Folding assembly, folding device and terminal equipment

Abstract

A folding assembly (10), a folding device (100), and a terminal device (1000), relating to the technical field of foldable electronic devices, the folding assembly (10) comprising a base (11), a support member (12), and at least two swing arms (13), the at least two swing arms (13) being respectively arranged on both sides of the support member (12), the swing arms (13) being rotatably connected to the base (11) so as to be capable of rotating between an unfolded position and a folded position; the swing arm (13) is provided with a first pushing part (14) and a second pushing part (15), and the first pushing part (14) and the second pushing part (15) are sequentially arranged in the direction of the rotating axis e of the swing arm (13). When the swing arm (13) rotates from the unfolding position to the folding position, the swing arm (13) drives the first pushing part (14) to rotate so as to push the supporting piece (12) to move towards the base (11). When the swing arm (13) rotates from the folding position to the unfolding position, the swing arm (13) drives the second pushing part (15) to rotate so as to push the supporting piece (12) to move back to the base (11). The folding assembly (10) has a simple structure and a small thickness dimension, and can further reduce the occupation of the thickness space of the folding device (100).

Description

Folding assembly, folding device and terminal equipment

[0001] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office on September 2, 2022, with application number 202211072274.2 and application name “Folding component, folding device and terminal equipment”, the entire contents of which are incorporated by reference into this application. Technical Field

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

[0003] Foldable electronic devices refer to electronic devices that can be folded and unfolded, such as foldable screen mobile phones, foldable screen tablets, foldable screen laptops, etc. Foldable electronic devices generally include a folding device and a folding screen arranged on the folding device. The folding device can be folded or unfolded through its folding mechanism, and the folding screen can be folded or unfolded together with the folding device. Taking the folding screen as an inward-folding folding screen as an example, when the folding screen is in the folded state, its bending part will protrude outward and move down a certain distance relative to the two side panels of the folding device used to support the folding screen, which is easy to interfere with other components. For this reason, there is a solution in the related art that the folding mechanism includes a lift plate that can be raised and lowered. When the folding screen is in the folded state, the lift plate descends to avoid the bending part of the folding screen. When the folding screen is in the unfolded state, the lift plate rises to support the folding screen.

[0004] However, in order to achieve the lifting and lowering of the lifting plate, the folding mechanism in the related technology needs to be provided with springs that provide elastic force for the lifting and lowering of the lifting plate, sliding columns for placing the springs, fixed seats and other components, resulting in the folding mechanism occupying a large thickness space of the folding device, hindering the lightweight design of the foldable device.

[0005] Summary of the Invention

[0006] The embodiments of the present application provide a folding assembly, a folding device, and a terminal device, which can improve the technical problem in the related art that the folding mechanism occupies a large thickness space of the folding device.

[0007] To achieve the above objectives, the embodiments of the present application adopt the following technical solutions:

[0008] In a first aspect, an embodiment of the present application provides a folding assembly, the folding assembly comprising:

[0009] base;

[0010] supports; and

[0011] at least two swing arms, disposed on either side of the support member, the swing arms being rotatably connected to the base so as to be able to rotate between an unfolded position and a folded position;

[0012] The swing arm is provided with a first pushing portion and a second pushing portion, and the first pushing portion and the second pushing portion are sequentially arranged along the direction of the rotation axis of the swing arm; the support member includes a first surface and a second surface, the first surface is arranged opposite to the first pushing portion, and the second surface is arranged opposite to the second pushing portion;

[0013] When the swing arm rotates from the deployed position toward the folded position, the first pushing portion abuts the first surface to push the support member toward the base; when the swing arm rotates from the folded position toward the deployed position, the second pushing portion abuts the second surface to push the support member away from the base.

[0014] The above technical solutions in the embodiments of the present application have at least the following technical effects or advantages:

[0015] The folding assembly provided in the embodiment of the present application has a first pushing part and a second pushing part on the swing arm. When the swing arm rotates from the expanded position to the folded position, the swing arm drives the first pushing part to rotate at the same time, and the first pushing part can abut the first surface to push the support member to move toward the base. When the swing arm rotates from the folded position to the expanded position, the swing arm drives the second pushing part to rotate at the same time, and the second pushing part can abut the second surface to push the support member to move back to the base, thereby realizing the control of the movement of the support member toward and back to the base by rotating the swing arm, the first pushing part and the second pushing part, that is, realizing the control of the descent and ascent of the support member, and in this process, the first pushing part and the second pushing part can limit the support member, and there is no need to set up a spring or other components to provide force for the lifting and lowering of the support member, thereby simplifying the structure and reducing the thickness space occupied by the folding device using the folding assembly. At the same time, since the first pushing part and the second pushing part are arranged in sequence along the direction of the rotation axis of the swing arm, the first pushing part and the second pushing part can be relatively staggered along the direction of the rotation axis of the swing arm. Compared with the situation where they are at the same position along the direction of the rotation axis of the swing arm, resulting in the overlapping thickness dimensions of the first pushing part, the second pushing part, and the space or entity between the first pushing part and the second pushing part, the upward thrust and the downward thrust can be provided to the support member at different positions along the direction of the rotation axis of the swing arm, that is, at the same position along the direction of the rotation axis of the swing arm, it can only be responsible for cooperating with one surface of the support member, which is beneficial to distribute the thickness along the direction of the rotation axis of the swing arm, reducing the overall overlapping thickness dimension of the first pushing part, the second pushing part, and the space or entity between the first pushing part and the second pushing part, which can further reduce the thickness dimension of the folding component, and further reduce the thickness space occupied by the folding device.

[0016] In an embodiment of the first aspect, each of the two sides of the support member includes the first surface and the second surface, the first surface is used for contacting and cooperating with the first pushing portion on the same side, and the second surface is used for contacting and cooperating with the second pushing portion on the same side;

[0017] When the swing arm is at a position between the unfolded position and the folded position, the first pushing portion is located on a side of the first surface away from the base, and the second pushing portion is located on a side of the second surface close to the base.

[0018] In an embodiment of the first aspect, along the thickness direction of the support member, the height of the first surface is less than or equal to the height of the second surface; the thickness direction of the support member is parallel to the direction in which the support member moves toward or away from the base.

[0019] In an embodiment of the first aspect, the support member comprises:

[0020] Main body;

[0021] a first protrusion, the first protrusion being provided on each of both sides of the main body; and

[0022] a second convex portion, wherein each of the two sides of the main body is provided with the second convex portion;

[0023] The side of the first protrusion away from the base includes the first surface, and the side of the second protrusion close to the base includes the second surface.

[0024] In an embodiment of the first aspect, a first groove and a second groove are formed on the swing arm; when the swing arm is in the unfolded position, the first protrusion at least partially extends into the first groove; when the swing arm is in the folded position, the second protrusion at least partially extends into the second groove;

[0025] The first pushing portion is provided on the inner wall and / or outer edge of the first groove, and the second pushing portion is provided on the inner wall and / or outer edge of the second groove.

[0026] In an embodiment of the first aspect, a avoidance space is provided on the base, and the position of the avoidance space corresponds to the position of the first protrusion; when the swing arm is in the folded position, the first protrusion is at least partially located in the avoidance space.

[0027] In an embodiment of the first aspect, the avoidance space is provided on each of the two sides of the base, and the base forms a connecting portion between the two avoidance spaces; a avoidance groove is provided on the side of the main body close to the base, and when the swing arm is in the folded position, the connecting portion is at least partially located in the avoidance groove.

[0028] In an embodiment of the first aspect, the first pushing portion has a first cam surface; when the swing arm rotates from the unfolded position toward the folded position, the first cam surface forms a cam fit with the first surface.

[0029] In an embodiment of the first aspect, the second pushing portion has a second cam surface; when the swing arm rotates between the unfolded position and the folded position, the second cam surface forms a cam fit with the second surface.

[0030] In an embodiment of the first aspect, when the swing arm is in the folded position, the first pushing portion is in contact with the first surface, and a gap is provided between the second pushing portion and the second surface.

[0031] In an embodiment of the first aspect, the first pushing portion has a first contact surface; when the swing arm is in the folded position, the first contact surface is in surface contact with the first surface.

[0032] In an embodiment of the first aspect, when the swing arm is in the folded position, the support member is supported on the base.

[0033] In an embodiment of the first aspect, when the swing arm is in the expanded position, the second pushing portion is in contact with the second surface, and a gap is provided between the first pushing portion and the first surface.

[0034] In an embodiment of the first aspect, the second pushing portion has a second contact surface; when the swing arm is in the expanded position, the second contact surface is in surface contact with the second surface.

[0035] In an embodiment of the first aspect, the swing arm is provided with a first supporting portion, and the first supporting portion, the first pushing portion, and the second pushing portion are sequentially arranged along the direction of the rotation axis of the swing arm;

[0036] When the swing arm is in the expanded position, the first supporting portion is located on a side of the support member close to the base, and is used to support the support member.

[0037] In an embodiment of the first aspect, the first supporting portion has a third contact surface; when the swing arm is in the expanded position, the third contact surface is in surface contact with the support member.

[0038] In an embodiment of the first aspect, when the swing arm is in a position between the unfolded position and the folded position, the first support portion is not in contact with the support member.

[0039] In an embodiment of the first aspect, the first supporting portion has an inclined surface, which is located on one side of the portion of the first supporting portion used to support the supporting member; when the swing arm is in the expanded position, the inclined surface does not contact the supporting member and is tilted by the supporting member toward the base.

[0040] In an embodiment of the first aspect, each of the two sides of the support member includes a third surface, and the third surface is configured to contact and cooperate with the first supporting portion;

[0041] When the swing arm is in a position between the unfolded position and the folded position, the first supporting portion is located on a side of the third surface close to the base;

[0042] Among them, along the thickness direction of the support member, the height of the first surface is less than or equal to the height of the second surface, and the height of the first surface is less than or equal to the height of the third surface; the thickness direction of the support member is parallel to the direction in which the support member moves toward or away from the base.

[0043] In an embodiment of the first aspect, along the thickness direction of the support member, the height at which the third surface is located is less than or equal to the height at which the second surface is located.

[0044] In an embodiment of the first aspect, the support member comprises:

[0045] the main body; and

[0046] a third convex portion, wherein each of the two sides of the main body is provided with the third convex portion;

[0047] Wherein, the side of the third protrusion close to the base includes the third surface.

[0048] In an embodiment of the first aspect, a third groove is provided on the swing arm, and when the swing arm is in the folded position, the third protrusion at least partially extends into the third groove; the first supporting portion is provided on the inner wall and / or outer edge of the third groove.

[0049] In an embodiment of the first aspect, the swing arm is provided with a second supporting portion, and the first pushing portion, the second pushing portion, and the second supporting portion are sequentially arranged along the direction of the rotation axis of the swing arm;

[0050] When the swing arm is in the expanded position, the second supporting portion is located on a side of the support member away from the base.

[0051] In an embodiment of the first aspect, when the swing arm is in a position between the unfolded position and the folded position, the second support portion is not in contact with the support member.

[0052] In an embodiment of the first aspect, the swing arm is provided with a first limiting portion, and the base is provided with a first limiting matching portion, the first limiting portion being configured to abut against the first limiting matching portion when the swing arm rotates to the deployed position, so as to limit further rotation of the swing arm; and / or

[0053] A second limiting portion is provided on the swing arm, and a second limiting matching portion is provided on the base. The second limiting portion is used to abut against the second limiting matching portion when the swing arm rotates to the folded position to limit the swing arm from continuing to rotate.

[0054] In an embodiment of the first aspect, the folding assembly further comprises a door panel, which is arranged on the support member and located on a side of the support member away from the base, and the relative positions of the door panel and the support member are fixed; wherein, the door panel and the support member are formed separately.

[0055] In one embodiment of the first aspect, the folding assembly further comprises a shaft cover, and the base is disposed on the shaft cover and located between the support member and the shaft cover;

[0056] An avoidance groove is provided on the swing arm; when the swing arm is in the expanded position, the avoidance groove is located on a side of the swing arm close to the shaft cover, and a side edge of the shaft cover extends into the avoidance groove.

[0057] In a second aspect, an embodiment of the present application provides a folding device, the folding device comprising:

[0058] a first shell;

[0059] a second housing; and

[0060] The folding assembly of any embodiment of the first aspect above;

[0061] Wherein, the first shell is connected to the swing arm on one side of the support member, and the second shell is connected to the swing arm on the other side of the support member.

[0062] In a third aspect, an embodiment of the present application provides a terminal device, the terminal device comprising:

[0063] The folding device of the second aspect above; and

[0064] A folding screen is arranged on the first shell and the second shell; the position of the foldable part of the folding screen corresponds to the position of the support member of the folding assembly.

[0065] It can be understood that the beneficial effects of the second and third aspects mentioned above can be found in the relevant description of the first aspect mentioned above, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0066] FIG1 is a schematic structural diagram of an electronic device in an unfolded state provided by the related art;

[0067] FIG2 is a schematic structural diagram of an electronic device in a folded state provided by the related art;

[0068] FIG3 is a schematic structural diagram of a folding mechanism in an unfolded state provided by the related art;

[0069] FIG4 is a schematic structural diagram of a folding mechanism in a folded state provided by the related art;

[0070] FIG5 is a schematic diagram of the structure of a terminal device provided in an embodiment of the present application;

[0071] FIG6 is a schematic structural diagram of a folding device provided in an embodiment of the present application;

[0072] FIG7 a is a schematic structural diagram of a folding assembly in an unfolded state provided by an embodiment of the present application;

[0073] FIG7 b is a schematic structural diagram of the folding assembly provided in an embodiment of the present application in a folded state;

[0074] FIG8 is an exploded view of the folding assembly shown in FIG7a;

[0075] FIG9 a is a cross-sectional schematic diagram of the first pushing portion cooperating with the support member when the swing arm is in the expanded position according to an embodiment of the present application;

[0076] FIG9 b is a cross-sectional schematic diagram of the first pushing portion cooperating with the support member when the swing arm provided by an embodiment of the present application is in a position between the unfolded position and the folded position;

[0077] FIG9 c is a cross-sectional schematic diagram of the first pushing portion cooperating with the support member when the swing arm is in the folded position according to an embodiment of the present application;

[0078] FIG10 a is a cross-sectional schematic diagram of the second pushing portion cooperating with the support member when the swing arm is in the expanded position according to an embodiment of the present application;

[0079] FIG10 b is a cross-sectional schematic diagram of the second pushing portion cooperating with the support member when the swing arm is in a position between the unfolded position and the folded position according to an embodiment of the present application;

[0080] FIG10c is a cross-sectional schematic diagram of the second pushing portion cooperating with the support member when the swing arm is in the folded position according to an embodiment of the present application;

[0081] FIG11 is a schematic structural diagram of a support member provided in an embodiment of the present application;

[0082] FIG12 is a schematic structural diagram of the support member shown in FIG11 from another perspective;

[0083] FIG13 is a right side view of the support member shown in FIG11;

[0084] FIG14 is a schematic structural diagram of a swing arm provided in an embodiment of the present application;

[0085] FIG15 is a schematic structural diagram of the swing arm shown in FIG14 from another perspective;

[0086] FIG16 is a schematic structural diagram of a support member provided in another embodiment of the present application;

[0087] FIG17 is a cross-sectional schematic diagram of the support member shown in FIG16 when cooperating with the first pushing portion, the second pushing portion and the first supporting portion;

[0088] FIG18 is a schematic structural diagram of a support member provided in another embodiment of the present application;

[0089] FIG19 is a schematic structural diagram of a support member provided in yet another embodiment of the present application;

[0090] FIG20 is a schematic structural diagram of a support member provided in another embodiment of the present application;

[0091] FIG21 a is a cross-sectional schematic diagram of the first supporting portion and the supporting member when the swing arm provided by an embodiment of the present application is in the unfolded position;

[0092] FIG21 b is a cross-sectional schematic diagram of the first supporting portion and the supporting member when the swing arm provided by an embodiment of the present application is in a position between the unfolded position and the folded position;

[0093] FIG21c is a cross-sectional schematic diagram of the first supporting portion and the supporting member when the swing arm is in the folded position according to an embodiment of the present application;

[0094] FIG22 is a schematic diagram of the relationship between two points rotated by the same angle along the same axis according to an embodiment of the present application;

[0095] FIG23 is a schematic structural diagram of a swing arm provided in another embodiment of the present application;

[0096] FIG24 is a schematic structural diagram of a support member provided in another embodiment of the present application;

[0097] FIG25 is a right side view of the support member shown in FIG24;

[0098] FIG26 is a schematic structural diagram of a support member provided in yet another embodiment of the present application;

[0099] FIG27 is a schematic structural diagram of a folding assembly provided in another embodiment of the present application;

[0100] FIG. 28 is an exploded view of the folding assembly shown in FIG. 27 .

