Flexible circuit board assembly, rotating shaft assembly and foldable electronic equipment

Abstract

The embodiment of the invention provides a flexible circuit board assembly, a rotating shaft assembly and foldable electronic equipment, and belongs to the technical field of electronic equipment, a flexible circuit board is arranged on a rotating shaft in a penetrating mode through a through hole in the rotating shaft, a first adsorption part is connected with a second adsorption part in the through hole in an adsorption mode, and a clamping part is matched with the rotating shaft in a clamping mode. High limiting fastness of the flexible circuit board is achieved, the problem that the flexible circuit board falls off in scenes such as falling is solved, and the risk of breakage of the rotating shaft is reduced. The first adsorption part and the second adsorption part are located on the same side of the flexible circuit board, so that the thickness space occupied by the adsorption parts in the rotating shaft is reduced, the strength of the rotating shaft is improved, and the breakage risk of the rotating shaft in scenes such as falling is reduced under the condition of high adsorption effect. Moreover, the clamping part is detachably connected with the rotating shaft in a clamping manner, and the first adsorption part and the second adsorption part can be separated under the action of external force, so that the flexible circuit can be conveniently detached from the rotating shaft, and the detachment in the scenes of repair and the like is facilitated.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electronic devices, in particular to a flexible circuit board assembly, a rotating shaft assembly and a foldable electronic device. BACKGROUND

[0002] With the gradual maturity of flexible screen technology, the display mode of electronic devices has changed greatly, one of which is the emergence of foldable mobile phones, computers and other electronic devices. Foldable electronic devices can flexibly change modes according to different use scenarios, and also have high screen ratio and clarity. For example, a foldable mobile phone can have the size of a traditional mobile phone when folded, making it easy to carry, and can have the display size of a tablet when unfolded. These features make foldable devices one of the most popular products among people.

[0003] A foldable electronic device includes at least two middle frames, a rotating shaft and a flexible circuit board. The two middle frames are located on the two sides of the rotating shaft, and the two middle frames are rotationally connected through the rotating shaft, so that the two middle frames can rotate relative to each other, thereby enabling the electronic device to have a folded state, an intermediate state and an unfolded state. The flexible circuit board, which can be bent and can realize circuit connection, is generally arranged on the rotating shaft and connected with electronic elements in the two middle frames to realize conduction. The flexible circuit board is usually fixed and limited by magnetic attraction with the rotating shaft, for example, a magnetic attraction piece is fixed in the rotating shaft hole, and a magnetic attraction piece is fixed on the flexible circuit board. The two magnetic attraction pieces are located on opposite sides of the flexible circuit board, and the flexible circuit board is fixed with the rotating shaft through the attraction of the two magnetic attraction pieces.

[0004] The above-mentioned flexible circuit board and rotating shaft fixing scheme greatly affects the strength of the rotating shaft, and increases the risk of rotating shaft fracture in scenarios such as falling. SUMMARY

[0005] The embodiments of the present application provide a flexible circuit board assembly, a rotating shaft assembly and a foldable electronic device, which improve the strength of the rotating shaft under the condition of high fixing firmness of the flexible circuit board and the rotating shaft.

[0006] A first aspect of the embodiments of the present application provides a flexible circuit board assembly for cooperating with a rotating shaft of a foldable electronic device. The flexible circuit board assembly includes a flexible circuit board, a first suction member and a first clamping member. The flexible circuit board is arranged on the rotating shaft through a through hole of the rotating shaft, so that the two ends of the flexible circuit board can be located on the two sides of the rotating shaft, and the flexible circuit board can realize electrical connection between electronic elements in the two middle frames of the foldable electronic device. Part of the flexible circuit board is located in the through hole of the rotating shaft. The arrangement direction of the flexible circuit board intersects with the thickness direction of the rotating shaft and the length direction of the rotating shaft.

[0007] The first suction member is arranged on the flexible circuit board, and an end of the first suction member away from the flexible circuit board is used for suction connection with the second suction member in the through hole, that is, when the flexible circuit board is arranged on the rotating shaft through the through hole, the first suction member can be arranged in the through hole of the rotating shaft and suction connected with the second suction member in the rotating shaft, so that the flexible circuit board is fixed and limited in position, and the movement of the flexible circuit board in the thickness direction relative to the rotating shaft can be limited, the displacement of the flexible circuit board in the thickness direction in daily use or in a falling or the like scene is limited, and the flexible circuit board is fixed and arranged with the rotating shaft.

[0008] The end of the first suction member away from the flexible circuit board is suction connected with the second suction member, that is, the first suction member and the second suction member are located on the same side of the flexible circuit board, so that a high suction force is ensured between the first suction member and the second suction member, the thickness of the first suction member and the second suction member can be reduced under the condition of meeting the fixing and limiting strength, that is, the thickness space occupied in the rotating shaft is reduced, the strength of the rotating shaft is improved, the risk of fracture of the rotating shaft in a falling, impact or the like scene is reduced, and the service life and use experience are improved.

[0009] The clamping piece is arranged on the flexible circuit board, and the clamping piece is used for being inserted into the through hole in the arrangement direction of the flexible circuit board and being clamped and matched with the rotating shaft. That is, when the flexible circuit board is arranged on the rotating shaft through the through hole, the clamping piece can be inserted into the through hole along the arrangement direction of the flexible circuit board and be clamped and matched with the rotating shaft, so that the flexible circuit board is fixed and limited in position. For example, the movement of the flexible circuit board relative to the rotating shaft in the length direction and the width direction (the arrangement direction) can be limited, the displacement of the flexible circuit board in daily use or in a falling or the like scene is limited, the fixing and limiting strength of the flexible circuit board and the rotating shaft is further improved, the assembly stability and reliability of the flexible circuit board are improved. The movement or falling of the flexible circuit board in a falling, impact or the like scene is reduced or avoided, the risk of fracture of the rotating shaft caused by impact between the flexible circuit board, the first suction member and the rotating shaft is reduced, the service life and use experience are further improved.

[0010] The clamping piece can also be detached from the rotating shaft, and the first suction member and the second suction member can also be separated under the action of a certain external force. For example, the other end of the flexible circuit board is pulled in the opposite direction (for example, the opposite direction of the arrangement direction), so that the clamping piece is separated from the rotating shaft, the first suction member is separated from the second suction member, and the flexible circuit board can be detached from the rotating shaft, so that the convenience of disassembly of the flexible circuit board is improved, and the disassembly in a repair or the like scene is facilitated.

[0011] In a possible implementation, the flexible circuit board comprises a first surface and a second surface opposite in the thickness direction, and at least part of the clamping member and the first suction member are respectively located on the first surface and the second surface, and the at least part of the clamping member, the part of the flexible circuit board and the first suction member are sequentially stacked in the thickness direction.

[0012] The end of the first suction member away from the second surface is used to abut against the second suction member, that is, when the flexible circuit board is fixedly assembled with the shaft through the clamping member and the first suction member, the end of the first suction member away from the flexible circuit board abuts against and is adsorptively connected with the second suction member, and the end of the at least part of the clamping member away from the first surface is used to abut against the inner wall of the through hole opposite to the second suction member in the thickness direction. That is, the second suction member, the first suction member, the part of the flexible circuit board and the at least part of the clamping member are sequentially stacked in the thickness direction, and the second suction member can abut against and be fixed on one of the two inner walls opposite in the thickness direction of the through hole, and the at least part of the clamping member abuts against the other one of the two inner walls, that is, the laminated structure composed of the second suction member, the first suction member, the flexible circuit board and the at least part of the clamping member can jointly fill the through hole in the thickness direction, and there can be no gap between the laminated structure and the shaft (or the two inner walls in the thickness direction of the through hole). In the scenarios of falling, impact and the like, the problems such as impact or movement of the flexible circuit board assembly with the shaft are less likely to occur, the falling strength of the shaft is further improved, and the risk of fracture of the shaft is significantly reduced.

[0013] In a possible implementation, the clamping member comprises a first body part and at least two limiting parts.

[0014] The at least two limiting parts are respectively located on two sides of the first body part opposite in the penetrating direction, the limiting part is protrudingly arranged on the side of the first body part facing the first suction member, the limiting part and the first body part enclose an accommodation space, and the first suction member is located in the accommodation space. The accommodation space can play a positioning role for assembly of the first suction member and the clamping member, facilitating accurate positioning of the first suction member and the clamping member, and facilitating implementation of adsorptive connection of the first suction member and the second suction member when the clamping member is clamped with the shaft.

[0015] The limiting parts located on the two sides of the first body part opposite in the penetrating direction can also achieve limiting and fixing of the first suction member, limit displacement of the first suction member relative to the clamping member in the penetrating direction, improve consistency of movement of the clamping member and the first suction member in the penetrating direction, and prevent the flexible circuit board from being pulled due to too large slippage of the first adhesive layer between the flexible circuit board and the clamping member, the second adhesive layer between the flexible circuit board and the first suction member and the like during pulling of the flexible circuit board in the process of assembling or disassembling the flexible circuit board assembly, thereby causing damage to the flexible circuit board.

[0016] In a possible implementation, the at least two limiting portions are respectively arranged on the opposite ends of the first main body portion along the length direction, so as to ensure consistent positioning and limiting effects of the first suction accessory along the length direction, enhance the positioning and limiting strength of the first suction accessory, and improve the positioning and limiting effects of the limiting portion on the first suction accessory.

[0017] In the possible implementation, the limiting portions arranged on the opposite ends of the clamping member along the length direction have an avoiding gap therebetween, and the flexible circuit board is partially located in the avoiding gap, so as to avoid the flexible circuit board, enable the flexible circuit board to be fixed between the first main body portion and the first suction accessory in a smooth and flat manner, and facilitate reducing damage to the flexible circuit board.

[0018] In a possible implementation, the clamping member further comprises a first clamping portion, and the opposite ends of the first main body portion along the length direction are respectively provided with the first clamping portion. The first clamping portion is used for clamping cooperation with the second clamping portion in the through hole. When the clamping member is inserted into the through hole along the penetrating direction, the clamping cooperation between the first clamping portion and the second clamping portion can be used to realize the limiting and fixing of the clamping member on the rotating shaft, so as to limit the movement of the clamping member and the flexible circuit board relative to the rotating shaft in the plane formed by the width direction and the length direction.

[0019] In a possible implementation, the first clamping protrusion is arranged on the side of the first main body portion facing the first suction accessory, and the first clamping portion, the limiting portion and the first main body portion jointly form an accommodating space. The first clamping portion arranged on the opposite ends of the first main body portion along the length direction can also play a role in positioning the first suction accessory, so as to facilitate accurate positioning of the first suction accessory and the clamping member and facilitate installation. The first clamping portion can also play a role in limiting and fixing the first suction accessory, so as to limit the displacement of the first suction accessory relative to the clamping member along the length direction, further enhance the limiting strength between the clamping member and the first suction accessory, and reduce the pulling damage to the flexible circuit board.

[0020] In a possible implementation, the first clamping portion and the second clamping portion are clamped through an elastic protrusion and a groove. One of the first clamping portion and the second clamping portion comprises the elastic protrusion, and the other comprises the groove clamped with the elastic protrusion. Taking the first clamping portion comprising the elastic protrusion and the second clamping portion comprising the groove as an example, when the flexible circuit board is pulled, the flexible circuit board assembly is assembled with the rotating shaft, the clamping member moves along the penetrating direction and is inserted into the through hole, and the elastic protrusion can be compressed by the inner side wall of the through hole, that is, the elastic protrusion is compressed in the direction towards the first main body portion. Continue to pull the flexible circuit board to insert the clamping member, the elastic protrusion moves to the position of the groove, and the elastic protrusion will recover under the action of resilience, that is, the elastic protrusion moves in the direction away from the main body portion, so that the elastic protrusion is accommodated and clamped in the groove, and the clamping member can be connected and assembled with the rotating shaft through the cooperation of the elastic protrusion and the groove.

[0021] In the scene of disassembling the flexible circuit board, the flexible circuit board is pulled reversely, the clamping part is reversely moved, the elastic protrusion can be compressed again, so that the flexible circuit board can be disassembled from the rotating shaft, the structure design is simple, and production is convenient to realize.

