WO2019091080A1

WO2019091080A1 - Electronic device

Info

Publication number: WO2019091080A1
Application number: PCT/CN2018/086901
Authority: WO
Inventors: 许春晖; 何其娟; 管康平
Original assignee: 歌尔股份有限公司
Priority date: 2017-11-08
Filing date: 2018-05-15
Publication date: 2019-05-16
Also published as: CN207652814U

Abstract

Disclosed in the present invention is an electronic device. An antenna is provided on an inner wall of an upper housing. A FPCB is connected between the upper housing and a main PCB. The part of the FPCB located between the upper housing and the main PCB is bent into two parts, i.e., a first extension part and a second extension part, which are approximately parallel to each other, and a bending part connecting the first extension part and the second extension part. A conduction part is provided between the first extension part and the second extension part. One end of the conduction part communicates with a ground terminal of the first extension part, and the other end of the conduction part communicates with a ground terminal of the second extension part. According to the present invention, the metal ground of the first extension part and the metal ground of the second extension part communicate with each other by means of the conduction part, current does not flow along the metal ground of the FPCB, and therefore, the interference of the current in the FPCB on the antenna can be greatly reduced.

Description

Electronic device

Technical field

The present invention relates to an electronic device, and more particularly to an electronic device having an antenna structure.

Background technique

With the development of technology, the volume of wearable products at this stage is getting smaller and smaller, which requires compact assembly between the various components within the product. However, the antenna in the product is easily affected by other metal devices in the vicinity. In order to solve this problem, it is often necessary to ground the metal device in order to reduce the interference of the metal device on the antenna.

In some electronic products, the housing includes an upper case and a lower case, and an FPCB board is usually used for electrical connection between the upper case and the lower case. For example, in order to facilitate assembly, one end of the FPCB board is attached to the upper case, and one end is connected to the lower case, and the original length of the FPCB board needs to be larger than the linear distance from the upper case to the lower case after assembly. When the upper and lower shells are snapped together, the FPCB board is bent in an S shape in the inner cavity of the housing. Since the FPCB board has a certain length, even if the FPCB board is grounded, the current flowing in the FPCB board still causes a large interference to the antenna signal.

Summary of the invention

It is an object of the present invention to provide an electronic device.

According to an aspect of the invention, there is provided an electronic device comprising a housing surrounded by an upper case and a lower case, and a main PCB board, an FPCB board disposed in the case, and an antenna disposed on an inner wall of the upper case The FPCB board is connected between the upper shell and the main PCB board; the portion of the FPCB board between the upper shell and the main PCB board is bent into two approximately parallel first extensions, second extensions, and connections a curved portion of the first extension portion and the second extension portion;

A conducting portion is disposed between the first extending portion and the second extending portion, and one end of the conducting portion is electrically connected to a ground end of the first extending portion, and the other end is electrically connected to a ground end of the second extending portion .

Optionally, the conductive portion is disposed away from the curved portion.

Optionally, the conductive portion is located at a middle portion of the first extension portion and the second extension portion.

Optionally, the conductive portion is approximately perpendicular to the first extension portion and the second extension portion.

Optionally, a position at which the conductive portion and the second extending portion are electrically connected is located in a region where the FPCB board is connected to the main PCB board; and the conductive portion is an elastic conductive body.

Optionally, a pin on the second extension portion opposite to the main PCB board is disposed, the pin is inserted into the main PCB board; and the other side of the second extension is provided with a complement In the strong portion, the reinforcing portion is electrically connected to the ground end of the second extending portion; and the conducting portion is electrically connected to the reinforcing portion.

Optionally, one end of the conductive portion is soldered to the exposed ground pad of the first extension portion, and the other end is in contact with the reinforcing portion.

Optionally, the elastic electrical conductor comprises an elastic material portion, a thin film layer encasing the elastic material portion, and a metal layer plated on an outer surface of the thin film layer.

Optionally, the elastic material portion is made of a silica gel or a rubber material; the thin film layer is a PI film, and the metal layer includes a copper layer.

Optionally, the antenna is a loop antenna, and an area surrounded by the antenna on the inner wall of the upper shell constitutes a connection area; and an end of the FPCB board is provided with a connection end connected to the connection area.

Optionally, the connection end is a touch module.

Optionally, the main PCB board is provided with a conductive pillar for contacting the antenna feeding point.

