WO2022001607A1 - 可穿戴设备 - Google Patents

可穿戴设备 Download PDF

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Publication number
WO2022001607A1
WO2022001607A1 PCT/CN2021/099193 CN2021099193W WO2022001607A1 WO 2022001607 A1 WO2022001607 A1 WO 2022001607A1 CN 2021099193 W CN2021099193 W CN 2021099193W WO 2022001607 A1 WO2022001607 A1 WO 2022001607A1
Authority
WO
WIPO (PCT)
Prior art keywords
antenna
middle frame
metal middle
circuit board
wearable device
Prior art date
Application number
PCT/CN2021/099193
Other languages
English (en)
French (fr)
Inventor
刘兵
赵梦龙
高建明
孙晓玉
杨育展
李建铭
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to US18/009,445 priority Critical patent/US20230231302A1/en
Priority to EP21834421.6A priority patent/EP4145626A4/en
Publication of WO2022001607A1 publication Critical patent/WO2022001607A1/zh

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Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G17/00—Structural details; Housings
    • G04G17/02—Component assemblies
    • G04G17/04—Mounting of electronic components
    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G17/00—Structural details; Housings
    • G04G17/02—Component assemblies
    • G04G17/04—Mounting of electronic components
    • G04G17/045—Mounting of the display
    • G—PHYSICS
    • G04—HOROLOGY
    • G04R—RADIO-CONTROLLED TIME-PIECES
    • G04R60/00—Constructional details
    • G04R60/06—Antennas attached to or integrated in clock or watch bodies
    • G04R60/10—Antennas attached to or integrated in clock or watch bodies inside cases
    • G04R60/12—Antennas attached to or integrated in clock or watch bodies inside cases inside metal cases
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/27—Adaptation for use in or on movable bodies
    • H01Q1/273—Adaptation for carrying or wearing by persons or animals
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
    • H01Q13/10—Resonant slot antennas
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/28—Combinations of substantially independent non-interacting antenna units or systems
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/0407—Substantially flat resonant element parallel to ground plane, e.g. patch antenna
    • H01Q9/0421—Substantially flat resonant element parallel to ground plane, e.g. patch antenna with a shorting wall or a shorting pin at one end of the element
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/30—Resonant antennas with feed to end of elongated active element, e.g. unipole

Definitions

  • the present application relates to the field of smart wearable technologies, and in particular, to a wearable device.
  • Smartwatches are one of the most commonly used wearable devices, which integrate communication functions and need to set up antennas to transmit or receive electromagnetic signals.
  • the volume of smart watches is very small, and the number and types of antennas are increasing. Therefore, it is very difficult to reasonably utilize the space of smart watches to realize the design of antennas.
  • the embodiment of the present application provides a wearable device, which can reasonably utilize the space inside the wearable body to realize the design of the antenna.
  • an embodiment of the present application provides a wearable device, including a wearable body, where the wearable body includes: a cover plate, a screen assembly, an antenna bracket, a first antenna, a metal middle frame, a circuit board, and a bottom case; the The cover plate and the bottom case are respectively connected on both sides of the metal middle frame, the screen assembly is connected on the side of the cover plate facing the bottom case, and the circuit board is located on the metal middle frame, on the side of the bottom case.
  • the screen assembly and the bottom case are enclosed in the space; the end of the screen assembly, the inner wall of the metal middle frame, and the inner wall of the cover plate are jointly enclosed to form an accommodating space, and the antenna bracket is provided with In the accommodating space, the first antenna is disposed on the antenna support and connected to the circuit board through a feed point.
  • the wearable device by arranging the antenna in the accommodation space between the screen component and the metal middle frame, on the one hand, the space inside the wearable device can be reasonably used, and on the other hand, the wearable device can be realized On the other hand, the first antenna disposed in the accommodating space is far away from the user's arm and the device in the wearable body, which can reduce the absorption of the human body and the influence of the metal device on the performance of the antenna.
  • the antenna support is fixed on the metal middle frame and/or the cover plate.
  • the antenna bracket can be fixed on the metal middle frame or cover plate to ensure that it is located in the accommodating space and is firmly connected.
  • the antenna support includes a support body and a wiring part, the support body is arranged in a ring shape, the wiring part is protruded and provided on a part of the length of the support body, and the metal wiring and disposed on the wiring portion to form the first antenna.
  • the annular bracket body is easy to assemble and disassemble, and the metal wiring is arranged on the wiring part by the laser direct forming technology, which is convenient for processing.
  • the height of the wire routing portion in the thickness direction of the wearing body is not lower than the height of the metal middle frame.
  • the wiring portion is flush with or higher than the upper edge of the metal middle frame, so that the influence of the metal middle frame on the metal antenna on the wiring portion can be reduced.
  • the wiring portion is as far away as possible from the circuit board and close to the cover plate, which can minimize the influence of metal components such as screen components and circuit boards inside the wearable body on the first antenna.
  • the first antenna is far away from the arm, so that it is less absorbed by the human body, and the drop of the hand mold is small.
  • the antenna bracket further includes an extension portion, the bracket body extends toward the direction close to the metal middle frame to form the extension portion, and a limiting protrusion is provided on the inner wall of the metal middle frame The extension part is glued between the cover plate and the upper surface of the limiting boss.
  • the antenna bracket is glued between the cover plate and the limiting boss through the extension part, which can realize reliable fixing on the one hand and waterproofing on the other hand.
  • the first antenna includes a first radiator and/or a second radiator
  • the first radiator is a GNSS antenna
  • a first feed point is provided on the first radiator
  • the second radiator is a BT/WIFI antenna
  • the second radiator is provided with a second feed point.
  • the first antenna arranged on the antenna bracket is affected by peripheral devices, has a short length, and is less affected by metal devices, and is suitable for designing high-frequency antennas.
  • the first antenna is a metal wire plated on the antenna support; or, the first antenna is a metal piece embedded on the antenna support; or, all The first antenna is a flexible circuit board attached to the antenna support.
  • first antenna disposed on the antenna support, and metal traces, metal inserts and flexible circuit boards can all be used as the first antenna.
  • the first antenna is fed through a spring sheet, a screw or a metal sheet.
  • the power feeding can be smoothly realized.
  • the main circuit board can be fixed on the metal middle frame by fasteners such as screws to ensure the reliability of the main circuit board in the wearable body.
  • the screw can be used to realize the feeding and grounding of the antenna, which is beneficial to Reduce the number of parts and improve the overall space utilization of wearable devices.
  • the width of the first antenna is 0.6mm-0.8mm.
  • the width of the first antenna can ensure the formability and consistency of processing, and at the same time, there is a large distance between the first antenna and the metal middle frame and the screen assembly, which can reduce the impact of the metal middle frame and the screen assembly on the performance of the first antenna .
  • the circuit board is connected to the metal middle frame through a third feed point, a first ground point, and a second ground point, respectively. connected, the circuit board, the metal middle frame, and the gap between the circuit board and the metal middle frame form a second antenna.
  • the gap between the main circuit board and the metal middle frame to design a slot antenna, there is no need to open a slit on the metal middle frame and the bottom shell, which is conducive to improving the aesthetics of the wearable body and giving users a better visual experience.
  • it is beneficial to The processing and assembly of the body shell of the wearable body is beneficial to the waterproof design of the whole machine.
  • the coexistence design of the first antenna and the second antenna can solve the problem of bandwidth realization of the antenna and the splitting of the communication system, which can better reduce the insertion loss of the radio frequency channel and improve the performance of the antenna.
  • the second antenna is a Cell antenna and/or a GNSS antenna.
  • the second antenna can generate n ⁇ /2 resonance, covering low frequency, medium frequency and high frequency, and the second antenna is less affected by the metal middle frame and the metal devices in the wearable body, so it is suitable as a low frequency antenna.
  • the metal middle frame is grounded through an inductor or capacitor for tuning.
  • the resonant frequency ratio can be adjusted to expand the coverage frequency band of the second antenna.
  • a third ground point is further provided between the circuit board and the metal middle frame, and the third ground point is located between the third feed point and the second ground point between.
  • a third ground point is set, and by connecting an inductor or a capacitor at the third ground point, the resonant frequency ratio can be adjusted to expand the coverage frequency band of the second antenna.
  • the width of the slit is 0.5mm-1.8mm.
  • the width of the slot is much smaller than the wavelength corresponding to the resonant frequency of the slot antenna, which is limited by the arrangement of the devices in the wearable body, and the width of the slot is small, which can meet the formation conditions of the slot antenna.
  • a wearable device including a wearable body, where the wearable body includes: a display screen, a second antenna, a metal middle frame, a circuit board, and a bottom case; the display screen and the bottom
  • the shells are respectively connected on both sides of the metal middle frame, and the circuit board is located in the space enclosed by the metal middle frame, the display screen and the bottom case; the circuit board and the metal middle frame There is a gap between them, and the circuit board is connected to the metal middle frame through the third feed point, the first ground point, and the second ground point, respectively.
  • the circuit board, the metal middle frame, and the circuit board and the The gap between the metal middle frames forms the second antenna.
  • the second antenna is a Cell antenna and/or a GNSS antenna.
  • a third ground point is further provided between the circuit board and the metal middle frame, and the third ground point is located between the third feed point and the second ground point between.
  • the metal middle frame is grounded through an inductor or capacitor for tuning.
  • the width of the slit is 0.5mm-1.8mm.
  • the second antenna is fed through a spring sheet, a screw or a metal sheet.
  • FIG. 1 is a schematic structural diagram of a wearable device provided by an embodiment of the present application
  • FIG. 2 is a schematic diagram of a film layer structure of a display screen provided by an embodiment of the present application.
  • FIG. 3 is a schematic structural diagram of a screen assembly in a wearable device according to an embodiment of the present application.
  • FIG. 4 is a schematic structural diagram of a connection between a screen assembly and a main circuit board according to an embodiment of the present application
  • FIG. 5 is a top view of a screen assembly and a metal middle frame provided by an embodiment of the present application.
  • FIG. 6 is a schematic structural diagram of arranging an antenna in an accommodating space according to an embodiment of the present application.
  • FIG. 7 is a schematic diagram of an exploded structure of a part of a device of a wearable body of a wearable device according to an embodiment of the present application;
  • FIG. 8 is a schematic structural diagram of a stent provided by an embodiment of the present application.
  • FIG. 9 is a schematic cross-sectional structure diagram of a wearable device provided by an embodiment of the present application.
  • FIG. 10 is a schematic cross-sectional structure diagram of another wearable device provided by an embodiment of the present application.
  • FIG. 11 is a schematic structural diagram of a connection between a first antenna and a circuit board of a wearable device according to an embodiment of the present application;
  • FIG. 12 is a schematic structural diagram of a first antenna according to an embodiment of the present application.
  • FIG. 13 is a S11 diagram of a first radiator provided by an embodiment of the application.
  • FIG. 14 is a S11 diagram of a second radiator provided by an embodiment of the application.
  • FIG. 15 is a schematic structural diagram of a second antenna according to an embodiment of the present application.
  • FIG. 16 is a S11 diagram of a second antenna provided by an embodiment of the application.
  • 17 is a schematic diagram of an electric field distribution of a second antenna according to an embodiment of the present application.
  • FIG. 18 is a diagram of S11 corresponding to the second antenna provided by an embodiment of the application when the switch switches between different states;
  • FIG. 19 is another schematic structural diagram of a second antenna provided by an embodiment of the application.
  • FIG. 20 is a schematic structural diagram of the coexistence of a first antenna and a second antenna according to an embodiment of the present application.
  • 100-wearing body 11-metal middle frame; 111-limiting steps; 12-cover plate; 13-screen assembly; 131-polarizing plate; 132-touch layer; 133-display panel; 134-substrate; 135-flexible Circuit board; 1351-first outlet; 1352-second outlet; 1353-first bending; 1354-second bending; 136-optical glue; 14-bottom case; 15-main circuit board; 151-connection part; 16 - battery;
  • the wearable device may be an electronic device such as a smart watch or a smart bracelet.
  • the front side is the display surface
  • the back side is the side of the watch close to the user's arm.
  • the positive direction of the Z axis is the direction from the back to the front of the watch in the thickness direction of the watch
  • the positive direction of the X axis is the direction from the nine o'clock position to the three o'clock position of the watch
  • the Y axis The positive direction of the watch is the direction from the six o'clock position to the twelve o'clock position.
  • FIG. 1 is a schematic structural diagram of a wearable device provided by an embodiment of the present application.
  • the wearable device provided in the embodiment of the present application may include a wearable body 100 and a watch strap (not shown in the figure), and the wearable body 100 and the watchband are detachably connected by a watchband connecting assembly 400, which is convenient for disassembly
  • the watch band is repaired and replaced, or, the wearable body 100 can also be integrated with the watch band.
  • the wearable body 100 includes a casing and a display screen disposed on the front of the casing and playing a display role.
  • the casing includes a metal middle frame 11 and a bottom case.
  • the metal middle frame 11 is a ring-shaped middle frame.
  • the display screen is set together to form an internal space for accommodating the main circuit board, the battery and other devices.
  • the metal middle frame 11 has the advantages of high structural strength, high aesthetics, and can be used as an antenna.
  • the shape of the metal middle frame 11 is not specifically limited. In the embodiment of the present application, the metal middle frame 11 is taken as an example to be a circle.
  • the outer diameter of the metal middle frame 11 may be between 38mm and 48mm, for example, 42mm or 46mm . It is not difficult to understand that the metal middle frame 11 can also be oval, rectangular or polygonal.
  • the strap connecting assembly 400 is connected to the metal middle frame 11, and can be integrally formed with the metal middle frame 11. Mounting holes can also be opened on the side walls of the metal middle frame 11 to install buttons.
  • the metal middle frame 11 A first key 51 and a second key 52 are connected to the side wall of the , respectively, as a power key and a function key.
  • the first button 51 and the second button 52 can be respectively disposed near the two o'clock position and the four o'clock position of the wearable body 100, which conform to the hand habit of most users and are convenient for users to operate.
  • the display screen includes a screen assembly and a cover plate 12 covering the surface of the screen assembly, and the cover plate 12 serves to protect the screen assembly.
  • the display screen may be a liquid crystal display screen, a light emitting diode display screen, an organic light emitting diode display screen, a microelectromechanical system display screen or an electronic paper display screen.
  • the display screen may be used to display various content to the user, eg, text, images, videos, icons, symbols, and the like.
  • the display screen may include a touch screen for receiving touch input, gesture input, proximity input, or hovering input of an electronic pen or a user's hand.
  • FIG. 2 is a schematic diagram of a film layer structure of a display screen provided by an embodiment of the present application.
  • the display screen includes a cover plate 12 and a screen assembly 13 .
  • the cover plate 12 is adhered to the top of the screen assembly 13 by optical glue
  • the screen assembly 13 includes a display panel 133 and a touch layer disposed above the substrate 134 in layers.
  • 132 and the polarizing plate 131, the adjacent two-layer structures can be connected by optical glue 136.
  • the display panel 133 may be an organic light-emitting diode (Organic Light-Emitting Diode, OLED), and the touch layer 132 may be disposed separately from the display panel 133, or the touch layer 132 and the display panel 133 may be integrated.
  • OLED Organic Light-Emitting Diode
  • the screen assembly 13 further includes a flexible printed circuit (FPC) 135.
  • FPC flexible printed circuit
  • Both the touch layer 132 and the display panel 133 need to be electrically connected to the main circuit board inside the wearable body 100 through the flexible printed circuit 135.
  • the touch layer 132 and the display panel 133 may be connected to the main circuit board through a flexible circuit board 135, which is made of polyimide or A highly reliable flexible circuit board made of polyamide film as the base material has good bendability. After connecting with the touch layer 132 and the display panel 133, it can be bent to the bottom of the substrate 134, and then Connect to the main circuit board below the screen assembly 13.
  • FIG. 3 is a schematic structural diagram of a screen assembly in a wearable device according to an embodiment of the present application
  • FIG. 4 is a structural schematic diagram of a connection between the screen assembly and a main circuit board according to an embodiment of the present application.
  • the flexible circuit board 135 includes a first outlet 1351 and a second outlet 1352 .
  • the first outlet 1351 drawn from the touch layer 132 protrudes from the edge of the touch layer 132 and faces toward the screen assembly 13 . Bending in the back direction, extending to the edge of the screen assembly 13 at the back of the screen assembly 13 and bending in the direction close to the main circuit board 15 to form a first bend 1353 to connect with the main circuit board 15 under the screen assembly 13.
  • the second outlet 1352 drawn from the display panel 133 extends out from the edge of the display panel 133 and then bends toward the back of the screen assembly 13 . Bend in the direction to form a second bend 1354 to connect with the wiring part 151 on the main circuit board 15 below the screen assembly 13 .
  • the first outgoing wire 1351 and the second outgoing wire 1352 are drawn out from the edge of the screen assembly 13 and then bent toward the back of the screen assembly 13 to reduce the volume occupied by the flexible circuit board 135 .
  • the wirings of the first outlet 1351 and the second outlet 1352 have a wider size, for example, the wiring width of the first outlet 1351 can be 5mm-7mm, and the width of the second outlet 1351
  • the width of the cables 1352 can be 6mm-8mm, and the lengths of the first outlet wires 1351 and the second outlet wires 1352 protruding from the edge of the screen assembly 13 are 1.1mm-1.3mm.
  • the first outlet 1351 and the second outlet 1352 can be arranged far away from each other, so as to reduce mutual interference as much as possible and facilitate the stacking of the whole machine.
  • the first bending 1353 and the second bending 1354 can be arranged side by side, for example, at the nine o'clock position of the screen assembly 13 to reduce the arrangement of the flexible circuit board 135 difficulty.
  • the first outlet 1351 and the second outlet 1352 can be placed together, for example, both are arranged at six points of the screen assembly 13 This makes the area occupied by the outgoing wires of the screen assembly 13 smaller.
  • FIG. 5 is a top view of a screen assembly and a metal middle frame provided by an embodiment of the present application. 3-5, it is not difficult to see that the first outlet 1351, the second outlet 1352, the first bend 1353 and the second bend 1354 are respectively connected to the edge of the main body of the screen assembly 13 and protrude outward for a certain length,
  • the screen assembly 13 is accommodated inside the metal middle frame 11, and there is a accommodating space A between the end of the screen assembly 13 and the inner wall surface of the metal middle frame 11 (the filled part in the figure) for accommodating the first outlet 1351 and the second outlet.
  • Outgoing wire 1352 , first bend 1353 and second bend 1354 It should be noted that the screen assembly 13 has a nearly circular plate-like structure as a whole.
  • the accommodating space A is annular as a whole, except for the space occupied by the first outlet 1351 , the second outlet 1352 , the first bend 1353 and the second bend 1354 , if there is no device arrangement in other spaces, it will cause the overall wear of the main body 100 .
  • the space utilization rate is not high enough, and the internal device arrangement is not compact enough.
  • the accommodating space A has a small volume and is close to the end of the screen assembly 13 , which makes it difficult to lay out electronic components.
  • the accommodating space A is located around the screen assembly 13, away from the user's arm and electronic devices such as batteries in the wearable body 100, in the embodiment of the present application, considering that an antenna is arranged in the accommodating space A, the required volume of the antenna is relatively large. At the same time, the position of the accommodating space A can largely avoid the problems that the antenna is absorbed by the human body and interfered by the device.
