Winding device and charging equipment

Abstract

The utility model discloses a winding device and charging equipment, and belongs to the technical field of electronic equipment. The winding device comprises a shell, and the shell is provided with a containing cavity. The wire spool is accommodated in the accommodating cavity and is rotationally connected with the shell; the wire rod is wound on the periphery of the wire spool, and one end of the wire rod is exposed out of the containing cavity; one of the shell and the wire spool is provided with an elastic piece, the other one of the shell and the wire spool is provided with a matching part, the elastic piece elastically abuts against the matching part, and the elastic piece is configured to change the acting force between the wire spool and the shell when the wire spool rotates based on the change of elastic deformation, so that the resistance of the shell to the wire spool when the wire is recycled is larger than that of the shell to the wire spool when the wire is pulled out. According to the wire winding device, by increasing the resistance of the wire spool when the wire is recycled, the rotating speed of the wire spool can be reduced, and then the moving speed of the wire is reduced.

Description

Technical Field

[0001] This application relates to the technical field of electronic devices, and particularly relates to a wire winding device and a charging device. Background Art

[0002] A charging device (such as a mobile power supply or a charger, etc.) is provided with a wire, and the wire is used to connect to an electronic device to charge the electronic device. The charging device may be provided with a wire winding device. When it is necessary to charge the electronic device, the wire can be pulled out from the wire winding device to adjust the length of the wire so that the wire can be applicable to various usage scenarios; when it is not necessary to charge the electronic device, the wire winding device can recycle the wire to store the wire in the wire winding device, which is convenient for carrying the charging device. In related technologies, when the wire winding device recycles the wire, the movement speed of the wire is too fast, resulting in the end of the wire may cause harm to the user's hand. Summary of the Utility Model

[0003] This application provides a wire winding device and a charging device, which can solve the technical problem that the movement speed of the wire is too fast when the wire winding device recycles the wire.

[0004] To solve the above technical problem, on the one hand, this application provides a wire winding device. The wire winding device includes a housing provided with an accommodation cavity; a wire winding disk accommodated in the accommodation cavity and rotatably connected to the housing; a wire wound around the outer periphery of the wire winding disk, and one end of the wire is exposed outside the accommodation cavity; one of the housing and the wire winding disk is provided with an elastic member, and the other is provided with a cooperating portion. The elastic member elastically abuts against the cooperating portion, and the elastic member is configured to change the acting force between the wire winding disk and the housing when the wire winding disk rotates based on the change in the elastic deformation amount, so that the resistance of the housing to the wire winding disk when recycling the wire is greater than the resistance of the housing to the wire winding disk when pulling out the wire.

[0005] On the other hand, this application provides a charging device. The charging device includes the wire winding device as described above, and the wire winding device is used to store the wire.

[0006] For the wire winding device provided by this application, one of the housing and the wire winding disk is provided with an elastic member, and the other is provided with a cooperating portion. The elastic member elastically abuts against the cooperating portion, and the elastic member is configured to change the acting force between the wire winding disk and the housing when the wire winding disk rotates based on the change in the elastic deformation amount, so that the resistance of the housing to the wire winding disk when recycling the wire is greater than the resistance of the housing to the wire winding disk when pulling out the wire. By increasing the resistance of the wire winding disk when recycling the wire, the rotation speed of the wire winding disk can be reduced, and further the movement speed of the wire can be reduced. Description of the Drawings

[0007] To more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0008] Figure 1 is the schematic assembly structure diagram of an embodiment of the wire winding device provided by the present application;

[0009] Figure 2 is the schematic partial assembly structure diagram of an embodiment of the wire winding device provided by the present application with some shells removed;

[0010] Figure 3 is the schematic exploded structure diagram of an embodiment of the wire winding device provided by the present application;

[0011] Figure 4 is the schematic sectional structure diagram of an embodiment of the wire winding device provided by the present application along a perspective;

[0012] Figure 5 is the schematic structure diagram of an embodiment of the wire spool provided by the present application along a perspective;

[0013] Figure 6 is the schematic structure diagram of an embodiment of the wire spool provided by the present application along another perspective;

[0014] Figure 7 is the schematic structure diagram of an embodiment of the wire spool provided by the present application along yet another perspective;

[0015] Figure 8 is the schematic partial sectional structure diagram of another embodiment of the wire winding device provided by the present application along a perspective;

[0016] Figure 9 is the schematic partial sectional structure diagram of yet another embodiment of the wire winding device provided by the present application along a perspective;

[0017] Figure 10 is the schematic partial sectional structure diagram of still another embodiment of the wire winding device provided by the present application along a perspective. Detailed implementation manners

[0018] The following will further describe the present application in detail in combination with the drawings and embodiments. It should be specifically noted that the following embodiments are only used to illustrate the present application, but do not limit the scope of the present application. Similarly, the following embodiments are only partial embodiments of the present application rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope protected by the present application.

