Rotating shaft mechanism, foldable housing and foldable electronic device

Abstract

The application provides a rotating shaft mechanism, a foldable shell and a foldable electronic device. 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 and are spaced apart. The first connecting rod arm and the second connecting rod arm are rotatably connected to the base through the first rotating shaft, and are slidably connected to the first movable seat. One side of the first connecting rod arm, which is away from the second connecting rod arm, is in sliding contact with the first movable seat. One side of the second connecting rod arm, which is away from the first connecting rod arm, is in sliding contact with the first movable seat. The first elastic piece is arranged between the first connecting rod arm and the second connecting rod arm in a compressed state. The rotating shaft mechanism, the foldable shell and the foldable electronic device provided by the application have increased torsion and improved hovering effect.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electronics, in particular to a rotating shaft mechanism, a foldable shell and a foldable electronic device. BACKGROUND

[0002] With the development of thin and small foldable electronic devices, the structure size of the rotating shaft mechanism is reduced accordingly, which results in insufficient torsion of the rotating shaft mechanism and difficulty in achieving a good hovering effect. SUMMARY

[0003] The present application provides a rotating shaft mechanism, a foldable shell and a foldable electronic device capable of increasing torsion and improving hovering effect.

[0004] In one aspect, the present application provides a rotating shaft mechanism, comprising:

[0005] a base;

[0006] a first rotating shaft assembly, comprising 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 and are spaced apart, the first connecting rod arm is rotatably connected to the base through the first rotating shaft, and the first connecting rod arm is slidably connected to the first movable seat, one side of the first connecting rod arm away from the second connecting rod arm is in sliding contact with the first movable seat, the second connecting rod arm is rotatably connected to the base through the first rotating shaft, and the second connecting rod arm is slidably connected to the first movable seat, one side of the second connecting rod arm away from the first connecting rod arm is in sliding contact with the first movable seat; and

[0007] a first elastic member, in a compressed state, between the first connecting rod arm and the second connecting rod arm, for pressing the first connecting rod arm away from the second connecting rod arm and pressing the second connecting rod arm away from the first connecting rod arm.

[0008] In another aspect, the present application also provides a foldable shell, comprising a first shell, a second shell and the rotating shaft mechanism, the first shell is arranged on one side of the rotating shaft mechanism and connected to the first connecting rod arm and the second connecting rod arm, the first shell can drive the first connecting rod arm and the second connecting rod arm to rotate relative to the base, the second shell is arranged on the other side of the rotating shaft mechanism, and the second shell can move towards the first shell to be folded or move away from the first shell to be unfolded.

[0009] In still another aspect, the application further provides a foldable electronic device, comprising a flexible display screen and the foldable housing, the flexible display screen covering the first housing, the hinge mechanism and the second housing, and the flexible display screen comprising 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 being fixedly connected to the first housing, and the second non-bending display area being fixedly connected to the second housing.

[0010] In the hinge mechanism provided by the application, the first connecting rod arm and the second connecting rod arm are arranged between the base and the first movable seat and are spaced apart, the first connecting rod arm and the second connecting rod arm are both rotationally connected to the base through the first hinge, and the first connecting rod arm and the second connecting rod arm are both slidingly connected to the first movable seat, the side of the first connecting rod arm away from the second connecting rod arm slidingly contacts the first movable seat, the side of the second connecting rod arm away from the first connecting rod arm slidingly contacts the first movable seat, the first elastic member is in a compressed state between the first connecting rod arm and the second connecting rod arm, and is used for pressing the first connecting rod arm away from the second connecting rod arm and pressing the second connecting rod arm away from the first connecting rod arm, so that the friction between the first connecting rod arm and the first movable seat and the friction between the second connecting rod arm and the first movable seat are increased during relative sliding, so that the torsion of the hinge mechanism is increased, and the hovering effect of one side of the hinge mechanism is improved. BRIEF DESCRIPTION OF DRAWINGS

[0011] In order to more clearly illustrate the technical solutions of the embodiments of the application, the drawings needed in the embodiments will be briefly introduced below.

[0012] Figure 1 A planar structural schematic view of the foldable electronic device provided by the embodiment of the application in a flat state;

[0013] Figure 2 A planar structural schematic view of the foldable electronic device provided by the embodiment of the application in a folded state;

[0014] Figure 3 A planar structural schematic view of the foldable electronic device provided by the embodiment of the application in a hovering state;

[0015] Figure 4 A planar structural schematic view of the foldable housing in the foldable electronic device shown in FIG. 1; Figure 1

[0016] A planar structural schematic view of the foldable housing in the foldable electronic device shown in FIG. 1; Figure 5 Figure 2 A planar structural schematic view of the flexible display screen in the foldable electronic device shown in FIG. 1;

[0017] Figure 6 Figure 5 ​​The diagram shows a flexible display screen with a teardrop-shaped planar structure.

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

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

[0020] Figure 9 A schematic diagram of the rotating shaft mechanism provided in the embodiment of this application when it is in a flattened state;

[0021] Figure 10 A schematic diagram of the rotating shaft mechanism provided in the embodiment of this application when it is in a folded state;

[0022] Figure 11 for Figure 7 An exploded view of the base, first link arm, second link arm, first movable seat, and first elastic element in the rotating shaft mechanism shown.

[0023] Figure 12 for Figure 9 An exploded view of the base, first rotating shaft assembly, third connecting arm, fourth connecting arm, second movable seat, and third elastic element in the rotating shaft mechanism shown.

[0024] Figure 13 for Figure 9 The diagram illustrates the following structural connection of the rotating shaft mechanism: the first link arm and the first movable seat are slidably connected by the first top surface, the first side surface, and the first bottom surface to the first sliding connection surface, the second sliding connection surface, and the third sliding connection surface, respectively; the second link arm and the second movable seat are slidably connected by the second top surface, the second side surface, and the second bottom surface to the fourth sliding connection surface, the fifth sliding connection surface, and the sixth sliding connection surface, respectively; the third link arm and the second movable seat are slidably connected by the third top surface, the third side surface, and the third bottom surface to the seventh sliding connection surface, the eighth sliding connection surface, and the ninth sliding connection surface, respectively; and the fourth link arm and the second movable seat are slidably connected by the fourth top surface, the fourth side surface, and the fourth bottom surface to the tenth sliding connection surface, the eleventh sliding connection surface, and the twelfth sliding connection surface, respectively.

[0025] Figure 14 for Figure 9 The schematic diagram shown also includes a torque assembly in the rotating shaft mechanism.

[0026] Figure 15 for Figure 14 The diagram shows an exploded view of the torque component of the rotating shaft mechanism, the first rotating shaft component, and the second rotating shaft component.

[0027] Figure 16 for Figure 14 The diagram shows the structure of the base of the rotating shaft mechanism, which includes a first limiting part and a second limiting part arranged at intervals.

[0028] Figure 17 for Figure 16 The schematic diagram of the structure of the first rotating shaft assembly of the rotating shaft mechanism shown includes a first rotating arm and a first rotating connector;

[0029] Figure 18 for Figure 17 The diagram shows a cross-sectional view of the rotating connection between the first rotating arm and the first rotating connector when the rotating shaft mechanism is in the folded state.

[0030] Figure 19 for Figure 16 The schematic diagram shows the structure of the rotating shaft mechanism in which the first rotating arm 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] Figure 20 for Figure 19 The rotating shaft mechanism shown also includes a synchronizing element, and is a structural diagram of the rotating shaft mechanism in the folded state;

[0032] Figure 21 for Figure 20 An exploded view of the synchronizing element and base, the first rotating shaft assembly, and the second rotating shaft assembly of the rotating shaft mechanism shown.

[0033] Figure 22 for Figure 19 The diagram shows the rotating shaft mechanism, which also includes a synchronizing element, and is a structural diagram of the rotating shaft mechanism in the folded state.

[0034] Explanation of reference numerals in the attached figures:

[0035] Foldable electronic device 1000; foldable housing 100; first housing 11; second housing 12; flexible display 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 arm 122; second connecting arm 123; second hinge 140; second movable seat 141; third connecting arm 142; fourth connecting arm 143; first support connecting part 1220; second support connecting part 1230; third support connecting part 1420; fourth support connecting part 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 connecting surface 121a; second sliding connecting surface 121b; third sliding connecting surface 121c; third side surface 1421; third top surface 1422; third bottom surface 1423; seventh sliding connecting surface 141a; eighth sliding connecting surface 141b; ninth sliding connecting surface 141c; fourth top surface 1431; fourth side surface 1432; fourth bottom surface 1433; tenth sliding connecting surface 141d; eleventh sliding connecting surface 141e; twelfth sliding connecting surface 141f; torsion assembly 106; extrusion member 161; second elastic member 162; first cam part 1610; second cam part 1224; fourth elastic member 163; third cam part 1611; fourth cam part 1424; first limiting part 110; second limiting part 111; first rotating connecting part 1225; second rotating connecting part 1226; third rotating connecting part 1234; third limiting part 113; fourth limiting part 114; fourth rotating connecting part 1425; fifth rotating connecting part 1426; sixth rotating connecting part 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; synchronizing member 107; first helical curved surface 171; second helical curved surface 172; third helical curved surface 173; fourth helical curved surface 174. DETAILED DESCRIPTION

[0036] The technical solutions provided in this application will now be clearly and completely described with reference to the accompanying drawings. Obviously, the embodiments described in this application are only a part of the embodiments, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments described in this application without creative effort are within the protection scope of this application.

