An electronic device

Abstract

An embodiment of the present application provides an electronic device, which may include a mobile phone, a tablet computer, a laptop computer, an ultra-mobile personal computer (UMPC), a handheld computer, a walkie-talkie, a netbook, a POS machine, a personal digital assistant (PDA), a wearable device, a virtual reality device, a wireless USB flash drive, a Bluetooth speaker / earphone, or a mobile or fixed terminal with an antenna, and a plurality of first antennas are arranged in a first metal middle frame of the electronic device, and the plurality of first antennas are mounted on a carrier, and the carrier is mounted on the printed circuit board through a support member, so that the antenna setting of the electronic device is realized, and the problem of difficulty in setting the antenna of the existing folding screen mobile phone is solved.

Description

Technical Field

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

[0002] Smart terminals such as mobile phones need to communicate through the mobile communication network provided by operators. They can also achieve communication connections between smart devices through various methods such as Wireless Fidelity (WIFI), Bluetooth, infrared, etc. For mobile phones, communication signals are sent and received through antennas. Due to the various communication methods of mobile phones, more antennas need to be set up inside the mobile phone. Each antenna is electrically connected to the RF module on the printed circuit board through the antenna feed point.

[0003] At present, when the antenna is set in a mobile phone, the metal frame of the mobile phone can be cut to form an antenna. However, with the development of 5G technology, more antennas need to be installed in the mobile phone, which makes the distribution of multiple antennas in the mobile phone particularly difficult. Especially for foldable screen mobile phones, the main and secondary screens of the mobile phone need to be unfolded and folded, which makes the antenna setting in the foldable screen mobile phone more difficult. Therefore, the antenna setting of foldable screen mobile phones is an issue that needs to be urgently solved in the industry. Summary of the invention

[0004] An embodiment of the present application provides an electronic device that implements antenna settings for a foldable electronic device, thereby solving the problem of difficulty in antenna settings for existing foldable screen mobile phones.

[0005] An embodiment of the present application provides an electronic device, including:

[0006] A first metal middle frame, a second metal middle frame rotatably connected to one end of the first metal middle frame, a printed circuit board located on the first metal middle frame, and a plurality of first antennas mounted on a carrier, wherein the carrier is mounted on the printed circuit board through a supporting member, and there is clearance between the plurality of first antennas and the printed circuit board.

[0007] The first antenna includes: a first feed point structure, one end of the first feed point structure is electrically connected to the first antenna, and the other end of the first feed point structure is electrically connected to a feeding point of the printed circuit board.

[0008] The invention comprises a first metal middle frame and a second metal middle frame which are rotatably connected to each other, a printed circuit board is arranged on the first metal middle frame, a plurality of first antennas are mounted on a carrier, the carrier is mounted on the printed circuit board through a support, there is clearance between the plurality of first antennas and the printed circuit board, the first antenna is electrically connected to a feeding point of the printed circuit board through a first feeding point structure, thereby realizing the antenna setting of the foldable electronic device, and solving the problem of difficulty in antenna setting of existing foldable screen mobile phones.

[0009] In a possible implementation manner, one end of the first feed point structure is electrically connected to the first antenna, specifically: one end of the first feed point structure is electrically connected to the first antenna by riveting.

[0010] One end of the first feed point structure is riveted to the first antenna for electrical connection, which, on the one hand, increases the pulling force between the first feed point structure and the first antenna, and avoids the problem of small pulling force between the copper sheet or the spring sheet and the antenna when welding the copper sheet or the spring sheet on the antenna. On the other hand, when the first feed point structure is riveted to the first antenna for electrical connection, there is no welding point, so the problem of the welding point on the antenna being susceptible to acid and alkali corrosion due to welding is avoided.

[0011] In a possible implementation, it also includes: a second antenna, the second antenna is located in the second metal middle frame, the second antenna includes a return point, and the return point is electrically connected to the second metal middle frame or to a circuit board grounding point of the second metal middle frame.

[0012] By arranging a second antenna on the second metal middle frame, the second antenna includes a return point, and the return point is electrically connected to the second metal middle frame or to a circuit board grounding point of the second metal middle frame. In this way, a plurality of first antennas are arranged on the first metal middle frame, and a second antenna is arranged on the second metal middle frame, thereby realizing the antenna arrangement on the first metal middle frame and the second metal middle frame in the foldable electronic device.

[0013] In a possible implementation manner, the first metal middle frame and the second metal middle frame are unfolded, the first antenna operates in a first frequency band, and the second antenna stops operating.

[0014] The second metal middle frame is folded with the first metal middle frame, the first antenna operates in the first frequency band, and the second antenna is a parasitic antenna of the first antenna.

[0015] In this way, after the first metal middle frame and the second metal middle frame are folded, the first antenna is the main antenna and the second antenna is the parasitic antenna of the first antenna. In this way, after the first metal middle frame and the second metal middle frame of the electronic device are folded, the problem of mutual interference between the antennas on the first metal middle frame and the second metal middle frame is avoided.

[0016] In a possible implementation, the support member is a metal member, the support member is grounded, a buckle is provided on the support member, and the buckle is grounded through the support member.

[0017] The side frame of the second metal middle frame is provided with a connection structure that is engaged with the buckle. After the second metal middle frame and the first metal middle frame are folded, the second metal middle frame and the first metal middle frame are engaged with the buckle through the connection structure and are grounded.

[0018] In this way, the first metal middle frame and the second metal middle frame share a common ground through the contact between the buckle and the connecting structure, so that the ground of the second antenna is closer to the ground of the first antenna. This can meet the requirement that the ground of the main antenna and the parasitic antenna is close, and can also meet the requirement that the ground of the first antenna and the second antenna is complete in multiple places, ultimately achieving the purpose of improving antenna performance.

[0019] In a possible implementation, the device further includes: an external antenna, wherein the external antenna includes:

[0020] A second feed point structure, wherein one end of the second feed point structure is detachably electrically connected to the external antenna, and the other end of the second feed point structure is electrically connected to a feeding point corresponding to the external antenna.

[0021] The second feed point structure enables a detachable external antenna to be provided on the electronic device, which can enhance the signal receiving and sending capability of the electronic device on the one hand, and ensure that the electronic device can communicate normally when the built-in antenna in the electronic device fails to work on the other hand.

[0022] In a possible implementation, the second feed point structure is riveted to a side frame of at least one of the first metal middle frame and the second metal middle frame, the side frame to which the second feed point structure is riveted is insulated from the second feed point structure, and the external antenna is detachably disposed on a side frame of at least one of the first metal middle frame and the second metal middle frame through the second feed point structure.

[0023] In this way, the reliability of fixing the second feeding point structure on the side frames of the first metal middle frame and / or the second metal middle frame is achieved.

[0024] In a possible implementation, the clearance is 0.2-3 mm, so that there is a clearance area between the first antenna and the printed circuit board, thereby avoiding interference of the printed circuit board with the first antenna.

[0025] In a possible implementation, the carrier, the multiple first antennas and the support are connected by injection molding, welding or fasteners to form an integrated antenna assembly, and the antenna assembly is arranged at the opposite end of one end where the first metal middle frame is connected to the second metal middle frame.

[0026] In this way, the carrier, the multiple first antennas and the support are integrated into one component. During installation, the antenna assembly is installed as a whole on the first metal middle frame through the support, thereby facilitating the installation of the multiple first antennas.

[0027] In a possible implementation, the method further includes:

[0028] A side end cover made of a non-metallic material, wherein the side end cover is arranged at the opposite end of one end where the first metal middle frame is connected to the second metal middle frame, and the side end cover is arranged on the plurality of first antennas, the carrier and the support.

[0029] By providing a side end cover at one end of the first metal middle frame, on the one hand, the camera and the flash can be arranged on the side end cover, and on the other hand, multiple first antennas, carriers and support members can be hidden under the side end cover, so that the camera, flash, first antenna, carrier and support member are concentrated on the side end cover.

[0030] In a possible implementation manner, the first antenna further includes:

[0031] A grounding portion, one end of the grounding portion is electrically connected to the first antenna, and the other end is electrically connected to the first metal middle frame or to a grounding point of the printed circuit board, wherein the first metal middle frame is electrically connected to the grounding point of the printed circuit board.

[0032] In this way, the first antenna is grounded through the grounding portion, and when the first antenna radiates, the first metal middle frame and the printed circuit board can serve as the radiation floor of the first antenna.

[0033] In a possible implementation, the other end of the first feeding point structure is electrically connected to the feeding point of the printed circuit board, including:

[0034] The other end of the first feed point structure is connected to the feed point of the printed circuit board, so that the other end of the first feed point structure is electrically connected to the feed point of the printed circuit board.

[0035] Alternatively, a spring sheet electrically connected to a feeding point on the printed circuit board is provided on the printed circuit board, and the other end of the first feeding point structure is connected to the spring sheet, so that the other end of the first feeding point structure is electrically connected to the feeding point via the spring sheet.

