WEARABLE DEVICE

The present disclosure claims a priority to the Chinese Patent Application No. 202111139567.3, entitled “WEARABLE DEVICE” filed with China Patent Office on Sep. 27, 2021, the entire contents of which are incorporated into the present disclosure by reference.

TECHNICAL FIELD

The present disclosure relates to a technical field of wearable devices, and more particularly, to a wearable device.

DESCRIPTION OF RELATED ART

With the development of electronic technology, wearable devices are becoming more and more popular among people. Each wearable device generally comprises a device body and a strap, the device body is used to display image information to users, and the strap is used for users to wear the device body on their heads, hands or feet. In order to fit different users, a length of the strap needs to be adjusted so as to adjust the tightness of the wearable device. However, in current wearable devices, the accuracy of tightness adjustment is low, and users often need multiple operations to adjust to an appropriate tightness, which greatly affects the user experience.

SUMMARY

A main purpose of the present disclosure is to provide a wearable device that can adjust tightness more accurately.

In order to achieve the above purpose, the present disclosure provides a wearable device comprising:

- a device body provided with a controller;
- two straps, wherein one end of one of the two straps and one end of the other one of the two straps are connected to one end and the other end of the device body, respectively, and the other end of the one of the two straps and the other end of the other one of the two straps are connected to each other and are partially overlapped;
- a length measurement mechanism comprising a detection part and a color sensor respectively provided on the two straps, wherein the color sensor is electrically connected to the controller, and a color of the detection part identified by the color sensor represents an overlapping length between the two straps; and
- a tightness adjustment mechanism provided on the straps, wherein the overlapping length between the two straps are adjusted by the tightness adjustment mechanism, so as to adjust a tightness of the wearable device.

Optionally, a plurality of detection parts are provided, and the plurality of detection parts are distributed at different positions along a length direction of the strap, and wherein the detection parts at different positions are coated with UV paint or phosphor of different colors.

Optionally, the detection parts at different positions are provided with light sources of different colors.

Optionally, the straps comprise a first strap and a second strap;

- wherein the tightness adjustment mechanism comprises an adjustment member provided at an end of the first strap, and a gear rack structure provided at the second strap, the adjustment member comprises a body portion, the body portion is provided with an adjustment cavity, and at least the gear rack structure is movable in and out of the adjustment cavity;
- wherein, the adjustment member further comprises a hook member rotatably provided in the adjustment cavity and have a first state and a second state,
- wherein, in the first state, the hook member is engaged with the gear rack structure and drives the adjustment member to move, which drives the hook member to move relative to the gear rack structure, to change a length of the gear rack structure inserted into the adjustment cavity, so as to increase a length of the second strap overlapping with the first strap; and
- wherein, in the second state, the hook member is disengaged from the gear rack structure, so that the second strap moves in a direction of retracting from the adjustment cavity, so as to reduce a length of the second strap overlapping the first strap.

Optionally, the gear rack structure comprises a plurality of tooth slots spaced apart from each other, and in the first state, the hook member is engaged in the tooth slots, wherein the tooth slots are the detection parts; and

- the color sensor is disposed at the hook member, the hook member is engaged in different tooth slots, so as to change the overlapping length between the two straps, to be correspond to the color identified by the color sensor.

Optionally, the tightness adjustment mechanism further comprises a rotating shaft rotatably provided at the adjustment member, and the hook member is fixedly connected to the rotating shaft.

Optionally, one mounting hole is provided on each of opposite sides of the adjustment member, and each of two ends of the rotating shaft is respectively installed in one mounting hole; at least one end of the rotating shaft is provided with a toggle portion, the toggle portion is exposed outside the adjustment member, and driving of the toggle portion drives the hook member to switch between the first state and the second state.

Optionally, the tightness adjustment mechanism further comprises an elastic member, and the elastic member can act on the hook member, so that the hook member in the second state has a tendency to move to the first state.

Optionally, the elastic member is a torsion spring sleeved on the rotating shaft, the torsion spring comprises a spring body and a first torsion arm and a second torsion arm respectively connected to two ends of the spring body, the first torsion arm is fixedly connected to the adjusting member, and the second torsion arm abuts against the hook member.

Optionally, the gear rack structure comprises a plurality of tooth slots disposed spaced apart from each other, the hook member has an engaging end, and in the first state, the engaging end is obliquely engaged in the tooth slots,

- wherein, the tooth slot has opposite first and second sides, the hook member moves from the first side of one tooth slot to another tooth slot adjacent to the one tooth slot to increase the overlapping length between the two straps,
- wherein, at the first side, each of the tooth slots is provided with a guide slope parallel to the engaging end, and the guide slope is configured to guide the engaging end to enter another tooth slot adjacent to the one tooth slot from the first side.

Optionally, at the second side, each of the tooth slots is provided with a stop surface, and the stop surface is disposed at an acute or a right angle with respect to a bottom wall of each of the tooth slots, to limit the engaging end from entering another tooth slot adjacent to the one tooth slot from the second side.

Optionally, the wearable device is a wrist-worn device, and the wrist-worn device has an electrocardiographic monitoring function,

- the tightness adjustment mechanism comprises an adjustment member provided at an end of one of the straps, and the other strap is movably connected to the adjustment member, a monitoring electrode electrically connected to the controller is located outside the device body and/or the adjustment member, and at least two monitoring electrodes are provided for electrocardiographic monitoring, and
- the wrist-worn device has a wearing side, at least one monitoring electrode is arranged on the wearing side, and at least one monitoring electrode is arranged on another position except the wearing side.

Optionally, the monitoring electrode comprises a first monitoring electrode arranged on the wearing side and a second monitoring electrode arranged at another position,

- the device body is provided with at least one first monitoring electrode and one second monitoring electrode, and the adjustment member is provided with at least one first monitoring electrode.

Optionally, the device body is provided with at least one first monitoring electrode, and the adjustment member is provided with at least one second monitoring electrode.

Optionally, the wearable device further comprises a tightness sensing member electrically connected to the controller, and the tightness sensing member is provided on a wearing side of the wearable device and is configured to detect the tightness of the wearable device.

Optionally, the tightness sensing member is a pressure sensor, and a pressure value detected by the pressure sensor represents the tightness of the wearable device.

