Mobile terminal

Abstract

The mobile terminal comprises a middle frame, a card holder assembly and a support, the middle frame comprises a body and a frame, the frame is arranged around the edge of the body, the card holder assembly is fixed to the body, at least part of the card holder assembly penetrates through the frame, the support is fixed to the body, the support comprises a support body and a limiting part formed on the support body, and the limiting part is arranged in the first direction. The support is directly fixed on the body of the middle frame through the support body, the number of openings of screw holes in the middle frame is reduced, the influence on the strength of the middle frame can be reduced, the structural stability of the mobile terminal is improved, the waterproof difficulty of the whole machine can be reduced, and the waterproof performance of the whole machine can be improved. The support is simple in structure, easy to assemble and small in size, the occupied space of the card support assembly and the support in the first direction can be reduced when the card support assembly and the support are installed on the middle frame, the thickness of the mobile terminal in the first direction is smaller, and therefore the design requirement that the whole mobile terminal is lighter and thinner can be met.

Description

Technical Field

[0001] The present application relates to the technical field of electronic equipment, and in particular to a mobile terminal. Background Art

[0002] As the functions of electronic devices become more and more powerful, their internal structures are becoming more and more complex. However, there has always been a demand for thinning and reducing the size of electronic devices, especially for foldable mobile terminals, such as foldable mobile phones, which poses a challenge to the space limiting solution of the card tray assembly in the thickness direction of the whole machine. Usually, the card tray assembly is fixed to the middle frame by adhesive bonding, and the bracket is pressed on the top of the card tray assembly to limit the thickness direction, but the bracket and the card tray assembly need to open screw holes near the axis area of ​​the middle frame and lock them with screws, which will take up more space in the thickness direction, and will also destroy the waterproof performance of the axis area and reduce the strength of the middle frame. In some existing designs, a snap groove is set on the side wall of the middle frame, and a snap protrusion is set on the bracket, so that the bracket and the middle frame are snapped and fixed by the snap protrusion and the snap groove, so that the bracket can press the card tray assembly to the middle frame, but a snap groove with sufficient snap space is set on the side wall of the middle frame, which needs to occupy more space in the thickness direction of the middle frame, and it is also impossible to meet the demand for thin and light electronic equipment. Summary of the invention

[0003] The purpose of the present application is to provide a mobile terminal to solve the problem in the prior art that the card tray assembly is fixed on the middle frame and occupies a large amount of space along the thickness direction of the entire device.

[0004] An embodiment of the present application provides a mobile terminal, including a middle frame, a card tray assembly and a bracket, the middle frame including a main body and a frame, the frame is arranged around the edge of the main body, the card tray assembly is fixed to the main body, and at least a portion of the card tray assembly is penetrated by the frame, the bracket is fixed to the main body, the bracket includes a frame and a limiting portion formed on the frame, and along a first direction, at least a portion of the card tray assembly is located between the limiting portion and the main body.

[0005] In the present application, the bracket can limit the card tray assembly along the first direction through the limiting part, and at the same time, the frame can provide a certain limit for the card tray assembly in the first direction, thereby improving the fixing effect of the card tray assembly on the middle frame. In addition, the bracket is directly fixed to the body of the middle frame through the frame body, which reduces the opening of the screw hole on the middle frame, can reduce the impact on the strength of the middle frame, improve the structural stability of the mobile terminal, and can also reduce the difficulty of waterproofing the whole machine and improve the waterproof performance of the whole machine. In particular, when the card tray assembly is arranged on a foldable mobile terminal near the hinge area of ​​the middle frame, the opening of the screw hole in the hinge area can be reduced, thereby reducing the difficulty of waterproofing the hinge area and improving the waterproof performance of the whole machine. In addition, the bracket structure in the mobile terminal of the embodiment of the present application is simple, easy to prepare, low in cost, easy to assemble, and can improve the assembly efficiency. The small size of the bracket can reduce the interference between the bracket and the card tray assembly, and can also reduce the space occupied in the first direction when the card tray assembly and the bracket are installed on the middle frame, so that the thickness of the mobile terminal in the first direction is thinner and lighter, thereby meeting the design requirements of a thinner mobile terminal.

[0006] In a possible design, along the second direction, the bracket is disposed on a side of the card tray assembly away from the frame, and the limiting portion extends along an edge of the frame toward the second direction.

[0007] In the present solution, the frame of the bracket and the frame of the middle frame can respectively limit the position of the two ends of the card tray assembly along the first direction along the second direction, thereby improving the fixing effect of the card tray assembly on the middle frame, and can also make the force on the two ends of the card tray assembly along the second direction more uniform, thereby preventing the risk of warping of the card tray assembly, and improving the structural stability of the card tray assembly fixed to the middle frame, thereby reducing the resistance when the smart card is inserted or removed, and facilitating the insertion or removal of the smart card.

[0008] In a possible design, along the second direction, the width of the limiting portion is d, and d≥0.3 mm.

[0009] In this solution, the width d of the limiting portion satisfies d ≥ 0.3 mm, so that the overlapping area between the limiting portion and the card tray assembly in the first direction is larger, reducing the influence of the fitting clearance and error on the fitting between the card tray assembly and the limiting portion of the bracket, so that the limiting portion of the bracket can stably limit the card tray assembly in the first direction, preventing the risk of displacement or deformation of the card tray assembly during use, and improving the structural stability of the card tray assembly and the mobile terminal.

[0010] In a possible design, the middle frame further includes a mounting protrusion, the mounting protrusion is convexly formed on the main body, the frame body is provided with a groove, and the groove is engaged with the mounting protrusion.

[0011] In this solution, when the bracket is assembled with the middle frame, it is only necessary to align the groove on the bracket with the installation protrusion on the middle frame and press it so that the bracket can be embedded and connected with the installation protrusion of the middle frame through the groove on the frame. The structure is simple, the connection is reliable, and it is easy to assemble. It can improve the assembly efficiency of the mobile terminal and save costs. In addition, the bracket occupies a small space on the middle frame, which improves the utilization rate of the installation space on the middle frame and is conducive to the integrated design of the mobile terminal.

[0012] In a possible design, the frame includes a supporting portion, a first bending portion and a second bending portion. Along the second direction, the first bending portion and the second bending portion are respectively arranged at two ends of the supporting portion. The first bending portion and the second bending portion are bent along the edge of the supporting portion toward a side close to the main body. The first bending portion, the second bending portion and the supporting portion are surrounded to form the groove.

[0013] In this solution, the structure of the bracket is more flexible, so that the bracket can adjust the opening size of the groove by adjusting the first bending portion and the second bending portion according to the width of the clamping protrusion of the middle frame along the second direction, thereby facilitating the embedding of the bracket and the middle frame, thereby reducing the difficulty of assembling the mobile terminal and further improving the assembly efficiency. In addition, in this structure, the groove does not need to be opened by equipment, which saves preparation costs and improves the preparation efficiency of the bracket.

[0014] In a possible design, the second bending portion is provided with a plurality of notches, the card tray assembly includes an elastic switch and a switch movable slot, at least a portion of the elastic switch is movably arranged in the switch movable slot, and at least one of the notches is arranged corresponding to the switch movable slot.

