Rotating shaft mechanism, foldable shell and foldable electronic equipment

Abstract

The invention provides a rotating shaft mechanism, a foldable shell and foldable electronic equipment. The rotating shaft mechanism comprises a base, a first movable seat, a first connecting rod arm, a first rotating arm, an extrusion piece, a connecting piece and a first elastic piece. The first connecting rod arm and the first rotating arm are arranged between the base and the first movable seat, the first connecting rod arm is rotatably connected with the base and slidably connected with the first movable seat, and the first rotating arm is rotatably connected with the base and rotatably connected with the first movable seat. The extrusion piece is matched with the first connecting rod arm cam, and the connecting piece is rotationally connected with the base. One end of the connecting piece abuts against the side, away from the first connecting rod arm, of the extruding piece, the first elastic piece is located between one side of the connecting piece and the base, and the extruding piece drives the connecting piece to rotate relative to the base in the process that the first connecting rod arm rotates relative to the base so that the first elastic piece can be extruded by the connecting piece to be compressed. According to the rotating shaft mechanism, the foldable shell and the foldable electronic equipment provided by the invention, the torsion can be increased, and the hovering effect is improved.

Description

Technical Field

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

[0002] With the development of foldable electronic devices becoming thinner and smaller, the structural size of the hinge mechanism is correspondingly reduced, resulting in insufficient torque of the hinge mechanism, making it difficult to achieve a good hovering effect. SUMMARY OF THE INVENTION

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

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

[0005] Base;

[0006] The first rotating shaft assembly comprises a first movable seat, a first connecting rod arm and a first rotating arm, wherein the first movable seat is spaced apart from the base, the first connecting rod arm is disposed between the base and the first movable seat, the first connecting rod arm is rotatably connected to the base and slidably connected to the first movable seat, the first rotating arm is disposed between the base and the first movable seat, the first rotating arm is rotatably connected to the base and rotatably connected to the first movable seat; and

[0007] The torque assembly includes an extrusion member, a connection member and a first elastic member. The extrusion member is carried on the base and cooperates with the first connecting rod arm cam. The connection member is carried on the base and is rotatably connected to the base. One end of the connection member abuts against a side of the extrusion member away from the first connecting rod arm. The first elastic member is between one side of the connection member and the base. The extrusion member drives the connection member to rotate relative to the base during the rotation of the first connecting rod arm relative to the base. The first elastic member is squeezed by the connection member and compressed during the rotation of the connection member relative to the base.

[0008] On the other hand, the present application also provides a foldable shell, comprising a first shell, a second shell and the above-mentioned hinge mechanism, wherein the first shell is arranged on one side of the hinge mechanism, and the second shell is arranged on the other side of the hinge mechanism, and the first shell and the second shell can move towards each other to fold, or the first shell and the second shell can move away from each other to flatten.

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

[0010] The hinge mechanism provided by the present application includes a base, a first hinge assembly and a torque assembly. The first hinge assembly includes a first movable base, a first connecting rod arm and a first rotating arm. The torque assembly includes an extrusion member, a connecting member and a first elastic member. Since the first connecting rod arm is rotatably connected to the base, the extrusion member cooperates with the first connecting rod arm cam, the connecting member is rotatably connected to the base, and one end of the connecting member abuts against the side of the extrusion member away from the first connecting rod arm. Therefore, during the rotation of the first connecting rod arm relative to the base, the extrusion member can drive the connecting member to rotate relative to the base. The first elastic member is between one side of the connecting member and the base. Therefore, during the rotation of the connecting member relative to the base, the first elastic member will be squeezed by the connecting member and compressed. In this way, the elastic force of the first elastic member can be converted into the torque of the hinge mechanism, so that the torque of the hinge mechanism is increased and the hovering effect is improved. The foldable shell and foldable electronic device provided by the present application include a hinge mechanism, so the torque is large and the hovering effect is better. Brief Description of the Figures

[0011] In order to more clearly illustrate the technical solution of the embodiment of the present application, the following is a brief introduction to the drawings required for use in the embodiment.

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

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

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

[0015] Figure 4 For Figure 1 Structural schematic diagram of a foldable housing in a foldable electronic device shown;

[0016] Figure 5 For Figure 1 Schematic diagram of the structure of a flexible display screen in a foldable electronic device;

[0017] Figure 6 For Figure 5 Schematic diagram of the structure of the flexible display screen in a water drop shape when in a folded state;

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

[0019] Figure 8 is Figure 7 a schematic exploded view of the rotating shaft mechanism shown;

[0020] Figure 9 is Figure 7 a schematic structural diagram of the torsion assembly of the rotating shaft mechanism shown further including a second elastic member;

[0021] Figure 10 is Figure 9 a schematic structural diagram of the base of the rotating shaft mechanism shown including a connected bearing portion and a limiting portion;

[0022] Figure 11 is Figure 10 a schematic structural diagram of the limiting portion of the rotating shaft mechanism shown having an arc groove and the first rotating arm including an arc block;

[0023] Figure 12 It is a schematic structural diagram of the rotating shaft mechanism provided by the embodiment of the present application when in a flattened state;

[0024] Figure 13 is Figure 12 a schematic exploded view of the rotating shaft mechanism shown.

[0025] Description of reference numerals: Foldable electronic device 1000; Flexible display screen 200; Foldable housing 100; First housing 11; Second housing 12; Rotating shaft 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 rotating shaft assembly 102; Torsion assembly 103; First movable seat 121; First connecting rod arm 122; First rotating arm 123; Extrusion member 131; Connecting member 132; First elastic member 133; First cam surface 1310; Second cam surface 1221; Second elastic member 134; Bearing portion 110; Limiting portion 112; First abutting portion 1320; Rotating connection portion 1321; Second abutting portion 1322; Arc groove 112a; Arc block 123a; Second rotating shaft assembly 104; Second movable seat 141; Second connecting rod arm 142; Second rotating arm 143; Synchronizing member 105; First spiral surface 151; Second spiral surface 152; Third spiral surface 153; Fourth spiral surface 154; First sub-connecting rod portion 1222; Second sub-connecting rod portion 1223; Third sub-connecting rod portion 1224; Fourth sub-connecting rod portion 1422; Fifth sub-connecting rod portion 1423; Sixth sub-connecting rod portion 1424; First rotating shaft 124; Second rotating shaft 144; First extrusion portion 1311; Second extrusion portion 1312; Third elastic member 135; Fourth elastic member 136. Detailed implementation manners

[0026] Next, the technical solutions provided in the present application will be described clearly and completely with reference to the accompanying drawings. Obviously, the embodiments described in the present application are only a part of the embodiments, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art without creative efforts based on the embodiments described in the present application belong to the protection scope of the present application.

