CN223246310U - Charging device - Google Patents

Abstract

The application discloses a charging device which comprises a shell, a first circuit component and a second circuit component, wherein the shell is provided with a containing cavity, the first circuit component is connected with the shell and comprises a first circuit board arranged in the containing cavity, a conductive track is arranged on the first circuit board, the second circuit component comprises a charging wire at least partially arranged in the containing cavity, a wire spool arranged in the containing cavity and a conductive piece, the wire spool is rotationally connected with the shell, the conductive piece is arranged on the wire spool, the charging wire is electrically connected with the conductive piece and winds along the peripheral side of the wire spool, the charging wire can extend out of the containing cavity and drive the wire spool and the conductive piece to rotate relative to the shell, the conductive piece is correspondingly arranged with the conductive track, and the conductive piece is in contact conduction with the conductive track. When the wire spool drives the first circuit board and the conductive piece to rotate, the conductive piece can move along the conductive track on the first circuit board, so that the conductive piece is always in contact with the conductive track and is conductive, and the power supply stability of the charging wire is improved.

Description

Charging device

Technical Field

The application relates to the technical field of charging equipment, in particular to a charging device.

Background

With the increasing use of portable electronic devices (e.g., mobile phones, iPad, notebook computers, palm game machines, etc.) in daily life and work, there are also increasing charging devices for charging these portable electronic devices, and in order to achieve a clean desktop, there are many mobile power supply products in the related art that can telescopically house a charging wire, but since the charging wire in such products is often telescopically movable, the connection between the charging wire and a circuit board inside the charging device is easily unstable.

Disclosure of utility model

The embodiment of the application provides a charging device which can enable electric connection between a movable charging wire and a first circuit board to be more stable.

The embodiment of the application provides a charging device, which comprises:

a housing having a receiving cavity;

The first circuit assembly is connected with the shell and comprises a first circuit board arranged in the accommodating cavity, and a conductive track is arranged on the first circuit board;

The second circuit assembly comprises a charging wire at least partially positioned in the accommodating cavity, a wire spool arranged in the accommodating cavity and a conductive piece, wherein the wire spool is rotationally connected with the shell, the conductive piece is arranged on the wire spool, the charging wire is electrically connected with the conductive piece and is wound along the periphery of the wire spool, and the charging wire can extend out of the accommodating cavity and drive the wire spool and the conductive piece to rotate relative to the shell;

The conductive piece is arranged corresponding to the conductive track, and is in contact conduction with the conductive track, so that the charging wire is electrically connected with the first circuit component.

According to the charging device provided by the embodiment of the application, the conductive piece is directly arranged on the wire spool, so that the charging wire can be conducted with the first circuit board through the conductive piece and the conductive track, and when the wire spool drives the first circuit board and the conductive piece to rotate, the conductive piece can move along the conductive track on the first circuit board, so that the charging wire is always in contact with the conductive track and is conductive, and the charging wire can supply power to external electronic equipment more stably.

Drawings

In order to more clearly illustrate the embodiments of the application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of a charging device according to an embodiment of the application;

FIG. 2 is a schematic diagram illustrating an exploded structure of a charging device according to an embodiment of the present application;

FIG. 3 is a schematic diagram of a second circuit assembly corresponding to a first circuit assembly according to an embodiment of the present application;

FIG. 4 is a schematic diagram of an exploded view of a second circuit assembly according to an embodiment of the present application;

FIG. 5 is a schematic diagram of a conductive wire body and a fixing portion according to an embodiment of the application;

FIG. 6 is a schematic cross-sectional view of a fixing portion and a portion of a conductive wire according to an embodiment of the application;

FIG. 7 is a schematic view of a mounting bracket and a friction member according to an embodiment of the present application;

Fig. 8 is a schematic structural view of a friction member, a part of a mounting bracket and a wire spool according to an embodiment of the application.

Reference numerals:

1. A charging device;

10. A housing;

20. First circuit components, 21, first circuit boards, 211, conductive tracks, 22, conductive wire bodies, 221, first ends, 222, main body parts, 223, second ends, 23, first connectors, 24, fixing parts, 241, fixing through grooves, 2411, first openings, 2412, second openings, 2413, third openings, 242 and step structures;

30. Second circuit assembly, 31, wire spool, 32, charging wire, 33, conductive member, 331, conductive contact, 34, second circuit board, 35, second connector, 36, mounting bracket, 361, mounting slot, 362, first chute, 3621, first end, 3622, second end, 37, coil spring, 38, friction member, 381, protrusion;

40. and a battery compartment.

