Rotating shaft mechanism and foldable equipment

Abstract

The invention provides a rotating shaft mechanism and foldable equipment, relates to the technical field of foldable equipment, and can reduce the width of a damping structure in the extending direction of a rotating shaft and improve the position selection flexibility of the damping structure in the rotating shaft mechanism. The rotating shaft mechanism comprises a rotating shaft base, a first connecting piece, a swing arm and a damping structure. The rotating shaft base is provided with a cam surface. The swing arm comprises a rotating part and a connecting part which are fixedly connected, the rotating part is rotatably connected to the rotating shaft base, and the connecting part is connected to the first connecting piece. The swing arm is provided with a mounting hole extending from the connecting part to the rotating part, the end, facing the rotating part, of the mounting hole is opened to form a first opening, and the first opening faces the cam face. The damping structure is contained in the mounting hole and can elastically stretch out and draw back in the extending direction of the mounting hole. When the swing arm rotates between the unfolding position and the folding position, the damping structure is matched with the cam surface to provide damping force.

Description

Technical Field

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

[0002] A hinge mechanism is provided in foldable devices such as foldable screen devices and laptop computers to support the folding of the entire device between an unfolded state and a folded state. A damping structure is usually also provided in the hinge mechanism to improve the folding feel and enable the device to hover in an unfolded state, a folded state, or a semi-folded state. In the prior art, the width of the damping structure in the direction of the hinge extension is usually large, and the required installation space is large, resulting in low flexibility in the selection of the position of the damping structure in the hinge mechanism. Summary of the invention

[0003] The present application provides a hinge mechanism and a foldable device, which can reduce the width of the damping structure in the extension direction of the hinge and improve the flexibility of position selection of the damping structure in the hinge mechanism.

[0004] To achieve the above objectives, the embodiments of the present application adopt the following technical solutions:

[0005] In a first aspect, a rotating shaft mechanism is provided, which includes a rotating shaft base, a first damping swing arm assembly rotatably connected to the rotating shaft base, and a first connecting member connected to the first damping swing arm assembly. The rotating shaft base is provided with a cam surface, and the first damping swing arm assembly cooperates with the cam surface to provide a damping force.

[0006] The first damping swing arm assembly includes a swing arm and a damping structure. The swing arm includes a rotating part and a connecting part that are fixedly connected, the rotating part is rotatably connected to the rotating shaft base, and the connecting part is connected to the first connecting member. The swing arm is provided with a mounting hole extending from the connecting part to the rotating part. One end of the mounting hole facing the rotating part is open to form a first opening, and the first opening faces the cam surface.

[0007] The damping structure is accommodated in the mounting hole and can be elastically retracted along the extending direction of the mounting hole. When the swing arm rotates between the unfolded position and the folded position, the damping structure cooperates with the cam surface to provide a damping force.

[0008] Since the swing arm is provided with a mounting hole for installing the damping structure, and the mounting hole extends from the connecting part to the rotating part, the size of the mounting hole along the length direction of the rotating shaft base can be designed to be smaller, which is beneficial to reducing the size of the first damping swing arm assembly along the length direction of the rotating shaft base, so that the installation space required for the first damping swing arm assembly is smaller and the flexibility of position selection is higher.

[0009] Optionally, the damping structure includes a contact piece and an elastic piece. The contact piece is located at the first opening. The elastic piece is located on the side of the contact piece that is opposite to the cam surface, and the elastic piece can be elastically retracted along the extension direction of the mounting hole. The damping structure cooperates with the cam surface with the help of the contact piece. The contact piece can be selected as a rigid piece. For example, the material of the contact piece can be selected from ferritic stainless steel, titanium alloy, carbon fiber composite material, fiberglass, alumina ceramic and silicon nitride ceramic, etc., which have high hardness and good wear resistance, so as to improve the wear resistance of the contact piece and extend its service life. At the same time, the damping structure generates elastic force with the help of the elastic piece. The elastic piece can be selected as a structural member with better elasticity. For example, the material of the elastic piece can be selected from spring steel to increase the damping force. Therefore, the damping structure provided in the embodiment of the present application can take into account both wear resistance and elasticity.

[0010] Optionally, at least the surface of the contact piece facing the cam surface is a convex spherical surface. For example, the contact piece is a spherical structure. In this way, the surface of the contact piece for contacting the cam surface is smooth, which can reduce wear and avoid jamming.

[0011] Optionally, the elastic member is a cylindrical coil spring. The axial direction of the cylindrical coil spring is consistent with the extension direction of the mounting hole. The cylindrical coil spring has a large elastic force and excellent structural stability, which can increase the damping force and extend the service life.

[0012] Optionally, the rotating shaft base may include a rotating fitting portion and a cam portion. The rotating fitting portion cooperates with the rotating portion to achieve a rotatable connection. The cam portion is arranged on one side of the rotating fitting portion and protrudes toward the front side of the rotating shaft base; when the swing arm is in the unfolded position, the cam portion is located between the rotating fitting portion and the mounting hole. The surface of the cam portion facing away from the rotating fitting portion is the first side surface, and the surface of the cam portion facing the front side of the rotating shaft base is the front end surface, and the cam portion also includes a transition surface connected between the first side surface and the front end surface. The first side surface, the transition surface and the front end surface are connected to form the above-mentioned cam surface.

[0013] Optionally, the rotation axis of the rotating matching portion and the rotating portion is the first axis. The distance from the transition surface to the first axis is greater than the distance from the first side surface to the first axis, and the distance from the transition surface to the first axis is also greater than the distance from the front end surface to the first axis. In this way, the change curve of the damping force can be in a single-peak shape that increases first and then decreases, so that the swing arm can hover in the unfolded position when no external force is applied.

[0014] Optionally, the first side surface includes a concave area, and for example, the concave area is a concave spherical area. When the swing arm is in the extended position, at least part of the contact piece is accommodated in the groove surrounded by the concave area. In this way, the swing arm can be stably suspended in the extended position.

[0015] Optionally, the mounting hole is provided in the connecting portion, and the swing arm further comprises a transition portion fixedly connected between the connecting portion and the rotating portion. The transition portion is provided with an avoidance hole penetrating the front end surface of the transition portion and the back surface of the transition portion. When the swing arm rotates between the unfolded position and the folded position, the cam portion extends into the avoidance hole or is pulled out of the avoidance hole, and the first opening is located on the inner wall surface of the avoidance hole. In this way, the thickness of the transition portion and the cam portion can be avoided from overlapping, which is conducive to reducing the thickness of the rotating shaft mechanism.

[0016] Optionally, the swing arm further includes a stopper portion disposed on the inner wall surface of the avoidance hole. The stopper portion has a stopper surface extending along the circumference of the first opening and connected to the inner wall surface of the mounting hole, and the vertical distance from the stopper surface to the central axis of the mounting hole gradually decreases from the mounting hole to the cam surface. In this way, the stopper surface is in a constricted shape, which can prevent the contact member from falling off.

[0017] Optionally, the rotation axis of the rotating matching portion and the rotating portion is the first axis. The stopper is arranged on one side of the first opening away from the front end surface of the transition portion and on two opposite sides of the first opening arranged along the first axis, and one end of the stopper facing the front end surface of the transition portion is open to form a second avoidance gap. In this way, while preventing the contact member from falling off, the stopper can be prevented from interfering with the contact member contacting the cam surface, which can improve the compactness of the structure.

[0018] Optionally, the rotating matching portion is an arc-shaped slot arranged in the rotating shaft base. The rotating portion is accommodated in the arc-shaped slot and can slide along the arc-shaped slot. The rotating shaft base is also provided with a first avoidance notch, which is connected to the arc-shaped slot. When the swing arm is in the unfolded position, the transition portion is accommodated in the first avoidance notch, and the cam portion is arranged in the first avoidance notch. In this way, the compactness of the structure can be improved and the length of the swing arm can be reduced.

[0019] Optionally, the surface of the cam portion facing the arc-shaped slot is a concave arc surface, which forms part of the inner wall surface of the arc-shaped slot. In this way, the sliding matching area between the rotating portion and the rotating matching portion can be increased, stress concentration can be avoided, and jamming can be prevented.

[0020] Optionally, one end of the mounting hole away from the rotating part is opened to form a second opening. The damping structure further includes a blocking member, which is disposed at the second opening, and the elastic member is located between the blocking member and the contact member. In this way, the contact member and the elastic member can be successively installed in the mounting hole from the second opening, and then the blocking member can be installed at the second opening. This assembly operation is simple and easy to implement.

[0021] Optionally, at least part of the inner wall surface of the mounting hole is provided with an internal thread. The plugging member is a screw, and the screw includes a head and a rod, the head is arranged on the side of the connecting part away from the rotating part, and at least part of the rod is located in the mounting hole and is screwed with the internal thread. In this way, the plugging member is arranged in the second opening by means of a threaded connection, and the elastic force of the elastic member can be adjusted by adjusting the screw fitting length between the plugging member and the internal thread, and after the contact member is worn, the size of the elastic force can also be ensured by adjusting the screw fitting length between the plugging member and the internal thread.

[0022] Optionally, the pivot mechanism further includes a mounting member, and the mounting member includes a fixing portion and a mounting portion fixed to the fixing portion. The fixing portion is clamped between the head portion and the connecting portion, and the fixing portion is provided with a fixing hole, and the rod portion is inserted into the fixing hole. The mounting portion is provided on the front side of the swing arm, and the mounting portion is used to install a decorative member. In this way, in addition to being used to achieve the blocking of the second opening, the blocking member is also used to fix the mounting member to the swing arm, thereby eliminating the need to provide an opening or slot structure on the swing arm for fixing the mounting member, thereby ensuring the structural integrity of the swing arm, and reducing the volume of the swing arm while ensuring the structural strength of the swing arm, which is beneficial to reducing the size of the first damping swing arm assembly. At the same time, the mounting member and the swing arm are detachably connected by means of the blocking member, which can reduce maintenance costs.

[0023] Optionally, the connecting portion includes a main body and a sliding portion arranged on the main body, and the mounting hole is arranged on the main body. The first connecting member is provided with a slide rail, and the sliding portion is slidably connected to the slide rail. When the swing arm rotates between the unfolded position and the folded position, the sliding portion can slide along the slide rail. This structure is simple, has better movement stability, and can avoid the bending area of ​​the folding screen to prevent damage to the folding screen.

[0024] Optionally, the sliding part includes a first sliding part and a second sliding part located on opposite sides of the main body. The first connecting member is provided with a mounting groove recessed from the front end of the first connecting member to the back side of the first connecting member, and the slide rail includes a first slide groove and a second slide groove arranged on two opposite side walls of the mounting groove. The main body can be slidably accommodated in the mounting groove, the first sliding part can be slidably accommodated in the first slide groove, and the second sliding part can be slidably accommodated in the second slide groove. This structure is simple, and the connecting part is sunken in the first connecting member, which can achieve the purpose of reducing thickness.