Optionally, a pressure value detected by the pressure sensor corresponds to an overlapping length between the two straps, the controller is configured to obtain a target overlapping length according to a target pressure value, and to obtain a current overlapping length between the two straps, so as to obtain a length adjustment value according to the target overlapping length and the current overlapping length, so that the tightness adjustment mechanism adjusts the overlapping length between the two straps to the target overlapping length according to the length adjustment value.

Optionally, the pressure sensor is also configured to detect an actual pressure value after the overlapping length between the two straps is adjusted to the target overlapping length. The controller obtains the actual pressure value and determines whether a difference between the actual pressure value and the target pressure value is less than or equal to a preset pressure difference.

Optionally, the target pressure value comprises a test pressure value, the wearable device is a wrist-worn device, and when the wrist-worn device is at a tightness corresponding to the test pressure value, the wrist-worn device can be used for testing blood oxygen saturation.

Optionally, the wearable device further comprises a prompter electrically connected to the controller, the prompter comprises at least one of a display screen, a speaker, and a vibrator, and the prompter is configured to receive and feedback an adjustment instruction generated by the controller.

Optionally, the two straps are detachably connected to the device body, one end of each of the straps is provided with a locking protrusion, and each of both ends of the device body is provided with a locking groove, and the locking groove is engaged with the locking protrusion;

- the locking protrusion provided on at least the first strap is a conductive locking protrusion, an electronic components on the strap is electrically connected to the conductive locking protrusion, the locking groove corresponding to the conductive locking protrusion is provided with a second conductive contact therein, the second conductive contact is electrically connected to the controller, and the conductive locking protrusion can be in contact and conduct with the second conductive contact after being engaged with the locking groove.

Optionally, the second conductive contact is provided on a conductive pin or a conductive elastic piece in the locking groove, one end of the conductive pin or the conductive elastic piece is connected to a wall of the locking groove and is electrically connected to the controller, and another end of the conductive pin or the conductive elastic piece is provided with the second conductive contact, to contact and conduct with the conductive locking protrusion.

In the technical solution of the present disclosure, after the two straps are connected each other, the color sensor can be arranged opposite to the detection part. In the length direction of the second strap, different colors are distributed at different positions of the detection parts. When adjusting the tightness adjustment mechanism, as the overlapping length between the two straps changes, the color sensor corresponds to different positions of the detection part, thus different colors can be identified, so that a color identified by the color sensor corresponds to an overlapping length between the two straps, and thus the recognition result of the color sensor can represent the overlapping length between the two straps. As such, it can provide a basis for adjusting the tightness conveniently, quickly and accurately, to ensure the user's wearing comfort.

BRIEF DESCRIPTION OF DRAWINGS

In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure or in the prior art, the drawings required to be used for the content of the embodiments or the prior art will be briefly introduced in the following. Obviously, the drawings in the following description are merely some embodiments of the present disclosure, and for those of ordinary skill in the art, other drawings can also be obtained from the provided drawings without any creative effort.

FIG. 1 is a structural schematic diagram of a wearable device from a perspective according to an embodiment of the present disclosure;

FIG. 2 is a structural schematic diagram of the wearable device from another perspective according to an embodiment of the present disclosure;

FIG. 3 is an exploded view of the wearable device according to an embodiment of the present disclosure;

FIG. 4 is an exploded view of the wearable device according to another embodiment of the present disclosure;

FIG. 5 is an exploded view of the wearable device according to still another embodiment of the present disclosure;

FIG. 6 is a cross-sectional view of a tightness adjustment mechanism according to an embodiment of the present disclosure;

FIG. 7 is a partial structural schematic diagram of the tightness adjustment mechanism according to an embodiment of the present disclosure;

FIG. 8 is another partial structural schematic diagram of the tightness adjustment mechanism according to an embodiment of the present disclosure;

FIG. 9 is a partial structural exploded view of the tightness adjustment mechanism according to an embodiment of the present disclosure;

FIG. 10 is a partial cross-sectional view of the wearable device according to an embodiment of the present disclosure; and

FIG. 11 is a partial cross-sectional view of the wearable device according to another embodiment of the present disclosure.

Explanation of reference numerals

Numeral
Name
Numeral
Name

100
device body
200
first strap

110
resistance
201
locking

detection

protrusion

element

120
Hall element
210
adjustment

member

101
first end
211
adjustment

cavity

102
second end
212
mounting hole

103
locking groove
220
hook member

300
second strap
221
engaging end

310
gear rack
230
rotating shaft

structure

311
tooth slot
231
toggle portion

312
guide slope
240
torsion spring

313
stop surface
241
first torsion

arm

320
resistance
242
second torsion

element

arm

301
second strap
243
spring body

body

302
memory metal
250
color sensor

portion

410
first
260
pressure sensor

monitoring

electrode

420
second
270
magnet

monitoring

electrode

510
conductive
a
first side

elastic piece

520
conductive pin
b
second side

p
wearing side

The realization of the purpose, functional features and advantages of the present disclosure will be further described with reference to the embodiments in combination with the accompanying drawings.

DETAILED DESCRIPTIONS

Technical solutions of embodiments of the present disclosure will be clearly and completely described below with reference to the drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only a part of the embodiments of the present disclosure, rather than all the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present disclosure.

It should be noted that all directional indications (such as up, down, left, right, front, back . . . ) in the embodiments of the present disclosure are only used to explain the relative positional relationships and movement conditions, etc. among the components in a specific posture (as shown in the accompanying drawings), and if the specific posture changes, the directional indication will also be changed accordingly.

In addition, “first”, “second”, etc. in the present disclosure are only for descriptive purposes, and should not be construed as indicating or implying their relative importance or implicitly indicating the quantity of indicated technical features. Thus, the features defined with “first”, “second”, etc. may explicitly or implicitly include at least one of these features. In addition, the meaning of “and/or” herein comprises three parallel schemes. For example, the meaning of “A and/or B” comprises a scheme A, a scheme B, or a scheme of both A and B. In addition, the technical solutions of various embodiments of the present disclosure can be combined with each other, but it should be based on the fact that the technical solutions can be realized by those skilled in the art. When the combination of technical solutions is contradictory or cannot be realized, it should be considered that the combination does not exist and is not within the scope of protection required by the present disclosure.

The present disclosure provides a wearable device.

