Adjustment mechanism, wristband and wearable device

Abstract

This application relates to an adjustment mechanism, a wristband, and a wearable device. The adjustment mechanism is used in the wristband, and the wristband includes a connection band. The adjustment mechanism includes a housing and an adjustment member. The adjustment member is configured to connect to an end of the connection band. The housing includes a bottom part, a first side part, and a second side part. The bottom part extends in a first direction. The first side part and the second side part are fastened to two opposite sides of the bottom part, and form a mounting space with the bottom part, a fastening part is disposed on a side that is of the bottom part and that faces the mounting space, the fastening part includes a plurality of grooves, and the plurality of grooves are arranged in the first direction. The adjustment member is located in the mounting space and is slidably connected to the first side part and the second side part. A clamping part is disposed on a side that is of the adjustment member and that faces the bottom part. When the adjustment member moves in the first direction relative to the housing, the clamping part is movable from one groove to another groove. According to embodiments of this application, the adjustment member is disposed to be slidably connected to the housing, and the clamping part fits the fastening part, so that a length of the wristband can be finely adjusted.

Description

[0001] This application claims priority to Chinese Patent Application No. 202310544389.5, filed with the China National Intellectual Property Administration on May 15, 2023 and entitled "ADJUSTMENT MECHANISM, WRISTBAND, AND WEARABLE DEVICE", which is incorporated herein by reference in its entirety.TECHNICAL FIELD

[0002] The present invention relates to the field of wearable technologies, and in particular, to an adjustment mechanism, a wristband, and a wearable device.BACKGROUND

[0003] Currently, lengths of wristbands of most wearable devices on the market are increased or decreased, to fit wrist sizes of wearers. For a common steel watchband, a length of the watchband is adjusted by increasing or decreasing a quantity of beads of the watchband, to adjust wearing tightness of the watchband.

[0004] However, the wrist size of the wearer changes with an environment. For example, the wrist size increases after exercise. In some scenarios, for example, when the wearable device is worn on a diving suit, a winter suit, a sweater, or the like, a length of a wristband of the wearable device needs to be adjusted anytime, to keep a wrist comfortable. Therefore, an adjustment mechanism needs to be designed, so that a wearer accurately adapt to the wrist size of the wearer by fine-tuning the wristband, to improve wearing comfort.SUMMARY

[0005] Embodiments of this application provide an adjustment mechanism, a wristband, and a wearable device. The adjustment mechanism in embodiments of this application can implement fine adjustment of a length of the wristband, so that a user can adjust the length of the wristband anytime and anywhere. This improves wearing experience of the user.

[0006] According to a first aspect, an embodiment of this application provides an adjustment mechanism. The adjustment mechanism is used in a wristband, and the wristband includes a connection band. The adjustment mechanism includes a housing and an adjustment member, and the adjustment member is configured to be connected to an end of the connection band. The housing includes a bottom part, a first side part, and a second side part, the bottom part extends in a first direction, the first side part and the second side part are fastened to two opposite sides of the bottom part, and form a mounting space with the bottom part, a fastening part is disposed on a side that is of the bottom part and that faces the mounting space, the fastening part includes a plurality of grooves, and the plurality of grooves are arranged in the first direction. The adjustment member is located in the mounting space, and is slidably connected to the first side part and the second side part, a clamping part is disposed on a side that is of the adjustment member and that faces the bottom part, and when the adjustment member moves in the first direction relative to the housing, the clamping part is movable from one groove to another groove. The adjustment member is located in the mounting space of the housing, so that a size of the adjustment mechanism is reduced. The adjustment member may be connected to the connection band of the wristband, and the adjustment mechanism is configured to adjust a length of the wristband. The adjustment member is slidably connected to the first side part and slidably connected to the second side part. This helps implement a stably slidable connection of the adjustment member on the housing. For example, each of the first side part and the second side part may be provided with a sliding slot, and a partial structure of the adjustment member is located in the sliding slot, to slide in the sliding slot.

[0007] In this embodiment of this application, the adjustment member can slide in the housing, the adjustment member is configured to be connected to the connection band of the wristband, and when the adjustment member slides, the connection band is driven to move. The connection band may be partially moved out of the housing or moved into the housing, to increase an overall length of the wristband or reduce an overall length of the wristband. Specifically, an end of the connection band is connected to the adjustment member, so that a portion of the connection band overlaps a portion of the housing. When the adjustment member drives the connection band to move out of the housing, an overlapping portion between the connection band and the housing gradually decreases, and the overall length of the wristband increases. When the adjustment member drives the connection band to move into the housing, an overlapping portion between the connection band and the housing gradually increases, and the overall length of the wristband decreases.

[0008] The clamping part fits the fastening part, so that an adjustment length of the wristband can be easily controlled. When the clamping part moves from one groove to another groove, a size of the wristband changes, to facilitate fine adjustment. In addition, when the length of the wristband does not need to be adjusted, the clamping part may be clamped in one of the grooves to limit a position of the adjustment member, so as to prevent the adjustment member from randomly sliding in the housing due to an accidental touch. This helps improve user experience. The fastening part is disposed on the bottom part of the housing, and the adjustment member is slidably connected to the first side part and the second side part that are of the housing, so that a slidable connection portion and a fine adjustment portion are respectively located at different positions of the housing. This helps fully utilize a space of the housing and implement miniaturization of the housing.

[0009] It may be understood that a length of the housing may be set to be small. When the length of the housing is large, the housing occupies a large proportion of the overall length of the wristband, and consequently, appearance beauty of the wristband is affected. In addition, because the housing is usually not bendable, wearing comfort of the user is affected by an excessively large length of the housing. In another implementation, a length of the housing may alternatively be set to be large, a length of the housing may be set to be large, and more grooves may be provided. In this way, a movable range of the adjustment member is increased, and a length range in which the user can perform fine adjustment is greater. It may be understood that a size of the housing may be set based on a requirement. This is not limited in this application.

[0010] In a possible implementation, the housing includes a first end and a second end that are disposed opposite to each other, the adjustment member is configured to increase a length of the wristband when sliding in a direction from the first end to the second end, and the adjustment member is configured to decrease the length of the wristband when sliding in a direction from the second end to the first end; and the groove includes a first inner wall and a second inner wall, the first inner wall is closer to the first end than the second inner wall, the clamping part is capable of sliding out of the groove from the first inner wall or the second inner wall, and an included angle between the first inner wall and a second direction is greater than an included angle between the second inner wall and the second direction, where the second direction is a thickness direction of the bottom part. That an included angle between the first inner wall and a second direction is greater than an included angle between the second inner wall and the second direction may be understood as that a gradient of the first inner wall is smaller than a gradient of the second inner wall. It is easy for the clamping part to move out of the groove to the first end along the first inner wall, and it is uneasy for the clamping part to move out of the groove to the second end along the second inner wall. Different degrees of difficulty in moving to different ends are set, to help improve user experience. It may be understood that, in this embodiment of this application, a movement range of the adjustment member is an area in which the plurality of grooves are located. The direction from the first end to the second end or the direction from the second end to the first end merely indicates a direction, and does not mean that the adjustment member can move to a position of the first end or the second end.

[0011] In another implementation, the included angle between the first inner wall and the second direction may alternatively be set to be less than or equal to the included angle between the second inner wall and the second direction. A specific structure of the groove is not limited in embodiments of this application.

[0012] In a possible implementation, the adjustment member includes a sliding part, a button, and a locker, the sliding part is slidably connected to the housing, the locker includes the clamping part, the locker is inserted into the sliding part, the clamping part is exposed from the sliding part, one end of the button extends into the sliding part and is inserted into the locker, the other end of the button is exposed from the sliding part, and when the button moves relative to the sliding part, the locker is away from the fastening part or close to the fastening part. The fastening part limits movement of the clamping part, and limits sliding of the sliding part. The clamping part of the locker is moved out of the fastening part by operating the button, and the clamping part can move from one groove to another groove. This helps move the sliding part based on a requirement to adjust the length of the wristband.

[0013] In a possible implementation, the button is slidably connected to the sliding part, and a sliding direction is parallel to the first direction. A moving direction of the button is consistent with a sliding direction of the adjustment member. In a process of operating the button to move the clamping part out of the fastening part, the adjustment member can also be pushed to move. In this way, an operation is simple, and conforms to an operation habit of the user. This helps improve user experience.

