Folding mechanism and electronic device

Abstract

Provided in the present application are a folding mechanism and an electronic device. A main shaft is located between a first fixing support and a second fixing support; a first support plate is rotatably connected to the main shaft, and a third support plate is rotatably connected to the first support plate and the first fixing support; a rotary end of a first connecting member is rotatably connected to the main shaft, a sliding end of the first connecting member is slidably connected to the first fixing support, and a connecting section of the first connecting member is connected to the first support plate by means of a first rotation pair; a second support plate is rotatably connected to the main shaft, and a fourth support plate is rotatably connected to the second support plate and the second fixing support; and a rotary end of a second connecting member is rotatably connected to the main shaft, a sliding end of the second connecting member is slidably connected to the second fixing support, and a connecting section of the second connecting member is connected to the second support plate by means of a second rotation pair. By means of the folding mechanism, the action of folding a flexible screen is stable, and a relatively small squeezing force is produced, helping to reduce the risk of the flexible screen being damaged due to excessive squeezing by the folding mechanism, and enabling relatively high reliability of the flexible screen.

Description

Folding mechanism and electronic device

[0001] The present application claims priority to the Chinese patent application No. 202410798988.4, filed on June 19, 2024, with the State Intellectual Property Office of China, and the Chinese patent application No. 202410798988.4 has the title of "Folding mechanism and electronic device", the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] The present application relates to the technical field of foldable electronic products, and in particular to a folding mechanism and an electronic device. BACKGROUND

[0003] In recent years, flexible screens are widely used in various foldable electronic devices due to their characteristics of being thin, light and not easy to break. The foldable electronic device also includes a housing device for carrying the flexible screen. The housing device generally includes two housings and a folding mechanism connected between the two housings. The two housings are relatively folded or unfolded through the deformation of the folding mechanism, and the flexible screen is folded or unfolded. In the traditional screen-in folding electronic device, when the electronic device is folded, the flexible screen is folded on the inner side of the housing device, and the bending part of the flexible screen is easily damaged due to being excessively pressed by the folding mechanism, resulting in poor reliability and short service life of the flexible screen. SUMMARY

[0004] The present application provides a folding mechanism and an electronic device. The folding mechanism is applied to a housing device of an electronic device and is used to connect two housings of the housing device. The housing device is used to carry a flexible screen. During the folding process of the housing device, the folding mechanism of the housing device can automatically avoid forming an accommodation space. The folding action of the housing device on the flexible screen is stable and the pressing force is small, which is conducive to reducing the risk of damage to the flexible screen due to excessive pressing by the folding mechanism, so that the reliability of the flexible screen is high.

[0005] In a 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 support plate, a second support plate, a third support plate, a fourth support plate, a first connecting piece, a second connecting piece, a first revolute pair and a second revolute pair, and the main shaft is located between the first fixed frame and the second fixed frame.

[0006] The first support plate is rotationally connected to the main shaft, and the third support plate is rotationally connected to the first support plate and the first fixed frame.

[0007] The first connecting piece includes a rotating end, a connecting section and a sliding end connected in sequence. The rotating end of the first connecting piece is rotationally connected to the main shaft, the sliding end of the first connecting piece is slidingly connected to the first fixed frame, and the connecting section of the first connecting piece is connected to the first support plate through the first revolute pair.

[0008] The second support plate is rotationally connected with the main shaft, and the fourth support plate is rotationally connected with the second support plate and the second fixed frame.

[0009] The second connecting piece comprises a rotation end, a connecting section and a sliding end connected in sequence. The rotation end of the second connecting piece is rotationally connected with the main shaft, the sliding end of the second connecting piece is slidingly connected with the second fixed frame, and the connecting section of the second connecting piece is connected with the second support plate through the second rotation pair.

[0010] It can be understood that the folding mechanism can be a crank slider linkage mechanism. The main motion of the folding mechanism can be composed of a primary motion and a secondary motion. The primary motion can be a motion mode of a four-bar linkage mechanism composed of the main shaft, the first support plate, the first connecting piece and the first rotation pair. In addition, the secondary motion can be a motion mode of a slider linkage mechanism composed of the first fixed frame, the third support plate, the first support plate and the first rotation pair. The folding mechanism can pass through the primary motion and the secondary motion, so that the freedom of the first fixed frame relative to the main shaft can be 1 during the unfolding or folding process of the folding mechanism, so that the motion trajectory of the first fixed frame relative to the main shaft can be determined. Specifically, during the unfolding or folding process of the folding mechanism, the motion mode of the first support plate, the third support plate, the first connecting piece and the first rotation pair can constrain the motion trajectory of the first fixed frame, so that the motion trajectory of the first fixed frame relative to the main shaft can be determined. In this way, during the change from the unfolded state to the folded state of the folding mechanism, the first support plate, the third support plate, the first connecting piece and the first rotation pair can pull the first fixed frame back to be close to the main shaft. During the change from the folded state to the unfolded state of the folding mechanism, the first support plate, the third support plate, the first connecting piece and the first rotation pair can push the first fixed frame away from the main shaft.

[0011] Similarly, the second support plate is rotationally connected with the main shaft, the fourth support plate is rotationally connected with the second support plate, the fourth support plate is rotationally connected with the second fixed frame, the rotating end of the second connecting piece is rotationally connected with the main shaft, the sliding end of the second connecting piece is slidingly connected with the second fixed frame, and the second support plate is further rotationally connected with the second connecting piece through the second rotational pair. At this time, the main shaft, the second support plate, the second connecting piece, and the second rotational pair form a four-bar linkage mechanism, and the movement mode of the four-bar linkage mechanism can also form a first-order movement of the folding mechanism. The second support plate, the fourth support plate, the second fixed frame, and the second rotational pair form a slider linkage mechanism, and the movement mode of the slider linkage mechanism can also form a second-order movement of the folding mechanism. At this time, the folding mechanism can be moved through the first-order movement and the second-order movement, so that the degree of freedom of the second fixed frame relative to the main shaft during the unfolding or folding of the folding mechanism can be 1, and the movement trajectory of the second fixed frame relative to the main shaft can be determined. In this way, during the change from the flat state to the folded state of the folding mechanism, the second support plate, the fourth support plate, the second connecting piece, and the second rotational pair can pull the second fixed frame back to be close to the main shaft. During the change from the folded state to the flat state of the folding mechanism, the second support plate, the fourth support plate, the second connecting piece, and the second rotational pair can push the second fixed frame away from the main shaft.

[0012] In a possible implementation, when the folding mechanism is in the flat state, the third support plate, the first support plate, the second support plate, and the fourth support plate are sequentially spliced and jointly form a support surface.

[0013] When the folding mechanism is in the folded state, the first support plate and the second support plate are arranged opposite to each other, the third support plate and the fourth support plate are arranged opposite to each other, and the main shaft, the first support plate, the second support plate, the third support plate, and the fourth support plate enclose an accommodation space.

[0014] It can be understood that, when the folding mechanism is in the flat state, the first support plate, the second support plate, the third support plate, and the fourth support plate can jointly form a support surface, so that when the folding mechanism is applied to an electronic device, the support surface can support the second display area of the flexible screen. At this time, the flexible screen is not prone to problems such as depression under the pressing of a user, which is beneficial to improving the service life and reliability of the flexible screen, and can also make the light and shadow of the flexible screen better. Therefore, the product competitiveness of the folding mechanism of the embodiment is better.

[0015] It can be understood that, in an embodiment, when the folding mechanism is in the unfolded state, the first support plate, the second support plate and the main shaft jointly form a support surface for supporting the second display area of the flexible screen. In this scheme, since the main shaft needs to be connected with the first support plate and the second support plate through a plurality of connecting members, the main shaft needs to be provided with a plurality of avoiding spaces for avoiding the connecting members or other components. The avoiding spaces can be grooves or through holes. In this way, the surface of the main shaft for forming the support surface is prone to pits, that is, the flatness of the support surface is poor. At this time, the flexible screen is prone to be depressed under the pressing of the user, thereby causing the flexible screen to fail and other problems, which is not conducive to improving the service life and reliability of the flexible screen. In the present embodiment, when the folding mechanism is in the unfolded state, the first support plate, the second support plate, the third support plate and the fourth support plate of the folding mechanism can jointly splice into a support surface for supporting the second display area of the flexible screen. At this time, the present embodiment can no longer support the second display area of the flexible screen through the main shaft, thereby avoiding the problem that the poor flatness of the main shaft causes the flexible screen to fail and other problems. In other words, the service life and reliability of the flexible screen of the electronic device in the unfolded state are both better.

[0016] In the present embodiment, since the first support plate, the second support plate, the third support plate and the fourth support plate have fewer connection positions with other structures and the part fitting relationship is relatively simple, the first support plate, the second support plate, the third support plate and the fourth support plate have fewer holes and the structure is relatively regular. In this way, the support surface jointly formed by the first support plate, the second support plate, the third support plate and the fourth support plate has fewer holes and the gap between adjacent two support plates is small, thereby being conducive to the flatness of the support surface and further being conducive to improving the service life and reliability of the flexible screen.

[0017] It can be understood that, when the folding mechanism is in the folded state, the first support plate, the second support plate, the third support plate and the fourth support plate can jointly form an accommodating space with the main shaft for accommodating the second display area of the flexible screen when the folding mechanism is applied to the electronic device. It can be understood that, in the folding process of the folding mechanism, the first support plate, the second support plate, the third support plate and the fourth support plate can automatically avoid to form the accommodating space. The first support plate, the second support plate, the third support plate and the fourth support plate can stably fold the flexible screen and have small extrusion force, thereby being conducive to reducing the risk of damage of the flexible screen due to excessive extrusion of the folding mechanism and making the reliability of the flexible screen higher.

[0018] Exemplarily, when the folding mechanism is in the folded state, the first support plate, the second support plate, the third support plate and the fourth support plate can stably support the second display area of the flexible screen, so as to reduce the damage risk of the flexible screen due to freedom, and further improve the service life and reliability of the flexible screen. Therefore, the product competitiveness of the folding mechanism of the embodiment is better.

[0019] In a possible implementation, when the folding mechanism is in the folded state, the first support plate and the second support plate are both arranged to be inclined relative to the main shaft, and the first support plate and the second support plate are close to each other in the direction close to the main shaft, and the third support plate and the fourth support plate are also arranged to be inclined relative to the main shaft, and the third support plate and the fourth support plate are close to each other in the direction away from the main shaft. In this way, during the folding process of the folding mechanism, the volume of the containing space is larger, and the first support plate, the second support plate, the third support plate and the fourth support plate can stably support the folding action of the flexible screen with smaller extrusion force, thereby being conducive to reducing the risk of damage of the flexible screen due to excessive extrusion of the folding mechanism, and making the reliability of the flexible screen higher.

[0020] In a possible implementation, when the folding mechanism is in the unfolded state, the first support plate and the second support plate jointly cover the whole of the main shaft.

[0021] When the folding mechanism is in the folded state, the first support plate and the second support plate cover two side portions of the main shaft respectively.

[0022] It can be understood that when the folding mechanism is in the unfolded state, the first support plate and the second support plate jointly cover the whole of the main shaft. In this way, the first support plate and the second support plate are arranged more compactly, thereby being conducive to the miniaturization of the folding mechanism.

[0023] It can be understood that when the folding mechanism is in the folded state, the first support plate and the second support plate cover two side portions of the main shaft respectively. In this way, compared with the scheme that when the folding mechanism is in the folded state, the first support plate and the second support plate do not cover the two side portions of the main shaft, the first support plate and the second support plate of the embodiment are arranged more compactly, thereby being conducive to the miniaturization of the folding mechanism.

[0024] In a possible implementation, the rotation axis of the first rotation pair to which the first support plate is rotationally connected and the rotation axis of the first support plate to which the third support plate is rotationally connected are in the same straight line. In this way, the third support plate can be connected to the first rotation pair through the first support plate. It can be understood that compared with the scheme that other connection structures are arranged to connect the third support plate to the first rotation pair through the first support plate, the embodiment arranges the rotation axis of the first rotation pair to which the first support plate is rotationally connected and the rotation axis of the first support plate to which the third support plate is rotationally connected to be in the same straight line, which is simple in assembly and can save parts to simplify the structure.

[0025] In a possible implementation, the main shaft is bent to form the inner space, and the main shaft is further provided with a first arc-shaped groove, and the first arc-shaped groove of the main shaft is in communication with the inner space;

[0026] The first support plate comprises a first support plate body and an arc-shaped block.

[0027] The arc-shaped block of the first support plate is arranged in the first arc-shaped groove of the main shaft and can rotate in the first arc-shaped groove of the main shaft; and at least part of the first support plate body is arranged in the inner space and can rotate in the inner space.

[0028] It can be understood that the arc-shaped block of the first support plate is arranged in the first arc-shaped groove of the main shaft. Through the relative movement of the two, the first support plate and the main shaft are connected through the arc-shaped block and the arc-shaped groove to form a rotating connection structure, that is, the first support plate and the main shaft can be connected through a virtual shaft. The structure connected through the virtual shaft is simple and occupies small space, which is beneficial to reduce the thickness of the folding mechanism and make the folding mechanism and the electronic device more easily achieve light and thin.

[0029] It can be understood that at least part of the first support plate body is arranged in the inner space, which is beneficial to reduce the thickness of the folding mechanism and make the folding mechanism and the electronic device more easily achieve light and thin.

[0030] In a possible implementation, the first support plate body comprises a bottom surface and a first end surface, the first end surface of the first support plate body is connected to the bottom surface of the first support plate body, and the bottom surface of the first support plate body faces the main shaft when the folding mechanism is in the unfolded state.

[0031] The first support plate body is provided with a avoiding space, the avoiding space forms an opening on the bottom surface of the first support plate body, and the avoiding space comprises a first wall surface, and the first wall surface of the avoiding space is arranged away from the first end surface of the first support plate body.

[0032] The number of the arc-shaped blocks of the first support plate is at least two, one arc-shaped block of the first support plate is protruded from the first end surface of the first support plate body, and one arc-shaped block of the first support plate is protruded from the first wall surface of the avoiding space.

[0033] It can be understood that the arrangement between the two arc-shaped blocks of the first support plate is relatively compact, which is beneficial to the miniaturization of the folding mechanism.

[0034] In a possible implementation, the first support plate is provided with a first rotating space, the first rotating space of the first support plate is located on a side of the arc-shaped block of the first support plate away from the main shaft, the first rotating space of the first support plate comprises a first side wall and a second side wall arranged oppositely, and the first side wall and the second side wall of the first rotating space of the first support plate are both provided with a rotating shaft hole.

[0035] The third support plate comprises a rotating shaft block, and the rotating shaft block of the third support plate is provided with a rotating shaft hole;

[0036] The folding mechanism further comprises a first rotating shaft, the first rotating shaft sequentially passes through the rotating shaft hole of the first side wall of the first rotating space of the first support plate, the rotating shaft hole of the rotating shaft block of the third support plate, and the rotating shaft hole of the second side wall of the first rotating space of the first support plate.

[0037] It can be understood that the first support plate and the third support plate can also be connected through a solid shaft. At this time, the connection between the first support plate and the third support plate is reliable, the virtual position of rotation is small, and the rotation action is accurate and stable.

[0038] In a possible implementation, the first rotating pair comprises a bracket, a first pin shaft, and a second pin shaft, the bracket is provided with a first pin shaft hole and a second pin shaft hole arranged at intervals;

[0039] The connecting section of the first connecting piece is provided with a rotating space, the rotating space of the first connecting piece comprises a first side wall and a second side wall arranged oppositely, and the first side wall and the second side wall of the rotating space of the first connecting piece are both provided with a rotating shaft hole;

[0040] Part of the bracket is located in the rotating space of the connecting section of the first connecting piece, the first pin shaft sequentially passes through the rotating shaft hole of the first side wall of the rotating space of the first connecting piece, the first pin shaft hole of the bracket, and the rotating shaft hole of the second side wall of the rotating space of the first connecting piece;

[0041] The first support plate is further provided with a second rotating space, the second rotating space of the first support plate comprises a first side wall and a second side wall arranged oppositely, and the first side wall and the second side wall of the second rotating space of the first support plate are both provided with a rotating shaft hole;

[0042] Part of the bracket is located in the second rotating space of the first support plate, the second pin shaft sequentially passes through the rotating shaft hole of the first side wall of the second rotating space of the first support plate, the second pin shaft hole of the bracket, and the rotating shaft hole of the second side wall of the second rotating space of the first support plate.

[0043] It can be understood that the structure of the first rotating pair of the embodiment is relatively simple.

[0044] In a possible implementation, the connecting section of the first connecting piece comprises a first part and a second part, the first part connects the rotating end of the first connecting piece and the sliding end of the first connecting piece, the second part protrudes relative to one side of the rotating end of the first connecting piece; and the rotating space of the first connecting piece is arranged on the second part.

[0045] It can be understood that the structure of the first connecting piece of the embodiment is relatively simple.

[0046] In a possible implementation, the third support plate comprises an arc-shaped block, and the first fixing frame is provided with an arc-shaped slot; the arc-shaped block of the third support plate is arranged in the arc-shaped slot of the first fixing frame and can rotate in the arc-shaped slot of the first fixing frame.

[0047] It can be understood that the third support plate and the first fixing frame can be connected through a virtual shaft. The virtual shaft connection structure is simple, occupies small space, and is beneficial to reduce the thickness of the folding mechanism, so that the folding mechanism and the electronic device are more easily thinned.

[0048] In a possible implementation, the first support plate is further connected to the first fixing frame in a sliding manner, and / or the second support plate is further connected to the second fixing frame in a sliding manner.

[0049] It can be understood that by setting the first support plate to be further connected to the first fixing frame in a sliding manner, the movement mode of the first support plate, the third support plate, the first connecting member and the first rotary pair can better constrain the movement track of the first fixing frame during unfolding or folding of the folding mechanism, so that the movement track of the first fixing frame relative to the main shaft is more accurate. In this way, when the folding mechanism is applied to the electronic device, the first support plate, the second support plate, the third support plate and the fourth support plate can stably fold the flexible screen with small extrusion force, thereby being beneficial to reduce the risk of damage of the flexible screen due to excessive extrusion of the folding mechanism, and making the reliability of the flexible screen higher.

[0050] It can be understood that by setting the second support plate to be further connected to the second fixing frame in a sliding manner, the movement mode of the second support plate, the fourth support plate, the second connecting member and the second rotary pair can better constrain the movement track of the second fixing frame during unfolding or folding of the folding mechanism, so that the movement track of the second fixing frame relative to the main shaft is more accurate. In this way, when the folding mechanism is applied to the electronic device, the first support plate, the second support plate, the third support plate and the fourth support plate can stably fold the flexible screen with small extrusion force, thereby being beneficial to reduce the risk of damage of the flexible screen due to excessive extrusion of the folding mechanism, and making the reliability of the flexible screen higher.

[0051] In a possible implementation, the first support plate comprises a sliding block, and the first fixing frame is provided with a second sliding slot; the sliding block of the first support plate is arranged in the second sliding slot of the first fixing frame and can slide in the second sliding slot of the first fixing frame.

[0052] It can be understood that the sliding block of the first support plate is arranged in the second sliding slot of the first fixing frame. Through relative movement of the two, the first support plate and the first fixing frame form a sliding connection structure through cooperation of the sliding block and the sliding slot. The sliding connection structure of the present embodiment is relatively simple.

[0053] In a possible implementation, the first fixing frame comprises a first side facing the main shaft, and the second sliding groove of the first fixing frame is arranged obliquely relative to the first side of the first fixing frame.

[0054] It can be understood that, by arranging the second sliding groove of the first fixing frame obliquely relative to the first side of the first fixing frame, when the first fixing frame cooperates with the first support plate, the first fixing frame and the first support plate can form a cooperation structure of oblique sliding grooves, and thus when the electronic device falls or collides, the pressure applied by the first shell to the first fixing frame. At this time, the first fixing frame can distribute the energy of the falling impact to the first support plate and the main shaft. In this way, the folding mechanism has better falling impact performance, thereby facilitating improvement of the service life and reliability of the electronic device.

[0055] In a possible implementation, the first support plate is further rotationally connected to the first fixing frame, and / or the second support plate is further rotationally connected to the second fixing frame.

[0056] It can be understood that, by arranging the first support plate to be further rotationally connected to the first fixing frame, the movement mode of the first support plate, the third support plate, the first connecting member and the first rotation pair can better constrain the movement track of the first fixing frame during unfolding or folding of the folding mechanism, so that the movement track of the first fixing frame relative to the main shaft is more accurate. In this way, when the folding mechanism is applied to the electronic device, the first support plate, the second support plate, the third support plate and the fourth support plate can stably fold the flexible screen with smaller extrusion force, thereby facilitating reduction of the risk of damage of the flexible screen due to excessive extrusion of the folding mechanism, and making the reliability of the flexible screen higher.

[0057] It can be understood that, by arranging the second support plate to be further rotationally connected to the second fixing frame, the movement mode of the second support plate, the fourth support plate, the second connecting member and the second rotation pair can better constrain the movement track of the second fixing frame during unfolding or folding of the folding mechanism, so that the movement track of the second fixing frame relative to the main shaft is more accurate. In this way, when the folding mechanism is applied to the electronic device, the first support plate, the second support plate, the third support plate and the fourth support plate can stably fold the flexible screen with smaller extrusion force, thereby facilitating reduction of the risk of damage of the flexible screen due to excessive extrusion of the folding mechanism, and making the reliability of the flexible screen higher.

[0058] In a second aspect, the application provides a folding mechanism. The folding mechanism comprises a main shaft, a first fixed frame, a second fixed frame, a first support plate, a second support plate, a third support plate, a fourth support plate, a first connecting member and a second connecting member. The main shaft is located between the first fixed frame and the second fixed frame. The first support plate is rotationally connected to the main shaft and is slidingly connected or rotationally connected to the first fixed frame. The third support plate is rotationally connected to the first support plate and the first fixed frame. The first connecting member comprises a rotating end and a sliding end. The rotating end of the first connecting member is rotationally connected to the main shaft. The sliding end of the first connecting member is slidingly connected to the first fixed frame. The second support plate is rotationally connected to the main shaft and is slidingly connected or rotationally connected to the second fixed frame. The fourth support plate is rotationally connected to the second support plate and the second fixed frame. The second connecting member comprises a rotating end and a sliding end. The rotating end of the second connecting member is rotationally connected to the main shaft. The sliding end of the second connecting member is slidingly connected to the second fixed frame.

[0059] It can be understood that the folding mechanism can be a slider-crank mechanism. The main motion of the folding mechanism can be composed of a primary motion and a secondary motion. The primary motion can be the motion mode of the slider-crank mechanism composed of the main shaft, the first support plate, the first connecting member and the first fixed frame. In addition, the secondary motion can be the motion mode of the slider-crank mechanism composed of the first support plate, the third support plate and the first fixed frame. The folding mechanism can pass through the primary motion and the secondary motion, so that the freedom of the first fixed frame relative to the main shaft is 1 during the unfolding or folding process of the folding mechanism, so that the motion trajectory of the first fixed frame relative to the main shaft can be determined. Specifically, during the unfolding or folding process of the folding mechanism, the motion mode of the first support plate, the third support plate and the first connecting member can constrain the motion trajectory of the first fixed frame, so that the motion trajectory of the first fixed frame relative to the main shaft can be determined. In this way, during the change from the flat state to the folded state of the folding mechanism, the first support plate, the third support plate and the first connecting member can pull the first fixed frame back to be close to the main shaft. During the change from the folded state to the flat state of the folding mechanism, the first support plate, the third support plate and the first connecting member can push the first fixed frame away from the main shaft.

[0060] It can be understood that, during the unfolding or folding process of the folding mechanism, the motion mode of the second support plate, the fourth support plate and the second connecting member can constrain the motion trajectory of the second fixed frame, so that the motion trajectory of the second fixed frame relative to the main shaft can be determined. In this way, during the change from the flat state to the folded state of the folding mechanism, the second support plate, the fourth support plate and the second connecting member can pull the second fixed frame back to be close to the main shaft. During the change from the folded state to the flat state of the folding mechanism, the second support plate, the fourth support plate and the second connecting member can push the second fixed frame away from the main shaft.

[0061] It can be understood that the folding mechanism of the embodiment realizes the connection between the first fixing frame and the main shaft, the connection between the second fixing frame and the main shaft through the connecting rod slider structure and the connecting rod structure, has a small number of component parts, simple cooperation relationship and cooperation position, and is easy to manufacture and assemble, thereby being beneficial to realize mass production.

[0062] In a possible implementation, when the folding mechanism is in the unfolded state, the third support plate, the first support plate, the second support plate and the fourth support plate are sequentially spliced and jointly form a support surface.

[0063] When the folding mechanism is in the folded state, the first support plate and the second support plate are oppositely arranged, the third support plate and the fourth support plate are oppositely arranged, and the main shaft, the first support plate, the second support plate, the third support plate and the fourth support plate enclose an accommodation space.

[0064] It can be understood that when the folding mechanism is in the unfolded state, the first support plate, the second support plate, the third support plate and the fourth support plate can jointly form a support surface, so that when the folding mechanism is applied to the electronic device, the support surface can support the second display area of the flexible screen. At this time, the flexible screen is not prone to problems such as indentation under the pressing of the user, which is beneficial to improve the service life and reliability of the flexible screen, and can also make the light and shadow of the flexible screen better. Therefore, the product competitiveness of the folding mechanism of the embodiment is better.

[0065] It can be understood that in an embodiment, when the folding mechanism is in the unfolded state, the first support plate, the second support plate and the main shaft jointly form a support surface to support the second display area of the flexible screen. In this scheme, since the main shaft needs to be connected to the first support plate and the second support plate through a plurality of connecting pieces, the main shaft needs to be provided with a plurality of avoiding spaces to avoid the connecting pieces or other components. The avoiding space can be a groove or a through hole. In this way, the surface of the main shaft for forming the support surface is prone to pits, that is, the flatness of the support surface is poor. At this time, the flexible screen is prone to indentation under the pressing of the user, thereby causing problems such as failure of the flexible screen, which is not conducive to improving the service life and reliability of the flexible screen. In the embodiment, when the folding mechanism is in the unfolded state, the first support plate, the second support plate, the third support plate and the fourth support plate of the folding mechanism can be spliced together to form a support surface to support the second display area of the flexible screen. At this time, the second display area of the flexible screen can be supported by the folding mechanism without the main shaft, thereby avoiding the problems such as failure of the flexible screen caused by poor flatness of the main shaft. In other words, the service life and reliability of the flexible screen of the electronic device of the embodiment in the unfolded state are better.

[0066] In the embodiment, the first support plate, the second support plate, the third support plate and the fourth support plate have fewer connection positions with other structures, and the part fitting relationship is relatively simple, so that the first support plate, the second support plate, the third support plate and the fourth support plate have fewer holes and a relatively regular structure. In this way, the first support plate, the second support plate, the third support plate and the fourth support plate together form a support surface with fewer holes and smaller gaps between adjacent support plates, thereby facilitating the flatness of the support surface, and further facilitating the improvement of the service life and reliability of the flexible screen.

[0067] In the embodiment, when the folding mechanism is in the folded state, the first support plate, the second support plate, the third support plate and the fourth support plate can form an accommodation space together with the main shaft, so as to accommodate the second display area of the flexible screen when the folding mechanism is applied to an electronic device. It can be understood that during the folding process of the folding mechanism, the first support plate, the second support plate, the third support plate and the fourth support plate can automatically avoid to form the accommodation space. Among them, the first support plate, the second support plate, the third support plate and the fourth support plate can stably support the folding action of the flexible screen with smaller extrusion force, thereby facilitating the reduction of the risk of damage to the flexible screen due to excessive extrusion of the folding mechanism, and making the reliability of the flexible screen higher.

[0068] Exemplarily, when the folding mechanism is in the folded state, the first support plate, the second support plate, the third support plate and the fourth support plate can stably support the second display area of the flexible screen, thereby reducing the damage risk of the flexible screen due to folding, and further improving the service life and reliability of the flexible screen. Therefore, the product competitiveness of the folding mechanism of the embodiment is better.

[0069] In a possible implementation, when the folding mechanism is in the folded state, the first support plate and the second support plate are both arranged obliquely relative to the main shaft, and the first support plate and the second support plate are close to each other in the direction close to the main shaft, and the third support plate and the fourth support plate are also arranged obliquely relative to the main shaft, and the third support plate and the fourth support plate are close to each other in the direction away from the main shaft. In this way, during the folding process of the folding mechanism, the volume of the accommodation space is larger, and the first support plate, the second support plate, the third support plate and the fourth support plate can stably support the folding action of the flexible screen with smaller extrusion force, thereby facilitating the reduction of the risk of damage to the flexible screen due to excessive extrusion of the folding mechanism, and making the reliability of the flexible screen higher.

[0070] In a possible implementation, when the folding mechanism is in the unfolded state, the first support plate and the second support plate together cover all of the main shaft;

[0071] When the folding mechanism is in the folded state, the first support plate and the second support plate cover two side portions of the main shaft respectively.

[0072] It can be understood that when the folding mechanism is in the unfolded state, the first support plate and the second support plate jointly cover the entire main shaft. In this way, the first support plate and the second support plate are arranged more compactly, thereby facilitating the miniaturization of the folding mechanism.

[0073] It can be understood that when the folding mechanism is in the folded state, the first support plate and the second support plate respectively cover two side portions of the main shaft. In this way, compared with the scheme in which the first support plate and the second support plate do not cover the two side portions of the main shaft when the folding mechanism is in the folded state, the first support plate and the second support plate of the embodiment are arranged more compactly, thereby facilitating the miniaturization of the folding mechanism.

[0074] In a possible implementation, the main shaft is bent to form an inner space, and the main shaft is further provided with a first arc-shaped groove, and the first arc-shaped groove of the main shaft communicates with the inner space;

[0075] The first support plate comprises a first support plate body and an arc-shaped block.

[0076] The arc-shaped block of the first support plate is arranged in the first arc-shaped groove of the main shaft and can rotate in the first arc-shaped groove of the main shaft; and at least part of the first support plate body is arranged in the inner space and can rotate in the inner space.

[0077] It can be understood that the arc-shaped block of the first support plate is arranged in the first arc-shaped groove of the main shaft. Through relative movement of the two, the first support plate and the main shaft form a rotating connection structure through cooperation of the arc-shaped block and the arc-shaped groove, that is, the first support plate and the main shaft can be rotatably connected through a virtual shaft. The structure of the virtual shaft rotating connection is simple, occupies small space, and is conducive to reducing the thickness of the folding mechanism, so that the folding mechanism and the electronic device are more easily realized to be light and thin.

[0078] It can be understood that at least part of the first support plate body is arranged in the inner space, which is conducive to reducing the thickness of the folding mechanism, so that the folding mechanism and the electronic device are more easily realized to be light and thin.

[0079] In a possible implementation, the first support plate comprises a sliding block, and the first fixing frame is provided with a second sliding groove; the sliding block of the first support plate is arranged in the second sliding groove of the first fixing frame and can slide in the second sliding groove of the first fixing frame.

[0080] It can be understood that the sliding block of the first support plate is arranged in the second sliding groove of the first fixing frame. Through relative movement of the two, the first support plate and the first fixing frame form a sliding connection structure through cooperation of the sliding block and the sliding groove. The sliding connection structure of the embodiment is relatively simple.

[0081] In a possible implementation, the first fixing frame comprises a first side surface facing the main shaft, and the second sliding groove of the first fixing frame is arranged obliquely relative to the first side surface of the first fixing frame.

[0082] It can be understood that, by setting the second sliding groove of the first fixed frame to be inclined relative to the first side surface of the first fixed frame, when the first fixed frame and the first support plate are matched with each other, the first fixed frame and the first support plate can form a matching structure of oblique sliding grooves, and then when the electronic device falls or collides, the pressure applied by the first shell to the first fixed frame. At this time, the first fixed frame can distribute the energy of the falling impact to the first support plate and the main shaft. In this way, the falling impact performance of the folding mechanism is better, thereby being beneficial to improving the service life and reliability of the electronic device.

[0083] In a third aspect, the application provides a folding mechanism. The folding mechanism comprises a main shaft, a first fixed frame, a second fixed frame, a first support plate, a second support plate, a third support plate, a fourth support plate, a first connecting piece, a second connecting piece, a first revolute pair, a second revolute pair, a third revolute pair and a fourth revolute pair. The main shaft is located between the first fixed frame and the second fixed frame. The first support plate is rotationally connected to the main shaft, and the third support plate is rotationally connected to the first fixed frame.

[0084] The first connecting piece comprises a rotating end, a connecting section and a sliding end connected in sequence. The rotating end of the first connecting piece is rotationally connected to the main shaft, the sliding end of the first connecting piece is slidingly connected to the first fixed frame, the connecting section of the first connecting piece is connected to the first support plate through the first revolute pair, and the connecting section of the first connecting piece is further connected to the third support plate through the third revolute pair. The second support plate is rotationally connected to the main shaft, and the fourth support plate is rotationally connected to the second fixed frame. The second connecting piece comprises a rotating end, a connecting section and a sliding end connected in sequence. The rotating end of the second connecting piece is rotationally connected to the main shaft, the sliding end of the second connecting piece is slidingly connected to the second fixed frame, the connecting section of the second connecting piece is connected to the second support plate through the second revolute pair, and the connecting section of the second connecting piece is further connected to the fourth support plate through the fourth revolute pair.

[0085] It can be understood that the folding mechanism can be a crank slider linkage mechanism. The main motion of the folding mechanism can be composed of a primary motion and a secondary motion. The primary motion can be the movement mode of a first four-bar linkage mechanism composed of a main shaft, a first support plate, a first connecting piece and a first rotary pair. In addition, the secondary motion can be the movement mode of a second four-bar linkage mechanism composed of a third support plate, a first fixed frame, a third rotary pair and a first connecting piece. The folding mechanism can pass through the primary motion and the secondary motion, so that during the unfolding or folding process of the folding mechanism, the degree of freedom of the first fixed frame relative to the main shaft can be 1, so that the movement trajectory of the first fixed frame relative to the main shaft can be determined. Specifically, during the unfolding or folding process of the folding mechanism, the movement mode of the first support plate, the third support plate, the first connecting piece, the first rotary pair and the third rotary pair can constrain the movement trajectory of the first fixed frame, so that the movement trajectory of the first fixed frame relative to the main shaft can be determined. In this way, during the change from the flat state to the folded state of the folding mechanism, the first support plate, the third support plate, the first connecting piece, the first rotary pair and the third rotary pair can pull the first fixed frame back to be close to the main shaft. During the change from the folded state to the flat state of the folding mechanism, the first support plate, the third support plate, the first connecting piece, the first rotary pair and the third rotary pair can push the first fixed frame away from the main shaft.

[0086] It can be understood that during the unfolding or folding process of the folding mechanism, the movement mode of the second support plate, the fourth support plate, the second connecting piece, the second rotary pair and the fourth rotary pair can constrain the movement trajectory of the second fixed frame, so that the movement trajectory of the second fixed frame relative to the main shaft can be determined. In this way, during the change from the flat state to the folded state of the folding mechanism, the second support plate, the fourth support plate, the second connecting piece, the second rotary pair and the fourth rotary pair can pull the second fixed frame back to be close to the main shaft. During the change from the folded state to the flat state of the folding mechanism, the second support plate, the fourth support plate, the second connecting piece, the second rotary pair and the fourth rotary pair can push the second fixed frame away from the main shaft.

[0087] In a possible implementation, when the folding mechanism is in the flat state, the third support plate, the first support plate, the second support plate and the fourth support plate are sequentially spliced and jointly form a support surface.

[0088] When the folding mechanism is in the folded state, the first support plate and the second support plate are oppositely arranged, the third support plate and the fourth support plate are oppositely arranged, and the main shaft, the first support plate, the second support plate, the third support plate and the fourth support plate enclose an accommodation space.

[0089] It can be understood that when the folding mechanism is in the unfolded state, the first support plate, the second support plate, the third support plate and the fourth support plate can jointly form a support surface, so that when the folding mechanism is applied to the electronic device, the support surface can support the second display area of the flexible screen. At this time, the flexible screen is not prone to problems such as indentation under the pressing of the user, which is conducive to improving the service life and reliability of the flexible screen, and can also make the light and shadow of the flexible screen better. Therefore, the product competitiveness of the folding mechanism of the embodiment is better.

[0090] It can be understood that in an embodiment, when the folding mechanism is in the unfolded state, the first support plate, the second support plate and the main shaft jointly form a support surface for supporting the second display area of the flexible screen. In this scheme, since the main shaft needs to be connected with the first support plate and the second support plate through a plurality of connecting pieces, the main shaft needs to be provided with a plurality of avoiding spaces for avoiding the connecting pieces or other components. The avoiding space can be a groove or a through hole. In this way, the surface of the main shaft for forming the support surface is prone to pits, that is, the flatness of the support surface is poor. At this time, the flexible screen is prone to indentation under the pressing of the user, thereby causing problems such as failure of the flexible screen, which is not conducive to improving the service life and reliability of the flexible screen. In the embodiment, when the folding mechanism is in the unfolded state, the first support plate, the second support plate, the third support plate and the fourth support plate of the folding mechanism can jointly form a support surface for supporting the second display area of the flexible screen. At this time, the embodiment can no longer support the second display area of the flexible screen through the main shaft, thereby avoiding the problems such as failure of the flexible screen caused by poor flatness of the main shaft. In other words, the service life and reliability of the flexible screen of the electronic device in the unfolded state are better.

[0091] It can be understood that since the first support plate, the second support plate, the third support plate and the fourth support plate have fewer connection positions with other structures and the part fitting relationship is relatively simple, the first support plate, the second support plate, the third support plate and the fourth support plate have fewer holes and the structure is relatively regular. In this way, the support surface jointly formed by the first support plate, the second support plate, the third support plate and the fourth support plate has fewer holes and smaller gaps between adjacent two support plates, thereby being conducive to the flatness of the support surface and further being conducive to improving the service life and reliability of the flexible screen.

[0092] It can be understood that when the folding mechanism is in the folded state, the first support plate, the second support plate, the third support plate and the fourth support plate can jointly form an accommodation space with the main shaft, so as to accommodate the second display area of the flexible screen when the folding mechanism is applied to the electronic device. It can be understood that during the folding process of the folding mechanism, the first support plate, the second support plate, the third support plate and the fourth support plate can automatically avoid to form the accommodation space. Among them, the first support plate, the second support plate, the third support plate and the fourth support plate can stabilize the folding action of the flexible screen, and the extrusion force is small, thereby being beneficial to reduce the risk of damage of the flexible screen due to excessive extrusion of the folding mechanism, and the reliability of the flexible screen is high.

[0093] Exemplarily, when the folding mechanism is in the folded state, the first support plate, the second support plate, the third support plate and the fourth support plate can stably support the second display area of the flexible screen, thereby reducing the damage risk of the flexible screen due to the free, and further improving the service life and reliability of the flexible screen. Therefore, the product competitiveness of the folding mechanism of the embodiment is better.

[0094] In a possible implementation, when the folding mechanism is in the folded state, the first support plate and the second support plate are both inclined relative to the main shaft, and the first support plate and the second support plate are close to each other in the direction close to the main shaft, and the third support plate and the fourth support plate are also inclined relative to the main shaft, and the third support plate and the fourth support plate are close to each other in the direction away from the main shaft. In this way, during the folding process of the electronic device, the volume of the accommodation space is large, and the first support plate, the second support plate, the third support plate and the fourth support plate can stabilize the folding action of the flexible screen, and the extrusion force is smaller, thereby being beneficial to reduce the risk of damage of the flexible screen due to excessive extrusion of the folding mechanism, and the reliability of the flexible screen is high.

[0095] In a possible implementation, when the folding mechanism is in the unfolded state, the first support plate and the second support plate jointly cover the entire main shaft;

[0096] When the folding mechanism is in the folded state, the first support plate and the second support plate cover two side portions of the main shaft respectively.

[0097] It can be understood that when the folding mechanism is in the unfolded state, the first support plate and the second support plate jointly cover the entire main shaft. In this way, the first support plate and the second support plate are arranged more compactly, thereby being beneficial to the miniaturization of the folding mechanism.

[0098] It can be understood that when the folding mechanism is in the folded state, the first support plate and the second support plate cover two sides of the main shaft respectively. In this way, compared with the case that when the folding mechanism is in the folded state, the first support plate and the second support plate do not cover the two sides of the main shaft, the first support plate and the second support plate of the embodiment are arranged more compactly, thereby facilitating the miniaturization of the folding mechanism.

[0099] In a possible implementation, the main shaft is bent to form an inner space, and the main shaft is further provided with a first arc-shaped groove, and the first arc-shaped groove of the main shaft communicates with the inner space.

[0100] The first support plate comprises a first support plate body and an arc-shaped block.

[0101] The arc-shaped block of the first support plate is arranged in the first arc-shaped groove of the main shaft and can rotate in the first arc-shaped groove of the main shaft; and at least part of the first support plate body is arranged in the inner space and can rotate in the inner space.

[0102] It can be understood that the arc-shaped block of the first support plate is arranged in the first arc-shaped groove of the main shaft. Through the relative movement of the two, the first support plate and the main shaft are connected through the arc-shaped block and the arc-shaped groove to form a rotating connection structure, that is, the first support plate and the main shaft can be connected through a virtual shaft. The structure of the virtual shaft rotating connection is simple, occupies small space, and is beneficial to reducing the thickness of the folding mechanism, so that the folding mechanism and the electronic device are more easily realized to be light and thin.

[0103] It can be understood that at least part of the first support plate body is arranged in the inner space, which is beneficial to reducing the thickness of the folding mechanism, so that the folding mechanism and the electronic device are more easily realized to be light and thin.

[0104] In a fourth aspect, the application provides an electronic device. The electronic device comprises a first shell, a second shell, a flexible screen and a folding mechanism according to any one of claims 1 to 19, the first fixing frame is fixedly connected with the first shell, and the second fixing frame is fixedly connected with the second shell.

[0105] The flexible screen comprises a first display area, a second display area and a third display area connected in sequence, the first display area is fixed on the first shell, and the third display area is fixed on the second shell.

[0106] It can be understood that since the first fixing frame can be fixedly connected with the first shell, the first shell can move with the first fixing frame, and the folding mechanism can control the movement track of the first shell by controlling the movement track of the first fixing frame. In addition, since the second fixing frame can be fixedly connected with the second shell, the second shell can move with the second fixing frame, and the folding mechanism can control the movement track of the second shell by controlling the movement track of the second fixing frame.