[0036] Alternatively, a heightening plate electrically connected to a feeding point on the printed circuit board is provided on the printed circuit board, and a spring sheet is provided on the heightening plate, and the other end of the first feeding point structure is electrically connected to the heightening plate through the spring sheet, so that when the clearance requirement between the first antenna and the printed circuit board is met, the spring sheet can be electrically connected to the other end of the first feeding point structure through the heightening plate.

[0037] In a possible implementation manner, the first feed point structure includes:

[0038] A first riveted portion and a first abutting portion are connected, wherein the first riveted portion is riveted to the assembly portion of the first antenna, and the first abutting portion is electrically connected to a feeding point of the printed circuit board.

[0039] In a possible implementation manner, the first feed point structure further includes:

[0040] The first positioning portion, the first riveting portion is located between the first positioning portion and the first abutting portion, so that the first feeding point structure can be pre-positioned in the horizontal direction before riveting through the first positioning portion, which facilitates the riveting of the first feeding point structure to the side frame of the second metal middle frame.

[0041] The first feeding point structure also includes: a first matching portion, which is located between the first positioning portion and the first riveted portion, and the width of the first matching portion is smaller than the width of the first positioning portion. Through the first matching portion, a space is reserved between the first riveted portion and the first positioning portion, so that the part squeezed during the riveting process of the first feeding point structure can be squeezed into the space, making the connection between the first feeding point structure and the first antenna more secure.

[0042] The first feeding point structure further includes: a limiting portion, which is provided on one end of the first abutting portion connected to the first riveted portion, and the first feeding point structure is limited in the longitudinal direction by the limiting portion.

[0043] In a possible implementation manner, the second feed point structure includes:

[0044] A second riveted portion and a second abutting portion are connected, the second riveted portion has a slot for engaging with the external antenna, and the second abutting portion is electrically connected to a feeding point corresponding to the external antenna, thereby achieving a detachable connection between the second feeding point structure and the external antenna.

[0045] In a possible implementation, the connection structure includes:

[0046] A third riveted portion, wherein the third riveted portion has an inner cavity engaged with the buckle, and the third riveted portion is connected to a side frame of the second metal middle frame.

[0047] In this way, the connection structure can be fixed to the side frame of the second metal middle frame through the third riveted part, and the inner cavity on the third riveted part can be engaged with the buckle.

[0048] In a possible implementation manner, the connection structure further includes:

[0049] A second positioning portion, wherein the second positioning portion is connected to the third riveting portion, and the second positioning portion is used to position the connection structure in a transverse direction.

[0050] In this way, the second positioning portion can be used to pre-position the connection structure in the transverse direction before riveting, so as to facilitate riveting the connection structure to the side frame of the second metal middle frame.

[0051] In a possible implementation, it also includes: a foldable display screen and a back cover, after the first metal middle frame and the second metal middle frame are unfolded, the back cover and the display screen are respectively located on both sides of the first metal middle frame and the second metal middle frame, and the back cover and the first antenna are located on the same side of the first metal middle frame and the second metal middle frame.

[0052] The back shell and the first antenna are located on one side of the first metal middle frame and the second metal middle frame, and the display screen is located on the other side of the first metal middle frame and the second metal middle frame. In this way, occupation of the display area by multiple first antennas is avoided, thereby ensuring that the electronic device can achieve a full screen after the first metal middle frame and the second metal middle frame are unfolded.

[0053] In a possible implementation, the electronic device is a foldable electronic device.

[0054] In this way, the electronic device can have a large screen when unfolded, and any one of the two display screens can be used after folding, so that the user has a better experience of the electronic device. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] Figure 1 A schematic diagram of the structure of an electronic device provided by an embodiment of the present application when unfolded;

[0056] Figure 2 A schematic diagram of the structure of an electronic device provided by an embodiment of the present application when it is closed;

[0057] Figure 3 A schematic diagram of the structure of a first metal middle frame, a printed circuit board, and a first antenna of an electronic device provided in an embodiment of the present application;

[0058] Figure 4 A schematic diagram of the disassembled structure of a first metal middle frame, a printed circuit board and an antenna assembly of an electronic device provided in one embodiment of the present application;

[0059] Figure 5 A schematic diagram of the disassembled structure of a printed circuit board and an antenna assembly in an electronic device provided in an embodiment of the present application;

[0060] Figure 6 A schematic diagram of a three-dimensional structure of an antenna assembly in an electronic device provided by an embodiment of the present application;

[0061] Figure 7 The antenna assembly and the circuit board of the electronic device provided in one embodiment of the present application are arranged along Figure 6 Schematic diagram of the cross-sectional structure in the AA direction;

[0062] Figure 8A schematic cross-sectional view of another structure of an antenna assembly and a circuit board in an electronic device provided by an embodiment of the present application;

[0063] Fig. 9 A schematic cross-sectional view of another embodiment of the antenna assembly and the circuit board in the electronic device provided by the present application;

[0064] Fig.10 A schematic diagram of a structure in which a first antenna and a circuit board are connected in an electronic device provided in an embodiment of the present application;

[0065] Fig.11 A schematic diagram of the structure of a first feeding point structure in an electronic device provided in an embodiment of the present application;

[0066] Fig.12 A schematic cross-sectional structure diagram of a first feeding point structure and a first antenna assembly in an electronic device provided in an embodiment of the present application;

[0067] Fig.13 for Fig.12 A schematic diagram of the cross-sectional structure of the first feed point structure and the first antenna after riveting is completed;

[0068] Fig.14 A schematic diagram of another cross-sectional structure of the first feed point structure and the first antenna assembly in the electronic device provided in one embodiment of the present application;

[0069] Fig.15 for Fig.14 A schematic diagram of the cross-sectional structure of the first feed point structure and the first antenna after riveting is completed;

[0070] Fig.16 A schematic diagram of the structure of a first metal middle frame and a second metal middle frame of an electronic device provided in an embodiment of the present application when unfolded;

[0071] Fig.17 A schematic diagram of the disassembled structure of an antenna assembly and a printed circuit board in an electronic device provided in an embodiment of the present application;

[0072] Fig.18 A schematic diagram of the structure of a first metal middle frame and a second metal middle frame of an electronic device provided in an embodiment of the present application when folded;

[0073] Fig.19 A schematic diagram of the split structure of the second metal middle frame and the second feeding point structure in the electronic device provided in one embodiment of the present application;

[0074] Fig. 20 The second metal middle frame of the electronic device provided in an embodiment of the present application is connected to the buckle on the first metal middle frame along the Fig.19 Schematic diagram of the cross-sectional structure in the BB direction;

[0075] Fig.21 A schematic diagram of the structure of a circuit board in a second metal middle frame of an electronic device provided in an embodiment of the present application;

[0076] Fig. 22 A schematic diagram of the structure of a second feeding point in an electronic device provided in an embodiment of the present application;

[0077] Fig.23 A schematic diagram of the cross-sectional structure of the second feeding point structure in the electronic device provided in one embodiment of the present application when assembled with the side frame of the second metal middle frame;

[0078] Fig.24 for Fig.23 A schematic diagram of a cross-sectional structure when the second feeding point structure and the side frame of the second metal middle frame are riveted together;

[0079] Fig.25 A schematic diagram of the split structure of a second metal middle frame, a circuit board, a third feeding point structure and an external antenna in an electronic device provided in an embodiment of the present application;

[0080] Fig.26 A schematic diagram of the cross-sectional structure of the side frame, circuit board, third feeding point structure and external antenna of the second metal middle frame of the electronic device provided in one embodiment of the present application when assembled;

[0081] Fig. 27 for Fig.26 Schematic diagram of the cross-sectional structure when the external antenna is connected to the third feed point structure.

[0082] Description of reference numerals:

[0083] 10-first metal middle frame; 20-printed circuit board; 21-heightening board; 22, 22a, 104-spring;

[0084] 30-antenna assembly; 31-first antenna; 31a-assembly portion; 31b-ground portion;

[0085] 31c-limiting step; 32-bearing member; 33-supporting member; 23, 24, 35, 34-mounting holes;

[0086] 301-first mounting portion; 302-second mounting portion; 40a-first feeding point structure; 41-first positioning portion;

[0087] 42-first matching portion; 43-first riveting portion; 44-limiting portion; 45-first abutting portion;

[0088] 46-plating layer; 50-rotating member; 100-second metal middle frame; 101-side frame;

[0089] 1011-groove; 1011a, 1011b-assembly holes; 1011c-limiting structure; 1012-through hole;

[0090] 102-second antenna; 1021-return point; 103, 20a-circuit board; 40b-connection structure;

[0091] 401-second positioning portion; 402-third riveting portion; 403-outer edge; 404-inner cavity;

[0092] 405-second matching portion; 40c-second feeding point structure; 402c-second riveting portion; 404c-slot;

[0093] 405c-second abutment portion; 201-buckle; 202-button; 203-side end cover; 204-camera;

[0094] 205-flashlight; 206-power interface; 300-external antenna; 310-clamping part. DETAILED DESCRIPTION

[0095] The terms used in the implementation method part of this application are only used to explain the specific embodiments of this application, and are not intended to limit this application. The implementation method of the embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0096] An electronic device provided in an embodiment of the present application includes but is not limited to a mobile phone, a tablet computer, a laptop computer, an ultra-mobile personal computer (UMPC), a handheld computer, a walkie-talkie, a netbook, a POS machine, a personal digital assistant (PDA), a wearable device, a virtual reality device, a wireless USB flash drive, a Bluetooth speaker / headphone, or a mobile or fixed terminal with an antenna, such as a car front-end.

