Rotating mechanism and foldable electronic equipment

Abstract

The invention provides a rotating mechanism and foldable electronic equipment. The rotating mechanism comprises a base, a first damping swing arm, a first support, a first sliding block, a first rolling shaft and a first elastic piece. The first damping swing arm is rotationally connected with the base. The first support is in sliding connection with the first damping swing arm. The first rolling shaft is rotationally connected with the first support and faces the base. The first sliding block is connected between the first support and the first elastic piece. The elastic deformation direction of the first elastic piece is parallel to the second direction, the first elastic piece is elastically compressed and abuts against the first sliding block, the first sliding block abuts against the first support, the first support can move in the first direction so as to abut against the first rolling shaft, and therefore the first rolling shaft abuts against the base. Wherein the second direction is parallel to the length direction of the base, and the first direction is perpendicular to the second direction. The rotating mechanism provided by the invention can solve the technical problem that the size of the rotating mechanism in the prior art is large, so that the folding electronic equipment is not light and thin.

Description

Technical Field

[0001] The present application relates to the technical field of electronic products, and in particular to a rotating mechanism and a foldable electronic device. Background Art

[0002] With the development of technology, the appearance (ID) of electronic devices (such as mobile phones and tablets) is trending from candy-bar devices to foldable devices. Foldable devices have large screens when open, fully satisfying consumers' visual experience. When closed, they are compact and easy to carry. The rotating mechanism is the core structure that enables the unfolding and folding of foldable devices. The damping structure in the rotating mechanism can achieve a damping feel. However, the damping structure in the existing technology occupies a large space, which is not conducive to achieving the lightweight and thinness of foldable electronic devices. Summary of the Invention

[0003] The present application provides a rotating mechanism and a foldable electronic device, which can solve the technical problem in the prior art that the rotating mechanism is large in size and is not conducive to achieving a lightweight and thin foldable electronic device.

[0004] In a first aspect, the present application provides a rotation mechanism. The rotation mechanism is applied to a foldable electronic device. The foldable electronic device includes a first housing, a second housing, and a display screen. The rotation mechanism is mounted between the first housing and the second housing and fixedly connected to the first housing and the second housing. The display screen is mounted on the first housing, the second housing, and the rotation mechanism. The foldable portion of the display screen is arranged relative to the rotation mechanism. The first housing and the second housing rotate relative to each other via the rotation mechanism, causing the foldable portion of the display screen to bend and fold the display screen.

[0005] The rotation mechanism includes a base, a first fixed frame, a first damping swing arm, a second fixed frame, and a second damping swing arm. The first fixed frame and the first damping swing arm are disposed on one side of the base in the width direction. One end of the first damping swing arm is mounted on the base and rotationally connected thereto, while the other end of the first damping swing arm is slidably connected to the first fixed frame. When the first fixed frame rotates relative to the base, it drives the first damping swing arm to rotate relative to the base and slide relative to the first fixed frame along the width direction of the first fixed frame.

[0006] The second fixing bracket and the second damping swing arm are disposed on the other side of the base in the width direction. Along the width direction of the base, the second fixing bracket is disposed opposite the first fixing bracket, and the second damping swing arm is disposed opposite the first damping swing arm. One end of the second damping swing arm is rotationally connected to the base, and the other end is slidably connected to the second fixing bracket. When the second fixing bracket rotates relative to the base, it drives the second damping swing arm to rotate relative to the base and slide relative to the second fixing bracket along the width direction of the second fixing bracket.

[0007] The first fixing bracket and the second fixing bracket rotate in opposite directions, and the first damping swing arm and the second damping swing arm rotate in opposite directions.

[0008] The first fixing bracket is used to be fixedly connected to the first housing of the foldable electronic device. In this embodiment, by providing the first fixing bracket and fixing the first fixing bracket to the first housing, the connection strength between the rotating mechanism and the housing can be increased, thereby improving the stability of the rotation of the foldable electronic device.

[0009] In this embodiment, by connecting the first damping swing arm between the first fixing frame and the base, when the first fixing frame rotates relative to the base, it can drive the first damping swing arm to rotate relative to the base, thereby realizing the rotation of the rotating mechanism, so that the rotating mechanism can switch between the unfolded state and the folded state.

[0010] The rotation mechanism includes a first damping member. The first damping member includes a first bracket, a first slider, a first roller, and a first elastic member. The first damping swing arm is rotatably connected to the base. The first bracket is mounted on the first damping swing arm and can slide relative to the first damping swing arm in a first direction. The first roller is mounted on the first damping swing arm and rotatably connected to the first bracket, and the first roller faces the base. The axial direction of the first roller is parallel to the second direction. When the first damping swing arm rotates relative to the base, it can drive the first roller to slide along the surface of the base.

[0011] The first elastic member and the first slider are both installed on the first damping swing arm; the first slider is connected between the first bracket and the first elastic member, and the first slider can slide relative to the first damping swing arm along the second direction.

[0012] The elastic deformation direction of the first elastic member is parallel to the second direction. The first elastic member is elastically compressed and abuts the first slider. The first slider abuts the first bracket and enables the first bracket to move along the first direction to abut the first roller, thereby causing the first roller to abut the base.

[0013] The second direction is parallel to the length direction of the base, and the first direction is consistent with the width direction of the first damping swing arm and is perpendicular to the second direction.

[0014] In this embodiment, the elastic force of the first elastic member in the second direction can drive the first bracket to slide in the first direction via the first slider, thereby causing the first roller to abut against the base and applying a damping force to the first roller. When the angle between the direction of the damping force applied to the first roller and the sliding direction of the first roller relative to the base is greater than 90 degrees and less than or equal to 180 degrees, the damping force can prevent rotation of the first roller, thereby preventing rotation of the first damping swing arm relative to the base, thereby providing a damping force for the rotation of the first damping swing arm.

[0015] In this embodiment, the first elastic member is installed on the first damping swing arm along the second direction, that is, it is installed on the first damping swing arm along the length direction of the base, which can reduce the size occupied by the first elastic member in the first direction, that is, the size occupied by the first damping member in the first direction can be reduced, thereby reducing the size occupied by the rotating mechanism in the second direction, which is conducive to narrowing the rotating mechanism and can make more design space for other electronic components in the electronic device.

[0016] In one possible embodiment, the first slider includes a first sliding surface, and the first bracket includes a first abutting surface. The first sliding surface and the first abutting surface are parallel, and both intersect with the first direction and the second direction. Along the direction from the first slider to the first elastic member, the first sliding surface and the first abutting surface are both inclined toward the base, and the first sliding surface abuts the first abutting surface.

[0017] In this embodiment, a first sliding surface is set on the first slider, a first supporting surface is set on the first bracket, and the first sliding surface and the first supporting surface support each other, so that the elastic force of the first elastic member along the second direction can be converted into a supporting force of the first bracket along the first direction, so as to drive the first bracket to move along the first direction, thereby providing damping force for the rotation of the first damping swing arm.

[0018] It can be understood that when the first elastic member is elastically compressed and has an elastic force along the second direction, it will squeeze the first slider, so that the first slider applies a force perpendicular to the inclined surface to the first bracket, and the force has a component along the first direction. That is, the first bracket is subjected to the force along the first direction, so that the first roller can be pressed against the base, thereby providing a damping force for the rotation of the first roller, that is, providing a damping force for the rotation of the first fixed frame.

[0019] In a possible implementation manner, an angle between the first sliding surface and the second direction is greater than or equal to 30° and less than 90°.

[0020] When the angle between the first sliding surface and the second direction is greater than or equal to 30° and less than 90°, as the angle increases, the supporting force applied to the first bracket decreases, that is, the damping force provided by the first damping member to the first damping swing arm decreases, and the damping force applied to the rotating mechanism during rotation decreases; as the angle decreases, the supporting force applied to the first bracket increases, that is, the damping force provided by the first damping member to the first damping swing arm increases, and the damping force applied to the rotating mechanism during rotation increases.

[0021] The rotation mechanism provided in this embodiment can change the magnitude of the resisting force applied to the first bracket by changing the angle between the first sliding surface and the first resisting surface and the second direction, so as to change the magnitude of the damping force applied to the rotation mechanism during rotation, thereby reducing the design difficulty. At the same time, it also increases the adjustable range of the elastic force of the first elastic member, thereby increasing the optional range of the first elastic member and reducing the accuracy requirements for the elastic force of the first elastic member.

[0022] In a possible implementation, the first bracket further includes a second abutting surface, the second abutting surface is opposite to the first abutting surface and is spaced apart from the first abutting surface, and the first sliding block and the first elastic member are disposed between the first abutting surface and the second abutting surface.

[0023] The rotation mechanism further includes a second slider, the second slider including a second sliding surface, and the second slider is connected to an end of the first elastic member facing away from the first slider. The second sliding surface is parallel to the second abutting surface, and along a direction from the second slider to the first elastic member, the second sliding surface is inclined toward the base, and the second sliding surface and the second abutting surface abut each other.

[0024] In this embodiment, a second slider is provided, and a second sliding surface is provided on the second slider, a second supporting surface is provided on the first bracket, and the second sliding surface and the second supporting surface are supported against each other, so that the elastic force of the first elastic member along the second direction can be simultaneously converted into the supporting force of the first bracket along the first direction through the second slider, thereby increasing the supporting force applied to the first bracket, and then increasing the damping force applied to the rotating mechanism, thereby improving the damping feel.

[0025] In one possible embodiment, the rotation mechanism further includes a first connecting rod. One end of the first connecting rod is rotationally connected to the first slider, and the other end is rotationally connected to the first bracket. The first connecting rod extends in a direction that intersects both the first direction and the second direction, and is inclined toward the base along the direction from the first elastic member to the first slider.

[0026] When the first bracket moves along the first direction toward the base, it drives the end of the first connecting rod connected to the first slider to rotate toward the direction away from the first slider, so as to drive the first slider to slide toward the direction away from the first elastic member and release the first elastic member.

[0027] When the first bracket moves along the first direction away from the base, it drives the end of the first connecting rod connected to the first slider to rotate toward the first slider, thereby driving the first slider to slide toward the first elastic member and squeeze the first elastic member.

[0028] In this embodiment, the elastic force of the first elastic member along the second direction is converted into a resisting force of the first bracket along the first direction by connecting a first connecting rod between the first slider and the first bracket. This eliminates the need to provide inclined surfaces on the first slider and the first bracket, simplifying the structures of the first bracket and the first slider, thereby reducing costs. Furthermore, in this embodiment, the resisting force applied to the first bracket can be adjusted by adjusting the inclination angle of the first connecting rod, simplifying the manufacturing process and reducing costs. Furthermore, the rotation mechanism provided in this embodiment can also prevent wear on the first sliding surface and the first resisting surface when the first slider and the first bracket slide relative to each other, thereby preventing the damping force of the rotation mechanism from becoming unstable. This can thereby improve the stability of the damping force provided by the rotation mechanism.

[0029] It should be noted that when the first elastic member is released, the elastic compression amount decreases, and the first elastic member can be in a compressed state or in a natural state; when the first elastic member is squeezed, the elastic compression amount increases, and the first elastic member is in a compressed state.

[0030] In one possible embodiment, the rotation mechanism further includes a second slider and a second connecting rod. The second slider is connected to an end of the first elastic member facing away from the first slider. One end of the second connecting rod is rotationally connected to the second slider, and the other end is rotationally connected to the first bracket. The second connecting rod extends in a direction that intersects both the first and second directions, and is inclined toward the base along the direction from the first elastic member to the first slider.

[0031] In this embodiment, by providing a second slider and a second connecting rod, the elastic force of the first elastic member along the second direction can also be simultaneously converted into a supporting force of the first bracket along the first direction through the second slider and the second connecting rod, thereby increasing the supporting force applied to the first bracket, and further increasing the damping force applied to the rotating mechanism, thereby improving the damping feel.

[0032] In one possible embodiment, a first protrusion is provided on a side surface of the base, and a surface of the first protrusion includes a first abutting surface and a second abutting surface. The first abutting surface and the second abutting surface are connected in sequence along a direction from the bottom surface to the top surface of the base, and both are inclined away from the base, with the inclination angle of the first abutting surface being greater than the inclination angle of the second abutting surface.

[0033] In a possible implementation manner, the rotation mechanism includes an expanded state and a first intermediate state. When the rotation mechanism is in the expanded state, the first roller abuts against the first abutting surface.

[0034] When the rotating mechanism switches from the deployed state to the first intermediate state, the first roller slides along the first abutting surface toward the second abutting surface, and the first bracket moves away from the base, thereby driving the first slider to compress the first elastic member. When the rotating mechanism is in the first intermediate state, the first roller abuts against the connection between the first abutting surface and the second abutting surface.

[0035] Wherein, the deployment angle of the rotating mechanism when it is in the first intermediate state is smaller than the deployment angle of the rotating mechanism when it is in the deployed state.

[0036] When the rotating mechanism switches from the expanded state to the first intermediate state, as the expansion angle gradually decreases, the elastic compression of the first elastic member increases, the elastic force gradually increases, the supporting force on the first bracket gradually increases, the supporting force of the first bracket on the first roller gradually increases, the damping force on the first roller gradually increases, that is, the damping force on the first damping swing arm gradually increases, that is, the damping force on the rotating mechanism gradually increases, and the user's damping feel gradually increases.

[0037] In one possible embodiment, the surface of the first protrusion further includes a third abutting surface, the third abutting surface connected to an end of the second abutting surface away from the first abutting surface. The third abutting surface is inclined toward the base along a direction from the bottom surface of the base to the top surface of the base.

[0038] In one possible embodiment, the rotation mechanism further includes a second intermediate state. When the rotation mechanism switches from the first intermediate state to the second intermediate state, the first roller slides along the second abutting surface toward the third abutting surface, and the first bracket moves toward the base, driving the first slider to release the first elastic member. When the rotation mechanism is in the second intermediate state, the first roller abuts against the junction of the second abutting surface and the third abutting surface.

[0039] Wherein, the deployment angle of the rotating mechanism when it is in the second intermediate state is smaller than the deployment angle of the rotating mechanism when it is in the first intermediate state.

[0040] As the rotation mechanism switches from the first intermediate state to the second intermediate state, the damping force experienced by the rotation mechanism gradually decreases from its maximum value until it reaches zero. In this embodiment, by providing a second abutting surface on the base, with the second abutting surface having a smaller inclination angle than the first abutting surface, the damping force experienced by the first damping swing arm and the rotation mechanism gradually decreases as the rotation mechanism rotates further from the first intermediate state to the folded state, thereby preventing the damping force experienced by the rotation mechanism from being excessive and making it difficult to rotate. In other words, the rotation mechanism provided by this embodiment ensures a damping feel while also preventing the damping force from being so excessive that it would hinder the rotation of the rotation mechanism.

[0041] Moreover, in the present embodiment, during the process of the rotating mechanism rotating from the first intermediate state to the second intermediate state, the angle between the friction force and the elastic force acting on the first slider is greater than 90 degrees and less than 180 degrees. At this time, the elastic force has a component force in the opposite direction of the friction force, and this component force can reduce the resultant force of the first slider along the direction of the friction force, thereby reducing the wear between the first sliding surface and the first abutting surface, that is, reducing the wear between the first slider and the first bracket, thereby avoiding the change of the friction coefficient between the first sliding surface and the first abutting surface caused by wear, so as to avoid the instability of the damping force provided by the rotating mechanism.

[0042] In one possible embodiment, the rotation mechanism further includes a third intermediate state. When the rotation mechanism switches from the second intermediate state to the third intermediate state, the first roller slides along the third abutting surface, and the first bracket moves toward the base, thereby driving the first slider to release the first elastic member. When the rotation mechanism is in the third intermediate state, the first roller abuts against the third abutting surface.

[0043] Wherein, the deployment angle of the rotating mechanism when it is in the third intermediate state is smaller than the deployment angle of the rotating mechanism when it is in the second intermediate state.

[0044] In this embodiment, a third supporting surface is provided on the base, and the inclination direction of the third supporting surface is opposite to the inclination direction of the second supporting surface, so that when the rotating mechanism rotates further from the second intermediate state to the folded state, the direction of the damping force acting on the first damping swing arm is changed to the same as the rotation direction of the first damping swing arm, thereby providing thrust for the rotation of the first damping swing arm, and further pushing the rotating mechanism to rotate further toward the folded state, thereby achieving a labor-saving effect.

[0045] Moreover, in the present embodiment, during the process of the rotating mechanism switching from the second intermediate state to the third intermediate state, the thrust first increases and then decreases. While ensuring that the thrust received by the rotating mechanism is sufficient to rotate it to the folded state, it can also avoid excessive thrust when the rotating mechanism is about to rotate to the folded state, thereby affecting the user's experience.

[0046] In a possible implementation manner, the rotating mechanism further includes a folding state, and when the rotating mechanism is in the folding state, the first roller is spaced apart from the base.

[0047] During the process of switching the rotating mechanism from the third intermediate state to the folded state, the thrust received by the rotating mechanism is 0, which can avoid excessive thrust when the rotating mechanism is about to rotate to the folded state, affecting the user's experience.

[0048] In a possible implementation manner, the first elastic member is flat, and a thickness of the first elastic member is smaller than a width and a length of the first elastic member.

[0049] In this embodiment, a flat spring is used as the first elastic member, which can reduce the size of the first damping structure in the thickness direction, thereby reducing the thickness of the rotating mechanism, which is conducive to achieving thinning of the foldable electronic device.

[0050] In one possible embodiment, the rotation mechanism further includes a second damping member. The second damping member includes a second bracket, a third slider, a second roller, and a second elastic member. The second damping swing arm is rotationally connected to the base and is disposed opposite the first damping swing arm along the width direction of the base.

[0051] The second bracket is mounted on the second damping swing arm and is slidable along the width of the second damping swing arm. The second roller is mounted on the second damping swing arm and is rotatably connected to the second bracket, with the second roller facing the base. The axial direction of the second roller is parallel to the second direction, and when the second damping swing arm rotates relative to the base, the second roller can be driven to slide along the surface of the base.

[0052] The second elastic member and the third slider are both mounted on the second damping swing arm. The third slider is connected between the second bracket and the second elastic member, and can slide relative to the second damping swing arm along the second direction.

[0053] The elastic deformation direction of the second elastic member is parallel to the second direction. The second elastic member is elastically compressed and abuts the third slider. The third slider abuts the second bracket and enables the second bracket to slide along the width direction of the second damping swing arm to abut the second roller, thereby causing the second roller to abut the base.

[0054] In this embodiment, a second damping swing arm, a second bracket, a third slider, a second roller and a second elastic member are arranged on the side of the base opposite to the first damping swing arm, so that the elastic force of the second elastic member along the second direction can drive the second bracket to slide through the third slider, so that the second roller is pressed against the base and the second roller is subjected to a damping force, thereby providing a damping force for the rotation of the second damping swing arm, and further increasing the damping force received by the rotating mechanism.

[0055] Moreover, in this embodiment, the second elastic member is installed on the second damping swing arm along the second direction, that is, it is installed on the second damping swing arm along the length direction of the base, which can reduce the size occupied by the second elastic member in the first direction, that is, it can reduce the size occupied by the second damping member in the width direction of the second damping swing arm, thereby further achieving the narrowing of the rotating mechanism.

[0056] In one possible embodiment, the base is provided with a first rotation groove and a second rotation groove, wherein a projection of the first rotation groove along the length of the base at least partially overlaps with the second rotation groove. The first damping swing arm is mounted in the first rotation groove and is rotatable along the first rotation groove. The second damping swing arm is mounted in the second rotation groove and is rotatable along the second rotation groove.

