A charging socket fixing structure of a direct current high-power charging socket

Abstract

The utility model discloses a charging socket jack fixed structure of direct current high -power charging socket, is equipped with the jack terminal installation cavity in its front insulator subassembly, the jack cable subassembly is connected gradually by jack terminal, switching copper bar and cable, the front end of jack terminal is limited and inserts in the jack terminal installation cavity, the jack terminal is two, and the switching copper bar is connected to each jack terminal up and down with a, to form two core four outgoing line structure, the back insulator is buckled with the front insulator subassembly, and the back insulator tail portion is equipped with the support plane, and the tail end face of jack terminal is in abutment with the support plane, to restrict the axial movement of jack terminal to the pull -out surface, the utility model discloses setting up the support plane and rectangular recess on the back insulator, directly with the rear end of jack terminal and the switching copper bar plane cooperation up and down, has realized to the axial position of jack cable subassembly and radial rotation stop, has cancelled the traditional baffle and ring structure, and the structure is more simple, and the assembly is more convenient.

Description

Technical Field

[0001] This utility model relates to the field of electric vehicle charging equipment technology, specifically, it is a charging socket fixing structure for a DC high-power charging socket. Background Technology

[0002] With the rapid development of the new energy industry, the application scenarios of electric vehicles are constantly expanding, and the power requirements for charging equipment are also increasing. Traditional new energy vehicle charging sockets usually adopt a two-core, two-outlet wiring method with a rated current limit of 250A, which can no longer meet the needs of high-power charging equipment for heavy trucks, buses, logistics vehicles, etc.

[0003] To meet the technical requirements of high-power charging equipment, a two-core, four-outlet charging socket structure was designed, with a maximum current carrying capacity of over 600A. However, the traditional two-core, two-outlet charging socket has a small tail structure and the terminal fixing structures, such as stop structures and retaining ring structures, are easy to arrange. In contrast, the two-core, four-outlet high-power charging socket includes an adapter copper busbar. Due to the structural design characteristics, it requires a larger internal cavity space to ensure assembly feasibility. Continuing to use conventional fixing structures is prone to interference and makes it difficult to achieve reliable terminal positioning and fixation. Utility Model Content

[0004] The purpose of this utility model is to provide a charging socket fixing structure for a DC high-power charging socket, so as to solve the problem that in the existing technology, due to the structural space limitation, the traditional fixing method of the two-core four-outlet high-power charging socket is difficult to reliably fix the socket cable assembly, and is prone to rotation and pin retraction.

[0005] The present invention solves the above problems through the following technical solution:

[0006] A charging socket fixing structure for a high-power DC charging socket includes a front insulator assembly, a socket cable assembly, and a rear insulator. The front insulator assembly has a socket terminal mounting cavity. The socket cable assembly is composed of socket terminals, adapter copper busbars, and cables connected in sequence. The front end of the socket terminal is inserted into the socket terminal mounting cavity to restrict the axial movement of the socket terminal towards the insertion surface. There are two socket terminals, and each socket terminal is connected to an adapter copper busbar at the top and bottom to form a two-core four-outlet structure. The rear insulator is interlocked with the front insulator assembly. The rear insulator has a supporting plane at its tail. The upper and lower sides of the supporting plane extend forward to form rectangular grooves. The connected socket terminals and adapter copper busbars are embedded in the rectangular grooves to prevent rotation. The tail end face of the socket terminal abuts against the supporting plane to restrict the axial movement of the socket terminal towards the pull-out surface.

[0007] As a further improvement of this utility model, the rear end of the socket terminal is a flat structure and is provided with screw mounting holes; the adapter copper busbar is a flat structure with screw mounting holes. The connection between the socket terminal and the adapter copper busbar is achieved by passing one end of the screw through the screw mounting holes on the socket terminal and the adapter copper busbar located on both sides of the socket terminal and engaging with the nut.

[0008] As a further improvement of this utility model, the front end of the socket terminal is provided with a plurality of limiting protrusions in the outer circumference. The limiting protrusions cooperate with the structure inside the socket terminal mounting cavity to restrict the rotation of the socket terminal and its axial movement toward the insertion surface.

