Rotary shaft mechanism and electronic device

Abstract

A rotary shaft mechanism and an electronic device. The rotary shaft mechanism comprises: a base (100), a first rotating member (200), a second rotating member (300), and a sliding member (400). The first rotating member (200) is rotatably fitted with the base (100); one end of the second rotating member (300) rotates around the base (100), and the other end thereof is slidably connected to the first rotating member (200); the sliding member (400) is slidably connected to the base (100) and is located between the first rotating member (200) and the second rotating member (300) in a first direction, and the sliding member (400) is in abutting fit with the first rotating member (200) and the second rotating member (300); and during rotation of the first rotating member (200) around the base (100), the first rotating member (200) drives the sliding member (400) to slide in the first direction, such that the second rotating member (300) rotates around the base (100) and slides relative to the first rotating member (200) in the first direction.

Description

A rotating shaft mechanism and electronic device Technical Field

[0001] This application relates to the field of terminal equipment technology, and in particular to a rotating shaft mechanism and electronic equipment. Background Technology

[0002] With the development of terminal technology, the screen sizes of mobile phones and other electronic devices are getting larger and larger. In order to meet users' portability needs while increasing screen size, foldable screen devices are gradually entering users' usage scenarios. Foldable screen devices typically use a hinge mechanism to achieve folding or unfolding.

[0003] The hinge mechanism includes a swing arm and a connecting block. When the electronic device falls, the swing arm and the connecting block slide relative to each other, causing the display screen to impact the hinge mechanism downwards, resulting in the display screen failure.

[0004] Summary of the Invention

[0005] This application provides a pivot mechanism and electronic device to solve the problem of relative sliding between the swing arm and the connecting block during a drop, which can easily lead to display screen failure.

[0006] In a first aspect, this application provides a rotating shaft mechanism, comprising: a base, a first rotating member, a second rotating member, and a sliding member. The first rotating member rotates in conjunction with the base; one end of the second rotating member rotates around the base, and the other end is slidably connected to the first rotating member; the sliding member is slidably connected to the base and is located between the first and second rotating members along a first direction, and the sliding member abuts against the first and second rotating members respectively; during the rotation of the first rotating member around the base, the first rotating member drives the sliding member to slide along the first direction, so that the second rotating member rotates around the base and slides relative to the first rotating member along the first direction; wherein, the first direction is the axial direction of the base.

[0007] The rotating shaft mechanism provided in this application embodiment has a first rotating member, a sliding member, and a second rotating member abutting and cooperating in a first direction to jointly form a rotating assembly of the rotating shaft mechanism. This rotating assembly can have both a synchronization function and a motion control function around the base, achieving both synchronization and improved strength of the rotating shaft mechanism. This not only reduces the space occupied by the rotating shaft mechanism in the y-axis direction, but also effectively distributes the drop impact force of the second rotating member using the first rotating member, preventing the second rotating member from detaching from its corresponding first rotating member. During a drop, it prevents the first rotating member from driving the electronic device's body towards the base, thereby preventing the body from driving the display screen to impact the base and causing display screen failure.

[0008] In some implementations, the first rotating component includes a main swing arm and a connecting block; one end of the main swing arm rotates in conjunction with the base, and the other end is connected to the connecting block; the second rotating component is located on one side of the main swing arm along a first direction and is connected to the connecting block; a sliding component is located between the main swing arm and the second rotating component along the first direction, the sliding component rotates helically with the main swing arm, and rotates in an arc with the second rotating component. Thus, the helistic rotation of the sliding component and the main swing arm can drive the second rotating component to slide along the first direction.

[0009] In some implementations, the main swing arm includes a rotating part and a connecting part. The rotating part rotates in conjunction with the base, and the connecting part is connected to a connecting block. The rotating part includes a first rotating structure and a first helical rotating structure. The first rotating structure is configured to rotate in conjunction with the base, and the first helical rotating structure is configured to rotate helically in conjunction with a sliding member. In this way, one end of the main swing arm rotates in an arc with the base, and the other end rotates helically with the sliding member, thereby forming an inverted structure. This prevents the main swing arm from detaching from the base during rotation or a fall, improving impact resistance and structural stability.

[0010] In some implementations, the slider includes a second helical rotation structure and a second rotation structure; the second helical rotation structure and the first helical rotation structure rotate in a helical engagement, and the second rotation structure is configured to rotate in an arc engagement with the second rotating member; the slider is configured to slide along a first direction when it is subjected to the force of the helical engagement of the first and second helical rotation structures as the first rotating member rotates around the base. This allows for the helical engagement of the main swing arm and the slider, enabling the slider to slide along the first direction following the rotation of the main swing arm around the base.

[0011] In some implementations, the second rotating member includes a rotating part and a sliding part. The rotating part rotates relative to the base, and the sliding part is slidably connected to the connecting block. The rotating part includes a third rotating structure, which rotates in an arc-shaped engagement with the second rotating structure of the sliding member. The second rotating member is configured to receive a force along the first direction when the sliding member slides along the first direction, and thus slides relative to the connecting block along the first direction. This allows the second rotating member to rotate in an arc-shaped engagement with the sliding member, enabling the second rotating member to both slide along the first direction with the sliding member and rotate around the base.

[0012] In some implementations, the connecting block includes a first groove, which is formed by an inward recess of a first width on the surface of the connecting block facing the base. A sliding portion of the second rotating member is disposed within the first groove, and when the second rotating member rotates around the base, the sliding portion slides within the first groove in a first direction. This allows the second rotating member to slide along the first direction.

[0013] In some implementations, the first slide groove includes a bottom surface that is away from the base; the sliding end of the sliding part, which is away from the base, is adjacent to the bottom surface of the first slide groove. This can prevent the second rotating component from wobbling in the x-axis direction, thereby providing more stable support for the connecting block to limit the movement of the fuselage frame; it can also effectively distribute the impact force of the second rotating component falling, improving impact reliability.

[0014] In some implementations, the first slide groove further includes opposing first and second sidewalls, which are respectively connected to the bottom surface. When the rotating shaft mechanism is in the unfolded state, there is a first distance between the first end of the sliding part and the first sidewall, and a second distance between the second end of the sliding part and the second sidewall, wherein the first distance is less than the second distance. The first end is adjacent to the sliding member along a first direction, and the second end is away from the sliding member along the first direction. When the rotating shaft mechanism is in the folded state, there is a third distance between the first end of the sliding part and the first sidewall, and a fourth distance between the second end of the sliding part and the second sidewall, wherein the third distance is greater than the fourth distance. The first distance is less than the third distance, and the second distance is greater than the fourth distance. This facilitates the sliding part of the second rotating member to slide within the first slide groove.

[0015] In some implementations, the connecting block further includes a clearance groove; the clearance groove is located on the side of the first slide groove opposite to the sliding member along a first direction and communicates with the first slide groove. In this way, the clearance groove can accommodate part of the sliding portion of the second rotating member.

[0016] In some implementations, the second rotating member further includes a protrusion extending relative to the sliding portion along a first direction; the protrusion is configured to slide into a clearance groove when the second rotating member slides relative to the connecting block along the first direction, with the end of the protrusion close to a third sidewall of the clearance groove. In this way, the clearance groove can accommodate the protrusion when the rotating shaft mechanism rotates, thus avoiding obstruction of the sliding portion's movement.

[0017] In some implementations, a helical sliding bracket is also included; the helical sliding bracket is located on the base and on the side of the second rotating member opposite to the sliding member; the helical sliding bracket is configured to rotate helically with the second rotating member and, in cooperation with the sliding member, allow the second rotating member to slide relative to the connecting block in a first direction and rotate around the base. Thus, the cooperation of the helical sliding bracket and the sliding member enables bidirectional movement of the second rotating member, namely sliding in the first direction and rotating around the base.

[0018] In some implementations, the rotating part of the second rotating member further includes a third helical rotating structure, and the side of the helical sliding bracket facing the second rotating member includes a fourth helical rotating structure. The third and fourth helical rotating structures rotate in a helical engagement. The helical sliding bracket is further configured such that when the second rotating member is subjected to a force from the sliding member along the first direction, the third and fourth helical rotating structures rotate in a helical engagement, causing the second rotating member to slide relative to the connecting block along the first direction and rotate around the base. In this way, the bidirectional movement of the second rotating member, i.e., sliding along the first direction and rotating around the base, can be achieved by utilizing the cooperation of the fourth helical rotating structure of the helical sliding bracket and the third helical rotating structure of the sliding member.

[0019] In some implementations, the first helical rotation structure of the first rotating member has a first helical surface, the second helical rotation structure of the sliding member has a second helical surface, the third helical rotation structure of the second rotating member has a third helical surface, and the fourth helical rotation structure of the helical sliding bracket has a fourth helical surface. The extension direction of the first helical surface is the same as that of the second helical surface, but different from that of the fourth helical surface; the extension direction of the third helical surface is the same as that of the fourth helical surface, but different from that of the second helical surface. This allows the helical directions of the first and second helical rotation structures on the same side of the base to be different from the helical directions of the third and fourth helical rotation structures, thus achieving simultaneous sliding of the sliding member and the second rotating member along the first direction and ensuring synchronization.

[0020] In some implementations, the base includes stacked shaft caps and a bracket, the bracket including a support rod whose length direction is parallel to the first direction; the slider also includes a second sliding groove whose length direction is parallel to the first direction; the support rod is embedded in the second sliding groove to enable the slider to slide along the base. This provides a way for the slider to slide relative to the base, allowing the slider to slide relative to the bracket when subjected to the force of the main swing arm, thereby driving the second rotating member to slide.

[0021] In some implementations, the second groove is located on the side of the slider facing away from the bracket; the surface of the support rod facing the shaft cover includes a third groove, the length direction of which is parallel to the first direction, and the length of the third groove is greater than the length of the second groove; the slider is located between the shaft cover and the bracket, and is situated within the third groove, while the support rod is embedded within the second groove, thereby enabling the slider to slide along the base. This provides another method for sliding the slider to the base, allowing the slider to slide relative to the bracket when subjected to the force of the main swing arm, thus driving the second rotating member to slide.

[0022] In some implementations, the support includes a fourth sliding groove, the length of which is parallel to the first direction; the slider includes a sliding block, the length of which is parallel to the first direction; the length of the fourth sliding groove is greater than the length of the sliding block; the sliding block is configured to be embedded in the fourth sliding groove and slide within the fourth sliding groove to achieve sliding of the slider along the base. This provides another method for sliding connection between the slider and the base, allowing the slider to slide relative to the support when subjected to the force of the main swing arm, thereby driving the second rotating member to slide.

[0023] In some implementations, the support includes a fixed support connected to the support rod and located on the side of the main swing arm away from the sliding member; the fixed support includes a fourth rotating structure configured to rotate in an arc with the first rotating structure of the main swing arm. This allows the main swing arm to rotate around the base.

[0024] In some implementations, a first pre-tensioning mechanism is also included. This first pre-tensioning mechanism is located on the side of the helical sliding bracket opposite to the second rotating member, with one end abutting against the helical sliding bracket and the other end fixed to the base. The first pre-tensioning mechanism is configured to press the helical sliding bracket, the second rotating member, the sliding member, the first rotating member, and the fixed bracket along a first direction. In this way, the first pre-tensioning mechanism can prevent the swing arms from shifting other than around the bracket, and can also compensate for gaps caused by rotational wear of the components, resulting in a tighter contact between the components in the axial direction.

[0025] In some implementations, a second pre-tensioning mechanism is also included. This second pre-tensioning mechanism is located on the side of the fixed bracket opposite to the main swing arm, with one end abutting against the fixed bracket and the other end fixed to the base. The second pre-tensioning mechanism is configured to press the helical sliding bracket, the second rotating member, the sliding member, the first rotating member, and the fixed bracket along a first direction. In this way, the second pre-tensioning mechanism can prevent the swing arms from shifting other than around the bracket, and can also compensate for gaps caused by rotational wear of the components, resulting in a tighter contact between the components in the axial direction.

[0026] In some implementations, there are at least two main swing arms, located on opposite sides of the base along a first direction, and rotating in coordination with the base; the extension direction of the first helical surface of the main swing arms located on opposite sides of the base is symmetrical with respect to the first direction. This allows for the synchronous rotation of the two first rotating components on both sides of the base.

[0027] In some implementations, there are at least two second rotating members, located on opposite sides of the base along the first direction, and rotating in coordination with the base; the extension direction of the third helical surface of the third helical rotation structure of the second rotating members located on opposite sides of the base is symmetrical with respect to the first direction. This allows for synchronous rotation of the two second rotating members on both sides of the base.

[0028] In some implementations, the slider includes a first slider and a second slider, located on opposite sides of the base along a first direction. Each of the first and second sliders includes a second helical surface, with each helical surface corresponding to one of the two main swing arms located on opposite sides of the base. The extension directions of the two helical surfaces are symmetrical with respect to the first direction. This allows the sliders on both sides of the base to slide synchronously along the first direction.

[0029] In some implementations, the helical sliding bracket includes a first helical body and a second helical body, located on opposite sides of the base along a first direction. Each of the first and second helical bodies includes a fourth helical surface, with the two fourth helical surfaces corresponding one-to-one and facing the two second rotating members located on opposite sides of the base. The extension directions of the two fourth helical surfaces are symmetrical with respect to the first direction. This allows for synchronous helical rotation of the helical sliding brackets on both sides of the base with their corresponding auxiliary swing arms.

[0030] In a second aspect, this application provides an electronic device, including a display screen, a first body, a second body, and a pivot mechanism as provided in the first aspect; the first body and the second body are located on opposite sides of the pivot mechanism along its axial direction, and the first body and the second body are respectively connected to the pivot mechanism; the display screen covers the first body, the second body and the pivot mechanism, and the first body and the second body rotate as the pivot mechanism bends or unfolds, thereby causing the display screen to bend or unfold.

