Folding mechanism and electronic equipment

Abstract

The invention provides a folding mechanism and electronic equipment. The folding mechanism comprises a main shaft, a first fixing frame, a second fixing frame, a first connecting arm, a second connecting arm and a first bolt; the first connecting arm comprises a first connecting end and a second connecting end, the first connecting end is connected with the main shaft, the second connecting end is connected with the first fixing frame, and the first connecting end is provided with a first slot; the second connecting arm comprises a third connecting end and a fourth connecting end, the third connecting end is connected with the main shaft, and the fourth connecting end is connected with the second fixing frame; the first plug pin is located on the main shaft and movably connected with the main shaft, and the first plug pin can be inserted into the first inserting groove when the folding mechanism is in a flattened state. Therefore, the first connecting arm can not rotate relative to the main shaft any more. The first fixing frame can not rotate relative to the main shaft any more. The main shaft, the first fixing frame and the second fixing frame can be kept at a certain angle such as 180 degrees, and the main shaft, the first fixing frame and the second fixing frame are not prone to being flattened and humpback.

Description

Technical Field

[0001] The present application relates to the field of foldable electronic devices, and in particular to a folding mechanism and electronic devices. Background Art

[0002] With the development of science and technology and the demand of the electronic equipment market, the application of foldable electronic devices is becoming more and more extensive, and users have higher and higher requirements for the overall refinement of foldable electronic devices. Traditional foldable electronic devices include a first shell, a second shell and a folding mechanism. The traditional folding mechanism includes a connecting arm and a damping member. When the electronic device is in a flattened state, the damping member is supported on the connecting arm to keep the first shell and the second shell at a certain angle, such as 180°. However, after the electronic device is folded many times, the damping force decreases due to the wear of the components of the folding mechanism and the spring attenuation of the damping member. The first shell and the second shell will rotate relative to the folding mechanism due to the rewinding force of the flexible screen, causing the electronic device to appear flattened and hunched (or not flat), affecting the overall refinement of the electronic device. Summary of the invention

[0003] The purpose of the present application is to provide a folding mechanism and an electronic device that can be flattened and locked.

[0004] In the first aspect, the present application provides a folding mechanism. The folding mechanism includes a main shaft, a first fixed frame, a second fixed frame, a first connecting arm, a second connecting arm and a first latch, wherein the main shaft is located between the first fixed frame and the second fixed frame; the first connecting arm includes a first connecting end and a second connecting end, wherein the first connecting end is connected to the main shaft, the second connecting end is connected to the first fixed frame, and the first connecting end is provided with a first slot; the second connecting arm includes a third connecting end and a fourth connecting end, wherein the third connecting end is connected to the main shaft, and the fourth connecting end is connected to the second fixed frame; the first latch is located on the main shaft and movably connected to the main shaft, and the first latch is used to be inserted into the first slot when the folding mechanism is in a flattened state.

[0005] It is understandable that by arranging the first latch in the main shaft, when the folding mechanism is in the flattened state, at least a portion of the first plug portion of the first latch can be inserted into the first slot of the first connecting arm. In this way, the first connecting arm can no longer rotate relative to the main shaft. The first fixing frame can also no longer rotate relative to the main shaft. At this time, the main shaft, the first fixing frame and the second fixing frame can be kept at a certain angle, such as 180°, and the main shaft, the first fixing frame and the second fixing frame are not prone to the problem of flattening and hunching.

[0006] In addition, when the folding mechanism is in the flattened state, the first connecting arm is locked from rotating by inserting the first latch into the first slot. The present application provides a folding mechanism that can be stably flattened and locked, thereby improving the stability of the folding mechanism in the flattened state.

[0007] In one possible implementation, a second slot is provided at the third connection end; the folding mechanism includes a second latch, which is located on the main shaft and is spaced apart from the first latch, the second latch is movably connected to the main shaft, and the second latch is used to be inserted into the second slot when the folding mechanism is in a flattened state.

[0008] It is understandable that by arranging the second latch in the main shaft, when the folding mechanism is in the flattened state, at least a portion of the second plug-in portion of the second latch can be inserted into the second slot of the second connecting arm. In this way, the second connecting arm can no longer rotate relative to the main shaft. The second fixing frame can also no longer rotate relative to the main shaft. At this time, the main shaft, the first fixing frame and the second fixing frame can be better maintained at a certain angle, such as 180°. The main shaft, the first fixing frame and the second fixing frame are less likely to have the problem of flattening hunchback.

[0009] In addition, when the folding mechanism is in the flattened state, the second connecting arm is locked from rotating by inserting the second latch into the second slot. The present application provides a folding mechanism that can be stably flattened and locked, thereby improving the stability of the folding mechanism in the flattened state.

[0010] In a possible implementation, the first latch has a first meshing portion, and the second latch has a second meshing portion; the folding mechanism includes a synchronous gear, which is located on the main shaft and rotatably connected to the main shaft, and the second meshing portion meshes with the first meshing portion through the synchronous gear.

[0011] It is understandable that by providing a synchronous gear between the first latch and the second latch, the second latch can be synchronously driven to move by the synchronous gear while the first latch is driven to move. In this way, the implementation can achieve synchronous movement of the first latch and the second latch by a driving force. The first latch and the second latch are respectively inserted into the first connecting arm and the second connecting arm. The structure of the folding mechanism of the implementation is relatively simple, which can reduce the difficulty of assembly and manufacturing cost.

[0012] In a possible implementation, the first latch has a first limiting portion, the second latch has a second limiting portion, a portion of the synchronous gear is located between the first limiting portion and the main shaft, and a portion of the synchronous gear is located between the second limiting portion and the main shaft.

[0013] It can be understood that the synchronization gear is limited in the thickness direction of the main shaft through the cooperation between the main shaft, the first limiting portion of the first latch and the second limiting portion of the second latch. In this way, the first latch and the second latch can not only lock the first connecting arm and the second connecting arm respectively when the folding mechanism is in the flattened state, but also cooperate with the main shaft to limit the synchronization gear in the thickness direction of the main shaft. The first latch and the second latch have the effect of "one object for multiple uses".

[0014] In a possible implementation, the first connection end and the third connection end are arranged along the first direction, the first latch and the second latch are located between the first connection end and the third connection end, and the first latch and the second latch are arranged along the second direction, the first direction is the length extension direction of the main axis, and the second direction intersects with the first direction. In this way, the first connection end of the first connection arm, the third connection end of the second connection arm, the first latch and the second latch are arranged on the main axis more compactly, and the space utilization rate is higher.

[0015] In a possible implementation, the main shaft includes a base and an upper cover, the upper cover is fixed to the base, a portion of the base and a portion of the upper cover enclose a receiving space; the first latch, the second latch and the synchronous gear are all located in the receiving space. In this way, on the one hand, the base and the upper cover can protect the first latch, the second latch and the synchronous gear, and the first latch, the second latch and the synchronous gear are not easy to interfere with the components outside the main shaft. On the other hand, the first latch, the second latch and the synchronous gear are arranged compactly with the main shaft, and the space utilization rate is high.

[0016] In a possible implementation, the upper cover is provided with a first avoidance hole, the first avoidance hole passes through the upper cover, and the first avoidance hole is connected to the accommodation space; the first latch has a pushing portion, a part of which passes through the first avoidance hole from the accommodation space and extends to the outside of the main shaft. In this way, it is convenient for the user to move the pushing portion of the first latch to move the first latch relative to the main shaft.

[0017] In a possible implementation, the folding mechanism also includes a first shielding plate and a second shielding plate, the first shielding plate is fixedly connected to the second connecting end, and the second shielding plate is fixedly connected to the fourth connecting end; when the folding mechanism is in a flattened state, the first shielding plate and the second shielding plate are located on the same side of the first fixing frame, the main shaft and the second fixing frame, and the first shielding plate and the second shielding plate jointly cover the first fixing frame, the main shaft and the second fixing frame; the second shielding plate is provided with a second avoidance hole, and the second avoidance hole is arranged opposite to the first avoidance hole of the upper cover, and the pushing part passes through the second avoidance hole of the second shielding plate and extends to the side of the second shielding plate away from the main shaft.

[0018] It is understandable that when the electronic device is in a flattened state, the first shielding plate is used to shield the gap between the first shell and the main shaft, and the second shielding plate is used to shield the gap between the second shell and the main shaft. Therefore, the folding mechanism can achieve self-shielding in the flattened state by shielding the gap between the first shell and the second shell through the first shielding plate and the second shielding plate, which is conducive to improving the integrity of the appearance and reducing the risk of external dust, debris, etc. entering the internal folding mechanism to ensure the reliability of the electronic device.

[0019] In addition, by passing the pushing portion through the second avoidance hole of the second shielding plate and extending to the side of the second shielding plate away from the main shaft, the user can easily move the pushing portion of the first latch to move the first latch relative to the main shaft.

[0020] In a possible implementation, the folding mechanism also includes a spring sheet, which includes a first straight portion, a bent portion and a second straight portion, the first straight portion and the second straight portion are both fixed to a side of the upper cover facing the accommodating space, and the bent portion protrudes in a direction close to the second latch; the second latch has a convex portion; when the first latch is inserted into the first slot, the convex portion of the second latch is located on a side of the bent portion of the spring sheet close to the third connecting end; when the first latch is separated from the first slot, the convex portion of the second latch is located on a side of the bent portion of the spring sheet away from the third connecting end.

[0021] It can be understood that when the first latch is inserted into the first slot, the protrusion of the second latch can be located on the side of the bent portion of the spring sheet close to the third connection end of the second connecting arm. The bent portion of the spring sheet can be used to block the second latch from moving in a direction away from the second connecting arm, thereby limiting the second plug-in portion of the second latch from being disengaged from the second slot, ensuring that the second connecting arm no longer rotates relative to the main shaft, and improving the connection reliability between the second latch and the second connecting arm. Since the bent portion of the spring sheet can be used to block the second latch from moving in a direction away from the second connecting arm, the second latch will not drive the synchronous gear to rotate. The synchronous gear will not drive the first latch to move in a direction away from the first connecting arm, thereby limiting the first plug-in portion of the first latch from being disengaged from the first slot, thereby ensuring that the first connecting arm no longer rotates relative to the main shaft, and improving the connection reliability between the first latch and the first connecting arm.

[0022] It is understandable that when the first latch is separated from the first slot, the bent portion of the spring can be used to block the second latch from moving in a direction close to the second connecting arm, thereby preventing the second connecting arm from being unable to rotate due to the second plug-in portion of the second latch being inserted into the second slot during the rotation of the second connecting arm, that is, ensuring that the second connecting arm can rotate relative to the main shaft. Since the bent portion of the spring can be used to block the second latch from moving in a direction close to the second connecting arm, the second latch will not drive the synchronous gear to rotate. The synchronous gear will not drive the first latch to move in a direction close to the first connecting arm, thereby preventing the first connecting arm from being unable to rotate due to the plug-in portion of the first latch being inserted into the first slot during the rotation of the first connecting arm, that is, ensuring that the first connecting arm can rotate relative to the main shaft.

[0023] In a possible implementation, the main shaft is provided with a receiving groove, and at least part of the spring piece is located in the receiving groove. It is understandable that in the thickness direction of the main shaft, the spring piece and the upper cover have an overlapping area, which can improve space utilization.

[0024] In a possible implementation, the base has a rotating shaft, the rotating shaft is located in the accommodating space, and the synchronous gear is sleeved on the rotating shaft and rotatably connected to the rotating shaft. It can be understood that, on the one hand, the rotating shaft can provide structural support for the synchronous gear to rotate. On the other hand, by setting the rotating shaft as a part of the base, the structure of the folding mechanism can be simplified.

[0025] In one possible implementation, the base is provided with a first groove, the bottom wall of the first groove is an arc-shaped surface, the bottom surface of the upper cover includes a first arc-shaped surface, the first groove and the first arc-shaped surface form a first arc-shaped groove; the first connecting end is arc-shaped, and the first connecting end is located in the first arc-shaped groove.

[0026] It can be understood that the first connecting end of the first connecting arm is connected to the main shaft through a virtual axis, and the structure of the rotational connection is relatively simple, occupies little space, and is conducive to reducing the thickness of the folding mechanism, making it easier for the folding mechanism and electronic equipment to achieve a lightweight setting.

[0027] In a possible implementation, a first avoidance groove is provided on the bottom wall of the first groove; when the folding mechanism is in a flattened state, the first avoidance groove is arranged opposite to the first insertion slot, and a portion of the first latch pin can be inserted into the first avoidance groove.

[0028] It is understandable that, in the present application, a first avoidance groove is provided in the first arc-shaped groove, so that when the electronic device is in a flattened state, a part of the first plug-in portion of the first latch can be inserted into the first avoidance groove. The first avoidance groove can be used to prevent the first latch from interfering with the bottom wall of the first arc-shaped groove. In addition, the first avoidance groove can also limit the first latch in the width direction of the main shaft to a certain extent, so as to improve the stability of the first latch.

[0029] In one possible implementation, the second connecting end is slidably connected to the first fixed frame; the folding mechanism includes a first bracket and a first elastic member, the first bracket is located on the first fixed frame and is slidably connected to the first fixed frame, and the first bracket is abutted against the second connecting end; the first elastic member is located on the first fixed frame, and one end of the first elastic member is abutted against the first bracket, and the other end is abutted against the first fixed frame, and the first elastic member is used to apply a damping force to the second connecting end through the first bracket.

[0030] It is understandable that by arranging the first bracket and the first elastic member on the first bracket, the first elastic member can apply a damping force to the second connecting end through the first bracket, so that the first connecting arm is less likely to rotate relative to the main shaft without external force, that is, the first connecting arm can be further locked. When the number of folding or flattening of the electronic device is large, the damping force of the first elastic member will decrease, and the resistance and limiting ability of the first connecting arm will be weakened. In addition, when the folding mechanism is applied to the electronic device, the rewinding force of the flexible screen is large after the electronic device is in a folded state for a long time. In this way, when the electronic device is in a flattened state, since the flexible screen has a rewinding force, the flexible screen will overcome the smaller elastic force of the first elastic member to drive the first shell and the second shell to move closer to each other, and the first shell can drive the first fixing frame to rotate relative to the main shaft through the first connecting arm, and the second shell can drive the second fixing frame to rotate relative to the main shaft through the second connecting arm. At this time, when the electronic device is in a flattened state, the first shell and the second shell cannot maintain a preset relative position relationship (for example, the first shell and the second shell are maintained at 180°), that is, the electronic device will have a flattened hunchback (unflattened) phenomenon. For example, there will be a relatively obvious angle between the first shell and the second shell, which may be 150°, 155° or 160°, etc. At this time, by arranging the first latch, the second latch and the synchronous gear in the main shaft, when the electronic device is in a flattened state, the first latch can be inserted into the first slot of the first connecting arm, and the second latch can be inserted into the second slot of the second connecting arm. At this time, even if the flexible screen applies a force to the first shell and the second shell to move closer to each other, the first connecting arm and the second connecting arm no longer rotate relative to the main shaft, the first fixing frame and the second fixing frame no longer rotate relative to the main shaft, and the first shell and the second shell no longer rotate relative to the main shaft. At this time, the first shell and the second shell can be maintained in a preset relative position (for example, the first shell and the second shell are maintained at 180°). When the electronic device is in a flattened state, the electronic device is more beautiful.

[0031] It is understandable that if the folding mechanism includes a first bracket and a first elastic member, the user can choose whether to insert the first latch into the first slot when the electronic device is in a flattened state. For example, when the number of folding or flattening of the electronic device is small, since the damping force of the first elastic member is normal, the first elastic member can normally apply the damping force to the second connecting end through the first bracket. At this time, the first bracket and the first elastic member can lock the rotation of the first connecting arm, and the user does not need to insert the first latch into the first slot when the electronic device is in a flattened state. When the number of folding or flattening of the electronic device is large, since the damping force of the first elastic member fails, the first elastic member cannot normally apply the damping force to the second connecting end through the first bracket. At this time, the first bracket and the first elastic member cannot lock the rotation of the first connecting arm, and the user can insert the first latch into the first slot when the electronic device is in a flattened state.

[0032] In one possible implementation, the first bracket includes a first supporting block and a plurality of fixed columns, wherein the plurality of first fixed columns are fixed at intervals on one side of the first supporting block, and the first supporting block is supported on the second connecting end; the first elastic member includes a plurality of springs, and the plurality of springs are correspondingly mounted on the plurality of first fixed columns.