[0019] In the description of this application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically defined. The terms "first", "second", and "third" in the embodiments of this application are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first", "second", and "third" may explicitly or implicitly include at least one of such features. All directional indications (such as up, down, left, right, front, back...) in the embodiments of this application are only used to explain the relative positional relationship and movement of components in a specific posture (as shown in the drawings). If the specific posture changes, the directional indications will change accordingly. The terms "include" and "have" in the embodiments of this application and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally further include unlisted steps or units, or may optionally further include other steps or components inherent to these processes, methods, products, or devices.

[0020] Reference to "embodiment" herein means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of this application. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0021] This application provides a wire winding device for storing a wire. Please refer to Figures 1 - 4 , the wire winding device 100 may include a housing 10, a winding disc 20, a torsion spring 30, a wire 40, and an elastic member 50. The housing 10 is provided with a receiving cavity 14, and at least some components of the wire winding device 100 can be installed in the receiving cavity 14, so that the components are not easily eroded by external moisture or dust. The winding disc 20 is received in the receiving cavity 14 and is rotatably connected to the housing 10. The wire 40 is used to connect to an electronic device to charge the electronic device. The wire 40 is wound around the outer periphery of the winding disc 20, and one end of the wire 40 is exposed outside the receiving cavity 14. The torsion spring 30 is used to provide a restoring force when the wire 40 is retracted. Both ends of the torsion spring 30 are respectively connected to the housing 10 and the winding disc 20. When the wire 40 is pulled out, the wire 40 drives the winding disc 20 and the torsion spring 30 to move, and the torsion spring 30 undergoes elastic deformation and stores elastic potential energy; when the wire 40 is retracted, the elastic deformation of the torsion spring 30 is restored, the torsion spring 30 releases the elastic potential energy, and the torsion spring 30 drives the winding disc 20 and the wire 40 to move, so as to store the wire 40 in the wire winding device 100.

[0022] One of the housing 10 and the winding disc 20 is provided with an elastic member 50, and the other is provided with a mating portion 24. The elastic member 50 can be elastically deformed under the action of an external force and recover the deformation after the external force is removed. The elastic member 50 can be disposed on the housing 10, and the mating portion 24 is disposed on the winding disc 20; or, the elastic member 50 is disposed on the winding disc 20, and correspondingly, the mating portion 24 is disposed on the housing 10. The elastic member 50 elastically abuts against the mating portion 24, and the elastic member 50 is configured to change the acting force between the winding disc 20 and the housing 10 when the winding disc 20 rotates based on the change in the elastic deformation amount, so that the resistance of the housing 10 to the winding disc 20 when recovering the wire 40 is greater than the resistance of the housing 10 to the winding disc 20 when pulling out the wire 40. By increasing the resistance of the winding disc 20 when recovering the wire 40, the resistance generates an acceleration on the winding disc 20, and the direction of the acceleration is opposite to the direction of the rotational speed of the winding disc 20, so that the rotational speed of the winding disc 20 can be reduced, and further the moving speed of the wire 40 can be reduced, thereby improving the safety of the wire winding device 100 when recovering the wire 40.

[0023] As described above, the elastic member 50 can be disposed on the housing 10, and the mating portion 24 is disposed on the winding disc 20; or, the elastic member 50 is disposed on the winding disc 20, and correspondingly, the mating portion 24 is disposed on the housing 10, as long as the elastic member 50 and the mating portion 24 cooperate with each other to change the elastic deformation amount of the elastic member 50. The following takes the mating portion 24 and the elastic member 50 being disposed on the winding disc 20 and the housing 10 respectively as an example for illustration.

