CN210327944U - Winding device, mobile phone protection shell with winding device and earphone - Google Patents

Abstract

The utility model provides a winding device, which comprises a seat body, wherein the seat body comprises a partition plate and a side plate connected to the periphery of the partition plate, the top surface of the partition plate and the side plate surround to form an upper accommodating space, and the bottom surface of the partition plate and the side plate surround to form a lower accommodating space; the ratchet wheel is rotatably arranged in the upper accommodating space; the control switch is used for controlling the ratchet wheel to maintain a rotated position and controlling the ratchet wheel to reset to an initial position; the elastic piece is connected between the ratchet wheel and the partition plate and used for generating resetting force on the ratchet wheel; and the wire, the wire includes first portion and second part, and the first portion sets up in last accommodating space and coils on the ratchet, and the second part sets up in accommodating space down, and outside the seat was stretched out respectively to the one end of first portion and second part, the other end electric connection of ratchet and baffle and second part was passed to the other end of first portion, the utility model also discloses a cell-phone protective housing and earphone with above-mentioned winding device.

Description

Winding device, mobile phone protection shell with winding device and earphone

Technical Field

The utility model relates to a technical field is accomodate to the wire rod, in particular to winding device and have this winding device's cell-phone protective housing and earphone.

Background

The data line and the earphone line are used as common data transmission tools to communicate two electronic devices for data transmission, or communicate the electronic devices with a power supply for charging, or output signals from the electronic devices. However, after the data cable or the earphone cable is used up, the data cable or the earphone cable may be discarded, and due to the length of the data cable or the earphone cable, the data cable or the earphone cable is easy to be randomly bent and wound when the number of the data cable or the earphone cable is large, and cannot be stored well. Especially, when the earphone cord is used in cooperation with the mobile phone, the user is bothered by winding the earphone cord together, and the user is inconvenienced because the earphone cord needs to be additionally arranged after being used.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides a winding device convenient to operate.

The utility model discloses still provide a cell-phone protective housing with above-mentioned winding device.

The utility model discloses still provide an earphone with above-mentioned winding device.

The utility model provides a winding device, winding device includes: the base comprises a partition board and a side board connected to the periphery of the partition board, the top surface of the partition board and the side board enclose to form an upper accommodating space, and the bottom surface of the partition board and the side board enclose to form a lower accommodating space; the ratchet wheel is rotatably arranged in the upper accommodating space; the control switch is used for controlling the ratchet wheel to maintain a rotated position and controlling the ratchet wheel to reset to an initial position; the elastic piece is connected between the ratchet wheel and the partition plate and used for generating resetting force on the ratchet wheel; and a wire including a first portion disposed in the upper receiving space and wound around the ratchet, the first portion having opposite first and second ends; the second part is arranged in the lower accommodating space and is provided with a third end and a fourth end which are opposite, the first end and the third end respectively extend out of the seat body, and the second end and the fourth end are electrically connected with each other.

In an embodiment, a winding post protrudes from a top surface of the ratchet wheel, the first portion is wound around the winding post, the second end is provided with a plurality of first conductive portions, the fourth end is provided with a plurality of second conductive portions, the first conductive portions and the second conductive portions are electrically connected through a conductive element, and the conductive element is located at a center position of the ratchet wheel.

In an embodiment, the conductive assembly includes a plurality of conductive metal rings and a plurality of conductive elastic pieces, the conductive metal rings are stacked in the axial direction, each conductive metal ring extends to form a solder leg, and each solder leg is connected to a corresponding second conductive part in a welding manner; each conductive elastic sheet is provided with a welding end and an elastic end, each welding end is connected with one corresponding first conducting part in a welding mode, and each elastic end is in elastic butt joint with one corresponding conductive metal ring.

In one embodiment, a mounting post for mounting the conductive metal rings is convexly arranged at the center of the partition plate, a plurality of mounting grooves are formed in the outer surface of the mounting post in a surrounding manner, the plurality of conductive metal rings are respectively mounted and fixed in the plurality of mounting grooves, and a welding leg of each conductive metal ring extends into the lower accommodating space; the center of the ratchet wheel is provided with a through hole for containing the mounting column, the winding column is provided with a wire inlet groove communicated with the through hole, one end of the wire inlet groove communicated with the through hole extends towards one side to form a groove, the second end of the wire inlet groove is contained in the wire inlet groove, and the conductive elastic sheets are stacked in the groove.

