Folding assembly and foldable electronic equipment

Abstract

The embodiment of the invention provides foldable electronic equipment. The foldable electronic equipment comprises a display screen, a first machine body, a second machine body and a rotating shaft, the display screen comprises a bendable part, and the bendable part comprises an end part and an end face; the rotating shaft comprises a base body which is arranged between the first machine body and the second machine body; the base body comprises a first surface and an end face, the first surface comprises a supporting part and a concave part, and the concave part corresponds to the end of the bendable part; the concave part comprises a first end facing the end face of the base body, and a second distance is formed between the first end and the end face of the base body; in the second direction, a first gap is formed between the bendable part and the concave part, a second gap is formed between the bendable part and the supporting part, and the first gap is larger than the second gap. According to the technical scheme, under the condition that the overall strength of the rotating shaft is not affected, the impact stress between the display screen and the rotating shaft when the shaft side angle of the foldable electronic equipment falls can be reduced, damage to the display screen is avoided, and the reliability of the foldable electronic equipment is improved.

Description

[0001] This application is a divisional application. The application number of the original application is 202380014915.5. The entire content of the original application is incorporated into this application by reference. Technical Field

[0002] The embodiments of the present application relate to the technical field of electronic devices, and in particular to a foldable component and a foldable electronic device. Background Art

[0003] Electronic devices are one of the most important tools in people's daily work and life. In order to solve the problem that traditional electronic devices are large in size and inconvenient to carry, foldable electronic devices have come into being. During the use of foldable electronic devices, there is a problem that the foldable electronic devices may fall due to improper use or slipping of the hands.

[0004] Since there are gaps between the components of the folding assembly of a foldable electronic device, the impact resistance of the display screen is reduced. When a foldable electronic device falls, its components often suffer varying degrees of damage, especially the curved part of the display screen, which usually collides with the base of the hinge, resulting in a higher probability of damage to the curved part. Summary of the invention

[0005] The embodiments of the present application provide a foldable component and a foldable electronic device, which can reduce the impact stress between the display screen and the foldable component when the foldable electronic device falls at an axial angle without affecting the overall strength of the foldable component, thereby avoiding damage to the display screen and improving the reliability of the foldable electronic device.

[0006] In the first aspect, the present application provides a folding component, which is applied to a foldable electronic device, comprising: a first body, a second body and a hinge; the hinge comprises a base, which is arranged between the first body and the second body; the base comprises a first surface of a curved portion facing a display screen of the foldable electronic device, the first surface comprising a supporting portion and a recessed portion; along a first direction, at least one side end of the curved portion forms a projection area on the first surface, the recessed portion is arranged corresponding to the projection area, and the recessed portion contains the projection area; at least one side end is formed by an end face of the curved portion extending a first distance along the first direction; along a second direction, a first gap is provided between the curved portion and the recessed portion, a second gap is provided between the curved portion and the supporting portion, and the first gap is greater than the second gap; wherein the first direction is an axial direction of the base, the second direction is a thickness direction of the base, and the supporting portion is an area of ​​the first surface excluding the recessed portion.

[0007] The folding assembly shown in the present application can be provided with a recessed portion on the first surface corresponding to at least one side end of the curved portion in the projection area of ​​the first surface, so that in the thickness direction of the base, the first gap between the curved portion and the recessed portion is larger than the second gap between the curved portion and the supporting portion. In this way, the display screen can be avoided through the first gap when the foldable electronic device falls at an axial angle, and the impact stress between the display screen and the folding assembly when the foldable electronic device falls at an axial angle is reduced without affecting the overall strength of the folding assembly, thereby avoiding damage to the display screen and improving the reliability of the foldable electronic device.

[0008] In one implementation, the recessed portion includes a first end facing the end surface of the substrate; the end surface of the substrate is at a second distance from the first end. In this embodiment, the first end of the recessed portion may not be directly disposed from the end surface of the substrate, and other components such as a cover may be disposed on the end surface of the substrate to protect the substrate or the display screen.

[0009] In one implementation, when the foldable electronic device is in a folded state, the first gap is a first value, the second gap is a second value, and the first value is greater than the second value; when the foldable electronic device is in an unfolded state, the first gap is a third value, the second gap is a fourth value, and the third value is greater than the fourth value; wherein the first value is different from the third value, and the second value is different from the fourth value. With this implementation, the numerical values ​​of the first gap and the second gap are different in the unfolded state and the folded state of the foldable electronic device, but the first gap is greater than the second gap in both the folded and unfolded states of the foldable electronic device.

[0010] In one implementation, the recessed portion includes at least one of a sink and an inclined surface. In this embodiment, the recessed portion can have a variety of structures. The structures of the different recessed portions only need to play a role in avoiding the display screen when the foldable electronic device falls in an isometric angle.

[0011] In one implementation, the inclined surface includes at least one of an inclined curved surface and an inclined plane. In this embodiment, the recessed portion may have a variety of structures. The structures of the different recessed portions are only required to avoid the display screen when the foldable electronic device falls in an isometric angle.

[0012] In one implementation, the recessed portion includes a second end facing away from the end surface of the base, and a third distance is provided between the second end and the end surface of the base, and the third distance is greater than the second distance. In this embodiment, the recessed portion can have a certain length in the first direction, so that there is a gap between the first surface and the curved portion in the area corresponding to the length, which can reduce the impact stress between the display screen and the folding assembly when the foldable electronic device falls at an axial side angle without affecting the overall strength of the folding assembly, thereby avoiding damage to the display screen and improving the reliability of the foldable electronic device.

[0013] In one implementation, the base includes: a shaft cover, which is arranged opposite to the bent portion; a cover plate, which is located between the shaft cover and the bent portion and fixedly connected to the shaft cover to form a cavity; and a base, at least a portion of which is located inside the cavity. In this implementation, the base can adopt this design method to design the structure in the embodiment of the present application.

[0014] In one implementation, when the foldable electronic device is in a folded state, the second gap is greater than or equal to 0.25 mm. With this implementation, the structure shown in the embodiment of the present application can be applied to a foldable electronic device having a second gap within this numerical range.

[0015] In one implementation, when the foldable electronic device is in the folded state, the difference between the first gap and the second gap is in the range of [0.1, 0.3] mm. With this implementation, the first gap can be set within this numerical range, and the impact stress between the display screen and the folding assembly when the foldable electronic device falls at an axial angle is reduced without affecting the overall strength of the folding assembly, thereby avoiding damage to the display screen and improving the reliability of the foldable electronic device.

[0016] In one implementation, when the foldable electronic device is in a folded state, the second gap is less than or equal to 0.4 mm. With this implementation, the structure shown in the embodiment of the present application can be applied to a foldable electronic device having a second gap within this numerical range.

[0017] In one implementation, the shaft further includes: a swing arm assembly; a groove is provided on the support portion, a first rotating member is provided in the groove, the first rotating member includes a second surface, the second surface is a side surface of the first rotating member away from the bottom surface of the groove, the second surface is parallel to the opening of the groove, and the first rotating member is connected to the swing arm assembly; when the foldable electronic device is in the unfolded state, the first rotating member supports the curved portion. With this embodiment, when the foldable electronic device is in the unfolded state, in order to avoid the reduction of the support strength of the base to the display screen due to the first gap, the first rotating member can be used to assist in supporting the display screen.

[0018] In a second aspect, the present application further provides a foldable electronic device, which includes a foldable component as described in the first aspect and its various implementations.

[0019] The foldable electronic device shown in the present application can be provided with a recessed portion on the first surface corresponding to at least one side end of the curved portion in the projection area of ​​the first surface, so that in the thickness direction of the substrate, the first gap between the curved portion and the recessed portion is larger than the second area between the curved portion and the supporting portion. In this way, the display screen can be avoided through the first gap when the foldable electronic device falls at an axial angle, and the impact stress between the display screen and the folding assembly when the foldable electronic device falls at an axial angle is reduced without affecting the overall strength of the folding assembly, thereby avoiding damage to the display screen and improving the reliability of the foldable electronic device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0021] Figure 1 is a schematic diagram of a foldable electronic device provided in an embodiment of the present application;

[0022] Figure 2 is a schematic diagram of a foldable electronic device provided in an embodiment of the present application;

[0023] Figure 3 is a schematic diagram of a hinge assembly of a foldable electronic device provided in an embodiment of the present application;

[0024] Figure 4 is a schematic diagram of a falling state of a foldable electronic device provided in an embodiment of the present application;

[0025] FIG5( a ) is a schematic diagram of a cross-sectional change of a foldable electronic device in a falling state provided by an embodiment of the present application;

[0026] FIG5( b ) is a partial cross-sectional view of the foldable electronic device in a falling state provided by an embodiment of the present application;

[0027] FIG5( c ) is a partial cross-sectional view of the foldable electronic device in a falling state provided by an embodiment of the present application;

[0028] FIG5( d ) is a partial cross-sectional view of the foldable electronic device in a falling state provided by an embodiment of the present application;

[0029] Figure 6 is an exploded schematic diagram of a first structure of a folding assembly shown in an embodiment of the present application;

[0030] Figure 7 It is a schematic diagram of the first structure of the folding assembly shown in the embodiment of the present application;

[0031] Figure 8 is a partially enlarged schematic diagram of a folding assembly shown in an embodiment of the present application;

[0032] Fig. 9 It is a schematic diagram of the combination of the swing arm assembly and the base shown in the embodiment of the present application;

[0033] Fig.10 It is a partial schematic diagram of the base shown in the embodiment of the present application;

[0034] Fig.11 is a schematic top view of a first surface shown in an embodiment of the present application;

[0035] Fig.12 is a schematic diagram of a third distance shown in an embodiment of the present application;

[0036] FIG13( a ) is a top view of a recessed portion shown in an embodiment of the present application;

[0037] FIG13( b ) is a perspective view of a recessed portion shown in an embodiment of the present application;

[0038] FIG. 13( c ) is a diagram showing the spatial position relationship of point O1 in an embodiment of the present application;

[0039] FIG. 13( d ) is a diagram showing the spatial position relationship of point O2 in an embodiment of the present application;

[0040] FIG. 13( e ) is a diagram showing the spatial position relationship of point O3 in an embodiment of the present application;

[0041] FIG. 13( f ) is a diagram showing the spatial position relationship of point O4 in an embodiment of the present application;

[0042] FIG14( a) is a partial cross-sectional view of a foldable electronic device in a falling state according to an embodiment of the present application;

[0043] FIG14( b ) is a partial cross-sectional view of a foldable electronic device in a falling state according to an embodiment of the present application;

[0044] FIG14( c ) is a partial cross-sectional view of the foldable electronic device in a falling state shown in an embodiment of the present application;

[0045] Fig.15 is a schematic diagram of the structure of the first rotating member shown in an embodiment of the present application;

[0046] Fig.16 is a second structural schematic diagram of a folding assembly shown in an embodiment of the present application;

[0047] Fig.17is a third structural schematic diagram of the folding assembly shown in the embodiment of the present application;

[0048] Fig.18 This is a fourth structural schematic diagram of the folding assembly shown in the embodiment of the present application. DETAILED DESCRIPTION

[0049] The technical solution of the embodiment of the present application will be clearly described below in conjunction with the drawings in the embodiment of the present application.

[0050] In the description of this application, unless otherwise specified, " / " means "or", for example, A / B can mean A or B. "And / or" in this article is merely a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. In addition, "at least one" means one or more, and "plurality" means two or more. The words "first", "second", etc. do not limit the quantity and execution order, and the words "first", "second", etc. do not limit them to be different.

[0051] It should be noted that, in this application, words such as "exemplary" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "for example" in this application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a specific way.

[0052] The terms used in the implementation method part of this application are only used to explain the specific embodiments of this application, and are not intended to limit this application. The embodiments of this application will be described in detail below in conjunction with the accompanying drawings.

[0053] The following first describes the application scenarios of the embodiments of the present application in conjunction with the accompanying drawings.

[0054] Figure 1 Schematic diagram of a foldable electronic device. A foldable electronic device is an electronic device whose display screen can be bent from 0 to 360 degrees. The foldable electronic device generally comprises: a first body 101, a second body 103 rotatably connected to the first body 101 via a hinge assembly 102, and a display screen 104 disposed on one side of the first body 101 and the second body 103. Based on the above structure, Figure 1 As shown in A, the foldable electronic device can be configured as an inward-folding foldable electronic device, such as Figure 1 As shown in B, the foldable electronic device can be configured as an outward-foldable foldable electronic device, such as Figure 1 As shown in C, the foldable electronic device can be configured as an up-and-down foldable electronic device.

[0055] It should be noted here that Figure 1 The dotted line in the figure indicates the position of the hinge assembly 102 of the foldable electronic device, which is not visible because it is blocked by the display screen 104.

[0056] The embodiments of the present application are applicable to inward-folding foldable electronic devices and up-and-down foldable electronic devices, in which the surfaces of one side of the display screen 104 for displaying images are close to each other when folded. The following embodiments are all exemplified by inward-folding foldable electronic devices.

