Winding mechanism and charging device

Abstract

The utility model provides a winding mechanism and a charging device, and relates to the technical field of electronic equipment. The winding mechanism comprises a wire spool, a cable, a first shell and a centrifugal friction piece; a containing groove is formed in the wire spool, and the containing groove penetrates to the peripheral side face of the wire spool; the cable is wound on the peripheral side of the wire spool; the first shell is rotationally connected with the wire spool, the first shell comprises a first enclosure wall, and the first enclosure wall is located on the periphery of the wire spool; the centrifugal friction piece is at least partially accommodated in the accommodating groove; when the cable is drawn out or recycled, the wire spool rotates relative to the first shell, so that the centrifugal friction piece rubs with the first enclosure wall under the centrifugal effect. The containing groove is formed in the peripheral side face of the wire spool, at least part of the centrifugal friction piece is contained in the containing groove, the first surrounding wall is arranged on the periphery of the wire spool, and therefore when the wire spool rotates, the centrifugal friction piece in the containing groove can generate friction with the first surrounding wall under the centrifugal effect, and speed reduction of the wire spool can be achieved.

Description

Technical Field

[0001] This application relates to the technical field of electronic devices, and particularly to a wire winding mechanism and a charging device. Background Art

[0002] A wire winding mechanism is a device that can wind a cable within a housing and also draw out the cable when in use. It is often applied to digital charging products, such as a power bank with a built-in charging cable, enabling the charging cable to be drawn out or automatically retracted. The wire winding mechanism usually realizes the automatic retraction of the cable through a torsion spring or other elastic structural members. Therefore, the retraction speed of the cable is usually very fast, resulting in violent swinging of the cable during the retraction process. This not only easily causes damage to the wire winding mechanism itself but may also cause impact injury to the user. Utility Model Content

[0003] An embodiment of this application provides a wire winding mechanism, which includes:

[0004] A winding disk, on which a receiving groove is provided, and the receiving groove penetrates to the circumferential side surface of the winding disk;

[0005] A cable, which is wound around the circumferential side of the winding disk;

[0006] A first housing, which is rotatably connected to the winding disk. The first housing includes a first surrounding wall, and the first surrounding wall is located outside the winding disk; and

[0007] A centrifugal friction member, at least part of which is movably arranged in the receiving groove;

[0008] Wherein, when the cable is drawn out or retracted, the winding disk rotates relative to the first housing, so that the centrifugal friction member frictions against the first surrounding wall under the centrifugal force.

[0009] An embodiment of this application also provides a charging device, which includes a power source and the above-mentioned wire winding mechanism. The cable of the wire winding mechanism is a charging cable, and the power source is electrically connected to the charging cable.

[0010] Different from the prior art, the beneficial effect of the wire winding mechanism provided by this application is:

[0011] In this application, by winding the cable around the circumferential side of the winding disk, the winding disk will rotate when the cable is drawn out or retracted. This application also provides a receiving groove on the circumferential side surface of the winding disk, and at least part of the centrifugal friction member is received in the receiving groove, and a first surrounding wall is provided outside the winding disk. When the winding disk rotates, the centrifugal friction member in the receiving groove will friction against the first surrounding wall under the centrifugal force. The faster the rotation speed of the winding disk, the greater the normal pressure of the centrifugal friction member against the first surrounding wall under the centrifugal force, and the greater the generated frictional force. Thus, the deceleration of the winding disk can be realized, and further, the too-fast retraction speed of the cable can be avoided. Brief Description of the Drawings

[0012] To more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings in the following description 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.

[0013] Figure 1 is a perspective structural view of a wire winding mechanism provided by some embodiments of the present application;

[0014] Figure 2 is Figure 1 an exploded structural view of the wire winding mechanism in the embodiment;

[0015] Figure 3 is a sectional structural view of the wire winding mechanism provided by some embodiments of the present application in the first state;

[0016] Figure 4 is Figure 3 a sectional structural view of the wire winding mechanism in the embodiment in the second state;

[0017] Figure 5 is a mating structural view of a centrifugal friction member and a partial wire winding disc provided by some embodiments of the present application;

[0018] Figure 6 is a partial structural view of the wire winding mechanism provided by some embodiments of the present application;

[0019] Figure 7 is a mating structural view of a centrifugal friction member and a first surrounding wall provided by some embodiments of the present application;

[0020] Figure 8 is a perspective structural view of a partial wire winding mechanism provided by some embodiments of the present application;

[0021] Figure 9 is Figure 8 an exploded structural view of the partial wire winding mechanism in the embodiment;

[0022] Figure 10 is a partial exploded structural view of the wire winding mechanism provided by some embodiments of the present application;

[0023] Figure 11 is a mating structural view of a wire winding disc and a centrifugal friction member in the first state provided by some embodiments of the present application;

[0024] Figure 12 is Figure 11A schematic diagram of the matching structure of the winding disc and the centrifugal friction member in the embodiment in the second state;

[0025] Figure 13 is a schematic structural diagram of a portion of a winding mechanism provided in some embodiments of the present application in a first state;

[0026] Figure 14 yes Figure 13 A schematic structural diagram of a portion of the winding mechanism in the embodiment in the second state;

[0027] Figure 15 is a schematic diagram of a three-dimensional structure of a portion of a winding mechanism provided in some embodiments of the present application in a first state;

[0028] Figure 16 yes Figure 15 A schematic diagram of the exploded structure of a portion of the winding mechanism shown;

[0029] Figure 17 yes Figure 16 A further exploded structural diagram of a portion of the winding mechanism shown;

[0030] Figure 18 It is a schematic diagram of the structure of the charging device provided in some embodiments of the present application. DETAILED DESCRIPTION

[0031] In the following description, specific details such as specific system structures, technologies, etc. are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present application. However, it should be clear to those skilled in the art that the present application may also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to prevent unnecessary details from obstructing the description of the present application.

