Foldable electronic device

Abstract

The embodiment of the present application provides a foldable electronic device. A through-axis flexible circuit board and a first adapter circuit board are combined to connect the devices located in the first shell and the second shell respectively. The through-axis flexible circuit board spans the hinge mechanism. The first adapter circuit board is arranged in the first shell. The first end of the through-axis flexible circuit board passes through the first through hole of the first shell and is electrically connected to the first adapter circuit board. The first annular sealing assembly is arranged around the connection between the through-axis flexible circuit board and the first adapter circuit board. The first annular sealing assembly forms a complete sealing path for the first end of the through-axis flexible circuit board, which can achieve dust and water resistance in the X and Y directions at the first through hole of the first shell, isolate the inside of the first shell from the outside, and in the case of limited space, make the first end of the through-axis flexible circuit board reach IPX7 and above dust and water resistance. During the opening and closing process of the first shell and the second shell, the through-axis flexible circuit board can remain reliably fixed in the first shell.

Description

Technical Field

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

[0002] A foldable electronic device with a flexible screen can provide a large display area when unfolded, and the overall structure is compact and easy to store after folding. The foldable electronic device includes a hinge mechanism and shells respectively arranged on both sides of the hinge mechanism, and the two shells can be rotated relative to the hinge mechanism to make the two shells relatively unfolded or folded. Printed circuit boards or other devices are arranged in the two shells, and the devices in the two shells can be electrically connected through a through-axis flexible circuit board. The through-axis flexible circuit board passes through the hinge mechanism, and the two ends of the through-axis flexible circuit board are respectively inserted into the two shells and connected to the corresponding devices. The shells in existing foldable electronic devices are prone to dust or water ingress at the position where the through-axis flexible circuit board passes, causing failure of the devices in the shells. Summary of the invention

[0003] An embodiment of the present application provides a foldable electronic device, which solves the problem in existing foldable electronic devices that dust or water easily enters the housing at the position where the through-axis flexible circuit board passes, causing failure of components in the housing.

[0004] In order to achieve the above purpose, the embodiment of the present application adopts the following technical solution:

[0005] In a first aspect, an embodiment of the present application provides a foldable electronic device, comprising: a hinge mechanism, a first shell, a second shell, a through-axis flexible circuit board, a first adapter circuit board, and a first annular sealing assembly. The first shell and the second shell are respectively rotatably connected to the two sides of the hinge mechanism so that the first shell and the second shell can be relatively unfolded or relatively folded. The first shell has a first via hole. The first adapter circuit board is arranged in the first shell. The middle part of the through-axis flexible circuit board spans the hinge mechanism, the first end of the through-axis flexible circuit board is arranged in the first via hole and is electrically connected to the first adapter circuit board, and the second end of the through-axis flexible circuit board extends to the second shell. The first annular sealing assembly is arranged around the connection between the through-axis flexible circuit board and the first adapter circuit board, and is used to seal the gap between the first end of the through-axis flexible circuit board and the first via hole.

[0006] The foldable electronic device provided in the embodiment of the present application adopts a through-axis flexible circuit board and a first adapter circuit board to connect the devices respectively located in the first shell and the second shell. The through-axis flexible circuit board spans the hinge mechanism, and the first adapter circuit board is arranged in the first shell. The first end of the through-axis flexible circuit board passes through the first through hole of the first shell and is electrically connected to the first adapter circuit board. The first annular sealing component is arranged around the connection between the through-axis flexible circuit board and the first adapter circuit board. The first annular sealing component forms a complete sealing path for the first end of the through-axis flexible circuit board, which can achieve dust and water resistance in the X and Y directions at the first through hole of the first shell, isolate the inside of the first shell from the outside, and make the first end of the through-axis flexible circuit board reach IPX7 and above dust and water resistance in the case of limited space. During the opening and closing process of the first shell and the second shell, the through-axis flexible circuit board can remain reliably fixed in the first shell.

[0007] In combination with the first aspect, in a first possible implementation of the first aspect, the first end of the through-axis flexible circuit board is electrically connected to the first adapter circuit board through the first connector, and the first annular sealing component is arranged around the first connector. By arranging the first connector between the through-axis flexible circuit board and the first adapter circuit board, a certain distance is formed between the through-axis flexible circuit board and the first adapter circuit board in the thickness direction to place the first annular sealing component, a complete sealed and waterproof path for the first end of the through-axis flexible circuit board is formed at the first through hole of the first housing, and the electrical connection between the through-axis flexible circuit board and the first adapter circuit board is achieved.

[0008] In combination with the first aspect or the first possible implementation of the first aspect, in a second possible implementation of the first aspect, the same side of the first annular sealing assembly is attached to the first end of the through-shaft flexible circuit board and the first shell, and the first annular sealing assembly has a compact structure and is easy to assemble. The first annular sealing assembly forms a complete sealing path for the first end of the through-shaft flexible circuit board, thereby isolating the interior of the first shell from the outside.

[0009] In combination with the second possible implementation of the first aspect, in a third possible implementation of the first aspect, the first annular sealing assembly includes an annular sealant and an annular rigid plate, and the annular rigid plate is attached to the first end of the through-axis flexible circuit board and the first shell through the annular sealant. The annular rigid plate is fixed to the first end of the through-axis flexible circuit board and the first shell by an annular sealant. The annular sealant and the annular rigid plate form a complete sealing path for the first end of the through-axis flexible circuit board, and external dust or water cannot enter the first shell through the first through hole of the first shell, so that the devices in the first shell are effectively protected. The use of an annular rigid plate with a certain rigidity can reduce the pushing effect of the first annular sealing assembly due to excessive deformation of the through-axis flexible circuit board to a certain extent, thereby improving the sealing effect of the first annular sealing assembly.

[0010] In combination with the third possible implementation of the first aspect, in a fourth possible implementation of the first aspect, the annular sealant is an integrated layered structure, for example, using adhesive backing, and this assembly method is easy to operate.

[0011] In combination with the third possible implementation of the first aspect, in a fifth possible implementation of the first aspect, the annular sealant includes a first annular sealant and a second annular sealant, the second annular sealant is located radially outside the first annular sealant, the first end of the through-shaft flexible circuit board and the inner ring area of ​​the annular rigid plate are bonded by the first annular sealant, and the first shell and the outer ring area of ​​the annular rigid plate are bonded by the second annular sealant. This method can reduce the use of colloid materials and the dimensional tolerance is easy to control.

