Rotating shaft mechanism and foldable electronic device

Abstract

The application provides a rotating shaft mechanism and a foldable electronic device. The rotating shaft mechanism comprises a base, a first swing arm, a second swing arm and a first connecting piece. The first connecting piece is located on one side of the base in the width direction, and one end of the first swing arm is rotationally connected with the base. The other end of the first swing arm is rotationally and slidingly connected with the first connecting piece. The second swing arm is located on one side of the first swing arm in the length direction of the base. One end of the second swing arm is rotationally connected with the base, the other end of the second swing arm is slidingly connected with the first connecting piece, and the second swing arm is rotationally and slidingly connected with the first swing arm. When the rotating shaft mechanism is rotated from the unfolded state to the folded state, the first swing arm moves relative to the first connecting piece in the opposite direction of the rotation direction of the first connecting piece. The rotating shaft mechanism provided by the application can solve the technical problem that the rotating shaft mechanism in the prior art is easily pressed against the display screen when in the folded state, thereby causing damage to the display screen.

Description

Technical Field

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

[0002] With the development of technology, the form factor (ID) of electronic devices (such as mobile phones and tablets) is trending from candybar phones to foldable phones. Foldable phones, when open, feature large screens, fully satisfying consumers' visual experience, while their compact size makes them easy to carry when closed. The hinge mechanism in most foldable phones achieves virtual axis rotation by sliding a swing arm along an arc-shaped groove. However, in existing technologies, the hinge mechanism can easily compress the display screen when rotating to the folded state, potentially damaging the screen and affecting its display quality and lifespan. Summary of the Invention

[0003] This application provides a hinge mechanism and a foldable electronic device, which can solve the technical problem in the prior art that when the hinge mechanism is in a folded state, it is easy to squeeze the display screen, thereby causing damage to the display screen.

[0004] In a first aspect, this application provides a hinge mechanism. The hinge mechanism is applied to a foldable electronic device. The foldable electronic device includes a first housing, a second housing, and a display screen. The hinge mechanism is installed between the first housing and the second housing and is fixedly connected to both housings. The display screen is mounted on the first housing, the second housing, and the hinge mechanism. When the hinge mechanism rotates, the first housing and the second housing rotate relative to each other, thereby causing the display screen to bend or unfold.

[0005] The rotating shaft mechanism includes a base, a first rotating assembly, and a second rotating assembly. The first rotating assembly and the second rotating assembly are located on opposite sides of the base in the width direction and are rotatably connected to the base.

[0006] The first rotating assembly includes a first connector, a first swing arm, and a second swing arm. The first connector, the first swing arm, and the second swing arm are located on one side of the base in the width direction. One end of the first swing arm is rotatably connected to the base, and the other end of the first swing arm is rotatably and slidably connected to the first connector. The second swing arm is located on one side of the first swing arm and is arranged along the length direction of the base, along with the first swing arm. One end of the second swing arm is rotatably connected to the base, and the other end of the second swing arm is slidably connected to the first connector; the second swing arm and the first swing arm are rotatably and slidably connected.

[0007] The first connector, the first swing arm, and the second swing arm are all rotatable relative to the base, allowing the rotating shaft mechanism to have an unfolded state and a folded state. When the rotating shaft mechanism is in the unfolded state, the first rotating component and the second rotating component are located on opposite sides of the base in the width direction and are unfolded relative to each other. Specifically, the first connector, the first swing arm, and the second swing arm are all unfolded relative to the base. When the rotating shaft mechanism is in the folded state, the first rotating component and the second rotating component are arranged opposite each other along the width direction of the base and are folded relative to each other. Specifically, the first connector, the first swing arm, and the second swing arm are all folded relative to the base.

[0008] When the rotating shaft mechanism rotates from the unfolded state to the folded state, the first swing arm moves in the opposite direction to the rotation direction of the first connector relative to the first connector.

[0009] In this embodiment, by rotating and sliding the first swing arm to the first connecting member and rotating and sliding the second swing arm, when the rotating shaft mechanism rotates from the unfolded state to the folded state, the first swing arm rotates relative to the base while also rotating and sliding relative to the first connecting member. Furthermore, the first swing arm moves relative to the first connecting member in the opposite direction to the rotation direction of the first connecting member. This reduces the rotation angle of the first swing arm relative to the base when the rotating shaft mechanism rotates from the unfolded state to the folded state. Consequently, it avoids the first swing arm from squeezing the display screen when the rotating shaft mechanism is in the folded state, thus improving the display effect and extending the service life of the display screen.

[0010] The first swing arm includes a first rotating body, a first oscillating body, and a first shaft. The first rotating body, the first oscillating body, and the first shaft are connected in sequence. The first rotating body is used for rotatable connection with the base, and the first shaft is used for rotatable and slidable connection with the first connecting member.

[0011] In one possible implementation, the base is provided with a first rotating groove, the cross-section of which is arc-shaped. The bottom surface of the first rotating body is also arc-shaped. The first rotating body is installed within the first rotating groove, with its bottom surface facing the bottom wall of the groove. Furthermore, the first rotating body is capable of sliding along the first rotating groove. It can be understood that the sliding of the first swing arm along the first rotating groove can also be understood as the first swing arm rotating relative to the base about the axis of the first rotating groove.

[0012] In this embodiment, the first swing arm can be rotated to connect with the base by providing a first rotating groove on the base and allowing the first rotating body to slide along the first rotating groove.

[0013] In this embodiment, by rotating and slidingly connecting the first swing arm to the first connecting member and rotating and slidingly connecting it to the second swing arm, the rotation angle of the first swing arm relative to the base during the rotation of the pivot mechanism from the unfolded state to the folded state is reduced, thereby increasing the overlap between the first swing arm and the base when the pivot mechanism is in the folded state. When the overlap between the first swing arm and the base is increased when the pivot mechanism is in the folded state, the first swing arm is less likely to detach from the base when the pivot mechanism is dropped or impacted. Furthermore, it enhances the support provided by the first swing arm to the pivot mechanism, reducing the deformation and movement of the base towards the pivot mechanism when it is dropped or impacted, thus improving the pivot mechanism's drop resistance. Simultaneously, the increased overlap between the first swing arm and the base when the pivot mechanism is in the folded state also improves the stability of the pivot mechanism during opening and closing, reducing or even preventing bending and jamming during opening and closing, improving the smoothness of the opening and closing process, and enhancing the user experience.

[0014] In one possible implementation, the first swing arm further includes a first slide rail disposed on the side of the first swing arm facing the second swing arm. Specifically, the first slide rail is connected to the side of the first swing body facing the second swing arm. The second swing arm includes a first sliding post and a second sliding post, which are spaced apart. The first and second sliding posts clamp the first slide rail, and are capable of sliding and rotating relative to the first swing arm along the first slide rail.

[0015] In this embodiment, by providing a first slide rail to the first swing arm and a first sliding post and a second sliding post to the second swing arm, the first and second swing arms can be rotated and slidably connected, thereby improving the rotational stability of the first and second swing arms, and consequently improving the rotational stability of the shaft mechanism. Furthermore, in this embodiment, by clamping the first slide rail with the first and second sliding posts, the stability of the first and second sliding posts sliding along the first slide rail can be improved, thus preventing the first and second sliding posts from detaching from the first slide rail and from deviating from their predetermined motion trajectory, thereby improving the rotational stability of the shaft mechanism.

[0016] In one possible implementation, the first slide rail includes a first end and a second end. The first end and the second end are disposed opposite each other along the extending direction of the first slide rail. The first end and the second end are offset along the thickness direction and the length direction of the first swing arm, and the second end is located on the side of the first end closer to the base.

[0017] When the rotating shaft mechanism rotates from the unfolded state to the folded state, the first sliding column and the second sliding column slide along the first slide rail from the first end toward the second end. It can be understood that when the rotating shaft mechanism rotates from the unfolded state to the folded state, the first swing arm rotates relative to the second swing arm toward the inside of the rotating shaft mechanism.

[0018] In one possible implementation, the first slide rail has an arc-shaped cross-section. The first slide rail comprises a first segment and a second segment connected sequentially. The first end is located at the end of the first segment away from the second segment, and the second end is located at the end of the second segment away from the first segment. The radius of curvature of the first segment is greater than the radius of curvature of the second segment. That is, the degree of curvature of the first segment is less than the degree of curvature of the second segment. When the rotating shaft mechanism is in the unfolded state, the first slide column and the second slide column are located in the first segment. When the rotating shaft mechanism is in the folded state, the first slide column and the second slide column are located in the second segment.

[0019] In this embodiment, by setting the radius of curvature of the first segment of the first slide rail to be smaller than that of the second segment, the sliding speed of the first and second slide columns along the first segment is less than that along the second segment. This reduces the initial rotation speed of the pivot mechanism when it rotates from the unfolded state to the folded state, thereby avoiding pulling on the display screen, preventing damage or arching of the display screen, and also preventing jamming of the pivot mechanism during rotation, thus improving the smoothness of the pivot mechanism during rotation.

[0020] In one possible implementation, the second segment has a first stop surface facing the base. The second slide post is located on the side of the first slide post near the base, and the second slide post has a second stop surface on the side of the second slide post facing away from the base. When the rotating shaft mechanism is in the folded state, the second stop surface and the first stop surface are opposite to each other and spaced apart along the thickness direction of the base.

[0021] In this embodiment, the first stop surface acts as a stop for the second stop surface. That is, the first slide rail acts as a stop for the second slide column. In other words, the first swing arm supports and stops the second swing arm. This prevents the second swing arm from sliding away from the base along the first slide groove when the pivot mechanism is impacted or dropped, thus avoiding pressure on the display screen. This improves the drop resistance of the foldable electronic device and extends the lifespan of the display screen.

[0022] In one possible implementation, when the rotating shaft mechanism is in the folded state, the distance between the second stop surface and the first stop surface is 0.1mm to 0.5mm. That is, there is a small gap between the second slide column and the first slide rail, so that when the rotating shaft mechanism rotates to the folding process, the second slide column can smoothly slide from the second section to the first section, thereby improving the smoothness of the rotating shaft mechanism during rotation.

[0023] In one possible implementation, the second stop surface is a plane, and the second slide column further includes a first arc surface connected to the second stop surface. When the first swing arm and the second swing arm rotate relative to the base, the first arc surface slides along the first slide rail.

[0024] When the pivot mechanism is in the folded state and falls from one side of the base or is impacted, the second swing arm slides away from the base, the second stop surface moves toward the first stop surface and forms a surface-to-surface contact with the first stop surface, thereby improving the stopping effect of the first swing arm on the second swing arm and further improving the drop resistance of the foldable electronic device.

[0025] In one possible implementation, the first swing arm is provided with a first sliding groove. The first sliding groove is a strip-shaped groove. The second swing arm includes a first sliding shaft, which is disposed within the first sliding groove and is capable of sliding and rotating relative to the first swing arm along the first sliding groove.

[0026] In this embodiment, by providing a first sliding groove in the first swing arm and a first sliding shaft in the second swing arm, the first swing arm and the second swing arm can be rotated and slidably connected. The first sliding shaft can be confined within the first sliding groove, thereby improving the stability of the first sliding shaft sliding along the first sliding groove, thereby improving the rotational stability of the first swing arm and the second swing arm, and further improving the rotational stability of the rotating shaft mechanism.

[0027] In one possible implementation, the first connector is provided with a second groove. The first swing arm includes a first shaft located at one end of the first swing arm away from the base. The first shaft is disposed within the second groove and is capable of sliding and rotating relative to the first connector along the second groove.

[0028] In this embodiment, by confining the first shaft within the second slide groove, the connection stability between the first shaft and the first connector can be improved, thereby improving the rotational stability of the rotating shaft mechanism.

[0029] In one possible implementation, the second groove includes a first position and a second position. The first position and the second position are located at opposite ends of the extension direction of the second groove and are spaced apart along the thickness direction of the first connector.

[0030] When the rotating shaft mechanism is in the unfolded state, the first connecting member and the first swing arm are unfolded relative to the base, and the first shaft is located at the first position. When the rotating shaft mechanism is in the folded state, the first connecting member and the first swing arm are folded relative to the base, and the first shaft is located at the second position, which is located on the side away from the center of the base from the first position.

[0031] In this embodiment, by placing the first shaft in the second slide groove, the first shaft can slide from the first position to the second position along the second slide groove during the rotation of the rotating shaft mechanism from the unfolded state to the folded state. That is, the first shaft can move relative to the first connector toward the outside of the rotating shaft mechanism, thereby reducing the rotation angle of the first swing arm relative to the base during the rotation of the rotating shaft mechanism from the unfolded state to the folded state. This can reduce or even avoid the squeezing of the display screen by the first swing arm. At the same time, it can also increase the overlap between the first swing arm and the base when the rotating shaft mechanism is in the folded state, thereby improving the connection stability between the first swing arm and the base.

[0032] In one possible implementation, the second groove is arc-shaped, and the center of the second groove is located on the side of the second groove facing away from the base. In other implementations, the second groove is arc-shaped, and the center of the second groove is located on the side of the second groove facing the base. Alternatively, the second groove may also be straight.

[0033] In one possible implementation, when the hinge mechanism is in the folded state, the tangent of the second slide at the second position is parallel to the width direction of the base. When the hinge mechanism is in the folded state, the force exerted by the inner wall of the second slide on the first shaft is parallel or approximately parallel to the thickness direction of the base, thereby preventing the first shaft from sliding towards the first position when the hinge mechanism is dropped or impacted, thus improving the drop resistance of the hinge mechanism and the foldable electronic device.

[0034] In one possible implementation, there are multiple second slides, first swing arms, and second swing arms, with each first swing arm corresponding to a second slide. The first shaft of each first swing arm is installed within its corresponding second slide. Each second swing arm corresponds to a first swing arm, and each second swing arm is rotatably and slidably connected to its corresponding first swing arm. The two second slides are at least partially offset along the thickness direction of the first connecting member.

[0035] The rotating shaft mechanism provided in this embodiment can adjust the position or shape of the second slide groove and the first shaft as needed, and adjust the position or shape of the corresponding first slide rail, first slide column and second slide column. In this way, while ensuring the smooth rotation of the rotating shaft mechanism, the required clearance space is formed in the first connecting member to adapt to different space requirements, thereby making the rotating shaft mechanism more flexible in design and able to adapt to different application scenarios.

[0036] In one possible implementation, when the pivot mechanism rotates from the unfolded state to the folded state, the rotation angle of the first swing arm relative to the base is 90° to 100°. The pivot mechanism provided in this embodiment can reduce the rotation angle of the first swing arm relative to the base when the pivot mechanism rotates from the unfolded state to the folded state, thereby reducing or even avoiding pressure from the first swing arm on the display screen. Simultaneously, it can increase the overlap between the first swing arm and the base when the pivot mechanism is in the folded state, improving the connection stability between the first swing arm and the base.

[0037] The second rotating assembly includes a second connector, a third swing arm, and a fourth swing arm. The second connector and the first connector are located on opposite sides of the base in the width direction. One end of the third swing arm is rotatably connected to the base, and the other end of the third swing arm is rotatably and slidably connected to the second connector. Along the length direction of the base, the fourth swing arm is located on one side of the third swing arm. One end of the fourth swing arm is rotatably connected to the base, and the other end of the fourth swing arm is slidably connected to the second connector, and the fourth swing arm is rotatably and slidably connected to the third swing arm.

[0038] When the rotating shaft mechanism is in the unfolded state, the second connecting member, the third swing arm, and the fourth swing arm are all unfolded relative to the base. When the rotating shaft mechanism is in the folded state, the second connecting member, the third swing arm, and the fourth swing arm are all folded relative to the base. When the rotating shaft mechanism rotates from the unfolded state to the folded state, the third swing arm moves relative to the second connecting member in the opposite direction to the rotation direction of the second connecting member.

[0039] In this embodiment, by rotating and sliding the third swing arm to the second connector and rotating and sliding the fourth swing arm, when the rotating shaft mechanism rotates from the unfolded state to the folded state, the third swing arm rotates relative to the base while also rotating and sliding relative to the second connector. Furthermore, the third swing arm moves relative to the second connector in the opposite direction to the rotation direction of the second connector. This reduces the rotation angle of the third swing arm relative to the base when the rotating shaft mechanism rotates from the unfolded state to the folded state. Consequently, it avoids the third swing arm from squeezing the display screen when the rotating shaft mechanism is in the folded state, thus improving the display effect and extending the service life of the display screen.

[0040] The third swing arm has a structure that is the same as or similar to that of the first swing arm. The third swing arm includes a second rotating body, a second oscillating body, and a second shaft. The second rotating body, the second oscillating body, and the second shaft are connected sequentially. The second rotating body is rotatably connected to the base, and the second shaft is rotatably and slidably connected to the second connecting member.

[0041] In one possible implementation, the base is provided with a second rotating groove, the cross-section of which is arc-shaped. The second rotating groove is spaced apart from the first rotating groove. For example, the second rotating groove and the first rotating groove are arranged opposite each other along the width direction of the base.

[0042] The bottom surface of the second rotating body is curved. The second rotating body is installed within the second rotating groove, with its bottom surface facing the bottom wall of the groove. Furthermore, the second rotating body can slide along the second rotating groove. It can be understood that the sliding of the third swing arm along the second rotating groove can also be understood as the third swing arm rotating relative to the base around the axis of the second rotating groove.

[0043] In this embodiment, the rotational connection between the third swing arm and the base is achieved by providing a second rotating groove on the base and allowing the second rotating body to slide along the second rotating groove. In this embodiment, by rotating and slidingly connecting the third swing arm to the second connecting member and to the fourth swing arm, the rotation angle of the third swing arm relative to the base during the rotation of the pivot mechanism from the unfolded state to the folded state is reduced, thereby increasing the overlap between the third swing arm and the base when the pivot mechanism is in the folded state. When the overlap between the third swing arm and the base is increased when the pivot mechanism is in the folded state, the third swing arm is less likely to detach from the base when the pivot mechanism is dropped or impacted. Furthermore, it improves the support provided by the third swing arm to the pivot mechanism, reducing the deformation and movement of the base towards the pivot mechanism when it is dropped or impacted, thus improving the pivot mechanism's drop resistance. Meanwhile, when the pivot mechanism is in the folded state, the increased overlap between the third swing arm and the base can improve the stability of the pivot mechanism during the opening and closing process, and reduce or even avoid bending and jamming of the pivot mechanism during the opening and closing process, thereby improving the smoothness of the opening and closing process and enhancing the user experience.

[0044] In one possible implementation, the third swing arm further includes a second slide rail disposed on the side of the third swing arm facing the fourth swing arm. Specifically, the second slide rail is connected to the side of the second swing body facing the fourth swing arm. The fourth swing arm includes a third slide post and a fourth slide post, which are spaced apart. The third slide post and the fourth slide post clamp the second slide rail, and the third slide post and the fourth slide post are capable of sliding and rotating relative to the third swing arm along the second slide rail.

[0045] In this embodiment, by providing a second slide rail in the third swing arm and a third and fourth sliding pin in the fourth swing arm, the third and fourth swing arms can be rotated and slidably connected, thereby improving the rotational stability of the third and fourth swing arms, and further enhancing the rotational stability of the shaft mechanism. Furthermore, in this embodiment, by clamping the second slide rail with the third and fourth sliding pins, the stability of the third and fourth sliding pins sliding along the second slide rail can be improved, thus preventing the third and fourth sliding pins from detaching from the second slide rail and from deviating from their predetermined motion trajectory, thereby further enhancing the rotational stability of the shaft mechanism.

[0046] In one possible implementation, the second slide rail includes a third end and a fourth end. The third end and the fourth end are disposed opposite each other along the extension direction of the second slide rail. The third end and the fourth end are offset along the thickness direction and the length direction of the third swing arm, and the fourth end is located on the side of the third end closer to the base.

[0047] When the rotating shaft mechanism rotates from the unfolded state to the folded state, the third and fourth sliding columns slide along the second slide rail from the third end toward the fourth end. It can be understood that when the rotating shaft mechanism rotates from the unfolded state to the folded state, the third swing arm rotates relative to the fourth swing arm toward the inside of the rotating shaft mechanism.

[0048] In one possible implementation, the second slide rail has an arc-shaped cross-section. The second slide rail includes a third segment and a fourth segment connected sequentially. The third end is located at the end of the third segment away from the fourth segment, and the fourth end is located at the end of the fourth segment away from the third segment. The radius of curvature of the third segment is greater than the radius of curvature of the fourth segment. That is, the degree of curvature of the third segment is less than that of the fourth segment. When the rotating shaft mechanism is in the unfolded state, the third and fourth slide columns are located in the third segment. When the rotating shaft mechanism is in the folded state, the third and fourth slide columns are located in the fourth segment.

[0049] In this embodiment, by setting the radius of curvature of the third segment of the second slide rail to be smaller than that of the fourth segment, the sliding speed of the third and fourth slide columns along the third segment is less than that along the fourth segment. This reduces the initial rotation speed of the pivot mechanism when it rotates from the unfolded state to the folded state, thereby avoiding pulling on the display screen, preventing damage or arching of the display screen, and also preventing jamming of the pivot mechanism during rotation, thus improving the smoothness of the pivot mechanism during rotation.

[0050] In one possible implementation, the fourth segment has a third stop surface facing the base. The fourth slide post is located on the side of the third slide post closest to the base, and the fourth slide post has a fourth stop surface on the side of the fourth slide post facing away from the base. When the rotating shaft mechanism is in the folded state, the fourth stop surface and the third stop surface are opposite to each other and spaced apart along the thickness direction of the base.

[0051] In this embodiment, the third stop surface acts as a stop for the fourth stop surface. That is, the second slide rail acts as a stop for the fourth slide column. In other words, the third swing arm supports and stops the fourth swing arm. This prevents the fourth swing arm from sliding away from the base along the second slide groove when the pivot mechanism is impacted or dropped, thus avoiding pressure on the display screen. This improves the drop resistance of the foldable electronic device and extends the lifespan of the display screen.

[0052] In one possible implementation, when the rotating shaft mechanism is in the folded state, the distance between the fourth stop surface and the third stop surface is 0.1mm to 0.5mm. That is, there is a small gap between the fourth slide column and the second slide rail, so that when the rotating shaft mechanism rotates to the folding process, the fourth slide column can smoothly slide from the fourth segment to the third segment, thereby improving the smoothness of the rotating shaft mechanism during rotation.

[0053] In one possible implementation, the fourth stop surface is a plane, and the fourth sliding column further includes a second arc surface connected to the fourth stop surface. When the third and fourth swing arms rotate relative to the base, the second arc surface slides along the second slide rail.

[0054] When the pivot mechanism is in the folded state and falls from the base or is impacted, the fourth swing arm slides away from the base, the fourth stop surface moves toward the third stop surface and forms a surface-to-surface contact with the third stop surface, thereby improving the stopping effect of the third swing arm on the fourth swing arm and further improving the drop resistance of the foldable electronic device.

[0055] In one possible implementation, the third swing arm includes a third sliding groove, which is a strip-shaped groove. The fourth swing arm includes a second sliding shaft disposed within the third sliding groove, and the second sliding shaft is capable of sliding and rotating relative to the third swing arm along the third sliding groove.

[0056] In this embodiment, by setting a third sliding groove in the third swing arm and a second sliding shaft in the fourth swing arm, the third swing arm and the fourth swing arm can be rotated and slidably connected. The second sliding shaft can be confined within the third sliding groove, thereby improving the stability of the second sliding shaft sliding along the third sliding groove, thereby improving the rotational stability of the third and fourth swing arms, and further improving the rotational stability of the rotating shaft mechanism.

[0057] In one possible implementation, the second connector is provided with a fourth sliding groove. The third swing arm includes a second shaft, the first shaft is located at the end of the third swing arm away from the base, and the second shaft is installed in the fourth sliding groove and can slide and rotate relative to the second connector along the fourth sliding groove. In this embodiment, by confining the second shaft within the fourth sliding groove, the connection stability between the second shaft and the second connector can be improved, thereby improving the rotational stability of the rotating shaft mechanism.

[0058] In one possible implementation, the fourth groove includes a third position and a fourth position. The third position and the fourth position are located at opposite ends of the extension direction of the fourth groove and are spaced apart along the thickness direction of the second connector.

[0059] When the rotating shaft mechanism is in the unfolded state, the second connecting member and the third swing arm are unfolded relative to the base, and the first shaft is located at the third position. When the rotating shaft mechanism is in the folded state, the second connecting member and the third swing arm are folded relative to the base, and the first shaft is located at the fourth position, which is located on the side away from the center of the base from the third position.

[0060] In this embodiment, by placing the first shaft in the fourth slide groove, the first shaft can slide from the third position to the fourth position along the fourth slide groove during the rotation of the rotating shaft mechanism from the unfolded state to the folded state. That is, the second shaft can move relative to the second connector toward the outside of the rotating shaft mechanism, thereby reducing the rotation angle of the third swing arm relative to the base during the rotation of the rotating shaft mechanism from the unfolded state to the folded state. This can reduce or even avoid the pressure of the third swing arm on the display screen. At the same time, it can also increase the overlap between the third swing arm and the base when the rotating shaft mechanism is in the folded state, thereby improving the connection stability between the third swing arm and the base.

[0061] In one possible implementation, the fourth slide groove is arc-shaped, with its center located on the side facing away from the base. In this embodiment, by making the fourth slide groove arc-shaped, it better accommodates the movement trajectory of the third swing arm relative to the second connecting member, thereby improving the smoothness of the rotation of the shaft mechanism. In other implementations, the fourth slide groove is arc-shaped, with its center located on the side facing the base. Alternatively, the fourth slide groove can also be straight.

[0062] In one possible implementation, when the hinge mechanism is in the folded state, the tangent of the fourth groove at the fourth position is parallel to the width direction of the base. When the hinge mechanism is in the folded state, the force exerted by the inner wall of the fourth groove on the first shaft is parallel or approximately parallel to the thickness direction of the base, thereby preventing the first shaft from sliding towards the third position when the hinge mechanism is dropped or impacted, thus improving the drop resistance of the hinge mechanism and the foldable electronic device.

[0063] In one possible implementation, when the pivot mechanism rotates from the unfolded state to the folded state, the rotation angle of the third swing arm relative to the base is 90° to 100°. The pivot mechanism provided in this embodiment can reduce the rotation angle of the third swing arm relative to the base when the pivot mechanism rotates from the unfolded state to the folded state, thereby reducing or even avoiding pressure from the third swing arm on the display screen. Simultaneously, it can increase the overlap between the third swing arm and the base when the pivot mechanism is in the folded state, improving the connection stability between the third swing arm and the base.

[0064] In one possible implementation, the rotating shaft mechanism further includes a first support member and a second support member. The first support member is stacked on top of the first connector, and the first support member is rotatably connected to the first connector and rotatably and slidably connected to the second swing arm. The second support member is stacked on top of the second connector, and the second support member is rotatably connected to the second connector and rotatably and slidably connected to the fourth swing arm.

[0065] When the pivot mechanism is in the folded state, the first support member and the second support member are arranged opposite each other, and the distance between the first support member and the second support member gradually increases along the direction close to the base, thereby forming a teardrop-shaped receiving space between the first support member, the second support member, and the base. The flexible part of the display screen is located within this receiving space to avoid squeezing the display screen.

[0066] When the hinge mechanism is in the unfolded state, the first support member and the second support member are located on opposite sides of the base in the width direction, and the top surface of the first support member is flush with the top surface of the second support member. The display screen is located on the same side of the first support member, the second support member, and the base. The first support member, the second support member, and the base jointly support the display screen. In this embodiment, by making the top surface of the first door panel flush with the top surface of the second door panel when the hinge mechanism is in the unfolded state, the support performance for the display screen can be improved, and the flatness of the display screen when the foldable electronic device is in the unfolded state can be improved.

[0067] Secondly, this application provides a foldable electronic device. The foldable electronic device includes a first housing, a second housing, a display screen, and the aforementioned hinge mechanism. The hinge mechanism connects the first housing and the second housing, and the display screen is mounted on the first housing, the second housing, and the hinge mechanism. When the hinge mechanism rotates, the first housing and the second housing rotate relative to each other, thereby causing the display screen to bend or unfold.

[0068] In summary, the pivot mechanism provided in this application, by rotating and slidingly connecting the first swing arm to the first connecting member and rotating and slidingly connecting it to the second swing arm, allows the first swing arm to rotate relative to the base and simultaneously rotate and slide relative to the first connecting member when the pivot mechanism rotates from the unfolded state to the folded state. Furthermore, the first swing arm moves relative to the first connecting member in the opposite direction to the rotation direction of the first connecting member. This reduces the rotation angle of the first swing arm relative to the base when the pivot mechanism rotates from the unfolded state to the folded state, thereby preventing the first swing arm from squeezing the display screen when the pivot mechanism is in the folded state, improving the display effect of the display screen, and extending the service life of the display screen. Attached Figure Description

[0069] To more clearly illustrate the technical solutions in the embodiments of this application or the background art, the accompanying drawings used in the embodiments of this application or the background art will be described below.

[0070] Figure 1 This is a schematic diagram of the structure of the foldable electronic device provided in the embodiments of this application in the first state;

[0071] Figure 2 This is a schematic diagram of the structure of the foldable electronic device provided in the embodiments of this application in the second state;

[0072] Figure 3 This is a schematic diagram of the structure of the foldable electronic device provided in the embodiments of this application in the third state;

[0073] Figure 4 yes Figure 3 The exploded view of the foldable electronic device shown.

[0074] Figure 5 yes Figure 4 A schematic diagram of the hinge mechanism in the foldable electronic device shown.

[0075] Figure 6 yes Figure 5 The exploded structural diagram of the rotating shaft mechanism shown;

[0076] Figure 7 yes Figure 5 A partial structural schematic diagram of the rotating shaft mechanism shown;

[0077] Figure 8 yes Figure 6 A partially exploded structural diagram of the rotating shaft mechanism shown.

[0078] Figure 9 yes Figure 6 A schematic diagram of the first and second connecting parts in the rotating shaft mechanism shown;

[0079] Figure 10 yes Figure 9 The diagram shows the structure of the first and second connectors from another angle.

[0080] Figure 11 yes Figure 9 The diagram shows a cross-sectional view of the first and second connectors along the AA direction.

[0081] Figure 12 yes Figure 6 A schematic diagram of the structure of the first and third swing arms in the rotating shaft mechanism shown;

[0082] Figure 13 yes Figure 10 A schematic diagram of the first and third swing arms at another angle;

[0083] Figure 14 yes Figure 7 The schematic diagram of the cross-sectional structure of the rotating shaft mechanism along the BB direction is shown.

[0084] Figure 15 yes Figure 6 A schematic diagram of the structure of the second and fourth swing arms in the rotating shaft mechanism shown;

[0085] Figure 16 yes Figure 7 The cross-sectional view of the rotating shaft mechanism shown is along the CC direction.

[0086] Figure 17 yes Figure 14 A schematic cross-sectional view of the rotating shaft mechanism in a folded state.

[0087] Figure 18 yes Figure 16 A schematic cross-sectional view of the rotating shaft mechanism in a folded state.

[0088] Figure 19 yes Figure 7 A simplified diagram of the rotating shaft mechanism shown;

[0089] Figure 20 This is a cross-sectional schematic diagram of a rotating structure provided in another embodiment of this application;

[0090] Figure 21 yes Figure 6 A schematic diagram of the first and second support members in the rotating shaft mechanism shown;

[0091] Figure 22 yes Figure 5 A partial structural diagram of the rotating shaft mechanism;

[0092] Figure 23 yes Figure 5 A partial structural diagram of the rotating shaft mechanism;

[0093] Figure 24 yes Figure 22 A schematic diagram of the rotating shaft mechanism in a folded state.

[0094] Figure 25 yes Figure 23 A schematic diagram of the rotating shaft mechanism in a folded state.

[0095] Figure 26 This is a partial structural schematic diagram of the rotating shaft mechanism provided in the second embodiment of this application;

[0096] Figure 27 yes Figure 26 The schematic diagram of the cross-sectional structure of the rotating shaft mechanism along the DD direction is shown.

[0097] Figure 28 yes Figure 26 An enlarged schematic diagram of the first swing arm in the rotating shaft mechanism shown;

[0098] Figure 29 yes Figure 27 A schematic cross-sectional view of the rotating shaft mechanism in a folded state.

[0099] Figure 30 This is a cross-sectional structural schematic diagram of the rotating shaft mechanism provided in the third embodiment of this application;

[0100] Figure 31 yes Figure 30 An enlarged schematic diagram of the first swing arm of the rotating shaft mechanism shown;

[0101] Figure 32yes Figure 30 A magnified schematic diagram of the second swing arm in the rotating shaft mechanism shown;

[0102] Figure 33 yes Figure 30 A schematic cross-sectional view of the rotating shaft mechanism in a folded state.

[0103] Figure 34 This is a partially exploded structural diagram of the rotating shaft mechanism provided in the third embodiment of this application;

[0104] Figure 35 This is an exploded structural diagram of the rotating shaft mechanism provided in the fourth embodiment of this application;

[0105] Figure 36 This is a cross-sectional structural schematic diagram of the rotating shaft mechanism provided in the fourth embodiment of this application;

[0106] Figure 37 This is a cross-sectional view of the rotating shaft mechanism provided in the fourth embodiment of this application at another location;

[0107] Figure 38 This is a cross-sectional structural schematic diagram of the rotating shaft mechanism provided in the fifth embodiment of this application. Detailed Implementation

[0108] The embodiments of this application are described below with reference to the accompanying drawings.

[0109] Please see Figures 1 to 3 , Figure 1 This is a schematic diagram of the structure of the foldable electronic device 500 provided in the embodiments of this application in the first state. Figure 2 This is a schematic diagram of the structure of the foldable electronic device 500 provided in the embodiments of this application in the second state. Figure 3 This is a structural schematic diagram of the foldable electronic device 500 provided in the embodiments of this application in the third state.

[0110] For ease of description, the width direction of the foldable electronic device 500 is defined as the X direction, the length direction of the foldable electronic device 500 is defined as the Y direction, and the thickness direction of the foldable electronic device 500 is defined as the Z direction. The X, Y, and Z directions are all perpendicular to each other.

[0111] Foldable electronic devices 500 include, but are not limited to, cellphones, notebook computers, tablet computers, laptop computers, personal digital assistants, wearable devices, or mobile devices. In this embodiment, a cellphone is used as an example of a foldable electronic device 500 for illustration.

[0112] Figure 1 The foldable electronic device 500 shown is in a folded state. Figure 2 The foldable electronic device 500 shown is in a semi-open state. Figure 3 The foldable electronic device 500 shown is in its unfolded state. Figure 2 The unfolding angle α of the foldable electronic device 500 shown is 90 degrees. Figure 3 The unfolding angle β of the foldable electronic device 500 shown is 180 degrees.

[0113] It should be noted that slight deviations are allowed in the angles illustrated in the embodiments of this application. For example, Figure 2 The unfolding angle α of the foldable electronic device 500 shown is 90 degrees. This means that α can be 90 degrees, or approximately 90 degrees, such as 80 degrees, 85 degrees, 95 degrees, or 0 degrees. Figure 3 The unfolding angle β of the foldable electronic device 500 shown is 180 degrees. This means that β can be 180 degrees, or approximately 180 degrees, such as 170 degrees, 175 degrees, 185 degrees, and 190 degrees. The angles illustrated in the following text can be understood in the same way.

[0114] The foldable electronic device 500 shown in this embodiment is an electronic device capable of being folded once. In some other embodiments, the foldable electronic device 500 may also be an electronic device capable of being folded multiple times (more than twice). In this case, the foldable electronic device 500 may include multiple parts, with adjacent parts folded relatively close together until the foldable electronic device 500 is in a folded state, and adjacent parts unfolded relatively far apart until the foldable electronic device 500 is in an unfolded state.

[0115] Please see Figure 4 , Figure 4 yes Figure 3 The exploded structural diagram of the foldable electronic device 500 is shown.

[0116] The foldable electronic device 500 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 disposed opposite to each other. The display surface 310 is used to display text, images, and videos, etc. The display screen 300 includes a first portion 330, a second portion 340, and a flexible portion 350. The flexible portion 350 is located between the first portion 330 and the second portion 340, and can be bent about a direction with the Y-axis as its axis. The first portion 330, the second portion 340, and the flexible 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, a mini organic light-emitting diode (MLED) display screen, a micro organic light-emitting diode (MOLED) display screen, a quantum dot light-emitting diode (QLED) display screen.

[0117] The folding device 200 includes a first housing 210, a second housing 220, and a pivot mechanism 100. The pivot mechanism 100 is located between the first housing 210 and the second housing 220 and is fixedly connected to both housings 210 and 220 to achieve a rotatable connection between them. A display screen 300 is mounted on the folding device 200, and its mounting surface 320 is fixedly connected to it. Specifically, the first housing 210 carries a first portion 330 of the display screen 300, and the second housing 220 carries a 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 pivot mechanism 100 is positioned opposite to the bendable portion 350. The first housing 210 and the second housing 220 can rotate relative to each other via the pivot mechanism 100, allowing the folding device 200 to switch between a folded state and an unfolded state.

[0118] Combination Figure 1The first housing 210 and the second housing 220 rotate relative to each other via a pivot mechanism 100. The relative proximity of the first housing 210 and the second housing 220 causes the display screen 300 to fold, thus folding the foldable electronic device 500. When the foldable electronic device 500 is in the folded state, the bendable portion 350 of the display screen 300 bends, and the first portion 330 and the second portion 340 are positioned opposite each other. At this time, the display screen 300 is positioned between the first housing 210 and the second housing 220, which greatly reduces the probability of damage to the display screen 300 and effectively protects it.

[0119] Please refer to the following: Figure 2 and Figure 4 The first housing 210 and the second housing 220 rotate relative to each other via a pivot mechanism 100. The relative movement of the first housing 210 and the second housing 220 causes the display screen 300 to unfold, thus unfolding the foldable electronic device 500 to a semi-unfolded state. When the foldable electronic device 500 is in the semi-unfolded state, the first housing 210 and the second housing 220 unfold to an angle α, the first part 330 and the second part 340 unfold relative to each other, and the flexible part 350 unfolds. At this time, the angle between the first part 330 and the second part 340 is α. In this embodiment, α is 90 degrees. In other embodiments, α can also be approximately 90 degrees, or it can be 80 degrees, 85 degrees, 95 degrees, or 0 degrees, etc.

[0120] Please refer to the following: Figure 3 and Figure 4 The first housing 210 and the second housing 220 rotate relative to each other via the pivot mechanism 100. The relative distance between the first housing 210 and the second housing 220 causes the display screen 300 to further unfold until the foldable electronic device 500 is flattened. When the folding device 200 is in the unfolded state, the included angle between the first housing 210 and the second housing 220 is β. The flexible portion 350 unfolds, and the first portion 330 and the second portion 340 unfold relative to each other. At this time, the included angle between the first portion 330, the second portion 340, and the flexible portion 350 is all β, and the display screen 300 has a large display area, realizing a large-screen display of the foldable electronic device 500 and improving the user experience. In this embodiment, β is 180 degrees. In other embodiments, β can also be approximately 180 degrees, such as 170 degrees, 175 degrees, 185 degrees, and 190 degrees.

[0121] It should be noted that both included angle α and included angle β are the angles between the first housing 210 and the second housing 220. These angles are used here only to distinguish the different angles between the first housing 210 and the second housing 220 in different states of the foldable electronic device 500. Specifically, included angle α refers to the angle between the first housing 210 and the second housing 220 when the foldable electronic device 500 is in its semi-open state; included angle β refers to the angle between the first housing 210 and the second housing 220 when the foldable electronic device 500 is in its open state.

[0122] Please see Figure 5 and Figure 6 , Figure 5 yes Figure 4 The schematic diagram of the rotating shaft mechanism 100 in the foldable electronic device 500 is shown. Figure 6 yes Figure 5 An exploded view of the rotating shaft mechanism 100 shown.

[0123] The rotating shaft mechanism 100 includes a base 10, a first rotating assembly 1, a second rotating assembly 2, a first support member 51, and a second support member 52. The first rotating assembly 1 and the second rotating assembly 2 are located on opposite sides of the base 10 in the width direction (X direction) and are rotatably connected to the base 10. The first support member 51 is stacked with the first rotating assembly 1 along the Z direction and is rotatably and slidably connected to the first rotating assembly 1. The second support member 52 is stacked with the second rotating assembly 2 along the Z direction and is rotatably and slidably connected to the second rotating assembly 2. When the first rotating assembly 1 rotates relative to the base 10, it drives the first support member 51 to rotate relative to the base 10, and also causes the first support member 51 to rotate relative to the first rotating assembly 1. When the second rotating assembly 2 rotates relative to the base 10, it drives the second support member 52 to rotate relative to the base 10, and also causes the second support member 52 to rotate relative to the second rotating assembly 2, thereby realizing the rotation of the rotating shaft mechanism 100 and allowing the rotating shaft mechanism 100 to switch between a folded state and an unfolded state.

[0124] For ease of description, this application sets a reference plane P (e.g., ...). Figure 5 (As shown). The reference plane P is perpendicular to the X direction and passes through the center of the rotating shaft mechanism 100. In this embodiment, the rotating shaft mechanism 100 is mirror-symmetric about the reference plane P. In other embodiments, the rotating shaft mechanism 100 may also be an asymmetrical structure.

[0125] Please refer to the following: Figure 6 and Figure 7 , Figure 7 yes Figure 5 A partial structural schematic diagram of the rotating shaft mechanism 100 shown.