In an embodiment, a winding post protrudes from the top surface of the ratchet wheel, the first portion is wound around the winding post, a through hole is formed in the center of the ratchet wheel, a wire inlet groove communicated with the through hole is formed in the winding post, a wire passing hole is formed in the partition plate, the second end is integrally connected with the fourth end through the wire inlet groove, the through hole and the wire passing hole in sequence, and the second portion is wound and contained in the lower containing space.

In one embodiment, an opening for accommodating the control switch is formed in a side wall of the side plate, which is located in the upper accommodating space, and the opening includes a first opening portion extending along the circumferential direction of the side plate and a second opening portion extending along the axial direction of the side plate and communicating with the first opening portion; the control switch is a shifting lever, one end of the shifting lever is connected to the side wall of one end, away from the second opening, of the first opening, the other end of the shifting lever is provided with a clamping portion protruding out of the inner side face of the side plate and a shifting portion protruding out of the top face of the side plate for operation, and the clamping portion is used for being clamped with the teeth of the ratchet wheel.

In an embodiment, the winding device further comprises a surface cover and a bottom cover, the surface cover is arranged on the top surface of the side plate, the bottom cover is arranged on the bottom surface of the side plate, the side edge of the surface cover is provided with a abdicating notch, and the shifting part penetrates through the abdicating notch and is exposed out of the top of the surface cover.

In an embodiment, the elastic member is a return coil spring, a first positioning column is arranged on the top surface of the partition plate, a second positioning column is arranged on the bottom surface of the ratchet wheel, the first positioning column and the second positioning column are arranged in a staggered mode, and the return coil spring is arranged between the first positioning column and the second positioning column in a coiled mode.

The utility model also provides a mobile phone protection shell, including the frame and connect in the backplate at frame top, the bottom surface of backplate with the frame forms the accommodation space that holds the cell-phone jointly, the top surface of backplate is equipped with above-mentioned winding device, first end is connected with the earplug, the third end is connected with the plug.

The utility model also provides an earphone, including earplug and plug, the earphone still includes above-mentioned winding device, first end with the earplug is connected, the third end with the plug connection.

To sum up, the utility model provides a winding device, this winding device can be used to on earphone or the data line. The first part of the lead is accommodated in the upper accommodating space and is wound on the ratchet wheel, a reset coil spring is arranged between the ratchet wheel and the seat body, and the second part of the lead is accommodated in the lower accommodating space. One end of the first part extending out of the winding device is connected with an earplug of the earphone, one end of the second part extending out of the winding device is connected with a plug of the earphone, and the first part and the second part can be electrically connected through a conductive component or can be integrally connected. When the reset coil spring is used, a user pulls the first part to enable the ratchet wheel to rotate relative to the base body, so that the length of the first part extending out of the base body can be adjusted, after pulling is stopped, the clamping part of the control switch is clamped with the teeth of the ratchet wheel, the reset coil spring deforms to generate reset force, and the first part keeps extending out of a fixed length at the moment. When the first part needs to be retracted, the shifting part of the control switch is operated to enable the clamping part to be separated from the teeth of the ratchet wheel, and the ratchet wheel automatically resets under the action of the resetting force of the resetting coil spring, so that the first part is coiled and retracted in the upper accommodating space. When the first part is electrically connected with the second part through the conductive assembly, the first part is pulled to enable the ratchet wheel to rotate, the first conducting part and the conductive elastic sheet rotate accordingly, the conductive elastic sheet is always elastically abutted against the conductive metal ring in the rotating process, so that the first part and the second part are electrically connected without power failure, and therefore the signal cannot be influenced by the pulling of the lead when a user listens to a song. The utility model discloses a winding device can be connected as an organic wholely with electronic equipment or protective housing, also can independently set up, design benefit, and convenient operation brings good product experience for the user.

Drawings

Fig. 1 is a perspective view of the winding device of the present invention mounted on the protective case of the mobile phone.

Fig. 2 is an exploded view of the mobile phone protection case with the winding device of fig. 1 mounted thereon according to an embodiment.

Fig. 3 is a side sectional view of the winding device of fig. 2 mounted to a protective case of a mobile phone.