[0037] In this application, the terms "embodiment" or "implementation" mean that a specific feature, structure, or characteristic described in connection with an embodiment or implementation can be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a mutually exclusive, independent, or alternative embodiment to other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described in this application can be combined with other embodiments.

[0038] The terms “first,” “second,” etc., in the specification, claims, and accompanying drawings of this application are used to distinguish different objects, rather than to describe a particular order; furthermore, the terms “comprising” and “having,” and any variations thereof, are intended to cover non-exclusive inclusion.

[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 this application embodiment 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 this application embodiment when it is in a folded state. Figure 3 This is a schematic diagram of the planar structure of the foldable electronic device 1000 provided in this application when it is in a hovering state. The foldable electronic device 1000 provided in this application can be a foldable mobile phone, a foldable tablet, a foldable e-reader, etc. A foldable mobile phone is used as an example in this application embodiment. 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 is understood that when the foldable electronic device 1000 is in a flattened state, the flexible display screen 200 and the foldable housing 100 are also in a flattened state; when the foldable electronic device 1000 is in a folded state, the flexible display screen 200 and the foldable housing 100 are also in a folded state; and when the foldable electronic device 1000 is in a hovering state, the flexible display screen 200 and the foldable housing 100 are also in a hovering state.

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

[0042] Understandably, when the foldable shell 100 is in a flattened state, the pivot mechanism 10 is also in a flattened state; when the foldable shell 100 is in a folded state, the pivot mechanism 10 is also in a folded state; when the foldable shell 100 is in a folded state, the pivot mechanism 10 is also in a folded state; and when the foldable shell 100 is in a hovered state, the pivot mechanism 10 is also in a hovered state. Specifically, the foldable shell 100 being in a flattened state can be understood as the angle between the first shell 11 and the second shell 12 being 180° or close to 180°. The foldable shell 100 being in a folded state can be understood as the angle between the first shell 11 and the second shell 12 being 0° or close to 0°. The foldable shell 100 being in a hovered state can be understood as the angle between the first shell 11 and the second shell 12 being 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 sequentially. The first non-bending display area 21 covers the first housing 11. The bending display area 22 covers the rotating shaft mechanism 10. The second non-bending display area 23 covers the second housing 12.

[0044] The flexible display screen 200 can be a flexible organic light-emitting diode (OLED) display screen. The first non-bending display area 21 can be fixedly connected to the first housing 11. The second non-bending display area 23 can be fixedly connected to the second housing 12. Optionally, the non-display side of the first non-bending display area 21 is bonded to the first housing 11, and the non-display side of the second non-bending display area 23 is bonded to the second housing 12. When the flexible display screen 200 switches between a flattened state, a folded state, and a 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 can be either not connected or partially connected to the pivot mechanism 10. The bending display area 22 flattens when the flexible display screen 200 is in the flattened state and bends when the flexible display screen 200 is in the folded state.

[0045] In one possible embodiment, such as Figure 6 As shown, the flexible display screen 200 can be teardrop-shaped when folded. Specifically, the bent display area 22 may include a first sub-bent-bent display area 221, a second sub-bent-bent display area 222, and a third sub-bent-bent display area 223 arranged sequentially. The first sub-bent-bent display area 221 is adjacent to the first non-bent display area 21. The third sub-bent-bent display area 223 is adjacent to the second non-bent display area 23. It can be understood that the flexible display screen 200 includes a first non-bent display area 21, a first sub-bent-bent display area 221, a second sub-bent-bent display area 222, a third sub-bent-bent display area 223, and a second non-bent display area 23 arranged sequentially. When the flexible display screen 200 is in the folded state, the first non-bending display area 21 and the second non-bending display area 23 are opposite each other. The line length 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 length between the end of the first sub-bending display area 221 near the second sub-bending display area 222 and the end of the third sub-bending display area 223 near the second sub-bending display area 222 is L2, where L1 is less 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 rotating shaft mechanism 10 and bend under the action of the rotating shaft mechanism 10, respectively. The second sub-bending display area 222 of the bending display area 22 is not connected to the rotating shaft mechanism 10, so it can bend freely.

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

[0047] In the process of switching the rotating shaft mechanism 10 from the unfolded state to the hovering state, from the unfolded state to the folded state, from the hovering state to the unfolded state, from the hovering state to the folded state, from the folded state to the hovering state and from the folded state to the unfolded state, the base 101 is stationary.

[0048] The first rotating shaft assembly 102 comprises 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 movable seat 121 is arranged on one side of the base 101. In the embodiments of the present application, the first movable seat 121 is arranged on the left side of the base 101 in the unfolded state of the rotating shaft mechanism 10. Of course, in other embodiments, the first movable seat 121 can be arranged on the right side of the base 101 in the unfolded state of the rotating shaft mechanism 10. The first movable seat 121 can be fixedly connected with 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, buckle connection and the like. 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 spaced apart. 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, the first connecting arm 122 is provided with a first shaft hole, and the first rotating shaft 120 penetrates 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 sliding block and a sliding groove. Alternatively, the first connecting arm 122 is provided with the sliding block, and the first movable seat 121 is provided with the sliding groove; or the first connecting arm 122 is provided with the sliding groove, and the first movable seat 121 is provided with the sliding block. The side, away from the second connecting arm 123, of the first connecting arm 122 is in sliding contact with the first movable seat 121. It can be understood that in the process of relative sliding between the first connecting arm 122 and the first movable seat 121, the side, away from the second connecting arm 123, of the first connecting arm 122 is in contact with the first movable seat 121. In the process of relative sliding between the first connecting arm 122 and the first movable seat 121, the first connecting arm 122 rotates relative to the base 101. In other words, the process of relative sliding between the first connecting arm 122 and the first movable seat 121 and the process of rotation of the first connecting arm 122 relative to the base 101 are both the process of change of the state of one side of the rotating shaft mechanism 10, i.e., the process of switching between the flat state, the folded state and the hovering state of one side of the rotating shaft mechanism 10.

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

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

[0052] The first elastic member 103 can be a spring, a bellows, or the like. 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 connecting rod arm 122 and the second connecting rod arm 123, and is configured to press the first connecting rod arm 122 on the side away from the second connecting rod arm 123, and press the second connecting rod arm 123 on the side away from the first connecting rod arm 122. It can be understood that the first elastic member 103 is always in a compressed state. One side of the first elastic member 103 can abut against one side of the first connecting rod arm 122 facing the second connecting rod arm 123, and the other side of the first elastic member 103 can abut against one side of the second connecting rod arm 123 facing the first connecting rod arm 122. In other words, the first elastic member 103 can directly provide pressing force to the first connecting rod arm 122 and the second connecting rod arm 123. Of course, in other embodiments, the first elastic member 103 can also indirectly provide pressing force to the first connecting rod arm 122 and the second connecting rod arm 123 through an intermediate structure such as a gasket. When the rotating shaft mechanism 10 is switched between the unfolded state, the folded state, and the hovering state, the state of the first elastic member 103 being compressed between the first connecting rod arm 122 and the second connecting rod arm 123 does not change.

[0053] The rotating shaft mechanism 10 provided by the present application is configured such that 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 spaced apart. The first connecting rod arm 122 and the second connecting rod arm 123 are both rotatably connected to the base 101 through the first rotating shaft 120, and are both slidably connected to the first movable seat 121. One side of the first connecting rod arm 122 away from the second connecting rod arm 123 is in sliding contact with the first movable seat 121, and one side of the second connecting rod arm 123 away from the first connecting rod 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 rod arm 122 and the second connecting rod arm 123, and is configured to press the first connecting rod arm 122 on the side away from the second connecting rod arm 123, and press the second connecting rod arm 123 on the side away from the first connecting rod arm 122. Therefore, the contact reliability and tightness between the first connecting rod arm 122 and the first movable seat 121, and between the second connecting rod arm 123 and the first movable seat 121 are higher. In other words, the friction between the first connecting rod arm 122 and the first movable seat 121, and between the second connecting rod arm 123 and the first movable seat 121 is increased during the relative sliding between the first connecting rod arm 122, the second connecting rod arm 123, and the first movable seat 121. As a result, the torsional force of the rotating shaft mechanism 10 is increased, and the hovering effect on one side of the rotating shaft mechanism 10 is improved.

[0054] Please refer to Figure 9 and Figure 10 , Figure 9 the structural schematic diagram of the rotating shaft mechanism 10 provided by the embodiments of the present application in the unfolded state, Figure 10A structure schematic diagram of the hinge mechanism 10 in the folded state is provided in the embodiments of the present application. The hinge mechanism 10 further comprises a second hinge assembly 104 and a third elastic member 105.