[0101] In the figures, the following reference numerals are used: 1. electronic device; 01. body; 02. flexible display screen; 021. flexibly deformable portion; 011. folding mechanism; 012. first side panel; 013. second side panel; 0111. fixing seat; 0112. sliding column; 0113. limiting plate; 0114. spring; 0115. lifting plate; 0116. rotating member; 10. Folding assembly; 11. Base; 12. Support member; 13. Swing arm; 14. First pusher; 15. Second pusher; 193. Rotating shaft; 1305. Shaft through hole; 1102. Rotating shaft hole; 111. Shaft seat; 112. Connecting portion; 1201. First surface; 1202. Second surface; 121. Main body; 122. First protrusion; 123. Second protrusion; 1301. First groove; 1302. Second groove; 1101. Avoidance space; 14a. First portion; 14b. Second portion; 15a. Third portion; 15b. Fourth portion; 125. First recessed portion; 126. Second recessed portion; 141. First cam surface; 151. Second cam surface; 142. First contact surface; 152, second contact surface; 16, first supporting portion; 161, third contact surface; 162, inclined surface; 1203, third surface; 124, third protrusion; 1303, third groove; 16a, fifth portion; 16b, sixth portion; 127, third recess; 16', second supporting portion; 128, fourth protrusion; 1204, fourth surface; 1304, fourth groove; 129, fourth recess; 171, first position-limiting portion; 181, first position-limiting mating portion; 172, second position-limiting portion; 182, second position-limiting mating portion; 191, door panel; 192, shaft cover; 1306, avoidance groove; 120, avoidance groove; 1205, position-limiting groove; 1921, side edge; 100, folding device; 20, first shell; 30, second shell; 1000, terminal device; 200, folding screen; 210, foldable part. DETAILED DESCRIPTION

[0102] The following describes in detail embodiments of the present application, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0103] In the description of this application, it should be understood that the terms "length", "width", "thickness", "top", "bottom", "inside", "outside", "up", "down", "left", "right", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on this application.

[0104] The terms "first," "second," "third," and "fourth," etc., are used solely for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features being referred to. For example, the terms "first pushing portion" and "second pushing portion" are used solely to distinguish between the different pushing portions and do not define their order. The first pushing portion could also be named the second pushing portion, and the second pushing portion could also be named the first pushing portion without departing from the scope of the various described embodiments. Furthermore, the terms "first," "second," "third," and "fourth," etc., do not necessarily define the features being referred to as different.

[0105] In this application, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium, internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0106] In this application, "and / or" is simply a way to describe the relationship between related objects, indicating that three possible relationships exist. For example, "A and / or B" can mean: A exists alone, A and B exist simultaneously, or B exists alone. Additionally, the character " / " in this document generally indicates that the related objects are in an "or" relationship.

[0107] It should be noted that, in this application, words such as "in one embodiment," "exemplarily," and "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described in this application as "in one embodiment," "exemplarily," or "for example" should not be construed as being preferred or advantageous over other embodiments or designs. Rather, the use of words such as "in one embodiment," "exemplarily," and "for example" is intended to present the relevant concepts in a concrete manner.

[0108] In order to make the purpose, technical solutions and advantages of this application more clear, this application is further described in detail below with reference to the accompanying drawings and embodiments.

[0109] Please refer to Figures 1 and 2. Figure 1 shows a front view of a foldable electronic device 1 in the related art in an unfolded state, and Figure 2 shows a front view of the electronic device 1 shown in Figure 1 in a folded state. The electronic device 1 includes a body 01 and a flexible display 02 disposed on the body 01. The body 01 includes a folding mechanism 011, a first side panel 012, and a second side panel 013. The first side panel 012 and the second side panel 013 are respectively connected to either side of the folding mechanism 011 and can rotate between a folded state and an unfolded state based on the folding mechanism 011. The flexible display 02 is disposed on the first side panel 012 and the second side panel 013 so as to be foldable or unfoldable as the first side panel 012 and the second side panel 013 rotate.

[0110] Comparing Figures 1 and 2 , it can be seen that when the flexible display screen 02 is in the folded state, the flexible deformable portion 021 of the flexible display screen 02 bends and bulges toward the side where the folding mechanism 011 is located, resulting in a certain amount of downward movement. Therefore, a certain amount of space is required to avoid and accommodate the bent flexible deformable portion 021. Otherwise, the flexible deformable portion 021 is likely to interfere with other components of the electronic device 1. When the flexible display screen 02 is in the unfolded state, the flexible deformable portion 021 returns to a roughly flat state, and thus the flexible deformable portion 021 needs to be supported. Otherwise, when the flexible deformable portion 021 is subjected to force, it is likely to sag toward the side where the folding mechanism 011 is located, affecting the user experience.

[0111] To solve the above problem, please refer to Figures 3 and 4. Figure 3 shows a schematic diagram of a folding mechanism 011 in the related art supporting a flat, flexibly deformable portion 021, and Figure 4 shows a schematic diagram of a folding mechanism 011 in the related art accommodating a bent, flexibly deformable portion 021. The folding mechanism 011 includes a fixed seat 0111, a sliding post 0112 extending through the fixed seat 0111 and capable of moving up and down, a limiting plate 0113 disposed at the bottom end of the sliding post 0112, a spring 0114 sleeved on the sliding post 0112 and limited between the fixed seat 0111 and the limiting plate 0113, a lifting plate 0115 disposed at the top end of the sliding post 0112, and two rotating members 0116 located on opposite sides of the lifting plate 0115. The two rotating parts 0116 can rotate around the rotating axis based on the fixed base 0111. The two rotating parts 0116 are respectively connected to the first side panel 012 and the second side panel 013 so as to be able to rotate to the folded state and the unfolded state together with the first side panel 012 and the second side panel 013.

[0112] When the first and second side panels 012 and 013 are in the unfolded state, the two rotating members 0116 are also in the unfolded state and support the two sides of the lifting plate 0115, respectively. The lifting plate 0115 rises to its highest position, and the spring 0114 is compressed. At this point, the lifting plate 0115 supports the flexibly deformable portion 021, reducing the possibility of the flexibly deformable portion 021 sinking. When the first and second side panels 012 and 013 rotate from the unfolded state to the folded state, the two rotating members 0116 rotate accordingly and gradually separate from the lifting plate 0115. The lifting plate 0115 then gradually descends under the elastic restoring force of the spring 0114, gradually clearing space above the lifting plate 0115 to accommodate the flexibly deformable portion 021. When the first and second side panels 012 and 013 are in the folded state, the lifting plate 0115 descends to its lowest position, and the bent flexibly deformable portion 021 is accommodated above the lifting plate 0115.

[0113] From the above, it can be seen that in order to realize the lifting and lowering of the lifting plate 0115, the folding mechanism 011 in the related technology needs to be equipped with many components such as a fixed seat 0111, a sliding column 0112, a limit plate 0113, a spring 0114, etc., which results in the overall thickness of the folding mechanism 011 being large, occupying a large thickness space of the fuselage 01, and hindering the lightweight design of the electronic device 1.

[0114] In view of this, an embodiment of the present application provides a folding component, a folding device including the folding component, and a terminal device including the folding device, which can improve the technical problem in the related technology that the folding mechanism occupies a large thickness space of the fuselage, reduce the thickness size of the folding mechanism, and thereby reduce the thickness space occupied by the fuselage.

[0115] The terminal device provided in the embodiments of the present application is a foldable electronic device, that is, an electronic device that can be folded and unfolded. The terminal device can be a mobile phone, a tablet computer, a laptop computer (Laptop), a notebook computer (Notebook PC), a personal digital assistant (PDA), a wearable device (such as a watch), an in-vehicle device, an augmented reality (AR) / virtual reality (VR) device, etc., but is not limited thereto. In the embodiments of the present application, a mobile phone is used as an example for description.

[0116] Please refer to Figure 5, which shows a schematic diagram of the structure of a terminal device 1000 provided in an embodiment of the present application in an unfolded state. The terminal device 1000 includes a folding device 100 and a folding screen 200, with the folding screen 200 being disposed on the folding device 100. The folding device 100 provides support and protection for the folding screen 200 and is capable of folding and unfolding. The folding screen 200 is a flexible screen that can fold and unfold along with the folding device 100.

[0117] Please refer to Figure 6, which shows a schematic structural diagram of a folding device 100 provided in one embodiment of the present application. The folding device 100 includes a folding assembly 10, a first shell 20, and a second shell 30. The folding assembly 10 is located between the first shell 20 and the second shell 30, and is connected to the first shell 20 and the second shell 30, respectively. The first shell 20 and the second shell 30 can rotate relative to each other based on the folding assembly 10, so that they can be relatively close to each other and rotate to a folded position (Figure 6 illustrates the situation where the first shell 20 and the second shell 30 are in the unfolded position), and can be relatively separated and rotated to the unfolded position.

[0118] It can be understood that the number of the folding components 10 can be one or more; when the number of the folding components 10 is multiple, the folding components 10 can be arranged in sequence and spaced apart, and all are located between the first shell 20 and the second shell 30.

[0119] Please continue to refer to Figures 5 and 6. The folding screen 200 is arranged on the first shell 20 and the second shell 30, and can be folded and unfolded as the first shell 20 and the second shell 30 rotate. The folding screen 200 has a foldable portion 210, which is roughly located between the first shell 20 and the second shell 30 to correspond to the folding component 10. The foldable portion 210 is flexible so that when the first shell 20 and the second shell 30 rotate relative to each other, the folding screen 200 can be folded by bending the foldable portion 210. It can be understood that the portion of the folding screen 200 corresponding to the first shell 20 can be flexible or rigid; the portion of the folding screen 200 corresponding to the second shell 30 can be flexible or rigid.

[0120] For example, the foldable screen 200 is an inward-folding foldable screen (when the foldable screen is folded, the display surface of the foldable screen is located on the inner side). The back of the foldable screen 200 is disposed on the first housing 20 and the second housing 30, and the display surface of the foldable screen 200 is exposed. The display surface of the foldable screen 200 is the side used to display images, and the back of the foldable screen 200 is the other side opposite the display surface.

[0121] When the first housing 20 and the second housing 30 are in the unfolded position (i.e., the terminal device 1000 is in the unfolded state), the first housing 20 and the second housing 30 are approximately in the same plane, i.e., the angle between the first housing 20 and the second housing 30 is approximately 180°. At this time, the foldable screen 200 is approximately flat, so that the terminal device 1000 has a larger display area. It should be understood that when the first housing 20 and the second housing 30 are in the unfolded position, the angle between the first housing 20 and the second housing 30 is not limited to an absolute 180°. The angle between the first housing 20 and the second housing 30 can also be greater than or less than 180°, but close to 180°. For example, the angle can range from 165 to 190° (e.g., 170°, 173°, 175°, 182°, 185°, etc., but not limited thereto), and the foldable screen 200 can also be unfolded.

[0122] When the first housing 20 and the second housing 30 are in the folded position (i.e., the terminal device 1000 is in the folded state), the first housing 20 and the second housing 30 are substantially parallel, i.e., the angle between the first housing 20 and the second housing 30 is substantially 0°. At this time, the foldable screen 200 is folded relative to the foldable portion 210 and is located between the first housing 20 and the second housing 30, thereby facilitating storage of the terminal device 1000 and reducing the possibility of damage to the foldable screen 200. It should be understood that when the first housing 20 and the second housing 30 are in the folded position, the first housing 20 and the second housing 30 are not necessarily absolutely parallel. The angle between the first housing 20 and the second housing 30 can also be greater than 0°, but close to 0°. For example, the angle can range from 0° to 15° (e.g., 1°, 2°, 3°, 5°, 10°, etc., but not limited thereto), and the foldable screen 200 can still be folded.

[0123] Next, the folding assembly 10 provided in the embodiment of the present application will be introduced and described.

[0124] To facilitate the description of the various embodiments below, an XYZ coordinate system is established, defining the width direction of the folding assembly 10 as the X-axis direction, which can also be considered as the direction from the first housing 20 to the second housing 30 when the terminal device 1000 is in the unfolded state; defining the length direction of the folding assembly 10 as the Y-axis direction, which can also be considered as the direction from the lower edge of the first housing 20 to the upper edge when the terminal device 1000 is in the unfolded state; and defining the thickness direction of the folding assembly 10 as the Z-axis direction, which can also be considered as the direction from the back of the first housing 20 to the folding screen 200 when the terminal device 1000 is in the unfolded state, that is, the thickness direction of the terminal device 1000. It should be understood that the coordinate system of the folding assembly 10 can be flexibly set according to actual needs. This application only provides an example and should not be considered as a special limitation of this application.

[0125] Please refer to Figures 7a to 8. Figure 7a shows a schematic diagram of the three-dimensional structure of a folding assembly 10 provided in an embodiment of the present application in an unfolded state. Figure 7b shows a schematic diagram of the three-dimensional structure of the folding assembly 10 shown in Figure 7a when folded into a folded state. Figure 8 shows an exploded view of the folding assembly 10 shown in Figure 7a. The folding assembly 10 includes a base 11, a support member 12, and at least two swing arms 13, wherein:

[0126] Base 11 is used to mount and support swing arm 13. Base 11 is also called a base or shaft cover base. It is understood that base 11 can be of various shapes, such as a plate structure, a frame structure, or a block structure, but is not limited to these. It can also be other regular or irregular shapes, as long as it can accommodate swing arm 13. This is not a limitation here.

[0127] The support member 12 is located on one side of the base 11 and can move toward or away from the base 11; Figure 7a exemplarily shows the situation where the support member 12 is located above the base 11. The position of the support member 12 corresponds to the position of the foldable portion 210 of the folding screen 200. When the support member 12 moves toward the base 11, that is, the support member 12 descends, the side of the support member 12 away from the base leaves space for accommodating the foldable portion 210 after bending. When the support member 12 moves away from the base 11, that is, the support member 12 rises, the side of the support member 12 away from the base can be used to support the foldable portion 210 after flattening.

[0128] It can be understood that the support member 12 can be a structure of various shapes, such as a frame structure, a plate structure, a block structure, a sheet structure, etc., but is not limited thereto. It can also be a structure of other regular or irregular shapes, as long as it can support the object and can cooperate with the first pushing part 14 and the second pushing part 15 described below. No sole limitation is made here.

[0129] At least two swing arms 13 are provided on either side of the support member 12; that is, there are swing arms 13 on both sides of the support member 12, but the number of swing arms 13 on each side can be one or more. The swing arms 13 are rotatably connected to the base 11, allowing them to rotate relative to the base 11 between an extended position and a folded position. The swing arms 13 on either side of the support member 12 are respectively connected to the first shell 20 and the second shell 30, allowing them to rotate together with the first shell 20 and the second shell 30 to the extended position or the folded position; that is, the first shell 20 is connected to the swing arm 13 on one side of the support member 12, and the second shell 30 is connected to the swing arm 13 on the other side of the support member 12. The rotation axes e of the swing arms 13 on either side of the support member 12 can be arranged to be approximately parallel, although some deviation is possible, but close to parallel, to allow for manufacturing and assembly errors. The rotation axis e can be approximately parallel to the Y-axis.

[0130] It should be noted that the two sides of the support member 12 refer to the two sides with the longitudinal section m of the support member 12 as the dividing line. The two sides can be oppositely arranged sides (i.e., oppositely arranged sides) or non-oppositely arranged sides (i.e., the two sides have a certain offset along the thickness direction h of the support member 12, and are not oppositely arranged). Among them, the longitudinal section m is a plane parallel to the thickness direction h of the support member 12 and bisects the support member 12 along the width direction g of the support member 12, as shown in Figure 9a. The thickness direction h of the support member 12 is parallel to the direction f of movement of the support member 12 toward or away from the base 11, and is also parallel to the Z-axis direction; the thickness direction h of the support member 12 can also be regarded as the height direction of the support member 12. The width direction g of the support member 12 is perpendicular to the thickness direction h of the support member 12 and the direction of the rotation axis e of the swing arm 13, and the width direction g of the support member 12 is also parallel to the X-axis direction. By analogy, the two sides of a component appearing in the following text refer to the two sides with the longitudinal section of the component as the dividing line.

[0131] It is understood that when the swing arms 13 on both sides of the support member 12 are in the deployed position (e.g., as shown in FIG7 a ), the first shell 20 and the second shell 30 are also in the deployed position, and the angle between the swing arms 13 on both sides of the support member 12 is also approximately 180°. Of course, there may be a certain deviation from 180°, for example, the angle range may be 165 to 190° (e.g., 170°, 173°, 175°, 182°, 185°, etc., but not limited thereto). Similarly, when the swing arms 13 on both sides of the support member 12 are in the folded position (e.g., as shown in FIG7 b ), the first shell 20 and the second shell 30 are also in the folded position, and the swing arms 13 on both sides of the support member 12 may be approximately parallel, that is, the angle between the swing arms 13 on both sides of the support member 12 is approximately 0°. Of course, there may also be a smaller angle between the swing arms 13 on both sides of the support member 12, for example, the angle range may be 0 to 15° (e.g., 1°, 2°, 3°, 5°, 10°, etc., but not limited thereto).