[0126] The rotating shaft mechanism 100 includes multiple sets of rotating structures. These rotating structures are spaced apart along the Y-direction on the base 10. In this embodiment, there are three rotating structures: a first rotating structure 3, a second rotating structure 3A, and a third rotating structure 3B. These three structures are arranged sequentially along the Y-direction. The first rotating structure 3 is located on the positive Y-axis side of the base, and the third rotating structure 3B is located on the negative Y-axis side of the base. The second rotating structure 3A is located between the first and second rotating structures to enhance the stability of the entire rotating shaft mechanism 100. In other embodiments, there may be one, two, or four or more rotating structures. The number of rotating structures can be adjusted according to actual conditions, and no specific limit is placed on the number of rotating structures here.

[0127] The first rotating structure 3 includes a first connecting member 21, a second connecting member 22, a first swing arm 31, a second swing arm 41, a third swing arm 32, and a fourth swing arm 42. The first connecting member 21, the first swing arm 31, and the second swing arm 41 are all mounted on one side of the base 10 along the positive X-axis. The first connecting member 21 is fixedly connected to the first housing 210. The first swing arm 31 and the second swing arm 41 are arranged adjacent to each other along the Y-direction and are both connected between the base 10 and the first connecting member 21. Specifically, one end of the first swing arm 31 is rotatably connected to the base 10, and the other end is rotatably and slidably connected to the first connecting member 21. Similarly, one end of the second swing arm 41 is rotatably connected to the base 10, and the other end is slidably connected to the first connecting member 21. Simultaneously, the first swing arm 31 and the second swing arm 41 are rotatably and slidably connected.

[0128] The second connector 22, the third swing arm 32, and the fourth swing arm 42 are all mounted on the negative X-axis side of the base 10. The second connector 22 is fixedly connected to the second housing 220. The third swing arm 32 and the fourth swing arm 42 are arranged adjacent to each other along the Y-direction and are both connected between the base 10 and the second connector 22. Specifically, one end of the third swing arm 32 is rotatably connected to the base 10, and the other end is rotatably and slidably connected to the second connector 22. One end of the fourth swing arm 42 is rotatably connected to the base 10, and the other end is slidably connected to the second connector 22. At the same time, the third swing arm 32 and the fourth swing arm 42 are rotatably and slidably connected.

[0129] In this embodiment, the first swing arm 31, the second swing arm 41, the third swing arm 32, and the fourth swing arm 42 in the first rotating structure 3 are all one. In other embodiments, the first rotating structure 3 may also include multiple first swing arms 31, or / and multiple second swing arms 41, or / and multiple third swing arms 32, or / and multiple fourth swing arms 42.

[0130] The second rotating structure 3A and the first rotating structure 3 can be the same or similar components, symmetrical or partially symmetrical structures, or different structures. In this embodiment, the second rotating structure 3A and the first rotating structure 3 are the same structure. The second rotating structure 3A includes a first connecting member 21A, a second connecting member 22A, a first swing arm 31A, a second swing arm 41A, a third swing arm 32A, and a fourth swing arm 42A. The basic structure of each component in the second rotating structure 3A, the connection relationship between the components, and the connection relationship between the components and components other than the assembly can all refer to the relevant design of the first rotating structure 3, and will not be elaborated here.

[0131] The third rotating structure 3B and the first rotating structure 3 can be the same or similar components, symmetrical or partially symmetrical structures, or different structures. In this embodiment, the third rotating structure 3B and the first rotating structure 3 are symmetrical structures. The third rotating structure 3B includes a first connecting member 21B, a second connecting member 22B, a first swing arm 31B, a second swing arm 41B, a third swing arm 32B, and a fourth swing arm 42B. The basic structure of each component in the third rotating structure 3B, the connection relationship between the components, and the connection relationship between the components and components other than the main components can all refer to the relevant design of the first rotating structure 3, and will not be elaborated here.

[0132] In this embodiment, the first connecting members 21 of the multiple rotating structures are all separate structures, that is, individual structural components, and are not fixed to each other. In other embodiments, the first connecting members of the multiple rotating structures can also be fixedly connected to each other, or they can be a one-piece molded structure. The second connecting members of the multiple rotating structures can be separate structures, fixedly connected to each other, or they can be a one-piece molded structure.

[0133] It is understood that, in the embodiments of this application, the first rotating assembly 1 includes first connecting members 21, 21A, and 21B, first swing arms 31, 31A, and 31B, and second swing arms 41, 41A, and 41B. The second rotating assembly 2 includes second connecting members 22, 22A, and 22B, third swing arms 32, 32A, and 32B, and fourth swing arms 42, 42A, and 42B.

[0134] In some other embodiments, the rotating shaft mechanism 100 may further include a synchronization component and a damping component (not shown). The synchronization component is mounted on the base 10 and connected to the first connecting member 21 and the second connecting member 22. The synchronization component is used to achieve synchronous rotation of the structures on opposite sides of the base 10 in the X direction, that is, to achieve synchronous rotation of the first rotating component 1 and the second rotating component 2. The damping component is mounted on the base 10 and connected to the base 10 and the first rotating component 1 and the second rotating component 2. The damping component is used to provide damping force for the rotation of the rotating shaft mechanism 100, thereby providing a damped feel for the user.

[0135] Please see Figure 8 , Figure 8 yes Figure 6 A partially exploded structural diagram of the rotating shaft mechanism 100 shown.

[0136] The base 10 is an elongated structure. The base 10 includes a top surface 101, a bottom surface 102, a first side surface 103, and a second side surface 104. The top surface 101 and the bottom surface 102 are arranged opposite each other along the Z-direction. The first side surface 103 and the second side surface 104 are arranged opposite each other and located on opposite sides in the X-direction, connecting the top surface 101 and the bottom surface 102. The top surface 101 is provided with a clearance groove 105. The clearance groove 105 is arranged along the Y-direction and located at the center of the top surface 101 along the X-direction. In this embodiment, the clearance groove 105 is arc-shaped. The clearance groove 105 is used to avoid the bendable portion of the display screen 300 when the foldable electronic device 500 is in a folded state. That is, when the foldable electronic device 500 is in a folded state, the bendable portion of the display screen 300 bends towards the clearance groove 105. In this embodiment, by providing an avoidance groove 105 in the middle of the base 10, the base 10 can be prevented from squeezing the display screen 300 when the foldable electronic device 500 is in a folded state, thereby extending the service life of the display screen 300.

[0137] It should be understood that the directional terms such as "top" and "bottom" used in the description of the rotating shaft mechanism 100 in this application are mainly based on the fact that the rotating shaft mechanism 100 is attached to the auxiliary shaft. Figure 5 The orientation of the rotating mechanism 100 in the display is described, with the positive Z-axis direction when the rotating mechanism 100 is in the unfolded state being "top" and the negative Z-axis direction being "bottom". This does not constitute a limitation on the orientation of the rotating mechanism 100 in actual application scenarios.

[0138] The base 10 is provided with a first rotating groove 11. The first rotating groove 11 is arc-shaped. The first rotating groove 11 is arranged along the X direction and bends towards the bottom surface 102 of the base 10. One end of the first rotating groove 11 in the extending direction is located on the first side surface 103 and penetrates the first side surface 103 in the X direction. The first rotating groove 11 is provided with first arc-shaped grooves 13 on opposite sides in the Y direction. The first arc-shaped grooves 13 are arc-shaped, and the curvature is the same as or approximately the same as the curvature of the first rotating groove 11. Both the first rotating groove 11 and the first arc-shaped grooves 13 are used to install the first swing arm 31, and the first swing arm 31 can rotate along the first rotating groove 11 and the first arc-shaped grooves 13. That is, the first swing arm 31 can slide along the arc-shaped extending direction of the first rotating groove 11 and the arc-shaped extending direction of the first arc-shaped groove 13.

[0139] In this embodiment, the curvature of the first rotating groove 11 is the same at every position, and the curvature of the first arc-shaped groove 13 is the same at every position. The axis of the first rotating groove 11 coincides with the axis of the first arc-shaped groove 13 and is parallel to the Y direction. When the first swing arm 31 slides in an arc along the first rotating groove 11 and the first arc-shaped groove 13, it can also be understood that the first rotating groove 11 rotates around the axis of the first rotating groove 11 and the axis of the first arc-shaped groove 13.

[0140] The base 10 is also provided with a second rotating groove 12. The second rotating groove 12 is arc-shaped. The second rotating groove 12 is arranged along the X direction and bends towards the bottom surface 102 of the base 10. The second rotating groove 12 and the first rotating groove 11 are arranged opposite each other along the X direction. One end of the second rotating groove 12 extends along the second side surface 104 and penetrates the second side surface 104 in the X direction. The second rotating groove 12 has second arc-shaped grooves 14 on opposite sides in the Y direction. The second arc-shaped grooves 14 are arc-shaped, and their curvature is the same as or approximately the same as that of the second rotating groove 12. Both the second rotating groove 12 and the second arc-shaped groove 14 are used to install a third swing arm 32, and the third swing arm 32 can rotate along the second rotating groove 12 and the second arc-shaped groove 14. That is, the third swing arm 32 can slide along the arc-shaped extension direction of the second rotating groove 12 and the arc-shaped extension direction of the second arc-shaped groove 14. The axis of the second rotating groove 12 coincides with the axis of the second arc-shaped groove 14 and is parallel to the Y direction. When the third swing arm 32 slides in an arc along the second rotating groove 12 and the second arc-shaped groove 14, it can also be understood that the second rotating groove 12 rotates around the axis of the second rotating groove 12 and the axis of the second arc-shaped groove 14.

[0141] The base 10 is also provided with a first shaft hole 15 and a second shaft hole 16. The axial direction of the first shaft hole 15 and the axial direction of the second shaft hole 16 are both parallel to the Y direction, and the first shaft hole 15 and the second shaft hole 16 are arranged side by side and spaced apart along the X direction. The first shaft hole 15 and the first rotating groove 11 are arranged side by side and spaced apart along the Y direction, and the second shaft hole 16 and the second rotating groove 12 are arranged side by side and spaced apart along the Y direction.

[0142] The rotating shaft mechanism 100 also includes a first rotating shaft 17 and a second rotating shaft 18. The first rotating shaft 17 is installed in a first shaft hole 15 and is used to connect with a second swing arm 41 to achieve a rotational connection between the second swing arm 41 and the base 10. The second rotating shaft 18 is installed in a second shaft hole 16 and is used to connect with a fourth swing arm 42 to achieve a rotational connection between the fourth swing arm 42 and the base 10.

[0143] It should be noted that, Figure 8The diagram only shows a portion of the base 10 in the positive Y-axis direction. The structure of the base 10 in the negative Y-axis direction is the same as or similar to that in the positive Y-axis direction. Furthermore, the structure of the base 10 in the negative Y-axis direction can be appropriately adjusted based on the structure of the rotating structure mounted on the base 10 in the positive Y-axis direction.

[0144] Please see Figures 9 to 11 , Figure 9 yes Figure 6 The schematic diagram of the structure of the first connecting member 21 and the second connecting member 22 in the rotating shaft mechanism 100 shown is shown. Figure 10 yes Figure 9 The diagram shows the structure of the first connector 21 and the second connector 22 from another angle. Figure 11 yes Figure 9 The diagram shows a cross-sectional view of the first connector 21 and the second connector 22 along the AA direction.

[0145] The first connecting member 21 includes a first surface 201, a second surface 202, a first side surface 203, and a second side surface 204. The first surface 201 and the second surface 202 are arranged opposite each other along the Z direction. The first side surface 203 and the second side surface 204 are arranged opposite each other along the X direction and are both connected between the first surface 201 and the second surface 202. In this embodiment, the first connecting member 21 is a wedge-shaped block, and the cross-section of the first connecting member 21 perpendicular to the Y direction is wedge-shaped. The second surface 202 is a plane and parallel to the XY plane. The first surface 201 is an inclined plane, and the angle between the first surface 201 and the second surface 202 is greater than 0 degrees and less than 90 degrees. Along the direction from the second side surface 204 to the first side surface 203, the distance between the first surface 201 and the second surface 202 gradually decreases.

[0146] The first connecting member 21 is provided with a second sliding groove 213. The second sliding groove 213 is used to mount the first swing arm 31 to achieve a rotatable and slidable connection between the first swing arm 31 and the first connecting member 21. The depth direction of the second sliding groove 213 is parallel to the Y direction, that is, the length direction of the second sliding groove 213 is parallel to the Y direction. The second sliding groove 213 includes a first position 217 and a second position 218. The first position 217 and the second position 218 are respectively located at opposite ends of the extension direction of the second sliding groove 213. The first position 217 and the second position 218 are spaced apart in the Z direction. Furthermore, the second position 218 is located on the negative Z-axis side of the first position 217. That is, the first position 217 is located at the end of the second sliding groove 213 near the first surface 201, and the second position 218 is located at the end of the second sliding groove 213 near the second surface 202.

[0147] In this embodiment, the first position 217 and the second position 218 are also spaced apart in the X direction. That is, the first position 217 and the second position 218 are staggered in both the X and Z directions. Specifically, the connecting line between the first position 217 and the second position 218 intersects both the X and Z directions. The second position 218 is located on the negative X-axis side of the first position 217. That is, the first position 217 is located at one end of the second groove 213 near the first surface 201 and the second side surface 204, and the second position 218 is located at one end of the second groove 213 near the second surface 202 and the first side surface 203. In other embodiments, the second position 218 is located on the positive X-axis side of the first position 217. Alternatively, the second position 218 can also be arranged side-by-side with the first position 217 along the Z direction, meaning the connecting line between the second position 218 and the first position 217 is parallel to the Z direction.

[0148] In this embodiment, the second groove 213 is an arc-shaped groove. That is, the cross-section of the second groove 213 perpendicular to the Y direction is arc-shaped. For example, the center of the second groove 213 is located on one side of the positive X-axis of the second groove 213. Alternatively, the center of the second groove 213 may also be located on one side of the negative X-axis of the second groove 213. Alternatively, the second groove 213 may also be straight or have other shapes.

[0149] In this embodiment, the first connector 21 is further provided with a first notch 211. The first notch 211 is recessed in the first surface 201 and extends through the first side surface 203. A first bearing seat 212 is provided inside the first notch 211. The first bearing seat 212 faces the first side surface 203. There are two second sliding grooves 213. One second sliding groove 213 is provided inside the first bearing seat 212 and extends through the first bearing seat 212 along the Y direction. The other second sliding groove 213 is provided in the side wall of the first notch 211 and communicates with the first notch 211. The two second sliding grooves 213 are parallel and spaced apart along the Y direction. Both second sliding grooves 213 are used to rotate and slide with the first swing arm 31 to improve the connection stability between the first swing arm 31 and the first connector 21.

[0150] like Figure 9 and Figure 10 As shown, the first connector 21 also includes a fifth slide groove 214 and a sixth slide groove 219. The fifth slide groove 214 is used to mount the second swing arm 41, and the second swing arm 41 can slide along the fifth slide groove 214. The extending direction of the fifth slide groove 214 is parallel or substantially parallel to the width direction of the first surface 201. Alternatively, the extending direction of the fifth slide groove 214 may also be parallel to the X direction. The opposite ends of the extending direction of the fifth slide groove 214 pass through the first side surface 203 and the second side surface 204, respectively.

[0151] In this embodiment, the fifth slide 214 includes a first sub-slide 215 and a second sub-slide 216. The first sub-slide 215 and the second sub-slide 216 are spaced apart along the Y direction and are arranged side by side with the first notch 211 along the Y direction. The first sub-slide 215 is located between the second sub-slide 216 and the first notch 211, and the first sub-slide 215 communicates with the first notch 211.

[0152] The sixth slide groove 219 is an arc-shaped groove used for rotatable connection with the first support member 51. In this embodiment, the sixth slide groove 219 is located at one end of the first connecting member 21 in the Y direction.

[0153] Please continue reading. Figures 9 to 11 The second connector 22 and the first connector 21 are mirror images of each other about the reference plane P. The second connector 22 includes a third surface 205, a fourth surface 206, a third side surface 207, and a fourth side surface 208. The third surface 205 and the fourth surface 206 are arranged opposite each other along the Z direction. The third side surface 207 and the fourth side surface 208 are arranged opposite each other along the X direction and are both connected between the third surface 205 and the fourth surface 206.

[0154] The second connector 22 is provided with a fourth slide groove 223. The fourth slide groove 223 is used to mount the third swing arm 32, so as to realize the rotation and sliding connection between the third swing arm 32 and the second connector 22. The depth direction of the fourth slide groove 223 is parallel to the Y direction, that is, the length direction of the fourth slide groove 223 is parallel to the Y direction. The fourth slide groove 223 includes a third position 227 and a fourth position 228. The third position 227 and the fourth position 228 are respectively located at opposite ends of the extension direction of the fourth slide groove 223. The third position 227 and the fourth position 228 are spaced apart in the Z direction. Furthermore, the fourth position 228 is located on the negative Z-axis side of the third position 227. That is, the third position 227 is located at the end of the fourth slide groove 223 near the third surface 205, and the fourth position 228 is located at the end of the fourth slide groove 223 near the fourth surface 206.

[0155] In this embodiment, the third position 227 and the fourth position 228 are also spaced apart in the X direction. That is, the third position 227 and the fourth position 228 are staggered in both the X and Z directions. Specifically, the connecting line between the third position 227 and the fourth position 228 intersects both the X and Z directions. The fourth position 228 is located on the positive X-axis and negative Z-axis side of the third position 227. In other embodiments, the third position 227 and the fourth position 228 are staggered in both the X and Z directions, and the fourth position 228 may also be located on the positive X-axis side of the third position 227. Alternatively, the fourth position 228 may be arranged side-by-side with the third position 227 along the Z direction, meaning the connecting line between the fourth position 228 and the third position 227 is parallel to the Z direction.

[0156] In this embodiment, the fourth groove 223 is an arc-shaped groove. That is, the cross-section of the fourth groove 223 perpendicular to the Y direction is arc-shaped. For example, the center of the fourth groove 223 is located on the negative X-axis side of the fourth groove 223. Alternatively, the center of the fourth groove 223 may also be located on the positive X-axis side of the fourth groove 223. Alternatively, the fourth groove 223 may also be straight or have other shapes.

[0157] In this embodiment, the second connector 22 is provided with a second notch 221. A second bearing seat 222 is provided inside the second notch 221. The second bearing seat 222 faces the fourth side 208. There are two fourth sliding grooves 223. One fourth sliding groove 223 is located inside the second bearing seat 222 and extends through the second bearing seat 222 along the Y direction. The other fourth sliding groove 223 is located on the side wall of the second notch 221 and communicates with the second notch 221. The two fourth sliding grooves 223 are parallel and spaced apart along the Y direction. Both fourth sliding grooves 223 are used to rotate and slide with the third swing arm 32 to improve the connection stability between the third swing arm 32 and the second connector 22.

[0158] The second connector 22 is further provided with a seventh slide groove 224 and an eighth slide groove 229. The seventh slide groove 224 is used to install the fourth swing arm 42, and the fourth swing arm 42 can slide along the seventh slide groove 224. The opposite ends of the extension direction of the seventh slide groove 224 respectively penetrate the third side surface 207 and the fourth side surface 208. The seventh slide groove 224 includes a third sub-slide groove 225 and a fourth sub-slide groove 226. The third sub-slide groove 225 and the fourth sub-slide groove 226 are spaced apart along the Y direction and are arranged side by side with the second notch 221 along the Y direction. Among them, the third sub-slide groove 225 is located between the fourth sub-slide groove 226 and the second notch 221, and the third sub-slide groove 225 communicates with the second notch 221.

[0159] The eighth slide groove 229 is used for rotatable and slidable connection with the second support member 52. In this embodiment, the eighth slide groove 229 is provided at one end of the second connecting member 22 in the Y direction. The extending direction of the eighth slide groove 229 intersects both the X and Z directions. The eighth slide groove 229 can be arc-shaped or straight.

[0160] Please see Figure 12 and Figure 13 , Figure 12 yes Figure 6 The schematic diagram of the structure of the first swing arm 31 and the third swing arm 32 in the rotating shaft mechanism 100 shown is as follows. Figure 13 yes Figure 12 The diagram shows the structure of the first swing arm 31 and the third swing arm 32 at another angle.

[0161] The first swing arm 31 includes a first rotating body 311, a first oscillating body 312, a first shaft 313, a first slide rail 315, and a first arc-shaped block 314. The bottom surface 102 of the first rotating body 311 is an arc surface, and the structure of the first rotating body 311 matches the structure of the first rotating groove 11 provided on the base 10. That is, the curvature of the bottom surface 102 of the first rotating body 311 is the same as or approximately the same as the curvature of the bottom wall of the first rotating groove 11. When the first swing arm 31 is installed in the first rotating groove 11, the bottom surface 102 of the first rotating body 311 faces the bottom wall of the first rotating groove 11 and can rotate along the bottom wall of the first rotating groove 11.

