Conveniently assembled take-up assembly and intelligent body fat scale

Abstract

The application provides a convenient assembly type take-up assembly and an intelligent body fat scale, and relates to the field of electronic scales. The convenient assembly type take-up assembly comprises a shell, a rotating shaft, a winding support, a coil spring and a wire harness. The rotating shaft is installed on the shell. The winding support is provided with a first winding groove and a second winding groove. The winding support is rotatably connected with the rotating shaft. The first winding groove and the second winding groove are arranged in the extension direction of the rotating shaft. The inner end of the coil spring is connected with the rotating shaft, and the outer end of the coil spring is connected with the winding support. The wire harness is sequentially wound in the first winding groove and the second winding groove. The fixed end of the wire harness is fixed to the shell, and the movable end of the wire harness is connected with a handle. The positioning of the wire harness is realized through the two winding grooves, which effectively improves the axial folding, loosening and accumulation of the wire harness in the fixed layer, and the wire harness is not prone to interference with the shell, thereby facilitating the assembly of the shell.

Description

Technical Field

[0001] This invention relates to the field of electronic scales, and more specifically, to an easy-to-assemble cable winding assembly and an intelligent body fat scale. Background Technology

[0002] Body fat scales are popular among consumers. To improve the user experience, manufacturers usually design a handle cord retraction structure to facilitate the storage of the handle cord. At the same time, most manufacturers also use magnetic attraction to fix the handle to one side of the body fat scale.

[0003] The inventors' research revealed that existing body fat scales still have problems in terms of user experience and production assembly, mainly in the following three aspects:

[0004] I. Difficulty in Assembling the Take-Up Reel: Existing take-up structures generally consist of a spring, a reel, a bottom shell, an upper shell, and a wire harness. The wire harness has a fixed end and a movable end. The reel has two layers: a grooved layer and a fixed wire harness layer. The movable end is wound within the grooved layer of the reel, while the fixed end passes through the reel and is wound in the opposite direction into the fixed wire harness layer. The working principle is that under the action of the spring and external force, the movable end is wound and released on the reel, while the fixed end is wound several turns in the fixed wire harness layer, corresponding to the release and winding of the movable end. During assembly, due to the elasticity of the wire harness, the coils at the fixed end cannot be effectively fixed and adhered to the surface of the reel, easily causing axial folding. This increases the difficulty of subsequent assembly of the upper shell, reducing assembly efficiency and quality.

[0005] 2. Fixing the handle to the body fat scale: The magnetic method of fixing the handle to the body fat scale also has the problem of unreliability, which increases the cost; and during the assembly process, employees may easily mismatch the magnetic poles of the magnet.

[0006] Third, the cable retraction process is undamped; when the user accidentally drops the handle, the cable is quickly retracted due to the action of the spring, causing the handle to be violently impacted, resulting in a bad user experience. Summary of the Invention

[0007] The purpose of this invention is to provide an easy-to-assemble wire take-up assembly and an intelligent body fat scale, which can effectively improve the problem of axial movement and folding of the fixed wire harness layer during assembly, which makes the upper shell assembly difficult.

[0008] The embodiments of the present invention are implemented as follows:

[0009] In a first aspect, the present invention provides an easily assembled cable take-up assembly, comprising:

[0010] The device comprises a housing, a rotating shaft, a winding bracket, a coil spring, and a wire harness. The rotating shaft is mounted on the housing. The winding bracket has a first winding groove and a second winding groove. The winding bracket is rotatably engaged with the rotating shaft. The first winding groove and the second winding groove are arranged in the extending direction of the rotating shaft. The inner end of the coil spring is connected to the rotating shaft, and the outer end of the coil spring is connected to the winding bracket. The wire harness is sequentially wound in the first winding groove and the second winding groove. The fixed end of the wire harness is fixed to the housing, and the movable end of the wire harness is used to connect to a handle.

[0011] In an optional embodiment, the winding bracket includes a winding disc and a pressing disc arranged coaxially. The winding bracket is provided with an assembly hole that passes through both the winding disc and the pressing disc, and the coil spring is disposed in the assembly hole. The first winding groove is disposed on the outer peripheral surface of the winding disc, and the pressing disc and the winding disc are arranged at intervals and the second winding groove is defined between them.

