CN211350956U

CN211350956U - Mobile terminal

Info

Publication number: CN211350956U
Application number: CN201921553749.3U
Authority: CN
Inventors: 邹梦若; 刘杰; 潘永伟
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2019-09-18
Filing date: 2019-09-18
Publication date: 2020-08-25
Anticipated expiration: 2029-09-18

Abstract

The application provides a mobile terminal to under the prerequisite that can improve mobile terminal's antenna performance, guarantee mobile terminal's shock resistance. Mobile terminal includes metal frame, filling glue and stiffening plate, wherein: the metal frame comprises a first frame, and a first gap is formed in the first frame; the reinforcing plate is arranged corresponding to the first gap and arranged on the inner side of the first frame; the filling glue comprises a first part and a second part, wherein the first part is used for filling the first gap, and the second part is filled between the first frame and the reinforcing plate.

Description

Mobile terminal

Technical Field

The application relates to the technical field of mobile terminals, in particular to a mobile terminal.

Background

With the development of mobile terminal technology, mobile terminal devices such as mobile phones and tablet computers generally have multiple wireless communication capabilities such as cellular communication, WiFi, bluetooth, etc., and therefore, the mobile terminal devices need to be configured with multiple antennas or antennas with multiple resonant frequencies to cover multiple operating frequency bands of wireless communication. In the prior art, the design that the metal frame of the mobile terminal is used as the antenna radiator is increasingly popularized, and one or more gaps are often formed in the metal frame to form a plurality of antenna radiators when the antenna radiator is specifically arranged.

Disclosure of Invention

The application provides a mobile terminal for under the prerequisite that can improve mobile terminal's antenna performance, guarantee mobile terminal's shock resistance.

In a first aspect, the present application provides a mobile terminal, which includes a metal frame, a filling adhesive, and a reinforcing plate, where the metal frame may also serve as an antenna radiator of the mobile terminal, and when the mobile terminal is specifically configured, the metal frame includes a first frame, and a first gap is formed in the first frame; the reinforcing plate is arranged on the inner side of the first frame and corresponds to the first gap on the first frame so as to reinforce the slotted area of the first frame; when specifically setting up the filled glue, the filled glue can be including filling in the first part in first gap and filling in the second part between first frame and stiffening plate, can be with the metal section insulating connection of first gap both sides through the first part to guarantee the continuity of first frame, improve the intensity of metal frame, simultaneously, can be connected first frame and stiffening plate as a whole through the second part, thereby can further improve the intensity of metal frame.

In the center subassembly that this application embodiment provided, when utilizing the metal frame to form mobile terminal's antenna radiator, can set up the gap on the first frame of metal frame to through stiffening plate and filled glue to the regional reinforcement that cracks of first frame, thereby both can guarantee center subassembly's shock resistance intensity, can effectively utilize the huge space on the first frame again, help making mobile terminal's antenna cover more operating bands, improve mobile terminal's antenna performance.

When the opening position of the first gap is set, the first gap may be specifically set at the center of the first frame or an area close to the center of the first frame, so as to further fully utilize the space on the first frame.

In a specific embodiment, the first slot may divide the metal frame into two metal segments located at two sides of the metal frame, and at least one metal segment may be used to form an antenna radiator of the mobile terminal.

When the position of the reinforcing plate is specifically set, for two sections of metal sections located on two sides of the first gap, the two sections of metal sections respectively comprise a first section close to the first gap and a second section far away from the first gap, and the reinforcing plate is arranged corresponding to the first section of the two sections of metal sections, so that the first frame is effectively reinforced.

In a specific embodiment, the mobile terminal further includes a main board, a feeding point and a grounding point are disposed on the main board corresponding to each metal section forming the antenna radiator, and the metal section is electrically connected to the feeding line and the grounding line at the corresponding feeding point and grounding point, respectively. For the metal segments positioned at both sides of the first gap, the feeding point and the grounding point can be respectively and electrically connected with the second segment of the metal segment.

