Foldable electronic equipment and bending structure

Abstract

The utility model provides foldable electronic equipment and a bending structure. The foldable electronic equipment comprises a flexible circuit board, a rotating shaft mechanism, a first middle frame and a second middle frame. The flexible circuit board can penetrate through the rotating shaft mechanism in the first direction, so that part of the flexible circuit board is located in the rotating shaft mechanism. The first middle frame and the second middle frame are located on the two sides of the rotating shaft mechanism in the first direction correspondingly, and the first middle frame and the second middle frame are rotationally connected with the rotating shaft mechanism correspondingly. By changing the matching relation between the first middle frame and the first press-fit support, the first middle frame has a step structure after the thickness of the first middle frame is reduced to a certain height, so that the first connecting part of the first press-fit support can be in lap joint with the first middle frame conveniently, the thickness size of the foldable electronic equipment in the second direction is reduced, and the folding efficiency of the foldable electronic equipment is improved. And the thickness reduction trend of the whole foldable electronic equipment is further realized.

Description

Technical Field

[0001] The present application relates to the field of terminal technology, and in particular to a foldable electronic device and a bending structure. Background Art

[0002] With the continuous advancement of electronic technology, electronic devices such as computers and mobile phones have become indispensable communication tools in people's lives. Electronic devices are ubiquitous in our daily lives and have greatly improved people's living standards. As user needs continue to increase, the performance requirements for electronic devices are also increasing. Among these, there are even higher demands for the thinness and miniaturization of foldable electronic devices. Maintaining the essentially unchanged bending shape of flexible circuit boards to achieve electrical connection between printed circuit boards and batteries has become a crucial research topic.

[0003] Foldable electronic devices are becoming increasingly thinner. To maintain battery life, this significantly compresses the space available for flexible circuit boards (FPCBs). In conventional foldable electronic devices, the way the FPCBs are fixed can reduce the bending angle of the FPCBs, affecting their shape and bending life. This, in turn, impacts the waterproofing and signal bending reliability of the FPCBs' mounting area. Utility Model Content

[0004] The present application provides a foldable electronic device and a bending structure. By changing the matching relationship between the first middle frame and the first press-fit bracket, the thickness of the first middle frame is thinned to a certain height, so that the first middle frame has a step structure, thereby facilitating the overlap of the first connecting portion of the first press-fit bracket with the first middle frame, reducing the thickness dimension of the foldable electronic device in the second direction, and further realizing the trend of thinning the overall thickness of the foldable electronic device.

[0005] A first aspect of the present application provides a foldable electronic device, comprising:

[0006] A flexible circuit board having a first end and a second end;

[0007] A rotating shaft mechanism, wherein the flexible circuit board is passed through the rotating shaft mechanism along a first direction;

[0008] a first middle frame, the first middle frame having a first side and a second side along the second direction, and a first opening formed on the first middle frame, the first opening allowing the first end of the flexible circuit board to pass through and extending through the first side and the second side;

[0009] 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;

[0010] a first display screen, the first display screen being located on one side of the first middle frame, the second middle frame, and the hinge mechanism and being connected to the first middle frame, the second middle frame, and the hinge mechanism, with a first side of the first middle frame facing the first display screen;

[0011] The first press-fit bracket is located at the first opening, and one end of the first press-fit bracket has a first connecting portion, the first connecting portion is located on the first side of the first middle frame and is connected to the first side of the first middle frame, and the other end of the first press-fit bracket cooperates with the first middle frame and is crimped onto the flexible circuit board.

[0012] The foldable electronic device provided by the present application includes a flexible circuit board, a hinge mechanism, a first middle frame and a second middle frame. The flexible circuit board can be passed through the hinge mechanism along the first direction, so that part of the flexible circuit board is located inside the hinge mechanism. The first middle frame and the second middle frame are respectively located on both sides of the hinge mechanism in the first direction, and the first middle frame and the second middle frame are respectively connected to the hinge mechanism for rotation. The present application changes the matching relationship between the first middle frame and the first press-fit bracket, and after the thickness of the first middle frame is thinned to a certain height, the first middle frame has a step structure, thereby facilitating the overlap of the first connecting portion of the first press-fit bracket with the first middle frame, reducing the thickness dimension of the foldable electronic device in the second direction, and further realizing the trend of thinning the thickness of the entire foldable electronic device.

[0013] In a possible implementation, a groove is defined on the first side of the first middle frame and facing the first connecting portion, and at least a portion of the first connecting portion is located in the groove and overlaps with a bottom of the groove.

[0014] The first connecting portion and the groove cooperate to connect the first connecting portion to the first side of the first middle frame. This reduces the thickness of the first middle frame in the second direction. The first connecting portion overlaps the bottom of the groove, creating an offset design between the first side of the first middle frame and the first connecting portion, reducing the overall thickness of the device.

[0015] In a possible embodiment, the first middle frame has a first overlapping portion near the first opening, the first overlapping portion extends along the third direction, a groove is provided on the side of the first overlapping portion facing the first display screen, the first connecting portion of the first press-fit 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 are connected in the second direction.

[0016] By setting the first overlapping portion, a groove is opened on the side of the first overlapping portion facing the first display screen, so that the first overlapping portion and the groove form a step structure, thereby facilitating the overlapping of the first connecting portion of the first press-fit bracket and the first overlapping portion.

[0017] In a possible implementation, the first press-fit bracket further has a second connecting portion;

[0018] The first middle frame has a second overlapping portion at the first opening, and a first channel for the first end of the flexible circuit board to pass through is provided between the second connecting portion and the second overlapping portion. The flexible circuit board passes through the first channel and is sealed and connected to the second connecting portion and the second overlapping portion.

[0019] By providing the second connecting portion, the first channel and the second overlapping portion, one side of the flexible circuit board is sealed and connected to the second connecting portion, and the other side of the flexible circuit board is sealed and connected to the second overlapping portion, further having good waterproof performance.

[0020] In a possible embodiment, the second overlapping portion has a first arc-shaped concave portion on a side facing the second connecting portion, and the second connecting portion has a first arc-shaped convex surface protruding toward the first arc-shaped concave portion;

[0021] A first arc-shaped channel is formed between the first arc-shaped convex surface and the first arc-shaped concave portion.

[0022] By providing the first curved convex surface and the first curved concave portion, a first curved channel is formed between the first curved convex surface and the first curved concave portion. The first end of the flexible circuit board is inserted into the first curved channel, facilitating bending of the flexible circuit board and enhancing the bending reliability of the flexible circuit board.

[0023] In a possible embodiment, there is a first redundant space between the second connecting portion and the second overlapping portion for the flexible circuit board to bend, the first redundant space is connected to the first channel, the first redundant space is close to the rotating shaft mechanism, and the flexible circuit board is bent in a W shape and arranged in the first redundant space and the first channel.

[0024] By providing the 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 press-fit bracket.

[0025] In a possible embodiment, it further includes: a first sealing adhesive layer, and the first overlapping portion and the first connecting portion of the first press-fit bracket are sealed and connected via the first sealing adhesive layer.

