A support beam, a rotating shaft mechanism, a support device and a folding screen device

Abstract

The present application provides a support beam, a rotating shaft mechanism, a support device and a folding screen device, which are used to solve the problem of how to improve the accuracy of the rotating shaft mechanism. The first beam section of the support beam includes a first main body section and a first end portion, the first end portion has a first end face and a first side face and a second side face opposite to each other, the first end face is opposite to the first main body section; the first side face is provided with a first recessed portion, and the first recessed portion runs through the first end face. The second beam section includes a second main body section and a second end portion, the second end portion has a second end face, and the second end face is opposite to the second main body section; at least part of the second end portion is located in the first recessed portion. The first end portion and the second end portion are connected by a connecting member. Among them, one of the second end face and the side wall surface of the first recessed portion opposite to the first main body section is provided with a first limit block, and the other is provided with a first limit recessed portion, and the first limit block is accommodated and matched in the first limit recessed portion. The support beam provided by the present application can improve the accuracy of the rotating shaft mechanism.

Description

Technical Field

[0001] The present application relates to the technical field of folding screen equipment, and in particular to a support beam, a hinge mechanism, a support device and a folding screen equipment. Background Art

[0002] With the advancement of technology, large-screen devices are becoming more and more popular among consumers. In order to solve the problem that traditional tablet devices are large in size and inconvenient to carry, foldable screen devices have come into being. The foldable screen device includes a support device for supporting the foldable screen, and the support device includes two side shells and a shaft mechanism connected between the two side shells. Among them, the shaft mechanism is used to support the bendable part of the foldable screen and is the core component of the foldable screen device.

[0003] The support beam of the hinge mechanism provides a position reference and is a key component of the hinge mechanism. It is the key to the overall strength of the hinge mechanism and the strength of the folding screen device. In addition, the accuracy of the support beam also has an important impact on the performance of the folding screen device. For example, the flatness of the support surface of the support beam determines the display effect of the folding screen device screen. In the related art, the accuracy of the support beam is poor, resulting in poor accuracy of the overall hinge mechanism. Summary of the invention

[0004] The embodiments of the present application provide a support beam, a rotating shaft mechanism, a support device and a folding screen device, which are used to solve the problem of how to improve the accuracy of the support beam.

[0005] To achieve the above objectives, the embodiments of the present application adopt the following technical solutions:

[0006] In the first aspect, the embodiment of the present application provides a support beam, which includes a first beam section, a second beam section and a connecting member. The first beam section includes a first main section and a first end portion, the first end portion has a first end face and a first side face and a second side face opposite to each other, the first end face is opposite to the first main section; the first side face is provided with a first recessed portion recessed toward the second side face, and the first recessed portion runs through the first end face. The second beam section includes a second main section and a second end portion, the second end portion has a second end face, and the second end face is opposite to the second main section; at least part of the second end portion is located in the first recessed portion. At least part of the first end portion and the second end portion are connected by a connecting member. Among them, the second end face is provided with a first limit block, and the side wall surface of the first recessed portion opposite to the first main section is provided with a first limit recessed portion recessed toward the first main section; or, the side wall surface of the first recessed portion opposite to the first main section is provided with a first limit block, and the second end face is provided with a first limit recessed portion recessed toward the second main section. The first limit block is accommodated and matched in the first limit recessed portion.

[0007] The support beam provided in the embodiment of the present application is provided with a first limit block on one of the second end face and the side wall surface of the first recessed portion, and the other is provided with a first limit recessed portion, the first limit block is accommodated and cooperated in the first limit recessed portion, so that the first limit block and the first limit recessed portion can at least limit the movement of the first beam section relative to the second beam section along the length direction and the width direction of the support beam; by making at least a part of the second end portion located in the first limit recessed portion, the movement of the first beam section relative to the second beam section along the thickness direction of the support beam and the rotation around the width direction of the support beam can be at least limited; the first limit block and the connecting piece can work together to limit the rotation of the first beam section relative to the second beam section around the length direction and the thickness direction of the support beam, thereby realizing the limitation and fixation of the first beam section relative to the second beam section, ensuring the reliability of the connection between the first beam section and the second beam section, and facilitating the rapid assembly of the first beam section and the second beam section.

[0008] In addition, since the support beam is a split structure formed by connecting the first beam segment and the second beam segment, the length dimensions of the first beam segment and the second beam segment are relatively small. During actual processing and production, the processing tolerance is relatively small and the precision is relatively high. The surface flatness of the first beam segment and the second beam segment used to support the folding screen is relatively good, and thus the surface flatness of the support beam as a whole used to support the folding screen is relatively good. Therefore, the overall precision of the rotating shaft mechanism using the support beam is relatively high, thereby ensuring the display effect of the folding screen.

[0009] In some possible implementations of the first aspect, the first limiting recess passes through the first side surface. Along the direction from the opening of the first limiting recess to the bottom wall surface, the width of at least a portion of the first limiting block in the first direction is greater than the width of the opening of the first limiting recess in the first direction, and the first direction is parallel to the first side surface and perpendicular to the length direction of the support beam.

[0010] In this way, the first limit block and the first limit recess can not only limit the first beam section from moving in the direction close to the second beam section along the length direction of the support beam, but also limit the first beam section from moving in the direction away from the second beam section along the length direction of the support beam, thereby achieving precise positioning of the first beam section and the second beam section along the length direction of the support beam, and preventing the connecting piece from being a fastener and the mounting hole on the first beam section or the second beam section being a bare hole, so that the fitting clearance between the connecting piece and the mounting hole is large, so that when the rotating shaft mechanism using the support beam is subjected to impact force, the first beam section moves relative to the second beam section and affects the reliability of the rotating shaft mechanism.

[0011] In some possible implementations of the first aspect, the cross-sectional profile of the first limiting block in the first plane is trapezoidal, the bottom edge of the trapezoid close to the bottom wall surface of the first limiting recess is the lower bottom edge, and the first plane is parallel to the first side surface.

[0012] In this way, the first limit block and the first limit recess are dovetail mortise and tenon structures, which can achieve precise positioning of the first beam section and the second beam section in the length direction of the support beam, and can also achieve precise positioning of the first beam section relative to the second beam section in the thickness direction of the support beam, further improving the reliability of the rotating shaft mechanism using the support beam.

[0013] In some possible implementations of the first aspect, the angle between any side of the trapezoid and the lower base is greater than or equal to 85° and less than or equal to 89°.

[0014] In this way, the precise positioning performance of the aforementioned dovetail mortise and tenon structure can be ensured, and demolding can be facilitated when the first beam section, the second beam section, and the first limit block are formed by the metal injection process.

[0015] In some possible implementations of the first aspect, the second end has a third side surface and a fourth side surface, and the fourth side surface faces the bottom wall surface of the first recessed portion. The first limit block is disposed on the second end surface, and a surface of the first limit block facing the bottom wall surface of the first recessed portion is coplanar with the fourth side surface, and a surface of the first limit block facing away from the bottom wall surface of the first recessed portion is coplanar with the third side surface.

[0016] In this way, the first limit block is arranged on the second end face, which is convenient for designing and processing the first limit block. In addition, the height of the first limit block in the thickness direction of the support beam is the same as the thickness of the second end portion, which can make the strength of the first limit block as large as possible, thereby ensuring the strength of the second beam section, and further ensuring the overall strength of the rotating shaft mechanism using the support beam.

[0017] In some possible implementations of the first aspect, the second end has a third side surface and a fourth side surface, and the fourth side surface faces the bottom wall surface of the first recessed portion. The support beam also includes a first positioning column. The first positioning column is arranged on the fourth side surface, and the bottom wall surface of the first recessed portion has a first positioning hole, and the first positioning column is accommodated and matched in the first positioning hole.

[0018] In some possible implementations of the first aspect, the second end has a third side surface and a fourth side surface, and the fourth side surface faces the bottom wall surface of the first recessed portion. The support beam also includes a first positioning column. The first positioning column is arranged on the bottom wall surface of the first recessed portion, and the fourth side surface has a first positioning hole, and the first positioning column is accommodated and matched in the first positioning hole.

[0019] In this way, the first positioning column can achieve precise positioning of limiting the rotation of the first beam section relative to the second beam section around the width direction of the support beam and around the length direction of the support beam, further ensuring the reliability of the rotating shaft mechanism using the support beam.

[0020] In some possible implementations of the first aspect, the first positioning column is disposed on the fourth side surface, the first limiting block is disposed on the second end surface, and a portion of the first positioning column protrudes from the second end surface and is connected to the first limiting block.

[0021] In this way, the distance between the first positioning column and the first limiting block is relatively close, which can prevent the distance between the two from being relatively far, resulting in a large processing tolerance, which makes it difficult for the two to be accommodated and matched with the first positioning hole and the first limiting recess at the same time. Therefore, the assembly difficulty of the first beam section and the second beam section is reduced. In addition, a part of the first positioning column is connected to the first limiting block, which can improve the strength of the connection between the first positioning column, the first limiting block and the second beam section.

[0022] In some possible implementations of the first aspect, an orthographic projection of a portion of the first positioning column in the first plane overlaps with an orthographic projection of the first limiting block in the first plane; and the first plane is parallel to the first side surface.

[0023] In this way, the cross-sectional shape and size of the portion of the first positioning column protruding from the second end face are consistent with the cross-sectional shape and size of the first limiting block, which facilitates the design and processing of the first positioning column and the first limiting block, and correspondingly, the design and processing of the first positioning hole and the first limiting recess are also facilitated. In addition, the difficulty of assembling the first beam section and the second beam section is reduced.

[0024] In some possible implementations of the first aspect, the first positioning column is disposed on the fourth side surface, and an end surface of the first positioning column away from the fourth side surface is flush with the second side surface.

[0025] In this way, the height of the first positioning column can be made as large as possible to ensure the strength of the first positioning column, and the first positioning column can be prevented from protruding from the second side surface and interfering with other components of the rotating shaft mechanism using the support beam.

[0026] In some possible implementations of the first aspect, the second end portion has a third side surface and a fourth side surface facing each other, and the fourth side surface faces the bottom wall surface of the first recessed portion; the fourth side surface is provided with a second recessed portion and a third recessed portion spaced apart along a first direction; the first direction is parallel to the first side surface and is perpendicular to the length direction of the support beam. The bottom wall surface of the first recessed portion has a second limit block and a third limit block spaced apart along the first direction, and the second limit block, the third limit block and the bottom wall surface of the first recessed portion enclose a limit space. The second end portion between the second recessed portion and the third recessed portion is accommodated and fitted in the limit space.

[0027] In this way, the cooperation between the second end portion between the second recessed portion and the third recessed portion and the limiting space can also at least limit the movement of the first beam segment relative to the second beam segment along the length direction and the width direction of the supporting beam, thereby ensuring the reliability of the limiting between the first beam segment and the second beam segment. At the same time, it can also compensate for the limiting strength of the first limiting block to prevent the first beam segment and the second beam segment from being subjected to impact force multiple times. The first limiting block is a cantilever structure and is easy to deform, resulting in a decrease in the assembly accuracy between the first beam segment and the second beam segment, thereby reducing the overall reliability of the rotating shaft mechanism using the support beam.

[0028] In a second aspect, an embodiment of the present application provides a pivot mechanism, which includes a support beam and a first door panel. The support beam is the support beam described in any of the aforementioned implementations. The first door panel is arranged on one side of the support beam along a first direction, and the first direction is parallel to the first side surface and perpendicular to the length direction of the support beam. The first door panel is rotatably connected to the first beam section around a first axis, and / or the first door panel is rotatably connected to the second beam section around the first axis; the first axis is parallel to the length direction of the support beam.

[0029] Since the rotating shaft mechanism provided in the embodiment of the present application includes the support beam implemented as above, the two can solve the same problem and achieve the same effect, which will not be repeated here.

[0030] In some possible implementations of the second aspect, the first door panel includes a first panel segment and a second panel segment. A first panel segment is disposed on one side of a first beam segment along a first direction. A second panel segment is disposed on one side of a second beam segment along the first direction, and the second panel segment is detachably connected to the first panel segment. The first panel segment is rotationally connected to the first beam segment around a first axis; and / or the second panel segment is rotationally connected to the second beam segment around the first axis.

[0031] In this way, the first door panel is a split structure formed by connecting the first panel segment and the second panel segment. Therefore, the length dimensions of the first panel segment and the second panel segment are relatively small. During actual processing and production, the processing tolerance is relatively small and the precision is relatively high. The surfaces of the first panel segment and the second panel segment used to support the folding screen have relatively good flatness, and thus the surface of the first door panel as a whole used to support the folding screen has relatively good flatness. Therefore, the overall precision of the hinge mechanism is relatively high, thereby ensuring the display effect of the folding screen.