[0025] Optionally, a convex rib is provided on the back of the main body, and the extension direction of the convex rib is consistent with the extension direction of the mounting hole, and the orthographic projection of the mounting hole on the front end surface of the main body overlaps with the orthographic projection of the convex rib on the front end surface of the main body. An avoidance groove is provided on the bottom surface of the mounting groove, and the extension direction of the avoidance groove is consistent with the extension direction of the convex rib, and the convex rib can be slidably accommodated in the avoidance groove. In this way, the convex rib can ensure the structural strength of the portion of the main body where the mounting hole is provided, so as to help reduce the volume of the main body. At the same time, by using the avoidance groove to avoid the convex rib, the compactness of the structure can be ensured, and the size of the assembly structure of the swing arm and the first connecting member can be reduced.

[0026] Optionally, the shaft mechanism further includes a first compensation device and a second compensation device. The first compensation device and the second compensation device are arranged along the length direction of the shaft base, and the swing arm is located between the first compensation device and the second compensation device.

[0027] In a second aspect, a foldable device is provided, which includes a first structural member, a second structural member and a rotating shaft mechanism as described in any of the above technical solutions, wherein the first structural member is connected to the first connecting member, and the second structural member is connected to the rotating shaft base.

[0028] Since the foldable device provided in the present application includes the hinge mechanism as described in any of the above technical solutions, the two can solve the same technical problems and achieve the same effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 A bottom view of a foldable device in an unfolded state provided in some embodiments of the present application;

[0030] Figure 2 for Figure 1 A top view of the foldable device shown in an unfolded state;

[0031] Figure 3 for Figure 1 A front view of the foldable device shown in an unfolded state;

[0032] Figure 4 for Figure 3 Schematic diagram of three positions of the foldable device during the flipping process from the unfolded state to the folded state;

[0033] Figure 5 for Figure 2 Schematic diagram of three positions of the foldable device during the flipping process from the folded state to the unfolded state;

[0034] Figure 6 A schematic diagram of a foldable device provided in some embodiments of the present application;

[0035] Figure 7 for Figure 6Schematic diagram of three positions of the foldable device during the flipping process from the unfolded state to the folded state;

[0036] Figure 8 for Figure 1 and Figure 2 A perspective view of a support device within the foldable device shown;

[0037] Fig. 9 for Figure 8 A three-dimensional view of the rotating shaft mechanism in the support device and a partial enlarged view of area I in the rotating shaft mechanism;

[0038] Fig.10 for Fig. 9 A schematic diagram of the exploded structure of the rotating shaft mechanism in area I;

[0039] Fig.11 for Fig.10 a perspective view of the exploded structure shown in FIG. 1 from a bottom-up perspective;

[0040] Fig.12 for Fig. 9 A schematic diagram of the structure of the assembly structure of the rotating shaft mechanism, the first structural member, the second structural member and the folding screen during the process of flipping from the unfolded state to the folded state;

[0041] Fig.13 for Fig.12 The curve diagram of the damping force F1 in the assembly structure shown changes with the angle θ;

[0042] Fig.14 A top view of a rotating shaft mechanism provided for related technology;

[0043] Fig.15 for Figure 9-11 A schematic diagram of the exploded structure of the first damping swing arm assembly in the rotating shaft mechanism shown;

[0044] Fig.16 for Fig.15 The schematic diagram of the exploded structure of the first damping swing arm assembly shown in the upward perspective;

[0045] Fig.17 for Fig. 9 A schematic diagram of the cross-sectional structure of the rotating shaft mechanism at the CC line;

[0046] Fig.18 for Fig.17 A schematic diagram of the structure of the rotating shaft mechanism shown in the folded state;

[0047] Fig.19 for Fig.17 The structural schematic diagram of the rotating shaft mechanism shown is in a semi-folded state;

[0048] Fig. 20 for Fig.15 and Fig.16 A three-dimensional view of the second base in the rotating shaft mechanism;

[0049] Fig.21 for Fig. 20 A three-dimensional view of the second base as viewed from direction D1;

[0050] Fig. 22 for Fig.15 and Fig.16 A three-dimensional view of a swing arm in the rotating shaft mechanism shown in one viewing angle;

[0051] Fig.23 for Fig. 22 A perspective view of the swing arm shown in another perspective;

[0052] Fig.24 for Fig. 22 a perspective cutaway view of the swing arm shown;

[0053] Fig.25 for Fig. 9 A schematic diagram of the three-dimensional structure of the first compensation device in the rotating shaft mechanism as viewed from the front side;

[0054] Fig.26 for Fig.25 A schematic diagram of the exploded structure of the first compensation device as seen from the front side;

[0055] Fig. 27 for Fig. 9 A schematic diagram of the three-dimensional structure of the first compensation device in the rotating shaft mechanism as viewed from the back side;

[0056] Fig.28 for Fig. 27 A schematic diagram of the exploded structure of the first compensation device as seen from the back side;

[0057] Fig.29 for Fig.25 A schematic cross-sectional structural diagram of the first compensation device when it is in a folded state;

[0058] Fig.30 for Fig.25 A schematic cross-sectional structural diagram of the first compensation device when it is in an expanded state;

[0059] Fig.31 for Fig.25 The schematic diagram of the principle of the first compensation device compensating the length difference is shown;

[0060] Fig.32 for Fig.25 A three-dimensional view of the first compensation device at another viewing angle;

[0061] Fig.33 for Fig.26A schematic diagram of the exploded structure of the first compensation device shown in another viewing angle;

[0062] Fig.34 for Fig.25 A front view of a partial structure of the first compensation device shown;

[0063] Fig.35 for Fig.25 An assembly diagram of the damping assembly in the first compensation device shown;

[0064] Fig.36 for Fig.35 A schematic diagram of the exploded structure of the damping assembly shown;

[0065] Fig.37 for Fig.36 An exploded structural diagram of a portion of the structure of the damping assembly shown;

[0066] Fig.38 for Fig.36 Schematic diagram of the back structure of the slider in the damping assembly shown. DETAILED DESCRIPTION

[0067] In the embodiments of the present application, the terms "first", "second", "third", and "fourth" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second", "third", and "fourth" may explicitly or implicitly include one or more of the features.

[0068] In the embodiments of the present application, the terms "include", "comprises" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0069] In the embodiments of the present application, "connection" can be understood as fixed connection or movable connection. Among them, fixed connection includes but is not limited to welding, riveting, threaded connection, clamping, bonding or integral molding, and movable connection includes but is not limited to rotatable connection and slidable connection.

[0070] In the embodiments of the present application, unless otherwise specified, the description of two directions being "consistent" means that the two directions are allowed to be roughly consistent within a certain error range, and the error range can be a range where the deviation angle is less than 5° relative to absolute consistency.

[0071] The present application provides a foldable device, which includes but is not limited to foldable devices such as foldable screen devices, laptop computers, mobile phone stands, etc.

[0072] Folding screen devices include but are not limited to user equipment (UE) or terminal devices, for example, folding screen devices can be tablet computers (portable android devices, PAD), personal digital assistants (personal digital assistants, PDA), handheld devices with wireless communication functions, computing devices, vehicle-mounted devices and other mobile terminals or fixed terminals. This application is exemplified by taking the folding screen device as a handheld device with wireless communication functions, and the handheld device can be, for example, a mobile phone.

[0073] Folding screen devices include but are not limited to outward-folding folding screen devices and inward-folding folding screen devices.

[0074] See also Figure 1-Figure 3 , Figure 1 A bottom view of a foldable device 100 in an unfolded state provided in some embodiments of the present application, Figure 2 for Figure 1 A top view of the foldable device 100 in the unfolded state is shown. Figure 3 for Figure 1 The front view of the foldable device 100 in the unfolded state is shown. In this embodiment, the foldable screen device 100 is an outward-folding foldable screen device.

[0075] The foldable device 100 includes a supporting device 10 , a shaft cover 20 , a decorative member 30 , a decorative member 40 , and a folding screen 50 .

[0076] The supporting device 10 includes a first structural member (also known as a first shell) 101, a second structural member (also known as a second shell) 102, and a rotating shaft mechanism 103 connected between the first structural member 101 and the second structural member 102. The rotating shaft mechanism 103 is used to realize the relative rotation between the second structural member 102 and the first structural member 101, so as to support the foldable device 100 to switch between the unfolded state and the folded state.

[0077] The supporting device 10 has a front side and a back side opposite to each other. When the foldable device 100 is turned from the unfolded state to the folded state, Figure 4 , Figure 4 for Figure 3 The foldable device 100 is shown as a schematic diagram of three positions during the process of flipping from the unfolded state to the folded state. The foldable device 100 flips from the unfolded state to the semi-folded state and the folded state in sequence. Figure 4(a) is a schematic diagram of the structure of the foldable device 100 in an unfolded state. In this state, the angle between the first structural member 101 and the second structural member 102 is approximately 180°; Figure 4 (b) is a schematic structural diagram of the foldable device 100 in a semi-folded state, and the angle θ between the first structural member 101 and the second structural member 102 is greater than 0° and less than 180°; Figure 4 (c) is a schematic diagram of the structure of the foldable device 100 in a folded state, and the angle θ between the first structural member 101 and the second structural member 102 is approximately 0°. During this process, the first structural member 101 and the second structural member 102 rotate toward the front side of the support device 10 along directions a1 and a2, respectively, and the space in front of the support device 10 gradually decreases, while the space in the back of the support device 10 gradually increases.

[0078] On the contrary, when the foldable device 100 is turned from the folded state to the unfolded state, please refer to Figure 5 , Figure 5 for Figure 2 The foldable device 100 is shown as a schematic diagram of three positions during the process of flipping from a folded state to an unfolded state. The foldable device 100 is flipped from the folded state to a semi-folded state and an unfolded state in sequence. Figure 5 (a) is a schematic diagram of the structure of the foldable device 100 when it is in a folded state. In this state, the angle between the first structural member 101 and the second structural member 102 is approximately 0°; Figure 5 (b) is a schematic structural diagram of the foldable device 100 in a semi-folded state, and the angle θ between the first structural member 101 and the second structural member 102 is greater than 0° and less than 180°; Figure 5 (c) is a schematic diagram of the structure of the foldable device 100 when it is in the unfolded state, and the angle θ between the first structural member 101 and the second structural member 102 is approximately 180°. In this process, the first structural member 101 and the second structural member 102 rotate toward the back side of the support device 10 along directions a3 and a4, respectively, and the front space of the support device 10 gradually increases, and the back space of the support device 10 gradually decreases. Wherein, direction a3 is the opposite direction of the above-mentioned direction a1, and direction a4 is the opposite direction of the above-mentioned direction a2.

[0079] exist Figure 4 and Figure 5 In the illustrated embodiment, the shaft cover 20, the decorative member 30 and the decorative member 40 are located at the front side of the support device 10. The shaft cover 20 covers the rotating shaft mechanism 103, the decorative member 30 covers the gap between the shaft cover 20 and the first structural member 101, and the decorative member 40 covers the gap between the shaft cover 20 and the second structural member 102.

[0080] The folding screen 50 is located on the back side of the supporting device 10 and is supported on the first structural member 101, the second structural member 102 and the rotating shaft mechanism 103. The folding screen 50 can be an organic light-emitting diode (OLED) screen, a micro organic light-emitting diode (micro organic light-emitting diode) screen, a quantum dot light emitting diode (QLED) screen, a liquid crystal display (LCD), etc. The surface of the folding screen 50 facing away from the supporting device 10 is a display surface for displaying image information. When the foldable device 100 is in the unfolded state and the folded state, please refer to Figure 4 and Figure 5 The display surface of the folding screen 50 is exposed to present images, videos and other information to the user.

[0081] In other embodiments, when the foldable device is an inward-folding folding screen device, please refer to Figure 6 , Figure 6 This is a structural schematic diagram of a foldable device 100 provided in some other embodiments of the present application, wherein the folding screen 50 is located on the front side of the supporting device 10 , and the shaft cover 20 , the decorative member 30 , and the decorative member 40 are located on the back side of the supporting device 10 .

[0082] See also Figure 7 , Figure 7 for Figure 6 The foldable device 100 is shown as a schematic diagram of three positions during the process of flipping from the unfolded state to the folded state. The foldable device 100 flips from the unfolded state to the semi-folded state and the folded state in sequence. Figure 7 (a) is a structural diagram of the foldable device 100 when it is in the unfolded state. In this state, the angle θ between the first structural member 101 and the second structural member 102 is approximately 180°, and the display surface of the folding screen 50 is exposed to facilitate the presentation of images, videos and other information to the user. Figure 7 (b) is a schematic diagram of the structure of the foldable device 100 when it is in a semi-folded state. In this state, the angle θ between the first structural member 101 and the second structural member 102 is greater than 0° and less than 180°. Figure 7 (c) is a structural diagram of the foldable device 100 when it is in a folded state. In this state, the angle θ between the first structural member 101 and the second structural member 102 is approximately 0°, and the folding screen 50 is hidden in the supporting device 10. The supporting device 10 can protect the folding screen 50 from scratches.

[0083] The following embodiments are exemplified by taking the foldable device 100 as an outward-folding folding screen device.

[0084] See also Figure 8 , Figure 8 for Figure 1 and Figure 2 A perspective view of the support device 10 within the foldable device 100 is shown.

[0085] It should be noted that, for the convenience of description, in the following embodiments, unless otherwise specified, the front side used to describe each component in the rotating shaft mechanism 103 refers to the side of the described component facing the front side of the above-mentioned supporting device 10, the "front end face" refers to the surface of the described component facing the front side of the above-mentioned supporting device 10, the "back side" refers to the side of the described component facing the back side of the above-mentioned supporting device 10, and the "back side" refers to the surface of the described component facing the back side of the above-mentioned supporting device 10.

[0086] See also Figure 9-11 , Fig. 9 for Figure 8 The three-dimensional diagram of the rotating shaft mechanism 103 in the supporting device 10 and the partial enlarged diagram of the area I in the rotating shaft mechanism 103 are shown. Fig.10 for Fig. 9 The exploded structural diagram of the rotating shaft mechanism 103 in the area I is shown in FIG. Fig.11 for Fig.10 The rotating shaft mechanism 103 may include a rotating shaft base 1 , a first damping swing arm assembly 2 , a first connecting member 3 , a second damping swing arm assembly 4 and a second connecting member 5 .

[0087] The shaft base 1 can also be called a center beam, which is used to provide a position reference in the shaft mechanism 103. The shaft base 1 can be a whole structure or assembled from multiple parts. The shaft base 1 is in the shape of a long strip. Based on this, an XYZ coordinate system is established for the convenience of description. For example, please refer to Fig. 9 , the width direction of the rotating shaft base 1 is defined as the X-axis direction, the length direction is defined as the Y-axis direction, and the thickness direction is defined as the Z-axis direction. It is understandable that the coordinate system of the rotating shaft base 1 can be flexibly set according to actual needs, and no specific limitation is made here.

[0088] In some embodiments, see Fig.10 and Fig.11 The shaft base 1 may include a first base 11 and a second base 12. The first base 11 is located in front of the second base 12, and the first base 11 and the second base 12 may be fixedly connected by at least one screw 13.

[0089] In other embodiments, the first base 11 and the second base 12 may also be fixedly connected by welding, clamping, etc., and this application does not make any specific limitation on this.

[0090] In this way, the shaft base 1 is formed by assembling at least the first base 11 and the second base 12 , which facilitates the assembly of other structural parts (such as the first damping swing arm assembly 2 and the second damping swing arm assembly 4 ) on the shaft base 1 .

[0091] One end of the first damping swing arm assembly 2 and one end of the second damping swing arm assembly 4 are rotatably connected to the rotating shaft base 1. Fig. 9 The first damping swing arm assembly 2 and the second damping swing arm assembly 4 are staggered along the Y-axis direction, which can reduce the width of the hinge base 1 in the X-axis direction, which is beneficial to the thickness reduction of the foldable device when it is in the folded state.

[0092] The other end of the first damping swing arm assembly 2 is connected to the first connecting member 3. Optionally, the other end of the first damping swing arm assembly 2 can be slidably connected to the first connecting member 3, or can be rotatably or fixedly connected to the first connecting member 3. The following embodiments are further introduced on the basis that the other end of the first damping swing arm assembly 2 is slidably connected to the first connecting member 3.

[0093] The first connecting member 3 is connected to the first structural member 101 . Optionally, the first connecting member 3 can be fixedly connected to the first structural member 101 by means of at least one screw 6 .

[0094] The other end of the second damping swing arm assembly 4 is connected to the second connecting member 5. Optionally, the other end of the second damping swing arm assembly 4 can be slidably connected to the second connecting member 5, or can be rotatably or fixedly connected to the second connecting member 5. The following embodiments are further introduced on the basis that the other end of the second damping swing arm assembly 4 is slidably connected to the second connecting member 5.

[0095] The second connecting member 5 is connected to the second structural member 102 . Optionally, the second connecting member 5 can be fixedly connected to the second structural member 102 by means of at least one screw 7 .

[0096] When the foldable device 100 flips between the unfolded state and the folded state, the first damping swing arm assembly 2 and the second damping swing arm assembly 4 can rotate relative to the shaft base 1, and the first damping swing arm assembly 2 and the second damping swing arm assembly 4 can slide relative to the first connecting member 3 and the second connecting member 5, respectively, to adjust the distance between the shaft base 1 and the first structural member 101 and between the shaft base 1 and the second structural member 102, thereby stably supporting the folding screen 50 while avoiding damage to the folding screen 50. Moreover, the first damping swing arm assembly 2 and the second damping swing arm assembly 4 can also cooperate with the shaft base 1 to generate a damping force, so that the foldable device 100 can hover in at least one of the folded state, the semi-folded state and the unfolded state.

[0097] For examples, see Fig.12 , Fig.12 for Fig. 9 The structure diagram of the assembly structure of the rotating shaft mechanism 103, the first structural member 101, the second structural member 102 and the folding screen 50 during the process of flipping from the unfolded state to the folded state is shown in FIG. Fig.12 (a) is a schematic diagram of the structure when the assembly structure is in an unfolded state. In this state, the angle θ between the first structural member 101 and the second structural member 102 is approximately 180°; Fig.12 (b) is a schematic diagram of the structure when the assembly structure is in a semi-folded state. In this state, the angle θ between the first structural member 101 and the second structural member 102 is greater than 0° and less than 180°; Fig.12 (c) is a schematic diagram of the structure when the assembly structure is in a folded state. In this state, the angle θ between the first structural member 101 and the second structural member 102 is approximately 0°.

[0098] When the assembly structure is turned over from the unfolded state to the folded state, the first structural member 101 and the second structural member 102 rotate toward the front side of the support device along the direction a1 and the direction a2 respectively, and the first connecting member 3, the second connecting member 5, the first damping swing arm assembly 2 and the second damping swing arm assembly 4 also rotate toward the front side of the support device. At the same time, the first connecting member 3 and the second connecting member 5 slide relative to the first damping swing arm assembly 2 and the second damping swing arm assembly 4 along the direction a5 and the direction a6 respectively. Thus, the distance between the rotating shaft base 1 and the first structural member 101, and between the rotating shaft base 1 and the second structural member 102 is shortened to avoid the bending area of ​​the folding screen 50 and prevent the folding screen 50 from being damaged.

[0099] Furthermore, the damping force generated by the first damping swing arm assembly 2 and the rotating shaft base 1 is defined as F1, and the damping force generated by the second damping swing arm assembly 4 and the rotating shaft base 1 is defined as F2. Fig.13 , Fig.13 for Fig.12 The curve diagram of the damping force F1 in the assembly structure shown in FIG. 1 shows the change of the angle θ. In the process of the foldable device 100 flipping from the unfolded state to the folded state, the angle θ gradually decreases from 180° to 0°, and the change curve of the damping force F1 is a single-peak shape that increases first and then decreases. In this process, the change curve of F2 is also a single-peak change shape that increases first and then decreases, which is not shown in the figure. As a result, the foldable device 100 can hover in the unfolded state when there is no external force, and the switch from the unfolded state to the folded state requires the help of external force.

[0100] Of course, the F1 curve is not limited to Fig.13 The unimodal configuration shown may also be a multimodal configuration, so that the foldable device 100 can hover in at least one semi-folded state in addition to the unfolded state.

[0101] Contrary to the above process, when the foldable device 100 is flipped from the folded state to the unfolded state, the first structural member 101 and the second structural member 102 rotate toward the back side of the support device in the opposite direction of direction a1 and the opposite direction of direction a2, respectively, and the first connecting member 3, the second connecting member 5, the first damping swing arm assembly 2 and the second damping swing arm assembly 4 also rotate toward the back side of the support device. At the same time, the first connecting member 3 and the second connecting member 5 slide relative to the first damping swing arm assembly 2 and the second damping swing arm assembly 4 in the opposite direction of the above-mentioned direction a5 and the opposite direction of direction a6. As a result, the distance between the rotating shaft base 1 and the first structural member 101, and between the rotating shaft base 1 and the second structural member 102 is extended to support the folding screen 50 and ensure the flatness of the folding screen 50.

[0102] It should be noted that when the foldable device 100 is an inward-folding folding screen device, when the foldable device 100 is flipped from the unfolded state to the folded state, the first connecting member 3 and the second connecting member 5 can slide in the opposite direction of the above-mentioned direction a5 and the opposite direction of the direction a6, respectively, to extend the distance between the rotating shaft base 1 and the first structural member 101, and between the rotating shaft base 1 and the second structural member 102, thereby avoiding the folding screen 50 and preventing the folding screen 50 from being damaged. When the foldable device 100 is flipped from the folded state to the unfolded state, the first connecting member 3 and the second connecting member 5 can slide in the above-mentioned direction a5 and direction a6, respectively, to shorten the distance between the rotating shaft base 1 and the first structural member 101, and between the rotating shaft base 1 and the second structural member 102, thereby supporting the folding screen 50 and ensuring the flatness of the folding screen 50. The sliding process is opposite to that of the outward-folding folding screen device.

[0103] In the related art, the width of the damping swing arm assembly along the Y-axis direction is usually large. For example, see Fig.14 , Fig.14 A top view of a rotating shaft mechanism provided in the related art, the first damping swing arm assembly 2 includes a housing structure formed by assembling an upper housing and a lower housing 2A and a serpentine elastic structure 2B disposed in the housing structure, the first damping swing arm assembly 2 requires a large installation space, resulting in low flexibility in the position selection of the damping swing arm assembly along the Y-axis direction in the rotating shaft mechanism 103. At the same time, the thickness of the damping swing arm assembly along the Z-axis direction is also usually large, making the rotating shaft mechanism 103 and even the entire machine thick along the Z-axis direction, which is not conducive to thinning.

[0104] Based on this, Figure 9-11 The first damping swing arm assembly 2 and the second damping 4 in the rotating shaft mechanism 103 shown can solve the above technical problems.

[0105] The following focuses on the structure of the first damping swing arm assembly 2, and the structure of the second damping swing arm assembly 4 can be the same as the first damping swing arm assembly 2, which is not described in detail in this application. Moreover, in some other embodiments, the rotating shaft mechanism 103 can also be provided with no second damping swing arm assembly 4 and second connecting member 5, and the second structural member 102 can be directly connected to the rotating shaft base 1, or the second structural member 102 can be connected to the rotating shaft base 1 by means of other intermediate structures, which is not specifically limited in this application.

[0106] See also Fig.15 and Fig.16 , Fig.15 for Figure 9-11 The schematic diagram of the exploded structure of the first damping swing arm assembly 2 in the rotating shaft mechanism 103 is shown. Fig.16 for Fig.15 The schematic diagram of the exploded structure of the first damping swing arm assembly 2 is shown in a bottom-up perspective.

[0107] The first damping swing arm assembly 2 may include a swing arm 21 , a damping structure 22 and a mounting portion 23 .

[0108] The swing arm 21 includes a rotating portion 211 and a connecting portion 212 which are fixedly connected.

[0109] The rotating portion 211 is rotatably connected to the rotating shaft base 1 to realize the rotatable connection between the first damping swing arm assembly 2 and the rotating shaft base 1. Fig.15 and Fig.16 The rotating shaft base 1 includes a rotating matching portion A, and the rotating matching portion A cooperates with the rotating portion 211 to achieve a rotatable connection.

[0110] In some embodiments, see Fig.15 and Fig.16 The back surface of the first base 11 includes a convex area A1, and the front surface of the second base 12 includes a concave area A2. At least a portion of the convex area A1 and at least a portion of the concave area A2 are arranged opposite to each other and spaced apart, and the at least portion of the convex area A1 and the at least portion of the concave area A2 define an arc-shaped slide groove, which forms the above-mentioned rotational matching portion A.

[0111] The rotating part 211 is accommodated in the arc-shaped slot and can slide along the arc-shaped slot to realize the rotatable connection between the rotating part 211 and the shaft base 1. Since the rotating matching part A is an arc-shaped slot structure instead of a full circle, the thickness of the shaft base 1 and even the whole machine can be reduced.

[0112] In the above embodiments, the rotating portion 211 may be in the shape of a drum, a roller, a needle, a block, a ball, etc. In some embodiments, please continue to refer to Fig.15 and Fig.16The rotating part 211 is in the shape of an arc sheet and includes a concave arc surface m1 and a convex arc surface m2. The rotating part 211 is accommodated in the arc-shaped slide groove, and the concave arc surface m1 faces the convex surface area A1, and the convex arc surface m2 faces the concave surface area A2.

[0113] In this way, when the rotating part 211 slides along the arc-shaped groove, the concave arc surface m1 and the convex arc area A1 slide relative to each other, and the convex arc surface m2 and the concave arc area A2 slide relative to each other, which can avoid stress concentration, ensure smooth sliding, and prevent jamming.

[0114] Of course, in other embodiments, the rotating portion 211 may also be a shaft sleeve, and the rotating matching portion A may be a rotating shaft; or, the rotating portion 211 may be a rotating shaft, and the rotating matching portion A may be a shaft sleeve. The rotating shaft may be rotatably sleeved in the shaft sleeve. This may also realize a rotatable connection between the rotating portion 211 and the rotating matching portion A.

[0115] In some embodiments, see Fig.15 and Fig.16 The swing arm 21 also includes a transition portion 213 fixedly connected between the rotating portion 211 and the connecting portion 212 .

[0116] The shaft base 1 is provided with a first avoidance notch 15, and the first avoidance notch 15 is connected to the arc-shaped slide groove. When the swing arm 21 is in the unfolded position, the transition portion 213 is accommodated in the first avoidance notch 15. This structure is simple and the layout is reasonable.

[0117] In some embodiments, please refer to Fig.16 The swing arm 21 is provided with a first stop portion 213 a. Optionally, the first stop portion 213 a is provided at the transition portion 213 .

[0118] The shaft base 1 is provided with a second stop portion 16 . Optionally, the second stop portion 16 is provided on the second base 12 .

[0119] When the swing arm 21 is in the extended position, refer to Fig.17 , Fig.17 for Fig. 9 The cross-sectional structure diagram of the rotating shaft mechanism 103 at the CC line is shown. The first stop portion 213a contacts the second stop portion 16 to prevent the swing arm 21 from continuing to rotate toward the back side of the rotating shaft base 1 relative to the rotating shaft base 1, thereby realizing the flattening stop function. This structure is simple and easy to implement.

[0120] In some embodiments, please refer back to Fig.15 and Fig.16 A third stop portion 211 a is provided at the end of the rotating portion 211 away from the connecting portion 212 .

[0121] The second base 12 is provided with an escape groove 12 a which is recessed from the concave area A2 toward the back surface of the second base 12 , and the inner side surface of the escape groove 12 a facing the connecting portion 212 forms a fourth stop portion 12 b .

[0122] When the swing arm 21 rotates from the unfolded position to the folded position, the third stop portion 211a slides in the avoidance groove 12a. Fig.18 , Fig.18 for Fig.17 The structural diagram of the rotating shaft mechanism 103 in the folded state is shown, and the third stop portion 211a cooperates with the fourth stop portion 12b to prevent the swing arm 21 from continuing to rotate toward the front side of the rotating shaft base 1 relative to the rotating shaft base 1, thereby realizing the folding stop function. This structure is simple and easy to implement.

[0123] In some embodiments, please refer to Fig.15 and Fig.16 The second base 12 is further provided with a first protrusion 17 and a second protrusion 18 protruding toward the front side of the shaft base 1. When the swing arm 21 is in the unfolded position, the first protrusion 17 and the second protrusion 18 are located between the first base 11 and the connecting portion 212. The first protrusion 17 and the second protrusion 18 are arranged at intervals along the Y-axis direction, and the first avoidance notch 15 is provided between the first protrusion 17 and the second protrusion 18.

[0124] Based on this, please refer to Fig.15 At least part of the concave area A2 is arranged on the first protrusion 17 and the second protrusion 18, thereby increasing the overlap between the swing arm 21 and the shaft base 1 when the swing arm 21 is in the folded position, ensuring sliding stability, avoiding stress concentration, and preventing jamming.

[0125] Please continue reading Fig.15 and Fig.16 , the connecting portion 212 is connected to the first connecting member 3, and optionally, the connecting portion 212 can be slidably connected to the first connecting member 3 to achieve a slidable connection between the first damping swing arm assembly 2 and the first connecting member 3. In other embodiments, the connecting portion 212 can also be rotatably or fixedly connected to the first connecting member 3 to achieve a rotatable or fixed connection between the first damping swing arm assembly 2 and the first connecting member 3. The following embodiments are further described on the basis that the connecting portion 212 is slidably connected to the first connecting member 3.

[0126] In some embodiments, see Fig.15 and Fig.16The connecting part 212 includes a main body 212a and a sliding part 212b disposed on the main body 212a. The first connecting member 3 is provided with a slide rail 31, and the slide rail 31 includes but is not limited to a slide groove type slide rail and a riding type slide rail. The sliding part 212b can be slidably connected to the slide rail 31. When the swing arm 21 rotates between the unfolded position and the folded position relative to the rotating shaft base 1, the sliding part 212b slides along the slide rail 31. This structure is simple and has excellent movement stability.

[0127] On the basis of the above, optionally, the sliding portion 212b includes a first sliding portion 212b1 and a second sliding portion 212b2 located on opposite sides of the main body 212a.

[0128] The first connecting member 3 is provided with a mounting groove 32 which is recessed from the front end of the first connecting member 3 to the back side of the first connecting member 3. The slide rail 31 includes a first slide groove 311 and a second slide groove 312 which are provided on two opposite side walls of the mounting groove 32.

[0129] The main body 212 a can be slidably accommodated in the mounting groove 32 , the first sliding portion 212 b 1 can be slidably accommodated in the first sliding groove 311 , and the second sliding portion 212 b 2 can be slidably accommodated in the second sliding groove 312 .

[0130] This structure is simple, and the connecting portion 212 is sunken in the first connecting member 3, which can achieve the purpose of reducing the thickness.

[0131] Please refer to Fig.15 and Fig.17 The shaft base 1 is provided with a cam surface B. The damping structure 22 is disposed in the swing arm 21 and cooperates with the cam surface B to generate the above-mentioned damping force F1.

[0132] The swing arm 21 is provided with a mounting hole 214 extending from the connecting portion 212 to the rotating portion 211, and the mounting hole 214 is used to install the damping structure 22. In some embodiments, the mounting hole 214 can be provided on the connecting portion 212, and optionally, the mounting hole 214 can be provided on the main body 212a of the connecting portion 212.

[0133] Of course, in other embodiments, the mounting hole 214 may also be provided on the sliding portion 212 b of the connecting portion 212 , or provided at other positions of the swing arm 21 , and the present application does not make any specific limitation on this.

[0134] See also Fig.17 One end of the mounting hole 214 facing the rotating portion 211 is opened to form a first opening C1 , and the first opening C1 faces the cam surface B.

[0135] The damping structure 22 is accommodated in the mounting hole 214 and can be elastically retracted along the extending direction of the mounting hole 214. When the swing arm 21 rotates between the unfolded position and the folded position, the damping structure 22 cooperates with the cam surface B to provide the damping force F1.

[0136] Since the swing arm 21 is provided with a mounting hole 214 for mounting the damping structure 22, and the mounting hole 214 extends from the connecting portion 212 to the rotating portion 211, the size of the mounting hole 214 along the Y-axis direction can be designed to be smaller, which is beneficial to reducing the size of the first damping swing arm assembly 2 along the Y-axis direction, so that the installation space required for the first damping swing arm assembly 2 is smaller, and the flexibility of position selection is higher.

[0137] In the above embodiments, the damping structure 22 has various structural forms. For example, the damping structure 22 can be an elastic member as a whole, and the elastic member includes but is not limited to a rubber body, a silicone body, a spring steel sheet and a coil spring. For another example, the damping structure 22 can be a combination of a rigid member and an elastic member.

[0138] In some embodiments, see Figure 15-17 The damping structure 22 includes a contact member 221 and an elastic member 222 .

[0139] The contact member 221 is located at the first opening C1. The elastic member 222 is located at the side of the contact member 221 facing away from the cam surface B. The elastic member 222 can be elastically retracted along the extension direction of the mounting hole 214, so that when the swing arm 21 rotates between the folded position and the unfolded position, the contact member 221 can contact and squeeze the cam surface B to generate the above-mentioned damping force F1.

[0140] In this way, the damping structure 22 cooperates with the cam surface B with the help of the contact piece 221. The contact piece 221 can be selected as a rigid piece. For example, the material of the contact piece 221 can be selected as a material with high hardness and good wear resistance such as ferritic stainless steel, titanium alloy, carbon fiber composite material, fiberglass, alumina ceramic and silicon nitride ceramic, which is used to improve the wear resistance of the contact piece 221 and extend the service life. At the same time, the damping structure 22 generates elastic force with the help of the elastic piece 222. The elastic piece 222 can be selected as a structural member with better elasticity. For example, the material of the elastic piece 222 can be selected as spring steel to increase the damping force. Therefore, the damping structure 22 provided in the embodiment of the present application can take into account both wear resistance and elasticity.

[0141] In the above embodiments, the contact member 221 may be in the shape of a needle, a column, a block or a ball. Figure 15-17 At least the surface of the contact member 221 facing the cam surface B is a convex spherical surface. Optionally, the contact member 221 is a spherical structure. In this way, the surface of the contact member 221 for contacting the cam surface B is smooth, which can reduce wear and avoid jamming.

[0142] The elastic member 222 may be a spring steel sheet or a coil spring. Figure 15-17 The elastic member 222 is a cylindrical coil spring, and the axial direction of the cylindrical coil spring is consistent with the extension direction of the mounting hole 214. The cylindrical coil spring has a large elastic force and a good structural stability, which can improve the damping force and extend the service life.

[0143] In some embodiments, see Figure 15-17 The rotating shaft base 1 further includes a cam portion 14. The cam portion 14 is disposed on one side of the rotating fitting portion A and protrudes toward the front side of the rotating shaft base 1. When the swing arm 21 is in the unfolded position, the cam portion 14 is located between the rotating fitting portion A and the mounting hole 214.

[0144] Optional, see Fig.15 and Fig.16 The cam portion 14 is arranged in the first avoidance notch 15. In this way, the compactness of the structure can be improved and the length of the swing arm 21 can be reduced.

[0145] The surface of the cam portion 14 facing away from the rotational mating portion A is the first side surface B1, the surface of the cam portion 14 facing the front side of the rotating shaft base 1 is the front end surface B2, and the cam portion 14 also includes a transition surface B3 connected between the first side surface B1 and the front end surface B2. The first side surface B1, the transition surface B3 and the front end surface B2 are connected to form a cam surface B.

[0146] When the swing arm 21 is in the extended position, refer to Fig.17 , the first opening C1 faces the first side surface B1, and the contact member 221 contacts the first side surface B1. When the swing arm 21 is in the semi-folded position, refer to Fig.19 , Fig.19 for Fig.17 The structure diagram of the rotating shaft mechanism 103 shown in the figure is in a semi-folded state, the first opening C1 faces the transition surface B3, and the contact member 221 contacts the transition surface B3. Fig.18 , the first opening C1 faces the front end surface B2, and the contact member 221 is spaced apart from the front end surface B2. This structure is simple and easy to implement.

[0147] In some embodiments, see Fig.17 The rotation axis of the rotational matching portion A and the rotating portion 211 is the first axis O1, and the first axis O1 extends along the Y-axis direction. The distance from the transition surface B3 to the first axis O1 is greater than the distance from the first side surface B1 to the first axis O1, and the distance from the transition surface B3 to the first axis O1 is also greater than the distance from the front end surface B2 to the first axis O1.

[0148] It should be noted that the distance from the first side surface B1 to the first axis O1 refers to the distance from any position of the first side surface B1 to the first axis O1. Similarly, the distance from the front end surface B2 to the first axis O1 refers to the distance from any position of the front end surface B2 to the first axis O1, and the distance from the transition surface B3 to the first axis O1 refers to the distance from any position of the transition surface B3 to the first axis O1.

[0149] Based on this, the distance from the transition surface B3 to the first axis O1 is greater than the distance from the first side surface B1 to the first axis O1, that is, the distance from any position of the transition surface B3 to the first axis O1 is greater than the distance from any position of the first side surface B1 to the first axis O1. It can also be understood that the minimum distance from the transition surface B3 to the first axis O1 is greater than the maximum distance from the first side surface B1 to the first axis O1.

[0150] Similarly, the distance from the transition surface B3 to the first axis O1 is greater than the distance from the front end surface B2 to the first axis O1, that is, the distance from any position of the transition surface B3 to the first axis O1 is greater than the distance from any position of the front end surface B2 to the first axis O1. It can also be understood that the minimum distance from the transition surface B3 to the first axis O1 is greater than the maximum distance from the front end surface B2 to the first axis O1.

[0151] In this way, the variation curve of the damping force F1 can be expressed as Fig.13 The single-peak shape that increases first and then decreases enables the swing arm 21 to hover in the unfolded position when no external force is applied.

[0152] In some embodiments, see Fig. 20 , Fig. 20 for Fig.15 and Fig.16 The 3D view of the second base 12 in the rotating shaft mechanism 103 is shown. The surface of the cam portion 14 facing the arc-shaped slide groove is a concave arc surface B4, which also forms part of the inner wall surface of the arc-shaped slide groove, that is, the concave arc surface B4 forms part of the concave area A2. In this way, the sliding matching area between the rotating portion 211 and the rotating matching portion A can be increased, stress concentration can be avoided, and jamming can be prevented.

[0153] In some embodiments, see Fig.21 , Fig.21 for Fig. 20 The second base 12 is shown in a three-dimensional view when viewed from the direction D1. The first side surface B1 includes a concave area B11, and the concave area B11 is a concave spherical area. When the swing arm 21 is in the unfolded position, at least part of the contact member 221 is accommodated in the groove surrounded by the concave area B11. In this way, the swing arm 21 can be stably suspended in the unfolded position.

[0154] In some embodiments, see Figure 22-Figure 24 , Fig. 22 for Fig.15 and Fig.16 The three-dimensional diagram of the swing arm 21 in the rotating shaft mechanism 103 shown in FIG. 1 is a three-dimensional diagram of the swing arm 21 in a certain viewing angle. Fig.23 for Fig. 22 The swing arm 21 is shown in a three-dimensional view from another perspective. Fig.24 for Fig. 22 The 3D cross-sectional view of the swing arm 21 is shown. The transition portion 213 is provided with an escape hole 213b that passes through the front end surface of the transition portion 213 and the back surface of the transition portion 213. When the swing arm 21 rotates between the unfolded position and the folded position, the cam portion 14 extends into the escape hole 213b or is pulled out of the escape hole 213b, and the first opening C1 is located on the inner wall surface of the escape hole 213b. In this way, the thickness of the transition portion 213 and the cam portion 14 can be avoided from overlapping, which is conducive to reducing the thickness of the rotating shaft mechanism 103.

[0155] In some embodiments, see Fig.23 and Fig.24 The swing arm 21 further includes a stopper 215 disposed on the inner wall surface of the avoidance hole 213b. The stopper 215 has a stopper surface 215a extending along the circumferential direction of the first opening C1 and contacting the inner wall surface of the mounting hole 214. From the mounting hole 214 to the rotating portion 211, the vertical distance from the stopper surface 215a to the central axis O2 of the mounting hole 214 gradually decreases. In this way, the stopper surface 215a is in a constricted shape, which can prevent the contact member 221 from falling.

[0156] In some embodiments, see Fig.23 and Fig.24 The stopper 215 is disposed on one side of the first opening C1 away from the front end surface of the transition portion 213 and on two opposite sides of the first opening C1 arranged along the first axis O1, and the side of the stopper 215 facing the front end surface of the transition portion 213 is open to form a second avoidance gap. In this way, while preventing the contact member 221 from falling, the stopper 215 can be prevented from interfering with the contact member 221 contacting the cam surface B, which can improve the compactness of the structure.

[0157] Of course, in other embodiments, the stopper 215 may also extend 360° along the circumference of the first opening C1 .

[0158] In some embodiments, please refer back to Figure 15-17 The end of the mounting hole 214 away from the rotating part 211 is opened to form a second opening C2. Based on this, the damping structure 22 further includes a blocking member 223. The blocking member 223 is disposed at the second opening C2, and the elastic member 222 is located between the blocking member 223 and the contact member 221.

[0159] In this way, the contact member 221 and the elastic member 222 can be installed in the installation hole 214 through the second opening C2 in sequence, and then the blocking member 223 is installed in the second opening C2. This assembly operation is simple and easy to implement.

[0160] Of course, in other embodiments, the end of the mounting hole 214 away from the rotating portion 211 may also be closed. Based on this, the contact member 221 and the elastic member 222 may be installed in the mounting hole 214 through the first opening C1, and this application does not make any specific limitation on this.

[0161] The blocking member 223 may be in a block shape, a column shape, a mesh shape, etc. The blocking member 223 may be welded to the second opening C2, or may be threadedly connected, bonded, or clamped to the second opening C2.

[0162] In some embodiments, see Fig.17 , at least part of the inner wall surface of the mounting hole 214 is provided with an internal thread. The blocking member 223 may be a screw, which includes a head and a rod. The head is arranged on a side of the connecting portion 212 away from the rotating portion 211, and at least part of the rod is located in the mounting hole 214 and is screwed into the internal thread.

[0163] In this way, the sealing member 223 is set at the second opening C2 by means of a threaded connection. By adjusting the spiral fitting length between the sealing member 223 and the internal thread, the elastic force of the elastic member 222 can be adjusted. Moreover, after the contact member 221 is worn, the spiral fitting length between the sealing member 223 and the internal thread can be adjusted to ensure the size of the elastic force.

[0164] Please continue reading Figure 15-17 , mounting piece 23 is used to install Figure 1 and Figure 2 The decorative part 30 in the embodiment of the present invention.

[0165] The mounting member 23 is fixed to the swing arm 21. Optionally, the mounting member 23 can be fixed to the swing arm 21 by welding, clamping, threading or integral molding.

[0166] In some embodiments, see Figure 15-17 The mounting member 23 may include a fixing portion 231 and a mounting portion 232 fixed to the fixing portion 231. The fixing portion 231 is clamped between the head and the connecting portion 212, and the fixing portion 231 is provided with a fixing hole 231a, and the rod portion is inserted into the fixing hole 231a. The mounting portion 232 is arranged on the front side of the swing arm 21, and the mounting portion 232 is used to install the decorative member 30. Optionally, at least one connecting hole 232a is provided on the mounting portion 232, and the number of the connecting holes 232a is two, and the mounting portion 232 is used to install the decorative member 30 by means of the at least one connecting hole 232a.

[0167] In this way, in addition to being used to block the second opening C2, the blocking member 223 is also used to fix the mounting member 23 to the swing arm 21, so that there is no need to set an additional opening or slot structure on the swing arm 21 for fixing the mounting member 23, thereby ensuring the structural integrity of the swing arm 21. On the premise of ensuring the structural strength of the swing arm 21, the volume of the swing arm 21 can be reduced, which is conducive to reducing the size of the first damping swing arm assembly 2 along the Y-axis direction and the Z-axis direction. At the same time, the mounting member 23 and the swing arm 21 are detachably connected by means of the blocking member 223, which can reduce maintenance costs.

