Foldable electronic device, and bending structure

Abstract

The present application provides a foldable electronic device and a bending structure. The foldable electronic device comprises a flexible circuit board, a rotating shaft mechanism, a first middle frame, and a second middle frame. The flexible circuit board can pass through the rotating shaft mechanism in a first direction, so that a part of the flexible circuit board is located in the rotating shaft mechanism. The first middle frame and the second middle frame are respectively located on two sides of the rotating shaft mechanism in the first direction, and the first middle frame and the second middle frame are separately rotatably connected to the rotating shaft mechanism. In the present application, by means of changing a matching relationship between the first middle frame and a first press-fit support, after the thickness of the first middle frame is reduced to a certain height, the first middle frame is provided with a step structure, thereby facilitating a first connecting portion of the first press-fit support to overlap with the first middle frame, reducing the thickness dimension of the foldable electronic device in a second direction, and further achieving a trend toward a reduced overall thickness of the foldable electronic device.

Description

Foldable electronic devices and bending structures

[0001] This application claims priority to Chinese Patent Application No. 202422783149.3, filed on November 13, 2024, entitled "Foldable Electronic Device and Bending Structure", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of terminal technology, and in particular to a foldable electronic device and a bending structure. Background Technology

[0003] With the continuous development of electronic technology, computers, mobile phones, and other electronic devices have become indispensable communication tools in people's lives. Electronic devices are ubiquitous and have greatly improved people's living standards. As user demands continue to rise, the performance requirements for electronic devices are also increasing, with higher demands being placed on the thinness and miniaturization of foldable electronic devices. How to maintain the basic bending shape of flexible circuit boards to achieve the electrical connection between the printed circuit board and the battery has become a crucial area of ​​research.

[0004] As foldable electronic devices become increasingly thinner, the space for flexible circuit boards to pass through the hinge is significantly reduced in order to maintain the battery specifications. In conventional foldable electronic devices, the way the flexible circuit board is fixed may reduce the bending angle of the flexible circuit board through the hinge, affecting the hinge shape and bending life of the flexible circuit board, and consequently affecting the waterproofing of the hinge area and the reliability of signal bending in foldable electronic devices. Summary of the Invention

[0005] This application provides a foldable electronic device and a bending structure. By changing the fit between the first middle frame and the first pressing bracket, the thickness of the first middle frame is reduced to a certain height, so that the first middle frame has a stepped structure. This facilitates the first connecting part of the first pressing bracket to overlap with the first middle frame, thereby reducing the thickness of the foldable electronic device in the second direction and further realizing the trend of reducing the overall thickness of the foldable electronic device.

[0006] The first aspect of this application provides a foldable electronic device, comprising:

[0007] A flexible circuit board having a first end and a second end;

[0008] A rotating shaft mechanism, wherein a flexible circuit board is inserted through the rotating shaft mechanism along a first direction;

[0009] A first middle frame has a first side and a second side along a second direction. A first opening is provided on the first middle frame, through which the first end of the flexible circuit board can pass and penetrate the first side and the second side.

[0010] The second middle frame, the first middle frame and the second middle frame are respectively located on both sides of the rotating shaft mechanism and are rotatably connected to the rotating shaft mechanism;

[0011] The first display screen is located on one side of the first middle frame, the second middle frame and the pivot mechanism and is connected to the first middle frame, the second middle frame and the pivot mechanism. The first side of the first middle frame faces the first display screen.

[0012] The first pressing bracket is located at the first opening, and one end of the first pressing bracket has a first connecting part. The first connecting part is located on the first side of the first middle frame and connected to the first side of the first middle frame. The other end of the first pressing bracket is engaged with the first middle frame and pressed onto the flexible circuit board.

[0013] The foldable electronic device provided in this application includes a flexible circuit board, a hinge mechanism, a first middle frame, and a second middle frame. The flexible circuit board can pass through the hinge mechanism along a first direction, such that a portion of the flexible circuit board is located within the hinge mechanism. The first and second middle frames are located on opposite sides of the hinge mechanism in the first direction, and are rotatably connected to the hinge mechanism. By changing the fit between the first middle frame and the first pressing bracket, this application reduces the thickness of the first middle frame to a certain height, giving it a stepped structure. This facilitates the overlap between the first connecting portion of the first pressing bracket and the first middle frame, reducing the thickness of the foldable electronic device in the second direction and further achieving the overall thickness reduction trend of the foldable electronic device.

[0014] In one possible implementation, a groove is provided on the first side of the first middle frame and at a position facing the first connecting portion, and at least a portion of the first connecting portion is located in the groove and overlaps with the bottom of the groove.

[0015] The first connecting part and the groove cooperate to connect the first connecting part and the first side of the first middle frame. The thickness of the first middle frame is reduced in the second direction, and the first connecting part overlaps with the bottom of the groove to achieve a misalignment design between the first side of the first middle frame and the first connecting part, thereby reducing the overall thickness of the machine.

[0016] In one possible implementation, the first middle frame has a first overlapping portion near the first opening, the first overlapping portion extends along a third direction, and a groove is formed on the side of the first overlapping portion facing the first display screen. The first connecting portion of the first pressing bracket is located on the side of the first overlapping portion facing the first display screen, and the first connecting portion and the first overlapping portion overlap and connect in a second direction.

[0017] By setting a first overlapping part, a groove is provided on the side of the first overlapping part facing the first display screen, so that the first overlapping part and the groove form a stepped structure, thereby facilitating the first connecting part of the first pressing bracket to overlap with the first overlapping part.

[0018] In one possible implementation, the first pressing bracket also has a second connecting portion;

[0019] The first middle frame has a second overlapping portion at the first opening, and there is a first channel between the second connecting portion and the second overlapping portion for the first end of the flexible circuit board to pass through. The flexible circuit board passes through the first channel and is sealed and connected to the second connecting portion and the second overlapping portion.

[0020] By setting a second connecting part, a first channel, and a second overlapping part, one side of the flexible circuit board is sealed to the second connecting part, and the other side of the flexible circuit board is sealed to the second overlapping part, thus further improving its waterproof performance.

[0021] In one possible implementation, the second overlapping portion has a first arcuate recess on the side facing the second connecting portion, and the second connecting portion has a first arcuate convex surface protruding towards the first arcuate recess;

[0022] A first arc-shaped channel is formed between the first arc-shaped convex surface and the first arc-shaped concave portion.

[0023] By setting a first arc-shaped convex surface and a first arc-shaped concave portion, an arc-shaped first channel is formed between the first arc-shaped convex surface and the first arc-shaped concave portion. The first end of the flexible circuit board passes through the arc-shaped first channel, which facilitates the bending of the flexible circuit board and enhances the bending reliability of the flexible circuit board.

[0024] In one possible implementation, there is a first redundant space between the second connecting portion and the second overlapping portion, which allows the flexible circuit board to be bent. The first redundant space is connected to the first channel and is close to the rotating shaft mechanism. The flexible circuit board is bent in a W shape and disposed in the first redundant space and the first channel.

[0025] By setting a first redundant space, the problem of distortion and noise when the flexible circuit board is bent can be avoided, thereby ensuring that the flexible circuit board can be bent within the space defined by the first middle frame and the first pressing bracket.

[0026] In one possible implementation, it further includes: a first sealant layer, wherein the first overlap portion and the first connecting portion of the first pressing bracket are sealed together by the first sealant layer.

[0027] By providing a first sealing layer between the first overlapping portion and the first connecting portion of the first pressing bracket, a certain degree of waterproofing is achieved.

[0028] In one possible implementation, in the second direction, the side of the first sealant layer facing the second side of the first middle frame is lower than the surface of the first overlap located on the second side of the first middle frame.

[0029] By setting the side of the first sealant layer facing the second side of the first middle frame to be lower than the surface of the first overlap portion located on the second side of the first middle frame, the thickness of the first sealant layer in the second direction is thinner and will not protrude from the surface of the first overlap portion located on the second side of the first middle frame, thus avoiding the first sealant layer from affecting other components located on the second side of the first middle frame.

[0030] In one possible implementation, a second display screen is also included, which is located on a second side of the first middle frame and is connected to the first middle frame.

