A high current coaxial charging connector

Abstract

The utility model discloses a big current coaxial charging connector of blind insertion can. Adopted technical scheme: the plug and the socket of plug -in cooperation, the plug includes plug shell, the first center axle cover of coaxial setting in the post type wiring terminal subassembly of plug shell, the socket includes socket shell, the second center axle cover of coaxial setting in the post cover type wiring terminal subassembly of socket shell, the socket shell upper end is equipped with the conical concave surface, the plug shell is equipped with the conical convex surface with conical concave surface cooperation.

Description

TECHNICAL FIELD

[0001] The utility model belongs to new energy automobile accessories field especially, it relates to a charging connector. BACKGROUND

[0002] The large current charging connector is specially designed for the current transmission charging interface, and is usually used for electric vehicles and other devices requiring fast charging. The traditional charging connector structure comprises a plug and a socket in plug-in cooperation, the plug comprises a plug shell, a terminal rubber core arranged on the plug shell and a female terminal arranged in the terminal rubber core, and the socket comprises a socket shell, a male terminal arranged in the socket shell. The disadvantages of the traditional charging connector are that the plug-in of the plug and the socket has directionality, blind insertion cannot be realized, and the use environment (place) is more limited. SUMMARY

[0003] The utility model solves the technical problem to provide a large current coaxial charging connector of blind insertion.

[0004] In order to solve the above problems, the utility model adopts the technical scheme: the plug and the socket are in plug-in cooperation, the plug comprises a plug shell, a coaxial column type wiring terminal assembly arranged in the first center shaft sleeve of the plug shell; the socket comprises a socket shell, a coaxial column sleeve type wiring terminal assembly arranged in the second center shaft sleeve of the socket shell, and the socket shell is provided with a conical concave surface on the upper end, and the plug shell is provided with a conical convex surface matched with the conical concave surface in the plug shell.

[0005] The column type wiring terminal assembly comprises an insulating center column and a first terminal group integrally formed in the insulating center column, the first terminal group comprises PE line pins, L line pins, N line pins, CC line pins and CP line pins arranged in sequence and concentrically, the upper ends of the PE line pins, the L line pins, the N line pins, the CC line pins and the CP line pins are provided with annular contact surfaces exposed to the side wall of the insulating center column.

[0006] The lower end of the insulating center column is provided with a base, the base is provided with a PCB connected with the L line pins, the N line pins, the CC line pins and the CP line pins, and the PCB is provided with a group of switching terminals in communication with the L line pins, the N line pins, the CC line pins and the CP line pins.

[0007] The base is connected with the plug shell through the screw rods at both ends.

[0008] The column sleeve type terminal assembly comprises an insulating column sleeve and a second terminal group arranged in the insulating column sleeve, the second terminal group comprises a set of connection pieces arranged in a circle and arranged in sequence in height, the connection pieces are provided with elastic contacts in contact with the PE wire pin, the L wire pin, the N wire pin, the CC wire pin and the CP wire pin respectively at upper ends of the connection pieces, and are provided with wire pins at lower ends of the connection pieces.

[0009] A set of insertion grooves are arranged in the insulating column sleeve, and a cover plate is arranged at a bottom of the insulating column sleeve, the connection pieces are inserted into the insertion grooves and are fixed by crimping through the cover plate, and the cover plate is connected with the socket shell through a screw rod.

[0010] Sealing rings are arranged on side walls and bottoms of the plug shell and the socket shell.

[0011] Mounting holes are arranged at ends of the plug shell and the socket shell.

[0012] The large-current coaxial charging connector has the following advantages: a 360° blind insertion structure is adopted, the socket shell is a large conical surface, and omnidirectional guidance is achieved, so that the plug can be inserted in any direction and various use scenarios can be coped with.

[0013] The utility model will be further described below in combination with the drawings of the specification. DRAWINGS

[0014] Figure 1 It is a structure schematic view of the plug of the utility model;

[0015] Figure 2 It is a sectional view of the plug of the utility model;

[0016] Figure 3 It is an exploded view of the plug of the utility model;

[0017] Figure 4 It is a sectional view of the column type terminal assembly of the utility model;

[0018] Figure 5 It is an exploded view of the column type terminal assembly of the utility model;

[0019] Figure 6 It is a structure schematic view of the socket of the utility model;

[0020] Figure 7 It is a sectional view of the socket of the utility model;

[0021] Figure 8 It is an exploded view of the socket of the utility model;

[0022] Figure 9 It is an exploded view of the column sleeve type terminal assembly of the utility model;

[0023] Figure 10 This is a schematic diagram of the connection between the plug and socket of this utility model;

[0024] Figure 11 This is a schematic diagram of the progressive contact of the terminal of this utility model. Detailed Implementation

[0025] Reference Figures 1-11 As shown, the high-current coaxial charging connector of this utility model includes a plug 1 and a socket 2 for mating. The plug 1 includes a plug housing 3 and a post-type terminal assembly 5 coaxially disposed within a first central bushing 4 of the plug housing 3. The first central bushing 4 is integrally formed with the plug housing 3. The socket 2 includes a socket housing 6 and a post-type terminal assembly 8 coaxially disposed within a second central bushing 7 of the socket housing 6. The second central bushing 7 is integrally formed with the socket 2. The upper end of the socket housing 6 is provided with a conical concave surface 9, and the plug housing 3 is provided with a conical convex surface 10 that mates with the conical concave surface 9. When the plug 1 and the socket 2 are plugged in, the post-type terminal assembly 5 is inserted into the post-type terminal assembly 8, and the first central bushing 4 is inserted into the second central bushing 7, thereby achieving the connection of each terminal.