Detailed Description

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the related art, the following description will be made in detail with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

In the related art, there are many mobile power supply devices capable of winding and storing a charging wire, and since the charging wire is often required to be extended and retracted during use, unstable connection between the charging wire and a circuit board inside the mobile power supply device is likely to occur, resulting in unstable voltage output.

In view of the above situation, referring to fig. 1-3, the present application proposes a charging device 1, which includes a housing 10, a first circuit assembly 20 and a second circuit assembly 30, wherein the housing 10 has a receiving cavity (not shown in the drawings), at least part of the first circuit assembly 20 and the second circuit assembly 30 is located in the receiving cavity, the first circuit assembly 20 is connected with the housing 10, and the housing 10 can provide an installation space and a setting basis for part of structures in the first circuit assembly 20 and the second circuit assembly 30. The charging device 1 may be a mobile power source such as a charger.

The second circuit assembly 30 includes a wire spool 31, a charging wire 32 and a conductive member 33, at least a portion of the charging wire 32 is located in the accommodating cavity, the wire spool 31 and the conductive member 33 are disposed in the accommodating cavity, the housing 10 can provide an installation space and a setting foundation for the wire spool 31 and the conductive member 33, the wire spool 31 is rotationally connected with the housing 10, the conductive member 33 is disposed on the wire spool 31, the charging wire 32 is electrically connected with the conductive member 33, and the charging wire 32 is wound along a peripheral side of the wire spool 31, the wire spool 31 provides a setting foundation for the charging wire 32, and the charging wire 32 can be used for being connected with external electronic equipment to supply power for the external electronic equipment. The housing 10 may be provided with a through hole for the charging wire 32 to extend out of the accommodating cavity, and a user may pull the charging wire 32, so that the charging wire 32 extends out of the accommodating cavity and drives the wire spool 31 and the conductive member 33 to rotate relative to the housing 10.

The first circuit assembly 20 includes a first circuit board 21 disposed in the accommodating cavity, and the housing 10 may provide an installation space and a setting foundation for the first circuit board 21, so as to facilitate protection of the first circuit board 21. The first circuit board 21 is provided with a conductive track 211, the conductive piece 33 is arranged corresponding to the conductive track 211, the conductive piece 33 is in contact with the conductive track 211 and conducts electricity, the charging wire 32 is conducted with the first circuit board 21 through the conductive track 211 and the conductive piece 33, when the wire spool 31 and the conductive piece 33 rotate, the conductive piece 33 can move along the conductive track 211 on the first circuit board 21, and accordingly the conductive piece 33 is conducted with the conductive track 211 all the time, and therefore the charging wire 32 can supply electricity to external electronic equipment stably, and the power supply stability of the charging wire 32 is improved. Illustratively, the conductive member 33 is made of conductive metal, and the conductive track 211 is a copper track with good conductivity.

It should be noted that, the second circuit assembly 30 may further include a second circuit board 34, the second circuit board 34 is connected to the wire spool 31, the conductive member 33 is disposed on the second circuit board 34, the charging wire 32 is electrically connected to the conductive member 33 through the second circuit board 34, and the second circuit board 34 can be electrically connected to the first circuit board 21 through the conductive member 33 and the conductive track 211.

In some embodiments of the present application, as shown in fig. 2, the conductive track 211 is circular, so that the conductive member 33 is always in contact with the conductive track 211 during rotation.

As shown in fig. 3-4, the conductive member 33 includes a plurality of conductive spring plates, and the plurality of conductive spring plates are arranged around the axis of the spool 31 at intervals, and the conductive spring plates are in contact with the conductive track 211 for conducting electricity. Specifically, the conductive spring plate is provided with a plurality of conductive spring plates, which is favorable for improving the conduction stability of the conductive spring plate and the conductive track 211, and the conductive spring plate is abutted with the conductive track 211, so that the contact between the conductive spring plate and the conductive track 211 is favorable for maintaining.

