Wire winding device and charging apparatus

Abstract

The utility model provides a kind of winding device and charging equipment, it is related to electronic equipment technical field, winding device includes shell, winding reel and sound production component, shell inside is equipped with fixed shaft, fixed shaft is equipped with mounting groove, winding reel recess has rotary groove in its end face, winding reel is set in fixed shaft by rotary groove to be rotatably installed in shell, rotary groove is equipped with protruding portion in its bottom wall position, sound production component is located in mounting groove, sound production component includes abutting member and elastic member, the end of abutting member and bottom wall abut, elastic member is connected between abutting member and shell, winding reel rotates, abutting member abuts bottom wall, then abuts protruding portion on bottom wall, bottom wall and protruding portion exist height difference, abutting member and protruding portion collision occur sound, user can perceive how long data line has been pulled out by sound, winding reel rotates, abutting member abuts bottom wall or protruding portion, exerting rotation resistance, reduce rotation speed, avoid data line head to hit user hand after flailing.

Description

Technical Field

[0001] This utility model relates to the field of electronic equipment technology, and in particular to providing a wire winding device and a charging device. Background Technology

[0002] Data cables are widely used in various electronic products, such as mobile phone data cables and tablet data cables. To facilitate the storage and carrying of data cables of a certain length, they are typically wound onto a reel in a winding mechanism. When the user needs the data cable, they simply pull out the desired length. To rewind, the reel rotates under the action of a spring in the winding mechanism, thus rewinding the pulled-out cable back onto the reel. However, the existing winding mechanism has the following shortcomings: Firstly, when using the data cable, the user may unintentionally pull too hard, causing the cable to be pulled out too far from the reel. Secondly, when winding the data cable, the spring drives the reel to rotate, gradually increasing the rotation speed of the reel, causing the pulled-out cable end to swing and potentially hit the user or bystanders, seriously affecting the user experience. Therefore, it is necessary to improve the existing winding mechanism. Utility Model Content

[0003] The purpose of this invention is to provide a winding device to solve the technical problems existing in the above-mentioned existing winding structures.

[0004] To achieve the above objectives, the technical solution of this utility model embodiment is as follows: A winding device, comprising: The housing has a fixed shaft inside, the fixed shaft has a mounting groove inside, and the fixed shaft also has a passage that communicates with the mounting groove; A winding reel has a recessed rotating groove on its end face. It is rotatably mounted in the housing by being sleeved on the fixed shaft through the rotating groove. The rotating groove has at least one protrusion on its bottom wall. The rotating groove is connected to the through port. The sound-generating component includes an abutment and an elastic member, both of which are disposed within the mounting groove. The elastic member is connected between the abutment and the housing. One end of the abutment abuts against the elastic member, and the other opposite end passes through the passage and abuts against the bottom wall or the protrusion on the bottom wall.

[0005] Furthermore, The fixed shaft has a reinforcing part protruding along its axial direction and connected to the housing, and the bottom wall has a through hole for the reinforcing part to pass through. The protrusions include multiple portions, which are arranged around the through hole.

[0006] Furthermore, The bottom wall is provided with an auxiliary rotating ring, and the fixed shaft is recessed at one end near the auxiliary rotating ring to form an auxiliary rotating groove for the auxiliary rotating ring to be inserted. In the radial direction along the fixed axis, the passage is located between the reinforcing part and the side wall of the auxiliary rotating groove.

[0007] Furthermore, One end of the protrusion is connected to the auxiliary rotating ring, and the other opposite end extends radially along the rotating groove.

[0008] Furthermore, The abutting member has an abutting portion at one end that abuts against the bottom wall, and the abutting member also includes a guiding portion disposed in the mounting groove; Wherein, the radial dimension of the through-hole is greater than the radial dimension of the abutment portion, and the radial dimension of the through-hole is less than the radial dimension of the guided portion.

[0009] Furthermore, The guided portion includes a guided surface; The housing has a rotation limiting member protruding from the mounting groove at a position corresponding to the fixed shaft. The side wall of the mounting groove is provided with a first guide surface, and the outer wall of the rotation limiting member is provided with a second guide surface. The first guide surface and the second guide surface together form a guide surface that is in clearance fit with the guided surface.

