Winding device

Abstract

The utility model provides a wire winding device and relates to the technical field of wire winding and pulling, the wire winding device comprises a shell, a wire winding assembly, a damping part and a circuit board, the wire winding assembly comprises a wire spool and a wire wound on the wire spool, the wire spool is arranged in the shell, and the wire spool can rotate relative to the shell so that the wire can be pulled out or taken back; the damping piece is arranged on at least one of the shell, the wire spool and the wire, the damping piece comprises at least one first part and at least one second part, and when the wire is taken back, the damping piece makes contact with the wire winding assembly or the shell through the first part and generates first friction force; when the wire rod extends out, the damping piece makes contact with the wire winding assembly or the shell through the second part and generates second friction force, the first friction force is smaller than the second friction force, namely the friction force generated when the wire rod retracts back to the shell is larger than the friction force generated when the wire rod extends out of the shell, the wire winding speed of the wire winding device is made to be lower than the wire unwinding speed, and the speed reduction effect is achieved.

Description

Technical Field

[0001] This application relates to the technical field of coiling wire materials, and specifically relates to a wire coiling device. Background Art

[0002] Currently, ordinary wire coiling devices in the market do not have a speed reduction function. When pulling back the wire, the wire winding speed is too fast. Due to the long length of the wire and the influence of a heavy object at the tail, it will swing rapidly and irregularly, which is likely to cause danger to personal injury. At the same time, it will damage the wire and affect the service life of the wire coiling device. Utility Model Content

[0003] The embodiments of this application provide a wire coiling device for solving the problem of too fast wire winding speed of the wire coiling device.

[0004] In some embodiments, a wire coiling device is provided, including a housing; a wire coiling assembly, including a wire winding disc and a wire coiled around the wire winding disc, the wire winding disc is arranged in the housing, the wire can be pulled or retracted, and the wire winding disc can rotate relative to the housing as the wire is pulled or retracted; a circuit board, the circuit board is electrically connected to the wire; a damping member, arranged on at least one of the housing, the wire winding disc and the wire, the damping member includes at least one first part and at least one second part, when the wire is pulled, the first part of the damping member contacts the wire coiling assembly or the housing and generates a first frictional force; when the wire is retracted, the second part of the damping member contacts the wire coiling assembly or the housing and generates a second frictional force; wherein, the first frictional force is less than the second frictional force.

[0005] In some embodiments, the damping member is arranged on the housing and adjacent to the wire winding disc or the wire, a first helical tooth is arranged on the side of the damping member facing the wire or the wire winding disc, and the first part and the second part are formed on the first helical tooth.

[0006] In some embodiments, the damping member further includes a second helical tooth arranged on the wire winding disc, the second helical tooth is adjacent to the housing, and the second helical tooth includes another first part and another second part.

[0007] In some embodiments, the damping member is arranged on the wire winding disc, a third helical tooth is arranged on the side of the damping member facing the housing, and the first part and the second part are formed on the third helical tooth.

[0008] In some embodiments, the damping member is arranged on the wire and adjacent to the housing and the wire winding disc, a fourth helical tooth is arranged on the side of the damping member facing the wire winding disc or the wire, and the first part and the second part are formed on the fourth helical tooth.

[0009] In some embodiments, the damping member includes a first length and a second length, the first length being less than the second length, the first length being the end face length of the end of the damping member close to the axis of the winding disc, and the second length being the end face length of the end of the damping member away from the axis of the winding disc;

[0010] And / or, the damping member includes a first height and a second height, the first height being less than the second height, the first height being the end face width of the end of the damping member close to the axis of the winding disc, and the second length being the end face width of the end of the damping member away from the axis of the winding disc.

[0011] In some embodiments, the damping member includes a first length and a second length, the first length being greater than the second length, the first length being the end face length of the end of the damping member close to the axis of the winding disc, and the second length being the end face length of the end of the damping member away from the axis of the winding disc;

[0012] And / or, the damping member includes a first height and a second height, the first height being less than the second height, the first height being the end face width of the end of the damping member close to the axis of the winding disc, and the second height being the end face width of the end of the damping member away from the axis of the winding disc.

