Foldable electronic device

Abstract

The present application provides a foldable electronic device, comprising a display screen, a first magnet, a second magnet, a first housing, and a second housing rotatably connected to the first housing. The first housing comprises a first mounting recess; the first mounting recess comprises a first sub-groove and a second sub-groove, wherein the depth of the second sub-groove is greater than that of the first sub-groove; the second housing comprises a second mounting recess; the second mounting recess comprises a third sub-groove and a fourth sub-groove, wherein the depth of the third sub-groove is greater than that of the fourth sub-groove, and a boss protrudes from a groove bottom wall of the third sub-groove; the first magnet comprises a first main body and a first extension portion; the second magnet comprises a second main body and an extension body; the first magnet is mounted in the first mounting recess, the first main body is accommodated in the first sub-groove, and the first extension portion is accommodated in the second sub-groove; the second magnet is mounted in the second mounting recess, the second main body is accommodated in the third sub-groove and the fourth sub-groove, and the extension body abuts against the boss; the first housing and the second housing relatively rotate to fold the display screen; and the first magnet and the second magnet are opposite to each other and attract each other.

Description

Foldable electronic device

[0001] This application claims priority to the patent application with the application number 202410891194.2, the name of which is "Foldable electronic device", which was filed in China on July 03, 2024, the entire content of which is incorporated herein by reference. TECHNICAL FIELD

[0002] The present application relates to the technical field of communication equipment, in particular to a foldable electronic device. BACKGROUND

[0003] In the prior art, in order to meet the design of large screens, electronic devices with folding screens have become a development trend (folding electronic devices). Taking folding mobile phones as an example, a folding mobile phone generally includes two housings and a rotating shaft connecting the two housings. A flexible display screen is mounted in the two housings, and the two housings are folded and unfolded through the rotating shaft, thereby realizing the folding and unfolding of the flexible display screen. In order to prevent the mobile phone from being accidentally unfolded when folded, a magnet is generally provided on the edge of the housing to position the two housings. However, as the performance of the folding mobile phone expands, the space inside the folding mobile phone becomes increasingly cramped, making it difficult to determine the space for accommodating the magnets of the two housings.

[0004] How to accommodate magnets in the limited internal space of a folding mobile phone is a problem to be solved in the prior art. SUMMARY

[0005] The present application provides a foldable electronic device that utilizes the irregular area inside the housing of the electronic device to accommodate magnets in the limited internal space of a folding mobile phone.

[0006] The present application provides a foldable electronic device, which includes a display screen, a first magnet, a second magnet, a first housing, and a second housing connected to the first housing in rotation,

[0007] The first housing includes a first middle plate and a first bezel connected to the edge of the first middle plate, and the first housing includes a first edge region adjacent to the first bezel. The first middle plate includes a first surface and a first mounting slot recessed in the first surface and located in the edge region of the first housing. The first mounting slot includes a first sub-slot and a second sub-slot, and the first sub-slot and the second sub-slot are in communication and the extension directions thereof intersect. In the thickness direction of the first housing, the depth of the second sub-slot is greater than the depth of the first sub-slot.

[0008] The second housing comprises a second middle plate and a second frame connected to the edge of the second middle plate, and further comprises a second edge region adjacent to the second frame, the second middle plate comprises a third surface and a second mounting slot recessed in the third surface and located at the edge region of the second housing, the second mounting slot comprises a third sub-slot and a fourth sub-slot, the third sub-slot and the fourth sub-slot are communicated and the extension directions thereof are intersected, along the thickness direction of the second housing, the depth of the third sub-slot is greater than that of the fourth sub-slot, and a boss is protruded on the bottom wall of the third sub-slot;

[0009] The first magnet comprises a first main body and a first extension, the first extension is protruded on one side of the first main body and extends away from the first main body, and the second magnet comprises a second main body and an extension, the extension is protruded on one side of the second main body and extends away from the second main body;

[0010] The first magnet is mounted in the first mounting slot, the first main body is accommodated in the first sub-slot and connected with the bottom wall of the first sub-slot, and the first extension is accommodated in the second sub-slot and connected with the bottom wall of the second sub-slot;

[0011] The second magnet is mounted in the second mounting slot, the second main body is accommodated in the third sub-slot and the fourth sub-slot, and the second main body is connected with the bottom walls of the third sub-slot and the fourth sub-slot, and the extension is abutted with the boss;

[0012] The display screen is stacked on the first surface and the third surface, the first housing and the second housing are relatively rotated and folded, the display screen can be folded and accommodated between the first housing and the second housing, and the first magnet and the second magnet are opposite and adsorbed.

[0013] In the embodiment, the first mounting groove of the first shell is a heterogeneous groove, which includes two sub-grooves with different depths, and the thickness space of the first middle plate can be fully utilized. In addition, the groove opening of the first mounting groove is arranged on the first surface connected with the display screen. Generally, the first surface does not need to be provided with any device, and thus the space of the first middle plate for mounting other devices is not occupied. The first mounting groove does not need to additionally occupy the space of the first shell as a whole, and the first magnet can be arranged. Further, the first magnet is arranged as a heterogeneous magnet, and the space of the first mounting groove is fully utilized to improve the magnetic force range thereof. The depth of part of the first mounting groove is deepened, so that the first magnet is closer to the first shell covering the second surface. In this way, the magnetic force of the first magnet in the thickness direction of the first shell is also increased in the direction of the second surface, and thus the position corresponding to the first magnet of the first shell has a certain magnetism. The magnetism can attract the magnetic debris around the first frame to the surface of the first shell, so as to avoid that the magnetic impurities are attracted by the first magnet and enter the display screen between the first shell and the second shell through the first frame, thereby avoiding affecting the display of the display screen.

[0014] Similarly, the second mounting groove of the second shell is a heterogeneous groove, which includes two sub-grooves with different depths, and the thickness space of the second middle plate can be fully utilized. In addition, the groove opening of the second mounting groove is arranged on the second surface connected with the display screen. Generally, the second surface does not need to be provided with any device, and thus the space of the second middle plate for mounting other devices is not occupied. The second mounting groove does not need to additionally occupy the space of the second shell as a whole, and the second magnet can be arranged. Further, the second magnet is arranged as a heterogeneous magnet, and the space of the second mounting groove is fully utilized to improve the magnetic force range thereof. The depth of part of the second mounting groove is deepened, so that the second magnet is closer to the second shell covering the fourth surface. In this way, the magnetic force of the second magnet in the thickness direction of the second shell is also increased in the direction of the fourth surface, and thus the position corresponding to the second magnet of the second shell has a certain magnetism. The magnetism can attract the magnetic debris around the second frame to the surface of the second shell, so as to avoid that the magnetic impurities are attracted by the second magnet and enter the display screen between the first shell and the second shell through the second frame, thereby avoiding affecting the display of the display screen.

[0015] In an embodiment, the first middle plate includes a second surface, the first surface and the second surface are arranged back to each other along the thickness direction of the first middle plate, and the thickness from the groove bottom wall of the second sub-groove to the second surface is greater than or equal to 0.25 mm and less than or equal to 0.3 mm.

[0016] The second middle plate includes a fourth surface, the third surface and the fourth surface are arranged back to each other along the thickness direction of the second middle plate, and the thickness from the groove bottom wall of the third sub-groove to the fourth surface is greater than or equal to 0.25 mm and less than or equal to 0.3 mm.

[0017] In the embodiment, the second sub-groove and the third sub-groove increase the depth of the groove by using the partial thickness of the first middle plate and the second middle plate, while ensuring that the first middle plate and the second middle plate, on which the second sub-groove and the third sub-groove are arranged, have a thickness greater than or equal to 0.25 mm and less than or equal to 0.3 mm, which is sufficient to support the electronic devices located on the side of the shell and also ensures the strength of the first middle plate and the second middle plate.

[0018] In an embodiment, the foldable electronic device further includes an electronic device group arranged on the second surface and the fourth surface, respectively, and a first edge region of the first shell is located between the electronic device group and the first bezel, and a second edge region of the second shell is located between the electronic device group and the second bezel. In the embodiment, the edge region refers to the position of the four corners of the electronic device, and the edge region is usually not arranged with any components, especially on the side of the display screen. The position corresponding to the shell is usually on the side of the circuit board or the battery groove. In the embodiment, the first mounting groove utilizes the position of the first edge region of the first shell to avoid occupying additional space of the first shell. Similarly, the second mounting groove utilizes the position of the second edge region of the second shell to avoid occupying additional space of the second shell.

[0019] In an embodiment, the first magnet is connected with a first carrier, the first magnet includes a first sub-body, a second sub-body and a third sub-body, the first sub-body, the third sub-body and the second sub-body are sequentially connected to the surface of the first carrier along the length direction of the first magnet, the magnetism of the first sub-body and the second sub-body is opposite, the first extension part extends from the side of the first sub-body, the first extension part protrudes from the first carrier along the width direction of the first magnet, and the first carrier is connected to the groove bottom wall of the second sub-groove. In the embodiment, the first carrier integrates the first sub-body, the second sub-body and the third sub-body into one body, which is more convenient for mounting and fixing in the first mounting groove; the first carrier is a sheet body, and compared with the three parts of the first magnet, the surface of the first carrier is more flat, and the surface of the first carrier is more convenient and stable to connect with the surface of the groove bottom wall of the second sub-groove.

[0020] In an embodiment, the second magnet is connected with a second carrier, the second carrier includes a first body, a first partition sheet and a second partition sheet, the first partition sheet and the second partition sheet are formed by bending two adjacent sides of the first body, the first partition sheet and the second partition sheet are opposite to each other along the extension direction of the first body,

[0021] Along the thickness direction of the second magnet, the main body of the second magnet is connected to the surface of the first body, the first partition piece and the second partition piece respectively abut two adjacent sides of the main body of the second magnet, and the extension body protrudes from the second carrier body, and the surface of the second carrier body away from the second magnet is connected to the groove bottom wall of the third sub-groove and the groove bottom wall of the fourth sub-groove.

[0022] In an embodiment, the main body of the second body includes a fourth sub-body, a fifth sub-body and a sixth sub-body, the fourth sub-body, the sixth sub-body and the fifth sub-body are sequentially arranged along the length direction of the second magnet, the thickness of the fifth sub-body is the same as the thickness of the fourth sub-body, the thickness of the sixth sub-body is smaller than the thickness of the fifth sub-body and is in a stepped distribution with the fifth sub-body; the magnetism of the fourth sub-body and the fifth sub-body is opposite.

[0023] The fourth sub-body includes a body and a second extension, the second extension is protruded from the side surface of the body, the fifth sub-body includes a third extension, the third extension is protruded from the end of the fifth sub-body, and the second extension and the third extension constitute the extension body; the fifth sub-body and the fourth sub-body are accommodated in the third sub-groove, and the sixth sub-body is accommodated in the fourth sub-groove.

[0024] In the embodiment, the second carrier body integrates the fourth sub-body, the fifth sub-body and the sixth sub-body into one body, which is more convenient for installation and fixation in the second installation groove; the first body of the second carrier body is a piece body, which is more flat compared to the surface of the three-part first body of the second magnet, and is more flat and stable in linking with the groove bottom wall of the third sub-groove, and the first partition piece and the second partition piece can limit the fourth sub-body, the fifth sub-body and the sixth sub-body on the side surface of the second magnet, thereby improving the overall stability of the second magnet and facilitating its installation; in addition, the first partition piece and the second partition piece have a magnetic shielding effect, which can block the magnetism of the second magnet from exposing to the side direction, reduce the magnetism of the second magnet to the second bezel, and further reduce the adsorption of the second bezel to iron blood magnetic debris and other foreign matters.

[0025] In an embodiment, a plurality of auxiliary magnets are further arranged on the second shell, the plurality of auxiliary magnets are embedded in the first middle plate and located in the edge area of the second shell, and the plurality of auxiliary magnets are arranged at intervals along the area between the second installation groove and the second bezel, wherein the magnetism of the auxiliary magnets is opposite to the magnetism of the second magnet. By arranging a plurality of auxiliary magnets around the second magnet, the magnetism of the second magnet is blocked from emitting to the second bezel, which has a magnetic shielding effect, can block the magnetism of the second magnet from exposing to the side direction, reduce the magnetism of the second magnet to the second bezel, and further reduce the adsorption of the second bezel to iron blood magnetic debris and other foreign matters.

[0026] In one embodiment, the foldable electronic device further comprises a third magnet and a fourth magnet,

[0027] The first middle frame further comprises a third mounting slot recessed in the first surface, and the third mounting slot and the first mounting slot are arranged at intervals, the groove bottom wall of the third mounting slot is in a stepped distribution, and the second middle frame further comprises a fourth mounting slot recessed in the third surface, and the fourth mounting slot and the second mounting slot are arranged at intervals, and the groove bottom wall of the fourth mounting slot is in a stepped distribution.

[0028] The third magnet comprises a main body and a third extension, the third extension is protruded from one side of the main body of the third magnet, and the third extension and the main body of the third magnet are in a stepped distribution; the fourth magnet comprises a main body and a fourth extension, the fourth extension is protruded from one side of the main body of the fourth magnet, and the fourth extension and the main body of the fourth magnet are in a stepped distribution.

[0029] The third magnet is accommodated in the third mounting slot, the third extension and the main body of the third magnet are connected with the groove bottom wall of the third mounting slot, the surface of the third magnet facing away from the groove bottom wall of the third mounting slot is flush with the first surface, the fourth magnet is accommodated in the fourth mounting slot, the fourth extension and the main body of the fourth magnet are connected with the groove bottom wall of the fourth mounting slot, and the surface of the fourth magnet facing away from the groove bottom wall of the fourth mounting slot is flush with the third surface; the display screen is stacked on the first surface and the third surface, the first shell and the second shell are relatively rotated and folded, the display screen can be folded and accommodated between the first shell and the second shell, and the third magnet and the fourth magnet are opposite and adsorbed.

[0030] In this embodiment, the third mounting slot of the first shell is a heterogeneous slot, the depths of the groove bottom walls thereof are different, the thickness space of the first middle plate can be fully utilized, the slot opening of the third mounting slot is arranged on the first surface connected with the display screen, generally the first surface does not need to be provided with any device, thus the space of the first middle plate for installing other devices is not occupied, the third mounting slot as a whole does not need to additionally occupy the space of the first shell, and the third magnet can be arranged. Further, the third magnet is arranged as a heterogeneous magnet, the space of the third mounting slot is fully utilized to improve the magnetic force range thereof; part of the depth of the third mounting slot is deepened, so that the first magnet is closer to the first outer shell covering the second surface, so that the magnetic force of the third magnet in the thickness direction of the first shell is also increased in the direction of the second surface, and thus the position corresponding to the first outer shell and the third magnet has a certain magnetism, which can adsorb the magnetic debris around the first frame to the surface of the first outer shell, so as to avoid that the magnetic impurities are attracted by the third magnet and enter the display screen between the first shell and the second shell through the first frame, and affect the display of the display screen.

[0031] Similarly, the fourth mounting slot of the second shell is a female slot, the depth of the bottom wall of the slot is different, the thickness space of the second middle plate can be fully utilized, and the slot opening of the fourth mounting slot is arranged on the second surface connected with the display screen. Generally, the second surface does not need to be provided with any device, so the space of the fourth surface of the second middle plate for mounting other devices is not occupied, and the fourth mounting slot does not need to additionally occupy the space of the second shell as a whole, and the fourth magnet can be arranged. Further, the fourth magnet is arranged as a magnet with different magnetic poles, the space of the fourth mounting slot is fully utilized to improve the magnetic force range; part of the depth of the fourth mounting slot is deepened, so that the second magnet is closer to the second shell covering the fourth surface. In this way, the magnetic force of the fourth magnet in the thickness direction of the second shell is also increased in the direction of the fourth surface, so that the position corresponding to the fourth magnet of the second shell has a certain magnetism. The magnetism will attract the magnetic debris around the second frame to the surface of the second shell, so as to avoid the magnetic impurities being attracted by the fourth magnet and entering the display screen between the first shell and the second shell through the second frame, thereby avoiding affecting the display of the display screen.

[0032] In an embodiment, the third magnet is further connected with a third carrier, the third magnet includes a first sub-magnet, a second sub-magnet and a third sub-magnet, the first sub-magnet, the second sub-magnet and the third sub-magnet are connected to the surface of the third carrier, and the third extension part extends from one side of the third carrier,

[0033] The third mounting slot includes a fifth sub-slot and a sixth sub-slot, the fifth sub-slot is recessed in the first surface, the sixth sub-slot is recessed in the bottom wall of the fifth sub-slot, the third carrier is connected with the bottom wall of the fifth sub-slot, and the third extension body is accommodated in the sixth sub-slot. The third carrier positions the first sub-magnet, the second sub-magnet and the third sub-magnet as a whole, facilitates assembly of the first sub-magnet, the second sub-magnet and the third sub-magnet with the third mounting slot, and limits the first sub-magnet, the second sub-magnet and the third sub-magnet.

[0034] In an embodiment, the fourth magnet includes a fourth sub-magnet, a fifth sub-magnet and a sixth sub-magnet arranged in sequence, the fifth sub-magnet is provided with the fourth extension part at one end away from the sixth sub-magnet,

[0035] The fourth magnet is also connected with a fourth bearing body, the fourth bearing body comprises a second body, a third partition piece and a fourth partition piece, the third partition piece and the fourth partition piece are connected to two adjacent side edges of the second body, and the third partition piece and the fourth partition piece are arranged at an angle with the second body; the fourth sub-magnet, the sixth sub-magnet and the fifth sub-magnet are connected to the surface of the second body, the fourth extension part extends out of the second body, the third partition piece abuts one end of the fourth sub-magnet away from the sixth sub-magnet, and the fourth partition piece abuts the fourth sub-magnet and the sixth sub-magnet on one side in the width direction of the fourth magnet. The fourth bearing body positions the fourth sub-magnet, the fifth sub-magnet and the sixth sub-magnet as a whole, facilitates assembly of the fourth sub-magnet, the fifth sub-magnet and the sixth sub-magnet with the fourth mounting slot, and limits the fourth sub-magnet, the fifth sub-magnet and the sixth sub-magnet. The third partition piece and the fourth partition piece can limit the fourth sub-magnet, the fifth sub-magnet and the sixth sub-magnet on the side of the fourth magnet, improve the overall stability of the fourth magnet, and facilitate installation of the fourth magnet. Meanwhile, the third partition piece and the fourth partition piece have a magnetic shielding effect, can block the magnetic properties of the fourth magnet from being exposed to the side, reduce the magnetic properties of the fourth magnet on the second frame, and further reduce the adsorption of the second frame on iron blood magnetic debris and other foreign matters.

