Electronic equipment

Abstract

The embodiment of the invention discloses electronic equipment which can comprise handheld equipment, vehicle-mounted equipment, wearable equipment and terminal equipment or can be connected to any one of a wireless modem, a cellular phone, a smart phone, a personal digital assistant, a computer, a tablet personal computer, a notebook computer and the like. According to the embodiment of the invention, the first metal connecting arm is provided with the middle section in clearance arrangement, and the length of an electric loop of an antenna formed by the metal frame radiation section is equal to the sum of the length of the middle section and the section, located between the first connecting position and the second connecting position, of the metal frame radiation section. The middle section increases the total length of the antenna to a certain extent, the length of the antenna connected between the first feed end and the grounding end is expanded, electric signals radiated by the antenna are lengthened at low frequency, resonance can be low in the same matching state, and the purpose that the resonance is low under the condition that the radiation sections of the metal frame are the same in length is achieved.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of wireless transmission technology, and in particular, to an electronic device. Background Art

[0002] The antenna is one of the important components of electronic devices to realize communication functions. Currently, in order to reduce the internal space occupied by the antenna in electronic devices, the metal frame of the electronic device will be used as an antenna. The antenna formed by the metal frame is usually called a frame antenna.

[0003] When designing a frame antenna, not only the type and quantity of antennas must be considered to meet the use requirements of the electronic device, but also the layout of other related components of the electronic device, such as the shape and size of the battery, motherboard and other components. The design of the antenna is relatively complex. Especially for foldable electronic devices, due to the existence of the rotating shaft of the foldable electronic device, the length of the frame section of the foldable electronic device that can be used as an antenna is smaller, and the design difficulty of the frame antenna is relatively high. Summary of the invention

[0004] An embodiment of the present application provides an electronic device capable of increasing the electrical length of a radiation section of a metal frame.

[0005] An embodiment of the present application provides an electronic device, the electronic device comprising a first feeding terminal and a ground terminal, and further comprising:

[0006] A middle frame, wherein the middle frame comprises a metal frame radiation section, and the metal frame radiation section has a first connection position and a second connection position, which are respectively used to be electrically connected to the first feeding terminal and the grounding terminal;

[0007] A first metal connecting arm, a first connecting position and a first feeding terminal, a second connecting position and a grounding terminal are electrically connected to each other through the first metal connecting arm, and the first metal connecting arm has a middle section which is provided with a clearance from the surrounding metal body. The surrounding metal body includes metal parts such as a metal frame of the electronic device and metal parts on the main board. The first metal connecting arm can be located on the side of the radiation section of the metal frame facing the main board of the electronic device.

[0008] Compared with the prior art, in the case where the positions of the first feeding terminal and the grounding terminal remain unchanged, in the embodiment of the present application, there is a middle section with a clearance setting on the first metal connecting arm, and the electrical length of the antenna between the first feeding terminal and the grounding terminal is equal to the sum of the lengths of the metal section of the metal frame radiation section located between the first connection position and the second connection position and the middle section. The middle section increases the total length of the antenna to a certain extent, and realizes the extension of the length of the antenna connected to the first feeding terminal and the grounding terminal. In the embodiment of the present application, the middle section can make the low-frequency of the electrical signal radiated by the antenna longer, and the resonance can be lower under the same matching state, so that the resonance is lower when the length of the metal frame radiation section is the same, thereby solving the problem of insufficient electrical length under compact layout, resulting in high resonance and deteriorated efficiency.

[0009] In one example, the first connection position and the second connection position are spaced apart along the length direction of the metal frame radiation section, and at least a portion of the projection of the middle section on the metal frame radiation section is located between the first connection position and the second connection position. In this way, at least a portion of the projection of the middle section on the metal frame radiation section is located between the first connection position and the second connection position, so that the antenna structure formed is relatively compact.

[0010] In one example, the extension direction of the middle section is consistent with the length direction of the metal frame radiation section, so that the space in the length direction of the metal frame radiation section is fully utilized to obtain a longer middle section, further increasing the electrical length of the antenna formed by the metal frame radiation section.

[0011] In one example, the middle frame includes a receiving cavity, the metal frame radiation section also includes a side wall facing the receiving cavity, the side wall includes a first surface and a second surface, the second surface is recessed relative to the first surface toward a side away from the receiving cavity, there is a clear space gap between the middle section and the second surface, and the first metal connecting arm is in contact with the first surface and electrically connected. In the embodiment of the present application, the inner side wall of the metal frame radiation section (the side wall facing the receiving cavity is defined as the inner side wall) is set as a recessed structure, which can provide a clear space gap for the middle section, facilitating the clearance setting of the middle section.

[0012] In one example, the first metal connecting arm includes a first plate body, the first plate body has a predetermined length along the length direction of the metal frame radiation section, the plate surface of the first plate body is arranged opposite to the side wall, the first plate body includes an intermediate section and a first connecting portion electrically connected to the first surface, and the first connecting portion is located on a side of the intermediate section away from the ground end. In the embodiment of the present application, the plate surface of the first plate body is opposite to the side wall and extends along the length direction of the metal frame radiation section, so that the space occupied by the first metal connecting arm in the width direction of the middle frame can be minimized, thereby reducing the width size of the electronic device.

[0013] In one example, the end of the middle section away from the first connection portion has a second plate body, the second plate body is bent toward one side of the accommodating cavity, and the second plate body has a second connection portion electrically connected to the grounding end. The second plate body can be substantially perpendicular to the first plate body, and after the second plate body is bent, its plate surface contacts the grounding end, and the connection is relatively convenient.

[0014] In one example, a main board is also included, which is arranged in the accommodating cavity, and the surface of the second board body is opposite to the surface of the main board. In this way, the second board body occupies a relatively small space in the thickness direction of the electronic device, meeting the ultra-thin design concept of the electronic device.

[0015] In one example, the first plate body further includes a positioning section, which is connected to a side of the first connection portion away from the middle section, and the positioning section is connected and fixed to the side wall of the metal frame radiation section. The positioning section further increases the fixing area between the first plate body and the metal frame radiation section, which is beneficial to improving the reliability of the first plate body. The positioning section and the metal frame radiation section can be fixed by welding.

[0016] In one example, a first metal connecting arm is connected between a ground terminal and a second connecting position, a third connecting position is also provided on the metal frame radiation segment, the first connecting position, the second connecting position and the third connecting position are arranged in sequence along the length direction of the metal frame radiation segment, the electronic device further comprises a second feeding terminal, the ground terminal is located between the first feeding terminal and the second feeding terminal, the electronic device further comprises a second metal connecting arm, and the third connecting position is electrically connected to the second feeding terminal through the second metal connecting arm. In this way, while the antenna current loop path formed by the segment connected between the first feeding terminal and the ground terminal becomes longer, it will not affect the current loop length formed by the segment between the second feeding terminal and the ground terminal on the metal frame radiation segment, and in this embodiment, two or more feeding terminals are provided on the same metal frame radiation segment, so that different electrical signals can be loaded on the metal frame radiation segment to meet the different functional requirements of the electronic device.

[0017] In one example, the first metal connecting arm and the second metal connecting arm are connected and fixed or the two are an integrated structure. In the embodiment of the present application, the first metal connecting arm and the second metal connecting arm are connected and fixed, and the first metal connecting arm and the second metal connecting arm can be independent components, and the two are fixed by means of welding process or bonding process, and the first metal connecting arm and the second metal connecting arm are independent components and can be processed separately, and the processing technology is relatively simple.

[0018] The first metal connecting arm and the second metal connecting arm may both be in the form of antenna metal springs. The antenna springs have a simple structure and occupy a small space.

