Power adapter

Abstract

A power adapter relates to the technical field of power adapters. The charger comprises a shell, a control circuit board, pins, a turntable assembly, a rewinding assembly, a conductive assembly, an elastic assembly and a charging cable. The charging cable is electrically connected with the first conductive part; the second conductive piece is electrically connected with the control circuit board; and one end of the pin is electrically connected with the control circuit board. When a user pulls the charging interface end to be connected with the terminal equipment, the rotating disc assembly rotates to release the charging cable, the rewinding assembly rotates under the driving of the rotating disc assembly, the first conductive part rotates relative to the second conductive part along with the rewinding assembly, and the elastic part abuts against the first conductive part towards the direction of the second conductive part; and when the charging interface end is separated from the terminal equipment, the rewinding assembly rewinds the charging cable pulled out of the annular storage groove into the annular storage groove. By the adoption of the technical scheme, the charging cable can be conveniently stored, and the first conductive part and the second conductive part are conductive all the time.

Description

Technical Field

[0001] The utility model relates to the technical field of power adapters, and particularly relates to a power adapter. Background Art

[0002] A power adapter is a power supply conversion device for small portable electronic devices and electrical appliances, and is widely used in devices such as game consoles, language repeaters, walkmans, laptop computers, and cellular phones. The existing power adapter has an unsatisfactory arrangement and storage of the power cord connected thereto, resulting in the power cord being easily intertwined or knotted when the user carries it, making it difficult to organize and causing certain troubles. Moreover, due to the portability of laptop computers, tablets, etc., people often carry them out for work or carry them with them. Therefore, when working outdoors, the power cord is easily exposed outdoors for a long time, resulting in its softening and affecting its service life. It may also trip passers-by, affecting the safety of the user and pedestrians. The existing power adapter often uses gears, drive motors, etc. to enable the charging cable of the adapter to be retracted and stored. However, when the existing power adapter rotates to release or retract and store the charging cable, the conductive member often fails to conduct electricity, resulting in the power adapter being unable to charge the terminal device and affecting the user's use. Content of the Utility Model

[0003] The purpose of the utility model is to provide a power adapter aiming at the defects and deficiencies of the existing technology, which can at least solve one of the above problems and has the advantages of convenient storage of the charging cable and the first conductive member and the second conductive member always conducting electricity.

[0004] To achieve the above purpose, the technical solution adopted by the utility model is: a power adapter, comprising:

[0005] A housing, in which a limiting shaft is fixedly arranged, and an outlet groove is formed on the outer peripheral wall of the housing;

[0006] A control circuit board, sleeved on the limiting shaft;

[0007] A plug, fixedly arranged on the outer peripheral wall of the housing, one end of the plug is electrically connected to the control circuit board, and the other end is exposed outside the housing for connecting an external power supply;

[0008] A turntable assembly, sleeved on the end of the limiting shaft far from the control circuit board, and an annular storage groove and a first wire groove communicating with the annular storage groove are arranged on the periphery of the turntable assembly;

[0009] A retracting assembly, sleeved on the limiting shaft, placed between the control circuit board and the turntable assembly and detachably assembled at the lower end of the turntable assembly;

[0010] A conductive component is sleeved on the limiting shaft and placed between the rewinding component and the control circuit board. The conductive component includes: a first conductive part detachably assembled on the side of the rewinding component facing the conductive component and a second conductive part detachably assembled on the control circuit board. The first conductive part and the second conductive part are in mutual abutment and electrical connection, and the second conductive part is electrically connected to the control circuit board.

[0011] An elastic component is placed between the rewinding component and the conductive component. The elastic component includes: a positioning part fixedly arranged on the surface of the rewinding component facing the first conductive part and an elastic part sleeved on the positioning part. One end of the elastic part abuts against the surface of the rewinding component facing the first conductive part, and the other end abuts against the surface of the first conductive part facing the rewinding component. And

[0012] A charging cable is coiled in the annular storage groove. One end of the charging cable is a conductive end, and the conductive end passes through the first wire groove and is fixedly connected to the surface of the first conductive part facing the rewinding component. The other end is a charging interface end, which passes through the wire outlet groove and is exposed outside the housing. The charging cable is electrically connected to the first conductive part.

[0013] When the user pulls out the charging interface end to connect it to the terminal device, the turntable component rotates to release the charging cable, the rewinding component rotates driven by the turntable component, the first conductive part rotates relative to the second conductive part following the rewinding component, and the elastic part presses the first conductive part towards the second conductive part.