[0097] In the embodiments of the present application, a mobile phone is taken as an example of the above-mentioned electronic device for description. The mobile phone provided in the embodiments of the present application may be a foldable mobile phone. Figure 1 and Figure 2 The structures of the foldable mobile phone when unfolded and closed are shown respectively, see Figure 1As shown, the mobile phone may include: a first metal middle frame 10 and a second metal middle frame 100, and the first metal middle frame 10 and the second metal middle frame 100 may be rotatably connected via a rotating member 50 (for example, the rotating member 50 may be a rotating shaft, a hinge or a flexible plate). In this way, the first metal middle frame 10 and the second metal middle frame 100 in the mobile phone can be folded and unfolded around the rotating member 50. It should be understood that the folding mobile phone may also include a display screen and a back shell, wherein the display screen and the back shell are respectively located on the front and back sides of the first metal middle frame and the second metal middle frame. The display screen is a bendable flexible display screen, and the back shell is also a bendable flexible plate.

[0098] In the embodiment of the present application, the first metal middle frame 10 and the second metal middle frame 100 can be as follows: Figure 1 In other examples, the first metal middle frame 10 and the second metal middle frame 100 can also be folded up and down, diagonally or at any other angle. It can be understood that Figure 1 The mobile phone shown in the figure includes two metal middle frames, a first metal middle frame 10 and a second metal middle frame 100, to achieve folding of two display screens in the mobile phone. In other examples, the mobile phone may also include three metal middle frames, so that the three display screens in the mobile phone can be folded.

[0099] Among them, one of the first metal middle frame 10 and the second metal middle frame 100 can be a metal middle frame corresponding to the main screen of the mobile phone, and the other can be a metal middle frame corresponding to the secondary screen of the mobile phone. For example, the first metal middle frame 10 can be a main middle frame corresponding to the main screen, and the second metal middle frame 100 can be a secondary middle frame corresponding to the secondary screen. When folding, the secondary middle frame is folded onto the main middle frame. When the secondary middle frame is folded onto the main middle frame, the main screen and the secondary screen of the mobile phone can be opposite to each other, or the main screen and the secondary screen of the mobile phone can be separated from each other. In the embodiment of the present application, the first metal middle frame 10 and the second metal middle frame 100 are arranged along Figure 1 After folding in the direction of the arrow in the figure, the main screen and the sub-screen of the phone face away from each other, that is, the front and back of the phone are both display screens after the phone is folded. At this time, the user can use the main screen for display or the sub-screen for display.

[0100] In the embodiment of the present application, the first metal middle frame 10 is used as the main middle frame and the second metal middle frame 100 is used as the secondary middle frame as an example for description. Figure 1 As shown, one side of the first metal middle frame 10 is connected to the second metal middle frame 100, and a side end cover 203 is provided on the other side of the first metal middle frame 10. When the second metal middle frame 100 is folded onto the first metal middle frame 10, the side end cover 203 can be flush with the display screen on the second metal middle frame 100.

[0101] In the embodiment of the present application, in order to prevent the second metal middle frame 100 and the first metal middle frame 10 from automatically opening after being folded, specifically, Figure 1 As shown, a button 202 is provided on the side end cover 203, and a buckle 201 is provided below the button 202. One end of the buckle 201 extends outward from the inner side of the side end cover 203, and the button 202 can drive the buckle 201 to move. Correspondingly, a bayonet (not shown) that cooperates with the buckle 201 is provided on the second metal middle frame 100, so that when the second metal middle frame 100 is folded onto the first metal middle frame 10, the buckle 201 is snapped into the bayonet to achieve the purpose of locking the second metal middle frame 100. When the second metal middle frame 100 needs to be opened, at this time, the button 202 is pressed downward, and the button 202 drives the buckle 201 to disengage from the bayonet, and the second metal middle frame 100 can be unfolded outward. Therefore, in the embodiment of the present application, the button 202, the buckle 201 and the bayonet cooperate to achieve the snap-fit ​​effect between the second metal middle frame 100 and the first metal middle frame 10 after folding, thereby preventing the second metal middle frame 100 from warping upward when folded onto the first metal middle frame 10 and affecting the user's use of the mobile phone's secondary screen.

[0102] Among them, in the embodiment of the present application, in order to achieve the purpose of having a high screen-to-body ratio when the mobile phone is unfolded, as Figure 2 As shown, the camera 204 and the flash 205 can be arranged on the side end cover 203. Figure 2 In the embodiment of the present application, four cameras 204 are arranged at intervals at the top of the side cover 203. It should be noted that the number of cameras 204 includes but is not limited to 4, and three cameras 204 can also be arranged. In the embodiment of the present application, the camera 204 and the flash 205 are arranged on the side cover 203. In this way, when the mobile phone is unfolded, the display surface avoids the problem of reducing the screen-to-body ratio caused by the arrangement of the camera 204 and the flash 205. Therefore, in the embodiment of the present application, the purpose of the full-screen mobile phone is achieved and the screen-to-body ratio is improved. Figure 2 As shown, a power interface 206 is provided at a position near the side end cover 203 on the bottom frame of the first metal middle frame 10, that is, in this embodiment, the power interface 206 is arranged near the bottom edge of the mobile phone, so that when the user is charging, the power cord is located at the edge of the mobile phone, which is not easy to affect the user's use of the mobile phone.

[0103] In order to ensure normal communication of electronic devices, multiple antennas are often provided in the electronic devices. In the embodiment of the present application, the scenario of the built-in antenna in the first metal middle frame 10 is set as scenario one, the scenario of the built-in antenna in both the first metal middle frame 10 and the second metal middle frame 100 is set as scenario two, and the scenario of the external antenna in at least one of the first metal middle frame 10 and the second metal middle frame 100 is set as scenario three.

[0104] Below, the structure of the foldable mobile phone is described for scenario one, scenario two, and scenario three respectively.

[0105] Scene 1

[0106] See also Figure 3 As shown, a plurality of first antennas 31 are provided in the first metal middle frame 10, and the plurality of first antennas 31 are spaced apart along the side of the first metal middle frame 10 close to the side end cover 203. For example, the plurality of first antennas 31 are located below the side end cover 203, and the plurality of first antennas 31 are spaced apart in sequence from one end of the side end cover 203 where the camera 204 is provided to the end close to the power interface 206. It should be noted that, since metal materials may interfere with the first antenna 31, in order to prevent the side end cover 203 from interfering with the electromagnetic waves generated by the first antenna 31, the side end cover 203 is made of non-metallic materials, for example, the side end cover 203 is made of plastic materials, so that when the plurality of first antennas 31 are located below the side end cover 203, the side end cover 203 will not affect the electromagnetic waves generated by the first antenna 31.

[0107] In the embodiment of the present application, multiple first antennas 31 are arranged at the side end of the first metal middle frame 10 and below the side end cover 203, so that the first antenna 31, camera 204, flash 205 and button 202 are concentrated at the side end cover 203, which, on the one hand, avoids the occupation of the display area of ​​the folding mobile phone by the first antenna 31, camera 204, diffuser and button 202, so that the folding mobile phone can achieve a full screen when unfolded. The main screen of the mobile phone can also achieve a full screen when the mobile phone is folded. On the other hand, the reasonable setting of the antenna in the folding mobile phone is realized, thereby solving the problem that the antenna is not easy to arrange in the folding mobile phone in the prior art.

[0108] In the embodiment of the present application, the operating frequency bands of the multiple first antennas 31 may be low frequency (700-960 MHz), medium frequency (1.71-2.2 GHz) and high frequency (2.3-2.7 GHz). In the embodiment of the present application, the multiple first antennas 31 may be single-frequency antennas, for example, the operating frequency band of one of the first antennas 31 is (700-960 MHz), the operating frequency band of another first antenna 31 may be (1.71-2.2 GHz), and the operating frequency band of the remaining first antenna 31 may be (2.3-2.7 GHz). Alternatively, some of the first antennas 31 in the multiple first antennas 31 are multi-frequency antennas, and some of the first antennas 31 are single-frequency antennas, for example, one of the first antennas 31 is a medium-high frequency antenna (1.71-2.7 GHz), and the operating frequency bands of the first antenna 31 may be (1.805-2.2 GHz) and (2.3-2.69 GHz). In the embodiment of the present application, the operating frequency bands of the multiple first antennas 31 may be designed according to actual applications, and the embodiment of the present application does not limit this. It should be noted that the operating frequency bands of the multiple first antennas 31 can cover medium, high and low frequency bands (for example, low frequency is 700-960 MHz, medium frequency is 1.71-2.2 GHz, and high frequency is 2.3-2.7 GHz), so that electronic devices can communicate normally.