[0057] In this embodiment, by making the projection of the first rotation groove along the length direction of the base at least partially overlap with the second rotation groove, the size of the base in the width direction can be reduced, thereby reducing the size of the rotation mechanism in the width direction, thereby reducing the thickness of the foldable electronic device in the folded state.

[0058] The present application also provides a foldable electronic device comprising a first housing, a second housing, a display screen, and the aforementioned rotation mechanism. The rotation mechanism is connected between the first and second housings. The display screen is mounted between the first and second housings, and the rotation mechanism. When the rotation mechanism rotates, the first and second housings rotate relative to each other, thereby causing the display screen to bend or unfold.

[0059] In summary, in the rotation mechanism provided by the present application, the elastic force of the first elastic member in the second direction can drive the first bracket to slide in the first direction via the first slider, thereby causing the first roller to abut against the base and applying a damping force to the first roller. When the angle between the direction of the damping force applied to the first roller and the sliding direction of the first roller relative to the base is greater than 90 degrees and less than or equal to 180 degrees, the damping force can prevent the rotation of the first roller, thereby preventing the first damping swing arm from rotating relative to the base, that is, providing a damping force for the rotation of the first damping swing arm.

[0060] In the present application, the first elastic member is installed on the first damping swing arm along the second direction, that is, it is installed on the first damping swing arm along the length direction of the base, which can reduce the size occupied by the first elastic member in the first direction, that is, the size occupied by the first damping member in the first direction can be reduced, thereby reducing the size occupied by the rotating mechanism in the second direction, which is conducive to narrowing the rotating mechanism and can make more design space for other electronic components in the electronic device. BRIEF DESCRIPTION OF THE DRAWINGS

[0061] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the background technology, the drawings required for use in the embodiments of the present application or the background technology will be described below.

[0062] Figure 1 is a schematic structural diagram of a foldable electronic device provided by an embodiment of the present application in a first state;

[0063] Figure 2 is a schematic structural diagram of a foldable electronic device provided by an embodiment of the present application in a second state;

[0064] Figure 3 is a schematic structural diagram of a foldable electronic device in a third state provided by an embodiment of the present application;

[0065] Figure 4 yes Figure 3 A schematic diagram of the exploded structure of the foldable electronic device shown;

[0066] Figure 5 yes Figure 4 A schematic structural diagram of a rotating mechanism in a foldable electronic device is shown;

[0067] Figure 6 yes Figure 5 Schematic diagram of the exploded structure of the rotating mechanism shown;

[0068] Figure 7 yes Figure 6 A schematic diagram of a portion of the structure of the base in the rotating mechanism;

[0069] Figure 8 yes Figure 7 A schematic cross-sectional structure diagram of the base shown;

[0070] Figure 9 yes Figure 6 A schematic structural diagram of the fixed frame in the rotating mechanism shown;

[0071] Figure 10 yes Figure 5 An enlarged structural diagram of the damping swing arm in the rotating mechanism shown;

[0072] Figure 11 yes Figure 10 The structural diagram of the damping swing arm shown in another angle;

[0073] Figure 12 yes Figure 5 A partial structural diagram of the rotating mechanism shown;

[0074] Figure 13 yes Figure 6 A schematic diagram of the exploded structure of the first damping member in the rotating mechanism;

[0075] Figure 14 yes Figure 13 A schematic diagram of the enlarged structure of the first slider and the second slider in the damping assembly shown at another angle;

[0076] Figure 15 yes Figure 13 A schematic diagram of a partial structure of the first elastic member in another embodiment is shown;

[0077] Figure 16 yes Figure 13 An assembly diagram of the first damping member shown;

[0078] Figure 17 yes Figure 6 A schematic diagram of the exploded structure of the second damping member in the rotating mechanism shown;

[0079] Figure 18 yes Figure 17 An assembly diagram of the second damping member shown;

[0080] Figure 19 yes Figure 5 A partial structural diagram of the rotating mechanism shown;

[0081] Figure 20 yes Figure 19 A schematic diagram of a portion of the structure of the rotating mechanism shown at another angle;

[0082] Figure 21 yes Figure 19 A schematic cross-sectional view of the rotating mechanism shown;

[0083] Figure 22 yes Figure 19 A partial force analysis model diagram of the rotating mechanism 100 is shown;

[0084] Figure 23 is the holding force F x1 Curve diagram of the change with angle α;

[0085] Figure 24 yes Figure 19 A schematic structural diagram of the rotating mechanism shown in the first intermediate state;

[0086] Figure 25yes Figure 24 A schematic cross-sectional view of the rotating mechanism shown;

[0087] Figure 26 yes Figure 19 A curve diagram showing the variation of the damping force of the rotating mechanism with the rotation angle;

[0088] Figure 27 yes Figure 19 A schematic diagram of a portion of the structure of the rotating mechanism shown in the second intermediate state;

[0089] Figure 28 yes Figure 27 A schematic cross-sectional view of the rotating mechanism shown;

[0090] Figure 29 yes Figure 19 A schematic diagram of a portion of the structure of the rotating mechanism shown is in a third intermediate state;

[0091] Figure 30 yes Figure 29 A schematic cross-sectional view of the rotating mechanism shown;

[0092] Figure 31 yes Figure 19 A schematic structural diagram of the rotating mechanism shown in FIG. 1 is in a folded state;

[0093] Figure 32 yes Figure 31 A schematic cross-sectional view of the rotating mechanism shown;

[0094] Figure 33 yes Figure 31 A schematic structural diagram of the rotating mechanism shown in the fourth intermediate state;

[0095] Figure 34 yes Figure 33 A schematic cross-sectional view of the rotating mechanism shown;

[0096] Figure 35 This is a partial structural diagram of the rotation mechanism provided in the second embodiment of the present application;

[0097] Figure 36a yes Figure 35 An enlarged structural diagram of the first elastic member in the rotating mechanism shown;

[0098] Figure 36b yes Figure 35 A schematic structural diagram of the first elastic member in the rotating mechanism shown in the second embodiment;

[0099] Figure 36c yes Figure 35 A schematic structural diagram of the first elastic member in the rotating mechanism in a third embodiment;

[0100] Figure 36d yes Figure 35 A schematic structural diagram of the first elastic member in the rotating mechanism in a fourth embodiment;

[0101] Figure 36e yes Figure 35 A schematic structural diagram of the first elastic member in the rotating mechanism shown in the fifth embodiment;

[0102] Figure 36f yes Figure 35 A schematic structural diagram of the first elastic member in the rotating mechanism in a sixth embodiment;

[0103] Figure 36g yes Figure 35 A schematic structural diagram of the first elastic member in the rotating mechanism shown in the seventh embodiment;

[0104] Figure 36h yes Figure 35 A schematic structural diagram of the first elastic member in the rotating mechanism in an eighth embodiment;

[0105] Figure 36i yes Figure 35 A schematic structural diagram of the first elastic member in the rotating mechanism in a ninth embodiment;

[0106] Figure 37 This is a partial structural diagram of the rotation mechanism provided in the third embodiment of the present application;

[0107] Figure 38 yes Figure 37 Schematic diagram of the partial structure of the rotating mechanism in the folded state. DETAILED DESCRIPTION

[0108] The embodiments of the present application are described below in conjunction with the drawings in the embodiments of the present application.

[0109] See also Figures 1 to 3 , Figure 1 1 is a schematic structural diagram of a foldable electronic device 1000 provided in an embodiment of the present application in a first state. Figure 2 is a structural diagram of the foldable electronic device 1000 provided in an embodiment of the present application in the second state, Figure 3 3 is a schematic structural diagram of the foldable electronic device 1000 provided in an embodiment of the present application in the third state.

[0110] The foldable electronic device 1000 includes, but is not limited to, a cell phone, a notebook computer, a tablet personal computer, a laptop computer, a personal digital assistant, a wearable device, or a mobile device. In the embodiment of the present application, the foldable electronic device 1000 is described as a cell phone.

[0111] Figure 1 The foldable electronic device 1000 is shown in a folded state. Figure 2 The foldable electronic device 1000 is shown in a semi-expanded state. Figure 3 The foldable electronic device 1000 is shown in an unfolded state. Figure 2 The unfolding angle θ1 of the foldable electronic device 1000 is 90 degrees. Figure 3 The unfolding angle θ2 of the foldable electronic device 1000 is shown to be 180 degrees.

[0112] It should be noted that the angles illustrated in the embodiments of this application are allowed to have slight deviations. For example, Figure 2 The unfolding angle θ1 of the foldable electronic device 1000 shown is 90 degrees, which means that θ1 can be 90 degrees, or approximately 90 degrees, such as 80 degrees, 85 degrees, 95 degrees, or 100 degrees. Figure 3 The unfolding angle θ2 of the foldable electronic device 1000 shown as 180 degrees means that θ2 can be 180 degrees or approximately 180 degrees, such as 170 degrees, 175 degrees, 185 degrees, and 190 degrees. The angles described below as examples can be understood in the same way.

[0113] The foldable electronic device 1000 shown in the embodiment of the present application is an electronic device 1000 that can be folded once. In other embodiments, the foldable electronic device 1000 can also be an electronic device 1000 that can be folded multiple times (more than twice). In this case, the foldable electronic device 1000 can include multiple parts, where two adjacent parts can be folded relatively close together until the foldable electronic device 1000 is in a folded state, and two adjacent parts can be unfolded relatively far apart until the foldable electronic device 1000 is in an unfolded state.

[0114] For ease of description, the width direction of the foldable electronic device 1000 in the unfolded state is defined as a first direction, also known as the X direction; the length direction is defined as a second direction, also known as the Y direction; and the thickness direction is defined as a third direction, also known as the Z direction. The X direction, Y direction, and Z direction are mutually perpendicular.

[0115] See also Figure 4 , Figure 4 yes Figure 3 A schematic diagram of the exploded structure of the foldable electronic device 1000 is shown.

[0116] The foldable electronic device 1000 includes a folding device 200 and a display screen 300, which is mounted on the folding device 200. The display screen 300 includes a display surface 310 and a mounting surface 320, which are arranged opposite each other. The display surface 310 is used to display text, images, videos, etc. The display screen 300 includes a first portion 330, a second portion 340, and a foldable portion 350. The foldable portion 350 is located between the first portion 330 and the second portion 340, and the foldable portion 350 can bend about an axis in the Y direction. The first portion 330, the second portion 340, and the foldable portion 350 together constitute the display screen 300. In this embodiment, the display screen 300 is a flexible display screen, such as an organic light-emitting diode (OLED) display screen, an active-matrix organic light-emitting diode (AMOLED) display screen, etc.

[0117] The folding device 200 includes a first housing 210, a second housing 220, and a rotating mechanism 100. The rotating mechanism 100 is disposed between the first housing 210 and the second housing 220 and is fixedly connected to the first housing 210 and the second housing 220 to achieve a rotational connection between the first housing 210 and the second housing 220. The display screen 300 is mounted on the folding device 200, and the mounting surface 320 is fixedly connected to the folding device 200. Specifically, the first housing 210 carries the first portion 330 of the display screen 300, and the second housing 220 carries the second portion 340. In other words, the first portion 330 is mounted on the first housing 210, and the second portion 340 is mounted on the second housing 220. The rotating mechanism 100 is disposed opposite the foldable portion 350. The first housing 210 and the second housing 220 can rotate relative to each other via the rotating mechanism 100, allowing the folding device 200 to switch between a folded state and an unfolded state.

[0118] Combine Figure 1, the first shell 210 and the second shell 220 rotate relative to each other through the rotating mechanism 100, and the first shell 210 and the second shell 220 are relatively close to each other to drive the display screen 300 to fold, so that the foldable electronic device 1000 is folded. In this embodiment, the foldable electronic device 1000 is an external folding machine. When the foldable electronic device 1000 is in the folded state, the foldable portion 350 of the display screen 300 is bent, and the first portion 330 and the second portion 340 are arranged opposite to each other. At this time, the display screen 300 is located on the outside of the foldable electronic device 1000, and the foldable portion 350 has a large bending angle, which can greatly reduce the probability of creases on the foldable portion 350 of the display screen 300. In some other embodiments, the foldable electronic device 1000 can also be an internal folding machine, that is, the display screen 300 can also be folded inward by the rotating mechanism 100. When the display screen 300 folds inward and the foldable electronic device 1000 is in a folded state, the first part 330 and the second part 340 are arranged relative to each other, and the display screen 300 is located between the first shell 210 and the second shell 220, which can greatly reduce the probability of the display screen 300 being damaged and achieve effective protection for the display screen 300.

[0119] See also Figure 2 , the first shell 210 and the second shell 220 rotate relative to each other through the rotating mechanism 100, and the first shell 210 and the second shell 220 move away from each other, driving the display screen 300 to unfold, so that the foldable electronic device 1000 is unfolded to a semi-expanded state. When the foldable electronic device 1000 is in the semi-expanded state, the first shell 210 and the second shell 220 unfold to an angle α, the first part 330 and the second part 340 unfold relative to each other, and drive the foldable part 350 to unfold. At this time, the angle between the first part 330 and the second part 340 is θ1. In this embodiment, θ1 is 90 degrees. In other embodiments, θ1 may also be approximately 90 degrees, or may be 80 degrees, 85 degrees, 95 degrees, or 0 degrees, etc.

[0120] See also Figure 3The first shell 210 and the second shell 220 rotate relative to each other via the rotating mechanism 100, and the first shell 210 and the second shell 220 move away from each other, driving the display screen 300 to further unfold until the foldable electronic device 1000 is flattened. When the folding device 200 is in the unfolded state, the angle between the first shell 210 and the second shell 220 is β. The foldable portion 350 unfolds, and the first portion 330 and the second portion 340 unfold relative to each other. At this time, the angle between the first portion 330 and the second portion 340 is θ2, and the display screen 300 has a large display area, realizing a large-screen display of the foldable electronic device 1000 and improving the user experience. In this embodiment, θ2 is 180 degrees. In other embodiments, θ2 can also be approximately 180 degrees, and can be 170 degrees, 175 degrees, 185 degrees, 190 degrees, etc.

[0121] When the foldable electronic device 1000 is in the unfolded state, the rotating mechanism 100 is also in the unfolded state. When the foldable electronic device 1000 is in the semi-expanded state, the rotating mechanism 100 is also in the semi-expanded state. When the foldable electronic device 1000 is in the folded state, the rotating mechanism 100 is also in the folded state.

[0122] It should be noted that angles θ1 and θ2 are both the angles between the first housing 210 and the second housing 220. These angles are used to distinguish the angles between the first housing 210 and the second housing 220 in different states of the foldable electronic device 1000. Angle θ1 refers to the angle between the first housing 210 and the second housing 220 when the foldable electronic device 1000 is in the semi-expanded state, while angle θ2 refers to the angle between the first housing 210 and the second housing 220 when the foldable electronic device 1000 is in the expanded state.

[0123] See also Figure 5 and Figure 6 , Figure 5 yes Figure 4 The schematic structural diagram of the rotating mechanism 100 in the foldable electronic device 1000 is shown. Figure 6 yes Figure 5 Schematic diagram of the exploded structure of the rotating mechanism 100 is shown.

[0124] The rotating mechanism 100 includes a base 10, a fixing frame 20, a damping swing arm 30 and a damping assembly 1. The fixing frame 20 is fixedly connected to the first shell 210 and the second shell 220. The damping swing arm 30 is connected between the base 10 and the fixing frame 20. The damping assembly 1 is mounted on the damping swing arm 30 and abuts against the base 10. When the first shell 210 and the second shell 220 rotate relative to each other, the fixing frame 20 is driven to rotate relative to the base 10, thereby driving the damping swing arm 30 to rotate relative to the base 10 and causing the damping assembly 1 to generate a damping force. The damping force acts on the damping swing arm 30, and acts on the fixing frame 20 through the damping swing arm 30, and then acts on the first shell 210 and the second shell 220 through the fixing frame 20, thereby providing a damping force for the rotation of the rotating mechanism 100 and the foldable electronic device 1000, thereby providing a damping feel to the user.

[0125] Combine Figure 5 and Figure 6 The damping swing arm 30 includes a first damping swing arm 31 and a second damping swing arm 32. The damping swing arm 30 is mounted in the rotation slot of the base 10 and can rotate relative to the base 10. The first damping swing arm 31 is located on the negative side of the X-axis of the base 10 and is rotationally connected to the base 10. The second damping swing arm 32 is located on the positive side of the X-axis of the base 10 and is rotationally connected to the base 10.

[0126] The fixing frame 20 includes a first fixing frame 21 and a second fixing frame 22. The first fixing frame 21 and the second fixing frame 22 are respectively located on opposite sides of the base 10 in the X-direction. The first fixing frame 21 is located in the negative X-axis direction of the base 10 and is slidably connected to the first damping swing arm 31. When the first fixing frame 21 rotates relative to the base 10, it can drive the first damping swing arm 31 to rotate relative to the base 10 and cause the first damping swing arm 31 to slide relative to the first fixing frame 21. The second fixing frame 22 is located in the positive X-axis direction of the base 10 and is slidably connected to the second damping swing arm 32. When the second fixing frame 22 rotates relative to the base 10, it can drive the second damping swing arm 32 to rotate relative to the base 10 and cause the second damping swing arm 32 to slide relative to the second fixing frame 22.

[0127] The damping assembly 1 includes a first damping member 40 and a second damping member 50. The first damping member 40 is mounted on the first damping swing arm 31 and abuts the base 10. When the first damping swing arm 31 rotates relative to the base 10, it drives the first damping member 40 to rotate relative to the base 10 and causes the first damping member 40 to generate a damping force. This damping force acts on the first damping swing arm 31, thereby providing a damping force for the rotation of the first damping swing arm 31 and the first fixed frame 21. The second damping member 50 is mounted on the second damping swing arm 32 and abuts the base 10. When the second damping swing arm 32 rotates relative to the base 10, it drives the second damping member 50 to rotate relative to the base 10 and causes the second damping member 50 to generate a damping force. This damping force acts on the second damping swing arm 32, thereby providing a damping force for the rotation of the second damping swing arm 32 and the second fixed frame 22.

[0128] It should be noted that Figure 5 and Figure 6 Only a portion of the structure of the rotation mechanism 100 is shown. The fixed frame 20, damping arm 30, and damping assembly 1 form a set of substructures. The entire rotation mechanism 100 may have one or more sets of these substructures. "Multiple sets" refers to two or three or more sets. When the rotation mechanism 100 has two sets of these substructures, the two sets are spaced apart along the Y direction on the base 10 and symmetrically arranged along the centerline of the base 10 in the Y direction. That is, the fixed frame 20, damping arm 30, and damping assembly 1 are provided at one end of the base 10, while the fixed frame 20, damping arm 30, and damping assembly 1 are also provided at the other end. To enhance the stability of the entire rotation mechanism 100, an additional set of these substructures is provided between the substructures at both ends of the base 10, located in the middle of the base 10. To further enhance the stability of the entire rotation mechanism 100, two additional sets of these substructures can also be provided directly at the substructures at both ends of the base 10. The number of these substructures can be adjusted according to actual conditions.

[0129] The first fixing frames 21 of the multiple substructures can be split, i.e., separate components that are not fixed to each other. Alternatively, the first fixing frames 21 of the multiple substructures can be fixedly connected to each other, or can be an integrally formed structure. The second fixing frames 22 of the multiple substructures can be split, fixedly connected to each other, or can be an integrally formed structure.