[0036] In an embodiment, the first housing comprises a third edge region, and the third mounting slot is located in the third edge region; the third mounting slot comprises a fifth sub-slot and a sixth sub-slot, the fifth sub-slot is recessed in the first surface, the main body of the third magnet is accommodated in the fifth sub-slot, the sixth sub-slot is recessed in the groove bottom wall of the fifth sub-slot, the third bearing body is connected with the groove bottom wall of the fifth sub-slot, and the third extension part is accommodated in the sixth sub-slot and connected with the groove bottom wall of the sixth sub-slot; the surface of the third magnet away from the groove bottom wall of the third mounting slot is flush with the first surface.

[0037] In one embodiment, the second housing includes a fourth edge region, and the fourth mounting slot is located in the fourth edge region; the fourth mounting slot includes a seventh sub-slot and an eighth sub-slot, the seventh sub-slot is recessed in the third surface, and the eighth sub-slot is recessed in a slot bottom wall of the seventh sub-slot; a main body of the fourth magnet is accommodated in the seventh sub-slot, a fourth carrier is connected with the slot bottom wall of the seventh sub-slot, and the fourth extension is accommodated in the eighth sub-slot and connected with a slot bottom wall of the eighth sub-slot; and a surface of the third magnet facing away from the slot bottom wall of the third mounting slot is flush with the first surface. In this embodiment, the third mounting slot utilizes the position of the edge region of the first housing, thereby avoiding occupying the space of the first housing. Similarly, the fourth mounting slot utilizes the position of the edge region of the second housing, thereby avoiding occupying the space of the second housing.

[0038] In one embodiment, the first middle plate includes a second surface, the first surface and the second surface are oppositely arranged along the thickness direction of the first middle plate, and the thickness of the slot bottom wall of the sixth sub-slot to the second surface is greater than or equal to 0.25 mm and less than or equal to 0.3 mm.

[0039] The second middle plate includes a fourth surface, the third surface and the fourth surface are oppositely arranged along the thickness direction of the second middle plate, and the thickness of the slot bottom wall of the eighth sub-slot to the fourth surface is greater than or equal to 0.25 mm and less than or equal to 0.3 mm.

[0040] In one embodiment, the first magnet, the second magnet, the third magnet and the fourth magnet are Halbach magnets. In this embodiment, the magnets can have a better magnetic field in the thickness direction, and the generated magnetic force can be better adsorbed to stabilize the positions of the first housing and the second housing. BRIEF DESCRIPTION OF DRAWINGS

[0041] In order to more clearly illustrate the technical solutions of the present application, the following will briefly introduce the drawings needed in the embodiments. Obviously, the drawings described below are only some embodiments of the present application, and other drawings can also be obtained without creative labor.

[0042] FIG. 1 is a structural schematic diagram of a foldable electronic device in a first state according to an embodiment of the present application;

[0043] FIG. 2a is a structural schematic diagram of a foldable electronic device in a second state according to an embodiment of the present application;

[0044] Fig. 2b is a plan view of the electronic device shown in Fig. 2a, showing the internal magnets;

[0045] Fig. 3 is an enlarged view of the internal structure at A of the electronic device shown in Fig. 2a;

[0046] Fig. 4a is a structural view of the first magnet of the electronic device shown in Fig. 2b;

[0047] Fig. 4b is an exploded structural view of the first magnet and the first carrier of the electronic device shown in Fig. 2b;

[0048] Fig. 5 is an enlarged view of the internal structure at B of the electronic device shown in Fig. 2a;

[0049] Fig. 6a is a structural view of the second magnet of the electronic device shown in Fig. 2b;

[0050] Fig. 6b is an exploded structural view of the second magnet and the second carrier of the electronic device shown in Fig. 2b;

[0051] Fig. 7 is a side view of part of the structure of the electronic device shown in Fig. 1 in the closed state, showing the first magnet and the second magnet;

[0052] Fig. 8 is an enlarged view of the internal structure at C of the electronic device shown in Fig. 2a;

[0053] Fig. 9a is a structural view of the third magnet of the electronic device shown in Fig. 2b;

[0054] Fig. 9b is an exploded structural view of the third magnet and the third carrier of the electronic device shown in Fig. 2b;

[0055] Fig. 10 is an enlarged view of the internal structure at D of the electronic device shown in Fig. 2a;

[0056] Fig. 11a is a structural view of the fourth magnet of the electronic device shown in Fig. 2b;

[0057] Fig. 11b is an exploded structural view of the fourth magnet and the fourth carrier of the electronic device shown in Fig. 2b. DETAILED DESCRIPTION

[0058] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0059] Please refer to FIG. 1 and FIG. 2a, FIG. 1 is a structural schematic diagram of a foldable electronic device in a first state according to an embodiment of the present application, and FIG. 2a is a structural schematic diagram of the foldable electronic device in a second state according to an embodiment of the present application.

[0060] The foldable electronic device shown in FIG. 1 is in a folded state, and the foldable electronic device shown in FIG. 2a is in an unfolded state. The foldable electronic device includes, but is not limited to, a cell phone, a notebook computer, a tablet personal computer, a personal digital assistant, or a mobile device, etc. In the embodiments of the present application, the foldable electronic device 1000 is taken as an example of a cell phone.

[0061] It should be noted that the angles illustrated in the embodiments of the present application are allowed to have a little deviation. For example, the unfolding angle of the cell phone shown in FIG. 2a is 180 degrees, which means that the angle can be 180 degrees, or approximately 180 degrees, such as 170 degrees, 175 degrees, 185 degrees, 190 degrees, etc. The angles illustrated in the following embodiments can be understood in the same way. In order to facilitate the description, the width direction of the foldable electronic device 1000 is defined as the X-axis direction, the length direction of the foldable electronic device 1000 is defined as the Y-axis direction, and the thickness direction of the foldable electronic device 1000 is defined as the Z-axis direction. The X-axis direction, the Y-axis direction and the Z-axis direction are perpendicular to each other.

[0062] It should be noted that the terms such as "top", "bottom", "left", "right", "front" and "back" used in the description of the foldable electronic device 1000 in the embodiments of the present application are mainly based on the display orientation of the cell phone in FIG. 1, and the "top" and "up" are towards the positive direction of the Z-axis, the "bottom" and "down" are towards the negative direction of the Z-axis, the "right" is towards the positive direction of the X-axis, the "left" is towards the negative direction of the X-axis, the "back" is towards the positive direction of the Y-axis, and the "front" is towards the negative direction of the Y-axis, which do not limit the orientation of the foldable electronic device 1000 in the actual application scenario.

[0063] Continuing to refer to FIG. 1 and FIG. 2a, the foldable electronic device 1000 of the present embodiment is an inward folding cell phone, which includes a main body 100 and a display screen 300, and the display screen 300 is installed on the main body 100. The display screen 300 includes a display surface and a mounting surface, and the display surface and the mounting surface are arranged opposite to each other. The display surface is used to display text, images, videos, etc. The display screen 300 of the present embodiment is a flexible display screen which can be folded.

[0064] The foldable electronic device 1000 further comprises functional devices for realizing basic performance of the electronic device, such as a processor, a memory, a circuit board assembly (not shown in the figure), and a power module; the processor, the memory, the circuit board assembly (not shown in the figure), and the power module are accommodated in the main body 100. The processor and the memory are connected with the circuit board assembly, and the power module provides power supply for the electronic devices such as the flexible display screen 300, the circuit board, the processor, and the memory. The circuit board assembly, the camera module, the power module, the loudspeaker, and the like can be referred to as an electronic device group.

[0065] Please refer to FIG. 2b, which is a plan view of the electronic device shown in FIG. 2a, showing the internal magnets; in this embodiment, the main body 100 comprises a first shell 10, a second shell 20, and a rotating mechanism 200. The rotating mechanism 200 is installed between the first shell 10 and the second shell 20, and the rotating mechanism 200 is connected with the first shell 10 and the second shell 20 respectively to realize the rotating connection between the first shell 10 and the second shell 20. The display screen is connected with the first shell 10 and the second shell 20 and covers the rotating mechanism 200. The first shell 10 and the second shell 20 can be relatively rotated through the rotating mechanism 200, so that the main body 100 can be switched between the folded state and the unfolded state, thereby realizing the folding and unfolding of the display screen. In an embodiment, a second display screen (not shown in the figure) is further arranged on the outside of the first shell 10 or the second shell 20, and the second display screen is used for display and operation of the mobile phone when the mobile phone is folded.

[0066] In an embodiment, the rotating mechanism 200 is a hinge, for example, the rotating mechanism 200 comprises two connected hinges, and the two hinges are arranged in sequence along the Y-axis direction, one of the hinges is connected with the first shell 10, and the other hinge is connected with the second shell 20. In other embodiments, the rotating mechanism 200 is two connected and relatively rotatable rotating shafts, one of the rotating shafts is rotatably connected with the first shell 10, and the other rotating shaft is rotatably connected with the second shell 20, to realize the relative rotation of the first shell 10 and the second shell 20. In other embodiments, the rotating mechanism 200 can also be a rotating structure of other structures, as long as it can realize the relative free rotation and relative folding of the first shell 10 and the second shell 20.