[0012] In combination with any one of the first aspect to the fifth possible implementation of the first aspect, in a sixth possible implementation of the first aspect, the first end of the through-axis flexible circuit board is configured as a planar extension portion, and the planar extension portion is electrically connected to the first adapter circuit board. After the first end of the through-axis flexible circuit board penetrates the first through hole of the first housing, it is connected to the first adapter circuit board in the form of a planar extension portion, thereby achieving electrical connection between the through-axis flexible circuit board and the first adapter circuit board.

[0013] In combination with any one of the first aspect to the fifth possible implementation of the first aspect, in a seventh possible implementation of the first aspect, the first end of the through-axis flexible circuit board is configured as a bending portion, and the bending portion is electrically connected to the first adapter circuit board. When the first via hole is disposed at a position of the first housing close to the hinge mechanism, the first end of the through-axis flexible circuit board and the first adapter circuit board are disposed closer to the hinge mechanism, so that the first housing can form a larger space in the X direction to accommodate more devices on the first housing.

[0014] In combination with the seventh possible implementation of the first aspect, in an eighth possible implementation of the first aspect, a terminal end of the bending portion is supported on the first shell, and the other end of the bending portion is supported on the first shell through a support assembly. Two support positions are provided for the bending portion on a plane to achieve reliable support of the bending portion.

[0015] In combination with the eighth possible implementation of the first aspect, in a ninth possible implementation of the first aspect, the bending portion includes a first plane portion, a transition connection portion, and a second plane portion connected in sequence, the first plane portion and the second plane portion are arranged at intervals, the first plane portion extends into the first via hole, the end of the second plane portion away from the transition connection portion serves as the end of the bending portion and is supported on the first shell, and the second plane portion is electrically connected to the first adapter circuit board. The supporting assembly includes a first gasket and a second gasket, the first gasket and the second gasket are respectively located on both sides of the first plane portion, the two sides of the first gasket are respectively connected to the second plane portion and the first plane portion, and the two sides of the second gasket are respectively connected to the first plane portion and the first shell. The first plane portion is supported on the first shell through the second gasket, and the second plane portion is supported on the first plane portion through the first gasket, so that the portion of the bending portion away from its end can be supported.

[0016] In combination with the eighth possible implementation of the first aspect, in the tenth possible implementation of the first aspect, the bending portion includes a first planar portion, a transition connection portion, and a second planar portion connected in sequence, the first planar portion and the second planar portion are arranged at intervals, the first planar portion extends into the first via hole, the end of the second planar portion away from the transition connection portion serves as the end of the bending portion and is supported on the first shell, and the second planar portion is electrically connected to the first adapter circuit board. The support assembly includes a first gasket, the two sides of the first gasket are respectively connected to the second planar portion and the first planar portion, and the side of the first planar portion facing away from the first gasket is connected to the first shell. In this way, the part of the bending portion away from the rotating shaft mechanism can be supported, and protection can be formed for the through-shaft flexible circuit board.

[0017] In combination with any one of the first aspect to the tenth possible implementation of the first aspect, in the eleventh possible implementation of the first aspect, the through-axis flexible circuit board is a fully flexible circuit board, and a first rigid sheet is provided on the side of the first end of the through-axis flexible circuit board facing away from the first annular sealing assembly. The first rigid sheet is used to increase the structural strength of the first end of the through-axis flexible circuit board, so as to facilitate the connection and cooperation between the first end of the through-axis flexible circuit board and the first adapter circuit board, and also facilitate the reliable bonding between the first end of the through-axis flexible circuit board and the inner ring area of ​​the annular rigid plate through the annular sealant, thereby improving the effective sealing of the through-axis flexible circuit board at the first through hole of the first shell.

[0018] In combination with any one of the first aspect to the tenth possible implementation of the first aspect, in the twelfth possible implementation of the first aspect, the through-axis flexible circuit board is a rigid-flexible circuit board, the through-axis flexible circuit board includes a first flexible circuit board and a first rigid circuit board connected to each other, the first flexible circuit board spans the shaft mechanism, and the first rigid circuit board serves as the first end of the through-axis flexible circuit board and is electrically connected to the first adapter circuit board. The first rigid circuit board of the rigid-flexible circuit board meets the structural strength requirements, and there is no need to set a rigid sheet to improve the structural strength, which can simplify the assembly operation and improve production efficiency.

[0019] In combination with any one of the first aspect to the twelfth possible implementation manner of the first aspect, in a thirteenth possible implementation manner of the first aspect, the first adapter circuit board is a fully flexible circuit board, and a second rigid sheet is provided on a side of the first adapter circuit board facing away from the first annular sealing assembly. The second rigid sheet is used to increase the local structural strength of the first adapter circuit board, so as to facilitate the connection and cooperation between the first end of the through-shaft flexible circuit board and the first adapter circuit board.

[0020] In combination with any one of the first aspect to the twelfth possible implementation of the first aspect, in the fourteenth possible implementation of the first aspect, the first adapter circuit board is a rigid-flexible circuit board, the first adapter circuit board includes a second flexible circuit board and a second rigid circuit board connected to each other, and the second rigid circuit board is electrically connected to the first end of the through-axis flexible circuit board. The second rigid circuit board of the first adapter circuit board meets the structural strength requirements, and there is no need to set a rigid sheet to improve the structural strength, which can simplify the assembly operation and improve production efficiency.

[0021] In combination with any one of the first aspect to the fourteenth possible implementation of the first aspect, in a fifteenth possible implementation of the first aspect, the first adapter circuit board is provided with a second connector for connecting to a predetermined component in the first housing, so as to facilitate the connection between the first adapter circuit board and the predetermined component.

[0022] In combination with any one of the first aspect to the fifteenth possible implementation of the first aspect, in the sixteenth possible implementation of the first aspect, the first shell includes a first middle frame, the first via is provided in the first middle frame, and the first adapter circuit board is provided in the first middle frame. A large number of components will be arranged in the first middle frame, the rear side of the first middle frame is used to set the back shell, and the front side of the first middle frame is used to set the flexible screen. The first middle frame has a first receiving groove connected to the first via, and the first annular sealing assembly is accommodated in the first receiving groove. Arranging the first connector and the first annular sealing assembly in the first receiving groove of the first middle frame can reduce the thickness of the first shell.

[0023] In combination with any one of the first aspect to the sixteenth possible implementation of the first aspect, in the seventeenth possible implementation of the first aspect, the foldable electronic device further includes a second adapter circuit board and a second annular sealing assembly. The second shell has a second via hole, the second adapter circuit board is arranged in the second shell, and the second end of the through-axis flexible circuit board is arranged in the second via hole and is electrically connected to the second adapter circuit board. The second annular sealing assembly is arranged around the connection between the through-axis flexible circuit board and the second adapter circuit board, and is used to seal the gap between the second end of the through-axis flexible circuit board and the second via hole. A complete sealing path is formed around the second end of the through-axis flexible circuit board, and the gap between the second end of the through-axis flexible circuit board and the second via hole of the second shell is effectively sealed.

