WO2020228793A1

WO2020228793A1 - Antenna assembly, middle frame assembly, and mobile terminal

Info

Publication number: WO2020228793A1
Application number: PCT/CN2020/090369
Authority: WO
Inventors: 王磊; 毛维华; 黄波; 吕仁
Original assignee: 华为技术有限公司
Priority date: 2019-05-15
Filing date: 2020-05-14
Publication date: 2020-11-19
Also published as: CN110212287A

Abstract

Embodiments of the present application relate to the technical field of antennas, and provide an antenna assembly, a middle frame assembly, and a mobile terminal. When a slot is formed on a housing to form an antenna, the probability of reducing the stiffness of the housing can be reduced. The antenna assembly comprises a bearing plate, at least two radiators, and at least one reinforcing rib. The at least two radiators are disposed on the periphery of the bearing plate, and a part of the radiator is connected to the bearing plate. There is an antenna slot between two adjacent radiators. The at least one reinforcing rib is connected to the bearing plate. The vertical projection of at least part of one reinforcing rib on the radiator overlaps the position of one antenna slot. In view of the above, the vertical projection of at least part of one reinforcing rib on the radiator overlaps the position of one antenna slot.

Description

Antenna component, middle frame component and mobile terminal

This application claims the priority of the Chinese patent application filed with the State Intellectual Property Office of China with the application number 201910407979.7, and the Chinese patent application with the title of "an antenna assembly, middle frame assembly and mobile terminal" on May 15, 2019 Priority, the entire content of which is incorporated in this application by reference.

Technical field

This application relates to the field of antenna technology, and in particular to an antenna assembly, a middle frame assembly and a mobile terminal.

Background technique

With the rapid development of communication technology, users can implement functions such as calling, surfing the Internet, and playing games through the antenna used for communication in the mobile terminal.

Currently, a broken slit can be made on a part of the housing of the mobile terminal, so that the broken part of the housing forms an antenna. However, the above-mentioned disconnected part will destroy the continuity of the shell and reduce the rigidity of the shell.

Summary of the invention

The embodiments of the present application provide an antenna assembly, a middle frame assembly, and a mobile terminal. When a slot can be formed on the housing to form an antenna, the probability of reducing the stiffness of the housing is reduced.

In order to achieve the foregoing objectives, the following technical solutions are adopted in the embodiments of this application:

The first aspect of the embodiments of the present application provides an antenna assembly. The antenna assembly includes a carrying plate, at least two radiators and at least one reinforcing rib. Wherein, at least two radiators are arranged on the periphery of the carrier board, and a part of the radiators are connected with the carrier board. There is an antenna slot between two adjacent radiators. At least one reinforcing rib is connected with the carrying plate. The vertical projection of at least a part of a stiffener on the radiator overlaps the position of an antenna slot. It can be seen from the above that the vertical projection of at least a part of a reinforcing rib on the radiator overlaps the position of an antenna slot. In this way, the position of a reinforcing rib can be made to correspond to the position of an antenna slot on the frame. The reinforcing rib is used to strengthen the rigidity of the frame at the antenna slot corresponding to its position.

Optionally, the carrying board includes a first surface for carrying the circuit board. The reinforcing rib includes the first sub-part. The first sub-part is connected with the first surface of the supporting board and protrudes from the first surface. In this case, the first sub-portion protruding from the first surface of the supporting board may correspond to the position of an antenna slot, so that the rigidity of the frame at the antenna slot corresponding to the position can be enhanced.

Optionally, the carrying plate includes a second surface facing away from the first surface. The stiffener also includes a second sub-part. The second sub-part is connected with the second surface of the supporting board and protrudes from the second surface. In this case, the first sub-portion of the ribs extends in a direction away from the first surface, and the second sub-portion extends in a direction away from the second surface. In this way, the size of the stiffener in the direction perpendicular to the first surface of the load-bearing plate can be increased, so that the stiffness of the stiffener can be further improved to achieve the purpose of improving the stiffness of the entire middle frame assembly.

Optionally, the reinforcing rib further includes a third sub-part connected with the second sub-part. The third sub-portion is located on the side where the second surface of the carrier board is located, and covers at least a part of the radiator. In this case, by adding a third sub-portion to the reinforcing rib, the volume of the reinforcing rib can be further increased to achieve the purpose of increasing the rigidity of the reinforcing rib. In addition, it can be seen from the above that the second surface of the carrying plate is used to carry the display module. In this case, in the case where the third sub-portion provided on the second surface is located below the radiator and shields the radiator, the third sub-portion can be located on the periphery of the display module. Decorate the perimeter.

Optionally, the material constituting the bearing plate and the reinforcing ribs is a metal material. The antenna assembly further includes a first isolation slot located between at least a part of the radiator and the carrier board. The antenna slot and the reinforcing rib are respectively located on both sides of the first isolation slot. The feed point of the antenna as a part of the frame can be set at a position where the radiator is close to the antenna slot. The antenna feed needs to be isolated from the carrier board. Therefore, the above-mentioned first isolation slot, the antenna feed and the carrying plate at the position of the antenna close to the antenna slot, and the reinforcing rib connected to the carrying plate and of the same material can be isolated.

