Hinge mechanism and folding screen device

Abstract

The application provides a hinge mechanism and a folding screen device. The hinge mechanism comprises a main shaft assembly, two sliding cover plates and at least two main swing rods. The at least two main swing rods are respectively rotationally connected on both sides of the axis of the main shaft assembly. The two sliding cover plates are respectively located on one side of the corresponding main swing rod. Each main swing rod is respectively slidably arranged on the inner side of the sliding cover plate. The two main swing rods can drive the two sliding cover plates to fold towards the inner side of each other or to expand to the same horizontal plane. The outer side of the sliding cover plate is used for arranging the flexible screen body of the folding screen device. The hinge mechanism further comprises at least two pushing assemblies. One end of each pushing assembly is connected with one of the main swing rods. The other end of each pushing assembly penetrates through the main shaft assembly and is connected with the sliding cover plate on the other side of the main shaft assembly. The arc length formed by the outer side surface of the hinge mechanism and the length of the flexible screen body are always in a matching state, so that the hinge mechanism will not interfere with the external force of the flexible screen body.

Description

Technical Field

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

[0002] As people's living standards continue to improve, the screen display effects of mobile terminals such as mobile phones are increasingly valued. However, the size of mobile phones restricts the expansion of screen size.

[0003] Currently, in order to achieve a larger screen area on a smaller mobile phone, a foldable structure can be used. Specifically, a mobile phone generally includes a hinge assembly and two frames that rotate and fold relative to each other, wherein the hinge assembly includes a hinge and two connectors hinged on the hinge, and the two frames are respectively connected to the ends of the corresponding connectors away from the hinge. The flexible screen of the screen covers both frames and the hinge assembly, and the flexible screen is arranged on the side of the two connectors and the frames that are away from the folding direction. When the two connectors drive the two frames to rotate around the middle hinge until they are in the same plane, the screen is in an unfolded state; when the two connectors drive the two frames to rotate around the hinge until they are folded relative to each other, the screen is in a folded state.

[0004] However, when the two connecting members in the traditional hinge assembly drive the two frames to unfold, the flexible screen body located on the hinge assembly will bend due to the external force, thereby causing damage to the flexible screen body. Summary of the Invention

[0005] The embodiments of the present application provide a hinge mechanism and a folding screen device, which solve the problem that when a traditional hinge assembly is unfolded, the flexible screen body located on the hinge assembly will bend due to external force, thereby causing damage to the flexible screen body.

[0006] The embodiment of the present application provides a hinge mechanism for folding or unfolding a flexible screen body of a folding screen device, the hinge mechanism comprising a main shaft assembly, two sliding cover plates, and at least two main swing arms;

[0007] At least two main rocker arms are rotatably connected to both sides of the axis of the main shaft assembly, and the two sliding cover plates are respectively located on one side of the corresponding main rocker arm. Each main rocker arm is slidably arranged on the inner side of the sliding cover plate. The two main rocker arms can drive the two sliding cover plates to fold toward the inner side of each other or unfold to the same horizontal plane. The outer side of the sliding cover plate is used to set the flexible screen body of the folding screen device; the hinge mechanism also includes at least two pushing components, one end of each pushing component is connected to one of the main rocker arms, and the other end of each pushing component passes through the main shaft assembly and is connected to the sliding cover plate on the other side of the main shaft assembly.

[0008] The embodiment of the present application arranges the hinge mechanism to include two main rocker arms that can rotate around the main axis assembly and a sliding cover plate arranged on each main rocker arm. In this way, when the two main rocker arms drive the two sliding cover plates to fold toward the inner side of each other or unfold toward the horizontal direction, the flexible screen body located on the outer side of the sliding cover plate can be folded or unfolded. At the same time, the embodiment of the present application slides the main rocker arm on the inner side of the sliding cover plate, and sets a pushing assembly between one of the main rocker arms and the sliding cover plate on the other side of the main shaft assembly. In this way, when the two main rocker arms are unfolded in the horizontal direction, each main rocker arm will push the corresponding pushing assembly to the other side of the main shaft assembly, thereby pushing the sliding cover plate on the other side of the main shaft assembly to slide outward relative to the main rocker arm, so that the overall width of the hinge mechanism can be extended as the flexible screen body is unfolded, so that the length of the arc formed on the outside of the hinge mechanism (the length of the arc formed by fitting the line connecting the two sliding cover plates away from the main shaft assembly and the main shaft assembly) can be extended as the flexible screen body is unfolded, ensuring that the arc length of the outer surface of the hinge mechanism is always consistent with the length of the flexible screen body during the unfolding process, thereby ensuring that the hinge mechanism will not generate external force interference on the flexible screen body, ensuring that the flexible screen body can stably fit on the hinge mechanism without bending due to external force, thereby avoiding damage to the flexible screen body during the unfolding process and extending the service life of the flexible screen body.

[0009] In one optional implementation, at least two main rocker arms are staggered along the extension direction of the main shaft assembly, ensuring that each main rocker arm can push its connected push assembly outward during rotation without interfering with the two push assemblies during movement, thereby ensuring that the two push assemblies can stably push the corresponding sliding cover plate to slide away from the main shaft assembly. Furthermore, by staggering the main rocker arms along the extension direction of the main shaft assembly, the push assemblies connected to each main rocker arm can also be staggered along the extension direction of the main shaft assembly. This not only facilitates the connection between the push assemblies and the sliding cover plate, but also reduces the thickness of the hinge mechanism.

[0010] In an optional implementation, the pushing assembly includes a first connecting rod and a second connecting rod;

[0011] One end of the first connecting rod is rotatably connected to the main rocker arm, the other end of the first connecting rod is rotatably connected to the second connecting rod, and the other end of the second connecting rod is rotatably connected to the sliding cover plate on the other side of the main shaft assembly.

[0012] The embodiment of the present application is to configure the pushing assembly to be a first link and a second link that are rotatably connected, and to rotatably connect one end of the first link to the main rocker arm, and to rotatably connect the end of the second link away from the first link to the sliding cover plate on the other side. In this way, when the main rocker arm is unfolded around the main axis assembly, it will push the sliding cover plate to slide outward through the first link and the second link rod in turn, thereby not only achieving width adjustment of the hinge mechanism, but also enabling the pushing assembly to rotate with the rotation of the main rocker arm and the sliding cover plate, ensuring that the flexible screen body is stably attached to the outside of the hinge mechanism without causing damage to the flexible screen body during the unfolding process of the hinge mechanism.

[0013] In an optional implementation, the pushing assembly further includes a first rotating shaft, a second rotating shaft, and a third rotating shaft;

[0014] A first mounting portion extends from one end of the main rocker arm close to the main shaft assembly, and a second mounting portion extends from the first connecting rod to both ends of the first mounting portion. The first rotating shaft is disposed between the first mounting portion and the second mounting portion.

[0015] The first connecting rod further comprises a third mounting portion extending toward the second connecting rod, the second connecting rod comprises a fourth mounting portion extending to both ends of the third mounting portion, and the second rotating shaft is disposed between the third mounting portion and the fourth mounting portion;

[0016] The second connecting rod further comprises a fifth mounting portion extending toward the sliding cover plate. The sliding cover plate comprises sixth mounting portions located at both ends of the fifth mounting portion. The third rotating shaft passes through the fifth mounting portion and the sixth mounting portion.

[0017] The embodiment of the present application connects the main rocker arm of the pushing assembly and the first connecting rod through a first rotating shaft, connects the first connecting rod and the second connecting rod through a second rotating shaft, and connects the second connecting rod and the sliding cover plate on the other side of the main shaft assembly through a third rotating shaft. This not only ensures the transmission of force between the main rocker arm, the first connecting rod, the second connecting rod and the sliding cover plate, but also simplifies the connection structure between the main rocker arm, the first connecting rod, the second connecting rod and the sliding cover plate, thereby improving the manufacturing efficiency of the hinge mechanism.

[0018] In an optional implementation, a sliding groove is formed on the sliding cover plate, which extends along the movable direction of the main rocker arm. The sliding groove has a first limiting groove on two groove walls arranged perpendicular to the extension direction. A clamping portion extends on two opposite side walls of the main rocker arm. The main rocker arm is slid in the sliding groove, and at least part of the clamping portion extends into the first limiting groove.

