Wearable device

Abstract

The application discloses a wearable device, comprising: a circuit board, a metal frame and a moving piece; the metal frame is arranged along the circumference of the circuit board, and the metal frame has an annular channel arranged along the circumference of the metal frame; the moving piece is arranged in the annular channel and moves in the annular channel under the action of gravity; the metal frame comprises a plurality of metal segments arranged along the circumference, and two adjacent metal segments are separated by a break; the circuit board is provided with a feed source and a plurality of feed ports, and the feed source is connected with the plurality of feed ports respectively; the plurality of feed ports and the plurality of metal segments are connected one by one to form an antenna array based on the plurality of metal segments; in the case that the moving piece moves to the lowest point of the annular channel, the maximum radiation direction of the antenna array is directed away from the ground.

Description

TECHNICAL FIELD

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

[0002] At present, smart watches, wristbands and other wearable devices gradually enter the daily life of the public. The existing wearable devices are provided with an antenna. However, the radiation direction of the antenna is usually unchanged relative to the coordinate system of the wearing position of the wearable device. With the change of the wearing state of the wearer, the radiation direction of the antenna in various states can be completely different. Therefore, the fixed radiation direction of the antenna leads to a limited signal receiving range and poor signal receiving quality.

[0003] In the related art, some wearable devices are provided with two antennas with opposite direction patterns. However, the two antennas need to be configured with a switching switch to adapt to different application scenarios. In actual application, it is found that this antenna configuration method has high cost and occupies a large space, and cannot meet the scene use requirements of user diversity. SUMMARY

[0004] The present application aims to provide a wearable device, which at least solves the problems of high cost, large space occupation and limited use scenarios of the antenna configuration method of the existing wearable device.

[0005] In order to solve the above technical problems, the present application is implemented as follows:

[0006] In a first aspect, an embodiment of the present application provides a wearable device, comprising: a circuit board, a metal frame and a moving piece.

[0007] The metal frame is arranged along the circumference of the circuit board, and has an annular channel arranged along the circumference of the metal frame. The moving piece is arranged in the annular channel and moves in the annular channel under the action of gravity.

[0008] The metal frame comprises a plurality of metal segments arranged in the circumference, and two adjacent metal segments are separated by a gap.

[0009] The circuit board is provided with a feed source and a plurality of feed ports, and the feed source is connected with the plurality of feed ports. The plurality of feed ports and the plurality of metal segments are connected one by one to form an antenna array based on the plurality of metal segments.

[0010] In the case that the moving piece moves to the lowest point of the annular channel, the maximum radiation direction of the antenna array is directed away from the ground.

[0011] The wearable device further comprises a metal chassis;

[0012] The metal frame and the metal chassis are arranged in a stack, the metal frame and the metal chassis are electrically isolated from each other, and the metal chassis is connected with a ground end on the wearable device.

[0013] The moving piece comprises a conductive moving piece; the conductive moving piece can be moved to a position close to the lowest point where the fracture is located, and the two metal segments corresponding to the fracture are short-circuited to the metal chassis through the conductive moving piece.

[0014] Alternatively, the conductive moving piece can be moved to a position close to the feeding port located at the lowest point, and the feeding port is short-circuited to the metal chassis through the conductive moving piece.

[0015] According to the wearable device provided in the embodiment of the present application, a plurality of metal segments are arranged in a center-symmetric manner relative to the center of the annular channel, and a plurality of feeding ports are arranged in a center-symmetric manner relative to the center of the annular channel.

[0016] Among them, the number of metal segments is even; for the oppositely arranged feeding port and metal segment, the position of the feeding port is located on the line between the center of the annular channel and the center of the metal segment.

[0017] According to the wearable device provided in the embodiment of the present application, the metal middle frame comprises two metal segments.

[0018] Two fractures are formed between the two metal segments, and the center line of the two fractures is perpendicular to the extension direction of the watchband of the wearable device.

[0019] According to the wearable device provided in the embodiment of the present application, the metal middle frame comprises four metal segments.

[0020] Four fractures are formed between the four metal segments, and the center lines of two non-adjacent fractures among the four fractures are perpendicular to the extension direction of the watchband of the wearable device, and the center lines of the other two non-adjacent fractures among the four fractures are arranged along the extension direction of the watchband.

[0021] According to the wearable device provided in the embodiment of the present application, the conductive moving piece comprises a metal ball, the width of the annular channel is greater than the diameter of the metal ball, and the diameter of the metal ball is greater than the width of the fracture.

[0022] According to the wearable device provided in the embodiment of the present application, the metal frame comprises an inner frame body and an outer frame body.

[0023] The annular channel is formed between the inner frame body and the outer frame body;

[0024] The inner frame body is arranged along the circumferential direction of the circuit board, the feed source is connected with the inner frame body, and the inner frame body is electrically connected with each feed port; and the outer frame body is sequentially spaced through a plurality of the discontinuities along the circumferential direction to form a plurality of the metal segments.

[0025] According to the wearable device provided in the embodiments of the present application, the outer frame body is provided with multiple layers, and the multiple layers of the outer frame body are arranged in a stacked manner;

[0026] In the normal direction of the circuit board, the projections of the discontinuities on the adjacent two layers of the outer frame body are arranged in a staggered manner.

[0027] According to the wearable device provided in the embodiments of the present application, the wearable device further comprises a display module and a metal chassis;

[0028] In the normal direction of the circuit board, the display module, the circuit board and the metal chassis are sequentially arranged in a stacked manner;

[0029] The outer frame body is provided with three layers, one of the three layers of the outer frame body is arranged along the circumferential direction of the display module, one of the three layers of the outer frame body is arranged in the same layer as the circuit board, and one of the three layers of the outer frame body is arranged along the circumferential direction of the metal chassis.

[0030] According to the wearable device provided in the embodiments of the present application, the metal frame comprises an inner frame body and an outer frame body;

[0031] The annular channel is formed between the inner frame body and the outer frame body; the inner frame body and the outer frame body are sequentially spaced through a plurality of the discontinuities along the circumferential direction to form a plurality of the metal segments; and a plurality of the feed ports and a plurality of the outer frame bodies corresponding to the metal segments are connected;

[0032] The circuit board is further provided with a SAR sensor; the inner frame body and the outer frame body corresponding to each metal segment are respectively connected with the SAR sensor, and the SAR sensor is connected with the feed source;

[0033] The moving piece comprises a high dielectric constant medium; in the case that the high dielectric constant medium moves into the metal segment at the lowest point, the feed source controls the feed port corresponding to the metal segment at the lowest point to feed power at a first power according to the information fed back by the SAR sensor, and controls the other feed ports to feed power at a second power, the second power being greater than the first power.

[0034] In the embodiments of the present application, by configuring the metal frame of the wearable device as a plurality of metal segments separated from each other, by arranging the circuit board on the inner side of the metal frame, and by feeding each metal segment with power from the feed on the circuit board, the metal segments corresponding to the metal frame form an antenna array; since the metal frame has a ring-shaped channel, when the wearable device is in different application scenarios, the moving piece will move to the lowest point of the ring-shaped channel under the action of its own gravity, and based on the cooperation of the moving piece and the metal segment or the feed port close to the lowest point, the power received by the metal segment close to the lowest point is reduced, thereby weakening the radiation intensity of the part of the antenna array on the downside, so that the maximum radiation direction excited by the antenna array feeding is directed away from the ground.

[0035] As can be seen from the above, the present application realizes the use of the metal frame of the wearable device as an antenna array, which can ensure that the maximum radiation direction of the antenna array is directed away from the ground when the wearable device is in different application scenarios. This antenna design scheme not only has low cost and reduces the occupation of limited space on the wearable device, but also can ensure the strength of antenna signal transmission, thereby meeting the scene use requirements of users' diversity.

[0036] Additional aspects and advantages of the present application will be in part apparent and in part pointed out hereinafter. BRIEF DESCRIPTION OF DRAWINGS

[0037] The above and / or additional aspects and advantages of the present application will become apparent and be readily appreciated from the following description, including the appended drawings, wherein:

[0038] Figure 1 is a wearing schematic diagram of a first wearable device according to an embodiment of the present application;

[0039] Figure 2 is a cross-sectional view of the wearable device in Figure 1

[0040] Figure 3 is a wearing schematic diagram of a second wearable device according to an embodiment of the present application when the user's arm is in a vertical state;

[0041] Figure 4 is a cross-sectional view of the wearable device in Figure 3

[0042] Figure 5 is a wearing schematic diagram of a second wearable device according to an embodiment of the present application when the user's arm is in an inclined state;

[0043] Figure 6 is a cross-sectional view of the wearable device in​​Figure 5 A diagram showing the pointing of the sum pattern of the radiated signals of the middle antenna array;

[0044] Figure 7 is a cross-sectional view of a third wearable device according to an embodiment of the present application;

[0045] Figure 8 is a cross-sectional view of a third wearable device according to an embodiment of the present application; Figure 7 is a diagram showing a comparison of feeding design of a multi-layer antenna formed based on a metal frame;

[0046] Figure 9 is a wearing diagram of a fourth wearable device according to an embodiment of the present application;

[0047] Reference signs:

[0048] 1, circuit board; 11, feed source; 12, feed port; 13, SAR sensor;

[0049] 2, metal frame; 21, metal segment; 201, fracture; 211, inner frame body; 212, outer frame body; 20, annular channel;

[0050] 3, moving part; 4, display module; 5, metal chassis; 6, watchband;

[0051] 100, arm. DETAILED DESCRIPTION

[0052] The embodiments of the present application will be described in detail below with reference to the drawings, in which the same or similar components have the same reference numerals throughout the several views. The embodiments described below are examples in which the present application is applied, and are intended to explain the present application, and should not be understood as limiting the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative work under the premise that the present application falls within the scope of the present application.

[0053] The terms "first", "second" in the specification and claims of the present application can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more. In addition, "and / or" in the specification and claims means at least one of the connected objects, and the character " / ", generally means that the front and rear associated objects are in an "or" relationship.

[0054] In the description of the present application, it needs to be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0055] In the description of the present application, it needs to be understood that the terms "mounting", "connecting", "connecting" should be understood broadly unless otherwise explicitly specified and limited, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be connected inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0056] The wearable device provided by the embodiments of the present application will be described in detail below in combination with specific embodiments and application scenarios. Figures 1-9

[0057] In the first aspect, as shown in Figure 1 , Figure 3 and Figure 9 , the embodiments of the present application provide a wearable device, comprising: a circuit board 1, a metal frame 2 and a moving piece 3.

[0058] The metal frame 2 is arranged along the circumference of the circuit board 1, the metal frame 2 has an annular channel 20, the annular channel 20 is arranged along the circumference of the metal frame 2; the moving piece 3 is arranged in the annular channel 20 and moves in the annular channel 20 under the action of gravity.

[0059] The metal frame 2 comprises a plurality of metal segments 21, the plurality of metal segments 21 are arranged in the circumferential direction, and two adjacent metal segments 21 are separated by a break 201.

[0060] The circuit board 1 is provided with a feed source 11 and a plurality of feed ports 12, the feed source 11 is connected with the plurality of feed ports 12 respectively; the plurality of feed ports 12 and the plurality of metal segments 21 are connected one by one, so as to form an antenna array based on the plurality of metal segments 21.

[0061] In the case that the moving piece 3 moves to the lowest point of the annular channel 20, the maximum radiation direction of the antenna array is directed away from the ground.

[0062] ​It can be understood that the wearable device can be a smart watch or a smart bracelet known in the art. The wearable device comprises a device body and a watchband 6. The device body comprises a display module 4, a metal bezel 2 and a metal chassis 5 arranged in layers, and the metal bezel 2 and the watchband 6 are connected.

[0063] The circuit board 1 is arranged in the space defined by the metal bezel 2, and the circuit board 1 can be a printed circuit board (PCB) known in the art. The feed source 11 comprises a radio frequency power amplification circuit arranged on the circuit board 1, and the feed source 11 is connected to each feed port 12 through a conductive circuit in the circuit board 1, so that multiple feed ports 12 can simultaneously feed power to the corresponding metal segments 21, ensuring that the antenna array formed based on the multiple metal segments 21 can work reliably.

[0064] The material of the metal bezel 2 can be stainless steel, copper, aluminum, etc., which is not limited in detail. In actual application, the metal bezel 2 is annular, and the metal bezel 2 can be configured as two parts inside and outside, or a ring-shaped groove extending along the circumference of the metal bezel 2 is arranged on the metal bezel 2 to form an annular channel 20 based on the metal bezel 2. The width of the annular channel 20 at each position along its circumference remains the same, and the moving part 3 can be configured as a spherical structure, a columnar structure, a cubic structure, etc., to ensure that the moving part 3 can smoothly move along the annular channel 20 under the action of gravity.

[0065] When the metal chassis 5 of the wearable device is arranged obliquely or vertically relative to the ground, the moving part 3 can move to the lowest point of the annular channel 20 under the action of gravity, at which time the maximum radiation direction of the antenna array is parallel to the plane in which the metal chassis 5 lies, but the radiation direction of the antenna array has at least a vertical component towards the direction away from the ground, i.e., the maximum radiation direction of the antenna array is towards the direction away from the ground.

[0066] In actual application, when the moving part 3 is at the lowest point of the annular channel 20, based on the cooperation of the moving part 3 with the metal segment 21 or the feed port 12 close to the lowest point, the feed energy received by the metal segment 21 close to the lowest point can be reduced, and under the condition that the feed energy received by the other metal segments 21 remains unchanged, it can be ensured that the maximum radiation direction of the antenna array is towards the direction away from the ground.

[0067] In the embodiments of the present application, by configuring the metal frame 2 of the wearable device as a plurality of metal segments 21 separated from each other, by arranging the circuit board 1 on the inner side of the metal frame 2, and by feeding the metal segments 21 with the feed source 11 on the circuit board 1 respectively, the metal segments 21 corresponding to the metal frame 2 form an antenna array; since the metal frame 2 has the annular channel 20, in different application scenarios of the wearable device, the moving piece 3 will move to the lowest point of the annular channel 20 under the action of its own gravity, and based on the cooperation of the moving piece 3 and the metal segment 21 or the feed port 12 close to the lowest point, the feeding energy received by the metal segment 21 close to the lowest point is reduced, so as to weaken the radiation intensity of the part of the antenna array on the lower side, so that the maximum radiation direction excited by the antenna array feeding is always perpendicular to the ground upwards.