[0067] In the embodiment, the first shell 10 comprises a first middle frame 10a and a first outer shell 10b connected to one side of the first middle frame 10a, and a space capable of accommodating devices such as a circuit board or a battery is formed between the first outer shell 10b and the first middle frame 10a. The second shell 20 comprises a second middle frame 20a and a second outer shell 20b connected to one side of the second middle frame 20a, and a space capable of accommodating devices such as a circuit board or a battery, a camera, etc. is formed between the second outer shell 20b and the second middle frame 20a. The first outer shell 10b and the second outer shell 20b are the appearance shells of the mobile phone. The first shell 10 further comprises a first magnet 30 and a third magnet 50, and the second shell 20 further comprises a second magnet 40 and a fourth magnet 60. When the first shell 10 and the second shell 20 are folded, the first magnet 30 and the second magnet 40 are magnetically adsorbed, and the third magnet 50 and the fourth magnet 60 are magnetically adsorbed to position the first shell 10 and the second shell 20, so as to avoid the first shell 10 and the second shell 20 from being opened when being folded.

[0068] Referring to FIG. 3, which is an enlarged view of the internal structure at A of the electronic device shown in FIG. 2a, the first middle frame 10a comprises a first middle plate 11 and a first bezel 12 connected to the periphery of the first middle plate. The first middle plate 11 comprises a first surface 111 and a second surface arranged opposite to the first surface 111. The first outer shell 10b is arranged on the second surface. The display screen 300 is partially arranged on the first surface 111.

[0069] The first bezel 12 comprises a first sub-bezel 121 and a second sub-bezel 122. The first sub-bezel 121 and the second sub-bezel 122 are connected and intersected. The intersection of the first sub-bezel 121 and the second sub-bezel 122 is a bezel corner area, and the bezel corner area and the corner area of the first middle plate 11 are the edge area of the first middle frame 10a, which is referred to as the first edge area.

[0070] The first middle frame 10a is provided with a first circuit board (not shown in the figure), which can be a main board or a sub-board. The first circuit board is supported on the second surface. The first mounting groove 15 is located between the first circuit board and the first bezel 12 in the orthographic projection of the first middle frame 10a. This position is usually the empty space between the main board and the bezel, no device is arranged, and the thickness of the first middle plate also has a certain space. In the embodiment, the first mounting groove 15 utilizes the empty position and thickness of the first middle plate 11, without limiting the shape and depth of the first mounting groove 15, so as to improve the depth and area of the first mounting groove 15 without additionally occupying the position of the first middle frame, and match the first magnet 30 with a larger magnetic field. Details are described below.

[0071] The first middle frame 10a in the embodiment is rectangular. The first middle frame 10a comprises a first mounting groove 15. The first mounting groove 15 is recessed in the first surface 111. The first mounting groove 15 is located in the first edge region. In the embodiment, the first mounting groove 15 comprises a first sub-groove 151 and a second sub-groove 152. The first sub-groove 151 and the second sub-groove 152 are connected and communicate with each other. The first sub-groove 151 extends along the X-axis direction, i.e., along the length direction of the first sub-frame 121. The second sub-groove 152 extends along the Y-axis direction, i.e., along the length direction of the first sub-frame 121.

[0072] The first sub-groove 151 comprises a first groove bottom wall 1511, and the second sub-groove 152 comprises a second groove bottom wall 1521. The first groove bottom wall 1511 is connected with the second groove bottom wall 1521 and the extension directions thereof intersect. In the thickness direction of the middle frame, the first groove bottom wall 1511 protrudes from the second groove bottom wall 1521; that is, in the direction from the second surface to the first surface 111, the first groove bottom wall 1511 is higher than the second groove bottom wall 1521. The depth of the first sub-groove 151 is smaller than the depth of the second sub-groove 152. The first sub-groove 151 utilizes the space between the first circuit board and the first frame 12, and the second sub-groove 152 utilizes the thickness of the first middle plate. Compared with the first sub-groove 151, the depth of the second sub-groove 152 is larger. It can be understood that the first mounting groove 15 does not limit its shape, and utilizes the remaining space of the first middle plate. It does not need to additionally occupy the area of the first middle plate, and compared with only setting a regular groove, the volume of the first mounting groove 15 can be improved. It can be understood that the first mounting groove 15 is an L-shaped groove, the first groove bottom wall 1511 and the second groove bottom wall 1521 are groove bottom walls of the first mounting groove 15, and the groove bottom walls are in a stepped shape. It should be noted that the boundary between the first sub-groove 151 and the second sub-groove 152 can be set according to the actual shape of the vacant position of the first middle plate 11. In the embodiment, the first sub-groove 151 and the second sub-groove 152 are divided by a dashed line.

[0073] Referring to FIG. 4a and FIG. 4b, FIG. 4a is a structural schematic diagram of the first magnet of the electronic device shown in FIG. 2b, and FIG. 4b is a structural schematic diagram of the first magnet and the first carrier of the electronic device shown in FIG. 2b. The first magnet 30 is accommodated in the first mounting groove 15, and the shape of the first magnet 30 matches the shape of the first mounting groove 15. In the embodiment, the first magnet 30 is roughly in the shape of an L-shaped block. The first magnet 30 includes a first sub-body 31, a second sub-body 32, and a third sub-body 33, and the first sub-body 31, the third sub-body 33, and the second sub-body 32 are sequentially arranged along the length direction of the first magnet 30. The first sub-body 31 extends on one side with a first extension 311, and the first extension 311 extends away from the first sub-body 31 on one side thereof, and forms a stepped structure with the first sub-body 31. It can be understood that the first sub-body 31 is in the shape of an L-shaped block. In the embodiment, the first magnet 30 is a Halbach magnet, and the first sub-body 31 and the second sub-body 32 are magnetically opposite, for example, the first sub-body 31 is S-pole magnetic, and the second sub-body 32 is N-pole magnetic. The magnetic field lines of the first magnet 30 extend from the first sub-body 31 to the second sub-body 32.

[0074] The first magnet 30 includes a first surface 301 and a second surface 302 arranged away from the first surface. The first surface 301 and the second surface 302 are formed by the surfaces of the first sub-body 31, the second sub-body 32, and the third sub-body 33 in the same thickness direction. In the embodiment, the thickness (Z-axis direction) of the first sub-body 31, the second sub-body 32, and the third sub-body 33 of the first magnet 30 is roughly the same. The first sub-body 31 and the first extension 311 form a stepped structure on the second surface. It can be understood that the first magnet 30 includes a main body (the first sub-body 31, the second sub-body 32, and the third sub-body 33) and the first extension 311 formed on one surface of the main body.

[0075] Referring to FIG. 7, which is a side view of the electronic device in a closed state, showing the first magnet and the second magnet. The first magnet 30 is installed in the first installation slot 15, and the first sub-body 31, the second sub-body 32, and the third sub-body 33 are located in the second sub-slot 152, and the first surface 301 is connected to the second slot bottom wall 1521. The connection can be fixed by adhesives or other connection methods. The first extension 311 of the first sub-body 31 is located in the first sub-slot 151, and the first extension 311 is opposite and connected to the first slot bottom wall 1511. The second surface 302 is exposed to the first surface 111 of the first middle plate 11. In this embodiment, the side of the first sub-body 31 with the first extension 311 can protrude from the same side of the second sub-body and the third sub-body, and the protruding part is still located in the second sub-slot 152, that is, at the connection between the second sub-slot 152 and the first sub-slot 151. The first sub-slot 151 of the first installation slot 15 in this embodiment extends along the Y direction and can accommodate the first extension 311, increasing the length of the first magnet 30 in the Y direction and improving the magnetic force of the first magnet 30 in the Y direction. It should be noted that the shape and depth of the first installation slot 15 is only one embodiment, and the structure of the first magnet 30 is determined according to the position of the first installation slot 15.

[0076] In this embodiment, the minimum distance H from the slot bottom wall of the first installation slot 15 to the second surface of the first middle plate 11 is less than or equal to 0.3 mm. Specifically, the thickness of the second sub-slot from the second surface is greater than or equal to 0.25 mm and less than or equal to 0.3 mm; the distance between the first magnet 30 and the first outer shell 10b is small, and the magnetic field strength of the magnetic field of the first magnet 30 in the direction of the second surface of the first middle plate 11 is increased, that is, the magnetic field force on the first outer shell is increased.

[0077] As shown in FIGS. 4a and 4b, in one embodiment, a first carrier 35 is further connected to the first magnet 30. The first carrier 35 is a strip-shaped sheet with the same or approximately the same profile as the first surface 301 of the first magnet 30. The first sub-body 31, the second sub-body 32, and the third sub-body 33 are connected to the surface of the first carrier 35 by adhesives. The first magnet 30 is installed in the first installation slot 15, and the surface of the first carrier 35 opposite the first magnet 30 is connected to the surface of the second slot bottom wall 1521. The first magnet 30 and the first carrier 35 form a magnet assembly, and the first carrier 35 integrates the first sub-body 31, the second sub-body 32, and the third sub-body 33 into one body, making it easier to install and fix in the first installation slot 15; the first carrier 35 is a sheet, and compared to the three parts of the first magnet 30, the surface of the first carrier 35 is smoother, making it easier and more stable to connect to the surface of the second slot bottom wall 1521.

