An electronic device

Abstract

The present application discloses an electronic device. The electronic device includes a first shell, a second shell, a third shell, a first rotating shaft mechanism and a second rotating shaft mechanism. The first shell and the second shell are rotationally connected through the first rotating shaft mechanism, and the second shell and the third shell are rotationally connected through the second rotating shaft mechanism. When the electronic device is in use, the first shell and the second shell can rotate toward or away from each other under the action of the first rotating shaft mechanism, and the second shell and the third shell can rotate toward or away from each other under the action of the second rotating shaft mechanism, so that the electronic device can be closed and unfolded according to different usage scenarios. In addition, during the folding process of the electronic device, the first rotating shaft mechanism can limit the movement distance of the first shell and the second shell relative to the main axis, and the second rotating shaft mechanism can form a screen space that meets the bending requirements of the flexible display screen, thereby reducing the pulling or squeezing of the flexible display screen to improve the structural reliability of the electronic device.

Description

Technical Field

[0001] The present application relates to the technical field of foldable electronic devices, and in particular to an electronic device. Background Art

[0002] As flexible display technology matures, the display mode of electronic devices has changed greatly. Foldable flexible screen mobile phones, foldable flexible screen tablets, and wearable electronic devices with foldable flexible screens are an important evolution direction of future smart electronic devices. In order to meet users' demand for large display screens and portability of foldable electronic devices, three-fold folding machines are gradually used in people's daily lives.

[0003] The hinge mechanism is a key component for a foldable electronic device to realize the folding function. During the unfolding and closing process of the electronic device, it can drive the flexible display screen of the electronic device to flatten or bend. A three-fold electronic device usually includes three shells arranged side by side, and two adjacent shells are rotatably connected by a hinge mechanism to realize the switching of the three-fold electronic device between different folding forms. In addition, the flexible display screen of the three-fold electronic device is continuously covered on the three shells. During the unfolding and closing process of the three-fold electronic device, the hinge mechanism can drive the flexible display screen to flatten or bend. Since the size of the flexible display screen is larger and there are more folding positions in the three-fold electronic device, the reliability requirements are higher.

[0004] Based on this, how to design the hinge mechanism in the tri-fold electronic device to ensure the structural reliability of the flexible display during the folding process has become a difficult problem that needs to be solved urgently by technical personnel in this field. Summary of the invention

[0005] The present application provides an electronic device to reduce the risk of damage to a flexible display screen and improve the structural reliability of the electronic device.

[0006] The present application provides an electronic device, which includes a first shell, a second shell, a third shell, a first rotating shaft mechanism and a second rotating shaft mechanism. The first shell and the second shell are rotationally connected through the first rotating shaft mechanism, and the second shell and the third shell are rotationally connected through the second rotating shaft mechanism. The first rotating shaft mechanism is arranged opposite to a bendable part of the flexible display screen of the electronic device. When the first rotating shaft mechanism is specifically arranged, it may include a first shell fixing frame, a second shell fixing frame, a main shaft and a first rotating module. The first shell fixing frame and the second shell fixing frame are arranged on opposite sides of the main shaft, the first shell fixing frame is fixedly connected to the first shell, and the second shell fixing frame is fixedly connected to the second shell. The first rotating module includes a first rotating assembly and a second rotating assembly, the first rotating assembly is located between the first shell fixing frame and the second shell fixing frame, and the second rotating assembly is located between the first shell fixing frame and the second shell fixing frame. The first rotating assembly may include a first swing arm, a first support arm and a first connecting member, wherein the first swing arm is rotationally connected to the main shaft, the first swing arm is slidably connected to the first housing fixing frame, the first support arm is rotationally connected to the second housing fixing frame, the first connecting member is located between the first swing arm and the first support arm, the first connecting member is rotationally connected to the first swing arm, and the first connecting member is rotationally connected to the first support arm. In addition, the main shaft is provided with a first trajectory groove, the first connecting member can move along the first trajectory groove to limit the movement trajectory of the first connecting member, so as to limit the movement trajectory of the first swing arm pulling the first support arm through the first connecting member. The second rotating assembly may include a second swing arm, a second support arm and a second connecting member, wherein the second swing arm is rotationally connected to the main shaft, the second swing arm is slidably connected to the second housing fixing frame, the second support arm is rotationally connected to the first housing fixing frame, the second connecting member is located between the second swing arm and the second support arm, the second connecting member is rotationally connected to the second swing arm, and the second connecting member is rotationally connected to the second support arm. In addition, the main shaft is also provided with a second track groove, and the second connecting member can move along the second track groove to limit the movement track of the second connecting member, thereby limiting the movement track of the second swing arm pulling the second support arm through the second connecting member.

[0007] Based on the above-mentioned rotating shaft mechanism of the present application, when the electronic device changes from an unfolded state to a closed state, the first shell fixing frame and the second shell fixing frame move toward each other. When the first shell fixing frame drives the first swing arm to rotate in a clockwise direction around the main axis, the first swing arm can drive the first connecting member to move toward the first swing arm in the first track groove of the main axis, thereby driving the first support arm to rotate in a counterclockwise direction around the main axis; when the second shell fixing frame drives the second swing arm to rotate in a counterclockwise direction around the main axis, the second swing arm can drive the second connecting member to move toward the second swing arm in the second track groove of the main axis, thereby driving the second support arm to rotate in a clockwise direction around the main axis. When the electronic device moves from the closed state to the unfolded state, the first housing fixing frame and the second housing fixing frame move in opposite directions. When the first housing fixing frame drives the first swing arm to rotate counterclockwise around the main axis, the first swing arm can drive the first connecting member to move toward the first support arm in the first track groove of the main axis, thereby driving the first support arm to rotate clockwise around the main axis; when the second housing fixing frame drives the second swing arm to rotate clockwise around the main axis, the second swing arm can drive the second connecting member to move toward the second support arm in the second track groove of the main axis, thereby driving the second support arm to rotate counterclockwise around the main axis. Thus, the folding and unfolding functions of the rotating shaft mechanism can be realized.

[0008] In order to ensure the stability of some existing rotating shaft mechanisms, it is necessary to strengthen the thickness of the rotating assembly connected to the main shaft, which will make the main shaft and the rotating shaft mechanism very thick. If the rotating assembly is forcibly thinned, it is easy to weaken the strength of the rotating assembly, which greatly affects the reliability of the rotating shaft mechanism and reduces the life of the electronic device. The above-mentioned first rotating shaft mechanism of the present application has a simple structure. Through the above-mentioned structural relationship, the first connecting member and the second connecting member can slide in the main shaft to link the first swing arm, the second swing arm, the first support arm and the second support arm on the left and right sides. Therefore, the thickness section of the first connecting member and the second connecting member does not need to be made very thick to shuttle in the first track groove and the second track groove of the main shaft. At the same time, because the first connecting member and the second connecting member are respectively connected to the first swing arm (the second swing arm) and the first support arm (the second support arm), the first connecting member (the second connecting member) has a sufficient length to extend in the direction perpendicular to the axial direction, so it has sufficient strength to ensure the reliability of the rotating shaft mechanism. In this way, the effect of thinning the thickness of the main shaft and the thickness of the whole machine can be achieved, and the reliability of the rotating shaft mechanism can be maintained, making the entire rotating shaft mechanism thin and reliable.

[0009] In addition, since the first connecting member can move along a set track in the first track groove, and the second connecting member can move along a set track in the second track groove, it is possible to avoid uncontrolled movement of the first connecting member and the second connecting member during the entire folding and unfolding process, thereby avoiding random movement of the first shell fixing frame and the second shell fixing frame, thereby ensuring the structural and motion stability of the entire hinge mechanism. In some cases, by reasonably designing the first track groove and the second track groove, the outer tangent of the hinge mechanism can also maintain a constant length during the entire folding and unfolding process, thereby allowing the flexible display screen covering the surface of the hinge mechanism to basically maintain a constant length, thus effectively avoiding squeezing or pulling of the flexible display screen, thereby improving the structural reliability of the flexible display screen, and thereby improving the structural reliability of the electronic device.

[0010] In a possible implementation of the present application, the main shaft includes a first base and a first cover plate, the first cover plate is covered on the first base, the first base is provided with a first arc groove, the first cover plate includes a first protrusion arranged toward the first arc groove, and the gap between the surface of the first protrusion and the groove surface of the first arc groove can be used as a first track groove. In addition, the first connecting member may include a first arc surface and a second arc surface, and when the first shell and the second shell are in an expanded state and a closed state, the first arc surface abuts against the surface of the first protrusion, and the second arc surface abuts against the groove surface of the first arc groove. Thereby, the surface of the first protrusion and the groove surface of the first arc groove limit the first connecting member to the first track groove, so that when the first rotating shaft mechanism is in the expanded state and the closed state, the position of the first connecting member is relatively stable, and no virtual position shaking occurs, so as to improve the reliability of the first rotating shaft mechanism in the above two states.

[0011] In addition, the first base may also be provided with a third arc groove, and the first cover plate may also include a third protrusion provided toward the third arc groove, and the gap between the surface of the third protrusion and the groove surface of the third arc groove serves as the second track groove, and the second connecting member includes a third arc surface and a fourth arc surface, and when the first shell and the second shell are in the expanded state and the closed state, the third arc surface abuts against the surface of the third protrusion, and the fourth arc surface abuts against the groove surface of the third arc groove. Thus, the surface of the third protrusion and the groove surface of the third arc groove limit the second connecting member to the second track groove, so that when the first rotating shaft mechanism is in the expanded state and the closed state, the position of the second connecting member is relatively stable, and no virtual position shaking occurs, so as to improve the reliability of the first rotating shaft mechanism in the above two states.

[0012] In a possible implementation of the present application, when the first shell and the second shell are in a process of changing from an expanded state to a closed state, the first arc surface abuts against the surface of the first protrusion, and a gap exists between the second arc surface and the groove surface of the first arc groove. When the first shell and the second shell are in a process of changing from a closed state to an expanded state, the second arc surface abuts against the groove surface of the first arc groove, and a gap exists between the first arc surface and the surface of the first protrusion. As a result, the movement trajectory of the first connecting member in the first trajectory groove when the first shell and the second shell are in a process of changing from an expanded state to a closed state is different from the movement trajectory of the first connecting member in the first trajectory groove when the first shell and the second shell are in a process of changing from a closed state to an expanded state, which is conducive to improving the flexibility of the design of the first rotating shaft mechanism.

[0013] In addition, when the first shell and the second shell are in the process of changing from the expanded state to the closed state, the third arc surface abuts against the surface of the third protrusion, and there is a gap between the fourth arc surface and the groove surface of the third arc groove. When the first shell and the second shell are in the process of changing from the closed state to the expanded state, the fourth arc surface abuts against the groove surface of the third arc groove, and there is a gap between the third arc surface and the surface of the third protrusion. As a result, the movement trajectory of the second connecting member in the second trajectory groove when the first shell and the second shell are in the process of changing from the expanded state to the closed state is different from the movement trajectory of the second connecting member in the second trajectory groove when the first shell and the second shell are in the process of changing from the closed state to the expanded state, which is conducive to improving the flexibility of the design of the first rotating shaft mechanism.

[0014] In the present application, the movement trajectory of the first connecting member in the first trajectory groove during the process of the first shell and the second shell changing from the expanded state to the closed state can also be made the same as the movement trajectory of the first connecting member in the first trajectory groove during the process of the first shell and the second shell changing from the closed state to the expanded state. Specifically, the spacing between the surface of the first protrusion and the groove surface of the first arc groove is equal at all places. At this time, the first trajectory groove is an equal-width groove. During the process of the first shell and the second shell changing from the expanded state to the closed state and from the closed state to the expanded state, the first arc surface abuts against the surface of the first protrusion, and the second arc surface abuts against the groove surface of the first arc groove, which can help improve the stability of the movement of the first connecting member in the first trajectory groove. Similarly, the spacing between the surface of the third protrusion and the groove surface of the third arc groove at each location may also be equal, so that the second trajectory groove is an equal-width groove. In addition, in the process of the first shell and the second shell moving from the expanded state to the closed state and from the closed state to the expanded state, the third arc surface abuts against the surface of the third protrusion, and the fourth arc surface abuts against the groove surface of the third arc groove, so that the movement trajectory of the second connecting member in the second trajectory groove when the first shell and the second shell move from the expanded state to the closed state is the same as the movement trajectory of the second connecting member in the second trajectory groove when the first shell and the second shell move from the closed state to the expanded state, thereby improving the stability of the second connecting member moving in the second trajectory groove.

[0015] In a possible implementation of the present application, the first arcuate surface of the first connecting member may be a circular arc surface, and the second arcuate surface may also be a circular arc surface. In this case, the sum of the radius of the first arcuate surface and the radius of the second arcuate surface can be equal to the distance between the surface of the first protrusion and the groove surface of the first arcuate groove, so as to improve the smoothness of the movement of the first connecting member in the first trajectory groove.

[0016] Similarly, the third arc surface of the second connecting member can be an arc surface, and the fourth arc surface can also be an arc surface. In this case, the sum of the radius of the third arc surface and the radius of the fourth arc surface can be equal to the distance between the surface of the third protrusion and the groove surface of the third arc groove, so as to improve the smoothness of the movement of the second connecting member in the second track groove.

[0017] In the present application, the first swing arm is rotatably connected to the main shaft, wherein the first base is provided with a second arc groove, the first swing arm comprises a first arc rotating block, the first arc rotating block is accommodated in the second arc groove, and the first arc rotating block can slide along the groove surface of the second arc groove to realize the rotatable connection between the first swing arm and the main shaft. Thus, the first swing arm is rotatably connected to the main shaft by means of a virtual axis, which is conducive to reducing the space occupied by the first swing arm on the main shaft, thereby facilitating the miniaturization design of the first rotating shaft mechanism.

[0018] In addition, the second swing arm is also rotatably connected to the main shaft, the first base is further provided with a fourth arc groove, the second swing arm includes a second arc rotating block, the second arc rotating block is accommodated in the fourth arc groove, and the second arc rotating block can slide along the groove surface of the fourth arc groove to realize the rotatable connection between the second swing arm and the main shaft. Thus, the second swing arm is rotatably connected to the main shaft in the form of a virtual axis, which is conducive to reducing the space occupied by the second swing arm on the main shaft, thereby facilitating the miniaturization design of the first rotating shaft mechanism.

[0019] It can be understood that in the present application, the first shell and the second shell are connected in an outward folding manner, and when the first swing arm is rotatably connected to the main shaft through a virtual shaft or a solid shaft, the axis of rotation of the first swing arm around the main shaft is located on the side of the main shaft away from the flexible display screen. And when the second swing arm is rotatably connected to the main shaft through a virtual shaft or a solid shaft, the axis of rotation of the second swing arm around the main shaft is located on the side of the main shaft away from the flexible display screen.

[0020] In order to improve the reliability of the connection between the first swing arm and the main shaft, in the present application, the first cover plate also includes a second protrusion arranged toward the second arc-shaped groove, and at least a portion of the first arc-shaped rotating block is located between the second protrusion and the second arc-shaped groove, so that the first swing arm can be limited to the main shaft by the second protrusion and the second arc-shaped groove, thereby preventing the first swing arm from escaping from the second arc-shaped groove.

[0021] In addition, the first cover plate also includes a fourth protrusion arranged toward the fourth arc groove, and at least a portion of the second arc-shaped rotating block is located between the fourth protrusion and the fourth arc groove, so that the second swing arm can be limited to the main shaft through the fourth protrusion and the fourth arc groove, thereby preventing the second swing arm from escaping from the fourth arc groove.

[0022] In a possible implementation of the present application, the first connecting member includes a first rotating shaft and a second rotating shaft. The first connecting member and the first swing arm are rotationally connected via the first rotating shaft, and the first connecting member and the first support arm are rotationally connected via the second rotating shaft. The axis of the first rotating shaft is parallel to the axis of the second rotating shaft and does not overlap, so that the first swing arm and the first support arm can achieve mutual pulling movement through the first connecting member.

[0023] The second connecting member includes a third rotating shaft and a fourth rotating shaft. The second connecting member and the second swing arm are rotationally connected via the third rotating shaft. The second connecting member and the second support arm are rotationally connected via the fourth rotating shaft. The axis of the third rotating shaft is parallel to the axis of the fourth rotating shaft and does not overlap, so that the second swing arm and the second support arm can achieve mutual pulling movement through the second connecting member.

[0024] When the first swing arm is rotatably connected to the first connecting member through the first rotating shaft, the first arc-shaped rotating block can be provided with a first mounting groove, and the groove opening of the first mounting groove is arranged toward the second arc-shaped groove. The first rotating shaft is installed in the first mounting groove, and a part of the surface of the first rotating shaft contacts the groove surface of the first mounting groove, and a part of the surface of the first rotating shaft contacts the groove surface of the second arc-shaped groove. By installing the first rotating shaft in the open first mounting groove of the first arc-shaped rotating block to contact the groove surface of the second arc-shaped groove, the size of the first arc-shaped rotating block can be effectively reduced, and the thickness of the first mounting groove does not need to be increased due to the size of the first rotating shaft, which is conducive to the miniaturized design of the first rotating shaft mechanism.

[0025] In addition, the groove surface of the first mounting groove includes a first arc surface, and the surface of the first rotating shaft used to contact the groove surface of the first mounting groove is a second arc surface, and the center of the first arc surface coincides with the center of the second arc surface. In this way, during the process of the first arc rotating block sliding along the groove surface of the second arc groove, the first rotating shaft can rotate relative to the first arc rotating block to realize the rotational connection between the first swing arm and the first rotating shaft.

[0026] The groove surface of the second arc groove is the third arc surface, and the surface of the first rotating shaft for contacting the groove surface of the second arc groove is the fourth arc surface. The center of the third arc surface coincides with the center of the fourth arc surface. In this way, while the first rotating shaft slides along the groove surface of the second arc groove with the first arc rotating block, the first rotating shaft can also rotate relative to the first arc rotating block and the second arc groove, thereby facilitating the movement of the first connecting member relative to the main shaft.

[0027] Similarly, the second arc-shaped rotating block is provided with a second mounting groove, the notch of the second mounting groove is arranged toward the fourth arc-shaped groove, the third rotating shaft is installed in the open second mounting groove to contact the groove surface of the fourth arc-shaped groove, a part of the surface of the third rotating shaft contacts the groove surface of the second mounting groove, and a part of the surface of the third rotating shaft contacts the groove surface of the fourth arc-shaped groove. By installing the third rotating shaft in the second mounting groove of the second arc-shaped rotating block, the size of the second arc-shaped rotating block can be effectively reduced, and the thickness of the second mounting groove does not need to be increased due to the size of the third rotating shaft, which is conducive to the miniaturization design of the first rotating shaft mechanism.

[0028] The second mounting groove may include a fifth arc surface, the surface of the third rotating shaft that contacts the groove surface of the second mounting groove is a sixth arc surface, and the center of the fifth arc surface coincides with the center of the sixth arc surface. In addition, the groove surface of the fourth arc groove is a seventh arc surface, and the surface of the third rotating shaft that contacts the groove surface of the fourth arc groove may be an eighth arc surface, and the center of the seventh arc surface coincides with the center of the eighth arc surface. In this way, while the third rotating shaft slides along the groove surface of the fourth arc groove with the second arc rotating block, the third rotating shaft can also rotate relative to the second arc rotating block and the fourth arc groove, thereby facilitating the movement of the second connecting member relative to the main shaft.

[0029] In a possible implementation of the present application, the first connecting member may include a plurality of first sub-connecting members that are rotatably connected in sequence. In addition, the plurality of first sub-connecting members may be located between the first swing arm and the first support arm, so that the first swing arm may be rotatably connected to an adjacent first sub-connecting member, and the first support arm may be rotatably connected to an adjacent first sub-connecting member. The first swing arm and the first support arm are connected by a plurality of first sub-connecting members, which can effectively improve the speed uniformity of the first swing arm and the first support arm during the rotation process around the main axis, so as to improve the smoothness of the mutual pulling movement of the first swing arm and the first support arm.

[0030] In addition, the second connecting member may include a plurality of second sub-connecting members that are rotatably connected in sequence. The plurality of second sub-connecting members may be located between the second swing arm and the second support arm, so that the second swing arm may be rotatably connected to the adjacent second sub-connecting member, and the second support arm may be rotatably connected to the adjacent second sub-connecting member. The second swing arm and the second support arm are connected by the plurality of second sub-connecting members, which can effectively improve the speed uniformity of the second swing arm and the second support arm during the rotation process around the main axis, so as to improve the smoothness of the mutual pulling movement of the second swing arm and the second support arm.

[0031] In a possible implementation of the present application, the first rotating shaft mechanism also includes a first synchronization component, the first synchronization component includes a first gear connecting rod and a second gear connecting rod, the first gear connecting rod includes a first gear and a first connecting rod, the first gear is rotatably connected to the main shaft, and the first connecting rod is slidably connected to the first shell fixing frame. The second gear connecting rod includes a second gear and a second connecting rod, the second gear is rotatably connected to the main shaft, the second connecting rod is slidably connected to the second shell fixing frame, and the first gear and the second gear are transmission-connected. In this way, during the process of the first shell and the second shell moving from the unfolded state to the closed state, or from the closed state to the unfolded state, the synchronous reverse movement of the first shell fixing frame and the second shell fixing frame can be achieved, which is conducive to improving the stability of the movement of the first rotating shaft mechanism, and can effectively reduce the risk of the flexible display screen of the electronic device being subjected to instantaneous compression or pulling stress, so as to improve the structural reliability of the flexible display screen.

[0032] In the present application, the first gear may be rotatably connected to the main shaft via the fifth rotating shaft, and the second gear may be rotatably connected to the main shaft via the sixth rotating shaft, so as to improve the stability of the first gear connecting rod and the second gear connecting rod rotating around the main shaft.

[0033] In addition, in order to achieve sliding connection between the first connecting rod and the first shell fixing frame, the first shell fixing frame can be further provided with a third sliding groove, and the first connecting rod can be installed in the third sliding groove and can slide in the third sliding groove relative to the first shell fixing frame in a direction toward or away from the base.

[0034] When the second connecting rod is slidably connected to the second housing fixing frame, the second housing fixing frame is further provided with a fourth sliding groove, the second connecting rod is installed in the fourth sliding groove, and can slide in the fourth sliding groove relative to the second housing fixing frame in a direction toward or away from the base.

[0035] In a possible implementation of the present application, the second rotating shaft mechanism includes a second base and a second rotating module, the second rotating module may include a third rotating assembly and a fourth rotating assembly, and the third rotating assembly and the fourth rotating assembly are located on opposite sides of the second base. Wherein, the third rotating assembly includes a third support arm, a third swing arm and a third housing fixing frame. The fourth rotating assembly includes a fourth support arm, a fourth swing arm and a fourth housing fixing frame. The third support arm and the fourth support arm are respectively connected to the second base for rotation, and the third swing arm and the fourth swing arm are respectively connected to the base for rotation. The rotation axis of the third support arm and the rotation axis of the third swing arm are parallel and do not overlap, and the rotation axis of the fourth support arm and the rotation axis of the fourth swing arm are parallel and do not overlap. In addition, the third housing fixing frame is fixedly connected to the second housing, and the third housing fixing frame is provided with a fifth slide extending in the first direction and a sixth slide extending in the second direction. In this way, the third support arm can slide in the fifth slide along the first direction, and the third swing arm can slide in the sixth slide. In addition, the projection of the first direction on the first section and the projection of the second direction on the first section are not parallel. The first section is a reference plane perpendicular to the rotation axis of the third support arm and the rotation axis of the third swing arm. Similarly, the fourth housing fixing frame is provided with a seventh slide groove extending along the third direction and an eighth slide groove extending along the fourth direction, so that the fourth support arm can slide in the seventh slide groove and the fourth swing arm can slide in the eighth slide groove. In addition, the projection of the third direction on the second section is not parallel to the projection of the fourth direction on the second section. The second section is a reference plane perpendicular to the rotation axis of the fourth support arm and the rotation axis of the fourth swing arm.

[0036] In the second rotating shaft mechanism provided in the present application, by making the rotation axes of the third support arm and the third swing arm non-coinciding, and the rotation axes of the fourth support arm and the fourth swing arm non-coinciding, the phase difference of the axis between the support arm and the swing arm arranged on the same side can be achieved during the rotation of the second rotating shaft mechanism, thereby realizing the telescopic movement of the two rotating components, so that the second rotating shaft mechanism can stably support the flexible display screen of the electronic device when it is in the unfolded state, and can form a water drop-shaped screen space that meets the bending requirements of the flexible display screen when the second rotating shaft mechanism is in the closed state. In addition, in the present application, by reasonably designing the opening directions of the fifth and sixth slide grooves of the third shell fixing frame, and the opening directions of the seventh and eighth slide grooves of the fourth shell fixing frame, the rotation angle of the third swing arm and the fourth swing arm relative to the second base can be reduced, so that the wall thickness design of the local structure of the third swing arm and the fourth swing arm can meet the strength requirements, thereby improving the reliability of the structure of the third swing arm and the fourth swing arm. When the second rotating shaft mechanism is applied to electronic equipment, it can effectively avoid the need to design components in the electronic equipment to be thin, so as to avoid the rotation of the third swing arm and the fourth swing arm, thereby improving the reliability of the overall structure of the electronic equipment. In addition, it can also reduce the risk of squeezing the flexible display screen of the electronic equipment caused by the rotation of the third swing arm and the fourth swing arm, thereby reducing the risk of damage to the flexible display screen and extending its service life.

