Wearable device

Abstract

Provided in the present application is a wearable device. The wearable device comprises a panel assembly, a middle frame assembly, a bottom shell assembly and a crown assembly, wherein the panel assembly and the bottom shell assembly are respectively arranged at the top end and the bottom end of the middle frame assembly, and the crown assembly is mounted on the middle frame assembly; the middle frame assembly comprises an appearance layer and a structural layer, the structural layer being nested inside the appearance layer; and in the thickness direction of the wearable device, the appearance layer is provided with a plurality of antenna slot structures, the plurality of antenna slot structures including a first slot structure and a second slot structure, the slot width of the first slot structure being between 0.1 mm and 0.3 mm, the slot width of the second slot structure being between 0.8 mm and 1.5 mm, and the second slot structure being located in a mounting position of the crown assembly. The wearable device (such as a smart watch) provided in the present application has a good multi-band antenna performance and a better appearance effect.

Description

Wearable device

[0001] The present application claims priority to the Chinese patent application No. 202411375878.3, filed on September 29, 2024, entitled "Wearable device", the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] The present application relates to the field of terminal devices, and more particularly, to a wearable device. BACKGROUND

[0003] With the continuous development of wearable devices (such as smartwatches), wearable devices are increasingly popular with users due to their portability and intelligence. The improvement of the antenna performance of wearable devices, especially smartwatches, which can realize intelligent calling, has always been a difficult problem in the industry.

[0004] In the related art, the watch case of a smartwatch is usually a metal watch case, which is the antenna structure of the smartwatch. However, in order to make the appearance of the smartwatch have an integrated effect, the metal watch case is usually designed as a seamless structure. However, the seamless structure design of the metal watch case may affect the performance of the multi-band antenna. Therefore, in order to meet higher and more complex antenna requirements, the metal watch case needs to be divided into multiple segments. Traditional common devices such as mobile phones have relatively wide slit widths. Such a wide slit cannot obviously meet the requirements in the field of smartwatches with higher decoration demands.

[0005] Therefore, it is necessary to provide a smartwatch that meets both antenna requirements and appearance requirements. SUMMARY

[0006] The present application provides a wearable device (such as a smartwatch) that has good multi-band antenna performance and good appearance effect.

[0007] In a first aspect, a wearable device is provided, which includes a panel assembly, a middle frame assembly, a bottom shell assembly, and a crown assembly, wherein: the panel assembly and the bottom shell assembly are respectively arranged at the top end and the bottom end of the middle frame assembly, the panel assembly, the middle frame assembly, and the bottom shell assembly form a containing cavity for accommodating electronic devices therebetween, and the crown assembly is mounted on the middle frame assembly; the middle frame assembly includes an appearance layer and a structure layer, the structure layer is nested in the appearance layer, the appearance layer is a metal appearance layer, and the structure layer is an insulating structure layer; a plurality of antenna slot structures are arranged on the appearance layer in the thickness direction of the wearable device, and part of the structure layer passes through the plurality of antenna slot structures and is exposed; the plurality of antenna slot structures include a first slot structure and a second slot structure, the opening width of the first slot structure is between 0.1 mm and 0.3 mm, the opening width of the second slot structure is between 0.8 mm and 1.5 mm, and the second slot structure is located at the mounting position of the crown assembly.

[0008] Exemplarily, the first slot structure can also be referred to as a micro slot structure in the present application, the opening width of the micro slot structure is between 0.1 mm and 0.3 mm, and the opening width of the micro slot structure can be, for example, 0.1 mm, 0.2 mm, or 0.3 mm. The second slot structure can also be referred to as a fusion slot structure in the present application, the opening width of the fusion slot structure is between 0.8 mm and 1.5 mm, and the opening width of the fusion slot structure can be, for example, 0.8 mm, 0.9 mm, 1 mm, 1.1 mm, 1.2 mm, 1.3 mm, 1.4 mm, or 1.5 mm.

[0009] Exemplarily, the containing cavity formed between the panel assembly, the middle frame assembly, and the bottom shell assembly can accommodate a battery assembly and a control assembly, etc. The battery assembly can be used to provide power for the panel assembly and part of the structure in the control assembly, and the control assembly can be used to control the wearable device to realize different functions.

[0010] The wearable device provided by the embodiments of the present application can include a smart watch or a smart bracelet, etc. The appearance layer of the wearable device can be a metal appearance layer, and the structure layer of the wearable device can be an insulating structure layer, so that the appearance layer can serve as an antenna radiator of the wearable device. By setting the appearance layer as a metal appearance layer and setting the structure layer as an insulating structure layer, the appearance effect and texture of the middle frame assembly can be ensured to be good. By arranging the structure layer on the inner wall of the appearance layer, the metal appearance layer and the metal devices in the containing cavity of the wearable device can be isolated, so as to meet the clearance requirement of the antenna when the appearance layer serves as the antenna radiator, thereby reducing the influence of the metal devices in the containing cavity on the antenna performance and improving the antenna performance of the wearable device.

[0011] In addition, a plurality of slit structures can be formed on the appearance layer of the middle frame assembly of the wearable device, and the appearance layer can be segmented, so that the appearance layer (antenna radiator) can carry different signal bands of different devices (for example, GPS, Bluetooth, WIFI, 4G, etc.), thereby optimizing the communication quality of the wearable device.

[0012] In addition, the second slit structure with a larger slit width can be arranged at the mounting position of the crown assembly, and the second slit structure can be shielded by the crown assembly, so that the second slit structure is not directly exposed and observed by the user; the first slit structure with a smaller slit width can be exposed and can be designed in different appearance colors, so that the wearable device has a better appearance effect.

[0013] In combination with the first aspect, in some implementations of the first aspect, the width between adjacent first slit structures is between 0.8mm and 1.5mm.

[0014] For example, the width between adjacent micro-slit structures (i.e., the width of the metal part between adjacent micro-slit structures) is 0.8mm, 0.9mm, 1mm, 1.1mm, 1.2mm, 1.3mm, 1.4mm, or 1.5mm.

[0015] In the embodiments of the present application, the spacing between adjacent first slit structures can meet the radiation requirements of different signal bands of different devices (for example, GPS, Bluetooth, WIFI, 4G, etc.), and avoid affecting the communication quality of the wearable device.

[0016] In combination with the first aspect, in some implementations of the first aspect, the side of the middle frame assembly is provided with a mounting hole for mounting the crown assembly, and the mounting hole is in communication with the second slit structure.

[0017] In the embodiments of the present application, the second slit structure can be arranged in fusion with the mounting hole for mounting the crown assembly, that is, the mounting hole can be punched through on one side or both sides of the middle frame assembly along the central axis direction to form the second slit structure, and the processing procedure can be simplified.

[0018] In combination with the first aspect, in some implementations of the first aspect, along the thickness direction of the wearable device, a decorative slit structure is further arranged on the appearance layer, the decorative slit structure is located on the surface of the appearance layer and penetrates part of the appearance layer, and the slit width of the decorative slit structure is equal to the slit width of the first slit structure.

[0019] Exemplarily, the opening width of the decorative seam structure is equal to the opening width of the first slit structure, which can be between 0.1 mm and 0.3 mm, for example, the opening width of the decorative seam structure can be 0.1 mm, 0.2 mm or 0.3 mm.

[0020] In the embodiments of the present application, the decorative seam structure can be formed on the outer surface of the appearance layer, which is a non-through seam, that is, the decorative seam structure can pass through part of the appearance layer but not the whole appearance layer, that is, a groove can be formed on the surface of the appearance layer to form a decorative seam structure similar to the through seam structure, thereby increasing the appearance aesthetics of the wearable device.

[0021] With reference to the first aspect, in some implementations of the first aspect, the decorative seam structure is arranged between adjacent first slit structures.

[0022] Exemplarily, if the wearable device is provided with two first slit structures, the decorative seam structure can be located between the two first slit structures, and the distance between the decorative seam structure and the two first slit structures is equal, thereby increasing the appearance aesthetics of the wearable device.

[0023] With reference to the first aspect, in some implementations of the first aspect, the decorative seam structure is arranged on one side of the first slit structure, and the width between the decorative seam structure and the adjacent first slit structure is equal to the width between the adjacent first slit structures.

[0024] Exemplarily, the wearable device can include a plurality of first slit structures, and the decorative seam structure can be arranged on one side of the plurality of first slit structures and symmetrically arranged with other first slit structures, thereby further increasing the appearance aesthetics of the wearable device.

[0025] Exemplarily, the width between the decorative seam structure and the adjacent first slit structure is equal to the width between the adjacent first slit structures, which can be between 0.8 mm and 1.5 mm, for example, the width between the decorative seam structure and the adjacent first slit structure can be 0.8 mm, 0.9 mm, 1 mm, 1.1 mm, 1.2 mm, 1.3 mm, 1.4 mm or 1.5 mm.

[0026] With reference to the first aspect, in some implementations of the first aspect, the inner wall of the appearance layer is provided with a connecting portion extending into the accommodation cavity, and the structure layer is provided with a mounting portion matched with the connecting portion, one end of the connecting portion is arranged in the mounting portion, and the other end of the connecting portion is exposed outside the mounting portion.

[0027] In the embodiments of the present application, the inner wall of the appearance layer of the middle frame assembly can be provided with a connecting portion, and the structural layer of the middle frame assembly can be provided with a mounting portion matched with the connecting portion, so that the connecting portion and the mounting portion are matched for use, and the connection stability between the appearance layer and the structural layer is increased.

