Watchband connection structure, watchband, and wearable device

Abstract

A watch strap connection structure, a watch strap, and a wearable device are disclosed, and relate to the field of electronic device technologies. The watch strap includes a strap body and a watch strap connection structure (30) connected to the strap body. The watch strap connection structure (30) includes a watch clasp (301), a rack (302), and a pressing member (303). The watch clasp (301) is disposed on the strap body. The rack (302) is disposed on the watch clasp (301), is movable in an extension direction of the strap body, and is fastened to the strap body. The pressing member (303) is disposed on the watch clasp (301), and has a clamping structure (304) that fits the rack (302). The pressing member (303) is movable in a direction intersecting the extension direction of the strap body, for the clamping structure (304) to enter or exit tooth slots (305) of the rack (302). The rack (302) drives the strap body to move, so that the strap body can move by a width of one tooth slot (305) or a width of a plurality of tooth slots (305), to finely adjust a length of the watch strap.

Description

[0001] This application claims priority to Chinese Patent Application No. 202311604128.4, filed with the China National Intellectual Property Administration on November 27, 2023, and entitled "WATCH STRAP CONNECTION STRUCTURE, WATCH STRAP, AND WEARABLE DEVICE", which is incorporated herein by reference in its entirety.TECHNICAL FIELD

[0002] This application relates to the field of electronic device technologies, and in particular, to a wearable device, a watch strap that can be used in the wearable device, and a watch strap connection structure that can be used in the watch strap.BACKGROUND

[0003] A wearable device is generally a micro electronic device that can be worn on a body for activities, and basically includes a smart watch and a smart band. The smart watch and the smart band may be used independently, or may be used as portable accessories of a mobile terminal.

[0004] Currently, in most wearable devices, a plurality of holes are provided on a watch strap, and a wearer may adjust a length of the watch strap through the plurality of holes. However, due to a hole spacing limitation, the watch strap is often worn too loosely or too tightly, and cannot accurately adapt to a wrist, and optimal wearing experience cannot be achieved.SUMMARY

[0005] This application provides a wearable device, a watch strap that can be used in the wearable device, and a watch strap connection structure that can be used in the watch strap. An objective is to provide a structure that can finely adjust a length of the watch strap, to accurately adapt to a wrist.

[0006] To achieve the foregoing objectives, the following technical solutions are used in embodiments of this application.

[0007] According to a first aspect, this application provides a watch strap. The watch strap may be used in a wearable device, for example, a watch.

[0008] The watch strap provided in this application includes a first strap body and a watch strap connection structure connected to the first strap body. The watch strap connection structure includes a watch clasp, a rack, and a pressing member. The watch clasp is disposed on the first strap body, the rack is disposed on the watch clasp, the rack is movable in an extension direction of the first strap body, and the rack is fastened to the first strap body. The pressing member is disposed on the watch clasp, and the pressing member has a clamping structure that fits the rack. The pressing member is movable in a direction intersecting the extension direction of the first strap body, for the clamping structure to enter and exit tooth slots of the rack.

[0009] In the watch strap provided in this application, for example, when a length of the watch strap needs to be shortened to implement tight wearing, the strap body may be pushed in a direction toward the watch clasp. Because the rack is fastened to the strap body, and the rack is movable in an extension direction of the strap body, the strap body and the rack that are fastened to each other move under the action of the pushing force, for example, move a width of one tooth slot or widths of more tooth slots under the pushing force based on a requirement, to shorten the length of the watch strap. For another example, when a length of the watch strap needs to be extended to implement loose wearing, the pressing member may be pressed, so that the clamping structure on the pressing member is detached from the tooth slot of the rack, and the rack and the strap body that are connected together move in a direction away from the watch clasp, to lengthen the length of the watch strap and finely adjust the length of the watch strap.

[0010] In an implementation, the watch strap further includes a first elastic member. When the rack and the first strap body move in a first direction, the first elastic member is configured to apply an elastic force in a second direction to the first strap body. The first direction is opposite to the second direction, and both the first direction and the second direction are parallel to the extension direction of the first strap body.

[0011] The disposed first elastic member may be used to implement automatic rebound of the watch strap. For example, after the watch strap is shortened, the watch strap may be automatically extended by pressing the pressing member. Alternatively, after the watch strap is extended, the watch strap may be automatically shortened by pressing the pressing member.

[0012] In an implementation, one end of the first elastic member is connected to the watch clasp, and the other end of the first elastic member is connected to the rack. The first direction is a direction from the first strap body to the rack, and the second direction is a direction from the rack to the first strap body.

[0013] When the first strap body is pushed in the direction toward the watch clasp (for example, the first direction) to shorten the length of the watch strap, the first elastic member is compressed under the action of the pushing force, and generates a pushing force toward the first strap body (for example, the second direction). In this case, when the pressing member is pressed to lengthen the length of the watch strap, the clamping structure on the pressing member is detached from the tooth slot, and the rack and the first strap body automatically rebound under the pushing force of the first elastic member in the second direction, so that the watch strap is automatically extended, and a user does not need to stretch the first strap body. This improves user experience.

[0014] In an implementation, the rack is provided with a mounting slot, the mounting slot has a first end and a second end, the first end is farther away from the first strap body than the second end, and the first elastic member is located in the mounting slot. An abutting member is disposed on the watch clasp, and the abutting member is located at the first end of the mounting slot. One end of the first elastic member abuts against the abutting member, and the other end of the first elastic member abuts against the rack.

[0015] In this way, the entire structure can be more compact, and a size of the entire structure can be reduced.

[0016] In an implementation, the mounting slot includes a first segment and a second segment that communicate with each other, a slot width of the first segment is greater than a slot width of the second segment, a part of the first elastic member is located in the first segment, and the other part of the first elastic member is located in the second segment.

[0017] The mounting slot for disposing the elastic member is provided as the first segment with a wide slot width and the second segment with a narrow slot width. The second segment with a wide slot width may constrain the elastic member, so that the elastic member deforms in an axial direction of the elastic member. The first segment with a narrow slot width may be in gap fit with the elastic member, that is, the elastic member does not contact a wall surface of the slot, so that the elastic member can be freely extended and retracted.

[0018] In an implementation, the second segment of the mounting slot is closer to the first strap body than the first segment.

[0019] In an implementation, the watch strap further includes a first limiting structure. The first limiting structure is configured to limit a movement distance of the rack in the extension direction of the first strap body.

[0020] In an implementation, the first limiting structure includes a first limiting slot and a first limiting post disposed in the first limiting slot, and an extension direction of the first limiting slot is parallel to the extension direction of the first strap body. One of the first limiting slot and the first limiting post is disposed on the rack, and the other is disposed on the watch clasp.

[0021] The first limiting structure may be configured to limit a movement distance of the rack, to avoid a case in which experience is affected by a large movement amount of the rack when the user pushes the strap body.

[0022] In an implementation, the watch strap further includes a second elastic member, one end of the second elastic member is connected to the pressing member, and the other end of the second elastic member is connected to the watch clasp. The second elastic member is configured to apply an elastic force in a direction toward the rack to the clamping structure.

[0023] The elastic member is configured to apply an elastic force in the direction toward the rack to the clamping structure, so that a bonding force between the clamping structure and the rack can be increased. Regardless of whether the watch strap is worn tightly or loosely, the clamping structure of the pressing member does not detach from the tooth slot, thereby improving user experience.

[0024] In an implementation, the watch strap further includes a second limiting structure. The second limiting structure is configured to limit a movement distance of the pressing member in a third direction, and the third direction intersects the extension direction of the first strap body.

[0025] In an implementation, the second limiting structure includes a second limiting slot and a second limiting post disposed in the second limiting slot, and an extension direction of the second limiting slot is perpendicular to the extension direction of the first strap body. One of the second limiting slot and the second limiting post is disposed on the pressing member, and the other is disposed on the watch clasp.

[0026] The second limiting structure may be configured to limit a movement distance of the pressing member, to avoid a case in which experience is affected because the pressing member has a large movement amount and detaches far away from the rack when the user abuts the pressing member.

[0027] In an implementation, the tooth slots of the rack include a first column of tooth slots and a second column of tooth slots, the first column of tooth slots and the second column of tooth slots are provided on two opposite sides of the rack, and the first column of tooth slots and the second column of tooth slots are parallel to the extension direction of the first strap body. The pressing member includes a first pressing member and a second pressing member, and the first pressing member and the second pressing member are disposed on two opposite sides of the watch clasp. Either of the first pressing member and the second pressing member includes a first part and a second part connected to the first part, the first part is located outside the watch clasp, the second part extends into the watch clasp, and the clamping structure is disposed at an end part that is of the second part and that is away from the first part. A clamping structure of the first pressing member fits the first column of tooth slots, and a clamping structure of the second pressing member fits the second column of tooth slots.

[0028] The symmetrically provided tooth slots and pressing member are not only convenient for operation, but also improve stability of extension and retraction of the watch strap of the entire device.

[0029] In an implementation, the first column of tooth slots are closer to the first part of the second pressing member than the second column of tooth slots. The second column of tooth slots are closer to the first part of the first pressing member than the first column of tooth slots. The second part of the first pressing member crosses the second column of tooth slots, for the clamping structure of the first pressing member to fit the first column of tooth slots. The second part of the second pressing member crosses the first column of tooth slots, for the clamping structure of the second pressing member to fit the second column of tooth slots.

[0030] In this way, an extrusion force applied by the clamping structure of the first pressing member for the first column of tooth slots is applied toward the outside of the watch clasp, and an extrusion force applied by the clamping structure of the second pressing member for the second column of tooth slots is applied toward the outside of the watch clasp, so that stability and reliability of the device are improved when the pressing member is not pressed.

[0031] In an implementation, the watch clasp is provided with a first sliding slot, an extension direction of the first sliding slot is parallel to the extension direction of the first strap body, and the first strap body is slidable along the first sliding slot.

[0032] The sliding slot is provided on the watch clasp, so that the watch strap and the rack are slidable relative to the watch clasp, to lengthen and shorten the length of the watch band.

[0033] In an implementation, the watch strap further includes a first plate and a second plate. One end of the first plate is rotatably connected to the watch clasp, the other end of the first plate is rotatably connected to the second plate, the second plate is configured to connect to the second strap body of the watch strap, and the second plate is connected to the watch clasp.

[0034] In this example, the first plate is rotatably connected to the watch clasp, so that the strap body is rotatable relative to the watch clasp, thereby facilitating wearing of the device.

[0035] In an implementation, the watch strap further includes a first plate and a second plate. One end of the first plate is fastened to the watch clasp, the other end of the first plate is rotatably connected to the second plate, the second plate is configured to connect to the second strap body of the watch strap, and the second plate is connected to the watch clasp. At least one of the first plate and the second plate is a telescopic plate. A connection position between the second plate and the watch clasp includes a first stop position and a second stop position. When the telescopic plate is extended / retracted, the connection position between the second plate and the watch clasp is capable of being switched between the first stop position and the second stop position.

[0036] In this example provided in this application, the connection position between the second plate and the watch clasp can be switched between at least two stop positions through extension and retraction of the telescopic plate. For example, when the telescopic plate is extended, the connection position between the second plate and the watch clasp is at one stop position. When the connection position is at this stop position, a radial size of a ring enclosed by the watch strap can be decreased, to implement tight wearing. On the contrary, when the telescopic plate is shortened, the connection position between the second plate and the watch clasp is at another stop position. When the connection position is at this stop position, a radial size of a ring enclosed by the watch strap can be increased, to implement loose wearing.

[0037] In an implementation, the telescopic plate includes a first telescopic segment and a second telescopic segment. The watch strap further includes a third elastic member. One end of the third elastic member is connected to the first telescopic segment, the other end of the third elastic member is connected to the second telescopic segment, and the third elastic member is configured to apply an elastic force to the second telescopic segment and an elastic force to the first telescopic segment for relative extension. When the third elastic member is in a first state, the connection position between the second plate and the watch clasp is at the first stop position. When the third elastic member is in a second state, the connection position between the second plate and the watch clasp is at the second stop position.

[0038] In this example of this application, the connection position between the second plate and the watch clasp can be switched between the first stop position and the second stop position through the elastic force of the elastic member.