[0068] As can be seen from the above, the present application realizes the use of the metal frame 2 of the wearable device as an antenna array, which can ensure that the maximum radiation direction of the antenna array is directed away from the ground in different application scenarios of the wearable device, thereby ensuring the strength of the antenna signal transmission.

[0069] Compared with the existing mode of switching and adjusting two reverse directional diagrams by using a double-pole double-throw switch, the antenna design of the present application relies on the inherent structure of the metal frame 2, which not only has low cost and reduces the occupation of limited space on the wearable device, but also can automatically adjust the antenna use scenario of the wearable device according to gravity, thereby meeting the diverse scene use requirements of users.

[0070] In some embodiments, as shown in Figure 1 , Figure 2 and Figure 3 , the wearable device further comprises a metal chassis 5. The metal frame 2 and the metal chassis 5 are arranged in a stack, the metal frame 2 and the metal chassis 5 are electrically isolated from each other, and the metal chassis 5 is connected with a ground terminal on the wearable device.

[0071] The moving piece 3 comprises a conductive moving piece; the conductive moving piece can move to the position close to the fracture 201 at the lowest point, and the two metal segments 21 corresponding to the fracture 201 are short-circuited with the metal chassis 5 through the conductive moving piece; or the conductive moving piece can move to the position close to the feed port 12 at the lowest point, and the feed port 12 is short-circuited with the metal chassis 5 through the conductive moving piece.

[0072] It can be understood that the moving piece 3 can be made of gold, silver, copper or other materials with high electrical conductivity, so as to form a conductive moving piece.

[0073] In the process of moving the conductive moving piece along the annular channel 20, the conductive moving piece can be in contact with the metal chassis 5, but the conductive moving piece and the metal frame 2 are electrically isolated.

[0074] Thus, only when the conductive moving part is located near the lowest point of the fracture 201, the two metal segments 21 corresponding to the fracture 201 are grounded through the conductive moving part, and a part of the feeding energy on the two metal segments 21 is directly transmitted to the ground, so that the maximum radiation direction of the antenna array can be ensured to be directed away from the ground in the case that the feeding energy received by the other metal segments 21 remains unchanged.

[0075] Correspondingly, when the conductive moving part is located near the lowest point of the feeding port 12, the feeding port 12 near the lowest point is grounded through the conductive moving part, and a part of the feeding energy of the feeding port 12 is directly transmitted to the ground, so that the maximum radiation direction of the antenna array can also be ensured to be directed away from the ground in the case that the feeding energy output by the other feeding ports 12 from the respective corresponding metal segments 21 remains unchanged.

[0076] In some embodiments, as shown in Figs. 1 and 2, the plurality of metal segments 21 are arranged in a central symmetry with respect to the center of the annular channel 20, and the plurality of feeding ports 12 are arranged in a central symmetry with respect to the center of the annular channel 20. Figure 1 and Figure 3 In some embodiments, as shown in Figs. 1 and 2, the plurality of metal segments 21 are arranged in a central symmetry with respect to the center of the annular channel 20, and the plurality of feeding ports 12 are arranged in a central symmetry with respect to the center of the annular channel 20.

[0077] In some embodiments, the number of metal segments 21 is even; for the oppositely arranged feeding ports 12 and metal segments 21, the feeding ports 12 are arranged at a position on the line between the center of the annular channel 20 and the center of the metal segment 21.

[0078] It can be understood that, since the plurality of metal segments 21 are arranged in a central symmetry with respect to the center of the annular channel 20, and the number of metal segments 21 is even, the fractures 201 between the plurality of metal segments 21 are arranged in an even number of pairs, and the center line of each pair of fractures 201 can pass through the center of the annular channel 20.

[0079] In some embodiments, the number of metal segments 21 can be two, four, six, eight, etc., which is not specifically limited.

[0080] Thus, when one of the fractures 201 is at the lowest point of the annular channel 20, the other fracture 201 arranged in a pair with the fracture 201 must be at the highest point of the annular channel 20, and when the conductive moving part moves to the fracture 201 at the lowest point under the action of gravity, the two metal segments 21 corresponding to the fracture 201 at the lowest point are grounded, resulting in only the other fractures 201 above working, so that the sum pattern of the radiation patterns of the signals radiated from the fractures 201 is ensured to be directed away from the ground.

[0081] Correspondingly, when the center of one of the metal segments 21 is at the lowest point of the annular channel 20, the conductive mobile piece will move to the center of the metal segment 21 under the action of gravity and be located between the feed port 12 at the lowest point and the center of the metal segment 21. At this time, most of the energy fed by the feed port 12 at the lowest point will directly pass through the conductive mobile piece to the metal chassis 5, that is, the feed port 12 at the lowest point realizes a grounding connection, so that the two breaks 201 corresponding to the metal segment 21 receive less power, while the other breaks 201 work normally, so that the overall and directional pattern of the antenna array is oriented away from the ground.

