CN216957942U - Contact system of frame circuit breaker - Google Patents
Contact system of frame circuit breaker Download PDFInfo
- Publication number
- CN216957942U CN216957942U CN202220647604.5U CN202220647604U CN216957942U CN 216957942 U CN216957942 U CN 216957942U CN 202220647604 U CN202220647604 U CN 202220647604U CN 216957942 U CN216957942 U CN 216957942U
- Authority
- CN
- China
- Prior art keywords
- contact
- arc
- movable contact
- static
- arc striking
- 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.)
- Active
Links
Images
Landscapes
- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The utility model relates to a contact system of a frame circuit breaker, which comprises a supporting piece, a static connecting plate arranged on the supporting piece, a static contact arranged on the static connecting plate, a movable contact knife, a copper braid connected between the movable connecting plate and the movable contact knife, and a movable contact arranged on the movable contact knife and matched with the static contact. The utility model has the advantages of simple structure, stable and reliable performance, high breaking capacity and long service life.
Description
Technical Field
The utility model relates to the technical field of low-voltage electric appliances, in particular to a contact system of a frame circuit breaker.
Background
The frame-type breaker is a mechanical switch appliance which can connect, bear and break current under normal circuit conditions and can also connect, bear and break current for a certain time under specified abnormal circuit conditions. The frame type circuit breaker comprises a chassis, a mask, a conductive system, a contact system and an operating mechanism for realizing the connection between the conductive system and the contact system. The structure design of the existing contact system is unreasonable, so that a moving contact and a static contact of the contact system are easily ablated by electric arcs, and the contact system of the frame circuit breaker has the defects of unreliable performance, low breaking capacity and short service life.
Disclosure of Invention
The utility model aims to overcome the defects of the prior art and provide the contact system of the frame circuit breaker, which has the advantages of simple structure, stable and reliable performance, high breaking capacity and long service life.
In order to achieve the purpose, the utility model adopts a contact system of a frame circuit breaker, which comprises a supporting piece, a static connecting plate arranged on the supporting piece, a static contact arranged on the static connecting plate, a movable contact knife, a copper braid connected between the movable connecting plate and the movable contact knife, and a movable contact arranged on the movable contact knife and matched with the static contact, wherein an arc striking plate is arranged at one end of the static connecting plate corresponding to the movable contact knife, one end of the arc striking plate extends towards the direction of the movable contact knife and is provided with a contact part, a static arc contact is arranged on the contact part, and an arc protruding part matched with the static arc contact is arranged at one end of the movable contact knife.
The beneficial effect of above-mentioned structure does: an arc striking plate is arranged on the static connecting plate, a static arc contact matched with the movable contact knife is arranged on the arc striking plate, an arc-shaped bulge part on the movable contact knife is firstly contacted with the static arc contact in the switching-on process, and then the movable contact on the movable contact knife is contacted with the static contact, so that the electric arc can be attracted by the arc striking plate, and the movable contact and the static contact can be prevented from being ablated by the electric arc; in the process of opening the brake, the movable contact and the fixed contact are disconnected firstly, and then the arc-shaped bulge part is disconnected with the fixed arc contact, so that the movable contact and the fixed contact can be prevented from being ablated by electric arc when the movable contact and the fixed contact are disconnected, and the electric service life of a contact system can be prolonged. Therefore, the contact system of the frame-type circuit breaker has the advantages of simple structure, stable and reliable performance, high breaking capacity and long service life.
Particularly, the other end of the arc striking plate bends and extends towards the upper part of the static connecting plate and is provided with a first arc striking part, and the tail part of the contact part bends and extends towards the upper part of the movable contact knife and is provided with a second arc striking part. The first arc striking part of the arc striking plate extends above the movable contact knife, so that the rapid arc suction of the first arc striking part can be realized, and the arc extinguishing performance of a contact system of the frame circuit breaker can be improved.
In particular, an arc striking space is formed between the first arc striking part and the second arc striking part. An arc striking space is formed between the first arc striking part and the second arc striking part, so that the arc extinguishing performance of the contact system is improved.
Drawings
Fig. 1 is a schematic structural diagram in a closing process according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram after closing according to an embodiment of the present invention.
Fig. 3 is a schematic structural diagram of the opening process 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 contact system of a frame circuit breaker, including a support 10, a fixed connecting plate 11 disposed on the support 10, a fixed contact 12 disposed on the fixed connecting plate 11, a movable connecting plate 13, a movable contact knife 14, a copper braid 15 connected between the movable connecting plate 13 and the movable contact knife 14, and a movable contact 16 disposed on the movable contact knife 14 and matched with the fixed contact 12, wherein an arc striking plate 17 is disposed at an end of the fixed connecting plate 11 corresponding to the movable contact knife 14, one end of the arc striking plate 17 extends toward the movable contact knife 14 and is formed with a contact portion 171, the contact portion 171 is provided with a fixed arc contact 172, and one end of the movable contact knife 14 is provided with an arc protruding portion 142 matched with the fixed arc contact 172. The other end of the arc striking plate 17 is bent and extended above the static connection plate 11 and is formed with a first arc striking part 173, and the tail of the contact part 171 is bent and extended above the movable contact 14 and is formed with a second arc striking part 174. The first arc striking part of the arc striking plate extends above the movable contact knife, so that the rapid arc suction of the first arc striking part can be realized, and the arc extinguishing performance of a contact system of the frame circuit breaker can be improved. An arc striking space 170 is formed between the first arc striking part 173 and the second arc striking part 174. An arc striking space is formed between the first arc striking part and the second arc striking part, so that the arc extinguishing performance of the contact system is improved.
