Conductive structure and stretchable wire module

Abstract

The utility model relates to a kind of conductive structure and telescopic wire module of wire rod winding technical field, including first circuit board and second circuit board, annular conductive track is provided on the first circuit board, conductive terminal is provided on the second circuit board, the conductive terminal includes insulated frame and several conductive sheets, one end of the conductive sheet is downwardly bent and forms the welding portion that with the lower end surface of the insulated frame is aligned, the other end is upwardly bent and forms the contact portion that protrudes on the upper end surface of the insulated frame.The utility model conductive sheet one end of the conductive terminal is bent and forms the welding portion that with the lower end surface of the insulated frame is aligned, this structure design makes the conductive terminal can be directly carried and welded on circuit board structure, effectively reduce the manufacturing difficulty of circuit board structure, avoid the problem that circuit board structure thickness is increased due to opening notch, so that the whole conductive structure and telescopic wire module are more light and thin.

Description

Technical Field

[0001] This utility model relates to the field of wire winding technology, specifically to a conductive structure and a telescopic wire module. Background Technology

[0002] Charging devices (such as power banks or chargers) have cables for connecting to electronic devices to charge them. These devices may include a retractable cable module for winding the cable. When charging is needed, the cable can be pulled out from the retractable module to adjust its length, making it suitable for various applications. When charging is not needed, the retractable module can retract the cable, storing it for easy portability.

[0003] For specific details regarding the prior art, please refer to the applicant's prior utility model patent application, publication number CN222896844U, which discloses a connector and a rotating power transmission device for power transmission. The connector includes an insulator and several conductive plates, with the conductive plates secured within the insulator, which is made of a high-temperature resistant material. Each conductive plate includes at least one positive electrode plate, at least one negative electrode plate, and at least one signal transmission plate, all made of metal. The advantages of this utility model are: by improving the connector, the structure is further optimized, reducing production steps, lowering production costs, and increasing the product's power transmission capacity. The rotating power transmission device uses multiple connectors, allowing for sufficient contact between the connectors and the fixed plate, improving the stability of power transmission and the product's durability.

[0004] While the aforementioned conductive structure improves conductivity to some extent, there are still areas for improvement. Existing circuit board structures for mounting connectors generally require corresponding slots to be cut into the circuit board structure for fixing and soldering the connectors. This design not only increases the difficulty of assembling and soldering the circuit board but also increases the thickness of the circuit board structure to some extent. Therefore, the conductive structure and telescopic wire module proposed in this invention optimize the above-mentioned problems. Summary of the Invention

[0005] This invention provides a conductive structure and a telescopic wire module to solve the problems mentioned in the background art.

[0006] The objective of this utility model is achieved through the following means: A conductive structure includes a first circuit board and a second circuit board. The first circuit board has an annular conductive track, and the second circuit board has at least one conductive terminal for contacting the annular conductive track. The conductive terminal includes an insulating frame and a plurality of conductive sheets. One end of each conductive sheet is bent downward to form a welding portion aligned with the lower end face of the insulating frame, and the other end is bent upward to form a contact portion protruding from the upper end face of the insulating frame.

[0007] Furthermore, the insulating frame is provided with a receiving cavity corresponding to the position of the contact portion, and the welding portion protrudes from one side of the insulating frame.

[0008] Furthermore, the top of the contact portion is provided with a protruding structure.

[0009] Furthermore, the bottom of the insulating frame is provided with positioning posts for fitting and engaging with the second circuit board.

[0010] The telescopic cable module includes a housing, cable, and conductive structure.

[0011] Furthermore, it also includes a winding spool for winding the wire, the first circuit board being mounted on the winding spool, and the second circuit board being mounted on the inner wall of the housing and disposed opposite to the first circuit board.

[0012] Furthermore, one side of the first circuit board or the second circuit board is provided with a connecting portion extending to the outside of the housing.

