Foldable electronic devices

Abstract

The present application provides a foldable electronic device, which relates to the field of electronic product technology and can reduce the space occupied by the hinge mechanism, thereby realizing a lightweight and thin design of the foldable electronic device. The foldable electronic device includes a first shell, a second shell and a hinge mechanism, the hinge mechanism includes a first connecting member, a swing arm and a second connecting member, the first connecting member is fixedly connected to the first shell; one of the swing arm and the first connecting member includes a first arc-shaped guide rail, and the other includes a first matching portion, the first matching portion is slidably connected to the first arc-shaped guide rail, and the first matching portion can rotate relative to the first arc-shaped guide rail around a first axis, the first axis is collinear with the center line of the first arc-shaped guide rail; the second connecting member is fixedly connected to the second shell, one of the second connecting member and the swing arm is provided with a first rotating shaft, and the other is provided with a first shaft hole, the first rotating shaft is rotatably connected to the first shaft hole, so that the second connecting member can rotate relative to the swing arm around the central axis of the first rotating shaft.

Description

Technical Field

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

[0002] Foldable electronic devices, such as laptops, typically feature a hinge mechanism that connects the various components of the device, enabling the device to switch between an open and folded state. However, the hinge mechanism used in related art occupies a large space, hindering the slimming and lightweight design of the device. Summary of the Invention

[0003] The present application provides a foldable electronic device, in which a hinge mechanism occupies a small space, thereby enabling a lightweight and thin design of the foldable electronic device.

[0004] To achieve the above objectives, this application adopts the following technical solutions:

[0005] The present application provides a foldable electronic device, comprising: a first shell, a second shell and a hinge mechanism, the hinge mechanism comprising: a first connecting member, a swing arm and a second connecting member, the first connecting member being fixedly connected to the first shell; one of the swing arm and the first connecting member comprising a first circular arc guide rail, and the other comprising a first matching portion, the first matching portion being slidably connected to the first circular arc guide rail, and the first matching portion being capable of rotating around a first axis relative to the first circular arc guide rail, the first axis being collinear with a center line of the first circular arc guide rail; the second connecting member being fixedly connected to the second shell, one of the second connecting member and the swing arm being provided with a first rotating shaft, and the other being provided with a first shaft hole, the first rotating shaft being rotatably connected to the first shaft hole, so that the second connecting member can rotate around the central axis of the first rotating shaft relative to the swing arm.

[0006] The foldable electronic device in the present application adopts a rotation method that combines a virtual axis and a real axis in its hinge mechanism. On the one hand, it can increase the maximum opening and closing angle of the foldable electronic device by rotating the second connecting member relative to the swing arm; on the other hand, it can reduce the rotation angle range and rotation radius of the swing arm relative to the first connecting member, thereby not only reducing the space occupied by the rotation path of the swing arm in the first shell and thinning the thickness of the first shell, which is conducive to achieving a lightweight design of the foldable electronic device, but also reducing the exposed size of the swing arm when the foldable electronic device is in a fully opened state, and the backward sliding amount of the second shell in the fully opened state, which can improve the appearance of the foldable electronic device in the fully opened state; on the other hand, it can also flexibly design the rotation angle, position of the rotation axis, etc. of different rotation strokes, thereby improving the design freedom of the hinge mechanism and helping to reduce the design difficulty of the hinge mechanism.

[0007] In some embodiments, the first connecting member includes a first arc-shaped guide rail, the first arc-shaped guide rail includes a first arc-shaped groove, the swing arm is in the shape of an arc plate, the centerline of the swing arm is collinear with the first axis, and at least a portion of the swing arm is formed as a first mating portion, which slidably engages with the first arc-shaped groove. This helps increase the contact area between the first mating portion and the first arc-shaped guide rail, reduces the shaking of the swing arm during rotation relative to the first connecting member, and simplifies the structure of the swing arm, making the rotation path of the swing arm more regular and avoiding interference with other structures during the swing arm's rotation.

[0008] In some embodiments, a side edge of the swing arm in a first direction is formed as a first matching portion, wherein the first direction is parallel to the first axis. In other embodiments, the entire swing arm may be formed as the first matching portion.

[0009] In some embodiments, the first matching portion is arc-shaped.

[0010] In some embodiments, the first connecting member includes a first wall panel, the first wall panel including a first inner wall surface and a first outer wall surface that are opposite to each other in a first direction, the swing arm is located on the side facing the first inner wall surface, the first direction is parallel to the first axis, and the first arc-shaped guide rail or the first mating portion is disposed on the first wall panel. A location for disposing the first arc-shaped guide rail or the first mating portion is provided.

[0011] In some embodiments, the first arcuate guide rail includes a first arcuate rib and a second arcuate rib disposed opposite each other, the first arcuate rib and the second arcuate rib being fixedly connected to the first inner wall surface, the first arcuate rib and the second arcuate rib defining a first arcuate groove, and the first mating portion mating with the first arcuate groove. Thus, the first arcuate rib and the second arcuate rib defining the first arcuate groove help improve the overall structural strength of the first connector or swing arm.

[0012] In some embodiments, one of the first connecting member and the swing arm is provided with a first limiting hole, and the other is provided with a first limiting protrusion. The first limiting protrusion slidably engages with the first limiting hole. The first limiting hole is an arc-shaped hole, and the centerline of the first limiting hole is collinear with the first axis. The first limiting hole includes a first hole wall surface and a second hole wall surface that are opposite to each other along its extension path. The swing arm can rotate relative to the first connecting member between a first position and a second position. In the first position, the first limiting protrusion abuts the first hole wall surface, and in the second position, the first limiting protrusion abuts the second hole wall surface. In this way, the cooperation between the first limiting protrusion and the first limiting hole can limit the rotation angle of the swing arm relative to the first connecting member, prevent the swing arm from disengaging from the first connecting member, and improve the connection reliability between the swing arm and the first connecting member. In addition, the cooperation between the first limiting protrusion and the first limiting hole can also guide the rotation of the swing arm relative to the first connecting member, thereby improving the smoothness and stability of the swing arm's rotation relative to the first connecting member.

[0013] In some embodiments, the central angle corresponding to the first limiting hole is greater than or equal to 80 degrees and less than or equal to 130 degrees. This can reduce the arc length corresponding to the first limiting hole while ensuring the maximum opening and closing angle of the foldable electronic device. This can prevent the first limiting hole from penetrating the edge of the first wall panel, thereby improving the structural strength of the first connecting member. It can also reduce the space occupied by the swing arm's rotation path in the first connecting member, thereby optimizing the spatial layout of the keyboard host 1 and improving space utilization.

[0014] In some embodiments, when the swing arm rotates from the first position to the second position relative to the first connecting member, the swing arm rotates by an angle greater than or equal to 80 degrees and less than or equal to 130 degrees relative to the first connecting member. In other words, the second housing rotates by an angle greater than or equal to 80 degrees and less than or equal to 130 degrees relative to the first housing.

[0015] In some embodiments, the foldable electronic device further includes a first damping assembly disposed on the first limiting protrusion and configured to provide a damping force to the swing arm when the swing arm rotates relative to the first connecting member. This provides a damping feel when a user applies an external force to the first housing, causing the swing arm to rotate relative to the first connecting member, thereby enhancing the user experience.

[0016] In some embodiments, the first connecting member includes a first wall plate, a first limiting hole is provided in the first wall plate, and a first limiting protrusion is provided through the first limiting hole; the first damping assembly includes a first friction pad, a first elastic member, and a first limiting member; the first friction pad is fixedly connected to the first limiting protrusion and abuts against the first wall plate; the first elastic member is provided on a side of the first friction pad facing away from the first wall plate and is used to apply a force to the first friction pad toward the first wall plate; the first limiting member is provided on a side of the first elastic member facing away from the first wall plate, the first limiting member is fixed relative to the swing arm, and the first limiting member abuts against an end of the first elastic member facing away from the first friction pad. A specific structure of the first damping assembly is provided.

[0017] In some embodiments, the first connector includes: a first wall panel, a second wall panel, and a first top panel; the first arc-shaped guide rail or the first mating portion is disposed on the first wall panel; the second wall panel is spaced apart from and opposed to the first wall panel in a first direction, the first direction being parallel to a first axis; the swing arm is located between the first wall panel and the second wall panel; the first top panel is connected between the first wall panel and the second wall panel; the first top panel is provided with a first avoidance hole, and the swing arm slidably engages with the first avoidance hole. A specific structure of the first connector is provided.

[0018] In some embodiments, the first connecting member includes: a first split portion and a second split portion, the first split portion including a first wall plate, the first limiting hole or the first limiting protrusion being provided on the first wall plate; the second split portion including a second wall plate, the second wall plate being opposite the first wall plate in a first direction, the swing arm being located between the first wall plate and the second wall plate, the second split portion being fixedly connected to the first split portion, and the second split portion and the first split portion being separate components. This reduces the difficulty of assembling the swing arm and the first connecting member, thereby improving the assembly efficiency of the rotating shaft mechanism.

[0019] In some embodiments, when the hinge mechanism is in the folded state, the swing arm can rotate between a first position and a second position relative to the first connecting member, and when the hinge mechanism is in the folded state, the swing arm is in the first position relative to the first connecting member; the hinge mechanism also includes a magnetic assembly, the magnetic assembly includes a first magnetic member and a second magnetic member, the first magnetic member is disposed on the first connecting member, the second magnetic member is disposed on the swing arm and can rotate synchronously with the swing arm, and when the swing arm is in the second position relative to the first connecting member, the first magnetic member and the second magnetic member are magnetically engaged. In this way, when the hinge mechanism switches from the fully open state to the folded state, it can first perform a real axis rotation stroke and then a virtual axis rotation stroke, thereby avoiding interference between the second shell and the first shell during the process of switching the foldable electronic device from the fully open state to the folded state.

[0020] In some embodiments, a third limiting hole is provided on one of the second connecting member and the swing arm, and a third limiting protrusion is provided on the other. The third limiting protrusion slides in cooperation with the third limiting hole. The third limiting hole is an arc-shaped hole, and the center line of the third limiting hole is colinear with the axis of the first rotating shaft. The second connecting member can rotate between a third position and a fourth position relative to the swing arm. When the foldable electronic device is in a folded state, the second connecting member is in a third position relative to the swing arm. The third limiting hole includes a third hole wall and a fourth hole wall that are opposite to each other in its extension path, wherein, in the third position, the third limiting protrusion abuts against the third hole wall, and in the fourth position, the third limiting protrusion abuts against the fourth hole wall.

[0021] In some embodiments, the central angle of the third limiting hole is greater than or equal to 20 degrees and less than or equal to 70 degrees. This can reduce the arc length of the third limiting hole while ensuring the maximum opening and closing angle of the foldable electronic device, preventing the third limiting hole from penetrating the edge of the first side panel, and improving the structural strength of the second connector.

[0022] In some embodiments, when the second connecting member rotates from the third position to the fourth position relative to the swing arm, the angle of rotation of the second connecting member relative to the swing arm is greater than or equal to 20 degrees and less than or equal to 70 degrees. In other words, the angle of rotation of the second shell relative to the first shell is greater than or equal to 20 degrees and less than or equal to 70 degrees.

[0023] In some embodiments, the foldable electronic device further includes a third damping component, which is disposed on the third limiting protrusion and is used to provide a damping force for the second connecting member when the second connecting member rotates relative to the swing arm.

[0024] In some embodiments, the second connecting member includes a first side plate, the first side plate includes: a side plate body and an abutment boss, a third limiting hole is formed in the side plate body, the third limiting protrusion is passed through the third limiting hole, the swing arm and the side plate body are arranged in the first direction, and the third damping assembly is located on the side of the side plate body facing away from the swing arm; the abutment boss is arranged on the side surface of the side plate body facing away from the swing arm, and the abutment boss is located on the outer periphery of the third limiting hole, and the surface of the abutment boss facing away from the side plate body is used to abut with the third damping assembly; when the second connecting member is in the third position relative to the swing arm, the abutment boss is located on the side of the third damping assembly facing away from the wall of the third hole. In this way, when the hinge mechanism switches from the folded state to the fully opened state, the cooperation between the abutment boss and the third friction pad can limit the second connecting member from rotating from the third position to the fourth position relative to the swing arm, so that the swing arm can first rotate from the first position to the second position relative to the first connecting member, which is convenient for controlling the sequence of the virtual axis rotation stroke and the real axis rotation stroke, thereby avoiding interference between the display and the keyboard host during the process of switching the foldable electronic device from the folded state to the fully opened state.

[0025] In some embodiments, the abutment boss includes a first abutment segment and a first guide segment. The first guide segment is fixedly connected to an end of the first abutment segment near the third hole wall surface. In a direction from the third hole wall surface to the fourth hole wall surface, the first guide segment extends away from the surface of the side plate body and in a direction away from the side plate body. In this way, when the hinge mechanism switches from a folded state to a fully opened state, when the swing arm rotates to the second position relative to the first connecting member, the third friction pad can slide toward the first abutment segment under the guidance of the first guide surface, thereby facilitating abutment between the third friction pad and the first side plate.

[0026] In some embodiments, the swing arm can rotate between a first position and a second position relative to the first connector, and the second connector can rotate between a third position and a fourth position relative to the swing arm. The foldable electronic device has a folded state and a fully opened state. In the folded state, the swing arm is located in the first position relative to the first connector, and the second connector is located in the third position relative to the swing arm. In the fully opened state, the swing arm is located in the second position relative to the first connector, and the second connector is located in the fourth position relative to the swing arm. When the foldable electronic device switches from the folded state to the fully opened state, after the swing arm rotates from the first position to the second position relative to the first connector, the second connector rotates from the third position to the fourth position relative to the swing arm. In this way, interference between the second shell and the first shell can be avoided when the foldable electronic device switches from the folded state to the fully opened state.

[0027] In some embodiments, when the foldable electronic device switches from a fully open state to a folded state, after the second connector rotates from the fourth position to the third position relative to the swing arm, the swing arm then rotates from the second position to the first position relative to the first connector. This prevents interference between the second housing and the first housing during the switching of the foldable electronic device from the fully open state to the folded state.

[0028] In some embodiments, the first housing is provided with a first assembly cavity, and the first connector is disposed in the first assembly cavity. This facilitates assembly of the first connector with the first housing, helps reduce the exposed size of the first connector, and improves the aesthetic appearance of the foldable electronic device.

[0029] In some embodiments, the second housing is provided with a second assembly cavity, and the second connector is disposed in the second assembly cavity. This facilitates assembly of the second connector with the second housing, helps reduce the exposed size of the second connector, and improves the aesthetic appearance of the foldable electronic device.

[0030] In some embodiments, a first assembly cavity is provided on the first shell, the first connector is provided in the first assembly cavity, and a second assembly cavity is provided on the second shell, the second connector is provided in the second assembly cavity.

[0031] In some embodiments, the first housing includes a first portion and a second portion, the first portion including a first surface; the second portion is fixedly connected to a circumferential side of the first portion and protrudes from the first surface, and at least a portion of the first assembly cavity is located in the second portion; the foldable electronic device includes a folded state, in which the second housing is stacked with the first portion, the second housing is located on a side facing the first surface, and a portion of the second portion is located on a circumferential side of the second housing. Because the thickness of the second portion is greater than that of the first portion, by locating at least a portion of the first assembly cavity in the second portion, the restriction imposed by the size of the first assembly cavity on the structure of the first connector can be reduced, thereby improving the space utilization of the foldable electronic device and reducing the design difficulty of the first connector.

[0032] In some embodiments, the second portion includes a first end surface, the first end surface being oriented in the same direction as the first surface;

[0033] The first assembly cavity includes a first opening extending through the first end surface. This not only increases the size of the first assembly cavity in the Z-axis direction, but also reduces the restrictions imposed by the size of the first assembly cavity in the Z-axis direction on the structure of the first connector, thereby improving the space utilization of the foldable electronic device and reducing the design difficulty of the first connector. Furthermore, it reduces the difficulty of assembling the hinge mechanism and the keyboard host.

