Electronic equipment, folding mechanism and foldable electronic equipment

Abstract

The invention discloses an electronic device, a folding mechanism and a foldable electronic device.The folding mechanism comprises a base and a first swing arm, the base is provided with a first sliding groove face and a second sliding groove face which are coaxial, the first sliding groove face and the second sliding groove face are both arc-shaped faces, and the first sliding groove face and the second sliding groove face are arranged at intervals in the axis direction of the first sliding groove face; the radius of the second sliding groove face is larger than that of the first sliding groove face. The first swing arm is provided with a first surface and a second surface which are opposite, the first surface is provided with a first matching surface and a second matching surface, the first matching surface and the second matching surface are both arc-shaped surfaces, the first matching surface is attached to the first sliding groove surface and is in sliding fit with the first sliding groove surface, and the second matching surface is attached to the second sliding groove surface and is in sliding fit with the second sliding groove surface; the distance between the first surface and the axis of the first matching surface is smaller than the distance between the second surface and the axis of the first matching surface. According to the folding mechanism, the problems of shaking and jamming between the first swing arm and the base are solved, and the stability of the folding mechanism during use is improved.

Description

[0001] This application is a divisional application of the Chinese patent application submitted to the State Intellectual Property Office on February 29, 2024, with application number 202410232116.1 and application name “Folding mechanism and foldable electronic device”. Technical Field

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

[0003] In recent years, electronic devices have been updated at an increasingly rapid pace. Foldable electronic devices are becoming increasingly popular among users because they can combine a larger display area with better portability.

[0004] Foldable electronic devices usually include a flexible screen, a base and two shells, which are respectively mounted on both sides of the base through swing arms and can rotate relative to the base. When the electronic device is in the folded state, the contact surface between the swing arm and the base is small, which is prone to shaking and jamming. Summary of the invention

[0005] The present application provides an electronic device, a folding mechanism and a foldable electronic device, which improve the stability of the folding mechanism when in use.

[0006] The technical solution is as follows:

[0007] A first aspect of the present application provides a folding mechanism, comprising:

[0008] The base has a first chute surface and a second chute surface, the first chute surface and the second chute surface are both arc-shaped surfaces and are coaxially arranged, and the first chute surface and the second chute surface are spaced apart along the axial direction of the first chute surface, and the radius of the second chute surface is greater than the radius of the first chute surface;

[0009] The first swing arm has a first surface and a second surface arranged opposite to each other, the first surface has a first mating surface and a second mating surface, the first mating surface and the second mating surface are both arc-shaped surfaces, the first mating surface is in contact with and slidably fits with the first slide groove surface, the second mating surface is in contact with and slidably fits with the second slide groove surface, and the distance between the axis of the first surface and the first mating surface is smaller than the distance between the axis of the second surface and the first mating surface.

[0010] In the above-mentioned folding mechanism, during the rotation of the first swing arm relative to the base, the first mating surface slides relative to the first slide groove surface, and the second mating surface slides relative to the second slide groove surface. When the folding mechanism is in the folded state, since the radius of the second slide groove surface is greater than the radius of the first slide groove surface, the central angle corresponding to the contact surface between the first mating surface and the first slide groove surface and the central angle corresponding to the contact surface between the second mating surface and the second slide groove surface are in the same area, so the circumferential length of the contact surface between the second mating surface and the second slide groove surface is greater than the circumferential length of the contact surface between the first mating surface and the first slide groove surface, thereby increasing the circumferential length corresponding to the contact surface between the first swing arm and the base, thereby increasing the overlap between the first swing arm and the base, and increasing the contact area between the first swing arm and the base, which can reduce the shaking and jamming problems between the first swing arm and the base, and improve the stability of the folding mechanism when in use.

[0011] In some implementations, the number of the first mating surfaces is at least two, the plurality of first mating surfaces are arranged at intervals along the axis of the first mating surfaces, and at least one second mating surface is arranged between adjacent first mating surfaces.

[0012] In this arrangement, the first mating surface and the second mating surface are arranged alternately, thereby improving the contact stability between the first swing arm and the base.

[0013] In some implementations, the first swing arm has a connected rotating part and a linkage part, the rotating part has a first matching part and a second matching part, the number of the first matching parts is multiple, a second matching part is arranged between each first matching part, each first matching part is connected to the linkage part, the second matching part is connected to at least one first matching part, the first matching part is provided with a first matching surface, and the second matching part is provided with a second matching surface.

[0014] In this arrangement, the first matching portion and the second matching portion are arranged alternately, so that the first matching surface and the second matching surface are arranged alternately, thereby improving the contact stability between the first swing arm and the base.

[0015] In some implementations, a second matching portion is disposed between every two adjacent first matching portions, and in the axial direction of the first matching surface, the second matching portion is connected to the two adjacent first matching portions.

[0016] In this arrangement, both sides of the second matching portion are respectively connected to the first matching portion, and the connection strength of the second matching portion is higher.

[0017] In some implementations, two second matching portions are disposed between two adjacent first matching portions, the two second matching portions are respectively connected to the adjacent first matching portions, and a first gap is provided between the two second matching portions.

[0018] In this arrangement, a solid structure may be provided in the area of ​​the base corresponding to the first gap, thereby improving the structural strength of the base.

[0019] In some implementations, the first swing arm is provided with a first through hole, which penetrates the first swing arm radially along the second mating surface, and the first swing arm has a linkage portion away from the base, and the second mating surface is at least located on one side of the first through hole away from the linkage portion.

[0020] In this arrangement, the thickness of the first swing arm in the thickness direction of the base is relatively smaller, so that the thickness of the folding mechanism can be smaller.

[0021] In some implementations, the base has a third slide groove surface, the third slide groove surface is an arc-shaped surface, the third slide groove surface is coaxially arranged with the first slide groove surface, and the radius of the third slide groove surface is smaller than the radius of the first slide groove surface; the first surface has a third mating surface, the third mating surface is an arc-shaped surface, and the third mating surface is in contact with and slidably fits with the third slide groove surface.

[0022] In this arrangement, when the folding mechanism is in the folded state, the first swing arm and the base are still in contact through the third slide groove surface and the third matching surface, so the contact surface is further increased and the stability is further improved.

[0023] In some implementations, the third mating surface is spaced apart from the first mating surface in the axial direction of the first mating surface, and the third mating surface is located on a side of the first mating surface away from the second mating surface.

[0024] In this arrangement, the structural thickness between the third mating surface and the first mating surface is relatively large, which can improve the structural strength of the first swing arm.

[0025] In some implementations, the base includes a first base and a second base, the first base is connected to one side of the second base in a thickness direction, and the first slide groove surface and the second slide groove surface are both arranged on the first base.

[0026] In this arrangement, the split arrangement of the first substrate and the second substrate is conducive to the production and processing of the first slide groove surface and the second slide groove surface.

[0027] In some implementations, the first substrate includes a main body, a slide groove body and a first connecting body, the main body is connected to the second substrate, in the width direction of the first substrate, the slide groove body and the main body are respectively connected to both sides of the first connecting body, and the second slide groove surface is located on the side of the slide groove body facing the second substrate.

[0028] In this setting, one side of the slide groove body in the width direction is connected to the main body, that is, the thickness of the first connecting body is not affected by the setting position of the first slide groove surface or the second slide groove surface, so that the thickness of the first connecting body can be set larger and the connection strength is stronger.

[0029] In some implementations, the first substrate includes a main body, a slide groove body, a support body and a second connecting body, and the main body is connected to the second substrate; in the axial direction of the first slide groove surface, the two sides of the main body are respectively connected to the support body, and the two sides of the slide groove body are respectively provided with the support body and the second connecting body, and the two ends of the slide groove body are respectively connected to the corresponding support body through the corresponding second connecting body.

[0030] In this arrangement, both ends of the chute body in the length direction are connected to the main body, and the connection stability is stronger.

[0031] In some implementations, one of the first substrate and the second substrate is provided with a limiting column, and the other substrate is provided with a limiting hole, and the limiting column is inserted into the limiting hole.

[0032] In this arrangement, the arrangement of the limiting columns and the limiting holes facilitates the installation and positioning of the first substrate and the second substrate.

[0033] In some implementations, the base is provided with a fourth slide groove surface, and the second surface is provided with a fourth mating surface. The fourth slide groove surface and the fourth mating surface are both arc-shaped surfaces. The fourth slide groove surface is coaxially arranged with the first slide groove surface, and the fourth mating surface fits and slides with the fourth slide groove surface.

[0034] In this arrangement, both the first surface and the second surface of the first swing arm are in contact with the base, thereby improving the stability of the first swing arm during relative rotation with the base.

[0035] In some implementations, the base is provided with a stop groove having a stop surface, the second surface has a stop portion, the stop portion is slidably assembled in the stop groove, and the stop portion contacts the stop surface when the folding mechanism is in a folded state.

[0036] In this arrangement, the setting of the stop portion and the stop surface can limit the rotation range of the first swing arm relative to the base, that is, limit the folding angle of the folding mechanism, so as to facilitate the control of the angle of the folding mechanism in the folded state.

[0037] The second aspect of the present application provides a foldable electronic device, comprising a first shell, a second shell, a flexible screen and a folding mechanism as provided in any of the above technical solutions, the folding mechanism is connected between the first shell and the second shell, and the flexible screen is laid on one side of the first shell, the second shell and the folding mechanism.