[0026] By arranging the first sealing adhesive layer between the first overlapping portion and the first connecting portion of the first pressing bracket, a certain waterproof effect is achieved.

[0027] In a possible implementation, in the second direction, a surface of the first sealant layer facing the second side of the first middle frame is lower than a surface of the first overlapping portion located on the second side of the first middle frame.

[0028] By setting the surface of the first sealant layer facing the second side of the first middle frame to be lower than the surface of the first overlapping 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 does not protrude from the surface of the first overlapping portion located on the second side of the first middle frame, thereby avoiding the first sealant layer from affecting other components located on the second side of the first middle frame.

[0029] In a possible implementation, a second display screen is further included, and the second display screen is located on the second side of the first middle frame, and the second display screen is connected to the first middle frame.

[0030] By providing the second display screen and combining the first sealant layer between the first overlap portion and the first connection portion, the problem of light and shadow on the second display screen caused by excessive thickness of the first sealant layer is avoided.

[0031] In a possible embodiment, the device further includes: a first seal and a second seal, wherein the first seal and the second seal are located in the first channel and away from the rotating shaft mechanism;

[0032] The first sealing member is located between the first curved convex surface and the flexible circuit board to seal the first curved convex surface and the flexible circuit board;

[0033] The second sealing member is located between the first arc-shaped recess and the flexible circuit board to seal and connect the first arc-shaped recess and the flexible circuit board.

[0034] By arranging the first sealing member and the second sealing member in the first channel and cooperating with the flexible circuit board, the waterproof performance of the entire device is further enhanced, preventing liquid from entering the first channel and corroding the circuit.

[0035] In a possible implementation, the invention further includes: a second press-fit bracket;

[0036] The second middle frame is provided with a second opening for the second end of the flexible circuit board to pass through;

[0037] The second press-fit bracket is located at the second opening, and the second press-fit bracket is sealed and connected to an edge of the second middle frame at the second opening.

[0038] By providing a second pressing bracket, the second end of the flexible circuit board can be limited, and the second pressing bracket is sealed to the edge of the second middle frame at the second opening, so that the whole machine further has good waterproof function.

[0039] In a possible implementation, one end of the second press-fit bracket has a third connecting portion, and the second middle frame has a third overlapping portion at the second opening;

[0040] The third connecting portion is located on a side of the third overlapping portion facing the first display screen and is sealedly connected to the third overlapping portion;

[0041] Alternatively, the third connecting portion is located on a side of the third overlapping portion facing away from the first display screen and is sealed to the third overlapping portion.

[0042] By providing a third connecting portion and a third overlapping portion, a groove is opened on the side of the third overlapping portion facing the first display screen, so that the third overlapping portion and the groove form a step structure, thereby facilitating the overlapping of the third connecting portion and the third overlapping portion of the second press-fit bracket.

[0043] In a possible implementation manner, a second sealant layer is further included, and the second sealant layer is located between the third connecting portion and the third overlapping portion.

[0044] By arranging the second sealant layer between the third connecting portion and the third overlapping portion, a certain waterproof effect is achieved.

[0045] In a possible implementation, the second middle frame has a fourth overlapping portion at the second opening, and the second press-fit bracket has a fourth connecting portion;

[0046] A second channel for the second end of the flexible circuit board to pass through is provided between the fourth connecting portion and the fourth overlapping portion. The flexible circuit board passes through the second channel and is sealed and connected to the fourth connecting portion and the fourth overlapping portion.

[0047] By providing the fourth connecting portion, the second channel and the fourth overlapping portion, one side of the flexible circuit board is sealed and connected to the fourth connecting portion, and the other side of the flexible circuit board is sealed and connected to the fourth overlapping portion, further having good waterproof performance.

[0048] In a possible embodiment, the fourth overlapping portion has a second arc-shaped concave portion on a surface facing the fourth connecting portion, and the fourth connecting portion has a second arc-shaped convex surface protruding toward the second arc-shaped concave portion;

[0049] A second arc-shaped channel is formed between the second arc-shaped convex surface and the second arc-shaped concave portion.

[0050] By providing the second curved convex surface and the second curved concave portion, a second curved channel is formed between the second curved convex surface and the second curved concave portion. The second end of the flexible circuit board is inserted into the second curved channel, facilitating bending of the flexible circuit board and enhancing the bending reliability of the flexible circuit board.

[0051] In a possible embodiment, the device further includes: a third seal and a fourth seal, wherein the third seal and the fourth seal are located in the second channel and away from the rotating shaft mechanism;

[0052] The third sealing member is located between the second curved convex surface and the flexible circuit board to seal the second curved convex surface and the flexible circuit board;

[0053] The fourth sealing member is located between the second arc-shaped recess and the flexible circuit board to seal the second arc-shaped recess and the flexible circuit board.

[0054] By arranging the third sealing member and the fourth sealing member in the second channel and cooperating with the flexible circuit board, the waterproof performance of the entire device is further enhanced, preventing liquid from entering the second channel and corroding the circuit.

[0055] In a possible embodiment, there is a second redundant space between the fourth connecting portion and the fourth overlapping portion for the flexible circuit board to bend, the second redundant space is connected to the second channel, the second redundant space is close to the rotating shaft mechanism, and the flexible circuit board is bent in a W shape and arranged in the second redundant space and the second channel.

[0056] By providing the second 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 second middle frame and the second press-fit bracket.

[0057] In a possible implementation, the invention further includes: a battery cover;

[0058] The battery cover is located on a side of the second middle frame facing away from the first display screen, and the battery cover is connected to the second middle frame.

[0059] By providing the battery cover, the battery cover and the second display screen are respectively located at two ends of the rotating shaft mechanism in the first direction, so that the whole device has a good appearance.

[0060] In a possible implementation, the invention further includes: a first reinforcement portion;

[0061] The first reinforcing portion is located on at least one side of the first end of the flexible circuit board, the first reinforcing portion is located between the flexible circuit board and the first press-fit bracket, and two sides of the first reinforcing portion are respectively sealed and connected to the flexible circuit board and the first press-fit bracket;

[0062] Alternatively, the first reinforcing portion is located between the flexible circuit board and the first middle frame, and two sides of the first reinforcing portion are sealed and connected to the flexible circuit board and the first middle frame respectively.

[0063] By providing the first reinforcing portion, the strength and rigidity of the first end of the flexible circuit board can be increased, thereby preventing the first end of the flexible circuit board from being deformed or damaged during use.

[0064] In a possible implementation, the invention further includes: a second reinforcement portion;

[0065] The second reinforcing portion is located on at least one side of the second end of the flexible circuit board, the second reinforcing portion is located between the flexible circuit board and the second press-fit bracket, and two sides of the second reinforcing portion are respectively sealed and connected to the flexible circuit board and the second press-fit bracket;

[0066] Alternatively, the second reinforcing portion is located between the flexible circuit board and the second middle frame, and two sides of the second reinforcing portion are sealed and connected to the flexible circuit board and the second middle frame respectively.

[0067] By providing the second reinforcing portion, the strength and rigidity of the second end of the flexible circuit board can be increased, thereby preventing the second end of the flexible circuit board from being deformed or damaged during use.