[0039] In an implementation, the watch strap further includes a second sliding slot and a guide post. The second sliding slot is provided on the second telescopic segment, and an extension direction of the second sliding slot is parallel to an extension / retraction direction of the second telescopic segment. The guide post is fastened to the first telescopic segment, and the guide post is located in the second sliding slot and is slidable in the extension direction of the second sliding slot. The third elastic member is disposed in the second sliding slot, one end of the third elastic member abuts against the guide post, and the other end of the third elastic member abuts against the second telescopic segment.

[0040] Fitting between the sliding slot and the guide post can constrain an extension / retraction direction of the elastic member, to limit extension / retraction directions of the first telescopic segment and the second telescopic segment, and improve reliability of the device.

[0041] In an implementation, the first plate includes a first telescopic segment and a second telescopic segment, the first telescopic segment is fastened to the watch clasp, and the second telescopic segment is rotatably connected to the second plate.

[0042] In this embodiment, the first plate that is fastened to the watch clasp is designed as a telescopic plate, so that the watch clasp can be more stable and reliable during stop position switching.

[0043] In an implementation, the second sliding slot has a first end and a second end, and the first end of the second sliding slot is farther away from the connection position between the second telescopic segment and the second plate than the second end. The first stop position is farther away from the connection position between the second telescopic segment and the second plate than the second stop position. When the guide post is located at the first end of the second sliding slot, the connection position between the second plate and the watch clasp is at the first stop position. Under a first action force, when the guide post slides from the first end to the second end, the connection position between the second plate and the watch clasp is capable of being switched from the first stop position to the second stop position, and the first action force is applied toward the watch clasp.

[0044] When the length of the watch strap is lengthened, the watch clasp may be pushed to increase the radial size of the ring structure enclosed by the watch strap.

[0045] In an implementation, the second sliding slot has a first end and a second end, and the first end of the second sliding slot is farther away from the connection position between the second telescopic segment and the second plate than the second end. The first stop position is farther away from the connection position between the second telescopic segment and the second plate than the second stop position. When the guide post is located at the second end of the second sliding slot, the connection position between the second plate and the watch clasp is at the second stop position. Under a second action force, when the guide post slides from the second end to the first end, the connection position between the second plate and the watch clasp is capable of being switched from the second stop position to the first stop position, and the first action force is applied away from the watch clasp.

[0046] When the length of the watch strap is shortened, the watch clasp may be pulled to decrease the radial size of the ring structure enclosed by the watch strap.

[0047] In an implementation, the first telescopic segment has a cavity inside, and at least a part of the second telescopic segment extends into the cavity; and the third elastic member is disposed in the cavity.

[0048] The first telescopic segment and the second telescopic segment use a sleeve mounting structure, and the elastic member is hidden inside the sleeve, thereby improving appearance aesthetics of the device.

[0049] In an implementation, the watch strap further includes a third limiting structure, and the third limiting structure is configured to limit an extension / retraction amount of the second telescopic segment relative to the first telescopic segment.

[0050] In an implementation, the third limiting structure includes a third limiting slot and a third limiting post disposed in the third limiting slot. An extension direction of the third limiting slot is parallel to an extension direction of the second telescopic segment. One of the third limiting slot and the third limiting post is disposed on the first telescopic segment, and the other is disposed on the second telescopic segment. The limiting structure is simple.

[0051] In an implementation, the watch strap further includes a fastener and a snap-fit slot, one of the fastener and the snap-fit slot is provided on the watch clasp, and the other is disposed on the second plate. The snap-fit slot includes a first snap-fit slot and a second snap-fit slot, the first snap-fit slot and the second snap-fit slot are arranged in an extension / retraction direction of the second telescopic segment, and the first snap-fit slot is farther away from the connection position between the second telescopic segment and the second plate than the second snap-fit slot. When the fastener is located in the first snap-fit slot, a connection position between the second plate and the watch clasp is at the first stop position. When the fastener is located in the second snap-fit slot, a connection position between the second plate and the watch clasp is at the second stop position.

[0052] Fitting between the fastener and the snap-fit slot can implement switching between a plurality of stop positions.

[0053] In an implementation, the first strap body includes a first segment and a second segment. The watch clasp is provided with a third sliding slot, an extension direction of the third sliding slot is parallel to the extension direction of the first strap body, and the first segment is slidable along the third sliding slot. The first segment is rotatably connected to the second segment.

[0054] In this embodiment, because the first plate is fastened to the watch clasp, the strap body further needs to be slidably connected to the watch clasp. In this way, the strap body may include the first segment and the second segment, the first segment is slidably connected to the watch clasp, and the second segment is rotatably connected to the first segment.

[0055] According to a second aspect, this application provides a watch strap connection structure. The watch strap connection structure is configured to connect to a first strap body.

[0056] The watch strap connection structure includes a watch clasp, a rack, and a pressing member. The rack is disposed on the watch clasp, the rack is movable in an extension direction of the first strap body, and the rack is configured to fasten to the first strap body. The pressing member is disposed on the watch clasp, and the pressing member has a clamping structure that fits the rack. The pressing member is movable in a direction intersecting the extension direction of the first strap body, for the clamping structure to enter and exit tooth slots of the rack.

[0057] The watch strap connection structure provided in this application is mounted on the watch strap. The strap body is pushed, so that the rack drives the strap body to move in one direction, and the length of the watch strap is shortened. Alternatively, the pressing member may be pressed, so that the clamping structure on the pressing member is detached from the tooth slot, the rack and the strap body move in opposite directions, and the length of the watch strap is lengthened, to finely adjust the length of the watch strap.

[0058] In an implementation, the watch strap connection structure further includes a first elastic member. When the rack moves in a first direction, the first elastic member is configured to apply an elastic force in a second direction to the rack. The first direction is opposite to the second direction, and both the first direction and the second direction are parallel to the extension direction of the first strap body.

[0059] In an implementation, one end of the first elastic member is connected to the watch clasp, and the other end of the first elastic member is connected to the rack. The first direction is a direction from the first strap body to the rack, and the second direction is a direction from the rack to the first strap body.

[0060] The disposed first elastic member may be used to implement automatic rebound of the watch strap. For example, after the watch strap is shortened, the watch strap may be automatically extended by pressing the pressing member. Alternatively, after the watch strap is extended, the watch strap may be automatically shortened by pressing the pressing member.

[0061] In an implementation, the rack is provided with a mounting slot, the mounting slot has a first end and a second end, the first end of the mounting slot is farther away from the first strap body than the second end of the mounting slot, and the first elastic member is located in the mounting slot. An abutting member is disposed on the watch clasp, and the abutting member is located at the first end of the mounting slot. One end of the first elastic member abuts against the abutting member, and the other end of the first elastic member abuts against the rack.

[0062] In an implementation, the mounting slot includes a first segment and a second segment that communicate with each other, a slot width of the first segment is greater than a slot width of the second segment, a part of the first elastic member is located in the first segment, and the other part of the first elastic member is located in the second segment.

[0063] The mounting slot for disposing the elastic member is provided as the first segment with a wide slot width and the second segment with a narrow slot width. The second segment with a wide slot width may constrain the elastic member, so that the elastic member deforms in an axial direction of the elastic member. The first segment with a narrow slot width may be in gap fit with the elastic member, that is, the elastic member does not contact a wall surface of the slot, so that the elastic member can be freely extended and retracted.

[0064] In an implementation, the watch strap connection structure further includes a first limiting structure. The first limiting structure is configured to limit a movement distance of the rack in the extension direction of the first strap body.

[0065] In an implementation, the first limiting structure includes a first limiting slot and a first limiting post disposed in the first limiting slot, and an extension direction of the first limiting slot is parallel to the extension direction of the first strap body. One of the first limiting slot and the first limiting post is disposed on the rack, and the other is disposed on the watch clasp.

[0066] The first limiting structure may be configured to limit a movement distance of the rack, to avoid a case in which experience is affected by a large movement amount of the rack when the user pushes the strap body.

[0067] In an implementation, the watch strap connection structure further includes a second elastic member, one end of the second elastic member is connected to the pressing member, and the other end of the second elastic member is connected to the watch clasp. The second elastic member is configured to apply an elastic force in a direction toward the rack to the clamping structure.

[0068] The elastic member is configured to apply an elastic force in the direction toward the rack to the clamping structure, so that a bonding force between the clamping structure and the rack can be increased. Regardless of whether the watch strap is worn tightly or loosely, the clamping structure of the pressing member does not detach from the tooth slot, thereby improving user experience.

[0069] In an implementation, the watch strap connection structure further includes a second limiting structure. The second limiting structure is configured to limit a movement distance of the pressing member in a third direction, and the third direction intersects the extension direction of the first strap body.

[0070] In an implementation, the second limiting structure includes a second limiting slot and a second limiting post disposed in the second limiting slot, and an extension direction of the second limiting slot is perpendicular to the extension direction of the first strap body. One of the second limiting slot and the second limiting post is disposed on the pressing member, and the other is disposed on the watch clasp.

[0071] The second limiting structure may be configured to limit a movement distance of the pressing member, to avoid a case in which experience is affected because the pressing member has a large movement amount and detaches far away from the rack when the user abuts the pressing member.

[0072] In an implementation, the tooth slots of the rack include a first column of tooth slots and a second column of tooth slots, the first column of tooth slots and the second column of tooth slots are provided on two opposite sides of the rack, and the first column of tooth slots and the second column of tooth slots are parallel to the extension direction of the first strap body. The pressing member includes a first pressing member and a second pressing member, and the first pressing member and the second pressing member are disposed on two opposite sides of the watch clasp. Either of the first pressing member and the second pressing member includes a first part and a second part connected to the first part, the first part is located outside the watch clasp, the second part extends into the watch clasp, and the clamping structure is disposed at an end part that is of the second part and that is away from the first part. A clamping structure of the first pressing member fits the first column of tooth slots, and a clamping structure of the second pressing member fits the second column of tooth slots.

[0073] The symmetrically provided tooth slots and pressing member are not only convenient for operation, but also improve stability of extension and retraction of the watch strap of the entire device.

[0074] In an implementation, the first column of tooth slots are closer to the first part of the second pressing member than the second column of tooth slots. The second column of tooth slots are closer to the first part of the first pressing member than the first column of tooth slots. The second part of the first pressing member crosses the second column of tooth slots, for the clamping structure of the first pressing member to fit the first column of tooth slots. The second part of the second pressing member crosses the first column of tooth slots, for the clamping structure of the second pressing member to fit the second column of tooth slots.

[0075] In this way, an extrusion force applied by the clamping structure of the first pressing member for the first column of tooth slots is applied toward the outside of the watch clasp, and an extrusion force applied by the clamping structure of the second pressing member for the second column of tooth slots is applied toward the outside of the watch clasp, so that stability and reliability of the device are improved when the pressing member is not pressed.

[0076] In an implementation, the watch clasp is provided with a first sliding slot, an extension direction of the first sliding slot is parallel to the extension direction of the first strap body, and the first strap body is slidable along the first sliding slot.

[0077] The sliding slot is provided on the watch clasp, so that the watch strap and the rack are slidable relative to the watch clasp, to lengthen and shorten the length of the watch band.

[0078] In an implementation, the watch strap connection structure further includes a first plate and a second plate. One end of the first plate is rotatably connected to the watch clasp, the other end of the first plate is rotatably connected to the second plate, the second plate is configured to connect to the second strap body of the watch strap, and the second plate is connected to the watch clasp.

[0079] In this example, the first plate is rotatably connected to the watch clasp, so that the strap body is rotatable relative to the watch clasp, thereby facilitating wearing of the device.

[0080] According to a third aspect, this application provides a watch strap. The watch strap may include a first strap body and a watch strap connection structure connected to the first strap body. The watch strap connection structure includes a watch clasp, a first plate, and a second plate. The watch clasp is disposed on the first strap body, one end of the first plate is fastened to the watch clasp, the other end of the first plate is rotatably connected to the second plate, the second plate is configured to connect to the second strap body of the watch strap, and the second plate is connected to the watch clasp. At least one of the first plate and the second plate is a telescopic plate. A connection position between the second plate and the watch clasp includes a first stop position and a second stop position. When the telescopic plate is extended / retracted, the connection position between the second plate and the watch clasp is capable of being switched between the first stop position and the second stop position.

