CN215839042U - Take-up box and human body measuring device - Google Patents

Abstract

The embodiment of the application provides a take-up box, including pedestal, take-up reel and ball, the mounting surface of pedestal is equipped with the recess, and the take-up reel rotates to set up in the mounting surface, and one side of the orientation mounting surface of take-up reel is provided with the track, and the track is provided with the locking position, and the ball sets up in the recess and imbeds in the track, and when the take-up reel rotated under the exogenic action, the ball rolled along the track to selectively get into the locking position. When the user is when tensile cable, the relative base of take-up reel rotates the length in order to release the cable, and at this in-process, the ball rolls for the track and less with the resistance between the track for the take-up reel is difficult to be blocked or the card is died rotating the in-process, and the user can be more smooth and easy at the in-process of tensile cable, rolls to the locking position when the ball, and the locking position can carry out the auto-lock of locking in order to realize the take-up reel to the ball, in order to keep being stretched the length of back cable. In addition, a body measurement device is also provided.

Description

Take-up box and human body measuring device

Technical Field

The embodiment of the application relates to the technical field of human health detection, in particular to a take-up box and a human body measuring device.

Background

Currently, a human body measuring device is widely used in the field of health detection, and the human body measuring device includes a human body composition analyzer and the like. The human body composition analyzer generally detects human body composition parameters by measuring impedance, potential, and the like between hands and feet of a human body, and analyzes a health state of the human body through the parameters. The current body measuring device generally comprises two measuring modes of four electrodes and eight electrodes, and when the eight-electrode measuring mode is adopted to measure the human body, the handle and the base of the body measuring device are required to be used at the same time. At present most anthropometric survey device's handle and base are connected through the cable, and the length of cable is the fixed length generally, and the wire rod exposes outside, and cable length can't adjust according to surveyed personnel's demand, can't receive the line automatically moreover, twine together with other article or self easily. However, a few of human body measuring devices can realize the function of automatic wire winding through the wire winding disc, but the wire winding disc is easy to clamp or block in the rotating process.

SUMMERY OF THE UTILITY MODEL

In view of the above problems, the present application provides a wire rewinding box and a human body measuring device to solve the above problems in the prior art.

In a first aspect, an embodiment of the present application provides a take-up box, which includes a seat body, a take-up reel and balls, wherein the seat body has a mounting surface, the mounting surface is provided with a groove, the take-up reel is disposed on the mounting surface, and a rail is disposed on one side of the take-up reel facing the mounting surface and provided with a locking position; the ball is arranged in the groove, and at least part of the ball protrudes out of the mounting surface and is embedded into the track; when the take-up reel rotates under the action of external force, the balls roll along the tracks and selectively enter the locking positions.

In a second aspect, an embodiment of the present application further provides a human body measuring device, which includes a base, a handle, the above-mentioned wire rewinding box, a cable, and an impedance measuring circuit, wherein the base is provided with at least one first electrode plate, the handle is provided with at least one second electrode plate, the cable is wound on a wire rewinding disc of the wire rewinding box, the impedance measuring circuit is arranged on the base, the cable is electrically connected to the second electrode plate and the impedance measuring circuit, and the impedance measuring circuit is electrically connected to the first electrode plate, or the impedance measuring circuit is arranged on the handle; the cable is electrically connected with the first electrode plate and the impedance measuring circuit, and the impedance measuring circuit is electrically connected with the second electrode plate.

The application provides a take-up reel, when the user is when tensile cable, the relative base of take-up reel rotates the length in order to release the cable, and at this in-process, the ball rolls for the track and less with the resistance between the track for the take-up reel is difficult to be blocked tightly or the card is died rotating the in-process, and the user can be more smooth and easy at the in-process of tensile cable. When the ball rolls to the locking position, the locking position provides preset rolling resistance for the ball, wherein when the pulling force of the cable acting on the take-up reel is smaller than the rolling resistance, the locking position can lock the ball to realize the self-locking of the take-up reel so as to keep the length of the stretched cable. When the take-up reel is applied to the human body measuring device, the cable can be stretched to different lengths so as to meet the use requirements of different users.