[0068] In a possible embodiment, the first display screen has a flexible portion on a surface facing the hinge mechanism, and the flexible portion is stacked on the first display screen;

[0069] The orthographic projection of the rotating shaft mechanism toward the first display screen covers the flexible portion.

[0070] By arranging a flexible portion on the side of the first display screen facing the hinge mechanism, the bending reliability of the entire foldable electronic device is increased.

[0071] A second aspect of the present application provides a bending structure, comprising:

[0072] Rotating shaft mechanism;

[0073] a first middle frame, the first middle frame being located on one side of the rotating shaft mechanism and being rotatably connected to the rotating shaft mechanism;

[0074] A first press-fit bracket, wherein the first middle frame is provided with a first opening, the first press-fit bracket is located at the first opening, and an edge of the first middle frame provided with the first opening overlaps one end of the first press-fit bracket;

[0075] The bending structure is used to support the flexible circuit board and the first display screen.

[0076] The bending structure provided in the present application includes a hinge mechanism, a first middle frame, and a first press-fit bracket. The first middle frame is located on one side of the hinge mechanism and is rotationally connected to the hinge mechanism. The first middle frame has a first opening, and the first press-fit bracket is located at the first opening. The edge of the first middle frame having the first opening overlaps one end of the first press-fit bracket. The bending structure provided in the present application can support a flexible circuit board and a first display screen of a foldable electronic device.

[0077] 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 methods are similar and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0078] Figure 1 A schematic diagram of the overall structure of a foldable electronic device provided in an embodiment of the present application;

[0079] Figure 2A schematic diagram of the overall structure of the foldable electronic device provided in an embodiment of the present application from another angle;

[0080] Figure 3 A schematic diagram of the structure of a foldable electronic device;

[0081] Figure 4 A schematic structural diagram of a first middle frame and a flexible circuit board of a foldable electronic device provided in an embodiment of the present application;

[0082] Figure 5 An exploded schematic diagram of a first middle frame and a flexible circuit board of a foldable electronic device provided in an embodiment of the present application;

[0083] Figure 6 A schematic diagram of a portion of the structure of a foldable electronic device provided in an embodiment of the present application;

[0084] Figure 7 for Figure 4 Schematic diagram of the local cross section of AA;

[0085] Figure 8 A schematic structural diagram of a foldable electronic device in a folded state provided by an embodiment of the present application;

[0086] Figure 9 A schematic diagram of the partial structure of another foldable electronic device provided in an embodiment of the present application.

[0087] Description of reference numerals:

[0088] 100-foldable electronic devices;

[0089] 110 - flexible circuit board; 111 - first end; 112 - second end;

[0090] 113-first reinforcement portion; 114-second reinforcement portion;

[0091] 120 - shaft mechanism; 121 - shaft body; 122 - shaft back cover;

[0092] 123-first redundant space; 124-second redundant space;

[0093] 130-first middle frame; 131-first side; 132-second side;

[0094] 133 - first opening; 134 - first overlapping portion; 1341 - groove;

[0095] 135 - first sealant layer; 136 - second overlapping portion; 1361 - first arc-shaped recess;

[0096] 137-first channel; 138-first sealing member; 139-second sealing member;

[0097] 140 - second middle frame; 141 - second opening; 142 - third overlapping portion;

[0098] 143 - second sealant layer; 144 - fourth overlapping portion; 1441 - second arc-shaped recess;

[0099] 145 - second channel; 146 - third sealing member; 147 - fourth sealing member;

[0100] 150-first display screen; 151-flexible portion;

[0101] 160-first press-fit bracket; 161-first connecting portion; 162-second connecting portion;

[0102] 1621-first curved convex surface;

[0103] 170- second display screen;

[0104] 180 - second press-fit bracket; 181 - third connecting portion; 182 - fourth connecting portion;

[0105] 1821-second curved convex surface;

[0106] 190-Battery cover. DETAILED DESCRIPTION

[0107] The terms used in the implementation section of this application are only used to explain the specific embodiments of this application and are 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.

[0108] Unless the context requires otherwise, throughout the specification and claims, the term "comprise" and its other forms, such as the third person singular form "comprises" and the present participle form "comprising", are to be interpreted as open and inclusive, that is, "including, but not limited to". In the description of the specification, the terms "one embodiment", "some embodiments", "exemplary embodiments", "example" or "some examples" are intended to indicate that the particular features, structures, materials or characteristics associated with the embodiment or example are included in at least one embodiment or example of the present disclosure. The schematic representation of the above terms does not necessarily refer to the same embodiment or example. In addition, the particular features, structures, materials or characteristics may be included in any one or more embodiments or examples in any appropriate manner.

[0109] In addition, in the embodiments of the present application, directional terms such as "front" and "rear" are defined relative to the orientation of the components in the drawings. It should be understood that these directional terms are relative concepts. They are used for relative description and clarification, and they can change accordingly according to changes in the orientation of the components in the drawings.

[0110] 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 three situations: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this document generally indicates that the related objects are in an "or" relationship.

[0111] A first aspect of an embodiment of the present application provides a foldable electronic device. It can be understood that the foldable electronic device can be a mobile terminal device such as a mobile phone, a tablet computer, a laptop computer, a personal digital assistant (PDA), a smart wearable device, a point of sales (POS) terminal, etc., or the foldable electronic device can also be a fixed terminal device such as a smart TV, a router, a server, a switch, etc., and this embodiment does not limit this.

[0112] refer to Figure 1 as well as Figure 2The 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 inserted between the hinge mechanism 120. The battery may be electrically connected to the flexible circuit board. In one possible embodiment, a mobile phone is used as an example of the foldable electronic device 100. Figure 1 and Figure 2 Schematic diagrams of the overall structure of the foldable electronic device 100 are shown at two angles.

[0113] Based on the above embodiments, Figure 1 as well as Figure 2 As shown, 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 either end of the hinge mechanism 120, respectively, and the folded and unfolded states of the first middle frame 130 and the second middle frame 140 may be achieved by the rotation of the hinge mechanism 120. 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 provided on the side of the second middle frame 140 facing the battery cover 190. It is understood that the battery cover 190 and the second middle frame 140, when connected, form a hollow internal space, and the battery may be installed in the internal space.

[0114] Exemplarily, the battery cover 190 can be a metal back cover, a glass back cover, a plastic back cover, or a ceramic back cover. In the embodiment of the present application, the material of the battery cover 190 is not limited and is not limited to the above examples.

[0115] It is understood that the structures illustrated in the embodiments of the present application do not constitute a specific limitation on foldable electronic devices. In other embodiments of the present application, the foldable electronic device 100 (e.g., a mobile phone) may include more or fewer components than shown, or combine or separate certain components, or arrange the components differently. The illustrated components may be implemented in hardware, software, or a combination of software and hardware.

[0116] In order to achieve the development goal of making the thickness of the foldable electronic device 100 thinner and thinner, in the foldable electronic device 100 (such as a mobile phone), the axis area space needs to be further compressed to ensure the battery capacity of the entire device.

[0117] Figure 3 FIG. 1 is a schematic diagram of a foldable electronic device 100. Figure 3As shown, 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 hinge mechanism 120, and a flexible circuit board 110 disposed within the hinge 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 hinge 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 located on either side of the hinge mechanism 120 in a first direction, and are rotatably connected to the hinge mechanism 120. The flexible circuit board 110 is disposed within the hinge mechanism 120, with one end of the flexible circuit board 110 disposed through the first middle frame 130 and extending therefrom, and the other end of the flexible circuit board 110 disposed through the second middle frame 140 and extending therefrom.

[0118] However, Figure 3 The foldable electronic device 100 shown in FIG has the following disadvantages: Due to limitations in the manufacturing process, the first middle frame 130 of the foldable electronic device 100 may not be very thin. Given the future trend of miniaturization of foldable electronic devices 100, this is not conducive to the lightweight and thinness of the foldable electronic device 100 and the comfortable grip. Taking foldable screen phones as an example, more and more users use foldable screen phones as their primary mobile phone. However, the thickness of foldable screen phones is nearly twice that of conventional phones, resulting in a poor grip experience for users.

[0119] Furthermore, using the foldable screen mobile phone as an example, if the flexible circuit board 110 is not sealed with a glue layer in the axis-through area, a certain gap may exist between the first middle frame 130 and the flexible circuit board 110, and the waterproof function of the entire device may not be achieved. If the sealant 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.

[0120] Based on this, the embodiment of the present application provides a foldable electronic device 100, such as Figure 6 as well as Figure 7 As shown, the foldable electronic device 100 changes the mating relationship between the first middle frame 130 and the first press-fit bracket 160, thinning the first middle frame 130 to a certain thickness. A groove 1341 is then formed on the side of the first overlapping portion 134 of the first middle frame 130 facing the first display screen 150. This creates a stepped structure between the first overlapping portion 134 and the groove 1341, facilitating the overlapping of the first connecting portion 161 of the first press-fit bracket 160 with the first overlapping portion 134. A first sealant layer 135 is provided between the first connecting portion 161 and the first overlapping portion 134, providing excellent waterproof performance.

[0121] The following describes the specific structure of the foldable electronic device 100 by taking a specific embodiment as an example and referring to the accompanying drawings.

[0122] refer to Figure 1 、 Figure 2 as well as Figure 6 As shown, an embodiment of the present application provides a foldable electronic device 100, which may include a flexible circuit board 110, a hinge mechanism 120, a first middle frame 130, and a second middle frame 140. The flexible circuit board 110 may be arranged along a first direction through the hinge mechanism 120, such that a portion of the flexible circuit board 110 is located within the hinge mechanism 120. The first middle frame 130 and the second middle frame 140 are respectively located on either side of the hinge mechanism 120 in the first direction, and the first middle frame 130 and the second middle frame 140 are respectively connected to the hinge mechanism 120 for rotation.

[0123] refer to Figure 7 In a possible implementation, the flexible circuit board 110 may have a first end 111 and a second end 112, and the first middle frame 130 may have a first side 131 and a second side 132 along the second direction. Figure 4 as well as Figure 5 As shown, the first middle frame 130 may have a first opening 133 . In this embodiment of the present application, the first opening 133 allows the first end 111 of the flexible circuit board 110 to pass through, and the first opening 133 runs through the first side 131 and the second side 132 of the first middle frame 130 .

[0124] For the convenience of description, in the embodiment of the present application, the first direction is the width direction of the foldable electronic device 100, that is, Figure 2 The second direction is the thickness direction of the foldable electronic device 100, that is, Figure 2 The third direction is the length direction of the foldable electronic device 100, that is, Figure 2 The first direction, the second direction, and the third direction are perpendicular to each other.

[0125] Continue to refer Figure 7 On the basis of 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 understandable that, as Figure 8As shown, when the hinge mechanism 120 is rotated to place the foldable electronic device 100 in the folded state, the first middle frame 130 and the second middle frame 140 are arranged 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 hinge mechanism 120 is rotated to place the foldable electronic device 100 in the unfolded state, the first middle frame 130 and the second middle frame 140 are located on the same horizontal plane, and a receiving cavity is defined 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.

[0126] Continue to refer Figure 6 On the basis of the above embodiment, the foldable electronic device 100 may further include a first pressing bracket 160. Figure 4 As shown, the first press-fit bracket 160 is located at the first opening 133. In a possible embodiment, as shown in FIG. Figure 6 as well as Figure 7 As shown, one end of the first press-fit bracket 160 has a first connection portion 161. The first connection portion 161 is located on the first side 131 of the first middle frame 130 and is connected to the first side 131 of the first middle frame 130. Accordingly, the other end of the first press-fit bracket 160 can cooperate with the first middle frame 130 and be pressed against the flexible circuit board 110, thereby limiting the position of a portion of the flexible circuit board 110. In this way, by providing the first connection portion 161 to be connected to the first side 131 of the first middle frame 130, the first connection portion 161 can be positioned relative to the first side 131 of the first middle frame 130, thereby reducing the thickness of the foldable electronic device 100 in the second direction and further achieving a trend of reducing the thickness of the entire foldable electronic device 100.

[0127] Continue to refer Figure 7 Based on the above embodiment, a groove 1341 may be defined 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 may be located in the groove 1341 and overlap the bottom of the groove 1341. Thus, the first connecting portion 161 and the groove 1341 cooperate to connect the first connecting portion 161 to the first side 131 of the first middle frame 130. In this way, at least a portion of the projection of the first side 131 of the first middle frame 130 toward the first connecting portion 161 overlaps. The groove 1341 reduces the thickness of the first side 131 of the first middle frame 130 in the second direction. Furthermore, the overlap between the first connecting portion 161 and the bottom of the groove 1341 allows the first side 131 of the first middle frame 130 and the first connecting portion 161 to be offset, thereby reducing the overall thickness of the device.

[0128] Continue to refer Figure 7Based 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 the third direction. It is understandable that the groove 1341 can be provided on the side of the first overlapping portion 134 facing the first display screen 150, and the first connecting portion 161 of the first press-fit bracket 160 is located on the side of the first overlapping portion 134 facing the first display screen 150. In this way, the first connecting portion 161 and the first overlapping portion 134 can overlap and connect in the second direction. The first overlapping portion 134 cooperates with the groove 1341 to form a stepped structure, which facilitates the overlapping of the first connecting portion 161 and the first overlapping portion 134.

[0129] Continue to refer Figure 7 On the basis of the above embodiment, the foldable electronic device 100 may further include: a first sealing adhesive layer 135. The first overlapping portion 134 and the first connecting portion 161 of the first pressing bracket 160 may be sealed and connected by the first sealing adhesive layer 135. In the embodiment of the present application, the first overlapping portion 134 and the first connecting portion 161 may be directly glued, or the first overlapping portion 134 and the first connecting portion 161 may be connected by other adhesives, thereby achieving the connection between the first middle frame 130 and the first pressing bracket 160. It can be understood that the first sealing adhesive layer 135 has a certain waterproof effect.