[0014] In a possible implementation, an inclined surface is disposed at the end that is of the button and that is inserted into the locker, the inclined surface is disposed away from the clamping part and is disposed at an included angle with the second direction, the inclined surface abuts against the locker, and the second direction is the thickness direction of the bottom part. It may be understood that the inner wall on which the locker fits the button is also disposed in an inclined manner, to fit the inclined surface. The button fits the locker through the inclined surface. When the button is operated, the button is pushed in the sliding direction of the adjustment member, and the locker slides in a direction of the inclined surface and moves in a direction away from the groove. When the button is operated, the clamping part can be moved out of the groove with a small force.

[0015] In a possible implementation, the sliding part includes a first space and a second space that communicate with each other, the locker is located in the first space, the end that is of the button and that is inserted into the locker extends out of the locker and extends into the second space, and the button is joined to an inner wall of the second space. When a size of the inclined surface is large, the end that is of the button and that is inserted into the locker may extend out of the locker, that is, the inclined surface may extend out of the locker. A contact area between the inclined surface and the locker is large, so that fitting is more stable. In addition, when a small size of the inclined surface is avoided, the inclined surface is stuck with the inner wall of the first space, and consequently, the button cannot be pressed. The button is joined to the inner wall of the second space, so that both ends of the button are supported by the sliding part, and the button is more stable when the button is operated.

[0016] In a possible implementation, the adjustment member further includes a first elastic member, and the first elastic member is elastically connected between a side that is of the locker and that is away from the fastening part and the sliding part. The first elastic member may be a mechanical part having an elastic deformation capability, like a spring. When the user operates the button to drive the locker to move away from the fastening part, the first elastic member is compressed, and the locker is subject to an elastic force toward the fastening part. When the user does not press the button, the elastic force applied to the locker makes the locker move toward the fastening part. Disposing the first elastic member helps implement movement of the locker. A quantity of first elastic members may be one, two, three, or the like. The quantity of first elastic members is not limited in this application.

[0017] In a possible implementation, the adjustment member further includes a second elastic member, the second elastic member is elastically connected between the button and the sliding part, and the second elastic member is extendable or retractable in the first direction. The second elastic member may be a mechanical part having an elastic deformation capability, like a spring. When the user operates the button to drive the locker to move, the second elastic member is compressed, and the button is subject to an elastic force of the second elastic member. The elastic force of the second elastic member is opposite to a movement direction of the button. Disposing the second elastic member helps implement movement of the button. A quantity of second elastic members may be one, two, three, or the like. The quantity of second elastic members is not limited in this application.

[0018] In a possible implementation, the button includes an operation part, a fitting part, a first support part, and a second support part, the first support part, the fitting part, and the second support part are sequentially spaced from each other and fastened to a same side of the operation part, and the second elastic member is located on the first support part or the second support part. The locker includes a first segment, a second segment, and a third segment that are sequentially fastened to each other, the clamping part is located on a side that is of the first segment, the second segment, or the third segment and that faces the bottom part, and the first elastic member is located on the first segment or the third segment. The fitting part is inserted into the second segment, the first segment is located between the first support part and the fitting part, and the third segment is located between the fitting part and the second support part. In this embodiment of this application, the structure of the button fits the structure of the locker, so that the structure is more compact and the force is balanced, and miniaturization of the adjustment member is facilitated.

[0019] In a possible implementation, the adjustment member further includes a first limiting pin, the sliding part is provided with a limiting hole, the first limiting pin passes through a connection hole of the button and the limiting hole, and the first limiting pin is movable in the limiting hole. The first limiting pin can move in the first limiting hole, to prevent the button from being detached from the sliding part, so that the button can move relative to the sliding part. The first limiting hole limits movement of the button in the sliding part to a specific range. There may be two first limiting holes, and there may also be two corresponding first limiting pins. The two first limiting holes may be symmetrically distributed on the sliding part, to facilitate stable movement of the button.

[0020] In a possible implementation, the adjustment member further includes a second limiting pin, the housing is provided with a limiting groove, the limiting groove extends in the first direction, the second limiting pin passes through a connection hole of the sliding part and is located in the limiting groove, and the second limiting pin is movable in the limiting groove. The limiting groove is configured to limit sliding of the sliding part, to help prevent the sliding part from detaching from the housing in a sliding process. The limiting groove may be located on the bottom part of the housing. There may be two limiting grooves, and correspondingly, there may also be two second limiting pins. The two limiting grooves may be distributed on two opposite sides of the groove. When there are two limiting grooves, stable limiting is facilitated in a sliding process of the sliding part.

[0021] In another implementation, there may alternatively be one limiting groove. The grooves may be divided into two columns, the two columns of grooves are spaced away from each other, and the limiting groove is located between two adjacent columns of grooves, so that the limiting groove is located in the middle of the bottom part. This facilitates stable limiting in the sliding process of the sliding part.

[0022] In a possible implementation, the sliding part includes a main part, a first connection part, and a second connection part, the first connection part and the second connection part are fastened to two opposite sides of the main part, a portion of the button and a portion of the locker are located in the main part, the first connection part is slidably connected to the first side part, the second connection part is slidably connected to the second side part, and the first connection part and the second connection part are configured to be connected to the connection band of the wristband. The first connection part is connected to the connection band, the second connection part is connected to the connection band, and the sliding part can drive the connection band to move.

[0023] According to a second aspect, this application provides a wristband, including a connection band and the adjustment mechanism according to any one of the foregoing implementations. An end of the connection band is connected to the adjustment member of the adjustment mechanism. The connection band may be made of a material like a soft adhesive tape, a metal belt, a belt, or a woven belt. A material of the connection band is not limited in this application. The adjustment mechanism can drive the connection band to move, to adjust an overall length size of the wristband, so as to adapt to wearing requirements of the user in different scenarios. This improves user experience.

[0024] In a possible implementation, the wristband includes an opening and closing mechanism, the opening and closing mechanism is connected to an end of the connection band, the opening and closing mechanism is connected to the housing of the adjustment mechanism, and the opening and closing mechanism is configured to open or close the wristband. The opening and closing mechanism may be a butterfly buckle or another mechanism. The opening and closing mechanism and the adjustment mechanism may share the housing of the adjustment mechanism, to help reduce costs. In addition, in comparison with a case in which the opening and closing mechanism and the adjustment mechanism are separately provided with a housing, appearance beauty and wearing comfort of the wristband can be improved.

[0025] In a possible implementation, the opening and closing mechanism includes a connector, a first extension member, a second extension member, and a snap, the connector is rotatably connected to the connection band of the wristband, one end of the first extension member is fastened to the connector, the other end of the first extension member is rotatably connected to the second extension member, and the second extension member is rotatably connected to the housing.

[0026] According to a third aspect, this application provides a wearable device, including a watch body and the wristband according to any one of the foregoing implementations. The wristband is connected to the watch body, and the watch body is configured to display time, or configured to monitor health data, or configured to monitor exercise data, or configured to monitor environmental data. The watch body is connected to the wristband to implement wearing of the device. The watch body may implement time display, timing, time reporting, or the like. Alternatively, the watch body may continuously monitor a physical condition of a user, like a heart rate, blood pressure, a body temperature, and blood oxygen. Alternatively, the watch body may monitor a motion status of a user, like a quantity of steps, an acceleration, and an angle. Alternatively, the watch body may monitor environmental data such as light, a temperature, humidity, and radiation.BRIEF DESCRIPTION OF DRAWINGS