[0033] In a second aspect, the present application provides an electronic device. The electronic device includes a first housing, a second housing, a flexible screen, and a folding mechanism according to any one of claims 1 to 3, wherein the first fixing frame is fixedly connected to the first housing, and the second fixing frame is fixedly connected to the second housing; the flexible screen includes a first display area, a second display area, and a third display area connected in sequence, the first display area is fixed to the first housing, and the third display area is fixed to the second housing.

[0034] It is understandable that by arranging the first latch in the main shaft, when the electronic device is in a flattened state, at least a portion of the first plug-in portion of the first latch can be inserted into the first slot of the first connecting arm. In this way, the first connecting arm can no longer rotate relative to the main shaft. The first fixing frame can also no longer rotate relative to the main shaft. At this time, the main shaft, the first fixing frame and the second fixing frame can be maintained at a certain angle, such as 180°, that is, the main shaft, the first shell and the second shell can be maintained at a certain angle, such as 180°. In this way, the main shaft, the first shell and the second shell are not prone to the problem of flattening and hunching.

[0035] In addition, when the electronic device is in a flattened state, the first connecting arm is locked from rotating by inserting the first latch into the first slot. The present application provides a folding mechanism and an electronic device that can be stably flattened and locked, thereby improving the stability of the electronic device in a flattened state.

[0036] In a third aspect, the present application provides an electronic device. The electronic device includes a folding mechanism, a first shell and a second shell, the folding mechanism connects the first shell and the second shell, and the folding mechanism is used to make the first shell and the second shell relatively unfold and close; the folding mechanism includes a main shaft, a first connecting arm and a first latch; the first connecting arm includes a first connecting end and a second connecting end, the first connecting end is connected to the main shaft, the second connecting end is connected to the first shell, and the first connecting end is provided with a first slot; the first latch is located on the main shaft and movably connected to the main shaft, and the first latch is used to be inserted into the first slot when the electronic device is in a flattened state.

[0037] It is understandable that by arranging the first latch in the main shaft, when the electronic device is in a flattened state, at least a portion of the first plug-in portion of the first latch can be inserted into the first slot of the first connecting arm. In this way, the first connecting arm can no longer rotate relative to the main shaft. The first fixing frame can also no longer rotate relative to the main shaft. At this time, the main shaft, the first fixing frame and the second fixing frame can be maintained at a certain angle, such as 180°, that is, the main shaft, the first shell and the second shell can be maintained at a certain angle, such as 180°. In this way, the main shaft, the first shell and the second shell are not prone to the problem of flattening and hunching.

[0038] In addition, when the electronic device is in a flattened state, the first connecting arm is locked from rotating by inserting the first latch into the first slot. The present application provides a folding mechanism and an electronic device that can be stably flattened and locked, thereby improving the stability of the electronic device in a flattened state.

[0039] In one possible implementation, the folding mechanism includes a second connecting arm and a second latch; the second connecting arm includes a third connecting end and a fourth connecting end, the third connecting end is connected to the main shaft, the fourth connecting end is connected to the second shell, and the third connecting end is provided with a second slot; the second latch is located on the main shaft and is spaced apart from the first latch, the second latch is movably connected to the main shaft, and the second latch is used to be inserted into the second slot when the electronic device is in a flattened state.

[0040] It is understandable that by arranging the second latch in the main shaft, the second latch can be inserted into the second slot of the second connecting arm when the electronic device is in a flattened state. In this way, the second connecting arm can no longer rotate relative to the main shaft. The second fixing frame can also no longer rotate relative to the main shaft. At this time, the main shaft, the first fixing frame and the second fixing frame can be better maintained at a certain angle, such as 180°, that is, the main shaft, the second shell and the second shell can be better maintained at a certain angle, such as 180°. The main shaft, the second shell and the second shell are less likely to have the problem of flattening hunchback.

[0041] In addition, when the electronic device is in a flattened state, the second connecting arm is locked from rotating by inserting the second latch into the second slot. The present application provides a folding mechanism and an electronic device that can be stably flattened and locked, thereby improving the stability of the electronic device in a flattened state.

[0042] In a possible implementation, the first latch has a first meshing portion, and the second latch has a second meshing portion; the folding mechanism includes a synchronous gear, which is located on the main shaft and rotatably connected to the main shaft, and the second meshing portion meshes with the first meshing portion through the synchronous gear.

[0043] It is understandable that by providing a synchronous gear between the first latch and the second latch, the second latch can be synchronously driven to move by the synchronous gear while the first latch is driven to move. In this way, the implementation can achieve synchronous movement of the first latch and the second latch by a driving force. The first latch and the second latch are respectively inserted into the first connecting arm and the second connecting arm. The structure of the folding mechanism of the implementation is relatively simple, which can reduce the difficulty of assembly and manufacturing cost.

[0044] In a possible implementation, the first latch has a first limiting portion, the second latch has a second limiting portion, a portion of the synchronous gear is located between the first limiting portion and the main shaft, and a portion of the synchronous gear is located between the second limiting portion and the main shaft.

[0045] It can be understood that the synchronization gear is limited in the thickness direction of the main shaft through the cooperation between the main shaft, the first limiting portion of the first latch and the second limiting portion of the second latch. In this way, the first latch and the second latch can not only lock the first connecting arm and the second connecting arm respectively when the folding mechanism is in the flattened state, but also cooperate with the main shaft to limit the synchronization gear in the thickness direction of the main shaft. The first latch and the second latch have the effect of "one object for multiple uses".

[0046] In a possible implementation, the first connection end and the third connection end are arranged along the first direction, the first latch and the second latch are located between the first connection end and the third connection end, and the first latch and the second latch are arranged along the second direction, the first direction is the length extension direction of the main axis, and the second direction intersects with the first direction. In this way, the first connection end of the first connection arm, the third connection end of the second connection arm, the first latch and the second latch are arranged on the main axis more compactly, and the space utilization rate is higher.

[0047] In a possible implementation, the folding mechanism also includes a spring sheet, which includes a first straight portion, a bent portion and a second straight portion, the first straight portion and the second straight portion are both fixed to a side of the upper cover facing the accommodating space, and the bent portion protrudes in a direction close to the second latch; the second latch has a convex portion; when the first latch is inserted into the first slot, the convex portion of the second latch is located on a side of the bent portion of the spring sheet close to the third connecting end; when the first latch is separated from the first slot, the convex portion of the second latch is located on a side of the bent portion of the spring sheet away from the third connecting end.

[0048] It is understandable that when the first latch is separated from the first slot, the bent portion of the spring can be used to block the second latch from moving in a direction close to the second connecting arm, thereby preventing the second connecting arm from being unable to rotate due to the second plug-in portion of the second latch being inserted into the second slot during the rotation of the second connecting arm, that is, ensuring that the second connecting arm can rotate relative to the main shaft. Since the bent portion of the spring can be used to block the second latch from moving in a direction close to the second connecting arm, the second latch will not drive the synchronous gear to rotate. The synchronous gear will not drive the first latch to move in a direction close to the first connecting arm, thereby preventing the first connecting arm from being unable to rotate due to the plug-in portion of the first latch being inserted into the first slot during the rotation of the first connecting arm, that is, ensuring that the first connecting arm can rotate relative to the main shaft.

[0049] It is understandable that when the first latch is inserted into the first slot, the protrusion of the second latch can be located on the side of the bent portion of the spring sheet close to the third connection end of the second connecting arm. The bent portion of the spring sheet can be used to block the second latch from moving in a direction away from the second connecting arm, thereby limiting the second plug-in portion of the second latch from being disengaged from the second slot, ensuring that the second connecting arm no longer rotates relative to the main shaft, and improving the connection reliability between the second latch and the second connecting arm. It is understandable that, since the bent portion of the spring sheet can be used to block the second latch from moving in a direction away from the second connecting arm, the second latch will not drive the synchronous gear to rotate. The synchronous gear will not drive the first latch to move in a direction away from the first connecting arm, thereby limiting the first plug-in portion of the first latch from being disengaged from the first slot, thereby ensuring that the first connecting arm no longer rotates relative to the main shaft, and improving the connection reliability between the first latch and the first connecting arm.

[0050] In one possible implementation, the second connecting end is slidably connected to the first fixed frame; the folding mechanism includes a first bracket and a first elastic member, the first bracket is located on the first fixed frame and is slidably connected to the first fixed frame, and the first bracket is abutted against the second connecting end; the first elastic member is located on the first fixed frame, and one end of the first elastic member is abutted against the first bracket, and the other end is abutted against the first fixed frame, and the first elastic member is used to apply a damping force to the second connecting end through the first bracket.

[0051] It is understandable that by arranging the first bracket and the first elastic member on the first bracket, the first elastic member can apply a damping force to the second connecting end through the first bracket, so that the first connecting arm is less likely to rotate relative to the main shaft without external force, that is, the first connecting arm is further locked. In this embodiment, when the number of folding or flattening of the electronic device is large, the damping force of the first elastic member will decrease, and the resistance and limiting ability of the first connecting arm will be weakened. In addition, when the folding mechanism is applied to the electronic device, the rewinding force of the flexible screen is large after the electronic device is in a folded state for a long time. In this way, when the electronic device is in a flattened state, since the flexible screen has a rewinding force, the flexible screen will overcome the smaller elastic force of the first elastic member to drive the first shell and the second shell to move closer to each other, and the first shell can drive the first fixing frame to rotate relative to the main shaft through the first connecting arm, and the second shell can drive the second fixing frame to rotate relative to the main shaft through the second connecting arm. At this time, when the electronic device is in a flattened state, the first shell and the second shell cannot maintain a preset relative position relationship (for example, the first shell and the second shell are maintained at 180°), that is, the electronic device will have a flattened hunchback (unflattened) phenomenon. For example, there will be a relatively obvious angle between the first shell and the second shell, which may be 150°, 155° or 160°, etc. At this time, by arranging the first latch, the second latch and the synchronous gear in the main shaft, when the electronic device is in a flattened state, the first latch can be inserted into the first slot of the first connecting arm, and the second latch can be inserted into the second slot of the second connecting arm. At this time, even if the flexible screen applies a force to the first shell and the second shell to move closer to each other, the first connecting arm and the second connecting arm no longer rotate relative to the main shaft, the first fixing frame and the second fixing frame no longer rotate relative to the main shaft, and the first shell and the second shell no longer rotate relative to the main shaft. At this time, the first shell and the second shell can be maintained in a preset relative position (for example, the first shell and the second shell are maintained at 180°). When the electronic device is in a flattened state, the electronic device is more beautiful.

[0052] It is understandable that if the folding mechanism includes a first bracket and a first elastic member, the user can choose whether to insert the first latch into the first slot when the electronic device is in a flattened state. For example, when the number of folding or flattening of the electronic device is small, since the damping force of the first elastic member is normal, the first elastic member can normally apply the damping force to the second connecting end through the first bracket. At this time, the first bracket and the first elastic member can lock the rotation of the first connecting arm, and the user does not need to insert the first latch into the first slot when the electronic device is in a flattened state. When the number of folding or flattening of the electronic device is large, since the damping force of the first elastic member fails, the first elastic member cannot normally apply the damping force to the second connecting end through the first bracket. At this time, the first bracket and the first elastic member cannot lock the rotation of the first connecting arm, and the user can insert the first latch into the first slot when the electronic device is in a flattened state. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] In order to illustrate the technical solutions in the embodiments of the present application or the background technology, the drawings required for use in the embodiments of the present application or the background technology will be described below.

[0054] Figure 1 is a schematic structural diagram of an electronic device provided in an embodiment of the present application in a flattened state;

[0055] Figure 2 yes Figure 1 A partial cross-sectional schematic diagram of an embodiment of the electronic device shown at line AA;

[0056] Figure 3 yes Figure 1 A schematic structural diagram of an implementation method of an electronic device in a closed state;

[0057] Figure 4 yes Figure 3 A partial cross-sectional schematic diagram of an embodiment of the electronic device shown at line BB;

[0058] Figure 5 yes Figure 1 A partially exploded view of the electronic device shown in one embodiment;

[0059] Figure 6 yes Figure 1 The structural schematic diagram of the folding mechanism shown is at another angle;

[0060] Figure 7 yes Figure 6 A partially exploded view of the folding mechanism shown in one embodiment;

[0061] Figure 8 yes Figure 7 A partially exploded view of the folding mechanism shown in one embodiment;

[0062] Fig. 9 yes Figure 8 A partially exploded view of the folding mechanism shown in one embodiment;

[0063] Fig.10 yes Fig. 9 An enlarged schematic diagram of the middle portion of the base in one embodiment is shown;

[0064] Fig.11 yes Fig. 9 A schematic diagram of the structure of the upper cover at another angle;

[0065] Fig.12 yes Figure 8 The folding mechanism shown in FIG. Figure 1;

[0066] Fig.13 yes Fig.12 A partial cross-sectional schematic diagram of an embodiment of the main shaft at the CC line;

[0067] Fig.14 yes Fig.12 A partial cross-sectional schematic diagram of an embodiment of the main shaft at line DD shown;

[0068] Fig.15 yes Fig.12 A partial cross-sectional schematic diagram of an embodiment of the main shaft at line EE is shown;

[0069] Fig.16 yes Figure 8 A partially exploded view of a central connection assembly in one embodiment;

[0070] Fig.17 yes Fig.16 A partial structural schematic diagram of a middle connection assembly in one embodiment is shown;

[0071] Fig.18 yes Fig.16 A schematic structural diagram of a first connecting arm and a second connecting arm in one embodiment is shown;

[0072] Fig.19 yes Figure 8 The folding mechanism shown in FIG. Figure 2 ;

[0073] Fig. 20 yes Figure 8 The folding mechanism shown in FIG. Figure 3 ;

[0074] Fig.21 yes Fig. 20 A partial cross-sectional schematic diagram of an embodiment of the folding mechanism shown at line FF;

[0075] Fig. 22 yes Fig.21 A partial cross-sectional view of the folding mechanism shown in the folded state;

[0076] Fig.23 yes Fig. 22 A partial cross-sectional view of an embodiment of the folding mechanism shown at line GG;

[0077] Fig.24 yes Fig.16 The schematic diagram of the structure of the first latch at different angles in one embodiment is shown;

[0078] Fig.25 yes Figure 8 The folding mechanism shown in FIG. Figure 4 ;

[0079] Fig.26 yes Figure 8 The folding mechanism shown in FIG. Figure 5 ;

[0080] Fig. 27 yes Fig.25 A schematic diagram of a portion of the structure of the electronic device shown in a locked state;

[0081] Fig.28 yes Fig.16 A schematic diagram of the structure of the second latch in another angle of one embodiment is shown;

[0082] Fig.29 yes Figure 8 The folding mechanism shown in FIG. Figure 6 ;

[0083] Fig.30 yes Fig.29 A schematic structural diagram of a folding mechanism in one embodiment is shown;

[0084] Fig.31 yes Figure 8 A schematic diagram of a partial structure of the folding mechanism shown in another angle of one embodiment;

[0085] Fig.32 yes Figure 8 The folding mechanism shown in FIG. Figure 7 ;

[0086] Fig.33 yes Fig.32 A schematic structural diagram of a folding mechanism in one embodiment is shown;

[0087] Fig.34 yes Fig.16 A partially exploded view of a first damping member and a second damping member in one embodiment is shown;

[0088] Fig.35 yes Fig.16 An enlarged view of the first damping member, the second damping member, the third damping member and the fourth damping member;

[0089] Fig.36 yes Figure 8 The folding mechanism shown in FIG. Figure 8 ;

[0090] Fig.37 yes Figure 6An exploded view of the electronic device shown in another angle of one embodiment;

[0091] Fig.38 yes Fig.37 A schematic diagram of the structure of the electronic device shown in a folded state;

[0092] Fig.39 yes Figure 6 A schematic diagram of a partial structure of an electronic device at another angle in one embodiment is shown. DETAILED DESCRIPTION

[0093] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application.

