WO2021063255A1

WO2021063255A1 - Wearable device

Info

Publication number: WO2021063255A1
Application number: PCT/CN2020/117706
Authority: WO
Inventors: 王珅
Original assignee: 维沃移动通信有限公司
Priority date: 2019-09-30
Filing date: 2020-09-25
Publication date: 2021-04-08
Also published as: CN110534873B; CN110534873A

Abstract

Provided is a wearable device. The wearable device comprises: a main body, comprising a shell and a printed circuit board arranged inside the shell; a wearing member; and an antenna radiator, comprising: a first flexible electrically conductive plate located inside the wearing member, a second flexible electrically conductive plate formed by means of the end of the first flexible electrically conductive plate that is away from the printed circuit board being bent in the thickness direction of the wearing member, and a third flexible electrically conductive plate formed by means of the second flexible electrically conductive plate being bent and extending in the direction of the printed circuit board, wherein the third flexible electrically conductive plate is located inside the wearing member or at least partially exposed out of the outer surface of the wearing member, and the distance between the first flexible electrically conductive plate and the outer surface of the wearing member is greater than the distance between the third flexible electrically conductive plate and the outer surface of the wearing member. The antenna design of the wearable device in the present invention can prevent the influence of a human body on the antenna performance.

Description

Wearable device

Cross-references to related applications

This application claims the priority of Chinese Patent Application No. 201910939536.2 filed in China on September 30, 2019, the entire content of which is incorporated herein by reference.

Technical field

The embodiment of the present invention relates to the technical field of communication applications, in particular to a wearable device.

Background technique

With the full coverage of the 5G network, the devices supported in the future will include more types of smart products. The main goal of the 5G network is to allow end users to always be connected to the Internet and to flexibly support the use of various devices. In addition to mobile phones and tablet computers, it also includes wearable devices such as smart bracelets and smart watches. Compared to some bulky and larger mobile phones, wearable devices are smaller, easier to carry, and closer to the human body. Among many wearable devices, most users prefer wristband products that are worn for a long time. After the bracelet, watches that once only used to see the time have also joined the ranks of smart products, adding functions similar to or even more than those of mobile phones. With the support of 5G, smart watches will better meet people's needs for socializing, working, and entertainment anytime, anywhere. The prerequisite for realizing all these functions is that smart watches need to cover and support multiple wireless communication standard frequency bands including Wireless Fidelity (WiFi)/Bluetooth, Global Positioning System (GPS), 4G, and 5G.

However, because wearable devices are often small in size, their internal structural design is complex and compact, and due to the limitation of their own structural size, the antenna performance will be affected by the human body.

Summary of the invention

The embodiment of the present invention provides a wearable device to solve the problem that the antenna performance of the existing wearable device is affected by the human body.

In order to solve the above technical problems, the present invention is implemented as follows:

In the first aspect, an embodiment of the present invention provides a wearable device, including:

The main body includes a housing and a printed circuit board arranged in the housing;

A wearing piece connected with the main body;

Antenna radiator, including:

A first flexible conductive plate located inside the wearing piece;

An end of the first flexible conductive plate away from the printed circuit board, and a second flexible conductive plate formed by bending along the thickness direction of the wearing part;

A third flexible conductive plate formed by bending and extending the second flexible conductive plate toward the printed circuit board;

Wherein, the third flexible conductive plate is located inside the wearing part or is at least partially exposed on the outer surface of the wearing part, and the distance between the first flexible conductive plate and the outer surface of the wearing part is greater than that of the first flexible conductive plate. The distance between the three flexible conductive plates and the outer surface of the wearing piece, one of the first flexible conductive plate and the third flexible conductive plate is grounded, and the other is connected to the radio frequency circuit on the printed circuit board The feed end is connected.

In the above solution of the embodiment of the present invention, the antenna radiator provided on the wearing part connected to the main body of the wearable device includes: a first flexible conductive plate located inside the wearing part; The second flexible conductive plate is formed by bending one end of the flexible conductive plate away from the printed circuit board in the thickness direction of the wearing part; the second flexible conductive plate is bent and extended in the direction of the printed circuit board The third flexible conductive plate is formed; wherein the third flexible conductive plate is located inside the wearing part or is at least partially exposed on the outer surface of the wearing part, and the first flexible conductive plate is connected to the outer surface of the wearing part The surface distance is greater than the distance between the third flexible conductive plate and the outer surface of the wearing part. One of the first flexible conductive plate and the third flexible conductive plate is grounded, and the other is connected to the printed circuit. The feed end of the radio frequency circuit on the control circuit board is connected. In this way, the antenna design of the wearable device of the present invention can avoid the influence of the human body on the performance of the antenna.

Description of the drawings

FIG. 1 is one of the schematic structural diagrams of a wearable device provided by an embodiment of the present invention;

2 is the second structural diagram of a wearable device provided by an embodiment of the present invention;

3 is a schematic structural diagram of an antenna radiator of a wearable device provided by an embodiment of the present invention;

Fig. 4 is a front view of Fig. 1.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

As shown in Figures 1 to 4, the wearable device includes: a main body, including: a casing 1 and a printed circuit board 2 arranged in the casing 1; a wearing part connected to the main body; an antenna radiator 3, Including: a first flexible conductive plate 31 located inside the wearing part; a second flexible conductive plate 32 formed by bending the first flexible conductive plate 31 away from the printed circuit board 2 in the thickness direction of the wearing part; and a second flexible conductive plate The board 32 is bent and extended toward the printed circuit board 2 to form a third flexible conductive plate 33; wherein, the third flexible conductive plate 33 is located inside the wearing part (as shown in FIG. 1 and FIG. 2) or is at least partially exposed in the wearing part. The outer surface of the piece (not shown in the figure), the distance between the first flexible conductive plate 31 and the outer surface of the wearing piece is greater than the distance between the third flexible conductive plate 33 and the outer surface of the wearing piece, the first flexible conductive plate 31 and the One of the three flexible conductive plates 33 is grounded, and the other is connected to the feeding terminal 4 of the radio frequency circuit on the printed circuit board 2.

Here, the wearable device may include hardware devices such as smart watches, smart bracelets, and smart glasses.

Specifically, the wearing part is used to fix the wearable device to the part of the human body. For example, if the wearable device is a smart watch or smart bracelet, the wearing part is a wristband; if the wearable device is smart glasses, the wearing part is a frame; if the wearable device is a waist wearing device, the wearing part is a belt .

Here, the material used for the antenna radiator 3 is a flexible conductive material.

Preferably, the first flexible conductive plate 31, the second flexible conductive plate 32, and the third flexible conductive plate 33 are integrated conductive plates.

It should be noted that, in addition to the printed circuit board 2 provided inside the housing 1 of the main body, a display screen assembly is also provided. The printed circuit board 2 is also provided with several functional components, such as a processor, a data acquisition component, a communication module, and so on.

Here, the material used for the wearing part is a non-metallic material.

Here, the material used for the housing 1 of the main body of the wearable device is a metallic material or a non-metallic material. In other words, the casing 1 is a metal casing or a non-metal casing.

Specifically, an insulating medium is filled between the first flexible conductive plate 31 and the third flexible conductive plate 33.

Specifically, the wearing part includes: a first wearing part 5 and a second wearing part 6 arranged on both sides of the main body and respectively connected to the main body; wherein, the antenna radiator 3 is arranged in the first wearing part 5 and/or the second wearing part 5 Piece 6.

Preferably, the antenna radiator 3 is arranged on the first wearing part 5 or the second wearing part 6.

That is to say, the antenna radiator 3 may be arranged inside the first wearing part 5, as shown in FIG. 1, or may be arranged inside the second wearing part 6, which is not shown in the figure. Thus, the wearable device includes the antenna The antenna of the radiator 3 can cover and support multiple frequency bands.

Also, the third flexible conductive plate 33 of the antenna radiator 3 is at least partially exposed on the outer surface of the first wearing part 5, or the third flexible conductive plate 33 of the antenna radiator 3 is at least partly exposed on the outer surface of the second wearing part 6. The outer surface.

Preferably, the antenna radiator 3 includes: a first antenna radiator arranged on the first wearing part 5 and a second antenna radiator arranged on the second wearing part 6, as shown in FIG. 2, where the first antenna radiates The body and the second antenna radiator work in different frequency bands respectively, or work in the same frequency band.

It should be noted that in this implementation, the number of antenna radiators 3 is two, the antenna radiator 3 provided in the first wearing part 5 serves as the first antenna radiator, and the antenna radiator provided in the second wearing part 6 radiates Body 3 serves as a second antenna radiator.