[0013] In some embodiments, the damping member includes a plurality of helical teeth, the helical teeth including the first portion and the second portion, and the plurality of helical teeth are arranged circumferentially along the housing and / or the winding disc and / or the wire.

[0014] In some embodiments, the angle between the first portion and the first plane is less than the angle between the second portion and the first plane; wherein, the first plane is a reference plane perpendicular to the axial direction of the winding disc.

[0015] In some embodiments, a wear-resistant layer is provided on the damping member.

[0016] The wire winding device provided by the embodiment of the present application includes a housing; a wire winding assembly, including a wire winding disc and a wire coiled around the wire winding disc. The wire winding disc is arranged in the housing, the wire can be pulled out or retracted, and the wire winding disc can rotate relative to the housing as the wire is pulled out or retracted; a circuit board, which is electrically connected to the wire; a damping member, arranged on at least one of the housing, the wire winding disc and the wire. The damping member includes at least one first part and at least one second part. When the wire is pulled out, the first part of the damping member contacts the wire winding assembly and generates a first frictional force; when the wire is retracted, the second part of the damping member contacts the wire winding assembly and generates a second frictional force; wherein, the first frictional force is less than the second frictional force. The present application decelerates the wire winding assembly by arranging a damping member between the housing and the wire winding assembly. Among them, the damping member includes at least one first part and a second part. When the wire is pulled out and when the wire is retracted, the housing can contact the wire winding assembly through different contact parts and generate frictional forces of different magnitudes, and the frictional force when the wire is retracted is greater than the frictional force when the wire extends, so that the wire retracting speed of the wire winding device is slower than the wire releasing speed, thereby achieving a deceleration effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0018] Figure 1 is a schematic diagram of the overall structure of the wire winding device in some embodiments of the present application;

[0019] Figure 2 is Figure 1 an exploded view of the wire winding device in the embodiment;

[0020] Figure 3 is Figure 1 a schematic diagram of the positional relationship of the damping member in the embodiment;

[0021] Figure 4 is Figure 3 an enlarged schematic diagram of part A in the embodiment;

[0022] Figure 5 is a schematic diagram of the cooperation relationship between the damping member and the wire in an embodiment;

[0023] Figure 6 is a schematic diagram of the cooperation relationship between the damping member and the wire in another embodiment;

[0024] Figure 7 is a schematic diagram of the positional relationship of the damping member in another embodiment;

[0025] Figure 8 It is a schematic diagram of the positional relationship of the damping member in another embodiment;

[0026] Figure 9 It is Figure 8 An enlarged schematic diagram of location B in the embodiment;

[0027] Figure 10 It is a schematic diagram of the positional relationship of the damping member in yet another embodiment;

[0028] Figure 11 It is a schematic diagram of the structure of the wire winding device when the damping member is located on the wire.

[0029] In the above-mentioned drawings:

[0030] 10 - housing, 11 - upper cover, 12 - lower cover, 121 - rotating shaft;

[0031] 20 - wire winding assembly, 21 - wire winding disc, 22 - wire, 23 - spring;

[0032] 30 - damping member, 31 - first helical gear, 32 - second helical gear, 33 - third helical gear, 34 - fourth helical gear, 301 - first part, 302 - second part, 303 - end face;

[0033] 40 - circuit board. Detailed implementation manners

[0034] The present application will be further described in detail below in conjunction with the drawings and embodiments. It should be specifically noted that the following embodiments are only used to illustrate the present application, but do not limit the scope of the present application. Similarly, the following embodiments are only partial embodiments of the present application rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present application.

[0035] The terms "first", "second", and "third" in the embodiments of the present application are only for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first", "second", and "third" may explicitly or implicitly include at least one such feature. In the description of the present application, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined. All directional indications (such as up, down, left, right, front, back...) in the embodiments of the present application are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the drawings). If the specific posture changes, the directional indications will also change accordingly. The terms "comprising" and "having" and any variations thereof in the embodiments of the present application are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but optionally further includes steps or units not listed, or optionally further includes other steps or components inherent to these processes, methods, products, or devices.