[0031] By setting up a second display screen and combining it with the position of the first sealant layer between the first overlap and the first connection, the problem of light and shadow appearing on the second display screen is avoided if the thickness of the first sealant layer is too thick.

[0032] In one possible implementation, it further includes: a first seal and a second seal, the first seal and the second seal being located within the first channel and away from the rotating shaft mechanism;

[0033] The first seal is located between the first arc-shaped convex surface and the flexible circuit board to seal and connect the first arc-shaped convex surface and the flexible circuit board.

[0034] The second seal is located between the first arc-shaped recess and the flexible circuit board to seal the connection between the first arc-shaped recess and the flexible circuit board.

[0035] By setting a first seal and a second seal in the first channel and cooperating with the flexible circuit board, the waterproof performance of the whole machine is further enhanced, preventing liquid from entering the first channel and thus corroding the circuit.

[0036] In one possible implementation, it further includes: a second pressing bracket;

[0037] A second opening is provided on the second middle frame, allowing the second end of the flexible circuit board to pass through;

[0038] The second pressing bracket is located at the second opening, and the second pressing bracket is sealed to the edge of the second middle frame at the second opening.

[0039] By setting a second pressing bracket, the second end of the flexible circuit board can be limited. The second pressing bracket is sealed to the edge of the second middle frame at the second opening, thereby giving the whole machine a better waterproof function.

[0040] In one possible implementation, one end of the second pressing bracket has a third connecting portion, and the second middle frame has a third overlapping portion at the second opening;

[0041] The third connecting part is located on the side of the third overlapping part facing the first display screen and is sealed and connected to the third overlapping part;

[0042] Alternatively, the third connecting part is located on the side of the third overlapping part facing away from the first display screen and is sealed to the third overlapping part.

[0043] By setting a third connecting part and a third overlapping part, a groove is provided on the side of the third overlapping part facing the first display screen, so that the third overlapping part and the groove form a stepped structure, thereby facilitating the overlap of the third connecting part and the third overlapping part of the second pressing bracket.

[0044] In one possible implementation, a second sealant layer is also included, which is located between the third connection portion and the third overlap portion.

[0045] By setting a second sealant layer between the third connection part and the third overlap part, a certain degree of waterproofing is achieved.

[0046] In one possible implementation, the second middle frame has a fourth overlapping portion at the second opening, and the second pressing bracket has a fourth connecting portion.

[0047] There is a second channel between the fourth connecting part and the fourth overlapping part, through which the second end of the flexible circuit board can pass. The flexible circuit board passes through the second channel and is sealed and connected to the fourth connecting part and the fourth overlapping part.

[0048] By setting the fourth connecting part, the second channel, and the fourth overlapping part, one side of the flexible circuit board is sealed to the fourth connecting part, and the other side of the flexible circuit board is sealed to the fourth overlapping part, thus further improving its waterproof performance.

[0049] In one possible implementation, the fourth overlapping portion has a second arcuate recess on the side facing the fourth connecting portion, and the fourth connecting portion has a second arcuate convex surface protruding towards the second arcuate recess;

[0050] A second arc-shaped channel is formed between the second arc-shaped convex surface and the second arc-shaped concave part.

[0051] By providing a second arc-shaped convex surface and a second arc-shaped concave portion, an arc-shaped second channel is formed between the two surfaces. The second end of the flexible circuit board passes through this arc-shaped second channel, facilitating bending and enhancing its bending reliability.

[0052] In one possible implementation, it further includes: a third seal and a fourth seal, the third seal and the fourth seal being located within the second channel and away from the rotating shaft mechanism;

[0053] The third seal is located between the second arc-shaped convex surface and the flexible circuit board to seal the connection between the second arc-shaped convex surface and the flexible circuit board.

[0054] The fourth seal is located between the second arc-shaped recess and the flexible circuit board to seal the connection between the second arc-shaped recess and the flexible circuit board.

[0055] By installing a third and fourth seal within the second channel and cooperating with the flexible circuit board, the overall waterproof performance is further enhanced, preventing liquid from entering the second channel and corroding the circuit.

[0056] In one possible implementation, there is a second redundant space between the fourth connecting portion and the fourth overlapping portion, which allows the flexible circuit board to be bent. The second redundant space is connected to the second channel and is close to the rotating shaft mechanism. The flexible circuit board is bent in a W shape and disposed in the second redundant space and the second channel.

[0057] By setting a second redundant space, the problem of distortion noise when the flexible circuit board is bent can be avoided, thereby ensuring that the flexible circuit board can be bent within the space defined by the second middle frame and the second pressing bracket.

[0058] In one possible implementation, it further includes: a battery cover;

[0059] The battery cover is located on the side of the second middle frame facing away from the first display screen, and the battery cover is connected to the second middle frame.

[0060] By setting a battery cover, the battery cover and the second display screen are respectively located at opposite ends of the rotating mechanism in the first direction, giving the whole machine a good appearance.

[0061] In one possible implementation, it further includes: a first reinforcing part;

[0062] The first reinforcing part is located on at least one side of the first end of the flexible circuit board. The first reinforcing part is located between the flexible circuit board and the first pressing bracket, and both sides of the first reinforcing part are respectively sealed and connected to the flexible circuit board and the first pressing bracket.

[0063] Alternatively, the first reinforcing part is located between the flexible circuit board and the first middle frame, and both sides of the first reinforcing part are respectively sealed and connected to the flexible circuit board and the first middle frame.

[0064] By setting the first reinforcing part, the strength and rigidity of the first end of the flexible circuit board can be increased, preventing the first end of the flexible circuit board from deforming or being damaged during use.

[0065] In one possible implementation, it further includes: a second reinforcing part;

[0066] The second reinforcing part is located on at least one side of the second end of the flexible circuit board. The second reinforcing part is located between the flexible circuit board and the second pressing bracket, and both sides of the second reinforcing part are respectively sealed and connected to the flexible circuit board and the second pressing bracket.

[0067] Alternatively, the second reinforcing part is located between the flexible circuit board and the second middle frame, and both sides of the second reinforcing part are respectively sealed and connected to the flexible circuit board and the second middle frame.

[0068] By providing a second reinforcing part, the strength and rigidity of the second end of the flexible circuit board can be increased, preventing the second end of the flexible circuit board from deforming or being damaged during use.

[0069] In one possible implementation, the first display screen has a flexible portion on the side facing the pivot mechanism, and the flexible portion is stacked on the first display screen;

[0070] The rotating mechanism is oriented towards the front projection of the first display screen, covering the flexible part.

[0071] By providing a flexible section on the side of the first display screen facing the hinge mechanism, the bending reliability of the entire foldable electronic device is increased.

[0072] A second aspect of this application provides a bending structure, comprising:

[0073] Rotating shaft mechanism;

[0074] The first middle frame is located on one side of the rotating shaft mechanism and is rotatably connected to the rotating shaft mechanism;

[0075] The first pressing bracket has a first opening in the first middle frame, the first pressing bracket is located at the first opening, and the edge of the first middle frame with the first opening overlaps with one end of the first pressing bracket.

[0076] The bending structure is used to support the flexible circuit board and the first display screen.

[0077] The bending structure provided in this application includes a pivot mechanism, a first middle frame, and a first pressing bracket. The first middle frame is located on one side of the pivot mechanism and rotatably connected to it. The first middle frame has a first opening, and the first pressing bracket is located at the first opening, with the edge of the first middle frame having the first opening overlapping one end of the first pressing bracket. The bending structure provided in this application can support the flexible circuit board and the first display screen of a foldable electronic device.

[0078] It should be understood that the second aspect of this application corresponds to the technical solution of the first aspect of this application, and the beneficial effects achieved by each aspect and the corresponding feasible implementation are similar, and will not be repeated here. Attached Figure Description

[0079] Figure 1 is a schematic diagram of the overall structure of the foldable electronic device provided in an embodiment of this application;

[0080] Figure 2 is a schematic diagram of the overall structure of the foldable electronic device provided in an embodiment of this application from another angle;

[0081] Figure 3 is a schematic diagram of the structure of a foldable electronic device;

[0082] Figure 4 is a schematic diagram of the first middle frame and flexible circuit board of the foldable electronic device provided in an embodiment of this application;

[0083] Figure 5 is an exploded view of the first middle frame and flexible circuit board of the foldable electronic device provided in the embodiment of this application;

[0084] Figure 6 is a partial structural schematic diagram of the foldable electronic device provided in an embodiment of this application;

[0085] Figure 7 is a schematic diagram of a partial cross-section of AA in Figure 4;

[0086] Figure 8 is a schematic diagram of the foldable electronic device provided in the embodiment of this application in a folded state;

[0087] Figure 9 is a partial structural schematic diagram of another foldable electronic device provided in an embodiment of this application.