[0032] In some possible implementations of the second aspect, the shaft mechanism further includes a first shaft, the first shaft includes a first shaft section and a second shaft section. The second beam section is provided with a first shaft hole, the first shaft section is inserted into the first shaft hole, and the second shaft section is provided on the second plate section; an end of the second shaft section away from the first shaft section faces a side wall surface of the first recessed portion that faces away from the first main body section, and a distance between the two along the length direction of the support beam is less than a length of the first shaft section.

[0033] In some possible implementations of the second aspect, the shaft mechanism further includes a first shaft, the first shaft includes a first shaft segment and a second shaft segment. The second plate segment is provided with a first shaft hole, the first shaft segment is inserted into the first shaft hole, and the second shaft segment is provided in the second beam segment; an end of the first shaft hole away from the second shaft segment faces a side wall surface of the first recessed portion that faces away from the first main body segment, and a distance between the two along the length direction of the support beam is less than a length of the first shaft segment.

[0034] In this way, during the rotation of the first door panel relative to the support beam, the side wall surface of the first recessed portion can prevent the first shaft section from detaching from the first shaft hole, thereby preventing the second beam section from detaching from the second plate section, thereby ensuring the overall reliability of the hinge mechanism.

[0035] In some possible implementations of the second aspect, the first plate segment has a third end face, the second plate segment has a fourth end face, one of the third end face and the fourth end face is provided with a fourth limit block, and the other is provided with a second limit recess, and the fourth limit block is accommodated and engaged in the second limit recess.

[0036] In this way, the first plate segment and the second plate segment can be detachably connected by plugging, which facilitates quick detachment of the first plate segment and the second plate segment.

[0037] In some possible implementations of the second aspect, the fourth limit block includes a main limit block and an auxiliary limit block, the profile of the cross section of the main limit block in the second plane is non-circular, and the profile of the cross section of the auxiliary limit block in the second plane is at least a portion of a circle; the second plane is perpendicular to the length direction of the support beam. The second limit recess includes a main limit recess and an auxiliary limit recess, the main limit block is accommodated and matched in the main limit recess, and the matching gap between the two is a first gap; an auxiliary limit block is accommodated and matched in an auxiliary limit recess, and the matching gap between the two is a second gap, and the second gap is smaller than the first gap.

[0038] In this way, the first plate segment and the second plate segment can be roughly positioned by the cooperation between the main limit block and the main limit recess, and the first plate segment and the second plate segment can be precisely positioned by the cooperation between the auxiliary limit block and the auxiliary limit recess, thereby ensuring the reliability of the detachable connection between the first plate segment and the second plate segment and facilitating the design, processing and assembly of the first plate segment and the second plate segment. In addition, the volume of the main limit block can be made as large as possible to ensure the strength of the main limit block, thereby ensuring the strength of the entire shaft mechanism.

[0039] In some possible implementations of the first aspect, the bottom wall surface of the first recessed portion is provided with a fifth recessed portion recessed toward the second side surface, and the fifth recessed portion penetrates the first end surface. The second end portion has a third side surface and a fourth side surface, and the fourth side surface faces the bottom wall surface of the first recessed portion; the fourth side surface is provided with a sixth recessed portion and a seventh recessed portion recessed toward the third side surface, the sixth recessed portion is located between the seventh recessed portion and the second end surface, the sixth recessed portion penetrates the side wall surface of the seventh recessed portion, and the inner wall surface of the sixth recessed portion and the inner wall surface of the fifth recessed portion surround a second shaft hole. The rotating shaft mechanism also includes a first swing arm, a second rotating shaft and a second door panel, the second door panel is located on a side of the second plate section away from the second beam section and is rotatably connected to the second plate section; one end of the first swing arm is located in the seventh recessed portion, the second rotating shaft is arranged at one end of the first swing arm and penetrates the second shaft hole, and the other end of the first swing arm is slidably connected to the second door panel. The first swing arm is used to rotate relative to the support beam so that the rotating shaft mechanism moves between the unfolded state and the folded state.

[0040] In this way, the first end of the first beam section and the second end of the second beam section are surrounded by a second axial hole, and the first swing arm is rotatably connected to the support beam through the second rotating shaft passing through the second axial hole. The first swing arm and the support beam can be assembled without providing an installation avoidance groove on the support beam to avoid the second rotating shaft.

[0041] In a third aspect, an embodiment of the present application provides a support device, which includes a shaft mechanism and a first shell. The shaft mechanism is the shaft mechanism described in any of the above implementations. The first shell is connected to the first door panel and can rotate relative to the first door panel.

[0042] Since the supporting device provided in the embodiment of the present application includes a rotating shaft mechanism implemented as above, the two can solve the same problem and achieve the same effect, which will not be described in detail here.

[0043] In a fourth aspect, an embodiment of the present application provides a folding screen device, which includes a folding screen and a supporting device. The folding screen includes a first part and a second part connected to each other. The supporting device is the supporting device described in the above implementation, the first part is fixed to the first shell, and the second part is supported on the rotating shaft mechanism.

[0044] Since the folding device provided in the embodiment of the present application includes a supporting device implemented as above, the two can solve the same problem and achieve the same effect, which will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 A three-dimensional diagram of a folding screen device in an unfolded state provided by some embodiments of the present application;

[0046] Figure 2 for Figure 1A schematic diagram of a partial exploded structure of a folding screen device shown;

[0047] Figure 3 for Figure 1 A schematic diagram of the structure of the folding screen device shown in the figure when it is in a folded state;

[0048] Figure 4 for Figure 2 A structural schematic diagram of the folding screen device shown is in an unfolded state;

[0049] Figure 5 for Figure 4 A schematic diagram of the structure of the rotating shaft mechanism shown in a folded state;

[0050] Figure 6 for Figure 2 Another structural schematic diagram of the folding screen device shown is in an unfolded state;

[0051] Figure 7 for Figure 6 Schematic diagram of the exploded structure of the rotating shaft mechanism shown;

[0052] Figure 8 for Figure 7 A partial structural diagram of the support beam of the rotating shaft mechanism shown;

[0053] Fig. 9 for Figure 8 A schematic structural diagram of a first beam section of the support beam shown;

[0054] Fig.10 for Figure 8 A schematic structural diagram of the second beam section of the supporting beam shown;

[0055] Fig.11 for Figure 8 A cross-sectional structural diagram of the support beam at line AA is shown;

[0056] Fig.12 for Figure 8 A cross-sectional structural diagram of the support beam at line BB is shown;

[0057] Fig.13 Partial structural diagram of support beams provided for other embodiments of the present application;

[0058] Fig.14 for Fig.13 The cross-sectional structure diagram of the support beam at the CC line is shown;

[0059] Fig.15 for Figure 8 Another structural schematic diagram of the second beam section of the supporting beam shown;

[0060] Fig.16 for Figure 8 Another cross-sectional structural diagram of the support beam at line BB is shown;

[0061] Fig.17 for Figure 8 A partial structural diagram of the first door panel shown;

[0062] Fig.18 for Fig.17 A schematic structural diagram of a first panel section of a first door panel is shown;

[0063] Fig.19 for Fig.17 A schematic structural diagram of the second panel section of the first door panel shown;

[0064] Fig. 20 for Fig.17 The cross-sectional structure diagram of the first door panel at line DD shown;

[0065] Fig.21 for Figure 6 An exploded structural diagram of a portion of the structure of the rotating shaft mechanism shown;

[0066] Fig. 22 for Figure 6 A partial structural schematic diagram of the rotating shaft mechanism shown;

[0067] Fig.23 for Fig. 22 The cross-sectional structure diagram of the rotating shaft mechanism at line EE is shown;

[0068] Fig.24 for Figure 6 A schematic diagram of the structure of the rotating shaft mechanism shown in a folded state;

[0069] Fig.25 for Fig.24 A schematic diagram of a portion of the structure of the rotating shaft mechanism when viewed from another angle;

[0070] Fig.26 for Fig. 22 A cross-sectional structural diagram of a support device formed by assembling a rotating shaft mechanism with a first shell and a second shell.

[0071] Reference numerals:

[0072] 100-Folding screen devices;

[0073] 10-folding screen; 11-first part; 12-second part; 121-first transition section; 122-second transition section; 123-arc section; 13-third part;

[0074] 20-support device; 21-first shell; 211-first slide bar; 22-second shell; 23-rotating shaft mechanism; 231-support beam; 231a-second axial hole; 231b-fourth axial hole; 2311-first beam section; 2311a-first surface; 2311b-second surface; 23111-first end; 23111a-first side; 23111b-second side; 23111c-first end surface; 23111d-first recessed portion; 23111e-fifth recessed portion; 23111f-limiting space; 23111g-first positioning hole; 23111h-first mounting hole; 23111i-first limiting recessed portion; 23112-first main section; 23113-third end ;23114-second limit block;23115-third limit block;2312-second beam section;2312a-third surface;2312b-fourth surface;23121-second end;23121a-third side;23121b-fourth side;23121c-second end surface;23121d-second recessed portion;23121e-third recessed portion;23121f-second mounting hole;23121g-sixth recessed portion;23121h-seventh recessed portion;23121i-eighth recessed portion;23121j-first axial hole;23122-second main body section;23123-fourth end;23123a-third axial hole;2313-first limit block;2314-first positioning Column; 2315-connecting piece; 232-first door panel; 2321-first panel section; 2321a-fifth side; 2321b-sixth side; 2321c-third end face; 23211-fifth end; 23212-sixth end; 2322-second panel section; 2322a-seventh side; 2322b-eighth side; 2322c-fourth end face; 2322d-second limiting recess; 2322d1-main limiting recess; 2322d2-auxiliary limiting recess; 23221-seventh end; 23222-eighth end; 2323-fourth limiting block; 23231-main limiting block; 23232-auxiliary limiting block; 233-second door panel; 233a-ninth side; 233 b-the tenth side; 233c-the tenth recessed part; 233c1-the first slide; 233d-the fifth shaft hole; 233e-the sixth shaft hole; 233f-the second slide; 234-the third door plate; 2341-the third plate section; 2342-the fourth plate section; 235-the fourth door plate; 236-the first swing arm; 2361-the first slider; 237-the second swing arm; 238-the cover plate; 2381-the first cover plate; 2382-the second cover plate; 2382a-the ninth recessed part; 239-the first rotating shaft; 2391-the first shaft section; 2392-the second shaft section; 240-the third rotating shaft; 241-the fourth rotating shaft; 2411-the third shaft section; 2412-the fourth shaft section; 242-the fifth rotating shaft; 243-the second rotating shaft; DETAILED DESCRIPTION

[0075] In the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium.

[0076] In the embodiments of the present application, it should be understood that the directional terms mentioned, such as "up", "down", "left", "right", "inside", "outside", etc., are only references to the directions of the drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of the present application, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0077] In the embodiments of the present application, the terms "first", "second", "third", "fourth", "fifth", "sixth", "seventh", "eighth", "ninth", and "tenth" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined as "first", "second", "third", "fourth", "fifth", "sixth", "seventh", "eighth", "ninth", and "tenth" may explicitly or implicitly include one or more of the features.

[0078] In the embodiments of the present application, the terms "include", "comprises" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0079] In the embodiments of the present application, "and / or" is only a description of the association relationship of the associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0080] In the embodiments of the present application, it should be noted that the descriptions "vertical" and "parallel" respectively represent approximately vertical and approximately parallel within a certain error range, and the error range may be a range in which the deviation angle is less than or equal to 5°, 8° or 10° relative to absolute vertical and absolute parallel, respectively, and no specific limitation is made here.

[0081] The present application provides a folding screen device, which may be a type of electronic device with a folding screen. Under different usage requirements, the folding screen device can be unfolded to an unfolded state, folded to a folded state, or in an intermediate state between the unfolded state and the folded state. In other words, the folding screen device has at least two states, namely, an unfolded state and a folded state. In some cases, a third state may be further included, namely, an intermediate state between the unfolded state and the folded state. It can be understood that the intermediate state does not have only a unique state, and may be any one or more states in which the folding screen device is between the unfolded state and the folded state.

[0082] The folding screen device includes but is not limited to mobile phones, tablet personal computers, personal digital assistants (PDAs), handheld devices with wireless communication functions, computing devices, vehicle-mounted devices, wearable devices, virtual reality (VR) terminal devices, augmented reality (AR) terminal devices, wireless terminals in industrial control, wireless terminals in self-driving, wireless terminals in remote medical, wireless terminals in smart grids, wireless terminals in transportation safety, wireless terminals in smart cities, wireless terminals in smart homes, and other mobile terminals or fixed terminals. The form of the folding screen device in the embodiments of the present application is not specifically limited.