[0019] In one example, the first metal connecting arm includes a positioning section, which is connected to a side of the first connecting portion away from the middle section and extends to connect to the second metal connecting arm. In other words, the positioning section is located between the third connection position and the second connection position, and the positioning section is connected and fixed to the metal frame radiation section, which can further improve the fixing reliability of the first metal connecting arm and is conducive to enhancing the overall strength of the electronic device. The positioning section of the first metal connecting arm located between the third connection position and the second connection position can be welded and fixed to the metal frame radiation section.

[0020] In one example, the first metal connecting arm is welded and fixed to the metal frame radiation section, and the second metal connecting arm is welded and fixed to the third connection position. Both the first metal connecting arm and the second metal connecting arm are welded and fixed to the corresponding positions of the metal frame radiation section by welding. The welding connection has high reliability and occupies little space.

[0021] In one example, the first metal connecting arm is elastically electrically connected to the first feeding end, and the second metal connecting arm is elastically electrically connected to the second feeding end. The elastic electrical connection is beneficial to buffering the force at the connection position and improving the service life. The second metal connecting arm can be a metal spring to achieve elastic electrical connection. The elastic connection has a buffering effect, which can reduce the influence of external force on the connection position and ensure the reliability of the connection. The first metal connecting arm and the second metal connecting arm can also be in the form of metal springs to achieve elastic electrical connection. The metal spring is a metal sheet with greater elasticity, and its use strength and elasticity are relatively high.

[0022] In one example, the middle frame includes a metal frame and an intermediate metal plate, the metal frame is located at the periphery of the intermediate metal plate, the metal frame radiation section is a partial section of the metal frame, the grounding terminal is arranged on the intermediate metal plate, the electronic device includes a main board, and the grounding terminal is electrically connected to the grounding position of the main board. The second connecting portion of the first metal connecting arm is fixedly connected to the grounding terminal on the intermediate metal plate, and the connection is relatively convenient. The grounding terminal of the intermediate metal plate can be connected to the grounding position of the main board by elastic electrical connection.

[0023] In the embodiment of the present application, the middle section is separated from the middle metal plate and the metal frame radiation section by a predetermined distance to prevent the middle metal plate and the metal frame radiation section from interfering with the signal radiation of the middle section. The middle section and the middle metal plate and the metal frame radiation section can be approximately 1 mm apart. The middle section can be arranged between the metal frame and the middle metal plate. The ground terminal and the middle metal plate can be fixed by welding, and the fixing reliability is relatively high.

[0024] In one example, the middle frame further includes a plastic body, and the metal frame and the middle metal plate are connected to form an integral body through the plastic body. On the premise of meeting the use requirements of the electronic device, the plastic body is relatively light, which is conducive to reducing the overall weight of the electronic device. The metal frame and the middle metal plate can be integrated with the plastic body during the injection molding process.

[0025] In one example, the middle frame includes N sides connected in sequence, the metal frame radiation section is located at only one side, or the metal frame radiation section is located at two adjacent sides at the same time; wherein N is an integer greater than or equal to 2. The shape of the metal frame radiation section can be flexibly arranged according to usage requirements.

[0026] In one example, the electronic device is a foldable electronic device, the middle frame includes a first middle frame and a second middle frame, the foldable electronic device also includes a rotating shaft, the first middle frame and the second middle frame are respectively rotatably connected to both sides of the rotating shaft, and the frame of at least one of the first middle frame and the second middle frame has a metal frame radiation segment, each metal frame radiation segment and a first feeding end and a grounding end electrically connected to the metal frame radiation segment are all located on the same side of the rotating shaft, so that there is no need to use a special flexible transmission line to cross the rotating shaft to achieve the connection between the metal frame radiation segment and the first feeding end, which can not only simplify the structure of the foldable electronic device, reduce the thickness of the foldable electronic product, and reduce the use cost of the foldable electronic device, but also reduce the space occupied by the antenna in the middle frame accommodating cavity, which is conducive to optimizing the structure of other components of the electronic device, such as increasing the battery capacity, etc., and further improving the quality of the whole machine.

[0027] In one example, the foldable electronic device further includes a mainboard, which is located in the first middle frame, and all metal frame radiation segments with a transmitting function are centrally arranged in the first middle frame. In this way, the metal frame radiation segment connected to the mainboard's radio frequency circuit can be arranged only in the first middle frame position, which can meet the use requirements of the foldable electronic device, and there is no need to arrange the metal frame radiation segment connected to the mainboard's radio frequency circuit in the second middle frame position, which can simplify the structure of the foldable electronic device and optimize the overall structural layout of the foldable electronic device.

[0028] In one example, the second middle frame has at least one metal frame radiation segment, and the metal frame radiation segment located in the second middle frame only has modulation and / or demodulation functions. In this way, the antenna on the second middle frame is basically a passive antenna, which can be used in conjunction with the antenna on the first middle frame to improve the radiation performance of the antenna on the first middle frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 The radiation principle diagram of the frame antenna is shown;

[0030] Figure 2 It is a schematic diagram of the structure of the frame antenna in the electronic device in the current technology;

[0031] Figure 3 A schematic diagram of the structure of a frame antenna in a foldable electronic device in the current technology;

[0032] Figure 4 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application;

[0033] Figure 5 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application;

[0034] Figure 6 for Figure 5 The partial schematic diagram of the electronic device shown only shows the approximate positions of the middle frame, the hinge and the mainboard;

[0035] Figure 7 for Figure 5 A partial cross-sectional view at CC in the middle shows only the main components;

[0036] Figure 8 for Figure 7 A schematic diagram of another viewing direction of the structure shown;

[0037] Fig. 9 for Figure 7 The structure shown is a schematic diagram of the structure without the main board and fixing bolts;

[0038] Fig.10 for Fig. 9 The structure shown is a schematic diagram of the structure without the plastic body;

[0039] Fig.11 for Fig.10 Middle EE section view;

[0040] Fig.12 for Figure 7 A diagram showing the working principle of the structure shown;

[0041] Fig.13 It is a simulation diagram of the antenna in the embodiment of the present application and the current antenna;

[0042] Fig.14 for Fig.13 This is a schematic diagram of the structure of an electronic device in another embodiment of the present application;

[0043] Fig.15 for Fig.14 The structure shown is a schematic diagram of the structure without the main board and fixing bolts;

[0044] Fig.16 for Fig.15 A schematic diagram of the structure from another viewing angle of the structure shown, wherein the plastic body is hidden;

[0045] Fig.17 for Fig.16Sectional view in the E'-E' direction;

[0046] Fig.18 for Fig.14 A diagram showing the working principle of the structure shown;

[0047] Fig.19 for Figure 7 and Fig.16 A schematic structural diagram of the first metal connecting arm;

[0048] Fig. 20 This is a schematic diagram of a partial structure of an electronic device in yet another embodiment of the present application;

[0049] Fig.21 for Fig. 20 Cross-sectional view in the E1-E1 direction;

[0050] Fig. 22 This is a schematic diagram of a partial structure of an electronic device in another embodiment of the present application;

[0051] Fig.23 for Fig. 22 A schematic diagram of the structure shown in which the plastic body, main board and fixing bolts are removed;

[0052] Fig.24 for Fig. 22 A schematic structural diagram of the first metal connecting arm;

[0053] Fig.25 This is a schematic diagram of a partial structure of an electronic device in yet another embodiment of the present application;

[0054] Fig.26 for Fig.25 A schematic diagram of the structure shown in which the plastic body, main board and fixing bolts are removed;

