A telescopic charging wire module and a mobile power supply

Abstract

The utility model relates to retractable charging wire module technical field, concretely relates to a retractable charging wire module and portable power source. Retractable charging wire module includes charging wire, shell, winding carousel and rotation inductor, charging wire and winding carousel are installed in the shell, and charging wire is wound on winding carousel, rotation inductor is installed in the shell or is installed close to the shell outside the shell, and rotation inductor is used for sensing the rotation of winding carousel. The rotation inductor of the utility model can sense the rotation of winding carousel in real time to monitor the telescopic state of charging wire. When the user pulls out the charging wire, the rotation inductor can detect the extension length of winding carousel, provide real -time feedback for the user, and the user is not easy to excessively pull out the charging wire and lead to the damage of retractable charging wire module.

Description

Technical Field

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

[0002] Retractable charging cable modules are a type of charging cable that can freely extend and retract to change its length. They are currently used in power banks and charging adapters. The application of retractable charging cable modules eliminates the need for users to carry separate charging cables for electronic products, and allows the charging cable to be retracted inside the product when not in use, making storage convenient.

[0003] Current retractable charging cable modules require frequent stretching of the charging cable, making it difficult for users to perceive the length of the cable being pulled out. This can easily lead to overstretching and damage to the retractable charging cable module. Utility Model Content

[0004] This utility model provides a retractable charging cable module and a power bank to solve the problem that current retractable charging cable modules require frequent stretching of the charging cable, making it difficult for users to perceive the length of the extended charging cable, and easily leading to damage to the retractable charging cable module due to excessive stretching.

[0005] This utility model discloses a telescopic charging cable module, including a charging cable, a housing, a winding turntable, and a rotation sensor; the charging cable and the winding turntable are installed in the housing, and the charging cable is wound on the winding turntable; The rotation sensor is installed inside the housing or on the outside of the housing, close to the housing. The rotation sensor is used to sense the rotation of the winding turntable.

[0006] Optionally, the rotation sensor has a rotating roller, the rotation sensor is mounted on the outer side of the housing, the outer side of the housing has a third opening, the rotating roller passes through the third opening and abuts against the side of the winding turntable.

[0007] Optionally, the outer side of the housing is provided with a snap-fit ​​part, and the snap-fit ​​part has a snap-fit ​​groove. The telescopic charging cable module also includes a fourth circuit board, and the rotation sensor is installed on the fourth circuit board, which is snapped into the snap-fit ​​groove.

[0008] Optionally, a second latch is provided on the latching part corresponding to the latching slot, and the latch is positioned opposite to the latching slot; one side of the fourth circuit board is inserted into the latching slot and latched, and the other side of the fourth circuit board is latched on the second latch.

[0009] Optionally, a receiving cavity is provided on the snap-fit ​​part corresponding to the third opening, and the rotation sensor is installed in the receiving cavity.

[0010] Optionally, the outer shell includes an upper shell and a lower shell, with the upper shell covering the lower shell; a third opening and a snap-fit ​​part are provided on the side of the lower shell.

[0011] This utility model also discloses a portable power supply, including a housing, a battery, a circuit board, a display screen, and the aforementioned retractable charging cable module; the battery, circuit board, retractable charging cable module, and display screen are disposed inside the housing, and the battery, retractable charging cable module, and display screen are electrically connected to the circuit board; a first opening is provided on the side of the housing, and a second opening is provided on one end face of the housing adjacent to the side; the housing includes a cover plate, which covers and seals the first opening and the second opening; the cover plate has a light-transmitting area at least at the first opening, and the display screen is installed close to the light-transmitting area.

[0012] Optionally, the circuit board includes a first circuit board, and the battery, retractable charging cable module and display screen are electrically connected to the first circuit board; the retractable charging cable module is fixed on the first circuit board.

[0013] Optionally, the power bank includes a fixed bracket, on which a retractable charging cable module is mounted, and the retractable charging cable module is fixed to a first circuit board via the fixed bracket.

[0014] Alternatively, the display screen is mounted on a fixed bracket.