[0037] From the above introduction to the rotation principle of the second rotating shaft mechanism provided by the present application, it can be known that in the present application, by reasonably designing the opening direction of the fifth and sixth slide slots of the third housing fixing frame, the angle of rotation of the third support arm and the third swing arm relative to the second base can be adjusted. For example, the angle of rotation of the third support arm and the third swing arm relative to the second base can be made no greater than 90°. Similarly, by reasonably designing the opening direction of the seventh and eighth slide slots of the second housing fixing frame, the angle of rotation of the fourth support arm and the fourth swing arm relative to the second base can be adjusted. For example, the angle of rotation of the fourth support arm and the fourth swing arm relative to the second base can be made no greater than 90°. In this way, the angle of rotation of the third swing arm and the fourth swing arm relative to the second base can be made smaller, thereby avoiding the other structures of the second rotating shaft mechanism from avoiding the rotation of the third swing arm and the fourth swing arm, which can be conducive to increasing the wall thickness of the local structure of the third swing arm and the fourth swing arm, thereby improving the structural reliability of the third swing arm and the fourth swing arm.

[0038] In the present application, there are multiple ways of rotationally connecting the third swing arm and the fourth swing arm with the second base. For example, the fifth arc groove and the sixth arc groove can be provided on the second base, and a third arc rotating block is provided at one end of the third swing arm for rotationally connecting with the second base, and the third arc rotating block can be accommodated in the fifth arc groove and can rotate along the arc surface of the fifth arc groove. In addition, a fourth arc block is provided at one end of the fourth swing arm for rotationally connecting with the second base, and the fourth arc rotating block can be accommodated in the sixth arc groove and can rotate along the arc surface of the sixth arc groove. In this way, the rotational connection between the third swing arm and the fourth swing arm and the second base can be realized by accommodating the arc rotating block in the corresponding arc groove and rotating the arc rotating block along the arc surface of the arc groove. Thus, the third swing arm and the fourth swing arm are rotationally connected with the second base through the virtual axis, which can effectively reduce the space occupied by the third swing arm and the fourth swing arm on the second base, thereby facilitating the miniaturization design of the second rotating shaft mechanism.

[0039] In a possible implementation of the present application, the sixth slide groove is provided with a second slideway, the third swing arm is provided with a second slider, the second slider is clamped in the second slideway, and the second slider can slide along the second slideway. In this way, the third swing arm can be prevented from falling off from the third housing fixing frame, and the sliding of the third swing arm can be guided by the second slideway, so as to improve the reliability of the third swing arm sliding along the third housing fixing frame.

[0040] In addition, the eighth slide groove is provided with a fourth slideway, the fourth swing arm is provided with a fourth slider, the fourth slider is clamped in the fourth slideway, and the fourth slider can slide along the fourth slideway. In this way, the fourth swing arm can be prevented from falling off from the fourth housing fixing frame, and the fourth slideway can provide guidance for the sliding of the fourth swing arm, so as to improve the reliability of the fourth swing arm sliding along the fourth housing fixing frame.

[0041] In a possible implementation of the present application, the third housing fixing frame includes a first surface, which is a side surface of the third housing fixing frame facing the flexible display screen of the electronic device. The second slider may be a linear slider, in which case the second slideway may be adaptively set as a linear slideway, and the linear slideway has an opening located on the first surface. At this time, when the second housing and the third housing are in a flattened state, the linear slideway may extend from the opening to the direction of the second base, which may be beneficial to improve the smoothness of the second slider sliding along the second slideway, and may effectively reduce the interference of other structures of the second rotating shaft mechanism with the movement of the third swing arm, thereby facilitating the increase of the wall thickness of the third swing arm. In another possible implementation of the present application, the linear slideway may also extend from the opening to the direction away from the second base; or, when the third housing fixing frame also includes a second surface disposed opposite to the first surface, the linear slideway may also extend from the opening to the direction perpendicular to the second surface, so that the setting of the second slideway is more flexible.

[0042] In addition, the fourth shell fixing frame includes a third surface, which is a side surface of the fourth shell fixing frame facing the flexible screen. The fourth slider can be a linear slider, in which case the fourth slide can be adaptively set as a linear slide, and the linear slide has an opening located on the third surface. At this time, when the second shell and the third shell are in the unfolded state, the linear slide can be extended from the opening to the direction of the second base, which can help improve the smoothness of the fourth slider sliding along the fourth slide, and can effectively reduce the interference of other structures of the second rotating shaft mechanism on the movement of the fourth swing arm, thereby facilitating the increase of the wall thickness of the fourth swing arm. In another possible implementation of the present application, the linear slide can also be extended from the opening to the direction away from the second base; or, when the fourth shell fixing frame also includes a fourth surface set opposite to the third surface, the linear slide can also be extended from the opening to the direction perpendicular to the fourth surface, so that the setting of the fourth slide is more flexible.

[0043] In some possible implementations, the second slider may be set as an arc-shaped slider, and the second slide may be adaptively set as an arc-shaped slide, which can reduce the risk of the second slider coming out of the second slide, thereby helping to improve the reliability of the cooperation between the second slider and the second slide. In addition, the fourth slider may be set as an arc-shaped slider, and the fourth slide may be adaptively set as an arc-shaped slide, which can reduce the risk of the fourth slider coming out of the fourth slide, thereby helping to improve the reliability of the cooperation between the fourth slider and the fourth slide. It is understandable that the second slider here may also be other shapes that are adapted to the arc-shaped slide, for example, it may be an overall arc-shaped slider with hollowing, spacing, etc. in the middle part, or it may be some special-shaped sliders, as long as it can fit the shape of the arc-shaped slide to slide.

[0044] In addition, when the second shell and the third shell are in a flattened state, the axis of the arc slide can be located on the side of the arc slide away from the second base. In this way, it is helpful to improve the smoothness of the second slider sliding along the second slide, and improve the smoothness of the fourth slider sliding along the fourth slide, and can effectively reduce the interference of other structures of the second rotating shaft mechanism on the movement of the third swing arm and the fourth swing arm, so as to increase the wall thickness of the third swing arm and the fourth swing arm. In another possible implementation of the present application, when the second shell and the third shell are in a flattened state, the axis of the arc slide can be located on the side of the arc slide facing the second base, so that the setting of the second slide and the fourth slide is more flexible.

[0045] In the present application, the second rotating module may further include a first driving link and a second driving link. The first driving link is disposed between the third support arm and the third swing arm, and the first driving link includes a first connecting portion and a second connecting portion, and the first connecting portion is rotationally connected to the third support arm through the third connecting portion, and the second connecting portion is rotationally connected to the third swing arm through the fourth connecting portion, wherein the axes of the third connecting portion and the fourth connecting portion do not overlap. In addition, the second driving link includes a third connecting portion and a fourth connecting portion, and the third connecting portion is rotationally connected to the fourth support arm through the fifth connecting portion, and the fourth connecting portion is rotationally connected to the fourth swing arm through the sixth connecting portion, wherein the axes of the fifth connecting portion and the sixth connecting portion do not overlap.

[0046] In this way, the degree of combination of the third support arm and the third swing arm, as well as the fourth support arm and the fourth swing arm with the corresponding slide groove can be effectively improved, thereby improving the consistency of the movement of the third support arm and the third swing arm, as well as the fourth support arm and the fourth swing arm, and making the movement of the third support arm and the third swing arm, as well as the fourth support arm and the fourth swing arm smoother. In addition, when the electronic device to which the second rotating shaft mechanism is applied falls in a closed state, the third support arm and the third swing arm can jointly support the corresponding shell in the electronic device, and the fourth support arm and the fourth swing arm can jointly support the corresponding shell in the electronic device, thereby avoiding the two shells from moving relative to the second rotating shaft mechanism, so as to improve the reliability of the overall structure of the electronic device.

[0047] In addition to the above-mentioned arrangement of the first drive link and the second drive link, in another possible implementation, the first drive link is located between the third support arm and the third swing arm, the first drive link includes a first connection portion and a second connection portion, the first connection portion is slidably connected to the third swing arm through the third connection portion, and the second connection portion is fixedly connected to the third support arm. In addition, the second drive link is located between the fourth support arm and the fourth swing arm, the second drive link includes a third connection portion and a fourth connection portion, the third connection portion is slidably connected to the fourth swing arm through the fifth connection portion, and the fourth connection portion is fixedly connected to the fourth support arm.

[0048] In order to realize the sliding connection between the third connecting rod and the third swing arm, the end of the third swing arm facing the third support arm may be provided with a first guide groove, so that the third connecting rod can be inserted into the first guide groove and can slide along the groove surface of the first guide groove. In addition, the first driving connecting rod may be an integral structure with the third support arm, thereby simplifying the structure of the second rotating module. Similarly, in order to realize the sliding connection between the fifth connecting rod and the fourth swing arm, the end of the fourth swing arm facing the fourth support arm may be provided with a second guide groove, so that the fifth connecting rod can be inserted into the second guide groove and can slide along the groove surface of the second guide groove. In addition, the second driving connecting rod may be an integral structure with the second support arm, thereby simplifying the structure of the second rotating module.

[0049] The first drive link and the second drive link adopt the setting method provided by the implementation method, and the first guide groove and the second guide groove can be reasonably designed to improve the combination degree of the third support arm and the third swing arm, as well as the fourth support arm and the fourth swing arm with the corresponding slide groove, thereby improving the consistency of the movement of the third support arm and the third swing arm, as well as the fourth support arm and the fourth swing arm, and making the movement of the third support arm and the third swing arm, as well as the fourth support arm and the fourth swing arm smoother. In addition, when the electronic device using the second rotating shaft mechanism falls in a closed state, the third support arm, the third swing arm and the first drive link can jointly support the corresponding shell in the electronic device, and the fourth support arm, the fourth swing arm and the second drive link can jointly support the corresponding shell in the electronic device, thereby avoiding causing the two shells to have a large instantaneous displacement relative to the second rotating shaft mechanism, so as to improve the reliability of the overall structure of the electronic device.

[0050] In a possible implementation of the present application, the second hinge mechanism may further include a first support plate and a second support plate, the first support plate and the second support plate are respectively arranged on both sides of the second base, the first support plate is rotatably connected to the third housing fixing frame, and the first support plate is slidably connected to the third support arm and / or the third swing arm. The second support plate is rotatably connected to the fourth housing fixing frame, and the second support plate is slidably connected to the fourth support arm and / or the fourth swing arm. In addition, when the third housing fixing frame and the fourth housing fixing frame rotate toward each other, the end of the first support plate close to the second base moves in a direction away from the second base, and the end of the second support plate close to the second base moves in a direction away from the second base, so that a triangular screen space can be formed between the two support plates and the second base. In this way, when the second hinge mechanism is used for an electronic device, and the electronic device is in a closed state, the bent portion of the flexible display screen can be accommodated in the screen space and presents a water drop shape, which can avoid pulling or squeezing the flexible screen, thereby reducing the risk of damage to the flexible display screen.

[0051] In order to realize the rotation of the first support plate around the third shell fixing frame, a first rotation groove can be provided on the third shell fixing frame, and a first rotation part can be provided on the first support plate. In this way, the first rotation part can be installed in the first rotation groove, and the first rotation part can be rotated along the groove surface of the first rotation groove. Similarly, in order to realize the rotation of the second support plate around the fourth shell fixing frame, a second rotation groove can be provided on the fourth shell fixing frame, and a second rotation part can be provided on the second support plate. In this way, the second rotation part can be installed in the second rotation groove, and the second rotation part can be rotated along the groove surface of the second rotation groove.

[0052] From the above introduction to the second rotating shaft mechanism, it can be known that when the two shell fixing frames rotate toward each other, the two support plates rotate around the corresponding shell fixing frames to form a screen space. In order to form a screen space that meets the bending requirements of the flexible display screen between the two support plates, the motion trajectory of the support plate can be reasonably designed. In a possible implementation of the present application, the first support plate can be provided with a first guide portion, and a third track groove is provided on the first guide portion. In addition, the third swing arm can be provided with a first guide structure, which can be inserted in the third track groove and can slide along the third track groove. And / or, the first guide structure is provided on the third support arm, and the first guide structure is inserted in the third track groove and can slide along the third track groove. Thereby, in the process of the third swing arm and / or the third support arm rotating around the second base, the first support plate can be driven to rotate around the third shell fixing frame, and the motion trajectory of the first support plate can be adjusted by sliding the first guide structure in the third track groove.

[0053] Similarly, the second support plate may be provided with a second guide portion, and a fourth track groove may be provided on the second guide portion. In addition, the fourth swing arm may be provided with a second guide structure, and the second guide structure may be inserted in the fourth track groove and may slide along the fourth track groove. And / or, the second guide structure is provided on the fourth support arm, and the second guide structure is inserted in the fourth track groove and may slide along the fourth track groove. Thus, in the process of the fourth swing arm and / or the fourth support arm rotating around the second base, the second support plate may be driven to rotate around the fourth shell fixing frame, and the movement trajectory of the second support plate may be adjusted by sliding the second guide structure in the fourth track groove. Thus, a screen-holding space that meets the screen-holding requirements may be formed between the two support plates.

[0054] In a possible implementation of the present application, the electronic device further includes a flexible display screen, the flexible display screen continuously covers the first housing, the first rotating shaft mechanism, the second housing, the second rotating shaft mechanism and the third housing, and the flexible display screen is fixedly connected to the first housing, the second housing and the third housing. When the electronic device provided by the present application is in a flattened state, the first housing, the first rotating shaft mechanism, the second housing, the second rotating shaft mechanism and the third housing can jointly play a role of flattening and supporting the flexible display screen, thereby ensuring the integrity of the form of the electronic device in the unfolded state, and is conducive to improving the light and shadow of the flexible display screen. In the process of the electronic device from the flattened state to the closed state, the first housing and the second housing rotate toward each other to drive part of the flexible display screen to rotate, and the second housing and the third housing rotate toward each other to drive another part of the flexible display screen to rotate, and the displacement trend of the stack of the flexible display screen under the action of the first housing and the second housing is consistent with the displacement trend direction of the stack of the flexible display screen under the action of the second housing and the third housing, which is conducive to the balance of the displacement amount of the stack of the flexible display screen, thereby reducing the risk of failure of the flexible display screen due to the displacement of the stack, so as to extend the service life of the flexible display screen and improve the structural reliability of the electronic device as a whole. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] Figure 1 A schematic diagram of a structure of an electronic device provided in an embodiment of the present application in a flattened state;

[0056] Figure 2 for Figure 1 A simplified diagram of a cross-sectional view at AA of the electronic device shown in FIG.

[0057] Figure 3 for Figure 1 A schematic diagram of the structure of the electronic device shown in FIG. 1 in a closed state;

[0058] Figure 4 A schematic diagram of a structure of an electronic device in an intermediate state provided by an embodiment of the present application;

[0059] Figure 5 Another structural schematic diagram of an electronic device in an intermediate state provided by an embodiment of the present application;

[0060] Figure 6 Another structural schematic diagram of an electronic device in an intermediate state provided by an embodiment of the present application;

[0061] Figure 7 Another structural schematic diagram of an electronic device in an intermediate state provided by an embodiment of the present application;

[0062] Figure 8 A schematic diagram showing a connection relationship between a first housing, a second housing and a first rotating shaft mechanism provided in an embodiment of the present application;

[0063] Fig. 9 A schematic diagram of a partial structure of a first rotating shaft mechanism provided in an embodiment of the present application;

[0064] Fig.10 for Fig. 9 An exploded view of the first rotating shaft mechanism shown in ;

[0065] Fig.11 A cross-sectional view of a first connecting member of a first rotating shaft mechanism provided in an embodiment of the present application when the electronic device is in an unfolded state;

[0066] Fig.12 A schematic diagram of the structure of a main shaft provided in an embodiment of the present application;

[0067] Fig.13 for Fig.12 A structural schematic diagram of the first base of the main shaft shown;

[0068] Fig.14 for Fig.12 A schematic structural diagram of a first cover plate of the main shaft shown;

[0069] Fig.15 A cross-sectional view of the first connecting member of the first rotating shaft mechanism provided in an embodiment of the present application when the electronic device is in a closed state;

[0070] Fig.16 A schematic structural diagram of a first connecting member provided in an embodiment of the present application;

[0071] Fig.17 A schematic diagram of the assembly structure of the first connecting member and the main shaft provided in an embodiment of the present application;

[0072] Fig.18 for Fig. 9 BB cross-sectional view of the structure shown in;

[0073] Fig.19 A cross-sectional view of a first swing arm of a first rotating shaft mechanism provided in an embodiment of the present application when the first housing and the second housing are in a closed state;

[0074] Fig. 20 A schematic diagram of the structure of a first rotating assembly provided in an embodiment of the present application;

[0075] Fig.21 A schematic diagram of the structure of a first swing arm provided in an embodiment of the present application;

[0076] Fig. 22 A schematic diagram of the motion mechanism of the first rotating shaft mechanism provided in an embodiment of the present application;

[0077] Fig.23A schematic diagram of a partial structure of a first rotating shaft mechanism provided in an embodiment of the present application;

[0078] Fig.24 A cross-sectional view of a first rotating shaft mechanism provided in an embodiment of the present application at a synchronization component when the first housing and the second housing are in an unfolded state;

[0079] Fig.25 A cross-sectional view of a first rotating shaft mechanism provided in an embodiment of the present application at a synchronization component when the first housing and the second housing are in a closed state;

[0080] Fig.26 A schematic diagram showing another connection relationship between the first housing, the second housing and the first rotating shaft mechanism provided in an embodiment of the present application;

[0081] Fig. 27 for Fig.26 A schematic diagram of the structure when the structure shown is in a closed state;

[0082] Fig.28 A schematic diagram of an exploded structure of a second rotating shaft mechanism provided in an embodiment of the present application;

[0083] Fig.29 An exploded view of the local structure of the second rotating shaft mechanism provided in an embodiment of the present application;

[0084] Fig.30 A schematic diagram of a partial structure of a second rotating shaft mechanism provided in an embodiment of the present application;

[0085] Fig.31 A schematic diagram of the structure of a third swing arm provided in an embodiment of the present application;

[0086] Fig.32 A schematic diagram of a partial structure of a second rotating shaft mechanism provided in an embodiment of the present application;

[0087] Fig.33 A schematic diagram of the structure of a third housing fixing frame provided in an embodiment of the present application;

[0088] Fig.34a A schematic diagram of the structure of the second rotating shaft mechanism provided in an embodiment of the present application in a flattened state;

[0089] Fig.34b A schematic diagram of a first cross section provided in an embodiment of the present application;

[0090] Fig.34c A schematic diagram of the structure of the second housing and the third housing provided in an embodiment of the present application in an intermediate state;

[0091] Fig.34d A schematic diagram of the structure of the second housing and the third housing provided in an embodiment of the present application in a closed state;

[0092] Fig.35 A schematic diagram of a mechanism for sliding the third support arm and the third swing arm relative to the third housing fixing frame provided in an embodiment of the present application;

[0093] Fig.36 Another structural schematic diagram of the third swing arm provided in an embodiment of the present application;

[0094] Fig.37a A schematic diagram of the structure of the second shell and the third shell provided in the embodiment of the present application when they are in a flattened state;

[0095] Figure 37b Another schematic diagram of the first cross section provided in an embodiment of the present application;

[0096] Fig.37c Another schematic diagram of the first cross section provided in an embodiment of the present application;

[0097] Fig.37d Another schematic diagram of the first cross section provided in an embodiment of the present application;

[0098] Fig.38 A schematic diagram of the structure when the second shell and the third shell provided in the embodiment of the present application are in an intermediate state;

[0099] Fig.39 A schematic diagram of the structure when the second shell and the third shell provided in the embodiment of the present application are in a closed state;

[0100] Fig.40a A schematic diagram of the connection structure between the third support arm and the third swing arm provided in an embodiment of the present application;

[0101] Fig.40b A schematic diagram of the structure of a first driving connecting rod provided in an embodiment of the present application;

[0102] Fig.40c A schematic diagram of the structure of the third support arm provided in an embodiment of the present application;

[0103] Fig.41 for Fig.40a A cross-sectional view at CC of the structure shown in FIG.

[0104] Fig.42 for Fig.40a A cross-sectional view at DD of the structure shown in FIG.

[0105] Fig.43 Another structural schematic diagram of the third swing arm provided in an embodiment of the present application;

[0106] Fig.44a A schematic diagram of another connection structure between the third support arm and the third swing arm provided in an embodiment of the present application;

[0107] Figure 44b Another structural schematic diagram of the third swing arm provided in an embodiment of the present application;

[0108] Fig.44c A schematic diagram of the structure of the connection between the first driving connecting rod and the third supporting arm provided in an embodiment of the present application;

[0109] Fig.45 A schematic diagram of the structure of the first support plate provided in an embodiment of the present application;

[0110] Fig.46 A schematic diagram of a structure in which a first support plate provided in an embodiment of the present application supports a flexible display screen;

[0111] Fig.47 A cross-sectional view of a second rotating shaft mechanism provided in an embodiment of the present application;

[0112] Fig.48 A cross-sectional view of the second housing and the third housing provided in the embodiment of the present application when they are in a closed state;

[0113] Fig.49 Another partial structural schematic diagram of the second rotating shaft mechanism provided in an embodiment of the present application;

[0114] Fig.50 for Fig.49 A cross-sectional view of the second rotating shaft mechanism 2 at EE shown in FIG.

[0115] Fig.51 A simplified structural diagram of an electronic device provided in an embodiment of the present application when the second housing and the third housing are in a flattened state;

[0116] Fig.52 for Fig.51 A schematic diagram of the structure when the structure shown is in a closed state;

[0117] Fig.53 A schematic diagram showing another connection relationship between the second housing, the third housing and the second rotating shaft mechanism provided in an embodiment of the present application;

[0118] Fig.54 for Fig.53 A schematic diagram of the structure when the structure shown is in a closed state;

[0119] Fig.55a for Figure 1 A simplified diagram of another cross-sectional view of the electronic device at AA shown;

[0120] Fig.55b for Fig.55a A schematic diagram of the stacked structure of a flexible display screen of an electronic device shown;

[0121] Fig.56a for Figure 3 A cross-sectional view of the electronic device at FF shown;

[0122] Fig.56b for Fig.56a A schematic diagram of the stacked structure of a flexible display screen of an electronic device shown;

[0123] Fig.57a for Figure 4 A cross-sectional view of the electronic device shown at GG;

[0124] Fig.57b for Fig.57a A schematic diagram of the stacked structure of a flexible display screen of an electronic device shown;

[0125] Fig.58a for Figure 5 A cross-sectional view of the electronic device shown at II;

[0126] Fig.58b for Fig.58a A schematic diagram of the stacked structure of a flexible display screen of an electronic device shown;

[0127] Fig.59a for Figure 6 A cross-sectional view of the electronic device shown at JJ;

[0128] Fig.59b for Fig.59a A schematic diagram of the stacked structure of a flexible display screen of an electronic device shown;

[0129] Fig.60a A schematic diagram of a laminated structure of a flexible display screen when an existing electronic device is in a closed state;

[0130] Fig.60b The present invention is a schematic diagram of another laminated structure of a flexible display screen when an existing electronic device is in a closed state.