[0027] To describe the technical solutions in embodiments of the present invention or in the background more clearly, the following briefly describes the accompanying drawings for describing embodiments of the present invention or the background. FIG. 1 is a diagram of a structure of a wearable device according to an implementation of this application; FIG. 2 is a diagram of a structure of a wristband shown in FIG. 1; FIG. 3 is a diagram of a structure of the wristband shown in FIG. 2 from another perspective; FIG. 4 is a diagram of an exploded structure of the wristband shown in FIG. 3; FIG. 5 is a diagram of a structure of an adjustment mechanism of the wristband shown in FIG. 4; FIG. 6 is a diagram of a structure of a housing of the adjustment mechanism shown in FIG. 5; FIG. 7 is a diagram of a structure of an adjustment member of the adjustment mechanism shown in FIG. 5; FIG. 8 is a diagram of an exploded structure of the adjustment member shown in FIG. 7; FIG. 9 is a diagram of a structure of the adjustment member shown in FIG. 8 from another perspective; FIG. 10 is a diagram of a structure of the adjustment member shown in FIG. 9 in another state; FIG. 11 is a diagram of a partial structure of a sectional view of the wristband shown in FIG. 3 along L-L; FIG. 12 is a diagram of a three-dimensional structure of the wristband shown in FIG. 3 after a portion of the wristband is removed along F-F; FIG. 13 is a diagram of an exploded structure of the wristband shown in FIG. 3; FIG. 14 is a diagram of another exploded structure of the wristband shown in FIG. 3; FIG. 15 is a diagram of a structure of the wristband shown in FIG. 14 from another perspective; FIG. 16 is another diagram of a structure of the wristband shown in FIG. 1; FIG. 17 is a diagram of a structure of an adjustment member of the wristband shown in FIG. 16; FIG. 18 is a sectional view of the wristband shown in FIG. 16 along X1-X1; and FIG. 19 is a sectional view of the wristband shown in FIG. 16 along X2-X2. DESCRIPTION OF EMBODIMENTS

[0028] The following clearly and completely describes the technical solutions in embodiments of this application with reference to the accompanying drawings in embodiments of this application. It is clear that the described embodiments are some but not all of embodiments of this application. All other embodiments obtained by a person of ordinary skill in the art based on embodiments of this application without creative efforts shall fall within the protection scope of this application.

[0029] FIG. 1 is a diagram of a structure of a wearable device 100. The wearable device 100 includes a watch body 10 and a wristband 20, and the wristband 20 is connected to the watch body 10. For example, the wristband 20 may be rotatably connected to the watch body 10 through a pin shaft (not shown in FIG. 1), the pin shaft is connected to the watch body 10, the wristband 20 is rotatably connected to the pin shaft, and the wristband 20 can rotate relative to the watch body 10. The wristband 20 and the watch body 10 may be rotated to any angle. In another implementation, the wristband 20 may alternatively be fastened to the watch body 10. This is not limited in this application. The wristband 20 may be bent into an annular structure and worn on a wrist, an arm, or another part, or the wristband 20 of the annular structure may be removed from the wrist, to implement a wearable function.

[0030] The watch body 10 may be configured to display time, or may be configured to monitor health data, or may be configured to monitor exercise data, or may be configured to monitor environmental data, or the like. The watch body 10 is configured to implement a corresponding function of the wearable device 100. For example, the wearable device 100 may be a wearable watch, and may implement functions such as time display, timing, or time reporting. A physiological sensor may be disposed in the watch body 10 to continuously detect vital signs of a user, such as a heart rate, blood pressure, a body temperature, and blood oxygen. Data of a physical condition of the user may be obtained by continuously detecting these vital signs, and corresponding processing is performed when necessary. A motion sensor may be disposed in the watch body 10 to detect a motion status of the user, for example, a quantity of steps, an acceleration, and an angle. By analyzing motion data of the user, information such as a motion intensity and consumed calories that are of the user may be learned, and a healthier workout plan may be recommended. An environment sensor may be disposed in the watch body 10 to detect environment data such as light, a temperature, humidity, and radiation. By analyzing environment information, an environment in which the user is located can be understood, and corresponding adjustment can be made, for example, light-proof glasses are recommended, and warming is added, to provide the user with a more suitable life experience.

[0031] In this embodiment of this application, an example in which the wearable device 100 is a wearable watch is used for description. The wearable watch may be a mechanical watch, an electronic watch, a quartz watch, or the like. The wearable device 100 shown in FIG. 1 is merely an example. The watch body 10 may be circular, square, or the like. A size and a shape of the wristband 20 may be set based on a requirement. A specific structure of the wearable device 100 is not limited in embodiments of this application.

[0032] In a process of using the wearable device 100, based on a requirement of a wearer, a length of the wristband 20 usually needs to be increased or decreased via a dedicated tool, to fit a wrist size of the wearer. The wrist size of the wearer changes with an environment, for example, the wrist size increases after exercise. In some scenarios, for example, when the wearable device 100 is worn on a diving suit, a winter suit, a sweater, or the like, the length of the wristband 20 of the wearable device 100 needs to be adjusted anytime, to maintain comfort of a wrist. Embodiments of this application provide an adjustment mechanism, to finely adjust a size of the wristband 20 anytime and anywhere, so as to precisely fit a wrist size of a wearer, and improve wearing comfort.

[0033] As shown in FIG. 1, FIG. 2, and FIG. 3, FIG. 2 is a diagram of a structure of the wristband 20 shown in FIG. 1, FIG. 3 is a diagram of a structure of the wristband 20 shown in FIG. 2 from another perspective, FIG. 2 shows a perspective at a side that is of the wristband 20 and that is away from a wrist, FIG. 3 shows a perspective at a side that is of the wristband 20 and that faces a wrist.

[0034] The wristband 20 may include a connection band 21 and an adjustment mechanism 22. The connection band 21 may include a first connection band 211 and a second connection band 212. No other mechanical part may be disposed between the first connection band 211 and the second connection band 212. There is no gap between the first connection band 211 and the second connection band 212, and the first connection band 211 and the second connection band 212 are in contact with and connected to each other. The watch body 10 may alternatively be disposed between the first connection band 211 and the second connection band 212. In this embodiment of this application, an example in which the watch body 10 is disposed between the first connection band 211 and the second connection band 212 is used for description. One end of the first connection band 211 may be connected to the adjustment mechanism 22, the other end of the first connection band 211 may be connected to the watch body 10, one end of the second connection band 212 may be connected to the adjustment mechanism 22, and the other end of the second connection band 212 may be connected to the watch body 10. The first connection band 211 and the second connection band 212 may be connected to the watch body 10 and the adjustment mechanism 22 through a rotatable connection, fastening, or the like. This is not limited in this application.

[0035] It may be understood that the first connection band 211 and the second connection band 212 may be made of a material like a soft adhesive tape, a metal belt, a belt, or a woven belt. The material of the first connection band 211 and the second connection band 212 is not limited in this application.

[0036] As shown in FIG. 4, FIG. 5, and FIG. 6, FIG. 4 is a diagram of an exploded structure of the wristband 20 shown in FIG. 3, FIG. 5 is a diagram of a structure of the adjustment mechanism 22 of the wristband shown in FIG. 4, and FIG. 6 is a diagram of a structure of a housing 23 of the adjustment mechanism shown in FIG. 5.

[0037] The adjustment mechanism 22 is used in the wristband 20. The adjustment mechanism 22 can drive the first connection band 211 or the second connection band 212 to move (in this embodiment of this application, an example in which the adjustment mechanism 22 can drive the second connection band 212 to move is used for description), so as to adjust an overall length of the wristband 20, and meet wearing requirements of a user in different scenarios. This improves user experience.

[0038] The adjustment mechanism 22 may include the housing 23 and the adjustment member 24. The housing 23 may be connected to an end of the first connection band 211, and the adjustment member 24 may be connected to an end of the second connection band 212. The adjustment member 24 is slidably connected to the housing 23, and the adjustment member 24 can slide in the housing 23.

[0039] The housing 23 may include a bottom part 231, a first side part 232, and a second side part 233. The bottom part 231 extends in a first direction A1, and the first side part 232 and the second side part 233 are fastened to two opposite sides of the bottom part 231. A mounting space 230 of the housing 23 is jointly enclosed by the bottom part 231, the first side part 232, and the second side part 233. The housing 23 may be of an integrally formed structure with high structural strength and good reliability. Alternatively, the housing 23 may be of a split structure, and the bottom part 231, the first side part 232, and the second side part 233 are connected to form an integral structure through bonding, welding, or the like. The housing 23 is provided with a first end 234 and a second end 235 that are disposed opposite to each other, and the first end 234 and the second end 235 are distributed in the first direction A1.

[0040] A fastening part 2311 may be disposed on a side that is of the bottom part 231 and that faces the mounting space 230. The fastening part 2311 may include a plurality of grooves 2312, and there are at least two grooves 2312. For example, a quantity of grooves 2312 may be two, three, four, five, or the like. The quantity of grooves 2312 is not limited in this application. The plurality of grooves 2312 may be sequentially arranged in the first direction A1.

[0041] The first side part 232 is provided with a first sliding slot 2321, and the second side part 233 is provided with a second sliding slot 2331. The first sliding slot 2321 may extend in the first direction A1, and the second sliding slot 2331 may extend in the first direction A1.