Here, specifically, as shown in FIG. 2, one of the first flexible conductive plate and the third flexible conductive plate of the first antenna radiator of the first wearing part 5 and the radio frequency circuit on the printed circuit board 2 The first feeding terminal 7 is connected to the ground, and the other is grounded. Here, preferably, the corresponding grounding terminal is the first grounding terminal 8 of the radio frequency circuit; the first grounding terminal of the second antenna radiator arranged on the second wearing part 6 One of the flexible conductive plate and the third flexible conductive plate is connected to the second feeding terminal 9 of the radio frequency circuit on the printed circuit board 2, and the other is grounded. Here, preferably, the corresponding ground terminal is the radio frequency circuit The second ground terminal 10.

It should be noted that the wearable device in this implementation has two antennas including the antenna radiator 3. In this way, the two antennas can respectively cover and support different frequency bands to increase the frequency bands that can be covered, or can cover some of them at the same time. Frequency band to achieve diversity or Multiple Input Multiple Output (MIMO) communication functions, thereby improving the quality of wireless communication.

Preferably, as shown in FIG. 1, the grounding terminal 11 grounded to one of the first flexible conductive plate 31 and the third flexible conductive plate 33 and the flexible conductive plate between the feeding terminal 4 The length is one-half wavelength of the lowest operating frequency of the antenna.

That is to say, the height of the antenna of the wearable device including the antenna radiator 3 is one-quarter wavelength of the fundamental mode, and the total length of the antenna is one-half wavelength of the fundamental mode, which is the mirror image of the half-wavelength folded dipole antenna In this way, while maintaining the performance of the antenna, the antenna size is reduced, and multiple high-order modes can be excited to cover multiple required frequency bands.

Optionally, the first flexible conductive plate 31 and the third flexible conductive plate 33 are parallel.

Optionally, the second flexible circuit board 32 is perpendicular to the first flexible conductive board 31 and the third flexible conductive board 33 respectively.

Specifically, as shown in FIG. 3, a first conductive sheet 34 is provided at one end of the third flexible conductive plate 33 away from the second flexible conductive plate 32; an end of the first flexible conductive plate 31 away from the second flexible conductive plate 32 is provided with The second conductive sheet 35.

Further, the housing 1 of the wearable device is provided with a first gap and a second gap corresponding to the position where the wearer is connected; the first conductive sheet 34 passes through the first gap and is connected to the power feeding terminal 4; the second conductive sheet 35 penetrates It is connected to the ground terminal 11 through the second gap.

Here, both the first conductive sheet 34 and the second conductive sheet 35 are copper tongues. The first conductive sheet 34, that is, the power feeding tongue, is connected to the power feeding terminal 4 through a first gap; the second conductive sheet, 35, that is, the ground tongue, is connected to the ground terminal 11 through a second gap.

Optionally, the first conductive sheet 34 is fixedly connected to the feeding terminal 4 through a first conductive screw, and the second conductive sheet 35 is fixedly connected to the ground terminal 11 through a second conductive screw.

It should be noted that the above-mentioned antenna radiator 3 has a width and is folded into upper and lower layers, that is, the antenna radiator is a folded structure, and the wearable device includes an antenna of the antenna radiator 3 (ie, a folded grounded antenna form) to make electromagnetic waves go up and down The two layers of conductive materials (that is, the first flexible conductive plate 31 and the third flexible conductive plate 33) are excited, as shown in FIG. 4, and spread to the left and right sides of the wearable device. In this way, when the user wears the wearable device, electromagnetic waves can avoid the human arm, which can minimize the adverse effect of the human wrist on the antenna on the wearable device, so that the antenna performance of the wearable device does not change much when the wearable device is worn or not. , To ensure antenna performance.

In order to cover more frequency bands, as an optional implementation, the number of antenna radiators 3 is at least two; at least two antenna radiators are arranged side by side, and the length direction of the at least two antenna radiators is the same as the length of the wearing part. The directions are parallel.

More specifically, at least two antenna radiators, that is, two or more antenna radiators can be arranged side by side on the first wearing part, or can be arranged side by side on the second wearing part, and can also be arranged between the first wearing part and the second wearing part. At least two radiators are arranged side by side in the wearing parts.

It should be noted that when at least two antenna radiators are arranged side by side on the wearing part, the width of the antenna radiator is smaller than the width of the antenna radiator when one antenna radiator is arranged on the wearing part.