[0168] In some embodiments, see Figure 15-17 , the fixing portion 231 and the mounting portion 232 are both plate-shaped, and the fixing portion 231 and the mounting portion 232 are substantially perpendicular. Based on this, the mounting member 23 also includes a bending portion 233 fixedly connected between the fixing portion 231 and the mounting portion 232, and the fixing hole 231a extends from the fixing portion 231 through the bending portion 233 to the mounting portion 232, and the fixing hole 231a also penetrates the edge of the fixing portion 231 away from the mounting portion 232. In this way, the fixing hole 231a reduces the amount of solid material at the bending portion 233, and the bending force required during bending is smaller. At the same time, the height of the fixing portion 231 along the Z-axis direction can be set to be smaller, which is conducive to the thinning of the first damping swing arm assembly 2 and even the entire machine.

[0169] In some embodiments, please refer to Figure 15-17 The back of the main body 212a is provided with a ridge portion 212c, and the ridge portion 212c protrudes from the back of the main body 212a to the front end surface away from the main body 212a. The extension direction of the ridge portion 212c is consistent with the extension direction of the mounting hole 214. The orthographic projection of the mounting hole 214 on the front end surface of the main body 212a overlaps with the orthographic projection of the ridge portion 212c on the front end surface of the main body 212a. In this way, the ridge portion 212c can ensure the structural strength of the portion of the main body 212a where the mounting hole 214 is provided, so as to reduce the volume of the main body 212a.

[0170] On the basis of the above, please refer to Fig.15 The bottom surface of the mounting groove 32 is provided with an avoidance groove 33. The extension direction of the avoidance groove 33 is consistent with the extension direction of the convex ridge portion 212c, and the convex ridge portion 212c can be slidably accommodated in the avoidance groove 33. In this way, by avoiding the convex ridge portion 212c with the avoidance groove 33, the compactness of the structure can be ensured, and the size of the assembly structure of the swing arm 21 and the first connecting member 3 can be reduced.

[0171] In some embodiments, please refer back to Fig. 9In addition to the aforementioned rotating shaft base 1, the first damping swing arm assembly 2, the first connecting member 3, the second damping swing arm assembly 4 and the second connecting member 5, the rotating shaft mechanism 103 also includes a first compensation device 1031 and a second compensation device 1032 arranged along the length direction of the rotating shaft base 1. The first damping swing arm assembly 2 and the second damping swing arm assembly 4 are located between the first compensation device 1031 and the second compensation device 1032.

[0172] Among them, the first compensation device 1031 and the second compensation device 1032 are used to rotatably connect the first structural member 101 to the second structural member 102, compensate for the effective supporting length of the hinge mechanism 103 for the folding screen 50, and provide damping force so that the whole machine can hover in the unfolded state or the folded state, while also being able to realize the synchronous rotation of the first structural member 101 and the second structural member 102.

[0173] The structure of the first compensation device 1031 is described in detail below. The structure of the second compensation device 1032 may be the same as that of the first compensation device 1031 and will not be described in detail here.

[0174] The first compensation device 1031 includes a compensation component, a synchronization component and a damping component. The specific structure of the compensation component is first introduced below.

[0175] See also Figure 25-28 , Fig.25 for Fig. 9 A schematic diagram of the three-dimensional structure of the first compensation device 1031 in the rotating shaft mechanism 103 as viewed from the front side; Fig.26 for Fig.25 The schematic diagram of the exploded structure of the first compensation device 1031 as seen from the front side is shown; Fig. 27 for Fig. 9 A schematic diagram of the three-dimensional structure of the first compensation device 1031 in the rotating shaft mechanism 103 as viewed from the back side; Fig.28 for Fig. 27 A schematic diagram of the exploded structure of the first compensation device 1031 as viewed from the back side is shown.

[0176] The compensation assembly may include the aforementioned shaft base 1, a first support member 7A, a second support member 7B, a first swing arm assembly 8A and a second swing arm assembly 8B.

[0177] The first support member 7A and the second support member 7B are respectively arranged on both sides in the width direction of the rotating shaft base 1. One side in the width direction of the first support member 7A is rotatably connected to one side in the width direction of the rotating shaft base 1 through the first connecting shaft 71A, so that the first support member 7A can rotate relative to the rotating shaft base 1 around the axis of the first connecting shaft 71A. One side in the width direction of the second support member 7B is rotatably connected to the other side in the width direction of the rotating shaft base 1 through the second connecting shaft 71B, so that the second support member 7B can rotate relative to the rotating shaft base 1 around the axis of the second connecting shaft 71B. Thus, the first support member 7A and the second support member 7B can rotate relative to the rotating shaft base 1 respectively.

[0178] In addition, the first swing arm assembly 8A and the second swing arm assembly 8B are also respectively arranged on both sides in the width direction of the rotating shaft base 1. The first swing arm assembly 8A connects the first support member 7A with the first structural member 101, so that the first structural member 101 can rotate relative to the first support member 7A. The second swing arm assembly 8B connects the second support member 7B with the second structural member 102, so that the second structural member 102 can rotate relative to the second support member 7B. Thus, the first structural member 101 can rotate relative to the rotating shaft base 1 by linking the first support member 7A with the first swing arm assembly 8A, and the second structural member 102 can rotate relative to the rotating shaft base 1 by linking the second support member 7B with the second swing arm assembly 8B, thereby enabling the first structural member 101 and the second structural member 102 to rotate relative to the rotating shaft base 1, respectively, and finally enabling the support device 10 to switch between the unfolded state and the folded state.

[0179] The first swing arm assembly 8A and the second swing arm assembly 8B are used to adjust the effective supporting length of the first compensation device 1031 on the folding screen 50, so that the effective supporting length of the first compensation device 1031 is equal to the screen length of the folding screen 50 in both the unfolded state and the folded state, thereby avoiding length difference and preventing irreversible damage to the folding screen 50.

[0180] The reasons for the above-mentioned length difference and the principle of compensating the length difference of the present application are described in detail below with reference to the accompanying drawings.

[0181] See also Figure 29-Figure 31 , Fig.29 for Fig.25 The cross-sectional structural diagram of the first compensation device 1031 when it is in a folded state; Fig.30 for Fig.25 The cross-sectional structural diagram of the first compensation device 1031 when it is in an expanded state; Fig.31 for Fig.25 The schematic diagram shows the principle of the first compensation device 1031 compensating for the length difference.

[0182] See also Fig.29 and Fig.31 When the first compensation device 1031 is in the folded state, the effective supporting length of the rotating shaft base 1, the first support member 7A, the second support member 7B, the first swing arm assembly 8A and the second swing arm assembly 8B for the folding screen 50 is the length of the U-shaped path from point A to point B. Fig.30 and Fig.31 When the first compensation device 1031 is in the unfolded state, the effective supporting length of the rotating shaft base 1, the first support member 7A, the second support member 7B, the first swing arm assembly 8A and the second swing arm assembly 8B for the folding screen 50 becomes the straight line length from point A1 to point B1. The length of the U-shaped path in the folded state becomes the length of the multiple arc paths from point A1 to point B1 in the unfolded state, and the length of the multiple arc paths is equal to the length of the U-shaped path, but the length of the multiple arc paths is greater than the straight line length from point A1 to point B1.

[0183] Therefore, when the first compensation device 1031 transforms its form, there will be a length difference in the effective support length of the folding screen 50, which is the difference between the length of the U-shaped path and the length of the straight line. This length difference needs to be compensated during the rotation of the electronic device to prevent the folding screen 50 from being squeezed and stretched during the rotation and being damaged.

[0184] See also Figure 29-Figure 31 The first swing arm assembly 8A and the second swing arm assembly 8B are both configured as retractable structures, so that the effective supporting length of each compensation assembly for the entire folding screen 50 can be adjusted. Fig.30 The expanded state shown is compared to Fig.29 In the folded state shown, the first swing arm assembly 8A extends in a direction away from the first support member 7A, and the extended length is L1; the second swing arm assembly 8B extends in a direction away from the second support member 7B, and the extended length is L2. The sum of the lengths of L1 and L2 can be set to be equal to the difference between the length of the U-shaped path and the length of the straight line, so as to compensate for the above-mentioned length difference, so that the first compensation device 1031 has the same effective support length for the entire folding screen 50 in the unfolded state and the folded state, and further, the effective support length of the support device 10 is equal to the screen length of the folding screen 50 in both the unfolded state and the folded state.

[0185] The following describes the main structural components of the first swing arm assembly 8A and the second swing arm assembly 8B and the structure for achieving length difference compensation in conjunction with the accompanying drawings. Figure 25-28, the first swing arm assembly 8A includes a first body bracket 81A, a first compensation bracket 82A and a first driving component 83A. One side of the first body bracket 81A in the width direction is rotatably connected to the other side of the first support member 7A in the width direction through the third connecting shaft 72A, and the first compensation bracket 82A is slidably connected to the first body bracket 81A, so that the first compensation bracket 82A and the first body bracket 81A can be rotated relative to the shaft base 1 through the first support member 7A, and the first compensation bracket 82A can slide in a direction close to or away from the first support member 7A. Among them, the first driving component 83A is configured to: drive the first compensation bracket 82A to slide relative to the first body bracket 81A. The first compensation bracket 82A is fixedly connected to the first structural member 101 of the foldable device 100.

[0186] The second swing arm assembly 8B includes a second body bracket 81B, a second compensation bracket 82B and a second driving component 83B. One side of the second body bracket 81B in the width direction is rotatably connected to the other side of the second support member 7B in the width direction through the fourth connecting shaft 72B, and the second compensation bracket 82B is slidably connected to the second body bracket 81B, so that the second compensation bracket 82B and the second body bracket 81B can be rotated relative to the shaft base 1 through the second support member 7B, and the second compensation bracket 82B can slide in a direction close to or away from the second support member 7B. Among them, the second driving component 83B is configured to: drive the second compensation bracket 82B to slide relative to the second body bracket 81B. The second compensation bracket 82B is used to be fixedly connected to the second structural member 102 of the foldable device 100.

[0187] It can be seen from this that by extending and retracting each compensation bracket in the first compensation bracket 82A and the second compensation bracket 82B and the corresponding main body bracket, the effective support length of the first compensation device 1031 supporting the folding screen 50 can be adjusted, so that the effective support length of the first compensation device 1031 in the unfolded state and the folded state is the same, thereby making the effective support length of the support device 10 in the unfolded state and the folded state the same, thereby compensating for the length difference between the effective support length of the support device 10 and the length of the folding screen 50, avoiding squeezing or stretching of the folding screen 50, and improving the reliability and life of the folding screen 50.

[0188] The following focuses on the structures of the first driving component 83A and the second driving component 83B.

[0189] See also Fig.32 , and refer to Figure 25-28 , Fig.32 for Fig.25The first compensation device 1031 is shown in a three-dimensional view from another perspective. The first driving component 83A can be set as a first slider 84A, one end of which can be rotatably connected to the shaft base 1, and the other end of the first slider 84A is slidably connected to the first body bracket 81A, so that the first slider 84A can slide along the width direction of the first body bracket 81A relative to the first body bracket 81A, so that the movement mode of the assembly composed of the shaft base 1, the first support member 7A, the first body bracket 81A and the first slider 84A is unique during the state change process, and the stability is better. Moreover, by sliding the first slider 84A relative to the first body bracket 81A, the first compensation bracket 82A can also be linked to slide relative to the first body bracket 81A.