[0055] Fig. 27 for Fig.25 A schematic structural diagram of the first metal connecting arm;

[0056] Fig.28 This is a schematic diagram of a partial structure of an electronic device in another embodiment of the present application;

[0057] Fig.29 It is a schematic diagram of a partial structure of an electronic device in the current technology;

[0058] Fig.30 FIG. 1 is a schematic diagram of a partial structure of an antenna in another embodiment of the present application. DETAILED DESCRIPTION

[0059] The inventor of this application has conducted extensive research on the design of frame antennas in electronic devices. Figure 1 , Figure 1 The radiation principle diagram of the frame antenna is shown. Figure 1 It is shown that two frame antenna segments are arranged on the same side of the middle frame 100A': the first frame segment 1011' and the second frame segment 1012'. The first frame segment 1011' and the second frame segment 1012' have the same working principle. The embodiment of the present application takes the first frame segment 1011' as an example to introduce the working principle of the antenna. The first frame segment 1011' is used to electrically connect to the ground point G and the RF circuit P1 through the first connection point 101a' and the second connection point 101b' respectively. Since the RF circuit P1 is electrically connected to the first frame segment 1011', when the RF circuit P1 transmits an electrical signal to the metal radiation unit 101c' between the first connection point 101a' and the second connection point 101b', the electric field and magnetic field around the metal radiation unit 101c' between the first connection point 101a' and the second connection point 101b' will change, thereby causing the metal radiation unit 101c' to resonate, thereby radiating wireless signals outward. The radio frequency circuit P2 of the second frame segment 1012 ′ may be different from the radio frequency circuit P1 of the first frame segment 1011 ′, or they may be the same.

[0060] Please combine Figure 2 It is understood that the first connection point 101a' and the second connection point 101b' are electrically connected to the ground terminal 31' and the feeding terminal 32' located directly below them respectively through the vertically arranged conductive spring 2', wherein the feeding terminal 32' is arranged on the main board 4', and the conductive spring 2' is basically in contact with the first frame segment 1011', the ground terminal 31' or the feeding terminal 32', so the length L of the metal radiation unit 101c' determines the radiation frequency band of the frame antenna. The lower the radiation frequency band, the longer L, and the section of the middle frame that can be used as a frame antenna is limited. The arrangement of a frame antenna with a lower radiation frequency band will inevitably lead to a smaller size of the middle frame 100A' that can be used for other radiation frequency bands. In order to meet the use requirements of electronic devices with multiple radiation frequency bands, the arrangement of frame antennas with low radiation frequency bands is usually cancelled when arranging frame antennas, which to a certain extent limits the functional requirements of electronic devices.

[0061] In particular, the border antenna layout has a more significant impact on the overall parameters of foldable electronic devices. Figure 3The current foldable electronic device includes a middle frame 100A' and a hinge 103', wherein the middle frame 100A' includes two parts: a first middle frame 101' and a second middle frame 102'. The first middle frame 101' and the second middle frame 102' are arranged on both sides of the hinge 103', and can be relatively folded and unfolded through the hinge 103'. Due to the arrangement of the hinge of the foldable electronic device, the first middle frame 101' can only be provided with radiation sections on three sides: the first side 1-1', the second side 1-2' and the third side 1-3'. In order to meet the requirements of multiple antenna functions of the foldable electronic device, it is currently necessary to provide radiation sections on both the first middle frame 101' and the second middle frame 102'. Figure 3 The first middle frame 101' is provided with a first radiation section 1011', and the second middle frame 102' is provided with a second radiation section 1012'. However, the main board 2' is usually provided on one side of the first middle frame 101', and the radio frequency circuits of each radiation section are located on the main board 2', for example Figure 3 The first RF circuit P1 and the second RF circuit P2 are both located on the main board 2'. The first RF circuit P1 and the second RF circuit P2 provide electrical signals to the first radiation section 1011' and the second radiation section 1012' respectively, wherein the electrical signal of the second RF circuit P2 needs to be transmitted to the second radiation section 1012' through the transmission line 3'. The transmission line 3' passes through the area where the rotating shaft 103' is located. Since the transmission line 3' needs to be reciprocatedly unfolded and folded in coordination with the rotating shaft 103', the transmission line 3' needs to use special materials, such as polyimide (PI), modified polyimide (MPI), liquid crystal polymer (LCP), etc. The price of the transmission line 3' made of special flexible materials is relatively high, resulting in a relatively high cost of the foldable electronic device. Moreover, the thickness of the transmission line 3' made of special flexible materials is thicker than that of the conventional flexible printed circuit (Flexible Printed Circuit FPC), and it occupies a relatively large space, which will increase the thickness of the whole machine and limit the increase of the battery capacity, thereby affecting the performance parameters of the whole machine.

[0062] Based on the above research findings, the inventors of the present application explored and conducted a large number of experiments, and proposed an electronic device that can meet the use requirements of as many radiation frequency bands as possible, has high flexibility of use, and has high overall quality.

[0063] In order to enable those skilled in the art to better understand the technical solutions of the embodiments of the present application, the embodiments of the present application are further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0064] The embodiment of the present application relates to an electronic device 100, wherein the electronic device 100 may include a handheld device, a vehicle-mounted device, a wearable device, a terminal device or other processing devices connected to a wireless modem, and may also include a cellular phone, a smart phone, a personal digital assistant (PDA) computer, a tablet computer, a laptop computer, a camcorder, a video recorder, a camera, a smart watch, a smart wristband, an augmented reality (AR) device, a virtual reality (VR) device, a vehicle-mounted computer and other terminal devices with imaging functions. The embodiment of the present application does not impose any special restrictions on the specific form of the above-mentioned terminal device. For ease of understanding, the following description is made by taking the electronic device as a mobile phone as an example.

[0065] See also Figure 4 , Figure 4 This is a schematic diagram of the structure of an electronic device provided in an embodiment of the present application.

[0066] The electronic device 100 in the embodiment of the present application may include a processor 110, an internal memory 121, a charging management module 140, a power management module 141, a battery 142, an antenna x, an antenna y, a communication module 150, a display screen 160, an audio module 170, a speaker 170A, a receiver 170B, a microphone 170C, a sensor module 180, a button 190, a motor 191, an indicator 192, a camera 193, etc.

[0067] The processor 110 may include one or more processing units, for example, the processor 110 may include an application processor (AP), a modem processor, a graphics processor (GPU), an image signal processor (ISP), a controller, a memory, a video stream codec, a digital signal processor (DSP), a baseband processor, and / or a neural-network processor unit (NPU), etc. Different processing units may be independent devices or integrated into one or more processors.

[0068] The processor 110 may have one or more interfaces, which may include but are not limited to a universal serial bus (USB) interface 130 , an earphone interface 170D, a SIM card interface 195 , an external memory interface 120 , and a USB interface 130 .

[0069] The communication module 150 may include an antenna x, an antenna y, a mobile communication module 150A, and / or a wireless communication module 150B. Figure 1 1 shows an example in which the communication module 150 includes both the mobile communication module 150A and the wireless communication module 150B, the antenna x is coupled to the mobile communication module 150A, and the antenna y is coupled to the wireless communication module. The communication of the electronic device can be implemented through the communication module 150, the modem processor, and the baseband processor.

[0070] Antenna x and antenna y may both have the function of transmitting and receiving electromagnetic wave signals, and each antenna in the electronic device is used to cover a single or multiple communication frequency bands. Different antennas may also be reused to improve the utilization of the antennas. For example, antenna x may be reused as a diversity antenna for a wireless local area network. In other embodiments, the antenna may be used in combination with a tuning switch.

