Winder

Abstract

The utility model discloses a winder which comprises a base, a take-up reel, a conductive structure and a protection structure, and the conductive structure comprises a first conductive structure and a second conductive structure which are electrically connected; the first conductive structure comprises a plurality of groups of conductive assemblies, a PCB (Printed Circuit Board) and an insulating assembly, the conductive assemblies comprise two groups of first conductive assemblies and at least one group of second conductive assemblies, and two adjacent groups of second conductive assemblies or the first conductive assemblies and the second conductive assemblies are separated through the insulating assembly; the two groups of first conductive components are respectively arranged on two opposite surfaces of the PCB in a surface-mounted manner; the second conductive structure is a conductive wire, the protection structure is fixed to the take-up reel, and the conductive wire penetrates through the protection structure around the innermost layer of the take-up reel. According to the winder, the first conductive assembly is in direct contact connection with the PCB in a patch mode, friction between the conductive assembly and the PCB is reduced so as to reduce energy loss, the protection structure is arranged to prevent the conductive wire from being snapped in the using process, and the service life of the winder is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of electronic device charging technology, and in particular to a cable reel. Background Technology

[0002] With the rapid development and innovation of modern mobile devices, different mobile devices generally use their own interfaces or charging ports. In the same space, when multiple mobile devices are used, their data cables can easily get tangled together if they are not properly organized. Therefore, cable winders with multiple different interfaces have emerged, which can connect multiple mobile devices at the same time and can rewind the data cables.

[0003] The cable reel includes a conductive device comprising a conductive wire and a conductive ring. The conductive wire is used to connect to the charging device, and the conductive ring enables internal circuitry. Specifically, the conductive wire is wound around the bushing of the take-up reel, and the conductive ring is located within the internal space of the bushing. The end of the conductive wire near the take-up reel passes through the bushing and is electrically connected to the conductive ring.

[0004] On one hand, the conductive slip ring ensures stable transmission of power signals and compressed air during the 360-degree rotation of the cable reel, preventing the wires or hoses from being torn apart during rotation. The conductive slip ring solves the problem of signal and power transmission during rotation through constant-pressure contact, ensuring uninterrupted power supply during rotation and exhibiting relatively low impedance, effectively improving structural stability. However, during operation, the internal structure of the conductive slip ring comes into direct contact, generating relative friction. This friction leads to energy loss, increases equipment temperature, and may cause overheating or even damage.

[0005] On the other hand, when the conductive wire is stretched to its maximum length, if the user applies excessive force, the internal conductor at the port connection may break due to exceeding the material's tensile strength, causing power outages or equipment malfunctions. Furthermore, in terms of safety, mechanical stress can cause cracks or damage to the insulation layer of the conductive wire, leading to safety hazards such as leakage and short circuits. It can also disrupt the uniform distribution of the electric field, increasing the risk of breakdown. Concentrated tension at the joint can also cause loosening of the connection, resulting in poor contact, sparks, or localized overheating, exacerbating the risk of fire. Additionally, prolonged or instantaneous excessive tension can cause core wire displacement, reduced sheathing strength, and even permanent structural deformation, reducing the cable's flexibility and durability. Repeatedly subjected to excessive tension will accelerate fatigue wear of the wire sheath and internal materials, shortening the overall service life. Utility Model Content

[0006] The technical problem this invention aims to solve is how to improve the structure of the conductive device, enhance its safety, and extend its service life. To this end, a winding reel is provided. On the one hand, it reduces internal friction within the conductive ring structure during operation, thereby minimizing energy loss and extending the device's lifespan, while also optimizing assembly and simplifying the conductive structure. On the other hand, it buffers the tension at the interface when the conductive wire is stretched to its limit, preventing damage or even breakage of the conductive wire.

[0007] The technical solution adopted by this utility model to solve its technical problem is as follows: a wire reel, including a base, a take-up reel, a conductive structure, and a protective structure. The take-up reel includes a first receiving cavity and a second receiving cavity separated from each other. The conductive structure includes a first conductive structure and a second conductive structure electrically connected. The first conductive structure is disposed in the first receiving cavity and includes multiple sets of conductive components, a PCB board, and an insulating component. The conductive components include two sets of first conductive components and at least one set of second conductive components. Adjacent sets of second conductive components or first and second conductive components are separated by the insulating component. The two sets of first conductive components are respectively attached to opposite sides of the PCB board. The second conductive structure is a conductive wire housed in the second receiving cavity. The protective structure is disposed in the second receiving cavity and fixed to the take-up reel. The conductive wire is wound around the innermost layer of the take-up reel and passes through the protective structure.

