CN106128857B - D.C. contactor - Google Patents
D.C. contactor Download PDFInfo
- Publication number
- CN106128857B CN106128857B CN201610717561.2A CN201610717561A CN106128857B CN 106128857 B CN106128857 B CN 106128857B CN 201610717561 A CN201610717561 A CN 201610717561A CN 106128857 B CN106128857 B CN 106128857B
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- China
- Prior art keywords
- core rod
- contacting plate
- moving contacting
- fixed
- metal
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/02—Bases; Casings; Covers
- H01H50/026—Details concerning isolation between driving and switching circuit
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/02—Bases; Casings; Covers
- H01H2050/028—Means to improve the overall withstanding voltage, e.g. creepage distances
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Switch Cases, Indication, And Locking (AREA)
- Measuring Leads Or Probes (AREA)
Abstract
The invention discloses a kind of D.C. contactors, including metal shell, plastics seat board, quiet contact point, calotte, metal core rod, moving contacting plate and electromagnet assembly, the upper end of metal core rod, which is located above moving contacting plate, is equipped at intervals with lower insulating washer and upper insulating washer, on, compression spring is equipped between lower insulating washer, metal core rod upper end is fixed with insulating bushing, the height of insulating bushing along longitudinal direction is greater than the sum of the height of moving contacting plate and lower insulating washer, moving contacting plate is fixed on the lower end periphery face of insulating bushing, lower insulating washer is fixed on the upper end outer peripheral surface of insulating bushing.The D.C. contactor increases the height of insulating bushing, pass through insulating washer, the creepage distance of metal core rod is to increase, the final dielectric withstanding voltage improved between moving contacting plate and metal shell, apply product in high media environment, the application range of product is greatly improved, and reduces breakdown and damage risk, improves the service life of D.C. contactor.
Description
Technical field
The present invention relates to a kind of D.C. contactors.
Background technique
Existing D.C. contactor refering to fig. 1-2, including metal shell 116 and is fixed on 116 upper end of metal shell and opens
Mouthful plastics seat board 114, quiet contact point 104 and calotte 101 are fixed on the plastics seat board upper side, metal core rod 107 is along vertical
It is placed through in plastics seat board 114 to activity, the upper end of metal core rod 107 is protruded into calotte 101, and metal shell 116 is protruded into lower end
Interior, 107 upper end of metal core rod is fixed with moving contacting plate 103 by insulating bushing 113, and moving contacting plate is located on quiet contact point
It is square, dynamic iron core 115, returning spring 106 and static iron core 108, dynamic iron core 115 and metal core are successively set on 107 lower end of metal core rod
Bar is fixedly connected, and 107 end of metal core rod is movably placed in static iron core 108, and returning spring 106 is sheathed on metal core rod 107
Upper and both ends push against dynamic iron core 115 and static iron core 108 respectively, and coil 105 is additionally provided with outside static iron core 108.When coil power on/off,
The effect driving metal core rod 107 of the power generated between dynamic and static iron core moves up and down, is fixed on metal core rod to drive
On moving contacting plate and a pair of quiet contact point contact or disconnection, realize the power on/off of D.C. contactor.Metal core rod upper end is dynamic to be connect
It is equipped with by insulating washer 111 for providing the compression spring 102 of contact pressure to moving contacting plate on contact.
In the structure, although being connected between metal core rod and quiet contact chip by insulating bushing 112, the insulating bushing and
Inevitably there is gap, creepage distance, that is, insulating bushing thickness between metal core rod 107 and moving contacting plate 104 between insulating washer
Degree, due to the finite thickness of the insulating bushing, so that the dielectric withstanding voltage between metal core rod 107 and moving contacting plate 104 is limited, limit
Make the application range of product, it is difficult to harsh working environment is adapted to, the equipment faults problems such as breakdown, damage easily occur, thus
Influence the service life of contactor.
Summary of the invention
In order to overcome drawbacks described above, the present invention provides a kind of D.C. contactors, can be improved metal core rod and contact point
Electric clearance and dielectric withstanding voltage between piece, to improve the reliability of contactor, be greatly lowered contactor forceful electric power seal in by
The risk of punch through damage.