[0036] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the present application. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0037] Please refer to Figure 1 and Figure 2 , Figure 1 is a schematic diagram of the overall structure of the wire winding device in some embodiments of the present application, Figure 2 is Figure 1 an exploded view of the wire winding device in the embodiment. The present application provides a wire winding device, including a housing 10, a wire winding assembly 20, a damping member 30, and a circuit board 40. Among them, the housing 10 includes a detachable upper cover 11 and a lower cover 12. The upper cover 11 and the lower cover 12 jointly enclose an inner cavity. The center of the lower cover 12 has a rotating shaft 121. The wire winding assembly 20 includes a winding disc 21 and a wire 22 wound around the winding disc 21. The winding disc 21 is disposed in the inner cavity of the housing 10 and is rotatably connected to the rotating shaft 121, so that it can rotate forward or backward around the rotating shaft 121, and thus the wire 22 can extend or retract relative to the housing 10. In addition, the rotating shaft 121 can also be used as a positioning shaft when the upper cover 11 and the lower cover 12 are assembled and connected, which is convenient for the assembly work.

[0038] Please refer to Figure 2 and Figure 3 ,Figure 3 Yes Figure 1 Schematic diagram of the positional relationship of the damping member in the embodiment. Figure 3 The R direction shown in the figure is the direction of the forward rotation of the winding disc 21. The wire 22 in the housing 10 is drawn out to the outside of the housing 10. As the wire 22 is drawn out to the outside of the housing 10, the winding disc 21 can be driven to rotate forward; alternatively, the mechanical force generated by some other mechanical structures in the winding device causes the winding disc 21 to rotate forward, thereby causing the wire 22 to be drawn out to the outside of the housing 10. Conversely, the wire 22 outside the housing 10 can be retracted into the housing 10. As the wire 22 outside the housing 10 can be retracted into the housing 10, the winding disc 21 can be driven to rotate in the reverse direction; alternatively, the mechanical force generated by some other mechanical structures in the winding device causes the winding disc 21 to rotate in the reverse direction, thereby causing the wire 22 to be retracted into the housing 10.

[0039] It should be noted that Figure 3 The positional relationship of the damping member 30 shown in does not limit the present application. In some embodiments of the present application, the damping member 30 can be disposed on at least one of the housing 10, the winding disc 21, and the wire 22. That is, the damping member can be disposed on the housing 10 alone, can be disposed on the winding disc 21 alone, can be disposed on the wire 22 alone, can be disposed on any two of the housing 10, the winding disc 21, and the wire 22, or can also be disposed on the housing 10, the winding disc 21, and the wire 22.

[0040] In this embodiment, the winding disc 21 is a disc structure, but it is not limited to this shape. The user can design the shape of the winding disc 21 according to needs.

[0041] Please refer to Figure 2 , the winding assembly 20 further includes a spring 23. The spring 23 is disposed between the winding disc 21 and the rotating shaft 121 on the housing 10, and is used to store the power required for reverse rotation when the winding disc 21 rotates forward, so that the winding disc 21 always has a tendency to rotate in the reverse direction after rotating forward. The spring 23 for winding is a structure familiar to those skilled in the art, such as a scroll spring 23, which will not be elaborated here.

[0042] In some of these embodiments, taking the damping member 30 being disposed on the upper cover 11 of the housing 10 as an example, the first part 301 and the second part 302 of the damping member 10 are described. For details, please refer to Figure 4 , Figure 4 Yes Figure 3An enlarged schematic view of location A in the embodiment. Specifically, the damping member 30 includes a first part 301 and a second part 302. The first part 301 and the second part 302 can be structural members including a surface, or structural members including other possible contact forms. When the wire 22 is pulled out of the housing 10, the first part 301 of the damping member 30 contacts the winding assembly 20 and generates a first frictional force opposite to the moving direction of the winding assembly 20. When the wire 22 is retracted into the housing 10, the second part 302 of the damping member 30 contacts the winding assembly 20 and generates a second frictional force opposite to the moving direction of the winding assembly 20. Among them, the value of the first frictional force is less than the value of the second frictional force.

[0043] The circuit board 40 is disposed inside the housing 10. The circuit board 40 and the wire 22 are directly or indirectly electrically connected. The wire 22 can be a data line for transmitting power signals. This winding device can be applied to charging devices. The charging device charges mobile terminals such as mobile phones and computers. Arranging the circuit board 40 at one end or both ends of the wire 22 can provide protection or support when the wire 22 conducts power transmission or data transmission.

