Rotating shaft mechanism and foldable electronic equipment

Abstract

The invention provides a rotating shaft mechanism and foldable electronic equipment, and relates to the technical field of electronic products. The foldable electronic equipment comprises a rotating shaft mechanism. The rotating shaft mechanism has an unfolded state and a folded state and comprises a base and a first outer part. One side surface of the base in the first direction is provided with a middle appearance surface, and one end of the base in the second direction is provided with a first rotation matching part; the first appearance piece is located on one side, in the second direction, of the base, the first appearance piece is provided with a first matching part, and the first matching part is rotationally connected with the first rotating matching part; the first appearance piece is provided with a first appearance face, the first appearance face and the middle appearance face are both parts of the appearance face of the foldable electronic equipment, and in the unfolded state, the first appearance face and the middle appearance face face the same direction. The gap between the gaps among the multiple appearance parts and the design value can be reduced, and the gaps among the multiple appearance parts can be conveniently controlled at least to a certain extent.

Description

[0001] This application is a divisional application. The application number of the original application is 202311523653.3, and the original application date is November

[0002] 14, 2023. The entire content of the original application is incorporated herein by reference. Technical Field

[0003] This application relates to the technical field of electronic products, and particularly relates to a rotating shaft mechanism and a foldable electronic device. Background Art

[0004] Currently, in order to solve problems such as the large size and inconvenient portability of traditional flat electronic devices, foldable electronic devices have emerged. Generally, in order to achieve the folding and unfolding of foldable electronic devices, foldable electronic devices include a rotating shaft mechanism. The rotating shaft mechanism generally includes multiple appearance parts that can move relative to each other. The appearance surfaces of the appearance parts form part of the appearance surface of the foldable electronic device. The size of the gap between adjacent appearance parts is a key factor affecting the overall delicacy of the foldable electronic device. When the gap between appearance parts is large, the internal structural parts of the rotating shaft mechanism are easily exposed; when the gap between appearance parts is small, there is a problem of rubbing between adjacent appearance parts during the process of switching between the unfolded state and the folded state of the rotating shaft mechanism. Therefore, the control of the gap between adjacent appearance parts is crucial. However, in the rotating shaft structures in related technologies, there is a large gap between the gaps of multiple appearance parts and the design values, and it is difficult to control the gaps of multiple appearance parts. Summary of the Invention

[0005] This application provides a rotating shaft mechanism and a foldable electronic device, which is beneficial to reducing the gap between multiple appearance parts and the design value, and can facilitate the control of the gap between multiple appearance parts to at least a certain extent.

[0006] To achieve the above object, this application adopts the following technical solutions:

[0007] In a first aspect, a foldable electronic device is provided. The foldable electronic device includes a rotating shaft mechanism. The rotating shaft mechanism has an unfolded state and a folded state, and includes a base and a first appearance member. One side surface of the base in a first direction has an intermediate appearance surface. One end of the base in a second direction is provided with a first rotation fitting portion, where the second direction is perpendicular to the first direction. The first appearance member is located on one side of the base in the second direction. The first appearance member is provided with a first fitting portion, and the first fitting portion is rotatably connected to the first rotation fitting portion. The rotation center line of the first fitting portion and the first rotation fitting portion is the first rotation center line, and the first rotation center line is perpendicular to the first direction and the second direction. The first appearance member has a first appearance surface, and both the first appearance surface and the intermediate appearance surface are part of the appearance surface of the foldable electronic device. In the unfolded state, the first appearance surface and the intermediate appearance surface face the same direction.

[0008] According to the foldable electronic device of the present application, by providing a first fitting portion on the first appearance member and a first rotation fitting portion on the base, the first fitting portion is rotatably connected to the first rotation fitting portion, thereby realizing a direct hinge relationship between the first appearance member and the base. In this way, on the one hand, the installation chain between the first appearance member and the base with the intermediate appearance surface is shortened. By only ensuring the fitting accuracy of the first fitting portion and the first rotation fitting portion, the effective control of the gap between the first appearance surface and the intermediate appearance surface can be achieved, which is beneficial to ensuring that the gap between the first appearance surface and the intermediate appearance surface reaches the set value. On the other hand, it avoids the problems of low assembly efficiency of the rotating shaft mechanism and increased production cost caused by repeated disassembly and assembly of the rotating shaft mechanism on the production line, which is beneficial to improving the assembly efficiency and reducing the production cost. In addition, it is also beneficial to realize the uniformity of the spacing dimensions at the same gap in different rotating shaft mechanisms.

[0009] In a possible implementation manner of the first aspect of the present application, the first rotation fitting portion is a first arc groove, and the first fitting portion is a first arc rib. The first arc rib is received and fitted in the first arc groove. In this way, the first rotation center line of the relative rotation between the first appearance member and the base is an imaginary axis, that is, the first rotation center line is located outside the first rotation fitting portion and the first fitting portion, which is beneficial to reducing the volume of the rotating shaft mechanism on the basis of increasing the relative rotation angle between the first appearance member and the base.

[0010] In some embodiments, there are multiple first arc-shaped ribs. The multiple first arc-shaped ribs are spaced apart in the extending direction of the first rotation center line. There are also multiple first arc-shaped grooves. The multiple first arc-shaped grooves are spaced apart in the extending direction of the first rotation center line. One first arc-shaped groove corresponds to and cooperates with one first arc-shaped rib. In this way, it is beneficial to improve the reliability of the connection between the first appearance member and the base, thereby further improving the assembly stability between the first appearance member and the base, and further improving the effective control of the gap between the first appearance surface and the intermediate appearance surface.

[0011] In a possible implementation manner of the first aspect of the present application, the first arc-shaped groove arches away from the intermediate appearance surface. In this way, the center line of the first arc-shaped groove can be on the side of the first arc-shaped groove close to the intermediate appearance surface, so that when the foldable electronic device switches from the unfolded state to the folded state, it is convenient for the first appearance member to rotate towards the side where the intermediate appearance surface faces, so as to achieve the outward folding of the foldable electronic device.

[0012] In a possible implementation manner of the first aspect of the present application, the first appearance member has a first inner surface, and the first inner surface faces away from the first appearance surface; the first arc-shaped rib is fixed to one end of the first inner surface close to the base. In this way, it is beneficial to shorten the extending path of the first arc-shaped rib, and further improve the structural compactness of the rotating shaft mechanism.

[0013] In a possible implementation manner of the first aspect of the present application, the base includes: a base main body and an intermediate appearance member. The intermediate appearance member and the base main body are separately processed parts and are relatively fixed. The intermediate appearance member has an intermediate appearance surface and an intermediate inner surface. The intermediate inner surface faces away from the intermediate appearance surface and faces the base main body. The first arc groove includes a first arc wall and a second arc wall facing each other. The center lines of the first arc wall and the second arc wall are both the first rotation center line. The first arc wall is located on the side of the second arc wall close to the intermediate appearance surface, and at least a part of the first arc wall is located on the intermediate appearance member. Since the intermediate appearance member has an intermediate appearance surface, the requirements for the appearance of the intermediate appearance member are relatively high. By forming the intermediate appearance member and the base main body into a separately formed part, it is beneficial to process the intermediate appearance member using a process with relatively high processing accuracy, and it is beneficial to process the base main body using a process with relatively low processing accuracy, thereby facilitating the simplification of the processing and manufacturing process of the base. Moreover, by arranging at least a part of the first arc wall on the intermediate appearance member, the direct connection between the first appearance member and the intermediate appearance member can be realized, the installation chain between the first appearance member and the intermediate appearance member can be shortened, the effective control of the gap between the first appearance surface and the intermediate appearance surface can be achieved, it is beneficial to ensure that the gap between the first appearance surface and the intermediate appearance surface reaches the set value, and the problems of low assembly efficiency of the rotation shaft mechanism and increased production cost caused by the need to repeatedly disassemble and assemble the rotation shaft mechanism on the production line are avoided, which is beneficial to improving the assembly efficiency and reducing the production cost.

[0014] In a possible implementation manner of the first aspect of the present application, the first arc wall is formed on the intermediate inner surface, and the second arc wall is formed on the surface of the base main body facing the intermediate appearance member. In this way, by arranging the first arc wall on the intermediate inner surface and the second arc wall on the base main body, on the one hand, it is beneficial to simplify the processing and manufacturing of the first arc groove, and on the other hand, it is beneficial to realize the direct connection between the first appearance member and the intermediate appearance member, thereby shortening the installation chain between the first appearance member and the intermediate appearance member, achieving the effective control of the gap between the first appearance surface and the intermediate appearance surface, being beneficial to ensuring that the gap between the first appearance surface and the intermediate appearance surface reaches the set value, and avoiding the problems of low assembly efficiency of the rotation shaft mechanism and increased production cost caused by the need to repeatedly disassemble and assemble the rotation shaft mechanism on the production line, which is beneficial to improving the assembly efficiency and reducing the production cost.

[0015] In a possible implementation of the first aspect of the present application, a bump protruding towards the base body is formed on the middle inner surface, and a first arc-shaped wall is formed on the surface of the bump. A recessed groove for avoiding the bump is provided on the base body, and the groove wall of the recessed groove facing the middle inner surface is a second arc-shaped wall. In this way, the recessed groove and the above-mentioned bump can enclose a first circular arc groove, which has a simple structure and is convenient for processing and manufacturing. Moreover, the setting of the bump is also beneficial to improving the structural strength of the middle appearance part. In some other embodiments, the bump can also be provided on the base body, and the second arc-shaped wall is formed on the surface of the bump; at the same time, a recessed groove is opened on the middle inner surface, and the groove wall of the recessed groove facing the base body is a first arc-shaped wall. In this way, the above-mentioned first circular arc groove can be formed by the cooperation of the bump and the recessed groove, which has a simple structure and is convenient for processing and manufacturing.

[0016] In a possible implementation of the first aspect of the present application, a first avoidance groove recessed close to the middle appearance surface is formed on the middle inner surface. In the second direction, the first avoidance groove is located at one end of the bump away from the first appearance part, and the first arc-shaped wall is connected to the groove wall of the first avoidance groove close to the bump. In this way, by providing the first avoidance groove, when the foldable electronic device is unfolded to the unfolded state, the first avoidance groove can be used to avoid the first circular arc rib, thereby improving the reliability of the cooperation between the first appearance part and the base, and preventing the occurrence of jamming.

[0017] In a possible implementation of the first aspect of the present application, the first circular arc groove is formed on the middle appearance part. In this way, it is beneficial to realize the direct connection between the first appearance part and the middle appearance part, thereby shortening the installation chain between the first appearance part and the middle appearance part, effectively controlling the gap between the first appearance surface and the middle appearance surface, being beneficial to ensuring that the gap between the first appearance surface and the middle appearance surface reaches the set value, and avoiding the problems of low assembly efficiency of the rotating shaft mechanism and increased production cost caused by repeated disassembly and assembly of the rotating shaft mechanism on the production line, being beneficial to improving the assembly efficiency and reducing the production cost.

[0018] In a possible implementation of the first aspect of the present application, the first appearance member has a first inner surface, and the first inner surface is disposed opposite to the first appearance surface; one end of the base provided with the first rotation mating portion is further provided with a first rotation portion, and the first rotation portion and the first rotation mating portion are spaced apart in the extending direction of the first rotation center line; the rotation shaft mechanism includes a first swing arm, the first swing arm and the first appearance member are separately processed parts and fixedly connected, the first swing arm is located on the side facing the first inner surface, and the first swing arm is provided with a first pivot portion, and the first pivot portion is rotatably connected to the first rotation portion around the first rotation center line. In this way, the first swing arm realizes a rotatable connection with the base by means of the rotational cooperation between the first pivot portion and the first rotation portion. And the rotation center lines between the first swing arm and the base and between the first appearance member and the base are both the first rotation center line, so that synchronous rotation of the two can be realized, preventing the first appearance member from interfering with the rotation of the first swing arm relative to the base, and also preventing the first swing arm from interfering with the rotation of the first appearance member relative to the base 231. At the same time, the simultaneous arrangement of the first swing arm and the first appearance member is beneficial to improving the reliability of the connection between the first swing arm and the first appearance member as a whole and the base.

[0019] In a possible implementation of the first aspect of the present application, the first rotation portion is a first arc-shaped groove, and the first pivot portion is a first arc-shaped rib, and the first arc-shaped rib is received and fitted in the first arc-shaped groove. In this way, the first rotation center line of the relative rotation between the first swing arm and the base is an imaginary axis, which is beneficial to reducing the volume of the rotation shaft mechanism on the basis of increasing the rotation angle of the relative rotation between the first swing arm and the base.

[0020] In a possible implementation of the present application, the first arc-shaped rib is fixed to one end adjacent to the base on the surface of the first swing arm facing the first door panel. In this way, it is beneficial to shorten the extension path of the first arc-shaped rib and further improve the structural compactness of the rotation shaft mechanism. In other examples, the first arc-shaped rib can also be fixed to the end face of the first swing arm adjacent to the base.

[0021] In a possible implementation of the first aspect of the present application, a plurality of first arc-shaped ribs can be provided on the first swing arm. The plurality of first arc-shaped ribs are spaced apart in the extending direction of the first rotation center line, and the first arc-shaped grooves on the base are also multiple. The plurality of first arc-shaped grooves are spaced apart in the extending direction of the first rotation center line. One first arc-shaped groove corresponds to and cooperates with one first arc-shaped rib. In this way, it is beneficial to improve the reliability of the connection between the first swing arm and the base.

[0022] In a possible implementation of the first aspect of the present application, the first arc-shaped groove arches away from the middle appearance surface. In this way, the center line of the first arc-shaped groove can be on the side of the first arc-shaped groove close to the middle appearance surface, so that when the foldable electronic device switches from the unfolded state to the folded state, it is convenient for the first swing arm to rotate towards the side where the middle appearance surface faces, so as to realize the outward folding of the foldable electronic device.

[0023] In a possible implementation of the first aspect of the present application, the rotating shaft mechanism includes: a first door panel, and the first door panel is located on the side of the first swing arm away from the first appearance member; wherein, a first sliding groove is provided on the first door panel, and a first sliding rail for slidingly cooperating with the first sliding groove is provided on the first swing arm; alternatively, a first sliding rail is provided on the first door panel, and a first sliding groove for slidingly cooperating with the first sliding rail is provided on the first swing arm. In this way, the relative sliding direction between the first swing arm and the first door panel can be guided and limited through the cooperation of the first sliding rail and the first sliding groove, and the reliability of the sliding cooperation between the first swing arm and the first door panel can be improved.