[0010] Furthermore, The abutting part is hemispherical, the guided surface is cylindrical, and the first guide sub-surface and the second guide sub-surface each include an arc surface that matches the guided surface; Alternatively / and, a connecting portion is provided between the abutting portion and the guided portion, wherein the radial dimension of the guided portion is greater than the radial dimension of the connecting portion.

[0011] Furthermore, The abutting member has an abutting portion at one end that abuts against the bottom wall. The abutting portion is tapered near the bottom wall. The abutting portion includes a first arc-shaped abutting surface and a second arc-shaped abutting surface connected to the first arc-shaped abutting surface.

[0012] Furthermore, The mounting groove includes a first guide surface and a second guide surface that are spaced apart and arranged in parallel. The abutment also includes a guided portion disposed in the mounting groove. The guided portion includes a first guided surface that contacts the first guide surface and a second guided surface that contacts the second guide surface.

[0013] Furthermore, The first guide surface is recessed to form a first rotating groove, the second guide surface is recessed to form a second rotating groove, the first receiving surface is protruded with a first rotating column placed in the first rotating groove, the second receiving surface is protruded with a second rotating column placed in the second rotating groove, and the first rotating column and the second rotating column are arranged coaxially.

[0014] Furthermore, The abutment is provided with a first elastic element positioning structure at one end away from the bottom wall, and a second elastic element positioning structure is provided on the housing corresponding to the position of the abutment. The two ends of the elastic element are respectively connected to the first elastic element positioning structure and the second elastic element positioning structure. The first elastic element positioning structure and the second elastic element positioning structure can be at least one of the following: a positioning post, a storage groove, and a wall abutting.

[0015] Furthermore, The protrusion is tapered toward the abutment, and the protrusion includes a first planar wall, a second planar wall, and an arc-shaped wall connecting the first planar wall and the second planar wall. The first planar wall and the second planar wall are arranged at a preset angle. Alternatively / and, the protrusions are multiple and are arranged at intervals along the circumference of the rotating groove; Alternatively / and, both the abutment and the elastic element are arranged relatively parallel to the rotation axis of the winding reel.

[0016] Furthermore, The housing includes a bottom shell and a top shell. The fixed shaft is disposed on the bottom shell, and a sound transmission port communicating with the mounting groove is provided on the bottom wall of the bottom shell.

[0017] Another objective of this utility model is to provide a charging device, including a charging cable and a winding device as described in any of the preceding claims, wherein one end of the charging cable is wound around the winding spool and the other end extends to the outside of the housing.

[0018] Compared with the prior art, the embodiments of this utility model have at least the following technical effects: The cable winding device of this utility model embodiment includes a housing, a cable reel, and a sound-generating component. A fixed shaft is provided inside the housing, and the fixed shaft has a mounting groove. The cable reel has a rotating groove recessed on its end face. The cable reel is fitted onto the fixed shaft through the rotating groove to be rotatably mounted inside the housing. A protrusion is provided on the bottom wall within the rotating groove. The sound-generating component is located within the mounting groove and includes an abutment and an elastic element. One end of the abutment abuts against the bottom wall, and the elastic element connects the abutment and the housing. When the cable reel rotates, the abutment, under the action of the elastic element, abuts against the bottom wall and then against the protrusion on the bottom wall. There is a height difference between the bottom wall and the protrusion; the collision between the abutment and the protrusion produces a sound. The user can perceive the length of the data cable that has been pulled out through the sound. When the cable reel rotates back, the abutment abuts against the bottom wall or the protrusion, applying rotational resistance, reducing the rotational speed, and preventing the data cable head from swinging and hitting the user's hand.

