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 movable seat, a first rotating arm, a second rotating arm, a first elastic member and a second elastic member. The first rotating arm is rotationally connected with the first movable seat through a first rotating connecting part, and rotationally connected with the base through a second rotating connecting part. The second rotating arm is rotationally connected with the first movable seat through a third rotating connecting part, and rotationally connected with the base through a fourth rotating connecting part. The first elastic member is arranged between the first rotating connecting part and the third rotating connecting part in a compressed state, and the second elastic member is arranged between the second rotating connecting part and the fourth rotating connecting part in a compressed state. The first elastic member and the second elastic member are used for pressing the first rotating arm to a side away from the second rotating arm, so that a certain friction force can be generated between the first rotating arm and the first movable seat and the base. The rotating shaft mechanism, the foldable shell and the foldable electronic device provided by the application can generate a torsion force to realize hovering.

Description

Technical Field

[0001] This application relates to the field of electronic technology, specifically to a pivot mechanism, a foldable housing, and a foldable electronic device. Background Technology

[0002] With the technological development of foldable electronic devices, how to achieve hovering of foldable electronic devices has become a technical problem that needs to be solved. Summary of the Invention

[0003] This application provides a pivot mechanism capable of generating torque to achieve hovering, a foldable housing, and a foldable electronic device.

[0004] On the one hand, this application provides a rotating shaft mechanism, including:

[0005] The base includes the first friction surface;

[0006] A first rotating shaft assembly includes a first movable seat, a first rotating arm, and a second rotating arm. The first movable seat is disposed on one side of the base and includes a second friction surface facing the same direction as the first friction surface. The first rotating arm and the second rotating arm are disposed between the base and the first movable seat and spaced apart. The first rotating arm includes a first rotating connecting portion and a second rotating connecting portion connected together. The first rotating connecting portion is rotatably connected to the first movable seat, and the second rotating connecting portion is rotatably connected to the base. The side of the first rotating connecting portion facing away from the second rotating arm includes a third friction surface, and the side of the second rotating connecting portion facing away from the second rotating arm includes a fourth friction surface. The second rotating arm includes a third rotating connecting portion and a fourth rotating connecting portion connected together. The third rotating connecting portion is rotatably connected to the first movable seat, and the fourth rotating connecting portion is rotatably connected to the base.

[0007] The first elastic component includes a first elastic member and a second elastic member. The first elastic member is in a compressed state between the first rotating connection portion and the third rotating connection portion. The second elastic member is in a compressed state between the second rotating connection portion and the fourth rotating connection portion. The first elastic member and the second elastic member are used to press the first rotating arm away from the second rotating arm so that the third friction surface abuts against the second friction surface and the fourth friction surface abuts against the first friction surface.

[0008] On the other hand, this application also provides a foldable housing, including a first housing, a second housing, and the aforementioned pivot mechanism. The first housing is disposed on one side of the pivot mechanism and connects the first link arm and the second link arm. The first housing can drive the first link arm and the second link arm to rotate relative to the base. The second housing is disposed on the other side of the pivot mechanism. The second housing can move towards the first housing to fold, or move away from the first housing to unfold.

[0009] In another aspect, this application also provides a foldable electronic device, including a flexible display screen and the aforementioned foldable housing. The flexible display screen covers the first housing, the pivot mechanism, and the second housing. 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 is fixedly connected to the first housing, and the second non-bending display area is fixedly connected to the second housing.

[0010] In the rotating shaft mechanism provided in this application, a first rotating arm and a second rotating arm are disposed between the base and the first movable seat and spaced apart. The first rotating connecting part of the first rotating arm is rotatably connected to the first movable seat, the second rotating connecting part is rotatably connected to the base, the third rotating connecting part of the second rotating arm is rotatably connected to the first movable seat, and the fourth rotating connecting part is rotatably connected to the base. A first elastic member is in a compressed state between the first rotating connecting part and the third rotating connecting part, and a second elastic member is in a compressed state between the second rotating connecting part and the fourth rotating connecting part. The first and second elastic members are used to press the first rotating arm away from the second rotating arm, so that the third friction surface of the first rotating arm abuts against the second friction surface of the first movable seat, and the fourth friction surface of the first rotating arm abuts against the first friction surface of the base. Therefore, under the action of the first and second elastic members, the first rotating arm and the first movable seat, as well as the first rotating arm and the base, can be in close contact. Thus, frictional force is generated during the relative rotation between the first rotating arm and the first movable seat, and between the first rotating arm and the base. The generated frictional force is relatively large, which can make the rotating shaft mechanism have a large torque and realize the suspension of one side of the rotating shaft mechanism. Attached Figure Description

[0011] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly described below.

[0012] Figure 1 A side view of the foldable electronic device provided in this application embodiment when it is in a flattened state;

[0013] Figure 2 A side view of the foldable electronic device provided in this application embodiment when it is in a folded state;

[0014] Figure 3 A side view of the foldable electronic device provided in this application when it is in a hovering state;

[0015] Figure 4 for Figure 1 A side view of the foldable housing in the foldable electronic device shown.

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

[0017] Figure 6 for Figure 5 The diagram shows a side view of the flexible display screen, which has a teardrop shape.

[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 for Figure 7 The diagram shows an exploded view of the rotating shaft mechanism.

[0020] Figure 9 for Figure 7 A magnified view of a portion of region A shown below;

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

[0022] Figure 11 for Figure 10 The diagram shows an exploded view of the rotating shaft mechanism.

[0023] Figure 12 for Figure 10 A magnified view of a portion of region B is shown below;

[0024] Figure 13 for Figure 10 A schematic diagram of the centerlines of each axis of the rotating shaft mechanism shown.

[0025] Figure 14 for Figure 10 A schematic diagram of the structure of the first and second rotating arms of the rotating shaft mechanism shown.

[0026] Figure 15 for Figure 10 A schematic diagram of the structure of the third and fourth rotating arms of the rotating shaft mechanism shown;

[0027] Figure 16 for Figure 10 A partially exploded schematic diagram of the rotating shaft mechanism shown.

[0028] Figure 17 for Figure 16 A partial structural exploded view of the rotating shaft mechanism shown from another perspective.

[0029] Figure 18 for Figure 10 A schematic diagram of the structure of the first rotating shaft assembly of the rotating shaft mechanism shown;

[0030] Figure 19 for Figure 18 An exploded view of the structure of the first link arm of the rotating shaft mechanism shown.

[0031] Figure 20 for Figure 10 The schematic diagram shown also includes a synchronizing element in the rotating shaft mechanism.

[0032] Figure 21 for Figure 20 The diagram shows an exploded view of the synchronizing element of the rotating shaft mechanism.

[0033] Explanation of reference numerals in the attached figures:

[0034] Foldable electronic device 1000; flexible display screen 200; foldable housing 100; first housing 11; second housing 12; pivot mechanism 10; 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; base 101; first pivot assembly 102; first elastic component 103; first movable seat 121; first rotating arm 122; second rotating arm 123; first elastic element 130; second elastic element 131; first friction surface 110; second friction surface 1210; first rotating connection part 1 220; Second rotating connection 1221; Third rotating connection 1230; Fourth rotating connection 1231; Third friction surface 122a; Fourth friction surface 122b; Fifth friction surface 111; Sixth friction surface 1211; Seventh friction surface 123a; Eighth friction surface 123b; Second rotating shaft assembly 104; Second elastic assembly 105; Second movable seat 141; Third rotating arm 142; Fourth rotating arm 143; Third elastic element 150; Fourth elastic element 151; Ninth friction surface 112; Tenth friction surface 1410; Fifth rotating connection 1420; Sixth rotating connection 1421; Seventh rotating connection 1 430; Eighth rotating connecting part 1431; Eleventh friction surface 142a; Twelfth friction surface 142b; Thirteenth friction surface 113; Fourteenth friction surface 1411; Fifteenth friction surface 143a; Sixteenth friction surface 143b; First support connecting part 1222; Second support connecting part 1232; Third support connecting part 1223; Fourth support connecting part 1233; Fifth support connecting part 1422; Sixth support connecting part 1432; Seventh support connecting part 1423; Eighth support connecting part 1433; First body 1224; First connecting shaft 1225; First shaft hole 1212; Second body 1234; Second connecting shaft 1235; second shaft hole 1213; third body 1424; third connecting shaft 1425; third shaft hole 1412; fourth body 1434; fourth connecting shaft 1435; fourth shaft hole 1413; first rotating shaft 120; first connecting arm 124; second connecting arm 125; fifth elastic element 106; ninth support connection 1240; tenth support connection 1250; second rotating shaft 140; third connecting arm 144; fourth connecting arm 145; sixth elastic element 107; synchronizing element 108; first helical surface 181; second helical surface 182; third helical surface 183; fourth helical surface 184. Detailed Implementation

[0035] 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.

[0036] In this application, references to "embodiment" or "implementation" mean that a specific feature, structure, or characteristic described in connection with an embodiment or implementation may 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 understand, explicitly and implicitly, that the embodiments described in this application can be combined with other embodiments. The terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish different objects, not to describe a specific order; furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0037] 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.

[0038] The foldable electronic device 1000 includes a flexible display screen 200 and a foldable housing 100. It can be understood that when the foldable electronic device 1000 is in a 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.

[0039] like Figure 4 As shown, Figure 4 for Figure 1The 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 flat 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 flat state, the first housing 11 gradually rotates in the counterclockwise direction and the second housing 12 gradually rotates in the clockwise direction.

[0040] It can be understood that when the foldable shell 100 is in a flattened state, the rotating shaft mechanism 10 is also in a flattened state; when the foldable shell 100 is in a folded state, the rotating shaft mechanism 10 is also in a folded state; and when the foldable shell 100 is in a hovering state, the rotating shaft mechanism 10 is also in a hovering state. Specifically, the foldable shell 100 being in a flattened state can be understood as having an angle of 180° between the first shell 11 and the second shell 12, allowing for a certain degree of error, such as within 5°. The foldable shell 100 being in a folded state can be understood as having an angle of 0° between the first shell 11 and the second shell 12, allowing for a certain degree of error, such as within 5°. The foldable shell 100 being in a hovering state can be understood as having an angle between the first shell 11 and the second shell 12 that is any angle between 0° and 180°.

[0041] Please refer to Figure 4 and Figure 5The 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. The flexible display screen 200 can be a flexible organic light-emitting diode (OLED) display screen. The first non-bending display area 21 of the flexible display screen 200 can be fixedly connected to the first housing 11, and 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 may be partially or not connected to the rotating shaft mechanism 10. The bending display area 22 is flat when the flexible display screen 200 is in a flattened state, and the bending display area 22 is bent when the flexible display screen 200 is in a folded state.

[0042] 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.

[0043] 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 8 for Figure 7 The diagram shows an exploded view of the rotating shaft mechanism 10. The rotating shaft mechanism 10 includes a base 101, a first rotating shaft assembly 102, and a first elastic component 103. The first rotating shaft assembly 102 includes a first movable seat 121, a first rotating arm 122, and a second rotating arm 123. The first elastic component 103 includes a first elastic element 130 and a second elastic element 131. The base 101 remains stationary when the rotating shaft mechanism 10 switches between a flattened state, a suspended state, and a folded state. The base 101 includes a first friction surface 110. The first friction surface 110 faces the side where the first rotating arm 122 and the second rotating arm 123 are located. The first friction surface 110 can be a plane or a curved surface.

[0044] The first movable seat 121 is disposed on one side of the base 101. The first movable seat 121 can be directly or indirectly fixedly connected to the first housing 11. The first movable seat 121 includes a second friction surface 1210 facing the same direction as the first friction surface 110. It can be understood that the second friction surface 1210 faces the first rotating arm 122 and the second rotating arm 123. The second friction surface 1210 can be a plane or a curved surface.