[0082] In some embodiments, as shown in Figure 1 The metal frame 2 includes two metal segments 21; two breaks 201 are formed between the two metal segments 21, and the center line of the two breaks 201 is perpendicular to the extension direction of the watchband 6 of the wearable device.

[0083] In the case where the extension direction of the watchband 6 is perpendicular to the vertical direction, the conductive mobile piece can move to the one of the two breaks 201 that is at the low position.

[0084] It can be understood that when the metal frame 2 is configured as two metal segments 21, two feed ports 12 are provided, and the two feed ports 12 and the two metal segments 21 are arranged one by one. The feed source 11 is connected to the two feed ports 12 through the conductive circuit in the circuit board 1, so that the two feed ports 12 simultaneously feed the respective corresponding metal segments 21, without the need for a double-pole double-throw switch to switch the working state of the two feed ports 12.

[0085] When the user wears the wearable device on the arm 100, the extension direction of the watchband 6 is perpendicular to the extension direction of the arm 100, which makes the center line of the two breaks 201 arranged along the extension direction of the arm 100.

[0086] The present application aims to distinguish between the two use scenarios of the user wearing the wearable device with the left hand or the right hand by arranging two opposite breaks 201 in the metal frame 2. However, whether the user wears the wearable device with the left hand or the right hand, when the user's arm 100 is vertically upward or downward, the conductive mobile piece will inevitably move to the one of the two breaks 201 that is at the low position along the annular channel 20 under the action of gravity, so that the break 201 cannot work, and the antenna signal is mainly radiated through the one of the two breaks 201 that is at the high position, thereby ensuring that the radiation direction (directional pattern) of the antenna array excited when fed is perpendicular to the ground and upward.

[0087] In some embodiments, as shown in Figures 3 to 6As shown, the metal frame 2 comprises four metal segments 21; four discontinuities 201 are formed between the four metal segments 21, the center line of two non-adjacent discontinuities 201 is perpendicular to the extension direction of the watchband 6 of the wearable device, and the center line of the other two non-adjacent discontinuities 201 is arranged along the extension direction of the watchband 6.

[0088] When the extension direction of the watchband 6 is perpendicular to the vertical direction or arranged along the vertical direction, the conductive moving piece is clamped in one of the four discontinuities 201 at the lowest point.

[0089] When the extension direction of the watchband 6 forms a 45° angle with the vertical direction, the conductive moving piece moves to one of the four metal segments 21 at the lowest point and is connected to the corresponding feed port 12 of the metal segment 21.

[0090] It can be understood that when the metal frame 2 is configured as four metal segments 21, the feed port 12 is provided with four, and the four feed ports 12 and the four metal segments 21 are arranged one by one. The feed source 11 is connected to the four feed ports 12 through the conductive circuit in the circuit board 1, so that the four feed ports 12 simultaneously feed the corresponding metal segments 21, without the need for a double-pole double-throw switch to switch the working state of the four feed ports 12.

[0091] In actual application, compared with an antenna array based on two metal segments 21, an antenna array based on four metal segments 21 can more sensitively identify more user scenarios.

[0092] As shown in Figure 3 When the user's arm 100 is vertically upward or downward, the conductive moving piece will move to one of the four discontinuities 201 at the low position under the action of gravity, so that the discontinuity 201 cannot work, and the antenna signal is mainly radiated through one of the other three discontinuities 201 at the high position.

[0093] As shown in Figure 3 and Figure 4 When the conductive moving piece is clamped in the discontinuity 201 at the lowest position, the radiation pattern of the above-mentioned other three discontinuities 201 is shown as T1, T2 and T3 respectively, and the sum of the three direction patterns is shown as T. According to the direction of the sum direction pattern T, when the conductive moving piece is clamped in one of the four discontinuities 201 at the low position, the maximum radiation direction excited by the antenna array feed is perpendicular to the ground upward.

[0094] As shown in Figure 5As shown, when the user's arm 100 is tilted in the direction of extension and vertical, for example, when the angle between the direction of extension and vertical is 45°, the conductive moving part will move along the annular channel 20 under its own weight to the lowest point of the four metal segments 21 and connect to the power supply port 12 corresponding to that metal segment 21.

[0095] At this time, the conductive moving part short-circuits the power supply port 12 at the lowest point to the metal chassis 5, and the power supply port 12 at the lowest point is grounded, which reduces the effective power supply received by the two breaks 201 corresponding to the metal segment 21, while the other three breaks 201 work normally.