[0024] Please refer to Figures 4 - 7 , the mating portion 24 includes at least one groove 241 disposed along the circumferential direction of the winding disc 20. When the winding disc 20 rotates, the elastic member 50 slides along the groove wall of the groove 241 to change the elastic deformation amount of the elastic member 50. Since the groove 241 has a certain depth, when the elastic member 50 slides along the groove wall of the groove 241, it will cause the elastic deformation amount of the elastic member 50 elastically abutting against the mating portion 24 to change, and further change the acting force between the winding disc 20 and the housing 10 based on the change in the elastic deformation amount.

[0025] Please continue to refer to Figure 7, the groove 241 has a first groove wall 242 and a second groove wall 243 that are interconnected. The groove walls of the groove 241 can be a curved surface structure, in which case the first groove wall 242 and the second groove wall 243 are respectively curved in the extending direction; the groove walls of the groove 241 can also be a planar structure, in which case the first groove wall 242 and the second groove wall 243 are respectively straight in the extending direction. There can be a smooth transition between the first groove wall 242 and the second groove wall 243, so that the change in the elastic deformation amount of the elastic member 50 is relatively smooth, preventing jamming when the wire 40 is recycled. The first groove wall 242 is located in the downstream direction of the rotation direction of the winding disc 20 when the wire 40 is recycled, and the second groove wall 243 is located in the downstream direction of the rotation direction of the winding disc 20 when the wire 40 is pulled out. The force between the first groove wall 242 and the elastic member 50 when the wire 40 is recycled is greater than the force between the second groove wall 243 and the elastic member 50 when the wire 40 is pulled out. Exemplarily, the rotation direction of the winding disc 20 when the wire 40 is recycled can be Figure 7 the counterclockwise direction shown in, and correspondingly, the rotation direction of the winding disc 20 when the wire 40 is pulled out can be Figure 7 the clockwise direction shown in. When the wire 40 is recycled, the elastic member 50 first slides into the groove 241 along the second groove wall 243. The elastic deformation of the elastic member 50 is restored during the process of sliding over the second groove wall 243, and then it slides out of the groove 241 along the first groove wall 242, and the elastic member 50 undergoes elastic compression deformation during the process of sliding over the first groove wall 242; correspondingly, when the wire 40 is pulled out, the elastic member 50 first slides into the groove 241 along the first groove wall 242. The elastic deformation of the elastic member 50 is restored during the process of sliding over the first groove wall 242, and then it slides out of the groove 241 along the second groove wall 243, and the elastic member 50 undergoes elastic compression deformation during the process of sliding over the second groove wall 243. Since the groove 241 is opened in the mating part 24, and the mating part 24 and the elastic member 50 are respectively arranged on the winding disc 20 and the housing 10, setting the force between the first groove wall 242 and the elastic member 50 when the wire 40 is recycled to be greater than the force between the second groove wall 243 and the elastic member 50 when the wire 40 is pulled out can make the resistance of the housing 10 to the winding disc 20 when the wire 40 is recycled greater than the resistance of the housing 10 to the winding disc 20 when the wire 40 is pulled out, thereby reducing the movement speed of the wire 40.

[0026] In one embodiment, a protrusion is provided on the first groove wall 242, and no protrusion is provided on the second groove wall 243. When recovering the wire 40, the elastic member 50 undergoes elastic compression deformation during the process of sliding over the first groove wall 242. The protrusion hinders the sliding of the elastic member 50, which can increase the acting force between the first groove wall 242 and the elastic member 50. Correspondingly, when pulling out the wire 40, the elastic member 50 undergoes elastic compression deformation during the process of sliding over the second groove wall 243. Since there is no protrusion hindering the sliding of the elastic member 50, the acting force between the second groove wall 243 and the elastic member 50 can be reduced, so that the acting force between the first groove wall 242 and the elastic member 50 when recovering the wire 40 is greater than the acting force between the second groove wall 243 and the elastic member 50 when pulling out the wire 40.