[0014] When the charging interface end is detached from the terminal device, the rewinding component rewinds the charging cable pulled out of the annular storage groove back into the annular storage groove.

[0015] The present utility model is further provided that an installation block is fixedly arranged on the surface of the rewinding component facing the first conductive part. A first slot is opened on the surface of the installation block facing the first conductive part. A corresponding first insertion part is arranged on the first conductive part, and the first insertion part is inserted into the first slot to assemble the first conductive part on the rewinding component.

[0016] The present utility model is further provided that a second insertion part extending towards the surface of the control circuit board is arranged on the second conductive part. A second insertion slot corresponding to the second insertion part is opened on the control circuit board, and the second insertion part is inserted into the second insertion slot to assemble the second conductive part on the control circuit board.

[0017] The present utility model is further configured such that the turntable assembly includes a first turntable member and a second turntable member detachably assembled on the first turntable member; the first turntable member is provided with the first wire groove and a first through hole for the limiting shaft to pass through; the second turntable member is provided with a second through hole corresponding to the first through hole, a first extension portion surrounding the second through hole and extending towards the first turntable member, and a second extension portion surrounding the first extension portion and provided with an opening for the charging cable to pass through; a second wire groove corresponding to the position of the first wire groove is further provided on the second extension portion; the conductive end passes through the opening and is wound between the first extension portion and the second extension portion and extends out of the first wire groove and the second wire groove.

[0018] The present utility model is further configured such that a first card slot is provided on the second turntable member and between the first extension portion and the second extension portion, and the first turntable member is provided with a first buckle extending towards the second turntable member, and the first buckle cooperates with the first card slot to assemble the first turntable member on the second turntable member.

[0019] The present utility model is further configured such that a third wire groove corresponding to the position of the second wire groove is further provided on the outer peripheral wall of the rewinding assembly.

[0020] The present utility model is further configured such that the rewinding assembly includes a rewinding member and a rewinding housing for placing the rewinding member; a third through hole for the limiting shaft to pass through is provided on the rewinding housing, a first placement groove is provided on the inner peripheral wall of the rewinding housing, a second placement groove is provided on the limiting shaft, and one end of the rewinding member is placed in the first placement groove and one end is placed in the second placement groove.

[0021] The present utility model is further configured such that the first turntable member is further provided with a second buckle extending towards the rewinding housing, and a second card slot is provided on the outer peripheral wall of the rewinding housing, and the second buckle cooperates with the second card slot to assemble the rewinding housing on the first turntable member.

[0022] The present utility model is further configured such that the rewinding member is a hairspring.

[0023] The present utility model is further configured such that the housing includes a first housing with the limiting shaft fixedly provided on the inner wall and a second housing detachably assembled on the first housing, and the second housing is provided with an installation groove for the free end of the limiting shaft to be placed in.

[0024] After adopting the above technical solution, the beneficial effects of the present utility model are as follows: In the present utility model, the charging cable is coiled in the annular storage groove, the conductive end of the charging cable is fixedly connected to one side of the first conductive member facing the rewinding assembly, and its charging interface end passes through the wire outlet groove and is exposed outside the housing. When the user pulls out the charging interface end to connect it to the terminal device, the turntable assembly rotates to release the charging cable, the rewinding assembly rotates driven by the turntable assembly, the first conductive member rotates relative to the second conductive member following the rewinding assembly, and the elastic member presses the first conductive member towards the second conductive member. Among them, the charging cable is electrically connected to the first conductive member, the second conductive member is electrically connected to the control circuit board, the first conductive member and the second conductive member are in contact with each other and electrically connected, and one end of the plug is electrically connected to the control circuit board, ensuring that after the plug is connected to the external power supply, the terminal device is connected to the charging interface end of the charging cable, and the conductive end of the charging cable and the charging interface end continuously conduct electricity. When the charging interface end is detached from the terminal device, the rewinding assembly rewinds the charging cable pulled out of the annular storage groove into the annular storage groove, and the operations of pulling and rewinding the charging cable are simple, convenient and fast. Therefore, on the one hand, this power adapter is convenient for storing the charging cable; on the other hand, it ensures that during the process of pulling and rewinding the charging cable, the first conductive member and the second conductive member are always in contact with each other and pressed tightly under the action of the elastic member and always conduct electricity, ensuring that after the plug is connected to the external power supply, the charging cable always conducts electricity, that is, it can always charge the terminal device. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0026] Figure 1 is the structural explosion diagram of the present utility model;