[0024] In combination with the seventeenth possible implementation of the first aspect, in the eighteenth possible implementation of the first aspect, the same side of the second annular sealing assembly is attached to the second end of the through-shaft flexible circuit board and the second shell. The second annular sealing assembly has a compact structure and is easy to assemble. The second annular sealing assembly forms a complete sealing path for the second end of the through-shaft flexible circuit board, thereby isolating the interior of the second shell from the outside. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A three-dimensional assembly diagram of a foldable electronic device provided in an embodiment of the present application;

[0026] Figure 2 for Figure 1 A three-dimensional cross-sectional view along line AA;

[0027] Figure 3 for Figure 1 An exploded perspective view of a foldable electronic device;

[0028] Figure 4 for Figure 3 An assembly diagram of a foldable electronic device after the first housing, the second housing and the through-shaft flexible circuit board are installed on the hinge mechanism;

[0029] Figure 5 for Figure 4 A schematic diagram of assembling a foldable electronic device after assembling a first annular sealing component and a second annular sealing component;

[0030] Figure 6 for Figure 3 A further exploded perspective view of the foldable electronic device, wherein the first housing, the second housing and the hinge mechanism are not shown;

[0031] Figure 7 A partial cross-sectional view of a foldable electronic device provided in another embodiment of the present application;

[0032] Figure 8 for Figure 1 Partial cross-sectional view along line AA;

[0033] Fig. 9 for Figure 1 Sectional view along line BB. DETAILED DESCRIPTION

[0034] The foldable electronic device provided in the following embodiments of the present application may be a mobile phone, a PDA, a laptop computer or a tablet computer, etc.

[0035] Figure 1 A three-dimensional assembly diagram of a foldable electronic device provided in an embodiment of the present application, Figure 2 for Figure 1 A three-dimensional cross-sectional view along line AA. Figure 1 The foldable electronic device provided in the embodiment of the present application includes a hinge mechanism 10, a first housing 20, a second housing 30 and a flexible screen (not shown). Figure 1 The hinge mechanism 10, the first shell 20, and the second shell 30 shown in the figure are simplified. The first shell 20 and the second shell 30 are respectively connected to the two sides of the hinge mechanism 10 so that the first shell 20 and the second shell 30 can be relatively unfolded or relatively folded. The rotation axes of the first shell 20 and the second shell 30 are arranged in parallel and spaced apart. The flexible screen is arranged on the first shell 20 and the second shell 30. When the foldable electronic device is in the unfolded state, the first shell 20 and the second shell 30 are respectively unfolded on both sides of the hinge mechanism 10, and the flexible screen is in the unfolded state. When the foldable electronic device is folded, under the action of external force, the first shell 20 and the second shell 30 rotate relative to the hinge mechanism 10, so that the angle between the first shell 20 and the second shell 30 is less than 180° and greater than 0°. After being fully folded, the first shell 20 and the second shell 30 are stacked relative to each other, and the flexible screen follows the first shell 20 and the second shell 30 to bend. The flexible screen can be folded inwardly or outwardly. The inward folding method means that the flexible screen is located between the first shell 20 and the second shell 30 after folding, and the outward folding method means that the flexible screen is covered outside the first shell 20 and the second shell 30 after folding. In addition to using one hinge mechanism 10 and two shells to form a two-layer folding structure, the foldable electronic device can also use multiple hinge mechanisms 10 and more than two shells to form a multi-layer folding structure.

[0036] Different devices, such as printed circuit boards, processors, memories, camera components, etc., are arranged in the housing of the foldable electronic device, and these devices can be installed in the first housing 20 or the second housing 30, respectively. Exemplarily, the first printed circuit board, processor, memory and other devices are arranged in the first housing 20, and the second printed circuit board, camera components and other devices are arranged in the second housing 30. In order to realize the electrical connection of the devices in different housings, a through-axis flexible circuit board 40 can be arranged on the hinge mechanism 10, and the through-axis flexible circuit board 40 is placed across the hinge mechanism 10, and the two ends of the through-axis flexible circuit board 40 are respectively connected to the devices of different housings, so that the electrical connection of the devices in different housings can be realized.

[0037] Combination Figure 2 , the through-axis flexible circuit board 40 between the first shell 20 and the second shell 30 needs to be set with a certain redundant length. For example, part of the through-axis flexible circuit board 40 can be set in a winding or bent form to meet the deformation requirements of the through-axis flexible circuit board 40 during the folding or unfolding of the two shells. Part of the through-axis flexible circuit board 40 should be installed on the shell or the hinge mechanism 10 to avoid excessive deformation of the through-axis flexible circuit board 40 during the opening and closing of the two shells. There is a certain gap between the movable first shell 20 (or second shell 30) and the hinge mechanism 10. External dust or water can easily enter through the gap between the shell and the hinge mechanism 10, and then enter the shell through the gap between the through-axis flexible circuit board 40 and the shell through-hole, which will cause the failure of the components in the shell.

[0038] In order to reduce the dust and water ingress into the housing at the position where the through-axis flexible circuit board passes through, a foldable electronic device is proposed, which includes a hinge mechanism, a first housing, a second housing and a through-axis flexible circuit board, the first housing and the second housing are respectively rotatably connected to the two sides of the hinge mechanism, and the middle part of the through-axis flexible circuit board spans the hinge mechanism. For a foldable electronic device, the X direction refers to the left and right direction of the foldable electronic device after unfolding, the Y direction refers to the axial direction of the hinge mechanism, and the X direction and the Y direction are perpendicular to each other. Exemplarily, a printed circuit board is provided in the first housing, and one end of the through-axis flexible circuit board is electrically connected to the printed circuit board. The first housing has a through hole near the hinge mechanism. One end of the through-axis flexible circuit board passes through the through hole of the first housing. A backing adhesive extending along the Y direction is attached near the through hole of the first housing to fix the through-axis flexible circuit board, which can achieve a dustproof and waterproof effect to a certain extent. A fixed steel sheet extending along the Y direction is arranged at the through hole of the first shell, the fixed steel sheet has a first end and a second end distributed along the X direction, the first end is fixed to the first shell, a foam extending along the Y direction is attached to the bottom side of the second end of the fixed steel sheet and the foam is pressed onto the through-axis flexible circuit board, so that the back glue and the foam are located on opposite sides of the through-axis flexible circuit board, so that the printed circuit board is supported on the upper side of the fixed steel sheet.

[0039] The above-mentioned foldable electronic device can realize dust and water resistance in the X direction of the through-axis flexible circuit board by setting adhesive, fixed steel sheet and foam on the through-axis flexible circuit board, but cannot prevent dust and water ingress in the Y direction, because the adhesive and foam both extend along the Y direction, and there is a gap between the two ends of the adhesive and foam in the Y direction and the inner wall of the first shell through hole, and a complete sealing path cannot be achieved, and it can only meet the IPX3 waterproof requirement. The IPX3 waterproof level can prevent the infiltration of sprayed water, rain or prevent water sprayed in a direction with an angle of less than 60 degrees from the vertical from invading the electrical appliance and causing damage.

[0040] Figure 3 for Figure 1 An exploded perspective view of a foldable electronic device; Figure 4 for Figure 3 An assembly diagram of a foldable electronic device after the first housing, the second housing and the through-shaft flexible circuit board are installed on the hinge mechanism; Figure 5 for Figure 4 Schematic diagram of the assembly of a foldable electronic device after assembling a first annular sealing component and a second annular sealing component. Figures 3 to 5 The rotating shaft mechanism 10, the first shell 20, and the second shell 30 shown in the figure are simplified.

[0041] In order to make the housing have a better dustproof and waterproof effect at the position where the through-axis flexible circuit board passes, the embodiment of the present application provides a foldable electronic device, referring to Figures 3 to 5 The foldable electronic device comprises: a hinge mechanism 10, a first shell 20, a second shell 30, a through-shaft flexible circuit board 40, a first adapter circuit board 50 and a first annular sealing assembly 60. The first shell 20 and the second shell 30 are respectively rotatably connected to the two sides of the hinge mechanism 10, so that the first shell 20 and the second shell 30 can be relatively unfolded or relatively folded. Figure 2 , the first housing 20 has a first through hole 211. The first adapter circuit board 50 is disposed in the first housing 20. The middle portion 40a of the through-shaft flexible circuit board 40 spans the shaft mechanism 10, the first end 40b of the through-shaft flexible circuit board 40 is penetrated through the first through hole 211 and electrically connected to the first adapter circuit board 50, and the second end 40c of the through-shaft flexible circuit board 40 extends to the second housing 30. The first annular sealing component 60 is disposed around the connection 71a between the through-shaft flexible circuit board 40 and the first adapter circuit board 50, and is used to seal the gap between the first end 40b of the through-shaft flexible circuit board 40 and the first through hole 211.

[0042] The annular in the first annular sealing component 60 refers to a closed loop area, such as a circular ring, an elliptical ring, a square frame, etc. The first annular sealing component 60 realizes a sealing function, and its shape can be set according to the shape of the hole. Exemplarily, the first through hole 211 of the first housing 20 is roughly rectangular, and the first annular sealing component 60 can be set to a square frame shape that matches the first through hole 211 to achieve effective sealing.

[0043] The foldable electronic device provided in the embodiment of the present application uses a through-axis flexible circuit board 40 and a first adapter circuit board 50 to connect the devices located in the first shell 20 and the second shell 30 respectively. The through-axis flexible circuit board 40 spans the hinge mechanism 10, and the first adapter circuit board 50 is arranged in the first shell 20. The first end 40b of the through-axis flexible circuit board 40 passes through the first through hole 211 of the first shell 20 and is electrically connected to the first adapter circuit board 50. The first annular sealing component 60 is arranged around the connection 71a between the through-axis flexible circuit board 40 and the first adapter circuit board 50. The first annular sealing component 60 forms a complete sealing path for the first end 40b of the through-axis flexible circuit board 40, which can achieve dust and water resistance in the X direction and Y direction at the first through hole 211 of the first shell 20, so that the inside of the first shell 20 is isolated from the outside, and in the case of limited space, the first end 40b of the through-axis flexible circuit board 40 reaches IPX7 and above dust and water resistance. During the opening and closing process of the first shell 20 and the second shell 30, the through-axis flexible circuit board 40 can remain reliably fixed in the first shell 20.

[0044] Among them, the IPX7 waterproof level can prevent water from entering when immersed in water, and can prevent the impact of immersion for 30 minutes in water up to 1 meter deep.

[0045] Exemplarily, the first housing 20 is provided with a first printed circuit board (not shown), on which devices such as a processor and a memory are provided, and the second housing 30 is provided with a second printed circuit board (not shown), on which devices such as a camera assembly are provided. The through-axis flexible circuit board 40 and the first adapter circuit board 50 are combined to connect devices located in different housings, the first end 40b of the through-axis flexible circuit board 40 is connected to one end of the first adapter circuit board 50, the other end of the first adapter circuit board 50 is connected to the first printed circuit board, and the second end 40c of the through-axis flexible circuit board 40 is connected to the second printed circuit board, so that the electrical connection of the devices in the two housings can be achieved. Alternatively, the first adapter circuit board 50 is used as the first printed circuit board; or, part of the circuit of the first end 40b of the through-axis flexible circuit board 40 is directly connected to the device of the first housing 20. These methods can achieve electrical connection of devices located in the first housing 20 and the second housing 30, respectively.

[0046] When setting up the shaft mechanism, refer to Figure 2 , Figure 3 The rotating shaft mechanism 10 includes a main shaft 11, a first baffle 12 and a second baffle 13 respectively connected to both sides of the main shaft 11. The main shaft 11 includes a main outer shaft 111 and a main inner shaft 112 connected to each other, and the middle part 40a of the through-shaft flexible circuit board 40 is arranged between the main outer shaft 111 and the main inner shaft 112, or the middle part 40a of the through-shaft flexible circuit board 40 is arranged across the surface of the main inner shaft 112. A first accommodating space 121 is formed between the first baffle 12 and the first shell 20, which is used to accommodate a part of the through-shaft flexible circuit board 40 located on one side of the main shaft 11. A second accommodating space 131 is formed between the second baffle 13 and the second shell 30, which is used to accommodate a part of the through-shaft flexible circuit board 40 located on the other side of the main shaft 11. When the flexible screen adopts inward folding, the two ends of the flexible screen are fixed to the first shell 20 and the second shell 30 respectively, and the middle part of the flexible screen is arranged corresponding to the first baffle 12, the main inner shaft 112 and the second baffle 13. When the first shell 20 and the second shell 30 are unfolded, the main inner shaft 112, the first baffle plate 12 and the second baffle plate 13 jointly support the middle part of the flexible screen.

[0047] In some embodiments, see Figures 3 to 5 In order to facilitate the assembly of the through-shaft flexible circuit board 40, the first adapter circuit board 50 and the first annular sealing assembly 60, the first end 40b of the through-shaft flexible circuit board 40 is electrically connected to the first adapter circuit board 50 through the first connector 71, and the first annular sealing assembly 60 is arranged around the first connector 71. By arranging the first connector 71 between the through-shaft flexible circuit board 40 and the first adapter circuit board 50, a certain distance is formed between the through-shaft flexible circuit board 40 and the first adapter circuit board 50 in the thickness direction to place the first annular sealing assembly 60, and a complete sealed waterproof path is formed at the first through hole 211 of the first housing 20 for the first end 40b of the through-shaft flexible circuit board 40, and the electrical connection between the through-shaft flexible circuit board 40 and the first adapter circuit board 50 is achieved.

[0048] Among them, see Figure 3 The first connector 71 includes a socket 711 and a plug 712 that can be plugged into each other. After the socket 711 and the plug 712 are connected, the two can be fixed and signal transmission can be achieved. Exemplarily, the first end 40b of the through-axis flexible circuit board 40 is provided with a socket 711, and the first adapter circuit board 50 is provided with a plug 712. During assembly, the first end 40b of the through-axis flexible circuit board 40 is provided with a socket 711, and the first adapter circuit board 50 is provided with a plug 712. Figure 4 , Figure 5, firstly, the first annular sealing component 60 is attached to the first end 40b of the through-axis flexible circuit board 40 and the surface of the first housing 20 to seal the gap between the first through hole 211 of the first housing 20 and the through-axis flexible circuit board 40; then, the plug 712 of the first adapter circuit board 50 is plugged into the socket 711 of the through-axis flexible circuit board 40 to realize the electrical connection between the through-axis flexible circuit board 40 and the first adapter circuit board 50. In other embodiments, the installation positions of the socket and the plug can be interchanged without affecting the detachable connection between the through-axis flexible circuit board and the first adapter circuit board.

[0049] Figure 6 for Figure 3 In some embodiments, refer to Figure 2 , Figure 6 The same side of the first annular sealing component 60 is attached to the first end 40b of the through-axis flexible circuit board 40 and the first shell 20. The first annular sealing component 60 has a compact structure and is easy to assemble. The first annular sealing component 60 forms a complete sealing path for the first end 40b of the through-axis flexible circuit board 40, thereby isolating the inside of the first shell 20 from the outside.

[0050] When setting the first annular sealing assembly 60, refer to Figure 2 , Figure 6 The first annular sealing assembly 60 includes an annular sealant 61 and an annular rigid plate 62, and the annular rigid plate 62 is attached to the first end 40b of the through-shaft flexible circuit board 40 and the first shell 20 through the annular sealant 61. The annular shapes in the annular sealant 61 and the annular rigid plate 62 can be understood with reference to the annular shape in the first annular sealing assembly 60. The annular rigid plate 62 is fixed to the first end 40b of the through-shaft flexible circuit board 40 and the first shell 20 by using the annular sealant 61. Although external dust or water can enter from the gap between the first shell 20 and the rotating shaft mechanism 10, the annular sealant 61 and the annular rigid plate 62 form a complete sealing path for the first end 40b of the through-shaft flexible circuit board 40, and external dust or water cannot continue to enter the interior of the first shell 20 through the first through hole 211 of the first shell 20, thereby effectively protecting the devices in the first shell 20.

[0051] During the folding or unfolding of the first shell 20 and the second shell 30, the flexible through-axis flexible circuit board 40 will deform to form a pushing effect on the first annular sealing assembly 60, and it is possible to push the annular sealant 61 away from the first shell 20, which will cause the failure of dustproof and waterproof. The use of an annular rigid plate 62 with a certain rigidity can reduce the pushing effect on the first annular sealing assembly 60 caused by excessive deformation of the through-axis flexible circuit board 40 to a certain extent, and improve the sealing effect of the first annular sealing assembly 60. The annular rigid plate 62 can be made of steel sheet or other materials with a certain rigidity.

[0052] There are different ways to implement the ring seal. The first way to implement the ring seal is: Figure 2 The annular sealant 61 is an integral layered structure, such as using adhesive backing, and this assembly method is easy to operate. Exemplarily, during assembly, the adhesive backing is first fixed to the annular rigid plate 62, and then the side of the annular rigid plate 62 provided with adhesive backing is attached to the first end 40b of the through-axis flexible circuit board 40 and the first housing 20, so that the gap between the first through hole 211 of the first housing 20 and the through-axis flexible circuit board 40 is sealed.

[0053] The second implementation method of the annular sealant is: the annular sealant includes a first annular sealant and a second annular sealant, the second annular sealant is located radially outside the first annular sealant, the first end of the through-axis flexible circuit board and the inner ring area of ​​the annular rigid plate are bonded by the first annular sealant, and the first shell and the outer ring area of ​​the annular rigid plate are bonded by the second annular sealant. The first annular sealant and the second annular sealant can use the same or different colloids. This method can reduce the amount of colloid material and the dimensional tolerance is easy to control. Exemplarily, when different colloids are used, the first annular sealant is a point glue, and the second annular sealant is a back glue. The point glue and the back glue are respectively set in the inner ring area and the outer ring area of ​​the annular rigid plate, and then the annular rigid plate is attached to the first end of the through-axis flexible circuit board and the surface of the first shell through different colloids. In addition, the first annular sealant and the second annular sealant can also both use back glue, and the two annular sealants can be spaced a certain distance apart to reduce the amount of colloid material.

[0054] When connecting the through-axis flexible circuit board and the first adapter circuit board, different implementation methods can be used according to the orientation of the end of the through-axis flexible circuit board. The first implementation method of connecting the through-axis flexible circuit board and the first adapter circuit board is: Figure 7 The first end 40b of the through-axis flexible circuit board 40 is set as a plane extension portion 41, and the plane extension portion 41 is electrically connected to the first adapter circuit board 50. After the first end 40b of the through-axis flexible circuit board 40 penetrates the first through hole 211 of the first housing 20, it is connected to the first adapter circuit board 50 in the form of the plane extension portion 41, so that the through-axis flexible circuit board 40 and the first adapter circuit board 50 can be electrically connected.

[0055] The second method of connecting the through-axis flexible circuit board and the first transfer circuit board is: Figure 2 , Figure 8 , Fig. 9, the first end 40b of the through-axis flexible circuit board 40 is set as a bending portion 42, and the bending portion 42 is electrically connected to the first adapter circuit board 50. The first end 40b of the through-axis flexible circuit board 40 passes through the first through hole 211 of the first shell 20 and then bends toward the hinge mechanism 10. When the first through hole 211 is set at a position close to the hinge mechanism 10 in the first shell 20, the first end 40b of the through-axis flexible circuit board 40 and the first adapter circuit board 50 are set closer to the hinge mechanism 10, so that the first shell 20 can form a larger space 22 in the X direction to accommodate more devices on the first shell 20. This method can achieve electrical connection between the through-axis flexible circuit board 40 and the first adapter circuit board 50.

[0056] For example, the bending portion 42 can be bent and extended toward the rotating shaft mechanism 10 (i.e., the X direction), and a through-axis flexible circuit board 40 in a strip shape is selected, and one end of the through-axis flexible circuit board 40 is bent 180° to form the bending portion 42. The through-axis flexible circuit board 40 with the bending portion 42 is easy to form. In addition, the bending portion can also be bent and extended toward the Y direction or other directions, and a through-axis flexible circuit board with an L-shape or other specific shape is used and the bending portion is formed by bending.

[0057] In some embodiments, see Figure 2 , Figure 8 In order to reliably support the bending portion 42 on the first housing 20, the end 42a of the bending portion 42 is supported on the first housing 20, and the other end of the bending portion 42 is supported on the first housing 20 through the supporting assembly 43. The end 42a of the bending portion 42 is the end of the bending portion 42 in the extension direction. Figure 2 In the illustrated embodiment, the end 42a of the bent portion 42 is the portion close to the rotating shaft mechanism 10. After the end 42a of the bent portion 42 is supported on the first housing 20, the other end of the bent portion 42 is supported on the first housing 20 by means of the supporting assembly 43, so that two supporting positions are provided for the bent portion 42 on one plane, so that reliable support of the bent portion 42 is achieved, and the situation that the through-shaft flexible circuit board 40 is deformed too much and separated from the first annular sealing assembly 60 is reduced when the first housing 20 and the second housing 30 are folded or unfolded.

[0058] When setting the bend, refer to Figure 8The bending portion 42 includes a first plane portion 421, a transition connection portion 422, and a second plane portion 423 connected in sequence. The first plane portion 421 and the second plane portion 423 are arranged at intervals. The first plane portion 421 extends into the first through hole 211. The end of the second plane portion 423 away from the transition connection portion 422 serves as the end 42a of the bending portion 42 and is supported on the first shell 20. The second plane portion 423 is electrically connected to the first adapter circuit board 50. The length of the second plane portion 423 in the X direction is greater than the length of the first plane portion 421. The first plane portion 421 and the second plane portion 423 can be parallel to each other, and the first end 40b of the through-axis flexible circuit board 40 and the first adapter circuit board 50 are also arranged parallel to each other. The second plane portion 423 is arranged parallel to the plane where the first shell 20 is located, so as to facilitate the arrangement of the first adapter circuit board 50, the first connector 71 and the first annular sealing assembly 60 in a limited space.

[0059] There are different ways to connect the bending part and the supporting component. The first way to connect the bending part and the supporting component is: Figure 6 , Figure 8 The supporting assembly 43 includes a first gasket 431 and a second gasket 432. The first gasket 431 and the second gasket 432 are respectively located on both sides of the first plane portion 421. The two sides of the first gasket 431 are respectively connected to the second plane portion 423 and the first plane portion 421. The two sides of the second gasket 432 are respectively connected to the first plane portion 421 and the first shell 20. The first plane portion 421 is supported on the first shell 20 by the second gasket 432, and the second plane portion 423 is supported on the first plane portion 421 by the first gasket 431, so that the part of the bending portion 42 away from its end 42a can be supported. Among them, the two sides of the gasket can be connected to the adjacent structure by bonding, for example, the two sides of the first gasket 431 are respectively connected to the first plane portion 421 and the second plane portion 423 by adhesive, and the two sides of the second gasket 432 are respectively connected to the first shell 20 and the first plane portion 421 by adhesive.

[0060] Exemplarily, the first plane portion 421 and the second plane portion 423 are arranged parallel to each other. Figure 3 The first through hole 211 of the first housing 20 is in the shape of a long strip. Figure 6 The first gasket 431 and the second gasket 432 are arranged in a long strip shape. The first gasket 431 and the second gasket 432 are arranged on both sides of the first plane portion 421 along the width direction of the through-axis flexible circuit board 40, respectively, and one end of the bending portion 42 can be supported by using fewer gaskets. In addition, the first gasket 431 and the second gasket 432 can also be arranged in other shapes.

[0061] The material of the gasket can be set as needed. Exemplarily, the first gasket 431 is foam, and the second gasket 432 is a rigid sheet. The rigid second gasket 432 can support the first plane portion 421 to a certain height, and the elastic first gasket 431 can support one end of the second plane portion 423, so that the second plane portion 423 is supported on the first shell 20 in a manner parallel to the first shell 20. The elastic first gasket 431 is connected between the first plane portion 421 and the second plane portion 423 to form protection for the through-axis flexible circuit board 40 and reduce the wear caused by the rigid gasket.

[0062] The second way to connect the bending portion and the support assembly is: the support assembly includes a first gasket, the two sides of the first gasket are respectively connected to the second plane portion and the first plane portion, and the side of the first plane portion facing away from the first gasket is connected to the first shell. In this way, the part of the bending portion away from the rotating shaft mechanism can be supported and the flexible circuit board through the shaft can be protected. The first plane portion and the first shell can be connected by adhesive.

[0063] There are different ways to implement a through-axis flexible circuit board. The first way to implement a through-axis flexible circuit board is: Figure 6 , Figure 8 The through-axis flexible circuit board 40 is a fully flexible circuit board, and a first rigid sheet 44 is provided on the side of the first end 40b of the through-axis flexible circuit board 40 facing away from the first annular sealing assembly 60. The first rigid sheet 44 is used to increase the structural strength of the first end 40b of the through-axis flexible circuit board 40, facilitate the connection and cooperation between the first end 40b of the through-axis flexible circuit board 40 and the first adapter circuit board 50, and facilitate the reliable bonding between the first end 40b of the through-axis flexible circuit board 40 and the inner ring area of ​​the annular rigid plate 62 through the annular sealant 61, thereby improving the effective sealing of the through-axis flexible circuit board 40 at the first through hole 211 of the first shell 20, and reducing the situation in which the through-axis flexible circuit board 40 is too deformed during the folding or unfolding of the first shell 20 and the second shell 30, causing the first end 40b of the through-axis flexible circuit board 40 to separate from the annular rigid plate 62. The first rigid sheet 44 can be installed on the first end 40b of the through-axis flexible circuit board 40 by using adhesive or other methods.