[0055] The second hinge assembly 104 comprises a second hinge 140, a second movable seat 141, a third connecting rod arm 142 and a fourth connecting rod arm 143. The second movable seat 141 is arranged on the other side of the base 101. In the embodiments of the present application, the second movable seat 141 is arranged on the right side of the base 101 in the unfolded state of the hinge mechanism 10. Of course, in other embodiments, the second movable seat 141 can be arranged on the left side of the base 101 in the unfolded state of the hinge mechanism 10. The second movable seat 141 can be fixedly connected with the second housing 12. For example, the second movable seat 141 and the second housing 12 can be fixedly connected by bonding, welding, bolt connection, buckle connection or the like. The third connecting rod arm 142 and the fourth connecting rod arm 143 are arranged between the base 101 and the second movable seat 141 and are spaced apart. The present application does not specifically limit the spacing distance between the third connecting rod arm 142 and the fourth connecting rod arm 143.

[0056] The third connecting rod arm 142 is rotatably connected with the base 101 through the second hinge 140. For example, the third connecting rod arm 142 is rotatably connected with the second hinge 140, and the second hinge 140 is fixedly connected with the base 101; or the third connecting rod arm 142 is fixedly connected with the second hinge 140, and the second hinge 140 is rotatably connected with the base 101. In a possible embodiment, the second hinge 140 is fixedly connected with the base 101, the third connecting rod arm 142 is provided with a third shaft hole, and the second hinge 140 penetrates through the third shaft hole, so that the third connecting rod arm 142 is rotatably connected with the base 101. The third connecting rod arm 142 is slidably connected with the second movable seat 141. For example, the third connecting rod arm 142 and the second movable seat 141 are slidably connected through the cooperation of a sliding block and a sliding groove. Optionally, the third connecting rod arm 142 is provided with a sliding block, and the second movable seat 141 is provided with a sliding groove; or the third connecting rod arm 142 is provided with a sliding groove, and the second movable seat 141 is provided with a sliding block. The side of the third connecting rod arm 142 away from the fourth connecting rod arm 143 is in sliding contact with the second movable seat 141. It can be understood that in the process of relative sliding between the third connecting rod arm 142 and the second movable seat 141, the side of the third connecting rod arm 142 away from the fourth connecting rod arm 143 is in contact with the second movable seat 141. In the process of relative sliding between the third connecting rod arm 142 and the second movable seat 141, the third connecting rod arm 142 rotates relative to the base 101. In other words, the process of relative sliding between the third connecting rod arm 142 and the second movable seat 141 and the process of rotation of the third connecting rod arm 142 relative to the base 101 are both the process of change of the state of the other side of the hinge mechanism 10, i.e. the process of switching between the unfolded state, the folded state and the hovering state of the other side of the hinge mechanism 10.

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

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

[0059] The third elastic member 105 can be a spring, a bellows, or the like. 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 configured to press the third link arm 142 away from the fourth link arm 143 and press the fourth link arm 143 away from the third link arm 142. It can be understood that the third elastic member 105 is always in a compressed state. One side of the third elastic member 105 can abut against one 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 one side of the fourth link arm 143 facing the third link arm 142. In other words, the third elastic member 105 can directly provide pressing 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 pressing force to the third link arm 142 and the fourth link arm 143 through an intermediate structure such as a gasket. When the rotation shaft mechanism 10 switches between the unfolded state, the folded state, and the hovering state, the state of the third elastic member 105 compressed between the third link arm 142 and the fourth link arm 143 does not change.

[0060] The second rotation shaft assembly 104 and the first rotation shaft assembly 102 can be symmetrically arranged. The structure design of the second rotation shaft assembly 104 in this embodiment can make the third elastic member 105 of the second rotation shaft assembly 104 press the third link arm 142 away from the fourth link arm 143 and press the fourth link arm 143 away from the third link arm 142, so that the contact reliability and tightness 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 are higher, that is, the friction between the third link arm 142 and the second movable seat 141 and the friction between the fourth link arm 143 and the second movable seat 141 are increased in the process of relative sliding between the third link arm 142, the fourth link arm 143, and the second movable seat 141, thereby being able to increase the torsion on the other side of the rotation shaft mechanism 10 and improve the hovering effect on the other side of the rotation shaft mechanism 10.

[0061] As Figure 11As shown, the first connecting rod arm 122 is provided with a first support connecting portion 1220 on the side facing the second connecting rod arm 123. The second connecting rod arm 123 is provided with a second support connecting portion 1230 on the side facing the first connecting rod arm 122. The first connecting rod arm 122 provided with the first support connecting portion 1220 can be understood as that the first support connecting portion 1220 is integrally formed with the first connecting rod arm 122, or can also be understood as that the first support connecting portion 1220 is fixed to the first connecting rod arm 122 by a detachable or non-detachable connecting manner. The second connecting rod arm 123 provided with the second support connecting portion 1230 can be understood as that the second support connecting portion 1230 is integrally formed with the second connecting rod arm 123, or can also be understood as that the second support connecting portion 1230 is fixed to the second connecting rod arm 123 by a detachable or non-detachable connecting manner. The side of the first support connecting portion 1220 away from the first connecting rod arm 122 can be in contact with or spaced apart from the side of the second support connecting portion 1230 away from the second connecting rod arm 123. The shape of the first support connecting portion 1220 and the shape of the second support connecting portion 1230 are not specifically limited in the present application. For example, the first support connecting portion 1220 can be cylindrical, prismatic, etc.; the second support connecting portion 1230 can be cylindrical, prismatic, etc. In a possible embodiment, the first support connecting portion 1220 can be cylindrical, and the second support connecting portion 1230 can be cylindrical. One end of the first elastic member 103 is sleeved on the first support connecting portion 1220, and the other end is sleeved on the second support connecting portion 1230. The extension direction of the first support connecting portion 1220 can be parallel to the axial direction of the first rotating shaft 120, and the extension direction of the second support connecting portion 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 sleeved on the first support connecting portion 1220 and the second support connecting portion 1230 can be parallel to the axial direction of the first rotating shaft 120, so that the first elastic member 103 can extrude the first connecting rod arm 122 and the second connecting rod 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 torsion of the rotating shaft mechanism 10 by the first elastic member 103.

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

[0063] AsFigure 12 As shown, the third connecting arm 142 is provided with a third support connecting portion 1420 on one side thereof facing the fourth connecting arm 143. The fourth connecting arm 143 is provided with a fourth support connecting portion 1430 on one side thereof facing the third connecting arm 142. The third connecting arm 142 provided with the third support connecting portion 1420 can be understood as that the third support connecting portion 1420 is integrally formed with the third connecting arm 142, or can also be understood as that the third support connecting portion 1420 is fixed to the third connecting arm 142 by means of detachable or non-detachable connection. The fourth connecting arm 143 provided with the fourth support connecting portion 1430 can be understood as that the fourth support connecting portion 1430 is integrally formed with the fourth connecting arm 143, or can also be understood as that the fourth support connecting portion 1430 is fixed to the fourth connecting arm 143 by means of detachable or non-detachable connection. The side of the third support connecting portion 1420 away from the third connecting arm 142 can be in contact with or spaced apart from the side of the fourth support connecting portion 1430 away from the fourth connecting arm 143. The shape of the third support connecting portion 1420 and the shape of the fourth support connecting portion 1430 are not specifically limited in the present application. For example, the third support connecting portion 1420 can be cylindrical or prismatic, and the fourth support connecting portion 1430 can be cylindrical or prismatic. In a possible embodiment, the third support connecting portion 1420 can be cylindrical, and the fourth support connecting portion 1430 can be cylindrical. One end of the third elastic member 105 is sleeved on the third support connecting portion 1420, and the other end is sleeved on the fourth support connecting portion 1430. The extension direction of the third support connecting portion 1420 can be parallel to the axial direction of the second rotating shaft 140, and the extension direction of the fourth support connecting portion 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 sleeved on the third support connecting portion 1420 and the fourth support connecting portion 1430 can be parallel to the axial direction of the second rotating shaft 140, so that the third elastic member 105 can extrude 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 the reliability of the torsion force of the rotating shaft mechanism 10 through the third elastic member 105.

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

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

[0066] By non-rotatably sleeving the first elastic member 103 on the first support connecting portion 1220 and / or non-rotatably sleeving the first elastic member 103 on the second support connecting portion 1230, the stability of the first elastic member 103 can be ensured, and the first elastic member 103 is prevented from rotating relative to the first connecting rod arm 122 and the second connecting rod arm 123, so that the reliability of the frictional force generated between the first connecting rod arm 122, the second connecting rod arm 123 and the first movable seat 121 can be improved by the extrusion of the first elastic member 103 on the first connecting rod arm 122 and the second connecting rod arm 123, and the effectiveness of increasing the torsion of the rotating shaft mechanism 10 by the first elastic member 103 can be improved.