[0042] As shown in FIG. 5, FIG. 6, and FIG. 7, FIG. 7 is a diagram of a structure of the adjustment member 24 of the adjustment mechanism shown in FIG. 5. A clamping part 271 is disposed on a side that is of the adjustment member 24 and that faces the bottom part 231, and the clamping part 271 is a protrusion structure. The adjustment member 24 is mounted in the mounting space 230 of the housing 23 and is slidably connected to the housing 23. For example, one side of the adjustment member 24 is located in the first sliding slot 2321, and the other side of the adjustment member 24 is located in the second sliding slot 2331, to implement a slidable connection between the adjustment member 24 and the first side part 232 and a slidable connection between the adjustment member 24 and the second side part 233. This facilitates stable sliding of the adjustment member 24 in the housing 23. The adjustment member 24 is mounted in the mounting space 230, to help reduce a size of the adjustment mechanism 22 and implement miniaturization of the adjustment mechanism 22.

[0043] The clamping part 271 may fit the fastening part 2311 to fit adjustment of the adjustment member 24. It may be understood that the clamping part 271 may be at least partially clamped in the groove 2312. When the adjustment member 24 moves relative to the housing 23 in the first direction A1, the clamping part 271 can move from one groove 2312 to another groove 2312.

[0044] In some embodiments, the adjustment member 24 may include a button 26, and the button 26 may fit the clamping part 271, so that the clamping part 271 moves out of the groove 2312 or moves into the groove 2312.

[0045] In this embodiment of this application, the adjustment member 24 may slide in the housing 23, and the adjustment member 24 may move back and forth in the first direction A1. The second connection band 212 may be rotatably connected to the adjustment member 24, and a portion of the second connection band 212 overlaps the housing 23. In other words, the portion of the second connection band 212 is located in the mounting space 230 of the housing 23. When the adjustment member 24 drives the second connection band 212 to move out of the housing 23 (that is, the adjustment member 24 slides in a direction from the first end 234 to the second end 235), an overlapping portion between the second connection band 212 and the housing 23 gradually decreases, and an overall length of the wristband 20 increases. When the adjustment member 24 drives the second connection band 212 to move into the housing 23 (that is, the adjustment member 24 slides in a direction from the second end 235 to the first end 234), an overlapping portion between the second connection band 212 and the housing 23 gradually increases, and an overall length of the wristband 20 decreases. It may be understood that a sliding range of the adjustment member 24 is an area in which the plurality of grooves 2312 are located.

[0046] In this embodiment of this application, in a sliding process of the adjustment member 24 in the housing 23, the clamping part 271 can move from one groove 2312 to another groove 2312, and fitting between the clamping part 271 and the fastening part 2311 helps control an adjustment length of the wristband 20. When the clamping part 271 moves from one groove 2312 to another groove 2312, a size of the wristband 20 changes, to implement fine adjustment. A size of the fine adjustment is a distance from one groove 2312 to the another groove 2312. In addition, when the length of the wristband 20 does not need to be adjusted, the clamping part 271 is clamped in one of the grooves 2312, and the clamping part 271 may be configured to limit a position of the adjustment member 24, to prevent the adjustment member 24 from randomly sliding in the housing 23 due to an accidental touch. The fastening part 2311 is disposed on the bottom part 231 of the housing 23, and the adjustment member 24 is slidably connected to the first side part 232 and the second side part 233 that are of the housing 23, so that a slidable connection portion and a fine adjustment portion are respectively located at different positions of the housing 23. This helps fully utilize a space of the housing 23, and implement miniaturization of the housing 23.

[0047] As shown in FIG. 5 and FIG. 8, FIG. 8 is a diagram of an exploded structure of the adjustment member 24 shown in FIG. 7. The adjustment member 24 may include a sliding part 25, a button 26, and a locker 27. The sliding part 25 is configured to be slidably connected to the housing 23, the button 26 is configured to be operated by a user to enable the sliding part 25 to slide, and the locker 27 is configured to fit the groove 2312 of the housing 23, to implement fine adjustment of a size of the wristband 20.

[0048] The sliding part 25 may include a main part 251, a first connection part 252, and a second connection part 253. The first connection part 252 and the second connection part 253 are fastened to two opposite sides of the main part 251. The first connection part 252 and the second connection part 253 protrude from the main part 251. The first connection part 252 is slidably connected to the first side part 232, the first connection part 252 may be located in the first sliding slot 2321, and the first connection part 252 can slide in the first sliding slot 2321. The second connection part 253 is slidably connected to the second side part 233, the second connection part 253 may be located in the second sliding slot 2331, and the second connection part 253 can slide in the second sliding slot 2331, so that the sliding part 25 is slidably connected to the housing 23. It may be understood that the first sliding slot 2321 may limit a movement direction of the sliding part 25 through the first connection part 252, and the second sliding slot 2331 may limit a movement direction of the sliding part 25 through the second connection part 253.

[0049] The sliding part 25 may be of an integrally formed structure with high structural strength and good reliability. Alternatively, the sliding part 25 may be of a split structure, and the main part 251, the first connection part 252, and the second connection part 253 are connected to form an integrated structure through bonding, welding, or the like.

[0050] Refer to FIG. 4 and FIG. 8. The first connection part 252 is provided with a first connection hole 2521, and the second connection part 253 is provided with a second connection hole 2531. The second connection band 212 may be rotatably connected to the sliding part 25 through a first pin shaft 2121. For example, the second connection band 212 may be provided with a through hole 2122, the first pin shaft 2121 passes through the through hole 2122, one end of the first pin shaft 2121 is connected to the first connection hole 2521 of the first connection part 252, and the other end of the first pin shaft 2121 is connected to the second connection hole 2531 of the second connection part 253. The second connection band 212 may rotate around the first pin shaft 2121, to implement a rotatable connection between the second connection band 212 and the adjustment member 24. In another implementation, the first connection part 252 and the second connection part 253 may alternatively be fastened to the second connection band 212. This is not limited in this application.

[0051] Refer to FIG. 8. The button 26 may include an operation part 261, a fitting part 262, a first support part 263, and a second support part 264. The operation part 261 is configured to perform a user operation, and the user controls the button 26 through the operation part 261. The fitting part 262, the first support part 263, and the second support part 264 are spaced from each other and are disposed on a same side of the operation part 261. The first support part 263 and the second support part 264 are located on two opposite sides of the fitting part 262. The fitting part 262 is located at an end that is of the button 26 and that is inserted into the locker 27, and a side that is of the fitting part 262 and that is away from the operation part 261 is provided with an inclined surface 2621.

[0052] It may be understood that the operation part 261, the fitting part 262, the first support part 263, and the second support part 264 may be of an integrally formed structure with high strength and good reliability, or may be of a split structure and fastened through welding, bonding, or the like.

[0053] FIG. 9 is a diagram of a structure of the adjustment member 24 shown in FIG. 8 from another perspective. In some embodiments, a surface 2611 that is of the operation part 261 and that is away from the sliding part 25 is provided with a first groove 2612. There may be two first grooves 2612, and the two first grooves 2612 are spaced from each other. Providing the first groove 2612 can improve an operation feeling of the user.

[0054] It may be understood that, in some embodiments, the button 26 may be not provided with the first support part 263 or the second support part 264. A specific structure of the button 26 is not limited in this application.

[0055] Refer to FIG. 8 and FIG. 9. The locker 27 may include the clamping part 271 and a first segment 274, a second segment 275, and a third segment 276 that are sequentially fastened to each other, the clamping part 271 is located on a side that is of the first segment 274, the second segment 275, or the third segment 276 and that faces the bottom part 231. It may be understood that the clamping part 271 may be located on a side that is of any one of the first segment 274, the second segment 275, and the third segment 276 and that faces the bottom part 231, or a side that is of any two of the first segment 274, the second segment 275, and the third segment 276 and that faces the bottom part 231, or a side that is of the three of the first segment 274, the second segment 275, and the third segment 276 and that faces the bottom part 231. A greater size of the clamping part 271 indicates more stable movement. The second segment 275 is provided with a fitting space 273, and an inner wall 2731 of the fitting space 273 formed through enclosing is disposed in an inclined manner. The clamping part 271, the first segment 274, the second segment 275, and the third segment 276 may be of an integrally formed structure with high strength and good reliability, or may be of a split structure and fastened to each other through welding, bonding, or the like.

