High-voltage connector

Abstract

The high-voltage connector comprises a plug and a socket, the socket comprises a socket outer shell, a socket inner shell, a pair of first terminals and a pair of interlocking pieces, the socket outer shell is arranged on the outer side of the socket inner shell in a sleeving mode, the first terminals are inserted into the two opposite sides in the socket inner shell, and the pair of interlocking pieces are arranged in the middle of the socket inner shell; the plug comprises a plug outer shell, a plug inner shell, a pair of second terminals, a wire connected with the second terminals and a plugging terminal, the plug outer shell sleeves the plug inner shell, the second terminals are inserted into two opposite sides in the plug inner shell, the plugging terminal is arranged in the middle of the plug inner shell, and the end part of the plugging terminal is inserted into the interlocking piece to realize connection; the second terminal comprises a clamping part and a welding part, the first terminal is inserted into the clamping part to realize electric connection, and the welding part is of a double-layer plate stacked structure and is connected with the end part of the wire through ultrasonic welding. The terminal is connected with the wire through ultrasonic welding, and the interlocking piece realizes opposite insertion through an elastic simply supported beam structure, so that the connection stability performance of the plug and the socket is enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of electric connectors, in particular to a high-voltage connector. Background Art

[0002] The new energy high-voltage connectors in the prior art require many parts, have complex processes and high costs. In addition, the contact consists of a terminal body and a sheath, and the contact terminal uses a traditional duckbill shape structure. The large insertion and extraction force is prone to stress relaxation, which affects the electrical contact performance. The terminal and the wire are connected using a traditional crimping process, and there is a risk of fracturing the terminal body and damaging the conductor, affecting the contact performance. The outer shell uses insulating resin, which is more easily deformed in a high temperature and high voltage environment and has no shielding function. Utility Model Content

[0003] Based on the above technical problems, an embodiment of the present application provides a high-voltage connector with a simple structure and excellent electrical contact performance.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a high-voltage connector, comprising: a socket and a plug for plug-in connection, the socket comprising a socket shell, a socket inner shell, a pair of first terminals, and a pair of interlocking parts, the socket shell is sleeved on the outside of the socket inner shell, the first terminals are inserted on opposite sides of the length direction of the socket inner shell, and a pair of interlocking parts are arranged in the middle of the socket inner shell; the plug comprises a plug shell, a plug inner shell, a pair of second terminals and wires connected to the second terminals, and a plug-in terminal, the plug shell is sleeved on the outside of the plug inner shell, the second terminals are inserted on opposite sides of the length direction of the plug inner shell, the plug-in terminal is arranged in the middle of the plug inner shell, and its end is inserted into the interior of the interlocking part to achieve connection; wherein, the second terminal comprises a clamping portion and a welding portion, the first terminal is inserted into the clamping portion of the second terminal to achieve electrical connection, the welding portion is a double-layer plate superimposed structure, and the welding portion is connected to the end of the wire by ultrasonic welding.

[0005] Furthermore, a pair of mounting grooves are provided in the middle of the inner shell of the socket, and the interlocking part includes a cable, an interlocking terminal, and a locking part, one end of the cable is electrically connected to the interlocking terminal; the locking part is sleeved on the front end of the interlocking terminal to lock the interlocking terminal in the mounting groove; an integrally bent C-shaped elastic clamping arm is provided inside the interlocking terminal to accommodate the insertion of the plug-in terminal.

[0006] Furthermore, the rear end of the interlocking terminal is a double-layer plate stacking structure, which is connected to the cable by ultrasonic welding.

[0007] Furthermore, at least one locking spring sheet suitable for being locked to the inner wall of the mounting groove is formed on the locking member.

[0008] Furthermore, each wire is provided with at least one metal shielding ring, and the metal shielding is provided between the wire and the inner shell of the plug.

[0009] Furthermore, the socket housing and the plug housing are both metal housings.

[0010] Furthermore, it also includes a first sealing ring and a second sealing ring. The bottom surface of the socket is also provided with a first annular groove, and the first sealing ring is arranged in the first annular groove. The side surface of the socket is provided with a second annular groove, and the second sealing ring is arranged in the second annular groove.