[0027] In the present application, the mention of "embodiment" or "implementation manner" means that the specific features, structures or characteristics described in combination with the embodiment or implementation manner may be included in at least one embodiment of the present application. The appearance of this phrase in various positions in the specification does not necessarily refer to the same embodiment, nor is it an exclusive, independent or alternative embodiment that is mutually exclusive with other embodiments. Those skilled in the art can explicitly and implicitly understand that the embodiments described in the present application can be combined with other embodiments.

[0028] The terms "first", "second", etc. in the description and claims of the present application and the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order; in addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion.

[0029] Please refer toFigures 1 to 3 , Figure 1 is a schematic structural diagram of the foldable electronic device 1000 provided by the embodiment of the present application when in a flattened state. Figure 2 is a schematic structural diagram of the foldable electronic device 1000 provided by the embodiment of the present application when in a folded state. Figure 3 is a schematic structural diagram of the foldable electronic device 1000 provided by the embodiment of the present application when in a hovering state. The foldable electronic device 1000 provided by the present application can be a foldable mobile phone, a foldable tablet computer, a foldable e-book, etc. In the embodiment of the present application, a foldable mobile phone is taken as an example. The foldable electronic device 1000 has a flattened state, a folded state, and one or more hovering states. During use, the foldable electronic device 1000 can switch between the flattened state, the folded state, and the hovering state.

[0030] 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 the flattened state, the flexible display screen 200 and the foldable housing 100 are in the flattened state; when the foldable electronic device 1000 is in the folded state, the flexible display screen 200 and the foldable housing 100 are in the folded state; when the foldable electronic device 1000 is in the hovering state, the flexible display screen 200 and the foldable housing 100 are in the hovering state.

[0031] As Figure 4 shown, Figure 4 is Figure 1 a schematic structural diagram of the foldable housing 100 in the foldable electronic device 1000 shown. The foldable housing 100 includes a first housing 11, a second housing 12, and a rotating shaft mechanism 10. The first housing 11 is disposed on one side of the rotating shaft mechanism 10, and the second housing 12 is disposed on the other side of the rotating shaft mechanism 10. In the embodiment of the present application, the first housing 11 and the second housing 12 are disposed on opposite sides of the rotating shaft mechanism 10. The present application does not specifically limit the structures of the first housing 11 and the second housing 12. In a possible embodiment, the first housing 11 may include a rectangular frame body, and the second housing 12 may include a rectangular frame body. 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 flatten. Specifically, taking Figure 4 the foldable housing 100 shown as an example, during the process of the foldable housing 100 switching from the flattened state to the folded state, the first housing 11 gradually rotates clockwise, and the second housing 12 gradually rotates counterclockwise; during the process of the foldable housing 100 switching from the folded state to the flattened state, the first housing 11 gradually rotates counterclockwise, and the second housing 12 gradually rotates clockwise.

[0032] It can be understood that when the foldable housing 100 is in the flattened state, the rotating shaft mechanism 10 is in the flattened state; when the foldable housing 100 is in the folded state, the rotating shaft mechanism 10 is in the folded state; when the foldable housing 100 is in the folded state, the rotating shaft mechanism 10 is in the folded state; when the foldable housing 100 is in the hovering state, the rotating shaft mechanism 10 is in the hovering state. Among them, when the foldable housing 100 is in the flattened state, it can be understood that the angle between the first housing 11 and the second housing 12 is 180° or close to 180°. When the foldable housing 100 is in the folded state, it can be understood that the angle between the first housing 11 and the second housing 12 is 0° or close to 0°. When the foldable housing 100 is in the hovering state, it can be understood that the angle between the first housing 11 and the second housing 12 is any angle between 0° and 180°.

[0033] Please refer to Figure 4 and Figure 5 , the flexible display screen 200 includes a first non-bending display area 21, a bending display area 22, and a second non-bending display area 23 arranged in sequence. The first non-bending display area 21 covers the first 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.

[0034] The flexible display screen 200 can be a flexible organic light-emitting diode (OLED) display screen. The first non-bending display area 21 and the first housing 11 can be fixedly connected. The second non-bending display area 23 and the second housing 12 can be fixedly connected. 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 the flattened state, the folded state, and the hovering state, the first non-bending display area 21 and the second non-bending display area 23 do not bend. The bending display area 22 and the rotating shaft mechanism 10 can be unconnected or partially connected. The bending display area 22 is flattened when the flexible display screen 200 is in the flattened state, and the bending display area 22 is bent when the flexible display screen 200 is in the folded state.

[0035] In a possible embodiment, such as Figure 6As shown, when the flexible display screen 200 is in the folded state, it can be in a water droplet shape. Specifically, the bent display area 22 may include a first sub-bent display area 221, a second sub-bent display area 222, and a third sub-bent display area 223 arranged in sequence. The first sub-bent display area 221 is adjacent to the first non-bent display area 21. The third sub-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 display area 221, a second sub-bent display area 222, a third sub-bent display area 223, and a second non-bent display area 23 arranged in sequence. When the flexible display screen 200 is in the folded state, the first non-bent display area 21 is opposite to the second non-bent display area 23, and the dimension of the line connecting the end of the first sub-bent display area 221 far from the second sub-bent display area 222 and the end of the third sub-bent display area 223 far from the second sub-bent display area 222 is L1, and the dimension of the line connecting the end of the first sub-bent display area 221 close to the second sub-bent display area 222 and the end of the third sub-bent display area 223 close to the second sub-bent display area 222 is L2, and L1 is less than L2. In this embodiment, the first sub-bent display area 221 and the third sub-bent display area 223 of the bent display area 22 can be connected to the rotating shaft mechanism 10 and bent respectively under the action of the rotating shaft mechanism 10, and the second sub-bent display area 222 of the bent display area 22 is not connected to the rotating shaft mechanism 10 to freely bend.

[0036] Please refer to Figure 7 and Figure 8 , Figure 7 which is a schematic structural diagram of one side of the rotating shaft mechanism 10 provided by the embodiment of the present application when it is in the flattened state, Figure 8 is Figure 7 the exploded schematic diagram of the rotating shaft mechanism 10 shown in. The rotating shaft mechanism 10 includes a base 101, a first rotating shaft assembly 102, and a torsion assembly 103.

