Supporting device and folding screen equipment

Abstract

The invention provides a supporting device and folding screen equipment, relates to the technical field of folding screen equipment, and aims to improve the display area of a folding screen and ensure that the folding screen equipment is light and thin. A first shell, a second shell and a third shell of the folding screen device are arranged in a stacked mode. The thickness of the side, close to the first rotating shaft mechanism, of the first shell is larger than that of the side, away from the first rotating shaft mechanism, of the first shell, a first avoiding space is formed in the side, away from the first rotating shaft mechanism, of the first shell, and the first avoiding space can contain the fourth part of the second shell. And under the condition that the total thickness of the supporting device is fixed, the thickness of the fourth part can extend into the first avoiding space so as to enlarge the space of the second shell for accommodating the second rotating shaft mechanism.

Description

Technical Field

[0001] The present application relates to the technical field of folding screen devices, and in particular to a supporting device and a folding screen device. Background Art

[0002] At present, in order to solve the problems of large size and inconvenience in carrying of traditional electronic devices, foldable electronic devices have come into being. However, existing foldable electronic devices such as foldable mobile phones are mostly double-folding designs, that is, the screen size is doubled by unfolding once, and the aspect ratio of the unfolded screen is generally between 10:9 and 11:9, and the size is closer to a square. However, some existing software applications are more suitable for the aspect ratio of candy-bar phones, which is between 16:10 and 18:9. For many applications that need to be used in landscape mode, the user experience has not been substantially improved. In order to adapt to the size of most existing applications when in use, it is necessary to further increase the length of the long side of the foldable electronic device in the unfolded state on the basis of double folding. In this way, while increasing the display area, it can also adapt to the use of most applications.

[0003] In order to increase the length of the long side of the foldable electronic device in the unfolded state, the foldable screen device can be folded twice or more to further increase the length of the long side, thereby obtaining a foldable screen device with three folds or more. However, how to ensure the lightness and thinness of the foldable screen device while achieving three folds or more folds has become a problem. Summary of the invention

[0004] The embodiments of the present application provide a supporting device and a folding screen device, which can both increase the display area of ​​the folding screen and ensure that the folding screen device is light and thin.

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

[0006] In a first aspect, a support device is provided, the support device comprising a first rotating shaft mechanism, a first shell, a second shell, a second rotating shaft mechanism and a third shell. The second shell and the first shell are respectively located on both sides of the first rotating shaft mechanism and are configured to rotate between an unfolded state and a folded state through the first rotating shaft mechanism.

[0007] The first shell includes a first part and a second part, the second part is connected to a side of the first part away from the first rotating shaft mechanism, and the first rotating shaft mechanism has a first rotating shaft portion for cooperating with the first part; the first shell has a first supporting plane, the first part has a first surface opposite to the first supporting plane, and the second part has a second surface opposite to the first supporting plane, and a vertical distance from the first surface to the first supporting plane is greater than a vertical distance from the second surface to the first supporting plane, so as to form a first avoidance space on the side facing the second surface, and the orthographic projection of the first rotating shaft portion in the plane where the first supporting plane is located is located within the orthographic projection of the first part in the plane where the first supporting plane is located.

[0008] The second shell includes a third part and a fourth part. The third part is connected to the first rotating shaft mechanism, and the fourth part is connected to a side of the third part away from the first rotating shaft mechanism.

[0009] The third housing and the second housing are respectively located on both sides of the second rotating shaft mechanism and are configured to rotate between an unfolded state and a folded state through the second rotating shaft mechanism. The second rotating shaft mechanism has a third rotating shaft portion for cooperating with the fourth portion.

[0010] In which, in the folded state, the first shell, the second shell and the third shell are stacked in sequence, and the orthographic projection of the third rotation axis part in the plane where the first supporting plane is located is located in the orthographic projection of the fourth part in the plane where the first supporting plane is located, and at least one end of the fourth part adjacent to the second part is located in the first avoidance space.

[0011] The thickness of the first shell at the first rotating shaft mechanism meets the design requirements of the first rotating shaft mechanism, that is, the thickness of the first part meets the design requirements of the first rotating shaft mechanism. The thickness of the first shell outside the first rotating shaft mechanism does not need to be restricted by the first rotating shaft mechanism, and thus the part of the first shell outside the first rotating shaft mechanism can be thinned, that is, the second part can be thinned.

[0012] Similarly, the thickness of the second shell at the second rotating shaft mechanism meets the design requirements of the second rotating shaft mechanism, that is, the thickness of the fourth part meets the design requirements of the second rotating shaft mechanism. The thickness of the second shell outside the second rotating shaft mechanism does not need to be restricted by the second rotating shaft mechanism, and thus the part of the second shell outside the second rotating shaft mechanism can be thinned, that is, the third part can be thinned. In this way, the fourth part can be accommodated in the area where the second part is concave relative to the first part, that is, the fourth part can be accommodated in the first avoidance space.

[0013] Therefore, when the total thickness of the support device is constant, since the first shell forms a first avoidance space at the second part, the thickness of the second shell at the second hinge mechanism can extend into the first avoidance space to expand the space of the second shell to accommodate the second hinge mechanism. Since the components of the second hinge mechanism are relatively complex, the difficulty of installing the second hinge mechanism can be reduced by expanding the installation space of the second hinge mechanism. Moreover, under the premise that the installation difficulty of the second hinge mechanism is certain, that is, under the premise that the installation space of the second hinge mechanism is certain, through the above arrangement, the folding screen device can be further thinned, which is conducive to the development of lightweight and thin folding screen devices.

[0014] In a possible implementation of the first aspect, the second shell has a second supporting plane. The third portion includes a third surface opposite to the second supporting plane, the fourth portion includes a fourth surface opposite to the second supporting plane, and a vertical distance from the third surface to the second supporting plane is smaller than a vertical distance from the fourth surface to the second supporting plane, so as to form a second avoidance space on the side toward which the third surface faces.

[0015] In the unfolded state, the second support plane is coplanar with the first support plane; in the folded state, the second support plane is opposite to the first support plane, and one end of the first part adjacent to the third part is located in the second avoidance space. The first shell forms a first avoidance space through the above structure, and the second shell forms a second avoidance space through the above structure. The structures of the first shell and the second shell are simple and easy to process. In addition, the first avoidance space and the second avoidance space further reduce the design difficulty of the first rotating shaft mechanism and the second rotating shaft mechanism, which is also conducive to the lightweight development of the support device and the folding screen device.

[0016] In a possible implementation of the first aspect, the second surface is recessed relative to the first surface toward the first support plane to form a first avoidance space. The second shell also includes a second support plane facing away from the first shell, and the third surface is recessed relative to the fourth surface toward the second support plane to form a second avoidance space.

[0017] In a possible implementation of the first aspect, the second surface includes a first region and a first transition region, the first transition region is connected between the first region and the first surface, and in a direction from the first portion to the second portion, the first transition region extends obliquely toward the first region. The third surface includes a second region and a second transition region, the second transition region is connected between the second region and the fourth surface, and in a direction from the fourth portion to the third portion, the second transition region extends obliquely toward the second region, the second transition region is adapted to the first transition region, and the second region is adapted to the first region.

[0018] Therefore, the sharp corner formed by the first step is eliminated by setting the first transition area, and the sharp corner formed by the second step is eliminated by setting the second transition area. When using the folding screen device, the user will not feel the sharp corners on the first shell and the second shell, thereby improving the user experience.

[0019] In a possible implementation of the first aspect, the first transition region is connected between the first region and the second surface, and the angle between the first region and the second surface is changed from a right angle to an obtuse angle. In the unfolded state, when the user uses the folding screen device, he directly touches the back of the first shell, that is, the surface of the first shell facing away from the folding screen. The obtuse angle formed by the connection of the first region and the second surface through the first transition region makes it difficult for the user to perceive the ridge between the first surface and the second surface, thereby improving the user's experience.

[0020] Similarly, the second transition area is connected between the third area and the fourth surface, and the angle between the third area and the fourth surface changes from a right angle to an obtuse angle. When the folding screen device is unfolded, the user directly touches the back of the second shell, that is, the surface of the second shell facing away from the folding screen. The third area and the fourth surface are connected through the second transition area to form an obtuse angle, and the user is not easy to perceive the convex edge between the third area and the fourth surface, thereby improving the user experience.

[0021] In a possible implementation of the first aspect, the first transition region is a smoothly transitioned curved surface, and the second transition region is a smoothly transitioned curved surface. The first surface and the second surface are connected by a smoothly transitioned curved surface, eliminating the sharp corners or ridges formed at the junction of the first part and the second part. The third surface and the fourth surface are connected by a smoothly transitioned curved surface, eliminating the sharp corners or ridges formed at the junction of the third part and the fourth part. In the unfolded state, the back of the folding screen device has no sharp corners or ridges, thereby improving the user experience.

[0022] In a possible implementation of the first aspect, the first surface is coplanar with the second surface, the third surface is coplanar with the fourth surface, and in the folded state, the third surface is parallel to the first surface. In the arrangement direction of the first part and the second part, the second surface extends obliquely in a direction close to the first support plane. In the arrangement direction of the first part and the second part, the fourth surface extends obliquely in a direction close to the first support plane. The first avoidance space is formed by the second surface being inclined closer to the first support plane than the first surface, and at least part of the fourth part is accommodated in the first avoidance space. The second avoidance space is formed by the third surface being inclined farther away from the first support plane than the fourth surface, and at least part of the first part is accommodated in the second avoidance space. The first shell forms the first avoidance space through the above structure, and the second shell forms the second avoidance space through the above structure. The structures of the first shell and the second shell are simple and easy to process. Furthermore, the inclined surface eliminates the protrusions and depressions at the junction of the first part and the second part, making the back of the first shell smoother. Moreover, the first avoidance space and the second avoidance space further reduce the design difficulty of the first rotating shaft mechanism and the second rotating shaft mechanism, which is also conducive to the lightweight development of the supporting device and the folding screen device.

[0023] In a possible implementation of the first aspect, the angle between the second surface and the first support plane is less than or equal to 30 degrees. The angle between the fourth surface and the second support plane is less than or equal to 30 degrees. In this way, it is possible to avoid the thickness of one side of the second shell being too thin due to the excessive inclination angle, which affects the structural strength of the shell. When the inclination angle is less than or equal to 30 degrees, it can meet the requirements of thinning the support device, or reduce the design difficulty of the second rotating shaft mechanism, and meet the structural strength of the shell when it is used.

[0024] In a possible implementation of the first aspect, the first rotating shaft mechanism has a second rotating shaft portion for cooperating with the third part. The third housing has a third supporting plane and a fifth surface arranged opposite to each other, and in the direction from one end close to the second rotating shaft mechanism to one end away from the second rotating shaft mechanism, the third supporting plane extends obliquely toward the direction close to the third surface. In the unfolded state, the third supporting plane is coplanar with the first supporting plane. In the folded state, the third supporting plane is in the same direction as the first supporting plane. Therefore, under the condition that the total thickness of the supporting device is constant, since the third housing forms a third avoidance space at the sixth part, the thickness of the second housing at the first rotating shaft mechanism can extend into the third avoidance space to expand the space for the second housing to accommodate the first rotating shaft mechanism. Since the components of the first rotating shaft mechanism are relatively complex, the difficulty of installing the first rotating shaft mechanism can be reduced by expanding the installation space of the first rotating shaft mechanism. Moreover, under the premise that the difficulty of installing the first rotating shaft mechanism is certain, that is, the installation space of the first rotating shaft mechanism is certain, through the above-mentioned setting, the folding screen device can be further thinned, which is conducive to the development of the light and thin folding screen device.

[0025] In a possible implementation of the first aspect, the second shell has a second support plane. In the unfolded state, the third support plane, the second support plane and the first support plane are coplanar. In the folded state, the second support plane is opposite to the first support plane, and the second support plane is parallel to and faces the third support plane. The third avoidance space is formed by the sixth surface being tilted further away from the first support plane than the fifth surface, and at least part of the third part is accommodated in the third avoidance space. The third shell forms the third avoidance space through the above structure, and the third shell has a simple structure and is easy to process. Furthermore, the setting of the inclined surface makes the back of the first shell smoother. In addition, the third avoidance space further reduces the design difficulty of the first hinge mechanism, which is also conducive to the lightweight development of the support device and the folding screen device.

[0026] In a possible implementation of the first aspect, the angle between the third support plane and the fifth surface is less than or equal to 30 degrees. In this way, it is possible to avoid the thickness of one side of the third shell being too thin due to the inclination angle being too large, thereby affecting the structural strength of the shell. When the inclination angle is less than or equal to 30 degrees, it can meet the requirements of thinning the support device or reduce the design difficulty of the first rotating shaft mechanism, and can also meet the structural strength of the shell when it is used.

[0027] In a possible implementation of the first aspect, in the folded state, the first shell is fitted with the second shell, and the second shell is fitted with the third shell. This is conducive to making the support device and the folding screen device lighter and thinner, and can also improve the user experience.

[0028] In a possible implementation of the first aspect, the ratio of the thickness of the first part to the thickness of the second part is greater than or equal to 4 / 5, and less than or equal to 1 / 5. The thickness of the first part can accommodate the first hinge portion of the first hinge mechanism, and the thickness of the second part can be as thin as to accommodate only the thickness of the display module of the folding screen. When the ratio of the thickness of the first part to the thickness of the second part is within the above range, while ensuring that the first part can have an installation space for the first hinge mechanism, the thickness of the second part can have an installation space for the folding screen. It can not only meet the requirements of the lightness and thinness of the support device and the folding screen device, but also meet the requirements of the installation space of the first hinge mechanism and the folding screen.

[0029] In a possible implementation manner of the first aspect, a difference between a thickness of the first part and a thickness of the third part is less than or equal to 0.3 millimeters.

[0030] In a second aspect, the present application further provides a supporting device, which includes a first shell, a second shell, a third shell, a first rotating shaft mechanism and a second rotating shaft mechanism.