[0132] It should be understood that the swing arms 13 can have various shapes. The main function of the swing arms 13 on both sides of the support member 12 is to rotate relative to the base 11. For ease of description, both are referred to as swing arms. However, the shapes and structures of the swing arms 13 on both sides of the support member 12 can be the same or different, and this is not a sole limitation in the embodiments of the present application.

[0133] Referring to FIG8 , the swing arms 13 on both sides of the support member 12 are each provided with a first pushing portion 14 and a second pushing portion 15 . The first pushing portion 14 and the second pushing portion 15 on the same swing arm 13 are sequentially arranged along the direction of the rotation axis e of the swing arm 13 . That is, along the direction of the rotation axis e of the swing arm 13 , the first pushing portion 14 and the second pushing portion 15 are relatively staggered rather than being in the same position. It is understood that along the direction of the rotation axis e of the swing arm 13 , the first pushing portion 14 and the second pushing portion 15 can be completely staggered, that is, along a projection perpendicular to the rotation axis e, the first pushing portion 14 and the second pushing portion 15 do not overlap. Of course, in other embodiments, the first pushing portion 14 and the second pushing portion 15 can also be partially staggered, that is, along a projection perpendicular to the rotation axis e, the first pushing portion 14 and the second pushing portion 15 partially overlap and partially do not overlap.

[0134] Please refer to Figures 9a to 10c. Figure 9a shows a cross-sectional schematic diagram of the first pushing portion 14 cooperating with the support member 12 when the swing arm 13 is in the expanded position, Figure 9b shows a cross-sectional schematic diagram of the first pushing portion 14 cooperating with the support member 12 when the swing arm 13 is between the expanded position and the folded position, and Figure 9c shows a cross-sectional schematic diagram of the first pushing portion 14 cooperating with the support member 12 when the swing arm 13 is in the folded position; Figure 10a shows a cross-sectional schematic diagram of the second pushing portion 15 cooperating with the support member 12 when the swing arm 13 is in the expanded position, Figure 10b shows a cross-sectional schematic diagram of the second pushing portion 15 cooperating with the support member 12 when the swing arm 13 is between the expanded position and the folded position, and Figure 10c shows a cross-sectional schematic diagram of the second pushing portion 15 cooperating with the support member 12 when the swing arm 13 is in the folded position.

[0135] Please refer to Figures 11 and 12. Figure 11 shows a schematic perspective view of the support member 12 according to one embodiment of the present application, and Figure 12 shows a schematic perspective view of the support member 12 shown in Figure 11 from another perspective. Please also refer to Figures 7a and 8. The support member 12 includes a first surface 1201 and a second surface 1202. The first surface 1201 is disposed opposite to the first pusher 14, i.e., the position of the first surface 1201 corresponds to the position of the first pusher 14. Therefore, during the rotation of the swing arm 13, the first pusher 14 and the first surface 1201 can contact each other. The position of each first pusher 14 can correspond to the position of a first surface 1201. The second surface 1202 is disposed opposite to the second pusher 15, i.e., the position of the second surface 1202 corresponds to the position of the second pusher 15. Therefore, during the rotation of the swing arm 13, the second pusher 15 and the second surface 1202 can contact each other. The position of each second pusher 15 can correspond to the position of a second surface 1202. It can be understood that the first surface 1201 and the second surface 1202 can be flat surfaces, curved surfaces or folded surfaces (a folded surface is a surface with a fold line or a curved surface).

[0136] Referring to Figures 9a, 9b, and 9c, as the swing arm 13 rotates from the deployed position to the folded position, the swing arm 13 drives the first pusher 14 to rotate therewith. The first pusher 14 rotates toward the base 11, causing the first pusher 14 to abut against the first surface 1201, thereby pushing the support member 12 toward the base 11, thereby lowering the support member 12. Referring to Figures 10c, 10b, and 10a, as the swing arm 13 rotates from the folded position to the deployed position, the swing arm 13 drives the second pusher 15 to rotate therewith. The second pusher 15 rotates away from the base 11, causing the second pusher 15 to abut against the second surface 1202, thereby pushing the support member 12 away from the base 11, thereby raising the support member 12.

[0137] It is understood that the first pushing portion 14 can be a structure of various shapes capable of pushing an object to move, such as a protruding structure or surface structure on the swing arm 13, or a rod-shaped structure, a block-shaped structure, a columnar structure, a hook-shaped structure, etc., but not limited thereto. In addition, the first pushing portion 14 can be a rigid structure or an elastic structure capable of elastic deformation. Similarly, the second pushing portion 15 can be a structure of various shapes capable of pushing an object to move, such as a protruding structure or surface structure on the swing arm 13, or a rod-shaped structure, a block-shaped structure, a columnar structure, a hook-shaped structure, etc., but not limited thereto. In addition, the second pushing portion 15 can be a rigid structure or an elastic structure capable of elastic deformation.

[0138] As can be seen from the above, the folding assembly 10 provided in the embodiment of the present application has a first pushing portion 14 and a second pushing portion 15 on the swing arm 13. When the swing arm 13 rotates from the unfolded position to the folded position, the swing arm 13 can simultaneously drive the first pushing portion 14 and the second pushing portion 15 to rotate toward the base 11. The first pushing portion 14 can push the support member 12 toward the base 11 by abutting against the first surface 1201, which is conducive to making room on the side of the support member 12 away from the base 11 for accommodating the foldable portion 210 after bending, and the second pushing portion 15 is not likely to hinder the descent of the support member 12; when the swing arm 13 rotates from the folded position to the unfolded position, the swing arm 13 can simultaneously drive the first pushing portion 14 and the second pushing portion 15 to rotate back to the base 11, and the second pushing portion 15 can push the support member 12 by abutting against the second surface 1202. Movement back to the base 11 is beneficial for the support member 12 to support the foldable portion 210 in a flat state, effectively reducing the possibility of the foldable portion 210 being concave when the folding screen 200 is in a flat state, and the first pushing portion 14 is not likely to hinder the rise of the support member 12; therefore, it is possible to control the movement of the support member 12 toward and away from the base 11 by rotating the swing arm 13, the first pushing portion 14 and the second pushing portion 15, that is, it is possible to control the descent and rise of the support member 12, and there is no need to set up a spring to provide force for the lifting and lowering of the support member 12; and in the process of the support member 12 descending and rising, the first pushing portion 14 and the second pushing portion 15 can limit the support member 12 from the top and bottom of the support member 12 respectively, and there is no need to set up additional components such as a fixed seat, a sliding column, and a limit plate for limiting, so that the control of the movement of the support member 12 is simpler; thereby simplifying the structure, reducing the thickness of the folding component 10, and thereby reducing the thickness space occupied by the folding device 100.

[0139] At the same time, since the first pushing part 14 and the second pushing part 15 are arranged in sequence along the direction of the rotation axis e of the swing arm 13, the first pushing part 14 and the second pushing part 15 can be relatively staggered along the direction of the rotation axis e of the swing arm 13. Compared with the situation where they are at the same position along the direction of the rotation axis e of the swing arm 13, resulting in the superposition of the thickness dimensions of the first pushing part 14, the second pushing part 15, and the space or entity between the first pushing part 14 and the second pushing part 15, they can provide an upward thrust and a downward thrust to the support member 12 at different positions along the direction of the rotation axis e of the swing arm 13, that is, at the same position along the direction of the rotation axis e of the swing arm 13, they can only be responsible for cooperating with one surface of the support member 12, which is beneficial to distributing the thickness along the direction of the rotation axis e of the swing arm 13, and reducing the overall superposition of the thickness dimensions of the first pushing part 14, the second pushing part 15, and the space or entity between the first pushing part 14 and the second pushing part 15. Moreover, it is also possible to change the shape of the portion of the support member 12 that is used to contact and cooperate with the first pushing portion 14 and the second pushing portion 15 (if the first pushing portion 14 and the second pushing portion 15 are in the same position along the direction of the rotation axis e of the swing arm 13, then the portion of the support member 12 that is used to contact and cooperate with the first pushing portion 14 and the second pushing portion 15 is the same portion of the support member 12, except that the thickness has little space for shape change), so as to facilitate changing the relative height or shape of the two different portions of the support member 12 that are respectively used to contact and cooperate with the first pushing portion 14 and the second pushing portion 15, and adapt to the position setting of the first pushing portion 14 and the second pushing portion 15, thereby facilitating reducing the overall thickness dimension formed by the support member 12 and the first pushing portion 14 and the second pushing portion 15; thereby further reducing the thickness dimension of the folding assembly 10, and further reducing the thickness space occupied by the folding device 100, which is conducive to the lightweight design of the terminal device 1000.

[0140] It should be understood that the aforementioned thickness is the thickness along the direction f in which the support member 12 moves toward or away from the base 11 , that is, the thickness along the Z-axis direction.

[0141] The rotational connection between the swing arm 13 and the base 11 can have various implementations, which will be described below as examples.

[0142] In one embodiment, referring to Figures 7a and 8 , the folding assembly 10 includes at least two rotational shafts 193. The swing arm 13 has a shaft through-hole 1305, and the base 11 has at least two rotational shaft holes 1102. The rotational shaft holes 1102 can be through holes or blind holes. Each rotational shaft 193 extends through one shaft through-hole 1305 and at least one rotational shaft hole 1102, allowing each swing arm 13 to be rotatably connected to the base 11 via a single rotational shaft 193. In this case, the rotational axis e of the swing arm 13 is also the axis of the rotational shaft 193.

[0143] It can be understood that the rotating shaft 193 can be relatively fixed with the rotating shaft hole 1102, and rotatably cooperate with the shaft through hole 1305; the rotating shaft 193 can also be rotatably cooperated with the rotating shaft hole 1102, and relatively fixed with the shaft through hole 1305; the rotating shaft 193 can also be rotatably cooperated with both the rotating shaft hole 1102 and the shaft through hole 1305.

[0144] For example, referring to Figures 7a and 8 , the base 11 may include an axle seat 111 with a rotational axis hole 1102 defined therein. Multiple axle seats 111 may be provided for the same rotational axis 193, and these axle seats 111 may be arranged sequentially along the rotational axis e. The swing arm 13 may be positioned between two adjacent axle seats 111. This not only improves the stability of the rotational connection between the swing arm 13 and the base 11, but also limits the swing arm 13 along the rotational axis e. Of course, in other embodiments, the number of axle seats 111 provided for the same rotational axis 193 may be one.

[0145] Optionally, in another embodiment, a first rotating shaft portion (not shown in the drawings) is protruded from the end of the swing arm 13. The first rotating shaft portion is generally rod-shaped or columnar and is integrally formed with the swing arm 13. A first shaft hole is defined in the base 11, and the first rotating shaft portion is inserted into and rotatably engages with the first shaft hole, thereby achieving a rotational connection between the swing arm 13 and the base 11. In this case, the rotation axis e of the swing arm 13 is also the axis of the first rotating shaft portion.

[0146] Alternatively, in another embodiment, a second rotating shaft portion (not shown in the drawings) is protruded from the base 11. The second rotating shaft portion is generally rod-shaped or columnar and is integrally formed with the base 11. A second shaft hole is formed in the swing arm 13, and the second rotating shaft portion is inserted into and rotatably engages with the second shaft hole, thereby achieving a rotational connection between the swing arm 13 and the base 11. In this case, the rotation axis e of the swing arm 13 is also the axis of the second rotating shaft portion.

[0147] Alternatively, in another embodiment, the folding assembly 10 includes a bearing (not shown in the drawings), and the swing arm 13 is connected to the base 11 via the bearing, thereby achieving a rotational connection between the swing arm 13 and the base 11. In this case, the rotation axis e of the swing arm 13 is also the axis of the bearing. The bearing can be of various types, for example, having a first component and a second component that are rotationally coupled, with the swing arm 13 connected to the first component and the base 11 connected to the second component.

[0148] Next, the cooperation between the support member 12 and the first pushing portion 14 and the second pushing portion 15 will be described.

[0149] In one embodiment, referring to Figures 11 and 12 , and also referring to Figures 7a and 8 , each of the opposing sides of the support member 12 includes a first surface 1201 and a second surface 1202 . The first surface 1201 and the second surface 1202 on the same side of the support member 12 are respectively configured to contact and cooperate with the first pushing portion 14 and the second pushing portion 15 on the same side. The position of the first surface 1201 corresponds to the position of the first pushing portion 14 on the same side, and the position of the second surface 1202 corresponds to the position of the second pushing portion 15 on the same side. Specifically, the first surface 1201 and the second surface 1202 on the left side of the support member 12 are respectively configured to contact and cooperate with the first pushing portion 14 and the second pushing portion 15 on the swing arm 13 on the left side of the support member 12; the first surface 1201 and the second surface 1202 on the right side of the support member 12 are respectively configured to contact and cooperate with the first pushing portion 14 and the second pushing portion 15 on the swing arm 13 on the right side of the support member 12.

[0150] When the swing arm 13 is in a position between the unfolded position and the folded position, as shown in FIG9b , the first pushing portion 14 is located on the side of the first surface 1201 away from the base 11 (it can also be understood that the first pushing portion 14 is located above the first surface 1201. The above here should be understood in a broad sense, rather than specifically referring to directly above. It can be above any position of the first surface 1201, such as directly above, above the side, or diagonally above). This arrangement is intended to enable the first pushing portion 14 to abut against the first surface 1201 and press down the support member 12, so that the support member 12 can descend or move downward. At the same time, for example, as shown in FIG10b , the second pushing portion 15 is located on a side of the second surface 1202 close to the base 11 (it can also be understood that the second pushing portion 15 is located below the second surface 1202. The term "below" here should be understood in a broad sense, not specifically referring to directly below. It can be below any position of the second surface 1202, such as directly below, below the side, or diagonally below). This arrangement is intended to enable the second pushing portion 15 to abut the second surface 1202 to lift the support member 12, allowing the support member 12 to rise or move upward. In other words, the first pushing portion 14 is used to contact and cooperate with the first surface 1201 of the support member 12 to push the support member 12 downward, and the second pushing portion 15 is used to contact and cooperate with the second surface 1202 of the support member 12 to push the support member 12 upward.

[0151] Therefore, referring to Figures 9a, 9b, and 9c, when the swing arms 13 on either side of the support member 12 rotate from the deployed position to the folded position, the first pusher 14 is driven to rotate toward the base 11. The first pusher 14 can rotate to contact the first surface 1201 and apply a downward thrust to the first surface 1201, thereby causing the support member 12 to move toward the base 11, that is, to descend. Referring to Figures 10c, 10b, and 10a, when the swing arms 13 on either side of the support member 12 rotate from the folded position to the deployed position, the second pusher 15 is driven to move away from the base 11. The second pusher 15 can rotate to contact the second surface 1202 and apply an upward thrust to the second surface 1202, thereby causing the support member 12 to move away from the base 11, that is, to ascend.

[0152] Further, please refer to FIG. 13 , which shows a right side view of the support member 12 shown in FIG. 11 . Along the thickness direction h of the support member 12 , the height H1 of the first surface 1201 is less than or equal to the height H2 of the second surface 1202 .

[0153] It should be understood that the height H1 at which the first surface 1201 is located and the height H2 at which the second surface 1202 is located are based on the same reference plane s, which is the horizontal plane at which the lowest surface of the support member 12 along its thickness direction h is located (the thickness direction h is perpendicular to this horizontal plane). The lowest surface of the support member 12 along its thickness direction h can be a flat surface or a curved surface. When the lowest surface of the support member 12 along its thickness direction h is a flat surface, the horizontal plane at which the flat surface is located is used as the reference plane s. FIG13 exemplifies this situation. When the lowest surface of the support member 12 along its thickness direction h is a curved surface, the horizontal plane at which the lowest point of the curved surface is located is used as the reference plane s.

[0154] It is understood that the first surface 1201 can be a plane or a curved surface; when the first surface 1201 is a plane, the height H1 of the first surface 1201 is the vertical distance between the first surface 1201 and the reference plane s, as shown in Figure 13. When the first surface 1201 is a curved surface, the height H1 of the first surface 1201 is the height of the lowest point of the first surface 1201, that is, the vertical distance between the lowest point of the first surface 1201 and the reference plane s. Similarly, the second surface 1202 can be a plane or a curved surface; when the second surface 1202 is a plane, the height H2 of the second surface 1202 is the vertical distance between the second surface 1202 and the reference plane s, as shown in Figure 13. When the second surface 1202 is a curved surface, the height H2 of the second surface 1202 is the height of the lowest point of the second surface 1202, that is, the vertical distance between the lowest point of the second surface 1202 and the reference plane s.