[0038] Through the above technical solution, since the foldable electronic device includes the above folding mechanism, it at least has all the beneficial effects of the folding mechanism, which will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1is a structural schematic diagram of a foldable electronic device in a folded state using a folding mechanism provided in an embodiment of the present application;

[0040] Figure 2 is a structural schematic diagram of a foldable electronic device in a semi-expanded state using the folding mechanism provided in an embodiment of the present application;

[0041] Figure 3 is a structural schematic diagram of a foldable electronic device in an unfolded state using a folding mechanism provided in an embodiment of the present application;

[0042] Figure 4 It is a schematic diagram of the exploded parts of a foldable electronic device to which the folding mechanism provided by an embodiment of the present application is applied;

[0043] Figure 5 It is a schematic diagram of the relative positions of a folding mechanism, a first housing, and a second housing in a foldable electronic device to which the folding mechanism provided by an embodiment of the present application is applied;

[0044] Figure 6 is a top view of a foldable electronic device to which the folding mechanism provided in an embodiment of the present application is applied (excluding the flexible screen);

[0045] Figure 7 is a schematic diagram of the connection between a folding mechanism and a door panel in a foldable electronic device to which the folding mechanism provided by an embodiment of the present application is applied;

[0046] Figure 8 is a structural schematic diagram of a folding mechanism provided in an embodiment of the present application;

[0047] Fig. 9 is a partial schematic diagram of the folding mechanism provided in the first embodiment of the present application in a fully unfolded state (only one set of first swing arms and a base is shown);

[0048] Fig.10 It is a partial schematic diagram of the folding mechanism provided in the first embodiment of the present application in a folded state (only one set of first swing arms and a base is shown);

[0049] Fig.11 It is a schematic exploded view of the local structure of the folding mechanism provided in the first embodiment of the present application (only one set of first swing arms and a base are shown);

[0050] Fig.12 It is a top view of a partial structure of the folding mechanism provided in the first embodiment of the present application (only a set of first swing arms and a base are shown);

[0051] Fig.13 yes Fig.12 Section view at A1-A1 Figure 1 ;

[0052] Fig.14 yes Fig.12 Section view at A1-A1 Figure 2 ;

[0053] Fig.15 yes Fig.12 Section view at B1-B1 Figure 1 ;

[0054] Fig.16 yes Fig.12 Section view at B1-B1 Figure 2 ;

[0055] Fig.17 is a structural schematic diagram of a first substrate in a folding mechanism provided in the first embodiment of the present application at a viewing angle;

[0056] Fig.18 is a structural schematic diagram of the first base in the folding mechanism provided in the first embodiment of the present application at another viewing angle;

[0057] Fig.19 is a structural schematic diagram of a first swing arm in a folding mechanism provided in the first embodiment of the present application at a viewing angle;

[0058] Fig. 20 is a structural schematic diagram of the first swing arm in the folding mechanism provided in the first embodiment of the present application at another viewing angle;

[0059] Fig.21 yes Fig.12 Sectional view at C1-C1;

[0060] Fig. 22 is an exploded schematic diagram of parts of a folding mechanism provided in a second embodiment of the present application;

[0061] Fig.23 is a schematic diagram of a folding mechanism provided in a second embodiment of the present application in a fully unfolded state;

[0062] Fig.24 is a schematic diagram of a folding mechanism provided in a second embodiment of the present application in a folded state;

[0063] Fig.25 is a top view of the folding mechanism provided in the second embodiment of the present application;

[0064] Fig.26 yes Fig.25 Sectional view at A2-A2;

[0065] Fig. 27 yes Fig.25 Sectional view at B2-B2;

[0066] Fig.28 yes Fig.25Sectional view at C2-C2;

[0067] Fig.29 yes Fig.25 A cross-sectional view at D2-D2 in FIG.

[0068] Fig.30 is a structural schematic diagram of a first swing arm in a folding mechanism provided in a second embodiment of the present application at a viewing angle;

[0069] Fig.31 is a structural schematic diagram of the first swing arm in the folding mechanism provided in the second embodiment of the present application at another viewing angle;

[0070] Fig.32 is a structural schematic diagram of a first substrate in a folding mechanism provided in a second embodiment of the present application at a viewing angle;

[0071] Fig.33 is a structural schematic diagram of the first base in the folding mechanism provided in the second embodiment of the present application at another viewing angle;

[0072] Fig.34 is an exploded schematic diagram of parts of a folding mechanism provided in a third embodiment of the present application;

[0073] Fig.35 is a schematic diagram of a folding mechanism provided in a third embodiment of the present application in a fully unfolded state;

[0074] Fig.36 is a schematic diagram of a folding mechanism provided in a third embodiment of the present application in a folded state;

[0075] Fig.37 is a top view of a folding mechanism provided in a third embodiment of the present application;

[0076] Fig.38 yes Fig.37 A cross-sectional view at A3-A3 in the middle;

[0077] Fig.39 yes Fig.37 Sectional view at B3-B3;

[0078] Fig.40 yes Fig.37 Sectional view at C3-C3;

[0079] Fig.41 yes Fig.37 A cross-sectional view at D3-D3 in FIG.

[0080] Fig.42 is a structural schematic diagram of a first swing arm in a folding mechanism provided in a third embodiment of the present application at a viewing angle;

[0081] Fig.43is a structural schematic diagram of the first swing arm in the folding mechanism provided in the third embodiment of the present application at another viewing angle;

[0082] Fig.44 is a structural schematic diagram of a first substrate in a folding mechanism provided in a third embodiment of the present application at a viewing angle;

[0083] Fig.45 is a structural schematic diagram of the first base in the folding mechanism provided in the third embodiment of the present application at another viewing angle;

[0084] Fig.46 is an exploded schematic diagram of parts of a folding mechanism provided in a fourth embodiment of the present application;

[0085] Fig.47 is a schematic diagram of a folding mechanism provided in a fourth embodiment of the present application in a fully unfolded state;

[0086] Fig.48 is a schematic diagram of a folding mechanism provided in a fourth embodiment of the present application in a folded state;

[0087] Fig.49 is a top view of a folding mechanism provided in a fourth embodiment of the present application;

[0088] Fig.50 yes Fig.49 Sectional view at A4-A4;

[0089] Fig.51 yes Fig.49 A cross-sectional view at B4-B4;

[0090] Fig.52 yes Fig.49 A cross-sectional view at C4-C4;

[0091] Fig.53 yes Fig.49 A cross-sectional view at D4-D4 in FIG.

[0092] Fig.54 is a structural schematic diagram of a first swing arm in a folding mechanism provided in a fourth embodiment of the present application at a viewing angle;

[0093] Fig.55 is a structural schematic diagram of the first swing arm in the folding mechanism provided in the fourth embodiment of the present application at another viewing angle;

[0094] Fig.56 is a structural schematic diagram of a first substrate at a viewing angle in a folding mechanism provided in a fourth embodiment of the present application;

[0095] Fig.57 is a structural schematic diagram of the first base in the folding mechanism provided in the fourth embodiment of the present application at another viewing angle;

[0096] Fig.58 is an exploded schematic diagram of parts of a folding mechanism provided in a fifth embodiment of the present application;

[0097] Fig.59 is a schematic diagram of a folding mechanism provided in a fifth embodiment of the present application in a fully unfolded state;

[0098] Fig.60 is a schematic diagram of a folding mechanism provided in a fifth embodiment of the present application in a folded state;

[0099] Fig.61 is a top view of the folding mechanism provided in the fifth embodiment of the present application when it is in a fully unfolded state;

[0100] Fig.62 is a top view of the folding mechanism provided in the fifth embodiment of the present application in a folded state;

[0101] Fig.63 for Fig.62 Sectional view at A5-A5;

[0102] Fig.64 for Fig.62 Sectional view at B5-B5;

[0103] Fig.65 for Fig.62 A cross-sectional view at C5-C5;

[0104] Fig.66 for Fig.62 A cross-sectional view at D5-D5 in FIG.

[0105] Fig.67 is a structural schematic diagram of a first swing arm in a folding mechanism provided in a fifth embodiment of the present application at a viewing angle;

[0106] Fig.68 is a structural schematic diagram of the first swing arm in the folding mechanism provided in the fifth embodiment of the present application at another viewing angle;

[0107] Fig.69 is a structural schematic diagram of the first swing arm in the folding mechanism provided in the fifth embodiment of the present application at another viewing angle;

[0108] Fig.70 is a structural schematic diagram of a first substrate in a folding mechanism provided in a fifth embodiment of the present application at a viewing angle;

[0109] Fig.71 is a structural schematic diagram of the first base in the folding mechanism provided in the fifth embodiment of the present application at another viewing angle;

[0110] Fig.72It is a structural schematic diagram of the first substrate in the folding mechanism provided in the fifth embodiment of the present application at another viewing angle.

[0111] The meanings of the figures are as follows:

[0112] 1. Foldable electronic device; 10. Folding mechanism; 20. First housing; 30. Second housing; 40. Flexible screen; 41. First part; 42. Second part; 43. Foldable part; 50. Door panel; 100. Base; 110. First base body; 111. First slide groove surface; 112. Second slide groove surface; 113. Third slide groove surface; 114. Support body; 115. First connecting body; 116. Second connecting body; 117. Limiting column; 118. Main body; 119. Slide groove body; 120, second base; 121, limiting hole; 122, fourth slide groove surface; 130, stop groove; 131, stop surface; 210, main swing arm; 220, auxiliary swing arm; 300, first swing arm; 311, first matching surface; 312, second matching surface; 313, third matching surface; 314, fourth matching surface; 320, linkage part; 330, first through hole; 340, rotating part; 341, first matching part; 342, second matching part; 350, first gap; 360, stop part. DETAILED DESCRIPTION

[0113] In order to make the objectives, technical solutions and advantages of the present application more clear, the implementation methods of the present application will be further described in detail below with reference to the accompanying drawings.

[0114] It should be understood that the "multiple" mentioned in this application refers to two or more. 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 only a description of the association relationship of associated objects, indicating that there can be three relationships, 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, in order to facilitate the clear description of the technical solution of this application, the words "first" and "second" are used to distinguish between the same items or similar items with basically the same functions and effects. Those skilled in the art can understand that the words "first" and "second" do not limit the quantity and execution order, and the words "first" and "second" do not limit them to be different.

[0115] The folding mechanism and foldable electronic device provided in the embodiments of the present application are explained in detail below. In each embodiment of the present application, electrical connection refers to the connection between two electrical devices through a conductor so that electrical signals can be transmitted between the two electrical devices. In each of the drawings of the present application, the leads with solid arrows all point to the surface of the device, the leads with dots all point to the device itself, and the leads with hollow arrows all point to an area, such as a hole, a groove, a gap, a cavity, etc.

[0116] In the related art, the folding mechanism of the foldable electronic device includes a base and a swing arm, and the swing arm and the base are rotationally connected through a virtual groove structure. Specifically, an arc-shaped sliding block is set on the swing arm, and an arc-shaped groove is set on the base. When the sliding block moves along the arc-shaped groove, the swing arm rotates relative to the base. In the process of the swing arm rotating from the fully expanded state to the folded state relative to the base, the side of the folding mechanism adjacent to the flexible screen is the front side, and at least the front side of the sliding block contacts the arc-shaped groove and slides relatively. In the cross section perpendicular to the axial direction of the arc-shaped groove, the contact surface between the sliding block and the arc-shaped groove is arc-shaped. When the folding mechanism is in the fully expanded state, the sliding block is located in the arc-shaped groove. More parts, that is, the amount of overlap between the sliding block and the arc-shaped groove is the largest. When the folding mechanism is in the folded state, less parts of the sliding block are located in the arc-shaped groove, that is, the amount of overlap between the sliding block and the arc-shaped groove is the smallest. As foldable devices become thinner and lighter, the thickness of the base decreases, so that when the folding mechanism is in the folded state, the overlap between the sliding block and the arc groove is smaller, which can easily cause the swing arm to shake relative to the base, or the swing arm to get stuck when it rotates relative to the base.

[0117] The embodiments of the present application provide a folding mechanism and a foldable electronic device, which are used to alleviate the problem of stagnation during rotation caused by insufficient overlap of the swing arm on the base to a certain extent. It is worth noting that the overlap of the swing arm on the base specifically refers to the arc length corresponding to the contact surface between the swing arm and the base in a cross section perpendicular to the length direction of the base.

[0118] The foldable electronic device 1 provided in the embodiment of the present application can be a mobile phone, a tablet computer, a wearable device, a vehicle-mounted device, an augmented reality (AR) / virtual reality (VR) device, a laptop computer, an ultramobile personal computer (UMPC), a netbook, a personal digital assistant (PDA), and other foldable electronic device products with a flexible screen. The embodiment of the present application does not limit the specific type of the foldable electronic device. In the embodiment of the present application, the foldable electronic device 1 is taken as an example of a mobile phone for introduction and explanation.

[0119] Figure 1 The foldable electronic device 1 is shown in a folded state. Figure 2 The foldable electronic device 1 is shown in a semi-expanded state. Figure 3 The foldable electronic device 1 is shown in an unfolded state. Figure 2 The unfolding angle α of the foldable electronic device 1 is 90 degrees. Figure 3 The unfolding angle β of the foldable electronic device 1 is shown to be 180 degrees.

[0120] It should be noted that the angles illustrated in the embodiments of the present application are allowed to have slight deviations. Figure 2 The unfolding angle α of the foldable electronic device 1 shown is 90 degrees, which means that α can be 90 degrees, or approximately 90 degrees, such as 80 degrees, 85 degrees, 95 degrees or 100 degrees. Figure 3 The unfolding angle β of the foldable electronic device 1 shown is 180 degrees, which means that β can be 180 degrees, or approximately 180 degrees, such as 170 degrees, 175 degrees, 185 degrees, and 190 degrees. The angles described below can be understood in the same way.

[0121] The foldable electronic device 1 shown in the embodiment of the present application is an electronic device that can be folded once. In some other embodiments, the foldable electronic device 1 can also be an electronic device that can be folded multiple times (more than twice). In this case, the foldable electronic device 1 can include multiple parts, two adjacent parts can be folded relatively close to each other until the foldable electronic device 1 is in a folded state, and two adjacent parts can be unfolded relatively far away from each other until the foldable electronic device 1 is in an unfolded state.

[0122] For the convenience of description, in this embodiment, the width direction of the foldable electronic device 1 is defined as the X-axis direction, the length direction of the foldable electronic device 1 is defined as the Y-axis direction, and the thickness direction of the foldable electronic device 1 is defined as the Z-axis direction. The X-axis direction, the Y-axis direction and the Z-axis direction are mutually perpendicular. It should be noted that the dimension in the width direction is not necessarily larger than the dimension in the length direction. It is worth noting that the qualifiers of the relevant positional relationships such as parallel and perpendicular mentioned in this embodiment are all for the current technological level, rather than an absolute and strict definition in the mathematical sense. A small amount of deviation is allowed, and both approximately parallel and approximately perpendicular are acceptable. For example, A and B are parallel, which means that A and B are parallel or approximately parallel, and the angle between A and B can be between 0 degrees and 10 degrees. For example, A and B are perpendicular, which means that A and B are perpendicular or approximately perpendicular, and the angle between A and B can be between 80 degrees and 100 degrees. This embodiment uses directional terms such as "top", "bottom", "left", "right", "front" and "back" to describe the foldable electronic device 1. The orientation is mainly based on the position of the foldable terminal in the attached Figure 4The display directions are explained in the figure, with the positive direction of the Y axis being the "top", the negative direction of the Y axis being the "bottom", the positive direction of the X axis being the "left", the negative direction of the X axis being the "right", the positive direction of the Z axis being the "front", and the negative direction of the Z axis being the "back".

[0123] Please also read Figure 2 and Figure 4 , the first shell 20 and the second shell 30 rotate relative to each other through the folding mechanism 10, and the first shell 20 and the second shell 30 move away from each other to drive the flexible screen 40 to unfold, so that the foldable electronic device 1 is unfolded to a semi-expanded state. When the foldable electronic device 1 is in the semi-expanded state, the first shell 20 and the second shell 30 unfold to an angle of α, the first part 41 and the second part 42 unfold relative to each other, and drive the foldable part 43 to unfold. At this time, the angle between the first part 41 and the second part 42 is α.

[0124] Please also read Figure 3 and Figure 4 , the first shell 20 and the second shell 30 rotate relative to each other through the folding mechanism 10, the first shell 20 and the second shell 30 can adopt the same structure, and the first shell 20 and the second shell 30 can be arranged in mirror symmetry with respect to the folding mechanism 10. The first shell 20 and the second shell 30 are relatively far away from each other to drive the flexible screen 40 to further unfold until the foldable electronic device 1 is flattened. When the foldable electronic device 1 is in a flattened state, the angle between the first shell 20 and the second shell 30 is β. The foldable part 43 is unfolded, and the first part 41 and the second part 42 are relatively unfolded. At this time, the angles between the first part 41, the second part 42 and the foldable part 43 are all β, and the flexible screen 40 has a large display area, realizing a large screen display of the foldable electronic device 1, and improving the user experience. It should be noted that the angle α and the angle β are both the angles between the first shell 20 and the second shell 30, which are only used to distinguish the different angles between the first shell 20 and the second shell 30 of the foldable electronic device 1 in different states. Among them, the angle α refers to the angle between the first shell 20 and the second shell 30 when the foldable electronic device 1 is in a semi-expanded state; the angle β refers to the angle between the first shell 20 and the second shell 30 when the foldable electronic device 1 is in an expanded state.

[0125] It should be understood that the foldable electronic device 1 shown in the embodiment of the present application is folded inwardly, and the flexible screen 40 of the foldable electronic device 1 in the folded state is located on the inner side of the folding mechanism 10. In some other embodiments, the foldable electronic device 1 can also be folded outwardly, and in this case, the flexible screen 40 of the foldable electronic device 1 in the folded state is located on the outer side of the folding mechanism 10.