These and other aspects of the present application will be more readily apparent from the following description of the embodiments.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings used in the description of the embodiments will be briefly introduced below, and it is apparent that the drawings in the following description are only some embodiments, not all embodiments, of the present application. All other embodiments and drawings obtained by a person skilled in the art based on the embodiments of the present application without inventive step are within the scope of the present application.

Fig. 1 is a schematic structural view of a wire rewinding box according to an embodiment of the present application;

fig. 2 is a schematic structural view of another wire rewinding box according to an embodiment of the present application;

fig. 3 is a schematic structural view of a take-up reel and a reset member of a take-up box according to an embodiment of the present disclosure in an assembled state;

FIG. 4 is a schematic structural view illustrating a cable of a take-up box wound on a take-up reel according to an embodiment of the present disclosure;

FIG. 5 is a schematic structural view illustrating another cable winding structure of a take-up reel of a take-up box according to an embodiment of the present disclosure;

fig. 6 is a top view of a take-up reel of the take-up box according to an embodiment of the present disclosure.

Fig. 7 is a schematic perspective view of a take-up reel of the take-up box according to an embodiment of the present application.

Fig. 8 is a partially enlarged schematic view of the locking rail of fig. 7.

Fig. 9 is a schematic structural diagram of a body measurement device according to an embodiment of the present application.

Detailed Description

In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

The following provides a wire collecting box and a body measurement device according to embodiments of the present application.

Referring to fig. 1, an embodiment of the present invention provides a wire rewinding box 100, where the wire rewinding box 100 includes a base 110, a wire rewinding disc 120, and balls 130. The holder body 110 has a mounting surface 111, and the mounting surface 111 is provided with a groove 1111. The take-up reel 120 is disposed on the mounting surface 111, and a rail 121 is disposed on a side of the take-up reel 120 facing the mounting surface 111, and the rail 121 is provided with a locking position 122. The ball 130 is disposed in the groove 1111, and at least a portion of the ball 130 protrudes from the mounting surface 111 and is embedded in the track 121.

When the take-up reel 120 is rotated by an external force, the balls 130 roll along the rails 121 and selectively enter the locking position 122. The detent 122 is used to provide a predetermined rolling resistance to the ball 130.

The term "predetermined rolling resistance" refers to a certain amount of resistance provided by the locking position 122 to the ball 130 when the ball 130 is in the locking position 122; when the external force acting on the take-up reel 120 is smaller than the resistance force, the locking position 122 can prevent the ball 130 from continuing to roll, so that the ball 130 is locked at the locking position 122; when the external force applied to the take-up reel 120 is greater than or equal to the resistance force, the ball 130 can pass over the locking position 122 and continue to roll along the rail 121.

The term "selectively" means that when the take-up reel 120 is rotated relative to the holder body 110 by an external force, the balls 130 on the rails 121 can be locked in the locking positions 122 or pass the locking positions 122 and continue to roll along the rails 121 according to the magnitude relationship between the external force and the predetermined rolling resistance.

The "external force" may be an external pulling force applied to the cable wound around the take-up reel 120 by a user, or may be a restoring force generated to the take-up reel 120 by the restoring member of the take-up reel box 100. The balls 130 may enter the track 121 from the detents 122 when the external pulling force on the cable is greater than a predetermined rolling resistance. Further, when the external pulling force disappears or the pulling force is smaller than the predetermined rolling resistance of the locking position, if the ball 130 is already in the locking position 122, the ball 130 may be held in the locking position 122 by the predetermined rolling resistance. If the ball 130 is not located in the locking position 122, the take-up reel 120 rotates under the restoring force of the restoring member, the ball 130 can enter the locking position 122 along the track 121, and the ball 130 is retained in the locking position 122 under the predetermined rolling resistance.