[0019] The embodiment of the present application sets the clamping part on both sides of the main swing lever, sets the first limiting groove on the groove wall of the sliding groove of the sliding cover plate, and extends the clamping part into the first limiting groove, so that when the main swing lever slides along the sliding groove, the clamping part can limit the movement of the main swing lever in the direction perpendicular to the sliding cover plate, thereby avoiding the main swing lever from being pulled out of the sliding groove, and also ensuring that the main swing lever drives the sliding cover plate to fold or unfold through the clamping part.

[0020] In an optional implementation, the sliding cover plate comprises two side walls arranged along the width direction, and the sliding groove is arranged at both ends of the extension direction and penetrates through the two side walls of the sliding cover plate, so as to facilitate the manufacturing of the sliding cover plate. The width direction of the sliding cover plate is consistent with the extension direction of the sliding groove.

[0021] In an optional implementation, the main shaft assembly comprises a fixed seat and at least two main rotating shafts;

[0022] The two main rotating shafts are arranged on both sides of the axis of the fixed seat, and the extension direction of the main rotating shaft is consistent with the extension direction of the fixed seat. An installation channel is formed at one end of the main swing lever close to the fixed seat, and the main rotating shaft is arranged in the installation channel, and the main swing lever can rotate around the main rotating shaft, thereby improving the rotation reliability of the two main swing levers and avoiding the situation that the main swing lever drives the sliding cover plate to jam or loosen during opening and closing.

[0023] In an optional implementation, the main shaft assembly further comprises a stopper arranged at both ends of the fixed seat, and the flexible screen body is limited between the two stoppers, so as to improve the stability of the flexible screen body on the hinge mechanism.

[0024] In an optional implementation, the hinge mechanism further comprises two connecting support plates and two side support plates;

[0025] The two connecting support plates are rotationally connected at both ends of the fixed seat along the width direction, and the two side support plates are respectively rotationally connected at one end of the connecting support plate away from the fixed seat. The width direction of the fixed seat is perpendicular to the extension direction of the fixed seat.

[0026] The side of the sliding cover plate away from the main swing lever is fixed on the side support plate, and part of the flexible screen body is arranged on the side of the fixed seat, the connecting support plate and the side support plate away from the sliding cover plate, so that the flexible screen body is stably attached to the outer surface of the hinge mechanism.

[0027] In an optional implementation, an arc-shaped limiting structure is arranged between the fixed seat and the connecting support plate; the connecting support plate rotates along a predetermined path under the guidance of the arc-shaped limiting structure, and the predetermined path is parallel to the movement path of the flexible screen body on the connecting support plate.

[0028] The embodiment of the present application provides an arc-shaped limiting structure between the fixed seat and the connecting support plate, and allows the connecting support plate to rotate along a movable path parallel to the flexible screen body under the guidance of the arc-shaped limiting structure, thereby controlling the angle between the connecting support plate and the fixed seat during the expansion and folding process, ensuring that the connecting support plate always supports the back side of the flexible screen body during the expansion or folding process of the hinge mechanism, and ensuring that the flexible screen body will not bend.

[0029] In an optional implementation, the arc-shaped limiting structure includes an arc-shaped protrusion and an arc-shaped groove matching the arc-shaped protrusion; the arc-shaped protrusion is arranged on one of the fixed seat and the connecting support plate, and the arc-shaped groove is arranged on the other of the fixed seat and the connecting support plate. In this way, during the expansion of the two main rocker arms, the arc-shaped protrusion will move along the extension direction of the arc-shaped groove, so that the connecting support plate is expanded from one side of the fixed seat along a preset path, which not only realizes the support effect on the flexible screen, but also simplifies the structural setting of the arc-shaped limiting structure, thereby improving the manufacturing efficiency of the hinge mechanism.

[0030] In an optional implementation, the connecting support plate includes a main body and a connecting part; the main body is located on one side of the fixed seat, a mounting hole is provided on the main body, the connecting part is removably embedded in the mounting hole, and an arc-shaped limiting structure is arranged between the fixed seat and the connecting part to facilitate the setting of the arc-shaped limiting structure. For example, when the connecting part is not assembled to the main body, an arc-shaped limiting structure can be set between the connecting part and the fixed seat, and then the connecting part can be assembled on the main body, so that the setting of the arc-shaped limiting structure is more convenient.

[0031] In an optional implementation, a mounting groove is formed on one side of the side support plate close to the connecting support plate, and an extension portion extends from the connecting support plate, which matches the mounting groove; when the side support plate is unfolded with the sliding cover plate, the extension portion moves along the mounting groove, thereby not only ensuring that the side support plate can rotate to a flattened state as the sliding cover plate is unfolded, but also enabling the side support plate to cooperate with the sliding cover plate to move away from the fixed seat.

[0032] In an optional implementation, a second limiting groove is formed on two opposite side walls of the installation groove, and a connecting shaft extends from two opposite side walls of the extension part, and at least a portion of the connecting shaft extends into the second limiting groove, ensuring that the extension part rotates stably in the installation groove, while also improving the stability of the extension part in the installation groove.

[0033] In an optional implementation, the extension portion is provided on the connecting portion to facilitate the fabrication of the extension portion.

[0034] An embodiment of the present application also provides a folding screen device, including a flexible screen body and the hinge mechanism as described above; the flexible screen body is provided with a surface of the hinge mechanism, wherein the flexible screen body is located on the side of the sliding cover plate away from the main rocker arm.

[0035] The folding screen device provided in the embodiment of the present application, by setting the flexible screen body on the outer surface of the above-mentioned hinge mechanism, enables the hinge mechanism to drive the flexible screen body to unfold, and the width of the hinge mechanism can be extended as the flexible screen body unfolds, thereby ensuring that the hinge mechanism will not generate external force interference on the flexible screen body, ensuring that the flexible screen body can be stably attached to the hinge mechanism without bending due to external force, thereby avoiding damage to the flexible screen body during the unfolding process and extending the service life of the folding screen device. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 This is a schematic diagram of the structure of the folding screen device provided by an embodiment of the present application in a folded state;

[0037] Figure 2 is a schematic structural diagram of a folding screen device in an unfolded state provided by an embodiment of the present application;

[0038] Figure 3 This is an assembly diagram of the first hinge mechanism and frame provided in an embodiment of the present application;

[0039] Figure 4 yes Figure 3 Schematic diagram of the structure of the middle hinge mechanism;

[0040] Figure 5 yes Figure 4 Schematic diagram of part of the structure;

[0041] Figure 6 yes Figure 5 Exploded diagram;

[0042] Figure 7 yes Figure 3 Assembly diagram of the middle hinge mechanism and the flexible screen in the folded state;

[0043] Figure 8 yes Figure 3 A diagram of one of the states of the middle hinge mechanism and the flexible screen during the unfolding process;

[0044] Figure 9 yes Figure 3 Assembly diagram of the central hinge mechanism and the flexible screen in the unfolded state;

[0045] Figure 10 yes Figure 4 Schematic diagram of the structure of the main swing arm;

[0046] Figure 11 yes Figure 3A top view of

[0047] Figure 12 yes Figure 11 Sectional view along line AA;

[0048] Figure 13 yes Figure 4 Schematic diagram of the structure of the spindle assembly;

[0049] Figure 14 This is an assembly diagram of the second hinge mechanism and frame provided in an embodiment of the present application;

[0050] Figure 15 yes Figure 14 Schematic diagram of part of the structure of the middle hinge mechanism;

[0051] Figure 16 yes Figure 14 Assembly diagram of the middle hinge mechanism and the flexible screen in the folded state;

[0052] Figure 17 yes Figure 14 A diagram of one of the states of the middle hinge mechanism and the flexible screen during the unfolding process;

[0053] Figure 18 yes Figure 14 Assembly diagram of the central hinge mechanism and the flexible screen in the unfolded state;

[0054] Figure 19 yes Figure 18 A cross-sectional view in one direction;

[0055] Figure 20 yes Figure 18 A cross-sectional view from another direction.

