Contact structure of direct current contactor

Abstract

The utility model provides a contact structure of a direct current contactor, which comprises a static contact piece and a moving contact piece, two ends of one side of the static contact piece are respectively provided with a bending connecting part, the bending end of each bending connecting part is integrally provided with an installation flange, the middle part of each installation flange is integrally provided with a moving contact crimping plate, and the moving contact crimping plate is provided with a movable contact. One end of each moving contact crimping plate is provided with a moving contact crimping surface, one end of each moving contact crimping surface is integrally provided with an opening part extending outwards, the opening parts are used for leading in the moving contact piece, and the middle part of the other side of the static contact piece is provided with a moving contact insertion port. And the moving contact piece is connected with the two moving contact crimping surfaces through the moving contact insertion opening and the opening part. According to the utility model, the moving contact piece inserted into the moving contact crimping surface is pressed by the two contact crimping surfaces, so that the connection strength between the moving contact piece and the static contact piece is enhanced, and the phenomenon of accidental bounce-off in the use process is avoided.

Description

Technical Field

[0001] This utility model belongs to the field of DC contactor technology and relates to the contact structure of DC contactors. Background Technology

[0002] A DC contactor is a mechanical device that uses electromagnetic principles to close and release the moving and stationary iron cores, thereby connecting and disconnecting the moving and stationary contacts.

[0003] Most existing DC contactor contact structures are direct-acting, such as the moving contact mounting structure disclosed in Chinese Patent CN219738860U. The contacts are divided into moving and stationary contacts. However, in existing technologies, electromagnetic principles are used to connect the moving and stationary contacts, but the strength of this contact cannot be guaranteed. In other words, the contact force between the moving and stationary contacts is insufficient, leading to accidental separation during use. Therefore, we have designed a contact structure for a DC contactor. Summary of the Invention

[0004] The purpose of this invention is to provide a contact structure for a DC contactor to solve the problems mentioned in the background art.

[0005] The objective of this utility model can be achieved through the following technical solution: A contact structure for a DC contactor includes a stationary contact and a moving contact. Both ends of one side of the stationary contact are fitted with bent connecting portions. The bent ends of both bent connecting portions are integrally formed with mounting flanges. Moving contact pressing plates are integrally formed at the middle of the two mounting flanges. One end of each of the two moving contact pressing plates is provided with a moving contact pressing surface. One end of each of the two moving contact pressing surfaces is integrally formed with an outwardly extending opening for guiding the moving contact. A moving contact insertion port is opened at the middle of the other side of the stationary contact. The moving contact is connected to the two moving contact pressing surfaces through the moving contact insertion port and the opening.

[0006] In the contact structure of the DC contactor described above, a moving contact mounting base is installed at one end of the moving contact member, and two terminals are installed at one end of the moving contact mounting base.

[0007] In the contact structure of the DC contactor described above, an insulating sleeve is fitted on the body of each of the two terminals, and a clamp is installed on the outside of each of the two insulating sleeves.

[0008] In the contact structure of the DC contactor described above, the moving contact is composed of a silver layer one, a copper substrate, and a silver layer two, with the silver layer one and silver layer two respectively disposed on the upper and lower surfaces of the copper substrate.

[0009] In the contact structure of the DC contactor described above, the bottom surface of the second silver layer is hemispherical.

[0010] In the contact structure of the DC contactor described above, a weight-reducing cavity is provided at the top and bottom of the stationary contact. The edges on both sides of the weight-reducing cavity coincide with the edges of the bent connection portion, so that the moving contact pressing plate is located in the weight-reducing cavity.

[0011] Compared with the prior art, the advantages of the contact structure of the DC contactor of this utility model are as follows: by integrally forming a moving contact pressing plate at the middle of the two mounting flanges, a moving contact pressing surface is provided at one end of the two moving contact pressing plates, and an outwardly extending opening is integrally formed at one end of the two moving contact pressing surfaces. This opening is used for the introduction of the moving contact component. The moving contact component is connected to the two moving contact pressing surfaces through the moving contact insertion port and the opening. The moving contact component inserted into the moving contact pressing surface is subjected to the pressure of the two contact pressing surfaces, which strengthens the connection between the moving contact component and the stationary contact component and avoids the phenomenon of accidental pop-out during use. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the stationary contact and the moving contact of the DC contactor of this utility model.

[0013] Figure 2 This is a three-dimensional structural diagram of the stationary contact component of the DC contactor of this utility model.

[0014] Figure 3 This is a three-dimensional structural diagram of the moving contact component of the DC contactor of this utility model.

