Watchband connection structure, watchband, and wearable device

Abstract

A watchband connection structure, a watchband, and a wearable device, relating to the technical field of electronic devices. The watchband comprises a band body and a watchband connection structure (30) connected to the band body. The watchband connection structure (30) comprises a clasp (301), a rack (302), and pressing members (303). The clasp (301) is disposed on the band body; the rack (302) is disposed on the clasp (301), is capable of moving along the extension direction of the band body, and is fixedly connected to the band body; the pressing members (303) are disposed on the clasp (301), and each are provided with a snap-fit structure (304) fitting the rack (302), and the pressing members (303) are capable of moving in a direction intersecting the extension direction of the band body, so that each snap-fit structure (304) enters and exits a corresponding tooth space (305) of the rack (302). The rack (302) is used to drive the band body to move, so that the band body can move by a width of one tooth space (305) or a width of a plurality of tooth spaces (305), thereby achieving fine adjustment of the length of the watchband.

Description

Watch strap connection structure, watch strap and wearable device

[0001] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office on November 27, 2023, with application number 202311604128.4 and invention name “Watch strap connection structure, watch strap and wearable device”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the technical field of electronic devices, 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 Art

[0003] Wearable devices generally refer to miniature electronic devices that can be worn on the body for activities, and primarily include smart watches and smart bracelets. Smart watches and smart bracelets can be used independently or as portable accessories for mobile devices.

[0004] Currently, most wearable devices have multiple holes on the strap, allowing the wearer to adjust the strap length. However, due to the limited hole spacing, the strap often becomes too loose or too tight, making it impossible to accurately fit the wrist and providing an optimal wearing experience.

[0005] Summary of the Invention

[0006] The present 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. The purpose is to provide a structure that can fine-tune the length of the watch strap to accurately fit the wrist.

[0007] To achieve the above objectives, the embodiments of the present application adopt the following technical solutions:

[0008] In a first aspect, the present application provides a watch strap that can be used in a wearable device, such as a watch.

[0009] The watch strap provided in the present application includes: a first strap body and a strap connection structure connected to the first strap body; the strap connection structure includes a buckle, a rack and a pressing piece, the buckle is set on the first strap body, the rack is set on the buckle, the rack can move along the extension direction of the first strap body, and the rack is fixedly connected to the first strap body, the pressing piece is set on the buckle, and the pressing piece has a clamping structure that matches the rack, and the pressing piece can move along a direction intersecting with the extension direction of the first strap body so that the clamping structure enters and exits the tooth groove of the rack.

[0010] In the watch strap provided by the present application, for example, when the length of the watch strap needs to be shortened to achieve a tight wear, the strap body can be pushed toward the buckle. Since the rack and the strap body are fixedly connected, and the rack can move along the extension direction of the strap body, the strap body and the rack fixedly connected together will move under the action of this thrust. For example, under this thrust, the width of one tooth groove or the width of more tooth grooves can be moved as needed to shorten the length of the watch strap; for another example, when the length of the watch strap needs to be extended to achieve a loose wear, the pressing piece can be pressed to disengage the clamping structure on the pressing piece from the tooth groove of the rack, and the connected rack and strap body move in the direction away from the buckle to extend the length of the watch strap, thereby achieving fine-tuning of the length of the watch strap.

[0011] In one possible implementation, the watch strap also includes a first elastic member; when the rack and the first strap body move along the first direction, the first elastic member is used to give the first strap body an elastic force along the second direction; the first direction is opposite to the second direction, and the first direction and the second direction are both parallel to the extension direction of the first strap body.

[0012] By using the first elastic member, the watch strap can be automatically rebounded. For example, after the watch strap is shortened, the watch strap can be automatically extended by pressing the pressing member; or, after the watch strap is extended, the watch strap can be automatically shortened by pressing the pressing member.

[0013] In one possible implementation, one end of the first elastic member is connected to the clasp, and the other end is connected to the rack; the first direction is from the first strap to the rack, and the second direction is from the rack to the first strap.

[0014] When the first strap is pushed toward the direction of the buckle (such as the first direction mentioned above) to shorten the length of the strap, the first elastic member is compressed under the action of the thrust, generating a thrust toward the first strap (such as the second direction mentioned above). Then, when the pressing member is pressed to extend the length of the strap, the clamping structure on the pressing member disengages from the tooth groove of the rack, and the rack and the first strap automatically rebound under the thrust of the first elastic member along the second direction, thereby realizing automatic extension of the strap without the user having to stretch the first strap, thereby improving the user experience.

[0015] In one feasible manner, a mounting groove is provided on the rack, the mounting groove having a first end and a second end, the first end being farther away from the first strap body than the second end, and the first elastic member is located in the mounting groove; an abutment member is provided on the clasp, the abutment member is located at the first end of the mounting groove; one end of the first elastic member abuts against the abutment member, and the other end abuts against the rack.

[0016] This can make the entire structure more compact and reduce the size of the entire structure.

[0017] In one achievable manner, the mounting groove includes a first section and a second section that are connected, the groove width of the first section is greater than the groove width of the second section, part of the first elastic member is located in the first section, and the other part is located in the second section.

[0018] The mounting groove for setting the elastic part is set to a first section with a wide groove and a second section with a narrow groove. The second section with a narrow groove can constrain the elastic part so that the elastic part deforms along its axial direction. The first section with a wide groove can be loosely matched with the elastic part, that is, the elastic part does not contact the wall of the groove, so that the elastic part can be freely extended and retracted.

[0019] In one achievable manner, the second section of the mounting groove is closer to the first belt body than the first section.

[0020] In one practicable manner, the watch strap further includes: a first limiting structure, the first limiting structure being used to limit the distance that the rack moves along the extending direction of the first strap body.

[0021] In one achievable method, the first limiting structure includes: a first limiting groove and a first limiting column arranged in the first limiting groove; the extension direction of the first limiting groove is parallel to the extension direction of the first belt body; one of the first limiting groove and the first limiting column is arranged on the rack, and the other is arranged on the clasp.

[0022] The first limiting structure can be used to limit the moving distance of the rack, thereby preventing the rack from moving a large amount when the user pushes the belt body, thereby affecting the user experience.

[0023] In one possible 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 is connected to the buckle; the second elastic member is used to give the snap-fit ​​structure an elastic force toward the rack direction.

[0024] The elastic force of the clamping structure toward the rack is given by an elastic part, which can increase the adhesion between the clamping structure and the rack. Regardless of whether the strap is worn tightly or loosely, the clamping structure of the pressing part will not separate from the tooth groove of the rack, thereby improving the user experience.

[0025] In one achievable manner, the watch strap further includes: a second limiting structure, the second limiting structure being used to limit the distance that the pressing member moves along a third direction, where the third direction intersects with the extension direction of the first strap body.

[0026] In one achievable method, the second limiting structure includes: a second limiting groove and a second limiting column arranged in the second limiting groove; the extension direction of the second limiting groove is perpendicular to the extension direction of the first strap body; one of the second limiting groove and the second limiting column is arranged on the pressing piece, and the other is arranged on the clasp.

[0027] The second limiting structure can be used to limit the moving distance of the pressing member, so as to prevent the pressing member from moving too far away from the rack when the user presses the pressing member, thereby affecting the user experience.

[0028] In one achievable method, the teeth on the rack include a first row of teeth and a second row of teeth, the first row of teeth and the second row of teeth are arranged on opposite sides of the rack, and the first row of teeth and the second row of teeth are parallel to the extension direction of the first strap; the pressing member includes a first pressing member and a second pressing member, and the first pressing member and the second pressing member are arranged on opposite sides of the clasp; any one 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 clasp, the second part extends into the clasp, and the snap-fit ​​structure is arranged at the end of the second part away from the first part; the snap-fit ​​structure of the first pressing member cooperates with the first row of teeth, and the snap-fit ​​structure of the second pressing member cooperates with the second row of teeth.

[0029] The symmetrical arrangement of the teeth and pressing parts not only facilitates operation but also improves the stability of the entire device strap extension and retraction.

[0030] In one achievable method, the first row of teeth grooves is closer to the first part of the second pressing member relative to the second row of teeth grooves; the second row of teeth grooves is closer to the first part of the first pressing member relative to the first row of teeth grooves; the second part of the first pressing member spans the second row of teeth grooves, so that the snap-fit ​​structure of the first pressing member cooperates with the first row of teeth grooves; the second part of the second pressing member spans the first row of teeth grooves, so that the snap-fit ​​structure of the second pressing member cooperates with the second row of teeth grooves.

[0031] In this way, the clamping structure of the first pressing piece can exert an extrusion force on the first row of teeth toward the outside of the clasp, and the clamping structure of the second pressing piece can exert an extrusion force on the second row of teeth toward the outside of the clasp, thereby improving the stability and reliability of the device when the pressing piece is not pressed.

[0032] In one possible implementation, a first sliding groove is provided on the clasp, and an extension direction of the first sliding groove is parallel to an extension direction of the first strap, and the first strap can slide along the first sliding groove.

[0033] By providing a sliding groove on the clasp, the strap and the rack can slide relative to the clasp, thereby achieving the extension and retraction of the strap length.

[0034] In one possible implementation, the watch strap also includes a first plate and a second plate, one end of the first plate is rotatably connected to the buckle, and the other end is rotatably connected to the second plate, the second plate is used to connect to the second strap body of the watch strap, and the second plate is connected to the buckle.

[0035] In the example, by rotatably connecting the first plate to the buckle, the strap body can be rotated relative to the buckle, making it convenient to use the device for wearing.

[0036] In one possible implementation, the watch strap also includes a first plate and a second plate, one end of the first plate is fixedly connected to the buckle, and the other end is rotatably connected to the second plate, the second plate is used to connect to the second strap body of the watch strap, and the second plate is connected to the buckle; at least one of the first plate and the second plate is a telescopic plate; the connection position of the second plate and the buckle includes a first gear and a second gear, and when the telescopic plate is extended and retracted, the connection position of the second plate and the buckle can be switched between the first gear and the second gear.

[0037] In the example given in the present application, the extension and contraction of the telescopic plate can be used to switch the connection position between the second plate and the buckle between at least two gears. For example, when the telescopic plate is extended, the connection position between the second plate and the buckle is in one gear. When it is in this gear, the radial size of the ring formed by the strap can be reduced to achieve a tight wear; conversely, when the telescopic plate is shortened, the connection position between the second plate and the buckle is in another gear. When it is in this gear, the radial size of the ring formed by the strap can be increased to achieve a loose wear.

[0038] In one possible implementation, the telescopic plate includes a first telescopic section and a second telescopic section; the strap also includes a third elastic member, one end of the third elastic member is connected to the first telescopic section, and the other end is connected to the second telescopic section, and the third elastic member is used to give the second telescopic section and the first telescopic section an elastic force to extend relative to each other; when the third elastic member is in the first state, the connection position between the second plate and the clasp is in the first position; when the third elastic member is in the second state, the connection position between the second plate and the clasp is in the second position.

[0039] In the example of the present application, the elastic force of the elastic member can be used to switch the connection position between the second plate and the buckle between the first gear and the second gear.