[0008] Preferably, the first conductive component includes a first conductive ring and a second conductive ring. The first conductive ring is a circular planar ring that is directly attached to the PCB board. The second conductive ring includes a contact surface and a first pin. The contact surface is electrically connected to the first conductive ring, and the first pin extends from the contact surface and is perpendicular to the contact surface.

[0009] Preferably, the second conductive component includes a second conductive ring and a third conductive ring, the third conductive ring also including a circular planar ring and a second pin extending from the circular planar ring, the first pin and the second pin being oriented in opposite directions.

[0010] Preferably, the second pin has an L-shaped structure.

[0011] Preferably, the insulating component includes a first insulating element and a second insulating element, the first insulating element is a sheet structure, the second insulating element is a mounting bracket, the second conductive ring is connected to the first insulating element, and the third conductive ring is connected to the second insulating element.

[0012] Preferably, the second insulating member includes a supporting plane and a side surface, the supporting plane and the side surface forming a mounting groove, and the third conductive ring is disposed in the mounting groove.

[0013] Preferably, the protective structure has a hollow structure, and the conductive wire passes through the hollow structure and is interference-fitted with the protective structure.

[0014] Preferably, the protective structure is a sheet-like structure, with both ends of the sheet-like structure fixed to the take-up reel, and the sheet-like structure and the take-up reel enclosing each other to form a hollow structure, through which the conductive wire passes.

[0015] Preferably, the take-up reel is provided with a fixing groove, and the protective structure is fixed to the fixing groove.

[0016] Preferably, the protective structure is an elastic structure.

[0017] The present invention offers the following advantages: Firstly, by directly connecting the first conductive component to the PCB board via a patch method, the friction between the conductive component and the PCB board is reduced during the rotation of the winding reel's bushing, thereby minimizing energy loss and extending the reel's lifespan. Secondly, the direct patch connection method reduces the connection structure between the conductive component and the PCB board, as well as the assembly steps, thus optimizing the structure and assembly method of the conductive component.

[0018] On the other hand, when the conductive wire is pulled to its maximum length, the protective structure is constrained by the take-up reel, and the conductive wire is bound by the protective structure. The tension on the conductive wire is transmitted to the protective structure, which buffers the contacting conductive wire and reduces the tension at the interface of the conductive wire to avoid damage or breakage of the conductive wire at the interface. Attached Figure Description

[0019] To more clearly illustrate the technical solution of this utility model, the present utility model will be further described below in conjunction with the accompanying drawings and embodiments. It should be understood that the following drawings only show some embodiments of this utility model and should not be considered as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort. In the drawings:

[0020] Figure 1 This is a schematic diagram of the structure of the cable reel of this utility model;

[0021] Figure 2 This is an exploded view of the first conductive structure of the reel of this utility model;

[0022] Figure 3 This is a schematic diagram of the structure of the first conductive component of this utility model;

[0023] Figure 4 This is a schematic diagram of the structure of the second conductive component of this utility model;

[0024] Figure 5 This is a schematic diagram of the structure of the first insulating component of this utility model;

[0025] Figure 6 This is a schematic diagram of the structure of the second insulating component of this utility model;

[0026] Figure 7 This is a schematic diagram of the structure of the take-up reel of this utility model;

[0027] Figure 8 This is a schematic diagram of the protective structure of this utility model;

[0028] Figure 9 yes Figure 7 A cross-sectional schematic diagram of the removed portion of the structure;

[0029] Figure 10 yes Figure 7 Another structural diagram;

[0030] Figure 11 This is another schematic diagram of the protective structure. Detailed Implementation

[0031] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, the specific embodiments of this utility model are now described in detail with reference to the accompanying drawings. In the following description, it should be understood that the orientations or positional relationships indicated by terms such as "upper," "lower," "vertical," "horizontal," "top," "bottom," "inner," and "outer" are based on the orientations or positional relationships shown in the accompanying drawings, and are constructed and operated in a specific orientation. They are only for the convenience of describing this technical solution and do not indicate that the device or component referred to must have a specific orientation; therefore, they should not be construed as limitations on this utility model.