[0131] Reference numerals:

[0132] 1-first rotating shaft mechanism; 1a-supporting surface of the first rotating shaft mechanism; 101-first rotating module; 1011-first rotating assembly;

[0133] 10111-first swing arm; 101111-first arc-shaped rotating block; 1011111-first recessed portion; 1011112-first mounting groove;

[0134] 10111121-first arc surface; 10112-first support arm; 10113-first connecting member; 101131-first rotating shaft;

[0135] 1011311- second arc surface; 1011312- fourth arc surface; 101132- second rotation axis; 101133- first arc surface;

[0136] 101134-second curved surface;

[0137] 1012-second rotating assembly; 10121-second swing arm; 101211-second arc-shaped rotating block; 1012111-second recessed portion;

[0138] 1012112-second mounting groove; 10121121-fifth arc surface; 10122-second supporting arm; 10123-second connecting member;

[0139] 101231-third rotating axis; 1012311-sixth arc surface; 1012312-eighth arc surface; 101232-fourth rotating axis;

[0140] 101233-third curved surface; 101234-fourth curved surface;

[0141] 1013-first housing fixing frame; 10131-first slide slot; 10132-first mounting portion; 10133-third slide slot;

[0142] 1014-second housing fixing frame; 10141-second slide slot; 10142-second mounting portion; 10143-fourth slide slot;

[0143] 102-main shaft; 1021-first base; 10211-first arc groove; 102111-groove surface of the first arc groove;

[0144] 10212 - second arc groove; 102121 - third arc surface; 10213 - third arc groove; 102131 - groove surface of the third arc groove;

[0145] 10214- fourth arc groove; 102141- seventh arc surface;

[0146] 1022-first cover plate; 10221-first protrusion; 102211-surface of the first protrusion; 10222-second protrusion;

[0147] 102221 - surface of the second protrusion; 10223 - first plug-in portion; 10224 - third protrusion; 102241 - surface of the third protrusion;

[0148] 10225 - fourth protrusion; 102251 - surface of the fourth protrusion;

[0149] 1023 - first track groove; 1024 - second track groove;

[0150] 103-first synchronization assembly; 1031-first gear connecting rod; 10311-first gear; 10312-first connecting rod;

[0151] 10313-fifth rotating shaft; 1032-second gear connecting rod; 10321-second gear; 10322-second connecting rod;

[0152] 10323-sixth rotating shaft; 104-first under-screen support member; 105-second under-screen support member;

[0153] 2-second rotating shaft mechanism; 2a-supporting surface of the second rotating shaft mechanism; 201-second rotating module; 201a-third rotating assembly;

[0154] 201b- fourth rotating assembly; 2012- third supporting arm;

[0155] 20121-first sliding block; 20122-first mounting hole; 2013-third swing arm; 20131-third arc-shaped rotating block;

[0156] 20132-second sliding block; 20133-first guide structure; 20134-first guide groove; 20135-second mounting hole;

[0157] 2014-second cover plate; 20141-first arc-shaped protrusion; 20142-second arc-shaped protrusion;

[0158] 2015-third housing fixing frame; 2015a-first surface; 2015b-second surface; 20151-fifth slide groove;

[0159] 201511-first slideway; 20152-sixth slideway; 201521-second slideway; 20153-first rotating groove;

[0160] 2016a-first driving connecting rod; 20161-first connecting portion; 20162-second connecting portion; 20163-third connecting rod;

[0161] 20164-fourth connecting rod; 2016b-second driving connecting rod;

[0162] 2017-second synchronization assembly; 20171a-first driving gear; 20171b-second driving gear; 20172-driven gear;

[0163] 20173-intermediate shaft;

[0164] 2018-damping assembly; 20181-elastic member; 20182-conjoined cam; 20183-stopper;

[0165] 20184-circlip; 2019-fourth housing fixing frame; 2019a-third surface; 2019b-fourth surface; 20191-seventh slide groove;

[0166] 201911-the third slide; 20192-the eighth slide; 201921-the fourth slide; 20193-the second rotating groove;

[0167] 2020-fourth support arm; 202001-third slider; 2021-fourth swing arm; 202101-fourth arc-shaped rotating block;

[0168] 202102-fourth slider; 202103-second guide structure;

[0169] 202-first support plate; 202a-first plate surface; 202b-second plate surface; 20201-first rotating part;

[0170] 20202-first guide portion; 202021-third track groove;

[0171] 203-second support plate; 2031-second rotating part; 2032-second guide part; 20321-fourth track groove;

[0172] 204-screen space; 205-end cover; 206-second base;

[0173] 2061-pin shaft; 2062-damping bracket;

[0174] 2063-fifth arc groove; 2064-sixth arc groove;

[0175] 3-first shell; 3a-support surface of the first shell;

[0176] 4-second shell; 4a-support surface of the second shell;

[0177] 5-third shell; 5a-support surface of the third shell;

[0178] 6-flexible display screen; 601-first part; 602-second part; 7-camera module. DETAILED DESCRIPTION

[0179] In order to make the purpose, technical scheme and advantages of the present application clearer, the embodiments of the present application will be further described in detail below in conjunction with the accompanying drawings. However, the example implementation can be implemented in various forms and should not be construed as being limited to the implementations set forth herein. The same reference numerals in the figures represent the same or similar structures, and thus their repeated description will be omitted. The words expressing position and direction described in the embodiments of the present application are all illustrated by taking the accompanying drawings as examples, but changes may be made as needed, and the changes made are all included in the scope of protection of the present application. The drawings of the embodiments of the present application are only used to illustrate the relative position relationship and do not represent the true proportion.

[0180] It should be noted that specific details are described in the following description to facilitate understanding of the present application. However, the embodiments of the present application can be implemented in a variety of other ways different from those described herein, and those skilled in the art can make similar generalizations without violating the connotation of the embodiments of the present application. Therefore, the present application is not limited to the specific implementation methods disclosed below.

[0181] The electronic device provided in the embodiment of the present application includes a mobile phone, a personal digital assistant (PDA), a tablet computer or other devices with a foldable function. In order to facilitate understanding of the electronic device provided in the embodiment of the present application, you can first refer to Figure 1 , Figure 1 This is a schematic diagram of the structure of an electronic device in a flattened state provided by an embodiment of the present application. Figure 1 In the illustrated embodiment, the electronic device is a tri-fold mobile phone as an example for explanation, while in other embodiments of the present application, the electronic device can also be set to a four-fold, five-fold or more-folded form, and its specific setting method is similar to the tri-fold electronic device.

[0182] You can continue to refer to Figure 1 The electronic device may include three housings, two rotating shaft mechanisms and a flexible display screen 6. For the convenience of explanation, the two rotating shaft mechanisms are named as the first rotating shaft mechanism 1 and the second rotating shaft mechanism 2, and the three housings are named as the first housing 3, the second housing 4 and the third housing 5. The first rotating shaft mechanism 1 is located between the first housing 3 and the second housing 4, and the first housing 3 and the second housing 4 are connected in rotation through the first rotating shaft mechanism 1. The second rotating shaft mechanism 2 is located between the second housing 4 and the third housing 5, and the second housing 4 and the third housing 5 are connected in rotation through the second rotating shaft mechanism 2. When the electronic device is in use, the first housing 3 and the second housing 4 can rotate toward or away from each other under the action of the first rotating shaft mechanism 1, and the second housing 4 and the third housing 5 can rotate toward or away from each other under the action of the second rotating shaft mechanism 2, so that the electronic device can be closed and unfolded according to different usage scenarios.

[0183] like Figure 1 As shown, when the electronic device is in a flattened state, the first housing 3, the first rotating shaft mechanism 1, the second housing 4, the second rotating shaft mechanism 2, and the third housing 5 are sequentially arranged side by side.

[0184] Reference Figure 2 , Figure 2 for Figure 1 A simplified diagram of a cross-sectional view at AA of the electronic device shown in FIG. In the electronic device, the first housing 3, the second housing 4, the third housing 5, the first hinge mechanism 1, and the second hinge mechanism 2 respectively have support surfaces arranged toward the flexible display screen 6, and the flexible display screen 6 can continuously cover the support surface 3a of the first housing, the support surface 1a of the first hinge mechanism, the support surface 4a of the second housing, the support surface 2a of the second hinge mechanism, and the support surface 5a of the third housing. The first hinge mechanism 1 and the second hinge mechanism 2 are respectively arranged corresponding to a bendable portion of the flexible display screen 6, and the flexible display screen 6 is respectively fixedly connected to the support surface 3a of the first housing, the support surface 4a of the second housing, and the support surface 5a of the third housing, and the connection method includes but is not limited to bonding. When the electronic device is in a flattened state, the support surface 3a of the first housing, the support surface 1a of the first hinge mechanism, the support surface 4a of the second housing, the support surface 2a of the second hinge mechanism, and the support surface 5a of the third housing can be connected to form a flat support surface, thereby playing a role in flattening the flexible display screen 6.

[0185] It can be understood that when the electronic device is in a flat state, the flexible display screen 6 is completely exposed on the outside of the electronic device, and since the entire flexible display screen 6 is in a flat state at this time, the electronic device can meet the user's needs for large-screen display in this flat state.

[0186] Reference Figure 3 , Figure 3 for Figure 1 , a schematic diagram of the structure of the electronic device in a closed state is shown in FIG. In the embodiment of the present application, when the electronic device is in a closed state, the first shell 3 and the third shell 5 can be folded on both sides of the second shell 4, respectively. This folding method can be regarded as a "Z"-shaped folding or an "S"-shaped folding. At this time, the portion of the flexible display screen 6 corresponding to the first shell 3 can be exposed on the folded outer side of the electronic device, while the portion of the flexible display screen 6 corresponding to the second shell 4 and the third shell 5 is hidden on the folded inner side of the electronic device. That is, the portion of the flexible display screen 6 corresponding to the first shell 3 can serve as an appearance surface of the electronic device in a closed state.

[0187] In the electronic device provided in the embodiment of the present application, the sizes of the first shell 3, the second shell 4 and the third shell 5 can be adjusted so that when the electronic device is in a closed state, a larger area of ​​the flexible display screen 6 can still be exposed outside the electronic device, so that the electronic device can still perform multiple functions in the folded state, which can effectively reduce unnecessary folding operations of the electronic device, thereby helping to extend the service life of the flexible display screen 6 and each hinge mechanism.

[0188] Figure 4 for Figure 1 A schematic diagram of a structure of an electronic device in an intermediate state. Figure 4 In the state shown, the flexible display screen 6 is completely exposed to the outside of the electronic device, but the portion of the flexible display screen 6 corresponding to the first shell 3 is opposite to the portion of the flexible display screen 6 corresponding to the second shell 4 and the third shell 5. At this time, the function of one-sided display or double-sided display of the electronic device can be realized according to user needs.

[0189] In addition, refer to Figure 5 , Figure 5 for Figure 1 Another structural schematic diagram of the electronic device shown in FIG. is in an intermediate state. Figure 4 The difference is that in Figure 5 In the electronic device, the first shell 3 and the second shell 4 are in a flattened state, and the third shell 5 is in a closed state relative to the second shell 4. In this state, the portion of the flexible display screen 6 corresponding to the first shell 3 is exposed to the outside of the electronic device, while the portion of the flexible display screen 6 corresponding to the second shell 4 and the third shell 5 is hidden inside the folded electronic device. In other words, the portion of the flexible display screen 6 corresponding to the first shell 3 and the side of the third shell 5 facing away from the flexible display screen 6 face the same side of the electronic device.

[0190] The electronic device provided in the embodiment of the present application further includes a camera module 7, which can be arranged in the third housing 5, and the main camera of the camera module 7 is exposed on the side of the third housing 5 away from the flexible display screen 6. Figure 5 In the state shown, the user can turn on the camera through the portion of the flexible display screen 6 corresponding to the first shell 3, and use the main camera to take selfies, which can improve the convenience of the user taking selfies with the main camera, thereby improving the user's experience.

[0191] Figure 6 for Figure 1 Another structural schematic diagram of the electronic device shown in FIG. Figure 6In the state shown, the first shell 3 and the second shell 4 are in a flattened state, the third shell 5 is in an intermediate state relative to the second shell 4, and at this time the angle between the support surface 300a of the third shell 5 and the support surface of the second shell 4 is greater than or equal to 90°. In this state, the flexible display screen 6 is completely exposed on the folded outer side of the electronic device, and because the three shells of the electronic device can form a triangular support structure, the three shells can be in a bracket form to provide a stable support force for the entire electronic device.

[0192] It is understandable that when electronic equipment is in Figure 6 In the state shown, the portion of the flexible display screen 6 corresponding to the first shell 3 and the second shell 4 and the portion of the flexible display screen 6 corresponding to the third shell 5 can simultaneously display the same content, so that the electronic device can be synchronously displayed to different users in face-to-face positions, which is conducive to improving the user experience.

[0193] Reference Figure 7 , Figure 7 Another structural schematic diagram of an electronic device in an intermediate state provided by an embodiment of the present application. In this state, the angle between the support surface of the first shell 3 and the support surface of the second shell 4 is greater than or equal to 90°, and the angle between the support surface of the third shell 5 and the support surface of the second shell 4 is greater than 90°. At this time, the flexible display screen 6 is completely exposed to the outside of the electronic device, and since a triangular support structure can be formed between the second shell 4 and the third shell 5, it can provide a stable support force for the entire electronic device.

[0194] In electronic equipment Figure 7 In the state shown, the portion of the flexible display screen 6 corresponding to the first housing 3 and the portion of the flexible display screen 6 corresponding to the second housing 4 can simultaneously display the same content, so that the electronic device can be displayed synchronously to different users who are located face to face. The portion of the flexible display screen 6 corresponding to the third housing 5 can be used as a keyboard area, so that the user on one side of the electronic device can use the keyboard to perform input operations, which is conducive to improving the user experience.

[0195] From the above introduction to the application of the electronic device provided by this application in different scenarios, it can be understood that the electronic device can meet the application needs of users in a variety of scenarios, which can help improve the user experience and further enhance the market competitiveness of the electronic device.

[0196] It is understandable that whether the electronic device can meet the folding requirements in different application scenarios depends largely on the structural design of the first hinge mechanism 1 and the second hinge mechanism 2. In the present application, the specific design of the first hinge mechanism 1 and the second hinge mechanism 2 is not limited. As long as the first hinge mechanism 1 can realize the movement of the first shell 3 and the second shell 4 towards or away from each other, and the second hinge mechanism 2 can realize the movement of the second shell 4 and the third shell 5 towards or away from each other, and can ensure the uniformity of the force on the flexible display screen 6, it is within the scope of the embodiments of the present application.

[0197] Next, an exemplary design of the first rotating shaft mechanism 1 of the electronic device provided in the embodiment of the present application is described in detail.

[0198] Reference Figure 8 , Figure 8 A schematic diagram showing a connection relationship between the first shell 3, the second shell 4 and the first rotating shaft mechanism 1 of the electronic device provided in the embodiment of the present application in the flattened state. The first rotating shaft mechanism 1 includes a first shell fixing frame 1013, a second shell fixing frame 1014 and a main shaft 102, the first shell fixing frame 1013 and the second shell fixing frame 1014 are respectively arranged on opposite sides of the main shaft 102, the first shell fixing frame 1013 is rotatably connected to the main shaft 102, the second shell fixing frame 1014 is rotatably connected to the main shaft 102, the first shell fixing frame 1013 is fixedly connected to the first shell 3, and the second shell fixing frame 1014 is fixedly connected to the second shell 4, thereby realizing the rotational connection between the first shell 3 and the first rotating shaft mechanism 1, and the rotational connection between the second shell 4 and the first rotating shaft mechanism 1.

[0199] In order to realize the rotation connection between the first housing fixing frame 1013 and the second housing fixing member 1014 and the main shaft 102, the first rotating shaft mechanism 1 further includes a first rotating module 101. Fig. 9 , Fig. 9A partial structural schematic diagram of the first hinge mechanism 1 provided in an embodiment of the present application. In the present application, the first hinge mechanism 1 may include a first rotation module 101. The number of first rotation modules 101 in the first hinge mechanism 1 is not limited in the present application. The first hinge mechanism 1 may include only one first rotation module 101, or may include multiple first rotation modules 101. When the first hinge mechanism 1 includes multiple first rotation modules 101, the multiple first rotation modules 101 may be arranged at intervals along the length direction of the first hinge mechanism 1. In the present application, the length direction of the first hinge mechanism 1 is the extension direction of the axis of rotation of the first shell 3 and the second shell 4 around the first hinge mechanism 1. It can be understood that the first shell 3 and the second shell 4 are rotatably connected by multiple first rotation modules 101, which can effectively improve the stability of the rotation of the first shell 3 and the second shell 4 of the electronic device relative to the first hinge mechanism 1.

[0200] In order to understand the structure of the first rotating module 101, please refer to Fig.10 , Fig.10 for Fig. 9 The first rotating module 101 may include a first rotating assembly 1011 and a second rotating assembly 1012. In addition, in the present application, the main shaft may be used as a bearing component of the first rotating assembly 1011 and the second rotating assembly 1012.

[0201] It is worth mentioning that in the embodiment of the present application, when there are multiple first rotating modules 101, the first rotating components 1011 and the second rotating components 1012 of the multiple first rotating modules 101 can all use the same main shaft as the bearing component to improve the integration degree of the first rotating shaft mechanism 1. In some other possible embodiments of the present application, the first rotating shaft mechanism 1 can be provided with a main shaft corresponding to each first rotating module 101, so that the first rotating components 1011 and the second rotating components 1012 of each first rotating module 101 use the corresponding main shaft as the bearing component.

[0202] You can continue to refer to Fig.10 , the first rotating assembly 1011 may include a first swing arm 10111, a first support arm 10112 and a first connecting member 10113. The first connecting member 10113 is located between the first swing arm 10111 and the first support arm 10112, the first connecting member 10113 is rotationally connected to the first swing arm 10111, and the first connecting member 10113 is rotationally connected to the first support arm 10112, so that the first swing arm 10111 and the first support arm 10112 perform mutual pulling motion through the first connecting member 10113. Based on this, it can be understood that the motion trajectory of the first connecting member 10113 plays a key role in the motion trajectory of the first rotating assembly 1011.

[0203] In the present application, the first connecting member 10113 can move relative to the main shaft 102. Fig.11 , Fig.11 The first rotating shaft mechanism 1 provided in the embodiment of the present application is a cross-sectional view of the first connecting member 10113 when the first shell and the second shell are in a flattened state. The main shaft 102 may be provided with a first track groove 1023, and the first connecting member 10113 may move along the first track groove 1023, thereby limiting the movement track of the first connecting member 10113.

[0204] Reference Fig.12 , Fig.12 A schematic diagram of the structure of the main shaft 102 provided in an embodiment of the present application. The main shaft may include a first base 1021 and a first cover plate 1022. The first cover plate 1022 is covered on the first base 1021, and the outer surface of the first cover plate 1022 may serve as the appearance surface of the first rotating shaft mechanism 1. Fig.13 , Fig.13 for Fig.12 A schematic diagram of the structure of the first base 1021 of the main shaft 102 is shown. The first base 1021 may be provided with a first arc groove 10211, and refer to Fig.11 and Fig.13 , the first connecting member 10113 is accommodated in the first arc-shaped groove 10211, and the first connecting member 10113 can slide along the groove surface 102111 of the first arc-shaped groove. Fig.14 , Fig.14 for Fig.12 A schematic diagram of the structure of the first cover plate 1022 of the main shaft 102 is shown, and Fig.14 It is used to show the structure of the first cover plate 1022 facing the first base 1021. The first cover plate 1022 includes a first protrusion 10221, such as Fig.11 As shown, the first protrusion 10221 can be arranged toward the first arc-shaped groove 10211 , and there is a gap between the surface 102211 of the first protrusion and the groove surface 102111 of the first arc-shaped groove, and the gap serves as the first track groove 1023 .

[0205] Fig.15 The cross-sectional view of the first connecting member 10113 of the rotating shaft mechanism provided in the embodiment of the present application when the first shell and the second shell are in a closed state can be referred to together with Fig.11 and Fig.15In the process of the first shell and the second shell changing from a flattened state to a closed state, the first connecting member 10113 can move toward the first swing arm 10111 in the first trajectory groove 1023, and in the process of changing from a closed state to a flattened state, the first connecting member 10113 can move toward the first support arm 10112 in the first trajectory groove 1023, so that the first connecting member 10113 can move relative to the main shaft 102 according to the set trajectory.

[0206] Refer to Fig.11 and Fig.15 It can be seen that when the first housing and the second housing are in the process of changing from the flattened state to the closed state or from the closed state to the flattened state, the first swing arm 10111 and the first support arm 10112 can rotate around the main shaft 102. Because the first swing arm 10111 and the first support arm 10112 are mutually pulled by the first connecting member 10113, the first connecting member 10113 can also rotate relative to the surface 102211 of the first protrusion and the groove surface 102111 of the first arc groove during the movement in the first track groove 1023, so as to improve the smoothness of the movement of the first rotating component 1011.

[0207] Reference Fig.16 , Fig.16 A schematic diagram of the structure of the first connecting member 10113 provided in an embodiment of the present application. In the present application, the first connecting member 10113 may include a first arcuate surface 101133 and a second arcuate surface 101134. In order to realize the rotation of the first connecting member 10113 relative to the surface 102211 of the first protrusion and the groove surface 102111 of the first arcuate groove, the first arcuate surface 101133 and the second arcuate surface 101134 may be arcuate surfaces, and the center of the first arcuate surface 101133 coincides with the center of the second arcuate surface 101134. The radii of the first arcuate surface 101133 and the second arcuate surface 101134 may be equal or unequal, which is not limited in the present application. In addition, considering the design tolerance, the first arc surface 101133 and the second arc surface 101134 can also be arc surfaces of other possible shapes such as elliptical arc surfaces, as long as the first connecting member 10113 can be rotated relative to the surface 102211 of the first protrusion and the groove surface 102111 of the first arc groove.

[0208] You can continue to refer to Fig.11 and Fig.15 , the first shell and the second shell are in a Fig.11 The flattened state shown and Fig.15In the closed state shown, the first curved surface 101133 of the first connecting member 10113 can abut against the surface 102211 of the first protrusion, and the second curved surface 101134 can abut against the groove surface 102111 of the first curved groove, so that the surface 102211 of the first protrusion and the groove surface 102111 of the first curved groove limit the first connecting member 10113 to the first track groove 1023, so that when the rotating shaft mechanism 1 is in the flattened state and the closed state, the position of the first connecting member 10113 is relatively stable and no virtual shaking occurs, so as to improve the reliability of the rotating shaft mechanism 1 in the above two states.

[0209] In this application, the electronic device may be placed in a Fig.11 In the flattened state shown in FIG. 1 , the distance between the point where the surface 102211 of the first protrusion abuts against the first arc surface 101133 and the point where the groove surface 102111 of the first arc groove abuts against the second arc surface 101134 is recorded as d1. Fig.15 In the closed state shown, the distance between the point where the surface 102211 of the first protrusion abuts against the first arc surface 101133 and the point where the groove surface 102111 of the first arc groove abuts against the second arc surface 101134 is recorded as d2. Since the first arc surface 101133 of the first connector 10113 can abut against the surface 102211 of the first protrusion, and the second arc surface 101134 can abut against the groove surface 102111 of the first arc groove when the electronic device is in the flattened state and the closed state, when the first arc surface 101133 and the second arc surface 101134 are both arc surfaces, it can be concluded that d1=d2.

[0210] In the present application, the specific configuration of the surface 102211 of the first protrusion and the groove surface 102111 of the first arc-shaped groove is not limited. For example, the surface 102211 of the first protrusion can be an arc surface, and the groove surface 102111 of the first arc-shaped groove can be an arc surface. In addition, the center of the first protrusion surface 102211 coincides with the center of the groove surface 102111 of the first arc-shaped groove. In some other possible embodiments of the present application, the surface 102211 of the first protrusion and the groove surface 102111 of the first arc-shaped groove can also be set as planes, so that the first track groove 1023 is a straight groove; or the surface 102211 of the first protrusion and the groove surface 102111 of the first arc-shaped groove can also be other curved surfaces, so that the first track groove 1023 is a curved groove of any shape, which should be understood to fall within the protection scope of the present application.

[0211] You can continue to refer to Fig.11In the present application, the spacing between the surface 102211 of the first protrusion and the groove surface 102111 of the first arc groove can be equal, so that the first track groove 1023 is a groove of equal width. At this time, in the process of the first shell and the second shell from the flattened state to the closed state, and from the closed state to the flattened state, the surface 102211 of the first protrusion and the first arc surface 101133, and the groove surface 102111 of the first arc groove and the second arc surface 101134 are always in abutment. Therefore, in the process of the first shell and the second shell from the flattened state to the closed state, and from the closed state to the flattened state, the movement trajectory of the first connecting member 10113 can be the same, which can help improve the stability of the movement of the first connecting member 10113, thereby improving the movement stability of the first rotating component 1011.

[0212] Reference Fig.17 , Fig.17 Schematic diagram of the assembly structure of the first connecting member 10113 and the main shaft 102 provided in the embodiment of the present application. In the present application, when the first track groove 1023 is a groove of equal width, and the first arc surface 101133 and the second arc surface 101134 are arc surfaces, the sum of the radius R1 of the first arc surface 101133 and the radius R1 of the second arc surface 101134 is equal to the distance D between the surface 102211 of the first protrusion and the groove surface 102111 of the first arc groove. In addition, considering the smoothness of the movement of the first connecting member 10113 in the first track groove 1023, a certain design gap can be reserved between the first arc surface 101133 and the surface 102211 of the first protrusion, and / or the second arc surface 101134 and the groove surface 102111 of the first arc groove.

[0213] In some other possible embodiments of the present application, the movement trajectory of the first connecting member 10113 during the process of the first shell and the second shell changing from the flattened state to the closed state may be different from the movement trajectory of the first connecting member 10113 during the process of the first shell and the second shell changing from the closed state to the flattened state. In specific implementation, during the process of the first shell and the second shell changing from the flattened state to the closed state, the first arc surface 101133 abuts against the surface 102211 of the first protrusion, and there is a gap between the second arc surface 101134 and the groove surface 102111 of the first arc groove. And during the process of the first shell and the second shell changing from the flattened state to the closed state, the second arc surface 101134 abuts against the groove surface 102111 of the first arc groove, and there is a gap between the first arc surface 101133 and the surface 102211 of the first protrusion. In this embodiment, the gaps between the surface 102211 of the first protrusion and the groove surface 102111 of the first arc-shaped groove may be different at different locations, so the first track groove 1023 may be a groove of non-uniform width.

[0214] As can be known from the above introduction, in the present application, the first swing arm 10111 can be rotatably connected with the main shaft 102, wherein the first swing arm 10111 and the main shaft 102 can be rotatably connected by means of a virtual axis, which can help reduce the space occupied by the first swing arm 10111 on the main shaft 102, thereby helping to reduce the volume of the first rotating module 101, so as to facilitate the miniaturization design of the rotating shaft mechanism 1. In addition, it can be understood that in the embodiment of the present application, when the first swing arm 10111 is rotatably connected with the main shaft 102 by means of a virtual axis, the axis of rotation of the first swing arm 10111 around the main shaft 102 is located on the side of the main shaft 102 away from the flexible display screen.

