Electronic device

Abstract

The invention provides an electronic device which comprises a middle frame, a rear cover, a circuit board, a supporting piece, an antenna first sub-part and an antenna second sub-part, the rear cover is fixed to one side of the middle frame, an inner cavity and an air channel are formed between the rear cover and the middle frame, and the circuit board and the supporting piece are both installed in the inner cavity. The antenna first sub-part is fixed to the side, facing the rear cover, of the supporting piece and electrically connected with the circuit board, the antenna second sub-part is fixed to the side, facing the middle frame, of the rear cover or is a part of the rear cover, at least part of the antenna second sub-part is located in the air duct, and the area, facing the antenna second sub-part, of the rear cover is a non-signal shielding area. And the antenna first sub-part and the antenna second sub-part jointly form an antenna. The antenna area of the electronic equipment is large, and the antenna performance is good.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of antennas, and particularly to an electronic device. Background Art

[0002] At present, for electronic devices with large-size full-screen displays, bracket antennas are usually used to achieve signal transmission. However, due to the development requirements of the multi-functionality of electronic devices, there are many internal components in the electronic device. Therefore, the layout space of the bracket antenna in the electronic device is limited, resulting in a limited area of the bracket antenna and poor antenna performance. Summary of the Invention

[0003] The embodiments of the present application provide an electronic device with a relatively large antenna area and better antenna performance.

[0004] In a first aspect, an embodiment of the present application provides an electronic device, including a middle frame, a rear cover, a support member, a circuit board, a first antenna sub-part, and a second antenna sub-part. The rear cover is fixed to one side of the middle frame, and an inner cavity and an air duct are formed between the rear cover and the middle frame. The circuit board and the support member are both installed in the inner cavity. The first antenna sub-part is fixed to the side of the support member facing the rear cover and is electrically connected to the circuit board. The second antenna sub-part is fixed to the side of the rear cover facing the middle frame and at least part of it is located in the air duct. The area of the rear cover facing the second antenna sub-part is a non-signal shielding area. The non-signal shielding area allows signals to pass through. The first antenna sub-part and the second antenna sub-part together constitute an antenna.

[0005] In this embodiment, the antenna of the electronic device includes a first antenna sub-part and a second antenna sub-part. By adding a second antenna sub-part, at least part of the second antenna sub-part is located in the air duct and can transmit signals through the rear cover, so as to increase the area of the antenna by using the air duct of the electronic device, thereby improving the antenna performance. The antenna has better bandwidth and radiation efficiency. In addition, the air duct of the electronic device also provides a good clearance environment for the antenna, which is beneficial to ensuring the performance of the antenna.

[0006] Among them, a feeding circuit is provided on the circuit board, and the feeding circuit can feed the first antenna sub-part. Exemplarily, the first antenna sub-part can be electrically connected to the circuit board through traces or pins. For example, one end of the trace or pin can be fixed to the side of the support member facing the rear cover and connected to the first antenna sub-part, and the other end of the trace or pin can be wound from the side of the support member to the circuit board to connect to the circuit board.

[0007] Among them, the air in the air duct can be exchanged with the space outside the electronic device to transfer the heat inside the electronic device to the outside of the electronic device to achieve heat dissipation. Exemplarily, the air duct is isolated from the inner cavity. At this time, the air duct is separated from the inner cavity, which can prevent external dust, water vapor, etc. from entering the inner cavity through the air duct to protect the components located in the inner cavity and improve the reliability of the electronic device.

[0008] Among them, non-signal shielding areas can adopt non-conductive materials. Among them, the non-conductive materials can be fiberglass, ceramics, plastics, etc.

[0009] In some possible implementation manners, the second antenna sub-part is a flexible printed circuit board or a metal part. At this time, the structure of the second antenna sub-part is simple and easy to implement.

[0010] In some possible implementation manners, the second antenna sub-part is a conductive heat dissipation part. In this embodiment, the electronic device multiplexes the heat dissipation part as the second antenna sub-part, which can not only retain the heat dissipation function of the heat dissipation part, but also enable the air duct to take away the heat of the heat dissipation part, so as to take away the heat of other components thermally connected to the heat dissipation part in the electronic device to ensure the heat dissipation performance of the electronic device, and can improve the antenna performance of the electronic device without adding additional structural parts, with low implementation difficulty and low cost.

[0011] For example, the second antenna sub-part can be a graphite sheet. Among them, the graphite sheet is easy to cut, easier to meet the heat dissipation requirements and antenna design requirements, and has a low cost. The graphite sheet can be assembled and fixed to the rear cover by means of bonding, etc.

[0012] In some possible implementation manners, the second antenna sub-part is assembled and fixed to the rear cover. At this time, the second antenna sub-part and the rear cover are processed separately first and then assembled, with low manufacturing difficulty and easy to implement. Or, the second antenna sub-part is formed on the rear cover. At this time, the connection stability between the second antenna sub-part and the rear cover is high. That is to say, the second antenna sub-part can be fixed to the rear cover by means of assembly and fixation or forming.

[0013] In some possible implementation manners, the rear cover can be a non-metal rear cover, such as a fiberglass rear cover, a ceramic rear cover, or a plastic rear cover, etc. At this time, the structure of the rear cover is simple and easy to implement.

[0014] In some possible implementation manners, the area of the second antenna sub-part is larger than the area of the first antenna sub-part. At this time, the second antenna sub-part can significantly increase the area of the antenna of the electronic device to improve the antenna performance. Exemplarily, the area of the second antenna sub-part can be larger than twice the area of the first antenna sub-part.

[0015] In some possible implementation manners, the second antenna sub-part is integrally arranged corresponding to the air duct. At this time, the support part and the first antenna sub-part can be arranged as close to the air duct as possible to ensure the coupling between the first antenna sub-part and the second antenna sub-part.

[0016] In some possible implementations, the second antenna subsection includes a first portion and a second portion, with the first portion corresponding to the air duct and the second portion corresponding to the inner cavity, and the area of the first portion is larger than the area of the second portion. In this embodiment, the majority of the second antenna subsection's structure may correspond to the air duct, with a small portion located outside the air duct. This not only reduces coupling difficulty between the first and second antenna subsections, but also fully utilizes the air duct space, thereby improving the antenna performance of the electronic device.

[0017] In some possible implementations, the spacing between the first antenna sub-section and the second antenna sub-section is less than one-eighth of the wavelength corresponding to the center frequency of the antenna's operating frequency band. In this embodiment, the spacing between the first antenna sub-section and the second antenna sub-section is set so that the first antenna sub-section and the second antenna sub-section are sufficiently close to each other that they can be successfully coupled and together form an antenna.

[0018] In some possible implementations, the support member is an audio module, and the first antenna subsection is fixed to the audio module's sound cavity housing. The audio module also includes a speaker mounted within the sound cavity housing. The first antenna subsection can be staggered with the audio module's speaker to reduce interference with the speaker's presence.

[0019] In some possible implementations, the support member is a bracket, and the first antenna sub-section is fixed to an insulating portion of the bracket. At least a portion of the bracket is constructed of an insulating material. For example, the entire bracket may be constructed of an insulating material, with the insulating portion constituting the entire bracket. Alternatively, the bracket may be partially constructed of an insulating material to form the insulating portion, while the remaining portion of the bracket may be a conductive portion or other conductive portion.

[0020] In some possible implementations, the first antenna sub-section is a flexible printed circuit board or a metal component. In this case, the structure of the first antenna sub-section is simple and easy to implement.

[0021] In some possible implementations, the first antenna subsection is assembled and fixed to the support. In this case, the first antenna subsection and the support are first processed separately and then assembled, which reduces manufacturing complexity and is easy to implement. Alternatively, the first antenna subsection is molded onto the support. In this case, the connection between the first antenna subsection and the support is highly stable.