[0009] As a further improvement of this utility model, a sealing ring groove for accommodating the socket sealing ring is formed in the middle of the socket terminal, and a rib is provided on the rear side of the sealing ring groove to prevent the socket sealing ring from falling off towards the pull-out surface.

[0010] As a further improvement of this utility model, the tail of the rear insulator is a structure divided into two parts.

[0011] As a further improvement of this utility model, reinforcing ribs are provided on both sides of the mating point between the rear insulator and the transition copper busbar to reduce the mating gap and increase the structural strength.

[0012] As a further improvement of this utility model, the outlet of the rear insulator is provided with a sealing body and a tail cover. The sealing body is located inside the rear insulator, and the tail cover is closed on the rear insulator. The cable passes through the sealing body and the tail cover, and is sealed by the sealing body.

[0013] As a further improvement of this utility model, the socket terminal, adapter copper busbar, sealing body and tail cover are mirror images of the same parts.

[0014] As a further improvement of this utility model, the rear insulator is also fixedly connected to the front insulator assembly by bolts.

[0015] As a further improvement of this utility model, the adapter copper busbar and the cable are ultrasonically welded.

[0016] Compared with the prior art, this utility model has the following advantages and beneficial effects:

[0017] (1) By setting a support plane and a rectangular groove on the rear insulator, this utility model can directly cooperate with the rear end of the socket terminal and the upper and lower transition copper busbar planes, thereby realizing the axial positioning and radial anti-rotation of the socket cable assembly, eliminating the traditional stop block and retaining ring structure, making the structure simpler and the assembly more convenient.

[0018] (2) The rear insulator of this utility model has a two-part structure and a wire outlet filling design, which effectively separates the cables, avoids direct contact between the outer rubber of the cables, ensures the centering of the terminals, and improves the stability of the electrical connection.

[0019] (3) The present invention adds a reinforcing rib at the joint between the rear insulator and the connecting copper busbar, which reduces the joint gap, enhances the structural strength, and provides additional limiting function.

[0020] (4) This utility model is applicable to high-power charging sockets with two cores and four outputs, which solves the problems of assembly interference and unreliable fixing caused by structural space limitations, meets the high current carrying requirements, and improves the safety and service life of charging equipment. Attached Figure Description

[0021] Figure 1 This is an exploded view of the charging socket fixing structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the structure of the socket cable assembly of this utility model;

[0023] Figure 3 This is a schematic diagram showing the fit between the pre-insulation assembly and the socket terminal of this utility model;

[0024] Figure 4 This is a schematic diagram of the structure of the socket terminal of this utility model;

[0025] Figure 5 This is a schematic diagram of the charging socket fixing structure of this utility model;

[0026] Figure 6 This is a schematic diagram showing the fit between the rear insulator and the plug cable assembly of this utility model;

[0027] Figure 7 This is a schematic diagram of the rectangular groove structure of this utility model;

[0028] Figure 8 This is a schematic diagram showing the connection between the rear insulator and the adapter copper busbar of the plug cable assembly of this utility model.

[0029] Reference numerals: 1. Front insulator assembly; 2. Socket terminal; 21. Screw mounting hole; 22. Limiting protrusion; 23. Sealing ring groove; 24. Rib; 3. Adapter copper busbar; 4. Screw; 5. Rear insulator; 51. Rectangular groove; 52. Support plane; 53. Reinforcing rib; 6. Sealing body; 7. Tail cap; 8. Nut; 9. Socket cable assembly; 10. Socket sealing ring. Detailed Implementation

[0030] 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.

[0031] Example

[0032] See attached document Figure 1-8 A charging socket fixing structure for a DC high-power charging socket includes: a front insulator assembly 1, a socket terminal 2, an adapter copper busbar 3, a screw 4, a rear insulator 5, a sealing wire body 6, a tail cover 7, and a nut 8.