[0081] In the watch strap provided in this application, because at least one of the first plate and the second plate is telescopic, when the first plate and / or the second plate are / is extended / retracted, the connection position between the second plate and the watch clasp may be switched between different stop positions. In this way, through the telescopic plate and the stop position switching structure, a radial size of a closed loop enclosed by the first strap body and the second strap body may be lengthened or shortened, to finely adjust a length of the watch strap.

[0082] In an implementation, the telescopic plate includes a first telescopic segment and a second telescopic segment. The watch strap further includes an elastic member, one end of the elastic member is connected to the first telescopic segment, the other end of the elastic member is connected to the second telescopic segment, and the elastic member is configured to apply an elastic force to the second telescopic segment and an elastic force to the first telescopic segment for relative extension. When the elastic member is in a first state, the connection position between the second plate and the watch clasp is at the first stop position. When the elastic member is in a second state, the connection position between the second plate and the watch clasp is at the second stop position.

[0083] In this example of this application, an elastic force of the elastic member is used to implement extension and retraction between the first telescopic segment and the second telescopic segment, so that the connection position between the second plate and the watch clasp is switched between the first stop position and the second stop position.

[0084] In an implementation, the watch strap further includes a sliding slot and a guide post. The sliding slot is provided on the second telescopic segment, and an extension direction of the second sliding slot is parallel to an extension / retraction direction of the second telescopic segment. The guide post is fastened to the first telescopic segment, and the guide post is located in the sliding slot and is slidable in the extension direction of the sliding slot. The elastic member is disposed in the sliding slot, one end of the elastic member abuts against the guide post, and the other end of the elastic member abuts against the second telescopic segment.

[0085] Fitting between the sliding slot and the guide post can constrain an extension / retraction direction of the elastic member, to limit extension / retraction directions of the first telescopic segment and the second telescopic segment, and improve reliability of the device.

[0086] In an implementation, the first plate includes a first telescopic segment and a second telescopic segment, the first telescopic segment is fastened to the watch clasp, and the second telescopic segment is rotatably connected to the second plate.

[0087] In this embodiment, the first plate that is fastened to the watch clasp is designed as a telescopic plate, so that the watch clasp can be more stable and reliable during stop position switching.

[0088] In an implementation, the sliding slot has a first end and a second end, and the first end of the sliding slot is farther away from the connection position between the second telescopic segment and the second plate than the second end. The first stop position is farther away from the connection position between the second telescopic segment and the second plate than the second stop position. When the guide post is located at the first end of the sliding slot, the connection position between the second plate and the watch clasp is at the first stop position. Under a first action force, when the guide post slides from the first end to the second end, the connection position between the second plate and the watch clasp is capable of being switched from the first stop position to the second stop position, and the first action force is applied toward the watch clasp.

[0089] In an implementation, the sliding slot has a first end and a second end, and the first end of the sliding slot is farther away from the connection position between the second telescopic segment and the second plate than the second end. The first stop position is farther away from the connection position between the second telescopic segment and the second plate than the second stop position. When the guide post is located at the second end of the sliding slot, the connection position between the second plate and the watch clasp is at the second stop position. Under a second action force, when the guide post slides from the second end to the first end, the connection position between the second plate and the watch clasp is capable of being switched from the second stop position to the first stop position, and the first action force is applied away from the watch clasp.

[0090] In an implementation, the first telescopic segment has a cavity inside, and at least a part of the second telescopic segment extends into the cavity; and the elastic member is disposed in the cavity.

[0091] The first telescopic segment and the second telescopic segment use a sleeve mounting structure, and the elastic member is hidden inside the sleeve, thereby improving appearance aesthetics of the device.

[0092] In an implementation, the watch strap further includes a third limiting structure, and the third limiting structure is configured to limit an extension / retraction amount of the second telescopic segment relative to the first telescopic segment.

[0093] In an implementation, the third limiting structure includes a third limiting slot and a third limiting post disposed in the third limiting slot. An extension direction of the third limiting slot is parallel to an extension direction of the second telescopic segment. One of the third limiting slot and the third limiting post is disposed on the first telescopic segment, and the other is disposed on the second telescopic segment. The limiting structure is simple.

[0094] In an implementation, the watch strap further includes a fastener and a snap-fit slot, one of the fastener and the snap-fit slot is provided on the watch clasp, and the other is disposed on the second plate. The snap-fit slot includes a first snap-fit slot and a second snap-fit slot, the first snap-fit slot and the second snap-fit slot are arranged in an extension / retraction direction of the second telescopic segment, and the first snap-fit slot is farther away from the connection position between the second telescopic segment and the second plate than the second snap-fit slot. When the fastener is located in the first snap-fit slot, a connection position between the second plate and the watch clasp is at the first stop position. When the fastener is located in the second snap-fit slot, a connection position between the second plate and the watch clasp is at the second stop position.

[0095] Fitting between the fastener and the snap-fit slot can implement switching between a plurality of stop positions.

[0096] In an implementation, the first strap body is rotatably connected to the watch clasp.

[0097] According to a fourth aspect, this application provides a watch strap connection structure. The watch strap connection structure is configured to connect to a first strap body and a second strap body of a watch strap. The watch strap connection structure includes a watch clasp, a first plate, and a second plate. One end of the first plate is fastened to the watch clasp, the other end of the first plate is rotatably connected to the second plate, the second plate is connected to the watch clasp, the watch clasp is configured to connect to the first strap body, and the second plate is configured to connect to the second strap body. At least one of the first plate and the second plate is a telescopic plate. A connection position between the second plate and the watch clasp includes a first stop position and a second stop position. When the telescopic plate is extended / retracted, the connection position between the second plate and the watch clasp is capable of being switched between the first stop position and the second stop position.

[0098] In the watch strap connection structure provided in this application, because at least one of the first plate and the second plate is telescopic, when the first plate and / or the second plate are / is extended / retracted, the connection position between the second plate and the watch clasp may be switched between different stop positions. In this way, through the telescopic plate and the stop position switching structure, a radial size of a closed loop enclosed by the first strap body and the second strap body may be lengthened or shortened, to finely adjust a length of the watch strap.

[0099] In an implementation, the telescopic plate includes a first telescopic segment and a second telescopic segment. The watch strap further includes an elastic member, one end of the elastic member is connected to the first telescopic segment, the other end of the elastic member is connected to the second telescopic segment, and the elastic member is configured to apply an elastic force to the second telescopic segment and an elastic force to the first telescopic segment for relative extension. When the elastic member is in a first state, the connection position between the second plate and the watch clasp is at the first stop position. When the elastic member is in a second state, the connection position between the second plate and the watch clasp is at the second stop position.

[0100] In this example of this application, an elastic force of the elastic member is used to implement extension and retraction between the first telescopic segment and the second telescopic segment, so that the connection position between the second plate and the watch clasp is switched between the first stop position and the second stop position.

[0101] In an implementation, the watch strap further includes a sliding slot and a guide post. The sliding slot is provided on the second telescopic segment, and an extension direction of the second sliding slot is parallel to an extension / retraction direction of the second telescopic segment. The guide post is fastened to the first telescopic segment, and the guide post is located in the sliding slot and is slidable in the extension direction of the sliding slot. The elastic member is disposed in the sliding slot, one end of the elastic member abuts against the guide post, and the other end of the elastic member abuts against the second telescopic segment.

[0102] Fitting between the sliding slot and the guide post can constrain an extension / retraction direction of the elastic member, to limit extension / retraction directions of the first telescopic segment and the second telescopic segment, and improve reliability of the device.

[0103] In an implementation, the first plate includes a first telescopic segment and a second telescopic segment, the first telescopic segment is fastened to the watch clasp, and the second telescopic segment is rotatably connected to the second plate.

[0104] In this embodiment, the first plate that is fastened to the watch clasp is designed as a telescopic plate, so that the watch clasp can be more stable and reliable during stop position switching.

[0105] In an implementation, the sliding slot has a first end and a second end, and the first end of the sliding slot is farther away from the connection position between the second telescopic segment and the second plate than the second end. The first stop position is farther away from the connection position between the second telescopic segment and the second plate than the second stop position. When the guide post is located at the first end of the sliding slot, the connection position between the second plate and the watch clasp is at the first stop position. Under a first action force, when the guide post slides from the first end to the second end, the connection position between the second plate and the watch clasp is capable of being switched from the first stop position to the second stop position, and the first action force is applied toward the watch clasp.

[0106] In an implementation, the sliding slot has a first end and a second end, and the first end of the sliding slot is farther away from the connection position between the second telescopic segment and the second plate than the second end. The first stop position is farther away from the connection position between the second telescopic segment and the second plate than the second stop position. When the guide post is located at the second end of the sliding slot, the connection position between the second plate and the watch clasp is at the second stop position. Under a second action force, when the guide post slides from the second end to the first end, the connection position between the second plate and the watch clasp is capable of being switched from the second stop position to the first stop position, and the first action force is applied away from the watch clasp.

[0107] In an implementation, the first telescopic segment has a cavity inside, and at least a part of the second telescopic segment extends into the cavity; and the elastic member is disposed in the cavity.

[0108] The first telescopic segment and the second telescopic segment use a sleeve mounting structure, and the elastic member is hidden inside the sleeve, thereby improving appearance aesthetics of the device.

[0109] In an implementation, the watch strap further includes a third limiting structure, and the third limiting structure is configured to limit an extension / retraction amount of the second telescopic segment relative to the first telescopic segment.

[0110] In an implementation, the third limiting structure includes a third limiting slot and a third limiting post disposed in the third limiting slot. An extension direction of the third limiting slot is parallel to an extension direction of the second telescopic segment. One of the third limiting slot and the third limiting post is disposed on the first telescopic segment, and the other is disposed on the second telescopic segment. The limiting structure is simple.

[0111] In an implementation, the watch strap further includes a fastener and a snap-fit slot, one of the fastener and the snap-fit slot is provided on the watch clasp, and the other is disposed on the second plate. The snap-fit slot includes a first snap-fit slot and a second snap-fit slot, the first snap-fit slot and the second snap-fit slot are arranged in an extension / retraction direction of the second telescopic segment, and the first snap-fit slot is farther away from the connection position between the second telescopic segment and the second plate than the second snap-fit slot. When the fastener is located in the first snap-fit slot, a connection position between the second plate and the watch clasp is at the first stop position. When the fastener is located in the second snap-fit slot, a connection position between the second plate and the watch clasp is at the second stop position.

[0112] Fitting between the fastener and the snap-fit slot can implement switching between a plurality of stop positions.

[0113] According to a fifth aspect, this application provides a wearable device. The wearable device may be a watch or a band.

[0114] The wearable device may include a watch face and the watch strap in any one of the foregoing implementations, and the watch strap is connected to the watch face.

