WO2018068190A1 - Wearable device - Google Patents

Abstract

The present invention relates to the field of smart wearable devices, and discloses a wearable device to provide a wearable device having a constant overall lateral dimension. The wearable device comprises a core assembly and an outer casing (101). The core assembly is embedded in an internal cavity of the outer casing (101). The core assembly at least comprises a display assembly (102) and a printed circuit board (PCB) (104). The display assembly (102) and the PCB (104) has a gap therebetween. An antenna (103) is disposed in the gap. The wearable device of the present invention is applicable in a smart watch or smart bracelet, and enables a lateral dimension to be constant by slightly increasing an overall thickness of the wearable device.

Description

Wearable device Technical field

The embodiments of the present invention relate to the field of smart wearable devices, and in particular, to a wearable device.

Background technique

With the continuous development of wearable device intelligent technology, there are more and more types of wearable devices, and existing wearable devices, such as watches or wristbands, are usually provided with wireless communication basics inside the wearable device. The functional communication module generally integrates a transceiver chip, a baseband and an antenna on the communication module to implement signal processing.

In existing wearable devices, there are generally two types of antennas. The first one is a smart watch and a smart wristband. The antenna is usually placed on the strap of a wearable device. The second type is many. The antenna of the wearable device adopts a built-in antenna, that is, the antenna is placed inside the wearable device, but the performance of the antenna is related to the space occupied by the antenna. Generally, the larger the antenna space, the better the performance. In the prior art, when the built-in antenna is used, the antenna is raised. The performance typically results in a relatively large overall size of the wearable device along the lateral dimension (the lateral dimension refers to the width of the wearable device).

However, when the wearable device is in contact with the human body in the arrangement of the above two antennas, since the antenna cannot radiate energy to the human body, the antenna emits a large amount of radiant energy to the human body, and the radiant energy is easily absorbed by the human body, and the antenna is lowered. The performance, for example, makes the antenna receiving sensitivity poor and the antenna transmitting power low. At the same time, when the built-in antenna is used, in order to improve the antenna performance, the size of the whole machine is affected, and the product is sacrificed in appearance.

Summary of the invention

Embodiments of the present invention provide a wearable device for providing a wearable device in which the horizontal dimension of the wearable device is constant.

In order to achieve the above object, embodiments of the present invention adopt the following technical solutions:

In a first aspect, an embodiment of the present invention provides a wearable device including a housing and a movement component, the movement component being embedded in a cavity of the housing; the movement component at least including the display component, the printed circuit board PCB There is a gap between the display part and the PCB, and the antenna is located in the gap.

The embodiment of the present invention provides a wearable device, which can make the wearable device provided by the embodiment of the present invention in the thickness (height) of the whole machine by leaving a gap between the display component and the PCB and then placing the antenna in the gap. The direction is slightly changed, while the lateral dimensions are guaranteed to be unchanged for the appearance of the wearable device.

In conjunction with the first aspect, in a first possible implementation manner of the first aspect, the antenna includes an antenna bracket, a grounding point, a signal feeding point, and an adjusting component; wherein the antenna bracket has a routing surface and a ground plane, and the routing surface is The display component is connected, the grounding surface is connected to the PCB; the signal feeding point is disposed on the grounding surface, and an adjusting component is disposed between the wiring surface and the grounding surface, and the wiring surface and the grounding surface are connected with the grounding point; the wiring surface is used Arranging an antenna trace; the position of the adjustment component is movable relative to the position of the signal feed point to change the electric field intensity distribution of the trace surface; and the signal feed point is for feeding the radio frequency signal from the ground plane to the trace surface Antenna routing.

With reference to the first aspect or the first possible implementation manner of the first aspect, in the second possible implementation manner of the first aspect, the material of the routing surface and the ground plane is made of a metal material.

With reference to any one of the possible implementations of the first aspect to the second possible implementation of the first aspect, in a third possible implementation of the first aspect, the antenna support is oriented perpendicular to the surface of the display component The cross-sectional shape is circular, elliptical or rectangular.

In conjunction with the first aspect to any one of the possible implementations of the third possible implementation of the first aspect, in a fourth possible implementation of the first aspect, the adjustment component comprises a matching component, or the adjustment component comprises a plurality of matching components; the plurality of matching components are connected in parallel, and the change of the relative position between the matching component and the signal feeding point changes the position of the electric field strength and the electric field intensity of the antenna on the antenna trace surface in the wearable device, and passes through Changing the parameters of the matching component can change the operating frequency of the antenna, so the matching components and different parameters at different locations can cause the antenna to generate multiple operating frequency bands to implement a multi-frequency antenna.