[0109] For example, Figure 3 As shown, the number of the first antennas 31 can be 11. In the embodiment of the present application, the first antennas 31 can be multiple-input multiple-output (MIMO) antennas, Bluetooth antennas, global positioning system (GPS) antennas, WIFI antennas and long-term evolution (LTE) antennas. In the embodiment of the present application, the operating frequency bands of the MIMO antenna can be (700-960MHz), (1.7-2.2GHz) and (2.3-2.6GHz), the operating frequency bands of the Bluetooth antenna can be (2400-2500MHz), the operating frequency bands of the GPS antenna can be (1575-1602MHz), the operating frequency bands of the WIFI antenna can be (2400-2500MHz), and the operating frequency bands of the LTE antenna can be (824-960MHz), (1710-2170MHz) and (2500-2690MHz).

[0110] In the embodiment of the present application, with the development of 5G technology, some of the first antennas 31 in the multiple first antennas 31 may also be 5G antennas, such as 5G WIFI antennas or 5G MIMO antennas. When some of the first antennas 31 are 5G antennas, the operating frequency bands of the 5G antennas may be (3300-3600 MHz) and (4800-5000 MHz).

[0111] Among them, in the embodiments of this application, see Figure 4 As shown, multiple first antennas 31 can be arranged on a carrier 32, and the carrier 32 and the multiple first antennas 31 form an integral structure installed on the first metal middle frame 10, which facilitates the installation of multiple first antennas 31. It should be understood that since the first antenna 31 is a metal part, in order to prevent interference with the first antenna 31, the carrier 32 is a non-metallic material, for example, it can be plastic. In the embodiment of the present application, the multiple first antennas 31 and the carrier 32 can be an integral structure, for example, the multiple first antennas 31 and the carrier 32 can form an integral structure through a nano injection molding process. In this way, the integral structure has a metal area and a non-metal area, wherein the metal area can be used as the first antenna 31, and the non-metal area can be used as the carrier 32. When installing the first antenna 31 and the carrier 32, a mounting hole can be opened on the carrier 32 for fixing, thereby facilitating the installation of the first antenna 31. Of course, it can also be installed in other ways, such as welding and other ways.

[0112] In the embodiment of the present application, when the first antenna 31 and the carrier 32 form an integral structure and are installed in the first metal middle frame 10, the first antenna 31 can be supported to a certain height by the support member 33 to ensure that there is a certain clearance below the first antenna 31. The clearance can be 0.2-3mm, for example, the clearance can be 0.5mm or 1.5mm. The support member 33 supports the integral structure formed by the first antenna 31 and the carrier 32. The support member 33 can be a metal member or a non-metal member. In the embodiment of the present application, Figure 4 As shown, the support member 33, the carrier 32 and the plurality of first antennas 31 form a strip-shaped antenna assembly 30, that is, the support member 33, the carrier 32 and the plurality of first antennas 31 may be an integral structure.

[0113] Among them, the support member 33, the carrier member 32 and the plurality of first antennas 31 can be formed into an integrated antenna assembly 30 by a nano injection molding process. When installed in this way, the antenna assembly 30 is supported by the support member 33 on the first metal middle frame 10. It should be noted that when the support member 33 is a non-metallic material, a part of the support member 33 can be extended to form the support member 33. When the support member 33 is a metal member, the support member 33 and the first antenna 31 are separated by the carrier member 32, such as Figure 4 As shown, the multiple first antennas 31 and the support member 33 are separated by the carrier 32. Of course, the support member 33, the carrier 32 and the multiple first antennas 31 can also be installed by other methods, such as welding.

[0114] In the embodiment of the present application, a printed circuit board 20 may be provided between the antenna assembly 30 and the first metal middle frame 10. The antenna assembly 30 is provided above the printed circuit board 20 through a support member 33. Specifically, Figure 5 and Figure 6 As shown, the two ends of the support member 33 are respectively provided with a first mounting portion 301 and a second mounting portion 302, and the first mounting portion 301 and the second mounting portion 302 are respectively fixed to the mounting holes 24 and the mounting holes 23 on the printed circuit board 20 by fasteners (such as screws). In this way, the antenna assembly 30 is suspended and installed above the printed circuit board 20. When the support member 33 is a metal member, at this time, the two ends of the support member 33 can be grounded by contacting the printed circuit board 20 through the first mounting portion 301 and the second mounting portion 302. It should be noted that a printed circuit board 20 is arranged between the antenna assembly 30 and the first metal middle frame 10, and a part of the printed circuit board 20 is located between the antenna assembly 30 and the first metal middle frame 10, and the rest of the printed circuit board 20 can also be located at the top and bottom of the first metal middle frame 10, so that the devices at the top and bottom of the mobile phone can be arranged on the printed circuit board 20.

[0115] In the embodiment of the present application, the antenna assembly 30 extends from the top end to the bottom end of the first metal middle frame 10. Figure 5 As shown, the areas of the antenna assembly 30 that are opposite to the camera 204 and the flash 205 are respectively provided with mounting holes 35 and 34 for assembling the flash 205 and the camera 204, so that when the camera 204 and the flash 205 are installed, the camera 204 and the flash 205 can be installed through the mounting holes 34 and 35.

[0116] In the embodiment of the present application, when the first antenna 31 is working, the feeding point feeds a high-frequency current to the first antenna 31. The feeding point can be set on the printed circuit board 20, and the first antenna 31 is electrically connected to the feeding point, so that the printed circuit board 20 feeds a high-frequency current to the first antenna 31 through the feeding point, and the high-frequency current forms an electromagnetic wave on the first antenna 31 and is emitted outward. In the embodiment of the present application, Figure 5As shown, the first antenna 31 includes: a first feed point structure 40a, one end of the first feed point structure 40a is electrically connected to the first antenna 31, for example, the electrical connection can be achieved by riveting, and the other end of the first feed point structure 40a is electrically connected to the feed point on the printed circuit board 20. Among them, when the first antenna 31 is connected to one end of the first feed point structure 40a by riveting, a large pulling force is achieved between the first feed point structure 40a and the first antenna 31, avoiding the problem of a small pulling force between the copper sheet or the shrapnel and the antenna when welding the copper sheet or the shrapnel on the antenna. Since the first feed point structure 40a is riveted to the first antenna 31, there is no welding point, so the problem of the welding point on the antenna being susceptible to acid and alkali corrosion due to welding is avoided.

[0117] It should be understood that the first feed point structure 40a can be a metal part. For example, the material of the first feed point structure 40a can be copper, with a yield strength of 600 MPa, a hardness of 280 HV, and a magnetic permeability <1.01. The first feed point structure 40a can be a columnar structure. Compared with the copper sheet or spring sheet feed point structure in the prior art, when the first feed point structure 40a is a columnar structure, the structural reliability is high. Among them, the first feed point structure 40a can be, for example, a rivet. In other examples, the first feed point structure 40a can also be a structure of other shapes.

[0118] In the embodiment of the present application, the material of the first antenna 31 can be aluminum (for example, AL6013). In the embodiment of the present application, the first feed point structure 40a and the first antenna 31 can be directly riveted, so that they are not affected by the welding performance between the materials. The first antenna 31 and the first feed point structure 40a can be made of a variety of materials.

[0119] When the first antenna 31 is riveted to the first feed point structure 40a, the thickness of the riveted region of the first antenna 31 and the first feed point structure 40a can be thickened, so as to facilitate the riveting of the first feed point structure 40a and the first antenna 31. It should be noted that the materials of the first feed point structure 40a and the first antenna 31 can also be replaced according to specific circumstances, but the hardness of the first feed point structure 40a can be higher than the hardness of the first antenna 31, so as to achieve the first feed point structure 40a being riveted to the first antenna 31.

[0120] In the embodiment of the present application, when the first feed point structure 40a is riveted to the first antenna 31, a pressure riveting method is specifically adopted for the riveting, that is, the first feed point structure 40a is pressed into the first antenna 31 by a pressure riveting machine.