[0094] In the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "install", "connect", "connect", and "connect" should be understood in a broad sense. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be an electrical connection or a mechanical connection. Among them, "fixed connection" means that the two are connected to each other and the relative position relationship remains unchanged after the connection. "Rotational connection" means that the two are connected to each other and can rotate relative to each other after the connection. "Sliding connection" means that the two components are connected to each other and can slide relative to each other after the connection. In addition, the two components are integrated into an integrated structure through an integrated molding process, which means that in the process of forming one of the two components, the component is connected to the other component, and there is no need to connect the two components together through further processing (such as bonding, welding, snap connection, screw connection).

[0095] The directional terms mentioned in the embodiments of the present application, such as "top", "bottom", "inside", "outside", etc., are only referenced to the directions of the drawings. Therefore, the directional terms used are for better and clearer description and understanding of the embodiments of the present application, rather than indicating or implying that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the embodiments of the present application. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0096] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0097] Figure 1 It is a schematic structural diagram of the electronic device 1000 provided in an embodiment of the present application in a flattened state. Figure 2 yes Figure 1 The illustrated electronic device 1000 is a partial cross-sectional schematic diagram of an embodiment of the electronic device 1000 at line AA. Figure 3 yes Figure 1 The structure diagram of an implementation example of an electronic device 1000 shown is in a closed state. Figure 4 yes Figure 3 The illustrated electronic device 1000 is a partial cross-sectional schematic diagram of an embodiment of the electronic device 1000 at line BB.

[0098] like Figures 1 to 4 As shown, the present application provides a foldable electronic device 1000. The foldable electronic device 1000 may be a foldable device such as a mobile phone, a tablet computer, a personal computer, a laptop computer, a vehicle-mounted device, or a wearable device (such as a smart bracelet). The present application embodiment takes the electronic device 1000 as a mobile phone as an example for detailed description.

[0099] For ease of description, illustratively, the thickness direction of the electronic device 1000 is defined as the Z-axis direction, and the extension direction of the rotation axis of the electronic device 1000 is the Y-axis direction, that is, the width direction of the electronic device 1000 is the Y-axis direction. The direction perpendicular to the Y-axis direction and the Z-axis direction is the X-axis direction, that is, the length direction of the electronic device 1000 is the X-axis. It can be understood that the coordinate system of the electronic device 1000 can also be flexibly set according to specific needs. Exemplarily, the Y-axis direction is defined as the first direction, the X-axis direction is defined as the second direction, and the Z-axis direction is defined as the third direction. In other embodiments, the first direction, the second direction, and the third direction can also be flexibly set according to needs, ensuring that the first direction, the second direction, and the third direction intersect with each other.

[0100] It can be understood that, in this embodiment, the direction of the rotation axis of the electronic device 1000 is the Y-axis direction, that is, the electronic device 1000 can be relatively flattened or folded along the Y-axis direction. In this way, when the electronic device 1000 is in a folded state, the size of the electronic device 1000 in the X-axis direction becomes smaller. This embodiment is explained by taking "the direction of the rotation axis of the electronic device 1000 is the Y-axis direction" as an example. At this time, the electronic device 1000 can be folded left and right, and the folding and flattening of the electronic device 1000 affects the length size of the electronic device 1000. In some other embodiments, the rotation axis of the electronic device 1000 can also be the X-axis direction, that is, the electronic device 1000 can be relatively flattened or folded along the X-axis direction. At this time, the electronic device 1000 can be folded up and down, and the folding and flattening of the electronic device 1000 affects the width size of the electronic device 1000.

[0101] Figure 5 yes Figure 1 A partially exploded view of electronic device 1000 is shown in one embodiment. Figure 6 yes Figure 1 The illustrated diagram is a partial structural diagram of an electronic device 1000 in one embodiment.

[0102] like Figure 5 and Figure 6 As shown, the electronic device 1000 includes a folding mechanism 100, a flexible screen 200, a first shell 300 and a second shell 400. Among them, the flexible screen 200 can be an organic light-emitting diode (OLED) display screen, an active matrix organic light-emitting diode or an active matrix organic light-emitting diode (AMOLED) display screen, a mini organic light-emitting diode (mini organic light-emitting diode) display screen, a micro organic light-emitting diode (micro organic light-emitting diode) display screen or a quantum dot light-emitting diode (quantum dot light emitting diodes, QLED) display screen, etc. In addition, the folding mechanism 100 can be an external folding mechanism or an internal folding mechanism. The external folding mechanism refers to a folding mechanism that can fold at least part of the flexible screen 200 to the outside of the shell. The internal folding mechanism refers to a folding mechanism that can fold at least part of the flexible screen 200 between two shells. The present application does not limit the specific structure of the folding mechanism 100. In this embodiment, the folding mechanism 100 is described as an external folding mechanism.

[0103] like Figure 5and Figure 6 As shown, exemplarily, the folding mechanism 100 is connected between the first housing 300 and the second housing 400. The folding mechanism 100 is used to make the first housing 300 and the second housing 400 relatively unfold or fold.

[0104] like Figure 1 and Figure 2 As shown, when the first shell 300 and the second shell 400 are relatively unfolded to a flattened state, the electronic device 1000 is in a flattened state, and the first shell 300 and the second shell 400 can be 180 degrees. In other embodiments, the first shell 300 and the second shell 400 can also have a slight deviation from 180 degrees, such as 165 degrees, 177 degrees or 185 degrees.

[0105] like Figure 3 and Figure 4 As shown, when the first shell 300 and the second shell 400 are folded relative to each other to a closed state, the electronic device 1000 is in a folded state, the first shell 300 and the second shell 400 can be closed together, and there may be no large gap between the first shell 300 and the second shell 400. In this way, the appearance experience of the electronic device 1000 is better, and the waterproof, dustproof and foreign body-proof performance is better. The situation where the first shell 300 and the second shell 400 are closed includes the situation where the two are against each other, and may also include the situation where there is a small gap between the two. When there is a small gap between the first shell 300 and the second shell 400, some foreign matter outside the electronic device 1000 will not enter between the first shell 300 and the second shell 400 through the gap.

[0106] The first shell 300 and the second shell 400 can also be relatively unfolded or folded to an intermediate state, so that the electronic device 1000 is in an intermediate state, and the intermediate state can be any state between the unfolded state and the closed state.

[0107] See also Figure 5 , and combined with Figures 1 to 4 As shown, the flexible screen 200 includes a first display area 201, a second display area 202 and a third display area 203. The second display area 202 is connected between the first display area 201 and the third display area 203. Figure 1 , Figure 2 and Figure 5The first display area 201, the second display area 202 and the third display area 203 are simply schematically distinguished by dotted lines. The first display area 201 of the flexible screen 200 is fixedly connected to the first shell 300. The third display area 203 is fixedly connected to the second shell 400. In the process of relative expansion or folding of the first shell 300 and the second shell 400, the first shell 300 can drive the first display area 201 to move, the second shell 400 can drive the third display area 203 to move, the first display area 201 and the third display area 203 are relatively expanded or folded, and the second display area 202 can be deformed.

[0108] It can be understood that since the first display area 201 is fixedly connected to the first shell 300 and the third display area 203 is fixedly connected to the second shell 400, when the first shell 300 and the second shell 400 are relatively unfolded or folded, the relative unfolding and folding movements between the first display area 201 and the third display area 203 can be accurately controlled, so that the folding process and movement form of the flexible screen 200 are controllable and the reliability is high.

[0109] like Figure 1 and Figure 2 As shown, when the electronic device 1000 is in a flattened state, the flexible screen 200 can be in a flattened state. Exemplarily, the first display area 201, the second display area 202, and the third display area 203 of the flexible screen 200 can be 180°. In other embodiments, the first display area 201, the second display area 202, and the third display area 203 can also have a slight deviation from 180°, such as 165°, 177°, or 185°. At this time, the flexible screen 200 has a continuous large display area, that is, the flexible screen 200 can achieve large-screen display, and the user experience is better.

[0110] For example, when the electronic device 1000 is in a flattened state, at least part of the folding mechanism 100 can be used to support the second display area 202. In this way, when the second display area 202 is subjected to pressing force, squeezing force or impact force, the folding mechanism 100 can be used to improve the pressure resistance and impact resistance of the second display area 202, that is, to ensure that the second display area 202 is not prone to dents and other problems.

[0111] like Figure 3 and Figure 4As shown, when the electronic device 1000 is in a folded state, the flexible screen 200 is in a folded state. Exemplarily, the first display area 201 and the third display area 203 of the flexible screen 200 are close to each other. The second display area 202 is bent. At this time, the flexible screen 200 can be roughly U-shaped. In addition, the flexible screen 200 is located outside the first shell 300, the folding mechanism 100 and the second shell 400. The first shell 300 and the second shell 400 are located between the first display area 201 and the third display area 203. At this time, the plane size of the electronic device 1000 is small (with a small width dimension), which is convenient for users to carry and store.

[0112] Figure 7 yes Figure 6 The folding mechanism 100 is shown in a partially exploded view in one embodiment. Figure 8 yes Figure 7 A partially exploded view of the folding mechanism 100 in one embodiment is shown.

[0113] See also Figure 7 and Figure 8 , and combined with Figure 5 and Figure 6 As shown, the folding mechanism 100 comprises a main shaft 1, a middle connecting assembly 2, an end connecting assembly 3, a first shielding plate 4a and a second shielding plate 4b. The main shaft 1 extends in the Y-axis direction.

[0114] Exemplarily, the spindle 1 is located between the first housing 300 and the second housing 400. The middle connecting assembly 2 connects the first housing 300, the spindle 1 and the second housing 400. The end connecting assembly 3 connects the first housing 300, the spindle 1 and the second housing 400. There are two end connecting assemblies 3, and the two end connecting assemblies 3 are arranged at intervals in the axial direction of the spindle 1, for example, they can be connected to the top and bottom of the spindle 1 respectively. The two end connecting assemblies 3 are located on both sides of the middle connecting assembly 2, that is, the middle connecting assembly 2 is located between the two end connecting assemblies 3.

[0115] It can be understood that, through the cooperation between the end connection assembly 3 and the middle connection assembly 2, the first shell 300 and the second shell 400 can be relatively unfolded or folded. Exemplarily, the end connection assembly 3 is used to mainly unfold or fold the first shell 300 and the second shell 400. The middle connection assembly 2 is used to assist the end connection assembly 3 so that the first shell 300 and the second shell 400 are relatively unfolded or folded. The specific structure of the end connection assembly 3 is not specifically limited in this application.

[0116] Exemplarily, the first shielding plate 4a and the second shielding plate 4b are respectively connected to the two sides of the main shaft 1. When the electronic device 1000 is in a flattened state, the first shielding plate 4a is used to shield the gap between the first shell 300 and the main shaft 1, and the second shielding plate 4b is used to shield the gap between the second shell 400 and the main shaft 1. Therefore, the folding mechanism 100 can shield the gap between the first shell 300 and the second shell 400 by the first shielding plate 4a and the second shielding plate 4b in the flattened state, thereby achieving self-shielding, which is beneficial to improving the integrity of the appearance, and can also reduce the risk of external dust, debris, etc. entering the folding mechanism 100, so as to ensure the reliability of the electronic device 1000. In some embodiments, the rotation center of the folding mechanism 100 as a whole is parallel to the axial direction of the main shaft 1, and the main shaft 1 extends along its axial direction.

[0117] like Figure 8 As shown, the structures of the two end connection components 3 are mirror-symmetrical. At this time, since the structures of the two end connection components 3 are the same, the overall structure of the folding mechanism 100 is relatively simple and the processing cost is low. Since the two end connection components 3 are arranged in a mirror-symmetrical manner, during the rotation of the folding mechanism 100, the stress between the two end connection components 3 and the main shaft 1, the first shell 300 and the second shell 400 is relatively uniform, which is beneficial to improve the reliability of the folding mechanism 100. In some other embodiments, the structures of the two end connection components 3 may also be different. In some other embodiments, the embodiment of the present application may also only provide one end connection component 3, which is located at one end of the folding mechanism 100. It can be understood that the structure of the folding mechanism 100 can have a variety of combinations and deformation methods, and the embodiment of the present application does not strictly limit this.

[0118] Fig. 9 yes Figure 8 A partially exploded view of the folding mechanism 100 is shown in one embodiment.

[0119] like Figure 8 and Fig. 9 As shown, in some embodiments, the main shaft 1 includes a base 11 and an upper cover 12 .

[0120] The base 11 is an integrally formed structure. The base 11 includes a first end 11a, a middle portion 11b, and a second end 11c which are connected in sequence. The first end 11a and the second end 11c of the base 11 can be used to connect the two end connection components 3 respectively. The middle portion 11b of the base 11 can be used to connect the middle connection component 2. It can be understood that in order to clearly and conveniently describe the specific structure of the base 11, Fig. 9 The first end portion 11 a , the middle portion 11 b , and the second end portion 11 c are schematically distinguished by a dotted-line frame.

[0121] It is understandable that the first end 11a of the base 11 and the second end 11c of the base 11 may be of the same or similar structure, a symmetrical or partially symmetrical structure, or a different structure. Exemplarily, the first end 11a of the base 11 and the second end 11c of the base 11 are symmetrical structures. The structure of the first end 11a and the second end 11c of the base 11 may be determined according to the structure of the end connection assembly 3. This application does not specifically limit this.

[0122] like Fig. 9 As shown, the base 11 includes a front side 11d and a back side 11e. The back side 11e of the base 11 is connected to the front side 11d of the base 11. The front side 11d of the base 11 is the surface of the base 11 facing the flexible screen 200. The back side 11e of the base 11 is the surface of the base 11 facing away from the flexible screen 200.

[0123] Fig.10 yes Fig. 9 The middle portion 11 b of the base 11 is shown as an enlarged schematic diagram in one embodiment.

[0124] like Fig.10 As shown, the middle portion 11 b of the base 11 is provided with a first groove 111 a , a second groove 111 b and a receiving groove 112 .

[0125] Exemplarily, the first groove 111a and the second groove 111b may both penetrate the back side 11e of the base 11. The bottom walls of the first groove 111a and the second groove 111b may be arcuate surfaces, that is, the first groove 111a and the second groove 111b both include arcuate bottom walls. It is understandable that the first groove 111a penetrating the back side 11e of the base 11 may be that the first groove 111a forms an opening on the back side 11e of the base 11. If any related description appears below, please refer to the definition here. The specific description will not be repeated below.

[0126] For example, the receiving groove 112 may be located between the first groove 111a and the second groove 111b, and communicate with the first groove 111a and the second groove 111b. The receiving groove 112 may penetrate the back surface 11e of the base 11.

[0127] Exemplarily, the middle portion 11 b of the base 11 is further provided with a first avoidance groove 113 . The first avoidance groove 113 is located in the first groove 111 a . The first avoidance groove 113 forms an opening at the bottom wall of the first groove 111 a , and the first avoidance groove 113 is connected to the accommodation groove 112 .

[0128] Exemplarily, the middle portion 11 b of the base 11 is further provided with a second avoidance groove 114 . The second avoidance groove 114 is located in the second groove 111 b . The second avoidance groove 114 forms an opening at the bottom wall of the second groove 111 b , and the second avoidance groove 114 is connected to the accommodating groove 112 .

[0129] Exemplarily, the middle portion 11b of the base 11 may also be provided with a plurality of fastening holes 115. The fastening holes 115 of the base 11 may be blind holes, and may pass through the back side 11e of the base 11, but may not pass through the front side 11d of the base 11.

[0130] like Fig.10 As shown, the middle portion 11 b of the base 11 includes a rotating shaft 116 , a first limiting block 117 and a second limiting block 118 .

[0131] Exemplarily, the rotating shaft 116 may be located in the receiving groove 112, and in this case, the rotating shaft 116 is protruded from the bottom wall of the receiving groove 112. In one embodiment, the rotating shaft 116 may be located in the middle portion 11b of the receiving groove 112.

[0132] Exemplarily, the first stopper 117 and the second stopper 118 are both located in the receiving groove 112. At this time, the first stopper 117 and the second stopper 118 are spaced and protruded from the bottom wall of the receiving groove 112. The first stopper 117 and the second stopper 118 can be located on both sides of the rotating shaft 116. It can be understood that the first stopper 117 and the second stopper 118 of the base 11 can divide the receiving groove 112 into a first sub-groove 112a and a second sub-groove 112b that are interconnected. A portion of the rotating shaft 116 is located in the first sub-groove 112a, and a portion is located in the second sub-groove 112b.

[0133] Fig.11 yes Fig. 9 The structure diagram of the upper cover 12 shown in another angle.