[0126] like Figure 5 and Figure 6 As shown, the folding mechanism 10 is located between the first shell 20 and the second shell 30, and the folding mechanism 10 is connected to the first shell 20 and the second shell 30 respectively. Figure 7 As shown, the folding mechanism 10 is connected to door panels on both sides in the width direction, and the two door panels are connected to the first shell 20 and the second shell 30 respectively. The first shell 20 is connected to the folding mechanism 10 through one of the door panels, and the second shell 30 is connected to the folding mechanism 10 through the other door panel. Figure 8 As shown, the folding mechanism 10 includes a base 100, a main swing arm 210 and an auxiliary swing arm 220. The main swing arm 210 is installed on the base 100, and the main swing arm 210 can rotate relative to the base 100. The main swing arm 210 can be connected to the door panel. In the folding mechanism 10, the main swing arms 210 can be arranged in groups, and each group includes two main swing arms 210. The two main swing arms 210 are respectively installed on both sides of the width direction of the base 100, that is, the two main swing arms 210 are respectively installed on the left and right sides of the base 100. In the length direction of the base 100, one or more groups of main swing arms 210 can be provided. Figure 8 There are three groups of main swing arms 210. The number of main swing arms 210 can be specifically set according to the length of the base 100. If the length of the base 100 is longer, more groups of main swing arms 210 can be set. The auxiliary swing arms 220 can be arranged in groups, and each group includes two auxiliary swing arms 220. The two auxiliary swing arms 220 are respectively installed on both sides of the width direction of the base 100. A synchronization mechanism and / or a damping mechanism can be provided between the two auxiliary swing arms 220 in the same group. The main swing arm 210 and the auxiliary swing arm 220 that are located on the same side of the width direction of the base 100 and are adjacent are transmission connected. Figure 8 In the embodiment, three groups of main swing arms 210 are provided, and three groups of auxiliary swing arms 220 are provided, and the main swing arms 210 and the auxiliary swing arms 220 are transmission connected in a one-to-one correspondence.

[0127] First embodiment

[0128] like Figures 9 to 11 As shown, the folding mechanism 10 provided in this embodiment includes a base 100 and a first swing arm 300. The first swing arm 300 can be used as a main swing arm 210 in the folding mechanism 10, and can also be used as a secondary swing arm 220 in the folding mechanism 10. The first swing arms 300 are arranged in groups on the base 100, and each group of two first swing arms 300 are symmetrically arranged relative to the base 100. For ease of description, the first swing arm 300 is taken as the main swing arm 210, and one of the first swing arms 300 is taken as an example to further describe the specific structures of the subsequent base 100 and the first swing arms 300.

[0129] Fig. 9 is a schematic structural diagram of the folding mechanism 10 in an unfolded state, Fig.10is a schematic diagram of the structure of the folding mechanism 10 when it is in a folded state, Fig.11 : is an exploded view of the parts of the folding mechanism 10. In this embodiment, the folding mechanism 10 includes a base 100 and a first swing arm 300, and the first swing arm 300 can rotate relative to the base 100. The base 100 has a first slide groove surface 111 and a second slide groove surface 112, both of which are arc-shaped surfaces and are coaxially arranged, and the first slide groove surface 111 and the second slide groove surface 112 are spaced apart along the axial direction of the first slide groove surface 111, and the radius of the second slide groove surface 112 is greater than the radius of the first slide groove surface 111. The first swing arm 300 has a first surface and a second surface that are arranged opposite to each other. The first surface has a first mating surface 311 and a second mating surface 312. The first mating surface 311 and the second mating surface 312 are both arcuate surfaces. The first mating surface 311 fits and slides with the first slide groove surface 111, and the second mating surface 312 fits and slides with the second slide groove surface 112. The distance between the axis of the first surface and the first mating surface 311 is smaller than the distance between the axis of the second surface and the first mating surface 311. It is worth noting that the first mating surface 311 and the second mating surface 312 are both arcuate surfaces that bulge toward the rear side, or in other words, the first mating surface 311 and the second mating surface 312 are both arcuate surfaces that bulge from the first surface to the second surface. The bulging direction of the first slide groove surface 111 is the same as that of the first mating surface 311, and the bulging direction of the second slide groove surface 112 is the same as that of the second mating surface 312.

[0130] In this embodiment, the axial direction of the first slide groove surface 111, the axial direction of the second slide groove surface 112, the axial direction of the first mating surface 311, and the axial direction of the second mating surface 312 are all the length directions of the folding mechanism 10, that is, the Y direction.

[0131] Fig.12 is a top view of the folding mechanism 10 in a folded state, Fig.13 and Fig.14 Both Fig.12 The cross-sectional view at A1-A1 in the figure, Fig.15 and Fig.16 Both Fig.12 The cross-sectional view at B1-B1 in FIG. Fig.13 and Fig.14 It can be seen that the contact between the second slide groove surface 112 and the second matching surface 312 is Fig.15 and Fig.16The contact point between the first slide groove surface 111 and the first mating surface 311 can be seen. Since the first slide groove surface 111 and the second slide groove surface 112 are coaxially arranged, in the section perpendicular to the axis of the first slide groove surface 111, the center of the first slide groove surface 111 coincides with the center of the second slide groove surface 112, and the radius of the first slide groove surface 111 is smaller than the radius of the second slide groove surface 112, so within the same center angle, the arc length of the second slide groove surface 112 is greater than the arc length of the first slide groove surface 111. When the folding mechanism 10 is in a folded state, when the center angle corresponding to the area in contact with the first mating surface 311 in the first slide groove surface 111 is the same as the center angle corresponding to the area in contact with the second mating surface 312 in the second slide groove surface 112, the arc length of the area in contact with the second mating surface 312 in the second slide groove surface 112 is greater than the arc length of the area in contact with the first mating surface 311 in the first slide groove surface 111. Comparison Fig.14 and Fig.16 It can be seen that, when the thickness of the base 100 is constant, the smaller the radius of the slide groove surface, the smaller the thickness required for the structure of the slide groove surface. Therefore, the thickness of the base 100 is relatively greater behind the area where the first matching surface 311 is provided with the first swing arm 300, and the thickness of the base 100 is relatively smaller behind the area where the second matching surface 312 is provided with the first swing arm 300. Therefore, by providing the first slide groove surface 111 and the second slide groove surface 112 on the base 100, and providing the first matching surface 311 and the second matching surface 312 on the first swing arm 300, the arc length of the contact surface between the first swing arm 300 and the base 100 in the circumferential direction is increased, and the structural strength of the base 100 is relatively strong, thereby reducing the problem of the first swing arm 300 shaking or stuck relative to the base 100, and improving the stability of the folding mechanism 10 in use. The folding mechanism 10 described above particularly improves the stability between the first swing arm 300 and the base 100 when the folding mechanism 10 is in the folded state.

[0132] In some embodiments, Fig.11 , Fig.14 and Fig.16As shown, the base 100 includes a first substrate 110 and a second substrate 120. In the thickness direction of the folding mechanism 10, or in other words, in the thickness direction of the second substrate 120 (or the thickness direction of the first substrate 110), the first substrate 110 and the second substrate 120 are arranged in sequence. Specifically, the first substrate 110 is located at the front side of the second substrate 120. When the folding mechanism 10 is applied to the foldable electronic device 1, the distance between the first substrate 110 and the flexible screen 40 is closer, and the distance between the second substrate 120 and the flexible screen 40 is farther. The first slide groove surface 111 and the second slide groove surface 112 are both arranged on the first substrate 110. In this arrangement, the split arrangement of the first substrate 110 and the second substrate 120 is conducive to the production and processing of the first slide groove surface 111 and the second slide groove surface 112. The first base 110 and the second base 120 are manufactured separately and connected together during the assembly process, so that the part of the first swing arm 300 provided with the first mating surface 311 and the second mating surface 312 is located between the first base 110 and the second base 120. A first slide groove and a second slide groove are formed between the first base 110 and the second base 120, the first slide groove surface 111 is the front side surface of the first slide groove, and the second slide groove surface 112 is the front side surface of the second slide groove. The area of ​​the first surface of the first swing arm 300 that fits with the first slide groove surface 111 is the first mating surface 311, and the area of ​​the first surface that fits with the first slide groove surface 111 is the second mating surface 312. The second surface fits with the rear side surface of the first slide groove and the rear side surface of the second slide groove, respectively, so that the contact area with the base 100 is larger during the rotation of the first swing arm 300. Comparison Fig.14 and Fig.16 It can be seen that the thickness of the area of ​​the second base 100 opposite to the first slide groove surface 111 is greater than that of the area opposite to the second slide groove surface 112 , so the structural strength of the area of ​​the second base 100 opposite to the first slide groove surface 111 is greater.

[0133] like Fig.11 and Fig.17 As shown, in some embodiments, one of the first substrate 110 and the second substrate 120 is provided with a limiting post 117, and the other is provided with a limiting hole 121, and the limiting post 117 is inserted into the limiting hole 121. Fig.11 and Fig.17In the embodiment, a limiting column 117 is provided at the rear side of the first substrate 110, and a limiting hole 121 is provided through the second substrate 120 along the thickness direction. The limiting column 117 can be inserted into the limiting hole 121 to limit the first substrate 110 and the second substrate 120. The first substrate 110 and the second substrate 120 can be connected by bonding, welding, bolting, etc. Before the first substrate 110 and the second substrate 120 are fixedly connected, the limiting column 117 can be inserted into the limiting hole 121 to perform initial positioning of the first substrate 110 and the second substrate 120.

[0134] like Fig.11 , Fig.13 and Fig.14 As shown, in some embodiments, the first swing arm 300 is provided with a first through hole 330, the first through hole 330 penetrates the first swing arm 300 along the radial direction of the second mating surface 312, the first swing arm 300 has a linkage portion 320 away from the base 100, and the second mating surface 312 is at least located on one side of the first through hole 330 away from the linkage portion 320. That is to say, in the first swing arm 300, in the width direction of the base 100, the linkage portion 320 of the first swing arm 300 is located on one side of the first through hole 330, and the structure of the first swing arm 300 located on the other side of the first through hole 330 is provided with the second mating surface 312, and the second mating surface 312 may be provided only on one side of the first through hole 330 away from the linkage portion 320, or may be provided on one side of the first through hole 330 away from the linkage portion 320 and on one side of the first through hole 330 close to the linkage portion 320.

