Rotating shaft mechanism and foldable electronic device

Abstract

A rotating shaft mechanism (30), comprising a rotating shaft base (300), a first swing arm (310) and a second swing arm (320). One end of the first swing arm (310) is connected to the rotating shaft base (300), and the other end of the first swing arm (310) is connected to one end of the second swing arm (320); the first swing arm (310) can rotate relative to the rotating shaft base (300), and the second swing arm (320) can rotate relative to the first swing arm (310), such that the rotating shaft mechanism (30) can rotate to a first state; the rotation axes of the first swing arm (310) and the second swing arm (320) are parallel to each other. The first swing arm (310) comprises a first support surface (F1), and the second swing arm (320) comprises a second support surface (F2). When the rotating shaft mechanism (30) rotates to the first state, the first support surface (F1) and the second support surface (F2) are coplanar and perpendicular to the thickness direction of the rotating shaft base (300). In this case, the first support surface (F1) and the second support surface (F2) can provide better support, thereby improving impact resistance. Also provided is a foldable electronic device.

Description

Rotating shaft mechanism and foldable electronic device

[0001] The present application claims priority to the Chinese patent application No. 202410970014.X, filed on July 18, 2024, and entitled "Rotating shaft mechanism and foldable electronic device", the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] The present application relates to the technical field of electronic products, and in particular to a rotating shaft mechanism and a foldable electronic device. BACKGROUND

[0003] With the improvement of people's demand, foldable electronic devices are more and more concerned and favored by people. The foldable electronic device usually includes a rotating shaft mechanism, two housings and a screen. Among them, the two housings are respectively arranged on the opposite sides of the rotating shaft mechanism, and the screen covers the rotating shaft mechanism and the two housings. The two housings can be relatively rotated through the rotating shaft mechanism, thereby driving the screen to bend or flatten, so as to realize the switching of the foldable electronic device between the folded state and the flattened state.

[0004] However, when the foldable electronic device is in the flattened state, the current rotating shaft mechanism cannot effectively support the screen, thereby causing the problem of poor impact resistance of the area where the rotating shaft mechanism is located in the flattened state. SUMMARY

[0005] Some embodiments of the present application provide a rotating shaft mechanism and a foldable electronic device, which can effectively improve the impact resistance of the area where the rotating shaft mechanism is located in the flattened state.

[0006] The present application is introduced from multiple aspects below, and the embodiments and advantages of the multiple aspects below can be mutually referenced.

[0007] In a first aspect, the embodiments of the present application provide a rotating shaft mechanism. The rotating shaft mechanism includes a rotating shaft base, a first swing arm and a second swing arm. Among them, one end of the first swing arm is connected with the rotating shaft base, the other end of the first swing arm is connected with one end of the second swing arm, the first swing arm can rotate relative to the rotating shaft base, and the second swing arm can rotate relative to the first swing arm, so that the rotating shaft mechanism can be rotated to a first state, and the rotation axes of the first swing arm and the second swing arm are parallel to each other. The first swing arm includes a first support surface, and the second swing arm includes a second support surface. When the rotating shaft mechanism is rotated to the first state, the first support surface and the second support surface are coplanar and perpendicular to the thickness direction of the rotating shaft base.

[0008] The rotation shaft mechanism can effectively reduce the rotation angle of a single swing arm through the cooperation of the first swing arm and the second swing arm, thereby reducing or even avoiding the swing arm from avoiding other components (for example, the screen of the foldable electronic device). In this way, the rotation shaft mechanism can better support other components (for example, the screen of the foldable electronic device) in the first state, thereby improving the impact resistance.

[0009] In some possible implementation manners of the first aspect, one of the rotation shaft base and the first swing arm comprises a first circular-arc-shaped slot, and the other comprises a first circular-arc-shaped sliding part. The first circular-arc-shaped sliding part is arranged in the first circular-arc-shaped slot, and one of the first circular-arc-shaped slot and the first circular-arc-shaped sliding part can rotate relative to the other, so that the first swing arm is rotationally connected with the rotation shaft base.

[0010] Alternatively, in some other possible implementation manners, the rotation shaft base and the first swing arm can also be rotationally connected through a rotation shaft.

[0011] In some possible implementation manners of the first aspect, one of the first swing arm and the second swing arm comprises a second circular-arc-shaped slot, and the other comprises a second circular-arc-shaped sliding part. The second circular-arc-shaped sliding part is arranged in the second circular-arc-shaped slot, and one of the second circular-arc-shaped slot and the second circular-arc-shaped sliding part can rotate relative to the other, so that the second swing arm is rotationally connected with the first swing arm.

[0012] Alternatively, in some other possible implementation manners, the first swing arm and the second swing arm can also be rotationally connected through a rotation shaft.

[0013] In some possible implementation manners of the first aspect, the rotation shaft mechanism further comprises a first connecting block, and the other end of the second swing arm is rotationally connected with the first connecting block. One of the first connecting block and the second swing arm comprises a third circular-arc-shaped slot, and the other comprises a third circular-arc-shaped sliding part. The third circular-arc-shaped sliding part is arranged in the third circular-arc-shaped slot, and one of the third circular-arc-shaped slot and the third circular-arc-shaped sliding part can rotate relative to the other, so that the first connecting block is rotationally connected with the second swing arm.

[0014] Alternatively, in some other possible implementation manners, the first connecting block and the second swing arm can also be rotationally connected through a rotation shaft. Alternatively, in some other possible implementation manners, the first connecting block and the second swing arm can also be rotationally connected through a rotation shaft.

[0015] In some possible implementation manners of the first aspect, the rotating shaft mechanism further includes a third swing arm, one end of the third swing arm is connected to the rotating shaft base, the third swing arm is capable of rotating relative to the rotating shaft base, the rotation axis of the third swing arm is parallel to the rotation axis of the first swing arm, and the third swing arm is arranged in a spaced manner along the extension direction of the rotation axis of the first swing arm. By arranging the third swing arm, the rotating stability of the rotating shaft mechanism can be further improved.

[0016] In some possible implementation manners of the first aspect, the first swing arm and the third swing arm are in sliding and rotating connection. In this way, the rotating shaft mechanism can have a determined motion trajectory, that is, the degree of freedom of the rotating shaft mechanism is 1.

[0017] In some possible implementation manners of the first aspect, one of the first swing arm and the third swing arm includes a pin shaft, and the other includes a pin shaft slot. The pin shaft is inserted into the pin shaft slot and is capable of sliding and rotating relative to the pin shaft slot, so that the first swing arm and the third swing arm are in sliding and rotating connection.

[0018] In some possible implementation manners of the first aspect, the second swing arm and the third swing arm are in sliding and rotating connection. In this way, the rotating shaft mechanism can have a determined motion trajectory, that is, the degree of freedom of the rotating shaft mechanism is 1.

[0019] In some possible implementation manners of the first aspect, the rotating shaft mechanism further includes a first connecting block, the other end of the third swing arm is in rotating or sliding connection with the first connecting block. The first swing arm is in sliding and rotating connection with the first connecting block. In this way, the rotating shaft mechanism can have a determined motion trajectory, that is, the degree of freedom of the rotating shaft mechanism is 1.

[0020] In some possible implementation manners of the first aspect, the rotating shaft mechanism includes a door plate and a first connecting block, the door plate is in rotating connection with the first connecting block, and the first connecting block is in rotating or sliding connection with the other end of the third swing arm. The door plate is in sliding and rotating connection with one of the first swing arm, the second swing arm or the third swing arm.

[0021] In this way, the rotating shaft mechanism can have a determined motion trajectory, that is, the degree of freedom of the rotating shaft mechanism is 1. The door plate is helpful to improve the support capability of the rotating shaft mechanism on other components (for example, the screen of the foldable electronic device).

[0022] In some possible implementation manners of the first aspect, the rotating shaft mechanism includes a door plate and a first connecting block, the door plate is in rotating connection with the first connecting block, and the first connecting block is in rotating or sliding connection with the other end of the third swing arm. The door plate is in sliding and rotating connection with any two of the first swing arm, the second swing arm or the third swing arm.

[0023] In this way, the rotation shaft mechanism has a certain movement track, that is, the degree of freedom of the rotation shaft mechanism is 1. The door plate helps to improve the support ability of the rotation shaft mechanism to other components (for example, the screen of the foldable electronic device).

[0024] In some possible implementation manners of the first aspect, the rotation shaft mechanism comprises a first connecting block, a door plate, and a door plate swing arm. The door plate is rotationally connected with the first connecting block, and the first connecting block is rotationally or slidingly connected with the other end of the third swing arm. One end of the door plate swing arm is rotationally connected with the rotation shaft base, and the other end is rotationally or slidingly connected with the door plate.

[0025] In this way, the rotation shaft mechanism has a certain movement track, that is, the degree of freedom of the rotation shaft mechanism is 1. The door plate helps to improve the support ability of the rotation shaft mechanism to other components (for example, the screen of the foldable electronic device).

[0026] In some possible implementation manners of the first aspect, the rotation shaft mechanism comprises a door plate, which is fixedly connected with one of the first swing arm, the second swing arm, or the third swing arm.

[0027] In this way, the rotation shaft mechanism has a certain movement track, that is, the degree of freedom of the rotation shaft mechanism is 1. The door plate helps to improve the support ability of the rotation shaft mechanism to other components (for example, the screen of the foldable electronic device).

[0028] In some possible implementation manners of the first aspect, the rotation shaft mechanism comprises a rotation shaft, which is arranged in the third swing arm and the rotation shaft base, so that the third swing arm is rotationally connected with the rotation shaft base.

[0029] In some possible implementation manners of the first aspect, one of the rotation shaft base and the third swing arm comprises a fifth circular-arc-shaped slot, and the other comprises a fifth circular-arc-shaped sliding part. The fifth circular-arc-shaped sliding part is arranged in the fifth circular-arc-shaped slot, and one of the fifth circular-arc-shaped slot and the fifth circular-arc-shaped sliding part is rotatable relative to the other, so that the third swing arm is rotationally connected with the rotation shaft base.

[0030] In the second aspect, the embodiments of the present application provide a foldable electronic device. The foldable electronic device comprises a first shell, a second shell, and the rotation shaft mechanism described in any one of the first aspect. The first shell and the second shell are rotationally connected through the rotation shaft mechanism. The rotation shaft mechanism can be rotated from a first state to a second state. When the rotation shaft mechanism is rotated to the first state, the foldable electronic device is in a flat state, and the first support surface and the second support surface are used to support the screen of the foldable electronic device. When the rotation shaft mechanism is rotated to the second state, the foldable electronic device is in a folded state.

[0031] The cooperation of the first swing arm and the second swing arm can effectively reduce the rotation angle of a single swing arm, thereby reducing or even avoiding the swing arm from avoiding the screen of the foldable electronic device. In this way, when the foldable electronic device is in the unfolded state, the first support surface and the second support surface of the rotation shaft mechanism can better support the screen of the foldable electronic device, thereby improving the impact resistance of the area where the rotation shaft mechanism is located when the foldable electronic device is in the unfolded state.

[0032] In some possible implementation manners of the second aspect, the first shell includes a first stop structure, and the second swing arm includes a second stop structure. When the foldable electronic device is in the folded state, the second stop structure cooperates with the first stop structure to limit the second swing arm in the thickness direction of the foldable electronic device. When the foldable electronic device is in the unfolded state, the second stop structure is separated from the first stop structure.

[0033] Since the first stop structure and the second stop structure are cooperated when the foldable electronic device is in the folded state, when the rotation shaft base of the foldable electronic device in the folded state is impacted by the outside world (for example, when the foldable electronic device falls or collides), the impact force received by the rotation shaft base can be transmitted to the second swing arm, and then transmitted to the first stop structure of the first shell via the second stop structure of the second swing arm, and further transmitted to the first shell. The first shell can limit the second swing arm in the thickness direction of the foldable electronic device, thereby reducing the displacement of the second swing arm relative to the first shell in the thickness direction of the foldable electronic device, further reducing the displacement of the rotation shaft base relative to the first shell in the thickness direction of the foldable electronic device, and finally reducing the impact of the rotation shaft base on the screen of the foldable electronic device, thereby improving the reliability of the foldable electronic device.

[0034] In some possible implementation manners of the first aspect, the first stop structure is a groove, and the second stop structure is a protrusion matched with the groove.

[0035] According to the embodiments of the present application, since the first stop structure is a groove opened on the first shell instead of a protrusion arranged on the first shell, the first stop structure can be prevented from interfering with other components (for example, the rotation shaft base) when the first shell rotates.

[0036] In some possible implementation manners of the first aspect, the first swing arm includes a second circular-arc-shaped groove, the extension direction of the second stop structure is parallel to the rotation axis of the second swing arm, at least part of the second stop structure has a circular-arc-shaped cross section and is arranged in the second circular-arc-shaped groove, and the end of the second stop structure in the extension direction thereof constitutes a second circular-arc-shaped sliding part. One of the second circular-arc-shaped groove and the second circular-arc-shaped sliding part can rotate relative to the other, so that the second swing arm is rotationally connected with the first swing arm.

[0037] Thus, the second stop structure of the second swing arm can be used to cooperate with the first stop structure of the first shell and the second arc-shaped slot of the first swing arm, and thus, two structures for respectively cooperating with the first stop structure and the second arc-shaped slot do not need to be separately designed on the second swing arm, and the structure of the second swing arm is effectively simplified.