[0155] With such a configuration, since the height H1 of the first surface 1201 along the thickness direction h of the support member 12 is less than or equal to the height H2 of the second surface 1202, compared with the case where the height of the first surface 1201 is greater than the height of the second surface 1202, it is more conducive to the first surface 1201 to leave more space on the side away from the base 11 to accommodate the first pushing part 14, and it is more conducive to the second surface 1202 to leave more space on the side close to the base 11 to accommodate the second pushing part 15, thereby being more conducive to reducing the overall thickness dimension formed by the first pushing part 14, the second pushing part 15 and the part of the support member 12 used to cooperate with the first pushing part 14 and the second pushing part 15, thereby further reducing the thickness dimension of the folding component 10, thereby further reducing the thickness space occupied by the folding device 100.

[0156] Optionally, referring to FIG. 11 and FIG. 13 , along the thickness direction h of the support member 12 , the height H1 of the first surface 1201 is smaller than the height H2 of the second surface 1202 , which is more conducive to reducing the thickness of the folding assembly 10 .

[0157] There are various implementations for arranging the first surface 1201 and the second surface 1202 at different heights on the support member 12 , which will be described below as examples.

[0158] Alternatively, in one embodiment, referring to Figures 11 to 13 , the support member 12 includes a main body 121, a first protrusion 122, and a second protrusion 123. The main body 121 may have various shapes, such as, but not limited to, a frame structure, a plate structure, or a block structure. A first protrusion 122 is provided on each of two opposing sides of the main body 121. The first protrusion 122 extends generally from the main body 121 toward the swing arm 13, and the direction of the protrusion may be generally parallel to the X-axis, or may be at a certain angle to the X-axis. A second protrusion 123 is provided on each of two opposing sides of the main body 121. The second protrusion 123 extends generally from the main body 121 toward the swing arm 13, and the direction of the protrusion may be generally parallel to the X-axis, or may be at a certain angle to the X-axis. The first protrusion 122 and the second protrusion 123 may have various shapes, such as, but not limited to, a block structure, a columnar structure, or a hook-shaped structure. The side of the first protrusion 122 facing away from the base 11 includes a first surface 1201, which can also be understood as the upper surface of the first protrusion 122 being provided with or forming the first surface 1201. The side of the second protrusion 123 facing the base 11 includes a second surface 1202, which can also be understood as the lower surface of the second protrusion 123 being provided with or forming the second surface 1202. Therefore, along the thickness direction h of the support member 12, the first protrusion 122 is lower than the second protrusion 123. In other words, when the swing arm 13 is in the deployed state, along the direction f in which the support member 12 moves toward or away from the base 11, the first protrusion 122 is closer to the base 11 than the second protrusion 123.

[0159] With this arrangement, since both the first and second protrusions 122 and 123 protrude from the main body 121, a space extending from the upper exterior is formed above the first protrusion 122, which accommodates the first pusher 14 and does not interfere with the rotation of the first pusher 14. A space extending from the lower exterior is formed below the second protrusion 123, which accommodates the second pusher 15 and does not interfere with the rotation of the second pusher 15. Furthermore, by providing the first and second protrusions 122 and 123 at different heights, the first and second surfaces 1201 and 1202 can be formed at different heights.

[0160] Optionally, please refer to Figure 13. Along the projection of the thickness direction h of the support member 12, the first protrusion 122 and the second protrusion 123 do not overlap, which is conducive to the first protrusion 122 and the second protrusion 123 to independently cooperate with the first pushing portion 14 and the second pushing portion 15 respectively, thereby reducing the possibility of interference between the first protrusion 122 and the second pushing portion 15, and between the second protrusion 123 and the first pushing portion 14.

[0161] Furthermore, along the projection of the thickness direction h of the support member 12, a gap exists between the first protrusion 122 and the second protrusion 123; that is, along the direction of the rotation axis e, the first protrusion 122 and the second protrusion 123 are spaced apart. This further facilitates the first protrusion 122 and the second protrusion 123 to independently cooperate with the first pushing portion 14 and the second pushing portion 15, respectively.

[0162] Alternatively, referring to FIG8 and FIG9a to FIG9c, base 11 is provided with a clearance space 1101. The clearance space 1101 may be a space formed by a slot, a hole, or other vacant portion. The position of the clearance space 1101 corresponds to the position of the first protrusion 122, and the number of the clearance spaces 1101 may correspond to the number of the first protrusions 122. The avoidance space 1101 is used to avoid the first protrusion 122 when the support member 12 moves toward the base 11. Therefore, when the swing arm 13 is in the folded position, the first protrusion 122 is at least partially located in the avoidance space 1101 (that is, the first protrusion 122 can be partially located in the avoidance space 1101, or can be completely located in the avoidance space 1101), which is beneficial for the first protrusion 122 to not interfere with other components when it drops a certain distance, and is beneficial for increasing the stroke of the first protrusion 122. It can also improve the structural compactness of the base 11 and the support member 12 in the direction f of the support member 12 moving toward or away from the base 11, and reduce the thickness of the folding component 10.

[0163] Optionally, please refer to Figure 8 and compare with Figures 9a to 9c. A avoidance space 1101 is provided on each side of the base 11. The avoidance space 1101 and the first protrusion 122 can be set in a one-to-one correspondence. The base 11 has a connecting portion 112 formed between the two avoidance spaces 1101. The connecting portion 112 can be in various shapes, such as strips, blocks, rods, etc., but is not limited thereto. A avoidance groove 120 is provided on one side of the main body 121 close to the base 11. The avoidance groove 120 is used to avoid the connecting portion 112 when the support member 12 moves toward the base 11. Therefore, when the swing arm 13 is in the folded position, the connecting portion 112 is at least partially located in the avoidance groove 120 (that is, the connecting portion 112 can be partially located in the avoidance groove 120, or can be completely located in the avoidance groove 120), which is beneficial to further increase the descending stroke of the support member 12, and can further improve the structural compactness of the base 11 and the support member 12 in the direction f of the support member 12 moving toward or away from the base 11, thereby reducing the thickness of the folding component 10.

[0164] Alternatively, please refer to Figures 14 and 15. Figure 14 shows a schematic structural diagram of a swing arm 13 according to one embodiment of the present application, while Figure 15 shows a schematic structural diagram of the swing arm 13 shown in Figure 14 from another perspective. A first groove 1301 and a second groove 1302 are defined on each side of the swing arm 13, respectively, on the support member 12. The first groove 1301 is configured to receive the first protrusion 122 on the same side, and thus the position of the first groove 1301 corresponds to the position of the first protrusion 122. The second groove 1302 is configured to receive the second protrusion 123 on the same side, and thus the position of the second groove 1302 corresponds to the position of the second protrusion 123. It is understood that the first groove 1301 and the second groove 1302 can be staggered relative to each other along the rotation axis e of the swing arm 13. Alternatively, the first groove 1301 can extend toward the side of the second groove 1302 along the rotation axis e, such that the projections of the first groove 1301 and the second groove 1302 overlap along the direction f in which the support member 12 moves toward or away from the base 11.

[0165] With such arrangement, when the swing arm 13 rotates between the unfolded position and the folded position, the first groove 1301 allows the first protrusion 122 to extend into and avoid and accommodate the first protrusion 122, and the second groove 1302 allows the second protrusion 123 to extend into and avoid and accommodate the second protrusion 123, which can shorten the distance between the support member 12 and the swing arm 13, and is beneficial to reducing the relative height difference between the support member 12 and the swing arm 13, and further helps to further reduce the thickness of the folding component 10. Moreover, when the first protrusion 122 extends into the first groove 1301, the inner wall of the first groove 1301 can limit the first protrusion 122, or when the second protrusion 123 extends into the second groove 1302, the inner wall of the second groove 1302 can limit the second protrusion 123, so as to limit the movement of the first protrusion 122 and the second protrusion 123 along the direction of the rotation axis e of the swing arm 13, that is, to limit the movement of the support member 12 along the direction of the rotation axis e, which can improve the stability of the support member 12 when it moves toward or away from the base 11.

[0166] For example, referring to FIG9a , when the swing arm 13 is in the deployed position, the first protrusion 122 at least partially extends into the first groove 1301 (i.e., the first protrusion 122 may partially or fully extend into the first groove 1301). When the swing arm 13 rotates from the deployed position to the folded position, referring to FIG9a , FIG9b , and FIG9c , the portion of the first protrusion 122 that extends into the first groove 1301 may gradually move outward, referring to FIG10a , FIG10b , and FIG10c , and the second protrusion 123 may gradually extend into the second groove 1302. Referring to FIG10c , when the swing arm 13 is in the folded position, the second protrusion 123 at least partially extends into the second groove 1302 (i.e., the second protrusion 123 may partially or fully extend into the second groove 1302). When the swing arm 13 rotates from the folded position to the unfolded position, please refer to Figures 10c, 10b and 10a in sequence, the portion of the second protrusion 123 extending into the second groove 1302 gradually moves outward, please refer to Figures 9c, 9b and 9a in sequence, the first protrusion 122 can gradually extend into the first groove 1301.

[0167] Optionally, referring to Figures 14 and 15 , a first pushing portion 14 is provided on the inner wall and / or outer edge of the first groove 1301; that is, the first pushing portion 14 may be provided only on the inner wall of the first groove 1301, the first pushing portion 14 may be provided only on the outer edge of the first groove 1301, or both the inner wall and the outer edge of the first groove 1301. A second pushing portion 15 is provided on the inner wall and / or the outer edge of the second groove 1302; that is, the second pushing portion 15 may be provided only on the inner wall of the second groove 1302, the second pushing portion 15 may be provided only on the outer edge of the second groove 1302, or both the inner wall and the outer edge of the second groove 1302.

[0168] It is understood that the inner wall of the first groove 1301 refers to the inner surface surrounding and forming the first groove 1301, including the inner sidewalls and inner bottom wall of the first groove 1301. When the bottom of the first groove 1301 intersects the shaft through-hole 1305, the surface of the rotating shaft 193 located at the bottom of the first groove 1301 serves as the inner bottom wall of the first groove 1301. Similarly, the inner wall of the second groove 1302 refers to the inner surface surrounding and forming the second groove 1302, including the inner sidewalls and inner bottom wall of the second groove 1302. When the bottom of the second groove 1302 intersects the shaft through-hole 1305, the surface of the rotating shaft 193 located at the bottom of the second groove 1302 serves as the inner bottom wall of the second groove 1302. It is also understood that the outer edge of the first groove 1301 refers to the outer edge of the groove opening of the first groove 1301, and the outer edge of the second groove 1302 refers to the outer edge of the groove opening of the second groove 1302.

[0169] In this arrangement, since the first pushing portion 14 is arranged on the inner wall and / or outer edge of the first groove 1301, and the second pushing portion 15 is arranged on the inner wall and / or outer edge of the second groove 1302, compared with the case where the first pushing portion 14 and the second pushing portion 15 extend outward away from the swing arm 13 for a longer time, the length of the first pushing portion 14 and the second pushing portion 15 protruding outward away from the swing arm 13 can be greatly reduced, and there is even no need to protrude outward (for example, the inner wall and / or outer edge of the first groove 1301 directly forms the first pushing portion 14, and the inner wall and / or outer edge of the second groove 1302 directly forms the second pushing portion 15), which can further reduce the distance between the support member 12 and the swing arm 13, and further reduce the relative height difference between the support member 12 and the swing arm 13, which is not only conducive to further reducing the thickness of the folding component 10, but also the stability of the support member 12 when moving can be improved due to the reduction in height difference.

[0170] For example, referring to Figures 14 and 15 , a first pusher 14 is provided on the inner sidewall and outer edge of the first groove 1301. Specifically, the first pusher 14 comprises a first portion 14a and a second portion 14b connected to each other. The first portion 14a is provided on the inner sidewall of the first groove 1301, and the second portion 14b extends to the outer edge of the first groove 1301. When the swing arm 13 rotates from the deployed position to the folded position, the first portion 14a first contacts the first surface 1201, and then gradually transitions to the second portion 14b contacting the first surface 1201. This facilitates segmented control of the descent of the support member 12 and improves the stability of the support member 12 during descent.

[0171] Among them, the first part 14a is an arc surface structure, and the second part 14b is a raised structure, so that when the swing arm 13 rotates from the unfolded position to the folded position, the first pushing part 14 transitions from the arc surface structure abutting the first surface 1201 to the raised structure abutting the first surface 1201, which is more conducive to pushing the support member 12 to descend steadily.

[0172] Of course, in other embodiments, the first portion 14a may also be a planar structure, a raised structure, a bulged structure, a protruding structure, a rod-shaped structure, a columnar structure, etc., but is not limited thereto; the second portion 14b may also be a planar structure, a curved structure, a bulged structure, a protruding structure, a rod-shaped structure, a columnar structure, etc., but is not limited thereto. The specific structure of the first pushing portion 14 can be set according to the actual descending stroke and trajectory requirements of the support member 12, and is not limited to a single one in the embodiments of the present application.

[0173] For example, referring to Figures 14 and 15 , a second pusher 15 is provided on the inner sidewall and outer edge of the second groove 1302. Specifically, the second pusher 15 comprises a connected third portion 15a and a fourth portion 15b. The third portion 15a is provided on the inner sidewall of the second groove 1302, while the fourth portion 15b extends to the outer edge of the second groove 1302. When the swing arm 13 rotates from the folded position to the unfolded position, the third portion 15a first contacts the second surface 1202, and then gradually transitions to the fourth portion 15b contacting the second surface 1202. This facilitates segmented control of the raising and lowering of the support member 12 and improves the stability of the support member 12 during raising and lowering.

[0174] Among them, the third part 15a is a raised structure, and the fourth part 15b is a planar structure, so that when the swing arm 13 rotates from the folded position to the unfolded position, the second pushing part 15 transitions from the raised structure abutting the second surface 1202 to the planar structure supporting the second surface 1202, which is more conducive to pushing the support member 12 to rise stably, and is conducive to supporting the second surface 1202 when the swing arm 13 is in the unfolded position.

[0175] Of course, in other embodiments, the third portion 15a may also be a planar structure, a curved structure, a bulged structure, a raised structure, a rod-shaped structure, a columnar structure, etc., but is not limited thereto; the fourth portion 15b may also be a curved structure, a raised structure, a bulged structure, a raised structure, a rod-shaped structure, a columnar structure, etc., but is not limited thereto. The specific structure of the second pushing portion 15 can be set according to the actual upward stroke and trajectory requirements of the support member 12, and is not limited to a single one in the embodiments of the present application.

[0176] It should be noted that the first pushing portion 14 is not limited to being disposed on the inner wall and / or outer edge of the first groove 1301, but may also be disposed at any position on the swing arm 13 outside the first groove 1301, and can similarly achieve its function of pushing the support member 12 downward. The second pushing portion 15 is not limited to being disposed on the inner wall and / or outer edge of the second groove 1302, but may also be disposed at any position on the swing arm 13 outside the second groove 1302, and can similarly achieve its function of pushing the support member 12 upward.

[0177] It should also be noted that, in some other embodiments, the first groove 1301 and the second groove 1302 may not be provided. For example, the first pushing portion 14 and the second pushing portion 15 are both protruding structures protruding outward from the swing arm 13 .

[0178] Alternatively, referring to Figures 9a and 15 , the first pusher 14 and the swing arm 13 may be integrally formed as a one-piece structure, thereby improving the structural reliability of the first pusher 14. Furthermore, when the swing arm 13 is provided with the first groove 1301, the inner wall and / or outer edge of the first groove 1301 can be directly formed as a flat or raised first pusher 14, facilitating manufacturing. Of course, in other embodiments, the first pusher 14 and the swing arm 13 may also be formed separately and connected.

[0179] Alternatively, referring to Figures 10a and 14 , the second pusher 15 and the swing arm 13 may be integrally formed as a one-piece structure, thereby improving the structural reliability of the second pusher 15. Furthermore, when the swing arm 13 is provided with a second groove 1302, the inner wall and / or outer edge of the second groove 1302 can be directly formed as a flat or raised second pusher 15, facilitating manufacturing. Of course, in other embodiments, the second pusher 15 and the swing arm 13 may also be formed separately and connected.

[0180] In the above embodiment, the support member 12 is provided with the first and second convex portions 122 and 123 to form the first and second surfaces 1201 and 1202 of different heights. However, in other embodiments, the first and second convex portions 122 and 123 may not be provided.

[0181] Optionally, in another embodiment, please refer to Figures 16 and 17. Figure 16 shows a schematic structural diagram of the support member 12 provided in another embodiment of the present application, and Figure 17 shows a cross-sectional schematic diagram of the support member 12 shown in Figure 16 when it cooperates with the first pushing portion 14 and the second pushing portion 15. Each of the two opposite sides of the support member 12 includes a first recessed portion 125 and a second recessed portion 126, that is, both sides of the support member 12 facing the swing arm 13 include a first recessed portion 125 and a second recessed portion 126. The first recessed portion 125 is located on the side of the support member 12 away from the base 11, and the first recessed portion 125 passes through the top and side of the support member 12 for the first pushing portion 14 to extend into; the inner bottom wall of the first recessed portion 125 includes a first surface 1201. The second recessed portion 126 is located on the side of the support member 12 near the base 11. The second recessed portion 126 extends through the bottom and side of the support member 12 to accommodate the second pusher 15. The inner bottom wall of the second recessed portion 126 includes a second surface 1202. Along the thickness direction h of the support member 12, the height H1 at which the first surface 1201 is located is less than or equal to the height H2 at which the second surface 1202 is located. In this case, both the first pusher 14 and the second pusher 15 are protruding structures extending outward from the swing arm 13. These protruding structures can be various regular or irregular shapes, such as, but not limited to, rod-shaped structures, columnar structures, strip-shaped structures, and hook-shaped structures.

[0182] It can be understood that the first recessed portion 125 and the second recessed portion 126 can be grooves opened on the support member 12 (this situation is exemplarily shown in Figure 16), or can be grooves formed by bending the support member 12, which is not the only limitation in the embodiments of the present application.

[0183] In this arrangement, when the swing arm 13 rotates between the unfolded position and the folded position, the first recessed portion 125 allows the first pushing portion 14 to extend into and avoid and accommodate the first pushing portion 14, and the second recessed portion 126 allows the second pushing portion 15 to extend into and avoid and accommodate the second pushing portion, and the first surface 1201 is provided on the inner bottom wall of the first recessed portion 125 without extending to the outside, and the second surface 1202 is provided on the inner bottom wall of the second recessed portion 126 without extending to the outside, thereby shortening the distance between the support member 12 and the swing arm 13, which is beneficial to reducing the relative height difference between the support member 12 and the swing arm 13, and further beneficial to further reducing the thickness of the folding component 10.

[0184] Furthermore, at least the portion of the support member 12 located between the first recessed portion 125 and the second recessed portion 126 can be constrained between the first pushing portion 14 and the second pushing portion 15. Alternatively, when the first recessed portion 125 has two opposing inner sidewalls, the opposing inner sidewalls of the first recessed portion 125 can constrain the first pushing portion 14, or when the second recessed portion 126 has two opposing inner sidewalls, the opposing inner sidewalls of the second recessed portion 126 can constrain the second pushing portion 15. This can limit the movement of the support member 12 along the rotation axis e, thereby improving the stability of the support member 12 when moving toward or away from the base 11. Furthermore, by adjusting the depths of the first recessed portion 125 and the second recessed portion 126, respectively, the height difference between the first surface 1201 and the second surface 1202 can be changed.

[0185] Alternatively, please refer to Figure 18, which illustrates a schematic structural diagram of a support member 12 provided in another embodiment of the present application. The two first recessed portions 125 on opposite sides of the support member 12 can intersect with each other. In this case, the two first recessed portions 125 can be collectively considered a through-groove with both ends extending through the exterior. Similarly, the two second recessed portions 126 on opposite sides of the support member 12 can also intersect with each other. In this case, the two second recessed portions 126 can be collectively considered a through-groove with both ends extending through the exterior.

[0186] In the above embodiment, the support member 12 is described as being provided with the first recessed portion 125 and the second recessed portion 126 to form the first surface 1201 and the second surface 1202 at different heights. However, the support member 12 is not limited to being provided with only the first recessed portion 125 and the second recessed portion 126, or only the first convex portion 122 and the second convex portion 123 to form the first surface 1201 and the second surface 1202 at different heights.

[0187] Alternatively, in another embodiment, please refer to FIG19 , which shows a schematic structural diagram of a support member 12 provided in another embodiment of the present application. Each of the two opposite sides of the support member 12 includes a first protrusion 122 and a second recess 126. The side of the first protrusion 122 away from the base 11 includes a first surface 1201, and the inner bottom wall of the second recess 126 includes a second surface 1202. The height of the first surface 1201 can also be less than or equal to the height of the second surface 1202. In this case, the swing arm 13 can be provided with or without a first groove 1301 for the first protrusion 122 to extend into. The first pushing portion 14 can be the shape structure described in the above embodiments and will not be repeated here. The second pushing portion 15 is a protruding structure that is provided to protrude outward from the swing arm 13 so as to be able to extend into the second recess 126.

[0188] Optionally, in another embodiment, please refer to Figure 20, which shows a schematic structural diagram of the support member 12 provided in another embodiment of the present application. Each of the two opposite sides of the support member 12 includes a first recessed portion 125 and a second protrusion 123, the inner bottom wall of the first recessed portion 125 includes a first surface 1201, and the side of the second protrusion 123 close to the base 11 includes a second surface 1202, and the height of the first surface 1201 can also be less than or equal to the height of the second surface 1202. In this case, the first pushing portion 14 is a protruding structure protruding outward from the swing arm 13 so as to be able to extend into the first recessed portion 125; the swing arm 13 may or may not be provided with a second groove 1302 for the second protrusion 123 to extend into, and the second pushing portion 15 may be of the shape structure described in the above embodiments, which will not be repeated here.

[0189] It is understood that the structures for providing the first surface 1201 on opposite sides of the support member 12 may be identical or different. For example, if the structures for providing the first surface 1201 on opposite sides of the support member 12 are different, one side of the support member 12 may include the first recessed portion 125, and the inner bottom wall of the first recessed portion 125 may include the first surface 1201, while the other side of the support member 12 may include the first protrusion 122, and the side of the first protrusion 122 facing away from the base 11 may include the first surface 1201. Similarly, the structures for providing the second surface 1202 on opposite sides of the support member 12 may be identical or different.

[0190] It should be noted that the above embodiments describe a case where the height of the first surface 1201 along the thickness direction h of the support member 12 is less than or equal to the height of the second surface 1202. However, in other embodiments, the height of the first surface 1201 along the thickness direction h of the support member 12 may also be greater than the height of the second surface 1202; for example, at least one of the first pushing portion 14 and the second pushing portion 15 may be an elastic structure capable of elastic deformation. Therefore, when the first pushing portion 14 and the second pushing portion 15 push the support member 12, even if the overall thickness dimension formed by the first pushing portion 14, the second pushing portion 15 and the support member 12 is relatively small, the elastic structure can be elastically deformed to prevent the first pushing portion 14 and the second pushing portion 15 from getting stuck due to the small gap between them and the support member 12. This also enables the support member 12 to be pushed down and up while appropriately reducing the thickness dimension of the folding assembly 10.

[0191] Next, the cooperation between the first pushing portion 14 and the supporting member 12 will be described in detail.

[0192] In one embodiment, referring to Figure 15 , the first pusher 14 has a first cam surface 141. Referring to Figures 9a, 9b, and 9c , when the swing arm 13 rotates from the deployed position to the folded position, the first cam surface 141 forms a cam engagement with the first surface 1201. It will be appreciated that the first cam surface 141 is the edge surface of the cam structure and can be a curved surface of various shapes, specifically configured according to the descending stroke or displacement of the support member 12.

[0193] With such arrangement, when the swing arm 13 rotates from the unfolded position to the folded position, it drives the first pushing part 14 and the second pushing part 15 to rotate toward the base 11. When the first pushing part 14 rotates to contact the first surface 1201, it can apply a downward thrust or pressure to the support member 12 through its first cam surface 141 and the first surface 1201 to form a cam fit, so that the support member 12 gradually descends. At the same time, the second pushing part 15 provides support for the support member 12 on the side of the second surface 1202 close to the base 11, which is conducive to the stable descent of the support member 12; in the process of the first cam surface 141 pushing the support member 12 to descend, the first cam surface 141 slides relative to the first surface 1201. The cam fit can improve the stability of the fit and the smoothness of the relative sliding between the first pushing part 14 and the support member 12, and is conducive to controlling the descending stroke or displacement of the support member 12 by changing the shape of the first cam surface 141.

[0194] For example, referring to Figures 15 and 9b , when the first groove 1301 is defined in the swing arm 13, the first cam surface 141 can be located on the inner wall and / or outer edge of the first groove 1301. Alternatively, the first portion 14a of the first pusher 14 has the first cam surface 141; of course, the second portion 14b can also have the first cam surface 141. Optionally, the first cam surface 141 is convex or curved, facilitating downward movement of the support member 12.

[0195] It should be understood that the above example is introduced using the case where the first groove 1301 is provided on the swing arm 13 as an example, but the first cam surface 141 is also applicable to various other cases where the first groove 1301 is not provided on the swing arm 13, and it is only necessary to provide the first cam surface 141 on the first pushing portion 14.

[0196] It should be noted that the first pushing portion 14 is not limited to using the first cam surface 141 to push the support member 12 downward. In other embodiments, the first pushing portion 14 can use various other shapes to push the support member 12 downward, such as a cylindrical structure, a polyhedron structure, a cut-angle structure, an edge structure, etc., but is not limited thereto.

[0197] Optionally, in one embodiment, referring to FIG. 9 c , when the swing arm 13 is in the folded position, the first pushing portion 14 contacts the first surface 1201 , which can limit the support member 12 from rising when subjected to an external force, thereby improving the stability of the support member 12 . At the same time, please refer to Figure 10c. When the swing arm 13 is in the folded position, there is a gap d1 between the second pushing portion 15 and the second surface 1202, that is, there is a gap d1 between the surface of the second pushing portion 15 (for example, the second cam surface 151 described below) and the second surface 1202; that is, the second pushing portion 15 is not in contact with the second surface 1202 (at this time, the support member 12 can be supported on the base 11, or another supporting structure can be provided to support the support member 12). At this time, along the projection of the direction f in which the support member 12 moves toward or away from the base 11, the second pushing portion 15 and the support member 12 may overlap or not overlap; therefore, when the swing arm 13 rotates between the unfolded position and the folded position, the support member 12 and the first pushing portion 14 and the second pushing portion 15 have a certain amount of room for movement, rather than the state in which the support member 12 and the first pushing portion 14 and the second pushing portion 15 are all tightly pressed against each other, so that the first pushing portion 14 and the second pushing portion 15 can respectively push the support member 12 down and up more smoothly.

[0198] Optionally, referring to Figures 14 and 15 , the first pushing portion 14 has a first contact surface 142. Referring to Figure 9c , when the swing arm 13 is in the folded position, the first contact surface 142 is in surface contact with the first surface 1201. This improves the stability of the contact between the first pushing portion 14 and the first surface 1201 compared to line contact or point contact.

[0199] It can be understood that the first contact surface 142 can be a plane or a curved surface; when the first contact surface 142 is a plane, the first surface 1201 also has a corresponding surface contact between the plane and the first contact surface 142 (Figures 9c and 15 exemplarily show this situation); when the first contact surface 142 is a curved surface, the first surface 1201 also has a corresponding surface contact between the curved surface and the first contact surface 142.

[0200] For example, referring to Figures 14 and 15 , when the first groove 1301 is formed in the swing arm 13, the first contact surface 142 can be provided on the inner wall and / or outer edge of the first groove 1301. Optionally, the second portion 14b of the first pushing portion 14 has the first contact surface 142; of course, the first contact surface 142 can also extend onto the first portion 14a. For example, the first contact surface 142 is a curved surface that makes surface contact with a corresponding curved surface on the support member 12.

[0201] Please refer to Figures 9a, 9b and 9c in sequence. When the swing arm 13 rotates from the unfolded position to the folded position, the first pushing portion 14 can gradually transition from the cam cooperation between the first cam surface 141 and the first surface 1201 to the contact between the first contact surface 142 and the first surface 1201.

[0202] It can be understood that the above example is introduced using the case where the first groove 1301 is provided on the swing arm 13 as an example, but the first contact surface 142 is also applicable to various other cases where the first groove 1301 is not provided on the swing arm 13. It is only necessary to provide the first contact surface 142 on the first pushing portion 14.

[0203] Of course, in some other embodiments, when the swing arm 13 is in the folded position, the first pushing portion 14 and the first surface 1201 may also be in line contact or point contact.

[0204] It should be noted that, in some other embodiments, when the swing arm 13 is in the folded position, a gap may exist between the first pushing portion 14 and the first surface 1201 without contact (for example, a gap exists between the first pushing portion 14 and the first surface 1201 but the first pushing portion 14 is still located on the side of the first surface 1201 away from the base 11, thereby limiting the support member 12 and restricting the support member 12 from rising), and the second pushing portion 15 may be in contact with the second surface 1202, thereby facilitating support of the support member 12. In some other embodiments, when the swing arm 13 is in the folded position, the first pushing portion 14 may be in contact with the first surface 1201, and the second pushing portion 15 may also be in contact with the second surface 1202.

[0205] Alternatively, in one embodiment, referring to Figures 9c and 10c, when the swing arm 13 is in the folded position, the support member 12 is supported on the base 11. This not only improves the stability of the support member 12 but also facilitates the support member 12 to descend to its lowest position, thereby providing more space on the side of the support member 12 away from the base 11 to accommodate the bent foldable portion 210. At this time, the second push portion 15 may or may not be in contact with the second surface 1202.

[0206] For example, please refer to Figures 9a to 9c. When a avoidance groove 120 is provided on one side of the main body 121 of the support member 12 close to the base 11; when the swing arm 13 is in the folded position, the inner bottom wall of the avoidance groove 120 is supported on the connecting portion 112 of the base 11, so as to reduce the thickness of the main body 121 and enable the support member 12 to have a larger downward displacement.

[0207] Of course, in some other embodiments, the avoidance groove 120 may not be provided, for example, the first protrusion 122 or the lower end of the support member 12 is supported on the base 11 .

[0208] It should be noted that, in some other embodiments, when the swing arm 13 is in the folded position, the second pushing portion 15 and the second surface 1202 can be in contact with each other, and the support member 12 can be supported on the second pushing portion 15. At this time, the support member 12 does not need to be supported on the base 11.

[0209] Next, the cooperation between the second pushing portion 15 and the supporting member 12 will be described in detail.

[0210] In one embodiment, as shown in Figure 14 , the second pusher 15 has a second cam surface 151. As shown in Figures 10a to 10c , when the swing arm 13 rotates between the deployed and folded positions, the second cam surface 151 forms a cam engagement with the second surface 1202. It will be appreciated that the second cam surface 151 is the edge surface of the cam structure and can be a curved surface of various shapes, specifically configured according to the travel or displacement of the support member 12.

[0211] With such arrangement, when the swing arm 13 rotates from the folded position to the unfolded position, the first pushing portion 14 and the second pushing portion 15 are driven to rotate back to the base 11. When the second pushing portion 15 rotates to contact the second surface 1202, the second cam surface 151 thereof can form a cam cooperation with the second surface 1202 to apply an upward thrust to the support member 12, so that the support member 12 gradually rises. At the same time, the first pushing portion 14 provides a limit for the support member 12 on the side of the support member 12 away from the base 11 (the first pushing portion 14 and the support member 12 can be in contact or not), assisting in controlling the stroke and trajectory of the support member 12, which is conducive to the stable rise of the support member 12; in the process of the second cam surface 151 pushing the support member 12 to rise, the second cam surface 151 slides relative to the second surface 1202. The cam cooperation method can improve the stability of the cooperation between the second pushing portion 15 and the support member 12 and the smoothness of the relative sliding, and the stroke or displacement of the support member 12 can be controlled by changing the shape of the second cam surface 151.

[0212] Please refer to Figures 9a to 10c. When the swing arm 13 rotates from the unfolded position to the folded position, it drives the first pushing part 14 and the second pushing part 15 to rotate toward the base 11. The first pushing part 14 pushes the support member 12 to descend. During the rotation of the second pushing part 15, the second cam surface 151 can cooperate with the second surface 1202 cam to support the support member 12, which is beneficial for the second pushing part 15 and the first pushing part 14 to cooperate with each other and facilitate the stable descent of the support member 12.

[0213] For example, referring to Figures 14 and 10b , when the second groove 1302 is defined in the swing arm 13, the second cam surface 151 can be located on the inner wall and / or outer edge of the second groove 1302. Alternatively, the third portion 15a of the second pushing portion 15 may include the second cam surface 151; of course, the fourth portion 15b may also include the second cam surface 151. Optionally, the second cam surface 151 may be in the form of an outwardly convex protrusion or arcuate surface, facilitating the upward and downward movement of the support member 12.

[0214] It should be understood that the above example is introduced using the case where the second groove 1302 is provided on the swing arm 13 as an example, but the second cam surface 151 is also applicable to various other cases where the second groove 1302 is not provided on the swing arm 13, and it is only necessary to provide the second cam surface 151 on the second pushing portion 15.