[0024] In a possible implementation of the first aspect of the present application, the rotating shaft mechanism includes: a first door panel, and the first door panel is located on the side of the first swing arm away from the first appearance member. The surface of the first door panel facing the first appearance member is recessed away from the first appearance member to form a first receiving groove. The first receiving groove extends to one end of the first door panel close to the base. The first swing arm is slidably fitted in the first receiving groove. In this way, it is beneficial to reduce the overall thickness of the first swing arm, the first door panel and the first appearance member, thereby reducing the thickness of the rotating shaft mechanism, and further being beneficial to reducing the thickness of the foldable electronic device.

[0025] In a possible implementation of the first aspect of the present application, first sliding grooves are respectively formed on the two side groove walls of the first receiving groove in the extending direction of the first rotation center line. First sliding rails are respectively provided on the two end faces of the first swing arm in the extending direction of the first rotation center line. One first sliding rail cooperates with one first sliding groove. Thus, the relative sliding direction between the first swing arm and the first door panel can be guided and limited at both ends of the first swing arm, and the reliability of the sliding cooperation between the first swing arm and the first door panel can be further improved.

[0026] In a possible implementation of the first aspect of the present application, the first appearance member has a first inner surface, and the first inner surface is arranged opposite to the first appearance surface; the rotating shaft mechanism includes a first door panel, and the first door panel is located on the side towards the first inner surface, and the first door panel is slidably connected to the first appearance member. Thus, the folding and unfolding of the foldable electronic device are realized.

[0027] In a possible implementation of the first aspect of the present application, a first sliding rail is provided on the first door panel, and a first sliding groove for slidingly cooperating with the first sliding rail is provided on the first inner surface; alternatively, a first sliding groove is provided on the first door panel, and a first sliding rail for slidingly cooperating with the first sliding groove is provided on the first inner surface. In this way, the relative sliding direction between the first appearance part and the first door panel can be guided and limited through the cooperation of the first sliding rail and the first sliding groove, and the reliability of the sliding cooperation between the first appearance part and the first door panel can be improved.

[0028] Exemplarily, there are multiple first sliding grooves. The multiple first sliding grooves are spaced apart in the extending direction of the first rotation center line. There are multiple first sliding rails. The multiple first sliding rails are spaced apart in the extending direction of the first rotation center line. One first sliding groove corresponds to and cooperates with one first sliding rail. Thus, the one-to-one correspondence and cooperation of the multiple first sliding grooves and the multiple first sliding rails can guide and limit the relative sliding direction between the first appearance part and the first door panel at multiple positions in the extending direction of the first rotation center line, and the reliability of the sliding cooperation between the first swing arm and the first door panel can be further improved.

[0029] In a possible implementation of the first aspect of the present application, the first sliding rail is provided on the first door panel. A limiting flange is formed at one end of the first sliding rail away from the first inner surface. A limiting groove adapted to the limiting flange is further provided on the groove side wall of the first sliding groove. In this way, through the cooperation of the limiting flange and the limiting groove, it is beneficial to prevent the first sliding rail from disengaging from the open end on the side adjacent to the first inner surface of the first sliding groove, and the reliability of the cooperation between the first sliding rail and the first sliding groove is improved.

[0030] In a possible implementation of the first aspect of the present application, the rotating shaft mechanism includes: a third door panel located between the first door panel and the base. The third door panel is rotatably connected to the base, and the rotation center line of the relative rotation between the third door panel and the base is parallel to the first rotation center line. The third door panel is rotatably connected to the first door panel, and the rotation center line of the relative rotation between the third door panel and the first door panel is parallel to the first rotation center line.

[0031] In a possible implementation of the first aspect of the present application, the rotating shaft mechanism further includes a first hinge structure. The third door panel is rotatably connected to the first door panel by means of the first hinge structure, and the third door panel is rotatably connected to the base by means of the first hinge structure.

[0032] In a possible implementation of the first aspect of the present application, the first hinge structure includes a third arc-shaped rib and a fourth arc-shaped rib. Both the third arc-shaped rib and the fourth arc-shaped rib are fixed to the third door panel. A third arc-shaped chute is provided on the first door panel. The third arc-shaped rib is received and fitted in the third arc-shaped chute. A fourth arc-shaped chute is provided on the base, and the fourth arc-shaped rib is received and fitted in the fourth arc-shaped chute. In this way, not only is the hinge between the third door panel and the first door panel and between the third door panel and the base realized, but also when the first door panel and the third door panel rotate from the unfolded position to the folded position relative to the base, they also move in the direction close to the base, and when the first door panel and the third door panel rotate from the folded position to the unfolded position relative to the base, they also move in the direction away from the base. During the folding process of the rotating shaft mechanism from the unfolded state to the folded state, the size of the rotating shaft mechanism continuously decreases, and during the folding process of the rotating shaft mechanism from the folded state to the unfolded state, the size of the rotating shaft mechanism continuously increases, so that the size of the rotating shaft mechanism can change with the folding or unfolding of the rotating shaft mechanism, which can reduce the pulling force on the bendable part during the folding process, thereby improving the reliability of the folding screen and being beneficial to extending the service life of the folding screen.

[0033] In a possible implementation of the first aspect of the present application, the third door panel and the first hinge structure are an integral part. That is to say, the third door panel, the third arc-shaped rib and the fourth arc-shaped rib are integrally formed. In this way, the structure of the rotating shaft mechanism can be simplified and the assembly efficiency of the rotating shaft mechanism can be improved.

[0034] In a possible implementation manner of the first aspect of the present application, the other end of the base in the second direction is provided with a second rotation fitting portion; the rotating shaft mechanism includes a second appearance member, the second appearance member is located on the other side of the base in the second direction, the second appearance member is provided with a second fitting portion, and the second fitting portion is rotationally connected to the second rotation fitting portion. Wherein, the rotation center of the second fitting portion and the second rotation fitting portion is the second rotation center line, and the second rotation center line is parallel to the first rotation center line; the second appearance member has a second appearance surface, and the second appearance surface is a part of the appearance surface of the foldable electronic device. In the unfolded state, the second appearance surface is located on the side of the middle appearance surface away from the first appearance surface and faces the same direction as the middle appearance surface. In this way, the second fitting portion is rotationally connected to the second rotation fitting portion, thereby realizing a direct hinge relationship between the second appearance member and the base. In this way, on the one hand, the installation chain between the second appearance member and the base with the middle appearance surface is shortened. Only by ensuring the fitting accuracy of the second fitting portion and the second rotation fitting portion can the effective control of the gap between the second appearance surface and the middle appearance surface be realized, which is beneficial to ensuring that the gap between the second appearance surface and the middle appearance surface reaches the set value; on the other hand, it avoids the problems of low assembly efficiency of the rotating shaft mechanism and increased production cost caused by repeated disassembly and assembly of the rotating shaft mechanism on the production line, which is beneficial to improving the assembly efficiency and reducing the production cost. In addition, it is also beneficial to realize the uniformity of the spacing dimensions at the same gap in different rotating shaft mechanisms.

[0035] In a possible implementation manner of the first aspect of the present application, in the unfolded state, the first appearance surface and the middle appearance surface are coplanar. This is beneficial to improving the stable support of the foldable electronic device on the bearing surface in the unfolded state.

[0036] In a possible implementation manner of the first aspect of the present application, the foldable electronic device includes: a first housing and a second housing. The first housing is disposed on one side of the rotating shaft mechanism, and the first housing has a first support surface; the second housing is disposed on the other side of the rotating shaft mechanism, and the second housing and the first housing are configured to switch between the unfolded state and the folded state through the rotating shaft mechanism. The second housing has a second support surface; the rotating shaft mechanism has a third support surface, and the third support surface is located on the surface of the rotating shaft mechanism facing away from the middle appearance surface. In the unfolded state, the third support surface, the second support surface, and the first support surface are coplanar and face the same direction.

[0037] In a possible implementation manner of the first aspect of the present application, the foldable electronic device includes: a folding screen, the folding screen includes a first display portion, a second display portion, and a bendable portion. The first display portion is supported and fixed on the first support surface, the second display portion is supported and fixed on the second support surface, the bendable portion is connected between the first display portion and the second display portion, and the bendable portion is supported on the third support surface.

[0038] In a second aspect, a rotating shaft mechanism is provided. The rotating shaft mechanism has a deployed state and a folded state, and includes: a base, a first swing arm, and a first decorative member. One side surface of the base in a first direction has an intermediate appearance surface. One end of the base in a second direction is provided with a first rotation mating portion and a first rotation portion. The first rotation portion and the first rotation mating portion are spaced apart in a third direction, where the third direction, the second direction, and the first direction are perpendicular to each other; the first swing arm is on one side of the base in the second direction. The first swing arm is provided with a first pivot portion, and the first pivot portion is rotatably connected to the first rotation portion around a first rotation center line, and the first rotation center line extends along the third direction; the first appearance member is on one side of the base in the second direction. The first appearance member is provided with a first mating portion, and the first mating portion is rotatably connected to the first rotation mating portion around the first rotation center line. The first appearance member and the first swing arm are separately processed parts and are fixedly connected. The first appearance member has a first inner surface and a first appearance surface facing away from each other. The first inner surface faces the first swing arm. In the deployed state, the first appearance surface and the intermediate appearance surface face the same direction.

[0039] According to the rotating shaft mechanism of the present application, by providing a first mating portion on the first appearance member and a first rotation mating portion on the base, the first mating portion and the first rotation mating portion are rotatably connected, thereby realizing a direct hinge relationship between the first appearance member and the base. In this way, on the one hand, the installation chain between the first appearance member and the base with the intermediate appearance surface is shortened. Only by ensuring the mating accuracy of the first mating portion and the first rotation mating portion can the effective control of the gap between the first appearance surface and the intermediate appearance surface be achieved, which is beneficial to ensuring that the gap between the first appearance surface and the intermediate appearance surface reaches the set value; on the other hand, it avoids the problems of low assembly efficiency of the rotating shaft mechanism and increased production cost caused by repeated disassembly and assembly of the rotating shaft mechanism on the production line, which is beneficial to improving the assembly efficiency and reducing the production cost. In addition, it is also beneficial to realize the uniformity of the spacing dimensions at the same gap in different rotating shaft mechanisms.

[0040] In a possible implementation manner of the second aspect of the present application, the first rotation mating portion is a first arc groove, and the first mating portion is a first arc rib, and the first arc rib is received and mated with the first arc groove. In this way, the first rotation center line of the relative rotation between the first appearance member and the base is an imaginary axis, that is, the first rotation center line is located outside the first rotation mating portion and the first mating portion, which is beneficial to reducing the volume of the rotating shaft mechanism on the basis of increasing the relative rotation angle between the first appearance member and the base.

[0041] In a possible implementation of the second aspect of the present application, the first arc groove bulges away from the middle appearance surface. In this way, the center line of the first arc groove can be on the side of the first arc groove close to the middle appearance surface, so that when the foldable electronic device switches from the unfolded state to the folded state, it is convenient for the first appearance member to rotate towards the side where the middle appearance surface faces, so as to achieve the outward folding of the foldable electronic device.

[0042] In a possible implementation of the second aspect of the present application, the first appearance member has a first inner surface, and the first inner surface faces away from the first appearance surface; the first arc rib is fixed to one end of the first inner surface close to the base. In this way, it is beneficial to shorten the extension path of the first arc rib and further improve the structural compactness of the rotating shaft mechanism.

[0043] In a possible implementation of the second aspect of the present application, the base includes: a base body and a middle appearance member. The middle appearance member and the base body are separately processed parts and are relatively fixed. The middle appearance member has a middle appearance surface and a middle inner surface. The middle inner surface faces away from the middle appearance surface and faces the base body. The first arc groove includes a first arc-shaped wall and a second arc-shaped wall facing each other. The center lines of the first arc-shaped wall and the second arc-shaped wall are both the first rotation center line. The first arc-shaped wall is on the side of the second arc-shaped wall close to the middle appearance surface, and at least a part of the first arc-shaped wall is located on the middle appearance member. Since the middle appearance member has a middle appearance surface, the requirements for the appearance of the middle appearance member are relatively high. By forming the middle appearance member and the base body into separately formed parts, it is beneficial to process the middle appearance member using a process with relatively high machining accuracy and process the base body using a process with relatively low machining accuracy, thus facilitating the simplification of the machining and manufacturing process of the base. Moreover, by arranging at least a part of the first arc-shaped wall on the middle appearance member, the direct connection between the first appearance member and the middle appearance member can be realized, shortening the installation chain between the first appearance member and the middle appearance member, effectively controlling the gap between the first appearance surface and the middle appearance surface, being beneficial to ensuring that the gap between the first appearance surface and the middle appearance surface reaches the set value, and avoiding the problems of low assembly efficiency of the rotating shaft mechanism and increased production cost caused by the need to repeatedly disassemble and assemble the rotating shaft mechanism on the production line, being beneficial to improving the assembly efficiency and reducing the production cost.

[0044] In a possible implementation manner of the second aspect of the present application, the first arc-shaped wall is formed on the middle inner surface, and the second arc-shaped wall is formed on the surface of the base body facing the middle appearance member. In this way, by arranging the first arc-shaped wall on the middle inner surface and the second arc-shaped wall on the base body, on the one hand, it is beneficial to simplify the processing and manufacturing of the first arc-shaped groove, and on the other hand, it is beneficial to realize the direct connection between the first appearance member and the middle appearance member, thereby shortening the installation chain between the first appearance member and the middle appearance member, effectively controlling the gap between the first appearance surface and the middle appearance surface, ensuring that the gap between the first appearance surface and the middle appearance surface reaches the set value, and avoiding the problems of low assembly efficiency of the rotating shaft mechanism and increased production cost caused by repeated disassembly and assembly of the rotating shaft mechanism on the production line, which is beneficial to improving the assembly efficiency and reducing the production cost.