[0083] See also Figure 1 and Figure 2 , Figure 1 A three-dimensional diagram of a folding screen device 100 in an unfolded state provided in some embodiments of the present application, Figure 2 for Figure 1 A schematic diagram of a partial decomposition structure of the folding screen device 100 is shown. This embodiment and the following embodiments are exemplified by taking the folding screen device 100 as a handheld device with a wireless communication function, and the handheld device with a wireless communication function may be, for example, a mobile phone.

[0084] The folding screen device 100 is approximately in the shape of a rectangular flat plate in the unfolded state. In order to facilitate the description of the embodiments below, an XYZ coordinate system is established for the folding screen device 100 in the unfolded state, and the length direction of the folding screen device 100 is defined as the X-axis direction, the width direction of the folding screen device 100 is the Y-axis direction, and the thickness direction of the folding screen device 100 is the Z-axis direction. It can be understood that the coordinate system setting of the folding screen device 100 can be flexibly set according to actual needs, and no specific limitation is made here. In some other embodiments, the shape of the folding screen device 100 can also be a square flat plate, a circular flat plate, an elliptical flat plate, and so on.

[0085] The folding screen device 100 includes a folding screen 10 and a supporting device 20 .

[0086] The foldable screen 10 is used to display information such as images and videos. The foldable screen 10 can be an organic light-emitting diode (OLED) screen, a micro organic light-emitting diode (micro organic light-emitting diode) screen, a quantum dot light emitting diode (QLED) screen, a liquid crystal display (LCD), and the like.

[0087] The folding screen 10 has a display area for displaying image information, and the display area of ​​the folding screen 10 is exposed to present images, videos and other information to the user. The folding screen 10 includes a first part 11, a second part 12 and a third part 13 connected in sequence, that is, the second part 12 is connected between the first part 11 and the third part 13. Figure 1 and Figure 2 In the illustrated embodiment, when the folding screen 10 is in the unfolded state, the first part 11, the second part 12 and the third part 13 are arranged in sequence along the X-axis direction, so that the folding screen device 100 is folded in the horizontal direction. In some other embodiments, when the folding screen 10 is in the unfolded state, the first part 11, the second part 12 and the third part 13 can also be arranged in sequence along the Y-axis direction. In this way, the folding screen device 100 is folded in the longitudinal direction. When the folding screen 10 is in the unfolded state, a large screen display can be achieved to provide users with richer information and bring users a better user experience.

[0088] At least the second portion 12 of the folding screen 10 is a flexible screen structure. In this way, the second portion 12 can be bent and deformed after being subjected to an external force, so that the folding screen 10 is Figure 1The unfolded state shown is folded to the folded state. The first part 11 and the third part 13 of the folding screen 10 can be a flexible screen structure, or a hard screen structure, or partly a flexible screen structure and partly a hard screen structure, which is not specifically limited here.

[0089] See also Figure 3 , Figure 3 for Figure 1 The schematic diagram of the structure of the folding screen device 100 shown in the figure is in a folded state, and the folding screen 10 in the folding screen device 100 is also in a folded state. The first part 11 and the third part 13 of the folding screen 10 are approximately parallel and opposite to each other, that is, the angle between the first part 11 and the third part 13 is 360° or approximately 360°. In this state, the folding screen device 100 is small in size and easy to carry, and a small screen display can be realized by using one of the first part 11 and the third part 13.

[0090] When the foldable screen 10 is in the folded state, please continue to refer to Figure 3 , the second part 12 is folded into a U-shape. In this form, the second part 12 includes an arc segment 123 and a first connecting segment 121 and a second connecting segment 122 located on opposite sides of the arc segment 123. The first connecting segment 121 is connected between the arc segment 123 and the first part 11. The second connecting segment 122 is connected between the arc segment 123 and the third part 13. The distance between one end of the first connecting segment 121 connecting the first part 11 and one end of the second connecting segment 122 connecting the third part 13 is the first distance, and the distance between one end of the first connecting segment 121 connecting the arc segment 123 and one end of the second connecting segment 122 connecting the arc segment 123 is the second distance, and the second distance is equal to the first distance. In some other embodiments, when the folding screen device 100 is in a folded state, the second part 12 of the folding screen 10 can also be folded into other shapes according to actual needs, and this application does not limit this.

[0091] Please continue reading Figure 3 , the support device 20 is used to carry the folding screen 10. When the folding screen device 100 is in the folded state, the folding screen 10 can be located outside the support device 20, and the folding screen device 100 is an external folding folding screen device. In some other embodiments, when the folding screen device 100 is in the folded state, the support device 20 can also be protected outside the folding screen 10, and the folding screen 10 is invisible to the user, and the folding screen device 100 is an internal folding folding screen device.

[0092] See also Figure 1-Figure 3The supporting device 20 includes a first shell 21, a second shell 22 and a rotating shaft mechanism 23. The first shell 21 carries the first part 11, and the second shell 22 carries the third part 13. The rotating shaft mechanism 23 is connected between the first shell 21 and the second shell 22, and carries the second part 12, that is, the second part 12 is supported on the rotating shaft mechanism 23.

[0093] The first shell 21 may include a middle frame and a back cover connected together. The first part 11 of the folding screen 10 may be fixed to the middle frame of the first shell 21, that is, the first part 11 is fixed to the first shell 21, and the back cover is located on the side of the middle frame away from the first part 11, and the back cover may be replaced with a display screen (such as an LCD display screen). A accommodating cavity is formed between the middle frame and the back cover, which is used to accommodate electronic components such as a motherboard, a camera module, and a battery. On this basis, the first shell 21 may be connected to the hinge mechanism 23 with the aid of the middle frame, or may be connected to the hinge mechanism 23 with the aid of the back cover. The following embodiments are described by taking the example of the first shell 21 being connected to the hinge mechanism 23 with the aid of the middle frame.

[0094] Similarly, the second shell 22 may also include a middle frame and a back cover connected together, and the third part 13 of the folding screen 10 may be fixed to the middle frame of the second shell 22, that is, the third part 13 is fixed to the second shell 22, and the back cover is located on the side of the middle frame away from the third part 13, and the back cover may also be replaced by a display screen (such as an LCD display screen). A accommodating cavity is formed between the middle frame and the back cover, and the accommodating cavity is used to accommodate electronic components such as sub-boards, speaker modules, arrays, batteries, etc. On this basis, the second shell 22 can be connected to the hinge mechanism 23 with the help of the middle frame, and can also be connected to the hinge mechanism 23 with the help of the back cover. The following embodiments are described by taking the second shell 22 being connected to the hinge mechanism 23 with the help of the middle frame as an example.

[0095] In some other embodiments, the supporting device 20 may further include a third shell, which is rotatably connected to the first shell 21 or the second shell 22 on a side away from the rotating shaft mechanism 23. At the same time, the folding screen 10 may further include a fourth part, which is connected to the first part or the second part. The fourth part is supported on the third shell, that is, the fourth part is fixed to the third shell. In this way, the folding screen device 100 can be folded multiple times, which is conducive to further reducing the volume of the folding screen device 100 in the folded state.

[0096] The hinge mechanism 23 is used to realize the rotatable connection between the second shell 22 and the first shell 21 to support the folding screen 10 to fold between the unfolded state and the folded state. Specifically, the hinge mechanism 23 can switch between the unfolded state and the folded state. When the hinge mechanism 23 is in the unfolded state, the folding screen 10 and the support device 20 including the hinge mechanism 23 are also in the unfolded state, that is, the folding screen device 100 is in the unfolded state, and the angle between the first shell 21 and the second shell 22, and the angle between the first part 11 and the third part 13 are approximately 180°. When the hinge mechanism 23 is in the folded state, the folding screen 10 and the support device 20 including the hinge mechanism 23 are also in the folded state, that is, the folding screen device 100 is in the folded state, and the angle between the first shell 21 and the second shell 22, and the angle between the first part 11 and the third part 13 are approximately 360°.

[0097] Please continue reading Figure 4 and Figure 5 , Figure 4 for Figure 2 A structural schematic diagram of the folding screen device 100 in which the hinge mechanism 23 is in an unfolded state is shown. Figure 5 for Figure 4 The structure diagram of the rotating shaft mechanism 23 in the folded state is shown in FIG. The rotating shaft mechanism 23 includes a support beam 231 , a first door panel 232 , a second door panel 233 , a third door panel 234 , a fourth door panel 235 , a first swing arm 236 and a second swing arm 237 .

[0098] The length direction of the support beam 231 is parallel to the Y-axis direction. One end of the first swing arm 236 is rotatably connected to one side of the support beam 231, and the other end is slidably connected to the second door panel 233. The first door panel 232 is located between the second door panel 233 and the support beam 231, and the first door panel 232 is rotatably connected to the second door panel 233, and the first door panel 232 is rotatably connected to the support beam 231. Similarly, one end of the second swing arm 237 is rotatably connected to the other side of the support beam 231, and the other end of the second swing arm 237 is slidably connected to the fourth door panel 235. The third door panel 234 is located between the fourth door panel 235 and the support beam 231, and the third door panel 234 is rotatably connected to the fourth door panel 235, and the third door panel 234 is rotatably connected to the support beam 231. The second door panel 233 is used to be connected to the first shell 21, and the fourth door panel 235 is used to be connected to the second shell 22.

[0099] When the first housing 21 rotates under the action of an external force, the second door panel 233 and the first swing arm 236 rotate with the first housing 21, thereby driving the first door panel 232 to rotate. When the second housing 22 rotates under the action of an external force, the fourth door panel 235 and the second swing arm 237 rotate with the second housing 22, thereby driving the third door panel 234 to rotate, thereby realizing relative rotation between the first housing 21 and the second housing 22, so that the folding screen device 100 can be switched between the unfolded state and the folded state.

[0100] Figure 4 and Figure 5 In the illustrated embodiment, the support beam 231, the first door panel 232, the second door panel 233, the third door panel 234 and the fourth door panel 235 are all integral structural members extending in the Y-axis direction and having the same length as the width of the folding screen device 100. Therefore, the lengths of the support beam 231, the first door panel 232, the second door panel 233, the third door panel 234 and the fourth door panel 235 are relatively large. In the actual processing process, the support beam 231, the first door panel 232, the second door panel 233, the third door panel 234 and the fourth door panel 235 can be an integral structural member formed by metal injection molding and shaping processes. Since each component generally has a processing tolerance, the larger the size of the component, the larger the processing tolerance, the worse the precision of the component, and the worse the flatness of the surface of the component used to support the folding screen, and the more difficult it is to ensure that the gap between adjacent components reaches the design value, the user touches and presses the folding screen, which is easy to cause the folding screen to be deformed and damaged, resulting in a spot-like display problem, affecting the display effect of the folding screen. Based on this, the support beam 231 can be made into a split structure and fixedly connected by welding to achieve the effect of improving precision by reducing the size of a single component. However, this method is costly, and due to the existence of welding stress and deformation, the flatness of the surface of the component used to support the folding screen is still poor, which also affects the display effect of the folding screen.

[0101] To solve the above problems, see Figure 6 , Figure 6 for Figure 2 Another structural schematic diagram of the folding screen device 100 is shown in which the hinge mechanism 23 is in an unfolded state. Figure 7 for Figure 6 The exploded structural diagram of the rotating shaft mechanism 23 is shown. The rotating shaft mechanism 23 includes a support beam 231, a first door panel 232, a second door panel 233, a third door panel 234, a fourth door panel 235, a first swing arm 236, a second swing arm 237 and a cover panel 238. It can be understood that Figure 6 and Figure 7 Only some components of the rotating shaft mechanism 23 are schematically shown, and the actual shape, size, position and structure of these components are not subject to the present invention. Figure 6 and Figure 7In some other embodiments, the hinge mechanism 23 may not include the third door panel 234, the fourth door panel 235, the second swing arm 237, the cover panel 238, etc.

[0102] The support beam 231 provides a position reference. The support beam 231 is in the shape of a long strip. The length direction of the support beam 231 is parallel to the Y-axis direction, the width direction of the support beam 231 is parallel to the X-axis direction, and the thickness direction of the support beam 231 is parallel to the Z-axis. The support beam 231 is used to realize the assembly of other components in the hinge mechanism 23, and is used to carry a part of the second part 12 of the folding screen 10. The material of the support beam 231 can be metal, which is processed by a metal injection process. In this way, the production efficiency of the support beam 231 is high, and the production and assembly efficiency of the hinge mechanism 23 is also high. In some other embodiments, the material of the support beam 231 can also be plastic, which is processed by an injection molding process. The outer contour shape of the cross section of the support beam 231 (that is, the cross section perpendicular to the Y-axis direction) includes but is not limited to a rectangle, a hexagon, an octagon, a decagon, a trapezoid or a special shape.

[0103] See also Figure 7 and Figure 8 , Figure 8 for Figure 7 The partial structural diagram of the support beam 231 of the rotating shaft mechanism 23 is shown. The support beam 231 includes a first beam section 2311 and two second beam sections 2312. The two second beam sections 2312 are arranged at intervals along the length direction of the support beam 231 and are respectively connected to the two ends of the first beam section 2311. In some other embodiments, the number of the second beam section 2312 can also be 1, and the number of the first beam section 2311 can be 2. The two first beam sections 2311 are arranged at intervals along the length direction of the support beam 231 and are respectively connected to the two ends of the second beam section 2312. In some other embodiments, the number of the first beam section 2311 and the second beam section 2312 can also be one, and one end of the first beam section 2311 is connected to one end of the second beam section 2312.

[0104] See also Fig. 9 , Fig. 9 for Figure 8A schematic diagram of the structure of the first beam section 2311 of the support beam 231 is shown. The first beam section 2311 is in the shape of an elongated strip, and the length direction, width direction and thickness direction of the first beam section 2311 are respectively the same as the length direction, width direction and thickness direction of the support beam 231, and the first beam section 2311 includes a first end 23111, a first main section 23112 and a third end 23113 which are sequentially connected along the length direction thereof. The first beam section 2311 has a first surface 2311a and a second surface 2311b which are opposite to each other, and the first surface 2311a and the second surface 2311b are arranged along the thickness direction of the first beam section 2311, wherein the first surface 2311a is substantially a plane, and is used to support a part of the second part of the folding screen.

[0105] Based on this, the first end portion 23111 has a first side surface 23111a and a second side surface 23111b facing each other and a first end surface 23111c. The first side surface 23111a forms a partial area of ​​the first surface 2311a, the second side surface 23111b forms a partial area of ​​the second surface 2311b, the first end surface 23111c faces away from the first main body section 23112 and forms an end surface of the first beam section 2311. The first end surface 23111c can be directly connected to the first side surface 23111a and the second side surface 23111b, or indirectly connected to the first side surface 23111a and the second side surface 23111b through a chamfered surface or a rounded surface.

[0106] On this basis, the first side surface 23111a is provided with a first recessed portion 23111d recessed toward the second side surface 23111b, the first recessed portion 23111d penetrates the first end surface 23111c along the length direction of the first beam section 2311, and the first recessed portion 23111d also penetrates the two side surfaces of the first beam section 2311 along the width direction of the first beam section 2311. The side wall surface of the first recessed portion 23111d facing away from the first main body section 23112 is provided with a first position limiting recessed portion 23111i recessed toward the first main body section 23112, and the first position limiting recessed portion 23111i penetrates the first side surface 23111a. The bottom wall of the first recessed portion 23111d is provided with a fifth recessed portion 23111e recessed toward the second side surface 23111b, the fifth recessed portion 23111e penetrates the first end surface 23111c, and the inner wall of the fifth recessed portion 23111e is an arc surface, and the center line of the circle is parallel to the Y-axis direction. The bottom wall of the first recessed portion 23111d is also provided with a first positioning hole 23111g and a first mounting hole 23111h, the first positioning hole 23111g and the first mounting hole 23111h are arranged at intervals along the length direction of the first beam section 2311, and both penetrate the second side surface 23111b along the thickness direction of the first beam section 2311.

[0107] A second limit block 23114 and a third limit block 23115 are provided on the bottom wall surface of the first recessed portion 23111d, which are spaced apart along the first direction. The second limit block 23114 and the third limit block 23115 are connected to the side wall surface of the first recessed portion 23111d which is opposite to the first main body section 23112. The second limit block 23114, the third limit block 23115 and the bottom wall surface of the first recessed portion 23111d enclose a limiting space 23111f, wherein the first direction is the width direction of the support beam 231, that is, the first direction is parallel to the first side surface 23111a and perpendicular to the length direction of the support beam 231.

[0108] In some other embodiments, the first recessed portion 23111d may not penetrate the two side surfaces of the first beam section 2311 along the width direction of the first beam section 2311. In some other embodiments, the first position-limiting recessed portion 23111i may not penetrate the first side surface 23111a. In some other embodiments, the second position-limiting block 23114 and the third position-limiting block 23115 may not be connected to the side wall surface of the first recessed portion 23111d. In some other embodiments, the first positioning hole 23111g may not penetrate the second side surface 23111b.

[0109] See also Fig.10 , Fig.10 for Figure 8 A schematic diagram of the structure of the second beam section 2312 of the support beam 231 is shown. The second beam section 2312 is in the shape of an elongated strip, and the length direction, width direction and thickness direction of the second beam section 2312 are respectively the same as the length direction, width direction and thickness direction of the support beam 231, and the second beam section 2312 includes a second end 23121, a second main section 23122 and a fourth end 23123 which are sequentially connected along the length direction thereof. The second beam section 2312 has a third surface 2312a and a fourth surface 2312b which are opposite to each other, and the third surface 2312a and the fourth surface 2312b are arranged along the thickness direction of the second beam section 2312, wherein the third surface 2312a is substantially planar and coplanar with the first surface 2311a, and is used to support a part of the second part of the folding screen.

[0110] Based on this, the second end portion 23121 has a third side surface 23121a and a fourth side surface 23121b facing each other and a second end surface 23121c, the third side surface 23121a forms a partial area of ​​the third surface 2312a, the fourth side surface 23121b forms a partial area of ​​the fourth surface 2312b, the second end surface 23121c faces away from the second main body section 23122 and forms an end surface of the second beam section 2312, and the second end surface 23121c can be directly connected to the third side surface 23121a and the fourth side surface 23121b, or indirectly connected to the third side surface 23121a and the fourth side surface 23121b through a chamfered surface or a rounded surface.

[0111] On this basis, the fourth side surface 23121b is further provided with a second recessed portion 23121d and a third recessed portion 23121e spaced apart along the first direction. The second recessed portion 23121d penetrates the second end surface 23121c and penetrates one side surface of the second beam section 2312 in a direction away from the third recessed portion 23121e; the third recessed portion 23121e penetrates the second end surface 23121c and penetrates another side surface of the second beam section 2312 in a direction away from the second recessed portion 23121d. In some other embodiments, the second recessed portion 23121d and the third recessed portion 23121e may not penetrate the second end surface 23121c and the corresponding side surfaces.

[0112] The fourth side surface 23121b is further provided with a sixth recessed portion 23121g, a seventh recessed portion 23121h and an eighth recessed portion 23121i recessed toward the third side surface 23121a, the seventh recessed portion 23121h is located between the sixth recessed portion 23121g and the eighth recessed portion 23121i, the sixth recessed portion 23121g is located between the seventh recessed portion 23121h and the second end surface 23121c, the sixth recessed portion 23121g penetrates the side wall surface of the seventh recessed portion 23121h facing away from the second end surface 23121c, and the eighth recessed portion 23121i penetrates the side wall surface of the seventh recessed portion 23121h facing the second end surface 23121c. The inner wall surfaces of the sixth recessed portion 23121g and the eighth recessed portion 23121i are both arc surfaces, and the center lines of the two are collinear and parallel to the Y axis. In some other embodiments, the seventh recessed portion 23121h and the eighth recessed portion 23121i may also be provided in the second main body segment 23122 .

[0113] Please continue reading Fig. 9 and Fig.10, the second end surface 23121c is provided with a first limit block 2313, and the fourth side surface 23121b is provided with a first positioning column 2314, and the first positioning column 2314 extends along the thickness direction of the second beam section 2312. In some examples, the first limit block 2313 and the first positioning column 2314 can be integrally formed with the second beam section 2312, that is, the first limit block 2313, the first positioning column 2314 and the second beam section 2312 are a structural component as a whole. In other examples, the first limit block 2313 and the first positioning column 2314 can also be provided on the second beam section 2312 by bonding, clamping, threaded connection, etc. The fourth side surface 23121b also has a second mounting hole 23121f, and the second mounting hole 23121f penetrates the third side surface 23121a along the thickness direction of the second beam section 2312. In other embodiments, the second mounting hole 23121f may not penetrate the third side surface 23121a.

[0114] A first axial hole 23121j is formed at one end of the second end portion 23121 along the first direction, and a third axial hole 23123a is formed at one end of the fourth end portion 23123 along the first direction. The third axial hole 23123a is coaxial with the first axial hole j.

[0115] See also Figure 11-Figure 12 , Fig.11 for Figure 8 A cross-sectional structural diagram of the support beam 231 at line AA is shown. Fig.12 for Figure 8 A cross-sectional structure diagram of the support beam 231 at line BB is shown, wherein: Fig.11 and Fig.12 The first beam section 2311 in Fig. 9 The first beam section 2311 and the second beam section 2312 are shown as Fig.10 The second beam section 2312 shown in FIG. A portion of the second end portion 23121 of the second beam section 2312 is located in the first recessed portion 23111d of the first beam section 2311, the fourth side surface 23121b of the second end portion 23121 faces the bottom wall surface of the first recessed portion 23111d, and the first stop block 2313 is accommodated and matched in the first stop recessed portion 23111i. The inner wall surface of the sixth recessed portion 23121g and the inner wall surface of the fifth recessed portion 23111e are surrounded by the second axial hole 231a. In some other embodiments, when the seventh recessed portion 23121h and the eighth recessed portion 23121i are provided in the second main body section 23122, the entirety of the second end portion 23121 is located in the first recessed portion 23111d of the first beam section 2311, that is, at least a portion of the second end portion 23121 is located in the first recessed portion 23111d.

[0116] On this basis, the support beam 231 further includes a connecting piece 2315, and the first end 23111 and the second end 23121 located in the first recessed portion 23111d are connected by the connecting piece 2315. Specifically, the connecting piece 2315 can be a fastener, and the fastener includes but is not limited to bolts, screws, studs, etc., and a fastener is inserted through a first mounting hole 23111h and a second mounting hole 23121f and is threadedly screwed with the first mounting hole 23111h and / or a second mounting hole 23121f. In some other embodiments, the connecting piece 2315 can also be an adhesive, and the adhesive is bonded between the fourth side surface 23121b and the bottom wall surface of the first recessed portion 23111.

[0117] In some other embodiments, see Fig.13 and Fig.14 , Fig.13 Partial structural diagram of the support beam 231 provided in some other embodiments of the present application, Fig.14 for Fig.13 The cross-sectional structure diagram of the support beam 231 at the CC line is shown. Fig.13 and Fig.14 The embodiment shown is Figure 8 and Fig.11 The difference of the illustrated embodiment is that the first limiting block 2313 is arranged on the side wall surface of the first recessed portion 23111d facing away from the first main body section 23112 , and the first limiting recessed portion 23111i is arranged on the second end surface 23121c and recessed toward the second main body section 23122 .

[0118] In this way, by providing a first limit block 2313 on one of the second end surface 23121c and the side wall surface of the first recessed portion 23111d, and providing a first limit recessed portion 23111i on the other, the first limit block 2313 is accommodated and matched in the first limit recessed portion 23111i, so that the first limit block 2313 and the first limit recessed portion 23111i can at least limit the movement of the first beam section 2311 relative to the second beam section 2312 along the Y-axis direction (the length direction of the support beam 231) and the X-axis direction (the width direction of the support beam 231); by making at least a part of the second end portion 23121 In the first limiting recess 23111d, the first beam section 2311 can at least be limited to move relative to the second beam section 2312 along the Z-axis direction (the thickness direction of the support beam 231) and rotate around the X-axis; the first limiting block 2313 and the connecting member 2315 can work together to limit the first beam section 2311 from rotating relative to the second beam section 2312 around the Y-axis and the Z-axis, thereby achieving the limiting and fixing of the first beam section 2311 relative to the second beam section 2312, ensuring the reliability of the connection between the first beam section 2311 and the second beam section 2312, and facilitating the rapid assembly of the first beam section 2311 and the second beam section 2312.

[0119] In addition, since the support beam 231 is a split structure formed by connecting the first beam segment 2311 and the second beam segment 2312, the length dimensions of the first beam segment 2311 and the second beam segment 2312 are relatively small. During actual processing and production, the processing tolerance is relatively small and the precision is relatively high. The surface flatness of the first beam segment 2311 and the second beam segment 2312 used to support the folding screen is relatively good, and thus the surface flatness of the support beam 231 as a whole used to support the folding screen is relatively good. Therefore, the overall precision of the hinge mechanism 23 is relatively high, which ensures the display effect of the folding screen. In addition, the support beam 231 formed in this way has a relatively low cost and a relatively high yield.

[0120] Please return to Fig.10 and Fig.12 , when the first limit block 2313 is arranged on the second end face 23121c, the surface of the bottom wall of the first limit block 2313 facing the first recessed portion 23111d is coplanar with the fourth side face 23121b, and the surface of the bottom wall of the first limit block 2313 facing away from the first recessed portion 23111d is coplanar with the third side face 23121a. In this way, the first limit block 2313 is arranged on the second end face 23121c, which is convenient for designing and processing the first limit block 2313. In addition, the height of the first limit block 2313 in the thickness direction (Z-axis direction) of the support beam 231 is the same as the thickness of the second end portion 23121, so that the strength of the first limit block 2313 can be as large as possible, thereby ensuring the strength of the second beam section 2312, and further ensuring the overall strength of the rotating shaft mechanism 23.

[0121] See also Fig.10 and Fig.11 , along the direction from the opening of the first limiting recess 23111i to the bottom wall, the width of at least a portion of the first limiting block 2313 in the first direction (X-axis direction) is greater than the width of the opening of the first limiting recess 23111i in the first direction. At this time, when assembling the first beam section 2311 and the second beam section 2312, it is necessary to point from the fourth side surface 23121b to the third side surface 23121a, overlap the first beam section 2311 on the second beam section 2312, and then fix the two together through the connecting member 2315.

[0122] In this way, the first limit block 2313 and the first limit recess 23111i can not only limit the first beam section 2311 from moving along the length direction of the support beam 231 toward the direction approaching the second beam section 2312, but also limit the first beam section 2311 from moving along the length direction of the support beam 231 toward the direction away from the second beam section 2312, thereby realizing the precise positioning of the first beam section 2311 and the second beam section 2312 along the length direction of the support beam 231, and preventing the connecting member 2315 from being a fastener and the first mounting hole 23111h from being a light hole, so that when the folding screen device is subjected to impact force, the first beam section 2311 moves relative to the second beam section 2312, thereby affecting the reliability of the hinge mechanism 23, reducing the supporting performance of the folding screen, and affecting the display effect of the screen.

[0123] Specifically, the cross-sectional profile of the first limit block 2313 in the first plane is a trapezoid, and the bottom side of the trapezoid close to the bottom wall of the first limit recess 23111i is the lower bottom side, that is, the side length of the bottom wall of the trapezoid close to the first limit recess 23111i is greater than the side length of the bottom of the trapezoid connected to the second end face 23121c. Among them, the first plane is parallel to the aforementioned first side surface 23111a, that is, the first plane is perpendicular to the thickness direction (Z-axis direction) of the support beam 231 and parallel to the XY plane. In this way, the first limit block 2313 and the first limit recess 23111i are dovetail mortise and tenon structures, which can realize the precise positioning of the first beam section 2311 and the second beam section 2312 in the Y-axis direction, and can also realize the precise positioning of the first beam section 2311 relative to the second beam section 2312 rotating around the Z-axis direction, further improving the reliability of the rotating shaft mechanism 23. In some other embodiments, the cross-sectional profile of the first limit block 2313 in the first plane may also be in other shapes, such as a portion of a teardrop shape, a portion of an ellipse, a portion of a circle whose center is located on the side of the second end face 23121c away from the second main body section 23122, other polygonal shapes, etc.

[0124] The trapezoid can be an isosceles trapezoid or a non-isosceles trapezoid. The angle between any waist of the trapezoid and the lower base is greater than or equal to 85° and less than or equal to 89°. For example, the angle between any waist of the trapezoid and the lower base can be 85° or 86° or 87° or 88° or 89°. In this way, the precise positioning performance of the aforementioned dovetail mortise and tenon structure can be guaranteed, and it can also be convenient for demolding when the first beam section 2311, the second beam section 2312, and the first limit block 2313 are formed by metal injection processing. When the angle between any waist of the trapezoid and the lower base is greater than 89°, the precise positioning performance cannot be guaranteed. When the angle between any waist of the trapezoid and the lower base is less than 85°, it is difficult to disengage the mold from the beam section.

[0125] In some other embodiments, along the direction from the opening of the first limiting recess 23111i to the bottom wall surface, the width of the first limiting block 2313 in the first direction (X-axis direction) may also remain unchanged or gradually decrease. In some examples, the first limiting block 2313 may be a rectangular convex block. In other examples, the first limiting block 2313 may also be an arc-shaped convex block.

[0126] On the basis of the above, please continue to refer to Figure 8 and Fig.12 The support beam 231 includes the aforementioned first positioning column 2314, Fig.10 and Fig.12 In the illustrated embodiment, the first positioning column 2314 is disposed on the fourth side surface 23121b. The first positioning column 2314 can be disposed on the fourth side surface 23121b by bonding or welding. The first positioning column 2314 can also be formed integrally with the second beam section 2312, which is not limited in the present application. The first positioning column 2314 is accommodated and matched in the first positioning hole 23111g disposed in the first beam section 2311. In this way, the first positioning column 2314 can achieve accurate positioning of limiting the rotation of the first beam section 2311 relative to the second beam section 2312 around the X-axis and around the Y-axis. In addition, when the number of the second beam sections 2312 is two, the first positioning columns 2314 respectively disposed on the two second beam sections 2312 can also achieve accurate positioning of limiting the movement of the two second beam sections 2312 relative to the first beam section 2311 along the Y-axis, further ensuring the reliability of the rotating shaft mechanism 23. In some other embodiments, the first positioning column 2314 may also be disposed on the bottom wall of the first recessed portion 23111d, and the fourth side surface 23121b has a first positioning hole. In some other embodiments, the support beam 231 may not include the first positioning column 2314.

[0127] Please continue reading Figure 8 and Fig.12 , the end surface of the first positioning column 2314 away from the fourth side surface 23121b is flush with the second side surface 23111b of the first beam section 2311. In this way, the height of the first positioning column 2314 can be as large as possible to ensure the strength of the first positioning column 2314, and the first positioning column 2314 can be prevented from protruding from the second side surface 23111b to interfere with other components of the rotating shaft mechanism 23.

[0128] See also Fig.10 and Fig.12In the case where the first positioning column 2314 is arranged on the fourth side surface 23121b and the first limiting block 2313 is arranged on the second end surface 23121c, a part of the first positioning column 2314 can protrude from the second end surface 23121c and be connected to the first limiting block 2313. In some examples, the width of the first positioning column 2314 along the first direction can be less than or equal to the width of the portion of the first limiting block 2313 connected to the second end surface 23121c in the first direction. In this way, the distance between the first positioning column 2314 and the first limiting block 2313 is relatively close, which can prevent the distance between the two from being far and the processing tolerance from being large, making it difficult for the two to be simultaneously accommodated and matched in the first positioning hole 23111g and the first limiting recess 23111i. Therefore, the assembly difficulty of the first beam section 2311 and the second beam section 2312 is reduced. In addition, a portion of the first positioning column 2314 is connected to the first limiting block 2313, which can improve the strength of the connection between the first positioning column 2314, the first limiting block 2313 and the second beam section 2312, thereby improving the overall strength of the rotating shaft mechanism 23 and ensuring the reliability of the rotating shaft mechanism 23. In some other embodiments, the first positioning column 2314 and the first limiting block 2313 can also be arranged at intervals.

[0129] See also Fig.15 and Fig.16 , Fig.15 for Figure 8 Another structural schematic diagram of the second beam section 2312 of the support beam 231 is shown. Fig.16 for Figure 8 Another cross-sectional structure diagram of the support beam 231 at line BB is shown, wherein: Fig.16 The second beam section 2312 in Fig.15 The second beam section 2312 is shown. Fig.15 and Fig.16 The embodiment shown is Fig.10 and Fig.12 The difference of the illustrated embodiment is that the orthographic projection of a portion of the first positioning column 2314 protruding from the second end surface 23121c in the first plane overlaps with the orthographic projection of the first limiting block 2313 in the first plane. Correspondingly, a portion of the contour of the orthographic projection of the first positioning hole 23111g in the first plane overlaps with the contour of the orthographic projection of the first limiting recess 23111i in the first plane. Fig.15 and Fig.16 In the illustrated embodiment, the first positioning column 2314 is cylindrical, the first limiting block 2313 is semi-cylindrical, and the diameter of the first limiting block 2313 is the same as the diameter of the first positioning column 2314. In other embodiments, the first positioning column may also be in a rectangular column, an elliptical column, etc., and correspondingly, the first limiting block 2313 may also be in a partial rectangular column, a partial elliptical column, etc.

[0130] In this way, the cross-sectional shape and size of the portion of the first positioning column 2314 protruding from the second end surface 23121c are consistent with the cross-sectional shape and size of the first limiting block 2313, which facilitates the design and processing of the first positioning column 2314 and the first limiting block 2313, and correspondingly, the design and processing of the first positioning hole 23111g and the first limiting recess 23111i are also facilitated. In addition, the difficulty of assembling the first beam section 2311 and the second beam section 2312 is reduced.

[0131] Based on the above, please refer back to Figure 8 and Fig.11 , the part of the second end portion 23121 between the second recessed portion 23121d and the third recessed portion 23121e is accommodated and matched in the aforementioned limiting space 23111f. In this way, the cooperation between the second end portion between the second recessed portion 23121d and the third recessed portion 23121e and the limiting space 23111f can also achieve at least limiting the movement of the first beam section 2311 relative to the second beam section 2312 along the Y-axis direction (the length direction of the support beam 231) and the X-axis direction (the width direction of the support beam 231), ensuring the reliability of the limiting between the first beam section 2311 and the second beam section 2312, and can also compensate for the limiting strength of the first limiting block 2313, preventing the first beam section 2311 and the second beam section 2312 from being subjected to impact forces for multiple times, due to the first limiting block 2313 being a cantilever structure and being easily deformed, resulting in a decrease in the assembly accuracy between the first beam section 2311 and the second beam section 2312, thereby reducing the overall reliability of the rotating shaft mechanism 23. In some other embodiments, the fourth side surface 23121b of the second end portion 23121 may not have the second recess 23121d and the third recess 23121e, and the second limit block 23114 and the third limit block 23115 may not be set on the bottom wall surface of the first recess 23111.

[0132] On the basis of the above, when the number of second beam segments 2312 is two, the connection structure between the second end 23121 of the second second beam segment 2312 and the third end 23113 of the first beam segment 2311 can refer to the connection structure between the second end 23121 of the first second beam segment 2312 and the first end 23111 of the first beam segment 2311, and will not be repeated here.

[0133] In some examples, the two second beam segments 2312 and the connection structure with the first beam segment 2311 can be symmetrical about the first symmetry plane or the second symmetry plane, the first symmetry plane is a plane perpendicular to the length direction of the support beam 231, and the second symmetry plane is a plane perpendicular to the width direction of the support beam 231. In other examples, the two second beam segments 2312 and the connection structure with the first beam segment 2311 can also be centrally symmetrical about the central axis, that is, the support beam 231 is rotated 180° around the central axis and coincides with the original structure, and the central axis is the intersection of the first symmetry plane and the second symmetry plane. In this way, the structures of the two second beam segments 2312 can be exactly the same, the second beam segments 2312 can be modularized, the consistency and accuracy of the second beam segments 2312 can be improved, so as to reduce the types of parts of the support beam 231 and reduce costs. In some other embodiments, the support beam 231 may not be a symmetrical structure, and the structures of the two second beam segments 2312 and the connection structure with the first beam segment 2311 may also be different.

[0134] See also Figure 7 and Fig.17 , Fig.17 for Figure 8 The first door panel 232 is shown as a partial structural diagram. The first door panel 232 is arranged on one side of the support beam 231 along the aforementioned first direction. The first door panel 232 includes a first panel section 2321 and two second panel sections 2322. The two second panel sections 2322 are arranged at intervals along the length direction of the support beam 231 and are respectively detachably connected to the two ends of the first panel section 2321. One first panel section 2321 is arranged on one side of a first beam section 2311 along the aforementioned first direction, and one second panel section 2322 is arranged on one side of a second beam section 2312 along the aforementioned first direction. In some other embodiments, when the number of the second beam section 2312 is 1, the number of the first beam section 2311 is 2, and the two first beam sections 2311 are respectively connected to the two ends of the second beam section 2312, the number of the first panel section 2321 may also be 2, the number of the second panel section 2322 is 1, and the two first panel sections 2321 are respectively detachably connected to the two ends of the second panel section 2322. In some other embodiments, when the number of the first beam section 2311 and the second beam section 2312 are both one, the number of the first plate section 2321 and the second plate section 2322 can also be one, and the two can be detachably connected. In some other embodiments, the first plate section 2321 and the second plate section 2322 can also be integrally formed, that is, the first door panel 232 is an integral structural member.

[0135] See also Fig.17 and Fig.18 , Fig.18 for Fig.17The first plate section 2321 of the first door panel 232 is a schematic structural diagram. The first plate section 2321 is in the shape of a long strip. Figure 6 In the unfolded state shown, the length direction, width direction and thickness direction of the first plate segment 2321 are respectively the same as the length direction, width direction and thickness direction of the support beam 231, and the first plate segment 2321 includes a fifth end 23211 and a sixth end 23212 arranged along the length direction thereof. The first plate segment 2321 has a third end face 2321c and a fifth side face 2321a and a sixth side face 2321b opposite to each other, and the fifth side face 2321a and the sixth side face 2321b are arranged along the thickness direction of the first plate segment 2321.

