Winding mechanism and charging device

Abstract

The present application relates to the technical field of electronic devices. Provided are a winding mechanism and a charging device. The winding mechanism comprises a cable spool, a cable, a first housing and a centrifugal friction member, wherein the cable spool is provided with an accommodating groove, and the accommodating groove penetrates to a peripheral side surface of the cable spool; the cable is wound around the peripheral side of the cable spool; the first housing is rotatably connected to the cable spool, and comprises a first surrounding wall, the first surrounding wall being located on the periphery of the cable spool; at least part of the centrifugal friction member is accommodated in the accommodating groove; and when the cable is pulled out or retracted, the cable spool rotates relative to the first housing, such that the centrifugal friction member rubs against the first surrounding wall under centrifugal action. In the present application, by means of arranging the accommodating groove in the peripheral side surface of the cable spool, accommodating at least part of the centrifugal friction member in the accommodating groove, and arranging the first surrounding wall on the periphery of the cable spool, when the cable spool rotates, the centrifugal friction member in the accommodating groove rubs against the first surrounding wall under the centrifugal action, thereby decelerating the cable spool.

Description

Wire winding mechanism and charging device

[0001] The present application claims priority to the Chinese patent application No. 202422307720.4, filed on September 20, 2024, and entitled "Wire winding mechanism and charging device", the content of which is incorporated herein by reference in its entirety.

[0002]

TECHNICAL FIELD

[0003] The present application relates to the technical field of electronic devices, in particular to a wire winding mechanism and a charging device.

[0004]

BACKGROUND

[0005] The wire winding mechanism is a device that can wind a cable in a housing or can draw out the cable for use. It is commonly used in digital charging products, such as power banks with charging cables, so that the charging cable can be drawn out or automatically retracted. The wire winding mechanism usually uses a coil spring or other elastic structural member to achieve automatic retraction of the cable, so the retraction speed of the cable is usually very fast, causing the cable to swing violently during retraction, which not only easily damages the wire winding mechanism itself, but also can cause injury to the user.

[0006]

SUMMARY

[0007] Embodiments of the present application provide a wire winding mechanism, which comprises:

[0008] A winding disc, the winding disc is provided with a receiving groove, the receiving groove penetrates to the peripheral side surface of the winding disc;

[0009] A cable, the cable is wound around the peripheral side of the winding disc;

[0010] A first housing, the first housing is rotationally connected with the winding disc, the first housing comprises a first enclosing wall, the first enclosing wall is located at the periphery of the winding disc; and

[0011] A centrifugal friction member, the centrifugal friction member is at least partially movably arranged in the receiving groove;

[0012] When the cable is drawn out or retracted, the winding disc rotates relative to the first housing, so that the centrifugal friction member rubs against the first enclosing wall under the action of centrifugal force.

[0013] Embodiments of the present application also provide a charging device, which comprises a power supply and the above-mentioned wire winding mechanism, the cable of the wire winding mechanism is a charging cable, and the power supply is electrically connected with the charging cable.

[0014] Compared with the prior art, the wire winding mechanism provided by the present application has the following advantages:

[0015] The application makes the winding drum rotate when the cable is drawn out or retracted by winding the cable on the circumferential side of the winding drum. The application also sets the accommodation groove on the circumferential side of the winding drum, and at least partially accommodates the centrifugal friction member in the accommodation groove, and sets the first enclosing wall on the periphery of the winding drum, so that the centrifugal friction member in the accommodation groove rubs against the first enclosing wall under the centrifugal effect when the winding drum rotates. The faster the rotation speed of the winding drum, the greater the normal pressure of the centrifugal friction member on the first enclosing wall under the centrifugal effect, and the greater the friction force generated. Thus, the speed of the winding drum can be reduced, and the retraction speed of the cable can be avoided.

[0016] BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiments will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0018] FIG. 1 is a perspective structural schematic view of the winding mechanism provided by some embodiments of the present application;

[0019] FIG. 2 is an exploded structural schematic view of the winding mechanism in the embodiment of FIG. 1;

[0020] FIG. 3 is a cross-sectional structural schematic view of the winding mechanism provided by some embodiments of the present application in a first state;

[0021] FIG. 4 is a cross-sectional structural schematic view of the winding mechanism in the embodiment of FIG. 3 in a second state;

[0022] FIG. 5 is a cooperation structural schematic view of the centrifugal friction member and part of the winding drum provided by some embodiments of the present application;

[0023] FIG. 6 is a partial structural schematic view of the winding mechanism provided by some embodiments of the present application;

[0024] FIG. 7 is a cooperation structural schematic view of the centrifugal friction member and the first enclosing wall provided by some embodiments of the present application;

[0025] FIG. 8 is a perspective structural schematic view of part of the winding mechanism provided by some embodiments of the present application;

[0026] FIG. 9 is an exploded structural schematic view of part of the winding mechanism in the embodiment of FIG. 8;

[0027] FIG. 10 is a partial exploded structural schematic view of the winding mechanism provided by some embodiments of the present application;

[0028] FIG. 11 is a cooperation structural schematic view of the winding drum and the centrifugal friction member in a first state provided by some embodiments of the present application;

[0029] Fig. 12 is a schematic view of the cooperation structure of the winding reel and the centrifugal friction member in the second state in the embodiment of Fig. 11;

