CN221226119U - Arc extinguishing structure of contactor - Google Patents

Abstract

The utility model discloses an arc extinguishing structure of a contactor, which comprises an electrifying base, wherein an insulating shell is arranged on the top surface of the electrifying base, arc extinguishing covers are arranged on two sides of the insulating shell, a movable contact is arranged above the insulating shell, a fixed groove block is arranged above the movable contact, a pressing button is arranged inside the fixed groove block, a movable flip is arranged on the top surface of the fixed groove block, and two connector lugs are arranged on the electrifying base, the insulating shell and one side of the fixed groove block. This contactor arc extinguishing structure through circular telegram base and insulating housing, movable contact, fixed slot piece, the connector lug that set up, the contactor realizes free alternating current changes when can, through circular telegram base and insulating housing, the arc-extinguishing chamber that set up, can make the contact of contactor and the produced electric arc diffusion's of contact direction setting in fixed one side to carry out the scattered arc extinction of short electric arc, mutually support and use, can effectually solve the unable problem of arc extinction of wherein one end when using alternating current.

Description

Arc extinguishing structure of contactor

Technical Field

The utility model relates to the technical field of vacuum contactors, in particular to a contactor arc extinguishing structure.

Background

Contactors are classified into alternating current contactors (voltage AC) and direct current contactors (voltage DC), and are applied to electric power, distribution and power utilization. In the broad sense, a contactor refers to an electric appliance which uses current to flow through a coil to generate a magnetic field so as to close a contact to control a load in industrial electricity, and in the electric appliance with a contact, the process of switching on and off the current by the contact is often accompanied with the generation and extinction of an electric arc. Arcing is a gas discharge phenomenon that presents a hazard to electrical appliances.

The contactor arc extinguishing device in the current market is generally only aimed at a direct current single-phase contactor, and can only extinguish arc at a contact point and one end of a contact, when alternating current is needed, one side of the contactor is in arc extinguishing with the contact, and the other side of the contactor is in arc extinguishing, meanwhile, a common contactor button is not in false touch protection, and tripping problems caused by the false touch device can also exist.

Disclosure of utility model

The present utility model is directed to an arc extinguishing structure of a contactor, so as to solve the problems set forth in the background art.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a contactor arc extinguishing structure, includes the circular telegram base, the top surface of circular telegram base is provided with insulating housing, insulating housing's bottom surface and circular telegram base's top surface fixed connection, insulating housing's both sides are provided with the arc-extinguishing chamber, insulating housing's top is provided with movable contact, movable contact's top is provided with the fixed slot piece, the inside of fixed slot piece is provided with presses the button, the top surface of fixed slot piece is provided with movable flip, circular telegram base and insulating housing, one side of fixed slot piece all are provided with two connector lugs.

Preferably, a magnetic field coil block is arranged in the electrified base, two data wires are arranged on two sides of the magnetic field coil block, and one end of each data wire is fixedly connected with the corresponding connector lug.

Preferably, the top surface of circular telegram base is provided with two track poles, the bottom of track pole and circular telegram base's top surface fixed connection.

Preferably, two penetrating holes are formed in the movable contact, an iron block is arranged on the top surface of the movable contact, and the top surface of the iron block is fixedly connected with the top surface of the movable contact.

Preferably, the bottom surface of the movable contact is provided with a return spring, and one end of the return spring is fixedly connected with the inner circular wall of the hole on the top surface of the insulating shell.

Preferably, five arc extinguishing bars are arranged on one side of the arc extinguishing chamber, and four screw nails are arranged on one side of the arc extinguishing chamber.

Compared with the prior art, the utility model has the beneficial effects that:

This contactor arc extinguishing structure through circular telegram base and insulating housing, movable contact, fixed slot piece, the connector lug that set up, can make the contactor realize free alternating current conversion, through circular telegram base and insulating housing, the arc-extinguishing chamber of setting, can make the contact of contactor and the produced electric arc diffusion's of contact direction setting in fixed one side to carry out the scattered arc extinction of short electric arc, use of mutually supporting, can effectually solve wherein the unable problem of arc extinction of one end when using alternating current.

This contactor arc extinguishing structure through fixed slot piece and the button of pressing, the activity flip that set up, can seal the button top of pressing after the use, prevents to press the button and change the position because of external force factor, has effectively avoided simultaneously leading to the device to take place the tripping operation problem because of the mistake touches.