[0056] Description of reference numerals:

[0057] 100-hinge mechanism; 200-frame; 300-flexible screen;

[0058] 110-main shaft assembly; 120-sliding cover; 130-main swing arm; 140-pushing assembly; 150-connecting support plate; 160-side support plate; 170-arc-shaped limit structure;

[0059] 111 - Fixed seat; 112 - Main rotating shaft; 113 - Stopper; 121 - Slide groove; 122 - First limiting groove; 131 - Mounting channel; 132 - Fixing portion; 133 - First mounting portion; 141 - First connecting rod; 142 - Second connecting rod; 143 - First rotating shaft; 144 - Second rotating shaft; 145 - Third rotating shaft; 151 - Main body; 152 - Connecting portion; 153 - Extension portion; 161 - Mounting groove; 171 - Arc-shaped protrusion; 172 - Arc-shaped groove;

[0060] 1111-fixing plate; 1112-supporting portion; 1113-through hole; 1131-fixing portion; 1132-stopping portion. DETAILED DESCRIPTION

[0061] The terms used in the implementation section of this application are only used to explain the specific embodiments of this application and are not intended to limit this application.

[0062] Figure 1 is a schematic structural diagram of the folding screen device provided in an embodiment of the present application in a folded state, Figure 2 Schematic diagram of the structure of the folding screen device in the unfolded state provided by the embodiment of the present application. Figure 1 and Figure 2 As shown, currently, foldable screen devices such as foldable mobile phones usually achieve the folding and unfolding of the flexible screen 300 by folding and unfolding the hinge assembly. The traditional hinge assembly includes a hinge and two connectors hinged on the hinge, and the two connectors are located on both sides of the axis of the hinge. The two frames 200 of the foldable screen device are respectively fixed to the side of the two connectors away from the hinge. The flexible screen 300 of the foldable mobile phone covers the outside of the two frames 200, the hinge and the two connectors. Among them, the flexible screen 300 located on the frame 200 is bonded to the surface of the frame 200.

[0063] When the two connecting parts rotate toward the inner side closer to each other, the two connecting parts will drive the corresponding frame 200 to fold inward until the two connecting parts and the inner sides of the two frames 200 are arranged relative to each other, and the screen of the folding mobile phone, such as the flexible screen 300, is in a folded state; when the two connecting parts rotate toward the inner side away from each other, the two connecting parts will drive the corresponding frame 200 to unfold outward until the two connecting parts and the two frames 200 are on the same horizontal plane, and the screen of the folding mobile phone, such as the flexible screen 300, is in an unfolded state.

[0064] It should be noted that the inner side and the outer side of the connecting member refer to two surfaces of the connecting member that are arranged opposite to each other along the thickness direction.

[0065] It should be understood that the length of the flexible screen 300 remains constant from the folded state to the unfolded state, while the width of the two connecting members of the hinge assembly remains constant when the two connecting members change from the folded state to the unfolded state. This causes the length of the arc formed by the line connecting the ends of the two connecting members away from the hinge and the hinge to gradually shorten. The width of the connecting member refers to the length between the end of the connecting member closest to the hinge and the end away from the hinge.

[0066] For example, when the two connecting parts are unfolded to the same horizontal plane, the total length between the ends of the two connecting parts away from the shaft (the total width of the shaft assembly when it is in the unfolded state) is less than the length of the flexible screen body 300 located on the outside of the shaft assembly when it is in the unfolded state. In this way, when the flexible screen body 300 located on the outside of the shaft assembly is unfolded with the two connecting parts of the shaft assembly, the length of the arc surface formed on the outer surface of the shaft assembly is less than the length of the flexible screen body 300, so that the distance between the frames 200 on both sides of the shaft assembly is smaller, so that the flexible screen body 300 is squeezed by the two frames 200 during the unfolding process and bends, which will cause damage to the flexible screen body 300 and shorten the service life of the foldable mobile phone.

[0067] In order to solve the above problems, the hinge mechanism provided in the embodiment of the present application replaces the traditional rotating shaft assembly, and the width of the hinge mechanism is set to be adjustable. For example, the hinge mechanism is set to include two main rocking arms that can rotate around the main shaft assembly and a sliding cover plate arranged on each main rocking arm, the main rocking arm is slidably arranged on the inner side of the sliding cover plate, and a pushing assembly is arranged between one of the main rocking arms and the sliding cover plate on the other side of the main shaft assembly. In this way, when the two main rocking arms are expanded in the horizontal direction, each main rocking arm will push the corresponding pushing assembly to move away from the main shaft assembly, thereby pushing the sliding cover plate on the other side of the main shaft assembly to slide outward relative to the main rocking arm, so that The overall width of the hinge mechanism can be extended as the flexible screen is unfolded, ensuring that the length of the arc formed by the outer surface of the hinge mechanism (the length of the arc formed by the end of the two sliding cover plates away from the main shaft assembly and the connecting line of the three main shaft assemblies) is always in a consistent state with the length of the flexible screen, thereby ensuring that the hinge mechanism will not generate external force interference on the flexible screen. For example, the flexible screen will not be squeezed by the two frames during the unfolding process, ensuring that the flexible screen can fit stably on the hinge mechanism without bending due to external force, thereby avoiding damage to the flexible screen during the unfolding process and extending the service life of the flexible screen.

[0068] The following is a detailed description of the hinge mechanism and the structure of the folding screen device in the embodiment of the present application in conjunction with the accompanying drawings.

[0069] Figure 3 This is an assembly diagram of the first hinge mechanism and frame provided in an embodiment of the present application. Figure 4 yes Figure 3 Schematic diagram of the structure of the middle hinge mechanism. Figure 5 yes Figure 4 A partial structural diagram of Figure 6 yes Figure 5 Exploded view of . Figures 1 to 6 As shown, the embodiment of the present application provides a hinge mechanism 100, which is used to fold or unfold the flexible screen body 300 of the folding screen device. Specifically, referring to Figure 4 and Figure 5 As shown, the hinge mechanism 100 includes a main shaft assembly 110, two sliding cover plates 120 and at least two main rocker arms 130, wherein at least two main rocker arms 130 are rotatably connected to both sides of the axis of the main shaft assembly 110, and the two sliding cover plates 120 are respectively located on one side of the corresponding main rocker arms 130, and each main rocker arm 130 is respectively arranged on the inner side of the sliding cover plate 120. The two main rocker arms 130 can drive the two sliding cover plates 120 to fold toward the inner side of each other or unfold to the same horizontal plane, and the outer side of the sliding cover plate 120 is used to set the flexible screen body 300 of the folding screen device.

[0070] Figure 7 yes Figure 3 Assembly diagram of the middle hinge mechanism and the flexible screen in the folded state. Figure 8 yes Figure 3 One of the states of the middle hinge mechanism and the flexible screen during the unfolding process. Figure 9 yes Figure 3 Assembly drawing of the middle hinge mechanism and the flexible screen in the unfolded state. Figures 5 to 9 As shown, taking two main rocker arms 130 as an example, the two main rocker arms 130 are respectively connected to the two sides of the axis of the main shaft assembly 110. For example, the main shaft assembly 110 can be a rotating shaft, and one end of the two main rocker arms 130 is hinged on both sides of the axis of the rotating shaft to ensure that the two main rocker arms 130 can move inwardly toward each other around the rotating shaft until the two main rocker arms 130 are arranged relative to each other and the hinge mechanism 100 is in a folded state (as shown in FIG. Figure 7 In addition, the two main swing arms 130 can also be unfolded around the rotation axis in a direction away from each other until the two main swing arms 130 are located on the same horizontal plane and the hinge mechanism 100 is in an unfolded state (as shown in FIG. Figure 9 shown).

[0071] Reference Figure 7 As shown, the two sliding cover plates 120 of the embodiment of the present application are respectively arranged on the outer sides of the two main rocker arms 130, that is, the two sliding cover plates 120 are respectively arranged on the side away from the folding direction of the two main rocker arms 130, that is, when the two main rocker arms 130 are arranged relative to each other, the sliding cover plate 120 is located on the outside of the space clamped by the two main rocker arms 130. To put it another way, each main rocker arm 130 is respectively arranged on the inner side of the sliding cover plate 120.