[0032] It should also be noted that, unless otherwise explicitly specified and limited, terms such as "installation," "connection," "joining," "fixing," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. When an component is referred to as being "on" or "below" another component, the component can be located "directly" or "indirectly" on the other component, or there may be one or more intermediary components. The terms "first," "second," etc., are only for the convenience of describing this technical solution and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0033] Example 1:

[0034] Please see Figures 1-2 This embodiment provides a cable reel 100, including a base 10, a take-up reel 20, a conductive structure 30, and a protective structure 40. The base 10 includes a first bushing 11, and the take-up reel 20 is sleeved in the first bushing 11. The take-up reel 20 includes a first receiving cavity 201 and a second receiving cavity 202 that are separated from each other. The conductive structure 30 includes a first conductive structure 30A and a second conductive structure 30B that are electrically connected. The first conductive structure 30A is disposed in the first receiving cavity 201, and the second conductive structure 30B is disposed in the second receiving cavity 202. The first conductive structure 30A includes multiple sets of conductive components 31, a PCB board 32, and an insulating component 33. Each conductive component 31 includes two sets of first conductive components 31A and at least one set of second conductive components 31B. Adjacent sets of second conductive components 31B or first conductive components 31A and second conductive components 31B are separated by the insulating component 33. The two sets of first conductive components are respectively mounted on opposite sides of the PCB board. The second conductive structure 30B is a conductive wire wound around the second receiving cavity 202. The protective structure 40 is disposed in the second receiving cavity 202 and fixed to the take-up reel 20. The conductive wire passes through the protective structure in the innermost layer of the second receiving cavity 202.

[0035] The first conductive structure 30A is used to connect the data lines of the power supply equipment and the powered equipment. Specifically, the first conductive structure 30A includes several sets of conductive components 31, a PCB board 32, and insulating components 33. Each set of conductive components is an independent conductive path, and multiple sets of conductive components 31 can simultaneously achieve independent connection and power supply to the data lines of multiple powered devices. The PCB board 32 arranges corresponding circuits or chips as needed and is connected to each set of conductive components 31. The insulating components 33 are used to isolate the electrical influence between adjacent sets of conductive components 31, playing an insulating role and ensuring the stability of the independent operation of each set of conductive components 31.

[0036] The first bushing 11 is used to install the take-up reel 20 and the first conductive structure 30A, and can limit the radial movement of the take-up reel 20 and the first conductive structure 30A on the shaft of the first bushing 11, thereby ensuring the coaxiality of the rotation of the take-up reel 20 and the first conductive structure 30A.

[0037] The first conductive structure 30A is provided with a mounting base 34. The conductive component 31, PCB board 32, and insulating component 33 are sequentially fitted into the bushing of the mounting base 34. When the mounting base 34 rotates via a drive mechanism, it drives the PCB board 32 and the conductive component 31 to rotate coaxially. During rotation, the relative rotation of the conductive component 31 and the internal structure of the PCB board 32 generates friction. To reduce this effect, the first conductive component 31A in the first conductive structure 30A that contacts the PCB board 32 is designed as a smooth planar structure without pins or leads. It is directly surface-mounted on both ends of the PCB board 32. By surface-mounting the first conductive component 31A to the PCB board 32, friction caused by unevenness and gaps between the contact surfaces of the first conductive component 31A and the PCB board 32 can be reduced, thereby reducing energy loss and damage to the PCB board 32 and extending the service life of the coil reel.

[0038] Meanwhile, by directly connecting via surface mount technology (SMT), the first conductive component 31A is directly electrically connected to the PCB board 32, reducing the need for connection structures between the conductive component 31 and the PCB board 32, such as pins, leads, or terminals. This shortens the electrical path, reduces attenuation and interference during signal transmission, and indirectly reduces friction. Furthermore, the surface mount method simplifies the structure of the first conductive structure 30A, streamlines the assembly process between the PCB board 32 and the conductive component 31, and optimizes the structure and assembly method of the conductive component 31.

[0039] In addition, in this utility model, the second conductive component 31B is partially inserted into the PCB board 32, and the inserted part forms a gap with the insulating component 33. Through the gap, the contact area between the second conductive component 31B and the insulating component 33 is reduced, which further reduces the friction between the internal structures of the conductive component 31. At the same time, it can prevent the possibility of direct contact between adjacent conductive components 31 due to wear or damage to the insulating component 33, and prevent accidental short circuits.

