CN220963151U - Contactor - Google Patents

Abstract

Embodiments of the present disclosure provide a contactor including a base; and the mounting seat is arranged on the base, one side, far away from the base, of the mounting seat is provided with a wiring terminal, a heat conducting piece is arranged in the mounting seat, one end of the heat conducting piece is in contact with the wiring terminal, and the other end of the heat conducting piece is in contact with the base.

Description

Contactor

Technical Field

Embodiments of the present disclosure relate generally to the field of electrical equipment technology, and more particularly, to a contactor.

Background

The contactor is a device capable of rapidly switching off the ac and dc main circuits and frequently switching on and off the high current control circuit. In the case of a contactor, the terminals thereof generate a large amount of heat.

Conventional contactors generally increase the cross-sectional area of the terminal and the heat dissipation area by increasing the size of the terminal, thereby reducing the temperature of the terminal. However, such an arrangement increases the size of the contactor, thereby wasting space and increasing production costs.

Disclosure of utility model

It is an object of the present disclosure to provide a contactor to at least partially solve the above-mentioned problems.

In a first aspect of the present disclosure, a contactor is provided, the contactor comprising a base; the mounting seat is arranged on the base, one side, far away from the base, of the mounting seat is provided with a wiring terminal, a heat conducting piece is arranged in the mounting seat, one end of the heat conducting piece is contacted with the wiring terminal, and the other end of the heat conducting piece is contacted with the base _.

According to the embodiment of the disclosure, the heat conducting piece is arranged in the mounting seat, and two ends of the heat conducting piece are respectively contacted with the wiring terminal and the base. Therefore, heat on the wiring terminal can be transferred to the base through the heat conducting piece and dissipated outwards, so that the problem of high temperature of the wiring terminal is solved, meanwhile, the size of the contactor is not increased, and space is saved and cost is reduced.

In some embodiments, a mounting hole for mounting the heat conducting member is formed in the mounting seat, and the heat conducting member is attached to an inner wall surface of the mounting hole.

In some embodiments, the mounting hole includes a first portion adjacent the terminal, a second portion facing away from the terminal, and a third portion between and in communication with the first portion and the second portion, the thermally conductive member including a first thermally conductive portion disposed within the first portion and conforming to an inner wall surface of the first portion, a second thermally conductive portion disposed within the second portion and conforming to an inner wall surface of the second portion, and a third thermally conductive portion disposed within the third portion and conforming to an inner wall surface of the third portion.

In some embodiments, along the direction of extension of the thermally conductive member, the projection of the inner wall surface of the first portion is spaced apart from the projection of the inner wall surface of the third portion, and the projection of the inner wall surface of the second portion is spaced apart from the projection of the inner wall surface of the third portion.

In some embodiments, along the extension direction of the heat conductive member, the projection of the inner wall surface of the first portion is located outside the projection of the inner wall surface of the third portion, and the projection of the inner wall surface of the second portion is located inside the projection of the inner wall surface of the third portion.

In some embodiments, the first and second thermally conductive portions comprise a flexible thermally conductive layer that is extruded within the first and second portions.

In some embodiments, a first mounting groove is formed in one end, away from the connecting terminal, of the mounting seat, a through hole is formed in the bottom of the first mounting groove, a mounting bolt is arranged in the first mounting groove, and one end of the mounting bolt penetrates through the through hole and fixes the connecting terminal on the mounting seat.

In some embodiments, the mounting bolts are arranged in pairs, and the contactor further includes an insulating cover abutting the bottom of the first mounting groove and covering the pairs of mounting bolts.

In some embodiments, one end of the mounting base adjacent to the terminal is provided with a second mounting groove for mounting the terminal, and a distance between a groove bottom of the first mounting groove and a groove bottom of the second mounting groove is in a range of 11mm to 16 mm.

In some embodiments, the base includes a heat sink disposed adjacent to the terminal, the heat sink being coupled to the thermally conductive member.

It should be understood that what is described in this section is not intended to limit the key features or essential features of the embodiments of the present disclosure, nor is it intended to limit the scope of the present disclosure. Other features of the present disclosure will become apparent from the following description.