[0136] The fifth side surface 2321a is roughly arc-shaped, the center line of the fifth side surface 2321a is located on the side of the sixth side surface 2321b that is opposite to the fifth side surface 2321a and is parallel to the length direction of the support beam 231, the fifth side surface 2321a is used to support a part of the second part of the folding screen, the third end surface 2321c is an end surface of the fifth end 23211, the third end surface 2321c is opposite to the sixth end 23212, and the third end surface 2321c can be directly connected to the fifth side surface 2321a and the sixth side surface 2321b, or indirectly connected to the fifth side surface 2321a and the sixth side surface 2321b through a chamfered surface or a rounded surface. In some other embodiments, the fifth side surface 2321a can also be roughly flat.

[0137] Based on this, the third end surface 2321c is provided with a fourth limit block 2323, and the fourth limit block 2323 protrudes in a direction away from the sixth end portion 23212. In some examples, the fourth limit block 2323 can be integrally formed with the first plate segment 2321, that is, the fourth limit block 2323 and the first plate segment 2321 are an integral structural member. In other examples, the fourth limit block 2323 can also be provided on the third end surface 2321c by means of clamping, bonding, threaded connection, etc.

[0138] The fourth limit block 2323 includes a main limit block 23231 and an auxiliary limit block 23232. The profile of the cross section of the main limit block 23231 in the second plane is non-circular, and the profile of the cross section of the auxiliary limit block 23232 in the second plane is at least a part of a circle. The area of ​​the cross section of the main limit block 23231 in the second plane is greater than the area of ​​the cross section of the auxiliary limit block 23232 in the second plane, and the second plane is perpendicular to the length direction of the support beam 231.

[0139] Fig.18In the illustrated embodiment, the cross-section of the main limit block 23231 in the second plane is roughly trapezoidal, and one side of the main limit block 23231 is coplanar with the fifth side 2321a of the first plate segment 2321. Along the direction from the fifth side 2321a to the sixth side 2321b, the width of the main limit block 23231 along the second direction gradually increases, and the second direction is parallel to the fifth side and perpendicular to the length direction of the support beam 231. It should be noted that the coplanarity here means that one side of the main limit block 23231 and the fifth side 2321a are located in the same arc surface, or one side of the main limit block 23231 and the fifth side 2321a are located in the same plane. In some other embodiments, the width of the main limit block 23231 may also gradually increase and then gradually decrease, and the present application does not limit this.

[0140] On this basis, the auxiliary limit block 23232 is connected to the side of the main limit block 23231. In this case, the profile of the cross section of the auxiliary limit block 23232 in the second plane is a part of a circle. The height of the auxiliary limit block 23232 along the length direction of the support beam 231 is less than the height of the main limit block 23231 along the length direction of the support beam 231. The number of the auxiliary limit blocks 23232 can be two, symmetrically connected to both sides of the main limit block 23231. In some other embodiments, the auxiliary limit block 23232 can also be spaced apart from the main limit block 23231, and the profile of the cross section of the auxiliary limit block 23232 in the second plane is circular. In some other embodiments, the number of the auxiliary limit blocks 23232 can also be 1 or more than 3.

[0141] See also Fig.17 and Fig.19 , Fig.19 for Fig.17 The second plate section 2322 of the first door panel 232 is a schematic diagram of the structure. The second plate section 2322 is in the shape of a long strip. Figure 6 In the unfolded state shown, the length direction, width direction and thickness direction of the second plate segment 2322 are respectively the same as the length direction, width direction and thickness direction of the support beam 231, and the second plate segment 2322 includes a seventh end 23221 and an eighth end 23222 arranged along the length direction thereof. The second plate segment 2322 has a fourth end face 2322c and a seventh side face 2322a and an eighth side face 2322b opposite to each other, and the seventh side face 2322a and the eighth side face 2322b are arranged along the thickness direction of the second plate segment 2322.

[0142] Among them, the seventh side surface 2322a is roughly arc-shaped, and the seventh side surface 2322a and the fifth side surface 2321a are located in the same arc-shaped surface. The seventh side surface 2322a is used to support a part of the second part of the folding screen. The fourth end surface 2322c is an end surface of the seventh end 23221, and the fourth end surface 2322c is opposite to the eighth end 23222. The fourth end surface 2322c can be directly connected to the seventh side surface 2322a and the eighth side surface 2322b, or indirectly connected to the seventh side surface 2322a and the eighth side surface 2322b through a chamfered surface or a rounded surface. In some other embodiments, the seventh side surface 2322a can also be roughly flat, and the seventh side surface 2322a and the fifth side surface 2321a are located in the same plane.

[0143] Based on this, the fourth end surface 2322c is provided with a second limiting recessed portion 2322d, and the second limiting recessed portion 2322d is recessed toward the eighth end portion 23222. The second limiting recessed portion 2322d includes a main limiting recessed portion 2322d1 and an auxiliary limiting recessed portion 2322d2. The main limiting recessed portion 2322d1 runs through the seventh side surface 2322a, and the contour shape and size parameters of the cross section of the main limiting recessed portion 2322d1 in the second plane are adapted to the contour shape and size parameters of the cross section of the aforementioned main limiting block 23231, that is, the main limiting recessed portion 2322d1 is a dovetail groove type with an opening located on the seventh side surface 2322a, and is used to form a dovetail mortise and tenon structure with the main limiting block 23231. The contour shape and size parameters of the cross section of the auxiliary limiting recessed portion 2322d2 in the second plane are adapted to the contour shape and size parameters of the cross section of the aforementioned auxiliary limiting block 23232.

[0144] On this basis, see Fig.17 and Fig. 20 , Fig. 20 for Fig.17 The cross-sectional structure diagram of the first door panel 232 at line DD is shown, wherein: Fig. 20 The first plate section 2321 in Fig.18 The first plate segment 2321 and the second plate segment 2322 are shown as Fig.19The second plate segment 2322 is shown. The third end face 2321c of the first plate segment 2321 and the fourth end face 2322c of the second plate segment 2322 face each other, the main limit block 23231 is accommodated and matched in the main limit recess 2322d1, and an auxiliary limit block 23232 is accommodated and matched in an auxiliary limit recess 2322d2, that is, the fourth limit block 2323 arranged on the third end face 2321c is accommodated and matched in the second limit recess 2322d arranged on the fourth end face 2322c. In some other embodiments, the fourth limit block 2323 may also not include the auxiliary limit block 23232, and the first plate segment 2321 and the second plate segment 2322 are detachably connected only through the cooperation of the main limit block 23231 and the main limit recess 2322d1.

[0145] In this way, the first door panel 232 is a split structure formed by connecting the first panel segment 2321 and the second panel segment 2322. Therefore, the length dimension of the first panel segment 2321 and the second panel segment 2322 is relatively small. During actual processing and production, the processing tolerance is relatively small and the precision is relatively high. The surface flatness of the first panel segment 2321 and the second panel segment 2322 used to support the folding screen is relatively good, and thus the surface flatness of the first door panel 232 as a whole used to support the folding screen is relatively good. Therefore, the overall precision of the hinge mechanism 23 is relatively high, thereby ensuring the display effect of the folding screen.

[0146] In addition, when the main limiting recess 2322d1 and the main limiting block 23231 form a dovetail structure, the movement and rotation of the first plate segment 2321 relative to the second plate segment 2322 can be limited, and the cross-section of the main limiting block 23231 can be as large as possible to ensure the strength of the main limiting block 23231, thereby ensuring the overall strength of the first door panel 232. Finally, the shapes of the main limiting block 23231 and the main limiting recess 2322d1 are relatively regular, and the design and processing difficulty is relatively low.

[0147] Based on this, the matching clearance between the main limit block 23231 and the main limit recess 2322d1 is the first clearance, and the matching clearance between the auxiliary limit block 23232 and the auxiliary limit recess 2322d2 is the second clearance, and the second clearance is smaller than the first clearance. In this way, the first plate segment 2321 and the second plate segment 2322 can be roughly positioned by the matching between the main limit block 23231 and the main limit recess 2322d1, and the first plate segment 2321 and the second plate segment 2322 can be precisely positioned by the matching between the auxiliary limit block 23232 and the auxiliary limit recess 2322d2, so as to ensure the reliability of the detachable connection between the first plate segment 2321 and the second plate segment 2322, and also facilitate the design, processing and assembly of the first plate segment 2321 and the second plate segment 2322.

[0148] In some other embodiments, the fourth limit block 2323 may also be provided on the fourth end surface 2322c and protrude in a direction away from the eighth end 23222, the second limit recess 2322d is provided on the third end surface 2321c and recessed toward the sixth end 23212, and the fourth limit block 2323 is accommodated and matched in the second limit recess 2322d. That is, one of the third end surface 2321c and the fourth end surface 2322c is provided with the fourth limit block 2323, and the other is provided with the second limit recess 2322d, and the fourth limit block 2323 is accommodated and matched in the second limit recess 2322d.

[0149] Based on the above, please refer back to Fig.19 and Fig.21 , Fig.21 for Figure 6 The exploded structural diagram of the partial structure of the rotating shaft mechanism 23 is shown. The rotating shaft mechanism 23 also includes a first rotating shaft 239, a third rotating shaft 240, a fourth rotating shaft 241 and a fifth rotating shaft 242. The axial direction of the first rotating shaft 239 is parallel to the Y-axis direction. The first rotating shaft 239 includes a first shaft segment 2391 and a second shaft segment 2392, and the second shaft segment 2392 is arranged at an end of the seventh end 23221 along the width direction of the second plate segment 2322. In some examples, the second shaft segment 2392 can be integrally formed with the second plate segment 2322, that is, the first rotating shaft 239 and the second plate segment 2322 are an integral structural member. In other examples, the end of the second plate segment 2322 is provided with a matching shaft hole, and the second shaft segment 2392 is accommodated and matched in the matching shaft hole.

[0150] The axial direction of the third rotating shaft 240 is parallel to the Y-axis direction, and the third rotating shaft 240 is coaxially arranged with the first rotating shaft 239. The third rotating shaft 240 is arranged at the eighth end 23222 of the second plate segment 2322. The structure of the third rotating shaft 240 and the manner in which it is arranged at the second plate segment 2322 can refer to the structure of the first rotating shaft 239 and the manner in which it is arranged at the second plate segment 2322, and will not be repeated here.

[0151] The axial direction of the fourth rotating shaft 241 is parallel to the Y-axis direction. The fourth rotating shaft 241 includes a third shaft segment 2411 and a fourth shaft segment 2412. The fourth shaft segment 2412 is arranged at the other end of the seventh end 23221 along the width direction of the second plate segment 2322. In some examples, the fourth rotating shaft 241 can be integrally formed with the second plate segment 2322, that is, the fourth rotating shaft 241 and the second plate segment 2322 are an integral structural member. In other examples, a matching shaft hole is provided at the end of the second plate segment 2322, and the fourth shaft segment 2412 is accommodated and matched in the matching shaft hole.

[0152] The axial direction of the fifth rotating shaft 242 is parallel to the Y-axis direction, and the fifth rotating shaft 242 is coaxially arranged with the fourth rotating shaft 241. The fifth rotating shaft 242 is arranged at the eighth end 23222 of the second plate segment 2322. The structure of the fifth rotating shaft 242 and the manner in which it is arranged at the second plate segment 2322 can refer to the structure of the fourth rotating shaft 241 and the manner in which it is arranged at the second plate segment 2322, and will not be repeated here.

[0153] Based on this, see Fig. 22 and Fig.23 , Fig. 22 for Figure 6 The partial structural diagram of the rotating shaft mechanism 23 is shown in FIG. Fig.23 for Fig. 22 The cross-sectional structure diagram of the rotating shaft mechanism 23 at line EE is shown. The first shaft section 2391 of the first rotating shaft 239 is inserted into the first shaft hole 23121j, and a part of the shaft section of the third rotating shaft 240 is inserted into the third shaft hole 23123a. The axis of the first rotating shaft 239 is the first axis, that is, the second plate section 2322 is rotatably connected with the second beam section 2312 through the first rotating shaft 239 and the third rotating shaft 240. That is, the second plate section 2322 is rotatably connected with the second beam section 2312 around the first axis, and the first door panel 232 is rotatably connected with the second beam section 2312 around the first axis.

[0154] In some other embodiments, the rotating shaft mechanism 23 may not include the third rotating shaft 240, and the first door panel 232 and the support beam 231 are only rotatably connected through the first rotating shaft 239. In some other embodiments, the first plate segment 2321 and the first beam segment 2311 may be rotatably connected through the rotating shaft, and the axis of the rotating shaft is the first axis, that is, the first plate segment 2321 and the first beam segment 2311 are rotatably connected around the first axis, and the first door panel 232 and the first beam segment 2311 are rotatably connected around the first axis. The specific implementation method can refer to the implementation method of the second plate segment 2322 and the second beam segment 2312 being rotatably connected through the first rotating shaft 239 and the third rotating shaft 240, which will not be repeated here. In some other embodiments, the first door panel 232 may also be rotatably connected with the first beam segment 2311 around the first axis, and rotatably connected with the second beam segment 2312 around the first axis.

[0155] On this basis, see Fig.24 and Fig.25 , Fig.24 for Figure 6 The structure diagram of the rotating shaft mechanism 23 shown is in a folded state, Fig.25 for Fig.24The schematic diagram of the partial structure of the rotating shaft mechanism 23 when viewed from another angle is shown. The end of the second shaft segment 2392 away from the first shaft segment 2391 faces the side wall surface of the first recessed portion 23111d of the first beam segment 2311 that faces away from the first main body segment 23112, and the distance between the two along the length direction of the support beam 231 is less than the length of the first shaft segment 2391. In some other embodiments, the second shaft segment 2392 of the first rotating shaft 239 and a partial shaft segment of the third rotating shaft 240 can also be arranged in the second beam segment 2312, the first shaft hole 23121j and the third shaft hole 23123a are arranged in the second plate segment 2322, the first shaft segment 2391 of the first rotating shaft 239 is penetrated in the first shaft hole 23121j, and a partial shaft segment of the third rotating shaft 240 is penetrated in the third shaft hole 23123a. One end of the first axial hole 23121j away from the second axial segment 2392 faces the side wall surface of the first recessed portion 23111d facing away from the first main body segment 23112, and the distance between the two along the length direction of the support beam 231 is less than the length of the first axial segment 2391.

[0156] In this way, the first door panel 232 can rotate relative to the support beam 231, and the shaft mechanism 23 moves to Figure 6 In the unfolded state shown in FIG. 1 , the surface of the first door panel 232 for supporting the folding screen and the surface of the support beam 231 for supporting the folding screen face the same direction and are substantially coplanar, so that the folding screen device 100 can achieve a large-screen display. Fig.24 In the folded state shown, the surface of the first door panel 232 used to support the folding screen and the surface of the support beam used to support the folding screen can be at a certain angle (for example, the angle can be 40° or 45° or 50°) to adapt to the bending state of the folding screen and support the folding screen, so that the folding screen device 100 can be reduced in size for easy carrying.

[0157] During this process, the side wall surface of the first recessed portion 23111d can prevent the first shaft segment 2391 from detaching from the first shaft hole 23121a, thereby preventing the second beam segment 2312 from detaching from the second plate segment 2322, thereby ensuring the overall reliability of the rotating shaft mechanism 23.

[0158] On the basis of the above, when there are two second plate segments 2322, the connection structure of the seventh end 23221 of the second second plate segment 2322 and the sixth end 23212 of the first plate segment 2321 can refer to the connection structure of the seventh end of the first second plate segment 2322 and the fifth end 23211 of the first plate segment 2321, and will not be repeated here. In some examples, the two second plate segments 2322 and their connection structures with the first plate segment 2321 can be symmetrical about the first symmetry plane. In other examples, the structures of the two second plate segments 2322 and their connection structures with the first plate segment 2321 can also be different.

[0159] Based on the above, please refer to Figure 7 and Fig.24 , the third door panel 234 can be arranged on the other side of the support beam 231 along the aforementioned first direction. The third door panel 234 includes a third panel segment 2341 and two fourth panel segments 2342, the two fourth panel segments 2342 are arranged at intervals along the length direction of the support beam 231, and are respectively detachably connected to the two ends of the third panel segment 2341. A third panel segment 2341 is arranged on the other side of a first beam segment 2311 along the aforementioned first direction, and a fourth panel segment 2342 is arranged on the other side of a second beam segment 2312 along the aforementioned first direction. Among them, the detachable connection structure formed by the third panel segment 2341 and the fourth panel segment 2342 can refer to the detachable connection structure formed by the aforementioned first panel segment 2321 and the second panel segment 2322, which will not be repeated here. The rotation connection structure formed by the third door panel 234 and the support beam 231 can refer to the rotation connection structure formed by the aforementioned first door panel 232 and the support beam 231, which will not be repeated here.

[0160] The two fourth plate segments 2342 and the connection structure with the third plate segment 2341 can be symmetrical about the first symmetry plane; the first door panel 232 and the connection structure with the support beam 231 can be symmetrical with the third door panel 234 and the connection structure with the support beam 231 about the aforementioned second symmetry plane; the first door panel 232 and the connection structure with the support beam 231 are centrally symmetrical with the third door panel 234 and the connection structure with the support beam 231 about the aforementioned central axis. In some other embodiments, the third door panel 234 may not be symmetrical about the first symmetry plane, the third door panel 234 and the first door panel 232 may not be symmetrical about the second symmetry plane, and the third door panel 234 and the first door panel 232 may not be centrally symmetrical about the central axis.

[0161] Based on the above, please refer back to Figure 7The cover plate 238 and the support beam 231 form a support beam assembly. The cover plate 238 includes a first cover plate 2381 and a second cover plate 2382 arranged at intervals along the Y-axis direction. A first cover plate 2381 can be covered on the side of the second part of a first beam section 2311 that is opposite to the folding screen by means of snap connection, thread connection, bonding, etc., and there is an accommodation gap between the first beam section 2311 and the first beam section 2311. The accommodation gap is used to accommodate a part of the flexible circuit board so that the electronic components in the first shell 21 are electrically connected to the electronic components in the second shell 22. A second cover plate 2382 can be covered on the side of the second part of a second beam section 2312 that is opposite to the folding screen by means of snap connection, thread connection, bonding, etc. A ninth recess 2382a is formed on the surface of the second cover plate 2382 facing the second beam section 2312. The ninth recess 2382a and the eighth recess 23121i of the second beam section 2312 define a fourth axial hole 231b. The fourth axial hole 231b is coaxial with the second axial hole 231a.

[0162] Based on the above, please refer to Fig.21 and Fig. 22 The shaft mechanism 23 further includes a second shaft 243, which is disposed at one end of the first swing arm 236 located in the seventh recessed portion 23121h, and the two ends of the second shaft 243 are respectively penetrated in the second shaft hole 231a and the fourth shaft hole 231b, that is, the first swing arm 236 is rotatably connected to the support beam 231 through the second shaft 243. In some examples, the second shaft 243 can be relatively fixed to the first swing arm 236, for example, the second shaft 243 can be integrally formed with the first swing arm 236, and the second shaft 243 can rotate in the second shaft hole 231a and the fourth shaft hole 231b. In other examples, the second shaft 243 can also be penetrated at one end of the first swing arm 236 and can rotate relative to the first swing arm 236, and the second shaft 243 is relatively fixed to the support beam 231. In some other examples, the second rotating shaft 243 can rotate relative to the support beam 231 and can rotate relative to the first swing arm 236, which is not limited in the present application. In some other embodiments, the rotating shaft mechanism 23 may not have the second shaft hole 231a or the fourth shaft hole 231b.

[0163] Please continue reading Fig.21 and Fig. 22 The second door panel 233 is located on the side of the second panel section 2322 of the first door panel 232 away from the second beam section 2312. The second door panel 233 is generally in the shape of a long strip. Figure 6In the unfolded state shown, the length direction, width direction and thickness direction of the second door panel 233 are respectively the same as the length direction, width direction and thickness direction of the support beam 231. The second door panel 233 has a ninth side surface 233a and a tenth side surface 233b opposite to each other, and the ninth side surface 233a and the tenth side surface 233b are arranged along the thickness direction of the second door panel 233. Among them, the partial area of ​​the ninth side surface 233a close to the second plate segment 2322 can be an arc surface, and the remaining partial area is a plane, and the ninth side surface 233a is used to support a part of the second part of the folding screen. In some other embodiments, the ninth side surface 233a can also be roughly flat.

[0164] Based on this, the tenth side surface 233b has a tenth recessed portion 233c, which is recessed toward the ninth side surface 233a and penetrates the two side surfaces of the second door panel 233 along the width direction of the second door panel 233. The side wall surface of the tenth recessed portion 233c has a first slide groove 233c1, which penetrates the two side surfaces of the second door panel 233 along the width direction of the second door panel 233. The tenth side surface 233b is also provided with a second slide groove 233f, which penetrates the ninth side surface 233a along the thickness direction of the second door panel 233. The second slide groove 233f is in the shape of a strip hole extending along the width direction of the second door panel 233.

[0165] On this basis, the end of the first swing arm 236 away from the second beam section 2312 has a first sliding block 2361. Fig.21 and Fig. 22 In the illustrated embodiment, there are two first sliders 2361, which are respectively located at two ends of the first swing arm 236 along the Y-axis direction. One end of the first swing arm 236 away from the second beam section 2312 is located in the tenth recessed portion 233c, and one first slider 2361 is slidably matched with one first slide groove 233c1, that is, the other end of the first swing arm 236 is slidably connected with the second door panel 233. In some other embodiments, the number of the first slider 2361 and the number of the first slide groove 233c1 may also be one.

[0166] Please continue reading Fig.21 and Fig. 22, the second door panel 233 is provided with a fifth shaft hole 233d and a sixth shaft hole 233e at one end thereof facing the second beam section 2312 along the width direction thereof, and the fifth shaft hole 233d and the sixth shaft hole 233e are arranged at intervals along the length direction of the support beam 231. The third shaft section 2411 of the fourth rotating shaft 241 arranged on the second plate section 2322 is inserted into the fifth shaft hole 233d, and a part of the shaft section of the fifth rotating shaft 242 is inserted into the sixth shaft hole 233e, that is, the second door panel 233 is rotatably connected to the second plate section 2322 through the fourth rotating shaft 241 and the fifth rotating shaft 242. In some other embodiments, the rotating shaft mechanism 23 may also not include one of the fourth rotating shaft 241 and the fifth rotating shaft 242, and the second door panel 233 is rotatably connected to the first door panel 232 only through the other of the fourth rotating shaft 241 and the fifth rotating shaft 242. In some other embodiments, one of the second door panel 233 and the first door panel 232 is provided with an arc groove, and the other is provided with an arc block adapted to the arc groove, and the rotational connection between the second door panel 233 and the first door panel 232 is achieved by slidingly fitting the arc block in the arc groove.

[0167] Based on the above, please refer to Fig. 22 and Fig.23 , the fourth door panel 235 is located on the side of the fourth panel section 2342 of the third door panel 234 away from the second beam section 2312, and is rotatably connected to the fourth panel section 2342. One end of the second swing arm 237 is rotatably connected to the second beam section 2312 of the support beam 231, and the other end is slidably connected to the fourth door panel 235. The fourth door panel 235 and its connection structure with the fourth panel section 2342 refer to the second door panel 233 and its connection structure with the second panel section 2322, and will not be repeated here. The second swing arm 237 and its connection structure with the second beam section 2312 and the fourth door panel 235 can refer to the first swing arm 236 and its connection structure with the second beam section 2312 and the second door panel 233, and will not be repeated here.

[0168] In some examples, the fourth door panel 235 and its connection structure with the fourth panel segment 2342 may be symmetrical with the second door panel 233 and its connection structure with the second panel segment 2322 about the aforementioned second symmetry plane. The second swing arm 237 and its connection structure with the second beam segment 2312 and the fourth door panel 235 may be symmetrical with the first swing arm 236 and its connection structure with the second beam segment 2312 and the second door panel 233 about the aforementioned second symmetry plane.

[0169] Based on the above, please refer to Fig.26 , Fig.26 for Fig. 22The cross-sectional structure diagram of the partial structure of the support device 20 formed by assembling the rotating shaft mechanism 23 with the first shell 21 and the second shell 22. The second door plate 233 can be connected to the aforementioned first shell 21, that is, the first door plate 232 is connected to the first shell 21 through the second door plate 233, and the first shell 21 can rotate relative to the first door plate 232. The fourth door plate 235 can be connected to the aforementioned second shell 22, that is, the third door plate 234 is connected to the second shell 22 through the fourth door plate 235.

[0170] In this way, the second door panel 233 can rotate relative to the first door panel 232, and then rotate relative to the support beam 231, and the fourth door panel 235 can rotate relative to the third door panel 234, and then rotate relative to the support beam 231. When the first housing 21 rotates under the action of an external force, the second door panel 233 and the first swing arm 236 rotate with the first housing 21, and then drive the first door panel 232 to rotate. When the second housing 22 rotates under the action of an external force, the fourth door panel 235 and the second swing arm 237 rotate with the second housing 22, and then drive the third door panel 234 to rotate.