  • FIG. 6 is a schematic structural diagram of disposing an antenna in an accommodating space according to an embodiment of the present application.
  • the first antenna 200 may be set in the accommodating space A, and the number of the first antennas 200 is one or more, occupying part of the volume of the accommodating space A, and being connected to the first outgoing line 1351, the second outlet 1352, the first bend 1353 and the second bend 1354 do not interfere.
  • the first antenna 200 may be an electrical antenna with an electrical length of ⁇ /4, serving as a GNSS (Global Navigation Satellite System, satellite navigation system) antenna (L1 band or L5 band), a BT (bluetooth, Bluetooth) antenna, or a WiFi (Wireless Fidelity) antenna. , wireless fidelity) antenna, etc.
  • GNSS Global Navigation Satellite System, satellite navigation system
  • BT bluetooth, Bluetooth
  • WiFi Wireless Fidelity
  • the first antenna 200 can be implemented by adding a separate antenna bracket, using the antenna bracket as a carrier, and plating metal wires on the antenna bracket as an antenna, or embedding a metal insert in the support so that the metal insert acts as an antenna.
  • Antenna or use a flexible circuit board to attach to the bracket as an antenna.
  • the antenna support is an insulating member, such as plastic.
  • FIG. 7 is a schematic diagram of an exploded structure of some components of a wearable body of a wearable device provided by an embodiment of the application
  • FIG. 8 is a schematic diagram of a structure of a bracket provided by an embodiment of the application
  • FIG. 9 is a schematic diagram of a wearable body provided by an embodiment of the application. Schematic diagram of the cross-sectional structure of the wearable device.
  • the wearable body 100 of the wearable device provided by the embodiments of the present application includes a cover plate 12 , a screen assembly 13 , a circuit board 15 , a battery 16 , and a bottom case 14 arranged in sequence from top to bottom.
  • An antenna bracket 21 is provided in the accommodating space A formed between the end of the screen assembly 13 , the inner wall of the metal middle frame 11 and the inner wall of the cover plate 12 , and the first antenna 200 is arranged on the antenna bracket 21 .
  • the size of the cover plate 12 is larger than the size of the screen assembly 13, and the edge of the cover plate 12 and the metal middle frame 11 are connected by means of bonding, clamping, etc.
  • the accommodating space A (the part outlined in dotted circle in the figure) is The inner wall of the edge region of the cover plate 12 , the inner wall of the metal middle frame 11 , and the end of the screen assembly 13 are surrounded and formed.
  • the cover plate 12 may be set to be 2.5D glass or 3D glass, so that the appearance of the wearable body 100 is more aesthetically pleasing, and the user feels smoother when touching.
  • the edge area of the cover plate 12 is bent downward, and the accommodating space A (the part circled in dotted circle in the figure) is enclosed by the inner wall of the bending area of the cover plate 12 , the inner wall of the metal middle frame 11 , and the end of the screen assembly 13 . set up.
  • the antenna bracket 21 may include a bracket body 210 , and the bracket body 210 is the main structural component of the antenna bracket 21 , and is used to ensure the structural strength of the antenna bracket 21 .
  • the bracket body 210 is accommodated in the accommodating space A, and the bracket body 210 can be arranged in a ring shape, occupying the entire length of the annular accommodating space A, or the bracket body 210 can also be set in an arc shape, occupying only a portion of the accommodating space A. part length. Wherein, when the bracket body 210 is arranged in a ring shape, the overall structure of the antenna bracket 21 is more stable, and is easy to assemble and disassemble.
  • the antenna bracket 21 is arranged in the accommodating space A, and its specific fixing method is not specifically limited in this embodiment.
  • the antenna bracket 21 can be connected to the metal middle frame 11 by bonding, clamping, screwing, etc., or it can be It is connected to the inner wall of the cover plate 12 by means of bonding or the like, or fixed to the antenna bracket 21 and the metal middle frame 11 at the same time.
  • a limiting step 111 is protruded from the inner wall of the metal middle frame 11 , the antenna bracket 21 has an extension 211 , and the extension 211 is formed by extending from the bracket body 21 toward the direction close to the metal middle frame 11 .
  • the extension part 211 can be sandwiched between the cover plate 12 and the limit step 111, and connected by adhesive, so as to fix the antenna bracket 21, and seal the gap between the cover plate 12, the antenna bracket 21 and the metal middle frame 11.
  • the gap prevents liquid from entering the inside of the wearable body 100, so as to meet the waterproof requirements of the wearable device.
  • the cover plate 12 is 2.5D glass or 3D glass, the edge region of the cover plate 12 is bent downward, and the extension portion 211 can be sandwiched between the end surface of the cover plate 12 and the limiting step 11 .
  • the first antenna 200 may be implemented by, on the antenna support 21 formed of plastic material, the computer controls the movement of the laser according to the trajectory of the conductive pattern, and the laser is formed directly on the antenna support 21 Metal antenna, namely Laser Direct Structuring (LDS).
  • LDS Laser Direct Structuring
  • the antenna bracket 21 is also provided with a wiring portion 212 .
  • the wiring portion 212 is used to cover the metal wiring to form the first antenna 200 .
  • the size, shape and position of the wiring portion 212 may affect the performance of the first antenna 200 . Influence.
  • the wiring portion 212 may be a part of the bracket main body 210 , that is, an area with a certain length and width at a certain position of the bracket main body 210 , which may be used as the wiring portion 212 .
  • the strip-shaped bosses protruding from the bracket main body 210 can also constitute the wiring portion 212 , and the strip-shaped bosses are adapted to the inner wall surface of the cover plate 12 .
  • the shape, size, position and shape of the strip-shaped boss are matched with the first antenna 200 to be formed, which is beneficial to reduce the technological difficulty of forming the metal traces.
  • FIG. 10 is another schematic cross-sectional structure diagram of a wearable device provided by an embodiment of the present application.
  • the wiring portion 212 can be set to be flush with or higher than the upper edge of the metal middle frame 11 , that is, a2 is flush with or higher than a1 , so that the alignment of the metal middle frame 11 can be reduced. The influence of the metal antenna on the wire portion 212.
  • the wiring portion 212 may be located on a side of the antenna bracket 21 away from the circuit board 15 .
  • the touch layer 132 , the display panel 133 and the flexible circuit board 135 in the screen assembly 13 , as well as the circuit board 15 all have metal, which may affect the performance of the first antenna 200 , so the wiring portion 212 is provided.
  • the influence of the screen component 13 and the circuit board 15 and other metal components inside the wearable body 100 on the first antenna 200 can be reduced as much as possible.
  • the wearable body 100 is worn on the user's arm, the first antenna 200 is far away from the arm, and is less absorbed by the human body and the hand mold is less reduced.
  • FIG. 11 is a schematic structural diagram of the connection between the first antenna and the circuit board of the wearable device according to an embodiment of the present application.
  • the first antenna 200 is a metal wiring covering the wiring portion 212 of the antenna bracket 21 (the shadow filled on the wiring portion 212 in the figure represents the metal wiring), and is opened on the antenna bracket 21 .
  • the conductive vias 213 and the elastic pieces 214 realize electrical connection with the circuit board 15 .
  • the feeding of the first antenna 200 may also be implemented by conducting components such as screws and steel sheets.
  • the antenna bracket 21 is also provided with an avoidance structure (not shown in the figure), for example, at the six o'clock position, the nine o'clock position and the twelve o'clock position, the setting of the avoidance structure can avoid the flexible circuit board 135 on the edge of the screen assembly 13 out of the line.
  • Structures such as reinforcing ribs may also be arranged on the antenna bracket 21 to enhance the strength of the antenna bracket 21 and effectively prevent the performance of the first antenna 200 from being affected by force and deformation of the antenna bracket 21 .
  • FIG. 12 is a schematic structural diagram of a first antenna according to an embodiment of the present application.
  • the first antenna 200 may include a first radiator 22 and a second radiator 23, the first radiator 22 and the second radiator 23 are arranged in the accommodating space A at intervals, and may be used as GNSS respectively L5 antenna and BT/WiFi antenna.
  • the electrical length of the first radiator 22 and the second radiator 23 is determined by the working frequency of the antenna, which can be respectively 1/4 of the wavelength corresponding to the working frequency of the GNSS L5 antenna and the BT/WiFi antenna. It should be noted that due to the influence of the material of the antenna support 21 and the loading of the peripheral components of the first antenna 200, the lengths of the first radiator 22 and the second radiator 23 may be less than 1/4 of their respective wavelengths.
  • the widths of the first radiator 22 and the second radiator 23 can be minimized as far as possible on the basis of ensuring the formability and consistency of processing, so as to increase the distance between the first antenna 200 and the metal middle frame 11 and the screen assembly 13 , reducing the influence of the metal middle frame 11 and the screen assembly 13 on the performance of the first antenna 200 .
  • the width of the first antenna 200 may be 0.6mm-0.8mm.
  • the first radiator 22 is connected to the main circuit board 15 through the first feed point 221
  • the second radiator 23 is connected to the main circuit board 15 through the second feed point 231
  • the first antenna 200 may be used as a monopole antenna without a ground point.
  • both the first radiator 22 and the second radiator 23 may have a ground point, and the distance between the ground point and the respective feed point may be 1.8mm-2.2mm, so as to form an IFA antenna.
  • the first feed point 221 is located at the 3:30 position of the wearable body 100, and the wiring of the first radiator 22 goes counterclockwise from the 5:30 position of the wearable body 100 to the 2:30 position; the second feed point 231 is located at the 2:30 position.
  • the wiring of the second radiator 23 goes clockwise from the seven o'clock position of the wearable body 100 to the nine o'clock position.
  • the length from the first feeding point 221 to the two-and-a-half position can play a tuning role.