[0028] In a possible implementation, on the side of the connecting portion exposed to the mounting portion, a first groove is arranged between part of the structure of the connecting portion and the mounting portion; and a first sealing member is arranged in the first groove, the first sealing member being in sealing connection with the first groove, and a second waterproof interface being formed between the first sealing member and the first groove.

[0029] By arranging the first groove and the first sealing member in the first groove, the second waterproof interface is formed between the connecting surface of the first sealing member and the first groove, so that after the liquid such as water breaks through the first waterproof interface, the second waterproof interface can prevent the liquid from entering the device main body, and the waterproof performance of the electronic device can be improved.

[0030] With reference to the first aspect, in some implementations of the first aspect, the connecting portion includes a first connecting segment and a second connecting segment, one end of the first connecting segment is connected to the inner wall of the appearance layer, and the other end of the first connecting segment extends to the inside of the appearance layer; one end of the second connecting segment is connected to the end of the first connecting segment away from the appearance layer, and the other end of the second connecting segment extends away from the first connecting segment along the thickness direction of the wearable device.

[0031] In the embodiments of the present application, by arranging the connecting portion to include the first connecting segment and the second connecting segment, and arranging the first connecting segment and the second connecting segment in different directions, the assembly with the circuit board of the wearable device can be facilitated, the assembly difficulty is reduced, and the assembly stability is improved.

[0032] With reference to the first aspect, in some implementations of the first aspect, the appearance layer further includes a plurality of pull glue structures, the plurality of pull glue structures are located on one side or both sides of the at least one antenna slot structure, and the pull glue structures are used to increase the bonding force between the appearance layer and the structural layer.

[0033] In the embodiments of the present application, by arranging the plurality of pull glue structures, the deformation of the appearance layer and the structural layer during nano-injection molding (NMT) can be reduced. In addition, the contact path in the thickness direction of the middle frame assembly between the long appearance layer and the structural layer is also extended, that is, the waterproof path between the appearance layer and the structural layer is extended, so that the waterproof effect of the middle frame assembly can be improved.

[0034] With reference to the first aspect, in some implementations of the first aspect, the plurality of pull-tab structures includes a first pull-tab structure, and the first pull-tab structure is located on the first connecting section of the connecting portion.

[0035] In the embodiments of the present application, the first pull-tab structure can be arranged on the first connecting section of the connecting portion of the appearance layer, that is, the first pull-tab structure can be arranged on the first connecting section by means of the space on the first connecting section, which can not only save the space of the accommodating cavity but also increase the bonding force between the appearance layer and the structural layer.

[0036] With reference to the first aspect, in some implementations of the first aspect, an extension is further arranged on the inner wall of the appearance layer, the extension can extend to the inside of the accommodating cavity along the appearance layer, one end of the extension is connected with the inner wall of the appearance layer, and the plurality of pull-tab structures further includes a second pull-tab structure, and the second pull-tab structure is located on the extension.

[0037] For example, the extension can be located between two adjacent first slit structures.

[0038] In the embodiments of the present application, considering the limitation of the arrangement position of the connecting portion, such as no connecting portion arranged between two first slit structures, the second pull-tab structure can also be arranged on the extension on the inner wall of the appearance layer, the extension can be directly fixedly connected with the appearance layer, so that part of the material of the structural layer can enter the second pull-tab structure, the appearance layer and the structural layer can be combined together, thereby effectively preventing the structural layer from falling off the appearance layer, and the connection stability between the appearance layer and the structural layer is increased.

[0039] With reference to the first aspect, in some implementations of the first aspect, the other end of the extension is connected with the first connecting section of the connecting portion.

[0040] In the embodiments of the present application, considering the limitation of the design shape of the connecting portion, the connecting portion and the inner wall of the appearance layer can be connected through the extension, and the corresponding pull-tab structure can be arranged on the extension, thereby effectively preventing the structural layer from falling off the appearance layer, and the connection stability between the appearance layer and the structural layer is increased.

[0041] With reference to the first aspect, in some implementations of the first aspect, the first pull-tab structure and the second pull-tab structure are both blind hole type pull-tab structures, and the opening of the blind hole type pull-tab structure faces the accommodating cavity.

[0042] In the embodiments of the present application, by setting the first and second pull-tab structures as blind hole pull-tab structures, the injection material of the structural layer can enter the blind holes, so that the appearance layer and the structural layer can be strongly combined together, thereby effectively preventing the structural layer from falling off the appearance layer, and facilitating to increase the connection stability between the appearance layer and the structural layer.

[0043] With reference to the first aspect, in some implementations of the first aspect, the plurality of pull-tab structures further include a third pull-tab structure, the third pull-tab structure being a blind hole pull-tab structure, the third pull-tab structure being disposed on the inner wall of the appearance layer in the thickness direction of the appearance layer.

[0044] In the embodiments of the present application, in order to further enhance the connection stability between the appearance layer and the structural layer, a third pull-tab structure can also be provided, which can be disposed on the inner wall of the appearance layer in the thickness direction of the appearance layer, so that the injection material of the structural layer can enter the blind holes, so that the appearance layer and the structural layer can be strongly combined together.

[0045] For example, the third pull-tab structure can be disposed upwardly or downwardly inclined in the thickness direction (z direction) of the wearable device, by setting such a third pull-tab structure inclined in the z direction, when the structural layer is injection molded on the inner wall of the appearance layer, the injection material will enter the pull-tab structures and form an undercut structure in the inclined blind hole structure. The inner wall of the third pull-tab structure has a blocking force on the injection material entering the hole in the direction perpendicular to the z direction, thereby effectively preventing the structural layer from falling off the appearance layer, and facilitating to increase the connection stability between the appearance layer and the structural layer.

[0046] With reference to the first aspect, in some implementations of the first aspect, the inner wall of the appearance layer further has a boss protruding inwardly, and the plurality of pull-tab structures further include a fourth pull-tab structure, the fourth pull-tab structure being disposed on the boss in the thickness direction of the wearable device.

[0047] In the embodiments of the present application, in order to further enhance the connection stability between the appearance layer and the structural layer, a fourth pull-tab structure can also be provided, which can be disposed on the boss of the inner wall of the appearance layer, so that the injection material of the structural layer can enter the fourth pull-tab structure, so that the appearance layer and the structural layer can be strongly combined together.

[0048] With reference to the first aspect, in some implementations of the first aspect, the plurality of pull-tab structures further include a fifth pull-tab structure, the fifth pull-tab structure being a groove structure disposed on the inner wall of the appearance layer.

[0049] For example, the groove structure can be disposed in the thickness direction of the appearance layer.

[0050] In the embodiments of the present application, in order to further enhance the connection stability between the appearance layer and the structure layer, a groove type pull glue structure can also be arranged on the inner wall of the appearance layer, so that the structure layer can be effectively prevented from falling off from the appearance layer, and the connection stability between the appearance layer and the structure layer can be facilitated.

[0051] With reference to the first aspect, in some implementations of the first aspect, the structure layer is nano-injection molded on the inner wall of the appearance layer.

[0052] In the embodiments of the present application, by nano-injection molding the structure layer on the inner wall of the appearance layer, a dense waterproof path can be formed between the structure layer and the appearance layer, and thus the waterproof performance of the wearable device can be improved. By nano-injection molding the structure layer on the appearance layer, the waterproof interface of the combination surface of the appearance layer and the structure layer can be minimized, the process can be simplified, and the waterproof performance can be improved.

[0053] With reference to the first aspect, in some implementations of the first aspect, the appearance layer is formed by forging, casting or die casting.

[0054] In the embodiments of the present application, by directly die casting the appearance layer and then directly injection molding the structure layer on the inner wall of the appearance layer through NMT injection molding, the appearance layer and the structure layer can be fixedly connected, and part of the structure of the appearance layer can be embedded in the structure layer, so as to improve the connection stability between the appearance layer and the structure layer; by forging, casting or die casting the appearance layer, the time of computer numerical control precision machining (CNC) can be reduced, and the processing cost can be greatly reduced.

[0055] With reference to the first aspect, in some implementations of the first aspect, the appearance layer includes an antenna radiator of the wearable device; the structure layer is located between the antenna radiator and the accommodating cavity, and the structure layer is used for providing antenna clearance for the antenna radiator.

[0056] In the embodiments of the present application, by arranging the structure layer between the appearance layer and the accommodating cavity, the antenna clearance can be provided for the antenna, so as to avoid the interference of the metal parts inside the wearable device on the antenna.

[0057] With reference to the first aspect, in some implementations of the first aspect, the wearable device can be a smart watch or a smart bracelet.

[0058] In a second aspect, a middle frame assembly is provided for a wearable device including a crown assembly. The middle frame assembly includes an appearance layer and a structure layer nested in the appearance layer. The appearance layer is a metal appearance layer, and the structure layer is an insulating structure layer. A plurality of antenna slot structures are provided on the appearance layer in a thickness direction of the wearable device. Part of the structure layer is exposed through the plurality of antenna slot structures. The plurality of antenna slot structures include a first slot structure and a second slot structure. The first slot structure has a slot width of 0.1-0.3 mm, and the second slot structure has a slot width of 0.8-1.5 mm. The second slot structure is located at a mounting position of the crown assembly.

[0059] The appearance layer of the middle frame assembly can be segmented by the plurality of slot structures, so that the appearance layer (antenna radiator) can carry different signal bands of different devices (e.g., GPS, Bluetooth, WIFI, 4G, etc.), thereby optimizing the communication quality of the wearable device. In addition, the second slot structure with a larger slot width can be disposed at the mounting position of the crown assembly, and the second slot structure can be shielded by the crown assembly so as not to be directly exposed and observed by a user. The first slot structure with a smaller slot width can be exposed and designed to have different appearance colors, thereby providing the wearable device with a better appearance effect.

[0060] In combination with the second aspect, in some implementations of the second aspect, the width between adjacent first slot structures is 0.8-1.5 mm.

[0061] In combination with the second aspect, in some implementations of the second aspect, a mounting hole for mounting the crown assembly is provided on a side edge of the middle frame assembly. The mounting hole is in communication with the second slot structure.

[0062] In combination with the second aspect, in some implementations of the second aspect, a decorative slot structure is further provided on the appearance layer in the thickness direction of the wearable device. The decorative slot structure is located on the surface of the appearance layer and passes through part of the appearance layer. The slot width of the decorative slot structure is equal to the slot width of the first slot structure.

[0063] In combination with the second aspect, in some implementations of the second aspect, the decorative slot structure is disposed between adjacent first slot structures.

[0064] In combination with the second aspect, in some implementations of the second aspect, the decorative slot structure is disposed on one side of the first slot structure. The width between the decorative slot structure and the adjacent first slot structure is equal to the width between adjacent first slot structures.

[0065] With reference to the second aspect, in some implementations of the second aspect, an inner wall of the appearance layer is provided with a connecting portion extending to an inside of the middle frame assembly; the structural layer is provided with a mounting portion matched with the connecting portion, one end of the connecting portion is arranged in the mounting portion, and the other end of the connecting portion is exposed from the mounting portion.

[0066] With reference to the second aspect, in some implementations of the second aspect, the connecting portion includes a first connecting segment and a second connecting segment, one end of the first connecting segment is connected to the inner wall of the appearance layer, and the other end of the first connecting segment extends to the inside of the appearance layer; one end of the second connecting segment is connected to the end of the first connecting segment away from the appearance layer, and the other end of the second connecting segment extends away from the first connecting segment along a thickness direction of the wearable device.

[0067] With reference to the second aspect, in some implementations of the second aspect, the appearance layer further includes a plurality of pull-tab structures, the plurality of pull-tab structures are located on one side or both sides of the at least one antenna slot structure, and the pull-tab structures are used to increase a bonding force between the appearance layer and the structural layer.

[0068] With reference to the second aspect, in some implementations of the second aspect, the plurality of pull-tab structures include a first pull-tab structure, and the first pull-tab structure is located on the first connecting segment.

[0069] With reference to the second aspect, in some implementations of the second aspect, the inner wall of the appearance layer is further provided with an extension portion, the extension portion can extend to the inside of the middle frame assembly along the appearance layer, one end of the extension portion is connected to the inner wall of the appearance layer, and the plurality of pull-tab structures further include a second pull-tab structure, and the second pull-tab structure is located on the extension portion.

[0070] With reference to the second aspect, in some implementations of the second aspect, the other end of the extension portion is connected to the first connecting segment of the connecting portion.

[0071] With reference to the second aspect, in some implementations of the second aspect, the first pull-tab structure and the second pull-tab structure are both blind-hole pull-tab structures.

[0072] With reference to the second aspect, in some implementations of the second aspect, the plurality of pull-tab structures further include a third pull-tab structure, the third pull-tab structure is a blind-hole pull-tab structure, and the third pull-tab structure is arranged on the inner wall of the appearance layer along a wall thickness direction of the appearance layer.

[0073] With reference to the second aspect, in some implementations of the second aspect, the inner wall of the appearance layer is further provided with a protrusion inwardly, and the plurality of pull-tab structures further include a fourth pull-tab structure, the fourth pull-tab structure being arranged on the protrusion in the thickness direction of the wearable device.

[0074] With reference to the second aspect, in some implementations of the second aspect, the plurality of pull-tab structures further include a fifth pull-tab structure, the fifth pull-tab structure being a groove structure arranged on the inner wall of the appearance layer.

[0075] With reference to the second aspect, in some implementations of the second aspect, the structure layer is formed on the inner wall of the appearance layer by nano-injection molding.

[0076] With reference to the second aspect, in some implementations of the second aspect, the appearance layer is formed by forging, casting or die casting.

[0077] With reference to the second aspect, in some implementations of the second aspect, the appearance layer includes an antenna radiator of the wearable device, and the structure layer is located between the antenna radiator and the accommodating cavity, and the structure layer is used to provide antenna clearance for the antenna radiator.

[0078] With reference to the second aspect, in some implementations of the second aspect, the middle frame assembly can be applied to a smart watch or a smart bracelet.

[0079] It should be noted that the beneficial effects of the second aspect can be referred to the description in the first aspect, which will not be repeated here. BRIEF DESCRIPTION OF DRAWINGS

[0080] FIG. 1 is a structural schematic diagram of a wearable device according to an embodiment of the present application.

[0081] FIG. 2 is an exploded structural schematic diagram of a device main body of a wearable device according to an embodiment of the present application.

[0082] FIG. 3 is a structural schematic diagram of a middle frame assembly of a wearable device according to an embodiment of the present application.

[0083] FIG. 4 is a structural schematic diagram of a middle frame assembly of a wearable device according to an embodiment of the present application from another angle.

[0084] FIG. 5 is an exploded structural schematic diagram of a middle frame assembly of a wearable device according to an embodiment of the present application.

[0085] FIG. 6 is a partial structural schematic diagram of a middle frame assembly of a wearable device according to an embodiment of the present application.

[0086] FIG. 7 is a structural schematic diagram of an appearance layer of a middle frame assembly of a wearable device according to an embodiment of the present application.

[0087] FIG. 8 is a structural schematic diagram of the appearance layer of the middle frame assembly of the wearable device according to an embodiment of the present application.

[0088] FIG. 9 is a structural schematic diagram of the appearance layer of the middle frame assembly of the wearable device according to an embodiment of the present application.

[0089] FIG. 10 is a structural schematic diagram of the appearance layer of the middle frame assembly of the wearable device according to an embodiment of the present application.

[0090] FIG. 11 is a structural schematic diagram of the appearance layer of the middle frame assembly of the wearable device according to an embodiment of the present application.

[0091] FIG. 12 is a structural schematic diagram of the appearance layer of the middle frame assembly of the wearable device according to an embodiment of the present application.

[0092] FIG. 13 is a structural schematic diagram of the structural layer of the middle frame assembly of the wearable device according to an embodiment of the present application.

[0093] FIG. 14 is a structural schematic diagram of the structural layer of the middle frame assembly of the wearable device according to an embodiment of the present application.

[0094] FIG. 15 to FIG. 19 are processing schematic diagrams of the appearance layer and the structural layer of the middle frame assembly of the wearable device according to an embodiment of the present application. DETAILED DESCRIPTION

[0095] The embodiments of the present application are described in detail below, and examples of the embodiments of the present application are shown in the accompanying drawings. In the drawings, the same or similar reference numerals indicate the same or similar elements or elements having the same or similar functions. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present application, and cannot be understood as a limitation of the present application.

[0096] Unless otherwise defined, technical terms or scientific terms used herein should be understood as having the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the present application and simplify the description, and therefore cannot be understood as indicating or implying 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 a limitation of the present application.

[0097] In the embodiments of the present application, the terms "first", "second" are only used for descriptive purpose and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can intelligently or implicitly include one or more features. In addition, in the description of the embodiments of the present application, "a plurality of" means two or more than two, "at least one" and "one or more" means one, two or more than two. The singular expression "one", "a kind", "the", "the above", "the", and "this" are intended to also include, for example, the expression "one or more", unless there is clear indication to the contrary in the context. The size of the serial number of each process below does not mean the order of execution, and the execution order of each process should be determined by its function and inherent logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0098] In the embodiments of the present application, the reference to "one embodiment" or "some embodiments" and the like means that the specific features, structures or characteristics described in connection with the embodiment are included in one or more embodiments of the present application. Therefore, the statements "in one embodiment", "in some embodiments", "in other some embodiments", "in further some embodiments" and the like appearing in different places in the specification are not necessarily all referring to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized. The terms "include", "contain", "have" and their variants mean "include but not limited to", unless otherwise specifically emphasized.

[0099] In the embodiments of the present application, "and / or" is only a description of the association relationship between the associated objects, which means that there can be three relationships, for example, A and / or B can represent the three cases of A alone, A and B together, and B alone. In addition, the character " / " in this paper generally represents that the front and rear associated objects are a "or" relationship.

[0100] With the continuous development of wearable devices (such as smart watches), wearable devices are more and more popular with users due to their portability and intelligence. The wearable devices capable of realizing intelligent call, especially the smart watches, have always been a difficult problem in the industry to improve the antenna performance.

[0101] In the related art, the watch case of the smart watch is mostly a metal watch case, which is the antenna structure of the smart watch. However, in order to make the appearance of the smart watch have an integrated effect, the metal watch case is usually designed as a seamless structure. However, the seamless structure design of the metal watch case may affect the performance of the multi-band antenna. Therefore, in order to meet higher and more complex antenna requirements, the metal watch case needs to be divided into multiple segments. Traditional common smart watches, such as mobile phones, have a relatively wide slit width. Such a wide slit cannot meet the requirements in the field of smart watches with higher decoration demands.

[0102] Based on this, the present application provides a wearable device with good multi-band antenna performance and good appearance effect.

[0103] It should be noted that the wearable device provided by the embodiments of the present application can include a smart bracelet, a smart watch and the like, and can even include a smart wearable device on other parts such as the ankle or the neck. It should be understood that the "smart watch" in the embodiments of the present application is not limited to a "watch", but can also be other electronic devices, for example, can be other smart wearable devices.

[0104] It should be understood that the embodiments of the present application will take the smart watch as an example of the wearable device. The smart watch provided by the present application has good multi-band antenna performance, and the width of the antenna slit is small, so that the smart watch has a good appearance effect.

[0105] FIG. 1 is a structural schematic diagram of a wearable device provided by an embodiment of the present application. FIG. 2 is an exploded structural schematic diagram of a device main body of the wearable device provided by an embodiment of the present application.

[0106] Referring to FIGS. 1 and 2, the wearable device 10 can include a device main body 1000 and a watchband 2000, and the watchband 2000 is rotationally arranged at both ends of the device main body 1000 to facilitate wearing. In FIG. 1, only part of the structure of the watchband 2000 is shown, and the shape of the watchband 2000 is not further limited in the embodiments of the present application.

[0107] As shown in FIG. 2, the device main body 1000 can include a panel assembly 100, a middle frame assembly 200, a battery assembly 300, a control assembly 400 and a bottom shell assembly 500. The panel assembly 100 and the bottom shell assembly 500 are arranged at the top end and the bottom end of the middle frame assembly 200, respectively, so as to form an accommodation cavity 600 between the panel assembly 100, the middle frame assembly 200 and the bottom shell assembly 500. The accommodation cavity 600 can be used to accommodate various electronic devices, such as the battery assembly 300 and the control assembly 400. The battery assembly 300 can be used to provide power to the panel assembly 100 and part of the structure in the control assembly 400, and the control assembly 400 can be used to control the wearable device 10 to realize different functions.

[0108] The panel assembly 100 can include a display panel 110 and a top ring 120, wherein the top ring 120 can be sealingly connected with the middle frame assembly 200 close to one end of the panel assembly 100, and the top ring 120 is sealingly connected with the display panel 110. The control assembly 400 at least includes a circuit board 410 fixedly arranged on the middle frame assembly 200, and part of the structure of the middle frame assembly 200 can be a radiator of an antenna, and the circuit board 410 is electrically connected with the radiator of the antenna on the middle frame assembly 200, so that the radiator of the antenna can realize signal conduction. The battery assembly 300 can include a battery body 310 and a battery bracket 320, and the battery body 310 can be fixedly connected with the middle frame assembly 200 through the battery bracket 320.

[0109] By fixing the panel assembly 100 and the middle frame assembly 200, fixing the bottom shell assembly 500 and the middle frame assembly 200, and sealingly connecting the panel assembly 100 and the bottom shell assembly 500 and the middle frame assembly 200, the waterproof performance of the wearable device 10 can be improved.

[0110] In the embodiments of the present application, the fixing and sealing manner between the panel assembly 100 and the bottom shell assembly 500 and the middle frame assembly 200 is not further limited, for example, the panel assembly 100 and the bottom shell assembly 500 and the middle frame assembly 200 can be fixedly connected by fasteners (such as screws), interference fit connection, snap connection and the like, and the panel assembly 100 and the bottom shell assembly 500 and the middle frame assembly 200 can be sealingly connected by interference fit, sealing ring, sealing glue and the like. The connection manner of the panel assembly 100 and the middle frame assembly 200, and the connection manner of the bottom shell assembly 500 and the middle frame assembly 200 are not further limited in the embodiments of the present application.

[0111] In some embodiments, one or more crown assemblies 3000 can also be provided on the side of the device body 1000 (such as the side of the middle frame assembly 200), wherein the crown assembly 3000 can be used to adjust the mode of the wearable device 10 and the like. For example, the crown assembly 3000 is movably arranged on the outside of the middle frame assembly 200, and part of the structure of the crown assembly 3000 can rotate or slide relative to the middle frame assembly 200 and the like, and the connection relationship between the crown assembly 3000 and the middle frame assembly 200, and the connection relationship between the crown assembly 3000 and the control assembly 400 are not further limited in the embodiments of the present application, as long as they can be arranged on the wearable device 10 and can be used to adjust the function of the wearable device 10. In addition, the external shape of the crown assembly 3000 is not further limited, as long as it can realize its function.

[0112] The middle frame assembly 200 of the wearable device 10 will be described in detail below with reference to the accompanying drawings.

[0113] For convenience of description, in the embodiments of the present application, one side of the device main body 1000 of the wearable device 10 on which the panel assembly 100 is arranged is regarded as the front side of the wearable device 10, the device main body 1000 and the middle frame assembly 200; one side of the device main body 1000 of the wearable device 10 on which the bottom shell assembly 500 is arranged is regarded as the back side of the wearable device 10, the device main body 1000 and the middle frame assembly 200. The side of the middle frame assembly 200 facing the central axis of the device main body 1000 is regarded as the inner side of the middle frame assembly 200, and the side of the middle frame assembly 200 away from the central axis of the device main body 1000 is regarded as the outer side of the middle frame assembly 200.

[0114] The z direction in the figure is the thickness direction of the wearable device 10, and is also the direction of the central axis of the wearable device 10 or the middle frame assembly 200. The x direction in the figure is the direction in which the wearable device 10 is connected to the watchband 2000. The y direction in the figure is the direction perpendicular to the x direction and the z direction.

[0115] FIG. 3 is a structural schematic diagram of the middle frame assembly 200 of the wearable device 10 according to an embodiment of the present application. FIG. 4 is a structural schematic diagram of the middle frame assembly 200 of the wearable device 10 according to an embodiment of the present application from another angle. FIG. 5 is an exploded structural schematic diagram of the middle frame assembly 200 of the wearable device 10 according to an embodiment of the present application. FIG. 6 is a partial structural schematic diagram of the middle frame assembly 200 of the wearable device 10 according to an embodiment of the present application. In the figures, FIG. 3 is a structural schematic diagram of the front side of the middle frame assembly 200, and FIG. 4, FIG. 5 and FIG. 6 are structural schematic diagrams of the back side of the middle frame assembly 200.

[0116] As shown in FIG. 3 and FIG. 4, the middle frame assembly 200 can include an appearance layer 210 and a structure layer 220, wherein the appearance layer 210 is located on the outer side of the middle frame assembly 200, the structure layer 220 is located on the inner side of the middle frame assembly 200, and the appearance layer 210 and the structure layer 220 are fixedly connected, for example, at least the inner wall of the appearance layer 210 and the outer wall of the structure layer 220 are fixedly connected. The inner walls of the appearance layer 210 and the structure layer 220 are both directed to the inner side of the middle frame assembly 200, and the outer walls of the appearance layer 210 and the structure layer 220 are both directed to the outer side of the middle frame assembly 200. The outer side or the outer wall of the appearance layer 210 can be observed by a user.

[0117] In some embodiments, the appearance layer 210 can be a metal appearance layer, and the structure layer 220 can be an insulating structure layer. For example, the appearance layer 210 can be processed by forging, casting or die casting process, and the structure layer 220 can be directly formed on the inner wall of the appearance layer 210 by nano molding technology (NMT) process, so as to form a sealed first waterproof interface between the appearance layer 210 and the structure layer 220 and improve the waterproof performance of the wearable device 10. By directly die casting the appearance layer 210 and then directly injecting the structure layer 220 on the inner wall of the appearance layer 210 by NMT injection molding, not only the appearance layer 210 and the structure layer 220 can be fixedly connected, but also part of the structure of the appearance layer 210 can be embedded in the structure layer 220, so as to improve the firmness of the connection between the appearance layer 210 and the structure layer 220. In addition, the time of computerised numerical control machine (CNC) can be greatly reduced, and the processing cost can be greatly reduced.

[0118] In some embodiments, the material of the appearance layer 210 can be a metal material, which includes but is not limited to amorphous alloy, stainless steel, titanium alloy, aluminum alloy, etc. The structure layer 220 can be composed of an insulating plastic polymer material, and the material of the structure layer 220 includes but is not limited to nylon, polyamide (PA), PA+glass fiber, polybutylene terephthalate (PBT), etc. Of course, in other embodiments, the materials of the appearance layer 210 and the structure layer 220 can also be other substances, and the specific materials of the appearance layer 210 and the structure layer 220 are not limited in the embodiments of the present application.

[0119] As shown in FIGS. 5 and 6, the middle frame assembly 200 can further include a first sealing member 230 and a second sealing member 240. The first sealing member 230 can be arranged between the appearance layer 210 and the structure layer 220, and a first groove 2211 for accommodating the first sealing member 230 can be formed between the appearance layer 210 and the structure layer 220, and the first sealing member 230 can be arranged in the first groove 2211. The first sealing member 230 can be used to seal the connection between the structure layer 220 and the appearance layer 210, and a second waterproof interface can be formed between the connection surface of the first sealing member 230 and the first groove 2211, so as to prevent liquid from entering the accommodation cavity of the device main body 1000 from the gap between the appearance layer 210 and the structure layer 220, thereby improving the waterproof performance of the wearable device 10.

[0120] The second seal 240 can be arranged at one end of the structural layer 220 close to the bottom shell assembly 500, and a second groove 222 for accommodating the second seal 240 can be arranged on the side of the structural layer 220 facing the bottom shell assembly 500, and the second seal 240 can be arranged in the second groove 222. The second seal 240 can be used to seal the connection between the middle frame assembly 200 and the bottom shell assembly 500, so that the middle frame assembly 200 and the bottom shell assembly 500 can be sealingly connected, thereby improving the waterproof performance between the middle frame assembly 200 and the bottom shell assembly 500.

[0121] In some embodiments, the first seal 230 and the second seal 240 can each be a ring-shaped sealing ring formed by a dispensing process, and can be made of plastic, rubber, silicone or other materials. For example, the first seal 230 can be a rubber sealing ring, and the first seal 230 can be interference-fitted with the first groove 2211, for example, by controlling the pressure when connecting, the first seal 230 is pressed into the first groove 2211, thereby forming a second waterproof interface between the connecting surface of the first seal 230 and the first groove 2211.