[0162] In this embodiment, there are two first arc-shaped blocks 314. The two first arc-shaped blocks 314 are respectively connected to opposite sides of the first rotating body 311 in the Y direction. The first arc-shaped blocks 314 have an arc-shaped structure; that is, the cross-section of the first arc-shaped block 314 is arc-shaped. Furthermore, the structure of the first arc-shaped block 314 matches the structure of the first arc-shaped groove 13 provided on the base 10. The first arc-shaped blocks 314 are installed within the first arc-shaped groove 13 and can slide along the arc-shaped extension direction of the first arc-shaped groove 13.

[0163] The first swing body 312 is connected to one end of the first rotating body 311 along its extension direction. The first shaft 313 is connected to the end of the first swing body 312 away from the first rotating body 311. The extension direction of the first shaft 313 is parallel to the Y direction. The first shaft 313 is used to connect with the second slide groove 213 to realize the rotational and sliding connection between the first swing arm 31 and the first connecting member 21.

[0164] In this embodiment, there are two first shafts 313. The two first shafts 313 are spaced apart along the Y direction, and their axes coincide. One first shaft 313 is installed in a second groove 213 located in the first bearing seat 212, and the other first shaft 313 is installed in a second groove 213 located on the side wall of the first notch 211. Both first shafts 313 can rotate and slide along their corresponding second grooves 213, thereby improving the connection stability between the first swing arm 31 and the first connecting member 21. In other embodiments, there may be only one first shaft 313 and only one corresponding second groove 213, to simplify the structure of the first swing arm 31 and the first connecting member 21.

[0165] The first slide rail 315 is connected to the side of the first swing body 312 and is used for rotational and sliding connection with the second swing arm 41. The first slide rail 315 is a strip-shaped plate structure. The first slide rail 315 includes a first end 318 and a second end 319. The first end 318 and the second end 319 are located at opposite ends in the extension direction of the first slide rail 315. The first end 318 and the second end 319 are offset along the thickness direction and the length direction of the first swing arm 31. It should be noted that when the rotating shaft mechanism 100 is in the unfolded state, the thickness direction of the first swing arm 31 is parallel or approximately parallel to the Z direction, the length direction of the first swing arm 31 is parallel or approximately parallel to the X direction, and the width direction of the first swing arm 31 is parallel or approximately parallel to the Y direction.

[0166] In other words, when the rotating shaft mechanism 100 is in the unfolded state, the first end 318 and the second end 319 are offset along both the X and Z directions. That is, the connecting line between the first end 318 and the second end 319 intersects both the X and Z directions. Specifically, the second end 319 is located in the negative X-axis direction and the positive Z-axis direction of the first end 318. In other words, the second end 319 is located on the side of the first end 318 facing the base, and also on the side of the first end 318 facing the display screen.

[0167] In this embodiment, the first slide rail 315 is an arc-shaped slide rail. That is, the cross-section of the first slide rail 315 is arc-shaped. The first slide rail 315 includes a first segment 316 and a second segment 317. The first segment 316 and the second segment 317 are connected along the extending direction of the first slide rail 315. The first segment 316 is located on the side of the second segment 317 closer to the first shaft 313. Among them, the first end 318 is located at the end of the first segment 316 away from the second segment 317, and the second end 319 is located at the end of the second segment 317 away from the first segment 316. In this embodiment, the center of the first slide rail 315 is located on the positive Z-axis direction of the first slide rail 315, that is, the center of the first slide rail 315 is located on the side of the first slide rail 315 facing the display screen 300. The radius of curvature of the first segment 316 is greater than the radius of curvature of the second segment 317. That is, the degree of curvature of the first segment 316 is less than the degree of curvature of the second segment 317. For example, the first segment 316 is approximately straight, and the second segment 317 is curved. The extension direction of the first segment 316 is approximately parallel to the extension direction of the first oscillating body 312. Alternatively, the extension direction of the first segment 316 and the extension direction of the first oscillating body 312 also have a small angle. The second segment 317 extends in an arc towards the top surface of the first oscillating body 312, that is, towards the positive Z-axis direction. Alternatively, both the first segment 316 and the second segment 317 can be curved. Here, "the extension direction of the first oscillating body 312" refers to the extension direction of the first oscillating body 312 from the base 10 towards the first connecting member 21.

[0168] In one embodiment, the first slide rail 315 has an arc-shaped structure, and the center of the first slide rail 315 is located on one side of the negative Z-axis direction of the first slide rail 315. That is, the second segment 317 extends in an arc towards the bottom surface of the first swing body 312, that is, it extends towards the negative Z-axis direction. Alternatively, the first slide rail 315 can also be straight. That is, both the first segment 316 and the second segment 317 are straight and connected in a straight line. Here, the shape of the first slide rail 315 is not specifically limited, as long as it can realize the rotation and sliding connection between the first swing arm 31 and the second swing arm 41.

[0169] Please continue reading. Figure 12 and Figure 13 The third swing arm 32 is a mirror image of the first swing arm 31. The third swing arm 32 includes a second rotating body 321, a second oscillating body 322, a second shaft 323, a second slide rail 325, and a second arc-shaped block 324. The second rotating body 321 and the second shaft 323 are respectively connected to the opposite ends of the second oscillating body 322.

[0170] The second shaft 323 extends parallel to the Y-direction. The second shaft 323 connects to the fourth slide groove 223 to achieve a rotatable and slidable connection between the third swing arm 32 and the second connecting member 22. In this embodiment, there are two second shafts 323. The two second shafts 323 are spaced apart along the Y-direction, and their axes coincide. One second shaft 323 is installed in the fourth slide groove 223 located in the second shaft seat 222, and the other second shaft 323 is installed in the fourth slide groove 223 located on the side wall of the second notch 221. Both second shafts 323 can rotate and slide along their corresponding fourth slide grooves 223 to improve the connection stability between the third swing arm 32 and the second connecting member 22. In other embodiments, there may be only one second shaft 323 and only one corresponding fourth slide groove 223 to simplify the structure of the third swing arm 32 and the second connecting member 22.

[0171] The bottom surface 102 of the second rotating body 321 is arc-shaped, and the structure of the second rotating body 321 matches the structure of the second rotating groove 12 provided on the base 10. When the third swing arm 32 is installed in the second rotating groove 12, the bottom surface 102 of the second rotating body 321 faces the bottom wall of the second rotating groove 12 and can rotate along the bottom wall of the second rotating groove 12. There are two second arc-shaped blocks 324. The two second arc-shaped blocks 324 are respectively connected to the opposite sides of the second rotating body 321 in the Y direction. The second arc-shaped blocks 324 are arc-shaped, and the structure of the second arc-shaped blocks 324 matches the structure of the second arc-shaped groove 14 provided on the base 10. The second arc-shaped blocks 324 are installed in the second arc-shaped groove 14 and can slide along the arc-shaped extension direction of the second arc-shaped groove 14.

[0172] The second slide rail 325 is connected to the side of the second swing body 322 and is used for rotational and sliding connection with the fourth swing arm 42. The second slide rail 325 has a strip-shaped structure. The second slide rail 325 includes a third end 328 and a fourth end 329. The third end 328 and the fourth end 329 are located at opposite ends of the extension direction of the second slide rail 325. The third end 328 and the fourth end 329 are offset along the thickness direction and the length direction of the third swing arm 32. It should be noted that when the rotating shaft mechanism 100 is in the unfolded state, the thickness direction of the third swing arm 32 is parallel or approximately parallel to the Z direction, the length direction of the third swing arm 32 is parallel or approximately parallel to the X direction, and the width direction of the third swing arm 32 is parallel or approximately parallel to the Y direction. That is, when the rotating shaft mechanism 100 is in the unfolded state, the third end 328 and the fourth end 329 are offset along both the X and Z directions. In other words, the connecting line between the third end 328 and the fourth end 329 intersects both the X and Z directions. The fourth end 329 is located in the positive X-axis and positive Z-axis directions of the third end 328. That is, the fourth end 329 is located on the side of the third end 328 facing the base 10, and the fourth end 329 is located on the side of the third end 328 facing the display screen 300.

[0173] In this embodiment, the second slide rail 325 is an arc-shaped slide rail. That is, the cross-section of the second slide rail 325 is arc-shaped. The second slide rail 325 includes a third segment 326 and a fourth segment 327. The third segment 326 and the fourth segment 327 are connected along the extending direction of the second slide rail 325. The third segment 326 is located on the side of the fourth segment 327 closer to the second shaft 323. Specifically, the third end 328 is located at the end of the third segment 326 away from the fourth segment 327, and the fourth end 329 is located at the end of the fourth segment 327 away from the third segment 326. In this embodiment, the center of the second slide rail 325 is located on the positive Z-axis side of the second slide rail 325, that is, the center of the second slide rail 325 is located on the side of the second slide rail 325 facing the display screen. The radius of curvature of the third segment 326 is greater than the radius of curvature of the fourth segment 327. That is, the degree of curvature of the third segment 326 is less than the degree of curvature of the fourth segment 327. For example, the third segment 326 is generally straight, and the fourth segment 327 is curved. The extension direction of the third segment 326 is generally parallel to the extension direction of the second swing body 322. Alternatively, the extension direction of the third segment 326 and the extension direction of the second swing body 322 may also have a small angle. The fourth segment 327 extends in an arc towards the top surface of the second swing body 322, that is, towards the positive Z-axis direction. Alternatively, both the third segment 326 and the fourth segment 327 may be curved. Here, "the extension direction of the second swing body 322" refers to the extension direction of the second swing body 322 from the base 10 towards the second connector 22.

[0174] In one embodiment, the second slide rail 325 is an arc-shaped slide rail, and the center of the second slide rail is located on one side of the negative Z-axis direction of the second slide rail 325. That is, the fourth segment 327 extends in an arc towards the bottom surface of the second swing body 322, that is, it extends towards the negative Z-axis direction. Alternatively, the second slide rail 325 can also be straight. That is, the third segment 326 and the fourth segment 327 are both straight and connected in a straight line. Here, the shape of the second slide rail 325 is not specifically limited, as long as it can realize the rotation and sliding connection between the third swing arm 32 and the fourth swing arm 42.

[0175] Please combine Figure 7 and Figure 14 , Figure 14 yes Figure 7 The schematic diagram of the cross-sectional structure of the rotating shaft mechanism 100 along the BB direction is shown.

[0176] Both the first connecting member 21 and the first swing arm 31 are installed on one side of the positive X-axis of the base 10, and the first swing arm 31 connects the base 10 and the first connecting member 21. The first connecting member 21 is fixedly connected to the first housing 210. The first rotating body 311 is installed in the first rotating groove 11, with its bottom wall facing the bottom wall of the first rotating groove 11. The first arc-shaped block 314 is installed in the first arc-shaped groove 13. The end of the first swing body 312 away from the first rotating body 311 is located in the first notch 211 of the first connecting member 21. The first shaft 313 is installed in the second sliding groove 213, and the first shaft 313 can slide along the second sliding groove 213, while also being able to rotate axially around the first shaft 313, thereby achieving a rotating and sliding connection between the first swing arm 31 and the first connecting member 21. Specifically, the two first shafts 313 are respectively installed in the corresponding second slide grooves 213, and each first shaft 313 can slide along the corresponding second slide groove 213 and rotate around the axial direction of the first shaft 313.

[0177] When the first housing 210 rotates relative to the base 10, it drives the first connecting member 21 to rotate relative to the base 10, and through the first shaft 313, it drives the first swing body 312 to rotate relative to the base 10. This causes the first rotating body 311 to slide in an arc along the first rotating groove 11, and the first arc-shaped block 314 to slide in an arc along the first arc-shaped groove 13. Here, "the first rotating body 311 sliding in an arc along the first rotating groove 11" can be understood as the first rotating body 311 rotating around the axis of the first rotating groove 11. The "axis of the first rotating groove 11" is the straight line where the center of curvature of the first rotating groove 11 lies. Similarly, "the first arc-shaped block 314 sliding in an arc along the first arc-shaped groove 13" can be understood as the first arc-shaped block 314 rotating around the axis of the first arc-shaped groove 13. The "axis of the first arc-shaped groove 13" is the straight line where the center of curvature of the first arc-shaped groove 13 lies. When the first connecting member 21 rotates relative to the base 10, it can also drive the first shaft 313 to slide along the second slide groove 213, and at the same time enable the first shaft 313 to rotate around the axial direction of the first shaft 313, thereby realizing the rotational connection between the first swing arm 31 and the base 10, and the rotational and sliding connection between the first swing arm 31 and the first connecting member 21.

[0178] The second connecting member 22 and the third swing arm 32 are both installed on the negative X-axis side of the base 10, and the third swing arm 32 connects the base 10 and the second connecting member 22. The second connecting member 22 is fixedly connected to the second housing 220. The second rotating body 321 is installed in the second rotating groove 12, and the second arc-shaped block 324 is installed in the second arc-shaped groove 14. The end of the second swing body 322 away from the second rotating body 321 is located in the second notch 221 of the second connecting member 22. The second shaft 323 is installed in the fourth sliding groove 223, and the second shaft 323 can slide along the fourth sliding groove 223, while also being able to rotate axially around the second shaft 323, thereby achieving a rotating and sliding connection between the third swing arm 32 and the second connecting member 22. Specifically, two second shafts 323 are respectively installed in corresponding fourth sliding grooves 223, and each second shaft 323 can slide along its corresponding fourth sliding groove 223 and rotate axially around the second shaft 323.

[0179] When the second housing 220 rotates relative to the base 10, it drives the second connecting member 22 to rotate relative to the base 10, and through the second shaft 323, it drives the second swing body 322 to rotate relative to the base 10. This causes the second rotating body 321 to slide in an arc along the second rotating groove 12, and the second arc-shaped block 324 to slide in an arc along the second arc-shaped groove 14. When the second connecting member 22 rotates relative to the base 10, it can also drive the second shaft 323 to slide along the fourth sliding groove 223, and at the same time, it can cause the second shaft 323 to rotate around the axial direction of the second shaft 323, thereby realizing the rotational connection between the third swing arm 32 and the base 10, and the rotational and sliding connection between the third swing arm 32 and the second connecting member 22.

[0180] In this configuration, the rotation direction of the first connecting member 21 is opposite to that of the second connecting member 22, and the rotation direction of the first swing arm 31 is opposite to that of the third swing arm 32. For example, when the rotating shaft mechanism 100 switches from the unfolded state to the folded state, the first connecting member 21 and the first swing arm 31 rotate counterclockwise, while the second connecting member 22 and the third swing arm 32 rotate clockwise. When the rotating shaft mechanism 100 switches from the folded state to the unfolded state, the first connecting member 21 and the first swing arm 31 rotate clockwise, while the second connecting member 22 and the third swing arm 32 rotate counterclockwise.

[0181] Please see Figure 15 , Figure 15 yes Figure 6 A schematic diagram of the structure of the second swing arm 41 and the fourth swing arm 42 in the rotating shaft mechanism 100 shown.

[0182] The second swing arm 41 includes a first sliding body 411, a third bearing seat 414, a first sliding column 417, a second sliding column 418, and a third shaft 419. The third bearing seat 414 is provided with a third shaft hole 415. The third shaft hole 415 extends through the third bearing seat 414 along the Y direction. The first sliding body 411 includes a first sub-sliding body 412 and a second sub-sliding body 413. The first sub-sliding body 412 and the second sub-sliding body 413 are spaced apart along the Y direction and connected to the third bearing seat 414.

[0183] The first sliding column 417 and the second sliding column 418 extend in directions parallel to the Y direction. Both the first sliding column 417 and the second sliding column 418 are fixed to the first sub-sliding body 412 and protrude from the side of the first sub-sliding body 412, with the first sliding column 417 and the second sliding column 418 spaced apart. The first sliding column 417 and the second sliding column 418 are used for sliding and rotatably connecting with the first slide rail 315. In this embodiment, both the first sliding column 417 and the second sliding column 418 are cylindrical. In other embodiments, the first sliding column 417 and / or the second sliding column 418 may also be other irregularly shaped structures with an arc-shaped sliding surface.

[0184] In this embodiment, the third shaft 419 is cylindrical, and its axial direction is parallel to the Y direction. The third shaft 419 is fixed to the side of the second sub-slider 413 and is disposed opposite to the first sliding column 417 and the second sliding column 418. The third shaft 419 is used for rotatable and slidable connection with the first support member 51.

[0185] The fourth swing arm 42 is a mirror image symmetrical to the second swing arm 41. The fourth swing arm 42 includes a second sliding body 421, a fourth bearing seat 424, a third sliding column 427, a fourth sliding column 428, and a fourth shaft 429. The fourth bearing seat 424 has a fourth shaft hole 425. The fourth shaft hole 425 extends through the fourth bearing seat 424 along the Y direction. The second sliding body 421 includes a third sub-slider 422 and a fourth sub-slider 423. The third sub-slider 422 and the fourth sub-slider 423 are spaced apart along the Y direction and connected to the fourth bearing seat 424.

[0186] The extension directions of the third slide bar 427 and the fourth slide bar 428 are both parallel to the Y direction. Both the third slide bar 427 and the fourth slide bar 428 are fixed to the third sub-slide body 422 and protrude from the side of the third sub-slide body 422, and are spaced apart along the Z direction. The third slide bar 427 and the fourth slide bar 428 are used for sliding and rotatably connecting with the second slide rail 325. In this embodiment, both the third slide bar 427 and the fourth slide bar 428 are cylindrical. In other embodiments, the third slide bar 427 and / or the fourth slide bar 428 may also be other irregularly shaped structures with arc-shaped sliding surfaces.

[0187] In this embodiment, the fourth shaft 429 is cylindrical, and its axial direction is parallel to the Y direction. The fourth shaft 429 is fixed to the side of the fourth sub-slider 423 and is disposed opposite to the third sliding post 427 and the fourth sliding post 428. The fourth shaft 429 is used for rotatable and slidable connection with the second support member 52.

[0188] Please combine Figure 7 and Figure 16 , Figure 16 yes Figure 7 The schematic diagram of the cross-sectional structure of the rotating shaft mechanism 100 along the CC direction is shown.

[0189] The second swing arm 41 is connected between the base 10 and the first connecting member 21, and is arranged sequentially with the first swing arm 31 along the Y direction. The third shaft seat 414 faces the base 10, and the axis of the third shaft hole 415 coincides with or substantially coincides with the axis of the first shaft hole 15. The first rotating shaft 17 passes through the first shaft hole 15 and the third shaft hole 415. In this embodiment, the first rotating shaft 17 is fixedly connected to the base 10 and rotatably connected to the third shaft seat 414. In other embodiments, the first rotating shaft 17 may also be rotatably connected to the base 10 and fixedly connected to the third shaft seat 414. The first sliding body 411 is installed in the fifth sliding groove 214. The first sub-sliding body 412 is installed in the first sub-sliding groove 215, and the second sub-sliding body 413 is installed in the second sub-sliding groove 216. The first sliding column 417 and the second sliding column 418 face the first notch 211. The first sliding column 417 and the second sliding column 418 are located on opposite sides of the thickness direction of the first slide rail 315. That is, the first slide bar 417 and the second slide bar 418 clamp the first slide rail 315.

[0190] When the first connecting member 21 rotates relative to the base 10, it drives the first swing arm 31 and the second swing arm 41 to rotate simultaneously relative to the base 10. The second swing arm 41 rotates around the first rotating shaft 17, the first sub-sliding body 412 slides along the first sub-sliding groove 215, the second sub-sliding body 413 slides along the second sub-sliding groove 216, the first sliding column 417 and the second sliding column 418 slide along the first slide rail 315, and the first sliding column 417 rotates around the axis of the first sliding column 417, and the second sliding column 418 rotates around the axis of the second sliding column 418.

[0191] It should be noted that in this embodiment, the first sliding column 417 and the second sliding column 418 are spaced apart and staggered along the Z direction. In other embodiments, the first sliding column 417 and the second sliding column 418 may also be spaced apart and opposite to each other along the Z direction. In actual design, the positions of the first sliding column 417 and the second sliding column 418 can be appropriately adjusted according to the position and shape of the first slide rail 315. Here, the specific positions of the first sliding column 417 and the second sliding column 418 are not limited, as long as the first sliding column 417 and the second sliding column 418 can slide and rotate along the first slide rail 315.

[0192] In this embodiment, by clamping the first slide rail 315 between the first slide post 417 and the second slide post 418, and by having the first slide post 417 and the second slide post 418 together limit the first slide rail 315, the first slide post 417 and the second slide post 418 can slide along the extension direction of the first slide rail 315 without disengaging from the first slide rail 315, that is, without deviating from the predetermined motion trajectory, thereby improving the rotational stability of the rotating shaft mechanism 100.

[0193] The fourth swing arm 42 is connected between the base 10 and the second connecting member 22, and is arranged along the Y direction with the third swing arm 32. The fourth shaft seat 424 faces the base 10, and the axis of the fourth shaft hole 425 coincides with or substantially coincides with the axis of the second shaft hole 16. The second rotating shaft 18 passes through the second shaft hole 16 and the fourth shaft hole 425. In this embodiment, the second rotating shaft 18 is fixedly connected to the base 10 and rotatably connected to the fourth shaft seat 424. The third sub-slider 422 of the second sliding body 421 is installed in the third sub-slider groove 225, and the fourth sub-slider 423 is installed in the fourth sub-slider groove 226. The second sliding column 418 faces the second notch 221. The third sliding column 427 and the fourth sliding column 428 are located on opposite sides of the thickness direction of the second slide rail 325. That is, the third sliding column 427 and the fourth sliding column 428 clamp the second slide rail 325.

[0194] When the second connecting member 22 rotates relative to the base 10, it drives the third swing arm 32 and the fourth swing arm 42 to rotate simultaneously relative to the base 10. The fourth swing arm 42 rotates around the second rotating shaft 18, the third sub-sliding body 422 slides along the third sub-sliding groove 225, the fourth sub-sliding body 423 slides along the fourth sub-sliding groove 226, and the third sliding column 427 and the fourth sliding column 428 slide along the second slide rail 325. At the same time, the third sliding column 427 rotates around its axial direction, and the fourth sliding column 428 rotates around its axial direction.

[0195] It should be noted that in this embodiment, the third slide bar 427 and the fourth slide bar 428 are spaced apart and staggered along the Z direction. In other embodiments, the third slide bar 427 and the fourth slide bar 428 may also be spaced apart and opposite to each other along the Z direction. In actual design, the positions of the third slide bar 427 and the fourth slide bar 428 can be appropriately adjusted according to the position and shape of the second slide rail 325. Here, the specific positions of the third slide bar 427 and the fourth slide bar 428 are not limited, as long as they can slide and rotate along the second slide rail 325.

[0196] In this embodiment, by clamping the second slide rail 325 between the third slide post 427 and the fourth slide post 428, and by having the third slide post 427 and the fourth slide post 428 jointly limit the second slide rail 325, the third slide post 427 and the fourth slide post 428 can slide along the extension direction of the second slide rail 325 without disengaging from the second slide rail 325, that is, without deviating from the predetermined motion trajectory, thereby further improving the rotational stability of the rotating shaft mechanism 100.

[0197] like Figure 14 and Figure 16As shown, when the rotating shaft mechanism 100 is in the unfolded state, the first connecting member 21 and the second connecting member 22 are unfolded relative to the base 10, the first swing arm 31 and the third swing arm 32 are unfolded relative to the base 10, and the second swing arm 41 and the fourth swing arm 42 are unfolded relative to the base 10. The first shaft 313 is located at one end of the second slide groove 213 near the first surface 201, and the second shaft 323 is located at one end of the fourth slide groove 223 near the third surface 205. That is, the first shaft 313 is located at the first position 217 of the second slide groove 213, and the second shaft 323 is located at the third position 227 of the fourth slide groove 223. The first sliding column 417 and the second sliding column 418 are located at the first end 318 of the first section 316 of the first slide rail 315, or the first sliding column 417 and the second sliding column 418 are close to the first end 318. The third slide bar 427 and the fourth slide bar 428 are located in the third section 326 of the second slide rail 325 and at the third end 328 of the third section 326, or the third slide bar 427 and the fourth slide bar 428 are close to the third end 328.

[0198] Please combine Figure 17 and Figure 18 , Figure 17 yes Figure 14 The schematic diagram shows a cross-sectional view of the rotating shaft mechanism 100 in its folded state. Figure 18 yes Figure 16 The diagram shows a cross-sectional view of the rotating shaft mechanism 100 in its folded state. Figure 17 The dashed lines in the diagram represent the outlines of the first connecting member 21 and the first swing arm 31 when the rotating shaft mechanism 100 is in the unfolded state.

[0199] When the rotating shaft mechanism 100 rotates from the unfolded state to the folded state, the first connecting member 21 and the second connecting member 22 rotate toward each other. That is, the first connecting member 21 rotates counterclockwise, and the second connecting member 22 rotates clockwise. The counterclockwise rotation of the first connecting member 21 causes the first swing arm 31 and the second swing arm 41 to rotate counterclockwise simultaneously. When the first swing arm 31 rotates counterclockwise, the first rotating body 311 slides along the first rotating groove 11 toward the first side surface 103. At the same time, the first swing arm 31 moves relative to the first connecting member 21 in the opposite direction to the rotation direction of the first connecting member 21. Specifically, the first swing arm 31 can move relative to the first connecting member 21 in a direction completely opposite to the rotation direction of the first connecting member 21, that is, the first swing arm 31 rotates relative to the first connecting member 21 in a clockwise direction. Alternatively, the first swing arm 31 has a component in the opposite direction to the rotation direction of the first connecting member 21 relative to the rotation direction of the first connecting member 21.

[0200] like Figure 17 and Figure 18As shown, when the first swing arm 31 rotates counterclockwise, the first shaft 313 slides along the second slide groove 213 toward the second surface 202 and the second side surface 204. That is, the first shaft 313 slides along the second slide groove 213 from the first position 217 toward the second position 218. In other words, the first shaft 313 moves along the second slide groove 213 toward the outside of the rotating shaft mechanism 100.

[0201] When the second swing arm 41 rotates counterclockwise, it rotates counterclockwise around the first pivot 17. The first sliding body 411 slides along the fifth slide groove 214 toward the first side 203. The first sliding column 417 and the second sliding column 418 slide along the first section 316 toward the second section 317, and then slide along the second section 317 toward the second end 319. That is, the first sliding column 417 and the second sliding column 418 slide along the first slide rail 315 from the first end 318 toward the second end 319. At the same time, the first sliding column 417 rotates around its axial direction, and the second sliding column 418 rotates around its axial direction.

[0202] The second connecting member 22 rotates clockwise, causing the third swing arm 32 and the fourth swing arm 42 to rotate clockwise simultaneously. When the third swing arm 32 rotates clockwise, the second rotating body 321 slides along the second rotating groove 12 toward the second side surface 104. Simultaneously, the third swing arm 32 moves relative to the second connecting member 22 in the opposite direction to its rotation. Specifically, the third swing arm 32 can move relative to the second connecting member 22 in a direction completely opposite to its rotation, that is, the third swing arm 32 rotates clockwise relative to the second connecting member 22. Alternatively, the third swing arm 32 may have a component in the opposite direction to the rotation of the second connecting member 22 relative to its rotation.

[0203] like Figure 17 and Figure 18 As shown, when the third swing arm 32 rotates counterclockwise, the second shaft 323 slides along the fourth slide groove 223 toward the fourth surface 206 and the fourth side surface 208. That is, the second shaft 323 slides along the fourth slide groove 223 from the third position 227 toward the fourth position 228. In other words, the second shaft 323 moves along the fourth slide groove 223 toward the outside of the rotating shaft mechanism 100.

[0204] When the fourth swing arm 42 rotates clockwise, simultaneously with its rotation around the second pivot 18, the second sliding body 421 slides along the seventh slide groove 224 toward the third side surface 207, and the third sliding column 427 and the fourth sliding column 428 slide along the third segment 326 toward the fourth segment 327, and then along the fourth segment 327 toward the fourth end 329. That is, the third sliding column 427 and the fourth sliding column 428 slide along the second slide rail 325 from the third end 328 toward the fourth end 329. At the same time, the third sliding column 427 rotates around its axial direction, and the fourth sliding column 428 rotates around its axial direction.

[0205] like Figure 16 As shown, when the rotating shaft mechanism 100 is in the folded state, the first connecting member 21 and the second connecting member 22 are folded relative to each other, the first swing arm 31 and the third swing arm 32 are folded relative to each other, the first shaft 313 is located at the end of the second slide groove 213 near the second surface 202, and the second shaft 323 is located at the end of the fourth slide groove 223 near the fourth surface 206. That is, the first shaft 313 is located at the second position 218, and the second shaft 323 is located at the fourth position 228. At the same time, when the rotating shaft mechanism 100 is in the folded state, the second swing arm 41 and the fourth swing arm 42 are folded relative to each other. The first sliding column 417 and the second sliding column 418 are located at the second end 319 of the second section 317 of the first slide rail 315, or the first sliding column 417 and the second sliding column 418 are close to the second end 319. The third slide bar 427 and the fourth slide bar 428 are located in the fourth section 327 of the second slide rail 325 and at the fourth end 329 of the fourth section 327, or the third slide bar 427 and the fourth slide bar 428 are close to the fourth end 329.

[0206] like Figure 17 As shown, the tangent of the second groove 213 at the second position 218 is parallel or approximately parallel to the width direction of the first connector 21. When the pivot mechanism 100 is in the folded state, the force exerted by the inner wall of the second groove 213 on the first shaft 313 is parallel or approximately parallel to the Z direction, thereby preventing the first shaft 313 from sliding toward the first position 217 when the pivot mechanism 100 falls or is impacted, thus improving the drop resistance of the pivot mechanism 100 and the foldable electronic device 500.

[0207] The tangent of the fourth slide groove 223 at the fourth position 228 is parallel or approximately parallel to the width direction of the second connector 22. When the pivot mechanism 100 is in the folded state, the force exerted by the inner wall of the fourth slide groove 223 on the second shaft 323 is parallel or approximately parallel to the Z direction, thereby preventing the second shaft 323 from sliding toward the third position 227 when the pivot mechanism 100 is dropped or impacted, and further improving the drop resistance of the pivot mechanism 100 and the foldable electronic device 500.

[0208] To further understand this embodiment, please refer to the following: Figure 19 , Figure 19 yes Figure 7 A simplified partial view of the rotating shaft mechanism 100 shown.

[0209] like Figure 19 As shown, the base 10, the first swing arm 31, the first connecting member 21, and the second swing arm 41 can be understood as a four-bar linkage. Specifically, the first swing arm 31 is rotatably connected to the base 10, forming a first lower pair. The first swing arm 31 is slidably and rotatably connected to the first connecting member 21, forming a first higher pair. The first connecting member 21 is slidably connected to the second swing arm 41, forming a second lower pair. The second swing arm 41 is rotatably connected to the base 10, forming a third lower pair. The first swing arm 31 and the second swing arm 41 are slidably and rotatably connected, forming a second higher pair.

[0210] According to the formula for calculating the degrees of freedom of a link: F = 3n - 2L - 1h. Where F is the degree of freedom, n is the number of moving links, L is the number of lower pairs, and h is the number of higher pairs. In this embodiment, the number of moving links n is 3, the number of lower pairs L is 3, and the number of higher pairs h is 2. Therefore, F is 1. That is, Figure 19 The four-bar linkage shown has 1 degree of freedom. That is to say, Figure 19 The four-bar linkage shown has only one form of motion. In other words, Figure 7 During the rotation of the rotating shaft mechanism 100, the movement patterns of the first swing arm 31, the first connecting member 21, and the second swing arm 41 are fixed and there is only one movement pattern. This improves the stability and reliability of the rotation of the rotating shaft mechanism 100. It can be understood that during the rotation of the rotating shaft mechanism 100 from the unfolded state to the folded state, the first shaft 313 will slide along the second slide groove 213 from the first position 217 to the second position 218, and at the same time, the first slide column 417 and the second slide column 418 will slide along the first slide rail 315 from the first end 318 to the second end 319.

[0211] Similarly, the base 10, the third swing arm 32, the second connecting member 22, and the fourth swing arm 42 can also be understood as a four-bar linkage, with one degree of freedom. That is, during the rotation of the shaft mechanism 100, the motion patterns of the third swing arm 32, the second connecting member 22, and the fourth swing arm 42 are fixed and only have one motion pattern. This further improves the rotational stability and reliability of the shaft mechanism 100. It is understood that during the rotation of the shaft mechanism 100 from the unfolded state to the folded state, the second shaft 323 slides along the fourth slide groove 223 from the third position 227 to the fourth position 228, while the third slide column 427 and the fourth slide column 428 slide along the second slide rail 325 from the third end 328 to the fourth end 329.

[0212] Please see Figure 17 During the rotation of the pivot mechanism 100 from the unfolded state to the folded state, the rotation angle of the first connecting member 21 and the second swing arm 41 is 90 degrees, or approximately 90 degrees, and the rotation angle of the first swing arm 31 is A1. The included angle A1 is 90° to 100°. That is, during the rotation of the pivot mechanism 100 from the unfolded state to the folded state, the rotation angle of the first swing arm 31 relative to the base 10 is 90° to 100°. For example, the included angle A1 is 93° to 95°.

[0213] During the rotation of the pivot mechanism 100 from the unfolded state to the folded state, the second connecting member 22 and the fourth swing arm 42 rotate at an angle of 90 degrees, or approximately 90 degrees, while the third swing arm 32 rotates at an angle of 90° to 100°. That is, during the rotation of the pivot mechanism 100 from the unfolded state to the folded state, the third swing arm 32 rotates at an angle of 90° to 100° relative to the base 10. For example, during the rotation of the pivot mechanism 100 from the unfolded state to the folded state, the third swing arm 32 rotates at an angle of 93° to 95° relative to the base 10.

[0214] In this embodiment, by providing a second sliding groove 213 on the first connecting member 21, the first swing arm 31 is rotatably and slidably connected to the first connecting member 21. At the same time, the first swing arm 31 is rotatably and slidably connected to the second swing arm 41. When the rotating shaft mechanism 100 rotates from the unfolded state to the folded state, the first swing arm 31 rotates relative to the base 10 and also rotates and slides relative to the first connecting member 21. Furthermore, the first swing arm 31 moves relative to the first connecting member 21 in the opposite direction to the rotation direction of the first connecting member 21, thereby reducing the rotation angle of the first swing arm 31 relative to the base 10, that is, reducing the included angle A1.

[0215] To understand more clearly Figure 17 Please refer to the illustrated embodiments as well. Figure 20 , Figure 20 This is a cross-sectional structural schematic diagram of a rotating shaft mechanism 100 provided in another embodiment of this application. The dashed lines represent the outlines of the first swing arm 31 and the first connecting member 21 when the rotating shaft mechanism 100 is in the unfolded state.

[0216] Figure 20 The embodiments shown are the same as Figure 17 The difference in the illustrated embodiment is that, Figure 20In the illustrated embodiment, the first swing arm 31 is rotatably connected to the first connecting member 21. During the rotation of the rotating shaft mechanism 100 from the unfolded state to the folded state, the first swing arm 31 slides along the first rotating groove 11, and simultaneously rotates around the first shaft 313. During the rotation of the rotating shaft mechanism 100 from the unfolded state to the folded state, the rotation angle of the first connecting member 21 is 90 degrees, or approximately 90 degrees, and the rotation angle of the first swing arm 31 is A2.

[0217] Figure 17 In the illustrated embodiment, by rotating and sliding the first swing arm 31 to the first connecting member 21, during the rotation of the shaft mechanism 100 from the unfolded state to the folded state, the first shaft 313 slides along the second groove 213 toward the second surface 202, that is, it moves from the first position 217 toward the second position 218. In other words, the first shaft 313 moves in the opposite direction to the rotation direction of the first connecting member 21 relative to it; in other words, the first shaft 313 slides toward the outside of the shaft mechanism 100, thereby reducing the rotation angle A1 of the first swing arm 31 relative to the base 10. That is, the rotation angle A1 is less than A2. Figure 17 In the embodiment shown, during the process of rotating the pivot mechanism 100 from the unfolded state to the folded state, the rotation angle of the first swing arm 31 relative to the base 10 is smaller, which can avoid the first swing arm 31 from squeezing the display screen 300, thereby improving the display effect of the display screen 300 and extending the service life of the display screen 300.

[0218] when Figure 17 The size of the first rotating groove 11 in the embodiment shown is the same as Figure 20 When the size of the first rotating groove 11 in the illustrated embodiment is consistent, Figure 17 In the illustrated embodiment, the overlap between the first swing arm 31 and the base 10 is greater when the pivot mechanism 100 is in the folded state. That is, Figure 17 In the illustrated embodiment, by rotating and sliding the first swing arm 31 and the first connecting member 21, the overlap between the first swing arm 31 and the base 10 when the pivot mechanism 100 is in the folded state can be increased, thereby improving the connection stability between the first swing arm 31 and the base 10. This makes it less likely for the first swing arm 31 to detach from the base 10 when the pivot mechanism 100 is dropped or impacted. Furthermore, it can improve the support of the first swing arm 31 for the pivot mechanism 100, thereby reducing the deformation and movement of the base 10 towards the pivot mechanism 100 when the pivot mechanism 100 is dropped or impacted, and thus improving the drop resistance of the pivot mechanism 100.

[0219] at the same time, Figure 17In the illustrated embodiment, by rotating and sliding the first swing arm 31 and the first connecting member 21, the overlap between the first swing arm 31 and the base 10 when the rotating shaft mechanism 100 is in the folded state is increased. This also improves the stability of the rotating shaft mechanism 100 during the opening and closing process, enhances the guiding effect of the first rotating groove 11 on the first swing arm 31, and reduces or even avoids bending and jamming of the rotating shaft mechanism 100 during the opening and closing process, thereby improving the smoothness of the opening and closing process of the rotating shaft mechanism 100 and enhancing the user experience.

[0220] Please continue reading. Figure 17 and Figure 20 ,when Figure 17 In the embodiment shown, the overlap between the first swing arm 31 and the base 10 when the rotating shaft mechanism 100 is in the folded state is related to... Figure 20 In the embodiment shown, when the pivot mechanism 100 is in the folded state, the overlap between the first swing arm 31 and the base 10 is consistent. Figure 17 In the embodiment shown, the diameter of the first rotating groove 11 can be designed to be smaller, thereby reducing the thickness of the base 10 and the thickness of the rotating shaft mechanism 100, which is beneficial to achieving the thinning and lightening of the foldable electronic device 500.

[0221] Similarly, such as Figure 17 As shown, in this embodiment, by providing a fourth sliding groove 223 on the second connector 22, the third swing arm 32 is rotatably and slidably connected to the second connector 22. At the same time, the third swing arm 32 is rotatably and slidably connected to the fourth swing arm 42. When the rotating shaft mechanism 100 rotates from the unfolded state to the folded state, the third swing arm 32 rotates relative to the base 10 and also rotates and slides relative to the second connector 22. Furthermore, the third swing arm 32 moves relative to the second connector 22 in the opposite direction to the rotation direction of the second connector 22. This reduces the rotation angle of the third swing arm 32 relative to the base 10, thereby preventing the third swing arm 32 from squeezing the display screen 300 when the rotating shaft mechanism 100 is in the folded state, improving the display effect of the display screen 300, and extending the service life of the display screen 300.

[0222] Meanwhile, in this embodiment, by rotating and slidingly connecting the third swing arm 32 to the second connecting member 22, and rotating and slidingly connecting the third swing arm 32 to the fourth swing arm 42, the rotation angle of the third swing arm 32 relative to the base 10 during the rotation of the pivot mechanism 100 from the unfolded state to the folded state can be reduced, thereby increasing the overlap between the third swing arm 32 and the base 10 when the pivot mechanism 100 is in the folded state. When the overlap between the third swing arm 32 and the base 10 is increased when the pivot mechanism 100 is in the folded state, the third swing arm 32 is less likely to detach from the base 10 when the pivot mechanism 100 is dropped or impacted. Furthermore, it can improve the support of the third swing arm 32 for the pivot mechanism 100, thereby reducing the deformation and movement of the base 10 towards the pivot mechanism 100 when the pivot mechanism 100 is dropped or impacted, and thus improving the drop resistance of the pivot mechanism 100. Meanwhile, when the pivot mechanism 100 is in a folded state, the increased overlap between the third swing arm 32 and the base 10 can improve the stability of the pivot mechanism 100 during the opening and closing process, and can reduce or even avoid bending and jamming of the pivot mechanism 100 during the opening and closing process, thereby improving the smoothness of the opening and closing process of the pivot mechanism 100 and enhancing the user experience.

[0223] like Figure 16 and Figure 17 As shown, it can be understood that during the rotation of the pivot mechanism 100, the rotation angle of the first swing arm 31 relative to the base 10 is different from the rotation angle of the second swing arm 41 relative to the base 10. For example, during the rotation of the pivot mechanism 100 from the unfolded state to the folded state, the rotation angle of the first swing arm 31 is greater than or equal to the rotation angle of the second swing arm 41. In this embodiment, by offsetting the first end 318 and the second end 319 of the first slide rail 315 along the X direction in the Z direction, and by allowing the first swing arm 31 to slide relative to the second swing arm 41 along the direction from the first end 318 to the second end 319 during the rotation of the pivot mechanism 100, the rotation angles of the first swing arm 31 and the second swing arm 41 are different, thereby compensating for the angle difference between the first swing arm 31 and the second swing arm 41 and improving the smoothness and stability of the rotation of the pivot mechanism 100.