  • FIG. 13 is a diagram S11 of a first radiator provided by an embodiment of the application
  • FIG. 14 is a diagram S11 of a second radiator provided by an embodiment of the application.
  • the abscissa represents the frequency, in GHz
  • the ordinate represents the return loss parameter, in dB.
  • the curves in FIGS. 13 and 14 represent the first radiator 22 and the second radiator 23 respectively. Return loss in each frequency band.
  • the first radiator 22 resonates well in the GNSS L5 frequency band (1176MHz)
  • the second radiator 23 resonates well in the BT/WiFi frequency band (2400MHz-2500MHz).
  • the wearable device by arranging the antenna in the accommodation space between the screen component and the metal middle frame, on the one hand, the space inside the wearable device can be reasonably used, and on the other hand, the wearable device can be realized On the other hand, the first antenna disposed in the accommodating space is far away from the user's arm and the device in the wearable body, which can reduce the absorption of the human body and the influence of the metal device on the performance of the antenna.
  • the metal middle frame 11 can also be used to feed and excite the main circuit The gap between the plate 15 and the metal middle frame 11 is used to realize the slot antenna.
  • FIG. 15 is a schematic structural diagram of a second antenna according to an embodiment of the present application.
  • the main circuit board 15 and the metal middle frame 11 can be connected through the third feed point 31 to realize power feeding, and the main circuit board 15 passes through the first feed point 31 .
  • the grounding point 32 and the second grounding point 33 are grounded, and the slot B is excited after feeding, so that a slot antenna can be realized.
  • the width b of the gap B between the metal middle frame 11 and the main circuit board 15 is specifically determined by the respective sizes of the metal middle frame 11 and the main circuit board 15. It can be understood that the width of the gap is much smaller than that of the slot antenna.
  • the wavelength corresponding to the resonant frequency may be any width for forming the slot antenna, which is not limited here.
  • the width of the slit may be 0.5mm-1.8mm.
  • the third feed point 31 may be set at the two o'clock position of the wearable body 100
  • the first ground point 32 may be set at the eleven o'clock position of the wearable body 100
  • the second ground point 33 may be set at the eleven o'clock position of the wearable body 100 It is set at the eight o'clock position of the wearing body 100 .
  • the resonance of ⁇ /2, ⁇ , 3 ⁇ /2...n ⁇ /2 can be generated, covering LB (698-960MHz), MB (1710-2170MHz), HB (2300MHz-2690MHz), and can be used as Cell (Cellular) Antennas (790MHz-960MHz, 1710MHz-2690MHz) and GNSS L1 (1575MHz) Antennas.
  • FIG. 16 is a S11 diagram of the second antenna provided by an embodiment of the application.
  • the dotted line in FIG. 16 represents the S11 diagram of the second ground point 33 in a short-circuit state, and 1, 2 and 3 are the resonant frequency points in this state,
  • the solid line represents the S11 diagram when the second ground point 33 is in an open state, and 4, 5, 6, and 7 are resonance frequencies in this state.
  • it is not difficult to see that the modes of ⁇ /2, ⁇ , 3 ⁇ /2, and 2 ⁇ can be excited under the short-circuit and open-circuit states of the second ground point 33 , and the second ground point 22 is short-circuited.
  • the resonant frequency points in the two states of open circuit and open circuit are shifted. Therefore, by loading different inductances or capacitances at the second ground point 33, the frequency can be tuned.
  • FIG. 17 is a schematic diagram of an electric field distribution of a second antenna according to an embodiment of the present application.
  • four lines E1, E2, E3, and E4 are drawn from the inside to the outside.
  • the black dots indicate that the electric field at this position is at a peak value, and the dotted line indicates that the electric field at this position is at a valley value.
  • four modes E1 , E2 , E3 and E4 of the antenna can be excited.
  • E1 has one electric field peak, corresponding to the ⁇ /2 mode of the antenna;
  • E2 has two electric field peaks, corresponding to the ⁇ mode of the antenna;
  • E3 has three electric field peaks, corresponding to the 3 ⁇ /2 mode of the antenna;
  • E4 has four electric fields Peak, corresponding to the 2 ⁇ mode of the antenna.
  • the positions of the first grounding point 32 and the second grounding point 33 on the second antenna 300 can be adjusted, Thereby adjusting the size of the slot antenna.
  • an inductor, a capacitor, a filter circuit or an antenna switch can be grounded to add/unload the resonant strong electric field area or strong current area, and the resonant frequency ratio can be adjusted to expand the coverage frequency band of the second antenna 300 .
  • FIG. 18 is a corresponding S11 diagram of the second antenna provided by an embodiment of the present application when the switch switches between different states.
  • the S11 diagram provided in FIG. 18 shows that at the second ground point 33 of the second antenna 300, that is, the eight o'clock position of the wearable body 100, the antenna switch is connected to adjust the capacitance to have different sizes, thereby obtaining the Return loss curve.
  • the dashed-dotted line represents the corresponding S11 diagram when the capacitance connected to the second ground point 33 is 1.5pF
  • 5 and 6 are the resonant frequency points in this state
  • the solid line represents the connection to the second ground point 33.
  • FIG. 19 is another schematic structural diagram of a second antenna provided by an embodiment of the present application.
  • a third grounding point 34 may also be provided on the second antenna 300 , for example, the third grounding point 34 may be located at the five o’clock position of the wearable body 100 Nearby, a larger inductance (eg, above 15 nH) can be added at the third ground point 34 to perform frequency tuning on the low frequency band of the second antenna 300 .
  • a capacitor or a filter circuit may also be provided at the third ground point 34 .
  • the feeding and grounding of the second antenna 300 may be implemented by means of screws, antenna shrapnel, steel sheets, and the like. Understandably, the main circuit board 15 can be fixed on the metal middle frame 11 by fasteners such as screws, so as to ensure the reliability of the main circuit board 15 being fixed in the wearable body 100 . At the same time, the screw can be used to realize the feeding and grounding of the second antenna 300, which is beneficial to reduce the number of parts and improve the overall space utilization of the wearable device.
  • the gap between the main circuit board 15 and the metal middle frame 11 is used to design a slot antenna, and there is no need to design a slot antenna.
  • the slits on the metal middle frame 11 and the bottom shell are beneficial to improve the aesthetics of the wearable body 100 and give users a better visual experience.
  • FIG. 20 is a schematic structural diagram of the coexistence of a first antenna and a second antenna according to an embodiment of the present application.
  • the first antenna 200 includes a first radiator 22 and a second radiator 23 formed on the antenna bracket 21 , and the wiring of the first radiator 22 runs counterclockwise from the five-thirty position of the wearable body 100 At 2:30, the first feed point 221 connecting the first radiator 22 and the main circuit board 15 is located at 3:30 of the wearable body 100, and the wiring of the second radiator 23 runs from the 7:00 position of the wearable body 100.
  • the hour hand moves to the nine o'clock position, and the second feed point 231 connecting the second radiator 23 and the main circuit board 15 is located at the seven o'clock position of the wearable body 100 .
  • the second antenna 300 is a slot antenna formed between the main circuit board 15 and the metal middle frame 11 , and the third feed point 31 connecting the main circuit board 15 and the metal middle frame 11 can be set at the two o'clock position of the wearable body 100 , the first ground point 32 connecting the main circuit board 15 and the metal middle frame 11 can be set at the eleven o'clock position of the wearable body 100, and the second ground point 33 connecting the main circuit board 15 and the metal middle frame 11 It can be set at the eight o'clock position of the wearing body 100 .
  • the second antenna 300 is a slot antenna.
  • the slot in the wearable body 100 is continuous and has a long length, and the slot antenna is not easily interfered by the metal middle frame 11 , which is suitable for designing a low-frequency antenna.
  • the second antenna 300 designed in the embodiment of the present application used as Cell antenna (790MHz-960MHz, 1710MHz-2690MHz) and GNSS L1 (1575MHz) antenna.
  • buttons are provided at the two o’clock position and the four o’clock position of the wearable main body 100 .
  • the six o’clock and twelve o’clock positions of the wearing main body 100 are provided with buttons.
  • the first outlet 1351 and the second outlet 1352 are provided with a first bend 1353 and a second bend 1354 at the nine o'clock position of the wearable body 100. At these positions, the internal layout of the wearable body 100 is compact, and there may be influences on feed points and Metal parts that are grounded.
  • the positions of the first feeding point 221, the second feeding point 231, the third feeding point 31, the first grounding point 32, and the second grounding point 33 can avoid the above-mentioned compact layout, and are close to the six o'clock position and ten o'clock position. Set it at the 2 o'clock position to be as close as possible to the outer edge of the arm to reduce the influence of the arm on the radiation performance of the antenna.
  • the first feed point 221 and the second feed point 231 of the first antenna 200 and the third feed point 31 , the first ground point 32 and the second ground point 33 of the second antenna 300 are respectively set at a certain distance, which can avoid The first antenna 200 and the second antenna 300 influence each other.
  • the coexistence design of the first antenna 200 and the second antenna 300 can solve the problems of bandwidth realization and communication system splitting of the antenna, can better reduce the insertion loss of the radio frequency channel, and improve the performance of the antenna.
  • the first antenna is arranged in the accommodation space between the screen assembly and the metal middle frame, and the second antenna is formed by using the gap between the main circuit board and the metal middle frame, which can effectively reduce the metal wear of the main body.
  • the effect of the enclosure and internal electronics, the absorption of the human body on the performance of the antenna is arranged in the wearable body of the wearable device.
  • the terms “installed”, “connected” and “connected” should be understood in a broad sense, for example, it may be a fixed connection or an intermediate medium.
  • the indirect connection can be the internal communication of two elements or the interaction relationship between the two elements.