[0122] In this way, by arranging the first seal 230 between the connecting portion 211 of the appearance layer 210 and the mounting portion 221 of the structural layer 220, water or other liquids can be prevented from entering the accommodation cavity of the device main body 1000 through the first waterproof interface and the second waterproof interface, thereby preventing the normal operation of the device main body 1000 and increasing the waterproof performance of the wearable device 10.

[0123] The second seal 240 can be a ring-shaped sealing ring formed by a dispensing process. For example, the second seal 240 can be a ring-shaped sealing ring structure as shown in FIG. 5, and the second seal 240 can be interference-fitted with the second groove 222.

[0124] In the embodiments of the present application, the materials, shapes and forming processes of the first seal 230 and the second seal 240 are not limited further, as long as they can achieve the sealing function.

[0125] As shown in FIG. 5, the appearance layer 210 can include a ring-shaped wall structure 210a extending in the thickness direction (i.e., the z direction) of the middle frame assembly 200, wherein the side of the wall structure 210a facing the central axis of the middle frame assembly 200 is the inner wall of the appearance layer 210, and the side of the wall structure 210a away from the central axis of the middle frame assembly 200 is the outer wall of the appearance layer 210. A plurality of mounting holes 213 for mounting the crown assembly 3000 or other accessories can be arranged on the inner wall of the appearance layer 210, wherein the mounting holes 213 can be circular through-hole structures or rectangular through-hole structures, and the specific shape, size and position of the mounting holes 213 are not limited further.

[0126] In some embodiments, as shown in FIGS. 4-6, the inner wall of the appearance layer 210 is provided with at least one connecting portion 211 extending to the inside of the accommodating cavity 600, one end of the connecting portion 211 can be connected to the inner wall of the appearance layer 210, and the other end extends to the inside of the appearance layer 210. The structure layer 220 includes an annular wall 220a arranged around the inner wall of the appearance layer 210, and the structure layer 220 is provided with a mounting portion 221 matched with the connecting portion 211, one end of the connecting portion 211 is arranged in the mounting portion 221, and the other end is exposed outside the mounting portion 221. Wherein, the connecting portion 211 is fixedly connected with the mounting portion 221, and part of the structure of the connecting portion 211 can be exposed outside the mounting portion 221, and a first groove 2211 for mounting the first sealing member 230 is formed between the connecting portion 211 and the mounting portion 221, and the first sealing member 230 can be arranged in the first groove 2211.

[0127] FIG. 7 is a structural schematic diagram of the appearance layer 210 of the wearable device 10 provided in the embodiments of the present application. FIG. 8 is another angle structural schematic diagram of the appearance layer 210 of the wearable device 10 provided in the embodiments of the present application. FIGS. 7 and 8 are structural schematic diagrams of the back of the middle frame assembly 200.

[0128] As shown in FIGS. 7 and 8, the inner wall of the appearance layer 210 can be provided with a plurality of connecting portions 211, and the plurality of connecting portions 211 can be arranged at intervals around the central axis of the middle frame assembly 200, for example, can be arranged on the inner wall of the appearance layer 210 in a central symmetry around the central axis of the middle frame assembly 200, can be arranged on the inner wall of the appearance layer 210 in a uniform manner around the central axis of the middle frame assembly 200, or can be arranged on the inner wall of the appearance layer 210 in a non-uniform manner around the central axis of the middle frame assembly 200. In the embodiments of the present application, the number of connecting portions 211 and the positions where they are arranged are not limited further.

[0129] As shown in FIGS. 7 and 8, along the z direction, the appearance layer 210 can be provided with a plurality of slit structures 212. In some embodiments, the slit width of the slit structure 212 can be greater than or equal to 0.1 mm, and the distance between adjacent slit structures 212 can be greater than or equal to 0.8 mm, for example, the slit width of the slit structure 212 can be 0.2 mm, and the distance between adjacent slit structures 212 can be 1 mm.

[0130] In some embodiments, the slit structure 212 can include a through slit structure and a false slit structure 212b (or referred to as a decorative slit structure), wherein the through slit structure can include a plurality, and the false slit structure 212b can include at least one. It should be understood that the through slit structure penetrates the entire appearance layer 210, and the plurality of through slit structures form a break between them, thereby segmenting the appearance layer 210, for example, into two segments, three segments, four segments, or more segments; the false slit structure 212b is opened on the outer side surface of the appearance layer 210, which is a non-through slit, that is, the false slit structure 212b can pass through part of the appearance layer 210, but not the entire appearance layer 210, that is, it can be slotted on the surface of the appearance layer 210 to form a slit structure similar to the appearance of the through slit structure, thereby increasing the aesthetic appearance.

[0131] In some embodiments, the slit structure 212 can include a plurality of micro-slit structures 212a, which are a type of through slit structure, and the slit width of the micro-slit structure 212a is between 0.1mm-0.3mm, and the width between adjacent micro-slit structures 212a is between 0.8mm-1.5mm, for example, the slit width of the micro-slit structure 212a can be 0.1mm, 0.2mm, 0.3mm, and the distance between adjacent micro-slit structures 212a is 0.8mm, 0.9mm, 1mm, 1.1mm, 1.2mm, 1.3mm, 1.4mm, 1.5mm.

[0132] It should be understood that in some possible cases, the smart watch can not be provided with the crown assembly 3000, and therefore cannot block the wider slit structure by means of the crown assembly 3000, so that the slit structure 212 is directly exposed and observed by the user. In this case, if the wider slit structure 212 is directly provided on the appearance layer 210 of the smart watch, it will affect the aesthetic appearance of the smart watch. Therefore, the above-mentioned micro-slit structure can be used to replace the wider slit structure by providing a plurality of micro-slit structures 212a, which can achieve different color combinations of the appearance effect, thereby meeting the antenna requirements and increasing the aesthetic appearance of the smart watch. In addition, the false slit structure 212b can also be provided on the appearance layer 210 to further improve the aesthetic appearance of the smart watch.

[0133] For example, the slit width of the false slit structure 212b is equal to the slit width of the micro-slit structure 212a, which can be between 0.1mm-0.3mm, for example, the slit width of the false slit structure 212b can be 0.1mm, 0.2mm, 0.3mm.

[0134] In one example, the false slit structure 212b can be arranged between adjacent micro-slit structures 212a.

[0135] For example, if the wearable device is provided with two micro-slit structures 212a, the false-slit structure 212b can be located between the two micro-slit structures 212a, and the distance from the false-slit structure 212b to the two micro-slit structures 212a is equal, so as to increase the appearance of the wearable device.

[0136] In another example, as shown in FIGS. 3, 7 and 8, the false-slit structure 212b can be provided on one side of the micro-slit structure 212a, that is, the width between the false-slit structure 212b and the adjacent micro-slit structure 212a is equal to the width between the adjacent micro-slit structures 212a.

[0137] For example, the wearable device can include a plurality of micro-slit structures 212a, the false-slit structure 212b can be provided on one side of the plurality of micro-slit structures 212a, and can be symmetrically arranged with other micro-slit structures 212a, so as to further increase the appearance of the wearable device.

[0138] For example, the width between the false-slit structure 212b and the adjacent micro-slit structure 212a is equal to the width between the adjacent two micro-slit structures 212a, which can be between 0.8mm-1.5mm, for example, the width between the false-slit structure 212b and the adjacent micro-slit structure 212a can be 0.8mm, 0.9mm, 1mm, 1.1mm, 1.2mm, 1.3mm, 1.4mm, 1.5mm.

[0139] In some embodiments, the slit structure 212 can further include one or more fusion slit structures 212c, which are a kind of through slit structures, and the fusion slit structure 212c can be located at the mounting position of the crown assembly 3000 on the middle frame assembly 200. It should be understood that the fusion slit structure 212c can be arranged in fusion with the assembly hole 213 for mounting the crown assembly 3000, that is, the assembly hole 213 can be communicated with the fusion slit structure 212c. That is, the assembly hole 213 can be punched through on one side or both sides of the middle frame assembly 200 along the central axis direction to form the fusion slit structure 212c, so as to simplify the processing procedure.

[0140] It should be understood that in some possible cases, the smart watch can be provided with one or more crown assemblies 3000, in which case the fusion slit structure 212c can be arranged by means of the assembly hole 213 of the crown assembly 3000, and the fusion slit structure 212c can also be shielded by means of the crown assembly 3000, so that the fusion slit structure 212c is not directly exposed and observed by the user, so as to meet the requirements of the antenna and the appearance of the smart watch.

[0141] Exemplarily, the slit width of the fusion slit structure 212c is between 0.8mm and 1.5mm, for example, the slit width of the fusion slit structure 212c can be 0.8mm, 0.9mm, 1mm, 1.1mm, 1.2mm, 1.3mm, 1.4mm, 1.5mm.

[0142] It should be noted that if the slit structure 212 is provided on the arc-shaped appearance layer 210, the slit width or the width between adjacent slit structures is the width of a straight line, that is, the length of the chord of the arc.

[0143] It should be noted that by providing the slit structure 212 on the appearance layer 210, the appearance layer 210 can be segmented, for example, into one segment, two segments, three segments, four segments or more, so that the antenna radiator (appearance layer 210) can carry different devices (for example, different signal frequency bands of global positioning system (GPS), Bluetooth, wireless fidelity (WIFI), the 4th generation mobile communication technology (4G), etc.), thereby optimizing the communication quality of the wearable device 10.