[0011] Furthermore, it also includes a third sealing ring, which is arranged at the rear end of the plug shell and around the outer side of the wire.

[0012] Furthermore, it also includes a metal rear shell, which is sleeved on the rear side of the third sealing ring and snapped onto the plug shell.

[0013] Furthermore, at least one pair of screw holes for bolts to pass through are provided in the width direction of the outside of the socket shell, and through holes are provided at positions corresponding to the screw holes on the outer side wall of the plug shell, and the socket and the plug are fixedly connected by bolts through the screw holes and the through holes.

[0014] The beneficial effects of the utility model are as follows: the utility model designs a square current-carrying 130-250 rated voltage 650VDC, connects the terminal to the wire or cable through ultrasonic welding, and the high-voltage interlocking parts are plugged in through an elastic simply supported beam structure, thereby enhancing the connection stability of the plug and socket; a metal shell is used to achieve 360-degree all-round shielding, a plurality of sealing rings are provided to achieve waterproof performance, and the risk of falling off due to high-frequency vibration is prevented by fixing with bolts. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall structure of the high voltage connector in the embodiment of the utility model;

[0016] Figure 2 This is a schematic diagram of the socket structure in the high voltage connector in the embodiment of the utility model;

[0017] Figure 3 This is a schematic diagram of the plug structure in the high voltage connector in the embodiment of the utility model.

[0018] Figure 4 This is a schematic diagram of an exploded view of a socket in an embodiment of the utility model;

[0019] Figure 5 This is an exploded schematic diagram of the socket in another perspective in the embodiment of the utility model;

[0020] Figure 6This is a schematic diagram of the exploded structure of the interlocking parts in the embodiment of the utility model;

[0021] Figure 7 It is a schematic cross-sectional structure diagram of the interlocking member in the embodiment of the utility model;

[0022] Figure 8 This is a schematic diagram of the plug in the embodiment of the utility model;

[0023] Fig. 9 This is a schematic cross-sectional structure diagram of a high voltage connector in an embodiment of the utility model;

[0024] Figure markings: 001-socket, 002-plug, 1-plug shell, 2-plug inner shell, 3-second terminal, 4-wire, 5-metal shielding ring, 6-third sealing ring, 7-metal back shell, 8-plug terminal, 9-socket shell, 10-socket inner shell, 11-interlocking piece, 12-first terminal, 120-clamping protrusion, 121-fixing part, 13-first sealing ring, 14-second sealing ring, 91-screw hole, 92-first annular groove, 93-second annular groove, 110-locking piece, 111-interlocking terminal, 112-cable, 1110-elastic clamping arm, 1111-guide part, 101-installation groove, 102-through hole, 103-needle space, 31-clamping part, 32-welding part, 310-stopping part, 1101-locking spring. DETAILED DESCRIPTION

[0025] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation of the utility model is described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific implementation disclosed below.

[0026] The embodiments of the present application provide a high-voltage connector to solve the technical problems of complex connector process, poor electrical performance and poor shielding effect in the prior art.

[0027] like Figures 1 to 9As shown, it is an embodiment of the present application: a high-voltage connector, comprising: a plug 002 and a socket 001 for plug-in connection, the plug 002 comprising a plug shell 1, a plug inner shell 2, a pair of second terminals 3 and a wire 4 connected to the second terminal 3, and a plug terminal 8, the plug shell 1 is sleeved on the outside of the plug inner shell 2, the socket 001 comprises a socket shell 9, a socket inner shell 10, a pair of first terminals 12, and a pair of interlocking parts 11, the socket shell 9 is sleeved on the outside of the socket inner shell 10, the first terminals 12 are inserted at opposite sides of the length direction of the socket inner shell 10, and a pair of interlocking parts 11 are arranged in the middle of the socket inner shell 10; the second terminal 3 is inserted at opposite sides of the inner length direction of the plug inner shell 2, the plug terminal 8 is arranged in the middle of the plug inner shell 2, and its end is inserted into the inside of the interlocking part 11 to realize connection; wherein, the second terminal 3 comprises a clamping portion 31 and a welding portion 32, the first terminal 12 is inserted into the clamping portion 31 to realize electrical connection, and the welding portion 32 is a double-layer plate superimposed structure, which is connected to the end of the wire 4 by ultrasonic welding.

