A telescopic cord module

Abstract

The utility model relates to a kind of telescopic line modules, including shell assembly, winding assembly and circuit board assembly, winding assembly is equipped with winding reel;Winding reel can rotate relative to shell;Circuit board assembly includes first circuit board and second circuit board, and first circuit board is located on shell assembly;Second circuit board is set on the first circuit board on winding reel;Second circuit board and first circuit board slide relative to each other when rotating with winding reel;First circuit board and second circuit board are electrically connected and still maintain electrical connection during relative sliding;Winding reel shape is disc, and first accommodating groove is set in the center position of winding reel;The outer edge of first accommodating groove is equipped with buckle group corresponding to second circuit board;Buckle group includes axial limit buckle and rotation limiting buckle;Axial limit buckle and rotation limiting buckle are evenly arranged on the outer edge of first accommodating groove;Axial limit buckle is used to limit the axial movement of second circuit board;Rotation limiting buckle is used to prevent the circumferential rotation of second circuit board.

Description

Technical Field

[0001] This utility model relates to the technical field of telescopic cable modules, and in particular to a telescopic cable module. Background Technology

[0002] With the widespread use of electronic devices, retractable cable modules are widely used in various products as connection and storage devices. However, existing technologies suffer from unstable and unreliable electrical connections. The electrical connection between rotating and stationary components often suffers from poor contact due to frictional losses, resulting in poor signal transmission stability, especially during rotation. To address these issues, some retractable cable modules incorporate multi-layer conductive ring structures on the circuit board. However, this cannot eliminate the impact of axial movement and circumferential rotation of the circuit board on signal transmission during rotation, making it difficult to effectively guarantee signal transmission stability during rotation. Utility Model Content

[0003] The present invention provides a retractable cable module, comprising a housing assembly, a cable winding assembly, and a circuit board assembly, wherein the cable winding assembly and the circuit board assembly are disposed inside the housing assembly; the cable winding assembly has a cable reel; the cable reel is rotatable relative to the housing; the circuit board assembly includes a first circuit board and a second circuit board, the first circuit board being disposed on the housing assembly; the second circuit board is disposed on the cable reel corresponding to the first circuit board; the second circuit board slides relative to the cable reel as it rotates; the first circuit board and the second circuit board are electrically connected and remain electrically connected during relative sliding; the cable reel is disc-shaped, and a first receiving groove is provided on one end face of the cable reel, the first receiving groove being disposed at the center of the cable reel; a latching assembly is provided on the outer edge of the first receiving groove corresponding to the second circuit board.

[0004] Preferably, the winding reel is provided with a sliding track; the sliding track is located on the same side end face and is arranged around the first receiving groove; a swing member is correspondingly provided on the housing assembly; the swing member is provided with a first boss; the first boss moves relative to the sliding track.

[0005] Preferably, a second receiving groove is provided on the other end face of the cable reel; a data cable is provided on the second receiving groove, and a cable outlet is provided on the housing assembly. The movable end of the data cable passes through the cable outlet and is exposed on the housing assembly. The housing assembly is provided with a roller that cooperates with the data cable corresponding to the cable outlet.

[0006] Preferably, the data cable fixing end is electrically connected to the second circuit board, and the electrical connection position is filled with UV, silicone or epoxy resin for fixation. The first receiving groove is provided with a groove and a through hole corresponding to the connection position of the data cable and the second circuit board, and the through hole is located inside the groove.

[0007] Preferably, a spring contact group is fixed on the first circuit board, and the spring contact group is located near the second circuit board; one end of the spring contact group is electrically connected to the first circuit board, and the other end of the spring contact group is electrically connected to the second circuit board; a circular conductive slip ring is provided on the second circuit board corresponding to the spring contact group.

[0008] Preferably, the housing assembly includes a rear housing; a support column is provided at the center of the rear housing; and the reel is rotatably mounted on the support column.

