CN212725166U - Direct current contactor - Google Patents
Direct current contactor Download PDFInfo
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- CN212725166U CN212725166U CN202022110939.7U CN202022110939U CN212725166U CN 212725166 U CN212725166 U CN 212725166U CN 202022110939 U CN202022110939 U CN 202022110939U CN 212725166 U CN212725166 U CN 212725166U
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- contact
- cam
- iron core
- support
- armature
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Abstract
The utility model relates to a direct current contactor, including casing, support, electromagnetic system, contact system, auxiliary contact group, arc extinguishing system, electromagnetic system includes yoke, quiet iron core, coil, activity setting on the yoke and with quiet iron core matched with armature, one of armature serve and correspond auxiliary contact group department and be provided with the cam, be provided with the spring between cam and the support, the cam along with armature action and can trigger auxiliary contact group, contact system include with armature linkage complex contact frame, with contact frame linkage complex moving contact, first wiring board, set up on the support and with moving contact matched with static contact, the second wiring board of being connected with the static contact electricity, moving contact and first wiring board between be provided with the flexible coupling. The utility model has the advantages of simple structure, stable and reliable performance, long service life and good arc extinguishing effect.
Description
Technical Field
The utility model relates to a contactor technical field, concretely relates to direct current contactor.
Background
The electric pneumatic contactor takes compressed air as power and is widely applied to electric power and main circuits of internal combustion engines. In the direct current contactor used in the ultra-high current occasions of special equipment in the occasions of railways, oil fields, mines and the like, a plurality of groups of contacts adopted by auxiliary contacts are combined by a contact pushed by a push rod, and the contacts are exposed in the air and are easy to oxidize, and poor contact or burning loss caused by overlarge contact resistance is caused after oxidation; meanwhile, as a plurality of groups of contacts are pushed by one push rod, the contact positioning of the contacts is poor, and after the contact device is used for a period of time, the condition of poor contact caused by the fact that one or more groups of contacts do not act in place is easy to occur. And the DC contactor has the defects of complex structure, unreliable performance, short service life and poor arc extinguishing effect.
Disclosure of Invention
An object of the utility model is to overcome prior art's defect, provide a simple structure, stable performance is reliable, long service life, effectual direct current contactor of arc extinguishing.
In order to achieve the purpose, the utility model adopts a direct current contactor, which comprises a shell, a bracket, an electromagnetic system arranged on the bracket, a contact system, an auxiliary contact group and an arc extinguishing system arranged on the bracket, the electromagnetic system comprises a yoke iron arranged on a bracket, a static iron core arranged on the yoke iron, a coil arranged on the static iron core, and an armature iron movably arranged on the yoke iron and matched with the static iron core, a cam is arranged at one end of the armature corresponding to the auxiliary contact group, a spring is arranged between the cam and the bracket, the cam acts along with the armature and can trigger the auxiliary contact group, the contact system comprises a contact frame in linkage fit with the armature, a moving contact in linkage fit with the contact frame, a first wiring board, a fixed contact arranged on the support and matched with the moving contact, and a second wiring board electrically connected with the fixed contact, and a flexible connection is arranged between the moving contact and the first wiring board.
The beneficial effect of above-mentioned structure is: this direct current contactor passes through cam trigger auxiliary contact group, and the location effect of cam is good, can guarantee that a plurality of contacts of auxiliary contact group can contact and target in place, is favorable to improving this direct current contactor's operational reliability. And the spring is arranged between the cam and the bracket, so that the sensitivity of the cam action is improved, and the direct current contactor has the advantages of simple structure, stable and reliable performance, long service life and good arc extinguishing effect.
In particular, the cam is provided with an interference inclined plane which acts along with the cam and can be abutted against the pulley of the auxiliary contact group. The cam is provided with a contact inclined plane which can reliably push the pulley of the auxiliary contact set, so that the auxiliary contact set can be reliably connected or disconnected.
Particularly, the contact head frame is provided with a limiting part, the limiting part is internally provided with a limiting groove, the moving contact is clamped in the limiting groove and forms rotating connection and matching of the limiting part and the moving contact, and a contact spring is arranged between the contact head frame and the moving contact. The moving contact block is in the locating part to be convenient for the moving contact and the assembly of contact frame, and the contact spring can improve the contact pressure of moving contact, be favorable to improving this direct current contactor's operational reliability.
Particularly, the arc extinguishing system comprises two pole plates symmetrically arranged on two sides of the static contact, an iron core arranged in the static contact and an arc extinguishing coil arranged on the iron core, wherein two ends of the iron core are respectively connected to the two pole plates, one end of the arc extinguishing coil is connected to the static contact, and the other end of the arc extinguishing coil is connected to the second wiring board. The polar plate can play the insulating effect of separating the arc, and iron core, arc extinguishing coil can play the effect of drawing the arc to be favorable to improving this direct current contactor's arc extinguishing effect.
Drawings
Fig. 1 is a perspective view of the internal structure of the embodiment of the present invention.
Fig. 2 is a cross-sectional view of the internal structure of the embodiment of the present invention.