[0033] The front insulator assembly 1 has a socket terminal mounting cavity that is inserted into and restricts the rotation of the socket terminal 2. The front end of the socket terminal 2 is inserted into the socket terminal mounting cavity, and the socket terminal mounting cavity restricts the rotation of the socket terminal and its axial movement toward the insertion surface. Preferably, the front end of the socket terminal 2 is provided with a plurality of limiting protrusions 22 on its outer periphery, which are used to cooperate with the structure in the socket terminal mounting cavity to restrict the rotation of the socket terminal and its axial movement toward the insertion surface.

[0034] Two socket terminals 2 are formed to constitute a socket assembly. The rear end of the socket terminal 2 has a flat structure and a screw mounting hole 21. A sealing ring groove 23 is formed in the middle of the socket terminal 2 to accommodate the socket sealing ring 10, so as to achieve a seal between the front insulator assembly 1 and the socket terminal 2 through the socket sealing ring 10, preventing moisture from entering the connector. Furthermore, a punched protrusion 24 is formed on the rear side of the sealing ring groove 23 to prevent the socket sealing ring from falling off along the pull-out surface.

[0035] The adapter copper busbar 3 is used to connect the socket terminal 2 and the cable. It has a flat structure and screw mounting holes. The adapter copper busbar 3 can be set on the upper and lower sides of the rear end of the socket terminal 2 and connected to the socket terminal 2 by screws 4 and nuts 8. Preferably, in this embodiment, adapter copper busbars 3 are connected to the upper and lower sides of both socket terminals 2, thus forming a two-core four-outlet structure.

[0036] The rear insulator assembly is interlocked with the front insulator assembly 1 and fixed with bolts. In this embodiment, the rear insulator assembly includes a rear insulator 5, a sealing body 6 disposed within the rear insulator 5, and a tail cap 7 covering the tail end of the rear insulator 5. One end of the cable connected to the adapter copper busbar 3 passes through the sealing body 6 and the tail cap 7, and the sealing body 6 presses the connection between the tail cap and the rear insulator and the cable together internally and externally to achieve a seal. The tail cap 7 is used to fix the sealing body; the rear insulator 5 also restricts the axial movement of the socket terminal 2 towards the pull-out surface.

[0037] The rear insulator 5 has a split structure at its tail end. It has filler material at its outlet to separate the two cables and prevent the outer sheaths of the cables from directly contacting each other, which would cause the socket terminal 2 to become eccentric. Its tail end has a support plane 52 to abut and limit the rear end of the adapter copper busbar 3, thereby restricting the axial movement of the socket terminal 2 toward the pull-out surface. The rear insulator 5 and the adapter copper busbar 3 have reinforcing ribs 53 on both sides of the mating area to reduce the mating gap and increase the structural strength.

[0038] The socket cable assembly 9 is formed by assembling the socket terminal 2, the adapter copper busbar 3, the screw 4, the nut 8, and the cable. The socket terminal 2, the adapter copper busbar 3, the sealing body 6, and the tail cap 7 are mirror images of the same parts, and there are two of each of the socket terminal 2, the sealing body 6, and the tail cap 7.

[0039] This solution adopts a post-assembly method: First, the sealing body 6 and the tail cover 7 are installed into the cable in sequence; then the connecting copper busbar is ultrasonically welded to the cable; the connecting copper busbar of the welded cable is locked to the socket assembly using M6 screws, and then the rear insulator is installed; the supporting plane 52 of the rear insulator 5 cooperates with the end face of the socket terminal 2 to restrict axial backward movement, and the rectangular groove 51 cooperates with the plane of the socket terminal 2 to restrict rotation, thereby achieving reliable fixation of the socket cable assembly 9.

[0040] This invention provides a rectangular groove 51 at the rear end of the rear insulator 5, forming a supporting plane 52 within the rear insulator 5. When the plug cable assembly is inserted into the rear insulator, the end face of the axial plug terminal 2 engages with the supporting plane 52 of the rear insulator 5, restricting the movement of the plug cable assembly in the pull-out direction. The upper and lower planes of the radial transition copper busbar 3 engage with the upper and lower planes of the rectangular groove in the rear insulator 5, restricting the rotation of the plug terminal 2 and the transition copper busbar 3. The transition copper busbar 3 of the plug cable assembly 9 has reinforcing ribs 53 at the inner cavity of the rear insulator 5 to increase the strength of the housing and to limit the movement of the copper busbar. Material filling is performed at the outlet to physically separate the cables, preventing direct contact between the outer sheaths of the two wires and thus avoiding eccentricity of the plug terminal 2.