[0144] The number of slit structures 212 on the appearance layer 210 is not limited in the present application, for example, it can be two, three, four or more, which can be set according to the signal frequency bands to be carried, and is not limited further in the embodiment of the present application.

[0145] Exemplarily, as shown in FIG. 8, the slit structure 212 on the appearance layer 210 is six, wherein the six slit structures 212 are arranged at intervals on the appearance layer 210. The six slit structures 212 can include two micro slit structures 212a, one false slit structure 212b and three fusion slit structures 212c, the two micro slit structures 212a and the one false slit structure 212b can form a symmetrical arrangement, the shape, appearance, size, etc. of the false slit structure 212b are the same as those of the micro slit structure 212a, thereby increasing the aesthetic appearance. The three fusion slit structures 212c can be in communication with the assembly hole 213 of the crown assembly 3000, and the wider fusion slit structure 212c is shielded by the crown assembly 3000 to increase the aesthetic appearance of the smart watch. In this way, the appearance layer 210 can be divided into five segments, thereby carrying different signal frequency bands of different devices (for example, GPS, Bluetooth, WIFI, 4G, etc.), thereby optimizing the communication quality of the wearable device 10.

[0146] FIG. 9 is a structural schematic diagram of another angle of the appearance layer 210 of the wearable device 10 according to an embodiment of the present application, and FIGS. 10 to 12 are partial structural schematic diagrams of the appearance layer 210 of the wearable device 10 according to an embodiment of the present application. In FIGS. 9 to 12, the appearance layer 210 is viewed from the back.

[0147] As shown in FIG. 9, the connecting portion 211 can include a first connecting segment 2111 and a second connecting segment 2112. One end of the first connecting segment 2111 can be connected to the inner wall of the appearance layer 210, and the other end extends to the inner side of the middle frame assembly 200. One end of the second connecting segment 2112 is connected to the end of the first connecting segment 2111 away from the appearance layer 210, and the other end extends in a direction away from the first connecting segment 2111 and parallel to the central axis of the middle frame assembly 200.

[0148] In some embodiments, the first connecting segment 2111 of the connecting portion 211 can be perpendicular to the inner wall of the appearance layer 210, and the second connecting segment 2112 can be perpendicular to the first connecting segment 2111. For example, the connecting portion 211 can be in an L-shaped structure and perpendicular to the inner wall of the appearance layer 210. In this way, the stress between the first connecting segment 2111 and the inner wall of the appearance layer 210 can be reduced, the structural strength can be improved, and the size of the connecting portion 211 can be reduced, thereby saving costs.

[0149] Of course, in other embodiments, the first connecting segment 2111 can be arranged at an angle with respect to the inner wall of the appearance layer 210 to adapt to different assembly spaces. In the embodiments of the present application, the angle between the first connecting segment 2111 and the inner wall of the appearance layer 210 is not limited further.

[0150] For example, the connecting portion 211 can be located at one end of the appearance layer 210 close to the panel assembly 100. Of course, in other embodiments, the connecting portion 211 can also be arranged at other positions. For example, the connecting portion 211 can be located at one end of the appearance layer 210 close to the bottom shell assembly 500. The specific position of the connecting portion 211 can be determined according to the mounting position of the control assembly 400 in the device main body 1000, which is not limited further herein.

[0151] In some embodiments, the first connecting section 2111 of the connecting part 211 can be a fan-shaped structure or an arc-shaped structure, wherein the large end of the fan-shaped structure or the arc-shaped structure is connected with the inner wall of the appearance layer 210, and the small end of the fan-shaped structure or the arc-shaped structure can be connected with the second connecting section 2112. By setting the first connecting section 2111 as a fan-shaped structure or an arc-shaped structure, the strength of the fan-shaped structure or the arc-shaped structure is greater than that of a rectangular structure with the same outer diameter as the second connecting section 2112. By connecting the large end of the fan-shaped structure with the inner wall of the appearance layer 210, the connecting area between the connecting part 211 and the appearance layer 210 can be increased, thereby increasing the connecting strength of the appearance layer 210 and the first connecting section 2111. Since the connecting part 211 will be deformed under the action of mold gravity and injection pressure when the structural layer 220 is injection molded onto the appearance layer 210, by setting the first connecting section 2111 as a fan-shaped structure or an arc-shaped structure, the strength of the connecting part 211 can be improved, thereby reducing the deformation of the connecting part 211 during injection molding and improving the structural precision of the structural layer 220.

[0152] In some embodiments, the second connecting section 2112 can be a hollow cylindrical structure, and the inner cavity of the exemplary hollow cylindrical structure can be provided with threads, so that the connecting stability of the connecting part 211 can be increased during assembly. Exemplarily, the outer side of the second connecting section 2112 can be a conical cylindrical structure, so that the mold can be easily demolded during processing. Of course, the second connecting section 2112 can also be a solid cylindrical structure (see FIGS. 9-12), which is not limited in the present application.

[0153] It should be noted that the connecting part 211 can be integrally formed with the appearance layer 210 by a die casting process. Of course, in other embodiments, the connecting part 211 can be connected with the appearance layer 210 by welding or other methods, and the connecting method of the connecting part 211 and the appearance layer 210 is not limited in the embodiments of the present application.

[0154] In some embodiments, the wall thickness of the appearance layer 210 can be between 0.3 mm and 0.5 mm, for example, 0.3 mm, 0.4 mm, 0.5 mm, etc. Of course, in other embodiments, the wall thickness of the appearance layer 210 can also be other values, for example, 1 mm, 2 mm, etc., and the wall thickness of the appearance layer 210 is not limited in the embodiments of the present application.

[0155] It should be noted that, since the materials of the appearance layer 210 and the structural layer 220 are different, the coefficients of thermal expansion of the appearance layer 210 and the structural layer 220 are different, so that when the structural layer 220 and the appearance layer 210 are subjected to NMT injection, internal stress or external stress will exist between the structural layer 220 and the appearance layer 210, which is easy to cause cracking between the structural layer 220 and the appearance layer 210. The embodiment of the present application sets the connecting part 211 on the inner side of the appearance layer 210, which can be wrapped by the injection material (such as plastic) of the structural layer 220 when the structural layer 220 is arranged on the appearance layer 210 by NMT injection, thereby forming a surrounding pull-plastic structure, which is beneficial to mold forming, is beneficial to product pull-plastic, prevents cracking between the appearance layer 210 and the structural layer 220, improves the structural strength of the middle frame assembly 200, and can improve the waterproof effect between the appearance layer 210 and the structural layer 220.

[0156] In some embodiments, as shown in FIGS. 10 and 11, the first connecting section 2111 of the connecting part 211 can not be directly connected with the inner wall of the appearance layer 210, but is connected with the inner wall of the appearance layer 210 through the extension part 218. The appearance layer 210 can include the extension part 218, which can extend along the top of the appearance layer 210 to the inside of the accommodating cavity 600. In some examples, one end of the extension part 218 can be connected with the inner wall of the appearance layer 210, and the other end of the extension part 218 can be connected with the first connecting section 2111 of the connecting part 211. In some examples, one end of the extension part 218 is connected with the inner wall of the appearance layer 210, and the other end of the extension part 218 can not be connected with the first connecting section 2111 (see FIG. 10).

[0157] The appearance layer 210 can include a plurality of pull-plastic structures, which can be located on one side or both sides of the at least one antenna slot structure, and the pull-plastic structures are used to increase the bonding force between the appearance layer 210 and the structural layer 220.

[0158] In some embodiments, as shown in FIGS. 9, 10 and 11, in order to increase the bonding force between the appearance layer 210 and the structural layer 220, a pull-plastic structure 214 can be arranged on one side or both sides of the slot structure 212, the pull-plastic structure 214 can be arranged on the first connecting section 2111 of the connecting part 211, and / or the pull-plastic structure 214 can be arranged on the extension part 218.

[0159] It should be understood that the pull-plastic structure 214 can be a blind hole type pull-plastic structure, the opening of the blind hole faces the accommodating cavity 600, and the shape of the hole can be circular, oval, or other shapes (such as square, rectangular, etc.), which are not limited in the present application.

[0160] By setting the pull-tab structure 214 as a blind hole type pull-tab structure, the injection material of the structural layer 220 can enter the blind hole, so that the appearance layer 210 and the structural layer 220 can be combined together firmly, thereby effectively preventing the structural layer 220 from falling off from the appearance layer 210, and facilitating to increase the connection stability between the appearance layer 210 and the structural layer 220.

[0161] In some embodiments, as shown in FIGS. 9 and 10, the inner wall of the appearance layer 210 can also be provided with a pull-tab structure 215, which can be arranged on both sides of the micro slit structure 212. The pull-tab structure 215 can be a blind hole type pull-tab structure, and can be arranged along the thickness direction of the appearance layer 210. For example, the pull-tab structure 215 can be arranged upwardly or downwardly along the z direction of the wearable device 10, or the pull-tab structure 215 can be arranged vertically to the thickness direction (z direction) of the middle frame assembly 200.

[0162] For example, the pull-tab structure 215 is arranged upwardly along the z direction in FIG. 10. When the structural layer 220 is injected onto the inner wall of the appearance layer 210, the injection material enters the pull-tab structure 215 and forms an undercut structure in the inclined blind hole structure. In other words, the inner wall of the pull-tab structure 215 has a blocking force in the x direction and the y direction to the injection material entering the hole, thereby effectively preventing the structural layer 220 from falling off from the appearance layer 210, and facilitating to increase the connection stability between the appearance layer 210 and the structural layer 220.

