CN214068640U - Non-polar arc blowing structure for contactor and contactor thereof - Google Patents
Non-polar arc blowing structure for contactor and contactor thereof Download PDFInfo
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- CN214068640U CN214068640U CN202022168821.XU CN202022168821U CN214068640U CN 214068640 U CN214068640 U CN 214068640U CN 202022168821 U CN202022168821 U CN 202022168821U CN 214068640 U CN214068640 U CN 214068640U
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- permanent magnet
- magnetic conduction
- conduction frame
- ceramic cover
- contactor
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Abstract
The utility model relates to the technical field of contactors, in particular to a non-polar arc blowing structure for a contactor and a contactor thereof, which comprises a ceramic cover, a yoke iron plate, a static contact and a moving point plate; an arc extinguishing chamber is formed between the ceramic cover and the yoke plate; one end of the static contact extends into and is fixed in the arc extinguishing chamber; the moving point plate is movably arranged in the arc extinguishing chamber and is used for being in contact with the fixed contact; a first magnetic conduction frame and a second magnetic conduction frame are respectively arranged on two sides of the ceramic cover in the length direction; a first permanent magnet and a second permanent magnet are respectively arranged on the two sides of the outer part of the ceramic cover in the width direction; the first permanent magnet and the second permanent magnet are both fixed between the first magnetic conduction frame and the second magnetic conduction frame. The utility model discloses first permanent magnet and second permanent magnet form the magnetic flow return circuit through first magnetic conduction frame and second magnetic conduction frame, act on the electric arc between the inside contact of arc extinguishing cavity to reach the effect of arc extinguishing.
Description
Technical Field
The utility model relates to a contactor technical field, concretely relates to contactor is with nonpolarity arc-blowing structure and contactor thereof.
Background
A contactor is an electronic control device having a control system (also known as an input loop) and a controlled system (also known as an output loop), typically used in automatic control circuits, which is actually an "automatic switch" that uses a small current to control a large current. Therefore, the circuit plays the roles of automatic regulation, safety protection, circuit conversion and the like.
The direct current contactor is one of contactors, and most of the existing direct current contactors adopt a movable spring direct-acting type (also called a solenoid direct-acting type) scheme, and the principle is that the direct current contactor is driven by a coil, electromagnetic force is generated through a magnetic circuit with a certain shape surrounding the periphery, and initial kinetic energy is provided for attraction of product contacts.
The contactor can produce electric arc in the process of actuation and breaking, the higher the load voltage that is connected, the harder the electric arc is to break, thus can lead to the contact can't be in time separated completely, the electric arc breaking capacity of contactor is the important standard of measuring contactor performance, how to improve the arc extinguishing capacity of contactor, is the problem that needs to solve at present.
SUMMERY OF THE UTILITY MODEL
The utility model aims at the above-mentioned among the prior art not enough, provide a contactor is with nonpolarity arc-blowing structure and contactor thereof.
The purpose of the utility model is realized through the following technical scheme: a non-polar arc blowing structure for a contactor comprises a ceramic cover, a yoke iron plate, a static contact and a moving point plate; an arc extinguishing chamber is formed between the ceramic cover and the yoke plate; one end of the static contact extends into and is fixed in the arc extinguishing chamber; the moving point plate is movably arranged in the arc extinguishing chamber and is used for being in contact with the fixed contact;
a first magnetic conduction frame and a second magnetic conduction frame are respectively arranged on two sides of the ceramic cover in the length direction; a first permanent magnet and a second permanent magnet are respectively arranged on the two sides of the outer part of the ceramic cover in the width direction; the first permanent magnet and the second permanent magnet are both fixed between the first magnetic conduction frame and the second magnetic conduction frame.
The utility model is further provided with that the first magnetic conduction frame is provided with a first limiting block; the second magnetic conduction frame is provided with a second limiting block; the first permanent magnet and the second permanent magnet are both fixed between the first limiting block and the second limiting block.
The utility model discloses further set up as, first permanent magnet is opposite towards the polarity of ceramic cover one side and the polarity of second permanent magnet towards ceramic cover one side.
The utility model discloses further set up as, the inside packing of arc extinguishing chamber has inert gas or hydrogen or the mist that contains inert gas.
A contactor comprises a ceramic cover, a yoke iron plate, a bracket, a static contact, a moving point plate and a moving spring assembly; an arc extinguishing chamber is formed between the ceramic cover and the yoke plate; one end of the static contact extends into and is fixed in the arc extinguishing chamber; the bracket is arranged at the bottom of the yoke iron plate; the movable spring assembly comprises a push rod and a magnetic circuit assembly; the magnetic circuit component is used for driving the push rod to move so as to enable the moving point plate to be in contact with the fixed contact; the magnetic circuit assembly is arranged on the bracket;
a first magnetic conduction frame and a second magnetic conduction frame are respectively arranged on two sides of the ceramic cover in the length direction; a first permanent magnet and a second permanent magnet are respectively arranged on the two sides of the outer part of the ceramic cover in the width direction; the first permanent magnet and the second permanent magnet are both fixed between the first magnetic conduction frame and the second magnetic conduction frame.