[0045] In a possible implementation manner of the second aspect of the present application, a convex block protruding towards the base body is formed on the middle inner surface, the first arc-shaped wall is formed on the surface of the convex block, and a recessed groove for avoiding the convex block is provided on the base body. The groove wall of the recessed groove facing the middle inner surface is the second arc-shaped wall. In this way, the recessed groove and the above-mentioned convex block can enclose the first arc-shaped groove, with a simple structure and convenient for processing and manufacturing. Moreover, the setting of the convex block is also beneficial to improving the structural strength of the middle appearance member. In some other embodiments, the convex block can also be arranged on the base body, and the second arc-shaped wall is formed on the surface of the convex block; at the same time, a recessed groove is opened on the middle inner surface, and the groove wall of the recessed groove facing the base body is the first arc-shaped wall. In this way, the above-mentioned first arc-shaped groove can be formed by the cooperation of the convex block and the recessed groove, with a simple structure and convenient for processing and manufacturing.

[0046] In a possible implementation manner of the second aspect of the present application, a first avoidance groove recessed close to the middle appearance surface is formed on the middle inner surface. In the second direction, the first avoidance groove is located at the end of the convex block away from the first appearance member, and the first arc-shaped wall is connected to the groove wall of the first avoidance groove close to the convex block. In this way, by setting the first avoidance groove, when the foldable electronic device is unfolded to the unfolded state, the first avoidance groove can be used to avoid the first arc-shaped rib, thereby improving the reliability of the cooperation between the first appearance member and the base and preventing the occurrence of jamming.

[0047] In a possible implementation manner of the second aspect of the present application, the first arc groove is formed on the middle appearance member. In this way, it is beneficial to realize the direct connection between the first appearance member and the middle appearance member, thereby shortening the installation chain between the first appearance member and the middle appearance member, effectively controlling the gap between the first appearance surface and the middle appearance surface, ensuring that the gap between the first appearance surface and the middle appearance surface reaches the set value, and avoiding the problems of low assembly efficiency of the rotating shaft mechanism and increased production cost caused by repeated disassembly and assembly of the rotating shaft mechanism on the production line, which is beneficial to improving the assembly efficiency and reducing the production cost.

[0048] In a possible implementation manner of the second aspect of the present application, the first rotating part is a first arc groove, and the first pivoting part is a first arc rib. The first arc rib is received and fitted in the first arc groove. In this way, the first rotation center line of the relative rotation between the first swing arm and the base is an imaginary axis, which is beneficial to reducing the volume of the rotating shaft mechanism on the basis of increasing the relative rotation angle between the first swing arm and the base.

[0049] In a possible implementation manner of the second aspect of the present application, the first arc rib is fixed to one end adjacent to the base on the surface of the first swing arm facing the first door panel. In this way, it is beneficial to shorten the extension path of the first arc rib and further improve the structural compactness of the rotating shaft mechanism. In other examples, the first arc rib can also be fixed to the end face of the first swing arm adjacent to the base.

[0050] In a possible implementation manner of the second aspect of the present application, multiple first arc ribs can be provided on the first swing arm. The multiple first arc ribs are spaced apart in the extending direction of the first rotation center line, and the first arc grooves on the base are also multiple. The multiple first arc grooves are spaced apart in the extending direction of the first rotation center line. One first arc groove corresponds to and cooperates with one first arc rib. In this way, it is beneficial to improve the connection reliability between the first swing arm and the base.

[0051] In a possible implementation manner of the second aspect of the present application, the first arc groove arches away from the middle appearance surface. In this way, the center line of the first arc groove can be on the side of the first arc groove close to the middle appearance surface, so that when the foldable electronic device switches from the unfolded state to the folded state, it is convenient for the first swing arm to rotate towards the side where the middle appearance surface faces to realize the outward folding of the foldable electronic device.

[0052] In a possible implementation of the second aspect of the present application, the rotating shaft mechanism includes: a first door panel located on the side of the first swing arm away from the first appearance member; wherein, a first sliding groove is provided on the first door panel, and a first sliding rail for slidingly cooperating with the first sliding groove is provided on the first swing arm; or, a first sliding rail is provided on the first door panel, and a first sliding groove for slidingly cooperating with the first sliding rail is provided on the first swing arm. In this way, the relative sliding direction between the first swing arm and the first door panel can be guided and limited through the cooperation of the first sliding rail and the first sliding groove, and the reliability of the sliding cooperation between the first swing arm and the first door panel can be improved.

[0053] In a possible implementation of the second aspect of the present application, the rotating shaft mechanism includes a first door panel located on the side of the first swing arm away from the first appearance member. The surface of the first door panel facing the first appearance member is recessed away from the first appearance member to form a first receiving groove. The first receiving groove extends to one end of the first door panel close to the base. The first swing arm is slidably fitted in the first receiving groove. In this way, it is beneficial to reduce the overall thickness of the first swing arm, the first door panel and the first appearance member, thereby reducing the thickness of the rotating shaft mechanism, and further beneficial to reducing the thickness of the foldable electronic device.

[0054] In a possible implementation of the second aspect of the present application, first sliding grooves are respectively formed on two side groove walls of the first receiving groove in the extending direction of the first rotation center line. First sliding rails are respectively provided on two end faces of the first swing arm in the extending direction of the first rotation center line. One first sliding rail cooperates with one first sliding groove. Thus, the relative sliding direction between the first swing arm and the first door panel can be guided and limited at both ends of the first swing arm, and the reliability of the sliding cooperation between the first swing arm and the first door panel can be further improved.

[0055] In a possible implementation of the second aspect of the present application, the first appearance member has a first inner surface which is arranged opposite to the first appearance surface; the rotating shaft mechanism includes: a first door panel located on the side towards which the first inner surface faces, and the first door panel is slidably connected to the first appearance member.

[0056] In a possible implementation of the second aspect of the present application, a first sliding rail is provided on the first door panel, and a first sliding groove for slidingly cooperating with the first sliding rail is provided on the first inner surface; or, a first sliding groove is provided on the first door panel, and a first sliding rail for slidingly cooperating with the first sliding groove is provided on the first inner surface. In this way, the relative sliding direction between the first appearance member and the first door panel can be guided and limited through the cooperation of the first sliding rail and the first sliding groove, and the reliability of the sliding cooperation between the first appearance member and the first door panel can be improved.

[0057] Exemplarily, there are multiple first sliding grooves. The multiple first sliding grooves are spaced apart in the extending direction of the first rotation center line. There are multiple first sliding rails. The multiple first sliding rails are spaced apart in the extending direction of the first rotation center line. One first sliding groove corresponds to and cooperates with one first sliding rail. In this way, the one-to-one correspondence and cooperation between the multiple first sliding grooves and the multiple first sliding rails can guide and limit the relative sliding direction between the first appearance part and the first door panel at multiple positions in the extending direction of the first rotation center line, and can further improve the reliability of the sliding cooperation between the first swing arm and the first door panel.

[0058] In a possible implementation manner of the second aspect of the present application, the first sliding rail is arranged on the first door panel. A limiting flange is formed at one end of the first sliding rail away from the first inner surface. A limiting groove adapted to the limiting flange is further provided on the groove side wall of the first sliding groove. In this way, through the cooperation between the limiting flange and the limiting groove, it is beneficial to prevent the first sliding rail from disengaging from the open end on the side adjacent to the first inner surface of the first sliding groove, and improve the reliability of the cooperation between the first sliding rail and the first sliding groove.

[0059] In a possible implementation manner of the second aspect of the present application, the rotating shaft mechanism includes: a third door panel, the third door panel is located between the first door panel and the base, the third door panel is rotatably connected to the base, the rotation center line of the relative rotation between the third door panel and the base is parallel to the first rotation center line, the third door panel is rotatably connected to the first door panel, and the rotation center line of the relative rotation between the third door panel and the first door panel is parallel to the first rotation center line.

[0060] In a possible implementation manner of the second aspect of the present application, the rotating shaft mechanism further includes a first hinged structure. The third door panel is rotatably connected to the first door panel by means of the first hinged structure, and the third door panel is rotatably connected to the base by means of the first hinged structure.

[0061] In a possible implementation of the second aspect of the present application, the first hinge structure includes a third arc rib and a fourth arc rib. Both the third arc rib and the fourth arc rib are fixed to the third door panel. The first door panel is provided with a third arc chute. The third arc rib is received and fitted in the third arc chute. The base is provided with a fourth arc chute, and the fourth arc rib is received and fitted in the fourth arc chute. In this way, not only is the hinge between the third door panel and the first door panel and between the third door panel and the base realized, but also when the first door panel and the third door panel rotate from the unfolded position to the folded position relative to the base, they also move in the direction close to the base, and when the first door panel and the third door panel rotate from the folded position to the unfolded position relative to the base, they also move in the direction away from the base. During the folding process of the rotating shaft mechanism from the unfolded state to the folded state, the size of the rotating shaft mechanism continuously decreases, and during the folding process of the rotating shaft mechanism from the folded state to the unfolded state, the size of the rotating shaft mechanism continuously increases, so that the size of the rotating shaft mechanism can change with the folding or unfolding of the rotating shaft mechanism, which can reduce the pulling force on the foldable part during the folding process, thereby improving the reliability of the folding screen and being beneficial to extending the service life of the folding screen.

[0062] In a possible implementation of the second aspect of the present application, at the other end of the base in the second direction, there is a second rotation mating part; the rotating shaft mechanism includes a second appearance part, the second appearance part is on the other side of the base in the second direction, the second appearance part is provided with a second mating part, and the second mating part is rotationally connected to the second rotation mating part, wherein the rotation center of the second mating part and the second rotation mating part is the second rotation center line, and the second rotation center line is parallel to the first rotation center line; the second appearance part has a second appearance surface, and the second appearance surface is a part of the appearance surface of the foldable electronic device. In the unfolded state, the second appearance surface is located on the side of the middle appearance surface away from the first appearance surface and faces the same direction as the middle appearance surface. In this way, the second mating part is rotationally connected to the second rotation mating part, thereby realizing the direct hinge relationship between the second appearance part and the base. In this way, on the one hand, the installation chain between the second appearance part and the base with the middle appearance surface is shortened. Only by ensuring the mating accuracy of the second mating part and the second rotation mating part can the effective control of the gap between the second appearance surface and the middle appearance surface be realized, which is beneficial to ensuring that the gap between the second appearance surface and the middle appearance surface reaches the set value; on the other hand, it avoids the problems of low assembly efficiency of the rotating shaft mechanism and increased production cost caused by the need to repeatedly disassemble and assemble the rotating shaft mechanism on the production line, which is beneficial to improving the assembly efficiency and reducing the production cost. In addition, it is also beneficial to realize the uniformity of the spacing dimensions at the same gap in different rotating shaft mechanisms.

[0063] In a possible implementation of the second aspect of the present application, in the unfolded state, the first appearance surface and the middle appearance surface are coplanar. This is beneficial to improving the stable support of the foldable electronic device on the bearing surface in the unfolded state. Brief Description of the Drawings

[0064] Figure 1 is a perspective view of a rotating shaft mechanism in an unfolded state in the related art;

[0065] Figure 2 is a perspective view of a rotating shaft mechanism in a folded state in the related art;

[0066] Figure 3 is a connection schematic diagram of a first appearance part, a base, a second appearance part, a first swing arm and a second swing arm of the rotating shaft mechanism in some embodiments of the present application;

[0067] Figure 4 is a perspective view of a foldable electronic device provided in some embodiments of the present application in an unfolded state;

[0068] Figure 5 is according to Figure 4 a partial exploded structural schematic diagram of the foldable electronic device shown;

[0069] Figure 6 is according to Figure 4 a structural schematic diagram of the foldable electronic device when in a folded state shown;

[0070] Figure 7 is according to Figure 4 a structural schematic diagram of the rotating shaft mechanism in an unfolded state shown;

[0071] Figure 8 is according to Figure 4 a structural schematic diagram of the rotating shaft mechanism when in a folded state shown;

[0072] Figure 9 is according to Figure 7 a structural schematic diagram of the rotating shaft mechanism from another perspective shown;

[0073] Figure 10 is according to Figure 9 a partial exploded schematic diagram of the rotating shaft mechanism shown;

[0074] Figure 11 is according to Figure 8 a cross-sectional structural schematic diagram of the rotating shaft mechanism at the A-A line shown;

[0075] Figure 12 is according to Figure 11 an exploded schematic diagram of the base shown, wherein, Figure 12 the perspective of the base shown in (a) is different from the perspective of the base shown in Figure 12 (b);

[0076] Figure 13 is according toFigure 12 The enlarged view of the circled part at M of the base shown in (b) in

[0077] Figure 14 For the base shown in (a) in Figure 12 The enlarged view of the circled part at C of the base;

[0078] Figure 15 For the Figure 8 The schematic cross-sectional structure diagram of the rotating shaft mechanism shown at the B - B line;

[0079] Figure 16 For the Figure 8 The schematic diagram of the cooperation between the first door panel and the first swing arm shown;

[0080] Figure 17 For the Figure 7 The assembly schematic diagram of the first appearance part, the first door panel and the first swing arm shown;

[0081] Figure 18 For the Figure 17 The enlarged view of the circled part at H of the structure shown;

[0082] Figure 19 For the Figure 7 The exploded view of the base, the third door panel and the first door panel in the rotating shaft mechanism shown;

[0083] Figure 20 For the Figure 8 The schematic cross-sectional structure diagram of the rotating shaft mechanism shown at the K - K;

[0084] Figure 21 For the Figure 8 The schematic cross-sectional structure diagram of the rotating shaft mechanism shown at the F - F. Detailed implementation manners

[0085] In the embodiments of the present application, terms such as "exemplarily" or "for example" are used to represent examples, illustrations or explanations. Any embodiment or design solution described as "exemplarily" or "for example" in the embodiments of the present application should not be construed as being more preferred or having more advantages than other embodiments or design solutions. Exactly speaking, using terms such as "exemplarily" or "for example" aims to present relevant concepts in a specific manner.

[0086] In the description of the embodiments of the present application, the term "and / or" refers to and encompasses any and all possible combinations of one or more of the associated listed items. The term "and / or" is a relational term describing the relationship between associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. Additionally, the character " / " in the present application generally indicates that the associated objects before and after are in an "or" relationship.

[0087] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, the terms "installed", "connected", and "coupled" shall be understood in a broad sense. For example, "connected" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium.

[0088] In the description of the embodiments of the present application, the terms "include", "comprise", or any other variant thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or device including a series of elements not only includes those elements but also includes other elements not explicitly listed, or elements inherent to such process, method, article, or device. Without further limitation, an element defined by the statement "including one..." does not exclude the existence of additional identical elements in the process, method, article, or device including that element. Without further limitation, an element defined by the statement "including one..." does not exclude the existence of additional identical elements in the process, method, article, or device including that element.