[0072] It should be noted that the inner side and the outer side of the main rocker 130 refer to two surfaces of the main rocker 130 that are arranged opposite to each other in the thickness direction. Figure 7 and Figure 8 As shown, the folding process of the hinge mechanism 100 is a process in which the two main rocker arms 130 move closer to each other. Figure 8 and Figure 9As shown, the process of the hinge mechanism 100 unfolding is a process in which the two main rocker arms 130 move away from each other's inner sides.

[0073] In addition, the inner side and the outer side of the sliding cover plate 120 specifically refer to two surfaces of the sliding cover plate 120 that are arranged opposite to each other in the thickness direction. Figure 7 and Figure 8 As shown, when the inner sides of the two main rocker arms 130 are folded toward each other, the inner sides of the two sliding cover plates 120 gradually approach each other until the inner sides of the two sliding cover plates 120 are arranged opposite to each other, and the hinge mechanism 100 is in a folded state; Figure 8 and Figure 9 As shown, when the inner sides of the two main rocker arms 130 are unfolded away from each other, the inner sides of the two sliding cover plates 120 gradually move away from each other until the inner sides of the two sliding cover plates 120 are on the same horizontal plane, and the hinge mechanism 100 is in an unfolded state.

[0074] Reference Figures 1 to 3 As shown, when the hinge mechanism 100 of the embodiment of the present application is specifically assembled on a folding screen device, the two sliding cover plates 120 of the hinge mechanism 100 are connected to the two frames 200 of the folding screen device at one end away from the main shaft assembly 110, and the flexible screen body 300 of the folding screen device is arranged on the outside of the sliding cover plate 120 and the outer surface of the two frames 200, that is, the hinge mechanism 100 of the embodiment of the present application is an external folding hinge mechanism 100. When the hinge mechanism 100 is applied to a folding screen device, the folding screen device is an external folding screen device.

[0075] It can be understood that the outer side of the sliding cover 120 and the outer surface of the frame 200 are located on the same side of the folding screen device. For example, when the two sliding cover plates 120 and the frame 200 are unfolded to the same horizontal plane, the outer surface of the frame 200 and the outer side of the sliding cover plate 120 are located on the same horizontal plane.

[0076] In actual application, the flexible screen body 300 located on the outer surface of the two frames 200 is bonded to the surface of the frame body 200 to ensure that part of the flexible screen body 300 is stably covered on the outside of the hinge mechanism 100, thereby improving the stability of the flexible screen body 300 in the folding screen device.

[0077] Reference Figures 7 to 9 As shown, in the embodiment of the present application, when the two main swing arms 130 drive the two sliding cover plates 120 to fold toward the inner side of each other or to unfold horizontally, the flexible screen 300 located outside the sliding cover plate 120 can be folded or unfolded. Figure 7 and Figure 8As shown, when the two main swing rods 130 are rotated towards the inner side of each other, the sliding cover plates 120 on the two main swing rods 130 will drive the frame bodies 200 on both sides to fold towards the inner side of each other, at the same time, the flexible screen body 300 on the outer side of the sliding cover plates 120 and the frame bodies 200 will also be bent, until the two main swing rods 130 are oppositely arranged, the two sliding cover plates 120 and the two frame bodies 200 are folded to be oppositely arranged, and the flexible screen body 300 is in a folded state (as shown in Figure 7 ).

[0078] In addition, as shown in Figure 8 and Figure 9 , when the two main swing rods 130 are rotated towards the inner side away from each other, the sliding cover plates 120 on the two main swing rods 130 will drive the frame bodies 200 on both sides to unfold towards the inner side away from each other, at the same time, the flexible screen body 300 on the outer side of the sliding cover plates 120 and the frame bodies 200 will also be unfolded, until the two main swing rods 130 are in the same horizontal plane, the two sliding cover plates 120 and the two frame bodies 200 are also unfolded to the same horizontal plane, and the flexible screen body 300 is in an unfolded state (as shown in Figure 9 ).

[0079] As shown in Figure 4 , in some examples, the number of main swing rods 130 on the same side of the axis of the main shaft assembly 110 can be 2 or more, for example, 3 main swing rods 130 can be arranged on the same side of the axis of the main shaft assembly 110, and the 3 main swing rods 130 are arranged in the extension direction of the main shaft assembly 110 (the direction indicated by arrow y in Figure 3 ). The 3 main swing rods 130 on the same side of the main shaft assembly 110 are arranged on the inner side of the sliding cover plate 120 on one side of the main shaft assembly 110, so that the three main swing rods 130 can simultaneously drive a sliding cover plate 120 to fold and unfold, thereby further improving the motion stability of the hinge mechanism 100.

[0080] The number of main swing rods 130 is not limited in the embodiments of the present application, and the number can be adjusted according to the extension direction of the hinge mechanism 100 when specifically arranged.

[0081] As shown in Figure 4 and Figure 5 , in order to realize the adjustable width of the hinge mechanism 100 during unfolding, the main swing rod 130 of the present application is arranged to slide on the corresponding sliding cover plate 120. The width direction of the hinge mechanism 100 can be directly referred to the direction indicated by arrow x in Figure 3 .

[0082] Figure 10 is a structural schematic view of the main swing rod in Figure 4 . Referring to Figure 4 and Figure 10 As shown, for example, a sliding groove 121 can be opened in the width direction of the sliding cover 120, and the sliding groove 121 extends along the movable direction of the main rocker arm 130. The sliding groove 121 has a first limiting groove 122 on two groove walls arranged perpendicular to the extension direction, and a clamping portion 132 extends on the two opposite side walls of the main rocker arm 130. The main rocker arm 130 is slidably arranged in the sliding groove 121, and at least part of the clamping portion 132 extends into the first limiting groove 122. In this way, when the main rocker arm 130 slides along the sliding groove 121, the clamping portion 132 can limit the main rocker arm 130 from moving in a direction perpendicular to the sliding cover 120, thereby preventing the main rocker arm 130 from escaping from the top notch of the sliding groove 121, and ensuring that the main rocker arm 130 drives the sliding cover 120 to fold or unfold through the clamping portion 132.

[0083] It should be noted that the top notch of the sliding groove 121 specifically refers to the opening of the sliding groove 121 parallel to the inner surface of the sliding cover 120 .

[0084] Of course, in some examples, a stopper (not shown) may be provided on two opposing groove walls extending into the interior of the chute 121. The distance between the two stoppers is less than the width of the main rocker 130. The main rocker 130 is accommodated in the space between the two stoppers and the inner bottom wall of the chute 121. This not only ensures that the main rocker 130 can slide on the sliding cover 120, but also ensures that the main rocker 130 can drive the sliding cover 120 to rotate during rotation. The inner bottom wall of the chute 121 is open toward the top of the chute 121.

[0085] In a specific configuration, when the hinge mechanism 100 rotates from the folded state to the unfolded state or from the unfolded state to the folded state, the distance that the main swing arm 130 slides on the sliding cover 120 is less than the width of the sliding cover 120, so as to ensure that the sliding cover 120 does not separate from the main swing arm 130. Figure 9 As shown, for example, when the hinge mechanism 100 rotates from the folded state to the unfolded state, the maximum distance L that the main swing arm 130 slides on the sliding cover 120 is less than the width of the sliding cover 120 .

[0086] Reference Figure 4 As shown, the sliding cover 120 includes two side walls arranged along the width direction, and the two ends of the sliding groove 121 along the extension direction can respectively penetrate the two side walls of the sliding cover 120 to facilitate the production of the sliding cover 120. The width direction of the sliding cover 120 is consistent with the extension direction of the sliding groove 121.

[0087] For ease of description, taking the example of two main rocker arms 130 provided on the main shaft assembly 110, the two sliding cover plates 120 on both sides of the main shaft assembly 110 can be used as the first sliding cover plate and the second sliding cover plate, the main rocker arm 130 on the first sliding cover plate can be used as the first main rocker arm, and the main rocker arm 130 on the second sliding cover plate 120 can be used as the second main rocker arm. The first main rocker arm is slidably mounted on the first sliding cover plate, and the second main rocker arm is slidably mounted on the second sliding cover plate.