[0056] Refer to FIG. 8, FIG. 9, FIG. 10, and FIG. 11. FIG. 10 is a diagram of a structure of the adjustment member 24 shown in FIG. 9 in another state. The button 26 and the locker 27 in FIG. 10 are combined together, FIG. 11 is a diagram of a partial structure of a sectional view of the wristband 20 shown in FIG. 3 along L-L. In FIG. 11, a structure at H1 and a structure at H2 are enlarged. To see the structure of the wristband 20 more clearly, a cross-sectional line is not shown in FIG. 11.

[0057] In some embodiments, the sliding part 25 may be provided with an accommodating space 2511 and an opening 2513. The accommodating space 2511 is a hollow space, and the opening 2513 is located on the bottom part of the main part 251.

[0058] The locker 27 is inserted into the sliding part 25, a main body part (namely, the first segment 274, the second segment 275, and the third segment 276) of the locker 27 is located in the accommodating space 2511, and the clamping part 271 of the locker 27 passes through the opening 2513 to expose the sliding part 25. The sliding part 25 is exposed from the operation part 261 of the button 26, and the fitting part 262, the first support part 263, and the second support part 264 extend into the accommodating space 2511 of the sliding part 25.

[0059] The fitting part 262 of the button 26 may extend into the fitting space 273 of the locker 27, and is inserted into the locker 27. The first segment 274 is located between the first support part 263 and the fitting part 262, and the third segment 276 is located between the fitting part 262 and the second support part 264. The button 26 fits the locker 27 in structure, so that the structure is more compact, force applied to the structure is balanced, and miniaturization of the adjustment member 24 is facilitated.

[0060] It may be understood that a size of the fitting space 273 in a second direction A2 (the second direction A2 is a thickness direction of the bottom part 231) is greater than a size of the fitting part 262 in the second direction A2. This facilitates movement of the locker 27 in the second direction A2, and avoids a case in which the bottom part of the fitting part 262 restricts movement of the locker 27 due to a small size of the fitting space 273 in the second direction A2.

[0061] The inclined surface 2621 of the fitting part 262 is disposed away from the clamping part 271 and is disposed at an included angle with the second direction A2. The inclined surface 2621 of the fitting part 262 may abut against the inner wall 2731 of the locker 27. It may be understood that the button 26 fits the inner wall 2731 of the locker 27 through the inclined surface 2621. When the button 26 is operated, the locker 27 can move upward with a small force, to drive the clamping part 271 to move out of the groove 2312. The inclined surface 2621 abuts against the inner wall 2731 of the locker 27. When the button 26 moves relative to the sliding part 25 in the first direction A1, the locker 27 moves away from the groove 2312 or close to the groove 2312. The clamping part 271 of the locker 27 is located in the groove 2312, and restricts sliding of the adjustment member 24. In an adjustment process, the button 26 may be pushed to the second end 235, the locker 27 slides along the inclined surface and moves in a direction away from the groove 2312, the clamping part 271 moves out of the groove 2312, and the adjustment member 24 can slide toward the second end 235.

[0062] Refer to FIG. 9, FIG. 10, and FIG. 11. In some embodiments, the inclined surface 2621 may extend out of a side that is of the locker 27 and that is away from the operation part 261. The accommodating space 2511 of the sliding part 25 includes a first space 2511-1 and a second space 2511-2 that communicate with each other. The locker 27 is located in the first space 2511-1. One end that is of the button 26 and that is inserted into the locker 27 extends out of the locker 27, and extends into the second space 2511-2, and the fitting part 262 of the button 26 is joined to the inner wall 254 of the second space 2511-2. When a size of the inclined surface 2621 is large, the inclined surface 2621 may extend out of the side that is of the locker 27 and that is away from the operation part 261. A large contact area between the inclined surface 2621 and the locker 27 makes fitting be more stable, and avoids a case in which the button 26 cannot be pressed due to blocking between the inclined surface 2621 and the inner wall of the first space 2511-1. It may be understood that an end at which the inclined surface 2621 is located extends out of the side that is of the locker 27 and that is away from the operation part 261, and may be joined to the inner wall 254 of the second space 2511-2, so that both ends of the button 26 are supported by the sliding part 25, and an operation of the button 26 is more stable.

[0063] The button 26 can drive the locker 27 to move away from the groove 2312, so that the clamping part 271 moves out of the groove 2312. The button 26 is slidably connected to the sliding part 25, and a sliding direction is parallel to the first direction A1. A moving direction of the button 26 is consistent with a sliding direction of the adjustment member 24. In a process of operating the button 26 to move the clamping part 271 out of the groove 2312, the adjustment member 24 can also be pushed to move. In this way, an operation is simple, and conforms to an operation habit of the user. This helps improve user experience. The groove 2312 restricts movement of the locker 27, and restricts sliding of the sliding part 25. The clamping part 271 of the locker 27 is moved out of the groove 2312 by operating the button 26. This helps move the sliding part 25 as required to adjust the length of the wristband 20. For example, when the sliding part 25 needs to be moved, the user may operate the operation part 261 of the button 26. The operation part 261 acts on the locker 27, and the inclined surface 2621 of the fitting part 262 fits the inner wall 2731 of the locker 27, so that the clamping part 271 of the locker 27 moves upward, and the clamping part 271 moves out of the groove 2312. After a required length is reached, the user releases the button 26, so that the button 26 no longer applies an upward force to the locker 27, the locker 27 moves downward, and the clamping part 271 is clamped in one of the grooves 2312.

[0064] Refer to FIG. 11. In some embodiments, the groove 2312 includes a first inner wall 2313 and a second inner wall 2314, and the first inner wall 2313 is closer to the first end 234 than the second inner wall 2314. The clamping part 271 can slide out of the groove 2312 from the first inner wall 2313 or the second inner wall 2314. An included angle V1 between the first inner wall 2313 and the second direction A2 is greater than an included angle V2 between the second inner wall 2314 and the second direction A2. That an included angle V1 between the first inner wall 2313 and the second direction A2 is greater than an included angle V1 between the second inner wall 2314 and the second direction A2 may be understood as that a gradient of the first inner wall 2313 is small relative to a gradient of the second inner wall 2314. It is easy for the clamping part 271 to move out of the groove 2312 from the first end 234 along the first inner wall 2313, and it is uneasy for the clamping part 271 to move out of the groove 2312 from the second end 235 along the second inner wall 2314. Different degrees of difficulty in moving to different ends are set, to help improve user experience.

[0065] When the adjustment member 24 slides toward the second end 235 to increase a length of the wristband 20, because the gradient of the second inner wall 2314 is large, it is difficult for the clamping part 271 to move toward the second end 235 along the second inner wall 2314, the operation part 261 of the button 26 needs to be pressed in a sliding direction, the button 26 applies an upward force to the locker 27, the clamping part 271 moves out of the groove 2312, and the clamping part 271 may move toward the second end 235, in other words, the adjustment member 24 may move toward the second end 235. When the adjustment member 24 slides toward the first end 234 to reduce the length of the wristband 20, because the gradient of the first inner wall 2313 is small, the clamping part 271 easily slides along the first inner wall 2313 to slide out of the groove 2312, the clamping part 271 moves toward the first end 234, and the button 26 does not need to be pressed, so that the second connection band 212 can be pushed to drive the adjustment member 24 to slide toward the first end 234.

[0066] In another implementation, the included angle V1 between the first inner wall 2313 and the second direction A2 may alternatively be set to be less than or equal to the included angle V2 between the second inner wall 2314 and the second direction A2. A specific structure of the groove 2312 is not limited in embodiments of this application.

[0067] Refer to FIG. 11. A length of the housing 23 may be set to be small. For example, the length of the housing 23 may be less than a length of a second extension member 283 of an opening and closing mechanism 28 (a specific structure of the opening and closing mechanism 28 is described in detail later). When the length of the housing 23 is large, the housing 23 occupies a large proportion of the overall length of the wristband 20, so that appearance beauty of the wristband 20 is affected. In addition, because the housing 23 is not bendable, wearing comfort of the user is affected by an excessively long housing 23.

[0068] In another implementation, a length of the housing 23 may alternatively be set to be large. For example, the length of the housing 23 may be equal to a length of the second extension member 283 of the opening and closing mechanism 28. A length of the housing 23 is large, and more grooves 2312 may be provided. In this way, a movable range of the adjustment member 24 is increased, and a length range that can be finely adjusted by the user is larger. It may be understood that a size of the housing 23 may be set based on a requirement. This is not limited in this application.

