CN218160073U - Direct current contactor - Google Patents
Direct current contactor Download PDFInfo
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- CN218160073U CN218160073U CN202221613310.7U CN202221613310U CN218160073U CN 218160073 U CN218160073 U CN 218160073U CN 202221613310 U CN202221613310 U CN 202221613310U CN 218160073 U CN218160073 U CN 218160073U
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- arc
- contact
- bridge
- direct current
- arc extinguishing
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Abstract
The utility model relates to a contactor technical field discloses a direct current contactor, include: a base; the arc extinguishing unit is arranged on the base and comprises a first arc extinguishing chamber and a second arc extinguishing chamber which are arranged at intervals; the arc striking bridge is arranged between the first arc extinguishing chamber and the second arc extinguishing chamber and is provided with a first fixed contact and a second fixed contact which are arranged at intervals; the contact bridge is movably arranged on one side of the arc striking bridge, and two sides of the contact bridge can be respectively abutted against the first static contact and the second static contact. The utility model has the advantages that the arc extinguishing capability of the DC contactor can be improved by simultaneously arc extinguishing through the first arc extinguishing chamber and the second arc extinguishing chamber; and this direct current contactor adopts bridge type double break contact structure, can make its structure compacter, and occupation space is littleer.
Description
Technical Field
The utility model relates to a contactor technical field refers in particular to a direct current contactor.
Background
The dc contactor is a contactor used in a dc circuit, and is mainly used for controlling a dc circuit (a main circuit, a control circuit, an excitation circuit, and the like).
The direct current contactor in the market usually uses a single-breakpoint direct current electromagnetic contactor which only has one arc extinguishing chamber, so that the arc extinguishing effect is poor; at present, although some double-breakpoint direct-current electromagnetic contactors exist in the market, the distance between two fixed contacts is long, so that the direct-current contactor is large in size and large in occupied space.
SUMMERY OF THE UTILITY MODEL
The utility model discloses having considered aforementioned problem and having made, utility model's purpose provides a direct current contactor, it carries out the arc extinguishing through two explosion chambers, and the arc extinguishing effect is better to adopt bridge type double break point contact structure, make direct current contactor structure compacter, occupation space is littleer.
In order to achieve the above object, the present invention provides a dc contactor, including:
a base;
the arc extinguishing unit is arranged on the base and comprises a first arc extinguishing chamber and a second arc extinguishing chamber which are arranged at intervals;
the arc striking bridge is arranged between the first arc extinguishing chamber and the second arc extinguishing chamber and is provided with a first static contact and a second static contact which are arranged at intervals;
and the contact bridge is movably arranged on one side of the arc ignition bridge, and two sides of the contact bridge can be respectively abutted against the first static contact and the second static contact.
According to a direct current contactor, first explosion chamber with the second explosion chamber all includes first baffle and second baffle, be provided with first arc-extinguishing groove on the first baffle, be provided with second arc-extinguishing groove on the second baffle, first arc-extinguishing groove with second arc-extinguishing groove is the dislocation and distributes.
According to the direct current contactor, the first arc extinguish chamber and the second arc extinguish chamber are respectively provided with two permanent magnets, and the two permanent magnets are respectively positioned on two sides of the contact bridge.
According to the direct current contactor, the base is provided with the first contact block, the contact bridge is provided with the second contact block, and the first contact block can be abutted against the second contact block.
According to the direct current contactor, the first contact block is provided with the latticed first protrusion, the second contact block is provided with the latticed second protrusion, and the first protrusion can be abutted to the second protrusion.
According to the direct current contactor, the contact bridge is arranged between the base and the arc striking bridge in a lifting mode, and a first reset spring is arranged between the base and the contact bridge.
According to the direct current contactor, the direct current contactor further comprises an electromagnetic unit, wherein the electromagnetic unit comprises a support, a coil, a magnetic core and an adsorption block, the support is fixedly connected with the base, the coil is wound on the support, and the adsorption block is arranged at the bottom of the support; one end of the magnetic core is slidably arranged in the support in a penetrating mode and can be abutted to the adsorption block, and the other end of the magnetic core is connected with the contact bridge through a connecting rod.