[0031] The first shell has a first support plane, and the second shell has a second support plane. The second shell and the first shell are respectively located on both sides of the first rotating shaft mechanism, and are configured to rotate between the unfolded state and the folded state through the first rotating shaft mechanism. The third shell and the second shell are respectively located on both sides of the second rotating shaft mechanism, and are configured to rotate between the unfolded state and the folded state through the second rotating shaft mechanism. The third shell has a third support plane and a fifth surface that are arranged opposite to each other, and in the direction from one end close to the second rotating shaft mechanism to one end away from the second rotating shaft mechanism, the third support plane extends obliquely toward the direction close to the fifth surface. In the unfolded state, the third support plane, the second support plane and the first support plane are coplanar; in the folded state, the first shell, the second shell, and the third shell are stacked in sequence, the second support plane is opposite to the first support plane, and the second support plane is parallel to and faces the third support plane.

[0032] Since the supporting device provided in the embodiment of the present application includes the rotating shaft mechanism of any of the above technical solutions, the two can solve the same technical problem and achieve the same effect, which will not be elaborated here.

[0033] In a possible implementation manner of the second aspect, an angle between the third supporting plane and the fifth surface is less than or equal to 30 degrees.

[0034] In a third aspect, the present application further provides a supporting device, which includes a first shell, a second shell, a third shell, a first rotating shaft mechanism and a second rotating shaft mechanism.

[0035] The second shell and the first shell are respectively located on both sides of the first rotating shaft mechanism, and are configured to rotate between the unfolded state and the folded state through the first rotating shaft mechanism. The third shell and the second shell are respectively located on both sides of the second rotating shaft mechanism, and are configured to rotate between the unfolded state and the folded state through the second rotating shaft mechanism. The first shell has a first supporting plane and a first back surface that are arranged opposite to each other. In the direction from one end close to the first rotating shaft mechanism to one end away from the first rotating shaft mechanism, the first supporting plane extends obliquely toward the direction close to the first back surface, the second shell has a second supporting plane, and the third shell has a third supporting plane.

[0036] In the unfolded state, the third support plane, the second support plane and the first support plane are coplanar; in the folded state, the first shell, the third shell and the second shell are stacked in sequence, the first support plane faces the third shell, and the second support plane faces the third support plane.

[0037] In a possible implementation manner of the third aspect, an angle between the first supporting plane and the first back surface is less than or equal to 30 degrees.

[0038] Since the supporting device provided in the embodiment of the present application includes the rotating shaft mechanism of any of the above technical solutions, the two can solve the same technical problem and achieve the same effect, which will not be elaborated here.

[0039] In a fourth aspect, the present application also provides a folding screen device, which includes the supporting device and the folding screen mentioned above.

[0040] The folding screen includes a first display area, a second display area, a third display area, a fourth display area and a fifth display area. The fourth display area is connected between the first display area and the second display area, and the fifth display area is connected between the second display area and the third display area.

[0041] The first display area is supported and fixed on a first support plane arranged on the first shell, the second display area is supported and fixed on a second support plane of the second shell, the third display area is supported and fixed on a third support plane of the third shell, the fourth display area is supported on the first hinge mechanism, and the fifth display area is supported on the second hinge mechanism.

[0042] In a possible implementation of the fourth aspect, the folding screen device also includes a folding screen signal line and a circuit board. The circuit board is disposed in a third shell, one end of the folding screen signal line is fixed to and electrically connected to the circuit board, and the other end of the folding screen signal line is fixed to an edge of the third display area away from the second hinge mechanism and is electrically connected to the folding screen.

[0043] In a possible implementation of the fourth aspect, the folding screen device also includes a first group of electronic components, which are arranged in the second shell, and the first group of electronic components include batteries, and / or speakers, and / or motors.

[0044] In a possible implementation of the fourth aspect, the folding screen device also includes a first camera module, which is disposed in the second shell, and the light incident surface of the first camera module faces the second supporting plane of the second shell.

[0045] In a possible implementation of the fourth aspect, the folding screen device further includes a second camera module, the second camera module is disposed in the second housing, and a light incident surface of the second camera module faces a direction away from a second supporting plane of the second housing. The first housing has a first light-transmitting portion, the first display area has a second light-transmitting portion, and the second light-transmitting portion is directly opposite to the first light-transmitting portion in a thickness direction of the first housing; in the folded state, in the thickness direction of the first housing, the light incident surface of the camera module corresponds to the first light-transmitting portion.

[0046] In a possible implementation of the fourth aspect, the folding screen device also includes a third camera module, which is disposed in the first part of the first shell, and the light incident surface of the third camera module faces the first supporting plane of the first shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 A three-dimensional diagram of a folding screen device in an unfolded state provided by some embodiments of the present application;

[0048] Figure 2 A three-dimensional diagram of a folding screen device in an unfolded state provided by some other embodiments of the present application;

[0049] Figure 3a for Figure 2 A schematic diagram of a partial exploded structure of a folding screen device shown;

[0050] Figure 3b Based on Figure 3a A perspective view of the first housing in the support device shown;

[0051] Figure 4 for Figure 2 A schematic diagram of a structure of a folding screen device shown in FIG. 1 when the folding screen device is in a folded state;

[0052] Figure 5 for Figure 2 Another structural schematic diagram of the folding screen device shown is in a folded state;

[0053] Figure 6 for Figure 4The folding screen device shown in the figure omits the third housing and is in a folded state.

[0054] Figure 7 for Figure 6 A schematic diagram of the structure of the folding screen device when the first rotating shaft mechanism is in an unfolded state;

[0055] Figure 8 for Figure 7 The schematic diagram of the structure when the first rotating shaft mechanism is in a folded state;

[0056] Fig. 9 for Figure 8 The schematic diagram of the structure of the folding screen device shown is cut at plane P1;

[0057] Fig.10 for Figure 7 The structural schematic diagram of the folding screen device shown is cut along BB;

[0058] Fig.11 for Fig. 9 An enlarged view of the first main swing arm at the center C with its arc stroke shortened when in the folded state;

[0059] Fig.12 for Fig.10 An enlarged view of the first main swing arm at D in the middle, formed by shortening the arc when in the deployed state;

[0060] Fig.13 for Figure 7 The structural schematic diagram of the folding screen device shown is cut along CC;

[0061] Fig.14 is a schematic structural diagram of the second rotating mechanism changing between an unfolded state and a folded state;

[0062] Fig.15 A schematic diagram of the structure of the second rotating shaft mechanism provided in some embodiments of the present application when it is in a folded state;

[0063] Fig.16 A schematic diagram of the structure of a support device in a folded state provided in some embodiments of the present application;

[0064] Fig.17 A schematic diagram of the structure of the support device provided in some embodiments of the present application in an unfolded state;

[0065] Fig.18 A schematic diagram of a structure of a support device in a folded state provided in some other embodiments of the present application;

[0066] Fig.19 A schematic diagram of the structure of the support device provided in some embodiments of the present application in an unfolded state;

[0067] Fig. 20 A schematic diagram of the structure of the support device in some other embodiments of the present application in a folded state;

[0068] Fig.21 A schematic diagram of the structure of the support device in some other embodiments of the present application in a folded state;

[0069] Fig. 22 A schematic diagram of the structure of the support device in some other embodiments of the present application in a folded state;

[0070] Fig.23 A schematic diagram of the structure of a support device provided in some further embodiments of the present application;

[0071] Fig.24 for Fig.18 A schematic diagram of the structure of the support device in the unfolded state and the folded state;

[0072] Fig.25 A schematic diagram of the structure of the support device provided in some other embodiments of the present application when it is in a folded state;

[0073] Fig.26 A schematic diagram of the structure of the support device provided in some other embodiments of the present application when it is in a folded state;

[0074] Fig. 27 for Fig.26 A schematic diagram of the structure when the supporting device is in an unfolded state;

[0075] Fig.28 A schematic diagram of the structure of the support device provided in some further embodiments of the present application when it is in a folded state.

[0076] Reference numerals

[0077] 100. Folding screen devices;

[0078] 10. Folding screen; 11. First display area; 12. Second display area; 13. Third display area;

[0079] 14. fourth display area; 141. first transition section; 142. second transition section; 143. arc section;

[0080] 15. fifth display area; 16. sixth display area; 18. signal line;

[0081] 20. Support device; 21. First housing; 21a. First back cover; 21b. First middle frame; 21c. First middle plate; 21d. First frame; 21f. First connecting plate;

[0082] 211, first part; 211a, first surface; 211b, first side; 211c, first transition area; 212, second part; 212a, second surface; 213, first supporting plane; K1, first avoidance space;

[0083] 22, second shell; 222, third part; 222a, third surface; 222b, second side surface; 222c, second transition area; 223, fourth part; 223a, fourth surface; K2, second avoidance space; 224, second support plane;

[0084] 23, third housing; 231b, fifth surface; K3, third avoidance space; F1, first direction; 231a, third support plane; 31, first camera module; 32, second camera module; 33, third camera module;

[0085] 241, first rotating shaft mechanism; 2411, base; 2411a, upper base; 2411b, lower base; M4, fourth supporting plane;

[0086] 2412, first door panel; M5, fifth supporting plane; 2413, second door panel; M6, sixth supporting plane; 2414, third door panel; M7, seventh supporting plane; 2415, fourth door panel; M8, eighth supporting plane;

[0087] 2416, first main swing arm; 2417, second main swing arm; 2418, third main swing arm; 2419, fourth main swing arm;

[0088] 2411c, first arc groove; 2411b, second arc groove; C1, first overlapping portion; C2, second overlapping portion; L3, first overlapping amount; L4, second overlapping amount;

[0089] 2520, first auxiliary swing arm; 2521, second auxiliary swing arm; 2522, third auxiliary swing arm; 2523, fourth auxiliary swing arm;

[0090] 2524, transmission assembly; 2524a, first driving gear; 2524b, second driving gear;

[0091] 242, second rotating shaft mechanism; 2421, shaft cover; 2422, first door panel; 2423, second door panel; 2424, first connecting member; 2425, second connecting member; 2426, base; 2326a, upper base; 2426b, lower base; 2428, first main swing arm; 2429, second main swing arm. DETAILED DESCRIPTION

[0092] In the embodiments of the present application, the terms "exemplary" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a specific way.

[0093] In the embodiments of the present application, the terms "first" and "second" 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. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features.

[0094] In the description of the embodiments of the present application, the term "at least one" refers to one or more, and "plurality" refers to two or more. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single items or plural items. For example, at least one of a, b, or c can represent: a, b, c, ab, ac, bc, or abc, where a, b, and c can be single or multiple.

[0095] In the description of 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 the present application generally indicates that the associated objects before and after are in an "or" relationship.

[0096] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" 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. Among them, "fixed connection" means that the two are connected to each other and the relative position relationship remains unchanged after the connection. "Rotational connection" means that the two are connected to each other and can rotate relative to each other after the connection. "Sliding connection" means that the two are connected to each other and can slide relative to each other after the connection.

[0097] The directional terms mentioned in the embodiments of the present application, such as "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.

[0098] In the description of 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.

[0099] In the embodiment of the present application, the term "transmission connection" means that among the two connected components, the movement of one component can be transmitted to the other component, and the connection method between the two components includes but is not limited to at least one of the connection methods such as rotation connection, sliding connection, gear meshing transmission connection, sprocket transmission connection, and cam mechanism transmission connection.

[0100] The present application provides a folding screen device, which can be a user equipment (UE) or a terminal device, for example, the folding screen device can be a tablet computer (portable android device, PAD), a personal digital assistant (PDA), a handheld device with wireless communication function, a computing device, a vehicle-mounted device, a wearable device, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal in industrial control, a wireless terminal in self-driving, a wireless terminal in remote medical, a wireless terminal in smart grid, a wireless terminal in transportation safety, a wireless terminal in smart city, a wireless terminal in smart home, and other mobile terminals or fixed terminals. The form of the folding screen device is not specifically limited in the embodiments of the present application.

[0101] See also Figure 1 , Figure 1The three-dimensional diagram of the folding screen device 100 in the unfolded state provided for some embodiments of the present application, this embodiment and the following embodiments are exemplified by taking the folding screen device 100 as a handheld device with wireless communication function, which can be, for example, a mobile phone. 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 defined as the Y-axis direction, and the thickness direction of the folding screen device 100 is defined as 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 the like.

[0102] The folding screen device 100 includes a folding screen 10 and a supporting device 20 .

[0103] 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 microorganic light-emitting diode (microorganic light-emitting diode) screen, a quantum dot light-emitting diode (QLED) screen, a liquid crystal display (LCD), and the like.

[0104] The folding screen 10 has a display area for displaying image information. 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 display area 11, a second display area 12 and a fourth display area 14. The fourth display area 14 is connected between the first display area 11 and the second display area 12. Figure 1 In the folding screen device 100 shown, the folding screen 10 is in the unfolded state, and the first display area 11, the fourth display area 14, and the second display area 12 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 display area 11, the fourth display area 14, and the second display area 12 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.

[0105] The support device 20 is used to carry the folding screen 10. The support device 20 includes a first shell (also called a main shell) 21, a second shell (also called a sub-shell) 22, and a first hinge mechanism 241. The first shell 21 carries the first display area 11, and the second shell 22 carries the second display area 12. The first hinge mechanism 241 is connected between the first shell 21 and the second shell 22, and carries the fourth display area 14. The first hinge mechanism 241 is used to realize the rotation 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.

[0106] At least the fourth display area 14 of the folding screen 10 is a flexible screen structure. In this way, the fourth display area 14 can be bent and deformed after being subjected to external force, so that the folding screen 10 is Figure 1 The first display area 11 and the second display area 12 of the folding screen 10 can be a flexible screen structure, a hard screen structure, or a partially flexible screen structure and a partially hard screen structure, which is not specifically limited here.

[0107] The folding screen device 100 described above is a double-folding folding screen device 100, that is, the screen length is doubled by folding once, and the aspect ratio after unfolding is generally between 10:9 and 11:9, and the size is closer to a square. However, the applications of existing electronic devices are more suitable for the aspect ratio of candy-bar phones, that is, the existing aspect ratio between 16:10 and 18:9. As a result, for many applications that need to be used in landscape mode, the user experience has not been substantially improved.