[0088] Explanation of reference numerals in the attached drawings: 100 - Foldable electronic device; 110 - Flexible circuit board; 111 - First end; 112 - Second end; 113 - First reinforcement; 114 - Second reinforcement; 120 - Rotating shaft mechanism; 121 - Rotating shaft body; 122 - Rotating shaft back cover; 123 - First redundancy space; 124 - Second redundancy space; 130 - First middle frame; 131 - First side; 132 - Second side; 133 - First opening; 134 - First overlap; 1341 - Groove; 135 - First sealant layer; 136 - Second overlap; 1361 - First arc-shaped recess; 137 - First channel; 138 - First seal; 139 - Second seal; 140 - Second middle frame; 141 - Second opening; 142 - Third overlap; 143-Second sealing layer; 144-Fourth overlapping portion; 1441-Second arc-shaped recess; 145-Second channel; 146-Third seal; 147-Fourth seal; 150-First display screen; 151-Flexible portion; 160-First pressing bracket; 161-First connecting portion; 162-Second connecting portion; 1621-First arc-shaped convex surface; 170-Second display screen; 180-Second pressing bracket; 181-Third connecting portion; 182-Fourth connecting portion; 1821-Second arc-shaped convex surface; 190-Battery cover. Detailed Implementation

[0089] The terminology used in the implementation section of this application is only for explaining specific embodiments of this application and is not intended to limit this application. The implementation of the embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0090] Unless the context otherwise requires, throughout the specification and claims, the term "comprise" and its other forms, such as the third-person singular "comprises" and the present participle "comprising," are interpreted as open-ended and encompassing, meaning "including, but not limited to." In the description of the specification, terms such as "one embodiment," "some embodiments," "exemplary embodiments," "example," or "some examples" are intended to indicate that a particular feature, structure, material, or characteristic associated with that embodiment or example is included in at least one embodiment or example of this disclosure. The illustrative representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics mentioned may be included in any suitable manner in any one or more embodiments or examples.

[0091] Furthermore, in the embodiments of this application, directional terms such as "front" and "rear" are defined relative to the orientation of the components shown in the accompanying drawings. It should be understood that these directional terms are relative concepts, used for relative description and clarification, and can change accordingly depending on the orientation of the components in the accompanying drawings.

[0092] In the embodiments of this application, "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0093] The first aspect of this application provides a foldable electronic device. It is understood that the foldable electronic device can be a mobile terminal device such as a mobile phone, tablet computer, laptop computer, personal digital assistant (PDA), smart wearable device, or point of sales (POS). Alternatively, the foldable electronic device can also be a fixed terminal device such as a smart TV, router, server, or switch. This embodiment does not limit the scope of the application.

[0094] Referring to Figures 1 and 2, the foldable electronic device 100 may include at least a first display screen 150, a battery cover 190, a battery, a hinge mechanism 120, and a flexible circuit board disposed between the hinge mechanism 120. The battery may be electrically connected to the flexible circuit board. In one possible embodiment, taking a mobile phone as an example, Figures 1 and 2 show overall structural schematic diagrams of the foldable electronic device 100 from two different angles.

[0095] Based on the above embodiments, referring to Figures 1 and 2, the foldable electronic device 100 may further include a first middle frame 130 and a second middle frame 140. The first middle frame 130 and the second middle frame 140 may be located at opposite ends of a pivot mechanism 120, and the rotation of the pivot mechanism 120 enables the first middle frame 130 and the second middle frame 140 to be in a folded or unfolded state. One side of the first middle frame 130 is connected to the first display screen 150, and the other side of the first middle frame 130 is connected to the second display screen 170. Correspondingly, one side of the second middle frame 140 is connected to the first display screen 150, and the other side of the second middle frame 140 is connected to the battery cover 190. The battery may be disposed on the side of the second middle frame 140 facing the battery cover 190. It is understood that the battery can be installed in the hollow internal space formed by the connection between the battery cover 190 and the second middle frame 140.

[0096] For example, the battery cover 190 can be a metal back cover, a glass back cover, a plastic back cover, or a ceramic back cover. In this embodiment of the application, the material of the battery cover 190 is not limited, nor is it limited to the above examples.

[0097] It is understood that the structures illustrated in the embodiments of this application do not constitute a specific limitation on the foldable electronic device. In other embodiments of this application, the foldable electronic device 100 (e.g., a mobile phone) may include more or fewer components than illustrated, or combine some components, or separate some components, or have different component arrangements. The illustrated components may be implemented in hardware, software, or a combination of software and hardware.

[0098] In order to achieve the goal of making the overall thickness of the foldable electronic device 100 thinner and thinner, the space in the axial area of ​​the foldable electronic device 100 (such as a mobile phone) needs to be further compressed to ensure the battery capacity of the whole device.

[0099] Figure 3 is a schematic diagram of a foldable electronic device 100. Referring to Figure 3, the foldable electronic device 100 may include: a first display screen 150, a second display screen 170, a first middle frame 130, a second middle frame 140, a pivot mechanism 120, and a flexible circuit board 110 passing through the pivot mechanism 120. The first display screen 150 is located on one side of the first middle frame 130, the second middle frame 140, and the pivot mechanism 120. The second display screen 170 is located on the side of the first middle frame 130 facing away from the first display screen 150. The first middle frame 130 and the second middle frame 140 are respectively located on both sides of the pivot mechanism 120 in a first direction, and the first middle frame 130 and the second middle frame 140 are rotatably connected to the pivot mechanism 120. The flexible circuit board 110 is inserted into the rotating shaft mechanism 120, and one end of the flexible circuit board 110 is inserted into the first middle frame 130 and extends out of the first middle frame 130, while the other end of the flexible circuit board 110 is inserted into the second middle frame 140 and extends out of the second middle frame 140.

[0100] However, the foldable electronic device 100 shown in Figure 3 has the following drawbacks: Due to manufacturing limitations, the first mid-frame 130 in the foldable electronic device 100 may not be thin enough. This is detrimental to the future trend of miniaturization in foldable electronic devices 100, hindering its thinness and lightness and improving the user's grip experience. This is especially true for foldable screen phones, where more and more users are using them as their primary devices. However, the thickness of foldable screen phones is nearly twice that of regular phones, resulting in a poor grip experience for users.

[0101] Furthermore, continuing with the foldable screen phone as an example, if the flexible circuit board 110 is not sealed with adhesive in the area through the hinge, there may be a certain gap between the first middle frame 130 and the flexible circuit board 110, making it impossible to achieve the waterproof function of the entire device. If the sealing adhesive layer between the flexible circuit board 110 and the first middle frame 130 is too thick, it may cause light and shadow problems on the second display screen 170 of the entire device, thereby affecting the performance of the foldable electronic device 100.

[0102] Based on this, this application provides a foldable electronic device 100, as shown in Figures 6 and 7. This foldable electronic device 100, by changing the fit between the first middle frame 130 and the first pressing bracket 160, reduces the thickness of the first middle frame 130 to a certain height. A groove 1341 is formed on the side of the first overlapping portion 134 of the first middle frame 130 facing the first display screen 150, creating a stepped structure between the first overlapping portion 134 and the groove 1341. This facilitates the overlap between the first connecting portion 161 of the first pressing bracket 160 and the first overlapping portion 134. A first sealing layer 135 is provided between the first connecting portion 161 and the first overlapping portion 134, providing good waterproof performance.

[0103] The following describes the specific structure of the foldable electronic device 100 using a specific embodiment as an example, in conjunction with the accompanying drawings.