[0015] In this solution, at least one notch corresponds to the switch activity groove on the card tray assembly, so as to avoid interference between the bracket and the elastic switch, so as to ensure sufficient activity space for the elastic switch and the reliability of the function. In addition, the setting of the notch can also reduce the interference between the bracket and other components on the middle frame after it is installed on the middle frame, so as to improve the functional reliability of other components, and can also reduce the material usage and weight of the bracket while ensuring the overall strength of the bracket, thereby further saving costs and reducing the weight of the mobile terminal, which is conducive to the lightweight design requirements of the mobile terminal. In addition, the setting of multiple notches allows the second bending portion to easily produce a certain amount of slight deformation, increase the opening of the groove, thereby further reducing the difficulty of installing the bracket during assembly and improving assembly efficiency.

[0016] In a possible design, the first bending portion includes a first bending edge a and a second bending edge b, and along the third direction, the first bending edge a and the second bending edge b are located on both sides of the limiting portion.

[0017] In this solution, along the third direction, the first bending portion is reliably connected to the mounting protrusion, the bending edge a and the second bending edge b are arranged on both sides of the limiting portion, and the force of the bracket along the third direction is uniform, which can prevent the bracket from warping on both sides along the third direction or the bracket from detaching from the mounting protrusion, so that the mobile terminal has a higher structural stability. It can also reduce the risk of interference between the first bending portion and the card tray assembly, prevent the first bending portion and the card tray assembly from colliding or scratching during the assembly process, further reduce the difficulty of assembling the bracket, and improve the assembly efficiency of the mobile terminal. In addition, the first bending edge a and the second bending edge b are arranged on both sides of the limiting portion, so that the connection between the limiting portion and the supporting portion of the frame body can be made into a plane, so that the limiting portion and the supporting portion can jointly limit the card tray assembly along the first direction, improve the limiting effect of the bracket on the card tray assembly, and can also reduce the width design requirements of the width d of the limiting portion along the second direction, so as to further reduce the volume of the bracket, reduce the space occupied by the bracket, and meet the design requirements of a lighter and thinner mobile terminal.

[0018] In a possible design, the bracket further includes an abutment portion, which is folded outward along an edge of the second bending portion, and the main body is convexly provided with an abutment platform, and the abutment portion abuts against the abutment platform.

[0019] In this solution, after the bracket is installed on the middle frame, the abutment portion can abut against the abutment platform, thereby preventing the bracket from rotating in a direction away from the card tray assembly, thereby avoiding excessive gap between the limiting portion and the card tray assembly, reducing the limiting effect of the limiting portion on the card tray assembly, improving the installation stability of the bracket on the middle frame, and ensuring the limiting reliability of the limiting portion on the card tray assembly.

[0020] In a possible design, the abutting portion has an outwardly disposed overlapped edge, and the abutting portion abuts against the abutting platform via the overlapped edge.

[0021] In the present solution, the setting of the overlapping edge can reduce the roughness of the outer edge of the abutment portion away from the second bending portion, prevent burrs and other processing residues from scratching the middle frame or scratching the assembly workers, etc., and improve the smoothness of the outer edge of the abutment portion. The structure is easy to process and has low cost. At the same time, it can also increase the thickness of the abutment portion, so that the abutment portion is not easily deformed when abutting against the abutment platform, thereby improving the structural stability of the bracket.

[0022] In a possible design, the middle frame further includes a fence portion protruding from the surface of the main body, the fence portion and the mounting protrusion are spaced apart along the second direction, and at least a portion of the abutment platform is located between the mounting protrusion and the fence portion.

[0023] In this solution, the overlapping part of the fence part, the abutment platform and the mounting protrusion projected along the second direction can form a U-shaped groove on the middle frame. When the bracket is installed on the middle frame, the abutment part can extend along the U-shaped groove to provide a guide for the installation of the bracket, so that when the abutment part abuts the abutment platform, the through groove on the frame can be matched and engaged with the mounting protrusion, further reducing the difficulty of installing the bracket and improving the assembly efficiency. The abutment part and the second bent part are in the U-shaped groove formed by the fence part, the abutment platform and the mounting protrusion, which can further improve the connection strength between the bracket and the middle frame and prevent the bracket from being separated from the middle frame along the first direction.

[0024] In a possible design, the body is formed with a mounting groove for accommodating the card tray assembly, and the body is also formed with a boss adjacent to the mounting groove, and the mounting protrusion includes a first protrusion, and the first protrusion is protruded from the surface of the boss.

[0025] In the present solution, the mounting groove can limit the card tray assembly disposed therein along the second direction and the third direction to prevent the card tray assembly from moving along the second direction and the third direction, thereby improving the connection stability of the card tray assembly on the middle frame and the structural stability of the mobile terminal. The first protrusion is protruding from the surface of the boss, which can facilitate the connection between the bracket and the first protrusion and can avoid interference between the connection structure between the bracket and the middle frame and the card tray assembly.

[0026] In one possible design, the main body also includes a connecting surface, which is formed on a side of the boss adjacent to the mounting groove, and the mounting protrusion also includes a second protrusion, which is formed on the connecting surface, extends along a third direction, and at least a portion of the second protrusion extends above the mounting groove.

[0027] In this solution, the second protrusion extends along the third direction on the connecting surface, which can reduce the space occupied by the second protrusion, improve the utilization rate of the installation space on the middle frame, and shorten the length of the bracket along the third direction, thereby further reducing the volume and occupied space of the bracket to meet the design requirements of a lighter and thinner mobile terminal.

[0028] In a possible design, the mounting protrusion further includes a limiting protrusion, which is formed at an end of the first protrusion away from the mounting groove, and the limiting protrusion can abut against the bracket.

[0029] In this solution, when the bracket is installed on the middle frame, the limiting protrusion can limit the displacement of the bracket along the third direction, improve the structural stability of the mobile terminal, ensure that the relative positions of the middle frame, the card tray assembly and the bracket remain stable and do not interfere with each other, thereby ensuring the functional reliability of each structural part.

[0030] In a possible design, the bracket also includes an avoidance groove, and along the second direction, the avoidance groove at least passes through one side of the limiting portion, and the card tray assembly includes a card tray, a rotating member and a positioning column, and the rotating member can rotate around the center of the positioning column to push the card tray out of the middle frame, and the avoidance groove is arranged corresponding to the positioning column.

[0031] In this solution, the avoidance groove on the limiting part can expose the positioning column so as not to interfere with the rotation of the positioning column, so that the rotating part can rotate around the positioning column, and can also rotate around the center of the positioning column together with the positioning column, thereby ensuring the smoothness of the rotation of the rotating part, preventing the rotation of the rotating part from getting stuck and other problems that make the tray unable to be pushed out, and ensuring its reliable function.

[0032] In a possible design, the mobile terminal further includes an adhesive layer, and at least a portion of the adhesive layer is disposed between the limiting portion and the card tray assembly.