In this embodiment, the cable is wound around the take-up reel 120. When the user stretches the cable, the take-up reel 120 rotates relative to the holder body 110 to release the cable at least partially wound on the take-up reel 120. In this process, the ball 130 rolls with a small resistance against the rail 121, and the ball 130 is not easily caught or deadened during the rolling process, so that the user can more smoothly stretch the cable. When the balls 130 roll to the detent 122, the detent 122 can provide a predetermined rolling resistance to the balls 130. When the pulling force of the cable acting on the take-up reel 120 by the user disappears or the pulling force is smaller than the preset rolling resistance of the locking position 122, the ball 130 is locked at the locking position 122 under the action of the preset rolling resistance, so that the self-locking of the take-up reel 120 is realized, and the length of the stretched cable is maintained. When the pulling force of the cable applied to the take-up reel 120 by the user is greater than or equal to the predetermined rolling resistance of the locking position 122, the ball 130 may pass the locking position 122 and continue to roll along the rail 121.

In some embodiments, as shown in fig. 2, the mounting surface 111 is provided with a rotating post 1112, and the take-up reel 120 can rotate around the rotating post 1112. The groove 1111 may be concavely formed by the mounting surface 111. The groove 1111 includes but is not limited to a strip groove, and the embodiment takes the groove 1111 as the strip groove for explanation; the strip groove extends substantially in the radial direction of the rotor 1112. The recess depth of the recess 1111 is smaller than the outer diameter of the ball 130, when the ball 130 is disposed in the recess 1111, the ball 130 may partially protrude from the mounting surface 111, and the structure of the ball 130 protruding from the mounting surface 111 may be embedded in the track 121 of the take-up reel 120. The balls 130 can move in the extending direction of the grooves 1111.

In some embodiments, as shown in fig. 3, take-up reel 120 includes, but is not limited to, a circular housing-like structure. The take-up reel 120 may include a bottom plate 123, an outer plate 124, and an inner plate 125. The base plate 123 may be, but is not limited to, a circular plate-like structure, and the base plate 123 includes a first surface 1231 and a second surface 1232 facing away from each other, and the second surface 1232 faces the mounting surface 111. Inner plate 125 is disposed on first surface 1231, outer plate 124 is disposed around inner plate 125 and close to the edge of first surface 1231, and a storage space 1251 for storing cables is formed between outer plate 124 and inner plate 125. The bottom plate 123 has a rotating shaft hole 1233 penetrating the first surface 1231 and the second surface 1232. The rail 121 is disposed on the second surface 1232. When the take-up reel 120 is installed on the seat body 110, the rotating post 1112 is inserted into the rotating shaft hole 1233, and the take-up reel 120 can rotate around the rotating post 1112.

As an example, the outer panel 124 can include a first side panel 1241 and a second side panel 1242, the first side panel 1241 and the second side panel 1242 being disposed around the rotation post 1112, and two gaps 1243 being formed between the first side panel 1241 and the second side panel 1242. The inner side plate 125 is located in an area enclosed by the first side plate 1241 and the second side plate 1242, and forms a receiving space 1251 with the first side plate 1241. Illustratively, the first side plate 1241, the second side plate 1242, and the inner side plate 125 may each be substantially an arc plate-shaped structure. First side plate 1241 and second side plate 1242 may be spaced around the rotation post 1112, and both may be located substantially on the same circumference, and inner side plate 125 may also be located around the rotation post 1112 and adjacent to first side plate 1241, wherein a receiving space 1251 is defined between inner side plate 125 and first side plate 1241.

In some embodiments, as shown in fig. 4, the take-up cassette 100 may further include a cable 141; the cable 141 may be made of a conductive material for electrical connection; in addition, the cable 141 may be made of a highly elastic material, so that the cable 141 has good flexibility and is not easily broken. The cross section of the cable 141 may be circular, rectangular, oval or other shapes, which may be specifically adjusted according to actual requirements, and this is not specifically limited in this embodiment of the application. When the take-up reel 120 rotates in the first direction, the cable 141 is gradually released, and the free length of the cable 141 is gradually increased; when the take-up reel 120 rotates in the second direction, the cable 141 is gradually wound around the take-up reel 120, and the free length of the cable 141 is gradually shortened. The free length is the length of the cable 141 that is not wound around the take-up reel 120; when the take-up box 100 rotates in the first direction, the cable 141 wound on the take-up reel 120 is gradually released, wherein the free length of the cable 141 is gradually increased.

