CN203707033U - DC contactor - Google Patents
DC contactor Download PDFInfo
- Publication number
- CN203707033U CN203707033U CN201420037005.7U CN201420037005U CN203707033U CN 203707033 U CN203707033 U CN 203707033U CN 201420037005 U CN201420037005 U CN 201420037005U CN 203707033 U CN203707033 U CN 203707033U
- Authority
- CN
- China
- Prior art keywords
- contactor
- push rod
- contact
- ceramic member
- contact points
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
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- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The utility model discloses a DC contactor which comprises two contact points arranged in a sealed shell, a contact piece, and a reciprocating driving mechanism. The contact piece is fixed at one end of a push rod. The reciprocating driving mechanism can drive the push rod to move in a reciprocating way to connect and disconnect the contact piece and the two contact points at the same time. One side face of the contact piece close to the contact points is fixedly provided with a ceramic piece. According to the DC contactor, the ceramic piece is added to the contact piece between the two contact points, the expanded length of electric arcs in the same space is elongated to 2 to 3 times of the original length, the electric arcs are extinguished before interconnection, and the reverse disconnection and connection ability of the DC contactor is greatly enhanced.
Description
Technical field
The utility model relates to a kind ofly can control interrupted electronic component automatically, relates to specifically a kind of D.C. contactor.
Background technology
At present, on market, existing D.C. contactor is generally made up of arc control device, running part, coil etc., and this type of contactor has the ability of break-make DC load under high voltage.In order to improve the arc extinction performance of this type of contactor, this type of contactor has generally adopted the technology of magnetic quenching.Traditional magnetic quenching has utilized galvanic directivity, with magnetic field, electric arc is blown toward the lateral direction of contactor, makes electric arc elongate and extinguish.But this type of contactor is in the time oppositely disconnecting, and electric arc is expanded in the plane at two places, contact between two contacts, last conducting mutually, causes electric arc not extinguish in time, thereby the reverse make-break capacity that causes this D.C. contactor is a lot of a little less than than the forward break-make life-span.
Summary of the invention
In order to overcome above-mentioned defect, the utility model provides a kind of D.C. contactor, can greatly improve the reverse make-break capacity of D.C. contactor.
The utility model for the technical scheme that solves its technical problem and adopt is: a kind of D.C. contactor, comprise two contact points, contact chip and the reciprocating drive mechanism be located in seal casinghousing, described contact chip is fixed on push rod one end, described reciprocal Drive Structure can drive described push rod reciprocating motion with by described contact chip and the connected sum disconnection simultaneously of two contact points, on the side at described contact chip near described contact point, is also installed with a ceramic member.
As further improvement of the utility model, described ceramic member is provided with some annular grooves near a side of described contact point.
As further improvement of the utility model, described annular groove is centered by the axis of described push rod.
As further improvement of the utility model, described ceramic member is provided with the circular groove of a surface metalation away from a side of described contact point, separately be provided with a sleeve, the circular groove of this ceramic member and the welding of described sleeve, described sleeve is fixedly connected with described push rod one end by screw thread.
The beneficial effects of the utility model are: this D.C. contactor has increased a ceramic member on the contact chip between two contacts, the length that forces electric arc to be expanded in identical space is elongated original 2～3 times, before electric arc is connected mutually, just they are extinguished, greatly promoted the reverse make-break capacity of D.C. contactor.
Brief description of the drawings
Fig. 1 is the utility model cross-sectional view;
Fig. 2 is ceramic member structural representation described in the utility model;
Fig. 3 is another visual angle structural representation of Fig. 2.
By reference to the accompanying drawings, make the following instructions:
Embodiment
By reference to the accompanying drawings; the utility model is elaborated; but protection range of the present utility model is not limited to following embodiment, the simple equivalence of in every case being done with the utility model claim and description changes and modifies, within all still belonging to the utility model patent covering scope.
As shown in Figure 1, 2, 3, a kind of D.C. contactor, comprise two contact points 2, contact chip 3 and the reciprocating drive mechanism be located in seal casinghousing 1, described contact chip is fixed on push rod 4 one end, described reciprocal Drive Structure can drive described push rod reciprocating motion with by described contact chip and the connected sum disconnection simultaneously of two contact points, is also installed with a ceramic member 5 on the side at described contact chip near described contact point.The setting of this ceramic member forces electric arc extension length in identical space, elongates most original 2～3 times, just allows them extinguish, thereby effectively improve the reverse make-break capacity of D.C. contactor before electric arc is connected mutually.
Preferably, described ceramic member is provided with some annular grooves 51 near a side of described contact point, to increase the extended range of electric arc.
Preferably, described annular groove is centered by the axis of described push rod.
Preferably, described ceramic member is provided with the circular groove 52 of a surface metalation away from a side of described contact point, be separately provided with a sleeve 6, the circular groove of this ceramic member and the welding of described sleeve, and described sleeve is fixedly connected with described push rod one end by screw thread.Ceramic member side is provided with the circular groove of surface metalation, to easily ceramic member is fixed on sleeve, can adopt high-temperature material welding.On sleeve and push rod, make respectively screw thread, sleeve and push rod are threaded connection fixing.
Claims (4)
1. a D.C. contactor, comprise two contact points (2), contact chip (3) and the reciprocating drive mechanism be located in seal casinghousing (1), described contact chip is fixed on push rod (4) one end, described reciprocal Drive Structure can drive described push rod reciprocating motion with by described contact chip and the connected sum disconnection simultaneously of two contact points, it is characterized in that: on the side at described contact chip near described contact point, be also installed with a ceramic member (5).
2. D.C. contactor according to claim 1, is characterized in that: described ceramic member is provided with some annular grooves (51) near a side of described contact point.
3. D.C. contactor according to claim 2, is characterized in that: described annular groove is centered by the axis of described push rod.
4. according to the D.C. contactor described in any one in claims 1 to 3, it is characterized in that: described ceramic member is provided with the circular groove (52) of a surface metalation away from a side of described contact point, separately be provided with a sleeve (6), the circular groove of this ceramic member and the welding of described sleeve, described sleeve is fixedly connected with described push rod one end by screw thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420037005.7U CN203707033U (en) | 2014-01-21 | 2014-01-21 | DC contactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420037005.7U CN203707033U (en) | 2014-01-21 | 2014-01-21 | DC contactor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203707033U true CN203707033U (en) | 2014-07-09 |
Family
ID=51057433
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420037005.7U Withdrawn - After Issue CN203707033U (en) | 2014-01-21 | 2014-01-21 | DC contactor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203707033U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104795277A (en) * | 2014-01-21 | 2015-07-22 | 昆山国力真空电器有限公司 | DC contactor |
| CN104966646A (en) * | 2015-07-03 | 2015-10-07 | 昆山国力真空电器有限公司 | Non-polar DC contactor |
| CN105895452A (en) * | 2016-05-27 | 2016-08-24 | 浙江英洛华新能源科技有限公司 | Sealed high-voltage DC relay |
-
2014
- 2014-01-21 CN CN201420037005.7U patent/CN203707033U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104795277A (en) * | 2014-01-21 | 2015-07-22 | 昆山国力真空电器有限公司 | DC contactor |
| CN104966646A (en) * | 2015-07-03 | 2015-10-07 | 昆山国力真空电器有限公司 | Non-polar DC contactor |
| CN105895452A (en) * | 2016-05-27 | 2016-08-24 | 浙江英洛华新能源科技有限公司 | Sealed high-voltage DC relay |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140709 Effective date of abandoning: 20170517 |
|
| AV01 | Patent right actively abandoned |