Microminiature high-voltage connector

Abstract

The utility model discloses a microminiature high-voltage connector, which relates to the technical field of connectors and comprises a plug and a socket, the plug comprises a plug insulator, the plug insulator is of a stepped structure, a first wire sealing body is mounted in the plug insulator, a plug contact piece is mounted in the first wire sealing body, a plug shell is sleeved outside the plug insulator, and the plug shell is sleeved outside the socket. A sealing assembly is arranged at the tail part of the plug shell; the socket comprises a socket insulator corresponding to the plug insulator, a second wire sealing body is arranged in the socket insulator, socket contact pieces corresponding to the jacks are arranged in the second wire sealing body, the socket insulator is sleeved with a socket shell, and a sealing piece is arranged at the tail of the socket shell. When the plug contact element and the socket contact element are plugged and matched, the plug insulator is arranged between the plug insulator and the plug shell, and the socket shell is sleeved outside the plug shell. The plug insulator is of an annular stepped structure, air trapping can be avoided, it is guaranteed that the contact piece is installed in place, and the contact piece is easier to install due to the fact that the contact piece adopts various sealing structures such as the sealing piece and the wire sealing body.

Description

Technical Field

[0001] This utility model relates to the field of connector technology, and in particular to a high-voltage connector. Background Technology

[0002] Connectors operating between 1000V and 120000V or higher are called high-voltage electrical connectors. High-voltage connectors are widely used in aviation, aerospace, nuclear power, and other fields. Due to limitations in electrical clearance and creepage distance design, high-voltage connectors have larger structural dimensions and more limited structural forms, failing to meet the application requirements of various scenarios. Currently, high-voltage connectors are relatively large, and interface sealing often uses rubber protrusions. Rubber is prone to deformation and sealing failure. Traditional high-voltage connectors often use potting or injection molding, which requires high-precision processes, is prone to air bubbles, affecting withstand voltage performance, and is difficult to mold. Furthermore, traditional high-voltage connector contact fixing methods often use insert fixing (the contact is fixed by being inserted into the insulator), forced fixing, and boss fixing. These fixing methods make it difficult to ensure the contact position, easily leading to misalignment, retraction, and problems such as pinhole misalignment.

[0003] Existing technology, such as the Chinese utility model patent with publication number CN219717315U and publication date of September 19, 2023, discloses a high-voltage resistant connector, including a plug and a socket that mates with the plug. The socket includes a socket housing, a grounding spring, and a hole insulator. The hole insulator passes through the socket housing and its length is greater than the length of the socket housing. The grounding spring is sleeved around the periphery of the hole insulator. Although this patent increases the creepage distance when the socket and plug are mated by making the length of the hole insulator greater than that of the socket housing, allowing the hole insulator to extend into the plug and mate with the pins, and enabling its application in high-voltage working environments, in practical applications, when the hole insulator and bushing are mated, the need for a sealed connection can lead to air entrapment, affecting the mating result of the plug and socket. Furthermore, the need for a long hole insulator can result in a large connector size, which cannot meet the application requirements of various scenarios. Utility Model Content

[0004] To address the shortcomings in the aforementioned background technology, this utility model proposes a miniature high-voltage connector, which solves the problem that existing high-voltage connectors are limited by electrical clearance and creepage distance in design, resulting in large structural dimensions and simple structural forms that cannot meet the application needs of various scenarios in order to achieve high-voltage transmission functions.

[0005] The technical solution of this utility model is implemented as follows: A miniature high-voltage connector includes a plug and a socket. The plug includes a plug insulator with a stepped structure. A sealing body is installed inside the plug insulator, and a plug contact is installed inside the sealing body. A plug housing is fitted over the plug insulator, and a sealing component is provided at the tail of the plug housing. The socket includes a socket insulator corresponding to the plug insulator. A sealing body is installed inside the socket insulator, and a socket contact corresponding to the socket hole is installed inside the sealing body. A socket housing is fitted over the socket insulator, and a sealing component is provided at the tail of the socket housing. When the plug contact and the socket contact are plugged in, the plug insulator is positioned between the plug insulator and the plug housing, and the socket housing is fitted over the plug housing.

[0006] More preferably, the plug insulator is provided with at least two O-rings corresponding to the socket insulator.

[0007] More preferably, the plug insulator has a groove on its annular stepped outer wall that mates with an O-ring.

[0008] More preferably, the sealing body includes an insulating sleeve and a contact sleeve, the contact sleeve being encapsulated on the plug insulator by the insulating sleeve, and the insulating sleeve being encapsulated in the plug insulator by a sealing assembly.

[0009] More preferably, the inner and outer walls of the insulating sleeve are provided with several corresponding annular grooves, and a sealing ring is provided in the annular groove.

[0010] More preferably, the sealing assembly includes a cable accessory that is threaded onto the tail of the plug housing.

