Rotating shaft device and folding screen device

Abstract

Embodiments of the present application provide a hinge device and a folding screen device. The hinge device is used in the folding screen device. The hinge device comprises at least a hinge assembly, a shaft cover and a connecting piece. The hinge assembly comprises a hinge base. The shaft cover and the hinge base are stacked along a thickness direction of the shaft cover. The shaft cover comprises an inclined connecting hole. An axis of the connecting hole is arranged to intersect the thickness direction. The connecting piece connects the hinge base and the shaft cover. The connecting piece comprises an inclined connecting column and a connecting plate. The connecting column is connected to the connecting plate. The connecting column is connected to the connecting hole. The connecting plate is overlapped on a surface of the hinge base away from the shaft cover. The hinge device can facilitate the thin design of the hinge device.

Description

Technical Field

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

[0002] With the explosive growth of electronic devices, their functionality is increasing. The displays of electronic devices are used to present visual information to users. In some scenarios, users desire a larger display area. Currently, electronic devices typically have single-screen displays. A larger display area means larger electronic devices, which reduces their portability.

[0003] In order to balance the size and display area of ​​electronic devices, electronic devices can adopt a foldable structure. For example, the two shells can rotate relative to each other around a hinge device to expand or fold. A flexible display screen is covered on the two shells. When the two shells are unfolded to the same plane, the flexible display screen is in an unfolded state and has a larger display area. When the two shells are folded together, the flexible display screen is in a folded state, and the electronic device has a smaller volume. The hinge device includes a shaft cover, a shaft base, and a rotating member. The rotating member is used to connect to structures such as the middle frame. The shaft base is connected to the shaft cover. In the thickness direction of the shaft cover, the shaft base and the shaft cover are stacked on each other. The shaft base cooperates with the rotating member to constrain the rotation trajectory of the rotating member, and the shaft base can also support the rotating member. However, in the thickness direction, the thickness of the hinge device is relatively large at the location where the connecting member is provided, which affects the lightweight and thin design of the hinge device. Summary of the Invention

[0004] The embodiments of the present application provide a hinge device and a folding screen device, which can facilitate the lightweight and thin design of the hinge device.

[0005] In a first aspect, the present application provides a hinge device for a foldable screen device. The hinge device includes at least a hinge assembly, a hinge cover, and a connector.

[0006] The shaft assembly includes a shaft base. The shaft cover and the shaft base are stacked along the thickness direction of the shaft cover. The shaft cover includes an inclined connection hole. The axis of the connection hole intersects the thickness direction. A connector connects the shaft base and the shaft cover. The connector includes an inclined connection post and a connection plate. The connection post is connected to the connection plate. The connection post is connected to the connection hole. The connection plate overlaps the surface of the shaft base facing away from the shaft cover.

[0007] In the rotating shaft device of the embodiment of the present application, a detachable connection between the rotating shaft base and the shaft cover can be achieved through a connecting piece, which facilitates the maintenance of the rotating shaft base and the shaft cover. The connecting hole of the shaft cover and the connecting piece are both arranged at an angle relative to the thickness direction, so that the thickness of the area corresponding to the connecting plate of the connecting piece on the rotating shaft device varies. When the structural dimensions of the connecting piece are the same, in the arrangement of the connecting hole and the connecting piece along the thickness direction in the related art, the thickness of the area corresponding to the connecting plate on the rotating shaft device is the first thickness, while the maximum thickness of the area corresponding to the connecting plate on the rotating shaft device of the embodiment of the present application is the second thickness. Among them, since the connecting piece and the connecting hole of the present application are arranged at an angle, the second thickness can be less than the first thickness, which can be beneficial to reducing the space occupied in the thickness direction, and further beneficial to the lightweight design of the rotating shaft device.

[0008] In a possible implementation manner, along the width direction of the shaft cover, the connection hole is located on the outside of the rotating shaft base.

[0009] In a possible implementation manner, the connecting hole and the connecting member are respectively provided on both sides of the rotating shaft base along the width direction.

[0010] When the rotating member rotates relative to the shaft base, the rotating member exerts a force on the shaft base. By applying a compressive force to the shaft base through the connecting members on both sides of the rotating member, the rotating member can effectively ensure that the force on the shaft base is balanced and effectively disperse the force exerted by the rotating member on the shaft base, thereby improving the positional stability of the shaft base and reducing the possibility of the shaft base loosening relative to the connecting members or the shaft base relative to the shaft cover.

[0011] In a possible implementation manner, a portion of the connecting plate overlaps the surface of the rotating shaft base facing away from the shaft cover, and a gap is formed between the other portion of the connecting plate and the shaft cover.

[0012] If both the rotating shaft base and the shaft cover are in contact with the connecting plate, there is a possibility that the shaft cover contacts the connecting plate and causes the connecting plate to be over-positioned. If the contact surface between the shaft cover and the connecting plate is higher than the contact surface between the rotating shaft base and the connecting plate, it will cause poor contact between the rotating shaft base and the connecting plate or no contact, resulting in the connecting plate being unable to press the rotating shaft base, and the rotating shaft base is prone to loosening. In the embodiment of the present application, after the connecting member is connected to the connecting hole of the shaft cover, the connecting plate of the connecting member only presses against the surface of the rotating shaft base facing away from the shaft cover, and does not contact the surface of the shaft cover. This method is conducive to reducing the possibility of the above-mentioned problem, ensuring that the connecting plate effectively presses against the rotating shaft base, and ensuring that the connection of the rotating shaft base is stable and reliable and not prone to loosening.

[0013] In a possible implementation manner, around the axis of the connecting column, an angle range corresponding to the overlapping area between the connecting plate and the rotating shaft base is greater than or equal to 180°.

[0014] 1 / 2 area or an area greater than 1 / 2 of the connecting plate can overlap with the shaft base, while a gap is formed between the remaining part and the shaft cover, reducing the possibility of deviation in the stability and reliability of the connection state between the connecting plate and the shaft base due to the small overlapping area between the connecting plate and the shaft base.

[0015] In one possible embodiment, the connecting plate includes an outer end surface. The outer end surface faces away from the shaft cover. Along the width direction of the shaft cover, the highest point of the outer end surface is away from the edge of the shaft cover, and the lowest point of the outer end surface is close to the edge of the shaft cover.