[0107] It can be understood that, since the first fixed frame is fixedly connected to the first shell, the first support plate, the third support plate, the first connecting piece and the first rotary pair can pull the first fixed frame back to be close to the main shaft, and can also push the first fixed frame out to be away from the main shaft, so that the first fixed frame can pull the first shell back to be close to the main shaft, and can also push the first shell out to be away from the main shaft, that is, the first fixed frame can drive the first shell to realize inward pulling and outward pushing movement. Similarly, since the second fixed frame can be fixedly connected to the second shell, the second support plate, the fourth support plate, the second connecting piece and the second rotary pair can pull the second fixed frame back to be close to the main shaft, and can also push the second fixed frame out to be away from the main shaft, so that the second fixed frame can pull the second shell back to be close to the main shaft, and can also push the second shell out to be away from the main shaft, that is, the second fixed frame can drive the second shell to realize inward pulling and outward pushing movement.

[0108] It can be understood that, when the electronic device switches from the unfolded state to the folded state, the first shell and the second shell are close to each other, the first shell can drive the first fixed frame to rotate relative to the main shaft through the first support plate, the third support plate, the first connecting piece and the first rotary pair, and the second shell can drive the second fixed frame to rotate relative to the main shaft through the second support plate, the fourth support plate, the second connecting piece and the second rotary pair. During the relative unfolding of the first shell and the second shell, the first fixed frame can drive the first shell to move away from the main shaft, and the second fixed frame can drive the second shell to move away from the main shaft. That is, the folding mechanism can realize the inward pulling movement of the shell during the change from the unfolded state to the folded state, and the outward pushing movement of the shell during the change from the folded state to the unfolded state. Therefore, during the unfolding or folding process, the folding mechanism can reduce the risk of pulling or pressing the flexible screen, thereby protecting the flexible screen, improving the reliability of the flexible screen, and prolonging the service life of the flexible screen and the electronic device.

[0109] In a possible implementation, when the electronic device is in the unfolded state, the first support plate, the second support plate, the third support plate and the fourth support plate jointly form a support surface, and the support surface supports the second display area; when the folding mechanism is in the folded state, the main shaft, the first support plate, the second support plate, the third support plate and the fourth support plate enclose an accommodation space, and the accommodation space accommodates the second display area.

[0110] It can be understood that, when the electronic device is in the unfolded state, the first support plate, the second support plate, the third support plate and the fourth support plate of the folding mechanism can jointly form a support surface for supporting the second display area of the flexible screen. At this time, the flexible screen is not prone to problems such as indentation under the user's pressing, which is conducive to improving the service life and reliability of the flexible screen, and also makes the light and shadow of the flexible screen better. Therefore, the product competitiveness of the folding mechanism of the present embodiment is better.

[0111] It can be understood that, in an embodiment, when the electronic device is in the unfolded state, the first support plate, the second support plate and the main shaft jointly form a support surface for supporting the second display area of the flexible screen. In this scheme, since the main shaft needs to be connected with the first support plate and the second support plate through a plurality of connecting members, the main shaft needs to be provided with a plurality of avoiding spaces for avoiding the connecting members or other components. The avoiding space can be a groove or a through hole. In this way, the surface of the main shaft for forming the support surface is prone to have pits, that is, the flatness of the support surface is poor. At this time, the flexible screen is prone to be concave under the pressing of the user, thereby causing the flexible screen to fail and other problems, which is not conducive to improving the service life and reliability of the flexible screen. In the present embodiment, when the electronic device is in the unfolded state, the first support plate, the second support plate, the third support plate and the fourth support plate of the folding mechanism can jointly splice into a support surface for supporting the second display area of the flexible screen. At this time, the present embodiment can no longer support the second display area of the flexible screen through the main shaft, thereby avoiding the problem that the poor flatness of the main shaft causes the flexible screen to fail and other problems. In other words, the service life and reliability of the flexible screen of the electronic device in the present embodiment are both good when it is in the unfolded state.

[0112] It can be understood that, since the first support plate, the second support plate, the third support plate and the fourth support plate have fewer connection positions with other structures and the part fitting relationship is relatively simple, the first support plate, the second support plate, the third support plate and the fourth support plate have fewer holes and a relatively regular structure. In this way, the support surface jointly formed by the first support plate, the second support plate, the third support plate and the fourth support plate has fewer holes and smaller gaps between adjacent support plates, thereby being conducive to the flatness of the support surface and further improving the service life and reliability of the flexible screen.

[0113] It can be understood that, when the electronic device is in the folded state, the first support plate, the second support plate, the third support plate and the fourth support plate can jointly form an accommodating space with the main shaft for accommodating the second display area of the flexible screen. It can be understood that, in the folding process of the electronic device, the first support plate, the second support plate, the third support plate and the fourth support plate can automatically avoid to form the accommodating space. The first support plate, the second support plate, the third support plate and the fourth support plate can stably fold the flexible screen with small extrusion force, thereby being conducive to reducing the risk of damage to the flexible screen caused by excessive extrusion of the folding mechanism and improving the reliability of the flexible screen.

[0114] Exemplarily, when the electronic device is in the folded state, the first support plate, the second support plate, the third support plate and the fourth support plate can stably support the second display area of the flexible screen, thereby reducing the damage risk of the flexible screen caused by the free state and further improving the service life and reliability of the flexible screen. Therefore, the product competitiveness of the folding mechanism of the present embodiment is good. BRIEF DESCRIPTION OF DRAWINGS

[0115] Fig. 1 is a structural schematic diagram of an electronic device in a flat state according to an embodiment of the present application;

[0116] Fig. 2 is a partial sectional view of an embodiment of the electronic device shown in Fig. 1 at line A-A;

[0117] Fig. 3 is a structural schematic diagram of an embodiment of the electronic device shown in Fig. 1 in a folded state;

[0118] Fig. 4 is a partial sectional view of an embodiment of the electronic device shown in Fig. 3 at line B-B;

[0119] Fig. 5 is a partial exploded view I of an embodiment of the electronic device shown in Fig. 1 ;

[0120] Fig. 6 is a partial exploded view II of an embodiment of the electronic device shown in Fig. 1 ;

[0121] Fig. 7 is a partial exploded schematic view I of an embodiment of the folding mechanism shown in Fig. 6;

[0122] Fig. 8 is an enlarged schematic view of an embodiment of the main shaft shown in Fig. 7 at C;

[0123] Fig. 9 is a partial exploded schematic view of an embodiment of the first connecting assembly and the second connecting assembly shown in Fig. 7;

[0124] Fig. 10 is a structural schematic view of an embodiment of the first support plate and the second support plate shown in Fig. 9;

[0125] Fig. 11 is a structural schematic view of the first support plate and the second support plate shown in Fig. 9 from another angle;

[0126] Fig. 12 is a partial structural schematic view I of an embodiment of the folding mechanism shown in Fig. 6;

[0127] Fig. 13 is a partial sectional view of an embodiment of the partial folding mechanism shown in Fig. 12 at line D-D;

[0128] Fig. 14 is a partial sectional view of the partial folding mechanism shown in Fig. 12 in a folded state;

[0129] Fig. 15 is a structural schematic view of an embodiment of the third support plate and the fourth support plate shown in Fig. 9;

[0130] Fig. 16 is a structural schematic view of the third support plate and the fourth support plate shown in Fig. 9 from another angle;

[0131] Fig. 17 is a partial exploded schematic view II of an embodiment of the folding mechanism shown in Fig. 6;

[0132] Fig. 18 is a partial structural schematic diagram II of one embodiment of the folding mechanism shown in Fig. 6;

[0133] Fig. 19 is a structural schematic diagram of the partial folding mechanism shown in Fig. 18 in a folded state;

[0134] Fig. 20 is a structural schematic diagram of one embodiment of the first and second fixed frames shown in Fig. 9;

[0135] Fig. 21 is a structural schematic diagram of the first and second fixed frames shown in Fig. 9 from another angle;

[0136] Fig. 22 is a partial structural schematic diagram III of one embodiment of the folding mechanism shown in Fig. 6;

[0137] Fig. 23 is a structural schematic diagram of the partial folding mechanism shown in Fig. 22 in a folded state;

[0138] Fig. 24 is a structural schematic diagram of one embodiment of the first and second connecting members shown in Fig. 9;

[0139] Fig. 25 is a partial exploded schematic diagram III of one embodiment of the folding mechanism shown in Fig. 6;

[0140] Fig. 26 is a partial structural schematic diagram IV of one embodiment of the folding mechanism shown in Fig. 6;

[0141] Fig. 27 is a partial cross-sectional view of the partial folding mechanism shown in Fig. 26 in a folded state;

[0142] Fig. 28 is a partial exploded schematic diagram IV of one embodiment of the folding mechanism shown in Fig. 6;

[0143] Fig. 29 is a partial structural schematic diagram V of one embodiment of the folding mechanism shown in Fig. 6;

[0144] Fig. 30 is a partial structural schematic diagram VI of one embodiment of the folding mechanism shown in Fig. 6;

[0145] Fig. 31 is a partial cross-sectional view of one embodiment of the partial folding mechanism shown in Fig. 30 at line E-E;

[0146] Fig. 32 is a cross-sectional view of the partial folding mechanism shown in Fig. 30 in a folded state;

[0147] Fig. 33 is a schematic diagram of one embodiment of the connection relationship between the partial structure of the first connecting assembly shown in Fig. 7 and the main shaft;

[0148] Fig. 34 is a partial cross-sectional view of one embodiment of the electronic device shown in Fig. 5 at line F-F;

[0149] FIG. 35 is a partial cross-sectional view of one embodiment of the electronic device shown in FIG. 3 taken at line G-G;

[0150] FIG. 36 is a partial schematic view of one embodiment of the folding mechanism shown in FIG. 6;

[0151] FIG. 37 is a partial cross-sectional view of one embodiment of the folding mechanism shown in FIG. 36 taken at line H-H;

[0152] FIG. 38 is a schematic diagram of one embodiment of the connection relationship between the partial structure of the first connecting assembly shown in FIG. 36 and the main shaft;

[0153] FIG. 39 is a schematic diagram of another embodiment of the connection relationship between the partial structure of the first connecting assembly shown in FIG. 36 and the main shaft;

[0154] FIG. 40 is a schematic diagram of another embodiment of the connection relationship between the partial structure of the first connecting assembly shown in FIG. 7 and the main shaft;

[0155] FIG. 41 is a schematic diagram of another embodiment of the connection relationship between the partial structure of the first connecting assembly shown in FIG. 7 and the main shaft;

[0156] FIG. 42 is a schematic diagram of another embodiment of the connection relationship between the partial structure of the first connecting assembly shown in FIG. 7 and the main shaft;

[0157] FIG. 43 is a schematic diagram of another embodiment of the connection relationship between the partial structure of the first connecting assembly shown in FIG. 7 and the main shaft; DETAILED DESCRIPTION

[0158] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present application.

[0159] In the description of the present application, it should be noted that unless otherwise specified and limited, the terms "mounting", "connecting", "connection", "joint" should be understood in a broad sense, for example, "connection" can be detachable connection, or can be non-detachable connection; can be direct connection, or can be indirect connection through intermediate medium; can be electrical connection, or can be mechanical connection. Among them, "fixed connection" refers to the relative position relationship after being connected with each other. "Rotary connection" refers to the relative rotation after being connected with each other. "Sliding connection" refers to the relative sliding after being connected with each other. "Movable connection" refers to the relative movement after being connected with each other. In addition, the integrated structure of two components obtained by one-piece forming process refers to the process of forming one of the two components, that is, the component is connected with the other component, and the two components do not need to be connected together by reprocessing (such as bonding, welding, buckling connection, screw connection) mode. Component A and component B are relatively arranged, component A is projected to obtain projection C along the target direction, component B is projected to obtain projection D along the target direction, and projection C and projection D can at least mostly overlap. In some embodiments, the mostly overlap can be any of the following cases: projection C is completely located in projection D. Or, projection D is completely located in projection C. Or, projection C and projection D intersect with each other, and the intersection area of projection C and projection D accounts for more than 50% of projection C or projection D.

[0160] The orientation terms mentioned in the embodiments of the present application, such as "top", "bottom", "inner", "outer" and the like, are only the directions of the drawings, therefore, the orientation terms used are for better and clearer illustration and understanding of the embodiments of the present application, and are not intended to indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on 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 the specific circumstances.

[0161] The terms "first", "second", and the like 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 interchanged under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first", "second", etc. are usually a class, and do not limit the number of objects, for example, the first object can be one or more. In addition, "and / or" in the specification and claims means at least one of the connected objects, and the character " / ", generally means that the front and rear associated objects are in an "or" relationship. "Multiple" means at least two.

[0162] FIG. 1 is a structural schematic diagram of an electronic device 1000 in a flat state according to an embodiment of the present application. FIG. 2 is a partial cross-sectional view of the electronic device 1000 along line A-A in FIG. 1 according to an embodiment of the present application. FIG. 3 is a structural schematic diagram of the electronic device 1000 in a folded state according to an embodiment of the present application. FIG. 4 is a partial cross-sectional view of the electronic device 1000 along line B-B in FIG. 3 according to an embodiment of the present application.

[0163] As shown in FIGS. 1-4, the present application provides a foldable electronic device 1000. The foldable electronic device 1000 can be a mobile phone, a tablet computer, a personal computer, a notebook computer, a vehicle-mounted device, or a wearable device (such as a smart bracelet), etc. The present application will be described in detail with the electronic device 1000 being a mobile phone as an example.

[0164] For ease of description, the thickness direction of the electronic device 1000 is defined as the Z-axis direction, and the extending direction of the rotation axis of the electronic device 1000 is defined as the Y-axis direction. The direction perpendicular to the Y-axis direction and the Z-axis direction is defined as the X-axis direction. It can be understood that the coordinate system of the electronic device 1000 can also be flexibly set according to specific needs.

[0165] In the present embodiment, the direction of the rotation axis of the electronic device 1000 is the Y-axis direction, i.e., the electronic device 1000 can be relatively folded or unfolded 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. The present embodiment is described with the direction of the rotation axis of the electronic device 1000 being the Y-axis direction as an example, in which case the electronic device 1000 can be folded left and right, and the folding and unfolding of the electronic device 1000 affects the length dimension of the electronic device 1000. In other embodiments, the rotation axis of the electronic device 1000 can also be the X-axis direction, i.e., the electronic device 1000 can be relatively folded or unfolded along the X-axis direction. In this case, the electronic device 1000 can be folded up and down, and the folding and unfolding of the electronic device 1000 affects the width dimension of the electronic device 1000.

[0166] FIG. 5 is a partial exploded view I of the electronic device 1000 in FIG. 1 according to an embodiment of the present application. FIG. 6 is a partial exploded view II of the electronic device 1000 in FIG. 1 according to an embodiment of the present application.

[0167] As shown in FIGS. 5 and 6, the electronic device 1000 includes a folding mechanism 100, a flexible screen 200, a first housing 300, and a second housing 400. The flexible screen 200 can be an organic light-emitting diode (OLED) display screen, an active-matrix organic light-emitting diode (AMOLED) display screen, a mini organic light-emitting diode display screen, a micro organic light-emitting diode display screen, or a quantum dot light emitting diode (QLED) display screen, etc. Exemplarily, the thickness direction of the folding mechanism 100 can be the Z-axis direction, the length direction of the folding mechanism 100 can be the Y-axis direction, and the width direction of the folding mechanism 100 can be the X-axis direction. In other embodiments, the coordinate system of the folding mechanism 100 can also be flexibly set according to specific needs.

[0168] As shown in FIGS. 5 and 6, the folding mechanism 100 is connected between the first housing 300 and the second housing 400. The folding mechanism 100 is used to unfold or fold the first housing 300 and the second housing 400 relative to each other. The folding mechanism 100, the first housing 300, and the second housing 400 can constitute a housing device of the electronic device 1000.

[0169] Please refer to FIGS. 5 and 6, and in combination with FIGS. 1 and 2, when the first housing 300 and the second housing 400 are unfolded relative to each other to a flat state, the electronic device 1000 is in the flat state, and the first housing 300 and the second housing 400 can be 180°. In other embodiments, the first housing 300 and the second housing 400 can also have a slight deviation from 180°, for example, 165°, 177°, or 185°, etc.

[0170] As shown in FIGS. 3 and 4, when the first housing 300 and the second housing 400 are folded relative to each other to the closed state, the electronic device 1000 is in the folded state, the first housing 300 and the second housing 400 can be folded to each other, and there can be no large gap between the first housing 300 and the second housing 400. In this way, the appearance experience of the electronic device 1000 is better, and the performance of waterproof, dustproof, and foreign matter prevention is better. The folding of the first housing 300 and the second housing 400 includes the case where the two abut against each other, and can also include the case where there is a small gap between the two. When there is a small gap between the first housing 300 and the second housing 400, some foreign matters outside the electronic device 1000 will not enter between the first housing 300 and the second housing 400 through the gap.

[0171] The first housing 300 and the second housing 400 can also be unfolded or folded relative to each other to an intermediate state, so that the electronic device 1000 is in the intermediate state, and the intermediate state can be any state between the unfolded state and the folded state.

[0172] Please refer to FIGS. 5 and 6, and in combination with FIGS. 1 to 4, 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. FIGS. 1, 2, 5, and 6 all schematically distinguish the first display area 201, the second display area 202, and the third display area 203 by dashed lines. The first display area 201 of the flexible screen 200 can be fixed to the first housing 300. The third display area 203 can be fixed to the second housing 400. During the unfolding or folding of the first housing 300 and the second housing 400 relative to each other, the first housing 300 can drive the first display area 201 to move, the second housing 400 can drive the third display area 203 to move, the first display area 201 and the third display area 203 unfold or fold relative to each other, and the second display area 202 can be deformed.

[0173] It can be understood that, since the first display area 201 is fixed to the first housing 300, the third display area 203 is fixed to the second housing 400, and the first housing 300 and the second housing 400 unfold or fold relative to each other, the relative unfolding and folding actions 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 higher.

[0174] Please refer to FIG. 5 and FIG. 6, and in combination with FIG. 1 and FIG. 2, when the electronic device 1000 is in the unfolded state, the flexible screen 200 can be in the unfolded 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°, etc. At this time, the flexible screen 200 has a continuous large-area display area, that is, the flexible screen 200 can realize large-screen display, and the user experience is better.

[0175] Exemplarily, when the electronic device 1000 is in the unfolded 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, extrusion force or impact force, etc., 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 problems such as indentation.

[0176] As shown in FIG. 3 and FIG. 4, when the electronic device 1000 is in the folded state, the flexible screen 200 is in the 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 in a bent shape. At this time, the flexible screen 200 can be roughly in the shape of a "water droplet".

[0177] Exemplarily, when the electronic device 1000 is in the folded state, the flexible screen 200 is located in the space surrounded by the first housing 300, the folding mechanism 100 and the second housing 400. The first display area 201 and the third display area 203 can be located between the first housing 300 and the second housing 400. At this time, the planar size of the electronic device 1000 is small (has a small width size), which is convenient for the user to carry and store.

[0178] FIG. 7 is a partially exploded schematic view I of one embodiment of the folding mechanism 100 shown in FIG. 6.

[0179] Please refer to FIG. 7, in combination with FIG. 5 and FIG. 6, the folding mechanism 100 includes a main shaft 1, a first connecting assembly 2 and a second connecting assembly 3. Wherein, the length extension direction of the main shaft 1 can be the Y-axis direction. It can be understood that FIG. 5 to FIG. 7 only schematically show some components included in the folding mechanism 100, and the actual shape, actual size, actual position and actual structure of these components are not limited by FIG. 5 to FIG. 7.

[0180] Exemplarily, the main shaft 1 is located between the first housing 300 and the second housing 400. The first connecting assembly 2 connects the first housing 300, the main shaft 1 and the second housing 400. The second connecting assembly 3 connects the first housing 300, the main shaft 1 and the second housing 400. Exemplarily, the first connecting assembly 2 and the second connecting assembly 3 can be arranged in the length extension direction (i.e. the Y-axis direction) of the main shaft 1, for example, can be connected to the top and bottom of the main shaft 1 respectively. It can be understood that the first connecting assembly 2 and the second connecting assembly 3 can be mainly used to unfold or fold the first housing 300 and the second housing 400 relative to each other.

[0181] Referring to FIGS. 5-7, in combination with FIGS. 1 and 2, exemplarily, when the electronic device 1000 is in the unfolded state, the first connecting assembly 2 and the second connecting assembly 3 are both unfolded, and the first connecting assembly 2 and the second connecting assembly 3 jointly form at least part of the support surface 100a. The support surface 100a can be used to support the second display area 202. In addition, the first connecting assembly 2 covers part of the main shaft 1, and the second connecting assembly 3 covers part of the main shaft 1.

[0182] Referring to FIGS. 5-7, in combination with FIGS. 3 and 4, exemplarily, when the electronic device 1000 is in the folded state, the main shaft 1, the first connecting assembly 2 and the second connecting assembly 3 enclose at least part of the accommodation space 100b. The accommodation space 100b can be used to accommodate the second display area 202. In addition, the first connecting assembly 2 and the second connecting assembly 3 can be located on the same side of the main shaft 1.

[0183] It can be understood that the second connecting assembly 3 and the first connecting assembly 2 can be the same or similar structure, symmetrical or partially symmetrical structure, or different structure. In the present embodiment, the second connecting assembly 3 and the first connecting assembly 2 are symmetrical structures, and the basic design of the component structure of the second connecting assembly 3, the connection relationship design between the components, and the connection relationship design of the components and other structures outside the assembly can be referred to the related solutions of the first connecting assembly 2, while allowing the second connecting assembly 3 and the first connecting assembly 2 to be slightly different in the detailed structure or position arrangement of the components. Details are not described here. Hereinafter, the structure of the first connecting assembly 2 will be described as an example.