[0019] The charging device of this utility model embodiment includes the aforementioned winding device, and has the same technical concept as the aforementioned winding device, and therefore has the same technical effect, which will not be repeated here. Attached Figure Description

[0020] Figure 1 This is a cross-sectional view of the winding device in one embodiment of the present invention; Figure 2 This is a cross-sectional view of the winding device from another angle in one embodiment of the present invention; Figure 3 for Figure 2 Schematic diagram of the structure of the medium-thickness coil; Figure 4 for Figure 2 Schematic diagram of the middle abutment component; Figure 5 for Figure 2 A sectional view of the fixed axis in the middle; Figure 6 This is a schematic diagram of the structure of the limiting component being disposed in the housing in one embodiment of the present invention; Figure 7 This is a schematic diagram of the abutment member in another embodiment of the present invention; Figure 8 This is a schematic diagram of the fixed shaft structure in another embodiment of the present invention; Figure 9 This is a schematic diagram of the structure of the abutment member installed inside the fixed shaft in another embodiment of the present invention; Figure 10 This is a schematic diagram of the fixed shaft in another embodiment of the present invention; Figure 11 This is a schematic diagram of the structure of the abutment member installed on the fixed shaft in another embodiment of the present invention.

[0021] Explanation of icon numbers: 10. Housing; 11. Bottom shell; 110. Sound port; 12. Front shell; 20. Winding reel; 21. Bottom wall; 210. Through hole; 22. Rotating groove; 220. Protrusion; 2200. First planar wall; 2201. Second planar wall; 2202. Arc-shaped wall; 221. Auxiliary rotating ring; 30. Sound-generating component; 31. Abutting member; 310. Abutting part; 3100. First arc-shaped abutting surface; 3101. Second arc-shaped abutting surface; 311. Guided part; 3110. First guided surface; 3111. Second guided surface; 3112. Guided surface; 312. First elastic element positioning structure; 313. Second elastic element positioning structure; 314. Connecting part; 315. First rotating column; 316. Second rotating column; 32. Elastic element; 40. Fixed shaft; 41. Mounting groove; 410. First guide surface; 4100. First rotating groove; 411. Second guide surface; 4110. Second rotating groove; 412. First guide sub-surface; 42. Auxiliary rotating groove; 43. Through port; 44. Reinforcing part; 50. Limited transfer component; 51. Second guide surface. Detailed Implementation

[0022] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used in this specification of this utility model is for the purpose of describing particular embodiments only and is not intended to limit the utility model. In the following description, the expression "some embodiments" refers to a subset of all possible embodiments; however, it should be understood that "some embodiments" can be the same subset or different subsets of all possible embodiments and can be combined with each other without conflict.

[0023] It should also be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "inner," "outer," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0024] Please see Figure 1-11As shown, in some embodiments of this utility model, a winding device includes a housing 10, a winding reel 20, and a sound-generating component 30. A fixed shaft 40 is provided inside the housing 10, and the fixed shaft 40 has a mounting groove 41. The fixed shaft 40 also has a passage 43 communicating with the mounting groove 41. A rotating groove 22 is recessed on the end face of the winding reel 20. The winding reel 20 is sleeved on the fixed shaft 40 through the rotating groove 22 to be rotatably mounted inside the housing 10. The rotating groove 22 and the passage 43... The rotating groove 22 has a protrusion 220 on its bottom wall 21. The sound-generating component 30 includes an abutment 31 and an elastic element 32. Both the abutment 31 and the elastic element 32 in the sound-generating component 30 are disposed in the mounting groove 41. The elastic element 32 is connected between the abutment 31 and the housing 10. One end of the abutment 31 abuts against the elastic element 32, and the other end passes through the through-hole 43 and abuts against the bottom wall 21 or the protrusion 220 on the bottom wall 21. In this embodiment, the abutment 31 and the elastic element 32 in the sound-generating component 30 are arranged relatively parallel to the rotation axis of the winding reel 20. In other embodiments, the specific relative positions of the abutment 31 and the elastic element 32 with respect to the winding reel 20 can be set as needed. When the elastic member 32 acts on the abutting member 31, it pushes one end of the abutting member 31 to elastically abut against the bottom wall 21. When the winding reel 20 rotates, one end of the abutting member 31 abuts against the bottom wall 21 or the protrusion 220.