[0089] As used herein, "parallel", "perpendicular", and "equal" include the stated situations as well as situations similar to the stated situations, where the range of the similar situations is within an acceptable deviation range, and the acceptable deviation range is determined by those of ordinary skill in the art considering the measurements being discussed and the errors associated with the measurements of a particular quantity (i.e., the limitations of the measurement system). For example, "parallel" includes absolute parallelism and approximate parallelism, where the acceptable deviation range for approximate parallelism can be, for example, within ±10° deviation; "perpendicular" includes absolute perpendicularity and approximate perpendicularity, where the acceptable deviation range for approximate perpendicularity can also be, for example, within ±10° deviation. "Equal" includes absolute equality and approximate equality, where the acceptable deviation range for approximate equality can be, for example, that the difference between the two equal values is less than or equal to 5% of either one of them.

[0090] Please refer to Figure 1 and Figure 2 , Figure 1 is a perspective view of the rotating shaft mechanism 23 in the deployed state in the related art. Figure 2Stereogram of the rotating shaft mechanism 23 in the folded state in the related art. The rotating shaft mechanism 23 includes a base 231, a first door panel 232, a second door panel 233, a third door panel 234, a fourth door panel 235, a first swing arm 236, a second swing arm 237, a first exterior part 238, and a second exterior part 239.

[0091] Among them, the base 231 has an intermediate exterior surface 2315.

[0092] The first swing arm 236 is rotatably connected to one side of the base 231. The first door panel 232 is slidably engaged with the first swing arm 236. The first exterior part 238 is fixed to the first swing arm 236. There is a sliding connection between the first exterior part 238 and the first door panel 232. The third door panel 234 is located between the first door panel 232 and the base 231. The first door panel 232 is rotatably connected to the third door panel 234, and the third door panel 234 is rotatably connected to the base 231. Similarly, the second swing arm 237 is rotatably connected to the other side of the base 231. The second door panel 233 is slidably engaged with the second swing arm 237. The second exterior part 239 is fixed to the second swing arm 237. There is a sliding connection between the second exterior part 239 and the second door panel 233. The fourth door panel 235 is located between the second door panel 233 and the base 231. The second door panel 233 is rotatably connected to the fourth door panel 235, and the fourth door panel 235 is rotatably connected to the base 231. The first exterior part 238 has a first exterior surface 2381. The second exterior part 239 has a second exterior surface 2391.

[0093] The rotating shaft mechanism 23 can be switched between the unfolded state and the folded state. As Figure 1 shown, when the rotating shaft mechanism 23 is in the unfolded state, the first exterior part 238, the base 231, and the second exterior part 239 are arranged side by side, and the exterior surfaces of the three face the same direction. As Figure 2 shown, when the rotating shaft mechanism 23 is in the folded state, the first exterior part 238 faces the second exterior part 239, and the first exterior part 238 and the second exterior part 239 are on the same side of the intermediate exterior surface 2315.

[0094] It can be found from this that the first exterior part 238, the base 231, and the second exterior part 239 can move relative to each other during the folding and unfolding process of the rotating shaft mechanism 23. In order to prevent interference caused by relative movement between the three exterior parts, therefore, there is a gap between any two adjacent exterior parts among the first exterior part 238, the base 231, and the second exterior part 239.

[0095] It is understandable that the gap size between adjacent appearance parts is crucial. When the gap between the appearance parts is large, the internal structural parts of the rotating shaft mechanism 23 are easily exposed; when the gap between the appearance parts is small, there is a problem of rubbing between adjacent appearance parts during the process of the rotating shaft mechanism 23 switching between the unfolded state and the folded state. Therefore, the control of the gap between the appearance parts is crucial.

[0096] In the above-mentioned rotating shaft mechanism 23, since the middle appearance surface 2315 is located on the base 231, the first appearance part 238 is fixed to the first swing arm 236, and the first appearance part 238 is also slidably connected to the first door panel 232, and the first door panel 232 is hinged to the base 231 by means of the third door panel 234. This results in that the first appearance part 238 and the base 231 need to be indirectly connected through at least structures such as the first swing arm 236, the first door panel 232, and the third door panel 234. Therefore, the installation chain between the first appearance part 238 and the base 231 is relatively long. In the actual processing process, each component such as the base 231, the first swing arm 236, the first door panel 232, and the third door panel 234 generally has dimensional tolerances. Limited by the dimensional tolerances of each component, it is often difficult to ensure that the gap between the first appearance part 238 and the base 231 reaches the design value after the rotating shaft mechanism 23 is assembled. Similarly, it is also difficult to ensure that the gap between the second appearance part 239 and the base 231 reaches the design value. In addition, there are also significant differences in the gap between the first appearance part 238 and the base 231 and the gap between the second appearance part 239 and the base 231 among different rotating shaft mechanisms 23, and it is difficult to achieve the uniformity of the gap size.

[0097] To solve this technical problem, in some embodiments of the present application, please refer to Figure 3 , Figure 3 is a connection schematic diagram of the first appearance part 238, the base 231, the second appearance part 239, the first swing arm 236, and the second swing arm 237 of the rotating shaft mechanism 23 in some embodiments of the present application. The first appearance part 238 is provided with a first flanging part 2384. The first flanging part 2384 is provided with a first screw hole 23841. One end of the first swing arm 236 facing away from the base 231 is provided with a fixing hole (not shown in the figure). The first screw 241 is passed through the first screw hole 23841 and the fixing hole. In this way, after the rotating shaft mechanism 23 is assembled on the production line, if it is found that the gap size between the first appearance part 238 and the base 231 does not reach the design value, the method of sleeving different thicknesses or different numbers of first gaskets 242 on the first screw 241 is adopted to adjust the relative position between the first appearance part 238 and the first swing arm 236, and further adjust the gap between the first appearance part 238 and the base 231. The adjustment method between the second appearance part 239 and the base 231 is similar.

[0098] However, with this adjustment method, the rotating shaft mechanism 23 needs to be repeatedly disassembled and assembled on the production line. The assembly efficiency of the rotating shaft mechanism 23 is low, the production cost increases, and it is also difficult to ensure the adjustment accuracy of the gap.

[0099] To solve the above technical problems, from the perspective of shortening the installation chain between the first appearance part and the base, this application proposes a foldable electronic device. In this foldable electronic device, a first mating part is provided on the first appearance part, and a first rotational mating part is provided on the base having an intermediate appearance surface. The first mating part is rotatably connected to the first rotational mating part, thereby realizing a direct hinged relationship between the first appearance part and the base. In this way, on the one hand, the installation chain between the first decorative part and the base can be shortened, effectively controlling the gap between the first decorative part and the base, which is beneficial to ensuring that the gap between the first appearance surface on the first decorative part and the intermediate appearance surface on the base reaches the set value. On the other hand, it avoids the problems of low assembly efficiency of the rotating shaft mechanism and increased production cost caused by repeatedly disassembling and assembling the rotating shaft mechanism on the production line, which is beneficial to improving the assembly efficiency and reducing the production cost. In addition, it is also beneficial to realize the uniformity of the spacing dimensions at the same gap in different rotating shaft mechanisms.

[0100] The foldable electronic device of this application will be described in detail below with reference to the accompanying drawings.

[0101] The embodiments of this application provide a foldable electronic device. The foldable electronic device is various electronic devices including a folding screen and capable of changing the unfolded or folded form of the folding screen and itself. Under different usage requirements, the foldable electronic device can be unfolded to the unfolded state, folded to the folded state, or in an intermediate state between the unfolded state and the folded state. That is to say, the foldable electronic device has at least two states, namely the unfolded state and the folded state. In some cases, it can further include a third state, that is, an intermediate state between the unfolded state and the folded state. It can be understood that the intermediate state does not have only a unique state and can be any one or more states of the foldable electronic device between the unfolded state and the folded state.

[0102] The foldable electronic device in the embodiments of the present application can be a user equipment (UE) or a terminal device, etc. For example, the foldable electronic device can be a portable android device (PAD), a personal digital assistant (PDA), a handheld device with wireless communication function, a computing device, a vehicle-mounted device, a wearable device, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal in industrial control, a wireless terminal in self-driving, a wireless terminal in remote medical, a wireless terminal in smart grid, a wireless terminal in transportation safety, a wireless terminal in smart city, a wireless terminal in smart home, etc., including mobile terminals or fixed terminals. In the embodiments of the present application, the form of the foldable electronic device is not specifically limited.

[0103] Please refer to Figure 4 and Figure 5 , Figure 4 which is a three-dimensional view of the foldable electronic device 100 provided in some embodiments of the present application in the unfolded state. Figure 5 is Figure 4 a partial exploded structural schematic diagram of the foldable electronic device 100 shown in. In this embodiment and the following embodiments, the foldable electronic device 100 is taken as an example of a handheld device with wireless communication function for illustrative purposes. The handheld device with wireless communication function can be, for example, a mobile phone.

[0104] The foldable electronic device 100 includes a folding screen 10 and a support device 20.

[0105] The folding screen 10 is used to display information such as images and videos. The folding screen 10 includes a first display portion 11, a second display portion 12, and a bendable portion 13. The bendable portion 13 is connected between the first display portion 11 and the second display portion 12. At least the bendable portion 13 of the folding screen 10 is a flexible screen structure. The first display portion 11 and the second display portion 12 of the folding screen 10 can be flexible screen structures, can be hard screen structures, or can be partially flexible screen structures and partially hard screen structures, which are not specifically limited herein.

[0106] The foldable screen 10 can be switched between an unfolded state and a folded state. When the foldable screen 10 is in the unfolded state, as Figure 4 shown, the first display portion 11, the second display portion 12, and the bendable portion 13 are arranged in a coplanar manner and have the same orientation. In this state, large-screen display can be achieved, providing users with richer information and a better user experience.

[0107] Please refer to Figure 6 , Figure 6 which is Figure 4 a schematic structural diagram of the foldable electronic device 100 in the folded state as shown. The foldable screen 10 in the foldable electronic device 100 is in the folded state. The first display portion 11 and the second display portion 12 are approximately parallel and face away from each other, that is, the included angle between the first display portion 11 and the second display portion 12 is 360° or approximately 360°. In this state, the foldable electronic device 100 has a small volume, is convenient to carry, and small-screen display can be achieved by means of one of the first display portion 11 and the second display portion 12.

[0108] In some embodiments, when the foldable screen 10 is in the folded state, please continue to refer to Figure 6 , the bendable portion 13 is in a bent state. Specifically, the bendable portion 13 is folded into a generally U shape. In this form, the bendable portion 13 includes an arc segment 133 and first and second connection segments 131 and 132 located on opposite sides of the arc segment 133. The first connection segment 131 is connected between the arc segment 133 and the first display portion 11. The second connection segment 132 is connected between the arc segment 133 and the second display portion 12. The distance between the end of the first connection segment 131 connected to the first display portion 11 and the end of the second connection segment 132 connected to the second display portion 12 is the first distance, and the distance between the end of the first connection segment 131 connected to the arc segment 133 and the end of the second connection segment 132 connected to the arc segment 133 is the second distance, and the second distance is equal to the first distance. It can be understood that when the foldable electronic device 100 is in the folded state, the bendable portion 13 of the foldable screen 10 can also be folded into other shapes according to actual needs, and the present application does not limit this.

[0109] When the foldable electronic device 100 in this embodiment is in the folded state, the foldable screen 10 is located outside the support device 20, and this foldable electronic device 100 is an outward-foldable electronic device. In other embodiments, when the foldable electronic device 100 is in the folded state, the support device 20 can also be protected outside the foldable screen 10, and the foldable screen 10 is not visible to the user, and this foldable electronic device 100 is an inward-foldable electronic device. In this embodiment, the description is made by taking this foldable electronic device 100 as an outward-foldable electronic device as an example.

[0110] The supporting device 20 is used to support and fix the folding screen 10 and allow the folding screen 10 to switch between the unfolded state and the folded state. The supporting device 20 has a supporting surface. The folding screen 10 can continuously cover the supporting surface of the supporting device 20. Through the support of the supporting surface in the supporting device 20, in the unfolded state, the folding screen 10 can be in a flat shape and the display surface of the folding screen 10 can be a plane.

[0111] Please continue to refer to Figure 4 - Figure 6 , the supporting device 20 includes a first housing 21, a second housing 22 and a rotating shaft mechanism 23.

[0112] The first housing 21 is used to fix and support Figure 4 the first display part 11 of the folding screen 10 therein. Specifically, the first housing 21 has a first supporting surface 211. The first housing 21 fixes and supports Figure 4 the first display part 11 of the folding screen 10 therein through the first supporting surface 211. Exemplarily, the connection relationship between the first supporting surface 211 and the first display part 11 of the folding screen 10 includes but is not limited to adhesion.

[0113] The second housing 22 is used to fix and support Figure 4 the second display part 12 of the folding screen 10 therein. Specifically, the second housing 22 has a second supporting surface 221. The second housing 22 fixes and supports Figure 4 the second display part 12 of the folding screen 10 therein through the second supporting surface 221. Exemplarily, the connection relationship between the second supporting surface 221 and the second display part 12 includes but is not limited to adhesion.

[0114] In the above embodiment, the first housing 21 may include a middle frame and a back cover connected together. The middle frame of the first housing 21 has the above-mentioned first supporting surface 211. The back cover of the first housing 21 is located on the side of the middle frame away from the first display part 11. An accommodation cavity is formed between the middle frame and the back cover of the first housing 21, and this accommodation cavity is used to accommodate electronic components such as a main board, a camera module, and a battery. On this basis, the first housing 21 can be connected to the rotating shaft mechanism 23 by means of the middle frame or by means of the back cover.

[0115] Similarly, the second housing 22 may also include a middle frame and a back cover connected together. The middle frame of the second housing 22 has the above-mentioned second supporting surface 221. The back cover is located on the side of the middle frame away from the second display part 12. An accommodation cavity is formed between the middle frame and the back cover of the second housing 22, and this accommodation cavity is used to accommodate electronic components such as a secondary board, a speaker module, and a battery.

[0116] The rotating shaft mechanism 23 is used to support Figure 4The bendable portion 13 of the foldable screen 10 shown in []. Specifically, the rotating shaft mechanism 23 has a third support surface 23a. The rotating shaft mechanism 23 can support the bendable portion 13 of the foldable screen 10 through the third support surface 23a.

