CN212113573U - Arc extinguishing structure of bidirectional nonpolar direct current contactor - Google Patents
Arc extinguishing structure of bidirectional nonpolar direct current contactor Download PDFInfo
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- CN212113573U CN212113573U CN202021114685.XU CN202021114685U CN212113573U CN 212113573 U CN212113573 U CN 212113573U CN 202021114685 U CN202021114685 U CN 202021114685U CN 212113573 U CN212113573 U CN 212113573U
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Abstract
The utility model discloses a two-way nonpolarity direct current contactor arc extinguishing structure, including two stationary contact groups and a movable contact group that locate in direct current contactor's arc extinguish chamber, movable contact group can the up-and-down motion realize two movable contacts and two break-make between the stationary contact, is equipped with the parallel magnetic field of perpendicular two stationary contact groups and a movable contact group place plane in the arc extinguish chamber, and the upper end of two stationary contact groups sets up and forms a pair of quiet runway to the direction of keeping away from respectively, and the both ends of movable contact group are respectively to the direction setting of keeping away from each other downwards and each other and form a pair of movable runway; the space between two static arc running tracks in the arc extinguish chamber forms a main arc extinguish chamber, and the space between the static arc running tracks on two sides and the corresponding moving arc running tracks forms two auxiliary arc extinguish chambers. The utility model discloses have the effect of two-way arc extinguishing, can realize positive negative pole commutation, simultaneously under the condition of reducing the product volume, improved the disjunction ability of product and solved the disconnected ability of the two-way electric current of direct current contactor.
Description
Technical Field
The utility model belongs to the technical field of the contactor, specific saying so relates to a two-way nonpolarity direct current contactor arc extinguishing structure.
Background
With the rapid development of the power supply industry, the switching device occupies a great position in the electrical appliance industry, and the direct current contactor with the bidirectional on-off capability becomes a new growth point in the industry.
At present, most products of direct current contactors only have unidirectional arc extinguishing capacity, use scenes are limited more, especially under most current scenes, contactors need to be matched with power batteries for use, and the power batteries need to have bidirectional breaking protection capacity when being charged and discharged.
Disclosure of Invention
In order to overcome the defects, the utility model provides a two-way nonpolarity direct current contactor arc extinguishing structure utilizes the three explosion chamber layout mode of magnetism blow and brand-new design to be equipped with the arc extinguishing bars piece and promote the arc extinguishing ability, under the condition of reducing the volume, improved the disjunction ability of product, solved the disconnected ability of the two-way current of direct current contactor.
The utility model discloses a solve the technical scheme that its technical problem adopted and be: an arc extinguishing structure of a bidirectional nonpolar direct current contactor comprises two static contact groups and a movable contact group which are arranged in an arc extinguishing chamber of the direct current contactor, wherein the lower ends of the two static contact groups respectively form static contacts with the positions of the static contact groups as upper and the positions of the movable contact groups as lower, the movable contact groups respectively form movable contacts corresponding to the two static contacts, the movable contact groups can move up and down to realize the on-off between the two movable contacts and the two static contacts, a parallel magnetic field vertical to the planes of the two static contact groups and the movable contact group is arranged in the arc extinguishing chamber, the upper ends of the two static contact groups are respectively arranged in the direction away from the arc extinguishing chamber to form a pair of static arc runners, and the two ends of the movable contact groups are respectively arranged in the direction away from the arc extinguishing chamber to form a pair of movable arc runners; the arc extinguishing chamber is internally provided with two static arc running channels, the space between the static arc running channels forms a main arc extinguishing chamber, and the space between the static arc running channels and the corresponding moving arc running channels on two sides forms two auxiliary arc extinguishing chambers.
As a further improvement of the utility model, both sides are equipped with the permanent magnet that sets up with the magnetic field direction around the plane of static contact group and a movable contact group place.