[0130] Continue to refer Figure 7 Based on the above embodiment, in the second direction, the surface 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 surface 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 relatively thin and does not protrude beyond the surface of the first overlapping portion 134 located on the second side 132 of the first middle frame 130, thereby preventing the first sealant layer 135 from affecting other components located on the second side 132 of the first middle frame 130.

[0131] Continue to refer Figure 7On the basis of the above embodiment, 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 the second display screen 170 is connected to the first middle frame 130. In the embodiment of the present application, it can be understood that if the thickness of the first sealant layer 135 is too thick, that is, the surface 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, in the second direction, the first sealant layer 135 has a certain external force toward the second display screen 170. When the human eye observes the second display screen 170 at a certain angle, the second display screen 170 may have wavy lines, resulting in light and shadow problems on the second display screen 170 of the foldable electronic device 100.

[0132] It is understood that in order to further reduce the thickness of the foldable electronic device 100 in the second direction, the thickness of the first middle frame 130 in the second direction is also reduced. When the thickness of the first middle frame 130 is reduced to the same height as the first press-fit bracket 160, the first sealant layer 135 may protrude beyond the surface of the first overlapping portion 134 located on the second side 132 of the first middle frame 130, which may easily cause light and shadow issues on the second display screen 170. If the thickness of the first middle frame 130 is further reduced to reduce the overall thickness, the manufacturability and processability of the first middle frame 130 cannot be met, and the manufacturing process is difficult to implement. Therefore, after the thickness of the first middle frame 130 is reduced 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. The first overlapping portion 134 and the groove 1341 form a stepped structure, thereby facilitating the overlapping of the first connecting portion 161 with the first overlapping portion 134. Thus, 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 workability of the first middle frame 130. Furthermore, the location of the first sealant layer 135 can achieve the waterproofing requirement of the foldable electronic device 100.

[0133] Continue to refer Figure 7On the basis of the above embodiment, the first press-fit 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 embodiment, a first channel 137 is provided between the second connecting portion 162 and the second overlapping portion 136. The first channel 137 is provided for the first end 111 of the flexible circuit board 110 to pass through, so that the flexible circuit board 110 can pass through the first channel 137 and be sealed and connected to the second connecting portion 162 and the second overlapping portion 136. It can be understood that at least part 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, and the other side of the flexible circuit board 110 is sealed and connected to the second overlapping portion 136, further having good waterproof performance.

[0134] Continue to refer Figure 7 On the basis of the above embodiment, in one possible implementation manner, the second overlapping portion 136 may have a first arc-shaped recess 1361 on a surface facing the second connecting portion 162. Accordingly, as shown in FIG. Figure 7 As shown, the second connecting portion 162 has a first curved convex surface 1621 that protrudes toward the first curved concave portion 1361. Thus, the first curved concave portion 1361 can mate with the first curved convex surface 1621, thereby forming an arc-shaped first channel 137 between the first curved convex surface 1621 and the first curved concave portion 1361. The first end 111 of the flexible circuit board 110 is inserted into 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.

[0135] Continue to refer Figure 7 Based on the above embodiment, the foldable electronic device 100 may further include a first seal 138 and a second seal 139. The first seal 138 and the second seal 139 are located within the first channel 137 and away from the hinge mechanism 120. In this embodiment, the first seal 138 can be located between the first curved convex surface 1621 and the flexible circuit board 110 to seal the first curved 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 seal 139 can be located between the first curved concave portion 1361 and the flexible circuit board 110 to seal the first curved concave portion 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 provision of the first seal 138 and the second seal 139 further enhances the waterproof performance of the entire device.

[0136] It is understood that during the rotation of the hinge mechanism 120, liquid may enter the interior of the device from the hinge mechanism 120. In the embodiment of the present application, the first connection portion 161 of the first press-fit bracket 160, facing the second display screen 170, is sealed to the first overlap portion 134 via a first sealant layer 135. The second connection portion 162 of the first press-fit bracket 160, facing the first display screen 150, is sealed to the flexible circuit board 110 via a first sealant 138. The second overlap portion 136 is sealed to the flexible circuit board 110 via a second sealant 139. Thus, under certain depths and pressures, liquid will not enter the interior of the device from the hinge mechanism 120, preventing liquid from entering the first channel 137 and corroding the circuit board.

[0137] Continue to refer Figure 7 In addition to the above embodiment, a first redundant space 123 may be provided between the second connecting portion 162 and the second overlapping portion 136 to accommodate bending of the flexible circuit board 110. The first redundant space 123 is connected to the first channel 137 and is located near the hinge mechanism 120. It will be appreciated that the first end 111 of the flexible circuit board 110 is inserted through the hinge mechanism 120, then passes through the first channel 137 along the first redundant space 123, and finally extends out of the first channel 137. The provision of the first redundant space 123 can prevent distortion and noise during bending of the flexible circuit board 110.

[0138] It is understood that the first middle frame 130 is provided with a second overlap portion 136 at the first opening 133, so that the flexible circuit board 110 bypasses the second overlap portion 136 and passes through the first channel 137, and the flexible circuit board 110 is arranged in a bent shape. In addition, the setting of the first redundant space 123 enables the flexible circuit board 110 to bend to a greater extent. In this way, combined with Figure 7 From a perspective, the flexible circuit board 110 may be bendably disposed in the first redundant space 123 and the first channel 137 in a W-shape.

[0139] Continue to refer Figure 7 Based on the above embodiment, the foldable electronic device 100 may further include a second press-fit bracket 180. A second opening 141 may be defined 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 press-fit bracket 180 is located at the second opening 141. It is understood that the second press-fit bracket 180 is sealed to the edge of the second middle frame 140 at the second opening 141, thereby providing excellent waterproofing.

[0140] In one possible embodiment, one end of the second press-fit bracket 180 may have a third connection portion 181. The third connection portion 181 is sealed to the edge of the second middle frame 140 at the second opening 141. Accordingly, the other end of the second press-fit bracket 180 can mate with the second middle frame 140 and be pressed against the flexible circuit board 110, thereby retaining a portion of the flexible circuit board 110. In this way, the first press-fit bracket 160 is pressed against the first end 111 of the flexible circuit board 110, and the second press-fit bracket 180 is pressed against the second end 112 of the flexible circuit board 110. The central area of the flexible circuit board 110 is located within the hinge mechanism 120, facilitating the placement of the entire flexible circuit board 110 within the internal structure of the device. Furthermore, by providing the third connection portion 181 connected 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 trend toward a thinner overall thickness of the foldable electronic device 100.

[0141] Continue to refer Figure 7 Based on the above embodiment, a groove 1341 may also be provided on the second middle frame 140 at a position facing the third connecting portion 181. The groove 1341 provided on the second middle frame 140 may be the same as the groove 1341 provided 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 the bottom of the groove 1341, thereby achieving connection between the third connecting portion 181 and the edge of the second middle frame 140 at the second opening 141 through the cooperation between the third connecting portion 181 and the groove 1341. In this way, the edge of the second middle frame 140 at the second opening 141 overlaps with at least part of the projection of the third connecting portion 181. The edge of the second middle frame 140 at the second opening 141 reduces the thickness of the second middle frame 140 in the second direction by providing the groove 1341, and the third connecting portion 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 portion 181 are staggered, thereby reducing the thickness of the entire device.