Optionally, two ends of the cable 141 respectively extend out through different gaps 1243 and wind around the outer periphery of the outer panel 124 in opposite directions, so that when the take-up box 100 rotates in the first direction/the second direction, the two ends of the cable 141 are released/wound at the same time, the releasing/winding speed of the cable 141 can be increased, and the use efficiency can be improved. Alternatively, one end of the cable 141 may be fixed to the first side plate 1241, and the other end may continuously surround the entire outer periphery of the outer side plate 124, and may form a plurality of turns around the outer side plate 124, when the take-up box 100 rotates in the first direction/the second direction, the free end of the cable 141 is released/wound, so as to achieve the pulling out or the receiving of the cable 141, and the other end is fixed to the first side wall 1241, so that the cable 141 is wound on the outer side plate 124 more stably.

The first direction in the above and the following text may be a clockwise direction and the second direction may be a counter-clockwise direction. In some embodiments, the first direction may be a counterclockwise direction and the second direction may be a clockwise direction. In the embodiments of the present application, the first direction is a counterclockwise direction, and the second direction is a clockwise direction.

In some embodiments, as shown in fig. 5, the outer side plate 124 may also only include a first side plate 1241, wherein the first side plate 1241 may be an annular structure, the first side plate 1241 is disposed on the first surface 1231, the first side plate 1241 is disposed around the rotation post 1112, the first side plate 1241 may have two notches 1244, the notches 1244 penetrate through an inner side wall and an outer side wall of the first side plate 1241, and two ends of the cable 141 may respectively extend through different notches 1244 and wind around an outer periphery of the first side plate 1241 in opposite directions.

Referring to fig. 3 again, in the present embodiment, the take-up box 100 further includes a restoring member 150 for rotating the take-up reel 120, a first end of the restoring member 150 is fixed to the rotating post 1112, a second end of the restoring member 150 is fixed to the take-up reel 120, and specifically, the second end of the restoring member 150 may be connected to the outer plate 124.

When the cable wound around the take-up reel 120 is stretched, the take-up reel 120 rotates in a first direction, and the reset member 150 is continuously stretched to generate elastic deformation to a certain degree in the rotating process; when the force acting on the cable is removed, the take-up reel 120 is rotated in the reverse direction by the restoring force of the restoring member 150 to rotate, and the stretched cable is wound on the take-up reel 120 again. When the reset member 150 is restored to the initial state, the winding disc 120 rotates by substantially the same stroke as when being stretched, so that the cable is rewound to the unstretched state again.

As an example, the restoring member 150 may include first and second connection portions 151 and 152, and an elastic coil 153. The reset member 150 may be an elastic steel ring, the elastic rolling ring 153 is disposed around the rotation shaft hole 1233 for at least one circle, the first connecting portion 151 and the second connecting portion 152 are respectively connected to two ends of the elastic rolling ring 153, the first connecting portion 151 is located inside the elastic rolling ring 153, the second connecting portion 152 is located outside the elastic rolling ring 153, one end of the first connecting portion 151, which is far away from the elastic rolling ring 153, is fixed to the rotation column 1112, and one end of the second connecting portion 152, which is far away from the elastic rolling ring 153, is fixed to the outer panel 124. The second connecting portion 152 may be connected to the first side plate 1241. When the take-up reel 120 rotates in the first direction, the elastic coil 153 is continuously tightened, so that the elastic coil 153 can provide a restoring force to the take-up reel 120 opposite to the rotation direction of the take-up reel 120; when the pulling force acting on the cable is removed, the take-up reel 120 is rotated by the restoring force of the elastic winding ring 153. In an embodiment, the first connecting portion 151, the second connecting portion 152 and the elastic rolling ring 153 may be an integrally formed structure, wherein one end of the second connecting portion 152 may be bent for multiple times to form a U-shaped structure, so that the second connecting portion 152 can be directly sleeved on the outer side of the outer panel 124. The first connection portion 151 may have a hook-shaped structure to hook on the outer circumference of the rotation post 1112.

