Wearable device

Abstract

The present disclosure relates to the technical field of electronic devices, and specifically provides a wearable device, including: a ring-shaped metal frame disposed around the side of the wearable device, and a gap between the metal frame and the main board of the wearable device forms an antenna of the device; and a ring-shaped metal bezel disposed around the front edge of the wearable device; the metal bezel and the metal frame are electrically connected through a plurality of connecting parts, and the distance between any two adjacent connecting parts in the first direction is less than 1 / 4 of the wavelength of the highest operating frequency of the antenna of the wearable device, and the first direction is the direction in which the metal frame surrounds one week. For the wearable device of the present disclosure, the antenna performance is not affected by the metal bezel, and its consistency and performance are better.

Description

Technical Field

[0001] The present disclosure relates to the technical field of electronic devices, and particularly to a wearable device. Background Art

[0002] With the development of electronic devices, intelligent wearable devices are becoming more and more popular among users due to their diverse functions. Taking a smart watch as an example, in addition to the basic timekeeping function, a general smart watch also integrates many functions such as motion assistance, trajectory positioning, connection with intelligent terminals, and calls. These functions all need to be realized by the antenna built in the watch. Therefore, how to improve the antenna performance of wearable devices has always been one of the most important research directions. Summary of the Invention

[0003] In order to improve the antenna performance of wearable devices, a wearable device is provided in an embodiment of the present disclosure.

[0004] In a first aspect, an embodiment of the present disclosure provides a wearable device, including:

[0005] A circular metal frame disposed around the side of the wearable device, and a gap between the metal frame and the main board of the wearable device forms an antenna of the device; and

[0006] A circular metal bezel disposed around the front edge of the wearable device; the metal bezel and the metal frame are electrically connected through a plurality of connecting parts, and the distance between any two adjacent connecting parts in a first direction is less than 1 / 4 of the wavelength of the highest operating frequency of the antenna of the wearable device, and the first direction is the direction in which the metal frame surrounds one week.

[0007] In some embodiments, the plurality of connecting parts are uniformly arranged in the first direction.

[0008] In some embodiments, an insulating filling structure is filled between the metal frame and the metal bezel.

[0009] In some embodiments, the antenna of the wearable device includes at least one of the following:

[0010] A Bluetooth antenna, a satellite positioning antenna, a WiFi antenna, an LTE antenna, or a 5G antenna.

[0011] In some embodiments, an assembly step is provided on one side edge of the metal frame close to the metal bezel, a lug protruding toward the metal frame is formed around the edge of the metal bezel, and the metal bezel is sleeved on the assembly step of the gold border frame through the lug.

[0012] In some embodiments, the connecting portion is a metal spring sheet, one end of which is fixed to the metal frame, and the other end abuts against the inner wall of the lug of the metal surface frame; the metal spring sheet applies an elastic force to the metal surface frame away from the side of the metal frame.

[0013] In some embodiments, the metal frame is provided with an assembly hole, and the one end of the metal spring is fixed in the assembly hole.

[0014] In some embodiments, one end of the metal spring is welded to the metal frame.

[0015] In some embodiments, the connecting portion is a buckle integrally formed on the assembly step, and the buckle is formed with a protrusion abutting against an inner side wall of the lug on a side facing the lug of the metal face frame.

[0016] In some embodiments, the wearable device is a smart watch or a smart bracelet.

[0017] The wearable device provided in the embodiment of the present disclosure includes a metal frame and a metal face frame. The metal frame is arranged around the side of the device and serves as the radiator of the device antenna, while the metal face frame is arranged around the front edge of the device. The metal face frame and the metal frame are electrically connected through multiple connecting parts, thereby changing the uncertain electrical connection contacts between the frame and the face frame during use into a connecting part structure, so that the face frame and the frame are electrically connected at a certain position, thereby improving the consistency of the antenna. In addition, the distance between any two adjacent connecting parts in the first direction is less than 1 / 4 of the wavelength of the highest operating frequency of the antenna. Since the gap length for generating electromagnetic wave resonance is required to be at least 1 / 4 of the first resonant wavelength, the distance between any two adjacent connecting parts is less than 1 / 4 of the wavelength of the highest operating frequency of the antenna, thereby effectively avoiding the generation of clutter interference and greatly improving the radiation performance of the antenna. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the specific embodiments of the present disclosure or the technical solutions in the prior art, the drawings required for use in the specific embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 It is a structural schematic diagram of a smart watch in the related art.

[0020] Figure 2 yes Figure 1 Schematic diagram of the cross-section structure of a smart watch.

[0021] Figure 3 It is a schematic structural diagram of a reference antenna.

[0022] Figure 4 It is a curve graph of the return loss of the reference antenna.

[0023] Figure 5 It is a schematic structural diagram of the reference antenna at an electrical connection point.

[0024] Figure 6 is Figure 5 The curve graph of the return loss of the reference antenna in the case.

[0025] Figure 7 It is a curve graph of the return loss of the reference antenna at four electrical connection points.

[0026] Figure 8 It is a curve graph of the return loss of the reference antenna at six electrical connection points.

[0027] Figures 9a to 9b It is a schematic structural diagram of the connecting part in some embodiments of the present disclosure.

[0028] Figures 10a to 10b It is a schematic structural diagram of the connecting part in some other embodiments of the present disclosure.

[0029] Figures 11a to 11b It is a schematic structural diagram of the connecting part in some further embodiments of the present disclosure. Specific embodiments

[0030] Next, the technical solutions of the present disclosure will be clearly and completely described in conjunction with the accompanying drawings. Obviously, the described embodiments are some embodiments of the present disclosure, rather than all embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present disclosure. In addition, the technical features involved in different embodiments of the present disclosure described below can be combined with each other as long as they do not conflict with each other.

[0031] The wearable device provided by the embodiments of the present disclosure can be applicable to any device type suitable for implementation, such as wristband devices represented by smart watches and smart bracelets; for another example, head-mounted devices represented by smart glasses and smart earphones; for still another example, wearable devices represented by smart clothing; etc.

[0032] For ease of description, in the following, the wearable device is taken as an example of a smart watch. However, those skilled in the art should understand that the following embodiments are equally applicable to other types of wearable devices, and the present disclosure makes no limitation thereto.

[0033] Nowadays, when people choose a smart watch, in addition to considering the functions of the watch, the appearance of the watch is also an important consideration. Therefore, how to improve the texture and aesthetics of the watch's appearance has always been one of the key research directions of manufacturers. To increase the texture of smart watches, metal materials such as alloys or stainless steel have been widely used in the appearance design of watches. For example, most smart watches adopt the design of a metal middle frame, and this metal middle frame is also used as the radiator of the antenna. In addition, from the perspective of appearance design, if a metal bezel is separated from the top of the metal middle frame, then the metal bezel can be colored differently from the metal middle frame and processed with different scales, and the black edge of the screen can be blocked to achieve a beautiful and cool appearance effect and improve the grade of the device. Therefore, in smart watches, more and more metal materials are added to the shell.

[0034] Figure 1 , Figure 2 shows the structure of a smart watch in a related technology. As Figure 1 shown, the appearance part of this smart watch includes a metal frame 100 and a metal bezel 200. The metal frame 100 is a circular metal middle frame, which is arranged around the side of the watch. In a smart watch, the metal frame 100 not only serves as the shell structure of the watch, but also needs to cooperate with the main board of the device to form a slot antenna structure.

[0035] Specifically, for a smart watch, many of its functions need to be realized through an antenna. For example, Bluetooth, satellite positioning, WiFi, calls, etc. all require an internal antenna to radiate electromagnetic wave signals. For a smart watch with a metal middle frame, it generally uses the gap between the metal frame 100 and the watch main board to form an antenna structure. By setting a grounding point on the metal middle frame and connecting it to the feeding module on the main board, the corresponding antenna structure can be formed.

