Electronic device

Abstract

The invention belongs to the technical field of electronic equipment, and particularly relates to electronic equipment. The invention aims to solve the problem of low communication performance of an NFC antenna in related electronic equipment. The electronic equipment comprises a shell, an NFC (Near Field Communication) antenna and a mainboard, the second part of the NFC antenna is arranged in the groove in the side, facing the rear cover, of the mounting plate, and the side, facing the rear cover, of the second part is opposite to the rear cover, so that the second part is not prone to being shielded by other components in the mounting space, and the communication performance of the NFC antenna is improved. Besides, the second part is arranged in the groove, so that the height of the second part protruding out of the notch of the groove is reduced, the thickness of the second part and the mounting plate as a whole in the direction perpendicular to the plate surface of the mounting plate is reduced, and the thickness of the electronic equipment is further reduced.

Description

TECHNICAL FIELD

[0001] Embodiments of the present application relate to the technical field of electronic devices, and in particular, to an electronic device. BACKGROUND

[0002] The shell of an electronic device is usually assembled by a front shell, a middle frame and a back cover. A mainboard is installed inside the shell. An NFC (Near Field Communication) antenna is usually installed on the middle frame and electrically connected to the mainboard to realize near-field electromagnetic induction coupling at a frequency of 13.56 MHz, complete non-contact signal transmission and energy transmission between the electronic device and an external device, and realize the near-field communication function.

[0003] In the related art, the middle frame is composed of a frame and a back plate. The back plate is located inside the frame. The NFC antenna is usually attached to the back plate. As the thickness of the electronic device decreases, the components inside the frame become more compact. Some components may block the NFC antenna, resulting in reduced communication performance of the NFC antenna. SUMMARY

[0004] Therefore, the main purpose of embodiments of the present application is to provide an electronic device to solve the technical problem of low communication performance of the NFC antenna in related electronic devices.

[0005] To achieve the above purpose, embodiments of the present application provide an electronic device, comprising: a shell, an NFC antenna and a mainboard.

[0006] The shell comprises a middle frame and a back cover. The back cover covers one side of the middle frame in the thickness direction.

[0007] The middle frame comprises a frame and a mounting plate. The mounting plate is connected to the inner side of the frame.

[0008] The mainboard is arranged on the side of the mounting plate away from the back cover.

[0009] The mounting plate has an open edge. The open edge is arranged in a spaced manner with the frame. The side of the mounting plate facing the back cover is configured with a groove recessed away from the back cover. One end of the extension direction of the groove penetrates the open edge. The bottom of the other end of the extension direction of the groove is configured with a via hole. The via hole is in communication with the groove.

[0010] The NFC antenna comprises a first part, a second part and a third part connected in sequence. The second part is arranged in the groove, and the side of the second part facing the back cover is opposite to the back cover. The first part penetrates the via hole and is connected to the side of the mounting plate away from the back cover. The third part bypasses the open edge and is connected to the side of the mounting plate away from the back cover. The first part and the third part are electrically connected to the mainboard, respectively.

[0011] In some embodiments that can include the above-mentioned embodiments, the main plate is provided with a radio frequency connection end and a ground connection end on a side of the main plate facing the mounting plate;

[0012] The NFC antenna has a feed connection part and a ground connection part;

[0013] The feed connection part is arranged on the first part, and the feed connection part is electrically connected with the radio frequency connection end;

[0014] The ground connection part is arranged on the third part, and the ground connection part is electrically connected with the ground connection end.

[0015] In some embodiments that can include the above-mentioned embodiments, the radio frequency connection end and the ground connection end are respectively provided with elastic connecting pieces, the elastic connecting pieces have electrical conductivity, and the elastic connecting pieces are electrically connected with the main plate;

[0016] The feed connection part and the ground connection part are respectively elastically abutted with corresponding elastic connecting pieces and are subjected to a downward pressure of the elastic connecting pieces towards the back cover.

