Fixing band, watchband and wearable device

Abstract

The utility model provides a fixing band, a watchband and wearable equipment. The watch buckle comprises a first folding piece, a second folding piece, a mounting seat and an elastic buckle assembly. One end of the first folding piece is fixed on the mounting seat, the other end of the first folding piece is rotatably connected with one end of the second folding piece, and the other end of the second folding piece is connected with the mounting seat through an elastic buckle assembly. The first part and the second part of the elastic buckle assembly can be locked or separated, so that the first folding piece and the second folding piece can be kept closed or opened. The fixing bands comprise the first fixing band and the second fixing band, the containing groove is formed in the inner side of the first fixing band, part of the watch buckle can be contained in the containing groove, the thickness of the overlapping position of the watch buckle and the first fixing band is reduced, and the wearing comfort is improved. The watchband comprises a first fixing band, a second fixing band and a watch buckle, and the watch buckle can realize detachable connection between the first fixing band and the second fixing band. The wearable device comprises a device body and a watchband, and the first fixing band and the second fixing band are connected to the device body.

Description

[0001] This application claims the priority of the Chinese patent application filed with the State Intellectual Property Office on September 18, 2024, with application number 202422286571.8 and application name “A fixing strap, watch strap and wearable device”, all contents of which are incorporated by reference in this application. Technical Field

[0002] The embodiments of the present application relate to the technical field of wearable devices, and in particular to a fixing strap, a watch strap and a wearable device. Background Art

[0003] In wearable devices (such as watches), a fixed strap is connected to each end of the device body. The buckle can realize the detachable connection between the two fixed straps and the adjustment of the length of the fixed strap. How to improve the comfort of users wearing wearable devices is a topic that the industry needs to face. Utility Model Content

[0004] The embodiments of the present application provide a fixing belt, a watch strap and a wearable device that are comfortable to wear.

[0005] The embodiment of the present application adopts the following technical solution:

[0006] In a first aspect, an embodiment of the present application provides a clasp, comprising: a first folding piece, a second folding piece, a mounting seat, and a snap assembly. The first folding piece has a first end and a second end opposite to each other, and the first end is fixed to the mounting seat. The second folding piece has a third end and a fourth end opposite to each other, and the second end and the third end are rotatably connected so that the first folding piece and the second folding piece can be closed or opened. The snap assembly comprises a first part disposed on the mounting seat, and a second part disposed at the fourth end. When the first folding piece and the second folding piece are closed, the first part and the second part of the snap assembly are locked. When the first folding piece and the second folding piece are opened, the first part and the second part of the snap assembly are separated.

[0007] The clasp provided in the embodiment of the present application has one end of the first folding member fixed on the mounting seat, the other end of the first folding member is rotatably connected to one end of the second folding member, and the other end of the second folding member is connected to the mounting seat via a snap assembly. The first part and the second part in the snap assembly can be locked or separated, so that the first folding member and the second folding member can remain closed or open. Compared with the related art using a hard interference structure of the first fastener and the second fastener, the snap assembly of this embodiment has a certain elasticity. During production and use, one of the first part and the second part has a large elastic stroke or elastic deformation. The first part and the second part are not easy to deform and fail, which can improve the reliability and stability of the clasp.

[0008] In an alternative implementation, the first folding member includes a first arc-shaped plate, and the second folding member includes a second arc-shaped plate; the opposite ends of the first arc-shaped plate are respectively a first end and a second end, and the opposite ends of the second arc-shaped plate are respectively a third end and a fourth end. The second end and the third end are rotatably connected by a pin shaft. When the first folding member and the second folding member are closed, the first arc-shaped plate and the second arc-shaped plate are arranged along the direction of the pin shaft, and the extending directions of the first arc-shaped plate and the second arc-shaped plate are the same.

[0009] The closed first folding member and the second folding member form an arc-shaped structure and are held between the first fixing band and the second fixing band, having a relatively small impact on the bending forms of the first fixing band and the second fixing band. At the same total thickness, the thicknesses of the first arc-shaped plate and the second arc-shaped plate can be made larger, increasing their rigidity and making them not easily deformed by force.

[0010] In an alternative implementation, the first arc-shaped plate and the second arc-shaped plate are rotatably connected by a pin shaft. Connecting holes are respectively provided at the ends of the first arc-shaped plate and the ends of the second arc-shaped plate, and the pin shaft is connected to the connecting holes of both, enabling both the first arc-shaped plate and the second arc-shaped plate to rotate around the pin shaft.

[0011] In an alternative implementation, there are multiple first arc-shaped plates, and the multiple first arc-shaped plates are arranged at intervals along the direction of the pin shaft (i.e., the axial direction of the pin shaft). When the first folding member and the second folding member are closed, at least one second arc-shaped plate is located between the multiple first arc-shaped plates. The rotational connection between the first arc-shaped plate and the second arc-shaped plate is stable and reliable.

[0012] In an alternative implementation, two first arc-shaped plates are arranged at intervals along the direction of the pin shaft, and one second arc-shaped plate is disposed between the two first arc-shaped plates. The rotational connection between the first arc-shaped plate and the second arc-shaped plate is stable and reliable. The position of the snap component can be set corresponding to the fourth end of the second arc-shaped plate, or can also be set corresponding to the first end of the first arc-shaped plate.

[0013] In an alternative implementation, two first arc-shaped plates and two second arc-shaped plates are configured in total, and the first arc-shaped plates and the second arc-shaped plates are arranged alternately in sequence along the direction of the pin shaft. The rotational connection between the first arc-shaped plate and the second arc-shaped plate is stable and reliable. The position of the snap component can be set corresponding to the fourth end of one of the second arc-shaped plates, or can also be set corresponding to the first end of the first arc-shaped plate.

[0014] In an alternative implementation, when multiple snap components are provided, one snap component can be set corresponding to the fourth end of the second arc-shaped plate near the middle position, and the other snap component can be set corresponding to the first end of the first arc-shaped plate near the middle position. The multiple snap components can make the connection between the second folding member and the mounting seat stable and reliable.

[0015] In an alternative implementation, a first arc-shaped plate and a second arc-shaped plate are arranged along the direction of the pin shaft (i.e., the axial direction of the pin shaft). The rotational connection between the first arc-shaped plate and the second arc-shaped plate is stable and reliable. The position of the snap component can be set corresponding to the fourth end of the second arc-shaped plate or corresponding to the first end of the first arc-shaped plate.

[0016] In an alternative implementation, the first part is a bayonet structure and the second part is a buckle, and the bayonet structure and the buckle can be snap-fitted.

[0017] In an alternative implementation, the first part is a buckle and the second part is a bayonet structure, and the bayonet structure and the buckle can be snap-fitted.

[0018] In an alternative implementation, the first end of the first folding member has a cover portion, the cover portion is fixed to the mounting base, the cover portion and the mounting base enclose a mounting groove, the bayonet structure is arranged at the mounting groove, and the cover portion has an avoidance area for partially exposing the bayonet structure. It is convenient to arrange the bayonet structure on the mounting base, and the mounting base and the cover portion can provide protection for the bayonet structure. The cover portion is fixed on the mounting base, so that the first end of the first folding member is fixed on the mounting base.

[0019] In an alternative implementation, the mounting groove can be formed on the mounting base, and the cover portion covers the notch of the mounting groove. Or, the mounting groove can be formed on the cover portion, and the mounting base covers the notch of the mounting groove.

[0020] In an alternative implementation, the mounting base is a strip-shaped cuboid, and the length direction of the mounting base and the width direction of the fixing belt can be parallel. The cover portion can be in the shape of a rectangular plate.

[0021] In an alternative implementation, the cover portion and the mounting base can be assembled by fasteners (such as screws), buckles, bonding, etc.

[0022] In an alternative implementation, the cover portion and the mounting base are connected by fasteners, and the fasteners are arranged along the stacking direction of the cover portion and the mounting base.

[0023] In an alternative implementation, the cover portion and the mounting base are connected by fasteners. An outward convex structure can be arranged on the side of the cover portion facing the mounting base, and an inward concave structure can be arranged on the side of the mounting base facing the cover portion. The inward concave structure and the outward convex structure are adapted to each other. Aligning and assembling the outward convex structure on the inward concave structure can increase the effective length of the fasteners, make the connection between the cover portion and the mounting base reliable, and the total thickness of the cover portion and the mounting base can be made smaller.

[0024] In an alternative implementation, when the outward convex structure is in the shape of an outward convex frame, the inward concave structure is a frame-shaped groove; or when the outward convex structure is in the shape of an outward convex rectangle, the inward concave structure is a rectangular groove.

[0025] In an optional implementation, the bayonet structure may include a sliding buckle and an elastic member, wherein the sliding buckle is movably mounted on the mounting seat, one end of the elastic member is arranged opposite to the sliding buckle, and the other end of the elastic member is arranged opposite to the wall of the mounting seat, and the elastic member is used to make the sliding buckle elastically expand and contract. The elastic member is in an extended state, the sliding buckle is in an extended position, and the snap assembly is in a locked state or a separated state. The elastic member is in a compressed state, the sliding buckle is in a retracted position, and the snap assembly is in a critical state. During the contact and fastening process between the sliding buckle and the snap, the elastic member can be stretched and deformed, and the sliding buckle can have a larger sliding stroke under the action of the elastic member. The sliding buckle and the snap are not easily deformed and failed due to stress, so that the reliability and stability of the watch buckle are relatively high.

[0026] When the snap assembly is in a locked state, the elastic member on the mounting seat stretches to its maximum length, the stretched elastic member causes the sliding member to extend, and the extended sliding member and the buckle are in contact and engaged. The first folding member and the second folding member remain closed. When the snap assembly is in a separated state, that is, the first part and the second part are separated, the elastic member on the mounting seat stretches to its maximum length, the stretched elastic member causes the sliding member to extend, and the sliding member and the buckle are completely separated. The first folding member and the second folding member remain open. When the snap assembly is in a critical state, the sliding member and the buckle are in contact, the sliding member compresses the elastic member on the mounting seat to store energy, and the length of the elastic member becomes smaller. By moving the buckle relative to the mounting seat, the buckle and the sliding member can be engaged or separated, and the elastic member on the mounting seat can be restored to its maximum length.

[0027] In an optional implementation, the elastic member is an elastic structure such as a spring or a spring sheet.

[0028] In an optional implementation, the sliding buckle comprises a sliding portion and a first buckle portion, the sliding portion is slidably mounted on the mounting seat, the sliding portion has two opposite ends along its sliding direction (i.e., the moving direction of the sliding buckle), the first buckle portion is connected to one end of the sliding portion, and the elastic member is provided at the other end of the sliding portion. The buckle can be snapped to the first buckle portion.

[0029] The snap-on assembly is in a separated state. Under the action of the elastic member, the first snap portion extends out of the cover portion, and the buckle and the extended first snap portion are completely separated. When the buckle and the first snap portion need to be engaged, the buckle is pushed into the first buckle, and the buckle acts on the first buckle to shrink the first buckle, and the elastic member is compressed to store energy, and the snap-on assembly is in a critical state. The buckle is continued to be pushed into the first buckle, so that the buckle and the first buckle are engaged and matched, and the elastic member stretches and releases energy to extend the first buckle, and the snap-on assembly is in a locked state. During the contact and engagement process between the buckle and the sliding buckle, the elastic member can make the sliding buckle elastically expand and contract, and the bayonet structure has a large elastic stroke. The buckle and the sliding buckle are not easily deformed and failed due to stress, and the reliability of the watch buckle is high.

[0030] In an alternative implementation, in the sliding direction of the sliding part (i.e., the moving direction of the sliding fastener), the cross-sectional shape of the sliding part and the cross-sectional shape of the mounting groove of the mounting seat are adapted to each other, so that the sliding part can be slidably mounted on the mounting seat in a predetermined direction.

[0031] In an alternative implementation, in the sliding direction of the sliding part, both the cross-section of the sliding part and the cross-sectional shape of the mounting groove are rectangular. The sliding part can be in the shape of a cuboid or other shapes. The first buckling part can be in the shape of a sheet, L-shaped or other shapes.

[0032] In an alternative implementation, the mounting seat has a first stop wall, and the first stop wall is used to abut and cooperate with the sliding part to limit the sliding part; the first stop wall has an opening for the first buckling part to extend out.

[0033] In an alternative implementation, the first buckling part includes a first section and a second section, the first section and the second section are distributed in an L-shape and are connected, the first section is connected to the sliding part, and the second section is used to be buckled and cooperated with the buckle. The L-shaped first buckling part has good structural strength and improves the reliability of the first buckling part. Under the action of the elastic member, the sliding part abuts against the first stop wall, the first section is located at the opening, and the second section extends out of the opening.

[0034] In an alternative implementation, the sliding fastener further includes a first limiting part, and the first limiting part is connected to one end of the sliding part facing away from the first buckling part, and one end of the elastic member is mounted on the first limiting part. The reliability of the cooperation between the sliding fastener and the elastic member is improved.

[0035] In an alternative implementation, the elastic member is a compression spring. The first limiting part can be a columnar structure provided on the sliding part, and the compression spring is sleeved on the columnar structure.

[0036] In an alternative implementation, the elastic member is a compression spring. The first limiting part can also be a positioning hole provided on the sliding part, and one end of the compression spring extends into the positioning hole.

[0037] In an alternative implementation, a plurality of elastic members are provided on the sliding part, the mounting seat has a partition wall, and adjacent two elastic members are separated by the partition wall. Arranging a plurality of short elastic members side by side on a small-sized mounting seat can improve the elastic force received by the sliding part. The situation where two elastic members interfere with each other during use is avoided.

[0038] In an alternative implementation, the head of the buckle has a first guiding surface, and during the process of the first folding member and the second folding member switching from the open state to the closed state, the first guiding surface is used to slidably contact the first buckling part, so that the snap-fastening component switches from the separated state to the critical state.

[0039] During the process of pressing the snap fastener assembly to push the buckle into the bayonet structure, the first guiding surface of the buckle head and the first buckling part are in sliding contact, enabling the first buckling part to switch from the extended position to the retracted position, and the elastic member to switch from extension to compression, that is, the snap fastener assembly switches from the separated state to the critical state, facilitating the user to push the buckle into the bayonet structure. The first guiding surface can be an arc surface.

[0040] In an optional implementation manner, the middle part of the buckle has a second guiding surface, which is used for sliding contact with the first buckling part during the process of the first folding member and the second folding member switching from closed to open, so that the snap fastener assembly switches from the locked state to the critical state.

[0041] During the process of pulling the buckle to disengage the buckle from the bayonet structure, the second guiding surface in the middle part of the buckle and the first buckling part are in sliding contact, enabling the first buckling part to switch from the extended position to the retracted position, and the elastic member to switch from extension to compression, that is, the snap fastener assembly switches from the locked state to the critical state, facilitating the user to disengage the buckle from the bayonet structure. The second guiding surface can be an arc surface.