[0034] In some embodiments, the first connector includes a first top plate that seals the first opening. This improves the waterproof performance of the first housing and helps reduce the thickness of the keyboard host. Furthermore, when the hinge mechanism is assembled to the keyboard host, interference between the first housing and the swing arm is avoided. This allows the swing arm and the first connector to be assembled as a single unit before being assembled to the first housing, reducing the difficulty of assembling the hinge mechanism and the first housing.

[0035] In some embodiments, the first top surface of the first connector is coplanar with the first end surface, the second top surface is coplanar with the first surface, and the first connecting surface is coplanar with the first side surface. This can make the appearance of the foldable electronic device more beautiful.

[0036] In some embodiments, the second portion includes a second end surface, the second end surface being oriented opposite to the first surface;

[0037] The first assembly cavity includes a second opening, and the second opening passes through the second end surface. In this way, the difficulty of assembling the first connecting member and the first housing can be further reduced.

[0038] In some embodiments, the first housing is provided with a groove, the groove comprising a first notch and a first groove bottom wall, the first notch being located circumferentially outward from and communicating with the second opening, the first groove bottom wall being opposite the first notch; the first connector is provided with a first fixing plate, the first fixing plate supporting and fixedly connected to the first groove bottom wall, providing a fixing method between the first housing and the first connector.

[0039] In some embodiments, the foldable electronic device includes a first cover plate, which covers the second opening. This prevents liquid, dust, etc. from entering the first housing through the second opening, thereby improving the waterproof and dustproof performance of the foldable electronic device.

[0040] In some embodiments, the second portion includes a first end face and a first side face, the first end face is oriented in the same direction as the first surface, and the first side face is connected between the first end face and the first surface; the second housing includes a third surface and a second side face, and when the foldable electronic device is in the folded state, the third surface is opposite to the first surface, and the second side face is opposite to the first side face; the second assembly cavity includes a third opening and / or a fourth opening, the third opening extending through the third surface, and the fourth opening extending through the second side face. This facilitates assembly of the second connector with the second housing.

[0041] In some embodiments, the foldable electronic device is a laptop computer, and includes a keyboard host and a display, wherein the keyboard host includes a first housing and the display includes a second housing. A specific structure of the foldable electronic device is provided. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 A schematic structural diagram of a foldable electronic device provided in some embodiments of the present application;

[0043] Figure 2 for Figure 1 A schematic structural diagram of a foldable electronic device shown in FIG. 1 is in a folded state;

[0044] Figure 3 for Figure 2 An enlarged view of area A of the foldable electronic device shown;

[0045] Figure 4 A schematic diagram of the assembly of a hinge mechanism, a display, and a keyboard host in a foldable electronic device provided in some embodiments of the present application;

[0046] Figure 5 Schematic diagram of the assembly of the hinge mechanism, display, and keyboard host in a foldable electronic device provided in other embodiments of the present application;

[0047] Figure 6 for Figure 1 A perspective view of the hinge mechanism in the foldable electronic device shown in a fully opened state;

[0048] Figure 7 for Figure 6 An exploded view of the shaft mechanism shown;

[0049] Figure 8 for Figure 6 A perspective view of the rotating shaft mechanism shown in a folded state;

[0050] Figure 9 for Figure 8 The cross-sectional view of the rotating shaft mechanism shown is taken along line AA;

[0051] Figure 10 for Figure 6 A three-dimensional view of the rotating shaft mechanism shown in another perspective;

[0052] Figure 11 for Figure 8 A cross-sectional view of the rotating shaft mechanism shown at line BB;

[0053] Figure 12 for Figure 8 An exploded view of the shaft mechanism shown;

[0054] Figure 13 for Figure 6 An exploded view of the rotating shaft mechanism shown in an intermediate open state;

[0055] Figure 14 for Figure 6 Another exploded view of the shaft mechanism shown;

[0056] Figure 15a for Figure 7 A perspective view of the swing arm in the shaft mechanism shown;

[0057] Figure 15b for Figure 14 A schematic diagram of the assembly of the swing arm and the second connecting member in the rotating shaft mechanism;

[0058] Figure 16 for Figure 8 A cross-sectional view of the rotating shaft mechanism at line CC is shown;

[0059] Figure 17 for Figure 6 Schematic diagrams of the rotating shaft mechanism shown in different states;

[0060] Figure 18 for Figure 10 The cross-sectional view of the rotating shaft mechanism 3 at line DD is shown;

[0061] Figure 19 for Figure 6 A perspective view of the rotating shaft mechanism shown in an intermediate open state;

[0062] Figure 20 for Figure 19 An enlarged view of the rotating shaft mechanism in the area B is shown;

[0063] Figure 21 for Figure 6 An exploded view of the first connecting member in the rotating shaft mechanism;

[0064] Figure 22 for Figure 6 An exploded view of the second connecting member in the rotating shaft mechanism;

[0065] Figure 23 for Figure 1 An exploded view of the foldable electronic device shown;

[0066] Figure 24 for Figure 23 The exploded view shown is an enlarged view of the C area;

[0067] Figure 25 for Figure 1 Schematic diagram of assembly of the keyboard host and the first connecting member in the foldable electronic device shown in ;

[0068] Figure 26 for Figure 1 An exploded view of the keyboard host and the first connecting member in the foldable electronic device;

[0069] Figure 27 for Figure 26 Schematic diagram of assembly of the first cover plate and the first shell shown in ;

[0070] Figure 28 for Figure 1 A partial exploded view of a display in the foldable electronic device shown;

[0071] Figure 29 for Figure 1 An enlarged view of the foldable electronic device in the D region shown in FIG;

[0072] Figure 30 Schematic diagram of the rotating shaft mechanism provided in some other embodiments of the present application.

[0073] Reference numerals:

[0074] 100. Foldable electronic device; 1. Keyboard host; 11. First housing; 111. First portion; 1111. First surface; 1112. Second surface; 112. Second portion; 1121. First end surface; 1122. Second end surface; 1123. First side surface; 113. First assembly cavity; 1131. First opening; 1132. Second opening; 114. Groove; 1141. First notch; 1142. First groove bottom wall; 115. First avoidance groove; 1151. Second notch; 116. Second avoidance groove; 1161. Third notch; 12. Keyboard; 13. First cover; 2. Display; 21. Second housing; 211. Third surface; 212. Second side surface; 213. Second assembly cavity Matching cavity; 2131, third open mouth; 2132, fourth open mouth; 2133, support plate; 214, third avoidance groove; 2141, fourth notch; 215, fourth avoidance groove; 2151, fifth notch; 22, display screen; 23, second cover plate; 24, second baffle; 3, rotating shaft mechanism; 31, first connecting member; 311, first side panel; 3111, first wall panel; 3111a, first inner wall surface; 3111b, first outer wall surface; 3112, second wall panel; 3113, third wall panel; 3113a, second sub-panel; 3113b, fifth sub-panel; 3114, fourth wall panel; 3114a, third sub-panel; 3114b, sixth sub-panel; 312, first top panel; 312a, first sub-panel ; 312b, fourth sub-plate; 3121, first plate body; 3121a, first top surface; 3122, second plate body; 3122a, second top surface; 3123, first connecting plate; 3123a, first avoidance hole; 3123b, first connecting surface; 313, first arc-shaped guide rail; 3131, first arc-shaped rib; 3132, second arc-shaped rib; 3133, first arc-shaped groove; 314, second arc-shaped guide rail; 3151, first fixing ear; 3151a, first fixing hole; 3152, second fixing ear; 3152a, second fixing hole; 316, first fixing plate; 31a, first split part; 31b, second split part; 32, swing arm; 321, swing arm body; 322, first mating 3221, first side end surface; 323, second matching portion; 33, second connecting member; 331, second side panel; 3311, first side panel; 3111a, side panel body; 3111b, abutting boss; L1, first guide section; L2, first abutting section; L3, connecting section; L4, second abutting section; L5, second guide section; 3312, second side panel; 3313, third side panel; 3313a, second split panel; 3313b, sixth split panel; 3314, fourth side panel; 3314a, third split panel; 3314b, seventh split panel; 332, second top panel; 332a, first split panel; 332b, fifth split panel; 333, second bottom panel; 333a, fourth split panel; 333b, eighth split panel;3331, second bottom surface; 33a, third split portion; 33b, fourth split portion; 3341, first positioning structure; 3342, second positioning structure; 335, second fixing plate; 336, second avoidance hole; 34, rotating shaft; 35, sliding portion; 361, first rotating shaft; 362, first shaft hole; 363, second rotating shaft; 364, second shaft hole; 371, first limit assembly; 3711, first limit assembly 3711a, first section; 3711b, second section; 3711c, plane portion; 3712, first limiting hole; 3712a, first hole wall; 3712b, second hole wall; 372, second limiting assembly; 3721, second limiting protrusion; 3722, second limiting hole; 373, third limiting assembly; 3731, third limiting protrusion; 3732, third limiting hole; 3732a, Third hole wall; 3732b, fourth hole wall; 374, fourth limiting assembly; 3741, fourth limiting protrusion; 3742, fourth limiting hole; 38, damping mechanism; 381, first damping assembly; 3811, first friction pad; 3811a, first assembly hole; 3812, first elastic member; 3812a, disc spring; 3812b, second assembly hole; 3813, first limiting member; 382, second damping assembly; 3821, second friction pad; 3822, second elastic member; 3823, second limiting member; 383, third damping assembly; 3831, third friction pad; 3832, third elastic member; 3833, third limiting member; 384, fourth damping assembly; 3841, fourth friction pad; 3842, fourth elastic member; 3843, fourth elastic member; 39, extension plate; 391, second side end surface;

[0075] 301, magnetic attraction component; 3011, first magnetic attraction component; 3012, second magnetic attraction component. DETAILED DESCRIPTION

[0076] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments.

[0077] In the embodiments of this application, the terms "exemplary" or "for example" are used to indicate an example, illustration, or description. Any embodiment or design described as "exemplary" or "for example" in the embodiments of this application should not be interpreted as being more preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "for example" is intended to present the relevant concepts in a concrete manner.

[0078] In the embodiments of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, features defined as "first" or "second" may explicitly or implicitly include one or more of the features.

[0079] In the embodiments of the present application, directional terms such as "front", "back", "top" and "bottom" may be defined including but not limited to the orientation relative to the components in the drawings. It should be understood that these directional terms may be relative concepts. They are used for relative description and clarification, and may change accordingly according to changes in the orientation of the components in the drawings.

[0080] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. Among them, "fixed connection" means that the two are connected to each other and the relative position relationship remains unchanged after the connection. "Rotational connection" means that the two are connected to each other and can rotate relative to each other after the connection. "Sliding connection" means that the two are connected to each other and can slide relative to each other after the connection.

[0081] In the description of the embodiments of the present application, the terms "direction consistent", "perpendicular", "parallel", "equal", and "collinear" include the situations described and situations similar to the situations described, and the range of the similar situations is within an acceptable deviation range, wherein the acceptable deviation range is as determined by a person of ordinary skill in the art taking into account the measurement being discussed and the errors associated with the measurement of a specific quantity (i.e., the limitations of the measurement system). For example, "parallel" includes absolute parallelism and approximate parallelism, wherein the acceptable deviation range of approximate parallelism can be, for example, a deviation within 5°, 8°, or 10°; "perpendicular" includes absolute perpendicularity and approximate perpendicularity, wherein the acceptable deviation range of approximate perpendicularity can also be, for example, a deviation within 5°, 8°, or 10°. "Equal" includes absolute equality and approximate equality, wherein the acceptable deviation range of approximate equality can be, for example, the difference between the two equals is less than or equal to 5%, 8%, or 10% of either one. "Collinear" includes absolute collinearity and approximate collinearity, wherein the acceptable deviation range of approximate collinearity can be, for example, a deviation within 5°, 8°, or 10°.

[0082] An embodiment of the present application provides a foldable electronic device, which includes a hinge mechanism. The foldable electronic device in the embodiment of the present application proposes a hinge mechanism design scheme based on a combination of virtual and real axis rotation, and sets the rotation stroke of the hinge mechanism to include two strokes: a virtual axis rotation stroke and a real axis rotation stroke. In this way, under the same design constraints, the foldable electronic device in the embodiment of the present application can increase the opening and closing angle of the foldable electronic device when it is in a fully open state, and can achieve a lightweight and thin design of the foldable electronic device. In addition, it can also reduce the exposed size of the hinge mechanism when the foldable electronic device is in a fully open state, which is conducive to improving the appearance of the foldable electronic device in a fully open state.

[0083] Specifically, the foldable electronic devices in the embodiments of the present application include but are not limited to laptop computers, mobile phones, tablet computers, laptop computers, personal digital assistants (PDAs), personal computers, vehicle-mounted devices, and other electronic devices.

[0084] See also Figure 1 , Figure 1 This is a schematic diagram of the structure of a foldable electronic device 100 provided in some embodiments of the present application. In this embodiment, the foldable electronic device 100 is a laptop computer. The foldable electronic device 100 includes a keyboard host 1 (also known as the system end), a display 2 (also known as the screen end), and a hinge mechanism 3.

[0085] It should be noted that Figure 1 Only some components of the foldable electronic device 100 are schematically shown, and the actual shapes, sizes, positions and structures of these components are not affected by the present invention. Figure 1 Moreover, it is understandable that the foldable electronic device 100 may include other components besides the keyboard host 1, the display 2 and the hinge mechanism 3, such as a camera module, etc., which are not specifically limited here.

[0086] The keyboard host 1 is used to input commands and data, and according to the input commands and data, controls the display 2 to display images, videos, etc. At the same time, the keyboard host 1 is also used to play voice or music. The keyboard host 1 can constitute the first folding body of the foldable electronic device 100.

[0087] See also Figure 1The keyboard host 1 includes a first housing 11 and a keyboard 12. The keyboard 12 is used to input commands and data. The first housing 11 is used to support and secure the keyboard 12. The first housing 11 has a storage space in which the electronic components of the keyboard host 1 (not shown) can be accommodated. The electronic components include, but are not limited to, a motherboard, a speaker module, a heat dissipation module, and the like.

[0088] To facilitate the description of the following embodiments, an XYZ coordinate system is established for the keyboard host 1. Specifically, the length of the keyboard host 1 is defined as the X-axis, the width of the keyboard host 1 is defined as the Y-axis, and the thickness of the keyboard host 1 is defined as the Z-axis. It is understood that the coordinate system of the keyboard host 1 can be flexibly configured according to actual needs and is not specifically limited here.

[0089] The display 2 is used to display images, videos, etc. The display 2 can constitute the second folding body of the foldable electronic device 100. Figure 1 The display 2 includes a display screen 22 and a second housing 21. The display screen 22 can be a flexible display screen or a rigid display screen. The second housing 21 is used to protect the display screen 22. The second housing 21 can cover the edge of the display screen 22 and the back of the display screen 22.

[0090] The display 2 is rotatably connected to the keyboard host 1 so that the foldable electronic device 100 can be switched between an open state and a folded state. The rotation axis of the display 2 relative to the keyboard host 1 can be parallel to the X-axis direction. Figure 1 , Figure 1 The foldable electronic device 100 is shown in an open state. When the foldable electronic device 100 is in the open state, the angle α between the display 2 and the keyboard host 1 is greater than 0° and less than or equal to 180°. In this state, the user can control the display 2 by operating the keyboard host 1, and the user can also view images or videos displayed on the display 2.

[0091] It should be noted that the “angle between the display 2 and the keyboard host 1 ” described in the embodiments of the present application refers to the angle between the display surface of the display 2 and the keyboard surface of the keyboard host 1 .