[0022] In a possible implementation, the first clamping part includes an elastic protrusion, and the second clamping part is a groove, which is beneficial to simplify the design of the internal structure of the through hole of the rotating shaft, reduce the design and forming difficulty of the rotating shaft, and facilitate the guarantee of the strength of the rotating shaft.

[0023] If the first clamping part includes a connecting arm and a clamping arm, the connecting arm is connected with the first main part, the clamping arm has the connecting arm on each side in the penetrating direction, the two ends of the clamping arm are connected with the connecting arm respectively, and the middle part of the clamping arm protrudes away from the accommodation space to form an elastic protrusion. The part of the clamping arm is made into the elastic protrusion to realize the clamping and matching with the groove on the rotating shaft, and the two ends of the clamping arm are connected with the first main part through the connecting arm, which is beneficial to improve the strength of the clamping arm, improve the firmness of the elastic protrusion of the clamping arm and the groove on the rotating shaft, improve the reliability and stability of the clamping and matching of the clamping part and the rotating shaft, and reduce the movement or falling of the flexible circuit board in the scene of falling and the like.

[0024] In a possible implementation, the first clamping part includes an elastic protrusion, and the second clamping part is a groove, which is beneficial to simplify the design of the internal structure of the through hole of the rotating shaft, reduce the design and forming difficulty of the rotating shaft, and facilitate the guarantee of the strength of the rotating shaft.

[0025] The clamping part further includes a notch structure, the notch structure is located on one side of the first main part in the penetrating direction, and the first abutting face is exposed through the notch structure, for example, the first abutting face can be exposed through the notch structure in the penetrating direction. The notch structure is used for accommodating the first boss in part of the through hole, and the first abutting face is used for abutting matching with the first boss, so that the displacement of the flexible circuit board in the penetrating direction can be limited.

[0026] In this way, when the flexible circuit board is pulled in the penetrating direction to assemble the flexible circuit board assembly and the rotating shaft, the abutting of the first abutting face and the first boss can limit the continuous movement of the flexible circuit board assembly, the accurate positioning of the clamping part, the first clamping part and the rotating shaft can be realized, and damage caused by excessive pulling of the flexible circuit board can be avoided. For example, when the first boss abuts against the first abutting face during the pulling of the flexible circuit board, the first clamping part and the second clamping part are clamped, and the first clamping part and the second clamping part are clamped, so that the problem of excessive pulling of the flexible circuit board or assembly out of position can be avoided.

[0027] In addition, the abutting of the first abutting face of the first clamping part and the first boss can reduce the impact on the clamping part during the assembly of the flexible circuit board assembly, so that the width (width in the penetrating direction) of the first adhesive layer between the clamping part and the flexible circuit board can be ensured when the width of the first adhesive layer is narrow, and the narrow first adhesive layer can facilitate the bending of the flexible circuit board.

[0028] In a possible implementation, the first clamping part and the limiting part on the side of the first main part along the penetrating direction have a gap structure, which is convenient for molding. For example, when the limiting part is formed on the first clamping part, a gap is kept between the limiting part and the first clamping part to form the gap structure. The molding method is simple and convenient to implement, and is conducive to reducing the cost.

[0029] In a possible implementation, the side of the limiting part on the side of the first main part along the penetrating direction, away from the accommodation space, forms a second abutting surface. The second abutting surface is used for abutting cooperation with the second boss in the through hole. The abutting of the second boss and the second abutting surface can also limit the flexible circuit board along the penetrating direction, realize accurate positioning of the clamping piece and the first suction member on the rotating shaft, and avoid damage to the flexible circuit board caused by excessive pulling.

[0030] The abutting of the limiting part and the second boss does not require a gap structure, which is conducive to reducing the structural design difficulty of the clamping piece and reducing the design and processing cost.

[0031] In a possible implementation, the clamping piece further includes a first adhesive layer. The first adhesive layer is located between the first main part and the first surface. The clamping piece and the flexible circuit board are fixed by the first adhesive layer.

[0032] The flexible circuit board further includes a second adhesive layer. The second adhesive layer is located between the flexible circuit board and the first suction member. The first suction member and the flexible circuit board are fixed by the second adhesive layer.

[0033] The width of the first adhesive layer along the penetrating direction is smaller than the width of the second adhesive layer along the penetrating direction. The first adhesive layer has a relatively small width, and the first adhesive layer has a relatively small constraint on the first surface in the width direction. The influence of the first adhesive layer on the bending of the flexible circuit board is reduced or avoided, so that the flexible circuit board can be bent better.

[0034] In a possible implementation, the flexible circuit board includes a second main part and an extension part. The extension part is located on both sides of the second main part along the length direction. The extension part and part of the second main part are located in the accommodation space. The extension part is located in the accommodation space, which can position the assembly of the clamping piece and the flexible circuit board, realize accurate positioning and assembly of the clamping piece on the flexible circuit board, and further facilitate accurate positioning of the clamping piece and the first suction member on the flexible circuit board.

[0035] In a possible implementation, first positioning holes are respectively formed in both ends of the first main part along the length direction. Second positioning holes are respectively formed in the extension part. Third positioning holes are respectively formed in both ends of the first suction member along the length direction. The center lines of the first positioning holes, the second positioning holes, and the third positioning holes coincide in the thickness direction.

[0036] The first, second, and third positioning holes can be used to assist in positioning the first main body, the clip, and the flexible circuit board during assembly, further improving positioning accuracy. For example, after the first suction member, a portion of the flexible circuit board, and the clip are stacked, positioning rods can be used to sequentially penetrate the first, second, and third positioning holes along the thickness direction. The positioning rods can be aligned with the centerlines of the first, second, and third positioning holes, thereby achieving precise positioning and assembly of the clip, flexible circuit board, and the first suction member.

[0037] In one possible implementation, the aperture of the first positioning hole is equal to the aperture of the third positioning hole, and the aperture of the second positioning hole is respectively larger than the apertures of the first positioning hole and the second positioning hole, so that the aperture of the second positioning hole on the flexible circuit board is relatively large, reducing or avoiding the positioning rod colliding with or contacting the circuit structure on the flexible circuit board during the assembly process, such as when the positioning rod is used to assist in positioning, thereby ensuring the electrical connection performance of the flexible circuit board.

[0038] A second aspect of an embodiment of the present application provides a rotating shaft assembly, comprising at least a rotating shaft and any one of the above-mentioned flexible circuit board assemblies, wherein the rotating shaft has a through hole and a second adsorption member is disposed inside the rotating shaft.

[0039] The flexible circuit board is inserted through a through-hole on the rotating shaft. The first suction member is attached to the second suction member at one end, facing away from the flexible circuit board, along the thickness direction of the rotating shaft. The clipping member is inserted into the through-hole along the direction of insertion of the flexible circuit board and engages with the rotating shaft. This allows the flexible circuit board to be positioned relative to the rotating shaft through the clipping member and the first suction member, respectively. This provides high assembly stability and reliability, minimizing or preventing the flexible circuit board from moving or falling in situations such as drops, and reducing the risk of the rotating shaft breaking due to impact with the rotating shaft. Furthermore, the first and second suction members are located on the same side of the flexible circuit board. While meeting the required suction strength, this reduces the thickness and space occupied, thereby enhancing the strength of the rotating shaft and further improving its drop resistance. The clipping connection between the clipping member and the rotating shaft, as well as the suction-engaging cooperation between the first and second suction members, allows for convenient removal of the flexible circuit board from the rotating shaft, facilitating disassembly for repairs and other scenarios.

[0040] In one possible implementation, the second suction member is located on one inner wall of the through-hole along the thickness direction. The second suction member, the first suction member, a portion of the flexible printed circuit board, and at least a portion of the clip are stacked sequentially in the thickness direction, with the end of at least a portion of the clip facing away from the flexible printed circuit board abutting against the inner wall of the through-hole opposite the second suction member along the thickness direction. This eliminates any gap in the thickness direction between the stacked structure consisting of the second suction member, the first suction member, the flexible printed circuit board, and at least a portion of the clip and the rotating shaft, further enhancing the drop resistance of the rotating shaft.

[0041] In a possible implementation, the through hole is provided with a second clamping part on each of the two inner side walls opposite in the length direction, and the second clamping part is clamped and matched with the first clamping part of the clamping piece through the elastic protrusion and the groove. For example, the second clamping part can include a groove, the first clamping part can include an elastic protrusion, the groove of the second clamping part is clamped and matched with the elastic protrusion of the first clamping part, and the clamping and matching of the clamping piece and the rotating shaft is realized through the first clamping part and the second clamping part, which is simple in structure and convenient to realize.

[0042] In a possible implementation, a mounting groove is arranged on the inner wall of the through hole, and the second suction member is arranged in the mounting groove. The arrangement of the mounting groove can improve the fixing firmness of the second suction member on the rotating shaft, thereby facilitating the improvement of the fixing and limiting firmness of the flexible circuit board assembly and the rotating shaft.

[0043] In a possible implementation, the through hole has a first protruding boss inside, the first protruding boss is located on one side of the through hole in the penetrating direction, the first protruding boss partially extends into the notch structure on the clamping piece, the first protruding boss is abutted and matched with a first abutting surface on the first suction member, and the displacement of the flexible circuit board in the penetrating direction is limited. During the assembly of the flexible circuit board assembly and the rotating shaft, the abutment of the first protruding boss and the first abutting surface can realize the accurate positioning of the clamping piece and the first suction member on the rotating shaft, and damage to the flexible circuit board caused by excessive pulling is avoided.

[0044] In a possible implementation, the through hole has a second protruding boss inside, the second protruding boss is located on one side of the through hole in the penetrating direction, the second protruding boss is abutted and matched with a second abutting surface on the limiting part of the clamping piece, and the displacement of the flexible circuit board in the penetrating direction is also limited, the accurate positioning of the clamping piece and the first suction member on the rotating shaft is realized, and damage to the flexible circuit board caused by excessive pulling is avoided. Moreover, the abutment of the limiting part and the second protruding boss eliminates the need to design a notch structure, which facilitates the reduction of the structural design difficulty of the clamping piece and the reduction of the design and processing costs.

[0045] The third aspect of the embodiment of the present application provides a foldable electronic device, which at least includes two middle frames and the rotating shaft assembly of any of the above, the two middle frames are located on the two sides of the rotating shaft assembly respectively, and the two middle frames are rotationally matched through the rotating shaft assembly.

[0046] In a possible implementation, the foldable electronic device further includes a flexible screen, the flexible screen is arranged on the rotating shaft assembly and the middle frame, and the flexible screen is located on at least the outer surfaces of the middle frame and the rotating shaft assembly. When the electronic device is in a folded state, the outer surfaces of the two middle frames are opposite, and the outer surface of the rotating shaft assembly is located on the same side of the middle frame.

[0047] In one possible implementation, in the thickness direction, the flexible screen is located on the side of the second adsorbent facing away from the clip, that is, the first surface of the flexible circuit board is closer to the inner surface of the hinge assembly, and the second surface is closer to the outer surface of the hinge assembly. When the electronic device is in a folded state, the portion of the first surface of the flexible circuit board located in the first middle frame and the portion located in the second middle frame are opposite to each other, and the portion of the second surface of the flexible circuit board located in the first middle frame and the portion located in the second middle frame are opposite to each other. The width of the first adhesive layer between the clip and the first surface can be smaller than the width of the second adhesive layer between the first adsorbent and the second surface. The first adhesive layer has less constraint on the first surface in the width direction, reducing or avoiding the influence of the first adhesive layer on the bending of the flexible circuit board, so that the flexible circuit board can be bent better. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1 A schematic structural diagram of a foldable electronic device in a folded state provided by an embodiment of the present application;

[0049] Figure 2 for Figure 1 A schematic structural diagram of the foldable electronic device shown is in an intermediate state;

[0050] Figure 3 for Figure 1 A schematic diagram of the structure of the foldable electronic device shown is in a flattened state;

[0051] Figure 4 for Figure 1 A schematic diagram of the disassembled structure of a foldable electronic device is shown;

[0052] Figure 5 A schematic diagram of the assembly of a flexible circuit board and a rotating shaft in an electronic device of the related art;

[0053] Figure 6 A schematic diagram of a partially disassembled structure of a foldable electronic device provided in an embodiment of the present application;

[0054] Figure 7 for Figure 6 Schematic diagram of the disassembled structure of the rotating shaft assembly;

[0055] Figure 8 for Figure 7 A schematic diagram of a process state of assembling the flexible circuit board assembly and the shaft in the shaft assembly;

[0056] Figure 9 for Figure 7 A schematic structural diagram of the flexible circuit board and the rotating shaft assembly after assembly;

[0057] Figure 10 for Figure 9 Schematic diagram of the cross-sectional structure of the rotating shaft assembly along the AA plane;

[0058] Figure 11 For Figure 9 The cross-sectional structure of the transfer shaft assembly along the B-B plane is shown in the schematic view.