[0027] In one embodiment, as Figure 7 shown, along the circumferential direction of the winding disc 20, the extension length of the first groove wall 242 is less than that of the second groove wall 243, so that the elastic compression time of the elastic member 50 sliding over the first groove wall 242 is less than the elastic compression time of the elastic member 50 sliding over the second groove wall 243, thereby making the acting force between the first groove wall 242 and the elastic member 50 when recovering the wire 40 greater than the acting force between the second groove wall 243 and the elastic member 50 when pulling out the wire 40. If the elastic member 50 undergoes a large elastic compression deformation amount in a short time, a large acting force will be generated between the fitting portion 24 and the elastic member 50, and further a large resistance will be generated by the housing 10 on the winding disc 20. Setting the extension length of the first groove wall 242 to be less than that of the second groove wall 243 makes the first groove wall 242 steeper relative to the second groove wall 243, while the second groove wall 243 is flatter relative to the first groove wall 242. Furthermore, the elastic compression time of the elastic member 50 sliding over the first groove wall 242 is less than the elastic compression time of the elastic member 50 sliding over the second groove wall 243, and the acting force between the first groove wall 242 and the elastic member 50 when recovering the wire 40 is greater than the acting force between the second groove wall 243 and the elastic member 50 when pulling out the wire 40, which can reduce the rotation speed of the winding disc 20, thereby improving the safety of the wire winding device 100 when recovering the wire 40.

[0028] In one embodiment, as Figure 3 、 Figure 4 shown, the housing 10 includes a first housing 11, a second housing 12, and a rotating shaft 13. The rotating shaft 13 is connected to the first housing 11, the second housing 12 is covered on one side of the first housing 11, and the second housing 12 and the first housing 11 enclose a receiving cavity 14. The material of the housing 10 can be plastic, metal or other materials. The connection method between the second housing 12 and the first housing 11 can be snap connection, bonding or screw connection. Please refer to Figures 3 - 6, the wire winding disc 20 includes a cylindrical side wall 21 and a turntable 22. The cylindrical side wall 21 is sleeved on the rotating shaft 13, so that the wire winding disc 20 is rotatably connected to the housing 10. The torsion spring 30 is accommodated in the cylindrical side wall 21. One end of the torsion spring 30 is connected to the rotating shaft 13, and the torsion spring 30 is wound around the outer circumference of the rotating shaft 13. The turntable 22 is connected to one end of the cylindrical side wall 21. The wire 40 is wound around the outer circumference of the cylindrical side wall 21, and the wire 40 is located in the space formed by the enclosure of the turntable 22 and the housing 10. The turntable 22 can be connected to one end of the cylindrical side wall 21 close to the first housing 11, or the turntable 22 can be connected to one end of the cylindrical side wall 21 close to the second housing 12. The wire 40 is arranged in the space formed by the enclosure of the turntable 22 and the housing 10, so that the turntable 22 and the housing 10 can limit the wire 40, thereby reducing the entanglement of the wire 40 during winding.

[0029] The cylindrical side wall 21 can be directly sleeved on the rotating shaft 13, or can be indirectly sleeved on the rotating shaft 13 through other components. Please refer to Figures 4 - 6 , in an embodiment, the wire winding disc 20 includes an end plate 23. The end plate 23 is connected to the inner wall of the cylindrical side wall 21, and the cylindrical side wall 21 is sleeved on the rotating shaft 13 through the end plate 23. The wire winding device 100 includes a cover plate 60. The cover plate 60 covers one end of the cylindrical side wall 21 away from the end plate 23. The other end of the torsion spring 30 is connected to the end plate 23 or the cylindrical side wall 21. The torsion spring 30 is accommodated in the space formed by the enclosure of the cover plate 60, the end plate 23 and the cylindrical side wall 21. The cover plate 60 and the end plate 23 can limit the torsion spring 30, so that the movement of the torsion spring 30 is more stable.

[0030] Some exemplary setting methods of the groove 241 are described below. In an embodiment, as Figures 4 - 7 shown, the engaging portion 24 is provided on the wire winding disc 20. The groove 241 is opened on the outer circumference of the turntable 22. The elastic member 50 is installed on the side surface of the housing 10 surrounding the turntable 22. Since the elastic member 50 is installed on the side surface of the housing 10, the elastic member 50 does not need to occupy the space of the wire winding device 100 in the direction perpendicular to the turntable 22, and the size of the wire winding device 100 in the direction perpendicular to the turntable 22 can be reduced.