[0215] It should be noted that the second pushing portion 15 is not limited to the second cam surface 151 and the second surface 1202. In other embodiments, the second pushing portion 15 can adopt various other shapes to push the support member 12 upward or support the support member 12 downward, such as a cylindrical structure, a polyhedron structure, a cut-angle structure, an edge structure, etc., but is not limited thereto.

[0216] Alternatively, in one embodiment, referring to Figures 10a and 9a, when the swing arm 13 is in the deployed position, the second push portion 15 contacts the second surface 1202 to support the support member 12, while a gap d2 is defined between the first push portion 14 and the first surface 1201. This means that a gap d2 exists between the surface of the first push portion 14 (e.g., the first cam surface 141 described above) and the first surface 1201. Furthermore, the first push portion 14 does not contact the first surface 1201, but the first push portion 14 can be located on a side of the first surface 1201 away from the base 11, thereby limiting the upward movement of the support member 12 when subjected to an external force. Therefore, when the swing arm 13 rotates between the deployed and folded positions, the support member 12 and the first and second push portions 14, 15 have a certain amount of room for movement, rather than being in a state where the support member 12 is in close contact with both the first and second push portions 14, 15. This allows the first and second push portions 14, 15 to more smoothly push the support member 12 downward and upward, respectively.

[0217] Optionally, as shown in Figure 14 , the second pushing portion 15 has a second contact surface 152. As shown in Figure 10a , when the swing arm 13 is in the deployed position, the second contact surface 152 is in surface contact with the second surface 1202. This improves the stability of the contact between the second pushing portion 15 and the second surface 1202 compared to line contact or point contact.

[0218] It can be understood that the second contact surface 152 can be a plane or a curved surface; when the second contact surface 152 is a plane, the second surface 1202 also has a corresponding surface contact between the plane and the second contact surface 152 (Figures 10a and 14 exemplarily show this situation); when the second contact surface 152 is a curved surface, the second surface 1202 also has a corresponding surface contact between the curved surface and the second contact surface 152.

[0219] For example, referring to Figures 14 and 10a, when the second groove 1302 is formed in the swing arm 13, the second contact surface 152 can be provided on the inner wall and / or outer edge of the second groove 1302. Optionally, the fourth portion 15a of the second pushing portion 15 has the second contact surface 152; of course, the second contact surface 152 can also extend to the third portion 15a. For example, the second contact surface 152 is a curved surface that is in surface contact with a corresponding curved surface on the support member 12.

[0220] Please refer to Figures 10a, 10b and 10c in sequence. When the swing arm 13 rotates from the unfolded position to the folded position, the second pushing portion 15 can gradually transition from the contact between the second contact surface 152 and the second surface 1202 to the contact between the second cam surface 151 and the second surface 1202.

[0221] It can be understood that the above example is introduced using the case where the second groove 1302 is provided on the swing arm 13 as an example, but the second contact surface 152 is also applicable to various other cases where the second groove 1302 is not provided on the swing arm 13. It is only necessary to provide a second contact surface 152 on the second pushing portion 15.

[0222] Of course, in some other embodiments, when the swing arm 13 is in the expanded position, the second pushing portion 15 and the second surface 1202 may also be in line contact or point contact.

[0223] It should be noted that, in some other embodiments, when the swing arm 13 is in the expanded position, the first pushing portion 14 may also be in contact with the first surface 1201 .

[0224] In order to improve the stability or stability of the support member 12 when the swing arm 13 is in the expanded position, in one embodiment, please refer to Figures 8 and 14, a first supporting portion 16 is provided on the swing arm 13, and the first supporting portion 16, the first pushing portion 14 and the second pushing portion 15 are arranged in sequence along the direction of the rotation axis of the swing arm 13, and the first pushing portion 14 is located between the first supporting portion 16 and the second pushing portion 15.

[0225] Please refer to Figures 21a to 21c. Figure 21a shows a cross-sectional schematic diagram of the first support portion 16 cooperating with the support member 12 when the swing arm 13 is in the expanded position. Figure 21b shows a cross-sectional schematic diagram of the first support portion 16 cooperating with the support member 12 when the swing arm 13 is between the expanded position and the folded position. Figure 21c shows a cross-sectional schematic diagram of the first support portion 16 cooperating with the support member when the swing arm 13 is in the folded position.

[0226] Referring to Figure 21a, when the swing arm 13 is in the deployed position, the first support portion 16 is located on the side of the support member 12 close to the base 11, and is used to support the support member 12. Therefore, when the swing arm 13 is in the deployed position, the second pushing portion 15 and the first support portion 16 are used to support the support member 12 on the side of the support member 12 close to the base 11. At the same time, the first pushing portion 14 is located between the second pushing portion 15 and the first support portion 16, and limits the support member 12 on the side of the support member 12 away from the base 11, thereby forming three limit positions for the support member 12, two of which are located below the support member 12 for limit position, and one is located above the support member 12 for limit position. This can form a stable limit structure, effectively reducing the possibility of the support member 12 being deflected or pried.

[0227] It is understood that the first support portion 16 can be a structure of various shapes capable of supporting an object, such as a protrusion or surface structure on the swing arm 13, or a rod-shaped structure, a block-shaped structure, a columnar structure, a hook-shaped structure, etc., but is not limited thereto. Furthermore, the first support portion 16 can be a rigid structure or an elastic structure capable of elastic deformation. Alternatively, the first support portion 16 can have a structure identical or similar to that of the second push portion 15, or alternatively, a structure different from that of the second push portion 15.

[0228] Next, the cooperation between the first supporting portion 16 and the supporting member 12 will be described in detail.

[0229] In one embodiment, as shown in FIG14 , the first support portion 16 has a third contact surface 161. As shown in FIG21 a , when the swing arm 13 is in the deployed position, the third contact surface 161 forms surface contact with the support member 12. This improves the stability of the contact between the first support portion 16 and the support member 12 compared to line or point contact.

[0230] It can be understood that the third contact surface 161 can be a plane or a curved surface; when the third contact surface 161 is a plane, the support member 12 also has a corresponding surface contact between the plane and the third contact surface 161 (Figures 14 and 21a show this situation by way of example); when the third contact surface 161 is a curved surface, the support member 12 also has a corresponding surface contact between the curved surface and the third contact surface 161.

[0231] Of course, in some other embodiments, when the swing arm 13 is in the expanded position, the first supporting portion 16 and the support member 12 may also be in line contact or point contact.

[0232] Alternatively, in one embodiment, referring to Figures 21a to 21c, when the swing arm 13 rotates between the deployed position and the folded position (i.e., when the swing arm 13 rotates between the deployed position and the folded position), the first support portion 16 does not contact the support member 12, i.e., a gap exists between the first support portion 16 and the support member 12. In this way, compared to a case where the first support portion 16 contacts the support member 12 when the swing arm 13 rotates between the deployed position and the folded position, the possibility of friction between the first support portion 16 and the support member 12 can be reduced, thereby reducing the resistance during the descent and ascent of the support member 12 and improving the smoothness of the descent and ascent of the support member 12 controlled by the rotation of the swing arm 13.

[0233] Optionally, as shown in Figure 14 , the first support portion 16 has an inclined surface 162 located on one side of the portion of the first support portion 16 that supports the support member 12. If the first support portion 16 has a third contact surface 161, the inclined surface 162 is located on one side of the third contact surface 161. As shown in Figure 21a , when the swing arm 13 is in the deployed position, the inclined surface 162 does not contact the support member 12 and is tilted away from the support member 12 toward the base 11. Therefore, the direction in which the inclined surface 162 faces creates a clearance space, facilitating the swing arm 13's avoidance of contact with the support member 12 during rotation between the deployed and folded positions.

[0234] It should be understood that the inclined surface 162 can be a substantially flat surface, or a curved surface with a certain curvature but an overall inclination.

[0235] It should be noted that, in order to ensure that the first supporting portion 16 does not contact the support member 12 when the swing arm 13 rotates between the deployed position and the folded position, the above-mentioned solution of providing the inclined surface 162 is not limited to the above-mentioned solution, and various other solutions can be adopted. For example, the shape and structure of the second pushing portion 15, the shape and structure of the portion of the support member 12 that contacts and cooperates with the second pushing portion 15, or the shape and structure of the first supporting portion 16, the shape and structure of the portion of the support member 12 that contacts and cooperates with the first supporting portion 16 can be changed, so that the support member 12 is supported on the second pushing portion 15 during the descent process, rather than on the first supporting portion 16.

[0236] For example, please refer to Figure 14. The second cam surface 151 of the second pushing portion 15 can be set to be raised or convex. Please refer to Figures 10a to 10c, and compare Figures 21a to 21c in sequence. When the swing arm 13 rotates from the unfolded position to the folded position, the second cam surface 151 with a raised or convex shape can be matched with the second surface 1202 cam. Under the same rotation speed of the swing arm 13, compared with the case where the plane is matched with the second surface 1202, the descending speed of the support member 12 can be appropriately reduced, so that the first support portion 16 descends before the support member 12 and separates from the support member 12.

[0237] It can be understood, please refer to Figure 22, which is a schematic diagram of the relationship between two points rotated at the same angle based on the same axis. Point k1 and point k2 rotated based on the same axis o, when rotated at the same angle around the axis o, the vertical distance L1 of the point k1 farther from the axis o descending or rising is greater than the vertical distance L2 of the point k2 closer to the axis o descending or rising, that is, the vertical distance L1 of the point k1 with a larger rotation radius descending or rising is greater than the vertical distance L2 of the point k2 with a smaller rotation radius descending or rising.

[0238] Based on this, by setting the distance between the part of the first supporting portion 16 that is used to contact the support member 12 and the rotation axis e (that is, the rotation radius) to be greater than the distance between the part of the second pushing portion 15 that is used to contact the support member 12 and the rotation axis e (that is, the rotation radius), it can be achieved that when the swing arm 13 rotates from the deployed position to the folded position, the first supporting portion 16 can be separated from the support member 12 earlier than the second pushing portion 15, so that the support member 12 is supported on the second pushing portion 15, and when the swing arm 13 rotates from the folded position to the deployed position, the second pushing portion 15 contacts the support member 12 earlier than the first supporting portion 16 and pushes the support member 12, so that the first supporting portion 16 and the support member 12 are not in contact when the swing arm 13 rotates between the deployed position and the folded position. The above-mentioned solution of designing the shape structure of the second pushing part 15 and the first supporting part 16 is also based on this principle; for example, in the process of the swing arm 13 rotating from the unfolded position to the folded position, the distance between the contact part between the second cam surface 151 that is raised or convex and the support member 12 and the rotation axis e gradually decreases, thereby always supporting the support member 12.

[0239] Alternatively, in one embodiment, referring to Figures 11 and 12 , and also referring to Figures 7a and 8 , each of the two opposing sides of the support member 12 includes a first surface 1201, a second surface 1202, and a third surface 1203. The first surface 1201, the second surface 1202, and the third surface 1203 located on the same side of the support member 12 are respectively configured to contact and cooperate with the first pushing portion 14, the second pushing portion 15, and the first supporting portion 16 on the same side. When the swing arm 13 is in a position between the unfolded and folded positions, referring to Figure 9b , the first pushing portion 14 is located on the side of the first surface 1201 away from the base 11 (see Figure 10b ), the second pushing portion 15 is located on the side of the second surface 1202 closer to the base 11 (see Figure 21b ), and the first supporting portion 16 is located on the side of the third surface 1203 closer to the base 11. Therefore, referring to FIG. 21 a , when the swing arm 13 is in the extended position, the first supporting portion 16 is located on a side of the third surface 1203 close to the base 11 and is used to support the third surface 1203 .

[0240] When the first support portion 16 has the third contact surface 161, the third contact surface 161 is in surface contact with the third surface 1203. When the swing arm 13 rotates between the unfolded position and the folded position, the first support portion 16 may not be in contact with the third surface 1203, thereby reducing resistance during the lifting and lowering of the support member 12.

[0241] 13 , along the thickness direction h of the support member 12 , the height H1 of the first surface 1201 is less than or equal to the height H2 of the second surface 1202 , and the height H1 of the first surface 1201 is less than or equal to the height H3 of the third surface 1203 .

[0242] It should be understood that the height H1 of the first surface 1201 , the height H2 of the second surface 1202 , and the height H3 of the third surface 1203 are heights based on the same reference plane s.

[0243] It can be understood that the third surface 1203 can also be a plane or a curved surface; when the third surface 1203 is a plane, the height H3 of the third surface 1203 is the vertical distance between the third surface 1203 and the reference plane s; when the third surface 1203 is a curved surface, the height H3 of the third surface 1203 is the height of the lowest point of the third surface 1203, that is, the vertical distance between the lowest point of the third surface 1203 and the reference plane s.

[0244] With this arrangement, the technical effect of the height H1 of the first surface 1201 being less than or equal to the height H2 of the second surface 1202 has been described in detail in the previous embodiments and will not be repeated here. The fact that the height H1 of the first surface 1201 is less than or equal to the height H3 of the third surface 1203 also has the same technical effect, facilitating more space on the side of the third surface 1203 near the base 11 for accommodating the first support portion 16, thereby facilitating a reduction in the overall thickness of the first push portion 14, the second push portion 15, the first support portion 16, and the support member 12. This can further reduce the thickness of the folding assembly 10, thereby further reducing the thickness space occupied by the folding device 100.

[0245] Optionally, referring to FIG. 13 , along the thickness direction h of the support member 12 , the height H1 of the first surface 1201 is less than or equal to the height H3 of the third surface 1203 , which is more conducive to reducing the thickness of the folding assembly 10 .

[0246] Optionally, referring to FIG13 , along the thickness direction h of the support member 12, the height H3 of the third surface 1203 is less than the height H2 of the second surface 1202. This facilitates, on the one hand, supporting the second surface 1202 and the third surface 1203 at different heights by the second pushing portion 15 and the first supporting portion 16, respectively, when the swing arm 13 is in the deployed position, thereby further improving the stability of the support member 12. Furthermore, when the distance between the portion of the first supporting portion 16 that contacts the third surface 1203 and the rotation axis e is greater than the distance between the portion of the second pushing portion 15 that contacts the second surface 1202 and the rotation axis e, the distance between the portion of the first supporting portion 16 that contacts the third surface 1203 and the rotation axis e does not need to be excessively large, i.e., it does not need to protrude outward or protrude too far, compared to when the height H3 of the third surface 1203 is greater than the height H2 of the second surface 1202.

[0247] Of course, in some other embodiments, along the thickness direction h of the support member 12 , the height H3 of the third surface 1203 may also be equal to or greater than the height H2 of the second surface 1202 .

[0248] Alternatively, referring to Figures 11 to 13 , the support member 12 includes a main body 121, a first protrusion 122, a second protrusion 123, and a third protrusion 124. A third protrusion 124 is provided on each of two opposing sides of the main body 121. The third protrusion 124 protrudes generally from the main body 121 toward the swing arm 13. The protrusion direction can be generally parallel to the X-axis, or can be angled with the X-axis. The third protrusion 124 can be a protruding structure of various shapes, such as, but not limited to, a block-shaped structure, a columnar structure, or a hook-shaped structure. The side of the third protrusion 124 closest to the base 11 includes a third surface 1203.

[0249] The technical effects of the first and second protrusions 122, 123 as described in detail in the previous embodiments will not be repeated here. The provision of the third protrusion 124 also achieves the same technical effect. A space extending to the exterior below is formed beneath the third protrusion 124, accommodating the first support 16 and minimizing interference with the rotation of the first support 16. Furthermore, by providing the first, second, and third protrusions 122, 123, and 124 at different heights, the first, second, and third surfaces 1201, 1202, and 1203 can be formed at different heights.

[0250] Optionally, please refer to Figure 13. Along the projection of the thickness direction h of the support member 12, the first protrusion 122, the second protrusion 123 and the third protrusion 124 do not overlap with each other, that is, the projections of any two of the first protrusion 122, the second protrusion 123 and the third protrusion 124 do not overlap, which is conducive to the first protrusion 122, the second protrusion 123 and the third protrusion 124 to independently cooperate with the first pushing part 14, the second pushing part 15 and the first supporting part 16, thereby reducing the possibility of interference between them.

[0251] Alternatively, referring to Figures 14 and 15 , the swing arm 13 is provided with a first groove 1301, a second groove 1302, and a third groove 1303. The first groove 1301 is for receiving the first protrusion 122, the second groove 1302 is for receiving the second protrusion 123, and the third groove 1303 is for receiving the third protrusion 124, thereby allowing for the third protrusion 124 to be accommodated. This reduces the distance between the support member 12 and the swing arm 13, thereby facilitating a reduction in the relative height difference between the support member 12 and the swing arm 13, and thereby further reducing the thickness of the folding assembly 10. Furthermore, the inner wall of the third groove 1303 can also limit the third protrusion 124, thereby restricting the movement of the support member 12 along the rotation axis e and improving the stability of the support member 12 when moving toward or away from the base 11.

