CN101840815A - High dielectric voltage withstand direct-current contactor - Google Patents
High dielectric voltage withstand direct-current contactor Download PDFInfo
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- CN101840815A CN101840815A CN 201010175169 CN201010175169A CN101840815A CN 101840815 A CN101840815 A CN 101840815A CN 201010175169 CN201010175169 CN 201010175169 CN 201010175169 A CN201010175169 A CN 201010175169A CN 101840815 A CN101840815 A CN 101840815A
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Abstract
The invention discloses a high dielectric voltage withstand direct-current contactor which solves the problem that the prior art can not meet the requirement of high dielectric voltage withstand. The high dielectric voltage withstand direct-current contactor comprises a base, an electromagnet mechanism and moving and fixed contracts used for switching on and off current and controlled by an armature and an ejector pin of the electromagnet mechanism. The contactor is technically characterized in that the base consists of three parts of an epitaxial edge-type lower base, U-shaped surrounding edge middle base and an upper base which are fixed together by long screws; the epitaxial edge-type lower base is fixedly assembled on the concentrating flux plate of the electromagnet mechanism; the moving and fixed contacts comprise a mine open fixed contact, a moving contact group and a main closed fixed contact; the main open fixed contact is fixed on the upper base by using a wiring screw; the main closed fixed contact is directly fixed on the U-shaped surrounding edge middle base; and the moving contact is clamped between an upper spring seat and a lower spring seat and reciprocates along the axial direction synchronously under the action of the armature and the ejector pin. The invention has the advantages of reasonable design, compact structure and small size and can greatly improve the insulation dielectric performance and further meet the requirements on improving insulation voltage or dielectric voltage withstand and widening the application range.
Description
Technical field
The invention belongs to the low-tension switch electric appliance field, specifically a kind ofly satisfy nominal insulation voltage and reach AC690V or dielectric voltage withstand and reach the high dielectric voltage withstand direct-current contactor that 6000V requires.
Background technology
Existing D.C. contactor kind is more, mostly be 1 normally open contact greatly, be mainly used in battery driven vehicle starting, stop and the power supply in places such as electri forklift, traction locomotive, telecommunications, computer switches and the forward and reverse change-over circuit control of uninterruptible power system.Traditional D.C. contactor mainly comprises pedestal and its interior electromagnet mechanism of assembling and armature, the connection of push rod control and the dynamic and static contact of breaking current.When the coil excitation in the electromagnet mechanism, armature drives push rod and moves upward, and drives moving contact and moves upward, and makes moving contact and normally closed fixed contact disjunction, and connects and often open fixed contact.When the coil in the electromagnet mechanism does not have when excitatory, the push rod that the drive moving contact moves upward loses the driving action of armature, moved downward by the reaction spring effect, and push rod collision armature is got back to initial position, make and often open fixed contact and be converted to disconnection by connection, normally closed fixed contact is converted to by disconnection and connects the position.Existing D.C. contactor is to adopt the structure of the MZJ of former Soviet Union type series aviation contactor or carry out improved on this basis mostly.For example number be 95232261.7 in Chinese patent application, 96202063.X, 02262973.4,200420037061.7,200520089587.4,200720105712.5,200720105713.X, disclosed D.C. contactors such as 200720045041.8.Though the structure of these D.C. contactors is compared with the structure of MZJ type series aviation contactor with traditional structure to a certain extent and is improved to some extent, performance increases, but its operating voltage generally still is DC48V, therefore, the D.C. contactor of these low-voltage directs operation is subjected to the restriction of structure, can't satisfy nominal insulation voltage and reach the requirement that AC690V or dielectric voltage withstand reach 6000V.
Summary of the invention
The purpose of this invention is to provide a kind of high dielectric voltage withstand direct-current contactor, it has solved the problem that can't satisfy high dielectric voltage withstand that prior art exists, it is reasonable in design, compact conformation, volume is little, significantly improve the insulative dielectric performance, further satisfy the requirement that improves insulation voltage or dielectric voltage withstand and expansion range of application.