[0134] like Fig.11 As shown, the upper cover 12 includes a top surface 12a and a bottom surface 12b. The top surface 12a of the upper cover 12 is connected to the bottom surface 12b of the upper cover 12.

[0135] Exemplarily, the bottom surface 12 b of the upper cover 12 includes a first arcuate surface 121 and a second arcuate surface 122 which are spaced apart from each other.

[0136] Exemplarily, the upper cover 12 is provided with a first avoidance hole 123. The first avoidance hole 123 passes through the top surface 12a and the bottom surface 12b of the upper cover 12. The first avoidance hole 123 is located between the first arcuate surface 121 and the second arcuate surface 122.

[0137] Exemplarily, the upper cover 12 is provided with a fixing hole 124. The fixing hole 124 passes through the top surface 12a and the bottom surface 12b of the upper cover 12. The fixing hole 124 is spaced apart from the first avoidance hole 123. The fixing hole 124 is also located between the first arcuate surface 121 and the second arcuate surface 122.

[0138] Exemplarily, the upper cover 12 is provided with a receiving groove 125. The receiving groove 125 penetrates the bottom surface 12b of the upper cover 12. The receiving groove 125 is located between the first arc-shaped surface 121 and the second arc-shaped surface 122.

[0139] Exemplarily, the upper cover 12 may also be provided with a plurality of fastening holes 126. The fastening holes 126 of the upper cover 12 may be through holes, and the fastening holes 126 of the upper cover 12 may penetrate the top surface 12a and the bottom surface 12b of the upper cover 12.

[0140] Fig.12 yes Figure 8 The folding mechanism 100 is shown as a partial structural diagram in one embodiment. Figure 1 .

[0141] See also Fig.12 , and combined with Fig.10 and Fig.11 As shown, the upper cover 12 is fixed on the base 11. The bottom surface 12b of the upper cover 12 faces the back surface 11e of the base 11. Exemplarily, the multiple fastening holes 115 of the base 11 are aligned with the multiple fastening holes 126 of the upper cover 12 in a one-to-one correspondence. The fasteners pass through the fastening holes 115 of the base 11 and the fastening holes 126 of the upper cover 12 to lock the upper cover 12 on the base 11. The fasteners may include screws, bolts, rivets or pins.

[0142] Exemplarily, the rotating shaft 116 of the base 11 can pass through the fixing hole 124 of the upper cover 12. At this time, a portion of the rotating shaft 116 is located in the fixing hole 124. It can be understood that through the cooperation between the rotating shaft 116 and the fixing hole 124, the connection between the upper cover 12 and the base 11 can be made more firmly, that is, the connection stability between the upper cover 12 and the base 11 is better.

[0143] Fig.13 yes Fig.12 The schematic partial cross-sectional view of one embodiment of the main shaft 1 at line CC is shown.

[0144] like Fig.13 As shown, after the upper cover 12 and the base 11 are fixed to each other, the first arc surface 121 of the upper cover 12 and the arc bottom wall of the first groove 111a of the base 11 are spaced apart, and the first arc surface 121 of the upper cover 12 and the first groove 111a of the base 11 form the first arc groove 13 of the main shaft 1.

[0145] Fig.14 yes Fig.12 The schematic partial cross-sectional view of one embodiment of the main shaft 1 at line DD is shown.

[0146] The second arc surface 122 of the upper cover 12 is spaced apart from the arc bottom wall of the second groove 111 b of the base 11 , and the second arc surface 122 of the upper cover 12 and the second groove 111 b of the base 11 form a second arc groove 14 of the main shaft 1 .

[0147] Fig.15 yes Fig.12 The schematic partial cross-sectional view of one embodiment of the main shaft 1 at line EE is shown.

[0148] like Fig.15 As shown, after the upper cover 12 and the base 11 are fixed to each other, a portion of the bottom surface 12b of the upper cover 12 and the first sub-groove 112a of the receiving groove 112 form the first receiving space 15 of the main shaft 1, and a portion of the bottom surface 12b of the upper cover 12 and the second sub-groove 112b of the receiving groove 112 form the second receiving space 16 of the main shaft 1. Among them, the first receiving space 15 and the second receiving space 16 are connected to form the receiving space 150, that is, the receiving space 150 includes the first receiving space 15 and the second receiving space 16. In addition, the first avoidance hole 123 of the upper cover 12 is connected to the first receiving space 15 and / or the second receiving space 16. At this time, the first avoidance hole 123 can be connected to the receiving space 150.

[0149] like Fig.15 As shown, a portion of the rotating shaft 116 may be located in the first accommodating space 15 , and a portion thereof may be located in the second accommodating space 16 .

[0150] Fig.16 yes Figure 8 The middle connecting assembly 2 is shown in a partially exploded view in one embodiment.

[0151] like Fig.16 As shown, the middle connecting assembly 2 includes a first fixing frame 21, a second fixing frame 22, a first connecting arm 23, a second connecting arm 24, a plug-in assembly 25, a first damping member 26a, a second damping member 26b, a third damping member 26c and a fourth damping member 26d. Exemplarily, the plug-in assembly 25 includes a first latch 251, a second latch 252, a synchronous gear 253 and a spring 254.

[0152] Fig.17 yes Fig.16 The diagram shows a partial structure of the middle connecting assembly 2 in one embodiment.

[0153] like Fig.17 As shown, the first fixing frame 21 includes a bottom plate 211, a slider 212, a first guide rail block 213a, a second guide rail block 213b, a first protrusion 214a, a second protrusion 214b, and a first guide column 215a.

[0154] Exemplarily, the bottom plate 211 of the first fixing frame 21 includes a first surface 216 a and a second surface 216 b disposed in opposite directions.

[0155] Exemplarily, the slider 212 is protrudingly disposed on the first surface 216a of the bottom plate 211 of the first fixing frame 21. The length extension direction of the slider 212 may be the X axis. In one embodiment, the slider 212 is substantially in a "T" shape.

[0156] Exemplarily, the first protrusion 214a is protruded on the first surface 216a of the bottom plate 211 of the first fixing frame 21. The first protrusion 214a is located on one side of the slider 212 and is spaced apart from the slider 212. The space between the first protrusion 214a and the slider 212 is a first space 217a.

[0157] Exemplarily, the first guide column 215a is convexly disposed on the surface of the first protrusion 214a facing the slider 212. The first guide column 215a is located in the first space 217a. The number of the first guide columns 215a can be two. The two first guide columns 215a are arranged at intervals.

[0158] Exemplarily, the first guide rail block 213a is convexly arranged on the first surface 216a of the bottom plate 211 of the first fixed frame 21. The first guide rail block 213a is located between the slider 212 and the first protrusion 214a, that is, the first guide rail block 213a is located in the first space 217a. The length extension direction of the first guide rail block 213a can be the Y-axis direction. Among them, the first guide rail block 213a is provided with a first guide groove 218a. The length extension direction of the first guide groove 218a can be the Y-axis direction. In one embodiment, the number of the first guide rail blocks 213a can be two, and the two first guide rail blocks 213a can be arranged at intervals along the X-axis direction. The first guide grooves 218a of the two first guide rail blocks 213a are arranged relative to each other.

[0159] Exemplarily, the second protrusion 214b is protruding on the first surface 216a of the bottom plate 211 of the first fixing frame 21. The second protrusion 214b is located on a side of the slider 212 away from the first protrusion 214a and is spaced apart from the slider 212. The space between the second protrusion 214b and the slider 212 is a second space 217b.

[0160] Exemplarily, the second guide rail block 213b is convexly arranged on the first surface 216a of the bottom plate 211 of the second fixing frame 22. The second guide rail block 213b is located between the slider 212 and the second protrusion 214b, that is, the second guide rail block 213b is located in the second space 217b. The length extension direction of the second guide rail block 213b can be the Y-axis direction. Among them, the second guide rail block 213b is provided with a second guide groove 218b. The length extension direction of the second guide groove 218b can be the Y-axis direction. In one embodiment, the number of the second guide rail blocks 213b can be two, and the two second guide rail blocks 213b can be arranged at intervals along the X-axis direction. The second guide grooves 218b of the two second guide rail blocks 213b are arranged relative to each other.

[0161] It is understandable that the second fixing frame 22 and the first fixing frame 21 can be of the same or similar structure, symmetrical or partially symmetrical structure, or different structure. In this embodiment, the second fixing frame 22 and the first fixing frame 21 are symmetrical structures, and the basic design of the component structure of the second fixing frame 22, the connection relationship design between the components, and the connection relationship design between the components and other structures outside the assembly can all refer to the relevant scheme of the first fixing frame 21, and at the same time, the second fixing frame 22 and the first fixing frame 21 are allowed to be slightly different in the detailed structure or position arrangement of the components. The details will not be repeated here.

[0162] Fig.18 yes Fig.16 The structure diagram of the first connecting arm 23 and the second connecting arm 24 in one embodiment is shown.

[0163] like Fig.18 As shown, the first connecting arm 23 includes a first connecting end 231 and a second connecting end 232 connected to the first connecting end 231. It can be understood that this embodiment is described by taking the first connecting end 231 of the first connecting arm 23 as a rotating end and the second connecting end 232 as a sliding end as an example. In other embodiments, the movement mode of the first connecting end 231 and the second connecting end 232 of the first connecting arm 23 is not specifically limited.

[0164] Exemplarily, the first connection end 231 of the first connection arm 23 is in an arc shape. The first connection end 231 of the first connection arm 23 includes a top surface 231a and a bottom surface 231b disposed in opposite directions, and a first side surface 231c and a second side surface 231d disposed in opposite directions. The first side surface 231c and the second side surface 231d of the first connection end 231 are connected between the top surface 231a and the bottom surface 231b of the first connection end 231. Exemplarily, the top surface 231a and the bottom surface 231b of the first connection end 231 can both be arc surfaces. The first side surface 231c and the second side surface 231d of the first connection end 231 can both be planes and in an arc shape.

[0165] Exemplarily, the first connecting end 231 of the first connecting arm 23 is provided with a first slot 2311. The first slot 2311 penetrates the top surface 231a, the bottom surface 231b and the first side surface 231c of the first connecting end 231. In other embodiments, the first slot 2311 may not penetrate the top surface 231a and / or the bottom surface 231b of the first connecting end 231.

[0166] It is understandable that the cross-sectional shape of the first slot 2311 is not limited to Fig.18 The cross-sectional shape of the first slot 2311 may be a trapezoid as shown, but may also be a rectangle, a semicircle, a triangle or an irregular shape.

[0167] like Fig.18 As shown, the second connection end 232 of the first connection arm 23 is provided with a first slide groove 2321, and the first slide groove 2321 can penetrate the bottom surface and the side surface of the second connection end 232. Among them, the bottom surface of the second connection end 232 is connected to the bottom surface 231b of the first connection end 231. The side surface of the second connection end 232 is the surface of the second connection end 232 away from the first connection end 231. Exemplarily, the shape of the first slide groove 2321 can be "T" shaped.

[0168] It is understandable that the second connecting arm 24 and the first connecting arm 23 of this embodiment can be the same or similar structure, symmetrical or partially symmetrical structure, or different structure. In this embodiment, the second connecting arm 24 and the first connecting arm 23 are symmetrical structures, and the basic design of the component structure of the second connecting arm 24, the connection relationship design between the components, and the connection relationship design between the components and other structures outside the assembly can all refer to the relevant schemes of the first connecting arm 23. For example, the second connecting arm 24 includes a third connecting end 241 and a fourth connecting end 242 connected to the third connecting end 241, and the third connecting end 241 of the second connecting arm 24 is provided with a second slot 2411, and the second slot 2411 can penetrate the second side 241d of the third connecting end 241 (the second side 241d of the third connecting end 241 and the second side 231d of the first connecting end 231 of the first connecting arm 23 face the same direction), etc. At the same time, the second connecting arm 24 and the first connecting arm 23 are allowed to be slightly different in the detailed structure or position arrangement of the components. The details will not be repeated here. In this embodiment, the third connection end 241 of the second connection arm 24 is a rotating end and the fourth connection end 242 is a sliding end. In other embodiments, the movement mode of the third connection end 241 and the fourth connection end 242 of the second connection arm 24 is not specifically limited.

[0169] Fig.19 yes Figure 8 The folding mechanism 100 is shown as a partial structural diagram in one embodiment. Figure 2 . Fig. 20 yes Figure 8 The folding mechanism 100 is shown as a partial structural diagram in one embodiment. Figure 3 . Fig.21 yes Fig. 20 The folding mechanism 100 is a partial cross-sectional schematic diagram of an embodiment at line FF.

[0170] like Figures 19 to 21 As shown, the first connection end 231 of the first connection arm 23 is rotatably connected to the main shaft 1. Exemplarily, the first connection end 231 of the first connection arm 23 can be located in the first arc groove 13 of the main shaft 1. The first connection end 231 of the first connection arm 23 can rotate in the first arc groove 13 of the main shaft 1. Among them, the top surface 231a of the first connection end 231 of the first connection arm 23 can face the first arc surface 121 of the upper cover 12, and the bottom surface 231b of the first connection end 231 of the first connection arm 23 can face the arc bottom surface of the first groove 111a of the base 11. It can be understood that the first connection end 231 of the first connection arm 23 is connected to the main shaft 1 through a virtual axis, and the structure of the rotation connection is relatively simple, occupies a small space, and is conducive to reducing the thickness of the folding mechanism 100, so that the folding mechanism 100 and the electronic device 1000 can be more easily configured to be light and thin. In some other embodiments, the first connection end 231 of the first connection arm 23 can also be connected to the main shaft 1 through a real axis, and the embodiment of the present application is not strictly limited to this.

[0171] like Figures 19 to 21 As shown, the second connecting end 232 of the first connecting arm 23 is slidably connected to the first fixing frame 21. For example, at least a portion of the slider 212 of the first fixing frame 21 can be located in the first sliding groove 2321 ( Fig.18 The structure of the first chute 2321 is also shown. Fig.18 ). It can be understood that, in this embodiment, by setting the shape of the slider 212 of the first fixing frame 21 and the first slide groove 2321 of the second connecting end 232 to be "T"-shaped, the first connecting arm 23 can slide relative to the first fixing frame 21 in the X-axis direction by utilizing the mutual cooperation between the slider 212 of the first fixing frame 21 and the first slide groove 2321 of the second connecting end 232, so that the problem of separation will not occur in the Y-axis direction and the Z-axis direction.

[0172] like Figures 19 to 21 As shown, the third connection end 241 of the second connection arm 24 is rotatably connected to the main shaft 1. It can be understood that the connection method between the third connection end 241 of the second connection arm 24 and the main shaft 1 can refer to the connection method between the first connection end 231 of the first connection arm 23 and the main shaft 1. The details are not repeated here.

[0173] In addition, the fourth connection end 242 of the second connection arm 24 is slidably connected to the second fixing frame 22. It is understood that the connection method between the fourth connection end 242 of the second connection arm 24 and the second fixing frame 22 can refer to the connection method between the second connection end 232 of the first connection arm 23 and the first fixing frame 21. The details are not repeated here.

[0174] like Figures 19 to 21 As shown, the first fixing frame 21 can be connected to the main shaft 1 through a first connecting arm 23 , the second fixing frame 22 can be connected to the main shaft 1 through a second connecting arm 24 , and the main shaft 1 can be located between the first fixing frame 21 and the second fixing frame 22 .

[0175] like Fig. 20 and Fig.21 As shown, when the folding mechanism 100 is in a flattened state, the first fixing frame 21 and the second fixing frame 22 can be located on both sides of the main shaft 1, and the first fixing frame 21 and the second fixing frame 22 are unfolded relative to the main shaft 1. Exemplarily, the main shaft 1, the first fixing frame 21, and the second fixing frame 22 can be approximately 180°. In other embodiments, the main shaft 1, the first fixing frame 21, and the second fixing frame 22 can also have a slight deviation relative to 180°, such as 165°, 177°, or 185°.

[0176] In addition, when the folding mechanism 100 is in the flattened state, most of the first connecting end 231 of the first connecting arm 23 is located in the first arc-shaped groove 13 of the main shaft 1. A small part of the slider 212 of the first fixing frame 21 is located in the first sliding groove 2321 of the second connecting end 232 of the first connecting arm 23. It can be understood that the state of the second connecting arm 24 when the folding mechanism 100 is in the flattened state can refer to the state of the first connecting arm 23 when the folding mechanism 100 is in the flattened state. The specific embodiment will not be described in detail.