[0042] In an optional implementation manner, the buckle includes a columnar part and a head. The head is connected to one end of the columnar part, and the other end of the columnar part is connected to the fourth end of the second folding member. One end of the head far from the columnar part has a first guiding surface. One side of the head facing the columnar part has a second guiding surface.

[0043] In an optional implementation manner, the bayonet structures are arranged in pairs. The first buckling parts in the paired bayonet structures are arranged facing each other at intervals, and the elastic telescopic directions of the paired bayonet structures are opposite. The buckle includes a columnar part and a head. The head is connected to one end of the columnar part, and the other end of the columnar part is connected to the fourth end of the second folding member. When the first folding member and the second folding member are closed, the columnar part is located between the paired first buckling parts, and the head abuts against the paired first buckling parts. The same buckle is snap-fitted with the paired bayonet structures, which can improve the connection reliability of the snap fastener assembly.

[0044] In an optional implementation manner, the moving direction of the sliding fastener, the telescopic direction of the elastic member, and the length direction of the mounting seat are parallel. The length direction of the mounting seat can be the width direction of the fixing band of the wearable device. The space in the length direction of the mounting seat is fully utilized, so that the width dimension of the mounting seat can be made smaller.

[0045] In an optional implementation manner, the mounting seat is in the shape of a cuboid. The length direction of the mounting seat is the width direction of the fixing band, the width direction of the mounting seat is the extending direction of the fixing band, and the thickness direction of the mounting seat is the thickness direction of the fixing band.

[0046] In an optional implementation manner, the moving direction of the sliding fastener is parallel to the telescopic direction of the elastic member, and the moving direction of the sliding fastener is perpendicular to the length direction of the mounting seat.

[0047] In an alternative implementation, the mounting base has a mounting hole; the sliding fastener includes a button portion and a second fastening portion. The button portion is slidably mounted on the mounting base and exposed at the mounting hole. The second fastening portion is connected to the button portion. An elastic member is disposed on a side of the button portion away from the mounting hole. The buckle can be snap-fitted to the second fastening portion. During the process of the buckle and the sliding fastener coming into contact and being snap-fitted, the elastic member can cause the sliding fastener to elastically expand and contract. The bayonet structure has a large elastic stroke, and the buckle and the sliding fastener are not easily deformed and fail under force, so the reliability of the watch buckle is high.

[0048] In an alternative implementation, in the sliding direction of the button portion (i.e., the moving direction of the sliding fastener), the cross-sectional shape of the button portion and the cross-sectional shape of a part of the mounting groove of the mounting base are adapted to each other, so that the button portion can be linearly slidably mounted on the mounting base along a predetermined direction.

[0049] In an alternative implementation, in the sliding direction of the button portion, both the cross-section of the button portion and the cross-sectional shape of a part of the mounting groove are rectangular. The button portion can be in the shape of a cuboid. The second fastening portion can be in the shape of a strip.

[0050] In an alternative implementation, the sliding fastener further includes a second limiting portion. The second limiting portion is connected to the button portion. The mounting base has a second retaining wall, and the second retaining wall is used to abut and cooperate with the second limiting portion to limit the button portion. The position of the button portion is limited to prevent the button portion from detaching from the mounting base.

[0051] In an alternative implementation, the second limiting portion can be a convex structure provided on the button portion, and the convex structure abuts and cooperates with the second retaining wall.

[0052] In an alternative implementation, a receiving groove is provided on a side of the button portion away from the mounting hole, and the elastic member is at least partially disposed in the receiving groove. The space occupied by the elastic member on the mounting base is reduced, which is convenient for positioning and installing one end of the elastic member on the button portion.

[0053] In an alternative implementation, the head of the buckle has a third guiding surface. During the process of the first folding member and the second folding member switching from the open state to the closed state, the third guiding surface is used to slidably contact the second fastening portion, so that the snap-fastening component switches from the separated state to the critical state.

[0054] During the process of pressing the snap-fastening component to push the buckle into the bayonet structure, the third guiding surface of the buckle head slidably contacts the second fastening portion, which can cause the second fastening portion to switch from the extended position to the retracted position, and the elastic member switches from the extended state to the compressed state, that is, the snap-fastening component switches from the separated state to the critical state, which is convenient for the user to push the buckle into the bayonet structure. The third guiding surface can be an inclined surface or an arc surface.

[0055] In an alternative implementation, the moving direction of the sliding fastener is parallel to the telescopic direction of the elastic member, and the moving direction of the sliding fastener is perpendicular to the length direction of the mounting base. By making full use of the space in the length direction of the mounting base, the button portion in the sliding fastener can be made relatively long, facilitating the user to press the button portion.

[0056] In an alternative implementation, the mounting base is in the shape of a cuboid. The length direction of the mounting base is the width direction of the fixing band, the width direction of the mounting base is the extending direction of the fixing band, and the thickness direction of the mounting base is the thickness direction of the fixing band.

[0057] In an alternative implementation, the moving direction of the sliding fastener is parallel to the telescopic direction of the elastic member, and the moving direction of the sliding fastener is parallel to the length direction of the mounting base.

[0058] In an alternative implementation, the bayonet structure may include a bendable elastic piece. The bendable elastic piece has a card slot with a variable mouth width. When the snap-fastener assembly is in the locked state or the separated state, the mouth width of the card slot is the first width. When the snap-fastener assembly is in the critical state, the mouth width of the card slot is the second width; the first width is less than the second width.

[0059] During the contact and buckling process between the bendable elastic piece and the buckle, the bendable elastic piece can be bent and deformed. The bendable elastic piece can have a large elastic deformation amount. Neither the bendable elastic piece nor the buckle is easily deformed and fails under force, making the reliability and stability of the watch buckle relatively high.

[0060] In an alternative implementation, the bendable elastic piece includes a first transverse arm, a first inclined arm, a second inclined arm, a second transverse arm, a third inclined arm, a fourth inclined arm, and a third transverse arm connected in sequence. The first transverse arm, the second transverse arm, and the third transverse arm are flush and arranged on the mounting base. The first inclined arm and the second inclined arm are arranged in parallel. The third inclined arm and the fourth inclined arm are arranged in parallel. The second inclined arm and the third inclined arm are spaced apart. A card slot is formed between the second inclined arm and the third inclined arm. When the snap-fastener assembly is in the locked state and the buckle is located between the second inclined arm and the third inclined arm, the second inclined arm and the third inclined arm respectively abut against opposite sides of the buckle.

[0061] In the bent elastic piece in the initial state, the second inclined arm, the third inclined arm and the second transverse arm are arranged substantially in a triangular shape. The ends of the second inclined arm and the third inclined arm far from the second transverse arm are arranged close to each other at intervals, and the width of the mouth of the card slot is small. When the buckle is just pushed into the card slot of the bent elastic piece, the buckle acts on the second inclined arm and the third inclined arm, causing the second inclined arm and the third inclined arm to open to both sides. The second inclined arm follows the movement of the first inclined arm, and the fourth inclined arm follows the movement of the third inclined arm, and the width of the mouth of the card slot is large. When the buckle is completely pushed into the card slot of the bent elastic piece, the buckle is limited by the second inclined arm and the third inclined arm, realizing the locking of the buckle and the bent elastic piece.

[0062] In an optional implementation manner, a cover portion is provided on the mounting seat and the cover portion has an avoidance area. The card slot of the bent elastic piece is arranged corresponding to the avoidance area of the cover portion. The first inclined arm and the second inclined arm are located on one side edge of the avoidance area, and the third inclined arm and the fourth inclined arm are located on the other side edge of the avoidance area. The first transverse arm and the third transverse arm are limited by the cover portion.

[0063] In an optional implementation manner, a fillet can be provided between the first inclined arm and the second inclined arm, and a fillet can be provided between the third inclined arm and the fourth inclined arm, facilitating the sliding contact between the head of the buckle and the fillet area, so that the head of the buckle and the card slot of the bent elastic piece are in snap-fit.

[0064] In an optional implementation manner, the bent elastic piece includes a sheet portion, a first cantilever and a second cantilever. The sheet portion is arranged on the mounting seat. One end of the first cantilever is connected to the sheet portion, and one end of the second cantilever is connected to the sheet portion. The first cantilever and the second cantilever are arranged at intervals, and a card slot is formed between the first cantilever and the second cantilever. When the snap-fastening component is in the locked state and the buckle is located between the first cantilever and the second cantilever, the first cantilever and the second cantilever respectively abut against the opposite sides of the buckle.

[0065] In the bent elastic piece in the initial state, a card slot with a larger bottom and a smaller top is formed between the first cantilever and the second cantilever. The free ends of the first cantilever and the second cantilever are arranged close to each other at intervals, and the width of the mouth of the card slot is small. When the buckle is just pushed into the card slot of the bent elastic piece, the buckle acts on the first cantilever and the second cantilever, causing the first cantilever and the second cantilever to open to both sides, and the width of the mouth of the card slot is large. When the buckle is completely pushed into the card slot of the bent elastic piece, the buckle is limited by the first cantilever and the second cantilever, realizing the locking of the buckle and the bent elastic piece.

[0066] In an optional implementation manner, for the bayonet structures of the above two forms of bent elastic pieces, the buckle includes a columnar portion and a head. The head is connected to one end of the columnar portion, and the other end of the columnar portion is connected to the fourth end of the second folding piece; in the width direction of the mouth of the card slot, the width of the head is greater than the width of the columnar portion, and the width of the head is greater than the first width. The buckle having a columnar portion and a head is easy to mold, and the buckle can be snap-fitted with the bent elastic piece.

[0067] In an alternative implementation, for the bayonet structures in the above two forms of bent elastic pieces, a fourth guiding surface is provided on the side of the head away from the columnar portion. During the process of the first folding member and the second folding member switching from the open state to the closed state, the fourth guiding surface is used for sliding contact with the bent elastic piece, so that the snap component switches from the separated state to the critical state.

[0068] During the process of pressing the snap component to push the snap into the bent elastic piece, the fourth guiding surface of the snap head slides in contact with the bent elastic piece, which can increase the width of the slot of the bent elastic piece, that is, the snap component switches from the separated state to the critical state, facilitating the user to push the snap into the bent elastic piece. The fourth guiding surface can be an arc surface.

[0069] In an alternative implementation, for the bayonet structures in the above two forms of bent elastic pieces, a fifth guiding surface is provided near the columnar portion of the head. During the process of the first folding member and the second folding member switching from the closed state to the open state, the fifth guiding surface is used for sliding contact with the bent elastic piece, so that the bayonet structure switches from the locked state to the critical state.

[0070] During the process of pulling the snap to disengage the snap from the bent elastic piece, the fifth guiding surface of the snap head slides in contact with the bent elastic piece, which can increase the width of the slot of the bent elastic piece, that is, the snap component switches from the locked state to the critical state, facilitating the user to disengage the snap from the bent elastic piece. The fifth guiding surface can be an arc surface.

[0071] In an alternative implementation, the fourth end of the second folding member has a positioning ring for the fixing belt to pass through; the middle part of the second folding member has a clamping portion for clamping and cooperating with the clamping hole of the fixing belt. The fixing belt is limited on the second folding member and the use length of the fixing belt is defined.

[0072] In an alternative implementation, the first part provided on the mounting base is a snap, and the second part provided at the fourth end of the second folding member is a bayonet structure, and the bayonet structure and the snap can be clamped and cooperated. The fourth end of the second folding member serves as a carrier of the bayonet structure, and a structure adapted to the bayonet structure can be provided. For example, an installation groove is provided at the fourth end of the second folding member, and the bayonet structure is provided at the installation groove.

[0073] In an alternative implementation, the bayonet structure can adopt an elastic telescopic manner to reduce the failure of the buckle and the bayonet structure due to force deformation. The bayonet structure may include a sliding fastener and an elastic member. The sliding fastener is movably mounted on the fourth end of the second folding member. One end of the elastic member is disposed opposite to the sliding fastener, and the other end of the elastic member is disposed opposite to the wall surface of the fourth end of the second folding member. The elastic member is used to make the sliding fastener elastically telescopic. When the elastic member is in the extended state, the sliding fastener is in the extended position, and the snap component is in the locked state or the separated state. When the elastic member is in the compressed state, the sliding fastener is in the retracted position, and the snap component is in the critical state.

[0074] During the contact and buckling process between the sliding fastener and the buckle, the sliding fastener can have a large sliding stroke under the action of the elastic member. Neither the sliding fastener nor the buckle is easily deformed and fails due to force, making the reliability and stability of the watch buckle relatively high.

[0075] In an alternative implementation, the sliding fastener includes a sliding portion and a first buckling portion. The sliding portion is slidably mounted on the fourth end of the second folding member. The sliding portion has opposite ends along its sliding direction. The first buckling portion is connected to one end of the sliding portion. The elastic member is disposed at the other end of the sliding portion. The buckle can be buckled to the first buckling portion. The sliding fastener and the elastic member cooperate with each other. During the contact and buckling process between the buckle and the sliding fastener, the elastic member can make the sliding fastener elastically telescopic, and neither the buckle nor the sliding fastener is easily deformed and fails due to force, so the reliability of the watch buckle is high.

[0076] In a second aspect, an embodiment of the present application provides a watch buckle, including: a first folding member, a second folding member, a mounting seat, and a connection assembly; the first folding member has opposite first and second ends, and the first end is fixed to the mounting seat. The second folding member has opposite third and fourth ends, and the second end and the third end are rotatably connected so that the first folding member and the second folding member can be closed or opened. The connection assembly is used to detachably connect the mounting seat and the fourth end. When the first folding member and the second folding member are closed, the mounting seat and the fourth end are connected. When the first folding member and the second folding member are opened, the mounting seat and the fourth end are separated.

[0077] In the watch buckle provided by the embodiment of the present application, one end of the first folding member is fixed to the mounting seat, the other end of the first folding member is rotatably connected to one end of the second folding member, and the other end of the second folding member is connected to the mounting seat through a connection assembly. The watch buckle can adjust the use length of the fixing strap to adapt to the user's wrist, and connect the first fixing strap and the second fixing strap to bind the wearable device to the user's wrist. When the wearable device is not in use, the watch buckle can be unlocked to loosen the first fixing strap and the second fixing strap to realize the detachment of the wearable device.

[0078] In an alternative implementation, the connecting component is a magnetic component, which includes a first magnetic part disposed on the mounting base and a second magnetic part disposed on the fourth end. The first magnetic part and the second magnetic part can be magnetically attracted to each other. One of the first magnetic part and the second magnetic part is a magnet, and the other is a magnetic conductive part. When the first folding part and the second folding part are closed, the first magnetic part and the second magnetic part are magnetically engaged. When the first folding part and the second folding part are opened, the first magnetic part and the second magnetic part are separated from each other.

[0079] In a third aspect, the present application provides a fixing band, and a receiving groove for receiving a part of the watch buckle is provided on the fixing band.

[0080] In an alternative implementation, the fixing band may include a first fixing band and a second fixing band. The first end of the first fixing band is used to connect to the watch buckle, and the second end of the first fixing band is used to connect to the device body. The first fixing band and the second fixing band are detachably connected through the watch buckle. A receiving groove may be provided near the first end of the first fixing band, and the receiving groove is used to receive at least a part of the watch buckle.