[0045] The first rotating arm 122 and the second rotating arm 123 are disposed between the base 101 and the first movable seat 121 and are spaced apart. This application does not specify the specific distance between the first rotating arm 122 and the second rotating arm 123. The first rotating arm 122 includes a first rotating connecting part 1220 and a second rotating connecting part 1221 connected together. The connection between the first rotating connecting part 1220 and the second rotating connecting part 1221 can be an integral connection. The first rotating connecting part 1220 is rotatably connected to the first movable seat 121. Optionally, the first rotating connecting part 1220 and the first movable seat 121 are rotatably connected through the cooperation of a rotating shaft and a shaft hole; or, the first rotating connecting part 1220 and the first movable seat 121 are rotatably connected through the connection of a pin; or, the first rotating connecting part 1220 and the first movable seat 121 are rotatably connected through the cooperation of an arc groove and an arc block. The second rotating connecting part 1221 is rotatably connected to the base 101. Optionally, the second rotating connecting part 1221 is rotatably connected to the base 101 through the cooperation of a rotating shaft and a shaft hole; or, the second rotating connecting part 1221 is rotatably connected to the base 101 through the connection of a pin; or, the second rotating connecting part 1221 is rotatably connected to the base 101 through the cooperation of an arc groove and an arc block. The second rotating arm 123 includes a connected third rotating connecting part 1230 and a fourth rotating connecting part 1231. The connection between the third rotating connecting part 1230 and the fourth rotating connecting part 1231 can be an integral connection. The third rotating connecting part 1230 is rotatably connected to the first movable seat 121. Optionally, the third rotary connecting part 1230 and the first movable seat 121 are rotatably connected by a rotating shaft and a shaft hole; or, the third rotary connecting part 1230 and the first movable seat 121 are rotatably connected by a pin; or, the third rotary connecting part 1230 and the first movable seat 121 are rotatably connected by an arc groove and an arc block. The fourth rotary connecting part 1231 is rotatably connected to the base 101. Optionally, the fourth rotary connecting part 1231 and the base 101 are rotatably connected by a rotating shaft and a shaft hole; or, the fourth rotary connecting part 1231 and the base 101 are rotatably connected by a pin; or, the fourth rotary connecting part 1231 and the base 101 are rotatably connected by an arc groove and an arc block. In the following embodiments, the second rotating connecting part 1221 and the base 101 are rotatably connected through the cooperation of an arc groove and an arc block, and the fourth rotating connecting part 1231 and the base 101 are rotatably connected through the cooperation of an arc groove and an arc block.

[0046] During the relative rotation of the first rotating arm 122 and the first movable seat 121, the first rotating arm 122 rotates relative to the base 101. Similarly, during the relative rotation of the second rotating arm 123 and the first movable seat 121, the second rotating arm 123 rotates relative to the base 101. The first rotating arm 122 and the second rotating arm 123 rotate synchronously. It can be understood that the processes of relative rotation of the first rotating arm 122 and the first movable seat 121, and the rotation of the first rotating arm 122 relative to the base 101, as well as the processes of relative rotation of the second rotating arm 123 and the second rotating arm 123 relative to the base 101, are all processes of change in the state of one side of the rotating shaft mechanism 10, that is, the process of one side of the rotating shaft mechanism 10 switching between a flattened state, a folded state, and a suspended state.

[0047] The first rotating connecting portion 1220 includes a third friction surface 122a on the side opposite to the second rotating arm 123. The third friction surface 122a can be a plane or a curved surface. The orientation of the third friction surface 122a is opposite to that of the second friction surface 1210. It is understood that the third friction surface 122a and the second friction surface 1210 are arranged opposite to each other. The second rotating connecting portion 1221 includes a fourth friction surface 122b on the side opposite to the second rotating arm 123. The fourth friction surface 122b can be a plane or a curved surface. The orientation of the fourth friction surface 122b is opposite to that of the first friction surface 110. It is understood that the fourth friction surface 122b and the first friction surface 110 are arranged opposite to each other.

[0048] The first elastic element 130 can be a spring, a bellows, etc. The second elastic element 131 can be a spring, a bellows, etc. In the embodiments of this application, both the first elastic element 130 and the second elastic element 131 are springs. The first elastic element 130 is in a compressed state between the first rotating connecting portion 1220 and the third rotating connecting portion 1230. It can be understood that the first elastic element 130 is always in a compressed state. One end of the first elastic element 130 can abut against the side of the first rotating connecting portion 1220 facing the second rotating arm 123, and the other end of the first elastic element 130 can abut against the side of the third rotating connecting portion 1230 facing the first rotating arm 122. In the embodiments of this application, the first elastic element 130 can directly compress the first rotating connecting portion 1220. Of course, in other embodiments, the first elastic element 130 can also indirectly compress the first rotating connecting portion 1220 through an intermediate structure such as a gasket. The second elastic element 131 is in a compressed state between the second rotating connecting portion 1221 and the fourth rotating connecting portion 1231. It is understood that the second elastic member 131 is always in a compressed state. One end of the second elastic member 131 can abut against the side of the second rotating connection portion 1221 facing the second rotating arm 123, and the other end of the second elastic member 131 can abut against the side of the fourth rotating connection portion 1231 facing the first rotating arm 122. In this embodiment, the second elastic member 131 can directly compress the second rotating connection portion 1221. Of course, in other embodiments, the second elastic member 131 can also indirectly compress the second rotating connection portion 1221 through an intermediate structure such as a gasket.

[0049] The first elastic member 130 and the second elastic member 131 are used to press the first rotating arm 122 toward the side opposite to the second rotating arm 123, so that the third friction surface 122a abuts against the second friction surface 1210 and the fourth friction surface 122b abuts against the first friction surface 110. In one possible embodiment, the third friction surface 122a contacts the second friction surface 1210, and the fourth friction surface 122b contacts the first friction surface 110b. The first elastic member 130 and the second elastic member 131 are used to press the first rotating arm 122 away from the second rotating arm 123, so that the third friction surface 122a abuts against the second friction surface 1210 and the fourth friction surface 122b abuts against the first friction surface 110. It can be understood that the first elastic member 130 and the second elastic member 131 are used to press the first rotating arm 122 away from the second rotating arm 123, so as to increase the pressing force between the third friction surface 122a and the second friction surface 1210, and to increase the pressing force between the fourth friction surface 122b and the first friction surface 110. In another possible embodiment, there is a gap between the third friction surface 122a and the second friction surface 1210, and a gap between the fourth friction surface 122b and the first friction surface 110. The first elastic member 130 and the second elastic member 131 are used to press the first rotating arm 122 away from the second rotating arm 123, so that the third friction surface 122a abuts against the second friction surface 1210 and the fourth friction surface 122b abuts against the first friction surface 110. It can be understood that the first elastic member 130 and the second elastic member 131 are used to press the first rotating arm 122 away from the second rotating arm 123, so that the third friction surface 122a contacts the second friction surface 1210 and the fourth friction surface 122b contacts the first friction surface 110.

[0050] In the rotating shaft mechanism 10 provided in this application, the first rotating arm 122 and the second rotating arm 123 are disposed between the base 101 and the first movable seat 121 and are spaced apart. The first rotating connecting part 1220 of the first rotating arm 122 is rotatably connected to the first movable seat 121, and the second rotating connecting part 1221 is rotatably connected to the base 101. The third rotating connecting part 1230 of the second rotating arm 123 is rotatably connected to the first movable seat 121, and the fourth rotating connecting part 1231 is rotatably connected to the base 101. The first elastic member 130 is in a compressed state between the first rotating connecting part 1220 and the third rotating connecting part 1230, and the second elastic member 131 is in a compressed state between the second rotating connecting part 1221 and the fourth rotating connecting part 1231. The first elastic member 130 and the second elastic member 131 are used for back-and-forth... The first rotating arm 122 is pressed against the side away from the second rotating arm 123, so that the third friction surface 122a of the first rotating arm 122 abuts against the second friction surface 1210 of the first movable seat 121, and the fourth friction surface 122b of the first rotating arm 122 abuts against the first friction surface 110 of the base 101. Therefore, under the action of the first elastic element 130 and the second elastic element 131, the first rotating arm 122 and the first movable seat 121 and the first rotating arm 122 and the base 101 can be in close contact. Thus, friction is generated during the relative rotation between the first rotating arm 122 and the first movable seat 121 and between the first rotating arm 122 and the base 101. The friction generated is relatively large, which can make the rotating shaft mechanism 10 have a large torque and realize the suspension of one side of the rotating shaft mechanism 10.

[0051] Furthermore, such as Figure 9 As shown, Figure 9 for Figure 7 The diagram shows a partially enlarged view of region A. The base 101 also includes a fifth friction surface 111 facing away from the first friction surface 110. The first friction surface 110 and the fifth friction surface 111 are opposite to each other and spaced apart. The fifth friction surface 111 faces the side where the first rotating arm 122 and the second rotating arm 123 are located. The fifth friction surface 111 can be a plane or a curved surface.

[0052] The first movable seat 121 also includes a sixth friction surface 1211 facing opposite to the second friction surface 1210. The sixth friction surface 1211 is opposite to and spaced apart from the second friction surface 1210. The sixth friction surface 1211 faces the side where the first rotating arm 122 and the second rotating arm 123 are located. The sixth friction surface 1211 can be a plane or a curved surface.

[0053] The third rotating connecting portion 1230 includes a seventh friction surface 123a on the side opposite to the first rotating arm 122. The seventh friction surface 123a can be a plane or a curved surface. The orientation of the seventh friction surface 123a is opposite to that of the sixth friction surface 1211. It can be understood that the seventh friction surface 123a and the sixth friction surface 1211 are arranged opposite to each other. The fourth rotating connecting portion 1231 includes an eighth friction surface 123b on the side opposite to the first rotating arm. The eighth friction surface 123b can be a plane or a curved surface. The orientation of the eighth friction surface 123b is opposite to that of the fifth friction surface 111. It can be understood that the eighth friction surface 123b and the fifth friction surface 111 are arranged opposite to each other.

[0054] The first elastic element 130 and the second elastic element 131 are also used to press the second rotating arm 123 toward the side opposite to the first rotating arm 122, so that the seventh friction surface 123a abuts against the sixth friction surface 1211 and the eighth friction surface 123b abuts against the fifth friction surface 111. In one possible embodiment, the seventh friction surface 123a contacts the sixth friction surface 1211, and the eighth friction surface 123b contacts the fifth friction surface 111. The first elastic member 130 and the second elastic member 131 are used to press the second rotating arm 123 away from the first rotating arm 122, so that the seventh friction surface 123a abuts against the sixth friction surface 1211 and the eighth friction surface 123b abuts against the fifth friction surface 111. It can be understood that the first elastic member 130 and the second elastic member 131 are used to press the second rotating arm 123 away from the first rotating arm 122 to increase the pressing force between the seventh friction surface 123a and the sixth friction surface 1211, and to increase the pressing force between the eighth friction surface 123b and the fifth friction surface 111. In another possible embodiment, there is a gap between the seventh friction surface 123a and the sixth friction surface 1211, and a gap between the eighth friction surface 123b and the fifth friction surface 111. The first elastic member 130 and the second elastic member 131 are used to press the second rotating arm 123 away from the first rotating arm 122, so that the seventh friction surface 123a abuts against the sixth friction surface 1211 and the eighth friction surface 123b abuts against the fifth friction surface 111. It can be understood that the first elastic member 130 and the second elastic member 131 are used to press the first rotating arm 122 away from the second rotating arm 123, so that the seventh friction surface 123a contacts the sixth friction surface 1211 and the eighth friction surface 123b contacts the fifth friction surface 111.

[0055] In this embodiment, the first elastic element 130 and the second elastic element 131 can compress the first rotating arm 122 and the second rotating arm 123, so that the third friction surface 122a abuts against the second friction surface 1210, the fourth friction surface 122b abuts against the first friction surface 110, the seventh friction surface 123a abuts against the sixth friction surface 1211, and the eighth friction surface 123b abuts against the fifth friction surface 111. The number of friction surfaces of the rotating shaft mechanism 10 is increased, and the torque can be further increased without increasing the number of parts, thereby improving the hovering effect.

[0056] This application incorporates a first elastic element 130 and a second elastic element 131 between the first rotating arm 122 and the second rotating arm 123 of the pivot mechanism 10 to generate torque and achieve suspension. This improves the structural compactness of the pivot mechanism 10, reduces the space occupied, and facilitates the miniaturization of the foldable electronic device 1000. Furthermore, the forces exerted by the first elastic element 130 and the second elastic element 131 primarily act on the base 101, with relatively small forces on the first housing 11 and the second housing 12. This ensures that the first housing 11 and the second housing 12 provide good planar support for the flexible display screen 200, which helps reduce creases that occur during the use of the flexible display screen 200.

[0057] Please refer to Figure 10 and Figure 11 , Figure 10 This is a schematic diagram of the rotating shaft mechanism 10 provided in the embodiments of this application when it is in a flattened state. Figure 11 for Figure 10 The diagram shows an exploded view of the rotating shaft mechanism 10. The rotating shaft mechanism 10 also includes a second rotating shaft assembly 104 and a second elastic assembly 105. The second rotating shaft assembly 104 includes a second movable seat 141, a third rotating arm 142, and a fourth rotating arm 143. The second elastic assembly 105 includes a third elastic element 150 and a fourth elastic element 151. The base 101 also includes a ninth friction surface 112. The ninth friction surface 112 faces the side where the third rotating arm 142 and the fourth rotating arm 143 are located. The ninth friction surface 112 can be a plane or a curved surface.

[0058] The second movable seat 141 is located on one side of the base 101. The second movable seat 141 can be directly or indirectly fixedly connected to the second housing 12. The second movable seat 141 includes a tenth friction surface 1410 facing the same direction as the ninth friction surface 112. It can be understood that the tenth friction surface 1410 faces the third rotating arm 142 and the fourth rotating arm 143. The tenth friction surface 1410 can be a plane or a curved surface.

[0059] The third rotating arm 142 and the fourth rotating arm 143 are disposed between the base 101 and the second movable seat 141 and are spaced apart. This application does not specify the specific distance between the third rotating arm 142 and the fourth rotating arm 143. The third rotating arm 142 includes a connected fifth rotating connecting part 1420 and a sixth rotating connecting part 1421. The connection between the fifth rotating connecting part 1420 and the sixth rotating connecting part 1421 can be an integral connection. The fifth rotating connecting part 1420 is rotatably connected to the second movable seat 141. Optionally, the fifth rotating connecting part 1420 and the second movable seat 141 are rotatably connected through the cooperation of a rotating shaft and a shaft hole; or, the fifth rotating connecting part 1420 and the second movable seat 141 are rotatably connected through the connection of a pin; or, the fifth rotating connecting part 1420 and the second movable seat 141 are rotatably connected through the cooperation of an arc groove and an arc block. The sixth rotating connecting part 1421 is rotatably connected to the base 101. Optionally, the sixth rotating connecting part 1421 is rotatably connected to the base 101 via a shaft and a hole; or, the sixth rotating connecting part 1421 is rotatably connected to the base 101 via a pin; or, the sixth rotating connecting part 1421 is rotatably connected to the base 101 via an arc groove and a block. The fourth rotating arm 143 includes a connected seventh rotating connecting part 1430 and an eighth rotating connecting part 1431. The connection between the seventh rotating connecting part 1430 and the eighth rotating connecting part 1431 can be an integral connection. The seventh rotating connecting part 1430 is rotatably connected to the second movable seat 141. Optionally, the seventh rotary connecting part 1430 and the second movable seat 141 are rotatably connected by a rotating shaft and a shaft hole; or, the seventh rotary connecting part 1430 and the second movable seat 141 are rotatably connected by a pin; or, the seventh rotary connecting part 1430 and the second movable seat 141 are rotatably connected by an arc groove and an arc block. The eighth rotary connecting part 1431 is rotatably connected to the base 101. Optionally, the eighth rotary connecting part 1431 and the base 101 are rotatably connected by a rotating shaft and a shaft hole; or, the eighth rotary connecting part 1431 and the base 101 are rotatably connected by a pin; or, the eighth rotary connecting part 1431 and the base 101 are rotatably connected by an arc groove and an arc block. In the following embodiments, the sixth rotating connecting part 1421 is rotatably connected to the base 101 through the cooperation of an arc groove and an arc block, and the eighth rotating connecting part 1431 is rotatably connected to the base 101 through the cooperation of an arc groove and an arc block.

[0060] During the relative rotation of the third rotating arm 142 and the second movable seat 141, the third rotating arm 142 rotates relative to the base 101. During the relative rotation of the fourth rotating arm 143 and the second movable seat 141, the fourth rotating arm 143 rotates relative to the base 101. The third rotating arm 142 and the fourth rotating arm 143 rotate synchronously. It can be understood that the processes of relative rotation of the third rotating arm 142 and the second movable seat 141, and the rotation of the third rotating arm 142 relative to the base 101, as well as the processes of relative rotation of the fourth rotating arm 143 and the fourth rotating arm 143 relative to the base 101, are all processes of change in the state of one side of the rotating shaft mechanism 10, that is, the process of one side of the rotating shaft mechanism 10 switching between a flattened state, a folded state, and a suspended state.

[0061] The fifth rotating connection 1420 includes an eleventh friction surface 142a on the side opposite to the fourth rotating arm 143. The eleventh friction surface 142a can be a plane or a curved surface. The orientation of the eleventh friction surface 142a is opposite to the orientation of the tenth friction surface 1410. It can be understood that the eleventh friction surface 142a and the tenth friction surface 1410 are arranged opposite to each other. The sixth rotating connection 1421 includes a twelfth friction surface 142b on the side opposite to the fourth rotating arm 143. The twelfth friction surface 142b can be a plane or a curved surface. The orientation of the twelfth friction surface 142b is opposite to the orientation of the ninth friction surface 112. It can be understood that the twelfth friction surface 142b and the ninth friction surface 112 are arranged opposite to each other.

[0062] The third elastic element 150 can be a spring, a bellows, etc. The fourth elastic element 151 can be a spring, a bellows, etc. In the embodiments of this application, both the third elastic element 150 and the fourth elastic element 151 are springs. The third elastic element 150 is in a compressed state between the fifth rotating connection portion 1420 and the seventh rotating connection portion 1430. It can be understood that the third elastic element 150 is always in a compressed state. One end of the third elastic element 150 can abut against the side of the fifth rotating connection portion 1420 facing the fourth rotating arm 143, and the other end of the third elastic element 150 can abut against the side of the seventh rotating connection portion 1430 facing the third rotating arm 142. In the embodiments of this application, the third elastic element 150 can directly compress the fifth rotating connection portion 1420. Of course, in other embodiments, the third elastic element 150 can also indirectly compress the fifth rotating connection portion 1420 through an intermediate structure such as a gasket. The fourth elastic element 151 is in a compressed state between the sixth rotating connection portion 1421 and the eighth rotating connection portion 1431. It is understood that the fourth elastic element 151 is always in a compressed state. One end of the fourth elastic element 151 can abut against the side of the sixth rotating connection 1421 facing the fourth rotating arm 143, and the other end of the fourth elastic element 151 can abut against the side of the eighth rotating connection 1431 facing the third rotating arm 142. In this embodiment, the fourth elastic element 151 can directly compress the sixth rotating connection 1421. Of course, in other embodiments, the fourth elastic element 151 can also indirectly compress the sixth rotating connection 1421 through an intermediate structure such as a gasket.

[0063] The third elastic element 150 and the fourth elastic element 151 are used to press the third rotating arm 142 toward the side opposite to the fourth rotating arm 143, so that the eleventh friction surface 142a abuts against the tenth friction surface 1410 and the twelfth friction surface 142b abuts against the ninth friction surface 112. In one possible embodiment, the eleventh friction surface 142a contacts the tenth friction surface 1410, and the twelfth friction surface 142b contacts the ninth friction surface 112b. The third elastic member 150 and the fourth elastic member 151 are used to press the third rotating arm 142 away from the fourth rotating arm 143, so that the eleventh friction surface 142a abuts against the tenth friction surface 1410 and the twelfth friction surface 142b abuts against the ninth friction surface 112. It can be understood that the third elastic member 150 and the fourth elastic member 151 are used to press the third rotating arm 142 away from the fourth rotating arm 143 to increase the pressing force between the eleventh friction surface 142a and the tenth friction surface 1410, thereby increasing the pressing force between the twelfth friction surface 142b and the ninth friction surface 112. In another possible embodiment, there is a gap between the eleventh friction surface 142a and the tenth friction surface 1410, and a gap between the twelfth friction surface 142b and the ninth friction surface 112. The third elastic member 150 and the fourth elastic member 151 are used to press the third rotating arm 142 toward the side away from the fourth rotating arm 143, so that the eleventh friction surface 142a abuts against the tenth friction surface 1410, and the twelfth friction surface 142b abuts against the ninth friction surface 112. It can be understood that the third elastic member 150 and the fourth elastic member 151 are used to press the third rotating arm 142 toward the side away from the fourth rotating arm 143, so that the eleventh friction surface 142a contacts the tenth friction surface 1410, and the twelfth friction surface 142b contacts the ninth friction surface 112.

[0064] The second rotating shaft assembly 104 and the first rotating shaft assembly 102 can be arranged symmetrically. In this embodiment, the structural design of the second rotating shaft assembly 104 allows the third elastic element 150 and the fourth elastic element 151 of the second elastic component 105 to press the third rotating arm 142 away from the fourth rotating arm 143. This causes the eleventh friction surface 142a of the third rotating arm 142 to abut against the tenth friction surface 1410 of the first movable seat 121, and the twelfth friction surface 142b of the third rotating arm 142 to abut against the ninth friction surface 112 of the base 101. Therefore, due to the action of the third elastic element 150 and the fourth elastic element 151, the contact reliability and tightness between the third rotating arm 142 and the first movable seat 121, and between the third rotating arm 142 and the base 101, are higher. As a result, frictional forces are generated during the relative rotation between the third rotating arm 142 and the first movable seat 121, and between the third rotating arm 142 and the base 101. The generated frictional forces are relatively large, which allows the rotating shaft mechanism 10 to have a large torque, enabling the rotating shaft mechanism 10 to be suspended on the other side.

[0065] Furthermore, such as Figure 12 As shown, Figure 12 for Figure 10 The diagram shows a partially enlarged view of region B. The base 101 also includes a thirteenth friction surface 113 facing away from the ninth friction surface 112. The ninth friction surface 112 and the thirteenth friction surface 113 are opposite to each other and spaced apart. The thirteenth friction surface 113 faces the side where the third rotating arm 142 and the fourth rotating arm 143 are located. The thirteenth friction surface 113 can be a plane or a curved surface.

[0066] The second movable seat 141 also includes a fourteenth friction surface 1411 facing opposite to the tenth friction surface 1410. The fourteenth friction surface 1411 is opposite to and spaced apart from the tenth friction surface 1410. The fourteenth friction surface 1411 faces the side where the third rotating arm 142 and the fourth rotating arm 143 are located. The fourteenth friction surface 1411 can be a plane or a curved surface.

[0067] The seventh rotary connecting portion 1430 includes a fifteenth friction surface 143a on the side opposite to the third rotary arm 142. The fifteenth friction surface 143a can be a plane or a curved surface. The orientation of the fifteenth friction surface 143a is opposite to that of the fourteenth friction surface 1411. It is understood that the fifteenth friction surface 143a and the fourteenth friction surface 1411 are arranged opposite to each other. The eighth rotary connecting portion 1431 includes a sixteenth friction surface 143b on the side opposite to the first rotary arm. The sixteenth friction surface 143b can be a plane or a curved surface. The orientation of the sixteenth friction surface 143b is opposite to that of the thirteenth friction surface 113. It is understood that the sixteenth friction surface 143b and the thirteenth friction surface 113 are arranged opposite to each other.

[0068] The third elastic element 150 and the fourth elastic element 151 are also used to press the fourth rotating arm 143 toward the side opposite to the third rotating arm 142, so that the fifteenth friction surface 143a abuts against the fourteenth friction surface 1411 and the sixteenth friction surface 143b abuts against the thirteenth friction surface 113. In one possible embodiment, the fifteenth friction surface 143a contacts the fourteenth friction surface 1411, and the sixteenth friction surface 143b contacts the thirteenth friction surface 113. The third elastic member 150 and the fourth elastic member 151 are used to press the fourth rotating arm 143 toward the side away from the third rotating arm 142, so that the fifteenth friction surface 143a abuts against the fourteenth friction surface 1411, and the sixteenth friction surface 143b abuts against the thirteenth friction surface 113. It can be understood that the third elastic member 150 and the fourth elastic member 151 are used to press the fourth rotating arm 143 toward the side away from the third rotating arm 142, so as to increase the pressing force between the fifteenth friction surface 143a and the fourteenth friction surface 1411, and to increase the pressing force between the sixteenth friction surface 143b and the thirteenth friction surface 113. In another possible embodiment, there is a gap between the fifteenth friction surface 143a and the fourteenth friction surface 1411, and a gap between the sixteenth friction surface 143b and the thirteenth friction surface 113. The third elastic member 150 and the fourth elastic member 151 are used to press the fourth rotating arm 143 away from the third rotating arm 142, so that the fifteenth friction surface 143a abuts against the fourteenth friction surface 1411 and the sixteenth friction surface 143b abuts against the thirteenth friction surface 113. It can be understood that the third elastic member 150 and the fourth elastic member 151 are used to press the third rotating arm 142 away from the fourth rotating arm 143, so that the fifteenth friction surface 143a contacts the fourteenth friction surface 1411 and the sixteenth friction surface 143b contacts the thirteenth friction surface 113.

[0069] In this embodiment, the third elastic element 150 and the fourth elastic element 151 can compress the third rotating arm 142 and the fourth rotating arm 143, so that the eleventh friction surface 142a abuts against the tenth friction surface 1410, the twelfth friction surface 142b abuts against the ninth friction surface 112, the fifteenth friction surface 143a abuts against the fourteenth friction surface 1411, and the sixteenth friction surface 143b abuts against the thirteenth friction surface 113. The number of friction surfaces of the rotating shaft mechanism 10 is increased, and the torque can be further increased without increasing the number of parts, thereby improving the hovering effect.

[0070] In one possible embodiment, the first friction surface 110, the second friction surface 1210, the third friction surface 122a, the fourth friction surface 122b, the fifth friction surface 111, the sixth friction surface 1211, the seventh friction surface 123a, and the eighth friction surface 123b are all planar. It can be understood that the friction surfaces between the first rotating arm 122, the second rotating arm 123 and the first movable seat 121, as well as the friction surfaces between the first rotating arm 122, the second rotating arm 123 and the base 101, are all planar. For example, the second friction surface 1210, the third friction surface 122a, the sixth friction surface 1211, and the seventh friction surface 123a can all be circular planar surfaces. The first friction surface 110, the fourth friction surface 122b, the fifth friction surface 111, and the eighth friction surface 123b can all be sector-shaped planar surfaces.