[0071] The mobile communication module 150A can provide solutions for wireless communications including 2G / 3G / 4G / 5G applied to electronic devices. The mobile communication module 150A may include at least one filter, a switch, a power amplifier, a low noise amplifier, etc. The mobile communication module 150A can receive electromagnetic waves through the antenna x, filter, amplify, etc. the electromagnetic waves, and transmit them to the modulation and demodulation processor for demodulation. The mobile communication module 150A can also amplify the signal modulated by the modulation and demodulation processor, and convert it into electromagnetic waves for radiation through the antenna x.

[0072] The modem processor may include a modulator and a demodulator, wherein the modulator is used to modulate the low-frequency baseband signal to be transmitted into a medium-high frequency signal. The demodulator is used to demodulate the received electromagnetic wave signal into a low-frequency baseband signal. The demodulator then transmits the demodulated low-frequency baseband signal to the baseband processor for processing, and the low-frequency baseband signal is processed by the baseband processor and then transmitted to the application processor. The application processor outputs a sound signal through an audio device (not limited to the above-mentioned speaker 170A, receiver 170B, etc.), or displays an image or video stream through the display screen 160.

[0073] The wireless communication module 150B can provide wireless communication solutions for electronic devices, including wireless local area networks (WLAN), Bluetooth (BT), global navigation satellite system (GNSS), frequency modulation (FM), near field communication (NFC) and infrared (IR). The wireless communication module 150B receives electromagnetic waves through the antenna y, modulates and filters the electromagnetic wave signals, and sends the processed signals to the processor 110. The wireless communication module 150B can also receive the signal to be sent from the processor 110, modulate and amplify it, and convert it into electromagnetic waves for radiation through the antenna y.

[0074] In an embodiment of the present application, the sensor module 180 may include a pressure sensor 180A, a gyroscope sensor 180B, an air pressure sensor 180C, a magnetic sensor 180D, an acceleration sensor 180E, a distance sensor 180F, a proximity light sensor 180G, a fingerprint sensor 180H, a temperature sensor 180J, a touch sensor 180K, an ambient light sensor 180L, a bone conduction sensor 180M, etc., to realize the sensing and / or acquisition of different signals.

[0075] The structure shown in the embodiment of the present application does not constitute a specific limitation on the electronic device 100. In other embodiments, the electronic device 100 may include Figure 4 The illustrated components may be implemented in hardware, software, or a combination of hardware and software.

[0076] The following is an introduction to the electronic device provided in the embodiment of the present application, taking a foldable electronic device as an example to continue introducing the technical solution and technical effects.

[0077] Please refer to Figure 5 , Figure 5 A schematic diagram of the structure of a foldable electronic device provided in an embodiment of the present application.

[0078] The foldable electronic device in the embodiment of the present application includes a middle frame 100A and a hinge 103, wherein the middle frame 100A includes two parts: a first middle frame 101 and a second middle frame 102, the first middle frame 101 and the second middle frame 102 are respectively located on both sides of the hinge 103, the first middle frame 101 and the second middle frame 102 are connected by the hinge 103, under the action of the hinge 103, the first middle frame 101 and the second middle frame 102 can be folded and unfolded relative to each other, thereby realizing the folding or unfolding of the foldable electronic device. The above-mentioned processor 110, internal memory 121, charging management module 140, power management module 141, battery 142 and other electronic devices are installed inside the first middle frame 101 and the second middle frame 102. The display screen 160 is arranged on one side of the first middle frame 101 and the second middle frame 102.

[0079] In the embodiment of the present application, the structures of the second middle frame 102 and the first middle frame 101 may be the same, or may not be completely the same. The specific structures of the two middle frames may be stable according to the specific product.

[0080] See also Figure 6 , Figure 6 for Figure 5 The schematic diagram of the structure only shows the approximate positions of the first middle frame, the second middle frame, the rotating shaft and the main board, wherein the dotted line roughly shows the middle metal plate 1.

[0081] In the embodiment of the present application, the first middle frame 101 may include an intermediate metal plate 1, a metal frame 3 and a plastic body 2. Figure 6 The approximate positions of the three are shown in the figure. Among them, the metal frame 3 is located on the periphery of the middle metal plate 1. In the foldable electronic device, the middle metal plate 1 has no metal frame 3 on the side of the hinge 103, that is, for the rectangular first middle frame 101, the metal frame 3 includes three sides: the first side 301, the second side 302 and the third side 303. The metal frame 3 is located on the periphery of the middle metal plate 1. The middle metal plate 1 is located inside the space enclosed by the metal frame 3 and the hinge 103. The middle metal plate 1 can support the motherboard 4 of the foldable electronic device and the above-mentioned camera 193 and other components. The motherboard 4 here can be a partial structure of the above-mentioned processor 110. The first middle frame 101 has a accommodating cavity 100b, and the motherboard 4 and other components are installed inside the accommodating cavity 100b.

[0082] In the embodiment of the present application, the mainboard 4 of the electronic device 100 can be set in the first middle frame 101, the first middle frame 101 serves as the main frame of the electronic device, and the radio frequency circuits of various antennas are all set on the mainboard 4. At least part of the metal frame 3 of the first middle frame 101 can be used as an active antenna. No antenna is set on one side of the second middle frame 102 or only a modulation or / and demodulation antenna is set. The role of modulation is to convert various digital baseband signals into digital modulation signals (modulated signals or frequency band signals) suitable for channel transmission; the role of demodulation is to restore the received digital frequency band signals to digital baseband signals at the receiving end. The antenna formed by the metal frame radiation section provided in the embodiment of the present application can be used for both radio frequency circuits and modulation and demodulation circuits.

[0083] Please refer to Figure 6 In the embodiment of the present application, the metal frame 3 of the first middle frame 101 has a metal frame radiation section 3 - 1 , and the metal frame radiation section 3 - 1 is disconnected from other sections of the metal frame 3 by a breakpoint 3 a . Figure 6 It is shown that the metal frame radiation section 3-1 is located on the second side 302 of the metal frame 3. In addition to the metal frame radiation section 3-1, the metal frame 3 also includes a first section 3-2 and a second section 3-3. There is a breakpoint 3a between the metal frame radiation section 3-1 and the first section 3-2, and there is also a breakpoint 3a between the metal frame radiation section 3-1 and the second section 3-3. Of course, according to the actual needs of the electronic device, the first section 3-2 and the second section 3-3 can also be used as a frame antenna. In other words, the metal frame radiation section 3-1 in the present application can be located only on one side of the first middle frame 101, and of course it can also be located on both adjacent sides at the same time. The number of sides of the first middle frame 101 is not limited to the 3 shown in the embodiment of the present application. The first middle frame 101 can have N sides connected in sequence, where N is an integer greater than or equal to 2, for example, N can be 3, 4, 5 or an integer greater than 5.

[0084] For non-foldable electronic devices, the number of sides of the middle frame 100A can also be an integer greater than or equal to 2, and the metal frame radiation segment 3-1 can be located only on one side of the first middle frame 101, and of course can also be located on two adjacent sides at the same time.

[0085] Please refer to Figure 7 and Figure 8 , Figure 7 for Figure 5 Partial cross-sectional view at CC, Figure 7 The structure shows only the main components; Figure 8 for Figure 7 Schematic diagram of the structure in the other direction.