[0092] The opening state of the foldable electronic device 100 includes a fully open state and an intermediate open state. The fully open state refers to the state when the display 2 is opened to the extreme position relative to the keyboard host 1. When the foldable electronic device 100 is in the fully open state, the angle α between the display 2 and the keyboard host 1 is the maximum opening and closing angle of the foldable electronic device 100. The intermediate open state can be any one or more states between the fully open state and the folded state of the foldable electronic device 100. In the intermediate open state, the angle α between the display 2 and the keyboard host 1 is less than the maximum opening and closing angle and greater than 0 degrees. Under different usage requirements, the foldable electronic device 100 can switch to different states.

[0093] In some embodiments, the maximum opening and closing angle of the foldable electronic device 100 can be greater than or equal to 90 degrees and less than or equal to 180 degrees. For example, the maximum opening and closing angle can be 90 degrees, 100 degrees, 105 degrees, 110 degrees, 115 degrees, 120 degrees, 130 degrees, 140 degrees, 150 degrees, 160 degrees, 170 degrees, 180 degrees, etc. Furthermore, the maximum opening and closing angle can be greater than or equal to 120 degrees and less than or equal to 160 degrees. In this case, the user can view the display 2, which facilitates user operation and use, and can reduce the design difficulty of the foldable electronic device 100.

[0094] See also Figure 2 , Figure 2 for Figure 1 The diagram shows the structure of the foldable electronic device 100 in its folded state. When the foldable electronic device 100 is folded, the display 2 covers the keyboard host 1, with the display surface of the display 2 facing the keyboard surface of the keyboard host 1. At this point, the angle between the display 2 and the keyboard host 1 is approximately 0 degrees. In this state, the size of the foldable electronic device 100 is reduced, making it easier to store and carry, and the display surface of the display 2 and the keyboard surface of the keyboard host 1 are protected from scratches and dust.

[0095] In some embodiments, see Figure 1 Combined with Figure 2 The first shell 11 includes a first part 111 and a second part 112, and the second part 112 is fixedly connected to one circumferential side of the first part 111. For example, the second part 112 can be located at the rear end of the first part 111. The keyboard 12 is mounted on the first part 111. It should be noted that the direction "rear" in the embodiment of the present application refers to the direction in which the foldable electronic device 100 is away from the user when the user faces and uses the foldable electronic device 100. Correspondingly, the direction "front" refers to the direction in which the foldable electronic device 100 is close to the user when the user faces and uses the foldable electronic device 100.

[0096] For details, please refer to Figure 1-Figure 2 The first portion 111 includes a first surface 1111 and a second surface 1112 facing each other. The first surface 1111 may be the keyboard surface of the keyboard host 1. The second portion 112 protrudes from the first surface 1111. In some embodiments, the thickness of the second portion 112 is greater than the thickness of the first portion 111. In other words, the distance between the first end surface 1121 and the second end surface 1122 is greater than the distance between the first surface 1111 and the second surface 1112.

[0097] See also Figure 1 The second portion 112 includes a first end surface 1121, a second end surface 1122, and a first side surface 1123. The first end surface 1121 and the second end surface 1122 are opposite to each other, and the orientation of the first end surface 1121 is the same as that of the first surface 1111. The first side surface 1123 is connected between the first end surface 1121 and the first surface 1111. The second end surface 1122 and the second surface 1112 can constitute the bottom wall surface of the first shell 11. The first end surface 1121, the first side surface 1123, and the first surface 1111 can constitute the top wall surface of the first shell 11. In this embodiment, the top wall surface is a stepped surface.

[0098] See also Figure 1 The second shell 21 includes a third surface 211 and a second side surface 212 . The direction of the third surface 211 is the same as that of the display surface. The second side surface 212 is located on one circumferential side of the third surface 211 .

[0099] For details, please refer to Figure 1 When the foldable electronic device 100 is fully opened, the display 2 is entirely located on the side facing the first end surface 1121. In this state, the display 2 and the keyboard host 1 are arranged in the Z-axis direction. This prevents the display 2 from blocking the rear surface of the first housing 11 when the foldable electronic device 100 is fully opened, allowing signal interfaces, heat dissipation vents, etc. to be located on the rear surface of the first housing 11, thereby increasing the number of signal interfaces and optimizing the overall layout of the foldable electronic device 100.

[0100] Here, the "rear end face of the first housing 11" refers to the end face of the first housing 11 facing away from the user when the user faces and uses the foldable electronic device 100. In this embodiment, the end face of the second portion 112 facing away from the first portion 111 forms the rear end face of the first housing 11.

[0101] See also Figure 2When the foldable electronic device 100 is in the folded state, the second shell 21 and the first part 111 are stacked, and the second shell 21 is located on the side facing the first surface 1111. A portion of the second part 112 is located on one circumferential side of the second shell 21. Specifically, when the foldable electronic device 100 is in the folded state, the orthographic projection of the first part 111 on the reference plane overlaps with the orthographic projection of the display 2 on the reference plane. The reference plane is perpendicular to the arrangement direction of the first part 111 and the second part 112 (for example, Figure 2 Y-axis direction in the image).

[0102] See also Figure 3 , Figure 3 for Figure 2 An enlarged view of the area A of the foldable electronic device 100 shown. When the foldable electronic device 100 is in a folded state, the second side surface 212 of the second shell 21 is arranged opposite to the first side surface 1123 of the second part 112. The third surface 211 of the second shell 21 is arranged opposite to the first surface 1111. In this way, when the foldable electronic device 100 is in a folded state, the overlapping size of the second shell 21 and the first shell 11 in the Z-axis direction can be reduced, which is conducive to achieving a lightweight and thin design of the foldable electronic device 100. Therefore, the foldable electronic device 100 in this embodiment can optimize the overall layout of the foldable electronic device 100 while achieving a lightweight and thin design of the foldable electronic device 100.

[0103] The first side surface 1123 and the second side surface 212 are adapted in shape. Exemplarily, both the first side surface 1123 and the second side surface 212 may be formed as inclined surfaces.

[0104] It is understood that, in some other embodiments, the foldable electronic device 100 may not include the second portion 112. Alternatively, in some other embodiments, the thickness of the second portion 112 may be equal to the thickness of the first portion 111.

[0105] The hinge mechanism 3 is connected between the display 2 and the keyboard host 1, and is used to realize the rotational connection between the display 2 and the keyboard host 1, so that the foldable electronic device 100 can switch between the open state and the folded state, thereby realizing the opening or folding of the foldable electronic device 100.

[0106] Specifically, the hinge mechanism 3 can switch between a folded state and an open state, thereby allowing the foldable electronic device 100 to switch between the folded state and the open state. It is understood that when the hinge mechanism 3 is in the folded state, the foldable electronic device 100 is also in the folded state. When the hinge mechanism 3 is in the fully open state, the foldable electronic device 100 is also in the fully open state. When the hinge mechanism 3 is in the intermediate open state, the foldable electronic device 100 is also in the intermediate open state.

[0107] In some embodiments, the shaft mechanism 3 is connected between the first housing 11 and the second housing 21. Figure 1 In this embodiment, there are two hinge mechanisms 3, which are spaced apart along the X-axis direction. This ensures the connection stability between the keyboard host 1 and the display 2, while also ensuring the rotation stability of the foldable electronic device 100. In other embodiments, there may be only one hinge mechanism 3. In this case, the hinge mechanism 3 may be located in the middle area of the keyboard host 1 in the X-axis direction to ensure the rotation stability of the foldable electronic device 100. In other embodiments, there may be more than two hinge mechanisms 3. The embodiment of this application does not specifically limit the number of hinge mechanisms 3.

[0108] See also Figure 4 , Figure 4 This is a schematic diagram of the assembly of the hinge mechanism 3, the display 2, and the keyboard host 1 in the foldable electronic device 100 provided in some embodiments of the present application. Figure 4 The foldable electronic device 100 shown in (a) is in a folded state; Figure 4 The foldable electronic device 100 shown in (b) is in a fully opened state.

[0109] The hinge mechanism 3 includes a swing arm 32 and a rotation axis 34. The swing arm 32 is fixedly connected to the display 2. The swing arm 32 is connected to the rotation axis 34 and is rotatably connected to the keyboard host 1 via the rotation axis 34, enabling the foldable electronic device 100 to switch between a folded state and an open state. Specifically, the rotation axis O of the swing arm 32 relative to the keyboard host 1 is collinear with the central axis of the rotation axis 34. In this embodiment, the rotation scheme of the hinge mechanism 3 is a real-axis rotation scheme.

[0110] The position of the rotation axis O is determined by the initial position of the display 2, the fully opened position of the display 2, and the maximum opening angle of the foldable electronic device 100. In this case, to prevent the rotation axis 34 from being exposed, that is, to ensure that the rotation axis 34 is located inside the keyboard body 1, the backward sliding distance d during the rotation of the display 2 needs to be increased. The greater the backward sliding distance d, the larger the rotation radius of the swing arm 32. This, on the one hand, increases the space occupied by the swing arm 32's rotation path within the keyboard body 1, that is, increases the sliding space reserved for the swing arm 32's rotation path within the keyboard body 1, which is not conducive to reducing the thickness of the keyboard body 1 and, in turn, hindering the lightweight design of the foldable electronic device 100. On the other hand, it increases the exposed size of the swing arm 32 when the foldable electronic device 100 is in the fully opened state, affecting the appearance of the foldable electronic device 100 in the fully opened state.

[0111] It should be noted that the "initial position of the display 2" described in the embodiments of this application refers to the position of the display 2 when the foldable electronic device 100 is in the folded state. The "fully opened position of the display 2" refers to the position of the display 2 when the foldable electronic device 100 is in the fully opened state. The "rearward sliding distance d" refers to the amount of movement of the display 2 relative to the keyboard host 1 along the Y-axis after the display 2 rotates from the initial position to the fully opened position.

[0112] The backward slip d is related to the position of the rotation axis O. Specifically, the backward slip d decreases as the position of the rotation axis O decreases (e.g. Figure 4 The solid arrow in the figure increases and increases with the upward movement of the rotation axis O (as shown in the solid arrow in the figure). Figure 4 The value of the ion is reduced in the direction indicated by the dotted arrow in the figure.

[0113] The “exposed dimensions of the swing arm 32” refers to the dimensions of the swing arm 32 exposed from the display 2 and the keyboard host 1. For example, Figure 4 In the illustrated embodiment, the swing arm 32 is in the shape of an arc plate, and the exposed dimension of the swing arm 32 refers to the arc length L of the swing arm 32 exposed from the display 2 and the keyboard host 1 .

[0114] See also Figure 5 , Figure 5 This is a schematic diagram of the assembly of the hinge mechanism 3, the display 2, and the keyboard host 1 in the foldable electronic device 100 provided in some other embodiments of the present application. Figure 5 The foldable electronic device 100 shown in (a) is in a folded state; Figure 5 The foldable electronic device 100 shown in (b) is in a fully opened state.

[0115] The hinge mechanism 3 in this embodiment includes a swing arm 32 and a sliding portion 35. The sliding portion 35 is provided on the keyboard host 1. Exemplarily, the sliding portion 35 is an arc-shaped groove. The swing arm 32 is slidably connected to the sliding portion 35, and the swing arm 32 can rotate around the rotation axis O relative to the keyboard host 1. The rotation axis O is collinear with the center line of the sliding portion 35. The rotation axis O is located outside the swing arm 32 and outside the sliding portion 35. That is, the rotation axis O does not intersect with either the swing arm 32 or the sliding portion 35.

[0116] In this embodiment, the rotation axis O is a virtual rotation axis, and the rotation scheme of the shaft mechanism 3 is a virtual axis rotation scheme. Since the shaft mechanism 3 does not need to limit the rotation axis O to the interior of the keyboard host 1 after meeting specific design parameters, Figure 4 Compared with the real axis rotation scheme in the embodiment, the rotating shaft mechanism 3 in this embodiment can reduce the backward sliding amount d of the display 2 by adjusting the position of the rotating axis O, thereby reducing the rotation radius of the swing arm 32.

[0117] In this way, although the sliding space reserved for the rotation path of the swing arm 32 inside the keyboard host 1 can be reduced to a certain extent, and the space occupied by the rotation path of the swing arm 32 in the keyboard host 1 can be reduced, the arc length corresponding to the above-mentioned sliding space is not only related to the rotation radius of the swing arm 32, but also related to the angle of rotation of the swing arm 32 relative to the keyboard host 1 (that is, the maximum opening and closing angle). Therefore, the hinge mechanism 3 in the embodiment of the present application still cannot effectively reduce the thickness of the keyboard host 1, or cannot achieve a large-angle flip of the display 2 while reducing the thickness of the keyboard host 1, so that the maximum opening and closing angle of the foldable electronic device 100 is limited.

[0118] In order to achieve a large-angle flip of the display 2 and ensure the maximum opening and closing angle of the foldable electronic device 100, while reducing the rotation radius of the swing arm 32, so as to achieve a lightweight design of the foldable electronic device 100, please refer to Figure 6-Figure 7 , Figure 6 for Figure 1 A perspective view of the hinge mechanism 3 in the foldable electronic device 100 in a fully opened state; Figure 7 for Figure 6 The exploded view of the rotating shaft mechanism 3 is shown. The rotating shaft mechanism 3 includes a first connecting member 31, a second connecting member 33 and a swing arm 32.

[0119] It should be noted that Figure 6-Figure 7 Only some components of the rotating shaft mechanism 3 are shown schematically, and the actual shape, actual size, actual position and actual structure of these components are not subject to Figure 6-Figure 7 limitation.

[0120] The first connector 31 can be fixedly connected to the keyboard host 1 (i.e., the first foldable body) and can be used to support the swing arm 32 and the second connector 33. In some embodiments, the first connector 31 can be fixedly connected to the first housing 11. The fixing methods between the first connector 31 and the first housing 11 include, but are not limited to, gluing, welding, riveting, clamping, or screwing.

[0121] In some embodiments, see Figure 7 The first connecting member 31 includes a first side panel 311 and a first top panel 312. The first side panel 311 includes a first wall panel 3111, a second wall panel 3112, a third wall panel 3113 and a fourth wall panel 3114.

[0122] The first wall panel 3111 can be flat. It is understood that in other embodiments, the first wall panel 3111 can also be arc-shaped. The material of the first wall panel 3111 may include, but is not limited to, metal, plastic, carbon fiber, etc. The second wall panel 3112 is disposed opposite and spaced apart from the first wall panel 3111 in the first direction. The first direction is parallel to the X-axis. The shape, material, etc. of the second wall panel 3112 can be designed with reference to the shape and material of the first wall panel 3111 and will not be described in detail here.

[0123] The third wall panel 3113 and the fourth wall panel 3114 are arranged opposite each other and spaced apart in a second direction. The second direction is perpendicular to the first direction. For example, the second direction is parallel to the Y-axis. The third wall panel 3113 and the fourth wall panel 3114 are both fixedly connected between the first wall panel 3111 and the second wall panel 3112. The first wall panel 3111, the third wall panel 3113, the second wall panel 3112, and the fourth wall panel 3114 are sequentially connected end to end to form the first side panel 311. The first side panel 311 defines a first cavity therein.

[0124] The first top plate 312 is fixedly connected between the first wall plate 3111 and the second wall plate 3112, and the first top plate 312 can cover one of the openings of the first cavity. For example, the first top plate 312 can be fixedly connected to one end of the first side panel 311 in the Z-axis direction. For details, please refer to Figure 7 The first top plate 312 includes a first plate body 3121, a second plate body 3122, and a first connecting plate 3123. The first plate body 3121 and the second plate body 3122 are arranged in the second direction, and the first connecting plate 3123 is connected between the first plate body 3121 and the second plate body 3122. The thickness direction of the first plate body 3121 and the thickness direction of the second plate body 3122 can both be parallel to the Z-axis direction.

[0125] It is understandable that, in other embodiments, the first connecting member 31 may not include at least one of the second wall panel 3112 , the third wall panel 3113 , the fourth wall panel 3114 and the first top panel 312 .

[0126] See also Figure 8-Figure 9 , Figure 8 for Figure 6 The three-dimensional diagram of the rotating shaft mechanism 3 in the folded state is shown. Figure 9 for Figure 8 The cross-sectional view of the rotating shaft mechanism 3 at line AA is shown. In which, since the swing arm 32 is inside the first connecting member 31 and is not visible when the rotating shaft mechanism 3 is in the folded state, Figure 8 The swing arm 32 is shown with a dotted line.