Fig. 4 is an exploded view of the mobile phone protection case with the winding device of fig. 1 mounted thereon according to another embodiment.

Fig. 5 is a side sectional view of the wire winding device of fig. 4 mounted to a protective case of a cellular phone.

Detailed Description

Before the embodiments are described in detail, it is to be understood that the invention is not limited in its application to the details of construction and the arrangements of components set forth in the following description or illustrated in the drawings. The utility model discloses can be the embodiment that other modes realized. Also, it is to be understood that the phraseology and terminology used herein is for the purpose of description and should not be regarded as limiting. The use of "including," "comprising," "having," and the like, herein is meant to encompass the items listed thereafter and equivalents thereof as well as additional items. In particular, when "a certain element" is described, the present invention is not limited to the number of the element being one, and may include a plurality of the elements.

As shown in fig. 1-5, the present invention provides a winding device 10, the winding device 10 can be used to be mounted on an electronic device such as a mobile phone or a protective case such as a mobile phone protective case, in this embodiment, the winding device 10 is mounted on the back of the mobile phone protective case 12. Specifically, the mobile phone protection case 12 includes four frames 12a connected in a square shape and a back plate 12b connected to the top of the frames 12a, the bottom surface of the back plate 12b and the four frames 12a together form an accommodating space for accommodating the mobile phone, and the winding device 10 is installed on the top surface of the back plate 12 b. In other embodiments, the electronic device may also be a tablet computer or the like, and the protective case may also be a protective case for other electronic devices. The winding device 10 can be used for extending and retracting a wire such as an earphone wire or a data wire, in this embodiment, the winding device 10 is used for an earphone 14, and the earphone 14 includes an earplug 14a, a plug 14b and an earphone wire.

In this embodiment, the winding device 10 is mounted on the back of the protective case 12, and in some embodiments, the winding device 10 may also be mounted directly on the back of the mobile phone.

In the illustrated embodiment, the winding device 10 is generally cylindrical. In other embodiments, the winding device 10 may be implemented in other shapes. The winding device 10 includes a housing 16, a ratchet 18, an elastic member 20 and a wire. The base 16 includes a partition 16a and a side plate 16b connected to the periphery of the partition 16a, and the partition 16a is vertically connected to the side plate 16 b. The top surface of the partition 16a and the side plate 16b enclose an upper receiving space 22, and the bottom surface of the partition 16a and the side plate 16b enclose a lower receiving space 24. The ratchet 18 and the elastic member 20 are disposed in the upper receiving space 22. An annular support portion 26 is provided on the top surface of the partition 16a so as to project upward, and the bottom surface of the ratchet 18 is supported on the support portion 26. The top surface of the partition 16a is also provided with a first positioning post 28, and the first positioning post 28 is disposed near the periphery of the support portion 26.

The ratchet 18 is rotatably disposed in the upper receiving space 22. The side plate 16b is provided with a control switch 30 for controlling the ratchet 18 to be maintained in a rotated position and controlling the ratchet 18 to be reset to its initial position. More specifically, the side plate 16b is provided with an opening 32 on a side wall of the upper receiving space 22 for accommodating the control switch 30, the opening 32 includes a first opening portion 34 extending along a circumferential direction of the side plate 16b and a second opening portion 36 extending along an axial direction of the side plate 16b and communicating with the first opening portion 34, and the control switch 30 is a shift lever, and one end of the shift lever is connected to a side wall of an end of the first opening portion 34 away from the second opening portion. In the present embodiment, the opening 32 is implemented in an L shape. The shifting lever comprises a first shifting lever part and a second shifting lever part which are integrally connected in an L shape, the first shifting lever part is accommodated in the first opening part 34, the second shifting lever part is accommodated in the second opening part 36, and one end, far away from the second shifting lever part, of the first shifting lever part is connected to the side wall of the end part of the first opening part 34, so that the shifting lever can slightly swing in the opening 32 along the direction perpendicular to the side plate 16b under the external force control. The shifting lever is provided with a clamping portion 38 protruding out of the inner side face of the side plate 16b and a shifting portion 40 protruding out of the top face of the side plate 16b for operation of a user, wherein the clamping portion 38 is used for clamping with teeth of the ratchet wheel 18. In this embodiment, the clamping portion 38 is formed by extending toward the upper receiving space 22 from the connecting portion of the first toggle rod portion and the second toggle rod portion, and the toggle portion 40 is formed by extending upward from the top surface of the second toggle rod portion.

