CN202736769U - Anti-heating isolation switch - Google Patents
Anti-heating isolation switch Download PDFInfo
- Publication number
- CN202736769U CN202736769U CN 201220365997 CN201220365997U CN202736769U CN 202736769 U CN202736769 U CN 202736769U CN 201220365997 CN201220365997 CN 201220365997 CN 201220365997 U CN201220365997 U CN 201220365997U CN 202736769 U CN202736769 U CN 202736769U
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- CN
- China
- Prior art keywords
- frustum
- cone
- switch
- contact
- isolation switch
- 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.)
- Expired - Fee Related
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Abstract
The utility model provides an anti-heating isolation switch which comprises a supporting pedestal, insulators, a switch blade, a pull tab and a moving contact. The anti-heating isolation switch is characterized in that a fixed contact is a set of a truncated cone and a truncated cone sleeve which are mutually embedded, wherein the truncated cone is disposed on the upper end surface of the insulator, and the truncated cone sleeve is disposed on the switch blade. The effects of the anti-heating isolation switch are that 1) a phenomenon that the isolation switch is damaged due to overheating of the device caused by contact failure is prevented; and 2) the reliability in power supply and economic benefit as well as social benefic of an enterprise are improved.
Description
Technical field: the utility model relates to the acyclic type isolating switch in the electric primary equipment of a kind of distribution, and particularly a kind of improved reduction contact heating probability increases the anti-heating isolating switch of operational stability simultaneously.
Background technology: the single-pole isolator that uses in the existing distribution line referring to accompanying drawing 1, is by supporting base 1, insulator 2, switch blade 3, draw ring 4, moving contact 5, fixed contact 6 to consist of.The deficiency that this kind single-pole isolator in use exists is: 1; the switch contact contact-making surface is little; in load carrying, often can make apparatus overheat because of loose contact; cause isolating switch to damage; this is because switch contact is by 1 thick about 5mm blade conduction; because contact-making surface only depends on two some contacts; so the contact face is little; in load carrying, often can make apparatus overheat because of loose contact; cause isolating switch to damage phenomenon: 2; need frequent interruption maintenance; the unplanned property of this kind interruption maintenance greatly reduces power supply reliability; increase the maintenance cost of enterprise, reduced economic benefit and the social benefit of enterprise.
Summary of the invention: the purpose of this utility model is, for the acyclic type isolating switch that uses in existing distribution above shortcomings in use, and proposes a kind of contact area that increases, and reduces the anti-heating isolating switch of equipment heating probability of damage.
Can realize the purpose of this utility model by following technical proposals, a kind of anti-heating isolating switch comprises and supports base, insulator, switch blade, draw ring, moving contact, it is characterized in that, fixed contact is the mutually chimeric frustum of a cone, frustum of a cone cover of a cover; The frustum of a cone is located at the insulator upper surface, and the frustum of a cone is set on the switch blade.
For making frustum of a cone demolition, installation convenient, be provided with a standing screw at frustum of a cone bottom face.
For making the switch blade firmly stable in operation, between other switch two blades of moving contact, be provided with the U-shaped piece, two terminations of U-shaped piece are separately fixed on two blades.
Effect of the present utility model is: 1, the switch contact contact-making surface is large, the electric current that carries is large, in on-load or not load carrying, can not make apparatus overheat because of loose contact no matter be, the phenomenon that causes isolating switch to damage occurs, this is that this device improves fixed contact, with a cover frustum of a cone, frustum of a cone cover has been replaced existing fixed contact, the area that contacts between the frustum of a cone and the frustum of a cone cover greatly increases with the Area Ratio that the switch blade contacts with existing blade type fixed contact, this so that the magnitude of current that carries greatly increase, so the phenomenon that makes apparatus overheat and cause isolating switch to damage because of loose contact can not occur; 2, economic benefit and the social benefit of power supply reliability and enterprise have been improved, because after this device makes fixed contact the structure of a cover frustum of a cone, frustum of a cone cover into, or else the phenomenon that makes apparatus overheat and cause isolating switch to damage because of loose contact can appear, so, no longer need unplanned property interruption maintenance.
Below in conjunction with embodiment and accompanying drawing the utility model is further set forth:
Description of drawings:
Accompanying drawing 1 is the structural representation of existing single-pole isolator.
Accompanying drawing 2 is structural representation of the present utility model;
Accompanying drawing 4 is the structural representation of U-shaped piece in the utility model.
Embodiment:
Referring to accompanying drawing 2, a kind of anti-heating isolating switch, it is by supporting base 1, insulator 2, switch blade 3, draw ring 4, moving contact 5, fixed contact 6, U-shaped piece 7 to form; Wherein fixed contact 6 is made of the frustum of a cone 61, frustum of a cone cover 62, and is mutually chimeric between the frustum of a cone 61 and the frustum of a cone cover 62.The frustum of a cone 61 is located at insulator 2 upper surfaces, and frustum of a cone cover 62 is located on the switch blade 3.The material of the frustum of a cone 61 and frustum of a cone cover 62 is copper.For making the frustum of a cone 61 demolition, installation convenient, be provided with a standing screw 8 at the frustum of a cone 61 bottom faces, the frustum of a cone 61 can be fixed on insulator 2 upper surfaces by nut.For making switch blade 3 firmly stable in operation, between two blades of the switch blade 3 by the moving contact 5, be provided with U-shaped piece 7, two terminations of U-shaped piece 7 are separately fixed on two blades.
Claims (3)
1. an anti-heating isolating switch comprises and supports base, insulator, switch blade, draw ring, moving contact, it is characterized in that, fixed contact is the mutually chimeric frustum of a cone, frustum of a cone cover of a cover; The frustum of a cone is located at the insulator upper surface, and the frustum of a cone is set on the switch blade.
2. by anti-heating isolating switch claimed in claim 1, it is characterized in that, be provided with a standing screw at frustum of a cone bottom face.
3. by claim 1 or 2 described anti-heating isolating switches, it is characterized in that be provided with the U-shaped piece between other switch two blades of moving contact, two terminations of U-shaped piece are separately fixed on two blades.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220365997 CN202736769U (en) | 2012-07-19 | 2012-07-19 | Anti-heating isolation switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220365997 CN202736769U (en) | 2012-07-19 | 2012-07-19 | Anti-heating isolation switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202736769U true CN202736769U (en) | 2013-02-13 |
Family
ID=47662442
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220365997 Expired - Fee Related CN202736769U (en) | 2012-07-19 | 2012-07-19 | Anti-heating isolation switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202736769U (en) |
-
2012
- 2012-07-19 CN CN 201220365997 patent/CN202736769U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130213 Termination date: 20160719 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |