Fixing strap, watch strap, and wearable device

Abstract

The present application provides a fixing strap, a watch strap (400), and a wearable device (1000). A watch clasp (100) comprises a first folding member (110), a second folding member (120), a mounting base (130), and an elastic locking assembly (140). One end of the first folding member (110) is fixed on the mounting base (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 base (130) by means of the elastic locking assembly (140). A first portion (140a) and a second portion (140b) of the elastic locking assembly (140) can be locked or separated, so that the first folding member (110) and the second folding member (120) can remain closed or opened. The fixing strap comprises a first fixing strap (200) and a second fixing strap (300), an accommodating recess (600) is provided on the inner side of the first fixing strap (200), and a part of the watch clasp (100) can be accommodated in the accommodating recess (600), thereby reducing the thickness of the overlapping part between the watch clasp (100) and the first fixing strap (200), improving wearing comfort. The watch strap (400) comprises the first fixing strap (200), the second fixing strap (300) and the watch clasp (100), and the watch clasp (100) can achieve the detachable connection between the first fixing strap (200) and the second fixing strap (300). The wearable device (1000) comprises a device main body (500) and the watch strap (400), and the first fixing strap (200) and the second fixing strap (300) are both connected to the device main body (500).

Description

A fixing band, watchband and wearable device

[0001] The present application claims priority to the Chinese Patent Application No. 202422286571.8, filed on September 18, 2024, entitled "A fixing band, watchband and wearable device", and the Chinese Patent Application No. 202422380735.3, filed on September 27, 2024, entitled "A fixing band, watchband and wearable device", both of which are incorporated herein by reference in their entirety. TECHNICAL FIELD

[0002] Embodiments of the present application relate to the technical field of wearable devices, and in particular to a fixing band, watchband and wearable device. BACKGROUND

[0003] In a wearable device (such as a watch), the two ends of the device body are respectively connected to a fixing band, and the detachable connection between the two fixing bands and the adjustment of the length of the fixing band can be achieved by a watch buckle. How to improve the comfort of users wearing the wearable device is a problem that the industry needs to face. SUMMARY

[0004] Embodiments of the present application provide a fixing band, watchband and wearable device that is comfortable to wear.

[0005] Embodiments of the present application adopt the following technical solutions:

[0006] In a first aspect, the present application provides a watch buckle, comprising: a first folding piece, a second folding piece, a mounting seat and a spring buckle assembly. The first folding piece has opposite first and second ends, and the first end is fixed to the mounting seat. The second folding piece has opposite third and fourth ends, and the second and third ends are rotatably connected to enable the first and second folding pieces to be closed or opened. The spring buckle assembly includes a first part provided on the mounting seat and a second part provided on the fourth end. When the first and second folding pieces are closed, the first and second parts of the spring buckle assembly are locked. When the first and second folding pieces are opened, the first and second parts of the spring buckle assembly are separated.

[0007] The buckle provided by the embodiment of the present application has one end of the first folding piece fixed on the mounting seat, the other end of the first folding piece and one end of the second folding piece rotationally connected, and the other end of the second folding piece and the mounting seat connected through the 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. Compared with the hard interference structure of the first buckle and the second buckle in the related art, the elastic buckle assembly has a certain elasticity, and one of the first part and the second part has a large elastic stroke or elastic deformation amount in the production and use process, so that the first part and the second part are not easy to deform and fail, and the reliability and stability of the buckle can be improved.

[0008] In an optional implementation, the first folding piece includes a first arc-shaped plate, and the second folding piece includes a second arc-shaped plate; opposite ends of the first arc-shaped plate are a first end and a second end respectively, and opposite ends of the second arc-shaped plate are a third end and a fourth end respectively. The second end and the third end are rotationally connected through a pin shaft. When the first folding piece and the second folding piece are closed, the first arc-shaped plate and the second arc-shaped plate are arranged along the direction of the pin shaft, and the extension directions of the first arc-shaped plate and the second arc-shaped plate are the same.

[0009] The closed first folding piece and the second folding piece form an arc-shaped structure and are kept between the first fixed band and the second fixed band, and have little influence on the bending shape of the first fixed band and the second fixed band. Under the same total thickness, the thickness of the first arc-shaped plate and the second arc-shaped plate can be increased, and the rigidity of the first arc-shaped plate and the second arc-shaped plate is increased and is not easy to deform under force.

[0010] In an optional implementation, the first arc-shaped plate and the second arc-shaped plate are rotationally connected through a pin shaft, and the end of the first arc-shaped plate and the end of the second arc-shaped plate are respectively provided with a connecting hole, and the pin shaft is connected to the connecting holes of the two, so that the first arc-shaped plate and the second arc-shaped plate can rotate around the pin shaft.

[0011] In an optional implementation, the first arc-shaped plate is a plurality of first arc-shaped plates, and the plurality of first arc-shaped plates are arranged at intervals along the direction of the pin shaft (i.e. the axial direction of the pin shaft), and at least one second arc-shaped plate is arranged between the plurality of first arc-shaped plates when the first folding piece and the second folding piece are closed. The rotationally connected first arc-shaped plate and the second arc-shaped plate are stable and reliable.

[0012] In an optional implementation, two first arc-shaped plates are arranged at intervals along the direction of the pin shaft, and a second arc-shaped plate is arranged between the two first arc-shaped plates. The rotationally connected first arc-shaped plate and the second arc-shaped plate are stable and reliable. The position of the elastic buckle assembly can be arranged corresponding to the fourth end of the second arc-shaped plate, or can be arranged 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 arranged in sequence along the direction of the pin shaft. The first arc-shaped plate and the second arc-shaped plate are rotatably connected stably and reliably. The position of the elastic buckle assembly can be arranged corresponding to the fourth end of one of the second arc-shaped plates or the first end of one of the first arc-shaped plates.

[0014] In an alternative implementation, when multiple elastic buckle assemblies are arranged, one elastic buckle assembly can be arranged corresponding to the fourth end of the second arc-shaped plate near the middle position, and another elastic buckle assembly can be arranged corresponding to the first end of the first arc-shaped plate near the middle position. The multiple elastic buckle assemblies can stably and reliably connect the second folding piece and the mounting seat.

[0015] In an alternative implementation, one first arc-shaped plate and one second arc-shaped plate are arranged along the direction of the pin shaft (i.e., the axial direction of the pin shaft). The first arc-shaped plate and the second arc-shaped plate are rotatably connected stably and reliably. The position of the elastic buckle assembly can be arranged corresponding to the fourth end of the second arc-shaped plate or 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. The bayonet structure and the buckle can be clamped and matched.

[0017] In an alternative implementation, the first part is a buckle, and the second part is a bayonet structure. The bayonet structure and the buckle can be clamped and matched.

[0018] In an alternative implementation, the first end of the first folding piece has a cover part fixed to the mounting seat. The cover part and the mounting seat enclose a mounting groove. The bayonet structure is arranged at the mounting groove. The cover part has an avoiding area for exposing the bayonet structure. The bayonet structure is conveniently arranged on the mounting seat. The mounting seat and the cover part can protect the bayonet structure. The cover part is fixed to the mounting seat, so that the first end of the first folding piece is fixed to the mounting seat.

[0019] In an alternative implementation, the mounting groove can be formed on the mounting seat, and the cover part covers the groove opening of the mounting groove. Alternatively, the mounting groove can be formed on the cover part, and the mounting seat covers the groove opening of the mounting groove.

[0020] In an alternative implementation, the mounting seat is a strip-shaped cuboid. The length direction of the mounting seat can be parallel to the width direction of the fixing band. The cover part can be a rectangular plate.

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

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

[0023] In an alternative implementation, the cover and the mounting base are connected by fasteners, the side of the cover facing the mounting base can be provided with an outward protruding structure, and the side of the mounting base facing the cover can be provided with an inward recessed structure, which are matched with each other. The outward protruding structure is assembled on the inward recessed structure in alignment, which can increase the effective length of the fasteners, and make the connection between the cover and the mounting base reliable, and the total thickness of the cover and the mounting base can be reduced.

[0024] In an alternative implementation, when the outward protruding structure is in the form of an outward protruding frame, the inward recessed structure is in the form of a frame-shaped slot; or, when the outward protruding structure is in the form of an outward protruding rectangle, the inward recessed structure is in the form of a rectangular slot.

[0025] In an alternative implementation, the bayonet structure can include a sliding buckle and an elastic member, the sliding buckle is movably mounted on the mounting base, and the elastic member is oppositely arranged at one end of the sliding buckle and the other end of the elastic member is oppositely arranged on the wall surface of the mounting base, and the elastic member is used to make the sliding buckle elastically stretch and retract. When the elastic member is in the stretched state, the sliding buckle is in the extended position, and the bayonet assembly is in the locked state or the separated state. When the elastic member is in the compressed state, the sliding buckle is in the retracted position, and the bayonet assembly is in the critical state. During the contact and buckling of the sliding buckle and the buckle, the elastic member can be elastically deformed, the sliding buckle can have a larger sliding stroke under the action of the elastic member, and the sliding buckle and the buckle are not easy to be deformed and failed under force, so that the reliability and stability of the bayonet are higher.

[0026] When the bayonet assembly is in the locked state, the elastic member on the mounting base is stretched to the maximum length, the stretched elastic member makes the sliding buckle extend, and the extended sliding buckle contacts and buckles with the buckle. The first folding piece and the second folding piece remain closed. When the bayonet assembly is in the separated state, i.e., the first part and the second part are separated, the elastic member on the mounting base is stretched to the maximum length, the stretched elastic member makes the sliding buckle extend, and the sliding buckle and the buckle are completely separated. The first folding piece and the second folding piece remain open. When the bayonet assembly is in the critical state, the sliding buckle and the buckle are in contact, the sliding buckle compresses the elastic member on the mounting base to store energy, and the length of the elastic member becomes smaller. By moving the buckle relative to the mounting base, the buckle and the sliding buckle can be buckled and matched or separated, and the elastic member on the mounting base can be restored to the maximum length.

[0027] In an alternative implementation, the elastic member is a spring, a spring sheet or other elastic structure.

[0028] In an alternative implementation, the sliding buckle includes a sliding part and a first buckle part, the sliding part is slidably mounted on the mounting base, the sliding part has opposite ends along its sliding direction (i.e., the moving direction of the sliding buckle), the first buckle part is connected to one end of the sliding part, and the elastic member is arranged at the other end of the sliding part. The buckle can be buckled to the first buckle part.

[0029] The elastic buckle assembly is in a separated state, and the first buckle part extends out of the cover part under the action of the elastic member. The buckle and the extended first buckle part are completely separated. When the buckle and the first buckle part need to be clamped, the buckle is pushed into the first buckle part, the buckle acts on the first buckle part to make the first buckle part retract, the elastic member is compressed and stored, and the elastic buckle assembly is in a critical state. Continue to push the buckle into the first buckle part to make the buckle and the first buckle part clamped and matched, the elastic member is stretched to release energy to make the first buckle part extend, and the elastic buckle assembly is in a locked state. During the clamping and clamping process of the buckle and the sliding buckle, the elastic member can make the sliding buckle elastically stretch and retract, the bayonet structure has a large elastic stroke, the buckle and the sliding buckle are not easy to be deformed and fail under force, and the reliability of the watch buckle is high.

[0030] In an optional implementation, in the sliding direction of the sliding part (i.e., the moving direction of the sliding buckle), the cross-sectional shape of the sliding part and the cross-sectional shape of the mounting groove of the mounting seat are matched, so that the sliding part can be slidably mounted on the mounting seat in the predetermined direction.

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

[0032] In an optional implementation, the mounting seat has a first stop wall for abutting and matching with the sliding part to limit the sliding part; the first stop wall has an opening for the first buckle part to extend out of.

[0033] In an optional implementation, the first buckle part includes a first segment and a second segment, the first segment and the second segment are in an L-shaped distribution and connected, the first segment is connected to the sliding part, and the second segment is used for clamping and matching with the buckle. The L-shaped first buckle part has better structural strength, improving the reliability of the first buckle part. Under the action of the elastic member, the sliding part abuts against the first stop wall, the first segment is located at the opening, and the second segment extends out of the opening.

[0034] In an optional implementation, the sliding buckle further includes a first limiting part connected to one end of the sliding part opposite to the first buckle part, and one end of the elastic member is mounted on the first limiting part. The reliability of the cooperation between the sliding buckle and the elastic member is improved.

[0035] In an optional 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 optional 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 optional implementation, the sliding part is provided with a plurality of elastic members, and the mounting seat is provided with a partition wall. The adjacent two elastic members are separated by the partition wall. A plurality of short elastic members are arranged side by side on the small-size mounting seat, so that the elastic force received by the sliding part is improved. The interference between the two elastic members during use is avoided.

[0038] In an optional implementation, the head of the buckle is provided with a first guide surface. During the switching of the first folding piece and the second folding piece from the open state to the closed state, the first guide surface is used for sliding contact with the first buckle part, so that the elastic buckle assembly is switched from the separated state to the critical state.

[0039] During the pressing of the elastic buckle assembly to push the buckle into the bayonet structure, the first guide surface of the head of the buckle is in sliding contact with the first buckle part, so that the first buckle part is switched from the extended position to the retracted position, and the elastic member is switched from the stretched state to the compressed state, that is, the elastic buckle assembly is switched from the separated state to the critical state, which facilitates the user to push the buckle into the bayonet structure. The first guide surface can be an arc surface.

[0040] In an optional implementation, the middle part of the buckle is provided with a second guide surface. During the switching of the first folding piece and the second folding piece from the closed state to the open state, the second guide surface is used for sliding contact with the first buckle part, so that the elastic buckle assembly is switched from the locked state to the critical state.

[0041] During the pulling of the buckle to separate the buckle from the bayonet structure, the second guide surface of the middle part of the buckle is in sliding contact with the first buckle part, so that the first buckle part is switched from the extended position to the retracted position, and the elastic member is switched from the stretched state to the compressed state, that is, the elastic buckle assembly is switched from the locked state to the critical state, which facilitates the user to separate the buckle from the bayonet structure. The second guide surface can be an arc surface.

[0042] In an optional implementation, 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 piece. The end of the head away from the columnar part is provided with a first guide surface. The side of the head facing the columnar part is provided with a second guide surface.

[0043] In an optional implementation, the bayonet structure is arranged in pairs, the first buckle parts in the pair of bayonet structures are arranged in a spaced-apart and facing manner, and the elastic expansion directions of the pair of 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 piece. When the first folding piece and the second folding piece are closed, the columnar part is located between the pair of first buckle parts, and the head abuts against the pair of first buckle parts. The same buckle and the pair of bayonet structures are connected and matched, which improves the connection reliability of the elastic buckle assembly.

[0044] In an optional implementation, the moving direction of the slide buckle, the stretching direction of the elastic member and the length direction of the mounting base are parallel. The length direction of the mounting base can be the width direction of the fixing band of the wearable device. The length direction of the mounting base is fully utilized, so that the width dimension of the mounting base can be made smaller.

[0045] In an optional implementation, the mounting base is 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 extension direction of the fixing band, and the thickness direction of the mounting base is the thickness direction of the fixing band.

[0046] In an optional implementation, the moving direction of the slide buckle and the stretching direction of the elastic member are parallel, and the moving direction of the slide buckle and the length direction of the mounting base are perpendicular.

[0047] In an optional implementation, the mounting base has a mounting hole, the slide buckle includes a key part and a second buckle part, the key part is slidably installed on the mounting base and exposed at the mounting hole, the second buckle part is connected to the key part, the elastic member is arranged on the side of the key part away from the mounting hole, and the buckle can be clamped to the second buckle part. During the clamping of the buckle and the slide buckle, the elastic member can elastically stretch and contract the slide buckle, the bayonet structure has a large elastic stroke, the buckle and the slide buckle are not easy to be deformed and fail under force, and the reliability of the watch buckle is high.

[0048] In an optional implementation, in the sliding direction of the key part (i.e., the moving direction of the slide buckle), the cross-sectional shape of the key part and the cross-sectional shape of the part of the mounting groove are matched, so that the key part can be linearly slidably installed on the mounting base in the predetermined direction.

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

[0050] In an optional implementation, the slide buckle further includes a second limiting part connected to the key part, and the mounting base has a second blocking wall for abutting and cooperating with the second limiting part to limit the key part. The position of the key part is limited to prevent the key part from being separated from the mounting base.

[0051] In an optional implementation, the second limiting part can be an external convex structure arranged on the key part, and the external convex structure abuts and cooperates with the second blocking wall.

[0052] In an optional implementation, the side of the key part away from the mounting hole has a receiving groove, and the elastic member is at least partially arranged in the receiving groove. The space occupied by the elastic member on the mounting base is reduced, and one end of the elastic member is conveniently positioned and installed on the key part.

[0053] In an alternative implementation, the head of the clasp has a third guide surface, which is used to slide with the second clasp during the process of switching the first and second folding pieces from open to closed, so as to switch the elastic clasp assembly from the separated state to the critical state.

[0054] During the process of pressing the elastic clasp assembly to push the clasp into the bayonet structure, the third guide surface of the head of the clasp slides with the second clasp, so as to switch the second clasp from the extended position to the retracted position, and switch the elastic member from the stretched state to the compressed state, i.e. switch the elastic clasp assembly from the separated state to the critical state, which facilitates the user to push the clasp into the bayonet structure. The third guide surface can be an inclined surface or an arc surface.

[0055] In an alternative implementation, the moving direction of the sliding clasp member is parallel to the stretching direction of the elastic member, and the moving direction of the sliding clasp member is perpendicular to the length direction of the mounting seat. The length direction of the mounting seat is fully utilized to make the key part of the sliding clasp member longer, which facilitates the user to press the key part.

[0056] In an alternative implementation, the mounting seat is 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 extension direction of the fixing band, and the thickness direction of the mounting seat is the thickness direction of the fixing band.

[0057] In an alternative implementation, the moving direction of the sliding clasp member is parallel to the stretching direction of the elastic member, and the moving direction of the sliding clasp member is parallel to the length direction of the mounting seat.

[0058] In an alternative implementation, the bayonet structure can include an elastically deformable bending spring, which has a clamping groove with a variable opening width. When the elastic clasp assembly is in the locked state or the separated state, the opening width of the clamping groove is a first width. When the elastic clasp assembly is in the critical state, the opening width of the clamping groove is a second width; the first width is smaller than the second width.

[0059] During the process of the bending spring contacting and clamping the clasp, the bending spring can be deformed, and the bending spring can have a large elastic deformation amount, so that neither the bending spring nor the clasp is prone to deformation failure under force, which makes the clasp have high reliability and stability.

[0060] In an alternative implementation, the bent elastic sheet comprises 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, second and third transverse arms are in the same plane and are arranged on the mounting base, the first and second inclined arms are arranged in parallel, the third and fourth inclined arms are arranged in parallel, the second and third inclined arms are arranged in a spaced manner, and a clamping groove is formed between the second and third inclined arms. When the elastic buckle assembly is in the locked state, the clamping buckle is located between the second and third inclined arms, and the second and third inclined arms are arranged on opposite sides of the clamping buckle.

[0061] In the initial state of the bent elastic sheet, the second, third and second transverse arms are arranged in a substantially triangular shape, the second inclined arm is arranged in a spaced manner close to the end of the second transverse arm away from the second transverse arm, and the end of the third inclined arm away from the second transverse arm, and the width of the mouth of the clamping groove is small. When the clamping buckle is just pushed into the clamping groove of the bent elastic sheet, the clamping buckle acts on the second and third inclined arms, so that the second and third inclined arms are opened to both sides, the second inclined arm moves with the first inclined arm, and the fourth inclined arm moves with the third inclined arm, and the width of the mouth of the clamping groove is large. When the clamping buckle is completely pushed into the clamping groove of the bent elastic sheet, the clamping buckle is limited by the second and third inclined arms, and the locking of the clamping buckle and the bent elastic sheet is achieved.

[0062] In an alternative implementation, the mounting base is provided with a cover portion, and the cover portion has a clearance area, the clamping groove of the bent elastic sheet is arranged corresponding to the clearance area of the cover portion, the first and second inclined arms are located on one side edge of the clearance area, and the third and fourth inclined arms are located on the other side edge of the clearance area. The first and third transverse arms are limited by the cover portion.

[0063] In an alternative implementation, a round corner can be arranged between the first and second inclined arms, and a round corner can be arranged between the third and fourth inclined arms, which facilitates the sliding contact between the head of the clamping buckle and the round corner area, and enables the head of the clamping buckle to be clamped and matched with the clamping groove of the bent elastic sheet.

[0064] In an alternative implementation, the bent elastic sheet comprises a sheet portion, a first cantilever and a second cantilever, the sheet portion is arranged on the mounting base, one end of the first cantilever is connected to the sheet portion, one end of the second cantilever is connected to the sheet portion, the first and second cantilevers are arranged in a spaced manner, and a clamping groove is formed between the first and second cantilevers. When the elastic buckle assembly is in the locked state, the clamping buckle is located between the first and second cantilevers, and the first and second cantilevers are arranged on opposite sides of the clamping buckle.

[0065] In the initial state of the bent elastic piece, the first cantilever and the second cantilever form a clamping groove with a large lower part and a small upper part, the free end of the first cantilever and the free end of the second cantilever are arranged in close proximity, and the mouth width of the clamping groove is small. When the buckle is just pushed into the clamping groove of the bent elastic piece, the buckle acts on the first cantilever and the second cantilever, so that the first cantilever and the second cantilever are spread to both sides, and the mouth width of the clamping groove is large. When the buckle is completely pushed into the clamping groove of the bent elastic piece, the buckle is limited by the first cantilever and the second cantilever, and the locking of the buckle and the bent elastic piece is realized.

[0066] In an optional implementation, the above-mentioned two kinds of clamping structure of the bent elastic piece form, the buckle includes a columnar part and a head part, the head part 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 piece; in the direction of the mouth width of the clamping groove, the width of the head part is greater than the width of the columnar part, and the width of the head part is greater than the first width. The buckle with the columnar part and the head part is easy to form, and the buckle can be matched with the bent elastic piece.

[0067] In an optional implementation, the above-mentioned two kinds of clamping structure of the bent elastic piece form, the head part has a fourth guide surface on the side away from the columnar part, and the fourth guide surface is used for sliding contact with the bent elastic piece in the process of switching the first folding piece and the second folding piece from opening to closing, so as to switch the elastic buckle assembly from the separated state to the critical state.

[0068] In the process of pressing the elastic buckle assembly to push the buckle into the bent elastic piece, the fourth guide surface of the buckle head part and the bent elastic piece are in sliding contact, which can make the width of the clamping groove of the bent elastic piece larger, that is, the elastic buckle assembly is switched from the separated state to the critical state, which facilitates the user to push the buckle into the bent elastic piece. The fourth guide surface can be an arc surface.

[0069] In an optional implementation, the above-mentioned two kinds of clamping structure of the bent elastic piece form, the head part has a fifth guide surface near the columnar part, and the fifth guide surface is used for sliding contact with the bent elastic piece in the process of switching the first folding piece and the second folding piece from closing to opening, so as to switch the clamping structure from the locked state to the critical state.

[0070] In the process of pulling the buckle to separate the buckle from the bent elastic piece, the fifth guide surface of the buckle head part and the bent elastic piece are in sliding contact, which can make the width of the clamping groove of the bent elastic piece larger, that is, the elastic buckle assembly is switched from the locked state to the critical state, which facilitates the user to separate the buckle from the bent elastic piece. The fifth guide surface can be an arc surface.

[0071] In an optional implementation, the fourth end of the second folding piece has a positioning ring for the fixing band to pass through, and the middle part of the second folding piece has a clamping part for clamping and matching with the clamping hole of the fixing band. The fixing band is limited on the second folding piece, and the use length of the fixing band is limited.

[0072] In an optional implementation, the first part provided on the mounting base is a buckle, and the second part provided on the fourth end of the second folding piece is a bayonet structure, and the bayonet structure and the buckle can be engaged. The fourth end of the second folding piece serves as a carrier of the bayonet structure, and can be provided with a structure adapted to the bayonet structure, for example, the fourth end of the second folding piece is provided with a mounting groove, and the bayonet structure is arranged at the mounting groove.

[0073] In an optional implementation, the bayonet structure can be in an elastic extension mode, so as to reduce the stress deformation failure of the buckle and the bayonet structure. The bayonet structure can include a sliding buckle and an elastic piece. The sliding buckle is movably arranged on the fourth end of the second folding piece. The elastic piece is arranged opposite to the sliding buckle at one end, and opposite to the wall surface of the fourth end of the second folding piece at the other end. The elastic piece is used to make the sliding buckle elastically extend. The elastic piece is in an extension state, the sliding buckle is in an extended position, and the elastic buckle assembly is in a locked state or a separated state. The elastic piece is in a compression state, the sliding buckle is in a retracted position, and the elastic buckle assembly is in a critical state.

[0074] In the process of contact engagement between the sliding buckle and the buckle, the sliding buckle can have a large sliding stroke under the action of the elastic piece, and neither the sliding buckle nor the buckle is prone to stress deformation failure, so that the reliability and stability of the watch buckle are high.

[0075] In an optional implementation, the sliding buckle includes a sliding part and a first buckle part. The sliding part is slidably arranged on the fourth end of the second folding piece. The sliding part has opposite ends along the sliding direction. The first buckle part is connected to one end of the sliding part. The elastic piece is arranged at the other end of the sliding part. The buckle can be engaged with the first buckle part. The sliding buckle and the elastic piece cooperate, and in the process of contact engagement between the buckle and the sliding buckle, the elastic piece can make the sliding buckle elastically extend, and the buckle and the sliding buckle are not prone to stress deformation failure, so that the reliability of the watch buckle is high.

[0076] In a second aspect, the embodiments of the present application provide a watch buckle, including: a first folding piece, a second folding piece, a mounting base, and a connecting assembly. The first folding piece has opposite first and second ends, and the first end is fixed to the mounting base. The second folding piece has opposite third and fourth ends, and the second and third ends are rotationally connected, so that the first and second folding pieces can be closed or opened. The connecting assembly is used to detachably connect the mounting base and the fourth end. When the first and second folding pieces are closed, the mounting base and the fourth end are connected. When the first and second folding pieces are opened, the mounting base and the fourth end are separated.

[0077] The watch buckle provided by the embodiments of the present application has one end of the first folding piece fixed on the mounting seat, the other end of the first folding piece and one end of the second folding piece rotationally connected, and the other end of the second folding piece and the mounting seat connected through the connecting assembly. The watch buckle can adjust the use length of the fixing band to adapt to the wrist of the user, and connect the first fixing band and the second fixing band, so that the wearable device is bound on the wrist of the user. When the wearable device is not used, the watch buckle can be unlocked to release the first fixing band and the second fixing band, so that the wearable device is released.

[0078] In an optional implementation, the connecting assembly is a magnetic attraction assembly, the magnetic attraction assembly includes a first magnetic piece arranged on the mounting seat and a second magnetic piece arranged on the fourth end. The first magnetic piece and the second magnetic piece can be magnetically attracted. One of the first magnetic piece and the second magnetic piece is a magnet, and the other is a magnetic conductive piece. When the first folding piece and the second folding piece are closed, the first magnetic piece and the second magnetic piece are magnetically attracted. When the first folding piece and the second folding piece are opened, the first magnetic piece and the second magnetic piece are separated.

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

[0080] In an optional implementation, the fixing band can include a first fixing band and a second fixing band, a first end of the first fixing band is used to connect the watch buckle, a second end of the first fixing band is used to connect a device main body, the first fixing band and the second fixing band are detachably connected through the watch buckle, and the containing groove can be arranged close to the first end of the first fixing band and used to contain at least part of the watch buckle.

[0081] In an optional implementation, the containing groove can be a groove arranged on the inner side of the first fixing band and used to contain the folding pieces (such as the first folding piece and the second folding piece), so that the folding pieces can be sunk into the groove of the containing groove. When the user wears the watch buckle, the folding pieces can be contained in the first fixing band, the thickness of the overlapping part of the folding pieces and the watch band is reduced, the wearing comfort is improved, the appearance is thinner, and the appearance is more beautiful.

[0082] In an optional implementation, the inner wall corner of the containing groove is provided with a round corner.

[0083] In an optional implementation, the containing groove extends from the first end of the first fixing band to the middle part of the first fixing band.

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

[0085] In an optional implementation, the inner side of the second fixed band is used to mount the airbag, the second fixed band has fixed nail holes and sliding nail holes, the fixed nail holes and the sliding nail holes are arranged at intervals along the extension direction of the second fixed band, the fixed nail holes are used to be buckled with the first protruding nails of the airbag, and the sliding nail holes are used to be slidably connected with the second protruding nails of the airbag.

[0086] In a fourth aspect, the embodiments of the present application provide a watchband, which comprises a first fixed band, a second fixed band, and the watch buckle. One end of the first fixed band (i.e., the first end of the first fixed band) is rotationally connected with the mounting seat. The second fixed band is detachably mounted on the second folding piece. When the second fixed band is mounted on the second folding piece and the first folding piece and the second folding piece are closed, the first folding piece and the second folding piece can be located on the inner side of the first fixed band, or the first folding piece and the second folding piece can be located on the inner side of the second fixed band. The accommodation groove is used to accommodate at least part of the first folding piece and the second folding piece.

[0087] The watchband provided by the embodiments of the present application can realize detachable connection between the first fixed band and the second fixed band through the watch buckle. The mounting seat of the watch buckle is connected with one end of the first fixed band. When the second fixed band is mounted on the second folding piece and the first folding piece and the second folding piece are kept closed through the elastic buckle assembly, the first folding piece and the second folding piece are located on the inner side of the first fixed band or the inner side of the second fixed band, so as to connect the first fixed band and the second fixed band and limit the use length of the fixed band. When the second fixed band is detached from the second folding piece, the first fixed band and the second fixed band are separated.

[0088] In an optional implementation, an ear can be arranged between one end of the first fixed band and the mounting seat, so that the mounting seat is rotationally connected on the first fixed band. The mounting seat has a connecting ear, the ear is arranged on the first fixed band, the end of the ear is connected with the connecting ear, and the mounting seat is rotationally connected on the first fixed band.

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

[0090] In an optional implementation, the first fixed band has a plurality of clamping holes arranged along the extension direction of the first fixed band, and the second fixed band has a plurality of clamping holes arranged along the extension direction of the second fixed band. The plurality of clamping holes can realize the air permeation effect and improve the use experience of the wearable device.

[0091] In an optional implementation, the mounting base of the clasp is connected to one end of the first fixing band, and the first folding piece and the second folding piece of the clasp are located on the inner side of the mounting base. When the first fixing band and the second fixing band are connected through the clasp, the first folding piece and the second folding piece are closed and located on the inner side of the first fixing band, and the free end of the second fixing band is located on the inner side of the first fixing band. This scheme is simple in structure, does not need to set a limiting ring on the first watch band, and enables the free end of the second fixing band to pass through the limiting ring.

[0092] In an optional implementation, the mounting base of the clasp is connected to one end of the first fixing band, and the first folding piece and the second folding piece of the clasp are located on the inner side of the mounting base. When the first fixing band and the second fixing band are connected through the clasp, the first folding piece and the second folding piece are closed and located on the inner side of the first fixing band, and the free end of the second fixing band is located on the inner side of the first fixing band. This scheme is simple in structure, does not need to set a limiting ring on the first watch band, and enables the free end of the second fixing band to pass through the limiting ring.

[0093] In a fifth aspect, the embodiments of the present application provide a wearable device, which comprises a device main body and the watch band described above, and one end of the first fixing band (i.e., the second end of the first fixing band) is connected to the device main body, and one end of the second fixing band (i.e., the third end of the second fixing band) is connected to the device main body.

[0094] The wearable device provided by the embodiments of the present application can adjust the use length of the fixing band through the clasp to adapt to the wrist of a user when the wearable device is used, and connect the first fixing band and the second fixing band to enable the wearable device to be bound on the wrist of the user. When the wearable device is not used, the clasp can be unlocked to loosen the first fixing band and the second fixing band, so as to realize the loosening of the wearable device.

[0095] In an optional implementation, the wearable device further comprises a detection module for detecting a physiological index of a user, which can be arranged on the device main body or the watch band. The detection module can be a blood pressure detection module, an optical plethysmography sensor, an electrocardiogram sensor, etc. BRIEF DESCRIPTION OF DRAWINGS

[0096] FIG. 1 is a structural schematic diagram of a wearable device provided by the embodiments of the present application;

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

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

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

[0100] Fig. 5 is a structural schematic view of the wearing device of Fig. 4 when the first watchband and the second watchband are connected;

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

[0102] Fig. 7 is another perspective exploded view of the watch buckle of Fig. 6;

[0103] Fig. 8 is an assembly view of a mounting seat and a bayonet structure in the watch buckle of Fig. 6;

[0104] Fig. 9 is an assembly view of mounting a first folding piece on the mounting seat of Fig. 8;

[0105] Fig. 10 is an assembly view of the watch buckle of Fig. 6 when the first folding piece and the second folding piece are closed;

[0106] Fig. 11 is another perspective assembly view of the watch buckle of Fig. 10;

[0107] Fig. 12 is a structural schematic view of the watch buckle of Fig. 10 when the first folding piece and the second folding piece are opened;

[0108] Fig. 13 is an assembly view of a watch buckle provided by another embodiment of the present application when the first folding piece and the second folding piece are closed;

[0109] Fig. 14 is an assembly view of a watch buckle provided by another embodiment of the present application when the first folding piece and the second folding piece are closed;

[0110] Fig. 15 is a sectional view of the watch buckle of Fig. 11 along line A-A, the first folding piece and the second folding piece being closed, and the clasp assembly being in a locked state;

[0111] Fig. 16 is a sectional view of the watch buckle of Fig. 12 along line B-B, the first folding piece and the second folding piece being opened, and the clasp assembly being in a locked state;

[0112] Fig. 17 is a sectional view of the watch buckle of Fig. 11 when the clasp assembly is in a critical state;

[0113] Fig. 18 is an exploded view of a watch buckle provided by another embodiment of the present application;

[0114] Fig. 19 is an assembly view of a mounting seat and a bayonet structure in the watch buckle of Fig. 18;

[0115] Fig. 20 is an assembly view of mounting a first folding piece on the mounting seat of Fig. 19;

[0116] Fig. 21 is an assembly view of the watch buckle of Fig. 18 when the first folding piece and the second folding piece are closed;

[0117] Fig. 22 is another perspective assembly view of the watch buckle of Fig. 21;

[0118] Fig. 23 is a structural schematic view of the watch buckle of Fig. 21 when the first and second folding pieces are opened;

[0119] Fig. 24 is a partial sectional view of the watch buckle of Fig. 22 along line C-C, the first and second folding pieces being closed, and the elastic buckle assembly being in the locked state;

[0120] Fig. 25 is a partial sectional view of the watch buckle of Fig. 23 along line D-D, the first and second folding pieces being opened, and the elastic buckle assembly being in the locked state;

[0121] Fig. 26 is a partial sectional view of the watch buckle of Fig. 22 when the elastic buckle assembly is in the critical state;

[0122] Fig. 27 is an exploded view of a watch buckle according to another embodiment of the present application;

[0123] Figs. 28(a) to (d) are structural schematic views of a bending elastic piece in an elastic buckle assembly of the watch buckle of Fig. 27, the elastic buckle assembly being in the locked state, the elastic buckle assembly being in the separated state, and the elastic buckle assembly being in the critical state, respectively;

[0124] Fig. 29 is an assembly view of a mounting seat and the bending elastic piece in the watch buckle of Fig. 27;

[0125] Fig. 30 is an assembly view of mounting the first folding piece on the mounting seat of Fig. 29;

[0126] Fig. 31 is an assembly view of the watch buckle of Fig. 27 when the first and second folding pieces are closed;

[0127] Fig. 32 is another perspective assembly view of the watch buckle of Fig. 31;

[0128] Fig. 33 is a structural schematic view of the watch buckle of Fig. 31 when the first and second folding pieces are opened;

[0129] Fig. 34 is a sectional view of the watch buckle of Fig. 32 along line E-E, the first and second folding pieces being closed, and the elastic buckle assembly being in the locked state;

[0130] Fig. 35 is an exploded view of a watch buckle according to another embodiment of the present application;

[0131] Figs. 36(a) to (d) are structural schematic views of a bending elastic piece in an elastic buckle assembly of the watch buckle of Fig. 35, the elastic buckle assembly being in the locked state, the elastic buckle assembly being in the separated state, and the elastic buckle assembly being in the critical state, respectively;

[0132] Fig. 37 is an assembly view of a mounting seat and the bending elastic piece in the watch buckle of Fig. 35;

[0133] Fig. 38 is an assembly view of mounting the first folding piece on the mounting seat of Fig. 37;

[0134] Figure 39 is an assembled view of the watch buckle of Figure 35 with the first and second folding pieces closed;

[0135] Figure 40 is another perspective assembled view of the watch buckle of Figure 39;

[0136] Figure 41 is a structural schematic view of the watch buckle of Figure 39 with the first and second folding pieces open;

[0137] Figure 42 is a cross-sectional view of the watch buckle of Figure 40 along line F-F, with the first and second folding pieces closed and the clasp assembly in the locked state;

[0138] Figures 43-46 are structural schematic views of a watch band;

[0139] Figures 47-48 are structural schematic views of a first fixed band;

[0140] Figures 49-50 are partial cross-sectional views of the first fixed band;

[0141] Figures 51-52 are partial cross-sectional views of the first fixed band;

[0142] Figures 53-54 are structural schematic views of the first fixed band and the watch buckle in the watch band;

[0143] Figures 55-56 are schematic views of a wearable device.

[0144] Explanation of reference signs: 100 - watch buckle; 110 - first folding piece; 110a - first end of first folding piece; 110b - second end of first folding piece; 111 - first arc-shaped plate; 112 - pin shaft; 112a - axial direction of pin shaft; 113 - cover part; 1131 - avoiding area; 1132 - outward protruding structure; 120 - second folding piece; 120a - third end of second folding piece; 120b - fourth end of second folding piece; 121 - buckle; 121a - first guide surface; 121b - second guide surface; 121c - third guide surface; 121d - fourth guide surface; 121e - fifth guide surface; 1211 - columnar part; 1211a - width of columnar part; 1212 - head part; 1212a - width of head part; 122 - second arc-shaped plate; 123 - positioning ring; 124 - clamping part; 130 - mounting seat; 130a - length direction of mounting seat; 131 - mounting groove; 132 - slot; 133 - first blocking wall; 134 - opening; 135 - partition wall; 136 - mounting hole; 137 - second blocking wall; 138 - connecting lug; 139 - inward recessed structure; 140 - elastic buckle assembly; 140a - first part; 140b - second part; 140c - clamping structure; 141 - sliding buckle piece; 141a - moving direction of sliding buckle piece; 1411 - sliding part; 1412 - first buckling part; 1413 - first limiting part; 1414 - button part; 1415 - accommodating groove; 1416 - second buckling part; 1417 - second limiting part; 142 - elastic piece; 143 - bent elastic sheet; 1431 - clamping groove; 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 - sheet part; 143i - first cantilever arm; 143j - second cantilever arm; 200 - first fixing band; 200a - limiting ring; 200b - first end of first fixing band; 200c - second end of first fixing band; 201 - clamping hole; 300 - second fixing band; 300a - free end; 300b - third end of second fixing band; 301 - clamping hole; 302 - fixing nail hole; 303 - sliding nail hole; 400 - watch band; 500 - device main body; 600 - accommodating groove; 601 - inner wall; 602 - round corner; 700 - air bag; 701 - first protruding nail; 702 - second protruding nail; 1000 - wearable device. DETAILED DESCRIPTION

[0145] In order to make the technical problems, technical solutions and beneficial effects of the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely intended to explain the present application and are not intended to limit the present application. Although the description of the present application will be introduced in combination with some embodiments, this does not mean that the features of the present application are limited to the embodiments. On the contrary, the purpose of introducing the embodiments in combination with the present application is to cover other options or modifications that can 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 confusion or obscure the focus of the present application, some specific details will be omitted in the description. It should be noted that the embodiments and features in the embodiments in the present application can be combined with each other without conflict.

[0146] It should be noted that when an element is referred to as being "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 being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0147] It should be understood that in the description of the embodiments of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting" should be understood in a broad sense, for example, "connecting" can be detachably connected, or can be non-detachably connected; can be directly connected, or can be indirectly connected through an intermediate medium. The orientations or positional relationships indicated by the terms "length", "width", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. are based on the orientations or positional relationships shown in the drawings, and are only intended to facilitate the description of the present application and simplify the description, and are not intended to indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0148] In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "plurality" is two or more, unless otherwise explicitly specified and limited.

[0149] In the embodiments of the present application, "and / or" is only used to describe the relationship between the associated objects, and means that there can be three relationships, for example, A and / or B can mean that there are three cases of A alone, A and B together, and B alone. In addition, the character " / " in this paper generally means that the front and rear associated objects are an "or" relationship.

[0150] In this specification, reference to "one embodiment" or "some embodiments" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the application. The appearances of the phrases "in one embodiment", "in some embodiments", "in other embodiments", "in additional embodiments" and so on, in various places in the specification are not necessarily all referring to the same embodiment, unless otherwise specifically stated. The terms "comprising", "including", "having" and their variants mean "including but not limited to", unless otherwise specifically indicated.

[0151] In the related art wearable device, two ends of the device body are respectively connected with a fixing band, and the two fixing bands can be connected and detached through a buckle. The buckle can include two folding pieces, the two folding pieces are rotationally connected so that the two folding pieces can be closed or opened, and the two folding pieces are clamped through a first buckle and a second buckle. One of the folding pieces is provided with the first buckle, and the other folding piece is provided with the second buckle. The first buckle and the second buckle belong to a hard interference structure, and the elastic deformation amount of the two is relatively small when the first buckle and the second buckle are buckled and assembled. In the production process, it is difficult to adjust the buckle, and the production cost is high. In the use process, the first buckle and the second buckle are prone to deformation failure and difficult to repair.

[0152] Referring to FIGS. 1-5, the embodiments of the present application provide a wearable device 1000, which includes a device body 500 and a watchband 400. The watchband 400 includes a first fixing band 200, a second fixing band 300 and a buckle 100. One end of the first fixing band 200 is connected with the device body 500, one end of the second fixing band 300 is connected with the device body 500, and the buckle 100 is arranged on the first fixing band 200. The buckle 100 is used to detachably connect the first fixing band 200 and the second fixing band 300.

[0153] The wearable device 1000 can be a watch, a bracelet, etc. When the wearable device 1000 is a watch, the device body 500 is a watch dial, and opposite ends of the watch dial are respectively connected with the first fixing band 200 and the second fixing band 300. The watch dial can include a housing and a display screen arranged on the housing.

[0154] In use of the wearable device 1000, the length of the fixing band can be adjusted by the clasp 100 to adapt to the wrist of the user, and the first fixing band 200 and the second fixing band 300 are connected to bind the wearable device 1000 on the wrist of the user. In non-use of the wearable device 1000, the clasp 100 can be unlocked to release the first fixing band 200 and the second fixing band 300, so as to release the wearable device 1000.

[0155] In some embodiments, a detection module for detecting physiological indicators of the user is further included, which can be arranged on the device body 500 or the watchband 400. The detection module can be a blood pressure detection module, an optical plethysmography sensor, an electrocardiogram sensor, etc.

[0156] The blood pressure detection module can include an air bag and a pressure sensor. In use, the air bag is arranged outside the wrist, and gradually inflated. When the internal pressure of the air bag reaches a threshold value, the air bag will block the blood flow of the wrist artery. Then, the air bag is gradually deflated, and the pressure sensor continuously detects the internal pressure of the air bag. The blood pressure can be obtained from the obtained pressure signal. The air bag in the blood pressure detection module can be arranged on the inner side of the watchband 400. When the wearable device 1000 is bound on the wrist of the user, the air bag is located outside the wrist.

[0157] The optical plethysmography (PPG) sensor utilizes a photoelectric sensor to detect the reflected light intensity after being absorbed by the blood and tissues of the human body, and records the changes of the blood vessel volume in the cardiac cycle. The heart rate and blood oxygen can be obtained from the obtained pulse waveform. The optical plethysmography sensor can be arranged on the back of the device body 500.

[0158] The electrocardiogram (ECG) sensor utilizes an electrode in contact with the skin of the human body to record the timing and intensity of the electrical signals causing the heart to beat. The electrocardiogram sensor can be arranged on the back of the device body 500.

[0159] Referring to FIGS. 6-10, an embodiment of the present application provides a watch buckle 100, which includes a first folding piece 110, a second folding piece 120, a mounting base 130, and a connecting assembly. The first folding piece 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 piece 120 has opposite third and fourth ends 120a and 120b, and the second end 110b is rotatably connected to the third end 120a so that the first and second folding pieces 110 and 120 can be closed or opened. The connecting assembly is used to detachably connect the mounting base 130 and the fourth end 120b. In combination with FIG. 11, when the first and second folding pieces 110 and 120 are closed, the mounting base 130 and the fourth end 120b are connected. In combination with FIG. 12, when the first and second folding pieces 110 and 120 are opened, the mounting base 130 and the fourth end 120b are separated.

[0160] In setting the connecting assembly, the connecting assembly can be a magnetic assembly, a snap assembly 140, or the like. For example, the connecting assembly is a magnetic assembly, which includes a first magnetic member arranged on the mounting base 130 and a second magnetic member arranged on the fourth end 120b. The first and second magnetic members can be magnetically attracted. One of the first and second magnetic members is a magnet, and the other is a magnetic conductive member (e.g., stainless steel, silicon steel). When the first and second folding pieces 110 and 120 are closed, the first and second magnetic members are magnetically engaged. When the first and second folding pieces 110 and 120 are opened, the first and second magnetic members are separated.

[0161] Referring to FIGS. 6-10, an embodiment of the present application provides a watch buckle 100, which includes a first folding piece 110, a second folding piece 120, a mounting base 130, and a snap assembly 140. The first folding piece 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 piece 120 has opposite third and fourth ends 120a and 120b, and the second end 110b is rotatably connected to the third end 120a so that the first and second folding pieces 110 and 120 can be closed or opened. The snap assembly 140 includes a first portion 140a arranged on the mounting base 130 and a second portion 140b arranged on the fourth end 120b. In combination with FIGS. 10 and 11, when the first and second folding pieces 110 and 120 are closed, the first and second portions 140a and 140b of the snap assembly 140 are locked. In combination with FIG. 12, when the first and second folding pieces 110 and 120 are opened, the first and second portions 140a and 140b of the snap assembly 140 are separated.

[0162] The second end 110b of the first folding piece 110 and the third end 120a of the second folding piece 120 are rotationally connected, and the first folding piece 110 and the second folding piece 120 form a butterfly buckle, and the first folding piece 110 and the second folding piece 120 can be closed or opened. The closing of the first folding piece 110 and the second folding piece 120 means that the two are close to each other, and the included angle between the two can be 0° or close to 0°. The opening of the first folding piece 110 and the second folding piece 120 means that the two are away from each other, and a certain included angle is formed between the two.

[0163] The first part 140a and the second part 140b in the elastic buckle assembly 140 can be locked or separated. When the first part 140a and the second part 140b are locked, the first folding piece 110 and the second folding piece 120 remain closed and cannot be rotated. When the first part 140a and the second part 140b are separated, the first folding piece 110 and the second folding piece 120 can be relatively rotated to change the included angle between the two.

[0164] The first end of the first folding piece 110 is fixed on the mounting seat 130, the other end of the first folding piece 110 and one end of the second folding piece 120 are rotationally connected, and the other end of the second folding piece 120 and the mounting seat 130 are connected through the elastic buckle assembly 140. The first part 140a and the second part 140b in the elastic buckle assembly 140 can be locked or separated, so that the first folding piece 110 and the second folding piece 120 can remain closed or opened. Compared with the hard interference structure of the first buckle and the second buckle in the related art, the elastic buckle assembly 140 in this embodiment has a certain elasticity. In 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 watch buckle 100.

[0165] Referring to FIGS. 1-5, the embodiment of the present application provides a watch strap 400, which includes a first fixed strap 200, a second fixed strap 300, and a watch buckle 100. One end of the first fixed strap 200 (i.e., the first end 200b of the first fixed strap 200) is rotationally connected with the mounting seat 130. The second fixed strap 300 is detachably mounted on the second folding piece 120. When the second fixed strap 300 is mounted on the second folding piece 120 and the first folding piece 110 and the second folding piece 120 are closed, the first folding piece 110 and the second folding piece 120 can be located on the inner side of the first fixed strap 200 (as shown in FIG. 3), or the first folding piece 110 and the second folding piece 120 can be located on the inner side of the second fixed strap 300 (as shown in FIG. 5).

[0166] 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.

[0167] The first fixing band 200 can be provided with an ear at one end thereof, and the mounting seat 130 is rotatably connected to the first fixing band 200. The mounting seat 130 is provided with a connecting ear 138, so that the ear can be arranged on the first fixing band 200, and the end of the ear is connected to the connecting ear 138, thereby achieving the rotatable connection of the mounting seat 130 to the first fixing band 200.

[0168] The watchband 400 provided by the embodiment of the present application can achieve 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 mounted on the second folding piece 120, the first folding piece 110 and the second folding piece 120 are kept closed by the elastic buckle assembly 140, and the first folding piece 110 and the second folding piece 120 are located on the inner side of the first fixing band 200 or the inner side of the second fixing band 300, so as to connect the first fixing band 200 and the second fixing band 300 and limit the use length of the fixing band. When the second fixing band 300 is detached from the second folding piece 120, the first fixing band 200 and the second fixing band 300 are separated.

[0169] When the watchband 400 is applied to the wearable device 1000, one end of the first fixing band 200 (i.e., the second end 200c of the first fixing band 200) away from the mounting seat 130 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 on the wrist of the user, thereby achieving the wearing of the wearable device 1000.

[0170] In order to limit the middle part of the second fixing band 300 on the second folding piece 120 and limit the use length of the fixing band, in some embodiments, referring to FIGS. 1, 6, 7 and 10, the fourth end 120b of the second folding piece 120 is provided with a positioning ring 123 for the fixing band to pass through, and the middle part of the second folding piece 120 is provided with a clamping part 124 for clamping cooperation with the clamping hole 301 of the fixing band.

[0171] The second fixing band 300 is provided with a plurality of clamping holes 301 arranged along the extension 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 part 124 can be clamped in one of the clamping holes 301.

[0172] In use of the wearable device 1000, the first folding piece 110 and the second folding piece 120 are opened, the free end 300a of the second fixing band 300 is first threaded through the positioning ring 123 of the second folding piece 120, the middle part of the second fixing band 300 is limited on the second folding piece 120 along the thickness direction thereof, and the second fixing band 300 is movable relative to the positioning ring 123. Then one of the clamping holes 301 of the second fixing band 300 and the clamping part 124 are clamped, the use length of the fixing band is limited to match the wrist size of the user. Finally, the snap assembly 140 is locked, the first folding piece 110 and the second folding piece 120 are kept closed, the connection of the first fixing band 200 and the second fixing band 300 is realized, and the wearable device 1000 is bound on the wrist of the user through the first fixing band 200 and the second fixing band 300.

[0173] In order to detach the wearable device 1000 from the wrist of the user, the snap assembly 140 is first detached, the first folding piece 110 and the second folding piece 120 are switched from closed to opened, and the wearable device 1000 can be detached from the wrist of the user. In order to separate the first fixing band 200 and the second fixing band 300, the clamping part 124 is separated from the clamping hole 301 of the second fixing band 300, and then the second fixing band 300 is separated from the positioning ring 123, so that the first fixing band 200 and the second fixing band 300 are separated.

[0174] In order to improve the air permeability of the fixing bands and realize the consistent appearance of the two fixing bands, in some embodiments, referring to FIG. 1, the first fixing band 200 has a plurality of clamping holes 201 arranged along the extension direction of the first fixing band 200, and the second fixing band 300 has a plurality of clamping holes 301 arranged along the extension direction of the second fixing band 300. The air permeability can be realized through the plurality of clamping holes, and the use experience of the wearable device 1000 is improved. The two fixing bands have similar clamping holes, so that the two fixing bands have similar appearances.

[0175] In the setting of 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.

[0176] The first fixed band 200, the second fixed band 300 and the clasp 100 are implemented in the following manner: referring to FIG. 1 and FIG. 2, the mounting base 130 of the clasp 100 is connected to one end of the first fixed band 200, and the first folding piece 110 and the second folding piece 120 of the clasp 100 are located on the inner side of the mounting base 130. The inner side of the mounting base 130 is the side of the mounting base 130 that faces the wrist when the wearable device 1000 is worn. In combination with FIG. 3, when the first fixed band 200 and the second fixed band 300 are connected through the clasp 100, the first folding piece 110 and the second folding piece 120 are closed and located on the inner side of the first fixed band 200, and the free end 300a of the second fixed band 300 is located on the inner side of the first fixed band 200. This scheme has a simple structure, does not require a limiting ring to be arranged on the first band 400, and enables the free end 300a of the second fixed band 300 to pass through the limiting ring.

[0177] The first fixed band 200, the second fixed band 300 and the clasp 100 are implemented in the following manner: referring to FIG. 4, the mounting base 130 of the clasp 100 is connected to one end of the first fixed band 200, and the first folding piece 110 and the second folding piece 120 of the clasp 100 are located on the outer side of the mounting base 130. The outer side of the mounting base 130 is the side of the mounting base 130 that faces away from the wrist when the wearable device 1000 is worn. In combination with FIG. 5, when the first fixed band 200 and the second fixed band 300 are connected through the clasp 100, the first folding piece 110 and the second folding piece 120 are closed and located on the inner side of the second fixed band 300, and the free end 300a of the second fixed band 300 is located on the outer side of the first fixed band 200. A limiting ring 200a can be arranged on the first band 400, so that the free end 300a of the second fixed band 300 passes through the limiting ring 200a, thereby avoiding the free end 300a of the second fixed band 300 from being too long and causing poor user experience.

[0178] In order to make the first folding piece 110 and the second folding piece 120 thin and less likely to deform, in some embodiments, referring to FIG. 6 and FIG. 7, the first folding piece 110 includes a first arc-shaped plate 111, and the second folding piece 120 includes a second arc-shaped plate 122; the opposite two ends of the first arc-shaped plate 111 are a first end 110a and a second end 110b respectively, and the opposite two ends of the second arc-shaped plate 122 are a third end 120a and a fourth end 120b respectively. In combination with FIG. 10 and FIG. 11, the second end 110b and the third end 120a are rotationally connected through a pin shaft 112. When the first folding piece 110 and the second folding piece 120 are closed, the first arc-shaped plate 111 and the second arc-shaped plate 122 are arranged in the direction of the pin shaft 112, and the extension directions of the first arc-shaped plate 111 and the second arc-shaped plate 122 are the same.

