Telescopic line module and charging device

Abstract

The utility model discloses a telescopic wire module and a charging device, the telescopic wire module comprises a winding roll, a circuit board arranged on the winding roll, and a wire wound on the winding roll, the wire comprises a wire core and a wire sheath wrapped on the outer side of the wire core, one end of the wire sheath forms an opening, one end of the wire core extends out of the wire sheath from the opening and is electrically connected with the circuit board, and the other end of the wire core is electrically connected with the circuit board. The wire is provided with a fixing member at the opening of the wire sheath, and the fixing member is fixedly connected with the wire core and the wire sheath. The fixing piece is arranged at the opening of the wire sheath and is fixedly connected with the wire core and the wire sheath respectively, so that the wire core which is positioned outside the wire sheath and is close to the opening and the wire sheath which is close to the opening are fixed together, and the wire core which is positioned outside the wire sheath and is close to the opening cannot move relative to the wire sheath; protrusions caused by deformation or movement of the wire cores in the wire skin relative to the wire skin are avoided, and the risk of skin breakage caused by abrasion due to protrusions in the stretching and retracting process of the wire is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic products, in particular to a telescopic wire module and a charging device. Background Art

[0002] Existing charging devices, such as chargers and power banks, often feature retractable cables for user convenience. The cables are pulled outward when in use and retracted when not in use. Because the cables are wound around a reel shaft, and a circuit board is located at the upper or lower end of the shaft, one end of the cables needs to be electrically connected to the circuit board within the charging device. To facilitate soldering between the cables and the circuit board, the core at the end where the cables connect to the circuit board needs to be exposed outside the cable sheath. When the cables are pulled, the core within the cable sheath deforms or becomes misaligned. Alternatively, the exposed cores may be bent, resulting in varying lengths. During the extension and retraction process, the core within the cable sheath deforms or becomes misaligned due to various factors, such as force and angle. These misalignments and deformations can easily create protrusions within the cable sheath. During the extension and retraction process, the protrusions can rub against the housing and other components of the charging device, causing the cable sheath to break, impacting both aesthetics and electrical safety. Utility Model Content

[0003] In view of this, the present invention provides a retractable cable module and a charging device to solve the above problems.

[0004] On the one hand, the present application provides a retractable wire module, comprising a wire reel, a circuit board mounted on the wire reel, and a wire wound on the wire reel, the wire comprising a wire core and a wire sheath wrapped around the outside of the wire core, one end of the wire sheath forming an opening, one end of the wire core extending from the opening to the outside of the wire sheath and electrically connected to the circuit board, the wire being provided with a fixing at the opening of the wire sheath, the fixing being fixedly connected to the wire core and the wire sheath, respectively.

[0005] In some embodiments, the fixing member is a fixing sleeve, and part of the fixing sleeve is fixedly arranged outside the wire core and part of the fixing sleeve is fixedly arranged outside the wire sheath.

[0006] In some embodiments, a limiting groove is provided on the cable reel, and the fixing sleeve is located in the limiting groove.

[0007] In some embodiments, a wiring groove is provided on the cable reel, one end of the wire close to the connection between the wire core and the circuit board is passed through the wiring groove, and the limiting groove is provided on the inner wall of the wiring groove.

[0008] In some embodiments, the two opposite inner walls of the wiring trough are respectively provided with the limiting grooves, and the opposite sides of the fixing sleeve are respectively located in the two limiting grooves.

[0009] In some embodiments, the fixing member is adhesive glue, and the adhesive glue is glued and fixed to the wire core and the wire sheath respectively.

[0010] In some embodiments, a glue dispensing port is provided through the circuit board, and the position of the adhesive corresponds to the position of the glue dispensing port.

[0011] In some embodiments, one end of the cable sheath close to the opening is at least partially glued and fixed to the cable reel.

[0012] In some embodiments, the thickness of the cable sheath is greater than 0.1 mm and less than 0.5 mm.

[0013] In some embodiments, the wire further includes a plug, the end of the wire core away from the circuit board is electrically connected to the plug, and the wire is provided with a thickened portion at the end of the wire sheath close to the plug, and the thickened portion surrounds the outer circumference of the wire sheath.

[0014] On the other hand, the present application provides a charging device, comprising a shell provided with a storage space, a charging module arranged in the storage space, and the retractable wire module as described above, wherein the circuit board of the retractable wire module is located in the storage space and is electrically connected to the charging module, and the end of the wire away from the circuit board extends to the outside of the shell.