[0078] In one embodiment, the edge of the first carrier 35 is further provided with a partition piece (not shown in the figure), which is at an angle with the surface of the first carrier 35 carrying the first magnet 30. The first sub-body 31, the second sub-body 32 and the third sub-body 33 are fixed to the surface of the first carrier 35, and in the width direction of the first magnet, the partition piece abuts against the side surface of the second sub-body 32 and the third sub-body 33, further limiting the second sub-body 32 and the third sub-body 33. When the magnet assembly is installed in the first installation slot 15, the partition piece is close to the second sub-frame 122 of the first frame 12. The partition piece has a magnetic shielding effect and can block the magnetic field from passing through. The material of the partition piece can be metal, ceramic, glass fiber, etc. The partition piece can block the magnetic field of the first magnet 30 from radiating towards the first frame 12, reducing the magnetic force generated by the magnetic field at the position of the first frame 12; further reducing the magnetic impurity powder existing outside the main body from being adsorbed by the first magnet to between the first shell 10 and the second shell 20. On the first carrier 35, partition pieces can also be arranged at other positions, such as the side of the first sub-frame 121 of the first magnet 30 facing the first frame 12 or the end of the first magnet 30, which can also be provided with partition pieces.

[0079] Please refer to FIG. 5, which is an enlarged view of the internal structure at position B of the electronic device shown in FIG. 2a; the second middle frame 20a includes a second middle plate 21 and a second frame 22 connected to the periphery of the second middle plate. The second middle plate 21 includes a third surface 211 and a fourth surface arranged opposite to the third surface 211. The second shell 20b covers the fourth surface. The display screen 300 is partially overlapped with the third surface 211, and the display screen 300 is connected to the first surface 111 and the third surface 211 and covers the rotating shaft mechanism; the edge of the display screen 300 is connected to the first frame 12 and the second frame 22.

[0080] The second frame 22 includes a third sub-frame 221 and a fourth sub-frame 222. The third sub-frame 221 and the fourth sub-frame 222 are connected and intersected. The intersection position of the third sub-frame 221 and the fourth sub-frame 222 is the frame corner area. The corner area of the second frame 22 and the corner area of the second middle plate 21 are the edge area of the second middle frame 20a, referred to as the second edge area. The second middle frame 20a includes a second installation slot 25. The second installation slot 25 is recessed in the third surface 211. The second installation slot 25 is located in the second edge area.

[0081] In the embodiment, the second mounting groove 25 includes a third sub-groove 251 and a fourth sub-groove 252. The third sub-groove 251 and the fourth sub-groove 252 are connected and communicated, and the fourth sub-groove 252 is located on the side of the third sub-groove 251 along the Y-axis direction, that is, the fourth sub-groove 252 extends along the length direction of the fourth sub-frame 222 (Y-axis direction). The third sub-groove 251 includes a third groove bottom wall 2511, and the fourth sub-groove 252 includes a fourth groove bottom wall 2521. Along the thickness direction of the middle frame, the fourth groove bottom wall 2521 protrudes from the third groove bottom wall 2511; that is, in the direction from the fourth surface to the third surface 211, the fourth groove bottom wall 2521 is higher than the third groove bottom wall 2511. In the embodiment, the third sub-groove 251 is substantially rectangular, and the fourth groove bottom wall 2521 is substantially rectangular. It can be understood that the second mounting groove is substantially an L-shaped groove, and the third groove bottom wall 2511 and the fourth groove bottom wall 2521 are groove bottom walls of the second mounting groove 25, and the groove bottom wall is stepped.

[0082] The third groove bottom wall 2511 is provided with a first boss 2513 and a second boss 2514, the first boss 2513 and the second boss 2514 are sequentially arranged along the length direction of the second middle frame 20a, and along the width direction of the second middle plate 21, the first boss 2513 and the second boss 2514 are away from the third sub-frame 221 of the second frame 22. The first boss 2513 and the second boss 2514 are connected to the groove side wall of the third sub-groove 251. The heights of the first boss 2513 and the second boss 2514 can be different or the same. In the embodiment, compared with a regular rectangular groove, the second mounting groove 25 is provided with the fourth sub-groove 252 in the Y direction, and the first boss 2513 and the second boss 2514 are arranged inside the second middle plate 21, that is, in the X direction, in the third sub-groove 251, the edge spare position of the second middle plate 21 is utilized, and thus the area of the second mounting groove 25 is improved. When the magnet is mounted in the second mounting groove 25, the magnetic field force of the magnet also extends to the inside of the second middle plate 21. In the embodiment, the thickness from the groove bottom wall of the third sub-groove to the fourth surface is greater than or equal to 0.25 mm and less than or equal to 0.3 mm.

[0083] It can be understood that the second installation groove 25 utilizes the idle area of the second middle plate 21 close to the second frame 22, and the second installation groove 25 is arranged according to the shape and thickness of the area. The shape of the second installation groove 25 is irregular, and the non-planar bottom wall of the groove also utilizes the thickness space of the second middle frame. For example, the third surface 211 is used to carry the display screen 300 and will not be provided with devices, and the opening of the second installation groove 25 is arranged on the third surface 211. The fourth surface is used to arrange the battery compartment, the second circuit board and other structures, which will cause the fourth surface to be non-planar, and in turn cause the local thickness of the second middle plate to be different. The thickness of the bottom wall of the second installation groove 25 is also applied to the space. For example, the orthographic projection of the second installation groove 25 is located in the area between the second circuit board or the battery cover of the fourth surface and the second frame. The second installation groove 25 utilizes the space in the Y-axis direction and the X-axis direction on the premise of additionally occupying the space of the second middle plate 21 to improve the space for accommodating the second magnet 40.

[0084] Please refer to FIG. 6a and FIG. 6b, FIG. 6a is a structural schematic diagram of the second magnet of the electronic device shown in FIG. 2b; FIG. 6b is a structural schematic diagram of the second magnet and the second carrier of the electronic device shown in FIG. 2b. In the embodiment, the second magnet 40 is a Halbach magnet. The second magnet 40 includes a fourth sub-body 41, a fifth sub-body 42 and a sixth sub-body 43, and the fourth sub-body 41, the sixth sub-body 43 and the fifth sub-body 42 are sequentially arranged along the length direction of the second magnet 40. The fourth sub-body 41 and the fifth sub-body 42 are magnetically opposite, for example, the fourth sub-body 41 is S-pole magnetism and the fifth sub-body 42 is N-pole magnetism. The fourth sub-body 41 includes a body 410 and a second extension 411, and the second extension 411 protrudes from the side surface of the body 410. Specifically, the fourth sub-body 41 is an L-shaped block. The second extension 411 is formed by extending from the body 410, and the thickness of the second extension 411 is smaller than the thickness of the body 410. The fifth sub-body 42 is a rectangular block, and the third extension 421 protrudes from the fifth sub-body 42. The third extension 421 protrudes from the end of the fifth sub-body 42. The length direction of the fifth sub-body 42 is the same as the length direction of the fourth sub-body 41, and the thickness of the fifth sub-body 42 and the body 410 of the fourth sub-body 41 is the same or approximately the same. The sixth sub-body 43 is a rectangular block, and the overall size of the sixth sub-body 43 is smaller than that of the fifth sub-body 42. The fourth sub-body 41 is located on one side of the fifth sub-body 42, and the second extension 411 and the third extension 421 are located on the same side. It can be understood that the fourth sub-body 41, the fifth sub-body 42 and the sixth sub-body 43 are main bodies, and the second extension 411 and the third extension 421 are extension bodies. The sixth sub-body 43 is located on the side of the fifth sub-body 42 away from the fourth sub-body 41, and the surface in the thickness direction of the sixth sub-body 43 is flush with the surface of the fifth sub-body 42 away from the third extension 421. The thickness of the sixth sub-body 43 is smaller than the thickness of the fifth sub-body 42, and the sixth sub-body 43 is arranged in a stepped manner with the fifth sub-body 42. In the embodiment, the fourth sub-body 41, the fifth sub-body 42 and the sixth sub-body 43 are connected by glue.

[0085] The second magnet 40 comprises a third surface 401 and a fourth surface 402 arranged opposite to the third surface 401. The third surface 401 and the fourth surface 402 are formed by the same surfaces of the fourth sub-body 41, the fifth sub-body 42 and the sixth sub-body 43 in the thickness direction. The sixth sub-body 43 and the fifth sub-body 42 form a stepped structure in the direction of the third surface 401. It can be understood that the shape of the second magnet 40 is irregular.

[0086] As shown in FIGS. 6a and 6b, in an embodiment, the second magnet 40 is further connected with a second carrier 45, and the second carrier 45 is a sheet-shaped body. The second carrier 45 comprises a first body 451, a first partition sheet 454 and a second partition sheet 453. The first body 451 comprises a first portion 4511 and a second portion 4512, and the second portion 4512 is formed by bending one side of the first portion 4511 away from the first portion 4511. The first partition sheet 454 is connected to the edge of the first portion 4511 adjacent to the second portion 4512. The second partition sheet 453 is connected to the edge of the second portion 4512 away from the first portion 4511. The first partition sheet 454 and the second partition sheet 453 are arranged at an angle with the first body 451, and the bending directions of the first partition sheet 454 and the second partition sheet 453 after being bent relative to the first body 451 are the same.