[0041] This utility model achieves dual axial and radial limiting of the plug cable assembly 9 through the special structural design of the rear insulator 5, eliminating the traditional stop and retaining ring structure, simplifying the assembly process, and improving the structural compactness and reliability. It is particularly suitable for high-power charging sockets with two cores and four outgoing wires.

[0042] Although the present invention has been described herein with reference to illustrative embodiments, the above embodiments are merely preferred embodiments of the present invention, and the implementation of the present invention is not limited to the above embodiments. It should be understood that those skilled in the art can design many other modifications and implementations, which will fall within the scope and spirit of the principles disclosed in this application.

Claims

1. A charging socket fixing structure for a high-power DC charging socket, characterized in that, Includes front insulator assembly, jack cable assembly and rear insulator; The front insulator assembly has a socket terminal mounting cavity; The jack cable assembly consists of jack terminals, adapter copper busbars, and cables connected in sequence; the front end of the jack terminal is inserted into the jack terminal mounting cavity to restrict the axial movement of the jack terminal towards the opposite plug surface; The socket terminal has two terminals, and each socket terminal is connected to a copper busbar at the top and bottom to form a two-core four-outlet structure; The rear insulator is snapped into the front insulator assembly. The rear insulator has a support plane at its tail. The upper and lower sides of the support plane extend forward to form a rectangular groove. The connected socket terminal and the adapter copper busbar are embedded in the rectangular groove to prevent rotation. The end face of the socket terminal abuts against the support plane to restrict the axial movement of the socket terminal toward the pull-out surface.

2. The charging socket fixing structure of a DC high-power charging socket according to claim 1, characterized in that, The rear end of the socket terminal has a flat structure and is provided with screw mounting holes; The adapter copper busbar has a flat structure with screw mounting holes. The connection between the socket terminal and the adapter copper busbar is achieved by passing one end of the screw through the screw mounting holes on both sides of the socket terminal and engaging with the nut.

3. The charging socket fixing structure of a DC high-power charging socket according to claim 1, characterized in that, The front end of the socket terminal is provided with several limiting protrusions on its outer periphery. The limiting protrusions cooperate with the structure inside the socket terminal mounting cavity to restrict the rotation of the socket terminal and its axial movement toward the insertion surface.

4. The charging socket fixing structure of a DC high-power charging socket according to claim 1, characterized in that, The middle part of the socket terminal has a sealing ring groove to accommodate the socket sealing ring, and a rib is provided on the rear side of the sealing ring groove to prevent the socket sealing ring from falling off towards the pull-out surface.

5. The charging socket fixing structure of a DC high-power charging socket according to claim 1, characterized in that, The tail of the rear insulator has a structure that splits into two parts.

6. The charging socket fixing structure of a DC high-power charging socket according to claim 1, characterized in that, The rear insulator and the transition copper busbar are provided with reinforcing ribs on both sides to reduce the mating gap and increase the structural strength.

7. The charging socket fixing structure of a DC high-power charging socket according to claim 1, characterized in that, The outlet at the tail end of the rear insulator is provided with a sealing body and a tail cover. The sealing body is located inside the rear insulator, and the tail cover is closed on the tail end of the rear insulator. The cable passes through the sealing body and the tail cover, and is sealed by the sealing body.

8. The charging socket fixing structure of a DC high-power charging socket according to claim 7, characterized in that, The socket terminals, adapter copper busbars, sealing wire body and tail cap are mirror images of the same parts.

9. The charging socket fixing structure of a DC high-power charging socket according to claim 1, characterized in that, The rear insulator is also fixedly connected to the front insulator assembly by bolts.

10. The charging socket fixing structure of a DC high-power charging socket according to any one of claims 1-9, characterized in that, The adapter copper busbar and the cable are ultrasonically welded.

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