[0030] Fig. 13 is a schematic view of the cooperation structure of the partial winding mechanism in the first state according to some embodiments of the present application;

[0031] Fig. 14 is a schematic view of the cooperation structure of the partial winding mechanism in the second state according to some embodiments of the present application;

[0032] Fig. 15 is a schematic view of the cooperation structure of the partial winding mechanism in the first state according to some embodiments of the present application;

[0033] Fig. 16 is a schematic view of the cooperation structure of the partial winding mechanism in the first state according to some embodiments of the present application;

[0034] Fig. 17 is a schematic view of the cooperation structure of the partial winding mechanism in the first state according to some embodiments of the present application;

[0035] Fig. 18 is a schematic view of the cooperation structure of the charging device according to some embodiments of the present application.

[0036]

DETAILED DESCRIPTION

[0037] In the following description, specific details are set forth in order to provide a thorough understanding of the embodiments of the application. However, persons having ordinary skill in the art will readily recognize that the application can be practiced without these specific details. In other instances, well-known structures, circuits, and processes have not been described in detail in order not to unnecessarily obscure aspects of the application.

[0038] In order to make the above objectives, features and advantages of the application more clear and comprehensible, specific embodiments of the application will be described in detail below with reference to the accompanying drawings. It should be understood that the described embodiments are only some embodiments of the application, but not all embodiments of the application. Based on the embodiments in the present application, all other embodiments obtained by persons having ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0039] The present application provides a winding mechanism. Please refer to Fig. 1 and Fig. 2, Fig. 1 is a schematic view of the winding mechanism according to some embodiments of the present application, and Fig. 2 is a schematic view of the cooperation structure of the winding mechanism according to some embodiments of the present application.

[0040] In some embodiments, the winding mechanism 10 comprises a housing 100, a cable 200 and a winding disc 300. As shown in FIG. 1, the cable 200 can be retracted into the housing 100 with only the end portion located outside the housing 100 for being pulled by a user. As shown in FIG. 2, the cable 200 can be coiled after being retracted. The cable 200 can be wound on the winding disc 300, thereby driving the winding disc 300 to rotate when being pulled out or retracted. The cable 200 can be designed in a corresponding structure according to the actual application of the winding mechanism 10.

[0041] The winding mechanism 10 can comprise one or more winding discs 300. Each winding disc 300 can be wound with a cable 200 on the periphery thereof. In some embodiments, the housing 100 of the winding mechanism 10 is provided with only one winding disc 300, and a through hole for the cable 200 to pass through can be formed on the surface of the housing 100. In other embodiments, the housing 100 of the winding mechanism 10 is provided with a plurality of winding discs 300, and a plurality of through holes for the cable 200 to pass through can be formed on the surface of the housing 100. In some embodiments, the axes Y of the plurality of winding discs 300 coincide, and the plurality of winding discs 300 are arranged in layers. In other embodiments, the axes Y of the plurality of winding discs 300 are parallel, and the plurality of winding discs 300 can be arranged on the same horizontal plane or different horizontal planes. In other embodiments, the axes Y of the plurality of winding discs 300 can also form an acute angle, and the plurality of winding discs 300 can be arranged inclined to each other.

[0042] Optionally, the winding mechanism 10 can comprise a first shell 110 and a second shell 120. The first shell 110 and the second shell 120 can be connected to form the housing 100 of the winding mechanism 10. The first shell 110 and the second shell 120 cooperatively enclose the winding disc 300. The winding disc 300 can rotate relative to the first shell 110 and the second shell 120. The first shell 110 and the second shell 120 can be rotationally connected to the winding disc 300. In some embodiments, the first shell 110 can serve as a top cover of the winding mechanism 10 and be located at least partially on the top side of the winding disc 300, and the second shell 120 can serve as a base of the winding mechanism 10 and be located at least partially on the bottom side of the winding disc 300. In other embodiments, the first shell 110 and the second shell 120 can also be arranged in an inverted or other orientation. At least one of the first shell 110 and the second shell 120 can also have a surrounding wall located on the periphery of the winding disc 300.

[0043] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting. As used in this specification and the appended claims, the singular forms "a," "an" and "the" include plural referents unless the context clearly dictates otherwise. As used in this specification and the appended claims, the term "or" as used in a phrase such as "A or B" can be interpreted as "both A and B," and "first" and "second" are used to denote different elements of the description, not to denote relative importance of the elements. Thus, a feature defined with "first" and "second" can include one or more of the features. Also, the meaning of "a plurality" is two or more, unless explicitly stated otherwise.

[0044] In some embodiments, the winding mechanism 10 further comprises a centrifugal friction member 400. The centrifugal friction member 400 is movably arranged on the winding disc 300, and can be flung out by centrifugal force when the winding disc 300 rotates at high speed, and then rub against the structural member on the periphery of the winding disc 300 to slow down the winding disc 300, so as to avoid the excessive speed of the cable 200. The structural member on the periphery of the winding disc 300 can be the outer shell 100, for example, the first shell 110. It can be understood that the faster the winding disc 300 rotates, the greater the positive pressure of the centrifugal friction member 400 on the outer shell 100 under the centrifugal force, and the greater the friction force generated, so as to slow down the winding disc 300.

