CN103996568A - Contactor - Google Patents
Contactor Download PDFInfo
- Publication number
- CN103996568A CN103996568A CN201410021227.4A CN201410021227A CN103996568A CN 103996568 A CN103996568 A CN 103996568A CN 201410021227 A CN201410021227 A CN 201410021227A CN 103996568 A CN103996568 A CN 103996568A
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- Prior art keywords
- contact
- iron core
- insulation crust
- contactor
- lower fixed
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Abstract
The invention discloses a contactor which is long in service life, safe and reliable. The contactor comprises an insulating housing, a lower fixed iron core, an upper movable iron core, a lower lever mechanism and an upper lever mechanism, wherein the lower fixed iron core is mounted at the bottom of an inner cavity of the insulating housing; a coil is arranged on the lower fixed iron core; the upper movable iron core is mounted on the lower lever mechanism; a return iron core spring is arranged at one end, provided with the coil, of the lower fixed iron core; the lower fixed iron core is connected with the upper movable iron core by the return iron core spring; the upper lever mechanism is connected with the lower lever mechanism; an upper contact is arranged on the upper lever mechanism; a lower contact corresponding to the upper contact is arranged on the inner cavity of the insulating housing; a plurality of contact lead connectors connected with the upper contact and the lower contact are arranged outside the insulating housing; and an oil filler hole is formed at the top end of the insulating housing. The contactor has the benefits that insulating oil is filled from the oil filler hole, so that no spark is generated during contact actuation, the contactor is not oxidized or damaged easily, and can be used permanently, and the service life of the contactor is prolonged greatly.
Description
Technical field
The present invention relates to distribution correlative technology field, refer in particular to a kind of contactor.
Background technology
Contactor is divided into A.C. contactor (voltage AC) and D.C. contactor (voltage DC), and it is applied to electric power, distribution and electricity consumption.Contactor broadly refers in industrial electro and utilizes coil current flowing to produce magnetic field, makes contact closure, to reach the electrical equipment of control load.In electrotechnics; because can fast shut-off exchange with direct current major loop and can connect continually and the device of large current control circuit; so often apply to motor as control object; also can be used as controlling the electrical loads such as shop equipment, electric heater, machine-tool and various kinds electric power unit; circuit can not only be connected and cut off to contactor, but also have the effect of low-voltage release guard.Contactor control capacity is large, is applicable to frequent operation and far distance controlled.It is one of critical elements in automatic control system.
The operation principle of contactor is: when after contactor coil energising, coil current can produce magnetic field, and the magnetic field of generation makes fixed core produce the moving iron core of electromagnetic attraction attraction, and drive A.C. contactor point to move, normally-closed contact disconnects, normally opened contact closure, and both link.In the time of coil blackout, electromagnetic attraction disappears, and armature discharges under the effect of retracting spring, and contact is restored, and normally opened contact disconnects, normally-closed contact closure.The operation principle of D.C. contactor is somewhat similar with the principle of temperature switch.Existing contactor, under long-term work, can produce spark, easily oxidation, easily damage when adhesive, the contact of contactor can not forever be used, and has shortened greatly the useful life of contactor.
Chinese patent Granted publication number: CN203103227U, July 31 2013 Granted publication day, a kind of contactor with dust cap is disclosed, contactor is provided with through hole, the cover plate of dust cap is provided with first, second, third baffle plate, first, second, third cavity, the first positioning bar and the second positioning bar, wherein three of the second cavity adjacent walls are followed successively by the first baffle plate, the 3rd baffle plate, second baffle, the 4th side at the second cavity is provided with clamping projection, clamping raises into up big and down small shape, is provided with spacing gusset at the 3rd baffle plate top; The first positioning bar is positioned at the first cavity, and the second positioning bar is positioned at the 3rd cavity, and contactor is provided with the first and second pits, the first and second shackle member; First, second positioning bar is against respectively on the hole wall of first, second pit, and spacing gusset inserts the first shackle member of contactor, and clamping projection snaps in the second shackle member of contactor.The weak point of this invention is, this contactor, after long-term work, can easily produce spark when the contact adhesive of contactor, easily oxidation and easily damaging of the contact that simultaneously causes contactor, the contact of contactor can not forever be used, shortened greatly the useful life of contactor.
Summary of the invention
There is above-mentioned deficiency in order to overcome in prior art in the present invention, a kind of contactor of safe and reliable and long service life is provided.
