Rotating shaft mechanism, foldable shell and foldable electronic equipment

Abstract

The invention provides a rotating shaft mechanism, a foldable shell and foldable electronic equipment. The rotating shaft mechanism comprises a base, a first rotating shaft assembly and a first elastic piece. The first rotating shaft assembly comprises a first rotating shaft, a first movable seat, a first connecting rod arm and a second connecting rod arm. The first movable seat is arranged on one side of the base. The first connecting rod arm and the second connecting rod arm are arranged between the base and the first movable seat in a spaced mode. The first connecting rod arm and the second connecting rod arm are rotationally connected with the base through a first rotating shaft and are in sliding connection with the first movable base. The side, deviating from the second connecting rod arm, of the first connecting rod arm slidably contacts with the first movable seat. The side, deviating from the first connecting rod arm, of the second connecting rod arm slidably contacts with the first movable seat. The first elastic member is disposed between the first link arm and the second link arm in a compressed state. According to the rotating shaft mechanism, the foldable shell and the foldable electronic equipment, the torsion is increased, and the hovering effect is improved.

Description

Technical Field

[0001] The present application relates to the field of electronic technology, and in particular to a hinge mechanism, a foldable housing and a foldable electronic device. Background Art

[0002] As foldable electronic devices become thinner and smaller, the structural dimensions of the hinge mechanism are correspondingly reduced, resulting in insufficient torque of the hinge mechanism, making it difficult to achieve a good hovering effect. Summary of the invention

[0003] The present application provides a rotating shaft mechanism, a foldable housing and a foldable electronic device that can increase torque and improve hovering effect.

[0004] On the one hand, the present application provides a rotating shaft mechanism, comprising:

[0005] Pedestal;

[0006] A first rotating shaft assembly includes a first rotating shaft, a first movable seat, a first connecting arm and a second connecting arm, wherein the first movable seat is arranged at one side of the base, the first connecting arm and the second connecting arm are arranged between the base and the first movable seat and are spaced apart, the first connecting arm is rotatably connected to the base via the first rotating shaft, and the first connecting arm is slidably connected to the first movable seat, a side of the first connecting arm away from the second connecting arm is in sliding contact with the first movable seat, the second connecting arm is rotatably connected to the base via the first rotating shaft, and the second connecting arm is slidably connected to the first movable seat, and a side of the second connecting arm away from the first connecting arm is in sliding contact with the first movable seat; and

[0007] The first elastic member is interposed between the first link arm and the second link arm in a compressed state, and is used for pressing the first link arm toward a side away from the second link arm, and pressing the second link arm toward a side away from the first link arm.

[0008] On the other hand, the present application also provides a foldable shell, including a first shell, a second shell and the above-mentioned pivot mechanism, the first shell is arranged on one side of the pivot mechanism and is connected to the first link arm and the second link arm, the first shell can drive the first link arm and the second link arm to rotate relative to the base, the second shell is arranged on the other side of the pivot mechanism, and the second shell can move toward the first shell to fold, or move away from the first shell to unfold.

[0009] On the other hand, the present application also provides a foldable electronic device, including a flexible display and the foldable shell, the flexible display covers the first shell, the hinge mechanism and the second shell, and the flexible display includes a first non-bending display area, a bending display area and a second non-bending display area arranged in sequence, the first non-bending display area is fixedly connected to the first shell, and the second non-bending display area is fixedly connected to the second shell.

[0010] In the pivot mechanism provided by the present application, the first connecting rod arm and the second connecting rod arm are arranged between the base and the first movable seat and are arranged at intervals. The first connecting arm and the second connecting arm are both rotatably connected to the base through the first rotating shaft, and the first connecting arm and the second connecting arm are both slidably connected to the first movable seat. The side of the first connecting arm away from the second connecting arm is in sliding contact with the first movable seat, and the side of the second connecting arm away from the first connecting arm is in sliding contact with the first movable seat. The first elastic member is between the first connecting arm and the second connecting arm in a compressed state, and is used to squeeze the first connecting arm toward the side away from the second connecting arm, and squeeze the second connecting arm toward the side away from the first connecting arm. Therefore, under the action of the first elastic member, the friction between the first connecting arm and the first movable seat and between the second connecting arm and the first movable seat is increased during their relative sliding, thereby increasing the torque of the pivot mechanism and improving the hovering effect on one side of the pivot mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments are briefly introduced below.

[0012] Figure 1 A schematic diagram of the planar structure of the foldable electronic device provided in an embodiment of the present application when in a flattened state;

[0013] Figure 2 A schematic diagram of the planar structure of a foldable electronic device provided in an embodiment of the present application when in a folded state;

[0014] Figure 3 A schematic diagram of a planar structure of a foldable electronic device provided in an embodiment of the present application when in a hovering state;

[0015] Figure 4 for Figure 1 A schematic diagram of the planar structure of a foldable housing in a foldable electronic device is shown;

[0016] Figure 5 for Figure 2 A schematic diagram of the planar structure of a flexible display screen in a foldable electronic device is shown;

[0017] Figure 6 for Figure 5The flexible display screen shown is a schematic diagram of a planar structure in the shape of a water drop;

[0018] Figure 7 A schematic diagram of the structure of one side of the rotating shaft mechanism provided in an embodiment of the present application when the rotating shaft mechanism is in a flattened state;

[0019] Figure 8 A schematic diagram of the structure of one side of the rotating shaft mechanism provided in an embodiment of the present application when the rotating shaft mechanism is in a folded state;

[0020] Fig. 9 A schematic diagram of the structure of the rotating shaft mechanism provided in an embodiment of the present application when it is in a flattened state;

[0021] Fig.10 A schematic diagram of the structure of the rotating shaft mechanism provided in an embodiment of the present application when it is in a folded state;

[0022] Fig.11 for Figure 7 A schematic diagram of the exploded structure of the base, the first connecting rod arm, the second connecting rod arm, the first movable seat and the first elastic member in the rotating shaft mechanism;

[0023] Fig.12 for Fig. 9 A schematic diagram of the exploded structure of the base, the first rotating shaft assembly, the third connecting rod arm, the fourth connecting rod arm, the second movable seat and the third elastic member in the rotating shaft mechanism;

[0024] Fig.13 for Fig. 9 A schematic structural diagram of a rotating shaft mechanism in which the first connecting rod arm and the first movable seat are respectively slidably connected with the first sliding connection surface, the second sliding connection surface and the third sliding connection surface through the first top surface, the first side surface and the first bottom surface, the second connecting rod arm and the second movable seat are respectively slidably connected with the fourth sliding connection surface, the fifth sliding connection surface and the sixth sliding connection surface through the second top surface, the second side surface and the second bottom surface, the third connecting rod arm and the second movable seat are respectively slidably connected with the seventh sliding connection surface, the eighth sliding connection surface and the ninth sliding connection surface through the third top surface, the third side surface and the third bottom surface, and the fourth connecting rod arm and the second movable seat are respectively slidably connected with the tenth sliding connection surface, the eleventh sliding connection surface and the twelfth sliding connection surface through the fourth top surface, the fourth side surface and the fourth bottom surface;

[0025] Fig.14 for Fig. 9 The rotating shaft mechanism shown also includes a schematic diagram of the structure of a torsion assembly;

[0026] Fig.15 for Fig.14 An exploded schematic diagram of the torsion assembly, the first rotating shaft assembly, and the second rotating shaft assembly of the rotating shaft mechanism;

[0027] Fig.16 for Fig.14 A schematic diagram of the structure in which the base of the rotating shaft mechanism includes a first limiting portion and a second limiting portion arranged at intervals;

[0028] Fig.17 for Fig.16 The first rotating shaft assembly of the rotating shaft mechanism shown also includes a structural schematic diagram of a first rotating arm and a first rotating connecting member;

[0029] Fig.18 for Fig.17 A schematic cross-sectional view of the rotational connection between the first rotating arm and the first rotating connecting member when the rotating shaft mechanism is in a folded state;

[0030] Fig.19 for Fig.16 A schematic diagram of a structure in which the first rotating arm of the rotating shaft mechanism is rotatably connected to the base through the cooperation of the second circular arc groove and the second circular arc block, and the second rotating arm is rotatably connected to the base through the cooperation of the fourth circular arc groove and the fourth circular arc block;

[0031] Fig. 20 for Fig.19 The rotating shaft mechanism shown also includes a synchronous member, and is a schematic structural diagram of the rotating shaft mechanism when it is in a folded state;

[0032] Fig.21 for Fig. 20 A schematic diagram of the exploded structure of the synchronous member and the base, the first rotating shaft assembly, and the second rotating shaft assembly of the rotating shaft mechanism shown;

[0033] Fig. 22 for Fig.19 The rotating shaft mechanism shown also includes a synchronous component, and is a schematic structural diagram of the rotating shaft mechanism when it is in a folded state.

[0034] Description of reference numerals:

[0035] Foldable electronic device 1000; foldable housing 100; first housing 11; second housing 12; flexible display screen 200; first non-bending display area 21; bending display area 22; second non-bending display area 23; first sub-bending display area 221; second sub-bending display area 222; third sub-bending display area 223; hinge mechanism 10; base 101; first hinge assembly 102; first elastic member 103; second hinge assembly 104; third elastic member 105; first hinge 120; first movable seat 121; first connecting rod arm 122; second connecting rod arm 123; second hinge 140; second movable seat 1 41; third link arm 142; fourth link arm 143; first support connection portion 1220; second support connection portion 1230; third support connection portion 1420; fourth support connection portion 1430; first side surface 1221; first top surface 1222; first bottom surface 1223; second side surface 1231; second top surface 1232; second bottom surface 1233; first sliding connection surface 121a; second sliding connection surface 121b; third sliding connection surface 121c; third side surface 1421; third top surface 1422; third bottom surface 1423; seventh sliding connection surface 141a; eighth sliding connection surface 141b; third The ninth sliding connection surface 141c; the fourth top surface 1431; the fourth side surface 1432; the fourth bottom surface 1433; the tenth sliding connection surface 141d; the eleventh sliding connection surface 141e; the twelfth sliding connection surface 141f; the torsion assembly 106; the extrusion member 161; the second elastic member 162; the first cam portion 1610; the second cam portion 1224; the fourth elastic member 163; the third cam portion 1611; the fourth cam portion 1424; the first limiting portion 110; the second limiting portion 111; the first rotating connection portion 1225; the second rotating connection portion 1226; the third rotating connection portion 1234; the third limiting portion 113 ; fourth limiting portion 114; fourth rotating connection portion 1425; fifth rotating connection portion 1426; sixth rotating connection portion 1434; first rotating arm 124; first rotating connecting member 125; first circular arc groove 1250; first circular arc block 1240; second rotating arm 144; second rotating connecting member 145; third circular arc groove 1450; third circular arc block 1440; second circular arc groove 115; second circular arc block 1241; fourth circular arc groove 116; fourth circular arc block 1441; synchronizer 107; first spiral surface 171; second spiral surface 172; third spiral surface 173; fourth spiral surface 174. DETAILED DESCRIPTION

[0036] The technical solution provided by the present application will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the embodiments described in the present application are only a part of the embodiments, not all of the embodiments. Based on the embodiments described in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present application.

[0037] References to "embodiments" and "implementations" in this application mean that the specific features, structures, or characteristics described in conjunction with the embodiments or implementations may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it mutually exclusive, independent, or alternative to other embodiments. It can be explicitly and implicitly understood by those skilled in the art that the embodiments described in this application can be combined with other embodiments.

[0038] The terms "first", "second", etc. in the specification and claims of this application and the above-mentioned drawings are used to distinguish different objects rather than to describe a specific order; in addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0039] Please refer to Figures 1 to 3 , Figure 1 This is a schematic diagram of the planar structure of the foldable electronic device 1000 provided in an embodiment of the present application when it is in a flattened state. Figure 2 This is a schematic diagram of the planar structure of the foldable electronic device 1000 provided in an embodiment of the present application when it is in a folded state. Figure 3 A schematic diagram of the planar structure of the foldable electronic device 1000 provided in an embodiment of the present application when it is in a hovering state. The foldable electronic device 1000 provided in the present application may be a foldable mobile phone, a foldable tablet, a foldable e-book, etc. In the embodiment of the present application, a foldable mobile phone is taken as an example. The foldable electronic device 1000 has a flattened state, a folded state, and one or more hovering states. During use, the foldable electronic device 1000 can switch between the flattened state, the folded state, and the hovering state.

[0040] The foldable electronic device 1000 includes a flexible display screen 200 and a foldable housing 100. It can be understood that when the foldable electronic device 1000 is in a flat state, the flexible display screen 200 and the foldable housing 100 are in a flat state; when the foldable electronic device 1000 is in a folded state, the flexible display screen 200 and the foldable housing 100 are in a folded state; when the foldable electronic device 1000 is in a hovering state, the flexible display screen 200 and the foldable housing 100 are in a hovering state.

[0041] like Figure 4 As shown, Figure 4 for Figure 1 A schematic diagram of the planar structure of the foldable shell 100 in the foldable electronic device 1000 is shown. The foldable shell 100 includes a first shell 11, a second shell 12 and a hinge mechanism 10. The first shell 11 is arranged on one side of the hinge mechanism 10, and the second shell 12 is arranged on the other side of the hinge mechanism 10. In the present application, the first shell 11 and the second shell 12 are arranged on opposite sides of the hinge mechanism 10. The present application does not specifically limit the structure of the first shell 11 and the structure of the second shell 12. In a possible embodiment, the first shell 11 may include a rectangular frame, and the second shell 12 may include a rectangular frame. The first shell 11 and the second shell 12 can move toward each other to fold, or the first shell 11 and the second shell 12 can move away from each other to unfold. Specifically, Figure 4 Taking the foldable shell 100 shown as an example, in the process of switching the foldable shell 100 from the flattened state to the folded state, the first shell 11 gradually rotates in the clockwise direction, and the second shell 12 gradually rotates in the counterclockwise direction; in the process of switching the foldable shell 100 from the folded state to the flattened state, the first shell 11 gradually rotates in the counterclockwise direction, and the second shell 12 gradually rotates in the clockwise direction.

[0042] It can be understood that when the foldable shell 100 is in a flattened state, the hinge mechanism 10 is in a flattened state; when the foldable shell 100 is in a folded state, the hinge mechanism 10 is in a folded state; when the foldable shell 100 is in a folded state, the hinge mechanism 10 is in a folded state; when the foldable shell 100 is in a suspended state, the hinge mechanism 10 is in a suspended state. Among them, the foldable shell 100 in a flattened state can be understood as the angle between the first shell 11 and the second shell 12 is 180° or close to 180°. The foldable shell 100 in a folded state can be understood as the angle between the first shell 11 and the second shell 12 is 0° or close to 0°. The foldable shell 100 in a suspended state can be understood as the angle between the first shell 11 and the second shell 12 is any angle between 0° and 180°.

[0043] Please refer to Figure 4 and Figure 5 The flexible display screen 200 includes a first non-bending display area 21, a bending display area 22, and a second non-bending display area 23 arranged in sequence. The first non-bending display area 21 covers the first shell 11. The bending display area 22 covers the hinge mechanism 10. The second non-bending display area 23 covers the second shell 12.

[0044] The flexible display screen 200 may be a flexible organic light-emitting diode (OLED) display screen. The first non-bending display area 21 may be fixedly connected to the first shell 11. The second non-bending display area 23 may be fixedly connected to the second shell 12. Optionally, the non-display side of the first non-bending display area 21 is bonded to the first shell 11, and the non-display side of the second non-bending display area 23 is bonded to the second shell 12. When the flexible display screen 200 switches between the flattened state, the folded state, and the hovering state, the first non-bending display area 21 and the second non-bending display area 23 do not bend. The bending display area 22 may be unconnected or partially connected to the hinge mechanism 10. The bending display area 22 is flattened when the flexible display screen 200 is in the flattened state, and the bending display area 22 is bent when the flexible display screen 200 is in the folded state.

[0045] In a possible embodiment, Figure 6 As shown, the flexible display screen 200 may be in a water drop shape when in a folded state. Specifically, the bending display area 22 may include a first sub-bending display area 221, a second sub-bending display area 222, and a third sub-bending display area 223 arranged in sequence. The first sub-bending display area 221 is adjacent to the first non-bending display area 21. The third sub-bending display area 223 is adjacent to the second non-bending display area 23. It can be understood that the flexible display screen 200 includes a first non-bending display area 21, a first sub-bending display area 221, a second sub-bending display area 222, a third sub-bending display area 223, and a second non-bending display area 23 arranged in sequence. When the flexible display screen 200 is in the folded state, the first non-bending display area 21 is opposite to the second non-bending display area 23, the line size between the end of the first sub-bending display area 221 away from the second sub-bending display area 222 and the end of the third sub-bending display area 223 away from the second sub-bending display area 222 is L1, and the line size between the end of the first sub-bending display area 221 close to the second sub-bending display area 222 and the end of the third sub-bending display area 223 close to the second sub-bending display area 222 is L2, and L1 is smaller than L2. In this embodiment, the first sub-bending display area 221 and the third sub-bending display area 223 of the bending display area 22 can be connected to the hinge mechanism 10 and bend respectively under the action of the hinge mechanism 10, and the second sub-bending display area 222 of the bending display area 22 is not connected to the hinge mechanism 10 to be freely bent.

[0046] Please refer to Figure 7 and Figure 8 , Figure 7 This is a structural schematic diagram of one side of the rotating shaft mechanism 10 provided in the embodiment of the present application when it is in a flattened state. Figure 8The structural diagram of one side of the rotating shaft mechanism 10 provided in the embodiment of the present application when in a folded state is shown. The rotating shaft mechanism 10 comprises a base 101 , a first rotating shaft assembly 102 and a first elastic member 103 .

[0047] The base 101 remains stationary during the processes in which the hinge mechanism 10 switches from the flattened state to the suspended state, from the flattened state to the folded state, from the suspended state to the flattened state, from the suspended state to the folded state, from the folded state to the suspended state, and from the folded state to the flattened state.

[0048] The first rotating shaft assembly 102 includes a first rotating shaft 120, a first movable seat 121, a first connecting rod arm 122 and a second connecting rod arm 123. The first connecting rod 121 is arranged on one side of the base 101. In the embodiment of the present application, the first movable seat 121 is arranged at intervals on the left side of the base 101 when the rotating shaft mechanism 10 is in a flattened state. Of course, in other embodiments, the first movable seat 121 can be arranged at intervals on the right side of the base 101 when the rotating shaft mechanism 10 is in a flattened state. The first movable seat 121 can be fixedly connected to the first shell 11. For example, the first movable seat 121 and the first shell 11 can be fixedly connected by bonding, welding, bolt connection, snap connection, etc. The first connecting rod arm 122 and the second connecting rod arm 123 are arranged between the base 101 and the first movable seat 121 and are arranged at intervals. The present application does not specifically limit the interval distance between the first connecting rod arm 122 and the second connecting rod arm 123.

[0049] The first connecting arm 122 is rotatably connected to the base 101 through the first rotating shaft 120. For example, the first connecting arm 122 is rotatably connected to the first rotating shaft 120, and the first rotating shaft 120 is fixedly connected to the base 101; or, the first connecting arm 122 is fixedly connected to the first rotating shaft 120, and the first rotating shaft 120 is rotatably connected to the base 101. In a possible embodiment, the first rotating shaft 120 is fixedly connected to the base 101, and the first connecting arm 122 is provided with a first shaft hole, and the first rotating shaft 120 passes through the first shaft hole, so that the first connecting arm 122 is rotatably connected to the base 101. The first connecting arm 122 is slidably connected to the first movable seat 121. For example, the first connecting arm 122 and the first movable seat 121 are slidably connected through the cooperation of a slider and a slide groove. Optionally, the first connecting arm 122 is provided with a slider, and the first movable seat 121 is provided with a slide groove; or, the first connecting arm 122 is provided with a slide groove, and the first movable seat 121 is provided with a slider. The side of the first link arm 122 away from the second link arm 123 is in sliding contact with the first movable seat 121. It can be understood that during the relative sliding between the first link arm 122 and the first movable seat 121, the side of the first link arm 122 away from the second link arm 123 is in contact with the first movable seat 121. In the process of relative sliding between the first link arm 122 and the first movable seat 121, the first link arm 122 rotates relative to the base 101. In other words, the process of relative sliding between the first link arm 122 and the first movable seat 121 and the process of rotation of the first link arm 122 relative to the base 101 are both processes in which the state of one side of the hinge mechanism 10 changes, that is, the process in which one side of the hinge mechanism 10 switches between the flattened state, the folded state and the hovering state.

[0050] The second link arm 123 is rotatably connected to the base 101 through the first rotating shaft 120. For example, the second link arm 123 is rotatably connected to the first rotating shaft 120, and the first rotating shaft 120 is fixedly connected to the base 101; or, the second link arm 123 is fixedly connected to the first rotating shaft 120, and the first rotating shaft 120 is rotatably connected to the base 101. In a possible embodiment, the first rotating shaft 120 is fixedly connected to the base 101, the second link arm 123 is provided with a second shaft hole, and the first rotating shaft 120 passes through the second shaft hole, so that the second link arm 123 is rotatably connected to the base 101. The second link arm 123 is slidably connected to the first movable seat 121. For example, the second link arm 123 and the first movable seat 121 are slidably connected through the cooperation of a slider and a slide groove. Optionally, the second link arm 123 is provided with a slider, and the first movable seat 121 is provided with a slide groove; or, the second link arm 123 is provided with a slide groove, and the first movable seat 121 is provided with a slider. The side of the second link arm 123 away from the first link arm 122 is in sliding contact with the first movable seat 121. It can be understood that during the relative sliding between the second link arm 123 and the first movable seat 121, the side of the second link arm 123 away from the first link arm 122 is in contact with the first movable seat 121. In the process of relative sliding between the second link arm 123 and the first movable seat 121, the second link arm 123 rotates relative to the base 101.

[0051] In the present application, since the first link arm 122 and the second link arm 123 are both rotatably connected to the base 101 through the first rotating shaft 120, and the first link arm 122 and the second link arm 123 are both slidably connected to the first movable seat 121, the first link arm 122 and the second link arm 123 rotate synchronously relative to the base 101, and the rotation center of the first link arm 122 and the rotation center of the second link arm 123 are both the axis of the first rotating shaft 120. In the process of the first link arm 122 and the second link arm 123 rotating relative to the base 101, the distance between the first link arm 122 and the second link arm 123 does not change.

[0052] The first elastic member 103 may be a spring, a bellows, etc. In the following embodiments, the first elastic member 103 is taken as an example of a spring. The first elastic member 103 is in a compressed state between the first link arm 122 and the second link arm 123, and is used to press the first link arm 122 toward the side away from the second link arm 123, and press the second link arm 123 toward the side away from the first link arm 122. It can be understood that the first elastic member 103 is always in a compressed state. Among them, one side of the first elastic member 103 can abut against the side of the first link arm 122 facing the second link arm 123, and the other side of the first elastic member 103 can abut against the side of the second link arm 123 facing the first link arm 122. In other words, the first elastic member 103 can directly provide a squeezing force to the first link arm 122 and the second link arm 123. Of course, in other embodiments, the first elastic member 103 can also indirectly provide a squeezing force to the first link arm 122 and the second link arm 123 through an intermediate structure such as a gasket. When the hinge mechanism 10 switches between the flattened state, the folded state, and the suspended state, the state in which the first elastic member 103 is compressed between the first link arm 122 and the second link arm 123 does not change.