Drawings

FIG. 1 is an exploded perspective view of the present utility model;

FIG. 2 is an exploded view of the powered base of the present utility model;

FIG. 3 is an exploded perspective view of the movable contact of the present utility model;

Fig. 4 is an exploded view of the arc chute of the present utility model.

In the figure: 1. electrifying a base; 2. an insulating housing; 3. an arc extinguishing cover; 4. a movable contact; 5. fixing the groove block; 6. pressing the button; 7. a movable flip; 8. a connector lug; 9. a magnetic field coil block; 10. a data line; 11. a track rod; 12. penetrating the jack; 13. iron blocks; 14. a return spring; 15. arc extinguishing grid plates; 16. and (5) screw nails.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

As shown in fig. 1-4, the present utility model provides a technical solution: the contactor arc extinguishing structure comprises an electrifying base 1, wherein the electrifying base 1 is used for supporting the whole device, meanwhile, electrifying can be carried out in the base, an insulating shell 2 is arranged on the top surface of the electrifying base 1, the insulating shell 2 is used for disconnecting contacts on two sides, an internal circuit is not formed when a movable contact 4 is not contacted with the contacts, the bottom surface of the insulating shell 2 is fixedly connected with the top surface of the electrifying base 1, the insulating shell 2 and the electrifying base 1 are integrated, the insulating shell 2 is not influenced by external force to fall off to cause the contacts on two sides to collide to form a new circuit, arc extinguishing covers 3 are arranged on two sides of the insulating shell 2, the arc extinguishing covers 3 are used for preventing electric arcs formed when the contacts and the contacts touch and break, arc extinguishing can be carried out on one side of the arc extinguishing covers, a movable contact 4 is arranged above the insulating shell 2, the movable contact 4 is used for contacting with contacts on the upper end and the lower end, ensuring that the movable contact 4 can form a complete circuit when contacting with a pair of contacts, a fixed slot block 5 is arranged above the movable contact 4, the fixed slot block 5 is used for fixing the position of an upper end contact, meanwhile, ensuring that a pressing button 6 moves along a track, the pressing button 6 is arranged inside the fixed slot block 5, the pressing button 6 is used for driving the movable contact 4 to move, ensuring that a worker can manually control the movable contact 4, the top surface of the fixed slot block 5 is provided with a movable flip 7, the movable flip 7 is used for closing the top surface of the pressing button 6, ensuring that the pressing button 6 is not influenced by external force to change an internal circuit when not being used, two connector lugs 8 are arranged on one sides of an electrifying base 1, an insulating shell 2 and the fixed slot block 5, the connector lugs 8 are used for connecting a power supply, ensuring that the circuit inside the device is normally formed, and ensure that internal circuit can freely change, the inside of circular telegram base 1 is provided with magnetic field coil piece 9, magnetic field coil piece 9 is used for cooperating iron plate 13 to use, ensure that circular telegram base 1 circular telegram back magnetic field coil piece 9 can form a magnetic field and adsorb iron plate 13, make iron plate 13 drive moving contact 4 and remove the circuit that changes inside, the both sides of magnetic field coil piece 9 are provided with two data lines 10, data line 10 is used for transmitting the electric energy, ensure that magnetic field coil piece 9 can form a magnetic field under the condition of circular telegram, the one end and the connector lug 8 fixed connection of data line 10 ensure that data line 10 and connector lug 8 are as an organic whole, ensure that the electric energy can be directly through magnetic field coil piece 9 when connector lug 8 is connected with the power, the top surface of circular telegram base 1 is provided with two track poles 11, track pole 11 is used for supporting fixed slot piece 5, ensure moving contact 4 along given track simultaneously, the bottom of track pole 11 is fixedly connected with the top surface of circular telegram base 1, ensure that track pole 11 and circular telegram base 1 are integrative, ensure moving contact 4 along given track.