To achieve these goals, the present invention is by the following technical solutions:
A kind of contactor, comprise insulation crust, lower fixed core, upper moving iron core, lower leverage and upper lever mechanism, described lower fixed core, lower fixed core, upper moving iron core, lower leverage and upper lever mechanism are installed in the inside of insulation crust, described lower fixed core is arranged on the intracavity bottom of insulation crust, described lower fixed core is provided with coil, described upper moving iron core is arranged on lower leverage, one end that described lower fixed core is provided with coil place is provided with return iron core spring, described lower fixed core is connected with upper moving iron core by return iron core spring, described upper lever mechanism is connected with lower leverage, described upper lever mechanism is provided with upper contact, the inner chamber of described insulation crust is provided with the lower contact corresponding with upper contact, the outside of described insulation crust is provided with some for connecting the contact leads joint of upper contact and lower contact, the top of described insulation crust is provided with oil filler point.
This contactor is in the time of coil electricity, because coil is placed on lower fixed core, so producing magnetic field, inhales and upper moving iron core lower fixed core, upper moving iron core action drives lower leverage, and upper lever mechanism is connected with lower leverage, while upper lever mechanism action in lower leverage motion, so the lower contact closure on upper contact and the insulation crust in upper lever mechanism; In the time of coil losing electricity, by the effect of return iron core spring, moving iron core is separated with lower fixed core, thereby by the interlock of lower leverage and upper lever mechanism, upper contact and lower contact are disconnected.This contactor injects insulating oil by oil filler point in the inner chamber of this insulation crust, whole contactor is worked under the long-term lubricated state of insulating oil, when upper contact and lower contact adhesive, can not produce spark, security performance is high, so upper contact and lower contact are just not easy to be oxidized, is also not easy to damage simultaneously, good reliability, upper contact and the lower contact of contactor can forever be used, compare with common contactor, extended greatly the useful life of contactor.
As preferably, the intracavity bottom of described insulation crust is provided with the pedestal for lower fixed core is installed, and the cross section of described lower fixed core is U-shaped, and described coil is arranged on one end of lower fixed core, described pedestal is provided with coil lead joint, described coil lead joint connecting wire circle.Workload simple in structure, easy for installation, effectively to reduce a staff, enhances productivity, cost-saving.
As preferably, described lower leverage comprises sheer pole, upper moving iron core and lower connecting block, one end of described sheer pole is arranged in the inner chamber of insulation crust by lower lever alignment pin, the other end of described sheer pole is fixedly connected with upper moving iron core by lateral pin, the cross section of described moving iron core is U-shaped, the position of described moving iron core is corresponding with the position of lower fixed core, one end of described moving iron core is connected with lower fixed core by return iron core spring, and described lower connecting block is arranged on sheer pole and is provided with one end of moving iron core and opposing with upper moving iron core.Utilize lever principle to drive moving iron core to make it and the use that complements one another of lower fixed core, reduce the effect of power, be convenient to moving iron core and the suction of lower fixed core with separate.
As preferably, described upper lever mechanism comprises cross tube, upper contiguous block and contact bar, one end of described cross tube is arranged on by upper lever alignment pin in the inner chamber of insulation crust, one end of the other end connecting terminal bar of described cross tube, described upper contact is arranged on the other end of contact bar, and described upper contiguous block is arranged on cross tube and by upper and lower lever connecting pin and is connected with lower connecting block.Upper lever mechanism, by the drive of lower leverage, also moves thereupon together, thereby makes closure and the disconnection of upper contact and lower contact, utilizes lever principle can either reduce the effect of power, can reasonably utilize again its facility above displacement, simple in structure.
As preferably, in described insulation crust and be placed between upper lever mechanism and lower leverage and be provided with insulating barrier, the centre of described insulating barrier is provided with is convenient to the through hole that upper lever mechanism is connected with lower leverage, described lower contact is arranged on insulating barrier, described contact leads jiont treatment is at the outward flange of insulating barrier, and described upper contact is all connected with contact leads joint by flexible conductor with lower contact.Can facilitate on the one hand the action of upper lever mechanism by the design of insulating barrier by through-hole structure, can effectively locate on the other hand the position of upper contact and lower contact, facilitate disconnection and closure between upper contact and lower contact.
As preferably, a flexible conductor part for described connection upper contact is placed in the inner chamber of insulation crust, another part plastic packaging is connected in insulating barrier and with contact leads joint, and the whole plastic packagings of flexible conductor of described connection lower contact are connected in insulating barrier and with contact leads joint.The safety and reliability of flexible conductor can be effectively improved, the useful life of this contactor can be indirectly improved.