[0108] In order to adapt to the size of most existing applications, it is necessary to further increase the length of the long side on the basis of double folding, so as to increase the display area and adapt to the use of most applications. The folding screen device 100 can further increase the length of the long side by folding twice or more times, that is, three folds or more folds. The following is an example of a three-fold folding screen device 100, but this does not represent a special limitation on the present application, that is, the folding screen device 100 can also be a folding screen device 100 of four folds, five folds, six folds, and so on.

[0109] In this way, the folding screen device 100 can adapt to the use of most applications while increasing the display area. In the folded state, the first shell 21, the second shell 22 and the third shell 23 of the folding screen device 100 are stacked. The thickness of the side of the first shell 21 close to the first rotating shaft mechanism is greater than the thickness of the side of the first shell 21 away from the first rotating shaft mechanism. The side of the first shell 21 away from the first rotating shaft mechanism forms a first avoidance space, and the first avoidance space can accommodate the fourth part of the second shell 22. When the total thickness of the support device 20 is constant, the thickness of the fourth part can extend into the first avoidance space to expand the space for the second shell 22 to accommodate the second rotating shaft mechanism. The second rotating shaft mechanism can reduce the difficulty of installing the second rotating shaft mechanism by expanding the installation space. Under the premise that the installation difficulty of the second rotating shaft mechanism is certain, that is, the installation space of the second rotating shaft mechanism is certain, through the above-mentioned setting, the folding screen device 100 can be further thinned, which is conducive to the lightweight development of the folding screen device 100. The application scenarios and specific structures of the above-mentioned folding screen device 100 and the support device 20 inside it are introduced in detail below.

[0110] See also Figure 2 and Figure 3a , Figure 2 A three-dimensional diagram of a folding screen device 100 in an unfolded state provided by some other embodiments of the present application, Figure 3a for Figure 2 A schematic diagram of a partial exploded structure of the folding screen device 100 is shown. Based on the above-mentioned double-folding folding screen device 100, the folding screen device 100 of this embodiment further includes a third display area 13 and a fifth display area 15 connected to each other, the fifth display area 15 is connected to a side of the second display area 12 away from the fourth display area 14, and the third display area 13 is connected to a side of the fifth display area 15 away from the second display area 12.

[0111] The supporting device 20 further includes a third housing 23 and a second hinge mechanism 242. The third housing 23 carries the third display area 13, and the second hinge mechanism 242 is connected between the second housing 22 and the third housing 23, and carries the fifth display area 15. The second hinge mechanism 242 is used to realize the rotation between the second housing 22 and the third housing 23 to support the folding screen 10 to fold between the unfolded state and the folded state.

[0112] At least the fifth display area 15 of the folding screen 10 is a flexible screen structure. In this way, the fifth display area 15 can be bent and deformed after being subjected to external force, so that the folding screen 10 can be folded from the unfolded state to the folded state. The third display area 13 of the folding screen 10 can be a flexible screen structure, a hard screen structure, or a partially flexible screen structure and a partially hard screen structure, which is not specifically limited here.

[0113] In the above embodiment, optionally, the first housing 21 includes a middle frame and a back cover connected together, the folding screen 10 can be carried on the middle frame of the first housing 21, the back cover is located on the side of the middle frame away from the folding screen 10, and the back cover can be replaced by a display screen (such as an LCD display screen). The second housing 22 includes a middle frame and a back cover connected together, the folding screen 10 can be carried on the middle frame of the first housing 22, and the back cover is located on the side of the middle frame away from the folding screen 10. The third housing 23 includes a middle frame and a back cover connected together, the folding screen 10 can be carried on the middle frame of the third housing 23, and the back cover is located on the side of the middle frame away from the folding screen 10.

[0114] A receiving cavity is formed between the first middle frame of the first shell 21 and the first back cover, and the receiving cavity is used to receive electronic components such as a main board, a camera module, and a battery. The receiving cavity of the second shell is used to receive electronic components such as a sub-board, a speaker module, and a battery. On this basis, the first shell 21 can be connected to the first rotating shaft mechanism 241 with the aid of the first middle frame, or it can be connected to the first rotating shaft mechanism 241 with the aid of the first back cover. The following embodiments are described by taking the example of the first shell 21 being connected to the first rotating shaft mechanism 241 with the aid of the first middle frame.

[0115] The second housing 22 can be connected to the first rotating shaft mechanism 241 by means of the second middle frame, or by means of the second back cover. The following embodiments are described by taking the second housing 22 being connected to the first rotating shaft mechanism 241 by means of the second middle frame as an example. Similarly, the following embodiments are described by taking the third housing 23 being connected to the second rotating shaft mechanism 242 by means of the second middle frame as an example.

[0116] The specific structure of the first housing 21 is described below by taking the first housing 21 as an example. Figure 3b , Figure 3b Based on Figure 3a The perspective view of the first housing 21 in the supporting device 20 is shown. The first housing 21 includes a first back cover 21a and a first middle frame 21b.

[0117] The first back cover 21a is in the shape of a flat plate. For example, the first back cover 21a is in the shape of a rectangular flat plate or a rounded rectangular flat plate. Of course, in other examples, the first back cover 21a can also be in the shape of a semicircular flat plate, a diamond flat plate, an oblong flat plate, an ellipse or a special shape. The material of the first back cover 21a includes but is not limited to glass, plastic and metal.

[0118] The first middle frame 21b includes a first middle plate 21c and a first frame 21d. The first middle plate 21c is stacked and spaced apart from the first back cover 21a. Specifically, the shape of the first middle plate 21c is adapted to the shape of the first back cover 21a. The material of the first middle plate 21c includes but is not limited to metal, plastic, and a combination of the two.

[0119] The first frame 21d is arranged around the edge of the first middle plate 21c and the first back cover 21a. It is fixedly connected to the first middle plate 21c and the first back cover 21a to define a first installation space (not shown) with the first middle plate 21c and the first back cover 21a. The first installation space can be used to accommodate batteries, circuit boards, functional devices, etc.

[0120] In some examples, the first frame 21d and the first middle plate 21c are integrally formed, which helps to improve the connection strength between the first frame 21d and the first middle plate 21c, simplify the processing technology, and reduce the assembly cost.

[0121] In other examples, the connection method between the first frame 21d and the first middle plate 21c includes but is not limited to gluing, welding, clamping or screw connection, etc. This arrangement can simplify the mold structure of the first frame 21d and the first middle plate 21c, and facilitate the independent processing and manufacturing of the first frame 21d and the first middle plate 21c.

[0122] In some examples, the connection between the first frame 21d and the first back cover 21a includes but is not limited to gluing, clamping or screw connection, etc. This arrangement can simplify the molds of the first frame 21d and the first back cover 21a, and facilitate the independent processing and manufacturing of the first frame 21d and the first back cover 21a.

[0123] The material of the first frame 21d includes but is not limited to metal, plastic, and a combination of the two.

[0124] Specifically, the first frame 21d and the first middle plate 21c are an integral structure, so that the first middle frame 21b is formed as an integrally formed part. For example, the first frame 21d and the first middle plate 21c are processed by injection molding, thereby simplifying the processing technology and reducing the manufacturing cost.

[0125] Please continue reading Figure 3b The first middle frame 21b further includes two first extension plates 214. The first extension plates 214 are in the shape of a flat plate. The two first extension plates 214 are located on one side of the first middle plate 21c close to the first rotating shaft mechanism 241. They are arranged opposite to each other in the direction where the pivot axis of the first rotating shaft mechanism 241 is located (i.e., the Y-axis direction). Exemplarily, the two first extension plates 214 are arranged in parallel.

[0126] The two first extension plates 214 correspond to and are connected to the two ends of the first frame 21d along the circumferential direction of the first middle plate 21c, and a part of the first hinge mechanism 241 is located between the two first extension plates 214. In this way, the two first extension plates 214 can be used to shield the first hinge mechanism 241, which is conducive to ensuring the consistency of the appearance of the foldable folding screen device 100 at least to a certain extent.

[0127] In some examples, in order to improve the connection reliability between the first extension plate 214 and the first frame 21d and simplify the processing technology of the first middle frame 21b, the first extension plate 214 and the first frame 21d are integrally formed. Of course, the present application is not limited thereto, and in other examples, the first extension plate 214 can also be fixed to the first frame 21d by gluing, clamping, welding or screw connection.

[0128] Please continue reading Figure 3b , the first middle frame 21b also includes a first connecting plate 21f. The first connecting plate 21f is formed in a flat plate shape. The material of the first connecting plate 21f includes but is not limited to metal, plastic and a combination of the two. The first connecting plate 21f is connected to the end of the first frame 21d away from the folding screen 10. And the first connecting plate 21f is connected between the two first extension plates 214 to define a fixed space with the two first extension plates 214 and the first frame 21d, and a part of the first rotating shaft mechanism 241 is located in the fixed space. In this way, it is not only convenient to fix the first rotating shaft mechanism 241, but also the hiding effect of the first rotating shaft mechanism 241 can be further improved.

[0129] In some examples, in order to improve the connection reliability of the first connecting plate 21f, the first frame 21d and the first extension plate 214, and to simplify the processing technology, the first connecting plate 21f, the first frame 21d and the first extension plate 214 are an integrally formed part. Of course, the present application is not limited thereto. In other examples, the first connecting plate 21f can also be fixed to the first frame 21d by gluing, clamping, welding or screw connection. The first connecting plate 21f can also be fixed to the first extension plate 214 by gluing, clamping, welding or screw connection.

[0130] Specifically, in order to simplify the processing technology of the first middle frame 21b, reduce the manufacturing cost, and improve the structural strength of the first middle frame 21b, the first middle frame 21b is an integrally formed part.

[0131] The structures of the second shell 22 and the third shell 23 are similar to those of the first shell 21 , and are not described in detail herein.

[0132] The following is an introduction to the shape of the folding screen device 100 when it is in a folded state. According to the different folding methods of the first hinge mechanism 241 and the second hinge mechanism 242, the three-fold folding screen device 100 after folding mainly includes two types, one is a Z-shaped folding shape, and the other is a G-shaped folding shape. The two folding methods are described in detail below.

[0133] The Z-shaped folding form is introduced in detail below.

[0134] See also Figure 4 , Figure 4 for Figure 2 A structural schematic diagram of the folding screen device 100 shown in the folding state, and the folding screen 10 in the folding screen device 100 is also in a folding state. When the folding screen 10 is in the folding state, the first display area 11, the second display area 12 and the third display area 13 of the folding screen 10 are approximately parallel. It should be noted that the angle between the first display area 11 and the second display area 12 is within 30°, and the first display area 11 and the second display area 12 can be considered to be approximately parallel. The angle between the second display area 12 and the third display area 13 is within 30°, and the second display area 12 and the third display area 13 can be considered to be approximately parallel. In other words, when "parallel" appears again in this embodiment and the following embodiments, it is parallel including a certain error, and is not limited to absolute parallelism. The error within 30° can be considered to be approximately parallel, and it will not be repeated again in the following text.

[0135] When the supporting device 20 is in the folded state, the first shell 21, the second shell 22 and the third shell 23 are stacked in sequence, the first shell 21 is approximately parallel to the second shell 22, and the second shell 22 is approximately parallel to the third shell 23. The first hinge mechanism 241 is an outer folding hinge mechanism. In the folded state, the first display area 11 is located on the outer surface of the first shell 21, and the second display area 22 is located on the outer surface of the second shell 22. "The outer surface of the first shell" refers to the surface of the first shell 21 facing away from the second shell 22 in the folded state, and "the outer surface of the second shell" refers to the surface of the second shell 22 facing away from the first shell 21 in the folded state. The first display area 11 and the second display area 12 are arranged opposite to each other, and "opposite to each other" means that the display surface of the first display area 11 and the display surface of the second display area 12 are opposite to each other.

[0136] The second hinge mechanism 242 is an inner folding hinge mechanism, and in the folded state, the third display area 13 is located on the inner surface of the third shell 23. The "inner surface of the third shell" refers to the surface of the third shell 22 facing the second shell 22 in the folded state. The second display area 12 and the third display area 13 are arranged opposite to each other, and "opposite" means that the display surface of the first display area 11 and the display surface of the second display area 12 face each other.

[0137] In this way, the extension path of the folding screen 10 in the folded state is approximately Z-shaped, that is, Figure 4The extension path of the dotted line L1 in . Therefore, it is also called a Z-shaped folding form. When the folding screen device 100 is in a folded state, the second shell 22 and the third shell 23 are protected outside the second display area 12 and the third display area 13, and the second display area 12 and the third display area 13 are invisible to the user, which can prevent the second display area 12 and the third display area 13 from being scratched by hard objects. In the folded state, the first display area 11 is located outside the first shell 11, which is convenient for users to quickly view and can be used without opening. The folding screen device 100 is reduced in size by folding twice, which is convenient to carry.

[0138] The G-shaped folding form is introduced in detail below.

[0139] See also Figure 5 , Figure 5 for Figure 2 Another structural schematic diagram of the folding screen device 100 shown in the folding state. The folding screen 10 in the folding screen device 100 is also in a folding state. When the folding screen 10 is in a folded state, the first display area 11, the third display area 13 and the second display area 12 of the folding screen 10 are approximately parallel. Similarly, when the supporting device 20 is in a folded state, the first shell 21, the third shell 23 and the second shell 22 are stacked in sequence, the first shell 21 is approximately parallel to the third shell 23, and the third shell 23 is approximately parallel to the second shell 22. It is worth noting that one of the differences between the G-shaped folding form and the above-mentioned Z-shaped folding form is that, in the folded state, the positions of the second shell 22 and the third shell 23 are different. When the Z-shaped folding form is in the folded state, the second shell 22 is the middle layer, and when the G-shaped folding form is in the folded state, the third shell 23 is the middle layer. The first rotating shaft mechanism 241 is an inner folding rotating shaft mechanism, and in the folded state, the first display area 11 faces the third shell 23. The second hinge mechanism 242 is an inner folding hinge mechanism, and in the folded state, the third display area 23 is located on the inner surface of the third shell 23. The "inner surface of the third shell" refers to the surface of the third shell 22 facing the second shell 22 in the folded state. The third display area 13 and the second display area 12 are arranged opposite to each other, and "opposite" means that the display surface of the third display area 13 and the display surface of the second display area 12 face each other.

[0140] In this way, the extension path of the folding screen 10 in the folded state is approximately G-shaped, that is, Figure 5 The extension path of the dotted line L2 in FIG. Therefore, it is also called a G-shaped folding form. When the folding screen device 100 is in a folded state, the first display area 11, the second display area 12, and the third display area 13 are invisible to the user, which can prevent the first display area 11, the second display area 12, and the third display area 13 from being scratched by hard objects. The folding screen device 100 is reduced in size by folding twice, which is convenient to carry.

[0141] The above-mentioned G-shaped folding screen device 100 can also include a sixth display area 16. The sixth display area 16 is arranged on the surface of the first shell 21 facing away from the second shell 22. The sixth display area 16 can be used as the external screen of the folding screen device 100. In some application scenarios, the user can use the folding screen device 100 directly through the sixth display area 16 without unfolding it, which is more convenient and quick.

[0142] In summary, the first hinge mechanism 241 and the second hinge mechanism 242 can realize different forms of the folding screen device in the folded state through the folding forms of inward folding and outward folding, specifically including the above-mentioned Z-shaped folding form and the G-shaped folding form. In order to improve the user experience, the folding screen device 100 tends to be lighter and thinner. The above-mentioned folding screen device with two folds has a stronger demand for thinning. However, the current folding screen device 100 needs to ensure the installation space of the hinge mechanism. The thickness of the folding screen device 100 has been thinned to the limit. If it continues to be thinned, it will cause the hinge mechanism to work unstable. The types of hinge mechanisms mainly include inward folding hinge mechanisms and outward folding hinge mechanisms. The following explains in detail the reasons why the hinge mechanism restricts the thinning of the folding screen device 100 according to the different types of hinge mechanisms.

[0143] The reasons why the outer folding axis mechanism restricts the thinning of the folding screen device 100 and the specific structure of the outer folding axis mechanism are described in detail below. The outer folding axis mechanism is the first axis mechanism 241 in the above-mentioned Z-shaped folding form. The outer folding axis mechanism is described below by taking the first axis mechanism 241 as an example, but this does not represent a special limitation on the present application.

[0144] When the folding screen device 100 in this embodiment is in the folded state, the folding screen 10 is located outside the supporting device 20. Figure 6 , Figure 6 for Figure 4 The folding screen device 100 shown omits the structural schematic diagram when the third shell 23 is in a folded state. The folding screen 10 in the folding screen device 100 is also in a folded state. The first display area 11 and the second display area 12 of the folding screen 10 are approximately parallel and opposite to each other, that is, the angle between the first display area 11 and the second display area 12 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 achieved with the help of one of the first display area 11 and the second display area 12.

[0145] In some embodiments, when the folding screen 10 is in the folded state, please continue to refer to Figure 6, the fourth display area 14 is folded into a U-shape. It is understandable that when the folding screen device 100 is in the folded state, the fourth display area 14 of the folding screen 10 can also be folded into other shapes according to actual needs, and this application does not limit this.

[0146] See also Figure 7 , Figure 7 for Figure 6 The first hinge mechanism 241 in the folding screen device 100 is a schematic diagram of the structure when it is in the unfolded state. The first hinge mechanism 241 includes a base 2411, a first door panel 2412, a second door panel 2413, a third door panel 2414 and a fourth door panel 2415. It can be understood that Figure 7 Only some components of the first rotating shaft mechanism 241 are schematically shown, and the actual shapes, sizes, positions and structures of these components are not subject to the present invention. Figure 7 restrictions.

[0147] The base 2411 includes an upper base 2411a and a lower base 2411b. The base 2411 is used to realize the assembly of other components in the first hinge mechanism 241, and is used to support the fourth display area 14 of the folding screen 10. Specifically, the base 2411 is in the shape of an elongated strip. The length direction of the base 2411 is parallel to the Y-axis direction, the width direction of the base 2411 is parallel to the X-axis direction, and the thickness direction of the base 2411 is parallel to the Z-axis direction. The base 2411 includes a fourth support plane M4, and the base 2411 supports a portion of the fourth display area 14 with the help of the fourth support plane M4.

[0148] The first door panel 2412 is located on one side of the base 2411, and can rotate between an unfolded state and a folded state relative to the base 2411. The first door panel 2412 is in the shape of a long strip, and the length direction of the first door panel 2412 is parallel to the Y-axis direction. The rotation axis of the first door panel 2412 is parallel to the Y-axis. The first hinge mechanism 241 can be fixedly connected to the first shell 21 with the aid of the first door panel 2412. Exemplarily, the first door panel 2412 can be fixedly connected to the first shell 21 by bonding, clamping, welding, screw connection, etc. The first door panel 2412 includes a fifth support plane M5, and the first door panel 2412 supports a portion of the fourth display area 14 with the aid of the fifth support plane M5.

[0149] The second door panel 2413 is located on the other side of the base 2411 and can rotate between an unfolded state and a folded state relative to the base 2411. The second door panel 2413 and the first door panel 2412 are symmetrically arranged relative to the base 2411. The structure and connection method of the second door panel 2413 are consistent with those of the first door panel 2412, and are not repeated here. The second door panel 2413 includes a sixth support plane M6. The second door panel 2413 supports a portion of the fourth display area 14 by means of the sixth support plane M6.

[0150] In some embodiments, the fourth display area 14 may be fixedly connected to the fourth supporting plane M4 , the fifth supporting plane M5 , and the sixth supporting plane M6 by gluing.

[0151] Please continue reading Figure 7 , the third door panel 2414 is located between the first door panel 2412 and the base 2411. The third door panel 2414 is rotatably connected to the first door panel 2412 and the third door panel 2414 is also rotatably connected to the base 2411. The fourth door panel 2415 is located between the second door panel 2413 and the base 2411. The fourth door panel 2415 is rotatably connected to the second door panel 2413 and the fourth door panel 2415 is also rotatably connected to the base 2411.

[0152] When the first shell 21 rotates under the action of an external force, the first door panel 2412 can rotate with the first shell 21, and then drive the third door panel 2414 to rotate relative to the base 2411, so as to achieve relative rotation between the first shell 21 and the base 2411. When the second shell 22 rotates under the action of an external force, the second door panel 2413 can rotate with the second shell 22, and then drive the fourth door panel 2415 to rotate relative to the base 2411, so as to achieve relative rotation between the second shell 22 and the base 2411, and then achieve relative rotation between the first shell 21 and the second shell 22, so as to switch the folding screen device 100 between the unfolded state and the folded state.

[0153] Please continue reading Figure 7 , the third door panel 2414 includes a seventh support plane M7, and the fourth door panel 2415 includes an eighth support plane M8. When the first hinge mechanism 241 is in the unfolded state, the first door panel 2412, the second door panel 2413, the third door panel 2414, and the fourth door panel 2415 are all in the unfolded state, and the fourth support plane M4, the fifth support plane M5, the sixth support plane M6, the seventh support plane M7, and the eighth support plane M8 are arranged roughly on the same plane, so that the fourth display area 14 supported thereon is in the unfolded state, and the flatness of the fourth display area 14 is improved. When the first hinge mechanism 241 is in the unfolded state, the support device 20 including the first hinge mechanism 241 and the folding screen device 100 including the support device 20 are also in the unfolded state, and the angle between the first shell 21 and the second shell 22, and the angle between the first display area 11 and the second display area 12 are roughly 180°.

[0154] See also Figure 8 , Figure 8 for Figure 7The schematic diagram of the structure when the first rotating shaft mechanism 241 is in the folded state. When the first rotating shaft mechanism 241 is in the folded state, the first door panel 2412, the second door panel 2413, the third door panel 2414, and the fourth door panel 2415 are all in the folded state, the fifth support plane M5 and the sixth support plane M6 are arranged opposite to each other, and the seventh support plane M7 and the eighth support plane M8 are arranged obliquely relative to the fourth support plane M4.

[0155] For details, please continue to refer to Figure 8 , when the first hinge mechanism 241 is folded between the unfolded state and the folded state, the angle at which the third door panel 2414 and the fourth door panel 2415 rotate relative to the base 2411 is the first angle α1, and the angle at which the first door panel 2412 and the second door panel 2413 rotate relative to the base 2411 is the second angle α2, and the first angle α1 is less than the second angle α2. Exemplarily, the first angle α1 is 45 degrees, and the second angle α2 is 90 degrees. In this way, the first hinge mechanism 241 can be folded into a U shape, and the fourth display area 14 supported on the first hinge mechanism 241 can be folded into a U shape, which can reduce the stress and pulling of the folding screen 10 during the folding process. When the first hinge mechanism 241 is in the folded state, the support device 20 including the first hinge mechanism 241 and the foldable device including the support device 20 are also in the folded state, and the angle between the first shell 21 and the second shell 22, and the angle between the first display area 11 and the second display area 12 are also approximately 360°.

[0156] In this embodiment, the number of the third door panel 2414 and the fourth door panel 2415 are both one, and it is understood that in other embodiments, the number of the third door panel 2414 and the fourth door panel 2415 may also be multiple. Alternatively, in other embodiments, the first rotating shaft mechanism 241 may also not include the third door panel 2414 and the fourth door panel 2415.

[0157] In order to ensure that the folding screen device 100 can be maintained in the unfolded state and the folded state to improve the user experience, the hinge mechanism also includes a damping structure. The damping structure is used to apply damping to the first shell 21 and the second shell 22 when the folding screen device 100 is in the unfolded state, so that the folding screen device 100 remains in the unfolded state. The damping structure is also used to apply damping to the first shell 21 and the second shell 22 when the folding screen device 100 is in the folded state, so that the folding screen device 100 remains in the folded state.

[0158] Please return to Figure 7, the first rotating shaft mechanism 241 also includes a swing arm connected between adjacent door panels and between the door panels and the base 2411. Specifically, the first rotating shaft mechanism 241 also includes a first main swing arm 2416, a second main swing arm 2417, a third main swing arm 2418 and a fourth main swing arm 2419, the first main swing arm 2416 and the second main swing arm 2417 are arranged on one side of the base 2411 and arranged along the direction of the Y axis. The third main swing arm 2418 and the fourth main swing arm 2419 are arranged on the other side of the base 2411 and arranged along the direction of the Y axis. The first main swing arm 2416 is connected between the third door panel 2414 and the base 2411 to rotatably connect the third door panel 2414 to the base 2411. The second main swing arm 2417 is connected between the first door panel 2412 and the third door panel 2414 to rotatably connect the first door panel 2412 to the third door panel 2414. The third main swing arm 2418 is connected between the fourth door panel 2415 and the base 2411 to rotatably connect the fourth door panel 2415 to the base 2411. The fourth main swing arm 2419 is connected between the second door panel 2413 and the fourth door panel 2415 to rotatably connect the second door panel 2413 to the fourth door panel 2415.

[0159] Please continue reading Figure 7 The first main swing arm 2416, the second main swing arm 2417, the third main swing arm 2418 and the fourth main swing arm 2419 are usually Figure 7 The arc rib structure shown in . Compared with the cylindrical shaft structure, the arc rib shaft structure is more conducive to the thinning development of the first shaft mechanism 241. In the above structure, since the structure and connection method of the first main swing arm 2416 are consistent with the structure and connection method of the third main swing arm 2418, the structure and connection method of the second main swing arm 2417 are consistent with the structure and connection method of the fourth main swing arm 2419. Therefore, the first main swing arm 2416 and the fourth main swing arm 2419 are used as examples for explanation in the following text.

[0160] Please also read Fig. 9 and Fig.10 , Fig. 9 for Figure 8 The structure schematic diagram of the folding screen device 100 shown is cut at plane P1; Fig.10 for Figure 7The schematic diagram of the structure of the folding screen device 100 shown is cut along BB. Among them, plane P1 is the plane where the first main swing arm 2416 and the fourth main swing arm 2419 are located. A first arc groove 2411c that matches the first main swing arm 2416 is provided on the base 2411, and a second arc groove 2411b that matches the fourth main swing arm 2419 is provided on the second door panel 2413. When the folding screen device 100 is switched between the folded state and the unfolded state, the first main swing arm 2416 slides in the first arc groove 2411c, and the fourth main swing arm 2419 slides in the second arc groove 2411b. Specifically, when the folding screen device 100 is in the folded state, the first main swing arm 2416 is located in the first arc groove 2411c, and the fourth main swing arm 2419 is located in the second arc groove 2411b.

[0161] When the folding screen device 100 is switched from the folded state to the unfolded state, the first main swing arm 2416 slides to the outside of the first arc groove 2411c, and the fourth main swing arm 2419 slides to the outside of the second arc groove 2411b. When the folding screen device 100 is in the unfolded state, part of the first main swing arm 2416 is located in the first arc groove 2411c, and part of the fourth main swing arm 2419 is located in the second arc groove 2411b.

[0162] The first main swing arm 2416 has a first overlap portion C1, which is the portion of the first main swing arm 2416 used to overlap with the base 2411, that is, the first overlap portion C1 refers to the portion of the first main swing arm 2416 located in the first arc groove 2411c. There is a certain first overlap amount L3 between the first overlap portion C1 and the base 2411, and the first overlap amount L3 refers to the arc length of the first overlap portion C1. The fourth main swing arm 2419 has a second overlap portion C2, which is the portion of the fourth main swing arm 2419 used to overlap with the fourth door panel 2415, that is, the second overlap portion C2 refers to the portion of the fourth main swing arm 2419 located in the second arc groove 2411b. There is a certain second overlap amount L4 between the second overlap portion C2 and the fourth door panel 2415, and the second overlap amount L4 refers to the arc length of the second overlap portion C21.

[0163] When the folding screen device 100 moves from the folded state to the unfolded state, the first overlap amount L3 and the second overlap amount L4 gradually decrease; when the folding screen device 100 moves from the unfolded state to the folded state, the first overlap amount L3 and the second overlap amount L4 gradually increase. During the movement of the folding screen device 100 between the unfolded state and the folded state, the minimum overlap amount is the overlap amount when the folding screen device 100 is in the unfolded state. The first overlap portion C1 and the second overlap portion C2 need to meet the minimum overlap amount, otherwise the first main swing arm 2416 is easy to come out of the base 2411, and the fourth main swing arm 2419 is easy to come out of the fourth door panel 2415.