[0130] In other embodiments, the rotation mechanism 100 may further include a synchronization assembly, a main swing arm, and a secondary swing arm. The synchronization assembly is mounted on the base 10 and connected to the fixed frame 20. The synchronization assembly is used to achieve synchronized rotation of the structures on opposite sides of the base 10 in the X-direction. The main swing arm and the secondary swing arm are mounted on the base 10 and connected to the fixed frame 20. When the fixed frame 20 rotates relative to the base 10, it also drives the main swing arm and the secondary swing arm to rotate relative to the base 10, thereby improving the stability of the rotation mechanism 100 during rotation.

[0131] See also Figure 7 and Figure 8 , Figure 7 yes Figure 6 A schematic diagram of a portion of the structure of the base 10 in the rotating mechanism 100, Figure 8 yes Figure 7 A schematic cross-sectional structural diagram of the base 10 is shown.

[0132] The base 10 is a long strip-shaped shell. The length direction of the base 10 is parallel to the second direction, that is, parallel to the Y direction. The base 10 includes a first center beam 11 and a second center beam 12. The second center beam 12 is installed on the top surface of the first center beam 11 and is fixedly connected to the top surface of the first center beam 11. In this embodiment, the second center beam 12 and the first center beam 11 are fixedly connected by bolts. In other embodiments, the second center beam 12 and the first center beam 11 can also be fixedly connected by welding, clamping, welding or other methods. The "top surface" mentioned here is Figure 7 Take the viewing angle as an example, the surface facing the negative direction of the Z axis.

[0133] The base 10 includes a first side surface 101, a second side surface 102, a top surface 103 and a bottom surface 104. The top surface 103 and the bottom surface 104 are arranged opposite to each other and are respectively located on opposite sides of the Z direction. The first side surface 101 and the second side surface 102 are arranged opposite to each other and are respectively located on opposite sides of the X direction, and are both connected between the top surface 103 and the bottom surface 104. In this embodiment, the first side surface 101 and the second side surface 102 are both inclined surfaces. Along the direction from the bottom surface 104 to the top surface 103, that is, along the negative direction of the Z axis, the first side surface 101 is inclined toward the positive direction of the X axis, and the second side surface 102 is inclined toward the negative direction of the X axis. That is, the first side surface 101 and the second side surface 102 are inclined in opposite directions respectively.

[0134] The base 10 is provided with a first rotation groove 13 and a second rotation groove 14. The first rotation groove 13 and the second rotation groove 14 are recessed in the top surface 103. The first rotation groove 13 and the second rotation groove 14 are both arc-shaped and are bent toward the bottom surface 104 of the base 10. One end of the extension direction of the first rotation groove 13 is located on the first side surface 101 and passes through the first side surface 101 in the X direction. The first rotation groove 13 is used to install the first damping swing arm 31, and the first damping swing arm 31 can rotate along the first rotation groove 13. What is meant here that "the first damping swing arm 31 can rotate along the first rotation groove 13" is that the first damping swing arm 31 slides along the arc extension direction of the first rotation groove 13.

[0135] One end of the second rotation slot 14 is located on the second side surface 102 and extends through the second side surface 102 in the X direction. The second rotation slot 14 is used to mount the second damping swing arm 32, and the second damping swing arm 32 can rotate along the second rotation slot 14. In other words, the second damping swing arm 32 can slide along the arc-shaped extension direction of the second rotation slot 14.

[0136] In this embodiment, the first rotation groove 13 and the second rotation groove 14 are arranged side by side along the Y direction. Furthermore, the orthographic projection of the first rotation groove 13 along the Y direction at least partially overlaps with the second rotation groove 14. That is, the first rotation groove 13 and the second rotation groove 14 are offset along the X direction, and the orthographic projection of the first rotation groove 13 along the X direction is completely offset from the second rotation groove 14, with no overlap. This reduces the size of the base 10 in the X direction, thereby reducing the size of the rotation mechanism 100 in the X direction and reducing the thickness of the foldable electronic device 1000 in the folded state.

[0137] In this embodiment, the first rotation slot 13 includes a first sub-rotation slot 131 and a second sub-rotation slot 132. The first sub-rotation slot 131 and the second sub-rotation slot 132 are both arcuate slots and are spaced apart and arranged side by side along the Y direction. Both the first sub-rotation slot 131 and the second sub-rotation slot 132 are used to mount the first damping swing arm 31 to enhance the stability of the first damping swing arm 31 during rotation.

[0138] The second rotation slot 14 includes a third sub-rotation slot 141 and a fourth sub-rotation slot 142. The third sub-rotation slot 141 and the fourth sub-rotation slot 142 are both arcuate slots, spaced apart and arranged side by side along the Y direction. The third sub-rotation slot 141 is located between the first sub-rotation slot 131 and the second sub-rotation slot 132, and is spaced apart from the first sub-rotation slot 131 and the second sub-rotation slot 132. The fourth sub-rotation slot 142 is located on the side of the second sub-rotation slot 132 away from the first sub-rotation slot 131. Both the third sub-rotation slot 141 and the fourth sub-rotation slot 142 are used to mount the second damping swing arm 32, thereby improving the stability of the second damping swing arm 32's rotation.

[0139] In this embodiment, the first sub-rotation groove 131, the third sub-rotation groove 141, the second sub-rotation groove 132 and the fourth sub-rotation groove 142 are arranged in sequence along the Y direction to fully utilize the space on the base 10, so that the spacing between the first damping swing arm 31 and the second damping swing arm 32 along the Y direction is smaller, that is, the first damping swing arm 31 and the second damping swing arm 32 are arranged more compactly, and the force balance on the opposite sides of the rotation mechanism 100 in the X direction can be ensured.

[0140] The first side surface 101 is provided with a first protrusion 15. Along the Y direction, the first protrusion 15 is located between the first sub-rotation groove 131 and the second sub-rotation groove 132. The first protrusion 15 is provided at one end of the first side surface 101 close to the top surface 103, and the surface of the first protrusion 15 is connected between the first side surface 101 and the top surface 103. In this embodiment, the surface of the first protrusion 15 is a curved surface. The surface of the first protrusion 15 includes a first abutting surface 151, a second abutting surface 152 and a third abutting surface 153. Along the direction from the first side surface 101 to the top surface 103, the first abutting surface 151, the second abutting surface 152 and the third abutting surface 153 are connected in sequence.

[0141] The angle between the first abutting surface 151 and the positive direction of the X-axis, or angle η, is greater than 0 degrees and less than 90 degrees. The angle between the second abutting surface 152 and the positive direction of the X-axis is greater than 0 degrees and less than 90 degrees. Furthermore, the angle between the second abutting surface 152 and the positive direction of the X-axis is greater than the angle between the first abutting surface 151 and the positive direction of the X-axis. The transition between the first abutting surface 151 and the second abutting surface 152 is smooth. The angle between the first abutting surface 151 and the positive direction of the X-axis gradually increases toward the second abutting surface 152. The third abutting surface 153 is generally arc-shaped. From the second abutting surface 152 to the top surface 103, the angle between the third abutting surface 153 and the positive direction of the X-axis gradually increases from less than 90 degrees to greater than 90 degrees. Furthermore, the second abutting surface 152 and the third abutting surface 153 are smoothly connected. "Smooth connection" here means that the inclination angle changes slowly and without sudden changes. The same explanation will be given below.

[0142] The second side surface 102 is provided with a second protrusion 16. Along the Y direction, the second protrusion 16 is located between the third sub-rotation groove 141 and the fourth sub-rotation groove 142. The second protrusion 16 is provided at one end of the second side surface 102 close to the top surface 103, and the surface of the second protrusion 16 is connected between the second side surface 102 and the top surface 103. In this embodiment, the surface of the second protrusion 16 is a curved surface. The surface of the second protrusion 16 includes a fourth abutting surface 161, a fifth abutting surface 162 and a sixth abutting surface 163. Along the direction from the second side surface 102 to the top surface 103, the fourth abutting surface 161, the fifth abutting surface 162 and the sixth abutting surface 163 are connected in sequence.

[0143] The angle between the fourth abutting surface 161 and the positive direction of the X-axis, and the angle between the fifth abutting surface 162 and the positive direction of the X-axis, are both greater than 0 degrees and less than 90 degrees. Furthermore, the angle between the fifth abutting surface 162 and the positive direction of the X-axis is greater than the angle between the fourth abutting surface 161 and the positive direction of the X-axis. The fourth abutting surface 161 and the fifth abutting surface 162 are smoothly connected. The angle between the fourth abutting surface 161 and the positive direction of the X-axis gradually increases toward the fifth abutting surface 162. The sixth abutting surface 163 is roughly arc-shaped. From the fifth abutting surface 162 to the top surface 103, the angle between the sixth abutting surface 163 and the positive direction of the X-axis gradually increases from less than 90 degrees to greater than 90 degrees. Furthermore, the fifth abutting surface 162 and the sixth abutting surface 163 are smoothly connected.

[0144] It should be noted that Figure 7 Only part of the structure of the base 10 in the positive direction of the Y-axis is shown. The structure of the base 10 in the negative direction of the Y-axis is the same as or similar to the structure in the positive direction of the Y-axis, and the structure of the base 10 in the negative direction of the Y-axis can be adaptively adjusted according to the number and structure of the main swing arm, the damping swing arm 30 and the synchronous swing arm.

[0145] See also Figure 9 , Figure 9 yes Figure 6 A schematic structural diagram of the fixing frame 20 in the rotating mechanism 100 is shown.

[0146] The first fixing frame 21 is provided with a first receiving groove 211. In the present embodiment, the first receiving groove 211 is a U-shaped groove. The first receiving groove 211 passes through the top surface of the first fixing frame 21 and two opposite side surfaces of the first fixing frame 21 along the X-direction. In other embodiments, the first receiving groove 211 may also only pass through the two opposite side surfaces of the first fixing frame 21 along the X-direction, and not pass through the top surface or bottom surface of the first fixing frame 21. The "top surface" mentioned here refers to the surface of the first fixing frame 21 in the negative direction of the Z-axis, and the "bottom surface" refers to the surface of the first fixing frame 21 in the positive direction of the Z-axis.

[0147] A first slide groove 212 is provided on the sidewall of the first receiving groove 211. In this embodiment, there are two first slide grooves 212. The two first slide grooves 212 are respectively provided on two opposite sidewalls of the first receiving groove 211 in the longitudinal direction (Y direction). The longitudinal direction of the first slide groove 212 coincides with the X direction, that is, coincides with the width direction of the first fixing frame 21.

[0148] The structure of the second fixing frame 22 is roughly the same as that of the second fixing frame 22. The second fixing frame 22 is provided with a second receiving groove 221. In this embodiment, the second receiving groove 221 is a U-shaped groove. The second receiving groove 221 passes through the top surface of the second fixing frame 22 and the two opposite side surfaces of the second fixing frame 22 along the X direction. The side walls of the second receiving groove 221 are provided with second slide grooves 222. In this embodiment, there are two second slide grooves 222. The two second slide grooves 222 are respectively provided on the two opposite side walls of the second receiving groove 221. The extension direction of the second slide groove 222 is consistent with the X direction, that is, consistent with the width direction of the second fixing frame 22.

[0149] See also Figure 10 and Figure 11 , Figure 10 yes Figure 5 The enlarged structural diagram of the damping swing arm 30 in the rotating mechanism 100 is shown. Figure 11 yes Figure 10 The structure diagram of the damping swing arm 30 shown is another angle.

[0150] The damping swing arm 30 includes a first damping swing arm 31 and a second damping swing arm 32. The first damping swing arm 31 includes a first body 311, a first sliding body 312, a first rotating body 313, and a first cover plate 314. In this embodiment, the first body 311 is a generally rectangular plate-shaped structure. The length of the first body 311 is aligned with the Y direction, and the width is aligned with the X direction. In other embodiments, the first body 311 may also be a square or other special-shaped structure. The first body 311 includes a first top surface 3111, a first bottom surface 3112, a first side surface 3113, a second side surface 3114, a third side surface 3115, and a fourth side surface 3116. The first top surface 3111 and the first bottom surface 3112 are arranged opposite each other along the Z direction. The first side surface 3113, the third side surface 3115, the second side surface 3114, and the fourth side surface 3116 are connected in sequence and are all connected between the first top surface 3111 and the first bottom surface 3112. The first side surface 3113 and the second side surface 3114 are oppositely disposed along the X direction, and the third side surface 3115 and the fourth side surface 3116 are oppositely disposed along the Y direction.

[0151] The first body 311 is provided with a first mounting groove 3117. The opening of the first mounting groove 3117 is located on the first top surface 3111 and extends through the first side surface 3113. The first mounting groove 3117 is used to mount the first damping member 40. The first cover plate 314 covers the opening of the first mounting groove 3117 and is fixedly connected to the first body 311. When the first damping member 40 is installed in the first mounting groove 3117, the first cover plate 314 is used to secure the first damping member 40 to prevent the first damping member 40 from falling out of the first mounting groove 3117, thereby improving the connection stability between the first damping member 40 and the first damping swing arm 31.

[0152] The first body 311 also defines a first sliding hole 315 and a second sliding hole 316. Both the first sliding hole 315 and the second sliding hole 316 are located on the bottom wall of the first mounting slot 3117 and extend through the first bottom surface 3112. In this embodiment, the first sliding hole 315 and the second sliding hole 316 are waist-shaped holes, and their lengths coincide with the length of the first damping swing arm 31, i.e., the Y direction. The first sliding hole 315 and the second sliding hole 316 are spaced apart along the length (Y direction) of the first damping swing arm 31.

[0153] The first sliding body 312 is fixed to the surface of the first body 311 in the Y direction, that is, the third side surface 3115 and / or the fourth side surface 3116. The extension direction of the first sliding body 312 is consistent with the X direction. The first sliding body 312 is used for sliding connection with the first fixed frame 21. In this embodiment, there are two first sliding bodies 312. One of the first sliding bodies 312 is fixed to the third side surface 3115, and the other first sliding body 312 is fixed to the fourth side surface 3116. In other embodiments, there can also be one first sliding body 312. In this case, the first sliding body 312 can be fixed to the third side surface 3115 or the fourth side surface 3116.

[0154] The first rotating body 313 is fixed to the first side surface 3113. The first rotating body 313 is used to connect to the first rotating groove 13, and the first rotating body 313 can rotate along the first rotating groove 13. In this embodiment, the first rotating body 313 includes a first sub-rotating body 3131 and a second sub-rotating body 3132. The first sub-rotating body 3131 and the second sub-rotating body 3132 are both fixedly connected to the first side surface 3113. The first sub-rotating body 3131 and the second sub-rotating body 3132 are spaced apart along the Y direction and are respectively located on opposite sides of the opening of the first mounting groove 3117 on the first side surface 3113.

[0155] The bottom surfaces of the first sub-rotator 3131 and the second sub-rotator 3132 are both curved surfaces. The first sub-rotator 3131 fits within the second sub-rotating groove 132, and the second sub-rotator 3132 fits within the second sub-rotating groove 132. In other words, the curvature of the bottom surface of the first sub-rotator 3131 is the same as, or approximately the same as, the curvature of the bottom wall of the first sub-rotating groove 131, and the curvature of the bottom surface of the second sub-rotator 3132 is the same as, or approximately the same as, the curvature of the bottom wall of the second sub-rotating groove 132. When the first damping swing arm 31 rotates relative to the base 10, the first sub-rotator 3131 can rotate along the first sub-rotating groove 131, and the second sub-rotator 3132 can rotate along the second sub-rotating groove 132.

[0156] The second damping swing arm 32 and the first damping swing arm 31 are rotationally symmetrical structures. The second damping swing arm 32 includes a second body 321, a second sliding body 322, a second rotating body 323 and a second cover plate 324. The second body 321 includes a second top surface 3211, a second bottom surface 3212, a fifth side surface 3213, a sixth side surface 3214, a seventh side surface 3215 and an eighth side surface 3216. The second top surface 3211 and the second bottom surface 3212 are arranged opposite to each other along the Z direction. The fifth side surface 3213, the seventh side surface 3215, the sixth side surface 3214 and the eighth side surface 3216 are connected in sequence and are all connected between the second top surface 3211 and the second bottom surface 3212. Among them, the fifth side surface 3213 and the sixth side surface 3214 are arranged opposite to each other along the X direction, and the seventh side surface 3215 and the eighth side surface 3216 are arranged opposite to each other along the Y direction.

[0157] The second body 321 is provided with a second mounting groove 3217. The opening of the second mounting groove 3217 is located on the second top surface 3211 and extends through the fifth side surface 3213. The second mounting groove 3217 is used to mount the second damping member 50. The second cover plate 324 covers the opening of the second mounting groove 3217 and is fixedly connected to the second body 321. When the second damping member 50 is installed in the second mounting groove 3217, the second cover plate 324 is used to secure the second damping member 50 to prevent it from falling out of the second mounting groove 3217, thereby improving the connection stability between the second damping member 50 and the second damping swing arm 32.

[0158] The second body 321 also has a third sliding hole 325 and a fourth sliding hole 326. Both the third sliding hole 325 and the fourth sliding hole 326 are located on the bottom wall of the second mounting groove 3217 and extend through the second bottom surface 3212. In this embodiment, both the third sliding hole 325 and the fourth sliding hole 326 are waist-shaped holes, with their length aligned with the Y direction. The third sliding hole 325 and the fourth sliding hole 326 are spaced apart along the Y direction.

[0159] There are two first sliding bodies 312 , one of which is fixed to the seventh side surface 3215 , and the other is fixed to the eighth side surface 3216 .

[0160] The second rotating body 323 includes a third sub-rotator 3231 and a fourth sub-rotator 3232. Both the third sub-rotator 3231 and the fourth sub-rotator 3232 are fixedly connected to the fifth side surface 3213. The third sub-rotator 3231 and the fourth sub-rotator 3232 are spaced apart along the Y direction and located on opposite sides of the opening of the second mounting slot 3217 in the fifth side surface 3213. The bottom surfaces of the third sub-rotator 3231 and the fourth sub-rotator 3232 are both curved surfaces. The third sub-rotator 3231 fits within the fourth sub-rotating slot 142, and the fourth sub-rotator 3232 fits within the fourth sub-rotating slot 142. In other words, the curvature of the bottom surface of the third sub-rotator 3231 is the same as, or substantially the same as, the curvature of the bottom wall of the third sub-rotating slot 141, and the curvature of the bottom surface of the fourth sub-rotating slot 142 is the same as, or substantially the same as, the curvature of the bottom wall of the fourth sub-rotating slot 142. When the second damping swing arm 32 rotates relative to the base 10 , the third sub-rotator 3231 can rotate along the third sub-rotation slot 141 , and the fourth sub-rotator 3232 can rotate along the fourth sub-rotation slot 142 .

[0161] Please also refer to Figure 12 , Figure 12 yes Figure 5 A partial structural diagram of the rotating mechanism 100 is shown.

[0162] The first damping swing arm 31 and the first fixing frame 21 are both mounted on the negative X-axis side of the base 10. The first fixing frame 21 is fixedly connected to the first housing 210, and the first damping swing arm 31 is connected between the first fixing frame 21 and the base 10. The first sub-rotating body 3131 is mounted in the first sub-rotating groove 131, and the second sub-rotating body 3132 is mounted in the second sub-rotating groove 132. The first body 311 is mounted in the first receiving groove 211, and the first sliding body 312 is mounted in the first slide groove 212, with each first slide groove 212 mounting one first sliding body 312.