[0104] Referring to Figures 1, 2, and 6, this application embodiment provides a foldable electronic device 100, which may include a flexible circuit board 110, a pivot mechanism 120, a first middle frame 130, and a second middle frame 140. The flexible circuit board 110 may pass through the pivot mechanism 120 along a first direction, such that a portion of the flexible circuit board 110 is located within the pivot mechanism 120. The first middle frame 130 and the second middle frame 140 are respectively located on both sides of the pivot mechanism 120 in the first direction, and the first middle frame 130 and the second middle frame 140 are rotatably connected to the pivot mechanism 120.

[0105] Referring to FIG7, in one possible implementation, the flexible circuit board 110 may have a first end 111 and a second end 112, while the first middle frame 130 may have a first side 131 and a second side 132 along a second direction. As shown in FIGS. 4 and 5, a first opening 133 may be provided on the first middle frame 130. In this embodiment, the first opening 133 allows the first end 111 of the flexible circuit board 110 to pass through, and the first opening 133 extends through the first side 131 and the second side 132 of the first middle frame 130.

[0106] For ease of description, in this embodiment, the first direction is the width direction of the foldable electronic device 100, i.e., the x-direction in Figure 2. The second direction is the thickness direction of the foldable electronic device 100, i.e., the y-direction in Figure 2. The third direction is the length direction of the foldable electronic device 100, i.e., the z-direction in Figure 2. The first, second, and third directions are perpendicular to each other.

[0107] Referring again to Figure 7, based on the above embodiment, the foldable electronic device 100 may further include a first display screen 150. The first display screen 150 may be located on one side of the first middle frame 130, the second middle frame 140, and the hinge mechanism, and the first display screen 150 may be connected to the first middle frame 130, the second middle frame 140, and the hinge mechanism 120. The first side 131 of the first middle frame 130 faces the first display screen 150. It is understood that, as shown in Figure 8, when the foldable electronic device 100 is in a folded state by rotating the hinge mechanism 120, the first middle frame 130 and the second middle frame 140 are positioned opposite each other, and at least a portion of the hinge mechanism 120 is exposed between the first middle frame 130 and the second middle frame 140. When the foldable electronic device 100 is in an unfolded state by rotating the hinge mechanism 120, the first middle frame 130 and the second middle frame 140 are located on the same horizontal plane, and a receiving cavity is formed between the first middle frame 130, the second middle frame 140, and the first display screen 150, with the hinge assembly located within the receiving cavity.

[0108] Referring again to Figure 6, based on the above embodiment, the foldable electronic device 100 may further include a first pressing bracket 160. As shown in Figure 4, the first pressing bracket 160 is located at the first opening 133. In one possible implementation, as shown in Figures 6 and 7, one end of the first pressing bracket 160 has a first connecting portion 161, which is located on the first side 131 of the first middle frame 130 and connected to the first side 131 of the first middle frame 130. Correspondingly, the other end of the first pressing bracket 160 can cooperate with the first middle frame 130, allowing the other end of the first pressing bracket 160 to be pressed onto the flexible circuit board 110, thereby limiting the position of a portion of the flexible circuit board 110. In this way, by connecting the first connecting part 161 to the first side 131 of the first middle frame 130, the first connecting part 161 can have a borrowing relationship with the first side 131 of the first middle frame 130, which reduces the thickness of the foldable electronic device 100 in the second direction and further realizes the trend of reducing the overall thickness of the foldable electronic device 100.

[0109] Referring again to Figure 7, based on the above embodiment, a groove 1341 can be formed on the first side 131 of the first middle frame 130, facing the first connecting portion 161. At least a portion of the first connecting portion 161 can be located in the groove 1341 and overlap with the bottom of the groove 1341, thereby connecting the first connecting portion 161 and the first side 131 of the first middle frame 130 through the cooperation of the first connecting portion 161 and the groove 1341. In this way, at least a portion of the projection of the first side 131 of the first middle frame 130 towards the first connecting portion 161 coincides. By forming the groove 1341, the thickness of the first middle frame 130 is reduced in the second direction. Furthermore, the overlap between the first connecting portion 161 and the bottom of the groove 1341 allows for a staggered design between the first side 131 of the first middle frame 130 and the first connecting portion 161, reducing the overall thickness of the machine.

[0110] Referring again to Figure 7, based on the above embodiment, the first middle frame 130 may have a first overlapping portion 134 near the first opening 133, and the first overlapping portion 134 extends along a third direction. It is understood that the groove 1341 may be formed on the side of the first overlapping portion 134 facing the first display screen 150, and the first connecting portion 161 of the first pressing bracket 160 is located on the side of the first overlapping portion 134 facing the first display screen 150. This allows the first connecting portion 161 and the first overlapping portion 134 to overlap and connect in a second direction. The first overlapping portion 134 and the groove 1341 cooperate to form a stepped structure, facilitating the overlap between the first connecting portion 161 and the first overlapping portion 134.

[0111] Referring again to Figure 7, based on the above embodiment, the foldable electronic device 100 may further include a first sealant layer 135. The first overlapping portion 134 and the first connecting portion 161 of the first pressing bracket 160 can be sealed and connected by the first sealant layer 135. In this embodiment, the first overlapping portion 134 and the first connecting portion 161 can be directly glued together, or they can be connected by other adhesives, thereby achieving the connection between the first middle frame 130 and the first pressing bracket 160. It is understood that the first sealant layer 135 has a certain waterproof function.

[0112] Referring again to Figure 7, based on the above embodiment, in the second direction, the side of the first sealant layer 135 facing the second side 132 of the first middle frame 130 is lower than the surface of the first overlapping portion 134 located on the second side 132 of the first middle frame 130. Thus, by setting the side of the first sealant layer 135 facing the second side 132 of the first middle frame 130 lower than the surface of the first overlapping portion 134 located on the second side 132 of the first middle frame 130, the thickness of the first sealant layer 135 in the second direction is thinner, and it does not protrude beyond the surface of the first overlapping portion 134 located on the second side 132 of the first middle frame 130, preventing the first sealant layer 135 from affecting other components located on the second side 132 of the first middle frame 130.

[0113] Referring again to Figure 7, based on the above embodiments, the foldable electronic device 100 may further include a second display screen 170. The second display screen 170 may be located on the second side 132 of the first middle frame 130, and is connected to the first middle frame 130. In this embodiment, it is understood that if the thickness of the first sealant layer 135 is too thick—that is, if the side of the first sealant layer 135 facing the second side 132 of the first middle frame 130 is higher than the surface of the first overlapping portion 134 located on the second side 132 of the first middle frame 130—the first sealant layer 135 exerts a certain external force on the second display screen 170 in the second direction. When the human eye observes the second display screen 170 at a certain angle, the second display screen 170 may exhibit wavy patterns, leading to light and shadow problems on the second display screen 170 of the foldable electronic device 100.

[0114] Understandably, in order to further reduce the thickness of the foldable electronic device 100 in the second direction, the thickness of the first mid-frame 130 in the second direction is also reduced accordingly. When the thickness of the first mid-frame 130 is reduced to the same height as the first pressing bracket 160, the first sealing layer 135 may protrude from the surface of the first overlapping portion 134 located on the second side 132 of the first mid-frame 130, which may easily cause light and shadow problems in the second display screen 170. If the thickness of the first mid-frame 130 is further reduced to reduce the overall thickness, the manufacturability and processability of the first mid-frame 130 cannot be satisfied, and the manufacturing process is difficult to achieve. Therefore, based on meeting the requirements, after the thickness of the first mid-frame 130 is reduced to a certain height, a groove 1341 is provided on the side of the first overlapping portion 134 of the first mid-frame 130 facing the first display screen 150, so that the first overlapping portion 134 and the groove 1341 form a stepped structure, thereby facilitating the overlap of the first connecting portion 161 and the first overlapping portion 134. In this way, by reducing the thickness of the first middle frame 130, the overall thickness of the foldable electronic device 100 is reduced, while also satisfying the strength and manufacturability requirements of the first middle frame 130. Furthermore, the positioning of the first sealant layer 135 ensures the waterproofing of the foldable electronic device 100.