As preferably, described contact bar is flexibly connected with cross tube, and one end that described contact bar connects cross tube is provided with pressure contact spring, and described cross tube is provided with and the guide vane end stop of pressing contact spring to match.By pressing contact spring design can improve the contact performance of upper contact and lower contact, in upper contact and lower contact closure, effectively prevent that between upper contact and lower contact, the effect because of insulating oil causes loose contact, improve the sensitivity of this contactor.
As preferably, the cross section of described insulation crust is convex, described insulation crust is divided into upper and lower two parts by insulating barrier, its middle and upper part is divided into contact cavities, bottom is divided into iron core chamber, and contact cavities is communicated with iron core chamber by the through hole on insulating barrier, and described oil filler point is placed in the center, top of contact cavities, in described oil filler point, be provided with O RunddichtringO, described oil filler point is matched its sealing is fastenedly connected with O RunddichtringO by sealing bolt.Match and make oil filler point oil-proof with O RunddichtringO by sealing bolt, and whole insulation crust has the effect of dustproof, damp proof, anti-circuit corruption, make whole contactor coefficient of safety high, and can effectively extend the useful life of contactor.
As preferably, the bottom even of described insulation crust is distributed with some contactor installing holes.The installation of being convenient to contactor is fixed.
The invention has the beneficial effects as follows: inject insulating oil by oil filler point, this contactor is worked under the long-term lubricated state of insulating oil, when upper contact and lower contact adhesive, can not produce spark, be not easy to be oxidized, be not easy to damage, upper contact and the lower contact of contactor can forever be used, extended greatly the useful life of contactor; Matched and make oil filler point oil-proof with O RunddichtringO by sealing bolt, have the effect of dustproof, damp proof, anti-circuit corruption, make whole contactor coefficient of safety high, unfailing performance is good; Workload simple in structure in addition, easy for installation, effectively to reduce a staff, enhances productivity, cost-saving.
Brief description of the drawings
Fig. 1 is a kind of structural representation of the present invention;
Fig. 2 is another kind of structural representation of the present invention.
In figure: 1. sealing bolt, 2.O RunddichtringO, 3. contact cavities, 4. press contact spring, 5. cross tube, 6. flexible conductor, 7. upper lever alignment pin, 8. go up contiguous block, 9. upper and lower lever connecting pin, 10. lower connecting block, 11. insulation crusts, 12. times lever alignment pins, 13. sheer poles, 14. coil lead joints, 15. pedestals, 16. contactor installing holes, 17. times fixed cores, 18. coils, 19. return iron core springs, 20. iron core chambeies, moving iron core on 21., 22. lateral pins, 23. contact leads joints, 24. lower contacts, 25. upper contacts, 26. contact bar, 27. through holes, 28. oil filler points, 29. upper lever mechanisms, 30. times leverages, 31. guide vane end stops, 32. insulating barriers, 33. contact dividing plates.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention will be further described.
As Fig. 1, in embodiment described in Fig. 2, a kind of contactor, comprise insulation crust 11, lower fixed core 17, upper moving iron core 21, lower leverage 30 and upper lever mechanism 29, lower fixed core 17, lower fixed core 17, upper moving iron core 21, lower leverage 30 and upper lever mechanism 29 are installed in the inside of insulation crust 11, lower fixed core 17 is arranged on the intracavity bottom of insulation crust 11, lower fixed core 17 is provided with coil 18, upper moving iron core 21 is arranged on lower leverage 30, one end that lower fixed core 17 is provided with coil 18 places is provided with return iron core spring 19, lower fixed core 17 is connected with upper moving iron core 21 by return iron core spring 19, upper lever mechanism 29 is connected with lower leverage 30, upper lever mechanism 29 is provided with upper contact 25, the inner chamber of insulation crust 11 is provided with the lower contact corresponding with upper contact 25 24, the outside of insulation crust 11 is provided with some for connecting the contact leads joint 23 of upper contact 25 and lower contact 24, between each adjacent contact leads joint 23, be equipped with contact dividing plate 33, the top of insulation crust 11 is provided with oil filler point 28, the bottom even of insulation crust 11 is distributed with some contactor installing holes 16.The intracavity bottom of insulation crust 11 is provided with the pedestal 15 for lower fixed core 17 is installed, and the cross section of lower fixed core 17 is U-shaped, and coil 18 is arranged on one end of lower fixed core 17, and pedestal 15 is provided with coil lead joint 14, coil lead joint 14 connecting coils 18.