[0015] In some embodiments, the wire further comprises a plug connected to a side of the wire core away from the circuit board, the housing is provided with a receiving groove and a connecting hole connecting the receiving space and the receiving groove, the plug is received in the receiving groove, and the wire is provided with a thickened portion at one end of the wire sheath close to the plug, the thickened portion being located in the receiving groove;

[0016] Along the thickness direction of the wire, the distance between the opposite sides of the thickened portion is greater than the length of the communicating hole and smaller than the distance between the opposite sides of the plug; and / or, along the width direction of the wire, the distance between the opposite sides of the thickened portion is greater than the width of the communicating hole and smaller than the distance between the opposite sides of the plug.

[0017] The telescopic wire module provided by the utility model provides a fixing piece at the opening of the wire sheath, and the fixing piece is fixedly connected to the wire core and the wire sheath respectively, so that the wire core located outside the wire sheath and close to the opening is fixed together with the wire sheath close to the opening, so that the wire core located outside the wire sheath and close to the opening cannot move relative to the wire sheath, thereby avoiding the wire core located inside the wire sheath from deforming or moving relative to the wire sheath to produce a bulge, and reducing the risk of the wire breaking due to wear and tear caused by the bulge during the extension and retraction process. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic structural diagram of a telescopic wire module provided in one embodiment of the present invention;

[0019] Figure 2 for Figure 1 Exploded schematic diagram of the telescopic line module shown in ;

[0020] Figure 3 for Figure 2 Schematic diagram of the assembly of the wire and the reel shown in ;

[0021] Figure 4 for Figure 3 The structural diagram of the cable reel shown in FIG;

[0022] Figure 5 for Figure 3 Schematic diagram of the structure of the wire shown in;

[0023] Figure 6 A schematic diagram of a telescopic cable module provided by another embodiment of the present invention with part of the housing removed;

[0024] Figure 7 A schematic structural diagram of a charging device provided in one embodiment of the present utility model;

[0025] Figure 8 for Figure 7 An exploded schematic diagram of the charging device is shown in FIG.

[0026] In the figure: 10, telescopic wire module; 12, cable reel; 14, circuit board; 16, wire; 18, shell; 20, wire core; 22, wire sheath; 23, opening; 24, fixing piece; 26, limit groove; 28, wiring groove; 30, glue dispensing port; 32, plug; 34, thickened part; 100, charging device; 103, shell; 105, charging module; 107, storage space; 109, storage slot; 111, connecting hole. DETAILED DESCRIPTION

[0027] Below, the present invention is further described in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0028] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, inside, outside, top, bottom...) are only used to explain the relative position relationship between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0029] It should also be noted that when an element is referred to as being “fixed on” or “disposed on” another element, the element may be directly on the other element or there may be an intermediate element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or there may be an intermediate element.

[0030] See also Figures 1 to 8 An embodiment of the present invention provides a retractable wire module 10 for use in a charging device 100, such as a charger or a mobile power supply. The charging device 100 is electrically connected to an electronic device via the retractable wire module 10, thereby charging the electronic device.

[0031] The retractable cable module 10 includes a cable reel 12, a circuit board 14 mounted on the cable reel 12, and a wire 16 wound on the cable reel 12. During the rotation of the cable reel 12, the wire 16 can move relative to the cable reel 12 to form an extension or retraction effect. Therefore, when the retractable cable module 10 needs to be used, the cable reel 12 can be controlled to extend the wire 16 outward so as to connect with the electronic device. When it is not needed, the cable reel 12 is controlled to retract the wire 16 and wind the wire 16 on the cable reel 12 to reduce the overall volume of the retractable cable module 10 when not in use.

[0032] In this embodiment, the retractable cable module 10 further includes a housing 18. The cable reel 12 is rotatably mounted within the housing 18. The circuit board 14 is positioned between the cable reel 12 and the housing 18. One end of the wire 16 extends outside the housing 18 to connect to an electronic device. When the wire 16 is pulled outward, extending toward the outside of the housing 18, the cable reel 12 rotates relative to the housing 18 in one direction. When the cable reel 12 rotates relative to the housing 18 in the opposite direction, the cable reel 12 retracts the wire 16 into the housing 18, thereby storing the wire 16 within the housing 18 and reducing the overall size.