[0177] like Fig.19 As shown, when the folding mechanism 100 is in a flattened state, the first slot 2311 of the first connecting end 231 of the first connecting arm 23 is arranged opposite to the first avoidance groove 113 of the base 11, and the second slot 2411 of the third connecting end 241 of the second connecting arm 24 is arranged opposite to the second avoidance groove 114 of the base 11. It can be understood that in the present application, the relative arrangement of component A and component B can be that component A is projected along the target direction to obtain projection C, and component B is projected along the target direction to obtain projection D, and projection C and projection D can overlap at least in large part. In some embodiments, the large overlap can be any of the following situations: projection C is completely located in projection D. Or, projection D is completely located in projection C. Or, projection C and projection D intersect each other, and the intersection area of ​​projection C and projection D accounts for more than 50% of projection C or projection D.

[0178] Fig. 22 yes Fig.21 The folding mechanism 100 is shown in a partial cross-sectional view in a folded state.

[0179] like Fig. 22 As shown, when the folding mechanism 100 is in the folded state, the first fixing frame 21 and the second fixing frame 22 are located on the same side of the main shaft 1, the first fixing frame 21 and the second fixing frame 22 are close to each other, and the first fixing frame 21 and the second fixing frame 22 are closed relative to the main shaft 1. Exemplarily, the main shaft 1, the first fixing frame 21 and the second fixing frame 22 can roughly form a "U" shape. In other embodiments, the main shaft 1, the first fixing frame 21 and the second fixing frame 22 can also form other shapes, which are not specifically limited in this application.

[0180] like Fig. 22 As shown, when the folding mechanism 100 is in the folded state, a small portion of the first connecting end 231 of the first connecting arm 23 is located in the first arc groove 13 of the main shaft 1. Most of the slider 212 of the first fixing frame 21 is located in the first sliding groove 2321 of the second connecting end 232 of the first connecting arm 23 (see Fig.18 It is understandable that the state of the second connecting arm 24 when the folding mechanism 100 is in the folded state can refer to the state of the first connecting arm 23 when the folding mechanism 100 is in the folded state. The specific implementation is not repeated.

[0181] Fig.23 yes Fig. 22 A partial cross-sectional view of an embodiment of the folding mechanism 100 is shown at line GG.

[0182] like Fig.23 As shown, in one embodiment, when the folding mechanism 100 is in the folded state, the first slot 2311 of the first connecting end 231 of the first connecting arm 23 and the first avoidance groove 113 of the base 11 can be staggered, that is, not arranged oppositely. The arrangement of the second slot 2411 of the third connecting end 241 of the second connecting arm 24 and the second avoidance groove 114 of the base 11 can refer to the arrangement of the first slot 2311 of the first connecting end 231 of the first connecting arm 23 and the first avoidance groove 113 of the base 11. The details are not repeated here.

[0183] See also Fig.21 and Fig. 22 , and combined with Fig.18As shown, when the folding mechanism 100 is folded from the flattened state to the folded state, the first fixed frame 21 slides relative to the second connecting end 232 of the first connecting arm 23, the first connecting end 231 of the first connecting arm 23 rotates relative to the main shaft 1, the first fixed frame 21 moves close to the main shaft 1, the second fixed frame 22 slides relative to the fourth connecting end 242 of the second connecting arm 24, the second fixed frame 22 moves close to the main shaft 1, the third connecting end 241 of the second connecting arm 24 rotates relative to the main shaft 1, and the first fixed frame 21 and the second fixed frame 22 move close to each other.

[0184] See also Fig.21 and Fig. 22 , and combined with Fig.18 As shown, when the folding mechanism 100 is unfolded from the folded state to the flattened state, the first fixed frame 21 slides relative to the second connecting end 232 of the first connecting arm 23, the first connecting end 231 of the first connecting arm 23 rotates relative to the main shaft 1, the first fixed frame 21 moves away from the main shaft 1, the second fixed frame 22 slides relative to the fourth connecting end 242 of the second connecting arm 24, the second fixed frame 22 moves away from the main shaft 1, the third connecting end 241 of the second connecting arm 24 rotates relative to the main shaft 1, and the first fixed frame 21 and the second fixed frame 22 move away from each other.

[0185] Fig.24 yes Fig.16 The diagram shows the structure of the first latch 251 at different angles in one embodiment.

[0186] like Fig.24 As shown, the first latch 251 includes a first body portion 2511, a first plug portion 2512, a push portion 2513, a first engagement portion 2514 and a first stop portion 2515. It can be understood that the first latch 251 of this embodiment is an integrally formed structure. In order to clearly and conveniently describe the specific structure of the first latch 251, Fig.24 The first body portion 2511 and the first plug portion 2512 are schematically distinguished by a dotted line. In other embodiments, the first latch 251 may also adopt other structures. For example, the first latch 251 may not include the first engaging portion 2514 and the first limiting portion 2515.

[0187] Exemplarily, the first body portion 2511 includes a side surface 2516 and a top surface 2517 and a bottom surface 2518 disposed opposite to each other. The side surface 2516 of the first body portion 2511 is connected between the top surface 2517 and the bottom surface 2518 of the first body portion 2511.

[0188] like Fig.24 As shown, the push portion 2513 can be protruded from the top surface 2517 of the first body portion 2511. The shape of the push portion 2513 is not limited to Fig.23In other embodiments, the shape of the push portion 2513 may also be cylindrical, rectangular, irregular, etc.

[0189] like Fig.24 As shown, the first plug-in portion 2512 can be protruded from the side surface 2516 of the first body portion 2511. The shape of the first plug-in portion 2512 is not limited to Fig.24 In other embodiments, the shape of the first plug-in portion 2512 may also be cylindrical, rectangular, irregular, etc.

[0190] like Fig.24 As shown, the first meshing portion 2514 may be protruded from the side surface 2516 of the first body portion 2511 and spaced apart from the first plug-in portion 2512. It is understood that the number of meshing teeth of the first meshing portion 2514 is not limited to Fig.24 Three are shown. The specific quantity can be determined according to the requirements.

[0191] like Fig.24 As shown, the first limiting portion 2515 can be protruded on the side surface 2516 of the first body portion 2511 and located on one side of the first engaging portion 2514. At this time, the first limiting portion 2515 can cover the first engaging portion 2514.

[0192] Exemplarily, the top surface of the first limiting portion 2515 may be flush with the top surface of the first body portion 2511 .

[0193] Fig.25 yes Figure 8 The folding mechanism 100 is shown as a partial structural diagram in one embodiment. Figure 4 . Fig.26 yes Figure 8 The folding mechanism 100 is shown as a partial structural diagram in one embodiment. Figure 5 .in, Fig.25 Can be Fig.26 The structural diagram of the upper cover 12 is hidden.

[0194] like Fig.25 and Fig.26 As shown, at least a portion of the first latch 251 is located in the first accommodation space 15 of the main shaft 1. The first latch 251 is movably connected to the main shaft 1. Exemplarily, the first latch 251 is slidably connected to the main shaft 1.

[0195] It is understandable that, through the cooperation of the base 11 and the upper cover 12, the first latch 251 can be limited in the X-axis direction and the Z-axis direction, and the first latch 251 can slide relative to the spindle 1 in the Y-axis direction. For example, the left side of the base 11 cooperates with the first limit block 117 and the second limit block 118 to limit the first latch 251 in the X-axis direction. The bottom of the base 11 cooperates with the upper cover 12 to limit the first latch 251 in the Z-axis direction.

[0196] Exemplarily, the first body part 2511 of the first latch 251 is movably connected to the spindle 1. The top surface 2517 of the first body part 2511 of the first latch 251 faces the same direction as the back surface 11e of the base 11 of the spindle 1. It can be understood that the first body part 2511 is arranged between the bottom of the base 11 and the upper cover 12. The bottom of the base 11 and the upper cover 12 cooperate to limit the first body part 2511 in the Z-axis direction. In addition, the first body part 2511 is arranged between the left side of the base 11 and the first limit block 117 and the second limit block 118. The left side of the base 11 cooperates with the first limit block 117 and the second limit block 118 to limit the first body part 2511 in the X-axis direction.

[0197] Exemplarily, the first plug portion 2512 of the first latch 251 is disposed toward the first connecting arm 23. The first engagement portion 2514 is located between the first limiting portion 2515 and the bottom of the base 11. In addition, a portion of the pushing portion 2513 passes through the first avoidance hole 123 of the upper cover 12 from the accommodating space 150 and extends to the outside of the main shaft 1.

[0198] It is understandable that in this embodiment, when the electronic device 1000 is in the flattened state, the electronic device 1000 also has two sub-states, namely, an unlocked state and a locked state. When the electronic device 1000 is in the unlocked state, the first connecting arm 23 no longer rotates relative to the main shaft 1. When the electronic device 1000 is in the locked state, the first connecting arm 23 can rotate relative to the main shaft 1.

[0199] like Fig.25 and Fig.26 As shown, when the first latch 251 is in the unlocked state, at least a portion of the first plug-in portion 2512 of the first latch 251 is not inserted into the first slot 2311 of the first connecting arm 23, that is, at least a portion of the first plug-in portion 2512 of the first latch 251 is located outside the first slot 2311 of the first connecting arm 23. At this time, the first connecting arm 23 can rotate relative to the main shaft 1 under external force.

[0200] For example, when the main shaft 1 is provided with the first avoidance groove 113, a portion of the first plug-in portion 2512 of the first latch 251 may not be inserted into the first avoidance groove 113 of the main shaft 1 ( Fig.10 and Fig.19 The structure of the first avoidance groove 113 is also shown. Fig.10 and Fig.19 ), that is, a portion of the first plug-in portion 2512 of the first latch 251 is located outside the first avoidance groove 113.

[0201] Fig. 27 yes Fig.25 The schematic diagram shows a partial structure of the electronic device 1000 in a locked state.

[0202] like Fig. 27 As shown, when the electronic device 1000 is in the locked state, at least a portion of the first plug portion 2512 of the first latch 251 is inserted into the first slot 2311 of the first connecting arm 23 .

[0203] Exemplarily, when the main shaft 1 is provided with the first avoidance groove 113, a portion of the first plug portion 2512 of the first latch 251 is also inserted into the first avoidance groove 113 of the main shaft 1. At this time, the first connecting arm 23 no longer rotates relative to the main shaft 1 under external force.

[0204] like Fig.25 and Fig. 27 As shown, when the first latch 251 switches from the unlocked state to the locked state, the first latch 251 slides relative to the main shaft 1 along the negative direction of the Y axis, and the first plug-in portion 2512 of the first latch 251 can be inserted into the first slot 2311 of the first connecting arm 23 along the negative direction of the Y axis.

[0205] like Fig.25 and Fig. 27 As shown, when the first latch 251 switches from the locked state to the unlocked state, the first latch 251 slides relative to the main shaft 1 along the positive direction of the Y axis, and the first plug-in portion 2512 of the first latch 251 can extend from the first slot 2311 of the first connecting arm 23 along the positive direction of the Y axis.

[0206] It is understandable that, in the present application, by arranging the first latch 251 in the main shaft 1, when the electronic device 1000 is in the flattened state, at least a portion of the first plug-in portion 2512 of the first latch 251 can be inserted into the first slot 2311 of the first connecting arm 23. In this way, the first connecting arm 23 no longer rotates relative to the main shaft 1. The first fixing frame 21 also no longer rotates relative to the main shaft 1. At this time, the main shaft 1, the first fixing frame 21 and the second fixing frame 22 can be maintained at a certain angle, for example, 180°. The stability and reliability of the flattened state of the folding mechanism 100 are better.

[0207] It is understandable that, in the present application, by providing the first avoidance groove 113 in the first arc-shaped groove 13, a portion of the first plug-in portion 2512 of the first latch 251 can be inserted into the first avoidance groove 113 when the electronic device 1000 is in a flattened state. The first avoidance groove 113 can be used to prevent the first latch 251 from interfering with the bottom wall of the first arc-shaped groove 13. In addition, the first avoidance groove 113 can also limit the first latch 251 in the X-axis direction to a certain extent, so as to improve the stability of the first latch 251.

[0208] It is understandable that the first latch 251 mentioned above can be movably connected to the main shaft 1. Exemplarily, the first latch 251 can slide relative to the main shaft 1 along the Y-axis direction. There are two driving modes for driving the first latch 251 to move relative to the main shaft 1, one is manual driving and the other is mechanical driving. Manual driving can be that when the electronic device 1000 is in a flattened state, the user can turn the push portion 2513 of the first latch 251 to move the first latch 251 along the Y-axis direction, so that the first plug-in portion 2512 of the first latch 251 is inserted into or moved out of the first slot 2311 of the first connecting arm 23. Mechanical driving can be that the first latch 251 is connected to a driving mechanism, and the driving mechanism is used to drive the first latch 251 to move along the Y-axis direction, and the first plug-in portion 2512 of the first latch 251 can be inserted into or moved out of the first slot 2311 of the first connecting arm 23. The driving mechanism may include structures such as a motor and a transmission assembly. The driving mechanism can be arranged in the main shaft 1. It is understandable that the present application does not limit the specific structure of the driving mechanism.

[0209] Fig.28 yes Fig.16 The structure diagram of the second latch 252 at another angle in one embodiment is shown.

[0210] like Fig.28 As shown, the second latch 252 includes a second body portion 2521, a second plug portion 2522, a protrusion 2523, a second engagement portion 2524 and a second stop portion 2525. It can be understood that the second latch 252 of this embodiment is an integrally formed structure. In order to clearly and conveniently describe the specific structure of the second latch 252, Fig.28 The second body portion 2521 and the second plug portion 2522 are schematically distinguished by a dotted line. In other embodiments, the second latch 252 may also adopt other structures. For example, the second latch 252 may not include the second engagement portion 2524 and the second stop portion 2525.

[0211] Exemplarily, the second body portion 2521 includes a side surface 2526 and a top surface 2527 and a bottom surface 2528 disposed opposite to each other. The side surface 2526 of the second body portion 2521 is connected between the top surface 2527 and the bottom surface 2528 of the second body portion 2521.

[0212] like Fig.28 As shown, the protrusion 2523 can be protruded from the top surface 2527 of the second body portion 2521. The shape of the protrusion 2523 is not limited to Fig.28 In other embodiments, the shape of the protrusion 2523 can also be cylindrical, rectangular, irregular, etc.

[0213] like Fig.28 As shown, the second plug-in portion 2522 can be protruded from the side surface 2526 of the second body portion 2521. The shape of the second plug-in portion 2522 is not limited to Fig.28 In other embodiments, the shape of the second plug-in portion 2522 may also be cylindrical, rectangular, irregular, etc.

[0214] like Fig.28 As shown, the second meshing portion 2524 can be protruded from the side surface 2526 of the second body portion 2521 and spaced apart from the second plug-in portion 2522. It is understood that the number of meshing teeth of the second meshing portion 2524 is not limited to Fig.28 Three are shown. The specific quantity can be determined according to the requirements.

[0215] like Fig.28 As shown, the second limiting portion 2525 can be protruded from the side surface 2526 of the second body portion 2521 and located at one side of the second engagement portion 2524. At this time, the second limiting portion 2525 can cover the second engagement portion 2524.

[0216] Exemplarily, the top surface of the second limiting portion 2525 may be flush with the top surface of the second body portion 2521 .

[0217] Fig.29 yes Figure 8 The folding mechanism 100 is shown as a partial structural diagram in one embodiment. Figure 6 .

[0218] like Fig.29 As shown, illustratively, at least a portion of the second latch 252 is located in the second accommodation space 16 of the main shaft 1. The second latch 252 is spaced apart from the first latch 251. The second latch 252 is movably connected to the main shaft 1. illustratively, the second latch 252 is slidably connected to the main shaft 1. It is understood that in order to more clearly show the positional relationship between the second latch 252, the synchronous gear 253 and other components, Fig.29 The upper cover 12 of the main shaft 1 is hidden.

[0219] It is understandable that, through the cooperation of the base 11 and the upper cover 12, the second latch 252 can be limited in the X-axis direction and the Z-axis direction, and the second latch 252 can slide relative to the spindle 1 in the Y-axis direction. For example, the right side of the base 11 cooperates with the first limit block 117 and the second limit block 118 to limit the second latch 252 in the X-axis direction. The bottom of the base 11 cooperates with the upper cover 12 to limit the second latch 252 in the Z-axis direction.