[0040] It is understandable that the connection part of the first conductive component 31A to the PCB board 32 can be fixed by welding or conductive adhesive, so that the connection part between the PCB board 32 and the first conductive component 31A is relatively stable and does not rotate relative to each other, thereby reducing friction and wear on the PCB board 32.

[0041] The conductive component 31 achieves circuit conduction through two conductive rings that are in contact with each other. That is, one conductive ring is connected to the cable of the power supply equipment, and the other conductive ring is connected to the data line connector of the powered equipment. In this way, when several sets of conductive components 31 are set at the same time, each set of conductive components 31 can be independently connected to different powered equipment.

[0042] Specifically, such as Figure 3 As shown, the first conductive component 31A includes a smooth first conductive ring 311 and a second conductive ring 312. The first conductive ring 311 is a sheet-like structure of a circular planar ring. One side of the first conductive ring 311 is directly attached to the PCB board 32. The second conductive ring 312 includes a contact surface 3121 and a first pin 3122. The contact surface 3121 contacts the other side of the first conductive ring 311 to achieve electrical connection. The first pin 3122 extends from the contact surface 3121 and is perpendicular to the contact surface 3121.

[0043] like Figure 4 As shown, the second conductive component 31B includes a second conductive ring 312 and a third conductive ring 313. The structure of the third conductive ring 313 is similar to that of the first conductive ring 311 and the second conductive ring 312. The third conductive ring 313 also includes a circular planar ring 3131 and a second pin 3132 extending from the circular planar ring. The second pin 3132 is also perpendicular to the circular planar ring 3131.

[0044] like Figure 2As shown, the PCB board 32 includes a first PCB board 321 and a second PCB board 322. The first PCB board 321 is disposed at the top of the mounting base 34, and the second PCB board 322 is disposed at the bottom of the mounting base 34. A set of first conductive components 31A is disposed at both ends of the second PCB board 322, and a first conductive ring 311 is attached to each end surface. The first conductive component 31A at the end of the second PCB board 322 facing the first PCB board 321 is separated from the second conductive component 31B by an insulating component 33, thus isolating the transmission circuit.

[0045] Furthermore, in the first conductive component 31A, the first conductive ring 311 and the second conductive ring 312 rotate relative to each other while maintaining a conductive connection. In the second conductive component 31B, the second conductive ring 312 and the third conductive ring 313 rotate relative to each other while maintaining a conductive connection. When the reel rotates, as the mounting base 34 rotates, the second conductive ring 312 rotates, while the first conductive ring 311 and the third conductive ring 313 remain stationary, achieving relative rotation of the conductive rings in each set of conductive components 31 while maintaining close contact.

[0046] In other embodiments, when the reel rotates, the second conductive ring 312 remains stationary, while the first conductive ring 311 and the third conductive ring 313 rotate, thereby achieving relative rotation of the conductive rings in each set of conductive components 31 and maintaining close contact.

[0047] During installation, the first conductive component 31A and the second PCB board 322 are first installed. Then, the second conductive component 31B and the insulating component 33 are sequentially fitted onto the bushings of the mounting base 34 at intervals. The insulating component 33 fixes and limits the two ends of the second conductive component 31B, thereby applying pressure to the two ends of the second conductive component 31B, ensuring that the second conductive ring 312 and the third conductive ring 313 in the conductive component 31B are in close contact, and also ensuring that the insulating component 33 is in close contact with the adjacent second conductive component 31B. Since the contact surfaces of the first conductive ring 311 and the second conductive ring 312, and the second conductive ring 312 and the third conductive ring 313 in the conductive component 31 are sheet-like structures, the conduction process is surface-to-surface contact, which can improve the stability of conductive transmission during rotation, reduce current loss, avoid power outages, and relatively reduce impedance. Moreover, the close contact of the second conductive ring 312 and the third conductive ring 313 through the sheet structure also reduces structural deformation, resulting in a compact structure, reducing the size of the winding device, and reducing production costs.

[0048] As attached Figures 3-4As shown, in all conductive components 31, the first pin 3122 of the second conductive ring 312 is located on the outer side of the contact surface 3121, and the second pin 3132 of the third conductive ring 313 is located on the inner side of the circular planar ring 3131. In other words, the first pin 3122 and the second pin 3132 are arranged in opposite directions in the radial direction to avoid overlapping of the wiring arrangement of the second conductive ring 312 and the third conductive ring 313, thereby further avoiding mutual influence and interference.