[0069] As shown in FIG. 9, FIG. 10, and FIG. 11, the adjustment member 24 may further include a first elastic member 241, and the first elastic member 241 may be elastically connected between the sliding part 25 and a side that is of the locker 27 and that is away from the groove 2312. A quantity of first elastic members 241 may be one, two, three, or the like. The quantity of first elastic members 241 is not limited in this application. For example, there are two first elastic members 241. One first elastic member 241 is fastened to the first segment 274 of the locker 27, and the other first elastic member 241 is located on the third segment 276 of the locker 27.

[0070] The first elastic member 241 may be a mechanical part having an elastic deformation capability, like a spring. When the user operates the button 26 to drive the locker 27 to move away from the groove 2312, the first elastic member 241 is compressed, and the locker 27 is subject to an elastic force applied by the first elastic member 241 toward the groove 2312. When the user does not press the button 26, the elastic force applied by the first elastic member 241 to the locker 27 makes the locker 27 move toward the groove 2312. Disposing the first elastic member 241 helps implement movement of the locker 27.

[0071] The adjustment member 24 may further include a second elastic member 242. The second elastic member 242 may be elastically connected between the button 26 and the sliding part 25. The second elastic member 242 is extendable and retractable in a movement direction of the button 26. A quantity of second elastic members 242 may be one, two, three, or the like. The quantity of second elastic members 242 is not limited in this application. For example, there are two second elastic members 242. One second elastic member 242 is fastened to the first support part 263 of the button 26, and the other second elastic member 242 is fastened to the second support part 264 of the button 26.

[0072] The second elastic member 242 may be a mechanical part having an elastic deformation capability, like a spring. When the user operates the button 26 to drive the locker 27 to move, the second elastic member 242 is compressed, and the button 26 is subject to an elastic force of the second elastic member 242. The elastic force of the second elastic member 242 is opposite to a movement direction of the button 26. Disposing the second elastic member 242 helps implement movement of the button 26.

[0073] Refer to FIG. 7, FIG. 8, and FIG. 9. The sliding part 25 may be provided with a limiting hole 2512, the limiting hole 2512 is located on the bottom part of the main part 251, and there may be two limiting holes 2512. The adjustment member 24 may further include a first limiting pin 243. The first limiting pin 243 is exposed from the bottom part of the button 26, and the first limiting pin 243 passes through the connection hole 265 (referred to as a third connection hole 265 herein to distinguish from the first connection hole 2521 and the second connection hole 2531) of the button 26 and the limiting hole 2512 of the sliding part 25. When the button 26 is operated, the first limiting pin 243 can move in the limiting hole 2512. For example, there may be two first limiting pins 243. One first limiting pin 243 may be located on the first support part 263 of the button 26, and the other first limiting pin 243 may be located on the second support part 264 of the button 26. The first limiting pin 243 can move in the first limiting hole 2512, so that the button 26 can move relative to the sliding part 25. In addition, the first limiting hole 2512 limits movement of the button 26 in the sliding part 25 to a specific range, to help prevent the button 26 from being detached from the sliding part 25.

[0074] Refer to FIG. 6, FIG. 9, and FIG. 12. FIG. 12 is a diagram of a three-dimensional structure obtained after a portion of the wristband 20 shown in FIG. 3 is removed along F-F. In FIG. 12, a structure at H3 is enlarged. For a clearer schematic structure, FIG. 12 does not show a cross-sectional line. The sliding part 25 may be provided with a connection hole 2514 (referred to as a fourth connection hole 2514 herein to distinguish from the first connection hole 2521, the second connection hole 2531, and the third connection hole 265), and the fourth connection hole 2514 may penetrate the top part and the bottom part that are of the main part 251. There may be two fourth connection holes 2514. One fourth connection hole 2514 may be provided close to the first connection part 252, and the other fourth connection hole 2514 may be provided close to the second connection part 253. The adjustment member 24 may further include a second limiting pin 244. The housing 23 is provided with a limiting groove 236, and the limiting groove 236 extends in the first direction A1. The second limiting pin 244 passes through the fourth connection hole 2514 of the sliding part 25 and is located in the limiting groove 236, and the second limiting pin 244 can move in the limiting groove 236. The limiting groove 236 is configured to limit sliding of the sliding part 25, to help prevent the sliding part 25 from detaching from the housing 23 in a sliding process. The limiting groove 236 may be located on the bottom part 231 of the housing 23. There may be two limiting grooves 236, and correspondingly, there may also be two second limiting pins 244. The two limiting grooves 236 may be distributed on two opposite sides of the groove 2312. When there are two limiting grooves 236, stable limiting is facilitated in a sliding process of the sliding part 25.

[0075] In another implementation, there may alternatively be one limiting groove 236, the grooves 2312 may be divided into two columns, the two columns of grooves 2312 are spaced away from each other, and the limiting groove 236 is located between two adjacent columns of grooves 2312, so that the limiting groove 236 is located in the middle of the bottom part 231. This facilitates stable limiting in a sliding process of the sliding part 25.

[0076] With reference to FIG. 3, FIG. 13, FIG. 14, and FIG. 15, FIG. 13 is a diagram of an exploded structure of the wristband 20 shown in FIG. 3, FIG. 14 is a diagram of another exploded structure of the wristband 20 shown in FIG. 3, and FIG. 15 is a diagram of a structure of the wristband 20 shown in FIG. 14 from another perspective.

[0077] The wristband 20 may include the opening and closing mechanism 28, and the opening and closing mechanism 28 may include a connector 281, a first extension member 282, a second extension member 283, and a snap 284. The opening and closing mechanism 28 is connected to the housing 23 of the adjustment mechanism 22, and the opening and closing mechanism 28 is configured to open or close the wristband 20. The opening and closing mechanism 28 is connected to an end of the connection band 21. For example, the opening and closing mechanism 28 is connected to an end of the first connection band 211.

[0078] The connector 281 is provided with a mounting space. The first connection band 211 is located in the mounting space of the connector 281, and is rotatably connected to the connector 281 through the second pin shaft 285. The first connection band 211 may rotate relative to the connector 281. When the wristband 20 is snap-fitted, the connector 281 may be located at the first end 234 of the housing 23 and abut against the first end 234 of the housing 23.

[0079] The first extension member 282 includes a first portion 2821, a second portion 2822, and a third portion 2823. The first portion 2821 is fastened to the connector 281, and the second portion 2822 and the third portion 2823 are spaced away from each other and are both fastened to the first portion 2821. The first portion 2821 may be connected to the connector 281 through welding, clamping, or bonding. The first portion 2821 and the connector 281 may alternatively be of an integrally formed structure with high structural strength and good reliability. The first portion 2821 may have a large length, to overlap a portion of the first connection band 211. When the first connection band 211 is made of a material with large flexibility, for example, a belt, a connection portion between the first connection band 211 and the connector 281 is prone to bend and have a crease. The first portion 2821 is disposed to have a large length and overlaps the first connection band 211, to provide strength support for the first connection band 211. This avoids a crease on the connection portion between the first connection band 211 and the connector 281.

[0080] The second portion 2822 is provided with a first snap-fit part 2824 and a first hole 2825. The first snap-fit part 2824 is located at an end that is of the second portion 2822 and that is close to the first portion 2821, and the first hole 2825 is located at an end that is of the second portion 2822 and that is away from the first portion 2821. The third portion 2823 is provided with a second snap-fit part 2826 and a second hole 2827. The second snap-fit part 2826 is located at an end that is of the third portion 2823 and that is close to the first portion 2821, and the second hole 2827 is located at an end that is of the third portion 2823 and that is away from the first portion 2821.

[0081] The second extension member 283 includes a fifth portion 2831 and a sixth portion 2832 that are fastened to each other, the fifth portion 2831 is provided with a third hole 2833, and an end that is of the sixth portion 2832 and that is away from the fifth portion 2831 is provided with a fourth hole 2834.

[0082] The first extension member 282 is rotatably connected to the second extension member 283. For example, the sixth portion 2832 of the second extension member 283 is located between the second portion 2822 and the third portion 2823 that are of the first extension member 282, and the fifth portion 2831 of the second extension member 283 is located on a side that is of the first extension member 282 and that faces the bottom part 231 of the housing 23. The third pin shaft 286 passes through the first hole 2825, the fourth hole 2834, and the second hole 2827, to implement a rotatable connection between the first extension member 282 and the second extension member 283. The first extension member 282 can rotate around the third pin shaft 286 relative to the second extension member 283. In addition, because the first extension member 282 is fastened to the connector 281, the first extension member 282 can drive the connector 281 and the first connection band 211 to rotate in a rotation process.

