CN213660309U

CN213660309U - Auxiliary trigger device of direct current contactor

Info

Publication number: CN213660309U
Application number: CN202022678951.8U
Authority: CN
Inventors: 张枫; 谢宪陪
Original assignee: Juen Electrical Shanghai Co ltd
Current assignee: Juen Electrical Shanghai Co ltd
Priority date: 2020-11-18
Filing date: 2020-11-18
Publication date: 2021-07-09
Anticipated expiration: 2030-11-18

Abstract

The utility model discloses a DC contactor's supplementary trigger device, including supplementary trigger plate, supplementary trigger plate fixed mounting is on moving the touch panel, supplementary trigger plate sets up in the proximity switch below, just supplementary trigger plate's tip is relative with proximity switch, proximity switch fixed mounting is on the arc-extinguish chamber roof, the outside fixed mounting of arc-extinguish chamber has three group's wiring board, three groups the tip of lead wire board runs through arc-extinguish chamber and fixed mounting at the top of arc-extinguish chamber. When the direct current contactor works, the auxiliary trigger board is arranged to be connected to the movable contact board, the loop of the proximity switch, the stationary contact and the movable contact is a series loop, and the stationary contact and the movable contact can be connected with electricity when the proximity switch is closed; when the movable contact is far away from the fixed contact under the driving of the movable iron core, the end part of the auxiliary contact plate is separated from the approach switch quickly, and even if the fixed contact and the movable contact generate electric arcs, the contact condition of the contactor cannot be influenced.

Description

Auxiliary trigger device of direct current contactor

Technical Field

The utility model relates to a contactor field, concretely relates to direct current contactor's supplementary trigger device.

Background

The DC contactor is a high-power switch electric appliance which passes through a low-current low-voltage remote control circuit and mainly comprises two parts: the structure of the electric contact system and the electromagnetic system mostly adopts a double-breakpoint bridge contact and a solenoid suction type magnetic system.

When the fixed contact and the movable contact are in contact with and are powered off, the control is carried out through the energization condition of the coil, and the condition that the work of the contactor is unstable due to incomplete arc extinction is easy to occur in the actual control process, so that a device for assisting in triggering the contactor needs to be designed.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a DC contactor's supplementary trigger device, the incomplete in-process of arc extinguishing that can effectively solve contactor among the background art, the unstable condition of contactor.

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes:

the utility model provides a supplementary trigger device of direct current contactor, includes supplementary trigger plate, supplementary trigger plate fixed mounting is on moving the touch panel, supplementary trigger plate sets up in the proximity switch below, just supplementary trigger plate's tip is relative with proximity switch, proximity switch fixed mounting is on the arc-extinguish chamber roof, fixed mounting has two sets of PCB boards on the proximity switch, and is two sets of PCB board all passes through wire and external control device electric connection, the outside fixed mounting of arc-extinguish chamber has three group's wiring board, three groups the tip of wiring board runs through arc-extinguish chamber and fixed mounting at the top of arc-extinguish chamber, the one end and the coil electric connection of wiring board, the other end of wiring board passes through wire and external control device electric connection, the outside of wiring board is provided with the water-stop sheet, water-stop sheet fixed mounting is on the arc-extinguish chamber outer wall.

Preferably, the auxiliary trigger plate is bent in an L shape.

Preferably, arc extinguishing chamber fixed mounting is in one side of base, the opposite side fixed mounting of base has the take-up stand, the winding is equipped with the coil on the take-up stand, the coil is around establishing the formation solenoid, coil and external power supply device electric connection.

Preferably, the inner cavity of the take-up stand is rotatably provided with a movable iron core, the movable iron core is fixedly connected with the end part of the connecting column, a spring cavity is formed in the movable iron core, the end part of the connecting column is fixedly connected to the movable touch plate, the connecting column is fixedly arranged on the end surface of the spring cavity, and the connecting column is sleeved with a spring.

Preferably, the middle part fixed mounting of arc-extinguishing chamber has first magnet steel, the both sides of first magnet steel are fixed mounting respectively has second magnet steel and third magnet steel, decide the contact and set up respectively between first magnet steel and second magnet steel, first magnet steel and third magnet steel.

Preferably, both ends of the movable contact plate are provided with movable contacts, the movable contacts are opposite to the end portions of the fixed contacts respectively, the fixed contacts penetrate through the clamping seat and are fixed on the clamping seat, the end portions of the fixed contacts are fixedly provided with waterproof plates, the waterproof plates are fixedly clamped on the clamping seat, the waterproof plates are provided with clamping grooves, and the end portions of the fixed contacts are clamped in the clamping grooves.

Preferably, the arc extinguishing cover is arranged in the outer protection cover, and the outer protection cover is clamped with the clamping seat.