[0032] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. It is understood that the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present application.

[0033] The present application embodiment provides a wire winding mechanism. Figure 1 and Figure 2 , Figure 1 is a schematic diagram of the three-dimensional structure of a winding mechanism provided in some embodiments of the present application, Figure 2 yes Figure 1 Schematic diagram of the exploded structure of the winding mechanism in the embodiment.

[0034] In some embodiments, the wire winding mechanism 10 includes a housing 100, a cable 200, and a winding disc 300. As Figure 1 shown, the cable 200 can be retracted inside the housing 100, with only the end portion outside the housing 100 for the user to pull. As Figure 2 shown, the cable 200 can be coiled after being retracted. The cable 200 can be wound around the winding disc 300, thereby driving the winding disc 300 to rotate when being pulled out or retracted. Among them, the cable 200 can be designed into a corresponding structure according to the actual application of the wire winding mechanism 10.

[0035] Among them, the wire winding mechanism 10 can include one or more winding discs 300. A cable 200 can be wound around the circumferential side of each winding disc 300. In some embodiments, only one winding disc 300 is provided inside the housing 100 of the wire winding mechanism 10, and a through hole for the cable 200 to pass through can be formed on the surface of the housing 100. In other embodiments, multiple winding discs 300 are provided inside the housing 100 of the wire winding mechanism 10, and multiple through holes for the cable 200 to pass through can be formed on the surface of the housing 100. In some embodiments, the axis lines Y of the multiple winding discs 300 coincide, and the multiple winding discs 300 are stacked. In other embodiments, the axis lines Y of the multiple winding discs 300 are parallel, and the multiple winding discs 300 can be arranged on the same horizontal plane or on different horizontal planes. In other embodiments, the axis lines Y of the multiple winding discs 300 can also form an acute angle, and the multiple winding discs 300 can be inclined to each other.

[0036] Optionally, the wire winding mechanism 10 can include a first housing 110 and a second housing 120. The first housing 110 and the second housing 120 can be connected to form the housing 100 of the wire winding mechanism 10. The first housing 110 and the second housing 120 cooperate to surround the winding disc 300. The winding disc 300 can rotate relative to the first housing 110 and the second housing 120. Both the first housing 110 and the second housing 120 can be rotatably connected to the winding disc 300. In some embodiments, the first housing 110 can be used as the top cover of the wire winding mechanism 10, at least partially located on the top side of the winding disc 300; the second housing 120 can be used as the base of the wire winding mechanism 10, at least partially located on the bottom side of the winding disc 300. In other embodiments, the orientations of the first housing 110 and the second housing 120 can also be inverted, or other orientation arrangements can be adopted. Among them, at least one of the first housing 110 and the second housing 120 can also have a surrounding wall located on the circumferential side of the winding disc 300.

[0037] It should be understood that the terms used in the specification of this application and the appended claims are only for the purpose of describing specific embodiments and are not intended to limit this application. As used in the specification of this application and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include the plural forms. Also, in the description of this application, the terms "first", "second" are only for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first", "second" may explicitly or implicitly include one or more of the said features. Also, in the description of this application, the meaning of "a plurality" is two or more, unless otherwise specifically defined.

[0038] In some embodiments, the wire winding mechanism 10 further includes a centrifugal friction member 400. The centrifugal friction member 400 is movably disposed on the wire winding disc 300 and can be thrown out under the action of centrifugal force when the wire winding disc 300 rotates at a high speed, and then friction occurs with the structural member outside the wire winding disc 300 to achieve deceleration of the wire winding disc 300, thereby avoiding too fast a recovery speed of the cable 200. Among them, the structural member outside the wire winding disc 300 can be the housing 100, such as the first housing 110. It can be understood that the faster the rotation speed of the wire winding disc 300, the greater the normal pressure of the centrifugal friction member 400 on the housing 100 under the action of centrifugal force, and the greater the generated frictional force, so as to achieve deceleration of the wire winding disc 300.

[0039] Please refer to Figure 3 and Figure 4 , Figure 3 is a schematic cross-sectional structure diagram of the wire winding mechanism provided in some embodiments of this application in the first state, Figure 4 is Figure 3 a schematic cross-sectional structure diagram of the wire winding mechanism in the second state in the embodiment.

[0040] In some embodiments, the wire winding disc 300 is provided with a receiving groove 301, and the receiving groove 301 penetrates to the circumferential side surface of the wire winding disc 300. The centrifugal friction member 400 is at least partially movably disposed in the receiving groove 301, so that when the wire winding disc 300 rotates at a high speed, the centrifugal friction member 400 located in the receiving groove 301 is thrown out from the circumferential side surface of the wire winding disc 300, and then friction occurs with the housing 100.