[0015] The beneficial effects of the telescopic charging cable module provided in this embodiment are as follows: the rotation sensor of this invention can sense the rotation of the winding turntable in real time, thereby monitoring the extension and retraction status of the charging cable. When the user pulls out the charging cable, the rotation sensor can detect the extension length of the winding turntable, providing real-time feedback to the user, making it less likely for the user to over-pull out the charging cable and damage the telescopic charging cable module. Attached Figure Description

[0016] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments. In the accompanying drawings: Figure 1 This is a schematic diagram of the retractable charging cable module according to an embodiment of this utility model; Figure 2 This is a schematic diagram of the telescopic charging cable module and the rotation sensor according to an embodiment of this utility model; Figure 3 This is a schematic diagram of the winding turntable and rotation sensor according to an embodiment of the present invention; Figure 4 This is a schematic diagram of a portable power bank according to an embodiment of the present invention; Figure 5 This is an exploded view of the portable power bank according to an embodiment of the present invention; Figure 6 This is an internal schematic diagram of the portable power bank according to an embodiment of the present invention; Figure 7 This is another schematic diagram of the internal structure of the portable power bank according to an embodiment of the present invention; Figure 8 This is a schematic diagram of the housing according to an embodiment of the present utility model; Figure 9 This is a schematic diagram of the fixed bracket, telescopic charging cable module, and display screen according to an embodiment of the present utility model; Figure 10 This is a schematic diagram of the fixed bracket and telescopic charging cable module according to an embodiment of this utility model; Figure 11 This is another schematic diagram of the fixed bracket and telescopic charging cable module of this utility model embodiment; Figure 12 This is a schematic diagram of the fixing bracket according to an embodiment of the present invention.

[0017] The labels for the attached figures are as follows: 1. Housing; 11. First opening; 12. Second opening; 13. Cover plate; 131. Receiving groove; 132. First outlet; 14. Mounting slot; 141. Fixing hole; 15. Base plate; 2. Battery; 3. Circuit board; 31. First circuit board; 32. Second circuit board; 33. Third circuit board; 4. Telescopic charging cable module; 41. Outer shell; 411. Upper shell; 412. Lower shell; 4121. Slot; 4122. Third opening; 4123. Snap-fit ​​part; 4123 1. Snap-in slot; 41232. Second snap-in; 41233. Receiving cavity; 4124. Third snap-in; 42. Winding turntable; 43. Charging cable; 431. Charging head; 5. Display screen; 6. Fixing bracket; 61. First protruding edge; 62. Mounting slot; 63. Enclosure; 64. Mounting opening; 65. First snap-in; 66. Stud; 7. First interface; 8. Second interface; 9. Battery cell fixing frame; 10. Rotation sensor; 101. Rotating roller; 20. Fourth circuit board. Detailed Implementation

[0018] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The preferred embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0019] This utility model embodiment provides a retractable charging cable module 4, such as... Figures 1 to 3 As shown, the retractable charging cable module 4 includes a charging cable 43, a housing 41, a winding turntable 42, and a rotation sensor 10. The charging cable 43 and the winding turntable 42 are installed in the housing 41, and the charging cable 43 is wound on the winding turntable 42. The rotation sensor 10 is installed inside the housing 41 or outside the housing 41 close to the housing 41, and the rotation sensor 10 is used to sense the rotation of the winding turntable 42.

[0020] The rotation sensor 10 of this invention can sense the rotation of the winding turntable 42 in real time, thereby monitoring the extension and retraction status of the charging cable 43. When the user pulls out the charging cable 43, the rotation sensor 10 can detect the extension length of the winding turntable 42, providing real-time feedback to the user, making it less likely for the user to over-pull out the charging cable and damage the retractable charging cable module.

[0021] Specifically, the rotation sensor 10 is electrically connected to the first circuit board 31 described below. In addition to displaying information such as the power supply's charge level, charging status, and usage status, the display screen 5 can also display the extension / retraction length of the charging cable 43 detected by the rotation sensor 10, allowing the user to clearly know whether the charging cable 43 has been fully extended or retracted. The rotation sensor 10 can be a rotary encoder.