[0044] In the winding device of the present application, a damping member 30 is provided between the housing 10 and the winding assembly 20 to decelerate the winding assembly 20. The damping member 30 includes a first part 301 and a second part 302. When the wire 22 is pulled out and when the wire 22 is retracted, the damping member 30 can contact the winding assembly 20 through different contact parts respectively and generate frictional forces of different magnitudes. And in the present application, by setting the frictional force value when the wire 22 is retracted into the housing 10 to be greater than the frictional force value when the wire 22 is pulled out of the housing 10, the winding speed of the winding device is slower than the unwinding speed, achieving a deceleration effect.

[0045] Please refer to Figure 2 and Figure 3 , in some embodiments, the damping member 30 is disposed on the housing 10 and located at the end side of the wire 22. For example, the damping member 30 is fixedly disposed on the upper cover 11 and adjacent to the winding disc 21 or the wire 22. Of course, the damping member 30 and the upper cover 11 can be detachably fixedly connected or non-detachably fixedly connected. A first helical tooth 31 is provided on one side of the damping member 30 facing the wire 22 or facing the winding disc 21. The first part 301 and the second part 302 are formed on the first helical tooth 31. During the specific use process, when the wire 22 is retracted out of the housing 10, due to the relatively large second frictional force of the second part 302 on the first helical tooth 31, the speed of the wire 22 being retracted is slowed down. In contrast, due to the relatively small first frictional force of the first part 301 on the first helical tooth 31 compared to the second frictional force, the wire 22 can be smoothly pulled out of the housing 10.

[0046] In one embodiment, the included angle between the first part 301 and the first plane is smaller than the included angle between the second part 302 and the first plane, and the first plane is a reference plane perpendicular to the axis of the wire reel 21.

[0047] Specifically, Figure 4 The angle α shown in is the included angle formed between the first part 301 and the first plane, and the angle β is the included angle formed between the second part 302 and the first plane. α < β. When the wire 22 extends out of the housing 10, the wire 22 slides in the direction of the teeth of the first helical gear 31, and there is sliding friction between the first part 301 and the wire 22 to generate a first frictional force; when the wire 22 retracts into the housing 10, the wire 22 slides in the opposite direction of the teeth of the first helical gear 31, and there is sliding friction between the second part 302 and the wire 22 to generate a second frictional force. It can be understood that since α < β, according to the mechanical principle, the first frictional force is smaller than the second frictional force. When the wire 22 retracts into the housing 10, the wire 22 is subjected to a greater frictional force, which can resist part of the power accumulated by the spring 23 during reverse rotation, thereby reducing the rotation speed of the wire reel 21 and the wire take-up speed of the wire 22.

[0048] In order to achieve a better deceleration effect on the wire 22 when the wire 22 retracts into the housing 10 and minimize the influence on the pulling speed of the wire 22 when the wire 22 extends out of the housing 10, the first part 301 should be set as flat as possible, and the second part 302 should be set as steep as possible. Optionally, the included angle range between the first part 301 and the first plane is 0° to 45°, and the included angle range between the second part 302 and the first plane is 50° to 90°. For example, the included angle between the first part 301 and the first plane is 20°, and the included angle between the second part 302 and the first plane is 60°.

[0049] Optionally, a plurality of first helical gears 31 may be provided, and the first part 301 and the second part 302 are formed on each of the plurality of first helical gears 31. When a plurality of first helical gears 31 are provided, the plurality of first helical gears are arranged along the circumferential direction of the housing 10.

