Foldable electronic device and housing device

Abstract

Provided in the present application are a foldable electronic device and a housing device. A first mounting groove is provided in the side portion of a first middle frame of the electronic device close to a second middle frame. A first groove end wall of the first mounting groove is arranged opposite a second groove end wall thereof. A first groove side wall of the first mounting groove is connected between the first groove end wall and the second groove end wall. A first reinforcing member is fixed to the first groove end wall. In the length extension direction, a folding mechanism comprises a first end and a second end, which are oppositely arranged. The first end is provided with a first stop block. When the electronic device is in a closed state, the first reinforcing member is located between the first groove side wall and the first stop block, and abuts against the first stop block. The yield strength of the first reinforcing member is greater than the yield strength of the first middle frame, and / or the micro Vickers hardness of the first reinforcing member is greater than the microscopic Vickers hardness of the first middle frame. The first reinforcing member can avoid the problem of the first stop block colliding with the adjacent part of the first middle frame and thus resulting in the occurrence of local collapse in the first middle frame.

Description

Foldable electronic device and housing device

[0001] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office of China on August 11, 2023, with application number 202311015324.8, and priority to the Chinese patent application entitled “Foldable electronic device and housing device”, all contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the field of foldable electronic devices, and in particular to a foldable electronic device and a housing device. Background Art

[0003] With the continuous development of flexible display technology, it is widely used in a variety of foldable electronic devices. Foldable electronic devices often include a housing assembly for supporting the flexible display. The housing assembly generally includes two middle frames and a folding mechanism connected between the two housings. The two middle frames fold or unfold relative to each other under the folding mechanism. In traditional inward-folding electronic devices, when the electronic device is dropped, especially when the electronic device is closed, the portion of the middle frame adjacent to the folding mechanism's rotating axis is susceptible to impact force from the axis, causing local collapse and deformation. Therefore, current inward-folding electronic devices typically use higher-strength materials to manufacture the middle frame to improve the overall impact and deformation resistance of the middle frame. However, using high-strength materials for the entire middle frame significantly increases the weight and manufacturing cost of the middle frame. How to solve the problem of local collapse and deformation of the portion of the middle frame adjacent to the folding mechanism's rotating axis due to impact force while also achieving a lighter and lower-cost middle frame has become a research direction.

[0004] Summary of the Invention

[0005] The embodiments of the present application provide a foldable electronic device and a shell device, aiming to provide a shell device that is light in weight and has a low manufacturing cost while being able to solve the problem of local collapse and deformation of the middle frame adjacent to the rotating shaft of the folding mechanism due to impact force, and an electronic device including the shell device.

[0006] In a first aspect, a foldable electronic device is provided. The electronic device includes a screen, a first middle frame, a folding mechanism, a second middle frame, and a first reinforcement member. The screen is mounted on the first and second middle frames. The folding mechanism connects the first and second middle frames. The first and second middle frames are relatively unfolded or folded to drive the screen to unfold or fold relative to each other. A first mounting groove is provided on the side of the first middle frame adjacent to the second middle frame. The first mounting groove includes a first groove end wall, a second groove end wall, and a first groove side wall. The first groove end wall is disposed opposite the second groove end wall. The first groove side wall is connected between the first groove end wall and the second groove end wall. The first reinforcement member is located on the side of the first groove end wall facing the second groove end wall and is fixed to the first groove end wall. A portion of the folding mechanism is located within the first mounting groove. The folding mechanism includes a first end portion and a second end portion disposed opposite to each other in its longitudinal extension direction. A first stop block is provided at the first end portion. The electronic device has an open state and a closed state. When the electronic device is in the open state, the first and second middle frames are relatively flattened, the first sidewall of the first mounting slot faces the second middle frame, and the first reinforcing member is located between the first sidewall and the first stop block of the folding mechanism. When the electronic device is in the closed state, the first and second middle frames are relatively folded, and the first reinforcing member is located between the first sidewall and the first stop block and abuts the first stop block. The yield strength of the first reinforcing member is greater than the yield strength of the first middle frame, and / or the micro-Vickers hardness of the first reinforcing member is greater than the micro-Vickers hardness of the first middle frame.

[0007] It can be understood that in this embodiment, the first middle frame of the electronic device has a first mounting groove for mounting a portion of the folding mechanism, and a first reinforcement member is fixed to the first groove end wall of the first mounting groove. The yield strength of the first reinforcement member can be greater than the yield strength of the first middle frame, and / or the micro-Vickers hardness of the first reinforcement member can be greater than the micro-Vickers hardness of the first middle frame. In this way, when the electronic device falls, especially when the electronic device falls in a closed state, the first reinforcement member can directly withstand the impact force from the first stop block of the folding mechanism, thereby effectively avoiding the problem that the first stop block of the folding mechanism collides strongly with the adjacent part of the first middle frame due to the large impact force, causing the first middle frame to partially collapse and deform, which is beneficial to extending the service life of the electronic device.

[0008] Secondly, compared with traditional electronic devices in which the yield strength and / or micro-Vickers hardness of the first middle frame are improved by preparing the first middle frame with high-strength materials, but at the same time, the weight and manufacturing cost of the first middle frame are greatly increased by using high-strength materials for preparation as a whole. In this embodiment, only the first reinforcement is set between the first groove side wall of the first installation groove and the first stop block of the folding mechanism, and the yield strength of the first reinforcement is greater than the yield strength of the first middle frame, and / or the micro-Vickers hardness of the first reinforcement is greater than the micro-Vickers hardness of the first middle frame, so there is no need to replace the material of the entire first middle frame with high-strength material, so that the overall weight of the first middle frame is lighter, which is conducive to the lightweight design of the electronic device. At the same time, the preparation cost of the first middle frame is low, which is conducive to reducing the manufacturing cost of the entire electronic device.

[0009] In one possible implementation, a first assembly groove is provided on the end wall of the first groove. A first reinforcement member is fixed to the first assembly groove and is at least partially located within the first assembly groove. When the electronic device is in an open state, the first middle frame and the second middle frame are relatively flattened, the first groove wall of the first assembly groove faces the second middle frame, and the first reinforcement member is located between the first groove wall of the first assembly groove and the first stop block of the folding mechanism. When the electronic device is in a closed state, the first middle frame and the second middle frame are relatively folded, and the first reinforcement member is located between the first groove wall and the first stop block and abuts against the first stop block.

[0010] It is understandable that the first middle frame in this embodiment has a first assembly groove for assembling the first reinforcement member. By arranging the first reinforcement member in the first assembly groove, the first reinforcement member can be located between the first groove wall of the first assembly groove and the first stop block of the folding mechanism. The yield strength of the first reinforcement member can be greater than the yield strength of the first middle frame, and / or the micro-Vickers hardness of the first reinforcement member can be greater than the micro-Vickers hardness of the first middle frame. In this way, when the electronic device falls, especially when the electronic device falls in a closed state, the first reinforcement member can directly withstand the impact force from the first stop block of the hinge structure, thereby effectively preventing the first stop block of the hinge structure from being subjected to a large impact force and colliding strongly with the adjacent part of the first middle frame (i.e., the first groove wall of the first assembly groove in this embodiment), causing the first middle frame to locally collapse and deform, which is beneficial to extending the service life of the electronic device.

[0011] In one possible implementation, the first reinforcement member includes a first surface disposed away from the side wall of the first groove. The first stop block includes a first stop surface. When the electronic device is in an open state, the first stop surface is disposed toward the screen. When the electronic device switches from an open state to a closed state, the first middle frame folds relative to the second middle frame until the first surface of the first reinforcement member abuts against the first stop surface of the first stop block. In this way, the first stop surface of the first stop block can cooperate with the first surface of the first reinforcement member when the electronic device is closed, thereby preventing the first middle frame and the second middle frame from over-folding and damaging the screen.

[0012] In one possible implementation, when the electronic device is in the open state, the direction in which the first middle frame points toward the second middle frame is a first direction. In the first direction, the distance between the first reinforcement member and the first stop block of the folding mechanism is less than or equal to 3 mm. This allows the first reinforcement member to be positioned adjacent to the first stop block of the folding mechanism, providing improved impact resistance and extending the lifespan of the electronic device.

[0013] In one possible implementation, the first assembly slot further includes a second slot wall. The second slot wall faces the first mounting slot. The electronic device further includes a fastener. The fastener secures the first reinforcing member to the second slot wall. Thus, securing the first reinforcing member to the second slot wall via the fastener facilitates improved connection stability between the first reinforcing member and the second slot wall.

[0014] In one possible implementation, the first reinforcing member is provided with a mounting hole. The second slot wall is provided with a mounting groove. The mounting hole is connected to the mounting groove. A portion of the fastener is located in the mounting hole, and another portion of the fastener is located in the mounting groove.

[0015] It is understandable that the shell device in this embodiment may also include a fastener. The first reinforcement may also be provided with a mounting hole. The second groove wall of the first assembly groove may also be provided with a mounting groove. The fastener may sequentially pass through the mounting hole of the first reinforcement and the mounting groove of the second groove wall to fix the first reinforcement to the first assembly groove. In this way, a portion of the fastener may be embedded in the first reinforcement, and another portion of the fastener may be embedded in the first middle frame. On the one hand, this is beneficial to improving the connection reliability between the first reinforcement and the first middle frame. On the other hand, a portion of the fastener is embedded in the first middle frame, so that when the first reinforcement is subjected to the impact force from the folding mechanism, a portion of the impact load can also be transmitted to the first middle frame through the fastener, so that the first middle frame can also share a portion of the impact load, which is beneficial to improving the impact resistance of the first reinforcement.

[0016] In one possible implementation, a first angle is formed between the centerline of the mounting hole and the bottom wall of the first mounting groove. The first angle is less than 90°. The opening of the mounting hole faces the screen. In this way, the mounting hole can be tilted relative to the first mounting groove toward the bottom wall of the screen, thereby facilitating the insertion of the fastener into the mounting hole and the mounting groove, making it easier to secure the first reinforcement member and improving assembly efficiency.

