A terminal interchangeable charging base

Abstract

The utility model relates to new energy automobile technical field, concretely relates to a terminal replaceable charging seat, including terminal subassembly, front shell, back shell and detachable front terminal protective sleeve, terminal subassembly sets up inside the front shell, and the front shell and back shell fixed connection, and the terminal subassembly of wire harness inside the front shell is connected with the front shell, terminal subassembly includes detachable front terminal and fixed rear terminal, detachable front terminal includes elastic terminal piece, inserts the column and the switching round table, the one side fixed connection of switching round table has a plurality of elastic terminal pieces, a plurality of elastic terminal pieces are arranged in the one side of switching round table with the center of switching round table's round center, the other side of switching round table is connected with inserts the column, and the threaded hole of setting is provided on switching round table and inserts the column, and inserts the column with fixed rear terminal inserts and is fixedly connected through bolt, and the upper of switching round table is provided with the clamping recess for cooperating the connecting of detachable front terminal protective sleeve. When terminal subassembly is worn after long time, can directly replace detachable front terminal part to reduce economic cost.

Description

Technical Field

[0001] This utility model relates to the field of new energy vehicle technology, specifically to a terminal-replaceable charging socket. Background Technology

[0002] With the rapid development of the new energy vehicle industry, charging facilities, as a core component for vehicle energy replenishment, are directly related to user experience and vehicle operation safety in terms of reliability. As a key interface connecting the charging pile and the vehicle's battery system, the charging socket's internal conductive terminals must withstand frequent plugging and unplugging operations and high-current loads, making it prone to structural failures over long-term use.

[0003] Traditional charging docks generally use an integrated terminal structure, where the conductive terminals and insulating substrate are cured into a non-removable whole through injection molding. In actual use, because the charging interface needs to undergo several or even dozens of insertion and removal operations, the terminal contact parts are subjected to mechanical friction and arc erosion over a long period of time, leading to problems such as wear of the contact surface plating and stress relaxation of the elastic element. When the terminal undergoes plastic deformation or abnormally high contact resistance, it will cause poor contact and excessive temperature rise during charging. In severe cases, it may even trigger the system's protective power-off, directly affecting the normal use of the vehicle.

[0004] In the existing technology, two methods are usually used to solve the problem of terminal wear: one is to improve wear resistance by thickening the plating or using precious metal materials, but this greatly increases the manufacturing cost and cannot avoid failure caused by material fatigue; the other is to replace the entire charging base, but the low degree of modularity leads to high maintenance costs and wastes resources by scrapping functional components.

[0005] Therefore, there is an urgent need to develop a charging dock with a detachable terminal structure to enable rapid replacement and maintenance of the terminals while ensuring electrical performance, thereby improving the life cycle and efficiency of the charging dock. Utility Model Content

[0006] Therefore, the technical problem to be solved by this utility model is to overcome the defect in the prior art that the charging dock terminals cannot be directly replaced due to long-term wear, thereby providing a charging dock with replaceable terminals.

[0007] A terminal-replaceable charging dock includes a terminal assembly, a front housing, a rear housing, and a removable front terminal protective cover;

[0008] The terminal assembly is located inside the front housing. The front and rear housings are fixedly connected and sealed. The wire harness passes through the rear housing and connects to the terminal assembly inside the front housing.

[0009] The terminal assembly includes a detachable front terminal and a fixed rear terminal, which are detachably connected.

[0010] The detachable front terminal includes a flexible terminal piece, a plug post, and a transition truncated cone. Multiple flexible terminal pieces are fixedly connected to one side of the transition truncated cone. The multiple flexible terminal pieces are evenly arranged on one side of the transition truncated cone with the center of the cone as the center. The other side of the transition truncated cone is fixedly connected to the plug post. The transition truncated cone and the plug post are provided with an integrally connected threaded through hole. The plug post is inserted into the fixed rear terminal and fixedly connected by bolts. The transition truncated cone is provided with a snap-fit ​​groove for mating with the protective sleeve of the detachable front terminal.

[0011] Furthermore, a first stress relief groove is provided at the end of one of the plurality of elastic terminal pieces away from the transition frustum.

[0012] Furthermore, a second stress relief groove is provided at one end of each of the elastic terminal pieces near the transition frustum.