[0179] The first folding piece 110 and the second folding piece 120 are respectively provided as the first arc-shaped plate 111 and the second arc-shaped plate 122. In combination with FIG. 3, the closed first folding piece 110 and the second folding piece 120 form an arc-shaped structure and are kept between the first fixing band 200 and the second fixing band 300, which has a small influence on the bending shape of the first fixing band 200 and the second fixing band 300 and has a good appearance effect.

[0180] 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), and the extension directions of the first arc-shaped plate 111 and the second arc-shaped plate 122 are the same. Under the same total thickness, the thickness of the first arc-shaped plate 111 and the second arc-shaped plate 122 can be increased, which increases the rigidity of the first arc-shaped plate 111 and the second arc-shaped plate 122 and makes them not easy to deform under force, thereby improving the user's experience of opening and closing operation of the first folding piece 110 and the second folding piece 120.

[0181] The first arc-shaped plate 111 and the second arc-shaped plate 122 are rotatably connected through the pin shaft 112. The end of the first arc-shaped plate 111 and the end of the second arc-shaped plate 122 can be respectively provided with a connecting hole, and the pin shaft 112 is connected to the connecting holes, so that the first arc-shaped plate 111 and the second arc-shaped plate 122 can rotate around the pin shaft 112.

[0182] When the first arc-shaped plate 111 and the second arc-shaped plate 122 are configured, there are various optional implementation manners. Two implementation manners are exemplarily given below.

[0183] The first implementation manner of the first arc-shaped plate 111 and the second arc-shaped plate 122: referring to FIG. 6 and FIG. 10, the first arc-shaped plate 111 is a plurality of, and the plurality of 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 piece 110 and the second folding piece 120 are closed, at least one second arc-shaped plate 122 is located between the plurality of first arc-shaped plates 111.

[0184] The plurality of first arc-shaped plates 111 are arranged at intervals, and at least one second arc-shaped plate 122 is arranged between the plurality of first arc-shaped plates 111, so that the rotation connection between the first arc-shaped plate 111 and the second arc-shaped plate 122 is stable and reliable. One or more second arc-shaped plates 122 can be arranged between two adjacent first arc-shaped plates 111.

[0185] Exemplarily, referring to FIG. 6 and FIG. 10, two first arc-shaped plates 111 are arranged at intervals in 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 first arc-shaped plate 111 and the second arc-shaped plate 122 are rotationally connected stably and reliably. 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 elastic buckle assembly 140 can be arranged corresponding to the fourth end 120b of the second arc-shaped plate 122, or can be arranged corresponding to the first end 110a of the first arc-shaped plate 111.

[0186] Exemplarily, referring to FIG. 13, two first arc-shaped plates 111 and two second arc-shaped plates 122 are arranged, and the first arc-shaped plate 111 and the second arc-shaped plate 122 are arranged in sequence and staggered in the direction of the pin shaft 112. The first arc-shaped plate 111 and the second arc-shaped plate 122 are rotationally connected stably and reliably. 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 elastic buckle assembly 140 can be arranged corresponding to the fourth end 120b of one of the second arc-shaped plates 122, or can be arranged corresponding to the first end 110a of the first arc-shaped plate 111.

[0187] When multiple elastic buckle assemblies 140 are arranged, one elastic buckle assembly 140 can be arranged corresponding to the fourth end 120b of the second arc-shaped plate 122 close to the middle position, and another elastic buckle assembly 140 can be arranged corresponding to the first end 110a of the first arc-shaped plate 111 close to the middle position, so that the multiple elastic buckle assemblies 140 can stably and reliably connect the second folding piece 120 and the mounting seat 130.

[0188] The second implementation mode of the first arc-shaped plate 111 and the second arc-shaped plate 122: referring to FIG. 14, one first arc-shaped plate 111 and one second arc-shaped plate 122 are arranged in the direction of the pin shaft 112 (i.e. the axial direction 112a of the pin shaft 112). The first arc-shaped plate 111 and the second arc-shaped plate 122 are rotationally connected stably and reliably. 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 elastic buckle assembly 140 can be arranged corresponding to the fourth end 120b of the second arc-shaped plate 122, or can be arranged corresponding to the first end 110a of the first arc-shaped plate 111.

[0189] There are various optional implementations when setting the snap buckle assembly 140. In a first implementation of the snap buckle assembly 140, referring to FIGS. 6 and 7, the first part 140a is a bayonet structure 140c and the second part 140b is a snap buckle 121, and the bayonet structure 140c and the snap buckle 121 can be snap-fitted. The bayonet structure 140c has a large elastic stroke or elastic deformation amount. In a second implementation of the snap buckle assembly 140, the first part 140a is a snap buckle 121 and the second part 140b is a bayonet structure 140c, and the bayonet structure 140c and the snap buckle 121 can be snap-fitted. The bayonet structure 140c has a large elastic stroke or elastic deformation amount. The first implementation of the snap buckle assembly 140 will be mainly described below.

[0190] In order to facilitate the fixing of the first end 110a of the first folding piece 110 to the mounting seat 130, in some embodiments, referring to FIGS. 6 to 9 and 15, the first end 110a of the first folding piece 110 has a cover portion 113 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 arranged at the mounting groove 131, and the cover portion 113 has a clearance 1131 for partially exposing the bayonet structure 140c.

[0191] The first end 110a of the first folding piece 110 has the cover portion 113, the bayonet structure 140c is arranged in the mounting groove 131 enclosed by the mounting seat 130 and the cover portion 113, which facilitates the arrangement of the bayonet structure 140c on the mounting seat 130, and 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 piece 110 is fixed to the mounting seat 130. The bayonet structure 140c is partially exposed through the clearance 1131 of the cover portion 113, which facilitates the snap-fitting of the snap buckle 121 and the bayonet structure 140c. The clearance 1131 can be a groove or a hole.

[0192] The mounting groove 131 can be formed on the mounting seat 130, and the cover portion 113 is arranged at the groove opening 132 of the mounting groove 131. Alternatively, the mounting groove 131 can be formed on the cover portion 113, and the mounting seat 130 is arranged at the groove opening 132 of the mounting groove 131.

[0193] For example, the mounting seat 130 can be a substantially strip-shaped cuboid, and the length direction 130a of the mounting seat 130 can be parallel to the width direction of the fixing band. The cover portion 113 can be a substantially rectangular plate. The cover portion 113 is arranged on the mounting seat 130, and the stacked mounting seat 130 and 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 arranged in other shapes.

[0194] In assembling the cover 113 and the mounting base 130, the cover 113 and the mounting base 130 can be assembled by fasteners (e.g., screws), buckles, adhesives, or the like.

[0195] For example, referring to FIGS. 6 and 7, the cover 113 and the mounting base 130 are connected by fasteners (e.g., screws) arranged in the stacking direction of the cover 113 and the mounting base 130. The fasteners can be screwed onto the mounting base 130 through the cover 113 or screwed onto the cover 113 through the mounting base 130.

[0196] To reliably connect the cover 113 and the mounting base 130 and to reduce the total thickness of the cover 113 and the mounting base 130, in some embodiments, referring to FIGS. 6 and 7, the cover 113 and the mounting base 130 are connected by fasteners (e.g., screws), and the side of the cover 113 facing the mounting base 130 can be provided with an outward protruding structure 1132, and the side of the mounting base 130 facing the cover 113 can be provided with an inward recessed structure 139, which is adapted to the outward protruding structure 1132. For example, when the outward protruding structure 1132 is in the form of an outward protruding frame, the inward recessed structure 139 is in the form of a frame-shaped groove; or when the outward protruding structure 1132 is in the form of an outward protruding rectangle, the inward recessed structure 139 is in the form of a rectangular groove. Aligning the outward protruding structure 1132 with the inward recessed structure 139 can increase the effective length of the fasteners, reliably connect the cover 113 and the mounting base 130, and reduce the total thickness of the cover 113 and the mounting base 130.

[0197] In the case of the bayonet structure 140c, referring to FIGS. 6 to 8, the buckle 121 and the bayonet structure 140c can be elastically stretched to reduce the stress deformation failure. The bayonet structure 140c can include a sliding buckle 141 and an elastic member 142. The sliding buckle 141 is movably mounted on the mounting base 130, and the elastic member 142 is arranged opposite to the sliding buckle 141 at one end and opposite to the wall of the mounting base 130 at the other end. The elastic member 142 is used to elastically stretch the sliding buckle 141. When the elastic member 142 is in the stretched state, the sliding buckle 141 is in the extended position, and the bayonet 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 buckle 141 is in the retracted position, and the bayonet assembly 140 is in the critical state (as shown in FIG. 17).

[0198] The bayonet structure 140c using the sliding buckle 141 and the elastic member 142 can elastically deform the elastic member 142 during the contact and buckling of the sliding buckle 141 and the buckle 121, and the sliding buckle 141 can have a large sliding stroke under the action of the elastic member 142, i.e., the bayonet structure 140c has a large elastic stroke, and neither the sliding buckle 141 nor the buckle 121 is prone to stress deformation failure, which can improve the reliability and stability of the watch buckle 100.

[0199] In combination with Fig. 15, when the snap buckle assembly 140 is in the locked state, i.e. the first part 140a (the snap structure 140c) and the second part 140b (the snap 121) are in the snap fit, the elastic member 142 on the mounting base 130 is stretched to the maximum length, the stretched elastic member 142 makes the slide buckle 141 extend out, the extended slide buckle 141 and the snap 121 are in the snap fit. The first folding part 110 and the second folding part 120 remain closed.

[0200] In combination with Fig. 16, when the snap buckle assembly 140 is in the separated state, i.e. the first part 140a (the snap structure 140c) and the second part 140b (the snap 121) are separated, the elastic member 142 on the mounting base 130 is stretched to the maximum length, the stretched elastic member 142 makes the slide buckle 141 extend out, the extended slide buckle 141 and the snap 121 are completely separated. The first folding part 110 and the second folding part 120 remain open.

[0201] In combination with Fig. 17, the critical state is the intermediate state between the locked state and the separated state. When the snap buckle assembly 140 is in the critical state, the slide buckle 141 and the snap 121 are in contact, the slide buckle 141 makes the elastic member 142 on the mounting base 130 compressed and stored energy, the length of the elastic member 142 becomes smaller. By moving the snap 121 relative to the mounting base 130, the snap 121 and the slide buckle 141 can be in the snap fit or separated, the elastic member 142 on the mounting base 130 can recover to the maximum length.

[0202] The elastic member 142 can be a spring, a spring sheet or other elastic structure.

[0203] When the snap structure 140c with the slide buckle 141 and the elastic member 142 is provided, there are various optional implementation manners, two implementation manners are exemplarily given below.

[0204] The first implementation manner of the snap structure 140c with the slide buckle 141 and the elastic member 142: referring to Figs. 6 to 8, the slide buckle 141 includes a sliding part 1411 and a first buckle part 1412, the sliding part 1411 is slidingly installed on the mounting base 130, the sliding part 1411 has opposite two ends along the sliding direction (i.e. the moving direction 141a of the slide buckle 141), the first buckle part 1412 is connected to one end of the sliding part 1411, and the elastic member 142 is arranged at the other end of the sliding part 1411. The snap 121 can be in the snap fit with the first buckle part 1412.

[0205] The slide buckle 141 with the sliding part 1411 and the first buckle part 1412 can move in the predetermined direction on the mounting base 130. In combination with Fig. 16, when the snap buckle assembly 140 is in the separated state, the first buckle part 1412 extends out of the avoiding area 1131 of the cover part 113 under the action of the elastic member 142, and the snap 121 and the extended first buckle part 1412 are completely separated.

[0206] In combination with Fig. 17, when the buckle 121 and the first buckle part 1412 need to be buckled, the buckle 121 is pushed into the first buckle part 1412, the buckle 121 acts on the first buckle part 1412 to make the first buckle part 1412 retract, the elastic member 142 is compressed to store energy, and the elastic buckle assembly 140 is in a critical state. In combination with Fig. 15, the buckle 121 is continuously pushed into the first buckle part 1412 to make the buckle 121 and the first buckle part 1412 buckled and matched, the elastic member 142 is stretched to release energy to make the first buckle part 1412 extend, and the elastic buckle assembly 140 is in a locked state.

[0207] The buckle structure 140c matched by the sliding buckle member 141 and the elastic member 142, in the process of the contact buckling of the buckle 121 and the sliding buckle member 141, the elastic member 142 can make the sliding buckle member 141 elastically stretch and retract, the buckle structure 140c has a large elastic stroke, the buckle 121 and the sliding buckle member 141 are not easy to be deformed and fail under force, and the reliability of the watch buckle 100 is high.

[0208] In the sliding direction of the sliding part 1411 (i.e. the moving direction 141a of the sliding buckle member 141), the cross-sectional shape of the sliding part 1411 and the cross-sectional shape of the mounting groove 131 of the mounting seat 130 are matched to make the sliding part 1411 be able to slide and be mounted on the mounting seat 130 in a predetermined direction. For example, in the sliding direction of the sliding part 1411, the cross-sections of the sliding part 1411 and the mounting groove 131 are both rectangular. The sliding part 1411 can be a cuboid or other shapes. The first buckle part 1412 can be a sheet, an L-shaped or other shapes.

[0209] In order to limit the moving range of the sliding part 1411, in some embodiments, referring to Figs. 6 and 8, the mounting seat 130 has a first blocking wall 133 for abutting and matching with the sliding part 1411 to limit the sliding part 1411; the first blocking wall 133 has an opening 134 for the first buckle part 1412 to extend out.