[0164] As the folding screen device 100 becomes thinner and lighter, the thickness of the folding screen device 100 has reached a limit and is difficult to be further reduced. If the folding screen device 100 is further reduced in thickness, the arc travel of the first main swing arm 2416 and the fourth main swing arm 2419 will be shortened accordingly. Fig.11 and Fig.12 , Fig.11 for Fig. 9 An enlarged view of the first main swing arm 2416 at the center C in a shortened arc stroke when in a folded state; Fig.12 for Fig.10 An enlarged view of the first main swing arm 2416 at D in the middle, which shortens the arc when in the unfolded state. The rotation angle of the third door panel 2414 relative to the base 2411 determines the design size of the center angle of the first main swing arm 2416. The larger the rotation angle of the third door panel 2414 relative to the base 2411, the larger the center angle of the first main swing arm 2416 is designed to be. Under the premise of a certain radius, the longer the length of the first main swing arm 2416, the greater the thickness of the first main swing arm 2416 in the Z-axis direction. After the arc stroke of the first main swing arm 2416 is shortened, in the thickness direction, the first main swing arm 2416 occupies the thickness of the base 2411, which is thinner than the thickness before the arc stroke of the first main swing arm 2416 is shortened. In this way, the further thinning of the folding screen device 100 can be achieved after the arc stroke of the first main swing arm 2416 is shortened. However, after the arc stroke of the first main swing arm 2416 is reduced, the first overlap amount L3 is also reduced, and the folding screen device 100 is very easy to fall out of the base 2411 when in the unfolded state.

[0165] Similarly, after the fourth main swing arm 2419 shortens its arc stroke, the second overlap amount L4 between the fourth main swing arm 2419 and the fourth door panel 2415 also decreases, and the above-mentioned problem will also occur. The detailed reasons are the same as those of the first main swing arm 2416, and will not be repeated here. And the second main swing arm 2417 and the third main swing arm 2418 mentioned above will also have the problem of insufficient overlap after shortening their arc strokes, thereby causing the failure of the first rotating shaft mechanism 241.

[0166] Please return to Figure 7The first rotating shaft mechanism 241 further includes a first auxiliary swing arm 2520, a second auxiliary swing arm 2521, a third auxiliary swing arm 2522 and a fourth auxiliary swing arm 2523. The first auxiliary swing arm 2520 and the first main swing arm 2416 are symmetrically arranged on the base 2411, the second auxiliary swing arm 2521 and the second main swing arm 2417 are symmetrically arranged on the base 2411, the third auxiliary swing arm 2522 and the third main swing arm 2418 are symmetrically arranged on the base 2411, and the fourth auxiliary swing arm 2523 and the fourth main swing arm 2419 are symmetrically arranged on the base 2411. Therefore, the thinning of the first rotating shaft mechanism 241 will also be subject to the arc travel of the first auxiliary swing arm 2520, the second auxiliary swing arm 2521, the third auxiliary swing arm 2522 and the fourth auxiliary swing arm 2523, and the reason is the same as that of the first main swing arm 2416 and the fourth main swing arm 2419, which will not be repeated here.

[0167] In addition, the first rotating shaft mechanism 241 further includes a transmission assembly 2524. For details, see Fig.13 , Fig.13 for Figure 7 The schematic diagram of the structure of the folding screen device 100 cut along CC is shown. The transmission assembly 2524 is arranged on the base 2411, and is transmission-connected between the third door panel 2414 and the fourth door panel 2415, so that when the first shell 21 rotates relative to the base 2411, the second shell 22 rotates synchronously relative to the base 2411, so as to ensure the symmetry and synchronization of the folding screen 10 electronic device during the folding and unfolding process, and enhance the consumer's experience.

[0168] The transmission assembly 2524 includes a first driving gear 2524a and a second driving gear 2524b. The first driving gear 2524a is relatively fixed to the third door plate 2414, and the second driving gear 2524b is relatively fixed to the fourth door plate 2415. Here, relatively fixed means that the relative positions of the two are fixed and the first driving gear 2524a and the second driving gear 2524b are meshed with each other. When one of the third door plate 2414 and the fourth door plate 2415 rotates relative to the base 2411, the other will rotate synchronously with the base 2411, thereby realizing the synchronous rotation of the first shell 21 and the second shell 22. Fig.13 In the illustrated embodiment, the diameters of the first driving gear 2524a and the second driving gear 2524b are the same, and the diameters of the first driving gear 2524a and the second driving gear 2524b are defined as d3.

[0169] In order to achieve the thinning of the folding screen device 100, if the thickness of the shell is further thinned, the diameters of the first drive gear 2524a and the second drive gear 2524b located in the fourth shell will also be reduced, and the tooth groove depths of the first drive gear 2524a and the second drive gear 2524b will also be reduced. The problem that follows is that the reduction in the diameters of the first drive gear 2524a and the second drive gear 2524b will cause the first drive gear 2524a and the second drive gear 2524b to be unable to mesh in sequence, which will in turn affect the synchronization of the third door panel 2414 and the fourth door panel 2415 when they rotate. The reason why the first drive gear 2524a and the second drive gear 2524b cannot mesh in sequence is that in order to prevent the internal stress of the fourth part from being too large when the folding screen 10 is in the folded state and reduce the service life of the folding screen 10, the radius of the arc segment 143 of the fourth part of the folding screen 10 must be large enough, so the axial spacing between the first drive gear 2524a and the second drive gear 2524b must be sufficient. Therefore, while ensuring the axial distance between the first drive gear 2524a and the second drive gear 2524b, reducing the size of the first drive gear 2524a and the second drive gear 2524b will cause the gears in the transmission assembly 2524 to be unable to mesh in sequence, thereby causing the third door panel 2414 and the fourth door panel 2415 to be unable to rotate synchronously, affecting the user's experience. In addition, reducing the tooth groove depth of the first drive gear 2524a and the second drive gear 2524b will also affect the structural strength of the transmission assembly 2524.

[0170] In summary, the thinning of the first hinge mechanism 241 is one of the main factors restricting the thinning of the folding screen device 100. Simply put, it is mainly because the thinning of the first hinge mechanism 241 will cause the swing arms inside it to disengage from the base 2411 and the door panel, causing the first hinge mechanism 241 to fail.

[0171] The following is a detailed explanation of the reason why the inner folding axis mechanism restricts the thinning of the folding screen device 100. The inner folding axis mechanism is the second axis mechanism 242 in the above-mentioned Z-shaped folding form, and the first axis mechanism 241 and the second axis mechanism 242 in the above-mentioned G-shaped folding form. The following is an example of the inner folding axis mechanism being the second axis mechanism 242, but this does not represent a special limitation on the present application.

[0172] Please also read Fig.14 and Fig.15 , Fig.14 A schematic diagram of the structure of the second rotating shaft mechanism 242 provided in some embodiments of the present application when it is in an unfolded state; Fig.15The second rotating shaft mechanism 242 provided in some embodiments of the present application is a schematic diagram of a structure in which the second rotating shaft mechanism 242 is in a folded state. In this embodiment, the second rotating shaft mechanism 242 includes a base, a shaft cover 2421, a first door plate 2422, a second door plate 2423, a first connecting member 2424 and a second connecting member 2425.

[0173] Understandably, Fig.14 Only some components included in the second rotating mechanism are schematically shown, and the actual shape, actual size, actual position and actual structure of these components are not limited by the figure. Among them, the structural shapes of the base, the first door panel 2422 and the second door panel 2423 are similar to the base, the third door panel and the fourth door panel in the above-mentioned first rotating shaft mechanism, and will not be repeated in the following. The structural shapes of the first connecting member 2424 and the second connecting member 2425 are similar to the first door panel 2422 and the second door panel 2423 of the above-mentioned first rotating shaft mechanism, and will not be repeated in the following.

[0174] The shaft cover 2421 is located on the side of the housing away from the folding screen 10. The shaft cover 2421 is an appearance part of the hinge mechanism (i.e., a part visible from the outside), and is used to cover the moving parts in the second hinge mechanism 242 to ensure the appearance of the folding screen device 100 and prevent the relative movement between the moving parts in the second hinge mechanism 242 and the base from being disturbed by the outside world.

[0175] Generally, the shaft cover 2421 is fixedly connected to the base. This connection method is stable and simple to implement, and the relative position of the shaft cover 2421 and the base is fixed. During the folding process of the folding screen device 100, the shaft cover 2421 always covers the back side of the base and the moving parts connected to the base, so that the relative movement between the moving parts in the rotating shaft mechanism and the base can be effectively prevented from being disturbed by the outside world.

[0176] The first door plate 2422 is hinged on the shaft cover 2421. The first connecting member 2424 is hinged on the first door plate 2422. The first connecting member 2424 is used to be fixedly connected to the second housing 22 by gluing, threading, riveting, etc.

[0177] The second door plate 2423 is hinged on the shaft cover 2421. The second connecting member 2425 is hinged on the second door plate 2423. The second connecting member 2425 is used to be fixedly connected to the third housing 23 by gluing, threading, riveting, etc.

[0178] Please continue reading Fig.14 On the basis of the above, the second rotating shaft mechanism 242 also includes a first main swing arm 2428 and a second main swing arm 2429.

[0179] The base provides a position reference in the rotating shaft mechanism, and the base includes an upper base 2326a and a lower base 2426b. The first main swing arm 2428 and the second main swing arm 2429 are rotatably connected to the base, and the first main swing arm 2428 and the second main swing arm 2429 can rotate relative to the base to enable the folding screen device 100 to move between the unfolded state and the folded state. At the same time, the base is also used to support part of the folding screen 10.

[0180] With the development of the folding screen device 100, the thickness of the folding screen device 100 has reached a limit and cannot be further reduced. The first main swing arm 2428 and the second main swing arm 2429 described here are similar to the first main swing arm 2428 and the second main swing arm 2429 in the first rotating shaft mechanism described above. They both adopt the structure of arc ribs, which is conducive to the thinness of the folding screen device 100, and will not be described in detail here.

[0181] The first main swing arm 2428 has a first overlap portion C1, and the second main swing arm 2429 has a second overlap portion C2. The first overlap portion C1 is the portion of the first main swing arm 2428 used to overlap with the base, and there is a certain first overlap amount L2 between the first overlap portion C1 and the base. The second overlap portion C2 is the portion of the second main swing arm 2429 used to overlap with the base, and there is a certain second overlap amount L3 between the second overlap portion C2 and the base. When the folding screen device 100 moves from the folded state to the unfolded state, the first overlap amount L2 and the second overlap amount L3 gradually increase; when the folding screen device 100 moves from the unfolded state to the folded state, the first overlap amount L2 and the second overlap amount L3 gradually decrease. During the movement of the folding screen device 100 between the unfolded state and the folded state, the minimum overlap amount is the overlap amount when the folding screen device 100 is in the folded state. The first overlap portion C1 and the second overlap portion C2 need to meet the minimum overlap amount, otherwise the first main swing arm 2428 and the second main swing arm 2429 are likely to fall off the base.

[0182] If the folding screen device 100 is further thinned, the arc strokes of the first main swing arm 2428 and the second main swing arm 2429 will be shortened accordingly. The rotation angle of the first door panel 2422 relative to the base determines the design size of the center angle corresponding to the first main swing arm 2428. The larger the rotation angle of the first door panel 2422 relative to the base, the larger the center angle of the first main swing arm 2428 is designed to be. Under the premise of a certain radius, the longer the length of the first main swing arm 2428, the greater the thickness occupied by the first main swing arm 2428 in the thickness direction. After the arc stroke of the first main swing arm 2428 is shortened, in the thickness direction, the occupied thickness of the first main swing arm 2428 in the thickness direction is reduced. In this way, the further thinning of the folding screen device 100 can be achieved after the arc stroke of the first main swing arm 2428 is shortened. However, after the arc stroke of the first main swing arm 2428 is reduced, the first overlap amount L2 is also reduced, and the folding screen device 100 is very easy to fall out of the base when in the unfolded state, thereby causing the failure of the second rotating shaft mechanism 242. The above explains in detail the main reasons why the folding screen device 100 cannot be further thinned. The thickness of the first rotating shaft mechanism 241 and the thickness of the second rotating shaft mechanism 242 have been reduced to the limit. If they are further thinned, the first rotating shaft mechanism 241 and the second rotating shaft mechanism 242 will fail.

[0183] In order to solve the above problems, the present application also provides a support device 20, please refer to Fig.16 and Fig.17 , Fig.16 A schematic diagram of the structure of the support device 20 provided in some embodiments of the present application in a folded state; Fig.17 The support device 20 provided in some embodiments of the present application is a schematic diagram of a structure in an unfolded state. The support device 20 includes a first rotating shaft mechanism 241, a first shell 21, a second shell 22, a second rotating shaft mechanism 242 and a third shell 23.

[0184] The first housing 21 and the second housing 22 are rotatably connected via a first rotating shaft mechanism 241, and the first housing 21 and the second housing 22 rotate between an unfolded state and a folded state relative to the first rotating shaft mechanism 241. The second housing 22 and the third housing 23 are rotatably connected via a second rotating shaft mechanism 242, and the second housing 22 and the third housing 23 rotate between an unfolded state and a folded state relative to the second rotating shaft mechanism 242.

[0185] The first housing 21 includes a first support surface 213, the second housing 22 includes a second support surface 224, and the third housing 23 includes a third support surface 231a. In the unfolded state, the first support surface 213, the second support surface 224, and the third support surface 231a are oriented in the same direction. When the support device 20 is applied to the folding screen device 100, the first support plane 213, the second support surface 224, and the third support surface 231a are used to support the folding screen 10.

[0186] The first housing 21 includes a first portion 211 and a second portion 212 connected to each other. The first portion 211 is rotatably connected to the first rotating shaft mechanism 241, and the second portion 212 is connected to a side of the first portion 211 away from the first rotating shaft mechanism 241. The first portion 211 and the second portion 212 may be an integral structural member, or may be two structural members connected by gluing, riveting, or screws. This embodiment and the following embodiments are described by taking the first portion 211 and the second portion 212 as an integral structural member as an example.