[0022] In some possible implementations, a portion of the support member's structure forms a portion of the duct wall. In this case, the support member and the duct are arranged compactly and the distance between them is very close, which facilitates coupling between the first antenna sub-section and the second antenna sub-section, reduces the difficulty of arranging the first antenna sub-section and the second antenna sub-section, and also helps save internal space in the electronic device, thereby facilitating miniaturization of the electronic device.

[0023] In some possible implementation manners, the electronic device further includes a first seal, which is located between the support member and the rear cover and forms part of the air duct wall of the air duct. In this embodiment, the first seal can not only seal the air duct, but also limit the support member and the rear cover, providing a certain support for the rear cover, which is beneficial to improving the structural reliability of the electronic device. In addition, the first seal has a certain compressibility and can absorb the assembly tolerance between the support member and the rear cover, which is beneficial to improving the assembly accuracy of the electronic device.

[0024] In some possible implementation manners, the electronic device further includes a second seal, which is located between the support member and the middle frame and forms part of the air duct wall of the air duct. In this embodiment, the second seal can not only seal the air duct, but also limit the support member and the middle frame, which is beneficial to improving the structural reliability of the electronic device. In addition, the second seal has a certain compressibility and can absorb the assembly tolerance between the support member and the middle frame, which is beneficial to improving the assembly accuracy of the electronic device.

[0025] In some possible implementation manners, the middle frame includes a frame and a middle plate fixed to the inner side of the frame. The frame is connected to the rear cover, the middle plate is disposed opposite to the rear cover, the air duct and the inner cavity are located between the middle plate and the rear cover, and the outlet of the air duct is provided on the frame or between the frame and the rear cover.

[0026] In some possible implementation manners, the middle plate includes an air duct bottom wall and an air duct side wall. The air duct side wall is fixed to the side of the air duct bottom wall facing the rear cover. The air duct side wall is connected to the rear cover. The air duct bottom wall, the air duct side wall and the rear cover surround the air duct. The air duct bottom wall and the air duct side wall are integrally formed on the middle plate. In other words, the air duct bottom wall and the air duct side wall can be integrally formed during the forming process of the middle plate, and the air duct bottom wall and the air duct side wall and at least one other structure of the middle plate are integrally formed structural members.

[0027] In this embodiment, by integrally forming the air duct side wall and the air duct bottom wall on the middle plate, not only can the structural composition of the air duct be simplified and the airtightness of the air duct be improved, but also it is beneficial to reducing the forming and assembly difficulty of the air duct and reducing the cost of the electronic device.

[0028] In some possible implementation manners, the middle plate includes a metal part, and the metal part is disposed opposite to the first antenna sub-part and the second antenna sub-part such as, the middle plate can be entirely made of a metal material to form the metal part; or, the middle plate can be partially made of a metal material to form the metal part.

[0029] In this embodiment, the metal part of the middle plate is disposed opposite to the first antenna sub-part and the second antenna sub-part, and can be used as a reflector for the first antenna sub-part and the second antenna sub-part to improve the antenna radiation efficiency, adjust the antenna signal direction, and enhance the antenna signal strength. In addition, the middle plate having a metal part can also increase the structural strength of the middle frame.

[0030] In some possible implementation manners, the electronic device further includes a fan. The fan is installed in the inner cavity, and the air outlet of the fan communicates with the air duct. In this embodiment, the air formed by the operation of the fan can be sent out of the electronic device through the air duct to take out the heat inside the electronic device, so as to achieve heat dissipation.

[0031] In some possible implementation manners, the electronic device further includes a display screen. The display screen is located on the side of the middle frame facing away from the back cover and is fixed to the middle frame. Exemplarily, the display screen has a display function, or the display screen can integrate a display function and a touch sensing function.

[0032] In a second aspect, an embodiment of the present application provides an electronic device, including a middle frame, a back cover, a circuit board, a support member, and a first sub-portion of an antenna. The back cover is fixed to one side of the middle frame. An inner cavity and an air duct are formed between the back cover and the middle frame. The circuit board and the support member are both installed in the inner cavity. The first sub-portion of the antenna is fixed to the side of the support member facing the back cover and is electrically connected to the circuit board.

[0033] Wherein, the back cover includes a main body and a second sub-portion of the antenna connected to the main body. The arrangement plane of the main body and the second sub-portion of the antenna is perpendicular to the thickness direction of the back cover, and the two are insulated from each other. At least part of the second sub-portion of the antenna is disposed opposite to the air duct. The first sub-portion of the antenna and the second sub-portion of the antenna jointly form an antenna.

[0034] In this embodiment, the antenna of the electronic device includes a first sub-portion of the antenna and a second sub-portion of the antenna. By adding the second sub-portion of the antenna, which is a part of the structure of the back cover, the electronic device can perform signal transmission with the outside. Moreover, at least part of the second sub-portion of the antenna is disposed corresponding to the air duct, so that the area of the antenna is increased by using the air duct of the electronic device, and the performance of the antenna is improved. The antenna has better bandwidth and radiation efficiency. In addition, the air duct of the electronic device also provides a good clearance environment for the antenna, which is beneficial to ensuring the performance of the antenna.

[0035] Wherein, the air in the air duct can be exchanged with the space outside the electronic device to transfer the heat inside the electronic device to the outside of the electronic device, so as to achieve heat dissipation. Exemplarily, the air duct is isolated from the inner cavity. At this time, the air duct is separated from the inner cavity, which can prevent external dust, water vapor, etc. from entering the inner cavity through the air duct to protect the components located in the inner cavity and improve the reliability of the electronic device.

[0036] In some possible implementation manners, the second sub-portion of the antenna is made of a conductive material. In this embodiment, a certain area of the back cover is made of a conductive material to form the conductive second sub-portion of the antenna, so that the second sub-portion of the antenna can be used as a part of the antenna. Wherein, the conductive material can be metal, carbon fiber, etc.

[0037] In some possible implementations, the main body includes an insulating portion and a conductive portion, the insulating portion is connected between the second antenna sub-portion and the conductive portion, and a material of the conductive portion is the same as or different from a material of the second antenna sub-portion.

[0038] When the conductive portion is made of the same material as the second antenna sub-section, the back cover can be constructed with a slit in the conductive structure and filled with a non-conductive structure. This reduces the manufacturing cost of the back cover. When the conductive portion is made of a different material than the second antenna sub-section, the material selection for the second antenna sub-section is more flexible, allowing for better adaptation to antenna signal transmission requirements.

[0039] In some possible implementations, the main body is made of insulating material. In this case, the back cover can be constructed by adding a local conductive structure to the insulating structure.

[0040] In some possible implementations, the area of the second antenna subsection is larger than that of the first antenna subsection. In this case, the second antenna subsection can significantly increase the area of the electronic device's antenna, thereby improving antenna performance. For example, the area of the second antenna subsection can be more than twice the area of the first antenna subsection.

[0041] In some possible implementations, the entire second antenna sub-section is disposed corresponding to the air duct. In this case, the support member and the first antenna sub-section can be disposed as close to the air duct as possible to ensure coupling between the first antenna sub-section and the second antenna sub-section.

[0042] In some possible implementations, the second antenna subsection includes a first portion and a second portion, with the first portion corresponding to the air duct and the second portion corresponding to the inner cavity, and the area of the first portion is larger than the area of the second portion. In this embodiment, the majority of the second antenna subsection's structure may correspond to the air duct, with a small portion located outside the air duct. This not only reduces coupling difficulty between the first and second antenna subsections, but also fully utilizes the air duct space, thereby improving the antenna performance of the electronic device.

[0043] In some possible implementations, the spacing between the first antenna sub-section and the second antenna sub-section is less than one-eighth of the wavelength corresponding to the center frequency of the antenna's operating frequency band. In this embodiment, the spacing between the first antenna sub-section and the second antenna sub-section is set so that the first antenna sub-section and the second antenna sub-section are sufficiently close to each other that they can be successfully coupled and together form an antenna.

[0044] In some possible implementations, the support member is an audio module, and the first antenna subsection is fixed to the audio module's sound cavity housing. The audio module also includes a speaker mounted within the sound cavity housing. The first antenna subsection can be staggered with the audio module's speaker to reduce interference with the speaker's presence.