In the electronic device of the present invention, the length of the metal ground between the first extension portion and the second extension portion can be greatly shortened, that is, the metal ground of the first extension portion can directly pass through the metal portion of the conduction portion and the second extension portion. When turned on, the current does not need to flow along the metal ground of the FPCB board itself, thereby greatly reducing the interference of the current in the FPCB board to the antenna.

Other features and advantages of the present invention will become apparent from the Detailed Description of the <RTIgt;

DRAWINGS

The accompanying drawings, which are incorporated in FIG

1 is a schematic structural view of an electronic device of the present invention.

Figure 2 is an exploded view of Figure 1.

Figure 3 is a front elevational view of the upper casing of Figure 2.

4 is a front elevational view of the FPCB board of FIG. 2 after being bent.

Figure 5 is a front elevational view of the FPCB board of Figure 2 after deployment.

FIG. 6 is a schematic structural view of the conductive portion of FIG. 4. FIG.

Detailed ways

Various exemplary embodiments of the present invention will now be described in detail with reference to the drawings. It should be noted that the relative arrangement of the components and steps, numerical expressions and numerical values set forth in the embodiments are not intended to limit the scope of the invention unless otherwise specified.

The following description of the at least one exemplary embodiment is merely illustrative and is in no way

Techniques and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the techniques and devices should be considered as part of the specification.

In all of the examples shown and discussed herein, any specific values are to be construed as illustrative only and not as a limitation. Thus, other examples of the exemplary embodiments may have different values.

It should be noted that similar reference numerals and letters indicate similar items in the following figures, and therefore, once an item is defined in one figure, it is not required to be further discussed in the subsequent figures.

The present invention provides an electronic device having an antenna structure disposed therein such that the electronic device can communicate with an external terminal. The electronic device can be a device known to those skilled in the art, such as a Bluetooth headset, a wristband, a smart watch, a headset VR glasses, and the like. For convenience of description, the electronic device of the present invention will now be described in detail by taking a Bluetooth headset as an example.

Referring to FIG. 1 and FIG. 2, the electronic device of the present invention has a casing including an upper casing 1 and a lower casing 2 which are fastened together, and a main PCB board 5 of the earphone is disposed in the casing, the main PCB board 5 together with the earphone A sounding unit or the like may be assembled in the lower case 2, and the upper case 1 as a cover body covers the lower case 2.

The electronic device of the present invention is provided with an antenna 3 on the inner wall of the upper casing 1. Referring to Fig. 3, the antenna 3 preferably adopts a loop antenna structure which can be attached to the inner wall of the upper casing 1. The antenna 3 may be an FPC antenna, an LDS antenna, a ram antenna or the like which is well known to those skilled in the art.

For example, when the antenna 3 employs an FPC antenna or a ram antenna, the antenna 3 can be directly fixed to the inner wall of the upper casing 1 by means of a glue material, a fixing column or a method well known to those skilled in the art. When the antenna 3 adopts an LDS antenna, the antenna 3 can be formed on the inner wall of the upper casing 1 by the LDS technique, which will not be specifically described herein.

The antenna 3 needs to be connected to the main PCB board 5, for example by means of a wire or a flexible circuit board. In a preferred embodiment of the present invention, the main PCB board 5 is provided with a conductive post 50 extending toward the antenna 3, and when the upper shell 1 and the lower shell 2 are fastened together, the conductive post 50 can be connected to the antenna 3. The upper feed point contacts are mated together, thereby achieving the connection of the antenna 3 to the main PCB board 5.

The electronic device of the present invention further includes an FPCB board 6 connected between the upper case 1 and the main PCB board 5. The end of the FPCB board 6 or a position on the FPCB board 6 is electrically connected to the main PCB board 5; the other end position of the FPCB board 6 can be connected to the upper case 1 or to the upper case 1 On the component, the signal on the main PCB board 5 can be conducted to the upper casing 1 or to the components of the upper casing 1.

In a preferred embodiment of the present invention, referring to FIG. 3, the area of the inner wall of the upper casing 1 surrounded by the antenna 3 constitutes a connection area 4, which may be circular in shape, rectangular or in the field. Other shapes well known to the skilled person. The end of the FPCB board 6 is provided with a connection end 62 connected to the connection area 4, with reference to FIG. Further preferably, the connection end 62 of the FPCB board 6 is a touch module, and the shape of the touch module can match the shape of the connection area 4, and is attached to the connection area 4 of the upper case 1 so that the touch can be touched. The surface of the upper case 1 realizes control of the Bluetooth earphone.

