CN105513897A - Sealed type direct current contactor with high breaking capacity - Google Patents
Sealed type direct current contactor with high breaking capacity Download PDFInfo
- Publication number
- CN105513897A CN105513897A CN201610026930.3A CN201610026930A CN105513897A CN 105513897 A CN105513897 A CN 105513897A CN 201610026930 A CN201610026930 A CN 201610026930A CN 105513897 A CN105513897 A CN 105513897A
- Authority
- CN
- China
- Prior art keywords
- contact
- contactor
- sealed type
- breaking capacity
- push rod
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- 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.)
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/02—Bases; Casings; Covers
- H01H50/023—Details concerning sealing, e.g. sealing casing with resin
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/54—Contact arrangements
- H01H50/56—Contact spring sets
- H01H50/58—Driving arrangements structurally associated therewith; Mounting of driving arrangements on armature
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The invention relates to a sealed type direct current contactor with high breaking capacity. The sealed type direct current contactor with high breaking capacity is characterized in that a reaction spring and a bridge terminal assembly are respectively arranged at the lower end and upper end of a push rod; a moving iron core is arranged in an electromagnetic coil and is connected with the push rod; a contact assembly is fixedly arranged above the electromagnetic coil; a casing and an arc extinguishing cover form a sealing cavity; an action system, a contact system and a magnetic circuit system are respectively arranged in the sealing cavity; the arc extinguishing cover comprises a metal ceramic sheet, a permanent magnet and an upper cover; the upper cover is connected and sealed with the casing; the metal ceramic sheet and the permanent magnet are respectively and fixedly arranged at the two ends and two sides of the upper cover. The sealed type direct current contactor has the beneficial effect that the electric arc generated by the disconnecting of a main contact is effectively extended by the metal ceramic sheet in a strong magnetic field which is generated by the permanent magnet, a metal oxide in the metal ceramic sheet can be decomposed by the effect of the electric arc to absorb a large amount of heat, and a large amount of electric arc energy is consumed, so that the electric arc can be quickly extinguished.
Description
Technical field
The present invention relates to low voltage switch field, be specifically related to a kind of closed type D.C. contactor.
Background technology
D.C. contactor is as one of critical elements in automatic control system, specifically a kind is used for being switched on or switched off the automation switch of load-carrying direct current main circuit or Large Copacity control circuit, major control is to liking motor, in addition also for other electrical loads, as electric heater, electric welding machine, lighting apparatus etc.Meanwhile, D.C. contactor can not only be connected and cut off circuit, but also has the effect of low-voltage release guard.In addition, contactor control capability is large, can meet the operational requirements such as frequent operation and far distance controlled.
The electromagnet of existing D.C. contactor generally adopts double winding coil, be specially and arrange 1 to auxiliary normally-closed contact at housing bottom, due to the design of contact and lead-out wire, just must be porose at housing bottom, make D.C. contactor must form unsealed structure, and between little calotte and housing, between electromagnet, mounting panel, base plate assembly, the binding face between calotte and base plate assembly the harmful substance such as anti-sealing, salt fog, dust can not enter that it innerly produces corrosion, contact oxidation, electrical apparatus insulation performance reduce.
Meanwhile, contact excessive wear when existing D.C. contactor also exists disjunction big current, the problem that during disjunction small area analysis, the arcing time is long.
Summary of the invention
Technical problem to be solved by this invention is: a kind of closed type D.C. contactor with high breaking capacity, the structure fabrication of non-hermetic is helped sealed construction, improve reliability and useful life, and it is little to have volume, the advantages such as load capacity is large; Improve breaking capacity and the insulation property of D.C. contactor by structure optimization.Based on above-mentioned advantage, this closed type D.C. contactor is applicable to the field such as short circuit current-limiting resistance in the switch control rule of storage battery main circuit in engineering machinery, the protection switch of engine start and communication power supply and frequency converter, and the scope of application obtains to be widened.