[0040] In one achievable method, the watch strap further includes: a second slide groove and a guide post, the second slide groove is opened on the second telescopic section, and the extension direction of the second slide groove is parallel to the telescopic direction of the second telescopic section; the guide post is fixedly connected to the first telescopic section, and the guide post is located in the second slide groove and can slide along the extension direction of the second slide groove; the third elastic member is arranged in the second slide groove, one end of the third elastic member abuts against the guide post, and the other end abuts against the second telescopic section.

[0041] The cooperation between the slide groove and the guide column can constrain the telescopic direction of the elastic member, thereby limiting the telescopic direction of the first telescopic section and the second telescopic section, and improving the reliability of the device.

[0042] In one possible implementation, the first plate includes a first telescopic section and a second telescopic section, the first telescopic section is fixedly connected to the clasp, and the second telescopic section is rotatably connected to the second plate.

[0043] In this embodiment, the first plate fixedly connected to the clasp is designed as a telescopic plate, which can make the gear switching more stable and reliable.

[0044] In one achievable method, the second slide groove has a first end and a second end, and the first end of the second slide groove is farther away from the connection position between the second telescopic section and the second plate than the second end; the first gear is farther away from the connection position between the second telescopic section and the second plate than the second gear; when the guide column is located at the first end of the second slide groove, the connection position between the second plate and the clasp is in the first gear; under the first force, when the guide column slides from the first end toward the second end, the connection position between the second plate and the clasp can be switched from the first gear to the second gear, and the first force faces the clasp.

[0045] When the length of the strap is extended, the buckle can be pushed to increase the radial size of the ring structure formed by the strap.

[0046] In one achievable method, the second slide groove has a first end and a second end, and the first end of the second slide groove is farther away from the connection position of the second telescopic section and the second plate than the second end; the first gear is farther away from the connection position of the second telescopic section and the second plate than the second gear; when the guide column is located at the second end of the second slide groove, the connection position of the second plate and the clasp is in the second gear; under the second force, when the guide column slides from the second end toward the first end, the connection position of the second plate and the clasp is in a position that can switch from the second gear to the first gear, and the first force is away from the clasp.

[0047] When shortening the length of the strap, you can pull the buckle to reduce the radial size of the ring structure formed by the strap.

[0048] In one achievable manner, a cavity is defined in the first telescopic section, and at least a portion of the second telescopic section extends into the cavity; and the third elastic member is disposed in the cavity.

[0049] The first telescopic section and the second telescopic section adopt a sleeve-type installation structure, and the elastic part is hidden inside the sleeve, thereby improving the appearance of the device.

[0050] In one achievable manner, the watch strap further includes: a third limiting structure, the third limiting structure being used to limit the amount of expansion and contraction of the second expansion section relative to the first expansion section.

[0051] In one practicable embodiment, the third limiting structure includes: a third limiting groove and a third limiting post disposed within the third limiting groove; the third limiting groove extends in a direction parallel to the extension direction of the second telescopic section; one of the third limiting groove and the third limiting post is disposed on the first telescopic section, and the other is disposed on the second telescopic section. This limiting structure is simple.

[0052] In one achievable method, the watch strap further includes: a buckle and a slot, one of the buckle and the slot is arranged on the buckle, and the other is arranged on the second plate; the slot includes a first slot and a second slot, the first slot and the second slot are arranged along the telescopic direction of the second telescopic section, and the first slot is farther away from the connection position between the second telescopic section and the second plate than the second slot; when the buckle is located in the first slot, the connection position between the second plate and the buckle is in the first position, and when the buckle is located in the second slot, the connection position between the second plate and the buckle is in the second position.

[0053] By cooperating with the buckle and the slot, switching between multiple gears can be achieved.

[0054] In one possible implementation, the first strap includes a first section and a second section; a third slide is provided on the clasp, the extension direction of the third slide is parallel to the extension direction of the first strap, and the first section can slide along the third slide; the first section is rotatably connected to the second section.

[0055] In this embodiment, since the first plate is fixedly connected to the buckle, the strap body also needs to be slidably connected to the buckle. In this way, the strap body can include a first section and a second section, the first section is slidably connected to the buckle, and the second section is rotationally connected to the first section.

[0056] In a second aspect, the present application provides a watchband connection structure, which is used to connect a first strap body.

[0057] The watch strap connection structure includes: a clasp, a rack and a pressing piece; the rack is arranged on the clasp, the rack can move along the extension direction of the first strap body, and the rack is used to be fixedly connected to the first strap body; the pressing piece is arranged on the clasp, and the pressing piece has a clamping structure that cooperates with the rack, and the pressing piece can move along the direction intersecting with the extension direction of the first strap body so that the clamping structure enters and exits the tooth groove of the rack.

[0058] The watch strap connection structure provided in the present application is installed on the watch strap. By pushing the strap body, the rack will drive the strap body to move in one direction, shortening the length of the watch strap. Alternatively, the pressing piece can be pressed to disengage the clamping structure on the pressing piece from the tooth groove, and the rack and the strap body will move in opposite directions, extending the length of the watch strap, thereby achieving fine-tuning of the watch strap length.

[0059] In one possible implementation, the strap connection structure also includes a first elastic member; when the rack moves along the first direction, the first elastic member is used to give the rack an elastic force along the second direction; the first direction is opposite to the second direction, and the first direction and the second direction are both parallel to the extension direction of the first strap body.

[0060] In one possible implementation, one end of the first elastic member is connected to the clasp, and the other end is connected to the rack; the first direction is from the first strap to the rack, and the second direction is from the rack to the first strap.

[0061] By using the first elastic member, the watch strap can be automatically rebounded. For example, after the watch strap is shortened, the watch strap can be automatically extended by pressing the pressing member; or, after the watch strap is extended, the watch strap can be automatically shortened by pressing the pressing member.

[0062] In one feasible manner, a mounting groove is provided on the rack, the mounting groove having a first end and a second end, the first end of the mounting groove is farther away from the first strap body than the second end, and the first elastic member is located in the mounting groove; an abutment member is provided on the clasp, and the abutment member is located at the first end of the mounting groove; one end of the first elastic member abuts against the abutment member, and the other end abuts against the rack.

[0063] In one achievable manner, the mounting groove includes a first section and a second section that are connected, the groove width of the first section is greater than the groove width of the second section, part of the first elastic member is located in the first section, and the other part is located in the second section.

[0064] The mounting groove for setting the elastic part is set to a first section with a wide groove and a second section with a narrow groove. The second section with a narrow groove can constrain the elastic part so that the elastic part deforms along its axial direction. The first section with a wide groove can be loosely matched with the elastic part, that is, the elastic part does not contact the wall of the groove, so that the elastic part can be freely extended and retracted.

[0065] In one achievable manner, the watchband connection structure further includes: a first limiting structure; the first limiting structure is used to limit the distance that the rack moves along the extending direction of the first strap body.

[0066] In one achievable method, the first limiting structure includes: a first limiting groove and a first limiting column arranged in the first limiting groove; the extension direction of the first limiting groove is parallel to the extension direction of the first belt body; one of the first limiting groove and the first limiting column is arranged on the rack, and the other is arranged on the clasp.

[0067] The first limiting structure can be used to limit the moving distance of the rack, thereby preventing the rack from moving a large amount when the user pushes the belt body, thereby affecting the user experience.

[0068] In one achievable manner, the 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 is connected to the buckle; the second elastic member is used to give the snap-fit ​​structure an elastic force toward the rack direction.

[0069] The elastic force of the clamping structure toward the rack is given by an elastic part, which can increase the adhesion between the clamping structure and the rack. Regardless of whether the strap is worn tightly or loosely, the clamping structure of the pressing part will not separate from the tooth groove of the rack, thereby improving the user experience.

[0070] In one achievable manner, the watchband connection structure further includes: a second limiting structure; the second limiting structure is used to limit the distance that the pressing member moves along a third direction, and the third direction intersects with the extension direction of the first strap body.

[0071] In one achievable method, the second limiting structure includes: a second limiting groove and a second limiting column arranged in the second limiting groove; the extension direction of the second limiting groove is perpendicular to the extension direction of the first strap body; one of the second limiting groove and the second limiting column is arranged on the pressing piece, and the other is arranged on the clasp.

[0072] The second limiting structure can be used to limit the moving distance of the pressing member, so as to prevent the pressing member from moving too far away from the rack when the user presses the pressing member, thereby affecting the user experience.

[0073] In one achievable method, the teeth on the rack include a first row of teeth and a second row of teeth, the first row of teeth and the second row of teeth are arranged on opposite sides of the rack, and the first row of teeth and the second row of teeth are parallel to the extension direction of the first strap; the pressing member includes a first pressing member and a second pressing member, and the first pressing member and the second pressing member are arranged on opposite sides of the clasp; any one 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 clasp, the second part extends into the clasp, and the snap-fit ​​structure is arranged at the end of the second part away from the first part; the snap-fit ​​structure of the first pressing member cooperates with the first row of teeth, and the snap-fit ​​structure of the second pressing member cooperates with the second row of teeth.

[0074] The symmetrical arrangement of the teeth and pressing parts not only facilitates operation but also improves the stability of the entire device strap extension and retraction.

[0075] In one achievable method, the first row of teeth grooves is closer to the first part of the second pressing member relative to the second row of teeth grooves; the second row of teeth grooves is closer to the first part of the first pressing member relative to the first row of teeth grooves; the second part of the first pressing member spans the second row of teeth grooves, so that the snap-fit ​​structure of the first pressing member cooperates with the first row of teeth grooves; the second part of the second pressing member spans the first row of teeth grooves, so that the snap-fit ​​structure of the second pressing member cooperates with the second row of teeth grooves.

[0076] In this way, the clamping structure of the first pressing piece can exert an extrusion force on the first row of teeth toward the outside of the clasp, and the clamping structure of the second pressing piece can exert an extrusion force on the second row of teeth toward the outside of the clasp, thereby improving the stability and reliability of the device when the pressing piece is not pressed.

[0077] In one possible implementation, a first sliding groove is provided on the clasp, and an extension direction of the first sliding groove is parallel to an extension direction of the first strap, and the first strap can slide along the first sliding groove.

[0078] By providing a sliding groove on the clasp, the strap and the rack can slide relative to the clasp, thereby achieving the extension and retraction of the strap length.

[0079] In one possible implementation, the strap connection structure also includes a first plate and a second plate, one end of the first plate is rotatably connected to the buckle, and the other end is rotatably connected to the second plate, the second plate is used to connect to the second strap body of the strap, and the second plate is connected to the buckle.

[0080] In the example, by rotatably connecting the first plate to the buckle, the strap body can be rotated relative to the buckle, making it convenient to use the device for wearing.

[0081] In a third aspect, the present application provides a watch strap, which may include: a first strap body and a strap connection structure connected to the first strap body; the strap connection structure includes a buckle, a first plate and a second plate; the buckle is arranged on the first strap body, one end of the first plate is fixedly connected to the buckle, and the other end is rotatably connected to the second plate, the second plate is used to connect to the second strap body of the strap, and the second plate is connected to the buckle; at least one of the first plate and the second plate is a telescopic plate; the connection position of the second plate and the buckle includes a first gear and a second gear, and when the telescopic plate is extended and retracted, the connection position of the second plate and the buckle can be switched between the first gear and the second gear.