[0115] Referring again to Figure 7, based on the above embodiment, the first pressing bracket 160 may further have a second connecting portion 162. Correspondingly, the first middle frame 130 may have a second overlapping portion 136 at the first opening 133. In one possible implementation, a first channel 137 is provided between the second connecting portion 162 and the second overlapping portion 136. The first channel 137 allows the first end 111 of the flexible circuit board 110 to pass through, thus allowing the flexible circuit board 110 to pass through the first channel 137 and be sealed and connected to the second connecting portion 162 and the second overlapping portion 136. It is understood that at least a portion of the flexible circuit board 110 is located between the second overlapping portion 136 and the second connecting portion 162, and one side of the flexible circuit board 110 is sealed and connected to the second connecting portion 162, while the other side of the flexible circuit board 110 is sealed and connected to the second overlapping portion 136, further providing good waterproof performance.

[0116] Referring again to Figure 7, based on the above embodiment, in one possible implementation, the second overlapping portion 136 may have a first arc-shaped recess 1361 on the side facing the second connecting portion 162. Correspondingly, as shown in Figure 7, the second connecting portion 162 has a first arc-shaped convex surface 1621 protruding towards the first arc-shaped recess 1361. Thus, the first arc-shaped recess 1361 can cooperate with the first arc-shaped convex surface 1621, thereby forming an arc-shaped first channel 137 between the first arc-shaped convex surface 1621 and the first arc-shaped recess 1361. The first end 111 of the flexible circuit board 110 passes through the arc-shaped first channel 137, facilitating the bending of the flexible circuit board 110 and enhancing the bending reliability of the flexible circuit board 110.

[0117] Referring again to Figure 7, based on the above embodiments, the foldable electronic device 100 may further include a first sealing member 138 and a second sealing member 139. The first sealing member 138 and the second sealing member 139 are located within the first channel 137 and away from the rotating shaft mechanism 120. In this embodiment, the first sealing member 138 may be located between the first arc-shaped convex surface 1621 and the flexible circuit board 110 to seal and connect the first arc-shaped convex surface 1621 and the flexible circuit board 110, thereby achieving a sealed connection between the second connecting portion 162 and the flexible circuit board 110. Correspondingly, the second sealing member 139 may be located between the first arc-shaped recess 1361 and the flexible circuit board 110 to seal and connect the first arc-shaped recess 1361 and the flexible circuit board 110, thereby achieving a sealed connection between the second overlapping portion 136 and the flexible circuit board 110. Thus, the arrangement of the first sealing member 138 and the second sealing member 139 further enhances the overall waterproof performance of the device.

[0118] It is understandable that liquid may enter the entire machine from the rotating shaft mechanism 120 during rotation. In this embodiment, the first connecting portion 161 of the first pressing bracket 160 facing the second display screen 170 is sealed to the first overlapping portion 134 through the first sealing adhesive layer 135, the second connecting portion 162 of the first pressing bracket 160 facing the first display screen 150 is sealed to the flexible circuit board 110 through the first sealing element 138, and the second overlapping portion 136 is sealed to the flexible circuit board 110 through the second sealing element 139. In this way, under a certain depth and pressure, liquid will not enter the entire machine from the rotating shaft mechanism 120, thus preventing liquid from entering the first channel 137 and corroding the circuit.

[0119] Referring again to Figure 7, based on the above embodiment, a first redundant space 123 may be provided between the second connecting portion 162 and the second overlapping portion 136, allowing the flexible circuit board 110 to be bent. The first redundant space 123 is connected to the first channel 137 and is located close to the rotating shaft mechanism 120. It is understood that the first end 111 of the flexible circuit board 110 passes through the rotating shaft mechanism 120, then along the first redundant space 123 through the first channel 137, and then extends out of the first channel 137. During the insertion of the flexible circuit board 110, the first redundant space 123 helps prevent distortion and noise when the flexible circuit board 110 is bent.

[0120] Understandably, the first frame 130 has a second overlapping portion 136 at the first opening 133, allowing the flexible circuit board 110 to pass through the first channel 137, bypassing the second overlapping portion 136, with the flexible circuit board 110 arranged in a bent shape. Furthermore, the provision of the first redundant space 123 allows the flexible circuit board 110 to be bent to a greater extent. Thus, referring to Figure 7, the flexible circuit board 110 can be arranged in a W-shape, bendably positioned within the first redundant space 123 and the first channel 137.

[0121] Referring again to Figure 7, based on the above embodiments, the foldable electronic device 100 may further include a second pressing bracket 180. A second opening 141 may be provided on the second middle frame 140. In this embodiment, the second opening 141 allows the second end 112 of the flexible circuit board 110 to pass through, and the second pressing bracket 180 is located at the second opening 141. It is understood that the second pressing bracket 180 is sealed to the edge of the second middle frame 140 at the second opening 141, thereby providing good waterproofing.

[0122] In one possible implementation, one end of the second pressing bracket 180 may have a third connecting portion 181. The third connecting portion 181 is sealed to the edge of the second middle frame 140 at the second opening 141. Correspondingly, the other end of the second pressing bracket 180 can cooperate with the second middle frame 140, allowing the other end of the second pressing bracket 180 to press against the flexible circuit board 110, thereby limiting a portion of the flexible circuit board 110. Thus, the first pressing bracket 160 presses against the first end 111 of the flexible circuit board 110, and the second pressing bracket 180 presses against the second end 112 of the flexible circuit board 110. The central region of the flexible circuit board 110 is located within the pivot mechanism 120, facilitating the placement of the entire flexible circuit board 110 within the overall internal structure. Furthermore, by providing the third connecting portion 181 to the edge of the second middle frame 140 at the second opening 141, the thickness of the foldable electronic device 100 in the second direction can be further reduced, thereby achieving a thinning trend in the overall thickness of the foldable electronic device 100.

[0123] Referring again to Figure 7, based on the above embodiment, a groove 1341 may also be provided on the second middle frame 140 facing the third connecting portion 181. The groove 1341 on the second middle frame 140 may be the same as the groove 1341 on the first middle frame 130. At least a portion of the third connecting portion 181 may be located in the groove 1341 and overlap with the bottom of the groove 1341, thereby achieving the connection between the third connecting portion 181 and the groove 1341 at the edge of the second middle frame 140 at the second opening 141 through the cooperation of the third connecting portion 181 and the groove 1341. In this way, at least a portion of the projection of the edge of the second middle frame 140 at the second opening 141 toward the third connecting part 181 coincides. The edge of the second middle frame 140 at the second opening 141 reduces part of the thickness of the second middle frame 140 in the second direction by opening a groove 1341, and the third connecting part 181 overlaps with the bottom of the groove 1341, so that the edge of the second middle frame 140 at the second opening 141 and the third connecting part 181 are misaligned, thereby reducing the overall thickness of the machine.

[0124] Referring again to Figure 7, based on the above embodiment, the second middle frame 140 has a third overlapping portion 142 at the second opening 141. It is understood that the groove 1341 can be formed on the side of the third overlapping portion 142 facing the first display screen 150, and the third connecting portion 181 of the second pressing bracket 180 is located on the side of the third overlapping portion 142 facing the first display screen 150, and the third connecting portion 181 is sealed to the third overlapping portion 142. This allows the third connecting portion 181 and the third overlapping portion 142 to overlap and connect in the second direction. The third overlapping portion 142 and the groove 1341 cooperate to form a stepped structure, facilitating the overlap between the third connecting portion 181 and the third overlapping portion 142.

[0125] Referring again to Figure 7, based on the above embodiment, the foldable electronic device 100 may further include a second sealant layer 143. The second sealant layer 143 may be located between the third connecting portion 181 and the third overlapping portion 142, thereby achieving a sealed connection between the third overlapping portion 142 and the third connecting portion 181 through the second sealant layer 143. In this embodiment, the third overlapping portion 142 and the third connecting portion 181 can be directly glued together, or they can be connected by other adhesives, thereby achieving the connection between the second middle frame 140 and the second pressing bracket 180. It is understood that the second sealant layer 143 has a certain waterproof function, preventing liquid from entering the interior of the device along the overlap between the third overlapping portion 142 and the third connecting portion 181.