[0022] Specifically, the rotation sensor 10 has a rotating roller 101, which is mounted on the outer side of the housing 41. A third opening 4122 is provided on the outer side of the housing 41, through which the rotating roller 101 passes and abuts against the side of the winding turntable 42. During the extension and retraction of the charging cable 43, the winding turntable 42 rotates. Because the rotating roller 101 directly abuts against the side of the winding turntable 42, the rotation sensor 10 can more directly sense the rotational state of the winding turntable 42. Mounting the rotation sensor 10 on the outer side of the housing 41, rather than inside, reduces the need to change the internal structure of the retractable charging cable module 4, thus saving internal space and making the internal structure more compact. This design helps optimize the overall spatial layout of the power bank, reducing the product's size and making it easier to carry.

[0023] The outer surface of the housing 41 is provided with a snap-fit ​​part 4123, and the snap-fit ​​part 4123 has a snap-fit ​​groove 41231. The retractable charging cable module 4 also includes a fourth circuit board 20. The rotation sensor 10 is mounted on the fourth circuit board 20, and the fourth circuit board 20 is snapped into the snap-fit ​​groove 41231. The snap-fit ​​groove 41231 provides a precise installation position for the fourth circuit board 20, ensuring that the rotation sensor 10 can accurately abut against the side of the winding turntable 42, reducing installation errors and improving the installation accuracy and stability of the rotation sensor 10. At the same time, the snap-fit ​​method makes the connection between the fourth circuit board 20 and the housing 41 more secure, reducing the risk of loosening or falling off due to external force or vibration. This improves the reliability of the rotation sensor 10 and ensures that it can work normally under various operating conditions. The fourth circuit board 20 is electrically connected to the first circuit board 31 through wires, conductive sheets, or soldering.

[0024] A second latch 41232 is provided on the latching part 4123 corresponding to the latching groove 41231, and the second latch 41232 is arranged opposite to the latching groove 41231. One side of the fourth circuit board 20 is inserted into the latching groove 41231 and latched, while the other side of the fourth circuit board 20 is latched onto the second latch 41232. Through the dual fixing method of the latching groove 41231 and the second latch 41232, the fourth circuit board 20 can be more firmly installed on the housing 41, reducing the risk of loosening or falling off due to external force or vibration, and improving the installation stability of the fourth circuit board 20. The cooperation of the latching groove 41231 and the second latch 41232 provides a precise installation position for the fourth circuit board 20, ensuring that the rotation sensor 10 can accurately abut against the side of the winding turntable 42. The precise installation method reduces installation errors and improves the detection accuracy and reliability of the rotation sensor 10.

[0025] A receiving cavity 41233 is provided on the snap-fit ​​part 4123 corresponding to the third opening 4122, and the rotation sensor 10 is installed in the receiving cavity 41233. The receiving cavity 41233 provides a precise installation position for the rotation sensor 10, ensuring that it can accurately abut against the side of the winding turntable 42, reducing installation errors and improving the installation accuracy and stability of the rotation sensor 10. Furthermore, the structure of the receiving cavity 41233 can provide additional protection for the rotation sensor 10, reducing the risk of loosening or damage caused by external forces or vibrations.

[0026] The outer casing 41 includes an upper casing 411 and a lower casing 412, with the upper casing 411 covering the lower casing 412. A third opening 4122 and a snap-fit ​​portion 4123 are located on the side of the lower casing 412 and are assembled with the telescopic charging cable module 4 during production. The telescopic charging cable module 4 typically has a coil spring in the central area of ​​the winding reel. The charging cable is wound on the winding reel and connected to the coil spring, which provides the retraction elasticity of the charging cable. The telescopic charging cable module 4 also has a telescopic positioning structure and an electrical connection structure electrically connected to the first circuit board 31, all of which can be implemented using conventional technologies and will not be described in detail here. The upper casing 411 and the lower casing 412 can be fastened together by a third snap-fit ​​4124.

