Wearable device

Abstract

The application discloses a wearable device, comprising: a device body; a first bandage connected to one side of the device body, the first bandage being provided with a first matching structure; a second bandage connected to the other side of the device body, the second bandage being provided with a second matching structure; an adjusting mechanism comprising a third matching structure, the first matching structure and the second matching structure being connected to the third matching structure; the first bandage, the second bandage and the device body enclosing a wearing space; in the case that the adjusting mechanism is in a first working mode, the first matching structure and the second matching structure are driven by the third matching structure, the first bandage and the second bandage are away from each other to increase the wearing space; in the case that the adjusting mechanism is in a second working mode, the first matching structure and the second matching structure are driven by the third matching structure, the first bandage and the second bandage are close to each other to reduce the wearing space.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of electronic products, and particularly relates to a wearable device. BACKGROUND

[0002] The wearable device refers to a portable device integrating a hardware device on clothes or made into a fitting by using various types of identification, sensing, connection and storage technologies. The wearable device brings great changes to our life and perception. The binding band is an important component of the wearable device, and functions to fix the wearable device on the user's body.

[0003] At present, the binding band of the wearable device is commonly designed in the buckle form of a backpack or the gear meshing mode with a locking mechanism. When a user uses the binding band with such a structure, the user needs to continuously operate the binding band until the tightness of the binding band meets the user's demand, and the operation process is relatively complicated and time-consuming. SUMMARY

[0004] The embodiment of the application aims to provide a wearable device, which can solve the problem of complicated and time-consuming operation of the existing wearable device.

[0005] In a first aspect, the embodiment of the application provides a wearable device, which comprises:

[0006] a device main body;

[0007] a first binding band, the first binding band being connected to one side of the device main body, and the first binding band being provided with a first matching structure;

[0008] a second binding band, the second binding band being connected to the other side of the device main body, and the second binding band being provided with a second matching structure;

[0009] an adjustment mechanism, comprising a third matching structure, the first matching structure and the second matching structure being connected to the third matching structure;

[0010] the first binding band, the second binding band and the device main body enclosing a wearing space;

[0011] when the adjustment mechanism is in a first working mode, the first matching structure and the second matching structure are driven by the third matching structure, the first binding band and the second binding band are away from each other to increase the wearing space; when the adjustment mechanism is in a second working mode, the first matching structure and the second matching structure are driven by the third matching structure, the first binding band and the second binding band are close to each other to reduce the wearing space.

[0012] In the embodiment of the present application, the wearable device comprises a device main body, a first band, a second band adjusting mechanism, the first band is connected to one side of the device main body, and the first band is provided with a first matching structure; the second band is connected to the other side of the device main body, and the second band is provided with a second matching structure; the adjusting mechanism comprises a third matching structure, and the first matching structure and the second matching structure are connected with the third matching structure; the first band, the second band and the device main body enclose a wearing space; in the case that the adjusting mechanism is in a first working mode, the first matching structure and the second matching structure are driven by the third matching structure, the first band and the second band are away from each other to increase the wearing space; in the case that the adjusting mechanism is in a second working mode, the first matching structure and the second matching structure are driven by the third matching structure, the first band and the second band are close to each other to reduce the wearing space. In this way, when the wearable device needs to be worn, the user only needs to put the adjusting mechanism in the first working mode, so as to increase the wearing space; and when the adjusting mechanism is in the second working mode, the band can automatically reduce the wearing space until the wearing space is reduced to fit the user's body part, so that the user does not need to continuously operate the band during the wearing process, and the self-tightening can be completed, which is simple and convenient. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 A structural schematic diagram of a wearable device of an embodiment of the present application is shown;

[0014] Figure 2 An exploded schematic diagram of a band device of an embodiment of the present application is shown;

[0015] Figure 3 A schematic diagram of a center axis of an embodiment of the present application is shown;

[0016] Figure 4 A sectional schematic diagram of a band device of an embodiment of the present application is shown;

[0017] Figure 5 A structural schematic diagram of a first shell of an embodiment of the present application is shown;

[0018] Figure 6 A sectional schematic diagram of a band device of an embodiment of the present application is shown;

[0019] Figure 7 An exploded schematic diagram of a band device of an embodiment of the present application is shown;

[0020] Figure 8 A sectional schematic diagram of a band device of an embodiment of the present application is shown;

[0021] Figure 9 A structural schematic diagram of a second shell of an embodiment of the present application is shown.