[0031] In an embodiment, the engaging portion 24 is provided on the wire winding disc 20. The groove 241 is opened on the surface facing away from the connection surface of the turntable 22 and the cylindrical side wall 21. The elastic member 50 is installed on the surface of the housing 10 extending in a direction perpendicular to the rotating shaft 13. For example, the elastic member 50 can be installed on the top surface or the bottom surface of the housing 10. Since the elastic member 50 is installed on the surface of the housing 10 extending in a direction perpendicular to the rotating shaft 13, the elastic member 50 does not need to occupy the space of the wire winding device 100 in the direction of the extension of the rotating shaft 13, and the size of the wire winding device 100 in the direction of the extension of the rotating shaft 13 can be reduced.

[0032] The number of the grooves 241 can be one or more. For example, the number of the grooves 241 is two, three or more. In one embodiment, as Figure 7 shown, there are multiple grooves 241, and the multiple grooves 241 are circumferentially spaced along the winding disc 20. By circumferentially spacing multiple grooves 241 on the winding disc 20, when the elastic member 50 slides over the groove walls of each groove 241, the elastic deformation amount of the elastic contact between the elastic member 50 and the fitting portion 24 will change, so that the time interval of the change in the acting force between the winding disc 20 and the housing 10 when the winding disc 20 rotates is shorter, and the rotational speed of the winding disc 20 decreases more significantly. Furthermore, the moving speed of the wire 40 is slower when the wire 40 is recovered, further improving the safety of the wire winding device 100 when recovering the wire 40.

[0033] Some exemplary setting manners of the elastic member 50 will be described below. In one embodiment, as Figure 8 shown, the elastic member 50 includes an elastic rod 51. One end of the elastic rod 51 is installed on the housing 10, and the other end of the elastic rod 51 abuts against the winding disc 20. The elastic rod 51 is configured to change the elastic deformation amount in the extending direction of the elastic rod 51. The elastic rod 51 can be in a rod shape. The elastic rod 51 can be installed on the side surface of the housing 10, or can be installed on the top surface or the bottom surface of the housing 10. The connection manner between the elastic rod 51 and the housing 10 can be snap connection, bonding or screw connection. The elastic rod 51 can elastically deform in the extending direction of the elastic rod 51, and change the acting force between the winding disc 20 and the housing 10 based on the change in the elastic deformation amount.

[0034] The elastic rod 51 can be an integrally formed structure processed from an elastic material (such as plastic, rubber or silicone, etc.) into a rod shape, so that the elastic rod 51 can elastically deform in its extending direction. Or, the elastic rod 51 is a split structure. Please refer to Figure 8 . The elastic rod 51 includes a ball 511, a spring 512 and a support rod 513. The support rod 513 is connected to the housing 10. The spring 512 is accommodated in the support rod 513. The balls 511 respectively abut against one end of the spring 512 and the winding disc 20. By accommodating the spring 512 in the support rod 513, the support rod 513 can prevent the spring 512 from undergoing lateral deflection when compressed, thereby restricting the elastic deformation of the spring 512 in the extending direction of the support rod 513, so that the elastic rod 51 elastically deforms in the extending direction. By providing the balls 511 to abut against the winding disc 20, a rolling friction is formed between the elastic member 50 and the winding disc 20. Compared with sliding friction, the resistance of rolling friction is smaller, which can improve the feel when pulling out the wire 40.

[0035] In one embodiment, as Figure 9As shown, the elastic member 50 includes an elastic arm 52. One end of the elastic arm 52 is mounted outside the housing 10, and the other end of the elastic arm 52 is bent and penetrates into the housing 10 to abut against the winding disc 20. The elastic arm 52 is configured to change the amount of elastic deformation in a direction perpendicular to the extension direction of the elastic arm 52. The elastic arm 52 can be formed by bending a wire or a metal sheet. The elastic arm 52 can be mounted on the side surface of the housing 10, or can be mounted on the top surface or the bottom surface of the housing 10. The connection manner between the elastic arm 52 and the housing 10 can be snap connection, bonding or screw connection. The elastic arm 52 can elastically deform in a direction perpendicular to the extension direction of the elastic arm 52, and change the acting force between the winding disc 20 and the housing 10 during rotation based on the change in the amount of elastic deformation. The elastic arm 52 is set to be bent so that one end of the elastic member 50 connected to the housing 10 can be attached to the housing 10, thereby reducing the installation space of the elastic member 50 and facilitating the miniaturization of the winding device 100.