Here, when the number of the antenna radiator 3 is one, preferably, the width of the antenna radiator 3 is as wide as possible, that is, the width of the antenna radiator 3 is slightly smaller than the width of the wearing piece.

It should be noted that a wider antenna radiator can make the area of the antenna larger, thereby obtaining a wider antenna resonance bandwidth.

As an optional implementation manner, the housing 1 is a metal housing; the ground layer of the printed circuit board 2 is electrically connected to the housing 1 through a grounding device 12.

In the wearable device of the embodiment of the present invention, the antenna radiator provided on the wearing part connected to the main body of the wearable device includes: a first flexible conductive plate located inside the wearing part; The second flexible conductive plate is formed by bending one end of the flexible conductive plate away from the printed circuit board in the thickness direction of the wearing part; the second flexible conductive plate is bent and extended in the direction of the printed circuit board The third flexible conductive plate is formed; wherein the third flexible conductive plate is located inside the wearing part or is at least partially exposed on the outer surface of the wearing part, and the first flexible conductive plate is connected to the outer surface of the wearing part The surface distance is greater than the distance between the third flexible conductive plate and the outer surface of the wearing part. One of the first flexible conductive plate and the third flexible conductive plate is grounded, and the other is connected to the printed circuit. The feed end of the radio frequency circuit on the circuit board is connected. In this way, the antenna design of the wearable device of the present invention can avoid the influence of the human body and the metal shell of the main body on the antenna performance, and can cover the antenna performance under the premise of ensuring the antenna performance. Supports multiple frequency bands to facilitate the interconnection and communication of multiple wireless communication standards with external networks.

The embodiments of the present invention are described above with reference to the accompanying drawings, but the present invention is not limited to the above-mentioned specific embodiments. The above-mentioned specific embodiments are only illustrative and not restrictive. Those of ordinary skill in the art are Under the enlightenment of the present invention, many forms can be made without departing from the purpose of the present invention and the scope of protection of the claims, which all fall within the protection of the present invention.

Claims

A wearable device, characterized in that it comprises:

The main body includes a housing and a printed circuit board arranged in the housing;

A wearing piece connected with the main body;

Antenna radiator, including:

A first flexible conductive plate located inside the wearing piece;

An end of the first flexible conductive plate away from the printed circuit board, and a second flexible conductive plate formed by bending along the thickness direction of the wearing part;

A third flexible conductive plate formed by bending and extending the second flexible conductive plate toward the printed circuit board;

Wherein, the third flexible conductive plate is located inside the wearing part or is at least partially exposed on the outer surface of the wearing part, and the distance between the first flexible conductive plate and the outer surface of the wearing part is greater than that of the first flexible conductive plate. The distance between the three flexible conductive plates and the outer surface of the wearing piece, one of the first flexible conductive plate and the third flexible conductive plate is grounded, and the other is connected to the radio frequency circuit on the printed circuit board The feed end is connected.
The wearable device according to claim 1, wherein an insulating medium is filled between the first flexible conductive plate and the third flexible conductive plate.
The wearable device according to claim 1, wherein the wearing part comprises: a first wearing part and a second wearing part which are arranged on both sides of the main body and are respectively connected to the main body;

Wherein, the antenna radiator is arranged on the first wearing part and/or the second wearing part.
The wearable device according to claim 3, wherein the antenna radiator comprises: a first antenna radiator arranged on the first wearing part and a second antenna radiator arranged on the second wearing part body;

Wherein, the first antenna radiator and the second antenna radiator work in different frequency bands respectively; or, work in the same frequency band.
The wearable device according to claim 1, wherein a flexible conductive plate between a ground terminal grounded to one of the first flexible conductive plate and the third flexible conductive plate and the power feeding terminal The length of is half the wavelength of the lowest operating frequency of the antenna.
The wearable device according to claim 1, wherein the first flexible conductive plate is parallel to the third flexible conductive plate.
The wearable device according to claim 1, wherein the second flexible circuit board is perpendicular to the first flexible conductive board and the third flexible conductive board, respectively.
The wearable device according to claim 1, wherein the number of the antenna radiator is at least two;

At least two of the antenna radiators are arranged side by side, and the length direction of the at least two antenna radiators is parallel to the length direction of the wearing part.
The wearable device according to claim 1, wherein the housing is a metal housing;

The ground layer of the printed circuit board is electrically connected to the casing through a grounding device.