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

[0068] By non-rotatably sleeving the third elastic member 105 on the third support connecting portion 1420 and / or non-rotatably sleeving the third elastic member 105 on the fourth support connecting portion 1430, the stability of the third elastic member 105 can be ensured, and the third elastic member 105 is prevented from rotating relative to the third connecting rod arm 142 and the fourth connecting rod arm 143, so that the reliability of the frictional force generated between the third connecting rod arm 142, the fourth connecting rod arm 143 and the second movable seat 141 can be improved by the extrusion of the third elastic member 105 on the third connecting rod arm 142 and the fourth connecting rod arm 143, and the effectiveness of increasing the torsion of the rotating shaft mechanism 10 by the third elastic member 105 can be improved.

[0069] As shown in Figure 13 the first side surface 1221, the first top surface 1222, and the first bottom surface 1223 are sequentially connected. The second link arm 123 includes a second side surface 1231, a second top surface 1232, and a second bottom surface 1233 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 sequentially connected. The first movable seat 121 includes a first sliding connection portion 1210 and a second sliding connection portion 1211 which 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 which are sequentially connected. 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 which are sequentially connected. The first top surface 1222 is in sliding contact with the first sliding connection surface 121a, the first side surface 1221 is in sliding contact with the second sliding connection surface 121b, and the first bottom surface 1223 is in sliding contact with the third sliding connection surface 121c. The second top surface 1232 is in sliding contact with the fourth sliding connection surface 121d, the second side surface 1231 is in sliding contact with the fifth sliding connection surface 121e, and the second bottom surface 1233 is in sliding contact with the sixth sliding connection surface 121f.

[0070] In a possible implementation, the first top surface 1222, the first side surface 1221, and the first bottom surface 1223 form a first sliding block. The second top surface 1232, the second side surface 1231, and the second bottom surface 1233 form a second sliding block. The first sliding connection surface 121a, the second sliding connection surface 121b, and the third sliding connection surface 121c form a first sliding groove. The fourth sliding connection surface 121d, the fifth sliding connection surface 121e, and the sixth sliding connection surface 121f form a second sliding groove. The first link arm 122 and the first movable seat 121 are in sliding connection through cooperation of the first sliding block and the first sliding groove. The second link arm 123 and the first movable seat 121 are in sliding connection through cooperation of the second sliding block and the second sliding groove. Of course, in other possible implementations, the first top surface 1222, the first side surface 1221, and the first bottom surface 1223 can form a sliding groove structure, and the first sliding connection surface 121a, the second sliding connection surface 121b, and the third sliding connection surface 121c can form a sliding block structure. The second top surface 1232, the second side surface 1231, and the second bottom surface 1233 can form a sliding groove structure, and the fourth sliding connection surface 121d, the fifth sliding connection surface 121e, and the sixth sliding connection surface 121f can form a sliding block structure.

[0071] By making the first connecting rod 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 rod arm 122 and the first movable seat 121 are slidingly connected through the cooperation of the first top surface 1222, the first side surface 1221 and the first bottom surface 1223 with the first sliding connection surface 121a, the second sliding connection surface 121b and the third sliding connection surface 121c respectively, so that the limiting between the first connecting rod arm 122 and the first movable seat 121 can be achieved, the disengagement of the first connecting rod arm 122 and the first movable seat 121 can be avoided, and the assembly difficulty of the first connecting rod arm 122 and the first movable seat 121 can be reduced. By making the second connecting rod 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 rod arm 123 and the second movable seat 141 are slidingly connected through the cooperation of the second top surface 1232, the second side surface 1231 and the second bottom surface 1233 with the fourth sliding connection surface 121d, the fifth sliding connection surface 121e and the sixth sliding connection surface 121f respectively, so that the limiting between the second connecting rod arm 123 and the first movable seat 121 can be achieved, the disengagement of the second connecting rod arm 123 and the first movable seat 121 can be avoided, and the assembly difficulty of the second connecting rod arm 123 and the second movable seat 141 can be reduced.

[0072] It can be understood that the first top surface 1222 and the first sliding connection surface 121a are in contact during the relative sliding process of the first connecting rod arm 122 and the first movable seat 121, the first side surface 1221 and the second sliding connection surface 121b are in contact during the relative sliding process of the first connecting rod arm 122 and the first movable seat 121, and the first bottom surface 1223 and the third sliding connection surface 121c are in contact during the relative sliding process of the first connecting rod arm 122 and the first movable seat 121. The second top surface 1232 and the fourth sliding connection surface 121d are in contact during the relative sliding process of the first connecting rod arm 122 and the first movable seat 121, the second side surface 1231 and the fifth sliding connection surface 121e are in contact during the relative sliding process of the first connecting rod arm 122 and the first movable seat 121, and the second bottom surface 1233 and the sixth sliding connection surface 121f are in contact during the relative sliding process of the first connecting rod 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 can be less 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 can be less than the area of the second bottom surface 1233. By making the area of the first side surface 1221 less than the area of the first bottom surface 1223 and the area of the second side surface 1231 less 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 less than the area of the first bottom surface 1223 and the area of the second top surface 1232 less than the area of the second bottom surface 1233, the assembly difficulty of the first connecting rod arm 122, the second connecting rod arm 123 and the second movable seat 141 can be further reduced, and the possibility of self-locking between the first connecting rod arm 122, the second connecting rod arm 123 and the second movable seat 141 can be reduced, thereby improving the folding sensitivity of one side of the rotating shaft mechanism 10.

[0074] The side of the third connecting rod arm 142 away from the fourth connecting rod arm 143 includes a third side surface 1421. The third connecting rod arm 142 further includes a third top surface 1422 and a third bottom surface 1423 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 sequentially connected. The side of the fourth connecting rod arm 143 away from the third connecting rod arm 142 includes a fourth side surface 1432. The fourth connecting rod arm 143 further includes a fourth top surface 1431 and a fourth bottom surface 1433 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 sequentially connected. 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 sequentially connected. 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 sequentially connected. The third top surface 1422 is in sliding contact with the seventh sliding connection surface 141a. The third side surface 1421 is in sliding contact with the eighth sliding connection surface 141b. The third bottom surface 1423 is in sliding contact with the ninth sliding connection surface 141c. The fourth top surface 1431 is in sliding contact with the tenth sliding connection surface 141d. The fourth side surface 1432 is in sliding contact with the eleventh sliding connection surface 141e. The fourth bottom surface 1433 is in sliding 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 sliding block. The fourth top surface 1431, the fourth side surface 1432 and the fourth bottom surface 1433 form a fourth sliding block. The third sliding connection surface 141a, the eighth sliding connection surface 141b and the ninth sliding connection surface 141c form a third sliding groove. The tenth sliding connection surface 141d, the eleventh sliding connection surface 141e and the twelfth sliding connection surface 141f form a fourth sliding groove. The third connecting rod arm 142 and the second movable seat 141 are connected through the cooperation of the third sliding block and the third sliding groove. The fourth connecting rod arm 143 and the second movable seat 141 are connected through the cooperation of the fourth sliding block and the fourth sliding groove. Of course, in other possible implementations, the third top surface 1422, the third side surface 1421 and the third bottom surface 1423 can form a sliding groove structure, and the third sliding connection surface 141a, the eighth sliding connection surface 141b and the ninth sliding connection surface 141c can form a sliding block structure. The fourth top surface 1431, the fourth side surface 1432 and the fourth bottom surface 1433 can form a sliding groove structure, and the tenth sliding connection surface 141d, the eleventh sliding connection surface 141e and the twelfth sliding connection surface 141f can form a sliding block structure.

[0076] By sequentially connecting the third top surface 1422, the third side surface 1421 and the third bottom surface 1423 in the third connecting rod arm 142, and sequentially connecting the seventh sliding connection surface 141a, the eighth sliding connection surface 141b and the ninth sliding connection surface 141c in the third sliding connection part 1410, and connecting the third top surface 1422, the third side surface 1421 and the third bottom surface 1423 with the seventh sliding connection surface 141a, the eighth sliding connection surface 141b and the ninth sliding connection surface 141c respectively through the cooperation of the third top surface 1422, the third side surface 1421 and the third bottom surface 1423 and the seventh sliding connection surface 141a, the eighth sliding connection surface 141b and the ninth sliding connection surface 141c respectively, the third connecting rod arm 142 and the second movable seat 141 are connected through the cooperation of the third top surface 1422, the third side surface 1421 and the third bottom surface 1423 and the seventh sliding connection surface 141a, the eighth sliding connection surface 141b and the ninth sliding connection surface 141c respectively, which can limit the third connecting rod arm 142 and the second movable seat 141, avoid the disconnection of the third connecting rod arm 142 and the second movable seat 141, and reduce the assembly difficulty of the third connecting rod arm 142 and the second movable seat 141. By sequentially connecting the fourth top surface 1431, the fourth side surface 1432 and the fourth bottom surface 1433 in the fourth connecting rod arm 143, and sequentially connecting the tenth sliding connection surface 141d, the eleventh sliding connection surface 141e and the twelfth sliding connection surface 141f in the fourth sliding connection part 1411, and connecting the fourth top surface 1431, the fourth side surface 1432 and the fourth bottom surface 1433 with the tenth sliding connection surface 141d, the eleventh sliding connection surface 141e and the twelfth sliding connection surface 141f respectively through the cooperation of the fourth top surface 1431, the fourth side surface 1432 and the fourth bottom surface 1433 and the tenth sliding connection surface 141d, the eleventh sliding connection surface 141e and the twelfth sliding connection surface 141f respectively, the fourth connecting rod arm 143 and the second movable seat 141 are connected through the cooperation of the fourth top surface 1431, the fourth side surface 1432 and the fourth bottom surface 1433 and the tenth sliding connection surface 141d, the eleventh sliding connection surface 141e and the twelfth sliding connection surface 141f respectively, which can limit the fourth connecting rod arm 143 and the second movable seat 141, avoid the disconnection of the fourth connecting rod arm 143 and the second movable seat 141, and reduce the assembly difficulty of the fourth connecting rod arm 143 and the second movable seat 141.