Lower leverage 30 comprises sheer pole 13, upper moving iron core 21 and lower connecting block 10, one end of sheer pole 13 is arranged in the inner chamber of insulation crust 11 by lower lever alignment pin 12, the other end of sheer pole 13 is fixedly connected with upper moving iron core 21 by lateral pin 22, the cross section of upper moving iron core 21 is U-shaped, the position of upper moving iron core 21 is corresponding with the position of lower fixed core 17, one end of upper moving iron core 21 is connected with lower fixed core 17 by return iron core spring 19, lower connecting block 10 is arranged on sheer pole 13 and is provided with one end of moving iron core 21 and opposing with upper moving iron core 21, lower connecting block 10 is integrated with sheer pole 13.Upper lever mechanism 29 comprises cross tube 5, upper contiguous block 8 and contact bar 26, one end of cross tube 5 is arranged on by upper lever alignment pin 7 in the inner chamber of insulation crust 11, one end of the other end connecting terminal bar 26 of cross tube 5, upper contact 25 is arranged on the other end of contact bar 26, upper contiguous block 8 is arranged on cross tube 5 and by upper and lower lever connecting pin 9 and is connected with lower connecting block 10, upper contiguous block 8 is integrated with cross tube 5, contact bar 26 is flexibly connected with cross tube 5, one end that contact bar 26 connects cross tube 5 is provided with pressure contact spring 4, cross tube 5 is provided with and the guide vane end stop 31 of pressing contact spring 4 to match.
In insulation crust 11 and be placed between upper lever mechanism 29 and lower leverage 30 and be provided with insulating barrier 32, the centre of insulating barrier 32 is provided with is convenient to the through hole 27 that upper lever mechanism 29 is connected with lower leverage 30, lower contact 24 is arranged on insulating barrier 32, contact leads joint 23 is arranged on the outward flange of insulating barrier 32, and upper contact 25 is all connected with contact leads joint 23 by flexible conductor 6 with lower contact 24.Flexible conductor 6 parts that connect upper contact 25 are placed in the inner chamber of insulation crust 11, another part plastic packaging is connected in insulating barrier 32 and with contact leads joint 23, and the whole plastic packagings of flexible conductor 6 that connect lower contact 24 are connected in insulating barrier 32 and with contact leads joint 23.The cross section of insulation crust 11 is convex, insulation crust 11 is divided into upper and lower two parts by insulating barrier 32, its middle and upper part is divided into contact cavities 3, bottom is divided into iron core chamber 20, contact cavities 3 is communicated with iron core chamber 20 by the through hole 27 on insulating barrier 32, oil filler point 28 is placed in the center, top of contact cavities 3, is provided with O RunddichtringO 2 in oil filler point 28, and oil filler point 28 is matched its sealing is fastenedly connected with O RunddichtringO 2 by sealing bolt 1.
The operation principle of this contactor is to access power supply by coil lead joint 14 coil 18 is switched on, because coil 18 is placed on one end of U-shaped lower fixed core 17, so lower fixed core 17 produces, inhale in magnetic field and upper moving iron core 21, centered by the following lever alignment pin 12 of lower leverage 30, rotate, when the upper moving downward fixed core 17 of iron core 21 is drawn close, return iron core spring 19 is compressed, and lower connecting block 10 is connected by upper and lower lever connecting pin 9 with upper contiguous block 8, when the downward fixed core 17 of lower leverage 30 is drawn close, upper lever mechanism 29 also moves, upper lever mechanism 29 rotates centered by upper lever alignment pin 7, upper contact 25 in contact bar 26 is close to the lower contact 24 on insulating barrier 32, until with insulating barrier 32 on lower contact 24 closures, with lower contact 24, it is fully contacted by pressing contact spring 4 further to compress upper contact 25 simultaneously, instantly when coil 18 dead electricity on fixed core 17, the return iron core spring 19 of compression is released, moving iron core 21 is separated with lower fixed core 17, upper moving iron core 21 drives lower leverage 30 to move, and lower leverage 30 and upper lever mechanism 29 link, the upper contact 25 in upper lever mechanism 29 is separated with the lower contact 24 on insulating barrier 32.And this contactor injects insulating oil by oil filler point 28 in the inner chamber of this insulation crust 11, because the centre of insulating barrier 32 is provided with through hole 27, whole contactor is worked under the long-term lubricated state of insulating oil, so can not produce spark when upper contact 25 and lower contact 24 adhesive, upper contact 25 and lower contact 24 are just not easy to be oxidized, also be not easy to damage simultaneously, security performance is high, good reliability, upper contact 25 and the lower contact 24 of contactor can forever be used, compare with common contactor, extended greatly the useful life of contactor.Matched and make oil filler point 28 oil-proof with O RunddichtringO 2 by sealing bolt 1 on the other hand, have the effect of dustproof, damp proof, anti-circuit corruption, make whole contactor coefficient of safety high, unfailing performance is good.