[0033] In this solution, the adhesive layer can reduce the risk of displacement of the bracket relative to the card tray assembly, ensure the reliability of the relative position between the bracket and the card tray assembly, avoid the bracket from interfering with the movable parts of the card tray assembly, and improve the reliability of its function. The setting of the adhesive layer can buffer the compressive stress of the bracket's limit part on the card tray assembly, thereby avoiding deformation of the card tray assembly. The adhesive layer can also prevent the metal bracket from directly contacting the card tray assembly to generate electromagnetic interference, thereby improving the overall performance of the mobile terminal.

[0034] In one possible design, the mobile terminal also includes a circuit board bracket and a circuit board, the circuit board is fixed between the circuit board bracket and the body, the card tray assembly also includes a card holder, the card holder includes a seat body and a connector connected to the seat body, the seat body is bonded and fixed to the body, and at least a portion of the connector is located between the circuit board and the circuit board bracket.

[0035] In this solution, the seat is bonded and fixed to the main body, which can improve the connection stability between the card tray assembly and the middle frame. At the same time, the circuit board bracket can press the connector of the card seat against the circuit board, thereby ensuring the connection reliability between the connector and the circuit board, thereby improving the reliability of the mobile terminal's smart card reading function.

[0036] It should be understood that the foregoing general description and the following detailed description are exemplary only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a schematic diagram of a part of the structure of an electronic device in an embodiment of the prior art;

[0038] Figure 2It is a partial structural schematic diagram of another embodiment of an electronic device in the prior art;

[0039] Figure 3 It is a partial structural schematic diagram of another embodiment of an electronic device in the prior art;

[0040] Figure 4 A schematic diagram of the structure of a mobile terminal provided by an embodiment of the present application;

[0041] Figure 5 A schematic diagram of the structure of a mobile terminal provided in another embodiment of the present application;

[0042] Figure 6 A schematic diagram of partial structural decomposition of a mobile terminal provided by the present application in a specific embodiment;

[0043] Figure 7 for Figure 6 Schematic diagram of the assembly structure of the mobile terminal;

[0044] Figure 8 for Figure 7 A partial enlarged view of point B in the middle;

[0045] Fig. 9 for Figure 6 Schematic diagram of the structure of the middle bracket;

[0046] Fig.10 for Figure 6 A schematic diagram of a part of the structure of the middle frame and the bracket of the mobile terminal;

[0047] Fig.11 for Fig.10 A cross-sectional view of the mobile terminal along the CC direction;

[0048] Fig.12 for Figure 6 A schematic diagram of a part of the structure of a mobile terminal;

[0049] Fig.13 for Fig. 9 A schematic diagram of the structure of the middle bracket from another viewing angle;

[0050] Fig.14 for Figure 6 A partial enlarged view of the middle A;

[0051] Fig.15 for Fig.11 A schematic diagram of the structure of the mobile terminal in another viewing angle;

[0052] Fig.16 for Fig.15 A partial enlarged view of point D in the middle;

[0053] Fig.17 for Figure 6 Schematic diagram of the exploded view of the middle tray assembly;

[0054] Fig.18 for Figure 6 A schematic diagram of a part of the structure of the mobile terminal, wherein the card tray is in an inserted state;

[0055] Fig.19 for Fig.18 A partial enlarged view of point E in the middle;

[0056] Fig. 20 for Figure 6 A schematic diagram of a part of the structure of a mobile terminal, wherein the card tray is in an ejected state;

[0057] Fig.21 for Fig. 20 A partial enlarged view of point F in the middle;

[0058] Fig. 22 for Figure 6 A schematic diagram of a part of the structure of a mobile terminal;

[0059] Fig.23 for Figure 6 A schematic diagram of the structure of the middle frame, wherein a backing adhesive layer and glue spots are provided on the middle frame;

[0060] Fig.24 for Fig.23 A partial enlarged view of point G in the middle.

[0061] Reference numerals:

[0062] 1'-middle frame;

[0063] 15'-rotation axis area;

[0064] 16'-screw hole;

[0065] 2'-cathodic component;

[0066] 1”-Middle frame;

[0067] 17”-card slot;

[0068] 3”-Bracket;

[0069] 31”- snap-on protrusion;

[0070] 1-Middle frame;

[0071] 11-Ontology;

[0072] 111-butting platform;

[0073] 112-installation slot;

[0074] 113- boss;

[0075] 114-connection surface;

[0076] 12- border;

[0077] 121-opening;

[0078] 13-installation protrusion;

[0079] 131- first protrusion;

[0080] 131a-depression;

[0081] 132- second protrusion;

[0082] 133-limiting protrusion;

[0083] 14- Fence Department;

[0084] 15- shaft area;

[0085] 2- Card tray assembly;

[0086] 21-upper connecting portion;

[0087] 22-lower connecting part;

[0088] 23-Cato;

[0089] 24-seat;

[0090] 241-Body;

[0091] 242-connector;

[0092] 25-rotating member;

[0093] 26- positioning column;

[0094] 27- driving member;

[0095] 28- elastic switch;

[0096] 29-switch activity slot;

[0097] 3- Bracket;

[0098] 31-frame;

[0099] 311-groove;

[0100] 312-supporting part;

[0101] 313-first bending portion;

[0102] 313a-first bending edge;

[0103] 313b- second bending edge;

[0104] 314- second bending portion;

[0105] 315-Gap;

[0106] 32-limiting part;

[0107] 33-butt part;

[0108] 331-Folded edge;

[0109] 34-Avoidance slot;

[0110] 4- glue layer;

[0111] 5-Circuit board bracket;

[0112] 6- Circuit board;

[0113] 61-Substrate

[0114] 62 Electronic devices

[0115] 7a-adhesive layer;

[0116] 7b-Glue dispensing;

[0117] 8-Card pin;

[0118] 9a-rotating shaft;

[0119] 9b-display screen;

[0120] Z-first direction;

[0121] Y-second direction;

[0122] X-third direction.

[0123] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application. DETAILED DESCRIPTION

[0124] First, the related technology is explained: In the existing mobile terminal, it usually includes a middle frame, a card tray assembly and a bracket, such as Figure 1As shown, the card tray assembly 2' is usually fixed to the middle frame 1' by adhesive bonding, and is pressed against the top of the card tray assembly 2' by an integrated bracket to limit the thickness direction. However, in order to improve the fixing effect of the bracket and the card tray assembly 2' on the middle frame and the structural stability of the mobile terminal, the bracket and the card tray assembly 2' usually need to be locked on the middle frame 1' by screws. If it is used in a foldable mobile terminal, since the card tray assembly 2' is generally arranged near the hinge area 15' of the middle frame 1', it is necessary to open a screw hole 16' near the hinge area 15' so that the bracket and the card tray assembly 2' can be screwed to the middle frame 1'. Therefore, the waterproof performance of the hinge area 15' of the middle frame 1' will be destroyed, and the overall strength of the middle frame 1' will be reduced. In addition, the connection between the screws, the bracket, and the card tray assembly will also take up more space in the thickness direction.

[0125] In other designs, such as Figure 2 As shown, by providing a snap-in groove 17'' on the side wall of the middle frame 1'', and providing a snap-in protrusion 31'' on the bracket 3'', the bracket 3'' and the middle frame 1'' are snap-fitted and fixed through the snap-in protrusion 31'' and the snap-in groove 17'', so that the bracket 3'' can press the card tray assembly onto the middle frame 1''. However, the snap-in groove 17'' with sufficient snap-in space on the side wall of the middle frame 1'' needs to occupy more space in the thickness direction of the middle frame 1'', which cannot meet the demand for thin and light mobile terminals. For some thinner mobile terminals, this solution cannot be implemented due to space limitations in the thickness direction. In order to avoid electromagnetic interference, the bracket 3'' usually supported by metal materials cannot directly contact the card tray assembly, and it is also necessary to add an insulating adhesive layer and other structures between the bracket 3'' and the card tray assembly, which will further increase the thickness of the mobile terminal. Or, as Figure 3 As shown, the bracket 3" is made of plastic material, but in order to ensure the strength of the bracket 3", the thickness of the bracket 3" will be thicker than that of the metal bracket. Similarly, this makes the bracket 3" and the middle frame 1" snap-fitting together require more space in the thickness direction of the entire machine.

[0126] In order to solve the above technical problems, the embodiment of the present application provides a mobile terminal, which includes electronic devices such as mobile phones, tablet computers, personal digital assistants (PDAs), laptop computers, car computers, foldable display devices, foldable display screens, wearable devices, etc. The embodiment of the present application does not impose any special restrictions on the specific form of the above mobile terminals. For the convenience of explanation, the following is a mobile terminal as an example. Figure 4 and Figure 5 The description is made by taking the foldable mobile terminal shown as an example, and the mobile terminal of the present application is introduced with specific embodiments below.

[0127] like Figure 4 and Figure 5 As shown, Figure 4 A schematic diagram of a mobile terminal provided by an embodiment of the present application, wherein the mobile terminal is in a folded state. Figure 5 This is a structural diagram of a mobile terminal provided in another embodiment of the present application, wherein the mobile terminal is in an unfolded state. The mobile terminal comprises a middle frame 1, a rotating shaft 9a and a display screen 9b. The mobile terminal in this embodiment comprises two middle frames 1 that are relatively rotatable, the rotating shaft 9a is rotatably connected between the two middle frames 1, and the display screen 9b is mounted on the middle frame 1. When the two middle frames 1 rotate relative to the rotating shaft 9a and approach each other, the display screen 9b can be driven to fold, so that the mobile terminal is in a state as shown in FIG. Figure 4 When the two middle frames 1 rotate relative to the rotation axis 9a and separate from each other, the display screen 9b can be unfolded to make the mobile terminal in the folded state as shown. Figure 5 The unfolded state shown in the figure makes the display screen 9b have a larger display area for user operation and viewing. In this embodiment, the display screen 9b adopts a flexible display screen, for example, an organic light-emitting diode (OLED) display screen, an active-matrix organic light-emitting diode or an active-matrix organic light-emitting diode (AMOLED) display screen, a mini organic light-emitting diode (MIL-OLED) display screen, a micro organic light-emitting diode (MIL-LED) display screen, a micro organic light-emitting diode (MIL-LED) display screen, and a quantum dot light-emitting diode (QLED) display screen.

[0128] Please refer to Figure 6 , Figure 6 This is a partial structural decomposition diagram of a mobile terminal provided by the present application in a specific embodiment. Further, Figure 6 The middle frame 1 shown in FIG. 1 may be only Figure 5 The middle frame 1 located on one side of the rotating shaft 9a in the mobile terminal shown in FIG.

[0129] like Figure 6As shown, the mobile terminal may include a middle frame 1, a card tray assembly 2, a bracket 3, etc. The middle frame 1 includes a body 11 and a frame 12, the frame 12 is arranged around the edge of the body 11, the card tray assembly 2 is fixed to the body 11, and at least part of the card tray assembly 2 is penetrated through the frame 12, the bracket 3 is fixed to the body 11, and the bracket 3 includes a frame 31 and a limiting portion 32 formed on the frame 31. Among them, an opening 121 may be provided on the frame 12, and at least part of the card tray assembly 2 is penetrated through the frame 12 through the opening 121, so as to facilitate the insertion or removal of smart cards such as SIM cards, SD cards and TF cards.

[0130] Please refer to Figure 7 , Figure 7 6 is a schematic diagram of the assembly structure of the mobile terminal. Figure 7 As shown, along the first direction Z, at least a portion of the tray assembly 2 is located between the limiting portion 32 and the body 11 .

[0131] Please refer to Figure 8 , Figure 8 for Figure 7 A partial enlarged view of point B in the figure. Figure 8 As shown, the bracket 3 can limit the card tray assembly 2 along the first direction Z through the limiting portion 32. At the same time, the frame 12 can provide a certain limit for the card tray assembly 2 in the first direction Z, thereby improving the fixing effect of the card tray assembly 2 on the middle frame 1. In addition, the bracket 3 is directly fixed to the body 11 of the middle frame 1 through the frame body 31, which reduces the opening of the screw holes on the middle frame 1, can reduce the impact on the strength of the middle frame, improve the structural stability of the mobile terminal, and can also reduce the difficulty of waterproofing the whole machine and improve the waterproof performance of the whole machine. In particular, when the card tray assembly 2 is arranged on a foldable mobile terminal near the hinge area 15 of the middle frame 1, the screw hole opening in the hinge area 15 can be reduced, thereby reducing the difficulty of waterproofing the hinge area and improving the waterproof performance of the whole machine. In addition, the bracket 3 in the mobile terminal of the embodiment of the present application has a simple structure, is easy to prepare, has low cost, is easy to assemble, and can improve assembly efficiency. The bracket 3 is small in size, which can reduce the interference between the bracket 3 and the card tray assembly 2, and can also reduce the space occupied by the card tray assembly 2 and the bracket 3 in the first direction Z when they are installed on the middle frame 1, so that the thickness of the mobile terminal in the first direction Z is thinner, thereby meeting the design requirements of a thinner mobile terminal.

[0132] In a specific embodiment, Figure 8 As shown, along the second direction Y, the bracket 3 is disposed on a side of the card tray assembly 2 away from the frame 12. Further, the stopper 32 of the bracket 3 extends in the second direction Y along the edge of the bracket body 31.

[0133] In this embodiment, Figure 8As shown, the bracket 3 and the frame 12 of the middle frame 1 can respectively limit the positions of the two ends of the card tray assembly 2 along the first direction Z along the second direction Y, thereby improving the fixing effect of the card tray assembly 2 on the middle frame 1, and can also make the force on the two ends of the card tray assembly 2 along the second direction Y more uniform, thereby preventing the risk of warping of the card tray assembly 2, and improving the structural stability of the card tray assembly 2 fixed on the middle frame 1, thereby reducing the resistance when the smart card is inserted or removed, and facilitating the insertion or removal of the smart card.

[0134] For further information, see Fig. 9 , Fig. 9 for Figure 6 The schematic diagram of the structure of the middle bracket 3. Fig. 9 As shown, along the second direction Y, the width of the limit portion 32 is d, d ≥ 0.3 mm. For example, d can be 0.3 mm, 0.35 mm, 0.4 mm, 0.45 mm, 0.5 mm, etc. The specific value of d can also be specifically set according to the specific cooperation between the bracket 3 and the tray assembly 2, and is not limited here.

[0135] If the width d of the limiting portion 32 is too small, for example, d<0.3mm, the limiting portion 32 is too short and the overlapping area with the card tray assembly 2 in the first direction Z is small, so the limiting effect of the card tray assembly 2 in the first direction Z is poor and the structural stability of the mobile terminal is not high.

[0136] In this embodiment, Fig. 9 As shown, the width d of the limiting portion 32 satisfies d ≥ 0.3 mm, so that the overlapping area between the limiting portion 32 and the card tray assembly 2 in the first direction Z is larger, reducing the influence of the fitting clearance and error on the fitting between the card tray assembly 2 and the limiting portion 32 of the bracket 3, so that the limiting portion 32 of the bracket 3 can stably limit the card tray assembly 2 in the first direction Z, preventing the card tray assembly 2 from shifting or deforming during use, and improving the structural stability of the card tray assembly 2 and the mobile terminal.

[0137] See also Fig.10 and Fig.11 , Fig.10 for Figure 6 A schematic diagram of a part of the structure of the mobile terminal in which the middle frame 1 and the bracket 3 are installed in cooperation, Fig.11 for Fig.10 A cross-sectional view of the mobile terminal along the CC direction. Fig.11 As shown, the middle frame 1 further includes a mounting protrusion 13 , which is formed protruding from the body 11 , and the frame 31 is provided with a groove 311 , which is engaged with the mounting protrusion 13 .

[0138] In this embodiment, Fig.11As shown, when the bracket 3 is assembled with the middle frame 1, it is only necessary to align the groove 311 on the bracket 3 with the installation protrusion 13 on the middle frame 1 and press it so that the bracket 3 is embedded and connected with the installation protrusion 13 of the middle frame 1 through the groove 311 on the frame body 31. The structure is simple, the connection is reliable, and it is easy to assemble, which can improve the assembly efficiency of the mobile terminal and save costs. In addition, the bracket 3 occupies a small space on the middle frame 1, which improves the utilization rate of the installation space on the middle frame 1 and is beneficial to the integrated design of the mobile terminal.

[0139] Of course, the bracket 3 can also be directly connected to the middle frame 1 by means of snap connection, screw connection, etc., which is not limited here.

[0140] Furthermore, if Fig.11 As shown, the frame 31 includes a supporting portion 312, a first bending portion 313 and a second bending portion 314. Along the second direction Y, the first bending portion 313 and the second bending portion 314 are respectively arranged at both ends of the supporting portion 312. The first bending portion 313 and the second bending portion 314 are bent along the edge of the supporting portion 312 toward a side close to the main body 11. The first bending portion 313, the second bending portion 314 and the supporting portion 312 are surrounded to form a groove 311.

[0141] In this embodiment, Fig.11 As shown, the structure of the bracket 3 can be more flexible, so that the bracket 3 can adjust the opening size of the groove 311 according to the width of the snap-fit ​​protrusion 13 of the middle frame 1 along the second direction 3 by adjusting the first bending portion 313 and the second bending portion 314, thereby facilitating the embedding of the bracket 3 and the middle frame 1, thereby reducing the assembly difficulty of the mobile terminal and further improving the assembly efficiency. In addition, in this structure, the groove 311 does not need to be prepared by using special groove-making equipment, which saves preparation costs and improves the preparation efficiency of the bracket 3.

[0142] In another specific embodiment, a groove 311 can be formed on the frame body 31 of the bracket 3 by a device, thereby reducing the step of bending the first bending portion 313 and the second bending portion 314 relative to each other, simplifying the preparation process. Of course, the groove 311 can also be formed by other methods, which are not limited here.

[0143] Please refer to Fig.12 , Fig.12 for Figure 6 Schematic diagram of part of the structure of the mobile terminal.

[0144] In a specific embodiment, Fig.12 As shown, the second bending portion 314 is provided with a plurality of notches 315 , the card tray assembly 2 includes an elastic switch 28 and a switch movable slot 29 , at least part of the elastic switch 28 is movably arranged in the switch movable slot 29 , and at least one notch 315 is arranged corresponding to the switch movable slot 29 .

[0145] The elastic switch 28 can contact the card tray 23 when the card tray 23 of the card tray assembly 2 is inserted, so that the detection element in the mobile terminal is turned on, thereby being able to detect whether the card tray 23 is inserted.

[0146] In this embodiment, Fig.12 As shown, at least one notch 315 corresponds to the switch movable groove 29 on the card tray assembly 2, so as to avoid interference between the bracket 3 and the elastic switch 28, so as to ensure that the elastic switch 28 has sufficient movable space and functional reliability. In addition, the setting of the notch 315 can also reduce the interference between the bracket 3 and other components on the middle frame 1 after being installed on the middle frame 1, so as to improve the functional reliability of other components, and can also reduce the material usage and weight of the bracket 3 while ensuring the overall strength of the bracket 3, thereby further saving costs and reducing the weight of the mobile terminal, which is conducive to the lightweight design requirements of the mobile terminal. In addition, the setting of multiple notches 315 allows the second bending portion 314 to easily produce a certain amount of slight deformation, increase the opening of the groove 311, thereby further reducing the difficulty of installing the bracket 3 during assembly and improving assembly efficiency.

[0147] Please refer to Fig.13 , Fig.13 for Fig. 9 Schematic diagram of the structure of the middle bracket from another perspective.

[0148] In a specific embodiment, Fig.13 As shown, the first bending portion 313 includes a first bending edge 313 a and a second bending edge 313 b . Along the third direction X, the first bending edge 313 a and the second bending edge 313 b are located at two sides of the limiting portion 32 .

[0149] In this embodiment, Figure 8 , Fig.11 , Fig.12 and Fig.13As shown, along the third direction X, the first bent portion 313 is reliably connected to the mounting protrusion 13, the bent edge 313a and the second bent edge 313b are arranged on both sides of the limiting portion 32, and the force of the bracket 3 along the third direction X is uniform, which can prevent the bracket 3 from warping on both sides along the third direction X or the bracket 3 from detaching from the mounting protrusion 13, so that the mobile terminal has a higher structural stability. It can also reduce the risk of interference between the first bent portion 313 and the card tray assembly 2, prevent the first bent portion 313 and the card tray assembly 2 from colliding or scratching during the assembly process, further reduce the difficulty of assembling the bracket 3, and improve the assembly efficiency of the mobile terminal. In addition, the first bent edge 313a and the second bent edge 313b are arranged on both sides of the limiting portion 32, so that the connection between the limiting portion 32 and the supporting portion 312 of the frame body 31 can form a plane, so that the limiting portion 32 and the supporting portion 312 can jointly limit the card tray assembly 2 along the first direction Z, thereby improving the limiting effect of the bracket 3 on the card tray assembly 2, and can also reduce the width design requirement of the width d of the limiting portion 32 along the second direction Y, so as to further reduce the volume of the bracket 3, reduce the space occupied by the bracket 3, and meet the design requirements of a lighter and thinner mobile terminal.