Optionally, the antenna assembly further includes an insulating connection part, which is located in the antenna slot and the first isolation slot, and is connected to the radiator, the carrying plate and the reinforcing rib. In this way, when any radiator on the frame is subjected to an external force, the above-mentioned external force can be transmitted to the entire carrying board through the insulating connection portion, as well as the various reinforcing ribs on the carrying board. Thus, the force of the entire middle frame assembly is uniform.

Optionally, in the case where the reinforcing rib further includes a third sub-part. There is a second isolation gap between the third sub-part and the radiator. The third sub-part made of metal material can be isolated from the radiator through the second isolation gap. In addition, the insulating connection part is also located in the second isolation gap and connected to the radiator and the third sub-part. In this way, when any radiator on the frame is subjected to an external force, the above-mentioned external force can be transmitted to the third sub-part through the insulating connection part, and transmitted to the second sub-part through the third sub-part, and with the second sub-part. The connected bearing plate and each reinforcing rib on the bearing plate. Thus, the force of the entire middle frame assembly is uniform.

Optionally, the surface of the radiator, the carrying plate, and the reinforcing rib in contact with the insulating connection portion has multiple grooves. A part of the insulating connection part is filled in the groove. In this case, a non-metallic insulating material can be filled in the first gap through an injection molding process to form the above-mentioned insulating connection portion. A part of the insulating connection part is filled in the groove. In this way, the area of the contact surface between the insulating connection part and the radiator, the carrying plate and the first sub-part can be increased, so as to achieve the purpose of improving the bonding force between the insulating connection part and the radiator, the carrying plate and the first sub-part.

Optionally, the carrying board includes a first surface for carrying the circuit board. The radiator is higher than the first surface. The first sub-part is lower than the radiator, or, is flush with the radiator. Therefore, the reinforcing rib can be shielded by the radiator located outside the mobile terminal, and the aesthetic appearance of the product can be improved.

In a second aspect of the embodiments of the present application, a middle frame assembly is provided, including any one of the antenna assemblies described above. In the antenna assembly, a plurality of radiators surrounding the carrying plate and an antenna gap between two adjacent radiators constitute a frame. Among them, the frame also includes adjacent long sides and short sides. The antenna slot is located on the short side and at least one long side. The vertical projection of at least a part of the rib on the long side overlaps with the position of the antenna slot on the long side. The aforementioned middle frame component has the same technical effect as the antenna component provided by the aforementioned embodiment, and will not be repeated here.

Optionally, the distance between the antenna slot and the short side closest to the antenna slot is 20 mm-28 mm. When the user displays the screen on a mobile terminal such as a mobile phone in a landscape mode, when the above distance is less than 20mm, the user’s finger will cover the feed point near the antenna gap on the first long side or the second long side, thereby reducing The signal transmission performance of the antenna on the first long side or the second long side. Or, when the aforementioned distance is greater than 28 mm, the length of the first long side and the second long side will be increased, thereby increasing the external size of the mobile terminal. Therefore, when the above distance is greater than or equal to 20mm and less than or equal to 28mm, when the user uses the horizontal screen mode to hold the phone, it can prevent the finger from covering the feed point near the antenna slot on the long side of the frame, and it can also avoid the mobile terminal The external dimensions are larger.

Optionally, the frame includes a first long side and a second long side that are arranged oppositely, and a first short side and a second short side that are arranged oppositely. The frame includes six radiators, and any two adjacent radiators have an antenna gap between them. The six radiators are a first radiator, a second radiator, a third radiator, a fourth radiator, a fifth radiator, and a sixth radiator. Wherein, a part of the first radiator is located on the first long side, and the other part is located on the first short side. The second radiator is located on the first short side. A part of the third radiator is located on the first short side, and the other part is located on the second long side. A part of the fourth radiator is located on the second long side, and the other part is located on the second short side. The fifth radiator is located on the second short side. A part of the six radiator is located on the second short side, and the other part is located on the first long side. In this way, when the size of the short side of the frame is limited, antennas can also be provided on the long side of the frame to achieve the purpose of increasing the number of antennas in the mobile terminal. This is beneficial to the realization of a multi-input and multi-output design scheme in the mobile terminal.

In a third aspect of the embodiments of the present application, a mobile terminal is provided, including a circuit board, a display module, and any of the above-mentioned middle frame components. The bearing plate in the middle frame assembly has a first surface and a second surface which are arranged oppositely. The circuit board is arranged on the first surface and is coupled to at least one radiator in the middle frame assembly. The display module is arranged on the second surface. The mobile terminal has the same technical effect as the middle frame assembly provided in the foregoing embodiment, and will not be repeated here.