[0027] This utility model embodiment also discloses a portable power bank, such as... Figures 4 to 8 As shown, the power bank includes a housing 1, a battery 2, a circuit board, the aforementioned retractable charging cable module 4, and a display screen 5. The battery 2, circuit board, retractable charging cable module 4, and display screen 5 are disposed inside the housing 1, and the battery 2, retractable charging cable module 4, and display screen 5 are electrically connected to the circuit board. A first opening 11 is provided on the side of the housing 1, and a second opening 12 is provided on one end face of the housing 1 adjacent to the side. The housing 1 includes a cover plate 13, which covers and seals the first opening 11 and the second opening 12. The cover plate 13 has a light-transmitting area at least at the first opening 11, and the display screen 5 is installed close to the light-transmitting area.

[0028] The cover plate 13 is provided with a receiving groove 131 and a first outlet 132 at the second opening 12. The charging cable 43 of the telescopic charging cable module 4 is led out from the first outlet 132 to the outside of the housing 1, and the charging head 431 of the charging cable 43 is accommodated in the receiving groove 131.

[0029] The power bank of this utility model has a first opening 11 and a second opening 12 on the side and the end face adjacent to the side, respectively. First, the first opening 11 and the second opening 12 are arranged adjacent to each other. Further, the housing 1 is provided with a cover plate 13, so that the cover plate 13 can simultaneously seal the first opening 11 and the second opening 12. Since the display screen 5 is located at the first opening 11, and the charging cable 43 of the retractable charging cable module 4 is led out from the first outlet 132 on the cover plate 13, and the charging head 431 of the charging cable 43 is also provided on the cover plate 13, when the cover plate 13 is sealed on the first opening 11 and the second opening 12, it can simultaneously encapsulate the retractable charging cable module 4 and the display screen 5. The overall packaging structure design of the product is relatively simple, which is conducive to production assembly and has high production efficiency.

[0030] Specifically, the first outlet 132 is located at one end of the receiving groove 131. The width and length of the receiving groove 131 are preferably sufficient to accommodate the charging head 431, which can be a Type-C plug, etc. The receiving groove 131 is located on the side of the end face of the housing 1 near the first opening 11. The light-transmitting area provided by the cover plate 13 at least at the first opening 11 ensures that the information displayed on the display screen 5 can be displayed normally through the cover plate 13. Specifically, the cover plate 13 can be made of a light-transmitting dark plastic plate, which can both block light and ensure light transmission in the display area. In order to simultaneously cover the first opening 11 and the second opening 12, the overall shape of the cover plate 13 can be set as L-shaped. The side and end face of the housing 1 are provided with an integrally connected mounting groove 14. The first opening 11 and the second opening 12 are both located in the mounting groove 14. The cover plate 13 can be fixed in the mounting groove 14 by adhesive, so as to achieve a firm seal between the first opening 11 and the second opening 12. The display screen 5 can use conventional display components such as LED screens, which will not be described in detail here. The circuit board is the component for current and signal distribution, control, and processing of the power bank. Its implementation can employ conventional methods and will not be elaborated upon here. Battery 2 can be a rechargeable battery such as a lithium-ion battery, which is the power bank's energy storage component. Battery 2 includes multiple cells, which can be bonded to the casing 1 using double-sided tape or adhesive.

[0031] Furthermore, such as Figure 6 and Figure 7As shown, the circuit board includes a first circuit board 31, to which the battery 2, retractable charging cable module 4, and display screen 5 are electrically connected; the retractable charging cable module 4 is fixed on the first circuit board 31. The battery 2, retractable charging cable module 4, and display screen 5 achieve power distribution, control, and operation through their electrical connection to the first circuit board 31. Centralizing the connection of the battery 2, retractable charging cable module 4, and display screen 5 to the first circuit board 31 achieves a high degree of integration of functional components, reduces the length and complexity of connection lines between components, lowers the risk of failure due to loose wiring or poor contact, and improves the overall stability of the power bank. The first circuit board 31 also provides a mounting position for the retractable charging cable module 4.