[0081] In an alternative implementation, the receiving groove may be a groove provided on the inner side of the first fixing band for receiving a folding part (such as the first folding part and the second folding part), so that the folding part can be recessed into the groove of the receiving groove. When the user wears it, the folding plate / folding part can be received inside the first fixing band, reducing the thickness at the overlapping part of the folding part and the watch band, improving the wearing comfort, and appearing thinner and more beautiful in appearance.

[0082] In an alternative implementation, the inner wall corners of the receiving groove are provided with rounded corners.

[0083] In an alternative implementation, the receiving groove extends from the first end of the first fixing band to the middle of the first fixing band.

[0084] In an alternative implementation, the receiving groove extends from the first end of the first fixing band to the second end of the first fixing band.

[0085] In an alternative implementation, the inner side of the second fixing band is used to mount an airbag. The second fixing band has fixing nail holes and sliding nail holes, and the fixing nail holes and the sliding nail holes are spaced apart along the extending direction of the second fixing band. The fixing nail holes are used for snap-fitting with the first protruding nails of the airbag, and the sliding nail holes are used for sliding cooperation with the second protruding nails of the airbag.

[0086] Fourthly, an embodiment of the present application provides a watch band, which includes a first fixing band, a second fixing band, and the above-mentioned watch buckle. One end of the first fixing band (i.e., the first end of the first fixing band) is rotatably connected to the mounting seat. The second fixing band is detachably mounted on the second folding member. When the second fixing band is mounted on the second folding member and the first folding member and the second folding member are closed, the first folding member and the second folding member can be located inside the first fixing band, or the first folding member and the second folding member can be located inside the second fixing band. The receiving groove is used to receive at least part of the first folding member and the second folding member.

[0087] For the watch band provided by the embodiment of the present application, the detachable connection between the first fixing band and the second fixing band can be realized through the watch buckle. The mounting seat of the watch buckle is connected to one end of the first fixing band. When the second fixing band is mounted on the second folding member, the first folding member and the second folding member are kept closed by the snap component, and the first folding member and the second folding member are located inside the first fixing band or the second fixing band, so that the first fixing band and the second fixing band are connected and the use length of the fixing band is defined. When the second fixing band is detached from the second folding member, the first fixing band and the second fixing band are separated.

[0088] In an optional implementation manner, a spring bar can be provided between one end of the first fixing band and the mounting seat, so that the mounting seat is rotatably connected to the first fixing band. The mounting seat has a connecting ear, which is convenient for the spring bar to pass through the first fixing band, and the end of the spring bar is connected to the connecting ear, so as to realize the rotational connection of the mounting seat on the first fixing band.

[0089] In an optional implementation manner, the fourth end of the second folding member has a positioning ring, the middle part of the second folding member has a clamping part, the second fixing band has a plurality of clamping holes arranged along the extending direction of the second fixing band, the free end of the second fixing band can pass through the positioning ring, and the clamping part can be clamped in one of the clamping holes. The middle part of the second fixing band is limited on the second folding member, and the use length of the fixing band is defined.

[0090] In an optional implementation manner, the first fixing band has a plurality of clamping holes arranged along the extending direction of the first fixing band, and the second fixing band has a plurality of clamping holes arranged along the extending direction of the second fixing band. The breathable effect can be achieved through the plurality of clamping holes, and the use experience of the wearable device can be improved.

[0091] In an optional implementation manner, the mounting seat of the watch buckle is connected to one end of the first fixing band, and the first folding member and the second folding member of the watch buckle are located inside the mounting seat. When the first fixing band and the second fixing band are connected through the watch buckle, the first folding member and the second folding member are closed and located inside the first fixing band, and the free end of the second fixing band is located inside the first fixing band. This solution has a simple structure, and there is no need to provide a limiting ring on the first watch band and make the free end of the second fixing band pass through the limiting ring.

[0092] In an alternative implementation, the mounting seat of the watch buckle is connected to one end of the first fixing strap, and the first folding piece and the second folding piece of the watch buckle are located outside the mounting seat. When the first fixing strap and the second fixing strap are connected by the watch buckle, the first folding piece and the second folding piece are closed and located inside the second fixing strap, and the free end of the second fixing strap is located outside the first fixing strap. A limiting ring can be provided on the first watch strap to allow the free end of the second fixing strap to pass through the limiting ring, preventing the free end of the second fixing strap from being too long and causing a poor user experience.

[0093] In a fifth aspect, an embodiment of the present application provides a wearable device, including a device body and the above-mentioned watch strap. One end of the first fixing strap away from the mounting seat (i.e., the second end of the first fixing strap) is connected to the device body, and one end of the second fixing strap (i.e., the third end of the second fixing strap) is connected to the device body.

[0094] For the wearable device provided by the embodiment of the present application, when using the wearable device, the use length of the fixing strap can be adjusted through the watch buckle to adapt to the user's wrist, and the first fixing strap and the second fixing strap are connected to bind the wearable device to the user's wrist. When the wearable device is not in use, the watch buckle can be unlocked to loosen the first fixing strap and the second fixing strap, realizing the detachment of the wearable device.

[0095] In an alternative implementation, it further includes a detection module for detecting the user's physiological indicators, and the detection module can be provided on the device body or the watch strap. The detection module can be a blood pressure detection module, a photoplethysmography sensor, an electrocardiogram sensor, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0096] Figure 1 is a schematic structural diagram of the wearable device provided by the embodiment of the present application;

[0097] Figure 2 is Figure 1 a schematic structural diagram of the wearable device when the first watch strap and the second watch strap are not connected;

[0098] Figure 3 is Figure 1 a schematic structural diagram of the wearable device when the first watch strap and the second watch strap are connected;

[0099] Figure 4 is a schematic structural diagram of the wearable device provided by another embodiment of the present application when the first watch strap and the second watch strap are not connected;

[0100] Figure 5 is Figure 4 a schematic structural diagram of the wearable device when the first watch strap and the second watch strap are connected;

[0101] Figure 6 is an exploded view of the watch buckle provided by the embodiment of the present application;

[0102] Figure 7 Another perspective exploded view of the watch buckle for Figure 6 ;

[0103] Figure 8 Assembly drawing of the mounting base and bayonet structure in the watch buckle for Figure 6 ;

[0104] Fig. 9 Assembly drawing of installing the first folding member on the mounting base for Figure 8 ;

[0105] Fig.10 Assembly drawing of the watch buckle for Figure 6 when the first folding member and the second folding member are closed;

[0106] Fig.11 Another perspective assembly drawing of the watch buckle for Fig.10 ;

[0107] Fig.12 Schematic structural diagram of the watch buckle for Fig.10 when the first folding member and the second folding member are opened;

[0108] Fig.13 Assembly drawing of the watch buckle provided by another embodiment of the present application when the first folding member and the second folding member are closed;

[0109] Fig.14 Assembly drawing of the watch buckle provided by another embodiment of the present application when the first folding member and the second folding member are closed;

[0110] Fig.15 Cross-sectional view of the watch buckle for Fig.11 along the A-A line, with the first folding member and the second folding member closed and the snap component in the locked state;

[0111] Fig.16 Cross-sectional view of the watch buckle for Fig.12 along the B-B line, with the first folding member and the second folding member opened and the snap component in the locked state;

[0112] Fig.17 Cross-sectional view of the watch buckle for Fig.11 when the snap component is in the critical state;

[0113] Fig.18 Exploded view of the watch buckle provided by another embodiment of the present application;

[0114] Fig.19 Assembly drawing of the mounting base and bayonet structure in the watch buckle for Fig.18 ;

[0115] Fig. 20 Assembly drawing of installing the first folding member on the mounting base for Fig.19Assembly drawing of the first folding member mounted on the mounting base;

[0116] Fig.21 For Fig.18 Assembly drawing of the watch buckle when the first folding member and the second folding member are closed;

[0117] Fig. 22 For Fig.21 Another perspective assembly drawing of the watch buckle;

[0118] Fig.23 For Fig.21 Schematic structural drawing of the watch buckle when the first folding member and the second folding member are open;

[0119] Fig.24 For Fig. 22 Partial cross-sectional view of the watch buckle along line C-C, the first folding member and the second folding member are closed, and the snap component is in the locked state;

[0120] Fig.25 For Fig.23 Partial cross-sectional view of the watch buckle along line D-D, the first folding member and the second folding member are open, and the snap component is in the locked state;

[0121] Fig.26 For Fig. 22 Partial cross-sectional view of the watch buckle when the snap component is in the critical state;

[0122] Fig. 27 Exploded view of the watch buckle provided by another embodiment of the present application;

[0123] Fig.28 In (a) to (d) of Fig. 27 Bending spring pieces in the snap component of the watch buckle, the snap component is in the locked state, the snap component is in the separated state, and the schematic structural drawing of the snap component in the critical state;

[0124] Fig.29 For Fig. 27 Assembly drawing of the mounting base and the bending spring piece in the watch buckle;

[0125] Fig.30 For mounting the first folding member on the mounting base in Fig.29 Assembly drawing;

[0126] Fig.31 For Fig. 27 Assembly drawing of the watch buckle when the first folding member and the second folding member are closed;

[0127] Fig.32 For Fig.31 Another perspective assembly drawing of the watch buckle;

[0128] Fig.33 For Fig.31 Schematic structural diagram of the watch buckle when the first folding piece and the second folding piece are opened;

[0129] Fig.34 is Fig.32 Cross-sectional view of the watch buckle along the E-E line, the first folding piece and the second folding piece are closed, and the snap component is in the locked state;

[0130] Fig.35 Exploded view of the watch buckle provided by another embodiment of the present application;

[0131] Fig.36 In (a) to (d) are respectively Fig.35 Bent elastic piece in the snap component of the watch buckle, the snap component is in the locked state, the snap component is in the separated state, and the schematic structural diagram of the snap component in the critical state;

[0132] Fig.37 is Fig.35 Assembly drawing of the mounting seat and the bent elastic piece in the watch buckle;

[0133] Fig.38 is for Fig.37 Assembly drawing of installing the first folding piece on the mounting seat;

[0134] Fig.39 is Fig.35 Assembly drawing of the watch buckle when the first folding piece and the second folding piece are closed;

[0135] Fig.40 is Fig.39 Another perspective assembly drawing of the watch buckle;

[0136] Fig.41 is Fig.39 Schematic structural diagram of the watch buckle when the first folding piece and the second folding piece are opened;

[0137] Fig.42 is Fig.40 Cross-sectional view of the watch buckle along the F-F line, the first folding piece and the second folding piece are closed, and the snap component is in the locked state;

[0138] Figure 43-Figure 46 Schematic diagram of the watch band structure;

[0139] Figure 47-Figure 48 Schematic diagram of the first fixing band structure;

[0140] Figure 49-Figure 50 Partial cross-sectional view of the first fixing band;

[0141] Figure 51-Figure 52 Partial cross-sectional view of the first fixing band;

[0142] Figure 53-Figure 54Schematic diagram of the structure of the first fixing band and the buckle in the watch band;

[0143] Figure 55-Figure 56 Schematic diagram of a wearable device.

[0144] Explanation of reference numerals:

[0145] 100 - Buckle;

[0146] 110 - First folding member; 110a - First end of the first folding member; 110b - Second end of the first folding member; 111 - First arc-shaped plate; 112 - Pin shaft; 112a - Axial direction of the pin shaft; 113 - Cover part; 1131 - Avoidance area; 1132 - Outer convex structure;

[0147] 120 - Second folding member; 120a - Third end of the second folding member; 120b - Fourth end of the second folding member; 121 - Buckle; 121a - First guiding surface; 121b - Second guiding surface; 121c - Third guiding surface; 121d - Fourth guiding surface; 121e - Fifth guiding surface; 1211 - Columnar part; 1211a - Width of the columnar part; 1212 - Head; 1212a - Width of the head; 122 - Second arc-shaped plate; 123 - Positioning ring; 124 - Clamping part;

[0148] 130 - Mounting seat; 130a - Length direction of the mounting seat; 131 - Mounting groove; 132 - Notch; 133 - First stop wall; 134 - Opening; 135 - Partition wall; 136 - Mounting hole; 137 - Second stop wall; 138 - Connecting ear; 139 - Concave structure;

[0149] 140 - Snap component; 140a - First part; 140b - Second part; 140c - Bayonet structure; 141 - Slide fastener; 141a - Moving direction of the slide fastener; 1411 - Sliding part; 1412 - First fastening part; 1413 - First limiting part; 1414 - Button part; 1415 - Accommodating groove; 1416 - Second fastening part; 1417 - Second limiting part; 142 - Elastic member; 143 - Bent elastic piece; 1431 - Card slot; 1432 - Mouth part; 1432a - First width; 1432b - Second width; 143a - First transverse arm; 143b - First inclined arm; 143c - Second inclined arm; 143d - Second transverse arm; 143e - Third inclined arm; 143f - Fourth inclined arm; 143g - Third transverse arm; 143h - Flaky part; 143i - First cantilever; 143j - Second cantilever;

[0150] 200 - First fixing band; 200a - Limiting ring; 200b - First end of the first fixing band; 200c - Second end of the first fixing band; 201 - Clamping hole;

[0151] 300 - Second fixing strap; 300a - Free end; 300b - Third end of the second fixing strap; 301 - Latching hole; 302 - Fixing nail hole; 303 - Sliding nail hole;

[0152] 400 - Watch band; 500 - Device main body; 600 - Accommodating groove; 601 - Inner wall; 602 - Rounded corner; 700 - Airbag; 701 - First protruding nail; 702 - Second protruding nail; 1000 - Wearable device. Detailed implementation manner

[0153] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application clearer and more understandable, the present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application. Although the description of the present application will be introduced in conjunction with some embodiments, this does not mean that the features of this application are limited to this implementation. On the contrary, the purpose of introducing the implementation as an application is to cover other alternatives or modifications that may be extended based on the claims of the present application. In order to provide a deep understanding of the present application, many specific details will be included in the following description. The present application can also be implemented without using these details. In addition, in order to avoid confusing or obscuring the key points of the present application, some specific details will be omitted in the description. It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0154] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0155] It should be understood that in the description of the embodiments of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. The orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present application.

[0156] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of this application, "a plurality of" means two or more unless otherwise specifically defined.

[0157] In the embodiments of this application, "and / or" is merely an associative relationship describing associated objects, indicating that three relationships may exist. For example, A and / or B may represent three cases: A exists alone, A and B exist simultaneously, and B exists alone. Additionally, the character " / " in this text generally represents an "or" relationship between the associated objects before and after.

[0158] Reference to "one embodiment" or "some embodiments" etc. described in this specification means that specific features, structures, or characteristics described in conjunction with that embodiment are included in one or more embodiments of this application. Thus, statements such as "in one embodiment", "in some embodiments", "in other some embodiments", "in still other embodiments", etc. that appear in different places in this specification do not necessarily all refer to the same embodiment, but rather mean "one or more but not all embodiments", unless otherwise specifically emphasized in another way. The terms "comprise", "include", "have" and their variants all mean "include but not limited to", unless otherwise specifically emphasized in another way.