[0017] In one possible implementation, the first reinforcement member is provided with a limiting protrusion. The limiting protrusion is spaced apart from the mounting hole. The second groove wall is further provided with a mating groove. The mating groove is spaced apart from the mounting groove. The limiting protrusion is embedded in the mating groove. In this way, on the one hand, the limiting protrusion can cooperate with the fastener to enhance the connection stability between the first reinforcement member and the first assembly groove; on the other hand, when the first reinforcement member is subjected to the impact force from the first stop block of the folding mechanism, the limiting protrusion can also share a portion of the impact load, allowing the first reinforcement member to withstand a greater impact force, which is beneficial to improving the impact resistance of the first reinforcement member.

[0018] In one possible implementation, a second angle is formed between the centerline of the limiting protrusion and the first direction. The second angle is less than 90°. The opening of the second angle faces the first slot wall. The first direction is the direction in which the first middle frame points toward the second middle frame when the electronic device is in the open state.

[0019] It is understood that in this embodiment, a limiting protrusion is provided on the surface of the first reinforcement member facing the first assembly groove (in this embodiment, the second surface of the first reinforcement member). The limiting protrusion can form a second angle less than 90° with the first direction, and the opening of the second angle can face the first groove wall of the first assembly groove. In other words, the opening of the second angle β can face the third surface of the first reinforcement member. In this way, when the first reinforcement member is impacted by the first stop block of the folding mechanism, the limiting protrusion can also share some of the impact load, allowing the first reinforcement member to withstand greater impact force, thereby improving the first reinforcement member's impact resistance.

[0020] In one possible implementation, the first assembly slot further includes a second slot wall. The second slot wall faces the first mounting slot. A connecting protrusion is provided on a surface of the first reinforcement member facing the second slot wall. The second slot wall includes a mounting groove. The connecting protrusion is embedded in the mounting groove to secure the first reinforcement member to the second slot wall.

[0021] It is understood that this embodiment forms a connecting protrusion on the surface of the first reinforcement member facing the second slot wall of the first assembly slot (i.e., the second surface of the first reinforcement member in this embodiment). The connecting protrusion cooperates with the mounting groove to secure the first reinforcement member to the second slot wall. This replaces the need for additional fasteners (e.g., screws) to secure the first reinforcement member to the second slot wall. This eliminates the need for additional fasteners for the housing device, thus reducing the overall manufacturing cost of the electronic device. Furthermore, the connecting protrusion in this embodiment is formed directly on the surface of the first reinforcement member, allowing the two to be integrally formed, simplifying the manufacturing process. Furthermore, the smaller size of the two can better accommodate electronic devices with thinner first midframe walls, thus expanding their application.

[0022] In one possible implementation, the folding mechanism includes a first connecting structure, a second connecting structure and a hinge structure. The hinge structure connects the first connecting structure and the second connecting structure. At least a portion of the first connecting structure is located in the first mounting groove and is connected to the first middle frame. A second mounting groove is provided on the side of the second middle frame close to the first middle frame. At least a portion of the second connecting structure is located in the second mounting groove and is connected to the second middle frame. In the length extension direction of the folding mechanism, the hinge structure includes a first end and a second end that are relatively arranged. The first stop block is located on the side of the first end away from the second end and is fixedly connected to the first end. In this way, the first stop block can be located at the end of the hinge structure, so that while achieving the stopping function, it does not affect the relative movement of the hinge structure and other components.

[0023] In one possible implementation, when the electronic device is in the open state, the direction from the first middle frame to the second middle frame is the first direction. In the first direction, the width of the first stop block is smaller than the width of the hinge structure. This way, when the electronic device is in the closed state, the first stop block can achieve its retaining function without increasing the thickness of the electronic device in the closed state, providing a better user experience.

[0024] In one possible implementation, the difference between the yield strength of the first reinforcing member and the yield strength of the first middle frame is greater than 50 MPa, and / or the difference between the micro-Vickers hardness of the first reinforcing member and the micro-Vickers hardness of the first middle frame is greater than 30 HV. This improves the impact resistance of the first reinforcing member, thereby extending the service life of the electronic device.

[0025] In one possible implementation, the yield strength of the first reinforcement is less than or equal to the yield strength of the first stop block of the folding mechanism, and / or the micro Vickers hardness of the first reinforcement is less than or equal to the micro Vickers hardness of the first stop block of the folding mechanism.

[0026] It is understood that the yield strength of the first reinforcing member in this embodiment can be lower than the yield strength of the first stop block of the folding mechanism, and / or the micro-Vickers hardness of the first reinforcing member can be lower than the micro-Vickers hardness of the first stop block. In this way, when the first reinforcing member collides with the first stop block, the first stop block is less likely to be damaged by the first reinforcing member, which helps to extend the service life of the first stop block.

[0027] Alternatively, the yield strength of the first reinforcing member may be equal to the yield strength of the first stop block of the folding mechanism, and / or the micro-Vickers hardness of the first reinforcing member may be equal to the micro-Vickers hardness of the first stop block. Thus, on the one hand, the higher yield strength of the first reinforcing member allows the first reinforcing member to better withstand the impact force from the first stop block of the folding mechanism, thereby improving the impact resistance of the first reinforcing member. On the other hand, the equal yield strength of the first reinforcing member and the yield strength of the first stop block of the folding mechanism prevent the first reinforcing member from being easily deformed even when impacted by the first stop block of the folding mechanism, thereby extending the service life of the first reinforcing member. Furthermore, the greater yield strength of the first reinforcing member and / or the greater micro-Vickers hardness of the first reinforcing member than the yield strength of the first stop block of the folding mechanism prevent the first stop block of the folding mechanism from locally collapsing and deforming upon collision with the first reinforcing member, thereby extending the service life of the folding mechanism and, consequently, the service life of the entire electronic device.

[0028] In one possible implementation, the first reinforcing member is made of titanium alloy, iron-based material, aluminum-based material, copper-based material, or nickel-based material. In this way, the first reinforcing member has strong impact resistance and can meet the drop reliability requirements of the electronic device.

[0029] In one possible implementation, the first middle frame includes a main body plate, a first extension plate, a second extension plate and a third extension plate. The first extension plate and the second extension plate are connected to the same side of the main body plate, and are respectively located at both ends of the main body plate. The third extension plate is connected between the first extension plate and the second extension plate. The third extension plate is also connected to the main body plate, and there is a height difference with the main body plate in the thickness direction of the first middle frame. The main body plate, the first extension plate, the second extension plate and the third extension plate form a first mounting groove. The surface of the first extension plate facing the second extension plate constitutes the end wall of the first groove, and the surface of the main body plate facing the first extension plate constitutes the side wall of the first groove. In this way, the first middle frame can have a first mounting groove for installing part of the folding mechanism, so that the folding mechanism can utilize the thickness space of the first middle frame, which is conducive to realizing a thin setting of the electronic device.

[0030] In a second aspect, a housing device is provided. The housing device includes a first middle frame, a folding mechanism, a second middle frame, and a first reinforcement member. The folding mechanism connects the first and second middle frames. The first and second middle frames can be unfolded or folded relative to each other to allow the housing device to be opened or closed relative to each other. A first mounting slot is provided on the side of the first middle frame adjacent to the second middle frame. The first mounting slot includes a first slot end wall, a second slot end wall, and a first slot side wall. The first slot end wall and the second slot end wall are disposed opposite each other. The first slot side wall is connected between the first and second slot end walls. A first reinforcement member is located on the side of the first slot end wall facing the second slot end wall and is fixed to the first slot end wall. A portion of the folding mechanism is located within the first mounting slot. The folding mechanism extends longitudinally and includes first and second ends disposed opposite each other. A first stop block is provided at the first end. The housing device has an open state and a closed state. In the open state, the first and second middle frames are flattened relative to each other, the first slot side wall of the first mounting slot faces the second middle frame, and the first reinforcement member is located between the first slot side wall and the first stop block of the folding mechanism. When the housing device is in a closed state, the first and second middle frames are folded relative to each other, and the first reinforcing member is located between the first slot sidewall and the first stop block, abutting the first stop block. The first reinforcing member has a yield strength greater than the yield strength of the first middle frame, and / or a micro-Vickers hardness greater than the micro-Vickers hardness of the first middle frame.

[0031] It is understandable that in this embodiment, the first middle frame of the shell device has a first mounting groove for mounting a portion of the folding mechanism, and a first reinforcement member is fixed to the first groove end wall of the first mounting groove. The yield strength of the first reinforcement member can be greater than the yield strength of the first middle frame, and / or the micro-Vickers hardness of the first reinforcement member can be greater than the micro-Vickers hardness of the first middle frame. In this way, when the shell device falls, especially when the shell device falls in a closed state, the first reinforcement member can directly withstand the impact force from the first stop block of the folding mechanism, thereby effectively preventing the first stop block of the folding mechanism from being subjected to a large impact force and colliding strongly with the adjacent portion of the first middle frame, causing the first middle frame to locally collapse and deform, which is beneficial to extending the service life of the shell device.

[0032] Secondly, compared with the traditional shell device in which the first middle frame is prepared by using high-strength materials to improve the yield strength and / or micro-Vickers hardness of the first middle frame, but at the same time, the whole is prepared by using high-strength materials, which also greatly increases the weight and manufacturing cost of the first middle frame. In this embodiment, only the first reinforcement is set between the first groove side wall of the first installation groove and the first stop block of the folding mechanism, and the yield strength of the first reinforcement is greater than the yield strength of the first middle frame, and / or the micro-Vickers hardness of the first reinforcement is greater than the micro-Vickers hardness of the first middle frame, so there is no need to replace the material of the first middle frame as a whole with high-strength material, so that the overall weight of the first middle frame is lighter, which is conducive to the lightweight design of the shell device. At the same time, the preparation cost of the first middle frame is low, which is conducive to reducing the manufacturing cost of the entire shell device.

[0033] In one possible implementation, a first assembly groove is provided on the end wall of the first groove. The first reinforcement member is fixed to the first assembly groove and is at least partially located within the first assembly groove. When the shell device is in an open state, the first middle frame and the second middle frame are relatively flattened, and the first groove wall of the first assembly groove faces the second middle frame. The first reinforcement member is located between the first groove wall of the first assembly groove and the first stop block of the folding mechanism. When the shell device is in a closed state, the first middle frame and the second middle frame are relatively folded, and the first reinforcement member is located between the first groove wall and the first stop block and abuts against the first stop block.