[0086] Figure 7It is shown that a support platform 11 is provided on the intermediate metal plate 1, which can support the mainboard 4. In addition, a positioning column 7 and a fixing bolt 6 can be fixed on the intermediate metal plate 1. The positioning column 7 is used to install and position the mainboard 4 when assembling. The fixing bolt 6 can realize the fixed connection between the mainboard 4 and the intermediate metal plate 1, and the fixing bolt 6 can be used to realize the grounding of the mainboard 4. In the embodiment of the present application, the metal frame 3 and the intermediate metal plate 1 can be separately arranged, and the two are formed into a whole through the plastic body 2. The intermediate metal plate 1 and the metal frame 3 are formed into a whole through the plastic body 2. The molding method is simple, and under the premise of meeting the use strength, the weight of the middle frame 100A is relatively light. The metal frame 3 and the intermediate metal plate 1 can be partially separated. For example, only the frame section of the metal frame 3 used as an antenna is separated from the intermediate metal plate 1, and the frame section not used as an antenna can be connected to the intermediate metal body 1. This can improve the overall strength of the middle frame 100A to a certain extent. Of course, the metal frame 3 and the intermediate metal plate 1 can also be completely separated.

[0087] Please refer again to 7 and Figure 8 In the embodiment of the present application, the antenna of the electronic device includes a metal frame radiation section 3-1 and a first metal connecting arm 5. Figure 6 The metal frame radiation section 3-1 shown is a part of the metal frame 3. The metal frame 3 may have one or more metal frame radiation sections 3-1. Figure 7 The metal frame radiation section 3-1 includes a first connection position 3a and a second connection position 3b, and the first connection position 3a and the second connection position 3b can be electrically connected to the first feed terminal 41 and the ground terminal 1b respectively, wherein the first feed terminal 41 can be connected to the first radio frequency circuit on the main board 4 through a transmission line, that is, the first feed terminal 41 can be a radio frequency feed terminal, and when the metal frame radiation section 3-1 is electrically connected to the first radio frequency circuit, the metal frame radiation section 3-1 can be used as a transmitting antenna. Of course, the first feed terminal 41 can also be electrically connected to the first modulation and demodulation circuit on the main board 4, that is, the first feed terminal 41 can be a modulation and demodulation signal feeding terminal. The structures of the radio frequency feeding terminal and the modulation and demodulation signal feeding terminal are roughly the same. The ground terminal 1b is located on the middle metal plate 1, and the ground terminal 1b can be electrically connected to the corresponding grounding position on the main board 4 through a feeder or a metal spring. The ground terminal 1b can be welded to the middle metal plate 1 by welding.

[0088] Please combine Fig. 9 and Fig.10 understand, Fig. 9 for Figure 7 The schematic diagram of the structure shown is without the main board and fixing bolts. Fig.10 for Fig. 9The structure shown is a schematic diagram of the structure without the plastic body. The electronic device in the embodiment of the present application includes a first feeding terminal 41 and a grounding terminal 1b, and the metal frame radiation section 3-1 has a first connection position 3a and a second connection position 3b, the first connection position 3a is electrically connected to the first feeding terminal 41, and the second connection position 3b is electrically connected to the grounding terminal 1b, and the section of the metal frame radiation section 3-1 located between the first connection position 3a and the second connection position 3b is connected to the current loop between the first feeding terminal 41 and the grounding terminal 1b.

[0089] In the embodiment of the present application, at least two of the first connection position 3a and the first feeding terminal 41, the second connection position 3b and the ground terminal 1b are electrically connected through the first metal connecting arm 5. In the embodiment of the present application, the first metal connecting arm 5 is connected between the second connection position 3b and the ground terminal 1b. Among them, the corresponding position of the metal frame radiation section 3-1 can be fixedly connected to the first metal connecting arm 5 by welding. The first metal connecting arm 5 has an intermediate section 53, and the intermediate section 53 and the surrounding metal body of the electronic device have a clearance setting. The so-called clearance setting means that the intermediate section 53 and the surrounding metal body have a certain predetermined gap. The range of the predetermined gap size is: based on not affecting the radiation work of the intermediate section 53, or even if there is an impact, the impact is within the required range. The peripheral metal body includes metal parts such as the metal frame 3 of the electronic device, the intermediate metal plate 1 and the main board 4.

[0090] Please refer again Figures 7 to 10 In the embodiment of the present application, the first metal connecting arm 5 includes two connecting parts, which are respectively defined as: a first connecting part 51 and a second connecting part 52, and the middle section 53 is connected between the first connecting part 51 and the second connecting part 52. In the embodiment of the present application, the second connecting position 3b and the grounding terminal 1b are respectively fixedly connected to the first connecting part 51 and the second connecting part 52 of the first metal connecting arm 5.

[0091] In the embodiment of the present application, the first connection portion 51 and the second connection portion 52 are arranged at intervals in the length direction S of the metal frame radiation section 3-1, and the distance between the two in the length direction of the metal frame radiation section 3-1 is determined according to the requirements of the specific product for the antenna length. In the embodiment of the present application, the distance between the first connection position 3a and the second connection position 3b along the length direction of the metal frame radiation section 3-1 is also determined according to the requirements of the specific product for the antenna length.

[0092] See also Figures 7 to 10When the first metal connecting arm 5 is connected between the second connecting position 3b and the grounding terminal 1b, since the first connecting portion 51 and the second connecting portion 52 are arranged at intervals in the direction S, the second connecting position 3b and the grounding terminal 1b are also arranged at intervals in the length direction of the metal frame radiation section 3-1. In the embodiment of the present application, the first connecting position 3a and the first feeding terminal 41 are electrically connected through the metal spring 8. The metal spring 8 is a straight plate structure. The metal spring 8 has a welding area 81 that is welded and fixed to the first connecting position 3a. The lower end of the metal spring 8 is elastically abutted and electrically connected to the first feeding terminal 41.

[0093] Of course, the structure of the metal spring 8 is not limited to the above description of the present application, and may also be other structures as long as the electrical connection between the first connection position 3 a and the first feeding terminal 41 can be achieved.

[0094] The metal frame radiation segment 3-1 may be a straight segment, and the embodiment of the present application shows a specific example in which the metal frame radiation segment 3-1 is approximately a straight segment, where S is the length direction of the metal frame radiation segment 3-1. Of course, the metal frame radiation segment 3-1 may also be a curved segment.

[0095] In the embodiment of the present application, the first connecting portion 51 and the second connecting portion 52 are arranged at intervals along the extension direction of the metal frame radiation segment 3-1, which is conducive to extending the middle section 53 along the S direction and making full use of the space in the length direction of the metal frame radiation segment 3-1. In this way, a longer middle section 53 can be obtained, further increasing the electrical length of the antenna.

[0096] The first connection position 3a and the second connection position 3b are also arranged at intervals in the length direction S of the metal frame radiation section 3-1, and at least part of the projection of the middle section 53 on the metal frame radiation section 3-1 is located between the first connection position 3a and the second connection position 3b. In this way, at least part of the projection of the middle section 53 on the metal frame radiation section 3-1 is located between the first connection position 3a and the second connection position 3b, so that the antenna structure formed is relatively compact.

[0097] In one example, the metal frame radiation section 3-1 also includes a side wall 31 facing the rotating shaft 103 or the side of the main board 4. Of course, the side wall 31 also faces the accommodating cavity 100b of the middle frame 100A. The side wall 31 includes a first surface 311 and a second surface 312. The second surface 312 is recessed relative to the first surface 311 toward the side away from the main board 4. A predetermined gap is formed between the middle section 53 and the second surface 312, and the first connecting portion 52 contacts the first surface 311 for electrical connection.