[0049] In other embodiments, the first pin 3122 of the second conductive ring 312 can be disposed on the inner side of the contact surface 3121, and the second pin 3132 of the third conductive ring 313 can be disposed on the outer side of the circular planar ring 3131.

[0050] Furthermore, the orientation of the first pin 3122 and the second pin 3132 is configured as follows: the first pin 3122 is perpendicular to the contact surface 3121 and faces the first PCB board 321, and the second pin 3132 is perpendicular to the circular planar ring 3131 and faces the second PCB board 322. In other embodiments, the first pin 3122 is perpendicular to the contact surface 3121 and faces the second PCB board 322, and the second pin 3132 is perpendicular to the circular planar ring 3131 and faces the first PCB board 321.

[0051] Furthermore, the first PCB board 321 and the second PCB board 322 are provided with corresponding first pin 3122 and second pin 3132. In all conductive components 31, the second conductive ring 312 is fixed to the first PCB board 321 through the first pin 3122. In the first conductive component 31A, the first conductive ring 311 is fixed to the second PCB board 322 through a patch. In the second conductive component 31B, the third conductive ring 313 is fixed to the second PCB board 322 through the second pin 3132.

[0052] Mounting base 34 is provided with a receiving groove 341 corresponding to the first pin 3122. The receiving groove 341 further defines the second conductive ring 312 to prevent the second conductive ring 312 from becoming misaligned during rotation, thus affecting the stability of conductive transmission. The first pin 3122 extends out of the receiving groove 341 and passes through the insertion hole of the first PCB board 321. When mounting base 34 rotates, it drives all the second conductive rings 312 and the first PCB board 321 to rotate, while the first conductive ring 311, the third conductive ring 313, and the second PCB board 322 remain fixed.

[0053] As attached Figure 2 , Figures 5-6As shown, the insulating component 33 includes a first insulating element 331 and a second insulating element 332. The first insulating element 331 has a sheet-like structure with protrusions 3310 on both ends. The second conductive ring 312 has corresponding holes 3120. The second conductive rings 312 of two adjacent sets of conductive components 31 are respectively disposed at both ends of the first insulating element 331. The protrusions 3310 limit the second conductive rings 312, making the contact between the first conductive ring 311 and the second conductive ring 312 or the second conductive ring 312 and the third conductive ring 313 tighter. At the same time, this arrangement can limit the relative rotation of the two first conductive rings 311 and the second conductive ring 312 or the second conductive ring 312 and the third conductive ring 313 in the conductive component 31, preventing the conductive rings from misaligning during rotation and affecting the stability of conductive transmission.

[0054] It should be noted that the protrusion 3310 can be a circular protrusion structure, or a square or strip-shaped protrusion structure, etc.

[0055] The second insulating element 332 is a mounting bracket, including a supporting plane 3324 and a side 3326. The supporting plane 3324 and the side 3326 form a mounting groove 3321, and the third conductive ring 313 is placed flat in the mounting groove 3321.

[0056] It should be noted that in this embodiment, the first insulating member 331 and the second insulating member 332 are arranged at intervals. In the first group of adjacent conductive components 31, they are insulated by the first insulating member 331, and in the next group of adjacent conductive components 31, they are separated and insulated by the second insulating member 332.

[0057] Further details are attached. Figure 6 As shown, mounting grooves 3321 are formed on both sides of the second insulating member 332. The height of the mounting grooves 3321 can accommodate two sets of conductive components 31 separated by the first insulating member 331. Multiple second insulating members 332 are stacked to form an insulating outer surface, serving as a support structure to enhance the rigidity of the first conductive structure 30A. Adjacent second insulating members 332 can be fixed by a snap-fit ​​structure to enhance stability.

[0058] Furthermore, such as Figure 4 As shown, the second pin 3132 has an L-shaped structure, including a first right-angled side and a second right-angled side that are perpendicular to each other. The first right-angled side extends out from the circular planar ring 3131. The second insulating member 332 has a notch 3325. The first right-angled side of the second pin passes through the notch 3325 from the circular planar ring 3131. The second right-angled side is inserted into the second PCB board 322, and a gap is formed between the second right-angled side and the insulating surface formed by the superposition of the second insulating member 332.