For solving the problems of the technologies described above, technical scheme provided by the invention is: a kind of sealed type D.C. contactor with high breaking capacity, comprises external structure, moving system, contact system and magnetic circuit system.
External structure comprises housing and arc-extinguish chamber, and its function plays the effect of sealing and arc extinguishing.
Moving system comprises reaction spring, push rod, bridge terminal assemblies and dynamic iron core, and its function drives other each parts of D.C. contactor to operate under the effect of magnetic force or spring force.
Contact system comprises contact assembly, its function be by contact deciliter, reach disjunction and connect the object of load circuit.
Magnetic circuit system comprises static iron core and solenoid, and its function is after solenoid energising, can produce high-intensity magnetic field, makes static iron core produce electromagnetic attraction and attracts dynamic iron core, and be with the action of bridge terminal assemblies: normally closed interlock disconnects, and normally open contact closes, and both are interlocks.When solenoid power-off, electromagnetic attraction disappears, and dynamic iron core discharges under the effect of reaction spring, and contact is restored: normally closed interlock closes, and normally open contact disconnects.
Particular location relation is: reaction spring and bridge terminal assemblies are arranged on push rod lower end and upper end respectively; Dynamic iron core is arranged on solenoid inside and is connected with push rod.
Contact assembly is fixed on above solenoid.
Static iron core is arranged on push rod lower end.
Housing and arc-extinguish chamber form annular seal space, and aforesaid moving system, contact system and magnetic circuit system are all installed in annular seal space.
Arc-extinguish chamber comprises cermet sheet, permanent magnet and upper cover.
Upper cover connects with housing to merging and seals.Cermet sheet and permanent magnet are separately fixed at two ends and the both sides of upper cover.
In the technical scheme of further optimization, permanent magnet is 2 right, and every 1 to the both sides being separately fixed at upper cover, and points to contrary with the N pole of 1 pair of permanent magnet, and N pole, the same side pointing direction is identical.
In the technical scheme of further optimization, moving system comprises touch spring.Touch spring upper end is connected with bottom bridge terminal assemblies.
In the technical scheme of further optimization, bridge terminal assemblies and contact assembly all comprise contact.When the contact on bridge terminal assemblies and the contact on contact assembly contact with each other, can turning circuit.
In the technical scheme of further optimization, magnetic circuit system comprises iron flask.Iron flask is close to inner walls.
In the technical scheme of further optimization, magnetic circuit system comprises magnetic conductive board.Magnetic conductive board is fixed on above solenoid.
In the technical scheme of further optimization, magnetic circuit system has magnetic conductivity.
In the technical scheme of further optimization, upper cover engages with housing, and adopts fluid sealant to sealing gap between the two.
In the technical scheme of further optimization, moving system comprises porcelain seat and pad.Porcelain seat is arranged between the bottom at push rod top and bridge terminal assemblies center.Pad is arranged between the top at push rod upper end and bridge terminal assemblies center.
In the technical scheme of further optimization, after solenoid energising, dynamic iron core produces suction under the action of a magnetic force, drives push rod and the action of bridge terminal assemblies, the contact on bridge terminal assemblies and the contact on contact assembly is contacted with each other, turning circuit.Reaction spring is compressed simultaneously.
After solenoid power-off, electromagnetic force disappears, and reaction spring is returned to the state before compression, and drive dynamic iron core, push rod and bridge terminal assemblies to reset, the contact on bridge terminal assemblies separates with the contact on contact assembly, open circuit.
In the technical scheme of further optimization, the cross section of permanent magnet can be various shape, as specifically can annular be selected, also can select rectangle.