[0150] In another specific embodiment, the first bending portion 313 may also be a whole bending edge extending along the third direction X to further improve the connection strength between the bracket 3 and the mounting protrusion 13. Of course, according to the design requirements of the mobile terminal, the first bending portion 313 may also be designed in other ways, such as being designed as multiple, etc., which is not limited here.

[0151] In a specific embodiment, Fig.11 and Fig.13 As shown, the bracket 3 further includes an abutting portion 33 , which is folded outward along the edge of the second bending portion 314 . The body 11 is convexly provided with an abutting platform 111 , and the abutting portion 33 abuts against the abutting platform 111 .

[0152] In this embodiment, Fig.11 and Fig.13 As shown, after the bracket 3 is installed on the middle frame 1, the abutment portion 33 can abut against the abutment platform 111, thereby preventing the bracket 3 from rotating in a direction away from the card tray assembly 2, thereby avoiding excessive gap between the limiting portion 32 and the card tray assembly 2, reducing the limiting effect of the limiting portion 32 on the card tray assembly 2, improving the installation stability of the bracket 3 on the middle frame 1, and ensuring the limiting reliability of the limiting portion 32 on the card tray assembly 2.

[0153] Furthermore, if Fig.11 and Fig.13 As shown, the abutting portion 33 has an outwardly disposed folded edge 331 , and the abutting portion 33 abuts against the abutting platform 111 via the folded edge 331 .

[0154] In this embodiment, Fig.11 and Fig.13 As shown, the setting of the overlapped edge 331 can reduce the roughness of the outer edge of the abutment portion 33 away from the second bending portion 314, prevent burrs and other processing residues from scratching the middle frame 1 or scratching the assembly workers, etc., and improve the smoothness of the outer edge of the abutment portion 33. In addition, the structure is easy to process and has low cost. At the same time, it can also increase the thickness of the abutment portion 33, so that the abutment portion 33 is not easily deformed when abutting against the abutment platform 111, thereby improving the structural stability of the bracket 3.

[0155] In another specific embodiment, the bracket 3 may not be provided with the abutting portion 33 , so that the second bent portion 314 directly abuts against the abutting platform 111 , so as to further reduce the volume and occupied space of the bracket 3 .

[0156] Please refer to Fig.14 , Fig.14 for Figure 6 A partial enlarged view of point A in the middle.

[0157] In a specific embodiment, Fig.14 As shown, the middle frame 1 further includes a fence portion 14 protruding from the surface of the body 11 , the fence portion 14 and the mounting protrusion 13 are spaced apart along the second direction Y, and at least a portion of the abutment platform 111 is located between the mounting protrusion 13 and the fence portion 14 .

[0158] In this embodiment, Fig.11 and Fig.14 As shown, the overlapping part of the fence portion 14, the abutment platform 111 and the mounting protrusion 13 projected along the second direction Y can form a U-shaped groove on the middle frame 1. When the bracket 3 is installed on the middle frame 1, the abutment portion 33 can extend along the U-shaped groove to provide a guide for the installation of the bracket 3, so that when the abutment portion 33 abuts the abutment platform 111, the through groove 311 on the frame body 31 can be matched and engaged with the mounting protrusion 13, further reducing the installation difficulty of the bracket 3 and improving the assembly efficiency. The abutment portion 33 and the second bent portion 314 are in the U-shaped groove formed by the fence portion 14, the abutment platform 111 and the mounting protrusion 13, which can further improve the connection strength between the bracket 3 and the middle frame 1 and prevent the bracket 3 from detaching from the middle frame 1 along the first direction Z.

[0159] Please refer to Fig.15 and Fig.16 , Fig.15 for Fig.11 A schematic diagram of the structure of the mobile terminal in another perspective, Fig.16 for Fig.15 A partial enlarged view of point D in the middle.

[0160] In a specific embodiment, Fig.14 and Fig.16As shown, the body 11 is formed with a mounting groove 112 for accommodating the card tray assembly 2 , and the body 11 is also formed with a boss 113 adjacent to the mounting groove 112 . The mounting protrusion 13 includes a first protrusion 131 , and the first protrusion 131 is protruded from the surface of the boss 113 .

[0161] In this embodiment, Fig.14 As shown, the mounting groove 112 can limit the card tray assembly 2 disposed therein along the second direction Y and the third direction X, thereby preventing the card tray assembly 2 from moving along the second direction Y and the third direction X, thereby improving the connection stability of the card tray assembly 2 on the middle frame 1 and the structural stability of the mobile terminal. The first protrusion 131 is protruded from the surface of the boss 113, which can facilitate the connection between the bracket 3 and the first protrusion 131, and can avoid interference between the connection structure between the bracket 3 and the middle frame 1 and the card tray assembly 2.

[0162] In a specific embodiment, Fig.14 and Fig.16 As shown, the main body 11 also includes a connecting surface 114, which is formed on one side of the boss 113 adjacent to the mounting groove 112, and the mounting protrusion 13 also includes a second protrusion 132, which is formed on the connecting surface 114, and the second protrusion 132 extends along the third direction X, and at least a portion of the second protrusion 132 extends above the mounting groove 112.

[0163] In this embodiment, Fig.14 and Fig.16 As shown, the second protrusion 132 extends along the third direction X on the connecting surface 114, which can reduce the space occupied by the second protrusion 132, improve the utilization rate of the installation space on the middle frame 1, and shorten the length of the bracket 3 along the third direction X, thereby further reducing the volume and occupied space of the bracket 3 to meet the design requirements of a lighter and thinner mobile terminal.

[0164] Among them, since the second protrusion 132 is formed on the connecting surface 114, when the bracket 3 is engaged with the second protrusion 132, the connecting surface 114 can also limit the bracket 3 along the third direction X, thereby preventing the bracket 3 from moving along the third direction, improving the connection stability of the bracket 3 on the middle frame 1, and there is no need to set up corresponding limiting components, further reducing the structural complexity of the mobile terminal.

[0165] It should be noted that the mounting protrusion 13 may be composed of only the first protrusion 131 or only the second protrusion 132 . Of course, it may also be composed of both the first protrusion 131 and the second protrusion 132 , which is not limited here.

[0166] like Fig.14 and Fig.16In the specific embodiment shown, the mounting protrusion 13 is composed of a first protrusion 131 and a second protrusion 132 respectively formed on the bosses 113 on both sides of the mounting groove 112 along the third direction X. When the bracket 3 is engaged with the middle frame 1, the groove 311 formed by the first bent edge 313a, the support portion 312, and the second bent portion 314 is engaged with the first protrusion 131, and the groove 311 formed by the second bent edge 313b, the support portion 312, and the second bent portion 314 is engaged with the second protrusion 132, so that the bracket 3 can be stably engaged with the middle frame 1, thereby improving the connection stability of the bracket 3 and the middle frame 1.

[0167] Furthermore, if Fig.14 and Fig.16 As shown, the mounting protrusion 13 further includes a limiting protrusion 133 . The limiting protrusion 133 is formed at one end of the first protrusion 131 away from the mounting groove 112 . The limiting protrusion 133 can abut against the bracket 3 .