It should be understood that the above-mentioned structure and position of the control switch are designed to be only an embodiment of the present invention, and in other embodiments, the control switch may be disposed at other positions of the seat body, and disposed in other structures, for example, implemented as a push switch or a control switch with other structural forms, which is not limited by the present invention.

The side plate 16b is provided with a first outlet 42 communicated with the upper receiving space 22 and a second outlet 44 communicated with the lower receiving space 24, in the illustrated embodiment, the first outlet 42 and the second outlet 44 are arranged in parallel along the axial direction of the side plate 16b, and the arrangement positions of the first outlet 42 and the second outlet 44 and the arrangement position of the shift lever 30 are symmetrically distributed along the radial direction of the seat body 16.

The winding device 10 further includes a surface cover 46 and a bottom cover, the surface cover 46 is disposed on the top surface of the side plate 16b, and the bottom cover is disposed on the bottom surface of the side plate 16 b. Therefore, the upper receiving space 22 is defined by the top surface of the partition 16a, the side plate 16b, and the surface cover 46. In the illustrated embodiment, the face cover 46 is snap-fit to the side plate 16b, specifically, a snap groove 48 is provided on the top surface of the side plate 16, and a corresponding snap pin (not shown) is provided on the bottom surface of the face cover 46 to mate with the snap groove 48, and the snap pin is snap-fit into the snap groove 48 during installation. The surface cover 46 is provided with a relief notch 46a corresponding to the position of the toggle part 40, so that the toggle part 40 protrudes from the top surface of the surface cover 46 when the surface cover 46 is covered on the side plate 16b, thereby facilitating the user to toggle. In this embodiment, the winding device 10 is connected to the mobile phone protecting case 12 as a whole, and therefore, no bottom cover is provided. The bottom surface of the side plate 16b is integrally connected to the top surface of the back plate 12b of the handset protective case 12 by adhesion, for example, so that the lower receiving space 24 is surrounded by the bottom surface of the partition 16a, the side plate 16b and the top surface of the back plate 12 b. In other embodiments, the winding device 10 can be separately provided, and a bottom cover needs to be provided at the bottom of the seat 16.

An elastic member 20 is connected between the ratchet 18 and the partition 16a for generating a restoring force to the ratchet 18. In the present embodiment, the elastic member 20 is implemented as a return coil spring 20. More specifically, a second positioning column 50 is disposed on the bottom surface of the ratchet 18, the first positioning column 28 and the second positioning column 50 are disposed in a staggered manner, and the return coil spring 20 is coiled between the first positioning column 28 and the second positioning column 50. The return coil spring 20 has opposite first and second ends 20a, 20b, the first end 20a being located inside the coil of the return coil spring 20, the second end 20b being located outside the coil of the return coil spring 20, the first end 20a being fixedly connected to the first positioning post 28, and the second end 20b being fixedly connected to the second positioning post 50. In the illustrated embodiment, the first end 20a and the second end 20b are both curved and hooked, the hooked first end 20a is fixedly sleeved on the first positioning post 28, and the hooked second end 20b is fixedly sleeved on the second positioning post 50. In other embodiments, the elastic member 20 may be implemented as other elastic elements, and the connection between the two ends of the return coil spring and the positioning column may be other connection manners.

In the present embodiment, the winding device 10 is applied to the earphone 14, and thus the wire is an earphone wire of the earphone 14. The wire includes a first portion 52 and a second portion 54, the first portion 52 being disposed in the upper receiving space 22 and wound around the ratchet 18, the second portion 54 being disposed in the lower receiving space 24. The first portion 52 has first and second opposite ends 52a, 52b, and the second portion 54 has third and fourth opposite ends 54a, 54 b. The second end 52b passes through the ratchet 18 and the partition 16a to be electrically connected to the fourth end 54b, the first end 52a extends out of the base 16 through the first outlet 42 to be connected to the ear plug 14a of the earphone 14, the third end 54a extends out of the base 16 through the second outlet 44 to be connected to the plug 14b of the earphone 14, and the plug 14b can be inserted into the corresponding interface of the protective case 12 and inserted into the earphone jack of the mobile phone in the protective case 12.