After have employed technique scheme, the invention has the beneficial effects as follows:
Relative to the technical scheme disclosed, the high breaking capacity of this sealed type D.C. contactor arranges cermet sheet by two ends in arc-extinguish chamber and permanent magnet realizes, after being specially energising, solenoid produces high-intensity magnetic field, in high-intensity magnetic field, electric arc effectively will be elongated by cermet sheet, and the metal oxide in cermet sheet can decompose and absorb a large amount of heats under the effect of electric arc, a large amount of arc energies is consumed, thus electric arc is extinguished rapidly, energising element is cooled rapidly, and then decrease the wearing and tearing of each contact in trigger, improve the useful life of equipment.
After upper cover engages with housing, gap between the two adopts fluid sealant to seal, thus improves insulation property and the protective capacities of contactor.
The effect of magnetic support is fixed on push rod by bridge terminal assemblies.
Pad, plain cushion and bullet pad are used for the connection of element, location and fastening.
Iron flask, static iron core, magnetic conductive board are the good material of magnetic property, can produce suction under the action of a magnetic force to dynamic iron core, and drive the mechanisms such as push rod to produce action.
Accompanying drawing explanation
Fig. 1 has the sealed type D.C. contactor longitudinal sectional drawing of high breaking capacity
Fig. 2 has the sealed type D.C. contactor transverse cross-sectional view of high breaking capacity
Embodiment
Describe the present invention below in conjunction with accompanying drawing 1 and accompanying drawing 2 and specific embodiment, but not as a limitation of the invention.
The technical program provides a kind of closed type D.C. contactor of high breaking capacity; breaking capacity and the insulation property of D.C. contactor can be improved; it is especially by making compact conformation; ensure contactor stable and work reliably; widen its scope of application simultaneously, be specifically applicable to short circuit current-limiting resistance in the switch control rule of storage battery main circuit in engineering machinery, the protection switch of engine start and communication power supply, frequency converter.
The closed type D.C. contactor of the high breaking capacity involved by the technical program specifically comprises external structure 1, moving system 2, contact system 3 and magnetic circuit system 4.
The function of external structure 1 plays the effect of sealing and arc extinguishing.
The function of moving system 2 drives D.C. contactor to operate under the effect of magnetic force or spring force.
The function of contact system 3 be by contact deciliter, reach disjunction and connect the object of load circuit.
The function of magnetic circuit system 4, after solenoid 42 is energized, can produce high-intensity magnetic field, makes static iron core 41 produce electromagnetic attraction and attract dynamic iron core 24, and be with bridge terminal assemblies 23 action: normally closed interlock disconnects, and normally open contact closes, and both are interlocks.When solenoid 42 power-off, electromagnetic attraction disappears, and dynamic iron core discharges under the effect of reaction spring 21, and contact is restored: normally closed interlock closes, and normally open contact disconnects.
Embodiment one
As shown in figure accompanying drawing 1 and accompanying drawing 2, a kind of sealed type D.C. contactor with high breaking capacity.External structure 1 comprises housing 11 and arc-extinguish chamber 12.
Moving system 2 comprises reaction spring 21, push rod 22, bridge terminal assemblies 23 and dynamic iron core 24.
Contact system 3 comprises contact assembly 31.
Magnetic circuit system 4 comprises static iron core 41 and solenoid 42.
Reaction spring 21 and bridge terminal assemblies 23 are arranged on push rod 22 lower end and upper end respectively; Dynamic iron core 24 is arranged on solenoid 42 inside and is connected with push rod 22.
Contact assembly 31 is fixed on above solenoid 42.
Static iron core 41 is arranged on push rod 22 lower end.
Housing 11 and arc-extinguish chamber 12 form annular seal space, and aforesaid moving system 2, contact system 3 and magnetic circuit system 4 are all installed in annular seal space.
Arc-extinguish chamber 12 comprises cermet sheet 121, permanent magnet 122 and upper cover 123.
Upper cover 123 connects to merging with housing 11 and seals.Cermet sheet 121 and permanent magnet 122 are separately fixed at two ends and the both sides of upper cover 123.