[0009] Preferably, the sliding track includes an inner track, an outer track, a first protrusion, and a second protrusion. The inner track and the outer track are coaxially arranged, and the outer track is located outside the inner track. An annular protrusion is provided between the inner track and the outer track. The annular protrusion has a disconnected position. The first protrusion and the second protrusion are located at the disconnected position of the annular protrusion. The first protrusion and the first protrusion cooperate to stop the winding assembly.

[0010] Preferably, the first protrusion is provided with a first guide surface. The winding assembly rotates under the action of tension. When the tension stops, the first guide surface of the first protrusion cooperates with the first boss to stop the winding assembly. The first protrusion is provided with a first guide surface and a second guide surface, the second protrusion is provided with a third guide surface, and the annular boss is provided with a fourth guide surface. When tension is applied to the winding reel, the first boss begins to slide relative to the first boss, passes the third guide surface, slides past the second guide surface, and enters the outer track. When the first boss is initially in the outer track, the winding reel rotates under the action of tension. At this time, the tension is suddenly lost, the relative movement direction of the first protrusion changes, slides into the first guide surface, and stops. At this time, when tension is applied to the winding reel again, the first boss slides into the inner track under the action of the first guide surface and the fourth guide surface.

[0011] Preferably, the second circuit board is disc-shaped; the latching assembly includes an axial limiting latch and a rotation limiting latch; the axial limiting latch and the rotation limiting latch are evenly arranged on the outer edge of the first receiving groove; the axial limiting latch is used to limit the axial movement of the second circuit board; the rotation limiting latch is used to prevent the second circuit board from rotating in the circumferential direction; Preferably, the winding reel is provided with a second boss and a coil spring; the tail end of the coil spring is connected to the second boss; and the center end of the coil spring is connected to the support column.

[0012] Compared with the prior art, the telescopic cable module provided by this utility model has the following advantages: 1. By using a disc-shaped winding reel in conjunction with two circuit boards, electrical signal transmission is achieved within a limited space during the rotation of the winding assembly. The central layout of the first receiving slot makes the structure compact and reasonable, and the snap-fit ​​assembly ensures that the second circuit board will not experience axial displacement or circumferential rotation during operation. This design is particularly suitable for electronic devices that require frequent extension and retraction, effectively preventing wire tangling. The snap-fit ​​assembly design greatly enhances the stability of the electrical connection during rotation, ensuring uninterrupted signal transmission and reducing the risk of electrical failures due to poor contact.

[0013] 2. The coordinated design of the sliding rail and the swinging component makes the rotation of the telescopic cable module smoother. This structure achieves precise control of the cable reel's rotation trajectory through the precise movement of the first boss on the sliding rail. During user operation, this design effectively guides the orderly winding and unwinding of the cable, avoiding jamming or misalignment.

[0014] 3. The second receiving slot provides storage space for the data cable, which, combined with the cable outlet and roller structure, forms a cable protection system. The addition of the roller significantly reduces the frictional resistance experienced by the data cable during extension and retraction, resulting in a smoother and more natural cable exit. This design not only effectively extends the lifespan of the data cable but also prevents the cable from twisting and deforming during repeated use, thus improving the product's durability.

[0015] 4. The layout of the grooves and through holes provides protection for the connection between the data cable and the circuit board, effectively preventing fatigue fracture of the solder joints caused by bending at the connection point. By controlling the depth of the grooves and the position of the through holes, the optimal bending radius is maintained at the connection point during expansion and contraction. This structure improves the reliability of the electrical connection and significantly reduces the product failure rate caused by damage to the cable connection.

[0016] 5. The combination of the spring contact group and the circular conductive slip ring constitutes a sliding electrical connection structure. This design ensures a stable electrical connection between the first and second circuit boards during relative rotation, with minimal fluctuation in contact resistance. It is particularly suitable for applications requiring rotation and high signal stability. The multiple spring contact groups provide stability and substitutability, preventing system failure due to damage to a single spring contact group.

[0017] 6. The integrated design of the support column provides stable rotational support for the winding reel. This structure ensures that the reel maintains dynamic balance even during high-speed rotation, effectively preventing component wear caused by eccentric vibration. The design of the rear housing and support column enhances the structural strength of the entire module.

[0018] 7. The innovative design of dual tracks and protrusions enables precise limit control. The inner and outer tracks ensure the data cable does not tangle when extending or retracting, while the annular protrusion's break point creates a locking point. This structure allows the cable reel to reliably lock in a preset position, providing users with a clear sense of segment positioning during use, greatly improving the product's user experience and safety.

[0019] 8. The guide surface design of the first protrusion enables a smooth stopping experience. The guide surface design allows the first protrusion to naturally slide into the stopping position during movement, effectively reducing mechanical wear. This design allows for quick stopping when the user stops applying force, and the angle of the guide surface ensures smooth disengagement when force is applied again, resulting in a smooth process.

[0020] 9. The design of two types of latches working together to secure the circuit board prevents it from moving during rotation. The axial limiting latch effectively prevents displacement of the circuit board during vibration, while the anti-rotation latch ensures stability during rotation. The evenly distributed latch layout ensures more balanced force distribution, avoiding localized stress concentration. This design effectively guarantees the stability of electrical connections and improves product reliability under harsh conditions, even in high-speed rotating and vibrating working environments.

[0021] 10. The coil spring provides a durable and stable rewinding force. The tail end of the coil spring connects to the second boss, and the center of the coil spring connects to the support column to ensure smooth torque transmission. The support column serves as the fixed center of the coil spring, making the rebound process smoother. Using a coil spring to provide rewinding force ensures stable and undiminished power, and provides high durability. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a structural schematic diagram of a telescopic line module provided in an embodiment of this utility model.

[0024] Figure 2 This is a structural diagram of one end face of the winding reel of a telescopic cable module provided in an embodiment of this utility model.

[0025] Figure 3 This is an exploded view of the front housing of a telescopic line module provided in this embodiment of the present invention.

[0026] Figure 4This is a schematic diagram of the circuit board assembly of a telescopic cable module provided in an embodiment of the present invention.

[0027] Figure 5 This is a schematic diagram of the structure of the first receiving groove and sliding track provided in the embodiment of this utility model.

[0028] Figure 6 This is a schematic diagram of the cooperation between the first boss and the sliding track provided in an embodiment of the present utility model.

[0029] Figure 7 This is an exploded view of a telescopic wire module provided in an embodiment of this utility model.

[0030] Figure 8 This is a structural diagram of the other end face of the reel of a telescopic cable module provided in an embodiment of this utility model.

[0031] Figure 9 This is a schematic diagram showing the fit between the cable outlet and the roller provided in this embodiment of the utility model.

[0032] Figure 10 This is a schematic diagram of the first activity trajectory provided in an embodiment of the present invention.

[0033] Figure 11 This is a schematic diagram of the second activity trajectory provided in an embodiment of the present invention.

[0034] Explanation of reference numerals in the attached diagram: 100. Telescopic cable module; 1. Housing assembly; 11. Front housing; 111. Swinging component; 1111. First boss; 112. First mounting groove; 113. Second mounting groove; 114. Fixing claw; 115. Fixing through hole; 1151. Screw; 116. Edge hole; 12. Rear housing; 121. Support column; 122. Cable outlet; 123. Roller; 2. Cable winding assembly; 21. Cable winding reel; 22. Sliding rail; 221. Inner rail; 222. Annular boss; 2221. First protrusion; 2222. First guide surface; 2223. Second guide surface; 2224. Second protrusion; 2225. Third guide surface; 2226. Fourth guide surface; 223. Outer rail; 23. First receiving groove; 231. Groove; 232. Buckle assembly; 2321. Axial limiting buckle; 2322. Rotation limiting buckle; 233. Through hole; 24. Second receiving groove; 241. Coil spring; 242. Data cable; 243. Second boss; 3. Circuit board assembly; 31. First circuit board; 311. Spring contact group; 32. Second circuit board; 321. Conductive slip ring; 41. First activity trajectory; 42. Second activity trajectory. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the scope of the present utility model.

[0036] It should be noted that the terms "first" and "second" in the specification and claims of this utility model are used to distinguish different objects, rather than to describe a specific order.

[0037] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0038] In this invention, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this invention and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0039] Furthermore, in addition to indicating direction or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this utility model according to the specific circumstances.

[0040] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; 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, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this utility model based on the specific circumstances.

[0041] Please see Figure 1 and Figure 4This utility model provides a telescopic cable module 100, including a housing assembly 1, a cable winding assembly 2, and a circuit board assembly 3, with the cable winding assembly 2 and the circuit board assembly 3 disposed inside the housing assembly 1.

[0042] Please see Figure 1 In one embodiment, the housing assembly 1 includes a front housing 11 and a rear housing 12, which are connected together; the main structure of the winding assembly 2 is a winding reel 21, which is rotatably fixed on the rear housing 12 and can rotate relative to the housing assembly 1.

[0043] Please see Figures 2 to 4 The circuit board assembly 3 includes a first circuit board 31 and a second circuit board 32. The first circuit board 31 is disposed on the front housing 11. The second circuit board 32 is disposed on the reel 21 corresponding to the first circuit board 31. When the second circuit board 32 rotates with the reel 21, the first circuit board 31 and the second circuit board 32 slide relative to each other. The first circuit board 31 and the second circuit board 32 are electrically connected and remain electrically connected during the relative sliding.

[0044] Please see Figure 5 The reel 21 is disc-shaped, and a first receiving groove 23 is provided on one end face of the reel 21. The first receiving groove 23 is located at the center of the reel 21. A buckle group 232 is provided on the outer edge of the first receiving groove 23 corresponding to the second circuit board 32.

[0045] Understandably, by using the disc-shaped coil 21 in conjunction with the dual circuit boards, the transmission of electrical signals during the rotation of the coil assembly 2 is achieved within a limited space. The central layout of the first receiving slot 23 makes the structure compact and reasonable, and the setting of the latching group 232 ensures that the second circuit board 32 will not experience axial displacement or circumferential rotation during rotation. This design is particularly suitable for electronic devices that require frequent extension and retraction, effectively preventing wire tangling. The design of the latching group 232 greatly enhances the stability of the electrical connection during rotation, ensuring that the signal is not interrupted during rotation, while reducing the risk of electrical failures due to poor contact.

[0046] Please see Figure 2 and Figure 5 The second circuit board 32 is disc-shaped; the latch assembly 232 includes an axial limiting latch 2321 and a rotation limiting latch 2322; the axial limiting latch 2321 and the rotation limiting latch 2322 are evenly arranged on the outer edge of the first receiving groove 23; the axial limiting latch 2321 is used to limit the axial movement of the second circuit board 32; the rotation limiting latch 2322 is used to prevent the second circuit board 32 from rotating in the circumferential direction; Understandably, the design of the two types of latches working together to secure the circuit board 32 prevents it from moving during rotation. The axial limiting latch 2321 effectively prevents displacement of the circuit board during vibration, while the anti-rotation latch ensures stability during rotation. The evenly distributed latch layout ensures more balanced force distribution, avoiding localized stress concentration. This design effectively guarantees the stability of electrical connections and improves product reliability under harsh conditions in high-speed rotating and vibrating working environments.

[0047] Please see Figure 5 The reel 21 is provided with a sliding rail 22; the sliding rail 22 is located on the same side end face of the first receiving groove 23 and is arranged around the first receiving groove 23; Please see Figure 3 and Figure 6 A swing member 111 is provided on the front housing 11 corresponding to the sliding rail 22; the swing member 111 is provided with a first boss 1111; the first boss 1111 moves relative to the sliding rail 22. When the first boss 1111 moves within the sliding rail 22, the side wall of the sliding rail 22 abuts against the first boss 1111, thereby causing the swing member 111 to deflect.

[0048] Specifically, the front housing 11 is provided with a first mounting groove 112, a second mounting groove 113, a fixing claw 114, a fixing through hole 115, and an edge hole 116; the first mounting groove 112 is used to install the swing component 111; the second mounting groove 113 is used to install the first circuit board 31; the fixing claw 114 is used to cooperate with the rear housing 12 to connect the housing assembly 1; the fixing through hole 115 is located at the center of the front housing 11; a screw 1151 is provided on the fixing through hole 115 for cooperation with the rear housing 12, and the entire assembly is fixed; the front housing 11 is provided with multiple edge holes 116, which surround the second mounting groove 113; the electrical signals of the first circuit board 31 can be led out through the edge holes 116, and the rotation of the winding reel 21 can also be observed.

[0049] Understandably, the coordinated design of the sliding rail 22 and the swing element 111 makes the rotation of the telescopic cable module 100 smoother. This structure achieves precise control of the rotation trajectory of the cable reel 21 through the precise movement of the first boss 1111 on the sliding rail 22. During user operation, this design effectively guides the orderly winding and unwinding of cables, preventing jamming or misalignment.

[0050] Please see Figure 7 A support column 121 is provided at the center of the rear housing 12; the support column 121 and the screw 1151 cooperate to fix the entire telescopic line module 100.

[0051] Understandably, the integrated design of the support column 121 provides stable rotational support for the reel 21. This structure ensures that the reel 21 maintains dynamic balance even during high-speed rotation, effectively preventing component wear caused by eccentric vibration. The design of the rear housing 12 and the support column 121 enhances the structural strength of the entire module.

[0052] Please see Figure 8 A second receiving groove 24 is provided on the other end face of the cable reel 21; a coil spring 241 is provided inside the second receiving groove 24; a data cable 242 is arranged around the outside of the second receiving groove 24.

[0053] Please see Figure 9 The housing assembly 1 is provided with a cable outlet 122, and the movable end of the data cable 242 passes through the cable outlet 122 and is exposed on the housing assembly 1. The housing assembly 1 is provided with a roller 123 corresponding to the cable outlet 122 to cooperate with the data cable 242.

[0054] Understandably, the design of the second receiving slot 24 provides storage space for the data cable 242, which, together with the cable outlet 122 and the roller 123, constitutes a cable protection system. The addition of the roller 123 significantly reduces the frictional resistance experienced by the data cable 242 during extension and retraction, resulting in smoother and more natural cable exit. This design not only effectively extends the lifespan of the data cable 242 but also prevents the cable from twisting and deforming during repeated use, thus improving the product's durability.

[0055] Please see Figure 5 and Figure 8 The data cable 242 is electrically connected to the second circuit board 32. The electrical connection position is filled with UV, silicone or epoxy resin for fixation. The first receiving groove 23 is provided with a groove 231 and a through hole 233 corresponding to the connection position of the data cable 242 and the second circuit board 32. The through hole 233 is located inside the groove 231.

[0056] Understandably, the layout of the groove 231 and through-hole 233 provides protection for the connection between the data cable 242 and the circuit board, effectively preventing fatigue fracture of the solder joint caused by bending at the connection point. By controlling the depth of the groove 231 and the position of the through-hole 233, the optimal bending radius is maintained at the connection point between the data cable 242 and the circuit board during expansion and contraction. This structure improves the reliability of the electrical connection and significantly reduces the product failure rate caused by damage to the cable connection.

[0057] Please see Figure 2 and Figure 4A spring group 311 is fixed on the first circuit board 31, and the spring group 311 is located near the second circuit board 32. One end of the spring group 311 is electrically connected to the first circuit board 31, and the other end of the spring group 311 is electrically connected to the second circuit board 32. There is more than one spring group 311. A circular conductive slip ring 321 is provided on the second circuit board 32 corresponding to the spring group 311.