[0041] Among them, the centrifugal friction member 400 can be as shown in Figure 3It is completely received in the receiving groove 301 as shown. In other embodiments, the centrifugal friction member 400 may also be partially received in the receiving groove 301 in the first state, that is, the centrifugal friction member 400 may be partially located outside the receiving groove 301 in the first state. The centrifugal friction member 400 may not contact the outer shell 100 in the first state, so that the winding disc 300 can rotate smoothly at a low speed. When the winding disc 300 rotates at a high speed, the winding mechanism 10 is in the second state, and the centrifugal friction member 400 will displace relative to the winding disc 300 under the centrifugal force and contact the outer shell 100. In other words, the centrifugal friction member 400 will be thrown out under the action of the centrifugal force and rub against the outer shell 100 outside the periphery of the winding disc 300. It can be understood that the centrifugal force is a virtual force and an embodiment of inertia, which makes the rotating object move away from its rotation center.

[0042] In some embodiments, the first housing 110 may include a first surrounding wall 111, and the first surrounding wall 111 is located outside the winding disc 300. The first housing 110 may be rotatably connected to the winding disc 300. The cable 200 is wound around the circumferential side of the winding disc 300, so that when the cable 200 is pulled out or retracted, the winding disc 300 will rotate relative to the first housing 110. The state of the winding mechanism 10 can be divided into a first state and a second state according to the rotation speed of the winding disc 300. In the first state, the winding disc 300 is stationary relative to the first housing 110 or rotates at a first speed, and the centrifugal friction member 400 is spaced apart from the first surrounding wall 111. In the second state, the winding disc 300 rotates relative to the first housing 110 at a second speed, and the centrifugal friction member 400 displaces relative to the winding disc 300 under the centrifugal force and contacts the first surrounding wall 111.

[0043] Wherein, the second speed is greater than the first speed. Both the first speed and the second speed can be speed ranges. The first speed can be regarded as a slower speed range, and the second speed can be regarded as a faster speed range. The second speed can be the speed that the winding disc 300 will reach during the automatic retraction of the cable 200, so that the centrifugal friction member 400 will rub against the first surrounding wall 111 when the cable 200 is automatically retracted, so as to reduce the rotation speed of the winding disc 300, and further reduce the retraction speed of the cable 200, and avoid the dangerous phenomenon that the cable 200 swings due to too fast a speed during retraction and hits the user's hand.

[0044] In other embodiments, the centrifugal friction member 400 may also contact the first surrounding wall 111 when the winding disc 300 rotates at the first speed or is stationary. In other words, the centrifugal friction member 400 may always contact the first surrounding wall 111. The following mainly takes the example that the centrifugal friction member 400 is separated from the first surrounding wall 111 in the first state for description.

[0045] When the winding disc 300 rotates relative to the first surrounding wall 111, the centrifugal friction member 400 will friction against the first surrounding wall 111 under the centrifugal force. At this time, under the centrifugal force, the normal pressure of the centrifugal friction member 400 on the first surrounding wall 111 increases compared with when the winding disc 300 is stationary, so that the frictional force between the centrifugal friction member 400 and the first surrounding wall 111 can be increased. The faster the rotation speed of the winding disc 300, the greater the normal pressure of the centrifugal friction member 400 on the first surrounding wall 111, and the greater the frictional force between the centrifugal friction member 400 and the first surrounding wall 111.

[0046] It should be understood that the terms "comprising" and "having" and any variations thereof used in the specification and appended claims of this 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 may optionally further include steps or units not listed, or may optionally further include other steps or units inherent to these processes, methods, products or devices.

[0047] The centrifugal friction member 400 can abut against the groove wall of the accommodating groove 301 in the second state to decelerate the winding disc 300 by applying force. For example, in the second state, the centrifugal friction member 400 abuts against the side wall of the accommodating groove 301 along the circumferential direction of the winding disc 300. In other embodiments, in the second state, the centrifugal friction member 400 can also abut against other parts of the winding disc 300 or against other structural members provided on the winding disc 300 to decelerate the winding disc 300 by applying force.

[0048] Please refer to Figure 5 , Figure 5 which is a schematic diagram of the cooperation structure between the centrifugal friction member and a part of the winding disc provided in some embodiments of the present application. In some embodiments, a sliding track 3011 may be provided on the bottom wall of the accommodating groove 301. The sliding track 3011 may be a track extending along the radial direction of the winding disc 300. The centrifugal friction member 400 includes a sliding portion 4001, and the sliding portion 4001 is disposed in the sliding track 3011 and can move along the sliding track 3011 in a direction approaching or departing from the first surrounding wall 111. In the second state, the sliding portion 4001 of the centrifugal friction member 400 can abut against the sliding track 3011 in the circumferential direction of the winding disc 300 to decelerate the winding disc 300 by applying force.

[0049] Such as Figure 5As shown, the sliding track 3011 can be a strip-shaped chute, and the sliding part 4001 of the centrifugal friction member 400 can be a slider adapted to the strip-shaped chute. When the winding disc 300 rotates, the sliding part 4001 can press against the chute wall of the sliding track 3011. In other embodiments, the sliding track 3011 can also be a strip-shaped protrusion. Correspondingly, the sliding part 4001 of the centrifugal friction member 400 is a groove adapted to the strip-shaped protrusion, so that the sliding part 4001 can slide along the sliding track 3011, and the groove wall of the sliding part 4001 can press against the sliding track 3011 when the winding disc 300 rotates.