[0210] In combination with Figs. 15 and 17, in the locked state or the separated state of the elastic buckle assembly 140, the stretched elastic member 142 acts on the sliding part 1411 to make the sliding part 1411 abut against the first blocking wall 133 to limit the position of the sliding part 1411, and the first buckle part 1412 can extend out through the opening 134. The extended first buckle part 1412 and the buckle 121 can be buckled and matched or separated.

[0211] For example, referring to FIGS. 6 and 8, the first buckle part 1412 includes a first segment and a second segment, which are connected and arranged in an L shape. The first segment is connected to the sliding part 1411, and the second segment is used to be clamped with the buckle 121. The L-shaped first buckle part 1412 has good structural strength, which improves the reliability of the first buckle part 1412. Under the action of the elastic member 142, the sliding part 1411 abuts against the first blocking wall 133, the first segment is located at the opening 134, and the second segment extends out of the opening 134.

[0212] In order to limit the elastic member 142 on the sliding part 1411, in some embodiments, referring to FIGS. 6, 8 and 15, the slide buckle 141 further includes a first limiting part 1413 connected to one end of the sliding part 1411 away from the first buckle part 1412. One end of the elastic member 142 is mounted on the first limiting part 1413.

[0213] During the compression or expansion of the elastic member 142, one end of the elastic member 142 remains mounted on the first limiting part 1413 and abuts against the sliding part 1411, which reduces the possibility of the elastic member 142 coming off the sliding part 1411 and improves the reliability of the cooperation between the slide buckle 141 and the elastic member 142.

[0214] For example, the elastic member 142 is a compression spring. The first limiting part 1413 can be a columnar structure arranged 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 arranged on the sliding part 1411, and one end of the compression spring extends into the positioning hole.

[0215] In order to increase the elastic force of the elastic member 142 in the limited space of the mounting seat 130, in some embodiments, referring to FIGS. 6 and 8, a plurality of elastic members 142 are arranged on the sliding part 1411, and the mounting seat 130 has a partition wall 135. The adjacent two elastic members 142 are separated by the partition wall 135.

[0216] By arranging a plurality of short elastic members 142 side by side on the small-size mounting seat 130, the elastic force received by the sliding part 1411 can be improved by the cooperation between the plurality of elastic members 142 and the sliding part 1411. By separating the adjacent two elastic members 142 through the partition wall 135 on the mounting seat 130, the interference between the two elastic members 142 during use is avoided, and the reliability and stability of the bayonet structure 140c are improved.

[0217] To facilitate the pushing of the clasp 121 into the card slot structure 140c, in some embodiments, referring to FIG. 17, the head 1212 of the clasp 121 has a first guide surface 121a, which is configured to slide against the first clasp portion 1412 during the switching of the first fold 110 and the second fold 120 from the open state to the closed state, so as to switch the elastic clasp assembly 140 from the separated state to the critical state.

[0218] During the pushing of the clasp 121 into the card slot structure 140c, the first guide surface 121a of the head 1212 of the clasp 121 slides against the first clasp portion 1412, so as to switch the first clasp portion 1412 from the extended position to the retracted position, and switch the elastic member 142 from the stretched state to the compressed state, i.e., switch the elastic clasp assembly 140 from the separated state (as shown in FIG. 16) to the critical state (as shown in FIG. 17), so as to facilitate the pushing of the clasp 121 into the card slot structure 140c. The first guide surface 121a can be an arc surface or other smooth curved surface. With the continuous pushing of the clasp 121 into the card slot structure 140c, the elastic member 142 is stretched to extend the first clasp portion 1412, so as to enable the clasp 121 to be engaged with the card slot structure 140c (as shown in FIG. 15).

[0219] To facilitate the disengagement of the clasp 121 from the card slot structure 140c, in some embodiments, referring to FIG. 15, the middle portion of the clasp 121 has a second guide surface 121b, which is configured to slide against the first clasp portion 1412 during the switching of the first fold 110 and the second fold 120 from the closed state to the open state, so as to switch the elastic clasp assembly 140 from the locked state to the critical state.

[0220] During the pulling of the clasp 121 to disengage the clasp 121 from the card slot structure 140c, the second guide surface 121b of the middle portion of the clasp 121 slides against the first clasp portion 1412, so as to switch the first clasp portion 1412 from the extended position to the retracted position, and switch the elastic member 142 from the stretched state to the compressed state, i.e., switch the elastic clasp assembly 140 from the locked state (as shown in FIG. 15) to the critical state (as shown in FIG. 17), so as to facilitate the disengagement of the clasp 121 from the card slot structure 140c. The second guide surface 121b can be an arc surface or other smooth curved surface. With the continuous pulling of the clasp 121 to disengage the clasp 121 from the card slot structure 140c, the elastic member 142 is stretched to extend the first clasp portion 1412, so as to enable the clasp 121 to be completely separated from the card slot structure 140c (as shown in FIG. 16).

[0221] For example, referring to FIG. 7 and FIG. 15, the buckle 121 includes a columnar portion 1211 and a head portion 1212 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 piece 120. The head portion 1212 has a first guide surface 121a at the end away from the columnar portion 1211. The head portion 1212 has a second guide surface 121b on the side facing the columnar portion 1211.

[0222] To achieve reliable connection between the buckle 121 and the socket structure 140c, in some embodiments, referring to FIG. 6, FIG. 8 and FIG. 15, the socket structure 140c is arranged in pairs, and the first buckle portion 1412 in the pair of socket structures 140c is arranged in pairs and spaced apart, and the elastic stretching directions of the pair of socket structures 140c are opposite. The buckle 121 includes a columnar portion 1211 and a head portion 1212 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 piece 120. When the first folding piece 110 and the second folding piece 120 are closed, the columnar portion 1211 is located between the pair of first buckle portions 1412, and the head portion 1212 is arranged on the pair of first buckle portions 1412.

[0223] In combination with FIG. 16, when the elastic buckle assembly 140 is in a separated state, the elastic member 142 in each of the two socket structures 140c acts on the corresponding sliding buckle member 141, so that the two sliding buckle members 141 are pushed out and arranged in pairs.

[0224] In combination with FIG. 17, the buckle 121 is pushed into the first buckle portion 1412 between the two sliding buckle members 141, and the two sliding buckle members 141 move in opposite directions, and the two sliding buckle members 141 act on the corresponding elastic member 142, so that the two elastic members 142 are compressed in opposite directions, and the elastic buckle assembly 140 is in a critical state.

[0225] In combination with FIG. 15, the buckle 121 is continuously pushed into the first buckle portion 1412 between the two sliding buckle members 141, and the corresponding sliding buckle member 141 moves towards each other under the action of the two elastic members 142, so that the two sliding buckle members 141 are pushed out, and the two first buckle portions 1412 are arranged on the head portion 1212 of the buckle 121, so that the elastic buckle assembly 140 is in a locked state. The same buckle 121 and the pair of socket structures 140c are connected and matched, which can improve the connection reliability of the elastic buckle assembly 140.

[0226] In order to make the socket structure 140c occupy a smaller space in the mounting seat 130, in some embodiments, referring to FIG. 8 and FIG. 15, the moving direction 141a of the sliding buckle member 141, the stretching 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 fixed band of the wearable device 1000.

[0227] The moving direction 141a of the slide buckle 141 and the stretching direction of the elastic member 142 are arranged along the length direction 130a of the mounting base 130, the length direction 130a of the mounting base 130 is fully utilized, and the width dimension of the mounting base 130 can be made smaller.

[0228] For example, the mounting base 130 is substantially 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.

[0229] In other embodiments, the moving direction 141a of the slide buckle 141 and the stretching direction of the elastic member 142 are parallel, and the moving direction 141a of the slide buckle 141 and the length direction 130a of the mounting base 130 can form a predetermined included angle, for example, the moving direction 141a of the slide buckle 141 and the length direction 130a of the mounting base 130 are perpendicular.

[0230] The second implementation manner of the bayonet structure 140c with the slide buckle 141 and the elastic member 142: referring to FIGS. 18 to 23, the mounting base 130 has a mounting hole 136; the slide buckle 141 includes a key portion 1414 and a second buckle portion 1416, the key portion 1414 is slidingly installed on the mounting base 130 and exposed at the mounting hole 136, the second buckle portion 1416 is connected to the key portion 1414, and the elastic member 142 is arranged on the side of the key portion 1414 away from the mounting hole 136; in combination with FIG. 24, the buckle 121 can be clamped to the second buckle portion 1416.

[0231] The slide buckle 141 with the key portion 1414 and the second buckle portion 1416 can move in a predetermined direction on the mounting base 130, and the position of the key portion 1414 can be adjusted by pressing. In combination with FIG. 25, the elastic buckle assembly 140 is in a separated state, the second buckle portion 1416 is stretched out under the action of the elastic member 142, and the key portion 1414 is exposed to the mounting hole 136, and the buckle 121 and the second buckle portion 1416 are completely separated.

[0232] In combination with FIG. 26, when the buckle 121 and the second buckle portion 1416 need to be clamped, the key portion 1414 is pressed, the second buckle portion 1416 is retracted with the key portion 1414, the elastic member 142 is compressed and stored, the buckle 121 is pushed into the second buckle portion 1416, and the elastic buckle assembly 140 is in a critical state. In combination with FIG. 24, the buckle 121 is continuously pushed into the second buckle portion 1416, the buckle 121 and the second buckle portion 1416 are clamped and matched, the second buckle portion 1416 is stretched out under the stretching of the elastic member 142, and the elastic buckle assembly 140 is in a locked state.

[0233] In combination with Fig. 26, when the buckle 121 needs to be separated from the second buckle part 1416, the key part 1414 is pressed, the second buckle part 1416 is retracted into the key part 1414, the elastic member 142 is compressed to store energy, and the buckle 121 can be separated from the second buckle part 1416. In combination with Fig. 25, after the buckle 121 is separated from the second buckle part 1416 and the key part 1414 is released, the elastic member 142 is stretched to release energy, the key part 1414 is reset to the mounting hole 136, and the second buckle part 1416 is extended.

[0234] The bayonet structure 140c cooperated with the sliding buckle member 141 and the elastic member 142, in the process of the contact and clamping of the buckle 121 and the sliding buckle member 141, the elastic member 142 can make the sliding buckle member 141 elastically stretch and retract, the bayonet structure 140c has a large elastic stroke, the buckle 121 and the sliding buckle member 141 are not easy to be deformed and fail under force, and the watchband 100 has high reliability.

[0235] In combination with Figs. 18 and 19, in the sliding direction of the key part 1414 (i.e. the moving direction 141a of the sliding buckle member 141), the cross-sectional shape of the key part 1414 and the cross-sectional shape of the partial mounting groove 131 of the mounting seat 130 are matched, so that the key part 1414 can be linearly slid and mounted on the mounting seat 130 in the predetermined direction. For example, in the sliding direction of the key part 1414, the cross-section of the key part 1414 and the partial cross-sectional shape of the mounting groove 131 are both rectangular. The key part 1414 can be substantially cuboid or have other shapes. The second buckle part 1416 can be strip-shaped or have other shapes.

[0236] In order to limit the moving range of the key part 1414, in some embodiments, referring to Figs. 18 and 19, the sliding buckle member 141 further comprises a second limiting part 1417 connected to the key part 1414, and the mounting seat 130 has a second blocking wall 137 for abutting and cooperating with the second limiting part 1417 to limit the key part 1414.

[0237] In the locked state or the separated state of the elastic buckle assembly 140, the stretched elastic member 142 acts on the key part 1414, so that the second limiting part 1417 abuts against the second blocking wall 137 to limit the position of the key part 1414, so as to prevent the key part 1414 from being separated from the mounting seat 130. The second limiting part 1417 can be an outward protruding structure provided on the key part 1414, and the outward protruding structure abuts and cooperates with the second blocking wall 137.

[0238] To facilitate the installation of the elastic member 142, in some embodiments, referring to FIG. 18 and FIG. 19, the key portion 1414 has a receiving groove 1415 on the side away from the mounting hole 136, and the elastic member 142 is at least partially arranged in the receiving groove 1415. Arranging the elastic member 142 in the receiving groove 1415 of the key portion 1414 can reduce the space occupied by the elastic member 142 on the mounting seat 130, and facilitate the positioning and installation of one end of the elastic member 142 on the key portion 1414.

[0239] To facilitate the pushing of the buckle 121 into the clamping structure 140c, in some embodiments, referring to FIG. 25 and FIG. 26, the head portion 1212 of the buckle 121 has a third guide surface 121c, which is used for sliding contact with the second buckle portion 1416 during the process of switching the first folding piece 110 and the second folding piece 120 from opening to closing, so as to switch the elastic buckle assembly 140 from the separated state (as shown in FIG. 25) to the critical state (as shown in FIG. 26).

[0240] During the process of pressing the elastic buckle assembly 140 to push the buckle 121 into the clamping structure 140c, the sliding contact between the third guide surface 121c of the head portion 1212 of the buckle 121 and the second buckle portion 1416 can switch the second buckle portion 1416 from the extended position to the retracted position, and switch the elastic member 142 from the stretched state to the compressed state, that is, switch the elastic buckle assembly 140 from the separated state to the critical state, thereby facilitating the user to push the buckle 121 into the clamping structure 140c. The third guide surface 121c can be an inclined surface, an arc surface, or other smooth curved surface. Continuing to press the elastic buckle assembly 140 to completely push the buckle 121 into the clamping structure 140c, the elastic member 142 is stretched to make the second buckle portion 1416 extend out of the avoiding area 1131 of the cover portion 113, so as to make the buckle 121 and the clamping structure 140c clamped and matched (as shown in FIG. 24).

[0241] To arrange the long key portion 1414 on the small-space mounting seat 130, in some embodiments, referring to FIG. 18, FIG. 19 and FIG. 22, the moving direction 141a of the sliding buckle member 141 and the stretching direction of the elastic member 142 are parallel, and the moving direction 141a of the sliding buckle member 141 and the length direction 130a of the mounting seat 130 are perpendicular.

