Antenna device for mobile terminal and electronic equipment

Abstract

The utility model relates to the technical field of antennas, and discloses an antenna device for a mobile terminal and electronic equipment, the antenna device comprises a main body metal frame, and the main body metal frame is provided with a bearing surface; the antenna support body is connected to the bearing surface of the main body metal frame, the antenna support body is provided with an LDS wiring area and a plurality of support elastic pieces and golden fingers located in the LDS wiring area, the golden fingers are connected to the side, facing the bearing surface, of the antenna support body, and the support elastic pieces are connected to the side, deviating from the bearing surface, of the antenna support body; the functional main board is located between the main body metal frame and the antenna support body, a plurality of feed ground connection points are arranged on the functional main board, the golden fingers abut against the feed ground connection points, one end of the support elastic piece is electrically connected with the golden fingers through the LDS wiring area, and the other end of the support elastic piece is in interference fit with the inner wall of the side edge of the main body metal frame. The comprehensive performance of the antenna is improved.

Description

Technical Field

[0001] The present application relates to the field of antenna technology, and in particular to an antenna device and electronic equipment for a mobile terminal. Background Art

[0002] The continuous development of mobile communication technology, especially the advent of the 5G era, has placed higher demands on the communication performance of mobile terminals. To meet the demands for high speed, low latency, and large connections, mobile terminal devices must possess more efficient and stable wireless signal transmission capabilities. Antennas are core components in wireless communication systems, and their design and performance directly impact the quality of signal reception and transmission.

[0003] Traditional mobile terminal antenna designs rely on external antennas or traditional embedded antenna structures, but these designs often face challenges such as limited space, complex design, and limited performance. While pursuing miniaturization and high integration, antenna performance and signal quality are often difficult to guarantee. Therefore, designing efficient and stable antenna systems within limited space has become a key issue in mobile terminal technology. Utility Model Content

[0004] In view of this, the present application provides an antenna device and an electronic device for a mobile terminal to improve the clearance area and low-frequency performance of the antenna.

[0005] To achieve the above objectives, according to the first aspect, the technical solution adopted is:

[0006] An antenna device for a mobile terminal, comprising:

[0007] A main metal frame, wherein the main metal frame has a bearing surface;

[0008] An antenna bracket body is connected to the bearing surface of the main metal frame, and the antenna bracket body is provided with an LDS routing area and a plurality of bracket springs and gold fingers located in the LDS routing area, wherein the gold fingers are connected to the side of the antenna bracket body facing the bearing surface, and the bracket springs are connected to the side of the antenna bracket body facing away from the bearing surface;

[0009] A functional mainboard is located between the main metal frame and the antenna bracket body. Several ground feed connection points are provided on the functional mainboard. The gold finger abuts against the ground feed connection point. One end of the bracket spring is electrically connected to the gold finger through the LDS routing area, and the other end of the bracket spring is interference fit with the inner wall of the side of the main metal frame.

[0010] The present application is further configured as follows: the vertical projection of the LDS routing area in the first direction is rectangular in design, and the size of the vertical projection includes 3*5mm, wherein the first direction is the direction perpendicular to the bearing surface of the main metal frame.

[0011] The present application is further configured as follows: a plurality of the bracket springs are spaced apart on the antenna bracket body and the main metal frame along a second direction, wherein the second direction is the extension direction of the side of the main metal frame, and the second direction is perpendicular to the first direction.

[0012] The present application is further configured as follows: at least one fracture is provided on the side of the main metal frame, and the bracket spring is close to the fracture in the second direction.

[0013] The present application is further configured as follows: a side of the antenna bracket body on which the bracket spring sheet is provided maintains a preset gap with the side of the main metal frame, and the bracket spring sheet is connected to the inner wall of the side of the main metal frame after crossing the preset gap.

[0014] The present application is further configured as follows: an installation positioning hole is opened on the bearing surface of the main metal frame, and the functional mainboard and the antenna bracket body are detachably connected to the main metal frame through the installation positioning hole.

[0015] The present application is further configured as follows: in the first direction, the vertical projection of the ground feed connection point covers the vertical projection of the gold finger.

[0016] The present application is further configured as follows: the side of the main metal frame includes a first antenna part and a second antenna part, the fracture is located between the first antenna part and the second antenna part, and the bracket spring is interference fit on the first antenna part.

[0017] The present application is further configured as follows: the number of the ground feed connection points, the gold fingers and the bracket springs is 3.

[0018] According to the second aspect, the technical solution adopted is:

[0019] An electronic device comprises the antenna device as described in any one of the above items.