When the second segment of the metal segment is electrically connected with the feeding point and the grounding point, the mobile terminal further comprises a first conductor and a second conductor, and when the mobile terminal is specifically arranged, the first conductor is used for electrically connecting the second segment of the metal segment with the feeding point, and the second conductor is used for electrically connecting the second segment of the metal segment with the grounding point. With this design, the reliability of the electrical connection between the metal segment and the feeder and ground wires can be ensured.

The method comprises the following steps that a first conductor and a second conductor are specifically arranged, the two conductors can be in the form of conductive elastic sheets respectively, each conductive elastic sheet comprises a first bending part and a second bending part connected with the first bending part, and an included angle between the first bending part and the second bending part is smaller than 180 degrees; the first bending part of the first conductor is fixed on the inner wall of the second section, and the second bending part of the first conductor extends towards one side far away from the inner wall of the second section and is electrically connected with the feeding point; the first bending part of the second conductor is fixed on the inner wall of the second section, and the second bending part of the second conductor extends towards one side far away from the inner wall of the second section and is electrically connected with the grounding point. In the scheme, the first bending part of the first conductor is in surface connection with the second section, and the first bending part of the second conductor is in surface connection with the second section, so that the contact area is large, and the electric connection reliability is high.

The first bending part of the first conductor and the inner wall of the second section can be fixedly connected in a welding mode and electrically conducted, and the first bending part of the second conductor and the inner wall of the second section can also be fixedly connected in a welding mode and electrically conducted.

In addition, in order to further improve the reliability of the electrical connection between the second bent portion of the first conductor and the feeding point, an included angle between the second bent portion of the first conductor and the first bent portion thereof may be set to 90 degrees, and when the first conductor is fixed, the first bent portion of the first conductor may be disposed in parallel with the first frame, and the second bent portion of the first conductor may be disposed in parallel with the main board of the mobile terminal.

Similarly, the included angle between the second bending portion of the second conductor and the first bending portion thereof may also be set to 90 degrees, and when the second conductor is fixed, the first bending portion of the second conductor may be arranged in parallel with the first frame, and the second bending portion of the second conductor may be arranged in parallel with the main board of the mobile terminal, so as to realize positive voltage connection between the second bending portion of the second conductor and the ground point on the main board.

In order to improve the structural stability of the first conductor and the second conductor, the filling adhesive further comprises a third part and a fourth part, wherein the third part is arranged on one side of the second bent part of the first conductor, so that the second bent part of the first conductor can be borne on the third part, and the fourth part is arranged on one side of the second sheet body of the second bent part, so that the second bent part of the second conductor can be borne on the fourth part; at this time, the feeding point is connected to the second bent portion of the first conductor at a positive voltage on the side away from the third portion, and the ground point is connected to the second bent portion of the second conductor at a positive voltage on the side away from the fourth portion.

The material of the first conductor and the second conductor is not limited, and a metal material with good conductivity, such as copper, can be specifically used. In addition, the first part, the second part, the third part and the fourth part of the filling glue can be integrally formed by injection molding, so that the manufacturing process of the middle frame assembly is simplified.

In a specific embodiment, the metal frame further includes a second frame, the length of the second frame is smaller than the length of the first frame, and in order to enable the antenna of the mobile terminal to cover more operating frequency bands, the second frame is further provided with a second slot. When specifically setting up, two second gaps specifically can be seted up to the second frame, and these two second gaps can be close to the both ends setting of second frame respectively to reduce the influence to the intensity of metal frame.

Drawings

Fig. 1 is a schematic structural diagram of a metal bezel according to an embodiment of the present application;

FIG. 2 is an enlarged view taken at A in FIG. 1;

FIG. 3 is a schematic view of a partial structure of a frame assembly according to an embodiment of the present disclosure;

FIG. 4 is a schematic view of a portion of a frame assembly according to another embodiment of the present application;

FIG. 5 is a partial cross-sectional view of a frame assembly at a first conductor in an embodiment of the present application;

FIG. 6 is a partial cross-sectional view of a frame assembly at a second conductor in an embodiment of the present application;

FIG. 7 is a schematic view of a partial structure of an underfill according to an embodiment of the present application;

fig. 8 is a schematic partial structure diagram of a first frame according to an embodiment of the present application.