[0088] Figure 11 yes Figure 3 A top view of Figure 12 yes Figure 11 Sectional view along line AA. Figure 6 、 Figure 11 and Figure 12 As shown, the hinge mechanism 100 of the embodiment of the present application also includes at least two pushing components 140, one end of each pushing component 140 is connected to one of the main rocker arms 130, and the other end of each pushing component 140 passes through the main shaft component 110 and is connected to the sliding cover plate 120 on the other side of the main shaft component 110.

[0089] For example, refer to Figure 7 and Figure 12 As shown, when the hinge mechanism 100 has two main swing rods 130, the two main swing rods 130 are respectively connected to the two sides of the axis of the main shaft assembly 110, and a pushing assembly 140 is connected between each main swing rod 130 and the sliding cover plate 120 on the other side of the main shaft assembly 110. Figures 7 to 9 As shown, when the two main swing arms 130 are unfolded in the horizontal direction, each main swing arm 130 pushes the corresponding pushing assembly 140 to move to the other side of the main shaft assembly 110, thereby pushing the sliding cover 120 on the other side of the main shaft assembly 110 to slide outward relative to the main swing arm 130, so as to extend the width of one side of the main shaft assembly 110 of the hinge mechanism 100, thereby extending the overall width of the hinge mechanism 100 in any unfolded state, so that the length of the arc formed on the outer side of the hinge mechanism 100 (the two sliding cover plates 120 away from one end of the main shaft assembly 110 and the The length of the arc formed by the fitting of the connecting line of the three main shaft components 110 can be extended as the flexible screen body 300 is unfolded, ensuring that the arc length of the outer surface of the hinge mechanism 100 and the length of the flexible screen body 300 always match during the unfolding process, thereby ensuring that the hinge mechanism 100 will not generate external force interference on the flexible screen body 300, and ensuring that the flexible screen body 300 can be stably attached to the hinge mechanism 100 without bending due to external force, thereby avoiding damage to the flexible screen body 300 during the unfolding process and extending the service life of the flexible screen body 300.

[0090] It should be understood that the two sliding cover plates 120 away from one end of the main shaft assembly 110 and the main shaft assembly 110 have multiple connecting lines in the extension direction of the main shaft assembly 110, and each connecting line is fitted to form an arc. Then, the multiple fitted arcs on the outer surface of the hinge mechanism 100 can form an arc surface, which extends as the flexible screen body 300 is unfolded, ensuring that the arc surface always matches the flexible screen body 300.

[0091] Among them, when the hinge mechanism 100 rotates from the folded state to the unfolded state, since the maximum sliding distance of the main rocker arm 130 on the sliding cover 120 is L, the total width of the main rocker arm 130 and the sliding cover 120 located on one side of the main shaft assembly 110 is extended by L from the folded state to the unfolded state.

[0092] It should be noted that the width of one side of the main shaft assembly 110 of the hinge mechanism 100 refers to the distance between the axis of the main shaft assembly 110 of the hinge mechanism 100 and the end of one of the sliding cover plates 120 away from the main shaft assembly 110. The overall width of the hinge mechanism 100 refers to the distance between the ends of the two sliding cover plates 120 away from the main shaft assembly 110. The curved surface formed on the outer surface of the hinge mechanism 100 refers to the curved surface outlined between the ends of the two sliding cover plates 120 away from the main shaft and the outer surface of the main shaft assembly 110, which coincides with the inner surface of the flexible screen 300 when in the unfolded state.

[0093] For example, when a main rocker arm 130 is provided on each side of the axis of the main shaft assembly 110, for example, a first main rocker arm and a second main rocker arm are provided on each side of the axis of the main shaft assembly 110, the first main rocker arm is slidably mounted on the first sliding cover plate, the second main rocker arm is slidably mounted on the second sliding cover plate, and a first pushing assembly is connected between the first main rocker arm and the second sliding cover plate. In other words, one end of the first pushing assembly is connected to the first main rocker arm, and the other end of the second pushing assembly passes through the main shaft assembly and is connected to the second sliding cover plate. A second pushing assembly is connected between the second main rocker arm and the first sliding cover plate. In other words, one end of the second pushing assembly is connected to the second main rocker arm, and the other end of the second pushing assembly passes through the main shaft assembly and is connected to the first sliding cover plate.

[0094] When the first main rocker arm drives the first sliding cover plate to expand outward (the inner side of the first main rocker arm rotates away from the inner side of the second main rocker arm), the first main rocker arm will simultaneously push the first pushing component toward the other side of the main shaft component 110 (in the direction close to the second sliding cover plate), and the first pushing component will then push the second sliding cover plate away from the main shaft component 110, thereby extending the total width of the first main rocker arm and the first sliding cover plate on one side of the main shaft component 110.

[0095] Similarly, when the second main rocker arm drives the second sliding cover plate to expand outward (the inner side of the second main rocker arm rotates in the direction away from the inner side of the first main rocker arm), the second main rocker arm will simultaneously push the second pushing component toward the other side of the main shaft component 110 (in the direction close to the first sliding cover plate), and the second pushing component will then push the first sliding cover plate in the direction away from the main shaft component 110, thereby extending the total width of the second main rocker arm and the second sliding cover plate on the other side of the main shaft component 110. In this way, the overall width of the hinge mechanism 100 can be extended as the flexible screen body 300 is expanded, so that the length of the arc formed on the outer side of the hinge mechanism 100 matches the length of the flexible screen body 300 during the expansion process, ensuring that the hinge mechanism 100 will not generate external force interference on the flexible screen body 300, and ensuring that the flexible screen body 300 can be stably attached to the hinge mechanism 100 without bending due to external force.

[0096] Reference Figure 4 As shown, when the hinge mechanism 100 of the embodiment of the present application is specifically set up, at least two main rocker arms 130 are staggered along the extension direction of the main shaft assembly 110. For example, when two main rocker arms 130 are provided on the main shaft assembly 110, the two main rocker arms 130 are located at different positions in the extension direction of the main shaft assembly 110, that is, the two main rocker arms 130 have no overlapping parts in the extension direction of the main shaft assembly 110, thereby ensuring that each main rocker arm 130 can push the respective connected pushing assembly 140 to move outward during the rotation process without causing interference between the two pushing assemblies 140 during the movement, thereby ensuring that the two pushing assemblies 140 stably push the corresponding sliding cover plate 120 to slide in the direction away from the main shaft assembly 110.

[0097] In addition, by staggering the main rocker arms 130 along the extension direction of the main shaft assembly 110, the pushing assembly 140 connected to each main rocker arm 130 can also be staggered along the extension direction of the main shaft assembly 110. This not only facilitates the connection between the pushing assembly 140 and the sliding cover 120, but also saves the size occupied by the hinge mechanism 100 in the thickness direction.

[0098] The thickness direction of the hinge mechanism 100 is consistent with the thickness direction of the flexible screen body 300 .

[0099] The pushing assembly 140 of the embodiment of the present application, when specifically configured, may be a push rod (not shown) rotatably connected between one of the main swing arms 130 and the sliding cover plate 120 on the other side of the main shaft assembly 110. For example, a push rod is rotatably connected between the first main swing arm 130 and the second sliding cover plate 120. When the first main swing arm 130 is deployed outward, the first main swing arm 130 pushes the second sliding cover plate 120 in a direction away from the main shaft assembly 110 by pushing the push rod, thereby extending the distance between the end of the second sliding cover plate 120 away from the main shaft assembly 110 and the end of the second main swing arm 130 closer to the main shaft assembly 110, that is, the width of the main shaft assembly 110 on the side where the second sliding cover plate 120 is provided.

[0100] Reference Figure 12 As shown, in some examples, the pushing assembly 140 may also include a first connecting rod 141 and a second connecting rod 142, one end of the first connecting rod 141 is rotatably connected to the main rocker arm 130, the other end of the first connecting rod 141 is rotatably connected to the second connecting rod 142, and the other end of the second connecting rod 142 is rotatably connected to the sliding cover plate 120 on the other side of the main shaft assembly 110.