[0064] For example, see Figure 8When the first end 40b of the through-axis flexible circuit board 40 is a bending portion 42, the bending portion 42 includes a first plane portion 421, a transition connection portion 422, and a second plane portion 423 connected in sequence. The bending portion 42 having the first plane portion 421, the transition connection portion 422, and the second plane portion 423 can be formed by bending the through-axis flexible circuit board 40 by 180°, and the first rigid sheet 44 is arranged on the side of the second plane portion 423 facing the first plane portion 421. When the support assembly 43 is arranged, the first gasket 431 in the support assembly 43 is sandwiched between the first rigid sheet 44 and the first plane portion 421, so as to support the first end 40b of the through-axis flexible circuit board 40 on the first housing 20.

[0065] For example, see Figure 7 When the first end 40b of the through-axis flexible circuit board 40 is the planar extension portion 41, the first rigid sheet 44 is disposed on the side of the first end 40b of the through-axis flexible circuit board 40 facing away from the first adapter circuit board 50, and the first end 40b of the through-axis flexible circuit board 40 is inserted into the first through hole 211 of the first housing 20. Both sides of the first rigid sheet 44 can be fixed to the first housing 20 and the first adapter circuit board 50 respectively by adhesive.

[0066] The second implementation method of the through-axis flexible circuit board is: the through-axis flexible circuit board is a rigid-flexible circuit board, and the through-axis flexible circuit board includes a first flexible circuit board and a first rigid circuit board connected to each other, the first flexible circuit board spans the rotating shaft mechanism, and the first rigid circuit board serves as the first end of the through-axis flexible circuit board and is electrically connected to the first adapter circuit board. The first rigid circuit board of the rigid-flexible circuit board meets the structural strength requirements, and there is no need to set a rigid sheet to improve the structural strength, which can simplify the assembly operation and improve production efficiency. When setting the first connector, the first connector is set on the first rigid circuit board for electrical connection with the first adapter circuit board.

[0067] Exemplarily, when the first end of the through-axis flexible circuit board is a bending portion, the bending portion includes a first plane portion, a transition connection portion, and a second plane portion connected in sequence, the first plane portion and the transition connection portion are set as a part of the first flexible circuit board, the second plane portion is set as the first rigid circuit board, and the first rigid circuit board is bent to a predetermined position to be electrically connected to the first adapter circuit board. When setting the support assembly, the first gasket in the support assembly is sandwiched between the first rigid circuit board and the first plane portion to support the first end of the through-axis flexible circuit board on the first housing.

[0068] Exemplarily, when the first end of the through-axis flexible circuit board is a planar extension, the rigid first rigid circuit board is directly inserted into the first through hole of the first housing, and then electrically connected to the first adapter circuit board. The first rigid circuit board is supported on the first housing.

[0069] There are different implementations for setting up the first transfer circuit board. The first implementation of the first transfer circuit board is: Figure 6 , Figure 8 The first adapter circuit board 50 is a fully flexible circuit board, and a second rigid sheet 51 is provided on the side of the first adapter circuit board 50 facing away from the first annular sealing assembly 60. The second rigid sheet 51 is used to increase the local structural strength of the first adapter circuit board 50, so as to facilitate the connection and cooperation between the first end 40b of the through-shaft flexible circuit board 40 and the first adapter circuit board 50.

[0070] The second implementation of the first adapter circuit board is that the first adapter circuit board is a rigid-flexible circuit board, the first adapter circuit board includes a second flexible circuit board and a second rigid circuit board connected to each other, and the second rigid circuit board is electrically connected to the first end of the through-axis flexible circuit board. The second rigid circuit board of the first adapter circuit board meets the structural strength requirements, and there is no need to set a rigid sheet to improve the structural strength, which can simplify the assembly operation and improve production efficiency.

[0071] In some embodiments, in order to facilitate the connection between the first adapter circuit board 50 and the predetermined device, refer to Figure 1 , Figure 3 , the first adapter circuit board 50 is provided with a second connector 72, which is used to connect to a predetermined device in the first shell 20. Among them, the structure and connection relationship of the second connector 72 can refer to the situation of the first connector 71. The predetermined device can be a printed circuit board or other devices. Exemplarily, a first printed circuit board (not shown) is provided in the first shell 20, and the first adapter circuit board 50 and the first printed circuit board are connected through the second connector 72. The first connector 71 is provided at the first end 50a of the first adapter circuit board 50, and the second connector 72 is provided at the second end 50b of the first adapter circuit board 50. The orientation of the first end 50a and the second end 50b of the first adapter circuit board 50 can be set according to needs, for example, in Figure 3 In the embodiment shown, the first end 50a and the second end 50b of the first adapter circuit board 50 are on the same plane and the directions of the two are perpendicular to each other; for example, in Figure 7 In the illustrated embodiment, the first adapter circuit board 50 is bent 180° so that the first end 50a and the second end 50b face the same direction.

[0072] In some embodiments, in order to achieve effective sealing at the second housing through hole, refer to Figure 2The foldable electronic device further includes a second adapter circuit board 80 and a second annular sealing assembly 90. The second housing 30 has a second through hole 311, the second adapter circuit board 80 is arranged in the second housing 30, and the second end 40c of the through-axis flexible circuit board 40 is arranged in the second through hole 311 and is electrically connected to the second adapter circuit board 80. The second annular sealing assembly 90 is arranged around the connection 73a between the through-axis flexible circuit board 40 and the second adapter circuit board 80, and is used to seal the gap between the second end 40c of the through-axis flexible circuit board 40 and the second through hole 311. A complete sealing path is formed around the second end 40c of the through-axis flexible circuit board 40, and the gap between the second end 40c of the through-axis flexible circuit board 40 and the second through hole 311 of the second housing 30 is effectively sealed.

[0073] The assembly relationship of the second end 40c of the through-axis flexible circuit board 40, the second housing 30, the second adapter circuit board 80, and the second annular sealing assembly 90 can refer to the connection of the relevant structure of the second end 40b of the through-axis flexible circuit board 40. The through-axis flexible circuit board 40 and the second adapter circuit board 80 can be electrically connected through the third connector 73. In addition, the second end 40c of the through-axis flexible circuit board 40 can be in the form of a planar extension or a bent portion with reference to the first end 40b.

[0074] When the second annular sealing assembly 90 is set, the same side of the second annular sealing assembly 90 is attached to the second end 40c of the through-axis flexible circuit board 40 and the second shell 30. The second annular sealing assembly 90 has a compact structure and is easy to assemble. The second annular sealing assembly 90 forms a complete sealing path for the second end 40c of the through-axis flexible circuit board 40, thereby isolating the inside of the second shell 30 from the outside.