[0117] The first housing 21 is disposed on one side of the rotating shaft mechanism 23, and the second housing 22 is disposed on the other side of the rotating shaft mechanism 23. The rotating shaft mechanism 23 is connected between the first housing 21 and the second housing 22, and the first housing 21 and the second housing 22 are configured to be rotatably connected through the rotating shaft mechanism 23 to support the foldable screen 10 to switch between the unfolded state and the folded state.

[0118] Specifically, the rotating shaft mechanism 23 can switch between the unfolded state and the folded state. When the rotating shaft mechanism 23 is in the unfolded state, please continue to refer to Figure 4 and Figure 5 , the third support surface 23a, the second support surface 221, and the first support surface 211 are coplanar and have the same orientation. At this time, the foldable screen 10 is also in the unfolded state. When the rotating shaft mechanism 23 is in the folded state, please continue to refer to Figure 6 , the first housing 21 and the second housing 22 are disposed opposite to each other, and the first support surface 211 and the second support surface 221 face away from each other. At this time, the foldable screen 10 is also in the folded state. The angle between the first housing 21 and the second housing 22, and the angle between the first display portion 11 and the second display portion 12 are approximately 360°, and the first housing 21 and the second housing 22 are located between the first display portion 11 and the second display portion 12.

[0119] Please refer to Figure 7 and Figure 8 , Figure 7 is a schematic structural diagram of the rotating shaft mechanism 23 in the unfolded state according to Figure 4 shown. Figure 8 is a schematic structural diagram of the rotating shaft mechanism 23 in the folded state according to Figure 4 shown. The rotating shaft mechanism 23 includes a base 231, a first door panel 232, a second door panel 233, a third door panel 234, a fourth door panel 235, a first swing arm 236, a second swing arm 237, a first appearance part 238, and a second appearance part 239.

[0120] It can be understood that Figure 7 and Figure 8 only schematically show some components included in the rotating shaft mechanism 23, and the actual shape, actual size, actual position, and actual structure of these components are not limited by Figure 7 and Figure 8 . In some other embodiments, the rotating shaft mechanism 23 may also not include the second door panel 233, the fourth door panel 235, the second swing arm 237, and the second appearance part 239, etc.

[0121] For the convenience of describing the following embodiments, an XYZ coordinate system is established for the base 231. Specifically, the thickness direction of the base 231 is defined as the Z-axis direction (i.e., the first direction), the length direction of the base 231 is defined as the Y-axis direction (i.e., the third direction), and the direction perpendicular to both the Y-axis direction and the Z-axis direction is defined as the X-axis direction (i.e., the second direction). It can be understood that the coordinate system setting can be flexibly set according to actual needs and is not specifically limited herein.

[0122] The base 231 is used to realize the assembly of other components in the rotating shaft mechanism 23. The material of the base 231 includes but is not limited to metal or plastic. The outer contour shape of the longitudinal section of the base 231 (i.e., the section parallel to the XZ direction) includes but is not limited to a rectangle, a hexagon, an octagon, a decagon, a trapezoid or a special shape.

[0123] Specifically, one surface of the base 231 in the Z-axis direction has an intermediate appearance surface 2315. When the rotating shaft mechanism 23 is applied to the foldable electronic device 100, the intermediate appearance surface 2315 is a part of the appearance surface of the foldable electronic device 100.

[0124] The intermediate appearance surface 2315 and the third support surface 23a are at both ends of the rotating shaft mechanism 23. That is, the third support surface 23a is on the surface of the rotating shaft mechanism 23 away from the intermediate appearance surface 2315. The third support surface 23a includes an intermediate support surface 2311. Among them, the other surface of the base 231 in the Z-axis direction is the intermediate support surface 2311. The base 231 supports a part of the bendable part 13 by means of the intermediate support surface 2311.

[0125] The first door panel 232 is located on one side of the base 231 in the X-axis direction and can rotate relative to the base 231 between the unfolded position and the folded position. The first door panel 232 is in the shape of a long strip plate, and the length direction of the first door panel 232 is parallel to the Y-axis direction. The rotation axis of the first door panel 232 is parallel to the Y-axis. The rotating shaft mechanism 23 can be fixedly connected to the first housing 21 by means of the first door panel 232. Exemplarily, the first door panel 232 can be fixedly connected to the first housing 21 by means of bonding, clamping, welding, screw connection, etc. The third support surface 23a includes a first sub-support surface 2321 located on the first door panel 232. The first door panel 232 supports a part of the bendable part 13 by means of the first sub-support surface 2321.

[0126] The second door panel 233 is located on the other side of the base 231 in the X-axis direction and can rotate relative to the base 231 between the deployed position and the folded position. The second door panel 233 is in the shape of a long strip plate, and the length direction of the second door panel 233 is parallel to the Y-axis direction. The rotation axis of the second door panel 233 is parallel to the Y-axis. The rotating shaft mechanism 23 can be fixedly connected to the second housing 22 by means of the second door panel 233. Exemplarily, the second door panel 233 can be fixedly connected to the second housing 22 by bonding, clamping, welding, screw connection, etc. The third support surface 23a includes a second sub-support surface 2331 located on the second door panel 233. The second door panel 233 supports a part of the bendable portion 13 by means of the second sub-support surface 2331.

[0127] The first swing arm 236 is rotatably connected to one side of the base 231 in the X-axis direction. The rotation center line of the first swing arm 236 relative to the base 231 is the first rotation center line. The first rotation center line is parallel to the Y-axis. The first swing arm 236 is located on the side of the first door panel 232 away from the first sub-support surface 2321. The first swing arm 236 is slidably connected to the first door panel 232.

[0128] The second swing arm 237 is rotatably connected to the other side of the base 231 in the X-axis direction. The rotation center line of the second swing arm 237 relative to the base 231 is the second rotation center line. The second rotation center line is parallel to the Y-axis. The second swing arm 237 is located on the side of the second door panel 233 away from the second sub-support surface 2331. The second swing arm 237 is slidably connected to the second door panel 233.

[0129] Please continue to refer to Figure 7 and Figure 8 , the third door panel 234 is located between the first door panel 232 and the base 231. The third door panel 234 is rotatably connected to the first door panel 232 and the third door panel 234 is rotatably connected to the base 231. The rotation axis of the third door panel 234 relative to the first door panel 232 is parallel to the Y-axis direction. The rotation axis of the third door panel 234 relative to the base 231 is parallel to the Y-axis direction. The third support surface 23a includes a third sub-support surface 2341 located on the third door panel 234. The third door panel 234 supports a part of the bendable portion 13 by means of the third sub-support surface 2341.

[0130] The fourth door panel 235 is located between the second door panel 233 and the base 231. The fourth door panel 235 is rotatably connected to the second door panel 233 and the fourth door panel 235 is rotatably connected to the base 231. The axis of rotation for the relative rotation between the fourth door panel 235 and the second door panel 233 is parallel to the Y-axis direction, and the axis of rotation for the relative rotation between the fourth door panel 235 and the base 231 is parallel to the Y-axis direction. The third support surface 23a includes a fourth sub-support surface 2351 located on the fourth door panel 235. The fourth door panel 235 supports a part of the foldable portion 13 by means of the fourth sub-support surface 2351.

[0131] In this way, the base 231, the third door panel 234, the first door panel 232, and the first swing arm 236 can form a four-bar linkage. When the first housing 21 rotates under the action of an external force, the first door panel 232 can rotate with the first housing 21, and then can drive the first swing arm 236 to rotate, and drive the third door panel 234 to rotate relative to the base 231, realizing the relative rotation between the first housing 21 and the base 231. Similarly, the base 231, the fourth door panel 235, the second door panel 233, and the second swing arm 237 can also form a four-bar linkage. When the second housing 22 rotates under the action of an external force, the second door panel 233 can rotate with the second housing 22, and then can drive the second swing arm 237 to rotate, and drive the fourth door panel 235 to rotate relative to the base 231, realizing the relative rotation between the second housing 22 and the base 231. Therefore, the above four-bar linkage in the rotating shaft mechanism 23 can realize the relative rotation between the first housing 21 and the second housing 22, enabling the foldable electronic device 100 to switch between the unfolded state and the folded state.

[0132] Specifically, when the rotating shaft mechanism 23 is in the unfolded state, please continue to refer to Figure 7 , the first door panel 232, the third door panel 234, the base 231, the fourth door panel 235, and the second door panel 233 are arranged side by side in the X-axis direction in sequence, and the first sub-support surface 2321, the third sub-support surface 2341, the intermediate support surface 2311, the fourth sub-support surface 2351, and the second sub-support surface 2331 face the same direction and are coplanar, so that the foldable portion 13 supported thereon is in the unfolded state, improving the flatness of the foldable portion 13.

[0133] When the rotating shaft mechanism 23 is in the folded state, please continue to refer to Figure 8, the first door panel 232 and the second door panel 233 are arranged opposite to each other, and the first sub-support surface 2321 and the second sub-support surface 2331 are arranged back to back. The first sub-support surface 2321 is perpendicular to the middle support surface 2311, and the second sub-support surface 2331 is perpendicular to the middle support surface 2311. The angle between the third sub-support surface 2341 and the middle support surface 2311 is greater than 180° and less than 270°. The angle between the fourth sub-support surface 2351 and the middle support surface 2311 is greater than 180° and less than 270°.

[0134] In some embodiments, the bendable portion 13 can be continuously fixed to the first sub-support surface 2321, the third sub-support surface 2341, the middle support surface 2311, the fourth sub-support surface 2351, and the second sub-support surface 2331 by gluing.

[0135] To improve the support effect of the rotating shaft mechanism 23 on the bendable portion 13 and improve the fitting degree between the rotating shaft mechanism 23 and the bendable portion 13, please continue to refer to Figure 7 - Figure 8 , both the third sub-support surface 2341 and the fourth sub-support surface 2351 are formed as arc-shaped surfaces with the center line parallel to the Y-axis direction.

[0136] In this embodiment, the number of the third door panel 234 and the fourth door panel 235 is one each. It can be understood that in other embodiments, the number of the third door panel 234 and the fourth door panel 235 can also be multiple. When there are multiple third door panels 234, the multiple third door panels 234 are arranged in sequence and at intervals in the arrangement direction of the first door panel 232 and the base 231. Similarly, when there are multiple fourth door panels 235, the multiple fourth door panels 235 are arranged in sequence and at intervals in the arrangement direction of the second door panel 233 and the base 231. Or, in other embodiments, the rotating shaft mechanism 23 may not include the third door panel 234 and the fourth door panel 235.

[0137] In addition, it can also be understood that there can be multiple first swing arms 236. The multiple first swing arms 236 correspond to one first door panel 232. There can be multiple second swing arms 237, and the multiple second swing arms 237 correspond to one second door panel 233. In Figure 7 and Figure 8 In the specific example shown, both the first swing arm 236 and the second swing arm 237 are two. In other examples, both the first swing arm 236 and the second swing arm 237 can also be three, four, five, or one. In addition, the number of the first swing arm 236 and the second swing arm 237 can also be different.

[0138] Please continue to refer to Figure 8 and Figure 9 , Figure 9 For according to Figure 7Schematic diagram of the rotating shaft mechanism 23 from another perspective as shown. The first appearance member 238 has a first appearance surface 2381 and a first inner surface 2382. The first appearance surface 2381 and the first inner surface 2382 are arranged facing away from each other. When the rotating shaft mechanism 23 is applied to the foldable electronic device 100, the first appearance surface 2381 is part of the appearance surface of the foldable electronic device 100. The first appearance member 238 is located on one side of the base 231 in the X-axis direction and is rotatably connected to the base 231. The rotation center line of the first appearance member 238 and the base 231 is the above-mentioned first rotation center line.

[0139] The first appearance member 238 is located on the side of the first swing arm 236 away from the first door panel 232. That is, the first door panel 232 is located on the side of the first swing arm 236 away from the first appearance member 238. At this time, the first inner surface 2382 of the first appearance member 238 faces the first swing arm 236 and the first door panel 232. That is, the first swing arm 236 and the first door panel 232 are located on the side facing the first inner surface 2382.

[0140] The first appearance member 238 is fixedly connected to the first swing arm 236. In this way, the first appearance member 238 moves synchronously with the movement of the first swing arm 236. The first appearance member 238 and the first swing arm 236 can be detachably connected. Exemplarily, the first appearance member 238 and the first swing arm 236 can be connected by screws, snap connections or adhesives. The first swing arm 236 and the first appearance member 238 can also be non-detachably connected. For example, the first swing arm 236 and the first appearance member 238 are welded together.

[0141] The first appearance member 238 and the first swing arm 236 are separately processed parts. That is to say, the first appearance member 238 and the first swing arm 236 are processed separately and then assembled together. In this way, it is more convenient to assemble the rotating shaft mechanism 23.

[0142] In other examples, the two can also be integrally formed parts, or on the premise that the rotating shaft mechanism 23 includes the first appearance member 238, the rotating shaft mechanism 23 does not include the first swing arm 236.

[0143] Please continue to refer to Figure 8 and Figure 9 , the second appearance member 239 has a second appearance surface 2391 and a second inner surface 2392. The second appearance surface 2391 and the second inner surface 2392 are arranged facing away from each other. When the rotating shaft mechanism 23 is applied to the foldable electronic device 100, the second appearance surface 2391 is part of the appearance surface of the foldable electronic device 100.

[0144] The second exterior member 239 is located on one side of the base 231 in the X-axis direction and is rotatably connected to the base 231. The rotation center line of the second exterior member 239 and the base 231 is the above-mentioned second rotation center line.

[0145] The second exterior member 239 is located on the side of the second swing arm 237 away from the second door panel 233. That is, the second door panel 233 is located on the side of the second swing arm 237 away from the second exterior member 239. At this time, the second inner surface 2392 of the second exterior member 239 faces the second swing arm 237 and the second door panel 233. That is, the second swing arm 237 and the second door panel 233 are located on the side facing the second inner surface 2392.

[0146] The second exterior member 239 is fixedly connected to the second swing arm 237. In this way, the second exterior member 239 moves synchronously with the movement of the second swing arm 237.

[0147] The second exterior member 239 and the second swing arm 237 are separately processed parts. That is to say, the second exterior member 239 and the second swing arm 237 are processed separately and then assembled together. In this way, it is more convenient to assemble the rotating shaft mechanism 23.