[0037] Among them, the base 101 remains stationary when the rotating shaft mechanism 10 switches between the flattened state, the hovering state, and the folded state.

[0038] The first rotating shaft assembly 102 includes a first movable seat 121, a first connecting rod arm 122, and a first rotating arm 123. The first movable seat 121 is spaced from the base 101. When the rotating shaft mechanism 10 is in a flattened state, the first movable seat 121 is provided on one side of the base 101. In the embodiment of the present application, taking the example that when the rotating shaft mechanism 10 is in a flattened state, the first movable seat 121 is spaced on the left side of the base 101. Of course, in other embodiments, when the rotating shaft mechanism 10 is in a flattened state, the first movable seat 121 can be spaced on the right side of the base 101. The first movable seat 121 and the first housing 11 can be fixedly connected. For example: The first movable seat 121 and the first housing 11 can be fixedly connected by means such as bonding, welding, bolt connection, snap connection, etc. The first connecting rod arm 122 is provided between the base 101 and the first movable seat 121. The first rotating arm 123 is provided between the base 101 and the first movable seat 121. The first connecting rod arm 122 and the first rotating arm 123 are spaced from each other.

[0039] The first connecting rod arm 122 is rotatably connected to the base 101 and slidably connected to the first movable seat 121. For example: The first connecting rod arm 122 is rotatably connected to the base 101 through the cooperation of a rotating shaft and a shaft hole. Optionally, the first connecting rod arm 122 is provided with a shaft hole and the base 101 is provided with a rotating shaft; or, the first connecting rod arm 122 is provided with a rotating shaft and the base 101 is provided with a shaft hole. Among them, the base 101 being provided with a rotating shaft can be understood not only as the base 101 and the rotating shaft being integrally formed, but also as the base 101 and the rotating shaft being fixedly connected, that is, there is no relative movement between the base 101 and the rotating shaft. The first connecting rod arm 122 being provided with a rotating shaft can be understood not only as the first connecting rod arm 122 and the rotating shaft being integrally formed, but also as the first connecting rod arm 122 and the rotating shaft being fixedly connected, that is, there is no relative movement between the first connecting rod arm 122 and the rotating shaft. The first connecting rod arm 122 and the first movable seat 121 are slidably connected through the cooperation of a slider and a chute. Optionally, the first connecting rod arm 122 is provided with a slider and the first movable seat 121 is provided with a chute; or, the first connecting rod arm 122 is provided with a chute and the first movable seat 121 is provided with a slider.

[0040] The first rotating arm 123 is rotatably connected to the base 101 and is rotatably connected to the first movable seat 121. For example, the first rotating arm 123 and the base 101 are rotatably connected through the cooperation of an arc groove and an arc block. Optionally, the first rotating arm 123 is provided with an arc block, and the base 101 is provided with an arc groove; or, the first rotating arm 123 is provided with an arc groove, and the base 101 is provided with an arc block. The first rotating arm 123 and the first movable seat 121 are rotatably connected through the cooperation of a rotating shaft and a shaft hole. Optionally, the first rotating arm 123 is provided with a shaft hole, and the first movable seat 121 is provided with a rotating shaft; or, the first rotating arm 123 is provided with a rotating shaft, and the first movable seat 121 is provided with a shaft hole. Among them, the fact that the first movable seat 121 is provided with a rotating shaft can be understood not only as the first movable seat 121 and the rotating shaft being integrally formed, but also as the first movable seat 121 and the rotating shaft being fixedly connected, that is, there is no relative movement between the first movable seat 121 and the rotating shaft. The fact that the first rotating arm 123 is provided with a rotating shaft can be understood not only as the first rotating arm 123 and the rotating shaft being integrally formed, but also as the first rotating arm 123 and the rotating shaft being fixedly connected, that is, there is no relative movement between the first rotating arm 123 and the rotating shaft.

[0041] In the embodiment of the present application, the first connecting rod arm 122 is rotatably connected to the base 101 and is slidably connected to the first movable seat 121, and the first rotating arm 123 is rotatably connected to the base 101 and is rotatably connected to the first movable seat 121, forming a crank-slider mechanism, which can make the flexible display screen 200 in a folded state be in a water droplet shape, and at the same time can make the length change of the rotating shaft mechanism 10 adapt to the length change of the flexible display screen 200, so as to avoid stretching or squeezing the flexible display screen 200 during the bending process of the rotating shaft mechanism 10.

[0042] The torsion assembly 103 includes an extrusion member 131, a connecting member 132, and a first elastic member 133. The extrusion member 131 is carried on the base 101. Specifically, the extrusion member 131 can be directly carried on the base 101 or indirectly carried on the base 101 through other components. When the extrusion member 131 is directly carried on the base 101, the extrusion member 131 contacts the base 101; when the extrusion member 131 is indirectly carried on the base 101 through other components, the extrusion member 131 may or may not contact the base 101. The extrusion member 131 is in cam cooperation with the first link arm 122. In a possible embodiment, the extrusion member 131 has a first cam surface 1310, and the first link arm 122 has a second cam surface 1221. The first cam surface 1310 contacts the second cam surface 1221 to enable the extrusion member 131 to be in cam cooperation with the first link arm 122. Among them, the first cam surface 1310 may include a convex surface and a concave surface. The second cam surface 1221 may include a convex surface and a concave surface. Since the extrusion member 131 is in cam cooperation with the first link arm 122, the extrusion member 131 will be driven to slide relative to the base 101 during the rotation of the first link arm 122 relative to the base 101. In the embodiment of the present application, the extrusion member 131 slides axially along the axis of the rotating shaft mechanism 10. The axis of the rotating shaft mechanism 10 can refer to the Figure 7 direction of line M in the attached drawing. The axis of the rotating shaft mechanism 10 is also the axis direction of the rotation of the first link arm 122 relative to the base 101.