[0142] Continue to refer Figure 7On the basis of the above embodiment, the second middle frame 140 has a third overlapping portion 142 at the second opening 141. It can be understood that the groove 1341 can be opened on the side of the third overlapping portion 142 facing the first display screen 150, and the third connecting portion 181 of the second press-fit 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 and connected to the third overlapping portion 142. In this way, the third connecting portion 181 and the third overlapping portion 142 can be overlapped and connected in the second direction. The third overlapping portion 142 cooperates with the groove 1341 to form a step structure, which facilitates the overlapping of the third connecting portion 181 and the third overlapping portion 142.

[0143] Continue to refer Figure 7 On the basis of the above embodiment, the foldable electronic device 100 may further include: a second sealing adhesive layer 143. The second sealing adhesive layer 143 may be located between the third connecting portion 181 and the third overlapping portion 142, so that the third overlapping portion 142 and the third connecting portion 181 are sealed and connected through the second sealing adhesive layer 143. In the embodiment of the present application, the third overlapping portion 142 and the third connecting portion 181 can be directly glued, and the third overlapping portion 142 and the third connecting portion 181 can also be connected by other adhesives, thereby realizing the connection between the second middle frame 140 and the second press-fit bracket 180. It can be understood that the second sealing adhesive layer 143 has a certain waterproof effect, which can prevent liquid from entering the interior of the entire machine along the overlapping portion between the third overlapping portion 142 and the third connecting portion 181.

[0144] Continue to refer Figure 7 Based on the above embodiment, the second press-fit bracket 180 may further include a fourth connection portion 182. Accordingly, the second middle frame 140 may include a fourth overlap portion 144 at the second opening 141. In one possible embodiment, a second channel 145 may be provided between the fourth connection portion 182 and the fourth overlap portion 144. The second channel 145 allows the second end 112 of the flexible circuit board 110 to pass through. Thus, the second end 112 of the flexible circuit board 110 can pass through the second channel 145 and be sealedly connected to the fourth connection portion 182 and the fourth overlap portion 144. It is understood that at least a portion of the flexible circuit board 110 is located between the fourth overlap portion 144 and the fourth connection portion 182, and one surface of the second end 112 of the flexible circuit board 110 is sealedly connected to the fourth connection portion 182, while the other surface of the second end 112 of the flexible circuit board 110 is sealedly connected to the fourth overlap portion 144. This further provides excellent waterproof performance, preventing liquid from entering the interior of the device along the second end 112 of the flexible circuit board 110.

[0145] Continue to refer Figure 7Based on the above embodiment, in one possible implementation, the fourth overlapping portion 144 may have a second arcuate recess 1441 on the surface facing the fourth connecting portion 182. Accordingly, the fourth connecting portion 182 may have a second arcuate convex surface 1821 that protrudes toward the second arcuate recess 1441. In this way, 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 is inserted into the arcuate second channel 145, facilitating bending of the flexible circuit board 110 and enhancing the bending reliability of the flexible circuit board 110.

[0146] Continue to refer Figure 7 Based on the above embodiment, the foldable electronic device 100 may further include a third seal 146 and a fourth seal 147. The third seal 146 and the fourth seal 147 are located within the second channel 145 and away from the hinge mechanism 120. In this embodiment, the third seal 146 can be located between the second curved convex surface 1821 and the flexible circuit board 110 to seal the connection between the second curved 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 seal 147 can be located between the second curved concave portion 1441 and the flexible circuit board 110 to seal the connection between the second curved concave portion 1441 and the flexible circuit board 110, thereby achieving a sealed connection between the fourth overlapping portion 144 and the flexible circuit board 110. The provision of the third seal 146 and the fourth seal 147 further enhances the waterproof performance of the entire device.

[0147] In the embodiment of the present application, the third connection portion 181 of the second press-fit bracket 180 is sealed to the third overlap portion 142 via a second sealant layer 143. The fourth connection portion 182 of the second press-fit bracket 180, on the side facing the first display screen 150, is sealed to the flexible circuit board 110 via a third sealant 146. Furthermore, the fourth overlap portion 144 is sealed to the flexible circuit board 110 via a fourth sealant 147. Thus, at a certain depth and pressure, liquid will not enter the interior of the device through the hinge mechanism 120, preventing liquid from entering the second channel 145 and corroding the circuit board.

[0148] Continue to refer Figure 7In addition to the above embodiment, a second redundant space 124 may be provided between the fourth connecting portion 182 and the fourth overlapping portion 144, allowing the flexible circuit board 110 to bend. The second redundant space 124 is connected to the second channel 145 and may be positioned adjacent to the hinge mechanism 120, thereby positioning the first redundant space 123 and the second redundant space 124 on either side of the hinge mechanism 120. It will be appreciated that the second end 112 of the flexible circuit board 110 passes through the hinge mechanism 120, then along the second redundant space 124, through the second channel 145, and finally out of the second channel 145. The provision of the second redundant space 124 also prevents distortion and noise from occurring when the flexible circuit board 110 is bent.

[0149] It can be understood that the contoured design of the peripheral structural parts such as the first middle frame 130 and the first press-fit bracket 160 as well as the second middle frame 140 and the second press-fit bracket 180 can eliminate the abnormal bending noise generated by the flexible circuit board 110 during the bending process, and avoid the morphological distortion of the flexible circuit board 110, thereby ensuring that the flexible circuit board 110 can be bent within the space defined by the first middle frame 130 and the first press-fit bracket 160 as well as the second middle frame 140 and the second press-fit bracket 180.

[0150] It can also be understood that the second middle frame 140 is provided with a fourth overlap portion 144 at the second opening 141, so that the flexible circuit board 110 bypasses the fourth overlap portion 144 and passes through the second channel 145, and the flexible circuit board 110 is arranged in a bent shape. In addition, the provision of the second redundant space 124 enables the flexible circuit board 110 to bend to a greater extent. In this way, combined with Figure 7 From a perspective, the flexible circuit board 110 may be bendably disposed in the second redundant space 124 and the second channel 145 in a W-shape.

[0151] Continue to refer Figure 2 On the basis of the above embodiment, the foldable electronic device 100 may further include: a battery cover 190. Figure 1From a holographic perspective, the battery cover 190 can 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 embodiment, the battery cover 190 and the second display screen 170 can be located at opposite ends of the hinge mechanism 120 in the first direction. It is understood that when the hinge mechanism 120 is rotated to put the foldable electronic device 100 into the folded state, the battery cover 190 and the second display screen 170 are arranged 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 to put the foldable electronic device 100 into the unfolded state, the battery cover 190 and the second display screen 170 can be located on the same horizontal plane. When the battery cover 190 and the second display screen 170 are located on the same plane, the overall dimensions of the battery cover 190 and the second display screen 170 can be the same as the dimensions of the first display screen 150, so that the entire device has a good appearance.