[0059] In this embodiment, as shown in the appendix Figure 2As shown, the conductive device is equipped with six sets of conductive components 31, simultaneously enabling power supply connections to six different powered devices. Two sets are first conductive components 31A and four sets are second conductive components 31B, arranged from the second PCB board 322 towards the first PCB board 321, representing the first to sixth sets of conductive components 31. The first and second sets are first conductive components 31A, and the two sets of first conductive components 31A clamp the second PCB board 322. The third to sixth sets are second conductive components 31B. The third set of conductive components is isolated from the second set of conductive components by a first insulating member 331, and the third and fourth sets of conductive components are isolated by a second insulating member 332. The second and third sets of conductive components are housed in mounting grooves 3321 on one side of the second insulating member 332, while the fourth and fifth sets are housed in mounting grooves 3321 on the other side.

[0060] The first conductive structure also includes a fixing sleeve 35, which is disposed between the first PCB board 321 and the conductive component 31. Specifically, the fixing sleeve 35 includes a flat top and a fixing post. The flat top has holes corresponding to the first pins 3122. One side of the flat top presses against the conductive component 31, and the flat top also has insertion holes into which the first pins 3122 of all conductive components 31 are inserted. The other side of the flat top contacts the first PCB board 321. The fixing post is embedded in the bushing of the mounting base 34.

[0061] Example 2:

[0062] This embodiment is based on Embodiment 1, such as Figure 7 As shown, the take-up reel 20 has an overall I-shaped structure, including an upper end face 21, a lower end face 24, and a side wall 22 connecting the upper end face 21 and the lower end face 24. The upper end face 21, the lower end face 24, and the side wall 22 enclose a second receiving cavity 202. The connection between the side wall 22 and the upper end face 21 and the lower end face 24 is provided with a fixing groove 203. The protective structure 40 is disposed in the second receiving cavity 202, and part of the protective structure 40 is embedded and fixed in the fixing groove 203. That is, the protective structure 40 is fixed by the take-up reel 20 and the protective structure 40 is limited by the take-up reel 20.

[0063] The second conductive structure 30B is a conductive wire. The side wall 22 of the take-up reel 20 forms a bushing. The port 301 of the second conductive structure 30B is fixedly connected to the side wall 22 through the interface 23. The second conductive structure 30B is housed in the second receiving cavity 202 of the receiving space of the take-up reel 20 around the side wall 22. The protective structure 40 is located near the interface 23 between the second conductive structure 30B and the side wall 22, and the protective structure 40 is fixed to the side wall 22. The second conductive structure 30B and the protective structure 40 are in close contact. When the second conductive structure 30B is stretched to its limit, the tension on the second conductive structure 30B is buffered by the protective structure 40. The tension of the second conductive structure 30B at the interface 23 is reduced, thereby avoiding the circuit interruption or equipment failure caused by the user pulling too hard and breaking the second conductive structure 30B from the interface 23, or damaging the shielding layer or insulation layer of the second conductive structure 30B, causing safety hazards such as leakage and short circuit, as well as disrupting the uniform distribution of the electric field and increasing the risk of breakdown.

[0064] Furthermore, the upper end face 21 and / or the lower end face 24 are provided with fixing blocks (not shown in the figure). The fixing blocks are located facing the second receiving cavity 202 and protrude from the upper end face 21 or the lower end face 24. The protective structure 40 is provided with fixing holes (not shown in the figure) corresponding to the fixing blocks. The fixing blocks and fixing holes cooperate to further fix the protective structure 40 and the take-up reel 20.

[0065] Furthermore, such as Figures 8-10 As shown, the protective structure 40 includes a main body 401 and a hollow structure 402 formed by the main body 401. A portion of the main body 401 is fitted into the fixing groove 203. The second conductive structure 30B passes through the hollow structure 402, and the second conductive structure 30B is interference-fitted with the main body 401, meaning that the second conductive structure 30B is in close contact with the protective structure 40 and remains relatively stable. When the second conductive structure 30B is pulled to near its limit, the protective structure 40 is restrained by the take-up reel 20. The tension on the second conductive structure 30B is transmitted to the protective structure 40 for buffering, and the tendency of the second conductive structure 30B to be pulled is relieved or interrupted by the protective structure 40. This reduces the tension force at the interface 23 between the second conductive structure 30B and the take-up reel 20, thereby reducing damage or destruction to the second conductive structure 30B.

