Foldable electronic device

Abstract

The invention provides foldable electronic equipment, and relates to the technical field of electronic products. The foldable electronic equipment comprises a first shell and a rotating shaft mechanism, the rotating shaft mechanism comprises a base, a first door plate and a first hinge piece. The first door plate is provided with a first matching part and a first connecting part; the first hinge piece is fixedly connected with the first shell, and the first hinge piece is hinged to one end of the base; the first hinge piece is provided with a first connecting structure, and the first connecting structure is provided with a first arc surface and a first arc sliding surface; circle center lines of the first arc surface and the first arc sliding surface are first circle center lines, and the first arc surface and the first arc sliding surface are located on the same side of the first circle center lines and face opposite directions; the first arc surface and the first arc sliding surface are distributed in the extension direction of the first circle center line; when the foldable electronic equipment is switched between the unfolded state and the folded state, the first matching part slides along the first arc surface, and the first connecting part slides along the first arc sliding surface, so that the thinning of the rotating shaft mechanism is facilitated.

Description

Technical Field

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

[0002] With the development of foldable electronic devices, foldable electronic devices are becoming more and more popular among consumers. A foldable electronic device may include a folding screen and a supporting device. The supporting device may include a first housing, a second housing, and a rotating shaft mechanism connected between the two. The supporting device is used to support the folding screen. The first housing and the second housing are configured to be relatively rotatable through the rotating shaft mechanism, so as to realize the folding and unfolding of the foldable electronic device.

[0003] With the design requirement of the foldable electronic device becoming thinner and thinner, the rotating shaft mechanism also needs to become thinner accordingly. In the related art, the rotating shaft mechanism is relatively thick and needs to be further thinned. Summary of the Invention

[0004] The present application provides a foldable electronic device, which is beneficial to reducing the thickness of the rotating shaft mechanism and realizing the thinning of the foldable electronic device.

[0005] To achieve the above object, the present application adopts the following technical solutions:

[0006] In a first aspect, the present application provides a foldable electronic device, including: a first housing and a rotating shaft mechanism; the rotating shaft mechanism includes a base, a first door panel, and a first hinge member; the first door panel is provided with a first matching portion and a first connecting portion; the first hinge member is fixedly connected to the first housing, and the first hinge member is hinged to one side of the base; the first hinge member is provided with a first connecting structure corresponding to the first matching portion and the first connecting portion on the first door panel, the first connecting structure is provided with a first arc surface and a first arc sliding surface; the center lines of the first arc surface and the first arc sliding surface are both the first center line, the first arc surface and the first arc sliding surface are on the same side of the first center line and face opposite directions; the first arc surface and the first arc sliding surface are distributed in the extending direction of the first center line; when the foldable electronic device switches between the unfolded state and the folded state, the first matching portion slides along the first arc surface, and the first connecting portion slides along the first arc sliding surface.

[0007] For the foldable electronic device according to the present application, since the first connection structure is provided with a first arc surface and a first arc sliding surface, the center lines of both the first arc surface and the first arc sliding surface are the first center line, and the first arc surface and the first arc sliding surface are on the same side of the first center line. In this way, when the foldable electronic device switches between the unfolded state and the folded state, the first engaging portion slides along the first arc surface, and the first connecting portion slides along the first arc sliding surface, so that the relative rotation between the first door panel and the first hinge member with the first center line as the rotation center line can be realized. Moreover, since the orientations of the first arc surface and the first arc sliding surface are opposite, in this way, in the radial direction of the first arc surface, the first engaging portion and the first connecting portion can be limited between the first arc surface and the first arc sliding surface, or the first arc surface and the first arc sliding surface can be limited between the first engaging portion and the first connecting portion, and the reliability of the cooperation is high. And, since the first arc surface and the first arc sliding surface are distributed in the extending direction of the first center line. In this way, the first arc surface and the first arc sliding surface are offset in the radial direction of the first arc surface. Therefore, the reliability of the cooperation between the first engaging portion and the first arc surface and the reliability of the cooperation between the first connecting portion and the first arc sliding surface are not restricted by the size of the radial distance between the first arc surface and the first arc sliding surface, which is beneficial to ensuring that the first arc surface and the first arc sliding surface have a relatively large arc length to ensure the reliable cooperation between the first hinge member and the first door panel, and on this premise, it is beneficial to reduce the overall thickness of the first hinge member and the first connection structure by reducing the distance between the first arc surface and the first arc sliding surface in the radial direction of the first arc surface, and further beneficial to realizing the thinning of the rotating shaft mechanism.

[0008] In a possible implementation manner of the first aspect of the present application, the first connection structure is an opening formed on the first hinge member, and both the first arc surface and the first arc sliding surface are arranged in the opening, and the first engaging portion and the first connecting portion are located in the opening. Thus, the structure is compact, the volume of the rotating shaft mechanism is small, which is beneficial to further reducing the thickness of the rotating shaft mechanism and further realizing the thinning design of the rotating shaft mechanism.

[0009] In a possible implementation manner of the first aspect of the present application, the opening has a first side wall surface, a second side wall surface and a third side wall surface, the first side wall surface and the second side wall surface face each other in the extending direction of the first center line; the third side wall surface is connected between the end of the first side wall surface adjacent to the base and the end of the second side wall surface adjacent to the base; a boss extending towards the second side wall surface is provided on the first side wall surface, the first engaging portion is located between the boss and the third side wall surface, and the first arc surface is formed on the surface of the boss facing the first engaging portion. Thus, the structure is simple.

[0010] In a possible implementation manner of the first aspect of the present application, the first mating portion has a first arc mating surface. A limiting space is formed between the first mating portion and the first door panel on the side facing the first arc mating surface. The boss is located in the limiting space, and the first mating portion is in sliding fit with the first arc surface by means of the first arc mating surface. Thus, the structure is compact, the volume of the rotating shaft mechanism is small, which is beneficial to further reducing the thickness of the rotating shaft mechanism and further realizing the thin design of the rotating shaft mechanism.

[0011] In a possible implementation manner of the first aspect of the present application, the second side wall surface includes a first region and a second region. The second region is recessed away from the first side wall surface relative to the first region to define a recessed groove. The first arc sliding surface is formed on the groove side wall of the recessed groove; the first connecting portion is located in the recessed groove. Thus, the structure is compact, the volume of the rotating shaft mechanism is small, which is beneficial to further reducing the thickness of the rotating shaft mechanism and further realizing the thin design of the rotating shaft mechanism.

[0012] In a possible implementation manner of the first aspect of the present application, the first mating portion has a limiting portion. In the extending direction of the first center line, the limiting portion is limited between the first side wall surface and the first region. In this way, on the one hand, it is beneficial to limit the first mating portion and the first connecting portion as a whole at the opening, and on the other hand, it is also beneficial to limit the first door panel and the first hinge member in the extending direction of the first center line to prevent relative movement between the two in the extending direction of the first center line and improve the reliability of their cooperation. In a possible implementation manner of the first aspect of the present application, a connecting rib is provided at one end of the first arc mating surface adjacent to the first connecting portion. The connecting ribs are respectively connected to the first door panel and the first connecting portion. In this way, it is beneficial to improve the overall structural strength of the first mating portion, the first connecting portion and the first door panel.

[0013] In a possible implementation manner of the first aspect of the present application, the connecting rib and the first connecting portion as a whole are limited between the bottom wall of the recessed groove and the boss. In this way, on the one hand, it is beneficial to limit the first mating portion and the first connecting portion as a whole at the opening, and on the other hand, it is also beneficial to limit the first door panel and the first hinge member in the extending direction of the first center line to prevent relative movement between the two in the extending direction of the first center line and improve the reliability of their cooperation.

[0014] In a possible implementation manner of the first aspect of the present application, the opening extends to the end of the first hinge member away from the base. Thereby, it can prevent interference between the connecting rib, the first mating portion, and the first connecting portion as a whole during the process of switching between the unfolded state and the folded state and the first hinge member.

[0015] In a possible implementation manner of the first aspect of the present application, the surface of the first engaging portion facing away from the first arc surface is an arc-shaped structural surface, and the center line of the arc-shaped structural surface is the first center line. Thus, not only is the structure simple and convenient for processing and manufacturing, but also based on the fact that the arc-shaped structural surface takes the first center line as the center line, during the process of the foldable electronic device switching between the unfolded state and the folded state, the distance between the arc-shaped structural surface and the third side wall surface remains unchanged, thereby avoiding interference between the arc-shaped structural surface and the third side wall surface.

[0016] In a possible implementation manner of the first aspect of the present application, an avoidance surface is formed at one end of the arc-shaped structural surface away from the first door panel; in a plane perpendicular to the first center line, the tangent line of the arc-shaped structural surface at the end adjacent to the avoidance surface is the first tangent line, and the avoidance surface is located on the side of the first tangent line close to the first door panel. In this way, when the opening is a through hole, the avoidance surface can prevent interference between the first door panel and the first hinge member during the relative rotation between them and the first housing; when the opening is a blind hole, the avoidance surface can prevent interference between the first door panel and the first hinge member during the relative rotation between them and the bottom wall of the blind hole. At the same time, the setting of the avoidance surface can also reduce the overall thickness dimension of the first door panel and the first engaging portion, thereby being beneficial to further reducing the thickness of the rotating shaft mechanism.

[0017] In a possible implementation manner of the first aspect of the present application, the absolute value of the difference between the diameters of the first arc surface and the first arc sliding surface is greater than or equal to 0 and less than or equal to 2 mm. Thus, it is beneficial to further reduce the overall thickness of the first hinge member and the first connection structure, and further realize the thin design of the rotating shaft mechanism.

[0018] Specifically, the absolute value of the difference between the diameters of the first arc surface and the first arc sliding surface is greater than or equal to 0 and less than or equal to 1 mm.

[0019] In a possible implementation manner of the first aspect of the present application, the first engaging portion has a first arc engaging surface, the center line of the first arc engaging surface is the first center line, the diameter of the first arc engaging surface is equal to that of the first arc surface, and the first engaging portion is in sliding fit with the first arc surface by means of the first arc engaging surface. Since the first arc engaging surface and the first arc surface share the same center line and have equal diameters, the contact area between the first arc engaging surface and the first arc surface is large, and the reliability of their sliding fit is high.

[0020] In a possible implementation manner of the first aspect of the present application, the first connecting portion has a first arc-shaped mating surface. The center line of the first arc-shaped mating surface is the first center line. The diameters of the first arc-shaped mating surface and the first arc-shaped sliding surface are equal. The first connecting portion is in sliding fit with the first arc-shaped sliding surface by means of the first arc-shaped mating surface. Since the first arc-shaped mating surface and the first arc-shaped sliding surface share the same center line and have equal diameters, the contact area between the first arc-shaped mating surface and the first arc-shaped sliding surface is large, and the reliability of their sliding fit is high.

[0021] Specifically, the limiting portion protrudes from the first arc-shaped mating surface.

[0022] In a possible implementation manner of the first aspect of the present application, the orthographic projection of the entire first connecting portion on the first door panel is located on the first door panel, and the structure is compact.

[0023] Specifically, in the circumferential direction of the cylindrical surface where the first arc-shaped mating surface is located, the surface of the first connecting portion further includes a first plane and a second plane. The first connecting portion is fixed to the first door panel by means of the first plane. One end of the first plane is connected to one end of the second plane. The other end of the first plane and the other end of the second plane extend away from each other respectively, and the included angle between them is less than or equal to 90°. The first arc-shaped mating surface is connected between the other end of the first plane and the other end of the second plane. Thus, the structure is compact.

[0024] In a possible implementation manner of the first aspect of the present application, the foldable electronic device includes a second housing; the rotating shaft mechanism further includes a second door panel and a second hinge member; the second door panel is provided with a second mating portion and a second connecting portion; the second hinge member is fixedly connected to the second housing, and the second hinge member is hinged to the other side of the base; the second hinge member is provided with a second connecting structure corresponding to the second mating portion and the second connecting portion on the second door panel. The second connecting structure is provided with a second arc surface and a second arc-shaped sliding surface; the center lines of the second arc surface and the second arc-shaped sliding surface are both the second center line. The second arc surface and the second arc-shaped sliding surface are on the same side of the second center line and face in opposite directions; the second arc surface and the second arc-shaped sliding surface are distributed in the extending direction of the second center line, and the second center line is parallel to the first center line; when the foldable electronic device switches between the unfolded state and the folded state, the second mating portion slides along the second arc surface, and the second connecting portion slides along the second arc-shaped sliding surface.

