Connector for single extension charging cord

Abstract

The utility model discloses a connector for single telescopic charging wire, which comprises at least two metal conductive rings, at least two metal conductive springs, the metal conductive spring has a center terminal and an edge arc spring, the end of the edge arc spring is in elastic contact with the inner wall of the metal conductive ring, a fixed ring, the fixed ring is an insulator, the fixed ring is provided with at least two wire holes, the wire holes are arranged at intervals and correspond to the metal conductive ring, a fixed column, the fixed column is an insulator, the fixed column is arranged in the metal conductive ring, the center terminal is exposed on the surface of the fixed column, the fixed column and the fixed ring can rotate relative to each other, the fixed ring is a relative joint of two semicircular rings, and the two semicircular rings are fixedly connected through a fixed ring sleeve after being relatively jointed. The utility model has simpler structure, lower cost, less heat generation, smaller connector volume, smaller single telescopic charging wire device volume, more material cost saving, longer length of the telescopic charging wire that can be set, and the same volume.

Description

Technical Field

[0001] This utility model relates to the field of charging cable technology, and in particular to a connection mechanism or device for a single-pull telescopic charging cable. Background Technology

[0002] Existing connection mechanisms or devices for single-pull retractable charging cables typically place the conductive copper ring for connection in the middle and the terminals for connection on the outer edge of the copper ring. This arrangement often results in a large overall size of the connection device, leading to wasted material costs. Furthermore, the length of the retractable cable within the same volume is limited, resulting in a shorter cable. Moreover, because the copper ring is in the middle, individual wires need to be connected to each copper ring individually or conductive pins need to be made, which is very cumbersome. Additionally, the conductive terminals on the outer edge of the copper ring require separate soldering to a circuit board for fixation, and the conductive terminals must be pressed tightly against the inner copper ring for secure installation. This structure is complex and costly. Furthermore, the circuit board connections are prone to overheating, causing the entire single-pull retractable charging cable device to overheat. The need to solder the charging wires to the circuit board beforehand also increases costs. Summary of the Invention

[0003] The purpose of this invention is to provide a connector for a single-pull retractable charging cable to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is: a connector for a single-pull retractable charging cable, comprising: At least two metal conductive rings are arranged at an interval between the upper and lower parts; At least two metal conductive springs, each metal conductive spring having a central terminal and an edge arc-shaped spring, the central terminals being spaced laterally apart, the edge arc-shaped springs being spaced vertically apart, the number of metal conductive springs being the same as the number of metal conductive rings and correspondingly arranged, the ends of the edge arc-shaped springs being in elastic contact with the inner wall of the metal conductive rings; A fixing ring, wherein the fixing ring is an insulator, and the inner wall of the fixing ring is provided with annular fixing grooves that are spaced apart and adapted to the metal conductive ring, the metal conductive ring is fixed in the annular fixing grooves, and the fixing ring is provided with at least two wiring holes that are spaced apart and correspond to the metal conductive ring; A fixed post, which is an insulator, is located inside the metal conductive ring. The fixed post has metal conductive spring slots on its interior and sidewalls. The metal conductive springs are located in the metal conductive spring slots, and the center terminal is exposed on the surface of the fixed post. The fixed post and the inner wall of the fixed ring are in clearance fit. The fixed post and the fixed ring can rotate relative to each other. The surface of the fixed post is provided with a fixing hole or a fixed post.

[0005] Preferably, the metal conductive spring includes a first metal conductive spring and a second metal conductive spring arranged symmetrically.

[0006] Preferably, the fixing ring consists of two opposing semicircular rings, which are fixedly connected by a fixing ring after being joined together.

[0007] Preferably, the fixing ring is provided with an opening and closing docking end.

[0008] Preferably, the opening and closing docking end is provided with docking posts and docking holes.

[0009] Preferably, the retaining ring has an opening corresponding to the wiring hole.

[0010] Preferably, the fixing post is an integral piece formed by injection molding together with the metal conductive spring sheet.

[0011] Preferably, the fixing post consists of two opposing left and right halves, which clamp the metal conductive spring sheet. The left and right halves are fixedly connected by ultrasonic technology, adhesive, or fixing sleeve.