Drawings

The above and other features, advantages and aspects of embodiments of the present disclosure will become more apparent by reference to the following detailed description when taken in conjunction with the accompanying drawings. In the drawings, wherein like or similar reference numerals denote like or similar elements, in which:

Fig. 1 illustrates a schematic structural view of a contactor according to some embodiments of the present disclosure, with a portion of the housing removed;

FIG. 2 illustrates a schematic structural view of a mount according to some embodiments of the present disclosure;

fig. 3 shows a front cross-sectional view of the contactor shown in fig. 1;

FIG. 4 shows an enlarged schematic view of portion A of the contactor shown in FIG. 3;

Fig. 5 shows a cross-sectional view of the mount shown in fig. 2 taken along B-B.

Reference numerals illustrate:

100 is a contactor;

1 is a base, 11 is a heat dissipation piece;

2 is a mounting seat, 21 is a mounting hole, 211 is a first part, 212 is a second part, 213 is a third part, 22 is a first mounting groove, 23 is a through hole, 24 is a mounting bolt, and 25 is a second mounting groove;

3 is a wiring terminal;

4 is a heat conductive member, 41 is a first heat conductive portion, 42 is a second heat conductive portion, and 43 is a third heat conductive portion;

5 is an insulating cover;

and 6 is a shell.

Detailed Description

Preferred embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While the preferred embodiments of the present disclosure are illustrated in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

The term "comprising" and variations thereof as used herein means open ended, i.e., "including but not limited to. The term "or" means "and/or" unless specifically stated otherwise. The term "based on" means "based at least in part on". The terms "one example embodiment" and "one embodiment" mean "at least one example embodiment. The term "another embodiment" means "at least one additional embodiment". The terms "first," "second," and the like, may refer to different or the same object.

As described hereinabove, in the case of operation of the contactor, the terminals thereof generate a large amount of heat. Conventional contactors generally increase the cross-sectional area of the terminal and the heat dissipation area by increasing the size of the terminal, thereby reducing the temperature of the terminal. However, such an arrangement increases the size of the contactor, thereby wasting space and increasing production costs. Embodiments of the present disclosure provide a contactor 100 to at least partially solve the above-described problems. Hereinafter, the principles of the present disclosure will be described with reference to fig. 1 to 5.

Fig. 1 illustrates a schematic structural view of a contactor 100 according to some embodiments of the present disclosure, with a portion of the housing 6 removed. Fig. 2 illustrates a schematic structural view of a mount 2 according to some embodiments of the present disclosure. Fig. 3 shows a front cross-sectional view of the contactor 100 shown in fig. 1. Fig. 4 shows an enlarged schematic view of portion a of the contactor 100 shown in fig. 3. As shown in fig. 1 to 4, the contactor 100 described herein generally includes a base 1, a mount 2, a connection terminal 3, and a housing 6. The mount pad 2 sets up on base 1, and one side that keeps away from base 1 of mount pad 2 is provided with binding post 3, and one side that keeps away from base 1 of binding post 3 is provided with shell 6, and shell 6 is used for covering binding post 3's part.

With continued reference to fig. 3-4, in some embodiments, the thermally conductive member 4 is disposed within the mount 2, and more specifically, the mounting hole 21 is disposed within the mount 2, the mounting hole 21 being capable of being used to mount the thermally conductive member 4. One end of the heat conducting member 4 is in contact with the connection terminal 3, and the other end of the heat conducting member 4 is in contact with the base 1. With the above configuration, heat on the connection terminal 3 can be transferred to the base 1 through the heat conductive member 4 and dissipated outward, thereby solving the problem of high temperature of the connection terminal 3, and at the same time, the contactor 100 of the present disclosure does not need to increase the size of the connection terminal 3, thereby not increasing the size of the contactor 100, and saving space and reducing cost.

Obviously, to further increase the heat dissipation efficiency, the base 1 comprises a heat dissipation element 11 arranged adjacent to the terminal 3. The heat sink 11 can be in contact with the heat conductive member 4. Thereby, the heat on the connection terminal 3 can be transferred to the heat dissipation member 11 through the heat conduction member 4 and dissipated to the outside.