[0012] In an optional embodiment, the housing includes a first half-shell and a second half-shell, the rotating shaft is mounted on the first half-shell, the first half-shell and the second half-shell are connected and together define a mounting cavity, the winding bracket is located in the mounting cavity; the first half-shell and the second half-shell cooperate to clamp the fixed end, and the movable end extends out of the mounting cavity.

[0013] In an optional embodiment, a first notch is provided on the first half-shell, and a second notch is provided on the second half-shell. The first notch and the second notch cooperate to form a clearance hole, and the wire harness passes through the clearance hole.

[0014] In an optional embodiment, the easy-to-assemble take-up assembly further includes a one-way damping component mounted on the housing. The one-way damping component is used to provide damping to the winding bracket only when the winding bracket rotates in a first rotation direction, so as to slow down the rotation speed of the winding bracket; wherein, the first rotation direction is the direction in which the wire harness unwinds.

[0015] In an optional embodiment, the unidirectional damping assembly includes a mounting shaft and a damping block. The damping block is provided with a damping surface and is rotatably engaged with the housing via the mounting shaft. The damping surface is eccentrically disposed with respect to the mounting shaft and contacts the winding bracket. When the winding bracket rotates along a first rotation direction, the pressure exerted by the damping surface on the winding bracket increases to increase friction. When the winding bracket rotates along a second rotation direction opposite to the first rotation direction, the pressure exerted by the damping surface on the winding bracket decreases to reduce friction.

[0016] In an optional embodiment, the housing is provided with a limiting structure, which is used to abut against the damping block when the winding bracket rotates along the first rotation direction and drives the damping block to rotate, so as to limit the rotation angle of the damping block.

[0017] In an optional embodiment, the damping block is provided with a clearance ramp, which is used to create a gap between the winding bracket and the winding bracket when the winding bracket rotates in the second rotation direction and drives the damping block to rotate.

[0018] Secondly, the present invention provides an intelligent body fat scale, the intelligent body fat scale comprising:

[0019] The scale body, the handle, and the easy-to-assemble cable take-up assembly described in any of the foregoing embodiments, wherein the handle is detachably connected to the scale body, the housing is installed inside the scale body, and the movable end of the cable harness is connected to the handle.

[0020] In an optional embodiment, the scale body is provided with a positioning groove, the groove wall of the positioning groove is provided with a first buckle, the handle is provided with a second buckle, the handle is embedded in the positioning groove, and the first buckle and the second buckle are engaged.

[0021] The beneficial effects of the embodiments of the present invention are:

[0022] In summary, the easy-to-assemble take-up assembly provided in this embodiment, by setting a first winding groove and a second winding groove arranged axially at intervals on the winding bracket, allows most of the wire harness corresponding to the movable end to be wound in the first winding groove, while the remaining portion corresponding to the fixed end is wound in the second winding groove. In this way, the wire harness corresponding to the upper shell, that is, the wire harness wound in the second winding groove, is limited by the second winding groove. The wire harness can be wound sequentially from the inside to the outside in the second winding groove, making it less prone to axial folding, loosening, and jerking. The wire harness has a regular structure, high stability, and is less likely to interfere with the assembly of the upper shell, thereby reducing assembly difficulty, improving assembly efficiency, and reducing processing and manufacturing costs. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the structure of the intelligent body fat scale according to an embodiment of the present invention;

[0025] Figure 2This is a schematic diagram of the wiring structure of the intelligent body fat scale according to an embodiment of the present invention;

[0026] Figure 3 This is a partially enlarged structural diagram of the smart body fat scale according to an embodiment of the present invention;

[0027] Figure 4 This is an exploded structural diagram of the smart body fat scale according to an embodiment of the present invention;

[0028] Figure 5 This is a schematic diagram of the structure of the easy-to-assemble wire take-up assembly according to an embodiment of the present invention;

[0029] Figure 6 This is a structural schematic diagram of the easily assembled wire take-up assembly according to an embodiment of the present invention from another perspective;

[0030] Figure 7 This is an exploded structural diagram of the easily assembled wire take-up assembly according to an embodiment of the present invention;

[0031] Figure 8 This is a schematic diagram of the shell structure according to an embodiment of the present invention;

[0032] Figure 9 This is a schematic diagram of the winding bracket according to an embodiment of the present invention;

[0033] Figure 10 This is a cross-sectional view of the winding bracket according to an embodiment of the present invention;

[0034] Figure 11 This is a schematic diagram of the structure of a unidirectional damping block according to an embodiment of the present invention;

[0035] Figure 12 This is a schematic diagram of the structure of a unidirectional damping block in one state according to an embodiment of the present invention;

[0036] Figure 13 This is a schematic diagram of another state of the unidirectional damping block according to an embodiment of the present invention.

