Hinge mechanism and foldable electronic device

Abstract

The present application provides a hinge mechanism and a foldable electronic device, which relates to the technical field of electronic products. The foldable electronic device comprises: a hinge mechanism. The hinge mechanism has an unfolded state and a folded state, and comprises: a base and a first appearance part; a side surface of the base in the first direction has an intermediate appearance surface, and a first rotational matching part is provided at one end of the base in the second direction; the first appearance part is located on one side of the base in the second direction, and the first appearance part is provided with a first matching part, and the first matching part is rotatably connected with the first rotational matching part; the first appearance part has a first appearance surface, and the first appearance surface and the intermediate appearance surface are both part of the appearance surface of the foldable electronic device, and in the unfolded state, the first appearance surface and the intermediate appearance surface are in the same direction. It is beneficial to reduce the gap between the gaps between multiple appearance parts and the design value, and can facilitate the control of the gaps between multiple appearance parts at least to a certain extent.

Description

Technical Field

[0001] The present application relates to the technical field of electronic products, and in particular to a hinge mechanism and a foldable electronic device. Background Art

[0002] At present, in order to solve the problems of large size and inconvenience in carrying of traditional flat-panel electronic devices, foldable electronic devices have come into being. Generally, in order to realize the folding and unfolding of foldable electronic devices, foldable electronic devices include a hinge mechanism. The hinge mechanism generally includes a plurality of appearance parts that can move relative to each other. The appearance surface of the appearance part forms a 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 refinement of the entire foldable electronic device. When the gap between the appearance parts is large, the internal structural parts of the hinge mechanism are easily exposed; when the gap between the appearance parts is small, there is a problem of scratching between adjacent appearance parts during the switching of the hinge mechanism between the unfolded state and the folded state. Therefore, the gap control between adjacent appearance parts is crucial. However, in the hinge structure in the related art, there is a large gap between the gap between multiple appearance parts and the design value, and the gap control between multiple appearance parts is difficult. Summary of the invention

[0003] The present application provides a hinge mechanism and a foldable electronic device, which are beneficial to reducing the gap between the gaps between multiple appearance parts and the design values, and can facilitate the control of the gaps between the multiple appearance parts at least to a certain extent.

[0004] In order to achieve the above objectives, this application adopts the following technical solutions:

[0005] In a first aspect, a foldable electronic device is provided, the foldable electronic device comprising: a hinge mechanism. The hinge mechanism has an unfolded state and a folded state, and comprises: a base and a first appearance member; a surface of one side 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, wherein 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 matching portion, the first matching portion is rotationally connected with the first rotational matching portion, the rotation center line of the first matching portion and the first rotational matching portion is a 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, the first appearance surface and the intermediate appearance surface are both part of the appearance surface of the foldable electronic device, and in the unfolded state, the first appearance surface and the intermediate appearance surface are in the same direction.

[0006] According to the foldable electronic device of the present application, a first matching portion is provided on the first appearance part, and a first rotating matching portion is provided on the base. The first matching portion is rotatably connected with the first rotating matching portion, 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 appearance part and the base having the intermediate appearance surface is shortened, and only the matching accuracy of the first matching portion and the first rotating matching portion is required to realize effective control of the gap between the first appearance surface and the intermediate appearance surface, which is conducive to ensuring that the gap between the first appearance surface and the intermediate appearance surface reaches the set value; on the other hand, the problem of low assembly efficiency and increased production cost of the shaft mechanism caused by the need to repeatedly disassemble and assemble the shaft mechanism on the production line is avoided, which is conducive to improving assembly efficiency and reducing production costs. In addition, it is also conducive to realizing the uniformity of the spacing size at the same gap in different shaft mechanisms.

[0007] In a possible implementation of the first aspect of the present application, the first rotational matching portion is a first circular arc groove, the first matching portion is a first circular arc rib, and the first circular arc rib is accommodated and matched with the first circular arc groove. In this way, the first rotational center line of relative rotation between the first appearance component and the base is a virtual axis, that is, the first rotational center line is located outside the first rotational matching portion and the first matching portion, which is conducive to reducing the volume of the shaft mechanism on the basis of increasing the rotation angle of relative rotation between the first appearance component and the base.

[0008] In some embodiments, there are multiple first arc ribs. Multiple first arc ribs are spaced apart in the extension direction of the first rotation centerline, and there are also multiple first arc grooves. Multiple first arc grooves are spaced apart in the extension direction of the first rotation centerline. One first arc groove corresponds to one first arc rib. In this way, it is beneficial to improve the reliability of the connection between the first appearance part and the base, thereby further improving the assembly stability between the first appearance part and the base, and further improving the effective control of the gap between the first appearance surface and the intermediate appearance surface.

[0009] In a possible implementation of the first aspect of the present application, the first arc groove is arched away from the middle appearance surface. In this way, the center line of the first arc groove can be located 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 toward the side toward which the middle appearance surface is facing, so as to realize the outward folding of the foldable electronic device.

[0010] In a possible implementation of the first aspect of the present application, the first appearance member has a first inner surface, the first inner surface is opposite to the first appearance surface; the first arc rib is fixed to an end of the first inner surface close to the base. This helps to shorten the extension path of the first arc rib and further improve the structural compactness of the shaft mechanism.

[0011] In a possible implementation of the first aspect of the present application, the base includes: a base body and an intermediate appearance part. The intermediate appearance part and the base body are separate processed parts and are relatively fixed. The intermediate appearance part has an intermediate appearance surface and an intermediate inner surface. The intermediate inner surface is opposite to the intermediate appearance surface and 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 located on the side of the second arc wall close to the intermediate appearance surface. At least a part of the first arc wall is located on the intermediate appearance part. Since the intermediate appearance part has the intermediate appearance surface, the intermediate appearance part has relatively high requirements for appearance. By forming the intermediate appearance part and the base body as separate molded parts, it is convenient to use a process with relatively high processing accuracy to process the intermediate appearance part, and it is convenient to use a process with relatively low processing accuracy to process the base body, thereby simplifying the processing and manufacturing process of the base. Furthermore, at least a portion of the first arc-shaped wall is disposed on the intermediate appearance part, thereby enabling direct connection between the first appearance part and the intermediate appearance part, shortening the installation chain between the first appearance part and the intermediate appearance part, and enabling effective control of the gap between the first appearance surface and the intermediate appearance surface, which is beneficial to ensuring that the gap between the first appearance surface and the intermediate appearance surface reaches a set value, and avoids the need to repeatedly disassemble and assemble the rotating shaft mechanism on the production line, resulting in low assembly efficiency of the rotating shaft mechanism and increased production costs, which is beneficial to improving assembly efficiency and reducing production costs.

[0012] In a possible implementation of the first aspect of the present application, the first arc wall is formed on the middle inner surface, and the second arc wall is formed on the surface of the base body facing the middle appearance part. Thus, by setting the first arc wall on the middle inner surface and the second arc wall on the base body, it is beneficial to simplify the processing and manufacturing of the first circular arc groove on the one hand, and to realize the direct connection between the first appearance part and the middle appearance part on the other hand, so that the installation chain between the first appearance part and the middle appearance part can be shortened, and the gap between the first appearance surface and the middle appearance surface can be effectively controlled, which is beneficial to ensure that the gap between the first appearance surface and the middle appearance surface reaches the set value, and avoids the problem of low assembly efficiency and increased production cost of the shaft mechanism caused by repeated disassembly and assembly of the shaft mechanism on the production line, which is beneficial to improve assembly efficiency and reduce production cost.

[0013] In a possible implementation of the first aspect of the present application, a protrusion protruding toward the base body is formed on the middle inner surface, a first arc-shaped wall is formed on the surface of the protrusion, and a recessed groove for avoiding the protrusion 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 protrusion can form a first circular arc groove, which has a simple structure and is easy to process and manufacture. Moreover, the setting of the protrusion is also conducive to improving the structural strength of the middle appearance part. In other embodiments, the protrusion can also be set on the base body, and the second arc-shaped wall is formed on the surface of the protrusion; 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 circular arc groove can be formed by combining the protrusion and the recessed groove, which has a simple structure and is easy to process and manufacture.

[0014] In a possible implementation of the first aspect of the present application, a first avoidance groove is formed on the middle inner surface and is concave near the middle appearance surface. In the second direction, the first avoidance groove is located at the end of the protrusion away from the first appearance part, and the first arc-shaped wall is connected to the groove wall of the first avoidance groove on one side near the protrusion. 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 arc rib, thereby improving the reliability of the cooperation between the first appearance part and the base and preventing the occurrence of jamming.

[0015] In a possible implementation of the first aspect of the present application, the first arc groove is formed on the middle appearance part. In this way, it is conducive to directly connecting the first appearance part with the middle appearance part, thereby shortening the installation chain between the first appearance part and the middle appearance part, and effectively controlling the gap between the first appearance surface and the middle appearance surface, which is conducive to ensuring that the gap between the first appearance surface and the middle appearance surface reaches a set value, and avoids the problem of low assembly efficiency and increased production cost of the shaft mechanism caused by repeated disassembly and assembly of the shaft mechanism on the production line, which is conducive to improving assembly efficiency and reducing production costs.

[0016] In a possible implementation of the first aspect of the present application, the first appearance part has a first inner surface, and the first inner surface is arranged opposite to the first appearance surface; the end of the base provided with the first rotational matching part is also provided with a first rotating part, and the first rotating part and the first rotating matching part are spaced apart in the extension direction of the first rotational center line; the rotating shaft mechanism includes a first swing arm, the first swing arm and the first appearance part are separate 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 part, and the first pivot part is rotationally connected to the first rotating part around the first rotational center line. In this way, the first swing arm realizes a rotatable connection with the base by means of the rotational matching of the first pivot part and the first rotating part. And the rotational center lines between the first swing arm and the base and between the first appearance part and the base are both the first rotational center lines, so that the synchronous rotation of the two can be realized, and the first appearance part is prevented from interfering with the rotation of the first swing arm relative to the base, and the first swing arm is also prevented from interfering with the rotation of the first appearance part relative to the base 231. At the same time, the simultaneous arrangement of the first swing arm and the first appearance component is conducive to improving the reliability of the connection between the first swing arm and the first appearance component as a whole and the base.

[0017] In a possible implementation of the first aspect of the present application, the first rotating portion is a first arcuate groove, the first pivoting portion is a first arcuate rib, and the first arcuate rib is accommodated and matched with the first arcuate groove. In this way, the first rotation center line of the relative rotation between the first swing arm and the base is a virtual axis, which is conducive 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.

[0018] In a possible implementation of the present application, the first arcuate rib is fixed to one end of the first swing arm on the side surface facing the first door panel and adjacent to the base. This helps to shorten the extension path of the first arcuate rib and further improve the structural compactness of the shaft mechanism. In other examples, the first arcuate rib can also be fixed to one end surface of the first swing arm adjacent to the base.

[0019] In a possible implementation of the first aspect of the present application, a plurality of first arcuate ribs may be provided on the first swing arm. The plurality of first arcuate ribs are arranged at intervals in the extension direction of the first rotation centerline, and the number of first arcuate grooves on the base is also plurality. The plurality of first arcuate grooves are arranged at intervals in the extension direction of the first rotation centerline. One first arcuate groove corresponds to one first arcuate rib. In this way, the reliability of the connection between the first swing arm and the base is improved.

[0020] In a possible implementation of the first aspect of the present application, the first arc-shaped groove is arched away from the middle appearance surface. In this way, the center line of the first arc-shaped groove can be located 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 toward the side toward which the middle appearance surface is facing, so as to realize the outward folding of the foldable electronic device.

[0021] In a possible implementation of the first aspect of the present application, the rotating shaft mechanism includes: a first door panel, the first door panel is located on a side of the first swing arm away from the first appearance member; wherein the first door panel is provided with a first slide groove, and the first swing arm is provided with a first slide rail for slidingly cooperating with the first slide groove; or, the first door panel is provided with a first slide rail, and the first swing arm is provided with a first slide groove for slidingly cooperating with the first slide rail. In this way, the relative sliding direction between the first swing arm and the first door panel can be guided and limited by the cooperation between the first slide rail and the first slide groove, which can improve the reliability of the sliding cooperation between the first swing arm and the first door panel.

[0022] In a possible implementation of the first aspect of the present application, the hinge mechanism includes: a first door panel, the first door panel is located on a 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 in a direction away from the first appearance member to form a first receiving groove. The first receiving groove extends to an 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 hinge mechanism, and further helping to reduce the thickness of the foldable electronic device.

[0023] In a possible implementation of the first aspect of the present application, first slide grooves are respectively formed on the groove walls on both sides of the first accommodating groove in the extension direction of the first rotation centerline. First slide rails are respectively provided on the end faces at both ends of the first swing arm in the extension direction of the first rotation centerline. A first slide rail cooperates with a first slide 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, which can further improve the reliability of the sliding cooperation between the first swing arm and the first door panel.

[0024] In a possible implementation of the first aspect of the present application, the first appearance member has a first inner surface, which is disposed opposite to the first appearance surface; the hinge 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 member, thereby realizing the folding and unfolding of the foldable electronic device.

[0025] 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; 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 component and the first door panel can be guided and limited by the cooperation between the first sliding rail and the first sliding groove, which can improve the reliability of the sliding cooperation between the first appearance component and the first door panel.

[0026] Exemplarily, there are multiple first sliding grooves. Multiple first sliding grooves are spaced apart in the extension direction of the first rotation center line. There are multiple first sliding rails. Multiple first sliding rails are spaced apart in the extension direction of the first rotation center line. One first sliding groove corresponds to one first sliding rail. As a result, multiple first sliding grooves and multiple first sliding rails are matched one by one, so that the relative sliding direction between the first appearance part and the first door panel can be guided and limited at multiple positions in the extension direction of the first rotation center line, which can further improve the reliability of the sliding fit between the first swing arm and the first door panel.

[0027] In a possible implementation of the first aspect of the present application, the first sliding rail is disposed 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 also provided on the side wall of the first sliding groove. In this way, the cooperation between the limiting flange and the limiting groove is helpful to prevent the first sliding rail from escaping from the open opening on one side of the first sliding groove adjacent to the first inner surface, thereby improving the reliability of the cooperation between the first sliding rail and the first sliding groove.

[0028] In a possible implementation of the first aspect of the present application, the pivot 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 third door panel relative to 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 third door panel relative to the first door panel is parallel to the first rotation center line.

[0029] In a possible implementation of the first aspect of the present application, the hinge mechanism further includes a first hinge structure. The third door panel is rotatably connected to the first door panel via the first hinge structure, and the third door panel is rotatably connected to the base via the first hinge structure.

[0030] In a possible implementation of the first aspect of the present application, the first hinge structure includes a third arc rib and a fourth arc rib. The third arc rib and the fourth arc rib are both fixed to the third door panel. A third arc groove is provided on the first door panel. The third arc rib is accommodated and fitted in the third arc groove. A fourth arc groove is provided on the base, and the fourth arc rib is accommodated and fitted in the fourth arc groove. In this way, not only the hinge between the third door panel and the first door panel and the third door panel and the base is realized, but also in this way, 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 a 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 a direction away from the base. During the process of folding the hinge mechanism from the unfolded state to the folded state, the size of the hinge mechanism continues to decrease, and during the process of folding the hinge mechanism from the folded state to the unfolded state, the size of the hinge mechanism continues to increase, so that the size of the hinge mechanism can change with the folding or unfolding of the hinge mechanism, which can reduce the pulling on the bendable part during the folding process, thereby improving the reliability of the folding screen and helping to extend the service life of the folding screen.

[0031] 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, the third door panel, the third arc rib and the fourth arc 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.

[0032] In a possible implementation of the first aspect of the present application, the other end of the base in the second direction is provided with a second rotational mating portion; the hinge 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 mating portion, the second mating portion is rotationally connected with the second rotational mating portion, wherein the rotation center of the second mating portion and the second rotational mating portion is the second rotational center line, and the second rotational center line is parallel to the first rotational center line; the second appearance member has a second appearance surface, the second appearance surface is a part of the appearance surface of the foldable electronic device, and 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 is in the same direction as the middle appearance surface. In this way, the second mating portion is rotationally connected with the second rotational mating portion, thereby realizing a direct hinged relationship between the second appearance member and the base. In this way, on the one hand, the installation chain between the second appearance part and the base with the intermediate appearance surface is shortened, and the gap between the second appearance surface and the intermediate appearance surface can be effectively controlled by only ensuring the matching accuracy of the second matching part and the second rotating matching part, which is conducive to ensuring that the gap between the second appearance surface and the intermediate appearance surface reaches the set value; on the other hand, the problem of low assembly efficiency and increased production cost of the shaft mechanism caused by the need to repeatedly disassemble and assemble the shaft mechanism on the production line is avoided, which is conducive to improving assembly efficiency and reducing production costs. In addition, it is also conducive to achieving uniform spacing dimensions at the same gap in different shaft mechanisms.

[0033] In a possible implementation of the first aspect of the present application, in the unfolded state, the first appearance surface is coplanar with the middle appearance surface, thereby facilitating the foldable electronic device to be stably supported on the bearing surface in the unfolded state.

[0034] In a possible implementation of the first aspect of the present application, a foldable electronic device includes: a first shell and a second shell. The first shell is disposed on one side of a hinge mechanism, and the first shell has a first support surface; the second shell is disposed on the other side of the hinge mechanism, and the second shell and the first shell are configured to switch between an unfolded state and a folded state through the hinge mechanism, and the second shell has a second support surface; the hinge mechanism has a third support surface, and the third support surface is located on a side surface of the hinge mechanism that is away from the middle appearance surface, and 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.

[0035] In a possible implementation of the first aspect of the present application, a foldable electronic device includes: a foldable screen, the foldable screen includes a first display part, a second display part and a bendable part, the first display part is supported and fixed on a first supporting surface, the second display part is supported and fixed on a 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 a third supporting surface.

[0036] In a second aspect, a rotating shaft mechanism is provided, which has an unfolded state and a folded state, and includes: a base, a first swing arm, and a first decorative member. A surface of one side of the base in the first direction has an intermediate appearance surface, and a first rotation matching portion and a first rotation portion are provided at one end of the base in the second direction, and the first rotation portion and the first rotation matching portion are spaced apart and arranged in a third direction, wherein the third direction, the second direction, and the first direction are perpendicular to each other; the first swing arm is located at one side of the base in the second direction, and the first swing arm is provided with a first pivoting portion, and the first pivoting portion is rotationally 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 located at one side of the base in the second direction, and the first appearance member is provided with a first matching portion, and the first matching portion is rotationally connected to the first rotation matching portion around a first rotation center line, and the first appearance member and the first swing arm are separate processed parts and fixedly connected, and the first appearance member has a first inner surface and a first appearance surface that are opposite to each other, and the first inner surface faces the first swing arm, and in the unfolded state, the first appearance surface and the intermediate appearance surface face the same direction.

[0037] According to the rotating shaft mechanism of the present application, a first matching portion is provided on the first appearance part, and a first rotating matching portion is provided on the base. The first matching portion is rotatably connected with the first rotating matching portion, 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 appearance part and the base having the intermediate appearance surface is shortened, and only the matching accuracy of the first matching portion and the first rotating matching portion is required to realize effective control of the gap between the first appearance surface and the intermediate appearance surface, which is conducive to ensuring that the gap between the first appearance surface and the intermediate appearance surface reaches the set value; on the other hand, the problem of low assembly efficiency and increased production cost of the rotating shaft mechanism caused by the need to repeatedly disassemble and assemble the rotating shaft mechanism on the production line is avoided, which is conducive to improving assembly efficiency and reducing production costs. In addition, it is also conducive to realizing the uniformity of the spacing size at the same gap in different rotating shaft mechanisms.

[0038] In a possible implementation of the second aspect of the present application, the first rotational matching portion is a first circular arc groove, the first matching portion is a first circular arc rib, and the first circular arc rib is accommodated and matched with the first circular arc groove. In this way, the first rotational center line of the relative rotation between the first appearance component and the base is a virtual axis, that is, the first rotational center line is located outside the first rotational matching portion and the first matching portion, which is conducive to reducing the volume of the shaft mechanism on the basis of increasing the rotation angle of the relative rotation between the first appearance component and the base.

[0039] In a possible implementation of the second aspect of the present application, the first arc groove is arched away from the middle appearance surface. In this way, the center line of the first arc groove can be located 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 toward the side toward which the middle appearance surface is facing, so as to realize the outward folding of the foldable electronic device.

[0040] In a possible implementation of the second aspect of the present application, the first appearance member has a first inner surface, the first inner surface is opposite to the first appearance surface; the first arc rib is fixed to an end of the first inner surface close to the base. This helps to shorten the extension path of the first arc rib and further improve the structural compactness of the shaft mechanism.

[0041] In a possible implementation of the second aspect of the present application, the base includes: a base body and an intermediate appearance part. The intermediate appearance part and the base body are separate processed parts and are relatively fixed. The intermediate appearance part has an intermediate appearance surface and an intermediate inner surface. The intermediate inner surface is opposite to the intermediate appearance surface and 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 located on the side of the second arc wall close to the intermediate appearance surface. At least a part of the first arc wall is located on the intermediate appearance part. Since the intermediate appearance part has the intermediate appearance surface, the intermediate appearance part has relatively high requirements for appearance. By forming the intermediate appearance part and the base body as separate molded parts, it is convenient to use a process with relatively high processing accuracy to process the intermediate appearance part, and it is convenient to use a process with relatively low processing accuracy to process the base body, thereby simplifying the processing and manufacturing process of the base. Furthermore, at least a portion of the first arc-shaped wall is disposed on the intermediate appearance part, thereby enabling direct connection between the first appearance part and the intermediate appearance part, shortening the installation chain between the first appearance part and the intermediate appearance part, and enabling effective control of the gap between the first appearance surface and the intermediate appearance surface, which is beneficial to ensuring that the gap between the first appearance surface and the intermediate appearance surface reaches a set value, and avoids the need to repeatedly disassemble and assemble the rotating shaft mechanism on the production line, resulting in low assembly efficiency of the rotating shaft mechanism and increased production costs, which is beneficial to improving assembly efficiency and reducing production costs.

[0042] In a possible implementation of the second aspect of the present application, the first arc wall is formed on the middle inner surface, and the second arc wall is formed on the surface of the base body facing the middle appearance part. Thus, by setting the first arc wall on the middle inner surface and the second arc wall on the base body, it is beneficial to simplify the processing and manufacturing of the first circular arc groove on the one hand, and to realize the direct connection between the first appearance part and the middle appearance part on the other hand, so that the installation chain between the first appearance part and the middle appearance part can be shortened, and the gap between the first appearance surface and the middle appearance surface can be effectively controlled, which is beneficial to ensure that the gap between the first appearance surface and the middle appearance surface reaches the set value, and avoids the problem of low assembly efficiency and increased production cost of the shaft mechanism caused by repeated disassembly and assembly of the shaft mechanism on the production line, which is beneficial to improve assembly efficiency and reduce production cost.

[0043] In a possible implementation of the second aspect of the present application, a protrusion protruding toward the base body is formed on the middle inner surface, a first arc-shaped wall is formed on the surface of the protrusion, and a recessed groove for avoiding the protrusion 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 protrusion can form a first circular arc groove, which has a simple structure and is easy to process and manufacture. Moreover, the setting of the protrusion is also conducive to improving the structural strength of the middle appearance part. In other embodiments, the protrusion can also be set on the base body, and the second arc-shaped wall is formed on the surface of the protrusion; 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 circular arc groove can be formed by combining the protrusion and the recessed groove, which has a simple structure and is easy to process and manufacture.

[0044] In a possible implementation of the second aspect of the present application, a first avoidance groove is formed on the middle inner surface and is concave near the middle appearance surface. In the second direction, the first avoidance groove is located at the end of the protrusion away from the first appearance member, and the first arc-shaped wall is connected to the groove wall of the first avoidance groove on one side close to the protrusion. 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 arc rib, thereby improving the reliability of the cooperation between the first appearance member and the base and preventing the occurrence of jamming.

[0045] In a possible implementation of the second aspect of the present application, the first arc groove is formed on the middle appearance part. In this way, it is conducive to directly connecting the first appearance part with the middle appearance part, thereby shortening the installation chain between the first appearance part and the middle appearance part, and effectively controlling the gap between the first appearance surface and the middle appearance surface, which is conducive to ensuring that the gap between the first appearance surface and the middle appearance surface reaches a set value, and avoids the problem of low assembly efficiency and increased production cost of the shaft mechanism caused by repeated disassembly and assembly of the shaft mechanism on the production line, which is conducive to improving assembly efficiency and reducing production costs.

[0046] In a possible implementation of the second aspect of the present application, the first rotating portion is a first arcuate groove, the first pivoting portion is a first arcuate rib, and the first arcuate rib is accommodated and matched with the first arcuate groove. In this way, the first rotation center line of the relative rotation between the first swing arm and the base is a virtual axis, which is conducive 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.

[0047] In a possible implementation of the second aspect of the present application, the first arcuate rib is fixed to one end of the first swing arm on a side surface facing the first door panel and adjacent to the base. This helps to shorten the extension path of the first arcuate rib and further improve the structural compactness of the shaft mechanism. In other examples, the first arcuate rib can also be fixed to one end surface of the first swing arm adjacent to the base.

[0048] In a possible implementation of the second aspect of the present application, a plurality of first arcuate ribs may be provided on the first swing arm. The plurality of first arcuate ribs are arranged at intervals in the extension direction of the first rotation centerline, and the number of first arcuate grooves on the base is also multiple. The plurality of first arcuate grooves are arranged at intervals in the extension direction of the first rotation centerline. One first arcuate groove corresponds to one first arcuate rib. In this way, the reliability of the connection between the first swing arm and the base is improved.

[0049] In a possible implementation of the second aspect of the present application, the first arc-shaped groove is arched away from the middle appearance surface. In this way, the center line of the first arc-shaped groove can be located 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 toward the side toward which the middle appearance surface is facing, so as to realize the outward folding of the foldable electronic device.

[0050] In a possible implementation of the second aspect of the present application, the rotating shaft mechanism includes: a first door panel, the first door panel is located on a side of the first swing arm away from the first appearance member; wherein the first door panel is provided with a first slide groove, and the first swing arm is provided with a first slide rail for slidingly cooperating with the first slide groove; or, the first door panel is provided with a first slide rail, and the first swing arm is provided with a first slide groove for slidingly cooperating with the first slide rail. In this way, the relative sliding direction between the first swing arm and the first door panel can be guided and limited by the cooperation between the first slide rail and the first slide groove, which can improve the reliability of the sliding cooperation between the first swing arm and the first door panel.

[0051] In a possible implementation of the second aspect of the present application, the hinge mechanism includes a first door plate, and the first door plate is located on a side of the first swing arm away from the first appearance member. The surface of the first door plate facing the first appearance member is recessed in a direction away from the first appearance member to form a first receiving groove. The first receiving groove extends to an end of the first door plate 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 plate and the first appearance member, thereby reducing the thickness of the hinge mechanism, and further helping to reduce the thickness of the foldable electronic device.

[0052] In a possible implementation of the second aspect of the present application, first slide grooves are respectively formed on the groove walls on both sides of the first accommodating groove in the extension direction of the first rotation centerline. First slide rails are respectively provided on the end faces at both ends of the first swing arm in the extension direction of the first rotation centerline. A first slide rail cooperates with a first slide 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, which can further improve the reliability of the sliding cooperation between the first swing arm and the first door panel.

[0053] In a possible implementation of the second aspect of the present application, the first appearance part has a first inner surface, which is arranged opposite to the first appearance surface; the hinge mechanism includes: a first door panel, the first door panel is located on the side facing the first inner surface, and the first door panel is slidably connected to the first appearance part.

[0054] 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 component and the first door panel can be guided and limited by the cooperation between the first sliding rail and the first sliding groove, which can improve the reliability of the sliding cooperation between the first appearance component and the first door panel.

[0055] Exemplarily, there are multiple first sliding grooves. Multiple first sliding grooves are spaced apart in the extension direction of the first rotation center line. There are multiple first sliding rails. Multiple first sliding rails are spaced apart in the extension direction of the first rotation center line. One first sliding groove corresponds to one first sliding rail. As a result, multiple first sliding grooves and multiple first sliding rails are matched one by one, so that the relative sliding direction between the first appearance part and the first door panel can be guided and limited at multiple positions in the extension direction of the first rotation center line, which can further improve the reliability of the sliding fit between the first swing arm and the first door panel.

[0056] In a possible implementation of the second aspect of the present application, the first sliding rail is disposed 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 also provided on the side wall of the first sliding groove. In this way, the cooperation between the limiting flange and the limiting groove is helpful to prevent the first sliding rail from escaping from the open opening on one side of the first sliding groove adjacent to the first inner surface, thereby improving the reliability of the cooperation between the first sliding rail and the first sliding groove.

[0057] In a possible implementation of the second aspect of the present application, the pivot 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 third door panel relative to 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 third door panel relative to the first door panel is parallel to the first rotation center line.

[0058] In a possible implementation of the second aspect of the present application, the hinge mechanism further includes a first hinge structure. The third door panel is rotatably connected to the first door panel via the first hinge structure, and the third door panel is rotatably connected to the base via the first hinge structure.

[0059] 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. The third arc rib and the fourth arc rib are both fixed to the third door panel. A third arc groove is provided on the first door panel. The third arc rib is accommodated and fitted in the third arc groove. A fourth arc groove is provided on the base, and the fourth arc rib is accommodated and fitted in the fourth arc groove. In this way, not only the hinge between the third door panel and the first door panel and the third door panel and the base is realized, but also in this way, 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 a 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 a direction away from the base. During the process of folding the hinge mechanism from the unfolded state to the folded state, the size of the hinge mechanism continues to decrease, and during the process of folding the hinge mechanism from the folded state to the unfolded state, the size of the hinge mechanism continues to increase, so that the size of the hinge mechanism can change with the folding or unfolding of the hinge mechanism, which can reduce the pulling on the bendable part during the folding process, thereby improving the reliability of the folding screen and helping to extend the service life of the folding screen.

[0060] In a possible implementation of the second aspect of the present application, the other end of the base in the second direction is provided with a second rotational mating portion; the hinge 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 mating portion, the second mating portion is rotationally connected with the second rotational mating portion, wherein the rotation center of the second mating portion and the second rotational mating portion is the second rotational center line, and the second rotational center line is parallel to the first rotational center line; the second appearance member has a second appearance surface, the second appearance surface is a part of the appearance surface of the foldable electronic device, and 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 is in the same direction as the middle appearance surface. In this way, the second mating portion is rotationally connected with the second rotational mating portion, thereby realizing a direct hinged relationship between the second appearance member and the base. In this way, on the one hand, the installation chain between the second appearance part and the base with the intermediate appearance surface is shortened, and the gap between the second appearance surface and the intermediate appearance surface can be effectively controlled by only ensuring the matching accuracy of the second matching part and the second rotating matching part, which is conducive to ensuring that the gap between the second appearance surface and the intermediate appearance surface reaches the set value; on the other hand, the problem of low assembly efficiency and increased production cost of the shaft mechanism caused by the need to repeatedly disassemble and assemble the shaft mechanism on the production line is avoided, which is conducive to improving assembly efficiency and reducing production costs. In addition, it is also conducive to achieving uniform spacing dimensions at the same gap in different shaft mechanisms.

[0061] In a possible implementation of the second aspect of the present application, in the unfolded state, the first appearance surface is coplanar with the middle appearance surface, thereby facilitating the foldable electronic device to be stably supported on the bearing surface in the unfolded state. BRIEF DESCRIPTION OF THE DRAWINGS

[0062] Figure 1 It is a three-dimensional diagram of a rotating shaft mechanism in the unfolded state in the related art;

[0063] Figure 2 It is a three-dimensional diagram of a rotating shaft mechanism in a folded state in the related art;

[0064] Figure 3 A schematic diagram of the connection between the first appearance member, the base, the second appearance member, the first swing arm and the second swing arm of the rotating shaft mechanism in some embodiments of the present application;

[0065] Figure 4 A three-dimensional diagram of a foldable electronic device in an unfolded state provided by some embodiments of the present application;

[0066] Figure 5 Based on Figure 4 A schematic diagram of a partial exploded structure of a foldable electronic device is shown;

[0067] Figure 6 Based on Figure 4 A schematic diagram of the structure of the foldable electronic device shown in FIG. 1 when the foldable electronic device is in a folded state;

[0068] Figure 7 Based on Figure 4 A schematic structural diagram of the rotating shaft mechanism in an unfolded state is shown;

[0069] Figure 8 Based on Figure 4 A schematic diagram of the structure when the rotating shaft mechanism is in a folded state;

[0070] Fig. 9 Based on Figure 7 A structural schematic diagram of the rotating shaft mechanism from another perspective is shown;

[0071] Fig.10 It is a partial exploded schematic diagram of the rotating shaft mechanism shown in 9;

[0072] Fig.11 Based on Figure 8 The cross-sectional structure diagram of the rotating shaft mechanism at line AA is shown;

[0073] Fig.12 Based on Fig.11 An exploded schematic diagram of the base shown in FIG. Fig.12 The viewing angle of the base shown in (a) is Fig.12 The viewing angle of the base shown in (b) is different;

[0074] Fig.13 Based on Fig.12An enlarged view of the circled portion of the base at position M shown in (b);

[0075] Fig.14 Based on Fig.12 An enlarged view of the circled portion of the base shown in (a) at C;

[0076] Fig.15 Based on Figure 8 The cross-sectional structure diagram of the rotating shaft mechanism at line BB is shown;

[0077] Fig.16 Based on Figure 8 A schematic diagram of the cooperation between the first door panel and the first swing arm shown;

[0078] Fig.17 Based on Figure 7 The assembly diagram of the first appearance component, the first door panel and the first swing arm shown;

[0079] Fig.18 Based on Fig.17 The structure shown is an enlarged view of the circled portion at H;

[0080] Fig.19 Based on Figure 7 An exploded view of the base, the third door panel and the first door panel in the rotating shaft mechanism;

[0081] Fig. 20 Based on Figure 8 The cross-sectional structure diagram of the rotating shaft mechanism at KK is shown;

[0082] Fig.21 Based on Figure 8 The cross-sectional structure diagram of the rotating shaft mechanism at FF is shown. DETAILED DESCRIPTION

[0083] In the embodiments of the present application, the terms "exemplarily" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplarily" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplarily" or "for example" is intended to present related concepts in a specific way.

[0084] In the description of the embodiments of the present application, the term "and / or" refers to and covers any and all possible combinations of one or more of the associated listed items. The term "and / or" is a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in the present application generally indicates that the associated objects before and after are in an "or" relationship.

[0085] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium.

[0086] In the description of the embodiments of the present application, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the statement "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device including the element. In the absence of further restrictions, an element defined by the statement "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0087] As used herein, "parallel", "perpendicular", and "equal" include the situations described and situations similar to the situations described, and the range of the similar situations is within the acceptable deviation range, wherein the acceptable deviation range is determined by a person of ordinary skill in the art taking into account the measurement in question and the errors associated with the measurement of a particular quantity (i.e., the limitations of the measurement system). For example, "parallel" includes absolute parallelism and approximate parallelism, wherein the acceptable deviation range of approximate parallelism can be, for example, a deviation within ±10°; "perpendicular" includes absolute perpendicularity and approximate perpendicularity, wherein the acceptable deviation range of approximate perpendicularity can also be, for example, a deviation within ±10°. "Equal" includes absolute equality and approximate equality, wherein the acceptable deviation range of approximate equality can be, for example, the difference between the two equalities is less than or equal to 5% of either one.

[0088] See also Figure 1 and Figure 2 , Figure 1 is a three-dimensional diagram of a rotating shaft mechanism 23 in the unfolded state in the related art, Figure 2The 3D image is a perspective view of a hinge mechanism 23 in a folded state in the related art. The hinge 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 component 238 and a second appearance component 239.

[0089] The base 231 has a middle appearance surface 2315 .

[0090] The first swing arm 236 is rotatably connected to one side of the base 231. The first door panel 232 is slidably matched with the first swing arm 236. The first appearance component 238 is fixed to the first swing arm 236. The first appearance component 238 is slidably connected to 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 matched with the second swing arm 237. The second appearance component 239 is fixed to the second swing arm 237. The second appearance component 239 is slidably connected to 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 appearance member 238 has a first appearance surface 2381 . The second appearance member 239 has a second appearance surface 2391 .

[0091] The hinge mechanism 23 can be switched between an unfolded state and a folded state. Figure 1 As shown, when the rotating shaft mechanism 23 is in the unfolded state, the first appearance member 238, the base 231 and the second appearance member 239 are arranged side by side, and the appearance surfaces of the three face the same direction. Figure 2 As shown, when the hinge mechanism 23 is in the folded state, the first appearance component 238 faces the second appearance component 239 , and the first appearance component 238 and the second appearance component 239 are located on the same side of the middle appearance surface 2315 .

[0092] It can be seen that the first appearance member 238, the base 231 and the second appearance member 239 can move relative to each other during the folding and unfolding process of the hinge mechanism 23. In order to prevent interference between the relative movements of the three appearance members, there is a gap between any two adjacent appearance members among the first appearance member 238, the base 231 and the second appearance member 239.

[0093] It is understandable that the size of the gap between adjacent appearance parts is crucial. When the gap between appearance parts is large, the internal structural parts of the shaft mechanism 23 are easily exposed; when the gap between appearance parts is small, there is a problem of scratching between adjacent appearance parts during the switching of the shaft mechanism 23 between the unfolded state and the folded state. Therefore, the control of the gap between appearance parts is crucial.

[0094] In the above-mentioned rotating shaft mechanism 23, since the middle appearance surface 2315 is located on the base 231, the first appearance component 238 is fixed to the first swing arm 236, and the first appearance component 238 is 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 component 238 and the base 231 need to be indirectly connected by means of at least the first swing arm 236, the first door panel 232, the third door panel 234 and other structures. Therefore, the installation chain between the first appearance component 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, the third door panel 234 and other components generally have dimensional tolerances. Limited by the dimensional tolerances of each component, it is often difficult to ensure that the gap between the first appearance component 238 and the base 231 reaches the designed value after the rotating shaft mechanism 23 is assembled. Similarly, it is difficult to ensure that the gap between the second appearance member 239 and the base 231 reaches the designed value. In addition, there are large differences between the gaps between the first appearance member 238 and the base 231 and the gaps between the second appearance member 239 and the base 231 among different rotating shaft mechanisms 23, making it difficult to achieve uniform gap sizes.

[0095] In order to solve this technical problem, in some embodiments of the present application, please refer to Figure 3 , Figure 3 The figure is a connection 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 flange portion 2384. The first flange portion 2384 is provided with a first screw hole 23841. The 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 inserted 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 first gasket 242 of different thicknesses or different numbers is applied to the first screw 241 to adjust the relative position of the first appearance part 238 and the first swing arm 236, and then 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.

[0096] However, this adjustment method requires repeated disassembly and assembly of the rotating shaft mechanism 23 on the production line, which results in low assembly efficiency of the rotating shaft mechanism 23 and increased production costs, and it is also difficult to ensure the adjustment accuracy of the gap.

[0097] In order to solve the above technical problems, the present application proposes a foldable electronic device from the perspective of shortening the installation chain between the first appearance part and the base. In the foldable electronic device, a first matching portion is provided on the first appearance part, and a first rotating matching portion is provided on the base having an intermediate appearance surface. The first matching portion is rotatably connected with the first rotating matching portion, 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, and the gap between the first decorative part and the base can be effectively controlled, which is conducive 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 problem of low assembly efficiency and increased production cost of the shaft mechanism caused by the need to repeatedly disassemble and assemble the shaft mechanism on the production line, which is conducive to improving assembly efficiency and reducing production costs. In addition, it is also conducive to achieving the uniformity of the spacing size at the same gap in different shaft mechanisms.

[0098] The foldable electronic device of the present application is described in detail below with reference to the accompanying drawings.

[0099] An embodiment of the present application provides a foldable electronic device. Foldable electronic devices are various electronic devices that include a foldable screen and can change the unfolded or folded form of the foldable screen and itself. Under different usage requirements, the foldable electronic device can be unfolded to an unfolded state, or folded to a folded state, or in an intermediate state between the unfolded state and the folded state. In other words, the foldable electronic device has at least two states, namely, an unfolded state and a folded state. In some cases, a third state may be further included, namely, 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 in which the foldable electronic device is between the unfolded state and the folded state.

[0100] The foldable electronic device in the embodiment of the present application may be a user equipment (UE) or a terminal device, for example, the foldable electronic device may be a tablet computer (portable android device, PAD), a personal digital assistant (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, and other mobile terminals or fixed terminals. In the embodiment of the present application, the form of the foldable electronic device is not specifically limited.

[0101] See also Figure 4 and Figure 5 , Figure 4 A three-dimensional diagram of a foldable electronic device 100 in an unfolded state provided in some embodiments of the present application, Figure 5 Based on Figure 4 The schematic diagram of the partial exploded structure of the foldable electronic device 100 is shown. This embodiment and the following embodiments are exemplified by taking the foldable electronic device 100 as a handheld device with a wireless communication function, and the handheld device with a wireless communication function may be, for example, a mobile phone.

[0102] The foldable electronic device 100 includes a foldable screen 10 and a supporting device 20 .

[0103] The foldable screen 10 is used to display information such as images and videos. The foldable 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 foldable screen 10 is a flexible screen structure. The first display portion 11 and the second display portion 12 of the foldable screen 10 can be a flexible screen structure, or a hard screen structure, or a partially flexible screen structure and a partially hard screen structure, which is not specifically limited here.

[0104] The folding screen 10 can switch between an unfolded state and a folded state. When the folding screen 10 is in the unfolded state, Figure 4 As shown, the first display portion 11, the second display portion 12 and the bendable portion 13 are arranged in the same plane and in the same direction. In this state, a large screen display can be achieved, which can provide users with richer information and bring users a better use experience.

[0105] See also Figure 6 , Figure 6 Based on Figure 4 The structure diagram of the foldable electronic device 100 shown is in a folded state. The foldable screen 10 in the foldable electronic device 100 is in a folded state. The first display part 11 and the second display part 12 are approximately parallel and opposite to each other, that is, the angle between the first display part 11 and the second display part 12 is 360° or approximately 360°. In this state, the foldable electronic device 100 is small in size and easy to carry, and a small screen display can be realized by using one of the first display part 11 and the second display part 12.

[0106] In some embodiments, when the folding 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 a first connecting segment 131 and a second connecting segment 132 located on opposite sides of the arc segment 133. The first connecting segment 131 is connected between the arc segment 133 and the first display portion 11. The second connecting segment 132 is connected between the arc segment 133 and the second display portion 12. The distance between one end of the first connecting segment 131 connecting the first display portion 11 and one end of the second connecting segment 132 connecting the second display portion 12 is a first distance, and the distance between one end of the first connecting segment 131 connecting the arc segment 133 and one end of the second connecting segment 132 connecting the arc segment 133 is a 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 a folded state, the bendable portion 13 of the folding screen 10 can also be folded into other shapes according to actual needs, and this application does not limit this.

[0107] When the foldable electronic device 100 in this embodiment is in a folded state, the foldable screen 10 is located outside the supporting device 20, and the foldable electronic device 100 is an outward-folding foldable electronic device. In other embodiments, when the foldable electronic device 100 is in a folded state, the supporting device 20 can also be protected outside the foldable screen 10, and the foldable screen 10 is invisible to the user, and the foldable electronic device 100 is an inward-folding foldable electronic device. In this embodiment, the foldable electronic device 100 is an outward-folding foldable electronic device as an example for description.

[0108] The support device 20 is used to support and fix the folding screen 10, and allows the folding screen 10 to switch between the unfolded state and the folded state. The support device 20 has a support surface. The folding screen 10 can continuously cover the support surface of the support device 20. Through the support of the support surface in the support device 20, when in the unfolded state, the folding screen 10 can be flat and the display surface of the folding screen 10 can be flat.

[0109] Please continue reading Figure 4-Figure 6 The supporting device 20 includes a first shell 21, a second shell 22 and a rotating shaft mechanism 23.

[0110] The first housing 21 is used to fix and support Figure 4 The first display portion 11 of the folding screen 10. Specifically, the first housing 21 has a first support surface 211. The first housing 21 is fixed and supported by the first support surface 211. Figure 4 The first display part 11 of the folding screen 10. 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 gluing.

[0111] The second housing 22 is used to fix and support Figure 4 The second display portion 12 of the folding screen 10. Specifically, the second housing 22 has a second support surface 221. The second housing 22 is fixed and supported by the second support surface 221. Figure 4 The second display part 12 of the middle folding screen 10. Exemplarily, the connection relationship between the second supporting surface 221 and the second display part 12 includes but is not limited to gluing.

[0112] In the above embodiment, the first shell 21 may include a middle frame and a back cover connected together. The middle frame of the first shell 21 has the above-mentioned first support surface 211. The back cover of the first shell 21 is located on the side of the middle frame away from the first display portion 11. A receiving cavity is formed between the middle frame and the back cover of the first shell 21, and the receiving cavity is used to accommodate electronic components such as a motherboard, a camera module, and a battery. On this basis, the first shell 21 can be connected to the hinge mechanism 23 with the help of the middle frame, and can also be connected to the hinge mechanism 23 with the help of the back cover.

[0113] 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 second support surface 221 mentioned above. The back cover is located on the side of the middle frame away from the second display portion 12. A receiving cavity is formed between the middle frame and the back cover of the second housing 22, and the receiving cavity is used to receive electronic components such as a sub-board, a speaker module, and a battery.

[0114] The shaft mechanism 23 is used to support Figure 4The bendable portion 13 of the foldable screen 10 shown in FIG. Specifically, the hinge mechanism 23 has a third supporting surface 23 a. The hinge mechanism 23 can support the bendable portion 13 of the foldable screen 10 through the third supporting surface 23 a.

[0115] The first housing 21 is disposed on one side of the hinge mechanism 23, and the second housing 22 is disposed on the other side of the hinge mechanism 23. The hinge 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 hinge mechanism 23 to support the folding screen 10 to switch between the unfolded state and the folded state.

[0116] Specifically, the hinge mechanism 23 can be switched between an unfolded state and a folded state. Figure 4 and Figure 5 , the third support surface 23a, the second support surface 221 and the first support surface 211 are coplanar and oriented in the same direction. At this time, the folding screen 10 is also in the unfolded state. When the hinge mechanism 23 is in the folded state, please continue to refer to Figure 6 The first shell 21 and the second shell 22 are arranged opposite to each other, and the first supporting surface 211 and the second supporting surface 221 are opposite to each other. At this time, the folding screen 10 is also in a folded state. The angle between the first shell 21 and the second shell 22, and the angle between the first display part 11 and the second display part 12 are approximately 360°, and the first shell 21 and the second shell 22 are located between the first display part 11 and the second display part 12.

[0117] See also Figure 7 and Figure 8 , Figure 7 Based on Figure 4 FIG. 2 is a schematic structural diagram of the rotating shaft mechanism 23 in an unfolded state. Figure 8 Based on Figure 4 The structure diagram of the rotating shaft mechanism 23 when it is in a folded state is 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 component 238 and a second appearance component 239.

[0118] Understandably, Figure 7 and Figure 8 Only some components of the rotating shaft mechanism 23 are schematically shown, and the actual shape, size, position and structure of these components are not subject to the present invention. Figure 7 and Figure 8 In some other embodiments, the hinge mechanism 23 may not include the second door panel 233, the fourth door panel 235, the second swing arm 237, the second appearance component 239, etc.

[0119] In order to facilitate the description of 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 the X-axis direction (i.e., the second direction). It is understandable that the coordinate system setting can be flexibly set according to actual needs and is not specifically limited here.

[0120] The base 231 is used to realize the assembly of other parts 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 (i.e., the section parallel to the XZ direction) of the base 231 includes but is not limited to a rectangle, a hexagon, an octagon, a decagon, a trapezoid or a special shape.

[0121] Specifically, one side surface of the base 231 in the Z-axis direction has an intermediate appearance surface 2315. When the hinge 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.

[0122] The middle appearance surface 2315 and the third support surface 23a are located at both ends of the rotating shaft mechanism 23. That is, the third support surface 23a is located on the side surface of the rotating shaft mechanism 23 away from the middle appearance surface 2315. The third support surface 23a includes a middle support surface 2311. Among them, the other side surface of the base 231 in the Z-axis direction is the middle support surface 2311. The base 231 supports a part of the bendable portion 13 by means of the middle support surface 2311.

[0123] The first door panel 232 is located on one side of the base 231 in the X-axis direction, and can rotate between an unfolded position and a folded position relative to the base 231. The first door panel 232 is in the shape of a long strip, 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 hinge mechanism 23 can be fixedly connected to the first shell 21 with the help of the first door panel 232. Exemplarily, the first door panel 232 can be fixedly connected to the first shell 21 by bonding, clamping, welding, screw connection, etc. The third supporting surface 23a includes a first sub-supporting surface 2321 located on the first door panel 232. The first door panel 232 supports a part of the bendable portion 13 with the help of the first sub-supporting surface 2321.

[0124] The second door panel 233 is located on the other side of the base 231 in the X-axis direction, and can rotate between the unfolded position and the folded position relative to the base 231. The second door panel 233 is in the shape of a long strip, 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 hinge mechanism 23 can be fixedly connected to the second shell 22 by means of the second door panel 233. Exemplarily, the second door panel 233 can be fixedly connected to the second shell 22 by bonding, clamping, welding, screw connection, etc. The third supporting surface 23a includes a second sub-supporting 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-supporting surface 2331.

[0125] 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.

[0126] 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.

[0127] Please continue reading 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 relative rotation between the third door panel 234 and the first door panel 232 is parallel to the Y-axis direction. The rotation axis of the relative rotation between the third door panel 234 and the base 231 is parallel to the Y-axis direction. The third supporting surface 23a includes a third sub-supporting 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-supporting surface 2341.

[0128] 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 rotation axis of the fourth door panel 235 relative to the second door panel 233 is parallel to the Y-axis direction, and the rotation axis of the fourth door panel 235 relative to the base 231 is parallel to the Y-axis direction. The third supporting surface 23a includes a fourth sub-supporting surface 2351 located on the fourth door panel 235. The fourth door panel 235 supports a portion of the bendable portion 13 by means of the fourth sub-supporting surface 2351.

[0129] 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 drive the first swing arm 236 to rotate, and drive the third door panel 234 to rotate relative to the base 231, so as to achieve 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 drive the second swing arm 237 to rotate, and drive the fourth door panel 235 to rotate relative to the base 231, so as to achieve relative rotation between the second housing 22 and the base 231. Therefore, the above-mentioned four-bar linkage in the hinge mechanism 23 can realize the relative rotation between the first shell 21 and the second shell 22, so that the foldable electronic device 100 can be switched between the unfolded state and the folded state.

[0130] Specifically, when the 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 in parallel in the X-axis direction, and 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 are arranged in the same direction and in the same plane, so that the bendable part 13 supported thereon is in an unfolded state, thereby improving the flatness of the bendable part 13.

[0131] When the shaft mechanism 23 is in the folded state, please continue to refer to Figure 8The 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 opposite to each other. The first sub-support surface 2321 is arranged perpendicularly to the middle support surface 2311, and the second sub-support surface 2331 is arranged perpendicularly 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°.

[0132] In some embodiments, the bendable portion 13 may 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.

[0133] In order to improve the supporting effect of the rotating shaft mechanism 23 on the bendable portion 13 and improve the fit between the rotating shaft mechanism 23 and the bendable portion 13, please continue to refer to Figure 7-Figure 8 The third sub-support surface 2341 and the fourth sub-support surface 2351 are both formed as arc-shaped surfaces whose center lines are parallel to the Y-axis direction.

[0134] In this embodiment, the number of the third door panel 234 and the fourth door panel 235 are both one. It is understood that in other embodiments, the number of the third door panel 234 and the fourth door panel 235 may also be multiple. When there are multiple third door panels 234, the multiple third door panels 234 are sequentially arranged and spaced 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 sequentially arranged and spaced in the arrangement direction of the second door panel 233 and the base 231. Alternatively, in other embodiments, the rotating shaft mechanism 23 may not include the third door panel 234 and the fourth door panel 235.

[0135] In addition, it can be understood that there can be multiple first swing arms 236. Multiple first swing arms 236 correspond to one first door panel 232. There can be multiple second swing arms 237, and multiple second swing arms 237 correspond to one second door panel 233. Figure 7 and Figure 8 In the specific example shown, there are two first swing arms 236 and two second swing arms 237. In other examples, there are three, four, five, or one first swing arm 236 and two swing arms 237. In addition, the number of the first swing arm 236 and the second swing arm 237 may also be different.

[0136] Please continue reading Figure 8 and Fig. 9 , Fig. 9 Based on Figure 7Schematic diagram of the structure of the hinge mechanism 23 from another perspective 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 opposite to each other. When the hinge mechanism 23 is applied to the foldable electronic device 100, the first appearance surface 2381 is a 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 centerline of the first appearance member 238 and the base 231 is the above-mentioned first rotation centerline.

[0137] 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 that the first inner surface 2382 faces.

[0138] 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, clamping or gluing. 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.

[0139] The first appearance component 238 and the first swing arm 236 are separately processed components. In other words, the first appearance component 238 and the first swing arm 236 are processed separately and then assembled together. In this way, the assembly of the rotating shaft mechanism 23 is more convenient.

[0140] In other examples, the two may also be an integrally formed part, or, under the premise that the rotating shaft mechanism 23 includes the first appearance part 238 , the rotating shaft mechanism 23 does not include the first swing arm 236 .

[0141] Please continue reading Figure 8 and Fig. 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 opposite to each other. When the hinge mechanism 23 is applied to the foldable electronic device 100, the second appearance surface 2391 is a part of the appearance surface of the foldable electronic device 100.

[0142] The second appearance component 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 between the second appearance component 239 and the base 231 is the second rotation center line mentioned above.

[0143] The second appearance 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 appearance member 239. At this time, the second inner surface 2392 of the second appearance 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 that the second inner surface 2392 faces.

[0144] The second appearance member 239 is fixedly connected to the second swing arm 237. In this way, the second appearance member 239 moves synchronously with the movement of the second swing arm 237.

[0145] The second appearance member 239 and the second swing arm 237 are separately processed parts. In other words, the second appearance member 239 and the second swing arm 237 are processed separately and then assembled together. In this way, the assembly of the rotating shaft mechanism 23 is more convenient.

[0146] When the shaft mechanism 23 is in the unfolded state, please continue to refer to Fig. 9 The first appearance surface 2381, the middle appearance surface 2315 and the second appearance surface 2391 are arranged in parallel in the X-axis direction, and the first appearance surface 2381, the middle appearance surface 2315 and the second appearance surface 2391 are oriented in the same direction. In order to support the foldable electronic device 100 on a load-bearing surface (e.g., a desktop) in the unfolded state.

[0147] Exemplarily, when the hinge mechanism 23 is in the unfolded state, the first appearance surface 2381, the middle appearance surface 2315 and the second appearance surface 2391 are coplanar, thereby facilitating the foldable electronic device 100 to be stably supported on the bearing surface in the unfolded state.

[0148] When the rotating shaft mechanism 23 is in the folded state, please refer to Figure 8 The first appearance surface 2381 faces the second appearance surface 2391. Both of them are located on the side facing the middle appearance surface 2315. Specifically, the first appearance surface 2381 is perpendicular to the middle appearance surface 2315, and the second appearance surface 2391 is perpendicular to the middle appearance surface 2315.

[0149] See also Fig.10 and Fig.11 , Fig.10 9 is a partial exploded schematic diagram of the rotating shaft mechanism 23 shown in FIG. Fig.11 Based on Figure 8The schematic diagram of the cross-sectional structure of the rotating shaft mechanism 23 at the AA line is shown. Among them, "AA line" refers to the plane where the AA line and the arrows at both ends of the AA 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 component 238 and the base 231. A first matching portion 2383 is provided on the first appearance component 238. A first rotating matching portion 2316 is provided at one end of the base 231 in the X-axis direction. The first matching portion 2383 is rotatably connected to the first rotating matching portion 2316, so that the first appearance component 238 can be switched between an unfolded state and a folded state relative to the base 231 around the first rotation center line.

[0150] In this way, by setting the first matching part 2383 on the first appearance part 238 and setting the first rotating matching part 2316 on the base 231. The first matching part 2383 is rotatably connected with the first rotating matching part 2316, so as to realize the 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, and the gap between the first appearance surface 2381 and the intermediate appearance surface 2315 can be effectively controlled by only ensuring the matching accuracy of the first matching part 2383 and the first rotating matching part 2316, which is conducive 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, the problem of low assembly efficiency and increased production cost of the rotating shaft mechanism 23 caused by the need to repeatedly disassemble and assemble the rotating shaft mechanism 23 on the production line is avoided, which is conducive to improving assembly efficiency and reducing production costs. In addition, it is also conducive to realizing the uniformity of the spacing size at the same gap in different rotating shaft mechanisms.

[0151] In some embodiments, please refer to Fig.10 and Fig.11 , the first matching portion 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, clamping or screw connection. In other examples, the first arc rib 23831 and the first door panel 232 may also be a structural entity, and the two are an integrally formed part. The extension path of the first arc rib 23831 may be a major arc (that is, an arc with a central angle greater than 180°), or 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. Fig.10 and Fig.11 In the illustrated embodiment, the extension path of the first arc rib 23831 is a minor arc.

[0152] The first rotational matching portion 2316 is a first arc groove 23161, and the first arc rib 23831 is accommodated and matched with the first arc groove 23161. It can be understood that the center lines of the first arc groove 23161 and the first arc rib 23831 are both the first rotation center line mentioned above. In this way, the first rotation center line of the relative rotation between the first appearance component 238 and the base 231 is a virtual axis, which is conducive to reducing the volume of the rotating shaft mechanism 23 on the basis of increasing the rotation angle of the relative rotation between the first appearance component 238 and the base 231.

[0153] Please continue reading Fig.11 The first arc rib 23831 is fixed to one end of the first inner surface 2382 adjacent to the base 231. This helps to shorten the extension path of the first arc rib 23831 and further improve the compactness of the structure of the shaft mechanism 23. In other examples, the first arc rib 23831 can also be fixed to one end surface of the first appearance member 238 adjacent to the base 231.

[0154] In some embodiments, there are multiple first arc ribs 23831. Multiple first arc ribs 23831 are spaced apart in the Y-axis direction, and there are multiple first arc grooves 23161. Multiple first arc grooves 23161 are spaced apart in the Y-axis direction. One first arc groove 23161 corresponds to one first arc rib 23831. In this way, it is beneficial to improve the reliability of the connection between the first appearance part 238 and the base 231, so as to further improve the assembly stability between the first appearance part 238 and the base 231, and further improve the effective control of the gap between the first appearance surface 2381 and the middle appearance surface 2315.

[0155] Exemplarily, the plurality of first arc ribs 23831 are arranged at equal intervals in the Y-axis direction. Also exemplary, the plurality of first arc ribs 23831 are arranged at unequal intervals in the Y-axis direction.

[0156] Please continue reading Fig.11 For the outward-folding foldable electronic device 100, the first arc groove 23161 is arched away from the middle appearance surface 2315. In this way, the center line of the first arc groove 23161 can be located on the side of the first arc groove 23161 close to the middle 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 toward the side toward which the middle appearance surface 2315 faces, so as to realize the outward folding of the foldable electronic device 100.

[0157] In other examples, when the foldable electronic device 100 is an inward-folding electronic device, the first arc groove 23161 is arched close to the middle appearance surface 2315 .

[0158] It can be understood that the formation method of the first matching portion 2383 and the first rotating matching portion 2316 is not limited to this. In other examples, the first rotating matching portion 2316 can also be a first arc rib, and the first matching portion 2383 can also be a first arc groove, and the first arc rib accommodates and matches the first arc groove.

[0159] Please continue reading Fig.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 rotation center line. The first arc wall 23162 is located between the middle appearance surface 2315 and the second arc wall 23163. In other words, the first arc wall 23162 is located on the side of the second arc wall 23163 close to the middle appearance surface 2315.

[0160] Please continue reading Fig.11 , and combined with Fig.12 , Fig.12 Based on Fig.11 The exploded schematic diagram of the base 231 is shown. Fig.12 The viewing angle of the base 231 shown in (a) is Fig.12 The base 231 shown in (b) is viewed from a different perspective. The base 231 includes a base body 2318 and an intermediate appearance member 2317.

[0161] Please continue reading Fig.11 and Fig.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.

[0162] Please continue reading Fig.11 and Fig.12 The intermediate appearance part 2317 is located on the side of the base body 2318 away from the intermediate support surface 2311. The intermediate appearance part 2317 has the intermediate appearance surface 2315 and the intermediate inner surface 23171. The intermediate inner surface 23171 is opposite to the intermediate appearance surface 2315. The intermediate inner surface 23171 faces the base body 2318.

[0163] The intermediate appearance part 2317 and the base body 2318 are separate molded parts. In other words, the intermediate appearance part 2317 and the base body 2318 are processed separately. Since the intermediate appearance part 2317 has the intermediate appearance surface 2315, the intermediate appearance part 2317 has a relatively high requirement for appearance. By forming the intermediate appearance part 2317 and the base body 2318 as separate molded parts, it is convenient to use a process with relatively high processing accuracy to process the intermediate appearance part 2317, and it is convenient to use a process with relatively low processing accuracy to process the base body 2318, so as to simplify the processing and manufacturing process of the base 231.

[0164] The connection between the intermediate appearance part 2317 and the base body 2318 includes but is not limited to gluing, welding, clamping or screw connection. For example, please continue to refer to Fig.12 , a second screw hole 23188 is provided on the base body 2318. A second screw column 23177 is provided on the middle inner surface 23171. A second screw (not shown) is passed through the second screw hole 23188 and fixed on the second screw column 23177. Exemplarily, the second screw holes 23188 and the second screw columns 23177 are both one-to-one corresponding.

[0165] In other examples, the intermediate appearance component 2317 and the base body 2318 may also be an integrally formed component, that is, the base 231 is a structural entity.

[0166] On this basis, please continue to refer to Fig.11 , and combined with Fig.13 , Fig.13 Based on Fig.12 FIG. 2( b ) is an enlarged view of the circled portion of the base 231 at position M. The first arcuate wall 23162 is formed on the middle inner surface 23171 .

[0167] Please continue reading Fig.11 , and combined with Fig.14 , Fig.14 Based on Fig.12 FIG. 2 is an enlarged view of the portion of the base 231 circled at C shown in FIG. 23. The second arc-shaped wall 23163 is formed on the surface of the base body 2318 facing the middle appearance member 2317 .

[0168] As a result, by setting the first arc wall 23162 on the middle inner surface 23171 and setting the second arc wall 23163 on the base body 2318, it is beneficial to simplify the processing and manufacturing of the first arc groove 23161 on the one hand, 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, and realizing effective control of the gap between the first appearance surface 2381 and the middle appearance surface 2315, which is beneficial to ensure that the gap between the first appearance surface 2381 and the middle appearance surface 2315 reaches the set value, and avoids the need to repeatedly disassemble and assemble the shaft mechanism 23 on the production line, which brings about low assembly efficiency and increased production cost of the shaft mechanism 23, which is beneficial to improving assembly efficiency and reducing production cost.

[0169] In other embodiments, a portion of the first arcuate wall 23162 may be formed on the middle inner surface 23171, and the rest of the first arcuate wall 23162 may be formed on the base body 2318. Alternatively, in other embodiments, the entire first arc groove 23161 may be formed on the middle appearance component 2317, as long as at least a portion of the first arcuate wall 23162 is located on the middle appearance component 2317.

[0170] Please continue reading Fig.13 and Fig.14 , and combined with Fig.11 The middle inner surface 23171 is formed with a protrusion 23172 protruding toward the base body 2318. The shape of the protrusion 23172 includes but is not limited to a 1 / 4 cylinder or an elliptical cylinder, a 1 / 3 cylinder or an elliptical cylinder, a semi-cylindrical shape, a combination of a semi-cylindrical shape and a cube, or a special shape.

[0171] The connection between the protrusion 23172 and the middle appearance part 2317 includes, but is not limited to, gluing, welding, clamping or screw connection. In other examples, the protrusion 23172 and the middle appearance part 2317 can also be an integrally formed part.

[0172] The first arc wall 23162 is formed on the surface of the protrusion 23172 .

[0173] The base body 2318 is provided with a recessed groove 23181 for avoiding the protrusion 23172. The groove wall of the recessed groove 23181 facing the middle inner surface 23171 is a second arc wall 23163. In this way, the recessed groove 23181 and the protrusion 23172 can enclose the first arc groove 23161, which has a simple structure and is easy to process and manufacture. In addition, the provision of the protrusion 23172 is also conducive to improving the structural strength of the middle appearance part 2317.

[0174] In other embodiments, the protrusion 23172 may be disposed on the base body 2318, on which basis, the second arc-shaped wall 23163 is formed on the surface of the protrusion 23172; at the same time, a recessed groove 23181 is provided on the middle inner surface 23171, on which 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 protrusion 23172 and the recessed groove 23181 may cooperate to form the first arc-shaped groove 23161, which has a simple structure and is easy to manufacture.

[0175] Of course, the present application is not limited thereto, and in other embodiments, while the recessed groove 23181 is provided on the base body 2318, the protrusion 23172 is no longer provided on the middle appearance part 2317, but a groove is provided on the middle decoration at the same time, and in this case, the groove wall of the groove facing the base body 2318 is the first arc wall 23162. The groove and the recessed groove 23181 are used to simultaneously enclose the above-mentioned first arc groove 23161.

[0176] Please continue reading Fig.11 and Fig.13 The middle inner surface 23171 is formed with a first avoidance groove 23173 which is recessed near the middle appearance surface 2315. In the X-axis direction, the first avoidance groove 23173 is located at the end of the protrusion 23172 away from the first appearance member 238. The first arc-shaped wall 23162 is connected to the groove wall of the first avoidance groove 23173 which is close to the protrusion 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 rib 23831, thereby improving the reliability of the cooperation between the first appearance member 238 and the base 231 and preventing the occurrence of a stuck situation.

[0177] See also Fig.15 , Fig.15 Based on Figure 8The cross-sectional structure diagram of the rotating shaft mechanism 23 at the BB line is shown. In order to realize the rotatable connection between the first swing arm 236 and the base 231, a first pivoting portion 2364 is provided on the first swing arm 236. The end of the base 231 provided with the first rotating matching portion 2316 is provided with a first rotating portion 2312. The first rotating portion 2312 is spaced apart from the first rotating matching portion 2316 in the Y-axis direction. The first pivoting portion 2364 is rotatably connected to the first rotating 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 matching between the first pivoting portion 2364 and the first rotating portion 2312. In addition, the rotation center lines between the first swing arm 236 and the base 231 and between the first appearance component 238 and the base 231 are both the first rotation center lines, so that the synchronous rotation of the two can be achieved, preventing the first appearance component 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 component 238 relative to the base 231.

[0178] Further, in this embodiment, the first pivot portion 2364 is a first arcuate rib 23641. The connection method between the first arcuate rib 23641 and the first swing arm 236 includes, but is not limited to, welding, gluing, clamping or screw connection. In other examples, the first arcuate rib 23641 and the first swing arm 236 may also be a structural entity, and the two are an integrally formed part. The extension path of the first arcuate rib 23641 may be a major arc (that is, an arc with a central angle greater than 180°), or a minor arc (that is, an arc with a central angle less than 180°), or a semicircular arc (that is, an arc with a central angle equal to 180°), which is not specifically limited here. Fig.15 In the illustrated embodiment, the extension path of the first arc-shaped rib 23641 is a minor arc.

[0179] The first rotating portion 2312 is a first arcuate groove 23121. The first arcuate rib 23641 is accommodated and matched with the first arcuate groove 23121. It can be understood that the center lines of the first arcuate groove 23121 and the first arcuate rib 23641 are both the first rotation center line mentioned above. In this way, the first rotation center line of the relative rotation between the first swing arm 236 and the base 231 is a virtual axis, which is conducive to reducing the volume of the rotating shaft mechanism 23 on the basis of increasing the rotation angle of the relative rotation between the first swing arm 236 and the base 231.