[0096] like Figure 5 and Figure 6 As shown, when the conductive moving part short-circuits the lowest-positioned feed port 12, the radiation patterns of the two upper breaks 201 are represented by T1' and T2', respectively, and the radiation patterns of the two lower breaks 201 are represented by T3' and T4', respectively. The sum of these four radiation patterns is represented by T'. According to the direction of the sum of the radiation patterns T', it can be seen that when the lowest-positioned feed port 12 is grounded, the maximum radiation direction generated by the excitation during antenna array feeding is perpendicular to the ground and upwards.

[0097] In some embodiments, such as Figure 1 , Figure 2 , Figure 3 and Figure 5 It is understood that, in order to ensure that the conductive moving part can move smoothly along the annular channel 20, the conductive moving part can be configured as a metal ball.

[0098] In practical applications, the shape and size of the metal ball can be adapted to meet actual needs. The metal ball can be made of gold, silver, stainless steel, copper, aluminum, etc., without any specific limitations.

[0099] In some embodiments, the width of the annular channel 20 is greater than the diameter of the metal ball, and the diameter of the metal ball is greater than the width of the break 201.

[0100] like Figure 1 As shown, L1 is the width of the fracture 201, L2 is the width of the annular channel 20, and L3 is the diameter of the metal sphere. It should be noted that... Figure 1 In order to describe the working principle of wearable devices, the structural features corresponding to L1, L2 and L3 are drawn with relatively large dimensions. In actual applications, the dimensions of these three will be greatly reduced. However, this design will not affect the appearance of the wearable device or squeeze the layout space of the circuit board 1.

[0101] In some embodiments, such asFigure 1 As shown, the metal frame 2 comprises an inner frame body 211 and an outer frame body 212; and the annular channel 20 is formed between the inner frame body 211 and the outer frame body 212.

[0102] The inner frame body 211 is arranged along the circumference of the circuit board 1, the feed source 11 is connected to the inner frame body 211, and the inner frame body 211 is electrically connected to each feed port 12.

[0103] The outer frame body 212 is circumferentially spaced by a plurality of breaks 201 to form a plurality of metal segments 21.

[0104] It can be understood that the inner frame body 211 and the outer frame body 212 are both annular, the inner frame body 211 is arranged inside the outer frame body 212, and the inner frame body 211 and the outer frame body 212 are arranged in a spaced manner on the metal chassis 5 to form the annular channel 20 between the inner frame body 211 and the outer frame body 212.

[0105] Among them, the inner frame body 211 and the outer frame body 212 can be configured as a circular ring.

[0106] In actual application, the inner frame body 211 can be nested on the periphery of the circuit board 1, or a layer of metal material can be plated on the periphery of the circuit board 1 to form the inner frame body 211 on the periphery of the circuit board 1.

[0107] The present application connects the feed source 11 and the inner frame body 211, and the inner frame body 211 is electrically connected to each feed port 12, which facilitates the simplification of the circuit structure between the feed source 11 and each feed port 12, facilitates the synchronization of the feed of the feed source 11 to each feed port 12, realizes the simultaneous feeding of each corresponding metal segment 21 by the plurality of feed ports 12, and thus ensures that the antenna array formed based on the plurality of metal segments 21 can work reliably.

[0108] In some embodiments, as shown in Figure 7 and Figure 8 As shown, the outer frame body 212 is provided with a plurality of layers, and the plurality of outer frame bodies 212 are arranged in a stacked manner. In the normal direction of the circuit board 1, the projections of the breaks 201 on the adjacent two layers of the outer frame body 212 are arranged in a staggered manner.

[0109] It can be understood that according to actual requirements, the present application can configure the number of layers of the outer frame body 212 to form a plurality of layers of antennas on the wearable device.

[0110] Similar to the working principle of the above antenna array, when the conductive moving part moves to the break 201 corresponding to each layer of the outer frame body 212, or the conductive moving part connects each layer of the outer frame body 212 to the ground, the maximum radiation direction excited by the feeding of the multi-layer antenna can be ensured to be directed away from the ground.

[0111] Therefore, the multilayer antenna formed based on the multilayer outer frame 212 can obtain a larger debugging space, and the radiation signal is easier to cover the full frequency band of the LMH.

[0112] In order to facilitate the adjustment of the working mode of the multilayer antenna, the projections of the breaks 201 on the adjacent two outer frames 212 can be arranged in a staggered manner.

[0113] In the case where each outer frame 212 is provided with a plurality of breaks 201 distributed along the circumference, the staggered angle of the projections of the breaks 201 on the adjacent outer frames 212 relative to the center of the annular channel 20 can be 90°, 60°, 45°, etc., which is not specifically limited.

[0114] Among them, the outer frame 212 can be specifically configured with two or four breaks 201.

[0115] In some embodiments, as shown in Figure 7 and Figure 8 The wearable device further includes a display module 4 and a metal chassis 5.

[0116] Along the normal direction of the circuit board 1, the display module 4, the circuit board 1 and the metal chassis 5 are sequentially stacked.