With reference to any one of the possible implementations of the first aspect to the fourth possible implementation of the first aspect, in a fifth possible implementation manner of the first aspect, the antenna bracket is non- The metal material is such that when the grounding surface and the wiring surface of the antenna holder are made of a metal material, since the antenna holder is made of a non-metal material, the grounding surface and the wiring surface are not short-circuited.

With reference to the first aspect to any one of the possible implementations of the fifth possible implementation of the first aspect, in a sixth possible implementation manner of the first aspect, the wearable device further includes a support component for supporting The display member has a first end and a second end, a first end of the support member is coupled to the display member, and a second end of the support member is coupled to the wire surface. Since the supporting member can be connected to the wiring plane of the antenna, the wiring surface of the antenna and the GND plane of the antenna are connected through a grounding point on the antenna bracket, and the GND plane of the antenna is connected to the PCB, so that the supporting component of the display component is also realized. Grounding with the whole machine reduces the risk of EMC (Electromagnetic Compatibility).

With reference to any one of the possible implementations of the first aspect to the sixth possible implementation of the first aspect, in a seventh possible implementation manner of the first aspect, the height of the gap between the PCB and the display component is less than or equal to The threshold is preset, so that the gap of the wearable device in the horizontal direction can be made constant by placing a gap with a predetermined threshold in the wearable device to place the antenna, which is compared with the prior art in order to place the antenna. Embodiments of the present invention can reduce the increase in the lateral size of the wearable device as compared to the lateral dimensions of the large wearable device.

With reference to the first aspect to any one of the possible implementations of the seventh possible implementation of the first aspect, in an eighth possible implementation manner of the first aspect, the outer casing of the wearable device is made of a metal material. The metal casing has the function of reflecting the energy radiated by the antenna. Since the metal casing can reflect the radiant energy emitted by the antenna, the radiant energy emitted by the antenna can be reflected away from the human skin, so when the wearable device When the skin of the human body comes into contact, the outer casing of the metal material can block the radiation energy from being emitted to the human body, thereby reducing the absorption of electromagnetic radiation by the human body, thereby improving the antenna receiving sensitivity of the wearable device and the antenna transmitting power.

With reference to the first aspect to any one of the possible implementations of the eighth possible implementation of the first aspect, in a ninth possible implementation manner of the first aspect, the wearable device is a smart watch or a smart hand ring.

DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art description will be briefly described below.

1 is a schematic structural diagram 1 of a wearable device according to an embodiment of the present invention;

2 is a second schematic structural diagram of an antenna according to an embodiment of the present invention;

FIG. 3a is a schematic diagram 1 of adjusting an electric field position of an adjusting component of an antenna according to an embodiment of the present invention; FIG.

FIG. 3b is a schematic diagram 2 of adjusting an electric field position of an adjusting component of an antenna according to an embodiment of the present invention; FIG.

FIG. 4 is a schematic structural diagram 2 of a wearable device according to an embodiment of the present disclosure;

FIG. 5 is a schematic diagram of an electric field of a wearable device according to an embodiment of the present invention.

detailed description

The technical solutions in the embodiments of the present invention will be clearly described below with reference to the accompanying drawings in the embodiments of the present invention.

In order to facilitate the clear description of the technical solutions of the embodiments of the present invention, in the embodiments of the present invention, the words “first” and “second” are used to distinguish the same items or similar items whose functions and functions are substantially the same. Personnel can understand that the words “first” and “second” do not limit the quantity and order of execution.

As shown in FIG. 1 , an embodiment of the present invention provides a wearable device including a housing 101 and a movement component, the movement component being embedded in a cavity of the housing 101; the movement component at least including the display component 102. The printed circuit board PCB 104 has a gap between the display component 102 and the PCB 104, and the antenna 103 is located in the gap.

The embodiment of the present invention provides a wearable device, which can make the wearable device provided by the embodiment of the present invention in the thickness (height) of the whole machine by leaving a gap between the display component and the PCB and then placing the antenna in the gap. The direction is slightly changed, while the lateral dimensions are guaranteed to be unchanged for the appearance of the wearable device.

As shown in FIG. 2, the antenna 103 includes an antenna bracket 1031, a grounding point 1032, a signal feeding point 1033, and an adjusting component 1044. The antenna bracket 1031 has a routing surface 1031a and a ground plane, and the routing surface 1031a is connected to the display component 102. The grounding surface 1031b is connected to the PCB 104; the signal feeding point 1033 is disposed on the grounding surface 1031b, and the wiring surface 1031a and the grounding surface 1031b are both connected to the grounding point 1032, and are disposed between the wiring surface 1031a and the grounding surface 1031b. An adjustment component 1044 is provided.

The routing surface 1031a is used for arranging the antenna routing. The antenna can be wired in various ways, such as IFA (Inverted-F Antenna), monopole (monopole antenna) or Loop (loop antenna). The manner of the routing is not limited in this embodiment of the present invention.

The signal feeding point 1033 is used to feed the radio frequency signal from the ground plane 1031b to the routing surface 1031a. The signal feeding point 1033 can be disposed in the groove on the routing surface, and the groove can be reserved on the routing surface. The signal feed point 1033 is arranged.

In the embodiment of the present invention, the position of the adjusting component 1044 can be moved relative to the position of the signal feeding point 1033 to change the electric field intensity distribution on the antenna routing surface 1031a. At the same time, the parameters of the adjustment component 1044 can also be changed such that the adjustment component 1044 that sets different parameters at different locations enables the antenna to generate multiple operating frequency bands.

Specifically, the material of the antenna holder 1031 in the embodiment of the present invention is a non-metal material. It can be understood that all the materials whose conductivity is lower than the preset conductivity and the absorption rate of the radiant energy is less than the preset absorption rate are all understood. It can be used as the material of the antenna holder 1031 in the embodiment of the present invention.

Illustratively, the material of the antenna holder 1031 can be made of a plastic material or a ceramic material. The specific values of the preset conductivity and the preset absorption rate are not limited in the embodiment of the present invention, and can be selected according to requirements during actual use. The material in the receivable range is selected as the material of the antenna holder 1031.

The antenna holder 1031 in the embodiment of the present invention has a sheet-like structure. Specifically, the antenna holder 1031 may have a disc-like structure, or may be an elliptical sheet structure or a rectangular sheet structure, so that the antenna bracket can be used by using a sheet structure. Reduce the overall height of the antenna, thereby reducing the overall height of the wearable device's overall design.

The antenna support 1031 of the embodiment of the present invention is circular, elliptical or rectangular in cross section perpendicular to the plane of the display member, which is not limited in the embodiment of the present invention. The plane refers to the side of the display member that is in contact with the mirror 1021.

The material of the routing surface 1301a and the grounding surface 1301b in the embodiment of the present invention are all made of a metal material. Specifically, in actual use, the antenna holder 1031 has a first surface and a second surface. A metal layer is respectively plated on the first surface and the second surface of the antenna holder 1031, so as to form a trace surface (also referred to as a TOP surface) and a ground plane (also referred to as a GND plane) of the antenna holder, and are routed in actual use. The antenna is arranged to arrange the antenna trace of the wearable product, so that the RF signal is fed from the signal feed point to the antenna trace disposed on the trace surface, forming a high-frequency alternating current, and generating high-frequency radiation energy for external radiation; The high-frequency radiant energy is also induced on the antenna wiring and generates high-frequency alternating current, which then enters the RF circuit through the signal feed point and is finally received and processed by the receiver.

Specifically, the specific shape of the outer casing is not limited in the embodiment of the present invention, as long as the outer casing can fix the movement component of the wearable product, specifically, when the movement component is located in the inner cavity of the outer casing, The display member can expose the outer casing.

Optionally, the display component may include an LCD (Liquid Crystal Display) and a lens 1021. Specifically, the lens 1021 may expose the outer casing as shown in FIG. 1 during actual use.

It should be noted that the outer casing has a contact surface close to the human body, and the contact surface may be a surface that is actually present, or may be a virtual plane, which is not limited in this embodiment of the present invention. Illustratively, when the wearable device is In the case of a smart watch, the contact surface of the outer casing close to the human body may be 1011 as shown in FIG. Taking a wearable watch as an example, the wearable watch includes a mirror surface, a casing, a back cover, and the like. When the human body wears the watch, since the back cover is in close contact with the human body, the contact surface 1011 refers to the back cover; the contact surface 1011 may also be In the interior of the wearable device, still taking the wearable watch as an example, the contact surface 1011 may refer to a plane in the housing that is adjacent to the back cover.