In an embodiment of the present disclosure, as illustrated in FIGS. 1 and 2, the wearable device comprises:

- a device body 100 provided with a controller;
- two straps, comprising a first strap 200 and a second strap 300, wherein one end of the first strap 200 is connected to one end of the device body 100, and one end of the second strap 300 is connected to another end of the device body 100, and the other end of the first strap 200 and the other end of the second strap 300, are connected to each other and are partially overlapped;
- a tightness adjustment mechanism provided on the straps, wherein an overlapping length between the two straps are adjusted by the tightness adjustment mechanism, so as to adjust a tightness of the wearable device; and
- a length measurement mechanism electrically connected to the controller and used for measuring the overlapping length between the two straps.

It will be understood that the two ends of the strap are a free end and a fixed end, the fixed end of the strap is used to connect to an end of the device body 100, and the free ends of the two straps are connected to each other, so that the two straps and the device body 100 are enclosed together to form a wearing ring. The size of the wearing ring should be adapted to the user's head, hands or feet, so that the tightness of the wearable device meets the user's needs, thereby improving the comfort of users wearing the wearable device. Here, the wearable device comprises watches, smart watches or smart bracelets that can be worn on the wrist, motion monitoring modules that can be worn on the feet, and 3D display devices that can be worn on the head.

In the present disclosure, the size of the wearing ring can be determined based on the overlapping length detected by the length measurement mechanism. Accordingly, when an optimal overlapping length is determined, the wearing ring may also correspond to the size of the highest comfort. In general, the wearable device of the present disclosure can determine the optimal overlapping length in the following two ways:

The first way is to determine the most comfortable wearing ring for the user based on a circumference of a body part where the user wears the wearable device. The second way is to determine the most comfortable wearing ring through the user's own perception when wearing it for the first time. At this time, the overlapping length between the two straps, which is the optimal overlapping length, is detected by the length measurement mechanism.

The size of the wearing ring can be changed by changing the overlapping length between the two straps, and therefore, after determining the wearing ring with the highest comfort, when the user wears the wearable device, he or she can first make a rough adjustment and the length measurement mechanism can detect the current overlapping length between the two straps, and a difference between the current overlapping length and the optimal overlapping length is a length adjustment value. Since the length measurement mechanism is electrically connected to the controller, the controller obtains the current overlapping length and the optimal overlapping length, to obtain the length adjustment value and feeds back it to the user. The user can change the overlapping, length between the two straps by adjusting the tightness adjustment mechanism, the adjustment amount corresponds to the length adjustment value, and the overlapping length between the two straps can be adjusted to the optimal overlapping length, as a result, the wearing ring can also be adjusted to the size of the highest comfort. In this way, the wearable device of the present disclosure can adjust the tightness more accurately, thereby improving the user's wearing comfort.

Referring to FIG. 3, in some embodiments, the length measurement mechanism comprises:

- a resistance element 320 provided on the second strap 300 and electrically connected to the controller;
- a conductive member provided on the first strap 200, wherein one end of the conductive member is electrically connected to the controller, and another end thereof is used to conduct the resistance element 320; and
- a resistance detection element 110 electrically connected to the controller,
- wherein the conductive member is conductive to the resistance element 320, and a detection circuit is formed between the controller, the resistance detection element 110, the conductive member and the resistance element 320,
- wherein corresponding to different overlapping lengths between the two straps, the conductive member is conductive to different positions of the resistance element 320, so that the resistance of the resistance element 320 connected to the detection circuit is different,
- wherein the resistance detection element 110 detects the resistance of the resistance element 320 connected to the detection circuit, to represent the overlapping length between the two straps.

As such, a resistance value of the resistance detection element 110 may correspond to an overlapping length between the two straps. In the embodiment, the overlapping length is represented by the resistance value, which is convenient, fast and accurate, and can provide precise basis for adjusting the tightness, so as to ensure the user's wearing comfort.

Furthermore, the resistance element 320 is arranged in a long strip shape extending along a length direction of the second strap 300. Corresponding to different overlapping lengths between the first strap 200 and the second strap 300, the length of the resistance element 320 connected to the detection circuit is different.

It will be understood that each strap, at an end away from the device body 100, should have a portion for overlapping with another strap, the second strap 300 of at least such portion should be distributed with the resistance element 320 in a long strip shape, and the conductive member should also be disposed on the first strap 200 of such portion, and within an adjustable range of the overlapping length, the conductive member should always be disposed corresponding to the resistance element 320 to ensure that the conductive member can be conductive to the resistance element 320. As such, when changing the overlapping length between the two straps, the resistance detection element 110 can always detect the resistance value corresponding to the current overlapping length. In particular, when the resistance element 320 is arranged in a uniform long strip structure, the resistance value of the resistance element 320 connected to the detection circuit will has a linearly relationship to the length thereof connected to the detection circuit, making it easier to obtain the length adjustment value.

Of course, the resistance element may also be formed by connecting a plurality of resistance elements in series. Corresponding to different overlapping lengths between the two straps, the number of resistance elements connected to the detection circuit is different. In this way, the resistance value detected by the resistance element may represent the overlapping length between the two straps.

Referring to FIG. 6 to FIG. 9 together, the tightness adjustment mechanism further comprises an adjustment member 210 provided at an end of the first strap 200, and a gear rack structure 310 provided at the second strap 300, the adjustment member 210 is provided with an adjustment cavity 211, and at least the gear rack structure 310 is movable in and out of the adjustment cavity 211. The tightness adjustment mechanism further comprises a hook member 220 rotatably provided in the adjustment cavity 211 and have a first state and a second state. In the first state, the hook member 220 is engaged with the gear rack structure 310 and drives the adjustment member 210 to move, which can drive the hook member 220 to move relative to the gear rack structure 310, to change the length of the gear rack structure 310 inserted into the adjustment cavity 211, so as to increase the length of the second strap 300 overlapping with the first strap 200. In the second state, the hook member 220 is disengaged from the gear rack structure 310, so that the second strap 300 can move in a direction of retracting the adjustment cavity 211, so as to reduce the length of the second strap 300 overlapping with the first strap 200.

In the embodiment, the gear rack structure 310 comprises a plurality of tooth slots 311 spaced apart from each other. After the second strap 300 is inserted into the adjustment cavity 211, the hook member 220 can be adjusted to the first state to engage the hook member 220 in one of the tooth slots 311 of the gear rack structure 310, and the second strap 300 can be stably connected to the first strap 200 without external force.