[0038] In some possible implementation manners of the first aspect, the rotating shaft mechanism comprises a first connecting block, which is arranged between the first shell and the second swing arm and used to connect the first shell and the second swing arm. BRIEF DESCRIPTION OF DRAWINGS

[0039] FIG. 1A shows a perspective view of a folding mobile phone in an unfolded state according to an embodiment of the present application;

[0040] FIG. 1B shows a perspective view of a folding mobile phone in a folded state according to an embodiment of the present application;

[0041] FIG. 2A shows an exemplary structure one of a rotating shaft mechanism according to some embodiments;

[0042] FIG. 2B shows an exemplary structure two of a rotating shaft mechanism according to some embodiments;

[0043] FIG. 3A shows a perspective view of a rotating shaft mechanism according to an embodiment of the present application;

[0044] FIG. 3B shows an exploded view of a rotating shaft mechanism according to an embodiment of the present application;

[0045] FIG. 4A shows a cross-sectional view one of a rotating shaft mechanism along A-A in FIG. 3A according to an embodiment of the present application;

[0046] FIG. 4B shows a cross-sectional view two of a rotating shaft mechanism along A-A in FIG. 3A according to an embodiment of the present application;

[0047] FIG. 5A shows an assembly view of a rotating shaft base and a first swing arm according to an embodiment of the present application;

[0048] FIG. 5B shows an exploded view of a rotating shaft base and a first swing arm according to an embodiment of the present application;

[0049] FIG. 5C shows a schematic view of the rotation of a first swing arm relative to a rotating shaft base according to an embodiment of the present application;

[0050] FIG. 6A shows an assembly view of a first swing arm and a second swing arm according to an embodiment of the present application;

[0051] FIG. 6B shows an exploded view of a first swing arm and a second swing arm according to an embodiment of the present application;

[0052] FIG. 6C shows a schematic view of the rotation of a second swing arm relative to a first swing arm according to an embodiment of the present application;

[0053] Figure 7A shows an assembly view of the second swing arm and the first connecting block according to an embodiment of the present application;

[0054] Figure 7B shows an exploded view of the second swing arm and the first connecting block according to an embodiment of the present application;

[0055] Figure 7C shows a schematic view of the rotation of the first connecting block relative to the second swing arm according to an embodiment of the present application;

[0056] Figure 8 shows an exemplary arrangement of the first and second stop structures according to an embodiment of the present application;

[0057] Figure 9A shows an assembly view of the rotating shaft base, the third swing arm and the first connecting block according to an embodiment of the present application;

[0058] Figure 9B shows an exploded view of the rotating shaft base, the third swing arm and the first connecting block according to an embodiment of the present application;

[0059] Figure 9C shows a schematic view of the rotation of the third swing arm relative to the rotating shaft base according to an embodiment of the present application;

[0060] Figure 10A shows a schematic view of the high pair connection between the second swing arm and the third swing arm according to an embodiment of the present application;

[0061] Figure 10B shows a schematic view of the high pair connection between the second swing arm and the third swing arm according to an embodiment of the present application;

[0062] Figure 10C shows a schematic view of the high pair connection between the second swing arm and the third swing arm according to an embodiment of the present application;

[0063] Figure 11A shows a perspective view of a rotating shaft mechanism according to some other embodiments of the present application;

[0064] Figure 11B shows an exploded view of a rotating shaft mechanism according to some other embodiments of the present application;

[0065] Figure 12A shows a schematic view of the high pair connection between the first swing arm and the third swing arm according to an embodiment of the present application;

[0066] Figure 12B shows a schematic view of the high pair connection between the first swing arm and the third swing arm according to an embodiment of the present application;

[0067] Figure 12C shows a schematic view of the high pair connection between the first swing arm and the third swing arm according to an embodiment of the present application;

[0068] Figure 13A shows a perspective view of a rotating shaft mechanism according to some other embodiments of the present application;

[0069] Figure 13B shows an exploded view of a rotating shaft mechanism according to some other embodiments of the present application;

[0070] Fig. 14A shows a schematic diagram of the high pair connection between the first swing arm and the first connecting block in an embodiment of the present application;

[0071] Fig. 14B shows a schematic diagram of the high pair connection between the first swing arm and the first connecting block in an embodiment of the present application;

[0072] Fig. 14C shows a schematic diagram of the high pair connection between the first swing arm and the first connecting block in an embodiment of the present application;

[0073] Fig. 15A shows a sectional view of the door panel and the first connecting block along the B-B section in Fig. 3A in an embodiment of the present application;

[0074] Fig. 15B shows a sectional view of the door panel and the first connecting block along the B-B section in Fig. 3A in an embodiment of the present application;

[0075] Fig. 16A shows an assembly diagram of the high pair connection between the third swing arm and the door panel in a rotating shaft mechanism in an embodiment of the present application;

[0076] Fig. 16B shows an exploded diagram of the high pair connection between the third swing arm and the door panel in a rotating shaft mechanism in an embodiment of the present application;

[0077] Fig. 17A shows a perspective view of a rotating shaft mechanism in further embodiments of the present application;

[0078] Fig. 17B shows an exploded diagram of a rotating shaft mechanism in further embodiments of the present application;

[0079] Fig. 18A shows a schematic diagram of the high pair connection between the first swing arm and the door panel in an embodiment of the present application;

[0080] Fig. 18B shows a schematic diagram of the high pair connection between the first swing arm and the door panel in an embodiment of the present application;

[0081] Fig. 18C shows a schematic diagram of the high pair connection between the first swing arm and the door panel in an embodiment of the present application;

[0082] Fig. 19A shows a perspective view of a rotating shaft mechanism in yet further embodiments of the present application;

[0083] Fig. 19B shows an exploded diagram of a rotating shaft mechanism in yet further embodiments of the present application;

[0084] Fig. 20A shows a schematic diagram of the high pair connection between the second swing arm and the door panel in an embodiment of the present application;

[0085] Fig. 20B shows a schematic diagram of the high pair connection between the second swing arm and the door panel in an embodiment of the present application;

[0086] Fig. 20C shows a schematic diagram of the high pair connection between the second swing arm and the door panel in an embodiment of the present application;

[0087] FIG. 21A shows a perspective view of a hinge mechanism in some embodiments of the present application;

[0088] FIG. 21B shows an exploded view of a hinge mechanism in some embodiments of the present application;

[0089] FIG. 22A shows a schematic diagram of a virtual axis connection between a third swing arm and a hinge base in an embodiment of the present application;

[0090] FIG. 22B shows a schematic diagram of a virtual axis connection between a third swing arm and a hinge base in an embodiment of the present application. DETAILED DESCRIPTION

[0091] To make the objects, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and should not be used to limit the present application.

[0092] Embodiments of the present application are used to provide a hinge mechanism and a foldable electronic device. The foldable electronic device provided by the embodiments of the present application includes but is not limited to a foldable mobile phone, a tablet personal computer, an electronic book reader, a laptop computer, a personal digital assistant (PDA), a personal computer, a notebook computer, a vehicle-mounted device, a wearable device, and other electronic devices including a hinge mechanism.

[0093] For the convenience of description, the foldable electronic device is taken as a foldable mobile phone for example in the following description. In addition, for the convenience of description, a state of the foldable mobile phone after being folded is defined as a folded state, and a state of the foldable mobile phone after being unfolded is defined as an unfolded state.

[0094] FIGS. 1A and 1B show an exemplary structure of a foldable mobile phone 1 in an embodiment of the present application, wherein FIG. 1A is a perspective view of the foldable mobile phone 1 in an unfolded state, and FIG. 1B is a perspective view of the foldable mobile phone 1 in a folded state.

[0095] For the convenience of subsequent description, before introducing the specific structure of the folding mobile phone 1, the X-axis direction, the Y-axis direction and the Z-axis direction corresponding to the folding mobile phone 1 are defined in combination with FIG. 1A. As shown in FIG. 1A, the X-axis direction is the length direction when the folding mobile phone 1 is in the unfolded state, for example, the direction from the bottom to the top when the folding mobile phone 1 is in the unfolded state is the positive direction of the X-axis; the Y-axis direction is the width direction when the folding mobile phone 1 is in the unfolded state, for example, the direction from the left side to the right side when the folding mobile phone 1 is in the unfolded state is the positive direction of the Y-axis; the Z-axis direction is the thickness direction when the folding mobile phone 1 is in the unfolded state, for example, the direction from the front to the back when the folding mobile phone 1 is in the unfolded state is the positive direction of the Z-axis. In some embodiments of the present application, the X-axis direction, the Y-axis direction and the Z-axis direction intersect with each other. In some implementations, the X-axis direction, the Y-axis direction and the Z-axis direction can be perpendicular to each other.

[0096] Referring to FIGS. 1A and 1B, the folding mobile phone 1 includes a first housing 10, a second housing 20, a hinge mechanism 30 and a screen 40. Among them, along the Y-axis direction, the first housing 10 and the second housing 20 are respectively arranged on the opposite sides of the hinge mechanism 30 and are respectively connected with the hinge mechanism 30 to realize the rotational connection of the first housing 10 and the second housing 20. The screen 40 is fixed on the first housing 10, the second housing 20 and the hinge mechanism 30. Exemplarily, the first housing 10, the second housing 20 and the hinge mechanism 30 are covered by the screen 40. The first housing 10 and the second housing 20 can realize relative rotation through the hinge mechanism 30 and can drive the screen 40 to unfold or fold, thereby enabling the folding mobile phone 1 to switch between the unfolded state shown in FIG. 1A and the folded state shown in FIG. 1B.

[0097] When the folding mobile phone 1 is in the unfolded state, the included angle between the first housing 10 and the second housing 20 can be in the range of 178°-182°, for example, and exemplarily, the included angle can be 180°, that is, the unfolding angle of the folding mobile phone 1 is 180°. The first housing 10 and the second housing 20 are arranged side by side along the Y-axis direction, the screen 40 is unfolded like a "one" character and can perform full-screen display, thereby enabling the folding mobile phone 1 to have a larger display area to improve the viewing experience and operation experience of the user.

[0098] When the folding mobile phone 1 is in the folded state, the included angle between the first housing 10 and the second housing 20 can be in the range of 0°-2°, for example, and exemplarily, the included angle can be 0°, the first housing 10 and the second housing 20 are arranged in a stacked manner, and the screen 40 is folded like a "U" shape, thereby enabling the folding mobile phone 1 to have a smaller planar size, which is convenient for the user to carry and store.

[0099] In some technical solutions, the hinge mechanism can realize the rotation of the first housing and the second housing through a one-segment swing arm.

[0100] Specifically, FIG. 2A and FIG. 2B show an exemplary structure of the hinge mechanism 30' in some embodiments, where FIG. 2A is a folding state of the folding mobile phone 1 in which the hinge mechanism 30' is located, and FIG. 2B is a flattened state of the folding mobile phone 1 in which the hinge mechanism 30' is located.

[0101] Referring to FIG. 2A and FIG. 2B, the hinge mechanism 30' includes a hinge base 300 and a main swing arm 310'. The main swing arm 310' is arranged on the hinge base 300. One end of the main swing arm 310' is connected to the hinge base 300 and can rotate relative to the hinge base 300, and the other end of the main swing arm 310' is connected to the first housing 10. In this way, the main swing arm 310' can drive the first housing 10 to rotate around the hinge base 300 in the process of rotation. Similarly, the second housing 20 can be rotationally connected to the hinge base 300 through another main swing arm 310', and the connection between the second housing 20 and the hinge mechanism 30' can refer to the connection between the first housing 10 and the hinge mechanism 30', which will not be described here. It can be understood that FIG. 2A and FIG. 2B only schematically show part of the structure of the first housing 10 and the second housing 20.

[0102] It is worth noting that since the main swing arm 310' is a one-segment swing arm, the rotation angle of the main swing arm 310' needs to be relatively large to ensure that the folding mobile phone 1 can be flattened to a suitable angle. For example, the rotation angle of the main swing arm 310' needs to be set to 90°-110°, and an exemplary rotation angle can be 100°, that is, the rotation angle of the hinge mechanism 30' reaches 100°, so that the rotation angles of the first housing 10 and the second housing 20 respectively reach 90°, and the folding mobile phone 1 is rotated to the flattened state. Referring to FIG. 2A, the rotation angle of the main swing arm 310' can refer to the inclination angle of the main swing arm 310' relative to the Z-axis direction.

[0103] In order to avoid interference between the one-segment main swing arm 310' and the screen 40 in the folding state of the folding mobile phone 1, for example, the main swing arm 310' extrudes the screen 40 along the Y-axis direction, the main swing arm 310' is usually formed with a relief area S1 which is shaped like the screen 40 in the folding state to avoid the screen 40 in the folding state.

[0104] When the main swing arm 310' rotates from the state shown in FIG. 2A to the state shown in FIG. 2B, the top surface 311' of the avoidance area S1 in the main swing arm 310' is at a lower position relative to the top surface 3000 of the rotating shaft base 300 in the Z-axis direction, and thus a hole G1 is formed between the avoidance area S1 and the screen 40. At this time, due to the existence of the hole G1, the main swing arm 310' cannot support the screen 40 at the avoidance area S1. In the area where the rotating shaft mechanism 30' is located, the support surface for supporting the screen 40 only includes the top surface 3000 of the rotating shaft base 300, and the rotating shaft mechanism 30' has insufficient support for the screen 40, which further leads to poor impact resistance of the area where the rotating shaft mechanism 30' is located in the unfolded state, and the screen 40 area above the hole G1 is prone to damage.

[0105] To solve the above problems, the present application provides a rotating shaft mechanism for a foldable electronic device. Compared with the above rotating shaft mechanism, the rotating shaft mechanism provided by the present application connects the rotating shaft base and the shell (for example, the above first shell or second shell) through a two-segment swing arm. Specifically, the rotating shaft mechanism includes a first swing arm and a second swing arm connected in rotation, and the first swing arm and the second swing arm together constitute a two-segment swing arm. Among them, the first swing arm is connected with the rotating shaft base, and the second swing arm is connected with the shell. In this way, the rotation angle of the one-segment swing arm relative to the rotating shaft base in the above rotating shaft mechanism can be divided into the rotation angle of the first swing arm relative to the rotating shaft base and the rotation angle of the second swing arm relative to the first swing arm, thereby effectively reducing the rotation angle of a single swing arm, and further reducing or even avoiding the avoidance of the swing arm to the screen. When the folding mobile phone is in the unfolded state, there is no hole between the first swing arm, the second swing arm and the screen, and the first swing arm and the second swing arm can both support the screen, thereby effectively improving the impact resistance of the area where the rotating shaft mechanism is located in the unfolded state.

[0106] The technical solutions of the present application will be described in detail below with reference to the drawings.

[0107] FIGS. 3A and 3B show an exemplary structure of the rotating shaft mechanism 30A in an embodiment of the present application, wherein FIG. 3A is a perspective view of the rotating shaft mechanism 30A in the unfolded state, and FIG. 3B is an exploded view of the rotating shaft mechanism 30A in the unfolded state, wherein the assembly relationship of the components in the rotating shaft mechanism 30A is schematically shown by dashed arrows.

[0108] Referring to FIGS. 3A and 3B, the rotating shaft mechanism 30A includes a rotating shaft base 300, a first swing arm 310 and a second swing arm 320. One end of the first swing arm 310 is connected with the rotating shaft base 300, and the other end is connected with one end of the second swing arm 320. The other end of the second swing arm 320 is used to be connected with the shell of the folding mobile phone 1. Among them, the first swing arm 310 and the second swing arm 320 together constitute a two-segment swing arm.

[0109] In this embodiment, the rotating shaft mechanism 30A includes at least two sets of two-segmented swing arms composed of the first swing arm 310 and the second swing arm 320. The two sets of two-segmented swing arms are respectively arranged on opposite sides of the rotating shaft base 300 and are respectively used for connecting the first housing 10 and the second housing 20 of the folding mobile phone 1. In some implementations, the rotating shaft mechanism 30A further includes the first connecting block 100 and the second connecting block 200. One set of two-segmented swing arms can be connected to the first housing 10 through the first connecting block 100, and the other set of two-segmented swing arms can be connected to the second housing 20 through the second connecting block 200.

[0110] In other embodiments, the rotating shaft mechanism 30A can also include a set of two-segmented swing arms for connecting the first housing 10 or the second housing 20, which is not specifically limited in the present application. For the sake of brevity, the following will mainly introduce the technical solutions of the present application with the two-segmented swing arms connected to the first housing 10. It can be understood that only part of the structure of the first housing 10 and the second housing 20 is schematically shown in each figure herein, which does not constitute a limitation on the present application.

[0111] The rotation axes of the first swing arm 310 and the second swing arm 320 are parallel to each other. For example, the first swing arm 310 can rotate relative to the rotating shaft base 300 about an axis extending along the X-axis direction; the second swing arm 320 can rotate relative to the first swing arm 310 about an axis extending along the X-axis direction. Moreover, the rotation axes of the first swing arm 310 and the second swing arm 320 are perpendicular to the thickness direction (for example, the Z-axis direction) of the rotating shaft base 300. It can be understood that the mutual parallel in the present application is not absolute parallel, and the approximate parallel caused by processing errors and assembly errors is also within the scope of the mutual parallel in the present application. For example, when the included angle between two structural features is less than or equal to 2° (for example, 0.1°, 0.2°, 1°, 2°, etc.), it can be considered as mutual parallel. The mutual perpendicular in the present application is also not absolute perpendicular, and the approximate perpendicular caused by processing errors and assembly errors, for example, when the included angle between two structural features is 88°-92° (for example, 88°, 89°, 91°, 92°, etc.), it can be considered as mutual perpendicular. The mutual parallel and mutual perpendicular will not be repeatedly described hereinafter.

[0112] Through the rotation of the first swing arm 310 and the second swing arm 320, the folding mobile phone 1 can be arbitrarily switched between the folded state and the unfolded state.

[0113] Specifically, FIGS. 4A and 4B show the cross-sectional view of the rotating shaft mechanism 30A along the A-A section in FIG. 3A. FIG. 4A is the folded state of the folding mobile phone 1 in which the rotating shaft mechanism 30A is located, and FIG. 4B is the unfolded state of the folding mobile phone 1 in which the rotating shaft mechanism 30A is located.

[0114] Referring to FIGS. 4A and 4B in combination with FIGS. 3A and 3B, in the process of switching the folding mobile phone 1 from the folded state to the unfolded state, the first swing arm 310 can rotate relative to the rotating shaft base 300 about an axis extending along the X-axis direction (e.g., the direction perpendicular to the paper in FIGS. 4A and 4B), and the second swing arm 320 can rotate relative to the first swing arm 310 about an axis extending along the X-axis direction. The rotation of the first swing arm 310 and the second swing arm 320 collectively provides a rotation stroke for the first housing 10, so that the first housing 10 can be rotated to a predetermined position. For example, in some implementations, in the process of rotating the rotating shaft mechanism 30A from the second state (e.g., the state shown in FIG. 4A) to the first state (e.g., the state shown in FIG. 4B), the first swing arm 310 and the second swing arm 320 can simultaneously rotate about the axis extending along the X-axis direction, thereby driving the first housing 10 to rotate from the position shown in FIG. 4A to the position shown in FIG. 4B, and thus enabling the folding mobile phone 1 to switch from the folded state shown in FIG. 4A to the unfolded state shown in FIG. 4B. For another example, in some other implementations, in the process of rotating the rotating shaft mechanism 30A from the second state (e.g., the state shown in FIG. 4A) to the first state (e.g., the state shown in FIG. 4B), the first swing arm 310 can first rotate about the axis extending along the X-axis direction, thereby driving the first housing 10 to rotate through a first rotation stroke, and the first swing arm 310 is relatively stationary during the rotation; then, the second swing arm 320 rotates relative to the first swing arm 310 about the axis along the X-axis direction to drive the first housing 10 to rotate through a second rotation stroke, and finally the first housing 10 is rotated from the position shown in FIG. 4A to the position shown in FIG. 4B, and thus enabling the folding mobile phone 1 to switch from the folded state shown in FIG. 4A to the unfolded state shown in FIG. 4B.

[0115] In the above implementations, the first swing arm 310 includes a first support surface F1, and the second swing arm 320 includes a second support surface F2, and the first support surface F1 and the second support surface F2 can reliably support the screen 40 when the folding mobile phone 1 is in the unfolded state, so as to ensure the impact resistance of the area where the rotating shaft mechanism 30A is located in the unfolded state. Details are described below.

[0116] Referring to FIG. 4A, in the embodiment, when the pivot mechanism 30A is in the second state, the folding mobile phone 1 is in the folded state. At this time, the second support surface F2 of the second swing arm 320 is located on the side of the first swing arm 310 away from the screen 40. It can also be understood that the second support surface F2 of the second swing arm 320 is farther away from the screen 40 than the first support surface F1 of the first swing arm 310. However, the present application is not limited to this, and when the pivot mechanism 30A is in the second state, the first support surface F1 and the second support surface F2 can also have other forms of relative positions, for example, in other embodiments, when the pivot mechanism 30A is in the second state, the second support surface F2 can also be located on the side of the first support surface F1 facing the screen 40. For example, in other embodiments, when the pivot mechanism 30A is in the second state, the second support surface F2 can also be partially located on the side of the first support surface F1 facing the screen 40 and partially located on the side of the first support surface F1 away from the screen 40.

[0117] At this time, the folding mobile phone 1 is in the folded state. Since the pivot mechanism 30A provides the first housing 10 with a rotation stroke through the first swing arm 310 and the second swing arm 320 together, rather than through one swing arm, the rotation angles of the first swing arm 310 and the second swing arm 320 can be set relatively small. For example, the rotation angle of the first swing arm 310 relative to the pivot base 300 can be 70°, and the rotation angle of the second swing arm 320 relative to the first swing arm 310 can be 30°. In this way, the rotation angle of the pivot mechanism 30A can reach 100°, and the rotation angle of the first housing 10 can reach 90°.

[0118] Compared with the one-section main swing arm 310' in the scheme shown in FIGS. 2A and 2B, the first swing arm 310 has a smaller rotation angle. Therefore, the first swing arm 310 is less likely to interfere with the screen 40 in the folded state. For example, comparing FIGS. 2A and 4A, when the folding mobile phone 1 is in the folded state, the angle between the first swing arm 310 and the Y-axis direction (for example, the angle a between the first supporting surface F1 of the first swing arm 310 and the Y-axis direction) is smaller than the angle between the main swing arm 310' and the Y-axis direction (for example, the angle b between the top surface 311' of the avoidance area S1 of the main swing arm 310' and the Y-axis direction). For another example, comparing FIGS. 2B and 4B, when the folding mobile phone 1 is in the unfolded state, the angle between the first swing arm 310 and the Z-axis direction (for example, the angle l between the first supporting surface F1 of the first swing arm 310 and the Z-axis direction) is smaller than the angle between the main swing arm 310' and the Z-axis direction (for example, the angle q between the top surface 311' of the avoidance area S1 of the main swing arm 310' and the Z-axis direction). Thus, the first swing arm 310 can be prevented from interfering with the screen 40. Therefore, the first supporting surface F1 of the first swing arm 310 does not need to be provided with an avoidance area to avoid the screen 40, so that the first supporting surface F1 can provide reliable support to the screen 40 in the unfolded state without any hole (for example, the hole G1 in the scheme shown in FIG. 2B) between the first supporting surface F1 and the screen 40.

[0119] Meanwhile, since the second supporting surface F2 of the second swing arm 320 can be arranged far away from the screen 40, the second supporting surface F2 of the second swing arm 320 also does not need to be provided with an avoidance area to avoid the screen 40, so that the second supporting surface F2 can provide reliable support to the screen 40 in the unfolded state without any hole (for example, the hole G1 in the scheme shown in FIG. 2B) between the second supporting surface F2 and the screen 40.

[0120] Referring to FIG. 4B, when the pivot mechanism 30A is in the first state, the first supporting surface F1 and the second supporting surface F2 are coplanar. Moreover, the first supporting surface F1 and the second supporting surface F2 are both perpendicular to the thickness direction of the pivot base 300 (for example, the Z-axis direction in FIG. 4B). It can be understood that the coplanar in the present application is not an absolute coplanar, and the approximate coplanar caused by processing errors and assembly errors is also within the range of the coplanar in the present application. For example, the first supporting surface F1 and the second supporting surface F2 can be approximately parallel and substantially in the same plane. That is, the first supporting surface F1 and the second supporting surface F2 can have a certain range of angles therebetween. Alternatively, the first supporting surface F1 and the second supporting surface F2 can have a certain spacing therebetween.

[0121] At this time, the folding mobile phone 1 is in the unfolded state, and the screen 40 is arranged perpendicularly to the thickness direction (for example, the Z direction in FIG. 4B) of the rotating shaft base 300. The first support surface F1 and the second support surface F2 are arranged opposite to the screen 40 along the Z direction, respectively. As described above, since there is no need to arrange the avoidance area on the first support surface F1 of the first swing arm 310 and the second support surface F2 of the second swing arm 320, there is no hole (for example, the hole G1 in the scheme shown in FIG. 2B) between the first support surface F1 of the first swing arm 310 and the screen 40 and between the second support surface F2 of the second swing arm 320 and the screen 40. The first swing arm 310 and the second swing arm 320, which are parallel to each other, can reliably support the screen 40, thereby effectively improving the impact resistance of the area where the rotating shaft mechanism 30A is located in the unfolded state.

[0122] In summary, compared with the rotating shaft mechanism 30' including the one-section main swing arm 310' shown in FIGS. 2A and 2B, the rotating shaft mechanism 30A provided in the present application can effectively avoid the problem that there is a hole between the swing arm and the screen 40 when the folding mobile phone 1 is in the unfolded state, thereby improving the impact resistance of the area where the rotating shaft mechanism 30A is located in the unfolded state.

[0123] The specific structure and mounting mode of each component in the rotating shaft mechanism 30A will be described in detail below with reference to the accompanying drawings.

[0124] In some embodiments of the present application, the rotating shaft base 300 and the first swing arm 310 of the rotating shaft mechanism 30A can be rotatably connected through the circular-arc-shaped groove and the circular-arc-shaped sliding part matched with each other. That is, the rotatable connection between the rotating shaft base 300 and the first swing arm 310 is a virtual shaft connection, that is, the rotating shaft base 300 and the first swing arm 310 are not connected through a solid rotating shaft.

[0125] FIGS. 5A to 5C show the schematic diagrams of the rotatable connection between the rotating shaft base 300 and the first swing arm 310 in the embodiments of the present application. FIG. 5A is an assembly view of the rotating shaft base 300 and the first swing arm 310, FIG. 5B is an exploded view of the rotating shaft base 300 and the first swing arm 310, wherein the assembly relationship between the rotating shaft base 300 and the first swing arm 310 is shown by the dashed arrow in FIG. 5B, and FIG. 5C is a schematic diagram of the rotation of the first swing arm 310 relative to the rotating shaft base 300.

[0126] Referring to FIGS. 5A-5C, the rotating shaft base 300 includes a first circular-arc-shaped slot 301. An axis L1 of the first circular-arc-shaped slot 301 extends along the X-axis direction. The extending direction of the first circular-arc-shaped slot 301 may, for example, be the N1 direction in FIG. 5B. The shape of the cross section of the first circular-arc-shaped slot 301 can be U-shaped. It can be understood that, in the present application, the cross section of each component refers to a plane perpendicular to the extending direction of the component, and the cross-sectional shape refers to the shape obtained after the component is cut along the cross section, which will not be described again below. The first circular-arc-shaped slot 301 includes a first slot wall 3011 and a second slot wall 3012. The first slot wall 3011 and the second slot wall 3012 are arranged in a radial direction of the first circular-arc-shaped slot 301 (a direction perpendicular to the X-axis direction, for example, the Z-axis direction or the Y-axis direction). The space between the first slot wall 3011 and the second slot wall 3012 forms an inner cavity of the first circular-arc-shaped slot 301.

[0127] The first swing arm 310 includes a first circular-arc-shaped sliding portion 311. An axis L2 of the first circular-arc-shaped sliding portion 311 extends along the X-axis direction. The extending direction of the first circular-arc-shaped sliding portion 311 may, for example, be the N1 direction in FIG. 5B. Exemplarily, the shape of the front projection of the first circular-arc-shaped sliding portion 311 in the YZ plane can be similar to a semicircular ring shape. The first circular-arc-shaped sliding portion 311 is arranged in the first circular-arc-shaped slot 301, for example, the first circular-arc-shaped sliding portion 311 is inserted in the first circular-arc-shaped slot 301 along the X-axis direction, at this time, the axis L1 of the first circular-arc-shaped slot 301 coincides with the axis L2 of the first circular-arc-shaped sliding portion 311. Alternatively, along the radial direction of the first circular-arc-shaped slot 301, the first circular-arc-shaped sliding portion 311 is located between the first slot wall 3011 and the second slot wall 3012 of the first circular-arc-shaped slot 301. The first circular-arc-shaped sliding portion 311 can slide relative to the first slot wall 3011 and the second slot wall 3012 of the first circular-arc-shaped slot 301, so that the first circular-arc-shaped sliding portion 311 can rotate relative to the first circular-arc-shaped slot 301 about an axis extending along the X-axis direction, and further so that the first swing arm 310 can rotate relative to the rotating shaft base 300 about an axis extending along the X-axis direction.

[0128] Continuing to refer to FIG. 5B, in some embodiments of the present application, the first swing arm 310 can include two first circular-arc-shaped sliding portions 311, which are arranged in the X-axis direction. Correspondingly, the number of the first circular-arc-shaped slots 301 can also be two, and each of the first circular-arc-shaped slots 301 corresponds to a first circular-arc-shaped sliding portion 311. Each of the first circular-arc-shaped slots 301 is inserted in the corresponding first circular-arc-shaped sliding portion 311. In this way, the connection reliability between the rotating shaft base 300 and the first swing arm 310 can be further improved.

[0129] Exemplarily, as shown in FIG. 5B, the first swing arm 310 comprises a main body 3100. The main body 3100 comprises a first outer side 3101 and a second outer side 3102 oppositely arranged along the X-axis direction, and a first inner side 3103 and a second inner side 3104 oppositely arranged along the X-axis direction. Two first circular-arc sliding parts 311 are respectively arranged on the first outer side 3101 and the second outer side 3102. The two first circular-arc sliding parts 311 are oppositely arranged along the X-axis direction. Correspondingly, one of the two first circular-arc sliding parts 311 is arranged on the surface of the rotation shaft base 300 and the first outer side 3101 oppositely arranged along the X-axis direction, and the other is arranged on the surface of the rotation shaft base 300 and the second outer side 3102 oppositely arranged along the X-axis direction.

[0130] Alternatively, in some other alternative embodiments, the two first circular-arc sliding parts 311 can also be respectively arranged on the first inner side 3103 and the second inner side 3104, and the two first circular-arc sliding parts 311 are oppositely arranged along the X-axis direction. Correspondingly, the positions of the two first circular-arc grooves 301 can also be adaptively adjusted. The present application does not limit the layout mode of the first circular-arc groove 301 and the first circular-arc sliding part 311, as long as the rotational connection between the first circular-arc groove 301 and the first circular-arc sliding part 311 can be realized.

[0131] It can be understood that the present application also does not specifically limit the number of the first circular-arc groove 301 and the first circular-arc sliding part 311, as long as the rotational connection between the rotation shaft base 300 and the first swing arm 310 can be realized. For example, the number of the first circular-arc groove 301 can be one, the number of the first circular-arc sliding part 311 can be two, and the two first circular-arc sliding parts 311 share one first circular-arc groove 301.

[0132] In addition, it can be understood that the above-mentioned embodiments are introduced by taking the rotation shaft base 300 comprising the first circular-arc groove 301 and the first swing arm 310 comprising the first circular-arc sliding part 311 as an example. In some other embodiments, the rotation shaft base 300 can comprise the first circular-arc sliding part 311 and the first swing arm 310 can comprise the first circular-arc groove 301.

[0133] In some embodiments of the present application, the rotation shaft base 300 and the first swing arm 310 of the rotation shaft mechanism 30A can be connected by a rotation shaft. That is, the rotation connection between the rotation shaft base 300 and the first swing arm 310 is a real shaft connection. For example, a first rotation shaft hole is formed in the first swing arm 310, the first rotation shaft hole extends along the X direction and penetrates the first connecting block 100, and two second rotation shaft holes are formed in the rotation shaft base 300. A rotation shaft is arranged in the first rotation shaft hole along the X direction, and the two ends of the rotation shaft are arranged in the second rotation shaft holes, thereby realizing the rotation connection between the first swing arm 310 and the rotation shaft base 300.

[0134] After introducing the implementation mode of the rotation connection between the rotation shaft base 300 and the first swing arm 310 of the rotation shaft mechanism 30A, the implementation mode of the rotation connection between the first swing arm 310 and the second swing arm 320 will be introduced below in combination with the accompanying drawings.

[0135] In some embodiments of the present application, the first swing arm 310 and the second swing arm 320 of the rotation shaft mechanism 30A can also be connected by a circular-arc-shaped groove and a circular-arc-shaped sliding part matched with each other.

[0136] FIGS. 6A to 6C show the schematic diagrams of the rotation connection between the first swing arm 310 and the second swing arm 320 in the embodiments of the present application, wherein FIG. 6A is an assembly view of the first swing arm 310 and the second swing arm 320, FIG. 6B is an exploded view of the first swing arm 310 and the second swing arm 320, and FIG. 6C is a schematic diagram of the rotation of the second swing arm 320 relative to the first swing arm 310.

[0137] Referring to FIGS. 6A to 6C, the first swing arm 310 includes a second circular-arc-shaped groove 312. The second swing arm 320 includes a second circular-arc-shaped sliding part 321. The axis of the second circular-arc-shaped groove 312 and the second circular-arc-shaped sliding part 321 extends along the X direction, and the extending direction of the second circular-arc-shaped groove 312 and the second circular-arc-shaped sliding part 321 can be, for example, the N2 direction in FIG. 6B. The second circular-arc-shaped sliding part 321 is arranged in the second circular-arc-shaped groove 312, for example, the second circular-arc-shaped sliding part 321 is inserted in the second circular-arc-shaped groove 312 along the X direction. Or, along the radial direction (the direction perpendicular to the X direction, for example, the Z direction or the Y direction) of the second circular-arc-shaped groove 312, the second circular-arc-shaped sliding part 321 is located between the two groove walls of the second circular-arc-shaped groove 312. The second circular-arc-shaped sliding part 321 can slide relative to the two groove walls of the second circular-arc-shaped groove 312, so that the second circular-arc-shaped sliding part 321 can rotate relative to the second circular-arc-shaped groove 312 about the axis extending along the X direction, thereby enabling the second swing arm 320 to rotate relative to the first swing arm 310 about the axis extending along the X direction.

[0138] The structure and arrangement of the second arc-shaped slot 312 and its variants can refer to the description of the first arc-shaped slot 301 in the foregoing embodiments shown in FIGS. 5A-5C. The structure and arrangement of the second arc-shaped sliding part 321 and its variants can refer to the description of the first arc-shaped sliding part 311 in the foregoing embodiments shown in FIGS. 5A-5C.

[0139] For example, in some embodiments of the present application, the first swing arm 310 can include two second arc-shaped slots 312, which are arranged substantially the same as the two first arc-shaped slots 301 in the foregoing example shown in FIGS. 5A-5C. Therefore, the description of the first arc-shaped slot 301 can be referred to, and will not be repeated here. Correspondingly, the second swing arm 320 can include two second arc-shaped sliding parts 321, which are arranged substantially the same as the two first arc-shaped sliding parts 311 in the foregoing example shown in FIGS. 5A-5C. Therefore, the description of the first arc-shaped sliding part 311 can be referred to, and will not be repeated here.

[0140] In some embodiments of the present application, the first swing arm 310 and the second swing arm 320 can be rotatably connected by a rotating shaft. For example, the first swing arm 310 is provided with a first rotating shaft hole extending along the X direction and penetrating through the first connecting block 100, and the second swing arm 320 is provided with two second rotating shaft holes. The rotating shaft is arranged in the first rotating shaft hole along the X direction, and the two ends of the rotating shaft are arranged in the second rotating shaft holes, thereby achieving the rotatable connection between the first swing arm 310 and the second swing arm 320.

[0141] After introducing the connection between the swing arms in the rotating shaft mechanism 30A, the connection between the swing arms of the rotating shaft mechanism 30A and the first shell 10 will be introduced below in combination with the accompanying drawings.

[0142] As described above, in some embodiments of the present application, the rotating shaft mechanism 30A further includes a first connecting block 100. The second swing arm 320 can be connected to the first shell 10 through the first connecting block 100.

[0143] In some implementations, the second swing arm 320 of the rotating shaft mechanism 30A can be rotatably connected to the first connecting block 100. The first connecting block 100 is fixedly connected (e.g., bonded, clamped, fastened, or welded) to the first shell 10.

[0144] FIGS. 7A-7C show schematic diagrams of the rotation connection between the second swing arm 320 and the first connecting block 100 in the embodiment of the present application, wherein FIG. 7A is an assembly view of the second swing arm 320 and the first connecting block 100, FIG. 7B is an exploded view of the second swing arm 320 and the first connecting block 100, and FIG. 7C is a schematic diagram of the rotation of the first connecting block 100 relative to the second swing arm 320.

[0145] Referring to FIGS. 7A-7C, the rotation connection between the second swing arm 320 and the first connecting block 100 can also be achieved by the circular-arc-shaped groove and the circular-arc-shaped sliding part that cooperate with each other.

[0146] Specifically, the second swing arm 320 includes a third circular-arc-shaped groove 322. The first connecting block 100 is provided with a third circular-arc-shaped sliding part 110. The axis of the third circular-arc-shaped groove 322 and the third circular-arc-shaped sliding part 110 both extend along the X-axis direction, and the extending direction of the third circular-arc-shaped groove 322 and the third circular-arc-shaped sliding part 110 can be, for example, the N3 direction in FIG. 7B. The third circular-arc-shaped sliding part 110 is arranged in the third circular-arc-shaped groove 322, for example, the third circular-arc-shaped sliding part 110 is inserted in the third circular-arc-shaped groove 322. Alternatively, along the radial direction of the third circular-arc-shaped groove 322 (a direction perpendicular to the X-axis direction, for example, the Z-axis direction or the Y-axis direction), the third circular-arc-shaped sliding part 110 is located between the two groove walls of the third circular-arc-shaped groove 322. The third circular-arc-shaped sliding part 110 can slide relative to the two groove walls of the third circular-arc-shaped groove 322, so that the third circular-arc-shaped sliding part 110 can rotate relative to the third circular-arc-shaped groove 322 about the axis extending along the X-axis direction, and thus the first connecting block 100 can rotate relative to the second swing arm 320 about the axis extending along the X-axis direction, and drive the first housing (not shown in the figure) to rotate relative to the second swing arm 320 about the axis extending along the X-axis direction.

[0147] The structure, arrangement and deformation of the third circular-arc-shaped groove 322 can refer to the foregoing description of the first circular-arc-shaped groove 301 in the example shown in FIGS. 5A-5C, and the structure, arrangement and deformation of the third circular-arc-shaped sliding part 110 can refer to the foregoing description of the first circular-arc-shaped sliding part 311 in the example shown in FIGS. 5A-5C.

[0148] For example, in some embodiments of the present application, the second swing arm 320 can include two third circular-arc-shaped grooves 322, which are arranged in a manner substantially the same as the two first circular-arc-shaped grooves 301 in the example shown in FIGS. 5A-5C, and thus reference can be made to the above description of the first circular-arc-shaped grooves 301, which will not be repeated here. Correspondingly, the second swing arm 320 can include two third circular-arc-shaped sliding portions 110, which are arranged in a manner substantially the same as the two first circular-arc-shaped sliding portions 311 in the example shown in FIGS. 5A-5C, and thus reference can be made to the above description of the first circular-arc-shaped sliding portions 311, which will not be repeated here.

[0149] In some alternative implementations, the second swing arm 320 and the first connecting block 100 can also be rotationally connected by a rotation shaft. For example, a first rotation shaft hole can be formed in the first connecting block 100, the first rotation shaft hole extends along the X direction and penetrates through the first connecting block 100, and two second rotation shaft holes can be formed in the second swing arm 320. A rotation shaft is arranged in the first rotation shaft hole along the X direction, and the two ends of the rotation shaft are arranged in the second rotation shaft holes of the second swing arm 320, thereby rotationally connecting the second swing arm 320 and the first connecting block 100.

[0150] In some embodiments of the present application, the second swing arm 320 of the rotation shaft mechanism 30A can also be slidingly connected to the first connecting block 100. For example, a linear sliding groove can be formed in the first connecting block 100, and the second swing arm 320 can include a linear sliding block arranged in the sliding groove and capable of sliding relative to the sliding groove, thereby enabling the first connecting block 100 to slide relative to the second swing arm 320.

[0151] It can be understood that the present application does not limit the connection manner between the second swing arm 320 and the first connecting block 100 of the rotation shaft mechanism 30A, as long as the rotation shaft mechanism 30A can drive the first housing 10 to rotate when rotating.

[0152] In order to reduce the extrusion of the screen 40 caused by the rotation shaft base 300 under the impact of external force when the folding mobile phone 1 is in the folded state, in some embodiments of the present application, the first housing 10 and the second swing arm 320 are respectively provided with a stop structure.

[0153] FIG. 8 shows an exemplary arrangement of the first stop structure 121 and the second stop structure 323 in some embodiments of the present application, wherein the force transmission path between the rotation shaft base 300, the second swing arm 320, and the first housing 10 is shown by dashed arrows. Referring to FIG. 8, the first housing 10 is provided with the first stop structure 121. The second swing arm 320 is provided with the second stop structure 323.

[0154] When the folding mobile phone 1 is in the folded state, the first stop structure 121 and the second stop structure 323 cooperate to provide a limit to the second swing arm 320 along the thickness direction (for example, the Z-axis direction) of the rotation shaft mechanism 30A. When the folding mobile phone 1 is in the unfolded state, the first stop structure 121 and the second stop structure 323 are separated.

[0155] Since the first stop structure 121 and the second stop structure 323 are in cooperation when the folding mobile phone 1 is in the folded state. Therefore, when the rotation shaft base 300 of the folding mobile phone 1 in the folded state is impacted by the outside world (for example, when the folding mobile phone 1 falls or collides), the impact force received by the rotation shaft base 300 can be transmitted to the second swing arm 320, and then transmitted to the first stop structure 121 of the first housing 10 through the second stop structure 323 of the second swing arm 320, and then transmitted to the first housing 10. The first housing 10 can provide a limit to the second swing arm 320 along the Z-axis direction, thereby reducing the movement of the second swing arm 320 relative to the first housing 10 along the Z-axis direction, thereby reducing the movement of the rotation shaft base 300 relative to the first housing 10 along the Z-axis direction, and finally reducing the impact of the rotation shaft base 300 on the screen 40, and improving the reliability of the folding mobile phone 1.

[0156] In some embodiments of the present application, the first stop structure 121 is a groove opened on the first housing 10. The second stop structure 323 is a protrusion provided on the second swing arm 320. When the folding mobile phone 1 is switched from the unfolded state shown in FIG. 4B to the folded state shown in FIG. 4A, at least part of the protrusion protrudes relative to the rotation shaft base 300 and the first swing arm 310 towards the first housing 10, and extends into the groove of the first housing 10, thereby realizing the cooperation of the first stop structure 121 and the second stop structure 323.

[0157] Since the first stop structure 121 is a groove opened on the first housing 10, rather than a protrusion provided on the first housing 10. Therefore, it can be avoided that the first stop structure 121 interferes with other components (for example, the rotation shaft base 300) when the first housing 10 rotates.

[0158] In some implementations, a portion of the second stop structure 323 can constitute the second arc-shaped sliding part 321 of the second swing arm 320. For example, as shown in FIG. 6B, the second stop structure 323 can be a solid part located within the rectangular region enclosed by the dashed line. In the X-axis direction, the two ends of the second stop structure 323 constitute two second arc-shaped sliding parts 321, respectively. The middle part of the second stop structure 323 is connected between the two second arc-shaped sliding parts 321. In this case, the second stop structure 323 extends in the X-axis direction, and the cross-sectional shape of the second stop structure 323 is arc-shaped in the N2 direction. Referring to FIG. 8 in combination with FIG. 6B, when the folding mobile phone 1 is in the folded state, at least a portion of the two second arc-shaped sliding parts 321 can pass out of the second arc-shaped groove 312 and extend into the groove of the first housing 10, thereby achieving the cooperation between the first stop structure 121 and the second stop structure 323. Alternatively, in another implementation, the entire second stop structure 323 can constitute the second arc-shaped sliding part 321 of the second swing arm 320. That is, the second stop structure 323 is the second arc-shaped sliding part 321.

[0159] In this way, the second stop structure 323 of the second swing arm 320 can be used to cooperate with both the first stop structure 121 of the first housing 10 and the second arc-shaped groove 312 of the first swing arm 310. Therefore, the second swing arm 320 does not need to be separately designed with two structures to achieve cooperation with the first stop structure 121 and the second arc-shaped groove 312, respectively, thereby effectively simplifying the structure of the second swing arm 320.

[0160] With continued reference to FIGS. 3A and 3B, in order to further improve the reliability of the connection between the hinge mechanism 30A and the housing (e.g., the first housing 10 and the second housing 20) of the folding mobile phone 1, and to make the rotation of the hinge mechanism 30A more stable, in some embodiments of the present application, the hinge mechanism 30A further includes a third swing arm 330. One end of the third swing arm 330 is connected to the hinge base 300, and the other end is connected to the housing of the folding mobile phone 1. The third swing arm 330 can rotate relative to the hinge base 300 about an axis extending in the X-axis direction, thereby driving the housing of the folding mobile phone 1 to rotate relative to the hinge base 300 about an axis extending in the X-axis direction.

[0161] In the present embodiment, the hinge mechanism 30A includes at least two third swing arms 330. In the Y-axis direction, the two third swing arms 330 are respectively arranged on opposite sides of the hinge base 300 and are respectively used to connect the first housing 10 and the second housing 20 of the folding mobile phone 1. In some implementations, one of the third swing arms 330 can be connected to the first housing 10 through the first connecting block 100, and the other third swing arm 330 can be connected to the second housing 20 through the second connecting block 200.

[0162] In other embodiments, the rotating shaft mechanism 30A can also include a third swing arm 330, which is not limited in the present application. For the sake of brevity, the following will mainly introduce the technical solutions of the present application by taking the third swing arm 330 connected with the first housing 10 through the first connecting block 100.

[0163] FIGS. 9A-9C show the connection schematic diagram of the rotating shaft base 300, the third swing arm 330 and the first connecting block 100 in the embodiments of the present application, wherein FIG. 9A is an assembly view of the rotating shaft base 300, the third swing arm 330 and the first connecting block 100, FIG. 9B is an exploded view of the rotating shaft base 300, the third swing arm 330 and the first connecting block 100, and FIG. 9C is a schematic diagram of the third swing arm 330 rotating relative to the rotating shaft base 300.

[0164] Referring to FIGS. 9A-9C, in some embodiments of the present application, the rotating shaft base 300 and the third swing arm 330 are rotatably connected through the rotating shaft 302, that is, the rotating connection between the rotating shaft base 300 and the third swing arm 330 is a real shaft connection.

[0165] Specifically, the rotating shaft base 300 is provided with two first rotating shaft holes 303 extending along the X-axis direction and oppositely arranged along the X-axis direction. The third swing arm 330 is provided with a second rotating shaft hole 331 extending along the X-axis direction and penetrating the third swing arm 330. The rotating shaft 302 is arranged in the second rotating shaft hole 331 along the X-axis direction, and the two ends of the rotating shaft 302 are arranged to penetrate out of the second rotating shaft hole and penetrate into the first rotating shaft hole 303 of the rotating shaft base 300, thereby achieving the rotating connection of the rotating shaft base 300 and the third swing arm 330.

[0166] In other embodiments of the present application, the rotating shaft base 300 and the third swing arm 330 can also be rotatably connected through the circular-arc-shaped groove and the circular-arc-shaped sliding part matched with each other. That is, the rotating connection between the rotating shaft base 300 and the third swing arm 330 can also be a virtual shaft connection. For the sake of continuity, the virtual shaft connection between the rotating shaft base 300 and the third swing arm 330 will be described in detail in the embodiments shown in FIGS. 20A-21B below, and the following will continue to introduce the connection mode between the third swing arm 330 and other components in combination with FIGS. 9A-9C.

[0167] Continuing to refer to FIGS. 9A-9C, in some embodiments of the present application, the third swing arm 330 can be slidably connected with the first connecting block 100.

[0168] Specifically, the first connecting block 100 comprises a sliding groove 130. The sliding groove 130 is a linear sliding groove, and the extending direction thereof may, for example, be the M direction in FIG. 9B. The third swing arm 330 comprises a sliding block 332. The sliding block 332 is a linear wall extending along the M direction. The sliding block 332 is arranged in the sliding groove 130 and can slide along the M direction relative to the sliding groove 130, thereby enabling the first connecting block 100 to slide along the M direction relative to the third swing arm 330.

[0169] In some other embodiments of the present application, the third swing arm 330 can also be rotationally connected with the first connecting block 100.

[0170] In some implementations, the rotationally connecting between the third swing arm 330 and the first connecting block 100 can be realized through a circular-arc-shaped groove and a circular-arc-shaped sliding part that cooperate with each other. The circular-arc-shaped groove can be described with reference to the foregoing description of the first circular-arc-shaped groove 301 in the embodiments shown in FIGS. 5A-5C, and the circular-arc-shaped sliding part can be described with reference to the foregoing description of the first circular-arc-shaped sliding part 311 in the embodiments shown in FIGS. 5A-5C, and thus no further description is provided herein.

[0171] In some other implementations, the rotationally connecting between the third swing arm 330 and the first connecting block 100 can also be realized through a rotation shaft. The specific implementation can be described with reference to the foregoing description of the rotationally connecting between the third swing arm 330 and the rotation shaft base 300 through the rotation shaft 302 in the embodiments shown in FIGS. 9A-9C, and thus no further description is provided herein.

[0172] To ensure that the rotation shaft mechanism 30A has a determined motion trajectory, i.e., the degree of freedom of the rotation shaft mechanism 30A is 1, the third swing arm 330 can also be connected with the second swing arm 320, and the connection between the third swing arm 330 and the second swing arm 320 is a higher pair connection. The higher pair connection can be understood as a sliding and rotating connection, i.e., the third swing arm 330 and the second swing arm 320 have both a sliding connection relationship and a rotating connection relationship.

[0173] In some implementations, the higher pair connection between the second swing arm 320 and the third swing arm 330 can be realized through a pin shaft and a pin shaft groove that cooperate with each other.

[0174] Specifically, FIGS. 10A-10C show schematic diagrams of the higher pair connection between the second swing arm 320 and the third swing arm 330. Referring to FIGS. 10A-10C, the second swing arm 320 comprises a first pin shaft 324. The first pin shaft 324 extends along the X axis direction. The third swing arm 330 comprises a first pin shaft groove 333. Exemplarily, the first pin shaft groove 333 can be a circular-arc-shaped groove, and the extending direction thereof may, for example, be the N4 direction in FIG. 10A. In other embodiments, the first pin shaft groove 333 can also be a linear groove, a broken-line groove, etc., which is not limited in the present application.

[0175] The end of the first pin shaft 324 is inserted into the first pin shaft slot 333 along the X-axis direction. During the rotation of the second swing arm 320 and the third swing arm 330, the first pin shaft 324 and the first pin shaft slot 333 can slide relative to each other. For example, during the rotation of the second swing arm 320 and the third swing arm 330 from the state shown in FIG. 10B to the state shown in FIG. 10C, the first pin shaft 324 can slide from the first end 3331 of the first pin shaft slot 333 to the second end 3332, and at the same time, the first pin shaft 324 and the first pin shaft slot 333 can also rotate relative to each other. In this way, the high pair connection between the second swing arm 320 and the third swing arm 330 can be achieved.

[0176] It can be understood that the above embodiments are introduced by taking the second swing arm 320 including the first pin shaft 324 and the third swing arm 330 including the first pin shaft slot 333 as an example. In other embodiments, the second swing arm 320 can include the first pin shaft slot 333, and the third swing arm 330 can include the first pin shaft 324.

[0177] In addition, it can be understood that the cross-sectional shape of the first pin shaft 324 can be a regular shape such as a circle, a polygon (for example, a pentagon, a hexagon, etc.), an ellipse, or other irregular shapes, and the present application does not make specific limitations thereto, as long as the second swing arm 320 and the third swing arm 330 can rotate relative to each other and slide relative to each other.

[0178] In this way, the degree of freedom of the rotation shaft mechanism 30A can be 1.

[0179] Specifically, the degree of freedom of the rotation shaft mechanism 30A can be calculated based on the following formula (1). F = 3n - 2P L -P H (1);

[0180] In formula (1), F represents the degree of freedom of the rotation shaft mechanism 30A; n represents the number of movable components in the rotation shaft mechanism 30A; P L represents the number of low pair connections (for example, rotational connections or sliding connections) in the rotation shaft mechanism 30A; and P H represents the number of high pair connections in the rotation shaft mechanism 30A.

[0181] In this embodiment, the movable components in the rotating shaft mechanism 30A include the first swing arm 310, the second swing arm 320, the third swing arm 330, and the first connecting block 100 of the rotating shaft mechanism 30A, and thus n = 4; the lower pair connection includes the rotating connection between the rotating shaft base 300 and the first swing arm 310, the rotating connection between the first swing arm 310 and the second swing arm 320, the rotating connection or sliding connection between the second swing arm 320 and the first connecting block 100, the rotating connection between the third swing arm 330 and the rotating shaft base 300, and the rotating connection or sliding connection between the third swing arm 330 and the first connecting block 100, and thus P L = 5; the higher pair connection includes the rotating connection and sliding connection between the second swing arm 320 and the third swing arm 330, and thus P H = 1.