In some embodiments, the conductive track 211 may be configured as a circle, and the conductive member 33 slides along the conductive track 211 and conducts electricity during rotation, or a plurality of conductive spring plates are arranged at intervals around the axis of the wire spool 31, each conductive spring plate is provided with a plurality of conductive contacts 331, the plurality of conductive contacts 331 may be arranged at intervals along the radial direction of the wire spool 31, the circular conductive track 211 is also provided with a plurality of circles, the plurality of circles of conductive tracks 211 are arranged at intervals along the radial direction of the wire spool 31, and each circle of conductive track 211 is in contact with the conductive contact 331, so that the conduction stability of the conductive spring plates and the conductive track 211 is further improved.

In some embodiments, as shown in fig. 2, the first circuit assembly 20 may further include a conductive wire body 22 and a first connector 23 located outside the accommodating cavity, the first end 221 of the conductive wire body 22 may extend into the accommodating cavity to be electrically connected with the first circuit board 21, the second end 223 of the conductive wire body 22 is located outside the accommodating cavity and is electrically connected with the first connector 23, and the second circuit assembly 30 may further include a second connector 35 located outside the accommodating cavity, and the second connector 35 is electrically connected with the charging wire 32. The charging device 1 may further include a battery compartment 40, where the battery compartment 40 is electrically connected to the first circuit board 21 and/or the second circuit board 34, and when the charging device 1 charges electronic equipment such as a mobile phone or a computer, the first connector 23 and/or the second connector 35 may be used to connect with external electronic equipment to supply power to the external electronic equipment, or the first connector 23 and/or the second connector 35 may be used to connect with a socket or other power source to charge the battery compartment 40 of the charging device 1, or an interface is further provided on the housing 10 to facilitate insertion of an external power supply plug to charge the battery compartment 40 of the charging device 1.

Referring to fig. 1-2, in some embodiments of the present application, a fixing portion 24 is disposed on a conductive wire body 22, a first connector 23 is detachably connected to the fixing portion 24, specifically, the first connector 23 and the fixing portion 24 may be detachably connected by a clamping, bonding or magnetic attraction manner, the first connector 23 and the fixing portion 24 may be connected together, or may be detached and separated, when the first connector 23 and the fixing portion 24 are connected together, the first connector 23 penetrates through the fixing portion 24, and the conductive wire body 22 and the fixing portion 24 together enclose to form a closed ring.

As shown in fig. 5, for example, the conductive wire body 22 includes a first end 221, a main body 222 and a second end 223 that are sequentially connected, and since the fixing portion 24 is disposed near the first end 221 of the conductive wire body 22, the first connector 23 is connected to the second end 223 of the conductive wire body 22, when the first connector 23 is connected to the fixing portion 24, it can be understood that the fixing portion 24 fixes the second end 223 of the conductive wire body 22 to the first end 221, and the main body 222 and the fixing portion 24 cooperate to form a closed loop, so that the main body 222 can be used as a handle to realize the function of suspending the charging device 1 as a whole, so that a user can carry or store the charging device 1 by hanging the handle, and no additional handle is needed on the charging device 1.

Further, referring to fig. 5-6, in some embodiments of the present application, the fixing portion 24 has a fixing through slot 241, the fixing through slot 241 is disposed along the extending direction of the conductive wire body 22, opposite ends of the fixing through slot 241 have a first opening 2411 and a second opening 2412, the fixing through slot 241 is used for accommodating the first connector 23, the first opening 2411 is used for the first connector 23 to enter and exit the fixing through slot 241, and the second opening 2412 is used for the conductive wire body 22 to enter and exit the fixing through slot 241, that is, both the first connector 23 and the conductive wire body 22 can slide in the fixing through slot 241.

As shown in fig. 6, a step structure 242 is disposed on a groove sidewall of the fixing through groove 241, the step structure 242 is disposed near the second opening 2412, and the step structure 242 is used for being clamped with the first connector 23, so that a relative fixing is formed between the first connector 23 and the fixing portion 24.

Specifically, the second opening 2412 may be formed by the step structure 242, and since the first connector 23 can enter and exit the fixing through slot 241 from the first opening 2411, and the first connector 23 can be clamped with the step structure 242, that is, the first connector 23 cannot pass through the second opening 2412, the caliber of the first opening 2411 is greater than that of the second opening 2412, and the conductive wire body 22 can pass through the second opening 2412, so the conductive wire body 22 can also pass through the first opening 2411.