[0163] The second damping swing arm 32 and the second fixing frame 22 are both mounted on the positive X-axis side of the base 10. The second fixing frame 22 is fixedly connected to the second housing 220, and the second damping swing arm 32 is connected between the second fixing frame 22 and the base 10. The third sub-rotating body 3231 is mounted in the third sub-rotating groove 141, and the fourth sub-rotating body 3232 is mounted in the fourth sub-rotating groove 142. The second body 321 is mounted in the second receiving groove 221, and the second sliding body 322 is mounted in the second slide groove 222, with each second slide groove 222 mounting one second sliding body 322.

[0164] When the first housing 210 rotates relative to the base 10, it drives the first fixing frame 21 to rotate relative to the base 10, thereby driving the first body 311 and the first sliding body 312 to rotate relative to the base 10, causing the first body 311 to slide within the first receiving groove 211, and the first sliding body 312 to slide within the first sliding groove 212. When the first body 311 rotates relative to the base 10, it drives the first sub-rotating body 3131 and the second sub-rotating body 3132 to rotate relative to the base 10, causing the first sub-rotating body 3131 to rotate along the first sub-rotating groove 131, and the second sub-rotating body 3132 to rotate along the second sub-rotating groove 132.

[0165] When the second housing 220 rotates relative to the base 10, it drives the second fixing frame 22 to rotate relative to the base 10, thereby driving the second body 321 and the second sliding body 322 to rotate relative to the base 10, causing the second body 321 to slide within the second receiving groove 221 and the second sliding body 322 to slide within the second sliding groove 222. When the second body 321 rotates relative to the base 10, it drives the third sub-rotating body 3231 and the fourth sub-rotating body 3232 to rotate relative to the base 10, causing the third sub-rotating body 3231 to rotate along the third sub-rotating groove 141 and the fourth sub-rotating body 3232 to rotate along the fourth sub-rotating groove 142.

[0166] The rotation direction of the first shell 210 is opposite to that of the second shell 220 , the rotation direction of the first fixing frame 21 is opposite to that of the second fixing frame 22 , and the rotation direction of the first damping swing arm 31 is opposite to that of the second damping swing arm 32 .

[0167] When the rotating mechanism 100 switches from the deployed state to the folded state, the first fixing frame 21 and the first damping swing arm 31 rotate clockwise, while the second fixing frame 22 and the second damping swing arm 32 rotate counterclockwise. When the rotating mechanism 100 switches from the folded state to the deployed state, the first fixing frame 21 and the first damping swing arm 31 rotate counterclockwise, while the second fixing frame 22 and the second damping swing arm 32 rotate clockwise.

[0168] In this embodiment, by providing a first fixing frame 21 and a second fixing frame 22, and fixing the first fixing frame 21 to the first shell 210 and fixing the second fixing frame 22 to the second shell 220, the connection strength between the rotating mechanism 100 and the shell can be increased, thereby improving the rotation stability of the foldable electronic device 1000.

[0169] Moreover, in this embodiment, by connecting the first damping swing arm 31 between the first fixing frame 21 and the base 10, when the first fixing frame 21 rotates relative to the base 10, it can drive the first damping swing arm 31 to rotate relative to the base 10, thereby enabling the structural member located in the negative direction of the X-axis of the base 10 to rotate relative to the base 10; by connecting the second damping swing arm 32 between the second fixing frame 22 and the base 10, and connected to the base 10, when the second fixing frame 22 rotates relative to the base 10, it can drive the second damping swing arm 32 to rotate relative to the base 10, thereby enabling the structural member located in the positive direction of the X-axis of the base 10 to rotate relative to the base 10, thereby enabling the rotating mechanism 100 and the foldable electronic device 1000 to switch between the unfolded state and the folded state.

[0170] like Figure 6 and Figure 12 As shown, the rotation mechanism 100 further includes a first stop block 2 and a second stop block 3. The first stop block 2 is fixed to the top surface 103 of the base 10 and is disposed opposite the first sub-rotation slot 131. When the first damping swing arm 31 is extended relative to the base 10, the first stop block 2 abuts against the first sub-rotation body 3131, thereby preventing the first damping swing arm 31 from over-extending and potentially damaging the display screen 300.

[0171] The second stop block 3 is fixed to the top surface 103 of the base 10 and is disposed opposite the fourth sub-rotation slot 142. When the second damping swing arm 32 is extended relative to the base 10, the second stop block 3 abuts against the fourth sub-rotation body 3232, thereby preventing the second damping swing arm 32 from over-extending and further preventing damage to the display screen 300.

[0172] See also Figure 13 , Figure 13 yes Figure 6 Schematic diagram of the exploded structure of the first damping member 40 in the rotating mechanism 100.

[0173] The first damping member 40 includes a first bracket 41, a first roller 42, a first slider 43, a second slider 44, and a first elastic member 46. The first bracket 41 is generally U-shaped. The first bracket 41 includes a first bracket body 411, a first abutting block 412, and a second abutting block 413. Both the first abutting block 412 and the second abutting block 413 are wedge-shaped. The first abutting block 412 includes a first abutting surface 4121. The first abutting surface 4121 intersects with the X-direction and is not perpendicular. That is, the angle between the first abutting surface 4121 and the X-direction is greater than 0 degrees and less than 90 degrees. The second abutting block 413 includes a second abutting surface 4131. The second abutting surface 4131 intersects with the X-direction and is not perpendicular. That is, the angle between the second abutting surface 4131 and the X-direction is greater than 0 degrees and less than 90 degrees.

[0174] The first supporting block 412 and the second supporting block 413 are both fixedly connected to the first bracket body 411, and are spaced apart along the length direction of the first bracket body 411. A first installation space 414 is formed between the first supporting block 412 and the second supporting block 413. The first supporting surface 4121 and the second supporting surface 4131 are both facing the first installation space 414. That is, the first supporting surface 4121 and the second supporting surface 4131 are arranged opposite to each other. The first supporting surface 4121 and the second supporting surface 4131 are both inclined surfaces, and the first supporting surface 4121 and the second supporting surface 4131 intersect with the X direction and the Y direction. Along the negative direction of the Y axis, that is, from the first supporting surface 4121 to the second supporting surface 4131, that is, from the first slider 43 to the first elastic member 46 (such as Figure 16 and Figure 19 As shown, the first abutting surface 4121 is inclined toward the negative direction of the X-axis, that is, toward the base 10. Along the positive direction of the Y-axis, that is, from the second slider 44 to the first elastic member 46, the second abutting surface 4131 is inclined toward the negative direction of the X-axis, that is, toward the base 10. It can be understood that along the positive direction of the X-axis, the first abutting surface 4121 and the second abutting surface 4131 are inclined away from each other, and the size of the first installation space 414 along the Y-direction gradually increases.

[0175] The first bracket 41 further includes a first shaft seat 415. The first shaft seat 415 is connected to a side of the first bracket body 411 facing away from the first abutting block 412 and the second abutting block 413. The first shaft seat 415 is configured to be rotatably connected to the first roller 42.

[0176] The first roller 42 is cylindrical. The first roller 42 is rotatably connected to the first shaft seat 415, and the axial direction of the first roller 42 is parallel to the Y direction. Exemplarily, the first damping member 40 also includes a first shaft pin 45. The first shaft pin 45 is passed through the first roller 42 and the first shaft seat 415. The first shaft pin 45 is fixedly connected to the first shaft seat 415 and is rotatably connected to the first roller 42. The first roller 42 can rotate around the axial direction of the first shaft pin 45. Alternatively, the first shaft pin 45 can also be rotatably connected to the first shaft seat 415 and fixedly connected to the first roller 42, and the first roller 42 and the first shaft pin 45 can simultaneously rotate around the axial direction of the first shaft pin 45.

[0177] Please combine Figure 13 and Figure 14 , Figure 14 yes Figure 13 The first slider 43 and the second slider 44 in the damping assembly 1 are shown as an enlarged structural diagram at another angle.

[0178] The first slider 43 includes a first slider body 431, a first sliding post 432, and a first extension shaft 433. The first slider body 431 is wedge-shaped. It includes a first sliding surface 4311. The first sliding surface 4311 is an inclined surface that intersects the X-direction and is not perpendicular. That is, the angle between the first sliding surface 4311 and the X-direction is greater than 0 degrees and less than 90 degrees. The first sliding surface 4311 is configured to mate with the first abutting surface 4121. The inclination angle of the first sliding surface 4311 is consistent with the inclination angle of the first abutting surface 4121; that is, the first sliding surface 4311 and the first abutting surface 4121 are arranged parallel to each other. Alternatively, the inclination angle of the first sliding surface 4311 may deviate slightly from the inclination angle of the first abutting surface 4121 (within a tolerance range). It is understood that the first sliding surface 4311 is a side surface of the first slider body 4311.

[0179] The first extension shaft 433 is fixed to the surface of the first slider body 431 facing away from the first sliding surface 4311 , and the axial direction of the first extension shaft 433 is parallel to the Y direction. In this embodiment, there are two first extension shafts 433 , which are spaced apart. The first extension shafts 433 are used to mount the first elastic member 46 .

[0180] The first slide post 432 is fixed to the bottom of the first slider body 431. In this embodiment, the cross-section of the first slide post 432 is runway-shaped. In other embodiments, the cross-section of the first slide post 432 may also be circular, oval, square, or other special shapes. The cross-section here refers to a plane perpendicular to the axial direction of the first slide post 432. The first slide post 432 is mounted in the first slide hole 315 and can slide in the Y direction within the first slide hole 315.

[0181] The second slider 44 and the first slider 43 have mirror-symmetrical structures. The second slider 44 includes a second slider body 441, a second slide post 442, and a second extension shaft 443. The second slider body 441 includes a second sliding surface 4411. The second sliding surface 4411 is an inclined surface, and the inclination angle of the second sliding surface 4411 is consistent with the inclination angle of the second abutting surface 4131. That is, the second sliding surface 4411 is arranged parallel to the second abutting surface 4131. The second extension shaft 443 is fixed to the surface of the second slider body 441 facing away from the second sliding surface 4411. The second slide post 442 is fixed to the bottom of the second slider body 441. The second slide post 442 is used to be installed in the third sliding hole 325, and the second slide post 442 can slide along the third sliding hole 325.

[0182] Please continue reading Figure 13The first elastic member 46 is a coil spring. Furthermore, the cross-section of the coil spring is circular in a direction perpendicular to the extension direction of the coil spring. That is, the first elastic member 46 is a circular coil spring. In this embodiment, the first elastic member 46 includes two coil springs. The two coil springs are arranged side by side along their radial direction. In other embodiments, the first elastic member 46 may also include one, three, or more than four coil springs.

[0183] See also Figure 15 , Figure 15 yes Figure 13 FIG. 4 is a schematic diagram of a partial structure of the first elastic member 46 in another embodiment.

[0184] In this embodiment, the first elastic member 46 is a square coil spring. The cross-section of the coil spring is square in a direction perpendicular to its extension direction. While achieving the same elastic force, a coil spring with a square cross-section occupies less space in the radial direction, thereby saving space.

[0185] Please also refer to Figure 16 , Figure 16 yes Figure 13 An assembled view of the first damping member 40 is shown.

[0186] The first axle pin 45 is passed through the first roller 42, and the axis of the first axle pin 45 coincides or roughly coincides with the axis of the first roller 42. The first roller 42 can rotate around the axial direction of the first axle pin 45. The first axle pin 45 is installed on the first axle seat 415 and is fixedly connected to the first axle seat 415. The first slider 43 and the second slider 44 are both installed in the first installation space 414. The first slider 43 is located on the side close to the first abutting block 412. The first sliding surface 4311 faces the first abutting surface 4121 and contacts the first abutting surface 4121. The axial direction of the first extension shaft 433 is parallel or roughly parallel to the Y direction, and the first extension shaft 433 extends toward the second abutting block 413. The first slide column 432 faces the positive direction of the Z axis.

[0187] The second slider 44 is located on a side close to the second abutting block 413 and is arranged side by side with the first slider 43 along the Y direction. The second sliding surface 4411 faces the second abutting surface 4131 and contacts the second abutting surface 4131. The second extension shaft 443 extends toward the first abutting block 412, and the axis of the second extension shaft 443 is roughly in the same straight line as the axis of the first extension shaft 433. The first elastic member 46 is sleeved on the outer circumference of the first extension shaft 433 and the second extension shaft 443. Along the elastic deformation direction of the first elastic member 46, one end of the first elastic member 46 abuts the first slider 43, and the other end abuts the second slider 44. The first elastic member 46 is in an elastically compressed state, and the elastic deformation direction of the first elastic member 46 is parallel to the axial direction of the first extension shaft 433 and the second extension shaft 443.

[0188] See also Figure 17 , Figure 17 yes Figure 6 FIG. 1 is a schematic diagram of the exploded structure of the second damping member 50 in the rotating mechanism 100 .

[0189] The second damping member 50 and the first damping member 40 are mirror-symmetrical structures. The second damping member 50 includes a second bracket 51 , a second roller 52 , a third slider 53 , a fourth slider 54 and a second elastic member 56 .

[0190] The second bracket 51 includes a second bracket body 511, a third abutting block 512, and a fourth abutting block 513. The third abutting block 512 includes a third abutting surface 5121, and the fourth abutting block 513 includes a fourth abutting surface 5131. The third abutting block 512 and the fourth abutting block 513 are both fixedly connected to the second bracket body 511 and spaced apart along the length of the second bracket body 511. A second installation space 514 is formed between the third abutting block 512 and the fourth abutting block 513. Both the third abutting surface 5121 and the fourth abutting surface 5131 face the second installation space 514. As the third abutting surface 5121 tilts toward the positive Y-axis, and the fourth abutting surface 5131 tilts toward the negative Y-axis, away from the second bracket body 511, i.e., in the positive X-axis direction, the third abutting surface 5121 tilts toward the positive Y-axis, while the fourth abutting surface 5131 tilts toward the negative Y-axis direction. In other words, the size of the second installation space 514 along the Y-direction gradually increases as the second bracket body 511 is moved away from the second bracket body 511.

[0191] A second shaft seat 515 is provided on the side of the second bracket 51 facing away from the third abutting block 512 and the fourth abutting block 513. The second roller 52 is rotatably connected to the second shaft seat 515. Exemplarily, the second damping member 50 further includes a second shaft pin 55. The second shaft pin 55 extends through the second roller 52 and the second shaft seat 515. The second shaft pin 55 is fixedly connected to the second shaft seat 515 and is rotatably connected to the second roller 52. The second roller 52 is rotatable about the axial direction of the second shaft pin 55.

[0192] The third slider 53 includes a third slider body 531, a third slide post 532, and a third extension shaft 533. The third slider body 531 includes a third sliding surface 5311. The third sliding surface 5311 is configured to cooperate with the third abutting surface 5121. The inclination angle of the third sliding surface 5311 is consistent with the inclination angle of the third abutting surface 5121. The third extension shaft 533 is fixed to the surface of the third slider body 531 facing away from the third sliding surface 5311, and the axial direction of the third extension shaft 533 is parallel to the Y direction. The third slide post 532 is fixed to the bottom of the third slider body 531. The third slide post 532 is configured to be mounted in the second sliding hole 316 and can slide in the second sliding hole 316 along the Y direction.

[0193] The fourth slider 54 includes a fourth slider body 541, a fourth sliding post 542, and a fourth extension shaft 543. The fourth slider body 541 includes a fourth sliding surface 5411. The fourth sliding surface 5411 is an inclined surface, and the inclination angle of the fourth sliding surface 5411 is the same as or substantially the same as the inclination angle of the fourth abutting surface 5131. The fourth extension shaft 543 is fixed to the surface of the fourth slider body 541 facing away from the fourth sliding surface 5411. The fourth sliding post 542 is fixed to the bottom of the fourth slider body 541. The fourth sliding post 542 is mounted in the fourth sliding hole 326 and can slide along the fourth sliding hole 326.

[0194] Please combine Figure 18 , Figure 18 yes Figure 17 An assembly diagram of the second damping member 50 is shown.

[0195] The second axle pin 55 is inserted into the second roller 52, and the second roller 52 can rotate around the axial direction of the second axle pin 55. The second axle pin 55 is installed on the second axle seat 515 and is fixedly connected to the second axle seat 515. The third slider 53 and the fourth slider 54 are both installed in the second installation space 514. The third slider 53 is located on the side close to the third abutting block 512. The third sliding surface 5311 faces the third abutting surface 5121 and contacts the third abutting surface 5121. The third extension shaft 533 extends toward the fourth abutting block 513. The third slide column 532 faces the positive direction of the Z axis.

[0196] The fourth slider 54 is located on a side close to the fourth abutting block 513 and is arranged side by side with the third slider 53 along the Y direction. The fourth sliding surface 5411 faces the fourth abutting surface 5131 and contacts the fourth abutting surface 5131. The fourth extension shaft 543 extends toward the third abutting block 512. The second elastic member 56 is sleeved on the outer circumference of the third extension shaft 533 and the fourth extension shaft 543. Along the elastic deformation direction of the second elastic member 56, one end of the second elastic member 56 abuts the third slider 53, and the other end abuts the fourth slider 54. The second elastic member 56 is in an elastically compressed state, and the elastic deformation direction of the second elastic member 56 is parallel to the axial direction of the third extension shaft 533 and the fourth extension shaft 543.

[0197] Please also refer to Figure 19 and Figure 20 , Figure 19 yes Figure 5 The partial structural diagram of the rotating mechanism 100 is shown in FIG. Figure 20 yes Figure 19 The diagram shows a partial structure of the rotating mechanism 100 at another angle.

[0198] The first damping member 40 is mounted in the first mounting slot 3117 of the first damping swing arm 31. The first abutting block 412 and the second abutting block 413 are located on opposite sides of the first mounting slot 3117 in the Y direction and abut against the sidewalls of the first mounting slot 3117. The dimension of the first abutting block 412 along the X direction is smaller than the dimension of the first mounting slot 3117 along the X direction, and the dimension of the second abutting block 413 along the X direction is smaller than the dimension of the first mounting slot 3117 along the X direction. In addition, the first abutting block 412 and the second abutting block 413 can both move in the X direction within the first mounting slot 3117. The axial direction of the first roller 42 is parallel to the longitudinal direction (Y direction) of the base 10, and the outer peripheral surface of the first roller 42 faces the base 10 and is arranged opposite the first protrusion 15 on the base 10.

[0199] The first slider 43, the second slider 44, and the first elastic member 46 are all located in the first mounting groove 3117 and between the first abutting block 412 and the second abutting block 413. The elastic deformation direction of the first elastic member 46 is parallel to the Y direction. The elastic deformation can be elastic compression or elastic extension. The first slide post 432 of the first abutting block 412 is installed in the first sliding hole 315 and can slide along the first sliding hole 315 in the Y direction. The second slide post 442 of the second abutting block 413 is installed in the second sliding hole 316 and can slide along the second sliding hole 316 in the Y direction.

[0200] The second damping member 50 is mounted within the second mounting slot 3217 of the second damping swing arm 32. The third abutting block 512 and the fourth abutting block 513 are located on opposite sides of the second mounting slot 3217 in the Y direction and abut against the sidewalls of the second mounting slot 3217. The dimensions of the third abutting block 512 and the fourth abutting block 513 along the X direction are both smaller than the dimensions of the second mounting slot 3217 along the X direction. Furthermore, both the third abutting block 512 and the fourth abutting block 513 are movable within the second mounting slot 3217 along the X direction. The second roller 52 faces the base 10 and is positioned opposite the second protrusion 16 on the base 10.

[0201] The third slider 53, the fourth slider 54, and the second elastic member 56 are all located in the second mounting groove 3217 and between the third abutting block 512 and the fourth abutting block 513. The elastic deformation direction of the second elastic member 56 is parallel to the Y direction. The third slide post 532 of the third abutting block 512 is mounted in the third sliding hole 325 and can slide along the third sliding hole 325 in the Y direction. The fourth slide post 542 of the fourth abutting block 513 is mounted in the fourth sliding hole 326 and can slide along the fourth sliding hole 326 in the Y direction.