[0016] In a possible embodiment, the connecting plate further includes an inner end surface, the inner end surface is disposed facing the shaft cover, and the inner end surface overlaps the rotating shaft base.

[0017] In one possible embodiment, the shaft cover further includes a relief notch. The relief notch is disposed facing the connecting hole along the width of the shaft cover. At least a portion of the connector is located within the relief notch, thereby increasing the overlap between the connector and the shaft cover in the width direction of the shaft cover. This helps reduce the space occupied by the connector in the width direction and, consequently, the width of the shaft cover. Furthermore, in the thickness direction, the connector can fully utilize the space in the relief notch, effectively reducing the combined thickness of the connector and the shaft cover, thereby further reducing the thickness of the rotating shaft device in the thickness direction.

[0018] In one possible embodiment, the rotating shaft base includes an avoidance recess. Along the width direction of the shaft cover, the avoidance notch is arranged facing the avoidance recess. The avoidance recess is arranged facing the connecting hole, and a portion of the connecting member is located in the avoidance recess, thereby increasing the overlapping area between the connecting member and the rotating shaft base in the width direction of the shaft cover, which is beneficial to reducing the space occupied by the connecting member in the width direction and the width of the rotating shaft base. At the same time, in the thickness direction, the connecting member can make full use of the space of the avoidance recess to effectively reduce the thickness of the connecting member and the rotating shaft base after superposition, thereby further reducing the thickness of the rotating shaft device in the thickness direction.

[0019] In one possible embodiment, the shaft cover includes a receiving portion. Along the width of the shaft cover, the shaft cover includes two inclined inner walls. The inclined inner walls are disposed facing the receiving portion. In a direction away from the shaft base, the two inclined inner walls approach each other. The shaft base includes a mating portion. The mating portion is located within the receiving portion. The shape of the mating portion matches the shape of the receiving portion.

[0020] In a possible implementation, the hinge base comprises a folding portion. The fitting portion is connected to the folding portion. The folding portion is located outside the accommodating portion and overlaps the shaft cover. The connecting member abuts against a surface of the folding portion which is away from the shaft cover.

[0021] In a possible implementation, a gap is formed between the fitting portion and the inclined inner wall.

[0022] In a possible implementation, along the thickness direction, the projection of the connecting member is located in the projection of the shaft cover, so that the maximum width of the connecting member and the shaft cover in the width direction is limited by the width of the shaft cover itself, which is beneficial to reduce the space occupied by the connecting member and the shaft cover in the width direction.

[0023] In a possible implementation, the connecting hole is a blind hole.

[0024] In a possible implementation, the connecting column and the connecting hole are in threaded connection.

[0025] Since the connecting column and the connecting hole are both provided with threads, the pressing force applied by the connecting plate to the hinge base can be controlled by adjusting the number of threads engaged by the connecting column and the connecting hole, which is beneficial to accurately control the pressing force applied by the connecting plate to the hinge base.

[0026] In a possible implementation, the angle between the axis of the connecting hole and the thickness direction ranges from 15° to 55°.

[0027] The second aspect of the present application provides a folding screen device, which comprises the hinge device of the above-mentioned embodiments. The hinge device at least comprises a hinge assembly, a shaft cover and a connecting member.

[0028] The hinge assembly comprises a hinge base. Along the thickness direction of the shaft cover, the shaft cover and the hinge base are stacked. The shaft cover comprises an inclined connecting hole. The axis of the connecting hole intersects with the thickness direction. The connecting member connects the hinge base and the shaft cover. The connecting member comprises an inclined connecting column and a connecting plate. The connecting column is connected to the connecting plate. The connecting column is connected to the connecting hole. The connecting plate overlaps a surface of the hinge base which is away from the shaft cover. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 A structural schematic diagram of a folding screen device in an unfolded state is provided for an embodiment of the present application;

[0030] Figure 2 A structural schematic diagram of a folding screen device in a half-folded state is provided for an embodiment of the present application;

[0031] Figure 3 A schematic diagram of the structure of a folding screen device in a folded state provided by an embodiment of the present application;

[0032] Figure 4 A schematic diagram of a partially exploded structure of a foldable screen device provided in one embodiment of the present application;

[0033] Figure 5 A schematic diagram of a partial structure of a rotating shaft device provided in one embodiment of the present application;

[0034] Figure 6 for Figure 5 The enlarged schematic diagram of M in the middle;

[0035] Figure 7 A schematic diagram of a partial cross-sectional structure of a rotating shaft device provided in one embodiment of the present application;

[0036] Figure 8 for Figure 7 The enlarged schematic diagram at W in the middle;

[0037] Figure 9 A schematic diagram of a partial cross-sectional structure of a rotating shaft device provided in another embodiment of the present application;

[0038] Figure 10 A schematic diagram of a partial cross-sectional structure of a rotating shaft device provided in another embodiment of the present application;

[0039] Figure 11 This is a schematic diagram of a partial cross-sectional structure of a rotating shaft device provided in another embodiment of the present application.

[0040] Reference numerals:

[0041] 10. Folding screen devices;

[0042] 20. Housing;

[0043] 30. Rotating shaft device;

[0044] 31, shaft cover; 31a, connecting hole; 31b, accommodating portion; 31c, guide groove; 31d, engaging groove; 310, groove; 311, bottom wall; 312, side wall; 312a, avoidance notch; 312b, inclined inner wall;

[0045] 32, shaft base; 32a, transverse portion; 32b, overlapping portion; 321, avoidance recess; 322, matching portion; 323, folding portion;

[0046] 33. Rotating parts;

[0047] 34. Connecting member; 341. Connecting column; 342. Connecting plate; 342a. Outer end surface; 342b. Inner end surface; 343. Engaging protrusion;

[0048] 40. Frame;

[0049] 50. Flexible display screen;

[0050] 51. First display area;

[0051] 52. Second display area;

[0052] 53. The third display area;

[0053] 60. Electronic devices;

[0054] 70. Printed circuit boards;

[0055] 100, gap;

[0056] 200, locking mating surface;

[0057] X, length direction; Y, width direction; Z, thickness direction. DETAILED DESCRIPTION

[0058] The electronic device in the embodiments of the present application can be referred to as user equipment (UE) or terminal, etc. For example, the electronic device can be a tablet computer (portable Android device, PAD), a personal digital assistant (PDA), a handheld device with wireless communication function, a computing device, a vehicle-mounted device, a wearable device, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal in industrial control (industrial control), a wireless terminal in self-driving (self-driving), a wireless terminal in remote medical (remote medical), a wireless terminal in smart grid (smartgrid), a wireless terminal in transportation safety (transportation safety), a wireless terminal in smart city (smart city), a wireless terminal in smart home (smart home), and other mobile terminals or fixed terminals. In the embodiments of the present application, the form of the terminal device is not specifically limited.