[0027] Figure 2 is the structural diagram of the present utility model;

[0028] Figure 3 is the structural diagram of the present utility model after hiding the housing;

[0029] Figure 4 is the structural diagram of the present utility model from another perspective;

[0030] Figure 5 is Figure 4 the cross-sectional view taken along the A-A direction corresponding to;

[0031] Figure 6 is the structural explosion diagram of the present utility model after hiding the housing, U-shaped plate and electronic components;

[0032] Figure 7 It is an exploded view of the structure of the turntable assembly;

[0033] Figure 8 It is an exploded view of the structure of the rewinding assembly;

[0034] Figure 9 It is an exploded view of the structure of the housing.

[0035] Description of the reference numerals: 100, housing; 110, first housing; 120, second housing; 121, mounting groove; 130, limiting shaft; 131, second insertion groove; 140, wire outlet groove; 200, control circuit board; 210, second socket; 300, pin; 400, turntable assembly; 410, annular storage groove; 420, first turntable member; 421, first through hole; 422, first wire groove; 423, first buckle; 424, second buckle; 430, second turntable member; 431, second through hole; 432, first extension; 433, second extension; 4331, opening; 4332, second wire groove; 434, first card slot; 500, rewinding assembly; 510, rewinding member; 520, rewinding housing; 521, third through hole; 522, first insertion groove; 523, mounting block; 5231, first slot; 524, second card slot; 525, third wire groove; 526, abutting surface; 600, conductive assembly; 610, first conductive member; 611, first plugging portion; 620, second conductive member; 621, second plugging portion; 700, charging cable; 710, conductive end; 720, charging interface end; 800, elastic assembly; 810, positioning portion; 820, elastic member; 900, U-shaped plate. Detailed implementation manners

[0036] The following further describes the present utility model in detail with reference to the accompanying drawings.

[0037] This specific embodiment is only an explanation of the present utility model, and it is not a limitation to the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without creative contributions as needed, but as long as it is within the scope of the claims of the present utility model, it is protected by the patent law.

[0038] This embodiment relates to a power adapter. Refer to Figures 1 - 5, including: a housing 100, a control circuit board 200, pins 300, a turntable assembly 400, a rewinding assembly 500, an electrical conductive assembly 600, and a charging cable 700. A cavity is provided inside the housing 100 for placing or installing other components. A limiting shaft 130 is fixedly provided inside the housing 100, and a wire outlet groove 140 is formed on the outer peripheral wall of the housing 100; the control circuit board 200 is sleeved on the limiting shaft 130. Specifically, the control circuit board 200 is provided with a through hole for the limiting shaft 130 to pass through. The pins 300 are fixedly provided on the outer peripheral wall of the housing 100. Specifically, a pin slot is formed at one end of the housing 100 away from the wire outlet groove 140 for installing the pins 300. One end of the pins 300 is electrically connected to the control circuit board 200, and the other end is exposed outside the housing 100 for connecting to an external power supply; the turntable assembly 400 is sleeved on one end of the limiting shaft 130 away from the control circuit board 200, and an annular storage groove 410 and a first wire groove 422 communicating with the annular storage groove 410 are provided on the circumferential side of the turntable assembly 400; the rewinding assembly 500 is sleeved on the limiting shaft 130, placed between the control circuit board 200 and the turntable assembly 400, and detachably assembled to the lower end of the turntable assembly 400.

[0039] In this embodiment, referring to Figure 1 and Figures 5 - 6, the conductive component 600 is also sleeved on the limiting shaft 130 and is disposed between the rewinding component 500 and the control circuit board 200. The conductive component 600 includes: a first conductive member 610 detachably assembled on the side of the rewinding component 500 facing the conductive component 600 and a second conductive member 620 detachably assembled on the control circuit board 200; the first conductive member 610 and the second conductive member 620 are in mutual abutment and electrical connection, and there is an electrical connection between the second conductive member 620 and the control circuit board 200. With such a design, it is ensured that during the rotation of the rewinding component 500 following the turntable component 400, the first conductive member 610 rotates following the rotation of the rewinding component 500. Therefore, the conductive end 710 of the charging cable 700 is always connected to the first conductive member 610 and does not get entangled, ensuring safe use. Since the second conductive member 620 is detachably assembled on the control circuit board 200 and the control circuit board 200 is sleeved on the limiting shaft 130, when the rewinding component 500 rotates, the first conductive member 610 also rotates relative to the second conductive member 620. During this process, the first conductive member 610 and the second conductive member 620 are always in mutual abutment and pressing, and at the same time are in electrical connection, ensuring that when the user pulls or rewinds the charging cable 700 to connect with the terminal device, the first conductive member 610 and the conductive end 710 of the charging cable 700 are always electrically connected, and thus are always electrically connected to the charging interface end 720 of the charging cable 700, avoiding the situation that the first conductive member 610 and the second conductive member 620 cannot conduct electricity during the process of pulling or rewinding the charging cable 700, which ultimately leads to the power adapter being unable to charge the terminal device. In this embodiment, the terminal device is a laptop computer. In other embodiments, the terminal device may also be a tablet.

