Charging wire winding mechanism and mobile power supply

Abstract

The invention provides a charging wire winding mechanism and a mobile power source, and relates to the field of mobile power sources, the charging wire winding mechanism comprises a rotating disc and a driving mechanism which are located in a mobile power source shell, the rotating disc is provided with a wire groove used for winding or releasing a wire body, and a transmission state and an unlocking state exist between the driving mechanism and the rotating disc; when the wire body is pulled by external force, the turntable and the driving mechanism are in an unlocking state, and the turntable is rotatably arranged in the shell, so that the wire body is released; when the wire body is recycled, the driving mechanism and the rotating disc are in a transmission state, and the driving mechanism can drive the rotating disc to rotate to the initial position according to working parameters of the rotating disc. When the wire body needs to be recycled, the driving mechanism can drive the rotating disc to rotate to the initial position according to working parameters of the rotating disc, specifically the rotating angle of the rotating disc, structures such as a coil spring do not need to be arranged for driving rapid rewinding, the structure is simple, the winding process can be simplified, operation is smooth, maintenance is easy and convenient, and reliability is high.

Description

Technical Field

[0001] This invention relates to the field of portable power bank technology, and in particular to a charging cable winding mechanism and a portable power bank. Background Technology

[0002] In the field of portable electronic devices, power banks are common external power supply devices, and the management of their internal cables is crucial to the user experience.

[0003] In existing technologies, some power banks use mechanical coil springs or clutch mechanisms as winding methods, and achieve automatic cable retraction through spring energy storage or gear meshing, in order to achieve a balance between rapid rewinding, cable protection and ease of operation.

[0004] The applicant has discovered at least the following technical problems with the existing technology: In practical applications, it has been found that such charging cable winding mechanisms have significant shortcomings. When the user pulls the cable with external force, the mechanical coil spring structure must rely on precise locking components and stop devices to prevent the cable from springing back. This results in a large number of internal parts and high assembly precision requirements, making it prone to jamming during operation. This not only reduces the smoothness of the pulling action but also significantly affects the user's tactile experience. Furthermore, due to the complexity of the locking and stop structures, the frictional resistance between components is high, leading to increased wear and tear and a higher failure rate after long-term use. To maintain basic operation, frequent addition of grease is often necessary to reduce friction, which not only increases the maintenance burden but may also cause grease leakage and contaminate the internal components, further hindering use. These defects make it difficult for existing charging cable winding mechanisms to meet the demands of modern power banks for high efficiency, stability, and user-friendliness in terms of reliability, operational comfort, and ease of maintenance. Summary of the Invention

[0005] The purpose of this invention is to provide a charging cable winding mechanism and a power bank, to solve the technical problems of complex structure, easy jamming, and inconvenience in use of existing power bank charging cable winding mechanisms. The various technical effects of the preferred solutions among the many technical solutions provided by this invention are detailed below.

[0006] To achieve the above objectives, the present invention provides the following technical solution: The charging cable winding mechanism provided by the present invention includes a turntable and a drive mechanism located inside the power bank housing, wherein: The turntable is provided with a wire groove for winding or unwinding the wire, and the drive mechanism has a transmission state and an unlocking state with the turntable; When the thread is pulled by an external force, the turntable and the drive mechanism are in an unlocked state. The turntable is rotatable within the housing, thereby releasing the thread. When the retracting line is in operation, the drive mechanism and the turntable are in a transmission state. The drive mechanism can drive the turntable to rotate back to the initial position according to the working parameters of the turntable.

[0007] Preferably, the charging cable winding mechanism further includes: Limit switches are used to detect the rotation parameters of the turntable; The control unit is electrically connected to the limit switch and the drive mechanism. It is used to calculate the release length of the line based on the rotation parameters of the turntable, and control the drive mechanism to operate based on the release length of the line until the drive mechanism drives the turntable to rotate back to the initial state.

[0008] Preferably, a toothed ring is fixedly provided on the turntable, the toothed ring protruding from the surface of the turntable, the limit switch is fixed on the housing, and the detection end of the limit switch is located on the rotation path of the teeth of the toothed ring. When the turntable rotates, all the teeth of the toothed ring can trigger the limit switch.