The utility model is further provided with that the first magnetic conduction frame is provided with a first limiting block; the second magnetic conduction frame is provided with a second limiting block; the first permanent magnet and the second permanent magnet are both fixed between the first limiting block and the second limiting block.
The utility model discloses further set up as, first permanent magnet is opposite towards the polarity of ceramic cover one side and the polarity of second permanent magnet towards ceramic cover one side.
The utility model is further arranged in that the magnetic circuit component comprises a static iron core, a movable iron core and a coil which are all arranged on the bracket; the coil is wound outside the static iron core; the movable iron core is arranged at the bottom of the static iron core; one end of the push rod is connected with the movable iron core; the other end of the push rod is connected with the moving point plate.
The utility model discloses further set up as, the inside packing of arc extinguishing chamber has inert gas or hydrogen or the mist that contains inert gas.
The utility model has the advantages that: the utility model discloses an increase two magnetic conduction framves respectively in the both sides of ceramic cover length direction, increase two permanent magnets respectively in ceramic cover width direction's both sides, two magnets adsorb on the magnetic conduction frame, first permanent magnet and second permanent magnet form the magnetic flux return circuit through first magnetic conduction frame and second magnetic conduction frame, act on the electric arc between the contact inside the arc extinguishing cavity, rule according to the left hand, no matter how the direction of current is, the magnetic field all can blow the electric arc to one side of ceramic length direction to the lorentz power that the electric arc produced, ceramic material and inside mist's dual function in coordination, the effect of arc extinguishing is reached.
Drawings
The invention is further described with the aid of the accompanying drawings, in which, however, the embodiments do not constitute any limitation to the invention, and for a person skilled in the art, other drawings can be derived from the following drawings without inventive effort.
Fig. 1 is a cross-sectional view of the contactor of the present invention;
FIG. 2 is a schematic structural diagram of a non-polar arc-blowing structure for the contactor of the present invention;
FIG. 3 is a schematic structural view of another view angle of the non-polar arcing structure for the contactor of the present invention;
wherein: 1. a ceramic cover; 11. an arc-extinguishing chamber; 2. a yoke iron plate; 3. a support; 41. static contact; 42. A moving point plate; 5. a push rod; 61. a stationary iron core; 62. a movable iron core; 7. a coil; 81. a first magnetic conduction frame; 82. a second magnetic conduction frame; 83. a first stopper; 84. a second limiting block; 91. a first permanent magnet; 92. a second permanent magnet.
Detailed Description
The invention will be further described with reference to the following examples.
As can be seen from fig. 1 to 3; the nonpolar arc blowing structure for the contactor in the embodiment comprises a ceramic cover 1, a yoke plate 2, a static contact 41 and a moving point plate 42; an arc extinguishing chamber 11 is formed between the ceramic cover 1 and the yoke plate 2; one end of the static contact 41 extends into and is fixed in the arc extinguishing chamber 11; the moving point plate 42 is movably arranged in the arc extinguishing chamber 11 and is used for contacting with the static contact 41;
a first magnetic conduction frame 81 and a second magnetic conduction frame 82 are respectively arranged on two sides of the ceramic cover 1 in the length direction; a first permanent magnet 91 and a second permanent magnet 92 are respectively arranged on the two sides of the outer part of the ceramic cover 1 in the width direction; the first permanent magnet 91 and the second permanent magnet 92 are both fixed between the first magnetic conduction frame 81 and the second magnetic conduction frame 82.
Specifically, the nonpolar arc blowing structure for the contactor according to this embodiment is configured such that, on the basis of a structure in which inert gas or hydrogen gas or a mixed gas containing inert gas is filled into the arc extinguishing chamber 11 of the conventional ceramic cover 1, two magnetic conduction frames are respectively added on both sides of the ceramic cover 1 in the length direction, two permanent magnets are respectively added on both sides of the ceramic cover 1 in the width direction, the two magnets are adsorbed on the magnetic conduction frames, the first permanent magnet 91 and the second permanent magnet 92 form a magnetic flux loop through the first magnetic conduction frame 81 and the second magnetic conduction frame 82, and act on an arc between contacts inside the arc extinguishing chamber 11.
