CN217114265U - High-power double-wiring terminal breaker - Google Patents
High-power double-wiring terminal breaker Download PDFInfo
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- CN217114265U CN217114265U CN202220817852.XU CN202220817852U CN217114265U CN 217114265 U CN217114265 U CN 217114265U CN 202220817852 U CN202220817852 U CN 202220817852U CN 217114265 U CN217114265 U CN 217114265U
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- circuit breaker
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- arc extinguishing
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Abstract
The utility model relates to a high-power double-wiring terminal circuit breaker, including casing, operating device, moving contact, static contact, arc extinguishing system, electromagnetism tripping device, with the static contact electricity be connected first wiring terminal subassembly, with the second wiring terminal subassembly of moving contact electricity connection, the arc extinguishing system include explosion chamber, striking piece, the one end of striking piece connect on the static contact, the other end of striking piece extend and be formed with striking portion to the explosion chamber direction, the explosion chamber setting on striking portion, striking piece on the symmetry be provided with two arc-absorbing portions, be provided with a flash barrier respectively in two arc-absorbing portions, be formed with the striking passageway between two flash barriers, this striking passageway intercommunication is between moving contact and explosion chamber. The utility model has the advantages of simple structure, stable performance, reliable performance, convenient wiring, good arc extinguishing performance.
Description
Technical Field
The utility model relates to a circuit breaker technical field, concretely relates to high-power two wiring terminal circuit breaker.
Background
The miniature circuit breaker is suitable for protecting overload and short circuit of a line with rated voltage of 230/400V and rated current of 50/60Hz and 63A, and can also be used for infrequent operation and conversion of the line under normal conditions. The method is mainly used in various places such as industrial, commercial, high-rise and civil houses. The miniature circuit breaker includes operating device, moving contact, static contact, arc extinguishing system, electromagnetism tripping device, and the structural design of the arc extinguishing system of current miniature circuit breaker is unreasonable, and the arc extinguishing effect is relatively poor, and breaking capacity is relatively poor, can not satisfy powerful operation requirement. And the wiring terminal of the circuit breaker has unreasonable structural design, insecure wiring and inconvenient wiring. Therefore, the circuit breaker has the defects of complex structure, unreliable performance, inconvenient wiring and poor arc extinguishing performance.
Disclosure of Invention
An object of the utility model is to overcome prior art's defect, provide a high-power two-wire terminal circuit breaker of simple structure, dependable and stable performance, wiring convenient, arc extinguishing performance is good.
In order to achieve the above object, the utility model discloses a high-power double-terminal circuit breaker, including casing, operating device, moving contact, static contact, arc extinguishing system, electromagnetism tripping device, the first terminal subassembly of being connected with the static contact electricity, the second terminal subassembly of being connected with the moving contact electricity, arc extinguishing system include explosion chamber, striking plate, the one end of striking plate connect on the static contact, the other end of striking plate extend and be formed with striking portion to the explosion chamber direction, the explosion chamber setting on striking portion, striking plate on the symmetry be provided with two arc portions of inhaling, be provided with a flash barrier respectively on two arc portions of inhaling, be formed with the striking passageway between two flash barriers, this striking passageway intercommunication is between moving contact and explosion chamber.
The beneficial effect of above-mentioned structure is: the arc striking plate is provided with two arc suction parts respectively, the two arc suction parts are provided with the arc isolating plates, the arc striking plate with the structural design can quickly introduce electric arcs into the arc extinguishing chamber, and the arc striking channel between the two arc isolating plates can quickly guide the electric arcs into the arc extinguishing chamber, so that the arc extinguishing effect is favorably enhanced. And two flash barriers set on the striking plate, which is convenient for assembling flash barriers and striking plate. Therefore, the circuit breaker has the advantages of simple structure, stable and reliable performance and good arc extinguishing performance.
Particularly, one end of the flash barrier is provided with a slot, the arc absorbing part is inserted in the slot and forms clamping fit of the arc absorbing part and the flash barrier. The flash barrier and the arc striking piece are connected in a clamping matching mode, so that the flash barrier and the arc striking piece are convenient to assemble, and the assembly is more convenient.
Particularly, a guide convex strip is arranged at the other end of the arc isolating plate corresponding to the movable contact, and the automatic contact of the guide convex strip bends and extends towards the arc extinguish chamber. The guide convex strips can play a role in isolating arcs, can guide electric arcs into the arc extinguish chamber, realize quick extinguishing of the electric arcs, and are favorable for improving the arc extinguishing performance of the circuit breaker.
Particularly, an arc striking angle is arranged at one end of a magnetic yoke of the electromagnetic tripping mechanism corresponding to the moving contact, and the tail of the arc striking angle is bent and extends into the arc extinguishing chamber. The arc striking angle can lead the electric arc on the moving contact into the arc extinguishing chamber, thereby being beneficial to improving the arc extinguishing performance of the miniature circuit breaker.