In some implementations, as shown in fig. 5, a third opening 2413 is formed on a side of the fixing through groove 241 facing away from the conductive wire body 22, the first openings 2411, the third openings 2413 and the second openings 2412 are sequentially arranged and communicated, a space between the third openings 2413 is smaller than a width of the first connector 23, and a space between the third openings 2413 is larger than a width of the conductive wire body 22, that is, the first connector 23 cannot enter and exit the fixing through groove 241 from the third openings 2413, and the conductive wire body 22 can enter and exit the fixing through groove 241 from the third openings 2413.

It will be appreciated that the first opening 2411 is close to the first end 221 of the conductive wire body 22, the first direction L1 is an extending direction from the second opening 2412 toward the first opening 2411, the second direction L2 is opposite to the first direction, that is, the second direction L2 is an extending direction from the first opening 2411 toward the second opening 2412, when the user needs the first connector 23, that is, the first connector 23 needs to leave the fixing through slot 241, the first connector 23 is pushed in the first direction L1 until the first connector 23 completely leaves the fixing through slot 241, at which time the conductive wire body 22 is located in the fixing through slot 241, and the conductive wire body 22 can be separated from the fixing through slot 241 through the third opening 2413, so that the conductive wire body 22 can be unfolded into a straight line for the user to use the conductive wire body 22 and the first connector 23. Or after the user finishes using the conductive wire body 22, that is, when the first connector 23 needs to be fixed in the fixing through groove 241, the conductive wire body 22 is placed into the fixing through groove 241 through the third opening 2413, and then the conductive wire body 22 is pulled along the second direction L2 until the first connector 23 completely enters the fixing through groove 241 through the first opening 2411, and at this time, the first connector 23 is clamped and fixed with the step structure 242, so that the conductive wire body 22 can be enclosed to form a closed ring which can be used as a handle.

Referring to fig. 4, in some embodiments of the present application, the second circuit assembly 30 further includes a mounting bracket 36 fixedly connected to the housing 10, the mounting bracket 36 has a mounting groove 361, the wire spool 31 is disposed in the mounting groove 361 and is rotationally connected to the mounting bracket 36, the mounting bracket 36 provides a mounting space and a setting foundation for the wire spool 31, and the mounting bracket 36 can provide a limiting function for the wire spool 31 to prevent the wire spool 31 from displacing relative to the housing 10 during rotation, so as to improve stable contact between the conductive member 33 and the conductive track 211 on the first circuit board 21. The mounting bracket 36 may be fixedly connected to the housing 10 by screwing, clamping, bonding, etc., which is not particularly limited herein.

Further, referring to fig. 4, in some embodiments of the present application, the second circuit assembly 30 further includes a coil spring 37, one end of the coil spring 37 is connected to the spool 31, the other end of the coil spring 37 is connected to the mounting bracket 36, the coil spring 37 is wound around the periphery of the spool 31, it is understood that when the charging wire 32 is pulled out by an external force, the charging wire 32 may rotate relative to the mounting bracket 36 and the housing 10, and the spool 31 drives the coil spring 37 to elastically deform, and after the external force is removed, the charging wire 32 and the spool 31 may rotate under the elastic force of the coil spring 37 to drive the spool 31 to rotate and return, and the charging wire 32 is wound around the periphery of the spool 31.

In some embodiments, the spool 31 includes a spool, and the spool 31 is rotatably coupled to the mounting bracket 36 by the spool, and the charging wire 32 and the coil spring 37 are wound along a circumferential side of the spool. The wire spool 31 is provided with a mounting groove for mounting the coil spring 37, one end of the coil spring 37 is connected with the wire spool 31, the other end of the coil spring 37 is connected with the side wall of the mounting groove, and the coil spring 37 and the charging wire 32 are respectively located on two opposite sides of the wire spool 31, so that interference between the charging wire 32 and the coil spring 37 during rotation is reduced. In addition, the second wire assembly 30 further includes a cover body coupled to the wire reel 31, and closing the seating groove to provide protection for the installation of the coil spring 37.

Referring to fig. 4 and 7, in some embodiments of the present application, the second circuit assembly 30 further includes a friction member 38, the friction member 38 is located between the wire spool 31 and the mounting bracket 36, the friction member 38 is slidably connected to a first mating member, the friction member 38 abuts against a second mating member, the first mating member is one of the wire spool 31 and the mounting bracket 36, and the second mating member is the other of the wire spool 31 and the mounting bracket 36, and specific embodiments are described below.