[0031] Understandably, the electronic devices provided in the second aspect above are all applied to the rotating shaft mechanism provided above. Therefore, the beneficial effects they can achieve can be referred to the beneficial effects of the rotating shaft mechanism provided above, and will not be repeated here. Attached Figure Description

[0032] Figure 1 is a schematic diagram of the structure of the electronic device provided in an embodiment of this application;

[0033] Figure 2 is a schematic diagram of a rotating shaft assembly;

[0034] Figure 3 is a schematic diagram of a rotating shaft assembly in a folded state;

[0035] Figure 4 is a schematic diagram of an electronic device in a folded state;

[0036] Figure 5 is a schematic diagram of an electronic device in an unfolded state;

[0037] Figure 6 is an exploded structural diagram of the rotating shaft mechanism provided in the embodiment of this application;

[0038] Figure 7 is a schematic diagram of the first structure of the rotating shaft mechanism provided in the embodiment of this application in the unfolded state;

[0039] Figure 8 is a second structural schematic diagram of the rotating shaft mechanism provided in the embodiment of this application in the unfolded state;

[0040] Figure 9 is a schematic diagram of the rotating shaft mechanism provided in the embodiment of this application in a folded state;

[0041] Figure 10 is a schematic diagram of the structure of the bracket provided in an embodiment of this application;

[0042] Figure 11 is a first structural schematic diagram of the first rotating member provided in an embodiment of this application;

[0043] Figure 12 is a second structural schematic diagram of the first rotating member provided in an embodiment of this application;

[0044] Figure 13 is a structural schematic diagram of section AA in Figure 7;

[0045] Figure 14 is a schematic diagram of the first partial structure of the pivot mechanism in the folded state provided in an embodiment of this application;

[0046] Figure 15 is a third structural schematic diagram of the first rotating member provided in an embodiment of this application;

[0047] Figure 16 is a schematic diagram of the first structure of the slider provided in an embodiment of this application;

[0048] Figure 17 is a second structural schematic diagram of the slider provided in an embodiment of this application;

[0049] Figure 18 is a third structural schematic diagram of the slider provided in an embodiment of this application;

[0050] Figure 19 is a partial structural schematic diagram of the rotating shaft mechanism in the unfolded state provided in an embodiment of this application;

[0051] Figure 20 is a structural schematic diagram of section BB in Figure 7;

[0052] Figure 21 is a structural schematic diagram of the CC section in Figure 7;

[0053] Figure 22 is a schematic diagram of the first structure of the second rotating member provided in an embodiment of this application;

[0054] Figure 23 is a second partial structural schematic diagram of the rotating shaft mechanism in the folded state provided in an embodiment of this application;

[0055] Figure 24 is a structural schematic diagram of the DD section in Figure 7;

[0056] Figure 25 is a structural schematic diagram of the second rotating member and connecting block provided in an embodiment of this application;

[0057] Figure 26 is a second structural schematic diagram of the second rotating member provided in an embodiment of this application;

[0058] Figure 27 is a third structural schematic diagram of the second rotating member provided in an embodiment of this application;

[0059] Figure 28 is a schematic diagram of the first structure of the spiral sliding bracket provided in an embodiment of this application;

[0060] Figure 29 is a second structural schematic diagram of the spiral sliding bracket provided in an embodiment of this application;

[0061] Figure 30 is a structural schematic diagram of the EE section in Figure 7;

[0062] Figure 31 is a schematic diagram of the third structure of the spiral sliding bracket provided in the embodiment of this application;

[0063] Figure 32 is a schematic diagram of the structure of the first pre-tightening mechanism provided in the embodiment of this application.

[0064] Illustration:

[0065] Wherein: 10-First body, 20-Second body, 30-Display screen, 40-Rotating shaft assembly, 41-Rotating shaft base, 41a-Shaft cover area, 42-Left door panel, 43-Right door panel, 44-Left connecting block, 45-Right connecting block, 451-Vertical slide rail, 46-Rotating swing arm, 47-Synchronous swing arm, 471-Slider, 48-Door panel swing arm, 49-Rotating shaft, 51-First gear, 52-Second gear, 53-Third gear, 54-Fourth gear;

[0066] 100-Base, 101-Shaft cover, 102-Bracket, 1021-Support rod, 1022-Fixed bracket, 10221-Fourth rotating structure, 1023-First arc sliding surface, 1024-Second arc sliding surface, 1025-Fixed hole, 1026-Third sliding groove, 1027-Second groove;

[0067] 200-First rotating component, 210-Main swing arm, 210-1-First main swing arm, 210-2-Second main swing arm, 211-Rotating part, 212-Connecting part, 213-First rotating structure, 214-First spiral rotating structure, 2141-First spiral segment, 2142-Second spiral segment, 215-Third arc sliding surface, 216-First boss; 220-Connecting block, 220-1-First connecting block, 220-2-Second connecting block, 221-First sliding groove, 2211-Bottom surface, 2212-First side wall, 2213-Second side wall, 222-Allowing groove, 2221-Third side wall;

[0068] 300-Second rotating component, 300-1-First auxiliary swing arm, 300-2-Second auxiliary swing arm, 301-Rotating part, 302-Sliding part, 3021-End of sliding part, 3022-First side end, 3023-Second side end, 303-Third rotating structure, 304-Protrusion, 305-Third spiral rotating structure, 3051-Fifth spiral segment, 3052-Sixth spiral segment, 306-Fourth arc sliding surface, 307-Second boss;

[0069] 400-slider, 400-1-first sliding body, 400-2-second sliding body, 401-second spiral rotation structure, 4011-third spiral segment, 4012-fourth spiral segment, 402-second rotation structure, 403-second sliding groove, 404-first circular arc groove;

[0070] 500-Helical sliding bracket, 500-1-First helical body, 500-2-Second helical body, 501-Fourth helical rotation structure, 5011-Seventh helical segment, 5012-Eighth helical segment, 502-Second circular arc groove, 503-First groove, 504-Fixing block;

[0071] 601 - First pre-tensioning mechanism, 602 - Fixed seat. Detailed Implementation

[0072] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are all within the protection scope of this application.

[0073] In the description of this application, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0074] Furthermore, in this application, directional terms such as "upper," "lower," "left," "right," "inner," and "outer" are defined relative to the indicated placement of the components in the accompanying drawings. It should be understood that these directional terms are relative concepts, used for relative description and clarification, and can change accordingly depending on the placement of the components in the accompanying drawings.

[0075] The electronic devices described in this application include, but are not limited to, mobile phones, foldable phones, laptops, tablets, laptop computers, personal digital assistants, or wearable devices. The following description uses a foldable phone as an example.

[0076] Figure 1 is a schematic diagram of the structure of the electronic device provided in an embodiment of this application.

[0077] As shown in Figure 1, the electronic device may include a first body 10, a second body 20, a display screen 30, and a hinge assembly 40. The dashed lines in Figure 1 schematically indicate the area of ​​the hinge assembly 40. The first body 10 and the second body 20 are respectively located on opposite sides of the axis of the hinge assembly 40. The first body 10 and the second body 20 are connected to the hinge assembly 40 and can be rotated through the hinge assembly 40 to decrease the angle between the first body 10 and the second body 20 until the electronic device is in a folded state (as shown in Figure 2); or to increase the angle between the first body 10 and the second body 20 until the electronic device is in an unfolded state (as shown in Figure 1). The electronic device can also be unfolded or folded to an intermediate state, which can be any state between the unfolded and folded states.

[0078] The display screen 30 covers the first body 10, the second body 20, and the hinge assembly 40, and is connected to the first body 10 and the second body 20 respectively. The rotation of the first body 10 and the second body 20 can cause the display screen 30 to bend or unfold. For example, the display screen 30 can be a flexible screen that can be bent, and the display screen 30 has a bending area, so that the display screen 30 can be bent in the bending area as the hinge assembly 40 rotates.

[0079] The display screen 30 moves with the electronic device, and the state of the electronic device is the same as the state of the hinge assembly 40. When the electronic device is in the unfolded state, the hinge assembly 40 is also in the unfolded state. In the unfolded state, the first body 10 and the second body 20 are distributed parallel to each other on both sides of the hinge assembly 40, and the display screen 30 is laid flat on the hinge assembly 40 in the unfolded state, displaying the entire screen, giving the electronic device a larger display area to improve the user's viewing and operating experience. When the electronic device is in the folded state, the hinge assembly 40 is also in the folded state (as shown in Figure 2). In the folded state, the first body 10 and the second body 20 are distributed opposite each other on both sides of the hinge assembly 40, and the hinge assembly 40 presses the display screen 30 into a teardrop shape. When the electronic device is in the folded state, the planar size of the electronic device is small, making it easy for users to carry and store. When the electronic device is in the intermediate state, the hinge assembly 40 is also in the intermediate state.

[0080] Depending on the rotation direction of the first body 10 and the second body 20, the flexible screen may be hidden inside the body or wrapped around the outside of the electronic device when it is in a folded state. Specifically, when the first body 10 and the second body 20 are folded towards the front of the flexible screen, the flexible screen is hidden inside the body when the electronic device is in a folded state; this type of electronic device can be called an inward-folding screen electronic device, such as an inward-folding screen phone (as shown in Figure 2). When the first body 10 and the second body 20 are folded towards the back of the flexible screen, the flexible screen wraps around the outside of the body when the electronic device is in a folded state; this type of electronic device can be called an outward-folding screen electronic device, such as an outward-folding screen phone (this structure is not shown in the figure).

[0081] It should be noted that electronic components such as circuit boards, camera modules, speaker modules, and batteries can be installed inside the first body 10 and the second body 20, which will not be listed here.

[0082] To facilitate the explanation of the positions of various components in the electronic device, this application embodiment exemplarily establishes a three-dimensional coordinate system based on the electronic device, wherein the x-axis direction is the width direction of the electronic device, the y-axis direction is the length direction of the electronic device, and the z-axis direction is the thickness direction of the electronic device.

[0083] Figure 2 is a structural schematic diagram of a rotating shaft assembly; Figure 3 is a structural schematic diagram of a rotating shaft assembly in a folded state. Figure 3 shows the cross-sectional structure along the x-axis at the synchronous swing arm 47 in Figure 2.

[0084] As shown in Figures 2 and 3, the pivot assembly 40 includes a pivot base 41, a left door panel 42, a right door panel 43, a left connecting block 44, a right connecting block 45, two sets of rotating swing arms 46, two sets of synchronous swing arms 47 (also referred to as sliding swing arms), and two sets of door panel swing arms 48. It should be noted that one set of rotating swing arms 46 includes two rotating swing arms 46, one set of synchronous swing arms 47 includes two synchronous swing arms 47, and one set of door panel swing arms 48 includes two door panel swing arms 48.

[0085] The length direction of the pivot base 41 is the axial direction Z0 of the pivot assembly 40, and the axial direction Z0 is parallel to the y-axis. Two sets of rotating swing arms 46, two sets of synchronous swing arms 47, and two sets of door panel swing arms 48 are all spaced apart along the axial direction Z0. The two rotating swing arms 46 of the same set are located on opposite sides of the pivot base 41, the two synchronous swing arms 47 of the same set are located on opposite sides of the pivot base 41, and the two door panel swing arms 48 of the same set are located on opposite sides of the pivot base 41. The rotating swing arms 46, synchronous swing arms 47, and door panel swing arms 48 located on the same side are rotatably connected to the pivot base 41 via a pivot 49.

[0086] The left door panel 42 and the right door panel 43 are located on opposite sides of the pivot base 41 along the axial direction Z0. The left connecting block 44 and the right connecting block 45 are located on opposite sides of the pivot base 41 along the axial direction Z0. The left door panel 42 is connected to the left connecting block 44, and the right door panel 43 is connected to the right connecting block 45.

[0087] The left connecting block 44 is movably connected to one side of the rotating shaft base 41 via two rotating swing arms 46, two synchronous swing arms 47, and two door panel swing arms 48 located on the same side. The right connecting block 45 is movably connected to the other side of the rotating shaft base 41 via two rotating swing arms 46, two synchronous swing arms 47, and two door panel swing arms 48 located on the same side. The movable connection can be either a rotating engagement or a sliding connection. It should be noted that, for reliability, each set of swing arms can also have corresponding connection relationships with the left door panel 42 and the right door panel 43; these will not be elaborated upon here.

[0088] The rotating arm 46 is configured to enable the left connecting block 44 and the right connecting block 45 to rotate around the rotating shaft base 41; the synchronous arm 47 is configured to enable the left connecting block 44 and the right connecting block 45 to rotate synchronously, thereby enabling the first body 10 and the second body 20 to rotate synchronously; the door panel arm 48 is configured to enable the left door panel 42 and the right door panel 43 to rotate synchronously.

[0089] Figure 4 is a schematic diagram of an electronic device in a folded state.

[0090] As shown in Figures 1 and 4, the hinge assembly 40 is used in the structure of the electronic device. The left connecting block 44 is connected to the first body 10, and the right connecting block 45 is connected to the second body 20. Specifically, the left connecting block 44 is connected to the middle frame of the first body 10, and the right connecting block 45 is connected to the middle frame of the second body 20. The display screen 30 covers the left door panel 42 and the right door panel 43 (hereinafter collectively referred to as door panels), and the door panels support the display screen 30.

[0091] When the hinge assembly 40 switches between folded and unfolded states, the left connecting block 44 and the right connecting block 45 drive the first body 10 and the second body 20 to fold or unfold. Simultaneously, the door panel moves with the folding and unfolding of the hinge assembly 40, pushing the display screen 30 to fold or unfold. This provides support for the display screen 30 in the unfolded state and allows the display screen 30 to be pressed into a teardrop shape in the folded state. Thus, the folding or unfolding of the electronic device is achieved when the hinge assembly 40 folds or unfolds.

[0092] Each set of swing arms on both sides of the pivot base 41 rotates synchronously around the pivot base 41 via its corresponding pivot shaft 49. If the swing arms on both sides of the pivot base 41 do not rotate synchronously, the pivot assembly 40 will be unable to open or close, thus rendering the electronic device unusable and affecting the user experience. Therefore, a synchronization mechanism, such as a gear synchronization mechanism, can be provided within the pivot assembly 40 to achieve synchronous rotation of each set of swing arms.

[0093] As shown again in Figures 3 and 4, when the synchronous rotation of the shaft assembly 40 is achieved using a gear synchronization mechanism, the gear synchronization mechanism is located between two synchronous swing arms 47. The gear synchronization mechanism includes a first gear 51, a second gear 52, a third gear 53, and a fourth gear 54 that mesh sequentially. The first gear 51, the second gear 52, the third gear 53, and the fourth gear 54 all rotate through corresponding shafts 49. The first gear 51 is connected to the left synchronous swing arm 47, and the fourth gear 54 is connected to the right synchronous swing arm 47.

[0094] Taking the connection between the synchronous swing arm 47 and the right connecting block 45 as an example, the synchronous swing arm 47 includes a slider 471, and the right connecting block 45 includes a vertical slide groove 451, with the slider 471 embedded in the vertical slide groove 451. One end of the synchronous swing arm 47 is slidably connected to the right connecting block 45 via the slider 471, and the other end is connected to the fourth gear 54, so that it can rotate in cooperation with the rotating shaft base 41 via the rotating shaft 49.

