CN214476997U - Contact system of change-over switch - Google Patents
Contact system of change-over switch Download PDFInfo
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- CN214476997U CN214476997U CN202120938216.8U CN202120938216U CN214476997U CN 214476997 U CN214476997 U CN 214476997U CN 202120938216 U CN202120938216 U CN 202120938216U CN 214476997 U CN214476997 U CN 214476997U
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- contact
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Abstract
The utility model relates to a change over switch's contact system, including the casing, set up the contact subassembly in the casing, the contact subassembly including rotate the contact carrier that sets up in the casing, set up cardboard, two symmetry in the contact carrier and set up movable contact bridge, two magnetic conductive plates, two that set up respectively on two movable contact bridge one sides set up static contact in the casing respectively, two movable contact bridges on be provided with spring bracket, spring bracket and magnetic conductive plates between be provided with the spring leaf, two movable contact bridge's both ends be formed with respectively with two static contact matched with contact slots. 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 realize the above purpose, the utility model discloses a change over switch's contact system, including the casing, set up the contact subassembly in the casing, the contact subassembly including rotate the contact support that sets up in the casing, set up cardboard in the contact support, two symmetry set up movable contact bridge on the cardboard, two magnetic conductive plates, two that set up respectively on two movable contact bridge one sides set up static contact in the casing respectively, two movable contact bridge on be provided with spring bracket, spring bracket and magnetic conductive plate between be provided with the spring leaf, two movable contact bridge's both ends be formed with respectively with two static contact matched with contact grooves.
The structure has the advantages that the two movable contact bridges are arranged on the clamping plate and are integrated and modularized, the clamping plate is arranged on the contact support, so that the movable contact bridges and the contact support are convenient to assemble, and the movable contact bridges and the contact support are more compactly connected. The spring piece can increase the contact pressure of the movable contact bridge, is favorable for reducing the contact resistance of the movable contact bridge and the static contact piece, and is favorable for prolonging the service life of a contact system, so that 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.
Particularly, the contact support on be provided with the joint hole, the cardboard set up in the joint hole, and be provided with a joint piece on the both sides of cardboard respectively, the contact support on correspond the both sides department in joint hole and be provided with the draw-in groove that cooperates with each joint piece respectively, the joint piece block in the draw-in groove, and constitute the joint cooperation of cardboard and contact support. The contact support and the clamping plate are assembled in a clamping matching mode, the contact support and the clamping plate are assembled more conveniently, and the movable contact bridge is clamped on the clamping plate, so that the modular assembly of the contact support and the movable contact bridge is conveniently realized.
Particularly, the clamping plate is provided with a clamping hole, the two movable contact bridges are respectively inserted into the clamping hole, and the clamping plate is in clamping fit with the two movable contact bridges. The clamping plate and the movable contact bridge are assembled in a clamping fit mode, so that the clamping plate and the movable contact bridge are convenient to assemble, and the assembly efficiency of the contact system is improved.
Particularly, the middle part of the spring leaf is provided with a positioning groove, the positioning groove is clamped on the spring support and forms limiting fit of the spring leaf and the spring support, and two ends of the spring leaf are respectively abutted against one side of the magnetic conduction plate. The spring piece clamps between spring support and movable contact bridge, the assembly of spring piece and spring support of being convenient for, and guarantees that the connection of spring piece, spring support, movable contact bridge is more stable, and movable contact bridge also can keep invariable contact pressure to be favorable to improving this contact system job stabilization nature.
Drawings
Fig. 1 is an internal structure diagram of the embodiment of the present invention.
Fig. 2 is an assembly view of the movable contact bridge and the clamping plate according to the embodiment of the present invention.
Fig. 3 is a perspective view of a contact holder according to an embodiment of the present invention.
Fig. 4 is a perspective view of a clamping plate according to an embodiment of the present invention.
Fig. 5 is a perspective view of a spring plate according to an embodiment of the present invention.
Detailed Description
As shown in fig. 1-5, the embodiment of the utility model provides a change-over switch's contact system, include casing 10, set up contact assembly 20 in the casing 10, contact assembly 20 including rotate the contact support 21 that sets up in casing 10, set up cardboard 22 in contact support 21, two symmetry set up the moving contact bridge 23 on cardboard 22, two magnetic conductive plates 24, two static contact plates 25 that set up respectively in casing 10 on two moving contact bridges 23 one side, two moving contact bridges 23 on be provided with spring bracket 26, spring bracket 26 and magnetic conductive plates 24 between be provided with spring leaf 27, two moving contact bridge 23 both ends be formed with respectively with two static contact plate 25 matched with contact groove 230.