Two penetrating holes 12 are formed in the movable contact 4, the penetrating holes 12 are used for penetrating the track rod 11 to ensure that the movable contact 4 moves along a given track, an iron block 13 is arranged on the top surface of the movable contact 4, the iron block 13 is used for being matched with the magnetic field coil block 9 to be used, the iron block 13 can drive the movable contact 4 to move and contact with the contacts to form a complete circuit, the top surface of the iron block 13 is fixedly connected with the top surface of the movable contact 4 to ensure that the iron block 13 is integrated with the movable contact 4, the movable contact 4 can be driven to move when the iron block 13 moves, a return spring 14 is arranged on the bottom surface of the movable contact 4 to spring the movable contact 4, the movable contact can contact with the contacts above when the magnetic field coil block 9 and the iron block 13 are not adsorbed to form a complete circuit, one end of the return spring 14 is fixedly connected with the inner circular wall of the hole on the top surface of the insulating shell 2, the return spring 14 and the insulating shell 2 are integrally ensured, the return spring 14 cannot bounce the movable contact 4 due to repeated operation, five arc extinguishing grid plates 15 are arranged on one side of the arc extinguishing cover 3, the arc extinguishing grid plates 15 are used for adsorbing an arc formed by connecting and disconnecting the contact, the arc can be ensured to reach an arc extinguishing effect through short arc diffusion, four screw nails 16 are arranged on one side of the arc extinguishing cover 3, the screw nails 16 are used for connecting the arc extinguishing cover 3 with the electrified base 1 and the insulating shell 2, and the arc can be ensured to be diffused and prolonged only towards one fixed direction after the arc is formed.

Working principle: when the connector lug 8 is connected with the power supply, current passes through a data line 10 and a magnetic field coil block 9, the magnetic field coil block 9 forms a magnetic field, a magnetic field adsorbs the iron block 13 to enable the iron block 13 to move, the iron block 13 moves to drive a movable contact 4 to move, the movable contact 4 is contacted with a lower contact to form a complete current, meanwhile, an arc is formed when the upper contact is disconnected with the movable contact 4, the arc is diffused, prolonged and transferred to an arc-extinguishing grid sheet 15 in the direction of the arc-extinguishing cover 3, a plurality of arc-extinguishing grid sheets 15 are directly free, so that the arc forms a plurality of short arcs to diffuse and finally disappear, when the connector lug 8 is disconnected with the power supply, the magnetic field coil block 9 does not form a magnetic field any more, the iron block 13 and the magnetic field coil block 9 are not closely adsorbed, a return spring 14 bounces the movable contact 4 to move, the movable contact 4 is contacted with the upper contact to form a complete circuit, and the arc is similarly diffused in the direction of the arc-extinguishing cover 3 when the movable contact 4 is disconnected with the lower contact.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1. Contactor arc extinguishing structure, including circular telegram base (1), its characterized in that: the top surface of circular telegram base (1) is provided with insulating housing (2), the bottom surface of insulating housing (2) and the top surface fixed connection of circular telegram base (1), the both sides of insulating housing (2) are provided with arc extinguishing cover (3), the top of insulating housing (2) is provided with moving contact (4), the top of moving contact (4) is provided with fixed slot piece (5), the inside of fixed slot piece (5) is provided with presses button (6), the top surface of fixed slot piece (5) is provided with movable flip (7), one side of circular telegram base (1) and insulating housing (2), fixed slot piece (5) all is provided with two connector lug (8).

2. The contactor arc extinguishing structure according to claim 1, wherein: the power-on base (1) is internally provided with a magnetic field coil block (9), two sides of the magnetic field coil block (9) are provided with two data wires (10), and one end of each data wire (10) is fixedly connected with a connector lug (8).

3. The contactor arc extinguishing structure according to claim 1, wherein: the top surface of circular telegram base (1) is provided with two track poles (11), the bottom of track pole (11) is connected with the top surface fixed of circular telegram base (1).

4. The contactor arc extinguishing structure according to claim 1, wherein: two penetrating holes (12) are formed in the movable contact (4), an iron block (13) is arranged on the top surface of the movable contact (4), and the top surface of the iron block (13) is fixedly connected with the top surface of the movable contact (4).

5. The contactor arc extinguishing structure according to claim 1, wherein: the bottom surface of the movable contact (4) is provided with a return spring (14), and one end of the return spring (14) is fixedly connected with the inner circular wall of the hole on the top surface of the insulating shell (2).

6. The contactor arc extinguishing structure according to claim 1, wherein: five arc extinguishing bars (15) are arranged on one side of the arc extinguishing chamber (3), and four screw nails (16) are arranged on one side of the arc extinguishing chamber (3).