[0028] like Figure 8 , Fig. 9 As shown, the second terminal 3 is formed by a plate being integrally bent to form a clamping portion 31 with an opening at one end and a welding portion 32 formed by folding the other end to form a double-layer plate stack. Ultrasonic welding is used at the connection between the second terminal 3 and the wire 4 to achieve electrical connection between the two, which can ensure the strength of the connection and good sealing after the connection.

[0029] Another preferred embodiment is that a plurality of outwardly protruding stop portions 310 may be provided on the clamping portion 31 , thereby enabling a stable connection with the inner housing 2 of the plug.

[0030] like Figure 6 , Figure 7 As shown, a pair of mounting grooves 101 are provided in the middle of the inner shell 10 of the socket, and each interlocking member 11 includes a cable 112, an interlocking terminal 111, and a locking member 110, and one end of the cable 112 is electrically connected to the interlocking terminal 111; the locking member 110 is sleeved on the front end of the interlocking terminal 111, and is used to lock the interlocking terminal 111 in the mounting groove 101; the inside of the interlocking terminal 111 is provided with a C-shaped elastic clamping arm 1110 with an outward opening which is integrally bent along one end wall, and the other end wall is bent inward to form a guide portion 1111 close to the elastic clamping arm 1110, that is, a so-called elastic simply supported beam structure is constituted, and the C-shaped elastic clamping arm 1110 can be used to accommodate the insertion of the plug-in terminal 8.

[0031] Reference Figure 2 , Figure 4-Figure 6Two needle-accommodating spaces 103 are provided on opposite sides of the length direction of the socket inner shell 10. The first terminal 12 is flat and passes through the two needle-accommodating spaces 103 inside the socket inner shell 10. The upper and lower side surfaces of the first terminal 12 are provided with serrated clamping protrusions 120 for stably connecting inside the needle-accommodating spaces 103. A fixing portion 121 with a right-angle bend and a threaded hole is provided at the outer end of the first terminal 12. The screw can be passed through the threaded hole on the fixing portion 121 to further fix the connector; a pair of mounting grooves 101 that penetrate the socket inner shell 10 are provided in the middle of the socket inner shell 10 for the interlocking member 11 to pass through, and at least one locking spring 1101 suitable for locking to the inner wall of the mounting groove 101 is formed on each locking member 110.

[0032] like Fig. 9 As shown, in another preferred embodiment, similar to the connection between the second terminal 3 and the wire 4, the rear end of the interlocking terminal 111 also adopts a double-layer plate stacking structure, which is connected to the cable 112 by ultrasonic welding to enhance the connection performance.

[0033] like Figure 4 and Figure 5 As shown, another preferred embodiment is that the socket 001 may also be provided with a first sealing ring 13 and a second sealing ring 14. Specifically, a first annular groove 92 is provided on the bottom surface of the socket 001, and the first sealing ring 13 is arranged in the first annular groove 92. A second annular groove 93 is provided on the side surface of the socket, and the second sealing ring 14 is arranged in the second annular groove 93. By providing two sealing rings, the waterproof performance of the entire high-voltage connector can be achieved.

[0034] Reference Figure 3 and Figure 8 Each wire 4 extending out of the plug inner shell 2 is provided with at least one metal shielding ring 5, and the metal shielding ring 5 is wrapped around the outer periphery of the wire 4 to further enhance the shielding effect of the overall connector.

[0035] The socket shell 9 and the plug shell 1 in this embodiment are both metal shells, and specifically aluminum alloy metal die-castings can be selected, which can play a role of high temperature resistance; because the plug 002 and the socket 001 are tightly connected after being plugged in, the two metal shells are tightly connected, so they can play a full-range shielding role.