[0095] When the rotating shaft assembly 40 is folded or unfolded, the slider 471 slides in the vertical slide groove 451 to realize the rotation of the two synchronous swing arms 47 around the rotating shaft base 41; at the same time, the first gear 51, the second gear 52, the third gear 53 and the fourth gear 54 mesh with each other and rotate to realize the synchronous rotation of the two synchronous swing arms 47.

[0096] The slider 471 and the vertical slide 451 are not fully overlapped. When the rotating shaft assembly 40 is in a folded state and is not subjected to impact force, the slider 471 and the vertical slide 451 have a first overlap amount L. 471 There is a first gap L between the end of slider 471 and the end of right connecting block 45. 45 .

[0097] Figure 5 is a schematic diagram of an electronic device in its unfolded state.

[0098] As shown in Figure 5, when the rotating shaft assembly 40 is in the unfolded state and is not subjected to impact force, the slider 471 and the vertical slide groove 451 have a second overlap amount L. 471 A second gap L exists between the end of slider 471 and the end of right connecting block 45. 45 '. Among them, the second overlap amount L 471 'Greater than the first overlap amount L' 471 Second gap L 45 'Less than the first gap L 45 .

[0099] As shown in Figures 3 and 5, when the pivot assembly 40 switches between the folded and unfolded states, the overlap between the slider 471 and the vertical slide 451 changes accordingly. Furthermore, there is always a gap between the end of the slider 471 and the end of the right connecting block 45, which makes it difficult for the synchronous swing arm 47 to limit the corresponding connecting block, and thus difficult to limit the middle frame of the fuselage.

[0100] When the electronic device is dropped in a folded state, the hinge base 41 impacts the ground first, deforming under the force, with its sides flaring outwards and its central area rising. Because the synchronous swing arm 47 is difficult to vertically restrain the middle frame, the middle frame (connecting block) is prone to intruding downwards into the hinge base 41 and then rebounding. The device body, carrying the display screen 30, then impacts the hinge base 41 downwards, causing damage and failure of the display screen 30. Furthermore, the synchronous swing arm 47, under the impact force, moves towards the hinge base 41, causing the slider 471 to slide downwards relative to the vertical slide groove 451. The overlap between the slider 471 and the vertical slide groove 451 gradually decreases, making it easy for the slider 471 to detach from the vertical slide groove 451, preventing the hinge assembly 40 from opening and closing properly.

[0101] There is a gap between the end of slider 471 and the end of right connecting block 45, which results in a large misalignment in the hinge area of ​​the electronic device. Furthermore, the misalignment is greatest in the area where the synchronous swing arm 47 engages with the vertical slide groove 451 when the hinge assembly 40 switches between folded and unfolded states. When the user pushes the first body 10 and the second body 20 to fold or unfold the electronic device, the synchronous swing arm 47 slides within the vertical slide groove 451, causing it to wobble relative to the corresponding connecting block. This, in turn, causes the corresponding connecting block to wobble, affecting the user experience.

[0102] When there is significant misalignment in the hinge area during the unfolded state, it can lead to excessive redundancy in the display screen 30 in the area where the vertical slide 451 and the synchronous swing arm 47 meet. For example, when there is significant misalignment in the hinge area during the unfolded state, as shown by the two "hand" icons in Figure 5, the user "squeezes from the two side frames towards the middle," causing the synchronous swing arm 47 to slide along the x-axis with the corresponding connecting block. This causes the first body 10 and the second body 20 to sway towards each other along the x-axis, resulting in redundancy in the hinge area of ​​the display screen 30. This can cause the display screen 30 to bulge, fold, or arch in the hinge area (as shown by the upward arrow in Figure 5), ultimately damaging and causing the display screen 30 to fail. Furthermore, the large distance between the rotating swing arm 46 and the synchronous swing arm 47 on the same side of the hinge base 41 in the y-axis direction can also lead to poor impact resistance during drops.

[0103] Furthermore, with the trend towards thinner and lighter electronic devices, the size of the gear synchronization mechanism also needs to be reduced. This reduction in size leads to smaller gears, which in turn results in insufficient gear strength. Particularly at the tooth root, these gears are prone to breakage during folding or after impacts such as drops. To ensure the gear size of the synchronization mechanism meets strength requirements, the gears occupy space in the shaft cover area of ​​the shaft base 41. Moreover, the gear synchronization structure uses a solid shaft (shaft 49) for synchronous rotation; to ensure strength, the diameter of shaft 49 needs to be at least 0.8 mm. All of this results in insufficient wall thickness in the shaft cover area 41 of the shaft base 41, for example, in the shaft cover area 41a shown in Figure 3. The reduced thickness of the shaft base 41 in the shaft cover area 41a leads to poor strength of the shaft base 41, affecting the use of the shaft assembly 40.

[0104] To address the aforementioned issues, this application provides a rotating shaft mechanism that employs a virtual rotating shaft spiral synchronization method. This allows the rotating shaft mechanism to have a rotating component that combines synchronization and motion control functions for the connecting blocks. This not only reduces the space occupied in the y-direction but also improves synchronization and shaft strength, preventing the synchronous swing arm from disengaging or becoming misaligned during drops, and avoiding the problem of the display screen 30 arching or failing due to impact with the rotating shaft base.

[0105] Figure 6 is an exploded structural diagram of the rotating shaft mechanism provided in the embodiment of this application.

[0106] As shown in Figure 6, in some embodiments, the rotating shaft mechanism may include: a base 100, a first rotating member 200, a second rotating member 300, a sliding member 400, a first door panel and a second door panel, the structure of the first door panel and the second door panel is not shown in the figure.

[0107] The base 100 can be a rotating shaft base in a rotating shaft mechanism. The length direction of the base 100 is the axial direction Z0 of the base 100, which is also the axial direction of the rotating shaft mechanism. The width direction of the rotating shaft mechanism is the x-axis direction, the length direction of the rotating shaft mechanism is the y-axis direction, the thickness direction of the rotating shaft mechanism is the z-axis direction, and the axial direction Z0 is parallel to the y-axis direction.

[0108] The first rotating member 200 is configured to rotate about the base 100 to realize the rotation of the rotating shaft mechanism. There are two first rotating members 200, which are located on opposite sides of the base 100 along the y-axis and both rotate in cooperation with the base 100.

[0109] The first rotating component 200 includes a main swing arm 210 and a connecting block 220, with the main swing arm 210 located on one side of the connecting block 220. The main swing arm 210 and the connecting block 220 can be fixedly connected by screws, or they can be an integral structure; this embodiment does not limit the specific connection.

[0110] The main swing arm 210 is configured to enable the connecting block 220 to rotate around the base 100. The number of main swing arms 210 can include multiple sets, with each set comprising two main swing arms 210. The two main swing arms 210 in the same set are located on opposite sides of the base 100 along the y-axis, with one end fixedly connected to the connecting block 220 and the other end rotating in cooperation with the base 100. It should be noted that the two main swing arms 210 in the same set belong to two first rotating members 200; that is, one first rotating member 200 can include multiple main swing arms 210. This document only exemplarily illustrates the structure of one set of main swing arms 210.

[0111] The second rotating member 300 is configured to rotate about the base 100 to ensure the rotational stability of the shaft mechanism. The number of second rotating members 300 can include multiple sets, with each set comprising two second rotating members 300. The two second rotating members 300 in the same set are located on opposite sides of the base 100 along the y-axis and both rotate about the base 100. It should be noted that this document only exemplifies the structure of one set of second rotating members 300.

[0112] The second rotating component 300 can be a secondary swing arm, which assists the main swing arm 210 to achieve synchronous rotation of the connecting block 220, realize synchronous rotation of the first door panel and the second door panel, improve the rotational stability of the rotating shaft mechanism, avoid swaying, and thus realize synchronous rotation of the first body 10 and the second body 20.

[0113] Connecting block 220 is configured to connect with the first body 10 and the second body 20 to achieve synchronous rotation of the electronic device and the pivot mechanism. For example, connecting block 220 may include a first connecting block 220-1 and a second connecting block 220-2, the functions of which are the same as those of the left connecting block 44 and right connecting block 45 of the pivot assembly 40 shown in FIG. 2. First connecting block 220-1 is connected to the middle frame of the first body 10, and second connecting block 220-2 is connected to the middle frame of the second body 20. When the pivot mechanism is folded or unfolded, the first connecting block 220-1 and the second connecting block 220-2 drive the folding or unfolding of the first body 10 and the second body 20.

[0114] The functions and structures of the first and second door panels are the same as those of the left door panel 42 and right door panel 43 of the pivot assembly 40 shown in Figure 2. The first and second door panels are located on opposite sides of the base 100 along the axial direction Z0, and the first connecting block 220-1 and the second connecting block 220-2 are located on opposite sides of the base 100 along the axial direction Z0. The first door panel is connected to the first connecting block 220-1, and the second door panel is connected to the second connecting block 220-2.

[0115] The sliding member 400 is configured to rotate in cooperation with the first rotating member 200 and the second rotating member 300 respectively. The sliding member 400 is configured to realize the synchronous rotation of the first rotating member 200 and the second rotating member 300 on opposite sides of the base 100, thereby realizing the synchronous rotation of the rotating shaft mechanism and the electronic device.

[0116] The number of sliders 400 can be at least one. The number of sliders 400 is the same as the number of groups of main swing arms 210 and the same as the number of groups of second rotating members 300. This article only shows the structure of one slider 400 as an example.

[0117] Figure 7 is a first structural schematic diagram of the rotating shaft mechanism provided in the embodiment of this application in its unfolded state; Figure 8 is a second structural schematic diagram of the rotating shaft mechanism provided in the embodiment of this application in its unfolded state. Figures 7 and 8 show partial structures of the rotating shaft mechanism from different perspectives.

[0118] As shown in Figures 7 and 8, in some embodiments, the base 100 may include a shaft cover 101 and a bracket 102, with the bracket 102 and the shaft cover 101 stacked and connected along the z-axis.

[0119] The shaft cover 101 is located on the back side of the bracket 102. The back side of the bracket 102 refers to the side of the bracket 102 that faces away from the display screen 30. The shaft cover 101 serves as an external component of the hinge mechanism, covering the bracket 102 and the moving parts connected to it within the hinge mechanism. This ensures the appearance of the electronic device and prevents external interference from affecting the relative movement between the moving parts within the hinge mechanism and the bracket 102.

[0120] The bracket 102 provides a positional reference within the pivot mechanism and enables movable connections with various moving parts (such as sets of swing arms) to allow the electronic device to move between an unfolded and folded state. It should be noted that the bracket 102 can consist of a bracket body and a support plate, with the shaft cover 101, bracket body, and support plate stacked sequentially. The structure of the bracket 102 can be determined according to the actual application and is not limited here.

[0121] The main swing arm 210 is located on one side of the base 100 along the axial direction Z0 and rotates in coordination with the base 100. The main swing arms 210 of the two first rotating members 200 are the first main swing arm 210-1 and the second main swing arm 210-2, which are located on opposite sides of the base 100 along the axial direction Z0 of the base 100 and rotate in coordination with the base 100.

[0122] The second rotating member 300 is located on one side of the base 100 along the axial direction Z0. One end of the second rotating member 300 rotates around the base 100, and the other end is slidably connected to the connecting block 220 in the first rotating member 200. The second rotating member 300 and the main swing arm 210 are both located between the base 100 and the connecting block 220, and the second rotating member 300 and the main swing arm 210 are connected to the same side of the connecting block 220.

[0123] The second rotating component 300 includes a first auxiliary swing arm 300-1 and a second auxiliary swing arm 300-2. The first auxiliary swing arm 300-1 and the second auxiliary swing arm 300-2 are located on opposite sides of the base 100 along the axial direction Z0 and rotate around the base 100. The first auxiliary swing arm 300-1 and the first main swing arm 210-1 are located on the same side of the base 100 along the axial direction Z0, and the second auxiliary swing arm 300-2 and the second main swing arm 210-2 are located on the same side of the base 100 along the axial direction Z0.

[0124] The length direction of the connecting block 220 is parallel to the axial direction Z0. The connecting block 220 is connected to the main swing arm 210 and the second rotating member 300. There are two connecting blocks 220, namely the first connecting block 220-1 and the second connecting block 220-2, which are located on opposite sides of the base 100 along the axial direction Z0. The first connecting block 220-1 is movably connected to one side of the bracket 102 through the main swing arm 210 and the second rotating member 300 located on the same side, and the second connecting block 220-2 is movably connected to the other side of the bracket 102 through the main swing arm 210 and the second rotating member 300 located on the same side. For example, the first connecting block 220-1 is movably connected to one side of the bracket 102 through the first main swing arm 210-1 and the first auxiliary swing arm 300-1, and the second connecting block 220-2 is movably connected to the other side of the bracket 102 through the second main swing arm 210-2 and the second auxiliary swing arm 300-2.

[0125] In this way, the second rotating component 300 and the main swing arm 210 work together to realize the transmission between the base 100 and the connecting block 220, so as to enhance the connection strength between the connecting block 220 and the base 100 and improve the stability of the movement of the connecting block 220 relative to the base 100.

[0126] In the unfolded state, the main swing arm 210 and the second rotating member 300 abut or are spaced slightly apart along the y-axis, forming a rotating assembly of the shaft mechanism. This rotating assembly can both synchronize the shaft mechanism and control the rotation of the connecting block 220. Compared to the commonly used shaft assembly 40 where the rotating arm 46 and the synchronizing arm 47 are spaced apart, in this embodiment, the main swing arm 210 and the second rotating member 300 are concentrated along the axial direction Z0, which reduces the space occupied by the main swing arm 210 in the y-axis direction of the shaft mechanism. Furthermore, during a fall, the rotating assembly as a whole is subjected to the impact force; that is, both the main swing arm 210 and the second rotating member 300 are subjected to this impact force. Since the main swing arm 210 is fixedly connected to the connecting block 220, and the main swing arm 210 supports the connecting block 220, no relative movement occurs between the main swing arm 210 and the connecting block 220 when the main swing arm 210 is subjected to the impact force. In this way, the main swing arm 210 can effectively distribute the impact force of the second rotating component 300 during a drop, thereby reducing the impact force on the second rotating component 300. This prevents relative movement between the second rotating component 300 and the corresponding connecting block 220, and the second rotating component 300 will not detach from the connecting block 220, thus improving the drop impact resistance reliability of the rotating shaft mechanism. The connecting block 220 will not cause the display screen 30 to move downwards, thus preventing the display screen 30 from impacting the base 100 and causing damage and failure.