[0101] For example, one end of the first main rocker arm is rotatably connected to the first link 141, the end of the first link 141 away from the first main rocker arm is rotatably connected to the second link 142, and the end of the second link 142 away from the first link 141 is rotatably connected to the second sliding cover plate. In this way, when the first main rocker arm is unfolded around the main shaft assembly 110, it will push the second sliding cover plate 120 to slide outward through the first link 141 and the second link 142 in sequence, thereby not only realizing the adjustment of the width of one side of the hinge mechanism 100 provided with the second sliding cover plate, but also the pushing assembly 140 can rotate with the rotation of the first main rocker arm and the first sliding cover plate, ensuring that the flexible screen body 300 is stably attached to the outside of the hinge mechanism 100 without causing damage to the flexible screen body 300 during the unfolding process of the hinge mechanism 100.

[0102] The connection mode and movement process between the second main rocker arm and the first sliding cover plate and the pushing component 140 are similar to the connection mode and movement process between the first main rocker arm and the second sliding cover plate and another pushing component 140, and will not be repeated here.

[0103] The first connecting rod 141 and the main rocker arm 130 , the first connecting rod 141 and the second connecting rod 142 , and the second connecting rod 142 and the sliding cover plate 120 can all be hinged via a hinge structure.

[0104] Of course, refer to Figure 7 As shown, the pushing assembly 140 may further include a first rotating shaft 143, a second rotating shaft 144 and a third rotating shaft 145. Figure 10As shown, a first mounting portion 133 extends from one end of the main rocker arm 130 close to the main shaft assembly 110, and a second mounting portion is provided on the first connecting rod 141 extending to both ends of the first mounting portion 133. The first rotating shaft 143 is passed through the first mounting portion 133 and the second mounting portion, so that both the first connecting rod 141 and the main rocker arm 130 can rotate around the first rotating shaft 143.

[0105] The first connecting rod 141 also has a third mounting portion extending toward the second connecting rod 142 , and the second connecting rod 142 has a fourth mounting portion extending to both ends of the third mounting portion. The second rotating shaft 144 is disposed between the third mounting portion and the fourth mounting portion, so that both the first connecting rod 141 and the second connecting rod 142 can rotate around the second rotating shaft 144 .

[0106] At the same time, the second connecting rod 142 also has a fifth mounting portion extending toward the sliding cover 120, and the sliding cover 120 has a sixth mounting portion located at both ends of the fifth mounting portion, and the third rotating shaft 145 is passed between the fifth mounting portion and the sixth mounting portion, so that the second connecting rod 142 and the sliding cover 120 can both rotate around the third rotating shaft 145.

[0107] The embodiment of the present application connects the main rocker arm 130 of the pushing assembly 140 and the first link 141 through the first rotating shaft 143, connects the first link 141 and the second link 142 through the second rotating shaft 144, and connects the second link 142 and the sliding cover 120 on the other side of the main shaft assembly 110 through the third rotating shaft 145. This not only ensures the transmission of force between the main rocker arm 130, the first link 141, the second link 142 and the sliding cover 120, but also simplifies the connection structure between the main rocker arm 130, the first link 141, the second link 142 and the sliding cover 120, thereby improving the manufacturing efficiency of the hinge mechanism 100.

[0108] Figure 13 yes Figure 4 Schematic diagram of the structure of the spindle assembly. Figure 6 、 Figure 12 and Figure 13 As shown, the spindle assembly 110 of the embodiment of the present application may include a fixed seat 111 and at least two main rotating shafts 112, wherein the two main rotating shafts 112 are respectively arranged on both sides of the axis of the fixed seat 111, and the extension direction of the main rotating shaft 112 is consistent with the extension direction of the fixed seat 111. Figure 10 As shown, an installation channel 131 is formed at one end of the main rocker arm 130 close to the fixed seat 111, and the main rotating shaft 112 is passed through the installation channel 131, and the main rocker arm 130 can rotate around the main rotating shaft 112, thereby improving the rotation reliability of the two main rocker arms 130 and preventing the main rocker arm 130 from driving the sliding cover plate 120 to get stuck or loose during the opening and closing process.

[0109] Reference Figure 13 As shown, for example, the fixing seat 111 of the embodiment of the present application may include a fixing plate 1111 and a plurality of support portions 1112 spaced apart on the fixing plate 1111, the plurality of support portions 1112 being spaced apart along the extension direction of the fixing plate 1111, a through hole 1113 being provided on each support portion 1112, and both ends of any main rotating shaft 112 being respectively fixed in the through holes 1113 of two adjacent support portions 1112.

[0110] Taking two staggered main rotating shafts 112 as an example, the fixing seat 111 may include a fixing plate 1111 and three supporting parts 1112 spaced apart on the fixing plate 1111, each supporting part 1112 is provided with a through hole 1113, and the two main rotating shafts 112 are respectively fixed in the through holes 1113 of the two adjacent supporting parts 1112.

[0111] For the convenience of the following description, the three support portions 1112 arranged along the extension direction of the fixing plate 1111 may be referred to as the first support portion, the second support portion and the third support portion, wherein the second support portion is located between the first support portion and the third support portion. It can be understood that the second support part is provided with two through holes 1113, and the two through holes 1113 are respectively located on both sides of the axis of the fixed seat 111, and the through hole 1113 on the first support part and one of the through holes 1113 on the second support part are arranged relative to each other along the axis direction parallel to the fixed plate 1111, and the through hole 1113 on the third support part and the other through hole 1113 on the second support part are arranged relative to each other along the axis direction parallel to the fixed plate 1111. In this way, it can not only ensure that the two main rotating shafts 112 are stably supported between the first support part and the second support part and between the second support part and the third support part, but also ensure that the two main rotating shafts 112 are staggered on both sides of the axis of the fixed plate 1111, so that the two main rocker arms 130 can be folded around the corresponding main rotating shafts 112 to be parallel to each other, thereby ensuring that the parts of the flexible screen 300 located on both sides of the hinge mechanism 100 are folded into a state parallel to each other.

[0112] In addition, refer to Figure 13 As shown, the main shaft assembly 110 further includes stoppers 113 provided at both ends of the fixing seat 111 , and the flexible screen 300 is restricted between the two stoppers 113 to improve the stability of the flexible screen 300 on the hinge mechanism 100 .

[0113] For example, the stopper 113 may include a fixing portion 1131 and a stopper 1132, wherein the fixing portion 1131 is fixed to the fixing seat 111, and the stopper 1132 is fixed to one end of the fixing portion 1131, and the radial dimension of the stopper 1132 is greater than the radial dimension of the fixing seat 111, so as to ensure that a portion of the stopper 1132 extends out of the outer surface of the fixing seat 111. When the hinge mechanism 100 of the embodiment of the present application is assembled with the flexible screen 300, the flexible screen 300 is disposed between the two stopper portions 1132, thereby limiting the movement of the flexible screen 300 located outside the hinge mechanism 100 in the extension direction of the fixing seat 111.

[0114] It can be understood that the outer surface of the fixing base 111 refers to the side of the fixing base 111 facing the flexible screen 300 .

[0115] Figure 14 This is an assembly diagram of the second hinge mechanism and frame provided in an embodiment of the present application. Figure 15 yes Figure 14 Schematic diagram of part of the structure of the hinge mechanism. Figure 14 and Figure 15 As shown, in order to further improve the stability of the flexible screen 300 on the outside of the hinge mechanism 100, the hinge mechanism 100 of the embodiment of the present application may further include two connecting support plates 150 and two side support plates 160, wherein the two connecting support plates 150 are rotatably connected to the two ends of the fixing seat 111 along the width direction, and the two side support plates 160 are respectively rotatably connected to the end of the connecting support plate 150 away from the fixing seat 111, and the ends of the two side support plates 160 away from the connecting support plate 150 are used to connect to the corresponding frame 200, wherein the width direction of the fixing seat 111 (such as Figure 14 The direction indicated by the arrow x in the middle) is perpendicular to the extension direction of the fixing base 111 (such as Figure 14 direction indicated by arrow y).

[0116] Figure 16 yes Figure 14 Assembly diagram of the middle hinge mechanism and the flexible screen in the folded state. Figure 17 yes Figure 14 One of the states of the middle hinge mechanism and the flexible screen during the unfolding process. Figure 18 yes Figure 14 Assembly drawing of the middle hinge mechanism and the flexible screen in the unfolded state. Figures 15 to 18As shown, the sliding cover plate 120 of the embodiment of the present application is fixed on the side surface support plate 160 away from the main swing rod 130, and the part of the flexible screen body 300 of the folding screen device is covered on the fixed seat 111, the connecting support plate 150 and the side surface support plate 160 away from the sliding cover plate 120, so that the flexible screen body 300 can be stably attached to the outer surface of the hinge mechanism 100 in any state. It can be understood that the flexible screen body 300 is located on the same side of the fixed seat 111, the connecting support plate 150 and the side surface support plate 160.

