CN214477050U - Contact system of change-over switch - Google Patents
Contact system of change-over switch Download PDFInfo
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- CN214477050U CN214477050U CN202120937384.5U CN202120937384U CN214477050U CN 214477050 U CN214477050 U CN 214477050U CN 202120937384 U CN202120937384 U CN 202120937384U CN 214477050 U CN214477050 U CN 214477050U
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- contact
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- joint
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Abstract
The utility model relates to a contact system of a change-over switch, which comprises a shell and a contact assembly arranged in the shell, the contact assembly comprises a contact support rotatably arranged in the shell, a clamping plate arranged in the contact support, two movable contact bridges symmetrically arranged on the clamping plate, two magnetic conduction plates respectively arranged on one side of the two movable contact bridges, spring supports arranged on the two movable contact bridges, a spring piece arranged between the spring supports and the magnetic conduction plates, two static contact pieces respectively arranged in the shell, and arc extinguishing chamber assemblies respectively arranged in the shell corresponding to the two static contact pieces, the arc extinguish chamber component comprises a fixed seat arranged in the shell, an arc extinguish chamber arranged on the fixed seat and a magnet, wherein the fixed seat is provided with a clamping part which is inserted in the arc extinguish chamber, the clamping portion is provided with a clamping groove matched with the magnet, and the magnet is clamped in the clamping groove. The utility model has the advantages of simple structure, stable and reliable performance, long service life and convenient assembly.
Description
Technical Field
The utility model relates to a change over switch technical field, concretely relates to change over switch's contact system.
Background
At present, a change-over switch is a switching device for switching over two or more power sources or loads. The change-over switch is often used to switch on and off the circuit infrequently to switch on the electrical load. The change-over switch has wide application, and can be used as a circuit control switch, a test equipment switch, a motor control switch, a master control switch and the like. The current that can be carried by the change-over switch is great, so the change-over switch generally needs to have higher security. The change-over switch comprises an operating mechanism and a contact system, the structural design of the contact system of the existing change-over switch is unreasonable, and the contact system of the change-over switch has the defects of complex structure, unreliable performance and short service life.
Disclosure of Invention
An object of the utility model is to overcome prior art's defect, provide a simple structure, stable performance are reliable, long service life, assemble convenient change over switch's contact system.
In order to achieve the above purpose, the utility model adopts a contact system of a change-over switch, which comprises a shell and a contact assembly arranged in the shell, wherein the contact assembly comprises a contact support rotatably arranged in the shell, a clamping plate arranged in the contact support, two movable contact bridges symmetrically arranged on the clamping plate, two magnetic conductive plates respectively arranged on one side of the two movable contact bridges, spring supports arranged on the two movable contact bridges, a spring piece arranged between the spring support and the magnetic conductive plates, two chamber assemblies respectively arranged in the shell and respectively arranged in the shell corresponding to the two stationary contact plates, the chamber assemblies comprise a fixed seat arranged in the shell, a chamber arranged on the fixed seat and a magnet, the fixed seat is provided with a clamping part inserted in the chamber, the clamping part is provided with a clamping groove matched with the magnet, the magnet is clamped in the clamping groove.
The structure has the advantages that the arc extinguishing assembly and the shell are assembled in a modularized mode, so that the arc extinguishing assembly and the shell are convenient to assemble, and the assembling efficiency is higher. And the magnet is arranged in the fixed seat, the magnet can rapidly introduce electric arc into the arc extinguishing chamber, the electric arc can be rapidly extinguished, and the arc extinguishing effect of the contact system is enhanced. Therefore, the contact system of the change-over switch has the advantages of simple structure, stable and reliable performance, long service life and convenience in assembly.
In particular, one end of the static contact piece extends into the arc extinguish chamber and is provided with an arc striking angle. The arc striking angle can lead the electric arc into the arc extinguishing chamber fast, and the electric arc can extinguish fast, is favorable for improving the arc extinguishing effect of the contact system of the change-over switch.
Particularly, the fixing base on be provided with the joint groove, the casing in be provided with joint groove matched with joint piece, joint piece block in the joint inslot, and constitute the joint cooperation of fixing base and casing. The fixing seat is connected with the shell in a clamping matching mode, so that the fixing seat and the shell are convenient to assemble, the arc extinguishing chamber and the magnet are respectively clamped on the fixing seat, the modular assembly of the arc extinguishing assembly and the shell can be achieved, and the assembly efficiency of the contact system is improved.
Drawings
Fig. 1 is an internal structure diagram of the embodiment of the present invention.