As a further improvement, a plurality of main grid pieces are arranged in the main arc extinguish chamber, and a plurality of auxiliary grid pieces are arranged in the auxiliary arc extinguish chamber.
As a further improvement of the utility model, a plurality of the main grid piece is along perpendicular a pair of the direction interval setting of movable contact line.
As a further improvement of the utility model, it is a plurality of the direction interval setting of auxiliary grid piece along perpendicular corresponding stationary contact and movable contact line.
As a further improvement of the utility model, the static running arc path is symmetrically arranged, and the included angle between the static running arc path and the static running arc path is an acute angle or an obtuse angle.
As a further improvement of the utility model, the running arc is symmetrically arranged, and the included angle between the two is an acute angle or an obtuse angle.
The utility model has the advantages that: this two-way nonpolarity direct current contactor arc extinguishing structure is divided into three explosion chamber with the explosion chamber through setting up the permanent magnet and running the arc way, and a main explosion chamber and two assistance explosion chambers promptly, no matter how transform of magnetic field in the explosion chamber, electric arc all enters main explosion chamber or two assistance explosion chambers respectively, is extinguished by main grid piece and the assistance grid piece that sets up in main explosion chamber and the assistance explosion chamber, has the effect of two-way arc extinguishing, promptly the utility model discloses utilize the three explosion chamber layout mode of magnetic blow and brand-new design to be equipped with the arc extinguishing bars piece and promote the arc extinguishing ability, can realize positive negative pole commutation, simultaneously under the condition that reduces the product volume, improved the breaking capacity of product, solved the disconnected ability of the two-way electric current of direct current contactor.
Drawings
FIG. 1 is a schematic view of the internal structure of the present invention;
FIG. 2 is a schematic view of the internal structure of the grid plate of the present invention;
FIG. 3 is a schematic view of the whole structure of the grid plate of the present invention;
fig. 4A is a schematic view of the arc extinguishing state of the present invention when a forward current is applied in a magnetic field direction;
fig. 4B is a schematic diagram of an arc extinguishing state when a reverse current is applied in a magnetic field direction according to the present invention;
fig. 5A is a schematic view of the arc extinguishing state of the present invention when a forward current is applied in another magnetic field direction;
fig. 5B is a schematic diagram of the arc extinguishing state of the present invention when reverse current is applied in another magnetic field direction.
The following description is made with reference to the accompanying drawings:
1-stationary contact group; 2-moving contact group;
101-stationary contact; 201-moving contact;
11-static running arc; 21-run arc track;
3-permanent magnet; 4-main arc-extinguishing chamber;
41-main grid sheet; 5-auxiliary arc-extinguishing chamber;
and 51-auxiliary grid sheet.
Detailed Description
The following description of the preferred embodiments of the present invention will be made in conjunction with the accompanying drawings.
Referring to fig. 1-3, for the preferred embodiment of a two-way nonpolarity direct current contactor arc extinguishing structure, including locating two stationary contact group 1 and one in direct current contactor's the arc extinguish chamber and moving contact group 2 to stationary contact group 1 position is last and moving contact group 2 position is down, and the lower extreme of two stationary contact group 1 forms stationary contact 101 respectively, and the last position that corresponds two stationary contact 101 of moving contact group forms a movable contact 201 respectively, and moving contact group can the up-and-down motion realize the break-make between two movable contacts and two stationary contacts.
The arc extinguish chamber is internally provided with parallel magnetic fields perpendicular to the planes of the two static contact groups 1 and the movable contact group 2, and in the embodiment, the permanent magnets 3 with the same magnetic field direction are arranged in the planes of the two static contact groups 1 and the movable contact group 2 to form the parallel magnetic fields.