[0220] Exemplarily, the first connection end 231 and the third connection end 241 are arranged along the Y-axis direction, the first latch 251 and the second latch 252 are located between the first connection end 231 and the third connection end 241, and the first latch 251 and the second latch 252 are arranged along the X-axis direction. In this way, the arrangement of the first connection end 231, the third connection end 241, the first latch 251 and the second latch 252 on the spindle 1 is relatively compact, and the space utilization rate is high. It can be understood that the arrangement of the first latch 251 and the second latch 252 along the X-axis direction includes two situations, one situation is that most of the first latch 251 and most of the second latch 252 are arranged along the X-axis direction, and a small part of the first latch 251 and a small part of the second latch 252 have an overlapping area in the Y-axis direction. Another situation is that all of the first latch 251 and all of the second latch 252 are arranged along the X-axis direction.

[0221] Exemplarily, the second body part 2521 of the second latch 252 is movably connected to the spindle 1. The top surface 2527 of the second body part 2521 of the second latch 252 faces the same direction as the back surface 11e of the base 11 of the spindle 1. It can be understood that the second body part 2521 is arranged between the bottom of the base 11 and the upper cover 12. The bottom of the base 11 and the upper cover 12 cooperate to limit the second body part 2521 in the Z-axis direction. In addition, the second body part 2521 is arranged between the right side of the base 11 and the first limit block 117 and the second limit block 118. The right side of the base 11 cooperates with the first limit block 117 and the second limit block 118 to limit the second body part 2521 in the X-axis direction.

[0222] For example, the second plug-in portion 2522 of the second plug pin 252 is disposed toward the second connecting arm 24. The protrusion 2523 is located between the second body portion 2521 and the upper cover 12 (see Fig.26 In addition, the second engagement portion 2524 is located between the second limiting portion 2525 and the bottom of the base 11.

[0223] like Fig.29As shown, the synchronous gear 253 is located on the main shaft 1, and the synchronous gear 253 is rotatably connected to the rotating shaft 116 of the base 11. Exemplarily, the synchronous gear 253 can be sleeved on the rotating shaft 116 of the base 11. At this time, a part of the synchronous gear 253 can be located in the first accommodating space 15, and a part can be located in the second accommodating space 16.

[0224] like Fig.29 As shown, the first latch 251, the second latch 252 and the synchronous gear 253 are all located in the accommodation space 150, and the synchronous gear 253 can be engaged with the first meshing portion 2514 of the first latch 251, and can also be engaged with the second meshing portion 2524 of the second latch 252 (see Fig.28 , Fig.28 The second meshing portion 2524 is meshed with the first meshing portion 2514 through the synchronous gear 253 as shown in FIG.

[0225] Exemplarily, a portion of the synchronous gear 253 is located between the first limiting portion 2515 of the first latch 251 and the bottom of the base 11. A portion of the synchronous gear 253 is located between the second limiting portion 2525 of the second latch 252 and the bottom of the base 11. In this way, the bottom of the base 11 cooperates with the first limiting portion 2515 of the first latch 251 and the second limiting portion 2525 of the second latch 252 to limit the synchronous gear 253 in the Z-axis direction.

[0226] It is understandable that when the electronic device 1000 is in the unlocked state, the second connecting arm 24 may no longer rotate relative to the main shaft 1. When the electronic device 1000 is in the locked state, the second connecting arm 24 may also rotate relative to the main shaft 1.

[0227] like Fig.29 As shown, when the second latch 252 is in the unlocked state, at least a portion of the second plug-in portion 2522 of the second latch 252 is not inserted into the second slot 2411 of the second connecting arm 24, that is, at least a portion of the second plug-in portion 2522 of the second latch 252 is located outside the second slot 2411 of the second connecting arm 24. At this time, the second connecting arm 24 can rotate relative to the main shaft 1 under external force.

[0228] For example, when the spindle 1 is provided with the second avoidance groove 114, a portion of the second plug-in portion 2522 of the second latch 252 may not be inserted into the second avoidance groove 114 of the spindle 1 ( Fig.10 The structure of the second avoidance groove 114 is also shown. Fig.10 ), that is, a portion of the second plug-in portion 2522 of the second latch 252 is located outside the second avoidance groove 114.

[0229] Fig.30 yes Fig.29 The folding mechanism 100 is shown in a schematic diagram of a structure of an embodiment. It can be understood that in order to more clearly show the positional relationship and connection relationship between the first latch 251, the second latch 252, the synchronous gear 253 and other components, Fig.30 The upper cover 12 is hidden.

[0230] like Fig.30 As shown, when the second latch 252 is in the locked state, at least a portion of the second plug portion 2522 of the second latch 252 is inserted into the second slot 2411 of the second connecting arm 24. At this time, the second connecting arm 24 can no longer rotate relative to the main shaft 1 under external force.

[0231] Exemplarily, when the main shaft 1 is provided with the second avoidance groove 114 , a portion of the second plug-in portion 2522 of the second latch 252 is also inserted into the second avoidance groove 114 of the main shaft 1 .

[0232] like Fig.29 and Fig.30 As shown, when the electronic device 1000 switches from the locked state to the unlocked state, a force along the positive direction of the Y axis can be applied to the push portion 2513 of the first latch 251 (for example, the push portion 2513 is moved along the positive direction of the Y axis), and the first latch 251 slides relative to the main shaft 1 along the positive direction of the Y axis, so that the synchronous gear 253 rotates clockwise, and the second meshing portion 2524 of the second latch 252 (see Fig.28 ) As the synchronous gear 253 rotates, the second latch 252 slides relative to the main shaft 1 along the negative direction of the Y axis, and the second plug-in portion 2522 of the second latch 252 can extend from the second slot 2411 of the second connecting arm 24 along the negative direction of the Y axis.

[0233] like Fig.29 and Fig.30 As shown, when the electronic device 1000 switches from the unlocked state to the locked state, a force along the negative direction of the Y axis can be applied to the pushing portion 2513 of the first latch 251 (for example, the pushing portion 2513 is moved along the negative direction of the Y axis), and the first latch 251 slides relative to the main shaft 1 along the negative direction of the Y axis, so that the synchronous gear 253 rotates counterclockwise, and the second meshing portion 2524 of the second latch 252 (see Fig.28 ) As the synchronous gear 253 rotates, the second latch pin 252 slides relative to the main shaft 1 along the positive direction of the Y axis, and the second plug-in portion 2522 of the second latch pin 252 can be inserted into the second slot 2411 of the second connecting arm 24 along the positive direction of the Y axis.

[0234] It can be understood that the driving method for driving the second latch 252 to move relative to the main shaft 1 is to drive the first latch 251 to move along the Y-axis direction, and then use the synchronous gear 253 to synchronously drive the second latch 252 to move along the Y-axis direction. In other embodiments, the structure of the second latch 252 can also adopt the structure of the first latch 251. In this case, the user can directly turn the second latch 252 to move the second latch 252 along the Y-axis direction. Or directly use the driving mechanism to drive the first latch 251 to move along the Y-axis direction.

[0235] It is understandable that, in the present application, by arranging the second latch 252 in the main shaft 1, when the electronic device 1000 is in the flattened state, at least a portion of the second plug-in portion 2522 of the second latch 252 can be inserted into the second slot of the second connecting arm 24. In this way, the second connecting arm 24 no longer rotates relative to the main shaft 1. The second fixing frame 22 also no longer rotates relative to the main shaft 1. At this time, the main shaft 1, the first fixing frame 21 and the second fixing frame 22 can be maintained at a certain angle, for example, 180°. The stability and reliability of the flattened state of the folding mechanism 100 are better.

[0236] It is understandable that in this embodiment, by setting a synchronous gear 253 between the first latch 251 and the second latch 252, while driving the first latch 251 to move along the Y-axis direction, the second latch 252 is synchronously driven to move along the Y-axis direction by the synchronous gear 253. In this way, in this embodiment, the synchronous movement of the first latch 251 and the second latch 252 can be achieved by a driving force. The first latch 251 and the second latch 252 are respectively inserted into the first connecting arm 23 and the second connecting arm 24. The structure of the plug assembly 25 of this embodiment is relatively simple, which can reduce the difficulty of assembly and manufacturing cost. In addition, when the electronic device 1000 is in a locked state, the first latch 251 and the second latch 252 can be respectively inserted into the first connecting arm 23 and the second connecting arm 24 at the same time. Compared with the solution of separately setting the first latch 251 to be inserted into the first connecting arm 23 or the second latch 252 to be inserted into the second connecting arm 24, the first fixing frame 21 and the second fixing frame 22 are less likely to rotate relative to the main shaft 1. The main shaft 1, the first fixing frame 21 and the second fixing frame 22 can be better maintained at a certain angle, such as 180°. The stability and reliability of the flattened state of the folding mechanism 100 are better.

[0237] It is understandable that, in the present application, by providing the second avoidance groove 114 in the second arc-shaped groove 14, a portion of the second plug-in portion 2522 of the second latch 252 can be inserted into the second avoidance groove 114 when the electronic device 1000 is in a flattened state. The second avoidance groove 114 can be used to prevent the second latch 252 from interfering with the bottom wall of the second arc-shaped groove 14. In addition, the second avoidance groove 114 can also limit the second latch 252 in the X-axis direction to a certain extent, so as to improve the stability of the second latch 252.

[0238] Fig.31 yes Figure 8 The folding mechanism 100 is a schematic diagram of a part of the structure at another angle of an embodiment. Fig.31 The assembly structure of the spring piece 254 fixed to the upper cover 12 is shown.

[0239] like Fig.31 As shown, the spring piece 254 includes a first straight portion 2541, a bent portion 2542 and a second straight portion 2543 connected in sequence. In other words, the bent portion 2542 is connected between the first straight portion 2541 and the second straight portion 2543. Exemplarily, the surface of the bent portion 2542 may be a curved surface or an arc surface.

[0240] like Fig.31 As shown, illustratively, the first straight portion 2541 and the second straight portion 2543 of the spring sheet 254 are both fixed to the side of the upper cover 12 facing the accommodating space 150. The bent portion 2542 of the spring sheet 254 protrudes in a direction away from the upper cover 12. In other words, the bent portion 2542 of the spring sheet 254 protrudes in a direction close to the second latch 252.

[0241] Exemplarily, the first straight portion 2541 and the second straight portion 2543 of the elastic sheet 254 may be fixed to the upper cover 12 by means of gluing, welding or the like.

[0242] Exemplarily, the first straight portion 2541 and the second straight portion 2543 of the spring sheet 254 are located in the receiving groove 125 of the upper cover 12. Exemplarily, the first straight portion 2541 and the second straight portion 2543 of the spring sheet 254 are fixed to the bottom wall of the receiving groove 125. In this way, in the Z-axis direction, the spring sheet 254 and the upper cover 12 have an overlapping area, which can improve space utilization.

[0243] Fig.32 yes Figure 8 The folding mechanism 100 is shown as a partial structural diagram in one embodiment. Figure 7 .

[0244] like Fig.31 and Fig.32 As shown, when the upper cover 12 (see Fig.31) is fixed to the base 11 , the bent portion 2542 of the spring piece 254 protrudes toward the direction close to the second latch 252 .

[0245] like Fig.31 and Fig.32 As shown, when the electronic device 1000 is in the unlocked state, that is, when the first latch 251 is separated from the first slot 2311, the protrusion 2523 of the second latch 252 can be located on the side of the bent portion 2542 of the spring 254 away from the third connection end 241 of the second connecting arm 24. The bent portion 2542 of the spring 254 can be used to block the second latch 252 from moving in the direction close to the second connecting arm 24, so as to prevent the second connecting arm 24 from being unable to rotate due to the second plug-in portion 2522 of the second latch 252 being inserted into the second slot 2411 during the rotation of the second connecting arm 24, that is, to ensure that the second connecting arm 24 can rotate relative to the main shaft 1. It can be understood that, since the bent portion 2542 of the spring 254 can be used to block the second latch 252 from moving in the direction close to the second connecting arm 24, the second latch 252 will not drive the synchronous gear 253 to rotate. The synchronous gear 253 will not drive the first latch 251 to move in the direction close to the first connecting arm 23, thereby preventing the first connecting arm 23 from being unable to rotate due to the insertion portion of the first latch 251 into the first slot 2311 during the rotation of the first connecting arm 23, that is, ensuring that the first connecting arm 23 can rotate relative to the main shaft 1.

[0246] Fig.33 yes Fig.32 The folding mechanism 100 is shown in a schematic diagram of a structure of an embodiment. It can be understood that in order to more clearly show the connection relationship between the plug-in component 25 and other components, Fig.32 and Fig.33 The upper cover 12 is hidden.

[0247] like Fig.33As shown, when the electronic device 1000 is in a locked state, that is, when the first latch 251 is inserted into the first slot 2311, the protrusion 2523 of the second latch 252 can be located on the side of the bent portion 2542 of the spring 254 close to the third connection end 241 of the second connecting arm 24. The bent portion 2542 of the spring 254 can be used to block the second latch 252 from moving in a direction away from the second connecting arm 24, thereby limiting the second plug-in portion 2522 of the second latch 252 from being disengaged from the second slot 2411, ensuring that the second connecting arm 24 no longer rotates relative to the main shaft 1, and improving the connection reliability between the second latch 252 and the second connecting arm 24. It can be understood that, since the bent portion 2542 of the spring 254 can be used to block the second latch 252 from moving in a direction away from the second connecting arm 24, the second latch 252 will not drive the synchronous gear 253 to rotate. The synchronous gear 253 will not drive the first latch 251 to move in a direction away from the first connecting arm 23, thereby limiting the first plug-in portion 2512 of the first latch 251 from being disengaged from the first slot 2311, thereby ensuring that the first connecting arm 23 no longer rotates relative to the main shaft 1, thereby improving the connection reliability between the first latch 251 and the first connecting arm 23.

[0248] It can be understood that when the electronic device 1000 switches from the locked state to the unlocked state, the second latch 252 slides relative to the main shaft 1 along the negative direction of the Y axis, and the convex portion 2523 of the second latch 252 passes over the bent portion 2542 of the spring sheet 254, and moves from the side of the bent portion 2542 of the spring sheet 254 close to the second connecting arm 24 to the side of the bent portion 2542 of the spring sheet 254 away from the second connecting arm 24. When the electronic device 1000 switches from the unlocked state to the locked state, the second latch 252 slides relative to the main shaft 1 along the positive direction of the Y axis, and the convex portion 2523 of the second latch 252 passes over the bent portion 2542 of the spring sheet 254, and moves from the side of the bent portion 2542 of the spring sheet 254 away from the second connecting arm 24 to the side of the bent portion 2542 of the spring sheet 254 close to the second connecting arm 24. Since the spring sheet 254 is deformable, the spring sheet 254 releases space by deformation, so that the protrusion 2523 of the second latch 252 can go over the bent portion 2542 of the spring sheet 254 .

[0249] It is understandable that the above embodiment introduces a setting mode for limiting the movement of the second latch 252 when the plug assembly 25 is in a locked state or an unlocked state. In other embodiments, there are many ways to limit the movement of the second latch 252 when the plug assembly 25 is in a locked state or an unlocked state, and the specific application is not limited. For example, the second latch 252 may not include the protrusion 2523. At this time, the bent portion 2542 of the spring 254 can be against the main body of the second latch 252. The spring 254 can apply pressure along the Z-axis direction to the second latch 252, thereby increasing the friction between the second latch 252 and the base 11. In this way, when the plug assembly 25 is in a locked state, the bent portion 2542 of the spring 254 can prevent the second latch 252 from moving in a direction away from the second connecting arm 24, thereby limiting the second plug portion 2522 of the second latch 252 from coming out of the second slot 2411, ensuring that the second connecting arm 24 no longer rotates relative to the main shaft 1. When the plug-in assembly 25 is in an unlocked state, the bent portion 2542 of the spring 254 can be used to block the second latch 252 from moving in a direction close to the second connecting arm 24, thereby preventing the second connecting arm 24 from being unable to rotate due to the plug-in portion of the second latch 252 being inserted into the second slot 2411 during the rotation of the second connecting arm 24, thereby ensuring that the second connecting arm 24 can rotate relative to the main shaft 1.