The technical solution adopted in the present invention is: this high dielectric voltage withstand direct-current contactor comprises pedestal and its interior electromagnet mechanism and armature thereof of assembling, moving of the connection of push rod control and breaking current, fixed contact, its technical essential is: described pedestal is by three extension limit formula bottom bases that flange is set down, have that pedestal and top base three parts constitute in the U-shaped surrounding edge of three upper overturnings, and be fixed together with long spiro nail, described extension limit formula bottom base fixedly is assembled on the magnetic conductive board of described electromagnet mechanism, described moving, fixed contact comprises the main fixed contact of opening, moving contact group and the main fixed contact that closes, described master opens fixed contact and utilizes wiring screw rod to be fixed on the described top base, described master closes on the middle pedestal that fixed contact directly is fixed on described U-shaped surrounding edge, described moving contact group is clamped in the protection type insulation, between the lower spring cup, and along with on described, the supporter that lower spring cup fits together is under the effect of the armature of described electromagnet mechanism and the push rod that has supporting hole and umbrella boss, along the synchronous reciprocating motion of axis direction.
The described upper and lower spring base that utilizes described supporter to fit together is contained in described top base and the U-shaped surrounding edge in the cavity between the pedestal by reaction spring and inside and outside groups of springs.
Insert in the supporting hole of the described push rod upper end that supporting hole and umbrella boss are set the bottom of described supporter.
The fixing hole that fixedly is assembled in the described extension limit formula bottom base on the described electromagnet mechanism magnetic conductive board seals with the sealing of high insulation resistance is stifled.
Advantage and good effect that the present invention has are: because the present invention adopts by extension limit formula bottom base, the assembly type pedestal that pedestal and top base three parts constitute in the U-shaped surrounding edge, the moving contact group is clamped in the protection type insulation, between the lower spring cup, and along with supporter under the effect of armature that the iron core of electromagnet mechanism drives and push rod, along the synchronous reciprocating motion of axis direction, by the improved push rod that has supporting hole and umbrella boss, in the protection type insulation of unique model, lower spring cup, three are provided with down the extension limit bottom base of flange and have distinguished structure such as pedestal in the U-shaped surrounding edge of three upper overturnings, institute is so that it is reasonable in design, compact conformation, volume is little, electric clearance and creepage distance of insulation have been increased effectively, therefore, further satisfy nominal insulation voltage and reached the requirement that AC690V or dielectric voltage withstand reach 6000V, enlarged range of application.It has solved the problem that can't satisfy high dielectric voltage withstand that prior art exists, and has significantly improved the insulative dielectric performance.
Description of drawings
Below in conjunction with accompanying drawing the present invention is further described.
Fig. 1 is a kind of concrete structure schematic diagram of the present invention.
Fig. 2 is the end view of Fig. 1.
Sequence number explanation among the figure: pedestal in 1 electromagnet mechanism, 2 extension limit formula bottom bases, the 3U shape surrounding edge, 4 top bases, 5 lower spring cups, 6 upper spring seats, 7 supporters, 8 reaction springs, 9 connecting plates, 10 are mainly opened fixed contact, 11 moving contact groups, the 2 main fixed contacts, 13 outer springs, 14 inner springs, 15 push rods, 16 magnetic conductive boards, 17 iron cores, 18 armature, 19 coils, 20 magnetic of closing are gripped.