[0036] In one embodiment, as Figure 10 shown, the elastic member 50 includes an elastic ring 53. The elastic ring 53 is mounted on the housing 10. The elastic ring 53 is provided with a protrusion 531. The protrusion 531 abuts against the winding disc 20. The protrusion 531 is configured to change the amount of elastic deformation in the extension direction of the protrusion 531 and / or in a direction perpendicular to the extension direction of the protrusion 531. The elastic ring 53 can be mounted on the side surface of the housing 10. For example, the elastic ring 53 is sleeved on the outer periphery of the winding disc 20, and the elastic ring 53 is mounted on the inner wall of the side surface of the housing 10; the elastic ring 53 can also be mounted on the top surface or the bottom surface of the housing 10. For example, the elastic ring 53 is attached to the inner wall of the top surface or the bottom surface of the housing 10. The protrusion 531 of the elastic ring 53 can elastically deform in the extension direction of the protrusion 531 and / or in a direction perpendicular to the extension direction of the protrusion 531, and change the acting force between the winding disc 20 and the housing 10 during rotation based on the change in the amount of elastic deformation.

[0037] Exemplarily, the material of the elastic ring 53 is rubber or silica gel, so that the elastic ring 53 will not make a sound or make a small sound when sliding along the groove wall of the groove 241, which can reduce the sound during the recovery of the wire 40, thereby improving the user experience.

[0038] The number of the elastic members 50 provided can be one or multiple. For example, the number of the elastic members 50 provided is two, three or more. In one embodiment, as Figures 8 - 10As shown, there are two elastic members 50, and the two elastic members 50 are symmetrically arranged on opposite sides of the rotation axis of the wire winding disc 20. It should be noted that when the elastic member 50 includes an elastic ring 53, the elastic ring 53 can be formed by connecting two semi-circular members, and a protrusion 531 is connected to each semi-circular member. Symmetrically arranging the two elastic members 50 on opposite sides of the rotation axis of the wire winding disc 20 makes the resistance of the housing 10 to the wire winding disc 20 also symmetric about the rotation axis of the wire winding disc 20, which can prevent the wire winding disc 20 from tilting or deforming due to unilateral force, making the rotation of the wire winding disc 20 more stable.

[0039] In one embodiment, as Figure 3 , Figure 4 shown, the wire winding device 100 includes a first conductive member 70 and a second conductive member 80, and the first conductive member 70 and the second conductive member 80 are used for electrically connecting to a power source. The first conductive member 70 is electrically connected to the wire 40, the first conductive member 70 is connected to the wire winding disc 20, and the wire winding disc 20 can drive the first conductive member 70 to rotate. The first conductive member 70 can be a conductive disc. The second conductive member 80 is electrically connected to the first conductive member 70, and the second conductive member 80 is installed on the first housing 11. The second conductive member 80 can be a plurality of conductive contacts, and the first conductive member 70 always maintains electrical connection with the second conductive member 80 during rotation, so that the electrical connection between the wire 40 and the electronic device will not be disconnected during the process of adjusting the length of the wire 40.

[0040] In one embodiment, as Figure 2 , Figure 3 shown, the wire winding device 100 includes a limiting member 90. The limiting member 90 is rotatably connected to the second housing 12 and is slidably connected to the wire winding disc 20. When the wire 40 is pulled out to the target length, the limiting member 90 can limit the further rotation of the wire winding disc 20, so that the pulled-out length of the wire 40 is relatively stable.

[0041] The present application provides a charging device for charging an electronic device. Exemplarily, the charging device can be a mobile power supply or a charger, etc. The charging device may include the wire winding device 100 as described above, and the wire winding device 100 is used for storing the wire to facilitate the carrying of the charging device. The charging device may further include components such as a battery (not shown in the figure) or a transformer (not shown in the figure), wherein the battery is used for storing electric energy and the transformer is used for voltage conversion. The above charging device is only one embodiment of the present application, and other charging devices having the wire winding device 100 are also within the protection scope of the present application, and the specific internal structure of the charging device will not be elaborated.

[0042] The above are only some embodiments of the present application, and thus do not limit the protection scope of the present application. Any equivalent device or equivalent process transformation made by using the content of the specification and drawings of the present application, or directly or indirectly applied in other related technical fields, shall be similarly included in the patent protection scope of the present application.