In the embodiment shown in fig. 1-3, the second end 52b and the fourth end 54b are electrically connected by a conductive element. Specifically, the second end 52b is provided with a plurality of first conductive connection portions 56, the fourth end 54b is provided with a plurality of second conductive connection portions 58, the first conductive connection portions 56 and the second conductive connection portions 58 are electrically connected through a conductive element, and the conductive element is disposed at the center position of the ratchet 18. In the illustrated embodiment, the first and second lead portions 56 and 58 are each provided in a number of 4.

The central position of the top surface of the ratchet 18 is provided with a winding post 60 protruding upwards, the first part 52 of the conducting wire is coiled around the winding post 60, the central position of the top surface of the partition plate 16a is provided with a mounting post 62 for mounting a conducting component, the mounting post 62 is positioned at the central position in the supporting part 26, namely the central position of the partition plate 16a, the ratchet 18 is provided with a through hole 64 penetrating through the winding post 60 for accommodating the mounting post 62, and the through hole 64 is also positioned at the central position of the ratchet 18. When the ratchet 18 is mounted, the through hole 64 is sleeved on the mounting post 62, and the bottom surface of the ratchet 18 is supported on the supporting portion 26. The conductive assembly comprises a plurality of conductive metal rings 66 and a plurality of conductive elastic sheets 68, and the number of the conductive metal rings 66 and the number of the conductive elastic sheets 68 are 4 corresponding to the number of the first conducting parts 56 and the second conducting parts 58. The 4 conductive metal rings 66 are stacked in the axial direction, the 4 conductive elastic pieces 68 are also stacked, each conductive metal ring 66 extends downward from the inner side surface to the outer side of the bottom of the 4 conductive metal rings 66 and extends to the outer side of the 4 conductive metal rings 66 to form a solder leg 70, and the solder legs 70 of the 4 conductive metal rings 66 are circumferentially staggered, for example, the heights of the connection positions of the 4 solder legs 70 and the respective conductive metal rings 66 are sequentially reduced in the circumferential direction. The outer wall surface of the mounting column 62 is provided with 4 mounting grooves 72, the 4 conductive metal rings 66 are respectively installed and fixed in the 4 mounting grooves 72, the 4 welding feet 70 penetrate through the mounting column 62 from the bottom surfaces of the respective mounting grooves 72 and extend out of the bottom of the mounting column 62 to the lower accommodating space 24, and the 4 welding feet 70 are respectively welded and connected with the second guiding and connecting part 58 located in the lower accommodating space 24.

The winding post 60 is provided with a wire inlet groove 74 along the radial direction, one end of the wire inlet groove 74 is communicated with the through hole 64, the other end is communicated with the outside of the winding post 60, and when the ratchet wheel 18 is located at the initial position, a wire inlet of the wire inlet groove 74 is over against the first outlet 42. In the illustrated embodiment, the through hole 64 is provided at a central position of the winding post 60. One end of the wire inlet groove 74, which is communicated with the through hole 64, extends towards one side to form a slot 76, the second end 52b is accommodated in the wire inlet groove 74, the 4 conductive elastic pieces 68 are vertically stacked and accommodated in the slot 76, each conductive elastic piece 68 is provided with a welding end 68a and an elastic end 68b, in the illustrated embodiment, the elastic end 68b is in a bent curved structure, the welding end 68a is in welding connection with the first conductive part 56, and the elastic end 68b elastically abuts against the outer wall surface of the corresponding conductive metal ring 66 to realize electrical connection.