[0025] When using the cable reel 20, if a data cable is wound on the reel, pulling out the data cable will cause the reel 20 to rotate. The abutment 31, under the action of the elastic member 32, first abuts against the bottom wall 21, and then against the protrusion 220, repeating this cycle. Because of the height difference between the protrusion 220 and the bottom wall 21, the abutment 31 will collide with the protrusion 220, producing a sound to remind the user how many fixed angles the reel 20 has rotated. The angle of rotation of the reel 20 corresponds to the length of data cable pulled out. The user can perceive the length of the data cable pulled out through sound. When the user releases their hand, the reel 20 rotates back. The abutment 31, under the action of the elastic member 32, will still abut against the bottom wall 21 or the protrusion 220, applying rotational resistance to the reel 20, reducing the rotational speed, and preventing the data cable head from swinging and hitting the user's hand, thus improving the user experience. In this embodiment, as... Figure 3As shown, four protrusions 220 are provided, spaced apart circumferentially along the rotating groove 22. The abutment 31 collides with the protrusions 220 to produce a sound, reminding the user that the angle of the cable reel 20 has rotated 90 degrees. The cable reel 20 can then indicate that a unit length of data cable has been pulled out. In other embodiments, the protrusions 220 can be one, two, three, or more. Depending on the number of protrusions 220, the angle by which the cable reel 20 rotates can be determined for each collision that produces a sound, thus indicating that a unit length of data cable has been pulled out of the cable reel 20.

[0026] Please see Figure 2-3 As shown, in one embodiment of the present invention, the fixed shaft 40 is provided with a reinforcing part 44 connected to the housing 10 along its axial direction. The bottom wall 21 is provided with a through hole 210 for the reinforcing part 44 to pass through. The protrusion 220 includes four parts, which are arranged around the through hole 210. In this embodiment, the fixed shaft 40 is provided with a reinforcing part connected to the housing 10. The fixed shaft 40 can be stably installed in the housing 10. The fixed shaft 40 and the housing 10 are fixed in relative position, which facilitates the stable rotation of the winding reel 20 in the housing 10.

[0027] Please see Figure 1 as well as Figure 3-4 As shown, in one embodiment of this utility model, the bottom wall 21 is provided with an auxiliary rotating ring 221, and the fixed shaft 40 is recessed at one end near the auxiliary rotating ring 221 to form an auxiliary rotating groove 42 for the auxiliary rotating ring 221 to be inserted. The auxiliary rotating ring 221 and the auxiliary rotating groove 42 work together to make the winding reel 20 rotate more stably on the housing 10. The abutment 31 can stably switch abutment between the bottom wall 21 and the protrusion 220. Furthermore, along the radial direction of the fixed shaft 40, the through port 43 is located between the side wall of the reinforcing part 44 and the auxiliary rotating groove 42, resulting in a compact structure.

[0028] For further details, please refer to Figure 3 As shown, in one embodiment of the present invention, one end of the protrusion 220 is connected to the auxiliary rotating ring 221, and the other opposite end extends radially along the rotating groove 22. The protrusion 220 can be stably disposed on the bottom wall 21.

[0029] Please see Figure 3-6As shown, in one embodiment of the present invention, the abutting member 31 is provided with an abutting portion 310 at one end abutting against the bottom wall 21. The abutting member 31 also includes a guiding portion 311 disposed in the mounting groove 41. The radial dimension of the passage 43 is greater than the radial dimension of the abutting portion 310, and the radial dimension of the passage 43 is less than the radial dimension of the guiding portion 311. When the abutting portion 310 of the abutting member 31 passes through the passage 43, the guiding portion 311 can be used as a stop step. Furthermore, the guided portion 311 includes a guided surface 3112. The housing 10 has a protruding rotation limiting member 50 at a position corresponding to the fixed shaft 40, which extends into the mounting groove 41. The side wall of the mounting groove 41 is provided with a first guide sub-surface 412, and the outer wall of the rotation limiting member 50 is provided with a second guide sub-surface 51. The first guide sub-surface 412 and the second guide sub-surface 51 surround each other to form a guide surface that is clearance-fitted with the guided surface 3112. More specifically, the abutment portion 310 is hemispherical, the guided surface 3112 is cylindrical, and the first guide sub-surface 412 and the second guide sub-surface 51 respectively include a guide surface that is clearance-fitted with the guided surface 3112. The arc surface of the mating surface 3112 is configured such that the abutting part 310 of the abutting member 31 is set in a hemispherical shape. When the winding reel 20 rotates, the abutting part 310 of the abutting member 31 can smoothly pass over the protrusion 220 under the action of the elastic member 32. The abutting member 31 can smoothly switch abutting between the bottom wall 21 and the protrusion 220. In the mounting groove 41, the cylindrical guide surface guides the cylindrical guided surface, realizing stable guidance of the linear movement of the abutting member 31 towards or away from the bottom wall 21. The abutting member 31 can stably switch abutting between the bottom wall 21 and the protrusion 220. In addition, a connecting part 314 is connected between the abutting part 310 and the guiding part 311. The radial dimension of the guiding part 311 is larger than the radial dimension of the connecting part 314, and the radial dimension of the connecting part 314 is smaller than the radial dimension of the passage 43. The abutting part 310 and the connecting part 314 can smoothly enter and exit the passage 43.