[0148] When the rotating shaft mechanism 23 is in the unfolded state, please continue to refer to Figure 9 , the first exterior surface 2381, the middle exterior surface 2315, and the second exterior surface 2391 are arranged side by side in the X-axis direction, and the first exterior surface 2381, the middle exterior surface 2315, and the second exterior surface 2391 face the same direction. So as to support the foldable electronic device 100 on a bearing surface (for example, a desktop) in the unfolded state.

[0149] Exemplarily, when the rotating shaft mechanism 23 is in the unfolded state, the first exterior surface 2381, the middle exterior surface 2315, and the second exterior surface 2391 are coplanar. This is beneficial to improving the stable support of the foldable electronic device 100 on the bearing surface in the unfolded state.

[0150] When the rotating shaft mechanism 23 is in the folded state, please refer to Figure 8 , the first exterior surface 2381 faces the second exterior surface 2391. And both are located on the side facing the middle exterior surface 2315. Specifically, the first exterior surface 2381 is perpendicular to the middle exterior surface 2315, and the second exterior surface 2391 is perpendicular to the middle exterior surface 2315.

[0151] Please refer to Figure 10 and Figure 11 Figure 10 is for Figure 9 the partial exploded view of the rotating shaft mechanism 23 shown. Figure 11 is for Figure 8 ​Schematic cross-sectional structure diagram of the rotating shaft mechanism 23 shown at the A-A line. Among them, "at the A-A line" refers to the plane where the A-A line and the arrows at both ends of the A-A line are located. Similar descriptions in the following text should be understood in the same way and will not be repeated. In order to achieve a rotatable connection between the first appearance part 238 and the base 231. The first appearance part 238 is provided with a first matching part 2383. One end of the base 231 in the X-axis direction is provided with a first rotating matching part 2316. The first matching part 2383 is rotationally connected to the first rotating matching part 2316, so that the first appearance part 238 can be switched between the unfolded state and the folded state relative to the base 231 around the first rotation center line.

[0152] In this way, by providing the first matching part 2383 on the first appearance part 238 and the first rotating matching part 2316 on the base 231. The first matching part 2383 is rotationally connected to the first rotating matching part 2316, thus realizing a direct hinge relationship between the first appearance part 238 and the base 231. In this way, on the one hand, the installation chain between the first appearance part 238 and the base 231 with the intermediate appearance surface 2315 is shortened. Only by ensuring the matching accuracy of the first matching part 2383 and the first rotating matching part 2316 can the effective control of the gap between the first appearance surface 2381 and the intermediate appearance surface 2315 be realized, which is beneficial to ensuring that the gap between the first appearance surface 2381 and the intermediate appearance surface 2315 reaches the set value; on the other hand, it avoids the problems of low assembly efficiency of the rotating shaft mechanism 23 and increased production cost caused by repeated disassembly and assembly of the rotating shaft mechanism 23 on the production line, which is beneficial to improving the assembly efficiency and reducing the production cost. In addition, it is also beneficial to realize the uniformity of the spacing dimensions at the same gap in different rotating shaft mechanisms.

[0153] In some embodiments, please continue to refer to Figure 10 and Figure 11 , the first matching part 2383 is the first arc rib 23831. The connection method between the first arc rib 23831 and the first door panel 232 includes but is not limited to welding, gluing, snap connection or screw connection. In other examples, the first arc rib 23831 and the first door panel 232 can also be an integral structure, and the two are integrally formed parts. The extension path of the first arc rib 23831 can be a major arc (that is, an arc with a central angle greater than 180°), a minor arc (that is, an arc with a central angle less than 180°), or a semi-circular arc (that is, an arc with a central angle equal to 180°), which is not specifically limited here. In Figure 10 and Figure 11 the embodiment shown, the extension path of the first arc rib 23831 is a minor arc.

[0154] The first rotation mating portion 2316 is a first arc groove 23161, and the first arc rib 23831 is received and mated with the first arc groove 23161. It can be understood that the center lines of both the first arc groove 23161 and the first arc rib 23831 are the above-mentioned first rotation center line. In this way, the first rotation center line for the relative rotation between the first appearance member 238 and the base 231 is an imaginary axis, which is beneficial to reducing the volume of the rotation shaft mechanism 23 on the basis of increasing the rotation angle of the relative rotation between the first appearance member 238 and the base 231.

[0155] Please continue to refer to Figure 11 , the first arc rib 23831 is fixed to one end of the first inner surface 2382 adjacent to the base 231. In this way, it is beneficial to shorten the extension path of the first arc rib 23831, and further improve the structural compactness of the rotation shaft mechanism 23. In other examples, the first arc rib 23831 can also be fixed to the end face of one end of the first appearance member 238 adjacent to the base 231.

[0156] In some embodiments, there are multiple first arc ribs 23831. The multiple first arc ribs 23831 are spaced apart in the Y-axis direction, and the first arc grooves 23161 are also multiple. The multiple first arc grooves 23161 are spaced apart in the Y-axis direction. One first arc groove 23161 is correspondingly mated with one first arc rib 23831. In this way, it is beneficial to improve the connection reliability between the first appearance member 238 and the base 231, which is beneficial to further improve the assembly stability between the first appearance member 238 and the base 231, and further improve the effective control of the gap between the first appearance surface 2381 and the intermediate appearance surface 2315.

[0157] Exemplarily, the multiple first arc ribs 23831 are equally spaced apart in the Y-axis direction. Also exemplarily, the multiple first arc ribs 23831 are not equally spaced apart in the Y-axis direction.

[0158] Please continue to refer to Figure 11 , for the foldable electronic device 100 with an outward folding type, the first arc groove 23161 arches away from the intermediate appearance surface 2315. In this way, the center line of the first arc groove 23161 can be on the side of the first arc groove 23161 close to the intermediate appearance surface 2315, so that when the foldable electronic device 100 switches from the unfolded state to the folded state, it is convenient for the first appearance member 238 to rotate towards the side where the intermediate appearance surface 2315 faces, so as to realize the outward folding of the foldable electronic device 100.

[0159] In other examples, when the foldable electronic device 100 is an inward folding type electronic device, the first arc groove 23161 arches close to the intermediate appearance surface 2315.

[0160] It is understandable that the forming methods of the first engaging portion 2383 and the first rotational engaging portion 2316 are not limited to this. In other examples, the first rotational engaging portion 2316 may also be a first arc rib, and the first engaging portion 2383 may also be a first arc groove, and the first arc rib is received and engaged with the first arc groove.

[0161] Please continue to refer to Figure 11 , the first arc groove 23161 includes a first arc wall 23162 and a second arc wall 23163 facing each other. The center line of the first arc wall 23162 and the center line of the second arc wall 23163 are both the first rotational center line. The first arc wall 23162 is located between the middle appearance surface 2315 and the second arc wall 23163. That is to say, the first arc wall 23162 is located on the side of the second arc wall 23163 close to the middle appearance surface 2315.

[0162] Please continue to refer to Figure 11 , and in combination with Figure 12 , Figure 12 is a schematic exploded view of the base 231 shown in Figure 11 . Among them, Figure 12 the perspective of the base 231 shown in (a) in Figure 12 is different from the perspective of the base 231 shown in (b) in

[0163] Please continue to refer to Figure 11 and Figure 12 , one end surface of the base body 2318 in the Z-axis direction is the middle support surface 2311. The material of the base body 2318 includes but is not limited to metal or plastic.

[0164] Please continue to refer to Figure 11 and Figure 12 , the middle appearance part 2317 is on the side of the base body 2318 away from the middle support surface 2311. The middle appearance part 2317 has the middle appearance surface 2315 and the middle inner surface 23171. The middle inner surface 23171 faces away from the middle appearance surface 2315. The middle inner surface 23171 faces the base body 2318.

[0165] The middle appearance member 2317 and the base body 2318 are separately formed parts. That is to say, the middle appearance member 2317 and the base body 2318 are processed separately. Since the middle appearance member 2317 has a middle appearance surface 2315, the requirements for the appearance of the middle appearance member 2317 are relatively high. By forming the middle appearance member 2317 and the base body 2318 into separately formed parts, it is beneficial to process the middle appearance member 2317 using a process with relatively high machining accuracy, and it is beneficial to process the base body 2318 using a process with relatively low machining accuracy, thereby facilitating the simplification of the manufacturing process of the base 231.

[0166] The connection methods between the middle appearance member 2317 and the base body 2318 include but are not limited to gluing, welding, snap connection, or screw connection. Exemplarily, please continue to refer to Figure 12 , a second screw hole 23188 is provided on the base body 2318. A second screw post 23177 is provided on the middle inner surface 23171. A second screw (not shown in the figure) passes through the second screw hole 23188 and is fixed on the second screw post 23177. Exemplarily, both the second screw hole 23188 and the second screw post 23177 are multiple and in one-to-one correspondence.

[0167] In other examples, the middle appearance member 2317 and the base body 2318 can also be integrally formed parts, that is, the base 231 is a structural whole.

[0168] On this basis, please continue to refer to Figure 11 , and in combination with Figure 13 , Figure 13 is an enlarged view of the circled part at M of the base 231 shown in (b) of Figure 12 . The first arc-shaped wall 23162 is formed on the middle inner surface 23171.

[0169] Please continue to refer to Figure 11 , and in combination with Figure 14 , Figure 14 is an enlarged view of the circled part at C of the base 231 shown in (a) of Figure 12 . The second arc-shaped wall 23163 is formed on the surface of the base body 2318 facing the middle appearance member 2317.

[0170] In this way, by disposing the first arc-shaped wall 23162 on the middle inner surface 23171 and the second arc-shaped wall 23163 on the base body 2318, on the one hand, it is beneficial to simplify the machining and manufacturing of the first arc-shaped groove 23161, and on the other hand, it is beneficial to realize the direct connection between the first appearance part 238 and the middle appearance part 2317, thereby shortening the installation chain between the first appearance part 238 and the middle appearance part 2317, effectively controlling the gap between the first appearance surface 2381 and the middle appearance surface 2315, ensuring that the gap between the first appearance surface 2381 and the middle appearance surface 2315 reaches the set value, and avoiding the problems of low assembly efficiency of the rotating shaft mechanism 23 and increased production cost caused by repeated disassembly and assembly of the rotating shaft mechanism 23 on the production line, which is beneficial to improving the assembly efficiency and reducing the production cost.

[0171] In some other embodiments, it may also be that a part of the first arc-shaped wall 23162 is formed on the middle inner surface 23171, and the remaining part of the first arc-shaped wall 23162 is formed on the base body 2318. Or, in other embodiments, the entire first arc-shaped groove 23161 may also be opened on the middle appearance part 2317, as long as at least a part of the first arc-shaped wall 23162 is located on the middle appearance part 2317.

[0172] Please continue to refer to Figure 13 and Figure 14 and, in combination with Figure 11 , a convex block 23172 protruding toward the base body 2318 is formed on the middle inner surface 23171. The shape of the convex block 23172 includes but is not limited to a quarter-cylindrical or ellipsoidal cylinder, a third-cylindrical or ellipsoidal cylinder, a semi-cylindrical shape, a combination of a semi-cylinder and a cube, or a special shape.

[0173] The connection method between the convex block 23172 and the middle appearance part 2317 includes but is not limited to gluing, welding, snap connection, or screw connection. In other examples, the convex block 23172 and the middle appearance part 2317 may also be an integrally formed part.

[0174] The first arc-shaped wall 23162 is formed on the surface of the convex block 23172.

[0175] A recessed groove 23181 for avoiding the convex block 23172 is provided on the base body 2318. The groove wall of the recessed groove 23181 facing the middle inner surface 23171 is the second arc-shaped wall 23163. In this way, the recessed groove 23181 and the above-mentioned convex block 23172 can enclose the first arc-shaped groove 23161, with a simple structure and convenient for machining and manufacturing. Moreover, the setting of the convex block 23172 is also beneficial to improving the structural strength of the middle appearance part 2317.

[0176] In some other embodiments, bumps 23172 can also be provided on the base body 2318. On this basis, the second arc-shaped wall 23163 is formed on the surface of the bumps 23172. At the same time, a recessed groove 23181 is formed on the middle inner surface 23171. On this basis, the groove wall of the recessed groove 23181 facing the base body 2318 is the first arc-shaped wall 23162. In this way, the above-mentioned first arc-shaped groove 23161 can be formed by the cooperation of the bumps 23172 and the recessed groove 23181, with a simple structure and being convenient for processing and manufacturing.

[0177] Of course, the present application is not limited thereto. In other embodiments, while the recessed groove 23181 is formed on the base body 2318, no bumps 23172 are provided on the middle appearance member 2317. Instead, grooves are formed on the middle decoration at the same time. At this time, the groove wall of the groove facing the base body 2318 is the first arc-shaped wall 23162. The above-mentioned first arc-shaped groove 23161 is formed by enclosing the groove and the recessed groove 23181 at the same time.

[0178] Please continue to refer to Figure 11 and Figure 13 , a first avoidance groove 23173 is formed on the middle inner surface 23171 and is recessed close to the middle appearance surface 2315. In the X-axis direction, the first avoidance groove 23173 is located at one end of the bumps 23172 away from the first appearance member 238. The first arc-shaped wall 23162 is connected to the groove wall on the side of the first avoidance groove 23173 close to the bumps 23172. In this way, by providing the first avoidance groove 23173, when the foldable electronic device 100 is unfolded to the unfolded state, the first avoidance groove 23173 can be used to avoid the first arc-shaped rib 23831, thereby improving the reliability of the cooperation between the first appearance member 238 and the base 231 and preventing the occurrence of jamming.

[0179] Please refer to Figure 15 , Figure 15 For according to Figure 8Schematic cross-sectional structure diagram of the rotating shaft mechanism 23 shown at the B-B line. In order to achieve the rotatable connection between the first swing arm 236 and the base 231, a first pivot portion 2364 is provided on the first swing arm 236. One end of the base 231 provided with the first rotation fitting portion 2316 is provided with a first rotation portion 2312. The first rotation portion 2312 and the first rotation fitting portion 2316 are spaced apart in the Y-axis direction. The first pivot portion 2364 is rotatably connected to the first rotation portion 2312 around the first rotation center line. In this way, the first swing arm 236 realizes the rotatable connection with the base 231 by means of the rotational cooperation between the first pivot portion 2364 and the first rotation portion 2312. And the rotation center lines between the first swing arm 236 and the base 231 and between the first appearance member 238 and the base 231 are both the first rotation center line, so that their synchronous rotation can be realized, preventing the first appearance member 238 from interfering with the rotation of the first swing arm 236 relative to the base 231, and also preventing the first swing arm 236 from interfering with the rotation of the first appearance member 238 relative to the base 231.