[0126] Referring again to Figure 7, based on the above embodiment, the second pressing bracket 180 may further have a fourth connecting portion 182. Correspondingly, the second middle frame 140 may have a fourth overlapping portion 144 at the second opening 141. In one possible embodiment, a second channel 145 may be provided between the fourth connecting portion 182 and the fourth overlapping portion 144. The second channel 145 allows the second end 112 of the flexible circuit board 110 to pass through, thus allowing the second end 112 of the flexible circuit board 110 to pass through the second channel 145 and be sealed and connected to the fourth connecting portion 182 and the fourth overlapping portion 144. It is understood that at least a portion of the flexible circuit board 110 is located between the fourth overlapping portion 144 and the fourth connecting portion 182, and one side of the second end 112 of the flexible circuit board 110 is sealed and connected to the fourth connecting portion 182, while the other side of the second end 112 of the flexible circuit board 110 is sealed and connected to the fourth overlapping portion 144, further providing good waterproof performance and preventing liquid from entering the interior of the entire machine along the second end 112 of the flexible circuit board 110.

[0127] Referring again to Figure 7, based on the above embodiments, in one possible implementation, the fourth overlapping portion 144 may have a second arcuate recess 1441 on the side facing the fourth connecting portion 182. Correspondingly, the fourth connecting portion 182 has a second arcuate convex surface 1821 protruding towards the second arcuate recess 1441. Thus, the second arcuate recess 1441 can cooperate with the second arcuate convex surface 1821, thereby forming an arcuate second channel 145 between the second arcuate convex surface 1821 and the second arcuate recess 1441. The second end 112 of the flexible circuit board 110 passes through the arcuate second channel 145, facilitating the bending of the flexible circuit board 110 and enhancing the bending reliability of the flexible circuit board 110.

[0128] Referring again to Figure 7, based on the above embodiments, the foldable electronic device 100 may further include a third sealing member 146 and a fourth sealing member 147. The third sealing member 146 and the fourth sealing member 147 are located within the second channel 145 and away from the rotating shaft mechanism 120. In this embodiment, the third sealing member 146 may be located between the second arcuate convex surface 1821 and the flexible circuit board 110 to seal and connect the second arcuate convex surface 1821 and the flexible circuit board 110, thereby achieving a sealed connection between the fourth connecting portion 182 and the flexible circuit board 110. Correspondingly, the fourth sealing member 147 may be located between the second arcuate recess 1441 and the flexible circuit board 110 to seal and connect the second arcuate recess 1441 and the flexible circuit board 110, thereby achieving a sealed connection between the fourth overlapping portion 144 and the flexible circuit board 110. Thus, the arrangement of the third sealing member 146 and the fourth sealing member 147 further enhances the overall waterproof performance of the device.

[0129] In this embodiment, the third connecting portion 181 of the second pressing bracket 180 is sealed to the third overlapping portion 142 via the second sealing adhesive layer 143. The side of the fourth connecting portion 182 of the second pressing bracket 180 facing the first display screen 150 is sealed to the flexible circuit board 110 via the third sealing member 146, and the fourth overlapping portion 144 is sealed to the flexible circuit board 110 via the fourth sealing member 147. Thus, under certain depth and pressure, liquid will not enter the entire machine from the rotating shaft mechanism 120, preventing liquid from entering the second channel 145 and corroding the circuit.

[0130] Referring again to Figure 7, based on the above embodiment, a second redundant space 124, allowing the flexible circuit board 110 to be bent, can be provided between the fourth connecting portion 182 and the fourth overlapping portion 144. The second redundant space 124 is connected to the second channel 145, and can also be positioned close to the rotating shaft mechanism 120, so that the first redundant space 123 and the second redundant space 124 are located on opposite sides of the rotating shaft mechanism 120. It is understood that the second end 112 of the flexible circuit board 110 passes through the rotating shaft mechanism 120, then along the second redundant space 124 through the second channel 145, and then extends out of the second channel 145. During the insertion of the flexible circuit board 110, the provision of the second redundant space 124 also prevents distortion and noise from occurring when the flexible circuit board 110 is bent.

[0131] It is understandable that the contour-following design of the peripheral structural components such as the first middle frame 130, the first pressing bracket 160, the second middle frame 140, and the second pressing bracket 180 can eliminate the bending noise generated by the flexible circuit board 110 during bending, avoid the morphological distortion of the flexible circuit board 110, and thus ensure that the flexible circuit board 110 can be bent within the space defined by the first middle frame 130, the first pressing bracket 160, the second middle frame 140, and the second pressing bracket 180.

[0132] It is also understood that the second middle frame 140 has a fourth overlapping portion 144 at the second opening 141, allowing the flexible circuit board 110 to pass through the second channel 145 around the fourth overlapping portion 144, with the flexible circuit board 110 arranged in a bent shape. Furthermore, the provision of the second redundant space 124 allows the flexible circuit board 110 to be bent to a greater extent. Thus, referring to Figure 7, the flexible circuit board 110 can be arranged in a W-shape and bendably positioned within the second redundant space 124 and the second channel 145.

[0133] Referring again to Figure 2, based on the above embodiments, the foldable electronic device 100 may further include a battery cover 190. Referring to Figure 1, the battery cover 190 may be located on the side of the second middle frame 140 facing away from the first display screen 150, and the battery cover 190 is connected to the second middle frame 140. In one possible implementation, the battery cover 190 and the second display screen 170 may be located at opposite ends of the hinge mechanism 120 in a first direction. It is understood that when the hinge mechanism 120 is rotated so that the foldable electronic device 100 is in a folded state, the battery cover 190 and the second display screen 170 are positioned opposite each other, with at least a portion of the hinge mechanism 120 exposed between the battery cover 190 and the second display screen 170. When the hinge mechanism 120 is rotated so that the foldable electronic device 100 is in an unfolded state, the battery cover 190 and the second display screen 170 may be located on the same horizontal plane. When the battery cover 190 and the second display screen 170 are on the same plane, the overall size of the battery cover 190 and the second display screen 170 may be the same as the size of the first display screen 150, so that the whole device has a good appearance.

[0134] Referring again to Figure 7, based on the above embodiment, the foldable electronic device 100 may further include a first reinforcing portion 113. The first reinforcing portion 113 may be located on at least one side of the first end 111 of the flexible circuit board 110. In one possible implementation, the first reinforcing portion 113 may be located between the flexible circuit board 110 and the first pressing bracket 160, and both sides of the first reinforcing portion 113 may be sealed and connected to the flexible circuit board 110 and the first pressing bracket 160, respectively.

[0135] Alternatively, in another possible implementation, the first reinforcing portion 113 may be located between the flexible circuit board 110 and the first middle frame 130, and both sides of the first reinforcing portion 113 may be sealed to the flexible circuit board 110 and the first middle frame 130, respectively. Of course, in some other embodiments, there may be two first reinforcing portions 113. One first reinforcing portion 113 is located between the flexible circuit board 110 and the first pressing bracket 160, and both sides of this first reinforcing portion 113 are sealed to the flexible circuit board 110 and the first pressing bracket 160, respectively. The other first reinforcing portion 113 is located between the flexible circuit board 110 and the first middle frame 130, and both sides of this first reinforcing portion 113 are sealed to the flexible circuit board 110 and the first middle frame 130, respectively. This application does not limit the number or location of the first reinforcing portions 113 in this embodiment.

[0136] Referring again to Figure 7, based on the above embodiments, the foldable electronic device 100 may further include a second reinforcing portion 114. The second reinforcing portion 114 may be located on at least one side of the second end 112 of the flexible circuit board 110. In one possible implementation, the second reinforcing portion 114 may be located between the flexible circuit board 110 and the second pressing bracket 180, and both sides of the second reinforcing portion 114 may be sealingly connected to the flexible circuit board 110 and the second pressing bracket 180, respectively.

[0137] Alternatively, in another possible implementation, the second reinforcing portion 114 may be located between the flexible circuit board 110 and the second middle frame 140, and both sides of the second reinforcing portion 114 may be sealed to the flexible circuit board 110 and the second middle frame 140, respectively. Of course, in some other embodiments, there may be two second reinforcing portions 114. One second reinforcing portion 114 is located between the flexible circuit board 110 and the second pressing bracket 180, and both sides of this second reinforcing portion 114 are sealed to the flexible circuit board 110 and the second pressing bracket 180, respectively. The other second reinforcing portion 114 is located between the flexible circuit board 110 and the second middle frame 140, and both sides of this second reinforcing portion 114 are sealed to the flexible circuit board 110 and the second middle frame 140, respectively. This application does not limit the number or location of the second reinforcing portions 114 in this embodiment.