[0098] In the above embodiment, a recessed section is set on the side wall 31 of the metal frame radiation section 3-1 toward the first metal connecting arm 5 to meet the clearance requirement between the middle section 53 and the metal frame radiation section 3-1, thereby reducing the mutual interference between the two during radiation operation. This setting method is relatively simple and can minimize the size of the first middle frame 101 along the S1 direction.

[0099] In order to improve the overall use strength of the first middle frame 101 , the concave position where the second surface 312 is located can be appropriately filled with the plastic body 2 .

[0100] Please refer to further Fig.11 , Fig.11 for Fig.10 EE cross-sectional view of the structure shown, Fig.11 It is shown that there is a predetermined gap m between the middle section 53 and the metal frame radiation section 3-1 along the S1 direction, and the predetermined gap m is based on the fact that the middle section 53 and the metal frame radiation section 3-1 do not affect each other during radiation operation, or even if the two have an impact, the impact is within the required range. In a specific example, the predetermined gap m is approximately 1 mm.

[0101] In the embodiment of the present application, after the middle section 53 of the first metal connecting arm 5 is cleared, when the antenna is working, the path of the current I1 is as follows: Fig.12 The total length of the antenna connected between the first feeding terminal 41 and the ground terminal 1b is L'=L1+L2, where L1 is the length of the metal frame radiation section 3-1 between the first connection position 3a and the second connection position 3b, and L2 is the length of the middle section 53.

[0102] Combination Fig. 9 and Fig.12 It is understood that the metal frame radiation segment 3-1 also has a first end 3e and a second end 3d. When the antenna formed by the metal frame radiation segment 3-1 and the first metal connecting arm 5 is working, the section of the metal frame radiation segment 3-1 located between the first connection position 3a and the second connection position 3b plays a major radiation role, and the section between the first connection position 3a and the first end 3e and the section between the second connection position 3b and the second end 3d can also play a radiation role according to the requirements of the radiation frequency band.

[0103] Compared with the prior art, when the positions of the first feeding terminal 41 and the grounding terminal 1b remain unchanged or the positions of the first connection position 3a and the second connection position 3b on the first metal connecting arm 5 remain unchanged, in the embodiment of the present application, there is a middle section 53 with a clearance setting on the first metal connecting arm 5, and the electrical length of the antenna is equal to the sum of the length of the metal section of the metal frame radiation section 3-1 located between the first connection position 3a and the second connection position 3b and the middle section 53, which is approximately increased by 2 times the length of L2 compared with the prior art, that is, the middle section 53 increases the electrical length of the antenna to a certain extent, and realizes the extension of the length of the antenna connected between the first feeding terminal 41 and the grounding terminal 1b. In the embodiment of the present application, the low frequency can be lengthened by the middle section 53, and the resonance can be lower under the same matching state. When the metal frame radiation section 3-1 has the same length, the antenna formed by the metal frame radiation section 3-1 and the first metal connecting arm 5 provided in the present application has a lower resonance, which solves the problem of insufficient electrical length under a compact layout, resulting in high resonance and deteriorated efficiency.

[0104] In the embodiment of the present application, when the antenna is used as a low-frequency band antenna, within the 703MHz-960MHz operating frequency band, the antenna of the embodiment of the present application can improve the antenna performance by 0.5dB; when the antenna's operating frequency band is 1.7GHz-2.69GHz, compared with the prior art, the antenna of the embodiment of the present application can improve the antenna performance by about 0.5dB. Of course, the antenna's operating frequency band includes but is not limited to the above operating frequency bands. The antenna in the embodiment of the present application can be expanded in more forms according to different usage environments, and the performance improvement of different frequency bands can be controlled by increasing and decreasing the length of the middle section 53, and the coverage range can reach 0.5GHz-6GHz operating frequency band. Where 1GHz = 1000MHz.

[0105] Fig.13 A simulation diagram of the antenna in the embodiment of the present application and the antenna in the prior art is provided, wherein the horizontal axis represents the frequency and the vertical axis represents the efficiency.

[0106] Under the condition that other parameters are the same and only the structure of the first metal connecting arm 5 is different, it can be seen from the figure that the mark ① is the resonant frequency of the antenna in the embodiment of the present application, and its value is 0.92GHZ; the mark ② is the resonant frequency of the border antenna of the current existing scheme, and its value is 0.990GHZ. Obviously, the resonant frequency gain of the antenna in the embodiment of the present application is 70MHZ.

[0107] Marked ③ in the figure is the peak efficiency of the current existing border antenna, and its value is -4.3dBi; marked ④ is the peak efficiency of the antenna in the embodiment of the present application, and its value is -4.1dBi (dBi is the unit that represents the antenna gain). Compared with the existing border antenna, the antenna gain in the embodiment of the present application is increased by about 0.2dBi.

[0108] By using the antenna provided in the embodiment of the present application, the total length of the frame antenna of the first middle frame 101 is extended by utilizing the middle section 53 of the first metal connecting arm 5, so that more antennas can be arranged at the first middle frame 101, or the length of the antenna formed by the single metal frame radiation section 3-1 can be increased, which is suitable for the radiation of medium and low frequency band electrical signals. In this way, only an antenna connected to the radio frequency signal of the mainboard 4 can be arranged at the first middle frame 101, which can meet the use requirements of the foldable electronic device. There is no need to arrange an antenna connected to the radio frequency signal of the mainboard at the second middle frame 102, and the flexible transmission line passing through the rotating shaft 103 in the prior art is eliminated. This not only simplifies the structure of the foldable electronic device and can reduce the thickness of the foldable electronic product, but also increases the available space inside the middle frame 100A, which is conducive to optimizing the structure or layout of other components, such as increasing the battery capacity, etc., further improving the quality of the whole machine, and at the same time reducing the use cost of the foldable electronic device.

[0109] For example, all first metal connecting arms 3-1 with a transmitting function in a foldable electronic device are centrally arranged in the first middle frame 101, the main board 4 includes M radio frequency circuits for providing radio frequency signals to each first metal connecting arm 3-1, and the main board 4 is arranged in the first middle frame 101. M is an integer greater than or equal to 1.

[0110] Figures 14 to 17 Another embodiment of the partial schematic diagram of the electronic device of the present application is shown, wherein Fig.14 and Figure 7 The structures shown are located in roughly the same position in the electronic device. Fig.14 and Figure 7 The main difference between the structures shown is that Fig.14 In the illustrated embodiment, the metal frame radiation section 3-1 is also provided with a third connection position 3c, and the antenna also includes a second metal connecting arm 9. The third connection position 3c is electrically connected to the second feeding terminal 42 of the mainboard 4 through the second metal connecting arm 9, and the second feeding terminal 42 is used to be electrically connected to the second RF circuit or the second modulation and demodulation circuit provided on the mainboard 4. The local section 91 of the second metal connecting arm 9 is welded and connected to the third connection position 3, and the two are formed as a whole by welding, and the connection reliability is high. The second metal connecting arm 9 and the second feeding terminal 42 can be elastically abutted to achieve electrical connection. The second metal connecting arm 9 can be in the form of a metal spring. The first feeding terminal 41 and the second feeding terminal 42 can have the same structure, and the frequencies of the electrical signals loaded by the first RF circuit and the second RF circuit can be the same, or of course different.

[0111] Please combine Fig.18It is understood that in the embodiment of the present application, the metal frame radiation section 3-1 in the antenna can be configured to form two current loops: a first current loop and a second current loop, wherein the direction of the current I1 in the first current loop is: 41-3a-3b-53-1b; the direction of the current I2 in the second current loop is: 42-3c-3b-53-1b. The first RF circuit and the second RF circuit can load electrical signals of different frequencies, and the radiation of different electrical signals by the metal frame radiation section 3-1 can be achieved by turning on the two circuits in a time-sharing manner or controlling them in other ways, so as to meet the different functional requirements of electronic equipment.