[0017] In some embodiments that can include the above-mentioned embodiments, the elastic connecting pieces include a fixed plate, a first connecting plate, and a second connecting plate;

[0018] The plate surface of the fixed plate is parallel to the plate surface of the main plate, and the fixed plate is fixedly connected with the main plate;

[0019] The first connecting plate is arranged obliquely relative to the fixed plate, one end of the first connecting plate is connected with 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 with the end of the first connecting plate away from the fixed plate, the other end of the second connecting plate extends towards the end of the first connecting plate close to the fixed plate, and the second connecting plate is arranged in a spaced-apart manner with the first connecting plate;

[0021] The end of the first connecting plate away from the fixed plate is elastically abutted with the corresponding feed connection part or ground connection part.

[0022] In some embodiments that can include the above-mentioned embodiments, the end of the first connecting plate away from the fixed plate is provided with a protruding part, the protruding part is located on a side of the first connecting plate away from the fixed plate, and the protruding part is abutted with the corresponding feed connection part or ground connection part.

[0023] In some embodiments that can include the above-mentioned embodiments, the mounting plate is provided with a first positioning column and a second positioning column on a side of the mounting plate away from the back cover;

[0024] The first part is configured with a first positioning hole, and the first positioning column is arranged in the first positioning hole;

[0025] The third part is configured with a second positioning hole, and the second positioning column is arranged in the second positioning hole.

[0026] In some embodiments which can comprise the above-mentioned embodiments, the groove bottom is provided with a third positioning column, the second part is configured with a third positioning hole, and the third positioning column is arranged in the third positioning hole.

[0027] In some embodiments which can comprise the above-mentioned embodiments, the NFC antenna is a flexible printed circuit antenna, the second part is bonded to the groove bottom, and the first part and the third part are respectively bonded to the side of the mounting plate away from the back cover.

[0028] In some embodiments which can comprise the above-mentioned embodiments, the side of the second part away from the groove bottom is flush with the side of the mounting plate facing the back cover.

[0029] In some embodiments which can comprise the above-mentioned embodiments, the shell further comprises a front shell, and the front shell is arranged on the side of the middle frame away from the back cover.

[0030] The electronic device further comprises a display screen, and the display screen is arranged on the side of the front shell away from the back cover and electrically connected to the mainboard.

[0031] The electronic device provided by the embodiments of the present application comprises a shell, an NFC antenna and a mainboard. The second part of the NFC antenna is arranged in the groove on the 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, thereby reducing the thickness of the second part and the mounting plate as a whole in the direction perpendicular to the surface of the mounting plate, and further reducing the thickness of the electronic device. BRIEF DESCRIPTION OF DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0033] Figure 1 The structural schematic diagram of the electronic device provided by the embodiments of the present application is shown in the figure;

[0034] Figure 2 The structural schematic diagram of the electronic device provided by the embodiments of the present application is shown in the figure;

[0035] Figure 3 The structural schematic diagram of the middle frame of the electronic device provided by the embodiments of the present application is shown in the figure;

[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, main board; 310, radio frequency connection end; 320, ground connection end; 330, elastic connecting piece; 331, fixed plate; 332, first connecting plate; 3321, protruding part; 3343, second connecting plate;

[0050] 40, display screen. DETAILED DESCRIPTION

[0051] First, those skilled in the art should understand that the embodiments are only used to explain the technical principles of the application, and are not intended to limit the protection scope of the application. Those skilled in the art can adjust them as needed to adapt to specific application occasions.

[0052] Second, it should be noted that in the description of the embodiments of the application, the terms indicating the direction or positional relationship of the terms "in", "out" and the like are based on the direction or positional relationship shown in the drawings, which is only for the convenience of description, and does not indicate or imply that the described device or component must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the application.

[0053] In addition, it should be noted that in the description of the embodiments of the application, unless otherwise specified and limited, the terms "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication inside two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of the application can be understood according to the specific circumstances.

[0054] In order to make the purpose, technical scheme and advantages of the embodiments of the application more clear, the technical scheme in the embodiments of the application will be described clearly and completely in the following with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are part of the embodiments of the application, rather than all the embodiments. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the application.

[0055] In order to solve the problem of low communication performance of the NFC antenna in the electronic device in the related art, the electronic device provided in the embodiments of the application reduces the shielding of the NFC antenna by the components inside the shell by setting the second part of the NFC antenna on the side of the mounting plate facing the back cover, and improves the communication performance of the NFC antenna.

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

[0057] It should be noted that, in the description of the embodiments of the present application, the "front side" refers to the side of the electronic device facing the user during normal use. The "rear side" refers to the side opposite the front side, that is, the side of the electronic device facing away from the user during normal use.

[0058] With reference to Figure 1 and Figure 2 , the present embodiment provides an electronic device, comprising a housing 10, an NFC antenna 20 and a mainboard 30. The NFC antenna 20 and the mainboard 30 are both arranged in the housing 10.

[0059] With reference to Figure 1 and Figure 2 , the housing 10 comprises a middle frame 110 and a back cover 120, and the back cover 120 covers one side of the middle frame 110 in the thickness direction. The thickness direction of the middle frame 110 is consistent with the thickness direction of the electronic device. The back cover 120 and the middle frame 110 enclose an installation space, and the installation space is used to arrange part of the components of the electronic device.

[0060] With reference to Figure 2 , 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.

[0061] The mainboard 30 is arranged on the side of the mounting plate 112 away from the back cover 120.

[0062] The mounting plate 112 has an open edge 1121, and the open edge 1121 is arranged opposite and spaced apart from part of the frame 111.

[0063] With reference to Figure 3 , 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, and one end of the extension direction of the groove 1122 penetrates the open edge 1121. The other end of the extension direction of the groove 1122 is configured with a via hole 1123, and the via hole 1123 communicates with the groove 1122.

[0064] With reference to Figure 4 , the NFC antenna 20 comprises a first part 210, a second part 220 and a third part 230 connected in sequence.

[0065] With reference to Figure 2 and Figure 5 , 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 the back cover 120, that is, the side of the second part 220 facing away from the bottom of the groove 1122 is opposite the back cover 120, so that the second part 220 is not easily blocked by other components in the installation space, and the communication performance of the NFC antenna 20 is improved.

[0066] In addition, the second portion 220 is arranged in the groove 1122, which reduces the height of the second portion 220 protruding from the groove of the groove 1122, thereby reducing the thickness of the second portion 220 and the mounting plate 112 as a whole in the direction perpendicular to the plate surface of the mounting plate 112, and further reducing the thickness of the electronic device.

[0067] With reference to Figure 5 , Figure 6 , Figure 7 and Figure 8 , the first portion 210 passes through the via hole 1123 and is connected to the side of the mounting plate 112 away from the back cover 120, so as to be electrically connected to the main board 30 located on the front side of the mounting plate 112.

[0068] With reference to Figure 5 , Figure 7 and Figure 9 , the third portion 230 passes around the open edge 1121 and is connected to the side of the mounting plate 112 away from the back cover 120, so as to be electrically connected to the main board 30 located on the front side of the mounting plate 112.

[0069] With reference to Figure 10 , the first portion 210 and the third portion 230 are electrically connected to the main board 30, respectively, to realize near-field electromagnetic induction coupling in the 13.56 MHz frequency band, complete non-contact signal transmission and energy transmission between the electronic device and the external device, that is, realize the near-field communication function of the electronic device through the NFC antenna 20.

[0070] In some possible implementation manners of the embodiments of the present application, with reference to Figure 11 , the main board 30 is provided with a radio frequency connection end 310 and a ground connection end 320 on the side facing the mounting plate 112.

[0071] With reference to Figure 4 and Figure 11 , the NFC antenna 20 has a feed connection portion 211 and a ground connection portion 231.

[0072] The feed connection portion 211 is arranged in the first portion 210, and the feed connection portion 211 is electrically connected to the radio frequency connection end 310 to transmit radio frequency signals.

[0073] In the transmitting state, the 13.56 MHz high-frequency electric signal generated by the NFC chip on the main board 30 is input into the NFC antenna 20 through the electrically connected radio frequency connection end 310 and feed connection portion 211, and the NFC antenna 20 converts the electric signal into an alternating magnetic field to be radiated outward.

[0074] In the receiving state, the induced electric signal generated by the external magnetic field is inducted by the NFC antenna 20, and is transmitted back to the NFC chip on the main board 30 through the electrically connected feed connection portion 211 and radio frequency connection end 310 for demodulation and decoding.

[0075] The feed-to-ground connection part 231 is arranged on the third part 230, and is electrically connected with the ground connection end 320 to form a ground loop, thereby ensuring signal stability and impedance matching.

[0076] The high-frequency radio frequency signal needs a complete loop for effective transmission, and the ground path provided by the feed-to-ground connection part 231 can form a closed loop between the NFC antenna 20 and the NFC chip on the mainboard 30, thereby reducing signal leakage.

[0077] In some possible implementation manners of the embodiments of the present application, referring to Figure 12 The radio frequency connection end 310 and the ground connection end 320 are respectively provided with an elastic connecting piece 330, the elastic connecting piece 330 has electrical conductivity, and the elastic connecting piece 330 is electrically connected with the mainboard 30.

[0078] Referring to Figure 13 The feed-to-ground connection part 211 and the feed-to-ground connection part 231 are respectively elastically abutted against the corresponding elastic connecting piece 330 and are subjected to the downward pressing force of the elastic connecting piece 330 towards the back cover 120.

[0079] That is, the feed-to-ground connection part 211 is elastically abutted against the elastic connecting piece 330 arranged on the radio frequency connection end 310, and the elastic connecting piece 330 is elastically deformed to exert a downward pressing force on the feed-to-ground connection part 211 towards the back cover 120, so that the elastic connecting piece 330 and the feed-to-ground connection part 211 are pressed against each other, thereby improving the connection strength and reliability of the feed-to-ground connection part 211 and the radio frequency connection end 310.

[0080] The feed-to-ground connection part 231 is elastically abutbed against the elastic connecting piece 330 arranged on the ground connection end 320, and the elastic connecting piece 330 is elastically deformed to exert a downward pressing force on the feed-to-ground connection part 231 towards the back cover 120, so that the elastic connecting piece 330 and the feed-to-ground connection part 231 are pressed against each other, thereby improving the connection strength and reliability of the feed-to-ground connection part 231 and the ground connection end 320.

[0081] In some possible implementation manners of the embodiments of the present application, referring to Figure 12 and Figure 13 The elastic connecting piece 330 can include a fixed plate 331, a first connecting plate 332 and a second connecting plate 3343. The fixed plate 331, the first connecting plate 332 and the second connecting plate 3343 can be integrally arranged and have electrical conductivity.

[0082] The plate surface of the fixed plate 331 is parallel to the plate surface of the mainboard 30, and the fixed plate 331 is fixedly connected to the mainboard 30.

[0083] In the elastic connecting piece 330 at the radio frequency connecting end 310, the fixed plate 331 is fixedly connected to the radio frequency connecting end 310, for example, the fixed plate 331 can be welded with the radio frequency connecting end 310 to realize the electrical connection between the fixed plate 331 and the radio frequency connecting end 310.

[0084] In the elastic connecting piece 330 at the grounding connecting end 320, the fixed plate 331 is fixedly connected to the grounding connecting end 320, for example, the fixed plate 331 can be welded with the grounding connecting end 320 to realize the electrical connection between the fixed plate 331 and the grounding connecting end 320.

[0085] The first connecting plate 332 is arranged obliquely 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 arranged obliquely 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 consistent with 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, the other end of the second connecting plate 3343 extends towards the end of the first connecting plate 332 close to the fixed plate 331, and the second connecting plate 3343 is arranged spaced apart from the first connecting plate 332.

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

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

[0089] Reference Figure 13 The end of the first connecting plate 332 away from the fixed plate 331 is subjected to the pressure of the first part 210 or the power feeding connecting part 211 towards the fixed plate 331 and moves towards the fixed plate 331 to elastically deform, and the elastic restoring force of the first connecting plate 332 presses the power feeding connecting part 211 with the end of the first connecting plate 332 away from the fixed plate 331, thereby improving the connection strength and reliability of the power feeding connecting part 211 and the radio frequency connecting end 310.

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

[0091] The end of the first connecting plate 332 away from the fixing plate 331 is pressed by the third part 230 or the grounding connection part 231 towards the fixing plate 331, and is elastically deformed to move towards the fixing plate 331, and the elastic restoring force of the first connecting plate 332 presses the end of the first connecting plate 332 away from the fixing plate 331 against the grounding connection part 231, thereby improving the connection strength and reliability of the grounding connection part 231 and the grounding connection end 320.

[0092] In some possible implementation manners of the embodiments of the present application, referring to Figure 12 and Figure 13 , the end of the first connecting plate 332 away from the fixing plate 331 is provided with a protruding part 3321, and the protruding part 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 towards the rear cover 120. The protruding part 3321 abuts against the corresponding power supply connection part 211 or the grounding connection part 231.

[0093] In the elastic connecting piece 330 at the power supply connection end 310, the protruding part 3321 corresponds to and abuts against the power supply connection part 211, and when the first connecting plate 332 is deformed, the protruding part 3321 still abuts against the power supply connection part 211 because the protruding part 3321 protrudes from the side of the first connecting plate 332 away from the fixing plate 331, thereby improving the reliability and stability of the connection between the elastic connecting piece 330 and the power supply connection part 211.

[0094] In the elastic connecting piece 330 at the grounding connection end 320, the protruding part 3321 corresponds to and abuts against the grounding connection part 231, and when the first connecting plate 332 is deformed, the protruding part 3321 still abuts against the grounding connection part 231 because the protruding part 3321 protrudes from the side of the first connecting plate 332 away from the fixing plate 331, thereby improving the reliability and stability of the connection between the elastic connecting piece 330 and the grounding connection part 231.

[0095] In some possible implementation manners of the embodiments of the present application, referring to Figure 7 , Figure 8 and Figure 9 , the side of the mounting plate 112 away from the rear cover 120 can be provided with a first positioning column 1124 and a second positioning column 1125.

[0096] Referring to Figure 8 , 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 to position the first part 210 and the mounting plate 112, thereby reducing the positioning difficulty of the first part 210 when being attached to the mounting plate 112.

[0097] Referring to Figure 9The third part 230 is configured with a second positioning hole 232, and a second positioning column 1125 is arranged in 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 being attached to the mounting plate 112.

[0098] In some possible implementation manners of the embodiments of the present application, referring to Figure 3 The groove 1122 can be provided with a third positioning column 1126 at the bottom of the groove. Figure 4 and Figure 5 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 to position the second part 220 and the mounting plate 112, thereby reducing the positioning difficulty of the second part 220 when being attached to the bottom of the groove 1122.

[0099] In some possible implementation manners of the embodiments of the present application, the NFC antenna 20 can be a flexible printed circuit antenna, so that the NFC antenna 20 can be freely bent, curved and attached, thereby reducing the assembly difficulty of the NFC antenna 20 and the mounting plate 112 and improving the assembly flexibility.

[0100] In addition, the metal radiator (copper foil) pattern of the flexible printed circuit antenna can be made by a high-precision etching process, and the wire shape and size can be accurately matched with the radio frequency band requirement (such as 13.56 MHz of the NFC antenna 20), thereby ensuring the signal radiation efficiency. Meanwhile, the base material of the flexible printed circuit antenna has good insulation, which can effectively isolate the electromagnetic interference of other components on the mainboard 30, reduce signal reflection loss, and improve communication stability.

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

[0102] In some possible implementation manners of the embodiments of the present 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 back 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 back cover 120, thereby reducing the thickness of the second part 220 and the mounting plate 112 as a whole along the direction perpendicular to the surface of the mounting plate 112, and further reducing the thickness of the electronic device.

[0103] In some possible implementation manners of the embodiments of the present application, referring to Figure 1 and Figure 2 The shell 10 can further include a front shell 130 arranged at the side of the middle frame 110 away from the back cover 120.

[0104] With reference to Figure 2 The electronic device can further include a display screen 40 disposed on a side of the front cover 130 facing away from the rear cover 120, the display screen 40 being electrically connected to the main board 30 so that the display screen 40 can display image information.

[0105] In some possible implementation manners of the embodiments of the present application, the electronic device provided by the embodiments of the present application can be implemented in various forms. For example, the electronic device described in the present application can include mobile terminals such as mobile phones, tablet computers, notebook computers, palmtop computers, personal digital assistants (PDA), portable media players (PMP), navigation devices, wearable devices, smart bands, pedometers, and the like, and fixed terminals such as digital TVs, desktop computers, and the like.

[0106] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. An electronic device, characterized in that, include: Housing (10), NFC antenna (20) and motherboard (30); The housing (10) includes a middle frame (110) and a rear cover (120), the rear cover (120) covering one side of the middle frame (110) along the thickness direction; The middle frame (110) includes a side frame (111) and a mounting plate (112), the mounting plate (112) being connected to the inside of the side frame (111); The motherboard (30) is disposed on the side of the mounting plate (112) opposite to the rear cover (120); The mounting plate (112) has an open edge (1121), which is partially opposite to and spaced apart from the frame (111); 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) extending through the open edge (1121), and the bottom of the groove at the other end of the groove (1122) extending through the groove (1122) has a through hole (1123) communicating with the groove (1122); The NFC antenna (20) includes a first part (210), a second part (220), and a third part (230) connected in sequence; the second part (220) is disposed 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) passes through the through 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); the first part (210) and the third part (230) are electrically connected to the motherboard (30) respectively.

2. The electronic device according to claim 1, characterized in that, The motherboard (30) is provided with a radio frequency connection terminal (310) and a ground connection terminal (320) on the side facing the mounting plate (112). The NFC antenna (20) has a power supply connection (211) and a ground connection (231). The power supply connection (211) is disposed on the first part (210), and the power supply connection (211) is electrically connected to the radio frequency connection terminal (310); The ground connection part (231) is disposed in the third part (230), and the ground connection part (231) is electrically connected to the ground connection terminal (320).

3. The electronic device according to claim 2, characterized in that, 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 the elastic connectors (330) are electrically connected to the motherboard (30); The power supply connection (211) and the ground connection (231) respectively elastically abut against the corresponding elastic connector (330) and are subjected to the downward pressure of the elastic connector (330) toward the rear cover (120).

4. The electronic device according to claim 3, characterized in that, The elastic connector (330) includes a fixing plate (331), a first connecting plate (332) and a second connecting plate (3343); 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). 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). 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; The end of the first connecting plate (332) away from the fixed plate (331) is elastically abutted against the corresponding power supply connection part (211) or the ground connection part (231).

5. The electronic device according to claim 4, characterized in that, The first connecting plate (332) has a protrusion (3321) at one end away from the fixed plate (331). The protrusion (3321) is located on the side of the first connecting plate (332) away from the fixed plate (331). The protrusion (3321) abuts against the corresponding power supply connection (211) or ground connection (231).

6. The electronic device according to any one of claims 1-5, characterized in that, The mounting plate (112) is provided with a first positioning post (1124) and a second positioning post (1125) on the side opposite to the rear cover (120). The first part (210) is provided with a first positioning hole (212), and the first positioning post (1124) passes through the first positioning hole (212); The third part (230) is provided with a second positioning hole (232), and the second positioning post (1125) passes through the second positioning hole (232).

7. The electronic device according to any one of claims 1-5, characterized in that, The bottom of the groove (1122) is provided with a third positioning post (1126), and the second part (220) is constructed with a third positioning hole (221). The third positioning post (1126) passes through the third positioning hole (221).

8. The electronic device according to any one of claims 1-5, characterized in that, The NFC antenna (20) is a flexible printed circuit antenna. The second part (220) is bonded to the bottom of the groove (1122). The first part (210) and the third part (230) are respectively bonded to the side of the mounting plate (112) away from the back cover (120).

9. The electronic device according to any one of claims 1-5, characterized in that, 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).

10. The electronic device according to any one of claims 1-5, characterized in that, The housing (10) also includes a front housing (130), which is disposed on the side of the middle frame (110) opposite to the rear cover (120); The electronic device also includes a display screen (40), which is disposed on the side of the front cover (130) away from the rear cover (120) and is electrically connected to the motherboard (30).

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