[0159] In related art wearable devices, a fixing strap is connected to each end of the device body, and the two fixing straps can be connected and detached through a watch buckle. The watch buckle may include two folding members, and the two folding members are rotatably connected so that the two folding members can be closed or opened, and the two folding members are clamped through a first fastener and a second fastener. A first fastener is provided on one of the folding members, and a second fastener is provided on the other folding member. The first fastener and the second fastener belong to a hard interference structure, and when the first fastener and the second fastener are buckled and assembled, the elastic deformation amounts of both are relatively small. During the production process, it is difficult to adjust the fasteners, and the production cost is relatively high. During use, the first fastener and the second fastener are prone to deformation and failure and are difficult to repair.

[0160] Referring to Figures 1 to 5 , an embodiment of this application provides a wearable device 1000, including a device body 500 and a watch band 400. The watch band 400 includes a first fixing strap 200, a second fixing strap 300, and a watch buckle 100. One end of the first fixing strap 200 is connected to the device body 500, one end of the second fixing strap 300 is connected to the device body 500, and the watch buckle 100 is provided on the first fixing strap 200. The watch buckle 100 is used for detachably connecting the first fixing strap 200 and the second fixing strap 300.

[0161] Among them, the wearable device 1000 can be a watch, a bracelet, etc. When the wearable device 1000 is a watch, the device main body 500 is a watch face, and the first fixing band 200 and the second fixing band 300 are respectively connected to the opposite ends of the watch face. The watch face may include a housing and a display screen provided on the housing.

[0162] When using the wearable device 1000, the use length of the fixing band can be adjusted through the watch buckle 100 to adapt to the user's wrist, and the first fixing band 200 and the second fixing band 300 are connected to bind the wearable device 1000 to the user's wrist. When not using the wearable device 1000, the watch buckle 100 can be unlocked to loosen the first fixing band 200 and the second fixing band 300, realizing the detachment of the wearable device 1000.

[0163] In some embodiments, it further includes a detection module for detecting the user's physiological indicators, and the detection module can be provided on the device main body 500 or the watch band 400. The detection module can be a blood pressure detection module, a photoplethysmography (PPG) sensor, an electrocardiogram (ECG) sensor, etc.

[0164] The blood pressure detection module may include an airbag and a pressure sensor. When in use, the airbag is provided outside the wrist. The airbag is gradually inflated. When the internal pressure of the airbag reaches the threshold value, the airbag will block the blood flow in the wrist artery. Then the airbag gradually deflates, and the pressure sensor continuously detects the internal pressure of the airbag. The blood pressure can be obtained from the obtained pressure signal. The airbag in the blood pressure detection module can be provided on the inner side of the watch band 400. When the wearable device 1000 is bound to the user's wrist, the airbag is located outside the wrist.

[0165] A photoplethysmography (PPG) sensor uses a photoelectric sensor to detect the intensity of the reflected light after being absorbed by human blood and tissues, and depicts the change in blood vessel volume during the cardiac cycle. The heart rate and blood oxygen can be obtained from the obtained pulse waveform. The photoplethysmography sensor can be provided on the back of the device main body 500.

[0166] An electrocardiogram (ECG) sensor uses electrodes in contact with the human skin to record the timing and intensity of the electrical signals that cause the heart to beat. The electrocardiogram sensor can be provided on the back of the device main body 500.

[0167] Refer to Figures 6 to 10, an embodiment of the present application provides a watch buckle 100, including: a first folding member 110, a second folding member 120, a mounting base 130, and a connection assembly; the first folding member 110 has opposite first and second ends 110a and 110b, and the first end 110a is fixed to the mounting base 130. The second folding member 120 has opposite third and fourth ends 120a and 120b, and the second end 110b and the third end 120a are rotatably connected so that the first folding member 110 and the second folding member 120 can be closed or opened. The connection assembly is used to detachably connect the mounting base 130 and the fourth end 120b. In combination with Fig.11 , when the first folding member 110 and the second folding member 120 are closed, the mounting base 130 and the fourth end 120b are connected. In combination with Fig.12 , when the first folding member 110 and the second folding member 120 are opened, the mounting base 130 and the fourth end 120b are separated.

[0168] When setting the connection assembly, the connection assembly can be a magnetic attraction assembly, a snap button assembly 140, etc. Exemplarily, the connection assembly is a magnetic attraction assembly, and the magnetic attraction assembly includes a first magnetic member provided on the mounting base 130 and a second magnetic member provided on the fourth end 120b. The first magnetic member and the second magnetic member can be magnetically attracted. One of the first magnetic member and the second magnetic member is a magnet, and the other is a magnetic conductive member (such as stainless steel, silicon steel). When the first folding member 110 and the second folding member 120 are closed, the first magnetic member and the second magnetic member are magnetically attracted and matched. When the first folding member 110 and the second folding member 120 are opened, the first magnetic member and the second magnetic member are separated.

[0169] Refer to Figures 6 to 10 , an embodiment of the present application provides a watch buckle 100, including: a first folding member 110, a second folding member 120, a mounting base 130, and a snap button assembly 140. The first folding member 110 has opposite first and second ends 110a and 110b, and the first end 110a is fixed to the mounting base 130. The second folding member 120 has opposite third and fourth ends 120a and 120b, and the second end 110b and the third end 120a are rotatably connected so that the first folding member 110 and the second folding member 120 can be closed or opened. The snap button assembly 140 includes a first part 140a provided on the mounting base 130 and a second part 140b provided on the fourth end 120b. In combination with Fig.10 、 Fig.11 , when the first folding member 110 and the second folding member 120 are closed, the first part 140a and the second part 140b of the snap button assembly 140 are locked. In combination with Fig.12 , when the first folding member 110 and the second folding member 120 are opened, the first part 140a and the second part 140b of the snap button assembly 140 are separated.

[0170] The second end 110b of the first folding member 110 and the third end 120a of the second folding member 120 are rotatably connected, and the first folding member 110 and the second folding member 120 form a butterfly buckle, and the first folding member 110 and the second folding member 120 can be closed or opened. The first folding member 110 and the second folding member 120 are closed, which means that the two are close to each other, and the angle between the two can be 0° or close to 0°. The first folding member 110 and the second folding member 120 are opened, which means that the two are open to each other, and a certain angle is formed between them.

[0171] The first part 140a and the second part 140b of the snap assembly 140 can be locked or separated. When the first part 140a and the second part 140b are locked, the first folding member 110 and the second folding member 120 remain closed and cannot rotate. When the first part 140a and the second part 140b are separated, the first folding member 110 and the second folding member 120 can rotate relative to each other to change the angle between them.

[0172] In the clasp 100 provided in the embodiment of the present application, one end of the first folding member 110 is fixed on the mounting seat 130, the other end of the first folding member 110 is rotatably connected to one end of the second folding member 120, and the other end of the second folding member 120 is connected to the mounting seat 130 via a snap assembly 140. The first part 140a and the second part 140b in the snap assembly 140 can be locked or separated, so that the first folding member 110 and the second folding member 120 can remain closed or open. Compared with the hard interference structure of the first fastener and the second fastener used in the related art, the snap assembly 140 of this embodiment has a certain elasticity. During the production and use process, one of the first part 140a and the second part 140b has a large elastic stroke or elastic deformation amount, and the first part 140a and the second part 140b are not easy to deform and fail, which can improve the reliability and stability of the clasp 100.

[0173] See also Figures 1 to 5 The embodiment of the present application provides a watch strap 400, which includes a first fixing strap 200, a second fixing strap 300 and a buckle 100. One end of the first fixing strap 200 (i.e., the first end 200b of the first fixing strap 200) is rotatably connected to the mounting seat 130. The second fixing strap 300 is detachably mounted on the second folding member 120. When the second fixing strap 300 is mounted on the second folding member 120 and the first folding member 110 and the second folding member 120 are closed, the first folding member 110 and the second folding member 120 can be located on the inner side of the first fixing strap 200 (e.g., the inner side of the first folding member 110 and the inner side of the second folding member 120). Figure 3 Alternatively, the first folding member 110 and the second folding member 120 may be located on the inner side of the second fixing belt 300 (as shown in FIG. Figure 5 shown).

[0174] The inner side of the first fixing band 200 is the side facing the wrist on the first fixing band 200 when the wearable device 1000 is worn. The inner side of the second fixing band 300 is the side facing the wrist on the second fixing band 300 when the wearable device 1000 is worn.

[0175] Wherein, a spring bar can be arranged between one end of the first fixing band 200 and the mounting seat 130, so that the mounting seat 130 is rotatably connected to the first fixing band 200. The mounting seat 130 has a connecting lug 138, which is convenient for the spring bar to pass through the first fixing band 200, and the end of the spring bar is connected to the connecting lug 138, realizing the rotational connection of the mounting seat 130 to the first fixing band 200.

[0176] The watch band 400 provided by the embodiment of the present application can realize the detachable connection between the first fixing band 200 and the second fixing band 300 through the watch buckle 100. The mounting seat 130 of the watch buckle 100 is connected to one end of the first fixing band 200. When the second fixing band 300 is installed on the second folding member 120, the first folding member 110 and the second folding member 120 are kept closed by the snap component 140. The first folding member 110 and the second folding member 120 are located inside the first fixing band 200 or inside the second fixing band 300, so that the first fixing band 200 and the second fixing band 300 are connected and the use length of the fixing band is limited. When the second fixing band 300 is detached from the second folding member 120, the first fixing band 200 and the second fixing band 300 are separated.

[0177] When the above-mentioned watch band 400 is applied to the wearable device 1000, one end of the first fixing band 200 far from the mounting seat 130 (i.e., the second end 200c of the first fixing band 200) is connected to the device main body 500, and one end of the second fixing band 300 (i.e., the third end 300b of the second fixing band 300) is connected to the device main body 500. The first fixing band 200 and the second fixing band 300 are connected through the watch buckle 100, so that the first fixing band 200 and the second fixing band 300 are bound to the user's wrist, realizing the wearing of the wearable device 1000.

[0178] In order to limit the middle part of the second fixing band 300 on the second folding member 120 and limit the use length of the fixing band, in some embodiments, refer to Figure 1 、 Figure 6 、 Figure 7 、 Fig.10 , the fourth end 120b of the second folding member 120 has a positioning ring 123 for the fixing band to pass through; the middle part of the second folding member 120 has a clamping part 124 for clamping and cooperating with the clamping hole 301 of the fixing band.

[0179] Among them, the second fixing band 300 has a plurality of clamping holes 301 arranged along the extending direction of the second fixing band 300. The free end 300a of the second fixing band 300 can pass through the positioning ring 123, and the clamping portion 124 can be clamped in one of the clamping holes 301.

[0180] When using the wearable device 1000, the first folding member 110 and the second folding member 120 are opened. First, the free end 300a of the second fixing band 300 is passed through the positioning ring 123 of the second folding member 120, so that the middle part of the second fixing band 300 is limited on the second folding member 120 in the thickness direction thereof, and the second fixing band 300 can move back and forth relative to the positioning ring 123. Then, the clamping portion 124 is clamped with one of the clamping holes 301 of the second fixing band 300, limiting the use length of the fixing band to match the size of the user's wrist. Finally, the snap component 140 is locked to keep the first folding member 110 and the second folding member 120 closed, realizing the connection between the first fixing band 200 and the second fixing band 300, and binding the wearable device 1000 to the user's wrist through the first fixing band 200 and the second fixing band 300.

[0181] When the wearable device 1000 is to be removed from the user's hand, first disassemble the snap component 140 to switch the first folding member 110 and the second folding member 120 from the closed state to the open state, and then the wearable device 1000 can be detached from the user's hand. When the first fixing band 200 and the second fixing band 300 are to be separated, the clamping portion 124 is separated from the clamping hole 301 of the second fixing band 300, and then the second fixing band 300 is detached from the positioning ring 123, realizing the separation between the first fixing band 200 and the second fixing band 300.

[0182] In order to improve the air permeability effect of the fixing band and achieve a consistent appearance of the two fixing bands, in some embodiments, refer to Figure 1 , the first fixing band 200 has a plurality of clamping holes 201 arranged along the extending direction of the first fixing band 200, and the second fixing band 300 has a plurality of clamping holes 301 arranged along the extending direction of the second fixing band 300. The air permeability effect can be achieved through the plurality of clamping holes, improving the use experience of the wearable device 1000. The two fixing bands have similar clamping holes, making the two fixing bands have a similar appearance.

[0183] When setting the first fixing band 200, the second fixing band 300 and the watch buckle 100, there are various optional implementation manners. Two implementation manners are exemplarily given below.

[0184] The first implementation manner of the first fixing band 200, the second fixing band 300 and the watch buckle 100: Refer to Figure 1 , Figure 2, the mounting base 130 of the watch buckle 100 is connected to one end of the first fixing band 200, and the first folding member 110 and the second folding member 120 of the watch buckle 100 are located inside the mounting base 130. The inner side of the mounting base 130 is the side facing the wrist on the mounting base 130 when wearing the wearable device 1000. Combining Figure 3 , when the first fixing band 200 and the second fixing band 300 are connected by the watch buckle 100, the first folding member 110 and the second folding member 120 are closed and located inside the first fixing band 200, and the free end 300a of the second fixing band 300 is located inside the first fixing band 200. This solution has a simple structure, without the need to set a limiting ring on the first watch band 400 and allowing the free end 300a of the second fixing band 300 to pass through the limiting ring.

[0185] The second implementation manner of the first fixing band 200, the second fixing band 300 and the watch buckle 100: Refer to Figure 4 , the mounting base 130 of the watch buckle 100 is connected to one end of the first fixing band 200, and the first folding member 110 and the second folding member 120 of the watch buckle 100 are located outside the mounting base 130. The outer side of the mounting base 130 is the side of the mounting base 130 facing away from the wrist when wearing the wearable device 1000. Combining Figure 5 , when the first fixing band 200 and the second fixing band 300 are connected by the watch buckle 100, the first folding member 110 and the second folding member 120 are closed and located inside the second fixing band 300, and the free end 300a of the second fixing band 300 is located outside the first fixing band 200. A limiting ring 200a can be set on the first watch band 400 to allow the free end 300a of the second fixing band 300 to pass through the limiting ring 200a, avoiding the problem that the free end 300a of the second fixing band 300 is too long and causing a poor user experience.

[0186] In order to make the first folding member 110 and the second folding member 120 thin and not easily deformed, in some embodiments, refer to Figure 6 、 Figure 7 , the first folding member 110 includes a first arc-shaped plate 111, and the second folding member 120 includes a second arc-shaped plate 122; the opposite ends of the first arc-shaped plate 111 are respectively a first end 110a and a second end 110b, and the opposite ends of the second arc-shaped plate 122 are respectively a third end 120a and a fourth end 120b. Combining Fig.10 、 Fig.11 , the second end 110b and the third end 120a are rotatably connected by a pin shaft 112. When the first folding member 110 and the second folding member 120 are closed, the first arc-shaped plate 111 and the second arc-shaped plate 122 are arranged along the direction of the pin shaft 112, and the extending directions of the first arc-shaped plate 111 and the second arc-shaped plate 122 are the same.