The friction member 38 is abutted against the second mating member, that is, there is an extrusion force between the friction member 38 and the second mating member, so when the charging wire 32 receives an external tensile force, the charging wire 32 gradually extends out of the accommodating cavity relative to the housing 10 and drives the wire spool 31 to rotate along the first rotation direction, there is a first friction resistance between the friction member 38 and the second mating member, and when the charging wire 32 gradually retracts into the accommodating cavity relative to the housing 10 and drives the wire spool 31 to rotate along the second rotation direction, there is a second friction resistance between the friction member 38 and the second mating member, the first rotation direction is opposite to the second rotation direction, and the first friction resistance is smaller than the second friction resistance. Specifically, the first rotation direction is one of a clockwise direction and a counterclockwise direction, and the second rotation direction is the other of the clockwise direction and the counterclockwise direction.

It will be appreciated that when the spool 31 rotates, there is a frictional resistance between the second mating member and the friction member 38, and the frictional resistance can drive the friction member 38 to slide relative to the first mating member, so that the frictional resistance between the second mating member and the friction member 38 changes. Specifically, the second frictional resistance of the charging wire 32 when retracted is greater than the first frictional resistance of the charging wire 32 when extended, thereby making the speed of the charging wire 32 when retracted smaller, that is, the first frictional resistance between the spool 31 and the second mating member when the charging wire 32 is extended, thereby reducing the influence of the second mating member on the rotational speed of the spool 31 and the charging wire 32, and the second frictional resistance between the spool 31 and the second mating member when the charging wire 32 is retracted is greater, thereby reducing the rotational speed of the spool 31 and slowing down the retraction speed of the charging wire 32.

Further, referring to fig. 7-8, in some embodiments of the present application, the first mating member is a mounting bracket 36, the second mating member is a wire spool 31, that is, the wire spool 31 and the mounting bracket 36 may be spaced apart, the friction member 38 is disposed on the mounting bracket 36, and the friction member 38 abuts against the wire spool 31, and the wire spool 31 generates friction resistance with the friction member 38 when rotating. The first sliding groove 362 is formed in one side, facing the wire spool 31, of the mounting bracket 36, the friction piece 38 is located in the first sliding groove 362, the friction piece 38 can slide relative to the first sliding groove 362, the friction piece 38 abuts against the wire spool 31, and when the wire spool 31 rotates, the wire spool 31 drives the friction piece 38 to slide in the first sliding groove 362 through friction resistance between the friction piece 38. The first sliding groove 362 provides an installation space for the friction element 38, and the friction element 38 slides in the first sliding groove 362, so that the sliding distance and direction of the friction element 38 can be limited by the first sliding groove 362, and the situation that the friction element 38 shifts and misplaces in the sliding process is reduced.

Still further, referring to fig. 7, in some embodiments of the present application, the first sliding groove 362 extends along the first rotation direction of the spool 31, so that the sliding track of the friction member 38 is consistent with the rotation direction of the spool 31, and the friction member 38 can better slide along with the rotation direction of the spool 31 through friction resistance when the spool 31 rotates, thereby providing friction resistance for the rotation of the spool 31.

As shown in fig. 8, the bottom wall of the first sliding groove 362 is disposed obliquely, and the bottom wall of the first sliding groove 362 has a first end 221 and a second end 223 that are disposed opposite to each other, and the distance from the first end 221 to the spool 31 is smaller than the distance from the second end 223 to the spool 31 in the axial direction of the spool 31, that is, as shown in fig. 8 (a), when the friction member 38 is located at the first end 221 of the first sliding groove 362, the friction member 38 is relatively close to the spool 31, so that the interference generated between the friction member 38 and the spool 31 is large, and the pressure between the friction member 38 and the spool 31 is large, whereby the frictional resistance generated between the friction member 38 and the spool 31 is also large, as shown in fig. 8 (b), and when the friction member 38 is located at the second end 223 of the first sliding groove 362, the friction member 38 is slightly away from the spool 31, so that the interference generated between the friction member 38 and the spool 31 is relatively small, and the pressure between the friction member 38 and the spool 31 is relatively small, whereby the resistance generated between the friction member 38 and the spool 31 is relatively small. The height of the friction member 38 in the first sliding groove 362 is limited, so that the contact pressure between the friction member 38 and the wire spool 31 is different, which is beneficial to the friction member 38 to provide different friction resistances for different rotation directions of the wire spool 31, thereby not only facilitating and saving labor in pulling out the charging wire 32 from the accommodating cavity, but also ensuring safer retraction of the charging wire 32.