According to the direct current contactor, the connecting rod is arranged in the contact bridge in a penetrating mode, the connecting rod is far away from one end of the magnetic core is provided with the limiting block, and the limiting block is provided with the second reset spring between the contact bridge.
According to the direct current contactor, the arc extinguishing unit still includes the shell, the shell has first chamber and the second chamber that holds, first explosion chamber sets up in the first chamber that holds, the second explosion chamber sets up in the second holds the chamber.
According to the direct current contactor, be provided with a plurality of louvres on the shell, it is a plurality of the louvre is the interval setting.
The utility model discloses following beneficial effect has:
the arc extinguishing capability of the direct current contactor can be improved by simultaneously extinguishing the arc through the first arc extinguishing chamber and the second arc extinguishing chamber; the direct current contactor adopts a bridge type double-breakpoint structure, so that the structure is more compact, and the occupied space is smaller; the first arc extinguishing grooves and the second arc extinguishing grooves are distributed in a staggered mode, so that the arc extinguishing distance can be increased, and the arc extinguishing capability of the direct current contactor is further improved; through setting up two permanent magnets in the both sides of contact bridge, carry out the magnetic blowout arc extinguishing, can promote this direct current contactor's arc extinguishing ability.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the housing of FIG. 1 with the housing removed;
FIG. 3 is a cross-sectional view of FIG. 1;
FIG. 4 is an enlarged view at A in FIG. 3;
fig. 5 is a schematic structural diagram of a first arc-extinguishing chamber of the present invention;
fig. 6 is a schematic structural diagram of the first contact block of the present invention.
In the figure: 100. a base; 110. a first contact block; 111. a first protrusion; 200. an arc extinguishing unit; 210. a first arc-extinguishing chamber; 211. a first separator; 212. a second separator; 213. a first arc chute; 214. a second arc chute; 215. a permanent magnet; 220. a second arc extinguishing chamber; 230. a housing; 231. heat dissipation holes; 300. an arc ignition bridge; 310. a first fixed contact; 320. a second fixed contact; 400. a contact bridge; 410. a second contact block; 411. a second protrusion; 420. a first return spring; 430. a second return spring; 500. an electromagnetic unit; 510. a support; 520. a coil; 530. a magnetic core; 531. a connecting rod; 532. a limiting block; 540. and (5) adsorbing the block.
Detailed Description
The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.
As shown in fig. 1 to 6, a dc contactor includes a base 100, an arc extinguishing unit 200, an arc striking bridge 300, and a contact bridge 400. The arc extinguishing unit 200 is arranged on the base 100 and comprises a first arc extinguishing chamber 210 and a second arc extinguishing chamber 220 which are arranged at intervals; the arc striking bridge 300 is arranged between the first arc extinguish chamber 210 and the second arc extinguish chamber 220, and is provided with a first fixed contact 310 and a second fixed contact 320 which are arranged at intervals; the contact bridge 400 is movably disposed at one side of the arc striking bridge 300, and two sides of the contact bridge 400 can be respectively abutted against the first fixed contact 310 and the second fixed contact 320. The arc extinguishing capability of the direct current contactor can be improved by simultaneously performing arc extinguishing through the first arc extinguishing chamber 210 and the second arc extinguishing chamber 220; and the first static contact 310 and the second static contact 320 are both arranged on the arc striking bridge 300, and the two static contacts are close to each other, that is, the direct current contactor adopts a bridge type double-breakpoint structure, so that the structure is more compact, and the occupied space is smaller.
The first arc-extinguishing chamber 210 and the second arc-extinguishing chamber 220 are both provided with two permanent magnets 215, and the two permanent magnets 215 are respectively located at two sides of the contact bridge 400. By disposing the two permanent magnets 215 on both sides of the contact bridge 400, magnetic quenching is performed, and the arc quenching capability of the dc contactor can be improved. Preferably, two of the permanent magnets 215 are located on both sides of the contact position of the contact bridge 400 and the first stationary contact 310, and the other two permanent magnets 215 are located on both sides of the contact position of the contact bridge 400 and the second stationary contact 320.