[0180] Please continue reading Fig.15The first arcuate rib 23641 is fixed to one end of the first swing arm 236, which is adjacent to the base 231 and faces the first door panel 232. This helps to shorten the extension path of the first arcuate rib 23641 and further improve the compactness of the structure of the rotating shaft mechanism 23. In other examples, the first arcuate rib 23641 can also be fixed to one end surface of the first swing arm 236, which is adjacent to the base 231.

[0181] In some embodiments, a plurality of first arcuate ribs 23641 may be provided on the first swing arm 236. The plurality of first arcuate ribs 23641 are spaced apart in the Y-axis direction, and a plurality of first arcuate grooves 23121 are also provided on the base 231. The plurality of first arcuate grooves 23121 are spaced apart in the Y-axis direction. One first arcuate groove 23121 is matched with one first arcuate rib 23641. In this way, the reliability of the connection between the first swing arm 236 and the base 231 is improved.

[0182] In other examples, only one first arc-shaped rib 23641 may be provided on the first swing arm 236 .

[0183] Please continue reading Fig.15 For the outward-folding foldable electronic device 100, the first arc-shaped groove 23121 is arched away from the middle appearance surface 2315. In this way, the center line of the first arc-shaped groove 23121 can be located on the side of the first arc-shaped groove 23121 close to the middle 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 swing arm 236 to rotate toward the side toward which the middle appearance surface 2315 faces, so as to realize the outward folding of the foldable electronic device 100.

[0184] In other examples, when the foldable electronic device 100 is an outward-folding electronic device 100 , the first arc-shaped groove 23121 is arched close to the middle appearance surface 2315 .

[0185] It is understandable that the formation of the first pivot portion 2364 and the first rotating portion 2312 is not limited thereto. In other examples, the first rotating portion 2312 may also be the first arc-shaped rib 23641 , and the first pivot portion 2364 may also be the first arc-shaped groove 23121 .

[0186] Since the first swing arm 236 is located between the first door panel 232 and the first appearance member 238, in order to reduce the overall thickness of the first swing arm 236, the first door panel 232 and the first appearance member 238, please refer to Fig.16 , Fig.16 Based on Figure 8The first door panel 232 and the first swing arm 236 are shown in a schematic diagram of cooperation. The surface of the first door panel 232 facing the first appearance member 238 is recessed in a direction away from the first appearance member 238 (that is, close to the first sub-support surface 2321) to form a first receiving groove 2326. The first receiving groove 2326 extends to an end of the first door panel 232 close to the base 231 and the first receiving groove 2326 extends to an end of the first door panel 232 away from the base 231.

[0187] In other examples, the first receiving groove 2326 may also extend only to one end of the first door panel 232 close to the base 231 , so as to facilitate the cooperation between the first pivoting portion 2364 on the first swing arm 236 and the first rotating portion 2312 .

[0188] The first swing arm 236 is slidably fitted in the first receiving groove 2326. In this way, the overall thickness of the first swing arm 236, the first door plate 232 and the first appearance member 238 is reduced, thereby reducing the thickness of the hinge mechanism 23, and further reducing the thickness of the foldable electronic device 100.

[0189] In order to achieve the sliding fit between the first swing arm 236 and the first door panel 232, please continue to refer to Fig.16 , a first slide groove 2323 is provided on the first door panel 232. The first slide groove 2323 extends to one end of the first door panel 232 close to the base 231 and the first slide 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 slide groove 2323 includes but is not limited to a dovetail shape.

[0190] The first swing arm 236 is provided with a first slide rail 2365. The connection method of the first slide rail 2365 and the first swing arm 236 includes but is not limited to gluing, welding, clamping or screw connection. In other examples, the first slide rail 2365 and the first swing arm 236 can also be an integrally formed part.

[0191] The first slide rail 2365 is slidably matched with the first slide 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 by the cooperation between the first slide rail 2365 and the first slide groove 2323, which can improve the reliability of the sliding cooperation between the first swing arm 236 and the first door panel 232.

[0192] Specifically, first slide grooves 2323 are formed on both side groove walls of the first receiving groove 2326 in the Y-axis direction. First slide rails 2365 are respectively provided on both end surfaces of the first swing arm 236 in the Y-axis direction. One first slide rail 2365 cooperates with one first slide 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, which can further improve the reliability of the sliding cooperation between the first swing arm 236 and the first door panel 232.

[0193] It is understandable that, in other embodiments, the first slide groove 2323 may be disposed on the first swing arm 236 , and the first slide rail 2365 may be disposed on the first door panel 232 .

[0194] In order to achieve the sliding fit between the first appearance member 238 and the first door panel 232, please continue to refer to Fig.16 , and combined with Fig.17 and Fig.18 , Fig.17 Based on Figure 7 The schematic diagram of the assembly of the first appearance component 238, the first door panel 232 and the first swing arm 236 is shown. Fig.18 Based on Fig.17 The structure shown is an enlarged view of the circled portion at H. A first sliding groove 2322 is provided on the first door panel 232. The first sliding groove 2322 extends to an end of the first door panel 232 close to the base 231 and the first sliding groove 2322 extends to an end of the first door panel 232 away from the base 231. In other examples, the first sliding groove 2322 may also extend only to an end of the first door panel 232 close to the base 231.

[0195] A first sliding rail 23821 is provided on the first inner surface 2382. The connection method between the first sliding rail 23821 and the first appearance part 238 includes, but is not limited to, gluing, welding, clamping 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 and the first sliding groove 2322 are slidably matched. In this way, the relative sliding direction between the first appearance part 238 and the first door panel 232 can be guided and limited by the cooperation between the first sliding rail 23821 and the first sliding groove 2322, which can improve the reliability of the sliding cooperation between the first appearance part 238 and the first door panel 232.

[0196] Exemplarily, there are multiple first sliding grooves 2322. The first sliding grooves 2322 are spaced apart in the Y-axis direction. There are multiple first sliding rails 23821. Multiple first sliding rails 23821 are spaced apart in the Y-axis direction. One first sliding groove 2322 corresponds to one first sliding rail 23821. As a result, multiple first sliding grooves 2322 and multiple first sliding rails 23821 are matched one by one, so that the relative sliding direction between the first appearance part 238 and the first door panel 232 can be guided and limited at multiple positions in the Y-axis direction, which can further improve the reliability of the sliding fit between the first swing arm 236 and the first door panel 232.

[0197] For details, please continue to refer to Fig.18 In order to prevent the first sliding rail 23821 from falling out of 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 also provided on the groove side wall of the first sliding groove 2322. In this way, through the cooperation of the limiting flange 23822 and the limiting groove 23221, it is helpful to prevent the first sliding rail 23821 from falling out of the open opening on one side of the first sliding groove 2322 adjacent to the first inner surface 2382, thereby improving the reliability of the cooperation between the first sliding rail 23821 and the first sliding groove 2322.

[0198] Exemplarily, the connection method between the limiting flange 23822 and the first sliding rail 23821 includes but is not limited to gluing, welding, clamping or screw connection. In other examples, the limiting flange 23822 and the first sliding rail 23821 can also be an integrally formed part.

[0199] It is understandable that, in other embodiments, the first sliding groove 2322 may be disposed on the first appearance member 238 , and the first sliding rail 23821 may be disposed on the first door panel 232 .

[0200] For some examples, see Fig.19 , Fig.19 Based on Figure 7 The exploded view of the base 231, the third door panel 234 and the first door panel 232 in the rotating shaft mechanism 23 is shown. The rotating shaft mechanism 23 also includes a hinge structure 240. The third door panel 234 is rotatably connected to the first door panel 232 by means of the hinge structure 240, and the third door panel 234 is rotatably connected to the base 231 by means of the first hinge structure 240.

[0201] For details, please continue to refer to Fig.19The first hinge structure 240 includes a third arc rib 2401 and a fourth arc rib 2402. The third arc rib 2401 and the fourth arc rib 2402 are both fixed to a surface of the third door panel 234 that is away from the third sub-support surface 2341.

[0202] Specifically, the third arc rib 2401 is arched in a direction 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 a surface of a side of the third door panel 234 that is 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 a side of the first fixed end 24011 that is away from the base 231.

[0203] Please continue reading Fig.19 , the fourth arc rib 2402 is an arc-shaped rib that arches in a direction 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 a side surface of the third door panel 234 that is 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 a 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 (that is, 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.

[0204] 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 bonding, welding, clamping or screw connection.

[0205] See also Fig. 20 , Fig. 20 Based on Figure 8 The cross-sectional structure diagram of the rotating shaft mechanism 23 at KK is shown. A third arc groove 2324 is provided on the first door panel 232. The third arc rib 2401 is accommodated in the third arc groove 2324 and can make an arc motion in the third arc groove 2324.

[0206] On this basis, in order to improve the matching reliability between the third arc rib 2401 and the third arc groove 2324 and to prevent the third arc rib 2401 from slipping out of the third arc groove 2324, the first free end 24012 of the third arc rib 2401 is provided with a first limiting protrusion (not shown in the figure), and the third arc groove 2324 is provided with a second limiting protrusion (not shown in the figure) for matching with the first limiting protrusion.

[0207] See also Fig.21 , Fig.21 Based on Figure 8 The schematic diagram of the cross-sectional structure of the rotating shaft mechanism 23 at FF is shown. A fourth arc groove 2313 is provided on the base 231. The fourth arc rib 2402 is accommodated in the fourth arc groove 2313 and can make an arc motion in the fourth arc groove 2313. On this basis, in order to improve the matching reliability between the fourth arc rib 2402 and the fourth arc groove 2313 and to prevent the fourth arc rib 2402 from slipping out of the fourth arc groove 2313, a third limiting protrusion (not shown) is provided at the second free end 24022 of the fourth arc rib 2402, and a fourth limiting protrusion (not shown) for matching with the third limiting protrusion is provided in the fourth arc groove 2313.

[0208] In this way, when the first door panel 232 and the third door panel 234 rotate from the unfolded position to the folded position relative to the base 231, they also move in the direction close to the base 231. When the first door panel 232 and the third door panel 234 rotate from the folded position to the unfolded position relative to the base 231, they also move in the direction away from the base 231. As a result, when the rotating shaft mechanism 23 is folded from the unfolded state to the folded state, the size of the rotating shaft mechanism 23 is continuously reduced, and when the rotating shaft mechanism 23 is folded from the folded state to the unfolded state, the size of the rotating shaft mechanism 23 is continuously increased, so that the size of the rotating shaft mechanism 23 can change with the folding or unfolding of the rotating shaft mechanism 23, which can reduce the pulling of the bendable portion 13 during the folding process, thereby improving the reliability of the folding screen 10 and helping to extend the service life of the folding screen 10.

[0209] On the basis of the above embodiment, in order to realize the rotatable connection between the second appearance member 239 and the base 231, please refer to Fig.10 , a second matching portion 2393 is provided on the second appearance member 239. A second rotation matching portion 2319 is provided at the other end of the base 231 in the X-axis direction. The second matching portion 2393 is rotationally connected to the second rotation matching portion 2319, so that the second appearance member 239 can be switched between the unfolded state and the folded state relative to the base 231 around the second rotation center line.