[0053] In the rotating shaft mechanism 10 provided in the present application, the first connecting arm 122 and the second connecting arm 123 are arranged between the base 101 and the first movable seat 121 and are arranged at intervals. The first connecting arm 122 and the second connecting arm 123 are both rotatably connected to the base 101 through the first rotating shaft 120, and the first connecting arm 122 and the second connecting arm 123 are both slidably connected to the first movable seat 121. The side of the first connecting arm 122 away from the second connecting arm 123 is in sliding contact with the first movable seat 121, and the side of the second connecting arm 123 away from the first connecting arm 122 is in sliding contact with the first movable seat 121. The first elastic member 103 is in a compressed state between the first connecting arm 122 and the second connecting arm 123, so that the first elastic member 103 can be compressed. Component 103 squeezes the first link arm 122 toward the side away from the second link arm 123, and squeezes the second link arm 123 toward the side away from the first link arm 122, so that the contact reliability and tightness between the first link arm 122 and the first movable seat 121, as well as between the second link arm 123 and the first movable seat 121 are higher, that is, the friction between the first link arm 122 and the first movable seat 121, and the friction between the second link arm 123 and the first movable seat 121 are increased during the relative sliding between the first link arm 122, the second link arm 123 and the first movable seat 121, thereby increasing the torque of the rotating shaft mechanism 10 and improving the hovering effect on one side of the rotating shaft mechanism 10.

[0054] Please refer to Fig. 9 and Fig.10 , Fig. 9 This is a schematic diagram of the structure of the rotating shaft mechanism 10 provided in the embodiment of the present application when it is in a flattened state. Fig.10The structural diagram of the rotating shaft mechanism 10 provided in the embodiment of the present application when in a folded state. The rotating shaft mechanism 10 further includes a second rotating shaft assembly 104 and a third elastic member 105 .

[0055] The second rotating shaft assembly 104 includes a second rotating shaft 140, a second movable seat 141, a third connecting arm 142 and a fourth connecting arm 143. The second movable seat 141 is arranged on the other side of the base 101. In the embodiment of the present application, the second movable seat 141 is arranged at intervals on the right side of the base 101 when the rotating shaft mechanism 10 is in a flattened state. Of course, in other embodiments, the second movable seat 141 can be arranged at intervals on the left side of the base 101 when the rotating shaft mechanism 10 is in a flattened state. The second movable seat 141 can be fixedly connected to the second shell 12. For example, the second movable seat 141 and the second shell 12 can be fixedly connected by bonding, welding, bolt connection, snap connection, etc. The third connecting arm 142 and the fourth connecting arm 143 are arranged between the base 101 and the second movable seat 141 and are arranged at intervals. The present application does not specifically limit the interval distance between the third connecting arm 142 and the fourth connecting arm 143.

[0056] The third link arm 142 is rotatably connected to the base 101 through the second rotating shaft 140. For example, the third link arm 142 is rotatably connected to the second rotating shaft 140, and the second rotating shaft 140 is fixedly connected to the base 101; or, the third link arm 142 is fixedly connected to the second rotating shaft 140, and the second rotating shaft 140 is rotatably connected to the base 101. In a possible embodiment, the second rotating shaft 140 is fixedly connected to the base 101, the third link arm 142 is provided with a third shaft hole, and the second rotating shaft 140 passes through the third shaft hole, so that the third link arm 142 is rotatably connected to the base 101. The third link arm 142 is slidably connected to the second movable seat 141. For example, the third link arm 142 and the second movable seat 141 are slidably connected through the cooperation of a slider and a slide groove. Optionally, the third link arm 142 is provided with a slider, and the second movable seat 141 is provided with a slide groove; or, the third link arm 142 is provided with a slide groove, and the second movable seat 141 is provided with a slider. The side of the third link arm 142 away from the fourth link arm 143 is in sliding contact with the second movable seat 141. It can be understood that during the relative sliding between the third link arm 142 and the second movable seat 141, the side of the third link arm 142 away from the fourth link arm 143 is in contact with the second movable seat 141. In the process of relative sliding between the third link arm 142 and the second movable seat 141, the third link arm 142 rotates relative to the base 101. In other words, the process of relative sliding between the third link arm 142 and the second movable seat 141 and the process of rotation of the third link arm 142 relative to the base 101 are both processes in which the state of the other side of the hinge mechanism 10 changes, that is, the process in which the other side of the hinge mechanism 10 switches between the flattened state, the folded state and the hovering state.

[0057] The fourth link arm 143 is rotatably connected to the base 101 through the second rotating shaft 140. For example: the fourth link arm 143 is rotatably connected to the second rotating shaft 140, and the second rotating shaft 140 is fixedly connected to the base 101; or, the fourth link arm 143 is fixedly connected to the second rotating shaft 140, and the second rotating shaft 140 is rotatably connected to the base 101. In a possible embodiment, the second rotating shaft 140 is fixedly connected to the base 101, and the fourth link arm 143 is provided with a fourth shaft hole, and the second rotating shaft 140 passes through the fourth shaft hole, so that the fourth link arm 143 is rotatably connected to the base 101. The fourth link arm 143 is slidably connected to the second movable seat 141. For example: the fourth link arm 143 and the second movable seat 141 are slidably connected through the cooperation of the slider and the slide groove. Optionally, the fourth link arm 143 is provided with a slider, and the second movable seat 141 is provided with a slide groove; or, the fourth link arm 143 is provided with a slide groove, and the second movable seat 141 is provided with a slider. The side of the fourth link arm 143 away from the third link arm 142 is in sliding contact with the second movable seat 141. It can be understood that during the relative sliding between the fourth link arm 143 and the second movable seat 141, the side of the fourth link arm 143 away from the third link arm 142 is in contact with the second movable seat 141. In the process of relative sliding between the fourth link arm 143 and the second movable seat 141, the fourth link arm 143 rotates relative to the base 101.

[0058] In the present application, since the third link arm 142 and the fourth link arm 143 are both rotatably connected to the base 101 through the second rotating shaft 140, and the third link arm 142 and the fourth link arm 143 are both slidably connected to the second movable seat 141, the third link arm 142 and the fourth link arm 143 rotate synchronously relative to the base 101, and the rotation center of the third link arm 142 and the rotation center of the fourth link arm 143 are both the axis of the second rotating shaft 140. In the process of the third link arm 142 and the fourth link arm 143 rotating relative to the base 101, the distance between the third link arm 142 and the fourth link arm 143 does not change.

[0059] The third elastic member 105 may be a spring, a bellows, etc. In the following embodiments, the third elastic member 105 is taken as an example of a spring. The third elastic member 105 is in a compressed state between the third link arm 142 and the fourth link arm 143, and is used to press the third link arm 142 to the side away from the fourth link arm 143, and to press the fourth link arm 143 to the side away from the third link arm 142. It can be understood that the third elastic member 105 is always in a compressed state. Among them, one side of the third elastic member 105 can abut against the side of the third link arm 142 facing the fourth link arm 143, and the other side of the third elastic member 105 can abut against the side of the fourth link arm 143 facing the third link arm 142. In other words, the third elastic member 105 can directly provide a squeezing force to the third link arm 142 and the fourth link arm 143. Of course, in other embodiments, the third elastic member 105 can also indirectly provide a squeezing force to the third link arm 142 and the fourth link arm 143 through an intermediate structure such as a gasket. When the hinge mechanism 10 switches between the flattened state, the folded state, and the suspended state, the state in which the third elastic member 105 is compressed between the third link arm 142 and the fourth link arm 143 does not change.

[0060] The second rotating shaft assembly 104 and the first rotating shaft assembly 102 can be symmetrically arranged. The structural design of the second rotating shaft assembly 104 in this embodiment can make the third elastic member 105 of the second rotating shaft assembly 104 press the third connecting arm 142 toward the side away from the fourth connecting arm 143, and press the fourth connecting arm 143 toward the side away from the third connecting arm 142, so that the contact reliability and tightness between the third connecting arm 142 and the second movable seat 141, and between the fourth connecting arm 143 and the second movable seat 141 are higher, that is, the friction between the third connecting arm 142 and the second movable seat 141 and the friction between the fourth connecting arm 143 and the second movable seat 141 are increased during the relative sliding between the third connecting arm 142, the fourth connecting arm 143 and the second movable seat 141, thereby increasing the torque on the other side of the rotating shaft mechanism 10 and improving the hovering effect on the other side of the rotating shaft mechanism 10.

[0061] like Fig.11As shown, a first supporting connection portion 1220 is provided on a side of the first link arm 122 facing the second link arm 123. A second supporting connection portion 1230 is provided on a side of the second link arm 123 facing the first link arm 122. The first link arm 122 being provided with the first supporting connection portion 1220 can be understood as the first supporting connection portion 1220 and the first link arm 122 being integrally formed, or it can also be understood as the first supporting connection portion 1220 being fixed to the first link arm 122 by a detachable or non-detachable connection. The second link arm 123 being provided with the second supporting connection portion 1230 can be understood as the second supporting connection portion 1230 and the second link arm 123 being integrally formed, or it can also be understood as the second supporting connection portion 1230 being fixed to the second link arm 123 by a detachable or non-detachable connection. The side of the first supporting connection portion 1220 facing away from the first link arm 122 and the side of the second supporting connection portion 1230 facing away from the second link arm 123 can be in contact with each other or can be arranged at a distance. The present application does not specifically limit the shape of the first supporting connection part 1220 and the shape of the second supporting connection part 1230. For example, the first supporting connection part 1220 can be cylindrical, prismatic, etc.; the second supporting connection part 1230 can be cylindrical, prismatic, etc. In a possible embodiment, the first supporting connection part 1220 can be cylindrical, and the second supporting connection part 1230 can be cylindrical. One end of the first elastic member 103 is sleeved on the first supporting connection part 1220, and the other end is sleeved on the second supporting connection part 1230. Among them, the extension direction of the first supporting connection part 1220 can be parallel to the axial direction of the first rotating shaft 120, and the extension direction of the second supporting connection part 1230 can be parallel to the axial direction of the first rotating shaft 120, so that the compression direction of the first elastic member 103 with one end sleeved on the first supporting connection part 1220 and the other end sleeved on the second supporting connection part 1230 can be parallel to the axial direction of the first rotating shaft 120, so that the first elastic member 103 can squeeze the first connecting arm 122 and the second connecting arm 123 along the axial direction of the first rotating shaft 120, thereby improving the movement reliability of the first rotating shaft assembly 102 and the reliability of increasing the torque of the rotating shaft mechanism 10 through the first elastic member 103.

[0062] Since a first supporting connection portion 1220 is provided on the side of the first link arm 122 facing the second link arm 123, and a second supporting connection portion 1230 is provided on the side of the second link arm 123 facing the first link arm 122, one end of the first elastic member 103 is sleeved on the first supporting connection portion 1220, and the other end is sleeved on the second supporting connection portion 1230. Therefore, the first supporting connection portion 1220 and the second supporting connection portion 1230 can jointly support the first elastic member 103, so that the first elastic member 103 can be stably located between the first link arm 122 and the second link arm 123 in a compressed state.

[0063] like Fig.12 As shown, a third supporting connection portion 1420 is provided on a side of the third link arm 142 facing the fourth link arm 143. A fourth supporting connection portion 1430 is provided on a side of the fourth link arm 143 facing the third link arm 142. The third link arm 142 being provided with the third supporting connection portion 1420 can be understood as the third supporting connection portion 1420 and the third link arm 142 being integrally formed, or it can also be understood as the third supporting connection portion 1420 being fixed to the third link arm 142 by a detachable or non-detachable connection. The fourth link arm 143 being provided with the fourth supporting connection portion 1430 can be understood as the fourth supporting connection portion 1430 and the fourth link arm 143 being integrally formed, or it can also be understood as the fourth supporting connection portion 1430 being fixed to the fourth link arm 143 by a detachable or non-detachable connection. The side of the third supporting connection part 1420 away from the third link arm 142 and the side of the fourth supporting connection part 1430 away from the fourth link arm 143 may be in contact or may be spaced apart. The present application does not specifically limit the shape of the third supporting connection part 1420 and the shape of the fourth supporting connection part 1430. For example: the third supporting connection part 1420 may be cylindrical, prismatic, etc.; the fourth supporting connection part 1430 may be cylindrical, prismatic, etc. In a possible embodiment, the third supporting connection part 1420 may be cylindrical, and the fourth supporting connection part 1430 may be cylindrical. One end of the third elastic member 105 is sleeved on the third supporting connection part 1420, and the other end is sleeved on the fourth supporting connection part 1430. Among them, the extension direction of the third supporting connection part 1420 can be parallel to the axial direction of the second rotating shaft 140, and the extension direction of the fourth supporting connection part 1430 can be parallel to the axial direction of the second rotating shaft 140, so that the compression direction of the third elastic member 105 with one end sleeved on the third supporting connection part 1420 and the other end sleeved on the fourth supporting connection part 1430 can be parallel to the axial direction of the second rotating shaft 140, so that the third elastic member 105 can squeeze the third connecting arm 142 and the fourth connecting arm 143 along the axial direction of the second rotating shaft 140, thereby improving the movement reliability of the second rotating shaft assembly 104 and increasing the reliability of the torque of the rotating shaft mechanism 10 through the third elastic member 105.

[0064] Since the third link arm 142 is provided with a third supporting connection portion 1420 on the side facing the fourth link arm 143, and the fourth link arm 143 is provided with a fourth supporting connection portion 1430 on the side facing the third link arm 142, one end of the third elastic member 105 is sleeved on the third supporting connection portion 1420, and the other end is sleeved on the fourth supporting connection portion 1430. Therefore, the first supporting connection portion 1220 and the fourth supporting connection portion 1430 can jointly support the third elastic member 105, so that the third elastic member 105 can be stably located in a compressed state between the third link arm 142 and the fourth link arm 143.

[0065] In a possible embodiment, the first elastic member 103 is non-rotatably sleeved on the first supporting connection portion 1220, and / or the first elastic member 103 is non-rotatably sleeved on the second supporting connection portion 1230. Optionally, the first elastic member 103 is interference fit with at least one of the first supporting connection portion 1220 and the second supporting connection portion 1230; or, the first elastic member 103 is fixedly connected with at least one of the first supporting connection portion 1220 and the second supporting connection portion 1230; or, the first elastic member 103 and at least one of the first supporting connection portion 1220 and the second supporting connection portion 1230 are limited in relative rotation by a limiting structure.

[0066] By making the first elastic member 103 non-rotatably sleeved on the first supporting connection part 1220, and / or the first elastic member 103 non-rotatably sleeved on the second supporting connection part 1230, the stability of the first elastic member 103 can be ensured, and the first elastic member 103 can be prevented from rotating relative to the first connecting arm 122 and the second connecting arm 123, thereby improving the reliability of the first elastic member 103 squeezing the first connecting arm 122 and the second connecting arm 123 to increase the friction force generated between the first connecting arm 122, the second connecting arm 123 and the first movable seat 121, thereby improving the effectiveness of increasing the torque of the rotating shaft mechanism 10 through the first elastic member 103.

[0067] The third elastic member 105 is non-rotatably sleeved on the third supporting connection part 1420, and / or, the third elastic member 105 is non-rotatably sleeved on the fourth supporting connection part 1430. Optionally, the third elastic member 105 is interference fit with at least one of the third supporting connection part 1420 and the fourth supporting connection part 1430; or, the third elastic member 105 is fixedly connected with at least one of the third supporting connection part 1420 and the fourth supporting connection part 1430; or, the third elastic member 105 and at least one of the third supporting connection part 1420 and the fourth supporting connection part 1430 are limited in relative rotation by a limiting structure.

[0068] By making the third elastic member 105 non-rotatably mounted on the third supporting connection portion 1420, and / or the third elastic member 105 non-rotatably mounted on the fourth supporting connection portion 1430, the stability of the third elastic member 105 can be ensured, and the third elastic member 105 can be prevented from rotating relative to the third connecting arm 142 and the fourth connecting arm 143, thereby improving the reliability of the third elastic member 105 squeezing the third connecting arm 142 and the fourth connecting arm 143 to increase the friction force generated between the third connecting arm 142, the fourth connecting arm 143 and the second movable seat 141, thereby improving the effectiveness of increasing the torque of the rotating shaft mechanism 10 through the third elastic member 105.

[0069] like Fig.13 As shown, the side of the first link arm 122 facing away from the second link arm 123 includes a first side surface 1221, the first link arm 122 also includes a first top surface 1222 and a first bottom surface 1223 facing opposite to the first top surface 1222, and the first top surface 1222, the first side surface 1221 and the first bottom surface 1223 are connected in sequence. The side of the second link arm 123 facing away from the first link arm 122 includes a second side surface 1231, the second link arm 123 also includes a second top surface 1232 and a second bottom surface 1233 facing opposite to the second top surface 1232, and the second top surface 1232, the second side surface 1231 and the second bottom surface 1233 are connected in sequence. The first movable seat 121 includes a first sliding connection portion 1210 and a second sliding connection portion 1211 that are spaced apart. The first sliding connection portion 1210 includes a first sliding connection surface 121a, a second sliding connection surface 121b and a third sliding connection surface 121c that are connected in sequence. The second sliding connection portion 1211 includes a fourth sliding connection surface 121d, a fifth sliding connection surface 121e, and a sixth sliding connection surface 121f connected in sequence. The first top surface 1222 slides in contact with the first sliding connection surface 121a, the first side surface 1221 slides in contact with the second sliding connection surface 121b, and the first bottom surface 1223 slides in contact with the third sliding connection surface 121c. The second top surface 1232 slides in contact with the fourth sliding connection surface 121d, the second side surface 1231 slides in contact with the fifth sliding connection surface 121e, and the second bottom surface 1233 slides in contact with the sixth sliding connection surface 121f.

[0070] In a possible embodiment, the first top surface 1222, the first side surface 1221 and the first bottom surface 1223 form a first slider. The second top surface 1232, the second side surface 1231 and the second bottom surface 1233 form a second slider. A first slide groove is formed between the first sliding connection surface 121a, the second sliding connection surface 121b and the third sliding connection surface 121c. A second slide groove is formed between the fourth sliding connection surface 121d, the fifth sliding connection surface 121e and the sixth sliding connection surface 121f. The first link arm 122 and the first movable seat 121 are connected to each other by the first slider and the first slide groove. The second link arm 123 and the first movable seat 121 are connected to each other by the second slider and the second slide groove. Of course, in other possible embodiments, the first top surface 1222, the first side surface 1221 and the first bottom surface 1223 can form a slide groove structure, and a slider structure can be formed between the first sliding connection surface 121a, the second sliding connection surface 121b and the third sliding connection surface 121c. The second top surface 1232 , the second side surface 1231 and the second bottom surface 1233 may form a sliding groove structure, and a sliding block structure may be formed between the fourth sliding connection surface 121d , the fifth sliding connection surface 121e and the sixth sliding connection surface 121f .

[0071] By making the first connecting arm 122 include a first top surface 1222, a first side surface 1221 and a first bottom surface 1223 connected in sequence, the first sliding connection part 1210 includes a first sliding connection surface 121a, a second sliding connection surface 121b and a third sliding connection surface 121c connected in sequence, and the first connecting arm 122 and the first movable seat 121 are slidingly connected through the first top surface 1222, the first side surface 1221 and the first bottom surface 1223 respectively cooperating with the first sliding connection surface 121a, the second sliding connection surface 121b and the third sliding connection surface 121c, so as to achieve the limitation between the first connecting arm 122 and the first movable seat 121, avoid the first connecting arm 122 and the first movable seat 121 from being separated, and at the same time, reduce the difficulty of assembling the first connecting arm 122 and the first movable seat 121. By making the second connecting arm 123 include a second top surface 1232, a second side surface 1231 and a second bottom surface 1233 connected in sequence, the second sliding connection part 1211 includes a fourth sliding connection surface 121d, a fifth sliding connection surface 121e and a sixth sliding connection surface 121f connected in sequence, and the second connecting arm 123 and the second movable seat 141 are slidingly connected through the second top surface 1232, the second side surface 1231 and the second bottom surface 1233 respectively cooperating with the fourth sliding connection surface 121d, the fifth sliding connection surface 121e and the sixth sliding connection surface 121f, so as to achieve the limitation between the second connecting arm 123 and the first movable seat 121, avoid the second connecting arm 123 and the first movable seat 121 from being separated, and at the same time, reduce the difficulty of assembling the second connecting arm 123 and the second movable seat 141.

[0072] It can be understood that the first top surface 1222 contacts the first sliding connection surface 121a during the relative sliding between the first link arm 122 and the first movable seat 121, the first side surface 1221 contacts the second sliding connection surface 121b during the relative sliding between the first link arm 122 and the first movable seat 121, and the first bottom surface 1223 contacts the third sliding connection surface 121c during the relative sliding between the first link arm 122 and the first movable seat 121. The second top surface 1232 contacts the fourth sliding connection surface 121d during the relative sliding between the first link arm 122 and the first movable seat 121, the second side surface 1231 contacts the fifth sliding connection surface 121e during the relative sliding between the first link arm 122 and the first movable seat 121, and the second bottom surface 1233 contacts the sixth sliding connection surface 121f during the relative sliding between the first link arm 122 and the first movable seat 121.

[0073] The area of ​​the first top surface 1222 and the area of ​​the first side surface 1221 may be smaller than the area of ​​the first bottom surface 1223. The area of ​​the second top surface 1232 and the area of ​​the second side surface 1231 may be smaller than the area of ​​the second bottom surface 1233. By making the area of ​​the first side surface 1221 smaller than the area of ​​the first bottom surface 1223 and the area of ​​the second side surface 1231 smaller than the area of ​​the second bottom surface 1233, the thickness of the first rotating shaft assembly 102 can be reduced while ensuring the friction between the first connecting rod arm 122, the second connecting rod arm 123 and the first movable seat 121. By making the area of ​​the first top surface 1222 smaller than the area of ​​the first bottom surface 1223, and the area of ​​the second top surface 1232 smaller than the area of ​​the second bottom surface 1233, the difficulty of assembling the first connecting arm 122, the second connecting arm 123 and the second movable seat 141 can be further reduced. At the same time, the possibility of self-locking between the first connecting arm 122, the second connecting arm 123 and the second movable seat 141 can be reduced, thereby improving the sensitivity of the foldable side of the hinge mechanism 10.

[0074] The side of the third link arm 142 facing away from the fourth link arm 143 includes a third side surface 1421, the third link arm 142 also includes a third top surface 1422 and a third bottom surface 1423 facing opposite to the third top surface 1422, and the third top surface 1422, the third side surface 1421 and the third bottom surface 1423 are connected in sequence. The side of the fourth link arm 143 facing away from the third link arm 142 includes a fourth side surface 1432, the fourth link arm 143 also includes a fourth top surface 1431 and a fourth bottom surface 1433 facing opposite to the fourth top surface 1431, and the fourth top surface 1431, the fourth side surface 1432 and the fourth bottom surface 1433 are connected in sequence. The second movable seat 141 includes a third sliding connection part 1410 and a fourth sliding connection part 1411 arranged at intervals. The third sliding connection part 1410 includes a seventh sliding connection surface 141a, an eighth sliding connection surface 141b and a ninth sliding connection surface 141c connected in sequence. The fourth sliding connection portion 1411 includes a tenth sliding connection surface 141d, an eleventh sliding connection surface 141e and a twelfth sliding connection surface 141f connected in sequence. The third top surface 1422 slides in contact with the seventh sliding connection surface 141a, the third side surface 1421 slides in contact with the eighth sliding connection surface 141b, and the third bottom surface 1423 slides in contact with the ninth sliding connection surface 141c. The fourth top surface 1431 slides in contact with the tenth sliding connection surface 141d, the fourth side surface 1432 slides in contact with the eleventh sliding connection surface 141e, and the fourth bottom surface 1433 slides in contact with the twelfth sliding connection surface 141f.

[0075] In a possible implementation, the third top surface 1422, the third side surface 1421 and the third bottom surface 1423 form a third slider. The fourth top surface 1431, the fourth side surface 1432 and the fourth bottom surface 1433 form a fourth slider. A third slide groove is formed between the seventh sliding connection surface 141a, the eighth sliding connection surface 141b and the ninth sliding connection surface 141c. A fourth slide groove is formed between the tenth sliding connection surface 141d, the eleventh sliding connection surface 141e and the twelfth sliding connection surface 141f. The third link arm 142 and the second movable seat 141 are slidably connected by the cooperation of the third slider and the third slide groove. The fourth link arm 143 and the second movable seat 141 are slidably connected by the cooperation of the fourth slider and the fourth slide groove. Of course, in other possible implementations, the third top surface 1422, the third side surface 1421 and the third bottom surface 1423 may form a sliding groove structure, and a slider structure may be formed between the seventh sliding connection surface 141a, the eighth sliding connection surface 141b and the ninth sliding connection surface 141c. The fourth top surface 1431, the fourth side surface 1432 and the fourth bottom surface 1433 may form a sliding groove structure, and a slider structure may be formed between the tenth sliding connection surface 141d, the eleventh sliding connection surface 141e and the twelfth sliding connection surface 141f.

[0076] By making the third connecting arm 142 include a third top surface 1422, a third side surface 1421 and a third bottom surface 1423 connected in sequence, the third sliding connection part 1410 includes a seventh sliding connection surface 141a, an eighth sliding connection surface 141b and a ninth sliding connection surface 141c connected in sequence, and the third connecting arm 142 and the second movable seat 141 are slidingly connected through the third top surface 1422, the third side surface 1421 and the third bottom surface 1423 respectively cooperating with the seventh sliding connection surface 141a, the eighth sliding connection surface 141b and the ninth sliding connection surface 141c, so that the third connecting arm 142 and the second movable seat 141 can be limited, thereby preventing the third connecting arm 142 from being separated from the second movable seat 141, and at the same time, the difficulty of assembling the third connecting arm 142 and the second movable seat 141 can be reduced. By making the fourth connecting arm 143 include a fourth top surface 1431, a fourth side surface 1432 and a fourth bottom surface 1433 connected in sequence, the fourth sliding connection part 1411 includes a tenth sliding connection surface 141d, an eleventh sliding connection surface 141e and a twelfth sliding connection surface 141f connected in sequence, the fourth connecting arm 143 and the second movable seat 141 are slidingly connected through the fourth top surface 1431, the fourth side surface 1432 and the fourth bottom surface 1433 respectively cooperating with the tenth sliding connection surface 141d, the eleventh sliding connection surface 141e and the twelfth sliding connection surface 141f, so that the fourth connecting arm 143 and the second movable seat 141 can be limited, thereby preventing the fourth connecting arm 143 from being separated from the second movable seat 141, and at the same time, the difficulty of assembling the fourth connecting arm 143 and the second movable seat 141 can be reduced.

[0077] It can be understood that the third top surface 1422 contacts the seventh sliding connection surface 141a during the relative sliding between the third link arm 142 and the second movable seat 141, the third side surface 1421 contacts the eighth sliding connection surface 141b during the relative sliding between the third link arm 142 and the second movable seat 141, and the third bottom surface 1423 contacts the ninth sliding connection surface 141c during the relative sliding between the third link arm 142 and the second movable seat 141. The fourth top surface 1431 contacts the tenth sliding connection surface 141d during the relative sliding between the third link arm 142 and the second movable seat 141, the fourth side surface 1432 contacts the eleventh sliding connection surface 141e during the relative sliding between the third link arm 142 and the second movable seat 141, and the fourth bottom surface 1433 contacts the twelfth sliding connection surface 141f during the relative sliding between the third link arm 142 and the second movable seat 141.

[0078] The area of ​​the third top surface 1422 and the area of ​​the third side surface 1421 may be smaller than the area of ​​the third bottom surface 1423. The area of ​​the fourth top surface 1431 and the area of ​​the fourth side surface 1432 may be smaller than the area of ​​the fourth bottom surface 1433. By making the area of ​​the third side surface 1421 smaller than the area of ​​the third bottom surface 1423 and the area of ​​the fourth side surface 1432 smaller than the area of ​​the fourth bottom surface 1433, the thickness of the second rotating shaft assembly 104 can be reduced while ensuring the friction between the third link arm 142, the fourth link arm 143 and the second movable seat 141. By making the area of ​​the third top surface 1422 smaller than the area of ​​the third bottom surface 1423, and the area of ​​the fourth top surface 1431 smaller than the area of ​​the fourth bottom surface 1433, the difficulty of assembling the third link arm 142, the fourth link arm 143 and the second movable seat 141 can be further reduced. At the same time, the possibility of self-locking between the third link arm 142, the fourth link arm 143 and the second movable seat 141 can be reduced, thereby improving the foldability of the other side of the hinge mechanism 10.

[0079] For further information, please refer to Fig.14 and Fig.15, the rotating shaft mechanism 10 also includes a torsion assembly 106. Specifically, the torsion assembly 106 includes an extrusion member 161 and a second elastic member 162. The extrusion member 161 squeezes the second elastic member 162 to compress the second elastic member 162, which can generate a certain torque. In the present application, the extrusion member 161 is located on the side of the first connecting arm 122 away from the second connecting arm 123, and is cam-matched with the first connecting arm 122. It can be understood that the extrusion member 161, the first connecting arm 122 and the second connecting arm 123 are arranged in sequence. In a possible embodiment, the extrusion member 161 has a first cam portion 1610, the first connecting arm 122 has a second cam portion 1224, and the first cam portion 1610 contacts the second cam portion 1224 so that the extrusion member 161 is cam-matched with the first connecting arm 122. The extrusion member 161 is used to squeeze the second elastic member 162 during the rotation of the first connecting arm 122 relative to the base 101. The second elastic member 162 is located between the side of the extrusion member 161 away from the first link arm 122 and the base 101, and the second elastic member 162 is sleeved on the first rotating shaft 120. The second elastic member 162 is used to deform along the axial direction of the first rotating shaft 120 under the extrusion of the extrusion member 161. It can be understood that during the rotation of the first link arm 122 relative to the base 101, the extrusion member 161 moves along the axial direction of the first rotating shaft 120, and the second elastic member 162 is compressed.

[0080] By making the torsion assembly 106 include an extrusion member 161 and a second elastic member 162, and the extrusion member 161 cooperates with the cam of the first link arm 122, the suspension of one side of the rotating shaft mechanism 10 can be achieved. The extrusion member 161 cooperates with the cam of the first link arm 122, and the first link arm 122 can be used to drive the extrusion member 161 to move, so as to squeeze the second elastic member 162. In addition, the second elastic member 162 is located between the extrusion member 161 and the base 101, and is sleeved on the first rotating shaft 120, that is, the first rotating shaft 120 is used to carry the second elastic member 162, and the base 101 is used to limit the sliding of the second elastic member 162. At the same time, the first rotating shaft 120 can also serve as a guide structure for the deformation of the second elastic member 162, so that the elastic force of the second elastic member 162 can be converted into the torque of the rotating shaft mechanism 10 to improve the suspension effect of the rotating shaft mechanism 10.

[0081] The torsion assembly 106 further includes a fourth elastic member 163. The extrusion member 161 squeezes the fourth elastic member 163, compressing the fourth elastic member 163, and generating a certain torsion. In the present application, the extrusion member 161 is also located on the side of the third link arm 142 away from the fourth link arm 143, and the third link arm 142 is cam-matched. It can be understood that the extrusion member 161, the third link arm 142 and the fourth link arm 143 are arranged in sequence. In a possible embodiment, the extrusion member 161 also has a third cam portion 1611, and the third link arm 142 has a fourth cam portion 1424, and the third cam portion 1611 contacts the fourth cam portion 1424, so that the extrusion member 161 and the third link arm 142 are cam-matched. The extrusion member 161 is used to squeeze the fourth elastic member 163 during the rotation of the third link arm 142 relative to the base 101. The fourth elastic member 163 is located between the side of the extrusion member 161 away from the third link arm 142 and the base 101, and the fourth elastic member 163 is sleeved on the second rotating shaft 140. The fourth elastic member 163 is used to deform along the axial direction of the second rotating shaft 140 under the extrusion of the extrusion member 161. It can be understood that during the rotation of the third link arm 142 relative to the base 101, the extrusion member 161 moves along the axial direction of the second rotating shaft 140, and the fourth elastic member 163 is compressed.

[0082] By making the torsion assembly 106 further include the fourth elastic member 163, the extrusion member 161 cooperates with the cam of the third link arm 142, so that the other side of the rotating shaft mechanism 10 can be suspended. The extrusion member 161 cooperates with the cam of the third link arm 142, and the third link arm 142 can be used to drive the extrusion member 161 to move, so as to squeeze the fourth elastic member 163. In addition, the fourth elastic member 163 is located between the extrusion member 161 and the base 101, and is sleeved on the second rotating shaft 140, that is, the second rotating shaft 140 is used to carry the fourth elastic member 163, and the base 101 is used to limit the sliding of the fourth elastic member 163. At the same time, the second rotating shaft 140 can also serve as a guide structure for the deformation of the fourth elastic member 163, so that the elastic force of the fourth elastic member 163 can be converted into the torsion of the rotating shaft mechanism 10 to improve the suspension effect of the rotating shaft mechanism 10.

[0083] In the process of the first link arm 122 rotating from the flattened state to the folded state relative to the base 101, the extrusion force of the extrusion member 161 on the second elastic member 162 first gradually increases and then gradually decreases. Since the extrusion force of the extrusion member 161 on the second elastic member 162 first gradually increases and then gradually decreases during the process of the first link arm 122 rotating from the flattened state to the folded state relative to the base 101, the movement amount of the extrusion member 161 in the rotating shaft mechanism 10 of the present application is large, so that the deformation amount of the second elastic member 162 is large, and the torsion force generated by the torsion assembly 106 is also large, which can ensure the hovering design of the rotating shaft mechanism 10. Of course, in other possible embodiments, during the process of the first link arm 122 rotating from the flattened state to the folded state relative to the base 101, the extrusion force of the extrusion member 161 on the second elastic member 162 can also have other changing states.

[0084] In a possible implementation, the first cam portion 1610 may include a plurality of first convex portions and a plurality of first concave portions. The first convex portion is disposed adjacent to the first concave portion. For example, the first cam portion 1610 may include two first convex portions and two first concave portions; or, the first cam portion 1610 may include three first convex portions and three first concave portions. The second cam portion 1224 may include a plurality of second convex portions and a plurality of second concave portions. The second convex portion is disposed adjacent to the second concave portion. For example, the second cam portion 1224 may include two second convex portions and two second concave portions; or, the second cam portion 1224 may include three second convex portions and three second concave portions. When the rotating shaft mechanism 10 is in a flattened state, the first convex portion cooperates with the second concave portion, and the first concave portion cooperates with the second convex portion. When the rotating shaft mechanism 10 is in a folded state, the first convex portion cooperates with the second concave portion, and the first concave portion cooperates with the second convex portion. When the rotating shaft mechanism 10 is in a suspended state, the first convex portion cooperates with the second convex portion, and the first concave portion cooperates with the second concave portion. This embodiment can achieve that when the first link arm 122 rotates from the flattened state to the folded state relative to the base 101 , the extrusion force of the extrusion member 161 on the second elastic member 162 first gradually increases and then gradually decreases.

[0085] In the process of the third link arm 142 rotating from the flattened state to the folded state relative to the base 101, the extrusion force of the extrusion member 161 on the fourth elastic member 163 first gradually increases and then gradually decreases. Since the extrusion force of the extrusion member 161 on the fourth elastic member 163 first gradually increases and then gradually decreases during the process of the third link arm 142 rotating from the flattened state to the folded state relative to the base 101, the movement amount of the extrusion member 161 in the rotating shaft mechanism 10 of the present application is large, so that the deformation amount of the fourth elastic member 163 is large, and the torsion force generated by the torsion assembly 106 is also large, which can ensure the hovering design of the rotating shaft mechanism 10. Of course, in other possible embodiments, during the process of the third link arm 142 rotating from the flattened state to the folded state relative to the base 101, the extrusion force of the extrusion member 161 on the fourth elastic member 163 can also have other changing states.

[0086] In a possible implementation, the third cam portion 1611 may include a plurality of third protrusions and a plurality of third recesses. The third protrusion is arranged adjacent to the third recess. For example, the third cam portion 1611 may include two third protrusions and two third recesses; or, the third cam portion 1611 may include three third protrusions and three third recesses. The fourth cam portion 1424 may include a plurality of fourth protrusions and a plurality of fourth recesses. The fourth protrusion is arranged adjacent to the fourth recess. For example, the fourth cam portion 1424 may include two fourth protrusions and two fourth recesses; or, the fourth cam portion 1424 may include three fourth protrusions and three fourth recesses. When the rotating shaft mechanism 10 is in the flattened state, the third protrusion cooperates with the fourth recess, and the third recess cooperates with the fourth protrusion. When the rotating shaft mechanism 10 is in the folded state, the third protrusion cooperates with the fourth recess, and the third recess cooperates with the fourth protrusion. When the rotating shaft mechanism 10 is in the suspended state, the third protrusion cooperates with the fourth protrusion, and the third recess cooperates with the fourth recess. This embodiment can achieve that when the third link arm 142 rotates from the flattened state to the folded state relative to the base 101 , the extrusion force of the extrusion member 161 on the fourth elastic member 163 first gradually increases and then gradually decreases.

[0087] In a possible embodiment, the extrusion force of the first elastic member 103 on the first link arm 122 and the extrusion force of the first elastic member 103 on the second link arm 123 are greater than the elastic force of the second elastic member 162. It can be understood that for the first elastic member 103 and the second elastic member 162 with the same elastic coefficient, the compression amount of the first elastic member 103 is greater than the compression amount of the second elastic member 162; for the elastic coefficient of the first elastic member 103 is less than the elastic coefficient of the second elastic member 162, the compression amount of the first elastic member 103 is greater than the compression amount of the second elastic member 162; for the elastic coefficient of the first elastic member 103 is greater than the elastic coefficient of the second elastic member 162, the compression amount of the first elastic member 103 can be greater than or less than the compression amount of the second elastic member 162. Since the extrusion pressure of the first elastic member 103 on the first connecting arm 122 and the extrusion pressure of the first elastic member 103 on the second connecting arm 123 remain basically unchanged during the folding process of the rotating shaft mechanism 10, while the elastic force of the second elastic member 162 is always changing, the extrusion pressure of the first elastic member 103 on the first connecting arm 122 and the extrusion pressure of the first elastic member 103 on the second connecting arm 123 are greater than the elastic force of the second elastic member 162. The extrusion pressure of the first elastic member 103 on the first connecting arm 122 and the extrusion pressure of the first elastic member 103 on the second connecting arm 123 can be greater than the maximum elastic force of the second elastic member 162, or the extrusion pressure of the first elastic member 103 on the first connecting arm 122 and the extrusion pressure of the first elastic member 103 on the second connecting arm 123 are greater than the elastic force of the second elastic member 162 in some states.

[0088] By making the squeezing force of the first elastic member 103 on the first connecting arm 122 and the squeezing force of the first elastic member 103 on the second connecting arm 123 greater than the elastic force of the second elastic member 162, the side of the first connecting arm 122 away from the second connecting arm 123 and the first movable seat 121 can always be in a stressed and squeezed state, and the side of the second connecting arm 123 away from the first connecting arm 122 and the first movable seat 121 can always be in a stressed and squeezed state, thereby greatly improving the friction between the first connecting arm 122 and the first movable seat 121 and between the second connecting arm 123 and the first movable seat 121.

[0089] In a possible embodiment, the squeezing force of the third elastic member 105 on the third link arm 142 and the squeezing force of the third elastic member 105 on the fourth link arm 143 are greater than the elastic force of the fourth elastic member 163. It can be understood that, for the third elastic member 105 and the fourth elastic member 163 with the same elastic coefficient, the compression amount of the third elastic member 105 is greater than the compression amount of the fourth elastic member 163; for the elastic coefficient of the third elastic member 105 is less than the elastic coefficient of the fourth elastic member 163, the compression amount of the third elastic member 105 is greater than the compression amount of the fourth elastic member 163; for the elastic coefficient of the third elastic member 105 is greater than the elastic coefficient of the fourth elastic member 163, the compression amount of the third elastic member 105 can be greater than or less than the compression amount of the fourth elastic member 163. Since the squeezing pressure of the third elastic member 105 on the third connecting arm 142 and the squeezing pressure of the third elastic member 105 on the fourth connecting arm 143 remain basically unchanged during the folding process of the rotating shaft mechanism 10, while the elastic force of the fourth elastic member 163 is always changing, the squeezing pressure of the third elastic member 105 on the third connecting arm 142 and the squeezing pressure of the third elastic member 105 on the fourth connecting arm 143 are greater than the elastic force of the fourth elastic member 163. The squeezing pressure of the third elastic member 105 on the third connecting arm 142 and the squeezing pressure of the third elastic member 105 on the fourth connecting arm 143 can be greater than the maximum elastic force of the fourth elastic member 163, or the squeezing pressure of the third elastic member 105 on the third connecting arm 142 and the squeezing pressure of the third elastic member 105 on the fourth connecting arm 143 are greater than the elastic force of the fourth elastic member 163 in some states.

[0090] By making the squeezing force of the third elastic member 105 on the third link arm 142 and the squeezing force of the third elastic member 105 on the fourth link arm 143 greater than the elastic force of the fourth elastic member 163, the side of the third link arm 142 facing away from the fourth link arm 143 and the second movable seat 141 can always be in a stressed and squeezed state, and the side of the fourth link arm 143 facing away from the third link arm 142 and the second movable seat 141 can always be in a stressed and squeezed state, thereby greatly improving the friction between the third link arm 142 and the second movable seat 141 and between the fourth link arm 143 and the second movable seat 141.

[0091] like Fig.16As shown, the base 101 includes a first limiting portion 110 and a second limiting portion 111 arranged at intervals. The first link arm 122 includes a first rotating connection portion 1225 and a second rotating connection portion 1226 arranged at intervals. The first rotating connection portion 1225 and the second rotating connection portion 1226 are both rotatably connected to the base 101 through the first rotating shaft 120. The first rotating connection portion 1225 is located on a side of the first limiting portion 110 away from the second limiting portion 111 and contacts the first limiting portion 110, and the second rotating connection portion 1226 is located on a side of the first limiting portion 110 facing the second limiting portion 111 and contacts the first limiting portion 110. The second link arm 123 includes a third rotating connection portion 1234. The third rotating connection portion 1234 is located on a side of the second limiting portion 111 facing the first limiting portion 110 and contacts the second limiting portion 111.

[0092] It can be understood that the first rotation connection portion 1225 , the first limiting portion 110 , the second rotation connection portion 1226 , the third rotation connection portion 1234 and the second limiting portion 111 are arranged in sequence.

[0093] By making the base 101 include a first limiting portion 110, the first connecting arm 122 includes a first rotating connection portion 1225 and a second rotating connection portion 1226 that are spaced apart, the first rotating connection portion 1225 and the second rotating connection portion 1226 are both rotationally connected to the base 101 through the first rotating shaft 120, the first rotating connection portion 1225 is located on the side of the first limiting portion 110 away from the second limiting portion 111 and contacts the first limiting portion 110, and the second rotating connection portion 1226 is located on the side of the first limiting portion 110 toward the second limiting portion 111 and contacts the first limiting portion 110, the axial sliding of the first connecting arm 122 along the first rotating shaft 120 can be further limited, thereby improving the reliability of the first connecting arm 122 being rotationally connected to the base 101 through the first rotating shaft 120. By making the base 101 include the second limit portion 111, the second link arm 123 includes the third rotation connection portion 1234, and the third rotation connection portion 1234 is located on the side of the second limit portion 111 facing the first limit portion 110 and contacts the second limit portion 111, the axial sliding of the second link arm 123 along the first rotation shaft 120 can be further limited, thereby improving the reliability of the second link arm 123 being rotationally connected to the base 101 through the first rotation shaft 120. In addition, limiting the axial sliding of the first link arm 122 and the second link arm 123 along the first rotation shaft 120 can ensure that the distance between the first link arm 122 and the second link arm 123 remains unchanged, thereby improving the reliability of the first elastic member 103 being between the first link arm 122 and the second link arm 123 in a compressed state.

[0094] The base 101 further includes a third limiting portion 113 and a fourth limiting portion 114 which are spaced apart. The third link arm 142 includes a fourth rotation connection portion 1425 and a fifth rotation connection portion 1426 which are spaced apart. The fourth rotation connection portion 1425 and the fifth rotation connection portion 1426 are both rotationally connected to the base 101 through the second rotating shaft 140. The fourth rotation connection portion 1425 is located on a side of the third limiting portion 113 which is away from the fourth limiting portion 114 and contacts the third limiting portion 113, and the fifth rotation connection portion 1426 is located on a side of the third limiting portion 113 which faces the fourth limiting portion 114 and contacts the third limiting portion 113. The fourth link arm 143 includes a sixth rotation connection portion 1434. The sixth rotation connection portion 1434 is located on a side of the fourth limiting portion 114 which faces the third limiting portion 113 and contacts the fourth limiting portion 114.

[0095] It can be understood that the fourth rotation connection portion 1425 , the third limiting portion 113 , the fifth rotation connection portion 1426 , the sixth rotation connection portion 1434 and the fourth limiting portion 114 are arranged in sequence.