An arc striking plate is arranged on the static connecting plate, a static arc contact matched with the movable contact knife is arranged on the arc striking plate, an arc-shaped protruding part on the movable contact knife is firstly contacted with the static arc contact in the switching-on process, and then the movable contact on the movable contact knife is contacted with the static contact, so that electric arc can be attracted by the arc striking plate, and the movable contact and the static contact can be prevented from being ablated by the electric arc; in the process of opening the brake, the movable contact and the fixed contact are disconnected firstly, and then the arc-shaped bulge part is disconnected with the fixed arc contact, so that the movable contact and the fixed contact can be prevented from being ablated by electric arc when the movable contact and the fixed contact are disconnected, and the electric service life of a contact system can be prolonged. Therefore, the contact system of the frame-type circuit breaker has the advantages of simple structure, stable and reliable performance, high breaking capacity and long service life.
Claims (3)
1. The utility model provides a frame circuit breaker's contact system, includes the supporter, sets up quiet connecting plate on the supporter, sets up stationary contact on quiet connecting plate, moves connecting plate, movable contact sword, connects and move copper braid over braid between connecting plate and the movable contact sword, set up on the movable contact sword and with stationary contact matched with movable contact, its characterized in that: an arc striking plate is arranged at one end of the static connecting plate corresponding to the movable contact knife, one end of the arc striking plate extends towards the movable contact knife and is provided with a contact part, a static arc contact is arranged on the contact part, and an arc-shaped protruding part matched with the static arc contact is arranged at one end of the movable contact knife.
2. The contact system of a frame circuit breaker of claim 1, wherein: the other end of the arc striking plate bends and extends towards the upper part of the static connecting plate and is provided with a first arc striking part, and the tail part of the contact part bends and extends towards the upper part of the movable contact knife and is provided with a second arc striking part.
3. The contact system of a frame circuit breaker of claim 2, wherein: an arc striking space is formed between the first arc striking part and the second arc striking part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220647604.5U CN216957942U (en) | 2022-03-23 | 2022-03-23 | Contact system of frame circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220647604.5U CN216957942U (en) | 2022-03-23 | 2022-03-23 | Contact system of frame circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216957942U true CN216957942U (en) | 2022-07-12 |
Family
ID=82297260
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220647604.5U Active CN216957942U (en) | 2022-03-23 | 2022-03-23 | Contact system of frame circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216957942U (en) |
-
2022
- 2022-03-23 CN CN202220647604.5U patent/CN216957942U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20230377824A1 (en) | Quick tripping device and circuit breaker | |
| CN109494132B (en) | Double-contact molded case circuit breaker | |
| CN212257298U (en) | Multi-contact arc-extinguishing relay | |
| CN201378523Y (en) | Novel flexible static arc contact | |
| CN216957942U (en) | Contact system of frame circuit breaker | |
| CN218769250U (en) | Heavy current circuit breaker | |
| CN206628399U (en) | A kind of strong high voltage isolator moving contact of contact performance | |
| CN107359081B (en) | A kind of method and switching device of motor driven bridging contact on-load switch | |
| CN110571103A (en) | hydraulic electromagnetic breaker belt connector | |
| CN213936096U (en) | Circuit breaker | |
| CN212517092U (en) | Circuit breaker opening and closing contact mechanism and circuit breaker | |
| CN210223912U (en) | Hydraulic electromagnetic breaker belt connector | |
| CN219350124U (en) | Circuit breaker structure with high breaking capacity | |
| CN111540640A (en) | Integrated vacuum circuit breaker and vacuum isolating switch | |
| CN217822644U (en) | Static contact assembly and circuit breaker | |
| CN215183691U (en) | Isolating switch with equipotential structure | |
| CN216624175U (en) | Contact system and circuit breaker | |
| CN2430779Y (en) | Start speed breaking device of vacuum breaker | |
| CN112185780B (en) | Contact arc striking pin | |
| CN217485323U (en) | Arc striking device and circuit breaker | |
| CN216749719U (en) | Arc extinguish chamber for vacuum circuit breaker | |
| CN220324374U (en) | Static reed and relay | |
| CN112863953B (en) | Asynchronous double-break contact mechanism and residual current operated circuit breaker | |
| CN220627721U (en) | Conductive loop structure and circuit breaker | |
| CN211628971U (en) | Vacuum switch |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |