A telescopic module

Abstract

The utility model relates to a kind of telescopic modules, including shell assembly and winding assembly, winding assembly includes winding reel, and winding reel is equipped with the first annular boss in end face;First annular boss is equipped with multiple detent tooth grooves;The inner surface of shell assembly is fixed with reset swing assembly and second swing piece;Reset swing assembly includes second swing piece and elastic member;Second swing piece is set corresponding to first annular boss;Detent tooth groove is matched with the free end of second swing piece;The elastic member is located at the fixed end of second swing piece, and continuously exerts the resistance force to second swing piece, when winding reel rotates, second swing piece knocks detent tooth groove under the action of resistance force, realize the sound feedback in the telescopic module data line telescopic process.First swing piece free end is equipped with first boss and the movable track of winding reel end face cooperation, data line is stopped in the process of pulling, realize the position locking of data line, and data line is unlocked again.

Description

Technical Field

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

[0002] Currently, most mainstream telescopic modules use a wheel-spring structure to achieve automatic rewinding, with the spring providing restoring force to retract the cable. However, the telescopic feedback function of existing products has obvious design flaws. Traditional telescopic structures do not have a noticeable stop or engagement during extension, making it difficult for users to judge the length of the cable pulled out. In terms of auditory feedback, existing products generate sound feedback through a ball-dampening groove structure, but this design cannot be widely adopted due to cost limitations. Utility Model Content

[0003] To address the lack of telescopic feedback in existing telescopic module designs, this utility model provides a telescopic module.

[0004] The present invention provides a telescopic module, comprising a housing assembly and a winding assembly, wherein the winding assembly is located inside the housing assembly and includes a rotatably mounted winding reel; a first annular boss is provided on one side of the winding reel; the first annular boss has multiple locking grooves; a rotatable and resettable swing assembly and a first swing member are fixed on the inner surface of the housing assembly; the resettable swing assembly includes a second swing member and an elastic member; the second swing member is disposed corresponding to the first annular boss; the elastic member is fixed to the inner surface of the housing assembly; the elastic member abuts against the fixed end of the second swing member, continuously applying a holding force to the second swing member; as the winding reel rotates, the free end of the second swing member engages with the first annular boss or locking grooves; the free end of the first swing member has a first boss; a movable track is provided on one side of the winding reel; the first swing member is disposed corresponding to the movable track; the first boss engages with the movable track.

[0005] Preferably, the first annular boss is located in the middle of the winding reel; the first annular boss and the movable track are on the same side of the winding reel but not on the same plane; the movable track is arranged around the first annular boss.

[0006] Preferably, the movable track is a groove on the reel, with a second annular protrusion inside; the second annular protrusion divides the movable track into an inner track and an outer track, the inner track and the outer track being arranged adjacent to each other; the second annular protrusion has a break point, the break point having a locking protrusion; the locking protrusion has a guide surface; the guide surface is used to guide the first protrusion to switch tracks.

[0007] Preferably, a first circuit board is provided at the center of the inner surface of the housing assembly; a second circuit board is provided at the center of the winding reel; the first circuit board and the second circuit board cooperate; the first circuit board is fixed; the second circuit board rotates with the winding reel; a spring contact group is provided on the first circuit board; a conductive ring is provided on the second circuit board corresponding to the spring contact group; the conductive ring is arranged around the center of the second circuit board; the spring contact group is located between the first circuit board and the second circuit board; the first circuit board and the second circuit board are electrically connected to the spring contact group; the first circuit board and the second circuit board are electrically connected through the spring contact group.

[0008] Preferably, there are three spring clip groups, and spring clips are fixed on the spring clip groups.

[0009] Preferably, a data cable is wound around the winding assembly, and the movable end of the data cable passes through the housing assembly and is exposed; the second circuit board is electrically connected to the fixed end of the data cable.

[0010] Preferably, a coil spring is provided at the center of the winding reel; the fixed end of the coil spring is connected to the winding reel.

[0011] Preferably, a cover plate is provided at the coil spring of the winding reel.

[0012] Preferably, the housing assembly includes a front housing and a rear housing; an accommodating space is formed between the front housing and the rear housing; the front housing is provided with a support post located at the center of the front housing; the coil is provided with a through hole at the center of the coil; the first circuit board has a first through hole at the center; the second circuit board has a second through hole at the center; the support post passes through the first through hole, the second through hole and the through hole to fix the coil spring to the rear housing.

[0013] Preferably, the rear housing is provided with five protruding hooks.

[0014] Compared with the prior art, the telescopic module provided by this utility model has the following advantages: 1. This utility model embodiment provides a telescopic module, the overall structure of which includes a housing assembly and a cable winding assembly. Through the cooperation of a resettable swing assembly and a first annular boss locking groove, audible feedback is achieved when the cable winding reel rotates, clearly conveying the completion status of the telescopic action. Simultaneously, the coordinated design of the first swing component and the movable track provides a mechanical basis for locking the data cable when it stops during the pulling process, enhancing operational flexibility.

[0015] 2. In the telescopic module provided in this utility model embodiment, the first annular boss and the movable track adopt a staggered layout with different planes on the same side, and maximize the use of the side space of the winding reel through a wraparound design. This achieves the integration of multiple components without increasing the product volume, significantly improving space utilization and making the overall structure more compact, which is suitable for the needs of miniaturization.

[0016] 3. In the telescopic module provided in this embodiment of the utility model, the movable track is divided into inner and outer double tracks by the second annular boss. Combined with the locking protrusion and guide surface structure at the break point, this achieves smooth switching and reliable positioning of the first boss between the tracks. The guide surface reduces switching resistance and improves the operating feel, while the locking protrusion ensures that the data cable is locked when pulled and unlocked when pulled again, meeting different cable length requirements and enhancing product applicability.

[0017] 4. The telescopic module provided in this embodiment of the utility model adopts an innovative design of a fixed first circuit board and a rotating second circuit board. Through the cooperation of the spring contact group and the conductive ring, when the second circuit board rotates with the winding reel, the spring contact group slides on the conductive ring, maintaining a stable electrical connection during the 360° rotation of the winding reel. The conductive ring is arranged around the center to ensure contact at all angles, and the spring contact group provides continuous contact pressure, solving the problems of easy tangling and poor contact in traditional wiring methods during rotation, and ensuring stable transmission of data line signals.

[0018] 5. In the telescopic module provided in this embodiment, the design of three sets of spring contacts significantly improves the reliability of electrical connections. The multi-contact distribution effectively disperses the current load and reduces the risk of single-point contact failure. The spring contact fixing structure ensures that stable contact pressure is maintained even after long-term use, reducing poor contact caused by vibration or wear, making it particularly suitable for vibration environments.

[0019] 6. In the telescopic module provided in this embodiment of the utility model, the integrated design of the cable winding assembly and the data cable allows the movable end to pass through the housing assembly and be exposed for easy insertion and removal. This structure is convenient to use and also avoids problems such as messy external wiring.

[0020] 7. In the telescopic module provided in this embodiment, the coil spring design at the center of the cable reel enables automatic cable retraction, eliminating the need for manual cable management and effectively solving the problem of cable tangling in complex environments. The rigid connection between the fixed end of the coil spring and the cable reel ensures stable output of winding power and uniform winding speed, improving the user experience.

[0021] 8. In the telescopic module provided in this utility model embodiment, the cover plate design at the coil spring of the winding reel effectively isolates external dust and foreign objects, protects the core elastic components such as the coil spring from contamination, and extends the service life; at the same time, it plays a limiting role, preventing the coil spring from radially shifting during rotation, and ensuring the long-term stable operation of the winding mechanism.

[0022] 9. In the telescopic module provided in this embodiment of the utility model, the design of the central support column of the front housing penetrating through the first circuit board, the second circuit board, and the central hole of the winding reel forms a rigid spindle structure, providing a stable rotation axis for the entire winding system. This design significantly reduces radial wobble during high-speed rotation, reduces component wear, simplifies the assembly process, and improves production efficiency.

[0023] 10. In the telescopic module provided in this embodiment of the utility model, the snap-fit ​​design of the five protruding hooks on the rear housing enables tool-free and rapid assembly of the housing components, significantly shortening the assembly time compared to the traditional screw fixing method. The hook structure provides uniform locking force, ensuring the tightness of the housing connection, while also facilitating later maintenance and disassembly, reducing maintenance costs. Attached Figure Description

[0024] 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.

[0025] Figure 1 This is a structural schematic diagram of a telescopic module provided in an embodiment of the present utility model.

[0026] Figure 2 This is a structural diagram of the front shell of a telescopic module provided in an embodiment of this utility model.

[0027] Figure 3 This is a schematic diagram showing the cooperation between the reel of a telescopic module, the first swing member, and the second swing member provided in an embodiment of this utility model.

[0028] Figure 4 This is a schematic diagram of the first active trajectory of a telescopic module provided in an embodiment of this utility model.

[0029] Figure 5 This is a schematic diagram of the second movement trajectory of a telescopic module provided in an embodiment of this utility model.

[0030] Figure 6 This is an exploded view of the winding assembly of a telescopic module provided in an embodiment of this utility model.

[0031] Figure 7 This is a schematic diagram showing the cooperation between the first circuit board and the second circuit board of a telescopic module provided in an embodiment of this utility model.

[0032] Figure 8This is a schematic diagram of the structure of a spring group of a telescopic module provided in an embodiment of this utility model.

[0033] Figure 9 This is a schematic diagram showing the cooperation between the support column, the winding assembly, and the rear shell of a telescopic module provided in this embodiment of the utility model.

[0034] Figure 10 This is a schematic diagram of the structure of the shell behind a telescopic module provided in an embodiment of this utility model.

[0035] Explanation of reference numerals in the attached diagram: 100. Telescopic module; 1. Housing assembly; 11. Front housing; 12. Rear housing; 111. First swing member; 1111. First boss; 112. Resettable swing assembly; 1121. Second swing member; 1122. Elastic member; 113. First mounting groove; 1131. First protrusion; 114. Second mounting groove; 1141. Second protrusion; 1142. Hook-shaped protrusion; 115. Support post; 116. First edge hole; 117. Second edge hole; 118. First circuit board; 1181. Spring assembly; 1182. Spring; 1183. First through hole; 121. Hook; 122. Annular protrusion; 123. Connecting hole; 2. Cable winding assembly; 21. Cable winding reel; 22. First annular boss; 221. Locking groove; 23. Movable track; 231. Second annular boss; 2311. Disconnection point; 2312. Locking protrusion; 2313. Guide surface; 2314. First guide surface; 2315. Second guide surface; 232. Inner track; 233. Outer track; 24. Circumferential side groove; 25. Central groove; 251. Fixing protrusion; 252. Cover plate; 2521. Cover plate through hole; 26. Data cable; 27. Second circuit board; 271. Second through hole; 272. Conductive ring; 28. Through hole; 29. ​​Coil spring; 31. First activity trajectory; 32. Second activity trajectory. Detailed Implementation

[0036] 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.

[0037] 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.

[0038] 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.

[0039] 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.

[0040] Furthermore, in addition to indicating location 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.

[0041] 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.

[0042] Please see Figure 1 This utility model provides a telescopic module 100, including a housing assembly 1 and a cable winding assembly 2. The cable winding assembly 2 is located inside the housing assembly 1 and is used to release the cable under tension and automatically retract the cable.

[0043] Please see Figures 1 to 3The winding reel 21 has a first annular boss 22 on one end face; the first annular boss 22 has a plurality of locking grooves 221; a rotatable and resettable swing assembly 112 and a first swing member 111 are installed on the inner surface of the housing assembly 1; the resettable swing assembly 112 includes a second swing member 1121 and an elastic member 1122; the second swing member 1121 is disposed corresponding to the first annular boss 22; the elastic member 1122 is fixed to the inner surface of the housing assembly 1; the elastic member 1122 abuts against the second swing member 1121 for fixation. The end of the winding reel 21 continuously applies a supporting force to the second swing member 1121; as the winding reel 21 rotates, the free end of the second swing member 1121 engages with the first annular boss 22 or the locking groove 221; the free end of the first swing member 111 is provided with a first boss 1111; the resettable swing assembly 112 and the first swing member 111 are spaced apart; a movable track 23 is provided on one side end face of the winding reel 21; the first swing member 111 is provided corresponding to the movable track 23; the first boss 1111 engages with the movable track 23.

[0044] Please see Figures 1 to 3 The housing assembly 1 includes a front housing 11 and a rear housing 12; a receiving space is formed between the front housing 11 and the rear housing 12; the inner surface of the front housing 11 is provided with a first mounting groove 113 and a second mounting groove 114, the first mounting groove 113 is provided with a first protrusion 1131; the second mounting groove 114 includes a second protrusion 1141 and a hook-shaped protrusion 1142; the cable winding assembly 2 includes a rotatably disposed cable reel 21; the cable reel 21 is provided with a circumferential side groove 24; a data cable 26 is wound around the circumferential side groove 24; a first swing member 111 is rotatably mounted on the first protrusion 1131; the elastic member 1122 is a retaining spring, the second swing member 1121 is rotatably mounted on the second protrusion 1141, and the two ends of the retaining spring are fixed on the hook-shaped protrusion 1142; The elastic element 1122 is fixed to the inner surface of the front housing 11. As the winding reel 21 rotates, the free end of the second swing element 1121 engages with the first annular boss 22 or the locking tooth groove 221. The free end of the second swing element 1121 strikes the locking tooth groove 221 to produce a mechanical sound. After being reset by the supporting force of the elastic element 1122, it continues to strike the next section of the locking tooth groove 221. This process is repeated to achieve continuous mechanical sound during the rotation of the winding reel 21. The overall structure integrates the housing assembly 1 and the winding assembly 2. Through the engagement of the resettable swing element 112 and the locking tooth groove 221, sound feedback is achieved when the winding reel 21 rotates, clearly conveying the completion status of the extension and retraction action.

[0045] Please see Figure 2 and Figure 3The first swing member 111 is set corresponding to the movable track 23; the movable track 23 is a groove on the winding reel 21, and a second annular boss 231 is provided inside; the second annular boss 231 divides the movable track 23 into an inner track 232 and an outer track 233, which are arranged adjacent to each other; the first boss 1111 cooperates with the inner track 232 or the outer track 233 in the movable track 23; the second annular boss 231 is provided with a break point 2311, and the break point 2311 is provided with a locking protrusion 2312; the locking protrusion 2312 is provided with a guide surface 2313; the guide surface 2313 is used to guide the first boss 1111 to switch tracks; Please continue reading. Figure 3 , Figure 4 and Figure 5 , Figure 4 This is a schematic diagram of the first activity trajectory 31, showing the movement trajectory of the first protrusion 1111 on the activity track 23 during the pulling process of the data line 26; Figure 5 This is a schematic diagram of the second active trajectory 32, illustrating the movement trajectory of the first protrusion 1111 on the active track 23 during the process of the data cable 26 stopping its stretching and retraction. In one implementation, the data cable 26 is initially fully wound, and the first protrusion 1111 is initially on the inner track 232. When the data cable 26 is pulled, the winding reel 21 rotates counterclockwise, and the first protrusion 1111 moves relative to the data cable 26 on the inner track 232 according to the trajectory shown in the first active trajectory 31. The first protrusion 1111 first passes the break point 2311, and under the guidance of the first guide surface 2314, the first protrusion 1111 switches to the outer track 233 to continue moving. If the pulling action stops, the winding reel 21 rotates clockwise, and the first protrusion 1111 moves to the outer track 233. One protrusion 1111 moves along the trajectory described in the second movable trajectory 32. The first protrusion 1111 falls into the second guide surface 2315, locking the position of the data cable 26. At this time, the data cable 26 is pulled again, and the reel 21 rotates counterclockwise. Under the action of the second guide surface 2315, the first protrusion 1111 switches to the inner track 232, the data cable 26 is unlocked, and the reel 21 continues to rotate. At this time, no more pulling force is applied, and the first protrusion 1111 will stay in the inner track 232 until the data cable 26 is completely retracted into the reel 21. The movable track 23 is divided into inner and outer double track designs by the second annular protrusion 231. With the locking protrusion 2312 of the disconnection point 2311 and the structure of the guide surface 2313, the first protrusion 1111 can be smoothly switched between tracks. The guide surface 2313 reduces switching resistance and improves the operating feel, while the locking protrusion 2312 ensures that the data cable 26 is locked when it stops during pulling and unlocked when it is pulled again, meeting different cable length requirements and enhancing product applicability. The coordinated design of the first swing component 111 and the movable track 23 provides a mechanical basis for locking the data cable 26 when it stops during pulling, enhancing operational flexibility.

[0046] Please see Figure 2 and Figure 3 A first edge hole 116 is provided on the front housing 11 so that the edge of the winding reel 21 is exposed outside the housing, and the rotation state of the winding reel 21 can be observed.

[0047] Please see Figure 3 The first annular boss 22 is located in the middle of the winding reel 21. The first annular boss 22 and the movable track 23 are on the same end face of the winding reel 21 but not on the same plane. The movable track 23 is arranged around the first annular boss 22. The first annular boss 22 and the movable track 23 adopt a staggered layout with different planes on the same side end face, and maximize the use of the side space of the winding reel 21 through the surrounding design. This achieves the integration of multiple components without increasing the product volume, significantly improves the space utilization rate, makes the overall structure more compact, and is suitable for the needs of miniaturization.

[0048] Please see Figure 2 , Figure 6 and Figure 7 A first circuit board 118 is located at the center of the inner surface of the front housing 11; a second circuit board 27 is located at the center of the winding reel 21; the first circuit board 118 and the second circuit board 27 cooperate; the first circuit board 118 is fixed; the second circuit board 27 rotates with the winding reel 21; a spring contact assembly 1181 is provided on the first circuit board 118; corresponding to the spring contact assembly 1181, a conductive ring 272 is provided on the second circuit board 27; the conductive ring 272 is arranged around the center of the second circuit board 27; the spring contact assembly 1181 is located between the first circuit board 118 and the second circuit board 27; the first circuit board 118 and the second circuit board 27 are electrically connected to the spring contact assembly 1181; the first circuit board 118 and the second circuit board 27 are electrically connected through the spring contact assembly 1181. When the second circuit board 27 rotates with the winding reel 21, the spring contact assembly 1181 slides on the conductive ring 272, ensuring a reliable electrical connection between the first circuit board 118 and the second circuit board 27 during the rotation of the winding reel 21. The design employs a fixed first circuit board 118 and a rotating second circuit board 27. Through the cooperation of the spring contact assembly 1181 and the conductive ring 272, a stable electrical connection is maintained during the rotation of the reel 21. The conductive ring 272 is arranged around the center to ensure contact at all angles, and the spring contact assembly 1181 provides continuous contact pressure, solving the problems of easy tangling and poor contact during rotation in traditional wiring methods, thus ensuring stable signal transmission of the data cable 26. A second edge hole 117 is provided on the front housing 11, exposing the solder pads on one side of the first circuit board 118 to lead out the power and signal lines of the data cable 26.

[0049] Please see Figure 7 and Figure 8There are three spring contact groups 1181; the spring contact groups 1181 are arranged in an array, and spring contact 1182 is fixed on each spring contact group 1181. The part of spring contact 1182 that connects to the second circuit board 27 is arc-shaped and concave along the long side central axis, and the free end is upturned. The design of three spring contact groups 1181 significantly improves the reliability of electrical connection. The multi-contact distribution effectively disperses the current load and reduces the risk of single-point contact failure. The fixing structure of spring contact 1182 ensures that stable contact pressure is maintained after long-term use, reducing poor contact caused by vibration or wear, and is particularly suitable for vibration environments.

[0050] Please see Figure 1 and Figure 6 The movable end of the data cable 26 passes through the housing assembly 1 and is exposed; the second circuit board 27 is electrically connected to the fixed end of the data cable 26. The integrated design of the cable reel assembly 2 and the data cable 26 allows the movable end to pass through the housing assembly 1 for easy insertion and removal. This structure is convenient to use and also avoids problems such as messy external wiring.

[0051] Please see Figure 2 and Figure 6 The cable reel 21 has a central groove 25, and a fixing protrusion 251 is provided in the central groove 25. A coil spring 29 is located at the center of the cable reel 21. The coil spring 29 is located inside the central groove 25, and its tail end is connected to the fixing protrusion 251. The center end of the coil spring 29 is connected to the support column 115. The coil spring 29 is designed to realize the automatic retraction function of the data cable 26, so that the user does not need to manually tidy up the data cable 26 after use, effectively solving the problem of data cable 26 tangling in complex environments. The rigid connection between the tail end of the coil spring 29 and the cable reel 21 and the center end of the coil spring 29 and the support column 115 ensures stable output of winding power and uniform winding speed, improving the user experience. The central groove 25 is provided with a cover plate 252, and the cover plate 252 is provided with a cover plate through hole 2521. The cover plate 252 at the coil spring 29 is designed to effectively isolate external dust and foreign objects, protect the core elastic components such as the coil spring 29 from contamination, and extend the service life; at the same time, it plays a limiting role to prevent the coil spring 29 from radially deviating when rotating, and ensure the long-term stable operation of the take-up mechanism.

[0052] Please see Figure 6 , Figure 7 and Figure 9The front housing 11 is equipped with a support column 115, which is located at the center of the front housing 11. A slit runs through the center of the support column 115 to secure the center end of the coil spring 29. A through hole 28 is located at the center of the winding reel 21. A first through hole 1183 is located at the center of the first circuit board 118. A second through hole 271 is located at the center of the second circuit board 27. After securing the center end of the coil spring 29 through the first through hole 1183, the second through hole 271, and the through hole 28, the support column 115 passes through the cover plate through hole 2521 and connects to the rear housing 12. The design of the support column 115 passing through the first circuit board 118, the second circuit board 27, and the center hole of the winding reel 21 forms a rigid spindle structure, providing a stable rotation axis for the entire system. This design significantly reduces radial wobble during high-speed rotation, reduces component wear, simplifies the assembly process, and improves production efficiency.

[0053] Please see Figure 10 The rear housing 12 has five protruding hooks 121. In other embodiments, the number of hooks 121 can be set according to requirements. The snap-fit ​​design of the five protruding hooks 121 on the rear housing 12 enables tool-free and rapid assembly of the housing assembly 1, significantly shortening the assembly time compared to traditional screw fixing methods. The hook 121 structure provides uniform locking force, ensuring tightness of the housing connection, while facilitating later maintenance and disassembly, reducing maintenance costs. The rear housing 12 is provided with annular protrusions 122 and connecting holes 123, which cooperate with the grooves on the cover plate 252, reducing friction between the cover plate 252 and the rear housing 12 when the winding reel 21 rotates. The connecting holes 123 are used to connect the support column 115, making the support column 115 more stable and improving the overall stability.

[0054] Please combine Figures 1 to 10 The working process / principle of this utility model embodiment is briefly described as follows: The telescopic module 100 provided in this utility model embodiment includes a housing assembly 1 and a winding assembly 2, with the winding assembly 2 located inside the housing assembly 1. Regarding sound feedback, the free end of the second swing member 1121 cooperates with the first annular boss 22 or the locking groove 221. The free end of the second swing member 1121 strikes the locking groove 221, producing a mechanical sound. After being reset by the supporting force of the elastic member 1122, it continues to strike the next section of the locking groove 221, repeating this process to continuously produce a mechanical sound during the rotation of the winding reel 21. The overall structure integrates the housing assembly 1 and the winding assembly 2. Through the cooperation of the resettable swing member 112 and the locking groove 221, sound feedback is achieved when the winding reel 21 rotates, clearly conveying the completion status of the telescopic action.

[0055] Regarding track switching, the data cable 26 is initially fully wound up, and the first protrusion 1111 is initially in the inner track 232. When the data cable 26 is pulled, the reel 21 rotates counterclockwise. As the first protrusion 1111 moves relative to the inner track 232, it passes the break point 2311. Guided by the first guide surface 2314, the first protrusion 1111 switches to the outer track 233. If the pulling action stops, the reel 21 rotates clockwise, and the first protrusion 1111 falls into the second guide surface 2315, locking the position of the data cable 26. When the data cable 26 is pulled again, the reel 21 rotates counterclockwise. Under the action of the second guide surface 2315, the first protrusion 1111 switches to the inner track 232, the data cable 26 is unlocked, and the reel 21 continues to rotate. At this time, no more pulling force is applied, and the first protrusion 1111 will remain in the inner track 232 until the data cable 26 is completely and automatically retracted into the reel 21. The movable track 23 is divided into inner and outer double track designs by the second annular boss 231. With the locking boss 2312 and guide surface 2313 structure at the break point 2311, the first boss 1111 can be smoothly switched between tracks.

[0056] In terms of electrical connection, when the second circuit board 27 rotates with the reel 21, the spring assembly 1181 slides on the conductive ring 272 to ensure a reliable electrical connection between the first circuit board 118 and the second circuit board 27 during the rotation of the reel 21.

[0057] In terms of overall structure, the support column 115 passes through the first through hole 1183, the second through hole 271, and the through hole 28 to fix the coil spring 29, and then passes through the cover plate through hole 2521 to connect with the rear housing 12. This forms a rigid main shaft structure, providing a stable rotation axis for the entire system.

[0058] 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 module, characterized in that: It includes a housing assembly and a winding assembly, the winding assembly being located inside the housing assembly, the winding assembly including a rotatably disposed winding spool; The winding reel has a first annular boss on one side end face; the first annular boss has multiple locking grooves; a rotatable and resettable swing assembly and a first swing member are mounted on the inner surface of the housing assembly; the resettable swing assembly includes a second swing member and an elastic member; the second swing member is disposed corresponding to the first annular boss; the elastic member is fixed to the inner surface of the housing assembly; the elastic member abuts against the fixed end of the second swing member, continuously applying a holding force to the second swing member; as the winding reel rotates, the free end of the second swing member engages with the first annular boss or locking grooves; the free end of the first swing member has a first boss; a movable track is provided on one side end face of the winding reel; the first swing member is disposed corresponding to the movable track; the first boss engages with the movable track.

2. The telescopic module as described in claim 1, characterized in that: The first annular boss is located in the middle of the winding reel; the first annular boss and the movable track are on the same end face of the winding reel but not on the same plane; the movable track is arranged around the first annular boss.

3. The telescopic module as described in claim 1, characterized in that: The movable track is a groove on the reel, with a second annular protrusion inside. The second annular protrusion divides the movable track into an inner track and an outer track, which are arranged adjacent to each other. The second annular protrusion has a break point, and the break point has a locking protrusion. The locking protrusion has a guide surface. The guide surface is used to guide the first protrusion to switch tracks.

4. The telescopic module as described in claim 3, characterized in that: A first circuit board is located at the center of the inner surface of the housing assembly; a second circuit board is located at the center of the winding reel; the first circuit board and the second circuit board cooperate; the first circuit board is fixed; the second circuit board rotates with the winding reel; a spring contact group is provided on the first circuit board; a conductive ring is provided on the second circuit board corresponding to the spring contact group; the conductive ring is arranged around the center of the second circuit board; the spring contact group is located between the first circuit board and the second circuit board; the first circuit board and the second circuit board are electrically connected to the spring contact group; the first circuit board and the second circuit board are electrically connected through the spring contact group.

5. The telescopic module as described in claim 4, characterized in that: There are three spring clip groups; spring clips are fixed on each spring clip group.

6. The telescopic module as described in claim 4, characterized in that: The data cable is wound around the winding assembly, and the movable end of the data cable passes through the housing assembly and is exposed; the second circuit board is electrically connected to the fixed end of the data cable.

7. The telescopic module as described in claim 4, characterized in that: A coil spring is provided at the center of the winding reel; the fixed end of the coil spring is connected to the winding reel.

8. The telescopic module as described in claim 7, characterized in that: The winding coil spring is provided with a cover plate; the cover plate is provided with a cover plate through hole.

9. The telescopic module as described in claim 8, characterized in that: The housing assembly includes a front housing and a rear housing; an accommodating space is formed between the front housing and the rear housing; the front housing is provided with a support column located at the center of the front housing; a through hole is provided at the center of the winding reel; a first through hole is provided at the center of the first circuit board; a second through hole is provided at the center of the second circuit board; the support column passes through the first through hole, the second through hole and the through hole to fix the coil spring, and passes through the through hole of the cover plate to connect with the rear housing.

10. The telescopic module as described in claim 9, characterized in that: The rear housing is provided with five protruding hooks.

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