[0242] Arranging the moving direction 141a of the sliding buckle member 141 and the stretching direction of the elastic member 142 both perpendicular to the length direction 130a of the mounting seat 130 can make full use of the space in the length direction 130a of the mounting seat 130, so as to make the key portion 1414 in the sliding buckle member 141 longer, thereby facilitating the user to press the key portion 1414.

[0243] Exemplarily, the mounting base 130 is substantially 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 extension direction of the fixing band, and the thickness direction of the mounting base 130 is the thickness direction of the fixing band.

[0244] In some other embodiments, the moving direction 141a of the sliding buckle 141 and the stretching direction of the elastic member 142 are parallel, and the moving direction 141a of the sliding buckle 141 and the length direction 130a of the mounting base 130 can form a predetermined included angle, for example, the moving direction 141a of the sliding buckle 141 and the length direction 130a of the mounting base 130 are parallel.

[0245] When the snap structure 140c is provided, referring to FIGS. 27 to 34, the elastic deformation mode can be used to reduce the stress deformation failure of the buckle 121 and the snap structure 140c. The snap structure 140c can include an elastically deformable bending elastic sheet 143, and the bending elastic sheet 143 has a clamping groove 1431 with a variable width. In combination with (b) and (c) in FIG. 28, when the elastic buckle assembly 140 is in the locked state or the separated state, the width of the mouth 1432 of the clamping groove 1431 is a first width 1432a. In combination with (d) in FIG. 28, when the elastic buckle assembly 140 is in the critical state, the width of the mouth 1432 of the clamping groove 1431 is a second width 1432b; the first width 1432a is smaller than the second width 1432b.

[0246] The snap structure 140c using the bending elastic sheet 143 can be elastically deformed during the contact buckling of the bending elastic sheet 143 and the buckle 121, the bending elastic sheet 143 can have a large elastic deformation amount, and neither the bending elastic sheet 143 nor the buckle 121 is prone to stress deformation failure, so that the reliability and stability of the watch buckle 100 are higher.

[0247] In combination with (b) in FIG. 28, when the elastic buckle assembly 140 is in the locked state, that is, the first part 140a (the snap structure 140c) and the second part 140b (the buckle 121) are buckled and matched, the width of the mouth 1432 of the clamping groove 1431 of the bending elastic sheet 143 (that is, the first width 1432a) is small, and the bending elastic sheet 143 and the buckle 121 are in contact buckling. The first folding piece 110 and the second folding piece 120 remain closed.

[0248] In combination with (c) in FIG. 28, when the elastic buckle assembly 140 is in the separated state, that is, the first part 140a (the snap structure 140c) and the second part 140b (the buckle 121) are separated, the width of the mouth 1432 of the clamping groove 1431 of the bending elastic sheet 143 (that is, the first width 1432a) is small, and the bending elastic sheet 143 and the buckle 121 are completely separated. The first folding piece 110 and the second folding piece 120 remain open.

[0249] In combination with (d) of FIG. 28, the critical state is an intermediate state between the locked state and the separated state. When the snap-fit assembly 140 is in the critical state, the width (i.e., the second width 1432b) of the opening 1432 of the clamping slot 1431 of the bent elastic piece 143 is relatively large, and the clamping slot 1431 of the bent elastic piece 143 and the clasp 121 can be clamped together or separated by moving the clasp 121 relative to the mounting base 130.

[0250] When the clamping structure 140c in the form of the bent elastic piece 143 is provided, there are various alternative implementations. Two exemplary implementations are given below.

[0251] The first implementation of the clamping structure 140c in the form of the bent elastic piece 143: Referring to FIGS. 27-34, 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 arranged in a spaced manner, and the clamping slot 1431 is formed between the second inclined arm 143c and the third inclined arm 143e. In combination with (b) of FIG. 28, when the snap-fit assembly 140 is in the locked state, the clasp 121 is located between the second inclined arm 143c and the third inclined arm 143e, and the second inclined arm 143c and the third inclined arm 143e are arranged on opposite sides of the clasp 121, respectively.

[0252] The above-mentioned bending spring 143 can be formed by bending a sheet spring (such as a stainless steel sheet), and is easy to manufacture. In the initial state of the bending spring 143, the second inclined arm 143c, the third inclined arm 143e and the second transverse arm 143d are arranged in a substantially triangular shape, the second inclined arm 143c and the third inclined arm 143e are arranged close to each other at the end away from the second transverse arm 143d, and the mouth 1432 of the clamping groove 1431 has a small width (i.e. the first width 1432a). When the buckle 121 is just pushed into the clamping groove 1431 of the bending spring 143, the buckle 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 spread apart, the second inclined arm 143c moves with the first inclined arm 143b, the fourth inclined arm 143f moves with the third inclined arm 143e, and the mouth 1432 of the clamping groove 1431 has a large width (i.e. the second width 1432b). When the buckle 121 is completely pushed into the clamping groove 1431 of the bending spring 143, the buckle 121 is limited by the second inclined arm 143c and the third inclined arm 143e, and the buckle 121 and the bending spring 143 are locked together.

[0253] In the case where the cover portion 113 is provided on the mounting seat 130 and has a clearance 1131, referring to FIGS. 29 and 30, the clamping groove 1431 of the bending spring 143 is arranged corresponding to the clearance 1131 of the cover portion 113, the first inclined arm 143b and the second inclined arm 143c are located at one side edge of the clearance 1131, and the third inclined arm 143e and the fourth inclined arm 143f are located at the other side edge of the clearance 1131. The first transverse arm 143a and the third transverse arm 143g are limited by the cover portion 113.

[0254] Referring to FIG. 28(a), a round corner can be arranged between the first inclined arm 143b and the second inclined arm 143c, and a round corner can be arranged between the third inclined arm 143e and the fourth inclined arm 143f, so as to facilitate the sliding contact between the head 1212 of the buckle 121 and the round corner region, and further facilitate the clamping and fitting of the head 1212 of the buckle 121 and the clamping groove 1431 of the bending spring 143.

[0255] The second implementation of the bayonet structure 140c in the form of the bent elastic piece 143: referring to FIGS. 35-42, the bent elastic piece 143 includes a sheet portion 143h, a first cantilever 143i, and a second cantilever 143j, the sheet portion 143h is arranged on the mounting base 130, one end of the first cantilever 143i is connected to the sheet portion 143h, one end of the second cantilever 143j is connected to the sheet portion 143h, the first cantilever 143i and the second cantilever 143j are arranged in a spaced manner, and a clamping groove 1431 is formed between the first cantilever 143i and the second cantilever 143j. In combination with (b) in FIG. 36, when the clamping buckle 121 is located between the first cantilever 143i and the second cantilever 143j when the elastic buckle assembly 140 is in the locked state, the first cantilever 143i and the second cantilever 143j are arranged on opposite sides of the clamping buckle 121, respectively.

[0256] The above-mentioned bent elastic piece 143 can be formed by bending a sheet elastic piece (such as a stainless steel sheet), and is easy to manufacture. In combination with (c) in FIG. 36, in the initial state of the bent elastic piece 143, a clamping groove 1431 with a large lower part and a small upper part is formed between the first cantilever 143i and the second cantilever 143j, the free end of the first cantilever 143i and the free end of the second cantilever 143j are arranged in a close manner, and the width of the mouth portion 1432 of the clamping groove 1431 (i.e., the first width 1432a) is small. In combination with (d) in FIG. 36, when the clamping buckle 121 is just pushed into the clamping groove 1431 of the bent elastic piece 143, the clamping buckle 121 acts on the first cantilever 143i and the second cantilever 143j, so that the first cantilever 143i and the second cantilever 143j are spread to both sides, and the width of the mouth portion 1432 of the clamping groove 1431 (i.e., the second width 1432b) is large. In combination with (b) in FIG. 36, when the clamping buckle 121 is completely pushed into the clamping groove 1431 of the bent elastic piece 143, the clamping buckle 121 is limited by the first cantilever 143i and the second cantilever 143j, and the locking of the clamping buckle 121 and the bent elastic piece 143 is achieved.

[0257] For the above-mentioned two kinds of bayonet structures 140c in the form of the bent elastic piece 143, referring to FIGS. 28 and 36, the clamping 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 piece 120; in the width direction of the mouth portion 1432 of the clamping groove 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.

[0258] The buckle 121 with the columnar part 1211 and the head part 1212 is easy to be formed and can be engaged with the bent elastic piece 143. The head part 1212 of the buckle 121 is set to have a width greater than that of the opening 1432 of the clamping groove 1431 in the locked state or the separated state (i.e., the first width 1432a), so that the buckle 121 and the bent elastic piece 143 are kept locked when the buckle 121 is engaged with the clamping groove 1431 of the bent elastic piece 143 and are completely separated when the buckle 121 is separated from the clamping groove 1431 of the bent elastic piece 143.

[0259] For the two types of the clamping groove structure 140c of the bent elastic piece 143, referring to FIG. 28 and FIG. 36, in order to facilitate the buckle 121 to be pushed into the bent elastic piece 143, in some embodiments, the head part 1212 has a fourth guide surface 121d on the side away from the columnar part 1211, which is used to slide with the bent elastic piece 143 during the process of switching the first folding part 110 and the second folding part 120 from the open state to the closed state, so as to switch the elastic buckle assembly 140 from the separated state to the critical state.

[0260] In combination with (c) and (d) in FIG. 28, during the process of pressing the elastic buckle assembly 140 to push the buckle 121 into the bent elastic piece 143, the fourth guide surface 121d of the head part 1212 of the buckle 121 slides with the bent elastic piece 143, which can make the width of the clamping groove 1431 of the bent elastic piece 143 larger, i.e., the elastic buckle 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 guide surface 121d can be an arc surface or other smooth curved surface. In combination with (b) in FIG. 28, the elastic buckle assembly 140 is continuously pressed to completely push the buckle 121 into the bent elastic piece 143, the width of the opening 1432 of the clamping groove 1431 of the bent elastic piece 143 becomes smaller, so that the buckle 121 is engaged with the bent elastic piece 143.

[0261] For the two types of the clamping groove structure 140c of the bent elastic piece 143, referring to FIG. 28 and FIG. 36, in order to facilitate the buckle 121 to be separated from the bent elastic piece 143, in some embodiments, the head part 1212 has a fifth guide surface 121e near the columnar part 1211, which is used to slide with the bent elastic piece 143 during the process of switching the first folding part 110 and the second folding part 120 from the closed state to the open state, so as to switch the clamping groove structure 140c from the locked state to the critical state.

[0262] In combination with (b) and (d) in FIG. 28, in the process of pulling the buckle 121 to separate the buckle 121 from the bent elastic piece 143, the fifth guide surface 121e of the head 1212 of the buckle 121 is in sliding contact with the bent elastic piece 143, which can make the width of the clamping slot 1431 of the bent elastic piece 143 larger, i.e., the elastic buckle assembly 140 is switched from the locked state to the critical state, which facilitates the user to separate the buckle 121 from the bent elastic piece 143. The fifth guide surface 121e can be an arc surface or other smooth curved surface. In combination with (c) in FIG. 28, the buckle 121 is continuously pulled to completely separate the buckle 121 from the bent elastic piece 143, and the width of the mouth 1432 of the clamping slot 1431 of the bent elastic piece 143 becomes smaller, so that the buckle 121 and the bent elastic piece 143 are completely separated.

[0263] It can be understood that in the case of the second elastic buckle assembly, the first part 140a arranged on the mounting seat 130 is a buckle, and the second part 140b arranged on the fourth end 120b of the second folding piece 120 is a bayonet structure, and the bayonet structure and the buckle can be clamped and matched. Compared with the first elastic buckle assembly 140, the second elastic buckle assembly 140 exchanges the positions of the buckle and the bayonet structure. Correspondingly, the fourth end 120b of the second folding piece 120 as a carrier of the bayonet structure can be provided with a structure matched with the bayonet structure, for example, the fourth end 120b of the second folding piece 120 is provided with a mounting groove, and the bayonet structure is arranged at the mounting groove. The specific structure of the second elastic buckle assembly can refer to the embodiments of the first elastic buckle assembly 140 described above.

[0264] For example, the bayonet structure can adopt an elastic extension mode to reduce the stress deformation failure of the buckle and the bayonet structure. The bayonet structure can include a sliding buckle piece and an elastic piece. The sliding buckle piece is movably arranged on the fourth end 120b of the second folding piece 120, one end of the elastic piece is arranged opposite to the sliding buckle piece, and the other end of the elastic piece is arranged opposite to the wall surface of the fourth end 120b of the second folding piece 120. The elastic piece is used to make the sliding buckle piece elastically extend; the elastic piece is in an extension state, the sliding buckle piece is in an extended position, and the elastic buckle assembly 140 is in a locked state or a separated state; the elastic piece is in a compression state, the sliding buckle piece is in a retracted position, and the elastic buckle assembly 140 is in a critical state. In the process of the sliding buckle piece and the buckle being in contact and buckling, the sliding buckle piece can have a larger sliding stroke under the action of the elastic piece, and neither the sliding buckle piece nor the buckle is prone to stress deformation failure, so that the reliability and stability of the watch buckle 100 are higher.

[0265] Exemplarily, the sliding buckle member comprises a sliding part and a first buckle part, the sliding part is slidingly installed on the fourth end 120b of the second folding member 120, the sliding part has opposite two ends along the sliding direction of the sliding part, the first buckle part is connected to one end of the sliding part, and the elastic member is arranged at the other end of the sliding part; the clasp can be clamped to the first buckle part. The sliding buckle member and the elastic member cooperate, the elastic member can make the sliding buckle member elastically stretch and contract during the clamping contact of the clasp and the sliding buckle member, the clasp and the sliding buckle member are not easy to be deformed and fail under force, and the reliability of the watch buckle 100 is high.