[0202] When the first fixing frame 21 rotates relative to the base 10, it drives the first damping swing arm 31 to rotate relative to the base 10. The first rotating body 313 rotates within the first rotating groove 13, the first body 311 slides along the first receiving groove 211, and the first sliding body 312 slides along the first sliding groove 212. The first elastic member 46 compresses the first slider 43 and the second slider 44, causing them to slide in the Y direction and compressing the first bracket 41 in the X direction, thereby causing the first roller 42 to abut against the base 10. This damping force acts on the first roller 42, thereby providing a first damping force for the rotation of the first damping swing arm 31 and the first fixing frame 21.

[0203] It should be noted that when the direction of the first damping force is opposite to the rotation direction of the first fixing frame 21 relative to the base 10, the first damping force can prevent the rotation of the first fixing frame 21, thereby providing a damping feel to the user. When the direction of the first damping force is the same as the rotation direction of the first fixing frame 21 relative to the base 10, the first damping force can promote the rotation of the first fixing frame 21, that is, it can drive the first fixing frame 21 to rotate.

[0204] When the second fixed frame 22 rotates relative to the base 10, it drives the second damping swing arm 32 to rotate relative to the base 10. The second rotating body 323 rotates within the second rotating groove 14, the second body 321 slides along the second receiving groove 221, and the second sliding body 322 slides along the second sliding groove 222. The second elastic member 56 compresses the third and fourth sliders 53 and 54, causing them to slide in the Y direction and compresses the second bracket 51 in the X direction, thereby causing the second roller 52 to abut against the base 10. This damping force acts on the second roller 52, thereby providing a second damping force for the rotation of the second damping swing arm 32 and the second fixed frame 22. When the direction of the second damping force is opposite to the direction of rotation of the second fixed frame 22 relative to the base 10, the second damping force can prevent the rotation of the second fixed frame 22. When the direction of the second damping force is the same as the direction of rotation of the second fixed frame 22 relative to the base 10, the second damping force can promote the rotation of the second fixed frame 22.

[0205] The first damping swing arm 31 and the second damping swing arm 32 rotate in opposite directions.

[0206] For ease of description, in this embodiment of the present application, the direction parallel to the width of the first fixing frame 21 and toward the base 10 is defined as the A1 direction, the direction parallel to the width of the first fixing frame 21 and away from the base 10 is defined as the A2 direction, the direction parallel to the width of the second fixing frame 22 and toward the base 10 is defined as the B1 direction, and the direction parallel to the width of the second fixing frame 22 and away from the base 10 is defined as the B2 direction. The A1 direction is parallel to the A2 direction and faces in opposite directions. The B1 direction is parallel to the B2 direction and faces in opposite directions. When the rotating mechanism 100 is in the deployed state, the A1 direction and the B2 direction are both aligned with the positive direction of the X-axis, and the A2 direction and the B1 direction are both aligned with the negative direction of the X-axis.

[0207] Please also refer to Figure 21 , Figure 21 yes Figure 19 FIG. 1 is a schematic cross-sectional structural diagram of the rotating mechanism 100 .

[0208] When the rotating mechanism 100 is in the deployed state, the first fixing frame 21 and the second fixing frame 22 are relatively deployed, and the first damping swing arm 31 and the second damping swing arm 32 are relatively deployed. The angle between the first damping swing arm 31 and the second damping swing arm 32 is approximately 180°. The first elastic member 46 is in a pre-compressed state, and the first roller 42 contacts the first abutting surface 151 of the base 10. The second elastic member 56 is in a pre-compressed state, and the second roller 52 contacts the fourth abutting surface 161 of the base 10.

[0209] Please combine Figure 22 , Figure 22 yes Figure 19The diagram shows a partial force analysis model of the rotating mechanism 100. Figure 22 The rotating mechanism 100 is in an unfolded state and has a movement tendency to switch to a folded state.

[0210] The first abutting surface 4121 of the first bracket 41 contacts the first sliding surface 4311 of the first slider 43. The force acting on the first slider 43 includes: the elastic force F of the first elastic member 46 on the first slider 43 t , the pressure F of the first bracket 41 on the first slider 43 n1 , the friction force F of the first abutting surface 4121 on the first sliding surface 4311 f1 , and the holding force F1 of the first damping swing arm 31 on the first slider 43. t Towards the positive direction of the Y axis, F n1 Perpendicular to the first sliding surface 4311, F f1 The first sliding surface 4311 is parallel to the first sliding surface 4311 and opposite to the moving direction of the first sliding block 43 relative to the first bracket 41 .

[0211] The force analysis of the first slider 43 yields:

[0212] F t +F f1 *cosα=F n1 *sinα; (1)

[0213] F1=F f1 *sinα+F n1 *cosα; (2)

[0214] F f1 =μ*F n1 (3)

[0215] Here, α is the angle between the first sliding surface 4311 and the Y direction, and μ is the friction coefficient between the first sliding surface and the first abutting surface 4121 .

[0216] Solving equations (1), (2) and (3), we obtain:

[0217] F n1 =F t / (sinα-μ* cosα). (4)

[0218] like Figure 22 As shown, the force acting on the first supporting block 412 includes: the supporting force F exerted by the base 10 on the first supporting block 412 through the first roller 42 x1 The pressure F of the first slider 43 on the first abutting block 412 n2 , and the friction force F between the first sliding surface 4311 and the first abutting surface 4121 f2Among them, the holding force F x1 The direction is parallel to the direction of A1. Pressure F n2 The direction is perpendicular to the first abutting surface 4121, and the pressure F n2 With pressure F n1 The magnitude of the friction force is the same but the direction is opposite. f2 The direction of the friction force F is parallel to the first abutting surface 4121 and opposite to the direction of movement of the first bracket 41 relative to the first slider 43. f2 and friction force F f1 Same size, opposite direction.

[0219] The force analysis of the first supporting block 412 yields:

[0220] F x1 =F n2 * cosα+ F f2 *sinα. (5)

[0221] Solving equations (4) and (5), we obtain:

[0222] F x1 =F t *(cosα+μ* sinα) / (sinα-μ* cosα). (6)

[0223] Combine Figure 19 The force applied to the second slider 44 is similar to that applied to the first slider 43, and the force applied to the second supporting block 413 is similar to that applied to the first supporting block 412. The base 10 applies a supporting force F to the second supporting block 413 through the first roller 42. x2 , holding force F x2 and the holding force F x1 The same size and direction. x1 and the holding force F x2 The resultant force is the force exerted by the first elastic member 46 on the first bracket 41 through the first slider 43 and the second slider 44. That is, the resisting force F on the first bracket 41 is x =F x1 +F x2 .

[0224] Please combine Figure 21 FIG. 1 is an enlarged view P1 in which the rotating mechanism 100 is in an unfolded state and has a tendency to rotate to a folded state.

[0225] When the rotating mechanism 100 is in the unfolded state, the contact position of the first roller 42 with the base 10 is the first position A. The first position A is located on the first abutting surface 151. The forces acting on the first roller 42 include: the abutting force F of the first bracket 41 on the first roller 42x ', the squeezing force F of the base 10 on the first roller 42 n3 , and the friction force F f3 Among them, the extrusion force F n3 The direction of the friction force F is consistent with the normal direction of the first position A. f3 The direction is consistent with the tangential direction of the first position and is opposite to the movement direction of the first roller 42 relative to the base 10.

[0226] The damping force F applied to the first roller 42 when it rotates relative to the base 10 is a The holding force F x ', extrusion force F n3 and friction force F f3 That is:

[0227] Among them, the damping force F a The direction of F f3 The direction is consistent, F a =μ1F n3 +F x 'cosθ. (7)

[0228] At this time, the damping force F a It can hinder the movement of the first roller 42 relative to the base 10, that is, the damping force F a The first damping member 40 can provide a first damping force for the rotation of the first fixing frame 21. a is positively correlated. That is, the damping force F a The larger the first damping force is, the greater the damping force F a The smaller it is, the smaller the first damping force is.

[0229] It should be noted that Figure 21 The enlarged image P1 and Figure 22 The force analysis only shows the structure of the base 10 located in the negative X-axis direction. The structures located in the positive X-axis direction and the negative X-axis direction of the base 10 experience roughly the same forces. When the rotation mechanism 100 switches from the deployed state to the first intermediate state, the second damping member 50 can provide a second damping force for the rotation of the second damping swing arm 32 and the second fixing bracket 22. The direction of this second damping force is opposite to the direction of rotation of the second fixing bracket 22, and the second damping force can prevent the rotation of the second fixing bracket 22.

[0230] In this embodiment, by configuring the first sliding surface 4311 of the first slider 43, the second sliding surface 4411 of the second slider 44, and the first abutting surface 4121 and the second abutting surface 4131 of the first bracket 41 as inclined surfaces, and by aligning the first sliding surface 4311 with the first abutting surface 4121 and the second sliding surface 4411 with the second abutting surface 4131, the elastic force of the first elastic member 46 along the Y direction can be converted into an abutting force of the first bracket 41 along the X direction, thereby providing a damping force for the rotation of the first fixing bracket 21 and the first damping swing arm 31. It will be understood that when the first elastic member 46 is elastically compressed and exerts an elastic force along the Y direction, it compresses the first slider 43, causing the first slider 43 to exert a force perpendicular to the inclined surface on the first bracket 41. This force has a component along the X direction. That is, the first bracket 41 is subjected to a force along the X direction, thereby providing a damping force for the rotation of the first fixing bracket 21.

[0231] In this embodiment, the elastic force of the first elastic member 46 along the Y direction can be converted into a resisting force of the first bracket 41 along the X direction, thereby providing a damping force for the rotating mechanism 100. In other words, in this embodiment, by installing the first elastic member 46 on the first damping swing arm 31 along the Y direction, the damping force provided by the first damping member 40 for the rotating mechanism 100 can be reduced, which can reduce the size occupied by the first elastic member 46 in the X direction. In other words, the size occupied by the first damping member 40 in the X direction can be reduced, thereby reducing the size occupied by the rotating mechanism 100 in the X direction, thereby facilitating the narrowing of the rotating mechanism 100 and providing more design space for other electronic components within the electronic device 1000.

[0232] At the same time, in this embodiment, by providing a second damping member 50 on the second damping swing arm 32, a damping force can be provided for the rotation of the second fixed frame 22. That is, the second damping member 50 and the first damping member 40 can simultaneously provide a damping force for the rotation mechanism 100, thereby increasing the damping force applied to the rotation mechanism 100 during rotation, further enhancing the user's damping feel and improving the user experience. Furthermore, in this embodiment, by aligning the third slider 53 and the fourth slider 54 with the second bracket 51 via an inclined surface, the elastic force of the second elastic member 56 along the Y direction can be converted into a resisting force on the second bracket 51 along the X direction to provide a damping force. This reduces the size occupied by the second damping member 50 in the X direction, further reducing the size occupied by the rotation mechanism 100 in the X direction, and facilitating a narrowing of the rotation mechanism 100.

[0233] See also Figure 23 , Figure 23 is the holding force F x1 Curve diagram of the change with angle α.

[0234] It should be noted that Figure 23 In order to simplify the calculation, the elastic force F t The value is 1N, and the friction coefficient μ is 0.15. In actual use scenarios, the friction coefficient μ can be an actual value. The specific value of the friction coefficient μ is related to the materials of the first abutting surface 4121 and the first sliding surface 4311.

[0235] Depend on Figure 22 From equation (6), we can see that when 0<α<8.2°, the holding force F x The curve of the change with the angle α. Among them, the elastic force F t The force is 1N and the friction coefficient μ is 0.15. x1 is a negative value, F f2 >F x1 sinα, the first sliding surface 4311 and the first abutting surface 4121 are self-locking, and the elastic force Ft cannot push the first abutting surface 4121 to move relative to the first sliding surface 4311 , that is, the elastic force Ft cannot push the first bracket 41 to move relative to the first slider 43 .

[0236] Combine Figure 23 and equation (6), when 8.2°≤α≤53.5°, (cosα+μ*sinα) / (sinα-μ*cosα)>1, Fx1>F t The first sliding surface 4311 and the first abutting surface 4121 have an amplifying effect on the elastic force Ft of the first elastic member 46 .

[0237] When 53.5°<α<90°, 0<(cosα+μ*sinα) / (sinα-μ*cosα)<1, Fx1 <F t The elastic force F of the first sliding surface 4311 and the first abutting surface 4121 on the first elastic member 46 t Has a shrinking effect.

[0238] In this embodiment, when the friction coefficient between the first abutting surface 4121 and the first sliding surface 4311 is 0.15, the angle α is greater than or equal to 30 degrees and less than 90 degrees. Moreover, when the angle α is within the range of 30° to 90°, the larger the angle α is, the greater the F x1 The smaller the angle α, the smaller the damping force provided by the first damping member 40 to the first fixing frame 21, and the smaller the damping force received by the rotating mechanism 100 during rotation; the smaller the angle α, the smaller the F x1 The larger the value, that is, the greater the damping force provided by the first damping member 40 to the first fixing bracket 21 , the greater the damping force received by the rotating mechanism 100 during rotation.

[0239] Therefore, the rotating mechanism 100 provided in this embodiment can change the resisting force F on the first bracket 41 by changing the inclination angle of the first sliding surface 4311 and the first resisting surface 4121.x The size of the damping force F applied to the first roller 42 when it rotates relative to the base 10 can be changed. a (As shown in Equation 7), the magnitude of the damping force provided by the first damping member 40 to the first fixing frame 21 can be changed. In other words, the magnitude of the damping force experienced by the rotating mechanism 100 and the foldable electronic device 1000 during rotation can be changed. Simultaneously, by changing the deformation of the first elastic member 46 or the elastic coefficient of the first elastic member 46, the magnitude of the elastic force of the first elastic member 46 can be changed, thereby changing the magnitude of the damping force experienced by the rotating mechanism 100.

[0240] That is to say, in the actual design process, the inclination angles of the first sliding surface 4311 and the first abutting surface 4121 , as well as the deformation amount and structure of the first elastic member 46 can be designed according to the required damping force.

[0241] In this embodiment, by changing the inclined surface angles of the first sliding surface 4311 and the first abutting surface 4121, the elastic force of the first elastic member 46 can be amplified or reduced, so that the adjustable range of the elastic force of the first elastic member 46 becomes larger, thereby increasing the optional range of the first elastic member 46 and reducing the precision requirements for the elastic force of the first elastic member 46.

[0242] Similarly, in this embodiment, by changing the inclination angle of the second sliding surface 4411 and the second abutting surface 4131, the magnitude of the damping force applied to the first fixing frame 21 can also be varied. The rotation mechanism 100 provided in this embodiment can change the magnitude of the damping force applied to the second fixing frame 22 by changing the inclination angle of the third sliding surface 5311 and the third abutting surface 5121, or the inclination angle of the fourth sliding surface 5411 and the fourth abutting surface 5131, thereby changing the magnitude of the damping force applied to the rotation mechanism 100.

[0243] Please also refer to Figure 24 and Figure 25 , Figure 24 yes Figure 19 The structural diagram of the rotating mechanism 100 shown is in the first intermediate state, Figure 25 yes Figure 24 The cross-sectional structure diagram of the rotating mechanism 100 is shown. When the rotating mechanism 100 is in the first intermediate state, the angle between the first fixing frame 21 and the second fixing frame 22 is β1. β1 is greater than 90 degrees and less than 180 degrees. In this embodiment, β1 is approximately 175 degrees.

[0244] When the rotating mechanism 100 switches from the deployed state to the first intermediate state, the first fixing frame 21 rotates clockwise, driving the first damping swing arm 31 to rotate clockwise. The first body 311 and the first sliding body 312 slide relative to the first fixing frame 21 in the direction A2. The first roller 42 slides along the first abutting surface 151 toward the second abutting surface 152, thereby driving the first bracket 41 to move along the first mounting slot 3117 in the direction A2. This abuts the first slider 43 and the second slider 44, causing the first slider 43 to move along the first sliding hole 315 in the negative direction of the Y axis, and the second slider 44 to move along the third sliding hole 325 in the positive direction of the Y axis. This compresses the first elastic member 46, placing it in a compressed state. The "compressed state" refers to the first elastic member 46 being compressed and having an elastic restoring force directed toward opposite ends of the first elastic member 46. The elastic restoring force of the first elastic member 46 in the compressed state is greater than the elastic restoring force of the first elastic member 46 in the pre-compressed state.

[0245] The second fixing frame 22 rotates counterclockwise, driving the second damping swing arm 32 to rotate counterclockwise. The second body 321 and the second sliding body 322 slide in the direction B2 relative to the second fixing frame 22. The second roller 52 slides along the fourth abutting surface 161 toward the fifth abutting surface 162, thereby driving the second bracket 51 to move along the second mounting slot 3217 toward the direction B2. The second roller abuts the third slider 53 and the fourth slider 54, causing the third slider 53 to move along the second sliding hole 316 toward the negative direction of the Y axis, and the fourth slider 54 to move along the fourth sliding hole 326 toward the positive direction of the Y axis. This compresses the second elastic member 56, causing it to be compressed, thereby placing the rotating mechanism 100 in the first intermediate state.

[0246] When the rotating mechanism 100 is in the first intermediate state, the position where the first roller 42 contacts the base 10 is the second position B. The second position B may be the connection between the first abutting surface 151 and the second abutting surface 152, or may be near the connection between the first abutting surface 151 and the second abutting surface 152. The position where the second roller 52 contacts the base 10 may be the connection between the fourth abutting surface 161 and the fifth abutting surface 162, or may be near the connection between the fourth abutting surface 161 and the fifth abutting surface 162.

[0247] Please also refer to Figure 26 , Figure 26 yes Figure 19 The curve a is a curve showing the change of the damping force of the rotating mechanism 100 with the rotation angle when the rotating mechanism 100 switches from the folded state to the unfolded state.

[0248] The "damping force" mentioned here can be the first damping force, that is, the damping force exerted on the first fixing frame 21; or the damping force can be the second damping force, that is, the damping force exerted on the second fixing frame 22; or the damping force can be the sum of the first damping force and the second damping force.

[0249] When the rotating mechanism 100 switches from the deployed state to the first intermediate state, as the deployed angle gradually increases, the elastic compression amount of the first elastic member 46 increases, and the elastic force F t Gradually increases. Combining equations (6) and (7), we can see that the elastic force F t As the holding force F on the first bracket 41 gradually increases, x Gradually increases, the holding force F of the first bracket 41 on the first roller 42 x 'Gradually increase, F a The first damping force gradually increases, that is, the damping force applied to the rotating mechanism 100 gradually increases, and the user's damping feeling gradually increases.

[0250] See also Figure 27 and Figure 28 , Figure 27 yes Figure 19 The schematic diagram of the partial structure of the rotating mechanism 100 shown is in the second intermediate state, Figure 28 yes Figure 27 FIG. 1 is a schematic cross-sectional structural diagram of the rotating mechanism 100 .

[0251] When the rotating mechanism 100 is in the second intermediate state, the angle between the first fixing frame 21 and the second fixing frame 22 is β2. β2 is smaller than β1 and smaller than 90 degrees. In this embodiment, β2 is approximately 140 degrees.

[0252] When the rotating mechanism 100 switches from the first intermediate state to the second intermediate state, the first fixing frame 21 and the first damping swing arm 31 continue to rotate clockwise, and the first roller 42 slides from the second position B along the second abutting surface 152 toward the third abutting surface 153. The first elastic member 46 elastically recovers, driving the first slider 43 and the second slider 44 to move away from each other to abut the first bracket 41, causing the first bracket 41 to move toward direction A1.

