CN202487501U - Contactor with service life capable of being prolonged - Google Patents
Contactor with service life capable of being prolonged Download PDFInfo
- Publication number
- CN202487501U CN202487501U CN2012200476993U CN201220047699U CN202487501U CN 202487501 U CN202487501 U CN 202487501U CN 2012200476993 U CN2012200476993 U CN 2012200476993U CN 201220047699 U CN201220047699 U CN 201220047699U CN 202487501 U CN202487501 U CN 202487501U
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- China
- Prior art keywords
- contact
- moving
- contact head
- contactor
- arc
- 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 - Lifetime
Links
- 230000002035 prolonged effect Effects 0.000 title abstract 4
- 238000010891 electric arc Methods 0.000 claims abstract description 14
- 230000003068 static effect Effects 0.000 claims abstract description 14
- 229910001316 Ag alloy Inorganic materials 0.000 claims abstract description 5
- 238000010791 quenching Methods 0.000 claims description 13
- 230000000171 quenching effect Effects 0.000 claims description 13
- 229910000906 Bronze Inorganic materials 0.000 claims description 7
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 7
- 239000010974 bronze Substances 0.000 claims description 7
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 claims description 7
- 229910052698 phosphorus Inorganic materials 0.000 claims description 7
- 239000011574 phosphorus Substances 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 6
- SBYXRAKIOMOBFF-UHFFFAOYSA-N copper tungsten Chemical compound [Cu].[W] SBYXRAKIOMOBFF-UHFFFAOYSA-N 0.000 claims description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 abstract description 2
- 238000005299 abrasion Methods 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 44
- 229910052742 iron Inorganic materials 0.000 description 22
- 238000000034 method Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 229910052709 silver Inorganic materials 0.000 description 3
- 239000004332 silver Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000000737 periodic effect Effects 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008033 biological extinction Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000033001 locomotion Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The utility model discloses a contactor with service life capable of being prolonged, which comprises an electromagnetic system, a contact head system and an arc-extinguishing system, wherein the contact head system comprises a moving contact head and a static contact head, the moving contact head comprises a moving arc-extinguishing contact head (5-1) and a moving main contact head (5-2) which is connected with the moving arc-extinguishing contact head (5-1) in parallel, and the static contact head comprises a static arc-extinguishing contact head (8-1) and a static main contact head (8-2). The static arc-extinguishing contact head (8-1) and the static main contact head (8-2) are connected in parallel or share the same static contacting board (9), and the opening distance between the moving arc-extinguishing contact head (5-1) and the static arc-extinguishing contact head (8-1) is shorter than that between the moving main contact head (5-2) and the static main contact head (8-2). According to the contactor with service life capable of being prolonged, service life of the contactor is prolonged, and maintenance work load of the contactor is reduced. Due to the facts that main contact heads do not produce electric arc and electric abrasion does not occur, thickness of silver alloy is greatly reduced and cost is saved.
Description
Technical field
The utility model relates to a kind of contactor, is specifically related to a kind of contactor that increases the service life.
Background technology
At present the arc quenching method of contactor is modes such as metal gate sheet arc extinguishing, magnetic quenching, vacuum extinction, though these arc quenching methods all are arc quenching methods preferably, can't stop the electrical wear of contact.The contactor of big electric current particularly, because electrical wear is more serious, so electric life is all not long, under the mechanical endurance of contactor body also very long situation, contactor can not use, and causes the waste of contactor body.In order to prolong the useful life of contactor, producer generally adopts the method for changing probe of contactor, and changing contact will dismantle the connection lead on the one hand; Cumbersome; Contact is changed the restriction of the examined equipment in back on the other hand, can not be with its parameter adjustment to optimum state, so effect is also not ideal.
The utility model content
To the deficiency that prior art exists, the utility model purpose provides a kind of contactor that increases the service life.
To achieve these goals, the utility model is to realize through following technical scheme:
The utility model comprises electromagnetic system, contact system and arc quenching system; Contact system comprises moving contact and fixed contact; Moving contact comprises moving arcing contact and the moving main contact parallelly connected with moving arcing contact; Fixed contact comprises quiet arcing contact and quiet main contact, the parallel with one another or shared same static contact panel of quiet arcing contact and quiet main contact; Opening apart from less than the distance of moving between main contact and the quiet main contact of opening between moving arcing contact and the quiet arcing contact.