[0180] Furthermore, in this embodiment, the first pivot portion 2364 is a first arc-shaped rib 23641. The connection method between the first arc-shaped rib 23641 and the first swing arm 236 includes but is not limited to welding, gluing, snap connection or screw connection. In other examples, the first arc-shaped rib 23641 and the first swing arm 236 can also be an integral structure, and the two are integrally formed parts. The extension path of the first arc-shaped rib 23641 can be a major arc (i.e., an arc with a central angle greater than 180°), a minor arc (i.e., an arc with a central angle less than 180°), or a semi-circular arc (i.e., an arc with a central angle equal to 180°), and no specific limitation is made here. In Figure 15 the shown embodiment, the extension path of the first arc-shaped rib 23641 is a minor arc.

[0181] The first rotation portion 2312 is a first arc-shaped groove 23121. The first arc-shaped rib 23641 is received and fitted in the first arc-shaped groove 23121. It can be understood that the center lines of the first arc-shaped groove 23121 and the first arc-shaped rib 23641 are both the above-mentioned first rotation center line. In this way, the first rotation center line of the relative rotation between the first swing arm 236 and the base 231 is an imaginary axis, which is beneficial to reducing the volume of the rotating shaft mechanism 23 on the basis of increasing the relative rotation angle between the first swing arm 236 and the base 231.

[0182] Please continue to refer to Figure 15, the first arc-shaped rib 23641 is fixed to one end of the first swing arm 236 adjacent to the base 231 on the surface facing the first door panel 232. In this way, it is beneficial to shorten the extension path of the first arc-shaped rib 23641 and further improve the structural compactness of the rotating shaft mechanism 23. In other examples, the first arc-shaped rib 23641 can also be fixed to the end face of one end of the first swing arm 236 adjacent to the base 231.

[0183] In some embodiments, multiple first arc-shaped ribs 23641 can be provided on the first swing arm 236. The multiple first arc-shaped ribs 23641 are spaced apart in the Y-axis direction, and there are also multiple first arc-shaped grooves 23121 on the base 231. The multiple first arc-shaped grooves 23121 are spaced apart in the Y-axis direction. One first arc-shaped groove 23121 corresponds to and cooperates with one first arc-shaped rib 23641. In this way, it is beneficial to improve the connection reliability between the first swing arm 236 and the base 231.

[0184] In other examples, only one first arc-shaped rib 23641 can also be provided on the first swing arm 236.

[0185] Please continue to refer to Figure 15 , for the foldable electronic device 100 with an outward folding type, the first arc-shaped groove 23121 arches away from the middle appearance surface 2315. In this way, the center line of the first arc-shaped groove 23121 can be on the side close to the middle appearance surface 2315 of the first arc-shaped groove 23121, so that when the foldable electronic device 100 switches from the unfolded state to the folded state, it is convenient for the first swing arm 236 to rotate towards the side where the middle appearance surface 2315 faces, so as to realize the outward folding of the foldable electronic device 100.

[0186] In other examples, when the foldable electronic device 100 is an outward folding type electronic device 100, the first arc-shaped groove 23121 arches close to the middle appearance surface 2315.

[0187] It can be understood that the formation methods of the first pivot part 2364 and the first rotating part 2312 are not limited to this. In other examples, the first rotating part 2312 can also be the first arc-shaped rib 23641, and the first pivot part 2364 can also be the first arc-shaped groove 23121.

[0188] Since the first swing arm 236 is located between the first door panel 232 and the first appearance part 238, in order to reduce the overall thickness of the first swing arm 236, the first door panel 232 and the first appearance part 238, please refer to Figure 16 , Figure 16 According to Figure 8Schematic diagram of the cooperation between the first door panel 232 and the first swing arm 236 as shown. The surface of the first door panel 232 facing the first appearance member 238 is recessed away from the first appearance member 238 (that is, closer to the first sub-support surface 2321) to form a first receiving groove 2326. The first receiving groove 2326 extends to one end of the first door panel 232 close to the base 231 and the first receiving groove 2326 extends to one end of the first door panel 232 away from the base 231.

[0189] In other examples, the first receiving groove 2326 may also only extend to one end of the first door panel 232 close to the base 231. So as to facilitate the cooperation between the first pivot portion 2364 on the first swing arm 236 and the first rotating portion 2312.

[0190] The first swing arm 236 is slidably fitted in the first receiving groove 2326. In this way, it is beneficial to reduce the overall thickness of the first swing arm 236, the first door panel 232 and the first appearance member 238, thereby reducing the thickness of the rotating shaft mechanism 23, and further beneficial to reducing the thickness of the foldable electronic device 100.

[0191] In order to achieve the sliding fit between the first swing arm 236 and the first door panel 232, please continue to refer to Figure 16 , a first sliding groove 2323 is provided on the first door panel 232. The first sliding groove 2323 extends to one end of the first door panel 232 close to the base 231 and the first sliding groove 2323 extends to one end of the first door panel 232 away from the base 231. Exemplarily, the shape of the cross-section of the first sliding groove 2323 includes but is not limited to a dovetail shape.

[0192] A first sliding rail 2365 is provided on the first swing arm 236. The connection manner between the first sliding rail 2365 and the first swing arm 236 includes but is not limited to gluing, welding, snap connection or screw connection. In other examples, the first sliding rail 2365 and the first swing arm 236 may also be an integrally formed part.

[0193] The first sliding rail 2365 is slidably fitted with the first sliding groove 2323. In this way, the relative sliding direction between the first swing arm 236 and the first door panel 232 can be guided and limited through the cooperation between the first sliding rail 2365 and the first sliding groove 2323, and the reliability of the sliding fit between the first swing arm 236 and the first door panel 232 can be improved.

[0194] Specifically, first sliding grooves 2323 are respectively formed on the two side groove walls of the first receiving groove 2326 in the Y-axis direction. First sliding rails 2365 are respectively provided on the end faces at both ends of the first swing arm 236 in the Y-axis direction. One first sliding rail 2365 cooperates with one first sliding groove 2323. Thus, the relative sliding direction between the first swing arm 236 and the first door panel 232 can be guided and limited at both ends of the first swing arm 236 in the Y-axis direction, and the reliability of the sliding fit between the first swing arm 236 and the first door panel 232 can be further improved.

[0195] It can be understood that in other embodiments, the first sliding groove 2323 can also be provided on the first swing arm 236, and the first sliding rail 2365 can be provided on the first door panel 232.

[0196] To achieve the sliding fit between the first appearance part 238 and the first door panel 232, please continue to refer to Figure 16 and, in combination with Figure 17 and Figure 18 , Figure 17 as shown in Figure 7 is an assembly schematic diagram of the first appearance part 238, the first door panel 232 and the first swing arm 236. Figure 18 As shown in Figure 17 is an enlarged view of the circled part at H of the structure shown. A first sliding groove 2322 is provided on the first door panel 232. The first sliding groove 2322 extends to one end of the first door panel 232 close to the base 231 and the first sliding groove 2322 extends to one end of the first door panel 232 far from the base 231. In other examples, the first sliding groove 2322 can also only extend to one end of the first door panel 232 close to the base 231.

[0197] A first sliding rail 23821 is provided on the first inner surface 2382. The connection manner between the first sliding rail 23821 and the first appearance part 238 includes but is not limited to gluing, welding, snap connection or screw connection. In other examples, the first sliding rail 23821 and the first appearance part 238 can also be an integrally formed part. The first sliding rail 23821 slidably cooperates with the first sliding groove 2322. In this way, the relative sliding direction between the first appearance part 238 and the first door panel 232 can be guided and limited through the cooperation between the first sliding rail 23821 and the first sliding groove 2322, and the reliability of the sliding fit between the first appearance part 238 and the first door panel 232 can be improved.

[0198] Exemplarily, there are multiple first sliding grooves 2322. The multiple first sliding grooves 2322 are spaced apart in the Y-axis direction. There are multiple first sliding rails 23821. The multiple first sliding rails 23821 are spaced apart in the Y-axis direction. One first sliding groove 2322 corresponds to and cooperates with one first sliding rail 23821. Thus, the one-to-one correspondence and cooperation between the multiple first sliding grooves 2322 and the multiple first sliding rails 23821 can guide and limit the relative sliding direction between the first appearance member 238 and the first door panel 232 at multiple positions in the Y-axis direction, and can further improve the reliability of the sliding cooperation between the first swing arm 236 and the first door panel 232.

[0199] Specifically, please continue to refer to Figure 18 To prevent the first sliding rail 23821 from disengaging from the first sliding groove 2322, a limiting flange 23822 is formed at one end of the first sliding rail 23821 away from the first inner surface 2382. A limiting groove 23221 adapted to the limiting flange 23822 is further provided on the groove side wall of the first sliding groove 2322. In this way, through the cooperation between the limiting flange 23822 and the limiting groove 23221, it is beneficial to prevent the first sliding rail 23821 from disengaging from the open side adjacent to the first inner surface 2382 of the first sliding groove 2322, and improve the reliability of the cooperation between the first sliding rail 23821 and the first sliding groove 2322.

[0200] Exemplarily, the connection manner between the limiting flange 23822 and the first sliding rail 23821 includes but is not limited to gluing, welding, snap connection or screw connection. In other examples, the limiting flange 23822 and the first sliding rail 23821 may also be integrally formed parts.

[0201] It can be understood that in other embodiments, the first sliding groove 2322 may also be provided on the first appearance member 238, and the first sliding rail 23821 may be provided on the first door panel 232.

[0202] In some embodiments, please refer to Figure 19 , Figure 19 is the exploded view of the base 231, the third door panel 234 and the first door panel 232 in the rotating shaft mechanism 23 shown in Figure 7 . The rotating shaft mechanism 23 further includes a hinged structure 240. The third door panel 234 is rotatably connected to the first door panel 232 by means of the hinged structure 240, and the third door panel 234 is rotatably connected to the base 231 by means of the first hinged structure 240.

[0203] Specifically, please continue to refer to Figure 19, the first hinge structure 240 includes a third arc rib 2401 and a fourth arc rib 2402. Both the third arc rib 2401 and the fourth arc rib 2402 are fixed on one side surface of the third door panel 234 facing away from the third sub-support surface 2341.

[0204] Specifically, the third arc rib 2401 arches away from the third sub-support surface 2341. The third arc rib 2401 includes a first fixed end 24011 and a first free end 24012. The first fixed end 24011 is fixedly connected to one side surface of the third door panel 234 facing away from the third sub-support surface 2341. The first free end 24012 is spaced apart from the third door panel 234. The first free end 24012 is located on the side of the first fixed end 24011 away from the base 231.

[0205] Please continue to refer to Figure 19 , the fourth arc rib 2402 is an arc-shaped rib that arches away from the third sub-support surface 2341. The fourth arc rib 2402 includes a second fixed end 24021 and a second free end 24022. The second fixed end 24021 is fixedly connected to one side surface of the third door panel 234 facing away from the third sub-support surface 2341. The second free end 24022 is spaced apart from the third door panel 234. The second free end 24022 is located on the side of the second fixed end 24021 close to the base 231. The second fixed end 24021 of the fourth arc rib 2402 and the first fixed end 24011 of the third arc rib 2401 are arranged in the length direction of the base 231 (i.e., the Y-axis direction). In this way, the size of the third door panel 234 in the X-axis direction can be reduced, making the structure of the rotating shaft mechanism 23 more compact.

[0206] In some embodiments, the third door panel 234 and the first hinge structure 240 are an integral part. That is, the third door panel 234, the third arc rib 2401 and the fourth arc rib 2402 are integrally formed. In this way, the structure of the rotating shaft mechanism 23 can be simplified and the assembly efficiency of the rotating shaft mechanism 23 can be improved. In other examples, the third arc rib 2401 and the fourth arc rib 2402 can also be fixed to the third door panel 234 by means of bonding, welding, snap connection or screw connection.

[0207] Please refer to Figure 20 , Figure 20 is a schematic cross-sectional structure diagram of the rotating shaft mechanism 23 at K-K shown in Figure 8 . A third arc chute 2324 is provided on the first door panel 232. The third arc rib 2401 is received in the third arc chute 2324 and can move in an arc in the third arc chute 2324.

[0208] On this basis, in order to improve the mating reliability between the third arc rib 2401 and the third arc chute 2324 and prevent the third arc rib 2401 from slipping out of the third arc chute 2324, a first limiting protrusion (not shown in the figure) is provided at the first free end 24012 of the third arc rib 2401, and a second limiting protrusion (not shown in the figure) for mating with the first limiting protrusion is provided in the third arc chute 2324.

[0209] Please refer to Figure 21 , Figure 21 for the cross-sectional structure schematic diagram of the rotating shaft mechanism 23 at F-F shown in Figure 8 . A fourth arc chute 2313 is provided on the base 231. The fourth arc rib 2402 is received in the fourth arc chute 2313 and can move in an arc in the fourth arc chute 2313. On this basis, in order to improve the mating reliability between the fourth arc rib 2402 and the fourth arc chute 2313 and prevent the fourth arc rib 2402 from slipping out of the fourth arc chute 2313, a third limiting protrusion (not shown in the figure) is provided at the second free end 24022 of the fourth arc rib 2402, and a fourth limiting protrusion (not shown in the figure) for mating with the third limiting protrusion is provided in the fourth arc chute 2313.

[0210] In this way, while the first door panel 232 and the third door panel 234 rotate relative to the base 231 from the unfolded position to the folded position, they also move in the direction approaching the base 231. While the first door panel 232 and the third door panel 234 rotate relative to the base 231 from the folded position to the unfolded position, they also move in the direction away from the base 231. Thus, during the folding process of the rotating shaft mechanism 23 from the unfolded state to the folded state, the size of the rotating shaft mechanism 23 continuously decreases, and during the folding process of the rotating shaft mechanism 23 from the folded state to the unfolded state, the size of the rotating shaft mechanism 23 continuously increases, enabling the size of the rotating shaft mechanism 23 to change with the folding or unfolding of the rotating shaft mechanism 23, reducing the pulling force on the foldable part 13 during the folding process, thereby improving the reliability of the folding screen 10 and facilitating the extension of the service life of the folding screen 10.