[0121] Among them, the electrical connection between the first feed point structure 40a and the feed point on the printed circuit board 20 can be achieved in a variety of ways. In a possible implementation, since the first antenna 31 is located above the printed circuit board 20, and the printed circuit board 20 has metal traces and metal devices, in order to avoid the interference of the metal traces on the printed circuit board 20 on the first antenna 31, there is a certain interval between the first antenna 31 and the printed circuit board 20 to ensure that there is a clearance of 0.2-3mm between the first antenna 31 and the printed circuit board 20. In the embodiment of the present application, the minimum height H between the printed circuit board of the first antenna 31 and the printed circuit board 20 can be 0.2-3mm, for example, the minimum height H between the first antenna 31 and the printed circuit board 20 can be 0.5mm, or 1.5mm, so that the required clearance between the first antenna 31 and the printed circuit board 20 can be ensured, thereby improving the radiation efficiency of the first antenna 31.

[0122] See also Figure 7 As shown, a mounting portion 31a is provided on a surface of the first antenna 31 facing the printed circuit board 20, and the mounting portion 31a can be a blind hole or a through hole, and one end of the first feed point structure 40a is riveted to the mounting portion 31a of the first antenna 31. The other end of the first feed point structure 40a faces the printed circuit board 20. Among them, a heightening plate 21 can be provided on the printed circuit board 20, and the heightening plate 21 can be, for example, a printed circuit board (PCB). The heightening plate 21 is electrically connected to the feeding point on the printed circuit board 20, and a spring 22 can be provided on the heightening plate 21, and the spring 22 is electrically connected to the feeding point on the printed circuit board 20 through the heightening plate 21. The other end of the first feed point structure 40a abuts against the spring 22, so that the first antenna 31 is connected to the feeding point of the printed circuit board 20 through the first feed point structure 40a, the spring 22 and the heightening plate 21.

[0123] In the embodiment of the present application, the spring piece 22 may be an elastic device. If the spring piece 22 is connected to the feeding point on the printed circuit board 20, the spring piece 22 may not be able to abut against the first feeding point structure 40a. The heightening plate 21 is provided on the printed circuit board 20 to ensure that the spring piece 22 abuts against the first feeding point structure 40a under the premise of ensuring that there is a clearance between the first antenna 31 and the printed circuit board 20. The heightening plate 21 can play the role of abutting the spring piece 22 against the first feeding point structure 40a, and can also achieve the role of matching the clearance for the first antenna 31.

[0124] Among them, in the embodiment of the present application, a heightening plate 21 electrically connected to the feeding point is provided on the printed circuit board 20, and the spring 22 is provided on the heightening plate 21, so that the heightening plate 21 is separated from the printed circuit board 20. When there are many wirings around the feeding point of the printed circuit board 20, the heightening plate 21 is used to ensure that the spring 22 and the wirings around the feeding point of the printed circuit board 20 are spaced a certain distance apart, thereby ensuring that there is a certain clearance between the spring 22 and the printed circuit board 20. Therefore, the heightening plate 21 provided in the embodiment of the present application can also ensure that there is clearance between the spring 22 and the main board 20.

[0125] In the embodiment of the present application, the height of the height-enhancing plate 21 may be 0.4-1 mm, for example, 0.5 mm or 0.8 mm.

[0126] In another possible implementation, Figure 8 As shown, the other end of the first feed point structure 40a can abut against the feed point area on the printed circuit board 20. In the embodiment of the present application, the other end of the first feed point structure 40a can directly abut against the feed point on the printed circuit board 20.

[0127] In another possible implementation, Fig. 9 As shown, a spring piece 22 is provided on the printed circuit board 20, and the spring piece 22 is electrically connected to the feeding point on the printed circuit board 20, and the other end of the first feeding point structure 40a abuts the spring piece 22. In the embodiment of the present application, the first antenna 31 is connected to the feeding point of the printed circuit board 20 through the first feeding point structure 40a and the spring piece 22. In the embodiment of the present application, the spring piece 22 can be a stainless steel sheet, which is connected to the spring piece 22 through the feeding point on the printed circuit board 20, so that the first feeding point structure 40a abuts against the stainless steel spring piece 22, which avoids the first feeding point structure 40a directly abutting against the feeding point. As the feeding point is oxidized or corroded, the feeding point and the first feeding point structure 40a have a poor contact problem.

[0128] In the embodiment of the present application, the spring 22 and the feeding point of the printed circuit board 20 can be connected by welding, SMT patch or locking screws.

[0129] In the embodiment of the present application, the first antenna 31 is grounded. Fig.10, the first antenna 31 also includes a grounding portion 31b, and the grounding portion 31b can be electrically connected to the grounding point on the printed circuit board 20. Or because the first metal middle frame 10 is connected to the grounding point of the printed circuit board 20, the first metal middle frame 10 is the reference ground, so the first grounding portion 31b can be directly connected to the first metal middle frame 10 to achieve grounding. In the embodiment of the present application, the grounding portion 31b can be a portion of the first antenna 31 extending toward the printed circuit board 20 or toward the first metal middle frame 10, or the grounding portion 31b can also be a first feeding point structure 40a, for example, the first antenna 31 includes two first feeding point structures 40a, one of which is used to be electrically connected to the feeding point on the printed circuit board 20, and the other is grounded as a grounding feeding point, or the grounding portion 31b can also be a copper sheet, one end of the copper sheet is connected to the first antenna 31 by welding or fasteners, and the other end is grounded. When the grounding portion 31 b is grounded, a spring sheet can be welded on the grounding point on the printed circuit board 20 or the first metal middle frame 10 , and the grounding portion 31 b abuts against the spring sheet to achieve grounding.

[0130] For example, Fig.11 As shown, the first feed point structure 40a may include a first riveted portion 43 and a first abutting portion 45 connected to the first riveted portion 43 at one end. The first riveted portion 43 is used to be riveted to the assembly portion 31a of the first antenna 31, and the first abutting portion 45 is used to abut against the feeding point on the printed circuit board 20 or the spring sheet 22 on the printed circuit board 20. In order to make the first feed point structure 40a and the first antenna 31 more tightly riveted, specifically, as shown in FIG. Fig.11 As shown, the outer surface of the first riveted portion 43 has a serrated knurling, so that when riveted, the contact surface between the first feed point structure 40a and the inner wall of the assembly portion 31a of the first antenna 31 is increased, so that the first feed point structure 40a and the first antenna 31 are riveted more tightly.

[0131] In the embodiment of the present application, in order to enhance the electrical connection performance between the first abutting portion 45 and the spring 22, specifically, Fig.11 As shown, a plating layer 46 is added to one end of the first abutting portion 45 abutting against the spring 22. The plating layer 46 can be a nickel-plated layer (thickness of 3 to 5 μm) or a gold-plated layer (thickness ≥ 0.25 μm), thereby achieving a good electrical connection between the first feeding point structure 40a and the spring 22.

[0132] In the embodiment of the present application, in order to pre-install the first feed point structure 40a on the first antenna 31 before the first feed point structure 40a is riveted to the first antenna 31, Fig.11 As shown, the first feed point structure 40a further includes a first positioning portion 41, and the first positioning portion 41 is connected to one end of the first riveted portion 43. When installed, Fig.12As shown, the first positioning portion 41 is pre-positioned with the assembly portion 31a of the first antenna 31, and the first feed point structure 40a is pre-installed in the assembly portion 31a, so that the position of the first feed point structure 40a in the assembly portion 31a is limited in the horizontal direction (i.e., in the X and Y directions). During riveting, the first feed point structure 40a can be riveted into the assembly portion 31a along the first positioning portion 41, thereby achieving the purpose of accurate riveting between the first feed point structure 40a and the first antenna 31.

[0133] In the embodiment of the present application, in order to prevent the first feed point structure 40a from extending too far into the assembly portion 31a of the first antenna 31 during riveting, specifically, a limit is required between the first feed point structure 40a and the assembly portion 31a of the first antenna 31. In the embodiment of the present application, the first feed point structure 40a and the assembly portion 31a of the first antenna 31 can be limited in two ways. In one possible implementation, Fig.12 As shown, the assembly portion 31a of the first antenna 31 is a straight hole, and a limiting portion 44 is provided between the first riveting portion 43 and the first abutting portion 45. Fig.13 As shown, when the limiting portion 44 is stuck at the inlet edge of the assembly portion 31a, the first feeding point structure 40a is limited in the longitudinal direction to prevent one end of the first feeding point structure 40a from going too deep into the assembly portion 31a.

[0134] In another possible implementation, Fig.14 As shown, the assembly portion 31a of the first antenna 31 is two interconnected cavities, and a limiting step 31c is formed between the inner walls of the two cavities. Fig.15 As shown, the first positioning portion 41 is installed in the upper cavity of the assembly portion 31a, and the first riveted portion 43 is riveted to the inner wall of the lower cavity of the assembly portion 31a. When the first riveted portion 43 moves to the limiting step 31c, the limiting step 31c blocks the first feeding point structure 40a to prevent the first feeding point structure 40a from going too deep into the assembly portion 31a.