[0032] Specifically, the housing 1 is equipped with a cell fixing frame 9, and multiple cells are installed in the cell fixing frame 9. The cell fixing frame 9 can be installed in the housing 1 by conventional means such as screws or snap-fit ​​structures. One side of the first circuit board 31 is installed on one end face of the cell fixing frame 9 by multiple screws, and the other side is snapped into the limiting ribs in the housing 1. The housing 1 includes a base plate 15. All components inside the housing 1 are assembled backwards, and the base plate 15 is sealed at the bottom of the housing 1 by screws or glue.

[0033] Furthermore, such as Figures 9 to 12 As shown, the power bank includes a fixed bracket 6, on which a retractable charging cable module 4 is mounted. The retractable charging cable module 4 is fixed to a first circuit board 31 via the fixed bracket 6. The connection between the retractable charging cable module 4 and the first circuit board 31 via the fixed bracket 6, compared to direct fixation to the first circuit board 31, better distributes and supports the weight of the retractable charging cable module 4 and external forces during use. The fixed bracket 6 provides additional support and fixation, reducing the pulling and stress on the circuit board during frequent use (such as stretching and retracting) of the retractable charging cable module 4, thereby reducing the risk of damage to the first circuit board 31 due to external forces and improving the service life and stability of the retractable charging cable module 4. The fixed bracket 6 can be screwed onto the first circuit board 31. The fixed bracket 6 can be designed according to the size and shape of the retractable charging cable module 4 to better adapt to the layout of the first circuit board 31.

[0034] Furthermore, the fixing bracket 6 is provided with multiple studs 66 facing the edge of the first opening 11, and fixing holes 141 are opened at the edge of the first opening 11 corresponding to the multiple studs 66. The fixing bracket 6 is installed and fixed by screws onto the studs 66 and fixing holes 141. In this way, the battery cell fixing frame 9, the first circuit board 31, the telescopic charging cable module 4, the fixing bracket 6 and the outer shell 41 are fixedly connected together, improving the overall assembly firmness of the power bank.

[0035] The display screen 5 is mounted on the fixed bracket 6. Compared to direct mounting on the circuit board or other softer components, the fixed bracket 6 provides more stable support for the display screen 5, effectively reducing the shaking or displacement caused by external forces during the use of the power bank (such as movement or collisions), thereby reducing the risk of damage to the display screen 5 and extending its lifespan. The fixed bracket 6, as a stable mounting platform, ensures a more secure electrical connection between the display screen 5 and the first circuit board 31. Through the fixed bracket 6, the connection lines between the display screen 5 and the first circuit board 31 can be better fixed and protected, reducing display failures caused by loose lines or poor contact, and ensuring that the display screen 5 can display information stably. In addition, the fixed bracket 6 is used not only to mount the retractable charging cable module 4 but also to mount the display screen 5. This integrated design reduces the number of connecting parts and mounting points inside the power bank, making the overall structure simpler and more compact. Integrating multiple functional components together through the fixed bracket 6 reduces mutual interference between components, improving the stability and compactness of the overall structure.

[0036] Specifically, the display screen 5 is mounted on the side of the fixed bracket 6 facing the second opening 12, the retractable charging cable module 4 is mounted on the side of the fixed bracket 6 away from the second opening 12, and the first circuit board 31 is located on the side of the fixed bracket 6 away from the second opening 12, with the side of the fixed bracket 6 away from the second opening 12 mounted on the first circuit board 31. By mounting the display screen 5 and the retractable charging cable module 4 on opposite sides of the fixed bracket 6, the space of the fixed bracket 6 is fully utilized, mutual interference between components is avoided, and the internal structure of the power bank is made more compact. The display screen 5 faces the second opening 12 for easy viewing by the user, while the retractable charging cable module 4 and the first circuit board 31 are located on the other side of the fixed bracket 6. While meeting functional requirements, this design maximizes the use of the internal space of the housing 1, allowing the overall size of the power bank to be designed to be smaller, making it easier to carry and use.