[0187] According to the above description of the rotating shaft structure, the first rotating shaft mechanism 241 includes symmetrically arranged door panels, swing arms and transmission mechanisms, and the door panels, swing arms and transmission mechanisms are symmetrically arranged in the first housing 21 and the second housing 22. For the convenience of subsequent description, the part of the first rotating shaft mechanism 241 located in the first housing 21 is defined as the first rotating shaft portion, and the part of the first rotating shaft mechanism 241 located in the second housing 22 is defined as the second rotating shaft portion.

[0188] The first portion 211 has a first surface 211a opposite to the first supporting plane 213, and the second portion 212 has a second surface 212a opposite to the first supporting plane 213. The vertical distance L5 from the first surface 211a to the first supporting plane 213 is greater than the vertical distance L6 from the second surface to the first supporting plane, so as to form a first avoidance space K1 on the side facing the second surface 212a, and the orthographic projection of the first rotating shaft portion in the plane where the first supporting plane 213 is located is located within the orthographic projection of the first portion 211 in the plane where the first supporting plane 213 is located.

[0189] The second housing 22 includes a third portion 222 and a fourth portion 223 connected to each other. The third portion 222 is rotatably connected to the first rotating shaft mechanism 241. The fourth portion 223 is connected to a side of the third portion 222 away from the first rotating shaft mechanism 241, and the fourth portion 223 is also rotatably connected to the second rotating shaft mechanism 242. The third portion 222 and the fourth portion 223 may be an integral structural member, or may be two structural members connected by gluing, riveting, or screws. This embodiment and the following embodiments are described by taking the third portion 222 and the fourth portion 223 as an integral structural member as an example.

[0190] The second rotating shaft mechanism 242 has a third rotating shaft portion for cooperating with the fourth part 222, and the orthographic projection of the third rotating shaft portion in the plane where the first supporting plane 213 is located is located in the orthographic projection of the fourth part 222 in the plane where the first supporting plane 243 is located, and at least one end of the fourth part 222 adjacent to the second part 211 is located in the first avoidance space K1.

[0191] In the unfolded state, the first shell 21, the second shell 22 and the third shell 23 are arranged along the first direction F1. The folding direction of the first shell 21 and the second shell 22 relative to the first rotating shaft mechanism 241 is the second direction F2, and the folding direction of the second shell 22 and the third shell 23 is the third direction F3, and the third direction F3 is the opposite direction of the second direction F2. In other words, when the second direction F2 is clockwise, the third direction F3 is counterclockwise; or, when the second direction F2 is counterclockwise, the third direction F3 is clockwise. In other words, one of the first rotating shaft mechanism 241 and the second rotating shaft mechanism 242 is an outer folding shaft, and the other of the first rotating shaft mechanism 241 and the second rotating shaft mechanism 242 is an inner rotating shaft. This embodiment and the following embodiments are described by taking the first rotating shaft mechanism 241 as an outer folding shaft and the second rotating shaft mechanism 242 as an inner folding shaft as an example. However, this does not mean a special limitation of the present application. In some other embodiments, the first rotating shaft mechanism 241 may also be an inner folding rotating shaft, and the second rotating shaft mechanism 242 may also be an outer folding rotating shaft. In this way, in the folded state, the first shell 21, the second shell 22, and the third shell 23 are stacked in sequence, which is the Z-shaped folding method mentioned above.

[0192] In the folded state, the first shell 21, the second shell 22, and the third shell 23 are stacked in sequence. The first rotating shaft portion is completely accommodated in the first portion 211 of the first shell 21, that is, in the length direction of the supporting device 20, that is, Fig.17 In the X-axis direction, the length of the first portion 211 is greater than the length of the first rotating shaft portion.

[0193] For the convenience of subsequent description, the portion of the second rotating shaft mechanism 242 located in the third housing 23 is the fourth rotating shaft portion. In the folded state, the third rotating shaft portion is completely accommodated in the third portion 222 of the second housing 22, that is, in the length direction of the supporting device 20, that is, Fig.17 In the X-axis direction, the length of the fourth portion 223 is greater than the length of the second shaft portion. In addition, the length of the fourth portion 223 is less than or equal to the length of the second portion 212.

[0194] Further, in the folded state, the first surface 211a and the second surface 212a face the second housing 22. The distance L5 from the first surface 211a to the first support plane 213 is greater than the distance L6 from the second surface 212a to the first support plane 213. In other words, the thickness of the first portion 211 is greater than the thickness of the second portion 212. Fig.17The thickness of the first portion 211 in the Z-axis direction is greater than the thickness of the second portion 212. As a result, in the thickness direction of the support device 20, the second portion 212 is concave relative to the first portion 211, the second surface 212a forms a first avoidance space K1 on the side facing the second shell 22, the first portion 211 further includes a first side surface 211b facing the second portion 212, the first avoidance space K1 is surrounded by the second surface 212a and the first side surface 211b, the first avoidance space K1 has an opening facing the fourth portion 223, and at least a portion of the fourth portion 223 is accommodated in the first avoidance space K1.

[0195] Through the above content, we know that the bottleneck of the thinning of the folding screen device 100 is mainly restricted by the first hinge mechanism 241 and the second hinge mechanism 242. In this embodiment, the thickness of the first shell 21 at the first hinge mechanism 241 meets the design requirements of the first hinge mechanism 241, that is, the thickness of the first part 211 meets the design requirements of the first hinge mechanism 241. The thickness of the first shell 21 outside the first hinge mechanism 241 does not need to be restricted by the first hinge mechanism 241, and then the part of the first shell 21 outside the first hinge mechanism 241 can be thinned, that is, the second part 212 can be thinned.

[0196] Similarly, the thickness of the second shell 22 at the second rotating shaft mechanism 242 meets the design requirements of the second rotating shaft mechanism 242, that is, the thickness of the fourth portion 223 meets the design requirements of the second rotating shaft mechanism 242. The thickness of the second shell 22 outside the second rotating shaft mechanism 242 does not need to be restricted by the second rotating shaft mechanism 242, and thus the portion of the second shell 22 outside the second rotating shaft mechanism 242 can be thinned, that is, the third portion 222 can be thinned. In this way, the fourth portion 223 can be accommodated in the concave area of ​​the second portion 212 relative to the first portion 211, that is, the fourth portion 223 can be accommodated in the first avoidance space K1.

[0197] Therefore, when the total thickness of the support device 20 is constant, since the first shell 21 forms a first avoidance space K1 at the second portion 212, the thickness of the second shell 22 at the second rotating shaft mechanism 242 can extend into the first avoidance space K1 to expand the space of the second shell 22 to accommodate the second rotating shaft mechanism 242. Since the components of the second rotating shaft mechanism 242 are relatively complex, the difficulty of installing the second rotating shaft mechanism 242 can be reduced by expanding the installation space of the second rotating shaft mechanism 242. Moreover, under the premise that the difficulty of installing the second rotating shaft mechanism 242 is constant, that is, under the premise that the installation space of the second rotating shaft mechanism 242 is constant, through the above-mentioned settings, the folding screen device 100 can be further thinned, which is conducive to the development of the folding screen device 100 to be thin and light.

[0198] Based on the above examples, please continue to refer to Fig.17 , the second shell 22 has a second support plane 224. The third part 222 includes a third surface 222a opposite to the second support plane 224, and the fourth part 223 includes a fourth surface 223a opposite to the second support plane 224. The vertical distance from the third surface 222a to the second support plane 224 is smaller than the vertical distance from the fourth surface 223a to the second support plane 224, so as to form a second avoidance space K2 on the side facing the third surface 222a. In the unfolded state, the second support plane 224 is coplanar with the first support plane 213; in the folded state, the second support plane 224 is opposite to the first support plane 213, and an end of the first part 211 adjacent to the third part 222 is located in the second avoidance space K2.

[0199] That is, the thickness of the third portion 222 is less than the thickness of the fourth portion 223, that is, Fig.17 The thickness of the third portion 222 in the Z-axis direction is less than the thickness of the fourth portion 223. As a result, in the thickness direction of the support device 20, the third portion 222 is concave relative to the fourth portion 223, the third surface 222a forms a second avoidance space K2 on the side facing the first shell 21, the fourth portion 223 further includes a second side surface 222b facing the third portion 222, the second avoidance space K2 is surrounded by the third surface 222a and the second side surface 222b, the second avoidance space K2 has an opening facing the first portion 211, and at least a portion of the first portion 211 is accommodated in the second avoidance space K2.

[0200] In this embodiment, due to the setting of the first avoidance space K1, part of the second shell 22 is accommodated in the first avoidance space K1, and the thickness of part of the second shell 22 is increased, that is, the thickness of the fourth part 223. In this way, the thickness of the fourth part 223 is greater than the thickness of the third part 222, and there is a thickness difference between the fourth part 223 and the third part 222 to form the second avoidance space K2. In this way, the first part 211 can be accommodated in the second avoidance space K2, which is conducive to the thinness of the support device 20 and the folding screen device 100.

[0201] Furthermore, the third portion 222 is thinner than the fourth portion 223 to match the first portion 211, that is, the thickness of the third portion 222 is similar to that of the first portion 211. Specifically, the difference between the thickness of the third portion 222 and the thickness of the first portion 211 is less than or equal to 0.3 mm. In other words, the third portion 222 can be thicker than the first portion 211, and the first portion 211 can also be thicker than the third portion 222. The first rotating shaft portion is disposed in the first portion 211, and the second rotating shaft portion is disposed in the third portion 222. The thickness of the first portion 211 is similar to that of the third portion 222, which further reduces the design difficulty of the first rotating shaft mechanism 241.

[0202] The specific forms of the first avoidance space K1 and the second avoidance space K2 are introduced below.

[0203] Please continue reading Fig.17 In the first embodiment, the second surface 212a is recessed relative to the first surface 211a toward the first support plane 213 to form a first avoidance space K1, and the first avoidance space K1 is surrounded by the second surface 212a and the first side surface 211b. The thickness difference between the first surface 211a and the second surface 212a forms a first step. The third surface 222a and the fourth surface 223a are planes, and the second shell 22 also includes a second support plane 224 facing away from the first shell 21. The third surface 222a is recessed relative to the fourth surface 223a toward the second support plane 224 to form a second avoidance space K2, and the second avoidance space K2 is surrounded by the third surface 222a and the second side surface 222b. The thickness difference between the third surface 222a and the fourth surface 223a forms a second step. In the folded state, the first step is embedded with the second step. The first shell 21 forms the first avoidance space K1 through the above structure, and the second shell 22 forms the second avoidance space K2 through the above structure. The structures of the first shell 21 and the second shell 22 are simple and easy to process. Moreover, the first avoidance space K1 and the second avoidance space K2 further reduce the design difficulty of the first rotating shaft mechanism 241 and the second rotating shaft mechanism 242 , which is also conducive to the lightweight development of the supporting device 20 and the folding screen device 100 .

[0204] In the second embodiment, this embodiment is further improved on the basis of the first embodiment. Since the first surface 211a and the second surface 212a are planes, the junction of the first surface 211a and the second surface 212a forms a first step. And the third surface 222a and the fourth surface 223a are planes, and the junction of the third surface 222a and the fourth surface 223a forms a second step. The first step and the second step both form a sharp angle, that is, Fig.17A in the figure is at B. When a user uses the device, the sharp corner will greatly reduce the user's experience. Therefore, the sharp corner is eliminated by setting the first transition area 211c and the second transition area 222c.

[0205] For details, please refer to Fig.18 Fig.19 , Fig.18 A schematic diagram of the structure of the support device 20 in a folded state provided in some other embodiments of the present application; Fig.19 A schematic diagram of the structure of the support device 20 provided in some embodiments of the present application in an unfolded state. The second surface 212a also includes a first area and a first transition area 211c, and the first transition area 211c is connected between the first surface 211a and the first area. The third surface 222a also includes a second area and a second transition area 222c, and the second transition area 222c is connected between the second area and the fourth surface 223a, and the orthographic projection of the second transition area 222c on the first shell 21 overlaps with the first transition area 211c.

[0206] In some embodiments, the length of the first surface 211a is similar to the length of the third surface 222a, and the length of the second surface 212a is similar to the length of the fourth surface 223a, so as to improve the adaptability of the first shell 21 and the second shell 22 in the folded state. In addition, in order for the first part 211 to be accommodated in the second avoidance space K2 and the fourth part 223 to be accommodated in the first avoidance space K1, the length of the first surface 211a is slightly smaller than the length of the third surface 222a, and the length of the second surface 212a is slightly smaller than the length of the fourth surface 223a. In this way, the orthographic projection of the second transition area 222c on the first shell 21 overlaps with the first transition area 211c. The cross-sectional shapes of the first transition area 211c and the second transition area 222c can be arcs, oblique lines, wavy lines, curves, etc., which are not specifically limited here.

[0207] Therefore, the sharp corner formed by the first step is eliminated by setting the first transition area 211c, and the sharp corner formed by the second step is eliminated by setting the second transition area 222c. When using the folding screen device 100, the user will not feel the sharp corners on the first shell 21 and the second shell 22, thereby improving the user experience.

[0208] In the third embodiment, this embodiment makes further limitations on the basis of the second embodiment. Fig.18, the first transition area 211c is a slope, and the second transition area 222c is a slope. The first transition area 211c of the slope structure is connected between the first surface 211a and the second surface 212a, and the angle between the first surface 211a and the second surface 212a changes from the original right angle to an obtuse angle. In the unfolded state, the user uses the folding screen device 100 and directly contacts the back side of the first shell 21, that is, the surface of the first shell 21 facing away from the folding screen 10. The first surface 211a and the second surface 212a are connected through the first transition area 211c to form an obtuse angle. The user is not easily aware of the ridges between the first surface 211a and the second surface 212a, thereby improving the user experience.

[0209] Similarly, the second transition area 222c of the inclined surface structure is connected between the third surface 222a and the fourth surface 223a, and the angle between the third surface 222a and the fourth surface 223a is changed from the original right angle to an obtuse angle. In the unfolded state, the user uses the folding screen device 100 and directly contacts the back of the second shell 22, that is, the surface of the second shell 22 facing away from the folding screen 10. The third surface 222a and the fourth surface 223a are connected through the second transition area 222c to form an obtuse angle, and the user is not easy to perceive the convex edge between the third surface 222a and the fourth surface 223a, thereby improving the user experience.