[0138] Understandably, the first reinforcing part 113 and the second reinforcing part 114 can be used to increase the strength and rigidity of the flexible circuit board 110, preventing the flexible circuit board 110 from deforming or being damaged during use. The first reinforcing part 113 and the second reinforcing part 114 can disperse and transfer stress, reducing stress concentration points, thereby extending the service life of the flexible circuit board 110.

[0139] Referring again to Figure 6, based on the above embodiment, the side of the first display screen 150 facing the pivot mechanism 120 may have a flexible portion 151, and the flexible portion 151 may be formed by stacking multiple flexible layers, thereby allowing the flexible portion 151 to be stacked on the first display screen 150. In one possible implementation, the area of ​​the flexible portion 151 on the first display screen 150 may be located on the side of the pivot mechanism 120 facing the first display screen 150, and the orthographic projection of the pivot mechanism 120 towards the first display screen 150 can cover the flexible portion 151. This increases the bending reliability of the entire foldable electronic device 100. It is understood that the flexible portion 151 can be bent or stretched similarly to a bamboo book structure. In some embodiments, the flexible portion 151 may have different structures, shapes, sizes, and the number of flexible layers stacked, and the flexible portion 151 may be configured according to the different requirements of the foldable electronic device 100.

[0140] Referring to Figure 8, which is a schematic diagram of the foldable electronic device 100 provided in an embodiment of this application in a folded state, the first middle frame 130 and the second middle frame 140 are bent toward the first display screen 150 via a pivot mechanism 120, thereby causing the foldable electronic device 100 to be in a folded state.

[0141] Referring to Figure 9, based on the above embodiment, the hinge mechanism 120 may include a hinge body 121 and a hinge back cover 122. The hinge body 121 may be located on the side of the hinge back cover 122 facing the first display screen 150. In one possible implementation, both ends of the hinge back cover 122 may be positioned facing the first display screen 150, and a gap exists between the hinge body 121 and the hinge back cover 122 for the flexible circuit board 110 to pass through. One end of the hinge body 121 is connected to the first middle frame 130, and the other end of the hinge body 121 is connected to the second middle frame 140. It is understood that when the flexible circuit board 110 passes through both ends of the hinge back cover 122, it can be positioned close to the first display screen 150, and when the flexible circuit board passes through the space between the hinge back cover 122 and the hinge body 121, it can be positioned close to the hinge back cover 122. This allows the flexible circuit board 110 to be arranged in a W-shape within the hinge mechanism 120, providing good bending performance.

[0142] Based on the above embodiments, the foldable electronic device 100 may further include a first housing and a second housing. The first housing includes a first mid-frame 130 and a second display screen 170, and the second housing includes a second mid-frame 140 and a battery cover 190. The first housing and the second housing are located at opposite ends of the pivot mechanism 120, and the first housing and the second housing achieve a folded state and an unfolded state through rotation of the pivot mechanism 120.

[0143] It is understandable that by providing a groove 1341 on the side of the first overlapping portion 134 facing the first display screen 150, a stepped structure is formed between the first overlapping portion 134 and the groove 1341, facilitating the overlap between the first connecting portion 161 and the first overlapping portion 134, thereby allowing the first pressing bracket 160 to be positioned towards the first middle frame 130 in the first direction. Similarly, by providing a groove 1341 on the side of the third overlapping portion 142 facing the first display screen 150, a stepped structure is formed between the third overlapping portion 142 and the groove 1341, facilitating the overlap between the third connecting portion 181 and the third overlapping portion 142, thereby allowing the second pressing bracket 180 to be positioned towards the second middle frame 140 in the first direction. This provides space in the first direction for the battery inside the device to a certain extent, thus allowing for a more rational internal structure design of the foldable electronic device 100.

[0144] Considering the stacked state of the foldable electronic device 100, people have different requirements for the thickness of the first shell and the second shell in the second direction. Since the second shell does not have a display screen, the thickness requirement of the second shell in the second direction is lower than that of the first shell in the second direction.

[0145] Referring to Figure 9, in another possible embodiment, the third connecting portion 181 can be located on the side of the third overlapping portion 142 facing away from the first display screen 150, and the third connecting portion 181 and the third overlapping portion 142 are sealed together by the second sealing layer 143. A groove 1341 can be formed on the second middle frame 140 facing the third connecting portion 181, and the groove 1341 can be formed on the side of the third overlapping portion 142 facing the battery cover 190. In this way, the third connecting portion 181 and the third overlapping portion 142 can overlap and connect together in the second direction. The third overlapping portion 142 and the groove 1341 cooperate to form a stepped structure, which facilitates the overlap of the third connecting portion 181 and the third overlapping portion 142.

[0146] Understandably, since the second housing does not involve the light and shadow issues of the display screen, the side of the second sealant layer 143 facing the battery cover 190 can be flush with or higher than the side of the third overlap 142 facing the battery cover 190, and the second sealant layer 143 will not affect other components located in the second middle frame 140.

[0147] Based on the thickness requirements of the foldable electronic device 100 in the second direction, and assuming sufficient overall thickness, in another possible implementation, the first connecting portion 161 may be located on the side of the first overlapping portion 134 facing away from the first display screen 150, and the first connecting portion 161 and the first overlapping portion 134 are sealed together by a first sealing layer 135. Correspondingly, the third connecting portion 181 may be located on the side of the third overlapping portion 142 facing away from the first display screen 150, and the third connecting portion 181 and the third overlapping portion 142 are sealed together by a second sealing layer 143. It is understood that the side of the first sealing layer 135 facing the second display screen 170 may be flush with or higher than the side of the first overlapping portion 134 facing the second display screen 170, and the side of the second sealing layer 143 facing the battery cover 190 may be flush with or higher than the side of the third overlapping portion 142 facing the battery cover 190. This can be configured according to actual needs.

[0148] A second aspect of this application provides a bending structure. This bending structure may include a pivot mechanism 120, a first middle frame 130, and a first pressing bracket 160. The first middle frame 130 may be located on one side of the pivot mechanism 120 and rotatably connected to it. In one possible implementation, the first middle frame 130 has a first opening 133, the first pressing bracket 160 may be located at the first opening 133, and the edge of the first middle frame 130 with the first opening 133 overlaps with one end of the first pressing bracket 160. It is understood that the bending structure can be used to support the flexible circuit board 110 and the first display screen 150 in the aforementioned foldable electronic device 100.

[0149] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, an indirect connection through an intermediate medium, or the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application according to the specific circumstances.

[0150] The terms "first," "second," "third," "fourth," etc. (if present) in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms "may include" and "have," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that includes a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0151] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the embodiments of this application, and are not intended to limit them. Although the embodiments of this application have been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A foldable electronic device (100), characterized in that, include: A flexible circuit board (110) has a first end (111) and a second end (112); A rotating shaft mechanism (120) is provided, wherein the flexible circuit board (110) passes through the rotating shaft mechanism (120) along a first direction; A first middle frame (130) has a first side (131) and a second side (132) along a second direction. A first opening (133) is provided on the first middle frame (130). The first opening (133) allows the first end (111) of the flexible circuit board (110) to pass through and penetrate the first side (131) and the second side (132). The second middle frame (140) is located on both sides of the rotating shaft mechanism (120) and is rotatably connected to the rotating shaft mechanism (120). A first display screen (150) is located on one side of the first middle frame (130), the second middle frame (140) and the pivot mechanism and is connected to the first middle frame (130), the second middle frame (140) and the pivot mechanism (120). The first side (131) of the first middle frame (130) faces the first display screen (150). A first pressing bracket (160) is located at the first opening (133), and one end of the first pressing bracket (160) has a first connecting portion (161). The first connecting portion (161) is located on the first side (131) of the first middle frame (130) and connected to the first side (131) of the first middle frame (130). The other end of the first pressing bracket (160) cooperates with the first middle frame (130) and is pressed onto the flexible circuit board (110).