[0033] Specifically, a fixed shaft is provided inside the shell 18, and an axis hole is provided on the winding drum 12. The winding drum 12 can be movably mounted outside the fixed shaft through the axis hole so that the winding drum 12 can be rotatably installed inside the shell 18, and the winding drum 12 can rotate around the fixed shaft relative to the shell 18.

[0034] Preferably, an elastic member, such as a coil spring, is disposed between the cable reel 12 and the housing 18. This elastic member deforms and generates an elastic force when the user pulls on the wire 16, causing the cable reel 12 to rotate relative to the housing 18. When the user releases the wire 16, the elastic force of the elastic member causes the cable reel 12 to rotate in the opposite direction, retracting the wire 16 and achieving automatic cable retraction, thus facilitating user convenience. In other embodiments, the retractable cable module 10 may also be devoid of the housing 18, with the cable reel 12 rotatably mounted directly within the housing 103 of the charging device 100.

[0035] In one embodiment, the wire 16 includes a core 20 and a sheath 22 wrapped around the core 20. The sheath 22 provides insulation and protects the core 20. An opening 23 is formed at one end of the sheath 22. One end of the core 20 extends through the opening 23 to the outside of the sheath 22 and is electrically connected to the circuit board 14. Specifically, the end of the core 20 connected to the circuit board 14 is exposed outside the sheath 22. This ensures that the core 20 is not interfered with by the sheath 22 during the connection between the core 20 and the circuit board 14, facilitating electrical connection between the core 20 and the circuit board 14.

[0036] The conductor 16 is flat, with multiple cores 20 arranged inside a cable sheath 22. The cores 20 are arranged sequentially along the width of the cable sheath 22. The circuit board 14 is located axially on one side of the cable reel 12. The cores 20 extend through an opening 23 in the cable sheath 22 and extend outside the cable sheath 22. They are then bent axially along the cable reel 12 and secured to the circuit board 14, forming an electrical connection.

[0037] The wire 16 is provided with a fixing part 24 at the opening 23 of the wire sheath 22, and the fixing part 24 is fixedly connected to the wire core 20 and the wire sheath 22 respectively, so that the wire core 20 located outside the wire sheath 22 and close to the opening 23 and the wire sheath 22 close to the opening 23 are fixed together, so that the part of the wire core 20 located outside the wire sheath 22 and close to the opening 23 cannot be deformed or moved relative to the wire sheath 22, thereby avoiding the wire core 20 in the wire sheath 22 from deforming or moving relative to the wire sheath 22 to produce a bulge, reducing the skin breakage caused by wear and tear caused by the friction between the bulge and the shell 18 during the extension and retraction process of the wire 16, avoiding affecting the appearance of the wire 16 due to skin breakage, and also avoiding safety hazards caused by skin breakage.

[0038] Preferably, the thickness of the wire sheath 22 is greater than 0.1mm and less than 0.5mm. Since the thinner the wire sheath 22, the longer the length of the wire 16 can be made in the same volume of the telescopic wire module, but the wire sheath 22 needs to be greater than 0.1mm. When the wire sheath 22 is produced, the wire sheath 22 will not easily break, reducing the difficulty of production. A fixing member 24 is provided at the opening 23 to fix the wire core 20 and the wire sheath 22 together, reducing the risk of the wire 16 breaking due to wear. Therefore, the thickness of the wire sheath 22 can be within 0.5mm, so as to reduce the overall volume of the wire 16 when it is wound on the reel 12, reduce the space occupied by the wire 16, and thus reduce the overall volume of the telescopic wire module 10, which is conducive to the miniaturization of the charging device 100 for portability and storage.

[0039] In one embodiment, the fixing member 24 is a fixing sleeve, which is partially fixedly mounted on the outside of the wire core 20 and partially mounted on the outside of the wire sheath 22, that is, the fixing sleeve is partially mounted on the outside of the portion of the wire core 20 near the opening 23 and fixed thereto, and is partially mounted on the outside of the portion of the wire sheath 22 near the opening 23 and fixed thereto, thereby fixing the wire core 20 and the wire sheath 22 near the opening 23 together to prevent the wire core 20 from moving or deforming inside the wire sheath 22.

[0040] It can be understood that the fixing sleeve can be formed and then put on the outside of the wire core 20 and the wire sheath 22, and then the fixing operation is performed to fix the fixing sleeve to the wire core 20 and the wire sheath 22 together. The fixing sleeve can also be formed at the opening 23 by injection molding, and the fixing sleeve is automatically fixed to the wire sheath 22 and the wire core 20 after being formed.