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Abstract

一种可穿戴设备，包括穿戴主体（100），穿戴主体（100）包括：盖板（12）、屏幕组件（13）、天线支架（21）、第一天线（200）、金属中框（11）、电路板（15）和底壳（14）；盖板（12）和底壳（14）分别连接在金属中框（11）的两侧，屏幕组件（13）连接在盖板（12）朝向底壳（14）的一侧，电路板（15）位于金属中框（11）、屏幕组件（13）和底壳（14）围设成的空间内；屏幕组件（13）的端部、金属中框（11）的内壁、盖板（12）的内壁共同围设成容置空间（A），天线支架（21）设置在容置空间（A）内，第一天线（200）设置在天线支架（21）上并通过馈点和电路板（15）连接。该可穿戴设备可以合理利用穿戴主体（100）内部的空间实现天线的设计。

Description

可穿戴设备
本申请要求于2020年06月30日提交中国专利局、申请号为202010617434.1、申请名称为“可穿戴设备”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及智能穿戴技术领域，尤其涉及一种可穿戴设备。
背景技术
可穿戴设备由于其便携性和智能性而越来越受到用户的欢迎，智能手表是最常用的可穿戴设备之一，其集成了通信功能，需要设置天线来发射或接收电磁信号。智能手表的体积非常小，而天线的数量和种类需求越来越多，因此合理利用智能手表的空间来实现天线的设计，难度非常高。
发明内容
本申请实施例提供一种可穿戴设备，可以合理利用穿戴主体内部的空间来实现天线的设计。
第一方面，本申请实施例提供一种可穿戴设备，包括穿戴主体，所述穿戴主体包括：盖板、屏幕组件、天线支架、第一天线、金属中框、电路板和底壳；所述盖板和所述底壳分别连接在所述金属中框的两侧，所述屏幕组件连接在所述盖板朝向所述底壳的一侧，所述电路板位于所述金属中框、所述屏幕组件和所述底壳围设成的空间内；所述屏幕组件的端部、所述金属中框的内壁、所述盖板的内壁共同围设成容置空间，所述天线支架设置在所述容置空间内，所述第一天线设置在所述天线支架上并通过馈点和所述电路板连接。
本申请实施例提供的可穿戴设备，通过在屏幕组件和金属中框之间的容置空间内设置天线，一方面，可以合理利用可穿戴设备内部的空间，另一方面，可以实现可穿戴设备内的多天线设计，再一方面，设置在容置空间内的第一天线远离用户手臂和穿戴主体内的器件，可以降低人体吸收和金属器件对天线性能的影响。
在一种可能的实施方式中，所述天线支架固定在所述金属中框和/或所述盖板上。
天线支架可以固定在金属中框或者盖板上，保证其位于容置空间内，且稳固连接即可。
在一种可能的实施方式中，所述天线支架包括支架主体和走线部，所述支架主体设置为环形，所述走线部凸出设置在所述支架主体的部分长度上，金属走线设置在所述走线部上以形成所述第一天线。
环形的支架主体便于组装和拆卸，金属走线通过激光直接成型技术设置在走线部上，便于加工。
在一种可能的实施方式中，所述走线部在所述穿戴主体的厚度方向上的高度不低于所述金属中框的高度。
走线部平齐于或者高于金属中框的上边缘，从而可以减轻金属中框对走线部上的金属天线的影响。且走线部尽量远离电路板且靠近盖板，可以尽可能减少穿戴主体内部的屏幕组件和电路板等金属器件对第一天线的影响。同时，该穿戴主体佩戴在用户的手臂上时，第一天线远离手臂，受人体吸收小，手模降幅小。
在一种可能的实施方式中，所述天线支架还包括延伸部，所述支架主体向着靠近所述金属中框的方向延伸形成所述延伸部，所述金属中框的内壁上设置有限位凸台，所述延伸部粘设在所述盖板和所述限位凸台的上表面之间。
天线支架通过延伸部粘设在盖板和限位凸台之间，一方面可以实现可靠地固定，另一方面，可以实现防水。
在一种可能的实施方式中，所述第一天线包括第一辐射体和/或第二辐射体，所述第一辐射体为GNSS天线，所述第一辐射体上设置有第一馈点，所述第二辐射体为BT/WIFI天线，所述第二辐射体上设置有第二馈点。
设置在天线支架上的第一天线，受到周边器件的影响，长度较短，且受到金属器件的影响低，适合设计高频段的天线。
在一种可能的实施方式中，所述第一天线为镀覆在所述天线支架上的金属走线；或者，所述第一天线为嵌入在所述天线支架上的金属件；或者，所述第一天线为贴设在所述天线支架上的柔性电路板。
设置在天线支架上的第一天线的实现方式有多种，金属走线、金属嵌件和柔性电路板均可以作为第一天线。
在一种可能的实施方式中，所述第一天线通过弹片、螺丝或金属片进行馈电。
利用弹片、螺丝或金属片等导电件，连接第一天线和主电路板，可以顺利实现馈电。并且，主电路板可以通过螺丝等紧固件固定在金属中框上，以保证主电路板在穿戴主体内固定的可靠性，此时，可以利用该螺丝实现天线的馈电和接地，有利于减少零部件数量，提高可穿戴设备整体的空间利用率。
在一种可能的实施方式中，所述第一天线的宽度为0.6mm-0.8mm。
第一天线的宽度可以保证加工可成型、一致性，同时使第一天线和金属中框、屏幕组件之间具有较大的距离，可以降低金属中框和屏幕组件对第一天线的性能的影响。
在一种可能的实施方式中，所述电路板和所述金属中框之间具有缝隙，所述电路板通过第三馈点和第一接地点、第二接地点与所述金属中框分别连接，所述电路板、所述金属中框以及所述电路板和所述金属中框之间的缝隙形成第二天线。
利用主电路板和金属中框之间的缝隙，设计缝隙天线，无需在金属中框和底壳上开缝，有利于提高穿戴主体的美观性，给用户更好的视觉体验，同时，有利于穿戴主体壳体的加工和组装，利于整机的防水设计。并且，第一天线和第二天线的共存设计，可以解决天线的带宽实现、通信制式拆分问题，可以更好的减小射频通路插损，提升天线性能。
在一种可能的实施方式中，所述第二天线为Cell天线和/或GNSS天线。
第二天线可以产生nλ/2的谐振，覆盖低频、中频和高频，且第二天线受到金属中框及穿戴主体内的金属器件的影响较小，适合作为低频天线。
在一种可能的实施方式中，所述金属中框通过用于调谐的电感或电容接地。
通过连接电感或电容，加/去载谐振强电场区或强电流区，可调整谐振频率比，拓展第 二天线的覆盖频段。
在一种可能的实施方式中，所述电路板和所述金属中框之间还设置有第三接地点，所述第三接地点位于所述第三馈点和所述第二接地点之间。
设置第三接地点，并通过在第三接地点处连接电感或电容，可调整谐振频率比，拓展第二天线的覆盖频段。
在一种可能的实施方式中，所述缝隙的宽度为0.5mm-1.8mm。
缝隙的宽度远小于缝隙天线的谐振频率对应的波长，受限于穿戴主体内的器件布置，缝隙的宽度较小，可以满足缝隙天线的形成条件。
第二方面，本申请实施例提供一种可穿戴设备，包括穿戴主体，所述穿戴主体包括：显示屏、第二天线、金属中框、电路板和底壳；所述显示屏和所述底壳分别连接在所述金属中框的两侧，所述电路板位于所述金属中框、所述显示屏和所述底壳围设成的空间内；所述电路板和所述金属中框之间具有缝隙，所述电路板通过第三馈点和第一接地点、第二接地点与所述金属中框分别连接，所述电路板、所述金属中框以及所述电路板和所述金属中框之间的缝隙形成第二天线。
利用主电路板和金属中框之间的缝隙，设计缝隙天线，无需在金属中框和底壳上开缝，有利于提高穿戴主体的美观性，给用户更好的视觉体验，同时，有利于穿戴主体壳体的加工和组装，利于整机的防水设计。
在一种可能的实施方式中，所述第二天线为Cell天线和/或GNSS天线。
在一种可能的实施方式中，所述电路板和所述金属中框之间还设置有第三接地点，所述第三接地点位于所述第三馈点和所述第二接地点之间。
在一种可能的实施方式中，所述金属中框通过用于调谐的电感或电容接地。
在一种可能的实施方式中，所述缝隙的宽度为0.5mm-1.8mm。
在一种可能的实施方式中，所述第二天线通过弹片、螺丝或金属片进行馈电。
附图说明
图1为本申请一实施例提供的可穿戴设备的结构示意图；
图2为本申请一实施例提供的显示屏的膜层结构示意图；
图3为本申请一实施例提供的可穿戴设备内的屏幕组件的结构示意图；
图4为本申请一实施例提供的屏幕组件和主电路板连接的结构示意图；
图5为本申请一实施例提供的屏幕组件和金属中框的俯视图；
图6为本申请一实施例提供的在容置空间内设置天线的结构示意图；
图7为本申请一实施例提供的可穿戴设备的穿戴主体的部分器件的爆炸结构示意图；
图8为本申请一实施例提供的支架的结构示意图；
图9为本申请一实施例提供的可穿戴设备的剖面结构示意图；
图10为本申请一实施例提供的可穿戴设备的另一种剖面结构示意图；
图11为本申请一实施例提供的可穿戴设备的第一天线和电路板连接的结构示意图；
图12为本申请一实施例提供的第一天线的结构示意图；
图13为本申请一实施例提供的第一辐射体的S11图；
图14为本申请一实施例提供的第二辐射体的S11图；
图15为本申请一实施例提供的第二天线的结构示意图；
图16为本申请一实施例提供的第二天线的S11图；
图17为本申请一实施例提供的第二天线的电场分布示意图；
图18为本申请一实施例提供的第二天线在开关切换不同状态时对应的S11图；
图19为本申请一实施例提供的第二天线的又一种结构示意图；
图20为本申请一实施例提供的第一天线和第二天线共存的结构示意图。
附图标记说明：