[0057] Figure 2 is a schematic diagram of the components of a foldable electronic device. Figure 2 As shown, the display screen 104 of the foldable electronic device includes a first fixing portion 1041, a second fixing portion 1042 and a bending portion 1043, wherein the first fixing portion 1041 is used to be fixedly connected to the first body 101, the second fixing portion 1042 is used to be fixedly connected to the second body 103, and the bending portion 1043 is used to be relatively displaced with the first fixing portion 1041, the second fixing portion 1042 and the hinge assembly 102 to correspond to changes in the folded state and the unfolded state of the display screen 104.

[0058] Among them, the display screen 104 includes a display module and a transparent cover plate. The display module can display images and videos, etc. The display module can use a liquid crystal display (LCD), an organic light-emitting diode (OLED), an active matrix organic light-emitting diode or an active matrix organic light-emitting diode (AMOLED), a flexible light-emitting diode (FLED), Miniled, MicroLed, Micro-oLed, a quantum dot light-emitting diode (QLED), etc. The transparent cover plate covers the outside of the display module to protect the display module. The transparent cover plate can be a glass cover plate, and of course it can also be other transparent materials that can play a protective function. The display screen 104 can also have a touch function, that is, the display screen 104 can be a touch screen. The side surface of the display screen 104 used to display the image is the side surface of the transparent cover plate away from the display module.

[0059] Further Figure 2As shown, the foldable electronic device also includes a frame 105. After the frame 105, the first body 101 and the second body 103 are fixedly connected, a first fixing portion 1041 can be set on the first body 101, and a second fixing portion 1042 can be set on the second body 103, so that the frame 105, the first body 101 and the second body 103 can limit and support the display screen 104.

[0060] It should be noted here that the frame 105 can be integrally formed with the first body 101 and the second body 103, so that the first body 101, the second body 103 and the frame 105 together serve as the middle frame of the foldable electronic device. The frame 105 can also be fixedly connected to the first body 101 and the second body 103 as a part of the middle frame as the shell of the foldable electronic device. The present application does not limit the connection order and connection relationship of the above-mentioned components.

[0061] Figure 3 Schematic diagram of the hinge assembly of a foldable electronic device. Figure 3 As shown. The rotating shaft assembly 102 may include a swing arm 1021, a wedge block 1022, a door panel 1023, a cover plate 1024, a base 1025 and a shaft cover 1026. The shaft cover 1026 is arranged opposite to the bending portion 1043, the cover plate 1024 is located between the shaft cover 1026 and the bending portion 1043, and is fixedly connected to the shaft cover 1026 to form a cavity; at least a portion of the base 1025 is located inside the cavity. The combination formed by the cover plate 1024, the base 1025 and the shaft cover 1026 is used as the base 1020 of the rotating shaft assembly 102, so as to facilitate the arrangement of other components. The swing arm 1021 and the wedge block 1022 are integrally formed, and the virtual sliding tongue of the swing arm 1021 (such as Figure 3 The virtual sliding tongue is also connected to the virtual axis of the door panel 1023. In this connection mode, the wedge block 1022 is fixedly connected to the frame 105. Since the display screen 104 is also fixedly connected to the frame 105, the displacement of the wedge block 1022, the swing arm 1021 and the door panel 1023 relative to the base 1020 can enable the frame 105 and the display screen 104 to change from a folded state to an unfolded state.

[0062] It should be noted here that Figure 3 Only a partial schematic diagram of the shaft assembly 102 is shown, that is, a region at one end of the shaft assembly 102 extending a certain distance from the end surface of the shaft assembly 102 along the axial direction of the shaft assembly. The actual shaft assembly 102 also includes another part that is symmetrically arranged with respect to the schematic diagram. Figure 3 The actual description of the present application is expressed in terms of the overall configuration of the shaft assembly 102.

[0063] Figure 4 is a schematic diagram of the falling state of a foldable electronic device. Figure 4 As shown, taking the foldable electronic device in a folded state as an example, due to inertia, the axial angle of the foldable electronic device usually falls to the ground first, that is, the foldable electronic device undergoes an axial angle fall. During the axial angle fall, the position where the axial angle contacts the ground remains unchanged, and the foldable electronic device will be forced to unfold. At this time, the frame 105 and the display screen 104 will be displaced close to the hinge assembly 102, causing the bending portion 1043 to collide with the cover plate 1024, thereby causing damage to the display screen 104.

[0064] FIG5( a ) is a schematic diagram of the cross-sectional changes of a foldable electronic device when it falls.

[0065] A in Figure 5(a) is an overall schematic diagram of the foldable electronic device before it falls. Wherein, H1 is the cutting plane of the foldable electronic device, and Q1 is the projection direction of the cutting plane H1. B in Figure 5(a) is a top view of the foldable electronic device, where the section line K1 is the projection of the cutting plane H1 in the top view. C in Figure 5(a) is a partial schematic diagram of the cross-sectional view of the foldable electronic device in the Q1 direction. The cross-sectional view shown in C in Figure 5(a) is obtained by cutting as shown in A and B in Figure 5(a). D in Figure 5(a) is a partial schematic diagram of the foldable electronic device cut along the section line K2 shown in C in Figure 5(a). E in Figure 5(a) is a simplified schematic diagram of the spatial relationship between the base and the curved portion of the foldable electronic device before it falls. Wherein, the section line K3 is the projection of the cutting plane H1 in the side view direction.

[0066] FIG5(b) is a partial enlarged schematic diagram corresponding to the M2 area of ​​C in FIG5(a). That is, it only shows a cross-sectional schematic diagram of the area where one end of the hinge assembly 102 extends a certain distance from the end face of the hinge assembly 102 along the axial direction of the hinge assembly 102. As shown in FIG5(b), taking the axial side angle fall of the foldable device in the folded state as an example, before the foldable electronic device falls, the curved portion 1043 has a projection area on the surface of the side of the cover plate 1024 facing the curved portion 1043, and there is a gap between the projection area on the surface and the curved portion 1043. The gaps between the projection area and the curved portion 1043 are equal at every location. That is, P1 and P2 are equal as shown in the figure.

[0067] The following Figures 5(c) and 5(d) are both partial cross-sectional views corresponding to the area shown in Figure 5(b). Figure 5(c) is a partial cross-sectional change diagram of the falling state of the foldable electronic device. As shown in Figure 5(c), when the foldable electronic device is in the initial state of the shaft side angle fall, the shaft side angle (as shown in the M3 area in Figure 5(c)) contacts the ground. At this time, the speed of the contact area drops to 0, while other areas continue to fall due to inertia, and the frame 105 and the display screen 104 produce displacement close to the hinge assembly 102. At this time, one side end of the curved portion 1043 first contacts the cover plate 1024, that is, P1 is equal to 0 as shown in the figure, and one side end of the curved portion 1043 extends a certain distance from the end face of the hinge assembly 102 along the axial direction of the hinge assembly 102. There is a gap between the area and one side surface of the cover plate 1024, that is, P2 as shown in the figure has a certain distance, and P2 is equal to 0.1 mm. At this time, the shaft side angle of the M3 area is subjected to a large stress.

[0068] FIG5(d) is a partial cross-sectional diagram of the foldable electronic device in the falling state. As shown in FIG5(d), when the foldable electronic device is in the final state of the axial angle fall, the curved portion 1043 is completely in contact with the surface of the cover plate 1024 facing the curved portion 1043, that is, P1 is equal to 0, and P2 is equal to 0 as shown in the figure. At this time, the M3 area continues to bear a large stress. Figure 5(a)-Figure 5(d) As shown, during the falling state change of the foldable electronic device, the impact stress from the initial state to the final state of the axial side angle fall is relatively large. Therefore, the setting method of the rotating shaft assembly 102 in the traditional foldable electronic device can easily cause damage to the display screen 104 when it falls at an axial side angle.

[0069] In order to solve the problem that when a foldable electronic device falls, the bending portion 1043 usually collides with the base used to set the hinge assembly 102, resulting in a high probability of damage to the bending portion 1043, an embodiment of the present application shows a folding assembly.

[0070] The folding assembly shown in this application can be applied to foldable electronic devices, including but not limited to mobile phones, displays, tablet computers, car computers, etc. The embodiments of this application do not specifically limit the specific form of the above-mentioned foldable electronic devices.

[0071] Figure 6 FIG. 1 is an exploded schematic diagram of the first structure of the folding assembly shown in the embodiment of the present application. Figure 6 As shown, the folding assembly may include: a first body 1, a second body 2 and a hinge 3, the hinge 3 may include a base 4, the base 4 may be arranged between the first body 1 and the second body 2, and the base 4 includes a first surface 41 of a curved portion 51 facing a display screen 5 of the foldable electronic device.

[0072] In the embodiment of the present application, the axial direction of the substrate 4 is the Y-axis direction, the thickness direction of the substrate 4 is the Z-axis direction, and the direction perpendicular to the plane where the Y-axis and the Z-axis are located is the X-axis direction. Figure 6 The arrows shown indicate the positive directions of the X-axis, Y-axis, and Z-axis. The X-axis direction, Y-axis direction, and Z-axis direction involved in the following embodiments of the present application shall be based on this.

[0073] Figure 7 A in FIG. 1 is an overall schematic diagram of the first structure of the folding assembly shown in the embodiment of the present application. H2 is a cutting plane of the foldable electronic device, and Q2 is a projection direction of the cutting plane H2. Figure 7 B in FIG. 1 is a top view of the foldable electronic device shown in an embodiment of the present application, wherein the section line R1 is a projection of the cutting plane H2 in the top view. Figure 7 C in FIG. 1 is a partial schematic diagram of a cross-sectional view of the foldable electronic device in the direction of Q2 shown in an embodiment of the present application. Figure 7 The cross-sectional view shown in C is based on Figure 7 The sections are shown in A and B. Figure 7 The D in the figure is a foldable electronic device. Figure 7 A partial schematic diagram of the section line R2 shown in C. Figure 7 E in FIG. 1 is a simplified schematic diagram of the spatial relationship between the base and the bending portion of the foldable electronic device. The section line R3 is the projection of the section plane H2 in the side view direction.

[0074] It should be noted here that the end of the folding assembly, i.e., the area corresponding to X1, includes the end of the base 4 and the end of the curved portion 51. The end of the curved portion 51 is formed by extending a certain distance along the Y-axis direction from one end surface of the curved portion 51, and the end of the base 4 is formed by extending a certain distance along the Y-axis direction from one end surface of the base 4. In the embodiment of the present application, the base 4 includes at least one end, and the curved portion 51 includes at least one end.

[0075] Figure 8 A in Figure 7 A local enlarged schematic diagram corresponding to the M4 region in center C. Figure 8 B in is Figure 7 The local stereoscopic schematic diagram corresponding to the M4 area in middle C.

[0076] like Figure 8 As shown in A and B in FIG. 1 , in some embodiments, at least one side end of the curved portion 51 is formed by extending the end surface of the curved portion 51 along the Y-axis direction by a first distance D1. For example, the first distance D1 may be 13 mm. It should be noted that the embodiment of the present application does not set a specific value for the first distance D1, and the first distance D1 may be less than or equal to 80 mm.

[0077] The first surface 41 includes a recessed portion 411 and a support portion 412, wherein the support portion 412 is an area of ​​the first surface 41 other than the recessed portion 411, and along the first direction, at least one side end of the curved portion 51 forms a projection area M5 on the first surface 41, and the recessed portion 411 is arranged corresponding to the projection area M5, and the recessed portion 411 includes the projection area M5. The first direction is the axial direction of the substrate 4, that is, the Y-axis direction.

[0078] Along the second direction, there is a first gap S1 between the curved portion 51 and the recessed portion 411, and a second gap S2 between the curved portion 51 and the supporting portion 412, wherein the first gap S1 is greater than the second gap S2, wherein the second direction is the thickness direction of the substrate, i.e., the Z-axis direction. In this way, the recessed portion 411 can avoid the display screen 5 when the foldable electronic device is dropped in an axonometric angle.

[0079] Further Figure 6 As shown, in some embodiments, the base 4 may include a shaft cover 42, a base 43 and a cover plate 44. The shaft cover 42 may be arranged opposite to the curved portion 51, the cover plate 44 is located between the shaft cover 42 and the curved portion 51, and is fixedly connected to the shaft cover 42 to form a cavity, and at least a portion of the base 43 is located inside the cavity.

[0080] In some embodiments, the rotating shaft 3 may further include a swing arm assembly 6 , and the swing arm assembly 6 may include a swing arm 61 , a wedge block 62 and a door panel 63 .

[0081] Further Figure 6 As shown, the display screen 5 is arranged on the first body 1 and the second body 2. According to the different connection relationships between the display screen 5 and the first body 1 and the second body 2, the display screen 5 may include a bending portion 51, a first fixing portion 52 and a second fixing portion 53. The first fixing portion 52 is used to be fixedly connected to the first body 1, and the second fixing portion 53 is used to be fixedly connected to the second body 2. The bending portion 51 corresponds to the position of the swing arm assembly 6 and the base 4, is in a free state, and can produce relative displacement with the first fixing portion 52 and the second fixing portion 53 to adapt to the folding and unfolding functions of the folding assembly. When the folding assembly is in a folded state, the bending portion 51 can be in a water drop-shaped bending state. It should be noted here that the specific material of the display screen 5 can be set with reference to the display screen 104 in the above embodiment, and this application will not elaborate on this.

[0082] The frame 7 can be arranged at the edge of the display screen 5, the first body 1 and the second body 2, and fixedly connected to these components to play a role of limiting and supporting. It should be noted here that the frame 7 can be integrally formed with the first body 1 and the second body 2, so that the first body 1, the second body 2 and the frame 7 together serve as the middle frame of the foldable electronic device. The frame 7 can also be fixedly connected to the first body 1 and the second body 2 as the shell of the foldable electronic device as part of the middle frame.

[0083] Fig. 9 Schematic diagram of the swing arm assembly and the base assembly shown in the embodiment of the present application. Fig. 9 As shown, the swing arm 61 can be integrally formed with the wedge block 62, and the virtual sliding tongue of the swing arm 61 (such as Fig. 9 The virtual sliding tongue is connected to the annular groove formed by the base 43 and the cover plate 44 (as shown in the M6 ​​area in FIG. 1 ), and the virtual sliding tongue is also connected to the virtual axis of the door plate 63. Since the wedge block 62 is fixedly connected to the frame 7, and the display screen 5 is also fixedly connected to the frame 7, the displacement of the swing arm 11, the wedge block 12 and the door plate 13 relative to the base 4 along the Z-axis direction can enable the frame 7 and the display screen 5 to complete the change from the folded state to the unfolded state.

[0084] It should be noted here that the rotating shaft 3 and the base 4 include but are not limited to the components shown in the embodiment of the present application. The rotating shaft 3 and the base 4 can be provided with more or fewer components, and the present application does not impose any limitation on this.

[0085] The first surface 41 may be a side surface of the cover plate 44 facing the curved portion 51. When the base body 4 is other structures not including the cover plate 44, the first surface 41 may also be a side surface of other components facing the curved portion 51. In the embodiment of the present application, there is no limitation on the surface of the component that the first surface 41 is, and the first surface 41 may be the surface of any component that collides with the curved portion 51.

[0086] In some embodiments, the base 43 may be an integrally formed structure with the shaft cover 42, or the base 43 may be a separate structure from the shaft cover 42. The embodiment of the present application does not limit the connection method of the various components of the rotating shaft 3 and the base 4.

[0087] Fig.10 It is a partial schematic diagram of the substrate shown in the embodiment of the present application. Fig.10 A in the figure is a partial schematic diagram of the substrate in the folded state shown in an embodiment of the present application. Fig.10 B in FIG. 1 is a partial schematic diagram of the unfolded substrate shown in the embodiment of the present application. Fig.10As shown in A and B in FIG. 4 , in some embodiments, the recessed portion 411 includes a first end 402 facing the end surface 401 of the substrate, and a second distance D2 is provided between the end surface 401 of the substrate 4 and the first end 402 along the Y-axis direction. Since the edge of the substrate 4 usually includes a portion of the shaft cover 42 for supporting the display screen 5 in the unfolded state of the foldable electronic device, the recessed portion 411 does not need to be provided from the end surface 401 of the substrate 4 to avoid the display screen 5, and only needs to be provided in the projection area of ​​the first surface 41 corresponding to the end of the curved portion 51. In this case, the second distance D2 can be the thickness of the shaft cover 42. It should be noted here that the present application is only exemplified by the shaft cover 42, and the second distance D2 between the end surface 401 of the substrate and the first end 402 of the recessed portion 411 can also be provided as a structure of one or more other components. It should be noted that the area of ​​the recessed portion 411 can be greater than or equal to the projection area of ​​the end of the bent portion 51 on the first surface 41, so as to provide a certain displacement space when the bent portion 51 has an axial side angle drop, thereby avoiding collision between the bent portion 51 and the shaft cover 42.

[0088] In a specific implementation, the recessed portion 411 can be set as at least one of a sink and an inclined surface. The embodiment of the present application does not limit the specific shape of the recessed portion 411, and the recessed portion 411 can also be a step or other shape. Based on such a setting of a sink, an inclined surface, or a step, the height of the recessed portion 411 along the Z-axis direction is lower than the height of the support portion 412 along the Z-axis direction, and the recessed portion 411 can avoid the display screen 5 when the foldable electronic device is axonometrically angled. Therefore, any recessed portion 411 designed using such a setting and a derivative form of such a setting can be applied to the embodiment of the present application.

[0089] Fig.11 Schematic diagram of a first surface top view shown in the embodiment of the present application. Fig.11 As shown, the first surface 41 may be a smooth surface, or other components may be arranged thereon. In some embodiments, the inclined surface may include at least one of a continuous surface and a discontinuous surface. The embodiment of the present application does not limit the continuity of the plane where the recessed portion 411 is located. In some embodiments, the inclined surface may include at least one of an inclined curved surface and an inclined flat surface. In some embodiments, the inclined surface may include at least one of a curved surface with a gradually increasing curvature and a curved surface with a gradually decreasing curvature.

[0090] The first structure of the folding assembly in the embodiment of the present application is exemplified by taking the recessed portion 411 as an inclined surface, and the inclined surface is a continuous curved surface.

[0091] Fig.12In some embodiments, the recessed portion 411 includes a second end 403 facing away from the end surface of the substrate 4, and a third distance D3 is provided between the second end 403 and the end surface of the substrate 4, and the third distance D3 is greater than the second distance D2. Fig.12 A in FIG. 1 is a schematic diagram of a third distance cross section shown in an embodiment of the present application. Figure 7 C in the figure is the same section. Fig.12 B in FIG. 1 is a three-dimensional schematic diagram of the third distance shown in the embodiment of the present application. Fig.12 As shown in A and B in FIG. 1 , the gap between the first end 402 and the second end 403 of the recessed portion 411 and the corresponding curved portion 51 gradually decreases, and the gap between the supporting portion 412 and the corresponding curved portion 51 remains unchanged.

[0092] Figure 13(a)-Figure 13(f) It is a schematic diagram of the recessed portion provided in an embodiment of the present application.