[0050] Optionally, at least part of the centrifugal friction member 400 is a thermally expandable material. Thus, as heat is generated by friction between the centrifugal friction member 400 and the first surrounding wall 111, the centrifugal friction member 400 can expand, further increasing the normal pressure of the centrifugal friction member 400 on the first surrounding wall 111, and thus improving the deceleration effect.

[0051] Please refer to Figure 4 for reference Figure 6 , Figure 6 which is a partial structural schematic diagram of the wire winding mechanism provided by some embodiments of the present application.

[0052] Optionally, the wire winding mechanism 10 can include an elastic member 500. The elastic member 500 is disposed between the centrifugal friction member 400 and the winding disc 300, and one end contacts the winding disc 300 and the other end contacts the side of the centrifugal friction member 400 facing away from the first surrounding wall 111. The elastic member 500 can be a compression spring.

[0053] In some embodiments, the elastic member 500 can be in a compressed state in the second state, and is used to provide a force for the centrifugal friction member 400 to move towards the first surrounding wall 111, so as to increase the normal pressure of the centrifugal friction member 400 on the first surrounding wall 111, and further increase the sliding friction force between the centrifugal friction member 400 and the first surrounding wall 111, so as to improve the deceleration effect.

[0054] In other embodiments, the elastic member 500 can be in a stretched state in the second state. The elastic member 500 can connect the side of the centrifugal friction member 400 facing away from the first surrounding wall 111 and the groove wall of the accommodating groove 301. In the second state, the elastic member 500 can provide a force for the centrifugal friction member 400 to move away from the first surrounding wall 111, so that when the rotational speed of the winding disc 300 decreases and the centrifugal force decreases, the centrifugal friction member 400 can be reset under the action of the elastic member 500.

[0055] Please refer to Figure 4 for reference Figure 7 , Figure 7 which is a schematic diagram of the cooperation structure between the centrifugal friction member and the first surrounding wall provided by some embodiments of the present application.

[0056] In some embodiments, the centrifugal friction member 400 is provided with a plurality of friction protrusions 411 on the surface facing the first surrounding wall 111 to increase the sliding friction force between the centrifugal friction member 400 and the first surrounding wall 111 in the second state. The specific structure of the plurality of friction protrusions 411 can be set according to actual conditions.

[0057] For example, the friction convex portion 411 may be a protrusion on the surface of the centrifugal friction member 400, and the protrusion may be, but not limited to, a hemispherical or prismatic protrusion. A plurality of protrusions may be distributed on the surface of the centrifugal friction member 400 facing the first surrounding wall 111, forming a plurality of friction convex portions 411. For another example, a concave structure may be formed on the surface of the centrifugal friction member 400 facing the first surrounding wall 111, and the concave structure may be, but not limited to, a stripe pattern, so that the non-concave surface may form the friction convex portion 411.

[0058] The centrifugal friction member 400 of the embodiment of the present application can squeeze the first surrounding wall 111 under the action of centrifugal force when the winding drum 300 rotates, and rub against the first surrounding wall 111 through the friction protrusion 411. The greater the friction between the centrifugal friction member 400 and the first surrounding wall 111, the better the deceleration effect. The centrifugal friction member 400 contacts the first surrounding wall 111 through the friction protrusion 411 protruding on its surface, which can increase the friction coefficient of the centrifugal friction member 400, increase the friction between the centrifugal friction force and the first surrounding wall 111, and thus improve the deceleration effect.

[0059] Please combine Figure 4 See also Figure 8 and Figure 9 , Figure 8 is a schematic diagram of a three-dimensional structure of a portion of a winding mechanism provided in some embodiments of the present application, Figure 9 yes Figure 8 Schematic diagram of the exploded structure of part of the winding mechanism in the embodiment.

[0060] In some embodiments, the winding drum 300 includes a first protrusion 310, a winding portion 320, and a second protrusion 330 arranged in sequence along the axis Y. The first protrusion 310 and the second protrusion 330 are respectively arranged at both ends of the winding portion 320 along the axis Y. The widths of the first protrusion 310 and the second protrusion 330 are both greater than the width of the winding portion 320. The projections of the first protrusion 310 and the second protrusion 330 along the axis Y direction completely cover the winding portion 320, so that the winding drum 300 forms an I-shaped shape. The cable 200 of the winding mechanism 10 is wound around the winding portion 320, so that as the cable 200 is drawn out or recovered, the winding drum 300 can rotate around the axis Y like a gyroscope.

[0061] Among them, a receiving groove 301 is provided on the circumferential side of at least one of the first protruding portion 310 and the second protruding portion 330. The receiving groove 301 is used to receive the centrifugal friction member 400. In other words, the winding mechanism 10 can arrange the centrifugal friction member 400 on at least one of the first protruding portion 310 and the second protruding portion 330. Understandably, the circumferential side surfaces of the first protruding portion 310 and the second protruding portion 330 also serve as the circumferential side surface of the winding disc 300. Optionally, the receiving groove 301 is provided in the first protruding portion 310, and the receiving groove 301 penetrates to the circumferential side surface of the first protruding portion 310, and the first surrounding wall 111 can be located on the periphery of the first protruding portion 310. Alternatively, the receiving groove 301 is provided in the second protruding portion 330, and the receiving groove 301 penetrates to the circumferential side surface of the second protruding portion 330, and the first surrounding wall 111 can be located on the periphery of the second protruding portion 330.