Description of the drawings

FIG. 1a is a schematic structural diagram of a mobile terminal provided by some embodiments of this application;

FIG. 1b is a schematic structural diagram of some parts of the mobile terminal in FIG. 1a;

FIG. 2 is a schematic diagram of the structure of the display module in FIG. 1b;

Figure 3 is a cross-sectional view taken along O1-O1 in Figure 1a;

FIG. 4 is a schematic structural diagram of a middle frame assembly provided by some embodiments of the present application;

Figure 5 is a schematic diagram of the force of the middle frame assembly shown in Figure 4;

Figure 6 is a cross-sectional view taken along O2-O2 in Figure 4;

FIG. 7a is a schematic structural diagram of a frame provided by some embodiments of the application;

Fig. 7b is a schematic structural diagram of a middle frame assembly having the frame shown in Fig. 7a;

FIG. 7c is a schematic structural diagram of multiple antennas arranged in the frame shown in FIG. 7a;

FIG. 7d is a schematic structural diagram of filling the insulating connection part in the first spacing slot and the antenna slot in FIG. 7c;

FIG. 8 is a schematic diagram of a horizontal screen display mode when a mobile terminal provided by some embodiments of the application is a mobile phone;

FIG. 9 is a schematic structural diagram of another frame provided by some embodiments of the application;

Fig. 10a is a schematic structural diagram of a middle frame assembly provided by some embodiments of the application;

FIG. 10b is a schematic diagram of a structure of filling an insulating connection part in the first interval gap shown in FIG. 10a;

FIG. 10c is a schematic diagram of another structure for filling an insulating connection part in the first interval gap shown in FIG. 10a;

FIG. 10d is a schematic structural diagram of a radiator with a circular arc surface in the middle frame assembly provided by some embodiments of the application;

FIG. 11a is another schematic structural diagram of a middle frame assembly provided by some embodiments of the application;

FIG. 11b is a schematic diagram of a structure of filling an insulating connection part in the first gap shown in FIG. 11a;

FIG. 12a is another schematic structural diagram of a middle frame assembly provided by some embodiments of the application;

Fig. 12b is a schematic diagram of a structure of filling an insulating connection part in the first interval gap shown in Fig. 12a.

Reference signs:

01-mobile terminal; 10-display module; 11-middle frame assembly; 12-rear case; 101-liquid crystal display; 102-BLU; 110-carrying board; 111-frame; 200-antenna assembly; 20-radiator 21-antenna slot; 22-stiffener; 31-first isolation slot; 32-second isolation slot; 201-first antenna; 202-second antenna; 203-third antenna; 204-fourth antenna; 205 206-sixth antenna; 207-seventh antenna; 221-first sub-section; 222-second sub-section; 223-third sub-section; 40-insulating connection section; 41-groove.

Detailed ways

The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments.

Hereinafter, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of these features. In the description of this application, unless otherwise specified, "plurality" means two or more.

In addition, in this application, the azimuthal terms such as "upper" and "lower" are defined relative to the schematic placement of the components in the drawings. It should be understood that these directional terms are relative concepts, and they are used for relative For the description and clarification, it can be changed correspondingly according to the changes in the orientation of the components in the drawings.

In this application, unless expressly stipulated and limited otherwise, the term "connected" should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or a whole; it can be directly connected or Can be indirectly connected through an intermediary.

The embodiments of the present application provide a mobile terminal. The mobile terminal includes, for example, a mobile phone, a tablet computer, a personal digital assistant (PDA), a vehicle-mounted computer, and a smart wearable product. The embodiment of the present application does not impose special restrictions on the specific form of the above-mentioned mobile terminal. For the convenience of description, the following is an example in which the mobile terminal 01 is a mobile phone as shown in FIG. 1a.

In this case, as shown in FIG. 1b, the above-mentioned mobile terminal 01 mainly includes a display module 10, a middle frame assembly 11, and a rear case 12. The middle frame assembly 11 is located between the display module 10 and the rear shell 12.

The display module 10 is used for displaying images. In some embodiments of the present application, the display module 10 is a liquid crystal display module. In this case, the display module 10 includes a liquid crystal display (LCD) 101 as shown in FIG. 2 and a backlight module located on the back of the liquid crystal display 101 (away from the side surface of the LCD 101 for displaying images). Group (backlight unit, BLU) 102.

The BLU 102 may provide a light source to the liquid crystal display 101, so that each sub-pixel in the liquid crystal display 101 can emit light to realize image display.

Alternatively, in other embodiments of the present application, the display module 10 may be an organic light emitting diode (OLED) display screen. Since each sub-pixel in the OLED display screen is provided with an electroluminescence layer, the OLED display screen can realize self-luminescence after receiving the working voltage. In this case, the above-mentioned BLU does not need to be provided in the display module 10 with the OLED display screen.

In addition, the middle frame assembly 11 includes a carrier board 110 as shown in FIG. 3 (a cross-sectional view taken along O1-O1 in FIG. 1a).

The supporting board 110 has a first surface A1 facing the rear case 12 and a second surface A2 facing the display module 10.

The first surface A1 of the carrying board 110 is used to carry electronic devices such as a printed circuit board (PCB), a camera, and a battery. Among them, the camera and battery are not shown in the figure.

The back shell 12 is connected with the middle frame assembly 11 to form a accommodating cavity for accommodating the aforementioned PCB, camera, battery and other electronic devices. Therefore, it is possible to prevent external water vapor and dust from intruding into the containing cavity and affecting the performance of the above electronic device.

In addition, the second surface A2 of the supporting board 110 is used for supporting the display module 10. The display module 10 is pasted on the second surface A2.

The display module 10 may be electrically connected to the PCB on the first surface A1 of the carrier board 110 after passing through the carrier board 110 through a flexible printed circuit (FPC) as shown in FIG. 1a. Therefore, the PCB can transmit the display data to the display module 10 to control the display module 10 to display images.