[0013] The conductive terminal of this invention features a conductive sheet with one end bent to form a welding portion aligned with the lower end face of the insulating frame. This structural design allows the conductive terminal to be directly mounted and soldered onto the circuit board structure, effectively reducing the manufacturing difficulty of the circuit board structure and avoiding the problem of increasing the thickness of the circuit board structure due to slotting. This results in a thinner and lighter conductive structure and telescopic wire module. Furthermore, the upward-protruding arched design of the other end of the conductive sheet ensures more stable and reliable contact between the conductive terminal and the annular conductive track, preventing a decrease in conductivity due to poor contact. Attached Figure Description

[0014] Figure 1 This is a first exploded view of a conductive structure according to the present invention; Figure 2 This is a second explosion diagram of a conductive structure according to the present invention; Figure 3 This is a cross-sectional view of the conductive structure in this embodiment. Figure 4 This is a schematic diagram of the telescopic line module of this utility model; Figure 5This is an exploded view of the telescopic wire module of this utility model; Figure 6 This is a schematic diagram of the installation of the conductive structure in this utility model; Figure 7 This is a cross-sectional view of the conductive structure in Embodiment 2. The reference numerals in the figure are as follows: 1-first circuit board, 2-second circuit board, 201-connection part, 3-outer shell, 3A-top cover, 3B-base, 3C-protective enclosure, 4-wire, 5-winding reel, 10-conductive structure, 11-ring conductive track, 12-conductive terminal, 121-insulating frame, 1211-accommodating cavity, 1212-positioning post, 122-conductive sheet, 1221-welding part, 1222-contact part, 1223-protruding structure. Detailed Implementation

[0015] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. Example

[0016] In this embodiment, refer to Figure 1 - Figure 3 The conductive structure 10 specifically implemented includes a first circuit board 1 and a second circuit board 2. The first circuit board 1 is provided with an annular conductive track 11, and the second circuit board 2 is provided with at least one conductive terminal 12 for contacting the annular conductive track 11. The conductive terminal 12 includes an insulating frame 121 and a plurality of conductive sheets 122. One end of the conductive sheet 122 is bent downward to form a welding part 1221 aligned with the lower end face of the insulating frame 121, and the other end is bent upward to form a contact part 1222 protruding from the upper end face of the insulating frame 121.

[0017] The insulating frame 121 is provided with a receiving cavity 1211 corresponding to the position of the contact portion 1222 for accommodating the downward deformation of the contact portion 1222. The receiving cavity 1211 effectively prevents interference between the contact portion 1222 and other components when deformed under force, ensuring the stability and reliability of the contact between the conductive terminal 12 and the annular conductive track 11. Furthermore, the insulating frame 121 surrounding the contact portion 1222 provides good insulation protection, preventing accidental contact between the conductive piece 122 and other unnecessary conductors, thus avoiding safety hazards such as short circuits. Simultaneously, this structural design makes the conductive terminal 12 compact, occupying little space, facilitating layout and installation within limited circuit board space. During conduction, the conductive piece 122 makes close contact with the annular conductive track 11 through its contact portion 1222, achieving stable current transmission, while the welding portion 1221 ensures a firm connection between the conductive piece 122 and the circuit board, further enhancing the stability and reliability of the conductive structure 10.

[0018] The welding portion 1221 protrudes from one side of the insulating frame 121. This design facilitates welding operations and also benefits the inspection and control of welding quality. In practical applications, the height and shape of the protruding welding portion 1221 can be adjusted according to specific needs to adapt to different welding processes and equipment requirements. Furthermore, the integrated design of the welding portion 1221 and the insulating frame 121 enhances the overall structural strength of the conductive terminal 12, reducing the risk of component loosening or damage due to external forces.

[0019] The bottom of the insulating frame 121 is provided with positioning posts 1212 for fitting into the second circuit board 2. The precise fitting of the positioning posts 1212 with the positioning holes on the second circuit board 2 effectively ensures the accurate installation position of the conductive terminals 12 on the second circuit board 2, preventing installation misalignment and thus guaranteeing the stability and reliability of the connection between the conductive terminals 12 and the second circuit board 2. This fitting method is not only easy to install but also provides a firm positioning, preventing loosening during subsequent use and further improving the stability and durability of the entire conductive structure 10 during use.

[0020] Reference Figure 4 - Figure 6 The telescopic cable module includes a housing 3, a cable 4, a winding spool 5 for winding the cable 4, and a conductive structure 10. The housing 3 is composed of an interlocking upper cover 3A and a base 3B, and the outer edges of the upper cover 3A and the base 3B are respectively provided with protective surrounds 3C.

[0021] In this embodiment, the relatively flat and durable annular conductive track 11 and the first circuit board 1 are mounted on the winding reel 5, while the second circuit board 2, with a protruding contact portion 1222, is mounted inside the upper cover 3A with a protective enclosure 3C. This reduces the risk of damage caused by component collisions during product assembly, effectively improving product assembly efficiency and finished product quality. Simultaneously, this layout makes the entire telescopic cable module more compact and rational in structure, achieving orderly installation and stable operation of components within a limited space.