[0062] In some embodiments, the second housing 120 of the winding mechanism 10 includes a second surrounding wall 121. The second housing 120 can be rotatably connected to the winding disc 300. The second surrounding wall 121 can be butted against the first surrounding wall 111. The first surrounding wall 111 and the second surrounding wall 121 can cooperate to form the side wall of the outer shell 100. Among them, one of the first surrounding wall 111 and the second surrounding wall 121 can be located on the periphery of the first protruding portion 310, and the other can be located on the periphery of the second protruding portion 330. For example Figure 4 As shown, the first surrounding wall 111 is located on the periphery of the first protruding portion 310, and the second surrounding wall 121 is located on the periphery of the second protruding portion 330.

[0063] Among them, a receiving groove 301 can be provided on the circumferential side of the first protruding portion 310. The centrifugal friction member 400 can be at least partially arranged in the receiving groove 301 for friction with the first surrounding wall 111 in the second state to achieve deceleration of the winding disc 300. Of course, this is only an example provided by the embodiments of the present application. Optionally, a receiving groove 301 can also be provided on the circumferential side of the second protruding portion 330, and another centrifugal friction member 400 can be at least partially arranged therein for friction with the second surrounding wall 121 in the second state. Understandably, one or more receiving grooves 301 can be provided on the circumferential sides of the first protruding portion 310 and the second protruding portion 330, and the centrifugal friction members 400 can be at least partially arranged in the receiving grooves 301 in one-to-one correspondence.

[0064] Please refer to Figure 4 、 Figure 9 and Figure 10 , Figure 10 which is a partial exploded structural schematic diagram of a winding mechanism provided by some embodiments of the present application.

[0065] In some embodiments, the cable reel 300 further includes a rotating shaft 340, and the rotating shaft 340 extends along the axis Y of the cable reel 300. The rotating shaft 340 can serve as the central axis of the cable reel 300. The rotating shaft 340 is fixed to the protrusion, so that when the cable 200 drives the protrusion to rotate, the rotating shaft 340 will also rotate synchronously. Specifically, the rotating shaft 340 can be integrally formed with the protrusion and the winding portion 320. The rotating shaft 340 can also be inserted into the protrusion and fixedly connected thereto. The cable reel 300 can be rotatably connected to at least one of the first shell 110 and the second shell 120 via the rotating shaft 340.

[0066] The winding mechanism 10 may include a reset member 600, which may be Figure 10 The coil spring shown may also be a torsion spring or other structural member that can be deformed and restored, and is used to provide a restoring force for the winding drum 300 to rotate in the opposite direction when the winding drum 300 rotates. The reset member 600 may be connected to the rotating shaft 340. The rotating shaft 340 may extend outside the housing 100, and the reset member 600 may be disposed on the outer surface of the housing 100 and connected to the rotating shaft 340 extending outside the housing 100, so as to reduce the difficulty of installing the winding mechanism 10.

[0067] Optionally, the first housing 110 and the second housing 120 may be arranged to form an installation space 101. The cable reel 300 may be accommodated in the installation space 101, and the rotating shaft 340 of the cable reel 300 may extend outside the installation space 101. The rotating shaft 340 may pass through at least one of the first housing 110 and the second housing 120.

[0068] The first housing 110 and the second housing 120 may be provided with a mounting groove 102 on one side of the winding drum 300 away from the first protrusion 310 along the axis Y. For example, the mounting groove 102 may be provided at Figure 4 The top side of the first housing 110 shown in the figure, or the bottom side of the second housing 120. The shaft 340 can extend into the mounting groove 102. The reset member 600 can be accommodated in the mounting groove 102, and one end is connected to the shaft 340, and the other end is connected to the groove wall of the mounting groove 102. The reset member 600 can be used to provide a restoring force for the winding drum 300 to rotate in the opposite direction when the cable 200 is pulled out and drives the winding drum 300 to rotate, so that the cable 200 can be automatically recovered. For example Figure 4 As shown, the rotating shaft 340 can be inserted into the second housing 120, and a mounting groove 102 is provided on a side of the second housing 120 away from the first protruding portion 310. Figure 10 The reset member 600 shown can be disposed in the mounting groove 102 and connected to the rotating shaft 340 .

[0069] Understandably, all the directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative positional relationship and movement conditions between components in a certain specific posture (as shown in the attached drawings). If this specific posture changes, the directional indications will also change accordingly.

[0070] In some embodiments, a mounting enclosure 130 protrudes from the outer surface of the first housing 110 or the second housing 120, and the mounting groove 102 is formed by surrounding the mounting enclosure 130. One end of the reset member 600 can be connected to the mounting enclosure 130, such as but not limited to snap connection. In other embodiments, the mounting groove 102 can also be recessed on the outer surface of the first housing 110 or the second housing 120.

[0071] In some application scenarios, when the cable 200 is pulled out, the winding disc 300 rotates accordingly, and the reset member 600 gradually accumulates restoring force during the rotation of the winding disc 300. When the cable 200 is released, under the action of the restoring force accumulated by the reset member 600, the winding disc 300 rotates in the opposite direction, thereby driving the cable 200 to automatically retract.

[0072] To ensure that the cable 200 can be automatically retracted repeatedly and stably, the reset member 600 usually needs to be designed to provide a large restoring force in the second state, which will also make the retraction speed of the cable 200 relatively fast. However, too fast a retraction speed of the cable 200 is likely to cause the cable 200 to swing rapidly, thereby bringing safety risks. Especially when a heavy object such as a charging connector is provided at the outer end of the cable 200, the swing caused by the rapid retraction of the cable 200 is likely to hit and even injure the human body.