[0115] Because the wearable device provided in this application includes the watch strap in any one of the foregoing manners, and a watch strap connection structure has a structure for finely adjusting a length of the watch strap, when the wearable device is worn, the length of the watch strap can be finely adjusted based on a thickness of a wrist, to accurately adapt to the wrist, so as to improve user experience. Alternatively, when the device has a physiological monitoring function, monitoring accuracy can be further improved, and working performance can be improved.BRIEF DESCRIPTION OF DRAWINGS

[0116] FIG. 1 is a diagram of a partial structure of a wearable device according to an embodiment of this application; FIG. 2 is a diagram of a partial structure of a wearable device according to an embodiment of this application; FIG. 3 is an exploded view of the partial structure in FIG. 2; FIG. 4 is an A-direction view of FIG. 3; FIG. 5 is a diagram of a partial structure of a wearable device according to an embodiment of this application; FIG. 6 is a diagram of a partial structure of a wearable device according to an embodiment of this application; FIG. 7 is a structural diagram of a telescoping principle of a wearable device according to an embodiment of this application; FIG. 8 is a structural diagram of a telescoping principle of a wearable device according to an embodiment of this application; FIG. 9 is a structural diagram of a telescoping principle of a wearable device according to an embodiment of this application; FIG. 10 is a schematic exploded view of a partial structure of a wearable device according to an embodiment of this application; FIG. 11 is a structural diagram for presenting a pressing member according to an embodiment of this application; FIG. 12 is a schematic exploded view for presenting a pressing member according to an embodiment of this application; FIG. 13 is a structural diagram for presenting a pressing member according to an embodiment of this application; FIG. 14 is a structural diagram for presenting a connection relationship between a clamping structure of a pressing member and a rack according to an embodiment of this application; FIG. 15 is a structural diagram for presenting a mounting slot of an elastic member according to an embodiment of this application; FIG. 16 is a structural diagram for presenting a limiting structure according to an embodiment of this application; FIG. 17 is a structural diagram for presenting a limiting structure according to an embodiment of this application; FIG. 18 is a diagram of a partial structure of a wearable device according to an embodiment of this application; FIG. 19 is a diagram of a partial structure of a wearable device according to an embodiment of this application; FIG. 20 is a diagram of a partial structure of a wearable device according to an embodiment of this application; FIG. 21 is a structural diagram for presenting a limiting structure according to an embodiment of this application; FIG. 22 is a schematic exploded view of a partial structure of a wearable device according to an embodiment of this application; FIG. 23 is a schematic exploded view of a partial structure of a wearable device according to an embodiment of this application; FIG. 24 is a structural diagram of a partial structure of a wearable device according to an embodiment of this application; FIG. 25 is a schematic exploded view of a telescopic plate of a wearable device according to an embodiment of this application; FIG. 26 is a structural diagram of a telescoping principle of a telescopic plate according to an embodiment of this application; FIG. 27 is a structural diagram of a telescoping principle of a telescopic plate according to an embodiment of this application; FIG. 28 is a structural diagram of a telescoping principle of a telescopic plate and stop position switching according to an embodiment of this application; FIG. 29 is a structural diagram of a telescoping principle of a telescopic plate and stop position switching according to an embodiment of this application; FIG. 30 is a structural diagram of a telescoping principle of a telescopic plate and stop position switching according to an embodiment of this application; FIG. 31 is a structural diagram of a telescoping principle of a telescopic plate and stop position switching according to an embodiment of this application; FIG. 32 is a schematic exploded view of a structure of a telescopic plate according to an embodiment of this application; FIG. 33 is a schematic exploded view of a structure of a telescopic plate according to an embodiment of this application; FIG. 34 is a schematic exploded view of a structure of a telescopic plate according to an embodiment of this application; and FIG. 35 is a structural diagram of a partial structure of a wearable device according to an embodiment of this application. Reference numerals:

[0117] 10: first strap body; 20: second strap body; 30: connection structure; 101: hole; 10A: first strap body segment; 10B: second strap body segment; 10C: rotating shaft; 301: watch clasp; 3011: first housing; 3012: second housing; 3013: sliding slot; 3014: through hole; 3015: limiting cavity; 3016: hole; 3017: counterbore; 3018: shaft hole; 3019: fastener; 3020: structural member; 302: rack; 3021: first column of tooth slots; 3022: second column of tooth slots; 303: pressing member; 3031: first pressing member; 3032: second pressing member; 303A: first part; 303B: second part; 304: clamping structure; 3041: first bonding surface; 3042: second bonding surface; 305: tooth slot; 3051: first wall surface; 3052: second wall surface; 306, 3061, 3062, and 311: elastic members; 307, 3071, and 3072: mounting slots; 307A: first segment; 307B: second segment; 308, 3081, and 3082: abutting members; 309 and 310: limiting structures; 3091 and 3101: limiting slots; 3092 and 3102: limiting posts; 40: first plate; 50: second plate; 501: first snap-fit slot; 502: second snap-fit slot; 601 and 602: rotating shafts; 70: snap-fit fastener; 701: snap-fit slot; 702: fastener; 80: fastening member; 901: first telescopic segment; 902: second telescopic segment; 903: elastic member; 904: sliding slot; 905: guide post; 906: limiting slot; 907: limiting post; 901A: cover plate; and 901B: bottom plate. DESCRIPTION OF EMBODIMENTS

[0118] Embodiments of this application provide a wearable device. For example, the wearable device may be a smart band or a smart watch. The wearable device may be worn on a wrist, and may implement functions such as time display, timing, time reporting, message notification, motion detection, heart rate monitoring, and blood oxygen level detection.

[0119] The wearable device mainly includes a watch strap and a watch face. The watch strap is configured to encircle a wrist of a user, to implementing wearing of the wearable device.

[0120] As shown in FIG. 1, FIG. 1 is an example of a diagram of a structure of a watch strap. For example, the watch strap includes a first strap body 10 and a second strap body 20, and a watch face is connected between the first strap body 10 and the second strap body 20. For example, the watch face may be connected between an end part A of the first strap body 10 and an end part B of the second strap body 20. The first strap body 10 and the second strap body 20 may be connected to each other through a connection structure 30, so that the first strap body 10, the watch face, and the second strap body 20 form a closed loop, to encircle a wrist.

[0121] To adapt to the wrist, as shown in FIG. 1, a plurality of holes 101 may be provided on the first strap body 10 and the second strap body 20, and a wearer may adjust a length of the watch strap through the plurality of holes based on a wrist thickness.

[0122] In FIG. 1, an adjustment amount of the length of the watch strap is at least a distance between two adjacent holes 101. In this way, the watch strap may be worn too loose or too tight, and cannot accurately adapt to the wrist, thereby reducing user experience, and even reducing use performance of the wearable device. For example, when the wearable device has functions such as heart rate monitoring and blood oxygen level detection, because the watch strap is worn too loose, the watch face cannot be close to the skin, thereby reducing measurement accuracy.

[0123] To enable the wearable device to accurately adapt to the wrist, improve user experience, and improve use performance of the device, the wearable device in embodiments of this application includes a fine adjustment structure that can finely adjust the length of the watch strap. For example, as shown in FIG. 1, an adjustment amount of the fine adjustment structure may be half, one third, one fourth, or one fifth of a distance between two adjacent holes, or even smaller. Alternatively, an adjustment amount of the fine adjustment structure may be greater than one hole spacing and less than two hole spacings. For example, the adjustment amount may be equal to 3 / 2 hole spacings. For a structure that can be implemented by the fine adjustment structure, refer to the following.

[0124] Refer to FIG. 2, FIG. 3, and FIG. 4. FIG. 2 is a diagram of a partial structure of a wearable device according to an embodiment of this application. FIG. 3 is an exploded view of FIG. 2. FIG. 4 is an A-direction view of FIG. 3, and a pressing member is exploded.

[0125] In this example of this application, the connection structure disposed between the first strap body 10 and the second strap body 20 includes a watch clasp 301. In FIG. 2 and FIG. 3, for example, the watch clasp 301 is disposed at an end part of the first strap body 10.

[0126] As shown in FIG. 4, the connection structure further includes a rack 302 and a pressing member 303. The watch clasp 301 is used as a bearing carrier of the rack 302 and the pressing member 303, that is, the rack 302 and the pressing member 303 are disposed on the watch clasp 301.

[0127] The rack 302 is fastened to the first strap body 10. The rack 302 is movably disposed on the watch clasp 301, and the rack 302 is movable in an extension direction of the first strap body 10. As shown in FIG. 4, because the rack 302 is fastened to the first strap body 10, the rack 302 and the first strap body 10 are movable in the extension direction L of the first strap body 10.

[0128] As shown in FIG. 4, the pressing member 303 has a clamping structure 304 that fits the rack 302, and the pressing member 303 is movable in a direction intersecting the extension direction L of the first strap body 10, for the clamping structure 304 to enter and exit tooth slots 305 of the rack 302.

[0129] For example, the pressing member 303 is movable in a direction (for example, a direction M shown in FIG. 4) perpendicular to or nearly perpendicular to the extension direction L of the first strap body 10.

[0130] In some examples, as shown in FIG. 5, FIG. 5 is a diagram of the partial structure in FIG. 4. A width d of each of two adjacent tooth slots 305 may be one fifth, one sixth, or even smaller of a hole spacing s.

[0131] When the length of the watch strap needs to be shortened to implement tight wearing, as shown in FIG. 5, the first strap body 10 may be pushed in a direction (for example, a direction P11 shown in FIG. 5) toward the watch clasp 301, and the first strap body 10 drives the rack 302 to move in the direction P11. The clamping structure 304 may switch from fitting one tooth slot of the rack 302 to fitting another tooth slot, to shorten the length of the watch strap. For example, a shortened length of the watch strap may be the width d of one tooth slot, or may be a width 2d of two tooth slots, or a width of more tooth slots.

[0132] When the length of the watch strap needs to be extended to implement loose wearing, as shown in FIG. 5, the pressing member 303 may be pressed in a direction M1. Under a pressing force, the clamping structure 304 on the pressing member 303 is detached from the tooth slot 305 of the rack 302, and the rack 302 and the first strap body 10 that are connected together move in a direction (for example, a direction P12 shown in FIG. 5) away from the watch clasp 301, to lengthen the length of the watch strap. In this way, the length of the watch strap can be finely adjusted.

[0133] In some application scenarios, according to a requirement, a user may accurately adjust the length of the watch strap through both hole spacing adjustment and fine adjustment in FIG. 4 and FIG. 5, to adapt to the wrist and improve experience.

[0134] In addition, in the wearable device in embodiments of this application, the length of the watch strap may be finely adjusted in a wearing state through the fine adjustment structure, so that adjustment accuracy is higher, wrist adaptability is better, and a quick adjustment effect can be achieved.

[0135] In the examples in FIG. 4 and FIG. 5, the rack 302 and the pressing member 303 are disposed at an end part of a strap body.

[0136] In some other examples, the rack 302 and the pressing member 303 may alternatively be disposed in an area between two ends of a strap body, and the rack is used to drive the strap body to move, to implement extension and retraction of the watch strap.

[0137] When the pressing member 303 is pressed, after the clamping structure 304 on the pressing member 303 is detached from the tooth slot of the rack 302, to enable the rack 302 and the first strap body 10 to automatically rebound, as shown in FIG. 5, an elastic member 306 may be further included. When the rack 302 drives the first strap body 10 to move in a first direction, the elastic member 306 is configured to push the first strap body 10 in a second direction. The first direction is opposite to the second direction, and both the first direction and the second direction are parallel to the extension direction of the first strap body 10.

[0138] In some examples, as shown in FIG. 5, when the rack 302 drives the first strap body 10 to move in the direction P11 shown in FIG. 5, the elastic member 306 is configured to apply, to the first strap body 10, a pushing force: f push, in the direction P12 shown in FIG. 5. In this example, the first direction is a direction from the first strap body 10 to the rack 302 (the direction P11 shown in FIG. 5), and the second direction is a direction from the rack 302 to the first strap body 10 (the direction P12 shown in FIG. 5). That is, in this embodiment, the elastic member 306 pushes the first strap body 10 outward in a direction toward the first strap body 10.

[0139] In some other examples, as shown in FIG. 6, in this embodiment, when the rack 302 drives the first strap body 10 to move in a direction P21 shown in FIG. 6, the elastic member 306 is configured to apply, to the first strap body 10, a pulling force: f pull, in a direction P22 shown in FIG. 6. In this example, the first direction is a direction from the rack 302 to the first strap body 10 (the direction P21 shown in FIG. 6), and the second direction is a direction from the first strap body 10 to the rack 302 (the direction P22 shown in FIG. 6). That is, in this embodiment, the elastic member 306 pulls the first strap body 10 inward in a direction toward the rack 302.

[0140] When the example in FIG. 5 is used, one end of the elastic member 306 may be connected to the watch clasp 301, and the other end of the elastic member 306 is connected to the rack 302. When the rack 302 drives the first strap body 10 to move in the direction P11 shown in FIG. 5, the elastic member 306 is configured to apply a pushing force in the direction P12 shown in FIG. 5 to the rack 302.

[0141] FIG. 7 and FIG. 8 respectively show two disposing manners of the elastic member 306 in the embodiment in FIG. 5.