[0082] In the watch strap provided by the present application, since at least one of the first plate and the second plate is retractable, when the first plate and / or the second plate is retracted or extended, the connection position between the second plate and the buckle can be switched between different gears. In this way, by utilizing the retractable plate and the gear switching structure, the radial dimension of the closed loop formed by the first strap body and the second strap body can be extended or shortened, thereby achieving fine-tuning of the strap length.

[0083] In one possible implementation, the telescopic plate includes: a first telescopic section and a second telescopic section; the strap also includes an elastic member, one end of the elastic member is connected to the first telescopic section, and the other end is connected to the second telescopic section, and the elastic member is used to give the second telescopic section and the first telescopic section an elastic force to extend relative to each other; when the elastic member is in the first state, the connection position between the second plate and the clasp is in the first position; when the elastic member is in the second state, the connection position between the second plate and the clasp is in the second position.

[0084] In the example of the present application, the elastic force of the elastic member is used to achieve the expansion and contraction between the first expansion section and the second expansion section, so that the connection position between the second plate and the clasp is switched between the first gear and the second gear.

[0085] In one achievable method, the watch strap further includes: a slide groove and a guide post, the slide groove is provided on the second telescopic section, and the extension direction of the second slide groove is parallel to the telescopic direction of the second telescopic section; the guide post is fixedly connected to the first telescopic section, and the guide post is located in the slide groove and can slide along the extension direction of the slide groove; the elastic member is arranged in the slide groove, one end of the elastic member abuts against the guide post, and the other end abuts against the second telescopic section.

[0086] The cooperation between the slide groove and the guide column can constrain the telescopic direction of the elastic member, thereby limiting the telescopic direction of the first telescopic section and the second telescopic section, and improving the reliability of the device.

[0087] In one possible implementation, the first plate includes a first telescopic section and a second telescopic section, the first telescopic section is fixedly connected to the clasp, and the second telescopic section is rotatably connected to the second plate.

[0088] In this embodiment, the first plate fixedly connected to the clasp is designed as a telescopic plate, which can make the gear switching more stable and reliable.

[0089] In one achievable method, the slide has a first end and a second end, the first end of the slide is farther away from the connection position of the second telescopic section and the second plate than the second end; the first gear is farther away from the connection position of the second telescopic section and the second plate than the second gear; when the guide column is located at the first end of the slide, the connection position of the second plate and the clasp is in the first gear; under the first force, when the guide column slides from the first end toward the second end, the connection position of the second plate and the clasp can be switched from the first gear to the second gear, and the first force faces the clasp.

[0090] In one achievable method, the slide has a first end and a second end, the first end of the slide is farther away from the connection position between the second telescopic section and the second plate than the second end; the first gear is farther away from the connection position between the second telescopic section and the second plate than the second gear; when the guide column is located at the second end of the slide, the connection position between the second plate and the clasp is in the second gear; under the second force, when the guide column slides from the second end toward the first end, the connection position between the second plate and the clasp is in a position that can switch from the second gear to the first gear, and the first force is away from the clasp.

[0091] In one achievable manner, a cavity is defined in the first telescopic section, and at least a portion of the second telescopic section extends into the cavity; and the elastic member is disposed in the cavity.

[0092] The first telescopic section and the second telescopic section adopt a sleeve-type installation structure, and the elastic part is hidden inside the sleeve, thereby improving the appearance of the device.

[0093] In one achievable manner, the watch strap further includes: a third limiting structure, the third limiting structure being used to limit the amount of expansion and contraction of the second expansion section relative to the first expansion section.

[0094] In one practicable embodiment, the third limiting structure includes: a third limiting groove and a third limiting post disposed within the third limiting groove; the third limiting groove extends in a direction parallel to the extension direction of the second telescopic section; one of the third limiting groove and the third limiting post is disposed on the first telescopic section, and the other is disposed on the second telescopic section. This limiting structure is simple.

[0095] In one achievable method, the watch strap further includes: a buckle and a slot, one of the buckle and the slot is arranged on the buckle, and the other is arranged on the second plate; the slot includes a first slot and a second slot, the first slot and the second slot are arranged along the telescopic direction of the second telescopic section, and the first slot is farther away from the connection position between the second telescopic section and the second plate than the second slot; when the buckle is located in the first slot, the connection position between the second plate and the buckle is in the first position, and when the buckle is located in the second slot, the connection position between the second plate and the buckle is in the second position.

[0096] By cooperating with the buckle and the slot, switching between multiple gears can be achieved.

[0097] In one possible implementation, the first strap is rotatably connected to the clasp.

[0098] In a fourth aspect, the present application provides a watch strap connection structure, which is used to connect the first strap body and the second strap body of the watch strap, and the watch strap connection structure includes: a buckle, a first plate and a second plate; one end of the first plate is fixedly connected to the buckle, and the other end is rotatably connected to the second plate, the second plate is connected to the buckle, the buckle is used to connect to the first strap body, and the second plate is used to connect to the second strap body; at least one of the first plate and the second plate is a telescopic plate; the connection position of the second plate and the buckle includes a first gear and a second gear, and when the telescopic plate is extended and retracted, the connection position of the second plate and the buckle can be switched between the first gear and the second gear.

[0099] In the watch strap connection structure provided by the present application, since at least one of the first plate and the second plate is retractable, when the first plate and / or the second plate is retracted or extended, the connection position of the second plate and the buckle can be switched between different gears. In this way, by utilizing the retractable plate and the gear switching structure, the radial dimension of the closed loop formed by the first strap body and the second strap body can be extended or shortened, thereby achieving fine-tuning of the watch strap length.

[0100] In one possible implementation, the telescopic plate includes: a first telescopic section and a second telescopic section; the strap also includes an elastic member, one end of the elastic member is connected to the first telescopic section, and the other end is connected to the second telescopic section, and the elastic member is used to give the second telescopic section and the first telescopic section an elastic force to extend relative to each other; when the elastic member is in the first state, the connection position between the second plate and the clasp is in the first position; when the elastic member is in the second state, the connection position between the second plate and the clasp is in the second position.

[0101] In the example of the present application, the elastic force of the elastic member is used to achieve the expansion and contraction between the first expansion section and the second expansion section, so that the connection position between the second plate and the clasp is switched between the first gear and the second gear.

[0102] In one achievable method, the watch strap further includes: a slide groove and a guide post, the slide groove is provided on the second telescopic section, and the extension direction of the second slide groove is parallel to the telescopic direction of the second telescopic section; the guide post is fixedly connected to the first telescopic section, and the guide post is located in the slide groove and can slide along the extension direction of the slide groove; the elastic member is arranged in the slide groove, one end of the elastic member abuts against the guide post, and the other end abuts against the second telescopic section.

[0103] The cooperation between the slide groove and the guide column can constrain the telescopic direction of the elastic member, thereby limiting the telescopic direction of the first telescopic section and the second telescopic section, and improving the reliability of the device.

[0104] In one possible implementation, the first plate includes a first telescopic section and a second telescopic section, the first telescopic section is fixedly connected to the clasp, and the second telescopic section is rotatably connected to the second plate.

[0105] In this embodiment, the first plate fixedly connected to the clasp is designed as a telescopic plate, which can make the gear switching more stable and reliable.

[0106] In one achievable method, the slide has a first end and a second end, the first end of the slide is farther away from the connection position of the second telescopic section and the second plate than the second end; the first gear is farther away from the connection position of the second telescopic section and the second plate than the second gear; when the guide column is located at the first end of the slide, the connection position of the second plate and the clasp is in the first gear; under the first force, when the guide column slides from the first end toward the second end, the connection position of the second plate and the clasp can be switched from the first gear to the second gear, and the first force faces the clasp.

[0107] In one achievable method, the slide has a first end and a second end, the first end of the slide is farther away from the connection position between the second telescopic section and the second plate than the second end; the first gear is farther away from the connection position between the second telescopic section and the second plate than the second gear; when the guide column is located at the second end of the slide, the connection position between the second plate and the clasp is in the second gear; under the second force, when the guide column slides from the second end toward the first end, the connection position between the second plate and the clasp is in a position that can switch from the second gear to the first gear, and the first force is away from the clasp.

[0108] In one achievable manner, a cavity is defined in the first telescopic section, and at least a portion of the second telescopic section extends into the cavity; and the elastic member is disposed in the cavity.

[0109] The first telescopic section and the second telescopic section adopt a sleeve-type installation structure, and the elastic part is hidden inside the sleeve, thereby improving the appearance of the device.

[0110] In one achievable manner, the watch strap further includes: a third limiting structure, the third limiting structure being used to limit the amount of expansion and contraction of the second expansion section relative to the first expansion section.

[0111] In one practicable embodiment, the third limiting structure includes: a third limiting groove and a third limiting post disposed within the third limiting groove; the third limiting groove extends in a direction parallel to the extension direction of the second telescopic section; one of the third limiting groove and the third limiting post is disposed on the first telescopic section, and the other is disposed on the second telescopic section. This limiting structure is simple.

[0112] In one achievable method, the watch strap further includes: a buckle and a slot, one of the buckle and the slot is arranged on the buckle, and the other is arranged on the second plate; the slot includes a first slot and a second slot, the first slot and the second slot are arranged along the telescopic direction of the second telescopic section, and the first slot is farther away from the connection position between the second telescopic section and the second plate than the second slot; when the buckle is located in the first slot, the connection position between the second plate and the buckle is in the first position, and when the buckle is located in the second slot, the connection position between the second plate and the buckle is in the second position.

[0113] By cooperating with the buckle and the slot, switching between multiple gears can be achieved.

[0114] In a fifth aspect, the present application provides a wearable device, which may be a watch or a bracelet.

[0115] The wearable device may include: a watch face and a watch strap in any of the above implementations, wherein the watch strap is connected to the watch face.