[0210] In the fourth embodiment, this embodiment makes further limitations on the basis of the second embodiment. Fig. 20 , Fig. 20 A schematic diagram of the structure of the support device 20 in a folded state provided for some further embodiments of the present application. The first transition area 211c is a curved surface with a smooth transition, and the second transition area 222c is a curved surface with a smooth transition. The first surface 211a and the second surface 212a are connected by a curved surface with a smooth transition, eliminating the sharp corners or ridges formed at the junction of the first part 211 and the second part 212. The third surface 222a and the fourth surface 223a are connected by a curved surface with a smooth transition, eliminating the sharp corners or ridges formed at the junction of the third part 222 and the fourth part 223. In the unfolded state, the back of the folding screen device 100 has no sharp corners or ridges, thereby improving the user experience.

[0211] In the fifth embodiment, see Fig.21 , Fig.21 The structural schematic diagram of the support device 20 provided in some embodiments of the present application in a folded state. In the arrangement direction of the first part 211 and the second part 212, the second surface 212a extends obliquely toward the direction close to the first support plane 213. The fourth surface 223a is an inclined surface, and in the arrangement direction of the first part 211 and the second part 212, the fourth surface 223a extends obliquely toward the direction close to the first support plane 213.

[0212] The first avoidance space K1 is formed by the second surface 212a being tilted closer to the first support plane 213 than the first surface 211a, and at least part of the fourth part 223 is accommodated in the first avoidance space K1. The second avoidance space K2 is formed by the third surface 222a being tilted farther away from the first support plane 213 than the fourth surface 223a, and at least part of the first part 211 is accommodated in the second avoidance space K2. The first shell 21 forms the first avoidance space K1 through the above structure, and the second shell 22 forms the second avoidance space K2 through the above structure. The structures of the first shell 21 and the second shell 22 are simple and easy to process. Furthermore, the inclined surface eliminates the protrusions and depressions at the junction of the first part 211 and the second part 212, making the back of the first shell 21 smoother. In addition, the first avoidance space K1 and the second avoidance space K2 further reduce the design difficulty of the first rotating shaft mechanism 241 and the second rotating shaft mechanism 242, which is also conducive to the thin and light development of the support device 20 and the folding screen device 100.

[0213] In some embodiments, the first surface 211a is coplanar with the second surface 212a, the third surface 222a is coplanar with the fourth surface 223a, and in the folded state, the third surface 222a is parallel to the first surface 211a.

[0214] Please continue reading Fig.21 Furthermore, the second surface 212a is inclined at an angle less than or equal to 30 degrees relative to the first supporting plane 213, that is, Fig.21 The angle α1 in the figure. The angle of inclination of the fourth surface 223a relative to the first support plane 213 is less than or equal to 30 degrees. In this way, it is possible to avoid the thickness of one side of the second shell 22 being too thin due to the excessive inclination angle, which affects the structural strength of the shell. When the inclination angle is less than or equal to 30 degrees, it can meet the requirements of thinning the support device 20, or reduce the design difficulty of the second rotating shaft mechanism 242, and meet the structural strength of the shell when it is used.

[0215] Please continue reading Fig.21 Furthermore, the inclination angle of the first surface 211a is consistent with the inclination angle of the second surface 212a. The inclination angle of the fourth surface 223a is consistent with the inclination angle of the third surface 222a. In this way, the first surface 211a and the second surface 212a are surfaces with the same inclination angle, and the third surface 222a and the fourth surface 223a are surfaces with the same inclination angle. This makes the back of the first shell 21 and the second shell 22 smoother, eliminating the unevenness at the junction of the first part 211 and the second part 212, and the unevenness at the junction of the third part 222 and the fourth part 223. This improves the user experience.

[0216] The above content is a detailed introduction to the specific forms of the first avoidance space K1 and the second avoidance space K2. The third shell 23 will be further improved below. It should be noted that the improvement to the third shell 23 below may be based on the above-mentioned embodiments, or may not be based on the above-mentioned embodiments. That is to say, the improvement to the third shell 23 below may be used alone and not combined with other embodiments, as follows.

[0217] In some embodiments, see Fig. 22 , Fig. 22 The structural schematic diagram of the support device 20 in the folded state provided in some other embodiments of the present application. The third shell 23 has a third support plane 231a and a fifth surface 231b arranged opposite to each other. In the direction from the end close to the second rotating shaft mechanism 242 to the end away from the second rotating shaft mechanism 242, the third support plane 231a extends obliquely toward the direction close to the third surface 231b. In the unfolded state, the third support plane 231a is coplanar with the first support plane 213; in the folded state, the third support plane 231a is in the same direction as the first support plane 213.

[0218] Through the above content, we know that the bottleneck of the folding screen device 100 is mainly restricted by the first rotating shaft mechanism 241 and the second rotating shaft mechanism 242. In this embodiment, the thickness of the third shell 23 located at the second rotating shaft mechanism 242 meets the design requirements of the second rotating shaft mechanism 242. The thickness of the third shell 23 outside the second rotating shaft mechanism 242 does not need to be restricted by the second rotating shaft mechanism 242, and thus the part of the third shell 23 outside the second rotating shaft mechanism 242 can be thinned.

[0219] Therefore, when the total thickness of the support device 20 is constant, the thickness of the second shell 22 at the first rotating shaft mechanism 241 can extend toward the third shell 23 to expand the space of the second shell 22 to accommodate the first rotating shaft mechanism 241. Since the components of the first rotating shaft mechanism 241 are relatively complex, the difficulty of installing the first rotating shaft mechanism 241 can be reduced by expanding the installation space of the first rotating shaft mechanism 241. Moreover, under the premise that the difficulty of installing the first rotating shaft mechanism 241 is constant, that is, the installation space of the first rotating shaft mechanism 241 is constant, through the above-mentioned settings, the folding screen device 100 can be further thinned, which is conducive to the development of the folding screen device 100 to be thin and light.

[0220] In some embodiments, in the folded state, the first shell 21 fits with the second shell 22, and the second shell 22 fits with the third shell 23. Specifically, the first surface 211a fits with the third surface 222a, and the second surface 212a fits with the fourth surface 223a. Furthermore, the second shell 22 and the third shell 23 also fit together, specifically, the second support plane fits with the fifth surface 231a and the sixth surface 232a. In this way, it is conducive to the thinness of the support device 20 and the folding screen device 100, and can also enhance the user experience.

[0221] The second housing 22 has a second support plane 224. In the unfolded state, the third support plane 231a, the second support plane 224 and the first support plane 213 are coplanar; in the folded state, the second support plane 224 is opposite to the first support plane 213, and the second support plane 224 is parallel to and faces the third support plane 231a. The angle between the third support plane 231a and the fifth surface 231b is less than or equal to 30 degrees.

[0222] In some embodiments, the ratio of the thickness of the first part 211 to the thickness of the second part 212 is greater than or equal to 4 / 5, and less than or equal to 1 / 5. The "thickness of the first part 211" refers to the thickness of one end of the first part 211 close to the first hinge mechanism 241. The "thickness of the second part 212" refers to the thickness of one end of the second part 212 close to the second hinge mechanism 242. The thickness of the first part 211 can accommodate the first hinge portion of the first hinge mechanism 241, and the thickness of the second part 212 can be as thin as to accommodate only the thickness of the display module of the folding screen 10. When the ratio of the thickness of the first part 211 to the thickness of the second part 212 is within the above range, the thickness of the second part 212 can have the installation space of the folding screen 10 while ensuring that the first part 211 can have the installation space of the first hinge mechanism 241. It can not only meet the requirements of the lightness and thinness of the support device 20 and the folding screen device 100, but also meet the requirements of the installation space of the first hinge mechanism 241 and the folding screen 10.

[0223] In some embodiments, the distance from the first surface 211 a to the first supporting plane 213 , that is, the thickness of the first portion 211 , is greater than or equal to 3 mm and less than or equal to 6 mm.

[0224] In some embodiments, the distance from the second surface 212 a to the first supporting plane 213 , that is, the thickness of the second portion 212 , is greater than or equal to 1 mm and less than or equal to 4.5 mm.

[0225] In some embodiments, the thickness of the third portion 222 is greater than or equal to 1 mm and less than or equal to 4.5 mm.

[0226] In some embodiments, the thickness of the fourth portion 223 is greater than or equal to 5 mm and less than or equal to 10 mm.

[0227] In some embodiments, the thickness of the third shell 23 is greater than or equal to 3 mm and less than or equal to 10 mm.

[0228] The above content is described using the example of the folding screen device 100 being folded in a Z-shaped folding form, and the following content is described using the example of the folding screen device 100 being folded in a G-shaped folding form.

[0229] See also Fig.23 , Fig.23 The present application also provides a support device 20, which includes a first housing 21, a second housing 22, a third housing 23, a first rotating shaft mechanism 241, and a second rotating shaft mechanism 242. The second housing 22 and the first housing 21 are respectively located on both sides of the first rotating shaft mechanism 241, and are configured to rotate between an unfolded state and a folded state through the first rotating shaft mechanism 241.

[0230] The third housing 23 and the second housing 22 are respectively located on both sides of the second rotating shaft mechanism 242, and are configured to rotate between the unfolded state and the folded state through the second rotating shaft mechanism 242. The first housing 21 has a first supporting plane 211a and a first back surface 213 that are arranged opposite to each other. In the direction from one end close to the first rotating shaft mechanism 241 to one end away from the first rotating shaft mechanism 241, the first supporting plane 241 extends obliquely toward the direction close to the first back surface 213, the second housing 22 has a second supporting plane 224, and the third housing 23 has a third supporting plane 231a.

[0231] In the unfolded state, the third support plane 231a and the second support plane 224 are coplanar with the first support plane 213. In the folded state, the first shell 21, the third shell 23, and the second shell 22 are stacked in sequence, the first support plane 213 faces the third shell 23, and the second support plane 224 faces the third support plane 231a.

[0232] In the unfolded state, the first shell 21, the third shell 23 and the second shell 22 are arranged along the first direction F1. The folding direction of the first shell 21 and the second shell 22 relative to the first rotating shaft mechanism 241 is the second direction, and the folding direction of the second shell 22 and the third shell 23 is the third direction, which is the same direction as the second direction. In other words, the first rotating shaft mechanism 241 and the second rotating shaft mechanism 242 are both inner rotating shafts. In this way, in the folded state, the first shell 21, the third shell 23, and the second shell 22 are stacked in sequence, which is the G-shaped folding method mentioned above.

[0233] The first housing 21 also includes a first support plane 213. In the folded state, the first support plane 213 faces away from the second housing 22, and the first support plane 213 is a plane. When the support device 20 is applied to the folding screen device 100, the first support plane 213 can be used to support the flat folding screen 10, that is, on the basis of the original inward folding screen 10, an outer screen 17 is added to the first support plane 213. The first support plane 213 can also be used only as the outer surface of the housing.

[0234] For the convenience of subsequent description, the portion of the second shaft mechanism 242 located in the second housing 22 is defined as the third shaft portion, and the portion of the second shaft mechanism 242 located in the third housing 23 is defined as the fourth shaft portion. In the folded state, the projection of the third shaft portion on the first support plane 213 overlaps with the projection of the fourth shaft portion on the first support plane 213. In addition, the third shaft portion is completely accommodated in the third portion 222 of the third housing 23, that is, in the length direction of the support device 20, that is, Fig.17 In the X-axis direction, the length of the third portion 222 is greater than the length of the fourth rotation axis portion.

[0235] The first part 211 includes a first surface 211a, and the second part 212 includes a second surface 212a. In the folded state, the first surface 211a and the second surface 212a face the third housing 23. The distance from the first surface 211a to the first support plane 213 is greater than the distance from the second surface 212a to the first support plane 213. In other words, the thickness of the first part 211 is greater than the thickness of the second part 212, that is, Fig.17 The thickness of the first portion 211 in the Z-axis direction is greater than the thickness of the second portion 212. As a result, in the thickness direction of the support device 20, the second portion 212 is concave relative to the first portion 211, the second surface 212a forms a first avoidance space K1 on the side facing the third shell 23, the first portion 211 further includes a first side surface 211b facing the second portion 212, the first avoidance space K1 is surrounded by the second surface 212a and the first side surface 211b, the first avoidance space K1 has an opening facing the third portion 222, and at least a portion of the third portion 222 is accommodated in the first avoidance space K1.

[0236] Through the above content, we know that the bottleneck of the thinning of the folding screen device 100 is mainly restricted by the first hinge mechanism 241 and the second hinge mechanism 242. In this embodiment, the thickness of the first shell 21 at the first hinge mechanism 241 meets the design requirements of the first hinge mechanism 241, that is, the thickness of the first part 211 meets the design requirements of the first hinge mechanism 241. The thickness of the first shell 21 outside the first hinge mechanism 241 does not need to be restricted by the first hinge mechanism 241, and then the part of the first shell 21 outside the first hinge mechanism 241 can be thinned, that is, the second part 212 can be thinned.

[0237] Therefore, when the total thickness of the support device 20 is constant, since the first housing 21 forms the first avoidance space K1 at the second portion 212, the thickness of the third housing 23 at the second rotating shaft mechanism 242 can extend into the first avoidance space K1 to expand the space of the second housing 22 to accommodate the second rotating shaft mechanism 242. Since the components of the second rotating shaft mechanism 242 are relatively complex, the difficulty of installing the second rotating shaft mechanism 242 can be reduced by expanding the installation space of the second rotating shaft mechanism 242.

[0238] The above content is an improvement made to the support device 20 in terms of thinning or reducing the difficulty of installing the hinge mechanism. When the support device 20 is applied to the folding screen device 100, the folding screen device 100 also includes some electronic components. Based on the above-mentioned improvements to the support device 20, the installation positions of some electronic components in the folding screen device 100 are also improved to obtain further use effects, as follows.

[0239] The following introduces the connection relationship and positional relationship between the support device 20 and other electronic components in the folding screen device 100 when the support device 20 is applied to the folding screen device 100. The following explanation is given using the Z-shaped folding form of the support device 20 as an example.

[0240] See also Fig.24 , Fig.24 for Fig.18 The support device 20 in the figure is a schematic diagram of the structure in the unfolded state and the folded state. The above content has already expanded on the connection method of the folding screen 10 on the support device 20, which will not be repeated here. The folding screen device 100 also includes a folding screen 10 signal line 18, which is used to transmit a driving signal to the folding screen 10, and the folding screen 10 signal line 18 is arranged on a side edge of the third shell 23 away from the second hinge mechanism 242. In this way, the number of signal lines 18 transmitted between the second shell 22 and the third shell 23 is avoided and simplified, thereby reducing the design difficulty of the first hinge mechanism 241 to a certain extent. Furthermore, a larger and more complete space is reserved for the second shell 22, which is convenient for the installation and setting of other electronic components.

[0241] In some embodiments, the folding screen device 100 further includes a first group of electronic components, which are disposed in the second housing 22. The first group of electronic components includes but is not limited to batteries, speakers, motors, and the type-C interface can also be disposed on the side of the second housing 22. The second housing 22 has a certain thickness, and compared with the first housing 21, it has a larger space for installing the first group of electronic components, which is conducive to the arrangement and installation of the first group of electronic components.

[0242] In some embodiments, see Fig.25 , Fig.25 A schematic diagram of the structure of the support device 20 provided in some embodiments of the present application when it is in a folded state. The folding screen device 100 also includes a first camera module 31, which is arranged in the second shell 22, and the light incident surface of the first camera module 31 faces the second support plane of the second shell 22. The first camera module 31 is used by the folding screen device 100 when it is in the unfolded state. When the folding screen device 100 is in the unfolded state, the first camera module 31 faces the front camera of the folding screen device 100. The second shell 22 has a certain thickness, so the second shell 22 can provide more sufficient installation space for the installation of the first camera module 31. On this basis, the folding screen device 100 also includes a rear camera module, which can be arranged on the surface of the third shell 23 facing away from the folding screen 10, and the rear camera module can also be used directly when the folding screen 10 is in the folded state.

[0243] In some embodiments, please refer to Fig.26 and Fig. 27 , Fig.26 A schematic diagram of the structure of the support device 20 provided in some other embodiments of the present application when it is in a folded state; Fig. 27 for Fig.26Schematic diagram of the structure when the supporting device 20 in the expanded state. The folding screen device 100 also includes a second camera module 32, which is arranged in the second shell 22, and the light incident surface of the second camera module 32 faces the direction of the second supporting plane away from the second shell 22, and the second camera module 32 includes a lens, and at least part of the lens is located outside the second shell 22. The first shell 21 is provided with a first through hole, and the first display area is provided with a second through hole connected to the first through hole, and the second through hole passes through the cover plate of the first display area. In the folded state, at least part of the lens is accommodated in the first through hole and the second through hole. In this way, the second shell 22 has a certain thickness, and the second shell 22 can provide more sufficient installation space for the installation of the second camera module 32. In addition, the first shell 21 is provided with a through hole for the lens of the second camera module 32 to extend into, and the through hole passes through the first shell 21 and through to the cover plate of the folding screen 10. In this way, when in the folded state, the second camera module 32 can be used as a front camera without occupying the internal space of the first shell 21. As a result, the second part 212 of the first shell 21 can be as thin as the thickness of only installing the folding screen 10, which is conducive to the lightweight and thin folding screen device 100.

[0244] In some embodiments, see Fig.28 , Fig.28 A schematic diagram of the structure of the support device 20 provided in some embodiments of the present application when it is in a folded state. The folding screen device 100 also includes a third camera module 33, which is arranged in the first shell 21, and the light incident surface of the third camera module 33 faces the first supporting plane 213 of the first shell 21. The length of the first part 211 can be greater than the length of the first rotating shaft portion of the first rotating shaft mechanism 241, and the length of the first part 211 exceeding the first rotating shaft portion can accommodate the third camera module 33. In this way, the third camera module 33 can be used as a front camera of a folding device, and the third camera module 33 is directly installed in the first shell 21, with a simple structure and easy installation. In addition, the installation of the third camera module 33 does not affect the thickness of the second part 212, and the second part 212 can still be as thin as to accommodate only the thickness of the folding screen 10, which is conducive to the thinness of the folding screen device 100.

[0245] In some embodiments, please refer to Fig.28, the volume key and the switch key are arranged on the side of the third shell 23. Since only the first shell 21 and the third shell 23 are exposed in the folded state of the folding screen device 100, and the second shell 22 is wrapped by the first shell 21 and the third shell 23, the volume key and the switch key can only be arranged on one of the first shell 21 and the third shell 23. However, due to the thinning of the edge of the first shell 21, the thickness of the first shell 21 is not enough to provide space for installing the volume key and the switch key. Therefore, arranging the volume key and the switch key on the third shell 23 is not only conducive to the thinness of the folding screen device 100, but also the installation position of the volume key and the switch key is convenient for the user's usage habits. Of course, in some other embodiments, the volume key and the switch key can also be installed on the top or bottom surface of the first shell 21, the second shell 22 and the third shell 23.

[0246] 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.

[0247] 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 supporting device, characterized in that: include: A first housing, a second housing, a third housing, a first rotating shaft mechanism, and a second rotating shaft mechanism; The second shell and the first shell are respectively located on both sides of the first rotating shaft mechanism, and are configured to rotate between an unfolded state and a folded state through the first rotating shaft mechanism; The first housing comprises a first part and a second part, the first part is connected to the first rotating shaft mechanism, the second part is connected to a side of the first part away from the first rotating shaft mechanism, and the first rotating shaft mechanism has a first rotating shaft portion for cooperating with the first part; The first shell has a first supporting plane, the first part has a first surface opposite to the first supporting plane, the second part has a second surface opposite to the first supporting plane, the vertical distance from the first surface to the first supporting plane is greater than the vertical distance from the second surface to the first supporting plane, so as to form a first avoidance space on the side facing the second surface, and the orthographic projection of the first rotating shaft portion in the plane where the first supporting plane is located is located within the orthographic projection of the first part in the plane where the first supporting plane is located; The second housing includes a third part and a fourth part, the third part is connected to the first rotating shaft mechanism, and the fourth part is connected to a side of the third part away from the first rotating shaft mechanism; The third housing and the second housing are respectively located on both sides of the second rotating shaft mechanism and are configured to rotate between an unfolded state and a folded state through the second rotating shaft mechanism; the second rotating shaft mechanism has a third rotating shaft portion for cooperating with the fourth portion; Among them, in the folded state, the first shell, the second shell, and the third shell are stacked in sequence, and the orthographic projection of the third rotation axis portion in the plane where the first supporting plane is located is located in the orthographic projection of the fourth part in the plane where the first supporting plane is located, and at least one end of the fourth part adjacent to the second part is located in the first avoidance space.

2. The support device according to claim 1, characterized in that: The second shell has a second support plane; The third portion includes a third surface opposite to the second supporting plane, the fourth portion includes a fourth surface opposite to the second supporting plane, and a vertical distance from the third surface to the second supporting plane is smaller than a vertical distance from the fourth surface to the second supporting plane, so as to form a second avoidance space on the side facing the third surface; In the expanded state, the second support plane is coplanar with the first support plane; In the folded state, the second supporting plane is opposite to the first supporting plane, and an end of the first part adjacent to the third part is located in the second avoidance space.

3. The supporting device according to claim 2, characterized in that: The second surface is recessed relative to the first surface in a direction toward the first supporting plane to form the first avoidance space; The third surface is recessed relative to the fourth surface toward the second supporting plane to form the second avoidance space.

4. The supporting device according to claim 3, characterized in that: The second surface includes a first area and a first transition area, the first transition area is connected between the first area and the first surface, and in a direction from the first portion to the second portion, the first transition area extends obliquely toward the first area; The third surface includes a second area and a second transition area, the second transition area is connected between the second area and the fourth surface, in the direction from the fourth part to the third part, the second transition area extends obliquely toward the second area, the second transition area is adapted to the first transition area, and the second area is adapted to the first area.

5. The supporting device according to claim 4, characterized in that: The first transition region is a curved surface.

6. The supporting device according to claim 2, characterized in that: In a direction from the first portion to the second portion, the second surface extends obliquely toward a direction approaching the first supporting plane; In a direction from the third portion to the fourth portion, the fourth surface extends obliquely in a direction away from the second supporting plane.

7. The supporting device according to claim 6, characterized in that: The first surface is coplanar with the second surface, the third surface is coplanar with the fourth surface, and in the folded state, the third surface is parallel to the first surface.

8. The supporting device according to claim 6 or 7, characterized in that: The angle between the second surface and the first support plane is less than or equal to 30 degrees; An angle between the fourth surface and the second supporting plane is less than or equal to 30 degrees.

9. The supporting device according to any one of claims 1 to 8, characterized in that: The first rotating shaft mechanism has a second rotating shaft portion for cooperating with the third portion; The third housing has a third supporting plane and a fifth surface which are arranged opposite to each other, and in a direction from an end close to the second rotating shaft mechanism to an end away from the second rotating shaft mechanism, the third supporting plane extends obliquely toward a direction close to the third surface; In the unfolded state, the third support plane is coplanar with the first support plane; In the folded state, the third supporting plane is oriented in the same direction as the first supporting plane.

10. The supporting device according to claim 9, characterized in that: The second shell has a second support plane; In the unfolded state, the third support plane, the second support plane and the first support plane are coplanar; In the folded state, the second supporting plane is opposite to the first supporting plane, and the second supporting plane is parallel to and faces the third supporting plane.

11. The support device according to claim 9 or 10, characterized in that: An angle between the third supporting plane and the fifth surface is less than or equal to 30 degrees.

12. The supporting device according to any one of claims 1 to 11, characterized in that: A difference between a thickness of the first portion and a thickness of the third portion is less than or equal to 0.3 mm.

13. A supporting device, characterized in that: include: A first housing, a second housing, a third housing, a first rotating shaft mechanism, and a second rotating shaft mechanism; The first shell has a first supporting plane, and the second shell has a second supporting plane; The second shell and the first shell are respectively located on both sides of the first rotating shaft mechanism, and are configured to rotate between an unfolded state and a folded state through the first rotating shaft mechanism; The third shell and the second shell are respectively located on both sides of the second rotating shaft mechanism, and are configured to rotate between an unfolded state and a folded state through the second rotating shaft mechanism; The third housing has a third supporting plane and a fifth surface which are arranged opposite to each other, and in a direction from an end close to the second rotating shaft mechanism to an end away from the second rotating shaft mechanism, the third supporting plane extends obliquely toward a direction close to the fifth surface; In the unfolded state, the third support plane, the second support plane and the first support plane are coplanar; In the folded state, the first shell, the second shell, and the third shell are stacked in sequence, the second supporting plane is opposite to the first supporting plane, and the second supporting plane is parallel to and faces the third supporting plane.

14. The supporting device according to claim 13, characterized in that: An included angle between the third supporting plane and the fifth surface is less than or equal to 30 degrees.

15. A supporting device, characterized in that: include: A first housing, a second housing, a third housing, a first rotating shaft mechanism, and a second rotating shaft mechanism; The second shell and the first shell are respectively located on both sides of the first rotating shaft mechanism, and are configured to rotate between an unfolded state and a folded state through the first rotating shaft mechanism; The third shell and the second shell are respectively located on both sides of the second rotating shaft mechanism, and are configured to rotate between an unfolded state and a folded state through the second rotating shaft mechanism; The first shell has a first supporting plane and a first back surface which are arranged opposite to each other, and in a direction from an end close to the first rotating shaft mechanism to an end away from the first rotating shaft mechanism, the first supporting plane extends obliquely toward the direction close to the first back surface, the second shell has a second supporting plane, and the third shell has a third supporting plane; In the unfolded state, the third support plane, the second support plane and the first support plane are coplanar; In the folded state, the first shell, the third shell, and the second shell are stacked in sequence, the first supporting plane faces the third shell, and the second supporting plane faces the third supporting plane.

16. The support device according to claim 15, characterized in that An included angle between the first supporting plane and the first back surface is less than or equal to 30 degrees.

17. A folding screen device, characterized in that: include: The support device according to any one of claims 1 to 16; A folding screen, the folding screen comprising a first display area, a second display area, a third display area, a fourth display area and a fifth display area, the fourth display area is connected between the first display area and the second display area, and the fifth display area is connected between the second display area and the third display area; The first display area is supported and fixed on a first supporting plane arranged on the first shell, the second display area is supported and fixed on a second supporting plane of the second shell, the third display area is supported and fixed on a third supporting plane of the third shell, the fourth display area is supported on the first rotating shaft mechanism, and the fifth display area is supported on the second rotating shaft mechanism.

18. The folding screen device according to claim 17, characterized in that: The folding screen device also includes a folding screen signal line and a circuit board. The circuit board is arranged in the third shell, one end of the folding screen signal line is fixed to and electrically connected to the circuit board, and the other end of the folding screen signal line is fixed to an edge of the third display area away from the second hinge mechanism and is electrically connected to the folding screen.

19. The folding screen device according to claim 17 or 18, characterized in that: The folding screen device also includes a first group of electronic components, which are arranged in the second shell, and the first group of electronic components includes batteries, and / or speakers, and / or motors.

20. The folding screen device according to any one of claims 17 to 19, characterized in that: The folding screen device also includes a first camera module, which is arranged in the second shell, and the light incident surface of the first camera module faces the second supporting plane of the second shell.

21. The folding screen device according to any one of claims 17 to 20, characterized in that: The folding screen device further includes a second camera module, which is disposed in the second housing, and a light incident surface of the second camera module faces a direction away from a second supporting plane of the second housing; The first housing has a first light-transmitting portion, the first display area has a second light-transmitting portion, and the second light-transmitting portion is directly opposite to the first light-transmitting portion in the thickness direction of the first housing; In the folded state, in the thickness direction of the first shell, the light incident surface of the camera module corresponds to the first light transmitting portion.

22. The folding screen device according to any one of claims 17 to 21, characterized in that: The folding screen device also includes a third camera module, which is arranged in the first part of the first shell, and the light incident surface of the third camera module faces the first supporting plane of the first shell.

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