Fig. 2 is an assembly view of the clamping plate and the movable contact bridge of the embodiment of the present invention.
Fig. 3 is an arc extinguishing chamber assembly of the embodiment of the present invention.
Fig. 4 is a cross-sectional view of an arc chute assembly according to an embodiment of the present invention.
Detailed Description
As shown in fig. 1 to 4, an embodiment of the present invention is a contact system of a transfer switch, including a housing 10, a contact assembly 20 disposed in the housing 10, where the contact assembly 20 includes a contact support 21 rotatably disposed in the housing 10, a clamping plate 22 disposed in the contact support 21, two movable contact bridges 23 symmetrically disposed on the clamping plate 22, two magnetic conductive plates 24 disposed on one side of the two movable contact bridges 23, spring supports 25 disposed on the two movable contact bridges 23, a spring plate 26 disposed between the spring support 25 and the magnetic conductive plate 24, two stationary contact plates 27 disposed in the housing 10, and arc extinguishing chamber assemblies 30 disposed in the housing 10 corresponding to the two stationary contact plates 27, where the arc extinguishing chamber assemblies 30 include a fixed seat 31 disposed in the housing 10, an arc extinguishing chamber 32 disposed on the fixed seat 31, and a magnet 33, where the fixed seat 31 is provided with a clamping portion 311 inserted in the arc extinguishing chamber 32, the engaging portion 311 is provided with an engaging groove 312 engaged with the magnet 33, and the magnet 33 is engaged with the engaging groove 312.
One end of the static contact 27 extends into the arc extinguishing chamber 32 and is provided with an arc striking angle 271. The arc striking angle can lead the electric arc into the arc extinguishing chamber fast, and the electric arc can extinguish fast, is favorable for improving the arc extinguishing effect of the contact system of the change-over switch. Fixing base 31 on be provided with joint groove 313, casing 10 in be provided with joint groove 313 matched with joint piece, joint piece block in joint groove 313, and constitute fixing base 31 and casing 10's joint cooperation. The fixing seat is connected with the shell in a clamping matching mode, so that the fixing seat and the shell are convenient to assemble, the arc extinguishing chamber and the magnet are respectively clamped on the fixing seat, the modular assembly of the arc extinguishing assembly and the shell can be achieved, and the assembly efficiency of the contact system is improved.
The arc extinguishing component and the shell are assembled in a modular mode, so that the arc extinguishing component and the shell are convenient to assemble, and the assembly efficiency is higher. And the magnet is arranged in the fixed seat, the magnet can rapidly introduce electric arc into the arc extinguishing chamber, the electric arc can be rapidly extinguished, and the arc extinguishing effect of the contact system is enhanced. Therefore, the contact system of the change-over switch has the advantages of simple structure, stable and reliable performance, long service life and convenience in assembly.
Claims (3)
1. A contact system of a change-over switch comprises a shell and a contact assembly arranged in the shell, and is characterized in that: contact subassembly including rotate the contact carrier that sets up in the casing, set up cardboard in contact carrier, two symmetry set up the moving contact bridge on the cardboard, two magnetic conduction boards that set up respectively on two moving contact bridge one sides, set up the spring bracket on two moving contact bridges, set up spring leaf between spring bracket and magnetic conduction board, two set up respectively in casing static contact, correspond two static contact departments and set up the arc extinguishing chamber subassembly in the casing respectively, arc extinguishing chamber subassembly including setting up fixing base in the casing, setting explosion chamber, the magnet on the fixing base, the fixing base on be provided with the joint portion of interlude in the arc extinguishing chamber, be provided with the draw-in groove with magnet matched with in this joint portion, the magnet block in the draw-in groove.
2. The contact system of a diverter switch according to claim 1, wherein: one end of the static contact piece extends into the arc extinguish chamber and forms an arc striking angle.
3. Contact system of a diverter switch according to claim 1 or 2, characterized in that: the fixing base on be provided with the joint groove, the casing in be provided with joint groove matched with joint piece, joint piece block in the joint inslot, and constitute the joint cooperation of fixing base and casing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120937384.5U CN214477050U (en) | 2021-04-30 | 2021-04-30 | Contact system of change-over switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120937384.5U CN214477050U (en) | 2021-04-30 | 2021-04-30 | Contact system of change-over switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214477050U true CN214477050U (en) | 2021-10-22 |
Family
ID=78181586
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120937384.5U Active CN214477050U (en) | 2021-04-30 | 2021-04-30 | Contact system of change-over switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214477050U (en) |
-
2021
- 2021-04-30 CN CN202120937384.5U patent/CN214477050U/en active Active
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