[0253] Combine Figure 24 As shown, when the rotating mechanism 100 is in the first intermediate state and has a tendency to move toward the second intermediate state,

[0254] F n1 =F t / (sinα+μ*cosα), F x1 =F t *(cosα-μ* sinα) / (sinα+μ*cosα). (8)

[0255] When the first bracket 41 moves toward the direction A1 and the first elastic member 46 elastically recovers, the elastic force of the first elastic member 46 gradually decreases, and the elastic force F exerted by the first elastic member 46 on the first slider 43 and the second slider 44 is t Gradually decreases. From equation (8), we can know that the resistance force F on the first bracket 41 is x Gradually decreases, the holding force F of the first bracket 41 on the first roller 42 x 'Gradually decreases.

[0256] Combine Figure 25 、 Figure 28 From equation (7), we can see that the holding force F x ' and friction force F f3 The angle θ between them gradually increases, and the damping force F is applied to the first roller 42 when it rotates relative to the base 10. a Gradually decreases, that is, the resistance encountered by the first roller 42 when rotating relative to the base 10 gradually decreases, that is, the first damping force provided by the first damping member 40 for the rotation of the first fixing frame 21 gradually decreases.

[0257] Similarly, during the transition of the rotation mechanism 100 from the first intermediate state to the second intermediate state, the second fixed frame 22 and the second damping swing arm 32 continue to rotate clockwise, the second roller 52 slides along the fifth abutting surface 162 toward the sixth abutting surface 163, and the second elastic member 56 elastically recovers, driving the third slider 53 and the fourth slider 54 to move away from each other, thereby abutting the second bracket 51 and causing the second bracket 51 to move toward direction B1. At this point, the force acting on the second roller 52 during its rotation relative to the base 10 gradually decreases. In other words, the second damping force provided by the second damping member 50 for the rotation of the second fixed frame 22 gradually decreases, and the damping force acting on the rotation mechanism 100 gradually decreases, resulting in a gradually weakening damping feel for the user.

[0258] like Figure 28 As shown, when the rotating mechanism 100 is in the second intermediate state, the position where the first roller 42 contacts the base 10 is the third position C. The third position C can be at the connection between the second abutting surface 152 and the third abutting surface 153, or near the connection between the second abutting surface 152 and the third abutting surface 153. The position where the second roller 52 contacts the base 10 can be at the connection between the fifth abutting surface 162 and the sixth abutting surface 163, or near the connection between the fifth abutting surface 162 and the sixth abutting surface 163.

[0259] When the rotating mechanism 100 is in the second intermediate state, the holding force F x ' and friction force F f3 The angle θ between them is greater than 90 degrees, F x'|cosθ|=F f3 =μ1F n3 That is, the damping force F exerted on the first roller 42 when it rotates relative to the base 10 is a =μ1F n3 -F x '|cosθ|=0. That is, the first damping member 40 provides a first damping force of 0 for the rotation of the first fixing bracket 21 .

[0260] Similarly, when the rotating mechanism 100 is in the second intermediate state, the damping force applied to the second roller 52 when rotating relative to the base 10 is zero, and the second damping force provided by the second damping member 50 for the rotation of the second fixing frame 22 is zero. In other words, the damping force applied to the rotating mechanism 100 is zero.

[0261] Combine Figure 26 When the rotating mechanism 100 switches from the first intermediate state to the second intermediate state, the damping force received by the rotating mechanism 100 during rotation gradually decreases from the maximum value until it decreases to 0.

[0262] In this embodiment, by providing a second abutting surface 152 on the base 10, and by making the angle between the second abutting surface 152 and the positive X-axis greater than the angle between the first abutting surface 151 and the positive X-axis, the damping force on the first fixed frame 21 gradually decreases as the rotating mechanism 100 rotates further from the first intermediate state to the folded state. Furthermore, in this embodiment, by providing a fifth abutting surface 162 on the base 10, and by making the angle between the fifth abutting surface 162 and the negative X-axis greater than the angle between the fourth abutting surface 161 and the negative X-axis, the damping force on the second fixed frame 22 gradually decreases as the rotating mechanism 100 rotates further from the first intermediate state to the folded state. This gradually reduces the damping force on the rotating mechanism 100, thereby preventing the rotating mechanism 100 from being subjected to excessive damping force that would otherwise make it difficult to rotate. In other words, the rotating mechanism 100 provided in this embodiment ensures a damping feel while also preventing the damping force from being so excessive that it would hinder rotation.

[0263] It can be understood that in this embodiment, when the rotating mechanism 100 rotates from the first intermediate state to the second intermediate state, the friction force F f1 and elastic force F t The angle between them is greater than 90 degrees and less than 180 degrees. At this time, the elastic force F t With friction F f1 The force component in the opposite direction can reduce the friction force F f1The resultant force in the direction of rotation can reduce the wear between the first sliding surface 4311 and the first abutting surface 4121, that is, the wear between the first slider 43 and the first bracket 41 can be reduced, thereby avoiding the change of the friction coefficient between the first sliding surface 4311 and the first abutting surface 4121 caused by wear, so as to avoid the instability of the damping force provided by the rotating mechanism 100.

[0264] See also Figure 29 and Figure 30 , Figure 29 yes Figure 19 The schematic diagram of the partial structure of the rotating mechanism 100 shown is in the third intermediate state, Figure 30 yes Figure 29 The cross-sectional structure diagram of the rotating mechanism 100 is shown. When the rotating mechanism 100 is in the third intermediate state, the angle between the first fixing frame 21 and the second fixing frame 22 is β3. β3 is smaller than β2. In this embodiment, β3 is approximately 80 degrees.

[0265] During the process of switching the rotating mechanism 100 from the second intermediate state to the third intermediate state, the first fixing frame 21 and the first damping swing arm 31 continue to rotate clockwise, the first roller 42 slides along the third abutting surface 153 toward the top surface 103, and the first elastic member 46 continues to elastically recover, driving the first slider 43 and the second slider 44 to move away from each other to abut the first bracket 41, so that the first bracket 41 continues to move toward the A1 direction.

[0266] like Figure 30 As shown in the enlarged figure P3, F a =F x '|cosθ|-μ1F n3 Wherein, θ is greater than 90 degrees, and |cosθ| refers to the absolute value of cosθ. When the rotating mechanism 100 switches from the second intermediate state to the third intermediate state, and is not in the second intermediate state to switch to the third intermediate state, F x '|cosθ|>μ1F n3 , F a >0. Damping force F a The direction of the friction force F f3 The direction is opposite to that of the damping force F a The direction of the damping force F is the same as the direction of movement of the first roller 42 relative to the base 10. a It can promote the first roller 42 to rotate relative to the base 10. At this time, the damping force F a It can be understood as the force that pushes the first roller 42 to move relative to the base 10. In other words, the damping force F a This can promote the rotation of the first fixing frame 21 and the first damping swing arm 31. At this time, the first damping force can be understood as the thrust for pushing the first fixing frame 21 to rotate.

[0267] Combine Figure 26 During the process of the rotating mechanism 100 switching from the second intermediate state to the third intermediate state, the first bracket 41 moves toward the direction A1, and the first elastic member 46 elastically recovers, the elastic force of the first elastic member 46 gradually decreases, and the holding force F of the first bracket 41 on the first roller 42 is x ' gradually decreases. At the same time, the holding force F x ' and friction force F f3 The angle θ between them is greater than 90 degrees and gradually increases, and |cosθ| gradually increases. x The reduction of F a The effect of |cosθ| on F is greater than that of a When the influence of a As F increases, the value of the first damping force on the first fixing frame 21 gradually increases, that is, the thrust on the first fixing frame 21 when it rotates gradually increases. x The reduction of F a The effect of |cosθ| on F is smaller than that of |cosθ| a When the influence of a The value of the first damping force received by the first fixing frame 21 gradually decreases, that is, the thrust received by the first fixing frame 21 during rotation gradually decreases.

[0268] Similarly, as the rotation mechanism 100 switches from the second intermediate state to the third intermediate state, the second fixed frame 22 and the second damping swing arm 32 continue to rotate counterclockwise, the second roller 52 slides along the sixth abutting surface 163 toward the top surface 103, and the second elastic member 56 continues to elastically recover, driving the third slider 53 and the fourth slider 54 to move away from each other, thereby abutting the second bracket 51 and causing the second bracket 51 to continue to move toward direction B1. At this time, the direction of the damping force applied to the second roller 52 is opposite to the direction of rotation of the second roller 52 relative to the base 10. The direction of the second damping force provided by the second damping member 50 to the second fixed frame 22 is the same as the direction of rotation of the second fixed frame 22 and the second damping swing arm 32. This second damping force promotes the rotation of the second fixed frame 22 and the second damping swing arm 32. At this point, the second damping force can be understood as the thrust that propels the second fixed frame 22 to rotate. Furthermore, as the rotation mechanism 100 gradually rotates from the second intermediate state to the third intermediate state, the second damping force first gradually increases and then gradually decreases.

[0269] Combine Figure 26During the process of switching the rotating mechanism 100 from the second intermediate state to the third intermediate state, the damping force applied to the rotating mechanism 100 is negative, and the value of the damping force gradually increases from 0 and then gradually decreases to 0. In other words, during the process of switching the rotating mechanism 100 from the second intermediate state to the third intermediate state, the damping assembly 1 can promote the rotation of the rotating mechanism 100, and the thrust provided by the damping assembly 1 for the rotation of the rotating mechanism 100 first gradually increases and then gradually decreases until it decreases to 0.

[0270] When the rotating mechanism 100 is in the third intermediate state, the first roller 42 contacts the base 10 at the fourth position D. The fourth position D is located at the third abutting surface 153 . The second roller 52 contacts the base 10 at the sixth abutting surface 163 .

[0271] In this embodiment, by providing a third abutting surface 153 on the base 10, and by having the third abutting surface 153 inclined in the opposite direction to the second abutting surface 152, when the rotating mechanism 100 rotates further from the second intermediate state toward the folded state, the direction of the first damping force shifts to the same direction as the rotation of the first fixing frame 21, thereby providing thrust for the rotation of the first fixing frame 21. Furthermore, in this embodiment, by providing a sixth abutting surface 163 on the base 10, and by having the sixth abutting surface 163 inclined in the opposite direction to the fifth abutting surface 162, when the rotating mechanism 100 rotates further from the second intermediate state toward the folded state, the direction of the second damping force shifts to the same direction as the rotation of the second fixing frame 22, thereby providing thrust for the rotation of the second fixing frame 22, thereby pushing the rotating mechanism 100 further toward the folded state, thereby achieving a force-saving effect.

[0272] Moreover, in the present embodiment, during the process of the rotating mechanism 100 switching from the second intermediate state to the third intermediate state, the thrust first increases and then decreases. While ensuring that the thrust received by the rotating mechanism 100 is sufficient to rotate it to the folded state, it can also avoid the rotating mechanism 100 from having too large a thrust when it is about to rotate to the folded state, thereby affecting the user's experience.

[0273] Please combine Figure 31 and Figure 32 , Figure 31 yes Figure 19 The structure diagram of the rotating mechanism 100 shown is in a folded state. Figure 32 yes Figure 31 FIG. 1 is a schematic cross-sectional structural diagram of the rotating mechanism 100 .

[0274] When the rotation mechanism 100 switches from the third intermediate state to the folded state, the first fixing frame 21 and the first damping swing arm 31 continue to rotate clockwise, and the first roller 42 moves away from the base 10. In the direction of rotation of the first roller 42 relative to the base 10, the force acting on the first roller 42 is zero. The damping force acting on the first roller 42 during this rotation is zero. In other words, the damping force provided by the first damping member 40 to the first fixing frame 21 and the first damping swing arm 31 is zero, i.e., the first damping force is zero.

[0275] Similarly, when the rotation mechanism 100 switches from the third intermediate state to the folded state, the second fixing frame 22 and the second damping swing arm 32 continue to rotate counterclockwise, and the second roller 52 moves away from the base 10. Along the rotational direction of the second roller 52 relative to the base 10, the force acting on the second roller 52 is zero. The damping force acting on the second roller 52 during this rotation is zero, meaning that the damping force provided by the second damping member 50 to the second fixing frame 22 and the second damping swing arm 32 is zero, i.e., the second damping force is zero.

[0276] When the rotating mechanism 100 is in the folded state, the first fixing frame 21 and the second fixing frame 22 are folded relative to each other, and the first damping pendulum arm 31 and the second damping pendulum arm are folded relative to each other. The first fixing frame 21 and the second fixing frame 22 are arranged approximately parallel to each other. In other words, the angle between the first fixing frame 21 and the second fixing frame 22 is approximately 0 degrees. The foldable portion 350 of the display screen 300 is located outside the rotating mechanism 100. The foldable portion 350 is curved into an arc and is arranged relative to the outer surfaces of the first fixing frame 21, the outer surfaces of the second fixing frame 22, and the outer surfaces of the base 10.

[0277] It can be understood that when the rotating mechanism 100 switches from the third intermediate state to the folded state, the thrust received by the rotating mechanism 100 is 0, which can avoid excessive thrust when the rotating mechanism 100 is about to rotate to the folded state, affecting the user's experience.

[0278] Combine Figure 26 When the rotating mechanism 100 switches from the unfolded state to the second intermediate state, the damping force received by the rotating mechanism 100 first gradually increases, and then gradually decreases until it decreases to 0. During this process, the damping force provided by the damping component 1 can prevent the rotation of the rotating mechanism 100, thereby providing the user with a damping feel. When the rotating mechanism 100 further switches from the second intermediate state to the third intermediate state, the direction of the damping force received by the rotating mechanism 100 is the same as the direction of rotation. The damping force provided by the damping component 1 can promote the rotation of the rotating mechanism 100, thereby accelerating the rotation of the rotating mechanism 100 and playing a labor-saving role. During the process of the rotating mechanism 100 rotating from the third intermediate state to the folded state, the damping force provided by the damping component 1 is 0, which can avoid excessive thrust when the rotating mechanism 100 is about to rotate to the folded state, affecting the user's experience.

[0279] See also Figure 26 、 Figures 29 to 32 ,in, Figure 26 Curve b in FIG. 1 is a curve showing the change of the damping force on the rotating mechanism 100 with the rotation angle during the process of the rotating mechanism 100 switching from the folded state to the unfolded state.

[0280] When the rotating mechanism 100 switches from the folded state to the third intermediate state, the first fixing frame 21 rotates counterclockwise, driving the first damping swing arm 31 to rotate counterclockwise, causing the first body 311 and the first sliding body 312 to slide in the direction A1 relative to the first fixing frame 21. The second fixing frame 22 rotates clockwise, driving the second damping swing arm 32 to rotate clockwise, causing the second body 321 and the second sliding body 322 to slide in the direction B1 relative to the second fixing frame 22.

[0281] During this process, the first roller 42 and the base 10 are not in contact, and the second roller 52 and the base 10 are not in contact. The first damping member 40 and the second damping member 50 are both in a state of force equilibrium. The damping force provided by the damping assembly 1 to the rotating mechanism 100 is zero. Under the action of an external force, the rotating mechanism 100 gradually unfolds from its folded state. Since the rotating mechanism 100 is not subjected to a damping force at this point, the external force required for unfolding the rotating mechanism 100 is reduced, thereby saving effort.

[0282] like Figure 30 As shown, when the rotating mechanism 100 is in the third intermediate state, the first roller 42 contacts the third abutting surface 153 of the first protrusion 15 , and the second roller 52 contacts the sixth abutting surface 163 of the second protrusion 16 .

[0283] See also Figure 33 and Figure 34 , Figure 33 yes Figure 31 The schematic structural diagram of the rotating mechanism 100 shown is in the fourth intermediate state. Figure 34 yes Figure 33 FIG. 1 is a schematic cross-sectional structural diagram of the rotating mechanism 100 .

[0284] When the rotating mechanism 100 is in the fourth intermediate state, the angle between the first bracket 41 and the second bracket 51 is β4. In this embodiment, β4 is approximately 166°. In other embodiments, β4 may be slightly greater than 166° or slightly less than 166°. In other words, β4 and β1 may be equal or slightly different.

[0285] The rotating mechanism 100 is in the third intermediate state (eg Figure 30 ) turns to the second intermediate state (such as Figure 28 ), and then rotate to the fourth intermediate state (such as Figure 34), the first roller 42 first slides along the third abutting surface 153, and then slides along the second abutting surface 152 toward the first abutting surface 151. The first roller 42 abuts the first bracket 41, causing the first bracket 41 to move toward the direction A2. The first elastic member 46 is gradually compressed, and the elastic force F of the first elastic member 46 on the first slider 43 and the second slider 44 is t Gradually increase.

[0286] like Figure 30 As shown in the enlarged view P4, the damping force F on the first roller 42 is a =F f3 +F x 'cosθ. When θ is less than 90 degrees, or when θ is greater than 90 degrees, and F f3 Greater than F x '|cosθ|, the damping force F a The direction of F f3 The direction of the damping force F a The direction of the damping force F is opposite to the sliding direction of the first roller 42 relative to the base 10. a The first roller 42 can be prevented from rotating relative to the base 10. At this time, the direction of the first damping force provided by the first damping member 40 to the rotation of the first fixing frame 21 is opposite to the rotation direction of the first fixing frame 21. The first damping force can prevent the rotation of the first fixing frame 21, thereby providing a damping feeling to the user.

[0287] As the rotating mechanism 100 gradually rotates from the third intermediate state to the fourth intermediate state, the elastic force F of the first elastic member 46 on the first slider 43 and the second slider 44 is x Gradually increases, the holding force F of the first bracket 41 on the first roller 42 x 'Gradually increase, the holding force F x ' and friction force F f3 The angle θ between them gradually decreases, and cosθ gradually decreases.

[0288] When the holding force F x The increase of F a The effect of cosθ reduction on F is greater than a When the influence of a Gradually increases. When F x The increase of F a The effect is less than that of cosθ, which reduces F a When the influence of a Gradually decrease.

[0289] That is, as the rotating mechanism 100 rotates from the third intermediate state to the fourth intermediate state, the force F acting on the first roller 42 is aThe first damping force first increases and then decreases. The damping force provided by the first damping member 40 for the rotation of the first fixing bracket 21 first increases and then decreases.

[0290] Similarly, as the rotating mechanism 100 rotates from the third intermediate state to the fourth intermediate state, the second roller 52 first slides along the sixth abutting surface 163 and then slides along the fifth abutting surface 162 toward the fourth abutting surface 161. The second roller 52 abuts the second bracket 51, causing it to move in the direction B2. The second elastic member 56 is gradually compressed, and the elastic force exerted by the second elastic member 56 on the third and fourth sliders 53 and 54 gradually increases. The second damping force provided by the second damping member 50 to the second fixed bracket 22 first increases and then decreases.

[0291] Combine Figure 26 When the rotating mechanism 100 switches from the third intermediate state to the fourth intermediate state, the damping force acting on the rotating mechanism 100 first gradually increases and then gradually decreases. During this process, the damping force provided by the damping component 1 can prevent the rotation of the rotating mechanism 100, thereby providing a damping feel for the user.