Embodiment
Describe concrete structure of the present invention in detail according to Fig. 1～2.This high dielectric voltage withstand direct-current contactor comprises pedestal and its interior electromagnet mechanism 1 of assembling and armature 18, the connection of push rod 15 controls and the dynamic and static contact of breaking current.Wherein pedestal adopts modular construction, promptly by three extension limit formula bottom bases 2 that flange is set down, have that top base 4 three parts of pedestal 3 and common structure constitute in the U-shaped surrounding edge of three upper overturnings, and be fixed together after with long spiro nail pedestal in top base 4 and the U-shaped surrounding edge 3 and extension limit formula bottom base 2 three parts being assembled in proper order.Electromagnet mechanism 1 comprises that mainly push rod 15, magnetic conductive board 16, unshakable in one's determination 17, armature 18, coil 19, magnetic grips parts such as 20.Extension limit formula bottom base 2 fixedly is assembled on the magnetic conductive board 16 of electromagnet mechanism 1.Be to improve insulation property, fixedly be assembled in the fixing hole of the extension limit formula bottom base 2 on the magnetic conductive board 16 of electromagnet mechanism 1, the stifled sealing of sealing of adopting high insulation resistance.The push rod 15 that top is provided with supporting hole and umbrella boss is assembled in extension limit formula bottom base 2 inner chambers.Push rod 15 contacts with the iron core 17 of electromagnet mechanism 1, when the coil in the electromagnet mechanism 1 19 is excitatory, drives push rod 15 at 17 effect lower armatures 18 unshakable in one's determination and moves up along axis.
Dynamic and static contact comprises that the master opens fixed contact 10, moving contact group 11 and master and closes parts such as fixed contact 12.The master opens fixed contact 10 and utilizes wiring screw rod to be fixed on the top base 4, and is connected with the wiring screw rod of top base 4 outsides by connecting plate 9.Main closing on the middle pedestal 3 that fixed contact directly is fixed on the U-shaped surrounding edge.Open fixed contact 10 or mainly close clamping insulating cell composition moving contact group 11 between upper and lower two moving contacts that fixed contact 12 contact with main respectively.Moving contact group 11 is clamped in protection type and insulate between the upper and lower spring base 6,5, upper and lower spring base 6,5 fits together by reaction spring 8 and inside and outside spring 14,13 and supporter 7, place the inner chamber of top base 4 and U-shaped surrounding edge pedestal 3 then, and the bottom of supporter 7 is inserted in the supporting hole of push rod 15 upper ends.When the coil in the electromagnet mechanism 1 19 was excitatory, the supporter 7 that the push rod 15 that moves up along axis promotes to insert in its upper end supporting hole also moved up.So under the effect of the armature 18 of electromagnet mechanism 1 and umbrella push rod 15, moving contact group 11 moves upward synchronously along axis direction, closes fixed contact 12 disjunctions with main, and connects the main fixed contact 10 of opening.The main initial pressure of opening fixed contact 10 is determined by the lower limit retaining platform of supporter 7 and the distance between lower spring cup 5 bottom end faces.When the coil in the electromagnet mechanism 1 19 no when excitatory, whole moving contact group 11 is under the effect of reaction spring 8, along with protection type upper and lower spring base 6,5 and supporter 7 (oppositely) motion downwards synchronously of insulating, finally supporter 7 makes umbrella push rod 15, armature 18 get back to initial position.The main fixed contact 10 opened is converted to disconnection by connection, and the main fixed contact 12 that closes is converted to by disconnection and connects the position.
The protection type of the present invention by the improved push rod 15 that is provided with supporting hole and umbrella boss, the unique model upper and lower spring base 6,5 that insulate, three are provided with down the extension limit bottom base 2 of flange and have pedestal 3 in the U-shaped surrounding edge of three upper overturnings, electric clearance and creepage distance of insulation have been increased effectively, can satisfy that nominal insulation voltage reaches AC690V or dielectric voltage withstand reaches the 6000V requirement, enlarge range of application effectively.Therefore, greatly having satisfied the insulative dielectric performance can be up to withstand voltage 1 minute of 25KV between contact is to coil, and Control current can reach the requirement of 400～500A..
Claims (4)
1. high dielectric voltage withstand direct-current contactor, comprise its interior electromagnet mechanism and armature thereof of pedestal and assembling, moving of the connection of push rod control and breaking current, fixed contact, it is characterized in that: described pedestal is by three extension limit formula bottom bases that flange is set down, have that pedestal and top base three parts constitute in the U-shaped surrounding edge of three upper overturnings, and be fixed together with long spiro nail, described extension limit formula bottom base fixedly is assembled on the magnetic conductive board of described electromagnet mechanism, described moving, fixed contact comprises the main fixed contact of opening, moving contact group and the main fixed contact that closes, described master opens fixed contact and utilizes wiring screw rod to be fixed on the described top base, described master closes on the middle pedestal that fixed contact directly is fixed on described U-shaped surrounding edge, described moving contact group is clamped in the protection type insulation, between the lower spring cup, and along with on described, the supporter that lower spring cup fits together is under the effect of the armature of described electromagnet mechanism and the push rod that has supporting hole and umbrella boss, along the synchronous reciprocating motion of axis direction.