[0163] In the embodiments of the present application, the number of the pull-tab structure 215 can be three, and of course, a plurality of pull-tab structures can also be arranged at other positions in other embodiments. Therefore, the arrangement position and the number of the pull-tab structure 215 are not limited further. In some embodiments, the pull-tab structure 215 can be formed by drilling or laser drilling, and of course, the pull-tab structure 215 can also be formed by other ways. In the embodiments of the present application, the forming way of the pull-tab structure 215 is not limited further.

[0164] In some embodiments, as shown in FIGS. 9 to 12, the inner wall of the appearance layer 210 can be provided with a pull-tab structure 216, which can be a blind hole type pull-tab structure or a through hole type pull-tab structure. For example, the pull-tab structure 216 can be arranged on the inner wall of the appearance layer 210 to protrude inwardly, and the center axis of the through hole is arranged along the z direction. When the structural layer 220 is injected onto the inner wall of the appearance layer 210, the injection material enters the blind hole type pull-tab structure or the through hole type pull-tab structure, thereby increasing the connection area between the appearance layer 210 and the structural layer 220, and facilitating to increase the connection stability between the appearance layer 210 and the structural layer 220.

[0165] It should be understood that the present application does not further limit the setting position and the number of the pull-tab structure 216. In addition, the pull-tab structure 216 can be formed by laser perforation or by a mold, and the forming method of the pull-tab structure 216 is not further limited.

[0166] In some embodiments, as shown in FIGS. 9-12, a pull-tab structure 217 can be arranged on the inner wall of the appearance layer 210, which can be a groove type pull-tab structure. For example, the number of the pull-tab structure 217 can be multiple, and the shapes and sizes of different fourth pull-tab structures 217 can be the same or different. For example, part of the pull-tab structure 214 can be a groove structure arranged along the inner wall of the appearance layer 210, which can be arranged along the thickness direction of the appearance layer. For example, the groove structure can be arranged on one side or both sides of the assembly hole 213 along the central axis direction of the appearance layer 210. Of course, the groove structure can also be arranged at other positions, and the setting position and the number of the groove structure are not further limited in the embodiments of the present application, and can be specifically set according to specific conditions. When the structure layer 220 is subjected to NMT injection molding, the groove structure can play a role of pull-tab, thereby reinforcing the appearance layer 210 and the structure layer 220.

[0167] In the embodiments of the present application, by arranging multiple pull-tab structures, the deformation of the appearance layer 210 and the structure layer 220 during NMT injection molding can be reduced. In addition, the contact path between the long appearance layer 210 and the structure layer 220 in the thickness direction of the middle frame assembly 200 can also be extended, that is, the waterproof path between the appearance layer 210 and the structure layer 220 is extended, thereby improving the waterproof effect of the middle frame assembly 200.

[0168] FIG. 13 is a structural schematic diagram of the structure layer 220 of the wearable device 10 provided in the embodiments of the present application. FIG. 14 is another angle structural schematic diagram of the structure layer 220 of the wearable device 10 provided in the embodiments of the present application. Both FIG. 13 and FIG. 14 are structural schematic diagrams of the back of the structure layer 220.

[0169] As shown in FIG. 13, the structure layer 220 can include an annular wall 220a arranged in the thickness direction of the middle frame assembly 200, wherein one side of the annular wall 220a facing the inside of the middle frame assembly 200 is the inner wall of the structure layer 220, and the other side of the annular wall 220a facing away from the inside of the middle frame assembly 200 is the outer wall of the structure layer 220. For example, the inner wall of the structure layer 220 can be provided with multiple assembly structures 224, which are distributed along the circumferential direction of the structure layer 220. The multiple assembly structures 224 can be used to assemble with the components of the bottom shell assembly 500, the battery assembly 300 or the control assembly 400, so that the battery assembly and the control assembly 400 can be fixedly connected with the middle frame assembly 200.

[0170] For example, the assembly structure 224 can be arranged at a position corresponding to the crown assembly 3000, so as to facilitate the installation of the crown assembly 3000, and to isolate the metal device in the structure layer 220 from the appearance layer 210, thereby preventing the metal device inside the structure layer 220 from affecting the antenna characteristics of the appearance layer 210.

[0171] Since the structure layer 220 is a structure made of insulating material, the structure layer 220 can be used to isolate the metal components in the appearance layer 210 and the battery assembly 300 and the control assembly 400 inside the middle frame assembly 200, so as to prevent the metal components in the wearable device 10 from affecting the performance of the antenna radiator. In other words, by arranging the insulating structure layer 220, the clearance requirement of the antenna radiator can be met, thereby ensuring the performance of the antenna.

[0172] It should be noted that the specific shape and arrangement position of the plurality of assembly structures 224 can be set according to specific conditions, and in the present embodiment, no further description is made. In the figure, only a part of the assembly structures 224 on the inner wall of the structure layer 220 is marked. Since there are many assembly structures 224 on the inner wall of the structure layer 220 and the shapes are different, they are not marked one by one.

[0173] In some embodiments, the mounting portion 221 can be arranged on the inner wall of the structure layer 220, wherein the number of the mounting portion 221 corresponds to the number of the connecting portion 211. That is, the number and position of the mounting portion 221 correspond to the connecting portion 211, and in the present embodiment, the number and arrangement position of the mounting portion 221 are not described.

[0174] As shown in FIG. 13, the mounting portion 221 can include a mounting cavity 2212 for accommodating the connecting portion 211, wherein the structure of the mounting cavity 2212 corresponds to the connecting portion 211. When the connecting portion 211 is mounted in the mounting cavity 2212 of the mounting portion 221, a first groove 2211 (see FIG. 6) can be formed between the mounting portion 221 and the connecting portion 211, and a first sealing member 230 can be arranged in the first groove 2211. In the present embodiment, the structure of the mounting cavity 2212 corresponds to the connecting portion 211, that is, the structure of the mounting cavity 2212 is formed by NMT injection molding, so the structure shape of the mounting cavity 2212 matches the structure shape of the connecting portion 211, and therefore the structure of the mounting cavity 2212 is not described further in the present embodiment.

[0175] It should be understood that the structural layer 220 can be formed on the appearance layer 210 by NMT injection molding. As shown in FIGS. 13 and 14, for example, the outer wall of the structural layer 220 can be formed with a first gap filling structure 223a, a second gap filling structure 223b, and a third gap filling structure 223c on the wall surface of the outer wall, where the first gap filling structure 223a is used to fill the micro-gap structure 212a on the appearance layer 210, the second gap filling structure 223b is used to fill the false gap structure 212b on the appearance layer 210, and the third gap filling structure 223c is used to fill the fusion gap structure 212c.

[0176] As shown in FIGS. 13 and 14, for example, the outer wall of the structural layer 220 can be formed with a first gap filling structure 223a, a second gap filling structure 223b, and a third gap filling structure 223c on the wall surface of the outer wall, where the first gap filling structure 223a is used to fill the micro-gap structure 212a on the appearance layer 210, the second gap filling structure 223b is used to fill the false gap structure 212b on the appearance layer 210, and the third gap filling structure 223c is used to fill the fusion gap structure 212c.

[0177] It should be understood that the outer wall of the structural layer 220 can also be formed with other structures on the wall surface of the outer wall, which can fill different structures on the appearance layer 210, and the type of the structure is not limited in the present application.

[0178] The middle frame assembly 200 provided in the embodiments of the present application sets the appearance layer 210 as a metal material and sets the structural layer 220 as an insulating material, so that the middle frame assembly 200 can serve as a radiator of an antenna and can be assembled with the control assembly 400 and the battery assembly 300 in the wearable device 10. In addition, by setting the connection part 211 in which the structural layer 220 is embedded inside the appearance layer 210, a position for electrically connecting the appearance layer 210 and the control assembly 400 can be provided when the control assembly 400 and the battery assembly 300 are assembled, and it is ensured that other metal devices on the control assembly 400 and the battery assembly 300 are isolated from the appearance layer 210 by the structural layer 220, so that the appearance layer 210 can serve as an antenna radiator and can also ensure the clearance of the antenna radiator and improve the performance of the antenna.

[0179] The preparation process of the appearance layer 210 and the structural layer 220 will be described below with reference to FIGS. 15 to 19.

[0180] Referring to FIG. 15, a metal casting blank 710 can be first obtained, and a feeding position 720 can be set at a predetermined position of the metal casting blank 710, which can be a position where a gap is needed, such as a position where the above-mentioned gap structure (micro-gap structure or first gap structure) is located. As an example, the metal casting blank 710 is similar in appearance to the appearance layer 210, and the main difference is that the metal casting blank 710 is not provided with a micro-gap structure or a first gap structure.

[0181] Referring to FIG. 16, then, the line cutting micro-slit processing is performed on the continuous material position 720 to form the micro-slit structure 212a. The number of the micro-slit structure 212a can be two, the slit width of the two micro-slit structures 212a is between 0.1 mm and 0.3 mm, and the width between the two micro-slit structures 212a can be between 0.8 mm and 1.5 mm. The specific description of the micro-slit structure 212a can be referred to the above, which will not be repeated here.

[0182] Referring to FIG. 17, then, the NMT injection can be performed on the metal casting 710 to form the structure layer 220 inside the metal casting 710. The structure layer 220 can be referred to the description above.

[0183] Referring to FIG. 18, then, the continuous material position 720 on the metal casting 710 can be removed by the CNC processing, so that the micro-slit structure 212a can be formed on the surface of the metal casting 710.

[0184] In some embodiments, the micro-slit structure 212a can be directly subjected to the micro-slit oil filling / drop glue surface treatment to obtain the appearance layer 210 as shown in FIG. 18, which has the micro-slit structure 212a but no false seam structure / decorative seam structure.