[0071] By making the first friction surface 110, the second friction surface 1210, the third friction surface 122a, the fourth friction surface 122b, the fifth friction surface 111, the sixth friction surface 1211, the seventh friction surface 123a, and the eighth friction surface 123b all planar, it is beneficial to balance the forces on the first rotating shaft assembly 102, prevent the first rotating shaft assembly 102 from tilting, and improve the stability of the first rotating shaft assembly 102. In addition, since the rotation of the first rotating arm 122 and the second rotating arm 123 relative to the first movable seat 121 is not a complete circular arc trajectory, making the second friction surface 1210, the third friction surface 122a, the sixth friction surface 1211, and the seventh friction surface 123a all planar facilitates the rotational connection design between the first rotating arm 122, the second rotating arm 123, and the first movable seat 121.

[0072] In one possible embodiment, the ninth friction surface 112, the tenth friction surface 1410, the eleventh friction surface 142a, the twelfth friction surface 142b, the thirteenth friction surface 113, the fourteenth friction surface 1411, the fifteenth friction surface 143a, and the sixteenth friction surface 143b are all planar surfaces. It can be understood that the friction surfaces between the third rotating arm 142, the fourth rotating arm 143 and the second movable seat 141, and the friction surfaces between the third rotating arm 142, the fourth rotating arm 143 and the base 101 are all planar surfaces. For example, the tenth friction surface 1410, the eleventh friction surface 142a, the fourteenth friction surface 1411, and the fifteenth friction surface 143a can all be circular planar surfaces. The ninth friction surface 112, the twelfth friction surface 142b, the thirteenth friction surface 113, and the sixteenth friction surface 143b can all be fan-shaped planar surfaces.

[0073] By making the ninth friction surface 112, the tenth friction surface 1410, the eleventh friction surface 142a, the twelfth friction surface 142b, the thirteenth friction surface 113, the fourteenth friction surface 1411, the fifteenth friction surface 143a, and the sixteenth friction surface 143b all planar, it is beneficial to balance the forces on the second rotating shaft assembly 104, prevent the second rotating shaft assembly 104 from tilting, and improve the stability of the second rotating shaft assembly 104. In addition, since the rotation of the third rotating arm 142 and the fourth rotating arm 143 relative to the second movable seat 141 is not a complete circular arc trajectory, making the tenth friction surface 1410, the eleventh friction surface 142a, the fourteenth friction surface 1411, and the fifteenth friction surface 143a all planar facilitates the rotational connection design between the third rotating arm 142, the fourth rotating arm 143, and the second movable seat 141.

[0074] In one possible implementation, the elastic force of the first elastic element 130 is the same as that of the second elastic element 131. It can be understood that for the first elastic element 130 and the second elastic element 131 with the same elastic coefficient, the compression amount of the first elastic element 130 is equal to the compression amount of the second elastic element 131; for the first elastic element 130 having a lesser elastic coefficient than the second elastic element 131, the compression amount of the first elastic element 130 is greater than the compression amount of the second elastic element 131; and for the first elastic element 130 having a greater elastic coefficient than the second elastic element 131, the compression amount of the first elastic element 130 is less than the compression amount of the second elastic element 131.

[0075] By making the elastic force of the first elastic element 130 the same as that of the second elastic element 131, the forces on the first rotating shaft assembly 102 can be further balanced, preventing the first rotating shaft assembly 102 from tilting and improving its stability. Specifically, during the rotation of the first rotating arm 122 and the second rotating arm 123 relative to the base 101, the compression of the first elastic element 130 remains constant, and the compression of the second elastic element 131 remains constant. In other words, during the rotation of the first rotating arm 122 and the second rotating arm 123 relative to the base 101, the distance between the first rotating arm 122 and the second rotating arm 123 does not change.

[0076] In one possible implementation, such as Figure 13 As shown, the axis of the first rotating connection 1220 coincides with the axis of the third rotating connection 1230, and the axis of the second rotating connection 1221 coincides with the axis of the fourth rotating connection 1231. The axis of the first rotating connection 1220 and the axis of the third rotating connection 1230 can be referenced in the attached diagram. Figure 13 The M-line is shown. The axis of the second rotating connection 1221 and the axis of the fourth rotating connection 1231 can be referenced in the attached diagram. Figure 13The N-line is shown. The axis of rotation of the first rotating connection 1220 is the axis of rotation of the first rotating arm 122 relative to the first movable seat 121. The axis of rotation of the third rotating connection 1230 is the axis of rotation of the second rotating arm 123 relative to the first movable seat 121. The axis of rotation of the second rotating connection 1221 is the axis of rotation of the first rotating arm 122 relative to the base 101. The axis of rotation of the fourth rotating connection 1231 is the axis of rotation of the second rotating arm 123 relative to the base 101.

[0077] Since one end of the first rotating arm 122 is rotatably connected to the first movable seat 121 and the other end is rotatably connected to the base 101, and one end of the second rotating arm 123 is rotatably connected to the first movable seat 121 and the other end is rotatably connected to the base 101, and the rotation axis of the first rotating arm 122 relative to the first movable seat 121 coincides with the rotation axis of the second rotating arm 123 relative to the first movable seat 121, and the rotation axis of the first rotating arm 122 relative to the base 101 coincides with the rotation axis of the second rotating arm 123 relative to the base 101, the movements of the first rotating arm 122 and the second rotating arm 123 are synchronized. Since the first rotating arm 122 and the second rotating arm 123 are located on the same side of the base 101, the first rotating arm 122 and the second rotating arm 123 rotate synchronously and in the same direction relative to the base 101. Since the first friction surface 110, the second friction surface 1210, the third friction surface 122a, the fourth friction surface 122b, the fifth friction surface 111, the sixth friction surface 1211, the seventh friction surface 123a and the eighth friction surface 123b are all planes, it is possible to ensure that the compression amount of the first elastic element 130 and the compression amount of the second elastic element 131 remain unchanged during the rotation of the first rotating arm 122 and the second rotating arm 123 relative to the base 101.

[0078] In one possible implementation, the elastic force of the third elastic element 150 is the same as that of the fourth elastic element 151. It can be understood that for the third elastic element 150 and the fourth elastic element 151 with the same elastic coefficient, the compression amount of the third elastic element 150 is equal to the compression amount of the fourth elastic element 151; for the third elastic element 150 having a lesser elastic coefficient than the fourth elastic element 151, the compression amount of the third elastic element 150 is greater than the compression amount of the fourth elastic element 151; and for the third elastic element 150 having a greater elastic coefficient than the fourth elastic element 151, the compression amount of the third elastic element 150 is less than the compression amount of the fourth elastic element 151.

[0079] By making the elastic force of the third elastic element 150 the same as that of the fourth elastic element 151, the forces on the second rotating shaft assembly 104 can be further balanced, preventing the second rotating shaft assembly 104 from tilting and improving its stability. Specifically, during the rotation of the third rotating arm 142 and the fourth rotating arm 143 relative to the base 101, the compression of the third elastic element 150 remains constant, and the compression of the fourth elastic element 151 remains constant. In other words, during the rotation of the third rotating arm 142 and the fourth rotating arm 143 relative to the base 101, the distance between the third rotating arm 142 and the fourth rotating arm 143 does not change.

[0080] In one possible implementation, such as Figure 13 As shown, the centerline of the fifth rotating connection 1420 coincides with the centerline of the seventh rotating connection 1430, and the centerline of the sixth rotating connection 1421 coincides with the centerline of the eighth rotating connection 1431. The centerlines of the fifth rotating connection 1420 and the seventh rotating connection 1430 can be referenced in the attached diagram. Figure 13 The P-line is shown. The axis of the sixth rotating connection 1421 and the axis of the eighth rotating connection 1431 can be referenced in the attached diagram. Figure 13 The Q line is shown. The axis of rotation of the fifth rotating connection 1420 is the axis of rotation of the third rotating arm 142 relative to the first movable seat 121. The axis of rotation of the seventh rotating connection 1430 is the axis of rotation of the fourth rotating arm 143 relative to the first movable seat 121. The axis of rotation of the sixth rotating connection 1421 is the axis of rotation of the third rotating arm 142 relative to the base 101. The axis of rotation of the eighth rotating connection 1431 is the axis of rotation of the fourth rotating arm 143 relative to the base 101.

[0081] Since one end of the third rotating arm 142 is rotatably connected to the first movable seat 121 and the other end is rotatably connected to the base 101, and one end of the fourth rotating arm 143 is rotatably connected to the first movable seat 121 and the other end is rotatably connected to the base 101, and the rotation axis of the third rotating arm 142 relative to the first movable seat 121 coincides with the rotation axis of the fourth rotating arm 143 relative to the first movable seat 121, and the rotation axis of the third rotating arm 142 relative to the base 101 coincides with the rotation axis of the fourth rotating arm 143 relative to the base 101, the movements of the third rotating arm 142 and the fourth rotating arm 143 are synchronized. Since the third rotating arm 142 and the fourth rotating arm 143 are located on the same side of the base 101, the third rotating arm 142 and the fourth rotating arm 143 rotate synchronously and in the same direction relative to the base 101. The ninth friction surface 112, the tenth friction surface 1410, the eleventh friction surface 142a, the twelfth friction surface 142b, the thirteenth friction surface 113, the fourteenth friction surface 1411, the fifteenth friction surface 143a and the sixteenth friction surface 143b are all planes. Therefore, during the rotation of the third rotating arm 142 and the fourth rotating arm 143 relative to the base 101, the compression of the third elastic element 150 remains unchanged and the compression of the fourth elastic element 151 remains unchanged.

[0082] In another possible embodiment, the second friction surface 1210, the third friction surface 122a, the sixth friction surface 1211, and the seventh friction surface 123a can be planes; the first friction surface 110, the fourth friction surface 122b, the fifth friction surface 111, and the eighth friction surface 123b can be cam surfaces. It can be understood that the friction surfaces between the first rotating arm 122, the second rotating arm 123, and the first movable seat 121 are all planes. The friction surfaces between the first rotating arm 122, the second rotating arm 123, and the base 101 are all cam surfaces. The cam surfaces include convex surfaces and concave surfaces.

[0083] Since the rotation trajectories of the first rotating arm 122 and the second rotating arm 123 relative to the first movable seat 121 are not complete circular arc trajectories, making the second friction surface 1210, the third friction surface 122a, the sixth friction surface 1211, and the seventh friction surface 123a all planar is beneficial to the rotational connection design between the first rotating arm 122, the second rotating arm 123 and the first movable seat 121. Furthermore, making the first friction surface 110, the fourth friction surface 122b, the fifth friction surface 111, and the eighth friction surface 123b cam surfaces allows the compressive force between the first rotating arm 122, the second rotating arm 123 and the base 101 to change with the bending state of the first rotating arm 122 and the second rotating arm 123. This helps the first rotating shaft assembly 102 to have a certain flattening force in the flattened state and a certain fastening force in the folded state, improving the flattening and folding effect on one side of the rotating shaft mechanism 10.

[0084] During the rotation of the first rotating arm 122 and the second rotating arm 123 relative to the base 101 from a flattened state to a folded state, the compression of the first elastic element 130 remains constant, while the compression of the second elastic element 131 first gradually increases and then gradually decreases. In other words, during the rotation of the first rotating arm 122 and the second rotating arm 123 relative to the base 101 from a flattened state to a folded state, the distance between the first rotating connecting part 1220 and the third rotating connecting part 1230 remains essentially constant, while the distance between the second rotating connecting part 1221 and the fourth rotating connecting part 1231 first gradually decreases and then gradually increases.

[0085] In one possible implementation, the axis of the first rotating connection 1220 coincides with the axis of the third rotating connection 1230, and the axis of the second rotating connection 1221 coincides with the axis of the fourth rotating connection 1231. Since the first rotating arm 122 and the second rotating arm 123 are located on the same side of the base 101, the first rotating arm 122 and the second rotating arm 123 rotate synchronously and in the same direction relative to the base 101. Since the first friction surface 110, the fourth friction surface 122b, the fifth friction surface 111, and the eighth friction surface 123b are cam surfaces, it is possible to achieve that during the process of the first rotating arm 122 and the second rotating arm 123 rotating relative to the base 101 from a flattened state to a folded state, the compression of the first elastic element 130 remains unchanged, while the compression of the second elastic element 131 first gradually increases and then gradually decreases.

[0086] In another possible embodiment, the tenth friction surface 1410, the eleventh friction surface 142a, the fourteenth friction surface 1411, and the fifteenth friction surface 143a can be planes; the ninth friction surface 112, the twelfth friction surface 142b, the thirteenth friction surface 113, and the sixteenth friction surface 143b can be cam surfaces. It can be understood that the friction surfaces between the third rotating arm 142, the fourth rotating arm 143, and the second movable seat 141 are all planes. The friction surfaces between the third rotating arm 142, the fourth rotating arm 143, and the base 101 are all cam surfaces. The cam surfaces include convex surfaces and concave surfaces.

