CN87203775U - Ac contactor with self loop current feedback and self extinguishing type extinction of arc - Google Patents
Ac contactor with self loop current feedback and self extinguishing type extinction of arc Download PDFInfo
- Publication number
- CN87203775U CN87203775U CN 87203775 CN87203775U CN87203775U CN 87203775 U CN87203775 U CN 87203775U CN 87203775 CN87203775 CN 87203775 CN 87203775 U CN87203775 U CN 87203775U CN 87203775 U CN87203775 U CN 87203775U
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- CN
- China
- Prior art keywords
- contact
- contactor
- arc
- ring type
- self
- 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.)
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- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The utility model relates to an improvement of AC contactor, belonging to the field of electric switch. The essencial point lies in that a static contact or a movable contact comprises a ring type contact with a certain outer diameter whose size is determined by the electric current density value of the contact surface of the contact; the electric current density value is less than or is equal to the electric current density value which is permitted by contact material; the other static contact or moving contact is provided with an ordinary contact operating form which can also be a ring type contact operating form; the ring type contact can be annular as well as incompletely annular; the ring type contact can be a single ring as well as internal and external dual rings. The utility model has the advantages of great efficiency of arc-extinguishing, high reliability and avoidance of harmful electric arc suffer of people.
Description
Belong to the electric switch field.
Contactor is a kind of automatic electromagnetic switch.It is divided into alternating current-direct current two classes.It makes contact closure and disjunction by the release under adhesive under the magneticaction and the effect of counteracting spring power, causes switching on and off of circuit.It is made of electromagnetic system, contact system (dynamic and static contact), arc-extinguish chamber and other parts (comprising antagonistic spring, contact pressure reed, buffer spring, short-circuited conducting sleeve, base, binding post).Because the pressure of the contact pressure reed that the spring effect relies on is inhomogeneous slightly, then three simultaneities that contact contact just have deviation, electric arc just occurs and burn trace.And arc-extinguish chamber adopts ceramic arc suppressing cover or arc-chute usually, and such arc-extinguishing unit arc extinguishing usefulness is low.
The utility model is the improvement to A.C. contactor.Structure of contact terminal by changing A.C. contactor is to reach the purpose that improves its arc extinguishing usefulness.
Key of the present utility model is that the moving contact or the fixed contact of A.C. contactor is the ring type contact form.The external diameter size of ring type contact is by the current density value decision of contact-making surface, and this current density value is not more than the current density value that contact material allows.Another fixed contact or moving contact are common formula contact forms, also can be the ring type contact forms.The ring type contact can be the domain, also can be missing link.The ring type contact can be a monocycle, also can be inside and outside dicyclo.
Contact material available silver alloy or copper.
The utility model is according to the design of the character of circulation in the electromagnetic theory.
Ring shaped conductor makes variable-current form the annular electro a fluid stream, thereby the annular electro magnetic field that causes having the same frequency response, the variation electromagnetic field that this variable-current produces, the maximum in magnetic field just changes in the strength of ring shaped conductor outer surface currents again, it plays rapid diffusion and moves for effect, can have similar synchronous switching off or title not to have electric arc and cut-off usefulness.Like this, the annular electro a fluid stream is fed back to the annular electro magnetic field of restriction mutually, and they are arranged by the connection of A.C. contactor button and shutoff all, and the variation electromagnetic field of variable-current generation at this moment just can arc extinguishing.
Accompanying drawing 1 is the structure of contact terminal vertical section schematic diagram of A.C. contactor.1, movable contact plate, 2, inside and outside dicyclic moving contact, 3, quiet terminal block, 4,5 inside and outside dicyclic fixed contacts.
The utility model embodiment sees accompanying drawing 2.It is the structure of contact terminal vertical section schematic diagram of A.C. contactor.6, be moving contact, external diameter φ 8, internal diameter φ 4,7, fixed contact, external diameter φ 12, internal diameter φ 9, the electrical distance of dynamic and static contact are 6 centimetres.Service condition: rated current: 40A, rated voltage is below 500 volts.
The utility model arc extinguishing usefulness is big.
Claims (3)
1, by electromagnetic system, contact system, antagonistic spring: the A.C. contactor that contact pressure reed, buffer spring, short-circuited conducting sleeve, base, binding post constitute, it is characterized in that moving contact or fixed contact in the contact system are made of the ring type contact, another fixed contact or moving contact are common formula contact form.
2, A.C. contactor as claimed in claim 1 is characterized in that the dynamic and static contact of contact system is the ring type contact form,
3, A.C. contactor as claimed in claim 2 is characterized in that the dynamic and static contact in the contact system is inside and outside dicyclic contact form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87203775 CN87203775U (en) | 1987-03-15 | 1987-03-15 | Ac contactor with self loop current feedback and self extinguishing type extinction of arc |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87203775 CN87203775U (en) | 1987-03-15 | 1987-03-15 | Ac contactor with self loop current feedback and self extinguishing type extinction of arc |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN87203775U true CN87203775U (en) | 1988-08-03 |
Family
ID=4819727
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 87203775 Withdrawn CN87203775U (en) | 1987-03-15 | 1987-03-15 | Ac contactor with self loop current feedback and self extinguishing type extinction of arc |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN87203775U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102436975A (en) * | 2011-10-06 | 2012-05-02 | 武汉长海电气科技开发有限公司 | Bipolar DC contactor |
-
1987
- 1987-03-15 CN CN 87203775 patent/CN87203775U/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102436975A (en) * | 2011-10-06 | 2012-05-02 | 武汉长海电气科技开发有限公司 | Bipolar DC contactor |
| CN102436975B (en) * | 2011-10-06 | 2014-04-30 | 武汉长海电气科技开发有限公司 | Bipolar DC contactor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C53 | Correction of patent for invention or patent application | ||
| CB02 | Change of applicant information |
Co-applicant after: Yu Yongxue Co-applicant after: Yu Xifeng Co-applicant after: Wang Taishi Co-applicant after: Cong Wei Co-applicant after: Li Yefan |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: CO-APPLICANT TO: YU YONGXUE; YU XIFENG; WANG TAISHI; CONG WEI; LI YEFAN |
|
| C15 | Extension of patent right duration from 15 to 20 years for appl. with date before 31.12.1992 and still valid on 11.12.2001 (patent law change 1993) | ||
| RN01 | Renewal of patent term | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |