Middle frame assembly and terminal equipment

Abstract

The invention discloses a middle frame assembly and terminal equipment. The middle frame assembly comprises a metal protection piece, a metal connecting piece and a metal bearing plate. The metal protection piece comprises an outer frame body. The metal connecting piece is fixedly arranged on the outer frame body. At least part of the metal bearing plate is arranged on the inner side of the outer frame body, and the metal bearing plate is fixedly connected with the outer frame body through the metal connecting piece. Wherein the middle frame assembly is provided with a frame antenna, and at least part of the frame antenna and part of the metal bearing plate are arranged in a spaced mode to form an antenna gap. At least one of the outer frame body, the metal connecting piece and the metal bearing plate is provided with a radiation branch knot connected with the frame antenna. The middle frame assembly can form an antenna with good communication performance, and the communication performance of the terminal equipment can be improved.

Description

Technical Field

[0001] The present disclosure relates to the field of electronic technology, and in particular to a middle frame assembly and a terminal device. Background Art

[0002] Mobile phones, tablet computers and other terminal devices have become indispensable technology products in people's life, study and entertainment. At present, most terminal devices use the middle frame component to carry related electronic devices, and the middle frame is used as the outer frame, which can also bring better holding experience and protection performance, and thus is increasingly favored by consumers.

[0003] In the related art, the middle frame assembly is used to arrange the antenna to form a frame antenna. However, the traditional frame antenna is affected by the frame structure, and it is difficult to improve its radiation performance, which is not conducive to improving the communication performance of the terminal device. Summary of the invention

[0004] The present disclosure provides a middle frame assembly and a terminal device. The middle frame assembly can form an antenna with good communication performance, which is beneficial to improving the communication performance of the terminal device.

[0005] The technical solution is as follows:

[0006] According to a first aspect of an embodiment of the present disclosure, a middle frame assembly is provided, comprising a metal protective member, a metal connector and a metal bearing plate. The metal protective member comprises an outer frame. The metal connector is fixed to the outer frame. At least a portion of the metal bearing plate is disposed on the inner side of the outer frame, and the metal bearing plate is fixedly connected to the outer frame through the metal connector. The middle frame assembly is provided with a frame antenna, and at least a portion of the frame antenna is spaced apart from a portion of the metal bearing plate to form an antenna gap. At least one of the outer frame, the metal connector and the metal bearing plate is provided with a radiation branch connected to the frame antenna.

[0007] The technical solution provided by the embodiments of the present disclosure may have the following beneficial effects:

[0008] In this way, by using the middle frame component to form a frame antenna, the space of the middle frame component can be fully utilized to arrange the antenna, reducing the difficulty of arranging the terminal device, making it easier to fully utilize the internal space of the terminal device, and making its structure more compact. In addition, by forming a radiation branch connected to the frame antenna, the radiation branch is used to improve the radiation performance of the frame antenna, thereby improving the communication performance of the terminal device.

[0009] The technical solution of the present disclosure is further described below:

[0010] In one embodiment, the metal connectors include at least two, and at least two of the metal connectors are spaced apart along the circumference of the outer frame. The metal connectors are fixed with the outer frame by welding and / or are integrally formed.

[0011] And / or, at least part of the outer frame forms a frame antenna. Or part of the outer frame is connected to one of part of the metal connector and part of the metal supporting plate to form a frame antenna.

[0012] And / or, on the orthographic projection plane of the middle frame assembly, at least one of a portion of the outer frame, at least a portion of the metal connector, and a portion of the metal bearing plate is protruded from the antenna gap to form a radiation branch.

[0013] In one of the embodiments, at least one of the metal connector and / or the outer frame includes at least one of a first protrusion and a first recess, and is inlaid and matched with the metal carrier.

[0014] In one embodiment, a portion of the metal carrier plate is insert-fitted into the first recess.

[0015] And / or, the first recess includes at least one of a first connecting hole and a first connecting groove.

[0016] In one embodiment, the metal connecting members include at least two and are spaced apart along the inner side of the outer frame.

[0017] And / or, at least one metal connecting member is provided with a plurality of first connecting holes.

[0018] In one embodiment, the metal carrier plate includes a carrier body and a connecting body. At least a portion of the carrier body is spaced apart from the frame antenna to form an antenna gap. The carrier body is fixedly connected to at least one of the connecting body and the metal connector. A portion of the connecting body is fixedly connected to the outer frame through the metal connector to form the frame antenna.

[0019] In one embodiment, at least one of the connecting body and the carrying body is inlaid with the metal connecting piece.

[0020] And / or, the metal connector is integrally formed with the outer frame, and the metal connector is fixedly connected to the connecting body and the outer frame to form at least a portion of the frame.

[0021] There are at least two metal connectors, which are spaced apart along the circumference of the outer frame. The bearing body is fixedly connected to at least one metal connector, and the connecting body is fixedly connected to one metal connector to form radiating branches.

[0022] In one embodiment, the metal connector is integrally formed with the outer frame.

[0023] And / or, the metal connecting piece includes a first recess, and at least one of the connecting body and the carrying body includes a first connecting portion embedded and matched with the first recess.

[0024] In one embodiment, the first recess includes a first connecting hole, and the first connecting portion includes a first connecting body that is embedded and matched with the first connecting hole.

[0025] And / or, the first recessed portion includes a first connecting groove, and the first connecting portion includes a second connecting body that is embedded and matched with the first connecting groove.

[0026] In one embodiment, the outer frame body includes an outer frame surface spaced relative to the first connecting body and an inner side surface arranged opposite to the outer frame surface. The first connecting groove is provided with a notch along the direction from the outer frame surface to the inner side surface, and the first connecting groove and the first connecting part are anti-disconnection matched in the direction from the outer frame surface to the inner side surface.

[0027] In one embodiment, the first recess includes a first connecting groove and a first connecting hole arranged at the bottom of the first connecting groove, and the first connecting portion includes a first connecting body embedded in the first connecting hole and a second connecting body embedded in the first connecting groove.

[0028] In one embodiment, the first connection hole is a through hole, and the depth direction of the first connection hole is arranged along the thickness direction of the outer frame.

[0029] In one embodiment, the first connection grooves include two and are spaced apart at two ends of the first connection hole; the second connection bodies correspond to the first connection grooves one by one and are spaced apart and fixedly disposed at two ends of the first connection body.

[0030] In one of the embodiments, the connecting body includes a feeder connected to the frame antenna feeder, and the feeder is fixedly connected to the outer frame through a metal connector.

[0031] In one embodiment, the feeder is provided with an internal threaded hole. Alternatively, the middle frame assembly further comprises a nut, at least a portion of which is embedded in the feeder;

[0032] And / or, the frame antenna includes a first antenna provided with a feeder, and the first antenna includes at least three radiation branches.

[0033] In one embodiment, the feeder includes at least two second connectors, and at least two of the second connectors are partially staggered and partially overlapped; the metal connector is provided with first connecting grooves corresponding to the second connectors one by one.

[0034] In one embodiment, the second connector is column-shaped.

[0035] And / or, at least two second connectors are arranged to intersect each other.

[0036] And / or, at least two first connecting grooves are arranged to intersect.

[0037] And / or, at least two second connectors have different cross-sectional sizes.

[0038] In one embodiment, the connecting body includes a grounding conductor connected to the frame antenna ground, a portion of the grounding conductor is fixedly connected to the outer frame through a metal connector, and another portion of the grounding conductor is grounded to the supporting body.