[0292] like Figure 34 As shown in the enlarged view in FIG, when the rotating mechanism 100 is in the fourth intermediate state, the position where the first roller 42 contacts the base 10 is the fifth position E. When the deployment angle β4 when the rotating mechanism 100 is in the fourth state is the same as the deployment angle β1 when the rotating mechanism 100 is in the first intermediate state, the fifth position E coincides with the second position B, that is, the fifth position E is located at the connection between the first abutting surface 151 and the second abutting surface 152. In this embodiment, β4<β1, and the fifth position E is located on the side of the second position B away from the first abutting surface 151. The position where the second roller 52 contacts the base 10 can be the connection between the fourth abutting surface 161 and the fifth abutting surface 162, or it can be near the connection between the fourth abutting surface 161 and the fifth abutting surface 162.

[0293] At this time, the holding force F x ' and friction force F f3 The angle θ between them is greater than 90 degrees, F x '|cosθ|=F f3 =μ1F n3 That is, the damping force F exerted on the first roller 42 when it rotates relative to the base 10 is a =μ1F n3 -F x '|cosθ|=0. That is, the first damping member 40 provides a first damping force of 0 for the rotation of the first fixing bracket 21 .

[0294] Similarly, when the rotating mechanism 100 is in the fourth intermediate state, the damping force applied to the second roller 52 when rotating relative to the base 10 is zero, and the second damping force provided by the second damping member 50 for the rotation of the second fixing bracket 22 is zero. In other words, the damping force applied to the rotating mechanism 100 is zero.

[0295] Combine Figure 26 During the process of switching the rotating mechanism 100 from the third intermediate state to the fourth intermediate state, the damping force applied to the rotating mechanism 100 during rotation first increases and then decreases until it reaches 0. The rotating mechanism 100 provided in this embodiment ensures sufficient damping force during rotation to provide a damping feel while also preventing the rotating mechanism 100 from being difficult to deploy due to excessive damping force.

[0296] See also Figure 34 and Figure 21 During the process of the rotating mechanism 100 rotating from the fourth intermediate state to the unfolded state, the first roller 42 slides from the fourth position toward the first abutting surface 151. The first roller 42 gradually releases the first bracket 41, causing the first bracket 41 to move toward the direction A1. The first elastic member 46 is gradually released, and the elastic force F of the first elastic member 46 on the first slider 43 and the second slider 44 is t Gradually decrease.

[0297] like Figure 21 As shown in the enlarged view P2 in FIG, the rotating mechanism 100 is in the process of rotating from the fourth intermediate state to the unfolded state, θ>90°, and F x '|cosθ|>F f3 , F a =F x '|cosθ|-F f3 At this time, F a The direction of F f3 In the opposite direction. That is, F a The direction of the damping force F is the same as the direction of movement of the first roller 42 relative to the base 10. a It can promote the first roller 42 to rotate relative to the base 10, that is, the damping force F a It can be understood as the thrust that pushes the first roller 42 to rotate relative to the base 10. In other words, the damping force F a It can promote the rotation of the first fixing frame 21 and the first damping swing arm 31. The first damping force can be understood as the thrust that pushes the first fixing frame 21 to rotate.

[0298] As the rotating mechanism 100 gradually rotates from the fourth intermediate state to the unfolded state, the first elastic member 46 elastically recovers, the elastic force of the first elastic member 46 gradually decreases, and the holding force F of the first bracket 41 on the first roller 42 x 'Gradually decreases, at the same time, the holding force F x' and friction force F f3 The included angle θ is greater than 90 degrees and gradually increases, and |cosθ| gradually increases. a The influence of F x The reduction of F a The impact of F a The first damping force received by the first fixing frame 21 gradually increases, that is, the thrust received by the first fixing frame 21 during rotation gradually increases.

[0299] Similarly, during the rotation of the rotation mechanism 100 from the fourth intermediate state to the deployed state, the second roller 52 moves in the same direction relative to the base 10. The damping force provided by the second damping member 50 can facilitate the rotation of the second fixing frame 22 and the second damping swing arm 32. The second damping force can be understood as the thrust that propels the second fixing frame 22 to rotate. Furthermore, as the rotation mechanism 100 gradually rotates from the fourth intermediate state to the deployed state, the thrust provided by the second damping member 50 to the rotation of the second fixing frame 22 and the second damping swing arm 32 gradually increases.

[0300] Combine Figure 26 During the rotation of the rotating mechanism 100 from the fourth intermediate state to the deployed state, the direction of the damping force applied to the rotating mechanism 100 is the same as the direction of rotation. The damping force provided by the damping assembly 1 can promote the rotation of the rotating mechanism 100, thereby accelerating the rotation of the rotating mechanism 100, saving effort, and facilitating the deployment of the rotating mechanism 100. Furthermore, as the rotating mechanism 100 gradually rotates from the fourth intermediate state to the deployed state, the thrust provided by the damping assembly 1 to the rotation of the rotating mechanism 100 gradually increases.

[0301] After the rotating mechanism 100 rotates to the deployed state, the thrust provided by the damping assembly 1 is positively correlated with the damping force received by the rotating mechanism 100 when it rotates to the folded state. That is, the thrust can prevent the rotating mechanism 100 from switching from the deployed state to the folded state, and can provide damping force for the rotating mechanism 100 to switch from the deployed state to the folded state.

[0302] It needs to be explained that in Figure 26 In curve a, a positive ordinate value indicates that the damping force on the rotating mechanism 100 can prevent the rotation of the rotating mechanism 100. That is, a positive ordinate value indicates that the direction of the damping force on the rotating mechanism 100 is opposite to the direction of rotation of the rotating mechanism 100 when the rotating mechanism 100 switches from the deployed state to the folded state. A negative ordinate value indicates that the damping force on the rotating mechanism 100 can promote the rotation of the rotating mechanism 100. That is, a positive ordinate value indicates that the direction of the damping force on the rotating mechanism 100 is the same as the direction of rotation of the rotating mechanism 100 when the rotating mechanism 100 switches from the deployed state to the folded state.

[0303] exist Figure 26 In curve b, a negative ordinate value indicates that the damping force on the rotating mechanism 100 can prevent the rotation of the rotating mechanism 100. That is, a positive ordinate value indicates that the direction of the damping force on the rotating mechanism 100 is opposite to the direction of rotation of the rotating mechanism 100 when the rotating mechanism 100 switches from the folded state to the unfolded state. A positive ordinate value indicates that the damping force on the rotating mechanism 100 can promote the rotation of the rotating mechanism 100. That is, a positive ordinate value indicates that the direction of the damping force on the rotating mechanism 100 is the same as the direction of rotation of the rotating mechanism 100 when the rotating mechanism 100 switches from the folded state to the unfolded state.

[0304] See also Figure 35 , Figure 35 It is a partial structural diagram of the rotating mechanism 100 provided in the second embodiment of the present application.

[0305] This embodiment and Figure 5 The difference between the illustrated embodiment and the illustrated embodiment is that the first elastic member 46 in this embodiment is a flat spring. In other words, the thickness of the first elastic member 46 is very small. In other words, the dimension of the first elastic member 46 along the Z direction is much smaller than the dimensions of the first elastic member 46 along the X direction and the Y direction. Using a flat spring as the first elastic member 46 can reduce the dimension of the first damping member 40 in the Z direction, thereby reducing the dimension of the rotating mechanism 100 in the Z direction, which is conducive to achieving a thinner foldable electronic device 1000. For example, the first elastic member 46 is a flat, shaped spring. Here, a "shaped spring" refers to a spring whose structure is different from that of a conventional circular cross-section coil spring.

[0306] See also Figure 36a , Figure 36a yes Figure 35 FIG. 1 is a schematic diagram of an enlarged structure of the first elastic member 46 in the rotating mechanism 100 .

[0307] In this embodiment, the first elastic member 46 has a serpentine structure. The first elastic member 46 includes a plurality of first deformable walls 461 and a plurality of second deformable walls 462. The first deformable walls 461 and the plurality of second deformable walls 462 are both linear. Moreover, the length direction of the first deformable wall 461 is parallel to the X direction. The plurality of first deformable walls 461 are arranged side by side and spaced apart along the Y direction. A second deformable wall 462 is connected between every two adjacent first deformable walls 461, and the second deformable wall 462 is connected to the end of the first deformable wall 461. In this embodiment, there are six first deformable walls 461 and five second deformable walls 462. The six first deformable walls 461 and the five second deformable walls 462 are staggered and connected in sequence. When the first elastic member 46 is in a natural state, there is a gap between two adjacent second deformable walls 462. When the first elastic member 46 is compressed along the opposite ends of the first elastic member 46 in the Y direction, the gap between two adjacent second deformable walls 462 is reduced, and the first elastic member 46 is compressed, thereby generating elastic force.

[0308] In this embodiment, by adjusting the thickness of the first deformable wall 461 and / or the second deformable wall 462, the elastic coefficient of the first elastic member 46 can be changed, thereby changing the elastic restoring force of the first elastic member 46, and further, the damping force provided by the first damping member 40. The thicker the first deformable wall 461 or the second deformable wall 462, the greater the elastic coefficient of the first elastic member 46. Under the same deformation, the greater the elastic force and elastic restoring force of the first elastic member 46, the greater the damping force provided by the first damping member 40, and the stronger the damping feel provided by the rotation mechanism 100.

[0309] Combine Figure 35 The structure of the second elastic member 56 is identical to that of the first elastic member 46. That is, the second elastic member 56 is a flat spring. In this embodiment, using a flat spring as the second elastic member 56 reduces the size of the second damping member 50 in the Z direction, thereby further reducing the size of the rotating mechanism 100 in the Z direction and further reducing the thickness of the foldable electronic device 1000.

[0310] See also Figure 36b , Figure 36b yes Figure 35 The structure diagram of the first elastic member 46 in the rotating mechanism 100 in the second embodiment is shown.

[0311] The first elastic member 46b shown in this embodiment is Figure 36a The difference between the first elastic member 46 shown is that, in this embodiment, the second deformable wall 462b is arc-shaped. In other words, the arc-shaped second deformable wall 462b creates a smooth transition between two adjacent first deformable walls 461b, thereby evenly applying force to the first elastic member 46b and preventing the first elastic member 46b from breaking due to uneven force.

[0312] See also Figure 36c , Figure 36c yes Figure 35 FIG. 1 is a schematic structural diagram of the first elastic member 46 in the rotating mechanism 100 in the third embodiment.

[0313] The first elastic member 46c shown in this embodiment Figure 36a The difference between the illustrated first elastic member 46 and the second elastic member 46 is that, in this embodiment, the first deformable walls 461c at both ends are trapezoidal in shape, and the thickness of the end adjacent to the second deformable wall 462c is greater than the thickness of the end distal from the second deformable wall 462c. This increases the connection strength between the first and second deformable walls 461c, 462c. The angle between the extension direction of the first deformable wall 461c in the middle and the X-direction is greater than 0 degrees, thereby increasing the length of the first elastic member 46c and thereby increasing the deformation of the first elastic member 46c.

[0314] See also Figure 36d , Figure 36d yes Figure 35 FIG. 1 is a schematic structural diagram of the first elastic member 46 in the rotating mechanism 100 in the fourth embodiment.

[0315] In this embodiment, the first elastic member 46d includes a plurality of deformable segments 463d and a plurality of connecting segments 464d. The deformable segments 463d are rounded, strip-shaped, and annular structures. Each deformable segment 463d forms a closed, hollowed-out area 465d. The hollowed-out area 465d is a rounded rectangular shape. The plurality of deformable segments 463d and the plurality of connecting segments 464d are arranged alternately and fixedly connected. In this embodiment, there are four deformable segments 463d and three connecting segments 464d. The width of the deformable segments 463d is parallel to the Y direction, and the length is parallel to the X direction. The four deformable segments 463d are arranged side by side and spaced apart along the Y direction, with a connecting segment 464d connecting every two adjacent deformable segments 463d.

[0316] When the first elastic member 46d is compressed at the opposite ends along the elastic direction of the first elastic member 46d, the deformation section 463d is squeezed and deformed, and the size of the hollow area 465d in the Y direction is reduced, that is, the size of the deformation section 463d in the width direction (Y direction) is reduced. At the same time, the distance between the two adjacent deformation sections 463d is reduced, so that the first elastic member 46d is compressed and an elastic restoring force is generated, thereby providing a damping force for the rotating mechanism 100.

[0317] See also Figure 36e , Figure 36e yes Figure 35 FIG. 1 is a schematic structural diagram of the first elastic member 46 in the rotating mechanism 100 in the fifth embodiment.

[0318] The first elastic member 46e shown in this embodiment is Figure 36d The difference between the first elastic member 46 shown is that, in this embodiment, the deformable segments 463e are generally diamond-shaped. The hollowed-out area 465e formed by each deformable segment 463e is also diamond-shaped. In this embodiment, there are three deformable segments 463e and two connecting segments 464e. The three deformable segments 463e are arranged side by side and spaced apart along the Y direction, with a connecting segment 464e connecting every two adjacent deformable segments 463e.

[0319] In this embodiment, by setting the deformation section 463e and the hollow area 465e to a diamond shape, the length of the first elastic member 46 can be increased, that is, the size along the Y direction can be increased, and the deformable amount of the first elastic member 46 can be increased, thereby increasing the maximum elastic force that the first elastic member 46 can provide.

[0320] See also Figure 36f , Figure 36f yes Figure 35 FIG. 1 is a schematic structural diagram of the first elastic member 46 in the rotating mechanism 100 in the sixth embodiment.

[0321] In this embodiment, the first elastic member 46f is flat. The first elastic member 46f includes a connecting section 464f and a deformable section 463f. There are two connecting sections 464f. The two connecting sections 464f are arranged side by side and spaced apart along the Y direction. The deformable section 463f includes a first deformable wall 461f. The first deformable wall 461f is a long, arc-shaped structure. The first deformable wall 461f is connected between the two connecting sections 464f. In this embodiment, there are multiple first deformable walls 461f. Each first deformable wall 461f is connected between two connecting sections 464f, and the multiple first deformable walls 461f are spaced apart along the X direction. In this embodiment, there are eight first deformable walls 461f. Four of the first deformable walls 461f are curved toward the positive direction of the X-axis, and the other four first deformable walls 461f are curved toward the negative direction of the X-axis.

[0322] When the first elastic member 46f is compressed at its opposite ends in the Y direction, the two connecting segments 464f move toward each other, increasing the curvature of the first deformable wall 461f, thereby generating an elastic force. In this embodiment, by varying the thickness of the first deformable wall 461f, the elastic modulus of the first elastic member 46f can be varied, thereby varying the magnitude of the elastic force under the same amount of deformation.

[0323] See also Figure 36g , Figure 36g yes Figure 35 FIG. 1 is a schematic structural diagram of the first elastic member 46 in the rotating mechanism 100 in the seventh embodiment.

[0324] In this embodiment, the first elastic member 46g is flat. The first elastic member 46g includes two parts. The two parts are the first part 466g and the second part 467g respectively. Each part has a structure similar to that of Figure 36b the first elastic member 46 shown. That is, both the first part 466g and the second part 467g are serpentine structures. The opposite ends of the first part 466g in its extending direction both face the second part 467g. The first part 466g and the second part 467g are arranged in mirror symmetry and fixedly connected. Among them, the end of the first part 466g in the positive Y-axis direction is fixedly connected to the end of the second part 467g in the positive Y-axis direction, and the end of the first part 466g in the negative Y-axis direction is fixedly connected to the end of the second part 467g in the negative Y-axis direction.

[0325] When the first elastic member 被挤压并发生形变,从而产生弹性力。本实施例中,通过在第一弹性件46g设置均可以发生形变的两个部分,使得第一弹性件46g在形变量相同的情况下具有更大的弹性力,从而可以为转动机构100的转动提供更大的阻尼力。

[0326] Please refer to Figure 36h , Figure 36h which is Figure 35 a schematic structural diagram of the first elastic member 46 in the eighth embodiment of the rotation mechanism 100 shown.

[0327] The difference between the first elastic member 46h shown in this embodiment and Figure 36g the first elastic member 46g shown is that, in this embodiment, the structures of the first part 466h and the second part 467h are similar to those of Figure 36c the first elastic member 46c shown.

[0328] Please refer to Figure 36i , Figure 36i which is Figure 35 a schematic structural diagram of the first elastic member 46 in the ninth embodiment of the rotation mechanism 100 shown.

[0329] In this embodiment, the first elastic member 46i is flat and in the shape of a "hui" character. That is, the first elastic member 46i is formed by winding outward with one end of the elastic wall as the center point.

[0330] When the first elastic member 46i is compressed along the opposite ends in the Y direction, the elastic wall is squeezed and deformed, thereby generating an elastic force.

[0331] Please refer to Figure 37 and Figure 38 , Figure 37 This is a partial structural diagram of the rotation mechanism 100 provided in the third embodiment of the present application. Figure 37 The rotating mechanism 100 is shown in an unfolded state. Figure 38 yes Figure 37 The diagram shows a partial structure of the rotating mechanism 100 in a folded state.

[0332] The rotating mechanism 100 shown in this embodiment is Figure 5 The difference of the rotating mechanism 100 shown is that, in this embodiment, the first abutting surface 4121 of the first bracket 41 is parallel to the X direction, and the first sliding surface 4311 of the first slider 43 is parallel to the X direction. The second abutting surface 4131 of the first bracket 41 is parallel to the X direction, and the second sliding surface 4411 of the second slider 44 is parallel to the X direction.

[0333] The first damping member 40 also includes a first connecting rod 47 and a second connecting rod 48. The extension direction of the first connecting rod 47 intersects the X-direction and is not perpendicular to it. That is, the angle between the extension direction of the first connecting rod 47 and the X-direction is greater than 0 degrees and less than 90 degrees. One end of the first connecting rod 47 is rotatably connected to the first abutting block 412, and the other end is rotatably connected to the first slider 43. Along the positive Y-axis direction, the first connecting rod 47 is tilted toward the base 10. That is, along the direction from the first elastic member 46 to the first slider 43, the first connecting rod 47 is tilted toward the base 10. The extension direction of the second connecting rod 48 intersects the X-direction and is not perpendicular to it. One end of the second connecting rod 48 is connected to the second abutting block 413, and the other end is connected to the second slider 44. Along the negative Y-axis direction, the second connecting rod 48 is tilted toward the base 10. That is, along the direction from the first elastic member 46 to the second slider 44, the second connecting rod 48 is tilted toward the base 10.

[0334] The elastic force of the first elastic member 46 acts on the first slider 43, so that the first slider 43 is subjected to an elastic force Ft. The elastic force Ft acts on the first connecting rod 47, so that the first connecting rod 47 is subjected to an elastic force Ft'. The elastic force Ft' is consistent with the extension direction of the first connecting rod 47. The elastic force Ft' acts on the first bracket 41, so that the first bracket 41 is subjected to a pressure F n2 At the same time, the first bracket 41 abuts the first roller 42, the first roller 42 abuts the base 10, and the base 10 applies a holding force F to the first bracket 41 through the first roller 42. x1 , F x1 The direction is parallel to the X direction, thereby converting the elastic force of the first elastic member 46 along the Y direction into the supporting force F of the first bracket 41 along the X direction. x1 .

[0335] Similarly, the elastic force of the first elastic member 46 along the Y direction can also act on the first bracket 41 through the second slider 44 and the second connecting rod 48, so that the first bracket 41 is subjected to the supporting force F along the X direction. x2 The first bracket 41 is subjected to the resultant force F of the resisting force along the X direction. x =F x1 +F x2 .