[0083] The second extension member 283 is rotatably connected to the housing 23. For example, the housing 23 is provided with a rotation hole 238, and there may be two rotation holes 238. One rotation hole 238 is located on the first side part 232, and the other rotation hole 238 is located on the second side part 233. It may be understood that the rotation hole of the first side part 232 in the perspective in FIG. 13 is blocked and is not shown. The fourth pin shaft 287 passes through the rotation hole 238 of the first side part 232, the third hole 2833, and the rotation hole 238 of the second side part 233, to implement a rotatable connection between the second extension member 283 and the housing 23.

[0084] The snap 284 includes a mounting part 2841 and a locking part 2842 that are fastened to each other. The mounting part 2841 is located in an embedding space 237 of the housing 23, and the locking part 2842 at least partially extends out of the embedding space 237. There may be two snaps 284, and there may also be two corresponding embedding spaces 237. One embedding space 237 is located on the first side part 232 of the housing 23, and the other embedding space 237 is located on the second side part 233 of the housing 23.

[0085] When the wristband 20 is snap-fitted, the first snap-fit part 2824 of the first extension member 282 is locked with the locking part 2842 of the snap 284 (the first snap-fit part 2824 is provided with a lock hole 2828, the locking part 2842 is provided with a lap member 2843, and the lap member 2843 of the locking part 2842 is located in the lock hole 2828 of the first snap-fit part 2824), the first extension member 282 is fastened to the housing 23 through the snap 284, and the first extension member 282 cannot rotate relative to the second extension member 283. For locking between the second snap-fit part 2826 of the first extension member 282 and another snap 284, refer to locking between the first snap-fit part 2824 of the first extension member 282 and the snap 284. Details are not described herein again.

[0086] When the wristband 20 is opened, the snaps 284 are operated, so that the two snaps 284 move in a direction close to each other. The lap member 2843 of the locking part 2842 moves out of the lock hole 2828 of the first snap-fit part 2824, and a lap member 2843 of another locking part 2842 moves out of the locker of the second snap-fit part 2826, to unlock the first extension member 282 from the housing 23. The first extension member 282 can rotate relative to the second extension member 283, and it may be understood that, the first extension member 282 can drive the connector 281 and the first connection band 211 to rotate together. The second extension member 283 can rotate relative to the housing 23. The opening and closing mechanism 28 is opened, that is, the wristband 20 is opened. After the wristband 20 is opened, the user may wear a wearable device on a wrist, or may fine-tune the adjustment mechanism 22 to a proper size, and then wear a wearable device.

[0087] In some embodiments, an elastic member may be disposed between the mounting part 2841 of the snap 284 and an inner wall of the embedding space 237 of the housing 23. The elastic member can be compressed in a direction in which the snap 284 moves, and the two snaps 284 are pressed, so that when the two snaps 284 move in a direction close to each other, the elastic member can be compressed, and the snap 284 is subject to an elastic force opposite to a movement direction. When the snap 284 does not need to be pressed, the snap 284 can move to a preset position under an action of the elastic force.

[0088] The opening and closing mechanism 28 in this embodiment of this application may be a butterfly buckle structure. In another implementation, the opening and closing mechanism 28 may alternatively be opened and closed in another manner. A specific structure of the opening and closing mechanism 28 is not limited in this application.

[0089] It may be understood that, in this embodiment of this application, the opening and closing mechanism 28 and the adjustment mechanism 22 may share the housing 23 of the adjustment mechanism 22, to help reduce costs. In addition, in comparison with a case in which the opening and closing mechanism 28 and the adjustment mechanism 22 are separately provided with a housing, appearance beauty and wearing comfort of the wristband can be improved.

[0090] FIG. 16 is a diagram of another structure of the wristband 20 shown in FIG. 1. A difference between an opening and closing mechanism of the wristband 20 shown in FIG. 16 and the opening and closing mechanism shown in FIG. 13 lies in that a length of the first portion 2821 of the first extension member 282 of the opening and closing mechanism 28 shown in FIG. 16 may be small, and the first portion 2821 does not overlap the first connection band 211. When the first connection band 211 is made of a hard material like metal, a connection portion between the first connection band 211 and the connector 281 is not bent to have a crease, and a length of the first portion 2821 may be set to be small. For another structure of the opening and closing mechanism of the wristband 20 shown in FIG. 16, refer to the structure of the opening and closing mechanism shown in FIG. 13. Details are not described herein again.

[0091] FIG. 17 is a diagram of a structure of the adjustment member 24 of the wristband 20 shown in FIG. 16. A difference between the adjustment member 24 shown in FIG. 17 and the adjustment member 24 shown in FIG. 9 lies in that a surface 2611 that is of the operation part 261 of the button 26 of the adjustment member 24 shown in FIG. 17 and that is away from the sliding part 25 is smooth, and a second groove 2614 and an indication mark 2615 are disposed on a top surface 2613 of the operation part 261 of the button 26 of the adjustment member 24 shown in FIG. 17. There may be a plurality of second grooves 2614. Disposing the second groove 2614 increases an aesthetic appearance of the button 26, and disposing the indication mark 2615 indicates a sliding direction of the button 26. For another structure of the adjustment member 24 shown in FIG. 17, refer to the structure of the adjustment member 24 shown in FIG. 9. Details are not described herein again.

[0092] FIG. 18 is a sectional view of the wristband 20 shown in FIG. 16 along X1-X1. The second connection band 212 includes a first connection block 2123, a second connection block 2124, a third connection block 2125, a first operation button 2126, a first connection rod 2127, a third elastic member 2128, and a second connection rod 2129 that are sequentially arranged. The first connection block 2123, the second connection block 2124, and the third connection block 2125 are detachably connected through the first operation button 2126, the first connection rod 2127, the third elastic member 2128, and the second connection rod 2129. The first operation button 2126 may be fastened to the first connection rod 2127. The first connection rod 2127, the third elastic member 2128, and the second connection rod 2129 are sequentially arranged, one end of the first connection rod 2127 extends into the first connection block 2123, the other end of the first connection rod 2127 extends into the second connection block 2124 and abuts against the third elastic member 2128, and an end that is of the second connection rod 2129 and that is away from the third elastic member 2128 extends into the third connection block 2125.

[0093] It may be understood that, when the first operation button 2126 slides to a side on which the third connection block 2125 is located, the first operation button 2126 drives the first connection rod 2127 to slide to a side on which the third connection block 2125 is located, the first connection rod 2127 compresses the third elastic member 2128, and an end that is of the first connection rod 2127 and that is away from the third elastic member 2128 moves out of the first connection block 2123, to implement a detachable connection between the first connection block 2123 and the second connection block 2124. Then, an end that is of the second connection rod 2129 and that is away from the third elastic member 2128 moves out of the third connection block 2125, to implement a detachable connection between the first connection block 2123 and the third connection block 2125.

[0094] FIG. 19 is a sectional view of the wristband 20 shown in FIG. 16 along X2-X2. The second connection band 212 includes a fourth connection block 212-1, and the fourth connection block 212-1 includes a first block 212-2, a second block 212-3, and a third block 212-4 that are sequentially fastened to each other. The second connection band 212 further includes a second operation button 212-5, a third connection rod 212-6, a fourth elastic member 212-7, a fifth elastic member 212-8, a fourth connection rod 212-9, a sixth elastic member 212-10, and a seventh elastic member 212-11. The fourth elastic member 212-7 is sleeved on a periphery of the third connection rod 212-6, the fifth elastic member 212-8 is sleeved on a periphery of the fourth connection rod 212-9, and the sixth elastic member 212-10 and the seventh elastic member 212-11 are located at two opposite ends of the second operation button 212-5. One end of the second operation button 212-5 fits the third connection rod 212-6, the other end of the second operation button 212-5 fits the fourth connection rod 212-9, and the second operation button 212-5 controls movement of the third connection rod 212-6 and the fourth connection rod 212-9.