[0135] Since the first through hole 330 is provided on the first swing arm 300, when the folding mechanism 10 is in the fully unfolded state, the maximum thickness of the first swing arm 300 is smaller, so as to be adapted to a thinner foldable electronic device 1. Since the second mating surface 312 is provided at least on the side of the first through hole 330 in the first swing arm 300 away from the linkage portion 320, the second mating surface 312 is located in the area of ​​the first swing arm 300 closer to the center in the width direction of the base 100, so that when the first swing arm 300 rotates to the folded state, the second mating surface 312 is still in contact with the second slide groove surface 112. When the second mating surface 312 is provided in the area of ​​the first swing arm 300 located in the area away from the linkage portion 320 and the area of ​​the first through hole 330 close to the linkage portion 320, respectively, when the folding mechanism 10 is in the fully unfolded state, the second mating surfaces 312 located on both sides of the first through hole 330 can contact with the second slide groove surface 112, so that the contact area between the first swing arm 300 and the base 100 is larger. When the folding mechanism 10 is in the folded state, the second mating surface 312 located at the side of the first through hole 330 close to the linkage portion 320 moves to the outside of the base 100, while the second mating surface 312 located at the side of the first through hole 330 away from the linkage portion 320 is still in contact with the second slide groove surface 112.

[0136] In some embodiments, the number of first mating surfaces 311 is at least two, and the plurality of first mating surfaces 311 are spaced apart along the axis of the first mating surfaces 311, and at least one second mating surface 312 is disposed between adjacent first mating surfaces 311. The number of first slide groove surfaces 111 may be the same as the number of first mating surfaces 311, and the number of second slide groove surfaces 112 may be less than or equal to the number of second mating surfaces 312. Fig.18 In the structure corresponding to the first swing arm 300 in the base 100, the number of the first mating surfaces 311 is two, the number of the second mating surfaces 312 is two, and the two second mating surfaces 312 are respectively located on both sides of the first through hole 330 in the width direction. Fig.17As shown, the number of the first chute surfaces 111 is two, the number of the second chute surfaces 112 is one, and the two second matching surfaces 312 are both slidably matched with the second chute surface 112. It is worth noting that the number of structures matching the first swing arms 300 provided in the base 100 mentioned in this article is only illustrated by taking the position corresponding to one of the first swing arms 300 as an example. Exemplarily, since a base 100 can be installed with multiple first swing arms 300, the number of the above-mentioned first chute surfaces 111 refers to the number of positions matching with one of the first swing arms 300, rather than the total number of the first chute surfaces 111 provided on the base 100. For example, two first swing arms 300 are installed on the base 100, and two first chute surfaces 111 are provided corresponding to one swing arm, then a total of four first chute surfaces 111 are provided on the base 100 corresponding to the two first swing arms 300. In some embodiments, the first swing arm 300 has a connected rotating part 340 and a linkage part 320, the rotating part 340 has a first matching part 341 and a second matching part 342, the number of the first matching parts 341 is multiple, and a second matching part 342 is provided between each adjacent first matching part 341, each first matching part 341 is connected to the linkage part 320, and the second matching part 342 is connected to at least one first matching part 341, the first matching part 341 is provided with a first matching surface 311, and the second matching part 342 is provided with a second matching surface 312. The rotating part 340 and the linkage part 320 can be an integral structure, and the first matching part 341 and the second matching part 342 in the rotating part 340 can be an integral structure, that is, the first swing arm 300 is an integral structure as a whole, which can be manufactured by injection molding, cutting, casting and other processes.

[0137] In some embodiments, a second matching portion 342 is disposed between each two adjacent first matching portions 341, and in the axial direction of the first matching surface 311, the second matching portion 342 is connected to the two adjacent first matching portions 341. Fig.18 and Fig.19 As shown, in a specific example, there are two first matching parts 341, one second matching part 342, the second matching part 342 is connected between the two first matching parts 341, the two first matching parts 341 are respectively connected to one end of the linkage part 320 close to the base 100, and the two first matching parts 341 are arranged along the length direction of the base 100, the second matching part 342 and the linkage part 320 are arranged at intervals in the width direction of the base 100, and the first through hole 330 is formed between the two first matching parts 341, the second matching part 342 and the linkage part 320. The first surfaces of the two first matching parts 341 are respectively provided with first matching surfaces 311, the first surface of the second matching part 342 is provided with a second matching surface 312, and the second matching surface 312 is also provided on the side of the linkage part 320 close to the second matching part 342.

[0138] like Fig.17 and Fig. 20 As shown, in some embodiments, the first substrate 110 includes a main body 118, a slide groove body 119, a support body 114 and a second connecting body 116, and the main body 118 is connected to the second substrate 120; in the axial direction of the first slide groove surface 111, the two sides of the main body 118 are respectively connected with the support body 114, and the two sides of the slide groove body 119 are respectively provided with the support body 114 and the second connecting body 116, and the two ends of the slide groove body 119 are respectively connected to the corresponding support body 114 through the corresponding second connecting body 116.

[0139] In this embodiment, the first base 110 includes a main body 118 and two supporting bodies 114. The two supporting bodies 114 are respectively located on both sides of the main body 118 in the axial direction of the first slide groove surface 111 (or in the length direction of the base 100). The two supporting bodies 114 are connected with the main body 118 to form an I-shaped structure. Between the two supporting bodies 114, a slide groove body 119 is provided corresponding to one first swing arm 300. Since the two supporting bodies 114 are connected with the main body 118 to form an I-shaped structure, it is convenient to respectively provide the slide groove bodies 119 on both sides of the main body 118 in the width direction, so as to facilitate the connection with the two first swing arms 300.

[0140] The chute body 119 is connected to the two support bodies 114 via the second connecting body 116. The second chute surface 112 can be arranged on the side of the chute body 119 facing the second base body 120, and the first chute surface 111 can be arranged on the side of the second connecting body 116 facing the second base body 120, or on the side of the support body 114 facing the second base body 120.

[0141] In some embodiments, Fig.11 and Fig.13As shown, the base 100 is provided with a fourth slot surface 122, and the second surface is provided with a fourth matching surface 314. The fourth slot surface 122 and the fourth matching surface 314 are both arc-shaped surfaces. The fourth slot surface 122 is coaxially arranged with the first slot surface 111, and the fourth matching surface 314 is fitted and slidably matched with the fourth slot surface 122. The fourth slot surface 122 can be spaced apart from the first slot surface 111 in the thickness direction of the base 100, that is, the first slot surface 111 and the fourth slot surface 122 can be in contact with the two opposite surfaces of the first swing arm 300 respectively, or the fourth slot surface 122 can be spaced apart from the second slot surface 112 in the thickness direction of the base 100; or the fourth slot surface 122 can be spaced apart from the second slot surface 112 at the places where the first slot surface 111 and the second slot surface 112 are opposite; or the fourth slot surface 122 can be arranged at a place that is not opposite to the first slot surface 111 and the second slot surface 112. When the base 100 includes the first base body 110 and the second base body 120 , the fourth slide groove surface 122 is disposed on a side of the second base body 120 facing the first base body 110 , that is, the front side of the second base body 120 .

[0142] like Fig.11 , Fig.19 and Fig.21 As shown, in some embodiments, the base 100 is provided with a stop groove 130, the stop groove 130 has a stop surface 131, and the second surface has a stop portion 360, the stop portion 360 is slidably assembled in the stop groove 130, and the stop portion 360 contacts the stop surface 131 when the folding mechanism 10 is in a folded state.

[0143] In this arrangement, the stop portion 360 and the stop surface 131 can limit the rotation range of the first swing arm 300 relative to the base 100, that is, limit the folding angle of the folding mechanism 10, so as to facilitate the control of the angle of the folding mechanism 10 in the folded state.

[0144] Second embodiment

[0145] This embodiment provides a folding mechanism 10, which is a variation of the folding mechanism 10 in the first embodiment. Compared with the folding mechanism 10 in the first embodiment, the folding mechanism 10 provided in this embodiment is additionally provided with a third slide groove surface 113 and a third matching surface 313.

[0146] like Figures 22 to 33 As shown, Fig. 22 This is a schematic diagram of the exploded parts of the folding mechanism 10 provided in this embodiment. Fig.23 A schematic diagram of the unfolded state of the folding mechanism 10 provided in this embodiment; Fig.24 A schematic diagram of the folding state of the folding mechanism 10 provided in this embodiment; Fig.25 A top view of the folding mechanism 10 provided in this embodiment; Fig.26 for Fig.25 Sectional view at A2-A2; Fig. 27 for Fig.25 Sectional view at B2-B2; Fig.28 for Fig.25 Sectional view at C2-C2; Fig.29 for Fig.25 A cross-sectional view at D2-D2 in FIG. Fig.30 and Fig.31 They are schematic diagrams of the front and rear sides of the first swing arm 300; Fig.32 and Fig.33 Both are schematic diagrams of the front and rear sides of the first base 110 in the base 100 .

[0147] In this embodiment, the base 100 has a third slide groove surface 113, which is an arc surface, and is coaxially arranged with the first slide groove surface 111, and the radius of the third slide groove surface 113 is smaller than the radius of the first slide groove surface 111; the first surface has a third matching surface 313, which is an arc surface, and the third matching surface 313 is in contact with the third slide groove surface 113 and slides with the third slide groove surface 113. In this arrangement, when the folding mechanism 10 is in the folded state, the first swing arm 300 and the base 100 are also in contact through the third slide groove surface 113 and the third matching surface 313, the contact surface is further increased, and the stability is further improved.