[0184] In other embodiments, the folding mechanism 100 can further comprise a third connecting assembly (not shown), a fourth connecting assembly (not shown),..., and an Nth connecting assembly (not shown). Wherein N is an integer greater than 2. The third connecting assembly, the fourth connecting assembly,..., and the Nth connecting assembly can connect the first housing 300, the main shaft 1, and the second housing 400. The third connecting assembly, the fourth connecting assembly,..., and the Nth connecting assembly can cooperate with the first connecting assembly 2 and the second connecting assembly 3 to better enable the first housing 300 and the second housing 400 to be unfolded or folded relative to each other.

[0185] Referring to FIG. 7, in combination with FIGS. 5 and 6, the main shaft 1 comprises a first end portion 1a, a middle portion 1b, and a second end portion 1c connected in sequence. The first end portion 1a of the main shaft 1 can be connected with the first connecting assembly 2. The second end portion 1c of the main shaft 1 can be connected with the second connecting assembly 3. It can be understood that the second end portion 1c of the main shaft 1 and the first end portion 1a of the main shaft 1 can be the same or similar structure, symmetrical or partially symmetrical structure, or different structure. In the present embodiment, the second end portion 1c of the main shaft 1 and the first end portion 1a of the main shaft 1 are symmetrical structure. The basic design of the component structure of the second end portion 1c of the main shaft 1, the connection relationship design between the components, and the connection relationship design of the components and other structures outside the assembly can be referred to the related solutions of the first end portion 1a of the main shaft 1, while allowing the second end portion 1c of the main shaft 1 and the first end portion 1a of the main shaft 1 to be slightly different in the detailed structure or position arrangement of the components. Details are not described here. Hereinafter, the structure of the first end portion 1a of the main shaft 1 will be described as an example.

[0186] FIG. 8 is an enlarged schematic view of one embodiment of the main shaft 1 at C shown in FIG. 7.

[0187] Referring to FIG. 8, in combination with FIG. 7, the main shaft 1 is bent to form an inner space 10 of the main shaft 1. The inner space 10 is located on the inner side of the main shaft 1.

[0188] Exemplarily, the first end portion 1a of the main shaft 1 is provided with a first arc-shaped groove 11. The first arc-shaped groove 11 of the main shaft 1 can communicate with the inner space 10 of the main shaft 1. The number of the first arc-shaped groove 11 of the main shaft 1 can be one or multiple. When the number of the first arc-shaped groove 11 of the main shaft 1 is multiple, the multiple first arc-shaped grooves 11 of the main shaft 1 can be arranged along the Y-axis direction. The present embodiment will be described taking the number of the first arc-shaped groove 11 of the main shaft 1 as two as an example.

[0189] Exemplarily, the first end portion 1a of the main shaft 1 is further provided with a second arc-shaped groove 12. The arrangement of the second arc-shaped groove 12 of the main shaft 1 can refer to the arrangement of the first arc-shaped groove 11 of the main shaft 1. Details are not described here.

[0190] In an embodiment, the first arc-shaped slot 11 and the second arc-shaped slot 12 of the main shaft 1 can be arranged in the X-axis direction with a spacing. Exemplarily, the first arc-shaped slot 11 and the second arc-shaped slot 12 of the main shaft 1 can be symmetrically arranged. In other embodiments, the relative positions of the first arc-shaped slot 11 and the second arc-shaped slot 12 of the main shaft 1 are not specifically limited.

[0191] Exemplarily, the first end portion 1a of the main shaft 1 is further provided with a first rotation space 13. The first rotation space 13 can be a groove structure or a through-hole structure. The first rotation space 13 of the main shaft 1 can be located on one side of the first arc-shaped slot 11 of the main shaft 1. The first rotation space 13 of the main shaft 1 includes a first side wall 131 and a second side wall 132 arranged oppositely. The first side wall 131 and the second side wall 132 of the first rotation space 13 of the main shaft 1 are both provided with a rotation shaft hole 133. The rotation shaft hole 133 of the second side wall 132 of the first rotation space 13 of the main shaft 1 is arranged oppositely to the rotation shaft hole 133 of the first side wall 131 of the first rotation space 13 of the main shaft 1.

[0192] Exemplarily, the first end portion 1a of the main shaft 1 is further provided with a second rotation space 14. The second rotation space 14 can be a groove structure or a through-hole structure. The second rotation space 14 of the main shaft 1 can be located on one side of the second arc-shaped slot 12 of the main shaft 1. The second rotation space 14 of the main shaft 1 includes a first side wall 141 and a second side wall 142 arranged oppositely. The first side wall 141 and the second side wall 142 of the second rotation space 14 of the main shaft 1 are both provided with a rotation shaft hole 143. The rotation shaft hole 143 of the second side wall 142 of the second rotation space 14 of the main shaft 1 is arranged oppositely to the rotation shaft hole 143 of the first side wall 141 of the second rotation space 14 of the main shaft 1.

[0193] In an embodiment, the second rotation space 14 and the first rotation space 13 of the main shaft 1 can be arranged in the X-axis direction with a spacing. Exemplarily, the second rotation space 14 and the first rotation space 13 of the main shaft 1 can be symmetrically arranged. In other embodiments, the relative positions of the second rotation space 14 and the first rotation space 13 of the main shaft 1 are not specifically limited.

[0194] In an embodiment, the main shaft 1 can be further provided with a protrusion (not shown in the figure). The protrusion can be used to limit the first connecting assembly 2 and / or the second connecting assembly 3, prevent the first connecting assembly 2 from being accidentally separated from the main shaft 1, and improve the connection reliability and movement reliability of the first connecting assembly 2, the second connecting assembly 3 and the main shaft 1, so that the reliability of the folding mechanism 100 is higher.

[0195] FIG. 9 is a partially exploded schematic view of an embodiment of the first connecting assembly 2 and the second connecting assembly 3 shown in FIG. 7.

[0196] As shown in FIG. 9, the first connecting assembly 2 includes a first fixing frame 21, a second fixing frame 22, a first support plate 23, a second support plate 24, a third support plate 25, a fourth support plate 26, a first connecting member 27, a second connecting member 28, a first revolute pair 29a, and a second revolute pair 29b. It can be understood that FIG. 9 and the following related drawings only schematically show some components included in the first connecting assembly 2, and the actual shape, actual size, actual position, and actual structure of these components are not limited by FIG. 9 and the following drawings. In other embodiments, the first connecting assembly 2 can have more or fewer components. The first connecting assembly 2 can have more components. For example, the first connecting assembly 2 can further include a synchronizing member (not shown in the drawings) and / or a damping member (not shown in the drawings). The first connecting assembly 2 can also have fewer components. For example, the first connecting assembly 2 can not include the first revolute pair 29a and / or the second revolute pair 29b.

[0197] It can be understood that the second connecting assembly 3 in the present embodiment can be arranged in the same manner as the first connecting assembly 2, and thus the second connecting assembly 3 in the present embodiment can also include a first fixing frame 31, a second fixing frame 32, a first support plate 33, a second support plate 34, a third support plate 35, a fourth support plate 36, a first connecting member 37, a second connecting member 38, a first revolute pair 39a, and a second revolute pair 39b. In an embodiment, the first fixing frame 31 of the second connecting assembly 3 can be in an integral molding structure with the first fixing frame 21 of the first connecting assembly 2. The second fixing frame 32 of the second connecting assembly 3 can be in an integral molding structure with the second fixing frame 22 of the first connecting assembly 2. The first support plate 33 of the second connecting assembly 3 can be in an integral molding structure with the first support plate 23 of the first connecting assembly 2. The second support plate 34 of the second connecting assembly 3 can be in an integral molding structure with the second support plate 24 of the first connecting assembly 2. The third support plate 35 of the second connecting assembly 3 can be in an integral molding structure with the third support plate 25 of the first connecting assembly 2. The fourth support plate 36 of the second connecting assembly 3 can be in an integral molding structure with the fourth support plate 26 of the first connecting assembly 2. In other embodiments, the components of the second connecting assembly 3 and the components of the first connecting assembly 2 can also be independent separate structural members.

[0198] FIG. 10 is a structural schematic view of an embodiment of the first support plate 23 and the second support plate 24 shown in FIG. 9. FIG. 11 is a structural schematic view of the first support plate 23 and the second support plate 24 shown in FIG. 9 from another angle.

[0199] As shown in FIGS. 10 and 11, the first support plate 23 comprises a first support plate body 231, an arc-shaped block 232, and a sliding block 233. It can be understood that the first support plate 23 can be an integrally formed structural member to have a higher structural strength. It can be understood that FIG. 10 and the relevant drawings hereinafter only schematically show some components included in the first support plate 23, and the actual shape, actual size, actual position, and actual structure of these components are not limited by FIG. 10 and the relevant drawings hereinafter. In addition, when the first support plate 23 is in some other form, the first support plate 23 can also not comprise the arc-shaped block 232 and / or the sliding block 233.

[0200] It can be understood that the first support plate 23 can be integrally formed by different structural members. In this way, when the first support plate 23 is assembled with other structural members, the different structural members can be assembled with other structural members respectively, and then the different structural members are assembled into an integral structure. This assembly manner can reduce the assembly difficulty of other structural members with the first support plate 23.

[0201] As shown in FIGS. 10 and 11, the arc-shaped block 232 of the first support plate 23 is protruded from the first support plate body 231. The number of the arc-shaped block 232 of the first support plate 23 can be one or more (i.e., at least two). When the number of the arc-shaped block 232 of the first support plate 23 is more than one, the plurality of arc-shaped blocks 232 of the first support plate 23 are one-to-one correspondingly protruded from the plurality of surfaces of the first support plate body 231 in the Y-axis direction. Hereinafter, the case that two arc-shaped blocks 232 of the first support plate 23 are one-to-one correspondingly protruded from two surfaces of the first support plate body 231 in the Y-axis direction is taken as an example for description.

[0202] Exemplarily, the first support plate body 231 comprises a top surface 2311, a bottom surface 2312, a first end surface 2313, and a second end surface 2314. The first end surface 2313 and the second end surface 2314 of the first support plate body 231 are connected between the top surface 2311 and the bottom surface 2312 of the first support plate body 231. Exemplarily, the top surface 2311 and the bottom surface 2312 of the first support plate body 231 can be two surfaces of the first support plate body 231 in the Z-axis direction. The first end surface 2313 and the second end surface 2314 of the first support plate body 231 can be two surfaces of the first support plate body 231 in the Y-axis direction. The bottom surface 2312 of the first support plate body 231 faces the main shaft 1 when the folding mechanism 100 is in the unfolded state.

[0203] As shown in FIGS. 10 and 11, the first support plate body 231 is provided with an avoiding space 234. The avoiding space 234 of the first support plate body 231 can form an opening on the bottom surface 2312 and the second end surface 2314 of the first support plate body 231. At this time, the avoiding space 234 of the first support plate body 231 includes a first wall surface 2341. The first wall surface 2341 of the first support plate body 231 is arranged opposite to the first end surface 2313 of the first support plate body 231. In other embodiments, the avoiding space 234 of the first support plate body 231 can only form an opening on the bottom surface 2312 of the first support plate body 231. The specific structure of the avoiding space 234 of the first support plate body 231 is not specifically limited in the present embodiment.

[0204] As shown in FIGS. 10 and 11, one arc-shaped block 232 of the first support plate 23 is protruded from the first end surface 2313 of the first support plate body 231. One arc-shaped block 232 of the first support plate 23 is protruded from the first wall surface 2341 of the avoiding space 234 of the first support plate body 231. It can be understood that the embodiments of the arc-shaped block 232 of the first support plate 23 protruding from the first support plate body 231 are not limited to the embodiments described above. In other embodiments, the manner in which the arc-shaped block 232 of the first support plate 23 protrudes from the first support plate body 231 is not specifically limited.

[0205] As shown in FIGS. 10 and 11, the first support plate 23 is provided with a first rotating space 235. Exemplarily, the first rotating space 235 can form an opening on the top surface 2311 of the first support plate body 231. At this time, the first rotating space 235 can be a groove structure. In other embodiments, the first rotating space 235 can form an opening on the top surface 2311 and the bottom surface 2312 of the first support plate body 231. At this time, the first rotating space 235 can be a through-hole structure.

[0206] Exemplarily, the first rotating space 235 of the first support plate 23 can include a first side wall 2351 and a second side wall 2352 arranged opposite to each other. The first side wall 2351 and the second side wall 2352 of the first rotating space 235 of the first support plate 23 are both provided with a rotating shaft hole 2353. The rotating shaft hole 2353 of the first side wall 2351 of the first rotating space 235 of the first support plate 23 is arranged opposite to the rotating shaft hole 2353 of the second side wall 2352 of the first rotating space 235 of the first support plate 23.

[0207] It can be understood that the number of the first rotating space 235 of the first support plate 23 in the present embodiment is not limited to two as shown in FIGS. 10 and 11. In other embodiments, the number of the first rotating space 235 of the first support plate 23 is not specifically limited.

[0208] Exemplarily, the first rotation space 235 of the first support plate 23 can be located at one side of the arc-shaped block 232 of the first support plate 23 in the X-axis direction.

[0209] As shown in FIGS. 10 and 11, the first support plate 23 is exemplarily further provided with a second rotation space 236. Exemplarily, the second rotation space 236 can be formed with an opening on the top surface 2311 and the bottom surface 2312 of the first support plate body 231. At this time, the second rotation space 236 can be a through-hole structure. In other embodiments, the second rotation space 236 can be formed with an opening on the bottom surface 2312 of the first support plate body 231. At this time, the second rotation space 236 can be a groove structure.

[0210] Exemplarily, the second rotation space 236 of the first support plate 23 can include oppositely arranged first and second side walls 2361 and 2362. The first and second side walls 2361 and 2362 of the second rotation space 236 of the first support plate 23 are each provided with an axis hole 2363. The axis hole 2363 of the first side wall 2361 of the second rotation space 236 of the first support plate 23 is oppositely arranged with the axis hole 2363 of the second side wall 2362 of the second rotation space 236 of the first support plate 23.

[0211] Exemplarily, the axis hole 2363 of the first side wall 2361 of the second rotation space 236 of the first support plate 23, the axis hole 2363 of the second side wall 2362 of the second rotation space 236 of the first support plate 23, the axis hole 2353 of the first side wall 2351 of the first rotation space 235 of the first support plate 23, and the axis hole 2353 of the second side wall 2352 of the first rotation space 235 of the first support plate 23 can be on the same straight line.

[0212] Exemplarily, the sliding block 233 of the first support plate 23 includes first and second connecting portions 2331 and 2332. Exemplarily, in the Y-axis direction, the length of the first connecting portion 2331 of the sliding block 233 of the first support plate 23 is greater than the length of the second connecting portion 2332 of the sliding block 233 of the first support plate 23. At this time, in the Y-axis direction, the first connecting portion 2331 of the sliding block 233 of the first support plate 23 extends out through both sides of the second connecting portion 2332 of the sliding block 233 of the first support plate 23.

[0213] As shown in FIGS. 10 and 11, the sliding block 233 of the first support plate 23 is protrudingly arranged on one side of the first support plate body 231. Exemplarily, the first connecting portion 2331 of the sliding block 233 of the first support plate 23 is connected to the first support plate body 231.

[0214] Exemplarily, the sliding block 233 of the first support plate 23 can be located on the side of the first rotation space 235 of the first support plate 23 away from the arc-shaped block 232 of the first support plate 23 in the X-axis direction.

[0215] It can be understood that the second support plate 24 and the first support plate 23 can be the same or similar structure, symmetrical or partially symmetrical structure, or different structure. In the embodiment, the second support plate 24 and the first support plate 23 can be symmetrical structure, and the basic design of the component structure of the second support plate 24, the connection relationship design between components, and the connection relationship design of components and other structures outside the assembly can refer to the related solutions of the first support plate 23. For example, the second support plate 24 includes a second support plate body 241, an arc-shaped block 242, a sliding block 243, an avoiding space 244, a first rotation space 245, and a second rotation space 246. Meanwhile, the second support plate 24 and the first support plate 23 can be slightly different in the detailed structure or position arrangement of the components. Details are not described here.

[0216] FIG. 12 is a partial structure diagram of one embodiment of the folding mechanism 100 shown in FIG. 6. FIG. 13 is a partial cross-sectional view of one embodiment of the partial folding mechanism 100 shown in FIG. 12 at the D-D line. FIG. 14 is a partial cross-sectional view of the partial folding mechanism 100 shown in FIG. 12 in a folded state.

[0217] Please refer to FIGS. 12 to 14, and combine FIGS. 8, 10, and 11, the first support plate 23 is rotationally connected to the main shaft 1.

[0218] Exemplarily, the arc-shaped block 232 of the first support plate 23 is arranged in the first arc-shaped groove 11 of the main shaft 1. Through the relative movement of the two, the first support plate 23 and the main shaft 1 form a rotationally connected structure through the cooperation of the arc-shaped block and the arc-shaped groove, that is, the first support plate 23 and the main shaft 1 can be rotationally connected through a virtual shaft.

[0219] In the embodiment, the number of the arc-shaped block 232 of the first support plate 23 and the first arc-shaped groove 11 of the main shaft 1 is two. The two arc-shaped blocks 232 of the first support plate 23 are arranged in the two first arc-shaped grooves 11 of the main shaft 1 one by one.

[0220] In other embodiments, the first support plate 23 and the main shaft 1 can also be rotationally connected through a physical shaft. At this time, the connection relationship between the first support plate 23 and the main shaft 1 is reliable, the rotation virtual position is small, and the rotation action is accurate and stable.

[0221] In other embodiments, the rotational connection structure between the first support plate 23 and the main shaft 1 can be all solid shaft connections, all virtual shaft connections, or a combination of solid shaft connections and virtual shaft connections, which is not strictly limited in the present application.

[0222] It can be understood that the first rotation space 235 of the first support plate 23 can be located on the side of the arc-shaped block 232 of the first support plate 23 away from the main shaft 1. The first rotation space 245 of the second support plate 24 can be located on the side of the arc-shaped block 242 of the second support plate 24 away from the main shaft 1.

[0223] Please refer to FIGS. 12-14, in combination with FIGS. 8, 10 and 11, the second support plate 24 is rotationally connected to the main shaft 1. It can be understood that the connection mode of the second support plate 24 and the main shaft 1 can refer to the connection mode of the first support plate 23 and the main shaft 1. Details are not repeated here.

[0224] Please refer to FIGS. 12 and 13, when the folding mechanism 100 is in the unfolded state, the first support plate 23 and the second support plate 24 are spliced with each other to form a part of the support surface 100a. At this time, the first support plate 23 and the second support plate 24 are close to each other, and the distance between the first support plate 23 and the second support plate 24 is small. It can be understood that when the folding mechanism 100 is in the unfolded state, the top surface 2311 of the first support plate body 231 faces away from the main shaft 1. The top surface 2411 of the second support plate body 241 faces away from the main shaft 1.

[0225] The splicing of the first support plate 23 and the second support plate 24 can include but is not limited to the following scenarios: a part of the first support plate 23 and a part of the second support plate 24 are in contact with each other, and there is no gap between the contact parts, and a gap or a gap can be formed between another part of the first support plate 23 and another part of the second support plate 24; or the first support plate 23 and the second support plate 24 are in contact with each other as a whole, and there is no gap between them; or a part of the first support plate 23 and a part of the second support plate 24 are close to each other, and there is a small gap between the close parts, and a gap or a gap can be formed between another part of the first support plate 23 and another part of the second support plate 24; or the first support plate 23 and the second support plate 24 are close to each other as a whole, and there is a small gap between them. It can be understood that when there is a small gap between the first support plate 23 and the second support plate 24, or a small gap between a part of the first support plate 23 and a part of the second support plate 24, the user presses the area of the flexible screen 200 corresponding to the gap, and the corresponding area of the flexible screen 200 will not appear obvious pits, and the first support plate 23 and the second support plate 24 can provide strong support for the flexible screen 200.

[0226] When there is a gap or a slit between the first support plate 23 and the second support plate 24, or there is a gap or a slit between a part of the first support plate 23 and a part of the second support plate 24, the area of the gap or the slit can be minimized by optimizing the sizes and shapes of the components of the folding mechanism 100, so that the area of the flexible screen 200 corresponding to the gap or the slit can slightly sag under the pressing of the user, but still without obvious pits.

[0227] Referring to FIGS. 12 to 14, and in combination with FIGS. 8, 10 and 11, it is exemplarily shown that at least a part of the first support plate body 231 is arranged in the inner space 10 and can rotate in the inner space 10. In this way, the first support plate 23 can utilize the inner space of the main shaft 1, thereby facilitating the thin-type arrangement of the folding mechanism 100.

[0228] Referring to FIGS. 12 to 14, and in combination with FIGS. 8, 10 and 11, it is exemplarily shown that at least a part of the first support plate body 231 is arranged in the inner space 10 and can rotate in the inner space 10. In this way, the first support plate 23 can utilize the inner space of the main shaft 1, thereby facilitating the thin-type arrangement of the folding mechanism 100.

[0229] As shown in FIG. 13, it is exemplarily shown that when the folding mechanism 100 is in the unfolded state, the first support plate 23 and the second support plate 24 jointly cover the entire main shaft 1. In this way, the first support plate 23 and the second support plate 24 are arranged more compactly, thereby facilitating the miniaturization of the folding mechanism 100.

[0230] As shown in FIG. 13, it is exemplarily shown that when the folding mechanism 100 is in the unfolded state, the arc-shaped block 232 of the first support plate 23 is turned into the first arc-shaped groove 11 of the main shaft 1, the arc-shaped block 242 of the second support plate 24 is turned into the second arc-shaped groove 12 of the main shaft 1, most of the first support plate body 231 is turned into the inner space 10, and most of the second support plate body 241 is turned into the inner space 10.