[0037] More specifically, the mounting bracket 6, facing the second opening 12, forms a mounting groove 62 through the first protruding edge 61. The display screen 5 is installed in the mounting groove 62, and can be fixed in place by adhesive or double-sided tape. The mounting groove 62 formed by the first protruding edge 61 provides a precise installation position and fixing structure for the display screen 5. The display screen 5 can be tightly installed in the mounting groove 62, avoiding display problems or loosening caused by positional deviations, ensuring that the display screen 5 remains stable during use and will not shift due to external forces or vibrations. In addition, the mounting groove 62 provides a clear installation position for the display screen 5, allowing assembly personnel to quickly install the display screen 5 onto the mounting bracket 6, reducing positioning and adjustment time during assembly, simplifying the assembly process, and improving production efficiency. The structure of the mounting groove 62 also ensures the accuracy of the display screen 5 during installation, reducing assembly errors caused by manual operation.

[0038] Furthermore, a surrounding plate 63 is provided on the side edge of the fixed bracket 6 away from the second opening 12. The surrounding plate 63 encloses a mounting cavity 64 on the fixed bracket 6, in which the retractable charging cable module 4 is installed. The surrounding plates 63 can be continuously arranged or spaced out, without specific limitations. The mounting cavity 64 provides a precise installation position and a stable limiting support structure for the retractable charging cable module 4. The retractable charging cable module 4 can be tightly installed in the cavity, avoiding usage problems caused by positional deviation or looseness, ensuring that the retractable charging cable module 4 remains stable during frequent use and will not shift or be damaged due to external forces or vibrations. The mounting cavity 64 enclosed by the surrounding plate 63 also provides additional protection for the retractable charging cable module 4, preventing it from being subjected to external impacts or collisions during the use of the power bank. In addition, the mounting cavity 64 provides a clear installation position for the retractable charging cable module 4, allowing assemblers to quickly install it onto the fixed bracket 6. This reduces positioning and adjustment time during assembly, simplifies the assembly process, and improves production efficiency. The structure of the mounting cavity 64 also ensures the accuracy of the retractable charging cable module 4 during installation, reducing assembly errors caused by manual operation.

[0039] A first buckle 65 is provided on the edge of the fixed bracket 6 away from the second opening 12. The retractable charging cable module 4 includes a housing 41, and a slot 4121 is provided on the side of the housing 41. The first buckle 65 is fastened in the slot 4121. The engagement of the first buckle 65 and the slot 4121 is quick and reliable, allowing the retractable charging cable module 4 to be quickly installed on the fixed bracket 6 and also easy to disassemble. In the production assembly and maintenance process, quick fixing and disassembly can significantly improve efficiency. The tight engagement of the first buckle 65 and the slot 4121 ensures the stability of the retractable charging cable module 4 on the fixed bracket 6. During use, the retractable charging cable module 4 is not easily loosened or displaced by external force or vibration, thereby improving the overall stability and reliability of the product. Specifically, multiple first buckles and slots are provided. The first buckle 65 can be integrally connected with the enclosure 63 or set independently of the enclosure 63.

[0040] Furthermore, the circuit board includes a second circuit board 32 and a third circuit board 33. The third circuit board 33 is located on the side of the first circuit board 31 opposite to the second opening 12, and is arranged parallel to the first circuit board 31. The second circuit board 32 is vertically arranged between the first circuit board 31 and the third circuit board 33 and is electrically connected to both the first circuit board 31 and the third circuit board 33. By dividing the circuit board 3 into the first circuit board 31, the second circuit board 32, and the third circuit board 33, a clearer functional partitioning can be achieved. For example, the first circuit board 31 can be mainly responsible for power management and control functions, the third circuit board 33 can be used for other auxiliary functions (such as charging management, protection circuits, etc.), and the second circuit board 32 can serve as a bridge for connection and signal transmission. This partitioning design makes the circuit layout clearer and facilitates design and maintenance. The second circuit board 32 is vertically arranged between the first circuit board 31 and the third circuit board 33. This three-dimensional layout can effectively utilize the three-dimensional space inside the power bank, reduce the overall volume, and make the product more compact. At the same time, this layout can also reduce signal interference between circuit boards and improve circuit reliability.

[0041] The second circuit board 32 can be inserted into the first circuit board 31 and the third circuit board 33. The third circuit board 33 can be snapped or screwed into the inside of the housing 1, or one side can be screwed into the end face of the battery cell frame and the other side can be snapped into the inside of the housing 1 to achieve a firm assembly of the overall structure of the power bank.