[0039] In one of the embodiments, the ground conductor is provided with at least two first connection holes.

[0040] And / or, the frame antenna includes a second antenna provided with a ground conductor, and the second antenna includes at least three radiation branches.

[0041] In one of the embodiments, the middle frame assembly further includes an insulating member fixedly connected to the metal supporting plate and the metal protective member, and a portion of the insulating member is filled in the antenna gap.

[0042] In one embodiment, at least one of the metal protective member, the metal connecting member and the metal supporting plate is provided with a second connecting portion, and the second connecting portion is embedded and matched with the insulating member.

[0043] In one embodiment, the second connecting portion includes at least one of a second protrusion and a second recess.

[0044] And / or, the frame antenna is provided with a second connecting portion.

[0045] And / or, at least one of the metal protective member and the metal connecting member is provided with a second connecting portion, and the metal supporting plate is also provided with a second connecting portion, and both are inlaid and matched with the insulating member.

[0046] In one embodiment, the second recess includes one of a second connecting hole or a second connecting groove.

[0047] And / or, the insulating member is provided with an embedded body embedded in the second recess.

[0048] In one embodiment, the second connecting parts include at least two and are spaced apart along the inner side of the outer frame.

[0049] And / or, at least one second connecting portion is provided with a plurality of second connecting grooves.

[0050] In one embodiment, the frame antenna includes a first end portion having a radiation branch, the first end portion is spaced apart from other portions of the outer frame to form a gap, and the gap is connected to the antenna gap, wherein at least a portion of the insulating member is filled in the gap.

[0051] In one of the embodiments, the first end portion includes at least one of a third protrusion and a third recess.

[0052] And / or, the metal connector is fixedly connected to a portion of the metal supporting plate and the outer frame, and cooperates with a portion of the insulating member to form a frame.

[0053] In one embodiment, the third recess includes one of a third connecting hole or a third connecting groove.

[0054] In one of the embodiments, on the orthographic projection plane in the thickness direction of the middle frame assembly, a portion of the first end portion is inclined.

[0055] In one of the embodiments, on the orthographic projection plane in the thickness direction of the middle frame assembly, along the direction away from the frame antenna, at least a portion of the first end portion is inclined toward a direction close to the metal bearing plate;

[0056] Alternatively, the first end includes a first body that is spaced apart from other parts of the outer frame to form a break and a second body that is bent and connected to the first body; on the orthographic projection plane in the thickness direction of the middle frame assembly, along the width direction of the antenna gap, the second body is inclined toward the direction close to the metal supporting plate.

[0057] In one embodiment, the second body includes a first side wall for forming a fracture; on the orthographic projection plane in the thickness direction of the middle frame assembly, at least a portion of the first side wall is arc-shaped and bends in a direction away from the radiator.

[0058] In one embodiment, the strength of the metal guard is greater than the strength of the metal carrier plate.

[0059] In one embodiment, the metal protective member is at least one of titanium metal, titanium alloy, and stainless steel alloy, and the metal supporting plate is at least one of aluminum metal, magnesium metal, aluminum alloy, or magnesium alloy.

[0060] And / or, the metal protective member and the metal connecting member are integrally formed, and the metal protective member is die-casted through the metal connecting member and the metal supporting plate.

[0061] According to a second aspect of the embodiments of the present disclosure, a terminal device is also provided, including an electronic device and a middle frame assembly in any of the above embodiments, wherein the electronic device is arranged in the middle frame assembly and is electrically connected to the border antenna.

[0062] The technical solution provided by the embodiments of the present disclosure may have the following beneficial effects:

[0063] The terminal device utilizes the middle frame assembly in any of the above embodiments to form an antenna with good communication performance, thereby improving the communication performance of the terminal device.

[0064] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0065] BRIEF DESCRIPTION OF THE DRAWINGS The drawings constituting a part of the present disclosure are used to provide a further understanding of the present disclosure. The illustrative embodiments of the present disclosure and the description thereof are used to explain the present disclosure and do not constitute an improper limitation on the present disclosure.

[0066] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0067] Figure 1 It is a schematic diagram of the structure of a terminal device shown in an embodiment.

[0068] Figure 2 It is a schematic diagram of the partial structure of a middle frame assembly shown in an embodiment.

[0069] Figure 3 for Figure 2 The structural explosion diagram of the middle frame assembly is shown.

[0070] Figure 4 for Figure 3 The diagram shows an exploded view of the structure of the middle frame assembly from another perspective.

[0071] Figure 5 It is a schematic diagram of the partial structure of a middle frame assembly shown in another embodiment.

[0072] Figure 6 for Figure 5 A half-section schematic diagram of the middle frame assembly in the width direction is shown.

[0073] Figure 7 for Figure 5 The structural explosion diagram of the middle frame assembly is shown.

[0074] Figure 8 It is a schematic diagram of the partial structure of a metal protective member shown in an embodiment.

[0075] Fig. 9 FIG. 4 is a schematic diagram of a first recess shown in an embodiment.

[0076] Fig.10 Schematic diagram of the structure of a first antenna shown in an embodiment.

[0077] Fig.11 FIG. 4 is a schematic diagram of the structure of a second antenna shown in an embodiment.

[0078] Fig.12 for Fig.11 A partial exploded schematic diagram of the connecting body and the supporting body is shown.

[0079] Fig.13 for Fig.11 A partially enlarged schematic diagram of the first end of the frame antenna is shown.

[0080] Fig.14 Schematic diagram of the hardware structure of a terminal device shown in an embodiment.

[0081] Description of reference numerals:

[0082] 10. Terminal device; 11. Middle frame assembly; 11a. Frame antenna; 101. First antenna; 102. Second antenna; 103. First end; 103a. Third recess; 103b. First body; 103c. Second body; 1031. First side wall; 11b. Antenna gap; 11c. Radiation branch; 11d. Break; 100. Metal protective part; 110. Outer frame; 111. Outer frame surface; 112. Inner side surface; 200. Metal connector; 210. First protrusion; 220. First recess; 221. First connection hole; 222. First connection groove; 201. Notch; 223. First mating surface; 300. Metal carrier plate; 3 10. Carrying body; 320. Connecting body; 321. First body; 322. Second body; 323. Feeder; 301. Internal threaded hole; 324. Grounding conductor; 330. First connecting part; 331. First connecting body; 332. Second connecting body; 340. Second connecting part; 341. Accommodating groove; 342. Second connecting groove; 343. Second connecting hole; 400. Insulating member; 410. Embedded body; 12. Electronic device; 12a. Processing component; 12b. Memory; 12c. Power supply component; 12d. Multimedia component; 12e. Audio component; 12f. Input / output interface; 12g. Sensor component; 12h. Communication component. DETAILED DESCRIPTION

[0083] In order to make the purpose, technical solution and advantages of the present disclosure more clear, the present disclosure is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be understood that the specific implementation methods described here are only used to explain the present disclosure and do not limit the protection scope of the present disclosure.

[0084] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which the present disclosure belongs. The terms used herein in the specification of the present disclosure are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure.

[0085] Mobile phones, tablet computers, wearable devices and other terminal devices have become indispensable technology products in people's lives, learning and entertainment. With the development of diversified functions of terminal devices, there are many types and brands of terminal devices, which makes it possible for consumers to choose from a lot of terminal devices. How to win the favor of consumers has become an issue that terminal device manufacturers pay more and more attention to.

[0086] like Figure 1 As shown, in some embodiments of the present disclosure, a terminal device 10 is provided, including a middle frame assembly 11 and an electronic device 12 , wherein the electronic device 12 is disposed in the middle frame assembly 11 .

[0087] Among them, Figures 2 to 4 As shown, the middle frame assembly 11 includes a metal protective member 100, a metal connector 200 and a metal bearing plate 300. The metal protective member 100 includes an outer frame 110. The metal connector 200 is fixed to the outer frame 110. At least part of the metal bearing plate 300 is arranged on the inner side of the outer frame 110, and the metal bearing plate 300 is fixedly connected to the outer frame 110 through the metal connector 200. Among them, the middle frame assembly 11 is provided with a frame antenna 11a, and at least part of the frame antenna 11a is spaced apart from part of the metal bearing plate 300 to form an antenna gap 11b. At least one of the outer frame 110, the metal connector 200 and the metal bearing plate 300 is provided with a radiation branch 11c connected to the frame antenna 11a. In this way, by using the middle frame assembly 11 to form the frame antenna 11c, the space of the middle frame assembly 11 can be fully utilized to arrange the antenna, reduce the difficulty of arranging the terminal device 10, and facilitate full utilization of the internal space of the terminal device, making its structure more compact. Furthermore, by forming a radiation branch 11 c connected to the frame antenna, the radiation branch 11 c is used to improve the radiation performance of the frame antenna, thereby improving the communication performance of the terminal device 10.

[0088] In addition, the radiation branch 11c can be arranged in at least one of the outer frame 110, the metal connector 200 and the metal supporting plate 300, so that the design of the frame antenna 11a is flexible and convenient for debugging to obtain an antenna with better radiation performance.

[0089] In some embodiments, the strength of the metal protective member 100 is greater than the strength of the metal bearing plate 300. In this way, the metal bearing plate 300 with different strengths is connected to the outer frame 110 by the metal connector 200, so that the outer frame 110 with stronger strength can be used as a protective frame. The structural features required for the bearing device are set by using the metal bearing plate 300 with lower strength, which is easy to manufacture. In this way, the middle frame assembly 11 has good protection performance, and can reduce the difficulty of manufacturing and reduce production costs.

[0090] The terminal device 10 applies the above-mentioned middle frame assembly 11 , so that the terminal device 10 has good protection performance and is conducive to reducing the production cost of the terminal device 10 .

[0091] It should be noted that the metal bearing plate 300 should be understood in a broad sense and the specific structure of the metal bearing plate 300 can be various, for example, at least a part of the metal bearing plate 300 is in a plate shape to form a bearing structure of a bearing surface.

[0092] Optionally, in some embodiments, the metal bearing plate 300 is provided with a plate body and a connecting plate arranged at the edge of the plate body. At least one of the plate body and the connecting plate is provided with a bearing structure.

[0093] Optionally, in some embodiments, the electronic device 12 includes at least one of a display screen, a control mainboard, and the like.

[0094] In some embodiments, the material of the metal guard 100 and the material of the metal carrier plate 300 are metal materials, and the density of the metal carrier plate 300 is less than the density of the metal guard 100. In this way, the middle frame assembly 11 can meet the needs of the terminal device 10 to be thin and light, which is conducive to achieving the lightweight of the terminal device 10 and convenient to hold and / or carry.

[0095] In addition, by utilizing the metal properties of the metal protective member 100 and the metal carrier plate 300 , at least one of a shielding structure, a grounding structure, an antenna structure, etc. may be formed on the middle frame assembly 11 .

[0096] In some embodiments, the metal protective member 100 is at least one of titanium metal, titanium alloy, and stainless steel alloy. In this way, the outer frame 110 has good strength, good corrosion resistance, and good wear resistance, further improving the performance of the terminal device 10. The metal carrier plate 300 is at least one of aluminum metal, magnesium metal, aluminum alloy, or magnesium alloy. It is easy to manufacture and is conducive to achieving lightweight of the middle frame assembly 11.

[0097] Optionally, the metal protective member 100 is a titanium alloy, and the metal bearing plate 300 is an aluminum alloy. The processing difficulty of the middle frame assembly 11 is low, which is conducive to reducing the cost of large-area processing (especially CNC processing cost). Titanium alloy can also be used for protection and to improve the texture of the terminal device 10.

[0098] In some embodiments, the metal protection member 100 and the metal connector 200 are made of metal, and the metal connector 200 is welded and fixed to the outer frame 110 and / or integrally formed, which is easy to assemble and helps to reduce costs.

[0099] In one example, the material of the metal protection member 100 and the material of the metal connection member 200 are titanium alloy, and the two are integrally formed, which is helpful to reduce the assembly process, reduce the assembly error, and make the metal protection member 100 and the metal connection member 200 firmly connected.

[0100] In some embodiments, the metal protection member 100 is die-casted with the metal supporting plate 300 through the metal connector 200. This helps to reduce assembly processes, reduce assembly errors, and ensure that the metal protection member 100 is firmly connected to the metal supporting plate 300, thereby obtaining a reliably connected middle frame assembly 11.

[0101] In some embodiments, the metal connector 200 includes at least two, and at least two metal connectors 200 are spaced apart along the circumference of the outer frame 110. In this way, it is convenient to use at least two metal connectors 200 to form multiple connection points between the outer frame 110 and the metal bearing plate 300, thereby improving the connection strength between the two.

[0102] It should be noted that there may be multiple ways to fix the metal connector 200 and the metal carrier plate 300, including but not limited to at least one of embedding fit, snap fit, etc.

[0103] In some embodiments, at least one of the metal connector 200 and / or the outer frame 110 includes at least one of the first protrusion 210 and the first recess 220, and is inlaid with the metal bearing plate 300. In this way, by inlaying and matching at least one of the first protrusion 210 and the first recess 220 with the metal connector 200, the connection area between the two can be increased, so that the metal connector 200 and the metal bearing plate 300 are firmly fixed.

[0104] In addition, the first convex portion 210 and the first concave portion 220 can be easily integrated with the metal supporting plate 300 by die casting or injection molding.

[0105] It should be noted that there may be many specific implementations of the first convex portion 210, including but not limited to structures such as protrusions, convex ridges, convex hooks, and anti-slip convex strips.

[0106] In addition, at least one of the metal connector 200 and / or the outer frame 110 includes a plurality of first protrusions 210. Or at least one of the metal connector 200 and / or the outer frame 110 includes a plurality of first recesses 220. Or at least one of the metal connector 200 and / or the outer frame 110 includes a combination of at least one first protrusion 210 and at least one first recess 220.

[0107] It should be noted that there may be many specific implementations of the first recess 220 , including but not limited to structures such as a groove, a notch, a cavity, and a concave hole.

[0108] like Figure 3 , Figure 4 as well as Figure 8 As shown, in some embodiments, the first recess 220 includes at least one of a first connection hole 221 and a first connection groove 222. In this way, it is convenient to flow the liquid in the die-casting or injection molding process of the metal bearing plate 300 into at least one of the first connection hole 221 and the first connection groove 222, so that the liquid is fixed, and the metal connector 200 and / or the outer frame 110 are embedded and fixed with the metal bearing plate 300, the assembly efficiency is high, and the production cost of the middle frame assembly 11 is further reduced.

[0109] Optionally, in some embodiments, the metal carrier plate 300 includes a first connection portion 330 embedded in the first recess 220. Thus, the first connection portion 330 can be inserted into the first recess 220 to achieve embedding and fixing of the metal carrier plate 300 with the metal connector 200 and / or the outer frame 110.

[0110] like Fig. 9 As shown, in some embodiments, at least one metal connector 200 is provided with a plurality of first connection holes 221. Thus, the connection area between the metal connector 200 and the metal supporting plate 300 can be increased by using a plurality of first connection holes 221, further increasing the bonding strength between the two.

[0111] In one example, after the metal connector 200 and the metal protective member 100 are integrally formed, a plurality of first connection holes 221 of the metal connector 200 or the metal protective member 100 are roughened to increase the titanium-aluminum bonding strength and the bonding area.

[0112] Alternatively, if Fig. 9 As shown, a plurality of first connection holes 221 form an array of micro holes on the metal connection member 200 .

[0113] like Figure 3 as well as Figure 4 As shown, in some embodiments, the first recessed portion 220 includes a first connecting hole 221, and the first connecting portion 330 includes a first connecting body 331 embedded with the first connecting hole 221. In this way, through the embedding and matching of the first connecting hole 221 and the first connecting body 331, it is convenient to form a connection structure inside the two, improve the anti-slip performance, and realize the embedding and fixing of the metal bearing plate 300 and the metal connecting member 200 and / or the outer frame 110.

[0114] like Figure 3 as well as Figure 4As shown, in some embodiments, the first recess 220 includes a first connection groove 222, and the first connection portion 330 includes a second connection body 332 that is inlaid and matched with the first connection groove 222. In this way, through the inlay and match of the first connection groove 222 and the second connection body 332, a connection structure is formed on the surfaces of the two, so that the metal bearing plate 300 is inlaid and fixed with the metal connector 200 and / or the outer frame 110.

[0115] Alternatively, if Figure 4 As shown, in some embodiments, the outer frame 110 includes an outer frame surface 111 spaced relatively from the first connector 331 and an inner side surface 112 arranged relatively from the outer frame surface 111, and the first connecting groove 222 is provided with a notch 201 in the direction from the outer frame surface 111 to the inner side surface 112. And the first connecting groove 222 and the first connecting portion 330 are anti-detachment matched in the direction from the outer frame surface 111 to the inner side surface 112. In this way, the notch 201 is used to facilitate the liquid metal carrier plate 300 to flow into the first connecting groove 222 to solidify and form the first connector 331. Through the anti-detachment match between the first connecting groove 222 and the first connector 331, the outer frame 110 and the metal carrier plate 300 are more tightly connected in the width and / or length direction of the middle frame assembly 11.

[0116] It should be noted that the specific structure of the first connecting groove 222 can be various, such as a special-shaped groove, a polygonal groove, a partial circular groove, a partial elliptical groove, etc.

[0117] like Figure 3 , Figure 4 as well as Figure 6 As shown, in some embodiments, the first recess 220 includes a first connection groove 222 and a first connection hole 221 disposed at the bottom of the first connection groove 222, and the first connection portion 330 includes a first connection body 331 inlaid with the first connection hole 221 and a second connection body 332 inlaid with the first connection groove 222. In this way, it is convenient to use the first connection groove 222 to introduce the liquid metal carrier plate 300 into the first connection hole 221, so as to solidify in the first connection hole 221 and the first connection groove 222 to form an integrally formed first connection body 331 and a second connection body 332, thereby improving the connection strength between the outer frame 110 and the metal carrier plate 300.

[0118] Reference Figure 1 and Figure 6 As shown, the width direction of the middle frame assembly is the X-axis direction, the length direction is the Y-axis direction, and the thickness direction is the Z-axis direction. The smaller the thickness direction (Z-axis direction) of the middle frame assembly is, the lighter and thinner the terminal device will be.

[0119] like Figure 3 , Figure 4 as well as Figure 6As shown, in some embodiments, the first connection hole 221 is a through hole, and the depth direction of the first connection hole 221 is arranged along the thickness direction (Z direction) of the outer frame 110. In this way, the liquid metal carrier plate 300 is introduced into the first connection hole 221 by using the first connection groove 222, and flows out from the other side of the first connection hole 221, so as to solidify in the first connection hole 221 and the first connection groove 222 to form an integrally formed first connection body 331 and a second connection body 332, and at the same time, a clamping body that is clamped and matched with the second connection body 332 can be formed on the other side of the first connection hole 221, thereby preventing the carrier from being separated from the outer frame 110 along the thickness direction of the middle frame assembly 11, and further improving the connection strength between the outer frame 110 and the metal carrier plate 300.

[0120] like Figure 3 , Figure 4 as well as Figure 6 As shown, in some embodiments, the first connection groove 222 includes two, which are spaced apart at both ends of the first connection hole 221. The second connection bodies 332 correspond to the first connection grooves 222 one by one, and are spaced apart and fixed at both ends of the first connection body 331. In this way, the liquid metal carrier plate 300 is introduced into the first connection hole 221 by using the first connection grooves 222, and flows into another first connection groove 222 from the other side of the first connection hole 221, so as to solidify in the first connection hole 221 and the first connection groove 222 to form an integrally formed first connection body 331 and two second connection bodies 332, and the two second connection bodies 332 clamp the matching metal connector 200 and / or the outer frame 110, thereby preventing the carrier from being separated from the outer frame 110 along the thickness direction of the middle frame assembly 11, and further improving the connection strength between the outer frame 110 and the metal carrier plate 300.

[0121] Further, in some embodiments, the outer frame 110 includes a first mating surface 223, and along the thickness direction of the outer frame 110, the first mating surface 223 is adjacent to the first connecting portion 330, and relative to the first connecting portion 330, the first mating surface 223 is arranged close to the outer edge of the outer frame 110. The middle frame assembly 11 also includes an insulating member 400, and at least a portion of the insulating member 400 covers the first mating surface 223 and the first connecting body 331.

[0122] like Figure 6As shown, in some embodiments, the outer frame 110 includes an outer frame surface 111 and an inner side surface 112 arranged opposite to the outer frame surface 111. In the direction from the outer frame surface 111 to the inner side surface 112, at least a portion of the bearing metal member is spaced apart from the first mating surface 223 to form a receiving groove 341. At least a portion of the insulating member 400 is filled in the receiving groove 341 and covers the first mating surface 223 and the first connector 331. In this way, the insulating member 400 is accommodated by the receiving groove 341, which is easy to cover the first mating surface 223 and the first connector 331, so that the insulating member 400 is fixedly connected to the metal bearing plate 300 and the metal protective member 100, and the connection strength between the metal bearing plate 300 and the metal protective member 100 can be further improved.

[0123] like Figure 6 As shown, in some embodiments, the first mating surface 223 includes two, which are spaced apart at both ends of the first connection hole 221, and the insulating member 400 at least partially covers the two first mating surfaces 223 and the two first connectors 331. In this way, the insulating member 400 can wrap the first mating surface 223 and the first connector 331 along the thickness direction of the middle frame assembly 11, so that the insulating member 400 is embedded and fixed with the metal bearing plate 300 and the metal protective member 100, which can further improve the connection strength between the metal bearing plate 300 and the metal protective member 100.

[0124] It can be understood that when the metal connector 200 and the outer frame 110 are integrally formed, the metal connector 200 is a part of the outer frame 110. The first concave portion 220 and / or the first convex portion 210 of the metal connector 200 can also be a part of the outer frame 110.

[0125] Of course, in other embodiments, the outer frame 110 is provided with one of the first convex portion 210 in any of the above embodiments and / or the first concave portion 220 in any of the above embodiments.

[0126] like Figure 5 as well as Figure 7 As shown, in some embodiments, the middle frame assembly 11 further includes an insulating member 400, and the insulating member 400 is fixedly connected to the metal bearing plate 300 and the metal protective member 100. In this way, by using the insulating member 400 to be fixedly connected to the metal bearing plate 300 and the metal protective member 100, the connection strength between the metal bearing plate 300 and the metal protective member 100 can be further improved.

[0127] In addition, the insulating member 400 can also be used to form at least one of an insulating installation area, an insulating connection portion, an insulating installation portion, etc. on the middle frame assembly 11 , which can meet the installation requirements of different types of electronic devices 12 .

[0128] In some embodiments, the material of the metal guard 100, the material of the metal connector 200, and the material of the metal carrier plate 300 are metal materials. Part of the outer frame 110 and part of the metal carrier plate 300 are spaced to form an antenna gap 11b, so that part of the outer frame 110 forms a border antenna 11a, or part of the outer frame 110 and one of the other parts of the metal connector 200 and the metal carrier plate 300 form a border antenna 11a. In this way, the border antenna 11a is formed by using the middle frame assembly 11, and the space of the middle frame assembly 11 can be fully utilized to arrange the antenna, reduce the difficulty of arranging the terminal device 10, and facilitate full utilization of the internal space of the terminal device 10, making its structure more compact.

[0129] In some embodiments, at least one of the outer frame 110, the metal connector 200 and the metal carrier plate 300 is provided with a radiation branch 11c connected to the frame antenna 11a. In this way, the radiation branch 11c can improve the radiation performance of the frame antenna 11a and make full use of the internal space of the middle frame assembly 11.

[0130] Optionally, the outer frame 110 is provided with a radiation branch 11c connected to the frame antenna 11a.

[0131] Optionally, the metal connector 200 is provided with a radiation branch 11c connected to the frame antenna 11a.

[0132] Optionally, the metal carrier plate 300 is provided with a radiation branch 11 c connected to the frame antenna 11 a.

[0133] Optionally, the outer frame 110 cooperates with the metal connector 200 to form a radiation branch 11 c connected to the frame antenna 11 a.

[0134] Optionally, the outer frame 110 cooperates with the metal connector 200 and a portion of the metal carrier plate 300 to form a radiation branch 11 c connected to the frame antenna 11 a.

[0135] Optionally, in some embodiments, on the orthographic projection plane in the thickness direction of the middle frame assembly 11, at least one of a portion of the outer frame body 110, at least a portion of the metal connector 200, and a portion of the metal supporting plate 300 protrudes from the antenna gap 11b to form a radiation branch 11c.

[0136] like Figures 10 to 12As shown, in some embodiments, the metal bearing plate 300 includes a bearing body 310 and a connecting body 320, at least a portion of the bearing body 310 is spaced apart from the frame antenna 11a to form an antenna gap 11b, and the connecting body 320 cooperates with the outer frame 110 to form the frame antenna 11a. There are at least two metal connectors 200, which are spaced apart along the circumference of the outer frame 110. Among them, the bearing body 310 is fixedly connected to at least one metal connector 200, and the connecting body 320 is fixedly connected to a metal connector 200 to form a radiation branch 11c. In this way, the metal connector 200 can realize the fixed connection between the bearing body 310 and the outer frame 110 by using at least one metal connector 200, and the bearing body 310 and the outer frame 110 are connected into a whole. At the same time, other metal connectors 200 are used to fix the connection body 320 so that the connection body 320 cooperates with the outer frame 110 to form a border antenna 11a, which is beneficial to increase the thickness of the border antenna 11a, reduce impedance, and improve its radiation performance.

[0137] In addition, the connection body 320 and the outer frame 110 are combined to form a border antenna 11a, and the connection body 320 is easy to process and also convenient to adjust the performance requirements of different border antennas 11a, further reducing the manufacturing difficulty of the middle frame assembly 11 and facilitating implementation.

[0138] In combination with the above-mentioned embodiment of the first connecting portion 330, the first connecting portion 330 is disposed on the connecting body 320 (refer to Fig.12 shown).

[0139] like Fig.11 as well as Fig.12 As shown, in some embodiments, the connecting body 320 includes a first body 321 fixedly connected to the metal connecting member 200 and a second body 322 bent and connected to the first body 321, and the second body 322 is spaced from the carrying body 310 along the thickness direction of the middle frame assembly 11 to form a radiation branch 11c. In this way, it is convenient to avoid the carrying body 310 to increase the clearance space of the frame antenna 11a, which is conducive to further improving the performance of the frame antenna 11a.

[0140] It can be understood that the first body 321 is provided with a first connecting portion 330 .

[0141] As can be seen from the accompanying drawings, a portion of the connecting body 320 is protruded from the metal bearing plate 300 along the thickness direction (ie, the Z direction) of the middle frame assembly 11 .

[0142] See you later Fig.10As shown, in some embodiments, the connection body 320 includes a feeder 323 connected to the frame antenna 11a, and the feeder 323 is fixedly connected to the outer frame 110 through the metal connector 200. In addition, the feeder 323 is formed by the connection body 320, and the connection body 320 is easy to process and easy to adjust the feeding requirements of different frame antennas 11a, further reducing the manufacturing difficulty of the middle frame assembly 11 and being easy to implement. The feeder 323 is fixedly connected to the outer frame 110 through the metal connector 200, which is conducive to increasing the volume of the feeder 323, reducing the feeding resistance, and improving the radiation performance of the frame antenna 11a.

[0143] In addition, it is helpful to reduce the manufacturing difficulty of the metal protective member 100 and reduce the manufacturing cost.

[0144] Optionally, in some embodiments, the feeder 323 is provided with an internal threaded hole 301. Alternatively, the middle frame assembly 11 further includes a nut, at least part of which is embedded in the feeder 323. This facilitates the use of threaded fasteners such as bolts to fix the transmission component to the feeder 323, thereby achieving feeding of the frame antenna 11a.

[0145] In some embodiments, the frame antenna 11a includes a first antenna 101 provided with a feeder 323, and the first antenna 101 includes at least three radiation branches 11c.

[0146] Optionally, the first antenna 101 is a corner antenna. The feeder 323 is disposed at a corner of the middle frame assembly 11. In this way, the corner space can be fully utilized to increase the volume of the radiator, the feed impedance of the corner antenna can be reduced, and the performance of the corner antenna can be improved.

[0147] In combination with the above-mentioned embodiment of the second connector 332, in some embodiments, the feed body 323 includes at least two second connectors 332, and at least two of the second connectors 332 are partially staggered and partially overlapped; the metal connector 200 is provided with first connection grooves 222 corresponding to the second connectors 332. In this way, the use of at least two second connectors 332 and the corresponding at least two first connection grooves 222 is conducive to improving the connection strength and contact area between the metal connector 200 and the feed body, and further reducing the impedance.

[0148] Optionally, in some embodiments, the second connector 332 is columnar.

[0149] Optionally, in some embodiments, at least two second connectors 332 are arranged to intersect each other.

[0150] Optionally, in some embodiments, at least two first connecting grooves 222 are arranged to intersect each other.

[0151] Optionally, in some embodiments, at least two second connectors 332 have different cross-sectional sizes.

[0152] The above embodiment of "at least two second connectors 332 are partially staggered and partially overlapped" can be referred to in the attached Figure 8 To understand, Figure 8 The first connecting hole 221 is changed into a first connecting groove 222 .

[0153] like Fig.11 As shown, in some embodiments, the connecting body 320 includes a grounding conductor 324 connected to the frame antenna 11a, a portion of the grounding conductor 324 is fixedly connected to the outer frame 110 through the metal connector 200, and another portion of the grounding conductor 324 is grounded to the carrier body 310. In this way, the grounding conductor 324 is used to realize the grounding connection between the frame antenna 11a and the carrier body 310, thereby realizing the grounding of the frame antenna 11a.

[0154] In some embodiments, the ground conductor 324 is provided with at least two first connectors 331 , so as to improve the connection strength between the ground conductor 324 and the metal connector 200 .

[0155] like Fig.11 As shown, in some embodiments, the frame antenna 11a includes a second antenna 102 provided with a ground conductor 324, and the second antenna 102 includes at least three radiating branches 11c. In this way, antenna designs with different frequency bands and performance requirements can be met.

[0156] like Figure 10 to Figure 11 As shown, in some embodiments, the middle frame assembly 11 also includes an insulating member 400, which is fixedly connected to the metal carrier plate 300 and the metal protective member 100, and part of the insulating member 400 is filled in the antenna gap 11b. In this way, by using the insulating member 400 to be fixedly connected to the metal carrier plate 300 and the metal protective member 100, the connection strength between the metal carrier plate 300 and the metal protective member 100 can be further improved. Filling at least part of the insulating member 400 in the antenna gap 11b avoids the formation of a cantilever structure and improves the strength of the frame antenna 11a. At the same time, the insulating member 400 is used to increase the connection area between the metal carrier plate 300 and the metal protective member 100, thereby improving the strength and stability of the middle frame assembly 11.

[0157] Optionally, in some embodiments, at least a portion of the outer frame 110 is spaced from at least a portion of the metal carrier plate 300 to form a receiving groove 341, and at least a portion of the insulating member 400 is filled in the receiving groove 341. In this way, the receiving groove 341 is used to accommodate the liquid insulating member 400. After the insulating member 400 is fixed, it is easy to achieve fixed connection between the insulating member 400, the metal carrier plate 300 and the metal protective member 100, thereby improving the connection strength between the metal carrier plate 300 and the metal protective member 100.

[0158] like Figure 7 as well as Figure 8 As shown, in some embodiments, at least one of the metal guard 100, the metal connector 200 and the metal carrier plate 300 is provided with a second connection portion 340, and the second connection portion 340 is embedded with the insulating member 400. In this way, by embedding the second connection portion 340 with the insulating member 400, the connection area between the two can be increased, so that the metal guard 100 and the metal carrier plate 300 are firmly fixed.

[0159] Optionally, at least one of the metal guard 100 and the metal connector 200 is provided with a second connector 340, and the metal carrier plate 300 is also provided with a second connector 340, and both are inlaid with the insulating member 400. The insulating member 400 can easily improve the connection strength between the metal guard 100 and the metal carrier plate 300.

[0160] In some embodiments, the second connection portion 340 includes at least one of a second convex portion (not shown) and a second concave portion. In this way, by using at least one of the second convex portion and the second concave portion to be embedded with the insulating member 400, the connection area can be increased, so that the metal protective member 100 and the metal supporting plate 300 are firmly fixed.

[0161] In addition, the second convex portion and the second concave portion can be easily integrated with the insulating member 400 by using a process such as injection molding.

[0162] It should be noted that there may be many specific implementations of the second convex portion, including but not limited to structures such as protrusions, convex ridges, convex hooks, and anti-slip convex strips.

[0163] In addition, at least one of the metal supporting plate 300, the metal connecting member 200 and the outer frame 110 includes a plurality of second protrusions. Or at least one of the metal supporting plate 300, the metal connecting member 200 and the outer frame 110 includes a plurality of second concave portions (see Figure 8 or at least one of the metal supporting plate 300, the metal connecting member 200 and the outer frame 110 includes at least one second protrusion and at least one second recess.

[0164] It should be noted that there may be many specific implementations of the second recess, including but not limited to structures such as a groove, a notch, a cavity, and a concave hole.

[0165] like Figure 7 as well as Figure 8 As shown, in some embodiments, the second recess includes one of a second connection hole 343 or a second connection groove 342. In this way, it is convenient to flow the liquid in the die-casting or injection molding process of the metal carrier plate 300 into at least one of the second connection hole 343 and the second connection groove 342, so that the liquid is fixed, and the insulating member 400 is embedded and fixed with at least one of the metal carrier plate 300, the metal connector 200 and the outer frame 110, so that the assembly efficiency is high, and the production cost of the middle frame assembly 11 is further reduced.

[0166] See you later Figure 7 As shown, in some embodiments, the insulating member 400 is provided with an embedding body 410 that is embedded with the second recess. In this way, the embedding body 410 can be inserted into the second recess to achieve embedding and fixing of the insulating member 400 with at least one of the metal supporting plate 300, the metal connecting member 200 and the outer frame 110.

[0167] like Figure 7 As shown, in some embodiments, the second connection parts 340 include at least two and are spaced apart along the inner side of the outer frame 110. In this way, it is convenient to use at least two second connection parts 340 to form multiple connection positions between the insulating member 400, the outer frame 110 and the metal supporting plate 300, thereby improving the connection strength of the three.

[0168] like Figure 7 As shown, in some embodiments, at least one second connection portion 340 is provided with a plurality of second connection grooves 342. Thus, the plurality of first connection holes 221 can increase the connection area between the insulating member 400 and the metal carrier plate 300 and / or the metal protective member 100, further increasing the bonding strength between the two.

[0169] See you later Figure 7 As shown, in one example, after the metal protective member 100 and the metal supporting plate 300 are die-cast, a plurality of second connecting grooves 342 of the metal supporting plate 300 and / or the metal protective member 100 are roughened to increase the bonding force between the insulating member 400 and the two and increase the bonding area.

[0170] Optionally, the plurality of first connection holes 221 form array microholes on the metal supporting plate 300 and / or the metal protective member 100 .

[0171] like Fig.13As shown, in some embodiments, the outer frame 110 includes a first end 103 having a radiation branch 11c, and the first end 103 is spaced apart from other parts of the outer frame 110 to form a break 11d, and the break 11d is connected to the antenna gap 11b. Among them, at least a portion of the insulating member 400 is filled in the break 11d. In this way, at least a portion of the insulating member 400 is filled in the break 11d to avoid forming a concave structure, and the appearance texture of the middle frame assembly 11 is improved.

[0172] like Fig.13 As shown, in some embodiments, the first end portion 103 includes at least one of a third protrusion and a third recess 103a. In this way, by using at least one of the third protrusion and the third recess 103a to be embedded with the insulating member 400, the connection area can be increased, so that the metal protective member 100 and the insulating member 400 are firmly fixed.

[0173] In addition, the third protrusion and the third recess 103 a can be easily integrated with the insulating member 400 by using a process such as injection molding.

[0174] It should be noted that there may be many specific implementations of the third convex portion, including but not limited to structures such as protrusions, convex ridges, convex hooks, and anti-slip convex strips.

[0175] It should be noted that there may be many specific implementations of the third recess 103a, including but not limited to structures such as a groove, a notch, a cavity, and a concave hole.

[0176] Optionally, in some embodiments, the third recess 103a includes at least one of a third connecting hole and a third connecting groove.

[0177] Optionally, in some embodiments, the metal connector 200 is fixedly connected to the connecting body 320 and the outer frame 110 , and cooperates with a portion of the insulating member 400 to form a frame.

[0178] like Fig.13 As shown, in some embodiments, on the orthographic projection plane in the thickness direction of the middle frame assembly 11, the first end portion 103 is inclined, so as to make full use of the antenna gap 11b space to extend the length of the long radiation branch 11c, so as to meet the design of the border antenna 11a with different frequency bands or performance requirements, and reduce the difficulty of arranging the border antenna 11a.

[0179] Specifically, in some embodiments, on the orthographic projection plane in the thickness direction of the middle frame assembly 11 , along the direction away from the frame antenna 11 a , at least a portion of the first end portion 103 is inclined toward the direction close to the metal bearing plate 300 .

[0180] like Fig.13As shown, in one embodiment, the first end portion 103 includes a first body 103b spaced apart from other parts of the outer frame 110 to form a gap 11d and a second body 103c bent and connected to the first body 103b. On the orthographic projection plane in the thickness direction of the middle frame assembly 11, along the width direction of the antenna gap 11b, the second body 103c is inclined toward the metal bearing plate 300.

[0181] like Fig.13 As shown, in some embodiments, the second body 103c includes a first side wall 1031 for forming a fracture 11d. On the orthographic projection plane in the thickness direction of the middle frame assembly 11, at least part of the first side wall 1031 is arc-shaped and bends in a direction away from the frame antenna 11a. In this way, the arc-shaped first side wall 1031 can increase the sealing area and avoid overflow of glue during secondary injection molding.

[0182] The terminal device 10 may include a handheld device, an in-vehicle device, a cellular phone, a smart phone, a personal digital assistant (PDA) computer, a tablet computer, a laptop computer, a car computer, a wearable device, etc.

[0183] Reference Fig.14 As shown, in some embodiments, the electronic device 12 may also include one or more of the following components: a processing component 12a, a memory 12b, a power component 12c, a multimedia component 12d, an audio component 12e, an input / output interface 12f, a sensor component 12g, and a communication component 12h.

[0184] The processing component generally controls the overall operation of the terminal device, such as operations associated with display, phone calls, data communications, camera operations, and recording operations. The processing component may include one or more processors to execute instructions to complete all or part of the steps of the above method. In addition, the processing component may include one or more modules to facilitate interaction between the processing component and other components. For example, the processing component may include a multimedia module to facilitate interaction between the multimedia component and the processing component.

[0185] The memory is configured to store various types of data to support operations on the terminal device. Examples of such data include instructions for any application or method configured to operate on the terminal device, contact data, phone book data, messages, pictures, videos, etc. The memory can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic disk or optical disk.

[0186] The power supply component provides power to various components of the terminal device. The power supply component may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power to the terminal device.

[0187] The multimedia component includes the display module of the present disclosure, which is convenient for human-computer interaction. If the display module includes a touch panel, the display module can be implemented as a touch screen to receive input signals from the user. The touch panel includes one or more touch sensors to sense touch, slide, and gestures on the touch panel. The touch sensor can not only sense the boundaries of the touch or slide action, but also detect the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component includes a front camera and / or a rear camera. When the terminal device is in an operating mode, such as a shooting mode or a video mode, the front camera and / or the rear camera can receive external multimedia data. Each front camera and rear camera can be a fixed optical lens system or have focal length and optical zoom capabilities.

[0188] The audio component is configured to output and / or input audio signals. For example, the audio component includes a microphone (MIC), and when the terminal device is in an operating mode, such as a call mode, a recording mode, and a voice recognition mode, the microphone is configured to receive an external audio signal. The received audio signal can be further stored in a memory or sent via a communication component. In some embodiments, the audio component also includes a speaker configured to output an audio signal.

[0189] The input / output interface provides an interface between the processing component and the peripheral interface module, which may be a keyboard, a click wheel, buttons, etc. These buttons may include but are not limited to: a home button, a volume button, a start button, and a lock button.

[0190] The sensor assembly includes one or more sensors configured to provide various aspects of status assessment for the terminal device. For example, the sensor assembly can detect the open / closed state of the terminal device, the relative positioning of components, such as the display and keypad of the terminal device, and the sensor assembly can also detect the position change of the terminal device or a component of the terminal device, the presence or absence of user contact with the terminal device, the orientation or acceleration / deceleration of the terminal device, and the temperature change of the terminal device. The sensor assembly may include a proximity sensor configured to detect the presence of nearby objects without any physical contact. The sensor assembly may also include a photosensitive element, such as a CMOS or CCD image sensor, configured to be used in imaging applications. In some embodiments, the sensor assembly may also include an accelerometer, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

[0191] The communication component is configured to facilitate wired or wireless communication between the terminal device and other devices. The terminal device can access a wireless network based on a communication standard, such as WiFi, 2G, 3G, 4G or 6G, etc., or a combination thereof. In an exemplary embodiment, the communication component receives a broadcast signal or broadcast-related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component also includes a near field communication (NFC) module to facilitate short-range communication. For example, the NFC module can be implemented based on radio frequency identification (RFID) technology, infrared data association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology and other technologies.

[0192] In the description of the present disclosure, it needs to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present disclosure.

[0193] In addition, the terms "first", "second", etc. are constructed only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first", "second", etc. may explicitly or implicitly include at least one of the features. In the description of the present disclosure, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0194] In the present disclosure, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present disclosure can be understood according to specific circumstances.

[0195] In the present disclosure, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0196] It should be noted that when an element is referred to as being "fixed to", "disposed on", "fixedly disposed on" or "installed on" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element at the same time. Furthermore, when an element is considered to be "fixedly connected to" another element, the two may be fixed in a detachable connection or in a non-detachable connection, as long as the two can be fixed.

[0197] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0198] The above embodiments only express several implementation methods of the present disclosure, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the inventive concept of the present disclosure, and these all belong to the protection scope of the present disclosure.

Claims

1. A middle frame assembly, characterized in that: include: A metal protective member, including an outer frame; A metal connector, fixed to the outer frame; as well as A metal bearing plate, at least a portion of which is disposed on the inner side of the outer frame, and the metal bearing plate is fixedly connected to the outer frame via the metal connector; Among them, the middle frame assembly is provided with a border antenna, at least part of the border antenna is spaced apart from part of the metal supporting plate to form an antenna gap; at least one of the outer frame, the metal connector and the metal supporting plate is provided with a radiation branch connected to the border antenna.

2. The middle frame assembly according to claim 1, characterized in that: The metal connectors include at least two, at least two of which are spaced apart along the circumference of the outer frame, and the metal connectors are fixed with the outer frame by welding and / or integrally formed; And / or, at least part of the outer frame forms the frame antenna; or part of the outer frame is connected to one of part of the metal connector and part of the metal carrier plate to form the frame antenna; And / or, on the orthographic projection plane in the thickness direction of the middle frame assembly, at least one of a portion of the outer frame body, at least a portion of the metal connector and a portion of the metal supporting plate protrudes from the antenna gap to form the radiation branch.

3. The middle frame assembly according to claim 1, characterized in that: At least one of the metal connecting member and / or the outer frame includes at least one of a first protrusion and a first recess, and is embedded and matched with the metal supporting member.

4. The middle frame assembly according to claim 3, characterized in that: Part of the metal bearing plate is inlaid and matched with the first recess; And / or, the first recess includes at least one of a first connecting hole and a first connecting groove.

5. The middle frame assembly according to claim 4, characterized in that: The metal connectors include at least two and are spaced apart along the inner side of the outer frame; And / or, at least one of the metal connecting members is provided with a plurality of first connecting holes.

6. The middle frame assembly according to claim 1, characterized in that: The metal supporting plate includes a supporting body and a connecting body. At least a portion of the supporting body is spaced apart from the border antenna to form the antenna gap. The supporting body is fixedly connected to at least one of the connecting body and the metal connecting member. A portion of the connecting body is fixedly connected to the outer frame via the metal connecting member to form the border antenna.

7. The middle frame assembly according to claim 6, characterized in that: At least one of the connecting body and the carrying body is inlaid and matched with the metal connecting piece; And / or, the metal connector is integrally formed with the outer frame, and the metal connector is fixedly connected to the connection body and the outer frame to form at least a portion of the frame; There are at least two metal connectors, which are spaced apart along the circumference of the outer frame; wherein the bearing body is fixedly connected to at least one of the metal connectors, and the connecting body is fixedly connected to one of the metal connectors to form the radiation branches.

8. The middle frame assembly according to claim 6, characterized in that: The metal connector is integrally formed with the outer frame; And / or, the metal connecting member includes a first recess, and at least one of the connecting body and the supporting body includes a first connecting portion embedded and matched with the first recess.

9. The middle frame assembly according to claim 8, characterized in that: The first recess includes a first connecting hole, and the first connecting portion includes a first connecting body that is embedded and matched with the first connecting hole; And / or, the first recess includes a first connecting groove, and the first connecting portion includes a second connecting body embedded in the first connecting groove.

10. The middle frame assembly according to claim 9, characterized in that: The outer frame body includes an outer frame surface relatively spaced from the first connecting body and an inner side surface arranged opposite to the outer frame surface, and the first connecting groove is provided with a notch along the direction from the outer frame surface to the inner side surface; and the first connecting groove and the first connecting part are anti-disengagement matched in the direction from the outer frame surface to the inner side surface.

11. The middle frame assembly according to claim 9, characterized in that: The first recess includes a first connecting groove and a first connecting hole arranged at the bottom of the first connecting groove, and the first connecting portion includes a first connecting body embedded in the first connecting hole and a second connecting body embedded in the first connecting groove.

12. The middle frame assembly according to claim 11, characterized in that: The first connection hole is a through hole, and a depth direction of the first connection hole is arranged along a thickness direction of the outer frame.

13. The middle frame assembly according to claim 12, characterized in that: The first connection grooves include two and are spaced apart at two ends of the first connection hole; the second connection bodies correspond to the first connection grooves one by one and are spaced apart and fixedly disposed at two ends of the first connection body.

14. The middle frame assembly according to any one of claims 6 to 13, characterized in that: The connecting body comprises a feeder connected to the frame antenna feeder, and the feeder is fixedly connected to the outer frame through the metal connecting piece.

15. The middle frame assembly according to claim 14, characterized in that: The feeder is provided with an internal threaded hole; or the middle frame assembly further includes a nut, at least a portion of which is embedded in the feeder; And / or, the frame antenna includes a first antenna provided with the feeder, and the first antenna includes at least three radiation branches.

16. The middle frame assembly according to claim 15, characterized in that: The feeder includes at least two second connectors, and at least two of the second connectors are partially staggered and partially overlapped; the metal connector is provided with first connecting grooves corresponding to the second connectors one by one.

17. The middle frame assembly according to claim 16, characterized in that: The second connector is columnar; and / or, at least two of the second connectors are arranged to intersect; And / or, at least two of the first connecting grooves are arranged to intersect; And / or, at least two of the second connectors have different cross-sectional sizes.

18. The middle frame assembly according to any one of claims 6 to 17, characterized in that: The connecting body comprises a grounding conductor connected to the ground of the frame antenna, a part of the grounding conductor is fixedly connected to the outer frame through the metal connecting piece, and another part of the grounding conductor is grounded to the supporting body.

19. The middle frame assembly according to claim 18, characterized in that: The grounding conductor is provided with at least two first connection holes; And / or, the frame antenna includes a second antenna provided with the ground conductor, and the second antenna includes at least three radiation branches.

20. The middle frame assembly according to any one of claims 1 to 19, characterized in that: The middle frame assembly also includes an insulating member fixedly connected to the metal bearing plate and the metal protective member, and a portion of the insulating member is filled in the antenna gap.

21. The middle frame assembly according to claim 20, characterized in that: At least one of the metal protective member, the metal connecting member and the metal supporting plate is provided with a second connecting portion, and the second connecting portion is embedded and matched with the insulating member.

22. The middle frame assembly according to claim 21, characterized in that: The second connecting portion includes at least one of a second convex portion and a second concave portion; And / or, the frame antenna is provided with the second connecting portion; And / or, at least one of the metal protective member and the metal connecting member is provided with the second connecting portion, and the metal supporting plate is also provided with the second connecting portion, and both are inlaid and matched with the insulating member.

23. The middle frame assembly according to claim 22, characterized in that: The second recess includes one of a second connection hole or a second connection groove; And / or, the insulating member is provided with an embedded body embedded and matched with the second recess.

24. The middle frame assembly according to claim 23, characterized in that: The second connecting parts include at least two and are arranged at intervals along the inner side of the outer frame; And / or, at least one of the second connecting parts is provided with a plurality of second connecting grooves.

25. The middle frame assembly according to claim 20, characterized in that: The frame antenna comprises a first end portion provided with the radiation branch, the first end portion is spaced apart from other portions of the outer frame to form a gap, and the gap is connected to the antenna gap; Wherein, at least a portion of the insulating member is filled in the fracture.

26. The middle frame assembly according to claim 25, characterized in that: The first end portion includes at least one of a third protrusion and a third recess; And / or, the metal connector is fixedly connected to a portion of the metal supporting plate and the outer frame, and cooperates with a portion of the insulating member to form a frame.

27. The middle frame assembly according to claim 26, characterized in that: The third recess includes at least one of a third connecting hole or a third connecting groove.

28. The middle frame assembly according to claim 27, characterized in that: On the orthographic projection plane in the thickness direction of the middle frame assembly, a portion of the first end portion is inclined.

29. The middle frame assembly according to claim 28, characterized in that: On the orthographic projection plane in the thickness direction of the middle frame assembly, along the direction away from the frame antenna, at least a portion of the first end portion is inclined toward the direction close to the metal bearing plate; Alternatively, the first end portion includes a first body spaced apart from other portions of the outer frame to form a break and a second body bent and connected to the first body; on the orthographic projection plane in the thickness direction of the middle frame assembly, along the width direction of the antenna gap, the second body is inclined toward the direction close to the metal supporting plate.

30. The middle frame assembly according to claim 29, characterized in that: The second body includes a first side wall for forming the fracture; on the orthographic projection plane in the thickness direction of the middle frame assembly, at least a portion of the first side wall is arc-shaped and bends in a direction away from the radiator.

31. The middle frame assembly according to claim 1, characterized in that: The strength of the metal protective member is greater than the strength of the metal supporting plate.

32. The middle frame assembly according to claim 31, characterized in that: The metal protective member is at least one of titanium metal, titanium alloy, and stainless steel alloy, and the metal bearing plate is at least one of aluminum metal, magnesium metal, aluminum alloy, or magnesium alloy; And / or, the metal protective member and the metal connecting member are integrally formed, and the metal protective member is die-casted through the metal connecting member and the metal supporting plate.

33. A terminal device, characterized in that: It comprises an electronic device and the middle frame assembly according to any one of claims 1 to 32, wherein the electronic device is arranged in the middle frame assembly and is electrically connected to the border antenna.

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