[0045] Please refer to FIG. 3 and FIG. 4, FIG. 3 is a cross-sectional structure schematic diagram of the winding mechanism in a first state according to some embodiments of the present application, and FIG. 4 is a cross-sectional structure schematic diagram of the winding mechanism in a second state according to the embodiment of FIG. 3.

[0046] In some embodiments, the winding disc 300 is provided with a receiving groove 301, which penetrates to the peripheral side surface of the winding disc 300. The centrifugal friction member 400 is movably arranged at least partially in the receiving groove 301, so that when the winding disc 300 rotates at high speed, the centrifugal friction member 400 in the receiving groove 301 is flung out from the peripheral side surface of the winding disc 300, and then rubs against the outer shell 100.

[0047] In some embodiments, the first shell 110 can include a first surrounding wall 111, which is located at the periphery of the winding disc 300. The first shell 110 can be rotationally connected with the winding disc 300. The winding disc 300 is wound with the cable 200 on its periphery, so that when the cable 200 is drawn out or retracted, the winding disc 300 rotates relative to the first shell 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 or rotates at a first speed relative to the first shell 110, and the centrifugal friction piece 400 is spaced apart from the first surrounding wall 111. In the second state, the winding disc 300 rotates at a second speed relative to the first shell 110, and the centrifugal friction piece 400 is displaced relative to the winding disc 300 under the action of centrifugal force and contacts the first surrounding wall 111.

[0048] In some embodiments, the first shell 110 can include a first surrounding wall 111, which is located at the periphery of the winding disc 300. The first shell 110 can be rotationally connected with the winding disc 300. The winding disc 300 is wound with the cable 200 on its periphery, so that when the cable 200 is drawn out or retracted, the winding disc 300 rotates relative to the first shell 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 or rotates at a first speed relative to the first shell 110, and the centrifugal friction piece 400 is spaced apart from the first surrounding wall 111. In the second state, the winding disc 300 rotates at a second speed relative to the first shell 110, and the centrifugal friction piece 400 is displaced relative to the winding disc 300 under the action of centrifugal force and contacts the first surrounding wall 111.

[0049] In some embodiments, the first shell 110 can include a first surrounding wall 111, which is located at the periphery of the winding disc 300. The first shell 110 can be rotationally connected with the winding disc 300. The winding disc 300 is wound with the cable 200 on its periphery, so that when the cable 200 is drawn out or retracted, the winding disc 300 rotates relative to the first shell 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 or rotates at a first speed relative to the first shell 110, and the centrifugal friction piece 400 is spaced apart from the first surrounding wall 111. In the second state, the winding disc 300 rotates at a second speed relative to the first shell 110, and the centrifugal friction piece 400 is displaced relative to the winding disc 300 under the action of centrifugal force and contacts the first surrounding wall 111.

[0050] In some embodiments, the first shell 110 can include a first surrounding wall 111, which is located at the periphery of the winding disc 300. The first shell 110 can be rotationally connected with the winding disc 300. The winding disc 300 is wound with the cable 200 on its periphery, so that when the cable 200 is drawn out or retracted, the winding disc 300 rotates relative to the first shell 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 or rotates at a first speed relative to the first shell 110, and the centrifugal friction piece 400 is spaced apart from the first surrounding wall 111. In the second state, the winding disc 300 rotates at a second speed relative to the first shell 110, and the centrifugal friction piece 400 is displaced relative to the winding disc 300 under the action of centrifugal force and contacts the first surrounding wall 111.

[0051] When the winding reel 300 rotates relative to the first enclosing wall 111, the centrifugal friction member 400 will rub against the first enclosing wall 111 under the centrifugal force. At this time, the normal pressure of the centrifugal friction member 400 against the first enclosing wall 111 under the centrifugal force is increased relative to the case when the winding reel 300 is stationary, so that the friction between the centrifugal friction member 400 and the first enclosing wall 111 can be increased. The faster the winding reel 300 rotates, the greater the normal pressure of the centrifugal friction member 400 against the first enclosing wall 111, and the greater the friction between the centrifugal friction member 400 and the first enclosing wall 111.

[0052] It should be understood that the terms "comprise" and "have", and any variations thereof, used in the present application and the appended claims are intended to cover both the exclusive and the non-exclusive inclusion of the elements. For example, a process, method, system, product or apparatus that comprises a list of steps or units is not limited to the listed steps or units, but can optionally further include other steps or units not listed, or can optionally further include other steps or units inherent to such processes, methods, products or apparatus.

[0053] The centrifugal friction member 400 in the second state can abut against the groove wall of the accommodating groove 301, so that the winding reel 300 is decelerated. For example, the centrifugal friction member 400 in the second state abuts against the side wall of the accommodating groove 301 along the circumferential direction of the winding reel 300. In other embodiments, the centrifugal friction member 400 in the second state can also abut against other parts of the winding reel 300, or abut against other structural members provided on the winding reel 300, so that the winding reel 300 can be decelerated.