The aforementioned middle frame assembly 11 includes an antenna assembly 200 for transmitting signals as shown in FIG. 4. The antenna assembly 200 includes the above-mentioned carrier board 110 and at least two radiators 20 arranged around the carrier board 110.

A part of the radiator 20 is connected to the carrier board 110. There is an antenna slot 21 between two adjacent radiators 20. The antenna slot 21 is used to separate two adjacent radiators 20.

Wherein, all the radiators 20 surrounding the carrying board 110 and the antenna slots 21 located between two adjacent radiators 20 may constitute a frame 111 such that the frame 111 is arranged around a circumference of the carrying board 110.

It should be noted that at least a part of the above-mentioned radiator 20 is coupled to the PCB on the first surface A1 of the carrier board 110 and can serve as an antenna. In this case, a part of the radiator 20 is connected to the carrier board 110, which means that the radiator 20 is provided with a ground point, and the part of the radiator 20 with the ground point is electrically connected to the carrier board 110, so as to make the radiator 20 can be coupled to ground signals.

In addition, the radiator 20 is used as an antenna, and a feeding point is also provided thereon, and the feeding point can be electrically connected to the PCB on the carrier board 110, so that the radiator 20 can be used as an antenna to realize signal transmission and reception.

In this case, in order to prevent the feed point of the radiator 20 from being electrically connected to the carrier plate 110, as shown in FIG. 4, the antenna assembly 200 further includes a first isolation gap between a part of the radiator 20 and the carrier plate 110 31. The first isolation gap 31 is used to isolate the feeding point on the radiator 20 from the carrier board 110.

Since the feeding point on the radiator 20 can be arranged at a position where the radiator 20 is close to the antenna slot 21, as shown in FIG. 4, at least a part of the first isolation slot 31 is located between the antenna slot 21 and the carrier plate 110 . Therefore, the feeding point near the antenna slot 21 can be separated from the carrier plate 110 by the first isolation slot 31.

In addition, in the embodiment of the present application, the signal transmitted through the radiator 20 may be a low frequency signal (700 MHz to 960 MHz), or an intermediate frequency signal (1710 MHz to 2170 MHz), or alternatively, a high frequency signal (2300 MHz to 2700 MHz). This application does not limit this.

On this basis, the aforementioned antenna assembly 200 as shown in FIG. 4 further includes at least one reinforcing rib 22. The reinforcing rib 22 is connected to the supporting board 110.

The vertical projection of at least a part of one reinforcing rib 22 on the radiator 20 (projected in the direction of the dashed arrow shown in FIG. 4) overlaps with the position of an antenna slot 21. In this way, the position of a reinforcing rib 22 can be made to correspond to the position of an antenna slot 21 on the frame 111. The reinforcing rib 22 is used to strengthen the rigidity of the frame 111 at the antenna slot 21 corresponding to its position.

For example, when a user puts a mobile terminal with the aforementioned middle frame assembly 11, such as a mobile phone, into a trouser pocket and sits down, the body will apply an antenna gap 21 in the middle frame assembly 11 of the mobile phone to the position shown in FIG. The external force F. At this time, the stool carrying the user will exert a reaction force F'as shown in Fig. 5 on both ends of the mobile phone. As a result, the middle frame assembly 11 will be deformed at the position of the antenna slot 21. In this case, the ability to withstand the external force F at the position of the antenna slot 21 is limited. At this time, the reinforcing rib 22 corresponding to the position of the antenna slot 21 can withstand a part of the external force F. Therefore, the probability that the middle frame assembly 11 cannot be restored to its original shape due to large deformation at the position of the antenna slot 21 under the action of the external force F can be reduced, and the rigidity of the middle frame assembly 11 can be improved.

In addition, it can be seen from the above that the rigidity of the middle frame assembly 11 can be improved by providing the reinforcing rib 22 in the middle frame assembly 11. In this way, when the rigidity of the middle frame assembly 11 meets the requirements, the wall thickness D of the radiator 20 (shown in FIG. 5) can be appropriately reduced, so that the frame of a mobile terminal, such as a mobile phone, can be made thinner and improved The appearance of the product is beautiful. For example, the wall thickness D of the above-mentioned radiator 20 may be less than or equal to 4 mm. For example, 3mm, 1mm, or 0.8mm.

In some embodiments of the present application, when processing conditions such as processing accuracy and cloth space design conditions are satisfied, the aforementioned reinforcing rib 22 may be as close as possible to the antenna slot 21 corresponding to the position of the reinforcing rib 22. Therefore, it is beneficial to enhance the purpose of strengthening the rigidity of the middle frame assembly 11 of the reinforcing rib 22.

For example, when the middle frame assembly 11 has a first isolation slot 31 as shown in FIG. 4, as shown in FIG. 6 (a cross-sectional view taken along O2-O2 shown in FIG. 4), the antenna slot 21 and the reinforcement The ribs 22 may be respectively located on both sides of the first isolation slot 31, and the side surface of the reinforcing rib 22 close to the antenna slot 21 may be flush with the side wall of the first isolation slot 31 on the carrier plate 110, so that the reinforcing rib 22 and The distance of the radiator 20 at the position of the antenna slot 21 is the shortest.

In addition, in some embodiments of the present application, the materials constituting the radiator 20, the carrying plate 110, and the reinforcing rib 22 may be the same. For example, it may be magnesium aluminum alloy, or stainless steel. In this case, the above-mentioned radiator 20, the carrying plate 110 and the reinforcing rib 22 may be an integral structure.