[0116] Since the wearable device provided in the present application includes a watch strap in any of the above-mentioned methods, the connection structure of the watch strap has a structure that can fine-tune the length of the watch strap. In this way, when the wearable device is worn, the length of the watch strap can be fine-adjusted according to the thickness of the wrist to accurately adapt to the wrist and improve the user experience. Or, when the device has a physiological monitoring function, it can also improve the monitoring accuracy and enhance the working performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0117] FIG1 is a schematic diagram of a partial structure of a wearable device provided in an embodiment of the present application;

[0118] FIG2 is a schematic diagram of a partial structure of a wearable device provided in an embodiment of the present application;

[0119] FIG3 is a partial structural exploded view of FIG2 ;

[0120] FIG4 is a view taken along the line A of FIG3 ;

[0121] FIG5 is a schematic diagram of a partial structure of a wearable device provided in an embodiment of the present application;

[0122] FIG6 is a schematic diagram of a partial structure of a wearable device provided in an embodiment of the present application;

[0123] FIG7 is a schematic diagram of the telescopic structure of a wearable device provided in an embodiment of the present application;

[0124] FIG8 is a schematic diagram of the telescopic structure of a wearable device provided in an embodiment of the present application;

[0125] FIG9 is a schematic diagram of the telescopic structure of a wearable device provided in an embodiment of the present application;

[0126] FIG10 is an exploded schematic diagram of a partial structure of a wearable device provided in an embodiment of the present application;

[0127] FIG11 is a schematic structural diagram of a pressing member provided in an embodiment of the present application;

[0128] FIG12 is an exploded schematic diagram showing a pressing member according to an embodiment of the present application;

[0129] FIG13 is a schematic structural diagram of a pressing member provided in an embodiment of the present application;

[0130] FIG14 is a structural diagram illustrating a connection relationship between a clamping structure of a pressing member and a rack provided in an embodiment of the present application;

[0131] FIG15 is a schematic structural diagram of a mounting groove for displaying an elastic member provided in an embodiment of the present application;

[0132] FIG16 is a schematic structural diagram for illustrating a position limiting structure provided in an embodiment of the present application;

[0133] FIG17 is a schematic structural diagram of a position limiting structure provided in an embodiment of the present application;

[0134] FIG18 is a schematic diagram of a partial structure of a wearable device provided in an embodiment of the present application;

[0135] FIG19 is a schematic diagram of a partial structure of a wearable device provided in an embodiment of the present application;

[0136] FIG20 is a schematic diagram of a partial structure of a wearable device provided in an embodiment of the present application;

[0137] FIG21 is a schematic structural diagram for illustrating a position limiting structure provided in an embodiment of the present application;

[0138] FIG22 is an exploded schematic diagram of a partial structure of a wearable device provided in an embodiment of the present application;

[0139] FIG23 is an exploded schematic diagram of a partial structure of a wearable device provided in an embodiment of the present application;

[0140] FIG24 is a schematic structural diagram of a partial structure of a wearable device provided in an embodiment of the present application;

[0141] FIG25 is an exploded schematic diagram of a retractable plate of a wearable device provided in an embodiment of the present application;

[0142] FIG26 is a schematic diagram of the telescopic structure of a telescopic plate provided in an embodiment of the present application;

[0143] FIG27 is a schematic diagram of the telescopic structure of a telescopic plate provided in an embodiment of the present application;

[0144] FIG28 is a schematic structural diagram of the telescopic principle and gear switching of a telescopic plate provided in an embodiment of the present application;

[0145] FIG29 is a schematic diagram of the telescopic principle and gear switching structure of a telescopic plate provided in an embodiment of the present application;

[0146] FIG30 is a schematic structural diagram of the telescopic principle and gear switching of a telescopic plate provided in an embodiment of the present application;

[0147] FIG31 is a schematic diagram of the telescopic principle and gear switching structure of a telescopic plate provided in an embodiment of the present application;

[0148] FIG32 is a schematic diagram of the exploded structure of a telescopic plate provided in an embodiment of the present application;

[0149] FIG33 is a schematic diagram of the exploded structure of a telescopic plate provided in an embodiment of the present application;

[0150] FIG34 is a schematic diagram of the exploded structure of a telescopic plate provided in an embodiment of the present application;

[0151] Figure 35 is a structural diagram of part of the structure of a wearable device provided in an embodiment of the present application.

[0152] Reference numerals:

[0153] 10-first belt body; 20-second belt body; 30-connecting structure; 101-hole; 10A-first belt body segment; 10B-second belt body segment; 10C-rotating shaft;

[0154] 301-clasp; 3011-first housing; 3012-second housing; 3013-slide; 3014-perforation; 3015-limiting cavity; 3016-hole; 3017-counterbore; 3018-axis hole; 3019-clip; 3020-structural part;

[0155] 302- rack; 3021- first row of tooth grooves; 3022- second row of tooth grooves;

[0156] 303-pressing member; 3031-first pressing member; 3032-second pressing member; 303A-first part; 303B-second part;

[0157] 304-clamping structure; 3041-first fitting surface; 3042-second fitting surface;

[0158] 305-tooth groove; 3051-first wall; 3052-second wall;

[0159] 306, 3061, 3062, 311 - elastic parts;

[0160] 307, 3071, 3072 - mounting slots; 307A - first section; 307B - second section;

[0161] 308, 3081, 3082-abutment members;

[0162] 309, 310-limiting structure; 3091, 3101-limiting groove; 3092, 3102-limiting column;

[0163] 40-first board;

[0164] 50-second board; 501-first card slot; 502-second card slot

[0165] 601, 602-rotating shaft;

[0166] 70- buckle; 701- slot; 702- buckle;

[0167] 80-fasteners;

[0168] 901-first telescopic section; 902-second telescopic section; 903-elastic member; 904-slide; 905-guide column; 906-limiting groove; 907-limiting column

[0169] 901A-cover plate; 901B-base plate. DETAILED DESCRIPTION

[0170] The present invention provides a wearable device, such as a smart bracelet or smart watch, which can be worn on the wrist and can display time, record time, report time, provide message notifications, detect exercise, monitor heart rate, and detect blood oxygen levels.

[0171] Wearable devices mainly include a strap and a dial. The strap is used to wrap around the user's wrist to enable the wearable device to be worn.

[0172] As shown in Figure 1, a structure diagram of a watchband is shown. The exemplary watchband includes a first band 10 and a second band 20, with a dial connected between the first band 10 and the second band 20. For example, the dial can be connected between end A of the first band 10 and end B of the second band 20. The first band 10 and the second band 20 can be connected by a connecting structure 30, so that the first band 10, the dial, and the second band 20 form a closed loop that can be wrapped around the wrist.

[0173] In order to fit the wrist, as shown in FIG1 , a plurality of holes 101 may be opened on the first strap body 10 and the second strap body 20 , and the wearer may adjust the strap length according to the thickness of the wrist through the plurality of holes.

[0174] In Figure 1, the strap length adjustment amount is at least the distance between two adjacent holes 101. This may cause the strap to be worn too loose or too tight, and it may not be able to accurately adapt to the wrist, thereby reducing the user experience and even reducing the performance of the wearable device. For example, when the wearable device has functions such as heart rate monitoring and blood oxygen level detection, the dial cannot be close to the skin due to being worn too loose, thereby reducing the measurement accuracy.

[0175] In order to make the wearable device accurately fit the wrist, improve the user experience, and enhance the performance of the device, the wearable device of the example of this application includes a fine-tuning structure that can fine-tune the length of the strap. For example, as shown in Figure 1, the adjustment amount of the fine-tuning structure can be one-half, one-third, one-quarter, or one-fifth of the distance between two adjacent holes, or even smaller; alternatively, the adjustment amount of the fine-tuning structure can be greater than one hole distance and less than two hole distances. For example, the adjustment amount can be equal to 3 / 2 hole distances. The structure that can be achieved by the fine-tuning structure is shown below.

[0176] As shown in Figures 2, 3 and 4, Figure 2 is a partial structural diagram of the wearable device given in an embodiment of the present application, Figure 3 is an exploded view of Figure 2, and Figure 4 is an A-direction view of Figure 3, in which the pressing part is decomposed.

[0177] In the example of the present application, the connection structure provided between the first strap 10 and the second strap 20 includes a clasp 301 . In FIG. 2 and FIG. 3 , the clasp 301 is exemplarily provided at the end of the first strap 10 .

[0178] As shown in FIG4 , the connection structure further includes a rack 302 and a pressing member 303 . The clasp 301 serves as a carrier for the rack 302 and the pressing member 303 , that is, the rack 302 and the pressing member 303 are arranged on the clasp 301 .

[0179] The rack 302 is fixedly connected to the first strap 10. The rack 302 is movably disposed on the clasp 301 and is capable of moving along the extension direction of the first strap 10. As shown in FIG4 , since the rack 302 is fixedly connected to the first strap 10, the rack 302 and the first strap 10 can move along the extension direction L of the first strap 10.

[0180] 4 , the pressing member 303 has a snap-fit ​​structure 304 that cooperates with the rack 302 . The pressing member 303 can move along a direction intersecting the extension direction L of the first belt body 10 so that the snap-fit ​​structure 304 enters and exits the tooth groove 305 of the rack 302 .

[0181] For example, the pressing member 303 may move along a direction perpendicular or nearly perpendicular to the extending direction L of the first belt body 10 (eg, the M direction in FIG. 4 ).

[0182] In some examples, as shown in FIG. 5 , which is a partial structural diagram of FIG. 4 , the width d of two adjacent tooth grooves 305 may be one-fifth, one-sixth, or even smaller than the hole pitch s.

[0183] When the watchband needs to be shortened to achieve a tighter fit, as shown in Figure 5, the first strap 10 can be pushed toward the clasp 301 (such as direction P11 in Figure 5). The first strap 10 will drive the rack 302 to move along direction P11, and the snap-fit ​​structure 304 can switch from one tooth groove of the rack 302 to another tooth groove, thereby shortening the watchband. For example, the shortened length of the watchband can be the width d of one tooth groove, the width 2d of two tooth grooves, or the width of more tooth grooves.

[0184] When the strap needs to be extended for a looser fit, as shown in Figure 5 , the pressing member 303 can be pressed in the direction M1. Under this pressure, the engaging structure 304 on the pressing member 303 disengages the tooth groove 305 of the rack 302, and the connected rack 302 and first strap 10 move away from the clasp 301 (direction P12 in Figure 5 ), thereby extending the strap. This allows for fine-tuning of the strap length.

[0185] In some usage scenarios, users can use the hole spacing adjustment and fine-tuning shown in Figures 4 and 5 at the same time to accurately adjust the strap length to fit the wrist and improve the experience.

[0186] In addition, the wearable device of the example of the present application can use a fine-tuning structure to fine-tune the length of the strap when worn, which can make the adjustment more accurate, better fit to the wrist, and achieve a quick adjustment effect.

[0187] In the examples of FIG. 4 and FIG. 5 , the rack 302 and the pressing member 303 are provided at the ends of the belt body.

[0188] In other examples, the rack 302 and the pressing member 303 may also be disposed in the area between the two ends of the strap, and the rack may be used to drive the strap to move, thereby achieving extension and retraction of the strap.

[0189] When the pressing member 303 is pressed and the clamping structure 304 on the pressing member 303 disengages from the tooth groove of the rack 302, in order to make the rack 302 and the first belt body 10 automatically rebound, as shown in Figure 5, an elastic member 306 may also be included. When the rack 302 drives the first belt body 10 to move along the first direction, the elastic member 306 is used to give the first belt body 10 a thrust along the second direction; wherein the first direction is opposite to the second direction, and the first direction and the second direction are both parallel to the extension direction of the first belt body 10.

[0190] In some examples, such as FIG5 , when the rack 302 drives the first belt 10 to move in the direction P11 in FIG5 , the elastic member 306 is used to apply a thrust f to the first belt 10 in the direction P12 in FIG5 . In this example, the first direction is the direction from the first belt 10 to the rack 302 (such as the direction P11 in FIG5 ), and the second direction is the direction from the rack 302 to the first belt 10 (such as the direction P12 in FIG5 ). That is, in this embodiment, the elastic member 306 pushes the first belt 10 outward toward the first belt 10.

[0191] In other examples, such as FIG6 , when the rack 302 drives the first belt 10 to move in the direction P21 in FIG6 , the elastic member 306 is used to apply a pulling force f to the first belt 10 in the direction P22 in FIG6 . In this example, the first direction is the direction from the rack 302 to the first belt 10 (such as the direction P21 in FIG6 ), and the second direction is the direction from the first belt 10 to the rack 302 (such as the direction P22 in FIG6 ). That is, in this embodiment, the elastic member 306 pulls the first belt 10 inward toward the rack 302.

[0192] In the example shown in FIG5 , one end of the elastic member 306 can be connected to the clasp 301, and the other end can be connected to the rack 302. When the rack 302 drives the first strap 10 to move in the direction P11 shown in FIG5 , the elastic member 306 is used to push the rack 302 in the direction P12 shown in FIG5 .

[0193] FIG. 7 and FIG. 8 respectively exemplarily show two configurations of the elastic member 306 in the embodiment of FIG. 5 .

[0194] As shown in Figure 7, a mounting slot 307 can be defined on the rack 302, and an abutment member 308 can be provided on the clasp 301. The abutment member 308 is located within the mounting slot 307. The mounting slot 307 extends parallel to the extension direction L of the first strap 10. The mounting slot 307 has a first end away from the first strap 10 and a second end closer to the first strap 10. The abutment member 308 is located at the first end. One end of the elastic member 306 abuts against the abutment member 308, while the other end abuts against the rack 302.

[0195] The principle of fine-tuning the length of the watch strap is described with reference to (a) to (d) in FIG7 . 7 (a), the snap-fitting structure 304 of the pressing member 303 cooperates with the tooth groove A of the rack 302, giving the first strap 10 a thrust toward the direction of the buckle 301; as shown in FIG7 (b), the first strap 10 and the rack 302 move to the left by a distance s, and the snap-fitting structure 304 of the pressing member 303 cooperates with the tooth groove B of the rack 302. At the same time, since the elastic member 306 is compressed, a thrust f toward the first strap 10 is generated, thereby shortening the strap length; as shown in FIG7 (c), a thrust is applied to the pressing member 303, so that the snap-fitting structure 304 disengages from the tooth groove B of the rack 302. The rack 302 and the first strap 10 move to the right by a distance s under the action of the thrust f of the elastic member 306, and the snap-fitting structure 304 of the pressing member 303 cooperates with the tooth groove A of the rack 302, thereby extending the strap length.

[0196] As shown in FIG8 , the example in FIG8 is similar to the example in FIG7 in that a mounting groove 307 can be opened on the rack 302 , and an abutment member 308 is provided on the clasp 301 , and the abutment member 308 is located in the mounting groove 307 .

[0197] The difference between the example in FIG. 8 and the example in FIG. 7 is that the abutment member 308 is located at the second end of the mounting groove 307 , one end of the elastic member 306 is connected to the abutment member 308 , and the other end is connected to the rack 302 .

[0198] The principle of fine-tuning the length of the watch strap is described with reference to (a) to (d) in FIG8 . 8 (a), the snap-fitting structure 304 of the pressing member 303 cooperates with the tooth groove A of the rack 302, giving the first strap 10 a thrust toward the direction of the buckle 301; as shown in FIG8 (b), the first strap 10 and the rack 302 move to the left by a distance s, and the snap-fitting structure 304 of the pressing member 303 cooperates with the tooth groove B of the rack 302. At the same time, since the elastic member 306 is stretched, a thrust f toward the first strap 10 is generated, thereby shortening the strap length; as shown in FIG8 (c), a thrust is applied to the pressing member 303, so that the snap-fitting structure 304 disengages from the tooth groove B of the rack 302. The rack 302 and the first strap 10 move to the right by a distance s under the action of the thrust f of the elastic member 306, and the snap-fitting structure 304 of the pressing member 303 cooperates with the tooth groove A of the rack 302 again, thereby extending the strap length.

[0199] In the examples of FIG. 7 and FIG. 8 , by providing the elastic member 306 , when the length of the strap needs to be extended, the rack 302 and the first strap 10 can automatically rebound, thereby improving the user experience and eliminating the need for the user to pull the strap to extend the strap length.

[0200] In the examples of FIG. 7 and FIG. 8 , due to the different positions of the abutment 308, the states of the elastic member 306 are different after the watchband is shortened. In FIG. 7 , the elastic member 306 is in a compressed state. Consequently, in one example, one end of the elastic member 306 can directly abut the abutment 308, and the other end can directly abut the rack 302. In FIG. 8 , after the watchband is shortened, the elastic member 306 is in a stretched state. In some examples, a connecting structure can be used to secure one end of the elastic member 306 to the abutment 308 and the other end to the rack 302, for example, by welding.

[0201] In some examples, the abutting member 308 for abutting against the elastic member 306 can be an integral structure with the clasp 301, or can be connected to the clasp 301 through a connecting structure (such as welding).

[0202] Figure 9 illustrates the principle of fine-tuning the watchband length in the structure shown in Figure 6. A pulling force is applied to the first strap 10 away from the buckle 301, causing the first strap 10 and rack 302 to move rightward, extending the strap. Simultaneously, the elastic member 306 is stretched, generating a pulling force f away from the first strap 10. When a pushing force is applied to the pressing member 303, causing the engaging structure 304 to disengage from the tooth groove B of the rack 302, the rack 302 and first strap 10 move leftward under the pulling force f of the elastic member 306, shortening the strap length.

[0203] Returning to FIG. 7 , two elastic members 306 for achieving automatic rebound can be provided, namely, elastic member 3061 and elastic member 3062. Mounting slot 307 includes mounting slot 3071 and mounting slot 3072. Abutment member 308 includes abutment member 3081 and abutment member 3082. Mounting slot 3071 and mounting slot 3072 are arranged in parallel, with elastic member 3061 abutting against abutment member 3081, and elastic member 3062 abutting against abutment member 3082.

[0204] The following describes some structures that can be realized by the buckle 301, the rack 302, the pressing member 303, and the elastic member 306 with reference to the structural diagram.

[0205] In some examples, such as Figure 10, which exemplarily shows an exploded view of the clasp 301 and the first strap 10, the clasp 301 may include a first shell 3011 and a second shell 3012, which are engaged with each other to form an installation space, and the rack 302 is located in the installation space.

[0206] The first shell 3011 and the second shell 3012 are buckled together, and a through hole 3014 is formed on the side facing the first belt body 10 . The rack 302 can pass through the through hole 3014 and be fixedly connected to the first belt body 10 .

[0207] Since the rack 302 and the first strap 10 fixedly connected together can move relative to the buckle 301, as shown in Figure 10, a slide groove 3013 can be opened on the first shell 3011, and the first strap 10 can slide along the slide groove 3013, and the extension direction of the slide groove 3013 is parallel to the extension direction of the first strap 10.

[0208] In some process structures, the first shell 3011 and the second shell 3012 can be independent structural members connected by a connector. In other process structures, the first shell 3011 and the second shell 3012 are an integrated structural member.

[0209] To ensure structural symmetry, ease of operation, and stability of belt extension, as shown in Figures 11 and 12 (Figure 11 illustrates the connection between the rack and the pressing member, while Figure 12 is an exploded view of Figure 11), the teeth on the rack 302 can be arranged in two rows: a first row of teeth 3021 and a second row of teeth 3022. The first row of teeth 3021 and the second row of teeth 3022 are arranged back-to-back, with the slot openings of the first row of teeth 3021 facing away from the slot openings of the second row of teeth 3022. Both the first row of teeth 3021 and the second row of teeth 3022 are parallel to the extension direction of the first belt body 10.

[0210] The pressing member includes a first pressing member 3031 and a second pressing member 3032, which are arranged on opposite sides of the rack 302. The first pressing member 3031 cooperates with the first row of tooth grooves 3021, and the second pressing member 3032 cooperates with the second row of tooth grooves 3022. During use, the first pressing member 3031 and the second pressing member 3032 can be pressed simultaneously with the thumb and index finger to improve operational convenience and the stability of the strap extension.

[0211] Continuing with Figure 11 , the first pressing member 3031 and the second pressing member 3032 may each include a first portion 303A and a second portion 303B connected to the first portion 303A. The first portion 303A is located outside the clasp 301 and is intended to be pressed by the user. The first portion 303A is loosely coupled to the clasp 301 to enable movement of the pressing member relative to the clasp. The second portion 303B extends into the interior of the clasp 301, and the engaging structure 304 may be disposed at the end of the second portion 303B facing away from the first portion 303A.

[0212] In this example, the first part 303A and the second part 303B may be an integral structural member, or independent structural members connected by a connector.

[0213] As shown in Figure 11 , the first row of tooth grooves 3021 is closer to the first portion 303A of the second pressing member than the second row of tooth grooves 3022; the second row of tooth grooves 3022 is closer to the first portion 303A of the first pressing member 3031 than the first row of tooth grooves 3021; ​​the engaging structure 304 of the first pressing member 3031 cooperates with the first row of tooth grooves 3021, and the engaging structure 304 of the second pressing member 3032 cooperates with the second row of tooth grooves 3022. The "cooperation" here can be understood as: the engaging structure 304 of the first pressing member 3031 can move in and out of the first row of tooth grooves 3021, and the engaging structure 304 of the second pressing member 3032 can move in and out of the second row of tooth grooves 3022.

[0214] Alternatively, it can be understood that: the second part 303B of the first pressing piece 3031 crosses the rack 302, so that the clamping structure 304 of the first pressing piece 3031 is used in conjunction with the first row of tooth grooves 3021 set far away; the second part 303B of the second pressing piece 3032 crosses the rack 302, so that the clamping structure 304 of the second pressing piece 3032 is used in conjunction with the second row of tooth grooves 3022 set far away.

[0215] Figure 13 shows another structural diagram of the positional relationship between the pressing member and the rack. In this example, the first row of tooth grooves 3021 and the second row of tooth grooves 3022 are arranged opposite each other, that is, the slot openings of the first row of tooth grooves 3021 face the slot openings of the second row of tooth grooves 3022. The first row of tooth grooves 3021 are arranged near the first pressing member 3031, and the second row of tooth grooves 3022 are arranged near the second pressing member 3032. The clamping structure 304 of the first pressing member 3031 cooperates with the first row of tooth grooves 3021, and the clamping structure 304 of the second pressing member 3032 cooperates with the second row of tooth grooves 3022.

[0216] In some examples, such as Figure 14, which illustrates the connection between the snap-fit ​​structure 304 and the tooth groove 305, a tooth groove is formed by a first wall 3051 and a second wall 3052. The first wall 3051 is perpendicular to the extension direction of the first belt body 10, that is, the first wall is parallel to the movement direction of the pressing member, and the second wall 3052 is an inclined surface that forms an acute angle α with respect to the extension direction of the first belt body.

[0217] 14 , the clamping structure 304 includes a first affixed surface 3041 affixed to the first wall 3051 and a second affixed surface 3042 affixed to the second wall 3052. The first affixed surface 3041 can be parallel to the first wall 3051, and the second affixed surface 3042 can be parallel to the second wall 3052.

[0218] This structure of the tooth groove and the latching structure allows the rack and the first strap to move in one direction, but requires unlocking the pressing member to move in the opposite direction. For example, as shown in Figure 14, when the first strap 10 is pushed and the first strap 10 and the rack 302 are moved toward the clasp 301 (direction P1 in Figure 14), the pressing member needs to be unlocked to allow the first strap 10 and the rack 302 to move. However, when the first strap 10 and the rack 302 are moved away from the clasp 301 (direction P2 in Figure 14), the pressing member needs to be unlocked to allow movement.