[0020] In summary, compared with the prior art, the present application discloses an antenna device and electronic device for a mobile terminal, wherein the antenna device includes a main metal frame, an antenna bracket body and a functional mainboard, wherein the antenna bracket body is connected to the bearing surface of the main metal frame, the functional mainboard is located between the main metal frame and the antenna bracket body, the antenna bracket body is provided with an LDS routing area and a plurality of bracket springs and gold fingers located in the LDS routing area, the functional mainboard is provided with a plurality of ground feed connection points, the gold fingers are connected to the side of the antenna bracket body facing the bearing surface and abut against the ground feed connection point, the bracket spring is connected to the side of the antenna bracket body away from the bearing surface and is interference fit with the side inner wall of the main metal frame, that is, through the above arrangement, the electrically connected bracket spring and gold fingers, the gold fingers are in contact with the ground feed connection point, and the bracket spring is in contact with the side inner wall of the main metal frame, the structural connection scheme between the main metal frame, the antenna bracket body and the functional mainboard thus constructed improves the clearance area and low-frequency performance of the antenna device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following is a brief introduction to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 This is a schematic structural diagram of the main metal frame of this embodiment;

[0023] Figure 2 is a structural diagram of the functional mainboard of this embodiment;

[0024] Figure 3 is a schematic structural diagram of one side of the antenna bracket body of this embodiment;

[0025] Figure 4 is a structural schematic diagram of the other side of the antenna bracket body of this embodiment;

[0026] Figure 5 FIG. 4 is a schematic structural diagram of the antenna device of this embodiment. DETAILED DESCRIPTION

[0027] Exemplary embodiments will be described in detail herein, with examples illustrated in the accompanying drawings. When the following description refers to the drawings, identical numbers in different figures represent identical or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.

[0028] It should be noted that, in this document, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprising a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element. In addition, components, features, and elements with the same name in different embodiments of the present application may have the same meaning or different meanings, and their specific meanings need to be determined based on their explanation in the specific embodiment or further combined with the context of the specific embodiment.

[0029] It should be understood that the specific embodiments described herein are only used to explain the present application and are not intended to limit the present application.

[0030] In the subsequent description, the use of suffixes such as "module", "component" or "unit" to represent elements is only for the purpose of facilitating the description of the present application and has no specific meaning. Therefore, "module", "component" or "unit" can be used interchangeably.

[0031] In the description of this application, it should be noted that the terms "upper," "lower," "left," "right," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this application and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0032] The technical solutions shown in this application will be described in detail below through specific embodiments. It should be noted that the description order of the following embodiments does not limit the priority order of the embodiments.

[0033] Please refer to Figures 1 to 5 The antenna device for a mobile terminal of this embodiment includes a main metal frame 1, an antenna bracket body 2 and a functional mainboard 6, wherein the main metal frame 1 has a bearing surface 1a for accommodating the antenna bracket body 2 and the functional mainboard 6.

[0034] During the specific implementation process, the antenna bracket body 2 is connected to the bearing surface 1a of the main metal frame 1, and the functional mainboard 6 is located between the main metal frame 1 and the antenna bracket body 2, wherein the antenna bracket body 2 is provided with an LDS routing area 3 and several bracket spring clips 4 and gold fingers 5 located in the LDS routing area 3, the gold fingers 5 are connected to the side of the antenna bracket body 2 facing the bearing surface 1a, and the bracket spring clip 4 is connected to the side of the antenna bracket body 2 facing away from the bearing surface 1a.

[0035] In addition, several ground feed connection points 7 are provided on the functional main board 6, the gold finger 5 is in contact with the ground feed connection point 7, one end of the bracket spring piece 4 is electrically connected to the gold finger 5 through the LDS wiring area 3, and the other end of the bracket spring piece 4 is interference fit with the side inner wall of the main metal frame 1.

[0036] The antenna device of this embodiment ensures the electrical connection between the bracket spring piece 4 and the gold finger 5 on both surfaces of the antenna bracket body 2 through the LDS routing area 3, and the gold finger 5 abuts the ground feed connection point 7 of the functional mainboard 6, and the bracket spring piece 4 is interference fit with the side inner wall of the main metal frame 1, thereby performing a layered design of the main metal frame 1, optimizing the clearance requirements of the antenna device, and the interference fit relationship between the bracket spring piece 4 and the main metal frame 1 can ensure that there is a strong mechanical pressure between the antenna bracket body 2 and the main metal frame 1, thereby ensuring close electrical contact, that is, reducing the contact resistance between the antenna bracket body 2 and the main metal frame 1, thereby reducing the signal loss at this connection and improving the low-frequency performance of the antenna device.