[0096] By making the base 101 include a third limiting portion 113, the third connecting arm 142 includes a fourth rotating connection portion 1425 and a fifth rotating connection portion 1426 that are spaced apart, the fourth rotating connection portion 1425 and the fifth rotating connection portion 1426 are both rotationally connected to the base 101 through the second rotating shaft 140, the fourth rotating connection portion 1425 is located on the side of the third limiting portion 113 that is away from the fourth limiting portion 114 and contacts the third limiting portion 113, and the fifth rotating connection portion 1426 is located on the side of the third limiting portion 113 that is toward the fourth limiting portion 114 and contacts the third limiting portion 113, the axial sliding of the third connecting arm 142 along the second rotating shaft 140 can be further limited, thereby improving the reliability of the third connecting arm 142 being rotationally connected to the base 101 through the second rotating shaft 140. By making the base 101 include the fourth limit portion 114, the fourth link arm 143 includes the sixth rotation connection portion 1434, and the sixth rotation connection portion 1434 is located on the side of the fourth limit portion 114 facing the third limit portion 113 and contacts the fourth limit portion 114, the axial sliding of the fourth link arm 143 along the second rotation shaft 140 can be further limited, thereby improving the reliability of the fourth link arm 143 being rotationally connected to the base 101 through the second rotation shaft 140. In addition, limiting the axial sliding of the third link arm 142 and the fourth link arm 143 along the second rotation shaft 140 can ensure that the distance between the third link arm 142 and the fourth link arm 143 remains unchanged, thereby improving the reliability of the third elastic member 105 being between the third link arm 142 and the fourth link arm 143 in a compressed state.

[0097] For further information, please refer to Fig.17 and Fig.18The first rotating shaft assembly 102 further includes a first rotating arm 124 and a first rotating connecting member 125. The first rotating arm 124 is rotatably connected to the base 101. The first rotating connecting member 125 is fixedly connected to one of the first rotating arm 124 and the first movable seat 121, and the first rotating connecting member 125 has a first arc groove 1250. The other of the first rotating arm 124 and the first movable seat 121 includes a first arc block 1240. The first arc groove 1250 is wrapped outside the first arc block 1240, and the first arc groove 1250 and the first arc block 1240 can rotate relative to each other.

[0098] It can be understood that the first rotating arm 124 is rotatably connected to the base 101, and the first rotating arm 124 is rotatably connected to the first movable seat 121 through the cooperation of the first arc groove 1250 and the first arc block 1240. The base 101, the first connecting rod arm 122, the second connecting rod arm 123, the first movable seat 121 and the first rotating arm 124 of the rotating shaft mechanism 10 of the present application form a crank slider mechanism, which can realize that the flexible display screen 200 is in a teardrop shape when in a folded state, and at the same time, the length change of the rotating shaft mechanism 10 can adapt to the length change of the flexible display screen 200, thereby avoiding stretching or squeezing the flexible display screen 200 during the bending process of the rotating shaft mechanism 10.

[0099] Optionally, the first rotating connector 125 is fixedly connected to the first movable seat 121, and the first rotating arm 124 includes a first arc block 1240; or, the first rotating connector 125 is fixedly connected to the first rotating arm 124, and the first movable seat 121 includes a first arc block 1240. The first rotating connector 125 and one of the first rotating arm 124 and the first movable seat 121 can be connected in an integral manner, or can be detachably or non-detachably separated. In other words, the first rotating connector 125 and one of the first rotating arm 124 and the first movable seat 121 can be integrally formed, or can be separately formed and then connected together. The arc angle of the first arc groove 1250 can be greater than or equal to 180°. The arc angle of the first arc block 1240 can be greater than or equal to 180°.

[0100] By wrapping the first arc groove 1250 around the first arc block 1240, relative rotation can occur between the first arc groove 1250 and the first arc block 1240. While the first rotating arm 124 is rotatably connected to the first movable seat 121, since the force between the first rotating connector 125 and the other of the first rotating arm 124 and the first movable seat 121 is mainly extrusion force, and shear force is less (in the technical solution of connection by pins, the main force of the pins is shear force), the reliability of the rotational connection between the first rotating arm 124 and the first movable seat 121 is increased, and the impact resistance of the rotating shaft mechanism 10 is enhanced.

[0101] The second rotating shaft assembly 104 further includes a second rotating arm 144 and a second rotating connecting member 145. The second rotating arm 144 is rotatably connected to the base 101. The second rotating connecting member 145 is fixedly connected to one of the second rotating arm 144 and the second movable seat 141, and the second rotating connecting member 145 has a third circular arc groove 1450. The other of the second rotating arm 144 and the second movable seat 141 includes a third circular arc block 1440. The third circular arc groove 1450 is wrapped outside the third circular arc block 1440, and the third circular arc groove 1450 and the third circular arc block 1440 can rotate relative to each other.

[0102] It can be understood that the second rotating arm 144 is rotatably connected to the base 101, and the second rotating arm 144 is rotatably connected to the second movable seat 141 through the cooperation of the third arc groove 1450 and the third arc block 1440. The base 101, the third connecting rod arm 142, the fourth connecting rod arm 143, the second movable seat 141 and the second rotating arm 144 of the rotating shaft mechanism 10 of the present application form a crank slider mechanism, which can realize that the flexible display screen 200 is in a teardrop shape when in a folded state, and at the same time, the length change of the rotating shaft mechanism 10 can adapt to the length change of the flexible display screen 200, thereby avoiding stretching or squeezing the flexible display screen 200 during the bending process of the rotating shaft mechanism 10.

[0103] Optionally, the second rotating connector 145 is fixedly connected to the second movable seat 141, and the second rotating arm 144 includes a third arc block 1440; or, the second rotating connector 145 is fixedly connected to the second rotating arm 144, and the second movable seat 141 includes a third arc block 1440. The second rotating connector 145 and one of the second rotating arm 144 and the second movable seat 141 can be connected in an integral manner, or can be detachably or non-detachably separated. In other words, the second rotating connector 145 and one of the second rotating arm 144 and the second movable seat 141 can be integrally formed, or can be separately formed and then connected together. The arc angle of the third arc groove 1450 can be greater than or equal to 180°. The arc angle of the third arc block 1440 can be greater than or equal to 180°.

[0104] By wrapping the third arc groove 1450 outside the third arc block 1440, relative rotation can occur between the third arc groove 1450 and the third arc block 1440, and while the second rotating arm 144 is rotatably connected to the second movable seat 141, since the force between the second rotating connector 145 and the second rotating arm 144 and the other of the second movable seat 141 is mainly extrusion force with less shear force during the process of falling, collision, etc. of the rotating shaft mechanism 10, the reliability of the rotation connection between the second rotating arm 144 and the second movable seat 141 is increased, and the impact resistance of the rotating shaft mechanism 10 is enhanced.

[0105] In a possible embodiment, the first rotating connector 125 is integrally formed with one of the first rotating arm 124 and the first movable seat 121. By integrally forming the first rotating connector 125 with one of the first rotating arm 124 and the first movable seat 121, the reliability of the fixed connection between the first rotating connector 125 and one of the first rotating arm 124 and the first movable seat 121 can be improved, thereby further increasing the reliability of the rotating connection between the first rotating arm 124 and the first movable seat 121, and enhancing the impact resistance of the rotating shaft mechanism 10.

[0106] At least one of the first rotating connector 125 and the first arc block 1240 is elastic. Optionally, the first rotating connector 125 is elastic; or the first arc groove 1250 of the first rotating connector 125 is elastic; or the other of the first rotating arm 124 and the first movable seat 121 is elastic; or the first arc block 1240 is elastic. Among them, the elasticity of at least one of the first rotating connector 125 and the first arc block 1240 can be that the material of at least one of the first rotating connector 125 and the first arc block 1240 is an elastic material; or at least one of the first rotating connector 125 and the first arc block 1240 includes a deformable elastic part. By making at least one of the first rotating connector 125 and the first arc block 1240 elastic, a buffer can be generated during the process of falling, collision, etc. of the rotating shaft mechanism 10, and the impact resistance of the rotating shaft mechanism 10 is further enhanced.

[0107] The second rotating connector 145 is integrally formed with one of the second rotating arm 144 and the second movable seat 141. By integrally forming the second rotating connector 145 with one of the second rotating arm 144 and the second movable seat 141, the reliability of the fixed connection between the second rotating connector 145 and one of the second rotating arm 144 and the second movable seat 141 can be improved, thereby further increasing the reliability of the rotating connection between the second rotating arm 144 and the second movable seat 141 and enhancing the impact resistance of the rotating shaft mechanism 10.

[0108] At least one of the second rotating connector 145 and the third arc block 1440 is elastic. Optionally, the second rotating connector 145 is elastic; or, the third arc groove 1450 of the second rotating connector 145 is elastic; or, the other of the second rotating arm 144 and the second movable seat 141 is elastic; or, the third arc block 1440 is elastic. Among them, the elasticity of at least one of the second rotating connector 145 and the third arc block 1440 can be that the material of at least one of the second rotating connector 145 and the third arc block 1440 is an elastic material; or, at least one of the second rotating connector 145 and the third arc block 1440 includes a deformable elastic part. By making at least one of the second rotating connector 145 and the third arc block 1440 elastic, a buffer can be generated during the process of falling, collision, etc. of the rotating shaft mechanism 10, and the impact resistance of the rotating shaft mechanism 10 is further enhanced.

[0109] like Fig.19 As shown, one of the first rotating arm 124 and the base 101 includes a second arc groove 115, and the other of the first rotating arm 124 and the base 101 includes a second arc block 1241. The first rotating arm 124 and the base 101 are rotatably connected through the second arc groove 115 and the second arc block 1241.

[0110] Optionally, the base 101 includes the second arc groove 115, and the first rotating arm 124 includes the second arc block 1241; or, the first rotating arm 124 includes the second arc groove 115, and the base 101 includes the second arc block 1241. When the first rotating arm 124 rotates relative to the base 101, the second arc block 1241 moves in accordance with the second arc groove 115.

[0111] Since the first rotating arm 124 is connected to the base 101 by the second circular arc groove 115 and the second circular arc block 1241, it is helpful to design the curvature radius of the second circular arc groove 115 and the second circular arc block 1241, thereby designing the rotation center of the first rotating arm 124, so that the first rotating arm 124 can move according to the required trajectory. In addition, the first rotating arm 124 is connected to the base 101 by the second circular arc groove 115 and the second circular arc block 1241, which can also improve the reliability of the rotation connection between the first rotating arm 124 and the base 101.

[0112] One of the second rotating arm 144 and the base 101 includes a fourth arc groove 116, and the other of the second rotating arm 144 and the base 101 includes a fourth arc block 1441. The second rotating arm 144 and the base 101 are rotatably connected through the fourth arc groove 116 and the fourth arc block 1441.

[0113] Optionally, the base 101 includes the fourth arc groove 116, and the second rotating arm 144 includes the fourth arc block 1441; or, the second rotating arm 144 includes the fourth arc groove 116, and the base 101 includes the fourth arc block 1441. When the second rotating arm 144 rotates relative to the base 101, the fourth arc block 1441 moves in accordance with the fourth arc groove 116.

[0114] Since the second rotating arm 144 is connected to the base 101 by the fourth arc groove 116 and the fourth arc block 1441, it is helpful to design the curvature radius of the fourth arc groove 116 and the fourth arc block 1441, thereby designing the rotation center of the second rotating arm 144, so that the second rotating arm 144 can move according to the required trajectory. In addition, the second rotating arm 144 is connected to the base 101 by the fourth arc groove 116 and the fourth arc block 1441, which can also improve the reliability of the rotation connection between the second rotating arm 144 and the base 101.

[0115] For further information, please refer to Figure 20 to Figure 22 The shaft mechanism 10 further includes a synchronizer 107 disposed between the first link arm 122, the second link arm 123, the third link arm 142 and the fourth link arm 143. The synchronizer 107 includes a first helical surface 171, a second helical surface 172, a third helical surface 173 and a fourth helical surface 174. The first helical surface 171 is disposed opposite to the second helical surface 172, and contacts and cooperates with the first link arm 122 and the second link arm 123 respectively. The third helical surface 173 is disposed opposite to the fourth helical surface 174, and contacts and cooperates with the third link arm 142 and the fourth link arm 143 respectively. The synchronizer 107 is used to drive the first link arm 122, the second link arm 123, the third link arm 142 and the fourth link arm 143 to rotate synchronously relative to the base 101.