[0040] In this embodiment, the first conductive member 610 and the second conductive member 620 are annular copper sheets of the same size and concentricity, and through holes for the limiting shaft 130 to pass through are provided on both the first conductive member 610 and the second conductive member 620. In this embodiment, there are three first conductive members 610 and second conductive members 620, and the corresponding first conductive members 610 and second conductive members 620 are in mutual abutment. In some embodiments, the first conductive member 610 and the second conductive member 620 may also be two or four.

[0041] In this embodiment, the elastic component 800 is disposed between the rewinding component 500 and the conductive component 600. The elastic component 800 includes: a positioning portion 810 fixedly provided on the surface of the rewinding component 500 facing the first conductive member 610, and an elastic member 820 sleeved on the positioning portion 810; one end of the elastic member 820 abuts against the surface of the rewinding component 500 facing the first conductive member 610, which is the abutting surface 526, and the other end abuts against the surface of the first conductive member 610 facing the rewinding component 500, thereby further pressing the first conductive member 610 towards the second conductive member 620, effectively avoiding the virtual connection between the first conductive member 610 and the second conductive member 620. Further, a wear-resistant conductive layer is provided on the surface of the first conductive member 610 that abuts against the second conductive member 620. In this embodiment, the elastic member 820 is a spring. In other embodiments, the elastic member 820 can also be other elastic components.

[0042] Further, the charging cable 700 is coiled within the annular storage groove 410; one end of the charging cable 700 is a conductive end 710, and the conductive end 710 passes through the first wire groove 422 and is fixedly connected to one side of the conductive component 600 facing the rewinding component 500, and the other end is a charging interface end 720, which passes through the wire outlet groove 140 and is exposed outside the housing 100; the charging cable 700 is electrically connected to the conductive component 600. When the user needs to charge the terminal device, the plug 300 of this power adapter is inserted into an external power source, the charging cable 700 is pulled out of the annular storage groove 410, and then out of the housing 100, and the charging interface end 720 is plugged into the interface of the terminal device. The connection strength between the charging interface end 720 of the charging cable 700 and the interface of the terminal device is greater than the rewinding force of the rewinding component 500 for rewinding the charging cable 700, preventing the charging cable 700 pulled out of the annular storage groove 410 from being rewound into the annular storage groove 410 when the terminal device is charging. During the process of pulling the charging cable 700 out of the annular storage groove 410, the turntable component 400 rotates to release the charging cable 700. Since the rewinding component 500 is assembled at the lower end of the turntable component 400, the rewinding component 500 rotates driven by the turntable component 400, and the first conductive member 610 rotates relative to the second conductive member 620 following the rewinding component, and the elastic member always presses the first conductive member towards the second conductive member. Since the conductive component 600 is electrically connected to the control circuit board 200, the control circuit board 200 is electrically connected to the plug 300, and one end of the plug 300 is connected to an external power source, after the plug 300 is connected to the external power source, the charging interface end 720 of the charging cable 700 is inserted into the interface of the terminal device, and the conductive end 710 and the charging interface end 720 of the charging cable 700 conduct electricity continuously, ensuring that the external power source can supply power to the terminal device continuously and stably. After charging is completed, the charging interface end 720 of the charging cable 700 is separated from the interface of the terminal device. At this time, the rewinding component 500 rewinds the charging cable 700 pulled out of the annular storage groove 410 into the annular storage groove 410, and the operation is simple and convenient. This power adapter has the advantages of convenient storage of the charging cable 700 and quick arrangement of the charging cable 700, avoiding the long exposed charging cable 700 of the terminal device from tripping passers-by and threatening the safety of passers-by when the user is working outdoors. At the same time, it also plays a role in protecting the charging cable 700 and extending its service life.