When the take-up reel 120 rotates along the first direction, the take-up reel 120 drives the second connecting portion 152 to move, and the second connecting portion 152 tensions the entire elastic coil 153 in the moving process, so that the elastic coil 153 generates a reverse acting force on the take-up reel 120. The elastic coil 153 is disposed around the rotation shaft hole 1233 for at least one circle. By adopting the elastic rolling ring 153, the space of the take-up reel 120 can be fully utilized, meanwhile, when the cable is pulled out, the elastic rolling ring 153 is actually tightened, the elastic rolling ring 153 is rolled and contracted on the rotating post 1112, and because the thickness of the elastic rolling ring 153 is very thin, the contracted deformation amount is small, and the restoring force generated by the elastic rolling ring 153 is small in the process of pulling the cable by a user, the user basically cannot feel the change of the force when pulling out the cable; during manufacturing, the user can leave a margin for the length of the elastic coil 153 according to actual requirements, so that the elastic coil 153 does not fail due to tension in the stretching and releasing process of the whole cable.

In some embodiments, as shown in fig. 6 and 7, track 121 may include a first track 1211, a second track 1212, and one communication track 1213. The first rail 1211 is disposed around the rotation axis of the take-up reel 120; the second rail 1212 is disposed outside the first rail 1211 and surrounds the rotation axis of the take-up reel 120; communication track 1213 may extend generally tangential to first track 1211 and communicate with first track 1211 and second track 1212. The locking bit 122 may be disposed on the second rail 1212. When the cable wound on the take-up reel 120 is in an unstretched state, the ball 130 may be located in the first track 1211, and at this time, the free length of the cable is the shortest. When the cable is pulled by the user, the take-up reel 120 rotates in the first direction, the ball 130 rolls in the second direction relative to the first track 1211 to the communicating track 1213 and can roll from the communicating track 1213 to the second track 1212, and the length of the cable wound on the take-up reel 120 is continuously released; as the cable continues to be stretched, the ball 130 may roll relative to the second track 1212 all the way in the second direction, thereby causing the length of the cable to be continuously released. When the external pulling force acting on the cable is eliminated, the take-up reel 120 can rotate in the second direction under the action of the reset element 150, so that the balls 130 roll to the locking position 122 in the first direction and are locked by the locking position 122 so as not to continue to roll, and the take-up reel 120 maintains a self-locking state to maintain the free length of the stretched cable. The position of the locking position 122 on the second rail 1212 can be determined by calculating a predetermined length of the cable to be stretched in advance, so that after the cable is stretched to the predetermined length, the ball 130 can be locked at the corresponding position to maintain the predetermined length of the stretched cable.

In addition, in some embodiments, the locking positions 122 may be disposed at a plurality of predetermined positions of the second rail 1212, so that the balls 130 can be locked on the corresponding locking positions 122 after the cable is stretched to different predetermined lengths.

In some embodiments, as shown in fig. 6 and 7, the second track 1212 may include an annular track 1215 and a locking track 1214, the annular track 1215 being disposed about the axis of rotation of the take-up reel 120. Specifically, the ring track 1215 can generally define an annular configuration about the axis of rotation of the take-up spool 120, a lock track 1214 is coupled between the ring track 1215 and the first track 1211, and a lock detent 122 is disposed on the lock track 1214. As the cable is continually stretched, the balls 130 roll in a second direction relative to the circular track 1215 so that the cable is continually released; when the pulling force applied to the wire is removed, the take-up reel 120 is reset by the restoring force of the reset member 150, and the balls 130 can roll in the first direction from the ring rail 1215 into the locking rails 1214 and are locked by the locking positions 122 of the locking rails 1214, so that the stretched wire maintains a certain free length.