[0135] In the present application examples, see Fig.15 As shown, there is a first matching portion 42 with a width smaller than the first positioning portion 41 between the first positioning portion 41 and the first riveted portion 43, and the first matching portion 42 forms a reserved space between the first positioning portion 41, the first riveted portion 43 and the inner wall of the assembly portion 31a. When the first riveted portion 43 is riveted to the inner wall of the assembly portion 31a, during the mechanical extrusion process, part of the inner wall of the assembly portion 31a is squeezed upward into the reserved space by the first riveted portion 43. When the riveting is completed, the part squeezed into the reserved space also blocks the first positioning portion 41, thereby further ensuring a reliable connection between the first feeding point structure 40a and the first antenna 31.

[0136] In the embodiment of the present application, the first feeding point structure 40a can be processed as a whole using a turning process. During manufacturing, the diameter of the first positioning portion 41 can be 0.7-1.5mm, for example, 0.83mm, and the corresponding aperture of the assembly portion 31a can be 0.8-1.6mm, for example, 0.9mm. The outer diameter of the knurling on the first riveted portion 43 can be 0.9-1.7mm, for example, 1.2mm, and the inner diameter is 0.3-0.6mm, for example, 0.42mm. The diameter of the limiting portion 44 can be 1.0-2.0mm, for example, 1.5mm. The diameter of the first abutting portion 45 can be less than or equal to the diameter of the limiting portion 44. In the embodiment of the present application, the dimensions of the first feeding point structure 40a include but are not limited to the above-mentioned values.

[0137] Scene 2

[0138] In the embodiment of the present application, the first antenna 31 is disposed in the first metal middle frame 10. Fig.16 As shown, a second antenna 102 is provided in the second metal middle frame 100, the first metal middle frame 10 and the second metal middle frame 100 are connected via a rotating member 50 (which may be a rotating shaft), the first metal middle frame 10 and the second metal middle frame 100 are respectively located on both sides of the rotating member 50, wherein the first metal middle frame 10 is grounded by being connected to the grounding point of the printed circuit board 20. Since the second metal middle frame 100 is connected to the first metal middle frame 10 via the rotating member 50, the second metal middle frame 100 is also grounded via the rotating member 50, that is, the first metal middle frame 10 and the second metal middle frame 100 are grounded at the rotating member 50, and the first metal middle frame 10 and the second metal middle frame 100 form a complete radiation reference ground. Among them, when the first metal middle frame 10 and the second metal middle frame 100 are unfolded, the first antenna 31 and the second antenna 102 are far apart at this time, so the interference between the first antenna 31 and the second antenna 102 is small, and the mutual influence is small. However, when the second metal middle frame 100 is folded onto the first metal middle frame 10, the first antenna 31 and the second antenna 102 are close apart at this time, and especially when the first antenna 31 and the second antenna 102 are of the same frequency (that is, the operating frequency bands of the first antenna 31 and the second antenna 102 are the same, or partially overlap, or do not overlap but the frequency range interval between the two antennas is small), there is signal interference between the first antenna 31 and the second antenna 102, which has a greater impact on the performance of the two antennas.

[0139] In the embodiment of the present application, the second antenna 102 may be a parasitic antenna of the first antenna 31. When the second antenna 102 is a parasitic antenna, the second antenna 102 may not be connected to the feeding point, and the second antenna 102 is not fed with high-frequency current through the feeding point, and the first antenna 31 couples and excites the second antenna 102. In the embodiment of the present application, the second antenna 102 includes a return point 1021 (see Fig. 20 ). The return point 1021 of the second antenna 102 can be connected to the second metal middle frame 100 to achieve grounding, or the return point 1021 of the second antenna 102 can be connected to the grounding point of the circuit board 103 set in the second metal middle frame 100 to achieve grounding, and the grounding point of the circuit board 103 is connected to the second metal middle frame 100, so as to finally achieve the grounding of the second antenna 102.

[0140] Among them, in the embodiments of the present application, Fig.16 As shown, the second antenna 102 is specifically located at the bottom end of the second metal middle frame 100, and the second metal middle frame 100 may include three frames, which may be a bottom frame, a top frame and a side frame 101, respectively. The second antenna 102 may be the bottom frame in the second metal middle frame 100 formed by a break, for example, part of the bottom frame of the second metal middle frame 100 serves as the second antenna 102.

[0141] Among them, in the embodiment of the present application, the working principles of the first antenna 31 and the second antenna 102 are specifically as follows: when the first metal middle frame 10 and the second metal middle frame 100 are unfolded (that is, the secondary screen and the main screen of the mobile phone are unfolded), at this time, due to the long distance between the first antenna 31 and the second antenna 102, the first antenna 31 may not be able to couple and stimulate the second antenna 102 to radiate, so the second antenna 102 does not work, and the first antenna 31 works as the main antenna in the first frequency band (for example, it can be low frequency: 700-960MHz, medium frequency: 1.71-2.2GHz, high frequency: 2.3-2.7GHz).

[0142] When the second metal middle frame 100 is folded onto the second metal middle frame 100 (i.e., the secondary screen and the main screen of the mobile phone are folded), the distance between the first metal middle frame 10 and the second metal middle frame 100 is relatively close, and the first antenna 31 couples and excites the second antenna 102, and the second antenna 102 works as a parasitic antenna of the first antenna 31. The first antenna 31 works in the first frequency band, and the second antenna 102 works in the second frequency band. The radiation of the second antenna 102 enhances the radiation of the first antenna 31, thereby improving the performance of the first antenna 31.

[0143] Among them, in the embodiment of the present application, when the first antenna 31 is a single-frequency antenna, the first frequency band of the first antenna 31 includes the frequency band corresponding to the single-frequency antenna, and when the first antenna 31 is a multi-frequency antenna, the first frequency band of the first antenna 31 includes multiple frequency bands corresponding to the multi-frequency antenna, and when the second antenna 102 operates in the second frequency band, the second frequency band can be a frequency band close to the first frequency band, or the second frequency band can be a frequency band with a large difference from the first frequency band. It should be noted that when the first frequency band of the first antenna 31 includes multiple frequency bands, the second frequency band of the second antenna 102 can be a frequency band close to or with a large difference from one of the frequency bands in the first frequency band, or the second frequency band of the second antenna 102 can include multiple frequency bands close to or with a large difference from multiple frequency bands in the first frequency band.

[0144] For example, the first frequency band of the first antenna 31 can be a low frequency (700-960MHz), and the second frequency band of the second antenna 102 can be a frequency band close to the low frequency band, for example, the second frequency band can be 824-960MHz, or the operating frequency band of the second antenna 102 can be a frequency band that is greatly different from the low frequency operating frequency band, for example, it can be a medium frequency (1710-2200MHz) or a high frequency (2.3-2.7GHz). It can be understood that since multiple first antennas 31 are set in the first metal middle frame 10, when the second metal middle frame 100 is folded with the first metal middle frame 10, one or more of the multiple first antennas 31 that are close to the second antenna 102 and can couple and excite the second antenna 102 can couple and excite the second antenna 102.

[0145] Among them, in the embodiment of the present application, when the second metal middle frame 100 is folded onto the first metal middle frame 10, if the second metal middle frame 100 and the first metal middle frame 10 are still grounded through the rotating member 50, then the path for the second antenna 102 to be grounded needs to go around the rotating member 50 to share the ground with the first metal middle frame 10. This makes the grounding path of the second antenna 102 and the first antenna 31 far away, and the loss is large when the antenna radiates, thereby affecting the radiation performance.

[0146] Therefore, in the embodiment of the present application, when the second metal middle frame 100 is folded onto the first metal middle frame 10, the first metal middle frame 10 and the second metal middle frame 100 are close to each other. Fig.17 As shown, the support member 33 in the antenna assembly 30 is connected to the mounting hole 24 and the mounting hole 23 of the printed circuit board 20 respectively through the first mounting portion 301 and the second mounting portion 302 to achieve grounding. At the same time, the grounding point of the printed circuit board 20 is electrically connected to the first metal middle frame 10, and the first metal middle frame 10 serves as the ground of the first antenna 31. In the embodiment of the present application, Fig.17As shown, the buckle 201 can be installed on the support member 33. Specifically, a spring sheet can be arranged between the buckle 201 and the support member 33 to achieve close contact, so that the buckle 201 is connected to the ground of the first antenna 31 through the support member 33. At this time, since the buckle 201 is engaged with the side frame 101 of the second metal middle frame 100, in the embodiment of the present application, a connecting structure 40b engaged with the buckle 201 is arranged on the side frame 101 of the second metal middle frame 100, that is, in the embodiment of the present application, the connecting structure 40b is engaged with the buckle 201, wherein the connecting structure 40b is connected to the side frame 101 of the second metal middle frame 100, so the connecting structure 40b is grounded to the second metal middle frame 100 through the side frame 101.