[0087] The second magnet 40 is connected to the second carrier 45 by colloid, the third surface 401 faces the second magnet 40, the fifth sub-body 42 and the fourth sub-body 41 are connected to the surface of the first portion 4511, and the sixth sub-body 43 is connected to the surface of the second portion 4512. The first partition sheet 454 abuts one side of the fifth sub-body 42 provided with the third extension. The second partition sheet 453 abuts one side of the sixth sub-body 43 away from the fifth sub-body 42. The second magnet 40 and the second carrier 45 form a magnet assembly.

[0088] The second magnet 40 and the second carrier 45 form a magnet assembly accommodated in the second mounting groove 25, the fifth sub-body 42 and the fourth sub-body 41 are located in the third sub-groove 251, the sixth sub-body 43 is located in the fourth sub-groove 252, and the fourth surface 402 is exposed to the third surface 211 and flush with the third surface 211. The first portion 4511 is connected to the third groove bottom wall 2511, and the second extension 411 and the third extension 421 abut the first boss 2513 and the second boss 2514, respectively. The second portion 4512 is located in the fourth sub-groove and connected to the fourth groove bottom wall 2521. The first partition sheet 454 and the second partition sheet 453 abut the groove side wall of the second mounting groove 25, respectively. The first body 451 can be fixed on the groove side wall by a connection mode such as adhesive.

[0089] Please refer to FIG. 7, it can be understood that the sixth sub-body 43 extends along the Y-axis direction, which can increase the magnetic field area of the second magnet 40 along the Y-axis direction of the second frame 22, and further improve the adsorption force between the first shell and the second shell. Compared with the magnet of the prior art rule, the thickness of the fifth sub-body 42 and part of the fourth sub-body 41 of the second magnet 40 of the embodiment is greater than the thickness of the sixth sub-body 43, the second extension part 411 of the fourth sub-body 41 extends away from the second frame along the X direction, that is, part of the second magnet 40 extends in the direction close to the fourth surface, the magnetic field force increases in the direction of the second shell 20b, and the magnetic debris impurities located outside the second frame 22 and the second shell 20b are adsorbed on the outer surface of the second shell 20b, thereby avoiding entering the gap between the first shell and the second shell when the first shell 10 and the second shell 20 are folded, and avoiding damaging the display screen 300 (causing black spots on the display screen side).

[0090] In the folding state of the foldable electronic device in the embodiment of the application, the first shell 10 and the second shell 20 are relatively stacked, the display screen 300 is folded and accommodated between the first shell 10 and the second shell 20, and the first shell 10b and the second shell 20b face away from the display screen 300. The first magnet 30 and the second magnet 40 are opposite in the Z-axis direction, the magnetic force of the first magnet 30 and the magnetic force of the second magnet 40 attract each other, thereby positioning the first shell 10 and the second shell 20, and avoiding the first shell 10 and the second shell 20 from moving away from each other when being folded. Moreover, in the Y-axis direction, the first extension part of the first magnet 30 and the sixth sub-body 43 of the second magnet 40 increase the magnetic field area of the two magnets, and further improve the magnetic adsorption force.

[0091] During use or transportation, part of the thickness of the first magnet 30 and the second magnet 40 increases, the distance between the first shell and the second shell decreases, and the magnetic field force in the direction of the first shell 10b and the second shell 20b increases, as shown by the magnetic field lines M in FIG. 7. The magnetic debris impurities located outside the first shell 10b and the second shell 20b are adsorbed on the outer surface of the first shell 10b and the second shell 20b, and will not enter the gap between the first shell and the second shell because the first magnet 30 and the second magnet 40 are gathered in the first frame and the second frame, thereby avoiding damaging the display screen 300 (causing black spots on the display screen side) when the first shell 10 and the second shell 20 are folded.

[0092] Please refer to FIG. 8, which is an enlarged view of the internal structure at position C of the electronic device shown in FIG. 2a; the first middle frame 10a further comprises a third mounting slot 18, which is recessed in the first surface 111. The third mounting slot 18 and the first mounting slot 15 are opposite in the length direction of the first frame 12, and are close to the connection position of the second sub-frame 122 and the first sub-frame 121. The third mounting slot 18 is located in another edge region of the first middle frame 10a. The slot bottom wall of the third mounting slot 18 is in a stepped distribution.

[0093] The third mounting groove 18 includes a fifth sub-groove 181 and a sixth sub-groove 182. The fifth sub-groove 181 is recessed in the first surface 111 and is substantially rectangular. The fifth sub-groove 181 includes a fifth groove bottom wall 1811 and a groove side wall 1812. The groove side wall 1812 is connected to one side of the fifth groove bottom wall 1811 and is close to the second sub-bezel 122. The sixth sub-groove 182 is recessed in a portion of the fifth groove bottom wall 1811 where the fifth groove bottom wall 1811 and the groove side wall 1812 are connected, and the sixth sub-groove 182 is recessed into the first middle plate 11 from the wall surface of the fifth groove bottom wall 1811. The groove side wall of the sixth sub-groove 182 is connected to the groove side wall 1812. The groove bottom walls of the fifth sub-groove 181 and the sixth sub-groove 182 are the groove bottom walls of the third mounting groove 18, which are distributed in a stepped manner. In fact, since the second surface is provided with a circuit board and other devices, the thickness of the edge of the first middle plate 11 can be uneven, and the third mounting groove 18 utilizes the remaining space of the first middle plate to provide the fifth sub-groove 181 and the sixth sub-groove 182, and the sixth sub-groove 182 has a certain depth. The space is saved, and at the same time, the magnetic force of the magnet accommodated in the third mounting groove 18 in the direction of the first outer shell 10b can be increased. In the present embodiment, the thickness of the groove bottom wall of the sixth sub-groove 182 to the second surface is greater than or equal to 0.25 mm and less than or equal to 0.3 mm.

[0094] Please refer to Fig. 9a and Fig. 9b, Fig. 9a is a structural schematic diagram of the third magnet of the electronic device shown in Fig. 2b; Fig. 9b is a structural schematic diagram of the third magnet and the third carrier of the electronic device shown in Fig. 2b. The foldable electronic device 1000 further comprises a third magnet 50, the third magnet 50 comprises a first sub-magnet 51, a second sub-magnet 52, a third sub-magnet 53 and a third extension (not marked in the figure). The first sub-magnet 51 and the second sub-magnet 52 are opposite in polarity, for example, the first sub-magnet 51 is S-pole and the second sub-magnet 52 is N-pole. The first sub-magnet 51, the third sub-magnet 53 and the second sub-magnet 52 are sequentially connected along the length direction of the third magnet 50. The third magnet 50 comprises a fifth surface 501 and a sixth surface 502. Along the thickness direction of the third magnet 50, the first sub-magnet 51, the third sub-magnet 53 and the second sub-magnet 52 respectively constitute the fifth surface 501 and the sixth surface 502 towards the same surface. The third extension protrudes from one side of the sixth surface 502, and the third extension and the sixth surface 502 are in stepped distribution. Specifically, the third magnet 50 is in L-shaped structure. The surface of the first sub-magnet 51 protrudes a first protrusion 511, the surface of the third sub-magnet 53 protrudes a third protrusion 531, and the surface of the second sub-magnet 52 protrudes a second protrusion 521. The first protrusion 511, the second protrusion 521 and the third protrusion 531 are sequentially connected to form a strip-shaped third extension. Along the length direction of the third magnet 50, the length of the second protrusion 521 is smaller than the width of the second protrusion 521. It can be understood that the first sub-magnet 51, the second sub-magnet 52 and the third sub-magnet 53 are the main body of the third magnet 50.

[0095] The third magnet 50 is further connected with a third carrier 55, the third carrier 55 is a rectangular plate body, which is connected to the sixth surface to position the first sub-magnet 51, the second sub-magnet 52 and the third sub-magnet 53. The third carrier 55 is adjacent to the third extension, and the third carrier 55 and the third extension are in stepped distribution. The third carrier 55 is used to limit the first sub-magnet 51, the second sub-magnet 52 and the third sub-magnet 53 from each other. The third carrier 55 is connected to the sixth surface 502, and can also ensure the flatness of the sixth surface 502 of the third magnet 50.

[0096] The third magnet 50 is installed in the third installation slot 18, the third extension part is accommodated in the sixth sub-slot 182, the first sub-magnet 51, the second sub-magnet 52 and the third sub-magnet 53 are located in the fifth sub-slot 181, and the third bearing body 55 is opposite to the fifth slot bottom wall 1811 and connected. The third bearing body 55 and the third magnet 50 form a magnet assembly, which is more convenient than the direct installation of the first sub-magnet 51, the second sub-magnet 52 and the third sub-magnet 53. The third bearing body 55 is relatively flat, which facilitates the connection with the slot bottom wall of the third installation slot 18, thereby reducing the flatness of the slot bottom wall of the installation slot. It can be understood that, compared with a regular rectangular magnet, the third magnet 50 of the embodiment further has a third extension part, which increases the thickness of the third magnet, so that it is close to the first shell 10b, and the magnetic force of the third magnet in the direction of the first shell 10b is increased.