The present invention is to solve technical solution used by its technical problem: a kind of D.C. contactor, including outside metal
Shell and the plastics seat board for being fixed on the metal shell upper end opening are fixed with a pair of quiet contact point on the upper side of the plastics seat board
With the calotte to seal, activity is placed through in the plastics seat board metal core rod along longitudinal direction, and the upper end of the metal core rod is stretched
Enter in the calotte, lower end is protruded into the metal shell, which is fixed with moving contacting plate, the moving contacting plate position
In the top of a pair of quiet contact point, it is equipped with electromagnet assembly in the metal shell, which can drive this
Back and forth movement is so that the moving contacting plate is simultaneously turned on or disconnected with two quiet contact points metal core rod along longitudinal direction, the metal core
The upper end of bar, which is located above the moving contacting plate, is equipped at intervals with lower insulating washer and upper insulating washer, upper and lower insulating washer it
Between be equipped with for the moving contacting plate provide contact pressure compression spring, the metal core rod upper end be fixed with insulation lining
Set, the height of the insulating bushing along longitudinal direction are greater than the sum of the height of the moving contacting plate and lower insulating washer, the moving contacting plate
It is fixed on the lower end periphery face of the insulating bushing, the lower insulating washer is fixed on the upper end outer peripheral surface of the insulating bushing.
As a further improvement of the present invention, cross-over block is additionally provided between the insulating bushing and lower insulating washer.
As a further improvement of the present invention, the lower end periphery of the insulating bushing extends outwardly to form step, described
Moving contacting plate and lower insulating washer are sequentially arranged in above the step.
As a further improvement of the present invention, the upper insulating washer is fixed by split pin.
As a further improvement of the present invention, metal washer, the metal washer fixing sleeve are equipped with below the insulating bushing
In the metal core rod.
As a further improvement of the present invention, the electromagnet assembly includes dynamic iron core, static iron core, returning spring and line
Circle, the lower end of the metal core rod successively pass and are placed in dynamic iron core, returning spring and static iron core, which is fixed on the metal
On core bar, which is fixed on the metal shell bottom, and elasticity pushes against the dynamic iron core respectively at the both ends of the returning spring
And static iron core, the coil are located at the static iron core and dynamic iron core periphery.
As a further improvement of the present invention, it is solid to be additionally provided with first above the upper insulating washer for the metal core rod
Determine washer and the second fixing gasket.
The beneficial effects of the present invention are: the present invention is by adjusting the structure of insulating bushing and insulating washer, i.e., it will be exhausted
The height of edge bushing increases, and passes through insulating washer, and the creepage distance of metal core rod finally improves moving contacting plate to increase
Dielectric withstanding voltage between metal shell applies product in high media environment, and the application of product is greatly improved
Range, and breakdown and damage risk are reduced, improve the service life of D.C. contactor.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of Traditional DC contactor；
Fig. 2 is the cut-away section structural schematic diagram of metal core rod and moving contacting plate described in Traditional DC contactor；
Fig. 3 is schematic structural view of the invention；
Fig. 4 is the cut-away section structural schematic diagram of metal core rod of the present invention and moving contacting plate；
Fig. 5 is metal core rod of the present invention and the another form of cut-away section structural schematic diagram of moving contacting plate.
In conjunction with attached drawing, make the following instructions:
101 --- calotte 102 --- compression springs
103 --- moving contacting plate 104 --- plastics seat boards
105 --- coil 106 --- returning springs
107 --- metal core rod 108 --- static iron cores
109 --- the first fixing gasket 110 --- second fixing gaskets
111 --- lower insulating washer 112 --- insulating bushings
113 --- metal washer 114 --- plastics seat boards
115 --- dynamic iron core 116 --- metal shells
117 --- upper insulating washer 118 --- cross-over blocks
Specific embodiment
It in conjunction with attached drawing, elaborates to the present invention, but protection scope of the present invention is not limited to following embodiments, i.e., in every case
With simple equivalent changes and modifications made by scope of the present invention patent and description, all still belong to the invention patent culvert
Within the scope of lid.
It is a kind of D.C. contactor of the present invention refering to Fig. 3-4, including metal shell 116 and is fixed on the metal
The plastics seat board 114 of upper shell opening is fixed with a pair of quiet contact point 104 on the upper side of the plastics seat board and plays sealing and makees
Calotte 101, activity is placed through in plastics seat board 114 metal core rod 107 along longitudinal direction, and the upper end of the metal core rod 107 is protruded into
In calotte 101, lower end is protruded into metal shell 116, which is fixed with moving contacting plate 103, the moving contacting plate position
In being equipped with electromagnet assembly in the top of a pair of quiet contact point, the metal shell 116, which can drive the gold
Belong to core bar along longitudinal direction back and forth movement so that the moving contacting plate is simultaneously turned on or is disconnected with two quiet contact points.The electromagnet assembly
Including dynamic iron core 115, static iron core 108, returning spring 106 and coil 105, the lower end of metal core rod 107 successively passes and is placed on dynamic iron
In core, returning spring and static iron core, which is fixed in the metal core rod, which is fixed on the metal shell bottom
Portion, elasticity pushes against dynamic iron core respectively and static iron core, coil are located at the static iron core and dynamic iron core periphery at the both ends of the returning spring.