[0043] The connecting member 132 is carried on the base 101 and is rotatably connected to the base 101. In the embodiment of the present application, the connecting member 132 can be directly carried on the base 101. In other words, the connecting member 132 is in contact with the base 101. The connecting member 132 and the base 101 can be rotatably connected through the cooperation of the rotating shaft and the shaft hole. Optionally, the connecting member 132 is provided with a shaft hole, and the base 101 is provided with a rotating shaft; or, the connecting member 132 is provided with a rotating shaft, and the base 101 is provided with a shaft hole. One end of the connecting member 132 abuts against the side of the extrusion member 131 away from the first connecting rod arm 122. It can be understood that one end of the connecting member 132 is in contact with the side of the extrusion member 131 away from the first connecting rod arm 122. Since the connecting member 132 is rotatably connected to the base 101, the connecting member 132 can only rotate relative to the base 101, and cannot slide relative to the base 101, while the extrusion member 131 will slide relative to the base 101 under the action of the first link arm 122, and one end of the connecting member 132 abuts against the side of the extrusion member 131 away from the first link arm 122. Therefore, the extrusion member 131 will drive the connecting member 132 to rotate relative to the base 101 during the sliding process relative to the base 101 under the action of the first link arm 122. In short, the extrusion member 131 drives the connecting member 132 to rotate relative to the base 101 during the rotation of the first link arm 122 relative to the base 101. Among them, the connecting member 132 can be tilted relative to the side of the extrusion member 131 away from the first link arm 122. In this way, the connecting member 132 can be better driven to rotate relative to the base 101 by the extrusion member 131.

[0044] The first elastic member 133 may be a spring, a bellows, etc. In the following embodiments, the first elastic member 133 is taken as an example of a spring. The first elastic member 133 is between one side of the connecting member 132 and the base 101. It can be understood that one end of the first elastic member 133 abuts against one side of the connecting member 132, and the other end of the first elastic member 133 abuts against one side of the base 101 facing the connecting member 132. In one possible embodiment, when the rotating shaft mechanism 10 is in a flattened state or a folded state, the first elastic member 133 may be in a compressed state between one side of the connecting member 132 and the base 101. In another possible embodiment, when the rotating shaft mechanism 10 is in a flattened state or a folded state, the first elastic member 133 may be in an original length state between one side of the connecting member 132 and the base 101. Since the first elastic member 133 is between the connecting member 132 and the base 101, the connecting member 132 will generate a force on the first elastic member 133 during the rotation relative to the base 101, so that the first elastic member 133 is deformed. In order to increase the torque of the shaft mechanism 10 in the present application, the connecting member 132 will generate an extrusion force on the first elastic member 133 during the rotation relative to the base 101, so that the first elastic member 133 is compressed. In short, the first elastic member 133 is compressed by the squeezing of the connecting member 132 during the rotation of the connecting member 132 relative to the base 101.

[0045] The rotating shaft mechanism 10 provided in the present application includes a base 101, a first rotating shaft assembly 102 and a torsion assembly 103. The first rotating shaft assembly 102 includes a first movable seat 121, a first connecting rod arm 122 and a first rotating arm 123. The torsion assembly 103 includes an extrusion member 131, a connecting member 132 and a first elastic member 133. Since the first connecting rod arm 122 is rotatably connected to the base 101, the extrusion member 131 cooperates with the cam of the first connecting rod arm 122, and the connecting member 132 is rotatably connected to the base 101, and one end of the connecting member 132 abuts against the back of the extrusion member 131. The first connecting rod 122 is away from one side of the first connecting rod arm 122, so the extrusion member 131 can drive the connecting member 132 to rotate relative to the base 101 during the rotation of the first connecting rod arm 122 relative to the base 101, and the first elastic member 133 is between one side of the connecting member 132 and the base 101, so the first elastic member 133 will be squeezed by the connecting member 132 and compressed during the rotation of the connecting member 132 relative to the base 101, so that the elastic force of the first elastic member 133 can be converted into the torque of the rotating shaft mechanism 10, so that the torque of the rotating shaft mechanism 10 is increased, and the hovering effect is improved. The foldable housing 100 and the foldable electronic device 1000 provided in the present application include the rotating shaft mechanism 10, so the torque is larger and the hovering effect is better.

[0046] If Figure 9As shown, the torsion assembly 103 further includes a second elastic member 134. The second elastic member 134 can be a spring, a bellows, etc. In the following embodiments, the second elastic member 134 is taken as an example of a spring. The second elastic member 134 is located between the other side of the connecting member 132 and the base 101. It can be understood that one end of the second elastic member 134 abuts against the other side of the connecting member 132, and the other end of the second elastic member 134 abuts against the side of the base 101 facing the connecting member 132. In the embodiment of the present application, the second elastic member 134 and the first elastic member 133 are respectively located on opposite sides of the connecting member 132. In a possible embodiment, when the rotating shaft mechanism 10 is in a flattened state or a folded state, the second elastic member 134 can be in a compressed state between the other side of the connecting member 132 and the base 101. In another possible embodiment, when the rotating shaft mechanism 10 is in a flattened state or a folded state, the second elastic member 134 can be in an original length state between the other side of the connecting member 132 and the base 101. Since the second elastic member 134 is located between the connecting member 132 and the base 101, a force will be generated on the second elastic member 134 during the rotation of the connecting member 132 relative to the base 101, thereby deforming the second elastic member 134. In the present application, to increase the torsion of the rotating shaft mechanism 10, a squeezing force will be generated on the second elastic member 134 during the rotation of the connecting member 132 relative to the base 101, thereby compressing the second elastic member 134. In short, the second elastic member 134 is compressed by the squeezing of the connecting member 132 during the rotation of the connecting member 132 relative to the base 101.

[0047] In this embodiment, the number of elastic members in the torsion assembly 103 is increased, and the elastic forces of both the first elastic member 133 and the second elastic member 134 can be converted into the torsion of the rotating shaft mechanism 10. Therefore, the torsion of the rotating shaft mechanism 10 can be further increased. In addition, both the first elastic member 133 and the second elastic member 134 are compressed by the squeezing of the connecting member 132. Therefore, the number of connecting members in the torsion assembly 103 can be reduced, and while increasing the torsion of the rotating shaft mechanism 10, the structure of the rotating shaft mechanism 10 can be simplified, and the structural compactness of the rotating shaft mechanism 10 can be improved.

[0048] Such as Figure 10As shown, the base 101 includes a connected bearing portion 110 and a limiting portion 112. In the present application, the bearing portion 110 and the limiting portion 112 being connected can mean that the bearing portion 110 and the limiting portion 112 are connected in an integral manner, or can mean that the bearing portion 110 and the limiting portion 112 are fixedly connected in a detachable or non-detachable manner. It can be understood that when the rotating shaft mechanism 10 switches between the flattened state, the suspended state and the folded state, there is no relative movement between the bearing portion 110 and the limiting portion 112. The bearing portion 110 is used to bear the extrusion member 131 and the connecting member 132. It can be understood that the extrusion member 131 and the connecting member 132 are supported on the bearing portion 110. An accommodating space 113 is formed between the bearing portion 110, the limiting portion 112 and the extrusion member 131. The connecting member 132 is located in the accommodating space 113. In the embodiment of the present application, the limiting portion 112 and the extrusion member 131 are arranged opposite to each other along the axial direction of the rotating shaft mechanism 10.

[0049] Wherein, the connecting member 132 may be a connecting rod. The connecting member 132 includes a first abutting portion 1320, a rotating connecting portion 1321, and a second abutting portion 1322 which are connected in sequence. The first abutting portion 1320, the rotating connecting portion 1321, and the second abutting portion 1322 are connected in sequence, that is, the first abutting portion 1320, the rotating connecting portion 1321, and the second abutting portion 1322 are arranged in sequence, and the first abutting portion 1320 is connected to the rotating connecting portion 1321, and the rotating connecting portion 1321 is connected to the second abutting portion 1322. Wherein, the first abutting portion 1320 and the rotating connecting portion 1321 may be connected in an integral manner, or may be fixedly connected in a detachable or non-detachable manner. The rotating connecting portion 1321 and the second abutting portion 1322 may be connected in an integral manner, or may be fixedly connected in a detachable or non-detachable manner. It can be understood that when the rotating connecting member 132 rotates relative to the base 101, the first abutting portion 1320, the rotating connecting portion 1321 and the second abutting portion 1322 all rotate relative to the base 101.

[0050] The first abutting portion 1320 abuts against the side of the extrusion member 131 away from the first link arm 122. The second abutting portion 1322 abuts against the side of the limiting portion 112 facing the extrusion member 131. It can be understood that one end of the connecting member 132 abuts against the extrusion member 131, and the other end of the connecting member 132 abuts against the limiting portion 112 of the base 101. By making the first abutment portion 1320 abut against the side of the extrusion member 131 away from the first connecting rod arm 122 and the second abutment portion 1322 abut against the side of the limiting portion 112 toward the extrusion member 131, the connecting member 132 can be restricted between the extrusion member 131 and the limiting portion 112 of the base 101, thereby preventing the connecting member 132 from sliding relative to the base 101 under the action of the extrusion member 131, thereby improving the reliability of the connecting member 132 squeezing the first elastic member 133 and the second elastic member 134 to compress the first elastic member 133 and the second elastic member 134.​

[0051] The rotating connection part 1321 is rotatably connected to the base 101. In a possible implementation, the rotating connection part 1321 has a shaft hole. The shaft hole can be a through hole or a blind hole. In the embodiment of the present application, the shaft hole is taken as an example of a through hole. The bearing part 110 includes a connecting shaft. The connecting shaft can be cylindrical. The connecting member 132 and the base 101 are rotatably connected through the cooperation of the shaft hole and the connecting shaft.

[0052] The connecting member 132 and the base 101 are rotatably connected through the cooperation of the shaft hole and the connecting shaft, which can simplify the assembly difficulty of the connecting member 132 and the base 101. In addition, the rotating connection part 1321 is located between the first abutting part 1320 and the second abutting part 1322. The connecting member 132 and the base 101 are rotatably connected through the cooperation of the shaft hole of the rotating connection part 1321 and the connecting shaft of the bearing part 110. While realizing the rotational connection between the connecting member 132 and the base 101, it can further limit the sliding, etc. of the connecting member 132 relative to the base 101, so as to improve the reliability of the connecting member 132 squeezing the first elastic member 133 and the second elastic member 134, causing the first elastic member 133 and the second elastic member 134 to be compressed.

[0053] As Figure 11 shown, the side of the limiting part 112 facing away from the pressing part 131 has an arc groove 112a. The first rotating arm 123 includes an arc block 123a. The first rotating arm 123 and the base 101 are rotatably connected through the cooperation of the arc groove 112a and the arc block 123a.

[0054] By rotatably connecting the first rotating arm 123 with the limiting part 112 of the base 101, the structural compactness of the rotating shaft mechanism 10 can be improved, and the axial dimension of the rotating shaft mechanism 10 can be reduced. In addition, the side of the limiting part 112 facing away from the pressing part 131 has an arc groove 112a, the first rotating arm 123 includes an arc block 123a, and the first rotating arm 123 and the base 101 are rotatably connected through the cooperation of the arc groove 112a and the arc block 123a, which is beneficial to the design of the axis of the virtual rotating shaft of the first rotating arm 123 and can reduce the extrusion and pulling of the flexible display screen 200.

[0055] During the process of the first link arm 122 rotating from the flattened state to the folded state relative to the base 101, the compression amount of the first elastic member 133 first gradually increases and then gradually decreases, and the compression amount of the second elastic member 134 first gradually increases and then gradually decreases. It can be understood that during the process of the first link arm 122 rotating from the flattened state to the folded state relative to the base 101, the extrusion force of the first link arm 122 on the first elastic member 133 first gradually increases and then gradually decreases, and the extrusion force of the first link arm 122 on the second elastic member 134 first gradually increases and then gradually decreases. Among them, the elastic coefficient of the first elastic member 133 and the elastic coefficient of the second elastic member 134 can be the same or different. In the same state, the compression amount of the first elastic member 133 and the compression amount of the second elastic member 134 can be the same or different.

[0056] Since during the process of the first link arm 122 rotating from the flattened state to the folded state relative to the base 101, the compression amount of the first elastic member 133 first gradually increases and then gradually decreases, and the compression amount of the second elastic member 134 first gradually increases and then gradually decreases, the extrusion force of the extrusion member 161 on the first elastic member 133 and the second elastic member 134 in the rotating shaft mechanism 10 of the present application is relatively large, so that the torque generated by the torque assembly 103 is also relatively large, which can ensure the hover design of the rotating shaft mechanism 10. Of course, in other possible embodiments, during the process of the first link arm 122 rotating from the flattened state to the folded state relative to the base 101, the compression amounts of the first elastic member 133 and the second elastic member 134 may also have other change processes.