[0013] Furthermore, the fixed terminal includes a plug-in cylinder and a wire harness connecting piece for connecting to the wire harness. The plug-in cylinder has a threaded hole inside. The plug-in post is plugged into the plug-in cylinder and the threaded through hole is aligned with the threaded hole and fixedly connected by bolts.

[0014] Furthermore, the plug-in cylinder has a sealing groove on the circumferential side near the detachable front terminal for placing a sealing ring.

[0015] Furthermore, a fixing groove is provided circumferentially on the side of the plug-in tube away from the detachable front terminal, and the fixing groove is engaged with the front shell.

[0016] Furthermore, the detachable front terminal protective cover includes a protective cover body and a top cover. One end of the protective cover body is fixedly connected to the top cover. The protective cover body is cylindrical, and the top cover is annular. The inner diameter of the top cover is smaller than the inner diameter of the protective cover body, and the outer diameter of the top cover is larger than the outer diameter of the protective cover body and the same as the outer diameter of the protective cylinder in the front shell.

[0017] Furthermore, the protective sleeve body is provided with multiple positioning protrusions in the circumferential direction, and the positioning protrusions are connected to the bottom surface of the top cover. The positioning protrusions are engaged with the positioning grooves provided on the protective cylinder in the front shell.

[0018] Furthermore, the inner wall of the protective sleeve body away from the top cover is provided with multiple snap-fit ​​protrusions, which engage with snap-fit ​​grooves, and grooves are provided on both sides of the snap-fit ​​protrusions.

[0019] This replaceable charging dock features a terminal assembly consisting of a detachable front terminal and a fixed rear terminal. After prolonged wear, the detachable front terminal can be replaced directly without disassembling the entire charging dock. Each detachable front terminal is independently detachable, further reducing costs. The detachable front terminal and fixed rear terminal are secured by a single bolt, allowing for quick and efficient disassembly and installation, saving significant replacement time. Furthermore, the detachable front terminal is designed as multiple elastic, sheet-like structures with gaps between them, significantly improving insertion / removal performance, heat dissipation, and resistance to dust and rain. The elastic terminal pieces are equipped with a first and second stress-relief grooves, which release stress during insertion and removal, acting as a buffer. Attached Figure Description

[0020] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the overall structure of this application;

[0022] Figure 2 This is a schematic diagram of the terminal assembly.

[0023] Figure 3 This is a schematic diagram of the detachable front terminal block.

[0024] Figure 4 This is a structural diagram of the fixed rear terminal;

[0025] Figure 5 Schematic diagram of the removable front terminal protective sleeve

[0026] Figure 6 Rear view of the removable front terminal protective cover;

[0027] Figure 7 This is a schematic diagram of the front shell structure.

[0028] Explanation of reference numerals in the attached figures:

[0029] 1-Terminal assembly; 2-Front housing; 3-Rear housing; 4-Removable front terminal protective cover;

[0030] 11-Removable front terminal; 12-Fixed rear terminal;

[0031] 111-Snap-fit ​​groove; 112-Resilient terminal piece; 113-Plug-in post; 114-Transfer frustum; 115-First stress relief groove; 116-Second stress relief groove;

[0032] 121-Plug-in sleeve; 122-Threaded hole; 123-Sealing groove; 124-Fixing groove;

[0033] 21-Protective sleeve; 211-Positioning groove;

[0034] 41-Protective cover body; 411-Positioning protrusion; 412-Groove; 413-Snap-fit ​​protrusion; 42-Top cover; 5-Sealing ring. Detailed Implementation

[0035] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0036] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0037] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0038] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0039] Please see Figures 1 to 7 A terminal-replaceable charging dock includes a terminal assembly 1, a front shell 2, a rear shell 3, and a removable front terminal protective cover 4;

[0040] Terminal assembly 1 is located inside the front shell 2. The front shell 2 and the rear shell 3 are fixedly connected and sealed. The wire harness passes through the rear shell 3 and connects to the terminal assembly 1 inside the front shell 2.

[0041] Terminal assembly 1 includes a detachable front terminal 11 and a fixed rear terminal 12, wherein the detachable front terminal 11 and the fixed rear terminal 12 are detachably connected.