[0030] Please see Figure 7-9As shown, in one embodiment of this utility model, the abutting member 31 has an abutting portion 310 at one end abutting against the bottom wall 21. The abutting portion 310 tapers towards the bottom wall 21. The abutting portion 310 includes a first arc-shaped abutting surface 3100 and a second arc-shaped abutting surface 3101 connected to the first arc-shaped abutting surface 3100. By setting the first arc-shaped abutting surface 3100 and the second arc-shaped abutting surface 3101 to abut against the bottom wall 21 or the protrusion 220, when the reel 20 rotates, the abutting portion 310 of the abutting member 31 can smoothly pass over the protrusion 220 under the action of the elastic member 32, and the abutting member 31 can smoothly switch abutting between the bottom wall 21 and the protrusion 220. Further details can be found in the following section. Figure 7-9 As shown, in one embodiment of this utility model, the mounting groove 41 includes a first guide surface 410 and a second guide surface 411 arranged at intervals and in parallel. The abutment member 31 also includes a guided portion 311 disposed within the mounting groove 41. The guided portion 311 includes a first guided surface 3110 contacting the first guide surface 410 and a second guided surface 3111 contacting the second guide surface 411. The spaced and parallel arrangement of the first guide surface 410 and the second guide surface 411 guides the movement of the abutment member 31 towards or away from the bottom wall 21. Furthermore, the abutment member 31 can exhibit a certain degree of oscillation during its vertical linear movement, allowing it to smoothly switch abutment between the bottom wall 21 and the protrusion 220. Further details can be found in the following description. Figure 10-11 As shown, in one embodiment of the present invention, the first guide surface 410 is recessed to form a first rotating groove 4100, the second guide surface 411 is recessed to form a second rotating groove 4110, the first receiving surface 3110 is protruding to provide a first rotating column 315 placed in the first rotating groove 4100, and the second receiving surface 3111 is protruding to provide a second rotating column 316 placed in the second rotating groove 4110. The first rotating column 315 and the second rotating column 316 are arranged coaxially. In this embodiment, the abutment 31 swings around the axis of the first rotating column 315 and the second rotating column 316 in the mounting groove 41. At the same time, the first guide surface 410 and the second guide surface 411 are provided at intervals and arranged in parallel to guide the swinging motion of the abutment 31. The abutment 31 can smoothly enter and exit the through port 43 in a swinging motion and then switch abutment between the bottom wall 21 and the protrusion 220.

[0031] In some embodiments of this utility model, a first elastic element positioning structure 312 is provided at the end of the abutment 31 away from the bottom wall 21, and a second elastic element positioning structure 313 is provided on the housing 10 corresponding to the position of the abutment 31. The two ends of the elastic element 32 are respectively connected to the first elastic element positioning structure 312 and the second elastic element positioning structure 313. The first elastic element positioning structure 312 and the second elastic element positioning structure 313 can be one of a positioning post, a storage groove, or an abutment wall. For details, please refer to [link to relevant documentation]. Figure 2 as well as Figure 4 As shown, or refer to Figure 7-9 As shown, in one embodiment of this utility model, the first elastic element positioning structure 312 is a positioning post, and the second elastic element positioning structure 313 is an abutment wall, which can be formed by the inner wall of the housing 10. The elastic element 32 is a compression spring, with one end of the compression spring sleeved on the first elastic element positioning structure 312 and the other opposite end sleeved on the second elastic element positioning structure 313. The elastic element 32 applies a stable force to the abutment 31, and the abutment 31 can stably abut against the bottom wall 21 or the protrusion 220 under the action of the elastic element 32. In other embodiments, the first elastic element positioning structure 312 and the second elastic element positioning structure 313 can also be selected as a storage groove.