[0148] Fig.26 A schematic diagram showing the relative positions of the first matching surface 311 and the first sliding groove surface 111 when the folding mechanism 10 is in a folded state; Fig. 27 A schematic diagram showing the relative positions of the second matching surface 312 and the second slide groove surface 112 when the folding mechanism 10 is in a folded state; Fig.28 FIG. 1 is a schematic diagram showing the relative positions of the third matching surface 313 and the third sliding groove surface 113 when the folding mechanism 10 is in the folded state. Fig.26 , Fig. 27 and Fig.28 It can be seen that when the folding mechanism 10 is in the folded state, in the circumferential direction, the length of the contact area between the first mating surface 311 and the first slide groove surface 111 is less than the length of the contact area between the second mating surface 312 and the second slide groove surface 112, but greater than the length of the contact area between the third mating surface 313 and the third slide groove surface 113. The base 100 includes a first base body 110 and a second base body 120, the first slide groove surface 111, the second slide groove surface 112 and the third slide groove surface 113 are all arranged on the side of the first base body 110 facing the second base body 120, and the thickness of the area of ​​the second base body 120 opposite to the first slide groove surface 111 is greater than the thickness of the area opposite to the second slide groove surface 112, but less than the thickness of the area opposite to the third slide groove surface 113.

[0149] like Fig.30 and Fig.31 As shown, in a specific example, in the first swing arm 300, the number of the first slide groove surface 111, the second slide groove surface 112 and the third slide groove surface 113 are all two, the two third slide groove surfaces 113 are spaced apart in the axial direction of the first slide groove surface 111, the two first slide groove surfaces 111 are both located between the two third slide groove surfaces 113, and the two first slide groove surfaces 111 are spaced apart in the axial direction of the first slide groove surfaces 111, the two second slide groove surfaces 112 are located between the two first slide groove surfaces 111, and the two second slide groove surfaces 112 are spaced apart in the axial direction perpendicular to the first slide groove surfaces 111, or in other words, in the width direction of the base 100, one of the second slide groove surfaces 112 is located on the side away from the base 100, and the other second slide groove surface 112 is located on the side close to the base 100.

[0150] In the first swing arm 300, a second matching portion 342 is arranged between the two first matching portions 341, a second matching surface 312 is arranged on the second matching portion 342, and a first matching surface 311 and a third matching surface 313 are arranged on the first matching portion 341. The first base 110 includes a main body 118, a slide groove body 119, a support body 114 and a second connecting body 116, and both ends of the slide groove body 119 are connected to the corresponding support body 114 through the corresponding second connecting body 116. The second slide groove surface 112 and the first slide groove surface 111 are both arranged on the slide groove body 119, and the number of the first slide groove surface 111 is two, and the two second slide groove surfaces 112 are respectively located on both sides of the first slide groove surface 111 in the axial direction, and the two second connecting bodies 116 are both provided with a third slide groove surface 113.

[0151] like Fig. 22 , Fig.29 and Fig.30 As shown, a stopper 360 is provided on the second surface of the first swing arm 300, and a stopper groove 130 is provided on the side of the second base 120 facing the first base 110, and the stopper groove 130 has a stopper surface 131. The stopper 360 is slidably assembled in the stopper groove 130. When the first swing arm 300 rotates from the unfolded state to the folded state relative to the base 100, the stopper 360 slides in the stopper groove 130 toward the stopper surface 131. When the folding mechanism 10 is in the folded state, as shown in FIG. Fig.29 As shown, the stopper 360 contacts the stopper surface 131 , and the stopper surface 131 stops the stopper 360 in the folded state, thereby stopping the first swing arm 300 in the folded state.

[0152] Third embodiment

[0153] like Figures 34 to 45As shown, this embodiment provides a folding mechanism 10, which is a variation of the folding mechanism 10 in the second embodiment. Compared with the folding mechanism 10 in the second embodiment, in the folding mechanism 10 provided in this embodiment, the number of the two second matching parts 342 is two, and there is a first gap 350 between the two second matching parts 342. The first base 110 also includes a first connecting body 115, which is connected to the main body 118 and the slide groove body 119 respectively.

[0154] Fig.34 This is a schematic diagram of the exploded parts of the folding mechanism 10 provided in this embodiment. Fig.35 A schematic diagram of the unfolded state of the folding mechanism 10 provided in this embodiment; Fig.36 A schematic diagram of the folding state of the folding mechanism 10 provided in this embodiment;

[0155] Fig.37 A top view of the folding mechanism 10 provided in this embodiment; Fig.38 for Fig.37 A cross-sectional view at A3-A3 in the middle; Fig.39 for Fig.37 Sectional view at B3-B3; Fig.40 for Fig.37 Sectional view at C3-C3; Fig.41 for Fig.37 A cross-sectional view at D3-D3 in FIG. Fig.42 and Fig.43 They are schematic diagrams of the front and rear sides of the first swing arm 300; Fig.44 and Fig.45 Both are schematic diagrams of the front and rear sides of the first base 110 in the base 100 .

[0156] In this embodiment, the first swing arm 300 has a first mating surface 311, a second mating surface 312 and a third mating surface 313, and the base 100 is provided with a first slide groove surface 111, a second slide groove surface 112 and a third slide groove surface 113. Fig.38 , Fig.39 and Fig.40 It can be seen that when the folding mechanism 10 is in the folded state, in the circumferential direction, the length of the contact area between the first mating surface 311 and the first slide groove surface 111 is less than the length of the contact area between the second mating surface 312 and the second slide groove surface 112, but greater than the length of the contact area between the third mating surface 313 and the third slide groove surface 113. The base 100 includes a first base body 110 and a second base body 120, the first slide groove surface 111, the second slide groove surface 112 and the third slide groove surface 113 are all arranged on the side of the first base body 110 facing the second base body 120, and the thickness of the area of ​​the second base body 120 opposite to the first slide groove surface 111 is greater than the thickness of the area opposite to the second slide groove surface 112, but less than the thickness of the area opposite to the third slide groove surface 113.

[0157] like Fig.41 As shown, a stopper 360 is provided on the second surface of the first swing arm 300, and a stopper groove 130 is provided on the side of the second base 120 facing the first base 110, and the stopper groove 130 has a stopper surface 131. The stopper 360 is slidably assembled in the stopper groove 130. When the first swing arm 300 rotates from the unfolded state to the folded state relative to the base 100, the stopper 360 slides in the stopper groove 130 toward the stopper surface 131. When the folding mechanism 10 is in the folded state, as shown in FIG. Fig.41 As shown, the stopper 360 contacts the stopper surface 131 , and the stopper surface 131 stops the stopper 360 in the folded state, thereby stopping the first swing arm 300 in the folded state.

[0158] like Fig.42 and Fig.43 As shown, the first swing arm 300 includes a first matching portion 341 and a second matching portion 342 , two second matching portions 342 are arranged between two adjacent first matching portions 341 , the two second matching portions 342 are respectively connected to the adjacent first matching portions 341 , and a first gap 350 is provided between the two second matching portions 342 .

[0159] like Fig.44 and Fig.45 As shown, the first substrate 110 includes a main body 118, a slide groove body 119, a support body 114, a first connecting body 115 and a second connecting body 116. The number of the supporting bodies 114 is two, and the two supporting bodies 114 are located on both sides of the main body 118 in the length direction. The slide groove body 119 is located on one side of the main body 118 in the width direction and is located between the two supporting bodies 114. One side of the width direction of the slide groove body 119 is connected to the main body 118 through the first connecting body 115. The second connecting body 116 is respectively provided on one side of the length direction of the slide groove body 119, and the two sides of the slide groove body 119 are respectively connected to the corresponding supporting body 114 through the corresponding second connecting body 116.

[0160] like Fig.34 and Fig.35 As shown, after the first swing arm 300 is installed on the base 100, the first connector 115 is located in the first gap 350, and the second matching portion 342 is located on both sides of the first connector 115. In this arrangement, the width direction of the chute body 119 is connected to the main body 118 through the first connector 115, and the length direction of the chute body 119 is connected to the main body 118 through the second connector 116 and the support body 114, so the connection strength is greater, the connection stability is stronger, and the structural strength is stronger. The main body 118, the chute body 119, the support body 114, the first connector 115 and the second connector 116 can be set as an integrated structure, that is, the first base 110 is an integrated structure, which is manufactured by an integrated molding process.

[0161] like Fig.43 As shown, in a specific embodiment, the first swing arm 300 includes a linkage portion 320 and a rotating portion 340, and the rotating portion 340 includes two first matching portions 341 and two second matching portions 342. The two first matching portions 341 are arranged at intervals in the axial direction of the first matching surface 311, and the two first matching portions 341 are connected to the linkage portion 320, and the two second matching portions 342 are located between the two first matching portions 341. The two first matching portions 341 and the two second matching portions 342 are connected in a one-to-one correspondence, and there is a first gap between the two second matching portions 342. The two second matching portions 342 are provided with a second matching surface 312, and the two first matching portions 341 are provided with a first matching surface 311 and a third matching surface 313, and the first matching surface 311 is located between the third matching surface 313 and the second matching surface 312. In the axial direction of the first matching surface 311, the length of the third matching surface 313 is greater than the length of the first matching surface 311, and greater than the length of the second matching surface 312.