Before the upper case 1 and the lower case 2 of the present invention are fastened, a part of the FPCB board 6 is connected to the main PCB board 5, and the other part is connected to the upper case 1. After the upper case 1 and the lower case 2 are fastened, the portion 60 of the FPCB board 6 between the upper case 1 and the main PCB board 5 is bent and can be bent into two approximately parallel firsts by control. The extending portion 600, the second extending portion 601, and the bent portion connecting the first extending portion 600 and the second extending portion 601.

Referring to FIGS. 4 and 5, a portion 60 of the FPCB board 6 between the upper case 1 and the main PCB board 5 is reciprocally bent between the upper case 1 and the main PCB board 5, and is approximately S-shaped, C-shaped or zig-zag. The first extension portion 600 is adjacent to one side of the upper case 1, and the second extension portion 601 is adjacent to one side of the main PCB board 5. The first extension 600 and the second extension 601 are connected in a transitional manner by a bend.

A conducting portion 7 is disposed between the first extending portion 600 and the second extending portion 601. One end of the conducting portion 7 is electrically connected to the ground end of the first extending portion 600, and the other end is grounded to the second extending portion 601. The terminal is turned on. In this way, the length of the ground layer between the first extending portion 600 and the second extending portion 601 can be greatly shortened, that is, the ground layer of the first extending portion 600 can be directly connected through the conductive layer 7 and the ground layer of the second extending portion 601. Together, the current does not have to flow along the metal ground of the FPCB board 6 itself, whereby the length of the formation of the FPCB board 6 can be shortened, so that the interference of the current in the FPCB board 6 to the antenna can be greatly reduced.

Further, the conductive portion 7 is approximately perpendicular to the first extending portion 600 and the second extending portion 601, so that the length of the ground layer between the first extending portion 600 and the second extending portion 601 is further shortened, and the current pair in the FPCB board 6 is reduced. Antenna interference.

In principle, the further the distance of the conduction portion 7 from the curved portion, the shorter the metal ground of the folded portion of the FPCB board 6. In a preferred embodiment of the present invention, the conductive portion 7 is located at a central portion of the first extending portion 600 and the second extending portion 601 such that the positions of the two ends of the first extending portion 600 located above can be in their own gravity. Bend down.

In a specific embodiment of the present invention, the position where the conduction portion 7 and the second extension portion 601 are electrically connected is located in a region where the FPCB board 6 is connected to the main PCB board 5. Referring to FIG. 4, a side opposite to the main PCB board 5 on the second extension portion 601 (refer to the view direction of FIG. 4, the lower side of the second extension portion 601) is provided with a pin 63 which can be combined with the main PCB board 5 are plugged together to achieve mechanical and electrical connection of the FPCB board 6 to the main PCB board 5.

Referring to FIG. 4 and FIG. 5, on the other side of the second extending portion 601 (refer to the view direction of FIG. 4, the upper side of the second extending portion 601), a reinforcing portion 61 such as a metal piece is provided to realize the FPCB board. 6 Structure reinforcement at pin 63 position. The reinforcing portion 61 may be attached to the surface of the second extending portion 601 and electrically connected to the ground end of the second extending portion 601.

The conducting portion 7 can be electrically connected to the reinforcing portion 61 to achieve conduction between the conducting portion 7 and the grounding end of the second extending portion 601. The conductive portion 7 may be welded to the reinforcing portion 61. In a preferred embodiment of the present invention, the conductive portion 7 is connected to the first extending portion 600. That is, one end of the conductive portion 7 can be connected to the exposed ground pad 602 of the first extension portion 600 by soldering, with reference to FIG. The other end of the conductive portion 7 is in contact with the reinforcing portion 61 on the second extending portion 601.

That is, the conductive portion 7 has no contact relationship with the reinforcing portion 61 on the second extending portion 601 before mounting. When the upper case 1 and the lower case 2 are fastened, the portion 60 of the FPCB board 6 between the upper case 1 and the main PCB board 5 is bent between the upper case 1 and the main PCB board 5, at this time, the conduction portion The end of the seventh end is in contact with the reinforcing portion 61 on the second extending portion 601 to achieve conduction between the conducting portion 7 and the grounding end of the second extending portion 601.

The conductive portion 7 of the present invention preferably employs an elastic conductor so that the first extending portion 600 can be supported. When the end of the conductive portion 7 and the reinforcing portion 61 on the second extending portion 601 are in a contact fit manner, the conductive portion 7 can be pressed between the upper case 1 and the main PCB board 5, thereby ensuring the guiding. The force at the time of contact between the through portion 7 and the reinforcing portion 61. In addition, when the user touches the surface of the upper case 1, the elastic conductor can be used to buffer the strength of the upper case 1 to press the FPCB board 6 and the main PCB board 5.