[0224] Furthermore, in this embodiment, by setting the radius of curvature of the first segment 316 of the first slide rail 315 to be smaller than the radius of curvature of the second segment 317, the sliding speed of the first slide column 417 and the second slide column 418 along the first segment 316 is less than the sliding speed of the first slide column 417 and the second slide column 418 along the second segment 317. This results in a slower initial rotation speed of the pivot mechanism 100 when it rotates from the unfolded state to the folded state. In other words, the pivot mechanism 100 rotates slowly during the initial stage of rotating from the unfolded state to the folded state. This avoids pulling on the display screen 300, thus preventing damage or warping of the display screen 300 and extending its service life. Simultaneously, it also prevents the pivot mechanism 100 from jamming during rotation, improving the smoothness of the pivot mechanism 100 during rotation.

[0225] Meanwhile, in this embodiment, by setting the radius of curvature of the second segment 317 to be smaller than that of the first segment 316, the second segment 317 accelerates the sliding of the first slide column 417 and the second slide column 418 during the process of the rotating shaft mechanism 100 rotating from the unfolded state to the folded state. That is, the sliding speed of the first slide column 417 and the second slide column 418 along the second segment 317 is greater than the sliding speed of the first slide column 417 and the second slide column 418 along the first segment 316. This results in a faster rotation speed at the end of the rotation of the rotating shaft mechanism 100 to the folded state, thereby reducing the time it takes for the rotating shaft mechanism 100 to rotate from the unfolded state to the folded state and improving the user experience.

[0226] Furthermore, in this embodiment, by extending the first slide rail 315 from the first swing arm 31, the movement trajectory of the first slide column 417 and the second slide column 418 can be restricted. The structure is simple and can simplify the manufacturing process of the rotating shaft mechanism 100. At the same time, in this embodiment, there is no need to set an additional slide groove, and therefore no need to increase the wall thickness for setting the slide groove, thereby reducing the thickness of the first swing arm 31 and saving space.

[0227] Similarly, in this embodiment, by offsetting the third end 328 and the fourth end 329 of the second slide rail 325 along the X and Z directions, and during the rotation of the rotating shaft mechanism 100, the third swing arm 32 can slide relative to the fourth swing arm 42 from the third end 328 to the fourth end 329, thereby making the rotation angles of the third swing arm 32 and the fourth swing arm 42 different, which can compensate for the angle difference between the third swing arm 32 and the fourth swing arm 42, so as to further improve the smoothness and stability of the rotation of the rotating shaft mechanism 100.

[0228] Furthermore, in this embodiment, by setting the radius of curvature of the third segment 326 of the second slide rail 325 to be greater than the radius of curvature of the fourth segment 327, the sliding speed of the third slide column 427 and the fourth slide column 428 along the third segment 326 is less than the sliding speed along the fourth segment 327. This results in a slower initial rotation speed of the pivot mechanism 100 when it rotates from the unfolded state to the folded state. This further avoids damage to the display screen 300 or arching, extends the service life of the display screen 300, and also further avoids jamming of the pivot mechanism 100 during rotation, further improving the smoothness of the pivot mechanism 100 during rotation. Meanwhile, by setting the radius of curvature of the third segment 326 of the second slide rail 325 to be greater than the radius of curvature of the fourth segment 327, the rotation speed of the pivot mechanism 100 at the end of the rotation from the unfolded state to the folded state can be increased, thereby reducing the time it takes for the pivot mechanism 100 to rotate from the unfolded state to the folded state, improving the user experience. At the same time, the initial rotation speed of the pivot mechanism 100 when rotating to the folded state can be reduced to avoid pulling on the display screen 300, thereby avoiding damage to the display screen 300 and extending the service life of the display screen 300.

[0229] like Figure 14 , Figures 16 to 18 As shown, when the rotating shaft mechanism 100 rotates from the folded state to the unfolded state, the first connecting member 21 and the second connecting member 22 rotate in opposite directions. That is, the first connecting member 21 rotates clockwise, and the second connecting member 22 rotates counterclockwise. When the first connecting member 21 rotates clockwise, it drives the first swing arm 31 and the second swing arm 41 to rotate clockwise simultaneously. When the first swing arm 31 rotates clockwise, the first rotating body 311 slides into the first rotating groove 11. At the same time, the first shaft 313 slides along the second sliding groove 213 from the second position 218 towards the first position 217. When the second swing arm 41 rotates clockwise, the first sliding body 411 slides along the fifth sliding groove 214 toward the second side 204. The first sliding column 417 and the second sliding column 418 slide from the second end 319 along the second section 317 toward the first section 316, and then slide along the first section 316 toward the first end 318. At the same time, the first sliding column 417 rotates around the axis of the first sliding column 417, and the second sliding column 418 rotates around the axis of the second sliding column 418.

[0230] The second connecting member 22 rotates counterclockwise, causing the third swing arm 32 and the fourth swing arm 42 to rotate counterclockwise simultaneously. When the third swing arm 32 rotates counterclockwise, the second rotating body 321 slides into the second rotating groove 12. At the same time, the second shaft 323 slides along the fourth slide groove 223 from the fourth position 228 towards the third position 227. When the fourth swing arm 42 rotates counterclockwise, the second sliding body 421 slides along the seventh slide groove 224 towards the fourth side 208, and the third sliding column 427 and the fourth sliding column 428 slide from the fourth end 329 along the fourth segment 327 towards the third segment 326, and then along the third segment 326 towards the third end 328. At the same time, the third sliding column 427 rotates around its axial direction, and the fourth sliding column 428 rotates around its axial direction.

[0231] In this embodiment, by providing a first slide rail 315 on the first swing arm 31 and a first slide column 417 and a second slide column 418 on the second swing arm 41, and by providing the first slide column 417 and the second slide column 418 to slide and rotate relative to the first swing arm 31 along the first slide rail 315, the first swing arm 31 and the second swing arm 41 are rotated and slidably connected, thereby improving the rotational stability of the first swing arm 31 and the second swing arm 41, and thus improving the rotational stability of the rotating shaft mechanism 100.

[0232] In one embodiment, the positions of the first sliding column 417 and the second sliding column 418 can be interchanged with the positions of the first slide rail 315. That is, the first swing arm 31 is provided with a first sliding column and a second sliding column. The structure of the first sliding column is similar to... Figure 15 The structure of the first sliding post 417 in the illustrated embodiment is the same as or similar to that of the second sliding post. Figure 15 The structure of the second sliding column 418 in the illustrated embodiment is the same as or similar to that of the second sliding column. In this embodiment, the first and second sliding columns are fixed to the side of the first swing arm 31 and face the second swing arm 41. In this embodiment, the second swing arm 41 is provided with a first slide rail. The structure of the first slide rail is similar to... Figure 13 The structure of the first slide rail 315 in the illustrated embodiment is the same or similar. The first and second slide columns of the first swing arm 31 clamp the first slide rail of the second swing arm 41. When the rotating shaft mechanism 100 rotates, the first and second slide columns slide and rotate along the first slide rail.

[0233] In one embodiment, the positions of the third sliding column 427 and the fourth sliding column 428 can be interchanged with the position of the second slide rail 325. That is, the third swing arm 32 is provided with a third sliding column and a fourth sliding column. The structure of the third sliding column is similar to... Figure 15 The structure of the third sliding post 427 in the illustrated embodiment is the same as or similar to that of the fourth sliding post. Figure 15The structure of the fourth sliding column 428 in the illustrated embodiment is the same as or similar to that of the fourth sliding column 428. In this embodiment, the third and fourth sliding columns are fixed to the side of the third swing arm 32 and face the fourth swing arm 42. In this embodiment, the fourth swing arm 42 is provided with a second slide rail. The structure of the second slide rail is similar to... Figure 13 The structure of the second slide rail 325 in the illustrated embodiment is the same as or similar to that of the second slide rail. The third slide post and the fourth slide post of the third swing arm 32 clamp the second slide rail of the fourth swing arm 42. When the rotating shaft mechanism 100 rotates, the third slide post and the fourth slide post slide and rotate along the second slide rail.

[0234] Please see Figure 21 , Figure 21 yes Figure 6 A schematic diagram of the structure of the first support member 51 and the second support member 52 in the rotating shaft mechanism 100 shown.

[0235] Both the first support member 51 and the second support member 52 are elongated structures. The back of the first support member 51 is provided with a first sliding groove 511 and a first slider 512. The extension direction of the first sliding groove 511 intersects both the Z-direction and the X-direction. In this embodiment, the first sliding groove 511 has an arc-shaped structure, and the center of the arc is located on one side of the positive Z-axis direction of the first sliding groove 511. In other embodiments, the first sliding groove 511 has an arc-shaped structure, and the center of the arc is located on one side of the negative Z-axis direction of the first sliding groove 511; alternatively, the first sliding groove 511 may also be a straight line.

[0236] The first sliding groove 511 is used for rotatable and slidable connection with the second swing arm 41. In this embodiment, there are multiple first sliding grooves 511. The multiple first sliding grooves 511 are spaced apart along the Y direction. For example, there are three first sliding grooves 511. The three first sliding grooves 511 are arranged sequentially spaced apart along the Y direction. The three first sliding grooves 511 are respectively connected to the second swing arm 41 of the first rotating structure 3, the second swing arm 41A of the second rotating structure 3A, and the second swing arm 41B of the third rotating structure 3B to improve the rotational stability of the first support member 51.

[0237] The first slider 512 is an arc-shaped slider. Furthermore, the shape of the first slider 512 matches the shape of the sixth groove 219. The first slider 512 is located on the back of the first support member 51. The first slider 512 is used for rotatable connection with the first connecting member 21. In this embodiment, there are three first sliders 512. The three first sliders 512 are arranged sequentially at intervals along the Y direction. The three first sliders 512 are respectively connected to the first connecting member 21 of the first rotating structure 3, the first connecting member 21 of the second rotating structure 3A, and the first connecting member 21 of the third rotating structure 3B, to further improve the rotational stability of the first support member 51.

[0238] Please combine Figure 22 and Figure 23 , Figure 22 yes Figure 5 A partial structural diagram of the rotating shaft mechanism 100. Figure 23 yes Figure 5 A partial structural diagram of the rotating shaft mechanism 100.

[0239] The first support member 51 and the first connecting members 21, 21A, and 21B are stacked along the Z direction, with the back of the first support member 51 facing the first connecting member 21 and the second swing arm 41. Multiple first sliding grooves 511 are correspondingly arranged with the third shafts 419 of the multiple second swing arms 41. Each third shaft 419 is installed in its corresponding first sliding groove 511 and can slide along the first sliding groove 511 while rotating around its axial direction, thus achieving a rotatable and sliding connection between the first support member 51 and the second swing arm 41. Multiple first sliders 512 are correspondingly arranged with the sixth sliding grooves 219 of the multiple first connecting members 21. Each first slider 512 is installed in its corresponding sixth sliding groove 219 and can slide in an arc along the sixth sliding groove 219, thus achieving a rotatable connection between the first support member 51 and the first connecting member 21.

[0240] like Figures 21 to 23 As shown, the back of the second support member 52 is provided with a second sliding groove 521 and a second slider 522. The extending direction of the second sliding groove 521 intersects both the Z-direction and the X-direction. In this embodiment, the second sliding groove 521 has an arc-shaped structure, and the center of the arc is located on one side of the positive Z-axis direction of the second sliding groove 521. In other embodiments, the second sliding groove 521 has an arc-shaped structure, and the center of the arc is located on one side of the negative Z-axis direction of the second sliding groove 521; alternatively, the second sliding groove 521 may also be a straight line.

[0241] The second sliding groove 521 is used for rotatable and slidable connection with the fourth swing arm 42. In this embodiment, there are multiple second sliding grooves 521. The multiple second sliding grooves 521 are spaced apart along the Y direction. For example, there are three second sliding grooves 521. The three second sliding grooves 521 are sequentially spaced apart along the Y direction. The three second sliding grooves 521 are respectively connected to the fourth swing arm 42 of the second rotating structure 3A, the fourth swing arm 42A of the second rotating structure 3A, and the fourth swing arm 42B of the third rotating structure 3B to improve the rotational stability of the second support member 52.

[0242] The second slider 522 is an arc-shaped slider. Furthermore, the shape of the second slider 522 matches the shape of the eighth groove 229. The second slider 522 is located on the back side of the second support member 52. The second slider 522 is used for rotatable connection with the second connecting member 22. In this embodiment, there are three second sliders 522. The three second sliders 522 are arranged sequentially at intervals along the Y direction. The three second sliders 522 are respectively connected to the second connecting member 22 of the second rotating structure 3A, the second connecting member 22 of the second rotating structure 3A, and the second connecting member 22 of the third rotating structure 3B, to further improve the rotational stability of the second support member 52.

[0243] The second support member 52 and the second connecting members 22, 22A, and 22B are stacked along the Z direction, with the back of the second support member 52 facing the second connecting member 22 and the fourth swing arm 42. Multiple second sliding grooves 521 are correspondingly arranged with the fourth shafts 429 of the multiple fourth swing arms 42. Each fourth shaft 429 is installed in its corresponding second sliding groove 521 and can slide along the second sliding groove 521 while rotating around its axial direction, thus achieving a rotatable and slidable connection between the second support member 52 and the fourth swing arm 42. Multiple second sliders 522 are correspondingly arranged with the eighth sliding grooves 229 of the multiple second connecting members 22. Each second slider 522 is installed in its corresponding eighth sliding groove 229 and can slide in an arc along the eighth sliding groove 229, thus achieving a rotatable connection between the second support member 52 and the second connecting member 22.

[0244] When the hinge mechanism 100 is in the unfolded state, the top surfaces of the first support member 51, the second support member 52, and the base 10 are flush or nearly flush. The display screen 300 is located on the same side of the first support member 51, the second support member 52, and the base 10. When the hinge mechanism 100 is in the unfolded state, the first support member 51, the second support member 52, and the base 10 jointly support the bendable portion 330 of the display screen 300. In this embodiment, by making the top surface of the first support member 51 flush with the top surface of the second support member 52 when the hinge mechanism 100 is in the unfolded state, the support performance for the display screen 300 can be improved, and the flatness of the display screen 300 when the foldable electronic device 500 is in the unfolded state can be improved.

[0245] Please refer to the following: Figure 24 and Figure 25 , Figure 24 yes Figure 22 A schematic diagram of the rotating shaft mechanism 100 in its folded state. Figure 25 yes Figure 23 A schematic diagram of the rotating shaft mechanism 100 in a folded state.

[0246] During the rotation of the pivot mechanism 100 from the unfolded state to the folded state, the first connecting member 21 and the second connecting member 22 rotate toward each other, thereby causing the second swing arm 41 and the fourth swing arm 42 to rotate toward each other, and the first support member 51 and the second support member 52 to rotate toward each other, thus causing the bendable part of the display screen 300 to bend. When the first connecting member 21, the second swing arm 41, and the first support member 51 rotate, the third shaft 419 slides along the first sliding groove 511 toward the base 10, and at the same time, the third shaft 419 rotates around its axis, causing the first slider 512 to slide in an arc along the sixth sliding groove 219 toward the direction away from the base 10. When the second connecting member 22, the fourth swing arm 42, and the second support member 52 rotate, the fourth shaft 429 slides along the second sliding groove 521 toward the base 10, and at the same time, the fourth shaft 429 rotates around its axis, causing the second slider 522 to slide in an arc along the eighth sliding groove 229 toward the direction away from the base 10.

[0247] like Figure 24 and Figure 25 As shown, when the pivot mechanism 100 is in the folded state, the first connecting member 21 and the second connecting member 22 are parallel and opposite to each other along the X direction. The first support member 51 and the second support member 52 are opposite to each other along the width direction of the base, and the first support member 51 and the second support member 52 are set at an angle. That is, the angle between the first support member 51 and the second support member 52 is greater than 0 degrees. The distance between the first support member 51 and the second support member 52 gradually increases towards the base 10, thereby forming a teardrop-shaped receiving space between the first support member 51, the second support member 52 and the base 10. The flexible portion 350 of the display screen 300 is located within this receiving space.

[0248] In this embodiment, by rotatably connecting the first support member 51 to the first connector 21 and rotatably and slidably connecting it to the second swing arm 41, and rotatably connecting the second support member 52 to the second connector 22 and rotatably and slidably connecting it to the fourth swing arm 42, the first support member 51 can rotate relative to the first connector 21 and the second support member 52 can rotate relative to the second connector 22 when the rotating shaft mechanism 100 rotates. This allows the angle between the first support member 51 and the second support member 52 to be adjustable, which helps to form a "teardrop" clearance space when the rotating shaft mechanism 100 is in a folded state, so as to adapt to the bending of the display screen 300. This can avoid the rotating shaft mechanism 100 from squeezing the display screen 300 when it is in a folded state, thus improving the service life of the display screen 300. At the same time, it can also reduce or even avoid creases on the display screen 300, improving the user experience.

[0249] It should be noted that, Figures 7 to 20Only a portion of the structure of the rotating shaft mechanism is shown. The above description uses the first rotating structure 3 as an example. The basic structure of each component in the second rotating structure 3A and the third rotating structure 3B of the rotating shaft mechanism, the connection relationship between components, the connection relationship between components and components other than the assembly, and the motion principle of the components can all be referred to Figure 7 Related design.

[0250] Please see Figures 26 to 28 , Figure 26 This is a partial structural schematic diagram of the rotating shaft mechanism 100 provided in the second embodiment of this application. Figure 27 yes Figure 26 The schematic diagram shows a cross-sectional view of the rotating shaft mechanism 100 along the DD direction. Figure 28 yes Figure 26 An enlarged schematic diagram of the first swing arm 31 in the rotating shaft mechanism 100 shown.

[0251] This embodiment and Figure 7 The difference in the illustrated embodiment is that, in this embodiment, the first swing arm 31 is provided with a first sliding groove 37 on the side facing the second swing arm 41. The first sliding groove 37 is a strip-shaped groove, and the second swing arm 41 is provided with a first sliding shaft 416 that cooperates with the first sliding groove 37. The first sliding shaft 416 is installed in the first sliding groove 37, and the first sliding shaft 416 can slide and rotate relative to the first swing arm 31 along the first sliding groove 37.

[0252] When the rotating shaft mechanism 100 is in the unfolded state, the first end 373 and the second end 374 of the first slide groove 37 are offset along both the X and Z directions. That is, the connecting line between the first end 373 and the second end 374 intersects both the X and Z directions. Specifically, the second end 374 is located in the negative X-axis direction and the positive Z-axis direction of the first end 373. In other words, the second end 374 is located on the side of the first end 373 facing the base 10, and also on the side of the first end 373 facing the display screen 300.

[0253] In this embodiment, the first slide groove 37 is an arc-shaped slide groove. The first slide groove 37 includes a first segment 371 and a second segment 372. The first segment 371 and the second segment 372 are connected along the extending direction of the first slide groove 37. The first segment 371 is located on the side of the second segment 372 closer to the first shaft 313. Specifically, the first end 373 is located at the end of the first segment 371 away from the second segment 372, and the second end 374 is located at the end of the second segment 372 away from the first segment 371. In this embodiment, the center of the first slide groove 37 is located on the positive Z-axis side of the first slide groove 37, that is, the center of the first slide groove 37 is located on the side of the first slide groove 37 facing the display screen 300. The radius of curvature of the first segment 371 is greater than the radius of curvature of the second segment 372. That is, the degree of curvature of the first segment 371 is less than the degree of curvature of the second segment 372. For example, the first segment 371 is approximately straight, and the second segment 372 is arc-shaped. The first segment 371 is close to the first shaft 313, and the second segment 372 extends in an arc towards the top surface of the first swing body 312.

[0254] In one embodiment, the first slide groove 37 is an arc-shaped groove, and the center of the first slide groove 37 is located on one side of the negative Z-axis direction of the first slide groove 37. That is, the second segment 372 extends in an arc towards the bottom surface of the first swing body 312, that is, it extends towards the negative Z-axis direction. Alternatively, the first slide groove 37 can also be straight. That is, both the first segment 371 and the second segment 372 are straight and connected in a straight line. Here, the shape of the first slide groove 37 is not specifically limited, as long as it can realize the rotation and sliding connection between the first swing arm 31 and the second swing arm 41.

[0255] In this embodiment, the first sliding shaft 416 faces the first swing arm 31, and the extension direction of the first sliding shaft 416 is parallel or approximately parallel to the Y direction. The second swing arm 41 and the first swing arm 31 are arranged sequentially along the Y direction. The first sliding shaft 416 is installed in the first sliding groove 37 and can slide along the first sliding groove 37. At the same time, the first sliding shaft 416 can also rotate around the axial direction of the first sliding shaft 416.