[0127] The first top plate 312 is in a step-like shape. Figure 9 The first plate 3121 includes a first top surface 3121a, and the second plate 3122 includes a second top surface 3122a. The second top surface 3122a is oriented in the same direction as the first top surface 3121a, and the second top surface 3122a is recessed relative to the first top surface 3121a in a direction away from the first top surface 3121a. The first connecting plate 3123 includes a first connecting surface 3123a, which is connected between the first top surface 3121a and the second top surface 3122a.

[0128] The second connecting member 33 is used to be fixedly connected to the display 2. In some embodiments, the second connecting member 33 can be fixedly connected to the second housing 21. The fixing methods between the second connecting member 33 and the second housing 21 include but are not limited to gluing, welding, riveting, clamping or screw connection.

[0129] See also Figure 7 The second connecting member 33 includes a second side panel 331, a second top panel 332 and a second bottom panel 333. The second top panel 332 and the second bottom panel 333 are fixedly connected to opposite sides of the second side panel 331 respectively.

[0130] In some embodiments, the second side panel 331 is annular. Specifically, the second side panel 331 includes a first side panel 3311, a second side panel 3312, a third side panel 3313, and a fourth side panel 3314. The first side panel 3311 and the second side panel 3312 are arranged opposite each other, and the third side panel 3313 and the fourth side panel 3314 are arranged opposite each other. The first side panel 3311, the third side panel 3313, the second side panel 3312, and the fourth side panel 3314 are connected end to end to form the second side panel 331. It is understood that in other embodiments, the second side panel 331 may also be non-annular. In addition, in other embodiments, the second connecting member 33 may not include at least one of the second side panel 3312, the first top panel 312, the third side panel 3313, and the fourth side panel 3314.

[0131] See also Figure 9 When the hinge mechanism 3 is in the folded state, the second bottom plate 333 and the second plate 3122 are stacked, and the third side plate 3313 is disposed opposite the first connecting plate 3123. This helps reduce the overall volume of the hinge mechanism 3, thereby reducing the overall space occupied by the hinge mechanism 3 and improving the space utilization of the foldable electronic device 100.

[0132] See also Figure 10 Combined with Figure 11 , Figure 10 for Figure 6 The three-dimensional diagram of the rotating shaft mechanism 3 shown in another perspective, Figure 11 for Figure 8 The cross-sectional view of the rotating shaft mechanism 3 shown is taken at line BB. The first connecting member 31 includes a first arc-shaped guide rail 313, and the swing arm 32 includes a first matching portion 322. The first matching portion 322 is slidably matched with the first arc-shaped guide rail 313, and the first matching portion 322 can rotate around the first axis O1 relative to the first arc-shaped guide rail 313. The first arc-shaped guide rail 313 is arc-shaped, and the first axis O1 is collinear with the center line of the first arc-shaped guide rail 313. For example, the first axis O1 is parallel to the X-axis direction. It is understandable that in other embodiments, the first connecting member 31 may include a first matching portion 322, and the swing arm 32 may include a first arc-shaped guide rail 313.

[0133] In this way, through the sliding and rotating cooperation between the first matching portion 322 and the first arc-shaped guide rail 313, the swing arm 32 and the first connecting member 31 can be integrally moved in the first virtual circle Y (such as Figure 9 The swing arm 32 can be extended and retracted in the circumferential direction of the circle shown by the dotted line in the figure), and the swing arm 32 can be rotated between the first position and the second position relative to the first connecting member 31, so as to realize the switching of the hinge mechanism 3 between different states, thereby realizing the folding and unfolding of the foldable electronic device 100.

[0134] When the hinge mechanism 3 is in a folded state, the swing arm 32 can be located in a first position relative to the first connecting member 31, and when the hinge mechanism 3 is in a fully opened state, the swing arm 32 can be located in a second position relative to the first connecting member 31. Furthermore, it should be noted that the "first virtual circle Y" described in the embodiments of the present application refers to a circle having the first axis O1 as its center line and the radius of rotation of the swing arm 32 relative to the first connecting member 31 as its radius. That is, the center of the first virtual circle Y is located on the first axis O1, and the radius of the first virtual circle Y is equal to the radius of rotation of the swing arm 32 relative to the first connecting member 31.

[0135] Because the first axis O1 is located outside the first arc-shaped guide rail 313, the travel of the swing arm 32 relative to the first connecting member 31 between the first position and the second position can also be referred to as the "virtual axis rotation travel." During this virtual axis rotation travel, when the swing arm 32 rotates from the first position to the second position relative to the first connecting member 31, the display 2 can rotate relative to the keyboard host 1 by a first angle. In other words, during this virtual axis rotation travel, the maximum change in the angle between the display 2 and the keyboard host 1 is the first angle.

[0136] Please return to Figure 7 The second connecting member 33 is provided with a first shaft hole 362, and the swing arm 32 is provided with a first shaft 361. The first shaft 361 rotatably engages with the first shaft hole 362, allowing the second connecting member 33 to rotate relative to the swing arm 32 about the second axis O2. The second axis O2 coincides with the central axis of the first shaft 361. In some embodiments, the second axis O2 is parallel to the first axis O1. It is understood that in other embodiments, the second connecting member 33 may be provided with the first shaft 361, and the swing arm 32 may be provided with the first shaft hole 362.

[0137] In this way, through the rotational cooperation between the first rotating shaft 361 and the first shaft hole 362, the second connecting member 33 can rotate between the third position and the fourth position relative to the swing arm 32, so as to realize the switching of the rotating shaft mechanism 3 between different states, and thus realize the folding and unfolding of the foldable electronic device 100.

[0138] The rotational travel of the second connecting member 33 relative to the swing arm 32 between the third and fourth positions can be referred to as the "real axis rotational travel." During this real axis rotational travel, when the second connecting member 33 rotates relative to the swing arm 32 from the third position to the fourth position, the display 2 can rotate relative to the keyboard host 1 by the second angle. That is, during this real axis rotational travel, the maximum change in the angle between the display 2 and the keyboard host 1 is the second angle.

[0139] For example, see Figure 8-Figure 9When the swing arm 32 is in the first position relative to the first connecting member 31 and the second connecting member 33 is in the third position relative to the swing arm 32, the rotating shaft mechanism 3 can be in a folded state. Figure 10 Combined with Figure 6 When the swing arm 32 is located at the second position relative to the first connecting member 31 and the second connecting member 33 is located at the fourth position relative to the swing arm 32, the rotating shaft mechanism 3 can be in a fully open state.

[0140] In this way, when the hinge mechanism 3 switches between the folded state and the fully open state, it needs to go through two strokes: the virtual axis rotation stroke and the real axis rotation stroke. The maximum opening and closing angle of the foldable electronic device 100 is the sum of the angle of rotation of the display 2 relative to the keyboard host 1 in the virtual axis rotation stroke (that is, the first angle) and the angle of rotation of the display 2 relative to the keyboard host 1 in the real axis rotation stroke (that is, the first angle).

[0141] Since the real axis rotation stroke is the rotation stroke of the second connecting member 33 relative to the swing arm 32, the rotation stroke does not affect the space occupied by the rotation path of the swing arm 32 in the keyboard host 1. In other words, the rotation stroke does not affect the sliding space reserved for the rotation path of the swing arm 32 inside the keyboard host 1.

[0142] Therefore, the foldable electronic device 100 in the embodiment of the present application adopts a rotation method combining the virtual axis and the real axis by setting the rotation stroke of the hinge mechanism 3 to include two strokes: a virtual axis rotation stroke and a real axis rotation stroke. On the one hand, the maximum opening and closing angle of the foldable electronic device 100 can be increased by the rotation stroke of the second connecting member 33 relative to the swing arm 32; on the other hand, the rotation angle range and rotation radius of the swing arm 32 relative to the first connecting member 31 can be reduced. This not only reduces the space occupied by the rotation path of the swing arm 32 in the keyboard host 1 and reduces the thickness of the keyboard host 1, which is conducive to achieving a lightweight design of the foldable electronic device 100, but also reduces the exposed size of the swing arm 32 when the foldable electronic device 100 is in the fully opened state and the backward sliding amount of the display 2 in the fully opened state, which can improve the appearance of the foldable electronic device 100 in the fully opened state. On the other hand, the rotation angle (i.e., the first angle and the second angle) and the position of the rotation axis (i.e., the first axis O1 and the second axis O2) of different rotation strokes can be flexibly designed, thereby increasing the design freedom of the hinge mechanism 3 and reducing the design difficulty of the hinge mechanism 3.

[0143] In some embodiments, see Figure 10The first arcuate guide rail 313 is disposed on the first wall panel 3111. Specifically, the first wall panel 3111 includes a first inner wall surface 3111a and a first outer wall surface 3111b that face each other in the X-axis direction. The first arcuate guide rail 313 is fixedly connected to the first inner wall surface 3111a. Specifically, the first arcuate guide rail 313 includes a first arcuate rib 3131 and a second arcuate rib 3132. The first arcuate rib 3131 and the second arcuate rib 3132 are both fixedly connected to the first inner wall surface 3111a, and the first arcuate rib 3131 and the second arcuate rib 3132 are spaced apart in the Z-axis direction. The first arcuate rib 3131 and the second arcuate rib 3132 both protrude from the first inner wall surface 3111a. A first arcuate groove 3133 is defined between the first arcuate rib 3131 and the second arcuate rib 3132. In this way, it is not only convenient to form the first arc-shaped groove 3133 on the first wall panel 3111 , but also the structural strength of the first wall panel 3111 can be improved by the first arc-shaped rib 3131 and the second arc-shaped rib 3132 .

[0144] The connection between the first arcuate rib 3131 and the first wall panel 3111 includes, but is not limited to, gluing, welding, clamping, or screwing. In other embodiments, to enhance the reliability of the connection between the first arcuate rib 3131 and the first wall panel 3111, the first arcuate rib 3131 and the first wall panel 3111 may be integrally formed. The connection between the second arcuate rib 3132 and the first wall panel 3111 can be designed similarly to the connection between the first arcuate rib 3131 and the first wall panel 3111, and will not be further described here.

[0145] See also Figure 11 The swing arm 32 includes a swing arm body 321 and a first matching portion 322. The first matching portion 322 is fixedly connected to the swing arm body 321. Specifically, the first matching portion 322 and the swing arm body 321 are arranged in the X-axis direction. The first matching portion 322 can be clamped between the first circular arc convex rib 3131 and the second circular arc convex rib 3132. In this way, it is convenient to achieve the sliding and rotational matching of the first matching portion 322 and the first circular arc guide rail 313, and the first circular arc convex rib 3131 and the second circular arc convex rib 3132 can limit the first matching portion 322 in the Z-axis direction, which can prevent the swing arm 32 from shaking during the rotation process, thereby improving the stability of the swing arm 32 during the rotation process relative to the first connecting member 31.

[0146] In this embodiment, the first mating portion 322 is also arc-shaped, and the center line of the first mating portion 322 is collinear with the first axis. This helps to increase the contact area between the first mating portion 322 and the first arc-shaped guide rail 313, further reducing the shaking of the swing arm 32 during the rotation process relative to the first connecting member 31.

[0147] In other embodiments, the first mating portion 322 may also include a cylindrical or block-shaped protrusion, and engage with the first arc-shaped guide rail 313 via the cylindrical or block-shaped protrusion. Alternatively, in still other embodiments, the first mating portion 322 may include an arc-shaped groove. In this case, the first arc-shaped guide rail 313 includes an arc-shaped rib that engages with the arc-shaped groove. This method can also achieve sliding and rotational engagement between the first mating portion 322 and the first arc-shaped guide rail 313.

[0148] In some embodiments, in order to improve the coordination stability between the swing arm 32 and the first connecting member 31, please refer to Figure 11 The first connecting member 31 further includes a second arc-shaped guide rail 314. Meanwhile, the swing arm 32 further includes a second mating portion 323. The first mating portion 322 and the second mating portion 323 are respectively disposed on opposite sides of the swing arm body 321 along the X-axis. The second arc-shaped guide rail 314 can be disposed on the second wall plate 3112.

[0149] The structure of the second arc-shaped guide rail 314 is identical to that of the first arc-shaped guide rail 313, and the structure of the second mating portion 323 may be identical to that of the first mating portion 322, which will not be described in detail here. Alternatively, in other embodiments, the first connector 31 may include the second mating portion 323, and the swing arm 32 may also include the second arc-shaped guide rail 314.

[0150] In some embodiments, please refer back to Figure 7 The first connecting member 31 is provided with a first avoidance hole 3123a, which is in communication with the first cavity. The swing arm body 321 is slidably engaged with the first avoidance hole 3123a. The first avoidance hole 3123a can be provided in the first top plate 312. For example, the first avoidance hole 3123a can be provided in the first connecting plate 3123. In this way, the swing arm 32 can slide into or out of the first cavity through the first avoidance hole 3123a, thereby facilitating the rotation of the swing arm 32 between the first position and the second position relative to the first connecting member 31.

[0151] On this basis, please continue to refer to Figure 7 The swing arm body 321 is arc-shaped, and the centerline of the swing arm body 321 is collinear with the centerline of the first mating portion 322. Specifically, in this embodiment, the swing arm 32 is in the shape of an arc-shaped plate, and one side edge of the swing arm 32 in the X-axis direction forms the first mating portion 322. This makes the rotation path of the swing arm 32 more regular. This not only reduces the opening size of the first avoidance hole 3123a, but also helps to improve the overall structural strength of the first connecting member 31. It also prevents interference with other structures during the rotation of the swing arm 32, thereby improving the space utilization of the rotating shaft mechanism 3.

[0152] In some embodiments, to improve the overall structural strength of the swing arm 32 and simplify the processing of the swing arm 32, the swing arm body 321 and the first mating portion 322 are integrally formed. For example, the swing arm body 321 and the first mating portion 322 can be formed by injection molding (including primary injection molding, secondary injection molding, insert molding, etc.), metal powder injection molding (MIM), stamping, hot forging, and other processes.

[0153] Of course, the embodiments of the present application are not limited to this. In other embodiments, the swing arm body 321 and the first matching portion 322 can also be fixedly connected by welding, bonding, screw connection, clamping, riveting, etc.

[0154] See also Figure 7 Specifically, the first matching portion 322 includes a first side end surface 3221 facing away from the swing arm body 321 , and the first rotating shaft 361 can be fixedly connected to the first side end surface 3221 and protrude from the first side end surface 3221 .

[0155] In some embodiments, the first rotating shaft 361 and the swing arm 32 are an integrated structure. Of course, the embodiments of the present application are not limited thereto. In other embodiments, the first rotating shaft 361 and the swing arm 32 can also be fixedly connected by welding, bonding, screw connection, clamping, riveting, etc.

[0156] See also Figure 7 The first shaft hole 362 is provided in the first side plate 3311. The first shaft hole 362 can be a through hole or a blind hole. The first rotating shaft 361 is rotatably engaged with the first shaft hole 362. This enables relative rotation between the second connecting member 33 and the swing arm 32, allowing the second connecting member 33 to rotate between a third position and a fourth position relative to the swing arm 32, thereby facilitating the switching of the rotating shaft mechanism 3 between different states, thereby enabling the folding and unfolding of the foldable electronic device 100.

[0157] On this basis, in order to improve the stability of the second connecting member 33 relative to the swing arm 32, please continue to refer to Figure 7 The rotating shaft mechanism 3 further includes a second rotating shaft 363 and a second shaft hole 364. The second rotating shaft 363 and the second shaft hole 364 are rotatably engaged, and the central axis of the second rotating shaft 363 is collinear with the central axis of the first rotating shaft 361. In this embodiment, the second rotating shaft 363 is disposed on the swing arm 32, and the second shaft hole 364 is disposed on the second connecting member 33. For example, the second shaft hole 364 can be disposed on the second side plate 3312. Of course, it is understood that in other embodiments, the second rotating shaft 363 can also be disposed on the second connecting member 33, and the second shaft hole 364 can be disposed on the swing arm 32.