[0187] The first folding member 110 and the second folding member 120 are respectively set as the first arc-shaped plate 111 and the second arc-shaped plate 122, and combined Figure 3 , so that the closed first folding member 110 and the second folding member 120 form an arc-shaped structure and are held between the first fixing belt 200 and the second fixing belt 300, with less influence on the bending shapes of the first fixing belt 200 and the second fixing belt 300 and better appearance effect.

[0188] The first arc-shaped plate 111 and the second arc-shaped plate 122 are arranged along the direction of the pin shaft 112 (i.e., the axial direction 112a of the pin shaft 112). The extending directions of the first arc-shaped plate 111 and the second arc-shaped plate 122 are the same. With the same total thickness, the thicknesses of the first arc-shaped plate 111 and the second arc-shaped plate 122 can be made larger, increasing their rigidity and not being easily deformed by force, and improving the user experience of the opening and closing operations of the first folding member 110 and the second folding member 120.

[0189] The first arc-shaped plate 111 and the second arc-shaped plate 122 are rotatably connected through the pin shaft 112. It can be that connection holes are respectively provided at the ends of the first arc-shaped plate 111 and the second arc-shaped plate 122, and the pin shaft 112 is connected to the connection holes of both, so that both the first arc-shaped plate 111 and the second arc-shaped plate 122 can rotate around the pin shaft 112.

[0190] When configuring the first arc-shaped plate 111 and the second arc-shaped plate 122, there are multiple optional implementation methods. Two implementation methods are exemplarily given below.

[0191] The first implementation method of the first arc-shaped plate 111 and the second arc-shaped plate 122: Refer to Figure 6 、 Fig.10 , there are multiple first arc-shaped plates 111, and the multiple first arc-shaped plates 111 are arranged at intervals along the direction of the pin shaft 112 (i.e., the axial direction 112a of the pin shaft 112). When the first folding member 110 and the second folding member 120 are closed, at least one second arc-shaped plate 122 is located between the multiple first arc-shaped plates 111.

[0192] The multiple first arc-shaped plates 111 are arranged at intervals, and at least one second arc-shaped plate 122 is arranged between the multiple first arc-shaped plates 111, making the rotational connection between the first arc-shaped plate 111 and the second arc-shaped plate 122 stable and reliable. One or more second arc-shaped plates 122 can be arranged between two adjacent first arc-shaped plates 111.

[0193] Exemplarily, refer to Figure 6 、 Fig.10, the two first arc-shaped plates 111 are arranged at intervals along the direction of the pin shaft 112, and one second arc-shaped plate 122 is arranged between the two first arc-shaped plates 111. The rotational connection between the first arc-shaped plate 111 and the second arc-shaped plate 122 is stable and reliable. When the first arc-shaped plate 111 and the second arc-shaped plate 122 are closed, the two first arc-shaped plates 111 and the second arc-shaped plate 122 form an arc-shaped structure, which is simple in structure and has a good appearance. The position of the snap component 140 can be set corresponding to the fourth end 120b of the second arc-shaped plate 122, or can also be set corresponding to the first end 110a of the first arc-shaped plate 111.

[0194] Exemplarily, refer to Fig.13 , a total of two first arc-shaped plates 111 and two second arc-shaped plates 122 are configured, and the first arc-shaped plates 111 and the second arc-shaped plates 122 are arranged alternately in sequence along the direction of the pin shaft 112. The rotational connection between the first arc-shaped plate 111 and the second arc-shaped plate 122 is stable and reliable. When the first arc-shaped plate 111 and the second arc-shaped plate 122 are closed, the two first arc-shaped plates 111 and the second arc-shaped plate 122 form an arc-shaped structure, which is simple in structure and has a good appearance. The position of the snap component 140 can be set corresponding to the fourth end 120b of one of the second arc-shaped plates 122, or can also be set corresponding to the first end 110a of the first arc-shaped plate 111.

[0195] When multiple snap components 140 are provided, one snap component 140 can be set corresponding to the fourth end 120b of the second arc-shaped plate 122 near the middle position, and the other snap component 140 can be set corresponding to the first end 110a of the first arc-shaped plate 111 near the middle position. The multiple snap components 140 can make the connection between the second folding member 120 and the mounting seat 130 stable and reliable.

[0196] The second implementation manner of the first arc-shaped plate 111 and the second arc-shaped plate 122: Refer to Fig.14 , one first arc-shaped plate 111 and one second arc-shaped plate 122 are arranged along the direction of the pin shaft 112 (i.e., the axial direction 112a of the pin shaft 112). The rotational connection between the first arc-shaped plate 111 and the second arc-shaped plate 122 is stable and reliable. When the first arc-shaped plate 111 and the second arc-shaped plate 122 are closed, the first arc-shaped plate 111 and the second arc-shaped plate 122 form an arc-shaped structure, which is simple in structure and has a good appearance. The position of the snap component 140 can be set corresponding to the fourth end 120b of the second arc-shaped plate 122, or can also be set corresponding to the first end 110a of the first arc-shaped plate 111.

[0197] When setting the snap component 140, there are various optional implementation manners. The first implementation manner of the snap component 140 is: Refer to Figure 6 、 Figure 7, the first part 140a is a bayonet structure 140c, and the second part 140b is a buckle 121. The bayonet structure 140c and the buckle 121 can be snap-fitted. The bayonet structure 140c has a relatively large elastic travel or elastic deformation amount. The implementation manner of the second snap-fastener assembly 140 is that the first part 140a is a buckle 121, the second part 140b is a bayonet structure 140c, and the bayonet structure 140c and the buckle 121 can be snap-fitted. The bayonet structure 140c has a relatively large elastic travel or elastic deformation amount. Hereinafter, the first snap-fastener assembly 140 will be mainly taken as an example for specific description.

[0198] In order to facilitate the fixation of the first end 110a of the first folding member 110 to the mounting seat 130, in some embodiments, refer to Figures 6 to 9 , Fig.15 , the first end 110a of the first folding member 110 has a cover portion 113. The cover portion 113 is fixed to the mounting seat 130. The cover portion 113 and the mounting seat 130 enclose a mounting groove 131. The bayonet structure 140c is provided at the mounting groove 131. The cover portion 113 has an avoidance area 1131 for partially exposing the bayonet structure 140c.

[0199] The first end 110a of the first folding member 110 has a cover portion 113. The bayonet structure 140c is disposed in the mounting groove 131 formed by the mounting seat 130 and the cover portion 113, which is convenient for the bayonet structure 140c to be disposed on the mounting seat 130. The mounting seat 130 and the cover portion 113 can provide protection for the bayonet structure 140c. The cover portion 113 is fixed to the mounting seat 130, so that the first end 110a of the first folding member 110 is fixed to the mounting seat 130. The bayonet structure 140c is partially exposed through the avoidance area 1131 of the cover portion 113, which is convenient for the buckle 121 and the bayonet structure 140c to be snap-fitted. The avoidance area 1131 can be a groove or a hole.

[0200] Among them, the mounting groove 131 can be formed on the mounting seat 130, and the cover portion 113 covers the notch 132 of the mounting groove 131. Or, the mounting groove 131 can be formed on the cover portion 113, and the mounting seat 130 covers the notch 132 of the mounting groove 131.

[0201] Exemplarily, the mounting seat 130 can be generally in the shape of a strip-shaped cuboid, and the length direction 130a of the mounting seat 130 can be parallel to the width direction of the fixing belt. The cover portion 113 can be generally in the shape of a rectangular plate. The cover portion 113 is disposed on the mounting seat 130, and the stacked mounting seat 130 and the cover portion 113 have a small thickness dimension and a compact structure. In addition, the mounting seat 130 and the cover portion 113 can also be set to other shapes.

[0202] When assembling the cover portion 113 and the mounting seat 130, the cover portion 113 and the mounting seat 130 can adopt assembly methods such as fasteners (such as screws), buckles, and bonding.

[0203] Exemplarily, refer to Figure 6 and Figure 7 , the cover part 113 and the mounting base 130 are connected by fasteners (such as screws), and the fasteners are arranged along the stacking direction of the cover part 113 and the mounting base 130. The fasteners can be threadedly connected to the mounting base 130 after passing through the cover part 113, or threadedly connected to the cover part 113 after passing through the mounting base 130.

[0204] In order to make the connection between the cover part 113 and the mounting base 130 reliable and make the stacking thickness of the cover part 113 and the mounting base 130 smaller, in some embodiments, refer to Figure 6 and Figure 7 , the cover part 113 and the mounting base 130 are connected by fasteners (such as screws). An outward convex structure 1132 can be provided on the side of the cover part 113 facing the mounting base 130, and an inward concave structure 139 can be provided on the side of the mounting base 130 facing the cover part 113. The inward concave structure 139 and the outward convex structure 1132 are adapted to each other. For example, when the outward convex structure 1132 is in the shape of an outward convex frame, the inward concave structure 139 is a frame-shaped groove; or when the outward convex structure 1132 is in the shape of an outward convex rectangle, the inward concave structure 139 is a rectangular groove. Aligning and assembling the outward convex structure 1132 on the inward concave structure 139 can increase the effective length of the fasteners, make the connection between the cover part 113 and the mounting base 130 reliable, and the total thickness of the cover part 113 and the mounting base 130 can be made smaller.

[0205] When setting the bayonet structure 140c, refer to Figures 6 to 8 , an elastic telescopic method can be adopted to reduce the situation of force deformation failure of the buckle 121 and the bayonet structure 140c. The bayonet structure 140c can include a sliding fastener 141 and an elastic member 142. The sliding fastener 141 is movably mounted on the mounting base 130. One end of the elastic member 142 is arranged opposite to the sliding fastener 141, and the other end of the elastic member 142 is arranged opposite to the wall surface of the mounting base 130. The elastic member 142 is used to make the sliding fastener 141 elastically telescopic. When the elastic member 142 is in the extended state, the sliding fastener 141 is in the extended position, and the snap-fastener assembly 140 is in the locked state (as shown in Fig.15 ) or the separated state (as shown in Fig.16 ). When the elastic member 142 is in the compressed state, the sliding fastener 141 is in the retracted position, and the snap-fastener assembly 140 is in the critical state (as shown in Fig.17 ).

[0206] Adopt a bayonet structure 140c combining a sliding fastener 141 and an elastic member 142. During the contact and fastening process between the sliding fastener 141 and the buckle 121, the elastic member 142 can be telescopically deformed, and the sliding fastener 141 can have a relatively large sliding stroke under the action of the elastic member 142. That is, the bayonet structure 140c has a relatively large elastic stroke, and neither the sliding fastener 141 nor the buckle 121 is easily deformed and fails due to force, making the reliability and stability of the watch buckle 100 relatively high.

[0207] Combined with Fig.15 , when the snap - fastener assembly 140 is in the locked state, that is, the first part 140a (bayonet structure 140c) and the second part 140b (buckle 121) are engaged, the elastic member 142 on the mounting base 130 extends to its maximum length. The extended elastic member 142 causes the sliding fastener 141 to protrude, and the protruding sliding fastener 141 contacts and engages with the buckle 121. The first folding member 110 and the second folding member 120 remain closed.

[0208] Combined with Fig.16 , when the snap - fastener assembly 140 is in the separated state, that is, the first part 140a (bayonet structure 140c) and the second part 140b (buckle 121) are separated, the elastic member 142 on the mounting base 130 extends to its maximum length. The extended elastic member 142 causes the sliding fastener 141 to protrude, so that the sliding fastener 141 and the buckle 121 are completely separated. The first folding member 110 and the second folding member 120 remain open.

[0209] Combined with Fig.17 , the critical state is the intermediate state between the locked state and the separated state. When the snap - fastener assembly 140 is in the critical state, the sliding fastener 141 and the buckle 121 are in contact. The sliding fastener 141 compresses the elastic member 142 on the mounting base 130 to store energy, and the length of the elastic member 142 becomes smaller. By moving the buckle 121 relative to the mounting base 130, the buckle 121 and the sliding fastener 141 can be engaged or separated, and the elastic member 142 on the mounting base 130 can return to its maximum length.

[0210] The elastic member 142 can be an elastic structure such as a spring or a spring plate.

[0211] When setting the bayonet structure 140c with a sliding fastener 141 and an elastic member 142, there are various optional implementation methods. Two implementation methods are exemplarily given below.

[0212] The first implementation method of the bayonet structure 140c with a sliding fastener 141 and an elastic member 142: Refer to Figures 6 to 8, the sliding fastener 141 includes a sliding portion 1411 and a first fastening portion 1412. The sliding portion 1411 is slidably mounted on the mounting base 130. The sliding portion 1411 has opposite ends along its sliding direction (i.e., the moving direction 141a of the sliding fastener 141). The first fastening portion 1412 is connected to one end of the sliding portion 1411, and the elastic member 142 is provided at the other end of the sliding portion 1411. The buckle 121 can be fastened to the first fastening portion 1412.

[0213] The sliding fastener 141 having the sliding portion 1411 and the first fastening portion 1412 can move along a predetermined direction on the mounting base 130. In combination Fig.16 , the snap-fastening assembly 140 is in a separated state. Under the action of the elastic member 142, the first fastening portion 1412 extends out of the avoidance area 1131 of the cover portion 113, and the buckle 121 and the extended first fastening portion 1412 are completely separated.

[0214] In combination Fig.17 , when the buckle 121 and the first fastening portion 1412 need to be fastened, the buckle 121 is pushed into the first fastening portion 1412. The buckle 121 acts on the first fastening portion 1412 to cause the first fastening portion 1412 to retract, and the elastic member 142 is compressed to store energy. The snap-fastening assembly 140 is in a critical state. In combination Fig.15 , continue to push the buckle 121 into the first fastening portion 1412 to make the buckle 121 and the first fastening portion 1412 in snap-fastening cooperation. The elastic member 142 expands to release energy to make the first fastening portion 1412 extend, and the snap-fastening assembly 140 is in a locked state.

[0215] The bayonet structure 140c formed by the cooperation of the sliding fastener 141 and the elastic member 142. During the contact and snap-fastening process between the buckle 121 and the sliding fastener 141, the elastic member 142 can make the sliding fastener 141 elastically expand and contract. The bayonet structure 140c has a large elastic stroke, and the buckle 121 and the sliding fastener 141 are not easily deformed and fail under force, so the reliability of the watch buckle 100 is high.