[0127] The sliding member 400 is slidably connected to the base 100 and is located between the main swing arm 210 and the second rotating member 300 along the first direction. The sliding member 400 abuts against the main swing arm 210 and the second rotating member 300 respectively. The two ends of the sliding member 400 are respectively embedded in the structure of the main swing arm 210 and the second rotating member 300. The structure of the sliding member 400 does not change the distance between the main swing arm 210 and the second rotating member 300, that is, it does not change the range of the rotating assembly formed by the main swing arm 210 and the second rotating member 300, so as to ensure that the main swing arm 210 and the second rotating member 300 have a small abutment or small gap in the unfolded state.

[0128] One end of the slider 400 is helically engaged with the main swing arm 210 for rotation, and the other end of the slider 400 is arc-engaged with the second rotating component 300 for rotation. The slider 400 includes a first slider 400-1 and a second slider 400-2 connected to each other. The connection between the first slider 400-1 and the second slider 400-2 is slidably connected to the bracket 102, and the first slider 400-1 and the second slider 400-2 are an integral structure. The first sliding body 400-1 is located between the first auxiliary swing arm 300-1 and the first main swing arm 210-1 along the y-axis. One end of the first sliding body 400-1 rotates in a helical engagement with the first main swing arm 210-1, and the other end rotates in an arc engagement with the first auxiliary swing arm 300-1. The second sliding body 400-2 is located between the second auxiliary swing arm 300-2 and the second main swing arm 210-2 along the y-axis. One end of the second sliding body 400-2 rotates in a helical engagement with the second main swing arm 210-2, and the other end rotates in an arc engagement with the second auxiliary swing arm 300-2.

[0129] During the rotation of the main swing arm 210 around the base 100, the main swing arm 210 drives the sliding member 400 to slide along the first direction; so that the second rotating member 300 rotates around the base 100, and the connecting block 220 relative to the first rotating member 200 slides along the first direction to achieve synchronous rotation; wherein, the first direction is the axial direction Z0 of the base 100, and the first direction is also the y-axis direction.

[0130] Figure 9 is a schematic diagram of the rotating shaft mechanism provided in the embodiment of this application in a folded state.

[0131] As shown in Figure 9, exemplarily, when the rotating shaft mechanism is folded or unfolded, the first rotating members 200 on opposite sides of the base 100 are forced to rotate around the base 100, causing the first connecting block 220-1 and the second connecting block 220-2 to rotate around the bracket 102, synchronously driving the first main swing arm 210-1 and the second main swing arm 210-2 to rotate around the bracket 102. The rotation of the first rotating member 200 causes the first sliding body 400-1 and the second sliding body 400-2 to slide along a first direction, thereby causing the first auxiliary swing arm 300-1 to slide relative to the first connecting block 220-1 along the first direction, and causing the second auxiliary swing arm 300-2 to slide relative to the second connecting block 220-2 along the first direction; simultaneously, the rotation of the first connecting block 220-1 and the second connecting block 220-2 causes the first auxiliary swing arm 300-1 and the second auxiliary swing arm 300-2 to rotate around the bracket 102. In this way, the synchronous rotation of the swing arm assembly and the connecting block 220 on opposite sides of the base 100 can be achieved.

[0132] In the folded state, the first connecting block 220-1 and the second connecting block 220-2 move synchronously to a state perpendicular to the base 100, and the first connecting block 220-1 and the second connecting block 220-2 are opposite each other. The main swing arm 210 and the second rotating member 300 also rotate to a state perpendicular to the base 100, with the first main swing arm 210-1 and the second main swing arm 210-2 opposite each other, and the first auxiliary swing arm 300-1 and the second auxiliary swing arm 300-2 opposite each other.

[0133] The first connecting block 220-1 rotates around the base 100 via the first main swing arm 210-1 and the first auxiliary swing arm 300-1. The second connecting block 220-2 rotates around the base 100 via the second main swing arm 210-2 and the second auxiliary swing arm 300-2, so that the first connecting block 220-1 and the second connecting block 220-2 drive the folding or unfolding of the first body 10 and the second body 20; at the same time, they drive the relative movement of the first door panel and the second door panel to push the display screen 30 to fold or unfold, thereby realizing the folding or unfolding of the electronic device.

[0134] In the rotating shaft mechanism provided in this embodiment, the main swing arm 210 of the first rotating member 200 and the second rotating member 300 abut or have a small gap along the axial direction, and the sliding member 400 is located between the main swing arm 210 and the second rotating member 300 along the axial direction. The sliding member 400 cooperates with the main swing arm 210 and the second rotating member 300 to rotate, so that the main swing arm 210 and the second rotating member 300 both rotate around the base 100 using a virtual rotating shaft rotation method, so as to achieve synchronous rotation of the first rotating member 200 and the second rotating member 300 on opposite sides of the base 100. Compared with the real shaft rotation synchronization method of commonly used gear synchronization mechanisms, the swing arms of this rotating shaft mechanism do not need to use a real shaft to rotate around the base 100, nor do they need to set up a gear structure to achieve the synchronization function. In this way, the occupation of the gear structure and the rotating shaft 49 on the internal space of the base 100 can be reduced, thereby increasing the thickness of the shaft cover 101 while meeting the requirements of thinness and lightness, so as to improve the strength of the shaft cover 101. Therefore, the rotating shaft mechanism provided in this application embodiment can achieve both synchronization and improved strength of the rotating shaft mechanism.

[0135] Figure 10 is a schematic diagram of the structure of the bracket provided in an embodiment of this application.

[0136] As shown in Figure 10, in some embodiments, the bracket 102 includes a support rod 1021 and a fixed bracket 1022, which are connected in a vertical state.

[0137] The length direction of the support rod 1021 is parallel to the first direction (y-axis direction); the support rod 1021 can be located at the middle of the bracket 102 along the x-axis direction, or at both ends of the bracket 102 along the x-axis direction. This application does not specifically limit the position of the support rod 1021, but only exemplifies the structure of the support rod 1021 located at the middle of the bracket 102 along the x-axis direction as an example.

[0138] The fixed bracket 1022 is located on the side of the main swing arm 210 opposite to the sliding member 400, and the extension direction of the fixed bracket 1022 is the second direction. The second direction is perpendicular to the first direction and is the x-axis direction.

[0139] The fixed bracket 1022 includes two fourth rotating structures 10221, which are located on opposite sides of the support rod 1021 and are symmetrical with respect to the support rod 1021. The two fourth rotating structures 10221 are configured to correspond one-to-one with the two main swing arms 210 and rotate in an arc.

[0140] The bracket 102 also includes two first arc-shaped sliding surfaces 1023 and two second arc-shaped sliding surfaces 1024. The two first arc-shaped sliding surfaces 1023 are located on opposite sides of the support rod 1021 and are symmetrical with respect to the support rod 1021. The two first arc-shaped sliding surfaces 1023 correspond one-to-one with the two adjacent fourth rotating structures 1022. The two first arc-shaped sliding surfaces 1023 are configured to correspond one-to-one with the two main swing arms 210 and are in arc-shaped sliding engagement. Combined with the two fourth rotating structures 10221, the two main swing arms 210 are rotated around the bracket 102.

[0141] Two second arc-shaped sliding surfaces 1024 are arranged along the y-axis, corresponding one-to-one with two first arc-shaped sliding surfaces 1023 and spaced apart. The two second arc-shaped sliding surfaces 1024 are located on opposite sides of the support rod 1021 and are symmetrical with respect to the support rod 1021. The two second arc-shaped sliding surfaces 1024 are configured to correspond one-to-one with two second rotating members 300 and are in arc-shaped sliding engagement to realize the rotation of the two second rotating members 300 around the bracket 102.

[0142] The centers of the first arc sliding surface 1023 and the second arc sliding surface 1024, located on the same side of the support rod 1021, can be located on the same virtual rotation axis to ensure the synchronous rotation of the main swing arm 210 and the second rotating component 300 around the bracket 102. The extension direction of the virtual rotation axis is parallel to the axial direction Z0.

[0143] Figure 11 is a first structural schematic diagram of the first rotating member provided in an embodiment of this application; Figure 12 is a second structural schematic diagram of the first rotating member provided in an embodiment of this application. Figures 11 and 12 show structures from different perspectives. The structures of the two first rotating members 200 are symmetrical with respect to the axial direction Z0. This paper only uses one of the first rotating members 200 as an example to illustrate its structural characteristics.

[0144] As shown in Figures 11 and 12, in the structure of the first rotating member 200, the main swing arm 210 includes a rotating part 211 and a connecting part 212. One end of the rotating part 211 rotates in conjunction with the base 100, and the other end of the rotating part 211 is connected to one end of the connecting part 212. The other end of the connecting part 212 is connected to the connecting block 220. Exemplarily, the connecting part 212 and the connecting block 220 can be fixedly connected by screws, or they can be an integral structure; this embodiment of the application does not limit the scope of the application.

[0145] The rotating part 211 includes a first rotating structure 213 and a first helical rotating structure 214. Referring to FIG10, the first rotating structure 213 is located at one end of the rotating part 211 facing the fourth rotating structure 10221 of the support 102. The first rotating structure 213 is configured to cooperate with the base 100 to achieve arc-shaped rotation, that is, it is configured to cooperate with the fourth rotating structure 10221 of the support 102 to achieve arc-shaped rotation. The first helical rotating structure 214 is located at one end of the rotating part 211 away from the first rotating structure 213. The first helical rotating structure 214 is configured to helically cooperate with the slider 400.

[0146] The fourth rotating structure 10221 of the bracket 102 and the first rotating structure 213 of the main swing arm 210 can achieve arc-shaped rotation by using an arc groove fit. Thus, the first rotating structure 213 can be a sliding groove, and the fourth rotating structure 10221 can be a slider; or, the first rotating structure 213 can be a slider, and the fourth rotating structure 10221 can be a sliding groove. The slider is embedded in the sliding groove and is configured to slide along the sliding groove when the rotating shaft mechanism rotates.

[0147] Figure 13 is a structural schematic diagram of section AA in Figure 7.

[0148] Referring to Figures 10, 11, and 13, this paper uses the fourth rotating structure 10221 as a groove and the first rotating structure 213 as a slider as an example for explanation. Both the groove and the slider are arc-shaped structures. The first rotating structure 213 of the main swing arm 210 is embedded in the groove (fourth rotating structure 10221) of the support 102. The groove serves as a guide to facilitate the rotation of the main swing arm 210 around the support 102 and to constrain the rotation angle of the main swing arm 210.

[0149] The rotating part 211 of the main swing arm 210 also includes a third arc sliding surface 215. The third arc sliding surface 215 faces the bracket 102. The third arc sliding surface 215 corresponds one-to-one with the first arc sliding surface 1023 of the bracket 102 and the arc surfaces slide together.

[0150] Referring to Figures 8, 10, and 13, when the rotating shaft mechanism is in the unfolded state, the first rotating structure 213 of the main swing arm 210 is completely embedded in the slide groove (fourth rotating structure 10221) of the bracket 102; the third arc sliding surface 215 of the rotating part 211 is in surface contact with the first arc sliding surface 1023 of the bracket 102, and the third arc sliding surface 215 can fully cover the first arc sliding surface 1023.

[0151] Figure 14 is a first partial structural schematic diagram of the pivot mechanism in the folded state provided in an embodiment of this application. Figure 14 shows a partial structure of the pivot mechanism in Figure 9 located on one side of the base 100.

[0152] As shown in Figures 14(a) and (b), when the rotating shaft mechanism is rotated to the folded state, the first rotating structure 213 (slider) of the rotating part 211 rotates along the fourth rotating structure 10221 (slide groove) on the bracket 102, and the first rotating structure 213 of the main swing arm 210 is partially embedded in the fourth rotating structure 10221 of the bracket 102; and, in conjunction with Figure 11, the third arc sliding surface 215 of the rotating part 211 rotates relative to the first arc sliding surface 1023 of the bracket 102, and the third arc sliding surface 215 partially covers the first arc sliding surface 1023.

[0153] In this way, the fourth rotating structure 10221 of the support 102 and the first rotating structure 213 of the main swing arm 210 achieve arc-shaped rotation through an arc groove fit. The first arc sliding surface 1023 of the support 102 slides with the arc surface of the third arc sliding surface 215 of the main swing arm 210, so that the main swing arm 210 and the support 102 form a virtual rotating shaft connection for rotation. The main swing arm 210 and the support 102 rotate through this virtual rotating shaft connection to achieve the rotation of the main swing arm 210 relative to the base 100, thereby realizing the switching of the rotating shaft mechanism between folding and unfolding.

[0154] Figure 15 is a third structural schematic diagram of the first rotating member provided in the embodiment of this application.

[0155] As shown in Figure 15, in the structure of the main swing arm 210, the first spiral rotation structure 214 includes a first spiral segment 2141 and a second spiral segment 2142. Referring to Figure 14, the first spiral segment 2141 is adjacent to the support rod 1021 of the bracket 102, and the second spiral segment 2142 is adjacent to the connecting block 220.

[0156] The first helical segment 2141 protrudes along the y-axis in a direction away from the first rotating structure 213, i.e., towards the slider 400; the second helical segment 2142 is recessed along the y-axis towards the first rotating structure 213. Both the first helical segment 2141 and the second helical segment 2142 are inclined relative to the y-axis, and are smoothly connected to form an inclined first helical surface. Along the first direction, from the first helical segment 2141 to the second helical segment 2142 of the main swing arm 210, the first helical surface gradually tilts away from the slider 400, and the second helical segment 2142 moves away from the slider 400 relative to the first helical segment 2141 along the first direction.

[0157] Referring to Figure 7, the extension direction of the first helical surface of the first helical rotation structure 214 of the two main swing arms 210 located on opposite sides of the base 100 is symmetrical with respect to the first direction, and the first helical surfaces of the two main swing arms 210 form an angle toward the fixed bracket 1022 (not shown in the figure).

[0158] This can be understood as follows: the first helical rotation structure 214 is formed by one end of the rotating part 211 adjacent to the sliding member 400, recessed inward along the axial direction Z0 towards the rotating part 211 in an inclined helical structure, thus forming a receiving space (not shown in the figure) between the first helical rotation structure 214 and the connecting part 212. By using this receiving space to accommodate the sliding member 400, the sliding member 400 can be prevented from changing the distance between the main swing arm 210 and the second rotating member 300, that is, it will not change the area of ​​the rotating assembly formed by the main swing arm 210 and the second rotating member 300, so that the main swing arm 210, the sliding member 400 and the second rotating member 300 are arranged in a concentrated manner to ensure that the main swing arm 210 and the second rotating member 300 have a small gap between them.