[0073] Please refer to Figure 3 and Figure 4 for reference Figure 11 and Figure 12 , Figure 11 which is a schematic diagram of the cooperation structure of the winding disc and the centrifugal friction member in the first state provided by some embodiments of the present application, Figure 12 and Figure 11 is a schematic diagram of the cooperation structure of the winding disc and the centrifugal friction member in the second state in the

[0074] In the embodiments of the present application, the winding mechanism 10 is configured by providing an accommodation groove 301 on the circumferential side surface of the winding disc 300, at least partially accommodating the centrifugal friction member 400 in the accommodation groove 301, and providing a first enclosure 111 around the winding disc 300. When the winding disc 300 rotates at a high speed, the centrifugal friction member 400 in the accommodation groove 301 will be displaced under the centrifugal force and contact the first enclosure 111 to generate frictional force, so as to decelerate the winding disc 300, thereby avoiding too fast a retraction speed of the cable 200.

[0075] Specifically, when the wire winding mechanism 10 is in the first state, the wire winding disc 300 can be stationary or at a relatively slow first speed. At this time, the centrifugal friction member 400 can be accommodated in the accommodation groove 301 as shown, so that there is a gap between the centrifugal friction member 400 and the first surrounding wall 111 as shown, and they do not rub against each other, enabling the wire winding disc 300 to rotate smoothly. Figure 11 as shown Figure 3 as shown

[0076] When the wire winding mechanism 10 is in the second state, the wire winding disc 300 can be at a relatively fast second speed. At this time, the centrifugal friction member 400 will partially move out of the accommodation groove 301 under the centrifugal force as shown, so that the centrifugal friction member 400 and the first surrounding wall 111 will come into contact and rub against each other as shown. In the second state, the centrifugal friction member 400 can also contact the groove wall of the accommodation groove 301, so that the friction between the centrifugal friction member 400 and the first surrounding wall 111 can achieve the deceleration of the wire winding disc 300. Figure 12 as shown Figure 4 as shown

[0077] Through the above design, the embodiment of the present application can prevent the rotation speed of the wire winding disc 300 from being too fast, and further avoid the recovery speed of the cable 200 from being too fast. It should be noted that the wire winding mechanism 10 provided in this embodiment is only an example, and the design of other embodiments of the present application is not limited thereto. For details, please refer to the above description.

[0078] In some embodiments, a plurality of centrifugal friction members 400 can be provided on the wire winding disc 300. The number of centrifugal friction members 400 can be 3 as shown, or can be 2 or more than 3. The plurality of centrifugal friction members 400 can be distributed at intervals along the circumferential direction of the wire winding disc 300. In some other embodiments, the number of centrifugal friction members 400 can also be 1. Figure 11 as shown

[0079] Optionally, the centrifugal friction member 400 includes a main body 410 and a limiting portion 420. At least a part of the main body 410 is accommodated in the accommodation groove 301. The limiting portion 420 can protrude from the main body 410, for example, protrude from one end of the main body 410 away from the first surrounding wall 111 (or the second surrounding wall 121), that is, the end of the main body 410 close to the center of the wire winding disc 300. The limiting portion 420 is accommodated in the accommodation groove 301. When the wire winding mechanism 10 switches from the first state to the second state, the limiting portion 420 can press against the groove wall of the accommodation groove 301 to prevent the centrifugal friction member 400 from completely coming out of the accommodation groove 301.

[0080] Among them, the winding reel 300 may include a first groove wall 311 for forming a receiving groove 301. The first groove wall 311 forms a part of the circumferential side surface of the winding reel 300, and an entrance / exit 302 is formed on the first groove wall 311. The main body 410 of the centrifugal friction member 400 can be moved into or out of the receiving groove 301 through the entrance / exit 302. When the winding mechanism 10 switches from the first state to the second state, the main body 410 undergoes a displacement relative to the first groove wall 311 and passes through the entrance / exit 302. The limiting portion 420 is received in the receiving groove 301 in both the first state and the second state, and presses against the first groove wall 311 in the second state to prevent the centrifugal friction member 400 from moving radially along the winding reel 300 and disengaging from the winding reel 300. Among them, limiting portions 420 may be respectively protruded at both ends of the main body 410 along the circumferential direction of the winding reel 300, and both limiting portions 420 can press against the first groove wall 311 in the second state to prevent the centrifugal friction member 400 from falling off.

[0081] Please refer to Figure 3 and Figure 4 for reference Figure 13 and Figure 14 , Figure 13 is a schematic structural diagram of a partial winding mechanism provided in some embodiments of the present application in the first state, Figure 14 is Figure 13 a schematic structural diagram of a partial winding mechanism in the second state in the embodiment. The winding mechanism 10 may further include a limiting member 700, and the limiting member 700 can be used to limit the movement of the centrifugal friction member 400 along the axial line Y direction of the winding reel 300.

[0082] In some embodiments, the receiving groove 301 may penetrate to one end surface of the winding reel 300 along the axial line Y, for example, Figure 4 the top end surface shown, so as to facilitate the centrifugal friction member 400 to be loaded into the receiving groove 301 from this end surface. The limiting member 700 may be disposed on this end surface and press against the centrifugal friction member 400. The limiting member 700 may be connected to the winding reel 300. Among them, the connection manner between the limiting member 700 and the winding reel 300 is, for example, but not limited to, snap connection, bonding, etc.