[0252] For example, when the swing arm 13 is in the folded position, the third protrusion 124 at least partially extends into the third groove 1303 (i.e., the third protrusion 124 may partially or completely extend into the third groove 1303). Referring to Figures 21a, 21b, and 21c, as the swing arm 13 rotates from the deployed position to the folded position, the third protrusion 124 may gradually extend into the third groove 1303. Referring to Figures 21c, 21b, and 21a, as the swing arm 13 rotates from the folded position to the deployed position, the portion of the third protrusion 124 extending into the third groove 1303 may gradually move outward.

[0253] Optionally, referring to Figures 14 and 15 , a first pushing portion 14 is provided on the inner wall and / or outer edge of the first groove 1301. A second pushing portion 15 is provided on the inner wall and / or outer edge of the second groove 1302. A first supporting portion 16 is provided on the inner wall and / or outer edge of the third groove 1303. Specifically, the first supporting portion 16 may be provided only on the inner wall of the third groove 1303, only on the outer edge of the third groove 1303, or both on the inner wall and the outer edge of the third groove 1303.

[0254] It is understood that the inner wall of the third groove 1303 refers to the inner surface surrounding and forming the third groove 1303, including the inner sidewall or inner bottom wall of the third groove 1303; when the bottom of the third groove 1303 is connected to the shaft through hole 1305, the surface of the rotating shaft 193 located at the bottom of the third groove 1303 serves as the inner bottom wall of the third groove 1303. The outer edge of the third groove 1303 refers to the outer peripheral edge of the slot opening of the third groove 1303.

[0255] With this arrangement, the technical effects of providing the first pushing portion 14 on the inner wall and / or outer edge of the first groove 1301 and the second pushing portion 15 on the inner wall and / or outer edge of the second groove 1302 have been described in detail in the previous embodiments and will not be repeated here. The provision of the first supporting portion 16 on the inner wall and / or outer edge of the third groove 1303 also has the same technical effects, significantly reducing the length of the first supporting portion 16 protruding outward from the swing arm 13, and even eliminating the need for the first supporting portion 16 to protrude outward (for example, the inner wall and / or outer edge of the third groove 1303 directly forms the first supporting portion 16). This can further reduce the distance between the support member 12 and the swing arm 13, further reducing the relative height difference between the support member 12 and the swing arm 13. This not only helps to further reduce the thickness of the folding assembly 10, but also improves the stability of the support member 12 during movement due to the reduced height difference.

[0256] For example, referring to Figure 14 , a first support portion 16 is provided on the inner sidewall and outer edge of the third groove 1303. Specifically, the first support portion 16 includes a connected fifth portion 16a and a sixth portion 16b. The fifth portion 16a is provided on the inner sidewall of the third groove 1303, and the sixth portion 16b is provided on the outer edge of the third groove 1303. When the swing arm 13 is in the deployed position, the sixth portion 16b contacts the third surface 1203 and thus has a third contact surface 161. When the swing arm 13 rotates between the deployed and folded positions, neither the fifth portion 16a nor the sixth portion 16b contacts the third surface 1203, and the fifth portion 16a may have an inclined surface 162.

[0257] Of course, the first support portion 16 is not limited to being set on the inner wall and / or outer edge of the third groove 1303, but can also be set at any position outside the third groove 1303 on the swing arm 13, and can also achieve its function of supporting the support member 12 when the swing arm 13 is in the expanded position.

[0258] It should be noted that, in some other embodiments, the third groove 1303 may not be provided. For example, the first supporting portion 16 is a protruding structure that protrudes outward from the swing arm 13 .

[0259] It should also be noted that the support member 12 is not limited to having the third protrusion 124 and the third surface 1203 on the third protrusion 124. In other embodiments, as shown in Figures 16 and 17, at least one side of the support member 12 may be provided with a third recess 127 instead of the third protrusion 124. The third recess 127 is located on the side of the support member 12 near the base 11 and extends through the bottom and side of the support member 12 to accommodate the first support portion 16. The inner bottom wall of the third recess 127 includes the third surface 1203. In this case, the first support portion 16 corresponding to the location of the third recess 127 is a protruding structure extending outward from the swing arm 13. The protruding structure can be various regular or irregular shapes, such as, but not limited to, a rod-shaped structure, a columnar structure, a strip-shaped structure, a hook-shaped structure, etc.

[0260] Optionally, referring to FIG18 , when each of the two opposite sides of the support member 12 includes a third recessed portion 127 , the two third recessed portions 127 on both sides may be interconnected. In this case, the two third recessed portions 127 may be collectively regarded as a through groove with both ends extending through the outside.

[0261] Optionally, the first support portion 16 and the swing arm 13 can be integrally formed into a one-piece structure, thereby improving the structural reliability of the first support portion 16. Furthermore, when the swing arm 13 is provided with the third groove 1303, the inner wall and / or outer edge of the third groove 1303 can be directly formed into a flat or raised first support portion 16, facilitating manufacturing. Of course, in other embodiments, the first support portion 16 and the swing arm 13 can also be formed separately and connected.

[0262] In the above embodiment, a first support portion 16 for supporting the support member 12 is provided on the swing arm 13 to improve the stability or stability of the support member 12 when the swing arm 13 is in the deployed position. However, the embodiment for improving the stability or stability of the support member 12 when the swing arm 13 is in the deployed position is not limited to this.

[0263] Optionally, in another embodiment, please refer to Figure 23, which shows a schematic structural diagram of the swing arm 13 provided in another embodiment of the present application. A second supporting portion 16' is provided on the swing arm 13, and the first pushing portion 14, the second pushing portion 15, and the second supporting portion 16' are arranged in sequence along the direction of the rotation axis e of the swing arm 13, and the second pushing portion 15 is located between the first pushing portion 14 and the second supporting portion 16'. When the swing arm 13 is in the expanded position, the second supporting portion 16' is located on the side of the support member 12 away from the base 11, and is used to limit the support member 12. At this time, three limiting positions can also be formed for the support member 12, and two of them are located above the support member 12 for limiting, and one is located below the support member 12 for limiting, which can form a stable limiting structure and effectively reduce the possibility of the support member 12 being deflected or pried.

[0264] It can be understood that the second support portion 16' can be a structure of various shapes that can limit an object or block an object, for example, it can be a protruding structure or a surface structure on the swing arm 13, or it can be a rod-shaped structure, a block-shaped structure, a columnar structure, a hook-shaped structure, etc., but is not limited thereto; in addition, the second support portion 16' can be a rigid structure or an elastic structure that can undergo elastic deformation.

[0265] Optionally, when the swing arm 13 rotates between the deployed position and the folded position (that is, when the swing arm 13 rotates between the deployed position and the folded position), the second support portion 16' may not contact the support member 12 to reduce the resistance experienced by the support member 12, thereby facilitating smoother lifting and lowering movement of the support member 12.

[0266] Of course, in other embodiments, when the swing arm 13 rotates between the unfolded position and the folded position, the second support portion 16' may also contact the support member 12, for example, to push the support member 12 toward the base 11. For example, the second support portion 16' may have a structure that is the same as or similar to that of the first push portion 14, or may have a structure that is different from that of the first push portion 14.

[0267] Alternatively, please refer to Figure 24, which shows a schematic structural diagram of a support member 12 provided in another embodiment of the present application. A first surface 1201, a second surface 1202, and a fourth surface 1204 are provided on opposite sides of the support member 12. The positions of the first surface 1201, the second surface 1202, and the fourth surface 1204 located on the same side of the support member 12 respectively correspond to the positions of the first pushing portion 14, the second pushing portion 15, and the second supporting portion 16' on the same side. When the swing arm 13 is in the expanded position, the second supporting portion 16' is located on the side of the fourth surface 1204 away from the base 11. For the relevant introduction to the first surface 1201 and the second surface 1202, please refer to the above embodiments and will not be repeated here.

[0268] Further, referring to Figures 24 and 25 , Figure 25 shows a right side view of the support member 12 shown in Figure 24 . Along the thickness direction h of the support member 12, the height H1 of the first surface 1201 is less than or equal to the height H2 of the second surface 1202, and the height H4 of the fourth surface 1204 is less than or equal to the height H2 of the second surface 1202. It should be understood that the height H1 of the first surface 1201, the height H2 of the second surface 1202, and the height H4 of the fourth surface 1204 are based on the same reference plane s.

[0269] With this arrangement, the technical effect of the height H1 of the first surface 1201 being less than or equal to the height H2 of the second surface 1202 has been described in detail in the previous embodiments and will not be repeated here. The fact that the height H4 of the fourth surface 1204 is less than or equal to the height H2 of the second surface 1202 also has the same technical effect, facilitating more space on the side of the fourth surface 1204 away from the base 11 for accommodating the second support portion 16'. This, in turn, facilitates reducing the overall thickness of the first push portion 14, the second push portion 15, the second support portion 16', and the support member 12, further reducing the thickness of the folding assembly 10 and, therefore, further reducing the space occupied by the folding device 100.

[0270] Alternatively, please continue to refer to Figure 24. The support member 12 includes a main body 121, two first protrusions 122, two second protrusions 123, and two fourth protrusions 128. A fourth protrusion 128 is protruded on each of the two opposite sides of the main body 121. The fourth protrusion 128 is generally protruded from the main body 121 toward the swing arm 13. The protrusion direction can be generally parallel to the X-axis direction, and of course, it can also be at a certain angle to the X-axis. The fourth protrusion 128 can be a protruding structure of various shapes, such as a block structure, a columnar structure, a hook structure, etc., but is not limited thereto. The side of the fourth protrusion 128 away from the base 11 includes a fourth surface 1204. For the relevant introduction of the main body 121, the first protrusion 122, and the second protrusion 123, please refer to the above embodiments and will not be repeated here.

[0271] The technical effects of the first and second protrusions 122, 123 as described in detail in the previous embodiments will not be repeated here. The provision of the fourth protrusion 128 also achieves the same technical effect. A space extending to the upper exterior is formed above the fourth protrusion 128, accommodating the second support portion 16' and minimizing interference with the rotation of the second support portion 16'. Furthermore, by providing the first, second, and fourth protrusions 122, 123, and 128 at different heights, the first, second, and fourth surfaces 1201, 1202, and 1204 can be formed at different heights.

[0272] Optionally, please continue to refer to Figure 24. Along the projection of the thickness direction h of the support member 12, the first protrusion 122, the second protrusion 123 and the fourth protrusion 128 do not overlap with each other, that is, the projections of any two of the first protrusion 122, the second protrusion 123 and the fourth protrusion 128 do not overlap, which is conducive to the first protrusion 122, the second protrusion 123 and the fourth protrusion 128 to independently cooperate with the first pushing part 14, the second pushing part 15 and the second supporting part 16', thereby reducing the possibility of interference between them.

[0273] Optionally, please refer to Figure 23, a first groove 1301, a second groove 1302 and a fourth groove 1304 are provided on the swing arm 13, the first groove 1301 is used for the first protrusion 122 to extend into, the second groove 1302 is used for the second protrusion 123 to extend into, and the fourth groove 1304 is used for the fourth protrusion 128 to extend into so as to avoid and accommodate the fourth protrusion 128, that is, when the swing arm 13 rotates between the unfolded position and the folded position, the fourth protrusion 128 can extend into the fourth groove 1304, for example, when the swing arm 13 is in the unfolded position, the fourth protrusion 128 at least partially extends into the fourth groove 1304 (that is, the fourth protrusion 128 can partially extend into the fourth groove 1304, or can completely extend into the fourth groove 1304). In this way, the distance between the support member 12 and the swing arm 13 can be shortened, which is beneficial to reducing the relative height difference between the support member 12 and the swing arm 13, and then beneficial to further reducing the thickness of the folding component 10. In addition, the inner wall of the fourth groove 1304 can also limit the fourth protrusion 128 to limit the movement of the support member 12 along the direction of the rotation axis e, thereby improving the stability of the support member 12 when moving toward or away from the base 11.

[0274] Optionally, referring to FIG. 23 , the second support portion 16 ′ is provided on the inner wall and / or outer edge of the fourth groove 1304. Specifically, the second support portion 16 ′ may be provided only on the inner wall of the fourth groove 1304, only on the outer edge of the fourth groove 1304, or both on the inner wall and the outer edge of the fourth groove 1304.

[0275] It can be understood that the inner wall of the fourth groove 1304 refers to the inner surface surrounding and forming the fourth groove 1304, including the inner side wall or inner bottom wall of the fourth groove 1304. When the bottom of the fourth groove 1304 is connected to the shaft through hole 1305, the surface of the rotating shaft 193 located at the bottom of the fourth groove 1304 serves as the inner bottom wall of the fourth groove 1304. The outer edge of the fourth groove 1304 refers to the outer peripheral edge of the slot opening of the fourth groove 1304.

[0276] With this arrangement, the technical effects of providing the first pushing portion 14 on the inner wall and / or outer edge of the first groove 1301 and the second pushing portion 15 on the inner wall and / or outer edge of the second groove 1302 have been described in detail in the previous embodiments and will not be repeated here. The second supporting portion 16' provided on the inner wall and / or outer edge of the fourth groove 1304 also has the same technical effect, significantly reducing the length of the second supporting portion 16' protruding outward from the swing arm 13, and even eliminating the need for the second supporting portion 16' to protrude outward (for example, the inner wall and / or outer edge of the fourth groove 1304 directly forms the second supporting portion 16'). This further reduces the distance between the support member 12 and the swing arm 13, further reducing the relative height difference between the support member 12 and the swing arm 13. This not only helps to further reduce the thickness of the folding assembly 10, but also improves the stability of the support member 12 during movement due to the reduced height difference.

[0277] Of course, the second support portion 16' is not limited to being set on the inner wall and / or outer edge of the fourth groove 1304, but can also be set at any position outside the fourth groove 1304 on the swing arm 13, and can also achieve its function of limiting the support member 12 when the swing arm 13 is in the expanded position.

[0278] It should be noted that, in some other embodiments, the fourth groove 1304 may not be provided. For example, the second supporting portion 16 ′ is a protruding structure that protrudes outward from the swing arm 13 .

[0279] It should also be noted that the support member 12 is not limited to having the fourth protrusion 128 and the fourth surface 1204 on the fourth protrusion 128. In other embodiments, as shown in FIG. 26 , the fourth protrusion 128 may be omitted from at least one side of the support member 12 and replaced with a fourth recess 129. The fourth recess 129 is located on the side of the support member 12 away from the base 11 and extends through the top and side of the support member 12 to accommodate the second support portion 16'. The inner bottom wall of the fourth recess 129 includes the fourth surface 1204. In this case, the second support portion 16' corresponding to the location of the fourth recess 129 is a protruding structure extending outward from the swing arm 13. The protruding structure may be of various regular or irregular shapes, such as, but not limited to, a rod-shaped structure, a columnar structure, a strip-shaped structure, a hook-shaped structure, etc.

[0280] In addition, the swing arm 13 is not limited to being provided with the first pushing portion 14, the second pushing portion 15, the first supporting portion 16, the second supporting portion 16', etc., and one or more other pushing portions or supporting portions may be provided in addition to the first pushing portion 14 and the second pushing portion 15. The number of the first pushing portion 14 and the second pushing portion 15 can be one or more, and is not limited to a single number in the embodiments of the present application.

[0281] In one embodiment, referring to Figures 7a and 9a, the swing arms 13 on both sides of the support member 12 can be symmetrically arranged with respect to the longitudinal section m of the support member 12, thereby improving the stability of the swing arms 13 on both sides of the support member 12 in controlling the raising and lowering of the support member 12. Of course, in other embodiments, the swing arms 13 on both sides of the support member 12 can also be asymmetrically arranged.

[0282] Optionally, referring to Figures 7a, 8 and 9a, the first pushing portion 14 on the two swing arms 13 on both sides of the support member 12, the second pushing portion 15 on the two swing arms 13 on both sides of the support member 12, and the first supporting portion 16 on the two swing arms 13 on both sides of the support member 12 can be symmetrically arranged about the longitudinal section m, which is beneficial to improving the stability of the two swing arms 13 on both sides of the support member 12 and the first pushing portion 14, the second pushing portion 15 and the first supporting portion 16 arranged thereon to control the lifting and lowering of the support member 12.

[0283] Of course, in other embodiments, at least one of the first pushing portions 14 on the two swing arms 13 on either side of the support member 12, the second pushing portions 15 on the two swing arms 13 on either side of the support member 12, and the first supporting portions 16 on the two swing arms 13 on either side of the support member 12 may not be symmetrically arranged with respect to the longitudinal section m. For example, the first pushing portions 14 on the two swing arms 13 on either side of the support member 12 may be staggered along the direction of the rotation axis e, the second pushing portions 15 on the two swing arms 13 on either side of the support member 12 may also be staggered along the direction of the rotation axis e, and the first supporting portions 16 on the two swing arms 13 on either side of the support member 12 may also be staggered along the direction of the rotation axis e.