100-穿戴主体；11-金属中框；111-限位台阶；12-盖板；13-屏幕组件；131-偏光板；132-触控层；133-显示面板；134-基板；135-柔性电路板；1351-第一出线；1352-第二出线；1353-第一折弯；1354-第二折弯；136-光学胶；14-底壳；15-主电路板；151-接线部；16-电池；
200-第一天线；21-天线支架；210-支架主体；211-延伸部；212-走线部；213-导电过孔；214-弹片；22-第一辐射体；221-第一馈点；23-第二辐射体；231-第二馈点；
300-第二天线；31-第三馈点；32-第一接地点；33-第二接地点；
400-表带连接组件；51-第一按键；52-第二按键。
具体实施方式
需要说明的是，本申请实施例中，可穿戴设备可以为智能手表、智能手环等电子设备，以手表为例，其正面为显示面，背面为手表接近用户手臂的一面。本申请实施例各附图中，Z轴的正方向为手表在其厚度方向上自背面至正面的方向，X轴的正方向为手表自九点钟位置至三点钟位置的方向，Y轴的正方向为手表自六点钟位置至十二点钟位置的方向。
图1为本申请一实施例提供的可穿戴设备的结构示意图。参考图1所示，本申请实施例中提供的可穿戴设备可以包括穿戴主体100和表带(图中未示出)，穿戴主体100和表带通过表带连接组件400可拆卸连接，方便拆卸维修和更换表带，或者，穿戴主体100也可以和表带一体化设置。
其中，穿戴主体100包括壳体和设置在壳体正面且起到显示作用的显示屏。壳体包括金属中框11和底壳，金属中框11为环形中框，底壳连接在金属中框11的背面，显示屏连接在金属中框11的正面，底壳、金属中框11和显示屏共同围设成用来收容主电路板、电池等器件的内部空间。
金属中框11具有结构强度高，美观性高，以及可以作为天线的优点。金属中框11的形状不做具体限制，本申请实施例中，以金属中框11为圆形作为示例，金属中框11的外径尺寸可以处于38mm-48mm之间，例如可以为42mm或46mm。不难理解地，金属中框11也可以为椭圆形、矩形或多边形。
表带连接组件400连接在金属中框11上，可以和金属中框11一体成型，金属中框11的侧壁上还可以开设安装孔，以用来安装按键，示例性地，金属中框11的侧壁上连接有第一按键51和第二按键52，分别作为电源键和功能键。第一按键51和第二按键52可以分别设置在穿戴主体100的两点钟位置附近和四点钟位置附近，符合大多数用户的用手习惯，方便用户操作。
显示屏包括屏幕组件和覆盖在屏幕组件表面上的盖板12，盖板12起到保护屏幕组件的作用。示例性地，显示屏可以为液晶显示屏、发光二极管显示屏、有机发光二极管显示 屏、微机电系统显示屏或电子纸显示屏。显示屏可以用来向用户显示各种内容，例如，文本、图像、视频、图标、符号等。显示屏可以包括触摸屏，用来接收电子笔或用户手部的触摸输入、手势输入、接近输入或者悬停输入等。
图2为本申请一实施例提供的显示屏的膜层结构示意图。参考图2所示，显示屏包括盖板12和屏幕组件13，盖板12通过光学胶粘接在屏幕组件13的上方，屏幕组件13包括层叠设置在基板134上方的显示面板133、触控层132和偏光板131，相邻的两层结构之间可以通过光学胶136连接。
其中，显示面板133可以为有机发光二极管(Organic Light-Emitting Diode，OLED)，触控层132可以和显示面板133分离设置，或者，触控层132和显示面板133可以一体化设置。
屏幕组件13还包括柔性电路板(Flexible Printed Circuit，FPC)135，触控层132和显示面板133均需要通过柔性电路板135和穿戴主体100内部的主电路板电连接。示例性地，对于触控层132和显示面板133分离设置的情况，触控层132和显示面板133可以分别通过柔性电路板135和主电路板连接，柔性电路板135是以聚酰亚胺或者聚酰薄膜为基材制成的一种具有高度可靠性的挠性电路板，其弯折性良好，在和触控层132和显示面板133连接后，可以弯折至基板134的下方，再和屏幕组件13下方的主电路板连接。
图3为本申请一实施例提供的可穿戴设备内的屏幕组件的结构示意图，图4为本申请一实施例提供的屏幕组件和主电路板连接的结构示意图。参考图3和图4所示，柔性电路板135包括第一出线1351和第二出线1352，自触控层132引出的第一出线1351，伸出触控层132的边缘后向屏幕组件13的背部方向折弯，在屏幕组件13的背部延伸至屏幕组件13的边缘并向着靠近主电路板15的方向弯折，形成第一折弯1353以与屏幕组件13下方的主电路板15上的接线部151连接。自显示面板133引出的第二出线1352，伸出显示面板133的边缘后向屏幕组件13的背部方向折弯，在屏幕组件13的背部延伸至屏幕组件13的边缘并向着靠近主电路板15的方向弯折，形成第二折弯1354以与屏幕组件13下方的主电路板15上的接线部151连接。其中，第一出线1351和第二出线1352自屏幕组件13的边缘引出后，向屏幕组件13的背部方向折弯，可以减少柔性电路板135占用的体积。
对于触控层132和显示面板133分离设置的情况，第一出线1351和第二出线1352的排线具有较宽的尺寸，例如第一出线1351的排线宽度可以为5mm-7mm，第二出线1352的排线宽度可以为6mm-8mm，且第一出线1351和第二出线1352伸出屏幕组件13边缘的长度为1.1mm-1.3mm。第一出线1351和第二出线1352可以远离对方设置，以尽量降低相互之间的干扰，且方便整机堆叠，示例性地，第一出线1351和第二出线1352可以分别设置在屏幕组件13的十二点钟位置附近和六点钟位置附近，第一折弯1353和第二折弯1354可以并排设置，例如设置在屏幕组件13的九点钟位置附近，以降低柔性电路板135的排布难度。
在另一种可能的实施方式中，例如对于触控层132和显示面板133一体化设置的情况，第一出线1351和第二出线1352可以放置在一起，例如均设置在屏幕组件13的六点钟位置附近，从而使得屏幕组件13的出线占据的面积更小。
图5为本申请一实施例提供的屏幕组件和金属中框的俯视图。结合图3-图5不难看出，第一出线1351、第二出线1352、第一折弯1353和第二折弯1354，分别连接在屏幕组件 13的主体边缘并向外伸出一定的长度，屏幕组件13收容在金属中框11内部，屏幕组件13的端部和金属中框11的内壁面之间具有容置空间A(如图中填充部分)，用来收容第一出线1351、第二出线1352、第一折弯1353和第二折弯1354。需要说明的是，屏幕组件13整体呈接近圆形的板状结构，上述“屏幕组件13的端部”指的是屏幕组件13周圈的侧壁面。
容置空间A整体呈环形，除了第一出线1351、第二出线1352、第一折弯1353和第二折弯1354占据的空间，其它空间如果无器件排布，则会导致穿戴主体100整体的空间利用率不够高，内部器件排布不够紧凑。容置空间A体积较小，且距离屏幕组件13的端部距离较近，布局电子元器件的难度较高。然而，考虑到容置空间A位于屏幕组件13的周围，远离用户手臂及穿戴主体100内的电池等电子器件，本申请实施例中，考虑在容置空间A内设置天线，天线所需体积较小，同时，容置空间A的位置可以较大程度上避免天线受到人体吸收和器件干扰的问题。
以下参考附图对本申请实施例提供的在容置空间A内设置天线的实现方式做具体的说明。
图6为本申请一实施例提供的在容置空间内设置天线的结构示意图。参考图6所示，本申请实施例中，容置空间A内可以设置第一天线200，第一天线200的数量为一个或多个，占据容置空间A的部分体积，且与第一出线1351、第二出线1352、第一折弯1353和第二折弯1354不发生干涉。第一天线200可以为电长度为λ/4的电天线，作为GNSS(Global Navigation Satellite System，卫星导航系统)天线(L1波段或L5波段)、BT(bluetooth，蓝牙)天线、或WiFi(Wireless Fidelity，无线保真)天线等。
第一天线200的实现方式可以为，增设单独的天线支架，以天线支架作为载体，在天线支架上镀金属走线作为天线，也可以将金属嵌件嵌入在支撑件中，使金属嵌件作为天线，或者利用柔性电路板贴在支架上作为天线。其中，天线支架为绝缘件，例如可以为塑料。
图7为本申请一实施例提供的可穿戴设备的穿戴主体的部分器件的爆炸结构示意图，图8为本申请一实施例提供的支架的结构示意图，图9为本申请一实施例提供的可穿戴设备的剖面结构示意图。参考图7-图9所示，本申请实施例提供的可穿戴设备的穿戴主体100，包括自上而下依次设置的盖板12、屏幕组件13、电路板15、电池16和底壳14。屏幕组件13的端部、金属中框11的内壁和盖板12的内壁之间形成的容置空间A内设置有天线支架21，第一天线200设置在天线支架21上。
其中，盖板12的尺寸大于屏幕组件13的尺寸，盖板12的边缘和金属中框11采用粘接、卡接等方式连接，此时，容置空间A(图中虚线圈出部分)由盖板12边缘区域的内内壁、金属中框11的内壁、屏幕组件13的端部围设形成。在一种可能的实施方式中，盖板12可以设置为2.5D玻璃或者3D玻璃，以使穿戴主体100的外观美观性更高，用户触摸手感更加顺滑。此时，盖板12的边缘区域向下弯折，容置空间A(图中虚线圈出部分)由盖板12弯折区域的内壁、金属中框11的内壁、屏幕组件13的端部围设形成。
