CN216353985U

CN216353985U - Direct current contactor

Info

Publication number: CN216353985U
Application number: CN202123101969.2U
Authority: CN
Inventors: 戴丁志; 闫玉锋; 周树意
Original assignee: Individual
Current assignee: Neptune Electric Kunshan Co ltd
Priority date: 2021-12-06
Filing date: 2021-12-06
Publication date: 2022-04-19
Anticipated expiration: 2031-12-06

Abstract

The utility model discloses a direct current contactor, comprising: the movable contact spring comprises a movable contact piece, a pressure spring and a spring pad clamped between the movable contact piece and the pressure spring, wherein the spring pad is partially contacted with the movable contact piece. The direct current contactor provided by the embodiment of the utility model adopts the spring pad made of metal materials, the spring pad is partially contacted with the movable contact spring by arranging the bulge on the surface of the spring pad close to the movable contact spring, so that the whole surface of the spring pad is prevented from being directly contacted with the movable contact spring, the heat generated by the movable contact spring at high temperature is reduced from being conducted to the spring pad, and a certain gap is formed between the movable contact spring and the spring pad due to the bulge of the spring pad, so that the direct current contactor is favorable for heat dissipation, and the pressure spring is prevented from being failed at high temperature to cause product failure.

Description

Direct current contactor

Technical Field

The utility model relates to the field of direct current contactors, in particular to a direct current contactor with heat transfer reduction and good heat dissipation function.

Background

In the moving contact piece assembly of the current direct current contactor, a spring pad made of a non-metal insulating material is generally adopted between a pressure spring and a moving contact piece, and the spring pad made of the material is in contact with the moving contact piece in the whole plane, so that the heat conduction area is large; moreover, the non-metallic material has a low temperature resistance level, and the spring pad tightly attached to the movable contact spring is carbonized and broken by high temperature generated in the working process of the product, so that the spring pad is damaged, and the pressure spring directly loses efficacy after being subjected to the high temperature on the movable contact spring, and finally the product loses efficacy.

Disclosure of Invention

In order to overcome the defects, the utility model provides a direct current contactor which can solve the problems that a spring pad made of the existing non-metal insulating material is low in temperature resistance level and difficult to dissipate heat, and a pressure spring is easy to lose efficacy due to high temperature damage, so that a product fails.

The technical scheme adopted by the utility model for solving the technical problem is as follows: an embodiment of the present invention provides a direct current contactor, including: the movable contact spring comprises a movable contact piece, a pressure spring and a spring pad clamped between the movable contact piece and the pressure spring, wherein the spring pad is partially contacted with the movable contact piece.

As a further improvement of the utility model, the spring pad is of an annular structure.

As a further improvement of the utility model, the surface of the spring pad close to the movable contact spring is provided with at least one bulge.

As a further improvement of the utility model, the number of the protrusions is three.

As a further improvement of the utility model, a gap is arranged between the spring pad and the movable contact spring.

As a further improvement of the present invention, the dc contactor further includes an adjusting pad, and the adjusting pad and the spring pad are respectively located on two sides of the moving contact.

As a further improvement of the utility model, the direct current contactor further comprises a push rod, and the spring pad is sleeved on the periphery of the push rod.

As a further improvement of the utility model, the spring pad is made of metal.

The utility model has the beneficial effects that: according to the direct current contactor provided by the embodiment of the utility model, the spring pad is partially contacted with the movable contact piece, so that the whole surface of the spring pad is prevented from being directly contacted with the movable contact piece, the heat generated by the movable contact piece at high temperature is reduced and conducted to the spring pad, and a certain gap is formed between the movable contact piece and the spring pad, so that the direct current contactor is favorable for heat dissipation, and is favorable for preventing the pressure spring from losing efficacy due to high temperature, and the product is not effective.

Drawings

Fig. 1 is a schematic structural diagram of a dc contactor according to an embodiment of the present invention;

FIG. 2 is a schematic structural view of the moving contact assembly;

fig. 3 is a schematic structural view of the spring pad.

The following description is made with reference to the accompanying drawings:

100-Duplex DC contactor; 110-moving contact piece assembly;

111-moving contact piece; 112-pressure spring;

113-spring pad; 114-a pushrod;

115-spacer adjustment; 116-riveting shims;

1131 — a bump.

Detailed Description

The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

As shown in fig. 1, an embodiment of the present invention provides a schematic structural diagram of a direct current contactor 100, and it should be noted that the embodiment describes the present invention in detail by taking a duplex direct contactor as an example, and it should be understood that the present invention is not limited thereto, and may also be other types of direct contactors.