[0026] Preferably, the post-type terminal assembly 5 includes an insulating central post 11 and a first terminal group 12 integrally formed within the insulating central post 11. The first terminal group 12 includes a PE wire pin 13, an L wire pin 14, an N wire pin 15, a CC wire pin 16, and a CP wire pin 17 arranged concentrically in descending order of height. The upper ends of the PE wire pin 13, L wire pin 14, N wire pin 15, CC wire pin 16, and CP wire pin 17 are all provided with annular contact surfaces 18 exposed to the sidewall of the insulating central post 11. The post-type terminal assembly 8 includes an insulating post sleeve 23 and a second terminal group 24 disposed within the insulating post sleeve 23. The second terminal group 24 includes a set of circumferentially arranged connecting pieces 25 arranged in descending order of height. The upper end of the connecting piece 25 is provided with an elastic contact 26 that contacts the PE wire pin 13, L wire pin 14, N wire pin 15, CC wire pin 16, and CP wire pin 17 respectively, and the lower end is provided with a wiring pin 27. When the plug 1 and socket 2 are inserted, the elastic contacts 26 of each connecting piece 25 make progressive contact with the PE line pin 13, L line pin 14, N line pin 15, CC line pin 16 and CP line pin 17 respectively (e.g., Figure 11 (As shown).

[0027] Preferably, the lower end of the insulating center post 11 is provided with a base 19, and the base 19 contains a PCB board 20 that connects to the L-line pin 14, N-line pin 15, CC-line pin 16, and CP-line pin 17. The PCB board 20 has a set of adapter terminals 21 that are connected to the L-line pin 14, N-line pin 15, CC-line pin 16, and CP-line pin 17 to facilitate wiring of the L-line pin 14, N-line pin 15, CC-line pin 16, and CP-line pin 17.

[0028] Preferably, the base 19 is connected to the plug housing 3 via screws 22 at both ends.

[0029] Preferably, the insulating sleeve 23 has a set of slots 28 and a cover plate 29 at the bottom. The connecting piece 25 is inserted into the slots 28 and fixed by pressing with the cover plate 29. The cover plate 29 is connected to the socket housing 6 by a screw 22. This facilitates the assembly of the connecting piece 25.

[0030] Preferably, sealing rings 30 are provided on the side walls and bottom of the plug housing 3 and the bottom of the socket housing 6 to achieve the waterproof performance of the product.

[0031] Preferably, both the plug housing 3 and the socket housing 6 have mounting holes 31 at their ends to facilitate product installation.

[0032] The above description is not intended to limit the present invention in any way. Although the present invention has been disclosed above with preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed structure and technical content to create equivalent embodiments without departing from the scope of the present invention. However, any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A high-current coaxial charging connector, comprising a plug (1) and a socket (2) for mating, characterized in that: The plug (1) includes a plug housing (3) and a column terminal assembly (5) coaxially disposed in a first central bushing (4) of the plug housing (3); the socket (2) includes a socket housing (6) and a column terminal assembly (8) coaxially disposed in a second central bushing (7) of the socket housing (6), and the upper end of the socket housing (6) is provided with a conical concave surface (9).

2. The high-current coaxial charging connector according to claim 1, characterized in that: The post-type terminal assembly (5) includes an insulating center post (11) and a first terminal group (12) integrally formed in the insulating center post (11). The first terminal group (12) includes PE line pin (13), L line pin (14), N line pin (15), CC line pin (16) and CP line pin (17) arranged in order of height and concentrically. The upper ends of the PE line pin (13), L line pin (14), N line pin (15), CC line pin (16) and CP line pin (17) are all provided with annular contact surfaces (18) exposed to the side wall of the insulating center post (11).

3. The high-current coaxial charging connector according to claim 2, characterized in that: The lower end of the insulating center post (11) is provided with a base (19), and the base (19) is provided with a PCB board (20) connected to the L line pin (14), N line pin (15), CC line pin (16) and CP line pin (17). The PCB board (20) is provided with a set of adapter terminals (21) that are connected to the L line pin (14), N line pin (15), CC line pin (16) and CP line pin (17).

4. The high-current coaxial charging connector according to claim 3, characterized in that: The base (19) is connected to the plug housing (3) by screws (22) at both ends.

5. The high-current coaxial charging connector according to claim 2, characterized in that: The post-type terminal assembly (8) includes an insulating post sleeve (23) and a second terminal group (24) disposed inside the insulating post sleeve (23). The second terminal group (24) includes a set of connecting pieces (25) arranged in a circular pattern and arranged at different heights. The upper end of the connecting piece (25) is provided with an elastic contact (26) that contacts the PE line pin (13), L line pin (14), N line pin (15), CC line pin (16) and CP line pin (17) respectively, and the lower end is provided with a wiring pin (27).

6. The high-current coaxial charging connector according to claim 5, characterized in that: The insulating sleeve (23) has a set of slots (28) and a cover plate (29) at the bottom. The connecting piece (25) is inserted into the slot (28) and pressed and fixed by the cover plate (29). The cover plate (29) is connected to the socket housing (6) by a screw (22).

7. The high-current coaxial charging connector according to claim 1, characterized in that: The side wall and bottom of the plug housing (3) and the bottom of the socket housing (6) are provided with sealing rings (30).

8. The high-current coaxial charging connector according to claim 1, characterized in that: Both the plug housing (3) and the socket housing (6) have mounting holes (31) at their ends.

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