[0037] icon:

[0038] 001-First rotation direction; 002-Second rotation direction; 100-Scale body; 110-Bottom shell; 120-Panel; 130-First electrode plate; 140-Battery assembly; 150-Weighing sensor assembly; 160-Storage shell; 161-Positioning groove; 162-First buckle; 200-Handle; 210-Second buckle; 220-Second electrode plate; 300-Easy-to-assemble wire winding assembly; 310-Housing shell; 311-First half shell; 3111-First slot; 3112-First notch; 3113-Mounting hole; 312-Second half shell; 3121-Second slot; 3122-Second notch; 313-Wire locking hole; 314-Allowing hole; 315-Protective cover; 320-Shaft; 330-Winding bracket; 331-Winding reel; 3311-First inner cylinder ; 3312-Second inner cylinder; 3313-Outer cylinder; 3314-First disc; 3315-Second disc; 3316-Connecting hole; 3317-Guide groove; 33171-First end; 33172-Second end; 3318-Connecting groove; 332-Pressing disc; 333-First winding groove; 334-Second winding groove; 340-Coil spring; 350-Wire harness; 351-Fixed end; 352-Modible end; 353-First section; 354-Second section; 360-One-way damping assembly; 361-Mounting shaft; 362-Damping block; 3621-Body body; 3622-Protrusion; 3623-First side surface; 3624-Second side surface; 3625-Third side surface; 3626-Fourth side surface; 3627-Rotating hole; 3628-Avoidance slope; 3629-Blocking surface. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0040] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0041] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0042] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. In addition, the terms "first," "second," "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0043] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0044] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0045] Please combine Figures 1-13 This embodiment provides an intelligent body fat scale. By improving the structure of the winding bracket 330, the stability of the two layers of wire harness 350 wound on the winding bracket 330 can be guaranteed. It is not easy to cause axial folding, loosening and sloshing, which facilitates the assembly of the housing 310 and the winding bracket 330, reduces the assembly difficulty and improves the assembly efficiency.

[0046] Please combine Figures 1-4 In this embodiment, the intelligent body fat scale includes a scale body 100, a handle 200, and an easy-to-assemble cable retraction assembly 300. The handle 200 is connected to the scale body 100 and can be positioned on or removed from the scale body 100. The cable harness 350 of the easy-to-assemble cable retraction assembly 300 is connected to the handle 200. When the handle 200 is removed from the scale body 100, force can be applied to the handle 200 to lengthen the cable harness 350.

[0047] The following provides an example illustrating the detailed structure of the intelligent body fat scale provided in the embodiments of this application.

[0048] Please combine Figure 4In this embodiment, optionally, the scale body 100 includes a bottom shell 110, a panel 120, a first electrode plate 130, a battery assembly 140, and a load cell assembly 150. The bottom shell 110 and the panel 120 are connected, and together they define a cavity for housing the battery assembly 140 and the cable take-up assembly, etc. The first electrode plate 130 is attached to the top surface of the panel 120. The battery assembly 140 is fixed to the bottom shell 110 by screws or other fasteners. The load cell is mounted on the bottom shell 110 and electrically connected to the battery assembly 140. The panel 120 is in contact with the load cell. The bottom shell 110 can be a plastic shell, and the panel 120 can be a glass plate. The number of load cells can be, but is not limited to, four. The bottom shell 110 has a protruding arc-shaped storage plate. The concave arc surface of the storage plate forms a positioning groove 161. Three first latches 162 are provided on the groove wall of the positioning groove 161, two of which are close to the bottom shell 110 and the other is away from the bottom shell 110. It should be understood that in other embodiments, the number of first latches 162 is not limited to three.

[0049] It should be understood that the bottom shell 110 and the storage shell 160 can be molded as a single piece.