When the user pulls the earplug 14a outwardly, the first portion 52 extends outwardly such that the ratchet 18 rotates relative to the housing 16, and the return coil spring 20 is elastically deformed and generates a return force. When the first portion 52 extends outwardly by a desired length, the earplug 14a stops being pulled, the ratchet 18 stops rotating, the snap 38 snaps over the teeth of the ratchet 18 to maintain the ratchet 18 in the stopped position, and the first portion 52 remains extended by a fixed length. When it is desired to retract the first portion 52, the user operates the toggle portion 40 toward the outside of the side plate 16b to disengage the snap portion 38 from the teeth of the ratchet gear, and the ratchet gear 18 is rotated by the restoring force of the restoring coil spring 20 and restored to its original position, so that the first portion 52 is wound and retracted into the upper receiving space 22. In addition, when the user pulls the first portion 52 outward to rotate the ratchet 18 relative to the seat 16, the first conductive connection portion 56 of the first portion 52 is also rotated, and the conductive metal ring 66 is welded to the second conductive connection portion 58, and the elastic end 68b of the conductive elastic sheet 68 is elastically pressed against the conductive metal ring 66, the ratchet 18 rotates to drive the conductive elastic sheet 68 to rotate therewith, the elastic end 68b always presses against the conductive metal ring 66 without separating during the rotation of the conductive elastic sheet 68, so that the first part 52 and the second part 54 are electrically connected without power failure, therefore, the user can not influence the signal by pulling the conducting wire while listening to the song, by connecting the second terminal 52b and the fourth terminal 54b through the conducting component, when the first portion 52 of the lead is pulled to change its length extending out of the seat 16, the second portion 54 of the lead is not affected.

In the embodiment shown in fig. 4-5, the difference from the above embodiment is that the second end 52b and the fourth end 54b of the wire are integrally connected, and the second portion 54 of the wire is coiled and received in the lower receiving space 24. More specifically, the central position of the top surface of the ratchet 18 is provided with a winding post 78 protruding upwards, the first part 52 of the wire is coiled around the winding post 78, the central position of the winding post 78 is provided with a through hole 80, the winding post 78 is further provided with a wire inlet groove 82, one end of the wire inlet groove 82 is communicated to the through hole 80, and the other end of the wire inlet groove 82 is communicated to the outside of the winding post 78. The partition 16a is provided with a wire passing hole 84, and in the present embodiment, the wire passing hole 84 is provided along the inner wall surface of the support portion 26. The second end 52b is integrally connected to the fourth end 54b via a wire inlet groove 82, a through hole 80, and a wire passage hole 84 in this order. Since the second portion is coiled and received in the lower receiving space 24, the second portion is scattered when the first portion is drawn outward, and is reset when the first portion is reset.

To sum up, the utility model provides a winding device, this winding device can be used to on earphone or the data line. The first part of the lead is accommodated in the upper accommodating space and is wound on the ratchet wheel, a reset coil spring is arranged between the ratchet wheel and the seat body, and the second part of the lead is accommodated in the lower accommodating space. One end of the first part extending out of the winding device is connected with an earplug of the earphone, one end of the second part extending out of the winding device is connected with a plug of the earphone, and the first part and the second part can be electrically connected through a conductive component or can be integrally connected. When the reset coil spring is used, a user pulls the first part to enable the ratchet wheel to rotate relative to the base body, so that the length of the first part extending out of the base body can be adjusted, after pulling is stopped, the clamping part of the control switch is clamped with the teeth of the ratchet wheel, the reset coil spring deforms to generate reset force, and the first part keeps extending out of a fixed length at the moment. When the first part needs to be retracted, the shifting part is operated outwards of the seat body to enable the clamping part to be separated from teeth of the ratchet wheel, the ratchet wheel automatically resets under the action of the resetting force of the resetting coil spring, and the first part is coiled and retracted in the upper accommodating space. When the first part is electrically connected with the second part through the conductive assembly, the first part is pulled to enable the ratchet wheel to rotate, the first conducting part and the conductive elastic sheet rotate accordingly, the conductive elastic sheet is always elastically abutted against the conductive metal ring in the rotating process, so that the first part and the second part are electrically connected without power failure, and therefore the signal cannot be influenced by the pulling of the lead when a user listens to a song. The utility model discloses a winding device can be connected as an organic wholely with electronic equipment or protective housing, also can independently set up, design benefit, and convenient operation brings good product experience for the user.

The concepts described herein may be embodied in other forms without departing from the spirit or characteristics thereof. The particular embodiments disclosed should be considered illustrative rather than limiting. The scope of the invention is, therefore, indicated by the appended claims rather than by the foregoing description. Any changes which come within the meaning and range of equivalency of the claims are to be embraced within their scope.