[0050] Please refer to Figure 5 , Figure 5 which is a schematic diagram of the cooperation relationship between the damping member and the wire in one embodiment. Specifically, the C direction in the figure represents the circumferential direction of the wire reel 21. Figure 5The Z direction therein represents the axial direction of the wire reel 21. In one embodiment, the first length of the damping member 30 is less than the second length. The first length is the length of the end face 303 of the damping member 30 near the axis of the wire reel 21, and the second length is the length of the end face 303 of the damping member 30 far from the axis of the wire reel 21. In this embodiment, the orthographic projection of the damping member 30 on the first plane is wedge-shaped, and the arc length of the wedge near the axis of the wire reel 21 is less than the arc length of the wedge far from the axis of the wire reel 21. In other words, the length of the damping member 30 in the circumferential direction of the wire reel 21 gradually increases radially outward along the wire reel 21. The length of the damping member 30 in the circumferential direction of the wire reel 21 refers to the arc length of the damping member 30. As the wire 22 is wound into the housing 10, the radius of the wire 22 wound around the wire reel 21 gradually increases, and the contact area between the damping member 30 and the wire 22 also increases accordingly. The contact area is obtained by integrating the radius of the wire 22 wound and the arc length of the damping member 30 within the range of the winding radius of the wire 22. As the winding radius of the wire 22 increases, the arc length of the damping member 30 increases synchronously, and the growth rate of the contact area is relatively fast. In this way, the magnitude of the second frictional force can be further increased, and the wire winding speed in the final stage can be slowed down. In other embodiments, the damping member 30 is not limited to the wedge-shaped structure, as long as the total length of the damping member 30 in the first direction gradually increases radially outward along the wire reel 21.

[0051] In one embodiment, the first height of the damping member 30 is less than the second height. The first height is the width of the end face 303 of the damping member 30 near the axis of the wire reel 21, and the second length is the width of the end face 303 of the damping member 30 far from the axis of the wire reel 21. In this embodiment, the first cross-section of the damping member 30 is wedge-shaped, and the first cross-section is a reference plane coplanar with the axis of the wire reel 21. In other words, the length of the damping member 30 in the axial direction of the wire reel 21 gradually increases radially outward along the wire reel 21. The degree of interference between the damping member 30 and the wire 22 increases as the length of the damping member 30 in the axial direction of the wire reel 21 increases. As the wire 22 is wound into the housing, the radius of the wire 22 wound around the wire reel 21 gradually increases. The greater the length of the damping member 30 in the axial direction of the wire reel 21, the greater the degree of interference between the damping member 30 and the wire 22, and then the greater the pressure between the damping member 30 and the wire 22. In this way, the magnitude of the second frictional force can be increased, and the wire winding speed in the final stage can be slowed down.

[0052] In one embodiment, the first length of the damping member 30 is less than the second length, and the first height of the damping member 30 is less than the second height. In other words, the length of the damping member 30 in the circumferential direction of the wire reel 21 and the length in the axial direction of the wire reel 21 gradually increase radially outward along the wire reel 21. It can be understood that this embodiment combines the two aforementioned embodiments, which can better slow down the wire winding speed in the final stage, and will not be elaborated here.

[0053] In some embodiments, the driving force stored in the spring 23 to drive the winding disc 21 to rotate in the reverse direction when the wire 22 is retracted into the housing 10 gradually decreases with the initial stage, the intermediate stage, and the ending stage. That is, the driving force for the winding disc 21 to rotate in the forward direction is the largest in the initial stage, and the wire retracting speed of the wire 22 is the fastest. Based on this, the second frictional force in the initial stage can be increased to make the wire retracting speed uniform.

[0054] Please refer to Figure 6 , Figure 6 which is a schematic diagram of the cooperation relationship between the damping member and the wire in another embodiment.

[0055] Optionally, the first length of the damping member 30 is less than the second length. In other words, the length of the damping member 30 in the circumferential direction of the winding disc 21 gradually decreases radially outward along the winding disc 21.

[0056] Optionally, the first height of the damping member 30 is less than the second height. In other words, the length of the damping member 30 in the axial direction of the winding disc 21 gradually decreases radially outward along the winding disc 21.

[0057] Optionally, the first length of the damping member 30 is less than the second length and the first height of the damping member 30 is less than the second height. In other words, the lengths of the damping member 30 in the circumferential direction of the winding disc 21 and in the axial direction of the winding disc 21 gradually decrease radially outward along the winding disc 21.