[0284] In order to limit the swing arm 13 from further rotation when it rotates to the deployed position, in one embodiment, please refer to Figures 14, 27 and 28. Figure 27 shows a schematic structural diagram of a folding assembly 10 provided in another embodiment of the present application, and Figure 28 shows an exploded view of the folding assembly 10 shown in Figure 27. A first limiting portion 171 is provided on the swing arm 13, and a first limiting matching portion 181 is provided on the base 11. The first limiting portion 171 is used to abut against the first limiting matching portion 181 when the swing arm 13 rotates from the folded position to the deployed position, so as to limit the swing arm 13 from further rotation, thereby improving the stability of the swing arm 13 when it is in the deployed position, and further improving the stability of the terminal device 1000 when it is in the deployed state.

[0285] It is understood that the first position-limiting portion 171 and the first position-limiting mating portion 181 can be of various shapes, such as a raised structure, a block structure, a rod-shaped structure, a plate-shaped structure, a surface structure, etc., but are not limited thereto, as long as the first position-limiting portion 171 and the first position-limiting mating portion 181 can abut against each other. The first position-limiting portion 171 can be set at any position on the swing arm 13, and the position of the first position-limiting mating portion 181 corresponds to the position of the first position-limiting portion 171, so that the first position-limiting portion 171 and the first position-limiting mating portion 181 can abut against each other when the swing arm 13 rotates to the deployed position.

[0286] For example, referring to Figures 14, 27, and 28, the first limiting portion 171 is disposed at the end of the swing arm 13 along the direction of its rotation axis e, specifically, on the end surface of the end and located on one side of the rotation axis 193. The first limiting mating portion 181 can be disposed on the end surface of the shaft seat 111 near the swing arm 13. Therefore, the first limiting portion 171 and the first limiting mating portion 181 are located between the swing arm 13 and the shaft seat 111 and are approximately at the same position along the direction of the rotation axis e. The first limiting portion 171 and the first limiting mating portion 181 can both be protruding block structures. When the swing arm 13 rotates from the folded position to the unfolded position, one end of the first limiting portion 171 abuts against one end of the first limiting mating portion 181.

[0287] Optionally, when the swing arm 13 rotates from the folded position to the deployed position, the first position-limiting portion 171 and the first position-limiting mating portion 181 may be in surface contact, which is beneficial for improving the position-limiting stability compared to line contact and point contact. Of course, in other embodiments, when the swing arm 13 rotates from the folded position to the deployed position, the first position-limiting portion 171 and the first position-limiting mating portion 181 may also be in line contact or point contact.

[0288] In order to limit the swing arm 13 from continuing to rotate when it rotates to the folded position, in one embodiment, please refer to Figures 14, 27 and 28, a second limiting portion 172 is provided on the swing arm 13, and a second limiting matching portion 182 is provided on the base 11. The second limiting portion 172 is used to abut against the second limiting matching portion 182 when the swing arm 13 rotates from the unfolded position to the folded position, so as to limit the swing arm 13 from continuing to rotate, which is beneficial to improve the stability of the swing arm 13 when it is in the folded position.

[0289] It is understood that the second limiting portion 172 and the second limiting matching portion 182 can be of various shapes, such as, but not limited to, a raised structure, a block structure, a rod-shaped structure, a plate-shaped structure, or a surface structure, as long as the second limiting portion 172 and the second limiting matching portion 182 can abut against each other. The second limiting portion 172 can be disposed at any position on the swing arm 13, and the position of the second limiting matching portion 182 corresponds to the position of the second limiting portion 172, so that the first limiting portion 171 and the second limiting matching portion 182 can abut against each other when the swing arm 13 rotates to the folded position.

[0290] For example, referring to Figures 14, 27, and 28, the second limiting portion 172 is disposed at the end of the swing arm 13 along the direction of its rotation axis e, specifically, on the end surface of the end and located on one side of the rotation axis 193. The second limiting mating portion 182 can be disposed on the end surface of the shaft seat 111 near the swing arm 13. Therefore, the second limiting portion 172 and the second limiting mating portion 182 are located between the swing arm 13 and the shaft seat 111 and are approximately at the same position along the direction of the rotation axis e. The second limiting portion 172 and the second limiting mating portion 182 can both be protruding block structures. When the swing arm 13 rotates from the unfolded position to the folded position, one end of the second limiting portion 172 abuts against one end of the second limiting mating portion 182.

[0291] Optionally, the second limiting portion 172 and the first limiting portion 171 can be an integral structure, for example, formed on the same first protrusion structure, and the second limiting matching portion 182 and the first limiting matching portion 181 can be an integral structure, for example, formed on the same second protrusion structure; when the swing arm 13 rotates to the unfolded position, one end of the first protrusion structure is abutted against one end of the second protrusion structure, and when the swing arm 13 rotates to the folded position, the other end of the first protrusion structure is abutted against the other end of the second protrusion structure.

[0292] Optionally, when the swing arm 13 rotates from the deployed position to the folded position, the second limiting portion 172 and the second limiting matching portion 182 may be in surface contact, which is beneficial for improving the limiting stability compared to line contact and point contact. Of course, in other embodiments, when the swing arm 13 rotates from the folded position to the deployed position, the second limiting portion 172 and the second limiting matching portion 182 may also be in line contact or point contact.

[0293] To better support the foldable portion 210 of the foldable screen 200, in another embodiment, as shown in Figures 27 and 28, the foldable assembly 10 further includes a door panel 191. The door panel 191 is disposed on the support member 12 and is located on the side of the support member 12 away from the base 11. The relative positions of the door panel 191 and the support member 12 are fixed. The door panel 191 can be a plate-like structure of various shapes. When the terminal device 1000 is in the unfolded state, the swing arm 13 rotates to the unfolded position, and the door panel 191 can support the flat foldable portion 210.

[0294] Optionally, please refer to Figure 28. The door panel 191 and the support member 12 are formed separately, that is, the two are not an integrated structure, which is conducive to separately processing and manufacturing the door panel 191 and the support member 12 and then assembling them. It is not only convenient for production and processing, but also convenient for replacing the door panel 191, and has higher flexibility.

[0295] Optionally, referring to FIG. 28 , a limiting groove 1205 is provided on a side of the support member 12 away from the base 11 , and the door panel 191 is disposed in the limiting groove 1205 to facilitate installation and positioning of the door panel 191 .

[0296] It should be noted that, in some other embodiments, the door panel 191 and the support member 12 may also be an integrated structure. In this case, the support member 12 also acts as the door panel 191 , that is, the side of the support member 12 away from the base 11 can directly support the foldable part 210 .

[0297] In order to facilitate the support or protection of the base 11, in another embodiment, please refer to Figures 27 and 28, the folding assembly 10 also includes a shaft cover 192, the base 11 is arranged on the shaft cover 192 and is located between the support member 12 and the shaft cover 192, that is, the shaft cover 192 is located on the side of the base 11 away from the support member 12, and the shaft cover 192 can be used to support the base 11 and also to protect the base 11 and the support member 12.

[0298] It is understood that the base 11 can be mounted on the shaft cover 192 in various ways, such as, but not limited to, a pin and hole fit, a threaded connection (e.g., a screw or bolt connection), or an adhesive connection. When the folding device 100 includes multiple folding assemblies 10, the shaft covers 192 of each folding assembly 10 can be connected to form an integrated structure, or they can be provided separately.

[0299] Optionally, referring to Figures 27 and 28 , a clearance groove 1306 is provided on the swing arm 13. When the swing arm 13 is in the deployed position, the clearance groove 1306 is located on the side of the swing arm 13 near the shaft cover 192, and the side edge 1921 of the shaft cover 192 extends into the clearance groove 1306. The provision of the clearance groove 1306, on the one hand, allows the side edge 1921 of the shaft cover 192 to be avoided, thereby facilitating smooth rotation of the swing arm 13 to the deployed position without interfering with the shaft cover 192. On the other hand, since the side edge 1921 of the shaft cover 192 extends into the clearance groove 1306, compared to a case where the clearance groove 1306 is not provided, the thickness of the swing arm 13 can be partially overlapped with the thickness of the shaft cover 192, thereby reducing the overall thickness of the swing arm 13 and the shaft cover 192, thereby further reducing the thickness of the folding assembly 10.

[0300] It should be noted that, in some other embodiments, the shaft cover 192 may not be provided separately, and the base 11 may serve as the shaft cover 192. In this case, it can also be understood that the shaft cover 192 and the base 11 are an integrally formed one-piece structure.

[0301] The above is only a specific implementation method of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with this technical field can easily think of changes or replacements within the technical scope disclosed in this application, which should be covered by the protection scope of the present application.

Claims

1. A folding assembly, characterized in that: The folding assembly comprises: base; supports; and at least two swing arms, disposed on either side of the support member, the swing arms being rotatably connected to the base so as to be able to rotate between an unfolded position and a folded position; The swing arm is provided with a first pushing portion and a second pushing portion, and the first pushing portion and the second pushing portion are sequentially arranged along the direction of the rotation axis of the swing arm; the support member includes a first surface and a second surface, the first surface is arranged opposite to the first pushing portion, and the second surface is arranged opposite to the second pushing portion; When the swing arm rotates from the deployed position toward the folded position, the first pushing portion abuts the first surface to push the support member toward the base; when the swing arm rotates from the folded position toward the deployed position, the second pushing portion abuts the second surface to push the support member away from the base.

2. The folding assembly according to claim 1, characterized in that: Each of the two sides of the support member includes the first surface and the second surface, the first surface is used for contacting and cooperating with the first pushing portion on the same side, and the second surface is used for contacting and cooperating with the second pushing portion on the same side; When the swing arm is at a position between the unfolded position and the folded position, the first pushing portion is located on a side of the first surface away from the base, and the second pushing portion is located on a side of the second surface close to the base.

3. The folding assembly according to claim 2, characterized in that: Along the thickness direction of the support member, the height of the first surface is less than or equal to the height of the second surface; the thickness direction of the support member is parallel to the direction in which the support member moves toward or away from the base.

4. The folding assembly according to claim 3, characterized in that: The support member comprises: Main body; a first protrusion, the first protrusion being provided on each of both sides of the main body; and a second convex portion, wherein each of the two sides of the main body is provided with the second convex portion; The side of the first protrusion away from the base includes the first surface, and the side of the second protrusion close to the base includes the second surface.

5. The folding assembly according to claim 4, characterized in that: The swing arm is provided with a first groove and a second groove; when the swing arm is in the unfolded position, the first protrusion at least partially extends into the first groove; when the swing arm is in the folded position, the second protrusion at least partially extends into the second groove; The first pushing portion is provided on the inner wall and / or outer edge of the first groove, and the second pushing portion is provided on the inner wall and / or outer edge of the second groove.

6. The folding assembly according to claim 4, characterized in that: The base is provided with an avoidance space, the position of which corresponds to the position of the first convex portion; when the swing arm is in the folded position, the first convex portion is at least partially located in the avoidance space.

7. The folding assembly according to claim 6, characterized in that: The base is provided with an avoidance space on each of its two sides, and a connecting portion is formed on the base between the two avoidance spaces; a avoidance groove is provided on one side of the main body close to the base, and when the swing arm is in the folded position, the connecting portion is at least partially located in the avoidance groove.

8. The folding assembly according to any one of claims 1 to 7, characterized in that: The first pushing portion has a first cam surface; when the swing arm rotates from the unfolded position toward the folded position, the first cam surface forms a cam fit with the first surface.

9. The folding assembly according to any one of claims 1 to 7, characterized in that: The second pushing portion has a second cam surface; when the swing arm rotates between the unfolded position and the folded position, the second cam surface forms a cam fit with the second surface.

10. The folding assembly according to any one of claims 1 to 7, characterized in that: When the swing arm is in the folded position, the first pushing portion is in contact with the first surface, and a gap is provided between the second pushing portion and the second surface.

11. The folding assembly according to claim 10, characterized in that: The first pushing portion has a first contact surface; when the swing arm is in the folded position, the first contact surface is in surface contact with the first surface.

12. The folding assembly according to any one of claims 1 to 7, characterized in that: When the swing arm is in the folded position, the support member is supported on the base.

13. The folding assembly according to any one of claims 1 to 7, characterized in that: When the swing arm is in the expanded position, the second pushing portion is in contact with the second surface, and a gap is provided between the first pushing portion and the first surface.

14. The folding assembly according to claim 13, characterized in that: The second pushing portion has a second contact surface; when the swing arm is in the expanded position, the second contact surface is in surface contact with the second surface.

15. The folding assembly according to any one of claims 1 to 7, characterized in that: The swing arm is provided with a first supporting portion, and the first supporting portion, the first pushing portion and the second pushing portion are sequentially arranged along the direction of the rotation axis of the swing arm; When the swing arm is in the expanded position, the first supporting portion is located on a side of the support member close to the base, and is used to support the support member.

16. The folding assembly according to claim 15, characterized in that: The first supporting portion has a third contact surface; when the swing arm is in the expanded position, the third contact surface is in surface contact with the support member.

17. The folding assembly according to claim 15, characterized in that: When the swing arm is in a position between the unfolded position and the folded position, the first support portion is out of contact with the support member.

18. The folding assembly according to claim 17, characterized in that: The first supporting portion has an inclined surface, which is located on one side of the portion of the first supporting portion used to support the supporting member; when the swing arm is in the expanded position, the inclined surface does not contact the supporting member and is tilted by the supporting member toward the base.

19. The folding assembly according to claim 15, characterized in that: Each of the two sides of the support member includes a third surface, and the third surface is used for contacting and cooperating with the first supporting portion; When the swing arm is in a position between the unfolded position and the folded position, the first supporting portion is located on a side of the third surface close to the base; Among them, along the thickness direction of the support member, the height of the first surface is less than or equal to the height of the second surface, and the height of the first surface is less than or equal to the height of the third surface; the thickness direction of the support member is parallel to the direction in which the support member moves toward or away from the base.

20. The folding assembly according to claim 19, characterized in that: Along the thickness direction of the support member, the height at which the third surface is located is less than or equal to the height at which the second surface is located.

21. The folding assembly according to claim 19, wherein: The support member comprises: the main body; and a third convex portion, wherein each of the two sides of the main body is provided with the third convex portion; Wherein, the side of the third protrusion close to the base includes the third surface.

22. The folding assembly according to claim 21, characterized in that: A third groove is provided on the swing arm. When the swing arm is in the folded position, the third protrusion at least partially extends into the third groove. The first supporting portion is provided on the inner wall and / or outer edge of the third groove.

23. The folding assembly according to any one of claims 1 to 7, characterized in that: The swing arm is provided with a second supporting portion, and the first pushing portion, the second pushing portion and the second supporting portion are sequentially arranged along the direction of the rotation axis of the swing arm; When the swing arm is in the expanded position, the second supporting portion is located on a side of the support member away from the base.

24. The folding assembly according to claim 23, characterized in that: When the swing arm is in a position between the unfolded position and the folded position, the second support portion is not in contact with the support member.

25. The folding assembly according to any one of claims 1 to 7, 11, 14, 16 to 22, and 24, characterized in that: The swing arm is provided with a first limiting portion, and the base is provided with a first limiting matching portion, the first limiting portion being used to abut against the first limiting matching portion when the swing arm rotates to the unfolded position to limit the swing arm from further rotation; and / or A second limiting portion is provided on the swing arm, and a second limiting matching portion is provided on the base. The second limiting portion is used to abut against the second limiting matching portion when the swing arm rotates to the folded position to limit the swing arm from continuing to rotate.

26. The folding assembly according to any one of claims 1 to 7, 11, 14, 16 to 22, and 24, characterized in that: The folding assembly also includes a door panel, which is arranged on the support member and located on a side of the support member away from the base, and the relative positions of the door panel and the support member are fixed; wherein, the door panel and the support member are formed separately.

27. The folding assembly according to any one of claims 1 to 7, 11, 14, 16 to 22, and 24, characterized in that: The folding assembly further includes a shaft cover, the base being disposed on the shaft cover and located between the support member and the shaft cover; An avoidance groove is provided on the swing arm; when the swing arm is in the expanded position, the avoidance groove is located on a side of the swing arm close to the shaft cover, and a side edge of the shaft cover extends into the avoidance groove.

28. A folding device, characterized in that: The folding device comprises: a first shell; a second housing; and The folding assembly according to any one of claims 1 to 27; Wherein, the first shell is connected to the swing arm on one side of the support member, and the second shell is connected to the swing arm on the other side of the support member.

29. A terminal device, characterized in that: The terminal device includes: The folding device according to claim 28; and A folding screen is provided on the first shell and the second shell, and the position of the foldable portion of the folding screen corresponds to the position of the support member of the folding assembly.

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