The friction member 38 is a silica gel plug, the length of the friction member 38 is half of the length of the first sliding groove 362, the interference distance between the friction member 38 and the spool 31 is 0.2mm when the friction member 38 is positioned at the first end 221 of the first sliding groove 362, and the interference distance between the friction member 38 and the spool 31 is less than 0.05mm when the friction member 38 is positioned at the second end 223 of the first sliding groove 362.

In some embodiments, the mounting bracket 36 may be provided with a plurality of first sliding grooves 362, where the plurality of first sliding grooves 362 are disposed around the circumference of the axis of the wire spool 31 at intervals, and each of the first sliding grooves 362 is provided with a friction member 38, so as to increase the friction resistance generated between the friction member 38 and the wire spool 31 when the charging wire 32 is retracted, and facilitate reducing the speed of the retraction of the charging wire 32.

Or in some embodiments, the first mating member is a wire spool 31, the second mating member is a mounting bracket 36, the friction member 38 is slidably connected to the wire spool 31, and the friction member 38 abuts against the mounting bracket 36. The wire spool 31 is provided with a second chute towards one side of the mounting bracket 36, the friction piece 38 is located in the second chute, the friction piece 38 can slide relative to the second chute, the friction piece 38 is in contact with the mounting bracket 36, and when the wire spool 31 rotates, the friction piece 38 slides in the second chute through friction resistance between the friction piece 38 and the mounting bracket 36.

In some embodiments of the present application, as shown in fig. 8, a plurality of protrusions 381 are provided on a surface of the friction member 38 facing the second mating member, the plurality of protrusions 381 being arranged along the first rotation direction of the spool 31, the protrusions 381 interfering with the second mating member. The protrusions 381 are arranged at intervals, and the protrusions 381 are arc-shaped, that is, the protrusions 381 form wavy friction surfaces, which is beneficial to increasing friction resistance between the friction piece 38 and the second matching piece, so that the wire spool 31 can drive the friction piece 38 to slide on the first matching piece during rotation. Specifically, taking the second mating member as the wire spool 31 and the first mating member as the mounting bracket 36 as an example, the protrusion 381 is located on the surface of the friction member 38 facing the wire spool 31, and the protrusion 381 abuts against the wire spool 31.

In summary, when the spool 31 drives the first circuit board 21 and the conductive member 33 to rotate, the conductive member 33 can move along the conductive track 211 on the first circuit board 21, so as to be in contact with the conductive track 211 and conduct electricity, so that the charging wire 32 can supply power to the external electronic device more stably. Meanwhile, the first end 221 and the second end 223 of the conductive wire body 22 are relatively fixed, and the main body 222 of the conductive wire body 22 is surrounded to form a closed ring, so that the main body 222 can be used as a handle to realize the function of hanging the charging device 1 integrally, thereby enabling a user to carry or store the charging device 1 in a manner of hanging the handle, and further avoiding the need of additionally arranging the handle on the charging device 1. In addition, since the friction member 38 is disposed between the mounting bracket 36 and the wire spool 31, the friction member 38 provides friction resistance for the rotation of the wire spool 31, and meanwhile, the height of the friction member 38 in the chute is limited, so that the interference generated between the friction member 38 and the second matching member is different, which is beneficial for the friction member 38 to provide different friction resistance for different rotation directions of the wire spool 31. When the charging wire 32 is retracted, the second friction resistance between the friction member 38 and the second mating member is larger, so that the retraction speed of the charging wire 32 can be slowed down, and the storage safety of the charging wire 32 can be improved.

In the description of the present application, it should be understood that, if there is an orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", etc. based on the orientation or positional relationship shown in the drawings, it is merely for convenience of describing the present application and simplifying the description, and it is not intended to indicate or imply that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, so that the terms describing the positional relationship in the drawings are merely for exemplary illustration and are not to be construed as limiting the present application, and that the specific meaning of the terms described above should be understood by those of ordinary skill in the art according to specific circumstances.

The foregoing description of the preferred embodiments of the application is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the application.