The structure of the middle frame assembly 11 having the above-mentioned antenna assembly 200 will be described as an example below.

Example one

In this example, the description is made by taking the mobile terminal 01 as the rectangular parallelepiped shown in FIG. 1a as an example. In this case, the frame 111 in the middle frame assembly 11, as shown in FIG. 7a, includes adjacent first long sides B1 and first short sides C1, and adjacent second long sides B2 and second short sides C2. .

Wherein, the first long side B1 and the second long side B2 are arranged oppositely, and the first short side C1 and the second short side C2 are arranged oppositely.

The frame 111 includes a plurality of radiators 20, and an antenna slot 21 located on a first short side C1, a second short side C2, and at least one long side, such as the first long side B1 or the second long side B2.

In some embodiments of the present application, at least one antenna slot 21 is provided on the first short side C1, the second short side C2, the first long side B1, and the second side length B2 of the frame 111.

For example, as shown in FIG. 7a, the first short side C1 and the second short side C2 respectively have two antenna slots 21, and the first long side B1 is provided with one antenna slot 21. An antenna slot 21 is provided on the second long side B2.

In this case, the frame 111 is separated by a plurality of antenna slots 21 to partition six radiators.

For example, as shown in FIG. 7b, the above-mentioned six radiators may be the first radiator 20a, the second radiator 20b, the third radiator 20c, the fourth radiator 20d, and the second radiator 20a, the second radiator 20b, the third radiator 20c, the fourth radiator 20d, and the The fifth radiator 20e and the sixth radiator 20f.

Among them, the first radiator 20a is L-shaped, a part of which is located on the first long side B1, and the other part is located on the first short side C1.

The second radiators 20b are all located on the first short side C1.

The third radiator 20c is L-shaped, a part of which is located on the first short side C1, and the other part is located on the second long side B2.

The fourth radiator 20d is L-shaped, a part of which is located on the second long side B2, and the other part is located on the second short side C2.

The fifth radiators 20e are all located on the second short side C2.

The sixth radiator 20f is L-shaped, a part of which is located on the second short side C2, and the other part is located on the first long side B1.

Based on this, at least one antenna can be formed on each radiator 20.

For example, as shown in FIG. 7c, a part of the first radiator 20a may serve as the first antenna 201. Another part of the first radiator 20 a and a part of the sixth radiator 20 f may serve as the second antenna 202. The other part of the sixth radiator 20f may serve as the third antenna 203.

The second radiator 20b may serve as the fourth antenna 204.

A part of the third radiator 20c may serve as the fifth antenna 205. Another part of the third radiator 20c and a part of the fourth radiator 20d may serve as the sixth antenna 206. The other part of the fourth radiator 20d may serve as the seventh antenna 207.

It should be noted that when the length of the fifth radiator 20e is small, the fifth radiator 20e may not serve as an antenna. Or when the length of the fifth radiator 20e is sufficient to form an antenna, it can also be used as a seventh antenna. This application does not limit this.

In addition, the foregoing is only an example of the multiple radiators in the frame 111 forming multiple antennas. Other examples will not be repeated one by one. This application does not limit the signals transmitted by the foregoing antennas. For example, any antenna can be used to transmit Bluetooth signals, Wi-Fi signals, global positioning system (global positioning system, GPS) signals, or mobile communications, such as fourth-generation communication technology (4G) signals.

It can be seen from the above that the feed point of the antenna can be set at the position of the antenna slot 21, so the feed point of the first antenna 201, the fourth antenna 204, and the fifth antenna 205 can be located on the first short side C1 of the frame 111. The feeding points of the third antenna 203 and the seventh antenna 207 may be located on the second short side C2 of the frame.

In addition, in the middle frame assembly 11 provided by the present application, antenna slots 21 (as shown in FIG. 7b) can be provided on the first long side B1 and the second long side B2 of the frame 111, so that the first long side of the frame 111 The side B1 has a second antenna 202 as shown in FIG. 7c, and the second long side B2 has a sixth antenna 206 as shown in FIG. 7c.

In this way, when the size of the short side of the frame 111 is limited, antennas can also be arranged on the long side of the frame 111 to achieve the purpose of increasing the number of antennas in the mobile terminal 01. This is conducive to the realization of multiple input and multiple output (MIMO) design solutions in mobile terminals.

In addition, when the second antenna 202 is provided on the first long side B1 of the frame 111 and the sixth antenna 206 is provided on the second long side B2, the antenna slot 21 on the first long side B1 and the second long side B1 The distance H between the antenna slot 21 on the side B2 and the short side closest to the antenna slot 21, for example, the first short side C1 or the second short side C2 (as shown in FIG. 8) may be 20mm-28mm.

When the user displays the screen on the mobile terminal 01, such as a mobile phone, in the horizontal screen mode as shown in Figure 8, when the above distance H is less than 20mm, the user’s finger will cover the first long side B1 or the second long side B2 The feed point near the antenna slot 21 reduces the signal transmission performance of the second antenna 202 or the sixth antenna 206.

Or, when the aforementioned distance H is greater than 28 mm, the lengths of the first long side B1 and the second long side B2 will be increased, thereby increasing the external size of the mobile terminal 01.