[0250] It is understandable that the above embodiment introduces a setting method in which the movement of the second latch 252 is limited by the spring piece 254 when the electronic device 1000 is in a locked state or an unlocked state, and the movement of the first latch 251 is limited by the cooperation of the second latch 252, the synchronization gear 253 and the first latch 251. In other embodiments, when the synchronization gear 253 is not provided, another spring piece 254 can be directly provided on the first latch 251, and the movement of the first latch 251 can be limited by the cooperation of the other spring piece 254 and the first latch 251. Among them, the structural setting of the other spring piece 254 and the first latch 251 can refer to the structure of the second latch 252 and the spring piece 254. The specific description is not repeated in this application.

[0251] Fig.34 yes Fig.16 A partially exploded view of the first damping member 26a and the second damping member 26b is shown in one embodiment. Fig.35 yes Fig.16 An enlarged view of the first damping member 26a, the second damping member 26b, the third damping member 26c and the fourth damping member 26d is shown.

[0252] like Fig.34 and Fig.35As shown, the first damping member 26a includes a first bracket 261a and a first elastic member 262a. The first bracket 261a is a rigid structure, so that it is not easy to deform under the action of external force. Exemplarily, the first bracket 261a includes a plurality of first fixed columns 263a, a first abutting block 264a and two first sliding blocks 265a. The plurality of first fixed columns 263a are fixed to one side of the first abutting block 264a at intervals. The two first sliding blocks 265a are fixed to one side of the first abutting block 264a at intervals. The plurality of first fixed columns 263a are located between the two first sliding blocks 265a.

[0253] Exemplarily, the first elastic member 262a may include a plurality of springs. The number of the springs may be the same as the number of the first fixing posts 263a. The plurality of springs are sleeved on the plurality of first fixing posts 263a in a one-to-one correspondence. Exemplarily, one end of the spring may abut against the first abutting block 264a of the first bracket 261a. It is understood that the number of the first fixing posts 263a and the springs is not limited to Fig.16 In other embodiments, the number of the first fixing column 263a and the spring is not strictly limited. In other embodiments, one end of the spring can also be fixed to the first abutting block 264a of the first bracket 261a by welding or the like.

[0254] It is understandable that the second damping member 26b and the first damping member 26a may be of the same or similar structure, symmetrical or partially symmetrical structure, or different structure. In the present embodiment, the second damping member 26b and the first damping member 26a are symmetrical structures, and the basic design of the component structure of the second damping member 26b, the connection relationship design between the components, and the connection relationship design between the components and other structures outside the assembly can all refer to the relevant scheme of the first damping member 26a, while allowing the second damping member 26b and the first damping member 26a to be slightly different in the detailed structure or position arrangement of the components. For example, the second damping member 26b includes a second bracket 261b and a second elastic member 262b. The second bracket 261b is a rigid structure, so that it is not easy to deform under the action of external force. Exemplarily, the second bracket 261b has a plurality of second fixing columns 263b arranged at intervals. Exemplarily, the second elastic member 262b may include a plurality of springs. The plurality of springs are sleeved on the plurality of second fixing columns 263b in a one-to-one correspondence.

[0255] It is understandable that the structure of the third damping member 26c is similar or identical to that of the first damping member 26a, and the structure of the fourth damping member 26d is similar or identical to that of the second damping member 26b, and similar contents are not repeated here.

[0256] Fig.36 yes Figure 8 The folding mechanism 100 is shown as a partial structural diagram in one embodiment. Figure 8 .

[0257] like Fig.36 As shown, the first damping member 26a is located on the first fixing frame 21. For example, the first damping member 26a may be located on a side of the slider 212 close to the first protrusion 214a, and at least part of the first damping member 26a may be located between the two first guide rail blocks 213a of the first fixing frame 21.

[0258] Exemplarily, the first bracket 261a of the first damping member 26a is slidably connected to the first fixing frame 21. Exemplarily, the two first sliding blocks 265a of the first bracket 261a can be respectively located in the first guide grooves 218a of the two first guide rail blocks 213a (see Fig.17 The first bracket 261a can slide in the first guide grooves 218a of the two first guide rail blocks 213a.

[0259] For example, the two first elastic members 262a of the first damping member 26a are sleeved on the two first guide posts 215a of the first fixing frame 21 in a one-to-one correspondence (see Fig.17 ). The other end of the first elastic member 262a abuts against the first protrusion 214a of the first fixing frame 21. In other embodiments, the other end of the first elastic member 262a may also be fixed to the first protrusion 214a of the first fixing frame 21 by welding or the like.

[0260] Exemplarily, the first abutting block 264a of the first bracket 261a of the first damping member 26a abuts against the second connecting end 232 of the first connecting arm 23. The first elastic member 262a is used to apply a damping force to the second connecting end 232 through the first bracket 261a to limit the first connecting arm 23.

[0261] For example, the contact position between the first bracket 261a and the second connecting end 232 of the first connecting arm 23 can be a bevel fit. In this way, the first bracket 261a can apply a force along the positive direction of the X-axis to the first connecting arm 23 under the action of the first elastic member 262a, that is, the first damping member 26a can provide a pre-tightening force to the first connecting arm 23, thereby limiting the first connecting arm 23 from easily rotating relative to the main shaft 1 without external force.

[0262] like Fig.36 As shown, the second damping member 26b is located on the first fixing frame 21. The second damping member 26b can be located on a side of the slider 212 close to the second protrusion 214b, and at least a portion can be located between the two second guide rail blocks 213b of the first fixing frame 21. It can be understood that the connection method of the second damping member 26b and the first fixing frame 21 can refer to the connection method of the first damping member 26a and the first fixing frame 21. The specific embodiment will not be described in detail.

[0263] In addition, the second damping member 26b abuts against the second connecting end 232 of the first connecting arm 23. The second damping member 26b can be located on a side of the first connecting arm 23 away from the first damping member 26a. The second damping member 26b can apply a damping force to the first connecting arm 23, that is, the second damping member 26b can also provide a pre-tightening force to the first connecting arm 23, thereby further limiting the first connecting arm 23 from being easily rotated relative to the main shaft 1 without external force. The matching relationship between the second damping member 26b and the first connecting arm 23 can refer to the matching relationship between the first damping member 26a and the first connecting arm 23. The details are not repeated here.

[0264] Exemplarily, the first damping member 26a and the second damping member 26b jointly resist the second connecting end 232 of the first connecting arm 23, so that the first connecting arm 23 and the first fixing frame 21 can maintain a preset relative position relationship when not subjected to a large external force, the folding mechanism 100 can stay at a preset angle, and the rotating device can maintain a flattened state or a folded state, so as to improve the user experience of the folding mechanism 100 and the electronic device 1000.

[0265] It is understandable that when the electronic device 1000 is folded or flattened many times, the damping force of the springs of the first damping member 26a and the second damping member 26b will decrease, and the resistance and limiting ability of the first connecting arm 23 will be weakened. When the electronic device 1000 is in the flattened state, the first fixing frame 21 cannot maintain the preset relative position relationship when it is not subjected to a large external force, and there will be a relatively obvious angle between the first fixing frame 21 and the second fixing frame 22, which can be 150°, 155° or 160°. In the present application, by setting the first latch 251, the second latch 252 and the synchronous gear 253, when the first latch 251 and the second latch 252 are in the locked state, the first connecting arm 23 and the second connecting arm 24 will no longer rotate relative to the main shaft 1 when it is not subjected to a large external force, and the first fixing frame 21 and the second fixing frame 22 will no longer rotate relative to the main shaft 1. At this time, the main shaft 1, the first fixing frame 21 and the second fixing frame 22 can be maintained at a certain angle, such as 180°. The stability and reliability of the flattened state of the folding mechanism 100 are better.

[0266] like Fig.36As shown, the third damper 26c and the fourth damper 26d are both located on the second fixing frame 22. The third damper 26c and the fourth damper 26d can be located on both sides of the second connecting arm 24. The third damper 26c and the fourth damper 26d are both against the fourth connecting end 242 of the second connecting arm 24. The third damper 26c and the fourth damper 26d can apply a force along the positive direction of the X-axis to the second connecting arm 24, that is, the third damper 26c and the fourth damper 26d can provide a pre-tightening force to the second connecting arm 24, thereby further limiting the second connecting arm 24 from being easily rotated relative to the main shaft 1 without external force. It can be understood that the matching relationship between the third damper 26c, the fourth damper 26d and the second fixing frame 22 and the second connecting arm 24 can refer to the matching relationship between the first damper 26a, the second damper 26b and the first connecting arm 23. The details are not repeated here.

[0267] It is understandable that when the electronic device 1000 is folded or flattened many times, the damping force of the spring of the third damping member 26c and the fourth damping member 26d will decrease, and the resistance and limiting ability of the second connecting arm 24 will be weakened. When the electronic device 1000 is in the flattened state, the second fixing frame 22 cannot maintain the preset relative position relationship when not subjected to a large external force, and there will be a relatively obvious angle between the first fixing frame 21 and the second fixing frame 22, which can be 150°, 155° or 160°. In the present application, by setting the first latch 251, the second latch 252 and the synchronous gear 253, when the first latch 251 and the second latch 252 are in the locked state, the first connecting arm 23 and the second connecting arm 24 will no longer rotate relative to the main shaft 1 when not subjected to a large external force, and the first fixing frame 21 and the second fixing frame 22 will no longer rotate relative to the main shaft 1. At this time, the main shaft 1, the first fixing frame 21 and the second fixing frame 22 can be maintained at a certain angle, such as 180°. The stability and reliability of the flattened state of the folding mechanism 100 are better.

[0268] Fig.37 yes Figure 6 The electronic device 1000 is shown in an exploded view from another angle according to an embodiment. Fig.38 yes Fig.37 The structure diagram of the electronic device 1000 is shown in a locked state.

[0269] like Fig.37 and Fig.38As shown, the first fixing frame 21 is fixed on the first shell 300. The second fixing frame 22 is fixed on the second shell 400. Exemplarily, the first shell 300 can be connected to the first shell 300 by screws. The second shell 400 can be connected to the second shell 400 by screws. It can be understood that in this embodiment, since the first connecting arm 23 is connected to the first fixing frame 21, and the first fixing frame 21 is fixed on the first shell 300, the first connecting arm 23 is connected to the first shell 300 through the first fixing frame 21. In other embodiments, the folding mechanism 100 may not be provided with the first fixing frame 21, in which case the first connecting arm 23 is directly connected to the first shell 300. Similarly, in other embodiments, the second connecting arm 24 is directly connected to the second shell 400. Specifically, this application is not limited.

[0270] like Fig.37 and Fig.38 As shown, when the electronic device 1000 switches from the flattened state to the folded state, the first housing 300 and the second housing 400 move closer to each other, the first housing 300 can drive the first fixing frame 21 to rotate relative to the main axis 1 through the first connecting arm 23, and the second housing 400 can drive the second fixing frame 22 to rotate relative to the main axis 1 through the second connecting arm 24. In the process of the first fixing frame 21 and the second fixing frame 22 rotating relative to the main axis 1, the first fixing frame 21 also slides relative to the first connecting arm 23, the first fixing frame 21 and the first housing 300 move in a direction close to the main axis 1, the second fixing frame 22 also slides relative to the second connecting arm 24, and the second fixing frame 22 and the second housing 400 move in a direction close to the main axis 1.

[0271] like Fig.37 and Fig.38 As shown, when the electronic device 1000 switches from the folded state to the flattened state, the first housing 300 and the second housing 400 open to each other, the first housing 300 can drive the first fixing frame 21 to rotate relative to the main axis 1 through the first connecting arm 23, and the second housing 400 can drive the second fixing frame 22 to rotate relative to the main axis 1 through the second connecting arm 24. In the process of the first fixing frame 21 and the second fixing frame 22 rotating relative to the main axis 1, the first fixing frame 21 also slides relative to the first connecting arm 23, the first fixing frame 21 and the first housing 300 move in a direction away from the main axis 1, the second fixing frame 22 also slides relative to the second connecting arm 24, and the second fixing frame 22 and the second housing 400 move in a direction away from the main axis 1.

[0272] See also Fig.37 , and combined with Fig.36As shown, in one case, the electronic device 1000 includes a first damper 26a, a second damper 26b, a third damper 26c and a fourth damper 26d. When the electronic device 1000 is folded or flattened a large number of times, the damping force of the spring of the first damper 26a and the spring of the second damper 26b will decrease, and the resistance and limiting ability of the first connecting arm 23 will be weakened. The damping force of the spring of the third damper 26c and the spring of the fourth damper 26d will decrease, and the resistance and limiting ability of the second connecting arm 24 will be weakened. In addition, since the electronic device 1000 has been stationary in a folded state for a long time, the rewinding force of the flexible screen 200 is relatively large. It can be understood that the rewinding force can be the internal stress of the flexible screen 200 that allows the flexible screen 200 to return to the folded state. In this way, when the electronic device 1000 is in a flattened state, since the flexible screen 200 has a rewinding force, the flexible screen 200 will overcome the small elastic force of the first damping member 26a, the second damping member 26b, the third damping member 26c and the fourth damping member 26d to drive the first shell 300 and the second shell 400 to move closer to each other, and the first shell 300 can drive the first fixing frame 21 to rotate relative to the main axis 1 through the first connecting arm 23, and the second shell 400 can drive the second fixing frame 22 to rotate relative to the main axis 1 through the second connecting arm 24. At this time, when the electronic device 1000 is in a flattened state, the first shell 300 and the second shell 400 cannot maintain a preset relative position relationship (for example, the first shell 300 and the second shell 400 are maintained at a state of 180°), that is, the electronic device 1000 will have a flattened hunchback (unflattened) phenomenon. For example, there will be a relatively obvious angle between the first shell 300 and the second shell 400, which can be 150°, 155° or 160°. In the embodiment, by setting the first latch 251, the second latch 252 and the synchronous gear 253 in the main shaft 1, when the electronic device 1000 is in the flattened state, the first latch 251 can be inserted into the first slot 2311 of the first connecting arm 23, and the second latch 252 can be inserted into the second slot 2411 of the second connecting arm 24. At this time, even if the flexible screen 200 applies a force to the first shell 300 and the second shell 400 to move closer to each other, the first connecting arm 23 and the second connecting arm 24 no longer rotate relative to the main shaft 1, the first fixing frame 21 and the second fixing frame 22 no longer rotate relative to the main shaft 1, and the first shell 300 and the second shell 400 no longer rotate relative to the main shaft 1. At this time, the first shell 300 and the second shell 400 can be maintained in a preset relative position (for example, the first shell 300 and the second shell 400 are maintained at 180°). When the electronic device 1000 is in the flattened state, the electronic device 1000 is more beautiful.

[0273] It is understandable that if the folding mechanism 100 includes the first damping member 26a, the second damping member 26b, the third damping member 26c and the fourth damping member 26d, the user can choose whether to insert the first latch 251 into the first slot 2311 when the electronic device 1000 is in the flattened state. For example, when the number of folding times or flattening times of the electronic device 1000 is small, since the damping forces of the first damping member 26a, the second damping member 26b, the third damping member 26c and the fourth damping member 26d are normal, the first damping member 26a and the second damping member 26b can normally apply the damping force to the first connecting arm 23, and the third damping member 26c and the fourth damping member 26d can normally apply the damping force to the second connecting arm 24. At this time, the first damper 26a, the second damper 26b, the third damper 26c and the fourth damper 26d can lock the first connecting arm 23 and the second connecting arm 24 from rotating, and the user does not need to insert the first latch 251 into the first slot 2311 when the electronic device 1000 is in a flattened state. When the electronic device 1000 is folded or flattened many times, the damping force of the first damper 26a, the second damper 26b, the third damper 26c and the fourth damper 26d is invalid, so that the first damper 26a and the second damper 26b cannot apply the damping force to the first connecting arm 23, and the third damper 26c and the fourth damper 26d cannot apply the damping force to the second connecting arm 24. At this time, the first damper 26a, the second damper 26b, the third damper 26c and the fourth damper 26d cannot lock the first connecting arm 23 and the second connecting arm 24 from rotating, and the user can insert the first pin 251 into the first slot 2311 when the electronic device 1000 is in a flat state.