[0042] The detachable front terminal 11 includes elastic terminal pieces 112, insertion posts 113, and a transition frustum 114. Multiple elastic terminal pieces 112 are fixedly connected to one side of the transition frustum 114, and these pieces are evenly arranged around the center of the frustum 114. The other side of the transition frustum 114 is fixedly connected to the insertion post 113. The transition frustum 114 and the insertion post 113 have integrally connected threaded through holes. The insertion post 113 is inserted into the fixed rear terminal 12 and fixedly connected by bolts. The transition frustum 114 has a snap-fit ​​mechanism for engaging with the detachable front terminal protective sleeve 4. The groove 111 has a first stress relief groove 115 at one end of the multiple elastic terminal pieces 112 away from the transition frustum 114, and a second stress relief groove 116 at one end of the multiple elastic terminal pieces 112 near the transition frustum 114. When the terminal in the charging gun is inserted, the force on the elastic terminal piece 112 can be released through the second stress relief groove 116 and the first stress relief groove 115. At the same time, by designing the detachable front terminal 11 as multiple sheet-like elastic terminal pieces 112, the multiple sheet-like structures with a certain gap between each other can significantly improve the insertion and removal performance, heat dissipation effect and resistance to sand and rain.

[0043] The fixed rear terminal 12 includes a plug tube 121 and a wire harness connecting piece for connecting to the wire harness. The plug tube 121 has a threaded hole 122 inside. The plug post 113 is plugged into the plug tube 121 and the threaded through hole is aligned with the threaded hole 122 and fixed and tightened by bolts. The plug tube 121 has a sealing groove 123 for placing the sealing ring 5 in the circumferential direction on the side close to the detachable front terminal 11 to ensure the overall sealing performance. The plug tube 121 has a fixing groove 124 in the circumferential direction on the side away from the detachable front terminal 11. The fixing groove 124 is snapped and fixed to the front shell 2.

[0044] Please see Figure 5 , 67. The detachable front terminal protective sleeve 4 includes a protective sleeve body 41 and a top cover 42. One end of the protective sleeve body 41 is fixedly connected to the top cover 42. The protective sleeve body 41 is cylindrical, and the top cover 42 is annular. The inner diameter of the top cover 42 is smaller than the inner diameter of the protective sleeve body 41, and the outer diameter of the top cover 42 is larger than the outer diameter of the protective sleeve body 41 and is the same as the outer diameter of the protective cylinder 21 in the front shell 2. The protective sleeve body 41 is provided with multiple positioning protrusions 411 in the circumference, and the positioning protrusions 411 are connected to the bottom surface of the top cover 42. The positioning protrusions 411 are engaged with the positioning grooves 211 provided on the protective cylinder 21 in the front shell 2. The inner wall of the protective sleeve body 41 away from the top cover 42 is provided with multiple engaging protrusions 413. The multiple engaging protrusions 413 are engaged with the engaging grooves 111. Grooves 412 are provided on both sides of the engaging protrusions 413 so that the engaging protrusions 413 can extend slightly outward when subjected to force.

[0045] When it is necessary to replace the terminal, first use a tool to unscrew the screws that fix the detachable front terminal 11 and the fixed rear terminal 12 together. Then, remove the detachable front terminal protective sleeve 4 and the detachable front terminal 11 inside it and separate the two. Then, take out the new detachable front terminal 11 and assemble the detachable front terminal 11 with the detachable front terminal protective sleeve 4. That is, the multiple snap-fit ​​protrusions 413 and snap-fit ​​grooves 111 are engaged together. Then, align the positioning protrusions 411 and the positioning grooves 211 and send the assembled detachable front terminal 11 and detachable front terminal protective sleeve 4 into the protective cylinder 21 until the rear end face of the adapter truncated cone 114 is in contact with the front end face of the plug cylinder 121. At this time, the rear end face of the top cover 42 is in close contact with the front end face of the protective cylinder 21, and the plug post 113 is fully inserted into the interior of the plug cylinder 121, with the threaded through hole aligned with the threaded hole 122. Then, fix the detachable front terminal 11 and the fixed rear terminal 12 together with bolts.