[0034] It is understood that in this embodiment, the first middle frame has a first assembly groove for assembling the first reinforcement member. By arranging the first reinforcement member in the first assembly groove, the first reinforcement member can be located between the first groove wall of the first assembly groove and the first stop block of the folding mechanism. The yield strength of the first reinforcement member can be greater than the yield strength of the first middle frame, and / or the micro-Vickers hardness of the first reinforcement member can be greater than the micro-Vickers hardness of the first middle frame. In this way, when the shell device falls, especially when the shell device falls in the closed state, the first reinforcement member can directly withstand the impact force from the first stop block of the hinge structure, thereby effectively preventing the first stop block of the hinge structure from being subjected to a large impact force and colliding strongly with the adjacent part of the first middle frame (i.e., the first groove wall of the first assembly groove in this embodiment), causing the first middle frame to locally collapse and deform, thereby extending the service life of the shell device.

[0035] In one possible implementation, the side of the shell device used to mount the screen is the mounting side of the shell device. The first reinforcement member includes a first surface disposed away from the first groove wall. The first stop block includes a first stop surface. When the shell device is in an open state, the first stop surface is disposed toward the mounting side. When the shell device switches from an open state to a closed state, the first middle frame is folded relative to the second middle frame until the first surface of the first reinforcement member abuts against the first stop surface of the first stop block. In this way, the first stop surface of the first stop block can cooperate with the first surface of the first reinforcement member when the shell device is closed, thereby preventing the first middle frame and the second middle frame from being excessively folded.

[0036] In one possible implementation, when the housing device is in the open state, the direction in which the first middle frame points toward the second middle frame is a first direction. In the first direction, the distance between the first reinforcing member and the first stop block of the folding mechanism is less than or equal to 3 mm. This allows the first reinforcing member to be positioned adjacent to the first stop block of the folding mechanism, providing improved impact resistance and extending the service life of the housing device.

[0037] In one possible implementation, the first assembly slot further includes a second slot wall. The second slot wall faces the first mounting slot. The housing assembly further includes a fastener. The fastener secures the first reinforcing member to the second slot wall. Thus, securing the first reinforcing member to the second slot wall via the fastener facilitates improved connection stability between the first reinforcing member and the second slot wall.

[0038] In one possible implementation, the first reinforcement member is provided with a mounting hole. The second slot wall is provided with a mounting groove. The mounting hole communicates with the mounting groove. A portion of the fastener is located within the mounting hole. Another portion of the fastener is located within the mounting groove.

[0039] It is understandable that the shell device in this embodiment may also include a fastener. The first reinforcement may also be provided with a mounting hole. The second groove wall of the first assembly groove may also be provided with a mounting groove. The fastener may sequentially pass through the mounting hole of the first reinforcement and the mounting groove of the second groove wall to fix the first reinforcement to the first assembly groove. In this way, a portion of the fastener may be embedded in the first reinforcement, and another portion of the fastener may be embedded in the first middle frame. On the one hand, this is beneficial to improving the connection reliability between the first reinforcement and the first middle frame. On the other hand, a portion of the fastener is embedded in the first middle frame, so that when the first reinforcement is subjected to the impact force from the folding mechanism, a portion of the impact load can also be transmitted to the first middle frame through the fastener, so that the first middle frame can also share a portion of the impact load, which is beneficial to improving the impact resistance of the first reinforcement.

[0040] In one possible implementation, a first angle is formed between the centerline of the mounting hole and the bottom wall of the first mounting groove. The first angle is less than 90°. The opening of the mounting hole faces the mounting side. In this way, the mounting hole can be tilted relative to the first mounting groove toward the bottom wall of the screen, thereby facilitating the insertion of the fastener into the mounting hole and the mounting groove, making it easier to secure the first reinforcement member and improving assembly efficiency.

[0041] In one possible implementation, the difference between the yield strength of the first reinforcing member and the yield strength of the first middle frame is greater than 50 MPa, and / or the difference between the micro-Vickers hardness of the first reinforcing member and the micro-Vickers hardness of the first middle frame is greater than 30 HV. This improves the impact resistance of the first reinforcing member, thereby extending the service life of the housing device.

[0042] In one possible implementation, the yield strength of the first reinforcing member is less than or equal to the yield strength of the first stop block of the folding mechanism, and / or the micro-Vickers hardness of the first reinforcing member is less than or equal to the micro-Vickers hardness of the first stop block of the folding mechanism. It is understood that in this embodiment, the yield strength of the first reinforcing member may also be less than the yield strength of the first stop block of the folding mechanism, and / or the micro-Vickers hardness of the first reinforcing member may also be less than the micro-Vickers hardness of the first stop block. In this way, when the first reinforcing member collides with the first stop block, the first stop block is less likely to be damaged by the first reinforcing member, which helps to extend the service life of the first stop block.

[0043] Alternatively, the yield strength of the first reinforcing member may be equal to the yield strength of the first stop block of the folding mechanism, and / or the micro-Vickers hardness of the first reinforcing member may be equal to the micro-Vickers hardness of the first stop block. Thus, on the one hand, the higher yield strength of the first reinforcing member allows the first reinforcing member to better withstand the impact force from the first stop block of the folding mechanism, thereby improving the impact resistance of the first reinforcing member. On the other hand, the equal yield strength of the first reinforcing member and the yield strength of the first stop block of the folding mechanism prevent the first reinforcing member from being easily deformed even when impacted by the first stop block of the folding mechanism, thereby extending the service life of the first reinforcing member. Furthermore, the greater yield strength of the first reinforcing member and / or the greater micro-Vickers hardness of the first reinforcing member than the yield strength of the first stop block of the folding mechanism prevent the first stop block of the folding mechanism from locally collapsing and deforming upon collision with the first reinforcing member, thereby extending the service life of the folding mechanism and, consequently, the service life of the entire housing device.

[0044] In one possible implementation, the first reinforcing member is made of titanium alloy, iron-based material, aluminum-based material, copper-based material, or nickel-based material. In this way, the first reinforcing member has a strong impact resistance and can meet the drop reliability requirements of the housing device. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] In order to more clearly illustrate the technical solutions in the implementation methods or background technologies of the present application, the drawings required for use in the implementation methods or background technologies of the present application will be described below.

[0046] FIG1a is a schematic structural diagram of an electronic device provided in an embodiment of the present application when in an open state;

[0047] FIG1b is a schematic structural diagram of the electronic device shown in FIG1a in a closed state;

[0048] FIG2 is a schematic diagram of an exploded structure of the electronic device shown in FIG1a in some embodiments;

[0049] FIG3 is a schematic diagram of a partial structure of a housing device of the electronic device shown in FIG1a in one embodiment;

[0050] FIG4 is a schematic diagram of the exploded structure of the housing device shown in FIG3 in one embodiment;

[0051] FIG5 is a schematic structural diagram of a first middle frame of the housing device shown in FIG4 ;

[0052] FIG6 is a schematic structural diagram of a reinforcing member of the housing device shown in FIG3 at different viewing angles in one embodiment;

[0053] FIG7 a is a schematic diagram of a partial assembly structure of the first reinforcing member, the fastener, and the first middle frame of the housing device shown in FIG3 ;

[0054] FIG7 b is a schematic diagram of a partial cross-sectional structure of an embodiment of the electronic device shown in FIG1 a taken along line AA;

[0055] FIG8 is a schematic structural diagram of the folding mechanism of the housing device shown in FIG3 ;

[0056] FIG9 is a schematic diagram of a partial cross-sectional structure of an embodiment of the electronic device shown in FIG1a taken along line BB;

[0057] FIG10 a is a schematic diagram of the assembly structure of the first middle frame and the folding mechanism shown in FIG4 ;

[0058] FIG10 b is a schematic diagram of a partial assembly structure of the first middle frame, the second middle frame and the folding mechanism shown in FIG4 ;

[0059] FIG11 is a schematic diagram of a partial cross-sectional structure of an embodiment of the electronic device shown in FIG1b taken along CC;

[0060] FIG12 is a schematic diagram of a partial cross-sectional structure of an embodiment of the electronic device shown in FIG1b taken along line DD;

[0061] FIG13 is a schematic diagram of a partial cross-sectional structure of an embodiment of the electronic device shown in FIG1b taken along line DD;

[0062] FIG14 is a schematic diagram of a partial cross-sectional structure of an embodiment of the electronic device shown in FIG1a taken along line AA;

[0063] FIG15 is a schematic diagram of a partial cross-sectional structure of an embodiment of the electronic device shown in FIG1a taken along line EE;

[0064] FIG16 is a schematic structural diagram of the reinforcing member shown in FIG6 in another embodiment from different perspectives;

[0065] FIG17 is a schematic structural diagram of the structure shown in FIG7b at different viewing angles in another embodiment;

[0066] FIG18 is a schematic structural diagram of the reinforcement member shown in FIG6 in another embodiment;

[0067] FIG19 is a schematic structural diagram of the structure shown in FIG7b in another embodiment from another perspective;

[0068] FIG20 is a schematic diagram of a partial structure of the structure shown in FIG10a in another embodiment. DETAILED DESCRIPTION

[0069] The embodiments of the present application are described below in conjunction with the accompanying drawings in the embodiments of the present application.

[0070] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. Among them, "fixed connection" means that the two are connected to each other and the relative position relationship after connection remains unchanged. The directional terms mentioned in the embodiments of the present application, such as "upper", "lower", "inside", "outside", etc., are only reference to the directions of the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of the present application, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application. "Multiple" means at least two.

[0071] In the embodiments of this application, the terms "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature specified as "first," "second," "third," or "fourth" may explicitly or implicitly include one or more of the features.

[0072] In the embodiments of this application, "and / or" is simply a description of the association relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this document generally indicates that the related objects are in an "or" relationship.

[0073] References to "one embodiment" or "some embodiments" in this specification mean that a particular feature, structure, or characteristic described in conjunction with the embodiment is included in one or more embodiments of the present application. Thus, phrases such as "in one embodiment," "in some embodiments," "in some other embodiments," and "in another embodiment" appearing in various places in this specification do not necessarily refer to the same embodiment, but rather mean "one or more but not all embodiments," unless otherwise specifically emphasized. The terms "including," "comprising," "having," and variations thereof all mean "including but not limited to," unless otherwise specifically emphasized.

[0074] It is understood that the specific embodiments described herein are only used to explain the relevant invention, rather than to limit the invention. It should also be noted that, for ease of description, only the parts related to the invention are shown in the drawings.