[0256] The third swing arm 32 and the first swing arm 31 are mirror images of each other. A third groove 38 is provided on the side of the third swing arm 32 facing the fourth swing arm 42. When the rotating shaft mechanism 100 is in the extended state, the third end 383 and the fourth end 364 of the third groove 38 are offset along both the X and Z directions. That is, the connecting line between the third end 383 and the fourth end 384 intersects both the X and Z directions. The fourth end 384 is located in both the positive X-axis and positive Z-axis directions of the third end 383. Specifically, the fourth end 384 is located on the side of the third end 383 facing the base 10, and also on the side of the third end 383 facing the display screen 300.

[0257] In this embodiment, the third slide groove 38 has an arc-shaped slide groove structure. The third slide groove 38 includes a third segment 381 and a fourth segment 382. The third segment 381 and the fourth segment 382 are connected along the extending direction of the third slide groove 38. The third segment 381 is located on the side of the fourth segment 382 closer to the second shaft 323. Specifically, the third end 383 is located at the end of the third segment 381 away from the fourth segment 382, ​​and the fourth end 384 is located at the end of the fourth segment 382 away from the third segment 381. In this embodiment, the center of the third slide groove 38 is located on the positive Z-axis side of the third slide groove 38, that is, the center of the third slide groove 38 is located on the side of the third slide groove 38 facing the display screen 300. The radius of curvature of the third segment 381 is greater than the radius of curvature of the fourth segment 382. That is, the degree of curvature of the third segment 381 is less than the degree of curvature of the fourth segment 382. For example, the third segment 381 is approximately straight, and the fourth segment 382 is arc-shaped. Alternatively, both the third segment 381 and the fourth segment 382 can be arc-shaped. The third segment 381 is close to the second shaft 323, and the fourth segment 382 extends in an arc towards the top surface of the second swing body 322.

[0258] In one embodiment, the third slide groove 38 has an arc-shaped structure, and the center of the third slide groove 38 is located on the negative Z-axis side of the third slide groove 38. That is, the second segment 372 extends in an arc towards the bottom surface of the first swing body 312, that is, it extends towards the negative Z-axis direction. Alternatively, the third slide groove 38 can also be straight. That is, the third segment 381 and the fourth segment 382 are both straight and connected in a straight line. Here, the shape of the third slide groove 38 is not specifically limited, as long as it can realize the rotation and sliding connection between the first swing arm 31 and the second swing arm 41.

[0259] The fourth swing arm 42 is provided with a second sliding shaft 426. The second sliding shaft 426 faces the third swing arm 32, and its extension direction is parallel or approximately parallel to the Y direction. The fourth swing arm 42 and the third swing arm 32 are arranged sequentially along the Y direction. The second sliding shaft 426 is installed in the third sliding groove 38 and can slide along the third sliding groove 38. At the same time, the second sliding shaft 426 can also rotate around its axial direction.

[0260] Please combine Figure 14 , Figure 26 and Figure 27When the rotating shaft mechanism 100 is in the unfolded state, the first connecting member 21 and the second connecting member 22 are unfolded relative to each other, the first swing arm 31 and the third swing arm 32 are unfolded relative to each other, and the second swing arm 41 and the fourth swing arm 42 are unfolded relative to each other. The first shaft 313 of the first swing arm 31 is located at the first position 217 of the second slide groove 213, and the fourth shaft 429 of the third swing arm 32 is located at the third position 227 of the fourth slide groove 223. The first sliding shaft 416 is located in the first section 371 of the first slide groove 37 and at the first end 373 of the first section 371. The second sliding shaft 426 is located in the third section 381 of the third slide groove 38 and at the third end 383 of the third section 381.

[0261] Please refer to the following: Figure 29 , Figure 29 yes Figure 27 The schematic diagram of the cross-sectional structure of the rotating shaft mechanism 100 in the folded state is shown.

[0262] When the rotating shaft mechanism 100 rotates from the unfolded state to the folded state, the first connecting member 21 rotates counterclockwise, causing the first swing arm 31 and the second swing arm 41 to rotate counterclockwise simultaneously. When the first swing arm 31 rotates counterclockwise, the first rotating body 311 rotates along the first rotating groove 11, and the first shaft 313 slides along the second sliding groove 213 from the first position 217 to the second position 218. When the second swing arm 41 rotates counterclockwise, the first sliding body 411 slides along the fifth sliding groove 214 towards the first side 203, and the first sliding shaft 416 slides along the first section 371 towards the second section 372, and then slides along the second section 372 towards the second end 374. At the same time, the first sliding shaft 416 rotates around its axial direction.

[0263] The second connecting member 22 rotates clockwise, causing the third swing arm 32 and the fourth swing arm 42 to rotate clockwise simultaneously. When the third swing arm 32 rotates clockwise, the second rotating body 321 rotates along the second rotating groove 12, and the second shaft 323 slides along the fourth sliding groove 223 from the third position 227 towards the fourth position 228. When the fourth swing arm 42 rotates clockwise, the second sliding body 421 slides along the seventh sliding groove 224 towards the third side 207, and the second sliding shaft 426 slides along the third segment 381 towards the fourth segment 382, ​​and then slides along the fourth segment 382 towards the fourth end 384. At the same time, the second sliding shaft 426 rotates around its axial direction, so that the rotating shaft mechanism 100 is in a folded state.

[0264] like Figure 29As shown, when the rotating shaft mechanism 100 is in the folded state, the first connecting member 21 and the second connecting member 22 are folded relative to each other, the first swing arm 31 and the third swing arm 32 are folded relative to each other, and the second swing arm 41 and the fourth swing arm 42 are folded relative to each other. The first shaft 313 is located in the second position 218, and the second shaft 323 is located in the fourth position 228. The first sliding shaft 416 is located within the second section 372 of the first sliding groove 37, and is located at the second end 374 of the second section 372. The second sliding shaft 426 is located within the fourth section 382 of the third sliding groove 38, and is located at the fourth end 384 of the fourth section 382.

[0265] When the rotating shaft mechanism 100 rotates from the folded state to the unfolded state, the first connecting member 21 rotates clockwise, causing the first swing arm 31 and the second swing arm 41 to rotate clockwise simultaneously. This causes the first shaft 313 to slide along the second slide groove 213 from the second position 218 toward the first position 217, the first sliding body 411 to slide along the fifth slide groove 214 toward the second side 204, and the first sliding shaft 416 to slide along the second section 372 toward the first section 371, and then slide along the first section 371 toward the first end 373. At the same time, the first sliding shaft 416 rotates around the axial direction of the first sliding shaft 416.

[0266] The second connecting member 22 rotates counterclockwise, causing the third swing arm 32 and the fourth swing arm 42 to rotate counterclockwise simultaneously. This causes the second shaft 323 to slide along the fourth slide groove 223 from the fourth position 228 toward the third position 227, the second sliding body 421 to slide along the seventh slide groove 224 toward the fourth side 208, and the second sliding shaft 426 to slide along the fourth segment 342 toward the third segment 381, and then along the third segment 381 toward the third end 383. At the same time, the second sliding shaft 426 rotates around its axial direction, causing the rotating shaft mechanism 100 to rotate to the unfolded state.

[0267] In this embodiment, by rotating and sliding the first swing arm 31 and the first connecting member 21 through the second sliding groove 213 and the first shaft 313, and by rotating and sliding the first swing arm 31 and the second swing arm 41 through the first sliding groove 37 and the first sliding shaft 416, the first swing arm 31 can rotate relative to the first connecting member 21 toward the outside of the rotating shaft mechanism 100 during the rotation of the rotating shaft mechanism 100 from the unfolded state to the folded state. This reduces the rotation angle of the first swing arm 31 relative to the base 10 during the rotation of the rotating shaft mechanism 100 from the unfolded state to the folded state, thereby preventing the first swing arm 31 from squeezing the display screen 300 when the rotating shaft mechanism 100 is in the folded state, extending the service life of the display screen 300. At the same time, it can increase the overlap between the first swing arm 31 and the base 10 when the rotating shaft mechanism 100 is in the folded state, thereby improving the connection stability between the first swing arm 31 and the base 10 and improving the drop resistance of the rotating shaft mechanism 100.

[0268] In this embodiment, by providing a first sliding groove 37 in the first swing arm 31 and a first sliding shaft 416 in the second swing arm 41, the first swing arm 31 and the second swing arm 41 can be rotated and slidably connected. The first sliding shaft 416 can be confined within the first sliding groove 37, thereby improving the stability of the first sliding shaft 416 sliding along the first sliding groove 37, thus improving the rotational stability of the first swing arm 31 and the second swing arm 41, and further improving the rotational stability of the rotating shaft mechanism 100.

[0269] In this embodiment, by setting the radius of curvature of the second segment 372 to be smaller than that of the first segment 371, the initial rotation speed of the pivot mechanism 100 when rotating to the folded state can be reduced to avoid pulling on the display screen 300, thereby preventing damage to the display screen 300 and extending its service life. At the same time, the rotation speed of the pivot mechanism 100 when rotating from the unfolded state to the folded state can be increased, thereby reducing the time required for the pivot mechanism 100 to rotate from the unfolded state to the folded state and improving the user experience.

[0270] In this embodiment, by rotating and slidingly connecting the third swing arm 32 and the second connector 22 through the fourth slide groove 223 and the second shaft 323, and by rotating and slidingly connecting the third swing arm 32 and the fourth swing arm 42 through the third slide groove 38 and the second slide shaft 426, the third swing arm 32 can rotate relative to the second connector 22 toward the outside of the rotating shaft mechanism 100 during the rotation of the rotating shaft mechanism 100 from the unfolded state to the folded state. This reduces the rotation angle of the third swing arm 32 relative to the base 10 during the rotation of the rotating shaft mechanism 100 from the unfolded state to the folded state, thereby preventing the third swing arm 32 from squeezing the display screen 300 when the rotating shaft mechanism 100 is in the folded state, extending the service life of the display screen 300. At the same time, it can increase the overlap between the third swing arm 32 and the base 10 when the rotating shaft mechanism 100 is in the folded state, thereby improving the connection stability between the third swing arm 32 and the base 10, and further improving the drop resistance of the rotating shaft mechanism 100.

[0271] Meanwhile, in this embodiment, by providing a third sliding groove 38 in the third swing arm 32 and a second sliding shaft 426 in the fourth swing arm 42, the third swing arm 32 and the fourth swing arm 42 can be rotated and slidably connected. The second sliding shaft 426 can be confined within the third sliding groove 38, thereby improving the stability of the second sliding shaft 426 sliding along the third sliding groove 38, thus improving the rotational stability of the third swing arm 32 and the fourth swing arm 42, and further improving the rotational stability of the rotating shaft mechanism 100.

[0272] Furthermore, in this embodiment, by setting the radius of curvature of the fourth segment 382 to be smaller than that of the third segment 381, the initial rotation speed of the pivot mechanism 100 when rotating to the folded state can be reduced to avoid pulling on the display screen 300, thereby preventing damage to the display screen 300 and extending the service life of the display screen 300. At the same time, the rotation speed of the pivot mechanism 100 at the end of rotating from the unfolded state to the folded state can be increased, thereby reducing the time it takes for the pivot mechanism 100 to rotate from the unfolded state to the folded state and improving the user experience.

[0273] In one embodiment, the positions of the first sliding shaft 416 and the first sliding groove 37 can also be interchanged. That is, the first swing arm 31 is provided with a first sliding shaft. The structure of the first sliding shaft is similar to... Figure 32 The structure of the first sliding shaft 416 in the illustrated embodiment is the same as or similar to that of the second sliding arm 41. The first sliding shaft is fixed to the side of the first swing arm 31 and faces the second swing arm 41. The second swing arm 41 is provided with a first sliding rail. The structure of the first sliding rail is similar to that of the second sliding arm 41. Figure 32 The structure of the first slide groove 37 in the illustrated embodiment is the same as or similar to that of the first slide shaft. The first slide shaft of the first swing arm 31 is installed in the first slide rail of the second swing arm 41. When the rotating shaft mechanism 100 rotates, the first slide shaft slides and rotates along the first slide rail.

[0274] In one embodiment, the positions of the second sliding shaft and the third sliding groove 38 can also be interchanged. That is, the third swing arm 32 is provided with a second sliding shaft. The structure of the second sliding shaft is similar to... Figure 32 The structure of the second sliding shaft 426 in the illustrated embodiment is the same as or similar to that of the third swing arm 32. The second sliding shaft is fixed to the side of the third swing arm 32 and faces the fourth swing arm 42. The fourth swing arm 42 is provided with a third sliding groove 38. The structure of the second slide rail is similar to... Figure 32 The structure of the third slide groove 38 in the illustrated embodiment is the same as or similar to that of the third swing arm 32. The second slide shaft of the third swing arm 32 is installed in the second slide rail of the fourth swing arm 42. When the rotating shaft mechanism 100 rotates, the second slide shaft slides and rotates along the second slide rail.

[0275] Please see Figure 30 and Figure 31 , Figure 30 This is a cross-sectional structural schematic diagram of the rotating shaft mechanism 100 provided in the third embodiment of this application. Figure 31 yes Figure 30 An enlarged schematic diagram of the first swing arm 31 in the rotating shaft mechanism 100 shown.

[0276] This embodiment and Figure 16 The difference in the illustrated embodiment is that:

[0277] In this embodiment, the first slide rail 315 of the first swing arm 31 includes a first surface 33 and a second surface 34 disposed opposite to each other along the thickness direction of the first slide rail 315, with the second surface 34 located on the side of the first surface 33 facing the display screen 300. That is, the second surface 34 is located on the positive Z-axis side of the first surface 33. The first surface 33 includes a first stop surface 331, a first guide surface 332, and a first sliding surface 333 connected sequentially along the extension direction of the first slide rail 315. The first stop surface 331 is planar or approximately planar. The first stop surface 331 is located in the second segment of the first slide rail 315, and the first sliding surface 333 is located in the first segment. The first stop surface 331 and the first sliding surface 333 are set at an angle, and the angle between the first stop surface 331 and the first sliding surface 333 is greater than or equal to 80 degrees and less than 90 degrees. The first guide surface 332 is an arc surface to achieve a smooth connection between the first stop surface 331 and the first sliding surface 333.

[0278] The third swing arm 32 and the first swing arm 31 are mirror images of each other. The second slide rail 325 of the third swing arm 32 includes a third surface 35 and a fourth surface 36 arranged opposite to each other along the thickness direction of the second slide rail 325, with the fourth surface 36 located on the side of the third surface 35 facing the display screen 300. That is, the fourth surface 36 is located on the positive Z-axis direction side of the third surface 35. The third surface 35 includes a third stop surface 351, a second guide surface 352, and a third sliding surface 353 connected sequentially along the extension direction of the second slide rail 325. The third stop surface 351 is planar or approximately planar. The third stop surface 351 is located in the fourth segment of the second slide rail 325, and the third sliding surface 353 is located in the third segment 326. The third stop surface 351 and the third sliding surface 353 are arranged at an angle, and the angle between the third stop surface 351 and the third sliding surface 353 is greater than or equal to 80 degrees and less than 90 degrees. The second guide surface 352 is an arc surface to achieve a smooth connection between the third stop surface 351 and the third sliding surface 353.

[0279] Please refer to the following: Figure 32 , Figure 32 yes Figure 30 An enlarged schematic diagram of the second swing arm 41 in the rotating shaft mechanism 100 shown.

[0280] In this embodiment, the first sliding post 417 is cylindrical, and the second sliding post 418 has an irregular shape. The second sliding post 418 is located on the side of the first sliding post 417 closest to the base 10. Specifically, the second sliding post 418 includes a first arc surface 4181 and a second stop surface 4182 that are connected to each other. The second stop surface 4182 is planar or approximately planar, and the first arc surface 4181 is curved. Both the first arc surface 4181 and the second stop surface 4182 face the first sliding post 417.

[0281] The third sliding post 427 is cylindrical and is a mirror image of the first sliding post 417. The fourth sliding post 428 is a mirror image of the second sliding post 418. The fourth sliding post 428 is located on the side of the third sliding post 427 closest to the base 10. Specifically, the fourth sliding post 428 includes a second arc surface 4281 and a fourth stop surface 4282 that are connected to each other. The fourth stop surface 4282 is planar or approximately planar, and the second arc surface 4281 is curved. Both the second arc surface 4281 and the fourth stop surface 4282 face the third sliding post 427.

[0282] like Figure 25As shown, when the rotating shaft mechanism 100 is in the unfolded state, the first sliding column 417 and the second sliding column 418 clamp the first slide rail 315 and are located at the first segment 316 of the first slide rail 315. The surface of the first sliding column 417 is in contact with the second surface 34, and the first arc surface 4181 of the second sliding column 418 is in contact with the first sliding surface 333 of the first slide rail 315. The third sliding column 427 and the fourth sliding column 428 clamp the second slide rail 325 and are located at the third segment 326 of the second slide rail 325. The surface of the third sliding column 427 is in contact with the fourth surface 36, and the second arc surface 4281 of the fourth sliding column 428 is in contact with the third sliding surface 353 of the second slide rail 325.

[0283] Please combine Figure 33 , Figure 33 yes Figure 30 The schematic diagram of the cross-sectional structure of the rotating shaft mechanism 100 in the folded state is shown.

[0284] During the rotation of the pivot mechanism 100 from the unfolded state to the folded state, the first swing arm 31 and the third swing arm 32 rotate toward each other, as do the second swing arm 41 and the fourth swing arm 42. The first slide column 417 and the second slide column 418 slide along the first slide rail 315 from the first segment 316 toward the second segment 317, and then slide along the second segment 317. Specifically, the first slide column 417 slides along the second surface 34 from the first segment 316 to the second segment 317, and then slides to the second end 319 of the second segment 317. The first arc surface 4181 of the second slide column 418 slides along the first sliding surface 333 toward the first guide surface 332, and then slides along the first guide surface 332, before disengaging from the first slide rail 315.

[0285] The third slide bar 427 and the fourth slide bar 428 slide along the second slide rail 325 from the third segment 326 toward the fourth segment 327, and then slide along the fourth segment 327. Specifically, the third slide bar 427 slides along the fourth surface 36 from the third segment 326 to the fourth segment 327, and then slides to the fourth end 329 of the fourth segment 327. The second arc surface 4281 of the fourth slide bar 428 slides along the third sliding surface 353 toward the second guide surface 352, and then slides along the second guide surface 352, before disengaging from the second slide rail 325.

[0286] like Figure 33As shown, when the rotating shaft mechanism 100 is in the folded state, the second sliding column 418 is located on the side of the first slide rail 315 near the base 10. The second stop surface 4182 and the first stop surface 331 are arranged opposite each other along the thickness direction of the base 10, that is, opposite each other along the Z direction. The first stop surface 331 acts as a stop for the second stop surface 4182. That is, the first slide rail 315 acts as a stop for the second sliding column 418. In other words, the first swing arm 31 provides support and stops for the second swing arm 41. When the rotating shaft mechanism 100 falls from the side of the base 10 or is impacted, the second swing arm 41 slides along the fifth slide groove 214 in a direction away from the base 10, and the second stop surface 4182 moves toward the first stop surface 331 and forms a surface-to-surface contact with the first stop surface 331. At this time, the first slide rail 315 can prevent the second swing arm 41 from continuing to slide along the fifth slide groove 214 in a direction away from the base 10, thereby avoiding squeezing the display screen 300, which can improve the drop resistance of the foldable electronic device 500 and extend the service life of the display screen 300.

[0287] When the pivot mechanism 100 is in the folded state, the fourth slide post 428 is located on the side of the second slide rail 325 near the base 10, and the fourth stop surface 4282 is opposite to the third stop surface 351. In this embodiment, by setting the third stop surface 351 on the second slide rail 325 and the fourth stop surface 4282 on the fourth slide post 428, and ensuring that the third stop surface 351 and the fourth stop surface 4282 are opposite to each other along the thickness direction of the base when the pivot mechanism 100 is in the folded state, the second slide rail 325 acts as a stop for the fourth slide post 428. That is, the third swing arm provides support and a stop for the fourth swing arm 42. This arrangement can prevent the fourth swing arm 42 from sliding away from the base 10 along the seventh slide groove 224 when the pivot mechanism 100 is impacted or dropped, thereby further preventing pressure on the display screen 300, further improving the drop resistance of the foldable electronic device 500, and further extending the service life of the display screen 300.

[0288] In this embodiment, by providing a first arc surface 4181 and a second stop surface 4182 on the second slide column 418, it is possible to ensure that the second slide column 418 can slide along the first slide rail 315 while also achieving a stop between the second slide column 418 and the first slide rail 315 when the rotating shaft mechanism 100 is in the folded state, thus simplifying the structure of the rotating shaft mechanism 100. Similarly, in this embodiment, by providing a second arc surface 4281 and a fourth stop surface 4282 on the fourth slide column 428, it is possible to ensure that the fourth slide column 428 can slide along the second slide rail 325 while also achieving a stop between the fourth slide column 428 and the second slide rail 325 when the rotating shaft mechanism 100 is in the folded state, thereby simplifying the structure of the rotating shaft mechanism 100.