[0219] 15 exemplarily shows a possible structure of a mounting groove 307 for mounting the elastic member 306. In this structure, the mounting groove 307 includes a first section 307A and a second section 307B, the first section 307A and the second section 307B being connected, and a portion of the elastic member 306 is located in the first section 307A and the other portion is located in the second section 307B.

[0220] The groove width d of the first section 307A is greater than the groove width d of the second section 307B. The elastic member 306 located in the second section 307B can fit against the inner wall of the second section 307B. In this way, this structure can play a limiting role. For example, when the rack drives the first belt body to move, the deformed elastic member 306 can expand and contract along the axial direction of the elastic member under the constraint of the second section 307B. The elastic member 306 located in the first section 307A can fit with the inner wall of the first section 307A with a gap, thus providing the elastic member 306 with sufficient space for expansion and contraction.

[0221] 15 , the first segment 307A with a larger groove width is further away from the first belt body 10 than the second segment 307B with a smaller groove width. In other examples, the first segment 307A with a larger groove width may be closer to the first belt body 10 than the second segment 307B with a smaller groove width.

[0222] When the connected rack 302 and the first strap 10 move to adjust the length of the strap, in order to limit the movement distance, the example of the present application also includes a limiting structure, as shown in Figure 16. Figure 16 shows one of the possible structures of the limiting structure 309, which is used to limit the distance that the rack 302 moves along the extension direction of the first strap 10 (such as the L direction in Figure 16).

[0223] The limiting structure 309 has a variety of achievable structures, two of which are exemplified below.

[0224] For example, as shown in FIG16 , the limiting structure 309 may include a limiting groove 3091 and a limiting post 3092. The limiting groove 3091 extends parallel to the extension direction of the first strap 10 (e.g., direction L in FIG16 ). One of the limiting groove 3091 and the limiting post 3092 is disposed on the rack 302, while the other is disposed on the clasp 301. For example, in FIG16 , the limiting groove 3091 is disposed on the rack 302, and the limiting post 3092 is disposed on the clasp 301. The limiting post 3092 may be integrally formed with the clasp 301.

[0225] 16 , the limiting groove 3091 may be provided between the mounting groove 3071 and the mounting groove 3072. The length of the limiting groove 3091 may be set according to the telescopic distance.

[0226] In another example, as shown in Figure 17, a structural member 3020 can be set on the clasp 301, and the structural member 3020 forms a limiting cavity 3015. At least a portion of the rack 302 can be set in the limiting cavity 3015. In this way, the limiting cavity 3015 is used to constrain the movement of the rack to limit the moving distance of the rack 302.

[0227] The clamping structure 304 of the pressing piece 303 extends into the tooth groove of the rack 302. In order to prevent the clamping structure 304 from falling out of the tooth groove when the pressing piece 303 is not pressed, the embodiment of the present application also provides a pulling piece, as shown in Figure 18. Figure 18 simply shows an embodiment of the pulling piece, which includes an elastic piece 311. One end of the elastic piece 311 is connected to the pressing piece 303, and the other end is connected to the buckle 301; the elastic piece 311 is used to give the clamping structure 304 an elastic force toward the rack 302. In this way, when the pressing piece is no longer pressed, the clamping structure 304 can be tightly attached to the tooth groove, thereby improving the reliability of the entire machine.

[0228] Figure 19 illustrates another arrangement of the elastic member 311, where the pressing member includes a first pressing member 3031 and a second pressing member 3032. There is a gap between the snap-fit ​​structure 304 at the end of the first pressing member 3031 and the first part 303A of the second pressing member 3032. The elastic member 311 can be arranged in the gap and connected to the snap-fit ​​structure 304 and the first part 303A respectively.

[0229] There is a gap between the clamping structure 304 at the end of the second pressing member 3032 and the first portion 303A of the first pressing member 3031 . The elastic member 311 can be disposed in the gap and connected to the clamping structure 304 and the first portion 303A respectively.

[0230] When the elastic member 311 is connected between the clasp 301 and the pressing member 303 as shown in Figure 18, the elastic member 311 has multiple installation methods. As shown in Figure 20, a hole 3016 is provided on the clasp 301 for the pressing member 303 to pass through. The elastic member 311 can be set in the hole 3016, with one end abutting against the clasp 301 and the other end abutting against the pressing member 303.

[0231] When pressing the pressing member 303, in order to limit the distance the pressing member 303 moves, as shown in Figure 21, a limiting structure 310 can be provided, which limits the distance the pressing member 303 moves along the third direction, which is perpendicular or nearly perpendicular to the extension direction of the first belt body 10.

[0232] In some possible implementations, as shown in FIG21 , the limiting structure 310 includes: a limiting groove 3101 and a limiting post 3102 disposed within the limiting groove 3101; the limiting groove 3101 extends in a direction parallel to the third direction described above; one of the limiting groove 3101 and the limiting post 3102 is disposed on the pressing member 303, and the other is disposed on the clasp 301. For example, in the example of FIG21 , the limiting groove 3101 is disposed on the clasp 301, and the limiting post 3102 is disposed on the pressing member 303.

[0233] In other possible implementation methods, a structural part can be set on the clasp 301, the structural part forms a limiting cavity, the snap-fit ​​structure is set in the limiting cavity, and the limiting cavity is used to limit the moving distance of the snap-fit ​​structure to limit the moving distance of the pressing part.

[0234] To achieve the connection between the first strap and the second strap, see Figures 22 and 23. Figure 22 exemplarily shows an exploded view of a portion of the structure of the wearable device, and Figure 23 is another perspective view of Figure 22. The watchband provided in the embodiment of the present application may also include a first plate 40 and a second plate 50. One end of the first plate 40 is rotatably connected to the clasp 301, and the other end is rotatably connected to the second plate 50. For example, one end of the first plate 40 is rotatably connected to the clasp 301 via a rotating shaft 601, and the other end is rotatably connected to the second plate 50 via a rotating shaft 602.

[0235] The second plate 50 can be connected to the clasp 301 via a buckle 70. The buckle 70 may include a buckle 702 and a slot 701, one of which is provided on the clasp 301 and the other on the second plate 50. For example, in the example of FIG23 , the buckle 702 is provided on the clasp 301, and the slot 701 is provided on the second plate 50.

[0236] The second plate 50 is used to connect with the second belt body. For example, in FIG. 23 , the second plate 50 has a mounting cavity 501 for the second belt body to pass through.

[0237] 22 and 23 , two first plates 40 may be included, one second plate 50 may be included, and one second plate 50 may be disposed between the two first plates 40. In other examples, one first plate 40 may be included, two second plates 50 may be included, and one first plate 40 may be disposed between the two second plates 50. In still other examples, more first plates 40 and more second plates 50 may be included.

[0238] In the example of the present application, as shown in FIG23 , the limiting post 3092 for limiting the movement distance of the rack 302 not only serves as a limiter, but also connects the first shell and the second shell of the clasp 301. In some examples, the limiting post can extend from the outer wall of the clasp 301 into the clasp 301.

[0239] In order to improve the appearance of the entire device, a countersunk hole 3017 can be opened on the outer wall surface of the buckle 301, and the limiting column 3092 can be set in the countersunk hole 3017.

[0240] As shown in Figure 23, at least a portion of the shaft 601 that rotatably connects the first plate 40 and the clasp 301 can be hidden inside the clasp. For example, a shaft hole 3018 can be provided in the clasp 301, and the shaft 601 that rotatably connects the first plate 40 and the clasp 301 can be disposed within the shaft hole 3018. Compared to providing a protrusion on the outer wall of the clasp, disposing the shaft on the protrusion can reduce the thickness of the device.

[0241] In the above embodiment, the length of the watch strap is fine-tuned by moving the strap body to accurately fit the wrist. The present application also provides other structures that can fine-tune the length of the watch strap, as follows:

[0242] As shown in Figures 24 and 25, Figure 24 is a partial structural diagram of a watch strap provided in an embodiment of the present application, and Figure 25 is an exploded view of Figure 24. In this embodiment, a first strap 10 is provided at the end with a clasp 301 and further includes a first plate 40 and a second plate 50. The first plate 40 is fixedly connected to the clasp 301, for example, by the fastener 80 shown in Figure 25. The second plate 50 is used to connect to the second strap 20 and is engaged with the clasp 301. Furthermore, the first plate 40 and the second plate 50 are rotatably connected.

[0243] In the present example, at least one of the first plate 40 and the second plate 50 is a telescopic plate. For example, as shown in FIG26 , the first plate 40 fixedly connected to the clasp 301 can be a telescopic plate, that is, the first plate 40 can be telescopic along its own length direction R; for another example, as shown in FIG27 , the second plate 50 rotatably connected to the first plate 40 can be a telescopic plate, that is, the second plate 50 can be telescopic along its own length direction R; for another example, the first plate 40 and the second plate 50 can both be telescopic plates.

[0244] As shown in Figures 26 and 27, the connection position between the second plate 50 and the clasp 301 includes a first gear and a second gear. When at least one of the first plate 40 and the second plate 50 is extended or retracted, the connection position between the second plate 50 and the clasp 301 can be switched between the first gear and the second gear.

[0245] For example, when the telescopic plate is extended, the connection between the second plate 50 and the clasp 301 can be in the first position, which can reduce the radial dimension of the loop formed by the first and second straps, thereby shortening the watch strap. When the telescopic plate is retracted, the connection between the second plate 50 and the clasp 301 can be in the second position, which can increase the radial dimension of the loop formed by the first and second straps, thereby lengthening the watch strap.

[0246] In order to realize the extension and retraction of the telescopic plate, there are multiple ways to realize the extension and retraction of the telescopic plate.

[0247] For example, a telescopic plate can be made of a telescopic material.

[0248] For another example, as shown in Figure 28, Figure 28 is a simplified structural diagram of a telescopic plate given in an embodiment of the present application. The telescopic plate may include a first telescopic section 901 and a second telescopic section 902. The first telescopic section 901 and the second telescopic section 902 are connected by an elastic member 903, that is, one end of the elastic member 903 is connected to the first telescopic section 901, and the other end of the elastic member 903 is connected to the second telescopic section 902, wherein the elastic member 903 is used to give the second telescopic section 902 and the first telescopic section 901 an elastic force to stretch relative to each other. For example, when the elastic member 903 is in the first state, the connection position of the second plate 50 and the clasp 301 is in the first gear, and when the elastic member 903 is in the second state, the connection position of the second plate 50 and the clasp 301 is in the second gear.

[0249] In the example of Figure 28 , the first plate 40 fixedly connected to the clasp 301 includes a first telescopic section 901 and a second telescopic section 902. In other examples, the second plate 50 rotatably connected to the first plate 40 may include a first telescopic section 901 and a second telescopic section 902, and an elastic member 903 connecting the first telescopic section 901 and the second telescopic section 902.

[0250] In order to improve the telescopic stability, in some examples, as shown in Figure 28, a slide groove 904 can be opened on the second telescopic section 902, and the extension direction of the slide groove 904 is parallel to the telescopic direction of the two telescopic sections; a guide column 905 can also be set on the first telescopic section 901, and the guide column 905 is fixedly connected to the first telescopic section 901, and the guide column 905 extends into the slide groove 904 and can slide along the extension direction of the slide groove 904.