[0043] In this embodiment, referring to Figure 1 and Figures 5 - 8, on the side of the rewinding assembly 500 facing the first conductive member 610, a mounting block 523 is fixedly provided. On the side of the mounting block 523 facing the first conductive member 610, a first slot 5231 is formed. On the first conductive member 610, a corresponding first insertion portion 611 is provided. The first insertion portion 611 is inserted into the first slot 5231 so that the first conductive member 610 is assembled on the rewinding assembly 500. In this embodiment, on the second conductive member 620, a second insertion portion 621 extending toward the control circuit board 200 is provided. On the control circuit board 200, a second insertion slot 210 corresponding to the second insertion portion 621 is formed. The second insertion portion 621 is inserted into the second insertion slot 210 so that the second conductive member 620 is assembled on the control circuit board 200. The insertion and assembly method of the slot and the insertion portion makes the assembly process of the first conductive member 610 and the second conductive member 620 simple, facilitating subsequent maintenance and replacement. When it is necessary to replace or repair the first conductive member 610 or the second conductive member 620, it only needs to be pulled out from the slot, without complex disassembly work.

[0044] In this embodiment, referring to Figure 6 and Figure 7 , the turntable assembly 400 includes a first turntable member 420 and a second turntable member 430 detachably assembled on the first turntable member 420; the first turntable member 420 is provided with a first wire groove 422 and a first through hole 421 for the limiting shaft 130 to pass through; the second turntable member 430 is provided with a second through hole 431 corresponding to the first through hole 421, a first extension portion 432 surrounding the second through hole 431 and extending toward the first turntable member 420, and a second extension portion 433 surrounding the first extension portion 432 and provided with an opening 4331 for the charging cable 700 to pass through; a second wire groove 4332 corresponding to the position of the first wire groove 422 is further formed on the second extension portion 433; the conductive end passes through the opening 4331 and is coiled between the first extension portion 432 and the second extension portion 433 and extends out of the first wire groove 422 and the second wire groove 4332. Further, a third wire groove 525 corresponding to the position of the second wire groove 4332 is further formed on the outer peripheral wall of the rewinding assembly 500.

[0045] In this embodiment, the charging cable 700 includes: a first charging bundle, a second charging bundle, and a third charging bundle. There are three first wire grooves 422, second wire grooves 4332, and third wire grooves 525 respectively, and their positions correspond to each other. The conductive ends 710 of the first charging bundle, the second charging bundle, and the third charging bundle pass through the opening 4331 and are coiled between the first extension 432 and the second extension 433, extend out from the first wire groove 422 and the second wire groove 4332, and are finally fixedly arranged on the surface of the first conductive member 610 facing the rewinding assembly 500 through the third wire groove 525 on the outer peripheral wall of the rewinding assembly 500. The provision of multiple wire grooves facilitates the charging bundles to be neatly arranged without interfering with the normal operation of other components, and can be smoothly and fixedly arranged on the surface of the first conductive member 610 facing the rewinding assembly 500, without affecting the rotation of the first turntable member 420 and the second turntable member 430 during the user's pulling of the charging cable 700.

[0046] Further, referring to Figures 5 - 7 , a first card slot 434 is provided on the second turntable member 430 and between the first extension 432 and the second extension 433. The first turntable member 420 is provided with a first buckle 423 extending in the direction of the second turntable member 430. The first buckle 423 cooperates with the first card slot 434 to assemble the first turntable member 420 on the second turntable member 430, which has the advantages of simple structure, convenient assembly, firm connection, convenient maintenance and replacement, and easy disassembly.