When it is necessary to increase the overlapping length between the two straps, the user should apply force on the second strap 300 while applying force to drive the adjustment member 210, so that the hook member 220 will slide between the tooth slots 311 of the gear rack structure 310, and that the length of the second strap 300 inserted into the adjustment cavity 211 is longer. It will be understood that before the second strap 300 is fully extended into the adjustment cavity 211, the longer the length of the second strap 300 is inserted into the adjustment cavity 211, the longer the overlapping length between the two straps; and after the second strap 300 is fully inserted into the adjustment cavity 211, the longer the length of the second strap 300 extending out of the adjustment cavity 211, the longer the overlapping length between the two straps.

When it is necessary to reduce the overlapping length between the two straps, the hook member 220 should be adjusted to the second state, so that the hook member 220 is disengaged from the tooth slots 311 of the gear rack structure 310, and the second strap 300 can be easily moved to a direction of retracting from the adjustment cavity 211, so as to meet the user's adjustment needs.

In general, in the embodiment, the adjustment cavity 211 is provided on the opposite side of a wearing side p of the first strap 200, so that after the second strap 300 is inserted into the adjustment cavity 211, the second strap 300 can be enclosed at an outer side of the first strap 200, which is convenient for the user to apply force, can improve the user's convenience in adjusting the tightness. The adjustment member 210 comprises two parts fixedly connected by pins, and the two parts jointly enclose the adjustment cavity 211. As such, other components of the tightness adjustment mechanism may be installed in one part of the adjusting member 210, and then the other part of the adjusting member 210 may be fixed, which can improve the assembly convenience of the tightness adjusting mechanism. At this time, the adjustment cavity 211 has no other openings except an inlet and an outlet. Of course, in other embodiments, the adjustment member may also be an integral structure, and may be opened on the side to facilitate the assembly of other components, and the adjusting cavity may have other openings besides the inlet and outlet, as long as the second strap cannot detach from the adjustment cavity through this opening.

Furthermore, the resistance element 320 at least has a portion disposed corresponding to the gear rack structure 310; the conductive member is the hook member 220, the hook member 220 is engaged in the tooth slots 311 and can be conductive to the resistance element 320, so that the detection circuit is formed between the controller, the resistance element 320, the hook member 220 and the resistance detection element 110. As the hook member 220 is engaged in different tooth slots 311, so that the overlapping length between the two straps can be changed, and different positions of the resistance element 320 can be conducted, which can change a resistance of the resistance element 320 connected to the detection circuit, such that a detection value of the resistance detection element 110 corresponds to the current overlapping length.

In this way, the cooperation of the hook member 220 and the tooth slots 311 can not only realize the tightness adjustment of the wearable device, but also connect the resistance element 320 to the detection circuit, to ensure that the detection results of the length measurement mechanism can be synchronized with the adjustment process of the tightness adjustment mechanism, and to ensure the accuracy of tightness adjustment. In addition, in the present disclosure, an adjustment range of the overlapping length between the two straps is determined by the hook member 220 respectively engaged with the tooth slots 311 at both ends of the gear rack structure 310. In the embodiment, the hook member 220 is made of a conductive material, so that the resistance element 320 is conductive to the resistance element 320, to ensure that the length measurement mechanism can detect the overlapping length between the two straps within the adjustment range.

Optionally, a first conductive contact electrically connected to the resistance element 320 is provided in the tooth slots 311, the hook member 220 is engaged in the tooth slots 311 and can contact and be conductive to the first conductive contact. As such, the hook member 220 can be indirectly conductive to the resistance element 320 by contacting the first conductive contact. Optionally, a surface of the resistance element 320 is exposed at a bottom of the tooth slots 311, and the hook member 220 is engaged in the tooth slots 311 and can contact and be conductive to the resistance element 320. As such, the hook member 220 can be directly conductive to the resistance element 320 by contacting the surface of the resistance element 320.

Furthermore, when the resistance element 320 is in a long strip shape, the resistance element 320 is made of a memory metal material, and the resistance element 320 has an arc-shaped memory state in a natural state, so that the second strap 300 is at least partially naturally curved. It will be understood that the memory metal has super elasticity, which means that the memory metal has a much greater deformation recovery ability than ordinary metals under the action of external force, that is, the large strain generated during the loading process will be eliminated with unloading, thereby returning to the memory shape. In the embodiment, the resistance element 320 is made of the memory metal material, which can have both electrical conductivity and deformation recovery capabilities, so as to avoid the deformation of the resistance element 320 causing a change of its relative position to the tooth slots 311, resulting in the hook member 220 cannot be conductive to the resistance element 320, so as to ensure the stability of the length measurement mechanism.

Referring to FIG. 4, in some embodiments, the length measurement mechanism comprises a detection part and a color sensor 250 respectively provided on the two straps. The color sensor 250 is electrically connected to the controller, and the color of the detection part identified by the color sensor 250 represents the overlapping length between the two straps.

Specifically, the color sensor 250 is provided on the first strap 200, and the detection part is provided on the second strap 300. Different detection parts can reflect or emit light of different colors for the color sensor 250 to identify. Corresponding to different overlapping lengths between the two straps, different detection parts are arranged opposite to the color sensor 250, so that the color identified by the color sensor 250 corresponds to the overlapping length between the two straps, to represent the overlapping length of the two straps using the color identified by the color sensor 250.

The color sensor 250 is a small digital sensor that can convert red, green, and blue components of light into a pulse signal of a certain frequency and can directly measure the RGB color information of an object to be detected, without an A/D converter and an impedance amplifier. The color sensor 250 has high reliability in detecting similar colors and hues, and is widely used in colorimetric analysis.

It will be understood that the detection part should be disposed close to the free end of the second strap 300, and the color sensor 250 should also be disposed close to the free end of the first strap 200, so that after the two straps are connected, the color sensor 250 can be disposed opposite the detection part. In the length direction of the second strap 300, different colors are distributed at different positions of the detection part. As the overlapping length between the two straps changes, the color sensor 250 corresponds to different positions of the detection part, thus different colors can be identified, so that a color identified by the color sensor 250 corresponds to an overlapping length between the two straps, and thus the recognition result of the color sensor 250 can represent the overlapping length between the two straps. As such, it can also provide a basis for adjusting the tightness conveniently, quickly and accurately, to ensure the user's wearing comfort.

Furthermore, a plurality of detection parts are provided, and the plurality of detection parts are distributed at different positions along the length direction of the second strap 300. Optionally, the detection parts at different positions are coated with UV paint or phosphor of different colors, so that different detection parts can reflect light of different colors for identification by the color sensor 250. Optionally, the detection parts at different positions are provided with light sources of different colors, so that different detection parts can emit light of different colors for identification by the color sensor 250.