[0032] Please see Figure 3 As shown, in some embodiments of this utility model, the protrusion 220 is tapered toward the abutment 31. The protrusion 220 includes a first planar wall 2200, a second planar wall 2201, and an arc-shaped wall 2202 connecting the first planar wall 2200 and the second planar wall 2201. The first planar wall 2200 and the second planar wall 2201 are arranged at a preset angle. In this embodiment, the angle between the first planar wall 2200 and the second planar wall 2201 is 40 degrees. In other embodiments, it can be set according to the actual situation. When the reel 20 rotates, the abutment 31, under the action of the elastic member 32, can smoothly pass over the protrusion 220 after impacting the protrusion 220 by means of the specific setting of the protrusion 220. The abutment 31 can smoothly switch between the bottom wall 21 and the protrusion 220 for abutment.

[0033] Please see Figure 2 As shown, in one embodiment of this utility model, the housing 10 includes a bottom shell 11 and a top shell 12. The fixed shaft 40 is disposed on the bottom shell 11, and a sound transmission port 110 communicating with the mounting groove 41 is provided on the bottom wall of the bottom shell 11. By providing the sound transmission port 110 communicating with the mounting groove 41, the impact sound inside the housing 10 is smoothly transmitted to the outside of the housing 10.

[0034] Another objective of this invention is to provide a charging device, including a charging cable and a winding device as described in any of the preceding claims. One end of the charging cable is wound around the winding reel 20, and the other end extends to the outside of the housing 10. When using this charging device, the user can pull out the desired length of charging cable by sound sensing. After charging is complete, the winding reel 20 rotates, and the abutment member 31, under the action of the elastic member 32, abuts against the protrusion 220 or the bottom wall 21, applying rotational resistance to the rotation of the winding reel 20, reducing the rotational speed, and preventing the charging cable head from swinging and hitting the user's hand.

[0035] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. The protection scope of this utility model shall be determined by the protection scope of the claims.

Claims

1. A winding device, characterized in that, include: The housing (10) has a fixed shaft (40) inside, and the fixed shaft (40) has a mounting groove (41) inside, and the fixed shaft (40) also has a through port (43) that communicates with the mounting groove (41). The winding reel (20) has a recessed rotating groove (22) on its end face. It is fitted onto the fixed shaft (40) through the rotating groove (22) and rotatably installed in the housing (10). The rotating groove (22) has at least one protrusion (220) on its bottom wall (21). The rotating groove (22) is connected to the through port (43). The sound-generating component (30) includes an abutment (31) and an elastic element (32). The abutment (31) and the elastic element (32) are both disposed in the mounting groove (41). The elastic element (32) is connected between the abutment (31) and the housing (10). One end of the abutment (31) abuts against the elastic element (32), and the other opposite end passes through the passage (43) and abuts against the bottom wall (21) or the protrusion (220) on the bottom wall (21).

2. The winding device according to claim 1, characterized in that, The fixed shaft (40) has a reinforcing part (44) protruding along its axial direction and connected to the housing (10), and the bottom wall (21) has a through hole (210) through which the reinforcing part (44) passes. The protrusions (220) include a plurality of protrusions (220) arranged around the through hole (210).

3. The winding device according to claim 2, characterized in that, The bottom wall (21) is provided with an auxiliary rotating ring (221), and the fixed shaft (40) is recessed at one end near the auxiliary rotating ring (221) to form an auxiliary rotating groove (42) for the auxiliary rotating ring (221) to be inserted. In the radial direction along the fixed shaft (40), the through port (43) is located between the reinforcing part (44) and the side wall of the auxiliary rotating groove (42).

4. The winding device according to claim 3, characterized in that, One end of the protrusion (220) is connected to the auxiliary rotating ring (221), and the other opposite end extends radially along the rotating groove (22).