The utility model arcing contact is connected prior to main contact, and the back is in the main contact disjunction, and electric arc produces on arcing contact, does not produce electric arc on the main contact.The electric arc that produces on the arcing contact is extinguished by arc quenching system, and arc quenching system adopts traditional arc quenching method.
Traditional contact should guarantee the arc extinguishing ability, guarantees making capacity again.And the utility model is these the two kinds of functional separations with existing main contact.Arcing contact is used for arc extinguishing, and main contact is used for connecting.Arcing contact design the time need consider breaking capacity and with the cooperation (cooperation of arcing contact and arc quenching system is a prior art, repeats no more here) of arc quenching system, also considered is changed conveniently, and need not consider temperature rise.Main contact is only considered making capacity and temperature rise when design, and need not consider the arc extinguishing problem.Because main contact does not produce electric arc, thereby has improved the useful life of contactor.
The utility model can be according to the frequency of operation of contactor, and the periodic replacement arcing contact when changing arcing contact, need not dismounting and connects lead, and the main contact parameter does not change, so contactor need not to test again, has reduced the workload that contactor is safeguarded.The periodic replacement arcing contact has just further improved the useful life of contactor.
Above-mentioned moving arcing contact what touch that bridge adopts is elasticity phosphorus bronze sheet preferably, the material that adopt the contact of moving arcing contact is the copper-tungsten of anti-electric arc.Because phosphorus bronze sheet is just connected big electric current in several milliseconds of connecting with moment of disjunction, so phosphorus bronze sheet can not produce high heat, just normal heating and do not influence elasticity, the making of like this moving arcing contact is just fairly simple, and installation and replacing are also very convenient.The useful life that the contact of moving arcing contact adopts the copper-tungsten of anti-electric arc also to improve contactor.
Above-mentioned moving main contact what touch that bridge adopts is copper plate, the material that adopt the contact of moving main contact is the silver alloy that conducts electricity very well.
The utility model not only can improve the useful life of contactor, and can reduce the maintenance workload of contactor; Because the main contact of the utility model does not produce electric arc, thus do not have electrical wear, so silver alloy thickness can significantly reduce, thereby practiced thrift cost.
Description of drawings
Fig. 1 is the front view of the utility model one embodiment;
Fig. 2 is the right view of Fig. 1;
Fig. 3 removes the vertical view behind the arc-extinguish chamber for Fig. 1.
Each label among the figure: arc-extinguish chamber 1, upper casing 2, lower casing 3, moving part 4, moving arcing contact 5-1, moving main contact 5-2; Sensitive switch 6, contact pressure spring 7, quiet arcing contact 8-1, quiet main contact 8-2, static contact panel 9; Arm 10, moving iron 11, quiet iron 12, coil 13, counter-force spring 14.
Embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose and be easy to understand understanding with effect, below in conjunction with embodiment, further set forth the utility model.
Referring to Fig. 1, Fig. 2 and Fig. 3, existing is example with an one pole contactor, and contactor comprises housing and the electromagnetic system, contact system and the arc quenching system that are installed in the housing.Electromagnetic system, contact system and arc quenching system all are sealed in the housing, can accomplish dustproof fully.
In the present embodiment; Housing comprises arc-extinguish chamber 1, upper casing 2 and the lower casing 3 that is installed in the top; Be provided with binding post (not marking among the figure) in the outside of upper casing 2, lower casing 3 bottoms are through bolster (not marking among the figure) sealing, and present embodiment adopts the damping rubber gasket sealing; Upper casing 2 seals through dust guard with arc-extinguish chamber 1, and present embodiment adopts the sealing of case dustproof gasket.
In the present embodiment; Contact system comprises moving part 4, be installed in moving part 4 upper ends moving arcing contact 5-1 and moving main contact 5-2 parallelly connected with moving arcing contact 5-1, be arranged on moving part 4 both sides sensitive switch 6 (connect normally opened contact, be installed on the upper casing 2), be arranged on moving arcing contact 5-1 and move contact pressure spring 7 and quiet arcing contact 8-1 and the quiet main contact 8-2 above the main contact 5-2.Opening apart from less than the distance of moving between main contact 5-2 and the quiet main contact 8-2 of opening between moving arcing contact 5-1 and the quiet arcing contact 8-1.Moving arcing contact 5-1 and moving main contact 5-2 can realize reliable parallel connection under the effect of contact pressure spring 7.