[0041] Along the circumference of the cable reel 12, that is, the rotation direction of the cable reel 12, the fixed sleeve is relatively fixed to the cable reel 12, and the fixed sleeve is fixedly connected to the wire core 20 and the wire sheath 22, that is, the wire 16 remains relatively fixed to the cable reel 12 at the fixed sleeve, and the distance between the fixed sleeve and the connection position between the wire core 20 and the circuit board 14 is relatively close, which increases the difficulty of the end of the wire 16 close to the circuit board 14 to move or deform relative to the circuit board 14, thereby reducing the influence of the wire 16 on the electrical connection between the wire core 20 and the circuit board 14 during the extension and retraction process.

[0042] The specific method for circumferentially securing the retaining sleeve and the cable reel 12 is not limited; they may be bonded together using glue or secured together by snapping, as long as they can achieve relative fixation. In this embodiment, the cable reel 12 is provided with a retaining groove 26, and the retaining sleeve is at least partially located within the retaining groove 26. The circumferential side surfaces of the retaining sleeve abut against the inner walls of the retaining groove 26, thereby achieving a circumferential retaining effect, maintaining the retaining sleeve and the cable reel 12 relatively fixed in the circumferential direction, and reducing the risk of the wire core 20 separating from the circuit board 14 due to expansion and contraction of the wire 16.

[0043] The cable reel 12 is provided with a cable routing groove 28. One end of the wire 16, near the connection between the wire core 20 and the circuit board 14, is passed through the cable routing groove 28. The end of the cable sheath 22 provided with the opening 23 is located within the cable routing groove 28. One end of the wire core 20 extends into the cable routing groove 28 after passing through the opening 23. A retaining groove 26 is provided on the inner wall of the cable routing groove 28 and communicates with the cable routing groove 28. By providing the cable routing groove 28 on the cable reel 12, one end of the wire 16 is passed through the cable routing groove 28. The two inner walls of the cable routing groove 28 in the radial direction of the cable reel 12 are located on opposite sides of the wire 16, thereby forming a radial retaining effect on the wire 16.

[0044] The two opposite inner walls of the cable reel 12 are respectively provided with limiting grooves 26, and the two limiting grooves 26 are arranged correspondingly. The opposite sides of the fixing sleeve are respectively located in the two limiting grooves 26, that is, the part of the fixing sleeve located on the inner side of the wire skin 22 is located in the inner limiting groove 26, and the part of the fixing sleeve located on the wire skin 22 is located in the outer limiting groove 26, so as to enhance the circumferential limiting effect of the cable reel 12 on the fixing sleeve, and ensure that the fixing sleeve and the cable reel 12 remain relatively fixed in the circumferential direction.

[0045] In another embodiment, the fixing member 24 is an adhesive, which is glued and fixed to the wire core 20 and the wire sheath 22 respectively, thereby forming a fixing effect on the wire core 20 and the wire sheath 22 at the opening 23, preventing the wire core 20 from moving or deforming inside the wire sheath 22, and reducing the risk of the wire 16 being worn and broken due to protrusions during the extension and retraction process.

[0046] In this embodiment, a glue dispensing port 30 is provided through the circuit board 14, and the location of the adhesive corresponds to the location of the glue dispensing port 30. The end of the cable sheath 22 with the opening 23 is located within the wiring groove 28, and the glue dispensing port 30 is connected to the wiring groove 28. The adhesive can be dispensed through the glue dispensing port 30 and dripped or smeared onto the wire core 20 and the cable sheath 22 near the opening 23 to secure the cable sheath 22 and the wire core 20 together at the opening 23.

[0047] In one embodiment, the end of the wire sheath 22 near the opening 23 is at least partially glued and fixed to the wire reel 12, and the glued and fixed portion is relatively close to the portion where the wire core 20 is connected to the circuit board 14, which increases the difficulty of the end of the wire 16 near the circuit board 14 to move or deform relative to the circuit board 14, thereby reducing the impact of the wire 16 on the electrical connection between the wire core 20 and the circuit board 14 during the extension and retraction process.

[0048] The specific position of gluing and fixing is not limited. For example, it can be located inside the wiring groove 28 or outside the wiring groove 28. In this embodiment, the gluing and fixing position, that is, the glue dispensing position, is close to the outlet of the wiring groove 28, that is, the end of the wiring groove 28 away from the connection between the wire core 20 and the circuit board 14. Compared with the solution in which the adhesive is in the wiring groove 28 and therefore a glue dispensing port 30 needs to be set, the glue dispensing operation at the outlet of the wiring groove 28 does not require an additional glue dispensing port 30, and the glue dispensing operation can be performed from the radial outside of the cable reel 12.