Embodiment two
On the basis of embodiment one, as shown in Figure 2, permanent magnet 122 is 2 right, and every 1 to the both sides being separately fixed at upper cover 123, and points to contrary with the N pole of 1 pair of permanent magnet 122, and N pole, the same side pointing direction is identical.
Embodiment three
On the basis of embodiment two, as shown in Figure 1, moving system 2 comprises touch spring 25.Touch spring 25 upper end is connected with bottom bridge terminal assemblies 23.
Embodiment four
On the basis of embodiment three, as shown in Figure 1, bridge terminal assemblies 23 and contact assembly 31 all comprise contact.When the contact on the contact on bridge terminal assemblies 23 and contact assembly 31 contacts with each other, can turning circuit.
Embodiment five
On the basis of embodiment four, as shown in Figure 1, magnetic circuit system 4 has magnetic conductivity.Magnetic circuit system 4 comprises iron flask 43 and magnetic conductive board 44.Iron flask 43 is close to housing 11 inwall, and magnetic conductive board 44 is fixed on above solenoid 42.The effect of static iron core 41, iron flask 43 and magnetic conductive board 44 is the effect by magnetic field force, produces suction to dynamic iron core 24, thus drives push rod 22 action, and then drives the running of whole D.C. contactor.
Embodiment six
On the basis of embodiment five, as shown in Figure 1, upper cover 123 engages with housing 11, and adopts fluid sealant to sealing gap between the two.
Embodiment seven
On the basis of embodiment six, as shown in Figure 1, moving system 2 comprises porcelain seat 26 and pad 27.Porcelain seat 26 is arranged between the bottom at push rod 22 top and bridge terminal assemblies 23 center.Pad 27 is arranged between the top at push rod 22 upper end and bridge terminal assemblies 23 center.Bridge terminal assemblies 23 is fixed on push rod 22 by porcelain seat 26; Pad 27 is mainly used in the connection of element, location and fastening.
Embodiment eight
On the basis of embodiment seven, as shown in Figures 1 and 2, after solenoid 42 is energized, dynamic iron core 24 produces suction under the action of a magnetic force, drive push rod 22 and bridge terminal assemblies 23 action, the contact on the contact on bridge terminal assemblies 23 and contact assembly 31 is contacted with each other, turning circuit.Reaction spring 21 is compressed simultaneously.
After solenoid 42 power-off, electromagnetic force disappears, and reaction spring 21 is returned to the state before compression, and drive dynamic iron core 24, push rod 22 and bridge terminal assemblies 23 to reset, the contact on bridge terminal assemblies 23 separates with the contact on contact assembly 31, open circuit.
The good dynamic iron core 24 of magnetic property is equipped with in the centre of solenoid 42, and solenoid 42 is specifically arranged in the middle of iron flask 43 and magnetic conductive board 44.Because dynamic iron core 24 one end with push rod 22 (non-magnetic) is connected, so when dynamic iron core 24 is subject to magnetic field force driving, push rod 22 and other elements connected can be driven to move.
Static iron core 41 is arranged in the middle of the bottom of solenoid 42.Contact assembly 31 (each 1 of left and right) and mounting bracket are arranged on the top of solenoid 42 from top to bottom successively.Contact assembly 31 is fixed by screws on mounting bracket.
The thickness of permanent magnet 122 and Surface field intensity determine according to the rated voltage of major loop and the size of rated current.
Embodiment nine
On the basis of embodiment eight, as shown in Figure 1, the magnetic conductive board 44 of upper cover 123 both sides and permanent magnet 122 can be symmetrical in shape, also can be asymmetric.Permanent magnet 122 is annular or rectangle on the cross section of shape.
As known by the technical knowledge, the technical program can be realized by other the embodiment not departing from its Spirit Essence or essential feature.Therefore, above-mentioned disclosed embodiment, with regard to each side, all just illustrates, is not only.Within the scope of the present invention all or be all included in the invention being equal to the change in scope of the present invention.