[0158] The structure of the second rotating shaft 363 may be the same as that of the first rotating shaft 361 , and the structure of the second shaft hole 364 may be the same as that of the first shaft hole 362 , which will not be described in detail here.

[0159] In order to limit the rotation angle of the swing arm 32 relative to the first connecting member 31, please refer to Figure 7-Figure 8 The rotating shaft mechanism 3 further includes a first limiting assembly 371, which includes a first limiting protrusion 3711 and a first limiting hole 3712. The first limiting protrusion 3711 slidably engages with the first limiting hole 3712. The first limiting hole 3712 is an arc-shaped hole, and the center line of the first limiting hole 3712 is collinear with the first axis. The first limiting hole 3712 is a through hole.

[0160] In some embodiments, see Figure 7 The first limiting protrusion 3711 is provided on the swing arm 32, and the first limiting hole 3712 is provided on the first connecting member 31. For example, the first limiting hole 3712 can be provided on the first wall plate 3111. It is understood that in other embodiments, the first limiting protrusion 3711 can also be provided on the first connecting member 31, and the first limiting hole 3712 can be provided on the swing arm 32.

[0161] See also Figure 7 , the first limiting protrusion 3711 can protrude from the swing arm 32 along the first direction. In some embodiments, the first limiting protrusion 3711 can be fixedly connected to the first matching portion 322. Specifically, the first limiting protrusion 3711 can be fixedly connected to the first side end surface 3221 and protrude from the first side end surface 3221. The connection method between the first limiting protrusion 3711 and the swing arm 32 includes but is not limited to gluing, welding, clamping or screw connection. In other embodiments, in order to improve the connection reliability between the first limiting protrusion 3711 and the swing arm 32, the first limiting protrusion 3711 and the swing arm 32 can be an integrated structure.

[0162] See also Figure 7 The first limiting protrusion 3711 includes a first section 3711a and a second section 3711b. The first section 3711a is fixedly connected to the first mating portion 322. The first section 3711a can be located within the first limiting hole 3712, and the outer circumferential surface of the first section 3711a is configured to abut against the first hole wall 3712a. On this basis, to improve the smoothness of the sliding of the first limiting protrusion 3711 within the first limiting hole 3712, the first section 3711a can be cylindrical.

[0163] The second section 3711b is fixedly connected to the first section 3711a, and the second section 3711b and the first section 3711a are arranged in the first direction. For example, the second section 3711b is located on the side of the first section 3711a away from the swing arm 32. The second section 3711b can be located outside the first limiting hole 3712. In some embodiments, the second section 3711b is in the shape of a flat shaft. For details, please refer to Figure 7 The second section 3711b is provided with a flat surface portion 3711c. Specifically, the flat surface portion 3711c can be provided on one, two, three or four circumferential sides of the second section 3711b, which is not specifically limited here.

[0164] See also Figure 12-13 , Figure 12 for Figure 8 The exploded view of the rotating shaft mechanism 3 is shown. Figure 13 for Figure 6 The exploded view of the rotating shaft mechanism 3 is shown in the middle open state. Figure 13 In the intermediate open state shown, the swing arm 32 is located in the second position relative to the first connecting member 31, and the second connecting member 33 is located in the third position relative to the swing arm 32. The first limiting protrusion 3711 is provided in the first limiting hole 3712. The first limiting hole 3712 includes a first hole wall surface 3712a and a second hole wall surface 3712b, and the first hole wall surface 3712a and the second hole wall surface 3712b are spaced apart on the extension path of the first limiting hole 3712. The first hole wall surface 3712a can be formed as an arc surface or a plane. Similarly, the second hole wall surface 3712b can also be formed as an arc surface or a plane. Among them, the extension path of the first limiting hole 3712 refers to the arc-shaped extension path of the first limiting hole 3712.

[0165] See also Figure 12 When the swing arm 32 is located at the first position relative to the first connecting member 31, the first limiting protrusion 3711 abuts against the first hole wall 3712a. Figure 13When the swing arm 32 is in the second position relative to the first connecting member 31, the first limiting protrusion 3711 abuts against the second hole wall 3712b. Thus, when the swing arm 32 rotates to the first position relative to the first connecting member 31, the first hole wall 3712a cooperates with the first limiting protrusion 3711 to limit the swing arm 32 from further rotating toward the first hole wall 3712a. When the swing arm 32 rotates to the second position relative to the first connecting member 31, the second hole wall 3712b cooperates with the first limiting protrusion 3711 to limit the swing arm 32 from further rotating toward the second hole wall 3712b. This limits the rotation angle of the swing arm 32 relative to the first connecting member 31, prevents the swing arm 32 from disengaging from the first connecting member 31, and improves the connection reliability between the swing arm 32 and the first connecting member 31. In addition, through the cooperation between the first limiting protrusion 3711 and the first limiting hole 3712, the rotation of the swing arm 32 can be guided during the rotation process of the swing arm 32 relative to the first connecting member 31, which can improve the smoothness and stability of the rotation process of the swing arm 32 relative to the first connecting member 31.

[0166] In some embodiments, the central angle corresponding to the first limiting hole 3712 is greater than or equal to 80 degrees and less than or equal to 130 degrees. That is, when the swing arm 32 rotates from the first position to the second position relative to the first connecting member 31, the angle of rotation of the swing arm 32 relative to the first connecting member 31 (i.e., the first angle mentioned above) is greater than or equal to 80 degrees and less than or equal to 130 degrees. Exemplarily, the central angle corresponding to the first limiting hole 3712 can be 80 degrees, 85 degrees, 90 degrees, 95 degrees, 100 degrees, 105 degrees, 110 degrees, 115 degrees, 120 degrees, 125 degrees, 130 degrees, etc.

[0167] In this way, while ensuring the maximum opening and closing angle of the foldable electronic device 100, the arc length corresponding to the first limiting hole 3712 can be reduced. On the one hand, it is convenient to reserve a certain distance between the first hole wall 3712a of the first limiting hole 3712 and the edge of the first wall panel 3111, and between the second hole wall 3712b of the first limiting hole 3712 and the edge of the first wall panel 3111, which can avoid the first limiting hole 3712 passing through the edge of the first wall panel 3111, which is beneficial to improving the structural strength of the first connecting member 31; on the other hand, it can reduce the space occupied by the rotation path of the swing arm 32 in the first connecting member 31, which is beneficial to reducing the volume of the first connecting member 31, and then reduce the space occupied by the first connecting member 31 in the keyboard host 1, optimize the spatial layout of the keyboard host 1, and improve space utilization.

[0168] In some embodiments, see Figure 11The rotating shaft mechanism 3 further includes a second limiting assembly 372. Specifically, the second limiting assembly 372 includes a second limiting protrusion 3721 and a second limiting hole 3722. The second limiting protrusion 3721 is engaged with the second limiting hole 3722. The second limiting protrusion 3721 is spaced apart from the first limiting protrusion 3711 in the first direction. In this embodiment, the second limiting protrusion 3721 is provided on the swing arm 32, and the second limiting hole 3722 is provided on the first connecting member 31. It is understandable that in other embodiments, the second limiting protrusion 3721 may also be provided on the first connecting member 31, and the second limiting hole 3722 may be provided on the swing arm 32.

[0169] In some embodiments, the structure of the second limiting protrusion 3721 may be the same as that of the first limiting protrusion 3711, and the structure of the second limiting hole 3722 may be the same as that of the first limiting hole 3712. Detailed description is omitted here.

[0170] In this way, not only can the first limiting component 371 be used to limit and guide the rotation of the swing arm 32 relative to the first connecting member 31, but the second limiting component 372 can also be used to limit and guide the rotation of the swing arm 32 relative to the first connecting member 31, which can further improve the stability of the rotation of the swing arm 32 relative to the first connecting member 31.

[0171] Based on any of the above examples, please refer to Figure 11 The hinge mechanism 3 further includes a first damping assembly 381. The first damping assembly 381 is configured to provide a damping force when the swing arm 32 rotates relative to the first connecting member 31. This provides a damping feel when a user applies an external force to the display 2, causing the swing arm 32 to rotate relative to the first connecting member 31, thereby enhancing the user experience.

[0172] The first damping assembly 381 can be disposed on the first limiting protrusion 3711. For example, see Figure 11 The first damping assembly 381 is located on a side of the first connecting member 31 away from the swing arm 32 .

[0173] In some embodiments, see Figure 12-13 The first damping assembly 381 includes a first friction pad 3811, a first elastic member 3812 and a first stopper 3813. The first friction pad 3811 is fixed relative to the swing arm 32 and can rotate with the swing arm 32. For example, please refer to Figure 11 The first friction pad 3811 can be fixedly connected to the first limiting protrusion 3711. Specifically, the first friction pad 3811 can be fixedly connected to the second section 3711b of the first limiting protrusion 3711.

[0174] The surface of the first friction pad 3811 facing the first wall plate 3111 is configured to abut against the first wall plate 3111. For example, the surface of the first friction pad 3811 facing the first wall plate 3111 is flat. Thus, when the first friction pad 3811 rotates with the swing arm 32, friction between the first friction pad 3811 and the first wall plate 3111 creates damping.

[0175] The first friction pad 3811 is in the form of a sheet. For example, the first friction pad 3811 can be in the form of a circular sheet. This increases the contact area between the first friction pad 3811 and the first wall plate 3111, thereby reducing the pressure between the first friction pad 3811 and the first wall plate 3111, and further reducing the wear between the first friction pad 3811 and the first wall plate 3111.

[0176] The first friction pad 3811 can be a metal part. For example, the material of the first friction pad 3811 can be stainless steel, aluminum alloy, magnesium alloy, etc. These materials have high hardness, good wear resistance, and are easy to process.

[0177] In some embodiments, in order to facilitate the assembly of the first friction pad 3811 and the first limiting protrusion 3711 and ensure that the first friction pad 3811 can rotate with the rotation of the swing arm 32, please refer to Figure 12 The first friction pad 3811 is provided with a first assembly hole 3811a for cooperating with the first limiting protrusion 3711. The first assembly hole 3811a is a through hole, and the shape and size of the first assembly hole 3811a are adapted to the shape and size of the outer circumference of the second section 3711b.

[0178] The first elastic member 3812 is used to apply a force to the first friction pad 3811 toward the first wall plate 3111, so that the first friction pad 3811 maintains contact with the first wall plate 3111. Figure 11 The first elastic member 3812 can be sleeved on the first limiting protrusion 3711. The first elastic member 3812 can be extended and retracted along the first direction.

[0179] In some embodiments, see Figure 12 The first elastic member 3812 is a disc spring assembly comprising a plurality of disc springs 3812a arranged in a first direction. The disc springs 3812a are provided with second mounting holes 3812b, which are used to fit over the first limiting protrusion 3711. Exemplarily, the second mounting hole 3812b is a circular hole. When the swing arm 32 rotates, the first elastic member 3812 does not necessarily rotate with the swing arm 32. It is understood that in other embodiments, the first elastic member 3812 may alternatively be a spring, a torsion spring, or the like.

[0180] See also Figure 11The first stopper 3813 is disposed on the side of the first friction pad 3811 facing away from the first wall plate 3111. The first stopper 3813 is fixed relative to the swing arm 32 and abuts against the end of the first elastic member 3812 facing away from the first friction pad 3811. The first stopper 3813 is used to stop the first elastic member 3812. On the one hand, it compresses the first elastic member 3812, thereby applying a force toward the first wall plate 3111 to the first friction pad 3811. On the other hand, it prevents the first elastic member 3812 from slipping off the first stopper protrusion 3711.

[0181] In some embodiments, see Figure 11 Combined with Figure 12 The first stopper 3813 is an adjustment nut, which is threadedly connected to the first stopper protrusion 3711. Rotating the adjustment nut adjusts the compression of the first elastic member 3812, and thus the force exerted by the first elastic member 3812 on the first friction pad 3811. This allows the initial rotational damping provided by the first damping assembly 381 to be adjusted, thereby meeting the requirements of different damping scenarios and providing a wide range of applications.

[0182] It is understandable that the structure of the first damping assembly 381 is not limited thereto, as long as the first damping assembly 381 can provide a damping force during the rotation of the swing arm 32 relative to the first connecting member 31 .

[0183] For further information, see Figure 11 and Figure 12 The rotating shaft mechanism 3 further includes a second damping assembly 382. The second damping assembly 382 and the first damping assembly 381 are disposed on opposite sides of the swing arm 32. The second damping assembly 382 is configured to provide a damping force when the swing arm 32 rotates relative to the first connecting member 31. This improves the damping symmetry during the rotation of the swing arm 32 relative to the first connecting member 31, further enhancing the damping feel of the rotating shaft mechanism 3 during rotation.

[0184] See also Figure 11 , the second damping assembly 382 is arranged on the second limiting protrusion 3721. Specifically, the second damping assembly 382 includes a second friction pad 3821, a second elastic member 3822 and a second limiting member 3823. Among them, the structure of the second friction pad 3821, the structure of the second elastic member 3822 and the structure of the second limiting member 3823 can be respectively the same as the structure of the first friction pad 3811, the structure of the first elastic member 3812 and the structure of the first limiting member 3813. At the same time, the working principle of the second damping assembly 382 can be the same as the working principle of the first damping assembly 381, which will not be repeated here. It can be understood that in other embodiments, the rotating shaft mechanism 3 may also not include the second damping assembly 382.

[0185] On the basis of any of the above embodiments, in order to limit the rotation angle of the second connecting member 33 relative to the swing arm 32, please refer to Figure 13-14 , Figure 14 for Figure 6 Another exploded view of the rotating shaft mechanism 3 is shown. The rotating shaft mechanism 3 also includes a third limiting assembly 373, which includes a third limiting protrusion 3731 and a third limiting hole 3732. The third limiting protrusion 3731 slidably engages with the third limiting hole 3732. The third limiting hole 3732 is an arc-shaped hole, and the centerline of the third limiting hole 3732 is collinear with the second axis. In other words, the centerline of the third limiting hole 3732 is collinear with the central axis of the first rotating shaft 361.

[0186] See also Figure 15a , Figure 15a for Figure 7 A three-dimensional view of the swing arm 32 in the rotating shaft mechanism 3 is shown. The third limiting protrusion 3731 is provided on the swing arm 32. In some embodiments, an extension plate 39 is provided on the swing arm 32, and the third limiting protrusion 3731 can be fixedly connected to the extension plate 39. The extension plate 39 can be located on the side of the first rotating shaft 361 away from the first limiting protrusion 3711. The extension plate 39 includes a second side end face 391, and the orientation of the second side end face 391 is the same as the orientation of the first side end face 3221 of the first matching portion 322. The third limiting protrusion 3731 is fixedly connected to the second side end face 391 and protrudes from the second side end face 391. The structure of the third limiting protrusion 3731 and the way in which the third limiting protrusion 3731 is connected to the extension plate 39 can be designed with reference to the structure of the first limiting protrusion 3711 and the way in which the first limiting protrusion 3711 is connected to the swing arm 32, and will not be described in detail here.

[0187] In some embodiments, see Figure 15b , Figure 15b for Figure 14 The figure shows the assembly diagram of the swing arm 32 and the second connecting member 33 in the rotating shaft mechanism 3. The extension plate 39 is located between the second top plate 332 and the second bottom plate 333. In this way, the third limiting protrusion 3731 is conveniently matched with the third limiting hole 3732.

[0188] On this basis, in order to facilitate the assembly of the swing arm 32 and the second connecting member 33, the second connecting member 33 is provided with a second avoidance hole 336, and the swing arm 32 can be passed through the second avoidance hole 336. For example, the second avoidance hole 336 can be opened in the third side plate 3313.