[0045] In some possible implementation manners, the support member is a bracket, and the first sub - part of the antenna is fixed to the insulating part of the bracket.

[0046] In some possible implementation manners, the first sub - part of the antenna is a flexible printed circuit board or a metal part. At this time, the structure of the first sub - part of the antenna is simple and easy to implement.

[0047] In some possible implementation manners, the first sub - part of the antenna is assembled and fixed to the support member. At this time, the first sub - part of the antenna and the support member are processed separately first and then assembled, with low manufacturing difficulty and easy to implement. Or, the first sub - part of the antenna is formed on the support member. At this time, the connection stability between the first sub - part of the antenna and the support member is high.

[0048] In some possible implementation manners, part of the structure of the support member constitutes part of the air duct wall of the air duct. At this time, the support member and the air duct are arranged compactly and the distance between them is very close, which is beneficial to the coupling between the first sub - part of the antenna and the second sub - part of the antenna, reduces the arrangement difficulty of the first sub - part of the antenna and the second sub - part of the antenna. In addition, it is also beneficial to save the internal space of the electronic device, thereby facilitating the miniaturization of the electronic device.

[0049] In some possible implementation manners, the electronic device further includes a first sealing member, which is located between the support member and the rear cover and constitutes part of the air duct wall of the air duct. In this embodiment, the first sealing member can not only seal the air duct, but also limit the support member and the rear cover, providing a certain support for the rear cover, which is beneficial to improving the structural reliability of the electronic device. In addition, the first sealing member has a certain compressibility and can absorb the assembly tolerance between the support member and the rear cover, which is beneficial to improving the assembly accuracy of the electronic device.

[0050] In some possible implementation manners, the electronic device further includes a second sealing member, which is located between the support member and the middle frame and constitutes part of the air duct wall of the air duct. In this embodiment, the second sealing member can not only seal the air duct, but also limit the support member and the middle frame, which is beneficial to improving the structural reliability of the electronic device. In addition, the second sealing member has a certain compressibility and can absorb the assembly tolerance between the support member and the middle frame, which is beneficial to improving the assembly accuracy of the electronic device.

[0051] In some possible implementation manners, the middle frame includes a frame and a middle plate fixed to the inner side of the frame. The frame is connected to the rear cover, the middle plate is arranged opposite to the rear cover, the air duct and the inner cavity are located between the middle plate and the rear cover, and the outlet of the air duct is arranged on the frame or between the frame and the rear cover.

[0052] In some possible implementation manners, the middle plate includes an air duct bottom wall and an air duct side wall. The air duct side wall is fixed to one side of the air duct bottom wall facing the rear cover. The air duct side wall is connected to the rear cover. The air duct bottom wall, the air duct side wall, and the rear cover surround the air duct. The air duct bottom wall and the air duct side wall are integrally formed on the middle plate. In other words, the air duct bottom wall and the air duct side wall can be integrally formed during the forming process of the middle plate. The air duct bottom wall and the air duct side wall and at least one other structure of the middle plate are integrally formed structural members.

[0053] In this embodiment, by integrally forming the air duct side wall and the air duct bottom wall on the middle plate, not only can the structural composition of the air duct be simplified, the airtightness of the air duct be improved, but also it is beneficial to reduce the forming and assembly difficulty of the air duct and is beneficial to reducing the cost of the electronic device.

[0054] In some possible implementation manners, the middle plate includes a metal part, and the metal part is disposed opposite to the first antenna sub-part and the second antenna sub-part. For example, the middle plate can be entirely made of a metal material to form the metal part; or, the middle plate can be partially made of a metal material to form the metal part.

[0055] In this embodiment, the metal part of the middle plate is disposed opposite to the first antenna sub-part and the second antenna sub-part, and can be used as a reflector for the first antenna sub-part and the second antenna sub-part to improve the antenna radiation efficiency, adjust the antenna signal direction, and enhance the antenna signal strength. In addition, the middle plate having a metal part can also increase the structural strength of the middle frame.

[0056] In some possible implementation manners, the electronic device further includes a fan, and the fan is installed in the inner cavity. The air outlet of the fan communicates with the air duct. In this embodiment, the air formed by the operation of the fan can be sent out of the electronic device through the air duct to take out the heat inside the electronic device to achieve heat dissipation.

[0057] In some possible implementation manners, the electronic device further includes a display screen, and the display screen is located on the side of the middle frame facing away from the rear cover and is fixed to the middle frame. Exemplarily, the display screen has a display function, or the display screen can integrate a display function and a touch sensing function. Description of the Drawings

[0058] In order to illustrate the technical solutions in the embodiments of the present application or the background art, the following will describe the drawings required to be used in the embodiments of the present application or the background art.

[0059] Figure 1 It is a schematic structural diagram of an electronic device provided by an embodiment of the present application;

[0060] Figure 2 is Figure 1 a schematic diagram of a partial structure of the illustrated electronic device;

[0061] Figure 3 is Figure 1Schematic cross-sectional structure diagram of the electronic device shown cut along A-A;

[0062] Figure 4 is Figure 3 Partial enlarged schematic diagram of the structure shown;

[0063] Figure 5 Comparison diagram of the antenna S11 curves of the electronic device provided by the embodiment of the present application and the traditional electronic device;

[0064] Figure 6 Comparison diagram of the antenna radiation efficiency curves of the electronic device provided by the embodiment of the present application and the traditional electronic device;

[0065] Figure 7 Partial structure schematic diagram of the electronic device provided by the embodiment of the present application in some other embodiments;

[0066] Figure 8 is Figure 7 Schematic diagram of the back cover of the electronic device shown from another angle. Detailed implementation manners

[0067] The embodiments of the present application will be described below with reference to the accompanying drawings in the embodiments of the present application.

[0068] In the description of the embodiments of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium.

[0069] In the embodiments of the present application, 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 quantity of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. The term "plurality" means at least two. The terms "include", "have" and their deformations all mean "include but not limited to", unless otherwise specifically emphasized in other ways. An "integrally formed structural member" means that during the process of forming one part of the structural member, this part is connected to another part together and does not need to connect the two parts together by means of reprocessing (such as bonding, welding, snap connection, screw connection).

[0070] In the embodiments of the present application, "and / or" is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this article generally represents an "or" relationship between the associated objects before and after.

[0071] Please refer to Figure 1 and Figure 2 , Figure 1 which is a schematic structural diagram of an electronic device 100 provided by an embodiment of the present application, Figure 2 and Figure 1 is a schematic diagram of a partial structure of the electronic device 100 shown.

[0072] In some embodiments, the electronic device 100 of the embodiments of the present application may be an electronic product such as a tablet computer, a notebook computer, a mobile phone, a wearable device, etc., and the wearable device may be a smart watch, a smart bracelet, a smart glasses, etc. Among them, the electronic device 100 may be a straight device or a foldable device. The electronic device 100 of the embodiments of the present application is described by taking a tablet computer as an example. Of course, other types of electronic devices 100 may also adopt a similar structure, which will not be elaborated later. It should be noted that Figure 1 and the relevant drawings below only schematically show some components included in the electronic device 100, and the actual shapes, actual sizes, actual positions and actual structures of these components are not limited by Figure 1 and the following drawings.

[0073] In some embodiments, the electronic device 100 may include a middle frame 1, a rear cover 2 and a display screen 3. Exemplarily, the rear cover 2 is fixed to one side of the middle frame 1, and the display screen 3 is located on the side of the middle frame 1 facing away from the rear cover 2 and is fixed to the middle frame 1. Among them, for convenience of description later, it is defined that the electronic device 100 has a thickness direction, and the rear cover 2, the middle frame 1 and the display screen 3 are arranged in the thickness direction of the electronic device 100. In some examples, the rear cover 2 and the display screen 3 may be integrally or mainly in a flat shape and perpendicular to the thickness direction of the electronic device 100.