[0022] The second circuit board 2 is disposed opposite to the first circuit board 1. A connecting portion 201 extending to the outside of the housing 3 is provided on one side of the second circuit board 2, and the connecting portion 201 is used to connect external circuits.

[0023] The conductive piece 122 of the conductive terminal 12 of this invention is bent at one end to form a welding portion 1221 aligned with the lower end face of the insulating frame 121. This structural design allows the conductive terminal 12 to be directly mounted and soldered onto the circuit board structure, effectively reducing the manufacturing difficulty of the circuit board structure and avoiding the problem of increasing the thickness of the circuit board structure due to slotting. This makes the entire conductive structure 10 and the telescopic wire module thinner and lighter. In addition, the upward convex arching of the other end of the conductive piece 122 makes the contact between the conductive terminal 12 and the annular conductive track 11 more stable and reliable, avoiding the problem of decreased conductivity due to poor contact.

[0024] Compared to existing technologies, this invention eliminates the need for corresponding slots in the circuit board structure to fix and solder the connector, reducing the difficulty of circuit board manufacturing and processing, reducing production steps, and thus lowering production costs. At the same time, it avoids the problem of increasing the thickness of the circuit board structure due to slots, making the entire conductive structure 10 and the telescopic cable module thinner and lighter, easier to carry and use. Example

[0025] like Figure 7 As shown, the difference between this embodiment and Embodiment 1 is that a protruding structure 1223 is provided on the top of the contact portion 1222. The protruding structure 1223 further enhances the stability when the conductive terminal 12 contacts the annular conductive track 11. When the conductive terminal 12 contacts the annular conductive track 11, the protruding structure 1223 can generate greater contact pressure, making the contact tighter and effectively reducing contact loosening caused by vibration or shaking, thereby ensuring the stability and reliability of current transmission.

[0026] In practical applications, the contact portion 1222 with the protruding structure 1223 can better adapt to different working environments and usage requirements. For example, in some applications requiring high conductivity stability, such as precision instruments and equipment, the protruding structure 1223 can ensure that the conductive terminal 12 maintains good contact with the annular conductive track 11 during long-term use, avoiding equipment failure or data transmission errors caused by poor contact. However, correspondingly, since the protruding structure 1223 is a point contact rather than a line contact as in Embodiment 1, the contact area is relatively small. Under long-term high-load conductivity, it may generate more heat due to excessive local current density, making it unsuitable for some high-power circuit scenarios.

[0027] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some changes or modifications to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes, and modifications made to the above embodiments based on the present utility model without departing from the scope of the present utility model shall fall within the scope of the present utility model.

Claims

1. A conductive structure comprising a first circuit board (1) and a second circuit board (2), wherein the first circuit board (1) is provided with an annular conductive track (11), and the second circuit board (2) is provided with at least one conductive terminal (12) for contacting the annular conductive track (11), wherein the conductive terminal (12) comprises an insulating frame (121) and a plurality of conductive sheets (122), characterized in that: One end of the conductive sheet (122) is bent downward to form a welding part (1221) aligned with the lower end face of the insulating frame (121), and the other end is bent upward to form a contact part (1222) protruding from the upper end face of the insulating frame (121).

2. The conductive structure according to claim 1, characterized in that: The insulating frame (121) is provided with a receiving cavity (1211) corresponding to the position of the contact portion (1222), and the welding portion (1221) protrudes from one side of the insulating frame (121).

3. The conductive structure according to claim 1, characterized in that: The top of the contact portion (1222) is provided with a protruding structure (1223).

4. The conductive structure according to claim 1, characterized in that: The bottom of the insulating frame (121) is provided with a positioning post (1212) for fitting and engaging with the second circuit board (2).

5. A telescopic cable module, characterized in that, It includes a housing (3), wires (4), and a conductive structure as described in any one of claims 1-4.

6. The telescopic line module according to claim 5, characterized in that, It also includes a winding spool (5) for winding the wire (4), the first circuit board (1) is mounted on the winding spool (5), and the second circuit board (2) is mounted on the inner wall of the housing (3) and is disposed opposite to the first circuit board (1).

7. The telescopic line module according to claim 5 or 6, characterized in that: One side of the first circuit board (1) or the second circuit board (2) is provided with a connecting part (201) extending to the outside of the housing (3).

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