Reference numerals:

10-a metal frame; 11-a first frame; 12-a second frame; 13-a metal section; 14-a first gap; 15-a second gap;

20-a stiffening plate; 131-a first segment; 132-a second section; 30-filling glue; 31-a first part; 32-a second portion;

40-feeding point; a 50-ground point; 60-a first conductor; 70-a second conductor; 61-a first bend; 62-a second bend;

33-a third portion; 34-fourth section; 80-a metal substrate; 16-a third gap; 35-fifth part.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more clear, the present application will be further described in detail with reference to the accompanying drawings.

For the convenience of understanding the mobile terminal provided in the embodiments of the present application, an application scenario thereof is first described below. The mobile terminal provided by the embodiment of the application can be a mobile phone, a tablet computer or a notebook computer and other common terminals in the prior art. When the metal frame is used as an antenna radiator of the mobile terminal, a gap is usually formed in the metal frame to isolate adjacent antenna radiators so as to reduce mutual interference between antennas, but the formation of the gap may cause a reduction in strength of the metal frame. In the prior art, in order to reduce the influence of the gap on the strength of the metal frame, the gap is often only opened on a shorter pair of frames of the metal frame, and the longer pair of frames cannot be fully utilized, so that the number of the gaps which can be opened is relatively small, the number of antenna radiators formed by the metal frame is also relatively small, and the working frequency band which can be covered by the antenna of the mobile terminal is limited. Based on this, the embodiment of the present application provides a mobile terminal, when an antenna radiator is formed by using a metal frame of the mobile terminal, a gap may be opened on a pair of longer frames of the metal frame on the premise of ensuring the strength of the mobile terminal, so that a huge space on the longer frames is effectively utilized, which is helpful for enabling an antenna of the mobile terminal to cover more working frequency bands, and improves the antenna performance of the mobile terminal.

First, the noun concept related to the orientation referred to in the embodiments of the present application will be briefly described. In the embodiment of the present application, the inner side of a component may be understood as a side hidden inside the mobile terminal, the inner wall of a component may be understood as a wall surface hidden inside the mobile terminal, and the back side of a component may be understood as a side facing away from the screen of the mobile terminal.

Referring to fig. 1, in the mobile terminal provided in the embodiment of the present application, the metal frame 10 includes a pair of first frames 11 and a pair of second frames 12, where the first frames 11 extend along a first direction (i.e., a y direction), the second frames extend along a second direction (i.e., an x direction), and a length of the first frames 11 is greater than a length of the second frames 12, it can be understood that the first direction is a length direction of the mobile terminal, and the second direction is a width direction of the mobile terminal. When the metal frame 10 is used as an antenna radiator of a mobile terminal, one or more slits may be formed in the metal frame 10, the slits divide the metal frame 10 into two or more spaced metal segments 13, and the metal segments 13 may be formed into antenna radiators for implementing different operating frequency bands.

In specific arrangement, please refer to fig. 1 again, the gap formed by dividing the metal frame 10 may be formed on the first frame 11 or the second frame 12, and for convenience of description, the gap formed on the first frame 11 is referred to as a first gap 14, and the gap formed on the second frame 12 is referred to as a second gap 15. In the embodiment of the present application, a second gap 15 may be formed on one of the second frames 12 of the metal frames 10, or two second gaps 15 may be formed on two second frames 12, and, as shown in fig. 1, two second gaps 15 may be formed on each second frame 12, so as to further increase the number of the metal segments 13 formed by the metal frames 10, thereby facilitating the antenna of the mobile terminal to cover more operating frequency bands. In specific implementation, the two second slits 15 may be respectively disposed near two ends of the second frame 12, that is, the two second slits 15 are respectively located near two corners of the metal frame 10, and the influence on the strength of the metal frame 10 is relatively small.

For two first frames 11 having a large influence on the overall strength of the metal frame 10, when the first gap 14 is formed, the first gap 14 may be formed only on one first frame 11, of course, in order to enable the antenna of the mobile terminal to cover more operating frequency bands, the first gaps 14 may be formed on the two first frames 11, and when the first gaps 14 are formed, the first gaps 14 may be specifically formed at the center of the first frames 11 or in an area near the center of the first frames 11 to extend the distance from the second gaps 15. The center of the first frame can be understood as a position on the first frame, which is equidistant from the second frames on two adjacent sides.