[0159] One end of the main swing arm 210 rotates in an arc with the bracket 102, while the other end rotates in a helical engagement with the sliding member 400, forming an inverted structure. This prevents the main swing arm 210 from detaching from the bracket 102 during rotation or a fall, thus improving its impact resistance and reliability.

[0160] Figure 16 is a first structural schematic diagram of the slider provided in an embodiment of this application; Figure 17 is a second structural schematic diagram of the slider provided in an embodiment of this application. Figures 16 and 17 show the structure from different perspectives.

[0161] As shown in Figures 16 and 17, the slider 400 includes a first slider 400-1 and a second slider 400-2. The structures of the first slider 400-1 and the second slider 400-2 are symmetrical with respect to the y-axis direction. This paper only takes the structure of one of the sliders as an example to illustrate its structural characteristics.

[0162] The sliding body includes a second helical rotation structure 401 and a second rotation structure 402. Referring to Figure 7, the second helical rotation structure 401 is located at one end of the sliding member 400 facing the main swing arm 210. The second helical rotation structure 401 is configured to cooperate with the first helical rotation structure 214 of the main swing arm 210 to achieve helical rotation. The second rotation structure 402 is located at one end of the sliding member 400 facing the second rotating member 300. The second rotation structure 402 is configured to cooperate with the second rotating member 300 to achieve arc rotation.

[0163] The slider also includes a first arc groove 404, which is located between the second helical rotation structure 401 and the bottom end of the slider. Referring again to Figure 12, the rotating part 211 of the main swing arm 210 also includes a first boss 216, which extends relative to the first helical rotation structure 214 along the y-axis toward the slider 400, and the first boss 216 has an arc-shaped structure.

[0164] The slider 400 slides with the main swing arm 210 using a spiral groove engagement. The first boss 216 on the rotating part 211 of the main swing arm 210 is embedded in the first arc groove 404 of the slider 400. The second spiral rotation structure 401 of the slider 400 and the first spiral rotation structure 214 of the main swing arm 210 rotate in a spiral engagement to achieve the connection between the main swing arm 210 and the slider 400.

[0165] Figure 18 is a third structural schematic diagram of the slider provided in an embodiment of this application.

[0166] As shown in Figure 18, in some embodiments, the slider 400 is configured to slide along a first direction when the main swing arm 210 rotates around the base 100, subject to the force of the first helical rotation structure 214 and the second helical rotation structure 401 rotating helically.

[0167] In the structure of the slider 400, the second helical rotation structure 401 includes a third helical segment 4011 and a fourth helical segment 4012. Referring to Figure 14, the third helical segment 4011 is close to the connection between the first slider 400-1 and the second slider 400-2 (the location of the second slide groove 403) and also close to the support rod 1021; the fourth helical segment 4012 is away from the connection between the first slider 400-1 and the second slider 400-2 (the location of the second slide groove 403) and is close to the connecting block 220.

[0168] Figure 19 is a partial structural schematic diagram of the rotating shaft mechanism in the unfolded state provided in an embodiment of this application.

[0169] Referring to Figures 18 and 19, the third helical segment 4011 is recessed along the y-axis in the direction away from the first helical segment 2141 of the first helical rotation structure 214 in the main swing arm 210, that is, recessed towards the second rotating member 300; the fourth helical segment 4012 protrudes along the y-axis towards the main swing arm 210, that is, protrudes towards the second helical segment 2142 of the first helical rotation structure 214 in the main swing arm 210. Both the third helical segment 4011 and the fourth helical segment 4012 are inclined relative to the y-axis, and the third helical segment 4011 and the fourth helical segment 4012 are smoothly connected to form an inclined second helical surface. Along the first direction, from the third helical segment 4011 to the fourth helical segment 4012 of the slider 400, the second helical surface gradually tilts towards the main swing arm 210, and the fourth helical segment 4012 is closer to the main swing arm 210 relative to the third helical segment 4011 along the first direction.

[0170] Referring to Figure 7, the first slider 400-1 and the second slider 400-2 are located on opposite sides of the base 100 along the first direction. The first slider 400-1 and the second slider 400-2 each include a second helical surface. The two second helical surfaces are oriented one-to-one toward the two main swing arms 210 located on opposite sides of the base 100. The extension directions of the two second helical surfaces are symmetrical with respect to the first direction. The second helical surfaces of the two sliders form an angle (not shown in the figure) toward the fixed bracket 1022.

[0171] The extension direction of the second helical surface of the second helical rotation structure 401 is parallel to the extension direction of the first helical surface of the first helical rotation structure 214 of the main swing arm 210, and the rotation direction of the second helical surface of the second helical rotation structure 401 is the same as the helical direction (hereinafter referred to as rotation direction) of the first helical surface of the first helical rotation structure 214 of the main swing arm 210. In this way, the sliding member 400 and the main swing arm 210 can be rotated in a helical cooperation, and it is also convenient for part of the structure of the sliding member 400 to be embedded in the receiving space formed between the first helical rotation structure 214 and the connecting part 212, so as to ensure that the main swing arm 210 and the second rotating member 300 have a small gap in contact or separation when in the unfolded state.

[0172] The first helical surface of the first helical rotation structure 214 in the main swing arm 210 and the second helical surface of the second helical rotation structure 401 in the slider 400 rotate in a helical engagement to achieve the helical engagement rotation of the main swing arm 210 and the slider 400.

[0173] When the rotating shaft mechanism is in the unfolded state, the first helical segment 2141 of the main swing arm 210 abuts against the third helical segment 4011 of the slider 400, and the second helical segment 2142 of the main swing arm 210 abuts against the fourth helical segment 4012 of the slider 400.

[0174] As shown in Figures 14(a) and (b), when the rotating shaft mechanism rotates from the unfolded state to the folded state, the main swing arm 210 rotates around the base 100 to a vertical state. As the main swing arm 210 rotates around the base 100 along the z-axis, the first helical rotating structure 214 of the main swing arm 210 applies a force along the y-axis to the second helical rotating structure 401 of the slider 400. The first helical segment 2141 pushes or squeezes the third helical segment 4011, causing the first helical segment 2141 of the main swing arm 210 to slide from contact with the third helical segment 4011 of the slider 400 to contact with the fourth helical segment 4012. Since the first helical segment 2141 and the fourth helical segment 4012 protrude towards each other along the y-axis, the fourth helical segment 4012 of the slider 400 is closer to the main swing arm 210 relative to the third helical segment 4011, and the main swing arm 210 does not move in the y-axis direction, thereby pushing the slider 400 to slide in the direction of the second rotating member 300 along the y-axis.

[0175] The first direction includes a first sub-direction z1 and a second sub-direction z2. The first sub-direction z1 and the second sub-direction z2 are opposite and both parallel to the y-axis direction. The first sub-direction z1 is the direction from the main swing arm 210 to the second rotating member 300, and the second sub-direction z2 is the direction from the second rotating member 300 to the main swing arm 210. For example, when the rotating shaft mechanism rotates from the unfolded state to the folded state, the sliding member 400 is subjected to the force of the main swing arm 210 and slides along the first sub-direction z1 towards the second rotating member 300; when the rotating shaft mechanism rotates from the folded state to the unfolded state, the sliding member 400 is subjected to the force of the second rotating member 300 and slides along the second sub-direction z2 towards the main swing arm 210.

[0176] In this way, the main swing arm 210 and the slider 400 rotate in a spiral cooperation. During rotation, the first spiral rotation structure 214 of the main swing arm 210 and the second spiral rotation structure 401 of the slider 400 rotate in a spiral, causing the contact position between the two to change. At the same time, the main swing arm 210 can rotate around the base 100, pushing the slider 400 to slide along the axial direction (y-axis).

[0177] In some embodiments, the slider 400 and the bracket 102 of the base 100 can be slidably connected by a slider-slide groove engagement.

[0178] Referring again to Figure 17, the slider 400 includes a second groove 403, the length direction of which is parallel to the first direction (y-axis direction). The second groove 403 cooperates with the support rod 1021 of the bracket 102 to realize the sliding of the slider 400 relative to the bracket 102.

[0179] The number and position of the second slide groove 403 relative to the slider 400 can correspond to the number and position of the support rod 1021 relative to the bracket 102. For example, if the support rod 1021 is located at the middle of the bracket 102 along the x-axis, then the second slide groove 403 is located at the middle of the slider 400 along the x-axis; if the support rod 1021 is located at the end of the bracket 102 along the x-axis, then the second slide groove 403 is located at the end of the slider 400 along the x-axis. If there is one support rod 1021, then there is one second slide groove 403; if there are multiple support rods 1021, then there are multiple second slide grooves 403.

[0180] This article uses a structure with a support rod 1021 located at the middle of the bracket 102 along the x-axis and a second slide groove 403 located at the middle of the slider 400 along the x-axis as an example for illustrative purposes.

[0181] Figure 20 is a schematic diagram of the structure of section BB in Figure 7; Figure 21 is a schematic diagram of the structure of section CC in Figure 7.

[0182] As shown in Figures 20 and 21, in some embodiments, the second groove 403 is located at the middle of the slider 400 along the second direction (x-axis direction). For example, the first slider 400-1 and the second slider 400-2 are connected along the x-axis direction, and the second groove 403 is located at the connection point between them.

[0183] The bracket 102 includes a third groove 1026 on the side facing the shaft cover 101. The third groove 1026 is located on the side surface of the support rod 1021 facing the shaft cover 101, and the length direction of the third groove 1026 is parallel to the first direction.

[0184] The slider 400 is slidably connected to the bracket 102. A second groove 403 is located on the side of the slider 400 facing away from the bracket 102. For example, the second groove 403 is located on the side of the connection between the first slider 400-1 and the second slider 400-2 facing away from the bracket 102. The slider 400 can be located between the shaft cover 101 and the bracket 102. The connection between the first slider 400-1 and the second slider 400-2 is located within a third groove 1026. The length of the third groove 1026 along the y-axis is greater than the length of this connection. The support rod 1021 of the bracket 102 is embedded in the second groove 403 to allow the slider 400 to slide along the base 100.

[0185] When the rotating shaft mechanism rotates, the sliding member 400 is subjected to the force of the main swing arm 210 and / or the second rotating member 300, and slides in the third sliding groove 1026, thereby realizing the sliding member 400 sliding along the first direction.

[0186] In some embodiments, the second groove 403 may be located on the side surface of the slider 400 facing the bracket 102, and the support rod 1021 is embedded in the second groove 403 to enable the slider 400 to slide along the base 100. For example, the second groove 403 is located on the side surface facing the bracket 102 at the connection between the first slider 400-1 and the second slider 400-2, and the slider 400 is located above the bracket 102, such that the support rod 1021 of the bracket 102 is embedded in the second groove 403 to enable the slider 400 to slide along the base 100. The structure of this method of achieving a sliding connection between the slider 400 and the bracket 102 is not shown in the figures.

[0187] In some embodiments, the bracket 102 may include a fourth slide groove located on the surface of the bracket 102 facing the slider 400, and the length direction of the fourth slide groove is parallel to the first direction. The slider 400 may include a slider block located on one side surface of the slider 400 facing the bracket 102, and the length direction of the slider block is parallel to the first direction.

[0188] The length of the fourth groove is greater than the length of the sliding block; the sliding block is configured to be embedded in the fourth groove and slide within the fourth groove to achieve the sliding of the sliding member 400 along the base 100. The structure of this method of achieving the sliding connection between the sliding member 400 and the bracket 102 is not shown in the figure.

[0189] The fourth slide groove can be located at the middle of the bracket 102 along the x-axis, or at both ends of the bracket 102 along the x-axis, or on the support rod 1021; the position of the sliding block on the sliding member 400 is opposite to the position of the fourth slide groove on the sliding member 400, and this application does not limit this.

[0190] It should be noted that the second slide groove 403 and the third slide groove 1026 are positioned opposite each other, and the sliding block and the fourth slide groove are positioned opposite each other. Furthermore, there can be multiple sets of the second slide groove 403, the third slide groove 1026, the fourth slide groove, and the sliding block. The sliding connection between the sliding member 400 and the bracket 102 can be achieved through the cooperation of multiple sets of the second slide groove 403 with the support rod 1012, multiple sets of the second slide groove 403 with the third slide groove 1026, or multiple sets of the fourth slide groove with the sliding block.

[0191] It should be noted again that the sliding connection between the slider 400 and the bracket 102 can also be achieved in other ways. For example, the third sliding groove 1026 can be provided on the surface of the support rod 1021 facing away from the shaft cover 101, and the second sliding groove 403 can be provided on the surface of the slider 400 facing the shaft cover 101. The slider 400 can be provided on the side of the support rod 1021 facing away from the shaft cover 101, and the second sliding groove 403 and the third sliding groove 1026 can be engaged to achieve the sliding connection between the slider 400 and the bracket 102. Furthermore, the slider 400 and the bracket 102 of the base 100 can also slide using a slide rail. This application embodiment does not specifically limit the sliding connection method between the slider 400 and the bracket 102.

[0192] Figure 22 is a schematic diagram of the first structure of the second rotating member provided in the embodiment of this application. The two second rotating members 300 in the rotating shaft mechanism have symmetrical structures with respect to the axial direction. This paper only uses the structure of one of the second rotating members 300 as an example to illustrate its structural characteristics.

[0193] As shown in Figure 22, in some embodiments, the second rotating member 300 includes a rotating part 301 and a sliding part 302. One end of the rotating part 301 rotates in conjunction with the base 100, and the other end of the rotating part 301 is connected to one end of the sliding part 302. The other end of the sliding part 302 is slidably connected to the connecting block 220.

[0194] The rotating part 301 includes a third rotating structure 303. Referring to Figure 7, the third rotating structure 303 is located at one end of the rotating part 301 facing the slider 400. The third rotating structure 303 cooperates with the second rotating structure 402 of the slider 400 to achieve arc-shaped rotation.

[0195] Referring to Figures 10 and 22, in some embodiments, the rotating part 301 further includes a fourth arcuate sliding surface 306, which faces the bracket 102. The fourth arcuate sliding surfaces 306 of the two second rotating members 300 correspond one-to-one with and abut against the second arcuate sliding surfaces 1024 of the bracket 102.

[0196] Figure 23 is a second partial structural schematic diagram of the pivot mechanism in the folded state provided in an embodiment of this application. Figure 23 shows a partial structure of the pivot mechanism in Figure 9 located on one side of the base 100.