[0251] The elastic member 903 is disposed in the sliding groove 904 , with one end of the elastic member 903 connected to the guide post 905 , and the other end connected to the second telescopic section 902 .

[0252] In the example of Figure 28, the first plate 40 fixedly connected to the clasp 301 includes a first telescopic section 901 and a second telescopic section 902. The first telescopic section 901 is fixedly connected to the clasp 301, and the second telescopic section 902 is rotatably connected to the second plate 50. The slide groove 904 is opened on the second telescopic section 902, and the guide column 905 is fixedly set on the first telescopic section 901.

[0253] In other feasible structures, the sliding groove 904 may be provided on the first telescopic section 901 , and the guide post 905 may be fixedly provided on the second telescopic section 902 .

[0254] In this way, the first telescopic section 901 and the second telescopic section 902 are in an extended state under the elastic force of the elastic member 903, so that the connection position between the second plate 50 and the clasp 301 can be in one gear position. When the user applies force to the first telescopic section 901 or the second telescopic section 902, the connection position between the second plate 50 and the clasp 301 can be in another gear position.

[0255] The following two methods of shifting gears are given in conjunction with the accompanying drawings, as follows:

[0256] An example: as shown in Figure 28, the slide groove 904 has a first end and a second end, the first end is farther away from the connection position A between the second telescopic section 902 and the second plate 50 than the second end; the first gear is farther away from the connection position A between the second telescopic section 902 and the second plate 50 than the second gear.

[0257] When the guide column 905 is located at the first end of the slide groove 904, the elastic force exerted by the elastic member 903 on the first telescopic section 901 and the clasp 301 is toward the clasp 301 (as shown by the black solid line with an arrow in FIG28 ), and the elastic force exerted by the elastic member 903 on the second telescopic section 902 is away from the clasp 301 (as shown by the black dotted line with an arrow in FIG28 ), so that the connection position between the second plate 50 and the clasp 301 is in the first position, which can achieve tight wearing.

[0258] As shown in Figure 29, when a thrust is applied to the clasp 301, the thrust is directed toward the first telescopic section 901. Under the action of the thrust, when the guide column 905 slides from the first end toward the second end, the connection position between the second plate 50 and the clasp 301 can be switched from the first gear to the second gear, thereby achieving loose wearing.

[0259] Another example: as shown in Figure 30, when the guide column 905 is located at the second end of the slide groove 904, the elastic force applied by the elastic member 903 to the first telescopic section 901 and the clasp 301 is away from the clasp 301 (as shown by the black solid line with an arrow in Figure 30), and the elastic force applied by the elastic member 903 to the second telescopic section 902 is toward the clasp 301 (as shown by the black dotted line with an arrow in Figure 30), so that the connection position between the second plate 50 and the clasp 301 is in the second gear, which can achieve loose wearing.

[0260] As shown in Figure 31, when a pulling force is applied to the clasp 301, the pulling force deviates from the first telescopic section 901. Under the action of the pulling force, when the guide column 905 slides from the second end toward the first end, the connection position between the second plate 50 and the clasp 301 can be switched from the second gear to the first gear, thereby achieving a tight fit.

[0261] Figure 32 illustrates an illustrative embodiment of a possible structure for the first telescopic section 901 and the second telescopic section 902. The second telescopic section 902 is partially nested within the first telescopic section 901. The first telescopic section 901 includes a base plate 901B and a cover plate 901A. 901B and the cover plate 901A interlock together to form a cavity for accommodating the second telescopic section 902. This allows the elastic member 903 to be concealed within the cavity, enhancing the aesthetics of the device.

[0262] In the example of FIG32 , the second telescopic section 902 is sleeved inside the first telescopic section 901. In other examples, the first telescopic section 901 may also be sleeved inside the second telescopic section 902.

[0263] In order to limit the expansion and contraction amount between the first expansion segment 901 and the second expansion segment 902 , the wearable device may further include a limiting structure, which is used to limit the movement amount of the first expansion segment 901 or the second expansion segment 902 .

[0264] As shown in Figure 33, a limiting structure is given as an example. The limiting structure may include a limiting column 907 and a limiting groove 906. The limiting column 907 can slide along the limiting groove 906. One of the limiting column 907 and the limiting groove 906 is set on the first telescopic section 901, and the other is set on the second telescopic section 902. For example, in Figure 33, the limiting column 907 is set on the first telescopic section 901, and the limiting groove 906 is opened on the second telescopic section 902.

[0265] 33 , the limiting structure is closer to the connection position between the second plate 50 and the first plate 40 than the elastic member 903. Of course, in some examples, the elastic member 903 may be closer to the connection position between the second plate 50 and the first plate 40.

[0266] In order to switch the connection position of the second plate 50 and the clasp 301 between the first gear and the second gear, a buckle structure can be set. As shown in Figure 34, a protrusion 3019 can be set on the clasp 301, and a first card slot 501 and a second card slot 502 are provided on the second plate 50. The first card slot 501 and the second card slot 502 are arranged along the extension direction, and the first card slot 501 is farther away from the connection position between the second plate and the first plate relative to the second card slot 502; when the protrusion 3019 is located in the first card slot 501, the connection position of the second plate 50 and the clasp 301 is in the first gear, and when the protrusion 3019 is located in the second card slot 502, the connection position of the second plate 50 and the clasp 301 is in the second gear.

[0267] In the example of FIG34 , the protrusion 3019 is provided on the clasp 301 , and the first and second slots 501 and 502 are provided on the second plate 50 . Alternatively, the protrusion 3019 can be provided on the second plate 50 , and the first and second slots 501 and 502 can be provided on the clasp 301 .

[0268] In the above example of the present application, a first gear and a second gear that can be switched are included. In some feasible structures, more switching gears can be set. For example, based on the structure of Figure 34, more card slots can be set, and the protrusion 3019 can be used to switch between at least three card slots to achieve switching between different gears. This can further increase the adjustment amount of the watch strap, or make the adjustment amount of the watch strap smaller and more accurately adapt to the wrist.

[0269] In the above-described structure for shifting gears by using a telescopic plate, two first plates 40 may be included, one second plate 50 may be included, and one second plate 50 may be disposed between the two first plates 40. In other examples, one first plate 40 may be included, two second plates 50 may be included, and one first plate 40 may be disposed between the two second plates 50. In still other examples, more first plates 40 and more second plates 50 may be included.

[0270] Based on the above, this application provides two possible structures for fine-tuning the watch strap, one is by moving the strap body, and the other is by switching gears. In some wearable devices, not only the method of moving the strap body can be used, but also the method of switching gears can be used.

[0271] As shown in Figure 35, the wearable device in Figure 35 has a rack for driving the strap, a pressing member for pressing, and other structures within the clasp 301. In addition, it also includes a retractable telescopic plate, such as the first telescopic section 901 and the second telescopic section 902 shown in Figure 35. This can further reduce the amount of fine-tuning required for the strap, improve the performance of the device, and enhance the user experience.

[0272] In Figure 35 , because the expansion plate is fixedly connected to the clasp 301, the watch strap also needs to move relative to the clasp 301. In one example, the watch strap may include a first strap segment 10A and a second strap segment 10B rotatably connected to the first strap segment 10A. The first strap segment 10A can slide along the clasp 301 and can be fixedly connected to the rack. The second strap segment 10B can be rotatably connected to the first strap segment 10A via a rotating shaft 10C.

[0273] In the description of this specification, specific features, structures, materials or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

[0274] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A watchband connecting structure, the watchband connecting structure is used to connect the first strap body of the watchband, characterized in that: The strap connection structure comprises: Buckle; a rack, arranged on the clasp, the rack being movable along the extending direction of the first strap body, and the rack being used for being fixedly connected to the first strap body; A pressing piece is arranged on the clasp, and has a snap-fitting structure cooperating with the rack. The pressing piece can move along a direction intersecting with the extending direction of the first strap body so that the snap-fitting structure enters and exits the tooth groove of the rack.

2. The watchband connection structure according to claim 1, characterized in that: The strap connection structure further includes: a first elastic member; When the rack moves along the first direction, the first elastic member is used to give the rack an elastic force along the second direction; The first direction is opposite to the second direction, and both the first direction and the second direction are parallel to an extending direction of the first belt body.

3. The watchband connection structure according to claim 2, characterized in that: One end of the first elastic member is connected to the buckle, and the other end is connected to the rack; the first direction is the direction from the first belt body to the rack, and the second direction is the direction from the rack to the first belt body.

4. The watchband connection structure according to claim 2 or 3, characterized in that: The rack is provided with a mounting groove, the mounting groove having a first end and a second end, the first end of the mounting groove being farther away from the first belt body than the second end, and the first elastic member being located in the mounting groove; The clasp is provided with an abutment member, and the abutment 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 abuts against the rack.

5. The watchband connection structure according to claim 4, characterized in that: The installation groove comprises a first section and a second section which are connected, the groove width of the first section is greater than the groove width of the second section, a part of the first elastic member is located in the first section, and another part is located in the second section.

6. The watchband connection structure according to any one of claims 1 to 5, characterized in that: The strap connection structure further includes: a first limiting structure; The first limiting structure is used to limit the distance that the rack moves along the extending direction of the first belt body.

7. The watchband connection structure according to claim 6, characterized in that: The first limiting structure comprises: A first limiting groove and a first limiting column arranged in the first limiting groove; The extension direction of the first limiting groove is parallel to the extension direction of the first belt body; One of the first limiting groove and the first limiting column is arranged on the rack, and the other is arranged on the clasp.

8. The watchband connection structure according to any one of claims 1 to 7, characterized in that: The 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 is connected to the buckle; The second elastic member is used to give the clamping structure an elastic force toward the rack.

9. The watchband connection structure according to any one of claims 1 to 8, characterized in that: The watchband connection structure further includes: a second limiting structure; The second limiting structure is used to limit the distance that the pressing member moves along a third direction, and the third direction intersects with the extending direction of the first belt body.

10. The watchband connection structure according to claim 9, characterized in that: The second limiting structure comprises: A second limiting groove and a second limiting column arranged in the second limiting groove; The extension direction of the second limiting groove is perpendicular to the extension direction of the first belt body; One of the second limiting groove and the second limiting column is arranged on the pressing member, and the other is arranged on the clasp.

11. The watchband connection structure according to any one of claims 1 to 10, characterized in that: The tooth grooves on the rack include a first row of tooth grooves and a second row of tooth grooves, the first row of tooth grooves and the second row of tooth grooves are arranged on opposite sides of the rack, and the first row of tooth grooves and the second row of tooth grooves are parallel to the extension direction of the first belt body; The pressing member includes a first pressing member and a second pressing member, wherein the first pressing member and the second pressing member are arranged on two opposite sides of the clasp; Any one of the first pressing member and the second pressing member comprises: a first portion and a second portion connected to the first portion, the first portion is located outside the clasp, the second portion extends into the clasp, and the clamping structure is arranged at an end of the second portion away from the first portion; The clamping structure of the first pressing member cooperates with the first row of tooth grooves, and the clamping structure of the second pressing member cooperates with the second row of tooth grooves.