[0054] Please refer to FIG. 5, which is a schematic diagram of the cooperation structure of the centrifugal friction member and part of the winding reel according to some embodiments of the present application. In some embodiments, the bottom wall of the accommodating groove 301 can be provided with a sliding track 3011. The sliding track 3011 can be a track extending along the radial direction of the winding reel 300. The centrifugal friction member 400 comprises a sliding part 4001, which is arranged on the sliding track 3011 and can move along the sliding track 3011 towards or away from the first enclosing wall 111. In the second state, the sliding part 4001 of the centrifugal friction member 400 can abut against the sliding track 3011 along the circumferential direction of the winding reel 300, so that the winding reel 300 is decelerated.

[0055] As shown in FIG. 5, the sliding track 3011 can be a strip-shaped sliding groove, and the sliding part 4001 of the centrifugal friction member 400 can be a sliding block adapted to the strip-shaped sliding groove. When the winding reel 300 rotates, the sliding part 4001 can press against the sliding groove wall of the sliding track 3011. In other embodiments, the sliding track 3011 can also be a strip-shaped protrusion, and correspondingly, the sliding part 4001 of the centrifugal friction member 400 can be 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 reel 300 rotates.

[0056] Optionally, the centrifugal friction member 400 is at least partially made of a thermal expansion material, so that the centrifugal friction member 400 can expand and further increase the normal pressure of the centrifugal friction member 400 on the first surrounding wall 111, and further increase the deceleration effect, as the centrifugal friction member 400 generates heat by friction with the first surrounding wall 111.

[0057] Please refer to FIG. 6 in combination with FIG. 4, which is a schematic diagram of part of the winding mechanism according to some embodiments of the present application.

[0058] Optionally, the winding mechanism 10 can include an elastic member 500. The elastic member 500 is arranged between the centrifugal friction member 400 and the winding reel 300, and one end of the elastic member 500 contacts the winding reel 300, and the other end of the elastic member 500 contacts the side of the centrifugal friction member 400 away from the first surrounding wall 111. The elastic member 500 can be a compression spring.

[0059] In some embodiments, the elastic member 500 can be in a compressed state in the second state, and can 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 between the centrifugal friction member 400 and the first surrounding wall 111, so as to improve the deceleration effect.

[0060] In other embodiments, the elastic member 500 can be in a stretched state in the second state, and the elastic member 500 can be connected to the side of the centrifugal friction member 400 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 reel 300 decreases and the centrifugal force decreases, the centrifugal friction member 400 can be reset under the action of the elastic member 500.

[0061] Please refer to FIG. 7 in combination with FIG. 4, which is a schematic diagram of the cooperation structure of the centrifugal friction member and the first surrounding wall according to some embodiments of the present application.

[0062] In some embodiments, the centrifugal friction member 400 is provided with a plurality of friction protrusions 411 on the surface thereof facing the first enclosing wall 111, so as to increase the sliding friction between the centrifugal friction member 400 and the first enclosing wall 111 in the second state. The specific structure of the plurality of friction protrusions 411 can be set according to actual conditions.

[0063] For example, the friction protrusions 411 can be protrusions on the surface of the centrifugal friction member 400, which can be but are not limited to hemispherical protrusions or prismatic protrusions. A plurality of protrusions can be distributed on the surface of the centrifugal friction member 400 facing the first enclosing wall 111, forming a plurality of friction protrusions 411. For another example, a recess structure can be formed on the surface of the centrifugal friction member 400 facing the first enclosing wall 111, which can be but is not limited to a strip-shaped groove, so that the surface without the recess forms the friction protrusions 411.

[0064] The centrifugal friction member 400 of the embodiments of the present application can press the first enclosing wall 111 under the action of centrifugal force when the winding disc 300 rotates, and rubs against the first enclosing wall 111 through the friction protrusions 411. The greater the friction between the centrifugal friction member 400 and the first enclosing wall 111, the better the deceleration effect. The centrifugal friction member 400 contacts the first enclosing wall 111 through the friction protrusions 411 protruding on the surface thereof, which can increase the friction coefficient of the centrifugal friction member 400, improve the friction between the centrifugal friction member 400 and the first enclosing wall 111, and further improve the deceleration effect.

[0065] Please refer to Figs. 8 and 9 in combination with Fig. 4, Fig. 8 is a schematic diagram of the perspective structure of part of the winding mechanism according to some embodiments of the present application, and Fig. 9 is a schematic diagram of the exploded structure of part of the winding mechanism in the embodiment of Fig. 8.

[0066] In some embodiments, the winding disc 300 comprises a first protruding portion 310, a winding portion 320 and a second protruding portion 330 arranged in sequence along the axis Y. The first protruding portion 310 and the second protruding portion 330 are respectively arranged at the two ends of the winding portion 320 along the axis Y. The widths of the first protruding portion 310 and the second protruding portion 330 are greater than the width of the winding portion 320. The projections of the first protruding portion 310 and the second protruding portion 330 along the axis Y direction completely cover the winding portion 320, so that the winding disc 300 forms a shape similar to an I-shaped beam. The cable 200 of the winding mechanism 10 is wound around the winding portion 320, so that the winding disc 300 can rotate around the axis Y like a top as the cable 200 is drawn out or retracted.