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

[0078] In the embodiment, the area of the third top surface 1422 and the area of the third side surface 1421 can be less 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 can be less than the area of the fourth bottom surface 1433. By making the area of the third side surface 1421 less than the area of the third bottom surface 1423 and the area of the fourth side surface 1432 less 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 connecting rod arm 142, the fourth connecting rod arm 143 and the second movable seat 141. By making the area of the third top surface 1422 less than the area of the third bottom surface 1423 and the area of the fourth top surface 1431 less than the area of the fourth bottom surface 1433, the assembly difficulty of the third connecting rod arm 142, the fourth connecting rod arm 143 and the second movable seat 141 can be further reduced, and the possibility of self-locking between the third connecting rod arm 142, the fourth connecting rod arm 143 and the second movable seat 141 can be reduced, thereby improving the folding sensitivity of the other side of the rotating shaft mechanism 10.

[0079] Further, please refer to Figure 14 and Figure 15The rotating shaft mechanism 10 further comprises a torsion assembly 106. Specifically, the torsion assembly 106 comprises a pressing member 161 and a second elastic member 162. The pressing member 161 presses the second elastic member 162, so that the second elastic member 162 is compressed and a certain torsion can be generated. In the present application, the pressing member 161 is located on the side of the first connecting rod arm 122 away from the second connecting rod arm 123, and is in cam cooperation with the first connecting rod arm 122. It can be understood that the pressing member 161, the first connecting rod arm 122 and the second connecting rod arm 123 are arranged in sequence. In a possible embodiment, the pressing member 161 has a first cam portion 1610, the first connecting rod arm 122 has a second cam portion 1224, and the first cam portion 1610 is in contact with the second cam portion 1224 to enable the pressing member 161 to be in cam cooperation with the first connecting rod arm 122. The pressing member 161 is used to press the second elastic member 162 during the rotation of the first connecting rod arm 122 relative to the base 101. The second elastic member 162 is located between the side of the pressing member 161 away from the first connecting rod arm 122 and the base 101, and 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 pressing of the pressing member 161. It can be understood that during the rotation of the first connecting rod arm 122 relative to the base 101, the pressing 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 comprise the pressing member 161 and the second elastic member 162, and the pressing member 161 being in cam cooperation with the first connecting rod arm 122, hovering on one side of the rotating shaft mechanism 10 can be achieved. Moreover, the pressing member 161 is moved by the first connecting rod arm 122 to press the second elastic member 162. In addition, the second elastic member 162 is located between the pressing member 161 and the base 101, and is sleeved on the first rotating shaft 120, i.e., the first rotating shaft 120 is used to bear the second elastic member 162, the base 101 is used to limit the sliding of the second elastic member 162, and the first rotating shaft 120 can also be used 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 more converted into the torsion of the rotating shaft mechanism 10, thereby improving the hovering effect of the rotating shaft mechanism 10.

[0081] The torsion assembly 106 further comprises a fourth elastic member 163. The pressing member 161 presses the fourth elastic member 163, so that the fourth elastic member 163 is compressed and a certain torsion can be generated. In the present application, the pressing member 161 is also located on the side of the third connecting rod arm 142 away from the fourth connecting rod arm 143, and is in cam cooperation with the third connecting rod arm 142. It can be understood that the pressing member 161, the third connecting rod arm 142 and the fourth connecting rod arm 143 are arranged in sequence. In a possible embodiment, the pressing member 161 further has a third cam portion 1611, and the third connecting rod arm 142 has a fourth cam portion 1424, the third cam portion 1611 is in contact with the fourth cam portion 1424, so that the pressing member 161 is in cam cooperation with the third connecting rod arm 142. The pressing member 161 is used to press the fourth elastic member 163 during the rotation of the third connecting rod arm 142 relative to the base 101. The fourth elastic member 163 is located between the side of the pressing member 161 away from the third connecting rod arm 142 and the base 101, and 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 pressing of the pressing member 161. It can be understood that during the rotation of the third connecting rod arm 142 relative to the base 101, the pressing 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 comprise the fourth elastic member 163, and the pressing member 161 is in cam cooperation with the third connecting rod arm 142, the hovering on the other side of the rotating shaft mechanism 10 can be realized. By making the pressing member 161 be in cam cooperation with the third connecting rod arm 142, the third connecting rod arm 142 can be used to drive the movement of the pressing member 161, so as to press the fourth elastic member 163. In addition, the fourth elastic member 163 is located between the pressing 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 bear the fourth elastic member 163, the base 101 is used to limit the sliding of the fourth elastic member 163, and at the same time the second rotating shaft 140 can also be used 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 more converted into the torsion of the rotating shaft mechanism 10, thereby the hovering effect of the rotating shaft mechanism 10 can be improved.

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

[0084] In a possible implementation, the first cam portion 1610 can include a plurality of first protrusions and a plurality of first recesses. The first protrusions are arranged adjacent to the first recesses. For example, the first cam portion 1610 can include two first protrusions and two first recesses; or, the first cam portion 1610 can include three first protrusions and three first recesses. The second cam portion 1224 can include a plurality of second protrusions and a plurality of second recesses. The second protrusions are arranged adjacent to the second recesses. For example, the second cam portion 1224 can include two second protrusions and two second recesses; or, the second cam portion 1224 can include three second protrusions and three second recesses. When the rotation shaft mechanism 10 is in the unfolded state, the first protrusions cooperate with the second recesses, and the first recesses cooperate with the second protrusions. When the rotation shaft mechanism 10 is in the folded state, the first protrusions cooperate with the second recesses, and the first recesses cooperate with the second protrusions. When the rotation shaft mechanism 10 is in the hovering state, the first protrusions cooperate with the second protrusions, and the first recesses cooperate with the second recesses. The present embodiment can achieve that in the process that the first connecting arm 122 rotates relative to the base 101 from the unfolded state to the folded state, the extrusion force of the extrusion piece 161 on the second elastic piece 162 first gradually increases and then gradually decreases.

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

[0086] In a possible implementation, the third cam portion 1611 can include a plurality of third protrusions and a plurality of third recesses. The third protrusions are arranged adjacent to the third recesses. For example, the third cam portion 1611 can include two third protrusions and two third recesses; or the third cam portion 1611 can include three third protrusions and three third recesses. The fourth cam portion 1424 can include a plurality of fourth protrusions and a plurality of fourth recesses. The fourth protrusions are arranged adjacent to the fourth recesses. For example, the fourth cam portion 1424 can include two fourth protrusions and two fourth recesses; or the fourth cam portion 1424 can include three fourth protrusions and three fourth recesses. When the rotation shaft mechanism 10 is in the unfolded state, the third protrusions cooperate with the fourth recesses, and the third recesses cooperate with the fourth protrusions. When the rotation shaft mechanism 10 is in the folded state, the third protrusions cooperate with the fourth recesses, and the third recesses cooperate with the fourth protrusions. When the rotation shaft mechanism 10 is in the hovering state, the third protrusions cooperate with the fourth protrusions, and the third recesses cooperate with the fourth recesses. This embodiment can achieve that in the process that the third connecting arm 142 rotates relative to the base 101 from the unfolded state to the folded state, the extrusion force of the extrusion piece 161 on the fourth elastic piece 163 first gradually increases and then gradually decreases.

[0087] In a possible embodiment, the compression force of the first elastic member 103 on the first connecting arm 122 and the compression force of the first elastic member 103 on the second connecting 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 being 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; and for the elastic coefficient of the first elastic member 103 being 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 compression force of the first elastic member 103 on the first connecting arm 122 and the compression force of the first elastic member 103 on the second connecting arm 123 are basically unchanged in the folding process of the rotating shaft mechanism 10, and the elastic force of the second elastic member 162 always changes, the compression force of the first elastic member 103 on the first connecting arm 122 and the compression force of the first elastic member 103 on the second connecting arm 123 being greater than the elastic force of the second elastic member 162 can mean that the compression force of the first elastic member 103 on the first connecting arm 122 and the compression force of the first elastic member 103 on the second connecting arm 123 are greater than the maximum elastic force of the second elastic member 162, or the compression force of the first elastic member 103 on the first connecting arm 122 and the compression force 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 compression force of the first elastic member 103 on the first connecting arm 122 and the compression 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 forced compression 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 forced compression state, so that the friction between the first connecting arm 122 and the first movable seat 121 and the friction between the second connecting arm 123 and the first movable seat 121 can be greatly improved.

[0089] In a possible embodiment, the squeezing force of the third elastic member 105 on the third connecting arm 142 and the squeezing force of the third elastic member 105 on the fourth connecting 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 being 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; and for the elastic coefficient of the third elastic member 105 being 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 force of the third elastic member 105 on the third connecting arm 142 and the squeezing force of the third elastic member 105 on the fourth connecting arm 143 are basically unchanged in the folding process of the rotating shaft mechanism 10, and the elastic force of the fourth elastic member 163 always changes, the squeezing force of the third elastic member 105 on the third connecting arm 142 and the squeezing force of the third elastic member 105 on the fourth connecting arm 143 being greater than the elastic force of the fourth elastic member 163 can mean that the squeezing force of the third elastic member 105 on the third connecting arm 142 and the squeezing force of the third elastic member 105 on the fourth connecting arm 143 are greater than the maximum elastic force of the fourth elastic member 163, or the squeezing force of the third elastic member 105 on the third connecting arm 142 and the squeezing force 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 connecting arm 142 and the squeezing force of the third elastic member 105 on the fourth connecting arm 143 greater than the elastic force of the fourth elastic member 163, the side of the third connecting arm 142 away from the fourth connecting arm 143 and the second movable seat 141 can always be in a force-pressing state, and the side of the fourth connecting arm 143 away from the third connecting arm 142 and the second movable seat 141 can always be in a force-pressing state, so that 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 can be greatly improved.

[0091] As Figure 16As shown, the base 101 comprises a first limiting part 110 and a second limiting part 111 which are arranged in parallel. The first connecting rod arm 122 comprises a first rotating connecting part 1225 and a second rotating connecting part 1226 which are arranged in parallel. The first rotating connecting part 1225 and the second rotating connecting part 1226 are both rotatably connected to the base 101 through the first rotating shaft 120. The first rotating connecting part 1225 is located on the side of the first limiting part 110 which is away from the second limiting part 111 and contacts the first limiting part 110. The second rotating connecting part 1226 is located on the side of the first limiting part 110 which is towards the second limiting part 111 and contacts the first limiting part 110. The second connecting rod arm 123 comprises a third rotating connecting part 1234. The third rotating connecting part 1234 is located on the side of the second limiting part 111 which is towards the first limiting part 110 and contacts the second limiting part 111.

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

[0093] By making the base 101 comprise the first limiting part 110, the first connecting rod arm 122 comprise the first rotating connecting part 1225 and the second rotating connecting part 1226 which are arranged in parallel, the first rotating connecting part 1225 and the second rotating connecting part 1226 are both rotatably connected to the base 101 through the first rotating shaft 120, the first rotating connecting part 1225 is located on the side of the first limiting part 110 which is away from the second limiting part 111 and contacts the first limiting part 110, the second rotating connecting part 1226 is located on the side of the first limiting part 110 which is towards the second limiting part 111 and contacts the first limiting part 110, the sliding of the first connecting rod arm 122 along the axial direction of the first rotating shaft 120 can be further limited, and thus the reliability of the rotatable connection between the first connecting rod arm 122 and the base 101 through the first rotating shaft 120 can be improved. By making the base 101 comprise the second limiting part 111, the second connecting rod arm 123 comprise the third rotating connecting part 1234, the third rotating connecting part 1234 is located on the side of the second limiting part 111 which is towards the first limiting part 110 and contacts the second limiting part 111, the sliding of the second connecting rod arm 123 along the axial direction of the first rotating shaft 120 can be further limited, and thus the reliability of the rotatable connection between the second connecting rod arm 123 and the base 101 through the first rotating shaft 120 can be improved. In addition, the sliding of the first connecting rod arm 122 and the second connecting rod arm 123 along the axial direction of the first rotating shaft 120 can ensure that the distance between the first connecting rod arm 122 and the second connecting rod arm 123 remains unchanged, and thus the reliability of the first elastic member 103 being in a compressed state between the first connecting rod arm 122 and the second connecting rod arm 123 can be improved.

[0094] The base 101 further comprises a third limiting part 113 and a fourth limiting part 114 which are arranged in sequence. The third connecting rod arm 142 comprises a fourth rotating connecting part 1425 and a fifth rotating connecting part 1426 which are arranged in sequence. The fourth rotating connecting part 1425 and the fifth rotating connecting part 1426 are both rotatably connected to the base 101 through the second rotating shaft 140. The fourth rotating connecting part 1425 is located on the side of the third limiting part 113 which is away from the fourth limiting part 114 and contacts the third limiting part 113. The fifth rotating connecting part 1426 is located on the side of the third limiting part 113 which is toward the fourth limiting part 114 and contacts the third limiting part 113. The fourth connecting rod arm 143 comprises a sixth rotating connecting part 1434. The sixth rotating connecting part 1434 is located on the side of the fourth limiting part 114 which is toward the third limiting part 113 and contacts the fourth limiting part 114.

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

[0096] By arranging the base 101 to comprise the third limiting part 113, the third connecting rod arm 142 to comprise the fourth rotating connecting part 1425 and the fifth rotating connecting part 1426 which are arranged in sequence, the fourth rotating connecting part 1425 and the fifth rotating connecting part 1426 to be both rotatably connected to the base 101 through the second rotating shaft 140, the fourth rotating connecting part 1425 to be located on the side of the third limiting part 113 which is away from the fourth limiting part 114 and to contact the third limiting part 113, and the fifth rotating connecting part 1426 to be located on the side of the third limiting part 113 which is toward the fourth limiting part 114 and to contact the third limiting part 113, the sliding of the third connecting rod arm 142 along the axial direction of the second rotating shaft 140 can be further limited, and thus the reliability of the rotatable connection between the third connecting rod arm 142 and the base 101 through the second rotating shaft 140 can be improved. By arranging the base 101 to comprise the fourth limiting part 114 and the fourth connecting rod arm 143 to comprise the sixth rotating connecting part 1434 which is located on the side of the fourth limiting part 114 which is toward the third limiting part 113 and contacts the fourth limiting part 114, the sliding of the fourth connecting rod arm 143 along the axial direction of the second rotating shaft 140 can be further limited, and thus the reliability of the rotatable connection between the fourth connecting rod arm 143 and the base 101 through the second rotating shaft 140 can be improved. In addition, the sliding of the third connecting rod arm 142 and the fourth connecting rod arm 143 along the axial direction of the second rotating shaft 140 can be limited, and thus the distance between the third connecting rod arm 142 and the fourth connecting rod arm 143 can be kept unchanged, and thus the reliability of the third elastic member 105 being in the compressed state between the third connecting rod arm 142 and the fourth connecting rod arm 143 can be improved.

[0097] Further, please refer to Figure 17 and Figure 18The first rotating shaft assembly 102 further comprises a first rotating arm 124 and a first rotating connecting piece 125. The first rotating arm 124 is rotationally connected to the base 101. The first rotating connecting piece 125 is fixedly connected to one of the first rotating arm 124 and the first movable seat 121, and the first rotating connecting piece 125 has a first circular-arc groove 1250. The other one of the first rotating arm 124 and the first movable seat 121 comprises a first circular-arc block 1240, and the first circular-arc groove 1250 wraps the first circular-arc block 1240. The first circular-arc groove 1250 and the first circular-arc block 1240 are relatively rotatable.

[0098] It can be understood that the first rotating arm 124 is rotationally connected to the base 101, and the first rotating arm 124 is rotationally connected to the first movable seat 121 through the cooperation of the first circular-arc groove 1250 and the first circular-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 form a crank slider mechanism, which can realize the water drop shape of the flexible display screen 200 in the folded state, and can also adapt the length change of the rotating shaft mechanism 10 to the length change of the flexible display screen 200, so as to avoid stretching or extruding the flexible display screen 200 in the bending process of the rotating shaft mechanism 10.

[0099] Optionally, the first rotating connecting piece 125 is fixedly connected to the first movable seat 121, and the first rotating arm 124 comprises the first circular-arc block 1240. Alternatively, the first rotating connecting piece 125 is fixedly connected to the first rotating arm 124, and the first movable seat 121 comprises the first circular-arc block 1240. The first rotating connecting piece 125 and one of the first rotating arm 124 and the first movable seat 121 can be integrally connected, or can be detachably or non-detachably connected in a split type. In other words, the first rotating connecting piece 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 circular-arc angle of the first circular-arc groove 1250 can be greater than or equal to 180°. The circular-arc angle of the first circular-arc block 1240 can be greater than or equal to 180°.