[0009] Preferably, the gear ring has a ring structure around the central axis of the turntable, and the teeth on the gear ring are evenly spaced around the central axis of the turntable.

[0010] Preferably, the drive mechanism includes a motor and a drive wheel, wherein: The drive wheel is connected to the turntable via a transmission. When the drive wheel rotates forward under the drive of the turntable, the drive wheel is in an unlocked state from the motor. When the output shaft of the motor rotates in the reverse direction, the motor is connected to the drive wheel, thereby driving the turntable to rotate.

[0011] Preferably, the turntable is provided with a toothed groove, the inner contour of which matches the outer contour of the drive tooth, and the drive tooth extends into the toothed groove so as to rotate synchronously with the turntable.

[0012] Preferably, the drive mechanism further includes a gearbox, which contains a shaft gear, a one-way ratchet, and an output gear, wherein: The shaft gear is fixed on the output shaft of the motor. The shaft gear, the one-way ratchet, and the output gear can only mesh and transmit power along the direction of the turntable recovery line. The output gear and the drive wheel are fixedly connected by a shaft.

[0013] Preferably, the turntable has a shaft cavity, the drive mechanism extends into the shaft cavity, and the tooth groove is disposed at the closed end of the shaft cavity.

[0014] The present invention also provides a power bank, including a housing, a cable with a charging connector, and the above-mentioned charging cable winding mechanism. The housing is provided with a cable outlet, and at least one end of the charging connector and the cable connected to the charging connector extends out of the cable outlet.

[0015] Preferably, the housing includes an upper shell and a lower shell, which are detachably connected and spliced ​​together to form the cable outlet.

[0016] The charging cable winding mechanism and power bank provided by this invention have the following advantages compared with the prior art: When the cable needs to be pulled out, the turntable rotates under the action of tension to release the cable. At this time, the drive mechanism and the turntable are in an unlocked state, and the drive mechanism does not affect the rotation of the turntable; When the cable needs to be retracted, the drive mechanism can drive the turntable to rotate back to the initial position according to the working parameters of the turntable, specifically according to the rotation angle of the turntable. There is no need to set up a coil spring or other structure to drive rapid rewinding. The structure is simple, which can simplify the winding process, and the operation is smooth, the maintenance is simple, and the reliability is high. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, 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 the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of the power bank; Figure 2 This is a schematic diagram of the exploded structure of a power bank; Figure 3 This is a structural diagram of the turntable and drive mechanism from one perspective of their exploded structure. Figure 4 This is a structural diagram of the turntable and drive mechanism from another perspective. Figure 5 This is a schematic diagram of the structure of the limit switch and the turntable working together; Figure 6 This is a schematic diagram of the drive mechanism.

[0019] In the diagram: 1. Turntable; 11. Wire groove; 12. Gear ring; 13. Gear groove; 14. Shaft cavity; 2. Drive mechanism; 21. Motor; 22. Drive wheel; 23. Gearbox; 24. Shaft gear; 25. Output gear; 26. One-way ratchet; 27. Shaft; 3. Wire body; 31. Charging connector; 4. Limit switch; 5. Upper shell; 6. Lower shell; 7. Cable outlet; 8. Screw; 91. First PCB; 92. Second PCB. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be described in detail below. Obviously, the described embodiments are merely some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0021] In the description of this invention, it should be understood that the terms "center," "length," "width," "height," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and "side," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0022] Traditional power bank charging cable winding mechanisms mostly use mechanical coil springs or clutch mechanisms to achieve automatic cable winding. However, these solutions often require complex locking and stopping structures when pulling the cable, resulting in complex component operation, a tendency to jam, and an impact on the user's feel. In addition, these structures are prone to damage, have high friction, require frequent lubrication, and are inconvenient to use and maintain.

[0023] In view of the above problems, embodiments of the present invention provide a charging cable winding mechanism and a power bank, which have a simple structure, can simplify the winding process, are easy to operate and maintain, and have high reliability.

[0024] The following is combined with Figures 1-6 The technical solution provided by this invention will be described in more detail below.