[0215] It is worth mentioning that in the present application, the virtual axis refers to the axis of an arc-shaped structure, and the two rotatably connected parts can rotate relative to the virtual axis, and the position of the virtual axis is fixed as the two rotatably connected parts rotate relative to each other. Fig.18 As shown, Fig.18 for Fig. 9 The BB cross-sectional view of the structure shown in FIG. The end of the first swing arm facing the first base 1021 may be provided with a first arc-shaped rotating block 101111. In addition, referring to Fig.13 , the first base 1021 may be provided with a second arc groove 10212. Then the first arc rotating block 101111 may be accommodated in the second arc groove 10212, and the first arc rotating block 101111 may slide along the groove surface of the second arc groove 10212, so that the first swing arm 10111 is rotated around the main shaft 102 by sliding the first arc rotating block 101111 along the arc surface of the second arc groove 10212. In addition, in the present application, the first arc rotating block 101111 may be, but not limited to, a circular arc rotating block, and the second arc groove 10212 may be, but not limited to, a circular arc groove. It can be understood that when the first arc-shaped rotating block 101111 is a circular arc-shaped rotating block, its surface for contacting the groove surface of the second arc-shaped groove 10212 can be a circular arc surface, and the groove surface of the second arc-shaped groove 10212 is also a circular arc surface, and the centers of the two circular arc surfaces coincide.

[0216] Can be referred to together Fig.14 and Fig.18 The first cover plate 1022 may include a second protrusion 10222 arranged toward the second arc groove 10212, at least a portion of the first arc-shaped rotating block 101111 is located between the second protrusion 10222 and the second arc groove 10212, and the first arc-shaped rotating block 101111 may contact the surface 102221 of the second protrusion, thereby limiting the first arc-shaped rotating block 101111 between the first cover plate 1022 and the first base 1021, which can effectively improve the stability of the first arc-shaped rotating block 101111 relative to the first base 1021.

[0217] It is worth mentioning that when the groove surface of the second arc groove 10212 is an arc surface, the portion of the surface 102221 of the second protrusion that is used to contact the first arc rotating block 101111 can also be an arc surface, and the centers of the two arc surfaces coincide. In addition, the surface of the first arc rotating block 101111 facing the second protrusion 10222 can be a plane or an arc surface, as long as the first arc rotating block 101111 can rotate relative to the second protrusion 10222.

[0218] Please refer to Fig.19 , Fig.19 The first rotating shaft mechanism 1 provided in the embodiment of the present application is a cross-sectional view of the first swing arm 10111 when the first housing and the second housing are in a closed state. In the present application, the first arc-shaped rotating block 101111 may also be provided with a first recessed portion 1011111, and the opening of the first recessed portion 1011111 is arranged toward the first cover plate 1022. In addition, the end of the first cover plate 1022 facing the first swing arm 10111 may be provided with a first plug-in portion 10223. In the closed state, the first plug-in portion 10223 may be inserted into the first recessed portion 1011111, and the surface of the first plug-in portion 10223 facing the second arc-shaped groove 10212 abuts against at least part of the surface of the first recessed portion 1011111. In this way, the rotation position of the first arc-shaped rotating block 101111 can be limited, and the first arc-shaped rotating block 101111 can be prevented from escaping from the second arc-shaped groove 10212, thereby improving the reliability of the connection between the first swing arm 10111 and the first base 1021, and improving the structural reliability of the entire rotating shaft mechanism 1.

[0219] It is worth mentioning that in the present application, in addition to being rotatably connected to the main shaft 102 by means of a virtual shaft, the first swing arm 10111 can also be rotatably connected by means of a solid shaft, which can make the connection between the first swing arm 10111 and the main shaft 102 more reliable. It can be understood that when the first swing arm 10111 is rotatably connected to the main shaft 102 by means of a solid shaft, the axis of rotation of the first swing arm 10111 around the main shaft 102 is also located on the side of the main shaft 102 away from the flexible display screen.

[0220] In the present application, when the first swing arm 10111 is rotatably connected to the first connecting member 10113, reference can be made to Fig.16 The first connecting member 10113 may include a first rotating shaft 101131 and a second rotating shaft 101132, and the axis of the first rotating shaft 101131 is parallel to the axis of the second rotating shaft 101132 but does not overlap.

[0221] In addition, refer to Fig. 20 , Fig. 20A schematic diagram of the structure of the first rotating assembly 1011 provided in an embodiment of the present application. The first connecting member 10113 is rotatably connected to the first swing arm 10111 via a first rotating shaft 101131, and the first connecting member 10113 is rotatably connected to the first support arm 10112 via a second rotating shaft 101132. Thus, the first swing arm 10111 and the first support arm 10112 can be pulled against each other via the first connecting member 10113.

[0222] Reference Fig.21 , Fig.21 1 is a schematic diagram of a structure of the first swing arm 10111 provided in an embodiment of the present application. The first arc-shaped rotating block 101111 of the first swing arm 10111 is provided with a first mounting groove 1011112. Fig.18 and Fig.21 , the slot opening of the first mounting groove 1011112 is set toward the second arc-shaped groove 10212, then the first rotating shaft 101131 can be installed in the first mounting groove 1011112, and a portion of the surface of the first rotating shaft 101131 can contact the slot surface of the first mounting groove 1011112, and a portion of the surface of the first rotating shaft 101131 contacts the slot surface of the second arc-shaped groove 10212 to limit the first rotating shaft 101131 to the first mounting groove 1011112.

[0223] You can continue to refer to Fig.18 and Fig.21 , the groove surface of the first installation groove 1011112 may include a first arc surface 10111121, and the surface of the first rotating shaft 101131 for contacting the groove surface of the first installation groove 1011112 is a second arc surface 1011311, and the center of the first arc surface 10111121 coincides with the center of the second arc surface 1011311. In addition, referring to Fig.13 , the groove surface of the second arc groove 10212 can be the third arc surface 102121. Fig.18 As shown, the surface of the first rotating shaft 101131 for contacting the groove surface of the second arc groove 10212 may be the fourth arc surface 1011312, and the center of the third arc surface 102121 coincides with the center of the fourth arc surface 1011312. Fig.18 and Fig.19 While the first rotating shaft 101131 slides along the groove surface of the second arc groove 10212 with the first arc-shaped rotating block 101111, the first rotating shaft 101131 can also be rotated relative to the first arc-shaped rotating block 101111, thereby facilitating the movement of the first connecting member 10113 relative to the main shaft 102.

[0224] In the present application, when the first connecting member is rotatably connected to the first supporting arm, Fig. 20As shown, the second rotating shaft 101132 can be simultaneously provided through the first connecting member 10113 and the first supporting arm 10112, so the connection method between the first connecting member 10113 and the first supporting arm 10112 is relatively simple, which is conducive to simplifying the structure of the first rotating assembly 1011, thereby simplifying the structure of the rotating shaft mechanism 1. It is worth mentioning that when the first arc surface 101133 and the second arc surface 101134 of the first connecting member 10113 are both arc surfaces, the center of the first arc surface 101133, the center of the second arc surface 101134 and the axis of the second rotating shaft 101132 coincide.

[0225] It can be understood that in the first rotating shaft mechanism 1 provided in the embodiment of the present application, the first connecting member 10113 may include a plurality of first sub-connecting members that are rotatably connected in sequence. In addition, the plurality of first sub-connecting members may be located between the first swing arm 10111 and the first support arm 10112, and the first swing arm 10111 may be rotatably connected to the adjacent first sub-connecting member, and the first support arm 10112 may be rotatably connected to the adjacent first sub-connecting member. Among them, the manner of rotatably connecting the first swing arm 10111 to the adjacent first sub-connecting member, and the manner of rotatably connecting the first support arm 10112 to the adjacent first sub-connecting member may be specifically set with reference to the above description of the rotatably connecting the first swing arm 10111 and the first support arm 10112 to the first connecting member 10113, and will not be described in detail here. In the present application, by setting the first connecting member 10113 as a plurality of first sub-connecting members that are rotatably connected in sequence, so that the first swing arm 10111 and the first support arm 10112 are connected through a plurality of first sub-connecting members, the speed uniformity of the first swing arm 10111 and the first support arm 10112 during the rotation process around the main axis 102 can be effectively improved, so as to enhance the smoothness of the mutual pulling movement of the first swing arm 10111 and the first support arm 10112.

[0226] You can continue to refer to Fig.10In the present application, the first swing arm 10111 is slidably connected to the first housing fixing frame 1013. In a specific implementation, the first housing fixing frame 1013 is provided with a first slide groove 10131. The first slide groove 10131 extends along a first direction, and the first swing arm 10111 can be installed in the first slide groove 10131, and can slide in the first slide groove 10131 along the first direction. The first direction can be the direction in which the first housing fixing frame 1013 moves toward or away from the first base 1021. In addition, in order to prevent the first swing arm 10111 from falling off from the first slide groove 10131, a first slideway can be provided on the groove wall of the first slide groove 10131, and a first slider can be provided on the first swing arm 10111. In this way, the first slider can be clamped in the first slideway, and the first slider can slide along the first slideway to achieve the limitation of the first swing arm 10111 in the first slide groove 10131. In addition, by arranging a first slideway on the groove wall of the first slide groove 10131, it can provide guidance for the first swing arm 10111 to slide along the first slide groove 10131, thereby improving the stability of the movement of the first swing arm 10111.

[0227] In the present application, the first support arm 10112 can be rotatably connected to the second housing fixing frame 1014. Fig.10 The second housing fixing frame 1014 has a second mounting portion 10142. The end of the first support arm 10112 facing the second housing fixing frame 1014 is mounted on the second mounting portion 10142, and the end of the first support arm 10112 facing the second housing fixing frame 1014 is rotatably connected to the second mounting portion 10142.

[0228] In the embodiment of the present application, the specific manner in which the end of the first support arm 10112 facing the second housing fixing frame 1014 is rotatably connected to the second mounting portion 10142 is not limited. Fig.10 The second mounting portion 10142 may be provided with a first mounting hole, and the end of the first support arm 10112 facing the second shell fixing frame 1014 may be provided with a second mounting hole, then the end of the first support arm 10112 facing the first shell fixing frame 1013 may be rotatably connected to the second mounting portion 10142 via a rotating shaft that passes through both the first mounting hole and the second mounting hole.

[0229] Reference Fig. 22 , Fig. 22The schematic diagram of the motion mechanism of the first rotating shaft mechanism provided in the embodiment of the present application. Based on the first rotating shaft mechanism 1 provided in the above embodiment of the present application, in the process of the first shell and the second shell changing from the flattened state to the closed state, the first shell fixing frame 1013 and the second shell fixing frame 1014 move toward each other, and when the first shell fixing frame 1013 drives the first swing arm 10111 to rotate clockwise around the main shaft 102, the first swing arm 10111 can slide along the groove surface of the second arc groove 10212, thereby driving the first connecting member 10113 to move toward the first swing arm 10111 in the first track groove 1023 of the main shaft 102. Because the first connecting member 10113 is rotatably connected to the first support arm 10112, the first connecting member 10113 can drive the first support arm 10112 to rotate counterclockwise around the main shaft 102 during the process of moving toward the first swing arm 10111 in the first track groove 1023 of the main shaft 102, thereby driving the second shell fixing frame 1014 to rotate counterclockwise around the main shaft 102 through the first support arm 10112. In the process of the electronic device moving from the closed state to the flattened state, the first housing fixing frame 1013 and the second housing fixing frame 1014 move in opposite directions. When the first housing fixing frame 1013 drives the first swing arm 10111 to rotate counterclockwise around the main axis 102, the first swing arm 10111 can drive the first connecting member 10113 to move toward the first support arm 10112 in the first track groove 1023 of the main axis 102, thereby driving the first support arm 10112 to rotate clockwise around the main axis 102, and driving the second housing fixing frame 1014 to rotate clockwise around the main axis 102 through the first support arm 10112. Thus, the folding and unfolding functions of the hinge mechanism 1 are realized.

[0230] In order to ensure the stability of some existing rotating shaft mechanisms, it is necessary to strengthen the thickness of the rotating assembly connected to the main shaft, which will make the main shaft and the rotating shaft mechanism very thick. If the thickness is forcibly reduced, the strength of the rotating assembly will be easily weakened, which will greatly affect the reliability of the rotating shaft mechanism and reduce the life of the electronic device. The above-mentioned first rotating shaft mechanism 1 of the present application has a streamlined structure. Through the above-mentioned structural relationship, the cross-section of the first connecting member 10113 can be made smaller to shuttle in the first track groove 1023 of the main shaft 102. At the same time, since the first connecting member 10113 has a sufficient length to extend in the direction perpendicular to the axis, and is connected to the first swing arm 10111 and the first support arm 10112 respectively, the reliability of the rotating shaft mechanism 1 can be guaranteed. In this way, the effect of reducing the thickness of the main shaft 102 and the thickness of the whole machine can be achieved, and the reliability of the first rotating shaft mechanism 1 can be maintained, so that the entire first rotating shaft mechanism 1 is thin and reliable.

[0231] In addition, since the first connecting member 10113 can move along a set track in the first track groove 1023, it can avoid the uncontrolled movement of the first connecting member 10113 during the entire folding and unfolding process, thereby avoiding the random movement of the first shell fixing frame 1013 and the second shell fixing frame 1014, thereby ensuring the structural and movement stability of the entire first rotating shaft mechanism 1. In some cases, by reasonably designing the first track groove 1023, the outer tangent of the first rotating shaft mechanism 1 can also maintain a constant length during the entire folding and unfolding process, thereby allowing the portion of the flexible display screen covering the surface of the first rotating shaft mechanism 1 to basically maintain a constant length, thus effectively avoiding squeezing or pulling the flexible display screen, thereby improving the structural reliability of the flexible display screen, and thereby improving the structural reliability of the electronic device.

[0232] You can continue to refer to Fig.10 , similar to the structure of the first rotating component 1011, when the second rotating component 1012 is specifically set, the second rotating component 1012 is located between the first shell fixing frame 1013 and the second shell fixing frame 1014. In addition, the second rotating component 1012 may include a second swing arm 10121, a second support arm 10122 and a second connecting member 10123. Among them, the second connecting member 10123 is located between the second swing arm 10121 and the second support arm 10122, the second connecting member 10123 is rotationally connected to the second swing arm 10121, and the second connecting member 10123 is rotationally connected to the second support arm 10122. In the present application, when the second connecting member 10123 is rotationally connected to the second swing arm 10121 and the first support arm 10112, it can be set with reference to the above-mentioned way of rotationally connecting the first connecting member 10113 with the second swing arm 10121 and the second support arm 10122. Exemplarily, reference can be made to Fig.16 , Fig.16 It can also be used to represent the structure of the second connecting member 10123 provided in the embodiment of the present application. The second connecting member 10123 may include a third rotating shaft 101231 and a fourth rotating shaft 101232, and the axis of the third rotating shaft 101231 is parallel to and does not overlap with the axis of the fourth rotating shaft 101232. Among them, the second connecting member 10123 and the second swing arm 10121 can be rotatably connected through the third rotating shaft 101231, and the second connecting member 10123 and the second support arm 10122 can be rotatably connected through the fourth rotating shaft 101232, so that the second swing arm 10121 and the second support arm 10122 can perform mutual pulling motion through the second connecting member 10123.

[0233] In addition, refer to Fig.12, the spindle 102 may be provided with a second track groove 1024, and the second connecting member 10123 may move along the second track groove, thereby limiting the movement track of the second connecting member 10123. Fig.13 The first base 1021 may be provided with a third arc groove 10213, the second connecting member 10123 is accommodated in the third arc groove 10213, and the second connecting member 10123 can slide along the groove surface of the third arc groove 10213. Fig.14 The first cover plate 1022 includes a third protrusion 10224, which can be directed toward Fig.13 The third arc groove 10213 of the first base 1021 is set, and there is a gap between the surface 102241 of the third protrusion and the groove surface 102131 of the third arc groove, and the gap serves as the second track groove 1024.

[0234] In this application, if Fig.16 As shown, the second connecting member 10123 may include a third arcuate surface 101233 and a fourth arcuate surface 101234. When the first shell and the second shell are in the flattened state and the closed state, the third arcuate surface 101233 of the second connecting member 10123 may abut against the surface 102241 of the third protrusion, and the fourth arcuate surface 101234 abuts against the groove surface 102131 of the third arcuate groove, so that the surface 102241 of the third protrusion and the groove surface 102131 of the third arcuate groove limit the second connecting member 10123 to the second track groove 1024, so that when the rotating shaft mechanism 1 is in the flattened state and the closed state, the position of the second connecting member 10123 is relatively stable, and no virtual position shaking occurs, so as to improve the structural reliability of the first rotating shaft mechanism 1 in the above two states.

[0235] In the embodiment of the present application, the third arc surface 101233 of the second connecting member 10123 can be set with reference to the first arc surface 101133 of the first connecting member 10113, and the fourth arc surface 101234 can be set with reference to the second arc surface 101134 of the first connecting member 10113, which will not be described in detail here. In addition, the second track groove 1024 can be specifically set with reference to the first track groove 1023. In short, the spacing between the surface 102241 of the third protrusion and the groove surface 102131 of the third arc groove is equal at all places, so that the second track groove 1024 is a groove of equal width. At this time, in the process of the electronic device from the flat state to the closed state, and from the closed state to the flat state, the surface 102241 of the third protrusion and the third arc surface 101233, and the groove surface 102131 of the third arc groove and the fourth arc surface 101234 are always in abutment. Thus, in the process of the first shell and the second shell changing from the flattened state to the closed state, and from the closed state to the flattened state, the movement track of the second connecting member 10123 in the second track groove 1024 is the same. Alternatively, in the process of the first shell and the second shell electronic device changing from the flattened state to the closed state, the third arc surface 101233 abuts against the surface 102241 of the third protrusion, and there is a gap between the fourth arc surface 101234 and the groove surface 102131 of the third arc groove, and in the process of the first shell and the second shell electronic device changing from the closed state to the flattened state, the fourth arc surface 101234 abuts against the groove surface 102131 of the third arc groove, and there is a gap between the third arc surface 101233 and the surface 102241 of the third protrusion, so that the movement track of the second connecting member 10123 in the process of the electronic device changing from the flattened state to the closed state is different from the movement track of the second connecting member 10123 in the process of the electronic device changing from the closed state to the flattened state.

[0236] In the present application, the second swing arm 10121 is rotatably connected to the main shaft 102. The second swing arm 10121 and the main shaft 102 can be rotatably connected by a virtual axis. Fig.13 As shown, the first base 1021 may be provided with a fourth arc groove 10214. Fig.10 and Fig.21 , Fig.21It can also be used to demonstrate the structure of the second swing arm 10121. The second swing arm 10121 is provided with a second arc-shaped rotating block 101211 at one end facing the first base 1021, wherein the second arc-shaped rotating block 101211 may be, but not limited to, a circular arc-shaped rotating block, and the fourth arc-shaped groove 10214 may be, but not limited to, a circular arc-shaped groove. The second arc-shaped rotating block 101211 can be accommodated in the fourth arc-shaped groove 10214 and can slide along the groove surface of the fourth arc-shaped groove 10214, so that the second swing arm 10121 can be rotated around the first base 1021 by sliding the second arc-shaped rotating block 101211 along the groove surface of the fourth arc-shaped groove 10214. This can help reduce the space occupied by the second swing arm 10121 on the main shaft 102, thereby helping to reduce the volume of the first rotating module 101, so as to facilitate the miniaturization design of the rotating shaft mechanism 1. It can be understood that in the embodiment of the present application, when the second swing arm 10121 is rotationally connected to the main shaft 102 via a virtual axis, the axis of rotation of the second swing arm 10121 around the main shaft 102 is located on the side of the first rotating shaft mechanism 1 away from the flexible display screen.

[0237] In addition, in the present application, the second arc-shaped rotating block 101211 may be, but not limited to, a circular arc-shaped rotating block, and the fourth arc-shaped groove 10214 may be, but not limited to, a circular arc-shaped groove. It is understandable that when the second arc-shaped rotating block 101211 is a circular arc-shaped rotating block, its surface for contacting the groove surface of the fourth arc-shaped groove 10214 may be a circular arc surface, and the groove surface of the fourth arc-shaped groove 10214 is also a circular arc surface, and the centers of the two circular arc surfaces coincide.

[0238] In the present application, in order to improve the stability of the second swing arm 10121 rotating around the main axis 102. Fig.14As shown, the first cover plate 1022 further includes a fourth protrusion 10225 disposed toward the fourth arc groove 10214, at least a portion of the second arc-shaped rotating block 101211 is located between the fourth protrusion 10225 and the fourth arc groove 10214, and the surface of the second arc-shaped rotating block 101211 facing the fourth protrusion 10225 can contact the surface 102251 of the fourth protrusion, so that the second arc-shaped rotating block 101211 can be limited between the first cover plate 1022 and the first base 1021, which can effectively improve the stability of the second arc-shaped rotating block 101211 relative to the first base 1021. In addition, when the groove surface of the fourth arc groove 10214 is an arc surface, the portion of the surface 102251 of the fourth protrusion that is used to contact the second arc-shaped rotating block 101211 can also be an arc surface, and the centers of the two arc surfaces coincide. In the present application, the surface of the second arc-shaped rotating block 101211 facing the fourth protrusion 10225 can be a plane or an arc surface, as long as the second arc-shaped rotating block 101211 can rotate relative to the fourth protrusion 10225 while sliding along the groove surface of the fourth arc-shaped groove 10214.

[0239] In order to improve the reliability of the connection between the second swing arm 10121 and the first base 1021, the second arc-shaped rotating block 101211 can also be provided with a second recessed portion 1012111, and the opening of the second recessed portion 1012111 is arranged toward the first cover plate 1022. In addition, the end of the first cover plate 1022 facing the second housing fixing frame 1014 can be provided with a second plug-in portion. In this closed state, the second plug-in portion can be inserted into the second recessed portion 1012111, and the surface of the second plug-in portion facing the fourth arc-shaped groove 10214 abuts against at least part of the surface of the second recessed portion 1012111. In this way, the rotation position of the second arc-shaped rotating block 101211 can be limited, thereby preventing the second arc-shaped rotating block 101211 from coming out of the fourth arc-shaped groove 10214.

[0240] It is worth mentioning that in the present application, in addition to being rotatably connected to the main shaft 102 by means of a virtual shaft, the second swing arm 10121 can also be rotatably connected by means of a solid shaft, which can make the connection between the first swing arm 10111 and the main shaft 102 more reliable. In the embodiment of the present application, when the second swing arm 10121 is rotatably connected to the main shaft 102 by means of a solid shaft, the axis of rotation of the second swing arm 10121 around the main shaft 102 is also located on the side of the first rotating shaft mechanism 1 that is away from the flexible display screen.

[0241] When the second connecting member 10123 is rotatably connected to the second swing arm 10121 through the third rotating shaft 101231, the following can be referred to: Fig.15The second arc-shaped rotating block 101211 is provided with a second mounting groove 1012112, and the groove opening of the second mounting groove 1012112 is arranged toward the fourth arc-shaped groove 10214. Then, the third rotating shaft 101231 can be installed in the second mounting groove 1012112, and a part of the surface of the third rotating shaft 101231 can contact the groove surface of the second mounting groove 1012112, and a part of the surface of the third rotating shaft 101231 contacts the groove surface of the fourth arc-shaped groove 10214, so as to limit the third rotating shaft 101231 to the second mounting groove 1012112.

[0242] like Fig.21 As shown, in the present application, the groove surface of the second installation groove 1012112 may include a fifth arc surface 10121121, and as shown in Fig.16 The surface of the third rotating shaft 101231 used for contacting the groove surface of the second installation groove 1012112 is the sixth arc surface 1012311, and the center of the fifth arc surface 10121121 coincides with the center of the sixth arc surface 1012311. In addition, the groove surface of the fourth arc groove 10214 is the seventh arc surface 102141, and the surface of the third rotating shaft 101231 used for contacting the groove surface of the fourth arc groove 10214 may be the eighth arc surface 1012312, then the center of the seventh arc surface 102141 coincides with the center of the eighth arc surface 1012312. In this way, while the third rotating shaft 101231 slides along the groove surface of the fourth arc-shaped groove 10214 with the second arc-shaped rotating block 101211, the third rotating shaft 101231 can also rotate relative to the second arc-shaped rotating block 101211, thereby facilitating the movement of the second connecting member 10123 relative to the main shaft 102.

[0243] In the embodiment of the present application, when the second connecting member 10123 and the second support arm 10122 are rotatably connected via the fourth rotating shaft 101232, the fourth rotating shaft 101232 can be simultaneously passed through the second connecting member 10123 and the second support arm 10122. The connection method between the second connecting member 10123 and the second support arm 10122 is relatively simple, which is conducive to simplifying the structure of the second rotating component 1012, thereby simplifying the structure of the rotating shaft mechanism.