Claims

1. A wire winding device, characterized in that, The winding device comprises: A housing, wherein the housing is provided with a receiving cavity; A wire winding drum, the wire winding drum is accommodated in the accommodation cavity and is rotatably connected to the housing; A wire, the wire being wound around the outer periphery of the winding drum, with one end of the wire being exposed outside the accommodating cavity; One of the shell and the winding drum is provided with an elastic member, and the other is provided with a matching portion, the elastic member elastically abuts against the matching portion, and the elastic member is configured to change the acting force between the winding drum and the shell when the winding drum rotates based on the change in the elastic deformation amount, so that the resistance of the shell to the winding drum when the wire is recovered is greater than the resistance of the shell to the winding drum when the wire is pulled out.

2. The winding device according to claim 1, characterized in that, The matching portion includes at least one groove arranged along the circumference of the winding disk, and when the winding disk rotates, the elastic member slides along the groove wall of the groove to change the elastic deformation amount of the elastic member; The groove has a first groove wall and a second groove wall connected to each other, the first groove wall is located downstream of the rotation direction of the winding drum when the wire is recovered, and the second groove wall is located downstream of the rotation direction of the winding drum when the wire is pulled out, and the force between the first groove wall and the elastic member when the wire is recovered is greater than the force between the second groove wall and the elastic member when the wire is pulled out.

3. The winding device according to claim 2, characterized in that, Along the circumferential direction of the winding drum, the extension length of the first groove wall is smaller than the extension length of the second groove wall, so that the elastic compression time of the elastic member sliding over the first groove wall is smaller than the elastic compression time of the elastic member sliding over the second groove wall.

4. The winding device according to claim 2 or 3, characterized in that The housing includes a rotating shaft, and the winding reel includes a cylindrical side wall and a rotating disk, wherein the cylindrical side wall is sleeved on the rotating shaft, the rotating disk is connected to one end of the cylindrical side wall, the wire is wound around the outer periphery of the cylindrical side wall, and the wire is located in a space enclosed by the rotating disk and the housing; The matching portion is arranged on the winding disk, the groove is opened on the outer periphery of the rotating disk, and the elastic member is installed on the side of the shell that is arranged around the rotating disk.

5. The winding device according to claim 2 or 3, characterized in that, The housing includes a rotating shaft, and the winding reel includes a cylindrical side wall and a rotating disk, wherein the cylindrical side wall is sleeved on the rotating shaft, the rotating disk is connected to one end of the cylindrical side wall, the wire is wound around the outer periphery of the cylindrical side wall, and the wire is located in a space enclosed by the rotating disk and the housing; The matching portion is arranged on the winding disk, the groove is arranged on a side away from the rotating disk and connected to the cylindrical side wall, and the elastic member is installed on a side of the shell perpendicular to the extending direction of the rotating shaft.

6. The coiling device according to claim 2 or 3, characterized in that, The elastic member comprises an elastic rod, one end of which is mounted on the housing, the other end of which abuts against the winding reel, and the elastic rod is configured to change an elastic deformation amount in an extending direction of the elastic rod.

7. The coiling device according to claim 6, characterized in that, The elastic rod comprises a ball, a spring and a support rod, wherein the support rod is connected to the housing, the spring is accommodated in the support rod, and the ball abuts against one end of the spring and the winding drum respectively.

8. The coiling device according to claim 2 or 3, characterized in that, The elastic member includes elastic arms, one end of each elastic arm is installed outside the housing, the other end of the elastic arm forms a bend and penetrates into the housing to abut against the wire winding disc, and the elastic arm is configured to change the elastic deformation amount in a direction perpendicular to the extension direction of the elastic arm.

9. The coiling device according to claim 2 or 3, characterized in that, The elastic member includes an elastic ring, the elastic ring is installed on the housing, the elastic ring is provided with a protrusion, the protrusion abuts against the wire winding disc, and the protrusion is configured to change the elastic deformation amount in the extension direction of the protrusion and / or in a direction perpendicular to the extension direction of the protrusion.

10. The coiling device according to claim 2 or 3, characterized in that, There are a plurality of the grooves, and the plurality of grooves are arranged at intervals along the circumferential direction of the wire winding disc; And / or, there are two elastic members, and the two elastic members are symmetrically arranged on opposite sides of the rotation axis of the wire winding disc.

11. A charging device, characterized in that, It includes a wire winding device according to any one of claims 1-10, and the wire winding device is used for storing a wire.

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