[0142] As shown in FIG. 7, the rack 302 may be provided with a mounting slot 307, an abutting member 308 is disposed on the watch clasp 301, and the abutting member 308 is located in the mounting slot 307. An extension direction of the mounting slot 307 is parallel to the extension direction L of the first strap body 10, and the mounting slot 307 has a first end away from the first strap body 10 and a second end close to the first strap body 10. The abutting member 308 is located at the first end. One end of the elastic member 306 abuts against the abutting member 308, and the other end of the elastic member 306 abuts against the rack 302.

[0143] A principle of finely adjusting the length of the watch strap is described with reference to (a) to (d) in FIG. 7. As shown in (a) of FIG. 7, the clamping structure 304 of the pressing member 303 fits a tooth slot A of the rack 302, to apply, to the first strap body 10, a pushing force in a direction toward the watch clasp 301. As shown in (b) of FIG. 7, the first strap body 10 and the rack 302 move leftward by a distance s, and the clamping structure 304 of the pressing member 303 fits a tooth slot B of the rack 302. In addition, because the elastic member 306 is compressed, a pushing force f toward the first strap body 10 is generated. In this way, the length of the watch strap is shortened. As shown in (c) in FIG. 7, a pushing force is applied to the pressing member 303, so that the clamping structure 304 is detached from the tooth slot B of the rack 302. The rack 302 and the first strap body 10 move rightward by a distance s under an action of the pushing force f of the elastic member 306. The clamping structure 304 of the pressing member 303 fits the tooth slot A of the rack 302, to extend the length of the watch strap.

[0144] As shown in FIG. 8, the example in FIG. 8 is the same as the example in FIG. 7 in that the rack 302 may be provided with a mounting slot 307, an abutting member 308 is disposed on the watch clasp 301, and the abutting member 308 is located in the mounting slot 307.

[0145] A difference between the example in FIG. 8 and the example in FIG. 7 is that the abutting member 308 is located at a second end of the mounting slot 307, one end of the elastic member 306 is connected to the abutting member 308, and the other end of the elastic member 306 is connected to the rack 302.

[0146] A principle of finely adjusting the length of the watch strap is described with reference to (a) to (d) in FIG. 8. As shown in (a) of FIG. 8, the clamping structure 304 of the pressing member 303 fits a tooth slot A of the rack 302, to apply, to the first strap body 10, a pushing force in a direction toward the watch clasp 301. As shown in (b) of FIG. 8, the first strap body 10 and the rack 302 move leftward by a distance s, and the clamping structure 304 of the pressing member 303 fits a tooth slot B of the rack 302. In addition, because the elastic member 306 is stretched, a pushing force f toward the first strap body 10 is generated. In this way, the length of the watch strap is shortened. As shown in (c) in FIG. 8, a pushing force is applied to the pressing member 303, so that the clamping structure 304 is detached from the tooth slot B of the rack 302. The rack 302 and the first strap body 10 move rightward by a distance s under an action of the pushing force f of the elastic member 306. The clamping structure 304 of the pressing member 303 fits the tooth slot A of the rack 302, to extend the length of the watch strap.

[0147] In the example in FIG. 7 and the example in FIG. 8, the elastic member 306 is disposed. When the length of the watch strap needs to be lengthened, automatic rebound of the rack 302 and the first strap body 10 can be implemented. In this way, user experience can be improved, and the user does not need to pull the strap body to lengthen the length of the watch strap.

[0148] In the example in FIG. 7 and the example in FIG. 8, because the abutting member 308 is located at different positions, after the watch strap is shortened, states of the elastic member 306 are different. In FIG. 7, the elastic member 306 is in a compressed state. Therefore, in an example, one end of the elastic member 306 may directly abut against the abutting member 308, and the other end of the elastic member 306 may directly abut against the rack 302. However, in FIG. 8, after the watch strap is shortened, the elastic member 306 is in a stretched state. In some examples, a connection structure may be used to fasten one end of the elastic member 306 to the abutting member 308 and fasten the other end of the elastic member 306 to the rack 302. For example, a welding fastening manner may be used.

[0149] In some examples, the abutting member 308 configured to abut against the elastic member 306 may be of an integrated structure with the watch clasp 301, or may be connected to the watch clasp 301 through a connection structure (for example, welding).

[0150] FIG. 9 shows an example of a principle of finely adjusting the length of the watch strap in the structure shown in FIG. 6. A pulling force is applied to the first strap body 10 in a direction away from the watch clasp 301. The first strap body 10 and the rack 302 move rightward, to extend the watch strap. In addition, because the elastic member 306 is stretched, a pulling force f away from the first strap body 10 is generated. When a pushing force is applied to the pressing member 303, the clamping structure 304 is detached from the tooth slot B of the rack 302, and the rack 302 and the first strap body 10 move leftward by a distance under an action of the pulling force f of the elastic member 306, to shorten the length of the watch strap.

[0151] Return to FIG. 7. Two elastic members 306 configured to implement automatic rebound may be disposed, which are respectively an elastic member 3061 and an elastic member 3062. The mounting slot 307 includes a mounting slot 3071 and a mounting slot 3072, and the abutting member 308 includes an abutting member 3081 and an abutting member 3082. The mounting slot 3071 and the mounting slot 3072 are provided in parallel, the elastic member 3061 abuts against the abutting member 3081, and the elastic member 3062 abuts against the abutting member 3082.

[0152] The following describes some structures that can be implemented by the watch clasp 301, the rack 302, the pressing member 303, and the elastic member 306 with reference to structural diagrams.

[0153] In some examples, as shown in FIG. 10, FIG. 10 shows an exploded view of the watch clasp 301 and the first strap body 10. The watch clasp 301 may include a first housing 3011 and a second housing 3012. The first housing 3011 and the second housing 3012 are snap-fitted, and mounting space is formed inside. The rack 302 is located in the mounting space.

[0154] The first housing 3011 and the second housing 3012 are snap-fitted, and a through hole 3014 is formed on a side facing the first strap body 10. The rack 302 may pass through the through hole 3014 and be fastened to the first strap body 10.

[0155] Because the rack 302 and the first strap body 10 that are fastened to each other are movable relative to the watch clasp 301, as shown in FIG. 10, a sliding slot 3013 may be provided on the first housing 3011, and the first strap body 10 is slidable along the sliding slot 3013. An extension direction of the sliding slot 3013 is parallel to the extension direction of the first strap body 10.

[0156] In some process structures, the first housing 3011 and the second housing 3012 may be independent structural members, and are connected to each other through a connector. In some other process structures, the first housing 3011 and the second housing 3012 are an integrated structural member.

[0157] To make the structure symmetrical, facilitate user operation, and ensure stability of extension and retraction of the strap body, as shown in FIG. 11 and FIG. 12, FIG. 11 shows an example of a connection relationship between a rack and a pressing member, and FIG. 12 is an exploded view of FIG. 11. Two columns of tooth slots may be provided on the rack 302, which are respectively a first column of tooth slots 3021 and a second column of tooth slots 3022. The first column of tooth slots 3021 and the second column of tooth slots 3022 are disposed back to back, that is, slot openings of the first column of tooth slots 3021 face away from slot openings of the second column of tooth slots 3022. Both the first column of tooth slots 3021 and the second column of tooth slots 3022 are parallel to the extension direction of the first strap body 10.

[0158] The pressing member includes a first pressing member 3031 and a second pressing member 3032. The first pressing member 3031 and the second pressing member 3032 are disposed on two opposite sides of the rack 302. The first pressing member 3031 is used in cooperation with the first column of tooth slots 3021, and the second pressing member 3032 is used in cooperation with the second column of tooth slots 3022. During use, the first pressing member 3031 and the second pressing member 3032 may be simultaneously pressed by the thumb and the index finger, to improve operation convenience and stability of extension of the watch strap.

[0159] Still refer to FIG. 11. The first pressing member 3031 and the second pressing member 3032 each may include a first part 303A and a second part 303B connected to the first part 303A. The first part 303A is located outside the watch clasp 301 and is used by the user for pressing, and the first part 303A is in gap fit with the watch clasp 301, to implement movement of the pressing member relative to the watch clasp. The second part 303B extends to the inside of the watch clasp 301, and the clamping structure 304 may be disposed at an end part that is of the second part 303B and that is away from the first part 303A.

[0160] In this example, the first part 303A and the second part 303B may be an integrated structural member, or may be independent structural members, and are connected to each other through a connector.

[0161] As shown in FIG. 11, the first column of tooth slots 3021 are closer to the first part 303A of the second pressing member than the second column of tooth slots 3022. The second column of tooth slots 3022 are closer to the first part 303A of the first pressing member 3031 than the first column of tooth slots 3021. A clamping structure 304 of the first pressing member 3031 fits the first column of tooth slots 3021, and a clamping structure 304 of the second pressing member 3032 fits the second column of tooth slots 3022. Fitting herein may be understood as follows: The clamping structure 304 of the first pressing member 3031 may enter and exit the first column of tooth slots 3021, and the clamping structure 304 of the second pressing member 3032 may enter and exit the second column of tooth slots 3022.

[0162] Alternatively, it may be understood that the second part 303B of the first pressing member 3031 crosses the rack 302, so that the clamping structure 304 of the first pressing member 3031 fits the first column of tooth slots 3021 that are disposed away. The second part 303B of the second pressing member 3032 crosses the rack 302, so that the clamping structure 304 of the second pressing member 3032 fits the second column of tooth slots 3022 that are disposed away.

[0163] As shown in FIG. 13, FIG. 13 is a structural diagram of another position relationship between a pressing member and a rack. In this example, a first column of tooth slots 3021 and a second column of tooth slots 3022 are included. The first column of tooth slots 3021 are disposed opposite to the second column of tooth slots 3022, that is, slot openings of the first column of tooth slots 3021 face slot openings of the second column of tooth slots 3022. The first column of tooth slots 3021 are disposed close to a first pressing member 3031, and the second column of tooth slots 3022 are disposed close to a second pressing member 3032. A clamping structure 304 of the first pressing member 3031 fits the first column of tooth slots 3021, and a clamping structure 304 of the second pressing member 3032 fits the second column of tooth slots 3022.

[0164] In some examples, as shown in FIG. 14, FIG. 14 shows an example of a connection relationship between the clamping structure 304 and the tooth slot 305. A tooth slot is enclosed by a first wall surface 3051 and a second wall surface 3052. The first wall surface 3051 is a surface perpendicular to the extension direction of the first strap body 10, that is, the first wall surface is parallel to a movement direction of the pressing member. The second wall surface 3052 is an inclined surface, and the inclined surface forms an acute angle α with the extension direction of the first strap body.

[0165] To fit the slot structure shown in FIG. 14, the clamping structure 304 includes a first bonding surface 3041 that is attached to the first wall surface 3051 and a second bonding surface 3042 that is attached to the second wall surface 3052. The first bonding surface 3041 may be parallel to the first wall surface 3051, and the second bonding surface 3042 may be parallel to the second wall surface 3052.

[0166] The gear slot and the clamping structure of this structure enable the rack and the first strap body to move in one direction. However, when the rack and the first strap body move in opposite directions, the pressing member needs to be unlocked. For example, refer to FIG. 14. When the first strap body 10 is pushed, and the first strap body 10 and the rack 302 move in a direction (a direction P1 shown in FIG. 14) toward the watch clasp 301, the pressing member needs to be unlocked, for the first strap body 10 and the rack 302 to move. However, when the first strap body 10 and the rack 302 move in a direction (a direction P2 shown in FIG. 14) away from the watch clasp 301, the pressing member needs to be unlocked, for the first strap body 10 and the rack 302 to move.

[0167] FIG. 15 shows an example of an implementable structure of the mounting slot 307 for mounting the elastic member 306. In this structure, the mounting slot 307 includes a first segment 307A and a second segment 307B, the first segment 307A and the second segment 307B are connected to each other, a part of the elastic member 306 is located in the first segment 307A, and the other part of the elastic member 306 is located in the second segment 307B.