[0112] Please combine Figures 15 to 18 It is understood that in the embodiment of the present application, the ground terminal 1b can be located between the first feeding terminal 41 and the second feeding terminal 42, and the first connection position 3a, the second connection position 3b and the third connection position 3c are arranged in sequence along the length direction S of the metal frame radiation section 3-1. Fig.18 It can be seen that when the first metal connecting arm 5 is connected to the ground terminal 1b and the metal frame radiation segment 3-1, the path of the first current loop becomes longer, which will not affect the path change of the second current loop, that is, the total length of the radiating antenna formed by the metal frame radiation segment 3-1 and the second RF circuit remains roughly unchanged, which meets the use requirements of specific environments and has high flexibility of use.

[0113] in, Figures 7 to 18 The specific structure of the first metal connecting arm 5 in the embodiment shown can be combined with Fig.19 understand.

[0114] Please refer to Fig. 20 and Fig.21 The present application also provides another embodiment of the local structure of the electronic device, wherein Figure 7 , Fig.14 Compared with the two embodiments shown, Fig. 20 and Fig.21 The main difference of the antenna shown is that the first metal connecting arm 5 and the metal frame radiation section 3-1 are integrally formed. Compared with two components being formed separately and fixed by welding, the two components in the embodiment of the present application are integrally formed to simplify the assembly steps of the electronic device.

[0115] Please combine Figure 22 to Figure 24 It is understood that the present application embodiment also provides another specific embodiment of the local structure of the electronic device, wherein Fig. 22 The structure shown is Figure 7The positions of the structures shown in the electronic device are roughly the same. In the embodiment of the present application, in order to improve the reliability of the fixation of the first metal connecting arm 5, the first plate body 5-1 may also include a positioning section 54, the positioning section 54 is connected to the side of the first connecting portion 51 away from the middle section 53, and the positioning section 54 is at least partially connected and fixed to the side wall 31 of the metal frame radiation section 3-1. The positioning section 54 has a welding area 541, and the welding area 541 is welded and fixed to the side wall 31.

[0116] Please refer to Fig.25 , Fig.26 and Fig. 27 The embodiment of the present application also provides another specific embodiment of the local structure of the electronic device. In the embodiment of the present application, the first metal connecting arm 5 is connected and fixed to the second metal connecting arm 9. The first metal connecting arm 5 and the second metal connecting arm 9 can be independent components. The two are fixed by welding process or bonding process. The first metal connecting arm 5 and the second metal connecting arm 9 are independent components and can be processed separately. The processing technology is relatively simple.

[0117] Of course, the first metal connecting arm 5 and the second metal connecting arm 9 can also be an integrated structure, and the two are integrally formed by stamping, etc. The integrally formed structure is easy to install.

[0118] Please refer again Fig.25 and Fig.26 In the embodiment where the first metal connecting arm 5 and the second metal connecting arm 9 are integrally formed, the section of the first metal connecting arm 5 between the third connecting position 3c and the first connecting portion 51 is further connected and fixed to the metal frame radiation section 3-1, and the section of the metal frame radiation section 3-1 between the third connecting position 3c and the first connecting portion 51 is the positioning section 54, which mainly plays the role of fixed connection and current conduction, and may not be used as an antenna radiation section. The figure shows the welding area 541 where the first metal connecting arm 5 is welded and fixed to the metal frame radiation section 3-1.

[0119] In the embodiment of the present application, the third connection position 3c and the second feeding end 42 can be arranged in a direction perpendicular to the thickness of the mainboard 4, and the second metal connecting arm 9 can be a straight plate structure mainboard, which occupies a small space and is conducive to the compact structure of the electronic equipment.

[0120] In the embodiment of the present application, the first metal connecting arm 5 can be in the form of a metal spring sheet. The metal spring sheet has a simple structure and occupies a small space. The two connection positions are elastically connected and have a buffering effect, which can reduce the impact of external force on the connection position and ensure the connection reliability of the connection position.

[0121] In the embodiment of the present application, the first connection portion 51 can be welded and fixedly connected to the second connection position 3b, and the second connection portion 52 can be welded and fixedly connected to the ground terminal 1b.

[0122] Please refer to Fig.19 , Fig. 20 , Fig.23 and Fig.26 In the embodiment of the present application, the first metal connecting arm 5 includes a first plate body 5-1, which has a predetermined length along the length direction S of the metal frame radiation section 3-1. The plate surface 501 of the first plate body 5-1 is arranged opposite to the side wall 31. The first plate body 5-1 includes a middle section 53 and a first connecting portion 51. The first connecting portion 51 is located on the side of the middle section 53 away from the ground terminal 1b. In the embodiment of the present application, the plate surface 501 of the first plate body 5-1 is opposite to the side wall 31 and extends along the length direction of the metal frame radiation section 3-1. In this way, the space occupied by the first metal connecting arm 5 in the S1 direction is small, which reduces the size of the electronic device in this direction.

[0123] Please refer again Fig. 9 , Fig.19 , Fig. 20 , Fig.23 and Fig.26 In the embodiment of the present application, the end of the first plate body 5-1 away from the first connecting portion 51 has a second plate body 5-2, the second plate body 5-2 is bent toward one side of the main board 4, and the second connecting portion 52 is located on the second plate body 5-2. The second plate body 5-2 can be roughly perpendicular to the first plate body 5-1. In the embodiment of the present application, the second connecting portion 52 on the second plate body 5-2 is connected to the grounding terminal 1b of the intermediate metal plate 1 located below the main board 4. The plate surface 503 of the second plate body can be roughly parallel to the plate surface of the main board 4. In this way, the height occupied by the second plate body 5-2 on the electronic device is small, which is convenient for insertion under the main board 4 to achieve welding and fixing with the grounding terminal 1b on the intermediate metal plate 1. In the embodiment of the present application, the second plate body 5-2 is connected to the side of the first plate body 5-1 extending along the length S direction of the metal frame radiation section 3-1, and the plate surface 503 of the second plate body contacts the first feeding terminal 41 or the grounding terminal 1b to be electrically connected. After the second plate 5 - 2 is bent, the plate surface 503 of the second plate contacts the ground terminal 1 b , which can reduce the space occupied by the electronic device in the thickness direction and meet the ultra-thin design concept of the electronic device.

[0124] When the electronic device is a foldable electronic device, the metal frame radiation segment 3-1 and the first feeding end 41 and the grounding end 1b electrically connected to the metal frame radiation segment 3-1 can all be located on the same side of the hinge. The structure is simple and compact, and there is no need to use a special flexible transmission line to cross the hinge 103 area, thereby saving costs and reducing space occupancy.

[0125] The above embodiments of the present application are all technical solutions introduced by taking the first metal connecting arm 5 of the above structure as an example to be arranged between the second connecting position 3b and the grounding terminal 1b. Those skilled in the art should understand that the first metal connecting arm 5 of the above structure can also be arranged between the first connecting position 3a and the first feeding terminal 41. Fig.28 shown.

[0126] It should be noted that Figures 7 to 28 The fixed connection positions are marked with multiple small circles.

[0127] Of course, the antenna formed by the metal frame radiation segment 3-1 and the first metal connecting arm 5 in the embodiment of the present application is also applicable to non-folding electronic devices, which can optimize the frame antenna arrangement of non-folding electronic devices, meet the needs of various radiation frequency bands, increase the use functions of electronic devices, and thus improve the quality of the whole machine. For non-folding electronic devices, the number of middle frames 100A is one. This application does not provide a drawing showing an antenna arranged on a non-folding electronic device, but it does not prevent those skilled in the art from applying the above antenna to non-folding electronic devices.