Claims (9)
1. a contactor, it is characterized in that, comprise insulation crust (11), lower fixed core (17), upper moving iron core (21), lower leverage (30) and upper lever mechanism (29), described lower fixed core (17), lower fixed core (17), upper moving iron core (21), lower leverage (30) and upper lever mechanism (29) are installed in the inside of insulation crust (11), described lower fixed core (17) is arranged on the intracavity bottom of insulation crust (11), described lower fixed core (17) is provided with coil (18), described upper moving iron core (21) is arranged on lower leverage (30), described lower fixed core (17) is provided with one end that coil (18) locates and is provided with return iron core spring (19), described lower fixed core (17) is connected with upper moving iron core (21) by return iron core spring (19), described upper lever mechanism (29) is connected with lower leverage (30), described upper lever mechanism (29) is provided with upper contact (25), the inner chamber of described insulation crust (11) is provided with the lower contact (24) corresponding with upper contact (25), the outside of described insulation crust (11) is provided with some for connecting the contact leads joint (23) of upper contact (25) and lower contact (24), the top of described insulation crust (11) is provided with oil filler point (28).
2. a kind of contactor according to claim 1, it is characterized in that, the intracavity bottom of described insulation crust (11) is provided with the pedestal (15) for lower fixed core (17) are installed, the cross section of described lower fixed core (17) is U-shaped, described coil (18) is arranged on one end of lower fixed core (17), described pedestal (15) is provided with coil lead joint (14), described coil lead joint (14) connecting coil (18).
3. a kind of contactor according to claim 1 and 2, it is characterized in that, described lower leverage (30) comprises sheer pole (13), upper moving iron core (21) and lower connecting block (10), one end of described sheer pole (13) is arranged in the inner chamber of insulation crust (11) by lower lever alignment pin (12), the other end of described sheer pole (13) is fixedly connected with upper moving iron core (21) by lateral pin (22), the cross section of described moving iron core (21) is U-shaped, the position of described moving iron core (21) is corresponding with the position of lower fixed core (17), one end of described moving iron core (21) is connected with lower fixed core (17) by return iron core spring (19), described lower connecting block (10) is arranged on sheer pole (13) and is provided with one end of moving iron core (21) and opposing with upper moving iron core (21).
4. a kind of contactor according to claim 3, it is characterized in that, described upper lever mechanism (29) comprises cross tube (5), upper contiguous block (8) and contact bar (26), one end of described cross tube (5) is arranged in the inner chamber of insulation crust (11) by upper lever alignment pin (7), one end of the other end connecting terminal bar (26) of described cross tube (5), described upper contact (25) is arranged on the other end of contact bar (26), described upper contiguous block (8) is arranged on cross tube (5) and above and by upper and lower lever connecting pin (9) is connected with lower connecting block (10).
5. a kind of contactor according to claim 1 and 2, it is characterized in that, in described insulation crust (11) and be placed between upper lever mechanism (29) and lower leverage (30) and be provided with insulating barrier (32), the centre of described insulating barrier (32) is provided with is convenient to the through hole (27) that upper lever mechanism (29) is connected with lower leverage (30), described lower contact (24) is arranged on insulating barrier (32), described contact leads joint (23) is arranged on the outward flange of insulating barrier (32), described upper contact (25) is all connected with contact leads joint (23) by flexible conductor (6) with lower contact (24).
6. a kind of contactor according to claim 5, it is characterized in that, flexible conductor (6) part for described connection upper contact (25) is placed in the inner chamber of insulation crust (11), another part plastic packaging is connected in insulating barrier (32) and with contact leads joint (23), and the flexible conductor (6) of described connection lower contact (24) all plastic packaging is connected in insulating barrier (32) and with contact leads joint (23).
7. a kind of contactor according to claim 4, it is characterized in that, described contact bar (26) is flexibly connected with cross tube (5), one end that described contact bar (26) connects cross tube (5) is provided with pressure contact spring (4), and described cross tube (5) is provided with and the guide vane end stop (31) of pressing contact spring (4) to match.