[0117] The embodiment of the present application can effectively support the back of the flexible screen body 300 by sequentially arranging the connecting support plate 150 and the side surface support plate 160 on both sides of the fixed seat 111, and rotating connecting the two ends of the connecting support plate 150 with the side surface support plate 160 and the fixed seat 111 respectively, so that the fixed seat 111, the connecting support plate 150 and the side surface support plate 160 can be connected into a complete mechanism.

[0118] Wherein, when the connecting support plate 150 is connected with the fixed seat 111, it can be hinged together through a hinge or the like structure, so as to ensure that the connecting support plate 150 can rotate around one side of the fixed seat 111 with the opening and closing of the main swing rod 130, thereby realizing the unfolding and folding of the connecting support plate 150.

[0119] Figure 19 is Figure 18 In one direction, the cross-sectional view is shown. Referring to Figure 19 As shown, in some examples, an arc-shaped limiting structure 170 can be arranged between the fixed seat 111 and the connecting support plate 150, and the connecting support plate 150 rotates along a predetermined path under the guidance of the arc-shaped limiting structure 170. Wherein, the predetermined path is parallel to the movement path of the flexible screen body 300 on the connecting support plate 150.

[0120] The embodiment of the present application controls the included angle between the connecting support plate 150 and the fixed seat 111 in the unfolding and folding process of the connecting support plate 150 by arranging the arc-shaped limiting structure 170 between the fixed seat 111 and the connecting support plate 150 and making the connecting support plate 150 rotate along a path parallel to the movement path of the flexible screen body 300 under the guidance of the arc-shaped limiting structure 170, so as to ensure that the connecting support plate 150 always supports the back of the flexible screen body 300 during the unfolding or folding process of the hinge mechanism 100, and ensure that the flexible screen body 300 will not be bent.

[0121] As Figures 16 to 18 As shown, during the unfolding process of the hinge mechanism 100, the connecting support plate 150 of the hinge mechanism 100 continuously adjusts its rotation angle under the guidance of the arc-shaped limiting structure 170, so as to ensure that the connecting support plate 150 always supports the back of the flexible screen body 300.

[0122] Continue to refer to Figure 19 As shown, in a specific implementation, the arc-shaped limiting structure 170 includes an arc-shaped protrusion 171 and an arc-shaped groove 172 matching the arc-shaped protrusion 171; the arc-shaped protrusion 171 is arranged on one of the fixing seat 111 and the connecting support plate 150, and the arc-shaped groove 172 is arranged on the other of the fixing seat 111 and the connecting support plate 150. For example, an arc-shaped protrusion 171 can be extended from one side of the fixed seat 111 toward the connecting support plate 150, and the curved path of the arc-shaped protrusion 171 is parallel to the moving path of the flexible screen 300. Accordingly, an arc-shaped groove 172 is formed on the side of the connecting support plate 150 facing the fixed seat 111, and the arc-shaped groove 172 matches the arc-shaped protrusion 171, and the arc-shaped protrusion 171 extends into the arc-shaped groove 172. In this way, during the unfolding process of the two main rocker arms 130, the arc-shaped protrusion 171 will move along the extension direction of the arc-shaped groove 172, so that the connecting support plate 150 is unfolded from one side of the fixed seat 111 along a preset path, which not only realizes the supporting function of the flexible screen 300, but also simplifies the structural setting of the arc-shaped limiting structure 170, thereby improving the manufacturing efficiency of the hinge mechanism 100.

[0123] It is understood that the curved path, i.e., the extending direction, of the arc-shaped protrusion 171 is consistent with the rotation path of the corresponding main rocker 130. This ensures that the angles of the connecting support plate 150 and the main rocker 130 are consistent during rotation, thereby ensuring that the movable path of the connecting support plate 150 is parallel to the movable path of the flexible screen 300 located outside the connecting support plate 150, so that effective support for the flexible screen 300 can be achieved during the deployment of the main rocker 130. The connecting support plate 150 and the main rocker 130 located on the same side of the fixing base 111 correspond to each other.

[0124] The connecting support plate 150 of the embodiment of the present application can be an integrally formed plate-like member when specifically configured, and the arc-shaped limiting structure 170, such as the arc-shaped protrusion 171, can be integrally formed on the connecting support plate 150. This can reduce the number of parts of the hinge mechanism 100, thereby improving the assembly efficiency of the hinge mechanism 100.

[0125] Reference Figure 14As shown, exemplarily, the connecting support plate 150 may further include a main body 151 and a connecting portion 152, wherein the main body 151 is located on one side of the fixing seat 111, and a mounting hole (not shown in the figure) is opened on the main body 151, and the connecting portion 152 is detachably embedded in the mounting hole, and the arc-shaped limiting structure 170 is arranged between the fixing seat 111 and the connecting portion 152 to facilitate the setting of the arc-shaped limiting structure 170. For example, when the connecting portion 152 is not assembled to the main body 151, the arc-shaped limiting structure 170 can be arranged between the connecting portion 152 and the fixing seat 111, and then the connecting portion 152 can be assembled on the main body 151, so that the setting of the arc-shaped limiting structure 170 is more convenient.

[0126] Taking the formation of the arc groove 172 on the connecting support plate 150 as an example, the arc groove 172 is formed on the connecting portion 152 by setting the connecting support plate 150 as a main body 151 and a connecting portion 152 that are detachably connected. In this way, before the connecting portion 152 is assembled to the main body 151, the arc groove 172 can be first set on the connecting portion 152, and then the connecting portion 152 with the arc groove 172 is embedded in the mounting hole of the main body 151 to complete the assembly of the connecting support plate 150. In this way, the production of the arc groove 172 is more convenient and quick.

[0127] Figure 20 yes Figure 18 A cross-sectional view from another direction. Figure 20 As shown, when the side support plate 160 of the embodiment of the present application is assembled with the connecting support plate 150, a mounting groove 161 can be formed on the side of the side support plate 160 close to the connecting support plate 150, and an extension portion 153 extends from the connecting support plate 150, and the extension portion 153 matches the mounting groove 161. When the side support plate 160 is unfolded with the sliding cover plate 120, the extension portion 153 moves along the mounting groove 161, thereby not only ensuring that the side support plate 160 can rotate to a flattened state as the sliding cover plate 120 is unfolded, but also enabling the side support plate 160 to cooperate with the sliding cover plate 120 to move in a direction away from the fixed seat 111.

[0128] In order to ensure that the extension portion 153 can be firmly fixed in the mounting groove 161, a second limiting groove (not shown in the figure) is formed on two opposite side walls of the mounting groove 161 in the embodiment of the present application, and a connecting shaft extends from two opposite side walls of the extension portion 153, and at least a portion of the connecting shaft extends into the second limiting groove, ensuring that the extension portion 153 can rotate stably in the mounting groove 161, while also improving the stability of the extension portion 153 in the mounting groove 161.

[0129] The extension 153 can be arranged on the connecting portion 152 of the connecting support plate 150 to facilitate the manufacture of the extension 153. For example, an extension 153 can be integrally formed on the connecting portion 152 before the connecting portion 152 of the connecting support plate 150 is assembled to the fixing portion 1131, and then the connecting portion 152 provided with the extension 153 is embedded in the mounting hole of the fixing portion 1131 to complete the assembly of the connecting support plate 150.

[0130] Referring to Figures 1 to 3 As shown in FIG. 1, the application also provides a folding screen device, which comprises a flexible screen body 300 and the hinge mechanism 100 as described above, and the flexible screen body 300 is arranged on the surface of the hinge mechanism 100. In this embodiment, the flexible screen body 300 is arranged on the side of the sliding cover plate 120 away from the main swing rod 130.