The heat sink 11 according to the embodiments of the present disclosure may be various types of heat sinks 11 currently known or available in the future, to which embodiments of the present disclosure are not limited. For example, in some embodiments, the heat sink 11 may be an aluminum plate. The aluminum plate is excellent in heat radiation performance, and the aluminum plate increases the heat radiation area, so that higher heat radiation efficiency is realized.

Referring back to fig. 2, in some embodiments, a second mounting groove 25 is provided at an end of the mounting base 2 adjacent to the terminal 3, and the terminal 3 is mounted in the second mounting groove 25. With continued reference to fig. 1 to 2, it is evident that each terminal 3 can be mounted in a pair of second mounting grooves 25, i.e. the number of second mounting grooves 25 should be twice the number of terminals 3. The second mounting groove 25 is provided at the groove bottom with a pair of mounting holes 21, and the pair of mounting holes 21 are spaced apart, wherein the heat conductive member 4 in one mounting hole 21 is connected with the incoming terminal, and the heat conductive member 4 in the other mounting hole 21 is connected with the outgoing terminal.

Fig. 5 shows a cross-sectional view of the mount 2 shown in fig. 2 taken along B-B. Referring to fig. 5, the mounting hole 21 includes a first portion 211, a second portion 212, and a third portion 213, wherein the third portion 213 communicates with the first portion 211 and the second portion 212, respectively. The first portion 211 is adjacent to the terminal 3, the second portion 212 faces away from the terminal 3, and the third portion 213 is located between the first portion 211 and the second portion 212. Referring back to fig. 4, the heat conductive member 4 includes a first heat conductive portion 41, a second heat conductive portion 42, and a third heat conductive portion 43, wherein the third heat conductive portion 43 is connected to the first heat conductive portion 41 and the second heat conductive portion 42, respectively. The first heat conductive portion 41 is disposed in the first portion 211, the second heat conductive portion 42 is disposed in the second portion 212, and the third heat conductive portion 43 is disposed in the third portion 213.

With continued reference to fig. 4, in some embodiments, the thermally conductive member 4 is in contact with the inner wall surface of the mounting hole 21, thereby improving the electrical insulation performance of the contactor 100. More specifically, the first heat conductive portion 41 is bonded to the inner wall surface of the first portion 211, the second heat conductive portion 42 is bonded to the inner wall surface of the second portion 212, and the third heat conductive portion 43 is bonded to the inner wall surface of the third portion 213.

The heat conductive member 4 according to the embodiment of the present disclosure may be various types of heat conductive members 4 currently known or available in the future, and the embodiment of the present disclosure is not limited thereto. For example, in some embodiments, the thermally conductive member 4 takes a composite structure in which the first thermally conductive portion 41 and the second thermally conductive portion 42 comprise flexible thermally conductive layers, and the first thermally conductive portion 41 and the second thermally conductive portion 42 are extruded within the first portion 211 and within the second portion 212. The first and second heat conductive parts 41 and 42 include, but are not limited to, a heat conductive silicon sheet, and the third heat conductive part 43 includes, but is not limited to, a ceramic.

By utilizing the configuration, on one hand, the two ends adopt heat conduction silica gel sheets, and the middle adopts the structural design of ceramic, so that higher heat conduction efficiency can be realized, and meanwhile, the cost can be reduced. On the other hand, under the pressing of the connection terminal 3 and the heat sink 11, the thermally conductive silicone sheet is pressed in the first portion 211 and the second portion 212, so that the thermally conductive silicone sheet is filled in the mounting hole 21. In the process that the heat-conducting silicon sheet is extruded, gaps in the mounting holes 21 can be filled, and bubbles in the mounting holes 21 can be discharged, so that higher heat-conducting efficiency and better insulating performance are realized. Finally, the heat-conducting silica gel piece and the ceramic layer are both made of insulating materials, so that the electric arc on the wiring terminal 3 can be prevented from climbing onto the heat dissipation piece 11 through the heat-conducting piece 4, and the electrical insulation performance of the contactor 100 is improved.