[0025] Example 1: See Figures 1-6 The charging cable winding mechanism provided by the present invention includes a turntable 1 and a drive mechanism 2 located inside the power bank housing. The turntable 1 is provided with a cable groove 11 for winding or unwinding the cable 3. The drive mechanism 2 and the turntable 1 have a transmission state and an unlocked state. When the cable 3 is pulled by an external force, the turntable 1 and the drive mechanism 2 are in the unlocked state. The turntable 1 is rotatably set inside the housing, thereby releasing the cable 3. When the cable 3 is wound up, the drive mechanism 2 and the turntable 1 are in the transmission state. The drive mechanism 2 can drive the turntable 1 to rotate back to the initial position according to the working parameters of the turntable 1.

[0026] Among them, the aforementioned wire 3 refers to a flexible wire with a charging connector 31 or data transmission function.

[0027] The initial position refers to the position where the yarn 3 is completely wound on the turntable 1 and the turntable 1 is in a preset starting state, which is usually the position when the yarn 3 has not been pulled.

[0028] Working parameters refer to the measurable data generated by the turntable 1 during rotation, such as rotation speed, rotation angle, number of rotations, etc. These parameters can be used to determine the release length of the line 3 or the position of the turntable 1.

[0029] The charging cable winding mechanism of this embodiment, by setting up a drive mechanism 2 and a turntable 1 with transmission and unlocking states, allows the drive mechanism 2 and turntable 1 to be in the unlocked state when the cable 3 is pulled by external force, enabling the cable 3 to be released smoothly and avoiding the complex locking and stopping structures of traditional solutions. When the cable 3 is retracted, the drive mechanism 2 and turntable 1 are in the transmission state, and the turntable 1 is driven to rotate back to its initial position according to its working parameters, realizing the automatic retraction of the cable 3. Therefore, this charging cable winding mechanism simplifies the mechanical structure, reduces the possibility of jamming, improves the smoothness and feel of user operation, reduces component wear and lubrication requirements, and improves the reliability and ease of use of the mechanism.

[0030] The charging cable winding mechanism can drive the turntable 1 to rotate back to the initial position via the drive mechanism 2 to retract the cable 3. However, in practical applications, how to accurately obtain the rotation parameters of the turntable 1 and accurately control the drive mechanism 2 based on these parameters to ensure that the cable 3 can be completely and properly retracted to the initial state has become an urgent problem to be solved.

[0031] To address the aforementioned issues, the charging cable winding mechanism of this embodiment further includes: a limit switch 4 for detecting the rotation parameters of the turntable 1; and a control unit, which is electrically connected to both the limit switch 4 and the drive mechanism 2, for calculating the release length of the cable 3 based on the rotation parameters of the turntable 1, and controlling the drive mechanism 2 to operate based on the release length of the cable 3 until the drive mechanism 2 drives the turntable 1 to rotate back to its initial state.

[0032] The limit switch 4 is a sensor used to detect the position or travel of the moving mechanical parts. When the moving parts reach a preset position, it triggers the switch and outputs an electrical signal. The limit switch 4 can be implemented in various forms. For example, it can be a mechanical limit switch, triggered by physical contact; it can be a photoelectric limit switch, triggered by the blocking or reflection of a light beam; or it can be a Hall effect sensor, triggered by changes in a magnetic field. Its core function is to monitor the rotation state of the turntable 1 in real time, such as the number of rotations, direction, or specific position, and convert these rotation parameters into electrical signals for output. The control unit receives the electrical signals from the limit switch 4, calculates the release length of the line 3 according to a preset algorithm, and sends start, stop, or reverse control commands to the drive mechanism 2 based on the calculation results.

[0033] In this embodiment, when the cable 3 is pulled out, the limit switch 4 monitors the rotation of the turntable 1 in real time and feeds back the rotation parameters to the control unit. Based on these parameters, the control unit can accurately calculate the actual release length of the cable 3. When retracting the cable 3, the control unit precisely controls the drive mechanism 2 to drive the turntable 1 to rotate in the opposite direction according to the known release length. This closed-loop control method ensures that the drive mechanism 2 can drive the turntable 1 to rotate exactly back to the initial position where the cable 3 is fully retracted, avoiding the problem of incomplete or over-tightened cable 3 retraction. This not only improves the accuracy and reliability of cable 3 retraction and extends the service life of the cable 3 and the charging cable winding mechanism, but also greatly enhances the user's convenience and experience.

