CN203644673U - Low-voltage vacuum normally-closed direct-current contactor - Google Patents
Low-voltage vacuum normally-closed direct-current contactor Download PDFInfo
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- CN203644673U CN203644673U CN201320739388.8U CN201320739388U CN203644673U CN 203644673 U CN203644673 U CN 203644673U CN 201320739388 U CN201320739388 U CN 201320739388U CN 203644673 U CN203644673 U CN 203644673U
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Abstract
The utility model provides a low-voltage vacuum normally-closed direct-current contactor, and the contactor comprises a main contact binding post (14), a main static contact (13), a main movable contact (12), a movable iron core (8), and a static iron core (1). The contactor is characterized in that the contactor also comprises a spring (18) which is disposed at the top of a push rod (7); the contactor also comprises an outer retaining and absorption coil (5); an inner start coil (4) is disposed in the outer retaining and absorption coil (5); a current directly enables the movable iron core (8) and the static iron core (1) to be absorbed together through the inner start coil (4) during starting; the push rod (7) enables a coil movable contact to be separated with a coil static contact (3); the inner start coil (4) and the outer retaining and absorption coil (5) maintain the absorption of the movable iron core (8) with the static iron core (1); and an upper cavity and a lower cavity are vacuum spaces. The contactor reduces the current, saves energy consumption, reduces the temperature increase, reduces oxidation and burning loss which are caused by arcs, and prolongs the service life of the contact.
Description
Technical field
The utility model relates to the normally closed D.C. contactor of a kind of D.C. contactor, particularly low-voltage vacuum.
Background technology
The effect of D.C. contactor is by DC power supply, as storage battery, with DC load, as direct current machine, disconnects having electric in the situation that, and be a kind of product of maturation.But when existing D.C. contactor work, coil current maintains large electric current required while startup always, causes power consumption large, and temperature rise, can not adapt to temperature rise to require strict workplace.
Summary of the invention
Technical problem to be solved:
When normally closed D.C. contactor work, coil current is large, temperature rise.When open circuit, reduce the electric current by load.
Technical scheme:
In order to realize above function, the utility model provides a kind of low-voltage vacuum normally closed D.C. contactor, comprises main contacts binding post 14, and main contacts binding post 14 bottoms are provided with main fixed contact 13, and main fixed contact 13 belows are provided with initiatively contact 12; Push rod 7 connects moving iron core 8 and static iron core 1 from top to bottom successively, static iron core 1 lower end is fixed in the middle of the bottom plate of horizontal positioned, moving iron core 8 and static iron core 1 are outside equipped with coil rack 9, and internal layer actuating coil 4 is wrapped on coil rack 9, and coil rack 9 tops are provided with fixed head 10;
Described fixed head 10 forms lower chamber with coil housing 6, and the structure that push rod 7, moving iron core 8, static iron core 1, coil rack 9 and internal layer actuating coil 4 form is placed in described lower chamber;
Described fixed head 10 forms upper cavity with contactor main body 16, and main contacts binding post 14, main fixed contact 13 are placed in described upper cavity with the structure that initiatively contact 12 forms;
It is characterized in that: also comprise the spring 18 that is arranged on push rod 7 tops, while energising, because being subject to the moving iron core 8 of spring 18 active forces by jack-up upwards, moving contact 12 is contacted, formation normally off with fixed contact 13;
Also comprise that skin maintains pull-in winding 5, described internal layer actuating coil 4 is in skin maintains pull-in winding 5, and both are in the same direction on coil rack 9; The lower end of described internal layer actuating coil 4 is provided with coil moving contact 2 and coil fixed contact 3, and internal layer actuating coil 4 and skin maintain pull-in winding 5 and coil fixed contact 3 coil moving contacts 2 are connected; When startup, electric current directly makes iron core 8 and static iron core 1 adhesive by internal layer actuating coil 4, after moving iron core 8 and static iron core 1 adhesive, push rod 7 disconnects coil moving contact 2 and coil fixed contact 3, and electric current maintains by internal layer actuating coil 4 and the outer pull-in winding 5 that maintains of series connection the adhesive of moving iron core 8 and static iron core 1;
Described upper cavity and lower chamber are vacuum space.
The part contacting between described fixed head 10, main contacts binding post 14 and contactor main body 16 is respectively equipped with seal member.
Seal member between fixed head 10 and contactor main body 16 is sealing rubber pad 11.
Seal member between main contacts binding post 14 and contactor main body 16 is all O type rubber seal.
Seal member is added with fluid sealant outward.
Beneficial effect:
In the blink of D.C. contactor provided by the invention after startup, coil moving contact 2 and coil fixed contact 3 are disconnected, reduced the electric current by maintaining moving iron core 8 and static iron core 1, saved power consumption, reduced contactor temperature rise.
Contact space keeps vacuum state, make contacting and disconnect with the vacuum of atmospheric isolation in carry out, oxidation and the scaling loss of the electric arc that has reduced generation while disconnection due to contact to contact, has extended useful life of contact.
Accompanying drawing explanation
Fig. 1 is the main pseudosection of the utility model.