[0087] Since the rotation trajectories of the third rotating arm 142 and the fourth rotating arm 143 relative to the second movable seat 141 are not complete circular arc trajectories, making the tenth friction surface 1410, the eleventh friction surface 142a, the fourteenth friction surface 1411, and the fifteenth friction surface 143a all planar is beneficial to the rotational connection design between the third rotating arm 142, the fourth rotating arm 143 and the second movable seat 141. Furthermore, making the ninth friction surface 112, the twelfth friction surface 142b, the thirteenth friction surface 113, and the sixteenth friction surface 143b cam surfaces allows the compressive force between the third rotating arm 142, the fourth rotating arm 143 and the base 101 to change with the bending state of the third rotating arm 142, the fourth rotating arm 143. This helps the second rotating shaft assembly 104 to have a certain unfolding force in the flattened state and a certain fastening force in the folded state, improving the flattening and folding effect on the other side of the rotating shaft mechanism 10.

[0088] During the rotation of the third rotating arm 142 and the fourth rotating arm 143 relative to the base 101 from a flattened state to a folded state, the compression of the third elastic element 150 remains constant, while the compression of the fourth elastic element 151 first gradually increases and then gradually decreases. In other words, during the rotation of the third rotating arm 142 and the fourth rotating arm 143 relative to the base 101 from a flattened state to a folded state, the distance between the fifth rotating connecting part 1420 and the seventh rotating connecting part 1430 remains essentially constant, while the distance between the sixth rotating connecting part 1421 and the eighth rotating connecting part 1431 first gradually decreases and then gradually increases.

[0089] In one possible implementation, the axis of the fifth rotating connection 1420 coincides with the axis of the seventh rotating connection 1430, and the axis of the sixth rotating connection 1421 coincides with the axis of the eighth rotating connection 1431. Since the third rotating arm 142 and the fourth rotating arm 143 are located on the same side of the base 101, they rotate synchronously and in the same direction relative to the base 101. Since the ninth friction surface 112, the twelfth friction surface 142b, the thirteenth friction surface 113, and the sixteenth friction surface 143b are cam surfaces, it is possible to achieve that during the process of the third rotating arm 142 and the fourth rotating arm 143 rotating relative to the base 101 from a flattened state to a folded state, the compression of the third elastic element 150 remains unchanged, while the compression of the fourth elastic element 151 first gradually increases and then gradually decreases.

[0090] During the rotation of the first rotating arm 122 and the second rotating arm 123 relative to the first movable seat 121, the first elastic element 130 rotates relative to the first movable seat 121 under the influence of the first rotating arm 122 and the second rotating arm 123. During the rotation of the first rotating arm 122 and the second rotating arm 123 relative to the base 101, the second elastic element 131 rotates relative to the base 101 under the influence of the first rotating arm 122 and the second rotating arm 123. This avoids interference between the first elastic element 130 and the first movable seat 121, and between the second elastic element 131 and the base 101, thus preventing any impact on the movement of the first rotating arm 122 and the second rotating arm 123.

[0091] In one possible embodiment, such as Figure 14 As shown, the first rotating connecting portion 1220 has a first supporting connecting portion 1222 on the side facing the second rotating arm 123. The third rotating connecting portion 1230 has a second supporting connecting portion 1232 on the side facing the first rotating arm 122. The first rotating connecting portion 1220 having the first supporting connecting portion 1222 can be understood as the first rotating connecting portion 1220 and the first supporting connecting portion 1222 being integrally formed, or it can be understood as the first supporting connecting portion 1222 being fixed to the first rotating connecting portion 1220 through a detachable or non-detachable connection method. The third rotating connecting portion 1230 having the second supporting connecting portion 1232 can be understood as the third rotating connecting portion 1230 and the second supporting connecting portion 1232 being integrally formed, or it can be understood as the second supporting connecting portion 1232 being fixed to the third rotating connecting portion 1230 through a detachable or non-detachable connection method. The side of the first support connecting portion 1222 facing away from the first rotating connecting portion 1220 and the side of the second support connecting portion 1232 facing away from the third rotating connecting portion 1230 can be in contact or spaced apart. This application does not specifically limit the shape of the first support connecting portion 1222 or the shape of the second support connecting portion 1232. For example, the first support connecting portion 1222 can be cylindrical, prismatic, etc.; the second support connecting portion 1232 can be cylindrical, prismatic, etc. In one possible embodiment, the first support connecting portion 1222 can be cylindrical, and the second support connecting portion 1232 can be cylindrical.

[0092] One end of the first elastic element 130 is sleeved on the first support connection portion 1222, and the other end is sleeved on the second support connection portion 1232. The extension direction of the first support connection portion 1222 is parallel to the axis of the first rotating connection portion 1220, and the extension direction of the second support connection portion 1232 is parallel to the axis of the third rotating connection portion 1230. This allows the compression direction of the first elastic element 130, with one end sleeved on the first support connection portion 1222 and the other end sleeved on the second support connection portion 1232, to be parallel to the axis of rotation of the first rotating arm 122 and the second rotating arm 123 relative to the first movable seat 121. This enables the first elastic element 130 to axially compress the first rotating arm 122 and the second rotating arm 123, improving the reliability of the third friction surface 122a abutting against the second friction surface 1210 and the seventh friction surface 123a abutting against the sixth friction surface 1211.

[0093] The second rotating connecting portion 1221 has a third supporting connecting portion 1223 on the side facing the second rotating arm 123. The fourth rotating connecting portion 1231 has a fourth supporting connecting portion 1233 on the side facing the first rotating arm 122. The second rotating connecting portion 1221 having a third supporting connecting portion 1223 can be understood as the second rotating connecting portion 1221 and the third supporting connecting portion 1223 being integrally formed, or it can also be understood as the third supporting connecting portion 1223 being fixed to the second rotating connecting portion 1221 through a detachable or non-detachable connection method. The fourth rotating connecting portion 1231 having a fourth supporting connecting portion 1233 can be understood as the fourth rotating connecting portion 1231 and the fourth supporting connecting portion 1233 being integrally formed, or it can also be understood as the fourth supporting connecting portion 1233 being fixed to the fourth rotating connecting portion 1231 through a detachable or non-detachable connection method. The side of the third support connecting portion 1223 opposite to the second rotating connecting portion 1221 and the side of the fourth support connecting portion 1233 opposite to the fourth rotating connecting portion 1231 can be in contact or spaced apart. This application does not specifically limit the shape of the third support connecting portion 1223 or the fourth support connecting portion 1233. For example, the third support connecting portion 1223 can be cylindrical, prismatic, etc.; the fourth support connecting portion 1233 can be cylindrical, prismatic, etc. In one possible embodiment, the third support connecting portion 1223 and the fourth support connecting portion 1233 can both be cylindrical. One end of the second elastic member 131 is sleeved on the third support connecting portion 1223, and the other end is sleeved on the fourth support connecting portion 1233.

[0094] The extension direction of the third support connection 1223 is parallel to the axis of the second rotating connection 1221, and the extension direction of the fourth support connection 1233 is parallel to the axis of the fourth rotating connection 1231. This allows the compression direction of the second elastic member 131, which is fitted onto the third support connection 1223 at one end and onto the fourth support connection 1233 at the other end, to be parallel to the axis of rotation of the first rotating arm 122 and the second rotating arm 123 relative to the base 101. As a result, the second elastic member 131 can axially compress the first rotating arm 122 and the second rotating arm 123, thereby improving the reliability of the fourth friction surface 122b abutting against the first friction surface 110 and the eighth friction surface 123b abutting against the fifth friction surface 111.

[0095] Since the first rotating arm 122 has a first support connection part 1222 and a third support connection part 1223 on the side facing the second rotating arm 123, and the second rotating arm 123 has a second support connection part 1232 and a fourth support connection part 1233 on the side facing the first rotating arm 122, one end of the first elastic member 130 is sleeved on the first support connection part 1222 and the other end is sleeved on the second support connection part 1232, and one end of the second elastic member 131 is sleeved on the third support connection part 1223 and the other end is sleeved on the fourth support connection part 1233, therefore the first support connection part The first elastic member 130 can be supported by the second support connection 1222 and the third support connection 1223 and the fourth support connection 1233, and the second elastic member 131 can be supported by the third support connection 1223 and the fourth support connection 1233, so that the first elastic member 130 and the second elastic member 131 can be stably compressed between the first rotating arm 122 and the second rotating arm 123, and the second elastic member 131 can rotate relative to the base 101 under the drive of the first rotating arm 122 and the second rotating arm 123 during the rotation of the first rotating arm 122 and the second rotating arm 123 relative to the base 101.

[0096] The first elastic element 130 is non-rotatably sleeved on the first support connection portion 1222, and / or the first elastic element 130 is non-rotatably sleeved on the second support connection portion 1232. Optionally, the first elastic element 130 is interference-fitted with at least one of the first support connection portion 1222 and the second support connection portion 1232; or, the first elastic element 130 is fixedly connected to at least one of the first support connection portion 1222 and the second support connection portion 1232; or, the relative rotation between the first elastic element 130 and at least one of the first support connection portion 1222 and the second support connection portion 1232 is restricted by a limiting structure.

[0097] The second elastic member 131 is non-rotatably sleeved on the third support connection portion 1223, and / or, the second elastic member 131 is non-rotatably sleeved on the fourth support connection portion 1233. Optionally, the second elastic member 131 is interference-fitted with at least one of the third support connection portion 1223 and the fourth support connection portion 1233; or, the second elastic member 131 is fixedly connected with at least one of the third support connection portion 1223 and the fourth support connection portion 1233; or, the relative rotation between the second elastic member 131 and at least one of the third support connection portion 1223 and the fourth support connection portion 1233 is restricted by a limiting structure.

[0098] By making the first elastic element 130 non-rotatably fitted onto the first support connection 1222, and / or, the first elastic element 130 non-rotatably fitted onto the second support connection 1232, and / or, the second elastic element 131 non-rotatably fitted onto the third support connection 1223, and / or, the second elastic element 131 non-rotatably fitted onto the fourth support connection 1233, the stability of the first elastic element 130 and the second elastic element 131 can be guaranteed, and the first elastic element 130 and the second elastic element 131 can be prevented from rotatably fitting onto the fourth support connection 1233. 31 rotates relative to the first rotating arm 122 and the second rotating arm 123, thereby improving the reliability of the first elastic element 130 and the second elastic element 131 pressing the first rotating arm 122 and the second rotating arm 123, so as to increase the friction between the first rotating arm 122 and the second rotating arm 123 and the first movable seat 121 and the base 101. In turn, it can improve the effectiveness of increasing the torque of the rotating shaft mechanism 10 through the first elastic element 130 and the second elastic element 131 and realizing the suspension of the rotating shaft mechanism 10.

[0099] During the rotation of the third rotating arm 142 and the fourth rotating arm 143 relative to the second movable seat 141, the third elastic element 150 rotates relative to the second movable seat 141 under the influence of the third rotating arm 142 and the fourth rotating arm 143. During the rotation of the third rotating arm 142 and the fourth rotating arm 143 relative to the base 101, the fourth elastic element 151 rotates relative to the base 101 under the influence of the third rotating arm 142 and the fourth rotating arm 143. This avoids interference between the third elastic element 150 and the second movable seat 141, and between the fourth elastic element 151 and the base 101, thus preventing any impact on the movement of the third rotating arm 142 and the fourth rotating arm 143.

[0100] In one possible embodiment, such as Figure 15As shown, the fifth rotating connecting part 1420 has a fifth supporting connecting part 1422 on the side facing the fourth rotating arm 143. The seventh rotating connecting part 1430 has a sixth supporting connecting part 1432 on the side facing the third rotating arm 142. The fifth rotating connecting part 1420 having a fifth supporting connecting part 1422 can be understood as the fifth rotating connecting part 1420 and the fifth supporting connecting part 1422 being integrally formed, or it can also be understood as the fifth supporting connecting part 1422 being fixed to the fifth rotating connecting part 1420 through a detachable or non-detachable connection method. The seventh rotating connecting part 1430 having a sixth supporting connecting part 1432 can be understood as the seventh rotating connecting part 1430 and the sixth supporting connecting part 1432 being integrally formed, or it can also be understood as the sixth supporting connecting part 1432 being fixed to the seventh rotating connecting part 1430 through a detachable or non-detachable connection method. The side of the fifth support connecting portion 1422 opposite to the fifth rotating connecting portion 1420 and the side of the sixth support connecting portion 1432 opposite to the seventh rotating connecting portion 1430 can be in contact or spaced apart. This application does not specifically limit the shape of the fifth support connecting portion 1422 or the sixth support connecting portion 1432. For example, the fifth support connecting portion 1422 can be cylindrical, prismatic, etc.; the sixth support connecting portion 1432 can be cylindrical, prismatic, etc. In one possible embodiment, the fifth support connecting portion 1422 can be cylindrical, and the sixth support connecting portion 1432 can be cylindrical.