[0036] Another preferred method is: a third sealing ring 6 can also be provided on the plug 002. Specifically, the third sealing ring 6 is provided at the rear end of the plug housing 1 and around the outer side of the wire 4. A metal rear shell 7 can also be provided at the rear end of the third sealing ring 6. The metal rear shell 7 is sleeved on the outer periphery of the wire 4 and the rear end of the third sealing ring 6 on the plug housing 1, and is snap-fitted and connected with the plug housing 1. The provision of the metal rear shell 7 and the sealing ring further enhances the sealing and waterproof performance and the omnidirectional shielding performance of the high-voltage connector.

[0037] Another preferred method is: at least one pair of screw holes 91 for bolts to pass through are provided in the width direction of the outside of the socket shell 9, and through holes 102 are provided at the corresponding positions of the outer wall of the plug shell 1 and the screw holes 91. The socket 001 and the plug 002 can be fixedly connected by bolts through the screw holes 91 and the through holes 102, and the risk of falling off due to high-frequency vibration can be prevented by fixing with bolts.

[0038] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0039] The above-mentioned embodiments only express the implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the invention patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A high voltage connector, characterized in that: include: A socket and a plug for plug-in connection, the socket comprising a socket shell, a socket inner shell, a pair of first terminals, and a pair of interlocking parts, the socket shell is sleeved on the outside of the socket inner shell, the first terminals are inserted at opposite sides of the length direction of the socket inner shell, and a pair of interlocking parts are arranged in the middle of the socket inner shell; the plug comprises a plug shell, a plug inner shell, a pair of second terminals and wires connected to the second terminals, and a plug-in terminal, the plug shell is sleeved on the outside of the plug inner shell, the second terminals are inserted at opposite sides of the length direction of the plug inner shell, the plug-in terminal is arranged in the middle of the plug inner shell, and its end is inserted into the interior of the interlocking parts to achieve connection; wherein, the second terminal comprises a clamping portion and a welding portion, the first terminal is inserted into the clamping portion of the second terminal to achieve electrical connection, the welding portion is a double-layer plate superimposed structure, and the welding portion is connected to the end of the wire by ultrasonic welding.

2. The high voltage connector according to claim 1, characterized in that: A pair of mounting grooves are provided in the middle of the inner shell of the socket, and the interlocking part includes a cable, an interlocking terminal, and a locking part. One end of the cable is electrically connected to the interlocking terminal; the locking part is sleeved on the front end of the interlocking terminal to lock the interlocking terminal in the mounting groove; an integrally bent C-shaped elastic clamping arm is provided inside the interlocking terminal to accommodate the insertion of the plug-in terminal.

3. The high voltage connector according to claim 2, characterized in that: The rear end of the interlocking terminal is a double-layer plate stacking structure, which is connected to the cable by ultrasonic welding.

4. The high voltage connector according to claim 2, characterized in that: At least one locking spring sheet suitable for being locked to the inner wall of the mounting groove is formed on the locking member.

5. The high voltage connector according to claim 1, characterized in that: At least one metal shielding ring is arranged on each wire, and the metal shielding ring is arranged between the wire and the inner shell of the plug.

6. The high voltage connector according to claim 1, characterized in that: The socket shell and the plug shell are both metal shells.

7. The high voltage connector according to claim 1, characterized in that: It also includes a first sealing ring and a second sealing ring. The bottom surface of the socket is also provided with a first annular groove, and the first sealing ring is arranged in the first annular groove. The side surface of the socket is provided with a second annular groove, and the second sealing ring is arranged in the second annular groove.

8. The high voltage connector according to claim 1, characterized in that: The device also comprises a third sealing ring, which is arranged at the rear end of the plug housing and around the outer side of the wire.

9. The high voltage connector according to claim 8, characterized in that: It also includes a metal rear shell, which is sleeved on the rear side of the third sealing ring and buckled on the plug shell.

10. The high voltage connector according to claim 1, characterized in that: At least one pair of screw holes for bolts to pass through are arranged on the width direction of the outside of the socket shell, and through holes are arranged on the outer wall of the plug shell at positions corresponding to the screw holes. The socket and the plug are fixedly connected by bolts passing through the screw holes and the through holes.

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