Furthermore, the tooth slots are the detection parts. Optionally, different tooth slots 311 are coated with UV paint or phosphor of different colors, so that different tooth slots 311 can reflect light of different colors. Optionally, light sources of different colors are provided in different tooth slots 311, so that different tooth slots 311 can emit light of different colors. The color sensor 250 is disposed on the hook member 220, the hook member 220 engages in different tooth slots 311 and can change the overlapping length between the two straps, the color sensor 250 can identify different colors, and the color identified by the color sensor 250 corresponds to the current overlapping length.

It will be understood that when the hook member 220 engages with different tooth slots 311, it can drive the two straps to move relative to each other, so that the overlapping lengths between the two straps may be different, thereby adjusting the tightness of the wearable device. The hook member 220 is provided with a color sensor 250, different tooth slots 311 can reflect or emit light of different colors, and the color sensor 250 can detect the tooth slot 311 where the hook member 220 is located by identifying the color of the light from the tooth slot 311, so that it is possible to obtain the overlapping length between the two straps at this time. As such, the cooperation of the hook member 220 and the tooth slots 311 can not only realize the tightness adjustment of the wearable device, but also enable the length measurement mechanism to detect the overlapping length between the two straps, so as to ensure that the detection results of the length measurement mechanism can be synchronized with the adjustment process of the tightness adjustment mechanism, and to ensure the accuracy of tightness adjustment, and also to ensure that the length measurement mechanism can detect the overlapping length between the two straps within the adjustment range.

Referring to FIG. 5, in some embodiments, the length measurement mechanism comprises a magnet 270 and a Hall element 120 electrically connected to the controller. One of the Hall element 120 and the magnet 270 is disposed on the second strap 300, and the other is disposed on one of the device body 100 and the first strap 200.

Adjusting the tightness adjustment mechanism can change the relative position of the second strap 300 and the device body 100 and the overlapping length between the two straps, so as to change a distance between the magnet 270 and the Hall element 120 and adjust the tightness of the wearable device, so that a Hall voltage generated by the Hall element 120 corresponds to the overlapping length between the two straps, and thus the Hall voltage generated by the Hall element 120 represents the overlapping length between the two straps.

It will be understood that after the two straps are connected, the overlapping length between the two straps changes, and the tightness of the wearable device can be adjusted. At the same time, the relative position of the two straps will also change, specifically free ends of the two straps will change, and at least the relative position between the second strap 300 and the device body 100 will also change, specifically the distance between the free end of the second strap 300 and the end of the device body 100 will change.

In the embodiment, one of the Hall element 120 and the magnet 270 is disposed on the second strap 300, and the other one is disposed on the first strap 200 or the device body 100, that is, the Hall element 120 and the magnet 270 may be respectively provided on two straps, or one of them is provided on the device body 100 and the other one is provided on a strap. When the tightness adjustment mechanism is adjusted to change the overlapping length between the two straps, the relative position of the strap and the device body 100 changes accordingly, thereby ensuring that the distance between the Hall element 120 and the magnet 270 changes synchronously with the overlapping length between the two straps. In this way, a Hall voltage value generated by the Hall element 120 can correspond to an overlapping length of the two straps, so that the Hall voltage generated by the Hall element 120 can represent the overlapping length between the two straps, which can also provide a basis for adjusting the tightness conveniently, quickly and accurately, to ensure the user's wearing comfort.

Furthermore, the Hall element 120 is provided on the device body 100, and the magnet 270 is provided on the second strap 300. It will be understood that the Hall element 120 needs to be electrically connected to the controller on the device body 100. Thus, the Hall element 120 is disposed on the device body 100, to ensure a stable connection with the controller.

Furthermore, the device body 100 comprises a first end 101 and a second end 102 opposite to each other, the first strap 200 is connected to the first end 101, the second strap 300 is connected to the second end 102, the Hall element 120 is disposed on the first end 101, and the magnet 270 is disposed on an end of the second strap 300 away from the second end 102. That is, the fixed end of the second strap 300 is connected to the second end 102 of the device body 100, and the magnet 270 is provided at the free end of the second strap 300. Specifically, the magnet 270 is embedded in the second strap 300 to achieve a stable connection between the magnet 270 and the second strap 300, and the Hall element 120 is disposed on the first end 101 of the device body 100, accordingly, the distance between the free end of the second strap 300 and the first end 101 of the device body 100 changes, the distance between the magnet 270 and the Hall element 120 will also change simultaneously, so that the Hall element 120 can induce different Hall voltages correspondingly.

Furthermore, the second strap 300 comprises a second strap body 301 and a memory metal portion 302 provided on the second strap body 301. At least a portion of the second strap body 301 for overlapping with the first strap 200 is provided with the memory metal portion 302, which has a memory state of being arc-shaped in a natural state, so that the second strap body 301 is at least partially naturally arc-shaped. In this way, the free end of the second strap 300 can be prevented from interfering displacement under the action of gravity or external force, and the free end of the second strap 300 can be ensured to be stably attached to the first strap 200, which is not only beneficial to the induction of the Hall element 120, but also ensures that the Hall voltage generated by the induction of Hall element 120 accurately corresponds to the overlapping length between the two straps. Of course, a hook may also be provided on the first strap to constrain the free end of the second strap, and the same effect can be achieved.

Furthermore, as illustrated in FIGS. 6-9, the tightness adjustment mechanism further comprises a rotating shaft 230 rotatably provided at the adjustment member 210, and the hook member 220 is fixedly connected to the rotating shaft 230. It will be understood that both ends of the rotating shaft 230 are rotatably connected to the adjustment member 210, and a middle section of the rotating shaft 230 is located in the adjusting cavity 211 for fixed connection of the hook member 220. As such, the rotational stability of the hook member 220 can be improved. Of course, in other embodiments, it is also possible that both sides of the hook member are respectively provided with a connecting protrusion, and the hook member is rotatably connected to the adjustment member through the two connecting protrusions.

Furthermore, as illustrated in FIG. 9, one mounting hole 212 is provided on each of opposite sides of the adjustment member 210, and each of two ends of the rotating shaft 230 is respectively installed in one mounting hole 212. As illustrated in FIG. 7, at least one end of the rotating shaft 230 is provided with a toggle portion 231, the toggle portion 231 is exposed outside the adjustment member 210, and driving of the toggle portion 231 can drive the hook member 220 to switch between the first state and the second state.