[0244] It can be understood that in the first rotating shaft mechanism 1 provided in the embodiment of the present application, the second connecting member 10123 may include a plurality of second sub-connecting members that are rotatably connected in sequence. In addition, the plurality of second sub-connecting members may be located between the second swing arm 10121 and the second support arm 10122, and the second swing arm 10121 may be rotatably connected to the adjacent second sub-connecting member, and the second support arm 10122 may be rotatably connected to the adjacent second sub-connecting member. Among them, the manner of rotatably connecting the second swing arm 10121 to the adjacent second sub-connecting member, and the manner of rotatably connecting the second support arm 10122 to the adjacent second sub-connecting member may be specifically set with reference to the above description of the rotatably connecting the second swing arm 10121 and the second support arm 10122 to the second connecting member 10123, and will not be described in detail here. In the present application, by setting the second connecting member 10123 as a plurality of second sub-connecting members that are rotatably connected in sequence, so that the second swing arm 10121 and the second support arm 10122 are rotatably connected through a plurality of second sub-connecting members, the speed uniformity of the second swing arm 10121 and the second support arm 10122 during the rotation around the main axis 102 can be effectively improved, so as to enhance the smoothness of the mutual pulling movement of the second swing arm 10121 and the second support arm 10122.

[0245] In the present application, the second swing arm 10121 can be slidably connected with the second housing fixing frame 1014. In specific implementation, the second housing fixing frame 1014 is provided with a second slide groove 10141. Along the length direction of the first rotating shaft mechanism 1, the second slide groove 10141 is spaced apart from the second mounting portion 10142. The second slide groove 10141 extends along the second direction. The second swing arm 10121 can be installed in the second slide groove 10141 and can slide in the second slide groove 10141 along the second direction. The second direction can be the direction in which the second housing fixing frame 1014 moves toward or away from the first base 1021. In addition, in order to prevent the second swing arm 10121 from falling off from the second slide groove 10141, a second slideway can be provided on the groove wall of the second slide groove 10141, and a second slider can be provided on the second swing arm 10121. In this way, the second slider can be clamped in the second slideway and can slide along the second slideway to limit the second swing arm 10121 in the second slide groove 10141. In addition, by arranging the second slideway on the groove wall of the second slide groove 10141, it can provide a guide for the second swing arm 10121 to slide along the second slide groove 10141, thereby improving the stability of the movement of the second swing arm 10121.

[0246] In addition, the second support arm 10122 can be rotatably connected to the first housing fixing frame 1013. In a specific implementation, the first housing fixing frame 1013 has a first mounting portion 10132, and along the length direction of the first rotating shaft mechanism 1, the first mounting portion 10132 is spaced apart from the first sliding groove 10131. The end of the second support arm 10122 facing the first housing fixing frame 1013 is mounted on the first mounting portion 10132, and the end of the second support arm 10122 facing the first housing fixing frame 1013 is rotatably connected to the first mounting portion 10132.

[0247] In the embodiment of the present application, the specific manner in which the end of the second support arm 10122 facing the first housing fixing frame 1013 is rotatably connected to the first mounting portion 10132 is not limited. Fig.10 The first mounting portion 10132 may be provided with a third mounting hole, and the end of the second support arm 10122 facing the first shell fixing frame 1013 may be provided with a fourth mounting hole, then the end of the second support arm 10122 facing the first shell fixing frame 1013 may be rotatably connected to the first mounting portion 10132 via a rotating shaft that is simultaneously provided through the third mounting hole and the fourth mounting hole.

[0248] Based on the first rotating shaft mechanism 1 provided by the above embodiment of the present application, in the process of the first housing and the second housing changing from the flattened state to the closed state, the first housing fixing frame 1013 and the second housing fixing frame 1014 move toward each other, and when the second housing fixing frame 1014 drives the second swing arm 10121 to rotate counterclockwise around the main shaft 102, the second swing arm 10121 can drive the second connecting member 10123 to move toward the second swing arm 10121 in the second track groove 1024 of the main shaft 102. Because the second connecting member 10123 is rotatably connected with the second support arm 10122, when the second connecting member 10123 moves toward the second swing arm 10121 in the second track groove 1024 of the main shaft 102, the second support arm 10122 can be driven to rotate clockwise around the main shaft 102, thereby driving the first housing fixing frame 1013 to rotate clockwise around the main shaft 102 through the second support arm 10122. In the process of the first shell and the second shell from the closed state to the flattened state, the first shell fixing frame 1013 and the second shell fixing frame 1014 move in opposite directions, and when the second shell fixing frame 1014 drives the second swing arm 10121 to rotate clockwise around the main shaft 102, the second swing arm 10121 can drive the second connecting member 10123 to move toward the second support arm 10122 in the second track groove 1024 of the main shaft 102, and can drive the second support arm 10122 to rotate counterclockwise around the main shaft 102, and drive the first shell fixing frame 1013 to rotate counterclockwise around the main shaft 102 through the second support arm 10122. Thus, the folding and unfolding functions of the first rotating shaft mechanism 1 are realized.

[0249] In order to ensure the stability of some existing rotating shaft mechanisms, it is necessary to strengthen the thickness of the rotating assembly connected to the main shaft, which will make the main shaft and the rotating shaft mechanism very thick. If the thickness is forcibly reduced, the strength of the rotating assembly will be easily weakened, which will greatly affect the reliability of the rotating shaft mechanism and reduce the life of the electronic device. The above-mentioned first rotating shaft mechanism 1 of the present application has a streamlined structure. Through the above-mentioned structural relationship, the cross-section of the second connecting member 10123 can be made smaller to shuttle in the second track groove 1024 of the main shaft 102. At the same time, since the second connecting member 10123 has a sufficient length to extend in the direction perpendicular to the axis, and is connected to the second swing arm 10121 and the second support arm 10122 respectively, the reliability of the first rotating shaft mechanism 1 can be guaranteed. In this way, the effect of reducing the thickness of the main shaft 102 and the thickness of the whole machine can be achieved, and the reliability of the rotating first shaft mechanism 1 can be maintained, so that the entire first rotating shaft mechanism 1 is thin and reliable.

[0250] Since the second connecting member 10123 can move according to the set track, it can avoid the uncontrolled movement of the second connecting member 10123 during the entire folding and unfolding process, thereby avoiding the random movement of the first shell fixing frame 1013 and the second shell fixing frame 1014, thereby ensuring the structural and movement stability of the entire first rotating shaft mechanism 1. In some cases, by reasonably designing the second track groove 1024, the outer tangent of the first rotating shaft mechanism 1 can also maintain a constant length during the entire folding and unfolding process, thereby allowing the flexible display screen covering the surface of the first rotating shaft mechanism 1 to basically maintain a constant length. In this way, it can effectively avoid squeezing or pulling the flexible display screen, thereby improving the structural reliability of the flexible display screen, and thereby improving the structural reliability of the electronic device.

[0251] Reference Fig.23 , Fig.23 It is a partial structural diagram of the first rotating shaft mechanism 1 provided in the embodiment of the present application, and Fig.13The main shaft 102 is omitted in order to facilitate the description of the mutual pulling movement relationship between the first rotating component 1011 and the second rotating component 1012. In the present application, the first swing arm 10111 is slidably connected to the first shell fixing frame 1013, the first support arm 10112 is rotatably connected to the second shell fixing frame 1014, and the first swing arm 10111 can pull the first support arm 10112 to move along a set trajectory through the first connecting member 10113; the second swing arm 10121 is slidably connected to the second shell fixing frame 1014, the second support arm 10122 is rotatably connected to the first shell fixing frame 1013, and the second swing arm 10121 can pull the second support arm 10122 to move along a set trajectory through the second connecting member 10123. In this way, the movement distance of the first shell fixing frame 1013 and the second shell fixing frame 1014 toward or away from the main shaft 102 can be limited, so that the distance between the first shell fixing frame 1013 and the second shell fixing frame 1014 and the main shaft 102 is equal when the first shell and the second shell are in any folded state. In addition, in the process of the first shell and the second shell moving from the flattened state to the closed state and from the closed state to the flattened state, the distances moved by the first shell fixing frame 1013 relative to the main shaft 102 can be equal, and the distances moved by the second shell fixing frame 1014 relative to the main shaft 102 can be equal. Therefore, when the first hinge mechanism 1 is applied to an electronic device, the extension length of the support surface formed by the first shell 3, the second shell 4 and the first hinge mechanism 1 in the flattened state can be adapted to the flattened length of the corresponding part of the flexible display screen, and when the first shell and the second shell are in the closed state, the folding requirement of the part of the flexible display screen corresponding to the first hinge mechanism can be met, thereby avoiding deformation of the flexible display screen and reducing the extrusion or pulling stress on the flexible display screen, thereby extending the service life of the flexible display screen and improving the reliability of the electronic device.

[0252] It is understandable that during the process of unfolding and closing the first shell and the second shell, by making the first shell 3 and the second shell 4 move synchronously, the risk of the flexible display screen being subjected to instantaneous squeezing or pulling stress can be effectively reduced. Based on this, the first hinge mechanism 1 provided in the embodiment of the present application may also include a first synchronization component 103. In specific implementation, refer to Fig.24 , Fig.24The cross-sectional view of the first synchronous assembly 103 of the first rotating shaft mechanism 1 provided in the embodiment of the present application when the first housing and the second housing are in a flattened state. The first synchronous assembly 103 may include a first gear connecting rod 1031 and a second gear connecting rod 1032, and the first gear connecting rod 1031 and the second gear connecting rod 1032 are rotatably connected to the main shaft 102. In a specific implementation, the first gear connecting rod 1031 includes a first gear 10311 and a first connecting rod 10312, and the first gear 10311 may be rotatably connected to the main shaft 102 through a fifth rotating shaft 10313 to improve the stability of the first gear connecting rod 1031 rotating around the main shaft 102, wherein the extension direction of the axis of the fifth rotating shaft 10313 is the same as the length direction of the rotating shaft mechanism 1. In addition, the first shell fixing frame 1013 is also provided with a third slide groove 10133, which is spaced apart from the first slide groove 10131. The first connecting rod 10312 is installed in the third slide groove 10133 and can slide in the third slide groove 10133 relative to the first shell fixing frame 1013 in a direction toward or away from the first base 1021, thereby realizing a sliding connection between the first connecting rod 10312 and the first shell fixing frame 1013.

[0253] Similarly, the second gear connecting rod 1032 may include a second gear 10321 and a second connecting rod 10322. The second gear 10321 may be rotatably connected to the main shaft 102 via the sixth rotating shaft 10323 to improve the stability of the second gear connecting rod 1032 rotating around the main shaft 102. The axis of the sixth rotating shaft 10323 is parallel to the axis of the fifth rotating shaft 10313, and in the present application, the second gear 10321 is transmission-connected to the first gear 10311. In the present application, the transmission connection between the second gear 10321 and the first gear 10311 may be achieved by meshing the second gear 10321 with the first gear 10311, or an intermediate gear may be provided between the first gear 10311 and the second gear 10321, so that the transmission connection between the first gear 10311 and the second gear 10321 is achieved by meshing the first gear 10311 and the second gear 10321 with adjacent intermediate gears.

[0254] In addition, the second shell fixing frame 1014 is also provided with a fourth slide groove 10143, which is spaced apart from the second slide groove 10141. The second connecting rod 10322 is installed in the fourth slide groove 10143 and can slide in the fourth slide groove 10143 relative to the second shell fixing frame 1014 in a direction toward or away from the first base 1021, thereby realizing a sliding connection between the second connecting rod 10322 and the second shell fixing frame 1014.

[0255] Based on the above introduction to the structure of the first synchronization component 103, you can also refer to Fig.24 and Fig.25 , Fig.25 The first rotating shaft mechanism 1 provided in the embodiment of the present application is a cross-sectional view of the first synchronous assembly 103 when the first housing and the second housing are in a closed state. When the first housing and the second housing are in a process of changing from a flattened state to a closed state, the rotation of the first housing fixing frame 1013 can drive the first gear connecting rod 1031 to rotate around the first base 1021. Because the first gear 10311 of the first gear connecting rod 1031 is in transmission connection with the second gear 10321 of the second gear connecting rod 1032, the rotation of the first gear connecting rod 1031 can drive the second gear connecting rod 1032 to rotate in the opposite direction, and the sliding of the second gear connecting rod 1032 along the fourth slide groove 10143 of the second housing fixing frame 1014 drives the second housing fixing frame 1014 to rotate in the same direction, thereby realizing the synchronous rotation of the first housing fixing frame 1013 and the second housing fixing frame 1014 in the opposite direction. In addition, when the first shell and the second shell are in the process of changing from a closed state to an unfolded state, the movement direction of each structure is opposite to the movement direction of the first shell 3 and the second shell 4 in the process of changing from a flat state to a closed state in the above text, which will not be repeated here, thereby realizing the synchronous opposite rotation of the first shell fixing frame 1013 and the second shell fixing frame 1014.

[0256] The first rotating shaft mechanism 1 provided in the present application can realize its rotation function by pulling the connecting rods together, and can realize the synchronous rotation of the two housing fixing frames in the opposite or opposite directions by setting the first synchronization component 103. In addition, since the structures of the mechanism for realizing the rotation function and the mechanism for realizing the synchronization function of the first rotating shaft mechanism 1 are relatively simple, it can effectively simplify the structure of the entire first rotating shaft mechanism 1, thereby facilitating the miniaturization design of the first rotating shaft mechanism 1 and reducing the cost of the first rotating shaft mechanism 1. In addition, since the mechanism for realizing the rotation function and the mechanism for realizing the synchronization function of the first rotating shaft mechanism 1 are two sets of independent mechanisms, the failure of any one set of mechanisms will not affect the realization of the function of the other set of mechanisms, which can effectively improve the reliability of the first rotating shaft mechanism 1.

[0257] The above describes in detail some possible design methods of the first rotating shaft mechanism 1 of the electronic device provided in the embodiment of the present application. Based on the design principle of the first rotating shaft mechanism 1, the specific structure of the first rotating shaft mechanism 1 can also be adaptively modified according to practical applications. Fig.26 , Fig.26 This is a schematic diagram of another connection relationship between the first housing 3, the second housing 4 and the first rotating shaft mechanism 1 of the electronic device provided in the embodiment of the present application in a flattened state. Fig.26In the electronic device shown in the figure, the first hinge mechanism 1 also includes a first under-screen support member 104 and a second under-screen support member 105. The first under-screen support member 104 is located between the first shell fixing frame 1013 and the main shaft 102, and the second under-screen support member 105 is located between the second shell fixing frame 1014 and the main shaft 102. Fig.26 In the flattened state, the first under-screen support member 104 and the second under-screen support member 105 are used to achieve flat support for the flexible display screen 6 .

[0258] In addition, refer to Fig. 27 , Fig. 27 for Fig.26 The structure shown is in a closed state. Fig.26 and Fig. 27 It can be understood that during the process of the first shell 3 and the second shell 4 being flattened to the closed state, the first under-screen support member 104 and the second under-screen support member 105 rotate toward each other around the main axis 102. Fig. 27 In the closed state shown, the first under-screen support member 104 and the second under-screen support member 105 can be used to support the bent portion of the flexible display screen 6 , which is beneficial to improving the support reliability of the first hinge mechanism 1 for the flexible display screen 6 .

[0259] It should be understood that in order to realize the above-mentioned electronic device, in the present application, the design of the first rotating shaft mechanism 1 is not limited to that mentioned in the above embodiment, as long as the first rotating shaft mechanism 1 can realize the following state, that is:

[0260] When the first shell 3 and the second shell 4 are in the flattened state, the support surface 1a of the first rotating shaft mechanism, the support surface 3a of the first shell, and the support surface 4a of the second shell can jointly play the role of flattening the flexible display screen 6. When the first shell 3 and the second shell 4 are in the process of changing from the flattened state to the closed state, the first shell 3 and the second shell 4 can rotate in opposite directions and drive the flexible display screen 6 to bend. When the first shell 3 and the second shell 4 are in the process of changing from the closed state to the flattened state, the first shell 3 and the second shell 4 can rotate in opposite directions and drive the flexible display screen 6 to unfold.

[0261] The exemplary design of the first hinge mechanism 1 of the electronic device provided in the embodiment of the present application is described above. Next, the exemplary design of the second hinge mechanism 2 of the electronic device provided in the embodiment of the present application is described in detail.

[0262] Reference Fig.28 , Fig.28The second rotating shaft mechanism 2 provided in the embodiment of the present application is an exploded structural diagram. In the present application, the second rotating shaft mechanism 2 may include one second rotating module 201, or may include multiple second rotating modules 201. For example, Fig.28 The second hinge mechanism 2 shown includes three second rotation modules 201, and the three second rotation modules 201 can be arranged at intervals along the length direction of the second hinge mechanism 2. In the present application, the length direction of the second hinge mechanism 2 is the extension direction of the axis around which the second housing 4 and the third housing 5 rotate around the second hinge mechanism 2. The second housing 4 and the third housing 5 can be rotatably connected through the plurality of second rotation modules 201, which can effectively improve the stability of the second housing 4 and the third housing 5 of the electronic device rotating relative to the second hinge mechanism 2.

[0263] When specifically setting the second rotating module 201, please refer to Fig.29 , Fig.29 This is an exploded view of the partial structure of the second rotating shaft mechanism 2 provided in a possible embodiment of the present application. Fig.28 and Fig.29 In the present application, the second rotating module 201 may include a third rotating component 201a and a fourth rotating component 201b.

[0264] Reference Fig.30 , Fig.30 The partial structural diagram of the second rotating shaft mechanism 2 provided for a possible embodiment of the present application. In the present application, the second rotating shaft mechanism 2 may also include a second base 206. Fig.29 and Fig.30 , the second base 206 can be used as a bearing component of the third rotating assembly 201a and the fourth rotating assembly 201b, the third rotating assembly 201a and the fourth rotating assembly 201b are respectively arranged on both sides of the second base 206, and the third rotating assembly 201a and the fourth rotating assembly 201b can be symmetrically arranged relative to the second base 206. For ease of description, in the following embodiments of the present application, the second rotating module 201 is mainly described by taking the specific arrangement of the third rotating assembly 201a and the connection relationship between the third rotating assembly 201a and the second base 206 as an example, and the fourth rotating assembly 201b side can be arranged with reference to the third rotating assembly 201a side.

[0265] It is worth mentioning that in a possible embodiment of the present application, when there are multiple second rotating modules 201, the third rotating components 201a and the fourth rotating components 201b of the multiple second rotating modules 201 can all use the same second base 206 as a bearing component to improve the integration of the second rotating shaft mechanism 2. In some other possible embodiments of the present application, the second rotating shaft mechanism 2 can be provided with a second base 206 corresponding to each second rotating module 201, so that the third rotating component 201a and the fourth rotating component 201b of each second rotating module 201 use the corresponding second base 206 as a bearing component.

[0266] You can continue to refer to Fig.30 In the present application, the third rotating assembly 201a may include a third supporting arm 2012, and the third supporting arm 2012 may be rotatably connected to the second base 206. Exemplarily, the third supporting arm 2012 may be rotatably connected to the second base 206 via a pin 2061. In a specific implementation, the second base 206 may be provided with a damping bracket 2062, and the pin 2061 may be simultaneously penetrated through the damping bracket 2062 and the third supporting arm 2012, so that the third supporting arm 2012 is rotatably connected to the second base 206 through the pin 2061.

[0267] It is worth mentioning that in the present application, in addition to the use of the pin 2061 to realize the rotational connection between the third support arm 2012 and the damping bracket 2062, in some possible embodiments, the third support arm 2012 can also use a virtual axis to realize the rotational connection with the damping bracket 2062. Exemplarily, an arc groove can be provided on the damping bracket 2062, and an arc rotating block can be provided on the third support arm 2012, so that the rotation of the third support arm 2012 and the damping bracket 2062 is realized by sliding the arc rotating block along the groove surface of the arc groove.

[0268] In the present application, the third rotating assembly 201a may further include a third swing arm 2013, and the third swing arm 2013 is rotatably connected to the second base 206. In a possible embodiment of the present application, the third swing arm 2013 and the second base 206 may be rotatably connected by a virtual axis. For example, see Fig.31 , Fig.31 The schematic diagram of the structure of the third swing arm 2013 provided in a possible embodiment of the present application. The end of the third swing arm 2013 for connecting with the second base 206 may be provided with a third arc-shaped rotating block 20131 .

[0269] In addition, please refer to Fig.32 , Fig.32The second base 206 may be provided with a fifth arc groove 2063. Fig.31 The third arc-shaped rotating block 20131 of the third swing arm 2013 shown in the figure can be accommodated in the fifth arc-shaped groove 2063, and can rotate along the arc surface of the fifth arc-shaped groove 2063, so as to realize the rotation of the third swing arm 2013 around the second base 206. By making the third swing arm 2013 and the second base 206 realize rotation connection through the virtual axis, it can be helpful to reduce the space occupied by the third swing arm 2013 on the second base 206, so as to reduce the volume of the second rotating module 201, so as to realize the miniaturization design of the second rotating shaft mechanism 2. It is worth mentioning that in the present application, the third arc-shaped rotating block 20131 can be, but not limited to, a circular arc-shaped rotating block, and the fifth arc-shaped groove 2063 can be, but not limited to, a circular arc-shaped groove.

[0270] You can continue to refer to Fig.32 The second rotating shaft mechanism 2 may further include a second cover plate 2014, which may be covered on the second base 206 to form a receiving space between the second cover plate 2014 and the second base 206. It is worth mentioning that in the present application, a second cover plate 2014 may be separately provided for each second rotating module 201 to make its structure more flexible. Alternatively, a plurality of second rotating modules 201 may share a second cover plate 2014 to simplify the structure of the second rotating shaft mechanism 2. In addition, by Fig.32 It can be seen that the surface of the second cover plate 2014 facing the fifth arc groove 2063 may be provided with a first arc protrusion 20141. Fig.31 The third arc-shaped rotating block 20131 of the third swing arm 2013 shown in the figure can be inserted between the first arc-shaped protrusion 20141 and the fifth arc-shaped groove 2063. Thus, the first arc-shaped protrusion 20141 restricts the third arc-shaped rotating block 20131 of the third swing arm 2013 in the fifth arc-shaped groove 2063 of the second base 206, so as to reduce the risk of the third swing arm 2013 falling off from the second base 206, thereby improving the reliability of the movement of the third swing arm 2013.

[0271] In another possible embodiment of the present application, the fifth arc groove 2063 can also be an integrated channel structure directly opened on the second base 206. In this way, the integrated design of the second base 206 can be realized, and the structural reliability of the shaft mechanism can be improved. In addition, the number of the fifth arc groove 2063 can be but is not limited to at least two, and the at least two fifth arc grooves 2063 can be arranged at intervals in the length direction of the second base 206, and the at least two fifth arc grooves 2063 can realize the limiting of the third arc rotating block 20131, so as to improve the reliability of the connection between the third arc rotating block 20131 and the second base 206.

[0272] In some other embodiments of the present application, the third swing arm 2013 and the second base 206 can also be rotatably connected by a physical axis. Exemplarily, the third swing arm 2013 can be rotatably connected to the second base 206 by a pin. In this way, when the shaft mechanism includes a plurality of second rotating modules 201, the third swing arm 2013 of at least one of the plurality of second rotating modules 201 can be rotatably connected to the second base 206 by a virtual axis, and the third swing arm 2013 of at least one second rotating module 201 can be rotatably connected to the second base 206 by a solid axis. At this time, the third swing arm 2013 of the second rotating module 201 arranged opposite to the flexible display screen 6 of the electronic device can be rotatably connected to the second base 206 by a virtual axis connection, and the third swing arm 2013 of the main shaft assembly 101 located at the two ends of the length direction of the shaft mechanism can be rotatably connected to the second base 206 by a physical axis connection.

[0273] You can continue to refer to Fig.30 In the present application, the third rotating assembly 201a may further include a third shell fixing frame 2015, which is fixedly connected to the second shell 4, and the third shell fixing frame 2015 may be connected to the third support arm 2012 and the third swing arm 2013.

[0274] When specifically setting the third housing fixing frame 2015, please refer to Fig.33 , Fig.33 A schematic diagram of the structure of a third housing fixing frame 2015 provided for a possible embodiment of the present application. In this embodiment, the third housing fixing frame 2015 may be provided with a fifth slide groove 20151, and the fifth slide groove 20151 extends along the first direction A. Fig.30 and Fig.33, the third support arm 2012 can be installed in the fifth slide groove 20151, and can slide in the fifth slide groove 20151. The first direction A can be the direction in which the third housing fixing frame 2015 moves toward or away from the second base 206. In addition, in order to prevent the third support arm 2012 from falling off from the fifth slide groove 20151, a first slideway 201511 can be provided on the groove wall of the fifth slide groove 20151, and a first slider 20121 can be provided on the third support arm 2012. In this way, the first slider 20121 can be clamped in the first slideway 201511, and the first slider 20121 can slide along the first slideway 201511, so as to limit the third support arm 2012 in the fifth slide groove 20151. In addition, by setting the first slideway 201511 on the groove wall of the fifth slide groove 20151, it can provide guidance for the sliding of the third support arm 2012 along the fifth slide groove 20151, thereby improving the stability of the movement of the third support arm 2012.

[0275] You can continue to refer to Fig.33 The third housing fixing frame 2015 may also be provided with a sixth slide groove 20152, which may extend along the second direction B, and along the length direction of the third housing fixing frame 2015, the fifth slide groove 20151 and the sixth slide groove 20152 are arranged at intervals. Fig.31 and Fig.33 , the end of the third swing arm 2013 facing the third housing fixing frame 2015 can be installed in the sixth slide groove 20152, and the third swing arm 2013 can slide in the sixth slide groove 20152. It should be noted that in the present application, the third housing fixing frame 2015 may include a first surface 2015a and a second surface 2015b disposed opposite to each other, wherein the first surface 2015a may be a side surface of the third housing fixing frame 2015 facing the flexible display screen 6 when the second rotating shaft mechanism 2 is applied to the electronic device. Then the second direction B may be a direction from the first surface 2015a to the second surface 2015b, or from the second surface 2015b to the first surface 2015a. In addition, the projection of the second direction B on the first section may not be parallel to the projection of the first direction A on the first section, wherein the first section may be a reference plane perpendicular to the rotation axis of the third support arm 2012 and the rotation axis of the third swing arm 2013.