[0190] The second driving component 83B can be set as a second slider 84B, one end of which can be rotatably connected to the shaft base 1, and the other end of the second slider 84B is slidably connected to the second body bracket 81B, so that the second slider 84B can slide along the width direction of the second body bracket 81B relative to the second body bracket 81B, so that the movement mode of the assembly composed of the shaft base 1, the second support member 7B, the second body bracket 81B and the second slider 84B is unique during the state change process, and the stability is better. Moreover, by sliding the second slider 84B relative to the second body bracket 81B, the second compensation bracket 82B can also be linked to slide relative to the second body bracket 81B.

[0191] In some embodiments, see Fig.32 , and refer to Figure 25-28 The first slider 84A is transmission-connected to the first compensation bracket 82A through the first link mechanism 85A, so that the sliding of the first slider 84A relative to the first body bracket 81A can be linked to the sliding of the first compensation bracket 82A relative to the first body bracket 81A through the first link mechanism 85A. The sliding direction of the first slider 84A relative to the first body bracket 81A is opposite to the sliding direction of the first compensation bracket 82A relative to the first body bracket 81A.

[0192] The second slider 84B is transmission-connected to the second compensation bracket 82B via the second link mechanism 85B, so that the sliding of the second slider 84B relative to the second body bracket 81B can be linked to the sliding of the second compensation bracket 82B relative to the second body bracket 81B via the second link mechanism 85B. The sliding direction of the second slider 84B relative to the second body bracket 81B is opposite to the sliding direction of the second compensation bracket 82B relative to the second body bracket 81B.

[0193] Each slider transmits power to each corresponding compensation bracket through each corresponding connecting rod mechanism. Using each connecting rod mechanism to transmit power has the advantages of simple and compact transmission component structure, high transmission efficiency and convenient assembly.

[0194] In one embodiment, please refer to Fig.32 Each first link mechanism 85A is rotatably connected to the first body bracket 81A, and each second link mechanism 85B is rotatably connected to the second body bracket 81B.

[0195] In some embodiments, please refer to Fig.32 The first link mechanism 85A includes one or more first links 851A. For example, the number of first links 851A is two, each of which is rotatably connected to the first main body bracket 81A, and one end of each first link 851A is rotatably and slidably connected to the first slider 84A, and the other end is rotatably and slidably connected to the first compensation bracket 82A.

[0196] The second link mechanism 85B includes one or more second links 851B. For example, there are two second links 851B. Each second link 851B is rotatably connected to the second main body bracket 81B, and one end of each second link 851B is rotatably and slidably connected to the second slider 84B, and the other end is rotatably and slidably connected to the second compensation bracket 82B.

[0197] In some embodiments, see Fig.33 , Fig.33 for Fig.26 The schematic diagram of the decomposed structure of the first compensation device 1031 shown in another perspective, each first connecting rod 851A is provided with a first pin hole 852A, and a first pivot shaft hole 818A is provided at a position corresponding to each first pin hole 852A on the first main body bracket 81A, and a first pin shaft (not shown in the figure) is inserted into each first pin hole 852A and the corresponding first pivot shaft hole 818A, so that each first connecting rod 851A can be rotatably connected to the first main body bracket 81A. A strip hole 853A is respectively provided at both ends of each first connecting rod 851A, and the first pin hole 852A is located between the strip holes 853A at both ends. A first connecting column 842A is provided at the position of the strip hole 853A opened at one end of each first connecting rod 851A on the first slider 84A, and the first connecting column 842A is rotatably and slidably connected in the corresponding strip hole 853A, so that one end of each first connecting rod 851A is rotatably and slidably connected to the first slider 84A; a second connecting column 828A is provided at the position of the strip hole 853A opened at the other end of each first connecting rod 851A on the first compensation bracket 82A, and the second connecting column 828A is rotatably and slidably connected in the corresponding strip hole 853A, so that the other end of each first connecting rod 851A is rotatably and slidably connected to the first compensation bracket 82A.

[0198] Each second connecting rod 851B is provided with a second pin hole 852B, and a second pivot shaft hole 818B is provided at a position corresponding to each second pin hole 852B on the second body bracket 81B, and a second pin shaft (not shown in the figure) is inserted into each second pin hole 852B and the corresponding second pivot shaft hole 818B, so that each second connecting rod 851B can be rotatably connected to the second body bracket 81B. Each second connecting rod 851B has a strip hole 853B at both ends, and the second pin hole 852B is located between the strip holes 853B at both ends. A third connecting column 842B is provided at a position corresponding to the strip hole 853B opened at one end of each second connecting rod 851B on the second slider 84B, and the third connecting column 842B is rotatably and slidably connected to the corresponding strip hole 853B, so that one end of each second connecting rod 851B is rotatably and slidably connected to the second slider 84B. A fourth connecting column 828B is provided at the position of the bar hole 853B opened on the second compensation bracket 82B corresponding to the other end of each second connecting rod 851B. The fourth connecting column 828B is rotatably and slidably connected in the corresponding bar hole 853B, so that the other end of each second connecting rod 851B is rotatably and slidably connected to the second compensation bracket 82B.

[0199] In the present application, the connection method between each connecting rod and the corresponding main body bracket, and between each sliding block and the corresponding compensation bracket is simple and easy to assemble and disassemble.

[0200] In some embodiments, see Fig.34 , Fig.34 for Fig.25 The front view of the partial structure of the first compensation device 1031 is shown. When the first compensation device 1031 is in the expanded state, the first connecting column 842A and the second connecting column 828A respectively abut against the outer ends of the corresponding strip holes 853A on the first connecting rod 851A, and the third connecting column 842B and the fourth connecting column 828B respectively abut against the outer ends of the corresponding strip holes 853B on the second connecting rod 851B.

[0201] When the first compensation device 1031 is in a folded state, the first connecting column 842A and the second connecting column 828A respectively abut against the inner ends of the corresponding strip holes 853A on the first connecting rod 851A, and the third connecting column 842B and the fourth connecting column 828B respectively abut against the inner ends of the corresponding strip holes 853B on the second connecting rod 851B.

[0202] When the first compensation device 1031 is folded from the unfolded state to the folded state, the first connecting column 842A and the second connecting column 828A slide from the outer end of the corresponding strip hole 853A on the first connecting rod 851A to the inner end, and the third connecting column 842B and the fourth connecting column 828B slide from the outer end of the corresponding strip hole 853B on the second connecting rod 851B to the inner end, so as to shorten the effective support length of the first compensation device 1031 for the folding screen 50. When the first compensation device 1031 is folded from the folded state to the unfolded state, the first connecting column 842A and the second connecting column 828A slide from the inner end of the corresponding strip hole 853A on the first connecting rod 851A to the outer end, and the third connecting column 842B and the fourth connecting column 828B slide from the inner end of the corresponding strip hole 853B on the second connecting rod 851B to the outer end, so as to extend the effective support length of the first compensation device 1031 for the folding screen 50. During the change of the compensation state, the first compensation device 1031 compensates for the difference in effective support length of the folding screen 50, thereby preventing the folding screen 50 from being squeezed and stretched and damaged during the rotation process.

[0203] In the above embodiment, in each first connecting rod 851A, the outer end of each bar hole 853A is the end of the bar hole 853A away from the first pin hole 852A, and the inner end of each bar hole 853A is the end of the bar hole 853A close to the first pin hole 852A.

[0204] In each second connecting rod 851B, the outer end of each strip hole 853B is an end of the strip hole 853B away from the second pin hole 852B, and the inner end of each strip hole 853B is an end of the strip hole 853B close to the second pin hole 852B.

[0205] The above mainly introduces the compensation component of the first compensation device 1031 in detail. The following describes the synchronization component and the damping component of the first compensation device 1031 in conjunction with the accompanying drawings.

[0206] In some embodiments, please refer back to Fig.25 and Fig.26 The first compensation device 1031 may further include a synchronization component 6, which drives the first swing arm component 8A and the second swing arm component 8B to rotate synchronously relative to the shaft base 1.

[0207] The specific structure of the synchronization component 6 is not limited. In an exemplary structure, the synchronization component 6 may include a first synchronization swing arm 6A and a second synchronization swing arm 6B, one end of the first synchronization swing arm 6A is rotatably connected to one side of the shaft base 1, and the other end is slidably connected to the first body bracket 81A. One end of the second synchronization swing arm 6B is rotatably connected to the other side of the shaft base 1, and the other end is slidably connected to the second body bracket 81B. One end of the first synchronization swing arm 6A and one end of the second synchronization swing arm 6B rotate synchronously and in the opposite direction. In some embodiments, one end of the first synchronization swing arm 6A and one end of the second synchronization swing arm 6B are provided with gears, and the two gears are directly meshed, or an even number of intermediate gears are provided between the two gears, so that one end of the first synchronization swing arm 6A and one end of the second synchronization swing arm 6B rotate synchronously and in the opposite direction. The two synchronization swing arms rotate synchronously in the opposite direction, so that the compensation components of the first compensation device 1031 can rotate synchronously, thereby improving the user experience.

[0208] See also Figure 35-Figure 38 , Fig.35 for Fig.25 An assembly diagram of the damping assembly in the first compensation device 1031 is shown; Fig.36 for Fig.35 A schematic diagram of the exploded structure of the damping assembly shown; Fig.37 for Fig.36 An exploded structural diagram of a portion of the structure of the damping assembly shown; Fig.38 for Fig.36 Schematic diagram of the back structure of the slider in the damping assembly shown.

[0209] See also Fig.35 , and refer to Fig.33 In one embodiment, a first damping assembly 9A is disposed on the first body bracket 81A, and the first damping assembly 9A is configured to apply an extrusion force to the first slider 84A along the length direction of the first body bracket 81A. Fig.33 A second damping assembly 9B is disposed on the second body bracket 81B, and the second damping assembly 9B is configured to apply an extrusion force to the second slider 84B along the length direction of the second body bracket 81B.

[0210] When the user operates the electronic device to rotate the first compensation device 1031, the user will get a force feedback, which enhances the user's experience. In addition, in the first compensation device 1031, each damping component applies a squeezing force to the corresponding slider, thereby providing damping to the slider, or it can be understood that each slider is a damping slider, that is, each damping slider is reused as a driving component in the corresponding compensation component, and no additional driving component is required, and the structure is simple and compact.

[0211] In some embodiments, see Fig.35 and Fig.36 , and refer to Fig.33 The front end surface of the first body bracket 81A is provided with a receiving groove 822A, and the first slider 84A can be slidably connected in the receiving groove 822A. The bottom surface of the receiving groove 822A is provided with an installation bin 819A, and the first damping assembly 9A is installed in the installation bin 819A.

[0212] The front end surface of the second body bracket 81B is provided with a receiving groove 822B, and the second slider 84B can be slidably connected in the receiving groove 822B. The bottom surface of the receiving groove 822B is provided with an installation chamber 819B, and the second damping assembly 9B is installed in the installation chamber 819B of the second body bracket 81B.

[0213] In some embodiments, see Fig.37 and Fig.38 The first damping assembly 9A may include a first elastic member 92A and two first rolling assemblies 91A disposed at both ends of the first elastic member 92A. A avoidance groove 844A is provided on the surface of the first slider 84A facing the first damping assembly 9A. Both sides of the avoidance groove 844A disposed opposite to each other along the length direction of the rotating shaft base 1 have sliding surfaces 845A for the corresponding first rolling assembly 91A to roll. The sliding surface 845A is configured as a concave-convex surface, which includes a first concave surface 846A, a convex surface 847A and a second concave surface 848A connected in sequence.