[0075] When setting up the first housing, refer to Figure 2 , Figure 3 The first shell 20 includes a first middle frame 21, a first via 211 is provided in the first middle frame 21, and a first adapter circuit board 50 is provided in the first middle frame 21. A large number of components will be arranged in the first middle frame 21. The rear side 21a of the first middle frame 21 is used to set the back shell (not shown), and the front side 21b of the first middle frame 21 is used to set the flexible screen. The first middle frame 21 has a first receiving groove 212 connected to the first via 211, and the first annular sealing assembly 60 is accommodated in the first receiving groove 212. The first adapter circuit board 50 and the through-axis flexible circuit board 40 are connected through the first connector 71, and the first connector 71 and the first annular sealing assembly 60 are arranged in the first receiving groove 212 of the first middle frame 21, which can reduce the thickness of the first shell 20 and make the structure occupy less space.

[0076] When setting up the second housing, refer to Figure 2 , Figure 3The second housing 30 includes a second middle frame 31, a second through hole 311 is provided in the second middle frame 31, and a second adapter circuit board 80 is provided in the second middle frame 31. The second middle frame 31 has a second receiving groove 312 communicating with the second through hole 311, and the second annular sealing assembly 90 is accommodated in the second receiving groove 312, so that the thickness of the second housing 30 can be reduced.

[0077] Finally, it should be noted that the above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A foldable electronic device, characterized in that: include: A rotating shaft mechanism, a first housing, a second housing, a through-shaft flexible circuit board, a first adapter circuit board and a first annular sealing assembly; The first shell and the second shell are rotatably connected to two sides of the rotating shaft mechanism respectively, so that the first shell and the second shell can be relatively unfolded or relatively folded; the first shell has a first through hole; The first adapter circuit board is arranged in the first housing; The middle part of the through-axis flexible circuit board spans the rotating shaft mechanism, the first end of the through-axis flexible circuit board is passed through the first via hole and is electrically connected to the first adapter circuit board, and the second end of the through-axis flexible circuit board extends to the second housing; The first annular sealing component is disposed around the connection between the through-axis flexible circuit board and the first adapter circuit board, and is used to seal the gap between the first end of the through-axis flexible circuit board and the first via hole.

2. The foldable electronic device according to claim 1, characterized in that: The first end of the through-axis flexible circuit board is electrically connected to the first adapter circuit board through a first connector, and the first annular sealing component is arranged around the first connector.

3. The foldable electronic device according to claim 1, characterized in that: The same side of the first annular sealing component is attached to the first end of the through-shaft flexible circuit board and the first shell.

4. The foldable electronic device according to claim 3, characterized in that: The first annular sealing component includes an annular sealant and an annular rigid plate, and the annular rigid plate is attached to the first end of the through-shaft flexible circuit board and the first shell through the annular sealant.

5. The foldable electronic device according to claim 4, characterized in that: The annular sealant is an integrated layered structure; Or, the annular sealant includes a first annular sealant and a second annular sealant, the second annular sealant is located radially outside the first annular sealant, the first end of the through-axis flexible circuit board and the inner ring area of ​​the annular rigid plate are bonded by the first annular sealant, and the first shell and the outer ring area of ​​the annular rigid plate are bonded by the second annular sealant.

6. The foldable electronic device according to any one of claims 1 to 5, characterized in that: The first end of the through-axis flexible circuit board is configured as a bending portion, and the bending portion is electrically connected to the first adapter circuit board; Alternatively, the first end of the through-axis flexible circuit board is configured as a planar extension portion, and the planar extension portion is electrically connected to the first adapter circuit board.

7. The foldable electronic device according to claim 6, characterized in that: When the first end of the through-axis flexible circuit board is the bending portion, the end of the bending portion is supported on the first shell, and the other end of the bending portion is supported on the first shell through a supporting assembly.

8. The foldable electronic device according to claim 7, characterized in that: The bending portion includes a first plane portion, a transition connection portion, and a second plane portion connected in sequence, the first plane portion and the second plane portion are arranged at intervals, the first plane portion extends into the first via hole, an end of the second plane portion away from the transition connection portion serves as the end of the bending portion and is supported on the first housing, and the second plane portion is electrically connected to the first adapter circuit board; The support assembly includes a first gasket and a second gasket, the first gasket and the second gasket are respectively located on both sides of the first plane portion, the two sides of the first gasket are respectively connected to the second plane portion and the first plane portion, and the two sides of the second gasket are respectively connected to the first plane portion and the first shell; Alternatively, the support assembly includes a first gasket, two sides of the first gasket are respectively connected to the second plane portion and the first plane portion, and a side of the first plane portion facing away from the first gasket is connected to the first shell.

9. The foldable electronic device according to any one of claims 1 to 5, characterized in that: The through-axis flexible circuit board is a fully flexible circuit board, and a first rigid sheet is provided on a side of the first end of the through-axis flexible circuit board facing away from the first annular sealing assembly; Alternatively, the through-axis flexible circuit board is a rigid-flexible circuit board, and the through-axis flexible circuit board includes a first flexible circuit board and a first rigid circuit board connected to each other, the first flexible circuit board spans the rotating shaft mechanism, and the first rigid circuit board serves as the first end of the through-axis flexible circuit board and is electrically connected to the first adapter circuit board.

10. The foldable electronic device according to any one of claims 1 to 5, characterized in that: The first adapter circuit board is a fully flexible circuit board, and a second rigid sheet is provided on a side of the first adapter circuit board facing away from the first annular sealing assembly; Alternatively, the first adapter circuit board is a rigid-flexible circuit board, the first adapter circuit board includes a second flexible circuit board and a second rigid circuit board connected to each other, and the second rigid circuit board is electrically connected to the first end of the through-axis flexible circuit board.

11. The foldable electronic device according to any one of claims 1 to 5, characterized in that: The first adapter circuit board is provided with a second connector for connecting to a predetermined component in the first housing.

12. The foldable electronic device according to any one of claims 1 to 5, characterized in that: The first shell includes a first middle frame, the first via hole is arranged in the first middle frame, and the first adapter circuit board is arranged in the first middle frame; the first middle frame has a first receiving groove connected to the first via hole, and the first annular sealing assembly is accommodated in the first receiving groove.

13. The foldable electronic device according to any one of claims 1 to 5, characterized in that: The foldable electronic device also includes a second adapter circuit board and a second annular sealing assembly; The second housing has a second through hole, the second adapter circuit board is arranged in the second housing, and the second end of the through-axis flexible circuit board is arranged in the second through hole and is electrically connected to the second adapter circuit board; The second annular sealing component is disposed around the connection between the through-axis flexible circuit board and the second adapter circuit board, and is used to seal the gap between the second end of the through-axis flexible circuit board and the second via hole.

14. The foldable electronic device according to claim 13, characterized in that: The same side of the second annular sealing component is attached to the second end of the through-shaft flexible circuit board and the second shell.

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