[0276] In addition, you can continue to refer to Fig.33 In the present application, a second slideway 201521 may also be provided in the sixth slide groove 20152, and Fig.31The second slider 20132 is provided on the third swing arm 2013 shown in the figure. In this way, the second slider 20132 can be clamped in the second slideway 201521, and the second slider 20132 can slide in the second slideway 201521 along the second direction B, so as to limit the third swing arm 2013 in the sixth slideway 20152, thereby preventing the third swing arm 2013 from falling off from the sixth slideway 20152. In addition, by providing the second slideway 201521 on the groove wall of the sixth slideway 20152, it can provide guidance for the sliding of the third swing arm 2013 along the sixth slideway 20152, thereby improving the stability of the movement of the third swing arm 2013.

[0277] As can be seen from the above, in the present application, the fourth rotating assembly 201b can be symmetrically arranged with the third rotating assembly 201a relative to the second base 206. Fig.28 and Fig.30 , the fourth rotating assembly 201b may include a fourth housing fixing frame 2019, a fourth supporting arm 2020 and a fourth swing arm 2021. The fourth housing fixing frame 2019 is fixedly connected to the third housing 5, and the fourth housing fixing frame 2019 has a third surface 2019a and a fourth surface 2019b which are arranged opposite to each other. When the second rotating shaft mechanism is used in the electronic device, the third surface 2019a is a side surface of the fourth housing fixing frame 2019 which faces the flexible display screen 6. In addition, the fourth housing fixing frame 2019 may include a seventh slide groove 20191 extending along the third direction C and an eighth slide groove 20192 extending along the fourth direction D. The fourth supporting arm 2020 may slide in the seventh slide groove 20191, and the fourth swing arm 2021 may slide in the eighth slide groove 20192. The projection of the third direction C on the second section is not parallel to the projection of the fourth direction D on the second section. The second section is a reference plane perpendicular to the rotation axis of the fourth supporting arm 2020 and the rotation axis of the fourth swing arm 2021.

[0278] In addition, you can continue to refer to Fig.29 , the seventh slide 20191 may be provided with a third slide 201911, the fourth support arm 2020 may be provided with a third slider 202001, the eighth slide 20192 may be provided with a fourth slide 201921, and the fourth swing arm 2021 may be provided with a fourth slider 202102. The third slide 201911 may be provided with reference to the first slide 201511, the third slider 202001 may be provided with reference to the first slider 20121, the fourth slide 201921 may be provided with reference to the second slide 201521, and the fourth slider 202102 may be provided with reference to the second slider 20132, which will not be described in detail herein.

[0279] In this application, the fourth swing arm 2021 can refer to Fig.31In order to realize the rotation connection between the fourth swing arm 2021 and the second base 206, the third swing arm 2013 shown in FIG. Fig.32 The second base 206 includes a sixth arc groove 2064, and the fourth swing arm 2021 is provided with a fourth arc rotating block 202101 (refer to Fig.29 ). In addition, continue to refer to Fig.32 The surface of the second cover plate 2014 facing the sixth arc groove 2064 may also be provided with a second arc protrusion 20142, wherein the sixth arc groove 2064 may be provided with reference to the fifth arc groove 2063, the fourth arc rotating block 202101 may be provided with reference to the third arc rotating block 20131, and the second arc protrusion 20142 may be provided with reference to the first arc protrusion 20141, which will not be elaborated herein.

[0280] After understanding the connection relationship between the third rotating assembly 201a and the fourth rotating assembly 201b and the second base 206 provided in the above embodiment of the present application, the movement of the rotating shaft mechanism is described below. Fig.34a , Fig.34a The schematic diagram of the structure of the second rotating shaft mechanism in the flattened state is shown. At this time, the distance between the edge of the third housing fixing frame 2015 facing the second base 206 and the second base 206 is the shortest, and the distance between the second slider 20132 of the third swing arm 2013 and the first surface 2015a of the third housing fixing frame 2015 is the shortest.

[0281] It can be known from the above embodiments that when the second housing 4 and the third housing 5 rotate from the flattened state to the closed state, the third support arm 2012 can slide in the fifth slide groove 20151 along the first direction A, and the third swing arm 2013 can slide in the sixth slide groove 20152 along the second direction B. Similarly, the fourth support arm 2020 can slide in the seventh slide groove 20191 along the third direction C, and the fourth swing arm 2021 can slide in the eighth slide groove 20192 along the fourth direction D.

[0282] In addition, please refer to Fig.34b , Fig.34b A schematic diagram of a first cross section provided by a possible embodiment is shown, in which the first direction A and the second direction B intersect in the first cross section, and the angle of intersection between the two can be an acute angle as shown in the figure, or can be other possible angles, such as a right angle or an obtuse angle. In addition, in the second cross section, the positional relationship between the third direction C and the fourth direction D can be the same as Fig.34b The positional relationship between the first direction A and the second direction B shown in FIG. 1 is symmetrical and will not be described in detail here.

[0283] Please refer to Fig.34c , Fig.34cSchematic diagram of the structure when the second shell 4 and the third shell 5 are in the middle state. Fig.34c and Fig.34a It can be seen that in this process, the third housing fixing frame 2015 can move relative to the third support arm 2012 in a direction away from the second base 206, and drive the third support arm 2012 and the third swing arm 2013 to rotate around the second base 206. The third arc-shaped rotating block 20131 of the third swing arm 2013 moves in a direction of sliding out of the corresponding fifth arc-shaped groove 2063, thereby reducing the portion of the third arc-shaped rotating block 20131 accommodated in the corresponding fifth arc-shaped groove 2063. At the same time, the second slider 20132 of the third swing arm 2013 slides in the second slideway 201521 from the first surface 2015a of the third housing fixing frame 2015 to the second surface 2015b. Similarly, the fourth shell fixing frame 2019 can drive the fourth support arm 2020 and the fourth swing arm 2021 to rotate around the base. The specific movement process is similar to the movement process of the third shell fixing frame 2015 driving the third support arm 2012 and the third swing arm 2013 to rotate around the second base 206, and will not be repeated here.

[0284] In addition, refer to Fig.34d , Fig.34d FIG. 4 is a schematic diagram of the structure when the second shell 4 and the third shell 5 are in a closed state. Figure 34c to Figure 34d During the process, the third housing fixing frame 2015 continues to move relative to the third support arm 2012 in the direction away from the second base 206, and drives the third support arm 2012 to rotate around the second base 206. The third arc-shaped rotating block 20131 of the third swing arm 2013 continues to move in the direction of sliding out of the corresponding fifth arc-shaped groove 2063, so that the portion of the third arc-shaped rotating block 20131 accommodated in the corresponding fifth arc-shaped groove 2063 is further reduced. At the same time, the second slider 20132 of the third swing arm 2013 continues to slide in the sixth slide groove 20152 in the direction toward the second surface 2015b of the third housing fixing frame 2015. Similarly, the fourth housing fixing frame 2019 can drive the fourth support arm 2020 and the fourth swing arm 2021 to continue to rotate around the base, and its specific movement process is similar to the movement process of the third housing fixing frame 2015 driving the third support arm 2012 and the third swing arm 2013 to rotate around the second base 206, which will not be repeated here.

[0285] It can be understood that when the second shell 4 and the third shell 5 are Fig.34d The closed state shown is Fig.34a When the third housing fixing frame 2015, the third supporting arm 2012 and the third swing arm 2013, and the fourth housing fixing frame 2019, the fourth supporting arm 2020 and the fourth swing arm 2021 are rotated in the same direction as the above-mentioned Figures 34a to 34dThe movement is in the opposite direction of the rotation process, which will not be described in detail here.

[0286] Reference Fig.35 , Fig.35 This is a schematic diagram of the mechanism for the third support arm 2012 and the third swing arm 2013 to slide relative to the third housing fixing frame 2015 provided in one embodiment of the present application. Fig.35 It can be seen that, by using the second rotating shaft mechanism 2 provided by the present application, when the third support arm 2012 and the third swing arm 2013 rotate around the second base 206, their rotation axes do not overlap, so that the axis phase difference between the third support arm 2012 and the third swing arm 2013 can be achieved. In addition, by reasonably designing the opening directions of the fifth slide groove 20151 and the sixth slide groove 20152, the rotation angles of the third support arm 2012 and the third swing arm 2013 relative to the second base 206 can be no more than 90°. Compared with the existing solutions, it can effectively reduce the rotation angle of the third swing arm 2013, so that the local structure of the third swing arm 2013 (for example Fig.31 The wall thickness design of the structure at H of the third swing arm 2013 shown in FIG. 2 meets the strength requirement, thereby improving the structural reliability of the third swing arm 2013. It can be understood that Fig.35 It can also be used to represent the mechanism principle of the fourth support arm 2020 and the fourth swing arm 2021 sliding relative to the fourth housing fixing frame 2019. From the above analysis, it can be known that in the present application, by reasonably designing the opening directions of the seventh slide slot 20191 and the eighth slide slot 20192, the angles of rotation of the fourth support arm 2020 and the fourth swing arm 2021 relative to the second base 206 can be made not greater than 90°, thereby reducing the rotation angle of the fourth swing arm 2021, so that the wall thickness design of the local structure of the fourth swing arm 2021 meets the strength requirements, thereby improving the structural reliability of the fourth swing arm 2021. In addition, when the second rotating shaft mechanism 2 is used in electronic equipment, it can also effectively avoid the thinning design of the components in the electronic equipment to avoid the rotation of the third swing arm 2013 and the fourth swing arm 2021, which can improve the reliability of the overall structure of the electronic equipment.

[0287] In addition, you can continue to refer to Fig.34d When the second housing 4 and the third housing 5 are in a closed state, the third support arm 2012 and the third swing arm 2013 are in Fig.34dIn the Z direction shown in the figure, there is a support force for the third housing fixing frame 2015, which can effectively improve the movement combination degree between the third support arm 2012, the third swing arm 2013 and the third housing fixing frame 2015, and play a role of stopping the third housing fixing frame 2015 in this direction. Similarly, the fourth support arm 2020 and the fourth swing arm 2021 can also have a support force for the fourth housing fixing frame 2019 in the Z direction, which can effectively improve the movement combination degree between the fourth support arm 2020, the fourth swing arm 2021 and the fourth housing fixing frame 2019, and play a role of stopping the fourth housing fixing frame 2019 in this direction. In this way, even if the electronic device using the rotating shaft mechanism falls in the closed state, the risk of the third housing fixing frame 2015 and the fourth housing fixing frame 2019 having a large instantaneous displacement relative to the rotating shaft mechanism in this state can be effectively reduced, thereby ensuring the reliability of the overall structure of the electronic device.

[0288] In the present application, the second slider 20132 of the third swing arm 2013 can be used as follows Fig.31 The straight slider shown in the figure, the second slideway 201521 can also be adaptively set as follows Fig.34a In addition, the linear slide has an opening located on the first surface 2015a, when the shaft mechanism is in Fig.34a In the flattened state shown, the linear slide extends from the opening toward the second base 206 to improve the smoothness of the second slider 20132 sliding along the second slide 201521, and can reduce the interference of other structures of the rotating shaft mechanism on the third swing arm 2013, so as to increase the wall thickness of the third swing arm 2013, so as to improve the structural reliability of the third swing arm 2013. In some other possible implementations of the present application, the linear slide can also be extended from the opening to the direction away from the base, or the linear slide can also be extended from the opening to the direction perpendicular to the second surface 2015b, so that the second slide 201521 is more flexible. It is worth mentioning that in the present application, the second slider 20132 can also be other shapes that are adapted to the linear slide, for example, it can be a slider in the form of an overall straight line with a hollow, spaced, etc. design in the middle part, or it can be some special-shaped sliders, as long as it can fit the shape of the linear slide to slide.

[0289] In the present application, the fourth slide 201921 can be symmetrically arranged with the second slide 201521. The specific arrangement method can refer to the second slide 201521 and will not be described in detail here. In addition, the fourth slider 202102 can be a linear slider or other shapes that are adapted to the linear slide. For example, it can be a slider that is in an overall linear form with a hollow or spaced middle portion, or it can be some special-shaped sliders. Any slider that can slide in the shape of a linear slide can be used.

[0290] The second slider 20132 of the third swing arm 2013 may be designed as other possible structures in addition to the above-mentioned linear structure. Fig.36 , Fig.36 Another structural schematic diagram of the third swing arm 2013 provided in the embodiment of the present application. In this embodiment, the second slider 20132 of the third swing arm 2013 can also be designed as an arc slider, which can be an arc slider for example. In addition, in order to enable the arc slider of the third swing arm 2013 to slide in the second slideway 201521 of the sixth slide groove 20152 of the third housing fixing frame 2015, the second slideway 201521 can also be formed by Fig.34a The linear slide shown is adapted to be designed as an arc slide, which can be exemplarily a circular arc slide. When the shaft mechanism is in a flattened state, the axis of the arc slide is located on the side of the second base 206 away from the arc slide. In this way, it is helpful to improve the smoothness of the second slider 20132 sliding along the second slide 201521, and the angle of rotation of the third swing arm 2013 relative to the second base 206 is 90°, so as to effectively reduce the interference of other structures of the shaft mechanism on the movement of the third swing arm 2013, thereby facilitating the increase of the wall thickness of the third swing arm 2013. In addition, Fig.36 It can also represent the structure of the fourth swing arm 2021. Its specific configuration can refer to the above introduction to the third swing arm 2013, which will not be repeated here.

[0291] In this embodiment, the sliding of the third swing arm 2013 in the sixth slide groove 20152 and the sliding of the fourth swing arm 2021 in the eighth slide groove 20192 are the sliding of the arc-shaped slider in the arc-shaped slideway. Fig.37a , Fig.37a The structure diagram shown is when the second shell 4 and the third shell 5 are in a flattened state. At this time, the distance between the edge of the third shell fixing frame 2015 facing the second base 206 and the second base 206 is the shortest, and the distance between the second slider 20132 of the third swing arm 2013 and the first surface 2015a of the third shell fixing frame 2015 is the shortest.

[0292] It can be known from the above embodiments that when the second housing 4 and the third housing 5 rotate from the flattened state to the closed state, the third support arm 2012 can slide in the fifth slide groove 20151 along the first direction, and the third support arm 2012 can slide in the sixth slide groove 20152 along the second direction. Similarly, the fourth support arm 2020 can slide in the seventh slide groove 20191 along the third direction, and the fourth swing arm 2021 can slide in the eighth slide groove 20192 along the fourth direction. Fig.37a In the figure, the solid lines with arrows represent the first direction and the third direction, respectively, and the dotted lines with arrows represent the second direction and the fourth direction, respectively. Figure 37b , Figure 37b Another schematic diagram of the first cross section provided by the embodiment of the present application is shown, in which the first direction and the second direction intersect in the first cross section. In addition, in the second cross section, the positional relationship between the third direction and the fourth direction can be the same as Figure 37b The positional relationship between the first direction and the second direction shown in FIG. 1 is symmetrical and will not be described in detail here.

[0293] It should be noted that, in the present application, the projection of the second direction on the first section is not parallel to the projection of the first direction on the first section, and the projection of the fourth direction on the second section is not parallel to the projection of the third direction on the second section. Fig.34b and Figure 37b In addition to the intersection shown, it can also refer to the two being Fig.37c The tangency relationship shown, or Fig.37d The phase separation relationship shown is not specifically limited in this application.

[0294] When the second housing 4 and the third housing 5 rotate from the flattened state to the closed state, the third support arm 2012 can move along the first slide groove. Fig.37a The third swing arm 213 can slide in the first direction shown in the second slide groove. Fig.37a In addition, please refer to Fig.38 , Fig.38 Schematic diagram of the structure when the second shell 4 and the third shell 5 are in the middle state. Fig.38 and Fig.37aIt can be seen that in this process, the third housing fixing frame 2015 can move relative to the third support arm 2012 in a direction away from the second base 206, and drive the third support arm 2012 and the third swing arm 2013 to rotate around the second base 206. The third arc-shaped rotating block 20131 of the third swing arm 2013 moves in a direction of sliding out of the corresponding fifth arc-shaped groove 2063, thereby reducing the portion of the third arc-shaped rotating block 20131 accommodated in the corresponding fifth arc-shaped groove 2063. At the same time, the second slider 20132 of the third swing arm 2013 slides in the second slideway 201521 from the first surface 2015a of the third housing fixing frame 2015 to the second surface 2015b. Similarly, the fourth shell fixing frame 2019 can drive the fourth support arm 2020 and the fourth swing arm 2021 to rotate around the base. The specific movement process is similar to the movement process of the third shell fixing frame 2015 driving the third support arm 2012 and the third swing arm 2013 to rotate around the second base 206, and will not be repeated here.

[0295] In addition, refer to Fig.39 , Fig.39 FIG. 4 is a schematic diagram of the structure when the second shell 4 and the third shell 5 are in a closed state. Figure 38 to Figure 39 During the process, the third housing fixing frame 2015 continues to move relative to the third support arm 2012 in the direction away from the second base 206, and drives the third support arm 2012 and the third swing arm 2013 to continue to rotate around the second base 206. The third arc-shaped rotating block 20131 of the third swing arm 2013 continues to move in the direction of sliding out of the corresponding fifth arc-shaped groove 2063, so that the part of the third arc-shaped rotating block 20131 accommodated in the corresponding fifth arc-shaped groove 2063 is further reduced. At the same time, the second slider 20132 of the third swing arm 2013 continues to slide in the second slideway 201521 in the direction toward the second surface 2015b of the third housing fixing frame 2015. Similarly, the fourth shell fixing frame 2019 can drive the fourth support arm 2020 and the fourth swing arm 2021 to continue to rotate around the base. The specific movement process is similar to the movement process of the third shell fixing frame 2015 driving the third support arm 2012 and the third swing arm 2013 to rotate around the second base 206, and will not be repeated here.

[0296] It is understandable that when the shaft mechanism is Fig.39 The closed state shown is Fig.37a When the third housing fixing frame 2015, the third supporting arm 2012 and the third swing arm 2013, and the fourth housing fixing frame 2019, the fourth supporting arm 2020 and the fourth swing arm 2021 are rotated in the same direction as the above-mentioned Figure 37a to Figure 39 The movement is in the opposite direction of the rotation process, which will not be described in detail here.

[0297] In some other possible embodiments of the present application, when the rotating shaft mechanism is in the flattened state, the axis of the arcuate slideway may also be located on the side of the arcuate slideway facing the second base 206. In this way, during the rotation of the rotating shaft mechanism from the flattened state to the closed state, the second slider 20132 of the third swing arm 2013 slides in the second slideway 201521 from the second surface 2015b of the third housing fixing frame 2015 in the direction toward the first surface 2015a. During the rotation of the rotating shaft mechanism from the closed state to the flattened state, the second slider 20132 of the third swing arm 2013 slides in the second slideway 201521 from the first surface 2015a of the third housing fixing frame 2015 in the direction toward the second surface 2015b.

[0298] It is worth mentioning that in the present application, when the second slideway 201521 is an arc-shaped slideway, the second slider 20132 can also be other shapes that are adapted to the arc-shaped slideway, for example, it can be an overall arc-shaped slider with a hollowed-out, spaced, etc. design in the middle part, or it can be some special-shaped sliders, as long as it can slide in the shape of the arc-shaped slideway. In addition, when the second slideway 201521 is an arc-shaped slideway, the sliding of the second slider 20132 in the second slideway 201521 can also be understood as the second slider 20132 realizing the rotation around the third shell fixing frame 2015 through the arc-shaped slideway.

[0299] In the present application, the fourth slide 201921 can be symmetrically arranged with the second slide 201521, and its specific arrangement can refer to the second slide 201521, which will not be described in detail here. In addition, the fourth slider 202102 can be an arc-shaped slider or other shapes that are adapted to the arc-shaped slide, for example, it can be an overall arc-shaped slider with hollowing, spacing, etc. in the middle part, or it can be some special-shaped sliders, as long as it can fit the shape of the arc-shaped slide to slide. In addition, when the fourth slide 201921 is a circular arc slide, the sliding of the fourth slider 202102 in the fourth slide 201921 can also be understood as the fourth slider 202102 realizing the rotation around the fourth shell fixing frame 2019 through the circular arc slide.

[0300] In various embodiments of the present application, in order to improve the consistency and smoothness of the movement of the third support arm 2012 and the third swing arm 2013 located on the same side, and the degree of integration of the third support arm 2012 and the third swing arm 2013 with the corresponding slide grooves. Fig.40a , Fig.40aThe schematic diagram of the connection structure of the third support arm 2012 and the third swing arm 2013 provided in the embodiment of the present application is shown. A first driving link 2016a may be provided between the third support arm 2012 and the third swing arm 2013, and the first driving link 2016a may be rotatably connected to the third support arm 2012 and the third swing arm 2013 respectively. Fig.40b , Fig.40b A schematic structural diagram of a first driving connecting rod 2016a provided for a possible embodiment of the present application. The first driving connecting rod 2016a may include a first connecting portion 20161 and a second connecting portion 20162.

[0301] Please refer to Fig.40c , Fig.40c The schematic diagram of the structure of the third support arm 2012 provided by a possible embodiment of the present application is shown. Fig.40b and Fig.40c In the present application, the first connecting portion 20161 of the first driving link 2016a can be connected to the first mounting hole 20122 of the third support arm 2012. The second connecting portion 20162 of the first driving link 2016a can be connected to the first mounting hole 20122 of the third support arm 2012. Fig.31 or Fig.36 The second mounting hole 20135 of the third swing arm 2013 shown in FIG.

[0302] In addition, please refer to Fig.41 , Fig.41 for Fig.40a The cross-sectional view of the structure at CC shown in FIG. Fig.40b and Fig.40c The first connecting portion 20161 is rotatably connected to the third support arm 2012 through the third connecting rod 20163, and the second connecting portion 20162 is rotatably connected to the swing arm 1013 through the fourth connecting rod 20164. It is worth mentioning that the axes of the third connecting rod 20163 and the fourth connecting rod 20164 do not overlap, so as to reduce the risk of interference with the respective movements of the third support arm 2012 and the third swing arm 2013.

[0303] By arranging the first driving link 2016a between the third supporting arm 2012 and the third swing arm 2013, when the rotating shaft mechanism is in the closed state, the third supporting arm 2012, the third swing arm 2013 and the first driving link 2016a can jointly support the third housing fixing frame 2015, so as to effectively improve the degree of movement coupling between the third supporting arm 2012, the third swing arm 2013 and the third housing fixing frame 2015, and at the same time, stop the third housing fixing frame 2015. In this way, even if the electronic device using the rotating shaft mechanism falls in the closed state, the risk of the third housing fixing frame 2015 having a large instantaneous displacement relative to the rotating shaft mechanism in this state can be effectively reduced, thereby ensuring the reliability of the overall structure of the electronic device.

[0304] In order to avoid the first driving link 2016a causing excessive constraints on the movement of the third support arm 2012 and the third swing arm 2013, it is also possible to refer to Fig.42 , Fig.42 for Fig.40a In this embodiment, the second slider 20132 of the third swing arm 2013 can be designed to be thinned so that the second slider 20132 of the third swing arm 2013 and the second slideway 201521 of the third housing fixing frame 2015 can be loosely matched. Fig.43 , Fig.43 Another structural schematic diagram of the third swing arm 2013 provided in the embodiment of the present application is shown. In this embodiment, the thickness of the second slider 20132 of the third swing arm 2013 is reduced so that the second slider 20132 and the Fig.42 There is a gap between the side walls of the second slideway 201521 shown in FIG. At this time, the shape of the second slider 20132 can be matched with the shape of the second slideway 201521. For example, when the second slideway 201521 is a rectangular slideway, the second slider 20132 can be set as a rectangular slider. Alternatively, the second slider 20132 can also be set as a pin, so that the second slider 20132 can slide in the second slideway 201521 and can also rotate relative to the second slideway 201521. Therefore, the freedom of movement of the third swing arm 2013 can be increased during the sliding of the second slider 20132 along the second slideway 201521, while taking into account the reliability of the cooperation between the third swing arm 2013 and the sixth slideway 20152 of the third housing fixing frame 2015.

[0305] It should be noted that, in the above embodiment, the first driving link 2016a is rotatably connected to the third support arm 2012 through the third link 20163, and is rotatably connected to the third swing arm 2013 through the fourth link 20164. In this way, the third support arm 2012, the third link 20163, the third swing arm 2013 and the fourth link 20164 can form a four-bar linkage. It can be understood that by adjusting the rod lengths between the structures in the four-bar linkage, the formed four-bar linkage structure can be a parallelogram or a non-parallelogram.

[0306] In addition, in addition to the configuration method provided in the above embodiment, the first driving connecting rod 216a can also be configured as shown in FIG. Fig.44a , Fig.44a Another schematic diagram of the connection structure of the third support arm 2012 and the third swing arm 2013 provided in the embodiment of the present application is shown. In this embodiment, the first driving link 2016a is also located between the third support arm 2012 and the third swing arm 2013. Different from the above embodiment, in this embodiment, the first connecting portion 20161 of the first driving link 2016a is slidably connected to the third swing arm 2013 through the third connecting rod 20163, and the second connecting portion 20162 is fixedly connected to the third support arm 2012.