[0074] Exemplarily, the display screen 3 has a display function, or the display screen 3 can integrate the display function and the touch sensing function. The display function of the display screen 3 is used to display text, images, videos, etc. The touch sensing function of the display screen 3 is used to detect the touch actions of the user to achieve information interaction between humans and machines. Among them, the display screen 3 can be an organic light-emitting diode (OLED) display screen, an active-matrix organic light-emitting diode (AMOLED) display screen, a mini organic light-emitting diode display screen, a micro light-emitting diode (Micro LED) display screen, a micro organic light-emitting diode (Micro OLED) display screen, or a quantum dot light-emitting diode (QLED) display screen, a liquid crystal display (LCD), etc. In some other embodiments, the electronic device 100 may not be provided with the display screen 3.

[0075] Exemplarily, the middle frame 1 may include a frame 11 and a middle plate 12 fixed to the inner side of the frame 11. The frame 11 is connected to the rear cover 2, and the middle plate 12 is disposed opposite to the rear cover 2. Among them, the frame 11 and the middle plate 12 may be an integrally formed structural member, or may form an integrated structure through an assembly method, such as bonding, welding, snap connection, fastening connection, etc. The embodiments of the present application do not make strict limitations on this.

[0076] Please refer to Figures 2 to 4 , Figure 3 is Figure 1 the schematic cross-sectional structure diagram of the electronic device 100 shown in the figure cut along A-A, Figure 4 is Figure 3 the partial enlarged schematic diagram of the structure shown in the figure.

[0077] In some embodiments, an inner cavity 4 and an air duct 5 are formed between the rear cover 2 and the middle frame 1. Exemplarily, the air duct 5 and the inner cavity 4 may be located between the middle plate 12 and the rear cover 2. Among them, the inner cavity 4 is located inside the frame 11. Among them, the outlet of the air duct 5 (not shown in the figure) may be provided on the frame 11 or between the frame 11 and the rear cover 2. The air in the air duct 5 can exchange with the air outside the electronic device 100 to transfer the heat inside the electronic device 100 to the outside of the electronic device 100 to achieve heat dissipation. Exemplarily, the air duct 5 is isolated from the inner cavity 4. At this time, the air duct 5 and the inner cavity 4 are separated and are independent spaces, which can prevent external dust, water vapor, etc. from entering the inner cavity 4 through the air duct 5 to protect the components located in the inner cavity 4 and improve the reliability of the electronic device 100.

[0078] Exemplarily, the middle plate 12 may include an air duct bottom wall 121 and an air duct side wall 122. The air duct side wall 122 is fixed to the side of the air duct bottom wall 121 facing the rear cover 2. The air duct side wall 122 is connected to the rear cover 2. The air duct bottom wall 121, the air duct side wall 122 and the rear cover 2 surround the air duct 5. Among them, the air duct bottom wall 121 and the air duct side wall 122 may be integrally formed on the middle plate 12. In other words, the air duct bottom wall 121 and the air duct side wall 122 may be formed together during the forming process of the middle plate 12, and the air duct bottom wall 121, the air duct side wall 122 and at least one other structure of the middle plate 12 are integrally formed structural members. For example, the middle plate 12 may be formed by die casting, and during the die casting process, the air duct bottom wall 121 and the air duct side wall 122 are formed together.

[0079] In this embodiment, by integrally forming the air duct side wall 122 and the air duct bottom wall 121 on the middle plate 12, not only can the structural composition of the air duct 5 be simplified and the airtightness of the air duct 5 be improved, but also it is beneficial to reduce the forming and assembly difficulty of the air duct 5 and is beneficial to reducing the cost of the electronic device 100.

[0080] In some other embodiments, the air duct side wall 122 and the air duct bottom wall 121 may also be independently formed and then assembled and fixed to other structures of the middle plate 12 to form a part of the middle plate 12. Among them, in the embodiments of the present application, "assembled and fixed" means fixed connection by an assembly method. For example, fixed connection is performed by welding, clamping, bonding, fastener connection, etc.

[0081] In some embodiments, the electronic device 100 further includes a fan 6. The fan 6 is installed in the inner cavity 4, and the air outlet of the fan 6 communicates with the air duct 5. In this embodiment, the wind formed by the operation of the fan 6 can be sent out of the electronic device 100 through the air duct 5 to take out the heat inside the electronic device 100 to achieve heat reduction. In some examples, the air duct side wall 122 may include two relatively arranged parts. One end of the two parts may be connected to the frame 11, and the other end of the two parts may be connected to the fan 6.

[0082] It can be understood that in the embodiments of the present application, the electronic device 100 can be a thin and large planar-size product. For example, the planar size can be 10 inches (25.4 cm) or more. At this time, the display screen 3 can also adopt a large planar-size product to achieve large-screen display. Moreover, there is enough space inside the electronic device 100 for arranging the air duct 5 and the fan 6, so that the electronic device 100 has better heat dissipation performance.

[0083] In some other embodiments, the air duct 5 can be arranged inside the electronic device 100 without arranging the fan 6. By exchanging air between the air duct 5 and the outside of the electronic device 100, the heat inside the electronic device 100 can also be taken away to achieve heat dissipation. Or, other structural components can be arranged in the electronic device 100 to perform heat exchange with the outside of the electronic device 100 by means of the air duct 5, or to drive the air in the air duct 5 to perform heat exchange with the outside of the electronic device 100. The embodiments of the present application do not strictly limit this.

[0084] Please refer to Figure 2 and Figure 3 , in some embodiments, the electronic device 100 may further include a support member 7, and the support member 7 is installed in the inner cavity 4. Among them, the support member 7 can be arranged adjacent to the air duct 5 to be close to the air duct 5. Exemplarily, the support member 7 can be fixed to one side of the middle plate 12 facing the rear cover 2. Among them, the support member 7 has a certain structural height, and there may be a gap between the support member 7 and the rear cover 2, but this gap is significantly smaller than the gap between the middle plate 12 and the rear cover 2.

[0085] In some examples, the support member 7 can be an audio module. For example, the audio module can have a sound cavity housing and a speaker, and the speaker can be installed inside the sound cavity housing. Among them, the sound cavity housing can be entirely made of an insulating material, such as plastic, etc., and the insulating part of the sound cavity housing is the whole of the bracket. Or, part of the sound cavity housing can be made of a non-metallic material, and this part forms the insulating part of the sound cavity housing.

[0086] In some other examples, the support member 7 can be a bracket. At least part of the structure of the bracket is made of an insulating material. For example, the bracket can be entirely made of an insulating material, and the insulating part of the bracket is the whole of the bracket; or, the bracket can also be partially made of an insulating material to form an insulating part, and the other part of the bracket can be a conductive part or others. Among them, the above-mentioned insulating material can be plastic, etc.

[0087] In some embodiments, the electronic device 100 may further include a circuit board 8, which is installed in the inner cavity 4. The circuit board 8 may be disposed adjacent to the support member 7 so as to be close to the support member 7. The circuit board 8 may be a rigid printed circuit board (PCB), a flexible printed circuit board (FPC), or a rigid-flexible printed circuit board, which is not strictly limited in the embodiments of the present application.

[0088] Please refer to Figure 2 and Figure 4 In some embodiments, the electronic device 100 may further include a first sub-portion 91 of the antenna. The first sub-portion 91 of the antenna is fixed to the side of the support member 7 facing the back cover 2 and is electrically connected to the circuit board 8. A feeding circuit (not shown in the figure) is provided on the circuit board 8, and the feeding circuit can feed the first sub-portion 91 of the antenna. Exemplarily, the first sub-portion 91 of the antenna can be electrically connected to the circuit board 8 through a trace or a pin. For example, one end of the trace or pin can be fixed to the side of the support member 7 facing the back cover 2 and connected to the first sub-portion 91 of the antenna, and the other end of the trace or pin can be wrapped around the side of the support member 7 to the circuit board 8 to connect to the circuit board 8.