[0025] For the foldable electronic device according to the present application, since the second connection structure is provided with a second arc surface and a second arc sliding surface, the center lines of the second arc surface and the second arc sliding surface are both the second center line, and the second arc surface and the second arc sliding surface are on the same side of the second center line. In this way, when the foldable electronic device switches between the unfolded state and the folded state, the second mating part slides along the second arc surface, and the second connection part slides along the second arc sliding surface, so that the relative rotation between the second door panel and the second hinge member with the second center line as the rotation center line can be realized. Moreover, since the orientations of the second arc surface and the second arc sliding surface are opposite, in the radial direction of the second arc surface, the second mating part and the second connection part can be limited between the second arc surface and the second arc sliding surface, or the second arc surface and the second arc sliding surface can be limited between the second mating part and the second connection part, and the reliability of the cooperation is high. And, since the second arc surface and the second arc sliding surface are distributed in the extending direction of the second center line. In this way, the second arc surface and the second arc sliding surface are offset in the radial direction of the second arc surface. Therefore, the reliability of the cooperation between the second mating part and the second arc surface and the reliability of the cooperation between the second connection part and the second arc sliding surface are not restricted by the size of the radial distance between the second arc surface and the second arc sliding surface, which is beneficial to ensuring that the second arc surface and the second arc sliding surface have a relatively large arc length to ensure the reliable cooperation between the second hinge member and the second door panel, and on this premise, it is beneficial to reduce the overall thickness of the second hinge member and the second connecting member by reducing the distance between the second arc surface and the second arc sliding surface in the radial direction of the second arc surface, and further beneficial to realizing the thinning of the rotating shaft mechanism.

[0026] In a possible implementation manner of the first aspect of the present application, the foldable electronic device includes a folding screen. The folding screen includes a first display part, a second display part, and a third display part. The third display part is connected between the first display part and the second display part. The first housing has a first support surface, and the second housing has a second support surface. The rotating shaft mechanism has a third support surface. The first display part is stacked and fixed on the first support surface. The second display part is stacked and fixed on the second support surface, and the third display part is supported on the third support surface. In the unfolded state, the first display part, the third display part, and the second display part are arranged in sequence, and the display surfaces of the first display part, the third display part, and the second display part are coplanar.

[0027] Furthermore, the foldable electronic device is an inward-foldable electronic device.

[0028] Second aspect, the present application provides a foldable electronic device, including: a rotating shaft mechanism and a first housing; the rotating shaft mechanism includes a base, a first door panel and a first hinge; the first door panel is provided with a first mating portion and a first connecting portion; the first hinge is fixedly connected to the first housing, and the first hinge is hinged to one side of the base; the first hinge is provided with a first connecting structure corresponding to the first mating portion and the first connecting portion on the first door panel, and the first connecting structure is provided with a first arc surface; the first housing is provided with a first fixing structure, and the first fixing structure is provided with a first arc surface; the center lines of the first arc surface and the first arc surface are both the first center line, and the first arc surface and the first arc surface are both on the same side of the first center line and face in opposite directions; on at least one switching path in the switching path for the foldable electronic device to switch between the unfolded state and the folded state, the first mating portion slides along the first arc surface, and the first connecting portion slides along the first arc surface.

[0029] In the foldable electronic device according to the present application, since the first housing and the first hinge are fixedly connected, by adopting the method that the first mating portion slides along the first arc surface and the first connecting portion slides along the first arc surface, not only can the relative rotation between the first door panel and the first hinge with the first center line as the rotation center line be realized. Moreover, since the orientations of the first arc surface and the first arc surface are opposite, in this way, in the radial direction of the first arc surface, the first mating portion and the first connecting portion can be limited between the first arc surface and the first arc surface, or the first arc surface and the first arc surface can be limited between the first mating portion and the first connecting portion, and the reliability of the cooperation is high. And setting the first arc surface on the first housing is beneficial to avoiding setting an arc surface for sliding cooperation with the first connecting portion on the first hinge, or reducing the arc length of the arc surface for sliding cooperation with the first connecting portion provided on the first hinge, thereby being beneficial to reducing the thickness of the first hinge, being beneficial to reducing the thickness of the rotating shaft mechanism, and further realizing the thin design of the rotating shaft mechanism.

[0030] In a possible implementation manner of the second aspect of the present application, the first arc surface is located on the side of the first arc surface away from the first center line and faces the first arc surface. Therefore, a first arc-shaped chute can be defined between the two. When the foldable electronic device switches between the unfolded state and the folded state, both the first connecting portion and the first mating portion are located in the first arc-shaped chute. In this way, the structure is simple and the reliability of the cooperation is higher. And, since the first arc surface is located on the side of the first arc surface away from the first center line, the diameter of the first arc surface is greater than the diameter of the first arc surface. When the first door panel rotates by the same angle, the movement path of the first connecting portion must be greater than the movement path of the first mating portion. At this time, for the solution of setting the first arc surface on the first housing, it is more beneficial to optimize the arc length of the first arc surface, improve the reliability of the cooperation between the first connecting portion and the first arc surface, and improve the reliability of the cooperation between the first hinge and the first door panel.

[0031] In a possible implementation manner of the second aspect of the present application, an arc-shaped slider is provided on the first door panel. The arc-shaped surfaces on the radial two sides of the arc-shaped slider are respectively a first arc mating surface and a first arc adapting surface. The first mating portion is the first arc mating surface, and the first connecting portion is the first arc adapting surface. The center lines of both the first arc mating surface and the first arc adapting surface are the first center line. Among them, the diameter of the first arc mating surface is equal to the diameter of the first arc surface, and the diameter of the first arc adapting surface is equal to the diameter of the first arc-shaped surface. In this way, the contact area between the first arc mating surface and the first arc surface is large, and the reliability of their sliding fit is high. Moreover, the contact area between the first arc adapting surface and the first arc-shaped surface is large, and the reliability of their sliding fit is high.

[0032] In a possible implementation manner of the second aspect of the present application, in the unfolded state, the overlapping width dimension between the first arc adapting surface and the first arc-shaped surface is greater than or equal to 0.3 mm and less than or equal to 2 mm. Thus, it is beneficial to further balance the reliability of the cooperation between the first door panel and the first hinge member and the thin design of the rotating shaft mechanism.

[0033] In a possible implementation manner of the second aspect of the present application, the first connecting structure is a through hole formed on the first hinge member. The first arc surface is formed on the hole wall of the through hole, and the first fixing structure is located inside the through hole. In this way, the structure is compact, which is beneficial to reducing the overall thickness of the rotating shaft mechanism and realizing the thin design of the rotating shaft mechanism.

[0034] In a possible implementation manner of the second aspect of the present application, a connecting rib is provided at one end of the arc-shaped slider along the extending direction of the first center line. The connecting rib is connected to the first door panel. Thus, it is beneficial to improve the connection strength between the arc-shaped slider and the first door panel.

[0035] In order to prevent the connecting rib from interfering with the relative movement between the first door panel and the first hinge member, an avoidance hole is provided on the first hinge member. The avoidance hole is located at one end of the through hole along the extending direction of the first center line and is communicated with the through hole. The connecting rib passes through the avoidance hole.

[0036] On this basis, in order to prevent interference between the connecting rib and the first hinge member, the avoidance hole extends to the end of the first hinge member away from the base.

[0037] In a possible implementation manner of the second aspect of the present application, the first arc-shaped surface and the first arc surface are distributed along the extending direction of the first center line. In this way, it is beneficial to further reduce the overall thickness of the first hinge member and the first connecting structure by reducing the distance between the first arc surface and the first arc-shaped surface in the radial direction of the first arc surface, and further realize the thin design of the rotating shaft mechanism.

[0038] In a possible implementation manner of the second aspect of the present application, on the entire switching path where the foldable electronic device switches between the unfolded state and the folded state, the first connecting portion only slides along the first arc surface. In this case, there is no need to additionally provide other arc surfaces on the first hinge member for sliding cooperation with the first connecting portion, which is beneficial to further reducing the thickness of the first hinge member and the thickness of the rotating shaft mechanism.

[0039] In a possible implementation manner of the second aspect of the present application, the first connecting structure is provided with a first arc sliding surface, and the first arc sliding surface and the first arc surface are co-cylindrical surfaces; the first arc sliding surface is located on the side of the first arc surface close to the base along the arc extension trajectory of the first arc surface itself; the first connecting portion is in sliding cooperation with the first arc sliding surface. Thus, it is beneficial to improve the reliability of the cooperation between the first hinge member and the first door panel.

[0040] In a possible implementation manner of the second aspect of the present application, the first arc sliding surface is formed on the hole wall of the through hole facing the first arc surface, and the first arc sliding surface faces the first arc surface. Thus, it is beneficial to improve the reliability of the cooperation between the first hinge member and the first door panel. In a possible implementation manner of the second aspect of the present application, when the first arc surface and the first arc surface are distributed in the extending direction of the first center line, the first arc sliding surface and the first arc surface are also distributed in the extending direction of the first center line.

[0041] On this basis, for the specific manner in which the first arc sliding surface and the first arc surface are distributed in the extending direction of the first center line, any one of the technical solutions in the above first aspect can be referred to, and details are not described herein again.

[0042] In a possible implementation manner of the second aspect of the present application, the first housing includes a first middle frame and a first connecting plate; the first middle frame has a first supporting surface, and the first middle frame also has a first side surface facing the rotating shaft mechanism. The first connecting plate is located on the side of the first middle frame close to the rotating shaft mechanism. The first connecting plate and the first supporting surface are at opposite ends of the first side surface. The first fixing structure is fixed on the surface of the first connecting plate facing the same direction as the first supporting surface and is located at one end of the first connecting plate close to the first side surface. In this way, the first door panel and the first hinge member can be blocked by the first connecting plate, so that the first connecting plate can be used to protect this part of the structure, and the appearance aesthetics can be improved, and the structural compactness is better.

[0043] In a possible implementation of the second aspect of the present application, the foldable electronic device includes a second housing; a second fixing structure is provided on the second housing, and the second fixing structure is provided with a second arc surface; the rotating shaft mechanism further includes a second door panel and a second hinge; the second door panel is provided with a second engaging portion and a second connecting portion; the second hinge is fixedly connected to the second housing, and the second hinge is hinged to the other side of the base; the second hinge is provided with a second connecting structure corresponding to the second engaging portion and the second connecting portion on the second door panel, and the second connecting structure is provided with a second arc surface; the center lines of the second arc surface and the second arc surface are both the second center line, the second arc surface and the second arc surface are both on the same side of the second center line and face in opposite directions, and the second center line is parallel to the first center line; on at least one switching path in the switching path for the foldable electronic device to switch between the unfolded state and the folded state, the second engaging portion slides along the second arc surface, and the second connecting portion slides along the second arc surface.

[0044] For the foldable electronic device according to the present application, since the second housing is fixedly connected to the second hinge, by adopting the method of the second engaging portion sliding along the second arc surface and the second connecting portion sliding along the second arc surface, not only can the relative rotation of the second door panel and the second hinge with the second center line as the rotation center line be realized. Moreover, since the second arc surface and the second arc surface face in opposite directions, in the radial direction of the second arc surface, the second engaging portion and the second connecting portion can be limited between the second arc surface and the second arc surface, or the second arc surface and the second arc surface can be limited between the second engaging portion and the second connecting portion, and the reliability of the cooperation is high. And by arranging the second arc surface on the second housing, it is beneficial to avoid arranging an arc surface for sliding cooperation with the second connecting portion on the second hinge, or reducing the arc length of the arc surface for sliding cooperation with the second connecting portion arranged on the second hinge, thereby being beneficial to reducing the thickness of the second hinge, being beneficial to reducing the thickness of the rotating shaft mechanism, and further realizing the thin design of the rotating shaft mechanism.

[0045] In a possible implementation of the second aspect of the present application, the foldable electronic device includes a folding screen. The folding screen includes a first display portion, a second display portion and a third display portion. The third display portion is connected between the first display portion and the second display portion. The first housing has a first support surface, and the second housing has a second support surface. The rotating shaft mechanism has a third support surface. The first display portion is stacked and fixed on the first support surface. The second display portion is stacked and fixed on the second support surface, and the third display portion is supported on the third support surface. In the unfolded state, the first display portion, the third display portion and the second display portion are arranged in sequence, and the display surfaces of the first display portion, the third display portion and the second display portion are coplanar.

[0046] Further, the foldable electronic device is an inward folding electronic device. Description of the Drawings

[0047] Figure 1 A perspective view of the foldable electronic device in the unfolded state provided by the embodiments of the present application;

[0048] Figure 2 According to Figure 1 An exploded view of the folding screen and the support device in the foldable electronic device shown;

[0049] Figure 3 According to Figure 1 A perspective view of the foldable electronic device in the folded state shown;

[0050] Figure 4 According to Figure 1 A cross-sectional view of the foldable electronic device along line A-A shown;

[0051] Figure 5 According to Figure 4 A schematic diagram of the first housing shown;

[0052] Figure 6a According to Figure 4 A schematic diagram of the rotating shaft mechanism shown;

[0053] Figure 6b According to Figure 6a An exploded view of the rotating shaft mechanism shown;

[0054] Figure 7 According to Figure 6a and Figure 6b A schematic cross-sectional view of the rotating shaft mechanism along line B-B shown;

[0055] Figure 8 A schematic diagram of the rotating shaft mechanism in the unfolded state provided by other embodiments of the present application;

[0056] Figure 9 According to Figure 8 A schematic diagram of the rotating shaft mechanism in the folded state shown;

[0057] Figure 10 A partial structural schematic diagram of the rotating shaft mechanism provided by still other embodiments of the present application;

[0058] Figure 11 According to Figure 10 An exploded view of the rotating shaft mechanism shown;

[0059] Figure 12 According to Figure 11 An enlarged view of the circled part at C of the structure shown;

[0060] Figure 13 According to Figure 10Enlarged view of the circled part at D in the shown structure;

[0061] Figure 14 Is a partial mating schematic diagram of the first door panel, the first mating part and the first connecting part shown in Figure 12 and Figure 13 ;

[0062] Figure 15 Is a side view of the structure shown in Figure 14 ;

[0063] Figure 16 Is a schematic diagram of the support device in the folded state provided according to some other embodiments of the present application;

[0064] Figure 17 Is a mating schematic diagram of the first door panel, the first middle frame and the first hinge in the cross-sectional structure of the support device shown in Figure 16 at the E-E line;

[0065] Figure 18 Is an enlarged view of the circled part at F in the structure shown in <s Figure 17 ;

[0066] Figure 19 Is a partial schematic diagram of the rotation shaft mechanism during the process of switching between the unfolded state and the folded state shown in Figure 18 ;

[0067] Figure 20 Is an exploded schematic diagram of the partial structure of the first door panel and the first hinge shown in Figure 17 ;

[0068] Figure 21 [[ID=...,...]]Is an assembly drawing of the partial structure of the first door panel and the first hinge shown in Figure 20 ;

[0069] Figure 22 Is an assembly cross-sectional view of the first middle frame, the first hinge and the first door panel according to some other embodiments provided by the present application;

[0070] Figure 23 Is an enlarged view of the circled part at H in the structure shown in Figure 22 ;

[0071] Figure 24 Is a partial schematic diagram of the foldable electronic device in the process of switching between the unfolded state and the folded state, where the structure shown in Figure 22 is located;

[0072] Figure 25 Is a partial schematic diagram of the foldable electronic device in the process of switching between the unfolded state and the folded state according to some other embodiments of the present application. Detailed Implementation Modes

[0073] In the embodiments of the present application, terms such as "exemplary" or "for example" are used to indicate examples, illustrations or explanations. Any embodiment or design solution described as "exemplary" or "for example" in the embodiments of the present application should not be construed as being more preferred or having more advantages than other embodiments or design solutions. Rather, the use of terms such as "exemplary" or "for example" is intended to present relevant concepts in a specific manner.

[0074] In the description of the embodiments of the present application, the term "and / or" refers to and encompasses any and all possible combinations of one or more of the associated listed items. The term "and / or" is a relational term describing the relationship between associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in the present application generally represents an "or" relationship between the preceding and following associated objects.

[0075] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, the terms "installed", "connected", and "coupled" should be understood in a broad sense. For example, "connected" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium.

[0076] In the description of the embodiments of the present application, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, such that a process, method, article or device including a series of elements not only includes those elements but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including one..." does not exclude the existence of additional identical elements in the process, method, article or device including that element. Without further limitation, an element defined by the statement "including one..." does not exclude the existence of additional identical elements in the process, method, article or device including that element.

[0077] In the description of the embodiments of the present application, the terms "coplanar", "collinear", "perpendicular", "parallel", and "equal" include the described situations and situations similar to the described situations, and the range of the similar situations is within an acceptable deviation range, where the acceptable deviation range is determined by those of ordinary skill in the art considering the measurements being discussed and the errors associated with the measurements of specific quantities (i.e., the limitations of the measurement system). For example, "collinear" all indicates approximate collinearity within a certain error range, and the error range can be an angular deviation within 5°, 10°, or 15° relative to absolute collinearity, or a spacing deviation not greater than 0.05 mm, 0.1 mm, 0.2 mm, 0.5 mm, or 1 mm relative to absolute collinearity. "Coplanar" all indicates approximate coplanarity within a certain error range, and the error range can be an angular deviation within 5°, 10°, or 15° relative to absolute coplanarity, or a step difference not greater than 0.05 mm, 0.1 mm, 0.2 mm, 0.5 mm, or 1 mm relative to absolute coplanarity. "Parallel" includes absolute parallelism and approximate parallelism, and the acceptable deviation range of approximate parallelism can be, for example, an angular deviation within 5°, 8°, or 10°. "Perpendicular" includes absolute perpendicularity and approximate perpendicularity, and the acceptable deviation range of approximate perpendicularity can also be, for example, a deviation within 5°, 8°, or 10°. "Equal" includes absolute equality and approximate equality, and the acceptable deviation range of approximate equality can be, for example, that the difference between the two equal ones is less than or equal to 5% of either one.

[0078] The specific structure of the foldable electronic device of the present application will be described in detail below.

[0079] The embodiments of the present application provide a foldable electronic device. The foldable electronic device can be various electronic devices that can change the unfolded or folded form of the foldable screen and itself. Specifically, the foldable electronic device can be a user equipment (UE) or a terminal device, etc. For example, the foldable electronic device can be a mobile phone, a portable android device (PAD), or a laptop computer. The foldable electronic device can also be a folding bracket.

[0080] Please refer to Figure 1 and Figure 2 , Figure 1 is a perspective view of the foldable electronic device 100 in the unfolded state provided by the embodiments of the present application, Figure 2 is an exploded view of the foldable screen 20 and the support device 10 in the foldable electronic device 100 shown in Figure 1 . In this embodiment, the foldable electronic device 100 is a mobile phone.

[0081] The foldable electronic device 100 is approximately in the shape of a rectangular flat plate in the unfolded state. For the convenience of describing the following embodiments, for the foldable electronic device 100 in the unfolded state, an XYZ coordinate system is established. The width direction of the foldable electronic device 100 is defined as the X-axis direction, the length direction of the foldable electronic device 100 is defined as the Y-axis direction, and the thickness direction of the foldable electronic device 100 is defined as the Z-axis direction. It can be understood that the coordinate system setting of the foldable electronic device 100 can be flexibly set according to actual needs and is not specifically limited herein. In some other embodiments, the shape of the foldable electronic device 100 can also be a square flat plate, a circular flat plate, an oval flat plate, etc.

[0082] The foldable electronic device 100 includes a folding screen 20 and a support device 10.

[0083] It can be understood that Figure 1 and Figure 2 only some components included in the foldable electronic device 100 are schematically shown, and the actual shape, actual size, actual position and actual structure of these components are not limited by Figure 1 and Figure 2 the limitations.

[0084] The folding screen 20 is used to display information such as images and videos. The folding screen 20 can switch between the unfolded state and the folded state. Specifically, please continue to refer to Figure 1 and Figure 2 , the folding screen 20 may include a first display portion 201, a second display portion 202, and a third display portion 203.

[0085] The third display portion 203 is connected between the first display portion 201 and the second display portion 202.

[0086] Please continue to refer to Figure 1 and Figure 2 , when the folding screen 20 is in the unfolded state, the first display portion 201, the third display portion 203, and the second display portion 202 are arranged in sequence along the X-axis direction, and their display surfaces are arranged in a coplanar manner. In some other embodiments, when the folding screen 20 is in the unfolded state, the first display portion 201, the third display portion 203, and the second display portion 202 may also be arranged in sequence along the Y-axis direction. When the folding screen 20 is in the unfolded state, large-screen display can be achieved to provide users with richer information and a better user experience.

[0087] At least the third display portion 203 of the folding screen 20 is a flexible screen structure. In this way, the third display portion 203 can be bent and deformed under the action of an external force, so that the folding screen 20 can be changed from Figure 1The unfolded state shown is folded to the folded state. The first display part 201 and the second display part 202 of the folding screen 20 can be flexible screen structures, can also be rigid screen structures, or can be partially flexible screen structures and partially rigid screen structures, and are not specifically limited herein.

[0088] Please refer to Figure 3 , Figure 3 is a perspective view of the foldable electronic device 100 shown in Figure 1 when it is in the folded state. The folding screen 20 in the foldable electronic device 100 is also in the folded state. When the folding screen 20 is in the folded state, the third display part 203 is bent, and the first display part 201 and the second display part 202 of the folding screen 20 are parallel and opposite.

[0089] When the folding screen 20 is in the folded state, please continue to refer to Figure 3 , the third display part 203 is folded into a water droplet shape. Specifically, the third display part 203 includes a first transition section 2032, a second transition section 2033, and an arc section 2031. The first transition section 2032 is connected between the arc section 2031 and the first display part 201. The second transition section 2033 is connected between the arc section 2031 and the second display part 202.

[0090] The distance between one end of the first transition section 2032 connected to the first display part 201 and one end of the second transition section 2033 connected to the second display part 202 is the first distance d1, and the distance between one end of the first transition section 2032 connected to the arc section 2031 and one end of the second transition section 2033 connected to the arc section 2031 is the second distance d2. The second distance d2 is greater than the first distance d1. In this way, the bending radius of the third display part 203 can be made larger, the bending of the third display part 203 when the folding screen 20 is folded is more natural, which is beneficial to reducing the creases of the folding screen 20 and can reduce the wear of the folding screen 20, making the folding screen 20 more durable. It can be understood that when the foldable electronic device 100 is in the folded state, according to actual needs, the third display part 203 can also be folded into other shapes, and the present application does not limit this.

[0091] Please continue to refer to Figure 3, when the folding screen 20 is in the folded state, the display surfaces of the first display portion 201 and the second display portion 202 of the folding screen 20 face each other, the folding screen 20 is invisible to the user, and the support device 10 is protected outside the folding screen 20 to prevent the folding screen 20 from being scratched by hard objects. This foldable electronic device 100 is an inward folding electronic device, and the size of the foldable electronic device 100 is reduced, which is convenient to carry. In other examples, the foldable electronic device 100 can also be an outward folding electronic device. For an outward folding electronic device. In the folded state, the support device 10 is located between the first display portion 201 and the second display portion 202, and the display surface of the first display portion 201 faces away from the display surface of the second display portion 202.

[0092] The support device 10 is used to carry the folding screen 20. Please continue to refer to Figure 2 and Figure 3 , the support device 10 includes a first housing 1, a second housing 2, and a rotating shaft mechanism 3.

[0093] It can be understood that Figure 2 and Figure 3 only some components included in the support device 10 are schematically shown, and the actual shape, actual size, actual position, and actual structure of these components are not limited by Figure 3 .

[0094] The first housing 1 has a first support surface M1. The first display portion 201 is laminated and fixed on the first support surface M1. Exemplarily, the connection relationship between the first support surface M1 and the first display portion 201 includes but is not limited to adhesion.

[0095] The second housing 2 has a second support surface M2. The second display portion 202 is laminated and fixed on the second support surface M2. Exemplarily, the connection relationship between the second support surface M2 and the second display portion 202 includes but is not limited to adhesion.

[0096] The rotating shaft mechanism 3 is connected between the first housing 1 and the second housing 2, and the first housing 1 and the second housing 2 are configured to be rotatably connected through the rotating shaft mechanism 3, so as to realize the relative folding or relative unfolding of the first housing 1 and the second housing 2, and further realize the folding or unfolding of the folding screen 20.

[0097] The rotating shaft mechanism 3 has a third support surface M3. The rotating shaft mechanism 3 can support the third display portion 203 of the folding screen 20 through the third support surface M3.

[0098] Specifically, please continue to refer to Figure 2 , in the unfolded state, the first support surface M1 of the first housing 1, the second support surface M2 of the second housing 2, and the third support surface M3 of the rotating shaft mechanism 3 are coplanar and have the same orientation. Thus, the folding screen 20 can be reliably supported to ensure the flatness of the folding screen 20.

[0099] In the folded state, please continue to refer to Figure 3 , the first housing 1 and the second housing 2 are stacked and spaced apart, and the first support surface M1 of the first housing 1 faces the second support surface M2 of the second housing 2, so as to facilitate hiding the folding screen 20 between the first housing 1 and the second housing 2, thereby realizing the protection of the folding screen 20.

[0100] Please refer to Figure 4 , Figure 4 is Figure 1 A cross-sectional view of the foldable electronic device 100 shown at line A-A. The first housing 1 may include a first middle frame 11 and a first back cover 12. The first middle frame 11 has a first support surface M1. The first back cover 12 is fixedly connected to the side of the first middle frame 11 away from the first display portion 201. A first accommodation cavity C1 is formed between the first middle frame 11 and the first back cover 12. The first accommodation cavity C1 can be used to accommodate electronic components such as a main board, a camera module, and a battery.

[0101] Similarly, the second housing 2 may include a second middle frame 21 and a second back cover 22. The second middle frame 21 has a second support surface M2. The second back cover 22 is fixedly connected to the side of the second middle frame 21 away from the second display portion 202. A second accommodation cavity C2 is formed between the second middle frame 21 and the second back cover 22. The second accommodation cavity C2 can be used to accommodate electronic components such as a secondary board, a speaker module, a dipole, and a battery.