5. The winding device according to claim 1, characterized in that, The abutting member (31) has an abutting part (310) at one end that abuts against the bottom wall (21), and the abutting member (31) also includes a guiding part (311) disposed in the mounting groove (41); The radial dimension of the through-hole (43) is greater than the radial dimension of the abutment (310), and the radial dimension of the through-hole (43) is less than the radial dimension of the guide (311).

6. The winding device according to claim 5, characterized in that, The guided part (311) includes the guided surface (3112). The housing (10) has a rotation limiting member (50) protruding into the mounting groove (41) at a position corresponding to the fixed shaft (40). The side wall of the mounting groove (41) is provided with a first guide surface (412), and the outer wall of the rotation limiting member (50) is provided with a second guide surface (51). The first guide surface (412) and the second guide surface (51) surround each other to form a guide surface that is in clearance fit with the guided surface (3112).

7. The winding device according to claim 6, characterized in that, The abutting part (310) is hemispherical, the guided surface (3112) is cylindrical, and the first guide sub-surface (412) and the second guide sub-surface (51) respectively include arc surfaces that match the guided surface (3112); Alternatively / and, a connecting portion (314) is connected between the abutting portion (310) and the guiding portion (311), wherein the radial dimension of the guiding portion (311) is greater than the radial dimension of the connecting portion (314), and the radial dimension of the connecting portion (314) is less than the radial dimension of the through port (43).

8. The winding device according to claim 1, characterized in that, The abutting member (31) has an abutting part (310) at one end that abuts against the bottom wall (21). The abutting part (310) is tapered near the bottom wall (21). The abutting part (310) includes a first arc-shaped abutting surface (3100) and a second arc-shaped abutting surface (3101) connected to the first arc-shaped abutting surface (3100).

9. The winding device according to claim 8, characterized in that, The mounting groove (41) includes a first guide surface (410) and a second guide surface (411) arranged at intervals and in parallel. The abutment (31) also includes a guide portion (311) disposed in the mounting groove (41). The guide portion (311) includes a first guide surface (3110) that contacts the first guide surface (410) and a second guide surface (3111) that contacts the second guide surface (411).

10. The winding device according to claim 9, characterized in that, The first guide surface (410) is recessed to form a first rotating groove (4100), and the second guide surface (411) is recessed to form a second rotating groove (4110). The first receiving surface (3110) is provided with a first rotating column (315) placed in the first rotating groove (4100), and the second receiving surface (3111) is provided with a second rotating column (316) placed in the second rotating groove (4110). The first rotating column (315) and the second rotating column (316) are arranged coaxially.

11. The winding device according to any one of claims 1-10, characterized in that, The abutment (31) is provided with a first elastic element positioning structure (312) at one end away from the bottom wall (21), and a second elastic element positioning structure (313) is provided on the housing (10) at the position corresponding to the abutment (31). The two ends of the elastic element (32) are respectively connected to the first elastic element positioning structure (312) and the second elastic element positioning structure (313). The first elastic element positioning structure (312) and the second elastic element positioning structure (313) can be at least one of the following: positioning post, storage groove, and abutment wall.

12. The winding device according to any one of claims 1-10, characterized in that, The protrusion (220) is tapered toward the abutment (31). The protrusion (220) includes a first planar wall (2200), a second planar wall (2201), and an arc-shaped wall (2202) connecting the first planar wall (2200) and the second planar wall (2201). The first planar wall (2200) and the second planar wall (2201) are arranged at a preset angle. Alternatively / and, the protrusions (220) are multiple and are arranged at intervals along the circumference of the rotating groove (22); Alternatively / and, both the abutment (31) and the elastic element (32) are arranged relatively parallel to the rotation axis of the winding spool (20).

13. The winding device according to any one of claims 1-10, characterized in that, The housing (10) includes a bottom shell (11) and a top shell (12). The fixed shaft (40) is disposed on the bottom shell (11). The bottom wall of the bottom shell (11) is provided with a sound transmission port (110) that communicates with the mounting groove (41).

14. A charging device, characterized in that, Includes a charging cable and a winding device as described in any one of claims 1 to 13, wherein one end of the charging cable is wound around the winding spool (20) and the other end extends to the outside of the housing (10).

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