[0059] In this application, the electronic device is described as a foldable screen device. The foldable screen device can be a handheld device with wireless communication capabilities. The handheld device with wireless communication capabilities can be, for example, a foldable mobile phone, a foldable tablet computer, or a foldable laptop computer including a foldable flexible display screen.

[0060] Figure 1The structure of the unfolded state of the folding screen device 10 of an embodiment is shown schematically. Figure 2 The structure of the half-folded state of the folding screen device 10 is shown schematically. Figure 3 The structure of the folded state of the folding screen device 10 is shown schematically. Referring to Figures 1 to 3 As shown, the folding screen device 10 includes a housing 20 and a flexible display screen 50. The housing 20 includes a hinge device 30 and a frame 40. The frame 40 is connected to the hinge device 30. The hinge device 30 can be provided with the frame 40 on opposite sides respectively. The flexible display screen 50 is connected to the frame 40.

[0061] The frame 40 can rotate and fold relative to the hinge device 30. In the present application, the folding screen device 10 is taken as an example to be described with two frames 40. When the two frames 40 are stacked on each other, the folding screen device 10 is in the folded state. When the two frames 40 are away from each other from the stacked state and unfolded to the same plane, the folding screen device 10 is in the unfolded state. The process from the folded state to the unfolded state of the frame 40 is the unfolding process, and the process from the unfolded state to the folded state is the folding process.

[0062] The frame 40 can include a middle frame. The frame 40 can be connected to the hinge device 30 through the middle frame.

[0063] Figure 4 The local structure of the folding screen device 10 of the present application is shown schematically. Referring to Figure 4 As shown, the flexible display screen 50 includes a display part for displaying image information. The flexible display screen 50 itself has a bendable performance and can be folded after being subjected to external force. When the folding screen device 10 is in the unfolded state, the display part of the flexible display screen 50 is unfolded to facilitate the presentation of image information to the user. The display part can include a first display area 51, a second display area 52 and a third display area 53. The first display area 51 and the second display area 52 are provided respectively corresponding to the two frames 40. The third display area 53 can be provided corresponding to the hinge device 30.

[0064] When the two frames 40 are in the folded state, the display part is in the bent state. The first display area 51 and the second display area 52 of the display part can be stacked on each other, while the third display area 53 can be bent into an arc shape, for example, the third display area 53 can be bent into a water drop shape.

[0065] When the two frames 40 are in the unfolded state, the display part is in the unfolded state. The first display area 51, the second display area 52 and the third display area 53 are in a flat state. The folding screen device 10 can change its overall size by folding or unfolding, and at the same time, it can also have a large display area in the unfolded state.

[0066] The frame 40 of the folding screen device 10 can be provided with electronic devices 60. For example, the electronic devices 60 can include, but are not limited to, a processor, a memory, or a camera module. In some examples, a printed circuit board 70 (PCB) can be arranged in the frame 40. The electronic devices 60 are arranged on the printed circuit board 70.

[0067] Figure 5 The partial structure of the hinge device 30 of the present application is schematically shown. Referring to FIG. 1B, Figure 5 As shown, the hinge device 30 includes a shaft cover 31. The shaft cover 31 is a mounting base in the hinge device 30, and can provide a mounting base for other structural components. The shaft cover 31 belongs to the appearance component of the folding screen device 10. The shaft cover 31 can shield other structural components on the hinge device 30, so that the electronic device has a neat and beautiful appearance. The shaft cover 31 can be located between the two frames 40. When the two frames 40 rotate relative to the hinge device 30, the position of the shaft cover 31 can remain relatively fixed. In some examples, when the two frames 40 are in an unfolded state, the two frames 40 can shield the shaft cover 31 so that the shaft cover 31 is in an invisible state. When the two frames 40 are in a folded state, at least part of the shaft cover 31 can be exposed to the two frames 40 and be in a visible state. The shaft cover 31 can provide a mounting base for related structural components in the hinge device 30. In some examples, the shaft cover 31 can have a strip-shaped structure.

[0068] The hinge device 30 further includes a hinge base 32 and a rotating component 33. The hinge base 32 is connected to the shaft cover 31. In the thickness direction Z of the shaft cover 31, the hinge base 32 and the shaft cover 31 are arranged in a stacked manner, for example, the hinge base 32 is arranged on the side of the shaft cover 31 facing the flexible display screen 50. The hinge base 32 can cooperate with the rotating component 33 to constrain the rotation track of the rotating component 33, and the hinge base 32 can support the rotating component 33. The rotating component 33 can be connected to the frame 40. When the frame 40 rotates, the rotating component 33 can rotate synchronously with the frame 40. The thickness direction Z of the shaft cover 31 can refer to the direction in which the shaft cover 31 and the hinge base 32 are stacked.

[0069] In the related art, since the connection method between the shaft cover 31 and the rotating shaft base 32 needs to take the factor of rework into consideration, the shaft cover 31 and the rotating shaft base 32 cannot be fixed by gluing or welding. The rotating shaft base 32 and the shaft cover 31 need to be detachably connected by a connecting piece. Along the thickness direction Z, a connecting hole is provided on the shaft cover 31, and an avoidance hole is provided on the rotating shaft base 32. The axial direction of the connecting hole and the axial direction of the avoidance hole are both the same as the thickness direction Z, that is, the axis of the connecting hole and the axis of the avoidance hole each form an angle of 0° with the thickness direction Z. A part of the connecting piece passes through the avoidance hole and extends into the connecting hole, and is connected to the shaft cover 31. The other part of the connecting piece presses against the surface of the rotating shaft base 32 facing away from the shaft cover 31 and covers the avoidance hole. The area where the connecting piece contacts the rotating shaft base 32 forms an annular contact surface around the avoidance hole. At this time, along the thickness direction Z, the sum of the thicknesses of the portion of the connecting member located on the side of the shaft base 32 facing away from the shaft cover 31, the portion of the shaft base 32 located between the connecting member and the shaft cover 31, and the portion of the shaft cover 31 corresponding to the connecting hole is relatively large. Therefore, in the thickness direction Z, the thickness of the shaft device 30 at the location where the connecting member is set is relatively large, which occupies a larger space and affects the lightweight design of the shaft device 30.

[0070] In the folding screen device 10 provided in the embodiment of the present application, the shaft cover 31 and the shaft base 32 of the hinge device 30 are detachably connected through an inclined connecting piece, so that the connection method of the shaft cover 31, the shaft base 32 and the connecting piece is conducive to reducing the corresponding thickness at the connecting piece, thereby facilitating the lightweight design of the hinge device 30.

[0071] The implementation of the rotating shaft device 30 provided in the embodiment of the present application is described below.

[0072] Figure 6 for Figure 5 Enlarged view of M in the middle. Figure 5 and Figure 6 As shown, the shaft device 30 of the embodiment of the present application includes a shaft assembly, a shaft cover 31 and a connecting member 34 .

[0073] The shaft assembly includes a shaft base 32 and a rotating member 33. The shaft base 32 is connected to the shaft cover 31. The rotating member 33 can rotate relative to the shaft base 32 and the shaft cover 31. Rotating members 33 are provided on both sides of the shaft base 32 along the width direction Y of the shaft cover 31. The rotating members 33 on both sides can be connected to the frame 40.

[0074] Figure 7 The partial cross-sectional structure of the rotating shaft device 30 of the present application is schematically shown. Figure 7As shown, the shaft cover 31 and the shaft base 32 are arranged in a stacked manner along the thickness direction Z of the shaft cover 31. The shaft cover 31 can be located on the side of the shaft base 32 away from the flexible display screen 50. The shaft cover 31 includes a connection hole 31a arranged obliquely. The axis S of the connection hole 31a is arranged to intersect the thickness direction Z, that is, the axis S of the connection hole 31a is not the same as the thickness direction Z, and the two have an included angle.

[0075] The connecting piece 34 connects the shaft base 32 and the shaft cover 31. The shaft base 32 and the shaft cover 31 are detachably connected through the connecting piece 34, so that when repair is needed, the connecting piece 34 can be removed to separate the shaft base 32 and the shaft cover 31 for repair. The connecting piece 34 includes a connection column 341 arranged obliquely, that is, the axis of the connection column 341 is arranged to intersect the thickness direction Z. The axis of the connection column 341 is not the same as the thickness direction Z, and the two have an included angle. The connection column 341 of the connecting piece 34 is connected to the connection hole 31a of the shaft cover 31. Exemplarily, the axis of the connection column 341 can coincide with the axis S of the connection hole 31a.

[0076] The connecting piece 34 further includes a connection plate 342 arranged obliquely. The connection column 341 is connected to the connection plate 342. The connection plate 342 is lapped on the surface of the shaft base 32 away from the shaft cover 31, so that after the connection column 341 and the connection hole 31a of the shaft cover 31 are connected, the connection plate 342 can press the shaft base 32 to limit the position of the shaft base 32, so as to fix the shaft base 32 to the shaft cover 31.

[0077] In the shaft device 30 of the embodiment, the detachable connection between the shaft base 32 and the shaft cover 31 can be achieved through the connecting piece 34, which facilitates the maintenance of the shaft base 32 and the shaft cover 31. The connection hole 31a of the shaft cover 31 and the connecting piece 34 are both arranged obliquely with respect to the thickness direction Z, so that the thickness of the area on the shaft device 30 corresponding to the connection plate 342 of the connecting piece 34 varies. In the case where the structure size of the connecting piece 34 is the same, in the arrangement of the connection hole 31a and the connecting piece 34 along the thickness direction Z in the related art, the thickness of the area on the shaft device 30 corresponding to the connection plate 342 is a first thickness, while the maximum thickness of the area on the shaft device 30 corresponding to the connection plate 342 in the shaft device 30 of the embodiment is a second thickness. Since the connecting piece 34 and the connection hole 31a of the embodiment are arranged obliquely, the second thickness can be smaller than the first thickness, so that the space occupied in the thickness direction Z can be reduced, and the thin design of the shaft device 30 is facilitated.

[0078] Furthermore, when the structural dimensions of the connecting member 34 are the same, in the related art, in the arrangement of the connecting hole 31a and the connecting member 34 along the thickness direction Z, the orthographic projection area of ​​the connecting plate 342 along the thickness direction Z is the first projection. However, in the rotating shaft device 30 of the embodiment of the present application, the orthographic projection area of ​​the connecting plate 342 along the thickness direction Z is the second projection. Furthermore, along the width direction Y of the shaft cover 31, the width of the second projection can be smaller than the width of the first projection. This helps reduce the space occupied by the connecting plate 342 in the width direction Y, thereby making the rotating shaft device 30 more compact in the width direction Y.

[0079] In some achievable embodiments, the angle between the axis S of the connecting hole 31a and the thickness direction Z of the shaft cover 31 may be in the range of 15° to 55°. For example, when the structural dimensions of the connecting member 34 and the connecting hole 31a of the present application are the same as those of the connecting member 34 and the connecting hole 31a in the related art, the inclination angle of the connecting hole 31a of the present application may satisfy the requirement that, along the thickness direction Z, the highest point of the inclined connecting member 34 is lower than the highest point of the non-inclined connecting member 34 in the related art, thereby making the inclined connecting member 34 have an advantage in the thickness direction Z, thereby reducing the thickness of the rotating shaft device 30 at the connecting member 34 and realizing a lightweight and thin design of the rotating shaft device 30.

[0080] When the inclination angle of the connecting hole 31 a is too large, the connecting member 34 will occupy a larger space in the width direction Y, which is not conducive to reducing the width of the rotating shaft device 30 and affects the compact design of the rotating shaft device 30 .

[0081] In some possible implementations, see Figure 5 As shown, along the length direction X of the shaft cover 31, each rotating member 33 is provided with a connecting hole 31a and a connecting member 34 on either side. When the rotating member 33 rotates relative to the shaft base 32, the rotating member 33 exerts a force on the shaft base 32. The connecting members 34 on either side of the rotating member 33 exert a compressive force on the shaft base 32, effectively ensuring balanced force on the shaft base 32 and dispersing the force exerted by the rotating member 33 on the shaft base 32. This helps improve the positional stability of the shaft base 32 and reduces the possibility of the shaft base 32 becoming loose relative to the connecting member 34 or the shaft cover 31.

[0082] In some achievable ways, Figure 8 for Figure 7 Enlarged view of the middle W. Figure 7 and Figure 8 As shown, the connecting plate 342 presses against the rotating shaft base 32 to form a locking surface 200. The locking surface 200 can be perpendicular to the axis S of the connecting hole 31a.

[0083] In some embodiments, along the width direction Y of the shaft cover 31, the connection hole 31a of the shaft cover 31 is located outside the shaft base 32. The connection hole 31a is not blocked by the shaft base 32 and is visible.

[0084] In some examples, the opening of the connecting hole 31a is located near an edge of the shaft cover 31, while the bottom surface of the connecting hole 31a is located near the middle area of ​​the shaft cover 31. After the connecting post 341 of the connecting member 34 is engaged with the connecting hole 31a, the end of the connecting post 341 located in the connecting hole 31a is located near the middle area of ​​the shaft cover 31.

[0085] For some examples, see Figure 6 and Figure 8 As shown, the shaft cover 31 may include a bottom wall 311 and side walls 312. Along the width direction Y of the shaft cover 31, the two side walls 312 are respectively connected to the bottom wall 311. Connecting holes 31a are provided on the side walls 312. For example, along the width direction Y of the shaft cover 31, the two side walls 312 may be spaced apart.

[0086] In some possible implementations, see Figure 7 As shown, along the width direction Y of the shaft cover 31, a connection hole 31a and a connection member 34 are provided on either side of the shaft base 32. The connection members 34 on either side press against the shaft base 32, thereby improving the force balance and positional stability of the shaft base 32. In some examples, the connection holes 31a and the connection members 34 on either side can be symmetrically arranged. For example, the axes of the connection holes 31a on either side can intersect to form an intersection.

[0087] In some possible implementations, see Figure 8 As shown, a portion of the connecting plate 342 overlaps the surface of the rotating shaft base 32 facing away from the shaft cover 31, while a gap 100 is formed between the other portion and the shaft cover 31. The gap 100 is formed in the area of ​​the connecting plate 342 and the shaft cover 31 where the rotating shaft base 32 is not located. The area where the connecting plate 342 and the rotating shaft base 32 overlap and contact forms a locking mating surface 200. Because the gap 100 is formed between a portion of the connecting plate 342 and the shaft cover 31, the locking mating surface 200 formed between the connecting plate 342 and the rotating shaft base 32 is discontinuous at the gap 100.

[0088] If both the rotating shaft base 32 and the shaft cover 31 are in contact with the connecting plate 342, there is a possibility that the shaft cover 31 and the connecting plate 342 may contact each other, causing the connecting plate 342 to be over-positioned. If the contact surface between the shaft cover 31 and the connecting plate 342 is higher than the contact surface between the rotating shaft base 32 and the connecting plate 342, poor contact or no contact will occur between the rotating shaft base 32 and the connecting plate 342, resulting in the connecting plate 342 being unable to press the rotating shaft base 32, and the rotating shaft base 32 may be easily loosened. In the embodiment of the present application, after the connector 34 is connected to the connecting hole 31a of the shaft cover 31, the connecting plate 342 of the connector 34 only presses against the surface of the rotating shaft base 32 facing away from the shaft cover 31, and does not contact the surface of the shaft cover 31. This method is conducive to reducing the possibility of the above-mentioned problem, ensuring that the connecting plate 342 effectively presses against the rotating shaft base 32, and ensuring that the connection of the rotating shaft base 32 is stable and reliable and not prone to loosening.

[0089] In some examples, around the axis of the connecting column 341, the angle range corresponding to the overlapping area of ​​the connecting plate 342 and the rotating shaft base 32 is greater than or equal to 180°, that is, the angle range corresponding to the locking fitting surface 200 is greater than or equal to 180°, so that 1 / 2 area or an area greater than 1 / 2 of the connecting plate 342 can overlap with the rotating shaft base 32, and a gap 100 is formed between the remaining part and the shaft cover 31, reducing the possibility of deviation in the stability and reliability of the connection state between the connecting plate 342 and the rotating shaft base 32 due to the smaller overlapping area between the connecting plate 342 and the rotating shaft base 32.

[0090] Exemplarily, around the axis of the connecting column 341 , the angle corresponding to the overlapping area between the connecting plate 342 and the rotating shaft base 32 is equal to 180°.

[0091] For example, the connecting plate 342 may be a circular structure, and the locking mating surface 200 formed by the overlapping contact between the connecting plate 342 and the rotating shaft base 32 may be in an arc shape.

[0092] For some examples, see Figure 7 and Figure 8 As shown, the connecting plate 342 includes an outer end surface 342a. The outer end surface 342a of the connecting plate 342 is arranged to face away from the shaft cover 31. Along the width direction Y of the shaft cover 31, the highest point of the outer end surface 342a is away from the edge of the shaft cover 31, while the lowest point of the outer end surface 342a is close to the edge of the shaft cover 31, so that the connecting plate 342 is inclined toward the direction away from the middle area of ​​the shaft cover 31. The thickness between the highest point of the outer end surface 342a and the lowest point of the outer surface of the shaft cover 31 facing away from the rotating shaft base 32 is H1. The thickness between the lowest point of the outer end surface 342a and the lowest point of the outer surface of the shaft cover 31 facing away from the rotating shaft base 32 is H2. Among them, H2 is smaller than H1.

[0093] For example, the outer end surface 342a may be a plane and perpendicular to the axis S of the connecting hole 31a.

[0094] For example, a recess can be provided on the outer end surface 342a of the connecting plate 342. When an auxiliary tool is used to connect the connecting member 34 to the connecting hole 31a, the auxiliary tool can cooperate with the recess to apply force to the connecting member 34, thereby facilitating the connection between the connecting member 34 and the shaft cover 31. For example, the recess can be polygonal, such as a triangle, rectangle, or hexagon. Alternatively, the recess can include two intersecting strip grooves.

[0095] In some examples, the connecting plate 342 further includes an inner end surface 342b. Along the axis S of the connecting hole 31a, the outer end surface 342a and the inner end surface 342b of the connecting plate 342 are arranged opposite to each other. The inner end surface 342b of the connecting plate 342 is arranged facing the shaft cover 31. The connecting column 341 is connected to the inner end surface 342b of the connecting plate 342. A portion of the inner end surface 342b overlaps the rotating shaft base 32, and a gap 100 is formed between the other portion and the shaft cover 31. Specifically, along the axis S of the connecting hole 31a, the orthographic projection area of ​​the inner end surface 342b is larger than the orthographic projection area of ​​the connecting column 341. The portion of the inner end surface 342b located outside the connecting column 341 overlaps the surface of the rotating shaft base 32 facing away from the shaft cover 31.

[0096] For example, the inner end surface 342b can be a flat surface. The inner end surface 342b and the axis S of the connecting hole 31a are perpendicular to each other, so that the locking surface 200 formed by the inner end surface 342b and the rotating shaft base 32 is perpendicular to the axis S of the connecting hole 31a. The outer end surface 342a can be a flat surface. The outer end surface 342a and the inner end surface 342b can be arranged in parallel.

[0097] In some possible implementations, see Figure 6 As shown, the shaft cover 31 also includes an avoidance notch 312a. The avoidance notch 312a is formed by removing material from a portion of the shaft cover 31. The connecting hole 31a of the shaft cover 31 is connected to the avoidance notch 312a. Along the width direction Y of the shaft cover 31, the avoidance notch 312a is arranged facing the connecting hole 31a. At least part of the connecting member 34 is located in the avoidance notch 312a, so that the overlapping area between the connecting member 34 and the shaft cover 31 can be increased in the width direction Y, which is beneficial to reducing the space occupied by the connecting member 34 in the width direction Y, and is beneficial to reducing the width of the shaft cover 31. At the same time, in the thickness direction Z, the connecting member 34 can make full use of the space of the avoidance notch 312a to effectively reduce the thickness of the connecting member 34 and the shaft cover 31 after superposition, which is beneficial to further reduce the thickness of the rotating shaft device 30 in the thickness direction Z.

[0098] In some examples, the shaft cover 31 includes a bottom wall 311 and side walls 312. Along the width direction Y, the two side walls 312 are connected to the bottom wall 311. The side walls 312 are provided with connection holes 31a and avoidance notches 312a. Along the width direction Y, the avoidance notches 312a extend through two opposing surfaces of the side walls 312.

[0099] In some examples, the rotating shaft base 32 includes an avoidance recess 321. The avoidance notch 312a of the shaft cover 31 is connected to the avoidance recess 321 of the rotating shaft base 32. Along the width direction Y of the shaft cover 31, the avoidance notch 312a is arranged facing the avoidance recess 321. The avoidance recess 321 is arranged facing the connecting hole 31a. A portion of the connecting member 34 is located in the avoidance recess 321, so that the overlapping area between the connecting member 34 and the rotating shaft base 32 in the width direction Y can be increased, which is beneficial to reducing the space occupied by the connecting member 34 in the width direction Y and the width of the rotating shaft base 32. At the same time, in the thickness direction Z, the connecting member 34 can make full use of the space of the avoidance recess 321 to effectively reduce the thickness of the connecting member 34 and the rotating shaft base 32 after being superimposed, which is beneficial to further reduce the thickness of the rotating shaft device 30 in the thickness direction Z.

[0100] Illustratively, a portion of the connecting plate 342 of the connector 34 is located within the relief notch 312a on the shaft cover 31, creating a gap with the inner wall of the relief notch 312a in the thickness direction Z. Another portion of the connecting plate 342 is located within the relief recess 321 and presses against the surface of the shaft base 32 facing the relief notch 312a. Illustratively, along the width direction Y, the connecting plate 342 does not extend beyond the relief notch 312a. Along the thickness direction Z, the connecting plate 342 does not extend beyond the relief recess 321.

[0101] In some possible implementations, see Figure 7 As shown, the shaft cover 31 includes a receiving portion 31b. Along the width direction Y of the shaft cover 31, the shaft cover 31 includes two inclined inner walls 312b. The inclined inner walls 312b are arranged facing the receiving portion 31b. In the direction away from the shaft base 32, the two inclined inner walls 312b approach each other, that is, the inclined inner walls 312b are inclined outward, so that the cross-sectional area of ​​the receiving portion 31b is reduced along the thickness direction Z. The shaft base 32 also includes a matching portion 322. The matching portion 322 of the shaft base 32 is located in the receiving portion 31b of the shaft cover 31. The shape of the matching portion 322 matches the shape of the receiving portion 31b, so that the shaft base 32 can avoid the inclined connection hole 31a, so that the shaft cover 31 has sufficient space to set the connection hole 31a, and avoid the connection column 341 and the shaft base 32 from overlapping and interfering with each other.

[0102] After the shaft base 32 and the shaft cover 31 are assembled, the connector 34 is connected to the connecting hole 31a of the shaft cover 31. After the connector 34 is connected to the connecting hole 31a of the shaft cover 31, the connector 34 presses the shaft base 32. For example, along the width direction Y, the connectors 34 on both sides of the shaft base 32 are simultaneously connected to the connecting holes 31a. This allows the connectors 34 on both sides to press the shaft base 32 simultaneously, thereby ensuring that the force on the shaft base 32 is balanced and preventing the shaft base 32 from warping along the thickness direction Z due to a greater compressive force on one side of the shaft base 32.

[0103] In some examples, the shaft base 32 further includes a folding portion 323. The fitting portion 322 is connected to the folding portion 323. Along the width direction Y of the shaft cover 31, the folding portion 323 is folded relative to the fitting portion 322 toward the edge of the shaft cover 31. The folding portion 323 of the shaft base 32 is located outside the accommodating portion 31b of the shaft cover 31 and overlaps the shaft cover 31. Specifically, the folding portion 323 overlaps the surface of the shaft cover 31 near the opening of the accommodating portion 31b. The connecting member 34 presses against the surface of the folding portion 323 facing away from the shaft cover 31, so that the connecting member 34 and the shaft cover 31 jointly press the folding portion 323. The area where the connecting plate 342 and the folding portion 323 contact forms a locking fitting surface 200.

[0104] Illustratively, the shaft cover 31 includes a bottom wall 311 and side walls 312. Along the width direction Y, a receiving portion 31b is formed between the two side walls 312. The side walls 312 have inclined inner walls 312b. The folded portion 323 is located above the side walls 312 and overlaps the surface of the side walls 312.

[0105] In some examples, after the connector 34 is installed in a predetermined position and presses the shaft base 32 , a gap is formed between the matching portion 322 of the shaft base 32 and the inclined inner wall 312 b of the shaft cover 31 .

[0106] If the mating portion 322 of the shaft base 32 and the inclined inner wall 312b of the shaft cover 31 come into contact with each other, the shaft base 32 and the shaft cover 31 may come into contact, resulting in the shaft base 32 being over-positioned. This will cause a gap to appear between the folded portion 323 of the shaft base 32 and the shaft cover 31, preventing contact. Consequently, the folded portion 323 may not be supported by the shaft cover 31, preventing the connecting plate 342 from pressing against the shaft base 32, and potentially causing the shaft base 32 to become loose. In this embodiment of the present application, a gap exists between the mating portion 322 of the shaft base 32 and the inclined inner wall 312b of the shaft cover 31, thereby ensuring good contact between the folded portion 323 and the shaft cover 31. After the connecting piece 34 is connected to the connecting hole 31a of the shaft cover 31, the connecting plate 342 and the shaft cover 31 respectively press the folded portion 323 of the rotating shaft base 32 from both sides, which helps to reduce the possibility of the above-mentioned problems, ensure that the connecting plate 342 effectively presses the rotating shaft base 32, and ensure that the connection of the rotating shaft base 32 is stable and reliable and not easy to loosen.

[0107] In some achievable ways, Figure 9 The partial cross-sectional structure of the rotating shaft device 30 of the present application is schematically shown. Figure 9 As shown, the shaft cover 31 includes a groove 310. The shaft base 32 includes a transverse portion 32a and an overlapping portion 32b. Along the width direction Y of the shaft cover 31, overlapping portions 32b are respectively provided on both sides of the transverse portion 32a. Along the thickness direction Z of the shaft cover 31, the transverse portion 32a of the shaft base 32 is provided corresponding to the opening of the groove 310. The overlapping portion 32b of the shaft base 32 overlaps the end face of the shaft cover 31 close to the opening of the groove 310. The overlapping portion 32b includes an inclined surface. The inclined surface can be perpendicular to the axis S of the connecting hole 31a. The inner end face 342b of the connecting plate 342 contacts the inclined surface of the overlapping portion 32b to form a locking fitting surface 200.

[0108] In some examples, the inclined surface may be a plane and may be perpendicular to the axis S of the connecting hole 31 a.

[0109] In some examples, two opposing side surfaces of the groove 310 are parallel to each other along the width direction Y of the shaft cover 31. The bottom surface of the groove 310 may be perpendicular to the side surfaces.

[0110] In some feasible embodiments, along the thickness direction Z of the shaft cover 31, the orthographic projection of the connecting member 34 can be located within the orthographic projection of the shaft cover 31, that is, along the width direction Y of the shaft cover 31, the connecting member 34 does not exceed the side surface of the shaft cover 31, so that the maximum width of the connecting member 34 and the shaft cover 31 in the width direction Y after the connection is made is limited by the width of the shaft cover 31 itself, which is beneficial to reducing the space occupied by the connecting member 34 and the shaft cover 31 in the width direction Y after the connection is made.

[0111] In some possible implementation manners, the connecting hole 31a on the shaft cover 31 can be a blind hole. The connecting hole 31a has an opening. Specifically, the opening of the connecting hole 31a faces the flexible display screen 50. After the connecting column 341 of the connecting piece 34 is connected with the connecting hole 31a, a gap is formed between the end of the connecting column 341 and the bottom surface of the connecting hole 31a. If the connecting column 341 contacts the bottom surface of the connecting hole 31a, the shaft cover 31 will limit the connecting piece 34, causing poor contact or no contact between the connecting plate 342 and the shaft base 32, so that the connecting plate 342 cannot press the shaft base 32 tightly, and the shaft base 32 is prone to loosening. In the embodiment of the present application, since the gap is formed between the connecting column 341 and the bottom surface of the connecting hole 31a, the connecting column 341 is not limited by the shaft cover 31, so that after the connecting piece 34 is connected with the connecting hole 31a, it can be ensured that the connecting plate 342 can press the shaft base 32 tightly, so that the position of the shaft base 32 is stable and is not prone to loosening.

[0112] In some possible implementation manners, the connecting column 341 and the connecting hole 31a can be threadedly connected. The connecting column 341 has external threads, and the connecting hole 31a has internal threads. During the connection of the connecting column 341 and the connecting hole 31a, a rotating torque is applied to the connecting plate 342 to synchronously rotate the connecting plate 342 and the connecting column 341, so that the connecting column 341 is gradually screwed into the connecting hole 31a. Since the connecting column 341 and the connecting hole 31a both have threads, the amount of thread engagement between the connecting column 341 and the connecting hole 31a can be adjusted to control the pressing force applied by the connecting plate 342 to the shaft base 32, which is beneficial to accurately control the pressing force applied by the connecting plate 342 to the shaft base 32.

[0113] When the pressing force applied by the connecting plate 342 to the shaft base 32 is too small, the shaft base 32 is prone to loosening relative to the connecting plate 342 under the action of an external force. Since a part of the connecting plate 342 is in a suspended state relative to the shaft cover 31, when the pressing force applied by the connecting plate 342 to the shaft base 32 is too large, the internal stress borne by the end of the connecting plate 342 abutting against the shaft base 32 is large, and the connecting plate 342 is prone to breaking. Therefore, the amount of thread engagement between the connecting column 341 and the connecting hole 31a can be adjusted to accurately control the pressing force applied by the connecting plate 342 to the shaft base 32, which can effectively solve the above problems.