[0012] Compared with existing technologies, the advantages of this invention are as follows: Since the conductive copper ring for connection is located on the outer edge and the connection terminal is located in the middle of the copper ring, there is no need to separately solder the conductive terminal to the circuit board for fixation on the outer edge of the copper ring, nor is it necessary to press the conductive terminal against the inner copper ring for fixation. Instead, the charging cable wires are directly soldered to the metal conductive ring (copper ring) inside the wiring hole, eliminating the need for prior soldering of the circuit board. This structure is simpler and less costly. Furthermore, because the circuit board connection is eliminated, heat generation is reduced, thus the entire single-pull retractable charging cable device is less prone to overheating. Since the metal conductive ring (copper ring) is located outside the metal conductive spring (conductive terminal), there is no need to individually connect wires or create conductive pins from each copper ring; the metal conductive spring itself has pins, which is very convenient. This design makes the entire connector smaller, resulting in a smaller overall single-pull retractable charging cable device and saving material costs. Simultaneously, within the same volume, the length of the retractable charging cable can be increased, allowing for a longer retractable cable. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0014] Figure 2 This is a three-dimensional structural diagram of the present invention with a fixing ring.

[0015] Figure 3 This is an exploded view of the structure of this utility model.

[0016] Figure 4 This is an exploded view of the structure of the fixed column of this utility model.

[0017] Figure 5 This is an exploded view of the structure of the fixing ring of this utility model.

[0018] Figure 6 This is a three-dimensional structural diagram of the metal conductive spring sheet of this utility model.

[0019] Figure 7 This is a three-dimensional structural diagram of the metal conductive ring of this utility model.

[0020] Figure 8 This is a three-dimensional structural diagram of the combination of the metal conductive spring and the metal conductive ring of this utility model.

[0021] Figure 9 This is a three-dimensional structural diagram of the fixing ring of this utility model. Detailed Implementation

[0022] The present invention will now be described in detail, clearly, and completely with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0023] Reference Figures 1-9 This utility model discloses a connector for a single-pull retractable charging cable, comprising: At least two metal conductive rings 1, with five metal conductive rings shown in the figure as an example. The metal conductive rings 1 are usually copper rings. The metal conductive rings 1 are arranged at intervals to ensure the insulation between each charging wire circuit. At least two metal conductive springs 2, with five metal conductive springs shown in the figure as an example. The metal conductive springs 2 are usually copper springs. Each metal conductive spring 2 has a center terminal 21 and an edge arc-shaped spring 22. The center terminals 21 are arranged laterally at intervals, and the edge arc-shaped springs 22 are arranged vertically at intervals to ensure the insulation between each charging wire circuit. The number of metal conductive springs 2 is the same as the number of metal conductive rings 1 and they are arranged accordingly. The end of the edge arc-shaped spring 22 is in elastic contact with the inner wall of the metal conductive ring 1 to ensure circuit continuity. A fixing ring 3 is an insulator. The inner wall of the fixing ring 3 is provided with annular fixing grooves 31 that are spaced apart and adapted to the metal conductive ring 1. The metal conductive ring 1 is fixed in the annular fixing grooves 31. The fixing ring 3 is provided with at least two wiring holes 32. The figure shows five wiring holes as an example. The wiring holes 32 are spaced apart and correspond to the metal conductive ring 1. The stretchable end of the charging wire is electrically connected to the metal conductive ring 1 by soldering through the wiring holes 32. A fixing post 4 is an insulator and is located inside the metal conductive ring 1. The fixing post 4 has metal conductive spring slots 41 inside and on its sidewalls. The metal conductive spring 2 is located in the metal conductive spring slots 41, and the center terminal 21 is exposed outside the surface 42 of the fixing post 4. The non-stretchable end of the charging wire is electrically connected to the center terminal 21 by solder. The fixing post 4 and the inner wall of the fixing ring 3 are in clearance fit, and the fixing post 4 and the fixing ring 3 can rotate relative to each other. The surface 42 of the fixing post 4 has fixing holes 43 or fixing posts, which are used to snap-fit ​​the outer shell of the single-pull telescopic charging cable to fix the fixing post 4 so that the fixing post 4 cannot rotate.

[0024] In a preferred embodiment, the metal conductive spring 2 includes a symmetrically arranged metal conductive spring 23 and a metal conductive spring 24. The symmetrical arrangement ensures that the metal conductive spring as a whole has a relatively balanced contact tension with the surrounding metal conductive ring 1, thus guaranteeing the balanced stability of electrical connection and conductivity.