In the embodiment, an end of the rotating shaft 230 is inserted into the mounting hole 212 to penetrate the wall of the adjusting cavity 211, the toggle portion 231 is provided at one end of the rotating shaft 230 and is exposed outside the adjustment member 210 for the convenience of user operation, the toggle portion 231 is driven by the user to drive the rotating shaft 230 to rotate and finally drive the hook member 220 to rotate, so that the hook member 220 can switch between the first state and the second state. Of course, in other embodiments, the adjustment member may be provided with an adjustment hole, and the user inserts a finger or a strip into the adjustment hole to directly act on the hook member, which can also enable the hook member to switch between the first state and the second state.

Furthermore, the gear rack structure 310 comprises a plurality of tooth slots 311 disposed spaced apart from each other, the hook member 220 has an engaging end 221, and in the first state, the engaging end 221 is obliquely engaged in the tooth slots 311.

The tooth slot 311 has a first side a and a second side b opposite to each other, the hook member 220 moves from the first side a of one tooth slot 311 to another tooth slot 311 adjacent to the one tooth slot 311, which can increase the overlapping length between the two straps.

At the first side a, each of the tooth slots 311 is provided with a guide slope 312 parallel to the engaging end 221, and the guide slope 312 is used to guide the engaging end 221 to enter another tooth slot 311 adjacent to the one tooth slot 311 from the first side a.

When the user adjusts s the tightness adjustment mechanism to increase the overlapping length between the two straps, the user can firstly fix the adjustment member 210 and then pull the free end of the second strap 300, so that the tooth slots 311 of the gear rack structure 310 sequentially slide over the hook member 220 until it is adjusted in place. When the wearable device is worn on the head or feet, the adjustment member 210 can be fixed with one hand and the second strap 300 can be pulled with the other hand. When the wearable device is worn on the user's wrist, the adjustment member 210 can be pressed against the desktop firstly and the second strap 300 can be pulled with the other hand. Under the guidance of the guide slope 312, the hook member 220 can smoothly slide through the first side a of the tooth slots 311, and the user can pull the second strap 300 with less effort, which is beneficial to improving the user's operating experience in adjusting the tightness.

Furthermore, at the second side b, each of the tooth slots 311 is provided with a stop surface 313, and the stop surface 313 is disposed at an acute or a right angle with respect to a bottom wall of each of the tooth slots 311, to limit the engaging end 221 from entering another tooth slot 311 adjacent to the one tooth slot 311 from the second side b.

It will be understood that in order to facilitate the user to wear the wearable device, the cooperation between the first strap 200 and the second strap 300 is relatively loose in a natural state of the wearable device; after the wearable device is worn on the human body, the cooperation between the first strap 200 and the second strap 300 is relatively tight, thus causing the second strap 300 to have a tendency to detached from the first strap 200. In the embodiment, the second side b of the tooth slot 311 has a stop surface 313 arranged at an acute or right angle to the bottom wall of the tooth slot 311, to inhibit the tendency of the second strap 300 to be detached from the first strap 200 by restricting the engaging end 221 from entering another tooth slot 311 adjacent to the one tooth slot 311 from the second side b.

Furthermore, the tightness adjustment mechanism further comprises an elastic member that can act on the hook member 220, so that the hook member 220 in the second state has a tendency to move to the first state.

In a natural state of the elastic member, if there is no external force, the hook member 220 can be stably in the first state, so that the hook member is locked in one tooth slot 311, thereby locking the two straps, to ensure that the two straps are in stable connection. Further, when the toggle portion 231 is driven to drive the hook member 220 to move to the second state, after the overlapping length between the two straps is adjusted, the force applied on the toggle portion 231 is removed. Here, since the elastic member has a tendency to reset to the natural state, it can drive the hook member 220 to move in a direction of restoring the first state, so that the hook member 220 can finally be locked in the corresponding tooth slot 311, and the two straps can be locked again. Of course, in other embodiments, a limiting hook may be provided on the outside of the adjustment member, when the toggle portion is engaged with the limiting hook, the hook member is correspondingly in the first state, and at this time, it is also possible to lock the hook member.

Furthermore, as illustrated in FIGS. 6-9, the elastic member is a torsion spring 240 sleeved on the rotating shaft 230, the torsion spring 240 comprises a spring body 243 and a first torsion arm 241 and a second torsion arm 242 respectively connected to both ends of the spring body 243. The first torsion arm 241 is fixedly connected to the adjusting member 210, and the second torsion arm 242 abuts against the hook member 220.

In general, in an embodiment of the present disclosure, as illustrated in FIG. 8, when the hook member 220 is in the first state and engaged in the tooth slot 311 and the torsion spring 240 is in the natural state, there is a certain gap between the hook member 220 and the second torsion arms 242. When the engaging end 221 slides along the guide slope 312 towards a tooth slot 311 adjacent to the one tooth slot 311, it is subjected to a reaction force of the guide slope 312, and the hook member 220 will move towards a direction close to the second torsion arm 242 and can abut the second torsion arm 242 if the offset is large enough. After the engaging end 221 enters the tooth slot 311, the shape of the tooth slot 311 and the shape of the engaging end 221 match each other, the engaging end 221 is engaged in the tooth slot 311, then the hook member 220 can return to the first state and maintain a certain distance from the second torsion arm 242 of the torsion spring 240 in the natural state. In this way, when the overlapping length between the two straps is increased, the elastic force on the hook member 220 is smaller, and the user can pull the second strap 300 with less effort. When the hook member 220 is in the second state and the torsion spring 240 returns to the natural state, the hook member 220 cannot be directly driven to the first state; when the torsion spring 240 returns to the natural state, the hook member 220 will be located in a corresponding position that is in contact with the second torsion arm 242, until the hook member 220 is engaged in the tooth slot 311 and then the hook member 220 will return to the first state. Of course, in other embodiments, it is also possible that in the first state, the hook member is in contact with the second torsion arm.

Furthermore, as illustrated in FIGS. 8 and 9, two torsion springs 240 are provided. The two torsion springs 240 are respectively disposed on opposite sides of the hook member 220, and the second torsion arms 242 of the two torsion springs 240 are connected to each other as a whole. By arranging a torsion spring 240 at each of both ends of the hook member 220, the force on the hook member 220 can be more evenly distributed, and connecting the two torsion springs 240 together can prevent excessive force between the second torsion arm 242 and the hook member 220 from causing deformation of the second torsion arm 242.