Along the extending direction of the heat conductive member 4, the projection of the inner wall surface of the first portion 211 is spaced apart from the projection of the inner wall surface of the third portion 213, and the projection of the inner wall surface of the second portion 212 is spaced apart from the projection of the inner wall surface of the third portion 213. With the above configuration, referring to fig. 4, if the arc on the terminal 3 needs to climb onto the heat dissipation member 11, the arc needs to pass through a bent creepage path, which is obviously advantageous for improving the electrical insulation performance of the contactor 100.

In some embodiments, along the extending direction of the heat conductive member 4, the projection of the inner wall surface of the first portion 211 is located outside the projection of the inner wall surface of the third portion 213, and the projection of the inner wall surface of the second portion 212 is located inside the projection of the inner wall surface of the third portion 213. With the above configuration, the heat conductive member 4 can be pushed up into the mounting hole 21 while the electrical insulation performance of the contactor 100 can be improved, thereby facilitating the mounting of the heat conductive member 4. In other embodiments, along the extending direction of the heat conductive member 4, the projection of the inner wall surface of the first portion 211 is located inside the projection of the inner wall surface of the third portion 213, and the projection of the inner wall surface of the second portion 212 is located outside the projection of the inner wall surface of the third portion 213. With the above configuration, the heat conductive member 4 can be pushed down into the mounting hole 21 while the electrical insulation performance of the contactor 100 can be improved, thereby facilitating the mounting of the heat conductive member 4.

Referring to fig. 2, 4 and 5, in some embodiments, the mounting base 2 is provided with a first mounting groove 22. The first mounting groove 22 is arranged at an end facing away from the connection terminal 3. Along the axial direction of the heat conductive member 4, the projection of the first mounting groove 22 is distributed outside the projection of the mounting hole 21. The tank bottom of the first mounting groove 22 is provided with a perforation 23, the perforation 23 communicates the first mounting groove 22 and the second mounting groove 25, a mounting bolt 24 is arranged in the first mounting groove 22, and one end of the mounting bolt 24 penetrates through the perforation 23 and fixes the wiring terminal 3 on the mounting seat 2. Obviously, in order to increase the mounting firmness of the connection terminals 3, the mounting bolts 24 can be arranged in pairs in one first mounting groove 22, the wire-incoming terminals are fastened by the pairs of mounting bolts 24, and the wire-outgoing terminals are also fastened by the pairs of mounting bolts 24.

With continued reference to fig. 4 and 5, on the one hand, since the mounting bolts 24 are disposed in the first mounting grooves 22, the inner wall surfaces of the first mounting grooves 22 increase the distance of the creepage path, thereby improving the electrical insulation performance of the contactor 100. On the other hand, the insulating cover 5 abuts against the groove bottom of the first mounting groove 22, and the insulating cover 5 covers the pair of mounting bolts 24. That is, the insulating cover 5 completely covers the pair of mounting bolts 24, thereby improving the electrical insulation performance of the contactor 100.

With continued reference to fig. 5, in some embodiments, the distance between the bottom of the first mounting groove 22 and the bottom of the second mounting groove 25 is in the range of 11mm to 16 mm. Thereby, the structural strength of the mount 2 can be ensured.

It should be noted that the numbers, values, etc. mentioned above and as may be referred to elsewhere in the disclosure are exemplary and are not intended to limit the scope of the disclosure in any way. Any other suitable numbers, values are possible.

In some embodiments, for the first heat conduction portion 41 and the second heat conduction portion 42 having a conductivity coefficient of 6W/m.k and the third heat conduction portion 43 having a conductivity coefficient of 31W/m.k, the heat dissipation effects of the two are compared by performing simulation analysis and temperature rise test experiments on the contactor 100 in the embodiment of the present disclosure and the conventional contactor without the heat conduction member, the terminal 3 of the contactor 100 in the embodiment of the present disclosure has a temperature reduction of 7-13k compared to the terminal of the conventional contactor, and the silver contact on the terminal 3 in the embodiment of the present disclosure has a temperature reduction of 15-25k compared to the silver contact of the conventional contactor. As can be seen, the contactor 100 according to the embodiment of the present disclosure can transfer heat on the connection terminal 3 to the base 1 through the heat conductive member 4 and radiate the heat outward, and can solve the problem that the temperature of the connection terminal 3 is high.