Therefore, when the above-mentioned distance H is greater than or equal to 20mm and less than or equal to 28mm, when the user uses the horizontal screen mode to hold the phone, it can prevent the finger from covering the feeding point near the antenna slot 21 on the long side of the frame 111. Avoid large dimensions of the mobile terminal 01.

For example, the aforementioned distance H may be 20 mm, 21 mm, 22 mm, 25 mm, 28 mm, or the like.

The foregoing is an example of how the antenna slot 21 is arranged in the middle frame assembly 11. In other embodiments of the present application, at least one antenna slot 21 is provided on the first short side C1, the second short side C2, and the first long side B1 of the frame 111. The antenna slot 21 is not provided on the second long side B2.

For example, as shown in FIG. 9, there are two antenna slots 21 on the first short side C1 and the second short side C2 respectively, and one antenna slot 21 is provided on the first long side B1. The antenna slot 21 is not provided on the second long side B2.

In this case, the above-mentioned antenna 111 is divided into five radiators 20 by a plurality of antenna slots 21. At least one antenna may be formed on each radiator 20. The manner in which the radiator 20 forms an antenna will not be repeated here.

It should be noted that, as shown in FIG. 9, there are two antenna slots 21 on the first short side C1 and the second short side C2 respectively, one antenna slot 21 is provided on the first long side B1, and the second long side B2 The antenna slot 21 is not provided as an example for description. Of course, two antenna slots 21 may also be provided on the first short side C1 and the second short side C2, one antenna slot 21 is provided on the second long side B2, and no antenna slot 21 is provided on the first long side B1. It is also possible to obtain five radiators 20 in the frame 111.

On this basis, when the mobile terminal 01 adopts any of the frame 111 structures shown in Figure 7a or Figure 9, in order to improve the rigidity of the long side of the frame 111 at the position of the antenna slot 21, as shown in Figure 7b (with Taking the frame 111 shown in FIG. 7a as an example), reinforcing ribs 22 may be provided on the carrying plate 110.

The vertical projection of at least a part of the rib 22 on the long side, for example, the first long side B1 or the second long side B2, overlaps the position of the antenna slot 21 on the first long side B1 or the second long side B2. Therefore, one antenna slot 21 on the first long side B1 or the second long side B2 can correspond to a reinforcing rib 22. The ribs 22 increase the rigidity of the long sides of the frame 111. Thereby, it is possible to reduce the probability that the user applies a force to the long side of the frame 111 when using the mobile terminal 01, which causes the long side of the frame 111 to be deformed and cannot be restored to the prototype.

On this basis, in order to make the entire middle frame assembly 11 bear uniform force under the action of external force, the first gap 31 between the radiator shown in FIG. 7c, for example, the first radiator 20a and the carrier plate 110 , And the antenna slot 21 is filled with an insulating connection portion 40 as shown in FIG. 7d.

In this case, as shown in FIG. 7d, the insulating connecting portion 40 can connect the radiator 20 with the carrier plate 110 and the reinforcing rib 22 that is an integral structure with the carrier plate 110. In this way, when any one of the radiators 20 on the frame 111 receives an external force, the above-mentioned external force can be transmitted to the entire supporting board 110 through the insulating connection portion 40 and the respective reinforcing ribs 22 on the supporting board 110. Thus, the force of the entire middle frame assembly 11 is uniform.

Hereinafter, taking the material of the reinforcing rib 22 and the carrying plate 110 as the same and having an integrated structure as an example, the arrangement of the above-mentioned reinforcing rib 22 will be described.

In this example, the reinforcing rib 22 includes a first sub-part 221 as shown in FIG. 10a. The first sub-part 221 is connected to the first surface A1 of the carrying board 110 for carrying the PCB, and protrudes from the first surface A1.

As shown in FIG. 10b, the radiator 20 can protrude from the first surface A1 of the carrier board 110, so that the radiator 20 as a part of the frame 111 can shield the PCB on the first surface A1 of the carrier board 110.

In addition, in the direction perpendicular to the first surface A1 of the carrier 110, the first sub-portion 221 of the above-mentioned stiffener 22 can be lower than the radiator 20, or be flush with the radiator 20, so that it can pass through the mobile terminal. The radiator 20 on the outside of 01 can shield the reinforcing rib 22 to improve the appearance of the product.

In addition, in the case where there is a first interval gap 31 between the radiator 20 and the carrier plate 110, the insulating connection portion 40 can be filled in the first interval gap 31, so as to be as shown in FIG. 10b (section along O3-O3 in FIG. 10a). As shown in the cut cross-sectional view), the radiator 20 is connected to the carrier board 110 and the first sub-portion 221 of the reinforcing rib 22 integrated with the carrier board 110 through the insulating connecting portion 40.

On this basis, in order to make the bonding force between the insulating connection part 40 and the radiator 20, the carrier plate 110 and the first sub-part 221 stronger, thereby further improving the rigidity of the middle frame assembly 11, as shown in FIG. 10c, The surface of the radiator 20, the supporting board 110 and the first sub-part 221 in contact with the insulating connection part 40 has a plurality of grooves 41.

