High-voltage direct-current contactor with sealing structure

Abstract

The utility model discloses a high-voltage direct current contactor with a sealing structure, which comprises a frame, a top plate of the frame is provided with a mounting hole for mounting a leading-out terminal, the leading-out terminal is mounted in the mounting hole, and a sealing ring is arranged between the leading-out terminal and the mounting hole. Compared with the prior art, the sealing structure is high in air tightness, the risk of air leakage of products is reduced, and the service life of the products is prolonged or guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of high voltage DC contactor technology, and in particular to a high voltage DC contactor with a sealed structure. Background Technology

[0002] With the rapid development of new energy sources in China, such as electric vehicles (pure electric and plug-in hybrid), photovoltaics, wind power, and energy storage, the demand for high-voltage DC contactors has increased exponentially. Currently, most high-voltage DC contactor products manufactured domestically and internationally employ vacuuming or filling with hydrogen / nitrogen / inert gas for arc extinguishing. To ensure airtightness, ceramic brazing, laser sealing, and epoxy resin sealing are used both domestically and internationally. Ceramic brazing and laser sealing products, if the welding process is leak-proof, are generally leak-free, but require high-precision manufacturing processes and are very expensive. Epoxy resin sealing products are cheaper, but thermal shocks during the product's lifespan can cause the sealant to age and fail, compromising airtightness and significantly shortening the product's lifespan.

[0003] Therefore, this utility model needs to provide a high-voltage DC contactor with a simple structure and high airtightness. Utility Model Content

[0004] The purpose of this invention is to provide a high-voltage DC contactor with a sealed structure, thereby solving the aforementioned problems existing in the prior art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A high-voltage DC contactor with a sealed structure includes: a frame, the top plate of the frame having a mounting hole for mounting a lead-out terminal, the lead-out terminal being mounted in the mounting hole, and a sealing ring being provided between the lead-out terminal and the mounting hole.

[0007] Furthermore, the sealing ring is made of rubber.

[0008] Furthermore, the mounting hole is also provided with a mounting groove for installing the sealing ring.

[0009] Furthermore, the mounting groove is connected to the inner wall of the mounting hole on the side near the mounting hole.

[0010] Furthermore, the mounting hole is also provided with multiple anti-retraction mechanisms, which are used to prevent the lead-out end from exiting the mounting hole.

[0011] Furthermore, the anti-retreat mechanism includes a connecting rod, the upper end of which is connected to the fixed top plate of the frame, and the lower end of which is also provided with a limit buckle.

[0012] Furthermore, the lead-out end is also provided with a groove that cooperates with the limiting buckle.

[0013] Furthermore, a retaining ring is provided around the mounting hole.

[0014] Furthermore, the connecting rod and the limiting buckle are connected by an integral molding process.

[0015] The beneficial effects of this utility model are:

[0016] Because this invention incorporates a sealing ring between the lead-out end and the mounting hole, it improves the sealing performance between them. Furthermore, an anti-retraction mechanism for the lead-out end is designed on the mounting hole of the frame to ensure the compression of the sealing ring, thereby enhancing the product's airtightness. Finally, epoxy resin is used for sealing. Even if the sealant ages and fails, the sealing ring still provides a seal, reducing the risk of product leakage and extending or guaranteeing the product's lifespan. Attached Figure Description

[0017] Figure 1 This is an exploded view of the high-voltage DC contactor with a sealed structure according to this utility model;

[0018] Figure 2 This is a structural diagram of the high-voltage DC contactor with a sealed structure according to this utility model.

[0019] Figure label:

[0020] Frame 1, top plate 2, lead-out end 3, mounting hole 4, sealing ring 5, mounting groove 6, anti-reverse mechanism 7. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the scope of the present utility model.

[0022] It should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model or simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0023] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0024] The term “exemplary” as used herein means “serving as an example, embodiment, or illustration.” Any embodiment illustrated herein as “exemplary” is not necessarily to be construed as superior to or better than other embodiments.

[0025] Furthermore, to better illustrate this application, numerous specific details are provided in the following detailed embodiments. Those skilled in the art should understand that this application can be implemented without certain specific details. In some instances, methods, means, components, and circuits well-known to those skilled in the art have not been described in detail in order to highlight the main points of this application.

[0026] like Figure 1 and Figure 2 As shown, a high-voltage DC contactor with a sealed structure includes: a frame 1, a top plate 2 of the frame 1 having a mounting hole 4 for mounting a lead-out end 3, the lead-out end 3 being installed in the mounting hole 4, and a sealing ring 5 being provided between the lead-out end 3 and the mounting hole 4.