[0182] Substituting n = 4, P L = 5, P H = 1 into the above formula (1), F = 1 can be obtained. That is, the first swing arm 310, the second swing arm 320, the third swing arm 330, and the first connecting block 100 of the rotating shaft mechanism 30A have a determined relative motion, and the rotating shaft mechanism 30A has a determined motion trajectory.

[0183] It should be noted that the above embodiment is an exemplary description of the technical scheme of the present application, and other modifications can be made by those skilled in the art.

[0184] For example, in the rotating shaft mechanism 30A of the above-mentioned embodiments shown in FIGS. 3A and 3B, the higher pair connection is formed between the second swing arm 320 and the third swing arm 330, so that the degree of freedom of the rotating shaft mechanism 30A is 1, thereby ensuring that the rotating shaft mechanism 30A has a determined motion trajectory, but the present application is not limited thereto.

[0185] In some other embodiments of the present application, a higher pair connection can also be formed between other two swing arms in a rotating shaft mechanism (for example, the following rotating shaft mechanism 30B), so that the degree of freedom of the rotating shaft mechanism (for example, the following rotating shaft mechanism 30B) is 1.

[0186] Specifically, FIGS. 11A and 11B show an exemplary structure of the rotating shaft mechanism 30B in some other embodiments of the present application, wherein FIG. 11A is a perspective view of the rotating shaft mechanism 30B in a flattened state, and FIG. 11B is an exploded view of the rotating shaft mechanism 30B in a flattened state. In order to facilitate observation, the door plate 340 is not shown in FIG. 11A, and the assembly relationship of the components in the rotating shaft mechanism 30B is schematically shown by dashed arrows in FIG. 11B.

[0187] Compared with the pivot mechanism 30A shown in FIGS. 3A and 3B, the pivot mechanism 30B shown in FIGS. 11A and 11B is different in that the degree of freedom of the pivot mechanism 30B is limited to 1 by forming a higher pair connection between the first swing arm 310 and the third swing arm 330, which will be described in detail below with reference to the accompanying drawings.

[0188] FIGS. 12A to 12C show schematic diagrams of the higher pair connection between the first swing arm 310 and the third swing arm 330. Referring to FIGS. 12A to 12C in combination with FIGS. 11A and 11B, the first swing arm 310 and the third swing arm 330 are connected, and the connection between the first swing arm 310 and the third swing arm 330 is a higher pair connection. That is, the first swing arm 310 and the third swing arm 330 can relatively slide and relatively rotate.

[0189] In some implementations, the first swing arm 310 and the third swing arm 330 are connected by a higher pair connection through a matched pin shaft and a pin shaft groove. Exemplarily, the first swing arm 310 includes a second pin shaft groove 313. The third swing arm 330 includes a second pin shaft 334. The end of the second pin shaft 334 is inserted into the second pin shaft groove 313. During rotation of the second swing arm 320 and the third swing arm 330, the second pin shaft 334 and the second pin shaft groove 313 can relatively slide. For example, during rotation of the first swing arm 310 and the third swing arm 330 from the state shown in FIG. 12B to the state shown in FIG. 12C, the second pin shaft 334 can slide from one end of the second pin shaft groove 313 to the other end of the second pin shaft groove 313. At the same time, the second pin shaft 334 and the second pin shaft groove 313 can also relatively rotate. In this way, the higher pair connection between the first swing arm 310 and the third swing arm 330 can be achieved.

[0190] The structure, arrangement and variations of the second pin shaft 334 can refer to the description of the first pin shaft 324 in the foregoing embodiments shown in FIGS. 10A to 10C, and the structure, arrangement and variations of the second pin shaft groove 313 can refer to the description of the first pin shaft groove 333 in the foregoing embodiments shown in FIGS. 10A to 10C, which will not be described herein.

[0191] In this way, the degree of freedom of the pivot mechanism 30B can be limited to 1.

[0192] Specifically, referring to the above formula (1) and combining with FIGS. 11A-12C, the movable components in the pivot mechanism 30B include the first swing arm 310, the second swing arm 320, the third swing arm 330, and the first connecting block 100 of the pivot mechanism 30B, thus n = 4; the low pair connections include the rotational connection between the pivot base 300 and the first swing arm 310, the rotational connection between the first swing arm 310 and the second swing arm 320, the rotational connection or sliding connection between the second swing arm 320 and the first connecting block 100, the rotational connection between the third swing arm 330 and the pivot base 300, and the rotational connection or sliding connection between the third swing arm 330 and the first connecting block 100, thus P L = 5; the high pair connections include the rotational connection and sliding connection between the first swing arm 310 and the third swing arm 330, thus P H = 1.

[0193] Substituting n = 4, P L = 5, P H = 1 into the above formula (1), it can be obtained that F = 1. That is, the first swing arm 310, the second swing arm 320, the third swing arm 330, and the first connecting block 100 of the pivot mechanism 30B have a determined relative motion, and the pivot mechanism 30B has a determined motion trajectory.

[0194] In addition, other structures of the pivot mechanism 30B and its deformation modes are substantially the same as those of the pivot mechanism 30A shown in FIGS. 3A and 3B. For example, the matching mode between the pivot base 300, the first swing arm 310, the second swing arm 320, and the first connecting block 100 of the pivot mechanism 30B is substantially the same as that of the pivot mechanism 30A; for another example, the third swing arm 330 and the pivot base 300 of the pivot mechanism 30B can be connected by the rotational shaft 302 to realize the real-axle rotational connection, thus the description about the pivot mechanism 30A above can be referred to and will not be repeated here.

[0195] In some other embodiments of the present application, a high pair connection can also be formed between a pivot mechanism (for example, the pivot mechanism 30C described below) and the first shell, so that the degree of freedom of the pivot mechanism (for example, the pivot mechanism 30C described below) is 1.

[0196] Specifically, FIGS. 13A and 13B show an exemplary structure of the pivot mechanism 30C in some other embodiments of the present application, wherein FIG. 13A is a perspective view of the pivot mechanism 30C in a flattened state, and FIG. 13B is an exploded view of the pivot mechanism 30C in the flattened state. In FIG. 13A, the door plate 340 is not shown for easy observation, and in FIG. 13B, the assembly relationship of the components in the pivot mechanism 30C is schematically shown by dashed arrows.

[0197] Compared with the rotation shaft mechanism 30A shown in FIGS. 3A and 3B, the rotation shaft mechanism 30C shown in FIGS. 13A and 13B is different in that the degree of freedom of the rotation shaft mechanism 30C is limited to 1 by forming a higher pair connection between the first swing arm 310 and the first connecting block 100. Details are described below with reference to the accompanying drawings.

[0198] Specifically, FIGS. 14A to 14C show schematic diagrams of the higher pair connection between the first swing arm 310 and the first connecting block 100. With reference to FIGS. 14A to 14C and in combination with FIGS. 13A and 13B, the first swing arm 310 is connected to the first connecting block 100, and the connection between the first swing arm 310 and the first connecting block 100 is a higher pair connection. That is, the first swing arm 310 and the first connecting block 100 can relatively slide and relatively rotate.

[0199] In some implementations, the first swing arm 310 and the first connecting block 100 are connected by a matching pin shaft and a pin shaft groove to form a higher pair connection. For example, the first swing arm 310 includes a third pin shaft 314. The first connecting block 100 includes a third pin shaft groove 150. The end of the third pin shaft 314 is inserted into the third pin shaft groove 150. During movement of the first swing arm 310 and the first connecting block 100, the third pin shaft groove 150 and the third pin shaft 314 can relatively slide. For example, during movement of the first swing arm 310 and the first connecting block 100 from the state shown in FIG. 14B to the state shown in FIG. 14C, the third pin shaft groove 150 can slide from one end of the third pin shaft 314 to the other end of the third pin shaft 314, and at the same time, the third pin shaft groove 150 and the third pin shaft 314 can also relatively rotate. In this way, the higher pair connection between the first swing arm 310 and the first connecting block 100 can be achieved.

[0200] The structure, arrangement and variations of the third pin shaft 314 can refer to the description of the first pin shaft 324 in the foregoing embodiment shown in FIGS. 10A to 10C, and the structure, arrangement and variations of the third pin shaft groove 150 can refer to the description of the first pin shaft groove 333 in the foregoing embodiment shown in FIGS. 10A to 10C, which are not repeated here.

[0201] In this way, the degree of freedom of the rotation shaft mechanism 30C can be limited to 1, that is, the rotation shaft mechanism 30C has a certain movement trajectory. The way of calculating the degree of freedom can refer to the formula (1) and the related description in the foregoing embodiment, which are not repeated here.

[0202] In addition, the other structures of the rotation shaft mechanism 30C and its deformation modes are substantially the same as those of the rotation shaft mechanism 30A shown in FIGS. 3A and 3B. For example, the cooperation mode between the rotation shaft base 300, the first swing arm 310, the second swing arm 320, and the first connecting block 100 of the rotation shaft mechanism 30C is substantially the same as that of the rotation shaft mechanism 30A; for another example, the third swing arm 330 of the rotation shaft mechanism 30B and the rotation shaft base 300 can be connected by the rotation shaft 302 to realize the actual shaft rotation connection, and thus reference can be made to the description of the rotation shaft mechanism 30A above, and no further description is given here.

[0203] In some embodiments of the present application, the rotation shaft mechanism, for example, the rotation shaft mechanism 30A in the examples shown in FIGS. 3A and 3B, the rotation shaft mechanism 30B in the examples shown in FIGS. 11A and 11B, and the rotation shaft mechanism 30C in the examples shown in FIGS. 13A and 13B, can further include a door plate 340. The door plate 340 is used to support the screen 40 to further improve the impact resistance of the screen 40.

[0204] According to the above formula (1), when the rotation shaft mechanism includes the door plate 340 and the door plate 340 is a movable component, the number of movable components in the rotation shaft mechanism and the connection relationship between the movable components will change. In order to ensure that the degree of freedom of the rotation shaft mechanism is still 1, the connection relationship between the door plate 340 and other movable components needs to be reasonably set.

[0205] The following describes several exemplary installation modes of the door plate 340.

[0206] Based on the connection relationship between the rotation shaft base 300, the first swing arm 310, the second swing arm 320, the third swing arm 330, and the first connecting block 100 in the embodiments shown in FIGS. 3A and 3B, FIGS. 11A and 11B, and FIGS. 13A and 13B, in some implementable solutions, the door plate 340 can be rotationally connected with the first connecting block 100 and high-pair connected with one of the first swing arm 310, the second swing arm 320, and the third swing arm 330, so that the degree of freedom of the rotation shaft mechanism is 1. For ease of description, the following describes the rotation shaft mechanism 30A in the embodiment shown in FIGS. 3A and 3B. In this embodiment, the door plate 340 is rotationally connected with the first connecting block 100 and high-pair connected with the third swing arm 330.

[0207] FIGS. 15A and 15B show the cross-sectional views of the door plate 340 and the first connecting block 100 along the B-B cross section in FIG. 3A, wherein FIG. 15A shows the folding state of the folding mobile phone 1 in which the rotation shaft mechanism 30A is located, and FIG. 15B shows the unfolded state of the folding mobile phone 1 in which the rotation shaft mechanism 30A is located.

[0208] Referring to FIGS. 15A and 15B, and in combination with FIGS. 3A and 3B, the door plate 340 includes a fourth circular-arc sliding portion 341. The first connecting block 100 includes a fourth circular-arc groove 140. The axis of the fourth circular-arc sliding portion 341 and the fourth circular-arc groove 140 both extend along the X-axis direction. The fourth circular-arc sliding portion 341 is disposed in the fourth circular-arc groove 140. The fourth circular-arc sliding portion 341 can slide relative to the groove wall of the fourth circular-arc groove 140, so that the fourth circular-arc sliding portion 341 rotates relative to the fourth circular-arc groove 140 about the axis extending along the X-axis direction, and further so that the door plate 340 rotates relative to the first connecting block 100 about the axis extending along the X-axis direction. In other implementations, the door plate 340 and the first connecting block 100 can also be connected by a rotating shaft, and the specific implementation can refer to the scheme of the third swing arm 330 and the rotating shaft base 300 being connected by the rotating shaft 302 for the revolute connection in the embodiment shown in FIGS. 9A to 9C, which will not be described herein.

[0209] FIGS. 16A and 16B show schematic diagrams of the high pair connection between the third swing arm 330 and the door plate 340 in the rotating shaft mechanism 30A in the embodiment of the application, wherein FIG. 16A is an assembly view of the third swing arm 330 and the door plate 340, and FIG. 16B is an exploded view of the third swing arm 330 and the door plate 340.

[0210] Referring to FIGS. 16A and 16B, the third swing arm 330 includes a fourth pin shaft 335. The door plate 340 includes a fourth pin shaft groove 342. The fourth pin shaft 335 is inserted into the fourth pin shaft groove 342. In the movement process of the third swing arm 330 and the door plate 340, the fourth pin shaft 335 and the fourth pin shaft groove 342 can slide relative to each other, and at the same time, the fourth pin shaft 335 and the fourth pin shaft groove 342 can also rotate relative to each other. In this way, the high pair connection between the third swing arm 330 and the door plate 340 can be achieved.

[0211] The structure, arrangement and deformation of the fourth pin shaft 335 can refer to the description of the first pin shaft 324 in the foregoing embodiment shown in FIGS. 10A to 10C, and the structure, arrangement and deformation of the fourth pin shaft groove 342 can refer to the description of the first pin shaft groove 333 in the foregoing embodiment shown in FIGS. 10A to 10C, which will not be described herein.