[0059] Figure 12 For Figure 11 The enlarged schematic view of the local structure at the fitting position of the first and second clamping parts is shown in the schematic view.

[0060] Figure 13 For Figure 7 The local schematic view of a split structure of the flexible circuit board assembly is shown in the schematic view.

[0061] Figure 14 For Figure 9 The cross-sectional structure of the transfer shaft in the shaft assembly is shown in the schematic view.

[0062] Figure 15 For Figure 6 The cross-sectional local structure of the electronic device is shown in the schematic view.

[0063] Figure 16 For Figure 7 The enlarged schematic view of the local structure of the flexible circuit board assembly at the clamping part is shown in the schematic view.

[0064] Figure 17 For Figure 7 The local schematic view of another split structure of the flexible circuit board assembly is shown in the schematic view.

[0065] Figure 18 For Figure 16 The structure of the clamping part is shown in the schematic view.

[0066] Figure 19 For Figure 16 The enlarged schematic view of the local structure of the flexible circuit board assembly at one end of the clamping part is shown in the schematic view.

[0067] Figure 20 For Figure 9 Another cross-sectional structure of the transfer shaft assembly is shown in the schematic view.

[0068] Figure 21 The cross-sectional local structure of the transfer shaft assembly in 20 is shown in the enlarged schematic view.

[0069] Figure 22 The cross-sectional local structure of another transfer shaft assembly provided by the embodiments of the present application is shown in the enlarged schematic view.

[0070] Explanation of reference signs:

[0071] 100 - electronic device

[0072] 101 - transfer shaft assembly

[0073] 10 - transfer shaft

[0074] 11-through hole;

[0075] 111 - second clamping portion; 112 - mounting groove; 113 - first boss; 114 - second boss;

[0076] 12- second adsorption member;

[0077] 13- third adhesive layer;

[0078] 20-flexible circuit board assembly;

[0079] 21-clip member; 21a-accommodation space;

[0080] 211-first main body; 2111-first positioning hole;

[0081] 212-first clamping portion; 212a-elastic protrusion; 2121-clamping arm; 2122-connecting arm;

[0082] 213-limiting portion; 2131-second abutting surface;

[0083] 214-notch structure;

[0084] 22-first adsorption member;

[0085] 221 - first abutting surface; 222 - third positioning hole;

[0086] 23-flexible circuit board; 23a-first surface; 23b-second surface;

[0087] 231-second main body; 232-extension portion; 2321-second positioning hole;

[0088] 24-first adhesive layer;

[0089] 25- second adhesive layer;

[0090] 26- electrical connection device;

[0091] 27-film;

[0092] 102-middle frame; 102a-first middle frame; 102b-second middle frame;

[0093] 103-flexible screen;

[0094] 104-Back cover. DETAILED DESCRIPTION

[0095] 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.

[0096] The foldable electronic devices provided in the embodiments of the present application may include, but are not limited to, foldable fixed or mobile terminals such as mobile phones, tablet computers, laptop computers, ultra-mobile personal computers (UMPCs), handheld computers, touch-screen televisions, walkie-talkies, netbooks, POS machines, personal digital assistants (PDAs), wearable devices, and virtual reality devices.

[0097] For example, taking the foldable electronic device as a foldable mobile phone as an example, the foldable mobile phone can be a foldable mobile phone with a screen folded outward, or the foldable mobile phone can also be a foldable mobile phone with part of the screen folded inward and part of the screen folded outward, etc.

[0098] In the embodiments of the present application, a foldable mobile phone with a foldable screen is taken as an example for description.

[0099] Figure 1 A schematic structural diagram of a foldable electronic device in a folded state provided in an embodiment of the present application.

[0100] See also Figure 1 As shown, the foldable electronic device 100 may include a hinge 10 and a middle frame 102, wherein the number of the middle frames 102 may be at least two. For example, taking the number of the middle frames 102 as an example, such as a first middle frame 102a and a second middle frame 102b, the first middle frame 102a and the second middle frame 102b are located on both sides of the hinge 10, and the first middle frame 102a and the second middle frame 102b are respectively connected to the hinge 10.

[0101] The rotating shaft 10 may be a structural component used to connect the two middle frames 102 and allow relative rotation between the two middle frames 102. The first middle frame 102a and the second middle frame 102b may be rotatably engaged with each other via the rotating shaft 10, allowing the first middle frame 102a and the second middle frame 102b to rotate relative to each other.

[0102] The first middle frame 102a and the second middle frame 102b can be folded relative to each other to a closed state. Figure 1 As shown, illustratively, the first middle frame 102a and the second middle frame 102b are in a closed state, and the two can be completely folded to be parallel to each other (a slight deviation is allowed). At this time, the electronic device 100 is in a closed state as a whole, also called a folded state.

[0103] Figure 2 for Figure 1 A schematic structural diagram of a foldable electronic device shown in an intermediate state.

[0104] See also Figure 2As shown, the first middle frame 102a and the second middle frame 102b can be relatively rotated (folded or unfolded) to an intermediate state, so that the electronic device 100 is in the intermediate state.

[0105] Figure 3 For Figure 1 As shown, the foldable electronic device is in a flat state.

[0106] Referring to Figure 3 As shown, the first middle frame 102a and the second middle frame 102b can be relatively unfolded to an open state. For example, the first middle frame 102a and the second middle frame 102b are in the open state, and the unfolding angle between the first middle frame 102a and the hinge 10, the hinge 10 and the second middle frame 102b can be approximately 180°, and the entire electronic device 100 is in the open state, also referred to as the flat state.

[0107] It should be noted that the angle illustrated in the examples of the embodiments of the present application allows for a slight deviation. For example, Figure 3 As shown, the unfolding angle of the foldable electronic device 100 can be 180°, or approximately 180°, such as 170°, 175°, 185° or 190°, etc. The angles illustrated in the examples below can be understood in the same way.

[0108] Among them, Figure 2 As shown, the intermediate state can be any state between the folded state and the flat state. That is, the electronic device 100 can be switched between the flat state (i.e., the open state) and the folded state (i.e., the closed state) through the movement of the hinge 10, thereby realizing the opening and closing of the electronic device 100.

[0109] For example, when the electronic device 100 is in the flat state, the first middle frame 102a and the second middle frame 102b are rotated towards each other to be relatively folded, which can realize the switching of the electronic device 100 from the flat state to the folded state (or the intermediate state). When the electronic device 100 is in the folded state, the first middle frame 102a and the second middle frame 102b are rotated away from each other to be relatively unfolded, which can realize the switching of the electronic device 100 from the folded state to the flat state (or the intermediate state).

[0110] The middle frame 102 can be a rectangular plate structure, in the embodiments of the present application, as shown in Figure 3 As shown, the width direction of the middle frame 102 (such as the first middle frame 102a) is the x direction, the length direction of the middle frame 102 is the y direction, and the thickness direction of the middle frame 102 is the z direction. It can be understood that the length direction of the hinge 10 can be the axial direction of the hinge, i.e., the extension direction of the hinge, and the length direction, width direction and thickness direction of the hinge 10 can be consistent with the length direction, width direction and thickness direction of the middle frame 102, respectively.

[0111] The length, width, and thickness in the embodiments of the present application are only for the convenience of description, and do not mean any limitation on the size. For example, the length can be greater than, equal to, or less than the width. It can be understood that the length direction, width direction, and thickness direction of the foldable electronic device 100 in the folded state or the flattened state can correspond to and be consistent with the length direction, width direction, and thickness direction of the middle frame 102.

[0112] Of course, in some other examples, the middle frame 102 can also be a flat plate structure in the shape of a square, a circle, an ellipse, a rounded rectangle, or the like.

[0113] It should be noted that the electronic device 100 can include only two middle frames 102, such as the number of the first middle frame 102a and the second middle frame 102b, which can each be one, so that the electronic device 100 is in a folded state, and the first middle frame 102a and the second middle frame 102b are relatively folded into two layers. For example, referring to Figure 1 As shown, the electronic device 100 includes one first middle frame 102a, one second middle frame 102b, and one rotating shaft 10, the first middle frame 102a and the second middle frame 102b are connected by the rotating shaft 10, and the first middle frame 102a and the second middle frame 102b are relatively folded in the folded state, so that the electronic device 100 is in the form of two layers of middle frames stacked.

[0114] Alternatively, the electronic device 100 can include multiple middle frames 102, and the number of the first middle frame 102a, the second middle frame 102b, and the rotating shaft 10 can be multiple, and adjacent first middle frames 102a and second middle frames 102b can be connected by a rotating shaft 10, so that the electronic device 100 can be folded into a multi-layer form. For example, the electronic device 100 can include two first middle frames 102a, one second middle frame 102b, and two rotating shafts 10, the two first middle frames 102a are located on both sides of the second middle frame 102b, and the two first middle frames 102a are respectively connected to the second middle frame 102b by a rotating shaft 10, wherein one of the first middle frames 102a can be relatively folded with the second middle frame 102b, and the other first middle frame 102a can also be relatively folded with the second middle frame 102b, so that the electronic device 100 is in a folded state, and the first middle frame 102a and the second middle frame 102b are relatively folded into a three-layer form of middle frames stacked. When one of the first middle frames 102a and the second middle frame 102b is relatively unfolded to a flattened state, the electronic device 100 is in a flattened state.

[0115] In the embodiments of the present application, the electronic device 100 includes two middle frames, the first middle frame 102a and the second middle frame 102b, and the first middle frame 102a and the second middle frame 102b are connected by one rotating shaft 10 to realize rotating cooperation.

[0116] Referring toFigure 3 As shown, the electronic device 100 can further include a foldable flexible screen 103, which is a display screen of the electronic device 100, and is used to display images, texts, videos, and the like.

[0117] The flexible screen 103 is laid on the hinge 10 and the middle frame 102. For example, the flexible screen 103 can be attached to the first middle frame 102a and the second middle frame 102b, and the flexible screen 103 can be located on the same side surface of the first middle frame 102a, the second middle frame 102b, and the hinge 10. When the first middle frame 102a and the second middle frame 102b are folded relative to each other, the part of the flexible screen 103 opposite to the hinge 10 is bent. When the first middle frame 102a and the second middle frame 102b are unfolded relative to each other, the hinge 10 and the bent part of the flexible screen 103 are also unfolded.

[0118] For example, for the foldable electronic device with the screen outside folding, the flexible screen 103 can be arranged on the outer surfaces of the first middle frame 102a, the second middle frame 102b, and the hinge 10. For the foldable electronic device with the screen inside folding, the flexible screen 103 can be arranged on the inner surfaces of the first middle frame 102a, the second middle frame 102b, and the hinge 10.

[0119] It can be understood that in some other examples, such as the three middle frame folding type electronic device described above, the flexible screen 103 is arranged on two first middle frames 102a, one second middle frame 102b, and the hinge 10. Part of the flexible screen 103 can be located on the inner surfaces of one of the first middle frames 102a, the hinge 10, and the second middle frame 102b, and part of the flexible screen 103 can be located on the outer surface of the other of the first middle frames 102a. Alternatively, in some examples, the flexible screen 103 can be located on the inner surfaces of the two first middle frames 102a, the second middle frame 102b, and the hinge 10.

[0120] For example, when the electronic device 100 is in the folded state, the two surfaces of the first middle frame 102a and the second middle frame 102b adjacent and opposite to each other can be the inner surfaces of the first middle frame 102a and the second middle frame 102b respectively, and the surface on the same side of the inner surfaces of the first middle frame 102a, the second middle frame 102b, and the hinge 10 is the inner surface of the hinge 10. The two surfaces of the first middle frame 102a and the second middle frame 102b opposite to each other are the outer surfaces of the first middle frame 102a and the second middle frame 102b respectively, and the surface on the same side of the outer surfaces of the first middle frame 102a, the second middle frame 102b, and the hinge 10 is the outer surface of the hinge 10.

[0121] Figure 4 For Figure 1 A split structure diagram of the foldable electronic device is shown.

[0122] Referring toFigure 4 As shown, the electronic device 100 can further include a back cover 104. The flexible screen 103 and the back cover 104 can be located on opposite sides of the two middle frames 102 and the hinge 10 along the thickness direction (z direction) respectively. The back cover 104, the flexible screen 103 and the middle frame 102 jointly form a containing cavity, which can be used to assemble various functional structural members of the electronic device 100.

[0123] The back cover 104 can serve as an appearance cover of the back of the electronic device 100, and play a role of protecting the internal structural members (such as circuit boards and batteries) of the electronic device 100 and improving the aesthetic appearance of the electronic device 100.

[0124] For example, the electronic device 100 can further include a circuit board, a battery, a charging management module, a power management module and the like (not shown in the figure), which can be fixed in the above-mentioned containing cavity.

[0125] The circuit board can include a processor, which can include an application processor (AP), a modem processor, a graphics processing unit (GPU), an image signal processor (ISP), a controller, a video codec, a digital signal processor (DSP), a baseband processor, a display processing unit (DPU) and / or a neural-network processing unit (NPU) and the like. The controller can be the nerve center and command center of the electronic device 100. The controller can generate operation control signals according to instruction operation codes and timing signals to complete the control of fetching and executing instructions. The processor can also be provided with a memory for storing instructions and data.

[0126] The processor can include one or more interfaces, which can be used to connect a charger to charge the electronic device 100, and can also be used to realize data transmission between the electronic device 100 and an external device, for example, can also be used to connect earphones, a projection device and the like.

[0127] The charging management module is configured to receive charging input from a charger. The charger can be a wireless charger or a wired charger. In some examples of wired charging, the charging management module can receive charging input from a wired charger through an interface. In some examples of wireless charging, the charging management module can receive wireless charging input through a wireless charging coil of the electronic device 100. The charging management module can charge the battery and also power the electronic device 100 through the power management module.

[0128] The power management module is configured to connect the battery, the charging management module, and the processor. The power management module receives input from the battery and / or the charging management module to power the processor, the memory, the flexible screen, the camera module, and the like. The power management module can also be configured to monitor parameters such as battery capacity, battery cycle count, battery health status (leakage, impedance), and the like.

[0129] In some examples, the power management module can be disposed in the processor of the circuit board. In other examples, the power management module and the charging management module can also be disposed in the same device.

[0130] The structure shown in the embodiments of the present application does not constitute a specific limitation on the electronic device 100. In other embodiments of the present application, the electronic device 100 can include more or fewer components than shown, or combine certain components, or split certain components, or different arrangement of components. For example, the electronic device 100 can also include a communication module, a camera module (e.g., a front-facing camera and a rear-facing camera), a microphone, a speaker, a flash, and the like.

[0131] The first middle frame 102a, part of the back cover 104, and part of the flexible screen 103 can enclose a receiving cavity, and the second middle frame 102b, part of the back cover 104, and part of the flexible screen 103 can enclose another receiving cavity, which can be used to accommodate the electronic components such as the processor, the flash, the microphone, the sensor, the camera module, the battery, the power management module, the charging management module, and the like.

[0132] The electronic device also includes a flexible circuit board configured to electrically connect the electronic components inside the electronic device. The flexible circuit board is arranged on the hinge, such that one end of the flexible circuit board can be located in the receiving cavity enclosed by the first middle frame, and the other end of the flexible circuit board can be located in the receiving cavity enclosed by the second middle frame, to electrically connect the electronic components in the two middle frames.

[0133] It can be understood that one end of the flexible circuit board can be fixed in the first middle frame, and the other end of the flexible circuit board can also be fixed in the second middle frame. When the first middle frame and the second middle frame are relatively rotated to fold or unfold, the flexible circuit board can be bent along with the rotation of the first middle frame and the second middle frame.

[0134] Figure 5 Figure 1 is a schematic view of the assembly of a flexible circuit board and a rotating shaft in a related art electronic device.

[0135] To realize the assembly and fixation of the flexible circuit board and the rotating shaft, the flexible circuit board and the rotating shaft usually adopt the magnetic attraction mode to realize the limiting and fixation. For example, as shown in Figure 2, the rotating shaft assembly 200 can include a rotating shaft 201, a flexible circuit board 202, a first magnet 203 and a second magnet 204. The first magnet 203 is fixed on one side of the flexible circuit board 202, and the second magnet 204 is fixed in the rotating shaft 201. After one end of the flexible circuit board 202 passes through the rotating shaft 201, the first magnet 203 and the second magnet 204 are located on the opposite sides of the flexible circuit board 202. The first magnet 203 faces one end of the flexible circuit board 202 and is attracted to the one end of the flexible circuit board 202 facing the second magnet 204, so that the first magnet 203 and the second magnet 204 can be attracted together, thereby realizing the fixation of the flexible circuit board 202 and the rotating shaft 201. Figure 5 However, the flexible circuit board 202 is located between the first magnet 203 and the second magnet 204. To ensure the assembly firmness of the flexible circuit board 202 and the rotating shaft 201, the thickness of the first magnet 203 and the second magnet 204 needs to be large to improve the magnetic attraction force. Therefore, a larger space is needed in the rotating shaft 201 to accommodate the two magnets, which weakens the strength of the rotating shaft 201 and increases the risk of the rotating shaft 201 breaking in the scenarios of falling, impact and the like. In addition, only the magnetic attraction force of the magnets can realize the limiting of the flexible circuit board 202 on the rotating shaft 201, and the limiting firmness and reliability are relatively weak. In the scenarios of falling, impact and the like, the movement and falling of the flexible circuit board 202 are prone to occur, the reliability is poor, and the risk of the rotating shaft 201 breaking is also increased.

[0136] Based on this, the embodiment of the present application provides a rotating shaft assembly, which includes a rotating shaft, a flexible circuit board, a clamping piece and a first suction member located on the flexible circuit board. When the flexible circuit board is arranged on the rotating shaft through the through hole, the first suction member can be located in the through hole and be connected with the second suction member in the rotating shaft to realize the limiting and fixation of the flexible circuit board, such as realizing the limiting of the movement of the flexible circuit board in the thickness direction relative to the rotating shaft, limiting the displacement of the flexible circuit board in the thickness direction in the scenarios of daily use or falling, and realizing the assembly of the flexible circuit board and the rotating shaft. Moreover, the first suction member and the second suction member are located on the same side of the flexible circuit board. Under the condition of having high suction force, the total thickness of the two suction members can be reduced, the thickness space occupied in the rotating shaft can be reduced, the strength of the rotating shaft can be improved, the risk of the rotating shaft breaking in the scenarios of falling, impact and the like can be reduced, and the service life and the use experience can be improved.

[0137]

[0138] ​The clamping piece can also be inserted into the through hole and clamped with the rotating shaft to limit and fix the flexible circuit board. For example, the flexible circuit board can be limited and fixed in the length direction and the width direction relative to the rotating shaft, the displacement of the flexible circuit board in the length direction and the width direction in daily use or in a falling scene is limited, the limiting firmness of the flexible circuit board and the rotating shaft is further improved, the movement or falling of the flexible circuit board in a falling or impact scene is reduced or avoided, and the risk of fracture of the rotating shaft caused by impact between the flexible circuit board, the first suction member and the rotating shaft is also reduced. In addition, the flexible circuit board and the rotating shaft can be conveniently disassembled, which is convenient for disassembly in a repair scene.

[0139] Figure 6 A partial disassembly structure schematic diagram of a foldable electronic device is provided in the embodiments of the present application.

[0140] Referring to Figure 6 As shown in the figure, the rotating shaft assembly 101 includes a flexible circuit board assembly 20 and a rotating shaft 10, the flexible circuit board assembly 20 includes a flexible circuit board 23, the flexible circuit board 23 is arranged on the rotating shaft 10, and the first middle frame 102a and the second middle frame 102b are respectively located on both sides of the rotating shaft 10.

[0141] The arrangement direction of the flexible circuit board 23 can intersect the thickness direction of the rotating shaft 10 and the length direction of the rotating shaft 10, that is, the arrangement direction and the thickness direction and the arrangement direction and the length direction can have a non-zero included angle.

[0142] For example, the arrangement direction of the flexible circuit board 23 can be perpendicular to the thickness direction and the length direction of the rotating shaft 10, that is, the arrangement direction can be parallel to the width direction (x direction), that is, one end of the flexible circuit board 23 can pass through the rotating shaft 10 along the x direction, so that one end of the flexible circuit board 23 can be arranged in the second middle frame 102b, the other end of the flexible circuit board 23 can be arranged in the second middle frame 102b, and part of the flexible circuit board 23 is arranged in the rotating shaft 10.

[0143] Of course, in some examples, the arrangement direction of the flexible circuit board 23 can also be not parallel to the width direction, and the arrangement direction can also intersect the width direction, that is, the arrangement direction and the width direction can also have a non-zero included angle. In the embodiments of the present application, the arrangement direction of the flexible circuit board 23 is perpendicular to the length direction and the thickness direction of the rotating shaft 10, and the arrangement direction is parallel to the width direction.

[0144] Figure 7 For Figure 6 A disassembly structure schematic diagram of a rotating shaft assembly.

[0145] Combined Figure 7As shown, the shaft 10 can be provided with a through hole 11, which can pass through the shaft 10 in the width direction (i.e. the direction of the through hole, such as the x direction in the figure), and the flexible circuit board 23 can be passed through the shaft 10 through the through hole 11.

[0146] In some examples, referring to Figure 7 As shown, the flexible circuit board assembly 20 can further include an electrical connection device 26, which can be a structure capable of connecting two active devices, and the electrical connection device 26 can be provided on the flexible circuit board 23, and the flexible circuit board 23 can be electrically connected to the electronic components in the middle frame through the electrical connection device 26. For example, one end of the flexible circuit board 23 can be provided with an electrical connection device 26, which can be a board-to-board connector (BTB) or the like.

[0147] Continuing to refer to Figure 7 As shown, the flexible circuit assembly further includes a clamping member 21 and a first suction member 22, which are respectively provided on the flexible circuit board 23, and the clamping member 21 and the first suction member 22 are used to limit and fix the flexible circuit board 23 and the shaft 10 when the flexible circuit board 23 is passed through the shaft 10, so that the flexible circuit board 23 and the shaft 10 are assembled and fixed together.

[0148] Figure 8 For Figure 7 A process state diagram of the assembly of the flexible circuit board assembly and the shaft in the shaft assembly, Figure 9 For Figure 7 A structure diagram of the assembly of the flexible circuit board and the shaft in the shaft assembly.

[0149] Referring to Figure 8 As shown, to realize the passing of the flexible circuit board 23 on the shaft 10, one end of the flexible circuit board 23 can be pulled to make the flexible circuit pass through the through hole 11 on the shaft 10 in the passing direction (x direction in the figure). The clamping member 21 and the first suction member 22 on the flexible circuit board 23 can move along the passing direction with the flexible circuit board 23 and enter the through hole 11, in combination with Figure 9 As shown, when the flexible circuit board 23 is passed through the shaft 10 through the through hole 11, the clamping member (not shown in the figure) and the first suction member (not shown in the figure) are respectively placed in the through hole 11 of the shaft 10 (refer to Figure 10 As shown), and are connected with the structure in the shaft 10 or the shaft 10.

[0150] Figure 10 For Figure 9 A cross-sectional structure diagram of the shaft assembly along the A-A plane in

[0151] Among them, referring toFigure 10 As shown, the second suction accessory 12 is arranged in the rotating shaft 10, and the first suction accessory 22 and the second suction accessory 12 can be two structure members capable of being connected by suction, for example, the first suction accessory 22 and the second suction accessory 12 can be magnetic suction accessories. For example, the first suction accessory 22 and the second suction accessory 12 can be magnets, the first suction accessory 22 can have two magnetic poles, for example, N pole and S pole, and the second suction accessory 12 can also have two magnetic poles, for example, N pole and S pole, and the two magnetic poles of the first suction accessory 22 and the second suction accessory 12 with opposite polarity can be magnetically attracted and matched.

[0152] For example, when the N pole of the first suction accessory 22 is close to or abuts against the S pole of the second suction accessory 12, the first suction accessory 22 and the second suction accessory 12 can be magnetically attracted and matched to achieve the suction connection between the first suction accessory 22 and the second suction accessory 12. Alternatively, when the S pole of the first suction accessory 22 is close to or abuts against the N pole of the second suction accessory 12, the first suction accessory 22 and the second suction accessory 12 can be magnetically attracted and matched to achieve the suction connection between the first suction accessory 22 and the second suction accessory 12.

[0153] When the flexible circuit board 23 is arranged on the rotating shaft 10 through the through hole 11, the first suction accessory 22 can enter the through hole 11 and be connected to the second suction accessory 12 in the through hole 11 by suction, and specifically, one end of the first suction accessory 22 away from the flexible circuit board 23 in the thickness direction (z direction) is connected to the second suction accessory 12 by suction, for example, one end of the first suction accessory 22 away from the flexible circuit board 23 in the thickness direction is opposite to the polarity of one end of the second suction accessory 12 facing the first suction accessory 22, so that the first suction accessory 22 and the second suction accessory 12 can be magnetically attracted and matched to be connected together.

[0154] The suction connection between the first suction accessory 22 and the second suction accessory 12 can achieve the limiting and fixing of the flexible circuit board 23, for example, the movement of the flexible circuit board 23 in the thickness direction relative to the rotating shaft 10 can be limited, the displacement of the flexible circuit board 23 in the thickness direction in the daily use or drop scene can be limited, and the assembly and fixing of the flexible circuit board 23 and the rotating shaft 10 can be achieved.

[0155] It can be understood that the suction between the first suction accessory 22 and the second suction accessory 12 can be separated under the action of a certain external force, for example, when the external force is greater than the suction force between the first suction accessory 22 and the second suction accessory 12, the first suction accessory 22 and the second suction accessory 12 will be separated under the action of the external force.

[0156] One end of the first suction accessory 22 away from the flexible circuit board 23 is connected to the second suction accessory 12 by suction, for example, Figure 10As shown, the second suction member 12 can be located on the side of the first suction member 22 away from the flexible circuit board 23, that is, in the thickness direction. The first suction member 22 and the second suction member 12 are located on the same side of the flexible circuit board 23, ensuring a high suction force between the first suction member 22 and the second suction member 12. Under the condition of ensuring the limiting firmness between the flexible circuit board 23 and the shaft 10, the thickness of the first suction member 22 and the second suction member 12 can be reduced, that is, the thickness space occupied in the shaft 10 is reduced, the strength of the shaft 10 is improved, thereby reducing the risk of breaking of the shaft 10 in the scene of falling, impact, etc., and improving the service life and use experience.

[0157] For example, continuing to refer to Figure 10 As shown, in order to protect the first suction member 22 and the second suction member 12, a film 27 can be arranged between the first suction member 22 and the second suction member 12. For example, the film 27 can be a polyethylene terephthalate (PET) film. The film 27 can reduce or avoid friction damage to the first suction member 22 and / or the second suction member 12 during the process of the first suction member 22 entering the through hole 11 along the penetrating direction and being suctioned by the second suction member 12.

[0158] The film 27 can be fixed on the first suction member 22, or the film 27 can be fixed on the second suction member 12, or the first suction member 22 and the second suction member 12 can be provided with the film 27.

[0159] The clamping piece 21 can be inserted into the through hole 11 along the penetrating direction of the flexible circuit board 23 and be clamped and matched with the shaft 10. That is, the clamping piece 21 and the shaft 10 are connected in a detachable manner through clamping and matching.

[0160] When the flexible circuit board 23 is penetrated through the shaft 10 through the through hole 11, the clamping piece 21 can be inserted into the through hole 11 along the penetrating direction of the flexible circuit board 23 (refer to Figure 8 and Figure 9The clamping piece 21 can be clamped and matched with the rotating shaft 10, so that the flexible circuit board 23 can be clamped and connected with the rotating shaft 10 through the clamping piece 21, and the movement of the flexible circuit board 23 relative to the rotating shaft 10 in the length direction and the width direction can be limited. The displacement of the flexible circuit board 23 in the length and width directions in the daily use or drop scene can be limited, the limiting firmness of the flexible circuit board 23 and the rotating shaft 10 is further improved, and the assembly stability and reliability of the flexible circuit board 23 are improved. The movement or falling off of the flexible circuit board 23 in the drop, impact and other scenes can be reduced or avoided, and the risk of the rotating shaft 10 being broken due to the impact between the flexible circuit board 23, the first suction member 22 and the rotating shaft 10 can also be reduced, the service life and use experience are further improved.

[0161] The clamping piece 21 can also be detached from the rotating shaft 10, and the first suction member 22 and the second suction member 12 can also be separated under the action of a certain external force. For example, the other end of the flexible circuit board 23 is pulled in the opposite direction, so that the clamping piece 21 is separated from the rotating shaft 10, the first suction member 22 is separated from the second suction member 12, and the flexible circuit board 23 is also detached from the rotating shaft 10. The disassembly convenience of the flexible circuit board 23 is significantly improved, and the disassembly in the repair scene is facilitated.

[0162] That is, in the scene of assembling the flexible circuit board assembly 20 and the rotating shaft 10, one end of the flexible circuit is pulled through the through hole 11 on the rotating shaft 10, so that the flexible circuit board 23 is arranged on the rotating shaft 10, and the clamping piece 21 and the first suction member 22 enter the through hole 11. The clamping piece 21 is clamped and matched with the rotating shaft 10, the first suction member 22 is connected with the second suction member 12, and the assembly of the flexible circuit board 23 and the rotating shaft 10 is completed. The assembly method is simple and easy to operate.

[0163] In the disassembly repair scene of the flexible circuit board assembly 20, the other end of the flexible circuit board 23 can be pulled in the opposite direction, so that the clamping piece 21 is separated from the rotating shaft 10, the first suction member 22 is separated from the second suction member 12, and the flexible circuit board 23 is pulled out of the through hole 11 of the rotating shaft 10. The disassembly of the flexible circuit board 23 is completed.

[0164] Figure 11 For Figure 9 The cross-sectional structure of the rotating shaft assembly along the B-B plane.

[0165] Among them, in order to realize the clamping and matching between the clamping piece 21 and the rotating shaft 10. For example, see Figure 11As shown, the clamping piece 21 can include a first body part 211, which can serve as the main structural part of the clamping piece 21 to achieve assembly fixation with the flexible circuit board 23. For example, the first body part 211 of the clamping piece 21 can be fixedly attached to the first surface 23a of the flexible circuit board 23 to achieve assembly fixation of the clamping piece 21 with the flexible circuit board 23.

[0166] The clamping piece 21 can further include a first clamping part 212, which can be respectively provided on the end portions of the first body part 211 at opposite ends in the length direction (y direction). The second clamping part 111 can be provided on the through hole 11, which can be respectively provided on the opposite inner side walls of the through hole 11 in the length direction.

[0167] The first clamping part 212 can be clamped and matched with the second clamping part 111, so that when the clamping piece 21 is inserted into the through hole 11 in the width direction (x direction), the clamping piece 21 can be limited and fixed with the rotation shaft 10 through the clamping and matching of the first clamping part 212 and the second clamping part 111, and the movement of the clamping piece 21 and the flexible circuit board 23 relative to the rotation shaft 10 in the x-y plane is limited.

[0168] Among them, the first clamping part 212 and the second clamping part 111 can be structural components that can be clamped and matched, such as the first clamping part 212 and the second clamping part 111 can be buckles and slots respectively. Alternatively, one of the first clamping part 212 and the second clamping part 111 can be an elastic card, which can have a groove on the card, and the other can be a protrusion, which can be clamped and matched with the groove on the elastic card.

[0169] Alternatively, one of the first clamping part 212 and the second clamping part 111 can include an elastic protrusion 212a, and the other can be a groove that can be clamped and matched with the elastic protrusion 212a.

[0170] For example, continuing to refer to Figure 11 As shown, the first clamping part 212 of the clamping piece 21 includes an elastic protrusion 212a, and the second clamping part 111 of the inner side wall of the through hole 11 of the rotation shaft 10 is a groove. When the clamping piece 21 is moved and inserted into the through hole 11 in the penetrating direction (width direction, i.e. x direction), the elastic protrusion 212a can be compressed by the inner side wall of the through hole 11, i.e. the elastic protrusion 212a is compressed in the direction towards the first body part 211.

[0171] Continuing to pull the flexible circuit board 23 to insert the clamping piece 21, the elastic protrusion 212a moves to the recess position, and the elastic protrusion 212a will restore under the action of resilience, that is, the elastic protrusion 212a moves away from the first body part 211 direction, so that the elastic protrusion 212a is accommodated and clamped in the recess, so that the clamping piece 21 can be connected and assembled with the rotating shaft 10 through the cooperation of the elastic protrusion 212a and the recess.

[0172] In the scene of disassembling the flexible circuit board 23, the flexible circuit board 23 is pulled in the opposite direction, so that the clamping piece 21 moves in the opposite direction, and the elastic protrusion 212a can be compressed again, so that it can be detached from the rotating shaft 10. The structure design is simple and convenient for production.

[0173] Among them, the first clamping part 212 includes an elastic protrusion 212a, and the second clamping part 111 is a recess, which is beneficial to simplify the design of the internal structure of the through hole 11 of the rotating shaft 10, reduce the design and forming difficulty of the rotating shaft 10, and also facilitate to ensure the strength of the rotating shaft 10 and facilitate implementation.

[0174] Figure 12 For Figure 11 The local structure of the first clamping part and the second clamping part is enlarged and shown in the figure.

[0175] For example, referring to Figure 12 As shown in the figure, the first clamping part 212 can include a clamping arm 2121 and a connecting arm 2122, the clamping arm 2121 is connected with the connecting arm 2122, and the connecting arm 2122 is connected with the first body part 211 (refer to Figure 18 As shown in the figure), so as to fix the first clamping part 212 and the first body part 211 together.

[0176] The connecting arm 2122 can include two, and the two connecting arms 2122 can be located on both sides of the clamping arm 2121 along the penetrating direction. The two ends of the clamping arm 2121 can be connected with the two connecting arms 2122 respectively, and the middle part of the clamping arm 2121 can be protruded (such as protruding away from the other first clamping part 212 along the length direction) to form the elastic protrusion 212a. It should be noted that the middle part of the clamping arm 2121 can refer to the part between the two ends of the clamping arm 2121.

[0177] By forming the elastic protrusion 212a on part of the clamping arm 2121 to realize the clamping cooperation with the recess on the rotating shaft 10, and connecting the two ends of the clamping arm 2121 with the first body part 211 through the connecting arm 2122, it is beneficial to improve the strength of the clamping arm 2121, and then improve the firmness of the elastic protrusion 212a of the clamping arm 2121 and the recess on the rotating shaft 10, improve the reliability and stability of the clamping cooperation between the clamping piece 21 and the rotating shaft 10, and facilitate to reduce the movement or falling off of the flexible circuit board 23 in the scene of falling off and the like.

[0178] The outer surface of the elastic protrusion 212a can be arc-shaped, and the inner surface of the groove can also be arc-shaped, so as to facilitate the accommodation and clamping of the elastic protrusion 212a in the groove when the clamping piece 21 moves in the penetrating direction, realize the clamping of the elastic protrusion 212a and the groove, and facilitate the convenience of assembly. Correspondingly, in the scenario of disassembling the flexible circuit board, the elastic protrusion 212a can also be facilitated to move out of the groove, reducing the disassembly difficulty of the flexible circuit board.

[0179] It can be understood that when the first clamping part 212 of the clamping piece 21 is clamped and matched with the second clamping part 111 of the rotating shaft 10 during the assembly of the flexible circuit board assembly 20, the first and second suction members 22 and 12 are matched and matched to ensure the high assembly firmness of the flexible circuit board assembly 20. When the elastic protrusion 212a of the clamping piece 21 is accommodated and clamped in the groove on the rotating shaft 10, the position of the first suction member 22 can correspond to the second suction member 12 in the thickness direction, such as the projection of the first and second suction members 22 and 12 in the thickness direction, to ensure that the first and second suction members 22 and 12 have strong suction effect.