[0093] FIG. 13( a ) is a top view of a recessed portion shown in an embodiment of the present application.

[0094] FIG13(b) is a three-dimensional view of a recessed portion shown in an embodiment of the present application. As shown in FIG13(a) and FIG13(b), the recessed portion 411 includes point O1, point O2, point O3, and point O4. Point O1, point O2, and point O3 are vertices in the top view of the recessed portion 411. Point O2, point O3, and point O4 are vertices in the side view of the recessed portion 411.

[0095] FIG. 13( c) is a spatial position relationship of point O1 shown in an embodiment of the present application. As shown in FIG. 13( b) and FIG. 13( c), point O1 is in the plane where the support portion of the first surface 41 is located. There is a first spacing T1 between point O1 and the end face of the substrate 4 along the negative direction of the Y axis. For example, the first spacing T1 can be 13 mm. The substrate 4 has two side surfaces along the X axis direction, and there is a second spacing T2 between point O1 and the side surface of the substrate 4 along the positive direction of the X axis. For example, the second spacing T2 can be 3.7 mm, and there is a third spacing T3 between point O1 and the side surface of the substrate 4 along the negative direction of the X axis. For example, the third spacing T3 can be 3.7 mm. There is a fourth spacing T4 between point O1 and the bottom surface of the substrate 4 along the negative direction of the Z axis. For example, the fourth spacing T4 can be 6 mm.

[0096] FIG13( d) is a spatial position relationship of point O2 shown in an embodiment of the present application. As shown in FIG13( d), point O2 is in the plane where the support portion of the first surface 41 is located. There is a fifth spacing T5 between point O2 and the end face of the substrate 4 along the negative direction of the Y axis, and in an example, the fifth spacing T5 is 1 mm. There is a sixth spacing T6 between point O2 and the side surface of the substrate 4 along the positive direction of the X axis, and in an example, the sixth spacing T6 is 1.2 mm. There is a seventh spacing T7 between point O2 and the side surface of the substrate 4 along the negative direction of the X axis, and in an example, the seventh spacing T7 is 6.2 mm. Since point O2 and point O1 are on the same plane, the distance between point O2 and the bottom surface of the substrate 4 along the negative direction of the Z axis is the same as the fourth spacing T4, which is not shown in the drawings.

[0097] FIG13( e) is a spatial position relationship of point O3 shown in an embodiment of the present application. As shown in FIG13( e), point O3 is in the plane where the support portion of the first surface 41 is located. Among them, there is an eighth spacing T8 between point O3 and the end face of the substrate 4 along the negative direction of the Y axis, and in an example, the eighth spacing T8 is 1 mm. There is a ninth spacing T9 between point O3 and the side surface of the substrate 4 along the positive direction of the X axis, and in an example, the ninth spacing T9 is 6.2 mm. There is a tenth spacing T10 between point O3 and the side surface of the substrate 4 along the negative direction of the X axis, and in an example, the tenth spacing T10 is 1.2 mm. Since point O3 and point O1 are on the same plane, the distance between point O3 and the bottom surface of the substrate 4 along the negative direction of the Z axis is the same as the fourth spacing T4, which is not shown in the drawings.

[0098] FIG. 13( f) is a spatial position relationship of point O4 shown in an embodiment of the present application. As shown in FIG. 13( f), point O4 is on the same plane as point O2 and point O3, so the distance between point O4 and the end face of substrate 4 along the negative direction of the Y axis is the same as the eighth spacing T8, which is not shown in the drawings. There is an eleventh spacing T11 between point O4 and the side face of substrate 4 along the positive direction of the X axis, and the eleventh spacing T11 is 3.7 mm for example. There is a twelfth spacing T12 between point O4 and the side face of substrate 4 along the negative direction of the X axis, and the twelfth spacing T12 is 3.7 mm for example. There is a thirteenth spacing T13 between point O4 and the bottom face of substrate 4 along the negative direction of the Z axis, and the thirteenth spacing T13 can be 3 mm for example.

[0099] As further shown in FIG. 13( e) and FIG. 13( f), the axial length L1 of the recessed portion 411 is the distance between the point O1 and the plane along the Z-axis direction where the first end 402 of the recessed portion 411 is located. For example, the axial length L1 of the recessed portion 411 can be 12 mm. The radial length L2 of the recessed portion 411 is the distance between the projections of the point O2 and the point O3 in the radial direction. For example, the radial length L2 of the recessed portion 411 can be 5 mm. Based on the structure in the above embodiment, the first gap S1 and the second gap S2 have a corresponding size relationship. In some embodiments, when the second gap S2 is 0.25 mm, the first gap S1 can be greater than 0.25 mm. For example, the first gap S1 is 0.3 mm.

[0100] Among them, the first gap S1 can be designed by selecting a suitable value according to the size of the second gap S2. If the value of the second gap S2 is small, the value of the first gap S1 can be designed to be relatively large to create more avoidance for the display screen 5. If the value of the second gap S2 is large, since there is already a certain avoidance space between the curved portion 51 and the base 4, the value of the first gap S1 can be designed to be relatively small. The embodiment of the present application does not limit the size of the first gap S1 and the second gap S2. The gap range shown in the embodiment of the present application is only for exemplary description, and the specific gap size can be set according to actual conditions.

[0101] In some embodiments, when the foldable electronic device is in the folded state, the second gap S2 may be greater than or equal to 0.25 mm.

[0102] In some embodiments, when the foldable electronic device is in the folded state, the second gap S2 may be less than or equal to 0.4 mm.

[0103] In some embodiments, when the foldable electronic device is in the folded state, the difference between the first gap S1 and the second gap S2 is in the range of [0.1, 0.3] mm.

[0104] It should be noted here that the numerical values ​​involved in the above-mentioned embodiment are only used for exemplary description. The above-mentioned numerical values ​​are only used to illustrate the spatial relationship formed by various points of the recessed portion 411. Since the thirteenth spacing T13 is smaller than the fourth spacing T4, this height difference forms the recessed portion 411. In this way, the base 4 is thinner than the supporting portion 412 due to the provision of the recessed portion 411. When the supporting portion 412 is able to support the display screen 5, the recessed portion 411 can also avoid the display screen 5 when an axonometric angle drop occurs.

[0105] The recessed portion 411 generated based on the numerical values ​​in the above-mentioned embodiment can reduce the amount of sinking of the first surface 41 and will not have a significant impact on the strength of the first surface 41. Therefore, the technical solution shown in the embodiment of the present application will not affect the supporting ability of the display screen 5 when the foldable electronic device is in the unfolded state.