[0025] In a preferred embodiment, the fixing ring 3 consists of two opposing semicircular rings. The two semicircular rings are fixedly connected by a fixing ring sleeve 33 after being joined together. The fixing ring sleeve 33 can be fixedly connected to the turntable inside the single-pull telescopic charging cable housing. The fixing ring 3 can rotate together with the turntable.

[0026] In a preferred embodiment, the fixing ring 3 is provided with an opening and closing docking end 34. The opening and closing docking end 34 is provided with a docking post 341 and a docking hole 342. The fixing ring sleeve 33 has an opening 35 corresponding to the wiring hole 32 for connecting to the stretchable end of a single-pull telescopic charging cable.

[0027] In a preferred embodiment, the fixing column 4 can be integrally injection molded together with the metal conductive spring sheet 2 through an injection molding process to make the structure more stable.

[0028] In a preferred embodiment, the fixing post 4 can be two opposing halves, which clamp the metal conductive spring 2. The two halves are fixedly connected by ultrasonic process, adhesive method, or fixing sleeve.

[0029] Finally, it should be noted that the above content is only used to illustrate the technical solution of this utility model, and is not intended to limit the scope of protection of this utility model. Simple modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model do not depart from the essence and scope of the technical solution of this utility model.

Claims

1. A connector for a single-pull retractable charging cable, characterized in that... include: At least two metal conductive rings (1) are arranged at intervals between each other. At least two metal conductive springs (2), each metal conductive spring (2) having a central terminal (21) and an edge arc-shaped spring (22), the central terminals (21) being arranged laterally at intervals, the edge arc-shaped springs (22) being arranged vertically at intervals, the number of metal conductive springs (2) being the same as the number of metal conductive rings (1) and being arranged accordingly, the end of the edge arc-shaped spring (22) being in elastic contact with the inner wall of the metal conductive ring (1); A fixing ring (3) is an insulator. The inner wall of the fixing ring (3) is provided with annular fixing grooves (31) that are spaced apart and adapted to the metal conductive ring (1). The metal conductive ring (1) is fixed in the annular fixing grooves (31). The fixing ring (3) is provided with at least two wiring holes (32). The wiring holes (32) are spaced apart and correspond to the metal conductive ring (1). A fixed post (4) is an insulator. The fixed post (4) is located inside the metal conductive ring (1). The interior and side wall of the fixed post (4) are provided with metal conductive spring slots (41). The metal conductive spring (2) is located in the metal conductive spring slots (41), and the center terminal (21) is exposed on the surface (42) of the fixed post (4). The fixed post (4) and the inner wall of the fixed ring (3) are in clearance fit. The fixed post (4) and the fixed ring (3) can rotate relative to each other. The surface (42) of the fixed post (4) is provided with a fixing hole (43) or a fixed post.

2. A connector for a single-pull retractable charging cable according to claim 1, characterized in that: The metal conductive spring (2) includes a first metal conductive spring (23) and a second metal conductive spring (24) arranged symmetrically.

3. A connector for a single-pull retractable charging cable according to claim 1, characterized in that: The fixing ring (3) consists of two semicircular rings that are connected to each other. The two semicircular rings are fixedly connected by a fixing ring sleeve (33) after they are connected to each other.

4. A connector for a single-pull retractable charging cable according to claim 1, characterized in that: The fixed ring (3) is provided with an opening and closing docking end (34).

5. A connector for a single-pull retractable charging cable according to claim 4, characterized in that: The opening and closing docking end (34) is provided with docking post (341) and docking hole (342).

6. A connector for a single-pull retractable charging cable according to claim 3, characterized in that: The fixing ring (33) has an opening (35) corresponding to the wiring hole (32).

7. A connector for a single-pull retractable charging cable according to claim 1, characterized in that: The fixing column (4) is an integral part of the metal conductive spring sheet (2) formed by injection molding.

8. A connector for a single-pull retractable charging cable according to claim 1, characterized in that: The fixing post (4) consists of two opposing left and right halves, which hold the metal conductive spring sheet (2) in place. The left and right halves are fixedly connected by ultrasonic process, adhesive, or fixing sleeve.

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