Electronic device

Abstract

The application belongs to the technical field of electronic equipment, and particularly relates to an electronic equipment. The application aims to solve the problem of low communication performance of an NFC antenna in a related electronic equipment. The electronic equipment of the application comprises a shell, an NFC antenna and a mainboard. A second part of the NFC antenna is arranged in a groove on one side of the mounting plate facing the back cover, and the side of the second part facing the back cover is opposite to the back cover, so that the second part is not easily shielded by other components in the mounting space, and the communication performance of the NFC antenna is improved. In addition, the second part is arranged in the groove, the height of the second part protruding from the slot of the groove is reduced, the thickness of the second part and the mounting plate as a whole in the direction perpendicular to the surface of the mounting plate is reduced, and the thickness of the electronic equipment is reduced.

Description

Technical Field

[0001] This application relates to the field of electronic device technology, and more particularly to an electronic device. Background Technology

[0002] The casing of an electronic device is usually assembled from a front shell, a middle frame, and a rear cover. The motherboard is installed inside the casing. The NFC (Near Field Communication) antenna is usually installed in the middle frame and electrically connected to the motherboard to achieve short-range electromagnetic induction coupling in the 13.56MHz frequency band, so as to complete the non-contact signal transmission and reception and energy transfer between the electronic device and external devices, that is, to realize the near field communication function.

[0003] In related technologies, the mid-frame consists of a bezel and a backplate, with the backplate located inside the bezel. The NFC antenna is typically mounted on the backplate. As the thickness of electronic devices decreases, the components inside the bezel become increasingly compact, and some components may obstruct the NFC antenna, leading to a reduction in the NFC antenna's communication performance. Summary of the Invention

[0004] In view of this, the main objective of the embodiments of this application is to provide an electronic device to solve the technical problem of low communication performance of NFC antennas in related electronic devices.

[0005] To achieve the above objectives, embodiments of this application provide an electronic device, including: a housing, an NFC antenna, and a motherboard;

[0006] The housing includes a middle frame and a rear cover, with the rear cover covering one side of the middle frame along the thickness direction;

[0007] The middle frame includes a border and a mounting plate, with the mounting plate connected to the inside of the border;

[0008] The motherboard is located on the side of the mounting plate opposite to the back cover;

[0009] The mounting plate has an open edge, which is spaced apart from the frame. The side of the mounting plate facing the rear cover has a groove that is recessed away from the rear cover. One end of the groove extends through the open edge, and the bottom of the groove at the other end of the groove has a through hole that communicates with the groove.

[0010] The NFC antenna includes a first part, a second part, and a third part connected in sequence; the second part is disposed in a groove, and the side of the second part facing the back cover is opposite to the back cover; the first part passes through a through hole and is connected to the side of the mounting plate opposite to the back cover; the third part bypasses the open edge and is connected to the side of the mounting plate opposite to the back cover; the first part and the third part are electrically connected to the motherboard respectively.

[0011] In some embodiments that may include the above embodiments, the motherboard is provided with a radio frequency connection terminal and a ground connection terminal on the side facing the mounting plate;

[0012] The NFC antenna has a power supply connection and a ground connection.

[0013] The power supply connection is disposed in the first part, and the power supply connection is electrically connected to the radio frequency connection terminal;

[0014] The grounding connection is located in the third part and is electrically connected to the grounding connection terminal.

[0015] In some embodiments that may include the above embodiments, the radio frequency connection terminal and the ground connection terminal are respectively provided with elastic connectors, the elastic connectors are conductive, and the elastic connectors are electrically connected to the motherboard;

[0016] The power supply connection and the ground connection are elastically abutted against the corresponding elastic connectors and are subjected to the downward pressure of the elastic connectors toward the rear cover.

[0017] In some embodiments that may include the above embodiments, the elastic connector includes a fixing plate, a first connecting plate, and a second connecting plate;

[0018] The surface of the mounting plate is parallel to the surface of the motherboard, and the mounting plate is fixedly connected to the motherboard.

[0019] The first connecting plate is inclined relative to the fixed plate, one end of the first connecting plate is connected to the fixed plate, and the other end of the first connecting plate extends away from the fixed plate.