[0307] Please refer to Figure 44b , Figure 44b Another structural schematic diagram of the third swing arm 2013 provided in the embodiment of the present application. Fig.44a and Figure 44b The end of the third swing arm 2013 facing the third support arm 2012 may be provided with a first guide groove 20134, and the third connecting rod 20163 may be inserted into the first guide groove 20134 and may slide along the groove surface of the first guide groove 20134, thereby realizing a sliding connection between the third connecting rod 20163 and the third swing arm 2013.

[0308] In addition, refer to Fig.44c , Fig.44c The schematic diagram of the structure of the first driving link 2016a connected to the third support arm 2012 is shown. In the present application, the second connection portion 20162 of the first driving link 2016a can be fixedly connected to the third support arm 2012 by bonding or threaded connection. In some other possible embodiments of the present application, the first driving link 2016a and the third support arm 2012 can also be an integrally formed structure.

[0309] It can be understood that in some possible embodiments of the present application, the first drive link 2016a can be slidably connected to the third support arm 2012 and fixedly connected to the third swing arm 2013. The specific setting method is similar to the above-mentioned embodiment in which the first drive link 2016a is slidably connected to the third swing arm 2013 and fixedly connected to the third support arm 2012, and will not be repeated here.

[0310] The first driving link 2016a adopts this arrangement, and can be reasonably designed through the first guide groove 20134 to improve the degree of combination between the third support arm 2012 and the third swing arm 2013 and the corresponding slide groove, thereby improving the consistency of the movement of the third support arm 2012 and the third swing arm 2013, and making the movement of the third support arm 2012 and the third swing arm 2013 smoother. In addition, when the electronic device using the rotating shaft mechanism falls in a closed state, the third support arm 2012, the third swing arm 2013 and the first driving link 2016a can jointly support the housing of the electronic device, thereby avoiding the housing from being instantly displaced greatly relative to the rotating shaft mechanism, so as to improve the reliability of the overall structure of the electronic device.

[0311] In addition, in this embodiment, in order to avoid the setting of the first driving link 2016a causing excessive constraints on the movement of the third support arm 2012 and the third swing arm 2013, the second slider 20132 of the third swing arm 2013 can also be designed to be thinned so that the second slider 20132 of the third swing arm 2013 and the second slide 201521 of the third shell fixing frame 2015 can be clearance-matched. The specific setting method can refer to the above embodiment and will not be repeated here.

[0312] It is worth mentioning that, refer to Fig.34a In the fourth rotating assembly 201b, a second driving link 2016b may be provided between the fourth support arm 2020 and the fourth swing arm 2021, and the second driving link 2016b may include a third connecting portion ( Fig.34a ) and the fourth connection portion ( Fig.34a The third connecting portion may be connected to the fourth swing arm 2021, and the fourth connecting portion may be connected to the fourth support arm 2020. The specific arrangement of the second driving link 2016b, the connection between the third connecting portion and the fourth swing arm 2021, and the connection between the fourth connecting portion and the fourth support arm 2020 may be arranged with reference to the first rotating assembly 1011. For example, the third connecting portion is rotationally connected to the fourth support arm through the fifth connecting rod, and the fourth connecting portion is rotationally connected to the fourth swing arm through the sixth connecting rod, wherein the axes of the fifth connecting rod and the sixth connecting rod are parallel and do not overlap, etc., which will not be described in detail here.

[0313] You can continue to refer to Fig.28 In the present application, the second rotating shaft mechanism 2 may include, in addition to the above structure, a first support plate 202 and a second support plate 203. The first support plate 202 and the second support plate 203 may be separately arranged as follows: Fig.30 The second base 206 is shown on opposite sides. In the present application, the first support plate 202 and the second support plate 203 can be symmetrically arranged relative to the second base 206. In the following embodiments, the specific arrangement of the first support plate 202 and the connection relationship between the first support plate 202 and the second base 206 are mainly used as examples for explanation, and the second support plate 203 side can be arranged with reference to the first support plate 202 side.

[0314] In the present application, the first support plate 202 is rotatably connected to the third housing fixing frame 2015. It should be noted that, in the present application, the first support plate 202 can be rotatably connected to multiple third housing fixing frames 2015 of multiple second rotating modules 201, which is conducive to simplifying the structure of the second rotating shaft mechanism 2 and improving the structural reliability of the second rotating shaft mechanism 2.

[0315] When the first support plate 202 and the third housing fixing frame 2015 are rotatably connected, the following may be referred to first. Fig.33 The third housing fixing frame 2015 shown in the figure may also be provided with a first rotation groove 20153, and the first rotation groove 20153 may be an arc-shaped groove. Fig.45 , Fig.45 Schematic diagram of the structure of the first support plate 202 provided in the embodiment of the present application. The end of the first support plate 202 facing the third shell fixing frame 2015 can be provided with a first rotating portion 20201, and the first rotating portion 20201 can be set to an arc shape, and can be exemplarily a circular arc shape. In this way, the first rotating portion 20201 can be installed in the first rotating groove 20153, and the first supporting plate 202 and the third shell fixing frame 2015 can be rotated relative to each other by the first rotating portion 20201 rotating along the groove surface of the first rotating groove 20153.

[0316] You can continue to refer to Fig.45 The first support plate 202 includes a first plate surface 202a and a second plate surface 202b which are arranged opposite to each other, wherein the first plate surface 202a can be used to support the flexible display screen 6. Fig.46 , Fig.46 This is a schematic diagram of the structure of the first support plate 202 provided in the embodiment of the present application supporting the flexible display screen 6. Fig.21 In the embodiment, the electronic device is in a flattened state, and the first plate surface 202a of the first support plate 202 and the cover plate ( Fig.45The surfaces of the flexible display screen 6 (not shown) facing the flexible display screen 6 may be in the same plane, thereby achieving flat support for the flexible display screen 6.

[0317] Reference Fig.47 , Fig.47 This is a cross-sectional view of the second rotating shaft mechanism 2 provided in the embodiment of the present application. Fig.47 It can be used to demonstrate the structure of the second plate surface 202b of the first support plate 202, and the connection relationship between the first support plate 202 and other structures. Among them, the second plate surface 202b of the first support plate 202 can be provided with a first guide portion 20202, and the first guide portion 20202 can be provided with a third track groove 202021. In addition, in the present application, the third swing arm 2013 can also be provided with a first guide structure 20133, and the first guide structure 20133 can be but not limited to a columnar structure, and the first guide structure 20133 can be inserted into the third track groove 202021 of the first guide portion 20202 of the first support plate 202, and can slide along the third track groove 202021. In this way, during the rotation of the third swing arm 2013 around the second base 206, the first support plate 202 can be driven to rotate around the third shell fixing frame 2015 on the corresponding side through the sliding of the first guide structure 20133 in the third track groove 202021. For example, when the two housing fixing frames rotate toward each other, the two swing arms rotate toward each other around the second base 206, thereby driving the ends of the two support plates close to the second base 206 to move in directions away from the second base 206. Fig.48 , Fig.48 It is shown that when the second housing 4 and the third housing 5 are in a closed state, the first support plate 202, the second support plate 203 and the second cover plate 2014 can form a screen-accommodating space 204, and the bent portion of the flexible display screen 6 can be accommodated in the screen-accommodating space 204. In this way, squeezing of the flexible display screen 6 can be avoided, thereby reducing the risk of damage to the flexible display screen 6.

[0318] In another possible embodiment of the present application, the first support plate 202 can also be driven to rotate around the housing fixing frame 1015 by the third support arm 2012. In specific implementation, the second plate surface 202b of the first support plate 202 can be provided with a first guide portion 20202, and the first guide portion 20202 can be provided with a third track groove 202021. In addition, a first guide structure 20133 can be provided on the third support arm 2012, and the first guide structure 20133 can be, but not limited to, a columnar structure, and the first guide structure 20133 can be inserted into the third track groove 202021 of the first guide portion 20202 of the first support plate 202, and can slide along the third track groove 202021. In this way, during the rotation of the third support arm 2012 around the second base 206, the first support plate 202 can be driven to rotate around the third housing fixing frame 2015 by the sliding of the first guide structure 20133 in the third track groove 202021. In some possible embodiments of the present application, the first support plate 202 can also be slidably connected to the third support arm 2012 and the third swing arm 2013 at the same time, and the sliding connection method can refer to the above embodiment, which is not repeated here. Thus, the rotation of the third support arm 2012 and the third swing arm 2013 around the second base 206 drives the first support plate 202 to rotate around the third housing fixing frame 2015.

[0319] Since the second support plate 203 is symmetrically arranged with the first support plate 202, when the second support plate 203 is specifically arranged, the second support plate 203 can be rotatably connected with the fourth housing fixing frame 2019, and the fourth housing fixing frame 2019 can be further referred to. Fig.47 , the fourth housing fixing frame 2019 has a second rotation groove 20193, and the second support plate 203 may be provided with a second rotation portion 2031, so that the second rotation portion 2031 rotates along the groove surface of the second rotation groove 20193. The second support plate 203 may also be provided with a second guide portion 2032, and the second guide portion 2032 has a fourth track groove 20321. In addition, the fourth support arm 2020 and / or the fourth swing arm 2021 may be provided with a second guide structure 202103, and the second guide structure 202103 may be inserted into the fourth track groove 20321 and may slide along the fourth track groove 20321. Therefore, when the fourth support arm 2020 and / or the fourth swing arm 2021 rotates, the second support plate 203 may be driven to rotate around the fourth housing fixing frame 2019 by sliding the second guide structure 202103 in the fourth track groove 20321.

[0320] In the present application, the fifth slide groove 20151 and the sixth slide groove 20152 are provided on the third housing fixing frame 2015, and during the process of the third housing fixing frame 2015 rotating around the second base 206, the third support arm 2012 slides in the fifth slide groove 20151 along the first direction, and the third swing arm 2013 slides in the sixth slide groove 20152 along the second direction, and the projection on the first section can intersect with the projection of the second direction on the first section, wherein the first section can be a reference plane perpendicular to the rotation axis of the third support arm 2012 and the rotation axis of the third swing arm 2013. Therefore, when the third support arm 2012 and the third swing arm 2013 rotate around the second base 206, their rotation axes do not overlap, so that the axis phase difference between the third support arm 2012 and the third swing arm 2013 can be achieved. In addition, by reasonably designing the opening directions of the fifth slide slot 20151 and the sixth slide slot 20152, the angles of rotation of the third support arm 2012 and the third swing arm 2013 relative to the second base 206 can be less than or equal to 90°. Based on the same principle, the angles of rotation of the fourth support arm 2020 and the fourth swing arm 2021 relative to the second base 206 can be less than or equal to 90°.

[0321] It can be understood that, in the second hinge mechanism 2 provided in the present application, the rotation angle of the third swing arm 2013 and the fourth swing arm 2021 can also be adjusted by adjusting the third track groove 202021 of the first support plate 202 and the fourth track groove 20321 of the second support plate 203. For example, the maximum rotation angle of the third swing arm 2013 can be made less than or equal to 90°. When the electronic device is in a closed state, the distance between the third swing arm 2013 and the flexible display screen 6 can be farther, thereby avoiding the third swing arm 2013 from squeezing or pulling the flexible display screen 6, so as to reduce the risk of damage to the flexible display screen 6 and extend its service life.

[0322] In addition to the above structure, in some embodiments of the present application, the second rotating shaft mechanism 2 may also be provided with other possible structures. Fig.49 , Fig.49 Another partial structural diagram of the second rotating shaft mechanism 2 provided in the embodiment of the present application. In this embodiment, the second rotating module 201 may also include a second synchronous assembly 2017. The second synchronous assembly 2017 may include a first driving gear 20171a disposed at the end of the third support arm 2012 and a second driving gear 20171b disposed at the end of the fourth support arm 2020, and the first driving gear 20171a and the second driving gear 20171b are meshed. In this way, when one support arm rotates around the second base 206, the other support arm can be driven to rotate synchronously around the second base 206 in the opposite or opposite directions, and the two support arms rotate at the same angle.

[0323] Reference Fig.50 , Fig.50 for Fig.49 , a cross-sectional view of the second rotating shaft mechanism 2 at EE shown in FIG. In the present application, the second synchronization assembly 2017 may further include a driven gear 20172, and the driven gear 20172 may be disposed between the two driving gears. In addition, the driven gears 20172 may be an even number, and the adjacent driven gears 20172 and the adjacent driven gears 20172 are meshed with each other and with the driving gear, so that the two driving gears can achieve synchronous rotation through the even number of driven gears 20172.

[0324] In order to improve the stability of the movement of the second synchronous assembly 2017, in the present application, the two driving gears can be respectively sleeved on the pins on the corresponding sides. In addition, the second synchronous assembly 2017 can also include an intermediate shaft 20173, which can be located between the two pins, and each driven gear 20172 is sleeved on an intermediate shaft 20173.

[0325] It is worth mentioning that in the present application, the second synchronization component 2017 can be arranged on the second base 206, and can be accommodated in the accommodation space formed between the second cover plate 2014 and the second base 206, so that the structure of the second rotating shaft mechanism 2 is relatively compact. In the second rotating shaft mechanism 2 provided in the present application, by setting the second synchronization component 2017, during the process of one support arm rotating around the second base 206, the other support arm can be driven to rotate synchronously around the second base 206 in the opposite or opposite directions. Since each support arm can slide along the slide groove of the shell fixing frame on the corresponding side, the shell fixing frame on the same side can be driven to rotate at the same angle during the process of the support arm rotating around the second base 206, so that the synchronous rotation of the two shell fixing frames can be realized during the synchronous rotation of the two support arms. Since the shell fixing frame can be fixedly connected to the shell of the electronic device, the synchronous rotation of the two shell fixing frames can make the two shells of the electronic device rotate synchronously. In this way, it is possible to avoid applying an instantaneous force to the flexible display screen 6 fixed to the two shells, which is conducive to improving the reliability of the flexible display screen 6.

[0326] You can continue to refer to Fig.50 In the present application, a damping assembly 2018 may also be provided in the second rotating module 201. The damping assembly 2018 may include an elastic member 20181 and a conjoined cam 20182. In the length direction of the second rotating module 201, the conjoined cam 20182 is located between the elastic member 20181 and the third support arm 2012, and the conjoined cam 20182 abuts against the third support arm 2012 under the elastic force of the elastic member 20181.

[0327] In addition, the end of the third support arm 2012 facing the integrated cam 20182 may be provided with a first cam surface, and the end of the fourth support arm 2020 facing the integrated cam 20182 may be provided with a second cam surface. When the third support arm 2012 is provided with a first active gear 20171a, and the fourth support arm 2020 is provided with a second active gear 20171b, the first cam surface may be provided at the end of the first active gear 20171a, and the second cam surface may be provided at the end of the second active gear 20171b. The end of the integrated cam 20182 facing the third support arm 2012 is provided with a third cam surface, and the end of the integrated cam 20182 facing the second support arm is provided with a fourth cam surface. Under the elastic force of the elastic member 20181, the corresponding first cam surface cooperates with the third cam surface, and the second cam surface cooperates with the fourth cam surface.

[0328] It is worth mentioning that in the present application, the cam surface includes a plurality of raised portions and recessed portions. When the inclined surfaces of the raised portions of the two cam surfaces are in contact with each other, a damping force that hinders the two cam surfaces from continuing to rotate relative to each other can be generated between the two cam surfaces. Based on this, when the two support arms rotate around the second base 206, the damping assembly 2018 can provide a certain damping force for the two support arms, and the damping force can be transmitted to the third shell fixing frame 2015 through the third support arm 2012, and transmitted to the fourth shell fixing frame 2019 through the fourth support arm 2020, so as to act on the two shells of the electronic device through the two shell fixing frames. In the present application, by arranging the damping assembly 2018 in the second rotating module 201, the electronic device can be prevented from opening and closing by mistake, and the two shells can be suspended at the set position. In addition, the user can have a more obvious feeling when the electronic device is unfolded or closed, which is conducive to improving the user experience.

[0329] When the elastic member 20181 is specifically arranged, it can include a plurality of springs arranged side by side. In addition, some springs in the elastic member 20181 can be sleeved on the pin 2061, and other springs can be sleeved on the intermediate shaft 20173, which is conducive to improving the stability of the movement of the elastic member 20181.

[0330] You can continue to refer to Fig.49The damping assembly 2018 may further include a stopper 20183, and the elastic member 20181 is located between the stopper 20183 and the integrated cam 20182. The stopper 20183 may also be sleeved on the pin 2061 and the intermediate shaft 20173. By providing the stopper 20183, the elastic member 20181 may be squeezed, so that the elastic member 20181 accumulates elastic force. In addition, the damping assembly 2018 may further include a retaining spring 20184. The stopper 20183 is located between the elastic member 20181 and the retaining spring 20184, and the retaining spring 20184 may be clamped on the pin 2061 and the intermediate shaft 20173 to limit the elastic member 20181 and the integrated cam 20182, so as to prevent the elastic member 20181 from falling off the pin 2061 and the intermediate shaft 20173.

[0331] Please refer to Fig.49 In the electronic device provided in the embodiment of the present application, the third shell fixing frame 2015 can be used to be fixedly connected to the second shell 4, and the fourth shell fixing frame 2019 can be used to be fixedly connected to the third shell 5.

[0332] In the electronic device provided in the present application, when the electronic device is in a flattened state, the first support plate 202, the second support plate 203 and the second cover plate 2014 of the second hinge mechanism 2 can play a role in flattening and supporting the flexible display screen 6, thereby ensuring the integrity of the electronic device in the flattened state and facilitating the improvement of the light and shadow of the flexible display screen 6. When the second shell 4 and the third shell 5 rotate from the flattened state to the closed state, the second shell 4 and the third shell 5 of the electronic device can respectively drive the shell fixing frame on the corresponding side to rotate around the second base 206, so that the shell fixing frame can drive the support arm and the swing arm arranged on the same side to rotate around the second base 206.

[0333] In this way, by reasonably designing the two slide slots of each housing fixing frame, the rotation angle of the support arm and the swing arm on the corresponding side relative to the second base 206 can be adjusted. Fig.31 and Fig.48 , so that when the electronic device is in a closed state, the third arc-shaped rotating block 20131 of the third swing arm 2013 is far away from the flexible display screen 6. Similarly, the fourth arc-shaped rotating block 202101 of the fourth swing arm 2021 is far away from the flexible display screen 6, thereby preventing the arc-shaped rotating blocks of the two swing arms from squeezing or pulling the flexible display screen 6, thereby reducing the risk of damage to the flexible display screen 6 and extending its service life.

[0334] It is worth mentioning that you can continue to refer to Fig.48In the present application, when the second rotating shaft mechanism 2 is provided with the first support plate 202 and the second support plate 203, the flexible display screen 6 of the electronic device can be fixedly connected with the first support plate 202 and the second support plate 203, and the connection method can be but not limited to bonding. In specific implementation, the flexible display screen 6 can be bonded to a part of the first support plate 202, for example, referring to Fig.51 , Fig.51 A structural diagram of an electronic device provided in an embodiment of the present application, in which the second housing 4 and the third housing 5 are in a flattened state. Fig.51 In the embodiment, the flexible display panel 6 can be bonded to the portion of the first support plate 202 close to the second base 206. In addition, the flexible display panel 6 can also be bonded to a partial area of ​​the second support plate 203, for example, it can be bonded to the portion of the second support plate 203 close to the second base 206. Thus, when the second shell 4 and the third shell 5 are in a flattened state, the second shell 4, the third shell 5, the first support plate 202, the second support plate 203 and the second cover plate 2014 can jointly play a role in stably supporting the flexible display panel 6.

[0335] In the process of the second shell 4 and the third shell 5 changing from the flat state to the closed state, the two support plates can drive the flexible display screen 6 to rotate, which can effectively prevent the flexible display screen 6 from being deformed, thereby reducing the risk of damage to the flexible display screen 6. Fig.52 , Fig.52 for Fig.51 The structure shown is a schematic diagram of a structure in a closed state. When the second shell 4 and the third shell 5 are in a closed state, the flexible display screen 6 can fit with the two support plates, which can help improve the light and shadow of the flexible display screen.

[0336] In addition, in the present application, the track grooves of the two support plates can be reasonably designed so that when the second housing 4 and the third housing 5 are in the closed state, a storage space sufficient to accommodate the bent portion of the flexible display screen 6 is formed between the two support plates and the second cover plate 2014, which can avoid the existence of a gap in the electronic device at the second hinge mechanism 2, thereby ensuring that the electronic device has a relatively complete shape in the closed state. In this way, damage to the flexible display screen 6 caused by foreign matter inserted into the electronic device from the second hinge mechanism 2 can be avoided, and it can be beneficial to achieve a thin design of the overall thickness of the electronic device.

[0337] In addition, please refer to Fig.28 and Fig.48In the present application, the hinge mechanism may further include an end cap 205, which may be disposed on the side of the second base 206 away from the flexible display screen 6. In one possible embodiment of the present application, the end cap 205 may be an integrally formed structure with the second base 206 to improve the structural reliability of the hinge mechanism and simplify the structure of the hinge mechanism. In some other possible embodiments of the present application, the end cap 205 may also be an independently arranged structure with the second base 206, and the end cap 205 may be fixedly connected to the second base 206, and the connection method may be but is not limited to bonding or threaded connection. In this way, the end cap 205 may serve as an appearance part of the hinge mechanism, which may protect other structures of the hinge mechanism, and is conducive to improving the appearance of the hinge mechanism, thereby improving the appearance of the entire electronic device.

[0338] The above describes in detail some possible design methods of the second rotating shaft mechanism 2 of the electronic device provided in the embodiment of the present application. Based on the design principle of the second rotating shaft mechanism 2, the specific structure of the second rotating shaft mechanism 2 can also be adaptively modified according to practical applications. Fig.53 , Fig.53 This is a schematic diagram of another connection relationship between the second housing 4, the third housing 5 and the second rotating shaft mechanism 2 of the electronic device provided in the embodiment of the present application in a flattened state. Fig.53 In the flattened state shown, the first support plate 202 and the second support plate 203 of the second hinge mechanism 2 can provide flat support for the flexible display screen 6, thereby ensuring the integrity of the electronic device in the flattened state and facilitating improvement of the light and shadow of the flexible display screen 6.

[0339] In addition, refer to Fig.54 , Fig.54 for Fig.53 The structure shown is a schematic diagram of the structure when it is in a closed state. When the second shell 4 and the third shell 5 are in a closed state, the flexible display screen 6 can fit with the two support plates, which can help improve the light and shadow of the flexible display screen. In addition, in the present application, the track grooves of the two support plates can be reasonably designed so that when the second shell 4 and the third shell 5 are in a closed state, a storage space sufficient to accommodate the bent portion of the flexible display screen 6 is formed between the two support plates and the second cover plate 2014, which can avoid the existence of a gap in the electronic device at the second hinge mechanism 2, thereby ensuring that the shape of the electronic device in the closed state is relatively complete. In this way, it can avoid foreign objects from being inserted into the electronic device from the second hinge mechanism 2 to cause damage to the flexible display screen 6, and it can be beneficial to achieve a thinning design of the overall thickness of the electronic device.

[0340] It should be understood that in order to realize the above-mentioned electronic device, in the present application, the design of the second rotating shaft mechanism 2 is not limited to that mentioned in the above embodiment, as long as the second rotating shaft mechanism 2 can realize the following state, that is:

[0341] When the second shell 4 and the third shell 5 are in the flattened state, the support surface 2a of the second hinge mechanism, the support surface 4a of the second shell, and the support surface 5a of the third shell can jointly play the role of flattening the flexible display screen 6. In the process of the second shell 4 and the third shell 5 changing from the flattened state to the closed state, the second shell 4 and the third shell 5 can rotate in opposite directions and drive the flexible display screen 6 to bend. In the process of the second shell 4 and the third shell 5 changing from the closed state to the flattened state, the second shell 4 and the third shell 5 can rotate in opposite directions and drive the flexible display screen 6 to unfold.

[0342] It is understandable that in order for the flexible display screen 6 to realize functions such as display and touch, it may generally include multiple stacked layers, each of which is connected by bonding or the like, and then packaged into a whole by a packaging layer. Since the first shell and the third shell of the electronic device can respectively drive the corresponding parts of the flexible display screen to move during the rotation relative to the second shell, the bending shape of the flexible display screen is generally different when the electronic device is in different folding states. When the flexible display screen is in a bent state, due to the different bending radii of each stacked layer, a certain amount of displacement will occur between the stacked layers, and the folding method and folding state of the electronic device have a great influence on the displacement of each stacked layer of the flexible display screen.

[0343] Next, the states of the various stacked layers of the flexible display screen 6 when the electronic device is in different folding states are analyzed.

[0344] Reference Fig.55a , Fig.55a for Figure 1 Another cross-sectional view of the electronic device at AA is shown. At this time, the electronic device is in a flattened state, and the first housing 3, the first hinge mechanism 1, the second housing 4, the second hinge mechanism 2 and the third housing 5 together form a flat support surface to achieve flat support for the flexible display screen 6.