Optionally, in order to prevent the antenna from emitting a large amount of radiant energy to the human body, the radiant energy of the embodiment of the present invention has a function of reflecting radiant energy, and the embodiment of the present invention is The specific material is not limited. Illustratively, the material of the outer casing may be made of a metal material, that is, a metal outer casing is used as the outer casing of the wearable device provided in the embodiment of the present invention. The opposite side of the contact surface is provided with a reflecting surface, so that the radiation energy radiated to the human skin is better reflected away from the human skin to reduce the absorption of the radiant energy, thereby improving the performance of the antenna.

Optionally, the adjusting component in the embodiment of the present invention includes a matching component, or the adjusting component includes a plurality of matching components; the plurality of matching components are connected in parallel, and each matching part An electric field exists between the device and the signal feed point. Since the electric field between the signal feed point and the matching component has a strong or weak change, by adjusting the position and parameters of the matching component, the weak region of the electric field can be located in the signal line trace area of the display screen to reduce the display component pair. The role of radiant energy loss.

Specifically, in actual use, the matching component in the embodiment of the present invention may refer to a capacitor. For example, generally, two to three capacitors may be used in actual use to adjust the operating frequency, bandwidth, and the like of the antenna. Parameters, as well as ensuring the strength of the electric field within the antenna.

Specifically, in actual use, the capacitor is implemented as a matching point, as shown in FIG. 3, at the signal feed point (the position shown in FIGS. 3a and 3b) and the matching component (FIG. 3 and FIG. 3b). The electric field intensity at the position shown in the middle 1044 is the largest, and between the signal feed point 1033 and the matching member 1044, the electric field strength is decreasing and gradually reaches the lowest value, and therefore, the matching signal feeding point 1033 can be changed by changing the matching component 1044. The position can change the electric field intensity distribution on the antenna trace surface, so that the position of the lowest electric field can also be changed. At the same time, the change of the operating frequency of the antenna can also be realized by changing the parameters of the matching component 1044. As shown in FIG. 3a, when the matching component 1044 is located at the position shown in FIG. 3a, the lowest electric field region between the matching component 1044 and the signal feeding point 1033. As shown in FIG. 3a, by changing the position of the matching member 1044, as shown in FIG. 3b, the lowest electric field region between the matching member 1044 and the signal feed point 1033 is moved to the position shown in FIG. 3b, thereby enabling the electric field. The location of the lowest area also changes.

Specifically, the change of the matching component parameters can be realized by changing the magnitude of the capacitance value, for example, 1 pF, 2 pF, etc., and the antenna can also be caused by changing the parameters of the matching component and adjusting the position of the matching component relative to the signal feeding point. The change of the working frequency, therefore, the matching component with different parameters set at different positions enables the antenna to generate multiple working frequency bands, thereby realizing the multi-frequency antenna.

Optionally, in order to support the display component to ensure the reliability of the display component, the wearable device in the embodiment of the present invention further includes a support component for supporting the display component, the support component having a first end and a second end. A first end of the support member is coupled to the display member, and a second end of the support member is coupled to the wire routing surface. Specifically, the support member may be in a sheet structure during actual use to reduce the thickness of the wearable device.

Optionally, the embodiment of the present invention has a gap between the PCB and the display component along the The height of the height direction of the wearable device is not limited as long as the height of the gap existing between the PCB and the display component is less than a preset threshold. The preset threshold may be determined according to the height of the antenna, and the specific PCB and the display. The gap existing between the components should be such that the antenna is located therein.

It can also be selected according to needs during actual use, that is, in order to make the height of the whole size of the wearable device not particularly thick during actual use, the height of the gap existing between the PCB and the display part can be set as needed. In order to make the wearable device look good, for example, the height of the gap existing between the PCB and the display member in the embodiment of the present invention is between 1 mm and 5 mm. Preferably, there is a gap between the PCB and the display member. The height of the gap is 1 mm to 2.5 mm.

Optionally, the outer casing of the wearable device adopts a metal outer casing, and the metal outer casing can reflect the electromagnetic radiation emitted by the antenna, so that the radiation energy emitted by the antenna can be reflected away from the human skin, for example, reflected to the wearable device. Directly above, thus reducing the amount of radiation emitted by the antenna to the human skin, and reducing the absorption of electromagnetic radiation by the human body when the wearable device is in contact with the skin of the human body, thereby improving the antenna receiving sensitivity of the wearable device and Antenna transmit power.

It should be noted that, in the embodiment of the present invention, a gap of a preset height may be reserved between the battery of the wearable device and the display component, so as to place the antenna in the gap, so as to realize the thickness of the wearable device. A slight increase in the aspect ensures that the size of the wearable device in the horizontal direction remains unchanged.