[0131] In actual application, the folding screen device further comprises two frame bodies 200. When the hinge mechanism 100 is assembled on the folding screen device, the two ends of the two sliding cover plates 120 of the hinge mechanism 100 away from the main shaft assembly 110 are connected with the two frame bodies 200, and the flexible screen body 300 of the folding screen device is arranged on the outer side of the sliding cover plate 120 (the side away from the main swing rod 130) and the outer surface of the two frame bodies 200. That is, the hinge mechanism 100 of this embodiment is an outer folding hinge mechanism 100, and when the hinge mechanism 100 is applied to the folding screen device, the folding screen device is an outer folding screen device.

[0132] The folding screen device provided by the application can ensure that the length of the arc formed on the outer side of the hinge mechanism 100 is always consistent with the length of the flexible screen body 300, so that the hinge mechanism 100 does not interfere with the flexible screen body 300 by external force, thereby avoiding damage to the flexible screen body 300 during the unfolding process and prolonging the service life of the folding screen device.

[0133] It should be noted that the folding screen device of the application can include but is not limited to mobile or fixed terminals with folding screens such as mobile phones, tablet computers, notebook computers, ultra-mobile personal computers (UMPC), handheld computers, interphones, netbooks, POS machines, personal digital assistants (PDA), wearable devices, virtual reality devices, etc.

[0134] In the description of the embodiments of the present application, it should be noted that unless specifically stated and limited otherwise, the terms "mount", "connect", "connection" should be understood broadly, for example, can be fixed connection, can also be indirect connection through an intermediate medium, can be the internal communication of two elements or the interaction relationship of two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0135] The terms "first", "second", "third", "fourth" and the like (if any) in the description of the embodiments of the present application and the claims and the above drawings are used to distinguish similar objects, and do not necessarily have to describe a specific order or sequence.

Claims

1. A hinge mechanism, characterized in that: The hinge mechanism includes a main shaft assembly, two sliding cover plates and at least two main rocker arms; At least two of the main swing arms are rotatably connected to both sides of the axis of the main shaft assembly, and the two sliding cover plates are respectively located on one side of the corresponding main swing arm. Each of the main swing arms is slidably arranged on the inner side of the sliding cover plate. The two main swing arms can drive the two sliding cover plates to fold toward the inner sides of each other or to unfold toward the inner sides away from each other to the same horizontal plane. The hinge mechanism also includes at least two pushing assemblies, each of which includes a first connecting rod and a second connecting rod. The first end of the first connecting rod is rotatably connected to the main rocker arm, the second end of the first connecting rod is rotatably connected to the first end of the second connecting rod, and the second end of the second connecting rod is rotatably connected to the sliding cover plate on the other side of the main shaft assembly; The main shaft assembly includes a fixed seat and at least two main rotating shafts; The two main rotating shafts are respectively arranged on both sides of the axis of the fixed seat, and the extension direction of the main rotating shaft is consistent with the extension direction of the fixed seat. An installation channel is formed at one end of the main rocker arm close to the fixed seat. The main rotating shaft is passed through the installation channel, and the main rocker arm can rotate around the main rotating shaft.

2. The hinge mechanism according to claim 1, wherein: At least two of the main rocker arms are staggered along the extension direction of the main shaft assembly.

3. The hinge mechanism according to claim 1, wherein: The pushing assembly further includes a first rotating shaft, a second rotating shaft and a third rotating shaft; A first mounting portion extends from one end of the main rocker arm close to the main shaft assembly, and a second mounting portion extends from the first connecting rod to both ends of the first mounting portion. The first rotating shaft is disposed between the first mounting portion and the second mounting portion. The first connecting rod further comprises a third mounting portion extending toward the second connecting rod, the second connecting rod comprises a fourth mounting portion extending to both ends of the third mounting portion, and the second rotating shaft is disposed between the third mounting portion and the fourth mounting portion; The second connecting rod further has a fifth mounting portion extending toward the sliding cover plate. The sliding cover plate has sixth mounting portions located at both ends of the fifth mounting portion. The third rotating shaft is disposed between the fifth mounting portion and the sixth mounting portion.

4. The hinge mechanism according to any one of claims 1 to 3, characterized in that: A sliding groove is formed on the sliding cover, and the sliding groove extends along the moving direction of the main rocker. The slide groove has a first limiting groove on two groove walls arranged perpendicular to the extension direction, and a clamping part extends on the two opposite side walls of the main rocker arm. The main rocker arm is slidably arranged in the slide groove, and at least part of the clamping part extends into the first limiting groove.

5. The hinge mechanism according to claim 4, characterized in that: The slide has a first end close to the spindle assembly and a second end away from the spindle assembly; When the hinge mechanism is converted from a folded state to an unfolded state, the main rocker slides in the slide groove along the second end of the slide groove toward the first end of the slide groove.

6. The hinge mechanism according to claim 5, characterized in that: The sliding cover plate includes two side walls arranged along the width direction, and the two ends of the sliding groove along the extension direction respectively pass through the two side walls of the sliding cover plate, wherein the width direction of the sliding cover plate is consistent with the extension direction of the sliding groove.

7. A folding screen device, characterized in that: Comprising a flexible screen and the hinge mechanism according to any one of claims 1 to 6; The flexible screen body is provided with the surface of the hinge mechanism, wherein the flexible screen body is located on the outer side of the sliding cover plate, the main rocker arm is slidably connected to the inner side of the sliding cover plate, and the inner side of the sliding cover plate and the outer side of the sliding cover plate are two surfaces of the sliding cover plate arranged opposite to each other along the thickness direction.

8. The folding screen device according to claim 7, characterized in that: The folding screen device includes two frames; The two frames are respectively connected to the two sliding cover plates, and the frames are located on a side of the sliding cover plate away from the main shaft assembly; The flexible screen is connected to the two frames.

9. The folding screen device according to claim 8, characterized in that: When the folding screen device is in a flattened state, the outer surface of the frame and the outer side of the sliding cover are located in the same horizontal plane, and the outer surface of the frame is the surface where the frame is connected to the flexible screen body.

10. The folding screen device according to claim 7, characterized in that: The spindle assembly further includes stoppers arranged at both ends of the fixing seat. The flexible screen is confined between the two stoppers.

11. The folding screen device according to claim 7, characterized in that: The hinge mechanism further comprises two connecting support plates and two side support plates; The two connecting support plates are rotatably connected to both ends of the fixing base along the width direction, and the two side support plates are respectively rotatably connected to one end of the connecting support plate away from the fixing base, wherein the width direction of the fixing base is perpendicular to the extension direction of the fixing base; The side of the sliding cover plate facing away from the main rocker arm is fixed to the side support plate, and part of the flexible screen cover is arranged on the side of the fixing seat, the connecting support plate and the side support plate facing away from the sliding cover plate.

12. The folding screen device according to claim 11, characterized in that: An arc-shaped limiting structure is provided between the fixing seat and the connecting support plate; The connecting support plate rotates along a predetermined path under the guidance of the arc-shaped limiting structure, and the predetermined path is parallel to the moving path of the flexible screen body on the connecting support plate.

13. The folding screen device according to claim 12, characterized in that: The arc-shaped limiting structure includes an arc-shaped protrusion and an arc-shaped groove matching the arc-shaped protrusion; The arc-shaped protrusion is arranged on one of the fixing seat and the connecting support plate, and the arc-shaped groove is arranged on the other of the fixing seat and the connecting support plate.

14. The folding screen device according to claim 12 or 13, characterized in that: The connecting support plate includes a main body portion and a connecting portion; The main body is located at one side of the fixing seat, a mounting hole is provided on the main body, the connecting portion is detachably embedded in the mounting hole, and the arc-shaped limiting structure is arranged between the fixing seat and the connecting portion.

15. The folding screen device according to claim 14, characterized in that: A mounting groove is formed on one side of the side support plate close to the connecting support plate, and an extension portion extends from the connecting support plate, and the extension portion matches the mounting groove; When the side support plate is unfolded along with the sliding cover plate, the extension portion moves along the installation groove.

16. The folding screen device according to claim 15, characterized in that: Second limiting grooves are formed on two opposite side walls of the installation groove, and connecting shafts extend from two opposite side walls of the extension portion, and at least a portion of the connecting shaft extends into the second limiting grooves.

17. The folding screen device according to claim 15, characterized in that: The extending portion is provided on the connecting portion.

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