In some embodiments, as shown in fig. 7 and 8, the locking rail 1214 has opposing first 1221 and second 1222 sidewalls, the first 1221 being connected to the ring rail 1215, the second 1222 being connected to the first 1211. The locking position 122 is defined by a first protrusion 1223 disposed within the locking track 1214, the first protrusion 1223 connecting the first sidewall 1221 and the second sidewall 1222, and the height of the first protrusion 1223 being less than or equal to the height of the first sidewall 1221. Wherein the first side wall 1221 and the second side wall 1222 together define a rolling direction of the ball 130 in the locking track 1214, and a distance between the first side wall 1221 and the second side wall 1222 may be greater than or equal to an outer diameter of the ball 130, so that the ball 130 rolls against a bottom of the locking track 1214, and the ball 130 is prevented from moving out of the track 121 during rolling. The second sidewall 1222 is connected to an outer side of the first rail 1211. Wherein the maximum height of the first sidewall 1221 protruding from the bottom of the ring-shaped rail 1215 may be lower than the depth of the ring-shaped rail 1215, and the first projection 1223 is connected between the first sidewall 1221 and the second sidewall 1222 and may define a groove structure together with the first sidewall 1221 and the second sidewall 1222. As the ball 130 rolls to the position of the first sidewall 1221 during the cable being continuously stretched, the ball 130 is able to pass over the first sidewall 1221 of the locking track 1214 and roll all the way along the circular track 1215. When the user loosens the cable to a certain length, the take-up reel 120 rotates in the second direction under the restoring force of the restoring member 150, the ball 130 can roll to the locking position 122 through the first protrusion 1223 in the first direction, the ball 130 can roll to the locking track 1214 from the ring track 1215, and at this time, the ball 130 is locked at the locking position 122, so as to maintain the free length of the cable after being stretched.

In addition, in some embodiments, the second sidewall 1222 may be provided with a notch communicating with the first track 1211 for allowing the take-up reel 120 to slightly rotate in the second direction by a small angle when the user pulls the cable again, and the ball 130 rolls in the first direction relative to the take-up reel 120, and the ball 130 locked at the locking position 122 may roll from the notch of the second sidewall 1222 to the first track 1211 beyond the locking position 122, wherein the take-up reel 120 continues to rotate in the second direction under the restoring force of the restoring member 150, so that the ball 130 can roll in the first direction relative to the first track 1211 to continuously wind the stretched cable for the recovery of the cable.

In some embodiments, as shown in fig. 8, the track 121 may further be provided with one or more limiting locations 1225, the limiting locations 1225 being disposed at an end of the communicating track 1213 near the first track 1211. As an example, the restriction 1225 may be defined by a second protrusion 1226 provided at an intersection of the communication rail 1213 and the first rail 1211, and the height of the second protrusion 1226 may be lower than or equal to the depth of depression of the first rail 1211. As an example, the first track 1211 has first and second opposing annular walls, and the second projection 1226 connects the first and second annular walls.

The main functions of the second projection 1226 are: (1) when the cable is stretched, the ball 130 rolls in the second direction, so that the ball 130 can roll out of the first track 1211 and roll to the communication track 1213, so that the ball can roll into the circular track 1215 along the communication track 1213 without continuing to roll along the first track 1211; (2) when the restoring member 150 is completely restored to the original position, the balls 130 may abut against the second protrusion 1226 and may be retained at the position of the second protrusion 1226 or at the locking position 122.

The above-described wire rewinding cartridge 100 can be applied to a measuring device, wherein the measuring device can be a body measuring device or a size measuring device, for example, the body measuring device 200 shown in fig. 9, and further for example, can be applied to a tape measure, the housing 110 of the wire rewinding cartridge 100 can be fixed on the measuring device, and the wire rewinding disc 120 can unwind and rewind the spooled wire.