[0042] A first interface 7 is provided on the side of the first circuit board 31 facing the third circuit board 33, and a second interface 8 is provided on the side of the third circuit board 33 facing the first circuit board 31. The first and second interfaces 8 are exposed in the area corresponding to the cover plate 13 and the second opening 12. By placing the first interface 7 and the second interface 8 on opposite sides of the first and third circuit boards 31 and exposing them in the area corresponding to the cover plate 13 and the second opening 12, all interfaces are concentrated in one area. This design reduces the time users spend searching for interfaces during use, improving ease of use. The centralized layout of interfaces makes it easier for users to connect and disconnect charging cables or other devices, enhancing the user experience. In particular, placing interfaces on the side or end of the power bank conforms to user habits and facilitates one-handed operation. Specifically, the first interface 7 is a Type-C interface, and the second interface 8 is a USB-A interface.

[0043] It should be understood that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Those skilled in the art can modify the technical solutions described in the above embodiments, or make equivalent substitutions for some of the technical features; and all such modifications and substitutions should fall within the protection scope of the appended claims of this utility model.

Claims

1. A retractable charging cable module, characterized in that, The device includes a charging cable, a housing, a winding turntable, and a rotation sensor; the charging cable and the winding turntable are installed in the housing, and the charging cable is wound on the winding turntable. The rotation sensor is installed inside the housing or outside the housing near the housing, and the rotation sensor is used to sense the rotation of the winding turntable.

2. The retractable charging cable module according to claim 1, characterized in that, The rotation sensor has a rotating roller and is installed on the outer side of the housing. The outer side of the housing has a third opening, and the rotating roller passes through the third opening and abuts against the side of the winding turntable.

3. The retractable charging cable module according to claim 2, characterized in that, The outer side of the housing is provided with a snap-fit ​​part, and the snap-fit ​​part has a snap-fit ​​groove. The telescopic charging cable module also includes a fourth circuit board. The rotation sensor is installed on the fourth circuit board, and the fourth circuit board is snapped into the snap-fit ​​groove.

4. The retractable charging cable module according to claim 3, characterized in that, A second buckle is provided on the snap-fit ​​part corresponding to the snap-fit ​​groove, and the buckle is disposed opposite to the snap-fit ​​groove; one side of the fourth circuit board is inserted into the snap-fit ​​groove and snapped in place, and the other side of the fourth circuit board is snapped in place on the second buckle.

5. The retractable charging cable module according to claim 3, characterized in that, A receiving cavity is provided on the snap-fit ​​part corresponding to the third opening, and the rotation sensor is installed in the receiving cavity.

6. The retractable charging cable module according to claim 2, characterized in that, The outer shell includes an upper shell and a lower shell, with the upper shell covering the lower shell; the third opening and snap-fit ​​part are provided on the side of the lower shell.

7. A portable power bank, characterized in that, The device includes a housing, a battery, a circuit board, a display screen, and a retractable charging cable module as described in any one of claims 1 to 6; the battery, circuit board, retractable charging cable module, and display screen are disposed within the housing, and the battery, retractable charging cable module, and display screen are electrically connected to the circuit board; a first opening is provided on the side of the housing, and a second opening is provided on one end face of the housing adjacent to the side; the housing includes a cover plate, the cover plate covering and sealing the first opening and the second opening; the cover plate has a light-transmitting area at least at the first opening, and the display screen is mounted close to the light-transmitting area.

8. The portable power bank according to claim 7, characterized in that, The circuit board includes a first circuit board, and the battery, the retractable charging cable module and the display screen are electrically connected to the first circuit board; the retractable charging cable module is fixed on the first circuit board.

9. The portable power bank according to claim 8, characterized in that, The power bank includes a fixed bracket, and the retractable charging cable module is mounted on the fixed bracket. The retractable charging cable module is fixed to the first circuit board by the fixed bracket.

10. The portable power bank according to claim 9, characterized in that, The display screen is mounted on the fixed bracket.

Images