The utility model provides a DC contactor's supplementary trigger device possesses following beneficial effect: when the direct current contactor works, the auxiliary trigger board is arranged to be connected to the movable contact board, the proximity switch, the fixed contact and the movable contact are in series connection, the fixed contact and the movable contact are connected with electricity when the proximity switch is closed, when the movable contact board moves towards the direction of the fixed contact, the end part of the auxiliary trigger board is attached to the proximity switch at the top of the arc extinguishing cover, and the contactor is electrified; when the movable contact is kept away from the stationary contact under the drive of moving the iron core, the tip of auxiliary contact board breaks away from with proximity switch very fast, and the contactor cuts off the power supply, even the stationary contact produces electric arc with the movable contact and can not produce the influence to the contact condition of contactor yet, and the coil passes through the wire and connects on the wiring board, wiring board and external control device electric connection, the last two sets of PCB boards that are provided with of proximity switch, then a contactor can control multiunit action part action.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below.

Fig. 1 is a schematic external structural view of the present invention;

fig. 2 is a schematic structural view of a static contact of the present invention;

fig. 3 is a schematic structural view of the PCB of the present invention;

FIG. 4 is a schematic cross-sectional view of the auxiliary trigger plate of FIG. 3;

fig. 5 is a schematic diagram of the structure of the auxiliary trigger plate of the present invention;

in the figure: 1. an auxiliary trigger plate; 2. a movable touch plate; 3. a proximity switch; 4. an arc extinguishing chamber; 5. a PCB board; 6. a wiring board; 7. a water-stop sheet; 8. a base; 9. a take-up stand; 10. a movable iron core; 11. Connecting columns; 12. a spring cavity; 13. a card holder; 14. an outer protective cover; 15. a waterproof sheet; 16. Fixing a contact; 17. moving contact.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the drawings of the present invention will be combined to clearly and completely describe the technical solutions in the embodiments of the present invention. In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first position" and "second position" are two different positions.

Embodiment one, as shown in fig. 1 to 5, an auxiliary trigger device of a dc contactor includes an auxiliary trigger plate 1, the auxiliary trigger plate 1 is fixedly installed on a movable contact plate 2, the auxiliary trigger plate 1 is disposed below a proximity switch 3, and supplementary trigger plate 1's tip is relative with proximity switch 3, proximity switch 3 fixed mounting is on 4 roof of arc-extinguish chamber, last fixed mounting of proximity switch 3 has two sets of PCB boards 5, two sets of PCB boards 5 are all through wire and external control device electric connection, arc-extinguish chamber 4's outside fixed mounting has three wiring boards 6 of group, the tip of three wiring boards of group runs through arc-extinguish chamber 4 and fixed mounting at arc-extinguish chamber 4's top, wiring board 6's one end and coil electric connection, wiring board 6's the other end passes through wire and external control device electric connection, wiring board 6's the outside is provided with water-stop sheet 7, water-stop sheet 7 fixed mounting is on 4 outer walls of arc-extinguish chamber. The auxiliary trigger plate 1 is bent in an L shape. The end part of the auxiliary trigger plate 1 and the proximity switch 3 have a large contact area, so that the auxiliary trigger plate 1 cannot be mistakenly operated when the movable touch plate 2 operates.

The working principle is as follows: when the direct current contactor works, the auxiliary trigger plate 1 is arranged to be clamped on the movable contact plate 2, the proximity switch 3, the fixed contact and the movable contact are in series connection, the fixed contact and the movable contact are connected with electricity when the proximity switch 3 is closed, when the movable contact plate 2 moves towards the direction of the fixed contact, the end part of the auxiliary trigger plate 1 is attached to the proximity switch 3 at the top of the arc extinguishing cover 4, and the contactor is electrified; when the movable contact is far away from the fixed contact under the driving of the movable iron core 10, the end part of the auxiliary contact plate is quickly separated from the approach switch 3, the contactor is powered off, and even if the fixed contact and the movable contact generate electric arcs, the contact condition of the contactor cannot be influenced.

The coil passes through the wire and connects on wiring board 6, wiring board 6 and external control device electric connection, and the operating conditions of contactor is further controlled to the circular telegram condition of external control device control coil, and two sets of PCB boards 5 that set up on proximity switch 3 send control signal to external control device when proximity switch 3 circular telegram or outage, control the action of other parts, then a contactor can control multiunit action part action.

In a second embodiment, as a preferred technical solution of the first embodiment, the arc extinguishing chamber 4 is fixedly installed at one side of the base 8, the take-up stand 9 is fixedly installed at the other side of the base 8, a coil is wound on the take-up stand 9, the coil is wound to form a coil, and the coil is electrically connected with the external power supply device. External power source device supplies power to the coil through the wiring board, and the inner chamber of take-up stand 9 rotates installs and moves iron core 10, moves and has seted up spring chamber 12 in the iron core 10, and the tip fixed connection of spliced pole 11 is on moving touch panel 2, and spliced pole 11 slidable mounting is in spring chamber 12, and the cover is equipped with the spring on the spliced pole 11, and the one end fixed mounting of spring is in spring chamber 12, and the other end of spring clamps on spliced pole 11.