In the present embodiment, the shared same static contact panel 9 of quiet arcing contact 8-1 and quiet main contact 8-2, static contact panel 9 is fixed on the upper casing 2.
In the present embodiment, on lower casing 3, be provided with pillar (not marking among the figure), sensitive switch 6 supports the location through pillar.Be provided with two arms 10 with sensitive switch 6 corresponding positions on the moving part 4; Make moving part 4 when moving up and down, can touch sensitive switch 6; Make its contact be in closure state; And sensitive switch 6 and main contact (moving main contact 5-2 with quiet main contact 8-2 disconnection and closure) can synchronization actions, and sensitive switch 6 is connected with binding post through lead (not drawing among the figure).
Wherein, moving arcing contact 5-1 what touch that bridge adopts is elasticity phosphorus bronze sheet preferably, the material that adopt the contact of moving arcing contact 5-1 is the copper-tungsten of anti-electric arc, has improved the useful life of contactor.
Wherein, moving main contact 5-2 what touch that bridge adopts is copper plate, the material that adopt the contact of moving main contact 5-2 is the silver alloy that conducts electricity very well.
In the present embodiment; Electromagnetic system comprise the E font that is fixed on moving part 4 belows moving iron 11, be installed in the lower casing 3 with the quiet iron 12 of the moving iron 11 corresponding E fonts of E font and be fixed on the coil 13 on the quiet iron 12 of E font, draw wiring through lug plate (not drawing among the figure).The centre of the quiet iron 12 of E font and the moving iron 11 of E font is equipped with counter-force spring 14; Counter-force spring 14 can be so that in the time of quiet iron 12 adhesives of the moving iron of E font 11 and E font, and the elastic force that the moving iron 11 of E font overcomes counter-force spring 14 counter-force spring 14 when separating gives the elastic force of the moving iron 11 of E font.The moving iron 11 of E font is identical with the distance of corresponding sensitive switch 6 with the distance and the arm 10 of the quiet iron 12 of E font.
When power supply is given coil 13 energisings through aforesaid lug plate; The quiet iron 12 of E font produces electromagnetic attraction; The moving iron 11 of E font overcomes the elastic force of counter-force spring 14, to quiet iron 12 motions of E font, because the moving iron 11 of E font is fixedly connected with moving part 4; So moving part 4 is followed the moving iron 11 of E font and is moved downward; Again because moving arcing contact 5-1 and moving main contact 5-2 are installed in the upper end of moving part 4, and opening apart from less than the distance of opening between moving main contact 5-2 and the quiet main contact 8-2 between moving arcing contact 5-1 and the quiet arcing contact 8-1, contact with quiet arcing contact 8-1 so move arcing contact 5-1 elder generation.Since moving arcing contact 5-1 what touch that bridge adopts is elasticity phosphorus bronze sheet preferably, under the suction-combining force effect of contactor, phosphorus bronze sheet produces deformation, can not stop moving main contact 5-2 and quiet main contact 8-2 closure, but electric arc is born by arcing contact.On moving part 4, be respectively equipped with arm 10 with sensitive switch 6 corresponding positions, when moving part 4 moves to certain position, sensitive switch 6 and main contact synchronization action; Arm 10 touches sensitive switch 6; Make the closing of contact of sensitive switch 6, control circuit external, and moving main contact 5-2 and quiet main contact 8-2 contact thereby sensitive switch 6 connects binding post through lead; The closing of contact, thereby control load.
When coil 13 outages, the electromagnetic attraction of the quiet iron 12 of E font disappears, and relies on the reaction force of counter-force spring 14; Make the moving iron 11 of E font separate with the quiet iron 12 of E font, moving part 4 moves upward, because moving main contact 5-2 and quiet main contact 8-2 break off earlier; Break off behind moving arcing contact 5-1 and the quiet arcing contact 8-1; So electric arc still bears (to that is to say no matter be that contactor is connected or during disjunction, the electric arc of generation is born by arcing contact, main contact does not produce electric arc by arcing contact.), the contact is broken off, and stops the control to load, and the contact of sensitive switch 6 becomes disconnection by closure simultaneously, thereby breaks off outside circuit control.
Because will consider electrical wear, its silver layer is thicker during fabrication for traditional main noddle on contactor, and the consumption silver amount of the triple pole contactor of a 50A is about about 15g, and silver-colored valency calculates by per 6000 yuan/KG, needs 90 yuan.