Specifically, the duplex dc contactor 100 includes a movable contact 111, a pressure spring 112, and a spring pad 113 interposed between the movable contact 111 and the pressure spring 112, the spring pad 113 being partially in contact with the movable contact 111. Movable contact piece 111, pressure spring 112 and spring pad 113 form movable contact piece assembly 110. it will be appreciated that movable contact piece assembly 110 also includes other internal structures, such as a push rod 114 for actuating movable contact piece 111, an adjustment pad 115 on a side of movable contact piece 111 remote from spring pad 113, and a rivet pad 116 with a rivet function on a side of adjustment pad 115 remote from movable contact piece 111. Of course, the dc contactor 100 also includes other component structures, such as an electromagnetic component, which includes a movable iron core, a coil frame, a magnetic conduction frame, and a magnetic conduction fixing plate; the shell component comprises an upper cover shell and a base; the load member includes an upper contact piece, a lower contact piece, a curved contact bridge, a return spring, a movable contact assembly, it being understood that the movable contact assembly is within the load member.

After the electromagnetic component is connected with an external power supply, the internal coil generates magnetic force to enable the iron core to act, so that the movable contact piece assembly is pushed to act, the load assembly is connected with a load to work, and the load component is connected with current during working, so that high temperature is generated and directly conducted to each contact piece.

Fig. 2 is a schematic structural diagram of the moving contact assembly 110, fig. 3 is a schematic structural diagram of a spring pad, please refer to fig. 2 and fig. 3, in an embodiment of the present invention, the spring pad 113 is in a ring structure, preferably made of a metal material, a through hole in the middle of the ring structure of the spring pad 113 is sleeved on the periphery of the push rod 114, the spring pad 113 is located on one side of the moving contact 111 away from the adjusting pad 115, that is, the spring pad 113 and the adjusting pad 115 are respectively located on both sides of the moving contact 111. At least one protrusion 1131 is arranged on one side of the spring pad 113 close to the movable contact 111, the spring pad 113 is partially contacted with the movable contact 111 by arranging the protrusion 1131, so that the whole surface of the spring pad 113 is prevented from being directly contacted with the movable contact 111, the conduction of heat generated by the movable contact 111 at high temperature to the spring pad 113 is reduced, and because the spring pad 113 has the protrusion 1131, a certain gap exists between the movable contact 111 and the spring pad 113, the existence of the gap is favorable for heat dissipation, the heat generated by the movable contact 111 at high temperature is reduced by conducting the heat to the pressure spring 112 through the spring pad 113, and the pressure spring 112 is prevented from being subjected to high-temperature failure, so that the product failure is avoided.

Specifically, in the embodiment of the present invention, the number of the protrusions 1131 on the spring pad 113 is three, but of course, the number is not limited thereto, and other numbers of protrusions may be used.

In the previous description, numerous specific details were set forth in order to provide a thorough understanding of the present invention. The foregoing description is only a preferred embodiment of the utility model, which can be embodied in many different forms than described herein, and therefore the utility model is not limited to the specific embodiments disclosed above. And that those skilled in the art may, using the methods and techniques disclosed above, make numerous possible variations and modifications to the disclosed embodiments, or modify equivalents thereof, without departing from the scope of the claimed embodiments. Any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the present invention are within the scope of the technical solution of the present invention.

Claims

1. A direct current contactor comprising: the movable contact spring, compression spring to and the spring pad of clamp between movable contact spring and compression spring, its characterized in that: the spring pad is partially in contact with the movable contact.

2. The dc contactor as claimed in claim 1, wherein: the spring pad is of an annular structure.

3. The dc contactor as claimed in claim 2, wherein: the surface of the spring pad close to the movable contact spring is provided with at least one bulge.

4. The dc contactor as set forth in claim 3, wherein: the number of the bulges is three.

5. The dc contactor as claimed in claim 2, wherein: and a gap is formed between the spring pad and the movable contact spring.

6. The dc contactor as claimed in claim 2, wherein: the direct current contactor further comprises an adjusting gasket, and the adjusting gasket and the spring gasket are respectively located on two sides of the movable contact spring.

7. The dc contactor as claimed in claim 2, wherein: the direct current contactor further comprises a push rod, and the spring cushion is sleeved on the periphery of the push rod.

8. The dc contactor as claimed in claim 1, wherein: the spring pad is made of metal.