The elastic conductor of the present invention may be a material well known to those skilled in the art as long as it is elastic and electrically conductive. In a preferred embodiment of the invention, the elastic conductor comprises an elastic material portion 70, a film layer 71 encasing the elastic material portion 70, and a metal layer 72 plated on the outer surface of the film layer 71.

The elastic material portion 70 may be an elastic material well known to those skilled in the art such as silica gel or rubber, which can be formed by a pressing process so that the volume of the elastic material portion 70 can be controlled to be small, and the precision of the product can be ensured. Preferably, a hollow structure 73 is further provided on the elastic material portion 70 to improve the elastic deformation ability of the elastic material portion 70.

The film layer 71 may be a PI film. After the elastic material portion 70 is molded, the film layer 71 is wrapped around the outer side of the elastic material portion 70, and the metal layer 72 is plated on the surface of the film layer 71 by electroless plating. The metal layer 72 may be a copper layer, and a tin layer or a gold layer may be plated on the surface of the copper layer.

The elastic conductor of the structure is used to connect the elastic conductor to the exposed ground pad 602 of the first extension portion 600 by means of SMT (Surface Mount Technology) to ensure the bonding. Position accuracy and assembly efficiency are also high; and SMT welding method, the assembly is more robust than the traditional bonding method, and the thrust test reliability of the component is higher. In addition, the elastic conductor directly uses the metal layer 72 as a grounding medium, and foams cotton relative to other woven fabrics and filler metal particles, because the metal layer 72 has high purity, good electrical conductivity, and low internal resistance. Moreover, since the FPCB board 6 is in a floating state before assembly, the elastic conductors are in surface contact with the first extension portion 600 and the second extension portion 601, so that the balance of the FPCB board 6 after assembly is good.

While the invention has been described in detail with reference to the preferred embodiments of the present invention, it is understood that It will be appreciated by those skilled in the art that the above embodiments may be modified without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.

Claims

An electronic device comprising: a housing surrounded by an upper casing and a lower casing; and a main PCB board and an FPCB board disposed in the casing, wherein an antenna is disposed on an inner wall of the upper casing; the FPCB a board is connected between the upper case and the main PCB board; a portion of the FPCB board between the upper case and the main PCB board is bent into two approximately parallel first extension portions, a second extension portion, and the first connection a bent portion of the extension portion and the second extension portion;

A conducting portion is disposed between the first extending portion and the second extending portion, and one end of the conducting portion is electrically connected to a ground end of the first extending portion, and the other end is electrically connected to a ground end of the second extending portion .
The electronic device according to claim 1, wherein said conductive portion is disposed away from said bent portion.
The electronic device according to claim 2, wherein the conductive portion is located at a middle portion of the first extending portion and the second extending portion.
The electronic device according to any one of claims 1 to 3, wherein the conductive portion is approximately perpendicular to the first extending portion and the second extending portion.
The electronic device according to any one of claims 1 to 4, wherein a position at which the conduction portion and the second extension portion are electrically connected is located in a region where the FPCB board is connected to the main PCB board; and the conduction portion is Elastic conductor.
The electronic device according to claim 5, wherein a pin opposite to the main PCB board is disposed on the second extension portion, and the pin is inserted into the main PCB board; The other side of the second extending portion is provided with a reinforcing portion, and the reinforcing portion is electrically connected to the ground end of the second extending portion; and the conducting portion is electrically connected to the reinforcing portion.
The electronic device according to claim 6, wherein one end of the conducting portion is soldered to the exposed ground pad of the first extending portion, and the other end is in contact with the reinforcing portion.
The electronic device according to any one of claims 5 to 7, wherein the elastic conductor comprises an elastic material portion, a film layer encasing the elastic material portion, and a metal plated on an outer surface of the film layer Floor.
The electronic device according to claim 8, wherein said elastic material portion is made of a silicone rubber or a rubber material; said thin film layer is a PI film, and said metal layer comprises a copper layer.
The electronic device according to any one of claims 1 to 9, wherein the antenna is a loop antenna, and an area surrounded by an antenna on an inner wall of the upper casing constitutes a connection area; and an end of the FPCB board is disposed. There is a connection end connected to the connection area.
The electronic device according to claim 10, wherein the connection end is a touch module.
The electronic device according to any one of claims 1 to 11, wherein the main PCB board is provided with a conductive post for contact with the antenna feed point.