[0266] It can be understood that, when the first fixing band 200, the second fixing band 300 and the watch buckle 100 are arranged, the first fixing band 200, the second fixing band 300 and the watch buckle 100 can be arranged in the first implementation mode shown in FIGS. 1 and 2, or in the second implementation mode shown in FIG. 4.

[0267] When the first arc-shaped plate 111 and the second arc-shaped plate 122 are arranged, the first arc-shaped plate 111 and the second arc-shaped plate 122 can be arranged in the first implementation mode shown in FIGS. 6 and 10, or in the second implementation mode shown in FIG. 14.

[0268] When the elastic buckle assembly 140 is arranged, the elastic buckle assembly 140 can be arranged in the first implementation mode shown in FIGS. 6 and 7 (the first part 140a is the clasp structure 140c, and the second part 140b is the clasp 121), or in the second implementation mode (the first part 140a is the clasp 121, and the second part 140b is the clasp structure 140c).

[0269] When the clasp structure 140c is arranged, the clasp structure 140c can be arranged in an elastically stretchable mode or an elastically deformable mode. The elastically stretchable mode can be the first implementation mode of the clasp structure 140c with the sliding buckle member 141 and the elastic member 142 shown in FIGS. 6 to 8, or the second implementation mode of the clasp structure 140c with the sliding buckle member 141 and the elastic member 142 shown in FIGS. 18 to 23. The elastically deformable mode can be the first implementation mode of the clasp structure 140c in the form of the bending elastic sheet 143 shown in FIGS. 27 to 34, or the second implementation mode of the clasp structure 140c in the form of the bending elastic sheet 143 shown in FIGS. 35 to 42.

[0270] In some embodiments, referring to FIGS. 43 to 54, a receiving groove 600 can be arranged on the fixing band to accommodate part of the watch buckle 100.

[0271] Exemplarily, referring to FIGS. 47 to 52, a groove can be arranged on the fixing band to accommodate the folding member, so that the folding member can be partially or entirely accommodated in the groove.

[0272] Referring to FIG. 3 and FIG. 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 piece 120. When the second fixing band 300 is mounted on the second folding piece 120 and the first folding piece 110 and the second folding piece 120 are closed, the first folding piece 110 and the second folding piece 120 can be located inside the first fixing band 200 (as shown in FIG. 3), or the first folding piece 110 and the second folding piece 120 can be located inside the second fixing band 300 (as shown in FIG. 5).

[0273] For example, referring to FIG. 43-FIG. 46, FIG. 53 to FIG. 54, the accommodating groove 600 can be arranged on the side of the first fixing band 200 close to the mounting seat 130, and arranged on the inside of the first fixing band 200 to accommodate the first folding piece 110 and the second folding piece 120. The first folding piece 110 and the second folding piece 120 can be partially accommodated in the accommodating groove 600.

[0274] In some embodiments, referring to FIG. 43 to FIG. 54, the fixing band includes the first fixing band 200 and the second fixing band 300; the first end 200b of the first fixing band 200 is used to connect the watch buckle 100, the second end 200c of the first fixing band 200 is used to connect the device main body 500, and the first fixing band 200 and the second fixing band 300 are detachably connected through the watch buckle 100; the accommodating groove 600 is arranged on the inside of the first fixing band 200 close to the first end 200b of the first fixing band 200, and the accommodating groove 600 is used to accommodate at least 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 through the watch buckle 100, and at least part of the watch buckle 100 is located in the accommodating groove 600, thereby reducing the thickness of the overlapping part of the folding piece of the watch buckle 100 and the first fixing band 200, improving the wearing comfort, and making the appearance thinner and more beautiful.

[0275] In some embodiments, referring to FIG. 47 to FIG. 52, the accommodating groove 600 is a groove, and the accommodating groove 600 does not penetrate the first fixing band 200. In combination with FIG. 56, when the user wears the wearable device 1000, the first fixing band 200 and the second fixing band 300 are connected through the watch buckle 100, part (the first folding piece 110 and the second folding piece 120) of the watch buckle 100 is located in the accommodating groove 600 and is shielded by the first fixing band 200, and the part of the watch buckle 100 accommodated in the accommodating groove 600 is not easily visible from the outside, so that the first fixing band 200 has a better appearance.

[0276] In some embodiments, referring to FIG. 47 and FIG. 48, the corner of the inner wall 601 of the accommodating 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 accommodating groove 600 is the rounded corner 602, which can reduce stress concentration, reduce tearing damage, and improve structural reliability.

[0277] For example, the accommodating groove 600 can be rectangular, and the four corners of the rectangle can be provided with rounded corners 602, respectively. The first folding piece 110 and the second folding piece 120 of the watchband 100 can be partially located in the accommodating groove 600.

[0278] In some embodiments, referring to FIGS. 45-48, the length L1 and the width L2 of the accommodating groove 600 can be set with reference to the length and the width of the folding piece, so as to better accommodate the folding piece. For example, the width L2 of the accommodating groove 600 can be slightly wider than the width of the folding piece, or the same as the width of the folding piece.

[0279] For example, referring to FIGS. 45-48, the accommodating groove 600 can extend from the first end 200b of the first fixing band 200 to the middle of the first fixing band 200. In this way, the first folding piece 110 and the second folding piece 120 that are closed can be partially located in the accommodating groove 600.

[0280] For example, the accommodating 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. In this way, the accommodating groove 600 extends along the extension direction of the first fixing band 200 to both ends, so that the first folding piece 110 and the second folding piece 120 that are closed can be partially located in the accommodating groove 600, and the flexibility of the first fixing band 200 can be improved, and the wearing comfort can be improved.

[0281] FIGS. 49 and 50 are sectional views of the first fixing band along the length direction of the first fixing band. FIGS. 51 and 52 are sectional views 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 accommodating groove 600 is less than the thickness of the fixing band at a position where the accommodating groove 600 is not provided.

[0282] It should be noted that the above description takes the first fixing band 200 as an example, and it can be understood that the accommodating groove 600 can also be provided on the second fixing band 300, or the accommodating groove 600 can be provided on both the first fixing band 200 and the second fixing band 300.

[0283] It should be noted that the above description takes the accommodating groove 600 provided on the inner side of the fixing band as an example, and it can be understood that the accommodating 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.

[0284] It should be noted that the above description takes the accommodating groove 600 provided on the fixing band as an example, and it can be understood that the accommodating groove 600 can also have other structures.

[0285] It should be noted that the above description takes the accommodation groove 600 for accommodating the folding piece as an example, and it can be understood that the accommodation groove 600 can also be used to accommodate other structures of the watch buckle 100.

[0286] Referring to FIG. 55 and FIG. 56, FIG. 55 is a structural schematic diagram of a prior wearable device, and the thickness of the overlapping part of the watchband and the watch buckle folding piece is relatively thick, and the wearing comfort needs to be improved. FIG. 56 is a structural schematic diagram of a wearable device 1000, and at least part of the structure of the watch buckle 100 (such as the folding plate / folding piece) can be accommodated inside the fixed band when the user wears it, thereby reducing the thickness of the overlapping part of the folding piece and the watchband, improving the wearing comfort, and making the appearance thinner and more beautiful.

[0287] In some embodiments, referring to FIG. 43 to FIG. 46, the inner side of the second fixed band 300 is used to install the airbag 700, and the fixed nail hole 302 and the sliding nail hole 303 can be arranged on the second fixed band 300, and the sliding nail hole 303 can extend along the extension direction of the second fixed band 300. The fixed nail hole 302 and the sliding nail hole 303 are spaced apart along the extension direction of the second fixed band 300, the fixed nail hole 302 is used to buckle with the first protruding nail 701 of the airbag 700, and the sliding nail hole 303 is used to slide with the second protruding nail 702 of the airbag 700.

[0288] The airbag 700 is part of the blood pressure detection module, which has been described before. The first protruding nail 701 and the second protruding nail 702 of the airbag 700 are located on the same outer side of the airbag 700. The first protruding nail 701 is fixed on the second fixed band 300, and the second protruding nail 702 is movable relative to the second fixed band 300, thereby absorbing the relative misalignment of the second fixed band 300 in the watchband 400 and the airbag 700 due to different curvatures when bending, adapting to users with different wrist sizes, so that the airbag 700 can be tightly attached to the outer surface of the user's wrist, which is beneficial to the accurate detection of the blood pressure detection module.

[0289] For example, the fixed nail hole 302 can be arranged near the end of the second fixed band 300 connected to the device main body 500 (i.e., the third end 300b of the second fixed band 300), and the sliding nail hole 303 can be arranged near the free end 300a of the second fixed band 300.

[0290] As to the above-mentioned multiple implementation manners under different components, they can be freely selected and combined as needed.

[0291] For example, in an embodiment of a watch buckle, the first elastic buckle assembly 140 is used, and the first clamping structure 140c with the clamping piece 141 and the elastic piece 142 is used.

[0292] In another embodiment of the watch buckle, the first elastic buckle assembly 140 is adopted, and the second snap structure 140c with the sliding buckle 141 and the elastic piece 142 is adopted.

[0293] In another embodiment of the watch buckle, the second elastic buckle assembly 140 is adopted, and the first snap structure 140c with the sliding buckle 141 and the elastic piece 142 is adopted.

[0294] For example, in an embodiment of the watchband or wearable device, the first, second fixed bands 200, 300 and the watch buckle 100 shown in FIG. 1 and FIG. 2 are adopted, the first elastic buckle assembly 140 is adopted, and the first snap structure 140c with the sliding buckle 141 and the elastic piece 142 is adopted.

[0295] In another embodiment of the watchband or wearable device, the second, first fixed bands 200, 300 and the watch buckle 100 shown in FIG. 4 are adopted, the second elastic buckle assembly 140 is adopted, and the first snap structure 140c with the sliding buckle 141 and the elastic piece 142 is adopted.

[0296] In another embodiment of the watchband or wearable device, the first, second fixed bands 200, 300 and the watch buckle 100 shown in FIG. 1 and FIG. 2 are adopted, the first elastic buckle assembly 140 is adopted, and the first snap structure 140c with the bending elastic piece 143 is adopted.

[0297] Finally, it should be noted that the above description is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or replacements within the technical scope disclosed in the present application should be covered in 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 band, characterized by The fixing band comprises a first fixing band and a second fixing band; A first end of the first fixing band is used for connecting a watch buckle, and a second end of the first fixing band is used for connecting a device main body, the first fixing band and the second fixing band are detachably connected through the watch buckle; An accommodation groove is arranged on an inner side of the first fixing band near the first end of the first fixing band, and the accommodation groove is used for accommodating at least part of the watch buckle.

2. The securement band of claim 1, wherein, The accommodation groove is a groove.

3. The fixing tape according to claim 1 or 2, characterized by An inner wall corner of the accommodation groove is provided with a round corner.

4. The securement band of any one of claims 1 to 3, wherein, The accommodation groove extends from the first end of the first fixing band to a middle part of the first fixing band. Alternatively, the accommodation groove extends from the first end of the first fixing band to a second end of the first fixing band.

5. A watchband, characterized by The watch band comprises a watch buckle and the fixing band as claimed in any one of claims 1 to 4. The watch buckle comprises a first folding piece, a second folding piece, a mounting seat and a spring buckle assembly. The first folding piece comprises a first end and a second end, and the first end of the first folding piece is fixed to the mounting seat. The second folding piece comprises a third end and a fourth end, and the second end of the first folding piece and the third end of the second folding piece are rotationally connected to enable the first folding piece and the second folding piece to be closed or opened. The spring buckle assembly comprises a first part arranged on the mounting seat and a second part arranged on the fourth end of the second folding piece. When the first folding piece and the second folding piece are closed, the first part and the second part of the spring buckle assembly are locked.

6. The watchband of claim 5, wherein, When the first folding piece and the second folding piece are opened, the first part and the second part of the spring buckle assembly are separated. The first end of the first fixing band is rotationally connected to the mounting seat, and the second fixing band is arranged on the second folding piece.

7. The watchband of claim 6, wherein, When the first folding piece and the second folding piece are closed, the first folding piece and the second folding piece are arranged on an inner side of the first fixing band, and the accommodation groove is used for accommodating at least part of the first folding piece and the second folding piece.

8. The watchband according to any one of claims 5 to 7, characterized in that, The first folding piece comprises a first arc-shaped plate, and the second folding piece comprises a second arc-shaped plate.

9. The watchband according to any one of claims 5 to 8, characterized in that, The opposite ends of the first arc-shaped plate are the first end of the first folding piece and the second end of the first folding piece respectively, and the opposite ends of the second arc-shaped plate are the third end of the second folding piece and the fourth end of the second folding piece respectively. The second end of the first folding piece and the third end of the second folding piece are rotationally connected through a pin shaft. When the first folding piece and the second folding piece are closed, the first arc-shaped plate and the second arc-shaped plate are arranged along the direction of the pin shaft, and the extension directions of the first arc-shaped plate and the second arc-shaped plate are the same. The first arc-shaped plate is a plurality of first arc-shaped plates, and the plurality of first arc-shaped plates are arranged in the direction of the pin shaft. At least one second arc-shaped plate is arranged between the plurality of first arc-shaped plates when the first folding piece and the second folding piece are closed. The first part is a bayonet structure, and the second part is a buckle. The second fixing band has a plurality of clamping holes arranged in the extension direction of the second fixing band. A positioning ring is arranged at the fourth end of the second folding piece, and is used for penetrating through the second fixing band; A clamping part is arranged at the middle part of the second folding piece, and is clamped in one of the clamping holes.

10. A wearable device, comprising: The device comprises a device body and a watchband as claimed in any one of claims 5-9, wherein the second end of the first fixing band is connected to the device body, and the third end of the second fixing band is connected to the device body.

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