Furthermore, the wearable device further comprises a tightness sensing member electrically connected to the controller, the tightness sensing member is provided on the wearing side p of the wearable device for detecting the tightness of the wearable device. The tightness sensing member can detect the tightness of the wearable device, the tightness of the wearable device is related to the size of the wearing ring and the circumference of the user's wearing part, which can more intuitively reflect the user's wearing comfort. When the user wears the wearable device for the first time, in order to facilitate the user to determine the optimal size of the wearing ring, the controller of the device body 100 may pre-store a preset tightness recommended in ergonomics, and different parts should correspond to different most comfortable preset tightness. When the user adjusts the tightness adjustment mechanism until the detection result of the tightness sensing member corresponds to the preset tightness, the user is allowed to confirm whether it is comfortable, and if the user feels it is loose or tight, he or she can continue to fine-tune, until the optimal tightness considered by the user is reached. As such, the workload of the user in determining the optimal wearing ring can be greatly reduced.

Furthermore, as illustrated in FIGS. 3-5, the tightness sensing member is a pressure sensor 260, and a pressure value detected by the pressure sensor 260 can represent the tightness of the wearable device. Considering that the device body 100 is not flexible and has poor fit with human skin, the pressure sensor 260 is arranged away from the device body 100, to achieve a better detection effect. For example, the pressure sensor 260 may be disposed on the wearing side p of the first strap 200, the second strap 200 or the adjustment member 210. In general, in the embodiment, the pressure sensor 260 is disposed on the wearing side p of the first strap 200 and is disposed close to the adjustment member 210. In this way, after the user wears the wearable device, the pressure sensor 260 will be located between the human skin and the first strap 200, so that the pressure of the interaction between the two can be sensed. It will be understood that this pressure value is closely related to the tightness of the wearable device, the greater the pressure value, the tighter the wearable device is worn on the human body. Therefore, the pressure value detected by the pressure sensor 260 can represent the tightness of the wearable device. Of course, in other embodiments, the tightness sensing member may also be a friction sensor, and by slightly rotating the wearable device relative to the wearing part of the human body, the friction sensor detects the friction between the strap and the human skin so as to represent the tightness of the wearable device.

Furthermore, a pressure value detected by the pressure sensor 260 corresponds to an overlapping length between the two straps, the controller is configured to obtain a target overlapping length according to a target pressure value, and obtain the current overlapping length detected by the length measurement mechanism, so as to obtain a length adjustment value according to the target overlapping length and the current overlapping length, so that the tightness adjustment mechanism adjusts the overlapping length between the two straps to the target overlapping length according to the length adjustment value.

When the user wears the wearable device for the first time, the tightness can be calibrated for different tooth slots 311. First, the hook member 220 is engaged in a tooth slot 311 closest to the free end of the second strap 300, at this time, the size of the wearing ring is the largest, and then, by pulling the second strap 300, the plurality of tooth slots 311 pass through the hook member 220 in sequence, until the two straps can no longer be tightened or the hook member 220 reaches a tooth slot 311 farthest from the free end of the second strap 300. In this process, the length measurement mechanism feeds back the detection values (such as resistance value, color, or Hall voltage, etc.) corresponding to the overlapping length between the two straps to the controller in sequence, at the same time, the pressure sensor 260 feeds back the pressure values to the controller in sequence, and the controller stores the detection value and the pressure value corresponding to each tooth slot 311. When the user needs to reach a certain target pressure value, the controller can call a detection value corresponding to the target pressure value to determine a tooth slot 311 that the hook member 220 needs to reach, at this time, the length measurement mechanism detects the current tooth slot 311 where the hook member 220 is located, and the controller can give an adjustment instruction after receiving this information. Here, the adjustment instruction comprises loosening or tightening, and a specific number of tooth slots 311 to be adjusted. It will be understood that the target pressure value comprises the optimal pressure value corresponding to the optimal tightness, and at this time, the corresponding target overlapping length is also the optimal overlapping length. The user can mark the optimal pressure value, and in daily wearing, the controller will call the overlapping length corresponding to the optimal pressure value and then feeds back it to the user, the user can easily adjust the overlapping length between the two straps to the optimal overlapping length by adjusting the tightness adjustment mechanism.

Furthermore, the pressure sensor 260 is also used to detect an actual pressure value after the overlapping length between the two straps is adjusted to the target overlapping length, the controller obtains the actual pressure value and determines whether a difference between the actual pressure value and the target pressure value is less than or equal to a preset pressure difference. In this way, the actual pressure value detected by the pressure sensor 260 can provide another accurate basis for adjusting the tightness of the wearable device. Before the user adjusts the tightness adjustment mechanism, the current overlapping length detected by the length measurement mechanism is compared with the optimal overlapping length to obtain the length adjustment value, and the length adjustment value can be used as the basis for the user's operation to guide the user to adjust the overlapping length between the two straps. After the user adjusts the tightness adjustment mechanism, the actual pressure value detected by the pressure sensor 260 is compared with the optimal pressure value, and the controller determines whether a difference between the two is within an allowable error range (that is, it does not exceed the preset pressure value), so as to verify whether the tightness of the wearable device is adjusted properly at this time.

Furthermore, the target pressure value comprises a test pressure value, and the wearable device is a wrist-worn device. When the wrist-worn device is at a tightness corresponding to the test pressure value, the wrist-worn device can be used to test blood oxygen saturation.

In the embodiment, the wearable device is a wrist-worn device for wearing on the user's wrist. The wrist-worn device is provided with a blood oxygen detection module for testing the user's blood oxygen saturation. The blood oxygen detection module is mainly based on Lambert-Beer law and the principle that the spectral absorption rates of oxyhemoglobin and deoxyhemoglobin are different, and by using photoplethysmography (PPG) technology, the blood oxygen saturation is derived by measuring the absorption of light of different wavelengths by blood. When testing the blood oxygen saturation, the wearable device needs to be worn tightly, but not too tight. It will be understood that when the blood oxygen detection module fits loosely on the wrist, there is a gap between it and the skin of the wrist, or when the fit is too tight and causes compression on the wrist, the light signal cannot reliably reflect signs of blood oxygen saturation, which will lead to inaccurate detection results of the blood oxygen detection module.