[0057] In a possible implementation, the extrusion member 131 may include a plurality of first convex portions and a plurality of first concave portions. The first convex portions and the first concave portions are arranged adjacent to each other. For example, the extrusion member 131 may include two first convex portions and two first concave portions; alternatively, the extrusion member 131 may include three first convex portions and three first concave portions. The first link arm 122 may include a plurality of second convex portions and a plurality of second concave portions. The second convex portions and the second concave portions are arranged adjacent to each other. For example, the first link arm 122 may include two second convex portions and two second concave portions; alternatively, the first link arm 122 may include three second convex portions and three second concave portions. When the rotating shaft mechanism 10 is in the flattened state, the first convex portions cooperate with the second concave portions, and the first concave portions cooperate with the second convex portions. When the rotating shaft mechanism 10 is in the folded state, the first convex portions cooperate with the second concave portions, and the first concave portions cooperate with the second convex portions. When the rotating shaft mechanism 10 is in the hovering state, the first convex portions cooperate with the second convex portions, and the first concave portions cooperate with the second concave portions. This implementation can achieve that during the process of the first link arm 122 rotating relative to the base 101 from the flattened state to the folded state, the extrusion force of the extrusion member 161 on the first elastic member 133 and the second elastic member 134 first gradually increases and then gradually decreases, so that the compression amount of the first elastic member 133 first gradually increases and then gradually decreases, and the compression amount of the second elastic member 134 first gradually increases and then gradually decreases.

[0058] Please refer to Figure 12 and Figure 13 , Figure 12 which is a schematic structural diagram of the rotating shaft mechanism 10 provided by the embodiment of the present application when it is in the flattened state, Figure 13 is Figure 12 an exploded schematic diagram of the rotating shaft mechanism 10 shown in the figure. The rotating shaft mechanism 10 further includes a second rotating shaft assembly 104.

[0059] The second rotating shaft assembly 104 includes a second movable seat 141, a second link arm 142, and a second rotating arm 143. The second movable seat 141 is spaced apart from the base 101. When the rotating shaft mechanism 10 is in the flattened state, the second movable seat 141 is provided on the other side of the base 101. In the embodiment of the present application, it is taken as an example that when the rotating shaft mechanism 10 is in the flattened state, the second movable seat 141 is spaced apart and provided on the right side of the base 101. Of course, in other embodiments, when the rotating shaft mechanism 10 is in the flattened state, the second movable seat 141 may be spaced apart and provided on the left side of the base 101. The second movable seat 141 may be fixedly connected to the second housing 12. For example: The second movable seat 141 and the second housing 12 may be fixedly connected by means such as bonding, welding, bolt connection, snap connection, etc. The second link arm 142 is provided between the base 101 and the second movable seat 141. The second rotating arm 143 is provided between the base 101 and the second movable seat 141. The second link arm 142 and the second rotating arm 143 are spaced apart from each other.

[0060] The second link arm 142 is rotatably connected to the base 101 and slidably connected to the second movable seat 141. For example, the second link arm 142 is rotatably connected to the base 101 by the cooperation of a rotating shaft and a shaft hole. Optionally, the second link arm 142 is provided with a shaft hole and the base 101 is provided with a rotating shaft; or, the second link arm 142 is provided with a rotating shaft and the base 101 is provided with a shaft hole. Among them, the fact that the base 101 is provided with a rotating shaft can be understood not only as the base 101 and the rotating shaft being integrally formed, but also as the base 101 and the rotating shaft being fixedly connected, that is, there is no relative movement between the base 101 and the rotating shaft. The fact that the second link arm 142 is provided with a rotating shaft can be understood not only as the second link arm 142 and the rotating shaft being integrally formed, but also as the second link arm 142 and the rotating shaft being fixedly connected, that is, there is no relative movement between the second link arm 142 and the rotating shaft. The second link arm 142 and the second movable seat 141 are slidably connected by the cooperation of a slider and a chute. Optionally, the second link arm 142 is provided with a slider and the second movable seat 141 is provided with a chute; or, the second link arm 142 is provided with a chute and the second movable seat 141 is provided with a slider.

[0061] The second rotating arm 143 is rotatably connected to the base 101 and rotatably connected to the second movable seat 141. For example, the second rotating arm 143 is rotatably connected to the base 101 by the cooperation of an arc groove and an arc block. Optionally, the second rotating arm 143 is provided with an arc block and the base 101 is provided with an arc groove; or, the second rotating arm 143 is provided with an arc groove and the base 101 is provided with an arc block. The second rotating arm 143 and the second movable seat 141 are rotatably connected by the cooperation of a rotating shaft and a shaft hole. Optionally, the second rotating arm 143 is provided with a shaft hole and the second movable seat 141 is provided with a rotating shaft; or, the second rotating arm 143 is provided with a rotating shaft and the second movable seat 141 is provided with a shaft hole. Among them, the fact that the second movable seat 141 is provided with a rotating shaft can be understood not only as the second movable seat 141 and the rotating shaft being integrally formed, but also as the second movable seat 141 and the rotating shaft being fixedly connected, that is, there is no relative movement between the second movable seat 141 and the rotating shaft. The fact that the second rotating arm 143 is provided with a rotating shaft can be understood not only as the second rotating arm 143 and the rotating shaft being integrally formed, but also as the second rotating arm 143 and the rotating shaft being fixedly connected, that is, there is no relative movement between the second rotating arm 143 and the rotating shaft.

[0062] In the embodiment of the present application, the second link arm 142 is rotatably connected to the base 101 and slidably connected to the second movable seat 141, and the second rotating arm 143 is rotatably connected to the base 101 and rotatably connected to the second movable seat 141, forming a crank-slider mechanism, which can make the flexible display screen 200 in a folded state be in a water droplet shape, and at the same time can make the length change of the rotating shaft mechanism 10 adapt to the length change of the flexible display screen 200, so as to avoid stretching or squeezing the flexible display screen 200 during the bending process of the rotating shaft mechanism 10.