[0075] Figure 1a is a schematic diagram of the structure of an electronic device 1000 provided in an embodiment of the present application in an open state. Figure 1b is a schematic diagram of the structure of the electronic device 1000 shown in Figure 1a in a closed state. Figure 2 is a schematic diagram of the exploded structure of the electronic device 1000 shown in Figure 1a in some embodiments.

[0076] As shown in Figures 1a to 2, electronic device 1000 may include a housing device 100 and a screen 200. Screen 200 may be mounted on mounting side 100a of housing device 100. Housing device 100 may be in an open state, as shown in Figure 1a, or in a closed state, as shown in Figure 1b. Housing device 100 may also be in an intermediate state between unfolding and folding. The intermediate state may be any state between the open and closed states. Screen 200 may move along with housing device 100. Housing device 100 may cause screen 200 to unfold or fold, allowing electronic device 1000 to unfold to an open state or fold to a closed state. When electronic device 1000 is in a closed state, screen 200 may be located inside housing device 100. In other words, electronic device 1000 may be an inward-folding screen electronic device. It should be understood that Figures 1a and 1b merely schematically illustrate some components of electronic device 1000, and the actual shape, size, and structure of these components are not limited by Figures 1a and 1b. In other implementations, when the electronic device 1000 is a device of other forms, the electronic device 1000 may not include the screen 200 .

[0077] In this embodiment, when electronic device 1000 is in the open state, screen 200 can be flattened. In this case, screen 200 can display full screen, and electronic device 1000 has a larger display area, which is conducive to improving the user's viewing and operating experience. When electronic device 1000 is in the closed state, the planar size of electronic device 1000 is small, making it easy for users to carry and store.

[0078] For example, the housing device 100 may include a first housing 10, a second housing 20, and a folding mechanism 30. The folding mechanism 30 may connect the first housing 10 and the second housing 20. The folding mechanism 30 may move so that the first housing 10 and the second housing 20 can be relatively unfolded to an open state, or relatively folded to a closed state. The screen 200 may be fixedly connected to the first housing 10 and the second housing 20. The first housing 10 may include a first middle frame 11 and a first back cover 12. The first back cover 12 may be located on the side of the first middle frame 11 facing away from the screen 200 and fixedly connected to the first middle frame 11. The second housing 20 may include a second middle frame 21 and a second back cover 22. The second back cover 22 may be located on the side of the second middle frame 21 facing away from the screen 200 and fixedly connected to the second middle frame 21. In this case, the surface of the first back cover 12 facing away from the first middle frame 11 may constitute the exterior surface of the first housing 10. The surface of the second back cover 22 facing away from the second middle frame 21 may constitute the exterior surface of the second housing 20. It should be understood that the first housing 10 and the second housing 20 are both housing members used to mount and secure other components of the electronic device, and have a variety of structures. The folding mechanism 30 is used to achieve relative movement between the first housing 10 and the second housing 20, and also has a variety of structures. The embodiments of this application do not strictly limit the specific structures of the first housing 10, the second housing 20, and the folding mechanism 30. The drawings of this application only illustrate the general structure of the first housing 10, the second housing 20, and the folding mechanism 30 in one embodiment.

[0079] Exemplarily, the screen 200 may be integrated with a display function and a touch sensing function. The display function of the screen 200 is used to display images, videos, etc., and the touch sensing function of the screen 200 is used to sense the user's touch actions to achieve human-computer interaction. Exemplarily, the screen 200 includes a flexible display screen that can be bent. Among them, the flexible display screen can adopt a liquid crystal display (LCD), an organic light-emitting diode (OLED) display screen, an active matrix organic light-emitting diode or an active matrix organic light-emitting diode (AMOLED) display screen, a flexible light-emitting diode (FLED) display screen, a MiniLED display screen, a MicroLED display screen, a Micro-OLED display screen, a quantum dot light-emitting diode (QLED) display screen, etc. For ease of understanding, the direction that is the same as the light emitting direction of the screen 200 is defined as "up", and the direction opposite to the light emitting direction of the screen 200 is defined as "down".

[0080] For example, the electronic device 1000 may further include multiple components (not shown in the figure), which are installed inside the housing device 100. The multiple components may include, for example, a processor, an internal memory, an external memory interface, a universal serial bus (USB) interface, a charging management module, a power management module, a battery, an antenna, a communication module, a camera, an audio module, a speaker, a receiver, a microphone, a headphone jack, a sensor module, a button, a motor, an indicator, and a subscriber identification module (SIM) card interface.

[0081] In this embodiment, the electronic device 1000 is taken as an example of a two-fold structure, that is, the electronic device 1000 includes two flat parts and a bent part connected between the two flat parts. Among them, the two flat parts can be rotated toward each other to overlap each other (corresponding to the closed state in the previous text), so that the electronic device 1000 presents a two-layer form; the two flat parts can also be rotated away from each other to be flattened (corresponding to the open state in the previous text). In other embodiments, the electronic device 1000 can also be a structure that folds three or more, that is, the electronic device 1000 includes three or more flat parts, and two adjacent flat parts are connected by a bent part, and the two adjacent flat parts can be rotated relative to each other to overlap each other or rotated away from each other to be flattened. When the electronic device 1000 is a structure that folds three or more, the structure of the electronic device 1000 can be adaptively designed with reference to the description of the two-fold structure in this embodiment, and this application will not go into details about this.

[0082] Figure 3 is a schematic diagram of a partial structure of the housing device 100 of the electronic device 1000 shown in Figure 1a in one embodiment. Figure 4 is a schematic diagram of the exploded structure of the housing device 100 shown in Figure 3 in one embodiment. Figure 5 is a schematic diagram of the structure of the first middle frame 11 of the housing device 100 shown in Figure 4.

[0083] As shown in Figures 3 to 5, the first middle frame 11 may include a main plate 11a, a first extension plate 11b, a second extension plate 11c, and a third extension plate 11d. The first extension plate 11b and the second extension plate 11c may be connected to the same side of the main plate 11a and located at both ends of the main plate 11a. The third extension plate 11d may be connected between the first extension plate 11b and the second extension plate 11c. The third extension plate 11d may also be connected to the main plate 11a. The third extension plate 11d may have a height difference with the main plate 11a in the thickness direction of the electronic device 1000. In this case, the main plate 11a, the first extension plate 11b, the second extension plate 11c, and the third extension plate 11d may collectively enclose a first mounting groove 111. When the electronic device 1000 is in the open state, the first extension plate 11b, the second extension plate 11c, and the third extension plate 11d may all be located on the side of the main plate 11a close to the second middle frame 21. It should be understood that although the first middle frame 11 is divided into four parts in this embodiment, it does not affect the fact that the first middle frame 11 can be an integrally formed structure, that is, the main plate 11a, the first extension plate 11b, the second extension plate 11c and the third extension plate 11d can be integrally formed.

[0084] Exemplarily, the first mounting groove 111 may include a first groove end wall 112, a second groove end wall 113, and a first groove side wall 116. The first groove end wall 112 may be formed on the surface of the first extension plate 11b facing the second extension plate 11c. The second groove end wall 113 may be formed on the surface of the second extension plate 11c facing the first extension plate 11b. The first groove side wall 116 may be formed on the surface of the main plate 11a facing the first extension plate 11b. In this case, the first groove end wall 112 may be disposed opposite the second groove end wall 113. The first groove side wall 116 may be connected between the first groove end wall 112 and the second groove end wall 113.

[0085] Exemplarily, at least a portion of the surface of the first slot end wall 112 facing the second slot end wall 113 may be recessed inward to form a first assembly slot 114. The first assembly slot 114 may be connected to the first installation slot 111. Specifically, the first assembly slot 114 may include a first slot wall 1141 and a second slot wall 1142. When the electronic device 1000 is in the open state, the first slot wall 1141 may face the second middle frame 21. The second slot wall 1142 may face the second slot end wall 113 of the first installation slot 111. The second slot wall 1142 may be provided with an installation groove 114a. The opening of the installation groove 114a may face the second slot end wall 113. Exemplarily, at least a portion of the surface of the second slot end wall 113 facing the first slot end wall 112 may be recessed inward to form a second assembly slot 115. The structure of the second assembly slot 115 is substantially the same as that of the first assembly slot 114 and will not be further described here.

[0086] It should be understood that the first groove wall 1141 may not be a complete wall surface. For example, the first groove wall 1141 may form multiple wall surfaces facing away from the main plate 11a due to some structural protrusions or depressions. In this way, multiple wall surfaces facing away from the main plate 11a can collectively constitute the first groove wall 1141. In other words, the wall surfaces in the first assembly groove 114 facing away from the main plate 11a (i.e., facing the second middle frame 21 when the electronic device 1000 is in the open state) can all constitute a portion of the first groove wall 1141.

[0087] Exemplarily, the second middle frame 21 may be provided with a second mounting groove 211. The second mounting groove 211 may include a first groove end wall 212 and a second groove end wall 213 arranged opposite to each other. The second mounting groove 211 may also include a first groove side wall 216 connected between the first groove end wall 212 and the second groove end wall 213. At least a portion of the surface of the first groove end wall 212 of the second mounting groove 211 facing the second groove end wall 213 may be recessed inward to form a third assembly groove 214. At least a portion of the surface of the second groove end wall 213 of the second mounting groove 211 facing the first groove end wall 212 may be recessed inward to form a fourth assembly groove 215. The third assembly groove 214 and the fourth assembly groove 215 may both be connected to the second mounting groove 211. The structures of the third assembly groove 214 and the fourth assembly groove 215 are substantially the same as those of the first assembly groove 114 and are not further described here.

[0088] Exemplarily, the materials of the first middle frame 11 and the second middle frame 21 can both be aluminum alloy.

[0089] FIG6 is a schematic structural diagram of the first reinforcing member 40a of the housing device 100 shown in FIG3 at different viewing angles in one embodiment.

[0090] As shown in Figure 6, the shell device 100 may also include at least one reinforcement member. The reinforcement member may be roughly block-shaped. The reinforcement member may be prepared by 3D printing, metal injection molding, etc. The material of the reinforcement member may be a titanium alloy material, an iron-based material, an aluminum-based material, a copper-based material, a nickel-based material, or other materials with higher strength. Among them, the yield strength of the reinforcement member may be greater than the yield strength of the first middle frame 11. The micro-Vickers hardness of the reinforcement member may be greater than the micro-Vickers hardness of the first middle frame 11. Exemplarily, the difference between the yield strength of the reinforcement member and the yield strength of the first middle frame 11 may be greater than 50 MPa, and / or the difference between the micro-Vickers hardness of the reinforcement member and the micro-Vickers hardness of the first middle frame 11 may be greater than 30HV.

[0091] In this embodiment, there can be four reinforcing members, all of which can be identical in shape and size. For example, they can include a first reinforcing member 40a, a second reinforcing member 40b, a third reinforcing member 40c, and a fourth reinforcing member 40d. The first reinforcing member 40a, the second reinforcing member 40b, the third reinforcing member 40c, and the fourth reinforcing member 40d can be fixed to the first mounting groove 114, the second mounting groove 115, the third mounting groove 214, and the fourth mounting groove 215 in a one-to-one correspondence (see FIG. 4 ). The following description will use the example of one first reinforcing member 40a being fixed to the first mounting groove 114 as an example.

[0092] For example, the circumferential side surface of the first reinforcing member 40a may include a first surface 41, a second surface 42, a third surface 43, and a fourth surface 44. The first surface 41 of the first reinforcing member 40a may be disposed opposite the third surface 43, and the second surface 42 of the first reinforcing member 40a may be disposed opposite the fourth surface 44. The first reinforcing member 40a may be provided with a mounting hole 45. The mounting hole 45 may extend through the second surface 42 and the fourth surface 44 of the first reinforcing member 40a. In some embodiments, the first surface 41 may be connected to the second surface 42. Alternatively, the first surface 41 may be connected to the second surface 42 via a transition surface (e.g., a curved surface).

[0093] In other embodiments, the shapes and sizes of the multiple reinforcement pieces may not be completely the same.

[0094] Figure 7a is a schematic diagram of a partial assembly structure of the first reinforcing member 40a, the fastener 50 and the first middle frame 11 of the housing device 100 shown in Figure 3. Figure 7b is a schematic diagram of a partial cross-sectional structure of the electronic device 1000 shown in Figure 1a taken along line AA in one embodiment.

[0095] As shown in Figures 7a and 7b, the housing device 100 may further include a fastener 50. The fastener 50 may sequentially penetrate the mounting hole 45 of the first reinforcement member 40a and the mounting groove 114a of the second slot wall 1142 to secure the first reinforcement member 40a to the first assembly slot 114. The centerline of the mounting hole 45 and the centerline of the mounting groove 114a may coincide. In this manner, a portion of the fastener 50 may be embedded in the first reinforcement member 40a, while another portion of the fastener 50 may be embedded in the second slot wall 1142, which helps ensure a secure connection between the first reinforcement member 40a and the first middle frame 11. In this embodiment, the fastener 50 may be a screw, rivet, or other cylindrical fastener. The diameter of the fastener 50 may be less than or equal to 1.2 mm. For example, the diameter of the fastener 50 may be 0.3 mm, 0.42 mm, 0.6 mm, 1 mm, etc. The number of fasteners 50 may be two. In other embodiments, the number of fasteners 50 may be one or more. This application does not impose any specific limitation on the number of fasteners 50 .

[0096] For example, a first angle α is formed between the centerline T1 of the mounting hole 45 and the bottom wall of the first mounting groove 111 facing the screen 200. This first angle α can be less than 90°. The opening of the mounting hole 45 can be disposed toward the screen 200. Thus, the mounting hole 45 can be tilted relative to the first mounting groove 111, toward the bottom wall of the screen 200. This facilitates the insertion of the fastener 50 into the mounting hole 45 and the mounting groove 114a, making it easier to secure the first reinforcement member 40a and improving assembly efficiency.

[0097] For example, a portion of the second surface 42 of the first reinforcing member 40a may be raised toward the second groove wall 1142 to form a boss 46. The second groove wall 1142 may also be partially recessed inward to form an accommodating space 114c for accommodating the boss 46 of the first reinforcing member 40a. In this way, the first reinforcing member 40a can be embedded in the second groove wall 1142 of the first assembly groove 114, increasing the contact area between the first reinforcing member 40a and the first middle frame 11, thereby improving the stability of the connection between the first reinforcing member 40a and the first middle frame 11.

[0098] In some embodiments, the first reinforcing member 40a may have two side-by-side mounting holes 45. The second slot wall 1142 may have two side-by-side mounting grooves 114a. The number of fasteners 50 may also be two. The two fasteners 50 may be respectively installed in the two mounting holes 45 and the two mounting grooves 114a. In this case, the two fasteners 50 may be arranged side by side.

[0099] In other embodiments, the two fasteners 50 can be fixed to the first reinforcing member 40a at adjacent locations of the two fasteners 50 by laser spot welding, thereby making the first reinforcing member 40a and the two fasteners 50 more securely fixed, thereby improving the structural stability of the entire housing device 100. Alternatively, glue can be filled into the installation groove 114a so that the glue can fully fill the gap between the fastener 50 and the installation groove 114a, thereby enhancing the connection reliability between the fastener 50 and the second groove wall 1142.

[0100] In other embodiments, the first reinforcing member 40a may not be provided with the mounting hole 45. The second slot wall 1142 may not be provided with the mounting groove 114a. In this case, the first reinforcing member 40a may be fixed to the second slot wall 1142 by bonding. In other words, the fastener 50 may also be adhesive.

[0101] In some other embodiments, the center line of the mounting hole 45 may also be parallel to the thickness direction of the electronic device 1000 .

[0102] FIG8 is a schematic structural diagram of the folding mechanism 30 of the housing device 100 shown in FIG3 .

[0103] As shown in FIG8 , the folding mechanism 30 may include a first connecting structure 31, a second connecting structure 32, and a hinge structure 33. The first connecting structure 31 and the second connecting structure 32 may be substantially symmetrical. Both the first connecting structure 31 and the second connecting structure 32 may be connected to the hinge structure 33. Both the first connecting structure 31 and the second connecting structure 32 may be movable relative to the hinge structure 33.

[0104] For example, the folding mechanism 30 may include a first end 301 and a second end 302 along its length. The first end 301 of the folding mechanism 30 may be provided with a first stop block 34. The first stop block 34 may include a first stop surface 341. When the electronic device 1000 is in the open state, the first stop surface 341 may be positioned toward the screen 200 (see FIG. 2 ). In some embodiments, when the electronic device 1000 is in the open state, the first stop surface 341 may be positioned parallel to the screen 200.

[0105] For example, the hinge structure 33 may include a first end 33a and a second end 33b disposed opposite each other along the length of the folding mechanism 30. The first stopper 34 may be located on a side of the first end 33a of the hinge structure 33 that is distal to the second end 33b and fixedly connected to the first end 33a. The first stopper 34 may be exposed relative to the hinge structure 33 in the thickness direction of the electronic device 1000. In some embodiments, the first stopper 34 may not be exposed relative to the hinge structure 33 in the thickness direction of the electronic device 1000.

[0106] For example, the second end 302 of the folding mechanism 30 may be provided with a second stop block 35. The first stop block 34 and the second stop block 35 may have substantially the same shape and size. The second stop block 35 may be located on a side of the second end 33b of the hinge structure 33 away from the first end 33a and fixedly connected to the second end 33b. The configuration of the second stop block 35 is substantially the same as that of the first stop block 34 and will not be further described here. In this case, the first end 33a of the hinge structure 33 and the first stop block 34 may constitute at least a portion of the first end 301 of the folding mechanism 30. The second end 33b of the hinge structure 33 and the second stop block 35 may constitute at least a portion of the second end 302.

[0107] In some embodiments, the shapes and sizes of the first stop block 34 and the second stop block 35 may not be completely the same. In other embodiments, the folding mechanism 30 may not include the second stop block 35.

[0108] In some other embodiments, the folding mechanism 30 may further include a first support plate (not shown) and a second support plate (not shown). The first support plate and the second support plate may have a substantially symmetrical structure. The first support plate may be located above the first connecting structure 31 and fixedly connected to the first connecting member. The projection of the first support plate in the thickness direction of the electronic device 1000 may overlap with the first connecting structure 31 and a portion of the hinge structure 33. The second support plate may be located above the second connecting structure 32 and fixedly connected to the second connecting structure 32. The projection of the second support plate in the thickness direction of the electronic device 1000 may overlap with the second connecting structure 32 and a portion of the hinge structure 33. In this way, the first support plate and the second support plate may cover any uneven areas on the upper surface of the first connecting structure 31, the upper surface of the second connecting structure 32, and the upper surface of the hinge structure 33 in the thickness direction of the electronic device 1000, thereby providing a relatively flat support environment for the screen 200 when the electronic device 1000 is in the open state.

[0109] Figure 9 is a schematic diagram of a partial cross-section of the electronic device 1000 shown in Figure 1a taken along line BB in one embodiment. Figure 10a is a schematic diagram of the partial assembly of the first middle frame 11 and the folding mechanism 30 shown in Figure 4. Figure 10b is a schematic diagram of the partial assembly of the first middle frame 11, the second middle frame 21, and the folding mechanism 30 shown in Figure 4. The first connecting structure 31, the second connecting structure 32, and the hinge structure 33 of the folding mechanism 30 are omitted in both Figures 10a and 10b, leaving only the first stop block 34 of the folding mechanism 30.

[0110] As shown in Figures 9 and 10b, at least a portion of the first connection structure 31 of the folding mechanism 30 can be located in the first mounting groove 111 and connected to the first middle frame 11. At least a portion of the second connection structure 32 of the folding mechanism 30 can be located in the second mounting groove 211 and connected to the second middle frame 21. For example, a portion of the hinge structure 33 of the folding mechanism 30 can be located in the first mounting groove 111, and a portion of the hinge structure 33 can be located in the second mounting groove 211.

[0111] For example, a portion of the first stop block 34 of the folding mechanism 30 may be located within the first assembly groove 114, and a portion of the first stop block 34 may be located within the third assembly groove 214. A portion of the second stop block 35 of the folding mechanism 30 may be located within the second assembly groove 115, and a portion of the second stop block 35 may be located within the fourth assembly groove 215 (see FIG. 3 ). In other words, the first assembly groove 114 and the third assembly groove 214 may be used to avoid at least a portion of the first stop block 34 in the folding mechanism 30. The second assembly groove 115 and the fourth assembly groove 215 may be used to avoid at least a portion of the second stop block 35 of the folding mechanism 30. In other embodiments, the first stop block 34 may not be located within the first assembly groove 114 and / or the third assembly groove 214.

[0112] When the electronic device 1000 is in the open state, the first middle frame 11 and the second middle frame 21 can be relatively flat. The first connecting structure 31 and the second connecting structure 32 of the folding mechanism 30 can be relatively flat. The direction from the first middle frame 11 to the second middle frame 21 can be a first direction. The first direction can be perpendicular to the length extension direction of the folding mechanism 30 and the thickness direction of the electronic device 1000. In this case, the first connecting structure 31 and the second connecting structure 32 can be located on opposite sides of the hinge structure 33. The first reinforcement member 40a can be located between the first slot wall 1141 of the first assembly slot 114 and the first stop block 34 of the folding mechanism 30 (that is, the first reinforcement member 40a can be located between the first slot side wall 116 of the first installation slot 111 and the first stop block 34). The third surface 43 of the first reinforcement member 40a can contact the first slot wall 1141 of the first assembly slot 114. The first surface 41 of the first reinforcement member 40a can be spaced apart from the first stop block 34 of the folding mechanism 30. The distance between the first surface 41 of the first reinforcing member 40a and the first stop block 34 of the folding mechanism 30 in the first direction can be less than or equal to 3 mm. In this case, the distance between the first reinforcing member 40a and the first stop block 34 of the folding mechanism 30 is relatively close.

[0113] In some embodiments, when the electronic device 1000 is in the open state, the width of the first stopping block 34 in the first direction may be smaller than the width of the hinge structure 33 .

[0114] In some other embodiments, the first reinforcing member 40 a may further contact the first stopping block 34 of the folding mechanism 30 .

[0115] Figure 11 is a schematic diagram of a partial cross-sectional structure of the electronic device 1000 shown in Figure 1b taken along line CC in one embodiment. Figure 12 is a schematic diagram of a partial cross-sectional structure of the electronic device 1000 shown in Figure 1b taken along line DD in one embodiment.

[0116] As shown in Figures 11 and 12, when the electronic device 1000 is in the closed state, the first middle frame 11 and the second middle frame 21 can be folded relative to each other. The first connecting structure 31 and the second connecting structure 32 of the folding mechanism 30 can be folded relative to each other. At this time, the space between the first middle frame 11 and the second middle frame 21, as well as the space between the first connecting structure 31 and the second connecting structure 32, can be used to accommodate the screen 200.

[0117] For example, the first connecting structure 31 and the second connecting structure 32 can be located on the same side of the hinge structure 33. The first reinforcing member 40a located in the first assembly groove 114 can be located between the first groove wall 1141 of the first assembly groove 114 and the first stop block 34 of the folding mechanism 30 (that is, the first reinforcing member 40a can be located between the first groove sidewall 116 of the first installation groove 111 and the first stop block 34). The third surface 43 of the first reinforcing member 40a can contact the first groove wall 1141 of the first assembly groove 114. The first surface 41 of the first reinforcing member 40a can contact the first stop surface 341 of the first stop block 34.

[0118] When the electronic device 1000 transitions from an open state to a closed state, the second middle frame 21 can fold relative to the first middle frame 11 until the first surface 41 of the first reinforcing member 40a abuts the first stop surface 341 of the first stop block 34. In other words, the first stop surface 341 of the first stop block 34 can be used to stop the electronic device 1000 during folding, thereby preventing the first and second middle frames 11 and 21 from over-folding and potentially damaging the screen 200.

[0119] It will be appreciated that in this embodiment, the first middle frame 11 has a first assembly groove 114 for assembling the first reinforcing member 40a. By arranging the first reinforcing member 40a within the first assembly groove 114, the first reinforcing member 40a can be positioned between the first groove wall 1141 of the first assembly groove 114 and the first stop block 34 of the folding mechanism 30. The yield strength of the first reinforcing member 40a can be greater than the yield strength of the first middle frame 11, and / or the micro-Vickers hardness of the first reinforcing member 40a can be greater than the micro-Vickers hardness of the first middle frame 11. In this way, when the electronic device 1000 falls, especially when the electronic device 1000 falls in a closed state, the first reinforcement member 40a can directly bear the impact force from the first stop block 34 of the hinge structure 33, thereby effectively avoiding the first stop block 34 of the hinge structure 33 from being subjected to a large impact force and violently colliding with the adjacent part of the first middle frame 11 (in this embodiment, the first groove wall 1141 of the first assembly groove 114), causing the first middle frame 11 to partially collapse and deform, which is beneficial to extending the service life of the electronic device 1000.

[0120] Secondly, compared with the traditional electronic device 1000, in which the first middle frame 11 is prepared by using high-strength materials to improve the yield strength and / or micro-Vickers hardness of the first middle frame 11, but the whole is prepared by using high-strength materials, which greatly increases the weight and manufacturing cost of the first middle frame 11, in this embodiment, only the first reinforcement 40a is set between the first groove wall 1141 of the first assembly groove 114 and the first stop block 34 of the folding mechanism 30, and the yield strength of the first reinforcement 40a is greater than the yield strength of the first middle frame 11, and / or the micro-Vickers hardness of the first reinforcement 40a is greater than the micro-Vickers hardness of the first middle frame 11, so there is no need to replace the entire material of the first middle frame 11 with a high-strength material, so that the overall weight of the first middle frame 11 is lighter, which is conducive to realizing the lightweight design of the electronic device 1000. At the same time, the preparation cost of the first middle frame 11 is low, which is conducive to reducing the manufacturing cost of the entire electronic device 1000.

[0121] In addition, in this embodiment, the yield strength of the first reinforcing member 40a can also be equal to the yield strength of the first stop block 34 of the folding mechanism 30, and / or the micro-Vickers hardness of the first reinforcing member 40a can also be equal to the micro-Vickers hardness of the first stop block 34. In this way, on the one hand, the yield strength of the first reinforcing member 40a is higher, so that the first reinforcing member 40a can better withstand the impact force from the first stop block 34 of the folding mechanism 30, and the first reinforcing member 40a has better impact resistance; on the other hand, the yield strength of the first reinforcing member 40a is equal to the yield strength of the first stop block 34 of the folding mechanism 30, so that even if the first reinforcing member 40a is impacted by the first stop block 34 of the folding mechanism 30, it is not easy to deform, which is conducive to extending the life of the first reinforcing member 40. a. At the same time, the yield strength of the first reinforcement 40a is greater than the yield strength of the first stop block 34 of the folding mechanism 30, and / or the micro-Vickers hardness of the first reinforcement 40a is greater than the micro-Vickers hardness of the first stop block 34, which will not cause the first stop block 34 of the folding mechanism 30 to collide with the first reinforcement 40a. The first stop block 34 itself will not undergo local collapse and deformation, which is beneficial to extending the service life of the folding mechanism 30, thereby helping to extend the service life of the entire electronic device 1000.

[0122] In addition, the housing device 100 in this embodiment may further include a fastener 50. The first reinforcing member 40a may further include a mounting hole 45. The second slot wall 1142 of the first assembly slot 114 may further include a mounting groove 114a. The fastener 50 may sequentially penetrate the mounting hole 45 of the first reinforcing member 40a and the mounting groove 114a of the second slot wall 1142 to secure the first reinforcing member 40a to the first assembly slot 114. In this manner, a portion of the fastener 50 may be embedded in the first reinforcing member 40a, while another portion of the fastener 50 may be embedded in the first middle frame 11. This not only improves the connection reliability between the first reinforcing member 40a and the first middle frame 11, but also, the portion of the fastener 50 embedded in the first middle frame 11 ensures that, when the first reinforcing member 40a is subjected to an impact force from the folding mechanism 30, a portion of the impact load can be transmitted to the first middle frame 11 through the fastener 50, allowing the first middle frame 11 to share some of the impact load, thereby improving the impact resistance of the first reinforcing member 40a.

[0123] In addition, when the electronic device 1000 is in the open state, the distance between the first reinforcement member 40a and the first stop block 34 of the folding mechanism 30 in the first direction can be less than or equal to 3 mm, that is, the first reinforcement member 40a can be arranged adjacent to the first stop block 34 of the folding mechanism 30. The first reinforcement member 40a has better impact resistance, which is beneficial to extending the service life of the electronic device 1000.

[0124] In some embodiments, please refer to Figure 10b and Figure 12 together, the first stop block 34 may further include a second stop surface 342. When the electronic device 1000 is in a closed state, the second stop surface 342 may be set away from the first reinforcement 40a. When the electronic device 1000 switches from a closed state to an open state, the second middle frame 21 may be opened relative to the first middle frame 11 until the first stop block 34 abuts against a portion of the surface of the first middle frame 11, and the first stop block 34 abuts against a portion of the surface of the second middle frame 21. That is, the second stop surface 342 of the first stop block 34 can be used to stop during the opening process of the electronic device 1000, thereby preventing the first middle frame 11 and the second middle frame 21 from being over-opened and damaging the screen 200.

[0125] Figure 13 is a schematic diagram of a partial cross-sectional structure of an embodiment of the electronic device 1000 shown in Figure 1b taken along line DD. Figure 14 is a schematic diagram of a partial cross-sectional structure of an embodiment of the electronic device 1000 shown in Figure 1a taken along line AA.

[0126] As shown in Figures 13 and 14 , the first reinforcing member 40a can also be partially trimmed or recessed on its circumferential side to create a relief space. For example, the portion of the third surface 43 near the screen 200 can be partially recessed to form a first relief space 431. This first relief space 431 allows the screen 200 to escape, preventing the first reinforcing member 40a from lifting the screen 200 and causing unevenness that would affect the user experience.

[0127] For example, the first reinforcing member 40a may be partially recessed on the fourth surface 44 near the first connecting structure 31 and / or hinge structure 33 of the folding mechanism 30 to form a second relief space 441. This second relief space 441 can be used to avoid the first connecting structure 31 and / or hinge structure 33 of the folding mechanism 30, making the overall structure of the electronic device 1000 more compact. It should be understood that the shape of the first reinforcing member 40a in this embodiment can adapt to the shapes of other adjacent components. In other words, the first reinforcing member 40a may have a variety of shapes, which is not strictly limited in this application.

[0128] FIG15 is a schematic diagram of a partial cross-sectional structure of the electronic device shown in FIG1a cut along EE in one embodiment.

[0129] As shown in Figure 15 , the second surface 42 of the first reinforcing member 40a may further be provided with a limiting protrusion 47 (Figure 6 also illustrates the limiting protrusion 47 from another perspective). The limiting protrusion 47 may be spaced apart from the mounting hole 45. The second groove wall 1142 of the first assembly groove 114 may further be provided with a mating groove 114b. The shape of the limiting protrusion 47 may be compatible with the shape of the mating groove 114b. The limiting protrusion 47 may be embedded in the mating groove 114b. The limiting protrusion 47 may be generally cylindrical. In this manner, the limiting protrusion 47 can cooperate with the fastener 50 to enhance the connection stability between the first reinforcing member 40a and the first assembly groove 114. Furthermore, when the first reinforcing member 40a is subjected to an impact force from the folding mechanism 30, the limiting protrusion 47 can also share some of the impact load, allowing the first reinforcing member 40a to withstand greater impact force, thereby improving the impact resistance of the first reinforcing member 40a.

[0130] Figure 16 is a schematic diagram of the structure of the first reinforcing member 40a shown in Figure 6 in another embodiment. Figure 17 is a schematic diagram of the structure of the structure shown in Figure 7b in another embodiment.

[0131] As shown in Figures 16 and 17, the structure of the first reinforcing member 40a in this embodiment is roughly the same as the structure of the first reinforcing member 40a shown in Figure 6, and the identical parts will not be repeated. The following will mainly introduce the differences between the two. The length extension direction of the limiting protrusion 47 of the first reinforcing member 40a in this embodiment can intersect with the first direction. The angle between the two can be a second angle β. The angle of the second angle β can be less than 90°. The opening of the second angle β can face the first groove wall 1141 of the first assembly groove 114, that is, the opening of the second angle β can face the third surface 43 of the first reinforcing member 40a.

[0132] It will be appreciated that in this embodiment, a limiting protrusion 47 is provided on the surface of the first reinforcing member 40a facing the first assembly groove 114 (in this embodiment, the second surface 42 of the first reinforcing member 40a). The limiting protrusion 47 may form a second angle β less than 90° between its longitudinal extension direction and the first direction, and its opening at the second angle β may face the first groove wall 1141 of the first assembly groove 114, that is, the opening at the second angle β may face the third surface 43 of the first reinforcing member 40a. In this way, when the first reinforcing member 40a is subjected to an impact force from the folding mechanism 30, the limiting protrusion 47 may share some of the impact load, allowing the first reinforcing member 40a to withstand greater impact force, thereby improving the impact resistance of the first reinforcing member 40a.

[0133] In some embodiments, glue can also be dispensed into the mating groove 114b of the first assembly groove 114 so that the limiting protrusion 47 of the first reinforcement member 40a can be more firmly embedded in the mating groove 114b of the first assembly groove 114, which is beneficial to improving the connection reliability between the first reinforcement member 40a and the first middle frame 11.

[0134] Figure 18 is a schematic diagram of the structure of the first reinforcing member 40a shown in Figure 6 at a different viewing angle in yet another embodiment. Figure 19 is a schematic diagram of the structure shown in Figure 7b at another viewing angle in yet another embodiment.

[0135] As shown in Figures 18 and 19, the structure of the first reinforcing member 40a in this embodiment is substantially the same as that of the first reinforcing member 40a shown in Figure 6, and the common parts will not be repeated. The differences between the two will be mainly described below. The first reinforcing member 40a in this embodiment may not be provided with a mounting hole. The second surface 42 may also be provided with at least one connecting protrusion 48. The shape of the mounting groove 114a of the first assembly groove 114 may be compatible with the shape of the connecting protrusion 48. The number of mounting grooves 114a may be equal to the number of connecting protrusions 48. In this case, the first reinforcing member 40a can be embedded and fixed in the second groove wall 1142 of the first assembly groove 114 through the engagement between the connecting protrusion 48 and the mounting groove 114a. The connecting protrusion 48 may constitute the fastener 50 of the housing device 100. For example, the length extension directions of the multiple connecting protrusions 48 may intersect.

[0136] It will be appreciated that in this embodiment, a connecting protrusion 48 is formed on the surface of the first reinforcing member 40a facing the second groove wall 1142 of the first assembly groove 114 (i.e., the second surface 42 of the first reinforcing member 40a in this embodiment). The connecting protrusion 48 cooperates with the mounting groove 114a to secure the first reinforcing member 40a to the second groove wall 1142. This replaces the need for additional fasteners 50 (e.g., screws) to secure the first reinforcing member 40a to the second groove wall 1142. This eliminates the need for additional fasteners in the housing device 100, thus reducing the overall manufacturing cost of the electronic device 1000. Furthermore, in this embodiment, the connecting protrusion 48 is formed directly on the surface of the first reinforcing member 40a. The two can be integrally formed, simplifying the manufacturing process. Furthermore, the smaller size of the two can better accommodate electronic devices 1000 with thinner walls of the first middle frame 11, thus increasing their applicability.

[0137] FIG20 is a schematic diagram of a partial structure of the structure shown in FIG10a in another embodiment.

[0138] As shown in Figure 20, the structure of the electronic device 1000 in this embodiment is roughly the same as the structure of the electronic device 1000 shown in Figure 10a, and the identical parts will not be repeated. The differences between the two will be introduced below. In this embodiment, the first groove end wall 112 of the first mounting groove 111 of the first middle frame 11 may also not be provided with a first assembly groove. The first reinforcement member 40a may also be directly fixed to the first groove end wall 112 of the first mounting groove 111. At this time, the first reinforcement member 40a may be located between the first groove side wall 116 of the first mounting groove 111 and the first stop block 34.

[0139] It should be noted that, in the absence of conflict, the features in the embodiments of this application can be combined with each other, and any combination of features in different embodiments is also within the scope of protection of this application. That is to say, the multiple embodiments described above can also be arbitrarily combined according to actual needs.

[0140] It should be noted that all the above drawings are for illustrative purposes only and do not represent the actual size of the product. Furthermore, the dimensional ratios between the components in the drawings are not intended to limit the actual product of the present application.

[0141] The above are only some of the embodiments of this application, and the scope of protection of this application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A foldable electronic device (1000), characterized in that: The invention comprises a screen (200), a first middle frame (11), a folding mechanism (30), a second middle frame (21), and a first reinforcing member (40a), wherein the screen (200) is mounted on the first middle frame (11) and the second middle frame (21), the folding mechanism (30) connects the first middle frame (11) and the second middle frame (21), and the first middle frame (11) and the second middle frame (21) are relatively unfolded or folded to drive the screen (200) to be relatively unfolded or folded; A first installation groove (111) is provided on a side of the first middle frame (11) close to the second middle frame (21); the first installation groove (111) comprises a first groove end wall (112), a second groove end wall (113) and a first groove side wall (116); the first groove end wall (112) and the second groove end wall (113) are arranged opposite to each other; the first groove side wall (116) is connected between the first groove end wall (112) and the second groove end wall (113); the first reinforcing piece (40a) is located on a side of the first groove end wall (112) facing the second groove end wall (113) and is fixed to the first groove end wall (112); a part of the folding mechanism (30) is located in the first installation groove (111); the length extension direction of the folding mechanism (30) comprises a first end portion (301) and a second end portion (302) arranged opposite to each other; the first end portion (301) is provided with a first stop block (34); The electronic device (1000) has an open state and a closed state. When the electronic device (1000) is in the open state, the first middle frame (11) and the second middle frame (21) are relatively flattened, the first groove side wall (116) of the first installation groove (111) faces the second middle frame (21), and the first reinforcing piece (40a) is located between the first groove side wall (116) and the first stop block (34) of the folding mechanism (30); When the electronic device (1000) is in the closed state, the first middle frame (11) and the second middle frame (21) are folded relative to each other, and the first reinforcing piece (40a) is located between the first groove side wall (116) and the first stop block (34), and abuts against the first stop block (34); The yield strength of the first reinforcing piece (40a) is greater than the yield strength of the first middle frame (11), and / or the micro-Vickers hardness of the first reinforcing piece (40a) is greater than the micro-Vickers hardness of the first middle frame (11).

2. The electronic device (1000) according to claim 1, characterized in that: The first groove end wall (112) is provided with a first assembly groove (114), the first reinforcing member (40a) is fixed to the first assembly groove (114), and is at least partially located in the first assembly groove (114); When the electronic device (1000) is in the open state, the first middle frame (11) and the second middle frame (21) are relatively flattened, the first groove wall (1141) of the first assembly groove (114) faces the second middle frame (21), and the first reinforcing member (40a) is located between the first groove wall (1141) of the first assembly groove (114) and the first stop block (34) of the folding mechanism (30); When the electronic device (1000) is in the closed state, the first middle frame (11) and the second middle frame (21) are folded relative to each other, and the first reinforcing piece (40a) is located between the first groove wall (1141) and the first stop block (34), and abuts against the first stop block (34).

3. The electronic device (1000) according to claim 2, characterized in that: The first reinforcing piece (40a) comprises a first surface (41) disposed away from the first groove side wall (116); the first stop block (34) comprises a first stop surface (341); when the electronic device (1000) is in the open state, the first stop surface (341) is disposed toward the screen (200); When the electronic device (1000) switches from the open state to the closed state, the first middle frame (11) is folded relative to the second middle frame (21) until the first surface (41) of the first reinforcing member (40a) abuts against the first stop surface (341) of the first stop block (34).

4. The electronic device (1000) according to claim 2 or 3, characterized in that: When the electronic device (1000) is in the open state, the direction in which the first middle frame (11) points to the second middle frame (21) is a first direction, and in the first direction, the distance between the first reinforcing piece (40a) and the first stop block (34) of the folding mechanism (30) is less than or equal to 3 millimeters.

5. The electronic device (1000) according to any one of claims 2 to 4, characterized in that: The first assembly groove (114) further comprises a second groove wall (1142), wherein the second groove wall (1142) faces the first installation groove (111), and the electronic device (1000) further comprises a fastener (50), wherein the fastener (50) fixes the first reinforcement member (40a) to the second groove wall (1142).