[0168] In this embodiment, Fig.14 and Fig.16 As shown, when the bracket 3 is installed on the middle frame 1, the limiting protrusion 133 can limit the displacement of the bracket 3 along the third direction X, improve the structural stability of the mobile terminal, and ensure that the relative positions of the middle frame 1, the card tray assembly 2 and the bracket 3 remain stable without other interference with each other, thereby ensuring the functional reliability of each structural part.

[0169] Furthermore, if Fig.16 As shown, a recessed portion 131a may also be provided on the mounting protrusion 13, and the recessed portion 131a is formed on both sides of the mounting protrusion 13 along the second direction Y, so that it can be easily engaged with the groove 311 on the bracket 3, and can play a certain limiting role in the displacement of the bracket 3 along the first direction Z and the third direction X, further improving the connection stability between the bracket 3 and the middle frame 1.

[0170] Please refer to Figures 17 to 21 , Fig.17 for Figure 6 Schematic diagram of the exploded view of the middle tray assembly 2. Fig.18 for Figure 6 A partial structural diagram of a mobile terminal, wherein the card tray 23 is in an inserted state, Fig.19 for Fig.18 A partial enlarged view of point E in the middle. Fig. 20 for Figure 6 A partial structural diagram of a mobile terminal, wherein the card tray 23 is in an ejected state, Fig.21 for Fig. 20 A partial enlarged view of point F in the middle.

[0171] like Fig.17 , Fig.19 and Fig.21As shown, the card tray assembly 2 includes a card tray 23, a rotating member 25 and a positioning column 26, and the rotating member 25 can rotate around the center of the positioning column 26 to push the card tray 23 out of the middle frame 1. The bracket 3 also includes an avoidance groove 34, along the second direction Y, the avoidance groove 34 at least penetrates one side of the limiting portion 32, and the avoidance groove 34 is correspondingly arranged with the positioning column 26.

[0172] like Fig.17 As shown, the card tray assembly 2 includes an upper connecting portion 21 and a lower connecting portion 22, a card tray 23, a rotating member 25 and a positioning column 26. The card tray 23 can carry a smart card and pass through the interval between the upper connecting portion 21 and the lower connecting portion 22. The positioning column 26 can pass through the upper connecting portion 21 and the lower connecting portion 22 to be fixed, so that the rotating member 25 is located between the upper connecting portion 21 and the lower connecting portion 22. Fig.19 As shown, when the card tray 23 is inserted between the upper connecting portion 21 and the lower connecting portion 22, the rotating member 25 can be pushed to rotate around the center of the positioning column 26 to provide sufficient installation space for the card tray 23 so that the card tray 23 is in the inserted state. Fig.21 As shown, when the card tray 23 needs to be removed, the rotating member 25 can be driven to rotate around the center of the positioning column 26, so that the rotating member 25 pushes the card tray 23 to extend from between the upper connecting part 21 and the lower connecting part 22, so that the card tray 23 is in a pushed-out state, so that the user can take out the card tray 23 for the next step.

[0173] like Fig.19 and Fig.21 As shown, the bracket 3 further includes an avoidance groove 34 . Along the second direction Y, the avoidance groove 34 at least penetrates one side of the limiting portion 32 . The avoidance groove 34 is disposed corresponding to the positioning column 26 .

[0174] In this embodiment, Fig.19 and Fig.21 As shown, the avoidance groove 34 on the limiting portion 32 can expose the positioning column 26, so as not to interfere with the rotation of the positioning column 26, so that the rotating member 25 can rotate around the positioning column 26, and can also rotate around the center of the positioning column 26 together with the positioning column 26, thereby ensuring the smoothness of the rotation of the rotating member 25, preventing the rotation of the rotating member 25 from getting stuck and other problems that make the tray 23 unable to be pushed out, and ensuring its reliable function.

[0175] Among them, Fig.17 , Fig.19 and Fig.21 As shown, the card tray assembly 2 may further include a driving member 27 connected to the rotating member 25. When the card tray 23 needs to be removed, the user can push the driving member 27 through the card needle 8, and the driving member 27 drives the rotating member 25 to rotate, so that the rotating member 25 pushes the card tray 23 to extend out of the opening 121 on the frame 12, thereby completing the operation of removing the card tray 23.

[0176] In a specific embodiment, the bracket 3 may be an integrally formed structure to improve the structural stability and overall strength of the bracket 3 , and to facilitate mass production of the bracket 3 and save costs.

[0177] Furthermore, the bracket 3 can be made of metal material, so as to ensure that the bracket 3 has high strength while reducing the thickness of the bracket 3, thereby further reducing the space occupied by the bracket 3 in the first direction Z to meet the design requirements of a lighter and thinner mobile terminal.

[0178] Furthermore, if Figure 6 As shown, the mobile terminal further includes an adhesive layer 4 , at least a portion of which is disposed between the limiting portion 32 and the card tray assembly 2 .

[0179] In this embodiment, Figure 6 As shown, the adhesive layer 4 can reduce the risk of the bracket 3 being displaced relative to the card tray assembly 2, ensure the reliability of the relative position between the bracket 3 and the card tray assembly 2, so as to avoid the bracket 3 interfering with the parts of the card tray assembly 2 that need to move, and improve the reliability of its function. The setting of the adhesive layer 4 can buffer the compressive stress of the limit part 32 of the bracket 3 on the card tray assembly 2, thereby avoiding deformation of the card tray assembly 2. The adhesive layer 4 can also prevent the metal bracket 3 from directly contacting the card tray assembly 2 to generate electromagnetic interference, thereby improving the overall performance of the mobile terminal.

[0180] The adhesive layer 4 may be disposed corresponding to the limiting portion 32 , which is not limited here.

[0181] In another embodiment, the bracket 3 may also be made of a polymer material such as plastic to avoid electromagnetic interference caused by contact between the bracket 3 and the tray assembly 2, which is not limited here.

[0182] Please refer to Fig. 22 , Fig. 22 6 is a partial structural diagram of a mobile terminal of an electronic device.

[0183] In a specific embodiment, Fig. 22 As shown, the mobile terminal further includes a circuit board bracket 5 and a circuit board 6, the circuit board 6 is fixed between the circuit board bracket 5 and the body 11, the card tray assembly 2 further includes a card holder 24, the card holder 24 includes a seat body 241 and a connector 242 connected to the seat body 241, the seat body 241 is bonded and fixed to the body 11, and at least part of the connector 242 is located between the circuit board 6 and the circuit board bracket 5. Fig.17 As shown, the upper connecting portion 21 and the lower connecting portion 22 of the card tray assembly 2 are connected to the seat body 241 of the card seat 24. When the card tray 23 carries the smart card in a position as shown in FIG. Fig.19In the inserted state shown, the connector 242 of the card holder 24 can be electrically connected to the circuit board so that the mobile terminal can read the content in the smart card. The connector 242 can be a flexible printed circuit (FPC) or other connectors, which are not limited here.

[0184] In this embodiment, Fig. 22 As shown, the seat 241 is bonded and fixed to the main body 11, which can improve the connection stability between the card tray assembly 2 and the middle frame 1. At the same time, the circuit board bracket 5 can press the connector 242 of the card seat 24 against the circuit board 6, thereby ensuring the connection reliability between the connector 242 and the circuit board 6, thereby improving the reliability of the mobile terminal's smart card reading function.