[0022] REFERENCE SIGNS

[0023] 10 - first strap; 101 - first rack; 20 - second strap; 201 - second rack; 30 - second housing; 301 - second through hole; 302 - guide rail slot; 40 - first housing; 401 - first through hole; 402 - mounting slot; 50 - central shaft; 501 - fine adjustment knob; 502 - locking tooth; 503 - support shaft; 60 - strap gear; 601 - gear; 602 - coil spring slot; 603 - central hole; 70 - coil spring; 80 - second elastic member; 90 - meshing tooth. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the protection scope of the present application.

[0025] The terms "first", "second", and the like in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein. In addition, "and / or" in the specification and claims indicates at least one of the connected objects, and the character " / ", generally indicates that the front and rear associated objects are in a "or" relationship.

[0026] The control method provided by the embodiments of the present application will be described in detail below with reference to the drawings and specific embodiments and their application scenarios.

[0027] Please refer to Figures 1 to 9 The wearable device provided by the embodiments of the present application comprises:

[0028] A device body;

[0029] A first strap 10 connected to one side of the device body, the first strap 10 being provided with a first matching structure;

[0030] A second strap 20 connected to the other side of the device body A, the second strap 20 being provided with a second matching structure;

[0031] An adjusting mechanism comprising a third matching structure, the first matching structure and the second matching structure being connected to the third matching structure;

[0032] The first strap, the second strap and the device body enclose a wearing space;

[0033] Wherein, in the case that the adjusting mechanism is in the first working mode, the first binding belt 10 and the second binding belt 20 are driven away from each other by the third cooperation structure to increase the wearing space; in the case that the adjusting mechanism is in the second working mode, the first binding belt 10 and the second binding belt 20 are driven towards each other by the third cooperation structure to decrease the wearing space.

[0034] Exemplarily, as shown in Figure 1 , A shows the device body which is the functional area of the wearable device (such as VR glasses), and B shows the first binding belt 10, the second binding belt 20 and the adjusting mechanism. When the adjusting mechanism is in the first working mode, the user only needs to apply force along the direction of the arrow shown in the figure by hand, that is, to pull apart the first binding belt 10 and the second binding belt 20 to increase the wearing space; after the user releases the hand, the adjusting mechanism is in the second working mode, the third cooperation structure drives the first cooperation structure and the second cooperation structure to automatically shrink the first binding belt 10 and the second binding belt 20 until they are fixed on the user's body (such as the head), so that the wearing space is reduced to fit the user's body part, and the user does not need to continuously adjust the tightness of the binding belt. Figure 1

[0035] In the above embodiment, when the wearable device needs to be worn, the user only needs to put the adjusting mechanism in the first working mode to increase the wearing space; when the adjusting mechanism is in the second working mode, the binding belt can automatically reduce the wearing space until the wearing space is reduced to fit the user's body part, so that the user does not need to continuously operate the binding belt during the wearing process, and the self-tightness of the binding belt can be completed, which is simple and convenient to operate.

[0036] In a specific embodiment of the present application, the first cooperation structure includes a first rack arranged at the tail of the first binding belt 10, and the second cooperation structure includes a second rack arranged at the tail of the second binding belt 20.

[0037] The third cooperation structure includes a binding belt gear 60, which is clamped between the first rack and the second rack and is engaged with the first rack and the second rack.