[0152] Continue to refer Figure 7 Based on the above embodiment, the foldable electronic device 100 may further include a first reinforcement portion 113. The first reinforcement 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 reinforcement portion 113 may be located between the flexible circuit board 110 and the first press-fit bracket 160, with both sides of the first reinforcement portion 113 being sealed to the flexible circuit board 110 and the first press-fit bracket 160, respectively.

[0153] Alternatively, in another possible embodiment, the first reinforcing portion 113 may be located between the flexible circuit board 110 and the first middle frame 130, with both sides of the first reinforcing portion 113 being sealedly connected 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 of which is located between the flexible circuit board 110 and the first press-fit bracket 160, with both sides of the first reinforcing portion 113 being sealedly connected to the flexible circuit board 110 and the first press-fit bracket 160, respectively. Another first reinforcing portion 113 is located between the flexible circuit board 110 and the first middle frame 130, with both sides of the first reinforcing portion 113 being sealedly connected to the flexible circuit board 110 and the first middle frame 130, respectively. The present embodiment does not limit the number or location of the first reinforcing portions 113.

[0154] Continue to refer Figure 7Based on the above embodiment, the foldable electronic device 100 may further include a second reinforcement portion 114. The second reinforcement portion 114 may be located on at least one side of the second end 112 of the flexible circuit board 110. In one embodiment, the second reinforcement portion 114 may be located between the flexible circuit board 110 and the second press-fit bracket 180, with both sides of the second reinforcement portion 114 being sealed to the flexible circuit board 110 and the second press-fit bracket 180, respectively.

[0155] Alternatively, in another possible embodiment, the second reinforcing portion 114 can be located between the flexible circuit board 110 and the second middle frame 140, with both sides of the second reinforcing portion 114 being sealedly connected to the flexible circuit board 110 and the second middle frame 140, respectively. Of course, in some other embodiments, there can be two second reinforcing portions 114, one of which is located between the flexible circuit board 110 and the second press-fit bracket 180, with both sides of the second reinforcing portion 114 being sealedly connected to the flexible circuit board 110 and the second press-fit bracket 180, respectively. Another second reinforcing portion 114 is located between the flexible circuit board 110 and the second middle frame 140, with both sides of the second reinforcing portion 114 being sealedly connected to the flexible circuit board 110 and the second middle frame 140, respectively. The embodiment of the present application does not limit the number and location of the second reinforcing portions 114.

[0156] It is understood that the first and second reinforcing portions 113, 114 can be used to increase the strength and rigidity of the flexible circuit board 110, preventing deformation or damage to the flexible circuit board 110 during use. Specifically, the first and second reinforcing portions 113, 114 can disperse and transfer stress, reducing concentrated stress points, thereby extending the service life of the flexible circuit board 110.

[0157] Continue to refer Figure 6 Based on the above embodiment, the first display screen 150 may have a flexible portion 151 on the side facing the hinge mechanism 120, and the flexible portion 151 may be formed by stacking multiple flexible layers, so that the flexible portion 151 can be stacked on the first display screen 150. In one possible implementation, the area where the flexible portion 151 is located on the first display screen 150 can be located on the side of the hinge mechanism 120 facing the first display screen 150, and the orthographic projection of the hinge mechanism 120 facing the first display screen 150 can cover the flexible portion 151. In this way, the bending reliability of the entire foldable electronic device 100 can be increased. It is understandable that the flexible portion 151 can be bent or stretched similar to the structure of a bamboo book. In some embodiments, the flexible portion 151 can have different structures, shapes, sizes, and the number of stacked flexible layers, and the flexible portion 151 can be set according to the different requirements of the foldable electronic device 100.

[0158] refer to Figure 8 , Figure 8 This is a schematic diagram of the foldable electronic device 100 in a folded state according to an embodiment of the present application. The first middle frame 130 and the second middle frame 140 are bent toward one side of the first display screen 150 by the hinge mechanism 120, thereby placing the foldable electronic device 100 in a folded state.

[0159] refer 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 embodiment, both ends of the hinge back cover 122 may be positioned toward the first display screen 150, with a gap between the hinge body 121 and the hinge back cover 122 allowing 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 is connected to the second middle frame 140. It is understood that when the flexible circuit board 110 is positioned at both ends of the hinge back cover 122, it can be positioned close to the first display screen 150. When the flexible circuit board is positioned in 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 form a W-shape within the hinge mechanism 120, providing excellent bending properties.

[0160] Based on the above embodiment, the foldable electronic device 100 may further include a first housing and a second housing. The first housing includes a first middle frame 130 and a second display screen 170, and the second housing includes a second middle frame 140 and a battery cover 190. The first and second housings are located at opposite ends of a hinge mechanism 120, and the hinge mechanism 120 rotates to achieve a folded and unfolded state.

[0161] It is understood that by providing a groove 1341 on the side of the first overlapping portion 134 facing the first display screen 150, the first overlapping portion 134 and the groove 1341 form a stepped structure, which facilitates the overlapping of the first connecting portion 161 and the first overlapping portion 134, thereby positioning the first press-fit bracket 160 toward the first middle frame 130 in the first direction. Furthermore, by providing a groove 1341 on the side of the third overlapping portion 142 facing the first display screen 150, the third overlapping portion 142 and the groove 1341 form a stepped structure, which facilitates the overlapping of the third connecting portion 181 and the third overlapping portion 142, thereby positioning the second press-fit bracket 180 toward the second middle frame 140 in the first direction. In this way, space can be provided in the first direction to a certain extent for the battery inside the entire device, thereby rationalizing the internal structure of the foldable electronic device 100.

[0162] Taking into account the stacking state of the entire foldable electronic device 100, people have different requirements for the thickness of the first shell and the second shell in the foldable electronic device 100 in the second direction. Since there is no display screen on the second shell, the thickness requirement for the second shell in the second direction is lower than the thickness requirement for the first shell in the second direction.

[0163] refer to Figure 9 In another possible embodiment, the third connection 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 connection portion 181 and the third overlapping portion 142 are sealed and connected by the second sealant layer 143. A groove 1341 can be provided on the second middle frame 140 at a position facing the third connection portion 181, and the groove 1341 can be provided on the side of the third overlapping portion 142 facing the battery cover 190. In this way, the third connection portion 181 and the third overlapping portion 142 can be overlapped and connected in the second direction. The third overlapping portion 142 cooperates with the groove 1341 to form a step structure, which facilitates the overlapping of the third connection portion 181 and the third overlapping portion 142.

[0164] It can be understood that since the second shell 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 portion 142 facing the battery cover 190, and the second sealant layer 143 will not affect other components located in the second middle frame 140.

[0165] Depending on the thickness requirements of the foldable electronic device 100 in the second direction, and provided that the overall thickness of the device is sufficient, in another possible embodiment, the first connecting portion 161 can 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 via the first sealant layer 135. Accordingly, 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 via the second sealant layer 143. It is understood that the side of the first sealant layer 135 facing the second display screen 170 can 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 sealant layer 143 facing the battery cover 190 can be flush with or higher than the side of the third overlapping portion 142 facing the battery cover 190. These can be configured according to actual needs.