[0162] Fourth embodiment

[0163] like Figures 46 to 57 As shown, this embodiment provides a folding mechanism 10, which is a variation of the folding mechanism 10 in the third embodiment. Compared with the folding mechanism 10 in the third embodiment, in the folding mechanism 10 provided in this embodiment, the first base 110 does not include the second connecting body 116, and the slide groove body 119 is connected to the main body 118 through the first connecting body 115.

[0164] Fig.46 This is a schematic diagram of the exploded parts of the folding mechanism 10 provided in this embodiment. Fig.47 A schematic diagram of the unfolded state of the folding mechanism 10 provided in this embodiment; Fig.48 A schematic diagram of the folding state of the folding mechanism 10 provided in this embodiment;

[0165] Fig.49 A top view of the folding mechanism 10 provided in this embodiment; Fig.50 for Fig.49 Sectional view at A4-A4; Fig.51 for Fig.49 A cross-sectional view at B4-B4; Fig.52 for Fig.49 A cross-sectional view at C4-C4; Fig.53 for Fig.49 A cross-sectional view at D4-D4 in FIG. Fig.54 and Fig.55 They are schematic diagrams of the front and rear sides of the first swing arm 300; Fig.56 and Fig.57Both are schematic diagrams of the front and rear sides of the first base 110 in the base 100 .

[0166] In this embodiment, the first substrate 110 includes a main body 118, a slide groove body 119 and a first connecting body 115. The main body 118 is connected to the second substrate 120. In the width direction of the first substrate 110, the slide groove body 119 and the main body 118 are respectively connected to the two sides of the first connecting body 115, and the second slide groove surface 112 is located on the side of the slide groove body 119 facing the second substrate 120.

[0167] In this arrangement, the slide groove body 119 is connected to the main body 118 on one side in the width direction, that is, the thickness of the first connecting body 115 is not affected by the setting position of the first slide groove surface 111 or the second slide groove surface 112, so that the thickness of the first connecting body 115 can be set larger and the connection strength is stronger.

[0168] Fifth embodiment

[0169] like Figures 58 to 72 As shown, this embodiment provides a folding mechanism 10, which is a variation of the folding mechanism 10 in the third embodiment. Compared with the folding mechanism 10 in the third embodiment, in the folding mechanism 10 provided in this embodiment, the first base 110 does not include the second connecting body 116, and the slide groove body 119 is connected to the main body 118 through the first connecting body 115.

[0170] Fig.58 This is a schematic diagram of the exploded parts of the folding mechanism 10 provided in this embodiment. Fig.59 A schematic diagram of the unfolded state of the folding mechanism 10 provided in this embodiment; Fig.60 A schematic diagram of the folding state of the folding mechanism 10 provided in this embodiment;

[0171] Fig.61 A top view of the folding mechanism 10 provided in this embodiment when it is in an unfolded state; Fig.62 A top view of the folding mechanism 10 provided in this embodiment in a folded state; Fig.63 for Fig.62 Sectional view at A5-A5; Fig.64 for Fig.62 Sectional view at B5-B5; Fig.65 for Fig.62 A cross-sectional view at C5-C5; Fig.66 for Fig.62 A cross-sectional view at D5-D5 in FIG. Fig.67 is a schematic diagram of the first swing arm 300 on one side of the second surface, Fig.68 is a schematic diagram of the first swing arm 300 on one side of the first surface, Fig.69 is a top view of the first swing arm 300 on one side of the second surface, Fig.70is a schematic diagram of the rear side of the first substrate 110, Fig.71 is a schematic diagram of the front side of the first substrate 110, Fig.72 1 is a rear plan view of the first substrate 110 .

[0172] In this embodiment, the folding mechanism 10 includes a first swing arm 300 and a base 100. The first swing arm 300 is rotatably mounted on the base 100. The base 100 includes a first base 110 and a second base 120. The first base 110 is arranged at the front side of the second base 120. The first swing arm 300 includes a linkage part 320 and a rotation part 340. The linkage part 320 is connected to the rotation part 340. The rotation part 340 is located between the first base 110 and the second base 120. The first swing arm 300 can be arranged on both sides of the base 100 in the width direction. Figure 58 to Figure 66 In both of the figures, schematic diagrams are shown in which first swing arms 300 are respectively installed on both sides of the width direction of the base 100. The two first swing arms 300 have the same structure and are symmetrically arranged. The two symmetrically arranged first swing arms 300 form a group, and multiple groups of first swing arms 300 may be arranged in the length direction of the base 100. In order to facilitate the description of the matching relationship between the first swing arms 300 and the base 100, the following text takes one of the first swing arms 300 as an example to further describe the structure of the first swing arm 300 and the structure on the base 100 corresponding to the first swing arm 300.

[0173] like Fig.58 , Fig.59 , Figure 70 to Figure 72As shown, a first slide groove surface 111, a second slide groove surface 112 and a third slide groove surface 113 are arranged on the base 100, and the first slide groove surface 111, the second slide groove surface 112 and the third slide groove surface 113 are all arranged on the rear side of the first base 110, that is, the side of the first base 110 facing the second base 120. The first base 110 includes a main body 118, a support body 114, a slide groove body 119 and a first connecting body 115, and the length direction of the main body 118 is the same as the length direction of the first base 110. There are two support bodies 114, and the two support bodies 114 are respectively connected to the main body 118, and the two support bodies 114 are arranged at intervals in the length direction of the main body 118. The chute body 119 is located between the two support bodies 114 and on one side of the width direction of the main body 118. The chute body 119 and the main body 118 are connected by a first connector 115. The first connector 115 is located on one side of the chute body 119 in the width direction of the main body 118. In this arrangement, the chute body 119 and the support body 114 are spaced apart. For ease of reference, the space between the chute body 119 and the support body 114 is referred to as the second gap. The first chute surface 111 and the second chute surface 112 are both arranged on the side of the chute body 119 facing the second base body 120, and the third chute surface 113 is arranged on the side of the support body 114 facing the second base body 120. A fourth slide groove surface 122 may also be provided on the base 100, and the fourth slide groove surface 122 is provided on the second base body 120. The fourth slide groove surface 122 may be provided on the second base body 120 at a position opposite to one or more of the first slide groove surface 111, the second slide groove surface 112 and the third slide groove surface 113, or may be provided at a position not opposite to the first slide groove surface 111, the second slide groove surface 112 and the third slide groove surface 113.

[0174] like Fig.58 and Fig.70 As shown, a limiting column 117 is provided on the rear side of the first substrate 110 , and a limiting hole 121 is provided through the second substrate 120 along the thickness direction. When the first substrate 110 is assembled to the second substrate 120 , the limiting column 117 is inserted into the limiting hole 121 .

[0175] like Fig.58 , Fig.59 , Figure 67 to Figure 69As shown, the first swing arm 300 includes a first mating surface 311, a second mating surface 312 and a third mating surface 313, and the first mating surface 311, the second mating surface 312 and the third mating surface 313 are all arranged on the first surface of the rotating part 340. In the first swing arm 300, the distance between the first surface and the axis of the first mating surface 311 is smaller than the distance between the second surface and the axis of the first mating surface 311, so the first surface is closer to the first substrate 110, and the second surface is closer to the second substrate 120. When the folding mechanism 10 is applied to the foldable electronic device 1, the first surface is closer to the flexible screen 40, and the second surface is farther away from the flexible screen 40.

[0176] In this embodiment, the rotating part 340 has a first matching part 341 and a second matching part 342. There are multiple first matching parts 341. Two second matching parts 342 are arranged between each two adjacent first matching parts 341. There is a first gap 350 between the two second matching parts 342. The first matching part 341 is connected to the linkage part 320, and the second matching part 342 is connected to the closest first matching part 341. The first matching surface 311 and the third matching surface 313 are arranged on the first matching part 341. Fig.68 As shown, in some embodiments, the third mating surface 313 and the first mating surface 311 are spaced apart in the axial direction of the first mating surface 311 , and the third mating surface 313 is located on a side of the first mating surface 311 away from the second mating surface 312 .

[0177] In this setting, the structural thickness between the third mating surface 313 and the first mating surface 311 is relatively large, which can improve the structural strength of the first swing arm 300. In this way, the folding mechanism 10 provided in this embodiment is suitable for a foldable electronic device 1 with a smaller thickness. After the thickness of the foldable electronic device 1 is thinned, the thickness of the base 100 is reduced, thereby reducing the thickness of the first base 110. Since the support body 114 and the slide groove body 119 are arranged at an interval, the interval between the support body 114 and the slide groove body 119 is called the second gap, so that the structure between the third mating surface 313 and the first mating surface 311 can extend into the second gap, so that the thickness of the first swing arm 300 in the area between the third mating surface 313 and the first mating surface 311 can be set thicker, and this part of the structure extends into the second gap, so that the total thickness of the folding mechanism 10 will not be increased additionally, and the structural strength of the first swing arm 300 is increased without increasing the thickness of the folding mechanism 10. Therefore, it is suitable for a foldable electronic device 1 with a smaller overall thickness.