12. The watchband connection structure according to claim 11, characterized in that: The first row of tooth grooves is closer to the first portion of the second pressing member than the second row of tooth grooves; The second row of tooth grooves is closer to the first portion of the first pressing member than the first row of tooth grooves; The second portion of the first pressing member spans across the second row of tooth grooves, so that the clamping structure of the first pressing member cooperates with the first row of tooth grooves; The second portion of the second pressing member spans across the first row of tooth grooves, so that the clamping structure of the second pressing member cooperates with the second row of tooth grooves.

13. The watchband connection structure according to any one of claims 1 to 12, characterized in that: The clasp is provided with a first slide groove, the extension direction of the first slide groove is parallel to the extension direction of the first strap body, and the first strap body can slide along the first slide groove.

14. The watchband connection structure according to any one of claims 1 to 13, characterized in that: The watchband connection structure also includes: A first plate and a second plate, one end of the first plate is rotatably connected to the buckle, and the other end is rotatably connected to the second plate, the second plate is connected to the buckle, the buckle is used to connect to the first strap, and the second plate is used to connect to the second strap of the strap.

15. The watchband connection structure according to any one of claims 1 to 13, characterized in that: The watchband connection structure also includes: a first plate and a second plate, one end of the first plate is fixedly connected to the clasp, and the other end is rotatably connected to the second plate, the second plate is connected to the clasp, the clasp is used to connect to the first strap, and the second plate is used to connect to the second strap of the strap; At least one of the first plate and the second plate is a telescopic plate; The connection position between the second plate and the clasp includes a first gear position and a second gear position. When the telescopic plate is extended or retracted, the connection position between the second plate and the clasp can be switched between the first gear position and the second gear position.

16. The watchband connection structure according to claim 15, characterized in that: The telescopic plate comprises: a first telescopic section and a second telescopic section; The watchband connection structure also includes: a third elastic member, one end of which is connected to the first telescopic section, and the other end of which is connected to the second telescopic section, and the third elastic member is used to give elastic force to the second telescopic section and the first telescopic section to extend relative to each other; When the third elastic member is in the first state, the connection position between the second plate and the buckle is in the first gear position; When the third elastic member is in the second state, the connection position between the second plate and the buckle is in the second gear position.

17. The watchband connection structure according to claim 16, characterized in that: The watchband connection structure also includes: A second chute, wherein the second chute is provided on the second telescopic section, and an extending direction of the second chute is parallel to a telescopic direction of the second telescopic section; A guide post, wherein the guide post is fixedly connected to the first telescopic section, and the guide post is located in the second slide groove and can slide along the extension direction of the second slide groove; The third elastic member is disposed in the second sliding groove, one end of the third elastic member abuts against the guide column, and the other end of the third elastic member abuts against the second telescopic section.

18. The watchband connection structure according to claim 17, characterized in that: The first plate includes the first telescopic section and the second telescopic section, the first telescopic section is fixedly connected to the buckle, and the second telescopic section is rotatably connected to the second plate.

19. The watchband connection structure according to claim 17 or 18, characterized in that: The second slide groove has a first end and a second end, and the first end of the second slide groove is farther away from the connection position between the second telescopic section and the second plate than the second end; The first gear is further away from the connection position between the second telescopic section and the second plate than the second gear; When the guide column is located at the first end of the second slide slot, the connection position between the second plate and the buckle is in the first gear position; Under the first force, when the guide column slides from the first end toward the second end, the connection position between the second plate and the clasp can be switched from the first gear position to the second gear position, and the first force faces the clasp.

20. The watchband connection structure according to claim 17 or 18, characterized in that: The second slide groove has a first end and a second end, and the first end of the second slide groove is farther away from the second telescopic section than the second end. The connection position of the second plate; The first gear is further away from the connection position between the second telescopic section and the second plate than the second gear; When the guide column is located at the second end of the second slide slot, the connection position between the second plate and the clasp is in the second gear position; Under the second force, when the guide column slides from the second end toward the first end, the connection position between the second plate and the clasp is in a position that can be switched from the second gear position to the first gear position, and the second force deviates from the clasp.

21. The watchband connection structure according to any one of claims 16 to 20, characterized in that: The first telescopic section has a cavity therein, and at least a portion of the second telescopic section extends into the cavity; The third elastic member is disposed in the cavity.

22. The watchband connection structure according to any one of claims 16 to 21, characterized in that: The watchband connection structure also includes: A buckle and a slot, one of the buckle and the slot is arranged on the buckle, and the other is arranged on the second plate; The card slot includes a first card slot and a second card slot, the first card slot and the second card slot are arranged along the telescopic direction of the second telescopic section, and the first card slot is farther away from the connection position between the second telescopic section and the second plate than the second card slot; When the buckle is located in the first slot, the connection position between the second plate and the buckle is in the first position; when the buckle is located in the second slot, the connection position between the second plate and the buckle is in the second position.

23. The watchband connection structure according to any one of claims 16 to 22, characterized in that: The strap connection structure also includes: a third limiting structure, and the third limiting structure is used to limit the expansion and contraction amount of the second expansion section relative to the first expansion section.

24. The watchband connection structure according to claim 23, characterized in that: The third limiting structure comprises: a third limiting groove and a third limiting column arranged in the third limiting groove; The extension direction of the third limiting groove is parallel to the extension direction of the second telescopic section; One of the third limiting groove and the third limiting column is arranged on the first telescopic section, and the other is arranged on the second telescopic section.

25. A watch strap, characterized in that: include: The first band body; The watch strap connection structure according to any one of claims 1 to 24; Wherein, the rack of the strap connection structure is fixedly connected to the first strap body.

26. The watch strap according to claim 25, characterized in that: The watch strap also includes a second strap body; The strap connection structure comprises: a first plate and a second plate, one end of the first plate is rotatably connected to the buckle, and the other end of the first plate is rotatably connected to the second plate, the second plate is connected to the buckle, and the second plate is connected to the second strap body; The clasp is provided with a third slide groove, the extension direction of the third slide groove is parallel to the extension direction of the first belt body, and the first belt body section can slide along the third slide groove.

27. The watch strap according to claim 25, characterized in that: The watch strap also includes a second strap body; The strap connection structure comprises: a first plate and a second plate, one end of the first plate is fixedly connected to the buckle, and the other end is rotatably connected to the second plate, the second plate is connected to the buckle, 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; The connection position between the second plate and the clasp includes a first gear position and a second gear position, and when the telescopic plate is extended or retracted, the connection position between the second plate and the clasp can be switched between the first gear position and the second gear position; The first belt body includes a first belt body segment and a second belt body segment; The clasp is provided with a third slide groove, the extension direction of the third slide groove is parallel to the extension direction of the first belt body, and the first belt body segment can slide along the third slide groove; The first belt body segment is rotatably connected to the second belt body segment.

28. A watchband connecting structure, the watchband connecting structure is used to connect a first strap body and a second strap body of a watchband, characterized in that: The strap connection structure comprises: Buckle; A first plate and a second plate, one end of the first plate is fixedly connected to the clasp, and the other end is rotatably connected to the second plate, the second plate is connected to the clasp, the clasp is used to connect to the first belt body, and the second plate is used to connect to the second belt body; At least one of the first plate and the second plate is a telescopic plate; The connection position between the second plate and the clasp includes a first gear position and a second gear position. When the telescopic plate is extended or retracted, the connection position between the second plate and the clasp can be switched between the first gear position and the second gear position.

29. The watchband connection structure according to claim 28, characterized in that: The telescopic plate comprises: a first telescopic section and a second telescopic section; The watchband connection structure also includes: An elastic member, one end of which is connected to the first telescopic section, and the other end of which is connected to the second telescopic section, and the elastic member is used to give elastic force to the second telescopic section and the first telescopic section to extend relative to each other; When the elastic member is in the first state, the connection position between the second plate and the buckle is in the first gear position; When the elastic member is in the second state, the connection position between the second plate and the buckle is in the second gear position.

30. The watchband connection structure according to claim 29, characterized in that: The watchband connection structure also includes: A slide groove, wherein the slide groove is provided on the second telescopic section, and an extending direction of the slide groove is parallel to a telescopic direction of the second telescopic section; A guide post, the guide post is fixedly connected to the first telescopic section, and the guide post is located in the slide groove and can slide along the extension direction of the slide groove; The elastic member is arranged in the slide groove, one end of the elastic member abuts against the guide column, and the other end of the elastic member abuts against the second telescopic section.

31. The watchband connection structure according to claim 30, characterized in that: The first plate includes the first telescopic section and the second telescopic section, the first telescopic section is fixedly connected to the buckle, and the second telescopic section is rotatably connected to the second plate.

32. The watchband connection structure according to claim 30 or 31, characterized in that: The slide groove has a first end and a second end, and the first end of the slide groove is farther away from the connection position between the second telescopic section and the second plate than the second end; The first gear is further away from the connection position between the second telescopic section and the second plate than the second gear; When the guide column is located at the first end of the slide slot, the connection position between the second plate and the buckle is in the first gear position; Under the first force, when the guide column slides from the first end toward the second end, the connection position between the second plate and the clasp can be switched from the first gear position to the second gear position, and the first force faces the clasp.

33. The watchband connection structure according to claim 30 or 31, characterized in that: The slide groove has a first end and a second end, and the first end of the slide groove is farther away from the connection position between the second telescopic section and the second plate than the second end; The first gear is further away from the connection position between the second telescopic section and the second plate than the second gear; When the guide column is located at the second end of the slide slot, the connection position between the second plate and the buckle is in the second gear position; Under the second force, when the guide column slides from the second end toward the first end, the connection position between the second plate and the clasp is in a position that can be switched from the second gear position to the first gear position, and the second force deviates from the clasp.

34. The watchband connection structure according to any one of claims 29 to 33, characterized in that: The first telescopic section has a cavity therein, and at least a portion of the second telescopic section extends into the cavity; The elastic member is arranged in the cavity.

35. The watchband connection structure according to any one of claims 29 to 34, characterized in that: The strap connection structure further includes: a limiting structure, and the limiting structure is used to limit the expansion and contraction amount of the second expansion section relative to the first expansion section.

36. The watchband connection structure according to claim 35, characterized in that: The limiting structure comprises: a limiting groove and a limiting column arranged in the limiting groove; The extending direction of the limiting groove is parallel to the extending direction of the second telescopic section; One of the limiting groove and the limiting column is arranged on the first telescopic section, and the other is arranged on the second telescopic section.

37. The watchband connection structure according to any one of claims 29 to 36, characterized in that: The watchband connection structure also includes: A buckle and a slot, one of the buckle and the slot is arranged on the buckle, and the other is arranged on the second plate; The card slot includes a first card slot and a second card slot, the first card slot and the second card slot are arranged along the telescopic direction of the second telescopic section, and the first card slot is farther away from the connection position between the second telescopic section and the second plate than the second card slot; When the buckle is located in the first slot, the connection position between the second plate and the buckle is in the first position; when the buckle is located in the second slot, the connection position between the second plate and the buckle is in the second position.

38. A watch strap, characterized in that: include: a first belt body and a second belt body; The watch strap connection structure according to any one of claims 28 to 37; Wherein, the first strap body is rotatably connected to the buckle, and the second strap body is connected to the second plate.

39. A wearable device, characterized in that: include: dial; A watch strap as claimed in claim 25, 26, 27 or 38; Wherein, the watch strap is connected to the watch dial.

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