[0345] In addition, refer to Fig.55b , Fig.55b for Fig.55a The schematic diagram of the stacked structure of the flexible display screen 6 of the electronic device is shown. In the flattened state, the displacement between the layers of the flexible display screen 6 is zero, and the risk of failure of the flexible display screen due to the displacement of the layers is low.

[0346] Reference Fig.56a , Fig.56a for Figure 3The electronic device is in a closed state, the portion of the flexible display screen 6 corresponding to the first shell 3 is located outside the folded portion of the electronic device, and the portion of the flexible display screen 6 corresponding to the second shell 4 and the third shell 5 is located inside the folded portion of the electronic device. Fig.56a It can be seen that in the closed state, the first hinge mechanism 1 can reliably support a bent portion of the flexible display screen 6, and the second hinge mechanism 2 can accommodate the other bent portion of the flexible display screen 6. At this time, the bending shape of the flexible display screen 6 is similar to an "S" shape.

[0347] In addition, refer to Fig.56b , Fig.56b for Fig.56a The schematic diagram of the stacked structure of the flexible display screen 6 of the electronic device shown in FIG. Fig.56b In order to facilitate the explanation of the stacking state of the flexible display screen, the flexible display screen 6 is divided into two parts, wherein the first part 601 shows the shifting of each layer of the flexible display screen 6 under the action of the first shell 3 and the second shell 4, and the second part 602 shows the shifting of each layer of the flexible display screen 6 under the action of the second shell 4 and the third shell 5.

[0348] Depend on Fig.56b It can be seen that when the electronic device is in a closed state, the dislocation trend of the stack of flexible display screen 6 under the action of the first shell 3 and the second shell 4 is consistent with the dislocation trend direction of the stack of flexible display screen 6 under the action of the second shell 4 and the third shell 5, which is beneficial to the balance of the dislocation amount of the stack of flexible display screen 6, thereby reducing the risk of failure of the flexible display screen 6 due to stack dislocation.

[0349] Reference Fig.57a , Fig.57a for Figure 4 2 is a cross-sectional view of the electronic device at GG shown in FIG. In this state, the flexible display screen 6 is completely exposed to the outside of the electronic device, but the portion of the flexible display screen 6 corresponding to the first shell 3 is opposite to the portion of the flexible display screen 6 corresponding to the second shell 4 and the third shell 5. In this state, the deformation of the flexible display screen 6 is mainly affected by the first shell 3 and the second shell 4 in the closed state.

[0350] Reference Fig.57b , Fig.57b for Fig.57a The schematic diagram of the stacking structure of the flexible display screen 6 of the electronic device is shown. In this state, the stacking displacement trend of each part of the flexible display screen 6 is consistent, and the risk of failure of the flexible display screen 6 due to stacking displacement is low.

[0351] Reference Fig.58a , Fig.58afor Figure 5 2 is a cross-sectional view of the electronic device at II shown in FIG. In this state, the portion of the flexible display screen 6 corresponding to the first housing 3 is exposed to the outside of the electronic device, while the portion of the flexible display screen 6 corresponding to the second housing 4 and the third housing 5 is hidden inside the folded portion of the electronic device. In this state, the deformation of the flexible display screen 6 is mainly affected by the second housing 4 and the third housing 5 in the closed state.

[0352] Reference Fig.58b , Fig.58b for Fig.58a The schematic diagram of the stacking structure of the flexible display screen 6 of the electronic device is shown. In this state, the stacking displacement trend of each part of the flexible display screen 6 is consistent, and the risk of failure of the flexible display screen 6 due to stacking displacement is low.

[0353] Reference Fig.59a , Fig.59a for Figure 6 A cross-sectional view of the electronic device at JJ is shown. Fig.59a In the state shown, the first shell 3 and the second shell 4 are in a flattened state, and the third shell 5 is in an intermediate state relative to the second shell 4 . In this state, the deformation of the flexible display screen 6 is also mainly affected by the second shell 4 and the third shell 5 .

[0354] Reference Fig.59b , Fig.59b for Fig.59a The schematic diagram of the stacking structure of the flexible display screen 6 of the electronic device is shown. In this state, the stacking displacement trend of each part of the flexible display screen 6 is consistent, and the risk of failure of the flexible display screen due to stacking displacement is low.

[0355] From the above analysis of the misalignment state of the stacking of the flexible display screen 6 in different folding states of the electronic device provided by the present application, it can be understood that when the electronic device is in a completely closed state, the misalignment of the stacking of the flexible display screen 6 is the largest, but because the flexible display screen 6 is bent in an "S" shape when the electronic device is in the closed state, it is beneficial to balance the misalignment of the stacking at various positions of the flexible display screen 6, thereby reducing the risk of failure of the flexible display screen 6 due to misalignment of the stacking.

[0356] In some existing electronic devices, when the electronic device is in a closed state, the first shell and the third shell are folded on the same side of the second shell, and the third shell is located between the first shell and the second shell. This folding method can be regarded as a "G"-shaped folding. At this time, the flexible display screen is also bent in a "G" shape. The laminated structure of the flexible display screen can refer to Fig.60a .Depend on Fig.60aIt can be seen that the stacking dislocation trend of the portion of the flexible display screen that is deformed by the influence of the first shell and the second shell is opposite to the stacking dislocation trend of the portion of the flexible display screen that is deformed by the influence of the second shell and the third shell. This causes the stacking layer close to the outer side of the fold of the flexible display screen to be over-stretched, while the stacking layer close to the inner side of the fold of the flexible display screen will be wrinkled due to redundancy, which can easily cause the flexible display screen to be damaged due to excessive stacking dislocation.

[0357] In addition, in some existing electronic devices, when the electronic device is in a closed state, its flexible display screen can also be Fig.60b In the folded state shown in FIG. 1 , the first housing 3 and the third housing 5 of the electronic device are also folded on the same side of the second housing 4, but the first housing 3 is located between the second housing 4 and the third housing 5. The flexible display screen also has Fig.60a The same problem as that of the flexible display shown in the figure will not be described in detail here.

[0358] In summary, the electronic device provided in the embodiment of the present application reasonably designs the motion trajectory of the rotating module used to realize the rotation function in the first rotating shaft mechanism and the second rotating shaft mechanism, so as to avoid squeezing or pulling the flexible display screen during the folding process of the electronic device, thereby improving the structural reliability of the flexible display screen, thereby extending the service life of the flexible display screen, and further improving the structural reliability of the entire electronic device.

[0359] The above are only specific implementations of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. An electronic device, characterized in that: The invention comprises a first shell, a second shell, a third shell, a first rotating shaft mechanism and a second rotating shaft mechanism, wherein the first shell and the second shell are rotatably connected through the first rotating shaft mechanism, and the second shell and the third shell are rotatably connected through the second rotating shaft mechanism, wherein: The first rotating shaft mechanism includes a first housing fixing frame, a second housing fixing frame, a main shaft and a first rotating module, wherein the first housing fixing frame and the second housing fixing frame are respectively arranged on opposite sides of the main shaft, the first housing fixing frame is fixedly connected to the first housing, and the second housing fixing frame is fixedly connected to the second housing; the first rotating module includes a first rotating assembly and a second rotating assembly, wherein the first rotating assembly is located between the first housing fixing frame and the second housing fixing frame, and the second rotating assembly is located between the first housing fixing frame and the second housing fixing frame; The first rotating assembly includes a first swing arm, a first support arm and a first connecting member, the first swing arm is rotatably connected to the main shaft, the first swing arm is slidably connected to the first housing fixing frame, the first support arm is rotatably connected to the second housing fixing frame, the first connecting member is located between the first swing arm and the first support arm, the first connecting member is rotatably connected to the first swing arm, and the first connecting member is rotatably connected to the first support arm; the main shaft is provided with a first track groove, the first connecting member can move along the first track groove to limit the movement track of the first connecting member; The second rotating assembly includes a second swing arm, a second support arm and a second connecting member, the second swing arm is rotatably connected to the main shaft, the second swing arm is slidably connected to the second housing fixing frame, the second support arm is rotatably connected to the first housing fixing frame, the second connecting member is located between the second swing arm and the second support arm, the second connecting member is rotatably connected to the second swing arm, and the second connecting member is rotatably connected to the second support arm; the main shaft is provided with a second track groove, the second connecting member can move along the second track groove to limit the movement track of the second connecting member; The second rotating shaft mechanism includes a second base and a second rotating module, the second rotating module includes a third rotating assembly and a fourth rotating assembly, the third rotating assembly and the fourth rotating assembly are located on opposite sides of the second base, the third rotating assembly includes a third supporting arm, a third swing arm and a third housing fixing frame; the fourth rotating assembly includes a fourth supporting arm, a fourth swing arm and a fourth housing fixing frame; The third support arm and the fourth support arm are rotatably connected to the second base respectively, and the third swing arm and the fourth swing arm are rotatably connected to the second base respectively; the rotation axis of the third support arm is parallel to but not coincident with the rotation axis of the third swing arm, and the rotation axis of the fourth support arm is parallel to but not coincident with the rotation axis of the fourth swing arm; The third housing fixing frame is fixedly connected to the second housing, and the third housing fixing frame is provided with a fifth sliding groove extending along the first direction and a sixth sliding groove extending along the second direction, the third support arm can slide in the fifth sliding groove, and the third swing arm can slide in the sixth sliding groove; the projection of the first direction on the first section is not parallel to the projection of the second direction on the first section; wherein the first section is a reference plane perpendicular to the rotation axis of the third support arm and the rotation axis of the third swing arm; The fourth shell fixing frame is fixedly connected to the third shell, and the fourth shell fixing frame is provided with a seventh slide groove extending along the third direction and an eighth slide groove extending along the fourth direction, the fourth support arm can slide in the seventh slide groove, and the fourth swing arm can slide in the eighth slide groove; the projection of the third direction on the second section is not parallel to the projection of the fourth direction on the second section; wherein the second section is a reference plane perpendicular to the rotation axis of the fourth support arm and the rotation axis of the fourth swing arm.

2. The electronic device according to claim 1, wherein: The spindle comprises a first base and a first cover plate, wherein the first base is provided with a first arc-shaped groove and a third arc-shaped groove; the first cover plate is covered on the first base, and the first cover plate comprises a first protrusion arranged toward the first arc-shaped groove and a third protrusion arranged toward the third arc-shaped groove; The gap between the surface of the first protrusion and the groove surface of the first arc-shaped groove serves as the first track groove, the first connecting member includes a first arc-shaped surface and a second arc-shaped surface, and when the first shell and the second shell are in a flattened state and a closed state, the first arc-shaped surface abuts against the surface of the first protrusion, and the second arc-shaped surface abuts against the groove surface of the first arc-shaped groove; The gap between the surface of the third protrusion and the groove surface of the third arcuate groove serves as the second trajectory groove. The second connecting member includes a third arcuate surface and a fourth arcuate surface. When the first shell and the second shell are in a flattened state and a closed state, the third arcuate surface abuts against the surface of the third protrusion, and the fourth arcuate surface abuts against the groove surface of the third arcuate groove.

3. The electronic device according to claim 2, characterized in that: When the first shell and the second shell are in a process of changing from a flattened state to a closed state, the first arc surface abuts against the surface of the first protrusion, and a gap exists between the second arc surface and the groove surface of the first arc groove; when the first shell and the second shell are in a process of changing from a closed state to a flattened state, the second arc surface abuts against the groove surface of the first arc groove, and a gap exists between the first arc surface and the surface of the first protrusion; In the process of the first shell and the second shell changing from a flattened state to a closed state, the third arcuate surface abuts against the surface of the third protrusion, and there is a gap between the fourth arcuate surface and the groove surface of the third arcuate groove; in the process of the first shell and the second shell changing from a closed state to a flattened state, the fourth arcuate surface abuts against the groove surface of the third arcuate groove, and there is a gap between the third arcuate surface and the surface of the third protrusion.

4. The electronic device according to claim 2, characterized in that: The surface of the first protrusion and the groove surface of the first arc-shaped groove are spaced at equal intervals at all locations. In the process of the first shell and the second shell changing from a flattened state to a closed state and from a closed state to a flattened state, the first arc-shaped surface abuts against the surface of the first protrusion, and the second arc-shaped surface abuts against the groove surface of the first arc-shaped groove; the surface of the third protrusion and the groove surface of the third arc-shaped groove are spaced at equal intervals at all locations. In the process of the first shell and the second shell changing from a flattened state to a closed state and from a closed state to a flattened state, the third arc-shaped surface abuts against the surface of the third protrusion, and the fourth arc-shaped surface abuts against the groove surface of the third arc-shaped groove.

5. The electronic device according to claim 2, characterized in that: The first arc surface is an arc surface, the second arc surface is an arc surface, and the sum of the radius of the first arc surface and the radius of the second arc surface is equal to the distance between the surface of the first protrusion and the groove surface of the first arc groove; The third arcuate surface is an arcuate surface, the fourth arcuate surface is an arcuate surface, and the sum of the radius of the third arcuate surface and the radius of the fourth arcuate surface is equal to the distance between the surface of the third protrusion and the groove surface of the third arcuate groove.

6. The electronic device according to any one of claims 1 to 5, characterized in that: The main shaft comprises a first base, the first base is provided with a second arc groove and a fourth arc groove, the first swing arm comprises a first arc rotating block, the first arc rotating block is accommodated in the second arc groove, and the first arc rotating block can slide along the groove surface of the second arc groove to realize the rotation connection between the first swing arm and the main shaft; The second swing arm includes a second arc-shaped rotating block, which is accommodated in the fourth arc-shaped groove, and the second arc-shaped rotating block can slide along the groove surface of the fourth arc-shaped groove to realize the rotation connection between the second swing arm and the main shaft.

7. The electronic device according to claim 6, characterized in that: The main shaft further comprises a first cover plate, the first cover plate is covered on the first base, the first cover plate comprises a second protrusion arranged toward the second arc-shaped groove, and at least a part of the first arc-shaped rotating block is located between the second protrusion and the second arc-shaped groove; The first cover plate further includes a fourth protrusion disposed toward the fourth arc-shaped groove, and at least a portion of the second arc-shaped rotating block is located between the fourth protrusion and the fourth arc-shaped groove.

8. The electronic device according to claim 6, characterized in that: The first connecting member includes a first rotating shaft and a second rotating shaft, the first connecting member and the first swing arm are rotatably connected via the first rotating shaft, the first connecting member and the first supporting arm are rotatably connected via the second rotating shaft, and the axis of the first rotating shaft is parallel to the axis of the second rotating shaft and does not overlap; The second connecting member includes a third rotating shaft and a fourth rotating shaft. The second connecting member and the second swing arm are rotationally connected via the third rotating shaft. The second connecting member and the second support arm are rotationally connected via the fourth rotating shaft. The axis of the third rotating shaft is parallel to and does not overlap with the axis of the fourth rotating shaft.

9. The electronic device according to claim 8, characterized in that: The first arc-shaped rotating block is provided with a first mounting groove, the notch of the first mounting groove is arranged toward the second arc-shaped groove, the first rotating shaft is installed in the first mounting groove, a part of the surface of the first rotating shaft contacts the groove surface of the first mounting groove, and a part of the surface of the first rotating shaft contacts the groove surface of the second arc-shaped groove; The second arc-shaped rotating block is provided with a second mounting groove, the groove opening of the second mounting groove is arranged toward the fourth arc-shaped groove, the third rotating shaft is installed in the second mounting groove, a partial surface of the third rotating shaft contacts the groove surface of the second mounting groove, and a partial surface of the third rotating shaft contacts the groove surface of the fourth arc-shaped groove.

10. The electronic device according to claim 9, characterized in that: The groove surface of the first installation groove includes a first arc surface, the surface of the first rotating shaft for contacting with the groove surface of the first installation groove is a second arc surface, and the center of the first arc surface coincides with the center of the second arc surface; The groove surface of the second installation groove includes a fifth arc surface, the surface of the third rotating shaft for contacting the groove surface of the second installation groove is a sixth arc surface, and the center of the fifth arc surface coincides with the center of the sixth arc surface.

11. The electronic device according to claim 10, characterized in that: The groove surface of the second arc groove is a third arc surface, the surface of the first rotating shaft for contacting the groove surface of the second arc groove is a fourth arc surface, and the center of the third arc surface coincides with the center of the fourth arc surface; The groove surface of the fourth arc groove is the seventh arc surface, the surface of the third rotating shaft for contacting the groove surface of the fourth arc groove is the eighth arc surface, and the center of the seventh arc surface coincides with the center of the eighth arc surface.

12. The electronic device according to any one of claims 1 to 5, characterized in that: The first connecting member includes a plurality of first sub-connecting members that are rotatably connected in sequence; the plurality of first sub-connecting members are located between the first swing arm and the first support arm, the first swing arm is rotatably connected to adjacent first sub-connecting members, and the first support arm is rotatably connected to adjacent first sub-connecting members; The second connecting member includes a plurality of second sub-connecting members that are rotatably connected in sequence; the plurality of second sub-connecting members are located between the second swing arm and the second support arm, the second swing arm is rotatably connected to adjacent second sub-connecting members, and the second support arm is rotatably connected to adjacent second sub-connecting members.

13. The electronic device according to any one of claims 1 to 5, characterized in that: The first rotating shaft mechanism further includes a first synchronous assembly, the first synchronous assembly includes a first gear connecting rod and a second gear connecting rod, the first gear connecting rod includes a first gear and a first connecting rod, the first gear is rotatably connected to the main shaft, and the first connecting rod is slidably connected to the first housing fixing frame; The second gear connecting rod includes a second gear and a second connecting rod, the second gear is rotatably connected to the main shaft, the second connecting rod is slidably connected to the second housing fixing frame, and the first gear is transmission-connected to the second gear.

14. The electronic device according to claim 13, characterized in that: The first gear is rotationally connected to the main shaft via a fifth rotating shaft, and the second gear is rotationally connected to the main shaft via a sixth rotating shaft.

15. The electronic device according to claim 13, characterized in that: The first housing fixing frame is provided with a third slide groove, the first connecting rod is installed in the third slide groove, and can slide in the third slide groove relative to the first housing fixing frame in a direction toward or away from the main axis; The second housing fixing frame is provided with a fourth sliding groove, the second connecting rod is installed in the fourth sliding groove, and can slide in the fourth sliding groove relative to the second housing fixing frame in a direction toward or away from the main axis.

16. The electronic device according to claim 1, wherein: During the movement of the second shell and the third shell between the flattened state and the closed state, the rotation angle of the third support arm and the third swing arm relative to the second base is not greater than 90°; the rotation angle of the fourth support arm and the fourth swing arm relative to the second base is not greater than 90°.

17. The electronic device according to claim 16, characterized in that: The second base is provided with a fifth arc groove and a sixth arc groove, and one end of the third swing arm used for rotationally connecting with the second base is provided with a third arc rotating block, and the third arc rotating block is accommodated in the fifth arc groove and can rotate along the arc surface of the fifth arc groove; A fourth arc-shaped rotating block is disposed at one end of the fourth swing arm for rotationally connecting with the second base. The fourth arc-shaped rotating block is accommodated in the sixth arc-shaped groove and can rotate along the arc-shaped surface of the sixth arc-shaped groove.

18. The electronic device according to claim 1, wherein: The sixth slide groove is provided with a second slideway, the third swing arm is provided with a second slider, the second slider is clamped in the second slideway, and the second slider can slide along the second slideway; The eighth slide groove is provided with a fourth slide track, the fourth swing arm is provided with a fourth slider, the fourth slider is clamped in the fourth slide track, and the fourth slider can slide along the fourth slide track.

19. The electronic device according to claim 18, characterized in that: The third housing fixing frame includes a first surface, the first surface is a side surface of the third housing fixing frame facing the flexible display screen of the electronic device; the second slider is a linear slider, and the second slide is a linear slide; the second slide has an opening located on the first surface, when the second housing and the third housing are in a flattened state, the second slide extends from the opening in a direction away from the first surface, and the second slide extends in a direction close to the second base in a direction from the third housing fixing frame to the fourth housing fixing frame; The fourth shell fixing frame includes a third surface, and the third surface is a side surface of the fourth shell fixing frame facing the flexible display screen of the electronic device; the fourth slider is a linear slider, and the fourth slide is a linear slide; the fourth slide has an opening located on the third surface, and when the second shell and the third shell are in a flattened state, the fourth slide extends from the opening to away from the first surface, and the fourth slide extends in the direction from the fourth shell fixing frame to the third shell fixing frame to the direction close to the second base.

20. The electronic device according to claim 19, characterized in that During the movement of the second shell and the third shell from the flattened state to the closed state, the second slider moves along the second slideway in a direction away from the first surface, and the fourth slider moves along the fourth slideway in a direction away from the third surface; During the process in which the second shell and the third shell move from the closed state to the flattened state, the second slider moves along the second slideway toward the first surface, and the fourth slider moves along the fourth slideway toward the third surface.

21. The electronic device according to claim 18, characterized in that The second slide is an arc-shaped slide; the fourth slide is an arc-shaped slide; when the second shell and the third shell are in a flattened state, the axis of the arc-shaped slide is located on the side of the arc-shaped slide away from the base.

22. The electronic device according to any one of claims 1 to 5, characterized in that: The second rotating module further includes a first driving link and a second driving link, the first driving link is located between the third support arm and the third swing arm; the first driving link includes a first connecting portion and a second connecting portion, and the first connecting portion is rotatably connected to the third support arm through the third connecting rod, and the second connecting portion is rotatably connected to the third swing arm through the fourth connecting rod; the axes of the third connecting rod and the fourth connecting rod do not overlap; The second driving link is located between the fourth support arm and the fourth swing arm, and the second driving link includes a third connecting portion and a fourth connecting portion, and the third connecting portion is rotatably connected to the fourth support arm through a fifth connecting rod, and the fourth connecting portion is rotatably connected to the fourth swing arm through a sixth connecting rod; the axes of the fifth connecting rod and the sixth connecting rod do not overlap.

23. The electronic device according to any one of claims 1 to 5, characterized in that: The second rotating module further includes a first driving link and a second driving link, the first driving link is located between the third support arm and the third swing arm; the first driving link includes a first connecting portion and a second connecting portion, and the first connecting portion is slidably connected to the third swing arm through the third connecting rod, and the second connecting portion is fixedly connected to the third support arm; The second driving link is located between the fourth support arm and the fourth swing arm, and the second driving link includes a third connecting portion and a fourth connecting portion, and the third connecting portion is slidably connected to the fourth swing arm through a fifth connecting rod, and the fourth connecting portion is fixedly connected to the fourth support arm.

24. The electronic device according to claim 23, characterized in that The end of the third swing arm facing the third support arm is provided with a first guide groove, and the third connecting rod is inserted in the first guide groove and can slide along the groove surface of the first guide groove; A second guide groove is arranged at the end of the fourth swing arm facing the fourth support arm, and the fifth connecting rod is inserted in the second guide groove and can slide along the groove surface of the second guide groove.

25. The electronic device according to any one of claims 1 to 5, characterized in that: The second rotating shaft mechanism further includes a first support plate and a second support plate, wherein the first support plate and the second support plate are respectively arranged on both sides of the second base; the first support plate is rotatably connected to the third housing fixing frame, and the first support plate is slidably connected to at least one of the third support arm or the third swing arm; the second support plate is rotatably connected to the fourth housing fixing frame, and the second support plate is slidably connected to at least one of the fourth support arm or the fourth swing arm; When the third shell fixing frame and the fourth shell fixing frame rotate towards each other, the end of the first support plate close to the second base moves in a direction away from the second base, and the end of the second support plate close to the second base moves in a direction away from the second base.

26. The electronic device according to claim 25, characterized in that The third housing fixing frame is provided with a first rotating groove, the first supporting plate is provided with a first rotating part, the first rotating part is installed in the first rotating groove, and the first rotating part can rotate along the groove surface of the first rotating groove; The fourth housing fixing frame is provided with a second rotation groove, the second supporting plate is provided with a second rotation part, the second rotation part is installed in the second rotation groove, and the second rotation part can rotate along the groove surface of the second rotation groove.

27. The electronic device according to claim 25, characterized in that The first support plate is provided with a first guide portion, the first guide portion has a third track groove; the third swing arm is provided with a first guide structure, the first guide structure is inserted in the third track groove and can slide along the third track groove, and / or the third support arm is provided with a first guide structure, the first guide structure is inserted in the third track groove and can slide along the third track groove; The second support plate is provided with a second guide portion, the second guide portion has a fourth track groove; the fourth swing arm is provided with a second guide structure, the second guide structure is inserted in the fourth track groove and can slide along the fourth track groove, and / or the fourth support arm is provided with a second guide structure, the second guide structure is inserted in the fourth track groove and can slide along the fourth track groove.

28. The electronic device according to any one of claims 1 to 5, characterized in that: The electronic device also includes a flexible display screen, which continuously covers the first shell, the first hinge mechanism, the second shell, the second hinge mechanism and the third shell, and the flexible display screen is fixedly connected to the first shell, the second shell and the third shell.

29. The electronic device according to claim 28, characterized in that The axis center of rotation of the first swing arm around the main axis is located on the side of the main axis away from the flexible display screen; the axis center of rotation of the second swing arm around the main axis is located on the side of the main axis away from the flexible display screen.

30. The electronic device according to claim 28, characterized in that When the electronic device is in a closed state, the portion of the flexible display screen corresponding to the first shell is exposed outside the electronic device, and the portions of the flexible display screen corresponding to the second shell and the third shell are hidden inside the electronic device.

Images