[0178] There are multiple second mating surfaces 312, some of which are disposed on the second mating portion 342, and some of which are disposed on a side of the linkage portion 320 close to the rotating portion 340. Fig.68In the embodiment, there are two first matching parts 341. In the axial direction of the first matching surface 311, the two first matching parts 341 are arranged at intervals. Two second matching parts 342 are arranged between the two first matching parts 341. The two second matching parts 342 are connected to the two first matching parts 341 in a one-to-one correspondence. A first gap 350 is provided between the two second matching parts 342. A first through hole 330 is formed between the two first matching parts 341, the two second matching parts 342 and the linkage part 320. The second matching part 342 is connected to a side of the first matching part 341 away from the linkage part 320. The second matching part 342 and the linkage part 320 are respectively located on opposite sides of the first through hole 330. There are two first mating surfaces 311 and two third mating surfaces 313. Each first mating portion 341 is provided with a first mating surface 311 and a third mating surface 313. The first mating surfaces 311 and the third mating surfaces 313 are arranged at intervals. The first mating surface 311 is located on a side of the first mating portion 341 close to the second mating portion 342, and the third mating surface 313 is located on a side of the first mating portion 341 far from the second mating portion 342. There are three second mating surfaces 312, one of which is located on a side of the linkage portion 320 close to the second mating portion 342, and the other two second mating surfaces 312 are arranged on the second mating portion 342. One second mating surface is arranged on one second mating portion 342.

[0179] Compare Fig.63 , Fig.64 and Fig.66 It can be seen that when the folding mechanism 10 is in the folded state, in the circumferential direction, the contact area length between the first mating surface 311 and the first slide groove surface 111 is smaller than the contact area length between the second mating surface 312 and the second slide groove surface 112, but larger than the contact area length between the third mating surface 313 and the third slide groove surface 113.

[0180] The first mating surface 311, the second mating surface 312 and the third mating surface 313 are all located on the first surface of the first swing arm 300. Fig.65 and Fig.67 As shown, a fourth mating surface 314 is provided on the second surface of the first swing arm 300. Fig.58 As shown, a fourth slide groove surface 122 is provided on the second base body 120, and the fourth slide groove surface 122 is located on a side of the second base body 120 facing the first base body 110. The fourth matching surface 314 is provided at a position opposite to the fourth slide groove surface 122.

[0181] The second surface is also provided with a stopper 360, which is located on the side of the first matching portion 341 away from the linkage portion 320. The two first matching portions 341 are both provided with a stopper 360, and the stopper 360 is located on the side of the first matching portion 341 away from the second matching portion 342. A stopper groove 130 is provided in the second base 120, and a stopper surface 131 is provided in the stopper groove 130, such as Fig.66 As shown, when the folding mechanism 10 is in the folded state, the stopper 360 contacts the stopper surface 131 .

[0182] In a specific implementation, the fourth matching surface 314 is disposed on the second surface of the first matching portion 341 and is disposed adjacent to the stopping portion 360 .

[0183] In a specific embodiment, in a cross section perpendicular to the axial direction of the first mating surface 311, the arc length of the first mating surface 311 is greater than the arc length of the second mating surface 312, and the angle of the central angle corresponding to the first mating surface 311 is greater than the angle of the central angle corresponding to the second mating surface 312. In this arrangement, when the folding mechanism 10 is in a fully unfolded state, the arc length of the contact surface between the first mating surface 311 and the first slide groove surface 111 is greater than the arc length of the contact surface between the second mating surface 312 and the second slide groove surface 112. During the folding and unfolding process of the folding mechanism 10, the fit and sliding between the first mating surface 311 and the first slide groove surface 111 play a major guiding and stabilizing role in the rotation of the first swing arm 300 relative to the base 100, while the fit and sliding between the second mating surface 311 and the second slide groove surface 312 play an auxiliary role in the rotation of the first swing arm 300 relative to the base 100. When the folding mechanism 10 is in the folded state, the fit between the second mating surface 311 and the second slide groove surface 312 plays a more important role, which increases the overlap between the first swing arm 300 and the base 100 in the folded state, and to a certain extent reduces the jamming problem of the first swing arm 300 relative to the base 100 due to the small overlap.

[0184] The embodiments described above 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 aforementioned embodiments, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. An electronic device, characterized in that: include: Pedestal; A main swing arm, mounted on the base and rotatable relative to the base; The number of the main swing arms is multiple and they are arranged in groups, each group includes two main swing arms and they are respectively located on both sides of the width direction of the base; A secondary swing arm is mounted on the base and can rotate relative to the base; the number of the secondary swing arms is multiple and they are arranged in groups, each group includes two secondary swing arms and they are respectively located on both sides of the width direction of the base, and the main swing arm and the secondary swing arm that are located on the same side of the width direction of the base and adjacent to each other are transmission connected; A door panel is connected to the main swing arm.

2. The electronic device according to claim 1, wherein: A synchronization mechanism and / or a damping mechanism is arranged between the two auxiliary swing arms in the same group.

3. The electronic device according to claim 1, wherein: In the length direction of the base, at least three groups of main swing arms are provided, and at least three groups of auxiliary swing arms are provided.

4. A folding mechanism, characterized in that: include: A base having a first chute surface and a second chute surface, wherein the first chute surface and the second chute surface are both arc-shaped surfaces and are coaxially arranged, and the first chute surface and the second chute surface are spaced apart along the axial direction of the first chute surface, and the radius of the second chute surface is greater than the radius of the first chute surface; A first swing arm, the first swing arm has a first surface and a second surface arranged opposite to each other, the first surface has a first mating surface and a second mating surface, the first mating surface and the second mating surface are both arc-shaped surfaces, the first mating surface is in contact with and slidably fit against the first slide groove surface, the second mating surface is in contact with and slidably fit against the second slide groove surface, and the distance between the first surface and the axis of the first mating surface is smaller than the distance between the second surface and the axis of the first mating surface.

5. The folding mechanism according to claim 4, characterized in that: The number of the first mating surfaces is at least two, a plurality of the first mating surfaces are arranged at intervals along the axis of the first mating surfaces, and at least one second mating surface is arranged between adjacent first mating surfaces.

6. The folding mechanism according to claim 4, characterized in that: The first swing arm has a connected rotating part and a linkage part, the rotating part has a first matching part and a second matching part, the number of the first matching parts is multiple, a second matching part is arranged between each of the first matching parts, each of the first matching parts is connected to the linkage part, the second matching part is connected to at least one of the first matching parts, the first matching part is provided with the first matching surface, and the second matching part is provided with the second matching surface.

7. The folding mechanism according to claim 6, characterized in that: One second matching portion is disposed between each two adjacent first matching portions, and the second matching portion is connected to two adjacent first matching portions in the axial direction of the first matching surface.

8. The folding mechanism according to claim 6, characterized in that: Two second matching portions are arranged between two adjacent first matching portions, the two second matching portions are respectively connected to the adjacent first matching portions, and a first gap is provided between the two second matching portions.

9. The folding mechanism according to any one of claims 4 to 8, characterized in that: The first swing arm is provided with a first through hole, which penetrates the first swing arm along the radial direction of the second mating surface, the linkage part is located at one end of the first swing arm away from the base, and the second mating surface is at least located on one side of the first through hole away from the linkage part.

10. The folding mechanism according to any one of claims 4 to 8, characterized in that: The base has a third slide groove surface, which is an arc-shaped surface. The third slide groove surface is coaxially arranged with the first slide groove surface, and the radius of the third slide groove surface is smaller than the radius of the first slide groove surface; the first surface has a third mating surface, which is an arc-shaped surface, and the third mating surface is in contact with and slidably fits with the third slide groove surface.

11. The folding mechanism according to claim 10, characterized in that: The third mating surface is spaced apart from the first mating surface in the axial direction of the first mating surface, and the third mating surface is located on a side of the first mating surface away from the second mating surface.

12. The folding mechanism according to any one of claims 4 to 8, characterized in that: The base includes a first base and a second base, the first base is connected to one side of the second base in a thickness direction, and the first slide groove surface and the second slide groove surface are both arranged on the first base.

13. The folding mechanism according to claim 12, characterized in that: The first substrate includes a main body, a slide groove body and a first connecting body, the main body is connected to the second substrate, and in the width direction of the first substrate, the slide groove body and the main body are respectively connected to the two sides of the first connecting body, and the second slide groove surface is located on the side of the slide groove body facing the second substrate.

14. The folding mechanism according to claim 12, characterized in that: The first base includes a main body, a slide groove body, a support body and a second connecting body, and the main body is connected to the second base; in the axial direction of the first slide groove surface, the two sides of the main body are respectively connected to the support body, and the two sides of the slide groove body are respectively provided with the support body and the second connecting body, and the two ends of the slide groove body are respectively connected to the corresponding support body through the corresponding second connecting body.

15. The folding mechanism according to claim 12, characterized in that: One of the first base and the second base is provided with a limiting column, and the other is provided with a limiting hole, and the limiting column is inserted into the limiting hole.

16. The folding mechanism according to any one of claims 4 to 8, characterized in that: The base is provided with a fourth slide groove surface, the second surface is provided with a fourth matching surface, the fourth slide groove surface and the fourth matching surface are both arc-shaped surfaces, the fourth slide groove surface is coaxially arranged with the first slide groove surface, and the fourth matching surface is in contact with and slidably matched with the fourth slide groove surface.

17. The folding mechanism according to any one of claims 4 to 8, characterized in that: The base is provided with a stop groove, the stop groove has a stop surface, the second surface has a stop part, the stop part is slidably assembled in the stop groove, and the stop part contacts the stop surface when the folding mechanism is in a folded state.

18. A foldable electronic device, characterized in that: It comprises a first shell, a second shell, a flexible screen and a folding mechanism as described in any one of claims 4 to 17, wherein the folding mechanism is connected between the first shell and the second shell, and the flexible screen is laid on one side of the first shell, the second shell and the folding mechanism.

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