[0046] This replaceable charging dock features a terminal assembly consisting of a detachable front terminal and a fixed rear terminal. After prolonged wear, the detachable front terminal can be replaced directly without disassembling the entire charging dock. Each detachable front terminal is independently detachable, further reducing costs. The detachable front terminal and fixed rear terminal are secured by a single bolt, allowing for quick and efficient disassembly and installation, saving significant replacement time. Furthermore, the detachable front terminal is designed as multiple elastic, sheet-like structures with gaps between them, significantly improving insertion / removal performance, heat dissipation, and resistance to dust and rain. The elastic terminal pieces are equipped with a first and second stress-relief grooves, which release stress during insertion and removal, acting as a buffer.

[0047] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A terminal-replaceable charging dock, characterized in that, Includes a terminal assembly (1), a front housing (2), a rear housing (3), and a removable front terminal protective sleeve (4); The terminal assembly (1) is located inside the front shell (2). The front shell (2) and the rear shell (3) are fixedly connected and sealed. The wire harness passes through the rear shell (3) and connects to the terminal assembly 8 pieces (1) inside the front shell (2). The terminal assembly (1) includes a detachable front terminal (11) and a fixed rear terminal (12), and the detachable front terminal (11) and the fixed rear terminal (12) are detachably connected; The detachable front terminal (11) includes a flexible terminal piece (112), a plug post (113), and a transition truncated cone (114). Multiple flexible terminal pieces (112) are fixedly connected to one side of the transition truncated cone (114). The multiple flexible terminal pieces (112) are evenly arranged on one side of the transition truncated cone (114) with the center of the transition truncated cone (114) as the center. The other side of the transition truncated cone (114) is fixedly connected to the plug post (113). The transition truncated cone (114) and the plug post (113) are provided with an integrally connected threaded through hole. The plug post (113) is inserted into the fixed rear terminal (12) and fixedly connected by bolts. The transition truncated cone (114) is provided with a snap-fit ​​groove (111) for engaging with the detachable front terminal protective sleeve (4).

2. The terminal-replaceable charging dock according to claim 1, characterized in that, Each of the plurality of elastic terminal pieces (112) has a first stress relief groove (115) at the end away from the transition frustum (114).

3. A terminal-replaceable charging dock according to claim 2, characterized in that, Each of the multiple elastic terminal pieces (112) is provided with a second stress relief groove (116) at one end near the transition frustum (114).

4. A terminal-replaceable charging dock according to claim 3, characterized in that, The fixed terminal (12) includes a plug tube (121) and a wire harness connecting piece for connecting to the wire harness. The plug tube (121) has a threaded hole (122) inside. The plug post (113) is plugged into the plug tube (121) and the threaded through hole is aligned with the threaded hole (122) and fixedly connected by bolts.

5. A terminal-replaceable charging dock according to claim 4, characterized in that, The plug tube (121) has a sealing groove (123) for placing the sealing ring (5) circumferentially on the side near the detachable front terminal (11).

6. A terminal-replaceable charging dock according to claim 5, characterized in that, The plug tube (121) has a fixing groove (124) on the side away from the detachable front terminal (11) in the circumferential direction, and the fixing groove (124) is engaged with the front shell (2).

7. A terminal-replaceable charging dock according to claim 6, characterized in that, The detachable front terminal protective sleeve (4) includes a protective sleeve body (41) and a top cover (42). One end of the protective sleeve body (41) is fixedly connected to the top cover (42). The protective sleeve body (41) is cylindrical, and the top cover (42) is annular. The inner diameter of the top cover (42) is smaller than the inner diameter of the protective sleeve body (41), and the outer diameter of the top cover (42) is larger than the outer diameter of the protective sleeve body (41) and is the same as the outer diameter of the protective cylinder (21) in the front shell (2).

8. A terminal-replaceable charging dock according to claim 7, characterized in that, The protective sleeve body (41) is provided with a plurality of positioning protrusions (411) in the circumferential direction, and the positioning protrusions (411) are connected to the bottom surface of the top cover (42). The positioning protrusions (411) are engaged with the positioning grooves (211) provided on the protective cylinder (21) in the front shell (2).

9. A terminal-replaceable charging dock according to claim 8, characterized in that, The inner wall of the protective sleeve body (41) away from the top cover (42) is provided with multiple snap-fit ​​protrusions (413), which engage with the snap-fit ​​grooves (111). Grooves (412) are provided on both sides of the snap-fit ​​protrusions (413).

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