When coil switching electricity, dynamic and static iron core generates electromagnetic force, so that dynamic iron core drives metal core rod 107 along its axis back and forth movement,
To drive moving contacting plate to move up and down to be switched on or switched off with the realization of a pair of of stationary contact, to realize opening and closing function.
The upper end of metal core rod 107, which is located above moving contacting plate, is equipped at intervals with lower insulating washer 111 and upper insulating washer
117, it is equipped between the upper and lower insulating washer for providing the compression spring 102 of contact pressure to moving contacting plate.Metal core rod
107 upper ends are fixed with insulating bushing 112, and the height of the insulating bushing along longitudinal direction is greater than moving contacting plate 103 and lower insulating washer
The sum of 111 height, moving contacting plate 103 are fixed on the lower end periphery face of the insulating bushing, and lower insulating washer 111 is fixed on this
On the upper end outer peripheral surface of insulating bushing.The present invention changes insulating bushing in traditional structure mode and is positioned only at metal core rod positioned at dynamic
On part in contact chip, but the length of insulating bushing is elongated, upwardly extends it and be pierced by lower insulating washer, to make
Creepage distance between metal core rod and moving contacting plate increases, referring to Fig.2, traditional creepage distance is a, and in the present invention
Creepage distance is then a+b or c+d, it is seen then that the relatively traditional creepage distance of the distance greatly increases, so that moving contacting plate
Pressure voltage between metal shell greatly improves, which is applied in the environment for doing dielectric withstanding voltage, greatly
Amplitude improves the application range of product, reduces breakdown and damage risk, improves the service life of D.C. contactor.
It, can be in the insulating bushing 112 in order to further increase the creepage distance between metal core rod and moving contacting plate
Cross-over block 118 is set between lower insulating washer 111, refering to Fig. 5, insulating washer 111 can use nonisulated material at present for this,
It, can also be using isolation materials such as plastics such as metal material.In order to preferably fix moving contacting plate, outside the lower end of insulating bushing
Circumferential surface extends outward to form step, and moving contacting plate and lower insulating washer are sequentially arranged in above the step.Step can be to moving contacting plate
It opens and breaks supporting role, and compressed and positioned by upper insulating washer.In order to increase connecing between insulating bushing lower end and metal core rod
Contacting surface product, is equipped with metal washer 113 below insulating bushing, which is set in the metal core rod.
Metal core rod upper end is located above the upper insulating washer also for better fixation pressure spring in metal core rod
Equipped with the first fixing gasket 109 and the second fixing gasket 110, and upper insulating washer is fixed by split pin.
It can be seen that the present invention is by adjusting the structure of insulating bushing and insulating washer, i.e., by the height of insulating bushing
Degree increases, and passes through insulating washer, and the creepage distance of metal core rod is final to improve moving contacting plate and metal shell to increase
Between dielectric withstanding voltage, apply product in high media environment, the application range of product be greatly improved, and reduce
Breakdown and damage risk, improve the service life of D.C. contactor.
Claims (6)
1. a kind of D.C. contactor, including metal shell (116) and it is fixed on the plastics seat board of the metal shell upper end opening
(114), the calotte (101) that a pair of quiet contact point (104) is fixed on the upper side of the plastics seat board and is sealed, metal
Activity is placed through in the plastics seat board (114) core bar (107) along longitudinal direction, and the cap is protruded into the upper end of the metal core rod (107)
It covers in (101), lower end is protruded into the metal shell (116), which is fixed with moving contacting plate (103), this is dynamic
Contact chip is located at the top of a pair of quiet contact point, is equipped with electromagnet assembly, the electromagnet group in the metal shell (116)
Part can drive the metal core rod along longitudinal direction back and forth movement so that the moving contacting plate simultaneously turns on or breaks with two quiet contact points
It opens, the upper end of the metal core rod, which is located above the moving contacting plate, is equipped at intervals with lower insulating washer (111) and upper felt pad
It encloses (117), is equipped between upper and lower insulating washer for providing the compression spring (102) of contact pressure to the moving contacting plate,
Be characterized in that: the metal core rod upper end is fixed with insulating bushing (112), and the height of the insulating bushing along longitudinal direction is greater than described
The sum of the height of moving contacting plate and lower insulating washer, the moving contacting plate are fixed on the lower end periphery face of the insulating bushing, institute
Lower insulating washer is stated to be fixed on the upper end outer peripheral surface of the insulating bushing；The lower end periphery of the insulating bushing extends outwardly shape
At step, the moving contacting plate and lower insulating washer are sequentially arranged in above the step.
