公司 | Arc extinguish chamber |
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