[0231] As shown in FIG. 14, when the folding mechanism 100 is in the folded state, the first support plate body 231 of the first support plate 23 and the second support plate body 241 of the second support plate 24 are oppositely arranged, and the first support plate body 231, the second support plate body 241 and the main shaft 1 jointly enclose a part of the accommodating space 100b.

[0232] As shown in FIG. 14, it is exemplarily shown that when the folding mechanism 100 is in the folded state, a part of the first support plate body 231 is located in the inner space 10 of the main shaft 1, and a part of the second support plate body 241 is located in the inner space 10 of the main shaft 1.

[0233] As shown in FIG. 14, exemplarily, when the folding mechanism 100 is in the folded state, the first support plate 23 and the second support plate 24 are both arranged obliquely relative to the main shaft 1, and the first support plate 23 and the second support plate 24 are close to each other in the direction close to the main shaft 1. It can be understood that when the folding mechanism 100 is in the folded state, an included angle is formed between the first support plate 23 and the second support plate 24, and the first support plate 23 and the second support plate 24 can substantially present a positive "V" shape.

[0234] As shown in FIG. 14, exemplarily, when the folding mechanism 100 is in the folded state, the first support plate 23 and the second support plate 24 respectively cover two side portions of the main shaft 1. In this way, compared with the scheme that when the folding mechanism 100 is in the folded state, the first support plate 23 and the second support plate 24 do not cover the two side portions of the main shaft 1, the first support plate 23 and the second support plate 24 of the present embodiment are arranged more compactly, thereby being beneficial to the miniaturization of the folding mechanism 100.

[0235] As shown in FIG. 14, exemplarily, when the folding mechanism 100 is in the folded state, the arc-shaped block 232 of the first support plate 23 is partially turned out of the first arc-shaped groove 11 of the main shaft 1, and the arc-shaped block of the second support plate 24 is partially turned out of the second arc-shaped groove 12 of the main shaft 1. A part of the first support plate body 231 is turned out of the inner side space 10, and a part of the second support plate body 241 is turned out of the inner side space 10.

[0236] FIG. 15 is a structural schematic view of one embodiment of the third support plate 25 and the fourth support plate 26 shown in FIG. 9. FIG. 16 is a structural schematic view of the third support plate 25 and the fourth support plate 26 shown in FIG. 9 from another angle.

[0237] As shown in FIG. 15 and FIG. 16, exemplarily, the third support plate 25 comprises a third support plate body 251, a pivot block 252 and an arc-shaped block 253. It can be understood that the third support plate 25 can be an integrally formed structural member, so as to have higher structural strength. It can be understood that FIG. 15, FIG. 16 and the relevant drawings hereinafter only schematically show some components included in the third support plate 25, and the actual shape, actual size, actual position and actual structure of these components are not limited by FIG. 15, FIG. 16 and the relevant drawings hereinafter. In addition, when the third support plate 25 is in some other form, the first support plate 23 can also not comprise the pivot block 252 and / or the arc-shaped block 253.

[0238] It can be understood that the number of the pivot blocks 252 of the third support plate 25 and the number of the arc-shaped blocks 253 of the third support plate 25 are not limited to two as shown in FIG. 15 and FIG. 16. In other embodiments, the number of the pivot blocks 252 of the third support plate 25 and the number of the arc-shaped blocks 253 of the third support plate 25 are not specifically limited.

[0239] As shown in FIGS. 15 and 16, the third support plate body 251 includes a top surface 2511 and a bottom surface 2512 disposed oppositely, and a first side surface 2513 and a second side surface 2514 disposed oppositely. The top surface 2511 and the bottom surface 2512 of the third support plate body 251 are connected between the first side surface 2513 and the second side surface 2514 of the third support plate body 251. In other embodiments, the third support plate body 251 can also have other forms, for example, the third support plate body 251 does not include the first side surface 2513 and the second side surface 2514. At this time, the top surface 2511 and the bottom surface 2512 of the third support plate body 251 are connected to each other.

[0240] As shown in FIGS. 15 and 16, the rotation shaft block 252 of the third support plate 25 is provided with a rotation shaft hole 254. The rotation shaft block 252 of the third support plate 25 is protruded from the third support plate body 251. The rotation shaft block 252 of the third support plate 25 protrudes from one side of the third support plate body 251. For example, the rotation shaft block 252 of the third support plate 25 is protruded from the first side surface 2513 of the third support plate body 251. In other embodiments, the rotation shaft block 252 of the third support plate 25 is protruded from the bottom surface 2512 of the third support plate body 251, and protrudes from the first side surface 2513 of the third support plate body 251. This embodiment is not limited in this regard.

[0241] For example, the rotation shaft block 252 of the third support plate 25 can be in a semi-cylindrical shape, that is, a part of the outer surface of the rotation shaft block 252 of the third support plate 25 is an arc surface, and the other part is a flat surface.

[0242] As shown in FIGS. 15 and 16, for example, the arc-shaped block 253 of the third support plate 25 is protruded from the third support plate body 251. The arc-shaped block 253 of the third support plate 25 protrudes from the side of the third support plate body 251 away from the rotation shaft block 252 of the third support plate 25. For example, the arc-shaped block 253 of the third support plate 25 is protruded from the bottom surface 2512 of the third support plate body 251, and protrudes from the second side surface 2514 of the third support plate body 251. In other embodiments, the arc-shaped block 253 of the third support plate 25 is protruded from the second side surface 2514 of the third support plate body 251. This embodiment is not limited in this regard.

[0243] It can be understood that the fourth support plate 26 and the third support plate 25 can be the same or similar structure, symmetrical or partially symmetrical structure, or different structure. In the embodiment, the fourth support plate 26 and the third support plate 25 are symmetrical structure, the basic design of the component structure of the fourth support plate 26, the connection relationship design between the components, and the connection relationship design of the components and other structures outside the assembly can refer to the related schemes of the third support plate 25. For example, the fourth support plate 26 includes a fourth support plate body 261, a pivot block 262, and an arc block 263. In addition, the fourth support plate 26 and the third support plate 25 are allowed to be slightly different in the detailed structure or position arrangement of the components. Details are not repeated here.

[0244] FIG. 17 is a partially exploded schematic view II of an embodiment of the folding mechanism 100 shown in FIG. 6. FIG. 18 is a partially structural schematic view II of an embodiment of the folding mechanism 100 shown in FIG. 6. FIG. 19 is a structural schematic view of the partially folding mechanism 100 shown in FIG. 18 in a folded state.

[0245] Referring to FIGS. 17-19, in combination with FIGS. 10, 11, 15, and 16, the third support plate 25 is rotationally connected to the first support plate 23.

[0246] For example, the pivot block 252 of the third support plate 25 can be located in the first rotation space 235 of the first support plate 23. The pivot hole 254 of the pivot block 252 of the third support plate 25 can be located between the pivot hole 2353 of the first side wall 2351 of the first rotation space 235 of the first support plate 23 and the pivot hole 2353 of the second side wall 2352 of the first rotation space 235 of the first support plate 23. The pivot hole 254 of the pivot block 252 of the third support plate 25 is oppositely arranged with the pivot hole 2353 of the first side wall 2351 of the first rotation space 235 of the first support plate 23 and the pivot hole 2353 of the second side wall 2352 of the first rotation space 235 of the first support plate 23.

[0247] In the embodiment, the number of the pivot block 252 of the third support plate 25 and the number of the first rotation space 235 of the first support plate 23 are both two. The two pivot blocks 252 of the third support plate 25 are one-to-one correspondingly arranged in the two first rotation spaces 235 of the first support plate 23.

[0248] Exemplarily, the first connecting assembly 2 further comprises a first rotating shaft 20a. The first rotating shaft 20a passes through, in sequence, a rotating shaft hole 2353 of a first side wall 2351 of a first rotating space 235 of the first support plate 23, a rotating shaft hole 254 of a rotating shaft block 252 of the third support plate 25, and a rotating shaft hole 2353 of a second side wall 2352 of the first rotating space 235 of the first support plate 23. In an embodiment, two ends of the first rotating shaft 20a can be fixed in the rotating shaft holes 2353 of the first side wall 2351 of the first rotating space 235 of the first support plate 23 and the rotating shaft holes 2353 of the second side wall 2352 of the first rotating space 235 of the first support plate 23, respectively. A middle part of the first rotating shaft 20a can rotate relative to a hole wall of the rotating shaft hole 254 of the rotating shaft block 252 of the third support plate 25.

[0249] In other embodiments, the third support plate 25 can also be rotatably connected to the first support plate 23 in other rotating manners. For example, the third support plate 25 and the first support plate 23 can be rotatably connected through an arc-shaped block and an arc-shaped groove to form a rotating connection structure, that is, the third support plate 25 and the first support plate 23 can be rotatably connected through a virtual shaft. It can be understood that the structure rotatably connected through a virtual shaft is simple, occupies 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 are more easily realized to be light and thin.

[0250] In other embodiments, in the rotating connection structure between the third support plate 25 and the first support plate 23, all of the rotating connection structure can be connected by a physical shaft, all of the rotating connection structure can be connected by a virtual shaft, or a combination of the physical shaft and the virtual shaft can be used, which is not strictly limited in the present application.

[0251] Please refer to FIGS. 17-19, and in combination with FIGS. 10, 11, 15 and 16, the fourth support plate 26 is rotatably connected to the second support plate 24. It can be understood that the connection manner of the fourth support plate 26 and the second support plate 24 can refer to the connection manner of the third support plate 25 and the first support plate 23. For example, the fourth support plate 26 can be rotatably connected to the second support plate 24 through a second rotating shaft 20b. The rotating shaft block 262 of the fourth support plate 26 can be located in the first rotating space 245 of the second support plate 24. The second rotating shaft 20b can be arranged in the rotating shaft hole 264 of the rotating shaft block 262 of the fourth support plate 26 and the rotating shaft hole 2453 of the first rotating space 245 of the second support plate 24. Details are not described herein again.

[0252] Please refer to FIG. 17 and FIG. 18, when the folding mechanism 100 is in the unfolded state, the third support plate 25, the first support plate 23, the second support plate 24 and the fourth support plate 26 are sequentially spliced and jointly form a support surface 100a. At this time, the first support plate 23 and the second support plate 24 are close to each other, and the distance between the first support plate 23 and the second support plate 24 is small. The first support plate 23 and the third support plate 25 are close to each other, and the distance between the first support plate 23 and the third support plate 25 is small. The second support plate 24 and the fourth support plate 26 are close to each other, and the distance between the second support plate 24 and the fourth support plate 26 is small. It can be understood that the explanation about the splicing of the first support plate 23 and the third support plate 25, and the splicing of the second support plate 24 and the fourth support plate 26 can refer to the explanation about the splicing of the first support plate 23 and the second support plate 24. Herein will not be repeated in detail. It can be understood that the top surface 2511 of the third support plate body 251 faces away from the main shaft 1. The top surface 2611 of the fourth support plate body 261 faces away from the main shaft 1.

[0253] In an embodiment, as shown in FIG. 17 and FIG. 18, when the folding mechanism 100 is in the unfolded state, the first support plate 23, the second support plate 24, the third support plate 25 and the fourth support plate 26 are flush. In other words, when the folding mechanism 100 is in the unfolded state, the first support plate 23, the second support plate 24, the third support plate 25 and the fourth support plate 26 are used to make the flexible screen 200 present an unfolded form. At this time, the first support plate 23, the second support plate 24, the third support plate 25 and the fourth support plate 26 can provide flat and strong support for the flexible screen 200 to improve the user's experience of touch operation, picture watching, etc.

[0254] As shown in FIG. 19, exemplarily, when the folding mechanism 100 is in the folded state, the first support plate 23, the second support plate 24, the third support plate 25 and the fourth support plate 26 are located on one side of the main shaft 1, and the first support plate 23 and the second support plate 24 are oppositely arranged, and the third support plate 25 and the fourth support plate 26 are also oppositely arranged. The first support plate 23, the second support plate 24, the third support plate 25, the fourth support plate 26 and the main shaft 1 enclose at least part of the accommodation space 100b.

[0255] Exemplarily, when the folding mechanism 100 is in the folded state, part of the first support plate 23 is located in the inner space 10 of the main shaft 1, and part of the second support plate 24 is located in the inner space 10. At this time, the part of the inner space 10 of the main shaft 1 between the first support plate 23 and the second support plate 24 is released to form part of the accommodation space 100b, thereby improving the space utilization and making the arrangement of components of the electronic device 1000 more compact, which is conducive to the miniaturization of the electronic device 1000.

[0256] As shown in FIG. 19, exemplarily, when the folding mechanism 100 is in the folded state, the third support plate 25 and the fourth support plate 26 are also arranged obliquely relative to the main shaft 1, and the third support plate 25 and the fourth support plate 26 are close to each other in the direction away from the main shaft 1. An included angle is formed between the third support plate 25 and the fourth support plate 26, and the third support plate 25 and the fourth support plate 26 can substantially present an inverted "V" shape. In this way, the second display area 202 of the flexible screen 200 can be better close to each other to the folded state under the action of the first support plate 23, the second support plate 24, the third support plate 25 and the fourth support plate 26, so as to be bent into a water drop shape.

[0257] FIG. 20 is a structural schematic diagram of an embodiment of the first fixing frame 21 and the second fixing frame 22 shown in FIG. 9. FIG. 21 is a structural schematic diagram of the first fixing frame 21 and the second fixing frame 22 shown in FIG. 9 at another angle.

[0258] As shown in FIGS. 20 and 21, the first fixing frame 21 comprises a top surface 211a, a bottom surface 211b, a first side surface 211c and a second side surface 211d. The top surface 211a of the first fixing frame 21 is arranged opposite to the bottom surface 211b. The first side surface 211c of the first fixing frame 21 is arranged opposite to the second side surface 211d. The first side surface 211c and the second side surface 211d of the first fixing frame 21 are located between the top surface 211a and the bottom surface 211b of the first fixing frame 21. At least part of the top surface 211a of the first fixing frame 21 is arranged obliquely relative to the bottom surface 211b of the first fixing frame 21, that is, an included angle is formed between the top surface 211a of the first fixing frame 21 and the bottom surface 211b of the first fixing frame 21. The top surface 211a of the first fixing frame 21 and the bottom surface 211b of the first fixing frame 21 are close to each other in the direction close to the first side surface 211c of the first fixing frame 21.

[0259] As shown in FIGS. 20 and 21, exemplarily, the first fixing frame 21 is provided with an arc-shaped slot 212. The number of the arc-shaped slot 212 can be one or multiple. When the number of the arc-shaped slot 212 is multiple, the multiple arc-shaped slots 212 can be arranged in the Y-axis direction at intervals.

[0260] Exemplarily, the arc-shaped slot 212 of the first fixing frame 21 can form an opening on the top surface 211a of the first fixing frame 21.

[0261] As shown in FIGS. 20 and 21, exemplarily, the first fixing frame 21 is further provided with a first movable space 213. Exemplarily, the first movable space 213 of the first fixing frame 21 can be arranged at intervals with the arc-shaped slot 212 of the first fixing frame 21.

[0262] Exemplarily, the first movable space 213 of the first fixed frame 21 can form an opening on the top surface 211a and the first side surface 211c of the first fixed frame 21. The first movable space 213 of the first fixed frame 21 can be a groove structure. In other embodiments, the first movable space 213 of the first fixed frame 21 can also form an opening on the bottom surface 211b of the first fixed frame 21. The first movable space 213 of the first fixed frame 21 is a through-hole structure.

[0263] As shown in FIGS. 20 and 21, exemplarily, one side wall of the first movable space 213 of the first fixed frame 21 is provided with a first sliding groove 214.

[0264] Exemplarily, in the direction of the second side surface 211d of the first fixed frame 21 towards the first side surface 211c of the first fixed frame 21, the extension direction of the first sliding groove 214 of the first movable space 213 is close to the bottom surface 211b of the first fixed frame 21. It can be understood that the inclined design of the first sliding groove 214 of the first movable space 213 is conducive to reducing the thickness of the folding mechanism 100 and optimizing the mechanism structure. In some other embodiments, the first sliding groove 214 of the first movable space 213 is not strictly limited by the present application.

[0265] In other embodiments, the other side wall of the first movable space 213 of the first fixed frame 21 can also be provided with a first sliding groove 214. The specific embodiments are not limited.

[0266] As shown in FIGS. 20 and 21, exemplarily, the first fixed frame 21 is also provided with a second sliding groove 215. The second sliding groove 215 of the first fixed frame 21 can form an opening on the top surface 211a and the bottom surface 211b of the first fixed frame 21. The second sliding groove 215 of the first fixed frame 21 can be located on one side of the first movable space 213 of the first fixed frame 21.

[0267] Exemplarily, the second sliding groove 215 of the first fixed frame 21 can be arranged obliquely relative to the first side surface 211c of the first fixed frame 21, that is, the extending direction of the second sliding groove 215 of the first fixed frame 21 forms an angle with the first side surface 211c of the first fixed frame 21. The second sliding groove 215 of the first fixed frame 21 can also be arranged obliquely relative to the second side surface 211d of the first fixed frame 21, that is, the extending direction of the second sliding groove 215 of the first fixed frame 21 forms an angle with the second side surface 211d of the first fixed frame 21. In the direction in which the bottom surface 211b of the first fixed frame 21 faces the top surface 211a of the first fixed frame 21, the extending direction of the second sliding groove 215 of the first fixed frame 21 is closer to the first side surface 211c of the first fixed frame 21 than the second side surface 211d of the first fixed frame 21. In other words, the opening of the second sliding groove 215 of the first fixed frame 21 formed in the top surface 211a of the first fixed frame 21 is closer to the first side surface 211c of the first fixed frame 21 than the opening of the second sliding groove 215 of the first fixed frame 21 formed in the bottom surface 211b of the first fixed frame 21.

[0268] As shown in FIG. 20 and FIG. 21, exemplarily, the second sliding groove 215 of the first fixed frame 21 comprises a first sub-groove 2151 and a second sub-groove 2152. The second sub-groove 2152 is connected to the first sub-groove 2151. In the Y-axis direction, the length of the first sub-groove 2151 is greater than the length of the second sub-groove 2152.

[0269] It can be understood that the second fixed frame 22 and the first fixed frame 21 can be the same or similar structure, symmetrical or partially symmetrical structure, or different structure. In the present embodiment, the second fixed frame 22 and the first fixed frame 21 are symmetrical structures, and the basic design of the component structure of the second fixed frame 22, the connection relationship design between components, and the connection relationship design of components and other structures outside the assembly can refer to the related solutions of the first fixed frame 21. For example, the second fixed frame 22 is also provided with an arc-shaped groove 222, a first movable space 223, a first sliding groove 224, and a second sliding groove 225. Meanwhile, the second fixed frame 22 and the first fixed frame 21 are allowed to be slightly different in the detailed structure or position arrangement of components. Details are not described here.

[0270] FIG. 22 is a partial structural schematic diagram III of an embodiment of the folding mechanism 100 shown in FIG. 6. FIG. 23 is a structural schematic diagram of the partial folding mechanism 100 shown in FIG. 22 in a folded state.

[0271] Please refer to FIG. 22 and FIG. 23, and combine FIG. 15, FIG. 16, FIG. 20 and FIG. 21, the third support plate 25 is rotationally connected to the first fixed frame 21.

[0272] Exemplarily, the arc-shaped blocks 253 of the third support plate 25 are arranged in the arc-shaped grooves 212 of the first fixed frame 21. Through relative movement of the two, the third support plate 25 and the first fixed frame 21 are connected through the arc-shaped blocks and the arc-shaped grooves to form a rotating connection structure, that is, the third support plate 25 and the first fixed frame 21 are connected through a virtual shaft.

[0273] It can be understood that when the number of the arc-shaped blocks 253 of the third support plate 25 and the number of the arc-shaped grooves 212 of the first fixed frame 21 are both two, the two arc-shaped blocks 253 of the third support plate 25 are arranged in the two arc-shaped grooves 212 of the first fixed frame 21 one by one.

[0274] In other embodiments, the third support plate 25 can also be connected to the first fixed frame 21 through other structures. The specific embodiments are not limited herein.

[0275] In other embodiments, the third support plate 25 and the first fixed frame 21 can also be connected through a physical shaft. The connection between the second rotating part of the third support plate 25 and the first fixed frame 21 is reliable, the rotating virtual position is small, and the rotating action is accurate and stable.

[0276] In other embodiments, in the rotating connection structure between the third support plate 25 and the first fixed frame 21, all physical shaft connections, all virtual shaft connections, or a combination of physical shaft connections and virtual shaft connections can be used. The specific embodiments are not limited herein.

[0277] Please refer to FIGS. 22 and 23, and combine FIGS. 15, 16, 20 and 21. The fourth support plate 26 is connected to the second fixed frame 22. It can be understood that the connection mode of the fourth support plate 26 and the second fixed frame 22 can refer to the connection mode of the third support plate 25 and the first fixed frame 21. The specific embodiments are not repeated here.

[0278] As shown in FIG. 22, in one embodiment, when the folding mechanism 100 is in the unfolded state, the third support plate 25 covers a part of the first fixed frame 21, and the fourth support plate 26 covers a part of the second fixed frame 22. It can be understood that the top surface 211a of the first fixed frame 21 faces the third support plate 25, the first side surface 211c of the first fixed frame 21 faces the main shaft 1, the top surface 221a of the second fixed frame 22 faces the fourth support plate 26, and the first side surface 221c of the second fixed frame 22 faces the main shaft 1.