[0166] The second aspect of the embodiment of the present application provides a bending structure. The bending structure may include: a hinge mechanism 120, a first middle frame 130 and a first pressing bracket 160. Among them, the first middle frame 130 can be located on one side of the hinge mechanism 120 and is rotatably connected to the hinge mechanism 120. In one possible embodiment, a first opening 133 is provided on the first middle frame 130, and the first pressing bracket 160 can be located at the first opening 133, and the edge of the first middle frame 130 where the first opening 133 is provided overlaps with one end of the first pressing bracket 160. It can be understood that the bending structure can be used to support the flexible circuit board 110 and the first display screen 150 in the above-mentioned foldable electronic device 100.

[0167] In the description of the embodiments of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to a fixed connection, an indirect connection via an intermediate medium, internal communication between two components, or an interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of this application based on specific circumstances.

[0168] The terms "first", "second", "third", "fourth", etc. (if any) in the specification and claims of the embodiments of the present application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the application described herein can, for example, be implemented in an order other than those illustrated or described herein. In addition, the terms "may include" and "have" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0169] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the embodiments of the present application, rather than to limit them. Although the embodiments of the present application have been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents, and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A foldable electronic device (100), characterized in that: include: A flexible circuit board (110) having a first end (111) and a second end (112); A rotating shaft mechanism (120), wherein the flexible circuit board (110) is passed through the rotating shaft mechanism (120) along a first direction; a first middle frame (130), the first middle frame (130) having a first side (131) and a second side (132) along a second direction, a first opening (133) being provided on the first middle frame (130), the first opening (133) being capable of allowing the first end (111) of the flexible circuit board (110) to pass through and extending through the first side (131) and the second side (132); a second middle frame (140), wherein the first middle frame (130) and the second middle frame (140) are respectively located on both sides of the rotating shaft mechanism (120) and are rotatably connected to the rotating shaft mechanism (120); a first display screen (150), the first display screen (150) being located on one side of the first middle frame (130), the second middle frame (140) and the rotating shaft mechanism and being connected to the first middle frame (130), the second middle frame (140) and the rotating shaft mechanism (120), and the first side (131) of the first middle frame (130) facing the first display screen (150); A first pressing bracket (160), the 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 is connected to the first side (131) of the first middle frame (130), and the other end of the first pressing bracket (160) is matched with the first middle frame (130) and 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) and at a position facing the first connecting portion (161); at least a portion of the first connecting portion (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), and the first overlapping portion (134) extends along the third direction. The first overlapping portion (134) is provided with 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) are overlapped and connected in the second direction.

4. The foldable electronic device (100) according to any one of claims 1 to 3, characterized in that: The first pressing bracket (160) further 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 concave portion (1361) on a surface facing the second connecting portion (162), and the second connecting portion (162) has a first arc-shaped convex surface (1621) protruding toward the first arc-shaped concave portion (1361); The first arc-shaped 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 A first redundant space (123) is provided between the second connecting portion (162) and the second overlapping portion (136) for the flexible circuit board (110) to bend. The first redundant space (123) is communicated with 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 arranged 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: A first sealing adhesive layer (135), wherein the first overlapping portion (134) and the first connecting portion (161) of the first pressing bracket (160) are sealed and connected to each other via the first sealing adhesive layer (135).

8. The foldable electronic device (100) according to claim 7, characterized in that In the second direction, a surface of the first sealant layer (135) facing the second side (132) of the first middle frame (130) is lower than a surface of the first overlapping portion (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 to 3, characterized in that: It also includes a second display screen (170), wherein the second display screen (170) is located on the second side (132) of the first middle frame (130), and the second display screen (170) 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 sealing member (138) and a second sealing member (139), wherein the first sealing member (138) and the second sealing member (139) are located in the first channel (137) and away from the rotating shaft mechanism (120); The first sealing member (138) is 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); The second sealing member (139) is 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).

11. The foldable electronic device (100) according to any one of claims 1 to 3, characterized in that: Also includes: A second press-fit bracket (180); The second middle frame (140) is provided with a second opening (141) 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 and connected 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 One end of the second pressing bracket (180) has a third connecting portion (181), and the second middle frame (140) has a third overlapping portion (142) at the second opening (141); The third connecting portion (181) is located on a side of the third overlapping portion (142) facing the first display screen (150) and is sealed and connected to the third overlapping portion (142); Alternatively, the third connecting portion (181) is located on a side of the third overlapping portion (142) facing away from the first display screen (150) and is sealedly connected to the third overlapping portion (142).

13. The foldable electronic device (100) according to claim 12, characterized in that: It also includes a second sealing adhesive layer (143), and the second sealing adhesive layer (143) is located between the third connecting portion (181) and the third overlapping 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 press-fit bracket (180) has a fourth connecting portion (182); A second channel (145) is provided between the fourth connecting portion (182) and the fourth overlapping portion (144), through which the second end (112) of the flexible circuit board (110) can pass. The flexible circuit board (110) passes through the second channel (145) and is sealed and connected to the fourth connecting portion (182) and the fourth overlapping portion (144).

15. The foldable electronic device (100) according to claim 14, characterized in that The fourth overlapping portion (144) has a second arc-shaped concave portion (1441) on one surface facing the fourth connecting portion (182), and the fourth connecting portion (182) has a second arc-shaped convex surface (1821) protruding toward the second arc-shaped concave portion (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: a third sealing member (146) and a fourth sealing member (147), wherein the third sealing member (146) and the fourth sealing member (147) are located in the second channel (145) and away from the rotating shaft mechanism (120); The third sealing member (146) is located between the second arc-shaped convex surface (1821) and the flexible circuit board (110) to seal and connect the second arc-shaped convex surface (1821) and the flexible circuit board (110); The fourth sealing member (147) is located between the second arc-shaped recess (1441) and the flexible circuit board (110) to seal and connect 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 to 16, characterized in that: A second redundant space (124) is provided between the fourth connecting portion (182) and the fourth overlapping portion (144) for the flexible circuit board (110) to bend. The second redundant space (124) is communicated with 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 arranged in the second redundant space (124) and the second channel (145).

18. The foldable electronic device (100) according to any one of claims 1 to 3, characterized in that: Also includes: Battery cover (190); The battery cover (190) is located on a 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 to 3, characterized in that: Also includes: a first reinforcement portion (113); The first reinforcing portion (113) is located on at least one side of the first end (111) of the flexible circuit board (110), the first reinforcing portion (113) is located between the flexible circuit board (110) and the first pressing bracket (160), and both sides of the first reinforcing portion (113) are sealedly connected to the flexible circuit board (110) and the first pressing bracket (160) respectively; Alternatively, the first reinforcing portion (113) is located between the flexible circuit board (110) and the first middle frame (130), and two sides of the first reinforcing portion (113) are sealed and connected to the flexible circuit board (110) and the first middle frame (130), respectively.

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

21. The foldable electronic device according to any one of claims 1 to 3, characterized in that: The first display screen has a flexible portion on a surface facing the hinge mechanism, and the flexible portion is stacked on the first display screen; The orthographic projection of the rotating shaft mechanism toward the first display screen covers the flexible portion.

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

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