[0066] Specifically, the main body includes four walls: a first wall 41, a second wall 42, a third wall 43, and a fourth wall 44. The first wall 41 and the second wall 42 face each other and are housed in the second receiving cavity 202. The second wall 42 is completely housed in the fixing groove 203 within the take-up reel 20. The widths of the first and second walls 41 and 42 are the same as the width of the take-up reel 20, so the width of the hollow structure 402 is slightly smaller than the width of the second conductive structure 30B. The third wall 43 and the fourth wall 44 face each other, with their end portions secured in the fixing groove 203. The distance between the third wall 43 and the fourth wall 44 is the same as the height of the second conductive structure 30B, meaning the height of the hollow structure 402 is the same as the thickness of the second conductive structure 30B. Since the width of the second conductive structure 30B is also the same as the width of the take-up reel 20. When the second conductive structure 30B passes through the hollow structure 402 formed by the first wall 41, the second wall 42, the third wall 43, and the fourth wall 44, it is in an interference fit with the main body 401. When the second conductive structure 30B is almost stretched to its limit, the second wall 42 is blocked by the fixing groove 203 as the second conductive structure 30B is pulled. The fixing groove 203 acts as a buffer for the protective structure 40, interrupting or reducing the pulling tendency of the second conductive structure 30B, so that the second conductive structure 30B from the protective structure 40 to the interface 23 is not pulled outward, thereby reducing the tension of the second conductive structure 30B at the interface 23 and reducing damage to the second conductive structure 30B at the interface 23.

[0067] Furthermore, the height of the fixing groove 203 is consistent with the thickness of the second wall 42, so that the inner wall of the second wall 42 is flush with the side wall 22 of the take-up reel 20, so that the second conductive structure 30B can remain flat when winding in the take-up reel 20.

[0068] Furthermore, to better integrate the protective structure 40 with the take-up reel 20, the protective structure 40 has the same curvature as the take-up reel 20. Additionally, to ensure tight contact between the second conductive structure 30B and the protective structure 40, the hollow structure 402 has the same shape as the second conductive structure 30B. For example, if the second conductive structure 30B is circular, the hollow structure 402 will also be circular. If the second conductive structure 30B has protrusions or grooves, the hollow structure 402 will have corresponding arc-shaped structures to match them.

[0069] Furthermore, the protective structure 40 is an elastic structure, meaning that when the protective structure 40 is subjected to tension along with the second conductive structure 30B, it deforms to enhance the buffering effect. When the tension is removed, the protective structure 40 can return to its original shape. Specifically, the protective structure 40 can be an elastic structure made of soft material, such as a rubber band or elastic material. It can also be an elastic structure made of hard material, such as a spring.

[0070] Furthermore, the protective structure 40 possesses good material strength, exhibiting strong resistance to tension, compression, and bending caused by large tensile forces. Further, such as... Figure 3 As shown, if the protective structure 40 is made of a soft material, the second wall 42 of the protective structure 40 is provided with a through hole 403. Through the through hole 403, the internal structure of the protective structure 40 is more likely to deform when subjected to tensile force, thereby enhancing the buffering effect.

[0071] Furthermore, the protective structure 40 is close to the interface 23. Since the protective structure 40 is restricted by the fixing groove 203, the second conductive structure 30B between the protective structure 40 and the interface 23 cannot be pulled out. If the protective structure 40 is too far from the interface 23, the actual maximum length of the second conductive structure 30B pulled out will be shortened. Therefore, the protective structure 40 should be as close to the interface 23 as possible.

[0072] Example 3:

[0073] This embodiment is also based on Embodiment 1, but differs from Embodiment 2. In this embodiment, as shown in the appendix... Figure 11 As shown, in this embodiment, the protective structure 40 is a sheet-like structure. The protective structure 40 and the side wall 22 of the take-up reel 20 form a hollow structure 402. The second conductive structure 30B passes through the hollow structure 402 and is subjected to pressure from the protective structure 40 toward the take-up reel 20. The second conductive structure 30B is in close contact with the protective structure 40. Specifically, the protective structure 40 is parallel to the side wall 22 of the take-up reel 20. The top and bottom ends of the protective structure 40 are respectively engaged with the upper end surface 21 and the lower end surface 24 of the take-up reel 20. The thickness of the protective structure 40 is greater than that of the second conductive structure 30B, which squeezes the second conductive structure 30B toward the take-up reel 20, making it difficult for the second conductive structure 30B to move within the hollow structure 402.