2. The foldable electronic device (100) according to claim 1, characterized in that, A groove (1341) is provided on the first side (131) of the first middle frame (130) facing the first connecting part (161), and at least a portion of the first connecting part (161) is located in the groove (1341) and overlaps with the bottom of the groove (1341).

3. The foldable electronic device (100) according to claim 2, characterized in that, The first middle frame (130) has a first overlapping portion (134) near the first opening (133). The first overlapping portion (134) extends along a third direction. The first overlapping portion (134) has the groove (1341) on the side facing the first display screen (150). The first connecting portion (161) of the first pressing bracket (160) is located on the side of the first overlapping portion (134) facing the first display screen (150), and the first connecting portion (161) and the first overlapping portion (134) overlap and connect in the second direction.

4. The foldable electronic device (100) according to any one of claims 1-3, characterized in that, The first pressing bracket (160) also has a second connecting portion (162); The first middle frame (130) has a second overlapping portion (136) at the first opening (133), and a first channel (137) is provided between the second connecting portion (162) and the second overlapping portion (136) for the first end (111) of the flexible circuit board (110) to pass through. The flexible circuit board (110) passes through the first channel (137) and is sealed and connected to the second connecting portion (162) and the second overlapping portion (136).

5. The foldable electronic device (100) according to claim 4, characterized in that, The second overlapping portion (136) has a first arc-shaped recess (1361) on the side facing the second connecting portion (162), and the second connecting portion (162) has a first arc-shaped convex surface (1621) protruding towards the first arc-shaped recess (1361); An arc-shaped first channel (137) is formed between the first arc-shaped convex surface (1621) and the first arc-shaped concave portion (1361).

6. The foldable electronic device (100) according to claim 5, characterized in that, There is a first redundant space (123) between the second connecting part (162) and the second overlapping part (136) for the flexible circuit board (110) to be bent. The first redundant space (123) is connected to the first channel (137). The first redundant space (123) is close to the rotating shaft mechanism (120). The flexible circuit board (110) is bent in a W shape and disposed in the first redundant space (123) and the first channel (137).

7. The foldable electronic device (100) according to claim 3, characterized in that, Also includes: The first sealant layer (135) is used to seal the first overlap (134) and the first connection (161) of the first pressing bracket (160) together.

8. The foldable electronic device (100) according to claim 7, characterized in that, In the second direction, the side of the first sealant layer (135) facing the second side (132) of the first middle frame (130) is lower than the surface of the first overlap (134) located on the second side (132) of the first middle frame (130).

9. The foldable electronic device (100) according to any one of claims 1-3, characterized in that, It also includes a second display screen (170), which is located on the second side (132) of the first middle frame (130) and is connected to the first middle frame (130).

10. The foldable electronic device (100) according to claim 5, characterized in that, Also includes: A first seal (138) and a second seal (139) are located within the first channel (137) and away from the rotating shaft mechanism (120). The first seal (138) is located between the first arcuate convex surface (1621) and the flexible circuit board (110) to seal the connection between the first arcuate convex surface (1621) and the flexible circuit board (110); The second seal (139) is located between the first arcuate recess (1361) and the flexible circuit board (110) to seal the connection between the first arcuate recess (1361) and the flexible circuit board (110).

11. The foldable electronic device (100) according to any one of claims 1-3, characterized in that, Also includes: Second pressing bracket (180); A second opening (141) is provided on the second middle frame (140) for the second end (112) of the flexible circuit board (110) to pass through; The second pressing bracket (180) is located at the second opening (141), and the second pressing bracket (180) is sealed to the edge of the second middle frame (140) at the second opening (141).

12. The foldable electronic device (100) according to claim 11, characterized in that, The second pressing bracket (180) has a third connecting part (181) at one end, and the second middle frame (140) has a third overlapping part (142) at the second opening (141); The third connecting part (181) is located on the side of the third overlapping part (142) facing the first display screen (150) and is sealed to the third overlapping part (142); Alternatively, the third connecting portion (181) is located on the side of the third overlapping portion (142) facing away from the first display screen (150) and is sealed to the third overlapping portion (142).

13. The foldable electronic device (100) according to claim 12, characterized in that, It also includes a second sealant layer (143), which is located between the third connection portion (181) and the third overlap portion (142).

14. The foldable electronic device (100) according to claim 11, characterized in that, The second middle frame (140) has a fourth overlapping portion (144) at the second opening (141), and the second pressing bracket (180) has a fourth connecting portion (182); The fourth connecting part (182) and the fourth overlapping part (144) have a second channel (145) through which the second end (112) of the flexible circuit board (110) passes. The flexible circuit board (110) passes through the second channel (145) and is sealed and connected to the fourth connecting part (182) and the fourth overlapping part (144).

15. The foldable electronic device (100) according to claim 14, characterized in that, The fourth overlapping portion (144) has a second arc-shaped recess (1441) on the side facing the fourth connecting portion (182), and the fourth connecting portion (182) has a second arc-shaped convex surface (1821) protruding towards the second arc-shaped recess (1441); The second arc-shaped channel (145) is formed between the second arc-shaped convex surface (1821) and the second arc-shaped concave portion (1441).

16. The foldable electronic device (100) according to claim 15, characterized in that, Also includes: The third seal (146) and the fourth seal (147) are located within the second channel (145) and away from the rotating shaft mechanism (120); The third seal (146) is located between the second arcuate convex surface (1821) and the flexible circuit board (110) to seal the connection between the second arcuate convex surface (1821) and the flexible circuit board (110); The fourth seal (147) is located between the second arc-shaped recess (1441) and the flexible circuit board (110) to seal the connection between the second arc-shaped recess (1441) and the flexible circuit board (110).

17. The foldable electronic device (100) according to any one of claims 14-16, characterized in that, There is a second redundant space (124) between the fourth connecting part (182) and the fourth overlapping part (144) for the flexible circuit board (110) to be bent. The second redundant space (124) is connected to the second channel (145). The second redundant space (124) is close to the rotating shaft mechanism (120). The flexible circuit board (110) is bent in a W shape and disposed in the second redundant space (124) and the second channel (145).

18. The foldable electronic device (100) according to any one of claims 1-3, characterized in that, Also includes: Battery cover (190); The battery cover (190) is located on the side of the second middle frame (140) facing away from the first display screen (150), and the battery cover (190) is connected to the second middle frame (140).

19. The foldable electronic device (100) according to any one of claims 1-3, characterized in that, Also includes: First reinforcement section (113); The first reinforcing part (113) is located on at least one side of the first end (111) of the flexible circuit board (110), the first reinforcing part (113) is located between the flexible circuit board (110) and the first pressing bracket (160), and the two sides of the first reinforcing part (113) are respectively sealed and connected to the flexible circuit board (110) and the first pressing bracket (160). Alternatively, the first reinforcing part (113) is located between the flexible circuit board (110) and the first middle frame (130), and both sides of the first reinforcing part (113) are respectively sealed and connected to the flexible circuit board (110) and the first middle frame (130).

20. The foldable electronic device (100) according to any one of claims 14-16, characterized in that, Also includes: Second reinforcement section (114); The second reinforcing part (114) is located on at least one side of the second end (112) of the flexible circuit board (110), the second reinforcing part (114) is located between the flexible circuit board (110) and the second pressing bracket (180), and the two sides of the second reinforcing part (114) are respectively sealed and connected to the flexible circuit board (110) and the second pressing bracket (180); Alternatively, the second reinforcing part (114) is located between the flexible circuit board (110) and the second middle frame (140), and both sides of the second reinforcing part (114) are respectively sealed and connected to the flexible circuit board (110) and the second middle frame (140).

21. The foldable electronic device according to any one of claims 1-3, characterized in that, The first display screen has a flexible portion on the side facing the rotating shaft mechanism, and the flexible portion is stacked on the first display screen; The rotating shaft mechanism projects its orthogonal projection toward the first display screen, covering the flexible portion.

22. A bending structure, characterized in that, include: Rotating shaft mechanism; The first middle frame is located on one side of the rotating shaft mechanism and is rotatably connected to the rotating shaft mechanism; The first pressing bracket has a first opening in the first middle frame, the first pressing bracket is located at the first opening, and the edge of the first middle frame with the first opening overlaps with one end of the first pressing bracket. The bending structure is used to support the flexible circuit board and the first display screen.

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