[0089] For example, when support member 7 is an audio module, antenna first sub-section 91 can be fixed to the audio module's sound cavity housing, for example, to the insulating portion of the sound cavity housing. Antenna first sub-section 91 can be staggered with the audio module's speaker (not shown) to reduce interference from the speaker on antenna first sub-section 91.

[0090] Exemplarily, when the support member 7 is a bracket, the first antenna sub-part 91 can be fixed to the insulating part of the bracket.

[0091] For example, the first antenna sub-section 91 may be a flexible printed circuit board or a metal component. In this case, the structure of the first antenna sub-section 91 is simple and easy to implement.

[0092] For example, the first antenna subsection 91 can be assembled and fixed to the support member 7. In this case, the first antenna subsection 91 and the support member 7 are first processed separately and then assembled, which reduces manufacturing complexity and is easy to implement. Alternatively, the first antenna subsection 91 can be molded on the support member 7. In this case, the connection between the first antenna subsection 91 and the support member 7 is highly stable. In other words, the first antenna subsection 91 can be fixed to the support member 7 by assembly or molding.

[0093] For example, the first sub - part 91 of the antenna is a flexible printed circuit board, and the first sub - part 91 of the antenna is assembled and fixed to the support member 7 by means of adhesion, snap - connection, welding, fastener connection, etc.; or, the first sub - part 91 of the antenna is a metal plate, such as a copper plate, an iron plate, an aluminum plate, etc., and can be assembled and fixed to the support member 7 by means of adhesion, snap - connection, welding, fastener connection, etc.; or, the first sub - part 91 of the antenna is an LDS (Laser - Direct - structuring) metal structure member, which can be made of metal materials such as copper, iron, aluminum, etc., and the first sub - part 91 of the antenna can be directly formed on the support member 7 by the LDS process.

[0094] Please refer to Figure 2 and Figure 4 , in some embodiments, the electronic device 100 may further include a second sub - part 92 of the antenna. The second sub - part 92 of the antenna may be fixed to the side of the rear cover 2 facing the middle frame 1 and at least partially located in the air duct 5. Among them, the second sub - part 92 of the antenna may form a first projection on the rear cover 2, and the air duct 5 may form a second projection on the rear cover 2. When at least part of the first projection is located within the second projection, that is, when at least part of the first projection coincides with the second projection, at least part of the second sub - part 92 of the antenna is located within the air duct 5.

[0095] Among them, the area of the rear cover 2 facing the second sub - part 92 of the antenna is a non - signal - shielding area. Among them, the non - signal - shielding area allows signals to pass through and can also be called a signal - passing area. Exemplarily, the non - signal - shielding area may be made of non - conductive materials. Among them, the non - conductive materials may be fiberglass, ceramic, plastic, etc.

[0096] In some examples, the rear cover 2 may be a non - metal rear cover, such as a fiberglass rear cover, a ceramic rear cover, or a plastic rear cover, etc. At this time, the structure of the rear cover 2 is simple and easy to implement. In other examples, the rear cover 2 may also be a splicing structure. For example, when the rear cover 2 includes the above - mentioned non - signal - shielding area (abbreviated as the first area), it may further include a second area. The second area may be a signal - shielding area or a non - signal - shielding area, and the second area is spliced with the first area. The specific structure and material of the rear cover 2 in the embodiments of the present application are not strictly limited.

[0097] Among them, the first sub - part 91 of the antenna is coupled to the second sub - part 92 of the antenna. Among them, the first sub - part 91 of the antenna and the second sub - part 92 of the antenna together constitute the antenna 9 of the electronic device 100, that is, the antenna 9 of the electronic device 100 includes the first sub - part 91 of the antenna and the second sub - part 92 of the antenna.

[0098] In this embodiment, the antenna 9 of the electronic device 100 adds an antenna second sub - part 92. The antenna second sub - part 92 is at least partially located in the air duct 5 and can transmit signals through the rear cover 2, so as to utilize the air duct 5 of the electronic device 100 to increase the area of the antenna 9, thereby improving the performance of the antenna 9. The antenna 9 has better bandwidth and radiation efficiency. In addition, the air duct 5 of the electronic device 100 also provides a good clearance environment for the antenna 9, which is beneficial to ensuring the performance of the antenna 9.

[0099] In the embodiment of the present application, since the antenna 9 is composed of an antenna first sub - part 91 and an antenna second sub - part 92, both of them work simultaneously to present the performance of the antenna 9. If the antenna second sub - part 92 is omitted, the S11 curve of the antenna and the frequency curve of the antenna will change significantly.

[0100] Please refer to Figure 5 and Figure 6 , Figure 5 which is the comparison diagram of the S11 curves of the antennas of the electronic device 100 provided in the embodiment of the present application and the traditional electronic device 100, Figure 6 and

[0101] which is the comparison diagram of the radiation efficiency curves of the antennas of the electronic device 100 provided in the embodiment of the present application and the traditional electronic device 100. Figure 5 Among them, the S11 curve in Figure 5 represents the return loss of the antenna. The unit of the vertical coordinate is decibel (dB), and the horizontal coordinate represents frequency, with the unit of gigahertz (GHz). Figure 5 In

[0102] Figure 6 the unit of the vertical coordinate is decibel (dB), and the horizontal coordinate represents frequency, with the unit of gigahertz (GHz). Figure 5 In Figure 6 the solid line represents the S11 curve of the antenna 9 of the electronic device 100 in the embodiment of the present application, and the dotted curve represents the S11 curve of the antenna without the antenna second sub - part 92. It can be seen from

[0103] that in some possible embodiments, the electronic device 100 in the embodiment of the present application can not only achieve the coverage of the 2.4GHz band of wifi (Wireless Fidelity), but also the resonance depth is significantly improved compared with the scheme without the antenna second sub - part 92.

[0103] It can be understood that the setting of the second antenna sub - part 92 adds a resonance within the band. The second antenna sub - part 92 is the main radiator of the antenna 9 of the electronic device 100, thereby improving the performance of the antenna 9 of the electronic device 100. In some examples, the first antenna sub - part 91 can form a resonance, which can be within the band or not within the band, or the first antenna sub - part 91 may not form a resonance. The first antenna sub - part 91 is used to feed signals to the second antenna sub - part 92. The specific functions and compositions of the first antenna sub - part 91 in the embodiments of the present application are not strictly limited.

[0104] It can be understood that in addition to covering the 2.4GHz band of Wi - Fi, the antenna 9 of the electronic device 100 in the embodiments of the present application can cover other frequency bands in some other embodiments, for example, it can cover other frequency bands within 1.7GHz to 5GHz.

[0105] In the embodiments of the present application, the second antenna sub - part 92 can include one or more structural members. When the second antenna sub - part 92 includes multiple structural members, the multiple structural members can be connected and arranged or spaced apart. The specific compositions and shapes of the second antenna sub - part are not strictly limited in the embodiments of the present application. The following embodiments will be described by taking the second antenna sub - part 92 including one structural member as an example.

[0106] Please refer to again Figure 2 and Figure 4 , in some embodiments, the area of the second antenna sub - part 92 is larger than the area of the first antenna sub - part 91. At this time, the second antenna sub - part 92 can significantly increase the area of the antenna 9 of the electronic device 100 to improve the performance of the antenna 9. Exemplarily, the area of the second antenna sub - part 92 can be more than twice the area of the first antenna sub - part 91.

[0107] Among them, due to the relatively large space of the air duct 5 of the electronic device 100, the second antenna sub - part 92 can be set with a larger area to make full use of the space of the air duct 5, and the performance of the antenna 9 is better.

[0108] In some embodiments, the second antenna sub - part 92 can include a first part 921 and a second part 922. The second part 922 is connected to the first part 921. The first part 921 is arranged corresponding to the air duct 5, for example, it can be located within the air duct 5. The second part 922 is arranged corresponding to the inner cavity 4, for example, it can be located outside the air duct 5. The area of the first part 921 is larger than the area of the second part 922.