[0214] The second damping assembly 9B may include a second elastic member (not shown in the figure) and two second rolling assemblies (not shown in the figure) disposed at both ends of the second elastic member. The surface of the second slider 84B facing the second damping assembly is provided with an escape groove, and both sides of the escape groove oppositely disposed along the length direction of the rotating shaft base 1 have sliding surfaces for the corresponding second rolling assemblies to roll, and the sliding surfaces are configured as concave-convex surfaces, and the concave-convex surfaces include a first concave surface, a convex surface, and a second concave surface connected in sequence.

[0215] When the first compensation device 1031 is in the unfolded state, each first rolling assembly 91A abuts against the first concave surface 846A of the sliding surface 845A corresponding to the first slider 84A, and each second rolling assembly abuts against the first concave surface of the sliding surface corresponding to the second slider, which is consistent with the first damping assembly. When the first compensation device 1031 is in the folded state, each first rolling assembly 91A abuts against the second concave surface 848A of the sliding surface 845A corresponding to the first slider 84A, and each second rolling assembly abuts against the second concave surface of the sliding surface corresponding to the second slider.

[0216] In this way, each slider of the first compensation device 1031 is located in a concave surface of the corresponding sliding surface when in the unfolded state and the folded state, ensuring that the first compensation device 1031 is not prone to relative rotation when in these two states, thereby enhancing the stability and reliability of the electronic device when in use. At the same time, the two ends of each slider are slidably connected to the two sides of the corresponding main body bracket receiving groove, which can further enhance the relative sliding stability between each slider and the corresponding main body bracket, and make the structure of each compensation component more compact.

[0217] When the first compensation device 1031 switches from the unfolded state to the folded state, the rolling body 912A of each first rolling component 91A rolls from the position where it abuts against the first concave surface 846A of the sliding surface 845A, through the convex surface 847A, to the position where it abuts against the second concave surface 848A, and the rolling body of each second rolling component rolls from the position where it abuts against the first concave surface of the sliding surface, through the convex surface, to the position where it abuts against the second concave surface.

[0218] When the first compensation device 1031 switches from a folded state to an unfolded state, the rolling body 912A of each first rolling component 91A rolls from a position abutting against the second concave surface 848A of the sliding surface 845A through the convex surface 847A to a position abutting against the first concave surface 846A, and the rolling body of each second rolling component rolls from a position abutting against the second concave surface of the sliding surface through the convex surface to a position abutting against the first concave surface.

[0219] In some embodiments, see Fig.37 , the first elastic member 92A in the first damping assembly 9A, the second damping assembly 9B (see Fig.33 ) are all corrugated elastic members, and are arranged in the corresponding main body bracket installation compartment.

[0220] As the whole machine becomes thinner, the thickness of the first compensation device 1031 and the second compensation device 1032 gradually decreases, and the thickness of the internal first damping component 9A and the second damping component 9B is relatively small, and the damping force provided is insufficient, especially when the whole machine is in the unfolded state. Due to insufficient damping force, it is difficult for the whole machine to hover in the unfolded state.

[0221] Based on this, the first damping swing arm assembly 2 and the second damping swing arm assembly 4 located between the first compensation device 1031 and the second compensation device 1032 can provide intermediate supplementary damping force in the unfolded state, so that the whole machine can stably hover in the unfolded state, thereby improving the impact resistance of the folding screen 50. At the same time, since the first damping swing arm assembly 2 and the second damping swing arm assembly 4 are small in the Y-axis direction and the Z-axis direction, the position setting in the length direction of the rotating shaft mechanism 103 is more flexible and will not affect the size of the whole machine in the Y-axis direction.

[0222] In the description of this specification, specific features, structures, materials or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

[0223] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A rotating shaft mechanism, characterized in that: include: A rotating shaft base is provided with a cam surface; a first connecting member; The swing arm comprises a rotating part and a connecting part which are fixedly connected, wherein the rotating part is rotatably connected to the rotating shaft base, and the connecting part is connected to the first connecting member; the swing arm is provided with a mounting hole extending from the connecting part to the rotating part, and one end of the mounting hole facing the rotating part is open to form a first opening, and the first opening faces the cam surface; The damping structure is accommodated in the mounting hole and can be elastically extended and retracted along the extension direction of the mounting hole; when the swing arm rotates between the unfolded position and the folded position, the damping structure cooperates with the cam surface to provide a damping force.

2. The rotating shaft mechanism according to claim 1, characterized in that: The damping structure comprises: A contact member, located at the first opening; The elastic member is located on a side of the contact member that is away from the cam surface, and the elastic member can elastically expand and contract along the extending direction of the mounting hole.

3. The rotating shaft mechanism according to claim 2, characterized in that: At least a surface of the contact member facing the cam surface is a convex spherical surface.

4. The rotating shaft mechanism according to claim 2 or 3, characterized in that: The elastic member is a cylindrical helical spring; The axial direction of the cylindrical coil spring is consistent with the extending direction of the mounting hole.

5. The rotating shaft mechanism according to any one of claims 1 to 4, characterized in that: The rotating shaft base comprises: A rotational matching portion, which cooperates with the rotating portion to achieve a rotatable connection; The cam portion is arranged on one side of the rotating fitting portion and protrudes toward the front side of the rotating shaft base; when the swing arm is in the unfolded position, the cam portion is located between the rotating fitting portion and the mounting hole; wherein, The surface of the cam portion facing away from the rotational fitting portion is a first side surface, the surface of the cam portion facing the front side of the rotating shaft base is a front end surface, and the cam portion further includes a transition surface connected between the first side surface and the front end surface; The first side surface, the transition surface and the front end surface are connected to form the cam surface.

6. The rotating shaft mechanism according to claim 5, characterized in that: The rotation axis of the rotational matching portion and the rotating portion is a first axis; The distance from the transition surface to the first axis is greater than the distance from the first side surface to the first axis, and the distance from the transition surface to the first axis is also greater than the distance from the front end surface to the first axis.

7. The rotating shaft mechanism according to claim 5 or 6, characterized in that: The first side includes a concave region; When the swing arm is in the extended position, at least a portion of the contact piece is accommodated in the groove surrounded by the concave area.

8. The rotating shaft mechanism according to any one of claims 5 to 7, characterized in that: The mounting hole is provided on the connecting portion, and the swing arm further comprises a transition portion fixedly connected between the connecting portion and the rotating portion; The transition portion is provided with an avoidance hole which passes through the front end surface of the transition portion and the back surface of the transition portion. When the swing arm rotates between the unfolded position and the folded position, the cam portion extends into the avoidance hole or is pulled out of the avoidance hole. The first opening is located on the inner wall surface of the avoidance hole.

9. The rotating shaft mechanism according to claim 8, characterized in that: The swing arm further includes a stopper portion arranged on the inner wall surface of the avoidance hole; The stop portion has a stop surface extending along the circumference of the first opening and connected to the inner wall surface of the mounting hole, and a vertical distance from the stop surface to the central axis of the mounting hole gradually decreases from the mounting hole to the cam surface.

10. The rotating shaft mechanism according to claim 9, characterized in that: The rotation axis of the rotational matching portion and the rotating portion is a first axis; The stopper is disposed on one side of the first opening away from the front end surface of the transition portion and on two opposite sides of the first opening arranged along the first axis, and one end of the stopper facing the front end surface of the transition portion is open.

11. The rotating shaft mechanism according to any one of claims 8 to 10, characterized in that: The rotating matching portion is an arc-shaped slide groove arranged in the rotating shaft base; the rotating portion is accommodated in the arc-shaped slide groove and can slide along the arc-shaped slide groove; The shaft base is also provided with a first avoidance gap, which is connected to the arc-shaped slide groove. When the swing arm is in the unfolded position, the transition portion is accommodated in the first avoidance gap, and the cam portion is arranged in the first avoidance gap.

12. The rotating shaft mechanism according to claim 11, characterized in that: The surface of the cam portion facing the arc-shaped slide groove is a concave arc surface, and the concave arc surface forms a part of the inner wall surface of the arc-shaped slide groove.

13. The rotating shaft mechanism according to any one of claims 2 to 4, characterized in that: One end of the mounting hole away from the rotating part is opened to form a second opening; The damping structure also includes: The blocking member is arranged at the second opening, and the elastic member is located between the blocking member and the contact member.

14. The rotating shaft mechanism according to claim 13, characterized in that: At least part of the inner wall surface of the mounting hole is provided with an internal thread; The blocking member is a screw, which includes a head and a rod. The head is arranged on a side of the connecting portion away from the rotating portion, and at least a portion of the rod is located in the mounting hole and is screwed into the internal thread.

15. The rotating shaft mechanism according to claim 14, characterized in that: Also includes: The mounting part includes a fixing portion and a mounting portion fixed to the fixing portion, the fixing portion is clamped between the head portion and the connecting portion, and the fixing portion is provided with a fixing hole, and the rod portion is passed through the fixing hole; the mounting portion is arranged on the front side of the swing arm, and the mounting portion is used to install a decorative part.

16. The rotating shaft mechanism according to any one of claims 1 to 6, characterized in that: The connecting part includes a main body and a sliding part arranged on the main body, and the mounting hole is arranged on the main body; The first connecting member is provided with a slide rail, and the sliding part is slidably connected to the slide rail; when the swing arm rotates between the unfolded position and the folded position, the sliding part is slidable along the slide rail.

17. The rotating shaft mechanism according to claim 16, characterized in that: The sliding portion includes a first sliding portion and a second sliding portion located at opposite sides of the main body; The first connecting member is provided with a mounting groove which is recessed from the front end of the first connecting member to the back side of the first connecting member, and the slide rail includes a first slide groove and a second slide groove which are arranged on two opposite side walls of the mounting groove; The main body can be slidably accommodated in the installation groove, the first sliding part can be slidably accommodated in the first sliding groove, and the second sliding part can be slidably accommodated in the second sliding groove.

18. The rotating shaft mechanism according to claim 17, characterized in that: A convex ridge portion is provided on the back of the main body portion, the extension direction of the convex ridge portion is consistent with the extension direction of the mounting hole, and the orthographic projection of the mounting hole on the front end surface of the main body portion overlaps with the orthographic projection of the convex ridge portion on the front end surface of the main body portion; The bottom surface of the installation groove is provided with an avoidance groove, the extension direction of the avoidance groove is consistent with the extension direction of the convex ridge portion, and the convex ridge portion can be slidably accommodated in the avoidance groove.

19. The rotating shaft mechanism according to any one of claims 1 to 18, characterized in that: It also includes a first compensation device and a second compensation device, wherein the first compensation device and the second compensation device are arranged along the length direction of the rotating shaft base. The swing arm is located between the first compensating device and the second compensating device.

20. A foldable device, characterized in that: include: a first structural member; A second structural member; In the rotating shaft mechanism according to any one of claims 1 to 19, the first structural member is connected to the first connecting member, and the second structural member is connected to the rotating shaft base.

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