[0168] A slot width d of the first segment 307A is greater than a slot width d of the second segment 307B. The elastic member 306 located in the second segment 307B may be attached to an inner wall of the second segment 307B. In this way, the structure may have a limiting function. For example, when the rack drives the first strap body to move, the deformed elastic member 306 may be extended / retracted in an axial direction of the elastic member under constraint of the second segment 307B. The elastic member 306 located in the first segment 307A may be in gap fit with an inner wall of the first segment 307A, so that sufficient extension and deformation space can be provided for the elastic member 306.

[0169] In FIG. 15, the first segment 307A with a larger slot width is farther away from the first strap body 10 than the second segment 307B with a smaller slot width. In some other examples, the first segment 307A with a larger slot width may be closer to the first strap body 10 than the second segment 307B with a smaller slot width.

[0170] When the rack 302 and the first strap body 10 that are connected together move for adjustment of the length of the watch strap. To limit a movement distance, in this embodiment of this application, a limiting structure is further included. As shown in FIG. 16, FIG. 16 shows an implementable structure of a limiting structure 309. The limiting structure 309 is configured to limit a movement distance of the rack 302 in the extension direction (for example, an L direction shown in FIG. 16) of the first strap body 10.

[0171] The limiting structure 309 has a plurality of implementable structures, and the following provides two implementable examples.

[0172] For example, as shown in FIG. 16, the limiting structure 309 may include a limiting slot 3091 and a limiting post 3092, and an extension direction of the limiting slot 3091 is parallel to the extension direction (for example, the L direction shown in FIG. 16) of the first strap body 10. One of the limiting slot 3091 and the limiting post 3092 is disposed on the rack 302, and the other is disposed on the watch clasp 301. For example, in FIG. 16, the limiting slot 3091 is provided on the rack 302, and the limiting post 3092 is disposed on the watch clasp 301. The limiting post 3092 and the watch clasp 301 may be of an integrated structure.

[0173] The limiting slot 3091 shown in FIG. 16 may be provided between the mounting slot 3071 and the mounting slot 3072. A length size of the limiting slot 3091 may be set based on an extension / retraction distance.

[0174] For another example, as shown in FIG. 17, a structural member 3020 may be disposed on the watch clasp 301, a limiting cavity 3015 is enclosed by the structural member 3020, and at least a part of the rack 302 may be disposed in the limiting cavity 3015. In this way, movement of the rack is constrained through the limiting cavity 3015, to limit a movement distance of the rack 302.

[0175] The clamping structure 304 of the pressing member 303 extends into the tooth slot of the rack 302. To prevent the clamping structure 304 from falling off from the tooth slot when the pressing member 303 is not pressed, an embodiment of this application further provides a pulling member. As shown in FIG. 18, FIG. 18 briefly shows an embodiment of the pulling member. The pulling member includes an elastic member 311, one end of the elastic member 311 is connected to the pressing member 303, and the other end of the elastic member 311 is connected to the watch clasp 301. The elastic member 311 is configured to apply an elastic force in the direction toward the rack 302 to the clamping structure 304. In this way, when the pressing member is not pressed, the clamping structure 304 may be tightly attached to the tooth slot, to improve reliability of the entire system.

[0176] FIG. 19 shows another manner of disposing the elastic member 311. The pressing member includes a first pressing member 3031 and a second pressing member 3032. There is a gap between a clamping structure 304 at an end part of the first pressing member 3031 and a first part 303A of the second pressing member 3032. The elastic member 311 may be disposed in the gap and is connected to both the clamping structure 304 and the first part 303A.

[0177] There is a gap between a clamping structure 304 at an end part of the second pressing member 3032 and a first part 303A of the first pressing member 3031. The elastic member 311 may be disposed in the gap and is connected to both the clamping structure 304 and the first part 303A.

[0178] When the elastic member 311 is connected between the watch clasp 301 and the pressing member 303 as shown in FIG. 18, the elastic member 311 is mounted in a plurality of manners. As shown in FIG. 20, a hole 3016 through which the pressing member 303 passes is provided on the watch clasp 301, and the elastic member 311 may be disposed in the hole 3016. One end of the elastic member 311 abuts against the watch clasp 301, and the other end of the elastic member 311 abuts against the pressing member 303.

[0179] When the pressing member 303 is pressed, to limit a movement distance of the pressing member 303, as shown in FIG. 21, a limiting structure 310 may be disposed, and the limiting structure 310 limits a movement distance of the pressing member 303 in a third direction. The third direction is perpendicular to or nearly perpendicular to the extension direction of the first strap body 10.

[0180] In some implementations, as shown in FIG. 21, the limiting structure 310 includes a limiting slot 3101 and a limiting post 3102 disposed in the limiting slot 3101. An extension direction of the limiting slot 3101 is parallel to the third direction. One of the limiting slot 3101 and the limiting post 3102 is disposed on the pressing member 303, and the other is disposed on the watch clasp 301. For example, in the example shown in FIG. 21, the limiting slot 3101 is provided on the watch clasp 301, and the limiting post 3102 is disposed on the pressing member 303.

[0181] In some other implementations, a structural member may be disposed on the watch clasp 301. A limiting cavity is enclosed by the structural member, and the clamping structure is disposed in the limiting cavity. A movement distance of the clamping structure is limited through the limiting cavity, to limit a movement distance of the pressing member.

[0182] To implement connection between the first strap body and the second strap body, as shown in FIG. 22 and FIG. 23, FIG. 22 shows an exploded view of a partial structure of the wearable device, and FIG. 23 is another view of FIG. 22. The watch strap provided in this embodiment of this application may further include a first plate 40 and a second plate 50. One end of the first plate 40 is rotatably connected to the watch clasp 301, and the other end of the first plate 40 is rotatably connected to the second plate 50. For example, one end of the first plate 40 is rotatably connected to the watch clasp 301 through a rotating shaft 601, and the other end of the first plate 40 is rotatably connected to the second plate 50 through a rotating shaft 602.

[0183] The second plate 50 may be connected to the watch clasp 301 through a snap-fit fastener 70. The snap-fit fastener 70 may include a fastener 702 and a snap-fit slot 701. One of the fastener 702 and the snap-fit slot 701 is provided on the watch clasp 301, and the other is disposed on the second plate 50. For example, in the example shown in FIG. 23, the fastener 702 is disposed on the watch clasp 301, and the snap-fit slot 701 is provided on the second plate 50.

[0184] The second plate 50 is configured to connect to the second strap body. For example, in FIG. 23, the second plate 50 has a mounting cavity 501 for the second strap body to pass through.

[0185] In some examples, as shown in FIG. 22 and FIG. 23, there may be two first plates 40, and there may be one second plate 50. The one second plate 50 may be disposed between the two first plates 40. In some other examples, there may be one first plate 40, and there may be two second plates 50. The one first plate 40 is disposed between the two second plates 50. In some other examples, there may be more first plates 40 and second plates 50.

[0186] In this example of this application, as shown in FIG. 23, the limiting post 3092 for limiting the movement distance of the rack 302 not only can perform a limiting function, but also can connect the first housing and the second housing of the watch clasp 301. In some examples, the limiting post may extend from an outer wall surface of the watch clasp 301 to the watch clasp 301.

[0187] To improve appearance aesthetics of the entire device, a counterbore 3017 may be provided on the outer wall surface of the watch clasp 301, and the limiting post 3092 is disposed in the counterbore 3017.

[0188] As shown in FIG. 23, at least a part of the rotating shaft 601 that is rotatably connected to the first plate 40 and the watch clasp 301 may be hidden inside the watch clasp. For example, a shaft hole 3018 may be provided in the watch clasp 301, and the rotating shaft 601 that is rotatably connected to the first plate 40 and the watch clasp 301 is disposed in the shaft hole 3018. Compared with disposing a protruding member on the outer wall surface of the watch clasp and disposing the rotating shaft on the protruding member, in this application, a thickness size of the device may be reduced.

[0189] In the foregoing embodiment, the length of the watch strap is finely adjusted by moving the strap body, to accurately adapt to the wrist. Embodiments of this application further provide some other structures that can be used to finely adjust the length of the watch strap, as shown in the following.

[0190] As shown in FIG. 24 and FIG. 25, FIG. 24 is a diagram of a partial structural of the watch strap according to an embodiment of this application, and FIG. 25 is an exploded view of FIG. 24. In this example of this application, the watch clasp 301 is disposed at the end part of the first strap body 10, and further includes the first plate 40 and the second plate 50. The first plate 40 is fastened to the watch clasp 301. For example, the first plate 40 may be fastened to the watch clasp 301 through a fastening member 80 shown in FIG. 25. The second plate 50 is configured to connect to the second strap body 20, and the second plate 50 is in snap fit with the watch clasp 301. In addition, the first plate 40 is rotatably connected to the second plate 50.

[0191] In this example of this application, at least one of the first plate 40 and the second plate 50 is a telescopic plate. For example, as shown in FIG. 26, the first plate 40 fastened to the watch clasp 301 may be a telescopic plate, that is, the first plate 40 is telescopic in a length direction R of the first plate 40. For another example, as shown in FIG. 27, the second plate 50 that is rotatably connected to the first plate 40 may be a telescopic plate, that is, the second plate 50 is telescopic in a length direction R of the second plate 50. For another example, both the first plate 40 and the second plate 50 may be telescopic plates.

[0192] As shown in FIG. 26 and FIG. 27, a connection position between the second plate 50 and the watch clasp 301 includes a first stop position and a second stop position. When at least one of the first plate 40 and the second plate 50 is extended / retracted, the connection position between the second plate 50 and the watch clasp 301 may be switched between the first stop position and the second stop position.

[0193] For example, when the telescopic plate is extended, the connection position between the second plate 50 and the watch clasp 301 may be at the first stop position, and a radial size of a ring enclosed by the first strap body and the second strap body may be decreased, to shorten the watch strap. When the telescopic plate is retracted, the connection position between the second plate 50 and the watch clasp 301 is at the second stop position, and a radial size of a ring enclosed by the first strap body and the second strap body may be increased, to extend the watch strap.

[0194] To implement extension and retraction of the telescopic plate, the telescopic plate has a plurality of implementations.

[0195] For another example, the telescopic plate may be made of a telescopic material.

[0196] For another example, as shown in FIG. 28, FIG. 28 is a diagram of a simplified structure of a telescopic plate according to an embodiment of this application. The telescopic plate may include a first telescopic segment 901 and a second telescopic segment 902. The first telescopic segment 901 and the second telescopic segment 902 are connected to each other through an elastic member 903. To be specific, one end of the elastic member 903 is connected to the first telescopic segment 901, and the other end of the elastic member 903 is connected to the second telescopic segment 902. The elastic member 903 is configured to apply an elastic force to the second telescopic segment 902 and an elastic force to the first telescopic segment 901 for relative extension. For example, when the elastic member 903 is in a first state, the connection position between the second plate 50 and the watch clasp 301 is at the first stop position. When the elastic member 903 is in a second state, the connection position between the second plate 50 and the watch clasp 301 is at the second stop position.

[0197] In the example in FIG. 28, the first plate 40 fastened to the watch clasp 301 includes a first telescopic segment 901 and a second telescopic segment 902. In another example, the second plate 50 that is rotatably connected to the first plate 40 may include a first telescopic segment 901, a second telescopic segment 902, and an elastic member 903 that connects the first telescopic segment 901 to the second telescopic segment 902.

[0198] To improve stability of extension and retraction, in some examples, as shown in FIG. 28, a sliding slot 904 may be provided on the second telescopic segment 902, and an extension direction of the sliding slot 904 is parallel to extension / retraction directions of the two telescopic segments. A guide post 905 may be further disposed on the first telescopic segment 901. The guide post 905 is fastened to the first telescopic segment 901, and the guide post 905 extends into the sliding slot 904 and is slidable in an extension direction of the sliding slot 904.

[0199] The elastic member 903 is disposed in the sliding slot 904, one end of the elastic member 903 is connected to the guide post 905, and the other end of the elastic member 903 is connected to the second telescopic segment 902.

[0200] In the example in FIG. 28, the first plate 40 fastened to the watch clasp 301 includes a first telescopic segment 901 and a second telescopic segment 902. The first telescopic segment 901 is fastened to the watch clasp 301, the second telescopic segment 902 is rotatably connected to the second plate 50, a sliding slot 904 may be provided on the second telescopic segment 902, and a guide post 905 is fastened to the first telescopic segment 901.