In this case, a non-metallic insulating material can be filled in the first spacing gap 31 in FIG. 10a through an injection molding process to form the above-mentioned insulating connection portion 40. As shown in FIG. 10c, a part of the insulating connection portion 40 is filled in the aforementioned groove 41. In this way, the area of the contact surface between the insulating connection part 40 and the radiator 20, the carrier board 110, and the first sub-part 221 can be increased, so as to increase the contact area between the insulating connection part 40 and the radiator 20, the carrier board 110 and the first sub-part 221 The purpose of inter-cohesion.

It should be noted that FIG. 10a, FIG. 10b, and FIG. 10c are described by taking the surface of the radiator 20 away from the carrier plate 110 as a plane as an example. In other embodiments of the present application, as shown in FIG. 10d, the side surface of the radiator 20 away from the carrier plate 110 may also be a circular arc surface according to the requirements of the appearance design of the mobile terminal 01.

In addition, by increasing the wall thickness D of the radiator 20 (as shown in FIG. 10b), the rigidity of the radiator 20 can be increased, and the rigidity of the entire middle frame assembly 11 can be improved.

It should be noted that when the surfaces on both sides of the radiator 20 are not flat, for example, when the contact surface of the radiator 20 and the insulating connection portion 40 has a groove 41 as shown in FIG. 10c, the radiator 20 is connected to the insulation The contact surface of the portion 40 is uneven. Alternatively, as shown in FIG. 10d, the surface of the radiator 20 on the side away from the carrying plate 110 is a circular arc surface. The wall thickness D of the above-mentioned radiator 20 is the average value of the vertical distances of points on the surface of the radiator 20 away from the carrier plate 110 to the surface of the radiator 20 close to the carrier plate 110.

Example two

In this example, by setting antenna slots 21 in the frame 111 of the mobile terminal 01, the manner of obtaining multiple antennas may be the same as that of the example 1, and will not be repeated here.

The difference from the first example is that, in the case that the carrying plate 110 includes a second surface A2 that faces away from the first surface A1, the aforementioned reinforcing rib 22 further includes a second sub-part 222 as shown in FIG. 11a. The second sub-portion 222 is connected to the second surface A2 and protrudes from the second surface A2.

As shown in FIG. 11b, the radiator 20 can protrude from the second surface A2 of the carrier board 110, so that the radiator 20 as a part of the frame 111 can shield the display module 10 on the second surface A2 of the carrier board 110 .

In addition, in the direction perpendicular to the second surface A2 of the carrier 110, the second sub-portion 222 of the above-mentioned stiffener 22 can be lower than the radiator 20, or be flush with the radiator 20, so that it can pass through the mobile terminal The radiator 20 on the outside of 01 can shield the reinforcing rib 22 to improve the appearance of the product.

In some embodiments of the present application, the material of the first sub-part 221 and the second sub-part 222 in the reinforcing rib 22 may be the same as the material of the carrier plate 110. In this case, the first sub-part 221, the second sub-part 222 and the carrier plate 110 may be an integral structure.

As shown in FIG. 11a, in the reinforcing rib 22, the first sub-portion 221 extends in a direction away from the first surface A1, and the second sub-portion 222 extends in a direction away from the second surface A2. In this way, the size of the reinforcing rib 22 in the direction perpendicular to the first surface A1 (or the second surface A2) of the bearing plate 110 can be increased, so that the rigidity of the reinforcing rib 22 can be further improved, and the rigidity of the entire middle frame assembly 11 can be improved. the goal of.

In addition, in the case where there is a first interval gap 31 between the radiator 20 and the carrier plate 110, the insulating connection portion 40 can be filled in the first interval gap 31, so as to be shown in Fig. 11b (Fig. 11a along O4-O4). As shown in the cut cross-sectional view), the first sub-part 221 and the second sub-part 222 of the reinforcing rib 22 of the radiator 20 and the supporting board 110 are connected by the insulating connection portion 40.

As mentioned above, the surface of the second sub-portion 222 in contact with the insulating connecting portion 40 can also be provided with multiple grooves to increase the contact area between the insulating connecting portion 40 and the second sub-portion 222, so as to increase the middle frame assembly 11 The purpose of stiffness.

Example three

In this example, by setting antenna slots 21 in the frame 111 of the mobile terminal 01, the manner of obtaining multiple antennas may be the same as that of the example 1, and will not be repeated here. The difference from Example 1 is that, as shown in FIG. 12 a, the reinforcing rib 22 may further include a third sub-portion 223 on the basis of the first sub-portion 221 and the second sub-portion 222.

In some embodiments of the present application, the material of the first sub-part 221, the second sub-part 222, and the third sub-part 223 in the reinforcing rib 22 may be the same as the material of the carrier plate 110. In this case, the first sub-part 221, the second sub-part 222, the third sub-part 223, and the carrier plate 110 may be an integral structure.

The third sub-portion 223 is located on the side where the second surface A2 of the supporting board 110 is located. In addition, the third sub-part 223 covers at least a part of the radiator 20. In this way, compared with the second example, by adding the third sub-part 223 in the reinforcing rib 22, the volume of the reinforcing rib 22 can be further increased, and the purpose of increasing the rigidity of the reinforcing rib 22 can be achieved.

In addition, it can be seen from the above that the second surface A2 of the carrying plate 110 is used to carry the display module 10. In this case, when the third sub-portion 223 provided on the second surface A2 is located below the radiator 20 as shown in FIG. 12a and shields the radiator 20, the third sub-portion 223 can Located at the periphery of the display module 10, the periphery of the display module 10 is decorated.