[0038] As shown in Figure 6 , the tail ends of the first binding belt 10 and the second binding belt 20 are designed with a hollow groove of a certain length for placing the binding belt gear 60. The upper end of the hollow groove of the first binding belt 10 is designed with a first rack 101, and the lower end of the hollow groove of the second binding belt 20 is designed with a second rack 201, and the binding belt gear 60 is engaged with the first rack and the second rack at the same time. The end portions of the first binding belt 10 and the second binding belt 20 can be connected with the device to be fixed (such as VR glasses and the like) to form a closed loop. Among them, Figure 6 only part of the tail of the binding belt is shown. ​

[0039] It should be noted that the mechanical transmission structure of the gear and the rack of the first, second and third matching structures is only an example, and other transmission matching structures can also be selected in specific implementation.

[0040] For example, in some optional implementations, the third matching structure is a friction wheel, and the first and second matching structures are grinding surface structures. In this way, the first and second bands 10 and 20 can be moved relative to each other by the friction force between the friction wheel and the grinding surface structures.

[0041] For example, in some other optional implementations, the third matching structure can be a winding shaft, and the first and second matching structures are winding connection ends fixedly connected to the winding shaft. When the winding shaft rotates in a first direction, the winding ends of the first and second bands 10 and 20 are wound on the winding shaft, so that the wearing space is reduced. When the winding shaft rotates in a second direction, the winding ends of the first and second bands 10 and 20 are unwound from the winding shaft, so that the wearing space is increased.

[0042] In a specific embodiment, the adjusting mechanism includes a rotating structure, a first elastic member connected to the rotating structure, and the third matching structure arranged on the rotating structure.

[0043] When the rotating structure rotates in the first direction to a preset position, the first elastic member is in a first elastic state of being stretched. In the process of the first elastic member recovering from the first elastic state to a second elastic state of natural extension and contraction, the third matching structure is driven to rotate in the second direction.

[0044] Here, the second elastic state can be understood as a natural relaxation state without external force.

[0045] In this embodiment, when the first and second bands 10 and 20 are pulled by two opposite external forces respectively, the first and second matching structures drive the rotating structure to rotate in the first direction to a preset position. At this time, the first elastic member is in a first elastic state of being stretched, and the wearing space formed by the device body A, the first and second bands 10 and 20 has an increased inner diameter, which is convenient for the user to wear. When the external forces acting on the first and second bands 10 and 20 are removed, the elastic force of the first elastic member drives the rotating structure to rotate in the second direction, and the wearing space formed by the first and second bands 10 and 20 gradually decreases until the bands are fixed on the user's body (such as the head). At this time, due to the support of the body, the first elastic member is in a third elastic state of being stretched, so that the band device is fixed on the user's body by the elastic force. Without the support of the body, the first elastic member recovers from the first elastic state to the second elastic state of natural extension and contraction.

[0046] In this way, when the bandage device needs to be used, the user only needs to pull the first bandage 10 and the second bandage 20 in opposite directions at the same time, so as to increase the inner diameter enclosed by the bandages, thereby facilitating the user to wear; after the user wears the bandage device and releases the hands, the first bandage 10 and the second bandage 20 are automatically contracted and fixed on the user's body, which is simple and convenient to operate and reliable in fixation.

[0047] In an embodiment of the present application, the first elastic member comprises a coil spring 70, the outer side port 701 of the coil spring 70 is fixedly connected with the rotating structure, and the inner side port 702 of the coil spring 70 is fixedly connected with the support shaft 503 of the rotating structure.

[0048] As shown in Figure 7 and Figure 8 , the bandage gear 60 comprises a gear 601, a coil spring groove 602 and a center hole 603; the gear 601 is engaged with the first rack of the first bandage 10 and the second rack of the second bandage 20 at the same time. The coil spring groove 602 is arranged on the side of the gear 601 away from the gear 601, and is used for accommodating the coil spring 70. The support shaft 503 of the center shaft 50 penetrates through the center hole 603 of the bandage gear 60, so that the bandage gear 60 can rotate around the center shaft 50; the outer side port 701 of the coil spring 70 is fixed with the inner side wall of the coil spring groove 602, and the inner side port 702 of the coil spring 70 is fixed on the support shaft 503 of the center shaft 50.

[0049] It should be noted that, in the process of pulling the first bandage 10 and the second bandage 20 in opposite directions, the first rack 101 and the second rack 102 drive the gear 601 to rotate around the support shaft 503 of the center shaft 50 in the first direction (counterclockwise based on the installation mode shown in Figure 7 , when the gear 601 rotates, it will drive the coil spring 70 to rotate and contract. When the user releases the hands, the coil spring 70 will drive the gear 601 to rotate in the second direction (clockwise based on the installation mode shown in Figure 7 , thereby driving the first bandage 10 and the second bandage 20 to move relatively in the direction of approaching each other, until the bandage device is fixed on the user's body.

[0050] Further, since different users have different needs for the tightness of the bandage. The above embodiment can only provide the same tightness. In order to adapt to the needs of different users, in an embodiment of the present application, the rotating structure further comprises a first clamping structure and a support shaft 503, and the first clamping structure is arranged on the support shaft 503; the wearable device further comprises a first housing 40, and the first housing 40 is provided with a second clamping structure, and the first clamping structure and the second clamping structure are clamped or separated.

[0051] It should be noted that the third matching structure in the above embodiment rotates around the support shaft 503.

[0052] In this embodiment, by rotating the support shaft 503, the elastic state of the first elastic element can be adjusted, causing the first elastic element to drive the rotating structure to rotate a first distance in a first direction. The rotation of the rotating structure further drives the first strap 10 and the second strap 20 to move a second distance in a distance away, thereby adjusting the tightness of the straps. Furthermore, when the external force is removed, when the elastic force of the first elastic element drives the rotating structure to rotate in a second direction, the engagement of the first and second locking structures prevents the first elastic element from returning to its naturally stretched second elastic state, keeping it in the fourth elastic state corresponding to the tightness adjusted by the user. Thus, the same user only needs to adjust the tightness when using the strap device for the first time, and does not need to adjust the tightness of the strap device when using it again. This simplifies user operation and meets the needs of different users.

[0053] In one embodiment of this application, the first snap-fit ​​structure includes a locking tooth 502 disposed on the support shaft 503; the second snap-fit ​​structure includes a meshing tooth 90 disposed on the first housing 40, wherein the locking tooth 502 snaps into or separates from the meshing tooth 90.

[0054] like Figure 3 As shown, the central shaft 50 includes a support shaft 503 of a rotating structure and locking teeth 502 disposed on the support shaft 503. The locking teeth 502 surround the outer periphery of the support shaft 503 and include spaced protrusions and recesses. When no external force is applied to the support shaft 503, the locking teeth 502 engage with the fourth mating structure through the recesses, thereby fixing and maintaining the elastic state of the first elastic element and the rotational position of the rotating structure. When an external force rotates the support shaft 503, the locking teeth 502 rotate with the support shaft 503, changing the engagement position between the locking teeth 502 and the second engagement structure.

[0055] In one embodiment of this application, the first housing 40 is provided with a mounting groove, and the second snap-fit ​​structure further includes a second elastic member 80;

[0056] The second elastic element 80 is disposed in the mounting groove. One end of the second elastic element 80 is fixedly connected to the first housing 40, and the other end is fixedly connected to the meshing tooth 90. Under the elastic force of the second elastic element 80, the locking tooth 502 engages with the meshing tooth 90.

[0057] The mounting groove is used to accommodate the second elastic element 80 and the meshing tooth 90, and serves as a guide to allow the second elastic element 80 and the meshing tooth 90 to move along the length of the mounting groove.

[0058] In this embodiment, when the support shaft 503 is rotated by external force, the locking tooth 502 rotates with the support shaft 503. During the rotation of the support shaft 503, the protrusion of the locking tooth 502 squeezes the meshing tooth 90. The meshing tooth 90 retracts into the mounting groove by compressing the second elastic member 80. When the concave part of the locking tooth 502 is opposite to the meshing tooth 90, the meshing tooth 90 extends out of the mounting groove and engages with the first snap-fit ​​structure under the elastic force of the second elastic member 80.

[0059] In one specific embodiment of this application, the mounting groove 402 includes: a first mounting groove and a second mounting groove disposed on the first housing 40;

[0060] A second elastic element 80 is provided in the first mounting groove and the second mounting groove respectively, and one end of the two second elastic elements 80 is fixedly connected to the first housing 40, and the other end is fixedly connected to a meshing tooth 90 respectively; the two meshing teeth 90 are arranged opposite to each other at both ends of the fourth mating structure.

[0061] like Figure 4 and Figure 5 As shown, the first mounting groove and the second mounting groove are arranged opposite to each other, and the locking tooth 502 is clamped between the two meshing teeth 90, which can improve the stability of the locking state.

[0062] Optionally, the second elastic element 80 may be specifically a spring, rubber, or other components.

[0063] In another embodiment of this application, the fourth mating structure includes: a plurality of grooves (not shown) disposed on the support shaft 503, and the snap-fit ​​structure includes: an elastic bead (not shown), the elastic bead being connected to the first housing 40; when the elastic bead is located in one of the grooves, the snap-fit ​​structure is snap-fitted to the fourth mating structure.

[0064] like Figure 4 and Figure 5 In a specific embodiment of this application, the rotating structure further includes a fine-tuning knob 501. A first through hole 401 is provided on the first housing 40. The first end of the support shaft 503 extends out of the first housing 40 through the first through hole 401 and is fixedly connected to the fine-tuning knob 501.

[0065] In this embodiment, the second through hole 401 can support the first end of the support shaft 503 of the central shaft 50. The first end is connected to a fine-tuning knob 501. In this way, the user can rotate the support shaft 503 by using the fine-tuning knob 501 to adjust the elastic state of the first elastic element. This causes the first elastic element to drive the rotating structure to rotate a first distance in a first direction. The rotation of the rotating structure further drives the first strap 10 and the second strap 20 to move a second distance away from each other, thereby adjusting the tightness of the straps. The first distance and the second distance may be the same or different.

[0066] The working principle of the banding device during wearing is introduced based on the above-mentioned Figures 1 to 9 embodiment, mainly including:

[0067] Firstly, when the user wears the device, the coil spring 70 is in a tightened state.

[0068] Secondly, under the action of the elasticity of the second elastic member 80, the engaging teeth 90 are clamped on the lock teeth 502, at this time, the inner side port 702 of the coil spring 70 is fixed and cannot rotate, and the outer side port 701 of the coil spring 70 drives the banding gear 60 to rotate, and the banding is retracted and fixed on the user's body.

[0069] Thirdly, when the user thinks that the force at this time is not comfortable, the user can manually rotate the fine adjustment knob 501, and when the force applied to the fine adjustment knob 501 by the user reaches a certain degree, the lock teeth 502 can compress the second elastic member 80 at the rear end of the engaging teeth 90. At this time, the fine adjustment knob 501 drives the inner side port 702 of the coil spring 70 fixed on the support shaft 503 to rotate, changes the elasticity of the coil spring 70, and thus fine adjusts the tightness of the banding device, so that the user feels comfortable.

[0070] Fourthly, when the same user uses the device for the second time, since the position of the fine adjustment knob 501 is not changed, the tightness of the banding at this time remains the state of the first use, and at this time, the user also feels comfortable.

[0071] From the above process, it can be seen that the same user only needs to adjust the tightness according to the demand during the first use of the banding device, and the tightness of the banding device does not need to be adjusted during the subsequent use, so that the use demand of the user can be met.

[0072] In an embodiment of the present application, the wearable device further comprises: a second shell 30, the second shell 30 is provided with a guide rail groove 302; the first banding and the second banding are movably arranged in the guide rail groove 302.