[0011] More preferably, the outer wall of the plug housing is provided with a connecting nut that mates with the plug housing.

[0012] More preferably, the sealing body two includes a contact sleeve two and an insulating sleeve two, with the contact sleeve two being encapsulated within the socket insulation body by the insulating sleeve two.

[0013] More preferably, the outer and inner walls of the insulating sleeve two are provided with several corresponding limiting grooves, and the limiting grooves are provided with sealing rings two.

[0014] More preferably, the seal includes a cable accessory that is threaded onto the tail of the socket housing.

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

[0016] 1. The outer wall of the plug insulator of this utility model has a ring-shaped stepped structure, which can prevent air entrapment, ensure that the contact is installed in place, and ensure the stability of the plug connection. The contact adopts a multi-seal extrusion structure of sealing element and sealing wire body, which makes it easier to install. An insulating sleeve is added to the outside of the contact to ensure that the contact is installed in place without skewing.

[0017] 2. After the plug and socket are fully engaged, the interface between the plug insulator and the socket insulator is sealed by an O-ring, and the groove increases creepage, thereby reducing the size.

[0018] 3. The insulating sleeve and sealing ring are fitted together on the cut surface to form a soft-hard-soft shape, making the assembly easier to install; the tail end uses cable accessories and wire accessories to connect to the corresponding housing threaded connection, and the tail end is not glued, making it easy to replace. Attached Figure Description

[0019] To more clearly illustrate the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the structure of the plug of this utility model;

[0022] Figure 3 This is a structural schematic diagram of the socket of this utility model.

[0023] In the diagram: 1-Cable accessory, 2-Insulating sleeve one, 3-Sealing ring one, 4-Plug insulator, 5-Plug housing, 6-Connecting nut, 7-Socket, 8-O-ring, 9-Contact sleeve one, 10-Socket housing, 11-Socket insulator, 12-Pin, 13-Contact sleeve two, 14-Sealing ring two, 15-Insulating sleeve two, 16-Cable accessory. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] like Figure 1As shown in Embodiment 1, a miniature high-voltage connector includes a plug and a socket. The plug includes a plug insulator 4 with a stepped structure. A sealing wire body is installed inside the plug insulator 4, and a plug contact is installed inside the sealing wire body. A plug housing 5 is fitted over the plug insulator 4, and a sealing component is provided at the tail of the plug housing 5. The socket includes a socket insulator 11 corresponding to the plug insulator 4. A sealing wire body is installed inside the socket insulator 11, and a socket contact corresponding to the socket hole 7 is installed inside the sealing wire body. A socket housing 10 is fitted over the socket insulator 11, and a sealing component is provided at the tail of the socket housing 10. When the plug contact and the socket contact are inserted and mated, the end of the plug insulator 4 is positioned between the plug insulator 4 and the plug housing 5, and the head of the socket housing 10 is fitted over the plug housing 5. The outer wall of the plug insulator 4 has an annular stepped structure, which can prevent air trapping, ensure that the contact is installed in place, and ensure insertion stability. The contact adopts a combination of sealing components and sealing wire bodies with multiple sealing and extrusion structures, making it easier to install. An insulating sleeve is added to the outside of the contact to ensure that the contact is installed in place without any misalignment.

[0026] Specifically, the plug contact is a pin 12, and a sealing body is used to fix the socket 7. The sealing assembly fixes the sealing body containing the plug contact inside the plug housing 5. The socket contact is a pin 12. The plug contact and the socket contact are engaged, which is the plug and socket engagement. An annular groove is formed between the plug insulator 4 and the plug housing 5. The socket insulator 11 is inserted into the annular groove. A groove is formed between the socket insulator 11 and the socket housing 10 that allows the plug housing 5 to be inserted, which facilitates the formation of a multiple sealing structure and ensures the safety of the engagement between the pin 12 and the socket 7.

[0027] like Figure 1 As shown in Embodiment 2, a miniature high-voltage connector differs from Embodiment 1 in that the plug insulator 4 has at least two O-rings 8 corresponding to the socket insulator 11. The annular stepped outer wall of the plug insulator 4 has grooves that mate with the O-rings 8. The O-rings 8 are positioned within these grooves, fixing their location. After insertion, the O-rings 8 create an interface seal between the plug insulator 4 and the socket insulator 11, while the grooves increase creepage, thus reducing the overall size.