[0180] It should be noted that the clamping piece 21 can be arranged on one side surface of the flexible circuit board 23, and the clamping piece 21 can be at least partially fixed on one side surface of the flexible circuit board 23, such as the first main body part 211 of the clamping piece 21 can be fixed on one side surface of the flexible circuit board 23. Alternatively, the clamping piece 21 can be fixed on one side surface of the flexible circuit board 23.

[0181] In some examples, at least part of the clamping piece 21 and the first suction member 22 can be arranged on the same side surface of the flexible circuit board 23, such as the first main body part 211 of the clamping piece 21 and the first suction member 22 can be arranged in sequence on one side of the flexible circuit board 23 in the penetrating direction, and the first suction member 22 and the second suction member 12 are connected by suction at the same time as the clamping of the clamping piece 21 and the rotating shaft 10.

[0182] Alternatively, at least part of the clamping piece 21 and the first suction member 22 can be arranged on two opposite side surfaces of the flexible circuit board 23, respectively, for example, the first main body part 211 of the clamping piece 21 and the first suction member 22 can be located on two sides of the flexible circuit board 23 in the thickness direction.

[0183] Figure 13 For Figure 7 A partial view of a disassembly structure of a flexible circuit board assembly.

[0184] For example, Figure 13As shown, the flexible circuit board 23 may include a first surface 23a and a second surface 23b. The first surface 23a and the second surface 23b may be opposite to each other in the thickness direction of the flexible circuit board 23. The first main body 211 of the clamping member 21 may be located on the first surface 23a of the flexible circuit board 23, and the first adsorption member 22 may be located on the second surface 23b of the flexible circuit board 23 (see FIG. Figure 15 As shown). The first main body 211, part of the flexible circuit board 23 and the first adsorption member 22 can be stacked in sequence in the thickness direction (refer to Figure 10 As shown), the first main body 211, part of the flexible circuit board 23 and the first adsorption member 22 can form a stacked structure, and the vertical projections of the first main body 211, the flexible circuit board 23 and the first adsorption member 22 in the thickness direction at least partially overlap.

[0185] Continue to see Figure 13 As shown, the flexible circuit board assembly 20 may further include a first adhesive layer 24 and a second adhesive layer 25 , both of which may be glue layers. The clip 21 may be bonded and fixed to the flexible circuit board 23 via the first adhesive layer 24 .

[0186] For example, the first adhesive layer 24 can be located between the first main body portion 211 of the clip 21 and the first surface 23a of the flexible circuit board 23, so that the first main body portion 211 is adhered and fixed to the first surface 23a of the flexible circuit board 23 through the first adhesive layer 24, thereby achieving fixation between the clip 21 and the flexible circuit board 23.

[0187] The second adhesive layer 25 may be located between the first adsorption component 22 and the second surface 23 b of the flexible circuit board 23 . The first adsorption component 22 may be adhered and fixed to the second surface 23 b of the flexible circuit board 23 through the second adhesive layer 25 .

[0188] Figure 14 for Figure 9 Schematic diagram of the cross-sectional structure of the rotating shaft in the rotating shaft assembly.

[0189] See also Figure 14 As shown, the rotating shaft assembly may include a third adhesive layer 13 , which is located between the rotating shaft 10 and the second adsorption member 12 . The second adsorption member 12 may be fixed in the rotating shaft 10 through the third adhesive layer 13 .

[0190] For example, the second adsorption member 12 may be located on one inner wall of the through hole 11 along the thickness direction, that is, the through hole 11 may include two inner walls opposite to each other in the thickness direction, and the second adsorption member 12 may be fixed on one of the inner walls. Figure 14 As shown, the through hole 11 may include inner walls 11a and 11b opposite to each other in the thickness direction (see Figure 15The second suction member 12 can be fixed on the inner wall 11a of the through hole 11.

[0191] For example, a mounting groove 112 can be formed on the inner wall 11a of the through hole 11. The third adhesive layer 13 can be located between the groove bottom of the mounting groove 112 and the second suction member 12, so that the second suction member 12 can be fixed in the mounting groove 112 through the third adhesive layer 13. The provision of the mounting groove 112 can improve the fixing firmness of the second suction member 12 on the rotating shaft 10, thereby facilitating the improvement of the fixing and limiting firmness of the flexible circuit board assembly 20 and the rotating shaft 10.

[0192] Of course, in some examples, the mounting groove 112 can also not be formed on the inner wall of the through hole 11, for example, the second suction member 12 can be fixed on one of the two opposite inner walls of the through hole 11 in the thickness direction through the third adhesive layer 13.

[0193] Figure 15 For Figure 6 A cross-sectional partial structure front view of an electronic device.

[0194] When the flexible circuit board 23 is fixed and assembled with the rotating shaft 10 through the clamping piece 21, the first suction member 22 and the rotating shaft 10, the end of the first suction member 22 away from the flexible circuit board 23 can be in abutment and adsorbed connection with the second suction member 12, and the end of the first main body 211 away from the flexible circuit board 23 can be in abutment with the inner wall 11b of the through hole 11.

[0195] That is, the second suction member 12, the first suction member 22, part of the flexible circuit board 23 and the first main body 211 are sequentially stacked in the thickness direction, and the second suction member 12 can be fixed on the inner wall 11a (or the mounting groove bottom) of the through hole 11, and the first main body 211 can be in abutment with the inner wall 11b of the through hole 11. There is no gap between the second suction member 12 and the inner wall 11a (or the mounting groove bottom) of the through hole 11, and there is no gap between the first main body 211 and the inner wall 11b of the through hole 11, that is, the laminated structure composed of the second suction member 12, the first suction member 22, the flexible circuit board 23 and the first main body 211 can collectively fill the through hole 11 (and the mounting groove) in the thickness direction, and there can be no gap in the thickness direction between the laminated structure and the rotating shaft 10 (or the two inner walls of the through hole 11 in the thickness direction). In the scenario of falling, impact and the like, the problem of impact movement of the flexible circuit board assembly 20 and the rotating shaft 10 is not easy to occur, further improving the falling strength of the rotating shaft assembly 101, and significantly reducing the risk of breakage of the rotating shaft 10.

[0196] Figure 16 For Figure 7 An enlarged schematic view of a partial structure of a flexible circuit board assembly at a clamping piece.

[0197] For example, referring toFigure 16 As shown, the clamping member 21 can further include a limiting portion 213, and the number of the limiting portion 213 can be at least two, i.e. the number of the limiting portion 213 is multiple, and at least two of the multiple limiting portions 213 are respectively located on two opposite sides of the first body portion 211 along the penetrating direction (x direction), i.e. part of the limiting portions 213 are located on one side of the two opposite sides of the first body portion 211 along the penetrating direction, and part of the limiting portions 213 are located on the other side, so that the limiting portions 213 can be provided on at least the two opposite sides of the first body portion 211 along the penetrating direction.

[0198] Figure 17 For Figure 7 Another partial schematic view of the split structure of the flexible circuit board assembly.

[0199] Referring to Figure 17 As shown, the first suction member 22 and the first body portion 211 of the clamping member 21 are respectively fixed on the second surface 23b and the first surface 23a of the flexible circuit board 23, and the limiting portion 213 is protrudingly arranged on the side of the first body portion 211 facing the first suction member 22, e.g. one end of the limiting portion 213 can be fixed on the side of the first body portion 211 facing the first suction member 22, and the other end of the limiting portion 213 can extend away from the first body portion 211 and towards the first suction member 22, e.g. the other end of the limiting portion 213 can extend towards the first suction member 22 along the thickness direction (z direction), so that the limiting portion 213 can protrude from the side of the first body portion 211 facing the first suction member 22, and the multiple protruding limiting portions 213 and the first body portion 211 can jointly enclose a receiving space 21a.

[0200] The first clamping portion 212 can also be protrudingly arranged on the side of the first body portion 211 facing the first suction member 22, i.e. one end of the first clamping portion 212 can be connected with the first body portion 211, and the other end of the first clamping portion 212 can extend away from the first body portion 211 and towards the first suction member 22, e.g. the other end of the first clamping portion 212 can extend towards the first suction member 22 along the thickness direction (z direction), so that the first clamping portion 212 can protrude from the side of the first body portion 211 facing the first suction member 22, and the first clamping portion 212, the limiting portion 213 and the first body portion 211 can jointly enclose the above-mentioned receiving space 21a.

[0201] In combination Figure 16As shown, the first suction accessory 22 is located in the accommodating space 21a formed by the limiting portion 213, the first clamping portion 212 and the first main body portion 211, the accommodating space 21a can play a positioning role for the assembly of the first suction accessory 22 and the clamping piece 21, facilitate assembly, and facilitate accurate positioning of the first suction accessory 22 and the clamping piece 21, so as to ensure that the first suction accessory 22 and the second suction accessory 12 are adsorbed and connected when the clamping piece 21 is clamped with the rotating shaft 10.

[0202] The limiting portion 213 on the opposite sides of the first main body portion 211 in the penetrating direction can also limit and fix the first suction accessory 22, limit the displacement of the first suction accessory 22 relative to the clamping piece 21 in the penetrating direction, improve the consistency of the movement of the clamping piece 21 and the first suction accessory 22 in the penetrating direction, and prevent the flexible circuit board 23 from being pulled due to excessive slippage of the first adhesive layer 24, the second adhesive layer 25 and other adhesive layers during the process of assembling or disassembling the flexible circuit board assembly 20, thereby causing damage to the flexible circuit board 23.

[0203] The first clamping portion 212 on the opposite ends of the first main body portion 211 in the length direction can also limit and fix the first suction accessory 22, limit the displacement of the first suction accessory 22 relative to the clamping piece 21 in the length direction (y direction), further enhance the limiting strength between the clamping piece 21 and the first suction accessory 22, and reduce the pulling damage to the flexible circuit board 23.

[0204] For example, the clamping piece 21 can be an integral structure, that is, the first main body portion 211, the first clamping portion 212 and the limiting portion 213 can be formed into an integral structure by integral molding, so that the first main body portion 211, the first clamping portion 212 and the limiting portion 213 have high bonding strength, which is beneficial to improving the stability and strength of the clamping piece 21.

[0205] Alternatively, in some examples, the first main body portion 211, the first clamping portion 212 and the limiting portion 213 can also be independently formed, and the first main body portion 211, the first clamping portion 212 and the limiting portion 213 can be assembled together by adhesive connection, welding connection, clamping connection and threaded fastening to form the clamping piece 21.

[0206] The number of limiting portions 213 can be two, and the two limiting portions 213 are respectively located on the opposite sides of the first main body portion 211 in the penetrating direction. For example, as shown in FIG. 1, the two limiting portions 213 are respectively located on the opposite sides of the first main body portion 211 in the penetrating direction. Figure 16As shown, the clamping piece 21 can only include the limiting portions 213a and 213b, which are respectively located on the two sides of the first body portion 211 opposite in the penetrating direction, and the limiting portions 213a, 213b and the first body portion 211 enclose the accommodating space 21a to realize the positioning and limiting of the first suction accessory 22. Alternatively, the clamping piece 21 can also only include the limiting portions 213a and 213c, which are also respectively located on the two sides of the first body portion 211 opposite in the penetrating direction, and the limiting portions 213a, 213c and the first body portion 211 enclose the accommodating space 21a. Alternatively, the clamping piece 21 can also only include the limiting portions 213b and 213d located on the two sides of the first body portion 211 opposite in the penetrating direction. Alternatively, the clamping piece 21 can also only include the limiting portions 213c and 213d located on the two sides of the first body portion 211 opposite in the penetrating direction.

[0207] Alternatively, the number of limiting portions 213 can also be more than two, part of the limiting portions 213 can be located on one side of the two sides of the first body portion 211 opposite in the penetrating direction, and part of the limiting portions 213 can be located on the other side of the two sides of the first body portion 211 opposite in the penetrating direction. For example, referring to Figure 16 As shown, taking the number of limiting portions 213 as four as an example, such as the limiting portions 213a, 213b, 213c and 213d, the limiting portions 213a and 213d can be respectively located on one side of the two sides of the first body portion 211 opposite in the penetrating direction, and the limiting portions 213b and 213c can be respectively located on the other side of the two sides of the first body portion 211 opposite in the penetrating direction, and the limiting portions 213a, 213b, 213c, 213d and the first body portion 211 enclose the accommodating space 21a to realize the positioning and limiting of the first suction accessory 22.