[0102] In other examples, the second housing 2 may not include the second back cover 22. At this time, the foldable electronic device 100 may include a secondary display screen (not shown in the figure). The secondary display screen may be fixedly connected to the side of the second middle frame 21 away from the second display portion 202. A second accommodation cavity C2 is formed between the second middle frame 21 and the secondary display screen.

[0103] Please continue to refer to Figure 4 , and in combination with Figure 5 , Figure 5 is Figure 4 A schematic diagram of the first housing 1 shown in

[0104] The first middle plate 111 and the first back cover 12 are stacked and spaced apart. The first middle plate 111 has a first support surface M1. The first frame 112 is disposed around the edge of the first middle plate 111 for one week. And it is fixedly connected to the first middle plate 111 and the first back cover 12 to define the first accommodation cavity C1 with the first middle plate 111 and the first back cover 12.

[0105] The first housing 1 further includes two first extension plates 14 and a first connecting plate 13.

[0106] Two first extension plates 14 are located on one side of the first middle frame 11 close to the rotating shaft mechanism 3. The two first extension plates 14 are respectively connected to the two ends of the first middle frame 11 in the Y-axis direction, and the two first extension plates 14 are arranged oppositely in the Y-axis direction.

[0107] Please continue to refer to Figure 4 and Figure 5 , the first frame 112 has a first side surface 1121 facing the rotating shaft mechanism 3.

[0108] The first connecting plate 13 is located on one side of the first middle frame 11 close to the rotating shaft mechanism 3. The first connecting plate 13 is connected to one end of the first side surface 1121 far from the first supporting surface M1. The first connecting plate 13 is connected between the two first extension plates 14. The first connecting plate 13, the two first extension plates 14 and the first side surface 1121 define a fixing space C3, and a part of the rotating shaft mechanism 3 is located in the fixing space C3. In this way, not only is it convenient to fix the rotating shaft mechanism 3, but also the hiding effect of the rotating shaft mechanism 3 can be improved.

[0109] Specifically, in order to simplify the processing technology of the first housing 1, reduce the manufacturing cost, and at the same time improve the structural strength of the first housing 1, the first middle frame 11, the first extension plates 14 and the first connecting plate 13 are integrally formed parts. In other examples, the first middle frame 11 and the first extension plates 14, the first middle frame 11 and the first connecting plate 13, and the first connecting plate 13 and the first extension plates 14 can also be connected by means of gluing, welding, snap connection or screw connection.

[0110] Similarly, a fixing space can also be formed on the second housing 2 to facilitate accommodating another part of the rotating shaft mechanism 3. The structure of the second housing 2 can refer to the first housing 1 and will not be elaborated here.

[0111] Please refer to Figure 6a and Figure 6b , Figure 6a is a schematic diagram of the rotating shaft mechanism 3 shown in Figure 4 . The third supporting surface M3 on the rotating shaft mechanism 3 includes a first sub-supporting surface M31, a second sub-supporting surface M32 and a third sub-supporting surface M33.

[0112] Please continue to refer to Figure 6a and Figure 6b , Figure 6b is an exploded view of the rotating shaft mechanism 3 shown in Figure 6a . The rotating shaft mechanism 3 includes a base 31, a first door panel 32, a first hinge 34, a first main swing arm 3a, a first sub-swing arm 3c, a first door panel swing arm 38, a second door panel 33, a second hinge 35, a second main swing arm 3b, a second sub-swing arm 3d and a second door panel swing arm 39.

[0113] Figure 6a and Figure 6b Only some components of the rotating shaft mechanism 3 are shown schematically, and the actual shape, size, position and structure of these components are not affected by the present invention. Figure 6a and Figure 6b restrictions.

[0114] The base 31 can provide a mounting base for other components of the rotating shaft mechanism 3. The length direction of the base 31 is parallel to the Y-axis direction, the width direction is parallel to the X-axis direction, and the thickness direction is parallel to the Z-axis direction.

[0115] Please continue reading Figure 6b The base 31 includes a support plate 311 and a shaft cover 312 .

[0116] The support plate 311 is in the shape of a flat plate and has a second sub-support surface M32 . The second sub-support surface M32 is used to support the arc segment 2031 .

[0117] The shaft cover 312 is disposed on a side of the support plate 311 away from the second sub-support surface M32 .

[0118] See also Figure 6b The shaft cover 312 includes a bottom plate 3121 and side panels 3122. The side panels 3122 surround the outer edge of the bottom plate 3121, defining a storage space between the side panels 3122 and the bottom plate 3121. Some components of the hinge mechanism 3 can be accommodated within this storage space. This allows some components of the hinge mechanism 3 to be hidden inside the shaft cover 312, improving the aesthetics of the foldable electronic device 100.

[0119] The first hinge 34 is fixed to the first housing 1. Specifically, the first hinge 34 is fixed to the first middle frame 11. In other examples, the first hinge 34 can also be fixed to the first back cover 12. The connection between the first hinge 34 and the first housing 1 includes, but is not limited to, gluing, welding, clamping, or screwing.

[0120] The first hinge 34 is slidably and rotatably connected to one side of the base 31. Figure 6b As shown, the first hinge 34 is slidably and rotatably connected to one side of the base 31 via the first main swing arm 3a. Specifically, one end of the first main swing arm 3a slidably and rotatably connects to the base 31 and extends along the Y-axis relative to the rotation axis of the base 31. The first hinge 34 is hingedly connected to the other end of the first main swing arm 3a and extends along the Y-axis relative to the hinge axis of the first main swing arm 3a.

[0121] The first auxiliary swing arm 3c and the first hinge 34 are located on the same side of the base 31. The first auxiliary swing arm 3c is hinged to one side of the base 31. The hinge axis of the first auxiliary swing arm 3c relative to the base 31 extends along the Y-axis direction. The first auxiliary swing arm 3c and the first main swing arm 3a are arranged in the Y-axis direction. The hinge axis of the first main swing arm 3a relative to the base 31 and the hinge axis of the first auxiliary swing arm 3c relative to the base 31 are parallel. When the rotating shaft mechanism 3 switches between the unfolded state and the folded state, the first auxiliary swing arm 3c and the first hinge 34 can slide relative to each other in a direction perpendicular to the Y-axis.

[0122] The first door panel 32 has a first sub-support surface M31. The first door panel 32 fixes and supports the first transition section 2032 via the first sub-support surface M31. Exemplarily, the connection between the first door panel 32 and the first transition section 2032 includes, but is not limited to, gluing.

[0123] The first door panel 32 is slidably and rotatably connected to the first hinge 34. The first door panel 32 extends along the Y-axis relative to the rotation axis of the first hinge 34.

[0124] A first door panel swing arm 38 is slidably and rotatably connected to one side of the base 31. The first door panel swing arm 38 and the first hinge 34 are located on the same side of the base 31 and are spaced apart along the Y-axis. When the hinge mechanism switches between the unfolded and folded states, the first door panel 32 and the first door panel swing arm 38 can slide relative to each other in a direction perpendicular to the Y-axis.

[0125] In order to improve the reliable support of the first sub-support surface M31 to the first transition section 2032, the above-mentioned first hinge 34, first main swing arm 3a, first auxiliary swing arm 3c, and first door panel swing arm 38 are all located on the side of the first door panel 32 away from the first sub-support surface M31.

[0126] The second hinge 35 is fixed to the second housing 2. Specifically, the second hinge 35 is fixed to the second middle frame 21. In other examples, the second hinge 35 can also be fixed to the second back cover 22. The connection between the second hinge 35 and the second housing 2 includes, but is not limited to, gluing, welding, clamping, or screwing.

[0127] The second hinge 35 is slidably and rotatably connected to the other side of the base 31. The second hinge 35 is slidably and rotatably connected to the other side of the base 31 via the second main swing arm 3b. Specifically, one end of the second main swing arm 3b is slidably and rotatably connected to the base 31 and extends along the Y-axis relative to the rotation axis of the base 31. The second hinge 35 is hingedly connected to the other end of the second main swing arm 3b and extends along the Y-axis relative to the hinge axis of the second main swing arm 3b.

[0128] The second secondary swing arm 3d and the second hinge member 35 are located on the same side of the base 31. The second secondary swing arm 3d is hinged to the other side of the base 31. The hinge axis of the second secondary swing arm 3d relative to the base 31 extends in the Y-axis direction. The second secondary swing arm 3d and the second main swing arm 3b are arranged in the Y-axis direction. The hinge axis of the second main swing arm 3b relative to the base 31 and the hinge axis of the second secondary swing arm 3d relative to the base 31 are parallel. When the rotating shaft mechanism 3 switches between the unfolded state and the folded state, the second secondary swing arm 3d and the second hinge member 35 can slide relative to each other in a direction perpendicular to the Y-axis.

[0129] The second door panel 33 has a third sub-support surface M33. The second door panel 33 fixes and supports the above-mentioned second transition section 2033 through the third sub-support surface M33. Exemplarily, the connection method between the second door panel 33 and the second transition section 2033 includes but is not limited to gluing.

[0130] The second door panel 33 is slidably and rotatably connected to the second hinge member 35. The rotation axis of the second door panel 33 relative to the second hinge member 35 extends in the Y-axis direction.

[0131] The second door panel swing arm 39 is slidably and rotatably connected to the other side of the base 31. The second door panel swing arm 39 and the second hinge member 35 are located on the same side of the base 31 and are distributed in the Y-axis direction. When the rotating shaft mechanism switches between the unfolded state and the folded state, the second door panel 33 and the second door panel swing arm 39 can slide relative to each other in a direction perpendicular to the Y-axis.

[0132] In order to improve the reliable support of the third sub-support surface M33 for the second transition section 2033, the above-mentioned second hinge member 35, second main swing arm 3b, second secondary swing arm 3d, and second door panel swing arm 39 are all located on the side of the second door panel 33 facing away from the third sub-support surface M33.

[0133] As can be seen from the above description, the first hinge member 34, the first main swing arm 3a, the first door panel 32, the first door panel swing arm 38, the first auxiliary swing arm 3c, and the base 31 can form a linkage mechanism; similarly, the second hinge member 35, the second main swing arm 3b, the second door panel 33, the second door panel swing arm 39, the second auxiliary swing arm 3d, and the base 31 can also form a linkage mechanism. When the first housing 1 rotates under the action of an external force, since the first hinge member 34 is fixedly connected to the first housing 1, the force at the first housing 1 can be transmitted to the first hinge member 34. When the force acting on the first hinge member 34 causes it to rotate relative to the base 31, it will cause mechanical linkages among the first auxiliary swing arm 3c, the first main swing arm 3a, the first door panel swing arm 38, the first door panel 32, etc.; similarly, when the second housing 2 rotates under the action of an external force, since the second hinge member 35 is fixedly connected to the second housing 2, the force at the second housing 2 can be transmitted to the second hinge member 35. When the force acting on the second hinge member 35 causes it to rotate relative to the base 31, it will cause mechanical linkages among the second auxiliary swing arm 3d, the second main swing arm 3b, the second door panel swing arm 39, and the second door panel 33, etc., thereby realizing the folding and unfolding of the rotating shaft mechanism 3, and further realizing the folding and unfolding of the foldable electronic device 100.

[0134] Wherein, in the folded state, the first support surface M1 of the first housing 1 and the second support surface M2 of the second housing 2 are both perpendicularly arranged with respect to the second sub-support surface M32 of the base 31, and the angles between the first sub-support surface M31 of the first door panel 32 and the second sub-support surface M32 of the base 31 and between the third sub-support surface M33 of the second door panel 33 and the second sub-support surface M32 of the base 31 are both less than 90°. Thus, the folding screen 20 can be folded into a water droplet shape.

[0135] To achieve the hinge connection between the first door panel 32 and the first hinge member 34 and the hinge connection between the second door panel 33 and the second hinge member 35, please refer to Figure 7 , Figure 7 is a schematic cross-sectional view of the rotating shaft mechanism 3 at the B-B line according to Figure 6a and Figure 6b shown. Arc-shaped slider structures D1 are provided on the surfaces of the first door panel 32 facing the first hinge member 34 and the second door panel 33 facing the second hinge member 35. The center line of the arc-shaped slider structure D1 extends along the Y-axis direction. Arc-shaped chute structures D2 are provided on the first hinge member 34 and the second hinge member 35. The arc-shaped slider structure D1 on the first door panel 32 is slidably fitted in the arc-shaped chute structure D2 of the first hinge member 34, and the arc-shaped slider structure D1 on the second door panel 33 is slidably fitted in the arc-shaped chute structure D2 of the second hinge member 35.

[0136] In this example, the value range of the central angle α corresponding to the arc-shaped chute structure D2 and the arc-shaped slider structure D1 is between 40° and 180°. In this way, it is beneficial to ensure that the arc-shaped slider structure D1 and the arc-shaped chute structure D2 have a relatively large arc length. Therefore, during the process of the rotation shaft mechanism 3 switching between the unfolded state and the folded state, the arc-shaped chute structure D2 can provide good guidance for the arc-shaped slider structure D1, improving the reliability of the relative rotation between the door panel and the hinge member.