In particular, the other end of the magnetic yoke is provided with a bimetallic strip matched with a lock catch of the operating mechanism. With the bimetallic strip setting on the yoke, can realize this miniature circuit breaker's overheat protection function, and can realize the modular structure design of electromagnetic trip mechanism and bimetallic strip, it is more convenient to assemble.
Particularly, the first terminal assembly comprises a conductive plate connected with the static contact and two first terminals arranged on the conductive plate side by side, first terminal screws of the two first terminals abut against the conductive plate, and a wiring space is formed between the conductive plate and the first terminals. Be provided with two first binding post on the current conducting plate to can guarantee that the wiring of first binding post subassembly is more firm, the wiring is more convenient, and can satisfy powerful operation requirement.
Particularly, the two sides of the current-conducting plate are respectively provided with a limiting lug, the two first wiring terminals are respectively provided with a limiting hole matched with the limiting lug, and the limiting lugs are clamped in the limiting holes and form the limiting matching of the guide plate and the two first wiring terminals. The current conducting plate and the two first wiring terminals are in limit fit, so that the wiring of the first wiring terminal component can be ensured to be firmer.
Particularly, the second wiring terminal component comprises a wiring board electrically connected with the moving contact and two second wiring terminals arranged on the wiring board side by side, second wiring screws of the two second wiring terminals are abutted against the wiring board, and a wiring cavity is formed between the wiring board and the second wiring terminals. The two second wiring terminals are arranged on the wiring board, so that the wiring of the second wiring terminal component can be ensured to be firmer, the high-power use requirement can be met, and the working reliability of the miniature circuit breaker can be improved.
Drawings
Fig. 1 is a perspective view of the internal structure of the embodiment of the present invention.
Fig. 2 is an exploded view of the internal structure of the embodiment of the present invention.
Fig. 3 is a perspective view of the flash barrier according to the embodiment of the present invention.
Detailed Description
As shown in fig. 1 to 3, an embodiment of the present invention is a high power dual-terminal circuit breaker, which includes a housing 10, an operating mechanism 11, a moving contact 12, a static contact 13, an arc extinguishing system 20, an electromagnetic trip mechanism 14, a first terminal assembly 30 electrically connected to the static contact 13, a second terminal assembly 40 electrically connected to the moving contact 12, the arc extinguishing system 20 comprises an arc extinguishing chamber 21 and an arc striking plate 22, one end of the arc striking plate 22 is connected to the static contact 13, the other end of the arc striking piece 22 extends towards the arc extinguishing chamber 21 and is provided with an arc striking part 221, the arc extinguishing chamber 21 is arranged on the arc striking portion 221, the arc striking sheet 22 is symmetrically provided with two arc absorbing portions 222, the two arc absorbing portions 222 are respectively provided with an arc isolating plate 23, an arc striking channel 230 is formed between the two arc isolating plates 23, and the arc striking channel 230 is communicated between the movable contact 12 and the arc extinguishing chamber 21. One end of the flash barrier 23 is provided with a slot 231, the arc absorbing part 222 is inserted into the slot 231 and forms a clamping fit between the arc absorbing part 222 and the flash barrier 23. The flash barrier and the arc striking piece are connected in a clamping matching mode, so that the flash barrier and the arc striking piece are convenient to assemble, and the assembly is more convenient. The other end of the arc-isolating plate 23 is provided with a guiding convex strip 232 corresponding to the movable contact 12, and the guiding convex strip 232 automatically bends and extends the contact 12 towards the arc-extinguishing chamber 21. The guide convex strips can play a role in isolating arcs, can guide electric arcs into the arc extinguish chamber, realize quick extinguishing of the electric arcs, and are favorable for improving the arc extinguishing performance of the circuit breaker.
As shown in fig. 1, an arc striking angle 142 is disposed at one end of the yoke 141 of the electromagnetic trip mechanism 14 corresponding to the movable contact 12, and a tail portion of the arc striking angle 142 is bent and extended into the arc extinguishing chamber 21. The arc striking angle can lead the electric arc on the moving contact into the arc extinguishing chamber, thereby being beneficial to improving the arc extinguishing performance of the miniature circuit breaker. The other end of the yoke 141 is provided with a bimetal 143 which is engaged with the latch 111 of the operating mechanism 11. With the bimetallic strip setting on the yoke, can realize this miniature circuit breaker's overheat protection function, and can realize the modular structure design of electromagnetic trip mechanism and bimetallic strip, it is more convenient to assemble. The first terminal assembly 30 includes a conductive plate 31 connected to the stationary contact 13, and two first terminals 32 arranged side by side on the conductive plate 31, wherein first terminal screws 33 of the two first terminals 32 abut against the conductive plate 31, and a terminal space 300 is formed between the conductive plate 31 and the first terminals 32. Be provided with two first binding post on the current conducting plate to can guarantee that the wiring of first binding post subassembly is more firm, the wiring is more convenient, and can satisfy powerful operation requirement. The two sides of the conductive plate 31 are respectively provided with a limit bump 311, the two first connecting terminals 32 are respectively provided with a limit hole 321 matched with the limit bump 311, the limit bump 311 is clamped in the limit hole 321, and the guide plate 31 and the two first connecting terminals 32 are in limit fit. The current conducting plate and the two first wiring terminals are in limit fit, so that the wiring of the first wiring terminal component can be ensured to be firmer. The second terminal assembly 40 includes a terminal plate 41 electrically connected to the movable contact 12, and two second terminals 42 arranged side by side on the terminal plate 41, wherein second terminal screws 43 of the two second terminals 42 abut against the terminal plate 41, and a terminal cavity 400 is formed between the terminal plate 41 and the second terminals 42. The two second wiring terminals are arranged on the wiring board, so that the wiring of the second wiring terminal component can be ensured to be firmer, the high-power use requirement can be met, and the working reliability of the miniature circuit breaker can be improved.