[0216] In the sliding direction of the sliding portion 1411 (i.e., the moving direction 141a of the sliding fastener 141), the cross-sectional shape of the sliding portion 1411 is adapted to the cross-sectional shape of the mounting groove 131 of the mounting base 130, so that the sliding portion 1411 can be slidably mounted on the mounting base 130 along a predetermined direction. For example, in the sliding direction of the sliding portion 1411, both the cross-section of the sliding portion 1411 and the cross-section of the mounting groove 131 are rectangular. The sliding portion 1411 can be in the shape of a cuboid or other shapes. The first fastening portion 1412 can be in the shape of a sheet, an L shape or other shapes.

[0217] In order to limit the movement range of the sliding portion 1411, in some embodiments, refer to Figure 6 、 Figure 8, the mounting base 130 has a first stop wall 133 which is used for abutting and cooperating with the sliding part 1411 to limit the sliding part 1411; the first stop wall 133 has an opening 134 for the first fastening part 1412 to extend out.

[0218] Combined Fig.15 、 Fig.17 , when the snap-fastening component 140 is in the locked state or the separated state, the extended elastic member 142 acts on the sliding part 1411, causing the sliding part 1411 to abut against the first stop wall 133, limiting the position of the sliding part 1411, and the first fastening part 1412 can extend out through the opening 134. The extended first fastening part 1412 and the buckle 121 can maintain the snap-fastening cooperation or be separated.

[0219] Exemplarily, referring to Figure 6 、 Figure 8 , the first fastening part 1412 includes a first section and a second section. The first section and the second section are distributed in an L shape and are connected. The first section is connected to the sliding part 1411, and the second section is used for snap-fastening cooperation with the buckle 121. The L-shaped first fastening part 1412 has better structural strength, improving the reliability of the first fastening part 1412. Under the action of the elastic member 142, the sliding part 1411 abuts against the first stop wall 133, the first section is located at the opening 134, and the second section extends out of the opening 134.

[0220] In order to limit the elastic member 142 on the sliding part 1411, in some embodiments, referring to Figure 6 、 Figure 8 、 Fig.15 , the sliding fastener 141 further includes a first limiting part 1413 which is connected to one end of the sliding part 1411 facing away from the first fastening part 1412, and one end of the elastic member 142 is installed on the first limiting part 1413.

[0221] During the compression or extension process of the elastic member 142, one end of the elastic member 142 remains installed on the first limiting part 1413 and abuts against the sliding part 1411, reducing the situation that the elastic member 142 detaches from the sliding part 1411 and improving the reliability of the cooperation between the sliding fastener 141 and the elastic member 142.

[0222] Exemplarily, the elastic member 142 is a compression spring. The first limiting part 1413 can be a columnar structure provided on the sliding part 1411, and the compression spring is sleeved on the columnar structure. Alternatively, the first limiting part 1413 can also be a positioning hole provided on the sliding part 1411, and one end of the compression spring extends into the positioning hole.

[0223] In order to increase the elastic force of the elastic member 142 in the limited space of the mounting base 130, in some embodiments, referring to Figure 6 、 Figure 8, a plurality of elastic members 142 are provided on the sliding portion 1411, the mounting base 130 has a partition wall 135, and adjacent elastic members 142 are separated by the partition wall 135.

[0224] By arranging a plurality of short elastic members 142 side by side on the small-sized mounting base 130, and making the plurality of elastic members 142 cooperate with the sliding portion 1411, the elastic force received by the sliding portion 1411 can be increased. The adjacent elastic members 142 are isolated by the partition wall 135 on the mounting base 130, avoiding the interference of the two elastic members 142 during use, and improving the reliability and stability of the bayonet structure 140c.

[0225] To facilitate the pushing of the buckle 121 into the bayonet structure 140c, in some embodiments, refer to Fig.17 , the head 1212 of the buckle 121 has a first guiding surface 121a. During the process of the first folding member 110 and the second folding member 120 switching from the open state to the closed state, the first guiding surface 121a is used for sliding contact with the first buckling portion 1412, so that the snap component 140 switches from the separated state to the critical state.

[0226] During the process of pressing the snap component 140 to push the buckle 121 into the bayonet structure 140c, the first guiding surface 121a of the head 1212 of the buckle 121 is in sliding contact with the first buckling portion 1412, which can make the first buckling portion 1412 switch from the extended position to the retracted position, and the elastic member 142 switches from the extended state to the compressed state, that is, the snap component 140 switches from the separated state (as shown in Fig.16 ) to the critical state (as shown in Fig.17 ), facilitating the user to push the buckle 121 into the bayonet structure 140c. The first guiding surface 121a can be an arc surface or other smooth curved surfaces. Continuing to press the snap component 140 to completely push the buckle 121 into the bayonet structure 140c, the elastic member 142 extends to make the first buckling portion 1412 extend, so that the buckle 121 and the bayonet structure 140c are snap-fitted (as shown in Fig.15 ).

[0227] To facilitate the detachment of the buckle 121 from the bayonet structure 140c, in some embodiments, refer to Fig.15 , the middle part of the buckle 121 has a second guiding surface 121b. During the process of the first folding member 110 and the second folding member 120 switching from the closed state to the open state, the second guiding surface 121b is used for sliding contact with the first buckling portion 1412, so that the snap component 140 switches from the locked state to the critical state.

[0228] During the process of pulling the buckle 121 to disengage the buckle 121 from the bayonet structure 140c, the second guiding surface 121b in the middle of the buckle 121 and the first buckling part 1412 are in sliding contact, enabling the first buckling part 1412 to switch from the extended position to the retracted position, and the elastic member 142 to switch from extension to compression, that is, the snap component 140 switches from the locked state (as shown in Fig.15 ), to the critical state (as shown in Fig.17 ), which facilitates the user to disengage the buckle 121 from the bayonet structure 140c. The second guiding surface 121b can be an arc surface or other smooth curved surfaces. Continuing to pull the buckle 121 to completely disengage the buckle 121 from the bayonet structure 140c, the elastic member 142 extends to make the first buckling part 1412 extend, so that the buckle 121 and the bayonet structure 140c are completely separated (as shown in Fig.16 ).

[0229] Exemplarily, referring to Figure 7 and Fig.15 , the buckle 121 includes a columnar part 1211 and a head part 1212. The head part 1212 is connected to one end of the columnar part 1211, and the other end of the columnar part 1211 is connected to the fourth end 120b of the second folding member 120. One end of the head part 1212 far from the columnar part 1211 has a first guiding surface 121a. One side of the head part 1212 facing the columnar part 1211 has a second guiding surface 121b.

[0230] To achieve a reliable connection between the buckle 121 and the bayonet structure 140c, in some embodiments, referring to Figure 6 , Figure 8 , Fig.15 , the bayonet structures 140c are arranged in pairs. The first buckling parts 1412 in the paired bayonet structures 140c are arranged facing each other at intervals, and the elastic telescopic directions of the paired bayonet structures 140c are opposite. The buckle 121 includes a columnar part 1211 and a head part 1212. The head part 1212 is connected to one end of the columnar part 1211, and the other end of the columnar part 1211 is connected to the fourth end 120b of the second folding member 120. When the first folding member 110 and the second folding member 120 are closed, the columnar part 1211 is located between the paired first buckling parts 1412, and the head part 1212 abuts on the paired first buckling parts 1412.

[0231] Combined with Fig.16 , when the snap component 140 is in the separated state, the elastic members 142 in the two bayonet structures 140c respectively act on the corresponding sliding fasteners 141, so that the two sliding fasteners 141 are pushed out towards each other, and the two sliding fasteners 141 are arranged at intervals.

[0232] Combined with Fig.17, the buckle 121 is pushed between the first buckling parts 1412 of the two sliding fasteners 141, the two sliding fasteners 141 move in opposite directions, and the two sliding fasteners 141 act on the corresponding elastic members 142, causing the two elastic members 142 to be compressed in opposite directions, and the snap - fastener assembly 140 to be in a critical state.

[0233] Combine Fig.15 , continue to push the buckle 121 between the first buckling parts 1412 of the two sliding fasteners 141. Under the action of the two elastic members 142, the corresponding sliding fasteners 141 move towards each other, causing the two sliding fasteners 141 to be pushed out, and the two first buckling parts 1412 to abut against the head 1212 of the buckle 121, making the snap - fastener assembly 140 in a locked state. The same buckle 121 and the paired bayonet structures 140c are snap - fitted, which can improve the connection reliability of the snap - fastener assembly 140.

[0234] In order to make the bayonet structure 140c occupy a smaller space on the mounting seat 130, in some embodiments, refer to Figure 8 , Fig.15 , the moving direction 141a of the sliding fastener 141, the telescopic direction of the elastic member 142 and the length direction 130a of the mounting seat 130 are parallel. The length direction 130a of the mounting seat 130 can be the width direction of the fixing band of the wearable device 1000.

[0235] Setting the moving direction 141a of the sliding fastener 141 and the telescopic direction of the elastic member 142 along the length direction 130a of the mounting seat 130 makes full use of the space in the length direction 130a of the mounting seat 130, so that the width dimension of the mounting seat 130 can be made smaller.

[0236] Exemplarily, the mounting seat 130 is generally cuboid, the length direction 130a of the mounting seat 130 is the width direction of the fixing band, the width direction of the mounting seat 130 is the extending direction of the fixing band, and the thickness direction of the mounting seat 130 is the thickness direction of the fixing band.

[0237] In some other embodiments, the moving direction 141a of the sliding fastener 141 and the telescopic direction of the elastic member 142 are parallel, and the moving direction 141a of the sliding fastener 141 and the length direction 130a of the mounting seat 130 can form a predetermined angle. For example, the moving direction 141a of the sliding fastener 141 is perpendicular to the length direction 130a of the mounting seat 130.

[0238] The second implementation manner of the bayonet structure 140c having the sliding fastener 141 and the elastic member 142: Refer to Figures 18 to 23, the mounting base 130 has a mounting hole 136; the sliding fastener 141 includes a button portion 1414 and a second fastening portion 1416. The button portion 1414 is slidably mounted on the mounting base 130 and exposed at the mounting hole 136. The second fastening portion 1416 is connected to the button portion 1414. The elastic member 142 is disposed on a side of the button portion 1414 away from the mounting hole 136. Combining Fig.24 , the buckle 121 can be snapped onto the second fastening portion 1416.

[0239] The sliding fastener 141 having the button portion 1414 and the second fastening portion 1416 can move along a predetermined direction on the mounting base 130, and the position of the button portion 1414 can be adjusted by pressing. Combining Fig.25 , the snap-fastening component 140 is in a separated state. Under the action of the elastic member 142, the second fastening portion 1416 extends out, and the button portion 1414 is exposed at the mounting hole 136, and the buckle 121 and the extended second fastening portion 1416 are completely separated.

[0240] Combining Fig.26 , when the buckle 121 and the second fastening portion 1416 need to be snapped together, press the button portion 1414, and the second fastening portion 1416 retracts following the button portion 1414, and the elastic member 142 is compressed to store energy. Push the buckle 121 into the second fastening portion 1416, and the snap-fastening component 140 is in a critical state. Combining Fig.24 , continue to push the buckle 121 into the second fastening portion 1416 to make the buckle 121 and the second fastening portion 1416 snap-fit. The elastic member 142 extends to release energy to make the second fastening portion 1416 extend out, and the snap-fastening component 140 is in a locked state.

[0241] Combining Fig.26 , when the buckle 121 and the second fastening portion 1416 need to be separated, press the button portion 1414, and the second fastening portion 1416 retracts following the button portion 1414, and the elastic member 142 is compressed to store energy. The buckle 121 can separate from the second fastening portion 1416. Combining Fig.25 , after the buckle 121 separates from the second fastening portion 1416 and the button portion 1414 is released, the elastic member 142 extends to release energy, so that the button portion 1414 resets to the mounting hole 136, and the second fastening portion 1416 extends out.

[0242] The bayonet structure 140c formed by the cooperation of the sliding fastener 141 and the elastic member 142. During the contact and snap-fastening process of the buckle 121 and the sliding fastener 141, the elastic member 142 can make the sliding fastener 141 elastically expand and contract. The bayonet structure 140c has a large elastic stroke, and the buckle 121 and the sliding fastener 141 are not easily deformed and fail under force, and the reliability of the watch buckle 100 is high.

[0243] Combining Fig.18 、 Fig.19, in the sliding direction of the button part 1414 (i.e., the moving direction 141a of the sliding fastener 141), the cross-sectional shape of the button part 1414 and the cross-sectional shape of a part of the installation groove 131 of the mounting base 130 are adapted to each other, so that the button part 1414 can be linearly slidably mounted on the mounting base 130 along a predetermined direction. For example, in the sliding direction of the button part 1414, both the cross-section of the button part 1414 and the cross-sectional shape of a part of the installation groove 131 are rectangular. The button part 1414 can be generally in the shape of a cuboid or other shapes. The second buckling part 1416 can be in the shape of a strip or other shapes.

[0244] To limit the moving range of the button part 1414, in some embodiments, refer to Fig.18 , Fig.19 , the sliding fastener 141 further includes a second limiting part 1417. The second limiting part 1417 is connected to the button part 1414. The mounting base 130 has a second stop wall 137. The second stop wall 137 is used for abutting and cooperating with the second limiting part 1417 to limit the button part 1414.

[0245] When the snap component 140 is in the locked state or the separated state, the extended elastic member 142 acts on the button part 1414, so that the second limiting part 1417 abuts against the second stop wall 137, limiting the position of the button part 1414 to prevent the button part 1414 from detaching from the mounting base 130. The second limiting part 1417 can be an outward convex structure provided on the button part 1414, and the outward convex structure abuts and cooperates with the second stop wall 137.

[0246] To facilitate the installation of the elastic member 142, in some embodiments, refer to Fig.18 , Fig.19 , one side of the button part 1414 away from the mounting hole 136 has a receiving groove 1415, and the elastic member 142 is at least partially disposed in the receiving groove 1415. Disposing the elastic member 142 in the receiving groove 1415 of the button part 1414 can reduce the space occupied by the elastic member 142 on the mounting base 130 and facilitate the positioning and installation of one end of the elastic member 142 on the button part 1414.

[0247] To facilitate the pushing of the buckle 121 into the bayonet structure 140c, in some embodiments, refer to Fig.25 , Fig.26 , the head 1212 of the buckle 121 has a third guiding surface 121c. During the process of the first folding member 110 and the second folding member 120 being switched from the open state to the closed state, the third guiding surface 121c is used for sliding contact with the second buckling part 1416, so that the snap component 140 is switched from the separated state (as shown in Fig.25 ) to the critical state (as shown in Fig.26 ).

[0248] During the process of pressing the snap component 140 to push the snap 121 into the bayonet structure 140c, the third guiding surface 121c of the head 1212 of the snap 121 and the second engaging portion 1416 are in sliding contact, enabling the second engaging portion 1416 to switch from the extended position to the retracted position, and the elastic member 142 to switch from extension to compression, that is, the snap component 140 switches from the separated state to the critical state, facilitating the user to push the snap 121 into the bayonet structure 140c. The third guiding surface 121c can be an inclined surface, an arc surface or other smooth curved surfaces. Continuing to press the snap component 140 to completely push the snap 121 into the bayonet structure 140c, the elastic member 142 extends to make the second engaging portion 1416 extend out of the avoidance area 1131 of the cover portion 113, so that the snap 121 and the bayonet structure 140c are engaged and matched (as Fig.24 shown).