[0279] As shown in FIG. 23, in one embodiment, when the folding mechanism 100 is in the folded state, the first fixed frame 21 is located on the side of the third support plate 25 away from the fourth support plate 26, and the second fixed frame 22 is located on the side of the fourth support plate 26 away from the third support plate 25, and the first fixed frame 21 and the second fixed frame 22 are close to each other.

[0280] FIG. 24 is a structural schematic diagram of one embodiment of the first connecting piece 27 and the second connecting piece 28 shown in FIG. 9.

[0281] As shown in FIG. 24, the first connecting piece 27 comprises a rotating end 271, a connecting segment 272 and a sliding end 273 connected in sequence. The connecting segment 272 of the first connecting piece 27 is connected between the rotating end 271 and the sliding end 273 of the first connecting piece 27. The first connecting piece 27 can be an integrally formed structural member to have higher structural strength. In other embodiments, the first connecting piece 27 can not comprise the connecting segment 272.

[0282] Exemplarily, the rotating end 271 of the first connecting piece 27 is provided with a rotating shaft hole 2711. The rotating end 271 of the first connecting piece 27 can be in a cylindrical shape. In other embodiments, the rotating end 271 of the first connecting piece 27 can also adopt other structures.

[0283] Exemplarily, the sliding end 273 of the first connecting piece 27 can be substantially in the shape of a sliding block. In other embodiments, the sliding end 273 of the first connecting piece 27 can also adopt other structures.

[0284] Exemplarily, the connecting segment 272 of the first connecting piece 27 comprises a first part 2721 and a second part 2722. The first part 2721 connects the rotating end 271 of the first connecting piece 27 and the sliding end 273 of the first connecting piece 27. The second part 2722 protrudes relative to one side of the rotating end 271 of the first connecting piece 27. It can be understood that FIG. 2 only shows that the second part 2722 protrudes in the negative direction of the Y axis relative to the rotating end 271 of the first connecting piece 27. In other embodiments, the second part 2722 can also protrude in other directions relative to the rotating end 271 of the first connecting piece 27, for example, the second part 2722 can protrude in the negative direction of the Z axis relative to the rotating end 271 of the first connecting piece 27.

[0285] Exemplarily, the second part 2722 of the connecting segment 272 of the first connecting member 27 is provided with a rotating space 274. The rotating space 274 of the first connecting member 27 comprises oppositely arranged first and second side walls 2741 and 2742. The first and second side walls 2741 and 2742 of the rotating space 274 of the first connecting member 27 are each provided with a rotating shaft hole 2743. The rotating shaft hole 2743 of the second side wall 2742 of the rotating space 274 of the first connecting member 27 is oppositely arranged with the rotating shaft hole 2743 of the first side wall 2741 of the rotating space 274 of the first connecting member 27. In other embodiments, when the connecting segment 272 of the first connecting member 27 adopts other structures, the rotating space 274 of the first connecting member 27 can also be arranged at other positions of the connecting segment 272 of the first connecting member 27.

[0286] It can be understood that the second connecting member 28 can be of the same or similar structure, a symmetrical or partially symmetrical structure, or a different structure from the first connecting member 27. In the present embodiment, the second connecting member 28 is of a symmetrical structure with the first connecting member 27. The basic design of the component structure of the second connecting member 28, the connection relationship design between the components, and the connection relationship design of the components with other structures outside the assembly can be referred to the related solutions of the first connecting member 27. For example, the second connecting member 28 comprises a rotating end 281, a connecting segment 282, and a sliding end 283. The connecting segment 282 of the second connecting member 28 is provided with a rotating space 284, etc. Meanwhile, the second connecting member 28 and the first connecting member 27 are allowed to be slightly different in the detailed structure or position arrangement of the components. Details are not described herein again.

[0287] FIG. 25 is a partially exploded schematic view III of one embodiment of the folding mechanism 100 shown in FIG. 6. FIG. 26 is a partially structural schematic view IV of one embodiment of the folding mechanism 100 shown in FIG. 6. FIG. 27 is a partially sectional view of the folding mechanism 100 shown in FIG. 26 in a folded state.

[0288] Referring to FIGS. 25 to 27, in combination with FIGS. 8 and 24, the rotating end 271 of the first connecting member 27 is rotatably connected to the main shaft 1.

[0289] Exemplarily, the rotating end 271 of the first connecting member 27 can be located in the first rotating space 13 of the main shaft 1. The rotating shaft hole 2711 of the rotating end 271 of the first connecting member 27 can be located between the rotating shaft hole 133 of the first side wall 131 of the first rotating space 13 of the main shaft 1 and the rotating shaft hole 133 of the second side wall 132 of the first rotating space 13 of the main shaft 1. The rotating shaft hole 2711 of the rotating end 271 of the first connecting member 27 is oppositely arranged with the rotating shaft hole 133 of the first side wall 131 of the first rotating space 13 of the main shaft 1 and the rotating shaft hole 133 of the second side wall 132 of the first rotating space 13 of the main shaft 1.

[0290] Exemplarily, the first connecting assembly 2 further comprises a third rotating shaft 20c. The third rotating shaft 20c sequentially passes through the rotating shaft hole 133 of the first side wall 131 of the first rotating space 13 of the main shaft 1, the rotating shaft hole 2711 of the rotating end 271 of the first connecting piece 27, and the rotating shaft hole 133 of the second side wall 132 of the first rotating space 13 of the main shaft 1. In an embodiment, the two ends of the third rotating shaft 20c can be respectively fixed in the rotating shaft hole 133 of the first side wall 131 of the first rotating space 13 of the main shaft 1 and the rotating shaft hole 133 of the second side wall 132 of the first rotating space 13 of the main shaft 1. The middle part of the third rotating shaft 20c can rotate relative to the hole wall of the rotating shaft hole 2711 of the rotating end 271 of the first connecting piece 27.

[0291] In other embodiments, the rotating end 271 of the first connecting piece 27 can also be rotatably connected to the main shaft 1 in other rotating modes. For example, the rotating end 271 of the first connecting piece 27 and the main shaft 1 can be rotatably connected through an arc-shaped block and an arc-shaped groove to form a rotating connection structure, that is, the rotating end 271 of the first connecting piece 27 and the main shaft 1 can be rotatably connected through a virtual shaft. It can be understood that the structure rotatably connected through the virtual shaft is simple, occupies 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 are more easily realized thin and light.

[0292] Please refer to FIGS. 25-27, and in combination with FIGS. 8 and 24, the rotating end 281 of the second connecting piece 28 is rotatably connected to the main shaft 1. It can be understood that the connection mode of the rotating end 281 of the second connecting piece 28 and the main shaft 1 can refer to the connection mode of the rotating end 271 of the first connecting piece 27 and the main shaft 1. For example, the rotating end 281 of the second connecting piece 28 is rotatably connected to the main shaft 1 through a fourth rotating shaft 20d. Details are not repeated here.

[0293] Please refer to FIGS. 25-27, and in combination with FIGS. 20, 21 and 24, the sliding end 273 of the first connecting piece 27 is slidably connected to the first fixed frame 21.

[0294] Exemplarily, a part of the sliding end 273 of the first connecting piece 27 is located in the first movable space 213 of the first fixed frame 21, and a part is located in the first sliding groove 214 of the first movable space 213 of the first fixed frame 21. It can be understood that the sliding end 273 of the first connecting piece 27 can slide in the first movable space 213 of the first fixed frame 21 and the first sliding groove 214 of the first movable space 213.

[0295] In other embodiments, the sliding end 273 of the first connecting piece 27 can also be slidably connected to the first fixed frame 21 in other sliding modes.

[0296] Referring to FIGS. 25-27, in combination with FIGS. 20, 21 and 24, the sliding end 283 of the second connecting member 28 is slidingly connected to the second fixed frame 22. It can be understood that the connection between the sliding end 283 of the second connecting member 28 and the second fixed frame 22 can refer to the connection between the sliding end 273 of the first connecting member 27 and the first fixed frame 21. For example, a portion of the sliding end 283 of the second connecting member 28 slides in the first active space 223 of the second fixed frame 22, and another portion of the sliding end 283 of the second connecting member 28 slides in the first sliding slot 224 of the first active space 223 of the second fixed frame 22. Details are not repeated here.

[0297] As shown in FIG. 26, exemplarily, when the folding mechanism 100 is in the unfolded state, most of the sliding end 273 of the first connecting member 27 slides into the first active space 213 and the first sliding slot 214 of the first fixed frame 21, and most of the sliding end 283 of the second connecting member 28 slides into the first active space 223 and the first sliding slot 224 of the second fixed frame 22.

[0298] During the process of switching the folding mechanism 100 from the unfolded state to the folded state, the sliding end 273 of the first connecting member 27 slides relative to the first fixed frame 21 in a direction away from the first fixed frame 21, and the sliding end 283 of the second connecting member 28 slides relative to the second fixed frame 22 in a direction away from the second fixed frame 22.

[0299] As shown in FIG. 26, exemplarily, when the folding mechanism 100 is in the folded state, a portion of the sliding end 273 of the first connecting member 27 slides out of the first active space 213 and the first sliding slot 214 of the first fixed frame 21, and a portion of the sliding end 283 of the second connecting member 28 slides out of the first active space 223 and the first sliding slot 224 of the second fixed frame 22.

[0300] In an embodiment, the folding mechanism 100 further comprises a synchronization member (not shown). A portion of the synchronization member is movably connected to the first connecting member 27, and another portion of the synchronization member is movably connected to the second connecting member 28. The synchronization member can make the first connecting member 27 and the second connecting member 28 keep synchronous rotation during the movement of the folding mechanism 100. For example, the synchronization member can be a gear set. Details of this embodiment are not limited.

[0301] In an embodiment, the folding mechanism 100 further comprises a damping member (not shown). The damping member can be arranged on the main shaft 1. The damping member can apply a damping force to the first connecting member 27 and the second connecting member 28, thereby providing a certain resistance during the unfolding of the folding mechanism 100 to enter the unfolded state or during the folding of the folding mechanism 100 to release the unfolded state, so that the user can experience a better mechanism operation feeling. The damping member can be a cam structure or the like. Details of this embodiment are not limited.

[0302] Figure 28 is a partially exploded schematic view IV of an embodiment of the folding mechanism 100 shown in Figure 6. Figure 29 is a partially structural schematic view V of an embodiment of the folding mechanism 100 shown in Figure 6. Figure 30 is a partially structural schematic view VI of an embodiment of the folding mechanism 100 shown in Figure 6. Figure 31 is a partially sectional view of an embodiment of the folding mechanism 100 shown in Figure 30 at the line E-E. Figure 32 is a sectional view of the folding mechanism 100 shown in Figure 30 in a folded state.

[0303] As shown in Figures 28 to 32, exemplary, the first revolute pair 29a comprises a bracket 291a, a first pin shaft 292a and a second pin shaft 293a.

[0304] Exemplary, the bracket 291a is provided with a first pin shaft hole 2911a and a second pin shaft hole 2912a which are spaced apart. The first pin shaft 292a can pass through the first pin shaft hole 2911a of the bracket 291a. The second pin shaft 293a can pass through the second pin shaft hole 2912a of the bracket 291a. The bracket 291a is rotatably connected to the first pin shaft 292a and the second pin shaft 293a. In other words, the bracket 291a can rotate relative to the first pin shaft 292a and the second pin shaft 293a.

[0305] Exemplary, the bracket 291a can be substantially dumbbell-shaped.

[0306] As shown in Figures 28 to 32, exemplary, the first support plate 23 is movably connected to the first connecting member 27 through the first revolute pair 29a. In an embodiment, the first support plate 23 is movably connected to the connecting segment 272 of the first connecting member 27 through the first revolute pair 29a.

[0307] In other embodiments, the connection between the first support plate 23 and the first connecting member 27 is not limited in particular.

[0308] As shown in Figures 28 to 32, a part of the bracket 291a is located in the rotation space 274 of the connecting segment 272 of the first connecting member 27. The first pin shaft hole 2911a of the bracket 291a is located between the rotation shaft hole 2743 of the first side wall 2741 of the rotation space 274 of the first connecting member 27 and the rotation shaft hole 2743 of the second side wall 2742 of the rotation space 274 of the first connecting member 27. The first pin shaft hole 2911a of the bracket 291a is oppositely arranged relative to the rotation shaft hole 2743 of the first side wall 2741 of the rotation space 274 of the first connecting member 27 and the rotation shaft hole 2743 of the second side wall 2742 of the rotation space 274 of the first connecting member 27.

[0309] Exemplarily, the first pin shaft 292a passes through the rotation shaft hole 2743 of the first side wall 2741 of the rotation space 274 of the first connecting piece 27, the first pin shaft hole 2911a of the bracket 291a, and the rotation shaft hole 2743 of the second side wall 2742 of the rotation space 274 of the first connecting piece 27 in sequence. In an embodiment, the first connecting piece 27 and the bracket 291a can rotate relative to the first pin shaft 292a.

[0310] As shown in FIGS. 28-32, a portion of the bracket 291a is located in the second rotation space 236 of the first support plate 23. The second pin shaft hole 2912a of the bracket 291a is located between the rotation shaft hole 2363 of the first side wall 2361 of the second rotation space 236 of the first support plate 23 and the rotation shaft hole 2363 of the second side wall 2362 of the second rotation space 236 of the first support plate 23. The second pin shaft hole 2912a of the bracket 291a is oppositely arranged relative to the rotation shaft hole 2363 of the first side wall 2361 of the second rotation space 236 of the first support plate 23 and the rotation shaft hole 2363 of the second side wall 2362 of the second rotation space 236 of the first support plate 23.

[0311] Exemplarily, the second pin shaft 293a passes through the rotation shaft hole 2363 of the first side wall 2361 of the second rotation space 236 of the first support plate 23, the second pin shaft hole 2912a of the bracket 291a, and the rotation shaft hole 2363 of the second side wall 2362 of the second rotation space 236 of the first support plate 23 in sequence. In an embodiment, the first support plate 23 and the bracket 291a can rotate relative to the second pin shaft 293a.

[0312] As shown in FIGS. 28-32, exemplarily, the second support plate 24 is connected to the second connecting piece 28 through the second rotation pair 29b.

[0313] It can be understood that the connection mode of the second support plate 24 and the second rotation pair 29b and the connection mode of the second rotation pair 29b and the second connecting piece 28 can refer to the connection mode of the first support plate 23 and the first rotation pair 29a and the connection mode of the first rotation pair 29a and the first connecting piece 27. Details are not described here. In addition, the second rotation pair 29b and the first rotation pair 29a can be the same or similar structure, symmetric or partially symmetric structure, or different structure. In the embodiment, the second rotation pair 29b and the first rotation pair 29a are symmetric structures, the basic design of the component structure of the second rotation pair 29b, the connection relationship design between the components, and the connection relationship design of the components and other structures outside the assembly, can refer to the related schemes of the first rotation pair 29a, while allowing the second rotation pair 29b and the first rotation pair 29a to be slightly different in the detailed structure or position arrangement of the components. Details are not described here.

[0314] Fig. 33 is a schematic diagram of an embodiment of the connection relationship between the partial structure of the first connecting assembly 2 and the main shaft 1 shown in Fig. 7.

[0315] Please refer to Fig. 33, and in combination with Figs. 8 to 32, the first support plate 23 is rotationally connected to the main shaft 1, the third support plate 25 is rotationally connected to the first support plate 23, and the third support plate 25 is rotationally connected to the first fixed frame 21. In addition, the rotating end 271 of the first connecting piece 27 is rotationally connected to the main shaft 1. The sliding end 273 of the first connecting piece 27 is slidingly connected to the first fixed frame 21. In addition, the first support plate 23 is also rotationally connected to the first connecting piece 27 through the first rotational pair 29a. Among them, the rotational axis of the first support plate 23 rotationally connected to the main shaft 1 is defined as the first rotational axis P1. The rotational axis of the first connecting piece 27 rotationally connected to the main shaft 1 is the second rotational axis P2. The rotational axis of the first support plate 23 rotationally connected to the first rotational pair 29a is the third rotational axis P3. The rotational axis of the third support plate 25 rotationally connected to the first support plate 23 is the fourth rotational axis P4. The rotational axis of the first connecting piece 27 rotationally connected to the first rotational pair 29a is the fifth rotational axis P5. The rotational axis of the third support plate 25 rotationally connected to the first fixed frame 21 is the sixth rotational axis P6. It can be understood that in Fig. 33, the connection between two components represented by a solid line indicates that the connection between the two components is necessary. The connection position of the two components is schematically represented by a circle, and the connection relationship between the two components is rotational connection. If relevant schematic diagrams appear below, please refer to the relevant explanations here.

[0316] In the present embodiment, the third rotational axis P3 and the fourth rotational axis P4 can be on the same straight line, that is, the third rotational axis P3 and the fourth rotational axis P4 are coaxially arranged. In this way, the third support plate 25 can be connected to the first rotational pair 29a through the first support plate 23. It can be understood that compared with the scheme of setting other connection structures to connect the third support plate 25 to the first rotational pair 29a through the first support plate 23, the present embodiment sets the third rotational axis P3 and the fourth rotational axis P4 coaxially arranged, which has a simple assembly method and can save parts to simplify the structure. In other embodiments, the third rotational axis P3 and the fourth rotational axis P4 can not be on the same straight line. At this time, other connection structures can be set to connect the third support plate 25 to the first rotational pair 29a through the first support plate 23. For example, the third support plate 25 is directly connected to the first rotational pair 29a. The specific details will be introduced below in combination with the relevant drawings.

[0317] In the embodiment, the folding mechanism 100 can be a slider-crank linkage mechanism. The primary motion of the folding mechanism 100 can be composed of a first motion and a second motion. The first motion can be a motion mode of a four-bar linkage mechanism composed of the main shaft 1, the first support plate 23, the first connecting piece 27, and the first rotary pair 29a. In addition, the second motion can be a motion mode of a slider-crank linkage mechanism composed of the first fixed frame 21, the third support plate 25, the first support plate 23, and the first rotary pair 29a. The folding mechanism 100 can pass through the first motion and the second motion, so that the freedom of the first fixed frame 21 relative to the main shaft 1 can be 1 during the unfolding or folding of the folding mechanism 100, so that the motion trajectory of the first fixed frame 21 relative to the main shaft 1 can be determined. Specifically, during the unfolding or folding of the folding mechanism 100, the motion mode of the first support plate 23, the third support plate 25, the first connecting piece 27, and the first rotary pair 29a can constrain the motion trajectory of the first fixed frame 21, so that the motion trajectory of the first fixed frame 21 relative to the main shaft 1 can be determined. In this way, during the change from the unfolded state to the folded state of the folding mechanism 100, the first support plate 23, the third support plate 25, the first connecting piece 27, and the first rotary pair 29a can pull the first fixed frame 21 back to be close to the main shaft 1. During the change from the folded state to the unfolded state of the folding mechanism 100, the first support plate 23, the third support plate 25, the first connecting piece 27, and the first rotary pair 29a can push the first fixed frame 21 away from the main shaft 1.

[0318] Similarly, by setting the second support plate 24 rotationally connected with the main shaft 1, the fourth support plate 26 rotationally connected with the second support plate 24, the fourth support plate 26 rotationally connected with the second fixed frame 22, the rotation end 281 of the second connecting piece 28 rotationally connected with the main shaft 1, the sliding end 283 of the second connecting piece 28 slidingly connected with the second fixed frame 22, and the second support plate 24 rotationally connected with the second connecting piece 28 through the second rotation pair, the movement mode of the four-bar linkage mechanism composed of the main shaft 1, the second support plate 24, the second connecting piece 28, and the second rotation pair can form the first-level movement of the folding mechanism 100. The movement mode of the slider linkage mechanism composed of the second support plate 24, the fourth support plate 26, the second fixed frame 22, and the second rotation pair 29b can form the second-level movement of the folding mechanism 100. At this time, the folding mechanism 100 can realize the first-level movement and the second-level movement, so that the degree of freedom of the movement of the second fixed frame 22 relative to the main shaft 1 during the unfolding or folding of the folding mechanism 100 can be 1, and the movement trajectory of the second fixed frame 22 relative to the main shaft 1 can be determined. In this way, during the change from the flat state to the folded state of the folding mechanism 100, the second support plate 24, the fourth support plate 26, the second connecting piece 28, and the second rotation pair can pull the second fixed frame 22 back to be close to the main shaft 1. During the change from the folded state to the flat state of the folding mechanism 100, the second support plate 24, the fourth support plate 26, the second connecting piece 28, and the second rotation pair can push the second fixed frame 22 out to be away from the main shaft 1.

[0319] FIG. 34 is a partial cross-sectional view of one embodiment of the electronic device 1000 shown in FIG. 5 at line F-F. FIG. 35 is a partial cross-sectional view of one embodiment of the electronic device 1000 shown in FIG. 3 at line G-G.

[0320] Referring to FIGS. 34 and 35, in combination with FIGS. 8 to 32, the first fixed frame 21 can be fixedly connected with the first housing 300. The second fixed frame 22 can be fixedly connected with the second housing 400. For example, the first fixed frame 21 can be connected with the first housing 300 by fasteners. The second fixed frame 22 can be connected with the second housing 400 by fasteners. The fasteners include, but are not limited to, screws, bolts, rivets, pins, etc. It can be understood that, since the first fixed frame 21 can be fixedly connected with the first housing 300, the first housing 300 can move with the first fixed frame 21, and the folding mechanism 100 can control the movement trajectory of the first housing 300 by controlling the movement trajectory of the first fixed frame 21. In addition, since the second fixed frame 22 can be fixedly connected with the second housing 400, the second housing 400 can move with the second fixed frame 22, and the folding mechanism 100 can control the movement trajectory of the second housing 400 by controlling the movement trajectory of the second fixed frame 22.