Claims (10)

1. A winding device, characterized in that it comprises:

the base comprises a partition board and a side board connected to the periphery of the partition board, the top surface of the partition board and the side board enclose to form an upper accommodating space, and the bottom surface of the partition board and the side board enclose to form a lower accommodating space;

the ratchet wheel is rotatably arranged in the upper accommodating space;

the control switch is used for controlling the ratchet wheel to maintain a rotated position and controlling the ratchet wheel to reset to an initial position;

the elastic piece is connected between the ratchet wheel and the partition plate and used for generating resetting force on the ratchet wheel; and

a wire including a first portion disposed in the upper receiving space and wound around the ratchet, the first portion having opposite first and second ends; the second part is arranged in the lower accommodating space and is provided with a third end and a fourth end which are opposite, the first end and the third end respectively extend out of the seat body, and the second end and the fourth end are electrically connected with each other.

2. The winding device according to claim 1, wherein a winding post protrudes from a top surface of the ratchet wheel, the first portion is wound around the winding post, the second end is provided with a plurality of first conductive portions, the fourth end is provided with a plurality of second conductive portions, the first conductive portions and the second conductive portions are electrically connected through a conductive element, and the conductive element is located at a center position of the ratchet wheel.

3. The winding device according to claim 2, wherein the conductive assembly comprises a plurality of conductive metal rings and a plurality of conductive elastic pieces, the plurality of conductive metal rings are stacked in the axial direction, each conductive metal ring extends to form a solder leg, and each solder leg is connected with a corresponding second conductive part in a welding manner; each conductive elastic sheet is provided with a welding end and an elastic end, each welding end is connected with one corresponding first conducting part in a welding mode, and each elastic end is in elastic butt joint with one corresponding conductive metal ring.

4. The winding device according to claim 3, wherein a mounting post for mounting the conductive metal ring is protruded from a central position of the partition, a plurality of mounting grooves are formed around an outer surface of the mounting post, the plurality of conductive metal rings are respectively mounted and fixed in the plurality of mounting grooves, and a leg of each conductive metal ring extends into the lower receiving space; the center of the ratchet wheel is provided with a through hole for containing the mounting column, the winding column is provided with a wire inlet groove communicated with the through hole, one end of the wire inlet groove communicated with the through hole extends towards one side to form a groove, the second end of the wire inlet groove is contained in the wire inlet groove, and the conductive elastic sheets are stacked in the groove.

5. The winding device according to claim 1, wherein a winding post is protruded from a top surface of the ratchet wheel, the first portion is wound around the winding post, a through hole is formed at a center position of the ratchet wheel, a wire inlet groove communicated with the through hole is formed in the winding post, a wire passing hole is formed in the partition plate, the second end is integrally connected with the fourth end through the wire inlet groove, the through hole and the wire passing hole in sequence, and the second portion is wound and accommodated in the lower accommodating space.

6. The winding device according to claim 1, wherein the side plate is provided with an opening on a side wall of the upper receiving space for receiving the control switch, the opening comprising a first opening portion extending along an axial direction of the side plate and a second opening portion extending along the axial direction of the side plate and communicating with the first opening portion; the control switch is a shifting lever, one end of the shifting lever is connected to the side wall of one end, away from the second opening, of the first opening, the other end of the shifting lever is provided with a clamping portion protruding out of the inner side face of the side plate and a shifting portion protruding out of the top face of the side plate for operation, and the clamping portion is used for being clamped with the teeth of the ratchet wheel.

7. The winding device according to claim 6, further comprising a surface cover and a bottom cover, wherein the surface cover is disposed on the top surface of the side plate, the bottom cover is disposed on the bottom surface of the side plate, the side edge of the surface cover is provided with a relief notch, and the shifting portion passes through the relief notch and is exposed out of the top of the surface cover.

8. The winding device according to claim 1, wherein the elastic member is a return coil spring, a first positioning column is disposed on the top surface of the partition, a second positioning column is disposed on the bottom surface of the ratchet wheel, the first positioning column and the second positioning column are arranged in a staggered manner, and the return coil spring is wound between the first positioning column and the second positioning column.

9. A mobile phone protection shell comprises a frame and a back plate connected to the top of the frame, wherein the bottom surface of the back plate and the frame jointly form an accommodating space for accommodating a mobile phone, the mobile phone protection shell is characterized in that the winding device according to any one of claims 1-8 is arranged on the top surface of the back plate, an earplug is connected to the first end, and a plug is connected to the third end.

10. An earphone comprising an ear plug and a plug, characterized in that the earphone further comprises a winding device according to any one of claims 1-8, the first end being connected to the ear plug and the third end being connected to the plug.

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