[0128] In addition, another embodiment of the antenna is given below.

[0129] Please refer to Fig.29 , Fig.29 Another structural diagram of the frame antenna of the current technology. In some application environments, due to layout or structural limitations, the grounding terminal 1b' is far away from the metal frame radiation segment 3-1', and the metal frame radiation segment 3-1' needs to be provided with a small branch 31', and the free end of the small branch 31' can extend to a position near the grounding terminal 1b', and then the connecting spring 5' is fixed to the free end of the small branch 31', and the connecting spring 5' mainly serves to electrically connect the small branch 31' and the grounding terminal 1b'. In this structure, the metal frame radiation segment 3-1' has a complex structure, and the small branch 31' has a relatively low strength in use and is easy to break.

[0130] Please refer to Fig.30 , Fig.30 It is a partial schematic diagram of the antenna in the embodiment of the present application. In the embodiment of the present application, the first connection part 51" and the second connection part 52" of the first metal connecting arm 5" are arranged at intervals along the length direction of the metal frame radiation section 3-1", wherein the first connection part 51" is fixedly connected to the metal frame radiation section 3-1", and the length of the middle section 53" is used to extend the second connection part 52" to the vicinity of the grounding terminal 1b', that is, the middle section 53" can replace the small branches, simplifying the middle frame structure and improving the strength of use.

[0131] certainly, Fig.30The antenna shown can be used as a passive antenna, and of course can also be used as an active antenna. The use environment is not limited as long as the above-mentioned technical effects can be achieved.

[0132] For other structures of electronic devices, please refer to the current technology.

[0133] In the embodiments of the present application, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features.

[0134] The directional terms mentioned in the embodiments of the present application, such as "inside", "outside", etc., are only references to the directions of the drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of the present application, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0135] In the description of the embodiments of the present application, the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0136] In the embodiments of the present application, "and / or" is only a description of the association relationship of the associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0137] The above are only preferred implementations of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. An electronic device, characterized in that: The electronic device comprises a first feeding terminal and a ground terminal, and further comprises: A middle frame, wherein the middle frame comprises a metal frame radiation section, and the metal frame radiation section has a first connection position and a second connection position, which are respectively used to be electrically connected to the first feeding terminal and the grounding terminal; A first metal connecting arm, wherein the first connecting position and the first feeding terminal, and the second connecting position and at least two of the grounding terminal are electrically connected through the first metal connecting arm, and the first metal connecting arm has a middle section which is free from the surrounding metal body.

2. The electronic device according to claim 1, characterized in that: The first connection position and the second connection position are arranged at intervals along the length direction of the metal frame radiation section, and at least a partial projection of the middle section on the metal frame radiation section is located between the first connection position and the second connection position.

3. The electronic device according to claim 2, characterized in that: The extending direction of the middle section is consistent with the length direction of the metal frame radiation section.

4. The electronic device according to claim 3, characterized in that: The middle frame includes a receiving cavity; The metal frame radiation section includes a side wall facing the accommodating cavity, the side wall includes a first surface and a second surface, the second surface is recessed relative to the first surface toward a side away from the accommodating cavity, there is a net space gap between the middle section and the second surface, and the first metal connecting arm is in contact with the first surface for electrical connection.

5. The electronic device according to claim 4, characterized in that: The first metal connecting arm includes a first plate body, which has a predetermined length along the length direction of the radiation section of the metal frame. The plate surface of the first plate body is arranged opposite to the side wall. The first plate body includes the middle section and a first connecting portion electrically connected to the first surface. The first connecting portion is located on a side of the middle section away from the ground end.

6. The electronic device according to claim 5, characterized in that: The end of the middle section away from the first connecting portion has a second plate body, the second plate body is bent toward one side of the accommodating cavity, and the second plate body has a second connecting portion electrically connected to the grounding end.

7. The electronic device according to claim 6, characterized in that: It also includes a main board, which is arranged in the accommodating cavity. The board surface of the second board body is opposite to the board surface of the main board, and the board surface of the second board body is in contact and electrically connected with the grounding terminal.

8. The electronic device according to any one of claims 5 to 7, characterized in that: The first plate body further includes a positioning section, which is connected to a side of the first connecting portion away from the middle section, and the positioning section is fixedly connected to a side wall of the metal frame radiation section.

9. The electronic device according to any one of claims 1 to 8, characterized in that: The first metal connecting arm is connected between the grounding terminal and the second connecting position, the metal frame radiation section is also provided with a third connecting position, the first connecting position, the second connecting position and the third connecting position are arranged in sequence along the extension direction of the metal frame radiation section, the electronic device also includes a second feeding terminal, the grounding terminal is located between the first feeding terminal and the second feeding terminal, the electronic device also includes a second metal connecting arm, and the third connecting position is electrically connected to the second feeding terminal through the second metal connecting arm.

10. The electronic device according to claim 9, characterized in that: The first metal connecting arm and the second metal connecting arm are connected and fixed, or the two are an integrated structure.

11. The electronic device according to claim 10, characterized in that: The first metal connecting arm includes a positioning section, which is connected to a side of the first connecting portion away from the middle section and extends to be connected to the second metal connecting arm, and the positioning section is fixedly connected to the metal frame radiation section.

12. The electronic device according to any one of claims 9 to 11, characterized in that: The first metal connecting arm is fixed to the metal frame radiation section by welding, and the second metal connecting arm is fixed to the metal frame radiation section by welding.

13. The electronic device according to any one of claims 9 to 11, characterized in that: The first metal connecting arm is elastically electrically connected to the first feeding end, and the second metal connecting arm is elastically electrically connected to the second feeding end.

14. The electronic device according to any one of claims 1 to 13, characterized in that: The middle frame includes a metal frame and an intermediate metal plate, the metal frame is located at the outer periphery of the intermediate metal plate, the metal frame radiation section is a partial section of the metal frame, the grounding end is arranged on the intermediate metal plate, the electronic device includes a main board, and the grounding end is electrically connected to the grounding position of the main board.

15. The electronic device according to claim 14, characterized in that: The middle frame further comprises a plastic body, and the metal frame and the middle metal plate are connected to form a whole through the plastic body.

16. The electronic device according to any one of claims 1 to 15, characterized in that: The middle frame includes N side edges connected in sequence, the metal frame radiation section is located at only one of the side edges, or the metal frame radiation section is located at two adjacent side edges at the same time, wherein N is an integer greater than or equal to 2.

17. The electronic device according to any one of claims 1 to 16, characterized in that: The electronic device is a foldable electronic device, the middle frame includes a first middle frame and a second middle frame, the foldable electronic device also includes a rotating shaft, the first middle frame and the second middle frame are respectively rotatably connected to the two sides of the rotating shaft, at least one of the first middle frame and the second middle frame has the metal frame radiation segment, each of the metal frame radiation segments and the first feeding end and the grounding end electrically connected to the metal frame radiation segment are located on the same side of the rotating shaft.

18. The electronic device according to claim 17, characterized in that: The foldable electronic device also includes a mainboard, which is located in the first middle frame, and all the metal frame radiation sections with a transmitting function are centrally arranged in the first middle frame.

19. The electronic device according to claim 18, characterized in that: The second middle frame has at least one metal frame radiation segment, and the metal frame radiation segment located in the second middle frame only has a modulation and / or demodulation function.

Images