[0027] As can be seen from the above, since a sealing ring 5 is provided between the lead-out end 3 and the mounting hole 4, the sealing performance between the lead-out end 3 and the mounting hole 4 can be improved. Furthermore, an anti-retraction mechanism for the lead-out end is designed on the mounting hole 4 of the frame 1 to ensure the compression of the sealing ring 5, thereby enhancing the airtightness of the product. Then, epoxy resin is used for sealing. Even if the sealant ages and fails, the sealing ring will still provide a seal, thereby reducing the risk of product leakage and extending or guaranteeing the product's lifespan.

[0028] In this embodiment, the sealing ring 5 is made of rubber. However, in actual needs, the sealing ring 5 can be made of other materials with good sealing performance, which will not be described in detail.

[0029] To facilitate the installation of the sealing ring 5, the mounting hole 4 is also provided with a mounting groove 6 for installing the sealing ring 5. During assembly, the sealing ring 5 is installed in the mounting groove 6. The side of the mounting groove 6 near the mounting hole 4 is connected to the inner wall of the mounting hole 4. In order to ensure that the mounting groove 6 can be firmly connected to the mounting hole 4, the side of the mounting groove 6 near the mounting hole 4 is connected to the inner wall of the mounting hole 4 by integral molding, thereby ensuring that the mounting groove and the mounting hole can be tightly connected and firmly fixed to each other.

[0030] In addition, it should be noted that the mounting hole 4 is also provided with multiple anti-retraction mechanisms 7. The anti-retraction mechanisms 7 can effectively prevent the lead-out end 3 from exiting the mounting hole, ensuring the compression of the sealing ring 5, thereby enhancing the airtightness of the product. Then, epoxy resin is used for sealing. Even if the sealant ages and fails, the sealing ring 5 will still provide a seal, thereby reducing the risk of product leakage and extending or ensuring the product's lifespan.

[0031] Specifically, the anti-retraction mechanism 7 includes a connecting rod. The upper end of the connecting rod is integrally formed and connected to the top plate of the frame 1, thereby ensuring that the connecting rod and the top plate of the frame 1 can be tightly connected. The lower end of the connecting rod is also provided with a limiting buckle. The limiting buckle on the connecting rod cooperates with the groove 8 on the lead-out end 3, thereby preventing the lead-out end 3 from exiting from the mounting hole 4, ensuring the compression of the sealing ring 5, reducing the risk of product leakage, and extending or ensuring the product's lifespan.

[0032] In addition, it should be noted that a retaining ring 9 is provided around the mounting hole 4. The retaining ring 9 can effectively prevent the adhesive from flowing into the mounting hole 4 during dispensing.

[0033] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A high voltage DC contactor having a sealed construction, comprising: The utility model relates to a frame, the top plate of frame is equipped with the mounting hole for installing the lead-out end, the lead-out end is installed in the mounting hole, characterized by, the sealing ring is equipped between the lead-out end with the mounting hole.

2. The high-voltage DC contactor with a sealed structure according to claim 1, characterized in that: The sealing ring is made of rubber.

3. The high-voltage DC contactor with a sealed structure according to claim 1, characterized in that: The mounting hole is also provided with a mounting groove for installing the sealing ring.

4. The high-voltage DC contactor with a sealed structure according to claim 3, characterized in that: The mounting groove is connected with the inner wall of the mounting hole near one side of the mounting hole.

5. The high-voltage DC contactor with a sealed structure according to claim 4, characterized in that: The mounting hole is also provided with a plurality of anti-withdrawal mechanisms for preventing the lead-out end from withdrawing from the mounting hole.

6. The high-voltage DC contactor with a sealed structure according to claim 5, characterized in that: The anti-withdrawal mechanism includes a connecting rod, the upper end of the connecting rod is connected with the frame top plate, and the lower end of the connecting rod is also provided with a limiting buckle.

7. The high-voltage DC contactor with a sealed structure according to claim 1, characterized by: The lead-out end is also provided with a groove matched with the limiting buckle.

8. The high-voltage DC contactor with a sealed structure according to claim 1, characterized in that: The mounting hole is also provided with a retaining ring.

9. The high-voltage DC contactor with a sealed structure according to claim 6, characterized in that: The connecting rod and the limiting buckle are connected by an integral molding mode.

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