[0063] The rotating shaft mechanism 10 further includes a synchronizing member 105 disposed between the first link arm 122 and the second link arm 142. The synchronizing member 105 is used to drive the first link arm 122 and the second link arm 142 to rotate synchronously and in opposite directions relative to the base 101. In a possible implementation manner, the synchronizing member 105 includes a first helical surface 151, a second helical surface 152, a third helical surface 153, and a fourth helical surface 154. The first link arm 122 includes a first sub-link portion 1222, a second sub-link portion 1223, and a third sub-link portion 1224 connected to the first sub-link portion 1222 and the second sub-link portion 1223. Both the first sub-link portion 1222 and the second sub-link portion 1223 are rotatably connected to the base 101, and there is a gap between the first sub-link portion 1222 and the second sub-link portion 1223. The third sub-link portion 1224 is slidably connected to the first movable seat 121. The first helical surface 151 and the second helical surface 152 are arranged back to back and are respectively in contact and cooperation with the first sub-link portion 1222 and the second sub-link portion 1223. The second link arm 142 includes a fourth sub-link portion 1422, a fifth sub-link portion 1423, and a sixth sub-link portion 1424 connected to the fourth sub-link portion 1422 and the fifth sub-link portion 1423. Both the fourth sub-link portion 1422 and the fifth sub-link portion 1423 are rotatably connected to the base 101, and there is a gap between the fourth sub-link portion 1422 and the fifth sub-link portion 1423. The sixth sub-link portion 1424 is slidably connected to the second movable seat 141. The third helical surface 153 and the fourth helical surface 154 are arranged back to back and are respectively in contact and cooperation with the fourth sub-link portion 1422 and the fifth sub-link portion 1423.

[0064] It can be understood that in the embodiment of the present application, when the first link arm 122 rotates relative to the base 101, the synchronizing member 105 can drive the second link arm 142 to rotate synchronously and in opposite directions relative to the base 101. When the second link arm 142 rotates relative to the base 101, the synchronizing member 105 can drive the first link arm 122 to rotate synchronously and in opposite directions relative to the base 101. Among them, the orientation of the first helical surface 151 is opposite to that of the second helical surface 152. The orientation of the third helical surface 153 is opposite to that of the fourth helical surface 154.

[0065] The first rotating shaft assembly 102 and the second rotating shaft assembly 104 can be synchronously rotated relative to the base 101 through the synchronizing member 105. The synchronizing member 105 includes a first helical surface 151, a second helical surface 152, a third helical surface 153, and a fourth helical surface 154. The first helical surface 151 and the second helical surface 152 are arranged back to back and are respectively in contact and cooperation with the first link arm 122. The third helical surface 153 and the fourth helical surface 154 are arranged back to back and are respectively in contact and cooperation with the second link arm 142, which can reduce the structural design difficulty of the synchronizing member 105, reduce the size of the synchronizing member 105, make the structure of the rotating shaft mechanism 10 more compact, and thus is beneficial to the thinning design of the foldable electronic device 1000.

[0066] Further, the first rotating shaft assembly 102 further includes a first rotating shaft 124, and the first link arm 122 is rotatably connected to the base 101 through the first rotating shaft 124. Specifically, the first sub-link portion 1222 and the second sub-link portion 1223 can be sleeved on the first rotating shaft 124, and the first rotating shaft 124 and the base 101 can be relatively fixed. The second rotating shaft assembly 104 further includes a second rotating shaft 144, and the second link arm 142 is rotatably connected to the base 101 through the second rotating shaft 144. Specifically, the fourth sub-link portion 1422 and the fifth sub-link portion 1423 can be sleeved on the second rotating shaft 144, and the second rotating shaft 144 and the base 101 can be relatively fixed.

[0067] The pressing member 131 includes a connected first pressing portion 1311 and a second pressing portion 1312. The first pressing portion 1311 is sleeved on the first rotating shaft 124 and is in cam cooperation with the first link arm 122. The second pressing portion 1312 is sleeved on the second rotating shaft 144 and is in cam cooperation with the second link arm 142. Specifically, the first pressing portion 1311 has a first cam surface 1310, and the first cam surface 1310 contacts the second cam surface 1221 of the first link arm 122 so that the first pressing portion 1311 is in cam cooperation with the first link arm 122. The second pressing portion 1312 has a third cam surface, the second link arm 142 has a fourth cam surface, and the third cam surface contacts the fourth cam surface so that the second pressing portion 1312 is in cam cooperation with the second link arm 142.

[0068] Since the extrusion member 131 includes a connected first extrusion portion 1311 and a second extrusion portion 1312, the first extrusion portion 1311 is sleeved on the first rotating shaft 124 and is in cam cooperation with the first connecting rod arm 122, and the second extrusion portion 1312 is sleeved on the second rotating shaft 144 and is in cam cooperation with the second connecting rod arm 142. Therefore, during the synchronous rotation of the first connecting rod arm 122 and the second connecting rod arm 142 relative to the base 101, the extrusion member 131 can simultaneously slide relative to the base 101 under the drive of the first connecting rod arm 122 and the second connecting rod arm 142, thereby improving the reliability of the extrusion member 131 to drive the connecting member 132 to rotate relative to the base 101. In addition, when the extrusion member 131 slides relative to the base 101, the first rotating shaft 124 and the second rotating shaft 144 can play a guiding role, thereby further improving the reliability of the extrusion member 131 to drive the connecting member 132 to rotate relative to the base 101.

[0069] The torsion assembly 103 further includes a third elastic member 135 and a fourth elastic member 136. The third elastic member 135 can be a spring, a bellows, etc. The fourth elastic member 136 can be a spring, a bellows, etc. In the following embodiments, the third elastic member 135 and the fourth elastic member 136 are taken as springs for example. The third elastic member 135 is sleeved on the first rotating shaft 124 and abuts between the side of the first extrusion portion 1311 facing away from the first connecting rod arm 122 and the base 101. The fourth elastic member 136 is sleeved on the second rotating shaft 144 and abuts between the side of the second extrusion portion 1312 facing away from the second connecting rod arm 142 and the base 101. It can be understood that one end of the third elastic member 135 abuts against the first extrusion portion 1311, and the other end of the third elastic member 135 abuts against the side of the base 101 facing the first extrusion portion 1311. One end of the fourth elastic member 136 abuts against the second extrusion portion 1312, and the other end of the fourth elastic member 136 abuts against the side of the base 101 facing the second extrusion portion 1312. In a possible implementation manner, the other end of the third elastic member 135 can abut against the side of the limiting portion 112 of the base 101 facing away from the first rotating arm 123, and the other end of the fourth elastic member 136 can abut against the side of the limiting portion 112 of the base 101 facing away from the second rotating arm 143.

[0070] During the rotation of the first link arm 122 and the second link arm 142 relative to the base 101, the pressing member 131 presses the third elastic member 135 and the fourth elastic member 136, causing the third elastic member 135 and the fourth elastic member 136 to be compressed. In a possible implementation, when the rotating shaft mechanism 10 is in the flattened state or the folded state, the third elastic member 135 can be in a compressed state between one side of the first link arm 122 and the base 101, and the fourth elastic member 136 can be in a compressed state between one side of the second link arm 142 and the base 101. In this way, a certain pre-pressure can be provided to make the mating surfaces in the rotating shaft mechanism 10 fit tightly. Of course, in other possible implementations, when the rotating shaft mechanism 10 is in the flattened state or the folded state, the third elastic member 135 can be in its original length state between one side of the first link arm 122 and the base 101, and the fourth elastic member 136 can be in its original length state between one side of the second link arm 142 and the base 101.