[0211] Based on the above embodiments, in order to achieve the rotatable connection between the second appearance part 239 and the base 231, please refer back to Figure 10 . A second mating part 2393 is provided on the second appearance part 239. At the other end of the base 231 in the X-axis direction, a second rotational mating part 2319 is provided. The second mating part 2393 is rotationally connected to the second rotational mating part 2319, thereby enabling the second appearance part 239 to switch between the unfolded state and the folded state relative to the base 231 around the second rotation center line.

[0212] In this way, by providing a second mating portion 2393 on the second appearance member 239 and a second rotational mating portion 2319 on the base 231. The second mating portion 2393 is rotationally connected to the second rotational mating portion 2319, thereby achieving a direct hinge relationship between the second appearance member 239 and the base 231. In this way, on the one hand, the installation chain between the second appearance member 239 and the base 231 having the intermediate appearance surface 2315 is shortened. By only ensuring the mating accuracy of the second mating portion 2393 and the second rotational mating portion 2319, the effective control of the gap between the second appearance surface 2391 and the intermediate appearance surface 2315 can be achieved, which is beneficial to ensuring that the gap between the second appearance surface 2391 and the intermediate appearance surface 2315 reaches the set value; on the other hand, it avoids the problems of low assembly efficiency of the rotating shaft mechanism 23 and increased production cost caused by repeated disassembly and assembly of the rotating shaft mechanism 23 on the production line, which is beneficial to improving the assembly efficiency and reducing the production cost. In addition, it is also beneficial to realize the uniformity of the spacing dimensions at the same gap in different rotating shaft mechanisms.

[0213] In some embodiments, please continue to refer to Figure 10 , the second mating portion 2393 is a second arc rib 23931. The connection manner between the second arc rib 23931 and the second door panel 233 includes but is not limited to welding, gluing, snap connection or screw connection. In other examples, the second arc rib 23931 and the second door panel 233 can also be an integral structure, and the two are integrally formed parts. The extension path of the second arc-shaped rib can be a major arc (i.e., an arc with a central angle greater than 180°), a minor arc (i.e., an arc with a central angle less than 180°), or a semi-circular arc (i.e., an arc with a central angle equal to 180°), and no specific limitation is made here. In Figure 10 and Figure 11 In the shown embodiment, the extension path of the second arc-shaped rib is a minor arc.

[0214] The second rotational mating portion 2319 is a second arc groove 23191. The second arc rib 23931 is received and mated with the second arc groove 23191. It can be understood that the center lines of the second arc groove 23191 and the second arc rib 23931 are both the above-mentioned second rotational center line. In this way, the second rotational center line of the relative rotation between the second appearance member 239 and the base 231 is an imaginary axis, which is beneficial to reducing the volume of the rotating shaft mechanism 23 on the basis of increasing the relative rotation angle between the second appearance member 239 and the base 231.

[0215] The second arc rib 23931 is fixed to one end of the second inner surface 2392 adjacent to the base 231. In this way, it is beneficial to shorten the extension path of the second arc rib 23931 and further improve the structural compactness of the rotating shaft mechanism 23. In other examples, the second arc rib 23931 can also be fixed to the end face of one end of the second appearance part 239 adjacent to the base 231.

[0216] In some embodiments, there are multiple second arc ribs 23931. The multiple second arc ribs 23931 are spaced apart in the Y-axis direction, and there are also multiple second arc grooves 23191. The multiple second arc grooves 23191 are spaced apart in the Y-axis direction. One second arc groove 23191 corresponds to and cooperates with one second arc rib 23931. In this way, it is beneficial to improve the reliability of the connection between the second appearance part 239 and the base 231, which is thus beneficial to further improve the assembly stability between the second appearance part 239 and the base 231, and further improve the effective control of the gap between the second appearance surface 2391 and the intermediate appearance surface 2315.

[0217] Exemplarily, the multiple second arc ribs 23931 are equally spaced apart in the Y-axis direction. Also exemplarily, the multiple second arc ribs 23931 are not equally spaced apart in the Y-axis direction.

[0218] It should be noted that the connection relationship between the second appearance part 239 and the second swing arm 237 can refer to the connection relationship between the first appearance part 238 and the first swing arm 236 in the foregoing text. The connection relationship between the second appearance part 239 and the second door panel 233 can refer to the connection relationship between the first appearance part 238 and the first door panel 232 in the foregoing text. For example, one of the second sliding groove and the second sliding rail can be provided on the second appearance part 239, and the other of the second sliding groove and the second sliding rail can be provided on the second door panel 233. The connection relationship between the second swing arm 237 and the base 231 can refer to the connection relationship between the first swing arm 236 and the base 231 in the foregoing text. For example, a second pivot part can be provided on the second swing arm 237, and a second rotating part corresponding to and cooperating with the second pivot part can be provided on the base 231. The connection relationship between the second swing arm 237 and the second door panel 233 can refer to the connection relationship between the first swing arm 236 and the second door panel 233 in the foregoing text. For example, one of the second sliding rail and the second sliding groove can be provided on the second swing arm 237, and the other of the second sliding rail and the second sliding groove can be provided on the second door panel, as well as the second receiving groove on the second door panel. The connection relationship between the second door panel 233 and the fourth door panel 235 can refer to the connection relationship between the first door panel 232 and the third door panel 234 in the foregoing text. The connection relationship between the fourth door panel 235 and the base 231 can refer to the connection relationship between the third door panel 234 and the base 231 in the foregoing text. For example, a second hinge structure can also be provided on the fourth door panel 235. The specific dimensions, mating relationships, etc. of similar structures can refer to the foregoing text and will not be elaborated hereinafter.

[0219] In the description of this specification, specific features, structures, materials, or characteristics can be combined in a suitable manner in any one or more embodiments or examples.

[0220] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and are not intended to limit them. Although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A rotating shaft mechanism, characterized in that, The rotating shaft mechanism has an unfolded state and a folded state, and the rotating shaft mechanism includes: a base and a first appearance member; One side surface of the base in the first direction has an intermediate appearance surface, and one end of the base in the second direction is provided with a first rotation fitting portion, where the second direction is perpendicular to the first direction; When the rotating shaft mechanism is in the unfolded state, the first appearance member is on one side of the base in the second direction. The first appearance member is provided with a first fitting portion, and the first fitting portion is rotatably connected to the first rotation fitting portion. The rotation center line of the first fitting portion and the first rotation fitting portion is the first rotation center line, and the first rotation center line is perpendicular to the first direction and the second direction; the first appearance member has a first appearance surface, and in the unfolded state, the first appearance surface faces the same direction as the intermediate appearance surface.

2. The shaft mechanism according to claim 1, wherein The first rotation fitting portion is a first arc groove, and the first fitting portion is a first arc rib, and the first arc rib is received and fitted in the first arc groove.

3. The rotating shaft mechanism according to claim 2, wherein The first arc groove arches away from the intermediate appearance surface.

4. The shaft mechanism according to claim 2 or 3, characterized in that, The first appearance member has a first inner surface, and the first inner surface faces away from the first appearance surface; The first arc rib is fixed to one end of the first inner surface close to the base.

5. The shaft mechanism according to claim 1, wherein The base includes: a base body; and an intermediate appearance member. The intermediate appearance member and the base body are separately processed parts and are relatively fixed. The intermediate appearance member has the intermediate appearance surface and an intermediate inner surface. The intermediate inner surface faces away from the intermediate appearance surface, and the intermediate inner surface faces the base body. The first arc groove includes a first arc wall and a second arc wall facing each other. The center lines of the first arc wall and the second arc wall are both the first rotation center line. The first arc wall is on the side of the second arc wall close to the intermediate appearance surface, and at least a part of the first arc wall is located on the intermediate appearance member.

6. The shaft mechanism according to claim 5, characterized in that, The first arc wall is formed on the intermediate inner surface, and the second arc wall is formed on the surface of the base body facing the intermediate appearance member.

7. The shaft mechanism according to claim 6, characterized in that The intermediate inner surface is formed with a convex block protruding towards the base body, and the first arc wall is formed on the surface of the convex block. The base body is provided with a recessed groove for avoiding the convex block, and the groove wall of the recessed groove facing the intermediate inner surface is the second arc wall.

8. The shaft mechanism according to claim 7, characterized in that, The intermediate inner surface is formed with a first avoidance groove recessed close to the intermediate appearance surface. In the second direction, the first avoidance groove is located at one end of the convex block away from the first appearance member, and the first arc wall is connected to the side groove wall of the first avoidance groove close to the convex block.

9. The rotating shaft mechanism according to claim 5, wherein, The first arc groove is formed on the intermediate appearance member.

10. The shaft mechanism according to claim 1, characterized in that, The first appearance member has a first inner surface, and the first inner surface is arranged to face away from the first appearance surface; One end of the base provided with the first rotation fitting portion is further provided with a first rotation portion, and the first rotation portion is spaced apart from the first rotation fitting portion in the extending direction of the first rotation center line; The rotating shaft mechanism includes a first swing arm, which is a separately processed part and fixedly connected to the first appearance part. The first swing arm is located on the side facing the first inner surface, and the first swing arm is provided with a first pivoting part, which is rotatably connected to the first rotating part around the first rotation center line.

11. The shaft mechanism according to claim 10, characterized in that, The first rotating part is a first arc-shaped groove, and the first pivoting part is a first arc-shaped rib, and the first arc-shaped rib is received and fitted in the first arc-shaped groove.

12. The rotating shaft mechanism according to claim 10 or 11, characterized in that, The rotating shaft mechanism includes: A first door panel, which is located on the side of the first swing arm away from the first appearance part; Wherein, a first sliding groove is provided on the first door panel, and a first sliding rail for slidingly cooperating with the first sliding groove is provided on the first swing arm; or, a first sliding rail is provided on the first door panel, and a first sliding groove for slidingly cooperating with the first sliding rail is provided on the first swing arm.

13. The shaft mechanism according to claim 10 or 11, characterized in that, The rotating shaft mechanism includes: A first door panel, which is located on the side of the first swing arm away from the first appearance part. The surface of the first door panel facing the first appearance part is recessed away from the first appearance part to form a first receiving groove, and the first receiving groove extends to one end of the first door panel close to the base, and the first swing arm is slidably fitted in the first receiving groove.

14. The shaft mechanism according to claim 1, wherein, The first appearance part has a first inner surface, and the first inner surface is arranged opposite to the first appearance surface; The rotating shaft mechanism includes: A first door panel, which is located on the side facing the first inner surface, and the first door panel is slidably connected to the first appearance part.

15. The shaft mechanism according to claim 14, characterized in that, A first sliding rail is provided on the first door panel, and a first sliding groove for slidingly cooperating with the first sliding rail is provided on the first inner surface; or, A first sliding groove is provided on the first door panel, and a first sliding rail for slidingly cooperating with the first sliding groove is provided on the first inner surface.

16. The shaft mechanism according to claim 12, characterized in that, The rotating shaft mechanism includes: A third door panel, which is located between the first door panel and the base. The third door panel is rotatably connected to the base, and the rotation center line of the relative rotation of the third door panel and the base is parallel to the first rotation center line. The third door panel is rotatably connected to the first door panel, and the rotation center line of the relative rotation of the third door panel and the first door panel is parallel to the first rotation center line.

17. The shaft mechanism according to claim 1, wherein The other end of the base in the second direction is provided with a second rotation mating part; The rotating shaft mechanism includes a second appearance part, which is on the other side of the base in the second direction. The second appearance part is provided with a second mating part, and the second mating part is rotatably connected to the second rotation mating part. Wherein, the rotation center of the second mating part and the second rotation mating part is the second rotation center line, and the second rotation center line is parallel to the first rotation center line; The second appearance part has a second appearance surface. In the unfolded state, the second appearance surface is located on the side of the middle appearance surface away from the first appearance surface and faces the same direction as the middle appearance surface.

18. The shaft mechanism according to claim 1, characterized in that In the unfolded state, the first appearance surface and the middle appearance surface are coplanar.

19. A rotating shaft mechanism, characterized in that, The rotating shaft mechanism has an unfolded state and a folded state, and the rotating shaft mechanism comprises: A base, wherein a side surface of the base in the first direction has an intermediate appearance surface, and an end of the base in the second direction is provided with a first rotational matching portion and a first rotational portion, wherein the first rotational portion and the first rotational matching portion are spaced apart from each other in a third direction, wherein the third direction, the second direction and the first direction are perpendicular to each other; A first swing arm, the first swing arm is located at one side of the base in the second direction, the first swing arm is provided with a first pivot portion, the first pivot portion is rotatably connected to the first rotating portion around a first rotation center line, and the first rotation center line extends along the third direction; The first appearance part, when the rotating shaft mechanism is in the expanded state, the first appearance part is on one side of the base in the second direction, the first appearance part is provided with a first matching portion, the first matching portion is rotatably connected with the first rotating matching portion around the first rotation center line, the first appearance part and the first swing arm are separately processed parts and are fixedly connected, the first appearance part has a first inner surface and a first appearance surface opposite to each other, the first inner surface faces the first swing arm, and in the expanded state, the first appearance surface and the middle appearance surface are in the same direction.

20. A foldable electronic device, characterized in that, The invention comprises the hinge mechanism as described in any one of claims 1 to 19, and the first appearance surface and the middle appearance surface are both part of the appearance surface of the foldable electronic device.

21. The foldable electronic device according to claim 20, wherein, The foldable electronic device comprises: A first shell, the first shell is arranged on one side of the rotating shaft mechanism, and the first shell has a first supporting surface; a second shell, the second shell being disposed on the other side of the rotating shaft mechanism, the second shell and the first shell being configured to switch between an unfolded state and a folded state through the rotating shaft mechanism, the second shell having a second supporting surface; The pivot mechanism has a third support surface, which is located on a side surface of the pivot mechanism away from the middle appearance surface. In the unfolded state, the third support surface, the second support surface, and the first support surface are coplanar and oriented in the same direction.

22. The foldable electronic device according to claim 21, wherein The foldable electronic device comprises: A foldable screen, the foldable screen comprising a first display part, a second display part and a bendable part, the first display part is supported and fixed on the first supporting surface, the second display part is supported and fixed on the second supporting surface, the bendable part is connected between the first display part and the second display part, and the bendable part is supported on the third supporting surface.

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