[0020] One end of the second connecting plate is connected to the end of the first connecting plate away from the fixed plate, and the other end of the second connecting plate extends toward the end of the first connecting plate close to the fixed plate, with the second connecting plate and the first connecting plate spaced apart.

[0021] The end of the first connecting plate furthest from the fixed plate elastically abuts against the corresponding power supply connection or grounding connection.

[0022] In some embodiments that may include the above embodiments, a protrusion is provided at the end of the first connecting plate away from the fixed plate. The protrusion is located on the side of the first connecting plate opposite to the fixed plate, and the protrusion abuts against the corresponding power supply connection or grounding connection.

[0023] In some embodiments that may include the above embodiments, a first positioning post and a second positioning post are provided on the side of the mounting plate away from the rear cover;

[0024] The first part has a first positioning hole, and a first positioning pin is inserted into the first positioning hole;

[0025] The third part has a second positioning hole, and a second positioning post is inserted into the second positioning hole.

[0026] In some embodiments that may include the above embodiments, a third positioning post is provided at the bottom of the groove, and a third positioning hole is constructed in the second part, with the third positioning post passing through the third positioning hole.

[0027] In some embodiments that may include the above embodiments, the NFC antenna is a flexible printed circuit antenna, with the second part bonded to the bottom of the groove, and the first and third parts respectively bonded to the side of the mounting plate away from the back cover.

[0028] In some embodiments that may include the above-described embodiments, the side of the second portion away from the bottom of the groove is flush with the side of the mounting plate facing the rear cover.

[0029] In some embodiments that may include the above embodiments, the housing may further include a front housing disposed on the side of the middle frame opposite to the rear cover;

[0030] The electronic device also includes a display screen, which is located on the side of the front cover away from the rear cover and is electrically connected to the motherboard.

[0031] The electronic device provided in this application includes a housing, an NFC antenna, and a motherboard. A second portion of the NFC antenna is disposed within a groove on the side of the mounting plate facing the rear cover, and this side of the second portion is opposite to the rear cover. This design prevents the second portion from being obstructed by other components within the mounting space, thus improving the communication performance of the NFC antenna. Furthermore, by disposing the second portion within the groove, the height of the second portion protruding from the groove opening is reduced, thereby reducing the thickness of the second portion and the mounting plate as a whole in the direction perpendicular to the surface of the mounting plate, and consequently reducing the thickness of the electronic device. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1 This is a schematic diagram of the structure of the electronic device provided in the embodiments of this application;

[0034] Figure 2 This is an exploded structural diagram of an electronic device provided in an embodiment of this application;

[0035] Figure 3 A schematic diagram of the mid-frame structure of the electronic device provided in the embodiments of this application;

[0036] Figure 4This is a schematic diagram of the structure of an NFC antenna in an electronic device provided in an embodiment of this application;

[0037] Figure 5 A schematic diagram of the NFC antenna and mid-frame in an electronic device provided in this application, viewed from the rear side.

[0038] Figure 6 for Figure 5 A magnified view of a portion of point P1 in the middle;

[0039] Figure 7 A schematic diagram of the NFC antenna and mid-frame in an electronic device provided in this application, viewed from the front.

[0040] Figure 8 for Figure 7 A magnified view of a portion of point P2 in the middle;

[0041] Figure 9 for Figure 7 A magnified view of a portion of point P3 in the middle;

[0042] Figure 10 This is a schematic diagram of the structure of the NFC antenna and motherboard in the electronic device provided in the embodiments of this application;

[0043] Figure 11 An exploded view of the NFC antenna and motherboard in an electronic device provided in this application embodiment;

[0044] Figure 12 This is a schematic diagram of the structure of the elastic connector in the electronic device provided in the embodiments of this application;

[0045] Figure 13 This is a partial structural diagram of the elastic connector and NFC antenna in the electronic device provided in the embodiments of this application.