As shown in fig. 2 to 5, the contact support 21 is provided with a clamping hole 211, the clamping plate 22 is disposed in the clamping hole 211, two sides of the clamping plate 22 are respectively provided with a clamping piece 221, two sides of the contact support 21 corresponding to the clamping hole 211 are respectively provided with a clamping groove 212 matched with each clamping piece 221, and the clamping pieces 221 are clamped in the clamping grooves 212 to form a clamping fit between the clamping plate 22 and the contact support 21. The contact support and the clamping plate are assembled in a clamping matching mode, the contact support and the clamping plate are assembled more conveniently, and the movable contact bridge is clamped on the clamping plate, so that the modular assembly of the contact support and the movable contact bridge is conveniently realized.
The clamping plate 22 is provided with a clamping hole 222, and the two movable contact bridges 23 are respectively inserted into the clamping hole 222 to form clamping fit of the clamping plate 22 and the two movable contact bridges 23. The clamping plate and the movable contact bridge are assembled in a clamping fit mode, so that the clamping plate and the movable contact bridge are convenient to assemble, and the assembly efficiency of the contact system is improved. The middle part of the spring plate 27 is provided with a positioning groove 271, the positioning groove 271 is clamped on the spring support 21 and forms the limit matching of the spring plate 27 and the spring support 21, and two ends of the spring plate 27 respectively abut against one side of the magnetic conduction plate 24. The spring piece clamps between spring support and movable contact bridge, the assembly of spring piece and spring support of being convenient for, and guarantees that the connection of spring piece, spring support, movable contact bridge is more stable, and movable contact bridge also can keep invariable contact pressure to be favorable to improving this contact system job stabilization nature.
Two movable contact bridges are arranged on the clamping plates and are integrated in a modularized mode, the clamping plates are arranged on the contact supports, and therefore the movable contact bridges and the contact supports can be assembled conveniently, and the movable contact bridges and the contact supports are connected more compactly. The spring piece can increase the contact pressure of the movable contact bridge, is favorable for reducing the contact resistance of the movable contact bridge and the static contact piece, and is favorable for prolonging the service life of a contact system, so that 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 (4)
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: 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 sides of the two movable contact bridges, and two static contact plates respectively arranged in the shell, wherein spring supports are arranged on the two movable contact bridges, spring pieces are arranged between the spring supports and the magnetic conduction plates, and contact grooves matched with the two static contact plates are respectively formed at two ends of the two movable contact bridges.
2. The contact system of a diverter switch according to claim 1, wherein: the contact support on be provided with the joint hole, the cardboard set up downthehole at the joint, and be provided with a joint piece on the both sides of cardboard respectively, the contact support on correspond the both sides department in joint hole and be provided with respectively with each joint piece matched with draw-in groove, the joint piece block in the draw-in groove, and constitute the joint cooperation of cardboard and contact support.
3. Contact system of a diverter switch according to claim 1 or 2, characterized in that: the clamping plate is provided with a clamping hole, and the two movable contact bridges are respectively inserted into the clamping hole and form clamping fit of the clamping plate and the two movable contact bridges.
4. Contact system of a diverter switch according to claim 1 or 2, characterized in that: the middle part of the spring leaf is provided with a positioning groove which is clamped on the spring support and forms the limiting fit of the spring leaf and the spring support, and two ends of the spring leaf are respectively abutted against one side of the magnetic conduction plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120938216.8U CN214476997U (en) | 2021-04-30 | 2021-04-30 | Contact system of change-over switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120938216.8U CN214476997U (en) | 2021-04-30 | 2021-04-30 | Contact system of change-over switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214476997U true CN214476997U (en) | 2021-10-22 |
Family
ID=78180873
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120938216.8U Active CN214476997U (en) | 2021-04-30 | 2021-04-30 | Contact system of change-over switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214476997U (en) |
-
2021
- 2021-04-30 CN CN202120938216.8U patent/CN214476997U/en active Active
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