[0083] During the installation process, the winding mechanism 10 may assemble the centrifugal friction member 400 into the receiving groove 301 from one side of the end surface through which the receiving groove 301 penetrates, and then connect the limiting member 700 to this end surface of the winding reel 300, so that the limiting member 700 presses against the centrifugal friction member 400. One side of the centrifugal friction member 400 facing away from the limiting member 700 may abut against the groove wall of the receiving groove 301, so that the limiting member 700 and the groove wall of the receiving groove 301 can cooperate to achieve the limitation of the centrifugal friction member 400 in the axial line Y direction. In other embodiments, both ends of the centrifugal friction member 400 along the axial line Y direction may also respectively abut against two limiting members 700.

[0084] When the winding mechanism 10 switches from the first state to the second state, a part of the centrifugal friction member 400 will be thrown out of the accommodating groove 301 under the centrifugal force and come into contact with the housing 100 to generate sliding friction. During this process, the limiting member 700 can press against the centrifugal friction member 400 along the direction of the axis Y. Specifically, it can press against the main body 410 of the centrifugal friction member 400 to limit the main displacement of the centrifugal friction member 400 to the radial displacement, so as to prevent the centrifugal friction member 400 from falling off.

[0085] Please refer to Figure 3 for reference Figures 15 to 17 , Figure 15 which is a schematic perspective view of a partial winding mechanism in the first state provided by some embodiments of the present application, Figure 16 is Figure 15 a schematic exploded view of the partial winding mechanism shown in Figure 17 is Figure 16 a further schematic exploded view of the partial winding mechanism shown in

[0086] In some embodiments, a convex column 350 can be provided on the end surface of the winding disc 300. The limiting member 700 can be provided with a mounting hole 701. The convex column 350 can pass through the mounting hole 701 and be in interference fit with the hole wall of the mounting hole 701 to realize the fixation of the limiting member 700 on the end surface of the winding disc 300. Among them, the limiting member 700 can be a flexible structural member, such as a silica gel member.

[0087] The winding mechanism 10 can control the pressing force of the limiting member 700 on the centrifugal friction member 400 by adjusting the mounting height of the limiting member 700 on the convex column 350. Furthermore, the relationship between the displacement amount of the centrifugal friction member 400 under the centrifugal force and the rotation speed of the winding disc 300 can be adjusted. Thus, the winding mechanism 10 can adjust the second speed corresponding to the second state to a magnitude corresponding to the cable 200 recovery speed.

[0088] In some embodiments, the centrifugal friction member 400 includes a main body 410 and a friction portion 430. The friction portion 430 is provided on one side of the main body 410 close to the housing 100 on the periphery of the winding disc 300. Taking the first surrounding wall 111 being on the periphery of the winding disc 300 as an example, the friction portion 430 is provided on one side of the main body 410 close to the first surrounding wall 111, and the friction portion 430 is used to generate friction with the first surrounding wall 111. Optionally, the centrifugal friction member 400 includes a main body 410, a limiting portion 420, and a friction portion 430. The limiting portion 420 can protrude from one end of the main body 410 away from the first surrounding wall 111, and the friction portion 430 can be provided on one end of the main body 410 close to the first surrounding wall 111. The specific structure of the limiting portion 420 has been described above and will not be elaborated here.

[0089] Among them, the friction part 430 can protrude from the main body 410 along the extending direction of the axis line Y. The limiting part 700 can press against the main body 410. The limiting part 700 can be opposite to the side of the protruding part of the friction part 430 that faces away from the first surrounding wall 111. In the first state, the limiting part 700 can abut against the side of the protruding part of the friction part 430 that faces away from the first surrounding wall 111 to limit the displacement of the centrifugal friction part 400 along the radial direction of the winding disc 300. Among them, the centrifugal friction part 400 can be arc-shaped, and the side of the limiting part 700 for pressing against the part of the friction part 430 protruding from the main body 410 can also be arc-shaped, and the radian is adapted to the radian of the friction part 430.

[0090] The winding mechanism 10 provided by the embodiment of the present application can, through the cooperation of the above-mentioned winding disc 300, cable 200, centrifugal friction part 400 and housing 100, enable the centrifugal friction part 400 to move into contact with the housing 100 when the winding disc 300 rotates at a high speed, so as to reduce the rotation speed of the winding disc 300, and further reduce the pulling speed of the cable 200. The winding mechanism 10 can also, through the cooperation of the above-mentioned limiting part 700, limiting part 420 and the groove wall of the accommodating groove 301, limit the displacement of the centrifugal friction part 400 caused by the change of the rotation speed of the winding disc 300 within a preset range, so that the centrifugal deceleration structure of the winding mechanism 10 can have an effect for a long time and stably.

[0091] The embodiment of the present application also provides a charging device. Please refer to Figure 18 , Figure 18 is a schematic structural diagram of a charging device provided by some embodiments of the present application.

[0092] In the embodiment of the present application, the charging device 20 can include the above-mentioned winding mechanism 10. The charging device 20 includes a charging cable 21, and the charging cable 21 is the above-mentioned cable 200 of the winding mechanism 10. The charging cable 21 of the charging device 20 can be pulled out for connecting an external electronic device and charging it. The charging device 20 can also include a power supply 22, and the power supply 22 is electrically connected to the charging cable 21 for charging an external electronic device through the charging cable 21.