[0067] The circumferential side of at least one of the first protruding part 310 and the second protruding part 330 is provided with a receiving groove 301. The receiving groove 301 is used to accommodate the centrifugal friction piece 400. In other words, the winding mechanism 10 can place the centrifugal friction piece 400 on at least one of the first protruding part 310 and the second protruding part 330. Understandably, the circumferential side of the first protruding part 310 and the second protruding part 330 also serves as the circumferential side of the winding reel 300. Alternatively, the receiving groove 301 is provided on the first protruding part 310, the receiving groove 301 penetrates to the circumferential side of the first protruding part 310, and the first enclosing wall 111 can be located at the periphery of the first protruding part 310. Alternatively, the receiving groove 301 is provided on the second protruding part 330, the receiving groove 301 penetrates to the circumferential side of the second protruding part 330, and the first enclosing wall 111 can be located at the periphery of the second protruding part 330.

[0068] In some embodiments, the second housing 120 of the winding mechanism 10 comprises a second enclosing wall 121. The second housing 120 can be rotationally connected with the winding reel 300. The second enclosing wall 121 can be in abutment with the first enclosing wall 111. The first enclosing wall 111 and the second enclosing wall 121 can cooperate to form the sidewall of the housing 100. Among them, one of the first enclosing wall 111 and the second enclosing wall 121 can be located at the periphery of the first protruding part 310, and the other can be located at the periphery of the second protruding part 330. For example, as shown in FIG. 4, the first enclosing wall 111 is located at the periphery of the first protruding part 310, and the second enclosing wall 121 is located at the periphery of the second protruding part 330.

[0069] Among them, the circumferential side of the first protruding part 310 can be provided with a receiving groove 301. The centrifugal friction piece 400 can be at least partially disposed in the receiving groove 301, used to rub with the first enclosing wall 111 in the second state to achieve the deceleration of the winding reel 300. Of course, this is only an example provided by the embodiments of the present application. Alternatively, the circumferential side of the second protruding part 330 can also be provided with a receiving groove 301, and another centrifugal friction piece 400 can be at least partially disposed therein, used to rub with the second enclosing wall 121 in the second state. Understandably, the circumferential side of the first protruding part 310 and the second protruding part 330 can be provided with one or more receiving grooves 301, and the centrifugal friction piece 400 can be at least partially disposed in the receiving groove 301 one by one.

[0070] Please refer to FIG. 4, FIG. 9 and FIG. 10, FIG. 10 is a partially exploded structural schematic view of the winding mechanism provided by some embodiments of the present application.

[0071] In some embodiments, the winding reel 300 further comprises a rotating shaft 340, and the rotating shaft 340 extends along the axis Y of the winding reel 300. The rotating shaft 340 can serve as the central axis of the winding reel 300. The rotating shaft 340 is fixed to the protrusion, so that when the protrusion is rotated by the cable 200, the rotating shaft 340 is also rotated 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 winding reel 300 can be rotatably connected to at least one of the first housing 110 and the second housing 120 through the rotating shaft 340.

[0072] The winding mechanism 10 can comprise a reset member 600, which can be a coil spring as shown in FIG. 10, or other structural member capable of deforming and recovering, such as a torsion spring, for providing a restoring force for the winding reel 300 to rotate in the opposite direction when the winding reel 300 is rotated. The reset member 600 can be connected to the rotating shaft 340. The rotating shaft 340 can extend out of the housing 100, and the reset member 600 can be arranged on the outer surface of the housing 100 and connected to the rotating shaft 340 extending out of the housing 100, so as to reduce the installation difficulty of the winding mechanism 10.

[0073] Optionally, the first housing 110 and the second housing 120 can surround to form a mounting space 101. The winding reel 300 can be accommodated in the mounting space 101, and the rotating shaft 340 of the winding reel 300 can extend out of the mounting space 101. The rotating shaft 340 can pass through at least one of the first housing 110 and the second housing 120.

[0074] The rotating shaft 340 can extend into the mounting groove 102. The reset member 600 can be accommodated in the mounting groove 102, and one end of the reset member 600 is connected to the rotating 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 reel 300 to rotate in the opposite direction when the cable 200 is pulled out to rotate the winding reel 300, so that the cable 200 can be automatically retracted. For example, as shown in FIG. 4, the rotating shaft 340 can pass through the second housing 120, and the second housing 120 away from the first protrusion 310 is provided with the mounting groove 102. The reset member 600 as shown in FIG. 10 can be arranged in the mounting groove 102 and connected to the rotating shaft 340.

[0075] It can be understood that all direction indications (such as up, down, left, right, front, back, and the like) in the embodiments of the present application are only used to explain the relative position relationship, motion condition and the like between components in a certain specific posture (as shown in the drawings), and if the specific posture changes, the direction indications will also change accordingly.

[0076] In some embodiments, the mounting wall 130 is protruded on the outer surface of the first shell 110 or the second shell 120, and the mounting groove 102 is formed by the mounting wall 130. One end of the reset member 600 can be connected with the mounting wall 130, for example but not limited to clamping. In other embodiments, the mounting groove 102 can also be recessed on the outer surface of the first shell 110 or the second shell 120.

[0077] In some application scenarios, when the cable 200 is pulled out, the winding disc 300 rotates, and the reset member 600 gradually accumulates restoring force in the rotation process of the winding disc 300. When the cable 200 is released, the winding disc 300 rotates in the opposite direction under the action of the restoring force accumulated by the reset member 600, thereby driving the cable 200 to be automatically recovered.