[0101] One end of the third elastic member 150 is sleeved on the fifth support connection 1422, and the other end is sleeved on the sixth support connection 1432. The extension direction of the fifth support connection 1422 is parallel to the axis of the fifth rotating connection 1420, and the extension direction of the sixth support connection 1432 is parallel to the axis of the seventh rotating connection 1430. This allows the compression direction of the third elastic member 150, with one end sleeved on the fifth support connection 1422 and the other end sleeved on the sixth support connection 1432, to be parallel to the axis of rotation of the third rotating arm 142 and the fourth rotating arm 143 relative to the second movable seat 141. This enables the third elastic member 150 to axially compress the third rotating arm 142 and the fourth rotating arm 143, improving the reliability of the eleventh friction surface 142a abutting against the tenth friction surface 1410 and the fifteenth friction surface 143a abutting against the fourteenth friction surface 1411.

[0102] The sixth rotating connecting part 1421 has a seventh supporting connecting part 1423 on the side facing the fourth rotating arm 143. The eighth rotating connecting part 1431 has an eighth supporting connecting part 1433 on the side facing the third rotating arm 142. The inclusion of the seventh supporting connecting part 1423 on the sixth rotating connecting part 1421 can be understood as the sixth rotating connecting part 1421 and the seventh supporting connecting part 1423 being integrally formed, or the seventh supporting connecting part 1423 being fixed to the sixth rotating connecting part 1421 through a detachable or non-detachable connection. Similarly, the inclusion of the eighth supporting connecting part 1433 on the eighth rotating connecting part 1431 can be understood as the eighth rotating connecting part 1431 and the eighth supporting connecting part 1433 being integrally formed, or the eighth supporting connecting part 1433 being fixed to the eighth rotating connecting part 1431 through a detachable or non-detachable connection. The side of the seventh support connecting portion 1423 opposite to the sixth rotating connecting portion 1421 and the side of the eighth support connecting portion 1433 opposite to the eighth rotating connecting portion 1431 can be in contact or spaced apart. This application does not specifically limit the shape of the seventh support connecting portion 1423 or the eighth support connecting portion 1433. For example, the seventh support connecting portion 1423 can be cylindrical, prismatic, etc.; the eighth support connecting portion 1433 can be cylindrical, prismatic, etc. In one possible embodiment, the seventh support connecting portion 1423 can be cylindrical, and the eighth support connecting portion 1433 can be cylindrical. One end of the fourth elastic member 151 is sleeved on the seventh support connecting portion 1423, and the other end is sleeved on the eighth support connecting portion 1433. The extension direction of the seventh support connection 1423 is parallel to the axis of the sixth rotating connection 1421, and the extension direction of the eighth support connection 1433 is parallel to the axis of the eighth rotating connection 1431. This allows the compression direction of the fourth elastic member 151, which is fitted on the seventh support connection 1423 at one end and on the eighth support connection 1433 at the other end, to be parallel to the axis of rotation of the third rotating arm 142 and the fourth rotating arm 143 relative to the base 101. As a result, the fourth elastic member 151 can axially compress the third rotating arm 142 and the fourth rotating arm 143, thereby improving the reliability of the twelfth friction surface 142b abutting against the ninth friction surface 112 and the sixteenth friction surface 143b abutting against the thirteenth friction surface 113.

[0103] Since the third rotating arm 142 has a fifth support connection 1422 and a seventh support connection 1423 on the side facing the fourth rotating arm 143, and the fourth rotating arm 143 has a sixth support connection 1432 and an eighth support connection 1433 on the side facing the third rotating arm 142, one end of the third elastic member 150 is sleeved on the fifth support connection 1422 and the other end is sleeved on the sixth support connection 1432, and one end of the fourth elastic member 151 is sleeved on the seventh support connection 1423 and the other end is sleeved on the eighth support connection 1433, therefore the fifth support connection... The second support connection 1232 can jointly support the third elastic member 150, and the seventh support connection 1423 and the eighth support connection 1433 can jointly support the fourth elastic member 151, so that the third elastic member 150 and the fourth elastic member 151 can be stably positioned in a compressed state between the third rotating arm 142 and the fourth rotating arm 143, and can realize that during the rotation of the third rotating arm 142 and the fourth rotating arm 143 relative to the base 101, the fourth elastic member 151 rotates relative to the base 101 under the drive of the third rotating arm 142 and the fourth rotating arm 143.

[0104] The third elastic member 150 is non-rotatably sleeved on the fifth support connection portion 1422, and / or, the third elastic member 150 is non-rotatably sleeved on the sixth support connection portion 1432. Optionally, the third elastic member 150 is interference-fitted with at least one of the fifth support connection portion 1422 and the sixth support connection portion 1432; or, the third elastic member 150 is fixedly connected with at least one of the fifth support connection portion 1422 and the sixth support connection portion 1432; or, the relative rotation between the third elastic member 150 and at least one of the fifth support connection portion 1422 and the sixth support connection portion 1432 is restricted by a limiting structure.

[0105] The fourth elastic member 151 is non-rotatably sleeved on the seventh support connection portion 1423, and / or, the fourth elastic member 151 is non-rotatably sleeved on the eighth support connection portion 1433. Optionally, the fourth elastic member 151 is interference-fitted with at least one of the seventh support connection portion 1423 and the eighth support connection portion 1433; or, the fourth elastic member 151 is fixedly connected with at least one of the seventh support connection portion 1423 and the eighth support connection portion 1433; or, the relative rotation between the fourth elastic member 151 and at least one of the seventh support connection portion 1423 and the eighth support connection portion 1433 is restricted by a limiting structure.

[0106] By making the third elastic element 150 non-rotatably fitted onto the fifth support connection 1422, and / or, the third elastic element 150 non-rotatably fitted onto the sixth support connection 1432, and the fourth elastic element 151 non-rotatably fitted onto the seventh support connection 1423, and / or, the fourth elastic element 151 non-rotatably fitted onto the eighth support connection 1433, the stability of the third elastic element 150 and the fourth elastic element 151 can be guaranteed, and the problems of the third elastic element 150 and the fourth elastic element 151 being rotatably fitted onto the eighth support connection 1433 can be avoided. 51 rotates relative to the third rotating arm 142 and the fourth rotating arm 143, thereby improving the reliability of the first elastic element 130 and the fourth elastic element 151 pressing the third rotating arm 142 and the fourth rotating arm 143, so as to increase the friction between the third rotating arm 142 and the fourth rotating arm 143 and the second movable seat 141 and the base 101. In turn, it can improve the effectiveness of increasing the torque of the rotating shaft mechanism 10 through the third elastic element 150 and the fourth elastic element 151 and realizing the suspension of the rotating shaft mechanism 10.

[0107] Please refer to Figure 16 and Figure 17 The first rotating connection portion 1220 includes a first body 1224 and a first connecting shaft 1225 disposed on the side of the first body 1224 opposite to the second rotating arm 123. A third friction surface 122a is formed on the side of the first body 1224 opposite to the second rotating arm 123. The first movable seat 121 has a first shaft hole 1212 opening towards the second rotating arm 123. The first rotating arm 122 and the first movable seat 121 are rotatably connected by the first connecting shaft 1225 engaging with the first shaft hole 1212. The first connecting shaft 1225 passes through the first shaft hole 1212. The first connecting shaft 1225 may be cylindrical. The first shaft hole 1212 is a blind hole. The first shaft hole 1212 may be cylindrical.

[0108] The third rotating connection portion 1230 includes a second body 1234 and a second connecting shaft 1235 disposed on the side of the second body 1234 opposite to the first rotating arm 122. The first movable seat 121 also has a second shaft hole 1213 with an opening facing the first rotating arm 122. The second rotating arm 123 and the first movable seat 121 are rotatably connected by the second connecting shaft 1235 and the second shaft hole 1213. The second connecting shaft 1235 passes through the second shaft hole 1213. The second connecting shaft 1235 may be cylindrical. The second shaft hole 1213 is a blind hole. The second shaft hole 1213 may be cylindrical.

[0109] In this embodiment, the first rotating arm 122 and the first movable seat 121 are rotatably connected through the cooperation of the first connecting shaft 1225 and the first shaft hole 1212. This facilitates the compression force exerted by the first elastic element 130 on the first rotating connecting portion 1220, ensuring a tight fit between the first rotating arm 122 and the first movable seat 121. The second rotating arm 123 and the first movable seat 121 are rotatably connected through the cooperation of the second connecting shaft 1235 and the second shaft hole 1213. This facilitates the compression force exerted by the first elastic element 130 on the third rotating connecting portion 1230, ensuring a tight fit between the first rotating arm 122 and the first movable seat 121. Furthermore, the second elastic element 131 can further increase the force on the first rotating connecting portion 1220 and the third rotating connecting portion 1230, and helps to balance the force exerted by the first elastic element 130 on the first rotating arm 122 and the second rotating arm 123, avoiding uneven force distribution at both ends of the first rotating arm 122 and the second rotating arm 123.

[0110] In one possible implementation, the first body 1224 and the first connecting shaft 1225 are integrally formed. The second body 1234 and the second connecting shaft 1235 are integrally formed. By making the first body 1224 and the first connecting shaft 1225 integrally formed, and the second body 1234 and the second connecting shaft 1235 integrally formed, the strength of the first connecting shaft 1225 and the second connecting shaft 1235 can be guaranteed, the reliability of the rotational connection between the first rotating arm 122, the second rotating arm 123 and the first movable seat 121 can be improved, and the assembly difficulty of the first rotating arm 122, the second rotating arm 123 and the first movable seat 121 can be reduced.

[0111] The first connecting shaft 1225 includes a first end face on the side opposite to the first body 1224. The first shaft hole 1212 includes a first bottom wall facing the second rotating arm 123. The second connecting shaft 1235 includes a second end face on the side opposite to the second body 1234. The second shaft hole 1213 includes a second bottom wall facing the first rotating arm 122. The first elastic member 130 and the second elastic member 131 are also used to press the first rotating arm 122 toward the side opposite to the second rotating arm 123 so that the first end face abuts against the first bottom wall, and to press the second rotating arm 123 toward the side opposite to the first rotating arm 122 so that the second end face abuts against the second bottom wall.

[0112] It is understood that the first elastic element 130 and the second elastic element 131 are also used to increase the compressive force between the first connecting shaft 1225 and the second shaft hole 1213, and to increase the compressive force between the second connecting shaft 1235 and the second shaft hole 1213, thereby further enabling the first rotating arm 122 to be tightly connected to the first movable seat 121, and the second rotating arm 123 to be tightly connected to the first movable seat 121. In addition, the first end face abuts against the first bottom wall, and the second end face abuts against the second bottom wall. During the rotation of the first rotating arm 122 and the second rotating arm 123 relative to the first movable seat 121, the frictional force generated between the first end face and the first bottom wall, and the frictional force generated between the second end face and the second bottom wall, can further increase the torque of the rotating shaft mechanism 10.

[0113] Please refer to Figure 16 and Figure 17 The fifth rotating connection portion 1420 includes a third body 1424 and a third connecting shaft 1425 disposed on the side of the third body 1424 opposite to the fourth rotating arm 143. An eleventh friction surface 142a is formed on the side of the third body 1424 opposite to the fourth rotating arm 143. The second movable seat 141 has a third shaft hole 1412 with an opening facing the fourth rotating arm 143. The third rotating arm 142 and the second movable seat 141 are rotatably connected by the cooperation of the third connecting shaft 1425 and the third shaft hole 1412. The third connecting shaft 1425 passes through the third shaft hole 1412. The third connecting shaft 1425 may be cylindrical. The third shaft hole 1412 is a blind hole. The seventh rotating connection portion 1430 includes a fourth body 1434 and a fourth connecting shaft 1435 disposed on the side of the fourth body 1434 opposite to the third rotating arm 142. The second movable seat 141 also has a fourth shaft hole 1413 with an opening facing the third rotating arm 142. The fourth rotating arm 143 and the second movable seat 141 are rotatably connected by a fourth connecting shaft 1435 fitting into the fourth shaft hole 1413. The fourth connecting shaft 1435 passes through the fourth shaft hole 1413. The fourth connecting shaft 1435 may be cylindrical. The fourth shaft hole 1413 is a blind hole. The fourth shaft hole 1413 may be cylindrical.

[0114] In this embodiment, the third rotating arm 142 and the second movable seat 141 are rotatably connected through the cooperation of the third connecting shaft 1425 and the third shaft hole 1412. This facilitates the pressing force exerted by the third elastic element 150 on the fifth rotating connecting part 1420, ensuring a tight fit between the third rotating arm 142 and the second movable seat 141. The fourth rotating arm 143 and the second movable seat 141 are rotatably connected through the cooperation of the fourth connecting shaft 1435 and the fourth shaft hole 1413. This facilitates the pressing force exerted by the third elastic element 150 on the seventh rotating connecting part 1430, ensuring a tight fit between the third rotating arm 142 and the second movable seat 141. Furthermore, the fourth elastic element 151 can further increase the force on the fifth rotating connecting part 1420 and the seventh rotating connecting part 1430, and facilitates the force balance between the third elastic element 150 and the force exerted by the third rotating arm 142 and the fourth rotating arm 143, preventing uneven force distribution at both ends of the third rotating arm 142 and the fourth rotating arm 143.