[0289] like Figure 30 As shown, in this embodiment, the second stop surface 4182 and the first stop surface 331 are spaced apart. The distance between the second stop surface 4182 and the first stop surface 331 is 0.1mm to 0.5mm. The fourth stop surface 4282 and the third stop surface 351 are spaced apart. The distance between the fourth stop surface 4282 and the third stop surface 351 is 0.1mm to 0.5mm.

[0290] During the rotation of the pivot mechanism 100 from its folded state to its unfolded state, the first swing arm 31 and the third swing arm 32 rotate toward each other, as do the second swing arm 41 and the fourth swing arm 42. The first slide column 417 slides along the second surface 34 from the second segment 317 to the first segment 316, and then slides along the first segment 316 to the first end 318. The second slide column 418 first moves toward the first slide rail 315, then the first arc surface 4181 contacts the first guide surface 332, and then slides along the first guide surface 332 to the first sliding surface 333, and slides along the first sliding surface 333. The third slide column 427 slides along the fourth surface 36 from the fourth segment 327 to the third segment 326, and then slides along the third segment 326 to the third end 328. The fourth sliding column 428 first moves toward the second slide rail 325, then the second arc surface 4281 contacts the second guide surface 352, and then the second arc surface 4281 slides along the second guide surface 352 to the third sliding surface 353, and slides along the third sliding surface 353, so that the rotating shaft mechanism 100 rotates to the unfolded state.

[0291] In this embodiment, by spaced apart the first stop surface 331 and the second stop surface 4182, a small gap is formed between the second slide column 418 and the first slide rail 315. This allows the second slide column 418 to smoothly slide from the second segment 317 to the first segment 316 when the rotating shaft mechanism 100 rotates to the folding process, thereby improving the smoothness of the rotating shaft mechanism 100 during rotation. Similarly, in this embodiment, by spaced apart the third stop surface 351 and the fourth stop surface 4282, a small gap is formed between the fourth slide column 428 and the second slide rail 325. This allows the fourth slide column 428 to smoothly slide from the fourth segment 327 to the third segment 326 when the rotating shaft mechanism 100 rotates to the folding process, thereby further improving the smoothness of the rotating shaft mechanism 100 during rotation.

[0292] Please combine Figure 34 , Figure 34 This is a partially exploded structural diagram of the rotating shaft mechanism 100 provided in the third embodiment of this application.

[0293] In this embodiment, the second rotating structure 3A has the same structure as the first rotating structure 3, and the third rotating structure 3B is a mirror image of the first rotating structure 3. First connecting members 21, 21A, and 21B are parallel and spaced apart along the Y direction. First connecting member 21A has a second sliding groove 213A, and first connecting member 21B has a second sliding groove 213B. The orthographic projection of the second sliding groove 213 along the Y direction completely coincides with the second sliding grooves 213A and 213B. First swing arms 31, 31A, and 31B are parallel and spaced apart along the Y direction. First swing arm 31A includes a first shaft 313A, and first swing arm 31B includes a first shaft 313B. The axis of the first shaft 313 coincides with the axes of the first shafts 313A and 313B. That is, the orthographic projection of the first shaft 313 along the Y direction completely coincides with the first shafts 313A and 313B. The orthographic projection of the first slide rail 315 of the first swing arm 31 along the Y direction completely coincides with the first slide rails of the first swing arm 31A and the first slide rails of the first swing arm 31B. This simplifies the design and manufacturing of the rotating shaft mechanism 100, reduces production costs, and enables multiple first swing arms to rotate synchronously with consistent rotation speeds and angles, multiple second swing arms to rotate synchronously with consistent rotation speeds and angles, and multiple first connecting parts to rotate synchronously with consistent angles, thereby ensuring the consistency and smoothness of the rotation of the rotating shaft mechanism 100.

[0294] In this embodiment, the second connectors 22, 22A, and 22B are arranged parallel to each other and spaced apart along the Y direction. The orthographic projection of the fourth slide groove 223 of the second connector 22 along the Y direction completely coincides with the orthographic projection of the fourth slide groove of the second connector 22A and the fourth slide groove of the second connector 22B. The third swing arms 32, 32A, and 32B are arranged parallel to each other and spaced apart along the Y direction. The axes of the second shaft 323 of the third swing arm 32, the second shaft of the third swing arm 32A, and the second shaft of the third swing arm 32B coincide. That is, the orthographic projection of the second shaft 323 of the third swing arm 32 along the Y direction completely coincides with the second shaft of the third swing arm 32A and the second shaft of the third swing arm 32B. The orthographic projection of the second slide rail 325 of the third swing arm 32 along the Y direction completely coincides with the second slide rail of the third swing arm 32A and the third swing arm 32B. This further simplifies the design and manufacturing of the rotating shaft mechanism 100, reduces production costs, and enables multiple third swing arms to rotate synchronously with consistent rotation speed and angle, multiple fourth swing arms to rotate synchronously with consistent rotation speed and angle, and multiple second connecting parts to rotate synchronously with consistent rotation angle, thereby further improving the consistency and smoothness of the rotation of the rotating shaft mechanism 100.

[0295] Please combine Figures 35 to 37 , Figure 35 This is an exploded structural diagram of the rotating shaft mechanism 100 provided in the fourth embodiment of this application. Figure 36 This is a cross-sectional structural schematic diagram of the rotating shaft mechanism 100 provided in the fourth embodiment of this application. Figure 37 This is a cross-sectional view of the rotating shaft mechanism 100 provided in the fourth embodiment of this application at another location.

[0296] This implementation method and Figure 34 The difference in the illustrated embodiment is that, in this embodiment, the second sliding grooves of at least two of the plurality of first connectors are offset along the thickness direction of the first connector, that is, offset along the Z direction, and the first shafts of at least two of the plurality of first swing arms are offset along the Z direction.

[0297] For example, the second slide groove 213 of the first connector 21 is offset from the second slide grooves of the first connectors 21A and 21B along the Z direction and is located on one side of the positive Z-axis direction of the second slide grooves of the first connectors 21A and 21B. The orthographic projection of the second slide groove of the first connector 21 along the Y direction can be completely or partially offset from the second slide grooves of the first connectors 21A and 21B along the Z direction. Correspondingly, the first shaft 313 of the first swing arm 31 is partially or completely offset from the first shaft of the first swing arms 31A and 31B along the Z direction and is located on one side of the positive Z-axis direction of the first shaft of the first swing arms 31A and 31B. That is, the orthographic projection of the first shaft 313 of the first swing arm 31 along the Y direction can be completely or partially offset from the first shaft of the first swing arms 31A and 31B along the Z direction.

[0298] It is understood that the first rotating structure 3 in this embodiment can be derived from... Figure 34 In the illustrated embodiment, the second slide groove 213 and the first shaft 313 in the first rotating structure 3 are translated towards the positive Z-axis direction, thereby forming a clearance space 4 on the first connector 21. This clearance space 4 is located on the negative Z-axis side of the second slide groove 213 and can be used to avoid other components in the foldable electronic device 500, thus making full use of the space within the foldable electronic device 500. For example, when the foldable electronic device 500 has an outer screen, the clearance space 4 is used to avoid the FPC device of the screen. Alternatively, the clearance space 4 is used to avoid the battery cover, audio devices, etc. Alternatively, the clearance space 4 is used to install grounding devices such as spring contacts, which are electrically connected to the first connector 21 and the first housing 210 of the foldable electronic device 500 to ground the first housing 210.

[0299] It should be noted that when the position and shape of the second slide groove 213 change, the rotation speed and rotation angle of the first swing arm 31 can be adjusted by adjusting the shape and position of the first slide rail 315, as well as the positions of the first slide post 417 and the second slide post 418. This allows the first swing arm 31 in the first rotating structure 3 to rotate simultaneously with the first swing arm 31A in the second rotating structure 3A and the first swing arm 31B in the third rotating structure 3B to either a folded or unfolded state, thereby ensuring the consistency and smoothness of the rotation of the rotating shaft mechanism 100. For example, as shown... Figure 37 As shown, in this embodiment, the positions of the first end 318 and the second end 319 of the first slide rail 315 remain unchanged, and the degree of curvature is smaller. That is, the orthographic projection of the first end 318 of the first slide rail 315 in the first swing arm 31 along the Y direction coincides with the first end of the first slide rail in the first swing arm 31A and the first end of the first slide rail in the first swing arm 31B, and the orthographic projection of the second end 319 of the first slide rail 315 in the first swing arm 31 along the Y direction coincides with the second end of the first slide rail in the first swing arm 31A and the second end of the first slide rail in the first swing arm 31B. The degree of curvature of the first slide rail 315 is less than that of the first swing arms 31A and 31B. That is, the first slide rail 315 is more gentle. Furthermore, the degree of curvature of the first slide rail 315 is less than that of the second slide rail 325.

[0300] In other embodiments, the second groove of the first connector 21A is at least partially offset from the second grooves of the first connectors 21 and 21B along the Z-direction and is located on the positive Z-axis side of the second grooves of the first connectors 21 and 21B, thereby forming a clearance space in the first connector 21A to avoid other components in the foldable electronic device. Correspondingly, the first shaft of the first swing arm 31A is partially or completely offset from the first shaft of the first swing arms 31 and 31B along the Z-direction and is located on the positive Z-axis side of the first shaft of the first swing arms 31 and 31B.

[0301] In other words, the rotating shaft mechanism 100 provided in this embodiment can adjust the position or shape of any one or more second slide grooves and first shafts in multiple rotating structures as needed, and adjust the position or shape of the corresponding first slide rail, first slide column and second slide column. In this way, while ensuring the smooth rotation of the rotating shaft mechanism 100, the required clearance space is formed in the first connecting member to adapt to different space requirements, thereby making the rotating shaft mechanism 100 more flexible in design and able to adapt to different application scenarios.

[0302] In one embodiment, the fourth slides of at least two of the plurality of second connectors are at least partially offset along the Z-direction, and the second shafts of at least two of the plurality of third swing arms are at least partially offset along the Z-direction. For example, the fourth slide 223 of the second connector 22 is offset along the Z-direction from the fourth slides of the second connectors 22A and 22B, and is located on the positive Z-axis side of the fourth slides of the second connectors 22A and 22B, thereby forming a clearance space in the second connector 22 to avoid other components in the foldable electronic device 500. Correspondingly, the second shaft 323 of the third swing arm 32 is partially or completely offset along the Z-direction from the second shafts of the third swing arms 32A and 32B, and is located on the positive Z-axis side of the second shafts of the third swing arms 32A and 32B.

[0303] Please see Figure 38 , Figure 38 This is a cross-sectional structural schematic diagram of the rotating shaft mechanism provided in the fifth embodiment of this application.

[0304] This embodiment and Figure 17 The difference in the illustrated embodiment is that, in this embodiment, the first swing arm 31 is rotatably connected to the base 10 via the first pivot pin 6, and the third swing arm 32 is rotatably connected to the base 10 via the second pivot pin 7.

[0305] During the rotation of the pivot mechanism 100 from the unfolded state to the folded state, the first connecting member 21 and the first swing arm 31 rotate counterclockwise, the first swing arm 31 rotates axially around the first pivot pin 6, and the first shaft body 313 slides along the second slide groove 213 from the first position 217 to the second position 218, while simultaneously rotating about its axial direction. The second connecting member 22 and the third swing arm 32 rotate clockwise, the third swing arm 32 rotates axially around the second pivot pin 7, and the second shaft body 323 slides along the fourth slide groove 223 from the third position 227 to the fourth position 228, while simultaneously rotating about its axial direction.

[0306] In this embodiment, by providing a second sliding groove 213 on the first connector 21, the first swing arm 31 is rotatably and slidably connected to the first connector 21. This reduces the rotation angle of the first swing arm 31 relative to the base 10 when the rotating shaft mechanism 100 rotates from the unfolded state to the folded state. This avoids the first swing arm 31 from squeezing the display screen 300 when the rotating shaft mechanism 100 is in the folded state, thereby improving the display effect of the display screen 300 and extending the service life of the display screen 300.

[0307] Meanwhile, in this embodiment, the rotational connection between the base 10 and the first swing arm 31 is achieved through the first pivot pin 6, which can improve the connection stability between the first swing arm 31 and the base 10, thereby improving the rotational stability of the rotating shaft mechanism 100.

[0308] In this embodiment, by providing a fourth sliding groove 223 on the second connector 22, the third swing arm 32 is rotatably and slidably connected to the second connector 22. This reduces the rotation angle of the third swing arm 32 relative to the base 10 when the rotating shaft mechanism 100 rotates from the unfolded state to the folded state. This avoids the third swing arm 32 from squeezing the display screen 300 when the rotating shaft mechanism 100 is in the folded state, thereby improving the display effect of the display screen 300 and extending the service life of the display screen 300.

[0309] Meanwhile, in this embodiment, the rotational connection between the base 10 and the third swing arm 32 is achieved through the second shaft pin 7, which can improve the connection stability between the third swing arm 32 and the base 10, thereby further improving the rotational stability of the rotating shaft mechanism 100.

[0310] The above are merely some embodiments and implementation methods of this application. The scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A rotating shaft mechanism, characterized in that, include: Base, first swing arm, second swing arm and first connecting member; The first connector is located on one side of the base in the width direction, one end of the first swing arm is rotatably connected to the base, and the other end of the first swing arm is rotatably and slidably connected to the first connector. Along the length of the base, the second swing arm is located on one side of the first swing arm; one end of the second swing arm is rotatably connected to the base, and the other end of the second swing arm is slidably connected to the first connector; the first swing arm is provided with a first sliding groove; the second swing arm includes a first sliding shaft, the first sliding shaft is disposed in the first sliding groove, and the first sliding shaft can slide and rotate relative to the first swing arm along the first sliding groove. The first connector, the first swing arm, and the second swing arm are all rotatable relative to the base so that the rotating shaft mechanism has an unfolded state and a folded state; when the rotating shaft mechanism rotates from the unfolded state to the folded state, the first swing arm moves relative to the first connector in the opposite direction to the rotation direction of the first connector.

2. The rotating shaft mechanism according to claim 1, characterized in that, The first sliding groove is provided on the side of the first swing arm facing the second swing arm.

3. The rotating shaft mechanism according to claim 1, characterized in that, When the rotating shaft mechanism is in the unfolded state, the connecting line between the first end and the second end of the first slide groove intersects with both the width and thickness directions of the base, and the second end is located on the side of the first end facing the base.

4. The rotating shaft mechanism according to any one of claims 1-3, characterized in that, The first swing arm includes a first shaft, which is located at the end of the first swing arm away from the base; the first slide groove includes a first section and a second section, which are connected along the extension direction of the first slide groove; when the rotating shaft mechanism is in the unfolded state, the first section is located on the side of the second section closer to the first shaft; the radius of curvature of the first section is greater than the radius of curvature of the second section.

5. The rotating shaft mechanism according to any one of claims 1-3, characterized in that, One side of the rotating shaft mechanism is used to mount the display screen; when the rotating shaft mechanism is in the unfolded state, the center of the first slide groove is located on the side of the first slide groove facing the display screen.

6. The rotating shaft mechanism according to any one of claims 1 to 3, characterized in that, The first connector is provided with a second sliding groove; the first swing arm includes a first shaft, which is located at the end of the first swing arm away from the base. The first shaft is installed in the second sliding groove and can slide and rotate relative to the first connector along the second sliding groove.

7. The rotating shaft mechanism according to claim 6, characterized in that, The second slide groove includes a first position and a second position, the first position and the second position are respectively located at opposite ends of the extension direction of the second slide groove, and are spaced apart along the thickness direction of the first connector; When the rotating shaft mechanism is in the unfolded state, the first shaft is located at the first position; when the rotating shaft mechanism is in the folded state, the first shaft is located at the second position, and the second position is located on the side of the first position away from the center of the base.

8. The rotating shaft mechanism according to claim 7, characterized in that, The line connecting the first position and the second position intersects both the width direction and the thickness direction of the base.

9. The rotating shaft mechanism according to claim 6, characterized in that, The second groove is straight.

10. The rotating shaft mechanism according to claim 6, wherein two first shafts are spaced apart along the length direction of the rotating shaft mechanism; both first shafts are capable of rotating and sliding along the corresponding second slide groove.

11. The rotating shaft mechanism according to claim 10, characterized in that, The axes of the two first shafts coincide.

12. The rotating shaft mechanism according to any one of claims 1-3, characterized in that, The rotating shaft mechanism further includes a second connector, a third swing arm, and a fourth swing arm; the second connector and the first connector are respectively located on opposite sides of the width direction of the base, one end of the third swing arm is rotatably connected to the base, and the other end of the third swing arm is rotatably and slidably connected to the second connector; Along the length of the base, the fourth swing arm is located on one side of the third swing arm; one end of the fourth swing arm is rotatably connected to the base, and the other end of the fourth swing arm is slidably connected to the second connecting member; the fourth swing arm and the third swing arm are rotatably and slidably connected. When the rotating shaft mechanism rotates from the unfolded state to the folded state, the third swing arm moves in the opposite direction to the rotation direction of the second connector relative to the second connector.

13. The rotating shaft mechanism according to claim 12, characterized in that, The rotating shaft mechanism further includes a first support member and a second support member. The first support member is stacked on top of the first connecting member and is rotatably connected to the first connecting member. The second support member is stacked on top of the second connecting member and is rotatably connected to the second connecting member. When the rotating shaft mechanism is in the folded state, the first support member and the second support member are arranged opposite to each other, and the distance between the first support member and the second support member gradually increases along the direction close to the base; When the rotating shaft mechanism is in the unfolded state, the first support member and the second support member are located on opposite sides of the width direction of the base, and the top surface of the first support member is flush with the top surface of the second support member.

14. The rotating shaft mechanism according to claim 13, characterized in that, The first support member is rotatably and slidably connected to the second swing arm; the second support member is rotatably and slidably connected to the fourth swing arm.

15. The rotating shaft mechanism according to any one of claims 1-3, 7-11, or 13-14, characterized in that, The first connector is provided with a fifth sliding groove, which is used to install the second swing arm, and the second swing arm can slide along the fifth sliding groove.

16. The rotating shaft mechanism according to claim 15, characterized in that, The fifth slide groove includes a first sub-slide groove and a second sub-slide groove, which are spaced apart along the length of the rotating shaft mechanism.

17. The rotating shaft mechanism according to any one of claims 1-3, 7-11, or 13-14, characterized in that, When the rotating shaft mechanism rotates from the unfolded state to the folded state, the rotation angle of the first swing arm relative to the base is 90°~100°.

18. The rotating shaft mechanism according to any one of claims 1-3, 7-11, or 13-14, characterized in that, The base is provided with a first rotating groove, which is arc-shaped; the first rotating groove is used to install a first swing arm, which can slide along the arc-shaped extension direction of the first rotating groove.

19. The rotating shaft mechanism according to claim 18, characterized in that, The first rotating groove has first arc-shaped grooves on both sides of the rotating shaft mechanism along its length.

20. The rotating shaft mechanism according to any one of claims 1-3, 7-11, or 13-14, characterized in that, The first connector includes a first surface and a second surface, which are disposed opposite to each other along the thickness direction of the connector, and the included angle between the first surface and the second surface is greater than 0 degrees and less than 90 degrees.

21. The rotating shaft mechanism according to claim 2, characterized in that, When the rotating shaft mechanism is in the unfolded state, the connecting line between the first end and the second end of the first slide groove intersects with both the width and thickness directions of the base, and the second end is located on the side of the first end facing the base.

22. The rotating shaft mechanism according to claim 4, characterized in that, One side of the rotating shaft mechanism is used to mount the display screen; when the rotating shaft mechanism is in the unfolded state, the center of the first slide groove is located on the side of the first slide groove facing the display screen.

23. The rotating shaft mechanism according to claim 4, characterized in that, The first connector is provided with a second sliding groove; the first swing arm includes a first shaft, which is located at the end of the first swing arm away from the base. The first shaft is installed in the second sliding groove and can slide and rotate relative to the first connector along the second sliding groove.

24. The rotating shaft mechanism according to claim 5, characterized in that, The first connector is provided with a second sliding groove; the first swing arm includes a first shaft, which is located at the end of the first swing arm away from the base. The first shaft is installed in the second sliding groove and can slide and rotate relative to the first connector along the second sliding groove.

25. The rotating shaft mechanism according to claim 7, wherein the two first shafts are spaced apart along the length direction of the rotating shaft mechanism; both first shafts are capable of rotating and sliding along the corresponding second slide groove.

26. A foldable electronic device, characterized in that, It includes a first housing, a second housing, and a pivot mechanism as described in any one of claims 1 to 25, the pivot mechanism being connected between the first housing and the second housing.

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