[0058] Please refer to Figure 7 , Figure 7 which is a schematic diagram of the positional relationship of the damping member in another embodiment. In some embodiments, the damping member 30 is fixedly provided on the lower cover 12 of the housing 10 and is located on the annular side of the wire 22. Of course, the damping member 30 and the housing 10 can be detachably fixedly connected or non-detachably fixedly connected. A first helical tooth 31 is provided on the side of the damping member 30 facing the wire 22. A first part 301 and a second part 302 are formed on the first helical tooth 31. When the wire 22 extends out of the housing 10, the wire 22 contacts the first part 301. When the wire 22 is retracted into the housing 10, the wire 22 contacts the second part 302. Optionally, a plurality of first helical teeth 31 are provided, and the first part 301 and the second part 302 are formed on each of the plurality of first helical teeth 31.

[0059] It can be understood that in this embodiment, only when the radius of the wire 22 coiled around the winding disc 21 reaches a certain length, the damping member 30 on the housing 10 will press against and contact the wire 22 to generate frictional force. For example, only at the end stage of the wire winding process, the damping member 30 will generate frictional force on the wire 22, and as the coiling radius of the wire 22 on the winding disc 21 becomes larger, the first frictional force and the second frictional force also become larger. Then, at the end stage of the wire winding process, the second frictional force gradually increases as the end of the wire 22 gradually approaches the housing 10, thereby slowing down the wire winding speed at the end stage, avoiding the user being accidentally hit by the end of the wire 22, or avoiding the problem of damage caused by the impact after the wire 22 is recovered.

[0060] Please refer to Figure 8 and Figure 9 , Figure 8 which is a schematic diagram of the positional relationship of the damping member in another embodiment. Figure 9 is Figure 8 an enlarged schematic diagram at position B in the embodiment. In one of the embodiments, in addition to being provided on the housing 10, the damping member 30 may also be provided with a second helical tooth 32 on the winding disc 21, that is, in this embodiment, the damping member 30 includes a first helical tooth 31 and a second helical tooth 32 at the same time. Among them, the second helical tooth 32 may be provided on the side of the winding disc 21 facing the housing 10. When the second helical tooth 32 is provided on the side facing the housing 10, it can cooperate with the first helical tooth 30 on the housing 10 to slow down the speed at which the wire 22 is retracted.

[0061] Please refer to Figure 10 , Figure 10 which is a schematic diagram of the positional relationship of the damping member in yet another embodiment. In one of the examples, the damping member 30 may be provided on the winding disc 21, and a third helical tooth 33 is provided on the side of the damping member 30 facing the housing. The first part 301 and the second part 302 are formed on the third helical tooth 33. In this embodiment, by providing the damping member 30 on the side of the winding disc 21 facing the housing 10, when the wire 22 is being pulled or retracted, contact is formed with the wire 22, reducing the moving speed of the wire 22 when it is being retracted. The damping member 30 is selectively fixed on the circumferential side or the bottom of the winding disc 21, as long as it can achieve that the damping member 30 presses against the housing 10 so that when the winding disc 21 rotates relative to the housing 10, a sliding friction is generated between the housing 10 and the damping member 30.

[0062] Please refer to Figure 11 , Figure 11It is a schematic structural diagram of the wire winding device when the damping member is located on the wire. In one embodiment, the damping member 30 can be arranged on the wire 22 and adjacent to the housing 10 and the wire reel 21. A fourth helical tooth 34 is provided on the side of the damping member 30 facing the housing 10, and the first part 301 and the second part 302 are formed on the fourth helical tooth 34. In this embodiment, by providing the damping member 30 on the side of the wire reel 21 facing the wire 22, contact is formed between the wire 22 when it is pulled out or retracted, reducing the movement speed of the wire 22 when it is retracted.

[0063] In one embodiment, the damping member 30 includes a plurality of helical teeth, and the plurality of helical teeth can be the above-mentioned first helical tooth, second helical tooth 32, third helical tooth 33, and fourth helical tooth 34. Among them, when including a plurality of helical teeth, the plurality of helical teeth can be arranged along the circumferences of the housing 10 and / or the wire reel 21 and / or the wire 22.