The arc striking plate is provided with two arc suction parts respectively, the two arc suction parts are provided with the arc isolating plates, the arc striking plate with the structural design can quickly introduce electric arcs into the arc extinguishing chamber, and the arc striking channel between the two arc isolating plates can quickly guide the electric arcs into the arc extinguishing chamber, so that the arc extinguishing effect is favorably enhanced. And two flash barriers set on the striking plate, which is convenient for assembling flash barriers and striking plate. Therefore, the circuit breaker has the advantages of simple structure, stable and reliable performance and good arc extinguishing performance.
Claims (8)
1. The utility model provides a high-power double-terminal circuit breaker, includes casing, operating device, moving contact, static contact, arc extinguishing system, electromagnetism tripping device, the first terminal subassembly of being connected with the static contact electricity, the second terminal subassembly of being connected with the moving contact electricity, its characterized in that: the arc extinguishing system comprises an arc extinguishing chamber and an arc striking piece, one end of the arc striking piece is connected to the static contact, the other end of the arc striking piece extends towards the arc extinguishing chamber and is provided with an arc striking part, the arc extinguishing chamber is arranged on the arc striking part, the arc striking piece is symmetrically provided with two arc suction parts, two arc suction parts are respectively provided with an arc isolating plate, an arc striking channel is formed between the two arc isolating plates, and the arc striking channel is communicated between the moving contact and the arc extinguishing chamber.
2. The high power dual terminal circuit breaker of claim 1, wherein: one of flash barrier be provided with the slot, inhale the arc portion alternate in the slot, and constitute the joint cooperation of inhaling arc portion and flash barrier.
3. The high power dual terminal circuit breaker according to claim 1 or 2, wherein: and a guide convex strip is arranged at the other end of the arc isolating plate corresponding to the moving contact, and the automatic contact of the guide convex strip bends and extends towards the arc extinguish chamber.
4. The high power dual terminal circuit breaker according to claim 1 or 2, wherein: an arc striking angle is arranged at one end of a magnetic yoke of the electromagnetic tripping mechanism corresponding to the moving contact, and the tail of the arc striking angle is bent and extends into the arc extinguishing chamber.
5. The high power dual terminal circuit breaker of claim 4, wherein: and the other end of the magnetic yoke is provided with a bimetallic strip matched with the lock catch of the operating mechanism.
6. The high power dual terminal circuit breaker according to claim 1 or 2, wherein: the first wiring terminal assembly comprises a current conducting plate connected with the static contact and two first wiring terminals arranged on the current conducting plate side by side, first wiring screws of the two first wiring terminals abut against the current conducting plate, and a wiring space is formed between the current conducting plate and the first wiring terminals.
7. The high power dual terminal circuit breaker of claim 6, wherein: the two sides of the current-conducting plate are respectively provided with a limiting lug, the two first connecting terminals are respectively provided with a limiting hole matched with the limiting lug, and the limiting lugs are clamped in the limiting holes and form limiting matching of the guide plate and the two first connecting terminals.
8. The high power dual terminal circuit breaker according to claim 1 or 2, wherein: the second wiring terminal component comprises a wiring board electrically connected with the moving contact and two second wiring terminals arranged on the wiring board side by side, second wiring screws of the two second wiring terminals are abutted against the wiring board, and a wiring cavity is formed between the wiring board and the second wiring terminals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220817852.XU CN217114265U (en) | 2022-04-09 | 2022-04-09 | High-power double-wiring terminal breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220817852.XU CN217114265U (en) | 2022-04-09 | 2022-04-09 | High-power double-wiring terminal breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217114265U true CN217114265U (en) | 2022-08-02 |
Family
ID=82579764
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220817852.XU Active CN217114265U (en) | 2022-04-09 | 2022-04-09 | High-power double-wiring terminal breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217114265U (en) |
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2022
- 2022-04-09 CN CN202220817852.XU patent/CN217114265U/en active Active
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