[0109] In this embodiment, most of the structure of the second antenna sub - part 92 is arranged corresponding to the air duct 5, and a small part of the structure is located outside the air duct 5, which can not only reduce the coupling difficulty between the first antenna sub - part 91 and the second antenna sub - part 92, but also make full use of the space of the air duct 5 to improve the performance of the antenna 9 of the electronic device 100.

[0110] In some other embodiments, the second antenna sub - part 92 can also be disposed corresponding to the air duct 5 as a whole. For example, the second antenna sub - part 92 can be entirely located within the air duct 5. At this time, the support 7 and the first antenna sub - part 91 can be disposed as close as possible to the air duct 5 to ensure the coupling between the first antenna sub - part 91 and the second antenna sub - part 92.

[0111] In some embodiments, the distance between the first antenna sub - part 91 and the second antenna sub - part 92 is less than one - eighth of the wavelength corresponding to the center frequency of the operating frequency band of the antenna 9. Among them, since the shapes of the second antenna sub - part 92 and the first antenna sub - part 91 can be regular or irregular, the distance between the first antenna sub - part 91 and the second antenna sub - part 92 refers to the dimension at the narrowest position in the gap between the two.

[0112] In this embodiment, by setting the distance between the first antenna sub - part 91 and the second antenna sub - part 92, the first antenna sub - part 91 and the second antenna sub - part 92 are close enough to each other so that they can be coupled smoothly to jointly form the antenna 9. It can be understood that in some other embodiments, when the first antenna sub - part 91 and the second antenna sub - part 92 are coupled, the distance between the first antenna sub - part 91 and the second antenna sub - part 92 can also meet other settings, and the embodiments of the present application do not strictly limit this.

[0113] In some examples, in the thickness direction of the electronic device 100, the second antenna sub - part 92 can be stagger - set with respect to the first antenna sub - part 91; in some other examples, in the thickness direction of the electronic device 100, the second antenna sub - part 92 can also be at least partially directly opposite to the first antenna sub - part 91. The embodiments of the present application do not strictly limit the relative position relationship between the two.

[0114] In some embodiments, the second antenna sub - part 92 can be a flexible printed circuit board or a metal part. At this time, the structure of the second antenna sub - part 92 is simple and easy to implement. Exemplarily, the second antenna sub - part 92 can be assembled and fixed to the rear cover 2. At this time, the second antenna sub - part 92 and the rear cover 2 are processed separately first and then assembled, with low manufacturing difficulty and easy to implement. Or, the second antenna sub - part 92 can also be formed on the rear cover 2. For example, after the rear cover 2 is manufactured, the second antenna sub - part 92 can be processed and manufactured on the rear cover 2 so that the second antenna sub - part 92 is directly formed on the rear cover 2 without being fixed to the rear cover 2 through subsequent assembly processes. At this time, the connection stability between the second antenna sub - part 92 and the rear cover 2 is high. In the embodiments of the present application, the second antenna sub - part 92 can be fixed to the rear cover 2 by means of assembly and fixation or forming, and the implementation methods are flexible and diverse.

[0115] For example, the second antenna sub - part 92 is a flexible printed circuit board, and the second antenna sub - part 92 is assembled and fixed to the rear cover 2 by means of adhesion, snap - connection, welding, fastener connection, etc.; or, the second antenna sub - part 92 is a metal plate, such as a copper plate, an iron plate, an aluminum plate, etc., and can be assembled and fixed to the rear cover 2 by means of adhesion, snap - connection, welding, fastener connection, etc.; or, the second antenna sub - part 92 is an LDS (Laser - Direct - structuring) metal structural member, which can adopt metal materials such as copper, iron, aluminum, etc., and the second antenna sub - part 92 can be directly formed on the rear cover 2 by the LDS process. Among them, when the second antenna sub - part 92 is a flexible printed circuit board or an LDS metal structural member, a relatively complex antenna structure can be realized; when the second antenna sub - part 92 is a metal plate, a relatively simple antenna structure can be realized, and the cost is relatively low.

[0116] In some embodiments, the second antenna sub - part 92 can also be a conductive heat - dissipating component. For example, the second antenna sub - part 92 can be a graphite sheet, and can be assembled and fixed to the rear cover 2 by means of adhesion, etc. In this embodiment, the electronic device 100 multiplexes the heat - dissipating component as the second antenna sub - part 92, which can not only retain the heat - dissipating function of the heat - dissipating component, so that the air duct 5 can also take away the heat of the heat - dissipating component, thereby taking away the heat of other components in the electronic device 100 that are thermally connected to the heat - dissipating component to ensure the heat - dissipating performance of the electronic device 100, and can improve the performance of the antenna 9 of the electronic device 100 without adding additional structural components, with low implementation difficulty and low cost.

[0117] In addition, when the second antenna sub - part 92 adopts a graphite sheet, the graphite sheet is easy to cut, and is more likely to meet the heat - dissipating requirements and antenna design requirements, and the cost is low. In some other embodiments, the second antenna sub - part 92 can also be other forms of conductive heat - dissipating components. For example, the second antenna sub - part 92 can also be a heat - pipe - structured heat - spreader, etc. The specific implementation structure of the second antenna sub - part 92 in the embodiments of the present application is not strictly limited.

[0118] In some embodiments, the middle plate 12 of the middle frame 1 can include a metal part (not shown in the figure), and the metal part is disposed opposite to the first antenna sub - part 91 and the second antenna sub - part 92. For example, the middle plate 12 can be entirely made of a metal material to form the metal part; or, the middle plate 12 can be partially made of a metal material to form the metal part.

[0119] In this embodiment, the metal part of the middle plate 12 is disposed opposite to the first antenna sub - part 91 and the second antenna sub - part 92, and can be used as a reflector for the first antenna sub - part 91 and the second antenna sub - part 92 to improve the radiation efficiency of the antenna 9, adjust the signal direction of the antenna 9, and enhance the signal strength of the antenna 9. In addition, the middle plate 12 having a metal part can also increase the structural strength of the middle frame 1.

[0120] Among them, the above-mentioned metal part can be made of copper material, aluminum material, copper alloy, aluminum alloy or copper-aluminum composite material, etc.

[0121] As Figure 4 shown, in some embodiments, a part of the structure of the support member 7 can form a part of the air duct wall of the air duct 5. At this time, the support member 7 and the air duct 5 are arranged compactly and the distance between them is very close, which is beneficial to the coupling between the first antenna sub-part 91 and the second antenna sub-part 92, reduces the arrangement difficulty of the first antenna sub-part 91 and the second antenna sub-part 92, and also helps to save the internal space of the electronic device 100, thus facilitating the miniaturization of the electronic device 100.

[0122] Exemplarily, a part of the structure of the support member 7 can be lapped on the side wall 122 of the air duct and hermetically connect the side wall 122 of the air duct and the rear cover 2.

[0123] In some embodiments, the electronic device 100 may further include a first sealing member 20, and the first sealing member 20 is located between the support member 7 and the rear cover 2 and forms a part of the air duct wall of the air duct 5. Among them, the first sealing member 20 can be made of materials such as foam and rubber. Exemplarily, the first sealing member 20 can be bonded to the support member 7 to maintain a relatively fixed positional relationship with the support member 7.

[0124] In this embodiment, the first sealing member 20 can not only seal the air duct 5, but also limit the support member 7 and the rear cover 2, provide a certain support for the rear cover 2, and is beneficial to improving the structural reliability of the electronic device 100. In addition, the first sealing member 20 has a certain compressibility and can absorb the assembly tolerance between the support member 7 and the rear cover 2, which is beneficial to improving the assembly accuracy of the electronic device 100.

[0125] Among them, when the second antenna sub-part 92 extends from the air duct 5 to the inner cavity 4, the first sealing member 20 can also abut against the second antenna sub-part 92 for sealing and limiting. At this time, a part of the structure of the first sealing member 20 is sealed between the support member 7 and the rear cover 2, and another part of the structure is sealed between the support member 7 and the second antenna sub-part 92. Among them, the second antenna sub-part 92 is fixed to the rear cover 2, and the first sealing member 20 can abut against, but not bond to, the rear cover 2 and the second antenna sub-part 92 to facilitate the disassembly or installation of the rear cover 2 and the second antenna sub-part 92. Alternatively, the first sealing member 20 and the rear cover 2 and the second antenna sub-part 92 can also be bonded and fixed.