[0093] It can be understood that in other embodiments of the present application, the winding mechanism 10 can also be applied to products in other fields, and its cable 200 is not limited to being a charging cable 21.

[0094] In the description of the present application, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms are not necessarily directed to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0095] The above are only some embodiments of the present application, and thus do not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present application, or directly or indirectly applied in other related technical fields, shall be similarly included in the patent protection scope of the present application.

Claims

1. A wire winding mechanism, characterized in that, The winding mechanism comprises: A winding drum, wherein the winding drum is provided with a receiving groove, and the receiving groove penetrates to the peripheral side surface of the winding drum; A cable, the cable being wound around the circumference of the winding drum; A first housing, the first housing being rotatably connected to the wire winding drum, the first housing comprising a first surrounding wall, the first surrounding wall being located at the periphery of the wire winding drum; and a centrifugal friction member, wherein at least a portion of the centrifugal friction member is movably disposed in the accommodating groove; When the cable is drawn out or recovered, the cable winding drum rotates relative to the first shell, so that the centrifugal friction member rubs against the first surrounding wall under the centrifugal action.

2. The winding mechanism according to claim 1, characterized in that, In a first state, the winding disk is stationary relative to the first shell or rotates at a first speed, and the centrifugal friction member is spaced from the first surrounding wall; in a second state, the winding disk rotates at a second speed relative to the first shell, the second speed is greater than the first speed, and the centrifugal friction member is displaced relative to the winding disk under the action of centrifugation and contacts the first surrounding wall.

3. The winding mechanism according to claim 2, wherein, The winding disk includes a first groove wall for forming the accommodating groove, the first groove wall forms part of the peripheral side of the winding disk, and an inlet and outlet are opened on the first groove wall; the centrifugal friction member includes a main body and a limiting portion, and the limiting portion is convexly arranged on the main body; When the wire winding mechanism switches from the first state to the second state, the main body is displaced relative to the first groove wall and passes through the entrance and exit, and the limiting portion is accommodated in the accommodating groove in both the first state and the second state, and presses against the first groove wall in the second state.

4. The winding mechanism according to claim 1, characterized in that, The accommodating groove also passes through an end surface of the winding disk along the axis, and a limiting member is provided on the end surface. The limiting member is connected to the winding disk and presses the centrifugal friction member.

5. The winding mechanism according to claim 4, wherein, The centrifugal friction member includes a main body and a friction portion, wherein the friction portion is arranged on a side of the main body close to the first surrounding wall, and the friction portion is used to rub against the first surrounding wall; The friction part protrudes from the main body along the extension direction of the axis, and the limiting member presses against the main body and is directly opposite to the side of the protruding part of the friction part away from the first surrounding wall.

6. The winding mechanism according to claim 4, characterized in that, A boss is provided on the end surface of the winding drum, and a mounting hole is opened in the limiting member. The boss passes through the mounting hole and is interference-fitted with the hole wall of the mounting hole.

7. The winding mechanism according to claim 1, wherein The wire winding mechanism comprises an elastic member, which is arranged between the centrifugal friction member and the wire winding disk, and has one end in contact with the wire winding disk and the other end in contact with a side of the centrifugal friction member away from the first surrounding wall.

8. The winding mechanism according to claim 1, characterized in that A plurality of friction protrusions are provided on a surface of the centrifugal friction member facing the first surrounding wall.

9. The coiling mechanism according to claim 1, wherein The winding reel includes a first protrusion, a winding portion, and a second protrusion arranged in sequence along an axial line, the first protrusion and the second protrusion are respectively arranged at two ends of the winding portion along the axial line, the widths of the first protrusion and the second protrusion are both greater than the width of the winding portion, the cable is wound around the winding portion, and the accommodating groove is provided on the circumference of at least one of the first protrusion and the second protrusion.

10. The wire winding mechanism according to claim 9, characterized in that, The winding mechanism also includes a second shell body rotatably connected to the winding reel, the second shell body includes a second surrounding wall, the second surrounding wall is connected to the first surrounding wall, one of the first surrounding wall and the second surrounding wall is located on the periphery of the first protrusion, and the other is located on the periphery of the second protrusion.

11. The winding mechanism according to claim 10, wherein, The first shell and the second shell are arranged to form an installation space, and the winding drum is accommodated in the installation space. The winding drum includes a rotating shaft and is rotatably connected to the first shell and the second shell through the rotating shaft, and the rotating shaft extends outside the installation space; the winding mechanism includes a reset member, and the reset member is located outside the installation space, and one end of the reset member is connected to the rotating shaft and the other end is connected to the first shell or the second shell.

12. The winding mechanism according to claim 11, wherein One of the first shell and the second shell is provided with a mounting groove along the side of the axis away from the first protrusion, the rotating shaft extends into the mounting groove along the axis, the reset member is accommodated in the mounting groove, one end of the reset member is connected to the rotating shaft, and the other end is connected to the groove wall of the mounting groove, and is used for providing a restoring force for the winding drum to rotate in the opposite direction when the cable is pulled out and drives the winding drum to rotate.

13. A charging device, characterized in that, The charging device includes a power source and a wire winding mechanism as described in any one of claims 1 to 12, the cable of the wire winding mechanism is a charging cable, and the power source is electrically connected to the charging cable.

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