[0185] Among them, Figure 4 As shown, the circuit board 6 includes a substrate 61 and an electronic device 62 arranged on the substrate 61. At least a portion of the circuit board bracket 5 can be shielded above the electronic device 62 and connected to the substrate 61 by screws to protect the electronic device 62.

[0186] For further information, please refer to Fig.23 and Fig.24 , Fig.23 for Figure 6 The schematic diagram of the structure of the middle frame 1, wherein the middle frame 1 is provided with a backing adhesive layer and glue. Fig.24 for Fig.23 A partial enlarged view of point G in the middle.

[0187] like Fig.23 and Fig.24 As shown, the seat body 241 can be bonded and fixed to the middle frame 1 by means of adhesive 7a to improve the connection reliability between the card tray assembly 2 and the middle frame 1.

[0188] Going a step further, Fig.23 and Fig.24 As shown, in order to further improve the connection reliability between the card tray assembly 2 and the middle frame 1 , glue 7 b may be provided on the bottom surface of the seat body 241 or on the middle frame 1 .

[0189] Among them, the embodiment of the present application does not limit the shape of the back glue 7a or the glue 7b, as long as the connection between the card tray assembly 2 and the middle frame 1 can be guaranteed to be reliable, no limitation is made here.

[0190] Those skilled in the art will appreciate that the structures illustrated in the embodiments of the present application do not constitute specific limitations on the mobile terminal. In other possible implementations of the present application, the mobile terminal may include more components than shown in the figure, or combine certain components, or split certain components, or arrange the components differently.

[0191] The above are only specific implementations of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A mobile terminal, characterized in that: include: A middle frame (1), the middle frame (1) comprising a body (11) and a frame (12), the frame (12) being arranged around the edge of the body (11); A card tray assembly (2), the card tray assembly (2) being fixed to the body (11), and at least a portion of the card tray assembly (2) being inserted through the frame (12); A bracket (3), wherein the bracket (3) is fixed to the body (11), and the bracket (3) comprises a frame body (31) and a limiting portion (32) formed on the frame body (31), and along a first direction (Z), at least a portion of the card tray assembly (2) is located between the limiting portion (32) and the body (11).

2. The mobile terminal according to claim 1, characterized in that: Along the second direction (Y), the bracket (3) is arranged on a side of the card tray assembly (2) away from the frame (12); The limiting portion (32) extends along the edge of the frame (31) in the second direction (Y).

3. The mobile terminal according to claim 1, characterized in that: Along the second direction (Y), the width of the limiting portion (32) is d, and d≥0.3 mm.

4. The mobile terminal according to claim 1, characterized in that: The middle frame (1) further comprises a mounting protrusion (13), wherein the mounting protrusion (13) is formed protrudingly on the body (11); The frame body (31) is provided with a groove (311), and the groove (311) is engaged with the mounting protrusion (13).

5. The mobile terminal according to claim 4, characterized in that: The frame (31) comprises a supporting portion (312), a first bending portion (313) and a second bending portion (314); along a second direction (Y), the first bending portion (313) and the second bending portion (314) are respectively arranged at two ends of the supporting portion (312); The first bending portion (313) and the second bending portion (314) are bent along the edge of the supporting portion (312) toward a side close to the main body (11); The first bending portion (313), the second bending portion (314) and the supporting portion (312) are arranged to form the groove (311).

6. The mobile terminal according to claim 5, characterized in that: The second bending portion (314) is provided with a plurality of notches (315); The card tray assembly (2) comprises an elastic switch (28) and a switch movable groove (29), and at least a portion of the elastic switch (28) is movably arranged in the switch movable groove (29); At least one of the notches (315) is arranged corresponding to the switch movable slot (29).

7. The mobile terminal according to claim 5, characterized in that: The first bending portion (313) comprises a first bending edge (313a) and a second bending edge (313b); Along the third direction (X), the first bending edge (313a) and the second bending edge (313b) are located on both sides of the limiting portion (32).

8. The mobile terminal according to claim 5, characterized in that: The bracket (3) further comprises an abutment portion (33), wherein the abutment portion (33) is folded outward along the edge of the second bent portion (314); The main body (11) is protrudingly provided with an abutment platform (111), and the abutment portion (33) abuts against the abutment platform (111).

9. The mobile terminal according to claim 8, characterized in that: The abutting portion (33) has an outwardly disposed folded edge (331), and the abutting portion (33) abuts against the abutting platform (111) via the folded edge (331).

10. The mobile terminal according to claim 8, characterized in that: The middle frame (1) further comprises a fence portion (14) protruding from the surface of the body (11), wherein the fence portion (14) and the mounting protrusion (13) are spaced apart along the second direction (Y); At least a portion of the abutment platform (111) is located between the mounting protrusion (13) and the fence portion (14).

11. The mobile terminal according to claim 5, characterized in that: The body (11) is formed with a mounting groove (112) for accommodating the card tray assembly (2), and the body (11) is also formed with a boss (113) adjacent to the mounting groove (112); The mounting protrusion (13) comprises a first protrusion (131), and the first protrusion (131) is protruding from the surface of the boss (113).

12. The mobile terminal according to claim 11, characterized in that: The body (11) further comprises a connecting surface (114), wherein the connecting surface (114) is formed on a side of the boss (113) adjacent to the mounting groove (112); The mounting protrusion (13) further includes a second protrusion (132), wherein the second protrusion (132) is formed on the connecting surface (114); The second protrusion (132) extends along a third direction (X), and at least a portion of the second protrusion (132) extends above the mounting groove (112).

13. The mobile terminal according to claim 11, characterized in that: The mounting protrusion (13) further comprises a limiting protrusion (133), wherein the limiting protrusion (133) is formed at an end of the first protrusion (131) away from the mounting groove (112); The limiting protrusion (133) can abut against the bracket (3).

14. The mobile terminal according to any one of claims 1 to 13, characterized in that: The bracket (3) further comprises an avoidance groove (34), and along the second direction (Y), the avoidance groove (34) at least penetrates one side of the limiting portion (32); The card tray assembly (2) comprises a card tray (23), a rotating member (25) and a positioning column (26); the rotating member (25) can rotate around the center of the positioning column (26) to push the card tray (23) out of the middle frame (1); The avoidance groove (34) is arranged corresponding to the positioning column (26).

15. The mobile terminal according to any one of claims 1 to 13, characterized in that: The mobile terminal further comprises an adhesive layer (4), at least a portion of which is arranged between the limiting portion (32) and the card tray assembly (2).

16. The mobile terminal according to any one of claims 1 to 13, characterized in that: The mobile terminal further comprises a circuit board bracket (5) and a circuit board (6), wherein the circuit board (6) is fixed between the circuit board bracket (5) and the body (11); The card tray assembly (2) further comprises a card seat (24), wherein the card seat (24) comprises a seat body (241) and a connector (242) connected to the seat body (241); The seat body (241) is bonded and fixed to the body (11), and at least a portion of the connector (242) is located between the circuit board (6) and the circuit board bracket (5).

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