Detailed Description
As shown in fig. 1 and 2, an embodiment of the present invention is a dc contactor, including a housing, a support 10, an electromagnetic system 20, a contact system 30, an auxiliary contact set 11, and an arc extinguishing system 40 disposed on the support 10, where the electromagnetic system 20 includes a yoke 21 disposed on the support 10, a stationary core 22 disposed on the yoke 21, a coil 23 disposed on the stationary core 22, and an armature 24 movably disposed on the yoke 21 and matched with the stationary core 22, the armature 24 has a cam 25 disposed on a position corresponding to the auxiliary contact set 11, a spring 26 is disposed between the cam 25 and the support 10, the cam 25 moves along with the armature 24 and can trigger the auxiliary contact set 11, the contact system 30 includes a contact frame 31 in linkage matching with the armature 24, a movable contact 32 in linkage matching with the contact frame 31, and a first wiring board 33, The device comprises a fixed contact 34 arranged on the support 10 and matched with the movable contact 32, and a second wiring board 35 electrically connected with the fixed contact 34, wherein a flexible connection 36 is arranged between the movable contact 32 and the first wiring board 33. The cam 25 is provided with an abutting inclined surface 251, and the abutting inclined surface 251 moves along with the cam 25 and can abut against the pulley 111 of the auxiliary contact set 11. The cam is provided with a contact inclined plane which can reliably push the pulley of the auxiliary contact set, so that the auxiliary contact set can be reliably connected or disconnected. The contact holder 31 is provided with a limiting member 311, the limiting member 311 is provided with a limiting groove 312, the moving contact 32 is clamped in the limiting groove 312, the limiting member 311 is in rotating connection and matching with the moving contact 32, and a contact spring 37 is arranged between the contact holder 31 and the moving contact 32. The moving contact block is in the locating part to be convenient for the moving contact and the assembly of contact frame, and the contact spring can improve the contact pressure of moving contact, be favorable to improving this direct current contactor's operational reliability.
As shown in fig. 2, the arc extinguishing system 40 includes two pole plates 41 symmetrically disposed on two sides of the stationary contact 34, an iron core 42 disposed in the stationary contact 34, and an arc extinguishing coil 43 disposed on the iron core 42, two ends of the iron core 42 are respectively connected to the two pole plates 41, one end of the arc extinguishing coil 43 is connected to the stationary contact 34, and the other end of the arc extinguishing coil 43 is connected to the second wiring board 35. The polar plate can play the insulating effect of separating the arc, and iron core, arc extinguishing coil can play the effect of drawing the arc to be favorable to improving this direct current contactor's arc extinguishing effect.
This direct current contactor passes through cam trigger auxiliary contact group, and the location effect of cam is good, can guarantee that a plurality of contacts of auxiliary contact group can contact and target in place, is favorable to improving this direct current contactor's operational reliability. And the spring is arranged between the cam and the bracket, so that the sensitivity of the cam action is improved, and the direct current contactor has the advantages of simple structure, stable and reliable performance, long service life and good arc extinguishing effect.
Claims (4)
1. The utility model provides a direct current contactor, includes casing, support, sets up electromagnetic system, contact system, supplementary contact group on the support, sets up the arc extinguishing system on the support, its characterized in that: the electromagnetic system comprises a yoke arranged on a support, a static iron core arranged on the yoke, a coil arranged on the static iron core, and an armature movably arranged on the yoke and matched with the static iron core, wherein one end of the armature is provided with a cam corresponding to an auxiliary contact group, a spring is arranged between the cam and the support, the cam acts along with the armature and can trigger the auxiliary contact group, the contact system comprises a contact frame in linkage fit with the armature, a moving contact in linkage fit with the contact frame, a first wiring board, a static contact arranged on the support and matched with the moving contact, and a second wiring board electrically connected with the static contact, and a flexible connection is arranged between the moving contact and the first wiring board.
2. The dc contactor as claimed in claim 1, wherein: the cam is provided with an abutting inclined plane which acts along with the cam and can abut against the pulley of the auxiliary contact group.
3. The direct current contactor according to claim 1 or 2, characterized in that: the contact head frame on be provided with the locating part, the locating part in be provided with the spacing groove, the moving contact block in the spacing inslot, and constitute the rotating connection cooperation of locating part and moving contact, just contact head frame and moving contact between be provided with the contact spring.
4. The direct current contactor according to claim 1 or 2, characterized in that: the arc extinguishing system comprises two pole plates symmetrically arranged on two sides of the static contact, an iron core arranged in the static contact and an arc extinguishing coil arranged on the iron core, wherein two ends of the iron core are respectively connected to the two pole plates, one end of the arc extinguishing coil is connected to the static contact, and the other end of the arc extinguishing coil is connected to the second wiring board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022110939.7U CN212725166U (en) | 2020-09-23 | 2020-09-23 | Direct current contactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022110939.7U CN212725166U (en) | 2020-09-23 | 2020-09-23 | Direct current contactor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212725166U true CN212725166U (en) | 2021-03-16 |
Family
ID=74942375
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022110939.7U Active CN212725166U (en) | 2020-09-23 | 2020-09-23 | Direct current contactor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212725166U (en) |
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2020
- 2020-09-23 CN CN202022110939.7U patent/CN212725166U/en active Active
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