8. a kind of contactor according to claim 6, it is characterized in that, the cross section of described insulation crust (11) is convex, described insulation crust (11) is divided into upper and lower two parts by insulating barrier (32), its middle and upper part is divided into contact cavities (3), bottom is divided into iron core chamber (20), contact cavities (3) is communicated with iron core chamber (20) by the through hole (27) on insulating barrier (32), described oil filler point (28) is placed in the center, top of contact cavities (3), in described oil filler point (28), be provided with O RunddichtringO (2), described oil filler point (28) is matched its sealing is fastenedly connected with O RunddichtringO (2) by sealing bolt (1).
9. a kind of contactor according to claim 1 and 2, is characterized in that, the bottom even of described insulation crust (11) is distributed with some contactor installing holes (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410021227.4A CN103996568B (en) | 2014-01-17 | 2014-01-17 | A kind of catalyst |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410021227.4A CN103996568B (en) | 2014-01-17 | 2014-01-17 | A kind of catalyst |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103996568A true CN103996568A (en) | 2014-08-20 |
| CN103996568B CN103996568B (en) | 2016-09-28 |
Family
ID=51310695
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410021227.4A Active CN103996568B (en) | 2014-01-17 | 2014-01-17 | A kind of catalyst |
Country Status (1)
| Country | Link |
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| CN (1) | CN103996568B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110970268A (en) * | 2018-09-30 | 2020-04-07 | 泰科电子(深圳)有限公司 | Electromagnetic relay |
| CN110970266A (en) * | 2018-09-30 | 2020-04-07 | 泰科电子(深圳)有限公司 | Electromagnetic relay |
| CN113483386A (en) * | 2021-06-08 | 2021-10-08 | 何胜阳 | Safety switch for electric heater and electric heater |
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| GB951326A (en) * | 1959-07-17 | 1964-03-04 | Cem Comp Electro Mec | Improvements in or relating to electromagnetic contactors |
| CN2540023Y (en) * | 2002-02-04 | 2003-03-12 | 卢能晓 | Oil-immersed type relay |
| JP2004022203A (en) * | 2002-06-12 | 2004-01-22 | Fuji Electric Holdings Co Ltd | Overload relay |
| CN201196936Y (en) * | 2008-05-17 | 2009-02-18 | 朱建新 | DC contactor |
| CN202585261U (en) * | 2012-05-02 | 2012-12-05 | 镇江天丰电器有限公司 | Oil-immersed direct current contactor |
| CN203721642U (en) * | 2014-01-17 | 2014-07-16 | 黄洪胜 | Contactor |
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2014
- 2014-01-17 CN CN201410021227.4A patent/CN103996568B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB951326A (en) * | 1959-07-17 | 1964-03-04 | Cem Comp Electro Mec | Improvements in or relating to electromagnetic contactors |
| CN2540023Y (en) * | 2002-02-04 | 2003-03-12 | 卢能晓 | Oil-immersed type relay |
| JP2004022203A (en) * | 2002-06-12 | 2004-01-22 | Fuji Electric Holdings Co Ltd | Overload relay |
| CN201196936Y (en) * | 2008-05-17 | 2009-02-18 | 朱建新 | DC contactor |
| CN202585261U (en) * | 2012-05-02 | 2012-12-05 | 镇江天丰电器有限公司 | Oil-immersed direct current contactor |
| CN203721642U (en) * | 2014-01-17 | 2014-07-16 | 黄洪胜 | Contactor |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110970268A (en) * | 2018-09-30 | 2020-04-07 | 泰科电子(深圳)有限公司 | Electromagnetic relay |
| CN110970266A (en) * | 2018-09-30 | 2020-04-07 | 泰科电子(深圳)有限公司 | Electromagnetic relay |
| CN113483386A (en) * | 2021-06-08 | 2021-10-08 | 何胜阳 | Safety switch for electric heater and electric heater |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103996568B (en) | 2016-09-28 |
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Effective date of registration: 20221014 Address after: Building 143, Fulin Community, No. 216-1, Jiahe South Road, Jianyang District, Nanping City, Fujian Province, 354207 Patentee after: Nanping City Jianyang District Botan Electronic Technology Co.,Ltd. Address before: No. 109, Xiapeng Village, Xiaohu Town, Jianyang City, Nanping City, Fujian Province, 354207 Patentee before: Huang Hongsheng |