6. The electronic device (1000) according to claim 5, characterized in that: The first reinforcing member (40a) is provided with a mounting hole (45), the second groove wall (1142) is provided with a mounting groove (114a), the mounting hole (45) is connected to the mounting groove (114a), a portion of the fastener (50) is located in the mounting hole (45), and another portion of the fastener (50) is located in the mounting groove (114a).

7. The electronic device (1000) according to claim 6, characterized in that: A first angle (α) is formed between the center line of the mounting hole (45) and the bottom wall of the first mounting groove (111), the first angle (α) being less than 90°, and the opening of the mounting hole (45) faces the screen (200).

8. The electronic device (1000) according to claim 6 or 7, characterized in that: The first reinforcing member (40a) is provided with a limiting protrusion (47), and the limiting protrusion (47) is spaced apart from the mounting hole (45); the second groove wall (1142) is further provided with a matching groove (114b), and the matching groove (114b) is spaced apart from the mounting groove (114a); the limiting protrusion (47) is embedded in the matching groove (114b).

9. The electronic device (1000) according to claim 8, characterized in that: A second angle (β) is formed between the center line of the limiting protrusion (47) and the first direction, the angle of the second angle (β) is less than 90°, the opening of the second angle (β) faces the first groove wall (1141), and the first direction is the direction in which the first middle frame (11) points to the second middle frame (21) when the electronic device (1000) is in the open state.

10. The electronic device (1000) according to any one of claims 2 to 4, characterized in that: The first assembly groove (114) further comprises a second groove wall (1142), the second groove wall (1142) faces the first installation groove (111), a connection protrusion (48) is provided on the surface of the first reinforcement member (40a) facing the second groove wall (1142), the second groove wall (1142) is provided with a mounting groove (114a), and the connection protrusion (48) is embedded in the mounting groove (114a) to fix the first reinforcement member (40a) to the second groove wall (1142).

11. The electronic device (1000) according to any one of claims 1 to 10, characterized in that: The folding mechanism (30) comprises a first connecting structure (31), a second connecting structure (32) and a hinge structure (33); the hinge structure (33) connects the first connecting structure (31) and the second connecting structure (32); at least a portion of the first connecting structure (31) is located in the first mounting groove (111) and is connected to the first middle frame (11); a second mounting groove (211) is provided on a side of the second middle frame (21) close to the first middle frame (11); at least a portion of the second connecting structure (32) is located in the second mounting groove (211) and is connected to the second middle frame (21); In the length extension direction of the folding mechanism (30), the hinge structure (33) includes a first end (33a) and a second end (33b) that are arranged opposite to each other, and the first stop block (34) is located on a side of the first end (33a) away from the second end (33b) and is fixedly connected to the first end (33a).

12. The electronic device (1000) according to claim 11, characterized in that: When the electronic device (1000) is in the open state, the direction from the first middle frame (11) to the second middle frame (21) is a first direction, and in the first direction, the width of the first stop block (34) is smaller than the width of the hinge structure (33).

13. The electronic device (1000) according to any one of claims 1 to 12, characterized in that: The difference between the yield strength of the first reinforcing piece (40a) and the yield strength of the first middle frame (11) is greater than 50 MPa, and / or the difference between the micro-Vickers hardness of the first reinforcing piece (40a) and the micro-Vickers hardness of the first middle frame (11) is greater than 30 HV.

14. The electronic device (1000) according to any one of claims 1 to 13, characterized in that: The yield strength of the first reinforcing member (40a) is less than or equal to the yield strength of the first stop block (34) of the folding mechanism (30), and / or the micro-Vickers hardness of the first reinforcing member (40a) is less than or equal to the micro-Vickers hardness of the first stop block (34) of the folding mechanism (30).

15. The electronic device (1000) according to any one of claims 1 to 14, characterized in that: The material of the first reinforcing member (40a) is a titanium alloy material, an iron-based material, an aluminum-based material, a copper-based material or a nickel-based material.

16. The electronic device (1000) according to any one of claims 1 to 15, characterized in that: The first middle frame (11) comprises a main body plate (11a), a first extension plate (11b), a second extension plate (11c) and a third extension plate (11d); The first extension plate (11b) and the second extension plate (11c) are connected to the same side of the main body plate (11a) and are respectively located at two ends of the main body plate (11a); the third extension plate (11d) is connected between the first extension plate (11b) and the second extension plate (11c); the third extension plate (11d) is also connected to the main body plate (11a) and has a height difference with the main body plate (11a) in the thickness direction of the first middle frame (11); the main body plate (11a), the first extension plate (11b), the second extension plate (11c) and the third extension plate (11d) are connected to the main body plate (11a) and the third extension plate (11d) are connected to the main body plate (11a) and the third extension plate (11c) are connected to the main body plate (11a ... The three extension plates (11d) surround the first installation groove (111), the surface of the first extension plate (11b) facing the second extension plate (11c) constitutes the first groove end wall (112), and the surface of the main body plate (11a) facing the first extension plate (11b) constitutes the first groove side wall (116).

17. A housing device (100), characterized in that: The housing device (100) comprises a first middle frame (11), a folding mechanism (30), a second middle frame (21), and a first reinforcing member (40a); the folding mechanism (30) connects the first middle frame (11) and the second middle frame (21); the first middle frame (11) and the second middle frame (21) are relatively unfolded or folded, so that the housing device (100) is relatively opened or closed; A first installation groove (111) is provided on a side of the first middle frame (11) close to the second middle frame (21); the first installation groove (111) comprises a first groove end wall (112), a second groove end wall (113) and a first groove side wall (116); the first groove end wall (112) and the second groove end wall (113) are arranged opposite to each other; the first groove side wall (116) is connected between the first groove end wall (112) and the second groove end wall (113); the first reinforcing piece (40a) is located on a side of the first groove end wall (112) facing the second groove end wall (113) and is fixed to the first groove end wall (112); a part of the folding mechanism (30) is located in the first installation groove (111); the length extension direction of the folding mechanism (30) comprises a first end portion (301) and a second end portion (302) arranged opposite to each other; the first end portion (301) is provided with a first stop block (34); The housing device (100) comprises an open state and a closed state. When the housing device (100) is in the open state, the first middle frame (11) and the second middle frame (21) are relatively flattened, the first groove side wall (116) of the first installation groove (111) faces the second middle frame (21), and the first reinforcing member (40a) is located between the first groove side wall (116) and the first stop block (34) of the folding mechanism (30); When the housing device (100) is in the closed state, the first middle frame (11) and the second middle frame (21) are folded relative to each other, and the first reinforcing member (40a) is located between the first groove side wall (116) and the first stop block (34), and abuts against the first stop block (34); The yield strength of the first reinforcing piece (40a) is greater than the yield strength of the first middle frame (11), and / or the micro-Vickers hardness of the first reinforcing piece (40a) is greater than the micro-Vickers hardness of the first middle frame (11).

18. The housing device (100) according to claim 17, characterized in that The first groove end wall (112) is provided with a first assembly groove (114), the first reinforcing member (40a) is fixed to the first assembly groove (114), and is at least partially located in the first assembly groove (114); When the housing device (100) is in the open state, the first middle frame (11) and the second middle frame (21) are relatively flattened, the first groove wall (1141) of the first assembly groove (114) faces the second middle frame (21), and the first reinforcing member (40a) is located between the first groove wall (1141) of the first assembly groove (114) and the first stop block (34) of the folding mechanism (30); When the shell device (100) is in the closed state, the first middle frame (11) and the second middle frame (21) are folded relative to each other, and the first reinforcing member (40a) is located between the first groove wall (1141) and the first stop block (34), and abuts against the first stop block (34).

19. The housing device (100) according to claim 18, characterized in that: The side of the shell device (100) used for installing the screen (200) is the installation side (100a) of the shell device (100); the first reinforcing piece (40a) includes a first surface (41) arranged away from the first groove wall (1141); the first stop block (34) includes a first stop surface (341); when the shell device (100) is in the open state, the first stop surface (341) is arranged toward the installation side (100a); when the shell device (100) switches from the open state to the closed state, the first middle frame (11) is folded relative to the second middle frame (21) until the first surface (41) of the first reinforcing piece (40a) abuts against the first stop surface (341) of the first stop block (34).

20. The housing device (100) according to claim 18 or 19, characterized in that: When the shell device (100) is in the open state, the direction in which the first middle frame (11) points to the second middle frame (21) is a first direction, and in the first direction, the distance between the first reinforcement piece (40a) and the first stop block (34) of the folding mechanism (30) is less than or equal to 3 mm.

21. The housing device (100) according to any one of claims 18 to 20, characterized in that: The first assembly groove (114) further includes a second groove wall (1142), wherein the second groove wall (1142) faces the first installation groove (111), and the housing device (100) further includes a fastener (50), wherein the fastener (50) fixes the first reinforcement member (40a) to the second groove wall (1142).

22. The housing device (100) according to claim 21, characterized in that The first reinforcing member (40a) is provided with a mounting hole (45), the second groove wall (1142) is provided with a mounting groove (114a), the mounting hole (45) is connected to the mounting groove (114a), a portion of the fastener (50) is located in the mounting hole (45), and another portion of the fastener (50) is located in the mounting groove (114a).

23. The housing device (100) according to claim 22, characterized in that A first angle (α) is formed between the center line of the mounting hole (45) and the bottom wall of the first mounting groove (111), the first angle (α) being less than 90°, and the opening of the mounting hole (45) faces the mounting side (100a).

24. The housing device (100) according to any one of claims 18 to 23, characterized in that: The difference between the yield strength of the first reinforcing piece (40a) and the yield strength of the first middle frame (11) is greater than 50 MPa, and / or the difference between the micro-Vickers hardness of the first reinforcing piece (40a) and the micro-Vickers hardness of the first middle frame (11) is greater than 30 HV.

25. The housing device (100) according to any one of claims 18 to 23, characterized in that: The yield strength of the first reinforcing member (40a) is less than or equal to the yield strength of the first stop block (34) of the folding mechanism (30), and / or the micro-Vickers hardness of the first reinforcing member (40a) is less than or equal to the micro-Vickers hardness of the first stop block (34) of the folding mechanism (30).

26. The housing device (100) according to any one of claims 18 to 25, characterized in that: The material of the first reinforcing member (40a) is a titanium alloy material, an iron-based material, an aluminum-based material, a copper-based material or a nickel-based material.

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