[0106] FIG14( a ) is a partial cross-sectional schematic diagram of a foldable electronic device in a falling state. Fig.12 In (A) Figure 7 A partial enlarged schematic diagram corresponding to the M4 region of C. As shown in FIG14(a), taking the foldable electronic device falling in a folded state as an example, before the foldable electronic device falls, the gap between the first end 402 and the second end 403 of the recessed portion 411 corresponding to the curved portion 51 gradually decreases, that is, the first gap S1 shown in FIG14(a) is greater than the second gap S2. For example, S1 is 0.15 mm and S2 is 0.1 mm.

[0107] The following Figures 14(b) and 14(c) are both local cross-sectional views corresponding to the area shown in Figure 14(a). Figure 14(b) is a local cross-sectional change diagram of the falling state of the foldable electronic device. As shown in Figure 14(b), when the foldable electronic device is in the initial state of the axis side angle fall, the axis side angle (as shown in the M6 ​​area in Figure 14(b)) contacts the ground. At this time, the speed of this area drops to 0. Since the first surface 41 has a recessed portion 411, the curved portion 51 can continue to fall. At the same time, other areas continue to fall due to inertia, and the frame 7 and the curved portion 51 produce displacement close to the first surface 41. During this process, one side end of the curved portion 51 does not contact the first end of the recessed portion 411, that is, the first gap S1 shown in the figure has a certain distance, and the second gap S2 has a certain distance. For example, S1 is 0.1 mm and S2 is 0.1 mm. The avoidance of the first surface 41 to the curved portion 51 in the initial state of the axis side angle fall can reduce the stress on the curved portion 51 during this process.

[0108] FIG14(c) is a partial cross-sectional change diagram of the falling state of the foldable electronic device shown in the embodiment of the present application. As shown in FIG14(c), when the foldable electronic device is in the final state of the axial angle drop, the bent portion 51 is in full contact with the first surface 41, that is, P1 is equal to 0, and P2 is equal to 0 as shown in the figure. At this time, since the initial state of the axial angle drop has consumed a lot of stress, at the final state of the axial angle drop, the stress on the M6 ​​region is small, and the stress on the bent portion 51 is small, and the display screen 5 will not be greatly deformed and damaged.

[0109] In some embodiments, when the foldable electronic device is in the folded state, the first gap S1 is a first value, the second gap S2 is a second value, and the first value is greater than the second value; when the foldable electronic device is in the unfolded state, the first gap S3 is a third value, the second gap S2 is a fourth value, and the third value is greater than the fourth value; wherein the first value is different from the third value, and the second value is different from the fourth value. In this way, based on the first structure of the folding component, the gap between the recessed portion 411 and the curved portion 51 in the folded state and the unfolded state of the foldable electronic device changes, producing different effects. When the foldable electronic device is in the folded state, the first gap S1 avoids the display screen 5 when the foldable electronic device falls at an axial side angle. If the first gap S1 adopts a smaller first value, the impact on the support strength of the display screen 5 can be reduced while avoiding. If the first gap S1 adopts a larger first value, the support strength of the display screen 5 may be affected.

[0110] It should be noted here that the embodiment of the present application only shows the case where the first numerical value is different from the third numerical value, and the second numerical value is different from the fourth numerical value. In a specific implementation, there is a case where the first numerical value is equal to the third numerical value, and the second numerical value is equal to the fourth numerical value, and the embodiment of the present application does not limit this.

[0111] In order to achieve a better avoidance effect while not affecting the support strength of the display screen 5, the folding assembly may further include a first rotating member 8, so that the first rotating member 8 can replace the first surface 41 to support the display screen 5 in the unfolded state of the foldable electronic device, thereby avoiding the change of the support strength of the base 4 for the display screen 5 due to the provision of the recessed portion 411 on the first surface 41.

[0112] Fig.15 It is a schematic diagram of the structure of the first rotating member shown in an embodiment of the present application. Fig.15 A in FIG. 1 is a schematic diagram of the cross-sectional structure of the first rotating member shown in the embodiment of the present application. Figure 7 The M4 region of C in is the same region. Fig.15 As shown in A, a groove is provided in the area between the recessed portions 411 of the first surface 41, and a first rotating member 8 is provided in the groove. The first rotating member 8 includes a second surface 81, which is a side surface of the first rotating member 8 facing away from the bottom surface of the groove, and the second surface 81 is parallel to the opening of the groove. Fig.15 B is a three-dimensional schematic diagram of the floating door panel in the unfolded state shown in the embodiment of the present application. The first rotating member 8 can be connected to the swing arm 61, so that the first rotating member 8 can support the curved portion 51 in the unfolded state of the foldable electronic device. Fig.15 C in FIG. 1 shows a foldable electronic device in an unfolded state. Fig.15 Schematic diagram of sectioning at section line R4 of A. Fig.15As shown in C, when the foldable electronic device is in the unfolding process, the swing arm 61 drives the first rotating member 8 to cause the first rotating member 8 to generate a displacement along the Z-axis direction close to the display screen 5, thereby supporting the display screen 5 when the foldable electronic device is in the fully unfolded state. Fig.15 D in FIG. 1 shows a foldable electronic device in a folded state. Fig.15 A schematic diagram of a section taken at the section line R4 of A. When the foldable electronic device is in the folded state, the swing arm 11 drives the first rotating member 8 to cause the first rotating member 8 to move away from the display screen 5, thereby avoiding the display screen 5.

[0113] In this way, in the unfolded state of the foldable electronic device, the first rotating member 8 can play an auxiliary supporting role for the display screen 5 , compensating for the influence of the supporting strength of the display screen 5 caused by the recessed portion 411 provided on the first surface 41 .

[0114] The first structure of the folding assembly shown in the present application can set a recessed portion 411 on the first surface 41 corresponding to at least one side end of the curved portion 51 in the projection area of ​​the first surface 41, so that the first gap S1 between the curved portion 51 and the recessed portion 411 is greater than the second gap S2 between the curved portion 51 and the supporting portion in the thickness direction of the base 4. In this way, the display screen 5 can be avoided through the first gap S1 when the foldable electronic device falls at an axial angle, and the impact stress of the display screen 5 and the folding assembly when the foldable electronic device falls at an axial angle is reduced without affecting the overall strength of the folding assembly, thereby avoiding damage to the display screen 5 and improving the reliability of the foldable electronic device.

[0115] Fig.16 It is a schematic diagram of the second structure of the folding assembly shown in the embodiment of the present application at the H2 section.