[0117] The outer frame 212 is provided with three layers, one of the three outer frames 212 in the uppermost layer is arranged along the circumference of the display module 4, one of the three outer frames 212 in the middle layer is arranged in the same layer as the circuit board 1, and one of the three outer frames 212 in the lowermost layer is arranged along the circumference of the metal chassis 5.

[0118] Among them, Figure 8 The figure (a) in the figure specifically illustrates the layout of one of the three outer frames 212 in the uppermost layer relative to each feed port 12; Figure 8 The figure (b) in the figure specifically illustrates the layout of one of the three outer frames 212 in the middle layer relative to each feed port 12, Figure 8 The figure (c) in the figure specifically illustrates the layout of one of the three outer frames 212 in the lowermost layer relative to each feed port 12.

[0119] As can be seen from the above, the present application not only realizes the layout of the multilayer antenna on the wearable device based on the outer frame 212, but also utilizes the peripheral space of the display module 4 and the metal chassis 5 to layout the antenna structure of the corresponding level, thereby realizing reliable installation of the multilayer antenna, ensuring the compactness of the antenna layout on the wearable device, increasing the effective length of the antenna, and achieving the purpose of not occupying space while obtaining a larger debugging space.

[0120] In some embodiments, as shown in Figure 9As shown, the metal frame 2 includes an inner frame body 211 and an outer frame body 212.

[0121] An annular channel 20 is formed between the inner frame body 211 and the outer frame body 212; the inner frame body 211 and the outer frame body 212 are sequentially spaced apart along the circumference by a plurality of breaks 201 to form a plurality of metal segments 21; a plurality of feeding ports 12 and the outer frame body 212 corresponding to the plurality of metal segments 21 are connected.

[0122] The circuit board 1 is further provided with a SAR sensor 13; the inner frame body 211 and the outer frame body 212 corresponding to each metal segment 21 are respectively connected with the SAR sensor 13, and the SAR sensor 13 is connected with the feed source 11.

[0123] The moving member 3 includes a high dielectric constant medium; in the case that the high dielectric constant medium moves into the metal segment 21 at the lowest point, the feed source 11 controls the feeding port 12 corresponding to the metal segment 21 at the lowest point to feed with a first power and controls other feeding ports 12 to feed with a second power according to the information fed back by the SAR sensor 13, and the second power is greater than the first power.

[0124] It can be understood that the dielectric constant of the high dielectric constant medium of the present application is greater than 1, and the high dielectric constant medium can be made of glass, marble, polyvinyl chloride, etc.

[0125] The annular channel 20 can be configured as a circular annular channel, and the projection of the high dielectric constant medium along the normal direction of the circuit board 1 can be arranged in a fan ring shape, so as to better ensure that the high dielectric constant medium and the inner wall of the annular channel 20 have a relatively large contact area while the high dielectric constant medium moves along the extension direction of the annular channel 20.

[0126] In order to control the specific absorption rate (SAR), when designing an antenna, a SAR sensor is used to obtain the change of the electromagnetic field near the antenna and generate a response capacitance value to determine the use scenario of the user, so as to control the transmission power of the antenna.

[0127] Based on this, in the embodiment of the present application, the inner frame body 211 and the outer frame body 212 corresponding to each metal segment 21 are respectively connected with the SAR sensor 13 by using the above-mentioned SAR sensor 13, and since the metal frame 2 is configured as a plurality of metal segments 21 separated from each other, the inner frame body 211 and the outer frame body 212 corresponding to each metal segment 21 form an equivalent capacitance.

[0128] The SAR sensor 13 can be connected with the inner frame body 211 corresponding to each metal segment 21 by a plurality of first conductive lines, and the SAR sensor 13 can be connected with the outer frame body 212 corresponding to each metal segment 21 by a plurality of second conductive lines.

[0129] Thus, when the user switches the use scene of the wearable device, the high dielectric constant medium will move between different equivalent capacitances along the extension direction of the annular channel 20 under the action of its own gravity, and finally move to the equivalent capacitance (one of the multiple equivalent capacitances at the lowest point) pointing in the direction of gravity, which will cause the capacitance value of the equivalent capacitance at the lowest point to increase sharply. At this time, the SAR sensor 13 can feed back the capacitance value to the feed source 11, and the feed source 11 controls the feed port 12 corresponding to the metal segment 21 at the lowest position to be fed with relatively low power, so as to ensure that the sum of the radiation signals and the radiation pattern of the other metal segments 21 are directed away from the ground (pointing to the sky).

[0130] Compared with the prior art, the present application also does not need to use a double-pole double-throw switch to switch and adjust the two pattern-reversed antennas, but relies on the inherent structure of the metal frame 2 to realize the layout of the antenna, which not only has low cost, reduces the occupation of the limited space on the wearable device, but also can automatically adjust the use scene of the antenna of the wearable device according to the gravity, and meet the user's diverse scene use requirements.