In the embodiment, after the calibration is completed, a test pressure value that meets the requirements for testing blood oxygen saturation can be marked. It will be understood that the test pressure value is greater than the optimal pressure value, and, a certain error is allowed in the test of blood oxygen saturation. Thus, the test pressure value should be a range value, as long as it ensures that the measurement result of the blood oxygen saturation is within the allowable error range. When the user needs to test blood oxygen saturation, the controller obtains a tooth slot 311 corresponding to the test pressure value and obtains the current tooth slot 311 fed back by the length measurement mechanism and the current pressure value fed back by the pressure sensor 260, to obtain the number of tooth slots 311 that need to be adjusted. Here, if the current pressure value is greater than the test pressure value, the user is prompted to tighten the corresponding tooth slots 311, and if the current pressure value is less than the test pressure value, the user is prompted to loosen the corresponding tooth slots 311. In this way, the wearable device can be adjusted to a tightness that meets the test requirements for blood oxygen saturation, thereby ensuring the accuracy of detection results of the blood oxygen detection module.

Furthermore, the wearable device further comprises a prompter electrically connected to the controller, the prompter comprises at least one of a display screen, a speaker, and a vibrator, and the prompter is used to receive and feedback an adjustment instruction generated by the controller. Optionally, when prompting the number of tooth slots 311 to be adjusted, adjustment information can be displayed on the display screen, or adjustment voice can be broadcast through the speaker. After the tightness is adjusted in place, the user can be prompted to stop adjusting according to vibration of the vibrator. Of course, it is also possible that various prompters work together to provide the user with adjustment information from multiple dimensions, thereby making it more convenient for the user to adjust the tightness.

Furthermore, the wrist-worn device has an ECG monitoring function. As illustrated in FIGS. 1 and 2, the outside of the device body 100 and/or the adjustment member 210 is provided with a monitoring electrode electrically connected to the controller, and at least two monitoring electrodes are provided for ECG monitoring. The wrist-worn device has a wearing side p, at least one of the monitoring electrodes is provided on the wearing side p, and at least one of the monitoring electrodes is provided on another position except the wearing side p.

That is, the monitoring electrode comprises a first monitoring electrode 410 arranged on the wearing side p and a second monitoring electrode 420 arranged at another positions. It will be understood that two electrodes, i.e., a wrist electrode and a finger electrode, are needed to realize the ECG monitoring function, the wrist electrode contacts the wrist of the user wearing the wearable device, and the other hand of the user needs to touch the finger electrode, the cooperation of the two electrodes can accurately achieve the ECG monitoring function. In the embodiment, the first monitoring electrode 410 is disposed on the wearing side p of the wrist-worn device, serving as a wrist electrode in contact with the wrist of the user, and the second monitoring electrode 420 is disposed on another position except the wearing side p, serving as a finger electrode for the user' finger to touch. As such, the accuracy of ECG monitoring can be ensured.

Optionally, the device body 100 is provided with at least one first monitoring electrode 410 and at least one second monitoring electrode 420, and the adjustment member 210 is provided with at least one first monitoring electrode 410. In this way, an ECG signal at the user's wrist can be collected through the first monitoring electrodes 410 at two places, which can further improve the monitoring accuracy of ECG monitoring. In particular, when worn, the wearing side p of the adjustment member 210 can be closer to the skin, with a stronger pressure touch feeling, and it is more stable during measurement and will not cause deformation of the arm, which causes the first monitoring electrode 410 to be detached from the skin of the wrist, due to other hand movements.

Optionally, the device body 100 is provided with at least one first monitoring electrode 410, and the adjustment member 210 is provided with at least one second monitoring electrode 420. In the embodiment, the first monitoring electrode 410 is provided only on the wearing side p of the device body 100, which can free up space on the wearing side p of the wearable device and help further improve the user's wearing comfort.

Furthermore, the two straps are detachably connected to the device body 100. As illustrated in FIGS. 9-10, one end of each of the straps is provided with a locking protrusion 201, and each of both ends of the device body 100 is provided with a locking groove 103, and the locking groove 103 is engaged with the locking protrusion 201. The locking protrusion 201 provided on at least one of the straps is a conductive locking protrusion 201, electronic components on the strap are electrically connected to the conductive locking protrusion 201, the locking groove 103 corresponding to the conductive locking protrusion 201 is provided with a second conductive contact therein, the second conductive contact is electrically connected to the controller, and the conductive locking protrusion 201 can be in contact and conduct with the second conductive contact after being engaged with the locking groove 103.

In the embodiment, the strap and the device body 100 are connected in a detachable manner of the hook, so as to improve the maintenance convenience of the wearable device and save the maintenance and replacement cost of the wearable device. Of course, in other embodiments, the strap and the device body can also be connected through other detachable connection methods, such as plugging, screw locking, etc.

It will be understood that the color sensor 250, the Hall element 120, the pressure sensor 2 the monitoring electrode, etc. can be provided on the strap. These components provided on the strap need to be electrically connected to the controller of the device body 100. In the embodiment, the locking protrusion 201 of the strap provided with electronic components can be configured as a conductive locking protrusion 201 that is electrically connected to the electronic components through wires, and the hook of the device body 100 is provided with a second conductive contact electrically connected to the controller. After the strap is fixedly connected to the device body 100, the conductive locking protrusion 201 is in contact and conduct with the second conductive contact, and the electronic components on the strap can be electrically connected to the controller.

Furthermore, as illustrated in FIGS. 9-10, the second conductive contact is provided on a conductive pin 520 or a conductive elastic piece 510 in the locking groove 103, one end of the conductive pin 520 or the conductive elastic piece 510 is connected to a wall of the locking groove 103 and is electrically connected to the controller, and another end of the conductive pin or the conductive elastic piece is provided with the second conductive contact, to contact and conduct with the conductive locking protrusion 201. In this way, when the conductive locking protrusion 201 is engaged with the locking groove 103, the conductive locking protrusion 201 can contact the ends of the conductive elastic piece 510 and the conductive pin 520 and be connected with the second conductive contact, so as to realize the electrical connection between the controller and the electronic components on the strap. Of course, in other embodiments, the second conductive contact may also be disposed on an inner surface of the wall of the locking groove.

The above are only optional embodiments of the present disclosure, and are not intended to limit the patent scope of the present disclosure. Equivalent structural transformations made using the contents of the description and drawings the present of disclosure or direct/indirect applications in other related technical fields are all included in the protection scope of the present disclosure without departing from the inventive concept of the present disclosure.

WEARABLE DEVICE

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CPC

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