[0064] In some embodiments, a wear-resistant layer is provided on the damping member 30. In this embodiment, the damping member 30 can be made of a compressible material, such as silica gel, etc., to prevent the housing 10 and the wire winding assembly 20 from jamming due to insufficient clearance during relative movement. The wear-resistant layer of the damping member 30 is the part where the damping member 30 is in sliding contact with the housing 10 or the wire winding assembly 20. For example, the wear-resistant layer is provided on the first part 301 and the second part 302 to prevent the damping member 30 from being damaged by long-term friction, improving the durability of the damping member 30. Optionally, the wear-resistant layer is made of a wear-resistant material, such as polyoxymethylene, etc.

[0065] In addition, the first part 301 can be a smooth arc surface to further reduce the first frictional force when the wire 22 extends out of the housing 10, making it smoother when the wire is pulled out; the second part 302 can be a flat straight surface with a convex structure, and the convex structure can be convex points, ribs, etc. formed on the second part to increase the roughness when the second part 302 cooperates with the wire winding assembly 20 and / or the housing 10, increasing the second frictional force and slowing down the wire retraction speed.

[0066] The above are only some embodiments of the present application, and do not limit the protection scope of the present application. Any equivalent device or equivalent process transformation made using the content of the specification and drawings of the present application, or directly or indirectly applied in other related technical fields, shall be included in the patent protection scope of the present application by the same token.

Claims

1. A wire winding device, characterized in that, Comprising: A housing; A wire winding assembly, including a winding disc and a wire coiled around the winding disc, the winding disc being disposed in the housing, the wire being pullable or retractable, and the winding disc being rotatable relative to the housing as the wire is pulled or retracted; A circuit board, electrically connected to the wire; A damping member disposed on at least one of the housing, the winding disc, and the wire, the damping member including at least one first portion and at least one second portion, When the wire is pulled, the first portion of the damping member contacts the wire winding assembly or the housing and generates a first frictional force; when the wire is retracted, the second portion of the damping member contacts the wire winding assembly or the housing and generates a second frictional force; wherein, the first frictional force is less than the second frictional force.

2. The winding device according to claim 1, characterized in that, The damping member is disposed on the housing and adjacent to the winding disc or the wire, and a first helical tooth is provided on a side of the damping member facing the wire or the winding disc, and the first portion and the second portion are formed on the first helical tooth.

3. The winding device according to claim 2, characterized in that The damping member further includes a second helical tooth disposed on the winding disc, the second helical tooth being adjacent to the housing, and the second helical tooth including another said first portion and another said second portion.

4. The winding device according to claim 1, characterized in that The damping member is disposed on the winding disc, and a third helical tooth is provided on a side of the damping member facing the housing, and the first portion and the second portion are formed on the third helical tooth.

5. The coiling device according to claim 1, characterized in that, The damping member is disposed on the wire and adjacent to the housing and the winding disc, and a fourth helical tooth is provided on a side of the damping member facing the winding disc or the wire, and the first portion and the second portion are formed on the fourth helical tooth.

6. The winding device according to claim 1, wherein, The damping member includes a first length and a second length, the first length being less than the second length, the first length being the end face length of the end of the damping member close to the axis of the winding disc, and the second length being the end face length of the end of the damping member away from the axis of the winding disc; And / or, the damping member includes a first height and a second height, the first height being less than the second height, the first height being the end face width of the end of the damping member close to the axis of the winding disc, and the second length being the end face width of the end of the damping member away from the axis of the winding disc.

7. The winding device according to claim 1, wherein The damping member includes a first length and a second length, the first length being greater than the second length, the first length being the end face length of the end of the damping member close to the axis of the winding disc, and the second length being the end face length of the end of the damping member away from the axis of the winding disc; And / or, the damping member includes a first height and a second height, the first height being less than the second height, the first height being the end face width of the end of the damping member close to the axis of the winding disc, and the second height being the end face width of the end of the damping member away from the axis of the winding disc.

8. The winding device according to claim 1, characterized in that, The damping member includes a plurality of helical teeth, the helical teeth including the first portion and the second portion, and the plurality of helical teeth are arranged circumferentially along the housing and / or the winding disc and / or the wire.

9. The coiling device according to claim 1, characterized in that, The included angle between the first part and the first plane is smaller than the included angle between the second part and the first plane; wherein, the first plane is a reference plane perpendicular to the axial direction of the winding disc.

10. The winding device according to any one of claims 1-9, characterized in that, A wear-resistant layer is provided on the damping member.

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