[0212] Referring to the above formula (1), and in combination with FIGS. 3A, 3B, 15A to 16B, the movable components in the pivot mechanism 30A include the first swing arm 310, the second swing arm 320, the third swing arm 330, the door panel 340, and the first connecting block 100 of the pivot mechanism 30A, thus n = 5; the lower pair connections include the rotational connection between the pivot base 300 and the first swing arm 310, the rotational connection between the first swing arm 310 and the second swing arm 320, the rotational connection or sliding connection between the second swing arm 320 and the first connecting block 100, the rotational connection between the third swing arm 330 and the pivot base 300, the rotational connection or sliding connection between the third swing arm 330 and the first connecting block 100, and the rotational connection between the door panel 340 and the first connecting block 100, thus P L = 6; the high pair connections include the rotational connection and the sliding connection between the second swing arm 320 and the third swing arm 330, and the rotational connection and the sliding connection between the third swing arm 330 and the door panel 340, thus P H = 2.

[0213] Substituting n = 5, P L = 6, P H = 2 into the above formula (1), F = 1 can be obtained. That is, the first swing arm 310, the second swing arm 320, the third swing arm 330, the door panel 340, and the first connecting block 100 of the pivot mechanism 30A have a determined relative motion, and the pivot mechanism 30A has a determined motion trajectory.

[0214] In some other embodiments of the present application, the door panel 340 can be rotatably connected with the first connecting block 100, and be connected with the first swing arm 310 or the second swing arm 320 in a high pair connection. The specific implementation of the high pair connection between the door panel 340 and the first swing arm 310 can refer to the description of the door panel 340 and the first swing arm 310 in the embodiments shown in FIGS. 17A and 17B below. The specific implementation of the high pair connection between the door panel 340 and the second swing arm 320 can refer to the description of the door panel 340 and the second swing arm 320 in the embodiments shown in FIGS. 19A and 19B below.

[0215] In some other implementable schemes, the door panel 340 can be rotatably connected with the first connecting block 100, and be connected with any two of the first swing arm 310, the second swing arm 320, and the third swing arm 330 in a high pair connection, so that the degree of freedom of the pivot mechanism is 1. In other words, the high pair connections in the embodiments shown in FIGS. 3A and 3B, 11A and 11B, 13A and 13B are replaced by the high pair connections between the door panel 340 and any two of the first swing arm 310, the second swing arm 320, and the third swing arm 330. Exemplary introductions are made below in combination with the drawings.

[0216] Figures 17A and 17B show an exemplary structure of the hinge mechanism 30D in some embodiments of the present application, where Figure 17A is a perspective view of the hinge mechanism 30D in a flattened state, and Figure 17B is an exploded view of the hinge mechanism 30D in a flattened state. In Figure 17A, the door panel 340 is not shown, and in Figure 17B, the assembly relationship of the components in the hinge mechanism 30D is schematically shown by dashed arrows.

[0217] Compared with the hinge mechanism 30A shown in Figures 3A and 3B, the hinge mechanism 30D shown in Figures 17A and 17B is different in that the degree of freedom of the hinge mechanism 30D is limited to one by forming a higher pair connection between the first swing arm 310 and the door panel 340, and between the third swing arm 330 and the door panel 340. The door panel 340 is mounted in such a way that it is rotationally connected to the first connecting block 100, and is connected to the first swing arm 310 and the third swing arm 330 in a higher pair, and is rotationally connected to the first connecting block 100. Details are described below with reference to the accompanying drawings.

[0218] Figures 18A to 18C show schematic views of the higher pair connection between the first swing arm 310 and the door panel 340. Referring to Figures 18A to 18C in combination with Figures 17A and 17B, the first swing arm 310 is connected to the door panel 340, and the connection between the first swing arm 310 and the door panel 340 is a higher pair connection. That is, the first swing arm 310 and the door panel 340 can relatively slide and relatively rotate.

[0219] In some implementations, the first swing arm 310 and the door panel 340 are connected in a higher pair by cooperating pins and pin grooves. Exemplarily, the first swing arm 310 includes a fifth pin 315. The door panel 340 includes a fifth pin groove 343. The end of the fifth pin 315 is inserted into the fifth pin groove 343. During relative rotation of the first swing arm 310 and the door panel 340, the fifth pin 315 and the fifth pin groove 343 can relatively slide. For example, during rotation of the first swing arm 310 and the door panel 340 from the state shown in Figure 18B to the state shown in Figure 18C, the fifth pin 315 can slide from one end of the fifth pin groove 343 to the other end of the fifth pin groove 343, and at the same time, the fifth pin 315 and the fifth pin groove 343 can also relatively rotate. In this way, the higher pair connection between the first swing arm 310 and the door panel 340 can be achieved.

[0220] The structure, arrangement and variations of the fifth pin 315 can refer to the description of the first pin 324 in the foregoing embodiment shown in Figures 10A to 10C, and the structure, arrangement and variations of the fifth pin groove 343 can refer to the description of the first pin groove 333 in the foregoing embodiment shown in Figures 10A to 10C, which are not repeated here.

[0221] The third swing arm 330 is connected with the door plate 340, and the connection between the third swing arm 330 and the door plate 340 is a high pair connection. The high pair connection between the third swing arm 330 and the door plate 340 can refer to the description of the third swing arm 330 and the door plate 340 in the embodiment shown in FIGS. 16A and 16B, and will not be repeated here.

[0222] The door plate 340 is also rotatably connected with the first connecting block 100, and the specific implementation manner can refer to the description of the door plate 340 and the first connecting block 100 in the embodiment shown in FIGS. 15A and 15B, and will not be repeated here.

[0223] In this way, the degree of freedom of the rotation shaft mechanism 30D is 1.

[0224] Specifically, referring to formula (1) above, and combining FIGS. 17A to 18C, the movable components in the rotation shaft mechanism 30D include the first swing arm 310, the second swing arm 320, the third swing arm 330, the door plate 340, and the first connecting block 100 of the rotation shaft mechanism 30D, so n = 5; the lower pair connection includes the rotation connection between the rotation shaft base 300 and the first swing arm 310, the rotation connection between the first swing arm 310 and the second swing arm 320, the rotation connection or sliding connection between the second swing arm 320 and the first connecting block 100, the rotation connection between the third swing arm 330 and the rotation shaft base 300, the rotation connection or sliding connection between the third swing arm 330 and the first connecting block 100, and the rotation connection between the door plate 340 and the first connecting block 100, so P L = 6; the high pair connection includes the rotation connection and sliding connection between the first swing arm 310 and the door plate 340, and the rotation connection and sliding connection between the third swing arm 330 and the door plate 340, so P H = 2.

[0225] Substituting n = 5, P L = 6, P H = 2 into formula (1) above, it can be obtained that F = 1. That is, the first swing arm 310, the second swing arm 320, the third swing arm 330, the door plate 340, and the first connecting block 100 of the rotation shaft mechanism 30D have a certain relative motion, and the rotation shaft mechanism 30D has a certain motion trajectory.

[0226] In addition, other structures of the rotation shaft mechanism 30D and its deformation mode are substantially the same as those of the rotation shaft mechanism 30A shown in FIGS. 3A and 3B. For example, the matching mode between the rotation shaft base 300, the first swing arm 310, the second swing arm 320, and the first connecting block 100 of the rotation shaft mechanism 30D is substantially the same as that of the rotation shaft mechanism 30A; for another example, the third swing arm 330 and the rotation shaft base 300 of the rotation shaft mechanism 30D can be connected by the rotation shaft 302 to realize the real shaft rotation connection, and thus the description of the rotation shaft mechanism 30A above can be referred to, and will not be repeated here.

[0227] FIGS. 19A and 19B show an exemplary structure of the hinge mechanism 30E in some embodiments of the present application, where FIG. 19A is a perspective view of the hinge mechanism 30E in a flattened state, and FIG. 19B is an exploded view of the hinge mechanism 30E in a flattened state. In FIG. 19A, the door panel 340 is not shown, and in FIG. 19B, the assembly relationship of the components in the hinge mechanism 30E is schematically shown by dashed arrows.

[0228] Compared with the hinge mechanism 30A shown in FIGS. 3A and 3B, the hinge mechanism 30E shown in FIGS. 19A and 19B is different in that the degree of freedom of the hinge mechanism 30E is limited to one by forming a higher pair connection between the second swing arm 320 and the door panel 340, and between the third swing arm 330 and the door panel 340. The door panel 340 is mounted in such a way that it is rotatably connected to the first connecting block 100, and is higher pair connected to the second swing arm 320 and the third swing arm 330, respectively. Details are described below with reference to the accompanying drawings.

[0229] FIGS. 20A to 20C show schematic views of the higher pair connection between the second swing arm 320 and the door panel 340. With reference to FIGS. 20A to 20C in combination with FIGS. 19A and 19B, the second swing arm 320 is connected to the door panel 340, and the connection between the second swing arm 320 and the door panel 340 is a higher pair connection. That is, the second swing arm 320 and the door panel 340 can relatively slide and relatively rotate.

[0230] In some implementations, the second swing arm 320 and the door panel 340 are higher pair connected by a matching pin shaft and pin shaft slot. Exemplarily, the second swing arm 320 includes a sixth pin shaft 325. The door panel 340 includes a sixth pin shaft slot 344. The end of the sixth pin shaft 325 is inserted into the sixth pin shaft slot 344. During the movement of the second swing arm 320 and the door panel 340, the sixth pin shaft 325 and the sixth pin shaft slot 344 can relatively slide. For example, during the movement of the second swing arm 320 and the door panel 340 from the state shown in FIG. 20B to the state shown in FIG. 20C, the sixth pin shaft 325 can slide from one end of the sixth pin shaft slot 344 to the other end of the sixth pin shaft slot 344, and at the same time, the sixth pin shaft 325 and the sixth pin shaft slot 344 can also relatively rotate. In this way, the higher pair connection between the second swing arm 320 and the door panel 340 can be achieved.

[0231] The structure, arrangement and variations of the sixth pin shaft 325 can refer to the description of the first pin shaft 324 in the foregoing embodiments shown in FIGS. 10A to 10C, and the structure, arrangement and variations of the sixth pin shaft slot 344 can refer to the description of the first pin shaft slot 333 in the foregoing embodiments shown in FIGS. 10A to 10C, which are not repeated here.

[0232] The third swing arm 330 is connected with the door plate 340, and the connection between the third swing arm 330 and the door plate 340 is a high pair connection. The high pair connection between the third swing arm 330 and the door plate 340 can refer to the description of the third swing arm 330 and the door plate 340 in the embodiment shown in FIGS. 16A and 16B, and will not be repeated here.

[0233] The door plate 340 is also rotatably connected with the first connecting block 100, and the specific implementation manner can refer to the description of the door plate 340 and the first connecting block 100 in the embodiment shown in FIGS. 15A and 15B, and will not be repeated here.

[0234] In this way, the degree of freedom of the rotating shaft mechanism 30E is 1, that is, the rotating shaft mechanism 30E has a certain motion trajectory. The way to calculate the degree of freedom can refer to the description of formula (1) in the embodiment shown in FIGS. 17A to 18C, and will not be repeated here.

[0235] In addition, other structures of the rotating shaft mechanism 30E and its deformation mode are substantially the same as those of the rotating shaft mechanism 30A shown in FIGS. 3A and 3B. For example, the cooperation mode between the rotating shaft base 300, the first swing arm 310, the second swing arm 320, and the first connecting block 100 of the rotating shaft mechanism 30E is substantially the same as that of the rotating shaft mechanism 30A. For another example, the third swing arm 330 of the rotating shaft mechanism 30E and the rotating shaft base 300 can be rotatably connected through the rotating shaft 302, so the description of the rotating shaft mechanism 30A can be referred to, and will not be repeated here.

[0236] Based on the connection relationship between the rotating shaft base 300, the first swing arm 310, the second swing arm 320, the third swing arm 330, and the first connecting block 100 in the embodiments shown in FIGS. 3A and 3B, FIGS. 11A and 11B, and FIGS. 13A and 13B, in some other implementable schemes, the rotating shaft mechanism can further include a door plate swing arm, one end of the door plate swing arm is rotatably connected with the rotating shaft base 300, the other end is rotatably or slidably connected with the door plate 340, and the door plate 340 is also rotatably connected with the first connecting block 100, so that the degree of freedom of the rotating shaft mechanism is 1. For ease of description, based on the connection relationship between the rotating shaft base 300, the first swing arm 310, the second swing arm 320, the third swing arm 330, and the first connecting block 100 in the embodiment shown in FIGS. 3A and 3B, an exemplary introduction is made.

[0237] Specifically, referring to the above formula (1), the movable components include the first swing arm 310, the second swing arm 320, the third swing arm 330, the door panel 340, the door panel swing arm, and the first connecting block 100, thus n = 6; the low pair connections include the rotational connection between the rotating shaft base 300 and the first swing arm 310, the rotational connection between the first swing arm 310 and the second swing arm 320, the rotational connection or sliding connection between the second swing arm 320 and the first connecting block 100, the rotational connection between the third swing arm 330 and the rotating shaft base 300, the rotational connection or sliding connection between the third swing arm 330 and the first connecting block 100, the rotational connection between the door panel 340 and the first connecting block 100, the rotational connection between the door panel 340 and the door panel swing arm, and the rotational connection between the door panel swing arm and the rotating shaft base, thus P L = 8; the high pair connections include the rotational connection and sliding connection between the second swing arm 320 and the third swing arm 330, thus P H = 1.