[0208] To improve the positioning and limiting effect of the limiting portions 213 on the first suction accessory 22, the plurality of limiting portions 213 can be respectively distributed on the two ends of the clamping piece 21 opposite in the length direction (y direction), that is, part of the limiting portions 213 can be located on one end of the two ends of the clamping piece 21 opposite in the length direction, and part of the limiting portions 213 can be located on the other end, to ensure the consistency of the positioning and limiting of the first suction accessory 22 in the length direction and to enhance the positioning and limiting strength of the first suction accessory 22.

[0209] For example, referring to Figure 16As shown, among the four limiting portions 213, the limiting portion 213a and the limiting portion 213c can be located on one of the two ends of the first body portion 211 along the length direction, and the limiting portion 213b and the limiting portion 213d can be located on the other of the two ends of the first body portion 211 along the length direction, so that the four limiting portions 213 can have a good positioning and limiting effect on the first suction accessory 22.

[0210] For example, the first body portion 211 can be a rectangular sheet structure, and when the clamping piece 21 is actually formed, four protruding extension portions can be formed near the four corners of the rectangular first body portion 211 when the first body portion 211 is formed. By bending the four extension portions so that the extension portions protrude on one side of the first body portion 211, the four limiting portions 213 described above can be formed.

[0211] It can be understood that, in order to avoid the flexible circuit board 23 between the first body portion 211 and the first suction accessory 22, the limiting portions 213 distributed on the opposite ends of the clamping piece 21 along the length direction can have an avoidance gap, and part of the flexible circuit board 23 is located in the avoidance gap, thereby avoiding the flexible circuit board 23, so that the flexible circuit board 23 can be fixed smoothly between the first body portion 211 and the first suction accessory 22, which is beneficial to reducing damage to the flexible circuit board 23.

[0212] For example, referring to Figure 16 As shown, taking the limiting portion 213a and the limiting portion 213d (or the limiting portion 213b) as an example, the limiting portion 213a and the limiting portion 213d (or the limiting portion 213b) have a gap in the length direction to form an avoidance gap (see Figure 18 As shown), part of the flexible circuit board is located between the clamping piece and the first suction accessory, and part of the flexible circuit board is arranged through the avoidance gap. For example, taking the limiting portion 213c and the limiting portion 213b (or the limiting portion 213d) as an example, the limiting portion 213c and the limiting portion 213b (or the limiting portion 213d) also have a gap in the length direction to form an avoidance gap.

[0213] It should be noted that when the number of limiting portions 213 is two, the two limiting portions 213 can also be located on the opposite ends of the first body portion 211 along the length direction, as shown in Figure 16 As shown, taking the limiting portion 213a and the limiting portion 213b as an example, the limiting portion 213a and the limiting portion 213b are located on the two ends of the first body portion 211 along the length direction, and the limiting portion 213a and the limiting portion 213b are also located on the two sides of the first body portion 211 along the penetrating direction.

[0214] Alternatively, the two limiting portions 213 can be respectively located on two sides of the first body portion 211 along the penetrating direction, and each limiting portion 213 can extend along the length direction, such that the two ends of each limiting portion 213 can respectively extend to the two ends of the first body portion 211 opposite along the length direction.

[0215] Alternatively, in some examples, in order to improve the positioning and limiting effect of the limiting portion 213 on the first suction accessory 22, the limiting portion 213 can have a certain length. For example, taking the case where the number of limiting portions 213 is two as an example, the two limiting portions 213 can be located on one end of the first body portion 211 along the length direction, and the two limiting portions 213 can be respectively located on two sides of the first body portion 211 opposite along the penetrating direction. For example, taking the case where the clamping piece 21 only includes the limiting portion 213a and the limiting portion 213c as an example (see Figure 16 The length of each limiting portion 213 can account for a relatively large proportion of the length of the first body portion 211, for example, the length of the limiting portion 213 can be half of the length of the first body portion 211. By increasing the contact limiting area of the limiting portion 213 with the first suction accessory 22 along the length direction, the positioning and limiting effect on the first suction accessory 22 can be improved.

[0216] In order to realize the avoidance of the flexible circuit board 23, for example, an opening can be formed on each limiting portion 213, so that the flexible circuit board 23 penetrates through the opening of the limiting portion 213, which can also ensure good limiting and positioning effect of the flexible circuit board 23 and reduce damage to the flexible circuit board 23.

[0217] As shown in Figure 17 The flexible circuit board 23 can include a second body portion 231 and an extension portion 232, for example, two extension portions 232 can be respectively located on two sides of the second body portion 231 along the length direction, the extension portion 232 and part of the second body portion 231 can be located in the above-mentioned accommodating space 21a of the clamping piece 21, and part of the second body portion 231 can pass through the avoidance gap between the limiting portions 213 or the opening of the limiting portion 213. By locating the extension portion 232 in the accommodating space 21a, the assembly of the clamping piece 21 and the flexible circuit board 23 can be positioned, the clamping piece 21 can be precisely positioned and assembled on the flexible circuit board 23, and then the precise positioning of the clamping piece 21 and the first suction accessory 22 on the flexible circuit board 23 during assembly can be realized.

[0218] For example, the first suction member 22, the partial flexible circuit board 23 and the first main body part 211 are sequentially stacked, the projections of the two ends of the first main body part 211 along the length direction, the two extension parts 232 and the two ends of the first suction member 22 along the length direction (projections along the thickness direction) at least partially overlap, the extension parts 232 are respectively located in the two ends of the accommodating space 21a formed by the clamping piece 21 along the length direction, and the assembly and positioning of the flexible circuit board 23, the clamping piece 21 and the first suction member 22 can be better achieved, and the positioning accuracy is improved.

[0219] For example, the projections of the two ends of the first main body part 211, the two extension parts 232 and the two ends of the first suction member 22 along the length direction can be as large as possible, such as close to overlap, which can further improve the assembly and positioning accuracy of the flexible circuit board 23, the clamping piece 21 and the first suction member 22.

[0220] In some embodiments, a first positioning hole 2111 can be respectively formed on the two ends of the first main body part 211 along the length direction, and the first positioning hole 2111 can penetrate the first main body part 211 along the thickness direction. A second positioning hole 2321 can be respectively formed on the two extension parts 232, and the second positioning hole 2321 can also penetrate the extension part 232 along the thickness direction. A third positioning hole 222 can be respectively formed on the two ends of the first suction member 22 along the length direction, and the third positioning hole 222 can also penetrate the first suction member 22 along the thickness direction.

[0221] The center lines of the first positioning hole 2111, the second positioning hole 2321 and the third positioning hole 222 can coincide along the thickness direction, and the first positioning hole 2111, the second positioning hole 2321 and the third positioning hole 222 can be used for auxiliary positioning of the first main body part 211, the clamping piece 21 and the flexible circuit board 23 during assembly, so as to further improve the positioning accuracy.

[0222] For example, when assembling the clamping piece 21, the flexible circuit board 23 and the first suction member 22, the first suction member 22, the partial flexible circuit board 23 and the clamping piece 21 are sequentially stacked, and a positioning rod can be used to sequentially penetrate the first positioning hole 2111, the second positioning hole 2321 and the third positioning hole 222 along the thickness direction. The positioning rod can coincide with the center lines of the first positioning hole 2111, the second positioning hole 2321 and the third positioning hole 222, so that the clamping piece 21, the flexible circuit board 23 and the first suction member 22 are accurately positioned and assembled.

[0223] Exemplarily, the hole diameter of the first positioning hole 2111 and the hole diameter of the third positioning hole 222 can be equal, and the hole diameter of the second positioning hole 2321 can be greater than the hole diameter of the first positioning hole 2111 and the hole diameter of the third positioning hole 222 respectively. By making the hole diameter of the second positioning hole 2321 on the flexible circuit board 23 relatively large, the impact or contact of the positioning rod on the circuit structure on the flexible circuit board 23 during assembly, such as assisted positioning by the positioning rod, can be reduced or avoided, and the electrical connection performance of the flexible circuit board 23 is ensured.

[0224] Figure 18 For Figure 16 Structure diagram of the middle clamping piece.

[0225] Referring to Figure 18 As shown, the clamping piece 21 also has a notch structure 214, which can be located on one side of the clamping piece 21, such as the notch structure 214 can be located on one side of the first main body part 211 along the penetrating direction.

[0226] Figure 19 For Figure 16 Enlarged structure diagram of the local structure of the flexible circuit board assembly at one end of the clamping piece.

[0227] Referring to Figure 19 As shown, the first suction member 22 has a first abutting surface 221 on one side along the penetrating direction (x direction), the first suction member 22 is located in the accommodation space 21a of the clamping piece 21, and the first abutting surface 221 of the first suction member 22 can be exposed through the notch structure 214 on the clamping piece 21, such as the first abutting surface 221 can be exposed through the notch structure 214 in the penetrating direction.

[0228] Figure 20 For Figure 9 Another cross-sectional structure diagram of the shaft assembly.

[0229] Combined Figure 20 As shown, the first boss 113 can be located in the through hole 11 of the shaft 10 along the penetrating direction. After the flexible circuit board assembly and the shaft 10 are assembled to form the shaft assembly 101, the first boss 113 can at least partially extend into the notch structure 214 (not marked in the figure) of the clamping piece 21, and the first abutting surface 221 of the first suction member 22 can abut against the first boss 113, which can limit the displacement of the flexible circuit board 23 along the penetrating direction.

[0230] During assembly of the flexible circuit board assembly and the shaft 10, the penetrating direction of the flexible circuit board 23 on the shaft 10 or the insertion direction of the clamping piece 21 on the shaft 10 can be the direction from the first abutting surface 221 to the first boss 113, for example, the penetrating direction can be the x direction to the right in the figure.

[0231] Thus, when the flexible circuit board 23 is pulled along the penetrating direction, such as pulled to the right along the x direction in the figure, to assemble the flexible circuit board assembly with the rotating shaft 10, the abutment of the first abutment surface 221 and the first boss 113 can limit the continuous movement of the flexible circuit board assembly 20 to the right along the penetrating direction, so as to realize the accurate positioning of the clamping piece 21 and the first suction member 22 on the rotating shaft 10, and avoid the damage caused by excessive pulling of the flexible circuit board 23. For example, when the first boss 113 abuts against the first abutment surface 221 during the pulling of the flexible circuit board 23, it can be ensured that the first clamping part 212 is clamped with the second clamping part 111, and the first suction member 22 is connected with the second suction member 12, thereby avoiding the problems such as excessive pulling of the flexible circuit board 23 or improper assembly.

[0232] For example, the notch structure 214 on the clamping piece 21 can be at least two (see Figure 18 The number of the first bosses can correspond to the number of the notch structures 214. The at least two notch structures 214 can be distributed on both ends of the clamping piece 21 along the length direction (y direction), which can improve the consistency and strength of the limiting of the movement of the flexible circuit board 23 along the penetrating direction during the assembly process, and further facilitate the accurate positioning and installation.

[0233] Figure 21 It is a partial structure enlarged schematic view of the cross section of the rotating shaft assembly in the 20.

[0234] As shown in Figure 21 The first main body part 211 has a limiting part 213 on one side along the penetrating direction, such as the limiting part 213a (and the limiting part 213d, see Figure 18 The notch structure 214 can be located between the limiting part 213a and the first clamping part 212, which is convenient for forming and implementation. For example, when the limiting part 213a is formed by bending the epitaxial part on the first main body part 211, a gap can be formed between the epitaxial part and the first clamping part 212 of the end part, so that the notch structure 214 can be formed between the limiting part 213a and the first clamping part 212 after the limiting part 213a is formed. The forming method is simple and convenient to implement, and is conducive to reducing the cost.

[0235] In addition, the abutment of the first abutment surface 221 of the first suction member 22 and the first boss 113 can reduce the impact on the clamping piece 21 during the assembly of the flexible circuit board assembly 20, and the width (along the penetrating direction) of the first adhesive layer 24 located between the clamping piece 21 and the flexible circuit board 23 is relatively narrow, which can ensure the bonding firmness of the clamping piece 21 and the flexible circuit.

[0236] For example, as Figure 15As shown, the width of the first adhesive layer 24 between the clamping member 21 and the flexible circuit board 23 can be less than the width of the second adhesive layer 25 between the first suction member 22 and the flexible circuit board 23.