[0116] like Fig.16 As shown, in some embodiments, the recessed portion 411 can be configured as an inclined curved surface, and the inclined curved surface can be a continuous curved surface. It should be noted that other components of the folding assembly can be configured with reference to the above embodiments, and this application will not elaborate on this.

[0117] Among them, the first rotating member 8 shown in the first structure of the folding assembly can be applied to other structures of the embodiment of the present application, and can be adaptively modified according to various structures to play a corresponding supporting role, and the present application does not limit this.

[0118] Fig.17 This is a third structural schematic diagram of the folding assembly shown in the embodiment of the present application.

[0119] Fig.17 For Figure 7 The cross-sectional view of C in the same section. Fig.17As shown, in some embodiments, the recessed portion 411 may be configured as an inclined curved surface, and the inclined curved surface may be a discontinuous curved surface.

[0120] It should be noted here that other components of the folding assembly can be arranged with reference to the above-mentioned embodiment, and this application will not elaborate on this.

[0121] Fig.18 is a fourth structural schematic diagram of the folding assembly shown in the embodiment of the present application. Fig.18 As shown, in some embodiments, the recessed portion 411 may be configured to be stepped.

[0122] In some embodiments, the folding component can be an axisymmetric component or an asymmetric component.

[0123] For example, since a camera is provided on one side of the foldable electronic device, when it falls at an axial angle, the falling angle of the axial angle of the side with the camera may deviate from the falling angle of the axial angle of the side without the camera. Based on this, the axial length, radial length, curvature, etc. of the recessed portion 411 may be set differently to generate more foldable component structures.

[0124] The embodiments of the present application also include a combination of the above-mentioned folding component structure or multiple folding component structures, which will not be elaborated in the embodiments of the present application.

[0125] In the embodiment of the present application, the recessed portion 411 can be selected into a variety of forms such as a groove, an inclined surface, and a step type under the premise that the first gap S1 is greater than the second gap S2, and the axial length and radial length of the recessed portion 411 can be adaptively designed, thereby generating a variety of folding component structures to reduce the impact stress between the display screen 5 and the folding component when the foldable electronic device falls at an axial side angle, thereby avoiding damage to the display screen 5 and improving the reliability of the foldable electronic device. The embodiment of the present application also provides a foldable electronic device, which includes the folding component provided in the above embodiment, and the foldable electronic device includes but is not limited to a mobile phone, a display, a tablet computer, a car computer, etc. The embodiment of the present application does not impose any special restrictions on the specific form of the above foldable electronic device.

[0126] The foldable electronic device shown in the present application can set a recessed portion 411 in the projection area of ​​the first surface 41 corresponding to the two ends of the bending portion 51, so that the first gap S1 is larger than the second gap S2. In this way, the display screen 5 can be avoided through the first gap S1 when the foldable electronic device falls at an axial angle. Without affecting the overall strength of the foldable component, the impact stress between the display screen 5 and the folding component when the foldable electronic device falls at an axial angle is reduced, thereby avoiding damage to the display screen 5 and improving the reliability of the foldable electronic device.

[0127] It should be understood that in various embodiments of the present application, the size of the serial number of each process does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiment.

[0128] Each part of this specification is described in a progressive manner, and the same or similar parts between the various embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the device and system embodiments, since they are basically similar to the method embodiments, the description is relatively simple, and the relevant parts can be referred to the description of the method embodiment part.

[0129] The specific implementation methods described above further illustrate the purpose, technical solutions and beneficial effects of the present application in detail. It should be understood that the above description is only the specific implementation methods of the present application and is not intended to limit the scope of protection of the present application. Any modifications, equivalent substitutions, improvements, etc. made on the basis of the technical solutions of the present application should be included in the scope of protection of the present application.

Claims

1. A foldable electronic device, characterized in that: include: A display screen, a first body, a second body, and a hinge; The display screen includes a bendable portion, the bendable portion includes an end portion and an end surface, the end portion of the bendable portion is a portion of the bendable portion extending from the end surface of the bendable portion to a first distance along a first direction; The rotating shaft includes a base, and the base is arranged between the first body and the second body; The base includes a first surface and an end surface, the first surface is a side surface of the base facing the bendable portion, and the first surface includes a supporting portion and a recessed portion, wherein the recessed portion corresponds to an end portion of the bendable portion; The recessed portion comprises a first end facing the end surface of the substrate, and a second distance exists between the first end and the end surface of the substrate; Along the second direction, there is a first gap between the bendable portion and the recessed portion, and there is a second gap between the bendable portion and the supporting portion, and the first gap is larger than the second gap; The first direction is the axial direction of the substrate, and the second direction is the thickness direction of the substrate.

2. The foldable electronic device according to claim 1, characterized in that: The recessed portion further includes a second end facing away from the end surface of the substrate, and a third distance exists between the second end and the end surface of the substrate, and the third distance is greater than the second distance.

3. The foldable electronic device according to claim 1, characterized in that: The end surface of the substrate is provided with a component for protecting the substrate and / or the display screen.

4. The foldable electronic device according to claim 3, characterized in that: The components include a cover.

5. The foldable electronic device according to any one of claims 1 to 4, characterized in that: The base comprises a shaft cover, a cover plate and a base.

6. The foldable electronic device according to claim 5, characterized in that: The shaft cover corresponds to the bendable portion; the cover plate is located between the shaft cover and the bendable portion, and the cover plate is fixedly connected to the shaft cover to form a cavity; at least a portion of the base is located inside the cavity.

7. The foldable electronic device according to any one of claims 1 to 6, characterized in that: The recessed portion includes a recessed groove or an inclined surface.

8. The foldable electronic device according to claim 7, characterized in that: The inclined surface includes an inclined curved surface or an inclined flat surface.

9. The foldable electronic device according to any one of claims 1 to 8, characterized in that: When the foldable electronic device is in a folded state, the first gap is a first value, the second gap is a second value, and the first value is greater than the second value; When the foldable electronic device is in an unfolded state, the first gap is a third value, the second gap is a fourth value, the third value is greater than the fourth value, wherein the first value is different from the third value, and the second value is different from the fourth value.

10. The foldable electronic device according to claim 1, characterized in that: When the foldable electronic device is in a folded state, the second gap is greater than or equal to 0.25 mm.

11. The foldable electronic device according to claim 10, characterized in that: When the foldable electronic device is in a folded state, the difference between the first gap and the second gap is in a range of [0.1, 0.3] mm.

12. The foldable electronic device according to claim 11, characterized in that: When the foldable electronic device is in a folded state, the second gap is less than or equal to 0.4 mm.

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