[0147] like Fig.18 As shown, when the second metal middle frame 100 is folded onto the first metal middle frame 10, at this time, the buckle 201 is engaged with the connection structure 40b, and the first metal middle frame 10 and the second metal middle frame 100 achieve a common ground nearby through the contact between the buckle 201 and the connection structure 40b, so that the ground of the second antenna 102 is closer to the ground of the first antenna 31. The first metal middle frame 10 and the second metal middle frame 100 achieve a double-sided common ground through the rotating member 50, and the contact between the buckle 201 and the connection structure 40b, which can meet the requirement of the main antenna and the parasitic antenna being close to each other, and can also meet the requirement of the first antenna 31 and the second antenna 102 being complete in multiple places, and finally achieve the purpose of improving the antenna performance.

[0148] Therefore, in the embodiment of the present application, by engaging the connecting structure 40b with the buckle 201, on the one hand, the purpose of preventing the second metal middle frame 100 and the second metal middle frame 100 from automatically unfolding after being folded is achieved; on the other hand, the first metal middle frame 10 and the second metal middle frame 100 are grounded nearby, so that the common ground path of the first antenna 31 and the second antenna 102 is shortened, radiation loss is reduced, and antenna performance is improved.

[0149] Among them, in the embodiment of the present application, the connection structure 40b can be applied to the electrical connection scenario of dynamic components in an active state, and the connection structure 40b provided in the embodiment of the present application can be applied to more scenarios.

[0150] Among them, in the embodiments of the present application, Fig.19As shown, in order to install the connection structure 40b, specifically, a groove 1011 is provided at a position corresponding to the buckle 201 of the side frame 101 of the second metal middle frame 100, and the connection structure 40b is pressed into the groove 1011 of the side frame 101 by riveting, so as to achieve a fixed connection between the connection structure 40b and the side frame 101. In the embodiment of the present application, the riveting method is used to increase the pulling force between the connection structure 40b and the side frame 101, the electrical connection reliability is high, and it is not easy to be corroded, thereby avoiding the problem that the pulling force between the side frame 101 and the feeding point structure is small and easy to be corroded due to welding between the connection structure 40b and the side frame 101.

[0151] Among them, in the embodiments of the present application, Fig. 20 As shown, a circuit board 103 may be disposed inside the second metal middle frame 100, and a grounding point of the circuit board 103 is electrically connected to the second metal middle frame 100. A grounding point 1021 of the second antenna 102 abuts against the spring 104, as shown in FIG. Fig.21 As shown, the grounding point on the circuit board 103 is electrically connected to the spring 104 , so that the return point 1021 of the second antenna 102 is connected to the grounding point of the circuit board 103 .

[0152] Among them, in the embodiments of the present application, Fig. 22 As shown, the connection structure 40b may include a third riveted portion 402, and an inner cavity 404 for the buckle 201 to be inserted is provided on one end surface of the third riveted portion 402, wherein the third riveted portion 402 is used to be fixed to the side frame 101 by pressure riveting, and the inner cavity 404 is used for the buckle 201 to achieve engagement. The depth and shape of the inner cavity 404 are specifically adjusted according to the buckle 201 and the form of the buckle 201. In the embodiment of the present application, as Fig. 22 As shown, the inner cavity 404 is a long strip-shaped groove 1011, the groove depth of the groove 1011 can be specifically 0.2-1.0mm, for example, 0.3mm, the wall thickness of the groove 1011 can be 0.2-0.8mm, for example, 0.4mm, and the length of the third riveted portion 402 can be 4-10mm, for example, 5.85mm, and the width can be 1.5-5mm, for example, 1.85mm. It should be noted that the dimensions of the third riveted portion 402 and the inner cavity 404 include but are not limited to the above dimensions.

[0153] Since the buckle 201 and the inner wall of the inner cavity 404 need to be electrically connected, a wear-resistant coating is provided on the inner wall (side wall and bottom wall) of the inner cavity 404 to ensure the reliability of the electrical connection, wherein the wear-resistant coating can be palladium nickel or rhodium ruthenium alloy. The buckle 201 and the inner cavity 404 can cooperate to have a resistance of less than 1 ohm after 100,000 frictions.

[0154] See also Fig. 22As shown, in order to ensure that the buckle 201 can be smoothly inserted into the inner cavity 404 , specifically, the opening of the inner cavity 404 has an outer edge 403 , and the end face of the outer edge 403 is an arc-shaped surface, which makes it easy for the buckle 201 to be inserted into the inner cavity 404 .

[0155] See also Fig. 22 As shown, the connection structure 40b further includes at least one second positioning portion 401, wherein: Fig. 22 Two second positioning parts 401 are shown in the figure, so that the connection structure 40b can be installed in the groove 1011 of the side frame 101 through the second positioning part 401. The connection structure 40b is positioned in the horizontal direction to prevent the second feed point from shaking back and forth and left and right in the groove 1011. It should be noted that the number of the second positioning parts 401 includes but is not limited to two, and can also be more than one. Among them, the positioning structure can be a cylindrical structure with a diameter of 0.9mm, and the spacing between the two positioning structures can be 3.8mm.

[0156] Fig.23 and Fig.24 The assembly process between the connecting structure 40b and the side frame 101 is shown. Fig.23 As shown, the groove 1011 of the side frame 101 has an assembly hole 1011a and an assembly hole 1011b respectively matched with two positioning structures. A limiting structure 1011c is formed between the two assembly holes 1011a and 1011b and the inner wall of the groove 1011, and the limiting structure 1011c has a longitudinal limiting effect on the third riveted part 402 to prevent the third riveted part 402 from being too stuck in the groove 1011.

[0157] like Fig.23 As shown, there is a second matching portion 405 with a width smaller than the positioning structure between the second positioning portion 401 and the third riveting portion 402. The function of the second matching portion 405 can refer to the function of the first matching portion 42 in the above scenario one.

[0158] During installation, first, the two second positioning portions 401 are pre-installed in the assembly holes 1011a and 1011b to achieve pre-positioning. Fig.24 As shown, the third riveting portion 402 is riveted into the groove 1011 to achieve a fixed connection between the connecting structure 40 b and the side frame 101 .

[0159] Among them, in the embodiment of the present application, the material of the connecting structure 40b can be stainless steel (SUS316-0), which is made by forging and CNC (program-controlled automatic machine tool) processes, and the magnetic permeability of the first feeding point structure 40a is <1.01, and the material of the second metal middle frame 100 and the side frame 101 can be aluminum (AL6013). If welding is used between the side frame 101 and the connecting structure 40b, the welding performance between aluminum and stainless steel is poor, so the pull-out force of the two is poor. In the embodiment of the present application, the side frame 101 and the connecting structure 40b are riveted, which avoids the problem of low pull-out force between the side frame 101 and the connecting structure 40b due to poor material welding performance.

[0160] Scene 3

[0161] In the embodiment of the present application, an external antenna 300 is disposed on at least one of the first metal middle frame 10 and the second metal middle frame 100. Fig.25 As shown, taking the second metal middle frame 100 as an example, the second metal middle frame 100 may include three frames, which may be a side frame 101, a top frame and a bottom frame, respectively. A circuit board 20a is arranged in the second metal middle frame 100, and the circuit board 20a has a feeding point, and a spring 22a is connected to the feeding point. Among them, the external antenna 300 may include a second feeding point structure 40c. The external antenna 300 is electrically connected to the spring 22a through the second feeding point structure 40c. Specifically, a through hole 1012 is opened on the side frame 101, and the second feeding point structure 40c is pressed into the through hole 1012 by riveting, and one end of the second feeding point structure 40c is abutted against the spring 22a, and the other end is detachably connected to the external antenna 300. Specifically, the external antenna 300 and the second feeding point structure 40c can be detachably connected by means of snap-fitting or threads. When the external antenna 300 is needed, the external antenna 300 is connected to one end of the second feeding point structure 40c, and the circuit board 20a feeds high-frequency current to the external antenna 300 through the feeding point, and the high-frequency current is radiated outward on the external antenna 300 in the form of electromagnetic waves.

[0162] It should be noted that when the side frame 101 of the second metal frame 100 is a metal frame, the second feeding point structure 40c and the through hole 1012 of the side frame 101 are insulated. For example, an insulating layer can be set on the outer surface of the second feeding point structure 40c, or an insulating layer can be set on the inner wall of the through hole 1012 to ensure that the high-frequency current fed into the feeding point on the circuit board 20a is transmitted to the external antenna 300 through the second feeding point structure 40c, and the high-frequency current forms an electromagnetic wave on the external antenna 300 that is radiated outward.

[0163] Among them, in scenario two, when the first metal middle frame 10 and the second metal middle frame 100 are unfolded, the first antenna 31 works and the second antenna 102 does not work. In the embodiment of the present application, the external antenna 300 is detachably connected to the second metal middle frame 100 through the second feed point structure 40c. After the first metal middle frame 10 and the second metal middle frame 100 are unfolded, the first antenna 31 in the first metal middle frame 10 works, the second antenna 102 on the second metal middle frame 100 does not work, and the external antenna 300 on the second metal middle frame 100 can work, thereby ensuring that the respective antennas of the two foldable metal middle frames can work when they are unfolded.