[0034] As an alternative implementation, see [link to implementation details]. Figure 5 As shown, a toothed ring 12 is fixedly installed on the turntable 1. The toothed ring 12 protrudes from the surface of the turntable 1. The limit switch 4 is fixed on the housing. The detection end of the limit switch 4 is located on the rotation path of the teeth of the toothed ring 12. When the turntable 1 rotates, the teeth of the toothed ring 12 can all trigger the limit switch 4.

[0035] The gear ring is a ring-shaped structure with evenly distributed teeth, which is firmly mounted on the turntable 1. It can be integrally formed with the turntable 1, or it can be manufactured separately and fixed by riveting, welding, or bonding. The tooth design of the gear ring is intended to provide a series of detectable discrete points for accurately marking the rotation of the turntable 1. In this embodiment, the limit switch 4 can be an Omron limit switch of model D4N-4A32.

[0036] See Figure 2Inside the housing (upper shell 5), a first PCB 91 is fixed, on which the aforementioned limit switch 4 is installed. A second PCB 92 is fixed on the turntable 1. A connector is soldered onto the second PCB 92 using surface mount technology. The metal springs on the connector engage with the track of the first PCB 91. The track surface on the first PCB 91 is gold-plated to achieve the function of conducting the upper and lower circuits. When the cable 3 is pulled out, the turntable 1 rotates, and the limit switch 4 and the gear ring 12 on the turntable 1 move relative to each other. The lever of the limit switch 4 will generate an OPEN / CLOSE signal. The chip of the control unit records the rotation angle. Since the radius of the turntable 1 is known, the rotation angle of the turntable 1 and the release length of the cable 3 can be calculated based on the number of recorded signals from the limit switch 4.

[0037] When retracting the cable 3, the control unit can precisely control the drive mechanism 2 to drive the turntable 1 in reverse according to the preset pulse count or the number of pulses detected in real time, until the pulse count corresponding to the initial position is reached, thereby significantly improving the measurement accuracy of the release length of the cable 3 and the accuracy and reliability of the return control of the charging cable winding mechanism.

[0038] As an alternative implementation, see [link to implementation details]. Figure 5 The gear ring 12 has a ring structure around the central axis of the turntable 1, and the teeth on the gear ring 12 are evenly spaced around the central axis of the turntable 1.

[0039] The gear ring has a ring-shaped structure, and its central axis coincides with the central axis of the turntable 1. This concentric ring arrangement ensures that all parts of the gear ring move around the rotation center of the turntable 1 with the same radial distance as the turntable 1 rotates. This provides a stable and predictable detection path for the detection end of the limit switch 4. Regardless of the rotation angle of the turntable 1, the relative positional relationship between the gear ring and the limit switch 4 remains consistent, thus avoiding detection errors caused by eccentricity or irregular shapes. Furthermore, the teeth on the gear ring are evenly distributed along the circumference of the ring structure. This uniformly spaced arrangement ensures that the rotation angle of the turntable 1 or the release length of the line 3 represented by each tooth activating the limit switch 4 is a constant value. For example, if the gear ring has N teeth, then each time a tooth activates the limit switch 4, the turntable 1 rotates 360 / N degrees. This precise and quantifiable unit of rotation provides reliable basic data for the control unit to accurately calculate the release length of the line 3, greatly improving the accuracy and consistency of the detection.

[0040] As an alternative implementation, see [link to implementation details]. Figures 1-4As shown, the drive mechanism 2 in this embodiment includes a motor 21 and a drive wheel 22. The drive wheel 22 is connected to the turntable 1 via a transmission connection. When the drive wheel 22 rotates forward under the drive of the turntable 1, the drive wheel 22 is in an unlocked state from the motor 21. When the output shaft of the motor 21 rotates in the reverse direction, the motor 21 is connected to the drive wheel 22 via a transmission connection, thereby driving the turntable 1 to rotate. The motor 21 can be a miniature DC motor or a stepper motor, and its output shaft is connected to the drive wheel 22 via a transmission connection to provide suitable speed and torque.