[0321] It can be understood that, since the first fixed frame 21 is fixedly connected to the first shell 300, the first support plate 23, the third support plate 25, the first connecting piece 27 and the first rotation pair 29a can pull the first fixed frame 21 back to be close to the main shaft 1, and can also push the first fixed frame 21 out to be away from the main shaft 1, so that the first fixed frame 21 can pull the first shell 300 back to be close to the main shaft 1, and can also push the first shell 300 out to be away from the main shaft 1, that is, the first fixed frame 21 can drive the first shell 300 to realize inward pulling and outward pushing movement. Similarly, since the second fixed frame 22 can be fixedly connected to the second shell 400, the second support plate 24, the fourth support plate 26, the second connecting piece 28 and the second rotation pair can pull the second fixed frame 22 back to be close to the main shaft 1, and can also push the second fixed frame 22 out to be away from the main shaft 1, so that the second fixed frame 22 can pull the second shell 400 back to be close to the main shaft 1, and can also push the second shell 400 out to be away from the main shaft 1, that is, the second fixed frame 22 can drive the second shell 400 to realize inward pulling and outward pushing movement.

[0322] It can be understood that, when the electronic device 1000 switches from the unfolded state to the folded state, the first shell 300 and the second shell 400 approach each other, the first shell 300 can drive the first fixed frame 21 to rotate relative to the main shaft 1 through the first support plate 23, the third support plate 25, the first connecting piece 27 and the first rotation pair 29a, and the second shell 400 can drive the second fixed frame 22 to rotate relative to the main shaft 1 through the second support plate 24, the fourth support plate 26, the second connecting piece 28 and the second rotation pair. During the relative unfolding of the first shell 300 and the second shell 400, the first fixed frame 21 can drive the first shell 300 to move away from the main shaft 1, and the second fixed frame 22 can drive the second shell 400 to move away from the main shaft 1. That is, the folding mechanism 100 can realize the shell inward pulling movement during the change from the unfolded state to the folded state, and the shell outward pushing movement during the change from the folded state to the unfolded state. Therefore, during the unfolding or folding process, the folding mechanism 100 can reduce the risk of pulling or pressing the flexible screen 200, so as to protect the flexible screen 200, improve the reliability of the flexible screen 200, and prolong the service life of the flexible screen 200 and the electronic device 1000.

[0323] In the embodiment, when the electronic device 1000 is in the unfolded state, the first support plate 23, the second support plate 24, the third support plate 25, and the fourth support plate 26 of the folding mechanism 100 can jointly form a support surface 100a for supporting the second display area 202 of the flexible screen 200. At this time, the flexible screen 200 is less likely to be depressed under the pressing of a user, which is conducive to improving the service life and reliability of the flexible screen 200 and also makes the light and shadow of the flexible screen 200 better. Therefore, the product competitiveness of the folding mechanism 100 of the embodiment is better.

[0324] It can be understood that, in an embodiment, when the electronic device 1000 is in the unfolded state, the first support plate 23 and the second support plate 24 jointly form a support surface together with the main shaft 1 for supporting the second display area 202 of the flexible screen 200. In this scheme, since the main shaft 1 needs to be connected with the first support plate 23 and the second support plate 24 through a plurality of connecting pieces, the main shaft 1 needs to be provided with a plurality of avoiding spaces for avoiding the connecting pieces or other components. The avoiding spaces can be grooves or through holes. In this way, the surface of the main shaft 1 for forming the support surface is prone to pits, that is, the flatness of the support surface is poor. At this time, the flexible screen 200 is prone to be depressed under the pressing of a user, which leads to problems such as failure of the flexible screen 200 and is not conducive to improving the service life and reliability of the flexible screen 200. In the embodiment, when the electronic device 1000 is in the unfolded state, the first support plate 23, the second support plate 24, the third support plate 25, and the fourth support plate 26 of the folding mechanism 100 can jointly form a support surface 100a for supporting the second display area 202 of the flexible screen 200. At this time, the embodiment can no longer support the second display area 202 of the flexible screen 200 through the main shaft 1, thereby avoiding the problems such as failure of the flexible screen 200 caused by poor flatness of the main shaft 1. In other words, the service life and reliability of the flexible screen 200 of the electronic device 1000 in the unfolded state are better.

[0325] In the embodiment, since the first support plate 23, the second support plate 24, the third support plate 25, and the fourth support plate 26 have fewer connection positions with other structures and the part fitting relationship is relatively simple, the first support plate 23, the second support plate 24, the third support plate 25, and the fourth support plate 26 have fewer holes and the structure is relatively regular. In this way, the support surface 100a jointly formed by the first support plate 23, the second support plate 24, the third support plate 25, and the fourth support plate 26 has fewer holes and smaller gaps between adjacent support plates, which is conducive to the flatness of the support surface 100a and further improves the service life and reliability of the flexible screen 200.

[0326] In the embodiment, when the electronic device 1000 is in the folded state, the first support plate 23, the second support plate 24, the third support plate 25, and the fourth support plate 26 can jointly form the accommodation space 100b with the main shaft 1 to accommodate the second display area 202 of the flexible screen 200. It can be understood that during the folding of the electronic device 1000, the first support plate 23, the second support plate 24, the third support plate 25, and the fourth support plate 26 can automatically avoid to form the accommodation space 100b. Among them, the first support plate 23, the second support plate 24, the third support plate 25, and the fourth support plate 26 can stabilize the folding action of the flexible screen 200 and have small extrusion force, thereby being beneficial to reduce the risk of damage of the flexible screen 200 due to excessive extrusion of the folding mechanism 100, so that the reliability of the flexible screen 200 is high. In addition, when the electronic device 1000 is in the folded state, the first support plate 23, the second support plate 24, the third support plate 25, and the fourth support plate 26 can stably support the second display area 202 of the flexible screen 200, thereby reducing the damage risk of the flexible screen 200 due to freedom, and further improving the service life and reliability of the flexible screen 200. Therefore, the product competitiveness of the folding mechanism 100 of the embodiment is better.

[0327] FIG. 36 is a partial structural schematic diagram seven of an embodiment of the folding mechanism 100 shown in FIG. 6. FIG. 37 is a partial cross-sectional view of an embodiment of the partial folding mechanism 100 shown in FIG. 36 at the H-H line. FIG. 38 is a schematic diagram of an embodiment of the connection relationship between the partial structure of the first connecting assembly 2 and the main shaft 1.

[0328] As shown in FIGS. 36 to 38, the first support plate 23 is also slidingly connected with the first fixed frame 21. It can be understood that in FIG. 38, the connection between the two components through the dashed line indicates that the connection relationship between the two components is additionally added, that is, it is not necessary. In addition, the sliding connection relationship between the first support plate 23 and the first fixed frame 21 is shown by two different direction blocks. If there is a related schematic diagram below, please refer to the related explanation here.

[0329] Exemplarily, the sliding block 233 of the first support plate 23 is arranged in the second sliding groove 215 of the first fixed frame 21. Through the relative movement of the two, the first support plate 23 and the first fixed frame 21 form a sliding connection structure through the cooperation of the sliding block and the sliding groove. In other embodiments, the first support plate 23 can also be slidingly connected with the first fixed frame 21 through other sliding modes.

[0330] In the embodiment, the first support plate 23 is also slidably connected to the first fixing frame 21, so that the movement mode of the first support plate 23, the third support plate 25 (see FIGS. 34 and 35), the first connecting piece 27 and the first revolute pair 29a can better constrain the movement trajectory of the first fixing frame 21 during unfolding or folding of the folding mechanism 100, so that the movement trajectory of the first fixing frame 21 relative to the main shaft 1 is more accurate. In this way, the first support plate 23, the second support plate 24, the third support plate 25 and the fourth support plate 26 can stabilize the folding action of the flexible screen 200 with less extrusion force, thereby reducing the risk of damage to the flexible screen 200 due to excessive extrusion of the folding mechanism 100, and making the reliability of the flexible screen 200 higher.

[0331] Exemplarily, the first connecting portion 2331 of the sliding block 233 of the first support plate 23 is arranged in the first sub-slot 2151 of the second sliding slot 215 of the first fixing frame 21. The second connecting portion 2332 of the sliding block 233 of the first support plate 23 is arranged in the second sub-slot 2152 of the second sliding slot 215 of the first fixing frame 21. It can be understood that, since the length of the first connecting portion 2331 is greater than the length of the second connecting portion 2332 in the Y-axis direction, and the length of the first sub-slot 2151 is greater than the length of the second sub-slot 2152, the movement direction of the sliding block 233 of the first support plate 23 can be better guided through the cooperation of the first connecting portion 2331 and the first sub-slot 2151, and the cooperation of the second connecting portion 2332 and the second sub-slot 2152, so that the first support plate 23, the second support plate 24, the third support plate 25 and the fourth support plate 26 can stabilize the folding action of the flexible screen 200 with less extrusion force, thereby reducing the risk of damage to the flexible screen 200 due to excessive extrusion of the folding mechanism 100, and making the reliability of the flexible screen 200 higher.

[0332] It can be understood that, by arranging the second sliding slot 215 of the first fixing frame 21 to be inclined relative to the first side surface 211c (or the second side surface 211d) of the first fixing frame 21, when the first fixing frame 21 cooperates with the first support plate 23, the first fixing frame 21 and the first support plate 23 can form a cooperation structure of oblique sliding slots, and when the electronic device 1000 falls or is impacted, the pressure applied by the first housing 300 to the first fixing frame 21. At this time, the first fixing frame 21 can distribute the energy of the falling impact to the first support plate 23 and the main shaft 1. In this way, the falling impact performance of the folding mechanism 100 is better, thereby facilitating the improvement of the service life and reliability of the electronic device 1000.

[0333] Exemplarily, the second support plate 24 is also slidingly connected with the second fixing frame 22. It can be understood that the connection manner of the second support plate 24 with the second fixing frame 22 can refer to the connection manner of the first support plate 23 with the first fixing frame 21. Here, the specific description is not repeated.

[0334] FIG. 39 is a schematic diagram of another embodiment of the connection relationship between the partial structure of the first connecting assembly 2 and the main shaft 1.

[0335] As shown in FIG. 39, the first support plate 23 is also rotatably connected with the first fixing frame 21. It can be understood that in the schematic diagram of FIG. 39, the connection relationship between the first support plate 23 and the first fixing frame 21 is schematically represented by a dashed line. In addition, the rotatable connection between the first support plate 23 and the first fixing frame 21 is schematically represented by a small circle in a block.

[0336] It can be understood that by setting the first support plate 23 to be rotatably connected with the first fixing frame 21, when the electronic device 1000 falls or collides, the pressure applied by the first housing 300 to the first fixing frame 21. At this time, the first fixing frame 21 can distribute the energy of the falling impact to the first support plate 23 and the main shaft 1. In this way, the falling impact performance of the folding mechanism 100 is better, thereby being conducive to improving the service life and reliability of the electronic device 1000.

[0337] Exemplarily, the second support plate 24 is also rotatably connected with the second fixing frame 22. It can be understood that the connection manner of the second support plate 24 with the second fixing frame 22 can refer to the connection manner of the first support plate 23 with the first fixing frame 21. Here, the specific description is not repeated.

[0338] The foregoing introduces a specific embodiment of the folding mechanism 100. As can be known from the foregoing, please refer to FIG. 33, and in combination with FIGS. 8-32, by setting the first support plate 23 rotatably connected with the main shaft 1, the third support plate 25 rotatably connected with the first support plate 23, the third support plate 25 rotatably connected with the first fixed frame 21, the rotating end 271 of the first connecting piece 27 rotatably connected with the main shaft 1, the sliding end 273 of the first connecting piece 27 slidably connected with the first fixed frame 21, and the first support plate 23 further rotatably connected with the first connecting piece 27 through the first rotary pair 29a, the movement mode of the first support plate 23, the third support plate 25, the first connecting piece 27 and the first rotary pair 29a is used to constrain the movement track of the first fixed frame 21, and then the movement track of the first fixed frame 21 relative to the main shaft 1 can be determined. Similarly, the second support plate 24, the fourth support plate 26 and the second connecting piece 28 are used to constrain the movement track of the second fixed frame 22, and then the movement track of the second fixed frame 22 relative to the main shaft 1 can be determined. In the following, several specific embodiments of folding structures will be introduced again in combination with relevant drawings. The folding mechanism 100 of the present embodiment can also make the freedom degree of the movement of the first fixed frame 21 and the second fixed frame 22 relative to the main shaft 1 be 1, that is, the movement track of the first fixed frame 21 and the second fixed frame 22 relative to the main shaft 1 can be determined. It can be understood that the technical contents same as most of the foregoing will not be described in detail again.

[0339] FIG. 40 is a schematic diagram of another embodiment of the connection relationship between the partial structure of the first connecting assembly 2 and the main shaft 1.

[0340] The first support plate 23 is rotationally connected with the main shaft 1, the third support plate 25 is rotationally connected with the first support plate 23, and the third support plate 25 is rotationally connected with the first fixed frame 21. In addition, the rotating end 271 of the first connecting piece 27 is rotationally connected with the main shaft 1. The sliding end 273 of the first connecting piece 27 is slidingly connected with the first fixed frame 21. In addition, the first support plate 23 is also slidingly connected with the first fixed frame 21. It can be understood that the manner in which the first support plate 23 of the present embodiment is rotationally connected with the main shaft 1, the manner in which the third support plate 25 is rotationally connected with the first support plate 23, the manner in which the third support plate 25 is rotationally connected with the first fixed frame 21, the manner in which the rotating end 271 of the first connecting piece 27 is rotationally connected with the main shaft 1, the manner in which the sliding end 273 of the first connecting piece 27 is slidingly connected with the first fixed frame 21, and the manner in which the first support plate 23 is slidingly connected with the first fixed frame 21 can all refer to the related content and related drawings (Figures 8 to 37) in the foregoing. Here, specific descriptions are not repeated. In addition, different from the foregoing, the first support plate 23 of the present embodiment is no longer rotationally connected with the first connecting piece 27 through the first rotational pair 29a, but is directly slidingly connected with the first fixed frame 21. The first connecting piece 27 of the present embodiment can not include the connecting segment 272. Of course, the first connecting piece 27 of the present embodiment can continue to include the connecting segment 272.

[0341] Wherein, the rotational axis of the first support plate 23 rotationally connected with the main shaft 1 is defined as the first rotational axis P1. The rotational axis of the first connecting piece 27 rotationally connected with the main shaft 1 is defined as the second rotational axis P2. The rotational axis of the third support plate 25 rotationally connected with the first support plate 23 is defined as the third rotational axis P3. The rotational axis of the third support plate 25 rotationally connected with the first fixed frame 21 is defined as the fourth rotational axis P4.

[0342] In the embodiment, the folding mechanism 100 can be a slider-linkage mechanism. The main movement of the folding mechanism 100 can be composed of a first movement and a second movement. The first movement can be the movement mode of the slider-linkage mechanism composed of the main shaft 1, the first support plate 23, the first connecting piece 27, and the first fixed frame 21. In addition, the second movement can be the movement mode of the slider-linkage mechanism composed of the first support plate 23, the third support plate 25, and the first fixed frame 21. The folding mechanism 100 can move through the first movement and the second movement, so that the freedom of the first fixed frame 21 relative to the main shaft 1 is 1 during the unfolding or folding of the folding mechanism 100, so that the movement trajectory of the first fixed frame 21 relative to the main shaft 1 can be determined. Specifically, during the unfolding or folding of the folding mechanism 100, the movement mode of the first support plate 23, the third support plate 25, and the first connecting piece 27 can constrain the movement trajectory of the first fixed frame 21, so that the movement trajectory of the first fixed frame 21 relative to the main shaft 1 can be determined. In this way, during the change from the flat state to the folded state of the folding mechanism 100, the first support plate 23, the third support plate 25, and the first connecting piece 27 can pull the first fixed frame 21 back to be close to the main shaft 1. During the change from the folded state to the flat state of the folding mechanism 100, the first support plate 23, the third support plate 25, and the first connecting piece 27 can push the first fixed frame 21 out to be away from the main shaft 1.

[0343] Similarly, as shown in FIGS. 31 and 32, during the unfolding or folding of the folding mechanism 100, the movement mode of the second support plate 24, the fourth support plate 26, and the second connecting piece 28 can constrain the movement trajectory of the second fixed frame 22, so that the movement trajectory of the second fixed frame 22 relative to the main shaft 1 can be determined. In this way, during the change from the flat state to the folded state of the folding mechanism 100, the second support plate 24, the fourth support plate 26, and the second connecting piece 28 can pull the second fixed frame 22 back to be close to the main shaft 1. During the change from the folded state to the flat state of the folding mechanism 100, the second support plate 24, the fourth support plate 26, and the second connecting piece 28 can push the second fixed frame 22 out to be away from the main shaft 1.

[0344] It can be understood that the folding mechanism 100 of the embodiment realizes the connection between the first fixed frame 21 and the main shaft 1 and the connection between the second fixed frame 22 and the main shaft 1 through the slider-linkage structure and the linkage structure, has a small number of component parts, simple cooperation relationship and cooperation position, and easy-to-produce and assemble component parts, and is conducive to realizing mass production.

[0345] In other embodiments, in FIG. 40, the first support plate 23 slidingly connecting the first fixed frame 21 can also be replaced by the first support plate 23 rotatably connecting the first fixed frame 21. Similarly, the second support plate 24 slidingly connecting the second fixed frame 22 can also be replaced by the second support plate 24 rotatably connecting the second fixed frame 22.

[0346] FIG. 41 is a schematic diagram of another embodiment of the connection relationship between the partial structure of the first connecting assembly 2 and the main shaft 1.

[0347] In the second embodiment, as shown in FIG. 41, the folding mechanism 100 further comprises a third rotational pair 29c. The structure of the third rotational pair 29c can refer to the structure of the first rotational pair 29a. Details are not repeated here.

[0348] As shown in FIG. 41, the first support plate 23 rotatably connects the main shaft 1. The third support plate 25 rotatably connects the first fixed frame 21. The rotating end 271 of the first connecting piece 27 rotatably connects the main shaft 1, and the sliding end 273 of the first connecting piece 27 slidingly connects the first fixed frame 21. The connecting section 272 of the first connecting piece 27 rotatably connects the first support plate 23 through the first rotational pair 29a. The connecting section 272 of the first connecting piece 27 also rotatably connects the third support plate 25 through the third rotational pair 29c. It can be understood that the manner in which the first support plate 23 of the present embodiment rotatably connects the main shaft 1, the manner in which the third support plate 25 rotatably connects the first fixed frame 21, the manner in which the rotating end 271 of the first connecting piece 27 rotatably connects the main shaft 1, the manner in which the sliding end 273 of the first connecting piece 27 slidingly connects the first fixed frame 21, and the manner in which the first support plate 23 rotatably connects the first connecting piece 27 through the first rotational pair 29a can all refer to the related content and related drawings (FIGS. 8-37) described above. Details are not repeated here. In addition, the manner in which the third support plate 25 rotatably connects the first connecting piece 27 through the third rotational pair 29c can also refer to the manner in which the first support plate 23 rotatably connects the first connecting piece 27 through the first rotational pair 29a described above (see FIGS. 28-32). Details are not repeated here. In addition, unlike the foregoing, the third support plate 25 of the present embodiment no longer rotatably connects the first support plate 23, but the third support plate 25 connects the first connecting piece 27 through the third rotational pair 29c. In addition, the manner in which the third support plate 25 of the present embodiment connects the first connecting piece 27 through the third rotational pair 29c can refer to the manner in which the first support plate 23 rotatably connects the first connecting piece 27 through the first rotational pair 29a shown in FIG. 8. Details are not repeated here.

[0349] The rotation axis of the first support plate 23 rotatingly connecting the main shaft 1 is defined as a first rotation axis P1. The rotation axis of the first connecting piece 27 rotatingly connecting the main shaft 1 is a second rotation axis P2. The rotation axis of the first support plate 23 rotatingly connecting the first rotation pair 29a is a third rotation axis P3. The rotation axis of the third support plate 25 rotatingly connecting the third rotation pair 29c is a fourth rotation axis P4. The rotation axis of the first connecting piece 27 rotatingly connecting the first rotation pair 29a is a fifth rotation axis P5. The rotation axis of the first connecting piece 27 rotatingly connecting the third rotation pair 29c is a sixth rotation axis P6. The rotation axis of the third support plate 25 rotatingly connecting the first fixed frame 21 is a seventh rotation axis P7. Exemplarily, the fifth rotation axis P5 and the sixth rotation axis P6 can be on the same straight line, i.e., the fifth rotation axis P5 and the sixth rotation axis P6 are coaxially arranged. It can be understood that the present embodiment can save parts, thereby reducing the number of parts and simplifying the structure. In other embodiments, FIG. 42 is a schematic diagram I of another embodiment of the connection relationship between the partial structure of the first connecting assembly 2 and the main shaft 1. As shown in FIG. 42, the fifth rotation axis P5 and the sixth rotation axis P6 can also not be on the same straight line.