[0078] In order to ensure that the cable 200 can be repeatedly and stably automatically recovered, the reset member 600 usually needs to be designed to provide a larger restoring force in the second state, which also makes the recovery speed of the cable 200 faster. However, the recovery speed of the cable 200 that is too fast is easy to cause the cable 200 to swing rapidly, thereby bringing safety risks. Especially in the case that the external end of the cable 200 is provided with a heavy object such as a charging connector, the swing caused by the rapid recovery of the cable 200 is easy to hurt or even injure the human body.

[0079] Please refer to FIGS. 11 and 12 in combination with FIGS. 3 and 4, FIG. 11 is a schematic view of the cooperation structure of the winding disc and the centrifugal friction member in the first state according to some embodiments of the present application, and FIG. 12 is a schematic view of the cooperation structure of the winding disc and the centrifugal friction member in the second state according to the embodiment of FIG. 11.

[0080] In the embodiments of the present application, the winding mechanism 10 is provided with the accommodation groove 301 on the circumferential side of the winding disc 300, and the centrifugal friction member 400 is at least partially accommodated in the accommodation groove 301, and the first wall 111 is arranged on the periphery of the winding disc 300, so that when the winding disc 300 rotates at high speed, the centrifugal friction member 400 in the accommodation groove 301 will displace under the centrifugal force and contact the first wall 111 to generate friction force, so as to realize the speed reduction of the winding disc 300, thereby avoiding the recovery speed of the cable 200 being too fast.

[0081] Specifically, when the winding mechanism 10 is in the first state, the winding drum 300 can be at a first speed which is relatively slow or static, at which time the centrifugal friction piece 400 can be accommodated in the accommodation groove 301 as shown in FIG. 11, so that there is a gap between the centrifugal friction piece 400 and the first surrounding wall 111 as shown in FIG. 3, and they do not rub against each other, so that the winding drum 300 can rotate smoothly.

[0082] When the winding mechanism 10 is in the second state, the winding drum 300 can be at a second speed which is relatively fast, at which time the centrifugal friction piece 400 will partially move out of the accommodation groove 301 under the action of centrifugal force as shown in FIG. 12, so that the centrifugal friction piece 400 and the first surrounding wall 111 will rub against each other as shown in FIG. 4. In the second state, the centrifugal friction piece 400 can also contact the groove wall of the accommodation groove 301, so that the friction between the centrifugal friction piece 400 and the first surrounding wall 111 can achieve the deceleration of the winding drum 300.

[0083] Through the above design, the embodiment of the application can prevent the rotation speed of the winding drum 300 from being too fast, and thus the recovery speed of the cable 200 can be avoided from being too fast. It should be noted that the winding mechanism 10 provided by the embodiment is only an example, and the design of other embodiments of the application is not limited thereto, and specific can refer to the description above.

[0084] In some embodiments, a plurality of centrifugal friction pieces 400 can be provided on the winding drum 300, and the number of centrifugal friction pieces 400 can be 3 as shown in FIG. 11, or 2 or more than 3. The plurality of centrifugal friction pieces 400 can be distributed at intervals along the circumference of the winding drum 300. In other embodiments, the number of centrifugal friction pieces 400 can also be 1.

[0085] Optionally, the centrifugal friction piece 400 includes a main body 410 and a limiting portion 420. The main body 410 is at least partially accommodated in the accommodation groove 301. The limiting portion 420 can be protruded on the main body 410, for example, protruded on the 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 winding drum 300. The limiting portion 420 is accommodated in the accommodation groove 301. When the winding mechanism 10 is switched from the first state to the second state, the limiting portion 420 can abut against the groove wall of the accommodation groove 301 to prevent the centrifugal friction piece 400 from completely coming out of the accommodation groove 301.

[0086] The winding reel 300 can include a first slot wall 311 for forming the accommodation slot 301, the first slot wall 311 forming a partial circumferential side of the winding reel 300, and the first slot wall 311 being provided with the access opening 302. The main body 410 of the centrifugal friction member 400 can be moved into or out of the accommodation slot 301 through the access opening 302. When the winding mechanism 10 is switched from the first state to the second state, the main body 410 is displaced relative to the first slot wall 311 and passes through the access opening 302. The limiting portion 420 is accommodated in the accommodation slot 301 in both the first state and the second state, and in the second state, the limiting portion 420 abuts against the first slot wall 311 to prevent the centrifugal friction member 400 from moving radially along the winding reel 300 to be separated from the winding reel 300. The two ends of the main body 410 along the circumferential direction of the winding reel 300 can be respectively provided with the limiting portion 420, and in the second state, the two limiting portions 420 can abut against the first slot wall 311 to prevent the centrifugal friction member 400 from falling off.

[0087] Please refer to FIG. 13 and FIG. 14 in combination with FIG. 3 and FIG. 4, FIG. 13 is a structural schematic diagram of part of the winding mechanism in the first state according to some embodiments of the present application, and FIG. 14 is a structural schematic diagram of part of the winding mechanism in the second state according to the embodiment of FIG. 13. The winding mechanism 10 can further include a limiting member 700, which can be used to limit the movement of the centrifugal friction member 400 along the axial center line Y of the winding reel 300.