[0201] In another implementable structure, a sliding slot 904 may be provided on the first telescopic segment 901, and a guide post 905 is fastened to the second telescopic segment 902.

[0202] In this way, the first telescopic segment 901 and the second telescopic segment 902 are in an extended state under an elastic force of the elastic member 903, so that the connection position between the second plate 50 and the watch clasp 301 is at a stop position. When the user applies an action force to the first telescopic segment 901 or the second telescopic segment 902, the connection position between the second plate 50 and the watch clasp 301 may be at another stop position.

[0203] The following provides, with reference to the accompanying drawings, two manners of switching a stop position. Details are as follows.

[0204] Example 1: As shown in FIG. 28, the sliding slot 904 has a first end and a second end, the first end is farther away from a connection position, namely, a position A, between the second telescopic segment 902 and the second plate 50 than the second end, and the first stop position is farther away from the connection position, namely, the position A, between the second telescopic segment 902 and the second plate 50 than the second stop position.

[0205] When the guide post 905 is located at the first end of the sliding slot 904, an elastic force applied by the elastic member 903 to the first telescopic segment 901 and the watch clasp 301 is applied toward the watch clasp 301 (as shown by a black solid line with an arrow in FIG. 28), and an elastic force applied by the elastic member 903 to the second telescopic segment 902 is applied away from the watch clasp 301 (as shown by a black dashed line with an arrow in FIG. 28). In this way, the connection position between the second plate 50 and the watch clasp 301 is at the first stop position, thereby implementing tight wearing.

[0206] As shown in FIG. 29, when a pushing force is applied to the watch clasp 301, the pushing force is applied toward the first telescopic segment 901. Under the action of the pushing force, when the guide post 905 slides from the first end to the second end, the connection position between the second plate 50 and the watch clasp 301 can be switched from the first stop position to the second stop position, thereby implementing loose wearing.

[0207] In another example, as shown in FIG. 30, when the guide post 905 is located at the second end of the sliding slot 904, an elastic force applied by the elastic member 903 to the first telescopic segment 901 and the watch clasp 301 is applied away from the watch clasp 301 (as shown by a black solid line with an arrow in FIG. 30), and an elastic force applied by the elastic member 903 to the second telescopic segment 902 is applied toward the watch clasp 301 (as shown by a black dashed line with an arrow in FIG. 30). In this way, the connection position between the second plate 50 and the watch clasp 301 is at the second stop position, thereby implementing loose wearing.

[0208] As shown in FIG. 31, when a pulling force is applied to the watch clasp 301, the pulling force is applied away from the first telescopic segment 901. Under the action of the pulling force, when the guide post 905 slides from the second end to the first end, the connection position between the second plate 50 and the watch clasp 301 can be switched from the second stop position to the first stop position, thereby implementing tight wearing.

[0209] FIG. 32 shows an example of an implementable structure of the first telescopic segment 901 and the second telescopic segment 902. A part of the second telescopic segment 902 is sleeved in the first telescopic segment 901. The first telescopic segment 901 may include a bottom plate 901B and a cover plate 901A. The bottom plate 901B and the cover plate 901A are snap-fitted, and an empty cavity for accommodating the second telescopic segment 902 is formed inside. In this way, the elastic member 903 can be hidden in the cavity, thereby improving appearance aesthetics of the device.

[0210] In the example shown in FIG. 32, the second telescopic segment 902 is sleeved in the first telescopic segment 901. In some other examples, the first telescopic segment 901 may alternatively be sleeved in the second telescopic segment 902.

[0211] To limit an extension / retraction amount between the first telescopic segment 901 and the second telescopic segment 902, the wearable device may further include a limiting structure, and the limiting structure is configured to limit a movement amount of the first telescopic segment 901 or the second telescopic segment 902.

[0212] FIG. 33 shows an example of a limiting structure. The limiting structure may include a limiting post 907 and a limiting slot 906. The limiting post 907 may slide along the limiting slot 906. One of the limiting post 907 and the limiting slot 906 is provided on the first telescopic segment 901, and the other is disposed on the second telescopic segment 902. For example, in FIG. 33, the limiting post 907 is disposed on the first telescopic segment 901, and the limiting slot 906 is provided on the second telescopic segment 902.

[0213] In FIG. 33, the limiting structure is closer to a connection position between the second plate 50 and the first plate 40 than the elastic member 903. Certainly, in some examples, the elastic member 903 may be closer to a connection position between the second plate 50 and the first plate 40.

[0214] To enable the connection position between the second plate 50 and the watch clasp 301 to switch between the first stop position and the second stop position, a snap-fit structure may be disposed. As shown in FIG. 34, a bump 3019 may be disposed on the watch clasp 301, and the second plate 50 is provided with a first snap-fit slot 501 and a second snap-fit slot 502. The first snap-fit slot 501 and the second snap-fit slot 502 are arranged in an extension / retraction direction, and the first snap-fit slot 501 is farther away from the connection position between the second plate and the first plate than the second snap-fit slot 502. When the bump 3019 is located in the first snap-fit slot 501, the connection position between the second plate 50 and the watch clasp 301 is at the first stop position. When the bump 3019 is located in the second snap-fit slot 502, the connection position between the second plate 50 and the watch clasp 301 is at the second stop position.

[0215] In the example shown in FIG. 34, the bump 3019 is disposed on the watch clasp 301, and the first snap-fit slot 501 and the second snap-fit slot 502 are provided on the second plate 50. Alternatively, the bump 3019 may be disposed on the second plate 50, and the first snap-fit slot 501 and the second snap-fit slot 502 may be provided on the watch clasp 301.

[0216] In the foregoing example of this application, the first stop position and the second stop position that can be switched are included. In some implementable structures, more switching stop positions may be disposed. For example, based on the structure in FIG. 34, more snap-fit slots may be provided, and switching between different stop positions is implemented by switching the bump 3019 between at least three snap-fit slots. In this way, an adjustment amount of the watch strap can be further increased, or an adjustment amount of the watch strap can be smaller, and the watch strap can be more accurately adapted to the wrist.

[0217] In the foregoing structure in which the stop position is switched through the telescopic plate, there may be two first plates 40, and there may be one second plate 50. The one second plate 50 may be disposed between the two first plates 40. In some other examples, there may be one first plate 40, and there may be two second plates 50. The one first plate 40 is disposed between the two second plates 50. In some other examples, there may be more first plates 40 and second plates 50.

[0218] Based on the foregoing description, this application provides two implementable structures for finely adjusting the watch strap. One is to move the strap body, and the other is to switch the stop position. In some wearable devices, not only a manner of moving a strap body may be used, but also a manner of switching a stop position may be used.

[0219] As shown in FIG. 35, in a wearable device shown in FIG. 35, structures like a rack that drives a strap body to move, a pressing member for pressing, and the like are disposed in the watch clasp 301. In addition, a telescopic plate that can be extended and retracted, for example, a first telescopic segment 901 or a second telescopic segment 902 shown in FIG. 35, is further included. In this way, a fine adjustment amount of the watch strap can be further reduced, use performance of the device can be improved, and user experience can be improved.

[0220] In FIG. 35, because the telescopic plate is fastened to the watch clasp 301, the watch strap further needs to move relative to the watch clasp 301. In an example, the watch strap may include a first strap body segment 10A, and a second strap body segment 10B that is rotatably connected to the first strap body segment 10A. The first strap body segment 10A may slide along the watch clasp 301, the first strap body segment 10A may be fastened to the rack, and the second strap body segment 10B may be rotatably connected to the first strap body segment 10A through a rotating shaft 10C.

[0221] In the descriptions of this specification, the described specific features, structures, materials, or characteristics may be combined in a proper manner in any one or more of embodiments or examples.

[0222] 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. A watch strap connection structure, wherein the watch strap connection structure is configured to connect to a first strap body of a watch strap, and the watch strap connection structure comprises: a watch clasp; a rack, disposed on the watch clasp, wherein the rack is movable in an extension direction of the first strap body, and the rack is configured to fasten to the first strap body; and a pressing member, disposed on the watch clasp, wherein the pressing member has a clamping structure that fits the rack, and the pressing member is movable in a direction intersecting the extension direction of the first strap body, for the clamping structure to enter or exit tooth slots of the rack.

2. The watch strap connection structure according to claim 1, wherein the watch strap connection structure further comprises a first elastic member; when the rack moves in a first direction, the first elastic member is configured to apply an elastic force in a second direction to the rack; and the first direction is opposite to the second direction, and both the first direction and the second direction are parallel to the extension direction of the first strap body.

3. The watch strap connection structure according to claim 2, wherein one end of the first elastic member is connected to the watch clasp, and the other end of the first elastic member is connected to the rack; and the first direction is a direction from the first strap body to the rack, and the second direction is a direction from the rack to the first strap body.

4. The watch strap connection structure according to claim 2 or 3, wherein the rack is provided with a mounting slot, the mounting slot has a first end and a second end, the first end of the mounting slot is farther away from the first strap body than the second end of the mounting slot, and the first elastic member is located in the mounting slot; an abutting member is disposed on the watch clasp, and the abutting member is located at the first end of the mounting slot; and one end of the first elastic member abuts against the abutting member, and the other end of the first elastic member abuts against the rack.

5. The watch strap connection structure according to claim 4, wherein the mounting slot comprises a first segment and a second segment that communicate with each other, a slot width of the first segment is greater than a slot width of the second segment, a part of the first elastic member is located in the first segment, and the other part of the first elastic member is located in the second segment.

6. The watch strap connection structure according to any one of claims 1 to 5, wherein the watch strap connection structure further comprises a first limiting structure; and the first limiting structure is configured to limit a movement distance of the rack in the extension direction of the first strap body.

7. The watch strap connection structure according to claim 6, wherein the first limiting structure comprises: a first limiting slot and a first limiting post disposed in the first limiting slot, wherein an extension direction of the first limiting slot is parallel to the extension direction of the first strap body; and one of the first limiting slot and the first limiting post is disposed on the rack, and the other is disposed on the watch clasp.

8. The watch strap connection structure according to any one of claims 1 to 7, wherein the watch strap connection structure further comprises a second elastic member; one end of the second elastic member is connected to the pressing member, and the other end of the second elastic member is connected to the watch clasp; and the second elastic member is configured to apply an elastic force in a direction toward the rack to the clamping structure.

9. The watch strap connection structure according to any one of claims 1 to 8, wherein the watch strap connection structure further comprises a second limiting structure; and the second limiting structure is configured to limit a movement distance of the pressing member in a third direction, wherein the third direction intersects the extension direction of the first strap body.

10. The watch strap connection structure according to claim 9, wherein the second limiting structure comprises: a second limiting slot and a second limiting post disposed in the second limiting slot, wherein an extension direction of the second limiting slot is perpendicular to the extension direction of the first strap body; and one of the second limiting slot and the second limiting post is disposed on the pressing member, and the other is disposed on the watch clasp.

11. The watch strap connection structure according to any one of claims 1 to 10, wherein the tooth slots of the rack comprise a first column of tooth slots and a second column of tooth slots, the first column of tooth slots and the second column of tooth slots are provided on two opposite sides of the rack, and the first column of tooth slots and the second column of tooth slots are parallel to the extension direction of the first strap body; the pressing member comprises a first pressing member and a second pressing member, and the first pressing member and the second pressing member are disposed on two opposite sides of the watch clasp; either of the first pressing member and the second pressing member comprises a first part and a second part connected to the first part, the first part is located outside the watch clasp, the second part extends into the watch clasp, and the clamping structure is disposed at an end part that is of the second part and that is away from the first part; and a clamping structure of the first pressing member fits the first column of tooth slots, and a clamping structure of the second pressing member fits the second column of tooth slots.

12. The watch strap connection structure according to claim 11, wherein the first column of tooth slots are closer to the first part of the second pressing member than the second column of tooth slots; the second column of tooth slots are closer to the first part of the first pressing member than the first column of tooth slots; the second part of the first pressing member crosses the second column of tooth slots, for the clamping structure of the first pressing member to fit the first column of tooth slots; and the second part of the second pressing member crosses the first column of tooth slots, for the clamping structure of the second pressing member to fit the second column of tooth slots.