[0137] As the requirement for the thinning of electronic devices becomes increasingly strong, the requirement for the thinning of the rotation shaft mechanism 3 follows. In order to achieve the thinning of the rotation shaft mechanism 3, the first hinge member 34 needs to be thinned, and thus Figure 8 and Figure 9 the rotation shaft mechanism 3 shown can be obtained. Among them, Figure 8 is a schematic diagram of the rotation shaft mechanism 3 in the unfolded state according to some other embodiments of the present application, Figure 9 and Figure 8 is a schematic diagram of the rotation shaft mechanism 3 in the folded state according to

[0138] Although the thinning of the thickness of the hinge member (the first hinge member 34 and the second hinge member 35) in the Z direction is beneficial to the thinning of the rotation shaft mechanism 3. However, this will result in insufficient space for setting the arc-shaped chute structure D2 on the first hinge member 34 due to the too small thickness dimension, resulting in a reduction in the arc length of the arc-shaped chute structure D2. For example, the central angle α corresponding to the arc-shaped chute structure D2 is less than 40° or less than 30°. The reduction in the arc length of the arc-shaped chute structure D2 leads to insufficient limiting space for the arc-shaped chute structure D2 to limit the arc-shaped slider structure D1. During the process of the rotation shaft mechanism 3 switching between the unfolded state and the folded state, the arc-shaped chute structure D2 cannot provide good guidance for the arc-shaped slider structure D1, and the arc-shaped slider structure D1 cannot move along the preset trajectory, resulting in a reduction in the reliability of the sliding fit between the door panel and the hinge member, and further reducing the opening and closing reliability of the rotation shaft mechanism 3.

[0138] In order to be able to achieve the thinning of the rotation shaft mechanism 3 while not affecting the reliability of the cooperation between the door panel and the hinge member. The rotation shaft mechanism 3 of the embodiments of the present application will be described below with different examples (Example 1 and Example 2).

[0139] Example 1

[0140] Please refer to Figure 10 、 Figure 11 and Figure 12 , Figure 10 is a partial structural schematic diagram of the rotation shaft mechanism 3 provided by some other embodiments of the present application, Figure 11 and Figure 10 is an exploded schematic diagram of the rotation shaft mechanism 3 according to Figure 12 and Figure 11An enlarged view of the circled part at C in the shown structure. Among them, Figure 10 and Figure 11 The shown perspective is the perspective of the side of the rotating shaft mechanism 3 facing away from the third display part 203. The difference between this embodiment and the above embodiment is that:

[0141] A first matching part 321 and a first connecting part 322 are provided on the first door panel 32. The first hinge 34 is provided with a first connecting structure 37.

[0142] Please continue to refer to Figure 12 and, in combination with Figure 13 too, Figure 13 is an enlarged view of the circled part at D in the structure shown according to Figure 10 The first connecting structure 37 is provided with a first arc surface 371 and a first arc sliding surface 372.

[0143] The center lines of both the first arc surface 371 and the first arc sliding surface 372 are the first center line o1. The first center line o1 extends in the Y-axis direction. The first arc surface 371 and the first arc sliding surface 372 are on the same side of the first center line o1.

[0144] The first arc surface 371 and the first arc sliding surface 372 face in opposite directions. That is to say, one of the first arc surface 371 and the first arc sliding surface 372 faces the first center line o1, and the other of the first arc surface 371 and the first arc sliding surface 372 faces away from the first center line o1; specifically, when the first arc surface 371 faces the first center line o1, the first arc sliding surface 372 faces away from the first center line o1, and when the first arc surface 371 faces away from the first center line o1, the first arc sliding surface 372 faces the first center line o1. In Figure 12 and [[ID=12 In the shown specific example, the first arc surface 371 faces away from the first center line o1, and the first arc sliding surface 372 faces the first center line o1.

[0145] Both the first arc surface 371 and the first arc sliding surface 372 arch towards the side where the base 31 is located. In other examples, when the foldable electronic device 100 is an outward-foldable electronic device, the first arc surface 371 and the first arc sliding surface 372 arch towards the side away from the base 31.

[0146] The extension path of the first arc surface 371 can be a major arc (i.e., an arc with a central angle greater than 180°), a minor arc (i.e., an arc with a central angle less than 180°), or a semi - circular arc (i.e., an arc with a central angle equal to 180°), and no specific limitation is made here. Similarly, the extension path of the first arc sliding surface 372 can be a major arc (i.e., an arc with a central angle greater than 180°), a minor arc (i.e., an arc with a central angle less than 180°), or a semi - circular arc (i.e., an arc with a central angle equal to 180°), and no specific limitation is made here.

[0147] Please continue to refer to ​ and ​ When the foldable electronic device 100 switches between the unfolded state and the folded state, the first engaging portion 321 slides along the first arc surface 371, and the first connecting portion 322 slides along the first arc sliding surface 372. In this way, the relative rotation between the first door panel 32 and the first hinge member 34 with the first center line o1 as the rotation center line can be realized. Moreover, since the orientations of the first arc surface 371 and the first arc sliding surface 372 are opposite, in the radial direction of the first arc surface 371, the first engaging portion 321 and the first connecting portion 322 can be limited between the first arc surface 371 and the first arc sliding surface 372, or the first arc surface 371 and the first arc sliding surface 372 can be limited between the first engaging portion 321 and the first connecting portion 322, and the cooperation reliability is high.

[0148] Please continue to refer to ​ and ​ The first engaging portion 321 and the first connecting portion 322 are distributed in the Y - axis direction. The first arc surface 371 and the first arc sliding surface 372 are distributed in the Y - axis direction. In this way, the first arc surface 371 and the first arc sliding surface 372 are offset in the radial direction of the first arc surface 371. Therefore, the cooperation reliability between the first engaging portion 321 and the first arc surface 371, and the cooperation reliability between the first connecting portion 322 and the first arc sliding surface 372 are not restricted by the size of the radial distance between the first arc surface 371 and the first arc sliding surface 372. Thus, on the premise of ensuring that the first arc surface 371 and the first arc sliding surface 372 have a relatively large arc length to ensure the reliable cooperation between the first hinge member 34 and the first door panel 32, it is beneficial to reduce the size of the first hinge member 34 and the first connecting structure 37 as a whole in the Z - direction by reducing the distance between the first arc surface 371 and the first arc sliding surface 372 in the radial direction of the first arc surface 371, and further beneficial to realizing the thinning of the rotating shaft mechanism 3.

[0149] It should be noted that the statement "the first arc surface 371 and the first arc sliding surface 372 are distributed in the Y-axis direction" means that the first arc surface 371 and the first arc sliding surface 372 may be spaced apart or not spaced apart in the Y-axis direction. In the following text, similar descriptions should be understood in the same way and will not be elaborated further. In ​ and ​ In the specific example shown, the first arc surface 371 and the first arc sliding surface 372 are spaced apart in the Y-axis direction.

[0150] The diameter of the first arc surface 371 may be greater than the diameter of the first arc sliding surface 372, the diameter of the first arc surface 371 may also be less than the diameter of the first arc sliding surface 372, and the diameter of the first arc surface 371 may also be equal to the diameter of the first arc sliding surface 372. On this basis, in order to further reduce the size of the overall first hinge 34 and the first connection structure 37 in the Z direction and further achieve the thin design of the rotating shaft mechanism 3, the absolute value of the difference between the diameters of the first arc surface 371 and the first arc sliding surface 372 is greater than or equal to 0 and less than or equal to 2 mm. Exemplarily, the absolute value of the difference between the diameters of the first arc surface 371 and the first arc sliding surface 372 is 0, 0.1 mm, 0.2 mm, 0.3 mm, 0.4 mm, 0.5 mm, 0.6 mm, 0.7 mm, 0.8 mm, 0.9 mm, 1.1 mm, 1.2 mm, 1.3 mm, 1.4 mm, 1.5 mm, 1.6 mm, 1.7 mm, 1.8 mm, or 1.9 mm. In other examples, the absolute value of the difference between the diameters of the first arc surface 371 and the first arc sliding surface 372 may also be greater than 2 mm. For example, the absolute value is 2.5 mm or 3 mm.

[0151] Please continue to refer to ​ and ​ , the first connection structure 37 is an opening formed on the first hinge 34. In ​ and ​ In the specific example shown, the opening is a through hole that penetrates from one end of the first hinge 34 facing the first door panel 32 to the other end of the first hinge 34 facing away from the first door panel 32. In other examples, the opening may also be a blind hole that recesses from one end of the first hinge 34 facing the first door panel 32 towards the surface facing away from the first door panel 32. As long as it is ensured that one end of the opening faces the first door panel 32.

[0152] Both the first arc surface 371 and the first arc sliding surface 372 are provided in the opening. It should be noted that the statement "the first arc surface 371 is provided in the opening" means that the first arc surface 371 is completely located within the opening or may be partially located within the opening. Similarly, the statement "the first arc sliding surface 372 is provided in the opening" means that the first arc sliding surface 372 is completely located within the opening or may be partially located within the opening.

[0153] The first engaging portion 321 protrudes from the first door panel 32. Specifically, the first engaging portion 321 is disposed on the surface of the first door panel 32 facing away from the first sub-support surface M31 and protrudes from this surface.

[0154] The first engaging portion 321 and the first door panel 32 may be an integral structure, that is, the first engaging portion 321 and the first door panel 32 may be an integrally formed part. In this way, it is beneficial to improve the connection strength between the first engaging portion 321 and the first door panel 32, simplify the processing technology, and reduce the manufacturing cost. In other examples, the connection manner between the first engaging portion 321 and the first door panel 32 may also be adhesive bonding, welding, snap connection or screw connection.

[0155] The first connecting portion 322 protrudes from the first door panel 32. Specifically, the first connecting portion 322 is disposed on the surface of the first door panel 32 facing away from the first sub-support surface M31 and protrudes from this surface.

[0156] The first connecting portion 322 and the first door panel 32 may be an integral structure, that is, the first connecting portion 322 and the first door panel 32 may be an integrally formed part. In this way, it is beneficial to improve the connection strength between the first connecting portion 322 and the first door panel 32, simplify the processing technology, and reduce the manufacturing cost. In other examples, the connection manner between the first connecting portion 322 and the first door panel 32 may also be adhesive bonding, welding, snap connection or screw connection.

[0157] On this basis, the first connecting portion 322 and the first engaging portion 321 may be connected. Specifically, the first connecting portion 322 and the first engaging portion 321 may be an integral structure, that is, the first connecting portion 322 and the first engaging portion 321 may be an integrally formed part. In this way, it is beneficial to improve the connection strength between the first connecting portion 322 and the first engaging portion 321, simplify the processing technology, and reduce the manufacturing cost. In other examples, the connection manner between the first connecting portion 322 and the first engaging portion 321 may also be adhesive bonding, welding, snap connection or screw connection. Or, in other examples, the first connecting portion 322 and the first engaging portion 321 may also be spaced apart.

[0158] The first engaging portion 321 can extend into the opening to cooperate with the first arc surface 371, and the first connecting portion 322 can extend into the opening to cooperate with the first arc sliding surface 372. In this way, the structure is compact and the volume of the rotating shaft mechanism 3 is small.

[0159] Of course, the present application is not limited thereto. In other examples, the first engaging portion 321 and the first connecting portion 322 may also be an opening structure provided on the first door panel 32. The first connecting structure 37 is a structure protruding from the first hinge member 34. The first arc surface 371 and the first arc sliding surface 372 on the first connecting structure 37 extend into the interior of the opening structure.

[0160] Please continue to refer to ​ and ​ , the opening has a first side wall surface 373, a second side wall surface 374 and a third side wall surface 375.

[0161] In the extending direction of the first center line o1, the first side wall surface 373 and the second side wall surface 374 face each other. The third side wall surface 375 is connected between one end of the first side wall surface 373 adjacent to the base 31 and one end of the second side wall surface 374 adjacent to the base 31.

[0162] One end of the first side wall surface 373 away from the third side wall surface 375 is provided with a boss 376 extending towards the second side wall surface 374. The first engaging portion 321 is located between the boss 376 and the third side wall surface 375. The surface of the boss 376 facing the first engaging portion 321 is formed with a first arc surface 371. Thus, the structure is simple.

[0163] Please continue to refer to ​ and ​ , the first engaging portion 321 has a first arc engaging surface 3211. The extending path of the first arc engaging surface 3211 may be a major arc (i.e., an arc with a central angle greater than 180°), a minor arc (i.e., an arc with a central angle less than 180°), or a semi-circular arc (i.e., an arc with a central angle equal to 180°), and no specific limitation is made here. In ​ and ​ the illustrated embodiment, the extending path of the first arc engaging surface 3211 is a minor arc.