[0046] Explanation of reference numerals in the attached figures:

[0047] 10. Housing; 110. Middle frame; 111. Side frame; 112. Mounting plate; 1121. Open edge; 1122. Groove; 1123. Through hole; 1124. First positioning post; 1125. Second positioning post; 1126. Third positioning post; 120. Rear cover; 130. Front cover;

[0048] 20. NFC antenna; 210. First part; 211. Power supply connection part; 212. First positioning hole; 220. Second part; 221. Third positioning hole; 230. Third part; 231. Ground connection part; 232. Second positioning hole;

[0049] 30. Mainboard; 310. RF connector; 320. Ground connector; 330. Flexible connector; 331. Fixing plate; 332. First connecting plate; 3321. Protrusion; 3343. Second connecting plate;

[0050] 40. Display screen. Detailed Implementation

[0051] First, those skilled in the art should understand that these embodiments are merely for explaining the technical principles of this application and are not intended to limit the scope of protection of this application. Those skilled in the art can make adjustments as needed to adapt to specific application scenarios.

[0052] Secondly, it should be noted that in the description of the embodiments of this application, the terms "inner" and "outer" and other terms indicating the direction or positional relationship are based on the direction or positional relationship shown in the drawings. This is only for the convenience of description and is not intended to indicate or imply that the described device or component must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this application.

[0053] Furthermore, it should be noted that, in the description of the embodiments of this application, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application according to the specific circumstances.

[0054] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0055] To address the issue of low communication performance of NFC antennas in related electronic devices, this application provides an electronic device that improves the communication performance of the NFC antenna by placing the second part of the NFC antenna on the side of the mounting plate facing the rear cover, thereby reducing the obstruction of the NFC antenna by internal components.

[0056] The principles and features of the embodiments of this application are described below with reference to the accompanying drawings. The examples given are only used to explain the embodiments of this application and are not intended to limit the scope of the embodiments of this application.

[0057] It should be noted that, in the description of the embodiments of this application, "front side" refers to the side of the electronic device facing the user when it is in normal use. "Rear side" refers to the side opposite to the front side, that is, the side of the electronic device facing away from the user when it is in normal use.

[0058] refer to Figure 1 and Figure 2 This embodiment provides an electronic device, including a housing 10, an NFC antenna 20, and a motherboard 30. Both the NFC antenna 20 and the motherboard 30 are housed within the housing 10.

[0059] refer to Figure 1 and Figure 2 The housing 10 includes a middle frame 110 and a rear cover 120, with the rear cover 120 covering one side of the middle frame 110 along its thickness direction. The thickness direction of the middle frame 110 is consistent with the thickness direction of the electronic device. The rear cover 120 and the middle frame 110 enclose a mounting space for mounting some components of the electronic device.

[0060] refer to Figure 2 The middle frame 110 includes a frame 111 and a mounting plate 112, with the mounting plate 112 connected to the inside of the frame 111.

[0061] The motherboard 30 is located on the side of the mounting plate 112 opposite to the back cover 120.

[0062] Mounting plate 112 has an open edge 1121, which is opposite to and spaced apart from a portion of the frame 111.

[0063] refer to Figure 3 The mounting plate 112 has a groove 1122 recessed away from the rear cover 120 on the side facing the rear cover 120. One end of the groove 1122 extends through the open edge 1121, and the bottom of the groove at the other end of the groove 1122 is constructed with a through hole 1123, which communicates with the groove 1122.

[0064] refer to Figure 4 The NFC antenna 20 includes a first part 210, a second part 220 and a third part 230 connected in sequence.

[0065] refer to Figure 2 and Figure 5 The second part 220 is disposed in the groove 1122, and the side of the second part 220 facing the rear cover 120 is opposite to the rear cover 120. That is, the side of the second part 220 away from the bottom of the groove 1122 is opposite to the rear cover 120, so that the second part 220 is not easily blocked by other components in the installation space, thereby improving the communication performance of the NFC antenna 20.

[0066] Furthermore, the second part 220 is disposed within the groove 1122, reducing the height of the second part 220 protruding from the groove 1122, thereby reducing the thickness of the second part 220 and the mounting plate 112 as a whole in the direction perpendicular to the surface of the mounting plate 112, and thus reducing the thickness of the electronic device.

[0067] refer to Figure 5 , Figure 6 , Figure 7 and Figure 8 The first part 210 passes through the through hole 1123 and is connected to the side of the mounting plate 112 away from the back cover 120 so as to facilitate electrical connection with the motherboard 30 located on the front side of the mounting plate 112.

[0068] refer to Figure 5 , Figure 7 and Figure 9 The third part 230 bypasses the open edge 1121 and is connected to the side of the mounting plate 112 away from the back cover 120 so as to facilitate electrical connection with the motherboard 30 located on the front side of the mounting plate 112.

[0069] refer to Figure 10 The first part 210 and the third part 230 are electrically connected to the motherboard 30 to achieve short-range electromagnetic induction coupling in the 13.56MHz frequency band, and complete the non-contact signal transmission and energy transfer between the electronic device and the external device, that is, to realize the near-field communication function of the electronic device through the NFC antenna 20.

[0070] In some possible implementations of the embodiments of this application, reference is made to Figure 11 The motherboard 30 has an RF connection terminal 310 and a ground connection terminal 320 on the side facing the mounting plate 112.

[0071] refer to Figure 4 and Figure 11 The NFC antenna 20 has a power supply connection 211 and a ground connection 231.

[0072] A power supply connection 211 is disposed on the first part 210 and is electrically connected to the radio frequency connection terminal 310 to transmit radio frequency signals.

[0073] In the transmitting state, the 13.56MHz high-frequency electrical signal generated by the NFC chip on the motherboard 30 is input to the NFC antenna 20 through the electrically connected radio frequency connection terminal 310 and the power supply connection unit 211. The NFC antenna 20 converts the electrical signal into an alternating magnetic field and radiates it outward.

[0074] In the receiving state, the NFC antenna 20 senses the induced electrical signal generated by the external magnetic field, and transmits it back to the NFC chip on the motherboard 30 for demodulation and decoding through the electrically connected feed connection 211 and the radio frequency connection 310.

[0075] The ground connection part 231 is provided in the third part 230. The ground connection part 231 is electrically connected to the ground connection terminal 320 to form a grounding loop to ensure signal stability and impedance matching.

[0076] High-frequency radio frequency signals require a complete loop to be transmitted effectively. The grounding path provided by the ground connection part 231 allows the signal to form a closed loop between the NFC antenna 20 and the NFC chip on the motherboard 30, reducing signal leakage.

[0077] In some possible implementations of the embodiments of this application, reference is made to Figure 12 The radio frequency connection terminal 310 and the ground connection terminal 320 are respectively provided with elastic connectors 330. The elastic connectors 330 are conductive and are electrically connected to the motherboard 30.

[0078] refer to Figure 13 The power supply connection 211 and the ground connection 231 are respectively elastically abutted against the corresponding elastic connector 330 and are subjected to the downward pressure of the elastic connector 330 toward the rear cover 120.

[0079] In other words, the power supply connection 211 elastically abuts against the elastic connector 330 provided on the radio frequency connection terminal 310, and the elastic connector 330 undergoes elastic deformation, applying downward pressure toward the rear cover 120 to the power supply connection 211, so that the elastic connector 330 and the power supply connection 211 are pressed together, thereby improving the connection strength and reliability between the power supply connection 211 and the radio frequency connection terminal 310.

[0080] The ground connection 231 elastically abuts against the elastic connector 330 provided at the ground connection end 320, and the elastic connector 330 undergoes elastic deformation, applying a downward pressure toward the rear cover 120 to the ground connection 231, so that the elastic connector 330 and the ground connection 231 are pressed together, thereby improving the connection strength and reliability between the ground connection 231 and the ground connection end 320.

[0081] In some possible implementations of the embodiments of this application, reference is made to Figure 12 and Figure 13 The elastic connector 330 may include a fixing plate 331, a first connecting plate 332, and a second connecting plate 3343. The fixing plate 331, the first connecting plate 332, and the second connecting plate 3343 may be integrally formed and all of them are conductive.

[0082] The surface of the fixing plate 331 is parallel to the surface of the main board 30, and the fixing plate 331 is fixedly connected to the main board 30.

[0083] In the elastic connector 330 at the radio frequency connection terminal 310, the fixing plate 331 is fixedly connected to the radio frequency connection terminal 310. For example, the fixing plate 331 can be soldered to the radio frequency connection terminal 310 to achieve electrical connection between the fixing plate 331 and the radio frequency connection terminal 310.

[0084] In the elastic connector 330 at the grounding connection end 320, the fixing plate 331 is fixedly connected to the grounding connection end 320. For example, the fixing plate 331 can be welded to the grounding connection end 320 to achieve an electrical connection between the fixing plate 331 and the grounding connection end 320.

[0085] The first connecting plate 332 is inclined relative to the fixed plate 331. One end of the first connecting plate 332 is connected to the fixed plate 331, and the other end of the first connecting plate 332 extends away from the fixed plate 331.

[0086] The second connecting plate 3343 can also be inclined relative to the fixed plate 331, and the degree of inclination of the second connecting plate 3343 relative to the fixed plate 331 can be the same as the degree of inclination of the first connecting plate 332 relative to the fixed plate 331. One end of the second connecting plate 3343 is connected to the end of the first connecting plate 332 away from the fixed plate 331, and the other end of the second connecting plate 3343 extends toward the end of the first connecting plate 332 near the fixed plate 331, and the second connecting plate 3343 and the first connecting plate 332 are spaced apart.

[0087] The end of the first connecting plate 332 away from the fixed plate 331 elastically abuts against the corresponding power supply connection part 211 or grounding connection part 231.

[0088] In the elastic connector 330 at the radio frequency connection end 310, the end of the first connecting plate 332 away from the fixed plate 331 elastically abuts against the power supply connection 211 to press the power supply connection 211.

[0089] refer to Figure 13 The end of the first connecting plate 332 away from the fixed plate 331 is subjected to pressure from the first part 210 or the power supply connection part 211 toward the fixed plate 331, and moves toward the fixed plate 331 and undergoes elastic deformation. The elastic restoring force of the first connecting plate 332 causes the end of the first connecting plate 332 away from the fixed plate 331 to press the power supply connection part 211, thereby improving the connection strength and reliability between the power supply connection part 211 and the radio frequency connection terminal 310.

[0090] In the elastic connector 330 at the grounding connection end 320, the end of the first connecting plate 332 away from the fixed plate 331 elastically abuts against the grounding connection part to press the grounding connection part.

[0091] The end of the first connecting plate 332 away from the fixed plate 331 is subjected to pressure from the third part 230, or the ground connection part 231, toward the fixed plate 331, and moves toward the fixed plate 331, undergoing elastic deformation. The elastic restoring force of the first connecting plate 332 causes the end of the first connecting plate 332 away from the fixed plate 331 to press the ground connection part 231, thereby improving the connection strength and reliability between the ground connection part 231 and the ground connection terminal 320.

[0092] In some possible implementations of the embodiments of this application, reference is made to Figure 12 and Figure 13 The first connecting plate 332 has a protrusion 3321 at the end away from the fixing plate 331. The protrusion 3321 is located on the side of the first connecting plate 332 away from the fixing plate 331, that is, on the side of the first connecting plate 332 facing the rear cover 120. The protrusion 3321 abuts against the corresponding power supply connection 211 or ground connection 231.

[0093] In the elastic connector 330 at the RF connection terminal 310, the protrusion 3321 corresponds to and abuts against the power supply connection 211. When the first connecting plate 332 is deformed, since the protrusion 3321 protrudes from the side of the first connecting plate 332 away from the fixed plate 331, the protrusion 3321 can still abut against the power supply connection 211, which improves the reliability and stability of the connection between the elastic connector 330 and the power supply connection 211.

[0094] In the elastic connector 330 at the grounding connection end 320, the protrusion 3321 corresponds to and abuts against the ground connection part 231. When the first connecting plate 332 is deformed, since the protrusion 3321 protrudes from the side of the first connecting plate 332 away from the fixed plate 331, the protrusion 3321 can still abut against the ground connection part 231, which improves the reliability and stability of the connection between the elastic connector 330 and the ground connection part 231.

[0095] In some possible implementations of the embodiments of this application, reference is made to Figure 7 , Figure 8 and Figure 9 The mounting plate 112 may be provided with a first positioning post 1124 and a second positioning post 1125 on the side opposite to the rear cover 120.

[0096] refer to Figure 8 The first part 210 is provided with a first positioning hole 212, and a first positioning post 1124 is inserted into the first positioning hole 212 to position the first part 210 and the mounting plate 112, thereby reducing the positioning difficulty of the first part 210 when it is attached to the mounting plate 112.

[0097] refer to Figure 9The third part 230 is constructed with a second positioning hole 232, and a second positioning post 1125 is inserted into the second positioning hole 232 to position the third part 230 and the mounting plate 112, thereby reducing the positioning difficulty of the third part 230 when it is attached to the mounting plate 112.

[0098] In some possible implementations of the embodiments of this application, reference is made to Figure 3 A third positioning post 1126 can be provided at the bottom of the groove 1122. (Reference) Figure 4 and Figure 5 The second part 220 is constructed with a third positioning hole 221, and a third positioning post 1126 is inserted into the third positioning hole 221 to position the second part 220 and the mounting plate 112, thereby reducing the positioning difficulty of the second part 220 when it is attached to the bottom of the groove 1122.

[0099] In some possible implementations of the embodiments of this application, the NFC antenna 20 can be a flexible printed circuit antenna, so that the NFC antenna 20 can be freely bent, folded and attached, which reduces the assembly difficulty of the NFC antenna 20 and the mounting plate 112 and improves the assembly flexibility.

[0100] Furthermore, the metal radiator (copper foil) pattern of the flexible printed circuit antenna can be fabricated using a high-precision etching process, and the trace shape and size can be precisely matched to the radio frequency band requirements (such as 13.56MHz for the NFC antenna 20), ensuring signal radiation efficiency. At the same time, the substrate of the flexible printed circuit antenna has excellent insulation properties, which can effectively isolate electromagnetic interference from other components on the motherboard 30, reduce signal reflection loss, and improve communication stability.

[0101] The second part 220 is bonded to the bottom of the groove 1122, and the first part 210 and the third part 230 are bonded to the side of the mounting plate 112 away from the back cover 120, reducing the space occupied by the NFC antenna 20.

[0102] In some possible implementations of this application, the side of the second part 220 away from the bottom of the groove 1122 is flush with the side of the mounting plate 112 facing the rear cover 120, so that the side of the second part 220 away from the bottom of the groove 1122 does not protrude from the side of the mounting plate 112 facing the rear cover 120, thereby reducing the thickness of the second part 220 and the mounting plate 112 as a whole in the direction perpendicular to the surface of the mounting plate 112, and thus reducing the thickness of the electronic device.

[0103] In some possible implementations of the embodiments of this application, reference is made to Figure 1 and Figure 2 The housing 10 may also include a front housing 130, which is disposed on the side of the middle frame 110 away from the rear cover 120.

[0104] refer to Figure 2 The electronic device may also include a display screen 40, which is disposed on the side of the front cover 130 away from the rear cover 120. The display screen 40 is electrically connected to the motherboard 30 so that the display screen 40 can display image information.

[0105] In some possible implementations of the embodiments of this application, the electronic device provided in the embodiments of this application can be implemented in various forms. For example, the electronic device described in this application may include mobile terminals such as mobile phones, tablets, laptops, handheld computers, personal digital assistants (PDAs), portable media players (PMPs), navigation devices, wearable devices, smart bracelets, pedometers, etc., as well as fixed terminals such as digital TVs and desktop computers.

[0106] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. An electronic device, comprising: The application relates to a mobile phone shell, which comprises a shell (10), an NFC antenna (20) and a mainboard (30). The shell (10) comprises a middle frame (110) and a back cover (120), and the back cover (120) covers one side of the middle frame (110) along the thickness direction. The middle frame (110) comprises a frame (111) and a mounting plate (112), and the mounting plate (112) is connected to the inner side of the frame (111). The mainboard (30) is arranged on the side of the mounting plate (112) away from the back cover (120). The mounting plate (112) has an open edge (1121) arranged opposite to and spaced from part of the frame (111), and the side of the mounting plate (112) facing the back cover (120) is configured with a groove (1122) recessed away from the back cover (120), one end of the extending direction of the groove (1122) penetrates the open edge (1121), and the bottom of the other end of the extending direction of the groove (1122) is configured with a via hole (1123) in communication with the groove (1122). The NFC antenna (20) comprises a first part (210), a second part (220) and a third part (230) connected in sequence, the second part (220) is arranged in the groove (1122), and the side of the second part (220) facing the back cover (120) is opposite to the back cover (120); the first part (210) penetrates the via hole (1123) and is connected to the side of the mounting plate (112) away from the back cover (120); the third part (230) bypasses the open edge (1121) and is connected to the side of the mounting plate (112) away from the back cover (120); and the first part (210) and the third part (230) are respectively electrically connected to the mainboard (30). The side of the mainboard (30) facing the mounting plate (112) is provided with a radio frequency connection end (310) and a grounding connection end (320). The NFC antenna (20) has a feed connection part (211) and a ground connection part (231). The feed connection part (211) is arranged on the first part (210), and the feed connection part (211) is electrically connected to the radio frequency connection end (310). The ground connection part (231) is arranged on the third part (230), and the ground connection part (231) is electrically connected to the grounding connection end (320). The radio frequency connection end (310) and the grounding connection end (320) are respectively provided with elastic connecting members (330), the elastic connecting members (330) have electrical conductivity, and the elastic connecting members (330) are electrically connected to the mainboard (30).

2. The electronic device of claim 1, wherein, The feed connection part (211) and the ground connection part (231) are respectively elastically abutted against the corresponding elastic connecting members (330) and are subjected to the downward pressing force of the elastic connecting members (330) towards the back cover (120). ​ 3. The electronic device of claim 2, wherein, The elastic connecting piece (330) comprises a fixing plate (331), a first connecting plate (332) and a second connecting plate (3343); The plate surface of the fixing plate (331) is parallel to the plate surface of the main plate (30), and the fixing plate (331) is fixedly connected to the main plate (30); The first connecting plate (332) is arranged obliquely relative to the fixing plate (331), one end of the first connecting plate (332) is connected to the fixing plate (331), and the other end of the first connecting plate (332) extends away from the fixing plate (331); One end of the second connecting plate (3343) is connected to the end of the first connecting plate (332) away from the fixing plate (331), the other end of the second connecting plate (3343) extends towards the end of the first connecting plate (332) close to the fixing plate (331), and the second connecting plate (3343) is arranged in a spaced manner relative to the first connecting plate (332); The end of the first connecting plate (332) away from the fixing plate (331) is in elastic abutment with the corresponding power supply connection part (211) or the grounding connection part (231).

4. The electronic device of claim 3, wherein, The end of the first connecting plate (332) away from the fixing plate (331) is provided with a protruding part (3321), the protruding part (3321) is located on the side of the first connecting plate (332) away from the fixing plate (331), and the protruding part (3321) is in abutment with the corresponding power supply connection part (211) or the grounding connection part (231).

5. The electronic device of any of claims 1-4, wherein, The side of the mounting plate (112) away from the rear cover (120) is provided with a first positioning column (1124) and a second positioning column (1125); The first part (210) is configured with a first positioning hole (212), and the first positioning column (1124) is arranged in the first positioning hole (212); The third part (230) is configured with a second positioning hole (232), and the second positioning column (1125) is arranged in the second positioning hole (232).

6. The electronic device of any of claims 1-4, wherein, The bottom of the groove (1122) is provided with a third positioning column (1126), the second part (220) is configured with a third positioning hole (221), and the third positioning column (1126) is arranged in the third positioning hole (221).

7. The electronic device of any of claims 1-4, wherein, The NFC antenna (20) is a flexible printed circuit antenna, the second part (220) is bonded to the bottom of the groove (1122), and the first part (210) and the third part (230) are respectively bonded to the side of the mounting plate (112) away from the rear cover (120).

8. The electronic device of any of claims 1-4, wherein, The side of the second part (220) away from the bottom of the groove (1122) is flush with the side of the mounting plate (112) towards the rear cover (120).

9. The electronic device of any of claims 1-4, wherein, The shell (10) further comprises a front shell (130), and the front shell (130) is arranged on the side of the middle frame (110) away from the rear cover (120). The electronic device further comprises a display screen (40) arranged on the side of the front shell (130) away from the back cover (120), and the display screen (40) is electrically connected with the mainboard (30).

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