[0097] Please refer to FIG. 10, which is an enlarged view of the internal structure at D of the electronic device shown in FIG. 2a; the second shell 20 further includes a fourth installation slot 28 located at another edge region of the second middle frame 20a, and the fourth installation slot 28 is close to the third sub-frame 221 and the fourth sub-frame 222. In the embodiment, the fourth installation slot 28 includes a seventh sub-slot 281 and an eighth sub-slot 282. The seventh sub-slot 281 is recessed in the third surface 211 and is substantially rectangular. The seventh sub-slot 281 includes a sixth slot bottom wall 2811. The eighth sub-slot 282 is recessed in the sixth slot bottom wall 2811 and close to the third sub-frame 221, and the eighth sub-slot 282 is recessed into the second middle plate 21 from the wall surface of the sixth slot bottom wall 2811. The eighth sub-slot 282 includes a seventh slot bottom wall 2821. The fourth installation slot 28 extends along the length direction of the third sub-frame 221, and its cross-sectional area is substantially L-shaped; the slot bottom walls of the seventh sub-slot 281 and the eighth sub-slot 282 are the slot bottom walls of the fourth installation slot 28, which are in a stepped shape. In fact, since the second surface is provided with a circuit board and other devices, the thickness of the edge of the second middle plate 21 may not be uniform, and the fourth installation slot 28 uses the remaining space of the second middle plate 21 to set the seventh sub-slot 281 and the eighth sub-slot 282, and the eighth sub-slot 282 has a certain depth. In the embodiment, the thickness of the slot bottom wall of the eighth sub-slot 282 to the fourth surface is greater than or equal to 0.25 mm and less than or equal to 0.3 mm.

[0098] Referring to FIG. 11a and FIG. 11b, FIG. 11a is a structural schematic diagram of the fourth magnet of the electronic device shown in FIG. 2b; FIG. 11b is a structural schematic diagram of the fourth magnet and the fourth carrier of the electronic device shown in FIG. 2b. The foldable electronic device 1000 further includes a fourth magnet 60. The fourth magnet 60 includes a fourth sub-magnet 61, a fifth sub-magnet 63, and a sixth sub-magnet 62. The fourth sub-magnet 61, the fifth sub-magnet 63, and the sixth sub-magnet 62 are sequentially connected along the length direction of the fourth magnet 60. The fourth sub-magnet 61 and the fifth sub-magnet 63 are magnetically opposite. The fourth magnet 60 includes a seventh surface 601 and an eighth surface 602. Along the thickness direction of the fourth magnet 60, the fourth sub-magnet 61, the fifth sub-magnet 63, and the sixth sub-magnet 62 respectively form the seventh surface 601 and the eighth surface 602 towards the same surface. Specifically, along the thickness direction of the fourth magnet 60, the fifth sub-magnet 63 is provided with a fourth extension 632, which is formed by extending from one end of the fifth sub-magnet 63 away from the sixth sub-magnet 62. The fourth extension 632 is away from the fifth sub-magnet 63 and forms a step distribution. The fourth sub-magnet 61, the fifth sub-magnet 63, and the sixth sub-magnet 62 can be understood as the main body of the fourth magnet.

[0099] The fourth magnet 60 is further connected with a fourth carrier 65. The fourth carrier 65 includes a second body 651, a third partition piece 652, and a fourth partition piece 653. The second body 651 is substantially a rectangular piece. The third partition piece 652 and the fourth partition piece 653 are connected to two adjacent sides of the second body 651. The third partition piece 652 and the fourth partition piece 653 are arranged at an angle with the second body 651. The eighth surface of the fourth magnet 60 is connected to the surface of the second body 651. The fourth extension 632 extends out of the second body 651. The third partition piece 652 abuts against one end of the fourth sub-magnet 61 away from the sixth sub-magnet 62. The fourth partition piece 653 abuts against the fourth sub-magnet 61 and the sixth sub-magnet 62 on one side in the width direction of the fourth magnet 60.

[0100] The fourth magnet 60 is installed in the fourth mounting slot 28. The fourth sub-magnet 61, the fifth sub-magnet 63, and the sixth sub-magnet 62 are located in the eighth sub-slot 282. The second body 651 is opposite to and connected with the seventh slot bottom wall 2821. The fourth extension 632 is located in the seventh sub-slot 281 and abuts against the sixth slot bottom wall 2811. The fourth carrier 65 facilitates the installation and connection of the fourth magnet 60 with the fourth mounting slot 28. In this embodiment, the fourth magnet 60 sets the fourth extension 632 along the position of the fourth sub-bezel 222 by using the second middle plate. This improves the area of the fourth magnet 60 and enhances the overall magnetic field strength. It can also be understood that the thickness of the fourth sub-magnet 61, the sixth sub-magnet 62, and the fifth sub-magnet 63 in the thickness direction of the second middle frame is increased. This saves space and can increase the magnetic force of the magnet accommodated in the fourth mounting slot 28 in the direction of the second outer shell 20b.

[0101] In the folding state of the foldable electronic device, the first housing 10 and the second housing 20 are relatively stacked, the display screen 300 is folded and accommodated between the first housing 10 and the second housing 20, and the first outer shell 10b and the second outer shell 20b face away from the display screen 300. The fourth magnet 60 and the third magnet 50 are opposite in the Z-axis direction, and the magnetic force of the fourth magnet 60 and the magnetic force of the third magnet 50 attract each other, together with the first magnet 30 and the second magnet 40, to position the first housing 10 and the second housing 20, avoiding the first housing 10 and the second housing 20 from moving away from each other when folding.

[0102] During use or transportation, magnetic impurities outside the first outer shell 10b and the second outer shell 20b can be adsorbed on the outer surface of the first outer shell 10b and the second outer shell 20b, and will not enter the gap of the first housing 10 and the second housing 20 due to the aggregation of the fourth magnet 60 and the third magnet 50 in the first and second frames, thereby avoiding damage to the display screen 300 (causing black spots on the display screen side) when the first housing 10 and the second housing 20 are folded. The carrier of any of the above embodiments limits the magnet, and the partition piece can reduce the magnetic field of the magnet penetrating in the frame direction and reduce the magnetic force in the frame direction.

[0103] It should be noted that the first mounting groove 15, the second mounting groove 25, the third mounting groove 18 and the fourth mounting groove 28 described in the present application are schematic structures of four different mounting grooves for accommodating magnets, but their shapes are not limited to the above four listed ones. As long as the mounting grooves are made by utilizing the space of the edge area of the middle frame, the technical problems solved by the present application can be solved, such as fully utilizing the space, adjusting the magnetic field of the magnet, and reducing the magnetic force near the frame position. The first mounting groove 15, the second mounting groove 25, the third mounting groove 18 and the fourth mounting groove 28 can all be called mounting grooves, and the first magnet, the second magnet, the third magnet and the fourth magnet 60 can all be called magnets, and all use Halbach magnets. In fact, the present application optimizes the entire electronic device in the X-axis, Y-axis and Z-axis directions. The thickness of the magnet in the Z-axis direction is increased, so that the magnetic foreign matter moves to the side of the shell; the position moves away from the edge of the frame. On the basis of increasing the magnetic force of the magnet, the effect of preventing the electronic device from adsorbing foreign matter on the side of the display screen 300 is also improved.

[0104] Referring to FIG. 2b, the second shell of the embodiment of the present application is further provided with a plurality of auxiliary magnets 70, which are embedded between the second magnets 40 and the second frame 22, and are distributed at the edges of the second magnets 40. The magnetism of the auxiliary magnets 70 is opposite to that of the second magnets 40 in the direction of the second frame. The magnetic force of the auxiliary magnets 70 and that of the second magnets 40 in the direction of the second frame 22 are opposite to each other, which can reduce the magnetic force of the second magnets 40 in the direction of the second frame 22, further reduce the magnetic force at the position of the second frame 22, and effectively avoid the second frame 22 at the position from adsorbing magnetic debris and other impurities. Auxiliary magnets can also be arranged outside other magnets, which will not be described again.

[0105] The above has described the embodiments of the present application in detail, and the principles and implementation manners of the present application have been described by applying specific examples. The above description of the embodiments is only used to help understand the method of the present application and its core idea; meanwhile, for those skilled in the art, the specific implementation manners and application ranges can be changed according to the idea of the present application. In conclusion, the content of the specification should not be understood as a limitation of the present application.

Claims

1. A foldable electronic device, characterized by, The foldable electronic device comprises a display screen, a first magnet, a second magnet, a first shell and a second shell rotationally connected with the first shell, The first shell comprises a first middle plate and a first frame connected with the edge of the first middle plate, the first shell comprises a first edge area adjacent to the first frame, the first middle plate comprises a first surface and a first installation slot, the first installation slot is recessed in the first surface and located in the edge area of the first shell, the first installation slot comprises a first sub-slot and a second sub-slot, the first sub-slot and the second sub-slot are communicated and the extension directions thereof are intersected, along the thickness direction of the first shell, the depth of the second sub-slot is greater than that of the first sub-slot; The second shell comprises a second middle plate and a second frame connected with the edge of the second middle plate, the second shell further comprises a second edge area adjacent to the second frame, the second middle plate comprises a third surface and a second installation slot, the second installation slot is recessed in the third surface and located in the edge area of the second shell, the second installation slot comprises a third sub-slot and a fourth sub-slot, the third sub-slot and the fourth sub-slot are communicated and the extension directions thereof are intersected, along the thickness direction of the second shell, the depth of the third sub-slot is greater than that of the fourth sub-slot, a boss is protruded on the bottom wall of the third sub-slot; The first magnet comprises a first main body and a first extension, the first extension is protruded on one side of the first main body and extends away from the first main body; the second magnet comprises a second main body and an extension body, the extension body is protruded on one side of the second main body and extends away from the second main body; The first magnet is installed in the first installation slot, the first main body is accommodated in the first sub-slot and connected with the bottom wall of the first sub-slot, and the first extension is accommodated in the second sub-slot and connected with the bottom wall of the second sub-slot; The second magnet is installed in the second installation slot, the second main body is accommodated in the third sub-slot and the fourth sub-slot, the second main body is connected with the bottom wall of the third sub-slot and the fourth sub-slot, and the extension body is abutted with the boss; The display screen is stacked on the first surface and the third surface, the first shell and the second shell are rotationally folded, the display screen can be folded and accommodated between the first shell and the second shell, and the first magnet and the second magnet are opposite and adsorbed.