2. high dielectric voltage withstand direct-current contactor according to claim 1, its spy is characterised in that: the described protection type that utilizes described supporter the to fit together upper and lower spring base that insulate is contained in described top base and the U-shaped surrounding edge in the cavity between the pedestal by reaction spring and inside and outside groups of springs.
3. high dielectric voltage withstand direct-current contactor according to claim 1, its spy is characterised in that: insert in the supporting hole of the described push rod upper end that supporting hole and umbrella boss are set the bottom of described supporter.
4. high dielectric voltage withstand direct-current contactor according to claim 1, its spy is characterised in that: the fixing hole that fixedly is assembled in the described extension limit formula bottom base on the described electromagnet mechanism magnetic conductive board seals with the sealing of high insulation resistance is stifled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010175169 CN101840815B (en) | 2010-05-18 | 2010-05-18 | High dielectric voltage withstand direct-current contactor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010175169 CN101840815B (en) | 2010-05-18 | 2010-05-18 | High dielectric voltage withstand direct-current contactor |
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| Publication Number | Publication Date |
|---|---|
| CN101840815A true CN101840815A (en) | 2010-09-22 |
| CN101840815B CN101840815B (en) | 2013-02-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010175169 Expired - Fee Related CN101840815B (en) | 2010-05-18 | 2010-05-18 | High dielectric voltage withstand direct-current contactor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103051048A (en) * | 2012-12-26 | 2013-04-17 | 华为技术有限公司 | Loop switching method, device and system |
| CN109119293A (en) * | 2018-09-10 | 2019-01-01 | 上海良信电器股份有限公司 | A kind of D.C. contactor contact system and the D.C. contactor |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5917394A (en) * | 1998-12-01 | 1999-06-29 | Fuchs; Michael J | Solenoid switch modified for higher current passage |
| CN2566442Y (en) * | 2002-07-08 | 2003-08-13 | 蔡松泉 | DC contactor |
| CN2705881Y (en) * | 2004-04-23 | 2005-06-22 | 邹德 | Seal DC contactor |
| JP2006260846A (en) * | 2005-03-15 | 2006-09-28 | Denso Corp | Electromagnetic switch |
| CN201698969U (en) * | 2010-05-18 | 2011-01-05 | 沈阳二一三控制电器制造有限公司 | High-insulation and pressure-resistant direct current contactor |
-
2010
- 2010-05-18 CN CN 201010175169 patent/CN101840815B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5917394A (en) * | 1998-12-01 | 1999-06-29 | Fuchs; Michael J | Solenoid switch modified for higher current passage |
| CN2566442Y (en) * | 2002-07-08 | 2003-08-13 | 蔡松泉 | DC contactor |
| CN2705881Y (en) * | 2004-04-23 | 2005-06-22 | 邹德 | Seal DC contactor |
| JP2006260846A (en) * | 2005-03-15 | 2006-09-28 | Denso Corp | Electromagnetic switch |
| CN201698969U (en) * | 2010-05-18 | 2011-01-05 | 沈阳二一三控制电器制造有限公司 | High-insulation and pressure-resistant direct current contactor |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103051048A (en) * | 2012-12-26 | 2013-04-17 | 华为技术有限公司 | Loop switching method, device and system |
| CN109119293A (en) * | 2018-09-10 | 2019-01-01 | 上海良信电器股份有限公司 | A kind of D.C. contactor contact system and the D.C. contactor |
| CN109119293B (en) * | 2018-09-10 | 2024-03-15 | 上海良信电器股份有限公司 | Direct current contactor contact system and direct current contactor |
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| Publication number | Publication date |
|---|---|
| CN101840815B (en) | 2013-02-13 |
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