[0197] As shown in Figures 23(a) and (b), for example, the second rotating structure 402 of the slider 400 is an arc-shaped slider structure. Referring to Figure 17, the second rotating structure 402 includes a fifth arc-shaped sliding surface 4021. The fifth arc-shaped sliding surface 4021 of the second rotating structure 402 is a certain distance from the bottom of the slider 400, so that an accommodating space (not shown in the figure) is formed between the fifth arc-shaped sliding surface 4021 and the second arc-shaped sliding surface 1024 of the bracket 102.

[0198] The third rotating structure 303 of the second rotating member 300 is an arc-shaped sliding groove structure. The second rotating structure 402 is embedded in the third rotating structure 303, and the third rotating structure 303 is embedded in the receiving space between the fifth arc-shaped sliding surface 4021 and the second arc-shaped sliding surface 1024. In this way, the fifth arc-shaped sliding surface 4021 slides in a groove-like manner with the arc-shaped groove of the third rotating structure 303 to achieve the arc-shaped rotation of the second rotating member 300 and the sliding member 400.

[0199] It can be understood that the third rotating structure 303 is formed by recessing one end of the rotating part 301 near the sliding member 400 along the axial direction into the rotating part 301 according to the arc groove structure, so that the third rotating structure 303 forms a groove space, which is used to accommodate the sliding member 400.

[0200] One end of the slider 400 is embedded in the receiving space formed by the first helical rotating structure 214 and the connecting part 212 of the main swing arm 210, and the other end is embedded in the groove space formed by the third rotating structure 303 of the second rotating member 300. In this way, the slider 400 can avoid changing the distance between the main swing arm 210 and the second rotating member 300, that is, it will not change the area range of the rotating assembly formed by the main swing arm 210 and the second rotating member 300, so as to ensure that the main swing arm 210 and the second rotating member 300 have a small contact or small gap in the unfolded state.

[0201] When the rotating shaft mechanism is in the folded state, referring to Figures 22 and 23, the second rotating structure 402 (slider) of the slider 400 rotates along the third rotating structure 303 (slide groove) of the rotating part 301, and the second rotating structure 402 (slider) of the slider 400 is partially embedded in the third rotating structure 303 (slide groove) of the rotating part 301; and the fourth arc sliding surface 306 of the rotating part 301 rotates relative to the second arc sliding surface 1024 of the bracket 102, and the fourth arc sliding surface 306 partially covers the second arc sliding surface 1024.

[0202] Figure 24 is a structural schematic diagram of the DD section in Figure 7.

[0203] As shown in Figures 23 and 24, when the rotating shaft mechanism is in the unfolded state, the second rotating structure 402 (slider) of the slider 400 is completely embedded in the third rotating structure 303 (slide groove) of the rotating part 301; the fourth arc sliding surface 306 of the rotating part 301 is in surface contact with the second arc sliding surface 1024 of the bracket 102, and the fourth arc sliding surface 306 completely covers the second arc sliding surface 1024.

[0204] The fourth arc sliding surface 306 of the second rotating member 300 slides in conjunction with the arc surface of the second arc sliding surface 1024 of the bracket 102. Furthermore, the third rotating structure 303 of the second rotating member 300 and the second rotating structure 402 of the sliding member 400 utilize an arc groove connection to achieve arc-shaped rotation, thus forming a virtual rotating shaft connection between the second rotating member 300 and the bracket 102. In this way, when the rotating shaft mechanism is folded or unfolded, the fourth arc sliding surface 306 of the rotating part 301 of the second rotating member 300 slides relative to the arc surface 1024 of the bracket 102, and the third rotating structure 303 rotates in conjunction with the arc surface of the second rotating structure 402, realizing the rotation of the second rotating member 300 relative to the base 100, thereby achieving the switching between folding and unfolding of the rotating shaft mechanism.

[0205] Referring to Figures 11, 15, and 24, in some embodiments, the connecting block 220 includes a first groove 221, which is recessed inward by a first width W from the surface of the connecting block 220 facing the base 100.221 And thus formed.

[0206] The first slide 221 includes a bottom surface 2211, a first side wall 2212 and a second side wall 2213. The first side wall 2212 and the second side wall 2213 are respectively connected to the bottom surface 2211. The first side wall 2212 is adjacent to the main swing arm 210 along the first direction, and the second side wall 2213 is away from the main swing arm 210 along the first direction.

[0207] The bottom surface 2211 is away from the base 100, and the extension direction of the bottom surface 2211 is parallel to the axial direction (y-axis). The first sidewall 2212 and the second sidewall 2213 are opposite and parallel, and the extension directions of the first sidewall 2212 and the second sidewall 2213 are parallel to the x-axis direction.

[0208] The sliding part 302 of the second rotating member 300 is a slider structure, and the sliding part 302 is embedded in the first groove 221. The length L of the first groove 221 along the y-axis direction is... 221 The length L along the y-axis of the sliding part 302 is greater than 302 (As shown in Figure 22), so that the sliding part 302 can slide in the first groove 221.

[0209] The second rotating member 300 is configured to be subjected to a force along the first direction when the sliding member 400 slides along the first direction, and to slide relative to the connecting block 220 along the first direction, and to be subjected to the arc rotation of the third rotating structure 303 and the second rotating structure 402, and to rotate around the base 100.

[0210] Referring to Figures 19 and 23, when the rotating shaft mechanism rotates, the main swing arm 210 rotates around the base 100, pushing the slider 400 to slide along the y-axis. The slider 400 applies a force along the y-axis to the second rotating member 300, causing the sliding part 302 of the second rotating member 300 to slide along the y-axis within the first groove 221 of the slider 400. Simultaneously, the third rotating structure 303 of the second rotating member 300 rotates in conjunction with the second rotating structure 402 of the slider 400, causing the second rotating member 300 to rotate around the base 100.

[0211] As shown in Figures 15 and 24, in some embodiments, the sliding end 3021 of the sliding part 302 facing away from the base 100 is adjacent to the bottom surface 2211 of the first slide groove 221. The sliding end 3021 of the sliding part 302 is in slight contact with or has a small gap from the bottom surface 2211 of the first slide groove 221. It can be understood that the sliding end 3021 of the sliding part 302 is in a near-abutment state with the bottom surface 2211 of the first slide groove 221. When the sliding part 302 of the second rotating member 300 slides in the first slide groove 221, no frictional force is generated between the sliding end 3021 and the bottom surface 2211, thus avoiding affecting the sliding state of the sliding part 302 along the axial direction.

[0212] For example, in the rotating shaft mechanism, the sliding end 3021 of the first auxiliary swing arm 300-1 is in slight contact with or has a small gap from the bottom surface 2211 of the first slide groove 221 of the first connecting block 220-1, and the sliding end 3021 of the second auxiliary swing arm 300-2 is in slight contact with or has a small gap from the bottom surface 2211 of the first slide groove 221 of the second connecting block 220-2.

[0213] The two second rotating members 300 and the two connecting blocks 220 are in slight contact or have a small gap in the x-axis direction. The sliding part 302 of the second rotating member 300 and the first groove 221 of the connecting block 220 are fully overlapped. When the rotating shaft mechanism switches between the folded state and the unfolded state, since the second rotating member 300 and the connecting block 220 do not move relative to each other, the overlap between the sliding part 302 and the first groove 221 remains constant. The small gap between the sliding end 3021 of the sliding part 302 and the bottom surface 2211 of the first groove 221 does not change, thus preventing the risk of the second rotating member 300 coming out of the first groove 221 on the connecting block 220.

[0214] The second rotating component 300 will not wobble in the x-axis direction, allowing for more stable support of the connecting block 220. Combined with the support provided by the main swing arm 210, this further prevents the connecting block 220 from moving towards the base 100 during a drop. Thus, the connecting block 220 can better limit the movement of the body frame, further improving the drop impact resistance reliability of the hinge mechanism. Furthermore, it reduces the play in the pressing motion on both sides of the hinge. Referring again to Figure 5, when the user presses the body from both sides of the frame towards the center, for example, when rotating from the unfolded state to the folded state, there will be no displacement or relative movement between the connecting block 220 and the second rotating component 300 in the x-axis direction. This not only reduces the play in the hinge area of ​​the electronic device but also prevents redundancy in the hinge area of ​​the display screen 30, thus preventing the display screen 30 from being squeezed upwards / arched when changing from the unfolded state to the folded state, and avoiding damage and failure of the display screen 30.

[0215] When the pivot mechanism is in a folded state and falls, the connecting block 220 is supported by the second rotating member 300 and the main swing arm 210, and will not move relative to the second rotating member 300 toward the base 100; combined with the snap-fit ​​structure between the second rotating member 300 and the sliding member 400, the sliding part 302 will not come out of the first sliding groove 221, and thus will not drive the body toward the base 100, avoiding the body frame from driving the display screen 30 to impact the base 100, which would cause the display screen 30 to fail and improve the user experience.

[0216] Since the second rotating component 300 and the bracket 102 are connected by a virtual rotating shaft and rotate together, and the main swing arm 210 and the second rotating component 300 rotate around the base 100 on the same virtual rotation axis, it can be ensured that when the second rotating component 300 and the connecting block 220 are tightly fitted along the x-axis, the second rotating component 300 can still rotate around the base 100.

[0217] Figure 25 is a schematic diagram of the structure of the second rotating member and connecting block provided in an embodiment of this application. In Figure 25(a), the structure is shown in the unfolded state, and in Figure 25(b), the structure is shown in the folded state.

[0218] As shown in Figures 11 and 25(a), the connecting block 220 also includes a relief groove 222; the relief groove 222 is located on the side of the first slide groove 221 away from the slider 400 along the y-axis direction and is connected to the first slide groove 221.

[0219] The second rotating member 300 also includes a protrusion 304, which protrudes relative to the sliding member 302 along a first direction. That is, the sliding member 302 is located at one end of the rotating member 301, the first side end 3022 of the sliding member 302 is coplanar with the side surface of the third rotating structure 303 of the rotating member 301, and the length of the sliding member 302 along the y-axis is less than the maximum length of the rotating member 301 along the y-axis, so that the protrusion 304 is formed at the end of the rotating member 301 opposite to the sliding member 400.

[0220] When the rotating shaft mechanism is in the deployed state, the first side end 3022 of the sliding part 302 in the second rotating member 300 has a first distance L1 between it and the first side wall 2212 of the first slide groove 221 in the connecting block 220, and the second side end 3023 of the sliding part 302 has a second distance L2 between it and the second side wall 2213 of the first slide groove 221. The first side end 3022 and the second side end 3023 are opposite each other, and their extension directions are both parallel to the x-axis direction.

[0221] The first distance L1 is less than the second distance L2. The first distance L1 is greater than or equal to 0, and the second distance L2 is greater than 0. The first distance L1 can be 0. In this scenario, the first side end 3022 of the sliding part 302 abuts against the first side wall 2212 of the first groove 221. The first distance L1 can also be non-zero. In this scenario, there is a gap between the first side end 3022 of the sliding part 302 and the first side wall 2212 of the first groove 221.

[0222] The end of the protrusion 304 has a fifth distance (not shown in the figure) from the third sidewall 2221 of the clearance groove 222. The extension direction of the third sidewall 2221 is parallel to the x-axis direction. The fifth distance can be greater than or equal to the sliding distance of the sliding part 302. The sliding distance of the sliding part 302 refers to the sliding distance of the sliding part 302 along the first direction within the first groove 221.

[0223] As shown in Figure 25(b), when the rotating shaft mechanism is in the folded state, the sliding portion 302 of the second rotating member 300 slides along the y-axis direction within the first sliding groove 221. The protrusion 304 is configured to slide into the clearance groove 222 when the second rotating member 300 slides relative to the connecting block 220 in the first direction.

[0224] In this scenario, when the fifth distance is greater than the sliding distance of the sliding part 302, the distance between the end of the protrusion 304 and the third sidewall 2221 of the clearance groove 222 gradually decreases and maintains a certain interval; when the fifth distance is equal to the sliding distance of the sliding part 302, the end of the protrusion 304 and the third sidewall 2221 of the clearance groove 222 can be reduced to an abutment state. In this way, when the rotating shaft mechanism is rotated to the folded state, the third sidewall 2221 of the clearance groove 222 can be used to stop the protrusion 304 and prevent the second rotating member 300 from shaking.

[0225] Simultaneously, a third distance L3 exists between the first side end 3022 of the sliding part 302 and the first side wall 2212 of the first slide groove 221. This third distance L3 is greater than the first distance L1, meaning the distance between the first side end 3022 of the sliding part 302 and the first side wall 2212 of the first slide groove 221 increases. A fourth distance L4 exists between the second side end 3023 of the sliding part 302 and the second side wall 2213 of the first slide groove 221. The third distance L3 is greater than the fourth distance L4, and the third distance L3 is greater than 0. The fourth distance L4 is greater than or equal to 0, and the fourth distance L4 is less than the second distance L2. When the fourth distance L4 is 0, the distance between the second side end 3023 of the sliding part 302 and the second side wall 2213 of the first slide groove 221 gradually decreases until they come into contact. When the fourth distance L4 is greater than 0, the distance between the second side end 3023 of the sliding part 302 and the second side wall 2213 of the first slide groove 221 decreases and maintains a certain interval.

[0226] When the rotating shaft mechanism rotates from the unfolded state to the folded state, the second rotating member 300 slides relative to the connecting block 220 in the direction away from the main swing arm 210 along the first sub-direction z1; when the rotating shaft mechanism rotates from the folded state to the unfolded state, the second rotating member 300 slides relative to the connecting block 220 in the direction adjacent to the main swing arm 210 along the second sub-direction z2.

[0227] Figure 26 is a second structural schematic diagram of the second rotating member provided in an embodiment of this application; Figure 27 is a third structural schematic diagram of the second rotating member provided in an embodiment of this application. Figures 26 and 27 show the structure of the second rotating member 300 from different perspectives.

[0228] As shown in Figures 26 and 27, in some embodiments, the rotating part 301 of the second rotating member 300 further includes a third helical rotating structure 305. The third helical rotating structure 305 and the third rotating structure 303 are located at opposite ends of the rotating part 301 along the y-axis direction. The third helical rotating structure 305 is located at one end of the rotating part 301 away from the sliding member 400.

[0229] The third helical rotation structure 305 includes a fifth helical segment 3051 and a sixth helical segment 3052. The fifth helical segment 3051 is adjacent to the support rod 1021 of the bracket 102, and the sixth helical segment 3052 is adjacent to the connecting block 220.