[0164] The center line of the first arc engaging surface 3211 is the first center line o1. The diameters of the first arc engaging surface 3211 and the first arc surface 371 are equal. When the foldable electronic device 100 switches between the unfolded state and the folded state, the first engaging portion 321 slides along the first arc surface 371 by means of the first arc engaging surface 3211. Since the first arc engaging surface 3211 and the first arc surface 371 are co-centric and have equal diameters, the contact area between the first arc engaging surface 3211 and the first arc surface 371 is large, and the reliability of their sliding fit is high.

[0165] Please continue to refer to ​ and ​, a first engaging portion 321 forms a limiting space C5 between the first door panel 32 and the side where the first arc engaging surface 3211 faces, and the boss 376 is located in the limiting space C5. Thus, the whole structure is simple and compact, which is beneficial to reducing the thickness of the rotating shaft mechanism 3 and realizing the thinning of the rotating shaft mechanism 3.

[0166] It can be understood that in other examples, the above-mentioned first arc engaging surface 3211 may not be provided on the first engaging portion 321.

[0167] Please continue to refer to ​ and ​ , the second side wall surface 374 includes a first region 3741 and a second region 3742. The second region 3742 is recessed relative to the first region 3741 in a direction away from the first side wall surface 373 to define a recessed groove 377. The first connecting portion 322 is located in the recessed groove 377. The first arc sliding surface 372 is formed on the groove side wall of the recessed groove 377. Thus, the structure is simple and compact, which is beneficial to reducing the thickness of the rotating shaft mechanism 3 and realizing the thinning of the rotating shaft mechanism 3.

[0168] Please continue to refer to ​ and ​ , the first connecting portion 322 has a first arc adapting surface 3221. The extending path of the first arc adapting surface 322 may be a major arc (i.e., an arc with a central angle greater than 180°), a minor arc (i.e., an arc with a central angle less than 180°), or a semi-circular arc (i.e., an arc with a central angle equal to 180°), which is not specifically limited herein. In ​ and ​ In the illustrated embodiment, the extending path of the first arc adapting surface 3221 is a minor arc.

[0169] The center line of the first arc adapting surface 3221 is the first center line o1. The first arc adapting surface 3221 and the first arc sliding surface 372 have the same diameter. When the foldable electronic device 100 switches between the unfolded state and the folded state, the first connecting portion 322 slides along the first arc sliding surface 372 by means of the first arc adapting surface 3221. Since the first arc adapting surface 3221 and the first arc sliding surface 372 are co-centric and have the same diameter, the contact area between the first arc adapting surface 3221 and the first arc sliding surface 372 is large, and the reliability of their sliding fit is high.

[0170] It can be understood that in other examples, the above-mentioned first arc adapting surface 3221 may not be provided on the first connecting portion 322.

[0171] Please continue to refer to ​ and ​, the first mating portion 321 has a limiting portion 3212 protruding from the first arc-shaped mating surface 3221. In the extending direction of the first center line o1, the limiting portion 3212 is limited between the first side wall surface 373 and the first region 3741. In this way, on the one hand, it is beneficial to limit the first mating portion 321 and the first connecting portion 322 as a whole at the opening, and on the other hand, it is also beneficial to limit the first door panel 32 and the first hinge 34 in the Y-axis direction to prevent relative movement between the two in the Y-axis direction and improve the reliability of their cooperation.

[0172] In other examples, the first mating portion 321 may not be provided with the limiting portion 3212. Exemplarily, the surface of the first mating portion 321 facing away from the first arc surface 371 is flush with the first arc-shaped mating surface 3221 and is co-cylindrical.

[0173] Please continue to refer to ​ and ​ , at one end of the first arc-shaped mating surface 3211 adjacent to the first connecting portion 322, there is a connecting rib 3217. The connecting rib 3217 is connected to the first door panel 32 and the first connecting portion 322 respectively. In this way, it is beneficial to improve the overall structural strength of the first mating portion 321, the first connecting portion 322, and the first door panel 32.

[0174] On this basis, the connecting rib 3217 and the first connecting portion 322 as a whole are limited between the bottom wall of the recessed groove 377 and the boss 376. In this way, on the one hand, it is beneficial to limit the first mating portion 321 and the first connecting portion 322 as a whole at the opening, and on the other hand, it is also beneficial to limit the first door panel 32 and the first hinge 34 in the Y-axis direction to prevent relative movement between the two in the Y-axis direction and improve the reliability of their cooperation. In addition, cooperating with the above-mentioned limiting portion 3212 can achieve the purpose of double limiting, and the limiting effect is better.

[0175] On this basis, in order to prevent interference between the connecting rib 3217, the first mating portion 321, and the first connecting portion 322 as a whole and the first hinge 34 during the process of switching between the unfolded state and the folded state, the opening extends to the end of the first hinge 34 away from the base 31.

[0176] In some embodiments, please refer to ​ and ​ , ​ is a partial mating schematic diagram of the first door panel 32, the first mating portion 321, and the first connecting portion 322 shown in ​ and ​ ; ​ is according to ​Side view of the structure shown. The surface of the first engaging portion 321 (i.e., the limiting portion 3212) facing away from the first arc surface 371 is an arc-shaped structural surface 3215. The center line of this arc-shaped structural surface 3215 is the first center line o1. Thus, the first engaging portion 321 is formed into an arc shape. It is not only simple in structure and convenient for processing and manufacturing, but also based on the fact that the arc-shaped structural surface 3215 takes the first center line o1 as the center line. During the process of the foldable electronic device 100 switching between the unfolded state and the folded state, the distance between the arc-shaped structural surface 3215 and the third side wall surface 375 remains unchanged, thereby avoiding interference between the arc-shaped structural surface 3215 and the third side wall surface 375.

[0177] Of course, the present application is not limited to this. In other examples, the arc-shaped structural surface 3215 may not be provided on the first engaging portion 321. Exemplarily, the first engaging portion 321 is formed into a semi-cylindrical shape, a 1 / 4 semi-cylindrical shape, or a 1 / 3 semi-cylindrical shape, as long as it is ensured that the first engaging portion 321 has the first arc engaging surface 3211.

[0178] On this basis, please continue to refer to ​ and ​ , an avoidance surface 3216 is formed at one end of the arc-shaped structural surface 3215 away from the first door panel 32. Exemplarily, the avoidance surface 3216 includes but is not limited to a plane or a curved surface.

[0179] In the plane perpendicular to the first center line o1, the tangent line of the arc-shaped structural surface 3215 at the end adjacent to the avoidance surface 3216 is the first tangent line L1. The avoidance surface 3216 is located on the side of the first tangent line L1 close to the first door panel 32. In this way, when the opening is a through hole, the avoidance surface 3216 can prevent interference between the first door panel 32 and the first hinge member 34 during the relative rotation between them and the first housing 1; when the opening is a blind hole, the avoidance surface 3216 can prevent interference between the first door panel 32 and the first hinge member 34 during the relative rotation between them and the bottom wall of the blind hole. At the same time, the setting of the avoidance surface 3216 can also reduce the size of the overall first door panel 32 and the first engaging portion 321 in the Z direction, which is beneficial to further reducing the thickness of the rotating shaft mechanism 3.

[0180] In other examples, the above-mentioned avoidance surface 3216 may not be provided on the first engaging portion 321.

[0181] Please continue to refer to ​ and ​, in the circumferential direction of the cylindrical surface where the first arc-shaped mating surface 3221 is located, the surface of the first connecting portion 322 further includes a first plane 3213 and a second plane 3214. The first connecting portion 322 is fixed to the first door panel 32 by means of the first plane 3213. One end of the first plane 3213 is connected to one end of the second plane 3214. The other end of the first plane 3213 and the other end of the second plane 3214 extend in directions away from each other, and the included angle between them is less than or equal to 90°. The first arc-shaped mating surface 3221 is connected between the other end of the first plane 3213 and the other end of the second plane 3214. In this way, the orthographic projection of the entire first connecting portion 322 on the plane where the first door panel 32 is located is located on the first door panel 32, and the structure is compact.

[0182] In ​ and ​ In the specific example shown, the first connecting portion 322 is generally fan-shaped. In other examples, the first connecting portion 322 can also be in the shape of a cylinder or a cube.

[0183] Example Two

[0184] Please refer to ​ , ​ and ​ , ​ is a schematic diagram of the support device 10 in a folded state provided according to some other embodiments of the present application. ​ is according to ​ A schematic diagram of the cooperation of the first door panel 32, the first middle frame 11, and the first hinge 34 in the cross-sectional structure of the support device 10 shown at the E-E line. ​ is according to ​ An enlarged view of the circled part at F of the structure shown. The difference between this embodiment and the above embodiment is that:

[0185] The first door panel 32 is provided with a first mating portion 321 and a first connecting portion 322.

[0186] The first hinge 34 is provided with a first connecting structure 37. The first connecting structure 37 is provided with a first arc surface 371. The center line of the first arc surface 371 is the first center line o1. The first center line o1 extends in the Y-axis direction. The extension path of the first arc surface 371 can be a major arc (i.e., an arc with a central angle greater than 180°), or a minor arc (i.e., an arc with a central angle less than 180°), or a semi-circular arc (i.e., an arc with a central angle equal to 180°), and no specific limitation is made here.

[0187] The first housing 1 is provided with a first fixing structure 131. The first fixing structure 131 is provided with a first arc surface 1311. The center line of the first arc surface 1311 is also the first center line o1. The extension path of the first arc surface 1311 can be a major arc (i.e., an arc with a central angle greater than 180°), a minor arc (i.e., an arc with a central angle less than 180°), or a semi-circular arc (i.e., an arc with a central angle equal to 180°), which is not specifically limited herein.

[0188] Both the first arc surface 1311 and the first circular arc surface 371 are on the same side of the first center line o1.

[0189] The first arc surface 1311 and the first circular arc surface 371 face in opposite directions. That is, one of the first arc surface 1311 and the first circular arc surface 371 faces the first center line o1, and the other faces away from the first center line o1; specifically, when the first circular arc surface 371 faces the first center line o1, the first arc surface 1311 faces away from the first center line o1, and when the first circular arc surface 371 faces away from the first center line o1, the first arc surface 1311 faces the first center line o1. In ​ In the specific example shown, the first arc surface 1311 faces the first center line o1, and the first circular arc surface 371 faces away from the first center line o1.

[0190] Both the first arc surface 1311 and the first circular arc surface 371 arch towards the side where the base 31 is located. In other examples, when the foldable electronic device 100 is an outward-foldable electronic device, the first arc surface 1311 and the first circular arc surface 371 arch towards the side away from the base 31.

[0191] Please continue to refer to ​ and ​, on at least one switching path in the switching path for the foldable electronic device 100 to switch between the unfolded state and the folded state, the first engaging portion 321 slides along the first arc surface 371, and the first connecting portion 322 slides along the first arc surface 1311. Specifically, since the first housing 1 is fixedly connected to the first hinge member 34, by adopting the way that the first engaging portion 321 slides along the first arc surface 371 and the first connecting portion 322 slides along the first arc surface 1311, not only can the relative rotation between the first door panel 32 and the first hinge member 34 be realized with the first center line o1 as the rotation center line. Moreover, since the orientations of the first arc surface 371 and the first arc surface 1311 are opposite, in this way, in the radial direction of the first arc surface 371, the first engaging portion 321 and the first connecting portion 322 can be limited between the first arc surface 371 and the first arc surface 1311, or the first arc surface 371 and the first arc surface 1311 can be limited between the first engaging portion 321 and the first connecting portion 322, and the cooperation reliability is high. And by arranging the first arc surface 1311 on the first housing 1, it is beneficial to avoid arranging an arc surface for sliding cooperation with the first connecting portion 322 on the first hinge member 34, or reducing the arc length of the arc surface arranged on the first hinge member 34 for sliding cooperation with the first connecting portion 322, thereby being beneficial to reducing the thickness of the first hinge member 34, being beneficial to reducing the size of the rotating shaft mechanism 3 in the Z direction, and further realizing the thin design of the rotating shaft mechanism 3. And, since the spatial layout of the first housing 1 is relatively large, the arc length dimension of the first arc surface 1311 arranged on the first housing 1 can be set relatively large, which is beneficial to improving the cooperation reliability between the first hinge member 34 and the first door panel 32.

[0192] Please continue to refer to ​ , ​ is a partial schematic diagram during the process of the rotating shaft mechanism shown in ​ switching between the unfolded state and the folded state. As shown in (a) in ​ , in the unfolded state, the first connecting portion 322 cooperates with the first arc surface 1311. As shown in (b) in ​ , when switching from the unfolded state to the folded state, the first connecting portion 322 slides along the first arc surface 1311. As shown in (c) in ​ , in the folded state, the first connecting portion 322 cooperates with the first arc surface 1311. In this way, on the entire switching path for the foldable electronic device 100 to switch between the unfolded state and the folded state, the first connecting portion 322 only slides along the first arc surface 1311. In this case, there is no need to additionally arrange an arc surface for sliding cooperation with the first connecting portion 322 on the first hinge member 34, which is beneficial to further reducing the thickness of the first hinge member 34 and further realizing the thin design of the rotating shaft mechanism 3.