Fig. 2 is the left pseudosection of the utility model.
Fig. 3 is the utility model vertical view.
Fig. 4 is that the utility model vacuumizes thin copper pipe and sealing cap and contactor main body part sectioned view.
Fig. 5 is the utility model actuating coil, maintains pull-in winding and coil contact winding diagram.
In figure, 1-static iron core, 2-coil moving contact, 3-coil fixed contact, 4-internal layer actuating coil, 5-skin maintains pull-in winding, 6-coil housing, 7-push rod, 8-moves iron core, 9-coil rack, 10-fixed head, 11-sealing rubber pad, 12-is contact initiatively, the main fixed contact of 13-, 14-main contacts binding post, 16-contactor main body, 17-coil power connector, 18-spring, 19-cap, the thin copper pipe of 20-.
Embodiment
Below in conjunction with accompanying drawing, utility model is further described:
Fig. 1 is schematic diagram of the present utility model
The normally closed D.C. contactor of a kind of low-voltage vacuum, comprises main contacts binding post 14, and main contacts binding post 14 bottoms are provided with main fixed contact 13, and main fixed contact 13 belows are provided with initiatively contact 12; Push rod 7 connects moving iron core 8 and static iron core 1 from top to bottom successively, static iron core 1 lower end is fixed in the middle of the bottom plate of horizontal positioned, moving iron core 8 and static iron core 1 are outside equipped with coil rack 9, and internal layer actuating coil 4 is wrapped on coil rack 9, and coil rack 9 tops are provided with fixed head 10;
Described fixed head 10 forms lower chamber with coil housing 6, and the structure that push rod 7, moving iron core 8, static iron core 1, coil rack 9 and internal layer actuating coil 4 form is placed in described lower chamber;
Described fixed head 10 forms upper cavity with contactor main body 16, and main contacts binding post 14, main fixed contact 13 are placed in described upper cavity with the structure that initiatively contact 12 forms;
It is characterized in that: also comprise the spring 18 that is arranged on push rod 7 tops, while energising, because being subject to the moving iron core 8 of spring 18 active forces by jack-up upwards, moving contact 12 is contacted, formation normally off with fixed contact 13;
Also comprise that skin maintains pull-in winding 5, described internal layer actuating coil 4 is in skin maintains pull-in winding 5, and both are in the same direction on coil rack 9; The lower end of described internal layer actuating coil 4 is provided with coil moving contact 2 and coil fixed contact 3, and internal layer actuating coil 4 and skin maintain pull-in winding 5 and coil fixed contact 3 coil moving contacts 2 are connected; When startup, electric current directly makes iron core 8 and static iron core 1 adhesive by internal layer actuating coil 4, after moving iron core 8 and static iron core 1 adhesive, push rod 7 disconnects coil moving contact 2 and coil fixed contact 3, and electric current maintains by internal layer actuating coil 4 and the outer pull-in winding 5 that maintains of series connection the adhesive of moving iron core 8 and static iron core 1;
Described upper cavity and lower chamber are vacuum space.
As shown in Fig. 1 Fig. 2 Fig. 3, structurally different with the D.C. contactor of prior art is that internal layer actuating coil 4 and skin maintain pull-in winding 5, and makes skin maintain coil fixed contact 3 moving contacts 2 of pull-in winding 5 short circuits.After moving iron core 8 and static iron core 1 adhesive, moving iron core 8 disconnects short circuit by push rod 7 coil moving contact 2 and fixed contact 3, makes to maintain pull-in winding 5 operating currents minimizings by internal layer actuating coil 4 and the skin of series connection, has reduced power consumption, save the energy, reduced temperature rise.
The acting as of seal member make coil housing 6 and internal layer actuating coil 4 and outerly maintain pull-in winding 5 and coil fixed contact 3 moving contacts 2, moving iron core 8, static iron core 1, push rod 7, fixed head 10, space that initiatively contact 12, main fixed contact 13, main contacts binding post 14 and contactor main body 16 form seals completely, then extract the air of contact space by thin copper pipe 20 with vacuum pump, after extracting air completes, cut off and use cap 19 and seal member to seal with special vice flat thin copper pipe folder, making contact space is vacuum.Contact space keeps vacuum state, make contacting and disconnect with the vacuum of atmospheric isolation in carry out, oxidation and the scaling loss of the electric arc that has reduced generation while disconnection due to contact to contact, has extended useful life of contact.
For good sealing effectiveness, between fixed head 10 and contactor main body 16, seal member is sealing rubber pad 11, and between main contacts binding post 14 and contactor main body 16, seal member is all O type rubber seal.
For the effect of good sealing, seal member adopts rubber parts.Outside adds fluid sealant better effects if.Between coil power connector 17 and contactor main body 16, vacuumize between thin copper pipe 20 sealing caps 19 and contactor main body 16 and all seals are all added with fluid sealant.