[0073] As shown in the figure, Figure 9 The two ends of the second shell 30 are respectively provided with a guide rail groove 302, so that the first banding 10 and the second banding 20 can smoothly slide in the guide rail groove 302.

[0074] In an embodiment of the present application, the second shell 30 is further provided with a second through hole 301, the second end of the support shaft 503 of the rotating structure extends out of the second shell 30 through the second through hole 301, and the second end is provided with a limiting edge, which abuts against the outside of the second through hole 301.

[0075] As shown in the figure, Figure 4As shown, the second shell 30 is also provided with a second through hole 301 for supporting the second end of the supporting shaft 503 of the central shaft 50, and a limiting edge extending outwardly to resist the outside of the second through hole 301 to prevent the supporting shaft 503 from coming out.

[0076] As shown, the first shell 40 is a front shell and the second shell 30 is a rear shell, the first shell 40 is connected with the second shell 30 by buckling, and the rotating structure, the first elastic member, the first clamping structure and the second clamping structure are arranged inside the shell. Figure 2 Figure 7 As shown, the first shell 40 is a front shell and the second shell 30 is a rear shell, the first shell 40 is connected with the second shell 30 by buckling, and the rotating structure, the first elastic member, the first clamping structure and the second clamping structure are arranged inside the shell.

[0077] In the case where no external force is applied to the first strap 10 and the second strap 20, the first strap 10 and the second strap 20 are retracted in the guide groove 302 of the second shell 30, and the coil spring 70 is in a natural relaxation state. When the user needs to wear the strap device, the user only needs to hold the first strap 10 and the second strap 20 and pull them out in opposite directions to increase the overall inner diameter of the straps, which is convenient for the user to wear. When the user releases his hands, the coil spring 70 will drive the gear 601 to rotate, thereby driving the first strap 10 and the second strap 20 to move towards each other until the strap device is fixed on the user's body.

[0078] Based on the above embodiment, the same user only needs to apply force along the direction indicated by the arrow in the figure to pull apart the first strap 10 and the second strap 20; after the user releases his hands, the first strap 10 and the second strap 20 automatically contract and are fixed on the user's body (such as the head). Since different users have different stress tolerance levels, the same user can adjust the tightness of the strap device by adjusting the micro-adjustment knob 501 when using the wearable device for the first time, and the tightness of the strap device does not need to be adjusted when using the strap device again in the future, which can meet the user's use requirements. Figure 1

[0079] ​​It should be noted that, in the present document, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises... a" does not, without more constraints, exclude the presence of additional identical elements in the process, method, article, or apparatus that comprises the element. Furthermore, it is to be understood that the method and apparatus of the present application can be carried out by more than one process, method, article, or apparatus either simultaneously, concurrently, or with intervening action that are carried out at the same time, either in a simultaneous fashion or in a fashion that is interleaved in time. For example, the described methods can be performed in a different order from that described, and / or various steps can be combined or omitted, and / or additional steps can be added, without departing from the scope of the present application. Also, features described with respect to certain examples can be combined in other examples.

[0080] From the above description of the embodiments, it is apparent that the above-described method of the embodiments can be realized by means of software and general-purpose hardware platforms, and of course, can also be realized by hardware, but in many cases, the former is a better embodiment. Based on such an understanding, the technical solutions of the present application can be embodied in the form of a software product, which is stored in a storage medium (such as a ROM / RAM, a magnetic disk, or an optical disk) and includes a number of instructions for causing a terminal (which can be a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the methods described in the various embodiments of the present application.

[0081] The embodiments of the present application are described above with reference to the accompanying drawings, but the present application is not limited to the above-described specific embodiments, and the above-described specific embodiments are merely illustrative, rather than limiting, and a person of ordinary skill in the art can make many forms under the inspiration of the present application without departing from the scope of the present application and the scope protected by the claims.