[0115] In one possible implementation, the third body 1424 and the third connecting shaft 1425 are integrally formed. The fourth body 1434 and the fourth connecting shaft 1435 are integrally formed. By making the third body 1424 and the third connecting shaft 1425 integrally formed, and the fourth body 1434 and the fourth connecting shaft 1435 integrally formed, the strength of the third connecting shaft 1425 and the fourth connecting shaft 1435 can be guaranteed, the reliability of the rotational connection between the third rotating arm 142, the fourth rotating arm 143 and the second movable seat 141 can be improved, and the assembly difficulty of the third rotating arm 142, the fourth rotating arm 143 and the second movable seat 141 can be reduced.

[0116] The third connecting shaft 1425 includes a third end face on the side opposite to the third body 1424. The third shaft hole 1412 includes a third bottom wall facing the fourth rotating arm 143. The fourth connecting shaft 1435 includes a fourth end face on the side opposite to the fourth body 1434. The fourth shaft hole 1413 includes a fourth bottom wall facing the first rotating arm 122. The third elastic member 150 and the fourth elastic member 151 are also used to press the third rotating arm 142 toward the side opposite to the fourth rotating arm 143 so that the third end face abuts against the third bottom wall, and to press the fourth rotating arm 143 toward the side opposite to the third rotating arm 142 so that the fourth end face abuts against the fourth bottom wall.

[0117] It is understood that the third elastic element 150 and the fourth elastic element 151 are also used to increase the compressive force between the third connecting shaft 1425 and the fourth shaft hole 1413, and to increase the compressive force between the fourth connecting shaft 1435 and the fourth shaft hole 1413, thereby further enabling the third rotating arm 142 to be tightly connected to the second movable seat 141, and the fourth rotating arm 143 to be tightly connected to the second movable seat 141. In addition, the third end face abuts against the third bottom wall, and the fourth end face abuts against the fourth bottom wall. During the rotation of the third rotating arm 142 and the fourth rotating arm 143 relative to the second movable seat 141, the frictional force generated between the third end face and the third bottom wall, and the frictional force generated between the fourth end face and the fourth bottom wall, can further increase the torque of the rotating shaft mechanism 10.

[0118] like Figure 18 As shown, the first rotating shaft assembly 102 also includes a first rotating shaft 120, a first connecting arm 124, and a second connecting arm 125. The first connecting arm 124 and the second connecting arm 125 are disposed between the base 101 and the first movable seat 121 and are spaced apart. This application does not specify the specific distance between the first connecting arm 124 and the second connecting arm 125.

[0119] The first link arm 124 is rotatably connected to the base 101 via the first pivot 120. The first link arm 124 is slidably connected to the first movable seat 121. The side of the first link arm 124 opposite to the second link arm 125 is in slidable contact with the first movable seat 121. It is understood that the first link arm 124 can rotate relative to the base 101. Relative sliding can occur between the first link arm 124 and the first movable seat 121. During this relative sliding, the side of the first link arm 124 opposite to the second link arm 125 contacts the first movable seat 121. The second link arm 125 is rotatably connected to the base 101 via the first pivot 120. The second link arm 125 is slidably connected to the first movable seat 121. The side of the second link arm 125 opposite to the first link arm 124 is in slidable contact with the first movable seat 121. It is understood that the second link arm 125 can rotate relative to the base 101. The second link arm 125 and the first movable seat 121 can slide relative to each other. During the relative sliding process between the second link arm 125 and the first movable seat 121, the side of the second link arm 125 away from the first link arm 124 contacts the first movable seat 121.

[0120] The base 101, first rotating arm 122, second rotating arm 123, first movable seat 121, first connecting arm 124, and second connecting arm 125 of the rotating shaft mechanism 10 of this application form a crank-slider mechanism. This mechanism enables the flexible display screen 200 to be teardrop-shaped when folded, and also allows the length of the rotating shaft mechanism 10 to adapt to the length changes of the flexible display screen 200, thereby preventing the flexible display screen 200 from being stretched or squeezed during bending. Since the first connecting arm 124 and the second connecting arm 125 are both rotatably connected to the base 101 via the first rotating shaft 120, and both the first connecting arm 124 and the second connecting arm 125 are slidably connected to the first movable seat 121, the first connecting arm 124 and the second connecting arm 125 rotate synchronously relative to the base 101, and the rotation center of the first connecting arm 124 and the rotation center of the second connecting arm 125 are both the axis of the first rotating shaft 120. During the rotation of the first link arm 124 and the second link arm 125 relative to the base 101, the distance between the first link arm 124 and the second link arm 125 does not change.

[0121] The rotating shaft mechanism 10 also includes a fifth elastic element 106. The fifth elastic element 106 can be a spring, a bellows, etc. In the following embodiments, the fifth elastic element 106 is exemplified as a spring. The fifth elastic element 106 is in a compressed state between the first link arm 124 and the second link arm 125, used to press the first link arm 124 away from the second link arm 125, and to press the second link arm 125 away from the first link arm 124. It can be understood that the fifth elastic element 106 is always in a compressed state. Specifically, one side of the fifth elastic element 106 can abut against the side of the first link arm 124 facing the second link arm 125, and the other side of the fifth elastic element 106 can abut against the side of the second link arm 125 facing the first link arm 124. In other words, the fifth elastic element 106 can directly provide compressive force to the first link arm 124 and the second link arm 125. Of course, in other embodiments, the fifth elastic element 106 can also indirectly provide compressive force to the first link arm 124 and the second link arm 125 through intermediate structures such as gaskets. When the pivot mechanism 10 switches between the flattened state, the folded state, and the hovering state, the state of the fifth elastic element 106 compressed between the first link arm 124 and the second link arm 125 remains unchanged. It can be understood that the compression amount of the fifth elastic element 106 remains unchanged during the rotation of the first link arm 124 and the second link arm 125 relative to the base 101. By positioning the first link arm 124 and the second link arm 125 in the rotating shaft mechanism 10 between the base 101 and the first movable seat 121 and spaced apart, both the first link arm 124 and the second link arm 125 are rotatably connected to the base 101 via the first rotating shaft 120, and both the first link arm 124 and the second link arm 125 are slidably connected to the first movable seat 121. The side of the first link arm 124 away from the second link arm 125 is in slidable contact with the first movable seat 121, and the side of the second link arm 125 away from the first link arm 124 is in slidable contact with the first movable seat 121. The fifth elastic element 106 is in a compressed state between the first link arm 124 and the second link arm 125, allowing the fifth elastic element 106 to... 06. The first link arm 124 is pressed against the side away from the second link arm 125, and the second link arm 125 is pressed against the side away from the first link arm 124. As a result, the contact reliability and tightness between the first link arm 124 and the first movable seat 121, and between the second link arm 125 and the first movable seat 121 are higher. That is, the friction between the first link arm 124 and the first movable seat 121, and between the second link arm 125 and the first movable seat 121, are increased during the relative sliding process between the first link arm 124, the second link arm 125 and the first movable seat 121. This can increase the torque of the pivot mechanism 10 and improve the hovering effect on one side of the pivot mechanism 10.

[0122] In one possible embodiment, as the first link arm 124 and the second link arm 125 rotate relative to the base 101, the fifth elastic element 106 rotates relative to the base 101 under the influence of the first link arm 124 and the second link arm 125.

[0123] like Figure 19 As shown, the first link arm 124 has a ninth support connection portion 1240 on the side facing the second link arm 125. The second link arm 125 has a tenth support connection portion 1250 on the side facing the first link arm 124. The ninth support connection portion 1240 on the first link arm 124 can be understood as being integrally formed with the first link arm 124, or it can be understood as being fixed to the first link arm 124 by a detachable or non-detachable connection. The tenth support connection portion 1250 on the second link arm 125 can be understood as being integrally formed with the second link arm 125, or it can be understood as being fixed to the second link arm 125 by a detachable or non-detachable connection. The side of the ninth support connection portion 1240 away from the first link arm 124 and the side of the tenth support connection portion 1250 away from the second link arm 125 can be in contact or spaced apart. This application does not specifically limit the shape of the ninth support connection 1240 or the tenth support connection 1250. For example, the ninth support connection 1240 may be cylindrical, prismatic, or the like; the tenth support connection 1250 may be cylindrical, prismatic, or the like. In one embodiment, both the ninth support connection 1240 and the tenth support connection 1250 may be cylindrical.

[0124] One end of the fifth elastic element 106 is sleeved on the ninth support connection portion 1240, and the other end is sleeved on the tenth support connection portion 1250. The extension direction of the ninth support connection portion 1240 is parallel to the axial direction of the first rotating shaft 120, and the extension direction of the tenth support connection portion 1250 is also parallel to the axial direction of the first rotating shaft 120. This allows the compression direction of the fifth elastic element 106, with one end sleeved on the ninth support connection portion 1240 and the other end sleeved on the tenth support connection portion 1250, to be parallel to the axial direction of the first rotating shaft 120. Consequently, the fifth elastic element 106 can compress the first connecting arm 124 and the second connecting arm 125 along the axial direction of the first rotating shaft 120. This improves the reliability of the movement of the first rotating shaft assembly 102 and the reliability of increasing the torque of the rotating shaft mechanism 10 through the fifth elastic element 106.

[0125] Since the first link arm 124 has a ninth support connection 1240 on the side facing the second link arm 125, and the second link arm 125 has a tenth support connection 1250 on the side facing the first link arm 124, one end of the fifth elastic member 106 is sleeved on the ninth support connection 1240 and the other end is sleeved on the tenth support connection 1250. Therefore, the ninth support connection 1240 and the tenth support connection 1250 can jointly support the fifth elastic member 106 so that the fifth elastic member 106 can be stably compressed between the first link arm 124 and the second link arm 125.

[0126] In one possible embodiment, the fifth elastic member 106 is non-rotatably sleeved on the ninth support connection portion 1240, and / or, the fifth elastic member 106 is non-rotatably sleeved on the tenth support connection portion 1250. Optionally, the fifth elastic member 106 is interference-fitted with at least one of the ninth support connection portion 1240 and the tenth support connection portion 1250; or, the fifth elastic member 106 is fixedly connected to at least one of the ninth support connection portion 1240 and the tenth support connection portion 1250; or, the relative rotation between the fifth elastic member 106 and at least one of the ninth support connection portion 1240 and the tenth support connection portion 1250 is restricted by a limiting structure. By non-rotatably fitting the fifth elastic element 106 onto the ninth support connection 1240, and / or non-rotatably fitting the fifth elastic element 106 onto the tenth support connection 1250, the stability of the fifth elastic element 106 can be guaranteed, preventing the fifth elastic element 106 from rotating relative to the first link arm 124 and the second link arm 125. This improves the reliability of the fifth elastic element 106 pressing against the first link arm 124 and the second link arm 125, thereby increasing the friction between the first link arm 124, the second link arm 125 and the first movable seat 121. Furthermore, this improves the effectiveness of increasing the torque of the rotating shaft mechanism 10 through the fifth elastic element 106.

[0127] Please refer to Figure 18 and Figure 19 The second rotating shaft assembly 104 further includes a second rotating shaft 140, a third link arm 144, and a fourth link arm 145. The third link arm 144 and the fourth link arm 145 are disposed between the base 101 and the second movable seat 141 and spaced apart. The third link arm 144 is rotatably connected to the base 101 via the second rotating shaft 140, and is slidably connected to the second movable seat 141. The side of the third link arm 144 opposite to the fourth link arm 145 is in slidable contact with the second movable seat 141. The fourth link arm 145 is rotatably connected to the base 101 via the second rotating shaft 140, and is slidably connected to the second movable seat 141. The side of the fourth link arm 145 opposite to the third link arm 144 is in slidable contact with the second movable seat 141.

[0128] The pivot mechanism 10 also includes a sixth elastic element 107. The sixth elastic element 107 is located in a compressed state between the third link arm 144 and the fourth link arm 145, for pressing the third link arm 144 toward the side away from the fourth link arm 145, and pressing the fourth link arm 145 toward the side away from the third link arm 144.