[0131] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the exemplary description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0132] Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and purposes of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A wearable device, characterized in that, include: Circuit boards, metal frames, and moving parts; The metal frame extends circumferentially along the circuit board, and the metal frame has an annular channel that extends circumferentially along the metal frame. The movable component is disposed in the annular channel and moves within the annular channel under the action of gravity; The metal frame includes multiple metal segments arranged circumferentially, with adjacent metal segments separated by a break. The circuit board is provided with a feed source and multiple power supply ports, and the feed source is connected to the multiple power supply ports respectively; The multiple feed ports and the multiple metal segments are connected one-to-one to form an antenna array based on the multiple metal segments; When the moving part moves to the lowest point of the annular channel, the maximum radiation direction of the antenna array is oriented away from the ground. The wearable device also includes: a metal chassis; The metal frame and the metal chassis are stacked and electrically isolated from each other. The metal chassis is connected to the grounding terminal of the wearable device. The moving part includes a conductive moving part. The conductive moving part can move to a position close to the break point at the lowest point, and the two metal segments corresponding to the break point are short-circuited to the metal chassis through the conductive moving part; or, the conductive moving part can move to a position close to the power supply port at the lowest point, and the power supply port is short-circuited to the metal chassis through the conductive moving part.

2. The wearable device according to claim 1, characterized in that, The plurality of metal segments are arranged in a centrally symmetrical manner with respect to the center of the annular channel, and the plurality of power supply ports are arranged in a centrally symmetrical manner with respect to the center of the annular channel; The number of metal segments is even; for the power supply port and the metal segments arranged opposite each other, the power supply port is located on the line connecting the center of the annular channel and the center of the metal segment.

3. The wearable device according to claim 2, characterized in that, The metal frame includes two metal segments; Two breaks are formed between the two metal segments, and the center line connecting the two breaks is perpendicular to the extension direction of the strap of the wearable device.

4. The wearable device according to claim 2, characterized in that, The metal frame includes four metal segments; Four breaks are formed between the four metal segments. The center line connecting two non-adjacent breaks is perpendicular to the extension direction of the strap of the wearable device. The center line connecting the other two non-adjacent breaks is arranged along the extension direction of the strap.

5. The wearable device according to claim 1, characterized in that, The conductive moving component includes a metal ball; the width of the annular channel is greater than the diameter of the metal ball, and the diameter of the metal ball is greater than the width of the fracture.

6. The wearable device according to claim 1, characterized in that, The metal frame includes an inner frame and an outer frame; The annular channel is formed between the inner frame and the outer frame; The inner frame extends circumferentially along the circuit board, the feed source is connected to the inner frame, and the inner frame is electrically connected to each of the feed ports. The outer frame is formed by a plurality of metal segments spaced sequentially along the circumferential direction through a plurality of the aforementioned breaks.

7. The wearable device according to claim 6, characterized in that, The outer frame has multiple layers, and the multiple outer frame layers are stacked together. Along the normal direction of the circuit board, the projections of the breaks on two adjacent outer frames are misaligned.

8. The wearable device according to claim 6, characterized in that, The wearable device also includes a display module and a metal chassis; Along the normal of the circuit board, the display module, the circuit board, and the metal chassis are stacked sequentially. The outer frame has three layers. The top layer of the three outer frame extends circumferentially along the display module. The middle layer of the three outer frame is on the same layer as the circuit board. The bottom layer of the three outer frame extends circumferentially along the metal chassis.

9. A wearable device, characterized in that, include: Circuit boards, metal frames, and moving parts; The metal frame extends circumferentially along the circuit board, and the metal frame has an annular channel that extends circumferentially along the metal frame. The movable component is disposed in the annular channel and moves within the annular channel under the action of gravity; The metal frame includes multiple metal segments arranged circumferentially, with adjacent metal segments separated by a break. The circuit board is provided with a feed source and multiple power supply ports, and the feed source is connected to the multiple power supply ports respectively; The multiple feed ports and the multiple metal segments are connected one-to-one to form an antenna array based on the multiple metal segments; When the moving part moves to the lowest point of the annular channel, the maximum radiation direction of the antenna array is oriented away from the ground. The metal frame includes an inner frame and an outer frame; The inner frame and the outer frame form an annular channel; the inner frame and the outer frame are spaced apart sequentially by multiple breaks along the circumferential direction to form multiple metal segments; multiple power supply ports are connected to the outer frame corresponding to the multiple metal segments; The circuit board is also equipped with a SAR sensor; the inner frame and outer frame corresponding to each metal segment are respectively connected to the SAR sensor, and the SAR sensor is connected to the feed source; The moving component includes a high dielectric constant medium; when the high dielectric constant medium moves to the metal segment at its lowest point, the feed source controls the feed port corresponding to the metal segment at its lowest point to feed at a first power, and controls the other feed ports to feed at a second power, the second power being greater than the first power, based on the information fed back by the SAR sensor.

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