[0126] In some embodiments, the electronic device 100 may further include a second seal 30. The second seal 30 is located between the support member 7 and the middle frame 1 and forms part of the air duct wall of the air duct 5. For example, the second seal 30 may be sealed between the side wall 122 of the air duct and the support member 7. Among them, the second seal 30 may be made of materials such as foam and rubber. Exemplarily, the second seal 30 may be bonded to the side wall 122 of the air duct and / or the support member 7 to maintain a stable connection relationship.

[0127] In this embodiment, the second seal 30 can not only seal the air duct 5, but also limit the support member 7 and the middle frame 1, which is beneficial to improving the structural reliability of the electronic device 100. In addition, the second seal 30 has a certain compressibility and can absorb the assembly tolerances of the support member 7 and the middle frame 1, which is beneficial to improving the assembly accuracy of the electronic device 100.

[0128] Among them, when the side wall 122 of the air duct is made of a metal material, the first seal 20 and / or the second seal 30 may be made of an insulating material to achieve electrical isolation.

[0129] In Figure 4 the embodiment, the side wall 122 of the air duct, the second seal 30, the support member 7, and the first seal 20 cooperate together to form the air duct wall of the air duct 5. In some other embodiments, the air duct wall of the air duct 5 may also be formed by the side wall 122 of the air duct, or formed by the air duct wall, the support member 7, and one of the seals. The specific structural composition of the air duct wall of the air duct 5 in the embodiments of the present application is not strictly limited.

[0130] Please refer to Figure 7 and Figure 8 , Figure 7 which is a partial structural schematic diagram of the electronic device 100 provided in the embodiments of the present application in some other embodiments. Figure 8 is Figure 7 a structural schematic diagram of the rear cover 2 of the electronic device 100 shown in another angle. Among them, Figure 8 the presented angle of the rear cover 2 is the upward or downward view angle of the rear cover 2, that is, the angle of looking down at the rear cover 2 from the outside of the electronic device 100 or the angle of looking up at the rear cover 2 from the inside of the electronic device 100. The electronic device 100 in this embodiment may include most of the technical features of the electronic device 100 in the previous embodiments. The following mainly describes the differences between the two, and most of the same content between the two will not be elaborated.

[0131] In some embodiments, the electronic device 100 may include a middle frame 1, a rear cover 2, a support member 7, a circuit board 8, and a first antenna sub - part 91. The rear cover 2 is fixed to one side of the middle frame 1. An inner cavity 4 and an air duct 5 are formed between the rear cover 2 and the middle frame 1. Both the support member 7 and the circuit board 8 are installed in the inner cavity 4. The first antenna sub - part 91 is fixed to the side of the support member 7 facing the rear cover 2 and is electrically connected to the circuit board 8. Among them, the rear cover 2 includes a main body 21 and an antenna second sub - part 92 connected to the main body 21. The arrangement plane of the main body 21 and the antenna second sub - part 92 is perpendicular to the thickness direction of the rear cover 2, and the two are insulated from each other. At least part of the antenna second sub - part 92 is disposed opposite to the air duct 5. Among them, the first antenna sub - part 91 is coupled to the antenna second sub - part 92. Among them, the first antenna sub - part 9ly and the antenna second sub - part 92 together constitute the antenna 9 of the electronic device 100, that is, the antenna 9 of the electronic device 100 includes the first antenna sub - part 91 and the antenna second sub - part 92.

[0132] In this embodiment, by adding the antenna second sub - part 92 to the antenna 9 of the electronic device 100, the antenna second sub - part 92 is a part of the structure of the rear cover 2 and can transmit signals to the outside. And at least part of the antenna second sub - part 92 is arranged corresponding to the air duct 5. Thus, the area of the antenna is increased by using the air duct 5 of the electronic device 100, and the performance of the antenna 9 is improved. The antenna 9 has better bandwidth and radiation efficiency. In addition, the air duct 5 of the electronic device 100 also provides a good clearance environment for the antenna 9, which is beneficial to ensuring the performance of the antenna 9.

[0133] It can be understood that the main difference between this embodiment and the previous embodiment lies in the implementation manner of the antenna second sub - part 92. In the previous embodiment, the antenna second sub - part 92 and the rear cover 2 are two structural parts, and the antenna second sub - part 92 is fixed to the rear cover 2. While in this embodiment, the antenna second sub - part 92 is a part of the structure of the rear cover 2. When manufacturing the rear cover 2, the manufacturing of the antenna second sub - part 92 is completed. Compared with the previous embodiment, one structural part is reduced, which is beneficial to simplifying the structure and assembly process of the electronic device 100.

[0134] Among them, the rear cover 2 is generally plate - shaped, and the plate surface of the rear cover 2 is perpendicular to the thickness direction of the rear cover 2. The arrangement plane of the main body 21 and the antenna second sub - part 92 is perpendicular to the thickness direction of the rear cover 2, that is, the main body 21 and the antenna second sub - part 92 are arranged on the plate surface of the rear cover 2, and the main body 21 and the antenna second sub - part 92 are also generally plate - shaped. Among them, the rear cover 2 can be flat - shaped, or the rear cover 2 can also be in the shape of a flat middle part and a curved peripheral part. The embodiments of the present application do not make strict limitations on this.

[0135] Among them, part or all of the structure of the second antenna sub - part 92 corresponds to the air duct 5, that is, in the thickness direction of the electronic device 100, part or all of the structure of the second antenna sub - part 92 is arranged facing the air duct 5. At this time, the projection of the air duct 5 on the rear cover 2 overlaps with at least part of the second antenna sub - part 92.

[0136] Among them, the second antenna sub - part 92 is made of a conductive material. In this embodiment, a certain part of the rear cover 2 is made of a conductive material to form the conductive second antenna sub - part 92, so that the second antenna sub - part 92 can be used as part of the antenna 9. Among them, the conductive material can be metal, carbon fiber, etc.

[0137] In some embodiments, the main body 21 may include an insulating part 211 and a conductive part 212. The insulating part 211 is connected between the second antenna sub - part 92 and the conductive part 212, and the material of the conductive part 212 is the same as or different from that of the second antenna sub - part 92.

[0138] Among them, when the material of the conductive part 212 is the same as that of the second antenna sub - part 92, the rear cover 2 can adopt a structure of opening a slit in the conductive structure and filling a non - conductive structure in the slit. For example, a slit can be opened in a metal plate body to form the conductive part 212 and the second antenna sub - part 92, and a non - metal material is filled in the slit. For example, the insulating part 211 can be formed by nano - injection molding. At this time, the manufacturing cost of the rear cover 2 is relatively low.

[0139] Among them, when the material of the conductive part 212 is different from that of the second antenna sub - part 92, the choice of the material of the second antenna sub - part 92 is more flexible and can better adapt to the antenna signal transmission requirements.

[0140] In some embodiments, the main body 21 is made of an insulating material. At this time, the rear cover 2 can adopt a structure of adding a local conductive structure in the insulating structure. For example, the main body 21 is made of a glass fiber material, the second antenna sub - part 92 is made of a carbon fiber material, and the rear cover 2 adopts a structure of adding a local carbon fiber plate in the glass fiber board. Or, the main body 21 is made of a plastic material, the second antenna sub - part 92 is made of a metal material (such as copper, aluminum, iron, etc. or their alloys), and the rear cover 2 adopts a structure of adding a local metal plate in the non - metal board.