[0088] In some embodiments, the accommodation slot 301 can pass through to one end surface of the winding reel 300 along the axial center line Y, for example, the top end surface as shown in FIG. 4, so as to facilitate the centrifugal friction member 400 to be assembled into the accommodation slot 301 from the end surface. The limiting member 700 can be arranged on the end surface and abut against the centrifugal friction member 400. The limiting member 700 can be connected to the winding reel 300. The connection mode of the limiting member 700 and the winding reel 300 can be, for example, but not limited to, clamping, bonding, etc.

[0089] During installation, the winding mechanism 10 can assemble the centrifugal friction member 400 into the accommodation slot 301 from one side of the end surface through which the accommodation slot 301 passes, and then connect the limiting member 700 to the end surface of the winding reel 300, so that the limiting member 700 abuts against the centrifugal friction member 400. The side of the centrifugal friction member 400 away from the limiting member 700 can abut against the slot wall of the accommodation slot 301, so that the limiting member 700 and the slot wall of the accommodation slot 301 can cooperate to limit the centrifugal friction member 400 in the axial center line Y direction. In other embodiments, the two ends of the centrifugal friction member 400 along the axial center line Y direction can also abut against two limiting members 700 respectively.

[0090] When the winding mechanism 10 is switched from the first state to the second state, part of the centrifugal friction piece 400 is thrown out of the containing groove 301 under the centrifugal effect and comes into contact with the shell 100 to generate sliding friction. In this process, the limiting piece 700 can press against the centrifugal friction piece 400 in the direction of the axis Y, specifically, can press against the main body 410 of the centrifugal friction piece 400, to limit the main displacement of the centrifugal friction piece 400 to radial displacement, to prevent the centrifugal friction piece 400 from falling off.

[0091] Please refer to FIG. 15 to FIG. 17 in combination with FIG. 3, FIG. 15 is a perspective structural schematic view of part of the winding mechanism in the first state according to some embodiments of the present application, FIG. 16 is an exploded structural schematic view of the part of the winding mechanism shown in FIG. 15, and FIG. 17 is a further exploded structural schematic view of the part of the winding mechanism shown in FIG. 16.

[0092] In some embodiments, the end face of the winding disc 300 can be provided with a convex column 350, and the limiting piece 700 can be provided with a mounting hole 701, the convex column 350 can be provided in 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 piece 700 on the end face of the winding disc 300. The limiting piece 700 can be a flexible structural piece, for example, a silica gel piece.

[0093] The winding mechanism 10 can adjust the installation height of the limiting piece 700 on the convex column 350, to control the control of the pressing force of the limiting piece 700 on the centrifugal friction piece 400, and then can adjust the relationship between the displacement of the centrifugal friction piece 400 under the centrifugal effect and the rotating speed of the winding disc 300, so that the winding mechanism 10 can adjust the second speed corresponding to the second state to a size corresponding to the cable 200 recovery speed.

[0094] In some embodiments, the centrifugal friction piece 400 includes a main body 410 and a friction part 430. The friction part 430 is arranged on the side of the main body 410 close to the shell 100 at the periphery of the winding disc 300. For example, the first surrounding wall 111 is located at the periphery of the winding disc 300, the friction part 430 is arranged on the side of the main body 410 close to the first surrounding wall 111, and the friction part 430 is used to generate friction with the first surrounding wall 111. Optionally, the centrifugal friction piece 400 includes a main body 410, a limiting part 420 and a friction part 430, the limiting part 420 can be protruded at the end of the main body 410 away from the first surrounding wall 111, and the friction part 430 can be arranged at the end of the main body 410 close to the first surrounding wall 111. The specific structure of the limiting part 420 has been described above, and will not be repeated here.

[0095] The friction part 430 can protrude from the main body 410 along the extension direction of the axis Y. The limiting part 700 can abut against the main body 410. The limiting part 700 can be opposite to the protruding part of the friction part 430 and away from the side of the first surrounding wall 111. In the first state, the limiting part 700 can abut against the protruding part of the friction part 430 and away from the side of the first surrounding wall 111, so as to limit the displacement of the centrifugal friction part 400 along the radial direction of the winding disc 300. The centrifugal friction part 400 can be arc-shaped, and the side of the limiting part 700 abutting against the protruding part of the friction part 430 can also be arc-shaped, and the curvature is matched with the curvature of the friction part 430.

[0096] The winding mechanism 10 provided by the embodiments of the present application can make the centrifugal friction part 400 contact 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 displacement of the centrifugal friction part 400 caused by the change of the rotation speed of the winding disc 300 can be limited within a preset range by the cooperation of the limiting part 700, the limiting part 420 and the groove wall of the accommodating groove 301, so that the centrifugal deceleration structure of the winding mechanism 10 can have a long-term and stable effect.

[0097] The embodiments of the present application also provide a charging device. Please refer to FIG. 18, which is a structural schematic diagram of a charging device provided by some embodiments of the present application.

[0098] In the embodiments of the present application, the charging device 20 can include the winding mechanism 10 described above. The charging device 20 includes a charging cable 21, which is the cable 200 of the winding mechanism 10 described above. The charging cable 21 of the charging device 20 can be pulled out to connect to an external electronic device and charge the external electronic device. The charging device 20 can also include a power supply 22, which is electrically connected to the charging cable 21 and used to charge the external electronic device through the charging cable 21.