The base 100 is provided with a first contact block 110, the contact bridge 400 is provided with a second contact block 410, and the first contact block 110 can abut against the second contact block 410. The first contact block 110 and the second contact block 410 are abutted to communicate with circuits on two sides of the direct current contactor, so that conduction is realized.
The first contact block 110 is provided with a first grid-shaped protrusion 111, the second contact block 410 is provided with a second grid-shaped protrusion 411, and the first protrusion 111 can abut against the second protrusion 411. The contact area of the first contact block 110 and the second contact block 410 can be increased, the first contact block 110 and the second contact block 410 can be fully contacted, and poor contact is avoided.
The contact bridge 400 is disposed between the base 100 and the arc striking bridge 300 to be liftable, and a first return spring 420 is disposed between the base 100 and the contact bridge 400. The first return spring 420 may urge the contact bridge 400 to return, i.e., urge the contact bridge 400 into abutment with the arc ignition bridge 300.
The electromagnetic unit 500 is further included, the electromagnetic unit 500 includes a bracket 510, a coil 520, a magnetic core 530 and an adsorption block 540, the bracket 510 is fixedly connected with the base 100, the coil 520 is wound on the bracket 510, and the adsorption block 540 is arranged at the bottom of the bracket 510; one end of the magnetic core 530 is slidably inserted into the holder 510 and can be abutted against the suction block 540, and the other end of the magnetic core 530 is connected to the contact bridge 400 through the link 531. When the coil 520 is electrified, the magnetic core 530 obtains magnetism and is abutted to the adsorption block 540 under the action of magnetic force, and simultaneously drives the contact bridge 400 to move, so that the contact bridge 400 is separated from the arc striking bridge 300, and the first contact block 110 is abutted to the second contact block 410, thereby realizing the conduction of a circuit; when the coil 520 is de-energized, the magnetic core 530 loses magnetism, the magnetic force between the two disappears, the magnetic core 530 can be separated from the adsorption block 540, and the contact bridge 400 is connected with the arc striking bridge 300 under the thrust action of the first return spring 420 to extinguish the arc.
The connecting rod 531 is inserted into the contact bridge 400, a limiting block 532 is disposed at an end of the connecting rod 531 away from the magnetic core 530, and a second return spring 430 is disposed between the limiting block 532 and the contact bridge 400. The second return spring 430 may urge the core 530 to return, i.e., urge the core 530 to be separated from the adsorption block 540. In this embodiment, when the coil 520 is energized, the magnetic core 530 obtains magnetism and abuts against the attraction block 540 under the action of magnetic force, the contact bridge 400 is separated from the arc striking bridge 300 under the action of the thrust of the second return spring 430 and gradually approaches the base 100 until the first contact block 110 abuts against the second contact block 410, and in this process, the first return spring 420 can provide a buffering force, so as to reduce the impact when the first contact block 110 abuts against the second contact block 410 and prolong the service life of the dc contactor.
The arc extinguishing unit 200 further includes a housing 230, the housing 230 having a first receiving cavity in which the first arc extinguishing chamber 210 is disposed and a second receiving cavity in which the second arc extinguishing chamber 220 is disposed. It adopts closed structural design, can completely cut off the dust, prolongs this direct current contactor's life. Specifically, first explosion chamber 210 and second explosion chamber 220 are overall structure design, when guaranteeing the part uniformity, can also simplify the assembly degree of difficulty that reduces this direct current contactor.
The housing 230 is provided with a plurality of heat dissipation holes 231, and the heat dissipation holes 231 are spaced apart from each other. The heat dissipation holes 231 perform a heat dissipation function, and can quickly dissipate heat generated during an arc extinguishing process.
The present embodiment provides a dc contactor, which includes a base 100, an arc extinguishing unit 200, an arc striking bridge 300, and a contact bridge 400. Arc extinguishing is performed simultaneously through the first arc extinguishing chamber 210 and the second arc extinguishing chamber 220, so that the arc extinguishing capability of the direct current contactor can be improved; and this direct current contactor adopts the two breakpoint structures of bridge type, can make its structure compacter, and occupation space is littleer.