[0274] See also Fig.37 , and combined with Fig.36 As shown, in another case, when the electronic device 1000 does not include the first damping member 26a, the second damping member 26b, the third damping member 26c and the fourth damping member 26d. In this embodiment, by arranging the plug-in assembly 25 in the main shaft 1, when the electronic device 1000 is in a flattened state, on the one hand, a locking method of the first connecting arm 23 and the second connecting arm 24 can be provided so that the first shell 300 and the second shell 400 can be maintained in a preset relative position, and on the other hand, the problem that the first shell 300 and the second shell 400 cannot be maintained in a preset relative position due to the rewinding force of the flexible screen 200 (for example, the first shell 300 and the second shell 400 are maintained at 180°) can be solved, that is, the electronic device 1000 will have a flattened hunchback phenomenon.

[0275] First, a locking method for the first connecting arm 23 and the second connecting arm 24 is provided. When the electronic device 1000 is in a flattened state, the first latch 251 of the plug-in assembly 25 can be inserted into the first slot 2311 of the first connecting arm 23, and the second latch 252 can be inserted into the second slot 2411 of the second connecting arm 24. In this way, the first connecting arm 23 and the second connecting arm 24 no longer rotate relative to the main shaft 1, the first fixing frame 21 and the second fixing frame 22 no longer rotate relative to the main shaft 1, and the first shell 300 and the second shell 400 no longer rotate relative to the main shaft 1. The first shell 300 and the second shell 400 can be maintained in a preset relative position (for example, the first shell 300 and the second shell 400 are maintained in a 180° state). At this time, when the electronic device 1000 is in a flattened state, the electronic device 1000 is more beautiful.

[0276] Second, solve the problem of flattening hunchback phenomenon of electronic device 1000. It is understandable that, since the electronic device 1000 is in a folded state for a long time, the rewinding force of the flexible screen 200 will be relatively large. In this way, when the electronic device 1000 is in a flattened state, since the flexible screen 200 has a rewinding force, the flexible screen 200 will directly drive the first shell 300 and the second shell 400 to move closer to each other, and the first shell 300 can drive the first fixing frame 21 to rotate relative to the main axis 1 through the first connecting arm 23, and the second shell 400 can drive the second fixing frame 22 to rotate relative to the main axis 1 through the second connecting arm 24. At this time, when the electronic device 1000 is in a flattened state, the first shell 300 and the second shell 400 cannot maintain the preset relative position (for example, the first shell 300 and the second shell 400 are maintained at 180°), that is, the electronic device 1000 will have a flattening hunchback phenomenon. For example, there will be a more obvious angle between the first shell 300 and the second shell 400, which can be 150°, 155° or 160°, etc. In an embodiment, when the electronic device 1000 is in a flattened state, the first latch 251 can be inserted into the first slot 2311 of the first connecting arm 23, and the second latch 252 can be inserted into the second slot 2411 of the second connecting arm 24. At this time, even if the flexible screen 200 applies a force to the first shell 300 and the second shell 400 to move closer to each other, the first connecting arm 23 and the second connecting arm 24 no longer rotate relative to the main axis 1, the first fixing frame 21 and the second fixing frame 22 no longer rotate relative to the main axis 1, and the first shell 300 and the second shell 400 no longer rotate relative to the main axis 1. At this time, the first shell 300 and the second shell 400 can be maintained in a preset relative position (for example, the first shell 300 and the second shell 400 are maintained at 180°). When the electronic device 1000 is in a flattened state, the electronic device 1000 is more beautiful.

[0277] Fig.39 yes Figure 6The illustrated diagram is a partial structural diagram of the electronic device 1000 at another angle in one embodiment.

[0278] like Fig.39 As shown, the first shielding plate 4a is connected to the folding mechanism 100. For example, the first shielding plate 4a can be connected to the first connecting arm 23 (see Fig.36 ) of the second connection terminal 232 (see Fig.36 ) is fixedly connected. Exemplarily, a portion of the first shielding plate 4a shields the side of the folding mechanism 100 close to the first housing 300. The first shielding plate 4a can be flush with the first housing 300, and the electronic device 1000 has a higher aesthetics and integrity.

[0279] like Fig.39 As shown, the second shielding plate 4b is connected to the folding mechanism 100. For example, the second shielding plate 4b can be connected to the second connecting arm 24 (see Fig.36 ) of the fourth connection terminal 242 (see Fig.36 ) is fixedly connected. Exemplarily, a portion of the second shielding plate 4b shields the side of the folding mechanism 100 close to the second housing 400. The second shielding plate 4b can be flush with the second housing 400, and the electronic device 1000 has a higher aesthetics and integrity.

[0280] It can be understood that when the folding mechanism is in a flattened state, the first shielding plate 4a and the second shielding plate 4b are located on the same side of the first fixed frame 21, the main shaft 1 and the second fixed frame 22, and the first shielding plate 4a and the second shielding plate 4b jointly cover the first fixed frame 21, the main shaft 1 and the second fixed frame 22.

[0281] like Fig.39 As shown, the second shielding plate 4b is provided with a second avoidance hole 41b. The second avoidance hole 41b is provided through the second shielding plate 4b.

[0282] For example, the second avoidance hole 41b and the first avoidance hole 123 of the upper cover 12 (see Fig.26 ) relative settings.

[0283] Exemplarily, a portion of the push portion 2513 of the first latch 251 passes through the second avoidance hole 41b of the second shielding plate 4b and extends to the side of the second shielding plate 4b away from the main shaft 1. That is, a portion of the push portion 2513 of the first latch 251 extends to the outside of the electronic device 1000. It can be understood that when the user pulls the push portion 2513 of the first latch 251, the push portion 2513 that partially extends to the outside of the electronic device 1000 is more convenient to operate, and the user can switch between the unlocked state and the locked state of the electronic device 1000 more easily and accurately, which is applicable to a wider range of people and provides a better user experience.

[0284] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other, and any combination of features in different embodiments is also within the protection scope of the present application. In other words, the multiple embodiments described above can also be arbitrarily combined according to actual needs.

[0285] It should be noted that all the above drawings are illustrative illustrations of the present application and do not represent the actual size of the product. And the dimensional ratio relationship between the components in the drawings does not serve as a limitation on the actual product of the present application. The above are only some embodiments and implementation methods of the present application. The scope of protection of the present application is not limited to this. Any technician familiar with the field can easily think of changes or replacements within the technical scope disclosed in the present application, which should be covered within the scope of protection of the present application. Therefore, the scope of protection of the present application shall be based on the scope of protection of the claims.

Claims

1. A folding mechanism (100), characterized in that: It comprises a main shaft (1), a first fixing frame (21), a second fixing frame (22), a first connecting arm (23), a second connecting arm (24) and a first latch (251), wherein the main shaft (1) is located between the first fixing frame (21) and the second fixing frame (22); The first connecting arm (23) comprises a first connecting end (231) and a second connecting end (232), the first connecting end (231) being connected to the main shaft (1), the second connecting end (232) being connected to the first fixing frame (21), and the first connecting end (231) being provided with a first slot (2311); The second connecting arm (24) comprises a third connecting end (241) and a fourth connecting end (242), the third connecting end (241) being connected to the main shaft (1), and the fourth connecting end (242) being connected to the second fixing frame (22); The first latch (251) is located on the main shaft (1) and is movably connected to the main shaft (1); the first latch (251) is used to be inserted into the first slot (2311) when the folding mechanism (100) is in a flattened state.

2. The folding mechanism (100) according to claim 1, characterized in that: The third connection end (241) is provided with a second slot (2411); The folding mechanism (100) comprises a second latch (252), the second latch (252) being located on the main shaft (1) and spaced apart from the first latch (251), the second latch (252) being movably connected to the main shaft (1), and the second latch (252) being configured to be inserted into the second slot (2411) when the folding mechanism (100) is in a flattened state.

3. The folding mechanism (100) according to claim 2, characterized in that: The first latch (251) has a first meshing portion (2514), and the second latch (252) has a second meshing portion (2524); The folding mechanism (100) comprises a synchronous gear (253), wherein the synchronous gear (253) is located on the main shaft (1) and is rotationally connected to the main shaft (1), and the second meshing portion (2524) meshes with the first meshing portion (2514) through the synchronous gear (253).

4. The folding mechanism (100) according to claim 3, characterized in that: The first latch (251) has a first limiting portion (2515), the second latch (252) has a second limiting portion (2525), a portion of the synchronous gear (253) is located between the first limiting portion (2515) and the main shaft (1), and a portion of the synchronous gear (253) is located between the second limiting portion (2525) and the main shaft (1).

5. The folding mechanism (100) according to any one of claims 2 to 4, characterized in that: The first connection end (231) and the third connection end (241) are arranged along a first direction, the first latch pin (251) and the second latch pin (252) are located between the first connection end (231) and the third connection end (241), and the first latch pin (251) and the second latch pin (252) are arranged along a second direction, the first direction is a length extension direction of the main axis (1), and the second direction intersects with the first direction.

6. The folding mechanism (100) according to claim 3 or 4, characterized in that: The main shaft (1) comprises a base (11) and an upper cover (12), wherein the upper cover (12) is fixed to the base (11), and a portion of the base (11) and a portion of the upper cover (12) enclose a receiving space (150); The first latch pin (251), the second latch pin (252) and the synchronous gear (253) are all located in the accommodating space (150).

7. The folding mechanism (100) according to claim 6, characterized in that: The upper cover (12) is provided with a first avoidance hole (123), the first avoidance hole (123) passes through the upper cover (12), and the first avoidance hole (123) is connected to the accommodating space (150); The first latch (251) has a pushing portion (2513), a portion of which passes through the first avoidance hole (123) from the accommodating space (150) and extends to the outside of the main shaft (1).

8. The folding mechanism (100) according to claim 7, characterized in that: The folding mechanism (100) further comprises a first shielding plate (4a) and a second shielding plate (4b), wherein the first shielding plate (4a) is fixedly connected to the second connecting end (232), and the second shielding plate (4b) is fixedly connected to the fourth connecting end (242); When the folding mechanism (100) is in a flattened state, the first shielding plate (4a) and the second shielding plate (4b) are located on the same side of the first fixing frame (21), the main shaft (1) and the second fixing frame (22), and the first shielding plate (4a) and the second shielding plate (4b) jointly cover the first fixing frame (21), the main shaft (1) and the second fixing frame (22); The second shielding plate (4b) is provided with a second avoidance hole (41b), and the second avoidance hole (41b) is arranged opposite to the first avoidance hole (123) of the upper cover (12), and the pushing portion (2513) passes through the second avoidance hole (41b) of the second shielding plate (4b) and extends to a side of the second shielding plate (4b) away from the main shaft (1).

9. The folding mechanism (100) according to claim 6, characterized in that: The folding mechanism (100) further comprises a spring sheet (254), the spring sheet (254) comprising a first straight portion (2541), a bent portion (2542) and a second straight portion (2543), the first straight portion (2541) and the second straight portion (2543) both being fixed to a side of the upper cover (12) facing the accommodating space (150), and the bent portion (2542) protruding in a direction close to the second latch (252); The second latch (252) has a convex portion (2523); When the first latch (251) is inserted into the first slot (2311), the protrusion (2523) of the second latch (252) is located on a side of the bent portion (2542) of the spring sheet (254) close to the third connection end (241); When the first latch (251) is separated from the first slot (2311), the protrusion (2523) of the second latch (252) is located on a side of the bent portion (2542) of the spring sheet (254) away from the third connection end (241).

10. The folding mechanism (100) according to claim 9, characterized in that: The main shaft (1) is provided with a receiving groove (125), and at least a portion of the elastic sheet (254) is located in the receiving groove (125).

11. The folding mechanism (100) according to claim 6, characterized in that: The base (11) has a rotating shaft (116), the rotating shaft (116) is located in the accommodating space (150), and the synchronous gear (253) is sleeved on the rotating shaft (116) and rotatably connected to the rotating shaft (116).

12. The folding mechanism (100) according to any one of claims 6 to 11, characterized in that: The base (11) is provided with a first groove (111a), the bottom wall of the first groove (111a) is an arc-shaped surface, the bottom surface of the upper cover (12) includes a first arc-shaped surface (121), and the first groove (111a) and the first arc-shaped surface (121) form a first arc-shaped groove (13); The first connecting end (231) is in an arc shape, and the first connecting end (231) is located in the first arc groove (13).

13. The folding mechanism (100) according to claim 12, characterized in that: The bottom wall of the first groove (111a) is provided with a first avoidance groove (113); When the folding mechanism (100) is in a flattened state, the first avoidance groove (113) is arranged opposite to the first insertion slot (2311), and a portion of the first latch pin (251) can be inserted into the first avoidance groove (113).

14. The folding mechanism (100) according to any one of claims 1 to 13, characterized in that: The second connecting end (232) is slidably connected to the first fixing frame (21); The folding mechanism (100) comprises a first bracket (261a) and a first elastic member (262a), wherein the first bracket (261a) is located on the first fixing bracket (21) and is slidably connected to the first fixing bracket (21), and the first bracket (261a) is abutted against the second connecting end (232); The first elastic member (262a) is located on the first fixing frame (21), and one end of the first elastic member (262a) is abutted against the first bracket (261a), and the other end is abutted against the first fixing frame (21), and the first elastic member (262a) is used to apply a damping force to the second connecting end (232) through the first bracket (261a).

15. The folding mechanism (100) according to claim 14, characterized in that: The first bracket (261a) comprises a first abutting block (264a) and a plurality of fixing columns (263a), wherein the plurality of first fixing columns (263a) are fixed at intervals on one side of the first abutting block (264a), and the first abutting block (264a) abuts against the second connecting end (232); The first elastic member (262a) comprises a plurality of springs, and the plurality of springs are sleeved on the plurality of first fixing pillars (263a) in a one-to-one correspondence.

16. An electronic device (1000), characterized in that: The invention comprises a first shell (300), a second shell (400), a flexible screen (200), and a folding mechanism (100) according to any one of claims 1 to 15, wherein the first fixing frame (21) is fixedly connected to the first shell (300), and the second fixing frame (22) is fixedly connected to the second shell (400); The flexible screen (200) comprises a first display area (201), a second display area (202), and a third display area (203) which are connected in sequence; the first display area (201) is fixed to the first shell (300), and the third display area (203) is fixed to the second shell (400).

17. An electronic device (1000), characterized in that: The invention comprises a folding mechanism (100), a first shell (300) and a second shell (400), wherein the folding mechanism (100) connects the first shell (300) and the second shell (400), and the folding mechanism (100) is used to enable the first shell (300) and the second shell (400) to be relatively unfolded and closed; The folding mechanism (100) comprises a main shaft (1), a first connecting arm (23) and a first latch (251); The first connecting arm (23) comprises a first connecting end (231) and a second connecting end (232), the first connecting end (231) being connected to the main shaft (1), the second connecting end (232) being connected to the first housing (300), and the first connecting end (231) being provided with a first slot (2311); The first latch (251) is located on the main shaft (1) and is movably connected to the main shaft (1); the first latch (251) is used to be inserted into the first slot (2311) when the electronic device (1000) is in a flattened state.

18. The electronic device (1000) according to claim 17, characterized in that: The folding mechanism (100) comprises a second connecting arm (24) and a second latch (252); The second connecting arm (24) comprises a third connecting end (241) and a fourth connecting end (242), the third connecting end (241) being connected to the main shaft (1), the fourth connecting end (242) being connected to the second housing (400), and the third connecting end (241) being provided with a second slot (2411); The second latch (252) is located on the main shaft (1) and is spaced apart from the first latch (251); the second latch (252) is movably connected to the main shaft (1); and the second latch (252) is used to be inserted into the second slot (2411) when the electronic device (1000) is in a flattened state.

19. The electronic device (1000) according to claim 18, characterized in that: The first latch (251) has a first meshing portion (2514), and the second latch (252) has a second meshing portion (2524); The folding mechanism (100) comprises a synchronous gear (253), wherein the synchronous gear (253) is located on the main shaft (1) and is rotationally connected to the main shaft (1), and the second meshing portion (2524) meshes with the first meshing portion (2514) through the synchronous gear (253).

20. The electronic device (1000) according to claim 18 or 19, characterized in that: The first connection end (231) and the third connection end (241) are arranged along a first direction, the first latch pin (251) and the second latch pin (252) are located between the first connection end (231) and the third connection end (241), and the first latch pin (251) and the second latch pin (252) are arranged along a second direction, the first direction is a length extension direction of the main axis (1), and the second direction intersects with the first direction.

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