[0171] In this way, when the shaft mechanism 23 moves to Figure 6 In the unfolded state shown, the surfaces of the first shell 21, the second door panel 233, the first door panel 232, the support beam 231, the third door panel 234, the fourth door panel 235, and the second shell 22 for supporting the folding screen are all oriented in the same direction and are approximately coplanar. Fig.24 In the folded state shown, the surfaces of the second door panel 233 and the fourth door panel 235 for supporting the folding screen and the surface of the support beam 231 for supporting the folding screen may all be at a certain angle (for example, the angle may be 85° or 90° or 95°), and the surfaces of the first shell 21, the second door panel 233, the first door panel 232, the support beam 231, the third door panel 234, the fourth door panel 235, and the second shell 22 for supporting the folding screen may be approximately U-shaped to adapt to the bending state of the folding screen and support the folding screen.

[0172] For some examples, see Fig.26 , the second door plate 233 can be slidably connected to the first housing 21 in a direction perpendicular to the Y axis. Specifically, a first slide bar 211 is provided on the first housing 21, one end of which is accommodated and fitted in the aforementioned second slide groove 233f, and can slide in the second slide groove 233f. The fourth door plate 235 can be slidably connected to the second housing 22 in a direction perpendicular to the Y axis. The specific connection structure can refer to the connection structure between the second door plate 233 and the second housing 22, which will not be repeated here.

[0173] Based on this, the rotating shaft mechanism 23 also includes a first driving mechanism (not shown in the figure) and a second driving mechanism (not shown in the figure). The first driving mechanism is connected between the support beam 231 and the first shell 21, and is used to rotate the rotating shaft mechanism 23 by Figure 6 The expanded state shown moves to Fig.24 When the first housing 21 is in the folded state, the first housing 21 is driven to move relative to the second door plate 233 toward the direction close to the support beam 231, and the shaft mechanism 23 is Fig.24 The folded state shown moves to Figure 6 In the unfolded state shown in FIG. 1 , the first housing 21 is driven to move relative to the second door panel 233 in a direction away from the support beam 231. The second driving mechanism is connected between the support beam 231 and the second housing 22, and is used to rotate the shaft mechanism 23 by Figure 6 The expanded state shown moves to Fig.24 When the second housing 22 is in the folded state, the second housing 22 is driven to move relative to the fourth door plate 235 toward the direction close to the support beam 231. Fig.24 The folded state shown moves to Figure 6 In the unfolded state shown, the second housing 22 is driven to move in a direction away from the support beam 231 relative to the third door panel 234 .

[0174] In this way, the supporting device 20 can be extended or shortened in a direction perpendicular to the Y-axis to prevent the first shell 21 and the second shell 22 from pulling the second part 12 of the folding screen 10 when the folding screen device 100 is in a folded state, and to prevent the first shell 21 and the second shell 22 from squeezing the second part 12 of the folding screen 10 and damaging it when the folding screen device 100 is in an unfolded state.

[0175] In some other embodiments, when the second door panel 233 and the first door panel 232 are rotationally connected by the sliding fit of the arc block and the arc groove, and the fourth door panel 235 and the third door panel 234 are rotationally connected by the sliding fit of the arc block and the arc groove, the pivot mechanism 23 may not include the first drive mechanism and the second drive mechanism, the second door panel 233 may be fixedly connected to the first shell 21, and the fourth door panel 235 may be fixedly connected to the second shell 22.

[0176] Please return to Figure 6 and Figure 7, the number of the second door panels 233, the number of the fourth door panels 235, the number of the first swing arms 236 and the number of the second swing arms 237 can all be two, and the two second door panels 233, the two fourth door panels 235, the two first swing arms 236 and the two second swing arms 237 are respectively arranged at intervals along the length direction of the support beam 231. Specifically, when there are two second beam sections 2312, two plate sections 2322 and fourth plate sections 2342, the second door panels 233 and the first swing arms 236 correspond to the second beam sections 2312 and the second plate sections 2322 one by one, and the fourth door panels 235 and the second swing arms 237 correspond to the second beam sections 2312 and the fourth plate sections 2342 one by one.

[0177] Based on this, when assembling the pivot mechanism 23, a second beam segment 2312, a second plate segment 2322, a second door panel 233, a fourth plate segment 2342, a fourth door panel 235, a first swing arm 236, a second swing arm 237, and a second cover plate 2382 can be assembled to form a pivot mechanism sub-module, and then assembled in the same manner to form another pivot mechanism sub-module, and then the first plate segment 2321 and the two second plate segments 2322 can be assembled, and the third plate segment 2341 and the two fourth plate segments 2342 can be assembled, and then the first beam segment 2311 and the two second beam segments 2312 can be assembled to form the pivot mechanism 23.

[0178] In the description of this specification, specific features, structures, materials or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

[0179] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A support beam, characterized in that: Used in a folding screen device, the folding screen device comprises a folding screen, a part of the folding screen is supported by the support beam; the support beam comprises: A first beam section, the first beam section comprises a first main section and a first end portion, the first end portion comprises a first end face and a first side face and a second side face opposite to each other, the first end face faces away from the first main section; the first side face is provided with a first recessed portion recessed toward the second side face, the first recessed portion passes through the first end face; a second beam section, the second beam section comprising a second main section and a second end section, the second end section having a second end surface, the second end surface facing away from the second main section; at least a portion of the second end section is located in the first recessed portion; a connecting member, wherein the at least part of the first end portion and the second end portion are connected by the connecting member; Wherein, the second end surface is provided with a first limit block, the side wall surface of the first recessed portion facing away from the first main body section is provided with a first limit recessed portion recessed toward the first main body section, and the first limit recessed portion penetrates the first side surface; or, the side wall surface of the first recessed portion facing away from the first main body section is provided with a first limit block, and the second end surface is provided with a first limit recessed portion recessed toward the second main body section; the first limit block is accommodated and matched in the first limit recessed portion; Along the direction from the opening of the first limiting recess to the bottom wall surface, the width of at least a portion of the first limiting block in the first direction is greater than the width of the opening of the first limiting recess in the first direction, and the first direction is parallel to the first side surface and perpendicular to the length direction of the support beam; The cross-section of the first limiting block in the first plane is trapezoidal in shape, the bottom edge of the trapezoid close to the bottom wall of the first limiting recess is the lower bottom edge, and the first plane is parallel to the first side surface.

2. The support beam according to claim 1, characterized in that: The angle between any side of the trapezoid and the lower base is greater than or equal to 85° and less than or equal to 89°.

3. The support beam according to claim 1, characterized in that: The second end portion has a third side surface and a fourth side surface, and the fourth side surface faces the bottom wall surface of the first recessed portion; The first limit block is arranged on the second end surface, the surface of the first limit block facing the bottom wall of the first recessed portion is coplanar with the fourth side surface, and the surface of the first limit block facing away from the bottom wall of the first recessed portion is coplanar with the third side surface.

4. The support beam according to any one of claims 1 to 3, characterized in that: The second end portion has a third side surface and a fourth side surface, and the fourth side surface faces the bottom wall surface of the first recessed portion; The support beam further includes a first positioning column; The first positioning column is arranged on the fourth side surface, the bottom wall surface of the first recessed portion has a first positioning hole, and the first positioning column is accommodated and matched in the first positioning hole; or, The first positioning column is arranged on the bottom wall surface of the first recessed portion, the fourth side surface has a first positioning hole, and the first positioning column is accommodated and matched in the first positioning hole.

5. The support beam according to claim 4, characterized in that: The first positioning column is arranged on the fourth side surface, the first limiting block is arranged on the second end surface, and a part of the first positioning column protrudes from the second end surface and is connected to the first limiting block.

6. The support beam according to claim 5, characterized in that: The orthographic projection of the portion of the first positioning column in the first plane overlaps with the orthographic projection of the first limiting block in the first plane; and the first plane is parallel to the first side surface.

7. The support beam according to claim 4, characterized in that: The first positioning column is disposed on the fourth side surface, and an end surface of the first positioning column away from the fourth side surface is flush with the second side surface.

8. The support beam according to any one of claims 1 to 3, characterized in that: The second end portion has a third side surface and a fourth side surface facing each other, the fourth side surface faces the bottom wall surface of the first recessed portion; the fourth side surface is provided with a second recessed portion and a third recessed portion spaced apart along a first direction; the first direction is parallel to the first side surface and perpendicular to the length direction of the support beam; The bottom wall surface of the first recessed portion has a second limiting block and a third limiting block spaced apart along the first direction, and the second limiting block, the third limiting block and the bottom wall surface of the first recessed portion form a limiting space; The second end portion between the second recessed portion and the third recessed portion is accommodated and fitted in the limiting space.

9. A rotating shaft mechanism, characterized in that: include: A support beam, wherein the support beam is the support beam according to any one of claims 1 to 8; A first door panel, the first door panel is arranged on one side of the support beam along a first direction, the first direction is parallel to the first side surface and perpendicular to the length direction of the support beam; the first door panel is rotationally connected to the first beam section around a first axis, and / or the first door panel is rotationally connected to the second beam section around a first axis, the first axis is parallel to the length direction of the support beam.

10. The rotating shaft mechanism according to claim 9, characterized in that: The first door panel comprises: A first plate segment, wherein one of the first plate segments is arranged on one side of one of the first beam segments along the first direction; A second plate segment, wherein one of the second plate segments is arranged on one side of one of the second beam segments along the first direction, and the second plate segment is detachably connected to the first plate segment; Wherein, the first plate segment is connected to the first beam segment for rotation around the first axis; and / or the second plate segment is connected to the second beam segment for rotation around the first axis.

11. The rotating shaft mechanism according to claim 10, characterized in that: The rotating shaft mechanism further includes a first rotating shaft, and the first rotating shaft includes a first shaft segment and a second shaft segment; The second beam section is provided with a first axial hole, the first axial section is inserted into the first axial hole, and the second axial section is arranged on the second plate section; one end of the second axial section away from the first axial section faces the side wall surface of the first recessed portion facing away from the first main body section, and the distance between the two along the length direction of the support beam is less than the length of the first axial section; or, The second plate section is provided with a first axial hole, the first axial section is inserted into the first axial hole, and the second axial section is arranged in the second beam section; one end of the first axial hole away from the second axial section faces the side wall surface of the first recessed portion facing away from the first main body section, and the distance between the two along the length direction of the support beam is less than the length of the first axial section.

12. The rotating shaft mechanism according to claim 10, characterized in that: The first plate segment has a third end face, the second plate segment has a fourth end face, one of the third end face and the fourth end face is provided with a fourth limit block, and the other is provided with a second limit recess, and the fourth limit block is accommodated and matched in the second limit recess.

13. The rotating shaft mechanism according to claim 12, characterized in that: The fourth limit block includes a main limit block and an auxiliary limit block, the cross-sectional profile of the main limit block in the second plane is non-circular, and the cross-sectional profile of the auxiliary limit block in the second plane is at least a part of a circle; the second plane is perpendicular to the length direction of the support beam; The second limiting recess includes a main limiting recess and an auxiliary limiting recess, the main limiting block is accommodated and matched in the main limiting recess, and the matching gap between the two is a first gap; one auxiliary limiting block is accommodated and matched in one auxiliary limiting recess, and the matching gap between the two is a second gap, and the second gap is smaller than the first gap.

14. The rotating shaft mechanism according to any one of claims 10 to 13, characterized in that: The bottom wall surface of the first recessed portion is provided with a fifth recessed portion recessed toward the second side surface, and the fifth recessed portion penetrates the first end surface; The second end portion has a third side surface and a fourth side surface, the fourth side surface faces the bottom wall surface of the first recessed portion; the fourth side surface is provided with a sixth recessed portion and a seventh recessed portion recessed toward the third side surface, the sixth recessed portion is located between the seventh recessed portion and the second end surface, the sixth recessed portion passes through the side wall surface of the seventh recessed portion, and the inner wall surface of the sixth recessed portion and the inner wall surface of the fifth recessed portion surround a second axial hole; The pivot mechanism also includes a first swing arm, a second pivot and a second door panel, the second door panel is located on a side of the second panel section away from the second beam section and is rotatably connected to the second panel section; one end of the first swing arm is located in the seventh recess, the second pivot is arranged at the one end of the first swing arm and passes through the second shaft hole, the other end of the first swing arm is slidably connected to the second door panel, and the first swing arm is used to rotate relative to the support beam so that the pivot mechanism moves between an unfolded state and a folded state.

15. A supporting device, characterized in that: include: A rotating shaft mechanism, wherein the rotating shaft mechanism is the rotating shaft mechanism according to any one of claims 9 to 14; A first shell is connected to the first door panel and can rotate relative to the first door panel.

16. A folding screen device, characterized in that: include: A folding screen, the folding screen comprising a first part and a second part connected to each other; A supporting device, wherein the supporting device is the supporting device according to claim 15, wherein the first part is fixed to the first shell, and the second part is supported on the rotating shaft mechanism.

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