The upper ends of the two static contact groups 1 are respectively arranged in the direction far away from the static contact groups and form a pair of static running arc tracks 11, namely, the upper ends of the two static contact groups 1 are respectively arranged in an upward left and upward right inclined mode to form a pair of static running arc tracks 11, and the included angle between the pair of static running arc tracks 11 is an acute angle or an obtuse angle. Meanwhile, the two ends of the movable contact group 2 are respectively arranged in the direction of going downwards and being away from each other, so that a pair of movable arc tracks 21 are formed. Namely, two ends of the moving contact group 2 extend leftwards and rightwards and downwards to form a pair of moving arc tracks 21, and an included angle between the pair of moving arc tracks is an acute angle or an obtuse angle. Preferably, the pair of static running arc tracks 11 are symmetrically arranged, and the pair of running arc tracks 21 are symmetrically arranged. The shape shown in the drawings is not limited in the present invention.
The arc extinguish chambers are divided into three parts by the arrangement of the pair of static arc runners 11 and the pair of moving arc runners 21, namely, a main arc extinguish chamber 4 is formed in the space between the two static arc runners 11, and two auxiliary arc extinguish chambers 5 are formed in the spaces between the static arc runners 11 on the two sides and the corresponding moving arc runners 21.
In order to increase the arc extinguishing effect, a plurality of main grid plates 41 are arranged in the main arc extinguishing chamber 4, and a plurality of auxiliary grid plates 51 are arranged in the auxiliary arc extinguishing chamber. Of course, the grid pieces are not required to be arranged in the three arc extinguishing chambers. Preferably, the plurality of main grid pieces 41 are arranged at intervals along the direction perpendicular to the connecting line of the pair of moving contacts, and the plurality of auxiliary grid pieces 51 are arranged at intervals along the direction perpendicular to the corresponding connecting line of the fixed contact and the moving contact.
The working principle of the arc extinguishing structure of the bidirectional nonpolar direct current contactor is as follows:
in the direction of the magnetic field of an arc extinguish chamber, namely the direction of the magnetic field of the permanent magnet 3 is perpendicular to the paper surface, when a positive current is applied to a static contact in the direction of the magnetic field, referring to fig. 4A, under the action of the arc magnetic field, the arc extinguish chamber 4 moves on the static arc runway 11 and enters the main arc extinguish chamber 4, and is extinguished by the main grid sheet 41 in the main arc extinguish chamber 4. When a reverse current is applied to the stationary contact, referring to fig. 4B, two arcs are formed, and enter the auxiliary arc-extinguishing chambers 5 on both sides respectively under the action of the magnetic field, and are extinguished by the auxiliary grid pieces 51 in the auxiliary arc-extinguishing chambers.
When the direction of the magnetic field of the arc extinguish chamber is changed, namely the direction of the magnetic field of the permanent magnet is perpendicular to the paper surface and outwards, the direction of the magnetic field is reversed with the permanent magnet 3, when positive current is applied to the static contact in the direction of the magnetic field, two sections of electric arcs are formed, and the electric arcs respectively enter the auxiliary arc extinguish chambers 5 at two sides under the action of the magnetic field and are extinguished by the auxiliary grid plates 51 in the auxiliary arc extinguish chambers 5, and the static contact is seen in fig. 5A. When reverse current is applied to the stationary contact, referring to fig. 5B, the arc magnetic field moves on the stationary runway 2 and enters the main arc extinguish chamber, and is extinguished by the main grid 41 in the main arc extinguish chamber.
It is thus clear that this two-way nonpolarity direct current contactor arc extinguishing structure divide into three explosion chamber with the explosion chamber through setting up permanent magnet and race arc way, and a main explosion chamber and two assistance explosion chambers promptly, no matter how transform of magnetic field in the explosion chamber, electric arc all enters main explosion chamber or two assistance explosion chambers respectively, and main grating piece and the assistance grating piece that sets up by main explosion chamber and assistance explosion chamber extinguish, have the effect of two-way arc extinguishing, promptly the utility model discloses utilize the three explosion chamber overall arrangement mode of magnetic blow and brand-new design to be equipped with the arc extinguishing grating piece and promote the arc extinguishing ability, can realize positive negative pole commutation, reducing under the condition of product volume simultaneously, improved the disjunction ability of product, solved the disconnected ability of the two-way electric current of direct current contactor.