[0141] Among them, the rear cover 2 further includes an appearance layer (not shown in the figure). The appearance layer can be arranged on the side of the main body 21 and the second antenna sub - part 92 facing away from the middle frame 1. For example, the appearance layer can cover the surfaces of the main body 21 and the second antenna sub - part 92 facing away from the middle frame 1. Among them, the appearance layer can be used to protect the rear cover, improve the appearance and touch of the rear cover, and at the same time, the appearance layer also allows the second antenna sub - part 92 to transmit signals to the outside of the electronic device 100. Exemplarily, the appearance layer can be a plain leather layer, etc.

[0142] It can be understood that the main differences between the electronic device 100 in this embodiment and the previous embodiments lie in the different structures of the rear cover 2 and the different compositions of the second sub-portion 92 of the antenna described above. For other design contents, reference can be made to the relevant descriptions in the previous embodiments, which will not be elaborated here.

[0143] In the previous embodiments, part of the structure of the air duct 5 is formed by the middle frame 1, and the support member 7 is installed on the middle frame 1. In some other embodiments, part of the structure of the air duct 5 can also be formed by other structural members of the electronic device 100, and the position of the support member 7 is adjusted adaptively, as long as it still satisfies the condition of being adjacent to the air duct 5. For example, part of the structure of the air duct 5 can be formed by a bracket or a support, and the bracket or the support is fixed to the non-light-emitting side of the display screen 3 (that is, the side of the display screen 3 facing the rear cover 2), and the support member 7 is also fixed to the non-light-emitting side of the display screen 3. The embodiments of the present application do not strictly limit the constituent structure of the air duct 5 and the installation structure of the support member 7.

[0144] The references to "an embodiment", "some embodiments", etc. described in this specification mean that specific features, structures, or characteristics described in connection with the embodiment are included in one or more embodiments of the present application. Thus, the statements "in an embodiment", "in some embodiments", "in some other embodiments", etc. that appear in different places in this specification do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in another way.

[0145] The above are only partial embodiments of the present application. The protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present application, and all should be covered by the protection scope of the present application. Without conflict, the embodiments and features in the embodiments of the present application can be combined with each other. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. An electronic device (100), characterized in that, It includes a middle frame (1), a rear cover (2), a support member (7), a circuit board (8), a first antenna sub - part (91) and a second antenna sub - part (92). The rear cover (2) is fixed to one side of the middle frame (1). An inner cavity (4) and an air duct (5) are formed between the rear cover (2) and the middle frame (1). The support member (7) and the circuit board (8) are both installed in the inner cavity (4). The first antenna sub - part (91) is fixed to the side of the support member (7) facing the rear cover (2) and is electrically connected to the circuit board (8). The second antenna sub - part (92) is fixed to the side of the rear cover (2) facing the middle frame (1) and at least part of it is located in the air duct (5). The area of the rear cover (2) opposite to the second antenna sub - part (92) is a non - signal - shielding area. The first antenna sub - part (91) and the second antenna sub - part (92) together form an antenna (9).

2. The electronic device (100) according to claim 1, characterized in that The second antenna sub - part (92) is a flexible printed circuit board, a metal part or a conductive heat - dissipating part.

3. The electronic device (100) according to claim 1 or 2, characterized in that, The second antenna sub - part (92) is assembled and fixed to the rear cover (2), or the second antenna sub - part (92) is formed on the rear cover (2).

4. The electronic device (100) according to any one of claims 1 to 3, characterized in that, The rear cover (2) is a glass fiber rear cover, a ceramic rear cover or a plastic rear cover.

5. An electronic device (100), characterized in that, It includes a middle frame (1), a rear cover (2), a support member (7), a circuit board (8) and a first antenna sub - part (91). The rear cover (2) is fixed to one side of the middle frame (1). An inner cavity (4) and an air duct (5) are formed between the rear cover (2) and the middle frame (1). The support member (7) and the circuit board (8) are both installed in the inner cavity (4). The first antenna sub - part (91) is fixed to the side of the support member (7) facing the rear cover (2) and is electrically connected to the circuit board (8); Wherein, the rear cover (2) includes a main body (21) and a second antenna sub - part (92) connecting the main body (21). The arrangement plane of the main body (21) and the second antenna sub - part (92) is perpendicular to the thickness direction of the rear cover (2), and they are insulated from each other. At least part of the second antenna sub - part (92) is arranged opposite to the air duct (5). The first antenna sub - part (91) and the second antenna sub - part (92) together form an antenna (9).

6. The electronic device (100) according to claim 5, characterized in that, The second antenna sub - part (92) is made of a conductive material.

7. The electronic device (100) according to claim 5 or 6, characterized in that, The main body (21) includes an insulating part (211) and a conductive part (212). The insulating part (211) is connected between the second antenna sub - part (92) and the conductive part (212). The material of the conductive part (212) is the same as or different from the material of the second antenna sub - part (92); And / or, the main body (21) is made of an insulating material.

8. The electronic device (100) according to any one of claims 1 to 7, characterized in that, The area of the second antenna sub - part (92) is larger than the area of the first antenna sub - part (91).

9. The electronic device (100) according to any one of claims 1 to 8, characterized in that, The second antenna sub - part (92) is arranged as a whole corresponding to the air duct (5); or, The second sub - part (92) of the antenna includes a first part (921) and a second part (922). The first part (921) is arranged corresponding to the air duct (5), the second part (922) is arranged corresponding to the inner cavity (4), and the area of the first part (921) is larger than the area of the second part (922).

10. The electronic device (100) according to any one of claims 1 to 9, characterized in that, The distance between the first sub - part (91) of the antenna and the second sub - part (92) of the antenna is less than one - eighth of the wavelength corresponding to the center frequency of the operating frequency band of the antenna (9).

11. The electronic device (100) according to any one of claims 1 to 10, characterized in that, The support member (7) is an audio module, and the first sub - part (91) of the antenna is fixed to the sound cavity housing of the audio module; Alternatively, the support member (7) is a bracket, and the first sub - part (91) of the antenna is fixed to the insulating part of the bracket.

12. The electronic device (100) according to any one of claims 1 to 11, characterized in that, The first sub - part (91) of the antenna is a flexible printed circuit board or a metal part; and / or, the first sub - part (91) of the antenna is assembled and fixed to the support member (7), or the first sub - part (91) of the antenna is formed on the support member (7).

13. The electronic device (100) according to any one of claims 1 to 12, characterized in that, Part of the structure of the support member (7) constitutes part of the air duct wall of the air duct (5).

14. The electronic device (100) according to claim 13, characterized in that, The electronic device (100) further includes a first seal (20). The first seal (20) is located between the support member (7) and the rear cover (2) and constitutes part of the air duct wall of the air duct (5); and / or, the electronic device (100) further includes a second seal (30). The second seal (30) is located between the support member (7) and the middle frame (1) and constitutes part of the air duct wall of the air duct (5).

15. The electronic device (100) according to any one of claims 1 to 14, characterized in that, The middle frame (1) includes a frame (11) and a middle plate (12) fixed to the inner side of the frame (11). The frame (11) is connected to the rear cover (2). The middle plate (12) is arranged opposite to the rear cover (2). The air duct (5) and the inner cavity (4) are located between the middle plate (12) and the rear cover (2). The outlet of the air duct (5) is provided on the frame (11) or between the frame (11) and the rear cover (2).

16. The electronic device (100) according to claim 15, characterized in that, The middle plate (12) includes an air duct bottom wall (121) and air duct side walls (122). The air duct side walls (122) are fixed to the side of the air duct bottom wall (121) facing the rear cover (2). The air duct side walls (122) are connected to the rear cover (2). The air duct bottom wall (121), the air duct side walls (122) and the rear cover (2) surround the air duct (5) and are integrally formed on the middle plate (12).

17. The electronic device (100) according to claim 15 or 16, characterized in that, The middle plate (12) includes a metal part, and the metal part is arranged opposite to the first sub - part (91) and the second sub - part (92) of the antenna.

18. The electronic device (100) according to any one of claims 1 to 17, characterized in that, The electronic device (100) further includes a fan (6). The fan (6) is installed in the inner cavity (4), and the air outlet of the fan (6) is communicated with the air duct (5).

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