[0015] In the figure, 1 is the stationary contact; 2 is the bent connection; 3 is the mounting flange; 4 is the moving contact crimping plate; 5 is the moving contact crimping surface; 6 is the opening; 7 is the moving contact insertion port; 8 is the moving contact mounting base; 9 is the moving contact; 10 is the terminal block; 11 is the insulating sleeve; and 12 is the clamp. Detailed Implementation

[0016] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0017] like Figure 1 , Figure 2 and Figure 3 As shown, this utility model relates to the contact structure of a DC contactor.

[0018] Example 1: Includes a stationary contact 1 and a moving contact 9. Both ends of one side of the stationary contact 1 are equipped with bent connecting parts 2. The bent ends of the two bent connecting parts 2 are integrally formed with mounting flanges 3. The middle of the two mounting flanges 3 is integrally formed with moving contact pressing plates 4. One end of the two moving contact pressing plates 4 is provided with a moving contact pressing surface 5. One end of the two moving contact pressing surfaces 5 is integrally formed with an outwardly extending opening 6. The opening 6 is used for the introduction of the moving contact 9. The middle of the other side of the stationary contact 1 is provided with a moving contact insertion port 7. The moving contact 9 is connected to the two moving contact pressing surfaces 5 through the moving contact insertion port 7 and the opening 6.

[0019] like Figure 1 and Figure 2 As shown, in order to reduce the weight of the stationary contact 1 and save materials, a weight-reducing cavity is provided at the top and bottom of the stationary contact 1. The edges of the weight-reducing cavity on both sides coincide with the edges of the bent connection part 2 so that the moving contact pressing plate 4 is located in the weight-reducing cavity.

[0020] Based on Embodiment 1, in order to facilitate the installation of the moving contact 9 and the connection of the power supply wiring, a moving contact mounting base 8 is installed at one end of the moving contact 9, and two terminals 10 are installed at one end of the moving contact mounting base 8.

[0021] Furthermore, such as Figure 3 As shown, in order to better limit the terminal blocks 10, insulating sleeves 11 are installed on the body of both terminal blocks 10, and clamps 12 are installed on the outside of both insulating sleeves 11.

[0022] Example 2: Includes a stationary contact 1 and a moving contact 9. The moving contact 9 is composed of a silver layer 1, a copper substrate, and a silver layer 2. The silver layer 1 and the silver layer 2 are respectively disposed on the upper and lower surfaces of the copper substrate; the bottom structure surface of the silver layer 2 is hemispherical.

[0023] The moving contact 9 is configured as a three-layer composite structure consisting of silver layer one, copper substrate and silver layer two, which fully considers the shape of the riveting fixture during later use and processing, so as to achieve uniform deformation under stress during later use and processing.

[0024] Contents not described in detail herein are existing technologies known to those skilled in the art. The specific embodiments described herein are merely illustrative examples illustrating the spirit of this invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this invention or exceeding the scope defined by the appended claims.

Claims

1. Contact structure of a DC contactor comprising a stationary contact piece (1) and a movable contact piece (9), characterized in that Both ends of one side of the stationary contact (1) are equipped with bent connecting parts (2). The bent ends of the two bent connecting parts (2) are integrally formed with mounting flanges (3). The middle of the two mounting flanges (3) is integrally formed with moving contact pressing plates (4). One end of the two moving contact pressing plates (4) is provided with a moving contact pressing surface (5). One end of the two moving contact pressing surfaces (5) is integrally formed with an outwardly extending opening (6). The opening (6) is used for the introduction of the moving contact (9). The middle of the other side of the stationary contact (1) is provided with a moving contact insertion port (7). The moving contact (9) is connected to the two moving contact pressing surfaces (5) through the moving contact insertion port (7) and the opening (6).

2. The contact structure of a DC contactor according to claim 1, characterized in that, One end of the moving contact (9) is equipped with a moving contact mounting base (8), and two terminals (10) are installed at one end of the moving contact mounting base (8).

3. The contact structure of a DC contactor according to claim 2, characterized in that, Insulating sleeves (11) are fitted on the body of both terminals (10), and clamps (12) are installed on the outside of both insulating sleeves (11).

4. The contact structure of a DC contactor according to claim 1, characterized by The moving contact (9) is composed of a silver layer one, a copper substrate and a silver layer two, with the silver layer one and the silver layer two respectively disposed on the upper and lower surfaces of the copper substrate.

5. The contact structure of a DC contactor according to claim 4, characterized in that, The bottom structure surface of the second silver layer is hemispherical.

6. The contact structure of a DC contactor according to claim 1, characterized by The stationary contact (1) has weight-reducing cavities at its top and bottom. The edges of the weight-reducing cavities on both sides coincide with the edges of the bent connection (2), so that the moving contact pressing plate (4) is located in the weight-reducing cavity.

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