In the previous description, numerous specific details were set forth in order to provide a thorough understanding of the invention. The foregoing description is only illustrative of the preferred embodiments of the invention, which can be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. All the contents that do not depart from the technical solution of the present invention, any simple modification, equivalent change and modification made to the above embodiments according to the technical substance of the present invention all still belong to the protection scope of the technical solution of the present invention.
Claims (7)
1. The utility model provides a two-way nonpolarity direct current contactor arc extinguishing structure, is including locating two stationary contact group (1) and one movable contact group (2) in direct current contactor's the arc extinguish chamber to the stationary contact group position is last and the movable contact group position is down, two the lower extreme of stationary contact group (1) forms stationary contact (101) respectively, the movable contact group is last to correspond two the position of stationary contact (101) forms a movable contact (201) respectively, movable contact group can the up-and-down motion realize two movable contact and two break-make between the stationary contact, its characterized in that: parallel magnetic fields perpendicular to planes of the two static contact groups (1) and the movable contact group (2) are arranged in the arc extinguish chamber, the upper ends of the two static contact groups (1) are respectively arranged in the direction away from the arc extinguish chamber to form a pair of static arc runners (11), and the two ends of the movable contact group (2) are respectively arranged in the direction away from the arc extinguish chamber downwards to form a pair of movable arc runners (21); the arc extinguishing chamber is internally provided with two main arc extinguishing chambers (4) formed by the space between the static arc runners (11), and two auxiliary arc extinguishing chambers (5) formed by the space between the static arc runners (11) and the corresponding moving arc runners (21) on two sides.
2. The arc extinguishing structure of the bidirectional nonpolar direct current contactor according to claim 1, characterized in that: permanent magnets (3) arranged in the same magnetic field direction are arranged on the front side and the rear side of the plane where the static contact group (1) and the dynamic contact group (2) are located.
3. The arc extinguishing structure of the bidirectional nonpolar direct current contactor according to claim 1, characterized in that: a plurality of main grid pieces (41) are arranged in the main arc extinguish chamber (4), and a plurality of auxiliary grid pieces (51) are arranged in the auxiliary arc extinguish chamber.
4. The arc extinguishing structure of the bidirectional nonpolar direct current contactor according to claim 3, characterized in that: the main grid pieces (41) are arranged at intervals along the direction vertical to the connecting line of the pair of the movable contacts.
5. The arc extinguishing structure of the bidirectional nonpolar direct current contactor according to claim 3, characterized in that: the auxiliary grid pieces (51) are arranged at intervals along the direction perpendicular to the connecting line of the corresponding fixed contact and the movable contact.
6. The arc extinguishing structure of the bidirectional nonpolar direct current contactor according to claim 1, characterized in that: the pair of static running arc tracks (11) are symmetrically arranged, and an included angle between the pair of static running arc tracks and the static running arc tracks is an acute angle or an obtuse angle.
7. The arc extinguishing structure of the bidirectional nonpolar direct current contactor according to claim 1, characterized in that: the running arc tracks (21) are symmetrically arranged, and an included angle between the running arc tracks and the running arc tracks is an acute angle or an obtuse angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021114685.XU CN212113573U (en) | 2020-06-16 | 2020-06-16 | Arc extinguishing structure of bidirectional nonpolar direct current contactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021114685.XU CN212113573U (en) | 2020-06-16 | 2020-06-16 | Arc extinguishing structure of bidirectional nonpolar direct current contactor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212113573U true CN212113573U (en) | 2020-12-08 |
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ID=73614564
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021114685.XU Active CN212113573U (en) | 2020-06-16 | 2020-06-16 | Arc extinguishing structure of bidirectional nonpolar direct current contactor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212113573U (en) |
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2020
- 2020-06-16 CN CN202021114685.XU patent/CN212113573U/en active Active
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