[0058] Understandably, the combination of the spring assembly 311 and the circular conductive slip ring 321 constitutes a sliding electrical connection structure. This design ensures that the first and second circuit boards 32 maintain a stable electrical connection during relative rotation, with a small fluctuation range in contact resistance. It is particularly suitable for applications requiring rotation and high signal stability. The structure of multiple spring assemblies 311 provides stability and substitutability, preventing the failure of a single spring assembly 311 from causing the entire system to fail.

[0059] Please see Figure 5 The sliding track 22 includes an inner track 221, an outer track 223, a first protrusion 2221, and a second protrusion 2224. The inner track 221 and the outer track 223 are coaxially arranged, and the outer track 223 is located outside the inner track 221. An annular protrusion 222 is provided between the inner track 221 and the outer track 223. The annular protrusion 222 has a break position. The first protrusion 2221 and the second protrusion 2224 are located at the break position of the annular protrusion 222. The first protrusion 2221 and the first protrusion 1111 cooperate to stop the winding assembly 2.

[0060] Understandably, the innovative design of the dual-track system with protrusions enables precise limit control. The dual-track design ensures that the data cable 242 does not tangle when it extends or retracts along different tracks, while the break point design of the annular protrusion 222 creates a stopping point. This structure allows the cable reel 21 to reliably lock in a preset position. During use, users can feel a clear sense of segment positioning, greatly improving the user experience and safety of the product.

[0061] The first protrusion 2221 is provided with a first guide surface 2222. The winding assembly 2 rotates under the action of tension. When the tension stops, the first guide surface 2222 of the first protrusion 2221 cooperates with the first boss 1111 to stop the winding assembly 2.

[0062] Specifically, the first protrusion 2221 is provided with a first guide surface 2222 and a second guide surface 2223, the second protrusion 2224 is provided with a third guide surface 2225, and the annular protrusion 222 is provided with a fourth guide surface 2226.

[0063] Please see Figure 10In one implementation, the first protrusion 1111 is initially positioned on the inner track 221. When a pulling force is applied to the winding reel 21, the first protrusion 1111 begins to slide relative to the inner track 221. After passing the third guide surface 2225, it slides past the second guide surface 2223 and enters the outer track 223. During this period, the trajectory traversed by the first protrusion 2221 is the first active trajectory 41.

[0064] Please see Figure 11 In one implementation, the first protrusion 1111 is initially in the outer track 223. The winding reel 21 rotates under the action of tension. At this time, the tension is suddenly lost, the relative movement direction of the first protrusion 2221 changes, slides into the first guide surface 2222 and stops. At this time, tension is applied to the winding reel 21 again, and the first protrusion 1111 slides into the inner track 221 under the action of the first guide surface 2222 and the fourth guide surface 2226. During this period, the trajectory traversed by the first protrusion 2221 is the second active trajectory 42.

[0065] Understandably, the guide surface design enables a smooth stopping experience. This allows the first protrusion 1111 to naturally slide into the stopping position during movement, effectively reducing mechanical wear. This design allows for quick stopping when the user stops applying force, and the angle of the guide surface ensures smooth disengagement upon reapplying force, resulting in a seamless process.

[0066] Please see Figure 8 The second receiving groove 24 of the winding reel 21 is provided with a second boss 243 and a coil spring 241; the tail end of the coil spring 241 is connected to the second boss 243; the center end of the coil spring 241 is connected to the support column 121.

[0067] Understandably, the coil spring 241 provides a durable and stable rewinding force. The tail end of the coil spring 241 is connected to the second boss 243, and the center of the coil spring 241 is connected to the support column 121 to ensure smooth torque transmission. The support column 121 serves as the fixed center of the coil spring 241, making the rebound process smoother. Using the coil spring 241 to provide rewinding force ensures stable and undiminished power, resulting in high durability.