[0249] In order to arrange the long key portion 1414 on the mounting base 130 with a small space, in some embodiments, referring to Fig.18 , Fig.19 , Fig. 22 , the moving direction 141a of the sliding fastener 141 and the telescopic direction of the elastic member 142 are parallel, and the moving direction 141a of the sliding fastener 141 is perpendicular to the length direction 130a of the mounting base 130.

[0250] By arranging the moving direction 141a of the sliding fastener 141 and the telescopic direction of the elastic member 142 both perpendicular to the length direction 130a of the mounting base 130, making full use of the space in the length direction 130a of the mounting base 130, the key portion 1414 in the sliding fastener 141 can be made relatively long, facilitating the user to press the key portion 1414.

[0251] Exemplarily, the mounting base 130 is generally in the shape of a cuboid, the length direction 130a of the mounting base 130 is the width direction of the fixing band, the width direction of the mounting base 130 is the extending direction of the fixing band, and the thickness direction of the mounting base 130 is the thickness direction of the fixing band.

[0252] In other embodiments, the moving direction 141a of the sliding fastener 141 and the telescopic direction of the elastic member 142 are parallel, and the moving direction 141a of the sliding fastener 141 and the length direction 130a of the mounting base 130 can form a predetermined angle. For example, the moving direction 141a of the sliding fastener 141 is parallel to the length direction 130a of the mounting base 130.

[0253] When setting the bayonet structure 140c, referring to Figures 27 to 34 , an elastic deformation method can be adopted to reduce the situation of force deformation failure of the snap 121 and the bayonet structure 140c. The bayonet structure 140c can include a bent elastic piece 143 that can be elastically deformed, and the bent elastic piece 143 has a card slot 1431 with a variable width at the mouth portion 1432. Combining Fig.28In (b) and (c) thereof, when the snap component 140 is in the locked state or the separated state, the width of the mouth 1432 of the card slot 1431 is the first width 1432a. Referring to Fig.28 In (d) thereof, when the snap component 140 is in the critical state, the width of the mouth 1432 of the card slot 1431 is the second width 1432b; the first width 1432a is less than the second width 1432b.

[0254] Adopting the bayonet structure 140c of the bent elastic piece 143, during the contact and buckling process between the bent elastic piece 143 and the buckle 121, the bent elastic piece 143 can be bent and deformed, the bent elastic piece 143 can have a large elastic deformation amount, and neither the bent elastic piece 143 nor the buckle 121 is easily deformed and fails under force, so that the reliability and stability of the watch buckle 100 are relatively high.

[0255] Referring to Fig.28 In (b) thereof, when the snap component 140 is in the locked state, that is, the first part 140a (bayonet structure 140c) and the second part 140b (buckle 121) are clamped and matched, the width of the mouth 1432 of the card slot 1431 of the bent elastic piece 143 (that is, the first width 1432a) is small, and the bent elastic piece 143 and the buckle 121 are in contact and clamped. The first folding member 110 and the second folding member 120 are kept closed.

[0256] Referring to Fig.28 In (c) thereof, when the snap component 140 is in the separated state, that is, the first part 140a (bayonet structure 140c) and the second part 140b (buckle 121) are separated, the width of the mouth 1432 of the card slot 1431 of the bent elastic piece 143 (that is, the first width 1432a) is small, and the bent elastic piece 143 and the buckle 121 are completely separated. The first folding member 110 and the second folding member 120 are kept open.

[0257] Referring to Fig.28 In (d) thereof, the critical state is the intermediate state between the locked state and the separated state. When the snap component 140 is in the critical state, the width of the mouth 1432 of the card slot 1431 of the bent elastic piece 143 (that is, the second width 1432b) is large, and by moving the buckle 121 relative to the mounting base 130, the buckle 121 and the card slot 1431 of the bent elastic piece 143 can be clamped and matched or separated.

[0258] When setting the bayonet structure 140c in the form of the bent elastic piece 143, there are various optional implementation manners, and two implementation manners are exemplarily given below.

[0259] The first implementation manner of the bayonet structure 140c in the form of the bent elastic piece 143: Refer to Figures 27 to 34, the bent elastic piece 143 includes a first transverse arm 143a, a first inclined arm 143b, a second inclined arm 143c, a second transverse arm 143d, a third inclined arm 143e, a fourth inclined arm 143f and a third transverse arm 143g connected in sequence. The first transverse arm 143a, the second transverse arm 143d and the third transverse arm 143g are flush and arranged on the mounting base 130. The first inclined arm 143b and the second inclined arm 143c are arranged in parallel. The third inclined arm 143e and the fourth inclined arm 143f are arranged in parallel. The second inclined arm 143c and the third inclined arm 143e are spaced apart, and a card slot 1431 is formed between the second inclined arm 143c and the third inclined arm 143e. Combining Fig.28 with (b) in, when the snap component 140 is in the locked state and the snap 121 is located between the second inclined arm 143c and the third inclined arm 143e, the second inclined arm 143c and the third inclined arm 143e respectively abut against opposite sides of the snap 121.

[0260] The above-mentioned bent elastic piece 143 can be formed by bending a sheet-shaped elastic piece (such as a stainless steel sheet), which is easy to manufacture. Combining Fig.28 with (c) in, in the initial state of the bent elastic piece 143, the second inclined arm 143c, the third inclined arm 143e and the second transverse arm 143d are generally arranged in a triangular shape. The end of the second inclined arm 143c far from the second transverse arm 143d and the end of the third inclined arm 143e far from the second transverse arm 143d are spaced close to each other, and the width of the mouth 1432 of the card slot 1431 (i.e., the first width 1432a) is small. Combining Fig.28 with (d) in, when the snap 121 is just pushed into the card slot 1431 of the bent elastic piece 143, the snap 121 acts on the second inclined arm 143c and the third inclined arm 143e, causing the second inclined arm 143c and the third inclined arm 143e to open to both sides. The second inclined arm 143c moves following the first inclined arm 143b, and the fourth inclined arm 143f moves following the third inclined arm 143e. The width of the mouth 1432 of the card slot 1431 (i.e., the second width 1432b) is large. Combining Fig.28 with (b) in, when the snap 121 is completely pushed into the card slot 1431 of the bent elastic piece 143, the snap 121 is limited by the second inclined arm 143c and the third inclined arm 143e, realizing the locking of the snap 121 and the bent elastic piece 143.

[0261] In the case where the cover part 113 is provided on the mounting base 130 and the cover part 113 has an avoidance area 1131, refer to Fig.29 、 Fig.30, the card slot 1431 of the bent elastic piece 143 is arranged corresponding to the avoidance area 1131 of the cover part 113. The first inclined arm 143b and the second inclined arm 143c are located on one side edge of the avoidance area 1131, and the third inclined arm 143e and the fourth inclined arm 143f are located on the other side edge of the avoidance area 1131. The first transverse arm 143a and the third transverse arm 143g are limited by the cover part 113.

[0262] Refer to Fig.28 In (a) as shown, a fillet can be provided between the first inclined arm 143b and the second inclined arm 143c, and a fillet can be provided between the third inclined arm 143e and the fourth inclined arm 143f, which is convenient for the head 1212 of the buckle 121 to slide in contact with the fillet area, so that the head 1212 of the buckle 121 and the card slot 1431 of the bent elastic piece 143 are clamped and matched.

[0263] The implementation method of the bayonet structure 140c in the form of the second bent elastic piece 143: Refer to Figures 35 to 42 , the bent elastic piece 143 includes a sheet part 143h, a first cantilever 143i and a second cantilever 143j. The sheet part 143h is arranged on the mounting seat 130. One end of the first cantilever 143i is connected to the sheet part 143h, and one end of the second cantilever 143j is connected to the sheet part 143h. The first cantilever 143i and the second cantilever 143j are arranged at intervals, and a card slot 1431 is formed between the first cantilever 143i and the second cantilever 143j. Combine Fig.36 In (b) as shown, when the snap-fastener assembly 140 is in the locked state and the buckle 121 is located between the first cantilever 143i and the second cantilever 143j, the first cantilever 143i and the second cantilever 143j respectively abut against the opposite sides of the buckle 121.

[0264] The above-mentioned bent elastic piece 143 can be formed by bending a sheet elastic piece (such as a stainless steel sheet), which is easy to manufacture. Combine Fig.36 In (c) as shown, in the initial state of the bent elastic piece 143, a card slot 1431 with a larger lower part and a smaller upper part is formed between the first cantilever 143i and the second cantilever 143j. The free ends of the first cantilever 143i and the second cantilever 143j are arranged close to each other at intervals, and the width of the mouth 1432 of the card slot 1431 (i.e., the first width 1432a) is smaller. Combine Fig.36 In (d) as shown, when the buckle 121 is just pushed into the card slot 1431 of the bent elastic piece 143, the buckle 121 acts on the first cantilever 143i and the second cantilever 143j, causing the first cantilever 143i and the second cantilever 143j to open to both sides, and the width of the mouth 1432 of the card slot 1431 (i.e., the second width 1432b) is larger. Combine Fig.36In (b) of the figure, when the buckle 121 is fully pushed into the card slot 1431 of the bent elastic piece 143, the buckle 121 is limited by the first cantilever 143i and the second cantilever 143j, realizing the locking of the buckle 121 and the bent elastic piece 143.

[0265] For the bayonet structure 140c of the above two forms of bent elastic pieces 143, refer to Fig.28 、 Fig.36 , the buckle 121 includes a columnar portion 1211 and a head portion 1212. The head portion 1212 is connected to one end of the columnar portion 1211, and the other end of the columnar portion 1211 is connected to the fourth end 120b of the second folding member 120; in the width direction of the mouth portion 1432 of the card slot 1431, the width 1212a of the head portion 1212 is greater than the width 1211a of the columnar portion 1211, and the width 1212a of the head portion 1212 is greater than the first width 1432a.

[0266] The buckle 121 having the columnar portion 1211 and the head portion 1212 is easy to mold, and the buckle 121 can be snap-fitted with the bent elastic piece 143. The width of the head portion 1212 of the buckle 121 is set to be greater than the width of the mouth portion 1432 of the card slot 1431 (i.e., the first width 1432a) in the locked state or the separated state, so that when the buckle 121 is snap-fitted into the card slot 1431 of the bent elastic piece 143, the buckle 121 and the bent elastic piece 143 remain locked, and when the buckle 121 is separated from the card slot 1431 of the bent elastic piece 143, the two are completely separated.

[0267] For the bayonet structure 140c of the above two forms of bent elastic pieces 143, refer to Fig.28 、 Fig.36 , in order to facilitate the pushing of the buckle 121 into the bent elastic piece 143, in some embodiments, the side of the head portion 1212 away from the columnar portion 1211 has a fourth guiding surface 121d. During the process of the first folding member 110 and the second folding member 120 being switched from the open state to the closed state, the fourth guiding surface 121d is used for sliding contact with the bent elastic piece 143, so that the snap-fastener assembly 140 is switched from the separated state to the critical state.

[0268] Combined with Fig.28 In (c) and (d) of the figure, during the process of pressing the snap-fastener assembly 140 to push the buckle 121 into the bent elastic piece 143, the fourth guiding surface 121d of the head portion 1212 of the buckle 121 is in sliding contact with the bent elastic piece 143, which can make the width of the card slot 1431 of the bent elastic piece 143 become larger, that is, the snap-fastener assembly 140 is switched from the separated state to the critical state, facilitating the user to push the buckle 121 into the bent elastic piece 143. The fourth guiding surface 121d can be an arc surface or other smooth curved surfaces. Combined with Fig.28In (b) of the above, continue to press the snap component 140 to fully push the snap 121 into the bent elastic piece 143. The width of the mouth 1432 of the card slot 1431 of the bent elastic piece 143 becomes smaller, so that the snap 121 and the bent elastic piece 143 are snap-fitted.

[0269] For the bayonet structures 140c of the above two forms of bent elastic pieces 143, refer to Fig.28 , Fig.36 , in order to facilitate the separation of the snap 121 from the bent elastic piece 143, in some embodiments, the head 1212 has a fifth guiding surface 121e near the columnar part 1211. During the process of the first folding member 110 and the second folding member 120 switching from the closed state to the open state, the fifth guiding surface 121e is used to slidably contact the bent elastic piece 143, so that the bayonet structure 140c switches from the locked state to the critical state.

[0270] Combined with Fig.28 In (b) and (d) of the above, during the process of pulling the snap 121 to separate the snap 121 from the bent elastic piece 143, the fifth guiding surface 121e of the head 1212 of the snap 121 slidably contacts the bent elastic piece 143, which can make the width of the card slot 1431 of the bent elastic piece 143 become larger, that is, the snap component 140 switches from the locked state to the critical state, facilitating the user to separate the snap 121 from the bent elastic piece 143. The fifth guiding surface 121e can be an arc surface or other smooth curved surfaces. Combined with Fig.28 In (c) of the above, continue to pull the snap 121 to completely separate the snap 121 from the bent elastic piece 143. The width of the mouth 1432 of the card slot 1431 of the bent elastic piece 143 becomes smaller, so that the snap 121 and the bent elastic piece 143 are completely separated.

[0271] It can be understood that in the case of using the second snap component, the first part 140a provided on the mounting seat 130 is the snap, and the second part 140b provided at the fourth end 120b of the second folding member 120 is the bayonet structure, and the bayonet structure and the snap can be snap-fitted. Compared with the first snap component 140, the second snap component 140 exchanges the positions of the snap and the bayonet structure. Correspondingly, the fourth end 120b of the second folding member 120 serves as the carrier of the bayonet structure, and a structure adapted to the bayonet structure can be provided. For example, an installation groove is provided at the fourth end 120b of the second folding member 120, so that the bayonet structure is provided at the installation groove. The specific structure of the second snap component can refer to the embodiment of the first snap component 140 above.

[0272] Exemplarily, the bayonet structure can adopt an elastic telescopic manner to reduce the failure of the buckle and the bayonet structure due to force-induced deformation. The bayonet structure can include a sliding fastener and an elastic member. The sliding fastener is movably installed on the fourth end 120b of the second folding member 120. One end of the elastic member is disposed opposite to the sliding fastener, and the other end of the elastic member is disposed opposite to the wall surface of the fourth end 120b of the second folding member 120. The elastic member is used to make the sliding fastener elastically telescopic. When the elastic member is in an extended state, the sliding fastener is in an extended position, and the snap component 140 is in a locked state or a separated state. When the elastic member is in a compressed state, the sliding fastener is in a retracted position, and the snap component 140 is in a critical state. During the contact and buckling process between the sliding fastener and the buckle, the sliding fastener can have a large sliding stroke under the action of the elastic member, and neither the sliding fastener nor the buckle is easily deformed and failed due to force, so that the reliability and stability of the watch buckle 100 are relatively high.