[0041] When the drive wheel 22 rotates forward under the drive of the turntable 1, the drive wheel 22 is in an unlocked state from the motor 21. This state corresponds to when the cable 3 is released by an external force. The unlocked state ensures that the turntable 1 can rotate freely when releasing the cable 3 without being obstructed by the motor 21, thus avoiding additional friction or resistance and ensuring that the cable 3 is smoothly pulled out. The unlocking mechanism can be a one-way clutch, a ratchet and pawl mechanism, etc.

[0042] When the output shaft of motor 21 rotates in the reverse direction, motor 21 is connected to drive wheel 22, thereby driving turntable 1 to rotate. This state corresponds to the winding of the cable 3. The transmission connection ensures that the power of motor 21 can be effectively transmitted to drive wheel 22, thereby driving turntable 1 to rotate in the reverse direction and winding the cable 3 back.

[0043] As an optional implementation method, combined with Figure 3 and Figure 4 As shown, the turntable 1 is provided with a toothed groove 13. The inner contour of the toothed groove 13 matches the outer contour of the drive tooth. The drive tooth extends into the toothed groove 13 and rotates synchronously with the turntable 1.

[0044] A toothed groove 13 is provided within the turntable 1, and the inner contour of the toothed groove 13 precisely matches the outer contour of the drive tooth. When the drive tooth extends into the toothed groove 13, the two form a stable mechanical mesh. Compared with simple friction transmission, this meshing transmission method can significantly improve the reliability and stability of the transmission connection between the drive wheel 22 and the turntable 1, effectively avoiding slippage that may occur during the cable retraction process. The drive mechanism 2 can drive the turntable 1 to rotate synchronously more precisely and stably, ensuring that the cable 3 can be smoothly and accurately retracted to the initial position, thereby improving the overall working efficiency and user experience of the charging cable rewinding mechanism.

[0045] As an alternative implementation, see [link to implementation details]. Figure 3 and Figure 5 , Figure 6As shown, the drive mechanism 2 also includes a gearbox 23, which contains a shaft gear 24, a one-way ratchet 26, and an output gear 25. The shaft gear 24 is fixed on the output shaft of the motor 21. The shaft gear 24, the one-way ratchet 26, and the output gear 25 can only mesh and transmit power along the direction of the turntable 1 and the reel 3. The output gear 25 is fixedly connected to the drive wheel 22 via a shaft 27.

[0046] The shaft gear 24 is firmly fixed to the output shaft of the motor 21, and the rotational motion of the motor 21 is directly transmitted to the shaft gear 24. The shaft gear 24, the one-way ratchet 26, and the output gear 25 can only mesh and transmit power in the direction of the turntable 1 to retract the cable 3. That is, when the cable 3 is pulled out by an external force, although the drive teeth rotate synchronously with the turntable 1, the shaft gear 24, the one-way ratchet 26, and the output gear 25 are not in a transmission state at this time, and a damping sound of "clicking" can be heard. The drive mechanism 2 does not affect the normal rotation of the turntable 1, thereby ensuring the normal release of the cable 3.

[0047] When it is necessary to retract the cable 3, the shaft gear 24, the one-way ratchet 26, and the output gear 25 mesh together, transmitting power from the motor 21 to the shaft gear 24, the one-way ratchet 26, and the output gear 25 in sequence. Since the output gear 25 is fixed to the drive wheel 22 via the shaft 27, the drive gear can rotate under the drive of the motor 21, thereby realizing the rotation of the turntable 1. This ensures that the drive mechanism 2 only transmits power when it is necessary to retract the cable 3, and does not prevent the turntable 1 from rotating when releasing the cable 3.

[0048] As an alternative implementation, see [link to implementation details]. Figure 4 The turntable 1 has a shaft cavity 14, the drive mechanism 2 extends into the shaft cavity 14, and the tooth groove 13 is provided at the closed end of the shaft cavity 14.