[0210] In this way, by setting the second matching part 2393 on the second appearance part 239 and setting the second rotating matching part 2319 on the base 231. The second matching part 2393 is rotatably connected with the second rotating matching part 2319, so as to realize the direct hinge relationship between the second appearance part 239 and the base 231. In this way, on the one hand, the installation chain between the second appearance part 239 and the base 231 with the intermediate appearance surface 2315 is shortened, and the gap between the second appearance surface 2391 and the intermediate appearance surface 2315 can be effectively controlled by only ensuring the matching accuracy of the second matching part 2393 and the second rotating matching part 2319, which is conducive 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, the problem of low assembly efficiency and increased production cost of the rotating shaft mechanism 23 caused by the need to repeatedly disassemble and assemble the rotating shaft mechanism 23 on the production line is avoided, which is conducive to improving assembly efficiency and reducing production costs. In addition, it is also conducive to realizing the uniformity of the spacing size at the same gap in different rotating shaft mechanisms.

[0211] In some embodiments, please refer to Fig.10 , the second matching portion 2393 is a second arc rib 23931. The connection method between the second arc rib 23931 and the second door panel 233 includes but is not limited to welding, gluing, clamping or screw connection. In other examples, the second arc rib 23931 and the second door panel 233 may also be a structural entity, and the two are an integrally formed part. The extension path of the second arc rib can be a major arc (that is, an arc with a central angle greater than 180°), or 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. Fig.10 and Fig.11 In the illustrated embodiment, the extension path of the second arc-shaped rib is a minor arc.

[0212] The second rotational matching portion 2319 is a second circular arc groove 23191. The second circular arc rib 23931 accommodates and matches the second circular arc groove 23191. It can be understood that the center lines of the second circular arc groove 23191 and the second circular arc rib 23931 are both the second rotation center line mentioned above. In this way, the second rotation center line of relative rotation between the second appearance component 239 and the base 231 is a virtual axis, which is conducive to reducing the volume of the rotating shaft mechanism 23 on the basis of increasing the rotation angle of relative rotation between the second appearance component 239 and the base 231.

[0213] The second arc rib 23931 is fixed to one end of the second inner surface 2392 adjacent to the base 231. This helps to shorten the extension path of the second arc rib 23931 and further improve the compactness of the structure of the shaft mechanism 23. In other examples, the second arc rib 23931 can also be fixed to one end surface of the second appearance member 239 adjacent to the base 231.

[0214] In some embodiments, there are multiple second arc ribs 23931. Multiple second arc ribs 23931 are spaced apart in the Y-axis direction, and there are multiple second arc grooves 23191. Multiple second arc grooves 23191 are spaced apart in the Y-axis direction. One second arc groove 23191 corresponds to 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, so as 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 middle appearance surface 2315.

[0215] Exemplarily, the plurality of second arc ribs 23931 are arranged at equal intervals in the Y-axis direction. Also exemplary, the plurality of second arc ribs 23931 are arranged at unequal intervals in the Y-axis direction.

[0216] It is worth noting that the connection relationship between the second appearance member 239 and the second swing arm 237 can refer to the connection relationship between the first appearance member 238 and the first swing arm 236 in the above text. The connection relationship between the second appearance member 239 and the second door panel 233 can refer to the connection relationship between the first appearance member 238 and the first door panel 232 in the above text. For example, one of the second sliding groove and the second sliding rail can be provided on the second appearance member 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 above text. For example, a second pivoting portion can be provided on the second swing arm 237, and a second rotating portion corresponding to and cooperating with the second pivoting portion 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 slide rail and the second slide slot can be provided on the second swing arm 237, and the other of the second slide rail and the second slide slot can be provided on the second door panel, as well as the second receiving slot 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 dimensions, matching relationships, etc. of similar structures can be specifically referred to in the foregoing text, and will not be repeated in the following text.

[0217] In the description of this specification, specific features, structures, materials or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

[0218] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A foldable electronic device, characterized in that: include: A rotating shaft mechanism, the rotating shaft mechanism has an unfolded state and a folded state, and comprises: a base and a first appearance member; 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, wherein the second direction is perpendicular to the first direction; The first appearance member is located at one side of the base in the second direction, the first appearance member is provided with a first matching portion, the first matching portion is rotatably connected with the first rotating matching portion, the rotation center line of the first matching portion and the first rotating matching portion is a first rotating center line, and the first rotating center line is perpendicular to the first direction and the second direction; the first appearance member has a first appearance surface and a first inner surface, the first inner surface is arranged opposite to the first appearance surface, the first appearance surface and the middle appearance surface are both part of the appearance surface of the foldable electronic device, and in the unfolded state, the first appearance surface and the middle appearance surface are in the same direction; The hinge mechanism also includes a first door panel, which is located on the side facing the first inner surface, and a first sliding rail is provided on the first door panel, and a first sliding groove is provided on the first inner surface for slidingly cooperating with the first sliding rail; or, a first sliding groove is provided on the first door panel, and a first sliding rail is provided on the first inner surface for slidingly cooperating with the first sliding groove.

2. The foldable electronic device according to claim 1, characterized in that: The first rotational matching portion is a first circular arc groove, the first matching portion is a first circular arc rib, and the first circular arc rib is accommodated and matched with the first circular arc groove.

3. The foldable electronic device according to claim 2, characterized in that: The first arc groove is arched away from the middle appearance surface.

4. The foldable electronic device according to claim 2 or 3, characterized in that: The first arc rib is fixed to an end of the first inner surface close to the base.

5. The foldable electronic device according to claim 1, characterized in that: The base comprises: a base body; and An intermediate appearance part, the intermediate appearance part and the base body are separate processed parts and are relatively fixed, the intermediate appearance part has the intermediate appearance surface and the intermediate inner surface, the intermediate inner surface is opposite to 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 located on the side of the second arc wall close to the intermediate appearance surface, and at least a portion of the first arc wall is located on the intermediate appearance part.

6. The foldable electronic device according to claim 5, characterized in that: The first arc-shaped wall is formed on the middle inner surface, and the second arc-shaped wall is formed on a surface of the base body facing the middle appearance part.

7. The foldable electronic device according to claim 6, characterized in that: The middle inner surface is formed with a protrusion protruding toward the base body, the first arc-shaped wall is formed on the surface of the protrusion, the base body is provided with a recessed groove for avoiding the protrusion, and the groove wall of the recessed groove facing the middle inner surface is the second arc-shaped wall.

8. The foldable electronic device according to claim 7, characterized in that: The middle inner surface is formed with a first avoidance groove recessed close to the middle appearance surface. In the second direction, the first avoidance groove is located at an end of the protrusion away from the first appearance member, and the first arc-shaped wall is connected to a side groove wall of the first avoidance groove close to the protrusion.

9. The foldable electronic device according to claim 5, characterized in that: The first arc groove is formed on the intermediate appearance member.

10. The foldable electronic device according to claim 1, characterized in that: The end of the base provided with the first rotational matching portion is further provided with a first rotational portion, and the first rotational portion and the first rotational matching portion are spaced apart in the extending direction of the first rotational centerline; The rotating shaft mechanism includes a first swing arm, which is a separate processed part from the first appearance part and is fixedly connected. The first swing arm is located on the side facing the first inner surface. The first swing arm is provided with a first pivot part, which is rotatably connected to the first rotating part around the first rotation center line.

11. The foldable electronic device according to claim 10, characterized in that: The first rotating portion is a first arc-shaped groove, the first pivoting portion is a first arc-shaped rib, and the first arc-shaped rib is accommodated in and matched with the first arc-shaped groove.

12. The foldable electronic device according to claim 10 or 11, characterized in that: The first door panel is located on a side of the first swing arm away from the first appearance component; Wherein, a first slide groove is provided on the first door panel, and a first slide rail for slidingly cooperating with the first slide groove is provided on the first swing arm; or, a first slide rail is provided on the first door panel, and a first slide groove for slidingly cooperating with the first slide rail is provided on the first swing arm.

13. The foldable electronic device according to claim 10 or 11, characterized in that: The first door panel is located on a side of the first swing arm away from the first appearance part, and a surface of the first door panel facing the first appearance part is recessed in a direction away from the first appearance part to form a first receiving groove, which extends to an 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 foldable electronic device according to claim 1, characterized in that: The rotating shaft mechanism comprises: 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 third door panel and the base relative rotation 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 third door panel and the first door panel relative rotation is parallel to the first rotation center line.

15. The foldable electronic device according to claim 1, characterized in that: 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 at the other side of the base in the second direction, the second appearance member is provided with a second matching portion, the second matching portion is rotatably connected with the second rotating matching portion, wherein the rotation center of the second matching portion and the second rotating matching portion is a 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, which is a part of the appearance surface of the foldable electronic device. In the unfolded state, the second appearance surface is located on a side of the middle appearance surface away from the first appearance surface and is in the same direction as the middle appearance surface.

16. The foldable electronic device according to claim 1, characterized in that: In the unfolded state, the first exterior surface is coplanar with the intermediate exterior surface.

17. The foldable electronic device according to claim 1, characterized in that: 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.

18. The foldable electronic device according to claim 17, characterized in that: 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.

19. A rotating shaft mechanism, characterized in that: The rotating shaft mechanism has an unfolded state and a folded state, and 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 rotating portion, wherein the first rotating portion and the first rotational matching portion are spaced apart from each other in the 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; a first appearance member, the first appearance member is located at one side of the base in the second direction, the first appearance member is provided with a first matching portion, the first matching portion is rotatably connected to the first rotating matching portion around the first rotating center line, the first appearance member and the first swing arm are separate processed parts and are fixedly connected, the first appearance member has a first inner surface and a first appearance surface that are opposite to each other, the first inner surface is arranged opposite to the first appearance surface, the first inner surface faces the first swing arm, and in the unfolded state, the first appearance surface and the middle appearance surface face the same direction; The hinge mechanism also includes a first door panel, which is located on the side facing the first inner surface, and a first sliding rail is provided on the first door panel, and a first sliding groove is provided on the first inner surface for slidingly cooperating with the first sliding rail; or, a first sliding groove is provided on the first door panel, and a first sliding rail is provided on the first inner surface for slidingly cooperating with the first sliding groove.

20. The rotating shaft mechanism according to claim 19, characterized in that: The first rotational matching portion is a first circular arc groove, the first matching portion is a first circular arc rib, and the first circular arc rib is accommodated and matched with the first circular arc groove.

21. The rotating shaft mechanism according to claim 20, characterized in that: The first arc groove is arched away from the middle appearance surface.

22. The rotating shaft mechanism according to claim 20 or 21, characterized in that: The base comprises: a base body; and An intermediate appearance part, the intermediate appearance part and the base body are separate processed parts and are relatively fixed, the intermediate appearance part has the intermediate appearance surface and the intermediate inner surface, the intermediate inner surface is opposite to 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 located on the side of the second arc wall close to the intermediate appearance surface, and at least a portion of the first arc wall is located on the intermediate appearance part.

23. The rotating shaft mechanism according to claim 22, characterized in that: The first arc-shaped wall is formed on the middle inner surface, and the second arc-shaped wall is formed on a surface of the base body facing the middle appearance part.

24. The rotating shaft mechanism according to claim 23, characterized in that: The middle inner surface is formed with a protrusion protruding toward the base body, the first arc-shaped wall is formed on the surface of the protrusion, the base body is provided with a recessed groove for avoiding the protrusion, and the groove wall of the recessed groove facing the middle inner surface is the second arc-shaped wall.

25. The rotating shaft mechanism according to claim 24, characterized in that: The middle inner surface is formed with a first avoidance groove recessed close to the middle appearance surface. In the second direction, the first avoidance groove is located at an end of the protrusion away from the first appearance member, and the first arc-shaped wall is connected to a side groove wall of the first avoidance groove close to the protrusion.

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