[0189] The third limiting hole 3732 is provided on the second connecting member 33. The third limiting hole 3732 may be a through hole. The third limiting protrusion 3731 is provided through the third limiting hole 3732. For example, the third limiting hole 3732 is provided on the first side plate 3311. It is understood that in other embodiments, the third limiting protrusion 3731 may be provided on the second connecting member 33, and the third limiting hole 3732 may be provided on the swing arm 32.

[0190] The third limiting hole 3732 includes a third hole wall surface 3732a and a fourth hole wall surface 3732b. The third hole wall surface 3732a and the fourth hole wall surface 3732b are spaced apart from each other along the extension path of the third limiting hole 3732. The extension path of the third limiting hole 3732 refers to the arc-shaped extension path of the third limiting hole 3732. The third hole wall surface 3732a can be formed as a curved surface or a flat surface. Similarly, the fourth hole wall surface 3732b can also be formed as a curved surface or a flat surface.

[0191] exist Figure 13 In the schematic diagram shown, the second connecting member 33 is located at the third position relative to the swing arm 32. At this time, the third limiting protrusion 3731 abuts against the third hole wall 3732a. Figure 14 In the schematic diagram shown, the second connecting member 33 is located in the fourth position relative to the swing arm 32, at which point the third limiting protrusion 3731 abuts against the fourth hole wall 3732b. Thus, when the second connecting member 33 reaches the third position relative to the swing arm 32, the third hole wall 3732a cooperates with the third limiting protrusion 3731 to restrict the second connecting member 33 from further rotating toward the third hole wall 3732a relative to the swing arm 32. When the second connecting member 33 reaches the fourth position relative to the swing arm 32, the fourth hole wall 3732b cooperates with the third limiting protrusion 3731 to restrict the swing arm 32 from further rotating toward the fourth hole wall 3732b, thereby limiting the rotation angle of the second connecting member 33 relative to the swing arm 32.

[0192] In some embodiments, the central angle corresponding to the third limiting hole 3732 is greater than or equal to 20 degrees and less than or equal to 70 degrees. That is, when the second connecting member 33 rotates relative to the swing arm 32 from the third position to the fourth position, the angle at which the display 2 rotates relative to the keyboard host 1 (i.e., the second angle mentioned above) is greater than or equal to 20 degrees and less than or equal to 70 degrees. For example, the central angle corresponding to the third limiting hole 3732 can be 20 degrees, 25 degrees, 30 degrees, 35 degrees, 40 degrees, 45 degrees, 50 degrees, 55 degrees, 60 degrees, 65 degrees, 70 degrees, etc.

[0193] In this way, while ensuring the maximum opening and closing angle of the foldable electronic device 100, the arc length corresponding to the third limiting hole 3732 can be reduced. On the one hand, it is convenient to reserve a certain distance between the third hole wall 3732a of the third limiting hole 3732 and the edge of the first side panel 3311, and between the fourth hole wall 3732b of the third limiting hole 3732 and the edge of the first side panel 3311, which can avoid the third limiting hole 3732 passing through the edge of the first side panel 3311, which is beneficial to improving the structural strength of the second connecting member 33.

[0194] In some embodiments, see Figure 16 , Figure 16 for Figure 8 The cross-sectional view of the rotating shaft mechanism 3 at line CC is shown. The rotating shaft mechanism 3 also includes a fourth limiting component 374. The fourth limiting component 374 is arranged in the first direction with the third limiting component 373. Specifically, the fourth limiting component 374 includes a fourth limiting protrusion 3741 and a fourth limiting hole 3742. The fourth limiting protrusion 3741 is matched with the fourth limiting hole 3742. The fourth limiting hole 3742 can be provided on the second side plate 3312. The structure of the fourth limiting protrusion 3741 can be the same as that of the third limiting protrusion 3731, and the structure of the fourth limiting hole 3742 can be the same as that of the third limiting hole 3732. No further detailed description is given here. In this way, not only can the third limiting component 373 be used to limit and guide the rotation of the second connecting member 33 relative to the swing arm 32, but the fourth limiting component 374 can also be used to limit and guide the rotation of the second connecting member 33 relative to the swing arm 32, which can further improve the stability of the rotation of the second connecting member 33 relative to the swing arm 32.

[0195] See also Figure 13-14 The hinge mechanism 3 also includes a third damping assembly 383. The third damping assembly 383 is used to provide a damping force when the second connecting member 33 rotates relative to the swing arm 32. For example, the third damping assembly 383 can be disposed on the third limiting protrusion 3731. This creates a damping effect when a user applies an external force to the display 2, causing the second connecting member 33 to rotate relative to the swing arm 32, thereby enhancing the user experience.

[0196] For details, please refer to Figure 14 The third damping assembly 383 includes a third friction pad 3831, a third elastic member 3832 and a third limit member 3833. The third friction pad 3831 is fixed relative to the second connecting member 33 and can rotate relative to the swing arm 32 along with the second connecting member 33. For example, please refer to Figure 16The third friction pad 3831 can be fixedly connected to the third limiting protrusion 3731. The third elastic member 3832 is mounted on the third limiting protrusion 3731 to apply a force to the third friction pad 3831 toward the first side plate 3311, thereby maintaining contact between the third friction pad 3831 and the first wall plate 3111. The third limiting member 3833 is disposed on the side of the third friction pad 3831 facing away from the third wall plate 3113. The third limiting member 3833 is fixed relative to the second connecting member 33 and abuts against the end of the third elastic member 3832 facing away from the third friction pad 3831.

[0197] The structures of the third friction pad 3831, the third elastic member 3832, and the third stopper 3833 can be the same as the structures of the first friction pad 3811, the first elastic member 3812, and the first stopper 3813, respectively. The operating principle of the third damping structure is the same as that of the first damping structure and will not be further described here.

[0198] For further information, see Figure 16 The rotating shaft mechanism 3 further includes a fourth damping assembly 384, which is disposed on the fourth limiting protrusion 3741. The fourth damping assembly 384 is configured to provide a damping force when the second connecting member 33 rotates relative to the swing arm 32. This improves the damping symmetry during the rotation of the second connecting member 33 relative to the swing arm 32, further enhancing the damping feel of the rotating shaft mechanism 3 during rotation.

[0199] Specifically, the fourth damping assembly 384 includes a fourth friction pad 3841, a fourth elastic member 3842, and a fourth stopper 3843. The structures of the fourth friction pad 3841, the fourth elastic member 3842, and the fourth stopper 3843 may be identical to those of the third friction pad 3831, the third elastic member 3832, and the third stopper 3833, respectively. The operating principle of the fourth damping assembly 384 may be identical to that of the third damping assembly 383 and will not be further described here. It is understood that in other embodiments, the rotating shaft mechanism 3 may not include the fourth damping assembly 384.

[0200] The damping force between the swing arm 32 and the first connecting member 31 of both the door panel and the supporting door panel is less than the damping force between the second connecting member 33 and the swing arm 32. In this embodiment, the damping force between the swing arm 32 and the first connecting member 31 may be equal to the sum of the damping force provided by the first damping assembly 381 and the damping force provided by the second damping assembly 382. The damping force between the second connecting member 33 and the swing arm 32 may be equal to the sum of the damping forces provided by the third damping assembly 383 and the fourth damping assembly 384.

[0201] In this way, when the hinge mechanism 3 switches from the folded state to the fully opened state, the virtual axis rotation stroke can be performed first, and then the real axis rotation stroke can be performed. In this way, interference between the display 2 and the keyboard host 1 can be avoided during the switching of the foldable electronic device 100 from the fully opened state to the folded state.

[0202] See also Figure 17 , Figure 17 for Figure 6 Schematic diagrams of the rotating shaft mechanism 3 in different states are shown. In order to clearly illustrate the positions of the swing arm 32 and the second connecting member 33 of the rotating shaft mechanism 3 in different states, Figure 17 The first damping assembly 381 and the third damping assembly 383 are omitted in the schematic diagrams. In some embodiments, when the rotating shaft mechanism 3 is switched from the folded state to the fully opened state, the rotating shaft mechanism 3 may first be Figure 17 The folded state shown in (a) is switched to Figure 17 During this process, the swing arm 32 and the second connecting member 33 remain relatively fixed, and the swing arm 32 rotates from the first position to the second position relative to the first connecting member 31. Figure 17 The intermediate open state shown in (b) is switched to Figure 17 During this process, the swing arm 32 and the first connecting member 31 remain relatively fixed, and the second connecting member 33 rotates from the third position to the fourth position relative to the swing arm 32.

[0203] That is, when the hinge mechanism 3 switches from the folded state to the fully opened state, it first rotates along the virtual axis and then along the real axis. This prevents interference between the display 2 and the keyboard host 1 during the switching of the foldable electronic device 100 from the folded state to the fully opened state.

[0204] On the basis of any of the above embodiments, in order to enable the rotating shaft mechanism 3 to first perform a real axis rotation stroke and then a virtual axis rotation stroke when switching from a fully opened state to a folded state, please refer to Figure 18 , Figure 18 for Figure 10The cross-sectional view of the rotating shaft mechanism 3 at line DD is shown. The rotating shaft mechanism 3 also includes a magnetic component 301, and the magnetic component 301 includes a first magnetic component 3011 and a second magnetic component 3012. The first magnetic component 3011 is arranged on the first connecting member 31, and the second magnetic component 3012 is arranged on the swing arm 32, and can rotate synchronously with the swing arm 32. When the swing arm 32 is in the second position relative to the first connecting member 31, the first magnetic component 3011 and the second magnetic component 3012 are magnetically matched. Among them, one of the first magnetic component 3011 and the second magnetic component 3012 can be a magnet, and the other of the first magnetic component 3011 and the second magnetic component 3012 can be a magnetic metal component (for example, an iron component, a stainless steel component, etc.) that can magnetically match the magnet, or the first magnetic component 3011 and the second magnetic component 3012 are both magnets. Therefore, when the swing arm 32 is in the second position relative to the first connecting member 31 , the swing arm 32 can be limited by the cooperation of the first magnetic member 3011 and the second magnetic member 3012 .

[0205] In this way, when the swing arm 32 rotates from the second position to the first position relative to the first connecting member 31, the swing arm 32 must not only overcome the damping force between the swing arm 32 and the first connecting member 31, but also overcome the magnetic attraction between the first magnetic member 3011 and the second magnetic member 3012. This can increase the external force used to drive the swing arm 32 to rotate relative to the first connecting member 31 during the switching process of the hinge mechanism 3 from the fully open state to the folded state. In addition, when switching from the fully open state to the folded state, the real axis rotation stroke can be performed first, and then the virtual axis rotation stroke can be performed. In this way, interference between the display 2 and the keyboard host 1 can be avoided during the switching process of the foldable electronic device 100 from the fully open state to the folded state.

[0206] For details, please refer to Figure 17 In the process of switching the rotating shaft mechanism 3 from the fully opened state to the folded state, the rotating shaft mechanism 3 can first be Figure 17 The folded state shown in (c) is switched to Figure 17 During this process, the swing arm 32 and the first connecting member 31 remain relatively fixed, and the second connecting member 33 rotates from the fourth position to the third position relative to the swing arm 32. Figure 17 The intermediate open state shown in (b) is switched to Figure 17 The folded state is shown in (a) of FIG. During this process, the swing arm 32 and the second connecting member 33 remain relatively fixed, and the swing arm 32 rotates from the second position to the first position relative to the first connecting member 31. That is, when the foldable electronic device 100 switches from the fully opened state to the folded state, after the second connecting member 33 rotates from the fourth position to the third position relative to the swing arm 32, the swing arm 32 then rotates from the second position to the first position relative to the first connecting member 31.

[0207] In some embodiments, see Figure 18 , the first magnetic member 3011 can be set on the first wall plate 3111, and the second magnetic member 3012 can be set on the first limiting protrusion 3071. It is understandable that the setting positions of the first magnetic member 3011 and the second magnetic member 3012 are not limited to this. For example, in other embodiments, when the first magnetic member 3011 is set on the first wall plate 3111, the second magnetic member 3012 can also be set on the first matching portion 322 of the swing arm 32. As long as it can be ensured that the first magnetic member 3011 and the second magnetic member 3012 are magnetically matched when the swing arm 32 is in the second position relative to the first connecting member 31, it can be sufficient.

[0208] In some embodiments, in order to increase the damping force during the rotation of the second connecting member 33 relative to the swing arm 32, please refer to Figure 19-20 , Figure 19 for Figure 6 The three-dimensional diagram of the rotating shaft mechanism 3 in the middle open state is shown. Figure 20 for Figure 19 The enlarged view of the rotating shaft mechanism 3 in the B area is shown. Figure 19 In the rotating shaft mechanism 3 shown, the swing arm 32 is in the second position relative to the first connecting member 31 , and the second connecting member 33 is in the third position relative to the swing arm 32 .

[0209] For details, please refer to Figure 19-20 The first side plate 3311 includes a side plate body 3311a and an abutment boss 3311b. The abutment boss 3311b is disposed on a side surface of the side plate body 3311a facing away from the swing arm 32 and is located on the periphery of the third limiting hole 3732. The surface of the abutment boss 3311b facing away from the side plate body 3311a is configured to abut against the third friction pad 3831. When the second connecting member 33 is in the third position relative to the swing arm 32, the abutment boss 3311b is located on a side of the third damping assembly 383 facing away from the third hole wall 3732a. Specifically, when the second connecting member 33 is in the third position relative to the swing arm 32, the abutment boss 3311b is located on a side of the third friction pad 3831 facing away from the third hole wall 3732a.

[0210] In this way, when the hinge mechanism 3 switches from the folded state to the fully open state, the cooperation between the abutment boss 3311b and the third friction pad 3831 can limit the second connecting member 33 from rotating from the third position to the fourth position relative to the swing arm 32, so that the swing arm 32 can first rotate from the first position to the second position relative to the first connecting member 31, which is convenient for controlling the sequence of the virtual axis rotation stroke and the real axis rotation stroke, thereby avoiding interference between the display 2 and the keyboard host 1 during the process of switching the foldable electronic device 100 from the folded state to the fully open state.

[0211] In some embodiments, see Figure 20 The abutment boss 3311b includes a first guide segment L1, a first abutment segment L2, a connecting segment L3, a second abutment segment L4, and a second guide segment L5. The first abutment segment L2 and the second abutment segment L4 are located on opposite sides of the third limiting hole 3732. The connecting segment L3 connects between the first abutment segment L2 and the second abutment segment L4 and is located on the side of the fourth hole wall 3732b facing away from the third hole wall 3732a. Specifically, the abutment boss 3311b can be generally U-shaped.

[0212] The first guide segment L1 is located at one end of the first abutment segment L2 near the third hole wall 3732a and between the third hole wall 3732a and the fourth hole wall 3732b. In a direction from the third hole wall 3732a to the fourth hole wall 3732b, the first guide segment L1 extends away from the side plate body 3311a, forming a first guide surface. The second guide segment L5 extends away from the side plate body, forming a second guide surface. As a result, when the hinge mechanism 3 switches from the folded state to the fully opened state, when the swing arm 32 rotates relative to the first connecting member 31 to the second position, the third friction pad 3831 can slide toward the first abutment segment L2 under the guidance of the first guide surface and can slide toward the second abutment segment L4 under the guidance of the second guide surface, thereby facilitating the abutment engagement between the third friction pad 3831 and the first side plate 3311.

[0213] It is understandable that, in other embodiments, the abutting boss 3311b may not include the second abutting section L4 and at least one of the connecting section L3 and the second guiding section L5.

[0214] On the basis of any of the above embodiments, since the first limiting protrusion 3711 protrudes from the swing arm 32 or the first wall plate 3111, when the swing arm 32 is assembled to the first connecting member 31, there is interference between the first limiting protrusion 3711 and the swing arm 32 or the first wall plate 3111. On this basis, in order to reduce the difficulty of assembling the swing arm 32 and the first connecting member 31, please refer to Figure 21 , Figure 21 for Figure 6 The exploded view of the first connecting member 31 in the rotating shaft mechanism 3 is shown. The first connecting member 31 includes a first split portion 31a and a second split portion 31b. The first split portion 31a and the second split portion 31b are connected in a first direction (eg Figure 21The first split portion 31a includes a first limiting hole 3712, and the second split portion 31b includes a second limiting hole 3722. It is understood that in other embodiments, the first split portion 31a may also include a first limiting protrusion 3711.