[0037] Furthermore, based on the LDS routing area 3 designed on the antenna bracket body 2, the conductive path of the electrical connection between the bracket spring 4 and the gold finger 5 can be shortened, thereby reducing the overall impedance between the main metal frame 1, the functional motherboard 6 and the antenna bracket body 2, thereby optimizing the efficiency of antenna signal conduction, that is, improving the radiation characteristics of the antenna device in the low-frequency band and improving its low-frequency performance.

[0038] It can be understood that the other end of the bracket spring piece 4 is interference fit with the side inner wall of the main metal frame 1. The interference fit here is based on the elastic structural characteristics of the bracket spring piece 4. The other end of the bracket spring piece 4 acts on the side inner wall of the main metal frame 1 through a certain elastic pressure or extrusion, so that the end of the bracket spring piece 4 is tightly fitted with the side inner wall of the main metal frame 1, thereby achieving reliable mechanical and electrical connection.

[0039] Preferably, the other end of the bracket spring piece 4 can be designed as a round head structure, and a matching groove can be opened at the corresponding position of the side inner wall of the main metal frame 1, thereby ensuring that the bracket spring piece 4 is stably connected to the side inner wall of the main metal frame 1.

[0040] In one application scenario, the main metal frame 1 is a metal shell frame of a smart phone or a metal shell frame of a smart tablet.

[0041] Preferably, a mounting positioning hole 9 is provided on the bearing surface 1 a of the main metal frame 1 , and the functional mainboard 6 and the antenna bracket body 2 are detachably connected to the main metal frame 1 through the mounting positioning hole 9 .

[0042] It should be noted that the LDS routing area 3 on the antenna bracket body 2 is a precision routing area formed on the antenna bracket body 2 through the LDS (Laser Direct Structuring) process in the embodiment of the present application. It is faster than the traditional antenna printed circuit board (PCB) routing. One method is to use a laser to engrave a preset routing path on the surface of the antenna bracket body 2, and then metallize the routing path (copper plating, nickel plating or gold plating) to form a preset circuit structure, and the LDS can be routed on a three-dimensional surface, that is, the LDS routing area 3 can cover different planes or curved surfaces of the antenna bracket body 2, mainly manifested in that one end of the bracket spring 4 is electrically connected to the gold finger 5, thereby making full use of the effective space of the antenna bracket body 2, expanding the effective area of ​​the antenna, and optimizing the clearance requirements of the antenna device. Based on this, the LDS routing area 3 can optimize the antenna signal path, reduce the coupling interference between the antenna device and the metal structure of the mobile terminal, and further improve the signal stability of the antenna.

[0043] Preferably, the vertical projection of the LDS routing area 3 in the first direction is rectangular in design, and the size of the vertical projection includes 3*5mm, wherein the first direction is the direction perpendicular to the bearing surface 1a of the main metal frame 1, that is, the length of the vertical projection of the LDS routing area 3 can be 5mm and the width can be 3mm, so as to limit the coverage area of ​​the LDS routing area 3 on the antenna bracket body 2, thereby optimizing the layout of the antenna device in a limited space, ensuring sufficient routing area, and thus improving antenna performance.

[0044] In one embodiment, a plurality of bracket spring clips 4 are arranged at intervals along a second direction on the antenna bracket body 2 and the main metal frame 1, wherein the second direction is the extension direction of the side of the main metal frame 1, and the second direction is perpendicular to the first direction. The design of the bracket spring clips 4 arranged at intervals can effectively ensure its stable connection with the inner wall of the side of the main metal frame 1, and can also reduce the interference and parasitic effects between the bracket spring clips 4, which helps to improve the low-frequency performance and signal transmission efficiency of the antenna.

[0045] On the other hand, at least one break 8 is provided on the side of the main metal frame 1, and the bracket spring piece 4 is close to the break 8 in the second direction. The main metal frame 1 breaks the continuity of the main metal frame 1 through the break 8, thereby tuning the low-frequency band performance, and the position of the break 8 is close to the bracket spring piece 4, which can make it act as an electrical break point or impedance matching point in the antenna circuit, which helps to adjust the resonant frequency and bandwidth of the antenna.

[0046] Furthermore, the side of the main metal frame 1 includes a first antenna portion 10 and a second antenna portion 11 , the break 8 is located between the first antenna portion 10 and the second antenna portion 11 , and the bracket spring 4 is interference-fitted on the first antenna portion 10 .

[0047] During specific implementation, in the first direction, the vertical projection of the ground feed connection point 7 covers the vertical projection of the gold finger 5 , thereby facilitating quick and stable contact between the gold finger 5 and the ground feed connection point 7 .