[0047] In this embodiment, referring to Figures 5 - 8, the rewinding assembly 500 includes: a rewinding member 510 and a rewinding housing 520 for placing the rewinding member 510; a third through hole 521 for the limiting shaft 130 to pass through is provided on the rewinding housing 520, and a first placement groove 522 is provided on the inner peripheral wall of the rewinding housing 520. A second placement groove 131 is provided on the limiting shaft 130. One end of the rewinding member 510 is placed in the first placement groove 522, and one end is placed in the second placement groove 131. The second placement groove 131 serves to fix one end of the rewinding member 510. In this embodiment, the rewinding member 510 is a spring. One end of the spring is placed in the first placement groove 522, and one end is placed in the second placement groove 131 of the limiting shaft 130. When the user pulls the charging cable 700 to drive the rotating assembly to rotate, the rewinding housing 520 also rotates accordingly. Since one end of the spring is placed in the first placement groove 522, one end of the spring also rotates accordingly, and the spring is gradually tightened, and the elastic potential energy stored therein also increases; when the charging cable 700 is detached from the interface of the terminal device, the elastic potential energy stored in the spring begins to be released, converted into kinetic energy, drives the rewinding housing 520 to rotate, and then drives the turntable assembly 400 to rotate, rewinding the charging cable 700. The spring has high torque characteristics, can withstand a large torque without being easily fatigued, and can maintain a highly stable rewinding force. In other embodiments, the rewinding member 510 can also be a transmission component such as a gear or a driving motor.

[0048] Further, referring to Figures 5 - 8 , a second buckle 424 extending toward the rewinding housing 520 is further provided on the first turntable member 420, and a second card slot 524 is provided on the outer peripheral wall of the rewinding housing 520. The second buckle 424 cooperates with the second card slot 524 to assemble the rewinding housing 520 on the first turntable member 420. The user can disassemble the rewinding housing 520 from the first turntable member 420 to repair or replace the rewinding member 510.

[0049] In this embodiment, referring to Figure 1 and Figure 9, the housing 100 includes: a first housing 110 with a limiting shaft 130 fixedly arranged on the inner wall, and a second housing 120 detachably assembled on the first housing 110. The second housing 120 is provided with an installation groove 121 for the free end of the limiting shaft 130 to be inserted. While protecting the components inside the housing 100 and preventing dust and other impurities from entering, the first housing 110 and the second housing 120 are detachable, facilitating timely maintenance and replacement of each component. Among them, a wire outlet groove 140 is opened on the first housing 110. In this embodiment, a U-shaped plate 900 fixedly arranged on the control circuit board 200 is further provided inside the second housing 120. The U-shaped plate 900 is provided with a wire outlet hole communicating with the wire outlet groove 140. The U-shaped plate 900 and the control circuit board 200 enclose an assembly space for components such as a turntable assembly 400, a rewinding assembly 500, a conductive assembly 600, and a charging cable 700. This power adapter further includes: electronic components installed inside the housing 100 and electrically connected to the control circuit board 200.

[0050] The above is only used to illustrate the technical solution of the present invention and not to limit it. Other modifications or equivalent replacements made by those of ordinary skill in the art to the technical solution of the present invention should be covered within the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solution of the present invention.

Claims

1. A power adapter, characterized in that: include: A housing (100), wherein a limit axis (130) is fixedly disposed inside the housing (100), and a wire outlet groove (140) is provided on an outer peripheral wall of the housing (100); A control circuit board (200) is sleeved on the limiting shaft (130); A plug pin (300) is fixedly arranged on the outer peripheral wall of the housing (100), one end of the plug pin (300) is electrically connected to the control circuit board (200), and the other end is exposed outside the housing (100) for connecting to an external power source; A turntable assembly (400) is sleeved on an end of the limit shaft (130) away from the control circuit board (200), and a circular receiving groove (410) and a first wire groove (422) connected to the circular receiving groove (410) are arranged on the circumference of the turntable assembly (400); A rewinding assembly (500) is sleeved on the limiting shaft (130), disposed between the control circuit board (200) and the turntable assembly (400), and detachably assembled on the lower end of the turntable assembly (400); A conductive component (600) is sleeved on the limiting shaft (130) and placed between the rewinding component (500) and the control circuit board (200); the conductive component (600) comprises: a first conductive member (610) detachably mounted on the side of the rewinding component (500) facing the conductive member (600) and a second conductive member (620) detachably mounted on the control circuit board (200); the first conductive member (610) and the second conductive member (620) are in contact with each other and are electrically connected, and the second conductive member (620) is electrically connected to the control circuit board (200); An elastic component (800) is disposed between the rewinding component (500) and the conductive component (600), the elastic component (800) comprising: a positioning portion (810) fixedly disposed on a side of the rewinding component (500) facing the first conductive component (610) and an elastic component (820) sleeved on the positioning portion (810); one end of the elastic component (820) abuts against a side of the rewinding component (500) facing the first conductive component (610), and the other end abuts against a side of the first conductive component (610) facing the rewinding component (500); and A charging cable (700) is coiled in the annular storage groove (410); one end of the charging cable (700) is a conductive end (710), and the conductive end (710) passes through the first wire groove (422) and is fixedly connected to the first conductive member (610) facing the rewinding assembly (500), and the other end is a charging interface end (720) that passes through the outlet groove (140) and is exposed outside the housing (100); the charging cable (700) is electrically connected to the first conductive member (610); When the user pulls the charging interface end (720) to connect with the terminal device, the turntable assembly (400) rotates to release the charging cable (700), the reel assembly (500) rotates under the drive of the turntable assembly (400), the first conductive member (610) follows the reel assembly (500) to rotate relative to the second conductive member (620), and the elastic member (820) presses the first conductive member (610) toward the second conductive member (620); When the charging interface end (720) is detached from the terminal device, the rewinding assembly (500) rewinds the charging cable (700) that has been pulled out of the annular storage groove (410) back into the annular storage groove (410).