天线支架21可以包括支架主体210，支架主体210为天线支架21的主要结构件，用来保证天线支架21的结构强度。支架主体210被收容在容置空间A内，支架主体210可以设置为环形，占据环形的容置空间A的全部长度，或者，支架主体210也可以设置为弧形，仅占据容置空间A的部分长度。其中，支架主体210设置为环形时，天线支架21整 体的结构更加稳定，且便于组装和拆卸。
天线支架21设置在容置空间A内，其具体固定方式在本实施例中不做具体限制，天线支架21可以通过粘接、卡接、螺接等方式连接在金属中框11上，也可以通过粘接等方式连接在盖板12的内壁上，或者同时固定在天线支架21和金属中框11上。在一种可能的实施方式中，金属中框11的内壁上凸出设置有限位台阶111，天线支架21上具有延伸部211，延伸部211由支架主体21向着靠近金属中框11的方向延伸形成，延伸部211可以夹设在盖板12和限位台阶111之间，并通过粘胶连接，以在固定天线支架21的同时，密封盖板12、天线支架21和金属中框11之间的缝隙，防止液体进入穿戴主体100的内部，以满足可穿戴设备的防水要求。盖板12为2.5D玻璃或3D玻璃时，盖板12的边缘区域向下弯折，延伸部211可以夹设在盖板12的端面和限位台阶11之间。
在一种可能的实施方式中，第一天线200的实现方式可以为，在成型的塑料材料的天线支架21上，通过计算机按照导电图形的轨迹控制激光的运动，直接在天线支架21上镭射形成金属天线，即激光直接成型技术(Laser Direct Structuring，LDS)。
天线支架21上还设置有走线部212，走线部212上用于覆盖金属走线以形成第一天线200，走线部212的尺寸、形状和位置均可以对第一天线200的性能造成影响。在一种可能的实施方式中，走线部212可以为支架主体210上的一部分，即支架主体210的一定位置上的具有一定长度和宽度的区域，可以作为走线部212。在另一种可能的实施方式中，参考图8所示，支架主体210上凸出设置的条形凸台也可以构成走线部212，该条形凸台适应于盖板12的内壁面的形状，且该条形凸台的尺寸、位置和形状与待成型的第一天线200相匹配，有利于降低金属走线成型的工艺上的难度。
图10为本申请一实施例提供的可穿戴设备的另一种剖面结构示意图。参考图10所示，本申请实施例中，可以设置走线部212平齐于或者高于金属中框11的上边缘，即a2平齐或者高于a1，从而可以减轻金属中框11对走线部212上的金属天线的影响。
在一种可能的实施方式中，走线部212可以位于天线支架21的远离电路板15的一侧。一方面，屏幕组件13中的触控层132、显示面板133和柔性电路板135，以及电路板15上，均具有金属，可能会对第一天线200的性能产生影响，因此设置走线部212尽量远离电路板15且靠近盖板12，可以尽可能减少穿戴主体100内部的屏幕组件13和电路板15等金属器件对第一天线200的影响。同时，该穿戴主体100佩戴在用户的手臂上时，第一天线200远离手臂，受人体吸收小，手模降幅小。
第一天线200和电路板15电连接以实现馈电，图11为本申请一实施例提供的可穿戴设备的第一天线和电路板连接的结构示意图。参考图11所示，第一天线200为覆盖在天线支架21的走线部212上的金属走线(图中走线部212上填充的阴影表示金属走线)，并通过天线支架21上开设的导电过孔213以及弹片214实现和电路板15的电连接。可以理解的是，第一天线200的馈电还可以通过螺丝、钢片等导电件实现。
此外，天线支架21上还设置有避让结构(图中未示出)，例如在六点钟位置、九点钟位置和十二钟位置，设置避让结构可以避让屏幕组件13边缘的柔性电路板135的出线。天线支架21上还可以设置加强筋等结构(图中未示出)，以增强天线支架21的强度，有效防止天线支架21受力变形导致第一天线200的性能受到影响。
以下参考具体的实施例和附图来描述本申请实施例提供的第一天线200的具体结构。
图12为本申请一实施例提供的第一天线的结构示意图。参考图12所示，第一天线200可以包括第一辐射体22和第二辐射体23，第一辐射体22和第二辐射体23间隔设置在容置空间A内，可以分别用来作为GNSS L5天线和BT/WiFi天线。
其中，第一辐射体22和第二辐射体23的电长度由天线的工作频率确定，可以分别为GNSS L5天线和BT/WiFi天线的工作频率对应的波长的1/4。需要说明的是，受到天线支架21的材料和第一天线200周边器件的加载影响，第一辐射体22和第二辐射体23的长度可能会小于各自对应波长的1/4。第一辐射体22和第二辐射体23的宽度可以在保证加工可成型、一致性的基础上，尽量取最小值，以增加第一天线200和金属中框11、屏幕组件13之间的距离，降低金属中框11和屏幕组件13对第一天线200的性能的影响。在一种可能的实施方式中，第一天线200的宽度可以为0.6mm-0.8mm。
本申请实施例中，第一辐射体22通过第一馈点221和主电路板15连接，第二辐射体23通过第二馈点231和主电路板15连接。第一天线200可以不设置接地点，作为单极子天线。在另一种可能的实施方式中，第一辐射体22和第二辐射体23均可以具有接地点，接地点距离各自的馈点的距离可以为1.8mm-2.2mm，以形成IFA天线。
示例性地，第一馈点221位于穿戴主体100的三点半位置，第一辐射体22的走线从穿戴主体100的五点半位置逆时针走向两点半位置；第二馈点231位于穿戴主体100的七点钟位置，第二辐射体23的走线从穿戴主体100的七点钟位置顺时针走向九点钟位置。对于第一辐射体22，自第一馈点221馈电后，自第一馈点221至两点半位置这一段长度，可以起到调谐作用。
图13为本申请一实施例提供的第一辐射体的S11图，图14为本申请一实施例提供的第二辐射体的S11图。图13和图14中，横坐标表示频率，单位为GHz，纵坐标为回波损耗参数，单位为dB，图13和图14中的曲线分别代表了第一辐射体22和第二辐射体23在各个频段的回波损耗。如图13和图14所示，第一辐射体22在GNSS L5频段(1176MHz)谐振良好，第二辐射体23在BT/WiFi频段(2400MHz-2500MHz)谐振良好。
本申请实施例提供的可穿戴设备，通过在屏幕组件和金属中框之间的容置空间内设置天线，一方面，可以合理利用可穿戴设备内部的空间，另一方面，可以实现可穿戴设备内的多天线设计，再一方面，设置在容置空间内的第一天线远离用户手臂和穿戴主体内的器件，可以降低人体吸收和金属器件对天线性能的影响。
随着可穿戴设备的功能的扩展，可穿戴设备需要满足更多种通信制式，若在可穿戴设备内仅设置一种天线，则会出现天线拆分困难，天线带宽、射频天线通路器件插损等问题。为了解决该问题，本申请实施例中，除了上述在屏幕组件13和金属中框11之间的容置空间内设置第一天线200的方式，还可以利用金属中框11，馈电激发主电路板15和金属中框11之间的缝隙，以实现缝隙天线。
以下参考具体的附图来描述本申请实施例提供的缝隙天线。
图15为本申请一实施例提供的第二天线的结构示意图。参考图15所示，主电路板15和金属中框11之间具有缝隙B，通过第三馈点31连接主电路板15和金属中框11可以实现馈电，且主电路板15通过第一接地点32和第二接地点33接地，缝隙B馈电后被激发，从而可以实现缝隙天线。
其中，金属中框11和主电路板15之间的缝隙B的宽度b，由金属中框11和主电路板 15各自的尺寸具体确定，可以理解的是，该缝隙的宽度远小于缝隙天线的谐振频率对应的波长，可以为形成缝隙天线的任意宽度，此处不做限定。例如，该缝隙的宽度可以为0.5mm-1.8mm。
在一种可能的实施方式中，第三馈点31可以设置在穿戴主体100的两点钟位置，第一接地点32可以设置在穿戴主体100的十一点钟位置，第二接地点33可以设置在穿戴主体100的八点钟位置。利用缝隙天线理论，可产生λ/2，λ，3λ/2…nλ/2的谐振，覆盖LB(698-960MHz)、MB(1710-2170MHz)、HB(2300MHz-2690MHz)，可以用来作为Cell(蜂窝)天线(790MHz-960MHz、1710MHz-2690MHz)和GNSS L1(1575MHz)天线。
图16为本申请一实施例提供的第二天线的S11图，图16中的虚线表示第二接地点33在短路状态下的S11图，1、2和3为该状态下的谐振频点，实线表示第二接地点33在开路状态下的S11图，4、5、6、7为该状态下的谐振频点。参考图16所示，不难看出，第二接地点33短路和开路这两种状态下，均可以激励出λ/2，λ，3λ/2、2λ的模态，并且第二接地点22短路和开路这两种状态下的谐振频点有偏移。因此，通过在第二接地点33处加载不同的电感或者电容，可以进行频率的调谐。
图17为本申请一实施例提供的第二天线的电场分布示意图。图17中，自内而外绘制有四条线E1、E2、E3、E4，黑色圆点表示该位置电场处于峰值，虚线表示该位置电场处于谷值。参考图17所示，在第三馈点31馈电，第一接地点32和第二接地点33接地的情况下，可激励出天线的四种模态E1、E2、E3和E4。E1具有一个电场峰值，对应天线的λ/2模态；E2具有两个电场峰值，对应天线的λ模态；E3具有三个电场峰值，对应天线的3λ/2模态；E4具有四个电场峰值，对应天线的2λ模态。
对于第二天线300，因外形尺寸的调整或屏幕等周边器件的环境加载，造成谐振频率偏低时，可以通过调整第二天线300上的第一接地点32和第二接地点33的位置，从而调整缝隙天线的尺寸。或者，可通过电感、电容、滤波电路或是天线开关接地，加/去载谐振强电场区或强电流区，可调整谐振频率比，拓展第二天线300的覆盖频段。