[0074] In this embodiment, the surface of the protective structure 40 facing the take-up reel 20 has a higher roughness. When the second conductive structure 30B is subjected to tension, friction is generated between the protective structure 40 and the second conductive structure 30B, thereby transmitting the tension of the second conductive structure 30B to the protective structure 40. The protective structure 40 extends the duration of the force by undergoing elastic deformation, thereby buffering and offsetting the tension on the second conductive structure 30B, and reducing the possibility of the second conductive structure 30B breaking or being damaged due to a large instantaneous tension.

[0075] Furthermore, the protective structure 40 may be provided with microstructures or protrusions to increase roughness and increase the friction between the protective structure 40 and the second conductive structure 30B.

[0076] In this embodiment, it is also possible to fix the second conductive structure 30B to the protective structure 40, such as by adhesive bonding, so that the second conductive structure 30B and the protective structure 40 remain fixed. Alternatively, the protective structure 40 facing the take-up reel 20 can be fixed by providing corresponding grooves and protrusions, so that when the second conductive structure 30B is subjected to tension at the protective structure 40, the second conductive structure 30B is bound and fixed by the protective structure 40, and the tension on the second conductive structure 30B is transmitted to the protective structure 40, thereby reducing the tension of the second conductive structure 30B at the interface 23.

[0077] It should be noted that the curvature of the protective structure 40 is consistent with that of the side wall of the take-up reel 20. The hollow structure enclosed by the protective structure 40 and the take-up reel 20 can be rectangular or curved.

[0078] It is understood that the above embodiments only illustrate preferred embodiments of the present utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present utility model patent. It should be noted that for those skilled in the art, the above technical features can be freely combined, and several modifications and improvements can be made without departing from the concept of the present utility model, all of which fall within the protection scope of the present utility model. Therefore, all equivalent transformations and modifications made within the scope of the claims of the present utility model should fall within the coverage of the claims of the present utility model.

Claims

1. A cord reel, characterized by The application relates to a winding device, which comprises a base, a winding disc, a conductive structure and a protective structure, wherein the winding disc comprises a first accommodating cavity and a second accommodating cavity which are separated from each other, the conductive structure comprises a first conductive structure and a second conductive structure which are electrically connected, the first conductive structure is arranged in the first accommodating cavity, the first conductive structure comprises a plurality of groups of conductive components, a PCB board and an insulating component, the conductive components comprise two groups of first conductive components and at least one group of second conductive components, two groups of the second conductive components or the first conductive components and the second conductive components are separated from each other through the insulating component, and two groups of the first conductive components are patch-type arranged on opposite two surfaces of the PCB board, the second conductive structure is a conductive wire which is accommodated in the second accommodating cavity, the protective structure is arranged in the second accommodating cavity and is fixed with the winding disc, and the conductive wire which is wound on the innermost layer of the winding disc passes through the protective structure.

2. A cord reel according to claim 1, characterized in that The first conductive component comprises a first conductive ring and a second conductive ring, the first conductive ring is a circular plane ring and is directly patch-type arranged on the PCB board, the second conductive ring comprises a contact surface and a first pin, the contact surface is electrically connected with the first conductive ring, and the first pin extends from the contact surface and is perpendicular to the contact surface.

3. A cord reel according to claim 2, characterized in that The second conductive component comprises a second conductive ring and a third conductive ring, the third conductive ring also comprises a circular plane ring and a second pin which extends from the circular plane ring, and the first pin and the second pin are oppositely directed.

4. The cord reel according to claim 3, wherein The second pin is in an L-shaped structure.

5. The cord reel according to claim 3, wherein The insulating component comprises a first insulating piece and a second insulating piece, the first insulating piece is in a sheet structure, the second insulating piece is a mounting bracket, the second conductive ring is connected with the first insulating piece, and the third conductive ring is connected with the second insulating piece.

6. The cord reel according to claim 5, wherein The second insulating piece comprises a supporting plane and a side surface, the supporting plane and the side surface form a mounting groove, and the third conductive ring is arranged in the mounting groove.

7. The cord reel according to claim 1, wherein The protective structure is provided with a hollow structure, the conductive wire passes through the hollow structure and is in interference fit with the protective structure.

8. The cord reel according to claim 1, wherein The protective structure is in a sheet structure, two ends of the sheet structure are fixed with the winding disc, the sheet structure and the winding disc form a hollow structure, and the conductive wire passes through the hollow structure.

9. A cord reel according to any one of claims 7 or 8, characterized in that The winding disc is provided with a fixing groove, and the protective structure is fixed in the fixing groove.

10. The cord reel according to claim 9, characterized in that The protective structure is in an elastic structure.

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