[0100] By wrapping the first circular-arc groove 1250 outside the first circular-arc block 1240, the first circular-arc groove 1250 and the first circular-arc block 1240 are relatively rotatable. While realizing the rotational connection of the first rotating arm 124 to the first movable seat 121, the stress between the first rotating connecting piece 125 and the other one of the first rotating arm 124 and the first movable seat 121 is mainly extrusion stress and less shear stress (in the technical solution of connecting through a pin, the main stress of the pin is shear stress) during the falling, impact and other processes of the rotating shaft mechanism 10. Therefore, the reliability of the rotational connection of the first rotating arm 124 to 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 comprises a second rotating arm 144 and a second rotating connecting piece 145. The second rotating arm 144 is rotationally connected to the base 101. The second rotating connecting piece 145 is fixedly connected to one of the second rotating arm 144 and the second movable base 141, and the second rotating connecting piece 145 has a third circular arc groove 1450, and the other one of the second rotating arm 144 and the second movable base 141 comprises a third circular arc block 1440, the third circular arc groove 1450 wraps the third circular arc block 1440, and the third circular arc groove 1450 and the third circular arc block 1440 can relatively rotate.

[0102] It can be understood that the second rotating arm 144 is rotationally connected to the base 101, and the second rotating arm 144 is rotationally connected to the second movable base 141 through the cooperation of the third circular arc groove 1450 and the third circular arc block 1440. The base 101, the third connecting rod arm 142, the fourth connecting rod arm 143, the second movable base 141 and the second rotating arm 144 of the rotating shaft mechanism 10 form a crank slider mechanism, which can realize that the flexible display screen 200 is in a water drop shape when in a folded state, and can also make the length change of the rotating shaft mechanism 10 adapt to the length change of the flexible display screen 200, so that the flexible display screen 200 can be avoided to be stretched or extruded in the bending process of the rotating shaft mechanism 10.

[0103] Optionally, the second rotating connecting piece 145 is fixedly connected to the second movable base 141, and the second rotating arm 144 comprises the third circular arc block 1440; or the second rotating connecting piece 145 is fixedly connected to the second rotating arm 144, and the second movable base 141 comprises the third circular arc block 1440. The second rotating connecting piece 145 and one of the second rotating arm 144 and the second movable base 141 can be integrally connected, or can be detachably or non-detachably connected in a split type. In other words, the second rotating connecting piece 145 and one of the second rotating arm 144 and the second movable base 141 can be integrally formed, or can be respectively formed and then connected together. The circular arc angle of the third circular arc groove 1450 can be greater than or equal to 180°. The circular arc angle of the third circular arc block 1440 can be greater than or equal to 180°.

[0104] By wrapping the third circular arc groove 1450 outside the third circular arc block 1440, the third circular arc groove 1450 and the third circular arc block 1440 can relatively rotate, which can realize that the second rotating arm 144 is rotationally connected to the second movable base 141, and at the same time, since the stress between the second rotating connecting piece 145 and the other one of the second rotating arm 144 and the second movable base 141 is mainly extrusion force and less shear force during the falling, impact and other processes of the rotating shaft mechanism 10, the reliability of the rotation connection between the second rotating arm 144 and the second movable base 141 is increased, and the impact resistance of the rotating shaft mechanism 10 is enhanced.

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

[0106] The first rotating connecting piece 125 and at least one of the first arc blocks 1240 are elastic. Alternatively, the first rotating connecting piece 125 is elastic; or the first rotating connecting piece 125 is elastic at the first arc groove 1250; or the other one of the first rotating arm 124 and the first movable seat 121 is elastic; or the first arc blocks 1240 are elastic. The first rotating connecting piece 125 and at least one of the first arc blocks 1240 being elastic can mean that the first rotating connecting piece 125 and at least one of the first arc blocks 1240 are made of elastic material; or the first rotating connecting piece 125 and at least one of the first arc blocks 1240 include elastic parts that can be deformed. By making the first rotating connecting piece 125 and at least one of the first arc blocks 1240 elastic, the rotating shaft mechanism 10 can be cushioned during falling, impact and other processes, and the impact resistance of the rotating shaft mechanism 10 can be further enhanced.

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

[0108] The second rotating connecting piece 145 is elastic with at least one of the third circular arc blocks 1440. Alternatively, the second rotating connecting piece 145 is elastic; or the third circular arc groove 1450 of the second rotating connecting piece 145 is elastic; or the other one of the second rotating arm 144 and the second movable seat 141 is elastic; or the third circular arc blocks 1440 are elastic. The second rotating connecting piece 145 being elastic with at least one of the third circular arc blocks 1440 can be that the material of at least one of the second rotating connecting piece 145 and the third circular arc blocks 1440 is elastic material; or at least one of the second rotating connecting piece 145 and the third circular arc blocks 1440 comprises an elastic part that can be deformed. By making at least one of the second rotating connecting piece 145 and the third circular arc blocks 1440 elastic, the impact resistance of the rotating shaft mechanism 10 can be further enhanced.

[0109] As shown in Figure 19 The first rotating arm 124 and one of the bases 101 comprise the second circular arc groove 115, and the first rotating arm 124 and the other one of the bases 101 comprise the second circular arc block 1241. The first rotating arm 124 and the base 101 are rotatably connected through cooperation of the second circular arc groove 115 and the second circular arc block 1241.

[0110] Alternatively, the base 101 comprises the second circular arc groove 115, and the first rotating arm 124 comprises the second circular arc block 1241; or the first rotating arm 124 comprises the second circular arc groove 115, and the base 101 comprises the second circular arc block 1241. During rotation of the first rotating arm 124 relative to the base 101, the second circular arc block 1241 moves in conjunction with the second circular arc groove 115.

[0111] Since the first rotating arm 124 and the base 101 are rotatably connected through cooperation of the second circular arc groove 115 and the second circular arc block 1241, the curvature radius of the second circular arc groove 115 and the second circular arc block 1241 can be designed, thereby the rotation center of the first rotating arm 124 can be designed, so that the first rotating arm 124 can move according to the required trajectory. In addition, the rotatable connection of the first rotating arm 124 and the base 101 through cooperation of the second circular arc groove 115 and the second circular arc block 1241 can also improve the reliability of the rotatable connection of the first rotating arm 124 and the base 101.

[0112] The second rotating arm 144 and one of the bases 101 comprise the fourth circular arc groove 116, and the second rotating arm 144 and the other one of the bases 101 comprise the fourth circular arc block 1441. The second rotating arm 144 and the base 101 are rotatably connected through cooperation of the fourth circular arc groove 116 and the fourth circular arc block 1441.

[0113] Optionally, the base 101 comprises a fourth circular-arc groove 116, and the second rotating arm 144 comprises a fourth circular-arc block 1441; or, the second rotating arm 144 comprises the fourth circular-arc groove 116, and the base 101 comprises the fourth circular-arc block 1441. During the rotation of the second rotating arm 144 relative to the base 101, the fourth circular-arc block 1441 moves in conjunction with the fourth circular-arc groove 116.

[0114] Since the second rotating arm 144 is rotatably connected to the base 101 through the cooperation of the fourth circular-arc groove 116 and the fourth circular-arc block 1441, it is beneficial to design the radii of curvature of the fourth circular-arc groove 116 and the fourth circular-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 rotatable connection of the second rotating arm 144 and the base 101 through the cooperation of the fourth circular-arc groove 116 and the fourth circular-arc block 1441 can also improve the reliability of the rotatable connection of the second rotating arm 144 and the base 101.

[0115] Further, please refer to Figures 20 to 22 The shaft mechanism 10 further comprises a synchronizing member 107 arranged between the first connecting rod arm 122, the second connecting rod arm 123, the third connecting rod arm 142 and the fourth connecting rod arm 143. The synchronizing member 107 comprises a first spiral curved surface 171, a second spiral curved surface 172, a third spiral curved surface 173 and a fourth spiral curved surface 174. The first spiral curved surface 171 and the second spiral curved surface 172 are arranged opposite to each other and are in contact with the first connecting rod arm 122 and the second connecting rod arm 123, respectively. The third spiral curved surface 173 and the fourth spiral curved surface 174 are arranged opposite to each other and are in contact with the third connecting rod arm 142 and the fourth connecting rod arm 143, respectively. The synchronizing member 107 is used to drive the first connecting rod arm 122, the second connecting rod arm 123, the third connecting rod arm 142 and the fourth connecting rod arm 143 to rotate synchronously relative to the base 101.

[0116] It can be understood that, in the embodiments of the present application, when the first connecting rod arm 122 and the second connecting rod arm 123 rotate relative to the base 101, the synchronizer 107 can drive the third connecting rod arm 142 and the fourth connecting rod arm 143 to synchronously and reversely rotate relative to the base 101. When the third connecting rod arm 142 and the fourth connecting rod arm 143 rotate relative to the base 101, the synchronizer 107 can drive the first connecting rod arm 122 and the second connecting rod arm 123 to synchronously and reversely rotate relative to the base 101. The first helical curved surface 171 is opposite in direction to the second helical curved surface 172. The third helical curved surface 173 is opposite in direction to the fourth helical curved 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 rod arm 122 and the third rotating connection part 1234 of the second connecting rod 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 rod arm 142 and the sixth rotating connection part 1434 of the fourth connecting rod arm 143, so that the stability of the synchronizer 107 can be improved, and the relative sliding between the first connecting rod arm 122 and the second connecting rod arm 123 can be limited by the synchronizer 107, so as to indirectly improve the reliability of the first elastic member 103 in the compressed state between the first connecting rod arm 122 and the second connecting rod arm 123.