In the non-polar arc blowing structure for the contactor according to this embodiment, the first magnetic conduction frame 81 is provided with a first limiting block 83; the second magnetic conduction frame 82 is provided with a second limiting block 84; the first permanent magnet 91 and the second permanent magnet 92 are fixed between the first stopper 83 and the second stopper 84. The first permanent magnet 91 and the second permanent magnet 92 are limited by the arrangement.
In the non-polar arc-blowing structure for the contactor according to this embodiment, the polarity of the first permanent magnet 91 facing the ceramic cover 1 is opposite to the polarity of the second permanent magnet 92 facing the ceramic cover 1. Through the above arrangement, the first permanent magnet 91 and the second permanent magnet 92 can form a magnetic flux loop through the first magnetic conduction frame 81 and the second magnetic conduction frame 82.
In the non-polar arc-blowing structure for the contactor according to the present embodiment, the arc-extinguishing chamber 11 is filled with an inert gas or hydrogen gas or a mixed gas containing an inert gas. The arc extinguishing capability of the contactor can be enhanced through the arrangement.
The contactor according to the embodiment includes a ceramic cover 1, a yoke plate 2, a bracket 3, a fixed contact 41, a moving point plate 42 and a moving spring assembly; an arc extinguishing chamber 11 is formed between the ceramic cover 1 and the yoke plate 2; one end of the static contact 41 extends into and is fixed in the arc extinguishing chamber 11; the bracket 3 is arranged at the bottom of the yoke iron plate 2; the movable spring assembly comprises a push rod 5 and a magnetic circuit assembly; the magnetic circuit component is used for driving the push rod 5 to move so as to enable the moving point plate 42 to be in contact with the fixed contact 41; the magnetic circuit assembly is arranged on the bracket 3;
a first magnetic conduction frame 81 and a second magnetic conduction frame 82 are respectively arranged on two sides of the ceramic cover 1 in the length direction; a first permanent magnet 91 and a second permanent magnet 92 are respectively arranged on the two sides of the outer part of the ceramic cover 1 in the width direction; the first permanent magnet 91 and the second permanent magnet 92 are both fixed between the first magnetic conduction frame 81 and the second magnetic conduction frame 82.
In the contactor according to this embodiment, the magnetic circuit assembly includes a stationary core 61, a movable core 62, and a coil 7, which are all disposed on the support 3; the coil 7 is wound outside the static iron core 61; the movable iron core 62 is arranged at the bottom of the static iron core 61; one end of the push rod 5 is connected with the movable iron core 62; the other end of the push rod 5 is connected with a moving point plate 42.
Specifically, in the contactor according to this embodiment, an arc extinguishing chamber 11 is formed between the ceramic cover 1 and the yoke plate 2, the stationary contact 41 is fixed at the top of the arc extinguishing chamber 11, the moving-point plate 42 moves in the arc extinguishing chamber 11, the push rod 5 penetrates into the arc extinguishing chamber 11 from the bottom of the yoke plate 2 and then is connected to the moving-point plate 42, when the coil 7 is energized, the electromagnetic force generated by the magnetic circuit component moves the moving iron core 62 in the direction of closing the magnetic circuit, that is, moves toward the stationary iron core 61, so that the moving iron core 62 drives the push rod 5 to move upward, and the moving-point plate 42 is in contact with the stationary contact 41;
in addition, this embodiment is through increasing two magnetic conduction frames respectively in ceramic cover 1 length direction's both sides, increase two permanent magnets respectively in ceramic cover 1 width direction's both sides, two magnets adsorb on the magnetic conduction frame, first permanent magnet 91 and second permanent magnet 92 form the magnetic flux return circuit through first magnetic conduction frame 81 and second magnetic conduction frame 82, act on the electric arc between the contact inside arc extinguishing chamber 11, decide according to the left-hand rule, no matter how current direction, the lorentz force that the magnetic field produced the electric arc all can blow the electric arc to one side of ceramic length direction, cooperate ceramic material and inside mist's dual function, reach the effect of arc extinguishing.
In the contactor according to this embodiment, the first magnetic conduction frame 81 is provided with a first limiting block 83; the second magnetic conduction frame 82 is provided with a second limiting block 84; the first permanent magnet 91 and the second permanent magnet 92 are fixed between the first stopper 83 and the second stopper 84. The first permanent magnet 91 and the second permanent magnet 92 are limited by the arrangement.
In the contactor according to this embodiment, the polarity of the first permanent magnet 91 facing the ceramic cover 1 is opposite to the polarity of the second permanent magnet 92 facing the ceramic cover 1. Through the above arrangement, the first permanent magnet 91 and the second permanent magnet 92 can form a magnetic flux loop through the first magnetic conduction frame 81 and the second magnetic conduction frame 82.
In the contactor according to this embodiment, the arc extinguishing chamber 11 is filled with an inert gas or hydrogen gas or a mixed gas containing an inert gas. The arc extinguishing capability of the contactor can be enhanced through the arrangement.