Claims

1. A wearable device, comprising: The wearable device comprises: a device body; a first strap connected to one side of the device body, the first strap being provided with a first matching structure; a second strap connected to the other side of the device body, the second strap being provided with a second matching structure; an adjustment mechanism comprising a third matching structure, the first matching structure and the second matching structure being connected to the third matching structure; the first strap, the second strap and the device body enclosing a wearing space; wherein, in the case that the adjustment mechanism is in a first working mode, the first matching structure and the second matching structure drive the third matching structure, the first strap and the second strap move away from each other to increase the wearing space, the first working mode being that the first strap and the second strap are respectively subjected to a pulling force in opposite directions; in the case that the adjustment mechanism is in a second working mode, the third matching structure drives the first matching structure and the second matching structure, the first strap and the second strap move towards each other to reduce the wearing space, the second working mode being that the first strap and the second strap are not subjected to an external force; the first matching structure comprises a first rack provided at the tail of the first strap, and the second matching structure comprises a second rack provided at the tail of the second strap; the third matching structure comprises a strap gear, the strap gear comprising a coil spring slot and a center hole; the adjustment mechanism comprises a rotating structure and a first elastic member connected to the rotating structure, and the strap gear is arranged on the rotating structure; the rotating structure comprises a fine adjustment knob, a support shaft and a lock tooth, the lock tooth being arranged around the outer periphery of the support shaft, and the fine adjustment knob being arranged at the first end of the support shaft; the support shaft passes through the center hole of the strap gear, so that the strap gear can rotate around the support shaft; the first elastic member comprises a coil spring, the outer side port of the coil spring being fixed to the inner side wall of the coil spring slot, and the inner side port of the coil spring being fixed to the support shaft; the wearable device further comprises a first shell, the first shell being provided with a second clamping structure, and the lock tooth being clamped or separated from the second clamping structure; in the case that the adjustment mechanism is in the first working mode, the first rack and the second rack drive the strap gear to rotate in a first direction around the support shaft, and when the strap gear rotates, the coil spring rotates and tightens; in the case that the adjustment mechanism is in the second working mode, the coil spring drives the strap gear to rotate in a second direction under the action of the elastic force of the coil spring, so as to drive the first strap and the second strap to move towards each other; the fine adjustment knob is used to adjust the elastic state of the first elastic member, the support shaft is rotated through the fine adjustment knob, the first elastic member drives the rotating structure to rotate in a first direction by a first distance, and the rotation of the rotating structure further drives the first strap and the second strap to move in a second direction by a second distance.

2. The wearable device of claim 1, wherein, the strap gear is clamped between the first rack and the second rack and is in meshing connection with the first rack and the second rack.

3. The wearable device of claim 1, wherein, Further comprising: when the rotating structure rotates to a preset position in a first direction, the first elastic member is in a first elastic state of being stretched; in the process of the first elastic member recovering from the first elastic state to a second elastic state of natural expansion and contraction, the third matching structure is driven to rotate in a second direction.

4. The wearable device of claim 1, wherein, the second clamping structure comprises engagement teeth arranged on the first shell, and the lock teeth are in clamping or separation with the engagement teeth.

5. The wearable device of claim 4, wherein, the first shell is provided with a mounting groove, and the second clamping structure further comprises a second elastic member; wherein the second elastic member is arranged in the mounting groove, one end of the second elastic member is fixedly connected with the first shell, and the other end is fixedly connected with the engagement teeth; under the elastic force of the second elastic member, the lock teeth are clamped with the engagement teeth.

6. The wearable device of claim 1, wherein, the first shell is provided with a first through hole, and the first end of the supporting shaft extends out of the first shell through the first through hole.

7. The wearable device of claim 3, wherein, The wearable device further comprises a second shell, and the second shell is provided with a guide rail groove. the first strap and the second strap are movably arranged in the guide rail groove.

8. The wearable device of claim 7, wherein, the second shell is further provided with a second through hole, the second end of the supporting shaft of the rotating structure extends out of the second shell through the second through hole, and the second end is provided with a limiting edge resisting outside the second through hole.

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