图18为本申请一实施例提供的第二天线在开关切换不同状态时对应的S11图。图18中提供的S11图表示，在第二天线300的第二接地点33处，即穿戴主体100的八点钟位置，接入天线开关，来调节电容具有不同大小，从而得到不同状态下的回波损耗曲线。图18中，点划线表示第二接地点33处接入的电容大小为1.5pF时对应的S11图，5、6为该状态下的谐振频点，实线表示第二接地点33处接入的电容大小为4.7pF时对应的S11图，3、4为该状态下的谐振频点，虚线表示第二接地点33处接入的电容为39pF时对应的S11图，1、2、7、8为该状态下的谐振频点。参考图18所示，通过在第二接地点33处加载不同的电容，可以实现0.79-0.96GHz，1.575-2.69GHz的全频段覆盖。
图19为本申请一实施例提供的第二天线的又一种结构示意图。参考图19所示，在另一种可能的实施方式中，还可以在第二天线300上设置第三接地点34，示例性地，第三接地点34可以位于穿戴主体100的五点钟位置附近，在第三接地点34处可以增加较大的电感(例如15nH以上)，以对第二天线300的低频段进行频率调谐。或者，第三接地点34处也可以设置电容或滤波电路。
其中，第二天线300的馈电和接地，可以通过螺丝、天线弹片、钢片等方式实现。可以理解地，主电路板15可以通过螺丝等紧固件固定在金属中框11上，以保证主电路板15 在穿戴主体100内固定的可靠性。同时，可以利用该螺丝实现第二天线300的馈电和接地，有利于减少零部件数量，提高可穿戴设备整体的空间利用率。
相比于现有技术中在金属中框11或者金属底壳上开缝形成天线的技术，本申请实施例中利用主电路板15和金属中框11之间的缝隙，设计缝隙天线，无需在金属中框11和底壳上开缝，有利于提高穿戴主体100的美观性，给用户更好的视觉体验，同时，有利于穿戴主体100壳体的加工和组装，利于整机的防水设计。
图20为本申请一实施例提供的第一天线和第二天线共存的结构示意图。参考图20所示，第一天线200包括形成在天线支架21上的第一辐射体22和第二辐射体23，第一辐射体22的走线从穿戴主体100的五点半位置逆时针走向两点半位置，连接第一辐射体22和主电路板15的第一馈点221位于穿戴主体100的三点半位置，第二辐射体23的走线从穿戴主体100的七点钟位置顺时针走向九点钟位置，连接第二辐射体23和主电路板15的第二馈点231位于穿戴主体100的七点钟位置。第二天线300为主电路板15和金属中框11之间形成的缝隙天线，连接主电路板15和金属中框11之间的第三馈点31可以设置在穿戴主体100的两点钟位置，连接主电路板15和金属中框11之间的第一接地点32可以设置在穿戴主体100的十一点钟位置，连接主电路板15和金属中框11之间的第二接地点33可以设置在穿戴主体100的八点钟位置。
考虑到设置在天线支架21上的第一天线200，受到周边器件的影响，长度较短，适合设计高频段的天线，本申请实施例中设计两段第一天线200，分别作为GNSS L5天线和BT/WiFi天线。第二天线300为缝隙天线，穿戴主体100内的缝隙连续，长度较长，且缝隙天线不容易受到金属中框11的干扰，适合设计低频段天线，本申请实施例中设计的第二天线300，用来作为Cell天线(790MHz-960MHz、1710MHz-2690MHz)和GNSS L1(1575MHz)天线。
此外，参考图1可知，穿戴主体100的两点钟位置和四点钟位置设置有按键，参考图3-图6所示，穿戴主体100的六点钟位置和十二点钟位置处设置有第一出线1351和第二出线1352，穿戴主体100的九点钟位置设置有第一折弯1353和第二折弯1354，这些位置处，穿戴主体100内部布局紧凑，且可能存在影响馈点和接地点的金属器件。第一馈点221、第二馈点231、第三馈点31、第一接地点32、第二接地点33的位置，可以避开上述布局紧凑的位置设置，且靠近六点钟位置和十二点钟位置设置，以尽量靠近手臂外沿设置，降低手臂对天线辐射性能的影响。
同时，第一天线200的第一馈点221、第二馈点231，与第二天线300的第三馈点31、第一接地点32、第二接地点33各自间隔一定距离设置，可以避免第一天线200和第二天线300互相影响。
本申请实施例中，第一天线200和第二天线300的共存设计，可以解决天线的带宽实现、通信制式拆分问题，可以更好的减小射频通路插损，提升天线性能。
此外，现有技术中，在可穿戴设备的穿戴主体内设置两幅天线时，至少一副天线设置在穿戴主体的内部，被金属外壳包围，被电路板、马达、电池等器件覆盖，天线净空环境差，而且穿戴主体在佩戴时，天线贴近手臂，人体吸收严重，所以严重影响到天线的性能。而本申请实施例中，第一天线设置在屏幕组件和金属中框之间的容置空间内，第二天线利用主电路板和金属中框之间的缝隙形成，可以有效降低穿戴主体的金属外壳和内部电子器 件、人体吸收的因素对天线性能的影响。
本申请实施例中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应作广义理解，例如，可以是固定连接，也可以是通过中间媒介间接相连，可以是两个元件内部的连通或者两个元件的相互作用关系。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本申请实施例中的具体含义。本申请实施例的说明书和权利要求书及上述附图中的术语“第一”、“第二”、“第三”等是用于区别类似的对象，而不必用于描述特定的顺序或先后次序。
此外，术语“包括”和“具有”以及他们的任何变形，意图在于覆盖不排他的包含，例如，包含了一系列步骤或单元的过程、方法、系统、产品或设备不必限于清楚地列出的那些步骤或单元，而是可包括没有清楚地列出的或对于这些过程、方法、产品或设备固有的其它步骤或单元。
最后应说明的是：以上各实施例仅用以说明本申请实施例的技术方案，而非对其限制；尽管参照前述各实施例对本申请实施例进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分或者全部技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本申请实施例各实施例技术方案的范围。

Claims (14)

  1. 一种可穿戴设备，包括穿戴主体，其特征在于，所述穿戴主体包括：盖板、屏幕组件、天线支架、第一天线、金属中框、电路板和底壳；
    所述盖板和所述底壳分别连接在所述金属中框的两侧，所述屏幕组件连接在所述盖板朝向所述底壳的一侧，所述电路板位于所述金属中框、所述屏幕组件和所述底壳围设成的空间内；
    所述屏幕组件的端部、所述金属中框的内壁、所述盖板的内壁共同围设成容置空间，所述天线支架设置在所述容置空间内，所述第一天线设置在所述天线支架上并通过馈点和所述电路板连接。
  2. 根据权利要求1所述的可穿戴设备，其特征在于，所述天线支架固定在所述金属中框和/或所述盖板上。
  3. 根据权利要求1或2所述的可穿戴设备，其特征在于，所述天线支架包括支架主体和走线部，所述支架主体设置为环形，所述走线部凸出设置在所述支架主体的部分长度上，金属走线设置在所述走线部上以形成所述第一天线。
  4. 根据权利要求3所述的可穿戴设备，其特征在于，所述走线部在所述穿戴主体的厚度方向上的高度不低于所述金属中框的高度。
  5. 根据权利要求3所述的可穿戴设备，其特征在于，所述天线支架还包括延伸部，所述支架主体向着靠近所述金属中框的方向延伸形成所述延伸部，所述金属中框的内壁上设置有限位凸台，所述延伸部粘设在所述盖板和所述限位凸台的上表面之间。
  6. 根据权利要求1-5任一项所述的可穿戴设备，其特征在于，所述第一天线包括第一辐射体和/或第二辐射体，所述第一辐射体为GNSS天线，所述第一辐射体上设置有第一馈点，所述第二辐射体为BT/WIFI天线，所述第二辐射体上设置有第二馈点。
  7. 根据权利要求1-6任一项所述的可穿戴设备，其特征在于，所述第一天线为镀覆在所述天线支架上的金属走线；或者，所述第一天线为嵌入在所述天线支架上的金属件；或者，所述第一天线为贴设在所述天线支架上的柔性电路板。
  8. 根据权利要求1-7任一项所述的可穿戴设备，其特征在于，所述第一天线通过弹片、螺丝或金属片进行馈电。
  9. 根据权利要求1-8任一项所述的可穿戴设备，其特征在于，所述第一天线的宽度为0.6mm-0.8mm。
  10. 根据权利要求1-9任一项所述的可穿戴设备，其特征在于，所述电路板和所述金属中框之间具有缝隙，所述电路板通过第三馈点和第一接地点、第二接地点与所述金属中框分别连接，所述电路板、所述金属中框以及所述电路板和所述金属中框之间的缝隙形成第二天线。
  11. 根据权利要求10所述的可穿戴设备，其特征在于，所述第二天线为Cell天线和/或GNSS天线。
  12. 根据权利要求10或11所述的可穿戴设备，其特征在于，所述电路板和所述金属中框之间还设置有第三接地点，所述第三接地点位于所述第三馈点和所述第二接地点之间。
  13. 根据权利要求10-12任一项所述的可穿戴设备，其特征在于，所述金属中框通过用于调谐的电感或电容接地。
  14. 根据权利要求10-13任一项所述的可穿戴设备，其特征在于，所述缝隙的宽度为0.5mm-1.8mm。
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