[0049] By placing the drive mechanism 2 inside the shaft cavity 14 of the turntable 1 and positioning the toothed groove 13 at the closed end of the shaft cavity 14, a high degree of integration and compactness of the charging cable winding mechanism is achieved. This internally housed structure significantly reduces the external space occupied by the drive mechanism 2, thereby optimizing the overall volume of the charging cable winding mechanism and contributing to the miniaturization of the power bank as a whole.

[0050] Meanwhile, since the key transmission components of the drive mechanism 2 are enclosed by the shaft cavity 14 and the turntable 1 body, they are effectively physically protected, avoiding potential damage to the transmission mechanism caused by external dust, foreign objects, or accidental collisions, thereby improving the stability and reliability of the transmission connection. In addition, the tooth groove 13 is located at the closed end of the shaft cavity 14, providing a more stable and precise support for the meshing of the drive mechanism 2 and the turntable 1, further ensuring the smoothness and efficiency of the transmission during the recycling process of the line 3.

[0051] The working principle of the charging cable winding mechanism in this embodiment is explained in further detail below: When the user needs to use the charging cable 3, they pull it out with external force. At this time, the turntable 1 of the charging cable winding mechanism is unlocked from the drive mechanism 2. The turntable 1 rotates inside the power bank housing, thus smoothly releasing the cable 3. This structure avoids the complex mechanical locking and stopping structures required in the prior art during the pulling process, improving the smoothness of operation, reducing jamming, and improving the user's feel.

[0052] As turntable 1 rotates to release cable 3, a gear ring fixedly mounted on turntable 1 rotates accordingly. Each rotation of turntable 1 triggers limit switch 4, generating a signal. These signals are received by a control unit electrically connected to limit switch 4. Based on the received signals, the control unit accurately calculates the release length of cable 3.

[0053] When the user finishes charging and needs to retract the cable 3, motor 21 is activated. The control unit sends a command to drive mechanism 2 based on the previously calculated release length of cable 3. At this time, drive mechanism 2 and turntable 1 enter a transmission state. The output shaft of motor 21 rotates in the reverse direction, transmitting power to drive wheel 22. Drive wheel 22 rotates synchronously with turntable 1. Driven by motor 21, drive wheel 22 rotates in the reverse direction, thereby driving turntable 1 to rotate back, winding and retracting cable 3 to its initial position. The control unit continuously monitors the signal from limit switch 4 to ensure that drive mechanism 2 accurately drives turntable 1 back to the preset initial state.

[0054] This electrically controlled drive mechanism enables precise control of the cable winding process, avoiding the problems associated with mechanical coil springs or clutch mechanisms in existing technologies, such as complex operation, susceptibility to damage, high friction, and the need for large amounts of lubricant. The entire winding process is smooth and reliable, eliminating the need for users to operate complex locking or stopping mechanisms, thus improving the convenience and durability of the power bank.

[0055] Example 2: See Figure 1 and Figure 2 As shown, this embodiment provides a mobile power supply, including a housing, a cable 3 with a charging connector 31, and the aforementioned charging cable winding mechanism. The housing is provided with a cable outlet 7, and at least one end of the cable 3 connected to the charging connector 31 extends out of the cable outlet 7.

[0056] When the power bank pulls out the cable 3, the turntable 1 rotates freely, releasing the cable 3. When retracting the cable 3, the drive mechanism 2 automatically drives the turntable 1 to reset according to its operating parameters, avoiding the tedious manual adjustment. Overall, the above structure significantly improves the operational reliability and user experience of the charging cable winding mechanism, while reducing component wear and lubrication requirements, providing a more convenient solution for the daily use of the power bank.

[0057] As an alternative implementation, see [link to implementation details]. Figure 1 and Figure 2 As shown, the housing includes an upper shell 5 and a lower shell 6. The upper shell 5 and the lower shell 6 are detachably connected and spliced ​​together to form an outlet 7.

[0058] The casing of a power bank typically protects internal components such as circuitry, batteries, and charging cable winding mechanisms, and provides an external interface. Designing the casing as two parts, an upper shell 5 and a lower shell 6, effectively simplifies the assembly process of the internal components. The upper shell 5 and lower shell 6 can be manufactured using processes such as injection molding, and their materials are typically plastic or metal alloys, balancing strength, weight, and cost.