[0193] Please continue to refer to ​ and ​ The first arc surface 1311 is located on the side of the first circular arc surface 371 away from the first center line o1. The first circular arc surface 371 faces the first arc surface 1311. Thus, the first circular arc surface 371 and the first arc surface 1311 are at least partially facing each other in the radial direction. Therefore, a first arc-shaped chute 3411 can be defined therebetween. When the foldable electronic device 100 switches between the unfolded state and the folded state, both the first connecting portion 322 and the first mating portion 321 are located within the first arc-shaped chute 3411. In this way, the structure is simple and the reliability of the cooperation is higher.

[0194] Moreover, since the first arc surface 1311 is located on the side of the first circular arc surface 371 away from the first center line o1, the diameter of the first arc surface 1311 is greater than the diameter of the first circular arc surface 371. When the first door panel 32 rotates by the same angle, the movement path of the first connecting portion 322 is necessarily greater than the movement path of the first mating portion 321. At this time, it is more beneficial to optimize the arc length of the first arc surface 1311, improve the reliability of the cooperation between the first connecting portion 322 and the first arc surface 1311, and improve the reliability of the cooperation between the first hinge 34 and the first door panel 32.

[0195] Please continue to refer to ​ and ​ The first fixing structure 131 is fixed to the surface of the first connecting plate 13 that faces the same direction as the first support surface M1. The first fixing structure 131 is located at one end of the first connecting plate 13 close to the first side surface 1121. In this way, the first door panel 32 and the first hinge 34 can be blocked by the first connecting plate 13, so that the first connecting plate 13 can be used to protect this part of the structure, and the appearance aesthetics can also be improved, and the structural compactness is better.

[0196] Please continue to refer to ​ and ​ The first fixing structure 131 is a protruding structure protruding from the first connecting plate 13. Specifically, the first fixing structure 131 and the first connecting plate 13 can be an integral structure, that is, the first fixing structure 131 and the first connecting plate 13 can be an integrally formed part. In this way, it is beneficial to improve the connection strength between the first fixing structure 131 and the first connecting plate 13, simplify the processing technology, and reduce the manufacturing cost. In other examples, the connection method between the first fixing structure 131 and the first connecting plate 13 can also be adhesive bonding, welding, snap connection or screw connection.

[0197] The first connection structure 37 is a through hole 37a formed in the first hinge 34. The through hole 37a penetrates from one end of the first hinge 34 facing the first door panel 32 to the other end of the first hinge 34 facing away from the first door panel 32.

[0198] The first arc surface 371 is formed on the hole wall of the through hole 37a. The first fixing structure 131 is located within the through hole 37a. In this way, the structure is compact, which is conducive to reducing the size of the overall rotating shaft mechanism 3 in the Z direction and realizing the thin design of the rotating shaft mechanism 3.

[0199] Please continue to refer to ​ and ​ , an arc-shaped slider 320 is provided on the surface of the first door panel 32 facing away from the first sub-support surface M31. One end of the arc-shaped slider 320 along its extending trajectory is connected to the first door panel 32. The arc-shaped surfaces on the radial two sides of the arc-shaped slider 320 are respectively a first arc mating surface 3211 and a first arc adapting surface 3221. The center lines of the first arc mating surface 3211 and the first arc adapting surface 3221 are both the first center line o1.

[0200] The first arc mating surface 3211 is the first mating portion 321, and the first arc mating surface 3211 has the same diameter as the first arc surface 371. In this way, the contact area between the first arc mating surface and the first arc surface 371 is large, and the reliability of their sliding fit is high.

[0201] The first arc adapting surface 3221 is the first connecting portion 322, and the first arc adapting surface 3221 has the same diameter as the first arc surface 1311. In this way, the contact area between the first arc adapting surface 3221 and the first arc surface 1311 is large, and the reliability of their sliding fit is high.

[0202] In some embodiments, in the unfolded state, the overlapping width dimension between the first arc adapting surface 3221 and the first arc surface 1311 is greater than or equal to 0.3 mm and less than or equal to 2 mm. Specifically, when the overlapping width dimension between the first arc adapting surface 3221 and the first arc surface 1311 is set too small, it is likely to cause the problem of unreliable cooperation between the first door panel 32 and the first hinge member 34; on the other hand, when the overlapping width dimension between the first arc adapting surface 3221 and the first arc surface 1311 is set too large, the arc length of the first arc adapting surface 3221 and the first arc surface 1311 will inevitably increase, which will lead to an increase in the overall size of the rotating shaft mechanism 3 and is not conducive to the thin design of the rotating shaft mechanism 3. Based on this, in the unfolded state, the overlapping width dimension between the first arc adapting surface 3221 and the first arc surface 1311 is greater than or equal to 0.4 mm and less than or equal to 2 mm, which is conducive to further taking into account the reliability of the cooperation between the first door panel 32 and the first hinge member 34 and the thin design of the rotating shaft mechanism 3.

[0203] Exemplarily, the overlapping width dimension between the first arc-shaped mating surface 3221 and the first arc-shaped surface 1311 is 0.4 mm, 0.5 mm, 0.6 mm, 0.7 mm, 0.8 mm, 0.9 mm, 1.0 mm, 1.1 mm, 1.2 mm, 1.3 mm, 1.4 mm, 1.5 mm, 1.6 mm, 1.7 mm, 1.8 mm, or 1.9 mm.

[0204] It should be noted that when the first arc-shaped mating surface 3221 overlaps with the first arc-shaped surface 1311, a coincident area will be formed between the first arc-shaped mating surface 3221 and the first arc-shaped surface 1311. This coincident area is also arc-shaped. When measuring the overlapping width dimension, the overlapping width can refer to the arc length of this coincident area or the chord length of this coincident area.

[0205] Please refer to ​ , ​ For ​ the partial structure of the first door panel 32 and the exploded view of the first hinge 34 shown in. One end of the arc-shaped slider 320 in the Y-axis direction is provided with a connecting rib 3217. The connecting rib 3217 is connected to the first door panel 32. Thus, it is beneficial to improve the connection strength between the arc-shaped slider 320 and the first door panel 32.

[0206] Exemplarily, the connecting rib 3217, the first door panel 32 and the arc-shaped slider 320 can be integrally formed parts. Thus, the processing technology can be simplified and the manufacturing cost can be reduced. In other examples, the connecting rib 3217 and the first door panel 32, as well as the connecting rib 3217 and the arc-shaped slider 320, can also be connected by means such as gluing, welding, snap connection or screw connection.

[0207] Please continue to refer to ​ , and in combination with ​ , ​ For ​ the assembly drawing of the partial structure of the first door panel 32 and the first hinge 34 shown in. In order to prevent the connecting rib 3217 from interfering with the relative movement between the first door panel 32 and the first hinge 34, an avoidance hole 378 is provided on the first hinge 34. The avoidance hole 378 is located at one end of the through hole 37a in the Y-axis direction and is communicated with the through hole 37a. The connecting rib 3217 passes through the avoidance hole 378.

[0208] On this basis, in order to prevent interference between the connecting rib 3217 and the first hinge 34, the avoidance hole 378 extends to the end of the first hinge 34 away from the base 31.

[0209] Please refer to ​ , ​Assembly cross-sectional view of the first middle frame 11, the first hinge member 34, and the first door panel 32 for some other embodiments provided by this application. ​ As shown in ​ An enlarged view of the circled part at H of the structure shown. The difference between this embodiment and the ​ embodiment shown above is that: a first arc sliding surface 372 is provided on the first hinge member 34. In ​ the specific example shown, the first arc sliding surface 372 is formed on the hole wall of the through hole 37a facing the first arc surface 371.

[0210] The first arc sliding surface 372 and the first arc surface 1311 are co-cylindrical. That is to say, the center line of the first arc sliding surface 372 is the first center line o1. The diameters of the first arc sliding surface 372 and the first arc surface 1311 are equal. The first arc sliding surface 372 is located on the side of the first arc surface 1311 close to the base 31 on the arc extension trajectory of the first arc surface 1311 itself. The first arc sliding surface 372 faces the first arc surface 371, that is to say, the first arc sliding surface 372 and the first arc surface 371 are at least partially radially opposed. In this way, the first arc sliding surface 372 and the first arc surface 371 can define a second arc chute 3412. In this way, the overall arc length dimension of the first arc surface 1311 and the first arc sliding surface 372 is larger. When the foldable electronic device 100 switches between the unfolded state and the folded state, the first connecting portion 322 slides along the first arc sliding surface 372, and the arc slider 320 slides and fits in the second arc chute 3412, which not only has a simple structure but also higher cooperation reliability.

[0211] Exemplarily, the central angle corresponding to the first arc sliding surface 372 is less than or equal to 40°. For example, the central angle corresponding to the first arc sliding surface 372 is 30°, 25°, 20°, 10°, or 5°.

[0212] Exemplarily, the arc length of the first arc sliding surface 372 is less than or equal to 1 mm. For example, the arc length of the first arc sliding surface 372 is 0.8 mm, 0.7 mm, 0.6 mm, 0.5 mm, 0.4 mm, or 0.3 mm.

[0213] In some specific examples, please refer to ​ , ​ As shown in ​ is a partial schematic diagram during the process of the foldable electronic device 100 shown in the structure switching between the unfolded state and the folded state. As shown in ​ (a) in, in the unfolded state, the first connecting portion 322 cooperates with the first arc sliding surface 372, and the first connecting portion 322 cooperates with the first arc surface 1311. As shown in ​As shown in (b) herein, when the foldable electronic device 100 switches from the unfolded state to the folded state, the first connecting portion 322 slides along the first arc sliding surface 372 and the first arc surface 1311. When the foldable electronic device 100 switches to the folded state, as ​ shown in (c) herein, the first connecting portion 322 cooperates with the first arc sliding surface 372, and the first connecting portion 322 cooperates with the first arc surface 1311.

[0214] It can be understood that in other examples, the first connecting portion 322, the first arc sliding surface 372, and the first arc surface 1311 may also have other cooperation forms during the process of switching between the unfolded state and the folded state. Specifically, please refer to ​ , ​ which is a partial schematic diagram of the foldable electronic device 100 according to other embodiments of the present application during the process of switching between the unfolded state and the folded state. As ​ shown in (a) herein, in the unfolded state, the first connecting portion 322 cooperates with the first arc sliding surface 372, and the first connecting portion 322 does not cooperate with the first arc surface 1311. As ​ shown in (b) herein, when the foldable electronic device 100 switches from the unfolded state to the folded state to a preset angle, the first connecting portion 322 slides along the first arc sliding surface 372 and the first arc surface 1311 simultaneously. When the foldable electronic device 100 switches to the folded state, as ​ shown in (c) herein, the first connecting portion 322 cooperates with the first arc sliding surface 372, and the first connecting portion 322 cooperates with the first arc surface 1311.

[0215] It should be noted that in any of the embodiments shown in the above ​ of Example 2, the description is made by taking the first arc surface 371 facing the first arc surface 1311 as an example. In other examples, the first arc surface 371 and the first arc surface 1311 may also be offset in the radial direction, that is, the first arc surface 371 and the first arc surface 1311 are distributed in the Y-axis direction. In this way, the cooperation reliability between the first engaging portion 321 and the first arc surface 371, and the cooperation reliability between the first connecting portion 322 and the first arc surface 1311 are not limited by the radial distance between the first arc surface 371 and the first arc surface 1311, so as to be beneficial to ensuring that the first arc surface 371 and the first arc surface 1311 have a relatively large arc length to ensure the reliable cooperation between the first hinge 34 and the first door panel 32, and on the premise of this, it is beneficial to further reduce the overall thickness of the first hinge 34 and the first connecting structure by reducing the distance between the first arc surface 371 and the first arc surface 1311 in the radial direction of the first arc surface 371, and further realize the thinning of the rotating shaft mechanism 3.

[0216] On this basis, when the first hinge 34 is further provided with a first arcuate sliding surface 372, the first arcuate sliding surface 372 and the first curved surface 1311 are distributed along the length direction of the Y axis. In this case, the specific structure and connection relationship of the first door panel 32, the first hinge 34, the first connecting portion 322, the first matching portion 321, and the first connecting structure 37 can be referred to in the above-mentioned Example 1 and will not be repeated here.

[0217] Based on any one of the above examples 1 and 2, in some embodiments, a second matching portion and a second connecting portion are provided on the second door panel 33 .

[0218] The second hinge 35 is provided with a second connecting structure. The second connecting structure includes a second arc surface and a second arc sliding surface. The center lines of the second arc surface and the second arc sliding surface are both the second center line. The second center line extends along the Y-axis and is arranged parallel to the first center line o1.

[0219] The second arc surface and the second arc sliding surface are on the same side of the second center line of the circle. The second arc surface and the second arc sliding surface are oriented in opposite directions. When the foldable electronic device 100 switches between the unfolded state and the folded state, the second matching portion slides along the second arc surface, and the second connecting portion slides along the second arc sliding surface. In this way, relative rotation between the second door panel 33 and the second hinge 35 with the second center line as the rotation center line can be achieved. Moreover, since the second arc surface and the second arc sliding surface are oriented in opposite directions, in the radial direction of the second arc surface, the second matching portion and the second connecting portion can be limited between the second arc surface and the second arc sliding surface, or the second arc surface and the second arc sliding surface can be limited between the second matching portion and the second connecting portion, and the reliability of the matching is high.