It should be finally noted that the above embodiments are only intended to illustrate the technical solutions of the present invention, and not to limit the scope of the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present invention can be modified or replaced with equivalents without departing from the spirit and scope of the technical solutions of the present invention.
Claims (9)
1. The utility model provides a contact utensils nonpolarity arc-blowing structure which characterized in that: comprises a ceramic cover (1), a yoke plate (2), a static contact (41) and a moving point plate (42); an arc extinguishing chamber (11) is formed between the ceramic cover (1) and the yoke plate (2); one end of the static contact (41) extends into and is fixed in the arc extinguishing chamber (11); the moving point plate (42) is movably arranged in the arc extinguishing chamber (11) and is used for being in contact with the static contact (41);
a first magnetic conduction frame (81) and a second magnetic conduction frame (82) are respectively arranged on two sides of the ceramic cover (1) in the length direction; a first permanent magnet (91) and a second permanent magnet (92) are respectively arranged on two sides of the outer part of the ceramic cover (1) in the width direction; the first permanent magnet (91) and the second permanent magnet (92) are fixed between the first magnetic conduction frame (81) and the second magnetic conduction frame (82).
2. The nonpolar blowing structure for the contactor as recited in claim 1, wherein: the first magnetic conduction frame (81) is provided with a first limiting block (83); the second magnetic conduction frame (82) is provided with a second limiting block (84); the first permanent magnet (91) and the second permanent magnet (92) are fixed between the first limiting block (83) and the second limiting block (84).
3. The nonpolar blowing structure for the contactor as recited in claim 1, wherein: the polarity of one side, facing the ceramic cover (1), of the first permanent magnet (91) is opposite to the polarity of one side, facing the ceramic cover (1), of the second permanent magnet (92).
4. The nonpolar blowing structure for the contactor as recited in claim 1, wherein: the arc extinguishing chamber (11) is filled with inert gas or hydrogen.
5. A contactor, characterized by: the device comprises a ceramic cover (1), a yoke plate (2), a bracket (3), a static contact (41), a moving point plate (42) and a moving spring component; an arc extinguishing chamber (11) is formed between the ceramic cover (1) and the yoke plate (2); one end of the static contact (41) extends into and is fixed in the arc extinguishing chamber (11); the bracket (3) is arranged at the bottom of the yoke iron plate (2); the movable spring assembly comprises a push rod (5) and a magnetic circuit assembly; the magnetic circuit component is used for driving the push rod (5) to move so as to enable the moving point plate (42) to be in contact with the fixed contact (41); the magnetic circuit component is arranged on the bracket (3);
a first magnetic conduction frame (81) and a second magnetic conduction frame (82) are respectively arranged on two sides of the ceramic cover (1) in the length direction; a first permanent magnet (91) and a second permanent magnet (92) are respectively arranged on two sides of the outer part of the ceramic cover (1) in the width direction; the first permanent magnet (91) and the second permanent magnet (92) are fixed between the first magnetic conduction frame (81) and the second magnetic conduction frame (82).
6. A contactor according to claim 5, characterized in that: the first magnetic conduction frame (81) is provided with a first limiting block (83); the second magnetic conduction frame (82) is provided with a second limiting block (84); the first permanent magnet (91) and the second permanent magnet (92) are fixed between the first limiting block (83) and the second limiting block (84).
7. A contactor according to claim 5, characterized in that: the polarity of one side, facing the ceramic cover (1), of the first permanent magnet (91) is opposite to the polarity of one side, facing the ceramic cover (1), of the second permanent magnet (92).
8. A contactor according to claim 5, characterized in that: the magnetic circuit component comprises a static iron core (61), a movable iron core (62) and a coil (7) which are all arranged on the bracket (3); the coil (7) is wound outside the static iron core (61); the movable iron core (62) is arranged at the bottom of the static iron core (61); one end of the push rod (5) is connected with the movable iron core (62); the other end of the push rod (5) is connected with the moving point plate (42).
9. A contactor according to claim 5, characterized in that: the arc extinguishing chamber (11) is filled with inert gas or hydrogen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022168821.XU CN214068640U (en) | 2020-09-28 | 2020-09-28 | Non-polar arc blowing structure for contactor and contactor thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022168821.XU CN214068640U (en) | 2020-09-28 | 2020-09-28 | Non-polar arc blowing structure for contactor and contactor thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214068640U true CN214068640U (en) | 2021-08-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022168821.XU Active CN214068640U (en) | 2020-09-28 | 2020-09-28 | Non-polar arc blowing structure for contactor and contactor thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214068640U (en) |
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- 2020-09-28 CN CN202022168821.XU patent/CN214068640U/en active Active
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