[0237] For example, for a foldable device with an out-of-screen fold, the flexible screen is located on the outer surface side of the hinge assembly, where the outer surface of the hinge assembly is on the same side as the outer surface of the hinge shaft (e.g. Figure 15 the outer surface of the hinge shaft 10), and the inner surface of the hinge assembly is on the same side as the inner surface of the hinge shaft (e.g. Figure 15 the inner surface of the hinge shaft 10). In the structure in which the first body part 211 of the clamping member 21, the partial flexible circuit board 23, and the second suction member 12 are stacked in sequence, the clamping member 21 is closer to the inner surface of the hinge shaft 10, and the second suction member 12 is closer to the outer surface of the hinge shaft 10, i.e. in the thickness direction (e.g. Figure 15 the z direction in the figure), the flexible screen is located on the side of the second suction member 12 away from the clamping member 21.

[0238] The first surface 23a of the flexible circuit board 23 is closer to the inner surface of the hinge shaft 10, and the second surface 23b of the flexible circuit board 23 is closer to the outer surface of the hinge shaft 10. When the first middle frame 102a and the second middle frame 102b are rotated (see also Figure 15 the figure), the rotation of the two middle frames will cause the flexible circuit board 23 to bend, so that when the electronic device is in the folded state, the part of the first surface 23a of the flexible circuit board 23 located in the first middle frame 102a is opposite to the part located in the second middle frame 102b, and the part of the second surface 23b of the flexible circuit board 23 located in the first middle frame 102a is opposite to the part located in the second middle frame 102b.

[0239] By making the width of the first adhesive layer 24 between the clamping member 21 and the first surface 23a less than the width of the second adhesive layer 25 between the first suction member 22 and the second surface 23b, the width of the first adhesive layer 24 is relatively narrow, the first adhesive layer 24 has less constraint on the width direction of the first surface 23a, which can reduce or avoid the influence of the first adhesive layer 24 on the bending of the flexible circuit board 23, so that the flexible circuit board 23 can be bent better.

[0240] Figure 22 Another enlarged schematic view of the cross-sectional local structure of the hinge assembly provided by the embodiments of the present application.

[0241] In other embodiments, the limiting part 213 can also abut against the first boss. For example, see Figure 22As shown, the first main body 211 has a limiting portion 213, such as a limiting portion 213a, on one side along the insertion direction. The side of the limiting portion 213a facing away from the receiving space can form a second abutment surface 2131. The through hole of the rotating shaft 10 can also have a second boss 114, located on one side of the through hole along the insertion direction. The second abutment surface 2131 on the limiting portion 213 abuts against the second boss 114, thereby limiting the displacement of the flexible circuit board 23 along the insertion direction.

[0242] Accordingly, when assembling the flexible circuit board assembly 20 and the rotating shaft 10, the insertion direction of the flexible circuit board 23 can also be from the second abutting surface 2131 to the second protrusion 114. When the flexible circuit board 23 is pulled along the insertion direction to achieve assembly, the abutment between the second abutting surface 2131 and the second protrusion 114 can also limit the flexible circuit board assembly 20 from further positioning relative to the rotating shaft 10, thereby preventing damage to the flexible circuit board 23 caused by excessive pulling.

[0243] For example, the number of the second boss 114 and the limiting portion 213 abutting against the second boss 114 can also be at least two, such as the limiting portions 213 located on one side of the first main body 211 along the penetration direction and located at opposite ends of the first main body 211 along the length direction (see FIG. Figure 20 The limiting portion 213a and the limiting portion 213d) are respectively in contact with the first boss 113, which can further enhance the limiting strength of the flexible circuit board 23 and ensure accurate positioning and installation.

[0244] It should be noted that, in some other examples, a notch structure may be formed on one end of the clip along the length direction (see Figure 19 The notch structure 214 in the first adsorption member is exposed to expose the first abutment surface of the first adsorption member at the end, and the limiting portion on the other end of the clamping member along the length direction (as shown in FIG. Figure 22 The limiting portion 213a in the through hole of the rotating shaft may have a second abutment surface. A first boss and a second boss may be provided in the through hole of the rotating shaft, respectively. The first boss and the second boss may be spaced apart along the length. The first abutment surface exposed through the notch structure at one end of the clamping member may abut against the first boss, while the second abutment surface of the limiting portion at the other end of the clamping member may abut against the second boss. This also limits the movement of the flexible circuit board assembly along the insertion direction, achieving precise positioning and installation.

[0245] In the description of the embodiments of the present application, it should be noted that unless specifically defined and limited otherwise, the terms "mount", "connect", "connection" should be understood broadly, for example, can be fixed connection, can also be indirectly connected through the intermediate medium, can be the internal communication of two elements or the interaction relationship of two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances. The terms "first", "second", "third", "fourth" and the like (if any) are used to distinguish similar objects, and do not necessarily describe a specific order or sequence.

[0246] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the embodiments of the present application have been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A flexible circuit board assembly for use with a hinge of a foldable electronic device, characterized in that: include: a flexible circuit board, the flexible circuit board being configured to pass through the through hole of the rotating shaft and be installed on the rotating shaft, wherein the installation direction of the flexible circuit board intersects with the thickness direction and the length direction of the rotating shaft respectively; a first adsorption member, the first adsorption member being disposed on the flexible circuit board, and having an end of the first adsorption member facing away from the flexible circuit board along the thickness direction of the rotating shaft configured to be adsorbed and connected to the second adsorption member within the rotating shaft; A clamping piece is provided on the flexible circuit board, and is used for being inserted into the through hole along the penetration direction and being engaged with the rotating shaft.

2. The flexible circuit board assembly of claim 1, wherein, The flexible circuit board includes a first surface and a second surface opposite to each other in the thickness direction; At least part of the clip and the first adsorption part are respectively located on the first surface and the second surface, at least part of the clip, part of the flexible circuit board and the first adsorption part are stacked in sequence in the thickness direction, and the end of the first adsorption part facing away from the flexible circuit board is used to abut against the second adsorption part, and at least part of the end of the clip facing away from the flexible circuit board is used to abut against the inner wall of the through hole opposite to the second adsorption part in the thickness direction.

3. The flexible circuit board assembly of claim 2, wherein, The clamping member includes a first main body and at least two limiting parts, and the first main body is fixed on the first surface; At least two of the limiting parts are respectively located on two opposite sides of the first main body along the penetration direction, and the limiting part protrusion is arranged on a surface of the first main body facing the first adsorption part. The limiting part and the first main body form a accommodating space, and the first adsorption part is located in the accommodating space.

4. The flexible circuit board assembly of claim 3, wherein, At least two of the limiting portions are respectively distributed at two opposite ends of the first main body along the length direction; There is an avoidance gap between the limiting parts distributed at two opposite ends of the clamping component along the length direction, and part of the flexible circuit board is located in the avoidance gap.

5. The flexible circuit board assembly of claim 3 or 4, wherein, The clamping member further includes a first clamping portion; The first clamping parts are respectively provided on two opposite ends of the first main body along the length direction, and the first clamping parts are used to be clamped and matched with the second clamping parts in the through hole.

6. The flexible circuit board assembly of claim 5, wherein, The first clamping protrusion is provided on a surface of the first main body portion facing the first adsorption component, and the first clamping portion, the limiting portion and the first main body portion together form the accommodating space.

7. The flexible circuit board assembly of claim 5 or 6, wherein, The first clamping portion and the second clamping portion are clamped together by an elastic protrusion and a groove.

8. The flexible circuit board assembly of claim 7, wherein, The first clamping portion includes a connecting arm and a clamping arm, and the connecting arm is connected to the first main body; The clamping arm has the connecting arms on both sides along the penetration direction, the two ends of the clamping arm are respectively connected to the connecting arms, and the middle part of the clamping arm protrudes away from the accommodating space to form the elastic protrusion.

9. The flexible circuit board assembly of any of claims 5-8, wherein, The first adsorption member has a first abutting surface on one side along the penetration direction; The clamping member further comprises a notch structure on one side of the first body portion along the threading direction, the first abutting surface is exposed through the notch structure, and the notch structure is used for accommodating a first boss in part of the through hole, and the first abutting surface is used for abutting and matching with the first boss.

10. The flexible circuit board assembly of claim 9, wherein, The first clamping portion and the limiting portion on one side of the first body portion along the threading direction have the notch structure.

11. The flexible circuit board assembly of any of claims 3-10, wherein, A second abutting surface is formed on a side of the limiting portion on one side of the first body portion along the threading direction and away from the accommodation space, and the second abutting surface is used for abutting and matching with the first boss in the through hole.

12. The flexible circuit board assembly of claim 9 or 10, wherein, The clamping member and the flexible circuit board are fixed through a first adhesive layer between the first body portion and the first surface. The flexible circuit board further comprises a second adhesive layer between the flexible circuit board and the first suction member, and the first suction member and the flexible circuit board are fixed through the second adhesive layer. The width of the first adhesive layer along the threading direction is smaller than the width of the second adhesive layer along the threading direction.

13. The flexible circuit board assembly of any of claims 3-12, wherein, The flexible circuit board comprises a second body portion and extension portions on both sides of the second body portion along the length direction, and the extension portions and part of the second body portion are located in the accommodation space.

14. The flexible circuit board assembly of claim 13, wherein, First positioning holes are respectively arranged on both ends of the first body portion along the length direction, second positioning holes are respectively arranged on the extension portions, and third positioning holes are respectively arranged on both ends of the first suction member along the length direction, and the center lines of the first positioning holes, the second positioning holes and the third positioning holes coincide in the thickness direction.

15. The flexible circuit board assembly of claim 14, wherein, The diameters of the first positioning holes and the third positioning holes are equal, and the diameters of the second positioning holes are respectively greater than the diameters of the first positioning holes and the second positioning holes.

16. A hinge assembly, comprising: The flexible circuit board assembly comprises a rotating shaft and the flexible circuit board assembly of any one of claims 1-15, the rotating shaft has a through hole, and a second suction member is arranged in the rotating shaft. The flexible circuit board is threaded on the rotating shaft through the through hole, one end of the first suction member away from the flexible circuit board along the thickness direction of the rotating shaft is adsorptively connected with the second suction member, the clamping member is inserted into the through hole along the threading direction of the flexible circuit board and is clamped and matched with the rotating shaft.

17. The hinge assembly of claim 16, wherein, The second suction member is arranged on an inner wall on one side of the through hole along the thickness direction. At least part of the second suction member, the first suction member, part of the flexible circuit board and the clamping member are sequentially stacked in the thickness direction, and one end of at least part of the clamping member away from the flexible circuit board abuts against an inner wall of the through hole opposite to the second suction member in the thickness direction.

18. The hinge assembly of claim 17, wherein, Second clamping portions are respectively arranged on two opposite inner side walls of the through hole along the length direction, and the second clamping portions and the first clamping portion of the clamping member are clamped and matched through elastic protrusions and grooves.

19. A hinge assembly according to any one of claims 16 to 18, wherein, An installation groove is arranged on an inner wall of the through hole, and the second suction member is arranged in the installation groove.

20. The hinge assembly of any of claims 16-19, wherein, The through hole has a first protrusion inside, and the first protrusion is located on one side of the through hole along the penetrating direction; The first protrusion partially extends into a notch structure on the clamping piece, and the first protrusion is in abutting cooperation with a first abutting surface on the first suction member.

21. A hinge assembly according to any one of claims 16 to 20, wherein, The through hole has a second protrusion inside, and the second protrusion is located on one side of the through hole along the penetrating direction; The second protrusion is in abutting cooperation with a second abutting surface on a limiting part of the clamping piece.

22. A foldable electronic device, characterized by At least two middle frames and the pivot assembly of any one of claims 16-21, the two middle frames are respectively located on two sides of the pivot assembly, and the two middle frames are rotationally connected through the pivot assembly.

23. The foldable electronic device of claim 22, wherein, Further comprising a flexible screen, the flexible screen is arranged on the pivot assembly and the middle frame; The flexible screen is at least located on the outer surfaces of the middle frame and the pivot assembly, when the electronic device is in a folded state, the outer surfaces of the two middle frames are opposite, and the outer surface of the pivot assembly is located on the same side of the electronic device as the outer surfaces of the middle frames.

24. The foldable electronic device of claim 23, wherein, In the thickness direction, the flexible screen is located on the side of the second suction member away from the clamping piece.

Images