Claims (10)
1. there is a sealed type D.C. contactor for high breaking capacity, comprise external structure (1), moving system (2), contact system (3) and magnetic circuit system (4);
External structure (1) comprises housing (11) and arc-extinguish chamber (12);
Moving system (2) comprises reaction spring (21), push rod (22), bridge terminal assemblies (23) and dynamic iron core (24);
Contact system (3) comprises contact assembly (31);
Magnetic circuit system (4) comprises static iron core (41) and solenoid (42);
Reaction spring (21) and bridge terminal assemblies (23) are arranged on push rod (22) lower end and upper end respectively;
Dynamic iron core (24) is arranged on solenoid (42) inside and is connected with push rod (22);
Contact assembly (31) is fixed on solenoid (42) top;
Static iron core (41) is arranged on push rod (22) lower end;
It is characterized in that: housing (11) and arc-extinguish chamber (12) form annular seal space; Moving system (2), contact system (3) and magnetic circuit system (4) are all installed in annular seal space;
Arc-extinguish chamber (12) comprises cermet sheet (121), permanent magnet (122) and upper cover (123);
Upper cover (123) connects to merging with housing (11) and seals; Cermet sheet (121) and permanent magnet (122) are separately fixed at two ends and the both sides of upper cover (123).
2. the sealed type D.C. contactor with high breaking capacity according to claim 1, it is characterized in that: described permanent magnet (122) is 2 right, every 1 to the both sides being separately fixed at upper cover (123), and pointing to contrary with the N pole of 1 pair of permanent magnet (122), N pole, the same side pointing direction is identical.
3. the sealed type D.C. contactor with high breaking capacity according to claim 2, is characterized in that: described moving system (2) comprises touch spring (25); Touch spring (25) upper end is connected with bridge terminal assemblies (23) bottom.
4. the sealed type D.C. contactor with high breaking capacity according to claim 3, is characterized in that: described bridge terminal assemblies (23) and contact assembly (31) all comprise contact; When the contact on the contact on bridge terminal assemblies (23) and contact assembly (31) contacts with each other, can turning circuit.
5. the sealed type D.C. contactor with high breaking capacity according to claim 4, is characterized in that: described magnetic circuit system (4) comprises iron flask (43); Iron flask (43) is close to housing (11) inwall.
6. the sealed type D.C. contactor with high breaking capacity according to claim 5, is characterized in that: described magnetic circuit system (4) comprises magnetic conductive board (44); Magnetic conductive board (44) is fixed on solenoid (42) top.
7. the sealed type D.C. contactor with high breaking capacity according to claim 6, is characterized in that: described upper cover (123) engages with housing (11), and adopts fluid sealant to sealing gap between the two.
8. the sealed type D.C. contactor with high breaking capacity according to claim 7, is characterized in that: described moving system (2) comprises porcelain seat (26) and pad (27); Porcelain seat (26) is arranged between the bottom at push rod (22) top and bridge terminal assemblies (23) center; Pad (27) is arranged between the top at push rod (22) upper end and bridge terminal assemblies (23) center.
9. the sealed type D.C. contactor with high breaking capacity according to claim 8, it is characterized in that: after described solenoid (42) energising, dynamic iron core (24) produces suction under the action of a magnetic force, drive push rod (22) and bridge terminal assemblies (23) action, contact on contact on bridge terminal assemblies (23) and contact assembly (31) is contacted with each other, turning circuit; Reaction spring (21) is compressed simultaneously;
After solenoid (42) power-off, electromagnetic force disappears, reaction spring (21) is returned to the state before compression, dynamic iron core (24), push rod (22) and bridge terminal assemblies (23) is driven to reset, contact on bridge terminal assemblies (23) separates with the contact on contact assembly (31), open circuit.