[0071] During the process of the first link arm 122 and the second link arm 142 rotating from the flattened state to the folded state relative to the base 101, the compression amount of the third elastic member 135 first gradually increases and then gradually decreases, and the compression amount of the fourth elastic member 136 can first gradually increase and then gradually decrease. In this way, when the rotating shaft mechanism 10 is in the hovering state, it can have a greater torque, improving the hovering effect of the rotating shaft mechanism 10.

[0072] The features mentioned in the above specification, claims and drawings, as long as they are meaningful within the scope of this application, can be combined with each other arbitrarily. The advantages and features described for the rotating shaft mechanism are applicable to the electronic device in a corresponding manner.

[0073] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present application. Those of ordinary skill in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present application, and these improvements and refinements are also regarded as the protection scope of the present application.

Claims

1. A rotating shaft mechanism, characterized in that: include: Pedestal; A first rotating shaft assembly includes a first movable seat, a first connecting rod arm and a first rotating arm, wherein the first movable seat is spaced apart from the base, the first connecting rod arm is disposed between the base and the first movable seat, the first connecting rod arm is rotatably connected to the base and slidably connected to the first movable seat, the first rotating arm is disposed between the base and the first movable seat, the first rotating arm is rotatably connected to the base and rotatably connected to the first movable seat; and The torque assembly includes an extrusion member, a connection member and a first elastic member, wherein the extrusion member is carried on the base and cooperates with the first link arm cam, the connection member is carried on the base and is rotatably connected to the base, one end of the connection member abuts against a side of the extrusion member away from the first link arm, the first elastic member is between one side of the connection member and the base, the extrusion member drives the connection member to rotate relative to the base during the rotation of the first link arm relative to the base, and the first elastic member is squeezed by the connection member and compressed during the rotation of the connection member relative to the base.

2. The rotating shaft mechanism according to claim 1, characterized in that: The torsion assembly further includes a second elastic member, which is located between the other side of the connecting member and the base. The second elastic member is squeezed by the connecting member and compressed during the rotation of the connecting member relative to the base.

3. The rotating shaft mechanism according to claim 1 or 2, characterized in that: The base includes a connected bearing portion and a limiting portion, the bearing portion is used to bear the extrusion member and the connecting member, an accommodating space is formed between the bearing portion, the limiting portion and the extrusion member, the connecting member is located in the accommodating space, the connecting member includes a first abutting portion, a rotating connecting portion and a second abutting portion connected in sequence, the first abutting portion abuts against a side of the extrusion member away from the first connecting rod arm, the rotating connecting portion is rotatably connected to the base, and the second abutting portion abuts against a side of the limiting portion toward the extrusion member.

4. The rotating shaft mechanism according to claim 3, characterized in that: The connecting member is inclined relative to the extrusion member and is away from the first connecting rod arm. The rotating connecting portion has an axial hole, the bearing portion includes a connecting shaft, and the connecting member and the base are rotatably connected through the matching of the axial hole and the connecting shaft.

5. The rotating shaft mechanism according to claim 3, characterized in that: The limiting portion has an arc groove on one side away from the extrusion piece, the first rotating arm includes an arc block, and the first rotating arm is rotatably connected to the base through the cooperation of the arc groove and the arc block.

6. The rotating shaft mechanism according to claim 2, characterized in that: During the process of the first link arm rotating from the flattened state to the folded state relative to the base, the compression amount of the first elastic member first gradually increases and then gradually decreases, and the compression amount of the second elastic member first gradually increases and then gradually decreases.

7. The rotating shaft mechanism according to claim 1 or 2, characterized in that: The pivot mechanism also includes a second pivot assembly, which includes a second movable seat, a second connecting rod arm and a second rotating arm. The second movable seat is spaced apart from the base, the second connecting arm is arranged between the base and the second movable seat, the second connecting arm is rotatably connected to the base and slidably connected to the second movable seat, the second rotating arm is arranged between the base and the second movable seat, the second rotating arm is rotatably connected to the base and rotatably connected to the second movable seat, and the pivot mechanism also includes a synchronizing member arranged between the first connecting rod arm and the second connecting rod arm, the synchronizing member is used to drive the first connecting rod arm and the second connecting arm to rotate synchronously and in the opposite direction relative to the base.

8. The rotating shaft mechanism according to claim 7, characterized in that: The first rotating shaft assembly also includes a first rotating shaft, and the first connecting rod arm is rotatably connected to the base through the first rotating shaft, and the second rotating shaft assembly also includes a second rotating shaft, and the second connecting arm is rotatably connected to the base through the second rotating shaft. The extrusion member includes a first extrusion portion and a second extrusion portion that are connected, the first extrusion portion is sleeved on the first rotating shaft and cooperates with the first connecting arm cam, the second extrusion portion is sleeved on the second rotating shaft and cooperates with the second connecting arm cam, the torsion assembly also includes a third elastic member and a fourth elastic member, the third elastic member is sleeved on the first rotating shaft and abuts between a side of the first extrusion portion facing away from the first connecting arm and the base, the fourth elastic member is sleeved on the second rotating shaft and abuts between a side of the second extrusion portion facing away from the second connecting arm and the base, and during the rotation of the first connecting arm and the second connecting arm relative to the base, the extrusion member squeezes the third elastic member and the fourth elastic member to compress the third elastic member and the fourth elastic member.

9. A foldable housing, characterized in that: It includes a first shell, a second shell and the hinge mechanism described in any one of claims 1 to 8, the first shell is arranged on one side of the hinge mechanism, the second shell is arranged on the other side of the hinge mechanism, the first shell and the second shell can move towards each other to fold, or the first shell and the second shell can move away from each other to flatten.

10. A foldable electronic device, characterized in that: It comprises a flexible display screen and the foldable shell as described in claim 9, wherein the flexible display screen comprises a first non-bending display area, a bending display area, and a second non-bending display area arranged in sequence, the first non-bending display area covers the first shell, the bending display area covers the hinge mechanism, and the second non-bending display area covers the second shell.

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