2. The power adapter according to claim 1, characterized in that: A mounting block (523) is fixedly provided on one side of the rewinding assembly (500) facing the first conductive member (610); a first slot (5231) is provided on one side of the mounting block (523) facing the first conductive member (610); a corresponding first plug-in portion (611) is provided on the first conductive member (610); the first plug-in portion (611) is inserted into the first slot (5231) so that the first conductive member (610) is assembled on the rewinding assembly (500).

3. The power adapter according to claim 1, characterized in that: The second conductive member (620) is provided with a second plug-in portion (621) extending toward one side of the control circuit board (200); the control circuit board (200) is provided with a second plug-in slot (210) corresponding to the second plug-in portion (621); the second plug-in portion (621) is inserted into the second plug-in slot (210) so that the second conductive member (620) is assembled on the control circuit board (200).

4. The power adapter according to claim 1, characterized in that: The turntable assembly (400) comprises a first turntable member (420) and a second turntable member (430) detachably mounted on the first turntable member (420); the first turntable member (420) is provided with a first wire groove (422) and a first through hole (421) for the limit shaft (130) to pass through; the second turntable member (430) is provided with a second through hole (431) corresponding to the first through hole (421), a first extension portion (431) arranged around the second through hole (431) and extending toward the first turntable member (420); 32) and a second extension portion (433) which is arranged around the first extension portion (432) and has an opening (4331) for the charging cable (700) to pass through; the second extension portion (433) is also provided with a second wire groove (4332) corresponding to the position of the first wire groove (422); the conductive end (710) passes through the opening (4331), is coiled between the first extension portion (432) and the second extension portion (433), and extends out of the first wire groove (422) and the second wire groove (4332).

5. The power adapter according to claim 4, characterized in that: A first slot (434) is provided on the second turntable member (430) and between the first extension portion (432) and the second extension portion (433); the first turntable member (420) is provided with a first buckle (423) extending in the direction of the second turntable member (430); the first buckle (423) cooperates with the first slot (434) to enable the first turntable member (420) to be assembled on the second turntable member (430).

6. The power adapter according to claim 4, characterized in that: A third wire groove (525) corresponding to the position of the second wire groove (4332) is also provided on the outer peripheral wall of the rewinding assembly (500).

7. The power adapter according to claim 4, characterized in that: The rewinding assembly (500) comprises: a rewinding member (510) and a rewinding shell (520) for placing the rewinding member (510); the rewinding shell (520) is provided with a third through hole (521) for the limiting shaft (130) to pass through; the inner wall of the rewinding shell (520) is provided with a first insertion groove (522); the limiting shaft (130) is provided with a second insertion groove (131); one end of the rewinding member (510) is placed in the first insertion groove (522), and the other end is placed in the second insertion groove (131).

8. The power adapter according to claim 7, characterized in that: The first turntable member (420) is also provided with a second clip (424) extending in the direction of the rewinding shell (520), and the outer peripheral wall of the rewinding shell (520) is provided with a second clip groove (524), and the second clip (424) cooperates with the second clip groove (524) to enable the rewinding shell (520) to be assembled on the first turntable member (420).

9. The power adapter according to claim 7 or 8, characterized in that: The rewinding member (510) is a spring.

10. The power adapter according to any one of claims 1 to 8, characterized in that: The housing (100) comprises: a first housing (110) having the limiting shaft (130) fixedly arranged on the inner wall thereof, and a second housing (120) detachably mounted on the first housing (110), wherein the second housing (120) is provided with a mounting groove (121) for the free end of the limiting shaft (130) to be placed therein.

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