[0114] In some possible implementation manners, Figure 10 and Figure 11 respectively schematically show the partial cross-sectional structure of the shaft device 30 of the present application. Referring to Figure 10 and Figure 11As shown, the connecting column 341 can be snap-connected to the connecting hole 31a. The shaft cover 31 includes a guide groove 31c and a snap-connecting groove 31d. The guide groove 31c and the snap-connecting groove 31d are arranged on the inner wall of the connecting hole 31a. The guide groove 31c extends along the axis S of the connecting hole 31a, while the snap-connecting groove 31d extends along the circumference of the connecting hole 31a. The bottom of the guide groove 31c near the connecting hole 31a is connected to the snap-connecting groove 31d. The outer peripheral surface of the connecting column 341 is provided with a snap-connecting protrusion 343. When the connecting column 341 and the connecting hole 31a are connected, the snap-connecting protrusion 343 of the connecting column 341 is aligned with the guide groove 31c and inserted into the guide groove 31c. When the engaging protrusion 343 of the connecting column 341 is aligned with the engaging groove 31d, a rotational torque is applied to the connecting plate 342, so that the connecting plate 342 drives the connecting column 341 to rotate, and the engaging protrusion 343 on the connecting column 341 enters the engaging groove 31d to achieve engaging. At this time, the connecting plate 342 is in a state of pressing the rotating shaft base 32.

[0115] In some examples, there are two guide grooves 31c and two engaging grooves 31d. The two guide grooves 31c and the two engaging grooves 31d are spaced apart along the circumference of the connecting hole 31a. The connecting post 341 is provided with two engaging protrusions 343. The two engaging protrusions 343 are spaced apart along the circumference of the connecting post 341.

[0116] In the description of the embodiments of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to a fixed connection, an indirect connection via an intermediate medium, internal communication between two components, or an interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of this application based on specific circumstances.

[0117] In the embodiments of the present application, any device or element referred to or implied must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as limiting the embodiments of the present application. In the description of the embodiments of the present application, the meaning of "plurality" is two or more, unless otherwise specifically specified.

[0118] The terms "first," "second," "third," "fourth," and so on (if any) in the description and claims of the embodiments of the present application and in the accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a particular order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in orders other than those illustrated or described herein.

[0119] In addition, the terms "comprises" and "having" and any variations thereof are intended to cover a non-exclusive inclusion. For example, a process, method, system, product or apparatus that includes a series of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, product or apparatus.

[0120] The term "plurality" in this document refers to two or more. The term "and / or" in this document simply describes a relationship between related objects, indicating that three possible relationships exist. For example, "A and / or B" can represent: A alone, A and B together, or B alone. Furthermore, the character " / " in this document generally indicates an "or" relationship between the related objects; in a formula, the character " / " indicates a "division" relationship between the related objects.

[0121] It will be understood that the various numerical numbers involved in the embodiments of the present application are merely distinctions for the convenience of description and are not intended to limit the scope of the embodiments of the present application.

[0122] It can be understood that in the embodiments of the present application, the size of the serial numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

Claims

1. A hinge device for a folding screen device, characterized in that: At least: The rotating shaft assembly includes a rotating shaft base, wherein the rotating shaft base includes a matching portion and a folding portion, wherein the matching portion is connected to the folding portion; A shaft cover, wherein the shaft cover and the rotating shaft base are stacked along the thickness direction of the shaft cover, the shaft cover includes an obliquely arranged connecting hole and a receiving portion, and the axis of the connecting hole is arranged to intersect with the thickness direction; The matching portion is located in the accommodating portion, and the shape of the matching portion matches the shape of the accommodating portion; Along the width direction of the shaft cover, the shaft cover includes two inclined inner walls, the inclined inner walls are arranged facing the accommodating portion, and along the direction away from the shaft base, the two inclined inner walls are close to each other; a connecting member, the connecting member connects the shaft base and the shaft cover, the connecting member includes an inclined connecting column and a connecting plate, the connecting column is connected to the connecting plate, the connecting column is connected to the connecting hole, and the connecting plate is overlapped on the surface of the shaft base facing away from the shaft cover; The folded portion is located outside the accommodating portion and overlaps the shaft cover, and the connecting member is pressed against a surface of the folded portion facing away from the shaft cover.

2. The rotating shaft device according to claim 1, characterized in that: Along the width direction of the shaft cover, the connecting hole is located on the outer side of the rotating shaft base.

3. The rotating shaft device according to claim 2, characterized in that: The connecting holes and the connecting pieces are respectively provided on both sides of the rotating shaft base along the width direction.

4. The rotating shaft device according to claim 3, characterized in that: A portion of the connecting plate overlaps the surface of the rotating shaft base facing away from the shaft cover, and a gap is formed between the other portion of the connecting plate and the shaft cover.

5. The rotating shaft device according to claim 4, characterized in that: Around the axis of the connecting column, the angle range corresponding to the overlapping area of ​​the connecting plate and the rotating shaft base is greater than or equal to 180°.

6. The rotating shaft device according to claim 5, characterized in that: The connecting plate includes an outer end surface facing away from the shaft cover. Along the width direction of the shaft cover, the highest point of the outer end surface is away from the edge of the shaft cover, and the lowest point of the outer end surface is close to the edge of the shaft cover.

7. The rotating shaft device according to claim 6, characterized in that: The connecting plate further includes an inner end surface, which is arranged facing the shaft cover and overlaps the rotating shaft base.

8. The rotating shaft device according to any one of claims 1 to 7, characterized in that: The shaft cover further includes an avoidance gap, which is arranged facing the connecting hole along the width direction of the shaft cover, and at least a portion of the connecting member is located in the avoidance gap.

9. The rotating shaft device according to claim 8, characterized in that: The rotating shaft base includes an avoidance recess. Along the width direction of the shaft cover, the avoidance notch is arranged facing the avoidance recess. The avoidance recess is arranged facing the connecting hole. A part of the connecting member is located in the avoidance recess.

10. The rotating shaft device according to claim 1, characterized in that: A gap is formed between the matching portion and the inclined inner wall.

11. The rotating shaft device according to claim 10, characterized in that: Along the thickness direction, the orthographic projection of the connecting member is located within the orthographic projection of the shaft cover.

12. The rotating shaft device according to claim 11, characterized in that: The connecting hole is a blind hole.

13. The rotating shaft device according to claim 12, characterized in that: The connecting column is threadedly connected to the connecting hole.

14. The rotating shaft device according to any one of claims 1 to 7 and 9 to 13, characterized in that: The angle between the axis of the connecting hole and the thickness direction ranges from 15° to 55°.

15. A folding screen device, characterized in that: Comprising the rotating shaft device according to any one of claims 1 to 14.

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