Optionally, the wearable device is a smart watch or a smart bracelet.

It can be understood that the wearable device in the embodiment of the present invention may further include other electronic components, such as the motor 106, the battery, the FPC, the magnet, and the like as shown in FIG.

As shown in FIG. 4, FIG. 4 is a schematic structural diagram of an assembly structure of a wearable device according to an embodiment of the present invention. As can be seen from FIG. 4, an FPC (Flexible Printed Circuit) 105 is used as a device in the embodiment of the present invention. The connection between (for example, display component 102) and a PCB (Printed Circuit Board) 104.

As shown in FIG. 5, in the embodiment of the present invention, since the PCB and the LCD are respectively located on two sides of the antenna, that is, the PCB is located on the ground plane side of the antenna, and the LCD is located on the side of the antenna of the antenna, the FPC of the wearable device is It is bound to bypass the antenna side connection from the LCD side of the antenna On the PCB on the ground side of the antenna, the signal line of the LCD is the metal wire passing through the side of the antenna, and the induced current is generated on the wires due to the electric field on the side of the antenna. This part of the current enters the LCD and is inside the LCD. The loss of the circuit causes loss of radiant energy, resulting in a decrease in wireless performance. Since the relative position of the signal feed point and the matching component is changed, the position of the electric field can be changed, so that the signal feed point can be changed and matched during actual use. The relative position of the components is such that the position of the lowest region of the electric field is located on the side of the antenna. Therefore, by adjusting the relative position between the matching component and the signal feed point, the position voltage of the FPC passing through the side of the antenna is minimized, so that the coupling current on the LCD is minimized, and the radiant energy lost. The less it is.

It should be noted that, in the embodiment of the present invention, an electronic device may be further provided, where the electronic device includes a display component and a PCB board, and a gap exists between the display component and the PCB board, and the gap is used for placing the antenna, so that When the thickness of the electronic device is changed, the size of the electronic device is made unchanged. All of the electronic devices having the display component and the PCB can be used as the electronic device provided by the embodiment of the present invention. For example, the electronic device can be a mobile phone, a tablet computer or the like.

The above is only a specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of changes or substitutions within the technical scope of the present invention. It should be covered by the scope of the present invention. Therefore, the scope of the invention should be determined by the scope of the claims.

Claims (10)

A wearable device, characterized in that the wearable device comprises a movement component and a casing, the movement component being embedded in a cavity of the casing; the movement component comprising at least a display component, a printed circuit board A PCB has a gap between the display component and the PCB, the antenna being located within the gap. The wearable device according to claim 1, wherein the antenna comprises an antenna holder, a grounding point, a signal feeding point, and an adjusting component; Wherein the antenna holder has a routing surface and a ground plane, the routing surface is connected to the display component, the ground plane is connected to the PCB; and the signal feeding point is disposed on the ground plane, An adjusting component is disposed between the routing surface and the grounding surface, and the routing surface and the grounding surface are both connected to the grounding point; The routing surface is configured to arrange antenna traces; Positioning the adjustment member relative to a position of the signal feed point to change an electric field intensity distribution of the line surface; The signal feed point is used to feed a radio frequency signal from the ground plane to an antenna trace of the trace surface. The wearable device according to claim 2, wherein the wire surface and the ground surface are made of a metal material. The wearable device according to any one of claims 1 to 3, wherein the antenna holder has a circular, elliptical or rectangular shape in a cross-sectional shape perpendicular to a surface direction of the display member. A wearable device according to any one of claims 2 to 4, wherein the adjustment member comprises a matching member; or The adjustment component includes a plurality of matching components; the plurality of matching components are connected in parallel. The wearable device according to any one of claims 2 to 4, wherein the antenna holder is made of a non-metal material. The wearable device according to any one of claims 2 to 6, wherein the wearable device further comprises a support member for supporting the display member, the support member having a first end and a second end The first end of the support member is coupled to the display member, and the second end of the support member is coupled to the line-facing surface. The wearable device according to any one of claims 1 to 7, wherein a height of a gap between the PCB and the display member is less than or equal to a preset threshold. The wearable device according to any one of claims 1 to 8, wherein the outer casing of the wearable device is made of a metal material, and the metal outer casing has a function of reflecting energy radiated by the antenna. The wearable device according to any one of claims 1 to 9, wherein the wearable device is a smart watch or a smart bracelet.

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