[0164] In a possible implementation, when the built-in antenna (e.g., the first antenna 31 and the second antenna 102) can meet the frequency band of normal communication, the external antenna 300 can be disconnected from the second feed point structure 40c. When the built-in antenna cannot meet the normal communication, the external antenna 300 can be connected through the second feed point structure 40c, and normal communication can be achieved through the external antenna 300. Alternatively, when the built-in antenna meets the requirements of normal communication, the external antenna 300 can also still be connected to the second feed point structure 40c. In the embodiment of the present application, the second feed point structure 40c serves as the feed point of the external antenna 300, and the switching of the built-in antenna and the external antenna 300 on the electronic device is achieved by disconnecting and connecting the external antenna 300 and the second feed point structure 40c.

[0165] in, Fig.26 and Fig. 27 The second feed point structure 40c, the external antenna 300 and the assembly structure with the circuit board 103 are shown. Fig.26 As shown, the second feeding point structure 40c may include a second riveted portion 402c, one end of the second riveted portion 402c has a slot 404c, and the external antenna 300 has a snap-fit ​​portion 310 snap-fitted with the slot 404c, as shown in FIG. Fig. 27 As shown, the external antenna 300 is connected to the second feed point structure 40c by engaging the engaging portion 310 with the engaging slot 404c. When disconnection is required, the engaging portion 310 can be pulled out from the engaging slot 404c to disconnect the external antenna 300 from the second feed point structure 40c.

[0166] Among them, see Fig.26 and Fig. 27As shown, the second feed point structure 40c also includes a second abutting portion 405c, one end of the second abutting portion 405c is connected to the second riveted portion 402c, and the other end abuts against the spring piece 22a. In this way, the electrical connection between the external antenna 300 and the feeding point of the circuit board 20a can be achieved. In the embodiment of the present application, the disconnection and connection of the second feed point structure 40c and the external antenna 300 make the second feed point structure 40c not limited to being used in the fixed connection scenario. The second feed point structure 40c and the connection structure 40b in scenario two can both be applied to the scenario of movable electrical connection. Compared with the welded feed point structure, the riveted feed point structure provided in the embodiment of the present application has more application scenarios, which can be applied to the fixed connection scenario and the movable connection scenario, thus meeting the requirements for the increase in scenarios that the feed point structure has to cope with when new technologies such as 5G are applied on a large scale.

[0167] Among them, in the embodiment of the present application, it should be noted that the external antenna 300 can be but is not limited to being set on the first metal middle frame 10 and the second metal middle frame 100. The external antenna 300 can also be set on the side frame of the metal middle frame of the non-folding mobile phone through the second feed point structure 40c.

[0168] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, or it can be an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0169] The terms "first", "second", "third", "fourth", etc. (if any) in the description and claims of the embodiments of the present application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0170] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the embodiments of the present application, rather than to limit them. Although the embodiments of the present application have been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. An electronic device, characterized in that: include: a first metal middle frame, a second metal middle frame rotatably connected to one end of the first metal middle frame, a printed circuit board located on the first metal middle frame, and a plurality of first antennas mounted on a carrier, wherein the carrier is mounted on the printed circuit board through a support, and a clearance is provided between the plurality of first antennas and the printed circuit board; The first metal middle frame and the second metal middle frame are connected via a rotating member, and the first metal middle frame and the second metal middle frame are respectively located on two sides of the rotating member; The first antenna comprises: a first feed point structure, one end of the first feed point structure is electrically connected to the first antenna, and the other end of the first feed point structure is electrically connected to the feeding point of the printed circuit board; Also included: second antenna; The second antenna is located in the second metal middle frame, and the second antenna includes a grounding point, and the grounding point is electrically connected to the second metal middle frame or to a circuit board grounding point of the second metal middle frame; The first metal middle frame and the second metal middle frame are unfolded, the first antenna operates in a first frequency band, and the second antenna stops operating; The second metal middle frame is folded with the first metal middle frame, the first antenna operates in the first frequency band, and the second antenna is a parasitic antenna of the first antenna.

2. The electronic device according to claim 1, characterized in that: One end of the first feed point structure is electrically connected to the first antenna, specifically: One end of the first feed point structure is electrically connected to the first antenna by riveting.

3. The electronic device according to claim 1 or 2, characterized in that: The support member is a metal member, the support member is grounded, a buckle is provided on the support member, and the buckle is grounded through the support member; The side frame of the second metal middle frame is provided with a connection structure that is engaged with the buckle. After the second metal middle frame and the first metal middle frame are folded, the second metal middle frame and the first metal middle frame are engaged with the buckle through the connection structure and are grounded.

4. The electronic device according to claim 1 or 2, characterized in that: Also includes: An external antenna, the external antenna comprising: A second feed point structure, wherein one end of the second feed point structure is detachably electrically connected to the external antenna, and the other end of the second feed point structure is electrically connected to a feeding point corresponding to the external antenna.

5. The electronic device according to claim 4, characterized in that: The second feeding point structure is riveted to a side frame of at least one of the first metal middle frame and the second metal middle frame, the side frame to which the second feeding point structure is riveted is insulated from the second feeding point structure, and the external antenna is detachably set on a side frame of at least one of the first metal middle frame and the second metal middle frame through the second feeding point structure.

6. The electronic device according to any one of claims 1, 2 and 5, characterized in that: The clearance is 0.2-3 mm.

7. The electronic device according to any one of claims 1, 2 and 5, characterized in that: The carrier, the plurality of first antennas and the support are connected by injection molding, welding or fasteners to form an integrated antenna assembly, and the antenna assembly is arranged at the opposite end of one end where the first metal middle frame is connected to the second metal middle frame.

8. The electronic device according to any one of claims 1, 2 and 5, characterized in that: Also includes: A side end cover made of a non-metallic material, wherein the side end cover is arranged at the opposite end of one end where the first metal middle frame is connected to the second metal middle frame, and the side end cover is arranged on the multiple first antennas, the carrier and the support.

9. The electronic device according to any one of claims 1, 2 and 5, characterized in that: The first antenna also includes: A grounding portion, one end of the grounding portion is electrically connected to the first antenna, and the other end is electrically connected to the first metal middle frame or to a grounding point of the printed circuit board, wherein the first metal middle frame is electrically connected to a grounding point of the printed circuit board.

10. The electronic device according to any one of claims 1, 2 and 5, characterized in that: The other end of the first feed point structure is electrically connected to the feed point of the printed circuit board, comprising: The other end of the first feed point structure is connected to the feed point of the printed circuit board, or, The printed circuit board is provided with a spring sheet electrically connected to a feeding point on the printed circuit board, and the other end of the first feeding point structure is connected to the spring sheet, or, The printed circuit board is provided with a heightening plate electrically connected to a feeding point on the printed circuit board, the heightening plate is provided with a spring sheet, and the other end of the first feeding point structure is electrically connected to the heightening plate through the spring sheet.

11. The electronic device according to any one of claims 1, 2 and 5, characterized in that: The first feed point structure comprises: A first riveted portion and a first abutting portion are connected, wherein the first riveted portion is riveted to the assembly portion of the first antenna, and the first abutting portion is electrically connected to a feeding point of the printed circuit board.

12. The electronic device according to claim 11, characterized in that: The first feed point structure further includes: a first positioning portion, wherein the first riveting portion is located between the first positioning portion and the first abutting portion; a first matching portion, the first matching portion is located between the first positioning portion and the first riveting portion, and a width of the first matching portion is smaller than a width of the first positioning portion; A limiting portion is provided on an end where the first abutting portion is connected to the first riveting portion.

13. The electronic device according to claim 4, characterized in that: The second feed point structure comprises: A second riveted portion and a second abutting portion are connected, wherein the second riveted portion has a slot for engaging with the external antenna, and the second abutting portion is electrically connected to a feeding point corresponding to the external antenna.

14. The electronic device according to claim 3, characterized in that: The connection structure comprises: A third riveted portion, wherein the third riveted portion has an inner cavity engaged with the buckle, and the third riveted portion is connected to a side frame of the second metal middle frame.

15. The electronic device according to claim 14, characterized in that: The connection structure also includes: A second positioning portion, wherein the second positioning portion is connected to the third riveting portion, and the second positioning portion is used to position the connection structure in a transverse direction.

16. The electronic device according to any one of claims 1, 2, 5, 13-15, characterized in that: Also includes: A foldable display screen and a back cover, after the first metal middle frame and the second metal middle frame are unfolded, the back cover and the display screen are respectively located on both sides of the first metal middle frame and the second metal middle frame, and the back cover and the first antenna are located on the same side of the first metal middle frame and the second metal middle frame.

17. The electronic device according to any one of claims 1, 2, 5, 13-15, characterized in that: The electronic device is a foldable electronic device.

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