Referring to the embodiment shown in fig. 1, two first frames 11 are respectively provided with a first gap 14, two second frames 12 are respectively provided with two second gaps 15, the metal frame 10 is divided into six metal segments 13 through the gaps, and if the six metal segments 13 are respectively used as antenna radiators of the mobile terminal, the antenna of the mobile terminal can cover at least six working frequency bands, such as WiFi frequency bands, GPS frequency bands, LB/MB/HB frequency bands, and the like, especially, the metal segments on the first frame on both sides of the first gap can also be used as antenna radiators of a 5G antenna.

Taking one of the first frames 11 with the first slits 14 as an example, in order to ensure the strength of the first frame 11, referring to fig. 2 and 3, in this embodiment of the application, the mobile terminal further includes a reinforcing plate 20, where the reinforcing plate 20 is disposed inside the first frame 11 and is disposed corresponding to a region of the first frame 11 with the first slits 14, specifically, for two metal segments 13 located at two sides of the first slits 14, each metal segment 13 can be regarded as including a first segment 131 close to the first slits 14 and a second segment 132 far from the first slits 14, and the reinforcing plate 20 is disposed corresponding to the first segment 131 of each metal segment 13, so as to reinforce the slit region of the first frame 11.

As shown in fig. 2 and fig. 3, the mobile terminal further includes an underfill 30, where the underfill 30 includes a first portion 31 and a second portion 32, the first portion 31 is filled in the first gap 14, and the second portion 32 is filled between the first frame 11 and the reinforcing plate 20. By adopting the design, on one hand, the two metal sections 13 at two sides of the first gap 14 can be connected in an insulating way through the first part 31, so that the performance of the antenna is not hindered, the continuity of the first frame 11 can be ensured, and the strength of the metal frame 10 is improved; on the other hand, the first bezel 11 and the reinforcing plate 20 can be integrally connected by the second portion 32, so that the impact strength of the metal bezel 10 can be further improved.

When the antenna radiator formed by the metal segment 13 is electrically connected to the feeder line and the ground line of the main board of the mobile terminal, respectively, the metal segment 13 formed with the antenna radiator on each segment of the main board of the mobile terminal is further provided with a feeding point 40 and a ground point 50, and the metal segment 13 and the feeder line and the ground line are electrically connected at the corresponding feeding point 40 and the ground point 50, respectively. In a specific arrangement, for the metal segments 13 located at both sides of the first gap, since the first segment of the metal segment is covered by the reinforcing plate 20, the feeding point 40 and the grounding point 50 can be electrically connected to the second segment 132 of the metal segment 13, respectively, and for the metal segment located on the second frame, the corresponding feeding point and grounding point can be directly connected to both ends of the metal segment. The following takes the metal segments located at both sides of the first slot as an example to specifically describe the electrical connection manner between the metal segments and the feeding point and the grounding point.

As shown in fig. 4 and 5, the mobile terminal further includes a first conductor 60 and a second conductor 70, and the metal segment 13 forming the antenna radiator may be electrically connected to the feeding point 40 and the ground point 50 through the first conductor 60 and the second conductor 70, respectively. When the arrangement is specific, one end of the first conductor 60 is electrically connected to the second section 132 of the metal section 13, and the other end is used for electrically connecting to the feeding point 40 on the motherboard; similarly, one end of the second conductor 70 is electrically connected to the second section 132 of the metal segment 13, and the other end is used for electrically connecting to the ground point 50 on the motherboard. The first conductor 60 and the second conductor 70 may be made of a metal material with good conductivity, such as copper. With this design, the reliability of the electrical connection between the metal segment 13 and the feeding point 40 and the ground point 50 can be ensured. In this embodiment, when the antenna comprising the antenna radiator and the first and

second conductors

60, 70 is in operation, current flows from the feed line to the feed point 40, through the first conductor 60 at the feed point 40 to the second segment 132, through the second segment 132 to the second conductor 70, and finally to ground along the ground line at the ground point 50.