[0049] In one embodiment, the wire 16 further includes a plug 32 , and one end of the wire core 20 away from the circuit board 14 is electrically connected to the plug 32 . The plug 32 can be plugged into an electronic device to form an electrical connection, thereby charging the electronic device.

[0050] Wire 16 has a thickened portion 34 at the end of the cable sheath 22 near the plug 32. Thickened portion 34 surrounds the outer circumference of the cable sheath 22 and connects to the plug 32. Because the plug 32 needs to be plugged into an electronic device, the end of the wire 16 near the plug 32 is prone to bending during use, making it the most susceptible to cable breakage. Thickened portion 34 increases the thickness of the wire 16 near the plug 32, thereby reducing the risk of cable breakage at this location.

[0051] Preferably, the thickened portion 34 and the wire skin 22 are both soft rubber parts, and the thickened portion 34 and the wire skin 22 are integrally formed by injection molding, thereby ensuring connection strength and eliminating the assembly process.

[0052] The plug 32 includes a base and a plug-in part installed on the base. The wire core 20 is passed through the inside of the base and electrically connected to the plug-in part. The thickened part 34 is arranged on the side of the wire sheath 22 close to the base and is fixedly attached to one side of the base. The thickness of the thickened part 34 is less than the thickness of the base to reduce the abruptness of the thickened part 34.

[0053] The present invention also provides a charging device 100, including a shell 103, a charging module 105 and the above-mentioned telescopic wire module 10. The shell 18 is provided with a storage space 107. The charging module 105 and the telescopic wire module 10 are installed in the storage space 107 of the shell 103. The circuit board 14 of the charging module 105 is located in the storage space 107 and is electrically connected to the charging module 105. The end of the wire 16 away from the circuit board 14 extends to the outside of the shell 103 so as to be connected to an electronic device.

[0054] The specific type of the charging device 100 is not limited. It can be a charger that charges the electronic device with an external power supply, or it can be a mobile power supply with its own power supply. In this embodiment, the charging device 100 is a mobile power supply, and the charging module 105 includes a charging circuit board and a battery electrically connected to the charging circuit board. The circuit board 14 of the telescopic wire module 10 is electrically connected to the charging circuit board, thereby realizing the electrical connection between the wire 16 and the battery. After the wire 16 is connected to the electronic device, the battery can charge the electronic device.

[0055] The housing 103 is provided with a receiving slot 109 and a connecting hole 111 connecting the receiving space 107 and the receiving slot 109. The plug 32 is located outside the connecting hole 111 and is stored in the receiving slot 109. When the wire 16 is needed, the plug 32 can be extended out of the receiving slot 109 and the wire 16 can be pulled out. When it is not needed, the wire 16 can be retracted and wound on the reel 12, and the plug 32 can be stored in the receiving slot 109. This reduces the obtrusiveness of the plug 32 when not in use and also protects the plug 32.

[0056] Wire 16 is provided with a thickened portion 34 at one end of cable sheath 22 near plug 32. Along the thickness direction of wire 16, the distance between opposite sides of thickened portion 34 is greater than the length of connecting hole 111 and less than the distance between opposite sides of plug 32. Furthermore, along the width direction of wire 16, the distance between opposite sides of thickened portion 34 is greater than the width of connecting hole 111 and less than the distance between opposite sides of plug 32. The length of connecting hole 111 refers to the maximum diameter of connecting hole 111 along the thickness direction of wire 16, and the width of connecting hole 111 refers to the maximum diameter of connecting hole 111 along the width direction of wire 16. Since the distance between the opposite sides of the thickened portion 34 in the thickness direction and / or width direction of the wire 16 is greater than the maximum aperture of the connecting hole 111, the thickened portion 34 cannot enter the storage space 107 from the storage groove 109 through the connecting hole 111, so that the thickened portion 34 is located in the storage groove 109. The provision of the thickened portion 34 can not only reduce the risk of the wire 16 being broken at this location, but also allow a portion of the wire body composed of the wire body and the wire core 20 to remain in the storage groove 109, which can avoid the problem that the plug 32 cannot be flatly stored in the storage groove 109 and is tilted. Moreover, the thickness and / or width of the thickened portion 34 is smaller than that of the plug 32, which can reduce the abruptness of the thickened portion 34 and reduce the impact of the thickened portion 34 on the overall appearance.