2. The foldable electronic device of claim 1, wherein, The first middle plate comprises a second surface, the first surface and the second surface are oppositely arranged along the thickness direction of the first middle plate, and the thickness from the bottom wall of the second sub-slot to the second surface is greater than or equal to 0.25mm and less than or equal to 0.3mm; The second middle plate comprises a fourth surface, the third surface and the fourth surface are oppositely arranged along the thickness direction of the second middle plate, and the thickness from the bottom wall of the third sub-slot to the fourth surface is greater than or equal to 0.25mm and less than or equal to 0.3mm.

3. The foldable electronic device of claim 2, wherein, The foldable electronic device further includes an electronic component group disposed on the second surface and the fourth surface, respectively, a first edge region of the first housing being located between the electronic component group and the first bezel, and a second edge region of the second housing being located between the electronic component group and the second bezel.

4. The foldable electronic device of any of claims 1-3, wherein, The first magnet is connected with a first carrier, the first magnet includes a first sub-body, a second sub-body and a third sub-body, the first sub-body, the third sub-body and the second sub-body are sequentially connected to the surface of the first carrier along the length direction of the first magnet, the magnetism of the first sub-body and the second sub-body is opposite, the first extension part extends from the side of the first sub-body, the first extension part protrudes from the first carrier along the width direction of the first magnet, and the first carrier is connected to the groove bottom wall of the second sub-groove.

5. The foldable electronic device of any of claims 1-3, wherein, The second magnet is connected with a second carrier, the second carrier includes a first body, a first partition piece and a second partition piece, the first partition piece and the second partition piece are formed by bending two adjacent sides of the first body, the first partition piece and the second partition piece are opposite to the extension direction of the first body, The main body of the second magnet is connected to the surface of the first body along the thickness direction of the second magnet, the first partition piece and the second partition piece abut two adjacent sides of the main body of the second magnet respectively, the extension body protrudes from the second carrier, and the surface of the second carrier opposite to the second magnet is connected to the groove bottom wall of the third sub-groove and the groove bottom wall of the fourth sub-groove.

6. The foldable electronic device of claim 5, wherein, The main body of the second main body includes a fourth sub-body, a fifth sub-body and a sixth sub-body, the fourth sub-body, the sixth sub-body and the fifth sub-body are sequentially arranged along the length direction of the second magnet, the thickness of the fifth sub-body is the same as the thickness of the fourth sub-body, the thickness of the sixth sub-body is smaller than the thickness of the fifth sub-body and is in a stepped distribution with the fifth sub-body; and the magnetism of the fourth sub-body and the fifth sub-body is opposite. The fourth sub-body includes a body and a second extension part protruding from the side surface of the body, the fifth sub-body includes a third extension part protruding from the end surface of the fifth sub-body, and the second extension part and the third extension part constitute the extension body; the fifth sub-body and the fourth sub-body are accommodated in the third sub-groove, and the sixth sub-body is accommodated in the fourth sub-groove.

7. The foldable electronic device of any of claims 1-3, wherein, The second housing is further provided with a plurality of auxiliary magnets, the plurality of auxiliary magnets are embedded in the first middle plate and located in the edge region of the second housing, and the plurality of auxiliary magnets are arranged at intervals along the region between the second mounting groove and the second bezel, wherein the magnetism of the auxiliary magnets is opposite to the magnetism of the second magnet.

8. The foldable electronic device of any of claims 1-3, wherein, The foldable electronic device further includes a third magnet and a fourth magnet, The first shell further comprises a third mounting groove recessed in the first surface, and the third mounting groove and the first mounting groove are arranged at intervals, and the groove bottom wall of the third mounting groove is in a stepped distribution, and the second shell further comprises a fourth mounting groove recessed in the third surface, and the fourth mounting groove and the second mounting groove are arranged at intervals, and the groove bottom wall of the fourth mounting groove is in a stepped distribution; The third magnet comprises a main body and a third extension, the third extension is protruded from one side of the main body of the third magnet, and the third extension and the main body of the third magnet are in a stepped distribution; the fourth magnet comprises a main body and a fourth extension, the fourth extension is protruded from one side of the main body of the fourth magnet, and the fourth extension and the main body of the fourth magnet are in a stepped distribution; The third magnet is accommodated in the third mounting groove, the third extension and the main body of the third magnet are connected with the groove bottom wall of the third mounting groove, and the surface of the third magnet away from the groove bottom wall of the third mounting groove is flush with the first surface, the fourth magnet is accommodated in the fourth mounting groove, the fourth extension and the main body of the fourth magnet are connected with the groove bottom wall of the fourth mounting groove, and the surface of the fourth magnet away from the groove bottom wall of the fourth mounting groove is flush with the third surface; The display screen is stacked on the first surface and the third surface, the first shell and the second shell are relatively rotated and folded, the display screen can be folded and accommodated between the first shell and the second shell, and the third magnet and the fourth magnet are opposite and adsorbed.

9. The foldable electronic device of claim 8, wherein, The third magnet is further connected with a third carrier, the third magnet comprises a first sub-magnet, a second sub-magnet and a third sub-magnet, the first sub-magnet, the second sub-magnet and the third sub-magnet are connected to the surface of the third carrier, and the third extension is protruded from one side of the third carrier, The third mounting groove comprises a fifth sub-groove and a sixth sub-groove, the fifth sub-groove is recessed in the first surface, the sixth sub-groove is recessed in the groove bottom wall of the fifth sub-groove, the third carrier is connected with the groove bottom wall of the fifth sub-groove, and the third extension body is accommodated in the sixth sub-groove.

10. The foldable electronic device of claim 8, wherein, The fourth magnet comprises a fourth sub-magnet, a fifth sub-magnet and a sixth sub-magnet arranged in sequence, the fifth sub-magnet is provided with the fourth extension at one end away from the sixth sub-magnet, The fourth magnet is further connected with a fourth carrier, the fourth carrier comprises a second body, a third partition piece and a fourth partition piece, the third partition piece and the fourth partition piece are connected to two adjacent side edges of the second body, and the third partition piece and the fourth partition piece are arranged at an angle with the second body; the fourth sub-magnet, the sixth sub-magnet and the fifth sub-magnet are connected to the surface of the second body, the fourth extension is protruded from the second body, the third partition piece abuts one end of the fourth sub-magnet away from the sixth sub-magnet, and the fourth partition piece abuts one side of the fourth sub-magnet and the sixth sub-magnet in the width direction of the fourth magnet.

11. The foldable electronic device of claim 10, wherein, The first housing includes a third edge region, and the third mounting slot is located in the third edge region; the third mounting slot includes a fifth sub-slot and a sixth sub-slot, the fifth sub-slot is recessed in the first surface, the main body of the third magnet is accommodated in the fifth sub-slot, the sixth sub-slot is recessed in the bottom wall of the fifth sub-slot, the third carrier is connected with the bottom wall of the fifth sub-slot, and the third extension is accommodated in the sixth sub-slot and connected with the bottom wall of the sixth sub-slot; the surface of the third magnet away from the bottom wall of the third mounting slot is flush with the first surface.

12. The foldable electronic device of claim 10, wherein, The second housing includes a fourth edge region, and the fourth mounting slot is located in the fourth edge region; the fourth mounting slot includes a seventh sub-slot and an eighth sub-slot, the seventh sub-slot is recessed in the third surface, the eighth sub-slot is recessed in the bottom wall of the seventh sub-slot, the main body of the fourth magnet is accommodated in the seventh sub-slot, the fourth carrier is connected with the bottom wall of the seventh sub-slot, and the fourth extension is accommodated in the eighth sub-slot and connected with the bottom wall of the eighth sub-slot; the surface of the third magnet away from the bottom wall of the third mounting slot is flush with the first surface.

13. The foldable electronic device of claim 12, wherein, The first middle plate includes a second surface, the first surface and the second surface are arranged away from each other along the thickness direction of the first middle plate, and the thickness from the bottom wall of the sixth sub-slot to the second surface is greater than or equal to 0.25 mm and less than or equal to 0.3 mm. The second middle plate includes a fourth surface, the third surface and the fourth surface are arranged away from each other along the thickness direction of the second middle plate, and the thickness from the bottom wall of the eighth sub-slot to the fourth surface is greater than or equal to 0.25 mm and less than or equal to 0.3 mm.

14. The electronic device of claim 8, wherein, The first magnet, the second magnet, the third magnet and the fourth magnet are Halbach magnets.

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