When the first conductor 60 and the second conductor 70 are specifically provided, the two conductors may adopt various structural forms such as a lead wire, a flexible circuit board or a printed metal layer according to the internal arrangement of the mobile terminal, as long as the metal segment 13 can be electrically connected with the feeding point 40 and the grounding point 50 on the main board. Referring to fig. 5 and 6, in an embodiment of the present application, the two conductors may respectively take the form of a conductive elastic sheet having a bending structure, the conductive elastic sheet may include a first bending portion 61 and a second bending portion 62 connected to the first bending portion 61, the second bending portion 62 is bent with respect to the first bending portion 61, that is, an included angle between the first bending portion 61 and the second bending portion 62 is less than 180 degrees, when the first bending portion 61 of the first conductor 60 is fixed to an inner wall of the second section 132, the second bending portion 62 of the first conductor 60 extends toward a side away from the inner wall of the second section 132, and the second bending portion 62 of the first conductor 60 is used for electrically connecting to the feeding point 40; similarly, the first bent portion 61 of the second conductor 70 is fixed to the inner wall of the second section 132, and the second bent portion 62 of the second conductor 70 also extends toward a side away from the inner wall of the second section, the second bent portion 62 of the second conductor 70 being for electrical connection with the ground point 50. In this embodiment, the first bent portion 61 of the first conductor 60 and the second segment 132 can be connected by welding, and the two are in surface connection, so that the contact area is large, and the reliability is high; similarly, the first bent portion 61 of the second conductor 70 and the second segment 132 may be connected by welding, and the connection form is also surface connection, so that the reliability is high.

In addition, in order to further improve the reliability of the electrical connection between the second bent portion 62 of the first conductor 60 and the feeding point, as shown in fig. 5, an included angle between the second bent portion 62 of the first conductor 60 and the first bent portion 61 thereof may be set to 90 degrees, and when the first conductor 60 is fixed, the first bent portion 61 of the first conductor 60 may be disposed in parallel with the first frame, and the second bent portion 62 of the first conductor 60 may be disposed in parallel with the main board of the mobile terminal, so that the second bent portion 62 of the first conductor 60 and the feeding point 40 on the main board may realize a positive voltage connection, and thus the reliability of the electrical connection between the two may be significantly improved. Similarly, referring to fig. 6, the angle between the second bent portion 62 of the second conductor 70 and the first bent portion 61 thereof may also be set to 90 degrees, and when the second conductor 70 is fixed, the first bent portion 61 of the second conductor 70 may be disposed in parallel with the first frame, while the second bent portion 62 of the second conductor 70 is disposed in parallel with the main board of the mobile terminal, so as to achieve positive voltage connection of the second bent portion of the second conductor with the ground point 50 on the main board.

In the above embodiment, in order to improve the structural stability of the first conductor 60 and the second conductor 70, referring to fig. 5, 6 and 7, the underfill 30 further includes a third portion 33 and a fourth portion 34 corresponding to the first conductor 60 and the second conductor 70, respectively, wherein the third portion 33 is disposed on one side of the second bent portion 62 of the first conductor 60 to support the second bent portion 62 of the first conductor 60, and the fourth portion 34 is disposed on one side of the second bent portion 62 of the second conductor 70 to support the second bent portion 62 of the second conductor 70. Thus, the second bent portion 62 of the first conductor 60 can be carried on the third portion 33, and the feeding point 40 is in positive pressure connection with the side of the second bent portion 62 of the first conductor 60 away from the third portion 33, so that the contact reliability is high; the second bent portion 62 of the second conductor 70 can be carried on the fourth portion 34, and the grounding point 50 is positively connected to a side of the second bent portion 62 of the second conductor 70 away from the fourth portion 34, so that the contact reliability is high.

It should be noted that, in this embodiment of the application, the mobile terminal may further include a metal substrate, the metal substrate is disposed on a back side of the metal frame, and the metal substrate is connected to the two first frames and the two second frames, respectively, a hole-shaped or groove-shaped structure for mounting some components of the mobile terminal may be formed on the metal substrate, and the components may be a battery, a camera module, or a circuit board, etc. It will be appreciated that, as shown in fig. 5, 6 and 8, for the metal segments 13 forming the antenna radiator, a gap should also be provided between these metal segments 13 and the metal substrate 80 to avoid the metal substrate 80 interfering with the performance of the antenna, and for the sake of convenience, we refer to this gap as the third gap 16. At this time, in order to ensure the structural strength of the metal frame, the filling adhesive further includes a fifth portion 35 filled in the third gap 16, it should be noted that each portion of the filling adhesive may be integrally injection-molded, so as to simplify the manufacturing process of the middle frame assembly.