[0057] In this embodiment, the wire 16 is flat, the width direction and the thickness direction of the wire 16 are perpendicular to each other, and the width of the wire 16 is greater than the thickness. When the wire 16 is in a pulled-out state, the extension direction of the wire 16 is the length direction of the wire 16. At this time, the width direction and the thickness direction of the wire 16 are respectively perpendicular to the length direction.

[0058] It should be noted that the distance between the thickened portion 34 and the opposite sides of the plug 32 refers to the maximum distance in the corresponding direction. In this embodiment, the distance between the opposite sides of the plug 32 refers to the distance between the opposite sides of the base.

[0059] Preferably, magnetic parts are provided correspondingly inside the plug 32 and the shell 103. When the magnetic part on the plug 32 is close to the magnetic part on the shell 103, the two magnetic parts will attract each other, thereby tightly adsorbing the plug 32 on the shell 103, and storing the plug 32 flatly in the storage groove 109, thereby enhancing the stability of the plug 32 in the storage state.

[0060] The above embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and replacements made by technicians in this field on the basis of the present invention fall within the scope of protection required by the present invention.

Claims

1. A telescopic line module, characterized in that: The invention comprises a winding reel, a circuit board mounted on the winding reel, and a wire wound on the winding reel, wherein the wire comprises a wire core and a wire sheath wrapped around the outside of the wire core, one end of the wire sheath forms an opening, one end of the wire core extends from the opening to the outside of the wire sheath and is electrically connected to the circuit board, and the wire is provided with a fixing part at the opening of the wire sheath, and the fixing part is fixedly connected to the wire core and the wire sheath respectively.

2. The telescopic line module according to claim 1, characterized in that: The fixing member is a fixing sleeve, and part of the fixing sleeve is fixedly arranged outside the wire core, and part of the fixing sleeve is fixedly arranged outside the wire sheath.

3. The telescopic line module according to claim 2, characterized in that: The cable reel is provided with a limiting groove, and the fixing sleeve is located in the limiting groove.

4. The telescopic line module according to claim 3, characterized in that: The cable reel is provided with a cable groove, one end of the wire close to the connection between the wire core and the circuit board is passed through the cable groove, and the limiting groove is provided on the inner wall of the cable groove.

5. The telescopic line module according to claim 4, characterized in that: The two opposite inner walls of the wiring trough are respectively provided with the limiting grooves, and the opposite two sides of the fixing sleeve are respectively located in the two limiting grooves.

6. The telescopic wire module according to claim 1, characterized in that: The fixing member is adhesive glue, and the adhesive glue is glued and fixed to the wire core and the wire sheath respectively.

7. The telescopic line module according to claim 6, characterized in that: A glue dispensing port is provided through the circuit board, and the position of the adhesive corresponds to the position of the glue dispensing port.

8. The telescopic wire module according to any one of claims 1 to 7, characterized in that: One end of the cable sheath close to the opening is at least partially glued and fixed to the cable reel.

9. The telescopic wire module according to any one of claims 1 to 7, characterized in that: The thickness of the wire sheath is greater than 0.1 mm and less than 0.5 mm.

10. The telescopic wire module according to any one of claims 1 to 7, characterized in that: The wire also includes a plug, and the end of the wire core away from the circuit board is electrically connected to the plug. The wire is provided with a thickened portion at the end of the wire sheath close to the plug, and the thickened portion surrounds the outer circumference of the wire sheath.

11. A charging device, characterized in that: It includes a shell with a storage space, a charging module arranged in the storage space, and a retractable wire module according to any one of claims 1 to 9, wherein the circuit board of the retractable wire module is located in the storage space and is electrically connected to the charging module, and the end of the wire away from the circuit board extends to the outside of the shell.

12. The charging device according to claim 11, characterized in that The wire further includes a plug connected to the side of the wire core away from the circuit board, the housing is provided with a receiving groove and a connecting hole connecting the receiving space and the receiving groove, the plug is received in the receiving groove, and the wire is provided with a thickened portion at one end of the wire sheath close to the plug, the thickened portion being located in the receiving groove; Along the thickness direction of the wire, the distance between the opposite sides of the thickened portion is greater than the length of the communicating hole and smaller than the distance between the opposite sides of the plug; and / or, along the width direction of the wire, the distance between the opposite sides of the thickened portion is greater than the width of the communicating hole and smaller than the distance between the opposite sides of the plug.

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