[0215] The first split portion 31a is fixedly connected to the second split portion 31b, and the first split portion 31a and the second split portion 31b are separate components. In other words, the first split portion 31a and the second split portion 31b are independently molded components. In this way, the first split portion 31a and the second split portion 31b can be independently processed and molded, and then the first split portion 31a and the second split portion 31b can be fixedly connected to form a single unit.

[0216] For example, when assembling the swing arm 32 and the first connecting member 31, the swing arm 32 can first be assembled to the first split portion 31a, such that the first limiting protrusion 3711 mates with the first limiting hole 3712; then, the second split portion 31b is assembled to the swing arm 32, such that the second limiting protrusion 3721 mates with the second limiting hole 3722; finally, the second split portion 31b is fixedly connected to the first split portion 31a. For another example, when assembling the swing arm 32 and the first connecting member 31, the first split portion 31a and the second split portion 31b can be assembled to the swing arm 32 separately along the first direction. This reduces the difficulty of assembling the swing arm 32 and the first connecting member 31, thereby improving the assembly efficiency of the hinge mechanism 3. Furthermore, the first connecting member 31 and the swing arm 32 can be assembled to the keyboard host 1 as a whole, thereby improving the assembly efficiency of the foldable electronic device 100.

[0217] In some embodiments, see Figure 21 The first split portion 31a is provided with a first fixing ear 3151, the first fixing ear 3151 is provided with a first fixing hole 3151a, the second split portion 31b is provided with a second fixing ear 3152, the second fixing ear 3152 is provided with a second fixing hole 3152a corresponding to the first fixing hole 3151a, screws and other fasteners ( Figure 21 The first fixing hole 3151a and the second fixing hole 3152a are provided with a plurality of holes (not shown) to achieve a fixed connection between the first split portion 31a and the second split portion 31b. The structure is simple and the assembly is convenient.

[0218] It is understandable that, in other embodiments, the first split portion 31 a and the second split portion 31 b may also be fixedly connected by welding, bonding, clamping, riveting, or the like.

[0219] For example, see Figure 21The first split portion 31a includes a first wall panel 3111, a first sub-panel 312a, a second sub-panel 3113a, and a third sub-panel 3114a. The second split portion 31b includes a second wall panel 3112, a fourth sub-panel 312b, a fifth sub-panel 3113b, and a sixth sub-panel 3114b. The first sub-panel 312a and the fourth sub-panel 312b are joined to form the first top panel 312. The second sub-panel 3113a and the fifth sub-panel 3113b are joined to form the third wall panel 3113. The third sub-panel 3114a and the sixth sub-panel 3114b are joined to form the fourth wall panel 3114. The second sub-panel 3113a and the third sub-panel 3114a can both be provided with first fixing ears 3151, and the fifth sub-panel 3113b and the sixth sub-panel 3114b can both be provided with second fixing ears 3152. This facilitates assembly between the swing arm 32 and the first connector 31.

[0220] In some embodiments, the first split portion 31a and the second split portion 31b are symmetrically arranged in the first direction, so as to improve the symmetry of the first connecting member 31, improve the uniformity of the first connecting member 31, and facilitate production and assembly.

[0221] It is understood that in other embodiments, at least one of the first top panel 312, the third wall panel 3113, and the fourth wall panel 3114 may be disposed on the first split portion 31a, as long as the first split portion 31a includes the first wall panel 3111 and the second split portion 31b includes the second wall panel 3112.

[0222] In some embodiments, since the first rotating shaft 361 protrudes from the swing arm 32 or the first side plate 3311, when the swing arm 32 is assembled to the second connecting member 33, there is interference between the first rotating shaft 361 and the swing arm 32 or the first side plate 3311. On this basis, in order to reduce the difficulty of assembling the swing arm 32 and the second connecting member 33, please refer to Figure 22 , Figure 22 for Figure 6 An exploded view of the second connecting member 33 in the rotating shaft mechanism 3 is shown. The second connecting member 33 includes a third sub-section 33a and a fourth sub-section 33b, which are arranged in the first direction. The third sub-section 33a includes a first side plate 3311, and the fourth sub-section 33b includes a second side plate 3312.

[0223] The fourth sub-body 33b is fixedly connected to the third sub-body 33a, and the fourth sub-body 33b and the third sub-body 33a are separate parts. In other words, the third sub-body 33a and the fourth sub-body 33b are independently processed and formed, and then the third sub-body 33a and the fourth sub-body 33b are fixedly connected to form a whole.

[0224] For example, when assembling the swing arm 32 and the second connecting member 33, the swing arm 32 can first be assembled to the third sub-body 33a, such that the first rotation axis 361 mates with the first axis hole 362; then, the fourth sub-body 33b is assembled to the swing arm 32, such that the second rotation axis 363 mates with the second axis hole 364; finally, the fourth sub-body 33b is fixedly connected to the third sub-body 33a. For another example, when assembling the swing arm 32 and the second connecting member 33, the third sub-body 33a and the fourth sub-body 33b can be assembled to the swing arm 32 separately along the first direction. This reduces the difficulty of assembling the swing arm 32 and the second connecting member 33, thereby improving the assembly efficiency of the hinge mechanism 3. Furthermore, the second connecting member 33 and the swing arm 32 can be assembled to the display 2 as a whole, thereby improving the assembly efficiency of the foldable electronic device 100.

[0225] In some embodiments, see Figure 22 The third sub-body 33a is provided with a first positioning structure 3341, and the fourth sub-body 33b is provided with a second positioning structure 3342. In this embodiment, the first positioning structure 3341 is a positioning post, and the second positioning structure 3342 is a positioning hole. The positioning post and the positioning hole engage to securely connect the third sub-body 33a and the fourth sub-body 33b. This simple structure facilitates assembly.

[0226] It is understandable that, in other embodiments, the third sub-body portion 33a and the fourth sub-body portion 33b may also be fixedly connected by welding, bonding, screw connection, riveting, etc.

[0227] For example, see Figure 22 The third sub-section 33a includes a first side panel 3311, a first sub-panel 332a, a second sub-panel 3313a, a third sub-panel 3314a, and a fourth sub-panel 333a. The second sub-section 31b includes a second side panel 3312, a fifth sub-panel 332b, a sixth sub-panel 3313b, a seventh sub-panel 3314b, and an eighth sub-panel 333b. The first sub-panel 332a and the fifth sub-panel 332b are joined to form the second top panel 332. The second sub-panel 3313a and the sixth sub-panel 3313b are joined to form the third side panel 3313. The third sub-panel 3314a and the seventh sub-panel 3314b are joined to form the fourth side panel 3314. The fourth sub-panel 333a and the eighth sub-panel 333b are joined to form the second bottom panel 333. The first positioning structure 3341 can be provided on the second sub-panel 3313a, and the second positioning structure 3342 can be provided on the sixth sub-panel 3313b. In this way, the assembly between the swing arm 32 and the first connecting member 31 is facilitated.

[0228] In some embodiments, the third split portion 33a and the fourth split portion 33b are symmetrically arranged in the first direction, so as to improve the symmetry of the second connecting member 33, improve the uniformity of the second connecting member 33, and facilitate production and assembly.

[0229] It is understood that in other embodiments, at least one of the second top plate 332, the third side plate 3313, and the fourth side plate 3314 may be disposed on the third sub-body 33a, as long as the third sub-body 33a includes the first side plate 3311 for disposing the first shaft hole 362 or the first rotating shaft 361.

[0230] See also Figure 23 , Figure 23 for Figure 1 An exploded view of the foldable electronic device 100 is shown. The first housing 11 is provided with a first assembly cavity 113 for assembling the first connector 31. A portion of the first assembly cavity 113 is located in the first portion 111 of the first housing 11, while another portion is located in the second portion 112 of the first housing 11. It is understood that in other embodiments, the entire first assembly cavity 113 may be located in the second portion 112, as long as at least a portion of the first assembly cavity 113 is located in the second portion 112 of the first housing 11.

[0231] Since the size of the second part 112 in the Z-axis direction (also referred to as the thickness of the second part 112) is greater than the size of the first part 111 in the Z-axis direction (also referred to as the thickness of the first part 111), by setting at least a part of the first assembly cavity 113 in the second part 112 of the first shell 11, the restriction of the size of the first assembly cavity 113 on the structure of the first connecting part 31 can be reduced, the space utilization of the foldable electronic device 100 can be improved, and the design difficulty of the first connecting part 31 can be reduced.

[0232] In some embodiments, see Figure 24 , Figure 24 for Figure 23 The exploded view shown is an enlarged view of the C area. The first assembly cavity 113 includes a first opening 1131. The first opening 1131 passes through the first end surface 1121 of the second part 112. In this embodiment, the first opening 1131 also passes through the first side surface 1123 and the first surface 1111 of the first part 111. In this way, on the one hand, it is beneficial to increase the size of the first assembly cavity 113 in the Z-axis direction, which can reduce the restrictions of the size of the first assembly cavity 113 in the Z-axis direction on the structure of the first connecting member 31, and can improve the space utilization of the foldable electronic device 100, thereby helping to reduce the design difficulty of the first connecting member 31; on the other hand, it can reduce the difficulty of assembling the hinge mechanism 3 and the keyboard host 1.

[0233] See also Figure 25 , Figure 25 for Figure 1 The figure shows an assembly diagram of the keyboard host 1 and the first connecting member 31 in the foldable electronic device 100. The first top plate 312 of the first connecting member 31 is sealed in the first opening 1131. In this way, on the one hand, the waterproof performance of the first shell 11 can be improved; on the other hand, the overlapping size of the first connecting member 31 and the first shell 11 in the Z-axis direction can be reduced, which is conducive to reducing the thickness of the keyboard host 1 and realizing the lightweight design of the foldable electronic device 100; on the other hand, when the hinge mechanism 3 is assembled to the keyboard host 1, interference between the first shell 11 and the swing arm 32 can be avoided, so that the swing arm 32 and the first connecting member 31 can be assembled into a whole, and then the swing arm 32 and the first connecting member 31 can be assembled as a whole to the first shell 11, which can reduce the difficulty of assembling the hinge mechanism 3 and the first shell 11.

[0234] Further, referring to FIG. 25 , the first top surface 3121a of the first connector 31 is coplanar with the first end surface 1121, and the second top surface 3122a is coplanar with the first surface 1111. The first connecting surface 3123a is coplanar with the first side surface 1123. This makes the appearance of the foldable electronic device 100 more beautiful.

[0235] It is understood that in other embodiments, the first opening 1131 may not be provided on the first housing 11. In this case, the first connecting member 31 may not be provided with the first top plate 312. This can also reduce the overlapped dimension of the first connecting member 31 and the first housing 11 in the Z-axis direction, thereby reducing the thickness of the keyboard host 1 and achieving a lightweight and thin design for the foldable electronic device 100.

[0236] In some embodiments, see Figure 26 , Figure 26 for Figure 1 An exploded view of the keyboard host 1 and first connector 31 in the foldable electronic device 100 is shown. The first assembly cavity 113 includes a second opening 1132 that extends through the second end surface 1122 of the first portion 111. In this embodiment, the second opening 1132 also extends through the second surface 1112 of the second portion 112. The first connector 31 can be assembled into the first assembly cavity 113 through the second opening 1132.

[0237] See also Figure 26The first housing 11 is provided with a groove 114. The groove 114 includes a first notch 1141 and a first groove bottom wall 1142. The first notch 1141 is located circumferentially outward of the second opening 1132 and communicates with the second opening 1132. The first notch 1141 is opposite to the first groove bottom wall 1142. In other words, the first groove bottom wall 1142 is oriented in the same direction as the second end surface 1122.

[0238] The first connector 31 is provided with a first fixing plate 316, which supports and is fixed to the first groove bottom wall 1142. In some embodiments, the first fixing plate 316 and the first groove bottom wall 1142 can be connected by fasteners such as screws. In other embodiments, the first fixing plate 316 and the first groove bottom wall 1142 can also be fixedly connected by bonding, welding, clamping, etc.

[0239] For further information, see Figure 26 The first housing 11 is further provided with a first avoidance groove 115 and a second avoidance groove 116. The first avoidance groove 115 is used to accommodate the first damping assembly 381, and the second avoidance groove 116 is used to accommodate the second damping assembly 382. The first avoidance groove 115 and the second avoidance groove 116 are both connected to the first assembly cavity. For details, please refer to Figure 26 The third avoidance groove includes a second notch 1151, which is oriented in the same direction as the second opening 1132 and communicates with the second opening 1132. The second avoidance groove 116 includes a third notch 1161, which is oriented in the same direction as the second opening 1132 and communicates with the second opening 1132. Thus, when the rotating shaft mechanism 3 is assembled to the first housing 11, the first damping assembly 381 can be avoided by the first avoidance groove 115, and the second damping assembly 382 can be avoided by the second avoidance groove 116, thereby reducing the difficulty of assembling the rotating shaft mechanism 3.

[0240] See also Figure 26 The foldable electronic device 100 further includes a first cover plate 13, which is used to cover the first opening 1131. Figure 27 , Figure 27 for Figure 26 , a schematic diagram of the assembly of the first cover plate 13 and the first housing 11 is shown in FIG. The first cover plate 13 can be sealed at the second opening 1132. This prevents liquid, dust, etc. from entering the first housing 11 through the second opening 1132, thereby improving the waterproof and dustproof performance of the foldable electronic device 100.

[0241] The first cover plate 13 is detachably connected to the first housing 11. Exemplarily, the assembly method of the first cover plate 13 and the first housing 11 includes but is not limited to at least one of a snap connection and a screw connection.

[0242] Furthermore, the first cover plate 13 can also be sealed at the first notch 1141, the second notch 1151 and the third notch 1161. In this way, the waterproof and dustproof performance of the foldable electronic device 100 can be further improved.

[0243] See also Figure 28 , Figure 28 for Figure 1 A partial exploded view of the display 2 in the foldable electronic device 100 is shown. A second assembly cavity 213 is provided on the second housing 21. The second assembly cavity 213 can be used to accommodate the second connector 33. The second assembly cavity 213 includes a third opening 2131 and a fourth opening 2132. The third opening 2131 extends through the third surface 211, and the fourth opening 2132 extends through the second side surface 212. The second connector 33 can be assembled into the second assembly cavity 213 from the third opening 2131 and the fourth opening 2132. It will be appreciated that in other embodiments, the second assembly cavity 213 may include only one of the third opening 2131 and the fourth opening 2132.

[0244] See also Figure 29 , Figure 29 for Figure 1 , an enlarged view of the D region of the foldable electronic device 100 is shown in FIG. In some embodiments, the second bottom plate 333 blocks the third opening 2131, and the third side plate 3313 blocks the fourth opening 2132. This allows the second connecting member 33 to be assembled into the second assembly cavity 213 after the swing arm 32 is assembled into the second connecting member 33, thereby reducing the difficulty of assembling the foldable electronic device 100 and improving its assembly efficiency. Furthermore, it also reduces the overlap between the second connecting member 33 and the first housing 11, thereby reducing the thickness of the display 2.

[0245] In some embodiments, see Figure 29 The second bottom plate 333 includes a second bottom surface 3331, and the third side plate 3313 includes a third side surface 3313a. The second bottom surface 3331 is coplanar with the third surface 211, and the third side surface 3313a is coplanar with the second side surface 212. This makes the appearance of the foldable electronic device 100 more beautiful.

[0246] In order to achieve a fixed connection between the second connecting member 33 and the second housing 21, see Figure 28 The second connecting member 33 is provided with a second fixing plate 335, and the inner wall surface of the second assembly cavity 213 is provided with a support plate 2133. The second fixing plate 335 supports and is fixedly connected to the support plate 2133. For example, the second fixing plate 335 and the support plate 2133 can be fixedly connected by screws, bonding, clamping, etc.