[0059] The specific connection methods between the upper shell 5 and the lower shell 6 may include, but are not limited to: screw fixing, where the upper shell 5 and the lower shell 6 are fastened together by using screws 8 through studs or screw holes provided inside the shell; snap-fit ​​connection, where interlocking snap-fit ​​structures are designed on the edge or inside of the shell, allowing for quick assembly and disassembly by pressing or sliding; and magnetic connection, where magnets are embedded inside the shell, using magnetic force to attract the two parts together. These connection methods are all designed to provide sufficient structural stability while ensuring that the shell can be easily opened when necessary.

[0060] The specific features, structures, or characteristics described in this specification may be combined in any suitable manner in one or more embodiments or examples.

[0061] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0062] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A charging cable winding mechanism, characterized in that, Includes a turntable and drive mechanism located inside the power bank housing, wherein: The turntable is provided with a wire groove for winding or unwinding the wire, and the drive mechanism has a transmission state and an unlocking state with the turntable; When the thread is pulled by an external force, the turntable and the drive mechanism are in an unlocked state. The turntable is rotatable within the housing, thereby releasing the thread. When the retracting line is in operation, the drive mechanism and the turntable are in a transmission state. The drive mechanism can drive the turntable to rotate back to the initial position according to the working parameters of the turntable.

2. The charging cable winding mechanism according to claim 1, characterized in that, The charging cable winding mechanism also includes: Limit switches are used to detect the rotation parameters of the turntable; The control unit is electrically connected to the limit switch and the drive mechanism. It is used to calculate the release length of the line based on the rotation parameters of the turntable, and control the drive mechanism to operate based on the release length of the line until the drive mechanism drives the turntable to rotate back to the initial state.

3. The charging cable winding mechanism according to claim 2, characterized in that, A toothed ring is fixedly installed on the turntable, and the toothed ring protrudes from the surface of the turntable. The limit switch is fixed on the housing, and the detection end of the limit switch is located on the rotation path of the teeth of the toothed ring. When the turntable rotates, all the teeth of the toothed ring can touch the limit switch.

4. The charging cable winding mechanism according to claim 3, characterized in that, The gear ring has a ring structure around the central axis of the turntable, and the teeth on the gear ring are evenly spaced around the central axis of the turntable.

5. The charging cable winding mechanism according to claim 1, characterized in that, The drive mechanism includes a motor and a drive wheel, wherein: The drive wheel is connected to the turntable via a transmission. When the drive wheel rotates forward under the drive of the turntable, the drive wheel is in an unlocked state from the motor. When the output shaft of the motor rotates in the reverse direction, the motor is connected to the drive wheel, thereby driving the turntable to rotate.

6. The charging cable winding mechanism according to claim 5, characterized in that, The turntable is provided with a toothed groove, the inner contour of which matches the outer contour of the drive tooth. The drive tooth extends into the toothed groove, thereby rotating synchronously with the turntable.

7. The charging cable winding mechanism according to claim 5, characterized in that, The drive mechanism further includes a gearbox, which contains a shaft gear, a one-way ratchet, and an output gear, wherein: The shaft gear is fixed on the output shaft of the motor. The shaft gear, the one-way ratchet, and the output gear can only mesh and transmit power along the direction of the turntable recovery line. The output gear and the drive wheel are fixedly connected by a shaft.

8. The charging cable winding mechanism according to claim 6, characterized in that, The turntable has a shaft cavity, the drive mechanism extends into the shaft cavity, and the tooth groove is provided at the closed end of the shaft cavity.

9. A portable power bank, characterized in that, The device includes a housing, a cable with a charging connector, and a charging cable winding mechanism as described in any one of claims 1-8. The housing has a cable outlet, and at least one end of the charging connector and the cable connected to the charging connector extends out of the cable outlet.

10. The portable power bank according to claim 9, characterized in that, The housing includes an upper shell and a lower shell, which are detachably connected and spliced ​​together to form the cable outlet.

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