[0336] The third abutting surface 5121 and the fourth abutting surface 5131 of the second bracket 51 are both parallel to the X-direction. The third sliding surface 5311 of the third slider 53 and the fourth sliding surface 5411 of the fourth slider 54 are also parallel to the X-direction. The second damping member 50 includes a third connecting rod 57 and a fourth connecting rod 58. The third connecting rod 57 extends in a direction that intersects with the X-direction but is not perpendicular to it. One end of the third connecting rod 57 is rotatably connected to the third abutting block 512, and the other end is rotatably connected to the third slider 53. Along the positive Y-axis, the third connecting rod 57 is tilted toward the base 10. That is, along the direction from the second elastic member 56 to the third slider 53, the third connecting rod 57 is tilted toward the base 10. The fourth connecting rod 58 extends in a direction that intersects with the X-direction but is not perpendicular to it. One end of the fourth connecting rod 58 is connected to the fourth abutting block 513, and the other end is connected to the fourth slider 54. Along the negative Y-axis, the fourth connecting rod 58 is tilted toward the base 10. That is, along the direction from the second elastic member 56 to the fourth slider 54 , the fourth connecting rod 58 is inclined toward the base 10 .

[0337] The elastic force of the second elastic member 56 along the Y direction acts on the second bracket 51 through the third slider 53 and the fourth slider 54 , so that the second bracket 51 is subjected to a resisting force along the X direction.

[0338] During the rotation of the rotating mechanism 100 from the unfolded state to the folded state, the first fixing frame 21 rotates clockwise, driving the first damping swing arm 31 and the first damping member 40 to rotate clockwise, causing the first roller 42 to slide along the first protrusion 15 of the base 10. Simultaneously, the first elastic member 46 is in a compressed state and applies a resisting force to the first bracket 41 via the first slider 43 and the first connecting rod 47. Furthermore, the second slider 44 and the second connecting rod 48 also apply a resisting force to the first bracket 41, causing the first bracket 41 to resist the first roller 42, and the first roller 42 to resist the first protrusion 15. This provides a damping force for the rotation of the first roller 42, and thus for the rotation of the first fixing frame 21.

[0339] Furthermore, during the rotation of the rotation mechanism 100, the first protrusion 15 abuts the first roller 42, which squeezes or releases the first bracket 41, causing the first bracket 41 to move along the width of the first fixed frame 21, that is, in the A1 or A2 direction. As the first bracket 41 moves, it drives the first connecting rod 47 and the second connecting rod 48 to move along the width of the first fixed frame 21. Simultaneously, the first connecting rod 47 applies a force to the first slider 43, and the second connecting rod 48 applies a force to the second slider 44, causing the first slider 43 and the second slider 44 to slide along the Y direction. This in turn squeezes or releases the first elastic member 46, causing the elastic force of the first elastic member 46 to change, thereby changing the force applied to the first roller 42 by the first bracket 41. Simultaneously, during the rotation of the rotation mechanism 100, the direction and magnitude of the force applied by the base 10 on the first roller 42 change, causing the damping force applied to the first roller 42 to change, and thus, the damping force applied to the first fixed frame 21 to change.

[0340] Similarly, when the rotating mechanism 100 rotates from the unfolded state to the folded state, the second fixing frame 22 rotates counterclockwise, driving the second damping swing arm 32 and the second damping member 50 to rotate counterclockwise, causing the second roller 52 to slide along the second protrusion 16 of the base 10. Simultaneously, the second elastic member 56 is in a compressed state and applies a resisting force to the second bracket 51 via the third slider 53 and the third connecting rod 57. Furthermore, the second elastic member 56 applies a resisting force to the second bracket 51 via the fourth slider 54 and the fourth connecting rod 58, causing the second bracket 51 to resist the second roller 52, and causing the second roller 52 to resist the second protrusion 16. This provides a damping force for the rotation of the second roller 52, and thus for the rotation of the second fixing frame 22, and thus for the rotation of the rotating mechanism 100.

[0341] The force analysis of the first slider 43 yields: F t =F n1 sinα.

[0342] The force analysis of the first supporting block 412 yields: F x1 =F n2 cosα.

[0343] Solving the above equation, we get: F x1 =F t cosα / sinα=F t *cotα.

[0344] Wherein, α is the angle between the first link and the A1 direction.

[0345] The force applied to the second slider 44 is similar to that applied to the first slider 43, and the force applied to the second supporting block 413 is similar to that applied to the first supporting block 412. The base 10 applies a supporting force F to the second supporting block 413 via the first roller 42. x2 , holding force F x2 and the holding force F x1 The same size and direction. x1 and the holding force F x2 The resultant force is the force exerted by the first elastic member 46 on the first bracket 41 through the first slider 43 and the second slider 44. That is, the resisting force F on the first bracket 41 is x =F x1 +F x2 .

[0346] When the rotating mechanism 100 rotates from the unfolded state to the first intermediate state, the first bracket 41 moves toward the A2 direction, driving the first connecting rod 47 to move toward the A2 direction. At the same time, the first connecting rod 47 rotates counterclockwise, and the end of the first connecting rod 47 connected to the first slider 43 moves toward the negative direction of the Y axis, and the first elastic member 46 is compressed. At this time, F t increases, α increases, and cotα decreases. And, F t The effect of increasing is greater than the effect of decreasing cotα, F x1 Increase.

[0347] At the same time, when the rotating mechanism 100 rotates from the unfolded state to the first intermediate state, the first bracket 41 also drives the second connecting rod 48 to move toward the A2 direction. At the same time, the second connecting rod 48 rotates clockwise, and the end of the second connecting rod 48 connected to the second slider 44 moves toward the positive direction of the Y axis, thereby further squeezing the first elastic member 46 and resisting the force F. x2 Increase, that is, F x Increase.

[0348] In this embodiment, the force relationship between the first roller 42 and the first protrusion 15 is the same as Figure 19 The same embodiment shown, combined Figure 21 According to the enlarged diagram P1 and equation (7), when the rotating mechanism 100 rotates from the unfolded state to the first intermediate state, F x Gradually increases, the holding force F of the first bracket 41 on the first roller 42 x 'Gradually increase, F a The first damping force gradually increases, that is, the damping force applied to the rotating mechanism 100 gradually increases, and the user's damping feeling gradually increases.

[0349] Similarly, when the rotating mechanism 100 rotates from the deployed state to the first intermediate state, the damping force provided by the second damping member 50 to the second damping swing arm 32 and the second fixing bracket 22 also gradually increases.

[0350] When the rotating mechanism 100 rotates from the first intermediate state to the third intermediate state, the first bracket 41 moves toward the A1 direction, driving the first connecting rod 47 to move toward the A1 direction. At the same time, the first connecting rod 47 rotates clockwise, and the end of the first connecting rod 47 connected to the first slider 43 moves toward the positive direction of the Y axis, driving the first slider 43 to move toward the positive direction of the Y axis, thereby releasing the first elastic member 46. At this time, F t decreases, α decreases, and cotα increases. And, F t The effect of the decrease is greater than the effect of the increase of cotα, F x1 At the same time, the holding force F x2 Decrease, that is, F x Decrease.

[0351] Combine Figures 24 to 30 As can be seen from the description of the embodiment shown, during the process of the rotating mechanism 100 switching from the first intermediate state to the second intermediate state, F x The damping force applied to the rotating mechanism 100 during rotation gradually decreases from the maximum value until it reaches 0. During the process of the rotating mechanism 100 switching from the second intermediate state to the third intermediate state, the damping force applied to the rotating mechanism 100 is negative, and the value of the damping force gradually increases from 0 and then gradually decreases to 0. In other words, during the process of the rotating mechanism 100 switching from the second intermediate state to the third intermediate state, the damping assembly 1 is able to promote the rotation of the rotating mechanism 100, and the thrust provided by the damping assembly 1 for the rotation of the rotating mechanism 100 first gradually increases and then gradually decreases until it reaches 0.

[0352] Combine Figure 38 , Figure 38 for Figure 37 The structure diagram of the rotating mechanism 100 shown is in a folded state.

[0353] When the rotating mechanism 100 switches from the third intermediate state to the folded state, the first roller 42 is spaced apart from the base 10 , and the damping force provided by the first damping member 40 to the rotating mechanism 100 is zero.

[0354] When the rotating mechanism 100 rotates from the folded state to the unfolded state, the damping force acting on the rotating mechanism 100 initially reaches zero, then gradually increases and decreases until it reaches zero. The direction of the damping force then changes, gradually increasing. This damping force now facilitates the rotation of the rotating mechanism 100 to the unfolded state. The specific damping force change process and principle can be found in the above description and will not be elaborated here.

[0355] In this embodiment, a first connecting rod 47 is provided between the first slider 43 and the first bracket 41, and the angle between the directions of the first connecting rod 47 in the X direction is greater than 0 degrees and less than 90 degrees. A second connecting rod 48 is provided between the second slider 44 and the first bracket 41, and the angle between the directions of the second connecting rod 48 in the X direction is greater than 0 degrees and less than 90 degrees. Therefore, the elastic force of the first elastic member 46 along the Y direction can be converted into a supporting force of the first bracket 41 along the X direction, thereby reducing the size occupied by the first elastic member 46 in the X direction. That is, the size occupied by the first damping member 40 in the X direction can be reduced, thereby reducing the size occupied by the rotating mechanism 100 in the X direction, which is conducive to narrowing the rotating mechanism 100 and can make more design space for other electronic components in the electronic device 1000.

[0356] Similarly, in this embodiment, by providing a third connecting rod 57 between the third slider 53 and the second bracket 51, and providing a fourth connecting rod 58 between the fourth slider 54 and the second bracket 51, the elastic force of the second elastic member 56 along the Y direction can be converted into a resisting force of the second bracket 51 along the X direction, thereby reducing the size occupied by the second damping member 50 in the X direction, thereby further reducing the size occupied by the rotating mechanism 100 in the X direction, which is conducive to narrowing the rotating mechanism 100.

[0357] In this embodiment, by connecting a first connecting rod 47 between the first slider 43 and the first bracket 41, the elastic force of the first elastic member 46 along the Y direction can be converted into a resisting force of the first bracket 41 along the X direction. There is no need to provide inclined surfaces on the first slider 43 and the first bracket 41, which can simplify the structure of the first bracket 41 and the first slider 43, thereby reducing costs. Furthermore, in this embodiment, the magnitude of the resisting force applied to the first bracket 41 can be adjusted by adjusting the inclination angle of the first connecting rod 47, which helps simplify the manufacturing process and reduce costs. Furthermore, the rotation mechanism 100 provided in this embodiment can also prevent the first sliding surface 4311 and the first resisting surface 4121 from being worn when the first slider 43 and the first bracket 41 slide relative to each other, thereby preventing the damping force of the rotation mechanism 100 from being unstable. This can thereby improve the stability of the damping force provided by the rotation mechanism 100.

[0358] Similarly, in this embodiment, by connecting a second connecting rod 48 between the second slider 44 and the first bracket 41, the elastic force of the first elastic member 46 along the Y direction is converted into a resisting force of the first bracket 41 along the X direction. This eliminates the need for an inclined surface on the second slider 44, simplifies the structure of the second slider 44, and helps reduce costs. Furthermore, in this embodiment, by connecting a third connecting rod 57 between the third slider 53 and the second bracket 51, and providing a fourth connecting rod 58 between the fourth slider 54 and the second bracket 51, the elastic force of the second elastic member 56 along the Y direction is converted into a resisting force of the second bracket 51 along the X direction. This eliminates the need for inclined surfaces on the second bracket 51, the third slider 53, and the fourth slider 54. This simplifies the structure of the second bracket 51, the third slider 53, and the fourth slider 54, and further helps reduce costs.

[0359] The above are only some of the embodiments and implementations of this application. The scope of protection of this application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A rotating mechanism, characterized in that: include: A base, a first damping swing arm, a first bracket, a first slider, a first roller and a first elastic member; The first damping swing arm is rotatably connected to the base; The first bracket is mounted on the first damping swing arm and can slide relative to the first damping swing arm in a first direction; the first roller is mounted on the first damping swing arm and is rotatably connected to the first bracket, and the first roller faces the base; the axial direction of the first roller is parallel to the second direction, and when the first damping swing arm rotates relative to the base, the first roller can be driven to slide along the surface of the base; The first elastic member and the first slider are both mounted on the first damping swing arm; the first slider is connected between the first bracket and the first elastic member, and the first slider can slide relative to the first damping swing arm along the second direction; The elastic deformation direction of the first elastic member is parallel to the second direction. The first elastic member is elastically compressed and abuts the first slider. The first slider abuts the first bracket and enables the first bracket to move along the first direction to abut the first roller, thereby causing the first roller to abut the base. The second direction is parallel to the length direction of the base, and the first direction is consistent with the width direction of the first damping swing arm and is perpendicular to the second direction.

2. The rotation mechanism according to claim 1, characterized in that: The first slider includes a first sliding surface, and the first bracket includes a first supporting surface. The first sliding surface and the first supporting surface are parallel, and both the first sliding surface and the first supporting surface intersect with the first direction and the second direction. Along the direction from the first slider to the first elastic member, the first sliding surface and the first supporting surface are both inclined toward the base, and the first sliding surface supports the first supporting surface.

3. The rotation mechanism according to claim 2, characterized in that: An included angle between the first sliding surface and the second direction is greater than or equal to 30° and less than 90°.

4. The rotation mechanism according to claim 2, characterized in that: The first bracket further includes a second abutting surface, the second abutting surface is opposite to the first abutting surface and is spaced apart from the first abutting surface, and the first sliding block and the first elastic member are arranged between the first abutting surface and the second abutting surface; The rotating mechanism also includes a second slider, which includes a second sliding surface. The second slider is connected to the end of the first elastic member facing away from the first slider; the second sliding surface is parallel to the second supporting surface, and along the direction from the second slider to the first elastic member, the second sliding surface is inclined toward the base, and the second sliding surface and the second supporting surface are in contact with each other.

5. The rotating mechanism according to claim 1, wherein: The rotation mechanism also includes a first connecting rod, one end of which is rotationally connected to the first slider, and the other end is rotationally connected to the first bracket. The extension direction of the first connecting rod intersects with both the first direction and the second direction, and along the direction from the first elastic member to the first slider, the first connecting rod is inclined toward the base.

6. The rotating mechanism according to claim 5, characterized in that: When the first bracket moves along the first direction toward the base, the end of the first connecting rod connected to the first slider is driven to rotate toward a direction away from the first slider, thereby driving the first slider to slide toward a direction away from the first elastic member and releasing the first elastic member; When the first bracket moves along the first direction away from the base, it drives the end of the first connecting rod connected to the first slider to rotate toward the first slider, thereby driving the first slider to slide toward the first elastic member and squeeze the first elastic member.

7. The rotating mechanism according to claim 5, characterized in that: The rotation mechanism also includes a second slider and a second connecting rod, the second slider is connected to the end of the first elastic member facing away from the first slider, one end of the second connecting rod is rotationally connected to the second slider, and the other end is rotationally connected to the first bracket, and the extension direction of the second connecting rod intersects with both the first direction and the second direction, and the second connecting rod is inclined toward the base along the direction from the first elastic member to the first slider.

8. The rotating mechanism according to any one of claims 1 to 7, characterized in that: A first protrusion is provided on the side surface of the base, and the surface of the first protrusion includes a first abutting surface and a second abutting surface; Along the direction from the bottom surface of the base to the top surface of the base, the first abutting surface and the second abutting surface are connected in sequence and are both inclined away from the base, and the inclination angle of the first abutting surface is greater than the inclination angle of the second abutting surface.

9. The rotation mechanism according to claim 8, characterized in that: The rotating mechanism includes an expanded state and a first intermediate state. When the rotating mechanism is in the expanded state, the first roller abuts against the first abutting surface. When the rotating mechanism switches from the expanded state to the first intermediate state, the first roller slides along the first abutting surface toward the second abutting surface, and the first bracket moves away from the base, thereby driving the first slider to squeeze the first elastic member; When the rotating mechanism is in the first intermediate state, the first roller abuts against the connection between the first abutting surface and the second abutting surface; Wherein, the deployment angle of the rotating mechanism when it is in the first intermediate state is smaller than the deployment angle of the rotating mechanism when it is in the deployed state.

10. The rotating mechanism according to claim 9, characterized in that: The surface of the first protrusion also includes a third abutting surface, which is connected to an end of the second abutting surface away from the first abutting surface, and is inclined toward the base along the direction from the bottom surface of the base to the top surface of the base.

11. The rotating mechanism according to claim 10, characterized in that: The rotation mechanism further includes a second intermediate state. When the rotation mechanism switches from the first intermediate state to the second intermediate state, the first roller slides along the second abutting surface toward the third abutting surface, and the first bracket moves toward the base to drive the first slider to release the first elastic member. When the rotating mechanism is in the second intermediate state, the first roller abuts against the connection between the second abutting surface and the third abutting surface; Wherein, the deployment angle of the rotating mechanism when it is in the second intermediate state is smaller than the deployment angle of the rotating mechanism when it is in the first intermediate state.

12. The rotating mechanism according to claim 11, characterized in that: The rotation mechanism further includes a third intermediate state. When the rotation mechanism switches from the second intermediate state to the third intermediate state, the first roller slides along the third abutting surface, and the first bracket moves toward the base, thereby driving the first slider to release the first elastic member. When the rotating mechanism is in the third intermediate state, the first roller abuts against the third abutting surface; Wherein, the deployment angle of the rotating mechanism when it is in the third intermediate state is smaller than the deployment angle of the rotating mechanism when it is in the second intermediate state.

13. The rotating mechanism according to claim 12, characterized in that: The rotating mechanism further includes a folded state. When the rotating mechanism is in the folded state, the first roller is spaced apart from the base.

14. The rotating mechanism according to claim 1, wherein: The rotating mechanism includes a first fixing frame, the first fixing frame and the first damping swing arm are arranged on the same side of the base in the width direction, and the first fixing frame is slidably connected to the first damping swing arm.

15. The rotating mechanism according to claim 1, wherein: The first elastic member is flat, and the thickness of the first elastic member is smaller than the width and length of the first elastic member.

16. The rotating mechanism according to claim 1, wherein: The rotating mechanism further includes a second damping swing arm, a second bracket, a third slider, a second roller and a second elastic member; The second damping swing arm is rotatably connected to the base and is arranged opposite to the first damping swing arm along the width direction of the base; The second bracket is mounted on the second damping swing arm and is slidable along the width direction of the second damping swing arm; the second roller is mounted on the second damping swing arm and is rotatably connected to the second bracket, and the second roller faces the base; the axial direction of the second roller is parallel to the second direction, and when the second damping swing arm rotates relative to the base, the second roller can be driven to slide along the surface of the base; The second elastic member and the third slider are both mounted on the second damping swing arm; the third slider is connected between the second bracket and the second elastic member, and the third slider can slide relative to the second damping swing arm along the second direction; The elastic deformation direction of the second elastic member is parallel to the second direction. The second elastic member is elastically compressed and abuts the third slider. The third slider abuts the second bracket and enables the second bracket to slide along the width direction of the second damping swing arm to abut the second roller, thereby causing the second roller to abut the base.

17. The rotating mechanism according to claim 16, characterized in that: The base is provided with a first rotation groove and a second rotation groove, wherein a projection of the first rotation groove along the length direction of the base at least partially overlaps with the second rotation groove; The first damping swing arm is installed in the first rotation groove and can rotate along the first rotation groove; the second damping swing arm is installed in the second rotation groove and can rotate along the second rotation groove.

18. A foldable electronic device, characterized in that: It includes a first shell, a second shell, a display screen and a rotating mechanism as described in any one of claims 1 to 17, wherein the rotating mechanism is connected between the first shell and the second shell, and the display screen is installed on the first shell, the second shell and the rotating mechanism. When the rotating mechanism rotates, the first shell and the second shell rotate relative to each other, thereby driving the display screen to bend or unfold.

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