[0048] Among them, the antenna bracket body 2 is provided with a bracket spring piece 4 on one side, which maintains a preset gap with the side of the main metal frame 1. After the bracket spring piece 4 crosses the preset gap, it is connected to the inner wall of the side of the main metal frame 1. Thus, the preset gap separates the antenna bracket body 2 from the main metal frame 1, avoiding unnecessary electrical noise or interference, and ensuring that the antenna bracket body 2 has good electrical coupling with the main metal frame 1 within the designed frequency range.

[0049] In one embodiment, the number of ground feed connection points 7, gold fingers 5 and bracket springs 4 is 3, so as to achieve a more uniform grounding distribution, reduce the impact of grounding faults on antenna signal transmission, and ensure that the antenna signal can obtain a stable electrical connection when connected to the antenna bracket body 2 and the functional main board 6, reducing signal instability caused by contact problems.

[0050] This embodiment also discloses an electronic device, which includes the antenna device described in any of the above embodiments. For other working principles and processes of the electronic device of this embodiment, please refer to the description of the antenna device for a mobile terminal in the above embodiment of the present invention, which will not be repeated here.

[0051] The above describes in detail the antenna device and electronic device for a mobile terminal provided by this application. This document uses specific examples to illustrate the principles and implementation methods of this application. It should be noted that in this application, the descriptions of each embodiment have their own focus. For parts that are not detailed or recorded in a particular embodiment, please refer to the relevant descriptions of other embodiments.

[0052] The above are only preferred embodiments of the present application and do not limit the patent scope of the present application. The various technical features of the technical solution of the present application can be arbitrarily combined. In order to make the description concise, all possible combinations of the various technical features in the above embodiments are not described. Any equivalent structure or equivalent process transformation made using the contents of the description and drawings of this application, or directly or indirectly applied in other related technical fields, as long as there is no contradiction in the combination of these technical features, are also included in the patent protection scope of the present application.

Claims

1. An antenna device for a mobile terminal, characterized in that: include: A main metal frame, wherein the main metal frame has a bearing surface; An antenna bracket body is connected to the bearing surface of the main metal frame, and the antenna bracket body is provided with an LDS routing area and a plurality of bracket springs and gold fingers located in the LDS routing area, wherein the gold fingers are connected to the side of the antenna bracket body facing the bearing surface, and the bracket springs are connected to the side of the antenna bracket body facing away from the bearing surface; A functional mainboard is located between the main metal frame and the antenna bracket body. Several ground feed connection points are provided on the functional mainboard. The gold finger abuts against the ground feed connection point. One end of the bracket spring is electrically connected to the gold finger through the LDS routing area, and the other end of the bracket spring is interference fit with the inner wall of the side of the main metal frame.

2. The antenna device for a mobile terminal according to claim 1, wherein The vertical projection of the LDS routing area in the first direction is rectangular, and the size of the vertical projection includes 3*5mm, wherein the first direction is a direction perpendicular to the bearing surface of the main metal frame.

3. The antenna device for a mobile terminal according to claim 2, wherein: A plurality of the bracket springs are spaced apart on the antenna bracket body and the main metal frame along a second direction, wherein the second direction is an extension direction of the side of the main metal frame, and the second direction is perpendicular to the first direction.

4. The antenna device for a mobile terminal according to claim 3, wherein: At least one fracture is provided on a side of the main metal frame, and the bracket spring is close to the fracture in the second direction.

5. The antenna device for a mobile terminal according to claim 1, wherein: A preset gap is maintained between the side of the antenna bracket body where the bracket spring piece is provided and the side of the main metal frame. The bracket spring piece is connected to the inner wall of the side of the main metal frame after crossing the preset gap.

6. The antenna device for a mobile terminal according to claim 1, wherein: The supporting surface of the main metal frame is provided with mounting positioning holes, and the functional mainboard and the antenna bracket body are detachably connected to the main metal frame through the mounting positioning holes.

7. The antenna device for a mobile terminal according to claim 2, wherein: In the first direction, a vertical projection of the ground feed connection point covers a vertical projection of the gold finger.

8. The antenna device for a mobile terminal according to claim 4, wherein: The side of the main metal frame includes a first antenna part and a second antenna part, the fracture is located between the first antenna part and the second antenna part, and the bracket spring piece is interference-fitted on the first antenna part.

9. The antenna device for a mobile terminal according to claim 1, wherein: The number of the ground feed connection points, the gold fingers and the bracket springs is three.

10. An electronic device, characterized in that: The antenna device comprises the antenna device according to any one of claims 1 to 9.

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