13. The watch strap connection structure according to any one of claims 1 to 12, wherein the watch clasp is provided with a first sliding slot, an extension direction of the first sliding slot is parallel to the extension direction of the first strap body, and the first strap body is slidable along the first sliding slot.

14. The watch strap connection structure according to any one of claims 1 to 13, wherein the watch strap connection structure further comprises: a first plate and a second plate, wherein one end of the first plate is rotatably connected to the watch clasp, the other end of the first plate is rotatably connected to the second plate, the second plate is connected to the watch clasp, the watch clasp is configured to connect to the first strap body, and the second plate is configured to connect to a second strap body of the watch strap.

15. The watch strap connection structure according to any one of claims 1 to 13, wherein the watch strap connection structure further comprises: a first plate and a second plate, wherein one end of the first plate is fastened to the watch clasp, the other end of the first plate is rotatably connected to the second plate, the second plate is connected to the watch clasp, the watch clasp is configured to connect to the first strap body, and the second plate is configured to connect to a second strap body of the watch strap; at least one of the first plate and the second plate is a telescopic plate; and a connection position between the second plate and the watch clasp comprises a first stop position and a second stop position, and when the telescopic plate is extended / retracted, the connection position between the second plate and the watch clasp is capable of being switched between the first stop position and the second stop position.

16. The watch strap connection structure according to claim 15, wherein the telescopic plate comprises a first telescopic segment and a second telescopic segment; and the watch strap connection structure further comprises: a third elastic member, wherein one end of the third elastic member is connected to the first telescopic segment, the other end of the third elastic member is connected to the second telescopic segment, and the third elastic member is configured to apply an elastic force to the second telescopic segment and an elastic force to the first telescopic segment for relative extension, wherein when the third elastic member is in a first state, the connection position between the second plate and the watch clasp is at the first stop position; or when the third elastic member is in a second state, the connection position between the second plate and the watch clasp is at the second stop position.

17. The watch strap connection structure according to claim 16, wherein the watch strap connection structure further comprises: a second sliding slot, wherein the second sliding slot is provided on the second telescopic segment, and an extension direction of the second sliding slot is parallel to an extension / retraction direction of the second telescopic segment; a guide post, wherein the guide post is fastened to the first telescopic segment, and the guide post is located in the second sliding slot and is slidable in the extension direction of the second sliding slot; and the third elastic member is disposed in the second sliding slot, one end of the third elastic member abuts against the guide post, and the other end of the third elastic member abuts against the second telescopic segment.

18. The watch strap connection structure according to claim 17, wherein the first plate comprises the first telescopic segment and the second telescopic segment, the first telescopic segment is fastened to the watch clasp, and the second telescopic segment is rotatably connected to the second plate.

19. The watch strap connection structure according to claim 17 or 18, wherein the second sliding slot has a first end and a second end, and the first end of the second sliding slot is farther away from a connection position between the second telescopic segment and the second plate than the second end; the first stop position is farther away from the connection position between the second telescopic segment and the second plate than the second stop position; when the guide post is located at the first end of the second sliding slot, the connection position between the second plate and the watch clasp is at the first stop position; and under a first action force, when the guide post slides from the first end to the second end, the connection position between the second plate and the watch clasp is capable of being switched from the first stop position to the second stop position, wherein the first action force is applied toward the watch clasp.

20. The watch strap connection structure according to claim 17 or 18, wherein the second sliding slot has a first end and a second end, and the first end of the second sliding slot is farther away from a connection position between the second telescopic segment and the second plate than the second end; the first stop position is farther away from the connection position between the second telescopic segment and the second plate than the second stop position; when the guide post is located at the second end of the second sliding slot, the connection position between the second plate and the watch clasp is at the second stop position; and under a second action force, when the guide post slides from the second end to the first end, the connection position between the second plate and the watch clasp is capable of being switched from the second stop position to the first stop position, wherein the second action force is applied away from the watch clasp.

21. The watch strap connection structure according to any one of claims 16 to 20, wherein the first telescopic segment has a cavity inside, and at least a part of the second telescopic segment extends into the cavity; and the third elastic member is disposed in the cavity.

22. The watch strap connection structure according to any one of claims 16 to 21, wherein the watch strap connection structure further comprises: a fastener and a snap-fit slot, wherein one of the fastener and the snap-fit slot is provided on the watch clasp, and the other is disposed on the second plate; the snap-fit slot comprises a first snap-fit slot and a second snap-fit slot, the first snap-fit slot and the second snap-fit slot are arranged in the extension / retraction direction of the second telescopic segment, and the first snap-fit slot is farther away from the connection position between the second telescopic segment and the second plate than the second snap-fit slot; and when the fastener is located in the first snap-fit slot, the connection position between the second plate and the watch clasp is at the first stop position, or when the fastener is located in the second snap-fit slot, the connection position between the second plate and the watch clasp is at the second stop position.

23. The watch strap connection structure according to any one of claims 16 to 22, wherein the watch strap connection structure further comprises a third limiting structure, and the third limiting structure is configured to limit an extension / retraction amount of the second telescopic segment relative to the first telescopic segment.

24. The watch strap connection structure according to claim 23, wherein the third limiting structure comprises a third limiting slot and a third limiting post disposed in the third limiting slot; an extension direction of the third limiting slot is parallel to an extension direction of the second telescopic segment; and one of the third limiting slot and the third limiting post is disposed on the first telescopic segment, and the other is disposed on the second telescopic segment.

25. A watch strap, comprising: a first strap body; and the watch strap connection structure according to any one of claims 1 to 24, wherein the rack of the watch strap connection structure is fastened to the first strap body.

26. The watch strap according to claim 25, wherein the watch strap further comprises a second strap body; the watch strap connection structure comprises the first plate and the second plate, one end of the first plate is rotatably connected to the watch clasp, the other end of the first plate is rotatably connected to the second plate, the second plate is connected to the watch clasp, and the second plate is connected to the second strap body; and the watch clasp is provided with a third sliding slot, an extension direction of the third sliding slot is parallel to an extension direction of the first strap body, and the first strap body segment is slidable along the third sliding slot.

27. The watch strap according to claim 25, wherein the watch strap further comprises a second strap body; the watch strap connection structure comprises the first plate and the second plate, one end of the first plate is fastened to the watch clasp, the other end of the first plate is rotatably connected to the second plate, the second plate is connected to the watch clasp, and the second plate is connected to the second strap body; at least one of the first plate and the second plate is a telescopic plate; a connection position between the second plate and the watch clasp comprises a first stop position and a second stop position, and when the telescopic plate is extended / retracted, the connection position between the second plate and the watch clasp is capable of being switched between the first stop position and the second stop position; the first strap body comprises a first strap body segment and a second strap body segment; the watch clasp is provided with a third sliding slot, an extension direction of the third sliding slot is parallel to an extension direction of the first strap body, and the first strap body segment is slidable along the third sliding slot; and the first strap body segment is rotatably connected to the second strap body segment.

28. A watch strap connection structure, wherein the watch strap connection structure is configured to connect to a first strap body and a second strap body of a watch strap, and the watch strap connection structure comprises: a watch clasp; and a first plate and a second plate, wherein one end of the first plate is fastened to the watch clasp, the other end of the first plate is rotatably connected to the second plate, the second plate is connected to the watch clasp, the watch clasp is configured to connect to the first strap body, and the second plate is configured to connect to the second strap body, wherein at least one of the first plate and the second plate is a telescopic plate; and a connection position between the second plate and the watch clasp comprises a first stop position and a second stop position, and when the telescopic plate is extended / retracted, the connection position between the second plate and the watch clasp is capable of being switched between the first stop position and the second stop position.

29. The watch strap connection structure according to claim 28, wherein the telescopic plate comprises a first telescopic segment and a second telescopic segment; and the watch strap connection structure further comprises: an elastic member, wherein one end of the elastic member is connected to the first telescopic segment, the other end of the elastic member is connected to the second telescopic segment, and the elastic member is configured to apply an elastic force to the second telescopic segment and an elastic force to the first telescopic segment for relative extension, wherein when the elastic member is in a first state, the connection position between the second plate and the watch clasp is at the first stop position; or when the elastic member is in a second state, the connection position between the second plate and the watch clasp is at the second stop position.

30. The watch strap connection structure according to claim 29, wherein the watch strap connection structure further comprises: a sliding slot, wherein the sliding slot is provided on the second telescopic segment, and an extension direction of the sliding slot is parallel to an extension / retraction direction of the second telescopic segment; and a guide post, wherein the guide post is fastened to the first telescopic segment, and the guide post is located in the sliding slot and is slidable in the extension direction of the sliding slot; and the elastic member is disposed in the sliding slot, one end of the elastic member abuts against the guide post, and the other end of the elastic member abuts against the second telescopic segment.

31. The watch strap connection structure according to claim 30, wherein the first plate comprises the first telescopic segment and the second telescopic segment, the first telescopic segment is fastened to the watch clasp, and the second telescopic segment is rotatably connected to the second plate.

32. The watch strap connection structure according to claim 30 or 31, wherein the sliding slot has a first end and a second end, and the first end of the sliding slot is farther away from a connection position between the second telescopic segment and the second plate than the second end; the first stop position is farther away from the connection position between the second telescopic segment and the second plate than the second stop position; when the guide post is located at the first end of the sliding slot, the connection position between the second plate and the watch clasp is at the first stop position; and under a first action force, when the guide post slides from the first end to the second end, the connection position between the second plate and the watch clasp is capable of being switched from the first stop position to the second stop position, wherein the first action force is applied toward the watch clasp.

33. The watch strap connection structure according to claim 30 or 31, wherein the sliding slot has a first end and a second end, and the first end of the sliding slot is farther away from a connection position between the second telescopic segment and the second plate than the second end; the first stop position is farther away from the connection position between the second telescopic segment and the second plate than the second stop position; when the guide post is located at the second end of the sliding slot, the connection position between the second plate and the watch clasp is at the second stop position; and under a second action force, when the guide post slides from the second end to the first end, the connection position between the second plate and the watch clasp is capable of being switched from the second stop position to the first stop position, wherein the second action force is applied away from the watch clasp.

34. The watch strap connection structure according to any one of claims 29 to 33, wherein the first telescopic segment has a cavity inside, and at least a part of the second telescopic segment extends into the cavity; and the elastic member is disposed in the cavity.

35. The watch strap connection structure according to any one of claims 29 to 34, wherein the watch strap connection structure further comprises a limiting structure, and the limiting structure is configured to limit an extension / retraction amount of the second telescopic segment relative to the first telescopic segment.

36. The watch strap connection structure according to claim 35, wherein the limiting structure comprises a limiting slot and a limiting post disposed in the limiting slot; an extension direction of the limiting slot is parallel to an extension direction of the second telescopic segment; and one of the limiting slot and the limiting post is disposed on the first telescopic segment, and the other is disposed on the second telescopic segment.

37. The watch strap connection structure according to any one of claims 29 to 36, wherein the watch strap connection structure further comprises: a fastener and a snap-fit slot, wherein one of the fastener and the snap-fit slot is provided on the watch clasp, and the other is disposed on the second plate; the snap-fit slot comprises a first snap-fit slot and a second snap-fit slot, the first snap-fit slot and the second snap-fit slot are arranged in the extension / retraction direction of the second telescopic segment, and the first snap-fit slot is farther away from the connection position between the second telescopic segment and the second plate than the second snap-fit slot; and when the fastener is located in the first snap-fit slot, the connection position between the second plate and the watch clasp is at the first stop position, or when the fastener is located in the second snap-fit slot, the connection position between the second plate and the watch clasp is at the second stop position.

38. A watch strap, comprising: a first strap body and a second strap body; and the watch strap connection structure according to any one of claims 28 to 37, wherein the first strap body is rotatably connected to the watch clasp, and the second strap body is connected to the second plate.

39. A wearable device, comprising: a watch face; and the watch strap according to claim 25, 26, 27, or 38, wherein the watch strap is connected to the watch face.

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