[0273] Exemplarily, the sliding fastener includes a sliding portion and a first buckle portion. The sliding portion is slidably installed on the fourth end 120b of the second folding member 120. The sliding portion has opposite ends along its sliding direction. The first buckle portion is connected to one end of the sliding portion, and the elastic member is disposed at the other end of the sliding portion. The buckle can be snapped onto the first buckle portion. The cooperation of the sliding fastener and the elastic member enables the elastic member to make the sliding fastener elastically telescopic during the contact and buckling process between the buckle and the sliding fastener, and neither the buckle nor the sliding fastener is easily deformed and failed due to force, so that the reliability of the watch buckle 100 is high.

[0274] It can be understood that when setting the first fixing band 200, the second fixing band 300 and the watch buckle 100, the first implementation manner of the first fixing band 200, the second fixing band 300 and the watch buckle 100 as shown in Figure 1 , Figure 2 can be adopted, or the second implementation manner of the first fixing band 200, the second fixing band 300 and the watch buckle 100 as shown in Figure 4 can be adopted.

[0275] When configuring the first arc plate 111 and the second arc plate 122, the first implementation manner of the first arc plate 111 and the second arc plate 122 as shown in Figure 6 , Fig.10 can be adopted, or the second implementation manner of the first arc plate 111 and the second arc plate 122 as shown in Fig.14 can be adopted.

[0276] When setting the snap component 140, the first implementation manner of the snap component 140 as shown in Figure 6 , Figure 7 can be adopted (the first part 140a is the bayonet structure 140c, and the second part 140b is the buckle 121), or the second implementation manner of the snap component 140 can be adopted (the first part 140a is the buckle 121, and the second part 140b is the bayonet structure 140c).

[0277] When setting the bayonet structure 140c, an elastic telescopic method or an elastic deformation method can be adopted. The elastic telescopic method can specifically be, for example, Figures 6 to 8 the first implementation method of the bayonet structure 140c with a sliding fastener 141 and an elastic member 142 as shown, or it can also be Figures 18 to 23 the second implementation method of the bayonet structure 140c with a sliding fastener 141 and an elastic member 142 as shown. The elastic deformation method can specifically be, for example, Figures 27 to 34 the first implementation method of the bayonet structure 140c in the form of a bent elastic sheet 143 as shown, or it can also be Figures 35 to 42 the second implementation method of the bayonet structure 140c in the form of a bent elastic sheet 143 as shown.

[0278] In some embodiments, referring to Figures 43 to 54 , a receiving groove 600 for receiving a part of the watch buckle 100 can be provided on the fixing band.

[0279] Exemplarily, referring to Figures 47 to 52 , a groove can be provided on the fixing band to receive the folding member, so that the folding member can partially or completely sink into the groove.

[0280] Referring to Figure 3 and Figure 5 , one end of the first fixing band 200 is rotatably connected to the mounting seat 130. The second fixing band 300 is detachably mounted on the second folding member 120. When the second fixing band 300 is mounted on the second folding member 120 and the first folding member 110 and the second folding member 120 are closed, the first folding member 110 and the second folding member 120 can be located inside the first fixing band 200 (as shown in Figure 3 ), or the first folding member 110 and the second folding member 120 can be located inside the second fixing band 300 (as shown in Figure 5 ).

[0281] Exemplarily, referring to Figure 43-Figure 46 , Figure 53 to Figure 54 , the receiving groove 600 can be provided on the side of the first fixing band 200 close to the mounting seat 130 and inside the first fixing band 200 to receive the first folding member 110 and the second folding member 120. The first folding member 110 and the second folding member 120 can be partially received in the receiving groove 600.

[0282] In some embodiments, referring to Figures 43 to 54 , the fixing band includes a first fixing band 200 and a second fixing band 300; the first end 200b of the first fixing band 200 is used to connect the watch buckle 100, combined with Fig.56, the second end 200c of the first fixing band 200 is used to connect to the device body 500, and the first fixing band 200 and the second fixing band 300 are detachably connected by the watch buckle 100; near the first end 200b of the first fixing band 200, a receiving groove 600 is provided on the inner side of the first fixing band 200, and the receiving groove 600 is used to receive at least a part of the watch buckle 100. When the user wears the wearable device 1000, the first fixing band 200 and the second fixing band 300 are connected by the watch buckle 100, and at least a part of the watch buckle 100 is located in the receiving groove 600, reducing the thickness of the overlapping part between the folding part of the watch buckle 100 and the first fixing band 200, improving the wearing comfort, and appearing thinner and more beautiful in appearance.

[0283] In some embodiments, refer to Figures 47 to 52 , the receiving groove 600 is a groove, and the receiving groove 600 does not penetrate the first fixing band 200. Combining Fig.56 , when the user wears the wearable device 1000, the first fixing band 200 and the second fixing band 300 are connected by the watch buckle 100, and a part (the first folding part 110 and the second folding part 120) of the watch buckle 100 is located in the receiving groove 600 and is blocked by the first fixing band 200, and the part of the watch buckle 100 received in the receiving groove 600 is not easily seen from the outside, making the first fixing band 200 have a better appearance.

[0284] In some embodiments, refer to Fig.47 , Fig.48 , the corner of the inner wall 601 of the receiving groove 600 is provided with a rounded corner 602. This structure is easy to manufacture and can be injection molded. The corner position of the receiving groove 600 is a rounded corner 602, which can reduce stress concentration, reduce tearing damage, and improve the structural reliability.

[0285] Exemplarily, the receiving groove 600 can be rectangular, and rounded corners 602 are respectively provided at the four corners of the rectangle, and the first folding part 110 and the second folding part 120 of the watch buckle 100 are partially located in the receiving groove 600.

[0286] In some embodiments, refer to Figures 45 to 48 , the length L1 and the width L2 of the receiving groove 600 can be set with reference to the length and width of the folding part to better accommodate the folding part. For example, the width L2 of the receiving groove 600 can be slightly wider than the width of the folding part or the same as the width of the folding part.

[0287] Exemplarily, refer to Figures 45 to 48 , the receiving groove 600 can extend from the first end 200b of the first fixing band 200 to the middle of the first fixing band 200. It is sufficient that the closed first folding part 110 and the second folding part 120 can be partially located in the receiving groove 600.

[0288] Exemplarily, the receiving groove 600 can extend from the first end 200b of the first fixing band 200 to the second end 200c of the first fixing band 200. The receiving groove 600 extends along the extending direction of the first fixing band 200 to both ends, so that the closed first folding member 110 and the second folding member 120 can be partially located in the receiving groove 600, which can also improve the flexibility of the first fixing band 200 and enhance the wearing comfort.

[0289] Fig.49 and Fig.50 is a cross-sectional view of the first fixing band along the length direction of the first fixing band. Fig.51 and Fig.52 is a cross-sectional view of the first fixing band along the width direction of the first fixing band. It can be understood that the thickness of the fixing band at the receiving groove 600 is less than the thickness of the fixing band where the receiving groove 600 is not provided.

[0290] It should be noted that the above description takes the setting of the receiving groove 600 on the first fixing band 200 as an example. It can be understood that the receiving groove 600 can also be provided on the second fixing band 300, or the receiving groove 600 can be provided on both the first fixing band 200 and the second fixing band 300.

[0291] It should be noted that the above description takes the setting of the receiving groove 600 on the inner side of the fixing band as an example. It can be understood that the receiving groove 600 can also be provided on the outer side of the fixing band, and the embodiments of the present application are not limited thereto.

[0292] It should be noted that the above description takes the receiving groove 600 as a groove provided on the fixing band as an example. It can be understood that the receiving groove 600 can also be other structures.

[0293] It should be noted that the above description takes the receiving groove 600 for receiving the folding member as an example. It can be understood that the receiving groove 600 can also be used to receive other structures of the watch buckle 100.

[0294] Referring to Fig.55 and Fig.56 , Fig.55 is a schematic structural diagram of an existing wearable device. The thickness at the overlapping part of the watch band and the watch buckle folding member is relatively thick, and the wearing comfort needs to be improved. Fig.56 is a schematic structural diagram of the wearable device 1000. When the user wears it, at least part of the structure of the watch buckle 100 (such as, the folding plate / folding member) can be received inside the fixing band, so as to reduce the thickness at the overlapping part of the folding member and the watch band, improve the wearing comfort, and also appear thinner and more beautiful in appearance.

[0295] In some embodiments, referring to Figure 43 to Figure 46, the inner side of the second fixing band 300 is used for installing the airbag 700. Fixing nail holes 302 and sliding nail holes 303 can be provided on the second fixing band 300, and the sliding nail holes 303 can extend along the extending direction of the second fixing band 300. The fixing nail holes 302 and the sliding nail holes 303 are spaced apart along the extending direction of the second fixing band 300. The fixing nail holes 302 are used for snap-fitting with the first convex nails 701 of the airbag 700, and the sliding nail holes 303 are used for sliding cooperation with the second convex nails 702 of the airbag 700.

[0296] The airbag 700 is part of the blood pressure detection module, which has been described above. The first convex nail 701 and the second convex nail 702 of the airbag 700 are located on the same outer side of the airbag 700. The first convex nail 701 is fixed to the second fixing band 300, and the second convex nail 702 can move relative to the second fixing band 300, so as to absorb the relative misalignment between the second fixing band 300 and the airbag 700 in the watch band 400 due to different curvatures during bending, adapt to users with different wrist sizes, and enable the airbag 700 to closely adhere to the outer surface of the user's wrist, which is beneficial to the accurate detection of the blood pressure detection module.

[0297] Exemplarily, the fixing nail holes 302 can be arranged near one end (i.e., the third end 300b of the second fixing band 300) where the second fixing band 300 is connected to the device body 500, and the sliding nail holes 303 can be arranged near the free end 300a of the second fixing band 300.

[0298] Regarding the multiple implementation manners of the above different components, they can be freely selected and combined according to needs.

[0299] For example, in an embodiment of a watch buckle, the implementation manner of the first snap component 140 and the implementation manner of the first bayonet structure 140c having a sliding fastener 141 and an elastic member 142 are adopted.

[0300] In another embodiment of a watch buckle, the implementation manner of the first snap component 140 and the implementation manner of the second bayonet structure 140c having a sliding fastener 141 and an elastic member 142 are adopted.

[0301] In another embodiment of a watch buckle, the implementation manner of the second snap component 140 and the implementation manner of the first bayonet structure 140c having a sliding fastener 141 and an elastic member 142 are adopted.

[0302] Also, for example, in an embodiment of a watch band or a wearable device, the implementation manner of the first first fixing band 200, the second fixing band 300 and the watch buckle 100 as shown in Figure 1 , Figure 2 is adopted, the implementation manner of the first snap component 140, and the implementation manner of the first bayonet structure 140c having a sliding fastener 141 and an elastic member 142.

[0303] In another embodiment of the watch band or wearable device, the implementation manners of the second first fixing band 200, the second fixing band 300 and the watch buckle 100 as shown in Figure 4 are adopted, the implementation manner of the second snap component 140 is adopted, and the implementation manner of the first bayonet structure 140c having a sliding fastener 141 and an elastic member 142 is adopted.

[0304] In another embodiment of the watch band or wearable device, the implementation manners of the first first fixing band 200, the second fixing band 300 and the watch buckle 100 as shown in Figure 1 , Figure 2 are adopted, the implementation manner of the first snap component 140 is adopted, and the implementation manner of the first bayonet structure 140c in the form of a bent elastic piece 143 is adopted.

[0305] Finally, it should be noted that the above are only specific embodiments of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions within the technical scope disclosed in the present application should be covered by the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A fixing belt, characterized in that: The fixing belt comprises a first fixing belt and a second fixing belt; The first end of the first fixing belt is used to connect to the buckle, the second end of the first fixing belt is used to connect to the device body, and the first fixing belt and the second fixing belt are detachably connected through the buckle; A receiving groove is provided on the inner side of the first fixing belt near the first end of the first fixing belt, and the receiving groove is used to receive at least a part of the clasp.

2. The fixing belt according to claim 1, characterized in that: The accommodating groove is a groove.

3. The fixing belt according to claim 1, characterized in that: The inner wall corners of the receiving groove are provided with rounded corners.

4. The fixing belt according to any one of claims 1 to 3, characterized in that: The receiving groove extends from the first end of the first fixing belt to the middle of the first fixing belt; Alternatively, the accommodating groove extends from the first end of the first fixing belt to the second end of the first fixing belt.

5. A watch strap, characterized in that: The watch strap comprises: a watch buckle and a fixing strap as claimed in any one of claims 1 to 4; The clasp comprises: a first folding piece, a second folding piece, a mounting seat and a snap assembly; The first folding member comprises a first end and a second end, and the first end of the first folding member is fixed to the mounting seat; The second folding member includes a third end and a fourth end, and the second end of the first folding member and the third end of the second folding member are rotatably connected to enable the first folding member and the second folding member to be closed or opened; the snap assembly includes a first part provided on the mounting seat, and a second part provided on the fourth end of the second folding member; when the first folding member and the second folding member are closed, the first part and the second part of the snap assembly are locked; When the first folding member and the second folding member are opened, the first part and the second part of the snap assembly are separated; The first end of the first fixing belt is rotatably connected to the mounting seat; the second fixing belt is installed on the second folding member, and when the first folding member and the second folding member are closed, the first folding member and the second folding member are located on the inner side of the first fixing belt, and the accommodating groove is used to accommodate at least part of the first folding member and the second folding member.

6. The watch strap according to claim 5, characterized in that: The first folding member includes a first arc-shaped plate, and the second folding member includes a second arc-shaped plate; the opposite ends of the first arc-shaped plate are respectively the first end of the first folding member and the second end of the first folding member, and the opposite ends of the second arc-shaped plate are respectively the third end of the second folding member and the fourth end of the second folding member; the second end of the first folding member and the third end of the second folding member are rotatably connected via a pin shaft; When the first folding member and the second folding member are closed, the first arc plate and the second arc plate are arranged along the direction of the pin shaft, and the first arc plate and the second arc plate have the same extension direction.

7. The watch strap according to claim 6, characterized in that: There are a plurality of the first arc-shaped plates, and the plurality of the first arc-shaped plates are arranged at intervals along the direction of the pin shaft. When the first folding member and the second folding member are closed, at least one of the second arc-shaped plates is located between the plurality of the first arc-shaped plates.

8. The watch strap according to any one of claims 5 to 7, characterized in that: The first part is a bayonet structure, and the second part is a buckle.

9. The watch strap according to any one of claims 5 to 7, characterized in that: The second fixing belt has a plurality of snap-in holes arranged along the extension direction of the second fixing belt; A positioning ring is provided at the fourth end of the second folding member, and the positioning ring is used to pass through the second fixing belt; A clamping portion is disposed in the middle of the second folding member, and the clamping portion is clamped in one of the clamping holes.

10. A wearable device, characterized in that: It comprises a device body and a strap as described in any one of claims 5 to 9, wherein the second end of the first fixing strap is connected to the device body, and the third end of the second fixing strap is connected to the device body.

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