[0238] Substituting n = 6, P L = 8, P H = 1 into the above formula (1), F = 1 can be obtained. That is, the first swing arm 310, the second swing arm 320, the third swing arm 330, the door panel 340, the door panel swing arm, and the first connecting block 100 have a determined relative motion.

[0239] Based on the connection relationship between the rotating shaft base 300, the first swing arm 310, the second swing arm 320, the third swing arm 330, and the first connecting block 100 in the embodiments shown in FIGS. 3A and 3B, FIGS. 11A and 11B, and FIGS. 13A and 13B, in some other implementable schemes, the door panel 340 can also be fixedly connected (for example, clamped, fastened, etc.) with any one of the first swing arm 310, the second swing arm 320, and the third swing arm 330, and not rotatably connected with the first connecting block 100. For example, the door panel 340 can be fixedly connected with one of the first swing arm 310, the second swing arm 320, or the third swing arm 330. That is, the door panel 340 is not a movable component, thus the degree of freedom of the rotating shaft mechanism does not change, and is still 1.

[0240] In some other implementable schemes, the door panel 340 can also be rotatably connected with the first connecting block 100, and not high-pair connected with the above-mentioned swing arms (for example, the first swing arm 310, the second swing arm 320, and the third swing arm 330). At this time, the motion of the door panel 340 is referred to as not actively driven, that is, the motion of the door panel 340 is not driven by the swing arms (for example, the first swing arm 310, the second swing arm 320, and the third swing arm 330).

[0241] It can be understood that in the embodiments shown in FIGS. 3A-20C, the third swing arm 330 is rotatably connected to the rotating shaft base 300 through the rotating shaft 302, that is, the connection between the third swing arm 330 and the rotating shaft base 300 is a real shaft connection. However, the present application is not limited thereto. In other embodiments, the rotatable connection between the third swing arm 330 and the rotating shaft base 300 can also be a virtual shaft connection, which will be described below.

[0242] FIGS. 21A and 21B show an exemplary structure of the rotating shaft mechanism 30F in some embodiments of the present application, wherein FIG. 21A is a perspective view of the rotating shaft mechanism 30F in a flattened state, and FIG. 21B is an exploded view of the rotating shaft mechanism 30F in a flattened state. In FIG. 21A, the door plate 340 is not shown, and in FIG. 21B, the assembly relationship of the components in the rotating shaft mechanism 30F is schematically shown by dashed arrows.

[0243] Compared with the rotating shaft mechanism 30A shown in FIGS. 3A and 3B, the difference between the rotating shaft mechanism 30F shown in FIGS. 21A and 21B is that the connection between the third swing arm 330 and the rotating shaft base 300 is a virtual shaft connection, which will be described in detail below with reference to the accompanying drawings.

[0244] FIGS. 22A and 22B show a schematic view of the virtual shaft connection between the third swing arm 330 and the rotating shaft base 300. Referring to FIGS. 22A and 22B in combination with FIGS. 21A and 21B, the third swing arm 330 includes a fifth circular-arc-shaped sliding portion 336. The rotating shaft base 300 includes a fifth circular-arc-shaped slot 304. The axis of the fifth circular-arc-shaped sliding portion 336 and the fifth circular-arc-shaped slot 304 both extend along the X-axis direction. The fifth circular-arc-shaped sliding portion 336 is arranged in the fifth circular-arc-shaped slot 304. The fifth circular-arc-shaped sliding portion 336 can slide relative to the slot wall of the fifth circular-arc-shaped slot 304, so that the fifth circular-arc-shaped sliding portion 336 rotates relative to the fifth circular-arc-shaped slot 304 about the axis extending along the X-axis direction, and further so that the third swing arm 330 rotates relative to the rotating shaft base about the axis extending along the X-axis direction.

[0245] In addition, the other structures of the rotating shaft mechanism 30F and its deformation modes are substantially the same as those of the rotating shaft mechanism 30A shown in FIGS. 3A and 3B. For example, the cooperation mode between the rotating shaft base 300, the first swing arm 310, the second swing arm 320, and the first connecting block 100 of the rotating shaft mechanism 30F is substantially the same as that of the rotating shaft mechanism 30A; for another example, the rotating shaft mechanism 30F can also include a door plate 340, and the mounting mode of the door plate 340 is substantially the same as that of the rotating shaft mechanism 30A, so reference can be made to the description of the rotating shaft mechanism 30A above, and no further description is given here.

[0246] It can be understood that the above-mentioned virtual shaft connection scheme and the high pair connection scheme can be combined arbitrarily, and the application does not make specific limitations thereon. For example, in the embodiments shown in FIGS. 21A to 22B, the third swing arm 330 is connected with the shaft base 300 in a virtual shaft connection, and the third swing arm 330 and the second swing arm 320 are connected in a high pair connection. In other embodiments, the third swing arm 330 can also be connected with the shaft base 300 in a virtual shaft connection, and the third swing arm 330 and the first swing arm 310 are connected in a high pair connection. That is, the real shaft connection between the third swing arm 330 and the shaft base 300 in the embodiments shown in FIGS. 11A and 11B is replaced by the virtual shaft connection in the embodiments shown in FIGS. 21A to 22B. In some other embodiments, the third swing arm 330 can also be connected with the shaft base 300 in a virtual shaft connection, and the first swing arm 310 and the first connecting block 100 are connected in a high pair connection. That is, the real shaft connection between the third swing arm 330 and the shaft base 300 in the embodiments shown in FIGS. 13A and 13B is replaced by the virtual shaft connection in the embodiments shown in FIGS. 21A to 22B. Similarly, in some other embodiments, the real shaft connection between the third swing arm 330 and the shaft base 300 in the embodiments shown in FIGS. 17A and 17B, FIGS. 19A and 19B can also be replaced by the virtual shaft connection in the embodiments shown in FIGS. 21A to 22B, which will not be described one by one here.

[0247] The above describes the embodiments of the application by specific embodiments, and those skilled in the art can easily understand other advantages and effects of the application from the disclosure. Although the description of the application is introduced in combination with some embodiments, it does not mean that the features of the application are limited to the embodiments. On the contrary, the purpose of introducing the application in combination with the embodiments is to cover other options or modifications that can be extended based on the claims of the application. The application can also not use these details. In addition, in order to avoid confusion or obscure the focus of the application, some specific details are omitted in the description. It should be noted that the embodiments in the application and the features in the embodiments can be combined with each other without conflict.

[0248] In the description of the application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "outer side", "inner side", "circumferential", "radial", "axial" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the application.

[0249] In the description of the application, it should be explained that, unless otherwise explicitly specified and limited, the terms "set", "install", "connect", "attach" should be understood broadly, for example, can be fixedly connected, can also be detachably connected, or integrally connected; can be mechanically connected, can also be electrically connected; can be directly connected, can also be indirectly connected through an intermediate medium, can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0250] Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalent technologies, the present application also intends to include these modifications and variations.

Claims

1. A rotation shaft mechanism characterized by comprising: The pivot mechanism comprises a pivot base, a first swing arm and a second swing arm, wherein: One end of the first swing arm is connected with the pivot base, the other end of the first swing arm is connected with one end of the second swing arm, the first swing arm can rotate relative to the pivot base, the second swing arm can rotate relative to the first swing arm, so that the pivot mechanism can rotate to a first state, the rotation axis of the first swing arm is parallel to the rotation axis of the second swing arm; The first swing arm comprises a first support surface, the second swing arm comprises a second support surface, when the pivot mechanism rotates to the first state, the first support surface and the second support surface are coplanar and perpendicular to the thickness direction of the pivot base.

2. The rotation shaft mechanism according to claim 1, wherein One of the pivot base and the first swing arm comprises a first circular arc slot, and the other comprises a first circular arc sliding part; The first circular arc sliding part is arranged in the first circular arc slot, and one of the first circular arc slot and the first circular arc sliding part can rotate relative to the other, so that the first swing arm and the pivot base are rotationally connected.

3. The rotation shaft mechanism according to claim 1, wherein One of the first swing arm and the second swing arm comprises a second circular arc slot, and the other comprises a second circular arc sliding part; The second circular arc sliding part is arranged in the second circular arc slot, and one of the second circular arc slot and the second circular arc sliding part can rotate relative to the other, so that the second swing arm and the first swing arm are rotationally connected.

4. The rotation shaft mechanism according to claim 1, wherein The pivot mechanism further comprises a first connecting block, and the other end of the second swing arm is rotationally connected with the first connecting block, wherein: One of the first connecting block and the second swing arm comprises a third circular arc slot, and the other comprises a third circular arc sliding part; The third circular arc sliding part is arranged in the third circular arc slot, and one of the third circular arc slot and the third circular arc sliding part can rotate relative to the other, so that the first connecting block and the second swing arm are rotationally connected.

5. The rotation shaft mechanism according to any one of claims 1 to 4, characterized by The pivot mechanism further comprises a third swing arm, one end of the third swing arm is connected with the pivot base, the third swing arm can rotate relative to the pivot base, the rotation axis of the third swing arm is parallel to the rotation axis of the first swing arm, and the third swing arm is arranged in the extension direction of the rotation axis of the first swing arm and spaced apart from the first swing arm.

6. The rotation shaft mechanism according to claim 5, wherein The first swing arm and the third swing arm are slidingly and rotationally connected.

7. The rotation axis mechanism according to claim 6, wherein One of the first swing arm and the third swing arm comprises a pin shaft, and the other comprises a pin shaft slot; The pin shaft is inserted into the pin shaft slot and can slide and rotate relative to the pin shaft slot, so that the first swing arm and the third swing arm are slidingly and rotationally connected.

8. The rotation shaft mechanism according to claim 5, wherein The second swing arm and the third swing arm are slidingly and rotationally connected.

9. The rotation shaft mechanism according to claim 5, wherein The pivot mechanism further comprises a first connecting block, and the other end of the third swing arm is rotationally or slidingly connected with the first connecting block; And the first swing arm is used for slidingly and rotationally connecting with the first connecting block.

10. The revolute mechanism according to any one of claims 6 to 9, wherein The pivot mechanism comprises a door panel and a first connecting block, the door panel is rotationally connected with the first connecting block, and the first connecting block is rotationally or slidingly connected with the other end of the third swing arm; And, the door plate is slidingly and rotatably connected with one of the first swing arm, the second swing arm or the third swing arm.

11. The rotation shaft mechanism according to claim 5, wherein The rotating shaft mechanism comprises a door plate and a first connecting block, the door plate is rotatably connected with the first connecting block, and the first connecting block is rotatably or slidingly connected with the other end of the third swing arm. And, the door plate is slidingly and rotatably connected with any two of the first swing arm, the second swing arm or the third swing arm.

12. The revolute mechanism according to any one of claims 6 to 9, wherein The rotating shaft mechanism comprises a door plate and a first connecting block, the door plate is rotatably connected with the first connecting block, and the first connecting block is rotatably or slidingly connected with the other end of the third swing arm. One end of the door plate swing arm is rotatably connected with the rotating shaft base, and the other end is rotatably or slidingly connected with the door plate.

13. The revolute mechanism according to any one of claims 6 to 9, wherein The rotating shaft mechanism comprises a door plate, and the door plate is fixedly connected with one of the first swing arm, the second swing arm or the third swing arm.

14. The rotation shaft mechanism according to claim 5, wherein The rotating shaft mechanism comprises a rotating shaft, and the rotating shaft is arranged in the third swing arm and the rotating shaft base, so that the third swing arm is rotatably connected with the rotating shaft base.

15. The rotation shaft mechanism according to claim 5, wherein One of the rotating shaft base and the third swing arm comprises a fifth circular-arc-shaped groove, and the other comprises a fifth circular-arc-shaped sliding part. The fifth circular-arc-shaped sliding part is arranged in the fifth circular-arc-shaped groove, and one of the fifth circular-arc-shaped groove and the fifth circular-arc-shaped sliding part can rotate relative to the other, so that the third swing arm is rotatably connected with the rotating shaft base.

16. A foldable electronic device, characterized by The rotating shaft mechanism comprises a first shell, a second shell and the rotating shaft mechanism of any one of claims 1 to 15, the first shell and the second shell are rotatably connected through the rotating shaft mechanism, and the rotating shaft mechanism can be rotated from the first state to a second state. When the rotating shaft mechanism is rotated to the first state, the foldable electronic device is in an unfolded state, and the first support surface and the second support surface are used for supporting the screen of the foldable electronic device; when the rotating shaft mechanism is rotated to the second state, the foldable electronic device is in a folded state.

17. The foldable electronic device of claim 16, wherein, The first shell comprises a first stop structure, the second swing arm comprises a second stop structure, and when the foldable electronic device is in the folded state, the second stop structure cooperates with the first stop structure to provide a limit for the second swing arm along the thickness direction of the foldable electronic device. When the foldable electronic device is in the unfolded state, the second stop structure is separated from the first stop structure.

18. The foldable electronic device of claim 17, wherein, The first stop structure is a groove, and the second stop structure is a protrusion matched with the groove.

19. The foldable electronic device of claim 18, wherein, The first swing arm comprises a second circular-arc-shaped groove, the extension direction of the second stop structure is parallel to the rotation axis of the second swing arm, at least part of the second stop structure has a circular-arc-shaped cross section, and is arranged in the second circular-arc-shaped groove, and the end of the second stop structure along the extension direction thereof constitutes a second circular-arc-shaped sliding part. One of the second circular-arc-shaped groove and the second circular-arc-shaped sliding part can rotate relative to the other, so that the second swing arm is rotatably connected with the first swing arm.

20. The foldable electronic device of claim 16, wherein, The rotating shaft mechanism comprises a first connecting block arranged between the first shell and the second swing arm for connecting the first shell and the second swing arm.

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