[0036] The metal bezel 200 serves as the assembly structure on the front of the watch. In a smart watch, the functions of the metal bezel 200 mainly include two aspects:

[0037] 1) As Figure 2 shown, the screen 300 and the metal frame 100 need to be fixedly assembled through a stepped step, and the part of the stepped step that supports the edge of the screen 300 cannot be used as a display area, which appears as a "black edge" on the appearance of the watch. In today's pursuit of the ultimate screen-to-body ratio, the "black edge" is undoubtedly unacceptable to users and manufacturers are committed to removing it. By setting the metal bezel 200 at the position of the "black edge", the "black edge" structure can be blocked by the appearance of the metal, greatly improving the appearance texture and enhancing the user experience.

[0038] 2) For a watch, its metal bezel 200, as a circular outer ring, can implement various functions on the metal bezel 200. For example, time scales can be added as the watch indication scales; for another example, various scale-like scales can be added as additional functions of the watch; for yet another example, various decorative structures and patterns can be set as the appearance of the watch; and so on.

[0039] Based on this, more and more smart watches are provided with a metal bezel 200 on the front, and the metal bezel 200 and the metal frame 100 are fixedly connected by bonding with a filling adhesive. However, in actual use, the inventor of this case found that the antenna consistency and performance of such smart watches with a metal bezel 200 are relatively poor. The inventor further studied and found that this is because: for the antenna structure, the metal frame 100 and the metal bezel 200 are two separate metal individuals, and there must be a certain small gap (generally between 0.025 mm and 0.1 mm) between the two metal parts after assembly. Although the gap is electrically isolated by filling dielectric materials such as adhesive, during the actual use of the watch, for example, when a part of the metal bezel 200 is squeezed, the metal bezel 200 and the metal frame 100 will have single-point or multi-point electrical contacts with unfixed positions, thus destroying the original antenna performance and further affecting the functions of the entire watch system.

[0040] To further explain this problem, the following will be described in detail in combination with the test results in an example. For the convenience of description, the antenna structure in this example is called a "reference antenna", and the reference antenna can be a relatively broadband antenna, and its structure is referred to Figure 3 for illustration, that is, it is achieved by the distance between the metal frame 100 and the main board inside the watch. Those skilled in the art can understand this antenna structure and working principle, and will not be elaborated here.

[0041] First, Figure 4 a curve graph of the return loss (S-parameter) of the reference antenna is given when the metal bezel 200 is not provided.

[0042] Secondly, considering that during the actual use of the watch, the positions where the metal bezel 200 and the metal frame 100 have electrical contacts are uncertain. Here, as Figure 5 shown, it is assumed that an electrical contact point P1 is generated at the "3 o'clock" position between the metal bezel 200 and the metal bezel 100. For the sake of generality, we rotate the electrical contact point P1 by different angles (0°, 90°, 215°, 315°) in the clockwise direction. Figure 6 The curve graph of the return loss of the reference antenna is shown as the electrical contact point P1 between the metal bezel 200 and the metal frame 100 rotates.

[0043] Through Figure 6It can be clearly seen that the return loss of the reference antenna varies greatly with the position of P1, and there are many clutter signals in multiple places within the entire frequency band range. Moreover, the positions where the clutter signals appear also change with the change of the position of the electrical contact point P1. It can be clearly known from the results that the uncertain electrical contact points lead to the inability to guarantee the consistency and performance of the antenna, which will greatly affect the system functions of the watch.

[0044] Based on the above research findings of the inventors on the defects existing in the related technologies, a wearable device is provided in the embodiments of the present disclosure. The main inventive concept of the present disclosure is that the metal frame 100 and the metal bezel 200 are electrically connected through a plurality of connecting parts, thereby improving the uncertain electrical contact points into a definite electrical connection structure, and optimizing the number and positions of the electrical connection points to improve the consistency and performance of the antenna.

[0045] In some embodiments, the wearable device still takes Figure 1 the shown smart watch as an example. The smart watch includes a circular metal frame 100 and a circular metal bezel 200. The metal frame 100 is arranged around the side of the watch, and the metal frame 100 serves as the radiator of the antenna. The metal bezel 200 is arranged around the front edge of the watch, and the metal bezel 200 is electrically connected to the metal frame 100 through a plurality of connecting parts. And among the plurality of connecting parts, the distance between any two adjacent connecting parts in the first direction is less than 1 / 4 of the wavelength of the highest operating frequency of the antenna. The first direction is the direction in which the metal frame 100 surrounds one week.

[0046] It is worth noting that in these embodiments, the function of the connecting part is to enable the metal bezel 200 and the metal frame 100 to achieve electrical connection at the set position of the connecting part. For example, the connecting part can be a metal sheet arranged in the gap between the two. The specific structure and implementation manner of the connecting part will be described in detail in the following embodiments and will not be elaborated here for the time being.

[0047] And "1 / 4 of the wavelength of the highest operating frequency of the antenna" means that for the watch, its antenna often includes multiple ones, such as a Bluetooth antenna, a satellite positioning antenna, etc. The electromagnetic wave operating frequencies of these antennas are different, and the "wavelength of the highest operating frequency" refers to the wavelength of the antenna with the highest operating frequency among these antennas. This will be described in detail in the following text and will not be elaborated here for the time being.

[0048] The "first direction" refers to the direction in which the metal frame 100 surrounds one week. For example Figure 1 as shown, the "first direction" is the circumferential direction of the metal frame 100, and the "distance in the first direction" is the arc length on the surface of the metal frame 100. Of course, the same applies to frames of other shapes, such as rectangular, rhombic, triangular, or other irregular shapes, which can be understood by those skilled in the art.

[0049] As described above, the wearable device provided by the embodiments of the present disclosure realizes electrical connection by arranging a plurality of connecting parts between the metal bezel 200 and the metal frame 100, thereby improving the electrical contact points at uncertain positions into electrical connections at fixed positions, and ensuring the consistency of the antenna. Moreover, the distance between any two adjacent connecting parts in the first direction is less than 1 / 4 of the wavelength of the highest operating frequency of the antenna. Since the length of the slot required to generate electromagnetic wave resonance is at least 1 / 4 of the first resonance wavelength, the distance between any two adjacent connecting parts is less than 1 / 4 of the wavelength of the highest operating frequency of the antenna, thereby effectively avoiding the generation of clutter interference and greatly improving the radiation performance of the antenna.

[0050] Specifically, for the wearable device of the present disclosure to implement the above solution, the design ideas mainly include two aspects: one is the number and position distribution of electrical connection points; the other is the specific structure for realizing electrical connection. The following will specifically illustrate these two points in combination with a specific embodiment.

[0051] Based on the working principle of the slot antenna, for a slot antenna, the basic requirement for it to generate working resonance is that the slot length is at least 1 / 4 of the first resonance wavelength, such as a slot antenna with one end of the 1 / 4 wavelength open, a 1 / 2 wavelength slot antenna, etc. Those skilled in the art should understand this and it will not be elaborated here.

[0052] There is the following relationship between the working frequency f and the wavelength λ of the antenna:

[0053]

[0054] In the formula, C is the speed of light. It can be seen that the higher the working frequency f, the smaller its wavelength λ, and the smaller the requirement for the slot length. In other words, among the multiple antennas of the watch, as long as it is ensured that no clutter is generated at the highest working frequency, it can meet the antennas of other working frequencies.

[0055] Based on the above description, it can be known that the arc length of the slot formed by two adjacent connecting parts should be ensured to be less than 1 / 4 of the wavelength of the highest operating frequency of the antenna.

[0056] In one example, if the multiple connecting parts are unevenly distributed in the first direction (circumferential direction), it should be ensured that among the arc lengths of the slots formed by two adjacent connecting parts, the largest arc length is less than 1 / 4 of the wavelength of the highest operating frequency of the antenna.

[0057] In another example, if the multiple connecting parts are evenly distributed in the first direction, it is only necessary to ensure that each slot arc length is less than 1 / 4 of the wavelength of the highest operating frequency of the antenna.

[0058] For the antenna performance, obviously, the uniform distribution is the most reasonable form of electrical connection distribution. Therefore, in the present embodiment, a plurality of connection portions are uniformly distributed in the first direction. Thus, according to the diameter or circumference of the watch, the number of connection portions can be determined.

[0059] In one example, still taking the Figure 1 smart watch in the embodiment as an example, the number of connection portions is set to 4, and they are uniformly distributed in the circumferential direction. Figure 7 The echo loss curve graph of the antenna in this example is given in Figure 7 . For the sake of generality, still rotate the four connection portions by different angles (0°, 30°, 60°) in the clockwise direction, so as to obtain the curve graph as

[0060] shown. Figure 7 As can be seen with reference to Figure 6 shown, compared with one electrical connection point in

[0061] , since the four electrical connection points effectively reduce the arc length between adjacent two connection portions, in the case of having four connection portions, clutter appears only in the range where the frequency is greater than 2.3 GHz, while in the range where the frequency is lower than 2.3 GHz, it has better consistency and antenna performance. Figure 7 Although the

[0062] example can improve the consistency and performance of the antenna in the range where the operating frequency is lower than 2.3 GHz, it is not enough for the design of the smart watch. For example, a smart watch generally includes a Bluetooth antenna, a WiFi antenna, and a satellite positioning antenna. The center operating frequencies of the Bluetooth antenna and the WiFi antenna are 2.44 GHz, and the general civilian center operating frequency of the satellite positioning antenna (GPS antenna) is 1.575 GHz. Taking the Bluetooth antenna with the highest operating frequency as an example, its wavelength in the air is about 125 mm, and its quarter wavelength is about 30 mm. For a watch with a maximum diameter of 50 mm, with four connection portions uniformly distributed, the arc length between adjacent two connection portions is about 40 mm. That is to say, the distance between adjacent two connection portions, 40 mm, is greater than 1 / 4 (30 mm) of the wavelength of the highest operating frequency. Therefore, for the Bluetooth and WiFi antennas with a frequency of 2.4 GHz, clutter will still be generated.

[0063] Therefore, in the embodiments of the present disclosure, it is necessary to satisfy that the arc length between two adjacent connection parts is less than 1 / 4 of the wavelength of the maximum operating frequency. For example, in the above example, as long as the arc length between two adjacent electrical connection points is less than 30 mm, it can be ensured that in the frequency band below 2.4 GHz, the antenna has better consistency and performance. That is, at least 6 connection parts are provided on the circumference of the metal frame 100. In the case of evenly arranging 6 connection parts, the arc length between two adjacent connection parts is about 26 mm, which can fully meet the requirements.

[0064] It should be noted that although too many electrical connection points can also improve the consistency of the antenna, too many connection points will also increase the complexity of the structure and the radiation impedance. Therefore, in some preferred embodiments, it is sufficient to select the minimum number of connection parts that meet the above conditions.

[0065] Next, the embodiment of evenly distributing 6 connection parts is verified. For the sake of generality, the connection parts are also rotated clockwise by different angles (0°, 20°, 40°), and the obtained echo loss curves are as Figure 8 shown.

[0066] Through Figure 8 the results, it can be seen that compared with the embodiment of Figure 7 with four electrical connection points, in the case of 6 electrical connection points, clutter only appears in the frequency band greater than 3.2 GHz, while for the frequency band below 3.2 GHz, the antenna has good consistency and performance. For a smart watch, the performance guarantee below 3.2 GHz is sufficient to meet the design requirements of the Bluetooth antenna at 2.4 GHz.