[0230] Referring to Figure 19, the fifth helical segment 3051 is concave towards the slider 400 along the y-axis, while the sixth helical segment 3052 protrudes away from the slider 400 along the y-axis. Both the fifth and sixth helical segments 3051 and 3052 are inclined relative to the y-axis, and they are smoothly connected to form an inclined third helical surface. Along the first direction, from the fifth helical segment 3051 to the sixth helical segment 3052 of the second rotating member 300, the third helical surface gradually inclines away from the slider 400, and the sixth helical segment 3052 moves away from the slider 400 relative to the fifth helical segment 3051 along the first direction. In other words, the third helical surface gradually inclines towards the helical sliding support 500, and the sixth helical segment 3052 moves closer to the helical sliding support 500 relative to the fifth helical segment 3051 along the first direction.

[0231] Referring to Figure 7, in the rotating shaft mechanism, the extension direction of the third helical surface of the third helical rotating structure 305 of the two second rotating members 300 located on opposite sides of the base 100 is symmetrical with respect to the first direction (y-axis). The third helical surfaces of the two second rotating members 300 form an angle away from the fixed bracket 1022 (not shown in the figure).

[0232] This can be understood as follows: the third helical rotation structure 305 is formed by recessing the end of the rotating part 301 away from the sliding member 400 along the axial direction into the rotating part 301 in an inclined helical structure, thus creating a receiving space (not shown in the figure). This receiving space can accommodate components located on one side of the second rotating member 300, such as the helical sliding bracket 500 described below. This reduces the space occupied by each component in the y-axis direction of the rotating shaft mechanism.

[0233] The extension direction of the first helical surface of the main swing arm 210 is different from the extension direction of the third helical surface of the second rotating component 300. In other words, the first helical surface and the third helical surface have different directions of rotation.

[0234] In this way, when the main swing arm 210 rotates around the base 100, the second rotating member 300 and the sliding member 400 can slide in the same direction along the y-axis to ensure synchronization. It can also prevent the main swing arm 210 and the second rotating member 300 from dislodging from the base 100 during rotation or drop, and also prevent the second rotating member 300 from dislodging from the corresponding connecting block 220, thus improving impact resistance reliability.

[0235] Referring again to Figures 7 and 8, in some embodiments, the rotating shaft mechanism further includes a helical sliding bracket 500; the helical sliding bracket 500 is located on the side of the second rotating member 300 opposite to the sliding member 400 along the axial direction. The helical sliding bracket 500 is located on the base 100 and remains stationary relative to the base 100. For example, the helical sliding bracket 500 can be snapped onto the bracket 102.

[0236] The spiral sliding bracket 500 is configured to rotate in a spiral engagement with the second rotating member 300, and to engage with the sliding member 400 to allow the second rotating member 300 to slide relative to the connecting block 220 in a first direction, and to rotate about the base 100.

[0237] Figure 28 is a first structural schematic diagram of the spiral sliding bracket provided in an embodiment of this application; Figure 29 is a second structural schematic diagram of the spiral sliding bracket provided in an embodiment of this application. Figures 28 and 29 show the structure from different perspectives.

[0238] As shown in Figures 28 and 29, the spiral sliding bracket 500 includes a first spiral body 500-1 and a second spiral body 500-2. The first spiral body 500-1 and the second spiral body 500-2 are connected along the x-axis and located on opposite sides of the bracket 102, with a first groove 503 formed at their connection. Referring to Figure 7, the first spiral body 500-1 rotates in a spiral engagement with the first auxiliary swing arm 300-1, and the second spiral body 500-2 rotates in a spiral engagement with the second auxiliary swing arm 300-2.

[0239] The spiral sliding bracket 500 also includes two fixing blocks 504, which are located at the ends of the two spiral bodies along the x-axis. Referring again to Figure 10, the bracket 102 includes two fixing holes 1025, which are located on the inner sides of the ends of the bracket 102 along the x-axis. Figure 10 only shows the fixing hole 1025 on the left side; the fixing hole 1025 on the right side is not shown because it is currently obscured.

[0240] Referring to Figure 21, the side of the bracket 102 facing the shaft cover 101 includes a second groove 1027, which is located on the side surface of the support rod 1021 facing the shaft cover 101.

[0241] When the helical sliding bracket 500 is installed on the bracket 102, the two fixing blocks 504 of the helical sliding bracket 500 correspond one-to-one with the two fixing holes 1025 of the bracket 102, and the fixing blocks 504 are embedded into the fixing holes 1025 respectively; furthermore, the connection between the first helical body 500-1 and the second helical body 500-2 is located between the bracket 102 and the shaft cover 101, and is located in the second groove 1027, while the support rod 1021 is embedded in the first groove 503. In this way, the helical sliding bracket 500 can be fixed on the bracket 102.

[0242] It should be noted that the number of spiral sliding brackets 500 can be at least one, and the number of spiral sliding brackets 500 is the same as the number of sets of the second rotating component 300.

[0243] The structures of the first helix 500-1 and the second helix 500-2 are symmetrical with respect to the axial direction (y-axis direction). The following description uses only the structure of one of the helices as an example to illustrate its structural characteristics.

[0244] The side of the helical body facing the second rotating member 300 includes a fourth helical rotating structure 501 and a second arcuate groove 502, the second arcuate groove 502 being located between the bottom end of the fourth helical rotating structure 501 and the helical sliding support 500. The third helical rotating structure 305 of the second rotating member 300 rotates in a helical engagement with the fourth helical rotating structure 501.

[0245] Figure 30 is a structural schematic diagram of the EE section in Figure 7.

[0246] As shown in Figures 26, 29 and 30, the rotating part 301 of the second rotating member 300 also includes a second boss 307. The second boss 307 extends relative to the third helical rotating structure 305 in the direction of the helical sliding support 500 along the y-axis and has an arc-shaped structure.

[0247] The spiral sliding bracket 500 and the second rotating member 300 slide in a spiral groove engagement manner. The second boss 307 on the rotating part 301 of each second rotating member 300 is embedded in the second arc groove 502 of each spiral sliding bracket 500. The fourth spiral rotating structure 501 of the spiral sliding bracket 500 and the third spiral rotating structure 305 of the second rotating member 300 rotate in a spiral engagement manner to realize the spiral engagement rotation between the second rotating member 300 and the spiral sliding bracket 500.

[0248] The spiral sliding bracket 500 is further configured such that when the second rotating member 300 is subjected to a force from the sliding member 400 along the first direction, the third spiral rotating structure 305 and the fourth spiral rotating structure 501 spirally rotate, causing the second rotating member 300 to slide relative to the connecting block 220 along the first direction and rotate around the base 100.

[0249] For example, when the second rotating member 300 is subjected to a force from the sliding member 400 along the first direction, the fourth spiral rotating structure 501 of the first spiral body 500-1 and the third spiral rotating structure 305 of the first auxiliary swing arm 300-1 rotate spirally, and the fourth spiral rotating structure 501 of the second spiral body 500-2 and the third spiral rotating structure 305 of the second auxiliary swing arm 300-2 rotate spirally, so that the first auxiliary swing arm 300-1 and the second auxiliary swing arm 300-2 slide synchronously relative to their respective connected connecting blocks 220 along the first direction, and rotate around the base 100.

[0250] In this way, since the spiral sliding bracket 500 is fixed to the bracket 102, the spiral sliding bracket 500 will not be displaced when subjected to the force of the second rotating member 300, thus preventing the shaft mechanism from becoming misaligned. This also prevents the second rotating member 300 from detaching from the spiral sliding bracket 500 during a fall. Furthermore, the third rotating structure 303 of the second rotating member 300 is embedded in the receiving space between the second rotating structure 402 of the sliding member 400 and the bracket 102, and the second protrusion 307 of the second rotating member 300 is embedded one-to-one in the second arcuate groove 502 of the spiral sliding bracket 500. Thus, the second rotating member 300 can be limited by the sliding member 400, the spiral sliding bracket 500, and the bracket 102, ensuring that the second rotating member 300 only slides along the first direction and rotates around the base 100, without any other movement, thus avoiding affecting the synchronization effect.

[0251] Figure 31 is a third structural schematic diagram of the spiral sliding bracket provided in an embodiment of this application.

[0252] As shown in Figure 31, the fourth helical rotation structure 501 includes a seventh helical segment 5011 and an eighth helical segment 5012. The seventh helical segment 5011 is adjacent to the first groove 503 and also adjacent to the support rod 1021; the eighth helical segment 5012 is away from the first groove 503 and adjacent to the connecting block 220.

[0253] The seventh helical segment 5011 protrudes towards the second rotating member 300 along the y-axis, while the eighth helical segment 5012 is recessed away from the second rotating member 300 along the y-axis. Both the seventh helical segment 5011 and the eighth helical segment 5012 are inclined relative to the y-axis, and they are smoothly connected to form an inclined fourth helical surface. Along the first direction, from the seventh helical segment 5011 to the eighth helical segment 5012 of the helical sliding support 500, the fourth helical surface gradually inclines away from the second rotating member 300, and the eighth helical segment 5012 moves away from the second rotating member 300 relative to the seventh helical segment 5011 along the first direction.

[0254] Referring to Figure 7, in the rotating shaft mechanism, the first helical body 500-1 and the second helical body 500-2 are located on opposite sides of the base 100 along the first direction; the first helical body 500-1 and the second helical body 500-2 each include a fourth helical surface, and the two fourth helical surfaces are oriented one-to-one toward the two second rotating members 300 located on opposite sides of the base 100. The extension direction of the two fourth helical surfaces is symmetrical with respect to the first direction (y-axis), and the fourth helical surfaces of the two helical bodies form an angle away from the fixed bracket 1022 (not shown in the figure).

[0255] The extension direction of the fourth helical surface of the fourth helical rotation structure 501 is parallel to the extension direction of the third helical surface of the third helical rotation structure 305 of the second rotating member 300, and the rotation direction of the fourth helical surface of the fourth helical rotation structure 501 is the same as the rotation direction of the third helical surface of the third helical rotation structure 305 of the second rotating member 300. This allows for helical engagement and rotation between the helical sliding bracket 500 and the second rotating member 300, and also facilitates the insertion of one end of the helical sliding bracket 500 into the receiving space formed by the corresponding third helical rotation structure 305 of the second rotating member 300. This receiving space can accommodate the helical sliding bracket 500, reducing the space occupied by each component in the y-axis direction of the rotating shaft mechanism, and further allows the second rotating member 300 and the main swing arm 210 to abut or have a small gap in the y-axis direction when in the unfolded state.

[0256] The extension direction of the first helical surface of the main swing arm 210 is different from the extension direction of the fourth helical surface of the helical sliding bracket 500. In other words, the first helical surface and the fourth helical surface have different directions of rotation.

[0257] In this way, by using the spiral sliding bracket 500 to hold the second rotating member 300 against it, the second rotating member 300 and the sliding member 400 can slide in the same direction along the y-axis when the main swing arm 210 rotates around the base 100, so as to ensure the synchronization effect. It can also prevent the main swing arm 210 and the second rotating member 300 from dislodging from the base 100 when rotating or falling, and also prevent the second rotating member 300 from dislodging from the corresponding connecting block 220, thereby improving the impact resistance reliability.

[0258] In the helical sliding bracket 500, the fourth helical surface of the fourth helical rotating structure 501 is helically engaged with the third helical surface of the corresponding second rotating component 300's third helical rotating structure 305, meaning the seventh helical segment 5011 is opposite to the fifth helical segment 3051, and the eighth helical segment 5012 is opposite to the sixth helical segment 3052. Thus, when the rotating shaft mechanism rotates, the helical sliding bracket 500 and the second rotating component 300 achieve helical rotation.

[0259] Referring again to Figure 19, when the rotating shaft mechanism is in the unfolded state, the seventh spiral segment 5011 of the spiral sliding bracket 500 abuts against the fifth spiral segment 3051 of the second rotating member 300, and the eighth spiral segment 5012 of the spiral sliding bracket 500 abuts against the sixth spiral segment 3052 of the second rotating member 300.

[0260] Referring again to Figures 23(a) and (b), when the rotating shaft mechanism rotates from the unfolded state to the folded state, the main swing arm 210 rotates around the base 100 to a vertical state, pushing the slider 400 to slide along the y-axis towards the second rotating member 300, that is, the slider 400 slides along the first sub-direction z1. At the same time, the second rotating member 300 is subjected to the force of the corresponding slider 400 along the first sub-direction z1, and the connecting block 220 rotates around the base 100 with the rotation of the main swing arm 210. The second rotating member 300 is also subjected to the force applied by the corresponding connecting block 220 when it rotates with the main swing arm 210, so that the third rotating structure 303 of the second rotating member 300 rotates in an arc relative to the second rotating structure 402 of the slider 400, and the second rotating member 300 tends to move towards the spiral sliding bracket 500. The spiral sliding bracket 500 is fixed relative to the bracket 102, causing the fifth spiral segment 3051 of the second rotating member 300 to slide from contact with the seventh spiral segment 5011 of the spiral sliding bracket 500 to contact with the eighth spiral segment 5012. Since the eighth spiral segment 5012 is away from the second rotating member 300 along the first sub-direction z1 relative to the seventh spiral segment 5011, and the eighth spiral segment 5012 is recessed in the direction away from the second rotating member 300, the second rotating member 300 slides relative to the fourth spiral rotating structure 501 of the spiral sliding bracket 500 along the first sub-direction z1, thereby driving the sliding part 302 to slide along the first sub-direction z1 in the first groove 221 of the connecting block 220.

[0261] When the rotating shaft mechanism rotates from a folded state to an unfolded state, the main swing arm 210 rotates around the base 100 to the unfolded state, and simultaneously drives the second rotating component 300 to rotate around the base 100 via the connecting block 220. The third helical surface of the third helical rotating structure 305 in the second rotating component 300 rotates in a helical engagement with the fourth helical surface of the fourth helical rotating structure 501 in the helical sliding bracket 500, causing the fifth helical segment 3051 of the second rotating component 300 to slide from contact with the eighth helical segment 5012 of the helical sliding bracket 500 to contact with the seventh helical segment 5011. The eighth helical segment 5012 of the helical sliding bracket 500 then contacts the sixth helical segment 3052 of the second rotating component 300. Since the seventh helical segment 5011 is close to the second rotating component 300 and protrudes towards the second rotating component 300, when the seventh helical segment 5011 contacts the fifth helical segment 3051 of the second rotating component 300, a force in the second sub-direction z2 is applied to the second rotating component 300.