After the movable iron core 10 is electrified, the connecting column 11 is driven to move upwards by resisting the acting force of the spring in the take-up frame 9, the movable contact iron at the end part of the connecting column 11 can be driven to move upwards, and then the movable contact at the end part of the movable contact iron is in contact with the fixed contact on the arc extinguishing cover 4, and the auxiliary trigger plate 1 in the middle of the movable contact iron is in contact with the proximity switch 3.

In a third embodiment, as a preferred technical solution of the first embodiment, a first magnetic steel is fixedly installed in the middle of the arc-extinguishing chamber 4, a second magnetic steel and a third magnetic steel are respectively fixedly installed on two sides of the first magnetic steel, and the fixed contact 16 is respectively disposed between the first magnetic steel and the second magnetic steel, and between the first magnetic steel and the third magnetic steel. The first magnetic steel, the second magnetic steel and the third magnetic steel are respectively arranged between the moving contacts 17 and on two sides of the moving contacts 17, so that an effective magnetic field between the static contact and the moving contacts 17 can be increased, arc can be rapidly extinguished, and heat and firing effects generated by electric arcs are reduced.

The two ends of the movable contact plate 2 are provided with movable contacts which are opposite to the end parts of the fixed contacts 16 respectively, the fixed contacts 16 penetrate through the clamping seat 13 and are fixed on the clamping seat 13, the end parts of the fixed contacts 16 are fixedly provided with waterproof plates 15, the waterproof plates 15 are fixedly clamped on the clamping seat 13, the waterproof plates 15 are provided with clamping grooves, and the end parts of the fixed contacts 16 are clamped in the clamping grooves. The arc extinguishing cover 4 is arranged in the outer protection cover 14, and the outer protection cover 14 is clamped with the clamping seat 13.

By providing the waterproof plate 15 at the end of the fixed contact 16, the end of the fixed contact 16 can be protected from water and also the end of the fixed contact 16 can be fixed. The arc extinguishing cover 4 is arranged in the outer protection cover 14, and the outer protection cover 14 is clamped with the clamping seat 13. The outer protective cover 14 is provided with a mounting hole, the contactor is fixedly mounted at a required position by penetrating through the mounting hole through a bolt, and the whole contactor is protected and fixed by the outer protective cover 14.

The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; the pattern filling in the drawings of the utility model does not represent the material of the structure, and only distinguishes the structure; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1. An auxiliary trigger device of a direct current contactor is characterized in that: including supplementary trigger plate, supplementary trigger plate fixed mounting is on moving the touch panel, supplementary trigger plate sets up in the proximity switch below, just supplementary trigger plate's tip is relative with proximity switch, proximity switch fixed mounting is on the arc-extinguish chamber roof, fixed mounting has two sets of PCB boards on the proximity switch, and is two sets of PCB board all passes through wire and external control device electric connection, the outside fixed mounting of arc-extinguish chamber has three wiring boards of group, three groups the tip of wiring board runs through arc-extinguish chamber and fixed mounting at the top of arc-extinguish chamber, the one end and the coil electric connection of wiring board, the other end of wiring board passes through wire and external control device electric connection, the outside of wiring board is provided with the water-stop sheet, water-stop sheet fixed mounting is on the arc-extinguish chamber outer wall.

2. An auxiliary trigger device of a dc contactor according to claim 1, wherein: the auxiliary trigger plate is bent in an L shape.

3. An auxiliary trigger device of a dc contactor according to claim 1, wherein: the arc extinguishing cover is fixedly arranged on one side of the base, a wire collecting frame is fixedly arranged on the other side of the base, a coil is wound on the wire collecting frame, and the coil is electrically connected with an external power supply device.

4. An auxiliary trigger device of a dc contactor according to claim 3, wherein: the inner cavity of the take-up stand is rotatably provided with a movable iron core, a spring cavity is formed in the movable iron core, the movable touch plate is fixedly connected with the end part of the connecting column, the connecting column is slidably arranged in the spring cavity, a spring is sleeved on the connecting column, one end of the spring is fixedly arranged in the spring cavity, and the other end of the spring is clamped on the connecting column.

5. An auxiliary trigger device of a dc contactor according to claim 1, wherein: the middle part fixed mounting of arc-extinguishing chamber has first magnet steel, the both sides of first magnet steel are fixed mounting respectively has second magnet steel and third magnet steel, be provided with the fixed contact between first magnet steel and second magnet steel, first magnet steel and the third magnet steel respectively.

6. An auxiliary trigger device of a dc contactor according to claim 1, wherein: the movable contact is arranged at two ends of the movable contact plate, the movable contact is opposite to the end portion of the fixed contact respectively, the fixed contact penetrates through the clamping seat and is fixed on the clamping seat, a waterproof plate is fixedly arranged at the end portion of the fixed contact, the waterproof plate is fixedly clamped on the clamping seat, a clamping groove is formed in the waterproof plate, and the end portion of the fixed contact is clamped in the clamping groove.

7. An auxiliary trigger device of a dc contactor according to claim 1, wherein: the arc extinguishing cover is arranged in the outer protection cover, and the outer protection cover is clamped with the clamping seat.