[0129] In this embodiment, the rotational connection between the third link arm 144 and the base 101, and the rotational connection between the fourth link arm 145 and the base 101, can be referred to the rotational connection between the first link arm 124 and the second link arm 125 and the base 101 described above. The sliding connection between the third link arm 144 and the second movable seat 141, and the sliding connection between the fourth link arm 145 and the second movable seat 141, can be referred to the sliding connection between the first link arm 124 and the second link arm 125 and the first movable seat 121 described above. The characteristics and effects of the sixth elastic element 107 pressing the third link arm 144 and the fourth link arm 145 can be referred to the fifth elastic element 106 pressing the first link arm 124 and the second link arm 125 described above, and will not be repeated here. During the rotation of the third link arm 144 and the fourth link arm 145 relative to the base 101, the compression amount of the sixth elastic element 107 remains unchanged. During the rotation of the third link arm 144 and the fourth link arm 145 relative to the base, the sixth elastic element 107 rotates relative to the base 101 under the drive of the third link arm 144 and the fourth link arm 145.

[0130] Further, please refer to Figure 20 and Figure 21 The rotating shaft mechanism 10 also includes a synchronizing element 108 disposed between the first link arm 124, the second link arm 125, the third link arm 144, and the fourth link arm 145. The synchronizing element 108 includes a first helical surface 181, a second helical surface 182, a third helical surface 183, and a fourth helical surface 184. The first helical surface 181 and the second helical surface 182 are arranged opposite to each other and respectively contact and engage with the first link arm 124 and the second link arm 125. The third helical surface 183 and the fourth helical surface 184 are arranged opposite to each other and respectively contact and engage with the third link arm 144 and the fourth link arm 145. The synchronizing element 108 is used to drive the first link arm 124, the second link arm 125, the third link arm 144, and the fourth link arm 145 to rotate synchronously relative to the base 101.

[0131] It is understood that in this embodiment, when the first link arm 124 and the second link arm 125 rotate relative to the base 101, the synchronizing member 108 can drive the third link arm 144 and the fourth link arm 145 to rotate synchronously and in opposite directions relative to the base 101. When the third link arm 144 and the fourth link arm 145 rotate relative to the base 101, the synchronizing member 108 can drive the first link arm 124 and the second link arm 125 to rotate synchronously and in opposite directions relative to the base 101. In other words, the first rotating shaft assembly 102 and the second rotating shaft assembly 104 rotate synchronously and in opposite directions relative to the base 101. The first helical surface 181 has an opposite orientation to the second helical surface 182. The third helical surface 183 has an opposite orientation to the fourth helical surface 184.

[0132] In one possible embodiment, a portion of the synchronizing element 108 may be sleeved on the first rotating shaft 120, and another portion of the synchronizing element 108 may be sleeved on the second rotating shaft 140. The portion of the synchronizing element 108 sleeved on the first rotating shaft 120 is located between the first link arm 124 and the second link arm 125, and the other portion of the synchronizing element 108 sleeved on the second rotating shaft 140 is located between the third link arm 144 and the fourth link arm 145. This can improve the stability of the synchronizing element 108 and limit the relative sliding between the first link arm 124 and the second link arm 125 through the synchronizing element 108, thereby indirectly improving the reliability of the fifth elastic element 106 in a compressed state between the first link arm 124 and the second link arm 125, and the reliability of the sixth elastic element 107 in a compressed state between the third link arm 144 and the fourth link arm 145.

[0133] The synchronization element 108 enables the first rotating shaft assembly 102 to rotate synchronously relative to the base 101. The synchronization element 108 comprises a first helical surface 181, a second helical surface 182, a third helical surface 183, and a fourth helical surface 184. The first helical surface 181 and the second helical surface 182 are positioned opposite to each other and respectively contact and engage with the first connecting arm 124 and the second connecting arm 125. The third helical surface 183 and the fourth helical surface 184 are positioned opposite to each other and respectively contact and engage with the third connecting arm 144 and the fourth connecting arm 145. This reduces the structural design complexity of the synchronization element 108, decreases its size, and improves the structural compactness of the rotating shaft mechanism 10, thereby facilitating the lightweight and thin design of the foldable electronic device 1000. Furthermore, the synchronizing member 108 provided between the first link arm 124, the second link arm 125, the third link arm 144, and the fourth link arm 145 can further restrict the sliding of the first link arm 124 and the second link arm 125 along the axial direction of the first pivot 120, improve the reliability of the fifth elastic member 106 in a compressed state between the first link arm 124 and the second link arm 125, and restrict the sliding of the third link arm 144 and the fourth link arm 145 along the axial direction of the second pivot 140, thereby improving the reliability of the sixth elastic member 107 in a compressed state between the third link arm 144 and the fourth link arm 145.

[0134] The features mentioned above in the specification, claims, and drawings can be combined in any way as long as they are meaningful within the scope of this application. The advantages and features described with respect to the pivot mechanism 10 are applied accordingly to the foldable housing 100 and the foldable electronic device 1000.

[0135] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application, and such improvements and refinements are also considered to be within the protection scope of this application.

Claims

1. A rotating shaft mechanism, characterized in that, include: The base includes the first friction surface; A first rotating shaft assembly includes a first movable seat, a first rotating arm, and a second rotating arm. The first movable seat is disposed on one side of the base and includes a second friction surface facing the same direction as the first friction surface. The first rotating arm and the second rotating arm are disposed between the base and the first movable seat and spaced apart. The first rotating arm includes a first rotating connecting portion and a second rotating connecting portion connected together. The first rotating connecting portion is rotatably connected to the first movable seat, and the second rotating connecting portion is rotatably connected to the base. The side of the first rotating connecting portion facing away from the second rotating arm includes a third friction surface, and the side of the second rotating connecting portion facing away from the second rotating arm includes a fourth friction surface. The second rotating arm includes a third rotating connecting portion and a fourth rotating connecting portion connected together. The third rotating connecting portion is rotatably connected to the first movable seat, and the fourth rotating connecting portion is rotatably connected to the base. The first elastic component includes a first elastic member and a second elastic member. The first elastic member is in a compressed state between the first rotating connection portion and the third rotating connection portion. The second elastic member is in a compressed state between the second rotating connection portion and the fourth rotating connection portion. The first elastic member and the second elastic member are used to press the first rotating arm away from the second rotating arm so that the third friction surface abuts against the second friction surface and the fourth friction surface abuts against the first friction surface.

2. The rotating shaft mechanism according to claim 1, characterized in that, The base further includes a fifth friction surface facing opposite to the first friction surface, the first movable seat further includes a sixth friction surface facing opposite to the second friction surface, the third rotating connection portion includes a seventh friction surface on the side away from the first rotating arm, the fourth rotating connection portion includes an eighth friction surface on the side away from the first rotating arm, and the first elastic member and the second elastic member are further used to press the second rotating arm toward the side away from the first rotating arm, so that the seventh friction surface abuts against the sixth friction surface and the eighth friction surface abuts against the fifth friction surface.

3. The rotating shaft mechanism according to claim 2, characterized in that, The first friction surface, the second friction surface, the third friction surface, the fourth friction surface, the fifth friction surface, the sixth friction surface, the seventh friction surface, and the eighth friction surface are all planar.

4. The rotating shaft mechanism according to claim 3, characterized in that, The elastic force of the first elastic element is the same as that of the second elastic element. During the rotation of the first rotating arm and the second rotating arm relative to the base, the compression of the first elastic element remains unchanged, and the compression of the second elastic element remains unchanged.

5. The rotating shaft mechanism according to claim 2, characterized in that, The second friction surface, the third friction surface, the sixth friction surface, and the seventh friction surface are planes; the first friction surface, the fourth friction surface, the fifth friction surface, and the eighth friction surface are cam surfaces.

6. The rotating shaft mechanism according to claim 5, characterized in that, During the process of the first rotating arm and the second rotating arm rotating relative to the base from the flattened state to the folded state, the compression of the first elastic element remains unchanged, while the compression of the second elastic element first gradually increases and then gradually decreases.

7. The rotating shaft mechanism according to claim 1, characterized in that, The axis of the first rotating connection coincides with the axis of the third rotating connection, and the axis of the second rotating connection coincides with the axis of the fourth rotating connection.

8. The rotating shaft mechanism according to claim 1, characterized in that, The first rotating arm and the second rotating arm are capable of rotating synchronously relative to the first movable seat and the base, and are capable of driving the first elastic element to rotate relative to the first movable seat and driving the second elastic element to rotate relative to the base.

9. The rotating shaft mechanism according to claim 8, characterized in that, The first rotating connecting part has a first supporting connecting part on the side facing the second rotating arm, and the third rotating connecting part has a second supporting connecting part on the side facing the first rotating arm. One end of the first elastic member is sleeved on the first supporting connecting part, and the other end is sleeved on the second supporting connecting part. The second rotating connecting part has a third supporting connecting part on the side facing the second rotating arm, and the fourth rotating connecting part has a fourth supporting connecting part on the side facing the first rotating arm. One end of the second elastic member is sleeved on the third supporting connecting part, and the other end is sleeved on the fourth supporting connecting part.

10. The rotating shaft mechanism according to claim 9, 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; the second elastic element is non-rotatably sleeved on the third support connection portion, and / or the second elastic element is non-rotatably sleeved on the fourth support connection portion.

11. The rotating shaft mechanism according to any one of claims 1 to 10, characterized in that, The first rotating connection includes a first body and a first connecting shaft disposed on the side of the first body opposite to the second rotating arm. The side of the first body opposite to the second rotating arm forms the third friction surface. The first movable seat has a first shaft hole with an opening facing the second rotating arm. The first rotating arm and the first movable seat are rotatably connected through the cooperation of the first connecting shaft and the first shaft hole. The third rotating connection includes a second body and a second connecting shaft disposed on the side of the second body opposite to the first rotating arm. The first movable seat also has a second shaft hole with an opening facing the first rotating arm. The second rotating arm and the first movable seat are rotatably connected through the cooperation of the second connecting shaft and the second shaft hole.

12. The rotating shaft mechanism according to claim 11, characterized in that, The first connecting shaft has a first end face on the side opposite to the first body, and the first shaft hole has a first bottom wall facing the second rotating arm. The second connecting shaft has a second end face on the side opposite to the second body, and the second shaft hole has a second bottom wall facing the first rotating arm. The first elastic member and the second elastic member are also used to press the first rotating arm toward the side opposite to the second rotating arm so that the first end face abuts against the first bottom wall, and to press the second rotating arm toward the side opposite to the first rotating arm so that the second end face abuts against the second bottom wall.

13. The rotating shaft mechanism according to any one of claims 1 to 10, characterized in that, The base also includes a ninth friction surface, and the rotating shaft mechanism further includes a second rotating shaft assembly and a second elastic component. The second rotating shaft assembly includes a second movable seat, a third rotating arm, and a fourth rotating arm. The second movable seat is located on the other side of the base and includes a tenth friction surface facing the same direction as the ninth friction surface. The third rotating arm and the fourth rotating arm are located between the base and the second movable seat and are spaced apart. The third rotating arm includes a fifth rotating connecting part and a sixth rotating connecting part connected together. The fifth rotating connecting part is rotatably connected to the second movable seat, and the sixth rotating connecting part is rotatably connected to the base. The side of the fifth rotating connecting part away from the fourth rotating arm includes an eleventh friction surface, and the side of the sixth rotating connecting part away from the fourth rotating arm includes a twelfth friction surface. The fourth rotating arm includes a seventh rotating connecting part and an eighth rotating connecting part connected together. The seventh rotating connecting part is rotatably connected to the second movable seat, and the eighth rotating connecting part is rotatably connected to the base. The second elastic component includes a third elastic member and a fourth elastic member. The third elastic member is in a compressed state between the fifth rotating connection and the seventh rotating connection, and the fourth elastic member is in a compressed state between the sixth rotating connection and the eighth rotating connection. The third and fourth elastic members are used to press the third rotating arm away from the fourth rotating arm so that the eleventh friction surface abuts against the tenth friction surface and the twelfth friction surface abuts against the ninth friction surface.

14. The rotating shaft mechanism according to claim 13, characterized in that, The first rotating shaft assembly further includes a first rotating shaft, a first connecting arm, and a second connecting arm. 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 through the first rotating shaft, and the first connecting arm is 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 through the first rotating shaft, and the second connecting arm is 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 second rotating shaft assembly further includes a second rotating shaft, a third link arm, and a fourth link arm. The third link arm and the fourth link arm are disposed between the base and the second movable seat and spaced apart. The third link arm is rotatably connected to the base via the second rotating shaft, and the third link arm is slidably connected to the second movable seat. The side of the third link arm opposite to 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 rotating shaft, and the fourth link arm is slidably connected to the second movable seat. The side of the fourth link arm opposite to the third link arm is in slidable contact with the second movable seat. The rotating shaft mechanism further includes a fifth elastic element and a sixth elastic element. The fifth elastic element is in a compressed state between the first link arm and the second link arm, and is used to press the first link arm away from the second link arm and to press the second link arm away from the first link arm. The sixth elastic element is in a compressed state between the third link arm and the fourth link arm, and is used to press the third link arm away from the fourth link arm and to press the fourth link arm away from the third link arm.

15. The rotating shaft mechanism according to claim 14, 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.

16. 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 15. 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.

17. A foldable electronic device, characterized in that, The invention includes a flexible display screen and the foldable housing as described in claim 16. 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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