Claims (5)
1. the normally closed D.C. contactor of low-voltage vacuum, comprises main contacts binding post (14), and main contacts binding post (14) bottom is provided with main fixed contact (13), and main fixed contact (13) below is provided with initiatively contact (12); Push rod (7) connects moving iron core (8) and static iron core (1) from top to bottom successively, static iron core (1) lower end is fixed in the middle of the bottom plate of horizontal positioned, moving iron core (8) and static iron core (1) are outside equipped with coil rack (9), it is upper that internal layer actuating coil (4) is wrapped in coil rack (9), and coil rack (9) top is provided with fixed head (10);
Described fixed head (10) forms lower chamber with coil housing (6), and the structure that push rod (7), moving iron core (8), static iron core (1), coil rack (9) and internal layer actuating coil (4) form is placed in described lower chamber;
Described fixed head (10) forms upper cavity with contactor main body (16), and main contacts binding post (14), main fixed contact (13) are placed in described upper cavity with the structure that initiatively contact (12) form;
It is characterized in that: also comprise the spring (18) that is arranged on push rod (7) top, while energising, because being subject to the moving iron core (8) of spring (18) active force by jack-up upwards, moving contact (12) is contacted, formation normally off with fixed contact (13);
Also comprise that skin maintains pull-in winding (5), described internal layer actuating coil (4) is in skin maintains pull-in winding (5), and both are in the same direction on coil rack (9); The lower end of described internal layer actuating coil (4) is provided with coil moving contact (2) and coil fixed contact (3), and internal layer actuating coil (4) and skin maintain pull-in winding (5) and coil fixed contact (3) coil moving contact (2) series connection; When startup, electric current directly makes iron core (8) and static iron core (1) adhesive by internal layer actuating coil (4), after moving iron core (8) and static iron core (1) adhesive, push rod (7) disconnects coil moving contact (2) and coil fixed contact (3), and the internal layer actuating coil (4) of electric current by series connection and skin maintain pull-in winding (5) and maintain the adhesive of moving iron core (8) and static iron core (1);
Described upper cavity and lower chamber are vacuum space.
2. the normally closed D.C. contactor of a kind of low-voltage vacuum according to claim 1, is characterized in that: the part contacting between described fixed head (10), main contacts binding post (14) and contactor main body (16) is respectively equipped with seal member.
3. the normally closed D.C. contactor of a kind of low-voltage vacuum according to claim 2, is characterized in that: the seal member between fixed head (10) and contactor main body (16) is sealing rubber pad (11).
4. the normally closed D.C. contactor of a kind of low-voltage vacuum according to claim 2, is characterized in that: the seal member between main contacts binding post (14) and contactor main body (16) is all O type rubber seal.
5. the normally closed D.C. contactor of a kind of low-voltage vacuum according to claim 2, is characterized in that: seal member is added with fluid sealant outward.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320739388.8U CN203644673U (en) | 2013-11-20 | 2013-11-20 | Low-voltage vacuum normally-closed direct-current contactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320739388.8U CN203644673U (en) | 2013-11-20 | 2013-11-20 | Low-voltage vacuum normally-closed direct-current contactor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203644673U true CN203644673U (en) | 2014-06-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320739388.8U Expired - Fee Related CN203644673U (en) | 2013-11-20 | 2013-11-20 | Low-voltage vacuum normally-closed direct-current contactor |
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| CN (1) | CN203644673U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104934803A (en) * | 2015-07-10 | 2015-09-23 | 项泽玉 | Intelligent outage lug plate |
| CN106158515A (en) * | 2016-07-15 | 2016-11-23 | 浙江宏舟新能源科技有限公司 | A kind of HVDC relay of band microswitch |
| CN107978489A (en) * | 2017-11-07 | 2018-05-01 | 华为技术有限公司 | A kind of double-coil contactor and circuit control system |
| CN109727817A (en) * | 2017-10-31 | 2019-05-07 | 欧姆龙株式会社 | Electromagnetic relay |
-
2013
- 2013-11-20 CN CN201320739388.8U patent/CN203644673U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104934803A (en) * | 2015-07-10 | 2015-09-23 | 项泽玉 | Intelligent outage lug plate |
| CN106158515A (en) * | 2016-07-15 | 2016-11-23 | 浙江宏舟新能源科技有限公司 | A kind of HVDC relay of band microswitch |
| CN106158515B (en) * | 2016-07-15 | 2019-05-28 | 浙江宏舟新能源科技有限公司 | A kind of high voltage direct current relay with microswitch |
| CN109727817A (en) * | 2017-10-31 | 2019-05-07 | 欧姆龙株式会社 | Electromagnetic relay |
| CN109727817B (en) * | 2017-10-31 | 2020-10-09 | 欧姆龙株式会社 | Electromagnetic relay |
| US10892125B2 (en) | 2017-10-31 | 2021-01-12 | Omron Corporation | Electromagnetic relay |
| CN107978489A (en) * | 2017-11-07 | 2018-05-01 | 华为技术有限公司 | A kind of double-coil contactor and circuit control system |
| CN107978489B (en) * | 2017-11-07 | 2020-01-21 | 华为技术有限公司 | Double-coil contactor and circuit control system |
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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: 20140611 Termination date: 20141120 |
|
| EXPY | Termination of patent right or utility model |