[0050] Please combine Figure 3 and Figure 4 In this embodiment, optionally, the handle 200 is provided with a second latch 210, the number of which is equal to the number of the first latches 162. The handle 200 can be latched into the positioning groove 161, and the three second latches 210 on the handle 200 can respectively engage with the three first latches 162 in the positioning groove 161, thus achieving positioning of the handle 200 and the scale body 100. Using a latch structure for positioning ensures that the handle 200 is not easily detached from the scale body 100 after positioning, resulting in a secure and stable position. Furthermore, it avoids the problem of incorrect magnetic pole alignment during assembly that occurs with magnetic positioning methods in existing technologies. Simultaneously, a second electrode plate 220 is attached to the handle 200.

[0051] Please combine Figures 5-7 , Figures 11-13In this embodiment, the optional, easily assembled take-up assembly 300 includes a housing 310, a rotating shaft 320, a winding bracket 330, a coil spring 340, a wire harness 350, and a one-way damping assembly 360. The rotating shaft 320 is mounted on the housing 310. The winding bracket 330 is provided with a first winding groove 333 and a second winding groove 334. The winding bracket 330 and the rotating shaft 320 are rotatably coupled. The first winding groove 333 and the second winding groove 334 are arranged in the extending direction of the rotating shaft 320. The inner end of the coil spring 340 is connected to the rotating shaft 320, and the outer end of the coil spring 340 is connected to the winding bracket 330. The wire harness 350 is sequentially wound in the first winding groove 333 and the second winding groove 334. The fixed end 351 of the wire harness 350 is fixed to the housing 310, and the movable end 352 of the wire harness 350 is connected to the handle 200. A one-way damping assembly 360 is mounted on the housing 310. The one-way damping assembly 360 is used to provide damping for the winding bracket 330 only when the winding bracket 330 rotates in the first rotation direction 001, so as to slow down the rotation speed of the winding bracket 330; wherein, the first rotation direction 001 is the direction in which the wire harness 350 unwinds.

[0052] Please combine Figure 8 Optionally, the housing 310 is configured as a split structure, comprising a first half-shell 311 and a second half-shell 312. The first half-shell 311 can be referred to as the lower shell, and the second half-shell 312 can be referred to as the upper shell. The first half-shell 311 and the second half-shell 312 are detachably connected by fasteners such as screws. The edge of the first half-shell 311 is provided with a first slot 3111 and a first notch 3112, and the edge of the second half-shell 312 is provided with a second slot 3121 and a second notch 3122. After the first half-shell 311 and the second half-shell 312 are connected, they together define the mounting cavity. At the same time, the first slot 3111 and the second slot 3121 cooperate to form a wire-holding hole 313 for the fixed end 351 of the positioning wire harness 350, and the first notch 3112 and the second notch 3122 cooperate to form a clearance hole 314 for the movable end 352 of the wire harness 350 to pass through.

[0053] Optionally, both the first half-shell 311 and the second half-shell 312 are circular shells, and the rotating shaft 320 is fixed at the middle position of the first half-shell 311. The rotating shaft 320 is coaxially arranged with the first half-shell 311 and the second half-shell 312. It should be understood that the rotating shaft 320 can be integrally formed with the first half-shell 311, resulting in a robust and reliable structure that is not easily damaged and has a long service life.

[0054] Furthermore, the first half-shell 311 is provided with a mounting hole 3113, which is located near the edge of the first half-shell 311. That is, the distance between the mounting hole 3113 and the edge of the first half-shell 311 is less than the distance between the mounting hole 3113 and the center of the first half-shell 311. A protective cover 315 is provided on the outer side of the first half-shell 311 away from the second half-shell 312, and the protective cover 315 covers the end of the mounting hole 3113 away from the second half-shell 312. The mounting hole 3113 and the protective cover 315 cooperate to install the unidirectional damping assembly 360.