[0350] In the present embodiment, the folding mechanism 100 can be a crank slider linkage mechanism. The main motion of the folding mechanism 100 can be composed of a primary motion and a secondary motion. The primary motion can be the motion mode of a first four-bar linkage mechanism composed of the main shaft 1, the first support plate 23, the first connecting piece 27 and the first rotation pair 29a. In addition, the secondary motion can be the motion mode of a second four-bar linkage mechanism composed of the third support plate 25, the first fixed frame 21, the third rotation pair 29c and the first connecting piece 27. The folding mechanism 100 can pass through the primary motion and the secondary motion, so that in the unfolding or folding process of the folding mechanism 100, the degree of freedom of the first fixed frame 21 relative to the main shaft 1 can be 1, so that the motion trajectory of the first fixed frame 21 relative to the main shaft 1 can be determined. Specifically, in the unfolding or folding process of the folding mechanism 100, the motion mode of the first support plate 23, the third support plate 25, the first connecting piece 27, the first rotation pair 29a and the third rotation pair 29c can constrain the motion trajectory of the first fixed frame 21, so that the motion trajectory of the first fixed frame 21 relative to the main shaft 1 can be determined. In this way, in the process of changing from the unfolded state to the folded state of the folding mechanism 100, the first support plate 23, the third support plate 25, the first connecting piece 27, the first rotation pair 29a and the third rotation pair 29c can pull the first fixed frame 21 back to be close to the main shaft 1. In the process of changing from the folded state to the unfolded state of the folding mechanism 100, the first support plate 23, the third support plate 25, the first connecting piece 27, the first rotation pair 29a and the third rotation pair 29c can push the first fixed frame 21 away from the main shaft 1.

[0351] Fig. 43 is a schematic diagram of still another embodiment of the connection relationship between the partial structure of the first connection assembly 2 and the main shaft 1.

[0352] As shown in Fig. 43, the folding mechanism 100 further comprises a fourth turning pair 29d. The structure of the fourth turning pair 29d can be referred to the structure of the first turning pair 29a. Details are not repeated here.

[0353] As shown in Fig. 43, the second support plate 24 is rotationally connected to the main shaft 1. The fourth support plate 26 is rotationally connected to the second fixed frame 22. The rotation end 281 of the second connecting piece 28 is rotationally connected to the main shaft 1. The sliding end 283 of the second connecting piece 28 is slidingly connected to the second fixed frame 22. The connecting segment 282 of the second connecting piece 28 is connected to the second support plate 24 through the second turning pair 29b, and the connecting segment 282 of the second connecting piece 28 is further connected to the fourth support plate 26 through the fourth turning pair 29d.

[0354] It can be understood that the manner in which the second support plate 24 of the present embodiment is rotationally connected to the main shaft 1, the manner in which the fourth support plate 26 is rotationally connected to the second fixed frame 22, the manner in which the rotation end 281 of the second connecting piece 28 is rotationally connected to the main shaft 1, the manner in which the sliding end 283 of the second connecting piece 28 is slidingly connected to the second fixed frame 22, and the manner in which the connecting segment 282 of the second connecting piece 28 is connected to the second support plate 24 through the second turning pair 29b can be referred to the related contents and related drawings (Figs. 8 to 37) in the foregoing. Details are not repeated here. In addition, the manner in which the connecting segment 282 of the second connecting piece 28 is further connected to the fourth support plate 26 through the fourth turning pair 29d can also be referred to the manner in which the first support plate 23 is rotationally connected to the first connecting piece 27 through the first turning pair 29a in the foregoing (see Figs. 28 to 32). Details are not repeated here. In addition, unlike the foregoing, the fourth support plate 26 of the present embodiment is no longer rotationally connected to the second support plate 24, but the fourth support plate 26 is connected to the connecting segment 282 of the second connecting piece 28 through the fourth turning pair 29d.

[0355] The rotation axis of the second support plate 24 rotatingly connecting the main shaft 1 is defined as an eighth rotation axis P8. The rotation axis of the second connecting piece 28 rotatingly connecting the main shaft 1 is defined as a ninth rotation axis P9. The rotation axis of the second support plate 24 rotatingly connecting the second rotating pair 29b is defined as a tenth rotation axis P10. The rotation axis of the fourth support plate 26 rotatingly connecting the fourth rotating pair 29d is defined as an eleventh rotation axis P11. The rotation axis of the second connecting piece 28 rotatingly connecting the second rotating pair 29b is defined as a twelfth rotation axis P12. The rotation axis of the second connecting piece 28 rotatingly connecting the fourth rotating pair 29d is defined as a thirteenth rotation axis P13. The rotation axis of the fourth support plate 26 rotatingly connecting the second fixed frame 22 is defined as a fourteenth rotation axis P14. Exemplarily, the twelfth rotation axis P12 and the thirteenth rotation axis P13 can be on the same straight line, that is, the twelfth rotation axis P12 and the thirteenth rotation axis P13 are coaxially arranged. In other embodiments, the twelfth rotation axis P12 and the thirteenth rotation axis P13 can not be on the same straight line.

[0356] It can be understood that, in combination with FIGS. 31 and 32, in the process of unfolding or folding the folding mechanism 100, the movement mode of the second support plate 24, the fourth support plate 26, the second connecting piece 28, the second rotating pair 29b and the fourth rotating pair 29d can constrain the movement trajectory of the second fixed frame 22, so that the movement trajectory of the second fixed frame 22 relative to the main shaft 1 can be determined. In this way, in the process of changing from the unfolded state to the folded state of the folding mechanism 100, the second support plate 24, the fourth support plate 26, the second connecting piece 28, the second rotating pair 29b and the fourth rotating pair 29d can pull the second fixed frame 22 back to be close to the main shaft 1. In the process of changing from the folded state to the unfolded state of the folding mechanism 100, the second support plate 24, the fourth support plate 26, the second connecting piece 28, the second rotating pair and the fourth rotating pair 29d can push the second fixed frame 22 away from the main shaft 1.

[0357] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict, and any combination of the features in different embodiments is also within the protection scope of the present application, that is, the above-described multiple embodiments can also be combined as needed.

[0358] It should be noted that all the above-mentioned drawings are exemplary drawings of the present application, and do not represent the actual size of the product. The size ratio relationship between the components in the drawings is not limited to the actual product of the present application. The above are only some embodiments and implementation manners of the present application, and the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of changes or replacements within the technical scope disclosed in the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

A folding mechanism (100) characterized in that, The folding mechanism (100) comprises a main shaft (1), a first fixed frame (21), a second fixed frame (22), a first support plate (23), a second support plate (24), a third support plate (25), a fourth support plate (26), a first connecting piece (27), a second connecting piece (28), a first rotary pair (29a) and a second rotary pair (29b), and the main shaft (1) is located between the first fixed frame (21) and the second fixed frame (22); The first support plate (23) is rotationally connected with the main shaft (1), and the third support plate (25) is rotationally connected with the first support plate (23) and the first fixed frame (21); The first connecting piece (27) comprises a rotating end (271), a connecting section (272) and a sliding end (273) connected in sequence, the rotating end (271) of the first connecting piece (27) is rotationally connected with the main shaft (1), the sliding end (273) of the first connecting piece (27) is slidingly connected with the first fixed frame (21), and the connecting section (272) of the first connecting piece (27) is connected with the first support plate (23) through the first rotary pair (29a); The second support plate (24) is rotationally connected with the main shaft (1), and the fourth support plate (26) is rotationally connected with the second support plate (24) and the second fixed frame (22); The second connecting piece (28) comprises a rotating end (281), a connecting section (282) and a sliding end (283) connected in sequence, the rotating end (281) of the second connecting piece (28) is rotationally connected with the main shaft (1), the sliding end (283) of the second connecting piece (28) is slidingly connected with the second fixed frame (22), and the connecting section (282) of the second connecting piece (28) is connected with the second support plate (24) through the second rotary pair (29b). The folding mechanism (100) according to claim 1, characterized in that When the folding mechanism (100) is in the unfolded state, the third support plate (25), the first support plate (23), the second support plate (24) and the fourth support plate (26) are sequentially spliced and jointly form a support surface (100a); When the folding mechanism (100) is in the folded state, the first support plate (23) and the second support plate (24) are arranged opposite to each other, the third support plate (25) and the fourth support plate (26) are arranged opposite to each other, and the main shaft (1), the first support plate (23), the second support plate (24), the third support plate (25) and the fourth support plate (26) enclose an accommodating space (100b). The folding mechanism (100) according to claim 2, characterized in that When the folding mechanism (100) is in the folded state, the first support plate (23) and the second support plate (24) are both arranged obliquely relative to the main shaft (1), and the first support plate (23) and the second support plate (24) are close to each other in the direction close to the main shaft (1), and the third support plate (25) and the fourth support plate (26) are also arranged obliquely relative to the main shaft (1), and the third support plate (25) and the fourth support plate (26) are close to each other in the direction away from the main shaft (1). The folding mechanism (100) according to any one of claims 1 to 3, characterized in that When the folding mechanism (100) is in the unfolded state, the first support plate (23) and the second support plate (24) together cover the entire main shaft (1); When the folding mechanism (100) is in the folded state, the first support plate (23) and the second support plate (24) cover two sides of the main shaft (1) respectively. The folding mechanism (100) according to any one of claims 1 to 4, characterized in that The rotation axis of the first rotation pair (29a) to which the first support plate (23) is rotationally connected and the rotation axis of the first support plate (23) to which the third support plate (25) is rotationally connected are in the same straight line. The folding mechanism (100) according to any one of claims 1 to 5, characterized in that The main shaft (1) is curved to form an inner space (10), and the main shaft (1) is further provided with a first arc-shaped groove (11), and the first arc-shaped groove (11) of the main shaft (1) communicates with the inner space (10); The first support plate (23) comprises a first support plate body (231) and an arc-shaped block (232); The arc-shaped block (232) of the first support plate (23) is arranged in the first arc-shaped groove (11) of the main shaft (1) and can rotate in the first arc-shaped groove (11) of the main shaft (1); At least part of the first support plate body (231) is arranged in the inner space (10) and can rotate in the inner space (10). The folding mechanism (100) according to claim 6, characterized in that The first support plate body (231) comprises a bottom surface (2312) and a first end surface (2313), the first end surface (2313) of the first support plate body (231) is connected to the bottom surface (2312) of the first support plate body (231), and the bottom surface (2312) of the first support plate body (231) faces the main shaft (1) when the folding mechanism (100) is in the unfolded state; The first support plate body (231) is provided with a avoiding space (234), the avoiding space (234) forms an opening in the bottom surface (2312) of the first support plate body (231), and the avoiding space (234) comprises a first wall surface (2341), and the first wall surface (2341) of the avoiding space (234) is arranged away from the first end surface (2313) of the first support plate body (231); The number of the arc-shaped blocks (232) of the first support plate (23) is at least two, one arc-shaped block (232) of the first support plate (23) is protrudingly arranged on the first end surface (2313) of the first support plate body (231), and one arc-shaped block (232) of the first support plate (23) is protrudingly arranged on the first wall surface (2341) of the avoiding space (234). The folding mechanism (100) according to claim 6 or 7, characterized in that The first support plate (23) is provided with a first rotating space (235), the first rotating space (235) of the first support plate (23) is located on the side, away from the main shaft (1), of the arc-shaped block (232) of the first support plate (23), and the first rotating space (235) of the first support plate (23) comprises oppositely arranged first and second side walls (2351 and 2352), and the first and second side walls (2351 and 2352) of the first rotating space (235) of the first support plate (23) are both provided with an axis hole (2353); The third support plate (25) comprises an axis block (252), and the axis block (252) of the third support plate (25) is provided with an axis hole (254); The folding mechanism (100) further comprises a first axis (20a), the first axis (20a) sequentially passes through the axis hole (2353) of the first side wall (2351) of the first rotating space (235) of the first support plate (23), the axis hole (254) of the axis block (252) of the third support plate (25) and the axis hole (2353) of the second side wall (2352) of the first rotating space (235) of the first support plate (23). The folding mechanism (100) according to any one of claims 1 to 8, characterized in that The first rotating pair (29a) comprises a support (291a), a first pin shaft (292a) and a second pin shaft (293a), the support (291a) is provided with a first pin shaft hole (2911a) and a second pin shaft hole (2912a) arranged at intervals; The connecting section (272) of the first connecting piece (27) is provided with a rotating space (274), the rotating space (274) of the first connecting piece (27) comprises oppositely arranged first and second side walls (2741 and 2742), and the first and second side walls (2741 and 2742) of the rotating space (274) of the first connecting piece (27) are both provided with an axis hole (2743); Part of the support (291a) is located in the rotating space (274) of the connecting section (272) of the first connecting piece (27), and the first pin shaft (292a) sequentially passes through the axis hole (2743) of the first side wall (2741) of the rotating space (274) of the first connecting piece (27), the first pin shaft hole (2911a) of the support (291a) and the axis hole (2743) of the second side wall (2742) of the rotating space (274) of the first connecting piece (27); The first support plate (23) is further provided with a second rotating space (236), the second rotating space (236) of the first support plate (23) comprises oppositely arranged first and second side walls (2361 and 2362), and the first and second side walls (2361 and 2362) of the second rotating space (236) of the first support plate (23) are both provided with an axis hole (2363); Part of the support (291a) is located in the second rotation space (236) of the first support plate (23), and the second pin shaft (293a) passes through the rotation shaft hole (2363) of the first side wall (2361) of the second rotation space (236) of the first support plate (23), the second pin shaft hole (2912a) of the support (291a) and the rotation shaft hole (2363) of the second side wall (2362) of the second rotation space (236) of the first support plate (23) in sequence. The folding mechanism (100) according to claim 9, characterized in that The connecting section (272) of the first connecting piece (27) comprises a first part (2721) and a second part (2722), the first part (2721) connects the rotation end (271) of the first connecting piece (27) and the sliding end (273) of the first connecting piece (27), and the second part (2722) protrudes relative to one side of the rotation end (271) of the first connecting piece (27); The rotation space (274) of the first connecting piece (27) is arranged on the second part (2722). The folding mechanism (100) according to any one of claims 1 to 10, characterized in that The first fixed frame (21) is provided with an arc-shaped groove (212), and the third support plate (25) comprises an arc-shaped block (253). The arc-shaped block (253) of the third support plate (25) is arranged in the arc-shaped groove (212) of the first fixed frame (21) and can rotate in the arc-shaped groove (212) of the first fixed frame (21). The folding mechanism (100) according to any one of claims 1 to 11, characterized in that The first support plate (23) is further connected to the first fixed frame (21) in a sliding mode, and / or the second support plate (24) is further connected to the second fixed frame (22) in a sliding mode. The folding mechanism (100) according to claim 12, characterized in that The first fixed frame (21) is provided with a second sliding groove (215), and the first support plate (23) comprises a sliding block (233). The sliding block (233) of the first support plate (23) is arranged in the second sliding groove (215) of the first fixed frame (21) and can slide in the second sliding groove (215) of the first fixed frame (21). The folding mechanism (100) according to claim 13, characterized in that The first fixed frame (21) comprises a first side surface (211c) facing the main shaft (1), and the second sliding groove (215) of the first fixed frame (21) is arranged obliquely relative to the first side surface (211c) of the first fixed frame (21). The folding mechanism (100) according to any one of claims 1 to 11, characterized in that The first support plate (23) is further connected to the first fixed frame (21) in a rotating mode, and / or the second support plate (24) is further connected to the second fixed frame (22) in a rotating mode. A folding mechanism (100) characterized in that, The main shaft (1), the first fixed frame (21), the second fixed frame (22), the first support plate (23), the second support plate (24), the third support plate (25), the fourth support plate (26), the first connecting piece (27) and the second connecting piece (28) are arranged in sequence. The first support plate (23) is connected to the main shaft (1) in a rotating mode and is connected to the first fixed frame (21) in a sliding mode or a rotating mode, and the third support plate (25) is connected to the first support plate (23) and the first fixed frame (21) in a rotating mode. The first connecting piece (27) comprises a rotating end (271) and a sliding end (273), the rotating end (271) of the first connecting piece (27) is rotationally connected with the main shaft (1), and the sliding end (273) of the first connecting piece (27) is slidingly connected with the first fixing frame (21); The second support plate (24) is rotationally connected with the main shaft (1) and slidingly or rotationally connected with the second fixing frame (22), and the fourth support plate (26) is rotationally connected with the second support plate (24) and the second fixing frame (22); The second connecting piece (28) comprises a rotating end (281) and a sliding end (283), the rotating end (281) of the second connecting piece (28) is rotationally connected with the main shaft (1), and the sliding end (283) of the second connecting piece (28) is slidingly connected with the second fixing frame (22). The folding mechanism (100) according to claim 16, characterized in that When the folding mechanism (100) is in the unfolded state, the third support plate (25), the first support plate (23), the second support plate (24) and the fourth support plate (26) are sequentially spliced and jointly form a support surface (100a); When the folding mechanism (100) is in the folded state, the first support plate (23) and the second support plate (24) are oppositely arranged, the third support plate (25) and the fourth support plate (26) are oppositely arranged, and the main shaft (1), the first support plate (23), the second support plate (24), the third support plate (25) and the fourth support plate (26) enclose an accommodating space (100b). The folding mechanism (100) according to claim 17, characterized in that When the folding mechanism (100) is in the folded state, the first support plate (23) and the second support plate (24) are both arranged to be inclined relative to the main shaft (1), and the first support plate (23) and the second support plate (24) are close to each other in a direction close to the main shaft (1), and the third support plate (25) and the fourth support plate (26) are also arranged to be inclined relative to the main shaft (1), and the third support plate (25) and the fourth support plate (26) are close to each other in a direction away from the main shaft (1). The folding mechanism (100) according to any one of claims 16 to 18, characterized in that The first support plate (23) comprises a sliding block (233), and the first fixing frame (21) is provided with a second sliding groove (215); The sliding block (233) of the first support plate (23) is arranged in the second sliding groove (215) of the first fixing frame (21) and can slide in the second sliding groove (215) of the first fixing frame (21). The folding mechanism (100) according to claim 19, characterized in that The first fixing frame (21) comprises a first side surface (211c) facing the main shaft (1), and the second sliding groove (215) of the first fixing frame (21) is arranged to be inclined relative to the first side surface (211c) of the first fixing frame (21). A folding mechanism (100) characterized in that, The folding mechanism (100) comprises a main shaft (1), a first fixed frame (21), a second fixed frame (22), a first support plate (23), a second support plate (24), a third support plate (25), a fourth support plate (26), a first connecting piece (27), a second connecting piece (28), a first rotary pair (29a), a second rotary pair (29b), a third rotary pair (29c), and a fourth rotary pair (29d), wherein the main shaft (1) is located between the first fixed frame (21) and the second fixed frame (22); The first support plate (23) is rotationally connected to the main shaft (1), and the third support plate (25) is rotationally connected to the first fixed frame (21); The first connecting piece (27) comprises a rotating end (271), a connecting section (272), and a sliding end (273) connected in sequence, the rotating end (271) of the first connecting piece (27) is rotationally connected to the main shaft (1), the sliding end (273) of the first connecting piece (27) is slidingly connected to the first fixed frame (21), the connecting section (272) of the first connecting piece (27) is connected to the first support plate (23) through the first rotary pair (29a), and the connecting section (272) of the first connecting piece (27) is also connected to the third support plate (25) through the third rotary pair (29c); The second support plate (24) is rotationally connected to the main shaft (1), and the fourth support plate (26) is rotationally connected to the second fixed frame (22); The second connecting piece (28) comprises a rotating end (281), a connecting section (282), and a sliding end (283) connected in sequence, the rotating end (281) of the second connecting piece (28) is rotationally connected to the main shaft (1), the sliding end (283) of the second connecting piece (28) is slidingly connected to the second fixed frame (22), the connecting section (282) of the second connecting piece (28) is connected to the second support plate (24) through the second rotary pair (29b), and the connecting section (282) of the second connecting piece (28) is also connected to the fourth support plate (26) through the fourth rotary pair (29d). The folding mechanism (100) according to claim 21, characterized in that When the folding mechanism (100) is in the unfolded state, the third support plate (25), the first support plate (23), the second support plate (24), and the fourth support plate (26) are sequentially spliced and jointly form a support surface (100a); When the folding mechanism (100) is in the folded state, the first support plate (23) and the second support plate (24) are arranged oppositely, the third support plate (25) and the fourth support plate (26) are arranged oppositely, and the main shaft (1), the first support plate (23), the second support plate (24), the third support plate (25), and the fourth support plate (26) enclose an accommodation space (100b). The folding mechanism (100) according to claim 22, characterized in that When the folding mechanism (100) is in the folded state, the first support plate (23) and the second support plate (24) are both arranged obliquely relative to the main shaft (1), and the first support plate (23) and the second support plate (24) are close to each other in the direction close to the main shaft (1), and the third support plate (25) and the fourth support plate (26) are also arranged obliquely relative to the main shaft (1), and the third support plate (25) and the fourth support plate (26) are close to each other in the direction away from the main shaft (1). An electronic device (1000) comprising: The folding mechanism (100) comprises a first housing (300), a second housing (400), a flexible screen (200), and a first fixed frame (21) and a second fixed frame (22), wherein the first fixed frame (21) is fixedly connected with the first housing (300), and the second fixed frame (22) is fixedly connected with the second housing (400). The flexible screen (200) comprises a first display area (201), a second display area (202), and a third display area (203) connected in sequence, the first display area (201) is fixed on the first housing (300), and the third display area (203) is fixed on the second housing (400). The electronic device (1000) according to claim 24, characterized in that, When the electronic device (1000) is in the unfolded state, the first support plate (23), the second support plate (24), the third support plate (25), and the fourth support plate (26) jointly form a support surface (100a), and the support surface (100a) supports the second display area (202). When the folding mechanism (100) is in the folded state, the main shaft (1), the first support plate (23), the second support plate (24), the third support plate (25), and the fourth support plate (26) enclose an accommodation space (100b), and the accommodation space (100b) accommodates the second display area (202).

Images