10. the sealed type D.C. contactor with high breaking capacity according to claim 9, is characterized in that: described permanent magnet (122) cross section can be annular or rectangle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610026930.3A CN105513897A (en) | 2016-01-10 | 2016-01-10 | Sealed type direct current contactor with high breaking capacity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610026930.3A CN105513897A (en) | 2016-01-10 | 2016-01-10 | Sealed type direct current contactor with high breaking capacity |
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| Publication Number | Publication Date |
|---|---|
| CN105513897A true CN105513897A (en) | 2016-04-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610026930.3A Pending CN105513897A (en) | 2016-01-10 | 2016-01-10 | Sealed type direct current contactor with high breaking capacity |
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| Country | Link |
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| CN (1) | CN105513897A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107799359A (en) * | 2017-11-02 | 2018-03-13 | 苏州安来强电子科技有限公司 | A kind of New Magnetic Field Controlled keeps D.C. contactor |
| CN108565180A (en) * | 2018-05-24 | 2018-09-21 | 深圳巴斯巴汽车电子有限公司 | High voltage direct current relay |
| CN109300743A (en) * | 2018-08-28 | 2019-02-01 | 浙江百事宝电器股份有限公司 | A kind of D.C. contactor |
| CN110797234A (en) * | 2018-08-01 | 2020-02-14 | 比亚迪股份有限公司 | Relay with a movable contact |
| CN111971773A (en) * | 2018-02-07 | 2020-11-20 | Tdk电子股份有限公司 | Switching device for switching electrical loads |
| WO2021184340A1 (en) * | 2020-03-20 | 2021-09-23 | 华为技术有限公司 | Contact device and electromagnetic switch |
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| CN203588940U (en) * | 2013-10-23 | 2014-05-07 | 天水二一三电器有限公司 | Sealed type DC contactor |
| CN103985604A (en) * | 2014-05-30 | 2014-08-13 | 厦门宏发电力电器有限公司 | Arc extinguishing mechanism, relay frame and relay |
| US20150130568A1 (en) * | 2012-07-20 | 2015-05-14 | Linhu Wang | Sealing type automotive relay with a safety device |
| CN205376408U (en) * | 2016-01-10 | 2016-07-06 | 深圳巴斯巴科技发展有限公司 | Sealed direct current contactor with high breaking capacity |
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| US20040027776A1 (en) * | 2001-11-29 | 2004-02-12 | Riichi Uotome | Electromagnetic switching apparatus |
| CN102194611A (en) * | 2010-03-09 | 2011-09-21 | 欧姆龙株式会社 | Sealed contact device |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107799359A (en) * | 2017-11-02 | 2018-03-13 | 苏州安来强电子科技有限公司 | A kind of New Magnetic Field Controlled keeps D.C. contactor |
| CN111971773A (en) * | 2018-02-07 | 2020-11-20 | Tdk电子股份有限公司 | Switching device for switching electrical loads |
| US11742166B2 (en) | 2018-02-07 | 2023-08-29 | Tdk Electronics Ag | Switching device for switching an electrical load |
| CN108565180A (en) * | 2018-05-24 | 2018-09-21 | 深圳巴斯巴汽车电子有限公司 | High voltage direct current relay |
| CN110797234A (en) * | 2018-08-01 | 2020-02-14 | 比亚迪股份有限公司 | Relay with a movable contact |
| CN110797234B (en) * | 2018-08-01 | 2022-05-13 | 比亚迪股份有限公司 | Relay with a movable contact |
| CN109300743A (en) * | 2018-08-28 | 2019-02-01 | 浙江百事宝电器股份有限公司 | A kind of D.C. contactor |
| CN109300743B (en) * | 2018-08-28 | 2024-03-26 | 浙江百事宝电器股份有限公司 | DC contactor |
| WO2021184340A1 (en) * | 2020-03-20 | 2021-09-23 | 华为技术有限公司 | Contact device and electromagnetic switch |
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Application publication date: 20160420 |
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