[0055] Please combine Figures 9-10In this embodiment, optionally, the winding bracket 330 includes a winding disc 331 and a pressing disc 332 coaxially arranged. The winding bracket 330 is provided with an assembly hole that passes through both the winding disc 331 and the pressing disc 332. A first winding groove 333 is provided on the outer peripheral surface of the winding disc 331. The pressing disc 332 and the winding disc 331 are arranged at intervals, and a second winding groove 334 is defined between them. Specifically, the winding disc 331 includes a first inner cylinder 3311, a second inner cylinder 3312, an outer cylinder 3313, a first disc body 3314, and a second disc body 3315. The first disc body 3314 and the second disc body 3315 are both sleeved on the outside of the first inner cylinder 3311 and are coaxially arranged. The first disc body 3314, the first inner cylinder 3311, and the second disc body 3315 define the first winding groove 333, and a connecting hole 3316 is provided on the cylinder wall of the first inner cylinder 3311. The second inner cylinder 3312 is fixedly connected to the second disc body 3315 and protrudes from the disc surface of the second disc body 3315 away from the first disc body 3314. The cylinder cavity of the second inner cylinder 3312 is connected to the cylinder cavity of the first inner cylinder 3311 and forms an assembly hole. The first disc body 3314 is opposite to the first half-shell 311, and the second disc body 3315 is opposite to the second half-shell 312. The rotating shaft 320 extends into the first inner cylinder 3311, and the coil spring 340 is installed in the first inner cylinder 3311. The outer cylinder 3313 is sleeved on the outside of the second inner cylinder 3312. The outer cylinder 3313 and the second inner cylinder 3312 are coaxially arranged. A guide groove 3317 is defined between the outer cylinder 3313 and the second inner cylinder 3312. The guide groove 3317 extends circumferentially in the second inner cylinder 3312 and has a first end 33171 and a second end 33172 in its extending direction. The second disc body 3315 is provided with a connecting groove 3318. One end of the connecting groove 3318 is connected to the first end 33171 of the guide groove 3317, and the other end is connected to the connecting hole 3316. The pressure plate 332 is fixed to the ends of the second inner cylinder 3312 and the outer cylinder 3313 away from the second disc body 3315. The pressure plate 332, the outer cylinder 3313, and the second disc body 3315 together define the second winding groove 334. The first end 33171 and the second end 33172 of the guide groove are both connected to the second winding groove 334. When the wire harness 350 is wound, the wire harness 350 is housed in the guide groove, which divides the wire harness 350 into two segments. The length of the first segment 353, which corresponds to the fixed end 351, is approximately 1 / 4 of the total length of the wire harness 350. The length of the second segment 354, which corresponds to the movable end 352, is approximately 3 / 4 of the total length of the wire harness 350. The end of the first segment 353, i.e. the fixed end 351, passes through the second end 33172 and is wound in the second winding groove 334. The end of the second segment 354, i.e. the movable end 352, passes through the first end 33171, enters the connecting groove 3318, and then enters the first winding groove 333 through the connecting hole 3316 and is wound in the first winding groove 333. The winding directions of the first segment 353 and the second segment 354 are the same.Since the wire harness 350 is wound in the first winding groove 333 and the second winding groove 334 respectively, the wire harness 350 is limited by the first winding groove 333 and the second winding groove 334, and its position is stable. It is not easy for axial folding, jerking or loosening to occur. When the winding bracket 330 and the wire harness 350 are assembled into the housing 310, the wire harness 350 will not interfere with the second half-shell 312, which makes it easy for the second half-shell 312 to be fixed on the first half-shell 311.

[0056] It should be noted that the winding bracket 330 is designed as an integrated structure, for example, it can be molded in one piece, which is convenient to process, suitable for mass production, reduces processing difficulty, and improves the overall structural strength and service life.