The technical solutions of the present invention have been described in detail with reference to the accompanying drawings, and the described embodiments are used to help understand the ideas of the present invention. The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the claims.
It should be noted that all the directional indicators (such as upper, lower, left, right, front, and rear … …) in the embodiments of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.
Furthermore, the descriptions in the present application as to "first," "second," "a," etc. are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit ly indicating a number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present application, unless expressly stated or limited otherwise, the terms "connected" and "fixed" are to be construed broadly, e.g., "fixed" may be fixedly connected or detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In addition, the technical solutions between the embodiments of the present invention can be combined with each other, but it is necessary to be able to be realized by a person having ordinary skill in the art as a basis, and when the technical solutions are contradictory or cannot be realized, the combination of such technical solutions should be considered to be absent, and is not within the protection scope of the present invention.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Claims (10)
1. A DC contactor, comprising:
a base;
the arc extinguishing unit is arranged on the base and comprises a first arc extinguishing chamber and a second arc extinguishing chamber which are arranged at intervals;
the arc striking bridge is arranged between the first arc extinguishing chamber and the second arc extinguishing chamber and is provided with a first static contact and a second static contact which are arranged at intervals;
and the contact bridge is movably arranged on one side of the arc ignition bridge, and two sides of the contact bridge can be respectively abutted against the first static contact and the second static contact.
2. The direct current contactor according to claim 1, wherein the first arc-extinguishing chamber and the second arc-extinguishing chamber each comprise a first partition plate and a second partition plate, the first partition plate is provided with a first arc-extinguishing groove, the second partition plate is provided with a second arc-extinguishing groove, and the first arc-extinguishing groove and the second arc-extinguishing groove are distributed in a staggered manner.
3. The direct current contactor according to claim 1, wherein two permanent magnets are disposed on each of the first arc-extinguishing chamber and the second arc-extinguishing chamber, and the two permanent magnets are respectively disposed on two sides of the contact bridge.
4. The direct current contactor according to claim 1, wherein a first contact block is disposed on the base, a second contact block is disposed on the contact bridge, and the first contact block is capable of abutting against the second contact block.
5. The direct current contactor according to claim 4, wherein the first contact block is provided with a first protrusion in a grid shape, the second contact block is provided with a second protrusion in a grid shape, and the first protrusion can abut against the second protrusion.
6. The DC contactor as claimed in claim 4, wherein the contact bridge is disposed between the base and the arc striking bridge in a liftable manner, and a first return spring is disposed between the base and the contact bridge.
7. The direct current contactor according to claim 1, further comprising an electromagnetic unit, wherein the electromagnetic unit comprises a bracket, a coil, a magnetic core and an adsorption block, the bracket is fixedly connected with the base, the coil is wound on the bracket, and the adsorption block is arranged at the bottom of the bracket; one end of the magnetic core is slidably arranged in the support in a penetrating mode and can be abutted to the adsorption block, and the other end of the magnetic core is connected with the contact bridge through a connecting rod.
8. The direct current contactor according to claim 7, wherein the connecting rod is inserted into the contact bridge, and a limiting block is disposed on an end of the connecting rod away from the magnetic core, and a second return spring is disposed between the limiting block and the contact bridge.
9. The direct current contactor according to claim 1, wherein the arc extinguishing unit further comprises a housing, the housing has a first accommodating chamber and a second accommodating chamber, the first arc extinguishing chamber is disposed in the first accommodating chamber, and the second arc extinguishing chamber is disposed in the second accommodating chamber.
10. The direct current contactor as claimed in claim 9, wherein said housing has a plurality of heat dissipating holes, and said heat dissipating holes are spaced apart from each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221613310.7U CN218160073U (en) | 2022-06-24 | 2022-06-24 | Direct current contactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221613310.7U CN218160073U (en) | 2022-06-24 | 2022-06-24 | Direct current contactor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218160073U true CN218160073U (en) | 2022-12-27 |
Family
ID=84577960
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221613310.7U Active CN218160073U (en) | 2022-06-24 | 2022-06-24 | Direct current contactor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218160073U (en) |
-
2022
- 2022-06-24 CN CN202221613310.7U patent/CN218160073U/en active Active
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| GR01 | Patent grant |