In some embodiments of the present application, when the material of the third sub-part 223 is a metal material, as shown in FIG. 12a, a second isolation gap may be provided between the third sub-part 223 of the rib 22 and the radiator 20 32. The second isolation slit 32 can isolate the radiator 20 from the third sub-part 223.

On this basis, in the case where there is a first spacing gap 31 and a second spacing gap 32 between the radiator 20 and the carrier plate 110, the insulating connecting portion 40 can be filled in the first spacing gap 31 and the second spacing gap 32 , As shown in Figure 12b (a cross-sectional view taken along O5-O5 in Figure 12a), the radiator 20 is connected to the carrier plate 110 through the insulating connecting portion 40, and the reinforcing rib 22 is integrated with the carrier plate 110. The first sub-part 221, the second sub-part 222, and the third sub-part 223 are connected.

As mentioned above, the surface of the third sub-portion 223 in contact with the insulating connecting portion 40 can also be provided with multiple grooves to increase the contact area between the insulating connecting portion 40 and the third sub-portion 223, so as to improve the middle frame assembly 11. The purpose of stiffness.

The above are only specific implementations of this application, but the protection scope of this application is not limited to this. Any change or replacement within the technical scope disclosed in this application shall be covered by the protection scope of this application . Therefore, the protection scope of this application should be subject to the protection scope of the claims.

Claims

An antenna assembly, characterized in that it comprises:

Bearing plate

At least two radiators are arranged on the periphery of the carrier board, and a part of the radiator is connected with the carrier board; there is an antenna gap between two adjacent radiators;

At least one reinforcing rib is connected to the carrying plate; a vertical projection of at least a part of the reinforcing rib on the radiator overlaps with a position of the antenna slot.
The antenna assembly according to claim 1, wherein the carrying board comprises a first surface for carrying a circuit board;

The reinforcing rib includes a first sub-part; the first sub-part is connected with the first surface and protrudes from the first surface.
The antenna assembly according to claim 2, wherein the carrying plate comprises a second surface facing away from the first surface;

The reinforcing rib further includes a second sub-part; the second sub-part is connected with the second surface and protrudes from the second surface.
The antenna assembly of claim 3, wherein:

The reinforcing rib further includes a third sub-portion connected to the second sub-portion; the third sub-portion is located on the side where the second surface of the carrier board is located, and covers at least a part of the radiator.
The antenna assembly according to any one of claims 1-4, wherein the material constituting the carrying plate and the reinforcing rib is a metal material;

The antenna assembly further includes a first isolation slot located between at least a part of the radiator and the carrier plate;

The antenna slot and the reinforcing rib are respectively located on two sides of the first isolation slot.
The antenna assembly according to claim 5, wherein the antenna assembly further comprises an insulating connection part, which is located in the antenna slot and the first isolation slot, and is connected to the radiator and the carrier board. Connected with the reinforcing rib.
The antenna assembly according to claim 6, wherein the reinforcing rib further comprises a third sub-part; there is a second isolation gap between the third sub-part and the radiator;

The insulating connection part is also located in the second isolation gap, and is connected to the radiator and the third sub-part.
The antenna assembly according to claim 6, wherein the surface of the radiator, the carrying plate, and the reinforcing rib in contact with the insulating connection portion has a plurality of grooves;

A part of the insulating connection part is filled in the groove.
The antenna assembly according to any one of claims 2-4, wherein the carrying board comprises a first surface for carrying the circuit board;

The radiator is higher than the first surface; the first sub-part is lower than the radiator, or is flush with the radiator.
A middle frame assembly, characterized by comprising the antenna assembly according to any one of claims 1-9;

A plurality of radiators surrounding the carrying board in the antenna assembly and an antenna slot between two adjacent radiators constitute a frame;

The frame also includes adjacent long sides and short sides; the antenna slot is located on the short side and at least one of the long sides;

The vertical projection of at least a part of the stiffener on the long side overlaps with the position of the antenna slot on the long side.
The middle frame assembly according to claim 10, wherein the distance between the antenna slot and the short side closest to the antenna slot is 20mm-28mm.
The middle frame assembly according to claim 10 or 11, wherein the frame comprises a first long side and a second long side that are arranged oppositely, and a first short side and a second short side that are arranged oppositely;

The frame includes six radiators, and any two adjacent radiators have the antenna gap between them; the six radiators are a first radiator, a second radiator, a third radiator, and a fourth radiator. Body, fifth radiator and sixth radiator;

A part of the first radiator is located on the first long side, and another part is located on the first short side;

The second radiator is located on the first short side;

A part of the third radiator is located on the first short side, and the other part is located on the second long side;

A part of the fourth radiator is located on the second long side, and the other part is located on the second short side;

The fifth radiator is located on the second short side;

A part of the six radiator is located on the second short side, and the other part is located on the first long side.
A mobile terminal, characterized by comprising a circuit board, a display module, and the middle frame assembly according to any one of claims 10-12;

The bearing plate in the middle frame assembly has a first surface and a second surface that are oppositely disposed;

The circuit board is disposed on the first surface and is coupled to at least one radiator in the middle frame assembly;

The display module is disposed on the second surface.