Referring to fig. 9, an embodiment of the present invention further provides a body measurement device 200, which includes a base 220, a handle 210, the above-mentioned wire collecting box 100, a cable 230, and an impedance measurement circuit 240, wherein the base 220 is provided with at least two first electrode plates 221, and the handle 210 is provided with at least two second electrode plates 211; the cable 230 is wound on the take-up reel 120 of the take-up box 100; the impedance measuring circuit 240 is disposed on the base 220, the cable 230 is electrically connected to the second electrode piece 211 and the impedance measuring circuit 240, and the impedance measuring circuit 240 is electrically connected to the first electrode piece 221; alternatively, the impedance measuring circuit 240 is provided in the handle 210; the cable 230 is electrically connected to the first electrode pad 221 and the impedance measuring circuit 240, and the impedance measuring circuit 240 is electrically connected to the second electrode pad 211.

In some embodiments, the wire-rewinding cartridge 100 may be provided on the base 220 or the handle 210, and as an example, the wire-rewinding cartridge 100 may be provided on the base 220, wherein one end of the cable 230 is wound on the wire-rewinding cartridge 100 and the other end is connected to the handle 210. When the handle 210 is not in use, the handle 210 may be housed within the base 220 or secured outside the base 220.

When the user uses the body measuring device 200, the user may remove the handle 210 from the base 220, and the user may pull the handle 210 upward, at which time the cable 230 is stretched under tension, and the take-up reel 120 continuously rotates in the first direction to release the wound cable. After the cable 230 is stretched to a certain length, when the user stops stretching the cable 230 and releases his hand, the ball 130 can roll to the locking position 122 and be locked at the locking position 122, so that the take-up reel 120 is in a self-locking state, and the stretched cable keeps a certain free length.

When the user needs to withdraw the cable, the user only needs to pull the cable again, the take-up reel 120 rotates a small angle in the second direction, the ball 130 can roll in the first direction relative to the locking rail 1214 and can enter the first rail 1211 from the locking position 122, the take-up reel 120 rotates under the restoring force of the restoring member 150, and the ball 130 can roll continuously in the first direction relative to the first rail 1211 until the extended cable 230 is wound onto the take-up reel 120 again, so as to achieve the recovery of the cable 230.

According to the body measurement device 200 provided by the embodiment of the application, by arranging the take-up box 100, when a user needs to use the body measurement device, the user only needs to pull the handle 210 and stretch the cable 230 to a required length, and meanwhile, the locking of the take-up reel 120 can be realized through the locking position 122, so that the cable 230 is kept at a specific length, and the user can stretch the cable 230 to different lengths at will to meet the requirements of people with different arm lengths; when the user does not need to use, the cable 230 can be wound up through the take-up box 100, so that the cable 230 is prevented from occupying extra space, the cable 230 does not need to be manually sorted, and the cable 230 is prevented from being wound with other articles or the cable 230.

While the present embodiments have been described with reference to the accompanying drawings, the present application is not limited to the above embodiments, which are illustrative and not restrictive, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present application.

Claims (13)

1. A take-up cassette, comprising:

a seat body having a mounting surface with a groove;

the take-up reel is arranged on the mounting surface, a rail is arranged on one side of the take-up reel, which faces the mounting surface, and a locking position is arranged on the rail; and

the ball is arranged in the groove, and at least part of the ball protrudes out of the mounting surface and is embedded into the track;

when the take-up reel rotates under the action of external force, the ball rolls along the track and selectively enters the locking position.

2. The take-up cassette of claim 1, wherein the track comprises a first track, a second track, and a communication track; the first rail is arranged around the rotating axis of the take-up reel, and the second rail is arranged outside the first rail and around the rotating axis of the take-up reel; the communication track extends along the tangential direction of the first track and is communicated with the first track and the second track; the locking position is arranged on the second track.

3. The take-up cassette of claim 2, wherein the second rail comprises an annular rail disposed around the rotational axis of the take-up reel and a locking rail connected between the annular rail and the first rail, the locking site being disposed on the locking rail.