The average unit cost increase of a 50A triple pole contactor installation arcing contact is about about 12 yuan, and main contact is that its silver thickness can reduce 70% because do not consider arc extinguishing and electrical wear in manufacturing, can reduce 90 yuan * 70%=63 unit with silver-colored cost.So the contactor manufacturing cost can reduce 63 yuan-12 yuan=51 yuan.The electric current of contactor is big more, and the cost of saving is many more.China needs the above contactor of 50A to be about 1,000 ten thousand every year, by 51 yuan of calculating of every average saving, can practice thrift 1,000 ten thousand * 51 yuan=5.1 hundred million.
More than show and described basic principle of the utility model and the advantage of principal character and the utility model.The technical staff of the industry should understand; The utility model is not restricted to the described embodiments; The principle of describing in the foregoing description and the specification that the utility model just is described; Under the prerequisite that does not break away from the utility model spirit and scope, the utility model also has various changes and modifications, and these variations and improvement all fall in the utility model scope that requires protection.The utility model requires protection range to be defined by appending claims and equivalent thereof.
Claims (3)
1. the contactor that can increase the service life comprises electromagnetic system, contact system and arc quenching system, and said contact system comprises moving contact and fixed contact, it is characterized in that,
Said moving contact comprises moving arcing contact (5-1) and the moving main contact (5-2) parallelly connected with moving arcing contact (5-1); Said fixed contact comprises quiet arcing contact (8-1) and quiet main contact (8-2), said quiet arcing contact (8-1) and the parallel with one another or shared same static contact panel of quiet main contact (8-2) (9);
Opening apart from less than the distance of opening between moving main contact (5-2) and the quiet main contact (8-2) between said moving arcing contact (5-1) and the quiet arcing contact (8-1).
2. the contactor that increases the service life according to claim 1 is characterized in that, said moving arcing contact (5-1) what touch that bridge adopts is elasticity phosphorus bronze sheet preferably, the material that adopt the contact of moving arcing contact (5-1) is the copper-tungsten of anti-electric arc.
3. the contactor that increases the service life according to claim 1 is characterized in that, said moving main contact (5-2) what touch that bridge adopts is copper plate, the material that adopt the contact of moving main contact (5-2) is the silver alloy that conducts electricity very well.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200476993U CN202487501U (en) | 2012-02-15 | 2012-02-15 | Contactor with service life capable of being prolonged |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200476993U CN202487501U (en) | 2012-02-15 | 2012-02-15 | Contactor with service life capable of being prolonged |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202487501U true CN202487501U (en) | 2012-10-10 |
Family
ID=46961905
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200476993U Expired - Lifetime CN202487501U (en) | 2012-02-15 | 2012-02-15 | Contactor with service life capable of being prolonged |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202487501U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102568936A (en) * | 2012-02-15 | 2012-07-11 | 南京全宁电器有限公司 | Contactor capable of having service life prolonged |
| CN102945772A (en) * | 2012-10-24 | 2013-02-27 | 北京八大处奥博科技发展有限公司 | Electromagnetic power supply master switch for vehicle |
| CN107851544A (en) * | 2016-01-27 | 2018-03-27 | 富士电机机器制御株式会社 | Contact making device and the electromagnetic contactor using the contact making device |
-
2012
- 2012-02-15 CN CN2012200476993U patent/CN202487501U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102568936A (en) * | 2012-02-15 | 2012-07-11 | 南京全宁电器有限公司 | Contactor capable of having service life prolonged |
| CN102945772A (en) * | 2012-10-24 | 2013-02-27 | 北京八大处奥博科技发展有限公司 | Electromagnetic power supply master switch for vehicle |
| CN102945772B (en) * | 2012-10-24 | 2015-08-19 | 北京八大处奥博科技发展有限公司 | electromagnetic power main switch for vehicle |
| CN107851544A (en) * | 2016-01-27 | 2018-03-27 | 富士电机机器制御株式会社 | Contact making device and the electromagnetic contactor using the contact making device |
| CN107851544B (en) * | 2016-01-27 | 2019-06-07 | 富士电机机器制御株式会社 | Contact making device and the electromagnetic contactor for using the contact making device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121010 |
|
| CX01 | Expiry of patent term |