[0099] 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 the cable 200 is not limited to the charging cable 21.

[0100] In the description of the application, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example" or "some examples" etc. 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 application. In the description, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any suitable manner in any one or more embodiments or examples. In addition, the skilled person in the art can combine and combine the different embodiments or examples described in the specification and the features of the different embodiments or examples without contradiction.

[0101] The above is only some embodiments of the application, and does not limit the patent scope of the application, and any equivalent structure or equivalent process transformation using the content of the specification and drawings, or direct or indirect application in other related technical fields, are also included in the patent protection scope of the application.

Claims

1. A take-up mechanism characterized by comprising: The winding mechanism comprises: a winding reel, the winding reel being provided with a receiving groove penetrating a peripheral side surface of the winding reel; a cable, the cable being wound around a peripheral side of the winding reel; a first housing, the first housing being rotationally connected with the winding reel, the first housing comprising a first enclosing wall, the first enclosing wall being located at a periphery of the winding reel; and a centrifugal friction member, the centrifugal friction member being at least partially movably arranged in the receiving groove; wherein, when the cable is drawn out or retracted, the winding reel rotates relative to the first housing so that the centrifugal friction member rubs against the first enclosing wall under the action of centrifugal force.

2. The cord winding mechanism according to claim 1, characterized by In a first state, the winding reel is stationary or rotates at a first speed relative to the first housing, and the centrifugal friction member is spaced apart from the first enclosing wall; in a second state, the winding reel rotates at a second speed relative to the first housing, the second speed being greater than the first speed, and the centrifugal friction member is displaced relative to the winding reel under the action of centrifugal force to contact the first enclosing wall.

3. The cord winding mechanism according to claim 2, characterized by The winding reel comprises a first groove wall for forming the receiving groove, the first groove wall forming part of the peripheral side surface of the winding reel, and an entrance being formed in the first groove wall; the centrifugal friction member comprises a main body and a limiting portion, the limiting portion being protruded from the main body; when the winding mechanism is switched 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 the limiting portion is accommodated in the receiving groove in both the first state and the second state, and abuts against the first groove wall in the second state.

4. The cord winding mechanism according to claim 1, wherein The receiving groove also penetrates an end surface of the winding reel along an axial line, and a limiting member is arranged on the end surface, the limiting member being connected to the winding reel and abutting against the centrifugal friction member.

5. The cord winding mechanism according to claim 4, wherein The centrifugal friction member comprises a main body and a friction portion, the friction portion being arranged on a side of the main body close to the first enclosing wall, and the friction portion is used for rubbing against the first enclosing wall; wherein, the friction portion protrudes from the main body along the extension direction of the axial line, the limiting member abuts against the main body, and is opposite to the protruding portion of the friction portion away from the first enclosing wall.

6. The cord winding mechanism according to claim 4, wherein The end surface of the winding reel is provided with a protruding column, the limiting member is provided with a mounting hole, the protruding column is arranged in the mounting hole and is in interference fit with the hole wall of the mounting hole.

7. The cord winding mechanism according to claim 1, wherein The winding mechanism comprises an elastic member, the elastic member being arranged between the centrifugal friction member and the winding reel, and one end of the elastic member abutting against the winding reel and the other end of the elastic member abutting against a side of the centrifugal friction member away from the first enclosing wall.

8. The cord winding mechanism according to claim 1, wherein A plurality of friction protrusions are arranged on a surface of the centrifugal friction member facing the first enclosing wall.

9. The cord winding mechanism according to claim 1, wherein The winding reel comprises a first protruding portion, a winding portion and a second protruding portion arranged in sequence along an axial line, the first protruding portion and the second protruding portion being arranged at two ends of the winding portion along the axial line, the widths of the first protruding portion and the second protruding portion being greater than the width of the winding portion, the cable being wound around a peripheral side of the winding portion, and the receiving groove being arranged on a peripheral side of at least one of the first protruding portion and the second protruding portion.

10. The cord winding mechanism according to claim 9, wherein The winding mechanism further comprises a second housing connected with the winding drum, the second housing comprises a second surrounding wall, the first surrounding wall and the second surrounding wall are connected with each other, one of the first surrounding wall and the second surrounding wall is located at the periphery of the first protruding part, and the other is located at the periphery of the second protruding part.

11. The cord winding mechanism according to claim 10, wherein The first housing and the second housing form an installation space, the winding drum is accommodated in the installation space, the winding drum comprises a rotating shaft, and the rotating shaft is connected with the first housing and the second housing in a rotating manner, the rotating shaft extends out of the installation space; the winding mechanism comprises a reset member, one end of the reset member is connected with the rotating shaft, and the other end of the reset member is connected with the first housing or the second housing.

12. The cord winding mechanism according to claim 11, wherein One of the first housing and the second housing is provided with a mounting groove on the side away from the first protruding part along the axis, 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 with the rotating shaft, and the other end of the reset member is connected with the groove wall of the mounting groove, so as to provide a restoring force for the winding drum to rotate in the opposite direction when the cable is pulled out to drive the winding drum to rotate.

13. A charging device, characterized by The charging device comprises a power supply and the winding mechanism according to any one of claims 1-12, the cable of the winding mechanism is a charging cable, and the power supply is electrically connected with the charging cable.

Images