[0247] In some embodiments, see Figure 28 The second housing 21 is provided with a third avoidance groove 214 and a fourth avoidance groove 215. The third avoidance groove 214 is used to accommodate the third damping assembly 383, and the fourth avoidance groove 215 is used to accommodate the fourth damping assembly 384. The third avoidance groove 214 and the fourth avoidance groove 215 are both connected to the second assembly cavity 213. For details, please refer to Figure 28 The third avoidance groove 214 includes a fourth notch 2141 that extends through the second side surface 212 and communicates with the fourth opening 2132. The fourth avoidance groove 215 includes a fifth notch 2151 that extends through the second side surface 212 and communicates with the fourth opening 2132. Thus, when the rotating shaft mechanism 3 is assembled to the second housing 21, the third damping assembly 383 can be avoided by the third avoidance groove 214, and the fourth damping assembly 384 can be avoided by the fourth avoidance groove 215, thereby reducing the difficulty of assembling the rotating shaft mechanism 3.

[0248] For further information, see Figure 28 The foldable electronic device 100 further includes a first baffle 23 and a second baffle 24. The first baffle 23 is used to block the third notch 2141. The second baffle 22 is used to block the fourth notch 2151. This improves the waterproof and dustproof properties of the second housing 21. Furthermore, the first baffle 23 can shield the third damping assembly 383, and the second baffle 24 can shield the fourth damping assembly 384, thereby enhancing the aesthetic appearance of the foldable electronic device 100.

[0249] The first baffle 23 and the second housing 21 are independently molded parts, and the second baffle 24 and the second housing 21 are independently molded parts. In this way, after the second connecting member 33 is assembled to the second housing 21, the first baffle 23 and the second baffle 24 can be respectively sealed in the third notch 2141 and the fourth notch 2151, which can reduce the difficulty of assembling the hinge mechanism 3 and the second housing 21.

[0250] In this embodiment, the first baffle 23 and the second baffle 24 are both fixedly connected to the second housing 21. The connection between the first baffle 23 and the second housing 21 includes, but is not limited to, snap-fitting, screwing, and bonding. The connection between the second baffle 24 and the second housing 21 includes, but is not limited to, snap-fitting, screwing, and bonding.

[0251] In other embodiments, see Figure 30 , Figure 30Schematic diagrams of the hinge mechanism 3 provided in other embodiments of the present application. The hinge mechanism 3 in this embodiment differs from the hinge mechanism 3 in any of the aforementioned embodiments in that the first baffle 23 and the second baffle 24 are both fixedly connected to the second connecting member 33. This allows the first baffle 23 and the second connecting member 33 to be assembled to the second housing 21, further simplifying assembly of the hinge mechanism 3.

[0252] In some embodiments, the first baffle 23 and the second sub-plate 3313 a of the third side plate 3313 are integrally formed, and the second baffle 24 and the sixth sub-plate 3313 b of the third side plate 3313 are integrally formed.

[0253] It is understandable that in other embodiments, one of the first baffle 23 and the second baffle 24 may be fixedly connected to the second shell 21 , and the other of the first baffle 23 and the second baffle 24 may be fixedly connected to the second connecting member 33 .

[0254] Under the design constraints that the thickness of the second part 112 of the first shell 11 is 7.5 mm, the thickness of the first part 111 is 4 mm, and the maximum opening and closing angle is 150 degrees, the foldable electronic device 100 in the embodiment of the present application adopts a design scheme of a hinge mechanism 3 that combines virtual and real axis rotation. When the display 2 rotates by 110 degrees relative to the keyboard host 1 in the virtual axis rotation range and by 40 degrees in the real axis rotation range, the rotation radius of the swing arm 32 is 7.5 mm. When the foldable electronic device 100 is in a fully open state, the exposed arc length of the swing arm 32 is 14.4 mm.

[0255] Under the same design constraints, Figure 4 In the embodiment shown, a single real axis rotation shaft design is adopted, the rotation radius of the swing arm 32 is 13.1 mm, and when the foldable electronic device 100 is in the fully opened state, the exposed arc length of the swing arm 32 is 34.30 mm. Figure 5 In the embodiment shown, a single virtual axis rotation shaft design is adopted, the rotation radius of the swing arm 32 is 9.1 mm, and when the foldable electronic device 100 is in the fully opened state, the exposed arc length of the swing arm 32 is 23.82 mm.

[0256] Figure 4 The rotation radius of the swing arm 32 in the embodiment shown is about 1.75 times the rotation radius of the swing arm 32 in the embodiment of the present application. Figure 5 The rotation radius of the swing arm 32 in the embodiment shown is approximately 1.2 times the rotation radius of the swing arm 32 in the embodiment of the present application. Figure 4 In the foldable electronic device 100 of the embodiment shown, when it is in the fully opened state, the exposed volume of the swing arm 32 is V1. Figure 5 When the foldable electronic device 100 in the illustrated embodiment is in the fully opened state, the exposed volume of the swing arm 32 is V2. When the foldable electronic device 100 in the embodiment of the present application is in the fully opened state, the exposed volume of the swing arm 32 is V3, and V1:V2:V3=4.16:2:1.

[0257] In the foldable electronic device 100 of the embodiment of the present application, the rotation radius of the swing arm 32 and the exposed volume of the swing arm 32 when the foldable electronic device 100 is fully opened are significantly reduced. Therefore, the foldable electronic device 100 of the embodiment of the present application can achieve a lightweight and thin design of the foldable electronic device 100 while ensuring the maximum opening and closing angle of the foldable electronic device 100, and can improve the appearance of the foldable electronic device 100 in the fully opened state.

[0258] In the description of this specification, specific features, structures, materials or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

[0259] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A foldable electronic device, characterized in that: include: The first housing includes a first portion and a second portion, the first portion including a first surface, the second portion being fixedly connected to a circumferential side of the first portion and protruding from the first surface; the second portion including a first end surface, the first end surface oriented in the same direction as the first surface; the first housing is provided with a first assembly cavity, at least a portion of the first assembly cavity is located in the second portion, the first assembly cavity including a first opening, the first opening extending through the first end surface; a second housing, wherein the foldable electronic device includes a folded state and a fully opened state. In the folded state, the second housing is stacked with the first portion, and the second housing is located on the side facing the first surface, and a portion of the second portion is located on one circumferential side of the second housing. In the fully opened state, the second housing is located on the side facing the first end surface of the second portion. In addition, along the thickness direction of the first housing, a projection of the second housing on the first housing does not overlap with the first portion. A rotating shaft mechanism, comprising: a first connecting member, the first connecting member being disposed in the first assembly cavity and fixedly connected to the first housing; The first connecting member includes a first top plate, the first top plate is arranged at the first opening, and a first avoidance hole is opened on the first top plate; a swing arm in the shape of an arc plate, wherein one of the swing arm and the first connecting member comprises a first arc-shaped guide rail, and the other comprises a first arc-shaped matching portion, the first matching portion is slidably connected to the first arc-shaped guide rail, and the swing arm is slidably matched with the first avoidance hole; A second connecting member is fixedly connected to the second shell, one of the second connecting member and the swing arm is provided with a first rotating shaft, and the other is provided with a first shaft hole, and the first rotating shaft is rotatably connected to the first shaft hole.

2. The foldable electronic device according to claim 1, wherein: The first connecting member includes the first circular arc guide rail, and the first circular arc guide rail includes a first circular arc groove; At least a portion of the swing arm is formed as the first matching portion, and the first matching portion is slidably matched with the first arc-shaped groove.

3. The foldable electronic device according to claim 1, wherein: The first connecting member includes a first wall plate, the first wall plate includes a first inner wall surface and a first outer wall surface that are opposite to each other in a first direction, the swing arm is located on the side facing the first inner wall surface, and the first direction is parallel to the axis of rotation of the swing arm relative to the first connecting member; The first arc-shaped guide rail includes a first arc-shaped convex rib and a second arc-shaped convex rib arranged opposite to each other, the first arc-shaped convex rib and the second arc-shaped convex rib are both fixedly connected to the first inner wall surface, a first arc-shaped groove is defined between the first arc-shaped convex rib and the second arc-shaped convex rib, and the first mating portion is mated with the first arc-shaped groove.

4. The foldable electronic device according to any one of claims 1 to 3, characterized in that: A first limiting hole is provided on one of the first connecting member and the swing arm, and a first limiting protrusion is provided on the other one. The first limiting protrusion is slidably engaged with the first limiting hole. The first limiting hole is an arc-shaped hole, and the center line of the first limiting hole is collinear with the axis of rotation of the swing arm relative to the first connecting member. The first limiting hole includes a first hole wall and a second hole wall relative to each other on its extension path, and the swing arm can rotate between a first position and a second position relative to the first connecting member, wherein in the first position, the first limiting protrusion abuts against the first hole wall, and in the second position, the first limiting protrusion abuts against the second hole wall.

5. The foldable electronic device according to claim 4, wherein: The central angle corresponding to the first limiting hole is greater than or equal to 80 degrees and less than or equal to 130 degrees.

6. The foldable electronic device according to claim 4, wherein: The foldable electronic device further includes a first damping component, which is disposed on the first limiting protrusion and is used to provide a damping force for the swing arm when the swing arm rotates relative to the first connecting member.

7. The foldable electronic device according to claim 6, wherein: The first connecting member includes a first wall plate, the first limiting hole is provided on the first wall plate, and the first limiting protrusion is passed through the first limiting hole; The first damping component comprises: a first friction pad, the first friction pad being fixedly connected to the first limiting protrusion and abutting against the first wall plate; a first elastic member, the first elastic member being disposed on a side of the first friction pad facing away from the first wall plate and being used to apply a force to the first friction pad toward the first wall plate; A first limiting member is provided on a side of the first elastic member facing away from the first wall plate, the first limiting member is relatively fixed to the swing arm, and the first limiting member abuts against an end of the first elastic member facing away from the first friction pad.

8. The foldable electronic device according to claim 4, wherein: The first connecting member includes: a first split portion, the first split portion comprising a first wall plate, the first limiting hole or the first limiting protrusion being provided on the first wall plate; The second split part includes a second wall panel, the second wall panel is opposite to the first wall panel in a first direction, the swing arm is located between the first wall panel and the second wall panel, the second split part is fixedly connected to the first split part, and the second split part and the first split part are split parts, and the first direction is parallel to the axis of rotation of the swing arm relative to the first connecting part.

9. The foldable electronic device according to any one of claims 1-3 and 5-8, characterized in that: The swing arm can rotate between a first position and a second position relative to the first connecting member, and when the rotating shaft mechanism is in a folded state, the swing arm is located at the first position relative to the first connecting member; The rotating shaft mechanism also includes a magnetic attraction component, which includes a first magnetic attraction component and a second magnetic attraction component. The first magnetic attraction component is arranged on the first connecting component, and the second magnetic attraction component is arranged on the swing arm and can rotate synchronously with the swing arm. When the swing arm is in the second position relative to the first connecting component, the first magnetic attraction component and the second magnetic attraction component are magnetically engaged.

10. The foldable electronic device according to any one of claims 1-3 and 5-8, characterized in that: The first connecting member includes: a first wall plate, wherein the first arc-shaped guide rail or the first matching portion is provided on the first wall plate; a second wall plate, the second wall plate being spaced apart from and opposite to the first wall plate in a first direction, the first direction being parallel to the axis of rotation of the swing arm relative to the first connecting member, the swing arm being located between the first wall plate and the second wall plate; A first top plate is connected between the first wall plate and the second wall plate.

11. The foldable electronic device according to any one of claims 1-3 and 5-8, characterized in that: A third limiting hole is provided on one of the second connecting member and the swing arm, and a third limiting protrusion is provided on the other one, wherein the third limiting protrusion is slidably engaged with the third limiting hole, and the third limiting hole is an arc-shaped hole, and the center line of the third limiting hole is collinear with the axis of the first rotating shaft; The second connecting member is capable of rotating relative to the swing arm between a third position and a fourth position, and when the foldable electronic device is in a folded state, the second connecting member is in the third position relative to the swing arm; The third limiting hole includes a third hole wall surface and a fourth hole wall surface relative to each other on its extension path, wherein in the third position, the third limiting protrusion abuts against the third hole wall surface, and in the fourth position, the third limiting protrusion abuts against the fourth hole wall surface.

12. The foldable electronic device according to claim 11, wherein: The central angle corresponding to the third limiting hole is greater than or equal to 20 degrees and less than or equal to 70 degrees.

13. The foldable electronic device according to claim 11, wherein: The foldable electronic device further includes a third damping component, which is disposed on the third limiting protrusion and is used to provide a damping force for the second connecting member when the second connecting member rotates relative to the swing arm.

14. The foldable electronic device according to claim 13, wherein: The second connecting member includes a first side plate, and the first side plate includes: a side plate body, the third limiting hole being formed in the side plate body, the third limiting protrusion being passed through the third limiting hole, the swing arm and the side plate body being arranged in a first direction, and the third damping assembly being located on a side of the side plate body facing away from the swing arm, and the first direction being parallel to an axis of rotation of the swing arm relative to the first connecting member; The abutment boss is arranged on a side surface of the side plate body facing away from the swing arm, and the abutment boss is located on the outer periphery of the third limiting hole. The surface of the abutment boss facing away from the side plate body is used to abut with the third damping assembly; when the second connecting member is in the third position relative to the swing arm, the abutment boss is located on the side of the third damping assembly facing away from the wall surface of the third hole.

15. The foldable electronic device according to claim 14, wherein: The abutting boss comprises: a first abutting section; A first guide section, the first guide section is fixedly connected to one end of the first abutting section close to the third hole wall surface, and in the direction from the third hole wall surface to the fourth hole wall surface, the first guide section extends away from the surface of the side plate body toward the direction away from the side plate body.

16. The foldable electronic device according to any one of claims 1-3, 5-8, and 12-15, characterized in that: The swing arm can rotate between a first position and a second position relative to the first connecting member, and the second connecting member can rotate between a third position and a fourth position relative to the swing arm; In the folded state, the swing arm is located at the first position relative to the first connecting member, and the second connecting member is located at the third position relative to the swing arm; in the fully opened state, the swing arm is located at the second position relative to the first connecting member, and the second connecting member is located at the fourth position relative to the swing arm; During the process of switching the foldable electronic device from the folded state to the fully opened state, after the swing arm rotates from the first position to the second position relative to the first connecting member, the second connecting member rotates from the third position to the fourth position relative to the swing arm; and / or, during the process of switching the foldable electronic device from the fully opened state to the folded state, after the second connecting member rotates from the fourth position to the third position relative to the swing arm, the swing arm rotates from the second position to the first position relative to the first connecting member.

17. The foldable electronic device according to any one of claims 1-3, 5-8, and 12-15, characterized in that: The second portion includes a second end surface, the direction of the second end surface is opposite to the direction of the first surface, the first assembly cavity includes a second open opening, and the second open opening passes through the second end surface.

18. The foldable electronic device according to any one of claims 1-3, 5-8, and 12-15, characterized in that: A second assembly cavity is provided on the second shell, and the second connecting member is arranged in the second assembly cavity.

19. The foldable electronic device according to claim 18, wherein: The second portion includes a first end surface and a first side surface, the first end surface is oriented in the same direction as the first surface, and the first side surface is connected between the first end surface and the first surface; The second housing includes a third surface and a second side surface. When the foldable electronic device is in the folded state, the third surface is opposite to the first surface, and the second side surface is opposite to the first side surface. The second assembly cavity includes a third opening and / or a fourth opening. The third opening passes through the third surface, and the fourth opening passes through the second side surface.

20. The foldable electronic device according to any one of claims 1-3, 5-8, and 12-15, characterized in that: The foldable electronic device is a notebook computer, and the foldable electronic device includes: A keyboard host, the keyboard host comprising the first shell; A display including the second housing.

Images