[0067] It should be noted that through the above, it can be known that in the present embodiment, through the electrical connection of the connection parts to the metal frame 100 and the metal bezel 200, in the normal state, the distance between two adjacent connection parts already meets the design requirements. Therefore, even if the metal bezel 200 is pressed, making the metal bezel 200 and the metal frame 100 have more electrical connection points, which is equivalent to increasing the number of electrical connection points on the basis of the present embodiment. According to the above principle, it can be known that it will not affect the performance of the antenna, and still has the effects described in the present embodiment.

[0068] Of course, it should be noted that the core inventive concept of the embodiments of the present disclosure is: setting the distance between any two adjacent connection parts in the first direction to be less than 1 / 4 of the wavelength of the maximum operating frequency of the antenna. In other words, regardless of how many antennas with different operating frequencies the device includes, as long as the antenna with the maximum operating frequency meets the design requirements, the remaining antennas can meet the requirements.

[0069] For example, in a wearable device, it may further include a 4G LTE antenna (0.7 GHz to 2.69 GHz), a WiFi 5.8 GHz antenna, a 5G n77 (3.3 GHz to 4.2 GHz) antenna, etc. By increasing the number of connection parts, the distance between any two adjacent connection parts can be made less than 1 / 4 of the wavelength of the highest operating frequency, without restricting the type and operating frequency of the antenna. Those skilled in the art should understand this, and the present disclosure will not elaborate further.

[0070] After the working principle of the embodiments of the present disclosure is described above, the specific embodiments of the connection part will be described in detail below.

[0071] Still taking Figure 1 the smart watch shown as an example, as Figure 2 shown, the metal bezel 100 and the metal face frame 200 are snapped together through the assembly bosses. Specifically, a circular assembly step is provided on the metal bezel 100, and a circle of lugs is formed at the edge of the metal face frame 200, so as to realize the assembly of the metal face frame 200 and the metal bezel 100 by using the cooperation between the lugs and the assembly step. In the assembly gap between the two, an insulating adhesive needs to be filled to form a filling structure. The filling structure can insulate the two on the one hand and realize bonding and fixing on the other hand.

[0072] On this basis, the connection part in the embodiments of the present disclosure can be arranged in the abutting gap between the metal face frame 200 and the metal bezel 100, and an electrical connection point is formed through the connection part to electrically connect the two.

[0073] In one example, as Figure 9a 、 9b shown, the connection part 500 is 6 metal elastic sheets evenly arranged on the metal bezel 100. Specifically, 6 assembly holes are opened on the metal bezel 100, and each metal elastic sheet is correspondingly installed in an assembly hole. One end of the metal elastic sheet is fixedly arranged in the assembly hole, and the elastic end of the other end abuts against the inner side wall of the lug of the metal face frame 200. This electrical connection method is applicable to the titanium alloy and aluminum alloy metal bezels 100 that are not easy to weld.

[0074] In another example, as Figure 10a 、 10b shown, the connection part 500 is also 6 metal elastic sheets evenly arranged on the metal bezel 100. The difference is that one end of the metal elastic sheet is fixedly connected to the metal bezel 100 by welding, and the elastic end of the other end abuts against the inner side wall of the lug of the metal face frame 200. This electrical connection method is applicable to the stainless steel metal bezel 100 that is easy to weld.

[0075] In this embodiment, the elastic force exerted by the metal elastic sheet on the metal bezel 200 is in the radially outward direction along the hand side. Therefore, after the metal bezel 200 is assembled with the metal middle frame 100, the metal elastic sheet can also apply a radial force, making the assembly of the metal bezel 200 more firm and at the same time making the electrical connection points between the metal bezel 200 and the metal frame 100 more stable.