The heat conductive member 4 according to the embodiment of the present disclosure may be applied to various contactors 100 in order to solve the problem of the high temperature of the connection terminal 3. It should be understood that the heat conductive member 4 according to the embodiment of the present disclosure may also be applied to other electrical components, and the embodiment of the present disclosure is not limited thereto.

The foregoing description of the embodiments of the present disclosure has been presented for purposes of illustration and description, and is not intended to be exhaustive or limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the various embodiments described. The terminology used herein was chosen in order to best explain the principles of the embodiments, the practical application, or the technical improvement in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.

Claims (10)

1. A contactor (100), characterized in that the contactor (100) comprises:

a base (1); and

The mounting base (2) is arranged on the base (1), one side, far away from the base (1), of the mounting base (2) is provided with a wiring terminal (3), a heat conducting piece (4) is arranged in the mounting base (2), one end of the heat conducting piece (4) is in contact with the wiring terminal (3), and the other end of the heat conducting piece (4) is in contact with the base (1).

2. The contactor (100) according to claim 1, wherein a mounting hole (21) for mounting the heat conductive member (4) is provided in the mounting seat (2), and the heat conductive member (4) is bonded to an inner wall surface of the mounting hole (21).

3. The contactor (100) according to claim 2, wherein the mounting hole (21) comprises a first portion (211) adjacent to the terminal (3), a second portion (212) facing away from the terminal (3), and a third portion (213) located between the first portion (211) and the second portion (212) and communicating with the first portion (211) and the second portion (212), the heat conductive member (4) comprising a first heat conductive portion (41) disposed within the first portion (211) and abutting an inner wall surface of the first portion (211), a second heat conductive portion (42) disposed within the second portion (212) and abutting an inner wall surface of the second portion (212), and a third heat conductive portion (43) disposed within the third portion (213) and abutting an inner wall surface of the third portion (213).

4. A contactor (100) according to claim 3, characterized in that along the extension of the heat conducting member (4), the projection of the inner wall surface of the first portion (211) is spaced apart from the projection of the inner wall surface of the third portion (213), and the projection of the inner wall surface of the second portion (212) is spaced apart from the projection of the inner wall surface of the third portion (213).

5. The contactor (100) according to claim 4, wherein along the extension direction of the heat conducting member (4), the projection of the inner wall surface of the first portion (211) is located outside the projection of the inner wall surface of the third portion (213), and the projection of the inner wall surface of the second portion (212) is located inside the projection of the inner wall surface of the third portion (213).

6. The contactor (100) according to claim 4, wherein the first thermally conductive portion (41) and the second thermally conductive portion (42) comprise a flexible thermally conductive layer that is extruded within the first portion (211) and within the second portion (212).

7. The contactor (100) according to claim 1, wherein one end of the mounting base (2) facing away from the connection terminal (3) is provided with a first mounting groove (22), the groove bottom of the first mounting groove (22) is provided with a through hole (23), a mounting bolt (24) is provided in the first mounting groove (22), and one end of the mounting bolt (24) passes through the through hole (23) and fixes the connection terminal (3) on the mounting base (2).

8. The contactor (100) according to claim 7, wherein the mounting bolts (24) are provided in pairs, and the contactor (100) further comprises an insulating cover (5), the insulating cover (5) abutting against the bottom of the first mounting groove (22) and covering the pairs of mounting bolts (24).

9. The contactor (100) according to claim 7, characterized in that an end of the mounting base (2) adjacent to the terminal (3) is provided with a second mounting groove (25) for mounting the terminal (3), and that a distance between a groove bottom of the first mounting groove (22) and a groove bottom of the second mounting groove (25) is in a range of 11mm to 16 mm.

10. The contactor (100) according to claim 1, characterized in that the base (1) comprises a heat sink (11) arranged adjacent to the connection terminal (3), the heat sink (11) being connected with the heat conducting member (4).