When the mobile terminal further includes the metal substrate 80, the third portion 33 and the fourth portion 34 filled with the adhesive may be respectively disposed on the metal substrate 80, so that the third portion 33 and the fourth portion 34 may not only reliably support the first conductor 60 and the second conductor 70, but also isolate the feeding point 40 and the grounding point 50 from the metal substrate 80, thereby ensuring a clearance area of the antenna, and thus greatly improving the performance of the antenna.

To sum up, in the mobile terminal that this application embodiment provided, when utilizing the metal frame to form mobile terminal's antenna radiator, can set up the gap on the longer first frame of metal frame to seam the region through stiffening plate and filled glue to first frame and carry out the reinforcement, thereby both can guarantee the impact strength of center subassembly, can effectively utilize the huge space on the first frame again, help making mobile terminal's antenna cover more operating bands, improve mobile terminal's antenna performance.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. The utility model provides a mobile terminal, its characterized in that, mobile terminal includes metal frame, filled glue and stiffening plate, wherein:

the metal frame comprises a first frame, and a first gap is formed in the first frame;

the reinforcing plate is arranged corresponding to the first gap, and the reinforcing plate is arranged on the inner side of the first frame;

the filling adhesive comprises a first part and a second part, wherein the first part is used for filling the first gap, and the second part is filled between the first frame and the reinforcing plate.

2. The mobile terminal of claim 1, wherein the first slot opens at an area near a center of the first bezel; or the first gap is arranged in the center of the first frame.

3. The mobile terminal of claim 1, wherein the first slot divides the metal bezel into two metal segments located at two sides of the first slot, at least one of the metal segments being used to form an antenna radiator of the mobile terminal.

4. The mobile terminal of claim 3, wherein the metal segment includes a first segment proximate to the first gap and a second segment distal from the first gap, the stiffener being disposed in correspondence with the first segment of the metal segment of each segment.

5. The mobile terminal of claim 4, further comprising a main board on which a feeding point and a grounding point are provided corresponding to each of the metal segments forming the antenna radiator, the feeding point and the grounding point being electrically connected to the second segments of the metal segments, respectively, for the metal segments located at both sides of the first slot.

6. The mobile terminal of claim 5, further comprising a first conductor to electrically connect the second section of the metal segment with the feed point and a second conductor to electrically connect the second section of the metal segment with the ground point.

7. The mobile terminal of claim 6, wherein the first conductor and the second conductor are each a conductive dome, the conductive dome including a first bent portion and a second bent portion, an included angle between the first bent portion and the second bent portion being less than 180 degrees;

the first bending part of the first conductor is fixed on the inner wall of the second section, and the second bending part of the first conductor extends towards one side far away from the inner wall of the second section and is electrically connected with the feeding point;

the first bending part of the second conductor is fixed on the inner wall of the second section, and the second bending part of the second conductor extends towards one side far away from the inner wall of the second section and is electrically connected with the grounding point.

8. The mobile terminal of claim 7, wherein the first bending portion is disposed parallel to the first bezel, and the second bending portion is disposed parallel to the main board.

9. The mobile terminal of claim 7, wherein the underfill further comprises a third portion and a fourth portion; the third part is arranged on one side of the second bending part of the first conductor, the second bending part of the first conductor is borne on the third part, and the feeding point is electrically connected with one side, away from the third part, of the second bending part of the first conductor;

the fourth portion is disposed on one side of a second bent portion of the second conductor, the second bent portion of the second conductor is supported on the fourth portion, and the ground point is electrically connected to one side of the second bent portion of the second conductor, which is away from the fourth portion.

10. The mobile terminal according to any one of claims 1 to 9, wherein the metal frame further includes a second frame, a length of the second frame is smaller than a length of the first frame, and a second gap is formed in the second frame.