[0076] In some other embodiments, the structure of the connecting portion is as Figure 11a , 11b shown. The connecting portion is a buckle 510 integrally formed on the assembly step of the metal frame 100, and the buckles 510 are evenly distributed on the circumference of the metal frame 100. On one side wall of the buckle 510 facing the lug of the metal bezel 200, a protrusion 520 is formed. Thus, after the metal bezel 200 is assembled with the metal frame 100, the protrusion 520 abuts against the inner side wall of the lug of the metal bezel 200 to achieve electrical connection between the two. This electrical connection method is applicable to the metal frame 100 made of any metal material.

[0077] Of course, for the structure and setting method of the connecting portion, in addition to the above examples, it can also be in any other form suitable for implementation. Those skilled in the art can understand this, and the present disclosure will not enumerate any more.

[0078] In addition, in the embodiments of the present disclosure, the wearable device is described by taking a smart watch as an example. However, the wearable device of the present disclosure is not limited to smart watches and can also be any other wearable device suitable for implementation. The present disclosure makes no limitation on this.

[0079] As can be seen from the above, the wearable device provided by the embodiments of the present disclosure realizes electrical connection by arranging a plurality of connecting portions between the metal bezel 200 and the metal frame 100, thereby improving the electrical contact points at uncertain positions to fixed-position electrical connections and ensuring the consistency of the antenna. And the distance between any two adjacent connecting portions in the first direction is less than 1 / 4 of the wavelength of the highest operating frequency of the antenna. Since the length of the gap generating electromagnetic wave resonance is required to be at least 1 / 4 of the first resonance wavelength, the distance between any two adjacent connecting portions is less than 1 / 4 of the wavelength of the highest operating frequency of the antenna, thereby effectively avoiding the generation of clutter interference and greatly improving the radiation performance of the antenna.

[0080] Obviously, the above embodiments are merely examples given for clear illustration and are not limitations on the embodiments. For those of ordinary skill in the art, other different forms of changes or variations can be made based on the above description. It is not necessary and impossible to enumerate all the embodiments here. And the obvious changes or variations derived therefrom are still within the protection scope of the present disclosure.

Claims

1. A wearable device, characterized in that, include: Screen; Motherboard; An annular metal frame is arranged around the side of the wearable device, and the gap between the metal frame and the mainboard forms the antenna of the wearable device; and An annular metal frame is arranged around the edge of the screen; The metal face frame and the metal frame are electrically connected through a plurality of connecting parts, and the distance between any two adjacent connecting parts in the first direction is less than 1 / 4 of the wavelength corresponding to the highest operating frequency of the antenna of the wearable device, and the first direction is the direction in which the metal frame surrounds a circle.

2. The wearable device according to claim 1, characterized in that: The plurality of connection portions are evenly arranged in the first direction.

3. The wearable device according to claim 1, characterized in that: An insulating filling structure is filled between the metal frame and the metal surface frame.

4. The wearable device according to claim 1, wherein The antenna of the wearable device includes at least one of the following: Bluetooth antenna, satellite positioning antenna, WiFi antenna, LTE antenna or 5G antenna.

5. The wearable device according to claim 1, characterized in that: An assembly step is provided on one side edge of the metal frame close to the metal face frame, and a lug protruding toward the metal frame is formed around the edge of the metal face frame. The metal face frame is sleeved on the assembly step of the metal frame through the lug.

6. The wearable device according to claim 5, characterized in that: The connecting part is a metal spring sheet, one end of which is fixed on the metal frame, and the other end abuts against the inner side wall of the lug of the metal face frame; the metal spring sheet applies an elastic force to the metal face frame away from the side of the metal frame.

7. The wearable device according to claim 6, characterized in that: The metal frame is provided with an assembly hole, and the one end of the metal spring is fixed in the assembly hole.

8. The wearable device according to claim 6, characterized in that: One end of the metal spring is welded to the metal frame.

9. The wearable device according to claim 5, characterized in that: The connecting portion is a buckle integrally formed on the assembly step, and the buckle is formed with a protrusion abutting against the inner side wall of the lug on one side of the lug facing the metal surface frame.

10. The wearable device according to claim 1, characterized in that: The wearable device is a smart watch or a smart bracelet.

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