[0220] On this basis, the second matching portion and the second connecting portion are distributed in the Y-axis direction. The second arc surface and the second arc sliding surface are distributed in the Y-axis direction. In this way, the second arc surface and the second arc sliding surface are staggered in the radial direction of the second arc surface. Therefore, the matching reliability of the second matching portion and the second arc surface, and the matching reliability of the second connecting portion and the second arc sliding surface will not be limited by the radial distance between the second arc surface and the second arc sliding surface. This is beneficial to ensure that the second arc surface and the second arc surface have a relatively large arc length to ensure that the second hinge 35 and the second door panel 33 can be reliably matched. Under the premise, it is beneficial to reduce the overall size of the second hinge 35 and the second connection structure in the Z direction by reducing the distance between the second arc surface and the second arc sliding surface in the radial direction of the second arc surface, thereby facilitating the thinning of the rotating shaft mechanism 3.

[0221] In this embodiment, the specific structure of the second mating portion may be the same as that of the first mating portion 321 in the first example, and the specific structure of the second connecting portion may be the same as that of the first connecting portion 322 in the first example. The specific structure of the second connecting structure may be the same as that of the first connecting structure 37 in the first example. The assembly relationship of the second mating portion, the second connecting portion, and the second connecting structure may be the same as that of the first mating portion 321, the first connecting portion 322, and the first connecting structure 37 in the first example, and will not be elaborated here.

[0222] Based on any one of the above-mentioned first example and second example, in some other embodiments, a second mating portion and a second connecting portion are provided on the second door panel 33.

[0223] The second hinge 35 is provided with a second connecting structure. The second connecting structure is provided with a second arc surface. The center line of the second arc surface is the second center line. The second center line extends in the Y-axis direction. The second center line is parallel to the first center line o1.

[0224] The second housing 2 is provided with a second fixing structure. The second fixing structure is provided with a second arc surface. Both the second arc surface and the second arc surface are on the same side of the second center line. The second arc surface and the second arc surface face in opposite directions. On at least one switching path in the switching path where the foldable electronic device switches between the unfolded state and the folded state, the second mating portion slides along the second arc surface, and the second connecting portion slides along the second arc surface. Specifically, since the second housing 2 and the second hinge 35 are fixedly connected, by adopting the method of the second mating portion sliding along the second arc surface and the second connecting portion sliding along the second arc surface, not only can the relative rotation of the second door panel 33 and the second hinge 35 with the second center line as the rotation center line be realized. Moreover, since the second arc surface and the second arc surface face in opposite directions, in the radial direction of the second arc surface, the second mating portion and the second connecting portion can be limited between the second arc surface and the second arc surface, or the second arc surface and the second arc surface can be limited between the second mating portion and the second connecting portion, and the reliability of the cooperation is high.

[0225] Moreover, setting the second arc surface on the second housing 2 is beneficial to avoiding setting an arc surface on the second hinge 35 for sliding cooperation with the second connecting portion, or reducing the arc length of the arc surface provided on the second hinge 35 for sliding cooperation with the second connecting portion, thereby being beneficial to reducing the thickness of the second hinge 35 and further realizing the thin design of the rotating shaft mechanism 3. And, since the spatial layout of the second housing 2 is relatively large, the arc length dimension of the second arc surface provided on the second housing 2 can be set relatively large, which is beneficial to improving the reliability of the cooperation between the second hinge 35 and the second door panel 33.

[0226] In this embodiment, the specific structure of the second mating portion may be the same as that of the first mating portion 321 in the second example, and the specific structure of the second connecting portion may be the same as that of the first connecting portion 322 in the second example. The specific structure of the second connecting structure may be the same as that of the first connecting structure 37 in the second example. The specific structure of the second fixing structure may be the same as that of the first fixing structure 131 in the second example. The assembly relationship of the second mating portion, the second connecting portion, the second connecting structure, and the second fixing structure may be the same as that of the first mating portion 321, the first connecting portion 322, the first connecting structure 37, and the first fixing structure 131 in the second example, which will not be elaborated here.

[0227] In the description of this specification, specific features, structures, materials, or characteristics may be combined in a suitable manner in any one or more embodiments or examples.

[0228] 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 them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate 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, Comprising: A first housing and a rotating shaft mechanism; The rotating shaft mechanism includes a base, a first door panel, and a first hinge; The first door panel is provided with a first mating portion and a first connecting portion; The first hinge is fixedly connected to the first housing, and the first hinge is hinged to one side of the base; The first hinge is provided with a first connecting structure corresponding to the first mating portion and the first connecting portion on the first door panel. The first connecting structure is provided with a first arc surface and a first arc sliding surface. The center lines of the first arc surface and the first arc sliding surface are both the first center line. The first arc surface and the first arc sliding surface are on the same side of the first center line and face in opposite directions. The first arc surface and the first arc sliding surface are distributed in the extending direction of the first center line; When the foldable electronic device switches between the unfolded state and the folded state, the first mating portion slides along the first arc surface, and the first connecting portion slides along the first arc sliding surface.

2. The foldable electronic device according to claim 1, wherein The first connecting structure is an opening formed in the first hinge. The first arc surface and the first arc sliding surface are both provided in the opening. The first mating portion and the first connecting portion are located in the opening.

3. The foldable electronic device according to claim 2, wherein The opening has a first side wall surface, a second side wall surface, and a third side wall surface. The first side wall surface and the second side wall surface face each other in the extending direction of the first center line. The third side wall surface is connected between one end of the first side wall surface adjacent to the base and one end of the second side wall surface adjacent to the base. A boss extending towards the second side wall surface is provided on the first side wall surface. The first mating portion is located between the boss and the third side wall surface. The first arc surface is formed on the surface of the boss facing the first mating portion.

4. The foldable electronic device according to claim 3, wherein The first mating portion has a first arc mating surface. A limiting space is formed between the first mating portion and the first door panel on the side towards which the first arc mating surface faces. The boss is located in the limiting space, and the first mating portion is in sliding fit with the first arc surface by means of the first arc mating surface.

5. The foldable electronic device according to claim 4, wherein, The second side wall surface includes a first region and a second region. The second region is recessed away from the first side wall surface relative to the first region to define a recessed groove. The first arc sliding surface is formed on the groove side wall of the recessed groove; The first connecting portion is located in the recessed groove.

6. The foldable electronic device according to claim 5, wherein, The first mating portion has a limiting portion. In the extending direction of the first center line, the limiting portion is limited between the first side wall surface and the first region.

7. The foldable electronic device according to claim 5 or 6, wherein, One end of the first arc mating surface adjacent to the first connecting portion is provided with a connecting rib. The connecting rib is connected to the first door panel and the first connecting portion respectively. The connecting rib and the first connecting portion as a whole are limited between the bottom wall of the recessed groove and the boss.

8. The foldable electronic device according to any one of claims 2-7, characterized in that, The surface of the first mating portion facing away from the first arc surface is an arc-shaped structural surface. The center line of the arc-shaped structural surface is the first center line.

9. The foldable electronic device according to claim 8, wherein, An avoidance surface is formed at one end of the arc-shaped structural surface away from the first door panel; In a plane perpendicular to the first center line, a tangent line at one end of the arc-shaped structural surface adjacent to the avoidance surface is the first tangent line, and the avoidance surface is located on the side of the first tangent line close to the first door panel.

10. The foldable electronic device according to any one of claims 1-9, characterized in that, The absolute value of the difference between the diameters of the first circular arc surface and the first circular arc sliding surface is greater than or equal to 0 and less than or equal to 2 mm.

11. The foldable electronic device according to any one of claims 1-10, characterized in that, The first engaging portion has a first circular arc engaging surface, the center line of the first circular arc engaging surface is the first center line, the diameter of the first circular arc engaging surface is equal to that of the first circular arc surface, and the first engaging portion is slidably engaged with the first circular arc surface by means of the first circular arc engaging surface; and / or, The first connecting portion has a first circular arc adapting surface, the center line of the first circular arc adapting surface is the first center line, the diameter of the first circular arc adapting surface is equal to that of the first circular arc sliding surface, and the first connecting portion is slidably engaged with the first circular arc sliding surface by means of the first circular arc adapting surface.

12. The foldable electronic device according to any one of claims 1-11, characterized in that, The foldable electronic device includes a second housing; The rotating shaft mechanism further includes a second door panel and a second hinge member The second door panel is provided with a second engaging portion and a second connecting portion; The second hinge member is fixedly connected to the second housing, and the second hinge member is hinged to the other side of the base; The second hinge member is provided with a second connecting structure corresponding to the second engaging portion and the second connecting portion on the second door panel, and the second connecting structure is provided with a second circular arc surface and a second circular arc sliding surface; the center lines of the second circular arc surface and the second circular arc sliding surface are both the second center line, the second circular arc surface and the second circular arc sliding surface are on the same side of the second center line and face in opposite directions; the second circular arc surface and the second circular arc sliding surface are distributed in the extending direction of the second center line, and the second center line is parallel to the first center line; When the foldable electronic device switches between the unfolded state and the folded state, the second engaging portion slides along the second circular arc surface, and the second connecting portion slides along the second circular arc sliding surface.

13. A foldable electronic device, characterized in that, Including: A rotating shaft mechanism and a first housing; The rotating shaft mechanism includes a base, a first door panel and a first hinge member; The first door panel is provided with a first engaging portion and a first connecting portion; The first hinge member is fixedly connected to the first housing, and the first hinge member is hinged to one side of the base; The first hinge member is provided with a first connecting structure corresponding to the first engaging portion and the first connecting portion on the first door panel, and the first connecting structure is provided with a first circular arc surface; The first housing is provided with a first fixing structure, and the first fixing structure is provided with a first arc-shaped surface; The center lines of the first arc-shaped surface and the first circular arc surface are both the first center line, the first arc-shaped surface and the first circular arc surface are on the same side of the first center line and face in opposite directions; On at least one switching path in the switching path for the foldable electronic device to switch between the unfolded state and the folded state, the first engaging portion slides along the first circular arc surface, and the first connecting portion slides along the first arc-shaped surface.

14. The foldable electronic device according to claim 13, wherein The first arcuate surface is located on a side of the first circular arc surface away from the first center line and faces the first circular arc surface.

15. The foldable electronic device according to claim 14, wherein, An arcuate slider is provided on the first door panel. Arcuate surfaces on two radial sides of the arcuate slider are respectively a first circular arc mating surface and a first circular arc adapting surface. The first mating portion is the first circular arc mating surface, and the first connecting portion is the first circular arc adapting surface. Center lines of both the first circular arc mating surface and the first circular arc adapting surface are the first center line. Among them, a diameter of the first circular arc mating surface is equal to a diameter of the first circular arc surface, and a diameter of the first circular arc adapting surface is equal to a diameter of the first arcuate surface.

16. The foldable electronic device according to claim 15, wherein In the unfolded state, a lapping width dimension between the first circular arc adapting surface and the first arcuate surface is greater than or equal to 0.3 mm and less than or equal to 2 mm.

17. The foldable electronic device according to claim 13, wherein, The first arcuate surface and the first circular arc surface are distributed in an extending direction of the first center line.

18. The foldable electronic device according to any one of claims 13-17, characterized in that, The first connecting structure is a through hole formed in the first hinge member. The first circular arc surface is formed on a hole wall of the through hole, and the first fixing structure is located inside the through hole.

19. The foldable electronic device according to any one of claims 13-18, characterized in that, On an entire switching path of the foldable electronic device switching between the unfolded state and the folded state, the first connecting portion only slides along the first arcuate surface.

20. The foldable electronic device according to any one of claims 13-18, characterized in that, The first connecting structure is provided with a first circular arc sliding surface, and the first circular arc sliding surface and the first arcuate surface are co-cylindrical surfaces. The first circular arc sliding surface is located on a side of the first arcuate surface close to the base on an arcuate extension track of the first arcuate surface itself. The first connecting portion is in sliding fit with the first circular arc sliding surface.

21. The foldable electronic device according to claim 20, wherein, The foldable electronic device is the foldable electronic device according to claim 18. The first circular arc sliding surface is formed on a hole wall of the through hole facing the first circular arc surface, and the first circular arc sliding surface faces the first circular arc surface.

22. The foldable electronic device according to any one of claims 13-21, characterized in that, The first housing includes a first middle frame and a first connecting plate. The first middle frame has a first supporting surface. The first middle frame also has a first side face facing the rotating shaft mechanism. The first connecting plate is on a side of the first middle frame close to the rotating shaft mechanism. The first connecting plate and the first supporting surface are at opposite ends of the first side face. The first fixing structure is fixed on a surface of the first connecting plate facing the same direction as the first supporting surface and is located at an end of the first connecting plate close to the first side face.

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