[0095] When the second operation button 212-5 is pressed downward, the sixth elastic member 212-10 and the seventh elastic member 212-11 are compressed, the third connection rod 212-6 and the fourth connection rod 212-9 approach each other, the third connection rod 212-6 and the fourth connection rod 212-9 move out of the watch body 10 of the wearable device 100, and the second connection band 212 is no longer connected to the watch body 10 of the wearable device 100. When the second operation button 212-5 is no longer pressed, the second operation button 212-5 moves upward under an elastic force of the sixth elastic member 212-10 and the seventh elastic member 212-11, and inclined surfaces at two ends of the second operation button 212-5 act on the third connection rod 212-6 and the fourth connection rod 212-9 respectively, so that the third connection rod 212-6 and the fourth connection rod 212-9 are away from each other, the third connection rod 212-6 and the fourth connection rod 212-9 separately extend into the watch body 10 of the wearable device 100, and the second connection band 212 is connected to the watch body 10 of the wearable device 100.

[0096] In this embodiment of this application, the adjustment member 24 is disposed to slide in the housing 23, and the clamping part 271 can move from one groove 2312 to another groove 2312, so that a user can, without a using dedicated tool, fine-tune the overall length of the wristband 20 anytime and anywhere based on a use requirement of the user. This improves user experience.

[0097] The foregoing descriptions are merely specific implementations of this application, but are not intended to limit the protection scope of this application. Any variation or replacement readily figured out by a person skilled in the art within the technical scope disclosed in this application shall fall within the protection scope of this application. Therefore, the protection scope of this application shall be subject to the protection scope of the claims.

Claims

1. An adjustment mechanism (22), used in a wristband (20), wherein the wristband (20) comprises a connection band (21), the adjustment mechanism (22) comprises a housing (23) and an adjustment member (24), and the adjustment member (24) is configured to be connected to an end of the connection band (21); the housing (23) comprises a bottom part (231), a first side part (232), and a second side part (233), the bottom part (231) extends in a first direction (A1), the first side part (232) and the second side part (233) are fastened to two opposite sides of the bottom part (231), and form a mounting space (230) with the bottom part (231), a fastening part (2311) is disposed on a side that is of the bottom part (231) and that faces the mounting space (230), the fastening part (2311) comprises a plurality of grooves (2312), and the plurality of grooves (2312) are arranged in the first direction (A1); and the adjustment member (24) is located in the mounting space (230), and is slidably connected to the first side part (232) and the second side part (233), a clamping part (271) is disposed on a side that is of the adjustment member (24) and that faces the bottom part (231), and when the adjustment member (24) moves in the first direction (A1) relative to the housing (23), the clamping part (271) is movable from one groove (2312) to another groove (2312).

2. The adjustment mechanism (22) according to claim 1, wherein the housing (23) comprises a first end (234) and a second end (235) that are disposed opposite to each other, the adjustment member (24) is configured to increase a length of the wristband (20) when sliding in a direction from the first end (234) to the second end (235), and the adjustment member (24) is configured to decrease the length of the wristband (20) when sliding in a direction from the second end (235) to the first end (234); and the groove (2312) comprises a first inner wall (2313) and a second inner wall (2314), the first inner wall (2313) is closer to the first end (234) than the second inner wall (2314), the clamping part (271) is capable of sliding out of the groove (2312) from the first inner wall (2313) or the second inner wall (2314), and an included angle between the first inner wall (2313) and a second direction (A2) is greater than an included angle between the second inner wall (2314) and the second direction (A2), wherein the second direction (A2) is a thickness direction of the bottom part (231).

3. The adjustment mechanism (22) according to claim 1 or 2, wherein the adjustment member (24) comprises a sliding part (25), a button (26), and a locker (27), the sliding part (25) is slidably connected to the housing (23), the locker (27) comprises the clamping part (271), the locker (27) is inserted into the sliding part (25), the clamping part (271) is exposed from the sliding part (25), one end of the button (26) extends into the sliding part (25) and is inserted into the locker (27), the other end of the button (26) is exposed from the sliding part (25), and when the button (26) moves relative to the sliding part (25), the locker (27) is away from the fastening part (2311) or close to the fastening part (2311).

4. The adjustment mechanism (22) according to claim 3, wherein the button (26) is slidably connected to the sliding part (25), and a sliding direction is parallel to the first direction (A1).

5. The adjustment mechanism (22) according to claim 3 or 4, wherein an inclined surface (2621) is disposed at the end that is of the button (26) and that is inserted into the locker (27), the inclined surface (2621) is disposed away from the clamping part (271) and is disposed at an included angle with the second direction (A2), the inclined surface (2621) abuts against the locker (27), and the second direction (A2) is the thickness direction of the bottom part (231).

6. The adjustment mechanism (22) according to claim 5, wherein the sliding part (25) comprises a first space (2511-1) and a second space (2511-2) that communicate with each other, the locker (27) is located in the first space (2511-1), the end that is of the button (26) and that is inserted into the locker (27) extends out of the locker (27) and extends into the second space (2511-2), and the button (26) is joined to an inner wall (254) of the second space (2511-2).

7. The adjustment mechanism (22) according to any one of claims 3 to 6, wherein the adjustment member (24) further comprises a first elastic member (241), and the first elastic member (241) is elastically connected between a side that is of the locker (27) and that is away from the fastening part (2311) and the sliding part (25).

8. The adjustment mechanism (22) according to claim 7, wherein the adjustment member (24) further comprises a second elastic member (242), the second elastic member (242) is elastically connected between the button (26) and the sliding part (25), and the second elastic member (242) is extendable or retractable in the first direction (A1).

9. The adjustment mechanism (22) according to claim 8, wherein the button (26) comprises an operation part (261), a fitting part (262), a first support part (263), and a second support part (264), the first support part (263), the fitting part (262), and the second support part (264) are sequentially spaced from each other and fastened to a same side of the operation part (261), and the second elastic member (242) is located on the first support part (263) or the second support part (264); the locker (27) comprises a first segment (274), a second segment (275), and a third segment (276) that are sequentially fastened to each other, the clamping part (271) is located on a side that is of the first segment (274), the second segment (275), or the third segment (276) and that faces the bottom part (231), and the first elastic member (241) is located on the first segment (274) or the third segment (276); and the fitting part (262) is inserted into the second segment (275), the first segment (274) is located between the first support part (263) and the fitting part (262), and the third segment (276) is located between the fitting part (262) and the second support part (264).

10. The adjustment mechanism (22) according to any one of claims 3 to 9, wherein the adjustment member (24) further comprises a first limiting pin (243), the sliding part (25) is provided with a limiting hole (2512), the first limiting pin (243) passes through a connection hole (265) of the button (26) and the limiting hole (2512), and the first limiting pin (243) is movable in the limiting hole (2512).

11. The adjustment mechanism (22) according to any one of claims 3 to 10, wherein the adjustment member (24) further comprises a second limiting pin (244), the housing (23) is provided with a limiting groove (236), the limiting groove (236) extends in the first direction (A1), the second limiting pin (244) passes through a connection hole (2514) of the sliding part (25) and is located in the limiting groove (236), and the second limiting pin (244) is movable in the limiting groove (236).

12. The adjustment mechanism (22) according to any one of claims 3 to 11, wherein the sliding part (25) comprises a main part (251), a first connection part (252), and a second connection part (253), the first connection part (252) and the second connection part (253) are fastened to two opposite sides of the main part (251), a portion of the button (26) and a portion of the locker (27) are located in the main part (251), the first connection part (252) is slidably connected to the first side part (232), the second connection part (253) is slidably connected to the second side part (233), and the first connection part (252) and the second connection part (253) are configured to be connected to the connection band (21) of the wristband (20).

13. A wristband (20), comprising a connection band (21) and the adjustment mechanism (22) according to any one of claims 1 to 12, wherein an end of the connection band (21) is connected to the adjustment member (24) of the adjustment mechanism (22).

14. The wristband (20) according to claim 13, wherein the wristband (20) comprises an opening and closing mechanism (28), the opening and closing mechanism (28) is connected to an end of the connection band (21), the opening and closing mechanism (28) is connected to the housing (23) of the adjustment mechanism (22), and the opening and closing mechanism (28) is configured to open or close the wristband (20).

15. A wearable device (100), comprising a watch body (10) and the wristband (20) according to claim 13 or 14, wherein the wristband (20) is connected to the watch body (10), and the watch body (10) is configured to display time, or configured to monitor health data, or configured to monitor exercise data, or configured to monitor environmental data.

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