[0057] Please combine Figures 11-13In this embodiment, optionally, the unidirectional damping assembly 360 includes a mounting shaft 361 and a damping block 362. The mounting shaft 361 is fixed on the protective cover 315, and the axis of the mounting shaft 361 extends radially along the first half-shell 311, that is, the mounting shaft 361 is arranged perpendicular to the rotating shaft 320. The damping block 362 includes a one-piece body 3621 and a protrusion 3622. The body 3621 is cuboid in shape and has a first side 3623, a second side 3624, a third side 3625, and a fourth side 3626 connected end-to-end. The first side 3623 and the third side 3625 are opposite each other, and the second side 3624 and the fourth side 3626 are opposite each other. A chamfer is provided at the connection between the second side 3624 and the third side 3625. In other words, the first side 3623 and the third side 3625 are connected by a relief slope 3628. The relief slope 3628 can be an arc surface or a plane, and it has an angle with both the first side 3623 and the third side 3625. The second side 3624 is a damping surface; for example, the second side 3624 can be a rough surface. The protrusion 3622 protrudes from the first side surface 3623. The side of the protrusion 3622 near the second side surface 3624 has a gap with the second side surface 3624. The side of the protrusion 3622 near the second side surface 3624 can be called the blocking surface 3629. The main body 3621 is provided with a rotating hole 3627, which is a circular hole. The distance between the axis of the rotating hole 3627 and the first side surface 3623 is L1, and the distance between the axis of the rotating hole 3627 and the third side surface 3625 is L2, where L2 is greater than L2. Furthermore, the distance between the axis of the rotating hole 3627 and the second side surface 3624 is greater than the distance between the axis of the rotating hole 3627 and the fourth side surface 3626. Thus, when the damping block 362 is rotatably connected to the rotating shaft, the damping block 362 and the rotating shaft are eccentrically set. The second side surface 3624 of the damping block 362 contacts the plate surface of the first disc 3314 away from the second disc 3315. Under the action of gravity, the side of the damping block 362 corresponding to the first side surface 3623 tends to rotate towards the first disc 3314, thereby ensuring that the second side surface 3624 is always in contact with the first disc 3314. Simultaneously, the rotational tendency of the damping block 362 corresponds to the rotational direction of the winding bracket 330. That is, when the winding bracket 330 rotates in the first rotational direction 001, the wire harness 350 will be wound around the winding bracket 330. Under the action of the friction between the damping surface and the first disc 3314, it tends to continuously press the damping surface against the first disc 3314. Figure 12 and Figure 13As shown in the diagram, the damping surface tends to rotate clockwise, increasing the force of the damping surface pressing against the first disc 3314, thus increasing friction and decreasing the rotational speed of the winding bracket 330. When the wire harness 350 is pulled, causing the winding bracket 330 to rotate in the second rotation direction 002, the wire harness 350 unwinds and lengthens. The damping block 362 then tends to rotate counterclockwise, causing the damping surface to move away from the first disc 3314, reducing friction on the first disc 3314 and thus not affecting the wire harness 350 pulling-out operation. Meanwhile, due to the design of the avoidance ramp 3628, when the damping block 362 rotates counterclockwise under the drive of the first disc 3314, the avoidance ramp 3628 is less likely to contact the first disc 3314, reducing the contact area between the damping block 362 and the first disc 3314, thereby reducing the resistance exerted by the damping block 362 on the first disc 3314, making it easier to pull out the wire harness 350. In other words, through the structural design of the unidirectional damping block 362, when the winding bracket 330 retracts the wire harness 350 under the action of the coil spring 340, the rotation speed of the winding bracket 330 is slowed down, the generated torque is small, the force exerted by the wire harness 350 on the user's hand is small, and the user experience is better. The first rotation direction 001 is opposite to the second rotation direction 002.

[0058] Meanwhile, after the damping block 362 is installed in the mounting hole 3113, the protrusion 3622 is located on the side of the limiting structure away from the second half-shell 312, and the blocking surface 3629 has a gap with the limiting structure. When the winding bracket 330 rotates along the first rotation direction 001 to retract the wire harness 350, the damping block 362 will rotate in the direction of pressing the first disc 3314 under the drive of the first disc 3314, and the blocking surface 3629 can abut against the limiting structure, thereby limiting the rotation angle of the damping block 362 in the rotation direction of pressing the first disc 3314, avoiding the damping block 362 and the first disc 3314 from jamming, and improving safety.