[0117] The first rotating shaft assembly 102 and the first rotating shaft assembly 102 can be synchronously rotated relative to the base 101 through the synchronizer 107. The synchronizer 107 comprises a first spiral curved surface 171, a second spiral curved surface 172, a third spiral curved surface 173 and a fourth spiral curved surface 174. The first spiral curved surface 171 and the second spiral curved surface 172 are arranged opposite to each other and are in contact with the first connecting rod arm 122 and the second connecting rod arm 123 respectively. The third spiral curved surface 173 and the fourth spiral curved surface 174 are arranged opposite to each other and are in contact with the third connecting rod arm 142 and the fourth connecting rod arm 143 respectively. This can reduce the structural design difficulty of the synchronizer 107, reduce the size of the synchronizer 107, improve the structure of the rotating shaft mechanism 10, and thus facilitate the thin and light design of the foldable electronic device 1000. In addition, the synchronizer 107 arranged between the first connecting rod arm 122, the second connecting rod arm 123, the third connecting rod arm 142 and the fourth connecting rod arm 143 can further limit the sliding of the first connecting rod arm 122 and the second connecting rod arm 123 along the axial direction of the first rotating shaft 120, improve the reliability of the first elastic member 103 in the compressed state between the first connecting rod arm 122 and the second connecting rod arm 123, and limit the sliding of the third connecting rod arm 142 and the fourth connecting rod arm 143 along the axial direction of the second rotating shaft 140, improve the reliability of the third elastic member 105 in the compressed state between the third connecting rod arm 142 and the fourth connecting rod arm 143.

[0118] The features mentioned in the specification, claims and drawings can be combined with each other in any way within the scope of the present application. The advantages and features described for the rotating shaft mechanism 10 apply in a corresponding manner to the foldable housing 100 and the foldable electronic device 1000.

[0119] Although the embodiments of the present application have been shown and described above, it should be understood that the above embodiments are exemplary and should not be construed as limiting the present application. Those skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the present application, and these improvements and refinements are also considered as the protection scope of the present application.

Claims

1. A rotating shaft mechanism, characterized in that, include: Base; A first rotating shaft assembly includes a first rotating shaft, a first movable seat, a first connecting arm, and a second connecting arm. The first movable seat is disposed on one side of the base. The first connecting arm and the second connecting arm are disposed between the base and the first movable seat and spaced apart. The first connecting arm is rotatably connected to the base via the first rotating shaft and slidably connected to the first movable seat. The side of the first connecting arm opposite to the second connecting arm is in slidable contact with the first movable seat. The second connecting arm is rotatably connected to the base via the first rotating shaft and slidably connected to the first movable seat. The side of the second connecting arm opposite to the first connecting arm is in slidable contact with the first movable seat. The side of the first connecting arm opposite to the second connecting arm includes a first side surface. The first connecting arm also includes a first top surface and a first bottom surface facing opposite to the first top surface. The first top surface, the first side surface, and the first connecting arm are... The bottom surfaces are connected in sequence. The second link arm includes a second side surface on the side opposite to the first link arm. The second link arm also includes a second top surface and a second bottom surface facing the opposite direction 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 that are spaced apart. The first sliding connection part includes a first sliding connection surface, a second sliding connection surface, and a third sliding connection surface that are 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 that are connected in sequence. The first top surface slides in contact with the first sliding connection surface. The first side surface slides in contact with the second sliding connection surface. The first bottom surface slides in contact with the third sliding connection surface. The second top surface slides in contact with the fourth sliding connection surface. The second side surface slides in contact with the fifth sliding connection surface. The second bottom surface slides in contact with the sixth sliding connection surface. and A first elastic element, in a compressed state, is located between the first link arm and the second link arm, for pressing the first link arm toward the side opposite to the second link arm, and pressing the second link arm toward the side opposite to the first link arm.

2. The rotating shaft mechanism according to claim 1, characterized in that, The first link arm has a first support connection part on the side facing the second link arm, and the second link arm has a second support connection part on the side facing the first link arm. One end of the first elastic member is sleeved on the first support connection part, and the other end is sleeved on the second support connection part.

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

4. The rotating shaft mechanism according to claim 1, characterized in that, The rotating shaft mechanism further includes a torque assembly, which includes a pressing member and a second elastic member. The pressing member is located on the side of the first connecting arm away from the second connecting arm and cooperates with the cam of the first connecting arm. The pressing member is used to press the second elastic member during the rotation of the first connecting arm relative to the base. The second elastic member is located between the side of the pressing member away from the first connecting arm and the base, and the second elastic member is sleeved on the first rotating shaft. The second elastic member is used to deform along the axial direction of the first rotating shaft under the pressing of the pressing member.

5. The rotating shaft mechanism according to claim 4, characterized in that, During the process of the first connecting arm rotating from a flattened state to a folded state relative to the base, the pressing force of the pressing member on the second elastic member first gradually increases and then gradually decreases.

6. The rotating shaft mechanism according to claim 4, characterized in that, The compressive force of the first elastic element on the first link arm and the compressive force of the first elastic element on the second link arm are greater than the elastic force of the second elastic element.

7. The rotating shaft mechanism according to claim 1, characterized in that, The base includes a first limiting part and a second limiting part spaced apart. The first linkage arm includes a first rotating connecting part and a second rotating connecting part spaced apart. Both the first rotating connecting part and the second rotating connecting part are rotatably connected to the base through the first rotating shaft. The first rotating connecting part is located on the side of the first limiting part away from the second limiting part and contacts the first limiting part. The second rotating connecting part is located on the side of the first limiting part facing the second limiting part and contacts the first limiting part. The second linkage arm includes a third rotating connecting part, which is located on the side of the second limiting part facing the first limiting part and contacts the second limiting part.

8. The rotating shaft mechanism according to any one of claims 1 to 7, characterized in that, The first rotating shaft assembly further includes a first rotating arm and a first rotating connector. The first rotating arm is rotatably connected to the base, and the first rotating connector is fixedly connected to one of the first rotating arm and the first movable seat. The first rotating connector 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 around the first arc block, and relative rotation can occur between the first arc groove and the first arc block.

9. The rotating shaft mechanism according to claim 8, characterized in that, The first rotating connector is integrally formed with one of the first rotating arm and the first movable seat; at least one of the first rotating connector and the first arc block is elastic.

10. The rotating shaft mechanism according to claim 8, characterized in that, One of the first rotating arm and the base includes a second arc groove, and the other of the first rotating arm and the base includes a second arc block. The first rotating arm and the base are rotatably connected by the cooperation of the second arc groove and the second arc block.

11. The rotating shaft mechanism according to any one of claims 1 to 7, characterized in that, The rotating shaft mechanism further includes a second rotating shaft assembly, which comprises a second rotating shaft, a second movable seat, a third connecting arm, a fourth connecting arm, a second elastic element, a second rotating arm, and a second rotating connector. The second movable seat is located on the other side of the base. The third link arm and the fourth link arm are located between the base and the second movable seat and spaced apart. The third link arm is rotatably connected to the base via the second pivot and is slidably connected to the second movable seat. The side of the third link arm away from the fourth link arm is in slidable contact with the second movable seat. The fourth link arm is rotatably connected to the base via the second pivot and is slidably connected to the second movable seat. The side of the fourth link arm away from the third link arm is in slidable contact with the second movable seat. The second elastic member is in a compressed state between the third link arm and the fourth link arm, used to press the third link arm toward the side away from the fourth link arm and to press the fourth link arm toward the side away from the third link arm. The second rotating arm is rotatably connected to the base, and the second rotating connector is fixedly connected to one of the second rotating arm and the second movable seat. The second rotating connector has a third arc groove, and the other of the second rotating arm and the second movable seat includes a third arc block. The third arc groove is wrapped around the third arc block, and relative rotation can occur between the third arc groove and the third arc block.

12. The rotating shaft mechanism according to claim 11, characterized in that, The rotating shaft mechanism further includes a synchronizing element disposed between the first link arm, the second link arm, the third link arm, and the fourth link arm. The synchronizing element includes a first helical surface, a second helical surface, a third helical surface, and a fourth helical surface. The first helical surface and the second helical surface are disposed opposite to each other and respectively contact and cooperate with the first link arm and the second link arm. The third helical surface and the fourth helical surface are disposed opposite to each other and respectively contact and cooperate with the third link arm and the fourth link arm. The synchronizing element 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.

13. A foldable shell, characterized in that, The device includes a first housing, a second housing, and a pivot mechanism as described in any one of claims 1 to 12. The first housing is disposed on one side of the pivot mechanism, and the second housing is disposed on the other side of the pivot mechanism. The first housing and the second housing are capable of moving toward each other to fold, or the first housing and the second housing are capable of moving away from each other to unfold.

14. A foldable electronic device, characterized in that, The invention includes a flexible display screen and the foldable housing as described in claim 13. The flexible display screen includes a first non-bending display area, a bending display area, and a second non-bending display area arranged sequentially. The first non-bending display area covers the first housing, the bending display area covers the pivot mechanism, and the second non-bending display area covers the second housing.

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