4. The take-up cassette of claim 3, wherein the locking track has first and second opposing sidewalls, the first sidewall being connected to the annular track, the second sidewall being connected to the first track, the locking position being defined by a first protrusion disposed within the locking track, the first protrusion connecting the first and second sidewalls, and the first protrusion having a height that is less than or equal to the height of the first sidewall.

5. The take-up box according to claim 2, wherein the rail is further provided with one or more limiting locations, the limiting locations being provided at an end of the communicating rail near the first rail.

6. The take-up box according to claim 5, wherein the restriction site is defined by a second protrusion disposed at the intersection of the communication track and the first track, the second protrusion having a height lower than or equal to the depth of the recess of the first track.

7. A take-up cassette according to claim 6, wherein the first track has first and second opposed annular walls, the second projection connecting the first and second annular walls.

8. The take-up box according to any one of claims 1 to 7, wherein the mounting surface is provided with a rotary post, and the take-up reel is rotatably disposed on the mounting surface with the rotary post as an axis; the take-up box further comprises a reset piece for enabling the take-up reel to rotate, one end of the reset piece is fixed on the rotating column, and the other end of the reset piece is fixed on the take-up reel.

9. A take-up cassette according to claim 8, wherein the take-up reel comprises a base plate, an outer side plate and an inner side plate; the base plate includes first and second surfaces facing away from each other, the second surface facing the mounting surface; the inner side plate is arranged on the first surface, and the outer side plate is arranged around the inner side plate and close to the edge of the first surface; a receiving space for receiving cables is formed between the outer side plate and the inner side plate; the bottom plate is provided with a rotating shaft hole penetrating through the first surface and the second surface, the rotating column penetrates through the rotating shaft hole, and the track is arranged on the second surface; one end of the reset piece is fixed on the outer side plate.

10. The take-up box according to claim 9, wherein the restoring member comprises an elastic winding ring, a first connecting portion and a second connecting portion, the first connecting portion and the second connecting portion are respectively connected to two ends of the elastic winding ring, the elastic winding ring is disposed around the rotating shaft hole for at least one circle, one end of the first connecting portion, which is far away from the elastic winding ring, is fixed to the rotating post, and one end of the second connecting portion, which is far away from the elastic winding ring, is fixed to the outer panel; the first connecting portion is located on the inner side of the elastic rolling ring, and the second connecting portion is located on the outer side of the elastic rolling ring.

11. The take-up cassette of claim 9, wherein the outer side panel comprises a first side panel and a second side panel, the first side panel and the second side panel being disposed around the rotary post, two gaps being formed between the first side panel and the second side panel; the reset piece is connected to the first side plate, the inner side plate is located in an area defined by the first side plate and the second side plate, and the storage space is formed between the inner side plate and the first side plate; the take-up box further comprises a cable, wherein two ends of the cable respectively extend out through different gaps and are wound on the periphery of the outer side plate along opposite directions.

12. The take-up cassette of claim 8, wherein the take-up spool comprises a bottom plate and a first side plate; the bottom plate comprises a first surface and a second surface which are opposite, the second surface faces the mounting surface, the first side plate is connected to the first surface and arranged around the rotary column, and the first side plate is provided with two notches; the wire rewinding box further comprises a wire, wherein two ends of the wire respectively extend out of the different notches and are wound on the periphery of the first side plate along opposite directions.

13. A body measurement device, comprising:

the base is provided with at least two first electrode plates;

the handle is provided with at least two second electrode plates;

a take-up box according to any one of claims 1 to 12;

the cable is wound on a take-up reel of the take-up box; and

the impedance measuring circuit is arranged on the base, the cable is electrically connected with the second electrode plate and the impedance measuring circuit, and the impedance measuring circuit is electrically connected with the first electrode plate; alternatively, the first and second electrodes may be,

the impedance measuring circuit is arranged on the handle; the cable is electrically connected with the first electrode plate and the impedance measuring circuit, and the impedance measuring circuit is electrically connected with the second electrode plate.

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