[0059] The working principle of the intelligent body fat scale provided in this embodiment is as follows:

[0060] In its initial state, the handle 200 is embedded in the positioning groove 161. The handle 200 is positioned by the cooperation of the first latch 162 and the second latch 210, ensuring a secure and reliable position that is not easily released automatically. When needed, the handle 200 is removed from the positioning groove 161, and force is applied to the handle 200, causing it to drive the winding bracket 330 to rotate in the second rotation direction 002 via the wire harness 350. The damping block 362 can rotate counterclockwise, thereby reducing the resistance to the first disc 3314, which in turn reduces the damping of the winding bracket 330. When the wire harness 350 is pulled out, it is basically unaffected by the damping block 362, making the pull-out operation quick and easy. When it is necessary to retract the wire harness 350, the user removes the external force applied to the handle 200. Under the action of the coil spring 340, the winding bracket 330 rotates along the first rotation direction 001, and the wire harness 350 automatically winds around the first winding groove 333 and the second winding groove 334. Under the action of the damping block 362, the damping block 362 always maintains close contact with the first disc 3314, providing a certain frictional force to resist the rotation of the winding bracket 330 along the first rotation direction 001, so that the winding bracket 330 rotates at a low speed during the process of retracting the wire harness 350, thus improving the user experience.

[0061] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A modular take-up assembly for easy assembly, characterized in that, include: The device comprises a housing, a rotating shaft, a winding bracket, a coil spring, and a wire harness. The rotating shaft is mounted on the housing. The winding bracket has a first winding groove and a second winding groove. The winding bracket is rotatably engaged with the rotating shaft. The first winding groove and the second winding groove are arranged in the extending direction of the rotating shaft. The inner end of the coil spring is connected to the rotating shaft, and the outer end of the coil spring is connected to the winding bracket. The wire harness is sequentially wound in the first winding groove and the second winding groove. The fixed end of the wire harness is fixed to the housing, and the movable end of the wire harness is used to connect to a handle. The winding bracket includes a winding disc and a pressing disc arranged coaxially. The winding bracket is provided with an assembly hole that passes through both the winding disc and the pressing disc. The coil spring is disposed in the assembly hole. The first winding groove is disposed on the outer peripheral surface of the winding disc. The pressing disc and the winding disc are arranged at intervals and the second winding groove is defined between them. The winding disc includes a first disc body and a second disc body. The easy-to-assemble take-up assembly further includes a one-way damping component, which is mounted on the housing. The one-way damping component is used to provide damping to the winding bracket only when the winding bracket rotates in a first rotation direction, so as to slow down the rotation speed of the winding bracket; wherein, the first rotation direction is the direction of wire harness winding. The unidirectional damping assembly includes a mounting shaft and a damping block. The damping block is provided with a damping surface and is rotatably engaged with the housing via the mounting shaft. The damping surface is eccentrically positioned relative to the mounting shaft and contacts the winding bracket. When the winding bracket rotates along a first rotation direction, the wire harness automatically winds into the first and second winding slots. The damping block remains in close contact with the first disc, and the pressure exerted by the damping surface on the winding bracket increases to increase friction. When the winding bracket rotates along a second rotation direction opposite to the first rotation direction, the pressure exerted by the damping surface on the winding bracket decreases to reduce friction. The housing is provided with a limiting structure, which is used to abut against the damping block when the winding bracket rotates along the first rotation direction and drives the damping block to rotate, so as to limit the rotation angle of the damping block.

2. The easily assembled take-up assembly according to claim 1, characterized in that: The housing includes a first half-shell and a second half-shell. The rotating shaft is mounted on the first half-shell. The first half-shell and the second half-shell are connected and together define a mounting cavity. The winding bracket is located in the mounting cavity. The first half-shell and the second half-shell cooperate to clamp the fixed end, and the movable end extends out of the mounting cavity.

3. The easily assembled take-up assembly according to claim 2, characterized in that: The first half-shell has a first notch, and the second half-shell has a second notch. The first notch and the second notch cooperate to form a clearance hole, and the wire harness passes through the clearance hole.

4. The easily assembled take-up assembly according to claim 1, characterized in that: The damping block is provided with a clearance slope, which is used to create a gap between itself and the winding bracket when the winding bracket rotates along the second rotation direction and drives the damping block to rotate.

5. A smart body fat scale, characterized in that, The intelligent body fat scale includes: The scale body, the handle, and the easy-to-assemble cable take-up assembly according to any one of claims 1-4, wherein the handle is detachably connected to the scale body, the housing is installed inside the scale body, and the movable end of the cable harness is connected to the handle.

6. The intelligent body fat scale according to claim 5, characterized in that: The scale body is provided with a positioning groove, the groove wall is provided with a first buckle, the handle is provided with a second buckle, the handle is embedded in the positioning groove, and the first buckle and the second buckle are engaged.

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