2. D.C. contactor according to claim 1, it is characterised in that: the insulating bushing (112) and lower insulating washer
(111) cross-over block (118) are additionally provided between.
3. D.C. contactor according to claim 1, it is characterised in that: the upper insulating washer is fixed by split pin.
4. D.C. contactor according to claim 1, it is characterised in that: be equipped with metal washer below the insulating bushing
(113), which is set in the metal core rod.
5. D.C. contactor according to claim 1, it is characterised in that: the electromagnet assembly include dynamic iron core (115),
Static iron core (108), returning spring (106) and coil (105), the lower end of the metal core rod are successively set in dynamic iron core, reply
In spring and static iron core, which is fixed in the metal core rod, which is fixed on the metal shell bottom, this time
Elasticity pushes against the dynamic iron core respectively and static iron core, the coil are located at outside the static iron core and dynamic iron core at the both ends of multiple spring
Week.
6. D.C. contactor according to claim 1, it is characterised in that: the metal core rod is located at the upper insulating washer
Top be additionally provided with the first fixing gasket (109) and the second fixing gasket (110).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610717561.2A CN106128857B (en) | 2016-08-25 | 2016-08-25 | D.C. contactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610717561.2A CN106128857B (en) | 2016-08-25 | 2016-08-25 | D.C. contactor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106128857A CN106128857A (en) | 2016-11-16 |
| CN106128857B true CN106128857B (en) | 2019-01-08 |
Family
ID=57274044
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610717561.2A Active CN106128857B (en) | 2016-08-25 | 2016-08-25 | D.C. contactor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106128857B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4102532A4 (en) * | 2020-02-26 | 2023-05-03 | Huawei Digital Power Technologies Co., Ltd. | Contact device and electromagnetic switch |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107871644B (en) * | 2017-09-29 | 2020-08-28 | 浙江宏舟新能源科技有限公司 | High-voltage direct-current relay with high creepage distance and assembly method thereof |
| CN110600328B (en) * | 2019-10-31 | 2024-04-16 | 浙江东亚电子有限公司 | Waterproof normally open direct current contactor |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2783340A (en) * | 1954-01-11 | 1957-02-26 | Cutler Hammer Inc | Hermetically sealed electro-magnetic contactors and the like |
| US5990771A (en) * | 1997-02-14 | 1999-11-23 | Valeo Equipements Electriques Moteur | Contactor for a motor vehicle starter, having improved protection for an electronic circuit of the contactor |
| CN2446653Y (en) * | 2000-08-29 | 2001-09-05 | 蔡松泉 | D.C contactor |
| CN201000865Y (en) * | 2007-01-15 | 2008-01-02 | 陈守约 | D.C. contactor |
| CN201886973U (en) * | 2010-12-16 | 2011-06-29 | 中国振华集团群英无线电器材厂 | High-power direct current contactor |
| CN204144161U (en) * | 2014-10-21 | 2015-02-04 | 贵州天义电器有限责任公司 | 200A novel seal D.C. contactor |
| CN205959887U (en) * | 2016-08-25 | 2017-02-15 | 昆山国力源通新能源科技有限公司 | DC (direct -current) contactor |
-
2016
- 2016-08-25 CN CN201610717561.2A patent/CN106128857B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2783340A (en) * | 1954-01-11 | 1957-02-26 | Cutler Hammer Inc | Hermetically sealed electro-magnetic contactors and the like |
| US5990771A (en) * | 1997-02-14 | 1999-11-23 | Valeo Equipements Electriques Moteur | Contactor for a motor vehicle starter, having improved protection for an electronic circuit of the contactor |
| CN2446653Y (en) * | 2000-08-29 | 2001-09-05 | 蔡松泉 | D.C contactor |
| CN201000865Y (en) * | 2007-01-15 | 2008-01-02 | 陈守约 | D.C. contactor |
| CN201886973U (en) * | 2010-12-16 | 2011-06-29 | 中国振华集团群英无线电器材厂 | High-power direct current contactor |
| CN204144161U (en) * | 2014-10-21 | 2015-02-04 | 贵州天义电器有限责任公司 | 200A novel seal D.C. contactor |
| CN205959887U (en) * | 2016-08-25 | 2017-02-15 | 昆山国力源通新能源科技有限公司 | DC (direct -current) contactor |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4102532A4 (en) * | 2020-02-26 | 2023-05-03 | Huawei Digital Power Technologies Co., Ltd. | Contact device and electromagnetic switch |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106128857A (en) | 2016-11-16 |
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