[0185] In some embodiments, referring to FIG. 19, the false seam structure 212b can be formed on the surface of the metal casting 710 by the CNC processing, and then the subsequent micro-slit oil filling / drop glue surface treatment is performed to obtain the appearance layer 210 as shown in FIG. 19, which has both the micro-slit structure 212a and the false seam structure 212b. That is, if it is required to form the decorative seam structure (or false seam structure 212b) on the surface of the appearance layer 210, the CNC false seam processing can be performed on the corresponding position (the position where the false seam structure is required to be arranged) of the appearance layer 210 before the surface treatment, and then the subsequent micro-slit oil filling / drop glue surface treatment is performed, so that the appearance layer 210 with the false seam structure 212b can be finally formed.

[0186] Considering that the antenna slit structure on the surface of the appearance layer 210 can be rough and the color can be uneven and not beautiful after the CNC removal of the continuous material position and the CNC false seam, the metal part can be subjected to the micro-slit oil filling / drop glue surface treatment to form the appearance layer 210 which is smooth and has corresponding color of the slit structure, thereby increasing the beauty of the smart watch. The exposed antenna slit structure can have one or more colors such as blue, red, white, yellow, etc.

[0187] In some embodiments, in order to shorten the processing time of the appearance layer 210 and improve the processing efficiency of the appearance layer 210, a plurality of metal cast blanks 710 can be stacked and installed when the wire cutting process (i.e., wire cutting micro slit) is performed, so that the slit structure of the plurality of metal cast blanks 710 can be obtained by one time of wire cutting process, for example, at least 3 metal cast blanks 710 can be processed by one time of wire cutting process, which greatly improves the preparation efficiency of the appearance layer 210.

[0188] It should be noted that in some embodiments, the appearance layer 210 and the structure layer 220 can also be processed in the following manner.

[0189] First, the appearance layer 210 can be forged or cast; then the continuous feeding position is arranged at the position where the slit is needed on the appearance layer 210; then the appearance layer 210 is sequentially processed by CNC processing, inner surface sand blasting, outer T treatment, inner embedded nut, wire cutting micro slit and the like; then nano injection is performed on the inner wall of the appearance layer 210; and then the parts after nano injection are sequentially processed by stress relief annealing, hot melting nut, plastic CNC processing, CNC removal of continuous feeding position and micro slit oil filling / drop glue and the like, to finally form the appearance layer 210.

[0190] In some embodiments, if it is needed to form a decorative seam structure (or called false seam structure) on the surface of the appearance layer 210, the CNC false seam processing can be performed at the corresponding position of the appearance layer 210 before the surface treatment, and then the subsequent surface treatment such as micro slit oil filling / drop glue and the like is performed, to finally form the appearance layer 210 with the decorative seam structure.

[0191] In the process of forging or casting the appearance layer 210, the net forming or near net forming of the appearance layer 210 can be directly realized, which reduces a large amount of CNC processing time compared with the traditional block aluminum alloy NMT injection scheme.

[0192] In the process of sand blasting the inner surface of the appearance layer 210, the sand blasting is performed before the T treatment, which can increase the micro surface area of the inner surface of the appearance layer 210, and then increase the contact area between the injection material and the appearance layer 210, and then increase the connection stability between the appearance layer 210 and the structure layer 220. In addition, the uniformity of the T treatment can be increased, and the ease of T treatment corrosion can be improved.

[0193] When the material of the appearance layer 210 is titanium alloy, stainless steel, amorphous zirconium, or the like, a dense metal oxide film can be formed on the surface of the appearance layer 210. Therefore, the dense metal oxide film needs to be removed in the T process, so that the appearance layer 210 can be tightly combined with the structural layer 220. In addition, a plurality of nano micropores can be etched on the surface of the appearance layer 210. In the injection molding process, the injection material can flow into the nano micropores. In other words, part of the injection material can penetrate into the appearance layer 210, thereby improving the sealing and connection stability between the appearance layer 210 and the structural layer 220.

[0194] It should be noted that when the appearance layer 210 is net shaped or near net shaped, the wall thickness of the appearance layer 210 is usually 0.3 mm-0.5 mm. Therefore, the appearance layer 210 is easy to deform in the NMT injection molding process, so that the appearance layer 210 will be plastically deformed or elastically deformed under a large injection pressure after NMT injection molding. To solve this problem, when NMT injection molding is performed, a slide or a pin can be provided at the upper, lower, left and right positions of the appearance layer 210, and the appearance layer 210 is matched with the slide or the pin, that is, the appearance layer 210 is supported in the x or y direction by the mold, thereby solving the deformation problem. The preparation process between the appearance layer 210 and the structural layer 220 can be set according to specific conditions, and will not be further described in the embodiments of the present application.

[0195] It should be understood that through the above two processing methods, the wearable device 10 provided by the present application having a plurality of slit structures 212 can be obtained, and the wearable device 10 can be a smart watch or a smart bracelet.

[0196] In addition, the present application also provides a middle frame assembly, which can be the middle frame assembly 200 described above, and the middle frame assembly can be applied to various electronic devices, such as a smart watch, a smart bracelet, a smart phone, and the like.

[0197] The above describes only the specific embodiments of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of changes or replacements within the technical range disclosed in the present application, which 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 wearable device, comprising: The application relates to a wearable device, which comprises a panel assembly, a middle frame assembly, a bottom shell assembly and a crown assembly, wherein the panel assembly and the bottom shell assembly are arranged at the top end and the bottom end of the middle frame assembly respectively, the panel assembly, the middle frame assembly and the bottom shell assembly form a containing cavity for containing electronic devices, and the crown assembly is mounted on the middle frame assembly. The middle frame assembly comprises an appearance layer and a structure layer, the structure layer is nested in the appearance layer, the appearance layer is a metal appearance layer, and the structure layer is an insulating structure layer. A plurality of antenna slit structures are arranged on the appearance layer in the thickness direction of the wearable device, and part of the structure layer penetrates through the plurality of antenna slit structures and is exposed. The plurality of antenna slit structures comprise first slit structures and second slit structures, the slit width of the first slit structures is between 0.1 mm and 0.3 mm, the slit width of the second slit structures is between 0.8 mm and 1.5 mm, and the second slit structures are located at the mounting position of the crown assembly. The width between adjacent first slit structures is between 0.8 mm and 1.5 mm. The side edge of the middle frame assembly is provided with a mounting hole for mounting the crown assembly, and the mounting hole is in communication with the second slit structure.

2. The wearable device of claim 1, wherein, In the thickness direction of the wearable device, a decorative slit structure is further arranged on the appearance layer, the decorative slit structure is located on the surface of the appearance layer and penetrates part of the appearance layer, and the slit width of the decorative slit structure is equal to that of the first slit structure.

3. The wearable device of claim 1 or 2, wherein, The decorative slit structure is arranged between adjacent first slit structures.

4. The wearable device of any one of claims 1-3, wherein, The decorative slit structure is arranged on one side of the first slit structure, and the width between the decorative slit structure and the adjacent first slit structure is equal to the width between adjacent first slit structures.

5. The wearable device of claim 4, wherein, A connecting part extending to the inside of the containing cavity is arranged on the inner wall of the appearance layer.

6. The wearable device of claim 4, wherein, An installation part matched with the connecting part is arranged on the structure layer, one end of the connecting part penetrates into the installation part, and the other end is exposed to the installation part.

7. The wearable device of any one of claims 1-6, wherein, The connecting part comprises a first connecting section and a second connecting section, one end of the first connecting section is connected to the inner wall of the appearance layer, and the other end of the first connecting section extends to the inside of the appearance layer. One end of the second connecting section is connected to the end of the first connecting section away from the appearance layer, and the other end of the second connecting section extends to the direction away from the first connecting section in the thickness direction of the wearable device.

8. The wearable device of claim 7, wherein, The appearance layer further comprises a plurality of pull glue structures, the plurality of pull glue structures are located on one side or both sides of the plurality of antenna slit structures, and the pull glue structures are used for increasing the bonding force between the appearance layer and the structure layer. The plurality of pull glue structures comprise a first pull glue structure, and the first pull glue structure is located on the first connecting section.

9. The wearable device of claim 8, wherein, An extension part is further arranged on the inner wall of the appearance layer, the extension part extends to the inside of the containing cavity along the appearance layer, one end of the extension part is connected to the inner wall of the appearance layer, and the other end of the extension part is connected to the structure layer.

10. The wearable device of claim 9, wherein, The plurality of pull glue structures further comprise a second pull glue structure, and the second pull glue structure is located on the extension part.

11. The wearable device of claim 9 or 10, wherein, ​ ​ 12. The wearable device of claim 11, wherein, Another end of the extension part is connected with the first connecting section of the connecting part.

13. The wearable device of claim 11 or 12, wherein, The first pull-tab structure and the second pull-tab structure are both blind-hole pull-tab structures, and the opening of the blind-hole pull-tab structure faces the accommodating cavity.

14. The wearable device of any one of claims 9-13, wherein, The plurality of pull-tab structures further include a third pull-tab structure, which is a blind-hole pull-tab structure and is arranged on the inner wall of the appearance layer in the thickness direction of the appearance layer.

15. The wearable device of any one of claims 9-14, wherein, The inner wall of the appearance layer further has a protruding boss inwardly, and the plurality of pull-tab structures further include a fourth pull-tab structure arranged on the boss in the thickness direction of the wearable device.

16. The wearable device of any one of claims 9-15, wherein, The plurality of pull-tab structures further include a fifth pull-tab structure, which is a groove structure arranged on the inner wall of the appearance layer.

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