[0028] In this embodiment, the sealing body includes an insulating sleeve 2 and a contact sleeve 9. The contact sleeve 9 is encapsulated on the plug insulator 4 through the insulating sleeve 2, and the insulating sleeve 2 is encapsulated inside the plug insulator 4 by a sealing assembly. The insulating sleeve 2 has a cylindrical tube structure, and the contact sleeve 9 has a stepped cylindrical tube structure. The end of the contact sleeve 9 is flush with the end of the insulating sleeve. The insertion hole 7 is installed inside the contact sleeve 9, providing good fixation and further ensuring that the contact is installed in place. The inner and outer walls of the insulating sleeve 2 are provided with several corresponding annular grooves, and sealing rings 3 are provided in the annular grooves. The sealing rings 3 located on the outer wall of the insulating sleeve 2 can increase the installation stability of the insulating sleeve 2 and the plug insulator 4, and the sealing rings 3 located on the inner wall of the insulating sleeve 2 are used to increase the installation stability of the insulating sleeve 2 on the plug contact.

[0029] In this embodiment, the sealing assembly includes a cable accessory 1, which is threadedly connected to the tail of the plug housing 5. A wave-damping sleeve is provided between the cable accessory 1 and the plug housing 5. The threaded connection between the cable accessory 1 and the plug housing 5 facilitates replacement and allows for the encapsulation of the cable body 1 and the plug insulator 4 without the need for adhesive injection. For the installation and removal of the cable accessory 1, a connecting nut 6 is provided on the outer wall of the plug housing 5 to mate with it. The connecting nut 6 is installed on the plug housing 5 via a loosening ring, and the connecting nut 6 enhances the connection between the plug and the socket.

[0030] All other structures are the same as in Example 1.

[0031] like Figures 1-3 As shown in Embodiment 3, a miniature high-voltage connector differs from Embodiment 1 in that the sealing body 2 includes a contact sleeve 2 13 and an insulating sleeve 2 15. The contact sleeve 2 13 is encapsulated within the socket insulator 11 by the insulating sleeve 2 15. The outer and inner walls of the insulating sleeve 2 15 are provided with several corresponding limiting grooves, and a sealing ring 2 14 is provided within each limiting groove. The insulating sleeve 2 15 and the sealing ring 2 14 mate on a cross-section to form a soft-hard-soft configuration, making installation easier. The sealing element includes a cable accessory 16, which is threaded onto the tail of the socket housing 10. The tail end is not glued for easy replacement.

[0032] All other structures are the same as in Example 2.

[0033] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A miniature high-voltage connector, characterized in that: Includes a plug and a socket. The plug includes a plug insulator (4), which has a stepped structure. A sealing wire is installed inside the plug insulator (4), and a plug contact is installed inside the sealing wire. The plug insulator (4) is covered with a plug housing (5), and a sealing component is provided at the tail of the plug housing (5). The socket includes a socket insulator (11) corresponding to the plug insulator (4), a sealing wire body II is provided inside the socket insulator (11), a socket contact corresponding to the socket hole (7) is provided inside the sealing wire body II, and a socket housing (10) is provided outside the socket insulator (11), and a sealing element is provided at the tail of the socket housing (10). When the plug contact and the socket contact are plugged in, the end of the plug insulator (4) is positioned between the plug insulator (4) and the plug housing (5), and the head of the socket housing (10) is fitted over the plug housing (5).

2. The miniature high-voltage connector according to claim 1, characterized in that: The plug insulator (4) is provided with at least two O-rings (8) corresponding to the socket insulator (11).

3. The miniature high-voltage connector according to claim 2, characterized in that: The plug insulator (4) has a groove on its annular stepped outer wall that mates with the O-ring (8).

4. The miniature high-voltage connector according to claim 2 or 3, characterized in that: The sealing body includes an insulating sleeve (2) and a contact sleeve (9). The contact sleeve (9) is encapsulated on the plug insulator (4) by the insulating sleeve (2). The insulating sleeve (2) is encapsulated inside the plug insulator (4) by a sealing assembly.

5. The miniature high-voltage connector according to claim 4, characterized in that: The inner and outer walls of the insulating sleeve (2) are provided with several corresponding annular grooves, and a sealing ring (3) is provided in the annular groove.

6. The miniature high-voltage connector according to any one of claims 1 to 3 and 5, characterized in that: The sealing assembly includes a cable accessory (1), which is threaded to the tail of the plug housing (5).

7. The miniature high-voltage connector according to claim 6, characterized in that: The outer wall of the plug housing (5) is provided with a connecting nut (6) that mates with the plug housing (5).

8. The miniature high-voltage connector according to any one of claims 1 to 3, 5 and 7, characterized in that: The second sealing body includes a second contact sleeve (13) and a second insulating sleeve (15), with the second contact sleeve (13) encapsulated within the socket insulator (11) by the second insulating sleeve (15).

9. The miniature high-voltage connector according to claim 8, characterized in that: The outer and inner walls of the insulating sleeve 2 (15) are provided with several corresponding limiting grooves, and the limiting grooves are provided with sealing ring 2 (14).

10. The miniature high-voltage connector according to any one of claims 1 to 3, 5, 7 and 9, characterized in that: The seal includes a cable accessory (16) which is threaded to the tail of the socket housing (10).

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