[0116] It can be understood that in the embodiment of the present application, when the first link arm 122 and the second link arm 123 rotate relative to the base 101, the synchronizer 107 can drive the third link arm 142 and the fourth link arm 143 to rotate synchronously and in the opposite direction relative to the base 101. When the third link arm 142 and the fourth link arm 143 rotate relative to the base 101, the synchronizer 107 can drive the first link arm 122 and the second link arm 123 to rotate synchronously and in the opposite direction relative to the base 101. Among them, the orientation of the first spiral surface 171 is opposite to the orientation of the second spiral surface 172. The orientation of the third spiral surface 173 is opposite to the orientation of the fourth spiral surface 174. In a possible embodiment, part of the synchronizer 107 can be sleeved on the first rotating shaft 120, and another part of the synchronizer 107 can be sleeved on the second rotating shaft 140. The part of the synchronizer 107 sleeved on the first rotating shaft 120 can be located between the second rotating connection part 1226 of the first connecting arm 122 and the third rotating connection part 1234 of the second connecting arm 123, and the other part of the synchronizer 107 sleeved on the second rotating shaft 140 can be located between the fifth rotating connection part 1426 of the third connecting arm 142 and the sixth rotating connection part 1434 of the fourth connecting arm 143, thereby improving the stability of the synchronizer 107 and limiting the relative sliding between the first connecting arm 122 and the second connecting arm 123 through the synchronizer 107, so as to indirectly improve the reliability of the first elastic member 103 in a compressed state between the first connecting arm 122 and the second connecting arm 123.

[0117] The synchronous member 107 can realize the synchronous rotation of the first rotating shaft assembly 102 and the first rotating shaft assembly 102 relative to the base 101. The synchronous member 107 includes a first spiral surface 171, a second spiral surface 172, a third spiral surface 173 and a fourth spiral surface 174. The first spiral surface 171 and the second spiral surface 172 are arranged opposite to each other, and are respectively in contact with the first link arm 122 and the second link arm 123. The third spiral surface 173 and the fourth spiral surface 174 are arranged opposite to each other, and are respectively in contact with the third link arm 142 and the fourth link arm 143, which can reduce the structural design difficulty of the synchronous member 107, reduce the size of the synchronous member 107, and improve the structure of the rotating shaft mechanism 10 to be more compact, thereby facilitating the lightweight design of the foldable electronic device 1000. In addition, the synchronization member 107 provided between the first link arm 122, the second link arm 123, the third link arm 142 and the fourth link arm 143 can further limit the axial sliding of the first link arm 122 and the second link arm 123 along the first rotating shaft 120, thereby improving the reliability of the first elastic member 103 in a compressed state between the first link arm 122 and the second link arm 123, and limit the axial sliding of the third link arm 142 and the fourth link arm 143 along the second rotating shaft 140, thereby improving the reliability of the third elastic member 105 in a compressed state between the third link arm 142 and the fourth link arm 143.

[0118] The features mentioned in the specification, claims and drawings can be combined with each other as long as they are meaningful within the scope of the present application. The advantages and features described for the hinge mechanism 10 are applicable to the foldable housing 100 and the foldable electronic device 1000 in a corresponding manner.

[0119] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present application, and these improvements and modifications are also regarded as the scope of protection of the present application.

Claims

1. A rotating shaft mechanism, characterized in that: include: Pedestal; A first rotating shaft assembly includes a first rotating shaft, a first movable seat, a first connecting arm and a second connecting arm, wherein the first movable seat is arranged at one side of the base, the first connecting arm and the second connecting arm are arranged between the base and the first movable seat and are spaced apart, the first connecting arm is rotatably connected to the base via the first rotating shaft, and the first connecting arm is slidably connected to the first movable seat, a side of the first connecting arm away from the second connecting arm is in sliding contact with the first movable seat, the second connecting arm is rotatably connected to the base via the first rotating shaft, and the second connecting arm is slidably connected to the first movable seat, and a side of the second connecting arm away from the first connecting arm is in sliding contact with the first movable seat; and The first elastic member is interposed between the first link arm and the second link arm in a compressed state, and is used for pressing the first link arm toward a side away from the second link arm, and pressing the second link arm toward a side away from the first link arm.

2. The rotating shaft mechanism according to claim 1, characterized in that: A first supporting connection portion is provided on the side of the first connecting arm facing the second connecting arm, a second supporting connection portion is provided on the side of the second connecting arm facing the first connecting arm, one end of the first elastic member is sleeved on the first supporting connection portion, and the other end is sleeved on the second supporting connection portion.

3. The rotating shaft mechanism according to claim 2, characterized in that: The first elastic member is non-rotatably sleeved on the first supporting connection portion, and / or the first elastic member is non-rotatably sleeved on the second supporting connection portion.

4. The rotating shaft mechanism according to claim 1, characterized in that: The side of the first connecting arm facing away from the second connecting arm includes a first side surface, the first connecting arm also includes a first top surface and a first bottom surface opposite to the first top surface, the first top surface, the first side surface and the first bottom surface are connected in sequence, the side of the second connecting arm facing away from the first connecting arm includes a second side surface, the second connecting arm also includes a second top surface and a second bottom surface opposite to the second top surface, the second top surface, the second side surface and the second bottom surface are connected in sequence, the first movable seat includes a first sliding connection part and a second sliding connection part arranged at intervals, the first sliding connection part includes a first sliding connection surface, a second sliding connection surface and a third sliding connection surface connected in sequence, the second sliding connection part includes a fourth sliding connection surface, a fifth sliding connection surface and a sixth sliding connection surface connected in sequence, the first top surface slidably contacts the first sliding connection surface, the first side surface slidably contacts the second sliding connection surface, the first bottom surface slidably contacts the third sliding connection surface, the second top surface slidably contacts the fourth sliding connection surface, the second side surface slidably contacts the fifth sliding connection surface, and the second bottom surface slidably contacts the sixth sliding connection surface.

5. The rotating shaft mechanism according to claim 1, characterized in that: The rotating shaft mechanism also includes a torsion assembly, which includes an extrusion piece and a second elastic piece. The extrusion piece is located on a side of the first connecting arm away from the second connecting arm and cooperates with the first connecting arm cam. The extrusion piece is used to extrude the second elastic piece during the rotation of the first connecting arm relative to the base. The second elastic piece is located between the side of the extrusion piece away from the first connecting arm and the base, and the second elastic piece is sleeved on the first rotating shaft. The second elastic piece is used to deform along the axial direction of the first rotating shaft under the extrusion of the extrusion piece.

6. The rotating shaft mechanism according to claim 5, characterized in that: During the process of the first link arm rotating from the flattened state to the folded state relative to the base, the extrusion force of the extrusion member on the second elastic member first gradually increases and then gradually decreases.

7. The rotating shaft mechanism according to claim 5, characterized in that: The extrusion force of the first elastic member on the first connecting rod arm and the extrusion force of the first elastic member on the second connecting rod arm are greater than the elastic force of the second elastic member.

8. The rotating shaft mechanism according to claim 1, characterized in that: The base includes a first limiting portion and a second limiting portion arranged at intervals, the first connecting arm includes a first rotating connection portion and a second rotating connection portion arranged at intervals, the first rotating connection portion and the second rotating connection portion are both rotatably connected to the base via the first rotating shaft, the first rotating connection portion is located on a side of the first limiting portion away from the second limiting portion and contacts the first limiting portion, the second rotating connection portion is located on a side of the first limiting portion facing the second limiting portion and contacts the first limiting portion, the second connecting arm includes a third rotating connection portion, the third rotating connection portion is located on a side of the second limiting portion facing the first limiting portion and contacts the second limiting portion.

9. The rotating shaft mechanism according to any one of claims 1 to 8, characterized in that: The first rotating shaft assembly also includes a first rotating arm and a first rotating connecting piece, the first rotating arm is rotatably connected to the base, the first rotating connecting piece is fixedly connected to the first rotating arm and one of the first movable seats, the first rotating connecting piece has a first arc groove, the other of the first rotating arm and the first movable seat includes a first arc block, the first arc groove is wrapped outside the first arc block, and the first arc groove and the first arc block can rotate relative to each other.

10. The rotating shaft mechanism according to claim 9, characterized in that: The first rotating connection member is integrally formed with one of the first rotating arm and the first movable seat; and at least one of the first rotating connection member and the first arc block is elastic.

11. The rotating shaft mechanism according to claim 9, characterized in that: One of the first rotating arm and the base includes a second arc groove, the other of the first rotating arm and the base includes a second arc block, and the first rotating arm and the base are connected to each other through the cooperation and rotation of the second arc groove and the second arc block.

12. The rotating shaft mechanism according to any one of claims 1 to 8, characterized in that: The rotating shaft mechanism further includes a second rotating shaft assembly, which includes a second rotating shaft, a second movable seat, a third connecting rod arm, a fourth connecting rod arm, a second elastic member, a second rotating arm and a second rotating connecting member. The second movable seat is arranged at the other side of the base, the third link arm and the fourth link arm are arranged between the base and the second movable seat and are arranged at intervals, the third link arm is rotatably connected to the base via the second rotating shaft, and the third link arm is slidably connected to the second movable seat, and the side of the third link arm away from the fourth link arm is in sliding contact with the second movable seat, the fourth link arm is rotatably connected to the base via the second rotating shaft, and the fourth link arm is slidably connected to the second movable seat, and the side of the fourth link arm away from the third link arm is in sliding contact with the second movable seat; the second elastic member is interposed between the third link arm and the fourth link arm in a compressed state, and is used to squeeze the third link arm toward the side away from the fourth link arm, and squeeze the fourth link arm toward the side away from the third link arm; The second rotating arm is rotatably connected to the base, the second rotating connecting member is fixedly connected to the second rotating arm and one of the second movable seats, the second rotating connecting member has a third arc groove, the other of the second rotating arm and the second movable seat includes a third arc block, the third arc groove is wrapped outside the third arc block, and the third arc groove and the third arc block can rotate relative to each other.

13. The rotating shaft mechanism according to claim 12, characterized in that: The rotating shaft mechanism also includes a synchronization member arranged between the first link arm, the second link arm, the third link arm and the fourth link arm, the synchronization member includes a first spiral surface, a second spiral surface, a third spiral surface and a fourth spiral surface, the first spiral surface is arranged opposite to the second spiral surface, and contacts and cooperates with the first link arm and the second link arm respectively, the third spiral surface is arranged opposite to the fourth spiral surface, and contacts and cooperates with the third link arm and the fourth link arm respectively, and the synchronization member is used to drive the first link arm, the second link arm, the third link arm and the fourth link arm to rotate synchronously relative to the base.

14. A foldable housing, characterized in that: It includes a first shell, a second shell and a hinge mechanism as described in any one of claims 1 to 13, wherein the first shell is arranged on one side of the hinge mechanism, and the second shell is arranged on the other side of the hinge mechanism, and the first shell and the second shell can move toward each other to be folded, or the first shell and the second shell can move away from each other to be unfolded.

15. A foldable electronic device, characterized in that: It comprises a flexible display screen and the foldable shell as claimed in claim 14, wherein the flexible display screen comprises a first non-bending display area, a bending display area and a second non-bending display area arranged in sequence, the first non-bending display area covers the first shell, the bending display area covers the hinge mechanism, and the second non-bending display area covers the second shell.

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