[0068] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A telescopic cable module, characterized in that: The device includes a housing assembly, a cable winding assembly, and a circuit board assembly, with the cable winding assembly and circuit board assembly disposed inside the housing assembly. The cable winding assembly has a cable reel, which is rotatable relative to the housing. The circuit board assembly includes a first circuit board and a second circuit board, with the first circuit board disposed on the housing assembly. The second circuit board is disposed on the cable reel corresponding to the first circuit board. The second circuit board slides relative to the cable reel as it rotates. The first circuit board and the second circuit board are electrically connected and remain electrically connected during relative sliding. The cable reel is disc-shaped, with a first receiving groove on one end face, located at the center of the cable reel. A latching assembly is provided on the outer edge of the first receiving groove corresponding to the second circuit board.

2. The telescopic cable module as described in claim 1, characterized in that: The winding reel is provided with a sliding track; the sliding track is located on the same side end face and is arranged around the first receiving groove; a corresponding swing member is provided on the housing assembly; the swing member is provided with a first boss; the first boss moves relative to the sliding track.

3. The telescopic cable module as described in claim 1, characterized in that: A second receiving groove is provided on the other end face of the cable reel; a data cable is provided on the second receiving groove, and a cable outlet is provided on the housing assembly. The movable end of the data cable passes through the cable outlet and is exposed on the housing assembly. The housing assembly is provided with a roller that cooperates with the data cable corresponding to the cable outlet.

4. The telescopic cable module as described in claim 3, characterized in that: The data cable is electrically connected to the second circuit board. The electrical connection position is filled with UV, silicone or epoxy resin for fixation. The first receiving groove is provided with a groove and a through hole corresponding to the connection position between the data cable and the second circuit board. The through hole is located inside the groove.

5. The telescopic cable module as described in claim 1, characterized in that: A spring contact assembly is fixed on the first circuit board, and the spring contact assembly is located near the second circuit board; one end of the spring contact assembly is electrically connected to the first circuit board, and the other end of the spring contact assembly is electrically connected to the second circuit board; a circular conductive slip ring is provided on the second circuit board corresponding to the spring contact assembly.

6. The telescopic cable module as described in claim 1, characterized in that: The housing assembly includes a rear housing; a support column is provided at the center of the rear housing; and the winding reel is rotatably mounted on the support column.

7. The telescopic line module as described in claim 2, characterized in that: The sliding track includes an inner track, an outer track, a first protrusion, and a second protrusion. The inner track and the outer track are coaxially arranged, and the outer track is located outside the inner track. An annular protrusion is provided between the inner track and the outer track. The annular protrusion has a disconnected position. The first protrusion and the second protrusion are located at the disconnected position of the annular protrusion. The first protrusion and the first protrusion cooperate to stop the winding assembly.

8. The telescopic line module as described in claim 7, characterized in that: The first protrusion is provided with a first guide surface. The winding assembly rotates under the action of tension. When the tension stops, the first guide surface of the first protrusion cooperates with the first boss to stop the winding assembly. The first protrusion is provided with a first guide surface and a second guide surface, the second protrusion is provided with a third guide surface, and the annular boss is provided with a fourth guide surface. When tension is applied to the winding reel, the first boss begins to slide relative to the first boss, passes the third guide surface, slides past the second guide surface, and enters the outer track. When the first boss is initially in the outer track, the winding reel rotates under the action of tension. At this time, the tension is suddenly lost, the relative movement direction of the first protrusion changes, slides into the first guide surface, and stops. At this time, when tension is applied to the winding reel again, the first boss slides into the inner track under the action of the first guide surface and the fourth guide surface.

9. The telescopic cable module as described in claim 1, characterized in that: The second circuit board is disc-shaped; the latch group includes an axial limiting latch and a rotation limiting latch; the axial limiting latch and the rotation limiting latch are evenly arranged on the outer edge of the first receiving groove; the axial limiting latch is used to limit the axial movement of the second circuit board; the rotation limiting latch is used to prevent the second circuit board from rotating in the circumferential direction.

10. The telescopic line module as described in claim 6, characterized in that: The winding reel is provided with a second boss and a coil spring; the tail end of the coil spring is connected to the second boss; the center end of the coil spring is connected to the support column.

Images