Claims (11)

1. A charging device, characterized by comprising:

a housing having a receiving cavity;

The first circuit assembly is connected with the shell and comprises a first circuit board arranged in the accommodating cavity, and a conductive track is arranged on the first circuit board;

The second circuit assembly comprises a charging wire at least partially positioned in the accommodating cavity, a wire spool arranged in the accommodating cavity and a conductive piece, wherein the wire spool is rotationally connected with the shell, the conductive piece is arranged on the wire spool, the charging wire is electrically connected with the conductive piece and is wound along the periphery of the wire spool, and the charging wire can extend out of the accommodating cavity and drive the wire spool and the conductive piece to rotate relative to the shell;

The conductive piece is arranged corresponding to the conductive track, and is in contact conduction with the conductive track, so that the charging wire is electrically connected with the first circuit component.

2. The charging device of claim 1, wherein the conductive track is circular;

The conductive piece comprises a plurality of conductive elastic pieces, the conductive elastic pieces are distributed at intervals around the axis of the wire spool, and the conductive elastic pieces are in contact conduction with the conductive track.

3. The charging device according to claim 2, wherein a plurality of conductive contacts are provided on each of the conductive clips, the plurality of conductive contacts being arranged at intervals in a radial direction of the wire spool;

The conductive tracks are arranged in a plurality of circles, the conductive tracks are arranged at intervals along the radial direction of the wire spool, and each circle of conductive track is in contact conduction with the conductive contact.

4. The charging device of claim 1, wherein the first circuit assembly further comprises a conductive wire body and a first connector located outside the accommodating cavity, a first end of the conductive wire body is electrically connected with the first circuit board, a second end of the conductive wire body is electrically connected with the first connector, a fixing portion is disposed on the conductive wire body, the fixing portion is disposed near the first end of the conductive wire body, and the first connector is detachably connected with the fixing portion;

When the first connector is connected with the fixing part, the first connector penetrates through the fixing part, and the conductive wire body and the fixing part are jointly matched and surrounded to form a closed ring.

5. The charging device according to claim 4, wherein the fixing portion has a fixing through groove having a first opening for receiving the first connector and a second opening for the first connector to go in and out of the fixing through groove, and the second opening for the conductive wire to go in and out of the fixing through groove;

The groove side wall of the fixed through groove is provided with a step structure, the step structure is close to the second opening, and the step structure is used for being clamped with the first connector.

6. The charging device of claim 1, wherein the second circuit assembly further comprises a mounting bracket fixedly connected to the housing, the mounting bracket having a mounting slot, the wire spool being disposed within the mounting slot and rotatably connected to the mounting bracket.

7. The charging device of claim 6, wherein the second circuit assembly further comprises a coil spring, one end of the coil spring is connected to the spool, the other end of the coil spring is connected to the mounting bracket, the coil spring is wound around a peripheral side of the spool, and the coil spring is used for driving the spool to rotate and reset.

8. The charging device of claim 6, wherein the second circuit assembly further comprises a friction member located between the wire spool and the mounting bracket, the friction member being slidably connected to a first mating member that abuts a second mating member, the first mating member being one of the wire spool and the mounting bracket, the second mating member being the other of the wire spool and the mounting bracket;

when the charging wire drives the wire spool to rotate along a first rotation direction, a first friction resistance is arranged between the friction piece and the second matching piece, when the charging wire drives the wire spool to rotate along a second rotation direction, a second friction resistance is arranged between the friction piece and the second matching piece, the first rotation direction is opposite to the second rotation direction, and the first friction resistance is smaller than the second friction resistance.

9. The charging device of claim 8, wherein the first mating member is the mounting bracket, the second mating member is the wire spool, a first chute is formed in a side of the mounting bracket facing the wire spool, the friction member is located in the first chute, the friction member abuts against the wire spool, and the wire spool rotates to drive the friction member to slide in the first chute.

10. The charging device of claim 9, wherein the first chute extends in a first rotational direction of the spool, a bottom wall of the first chute is disposed obliquely, and the bottom wall of the first chute has a first end and a second end disposed opposite to each other, and a distance from the first end to the spool is smaller than a distance from the second end to the spool along an axial direction of the spool.

11. The charging device according to claim 8, wherein a plurality of protrusions are provided on a surface of the friction member facing the second mating member, the plurality of protrusions being arranged in a first rotational direction of the spool, the protrusions abutting the second mating member.