[0262] The rotation of the third rotating structure 303 of the second rotating member 300 and the arc groove of the second rotating structure 402 of the sliding member 400 causes the sliding member 400 to move along the second sub-direction z2. Referring again to Figures 14(a) and (b), the fourth helical segment 4012 of the sliding member 400 slides from contact with the first helical segment 2141 of the main swing arm 210 to contact with the second helical segment 2142, and the first helical segment 2141 of the main swing arm 210 slides to contact with the third helical segment 4011 of the sliding member 400. Since the main swing arm 210 does not move in the y-axis direction, the second helical segment 2142 moves away from the sliding member 400 along the second sub-direction z2, and the second helical segment 2142 is concave along the second sub-direction z2, so that the sliding member 400 is subjected to the force of the second rotating member 300 along the second sub-direction z2, and slides along the second sub-direction z2. At this point, the rotating shaft mechanism rotates to the unfolded state, as shown in Figure 20.

[0263] In this way, the spiral sliding bracket 500 and the second rotating member 300 rotate in a spiral engagement. During rotation, the fourth spiral rotating structure 501 of the spiral sliding bracket 500 and the corresponding second rotating member 300 drive the third spiral rotating structure 305 to rotate, causing the contact position between the two to change. At the same time, the connecting part 302 of the second rotating member 300 can slide along the axial direction (y-axis) while the second rotating member 300 rotates along the z-axis.

[0264] One end of the second rotating member 300 rotates in an arc with the sliding member 400, while the other end rotates in a helical engagement with the helical sliding bracket 500, forming an inverted structure. This prevents the second rotating member 300 from detaching from the bracket 102 during rotation or a fall, improving its impact resistance and reliability.

[0265] When the hinge mechanism switches between the folded and unfolded states, neither the main swing arm 210 nor the spiral sliding bracket 500 moves along the axial direction. The spiral rotation of the main swing arm 210 and the slider 400, as well as the spiral rotation of the second rotating member 300 and the spiral sliding bracket 500, ensures that the movement of the slider 400 and the second rotating member 300 along the axial direction Z0 does not occupy the space in the axial direction Z0. Furthermore, the close contact (centralized layout) of all components between the fixed bracket 1022 and the spiral sliding bracket 500 further reduces the space occupied in the axial direction Z0 of the hinge mechanism. This is beneficial for the miniaturization of the hinge mechanism and the development of thinner and lighter electronic devices.

[0266] The rotating shaft mechanism provided in this application embodiment allows each second rotating component 300 to rotate helically and circularly as a whole with other structural components. This enables the second rotating component 300 to rotate around the base 100 and slide relative to the connecting block 220 along the y-axis. The helical rotation of the second rotating component 300 in conjunction with the helical sliding bracket 500 eliminates the need to divide the second rotating component 300 into two sub-arms during installation. This not only improves the strength of the second rotating component 300 but also avoids the risks of center-to-center arching and jamming that can easily occur when two sub-arms move together. Furthermore, it reduces y-axis misalignment and torsional misalignment, thereby improving synchronization.

[0267] Figure 32 is a schematic diagram of the structure of the first pre-tightening mechanism provided in an embodiment of this application. Figure 32 shows a portion of the structure in Figure 7.

[0268] As shown in Figures 7 and 32, in some embodiments, the rotating shaft mechanism further includes a first preload mechanism 601.

[0269] The first pre-tightening mechanism 601 is located on the side of the spiral sliding bracket 500 away from the second rotating member 300. One end of the first pre-tightening mechanism 601 abuts against the spiral sliding bracket 500, and the other end is fixed to the base 100.

[0270] For example, a fixing seat 602 is fixedly mounted on the bracket 102, and the other end of the first pre-tightening mechanism 601 is fixed to the fixing seat 602. The bracket 102 and the fixing seat 602 can be an integral structure, or they can be fixed by means of screws, welding or adhesive.

[0271] The first pre-tensioning mechanism 601 can be a spring, and there can be two first pre-tensioning mechanisms 601, which are located on opposite sides of the support rod 1021 along the x-axis. One of the first pre-tensioning mechanisms 601 is fixed between the first helical body 500-1 and the fixed seat 602, and the other first pre-tensioning mechanism 601 is fixed between the second helical body 500-2 and the fixed seat 602.

[0272] The first pre-tightening mechanism 601 is configured to press the spiral sliding bracket 500, the second rotating member 300, the sliding member 400, the main swing arm 210 and the fixed bracket 1022 along the first direction.

[0273] In this way, the first pre-tensioning mechanism 601 can achieve spring pre-tensioning, realizing the function of pre-pressing each swing arm towards the axis, reducing the pressing play on both sides of the rotating shaft (x-axis direction). The first pre-tensioning mechanism 601 can prevent each swing arm from offsetting except for rotating around the bracket 102, and can also compensate for the gaps caused by rotational wear of each component, so that each component abuts more tightly in the y-axis direction.

[0274] Because the spiral sliding bracket 500 is snap-fitted to the bracket 102, when the second rotating member 300 rotates spirally relative to the spiral sliding bracket 500, the spiral sliding bracket 500 may experience slight wobbling in the first direction, causing loosening along the y-axis between the spiral sliding bracket 500, the second rotating member 300, the sliding member 400, and the main swing arm 210. This situation not only affects the synchronous rotation effect of the rotating shaft mechanism but also causes the main swing arm 210 and the second rotating member 300 to disengage relative to the bracket 102 when rotating around the base 100 and / or falling, as well as the second rotating member 300 to disengage relative to the connecting block 220.

[0275] In this embodiment, the first pre-tightening mechanism 601 ensures that the spiral sliding bracket 500, the second rotating member 300, the sliding member 400, and the main swing arm 210 remain tightly fitted along the y-axis. It also compensates for gaps between components caused by wear during rotation, further ensuring a tighter fit between the spiral sliding bracket 500, the second rotating member 300, the sliding member 400, and the main swing arm 210 along the y-axis, thus improving impact resistance and reliability. Furthermore, when the electronic device is held at a certain open angle during rotation, the clamping function of the first pre-tightening mechanism 601 ensures the structural stability of the electronic device at these open angle positions.

[0276] In some embodiments, the rotating shaft mechanism further includes a second pre-tensioning mechanism, which is not shown in the figure. The structure of the second pre-tensioning mechanism may be the same as that of the first pre-tensioning mechanism 601, except that the position of the mechanism is different.

[0277] The second pre-tightening mechanism is located on the side of the fixed bracket 1022 opposite to the main swing arm 210. One end of the second pre-tightening mechanism abuts against the fixed bracket 1022, and the other end is fixed to the base 100. The second pre-tightening mechanism is configured to press the spiral sliding bracket 500, the second rotating member 300, the sliding member 400, the main swing arm 210, and the fixed bracket 1022 along the first direction. The function of the second pre-tightening mechanism is the same as that of the first pre-tightening mechanism 601, and will not be described in detail here.

[0278] In some embodiments, the rotating shaft mechanism may further include a first pre-tensioning mechanism 601 and a second pre-tensioning mechanism, which cooperate to press the spiral sliding bracket 500, the second rotating member 300, the sliding member 400, the main swing arm 210, and the fixed bracket 1022 along a first direction. It should be noted that the positions of the first pre-tensioning mechanism 601 and the second pre-tensioning mechanism can be referred to the description in the foregoing embodiments, and will not be repeated here.

[0279] In this way, the rotating shaft mechanism can be equipped with a single-sided pre-tightening mechanism (either the first pre-tightening mechanism 601 or the second pre-tightening mechanism can be set), or a double-sided pre-tightening mechanism (the first pre-tightening mechanism 601 and the second pre-tightening mechanism can be set at the same time) to improve the clamping effect of the spiral sliding bracket 500, the second rotating member 300, the sliding member 400 and the main swing arm 210 in the y-axis direction, so as to improve the impact resistance reliability.

[0280] In some embodiments, the positions of the fixed bracket 1022 and the spiral sliding bracket 500 on the bracket 102 can be interchanged, that is, the spiral sliding bracket 500 is set on the side of the main swing arm 210 away from the sliding member 400, and the fixed bracket 1022 is set on the side of the second rotating member 300 away from the sliding member 400. Correspondingly, the arc-shaped rotating structure and the spiral rotating structure in the main swing arm 210, the second rotating member 300, and the sliding member 400 are also interchanged. In this structure of the rotating shaft mechanism, for the structure of the connecting block 220, the positions of the first sidewall 2212 and the second sidewall 2213 of the first groove 221 are opposite, that is, the first sidewall 2212 is away from the main swing arm 210 along the first direction, and the second sidewall 2213 is adjacent to the main swing arm 210 along the first direction. Regarding the structure of the second rotating member 300, the first side end 3022 and the second side end 3023 of the sliding part 302 are in opposite positions. That is, the second side end 3023 of the sliding part 302 is close to the sliding member 400 along the y-axis direction, and the first side end 3022 is away from the sliding member 400 along the y-axis direction. During the process from the unfolded state to the folded state, the sliding direction of the sliding member 400 and the second rotating member 300 is opposite to the sliding direction in the same scenario of the aforementioned embodiment. Similarly, during the process from the folded state to the unfolded state, the sliding direction of the sliding member 400 and the second rotating member 300 is opposite to the sliding direction in the same scenario of the aforementioned embodiment. The structure and synchronization principle of this rotating mechanism can be referred to the content of the aforementioned embodiment, and will not be repeated here.

[0281] In the rotating shaft mechanism provided in this embodiment, the first rotating member 200 and the second rotating member 300 no longer rotate around the base 100 using a solid shaft, nor do they use a solid shaft and gear structure for synchronization. Both the first rotating member 200 and the second rotating member 300 rotate around the base 100 using a virtual rotating shaft connection, and the sliding member 400 is slidably connected to the base 100, no longer using a solid shaft connection. This allows the first rotating member 200, the second rotating member 300, and the sliding member 400 to achieve synchronization using a virtual shaft spiral method. This avoids occupying space in the area of ​​the shaft cover 101, does not affect the wall thickness of the shaft cover 101 to ensure its strength, and also achieves miniaturization of the rotating shaft mechanism.

[0282] The main swing arm 210, the sliding member 400, and the second rotating member 300 abut and rotate in coordination along the axial direction to form a rotating assembly that combines synchronization and motion control functions with the connecting block 220. This not only reduces the space occupied in the y-axis direction but also improves the synchronization effect and shaft strength, and enhances impact resistance during drops. The second rotating member 300, which uses a helical rotation method, is a complete structure, avoiding problems such as axial misalignment, central arching, and jamming that often occur when two auxiliary swing arms work together.

[0283] The second rotating component 300 makes slight contact with or has a small gap with the connecting block 220 in the x-axis direction to support the connecting block 220. This not only prevents the second rotating component 300 from dislodging from the first groove 221 of the connecting block 220 during a drop, but also prevents the electronic device from experiencing misalignment in the pivot area, thus avoiding the problem of the display screen 30 arching backwards. During a drop, there is no relative movement between the connecting block 220 and the second rotating component 300; the connecting block 220 will not drive the device body towards the pivot cover 101, thereby preventing the display screen 30 from impacting the base 100, preventing damage to the display screen 30 and improving the user experience.

[0284] Referring again to Figure 1, this application embodiment also provides an electronic device, including a display screen 30, a first body 10, a second body 20, and a pivot mechanism as provided in any of the foregoing embodiments.

[0285] The first body 10 and the second body 20 are located on opposite sides of the axis of the rotating shaft mechanism. The first body 10 and the second body 20 are respectively connected to the rotating shaft mechanism. The display screen 30 covers the first body 10, the second body 20 and the rotating shaft mechanism. The first body 10 and the second body 20 rotate as the rotating shaft mechanism folds or unfolds, so as to drive the display screen 30 to fold or unfold.

[0286] It should be noted that the structure of the electronic device can be referred to the structure of the electronic device shown in Figure 1, which will not be repeated here.

[0287] The electronic device provided in this application embodiment has a rotating shaft mechanism that can rotate synchronously and has good impact resistance and reliability. Each component will not fall off from its connected components, thus avoiding the rotating shaft mechanism from causing the display screen 30 to impact the base 100, thereby preventing the display screen 30 from failing and improving the user experience.

[0288] It is readily understood that, based on the several embodiments provided in this application, those skilled in the art can combine, split, or reorganize the embodiments of this application to obtain other embodiments, none of which exceed the protection scope of this application.

[0289] The above specific embodiments further illustrate the purpose, technical solution and beneficial effects of this application. It should be understood that the above are only specific embodiments of this application and are not intended to limit the scope of protection of this application. Any modifications, equivalent substitutions, improvements, etc., made on the basis of the technical solution of this application should be included within the scope of protection of this application.

Claims

1. A rotating shaft mechanism, characterized in that, include: Base (100); The first rotating component (200) rotates in conjunction with the base (100); The second rotating member (300) has one end that rotates around the base (100) and the other end that is slidably connected to the first rotating member (200); A sliding member (400) is slidably connected to the base (100) and is located between the first rotating member (200) and the second rotating member (300) along a first direction. The sliding member (400) abuts against the first rotating member (200) and the second rotating member (300) respectively. During the rotation of the first rotating member (200) around the base (100), the first rotating member (200) drives the sliding member (400) to slide along the first direction, so that the second rotating member (300) rotates around the base (100) and slides relative to the first rotating member (200) along the first direction; Wherein, the first direction is the axial direction of the base (100).

2. The rotating shaft mechanism according to claim 1, characterized in that, The first rotating component (200) includes a main swing arm (210) and a connecting block (220); One end of the main swing arm (210) rotates in conjunction with the base (100), and the other end is connected to the connecting block (220); The second rotating member (300) is located on one side of the main swing arm (210) along the first direction and is connected to the connecting block (220); The sliding member (400) is located between the main swing arm (210) and the second rotating member (300) along the first direction. The sliding member (400) rotates in a spiral engagement with the main swing arm (210) and rotates in an arc engagement with the second rotating member (300).

3. The rotating shaft mechanism according to claim 2, characterized in that, The main swing arm (210) includes a rotating part (211) and a connecting part (212). The rotating part (211) rotates in cooperation with the base (100), and the connecting part (212) is connected to the connecting block (220). The rotating part (211) includes a first rotating structure (213) and a first helical rotating structure (214). The first rotating structure (213) is configured to rotate in an arc with the base (100), and the first helical rotating structure (214) is configured to rotate in a helical manner with the slider (400).

4. The rotating shaft mechanism according to claim 3, characterized in that, The sliding member (400) includes a second helical rotation structure (401) and a second rotation structure (402); The second helical rotation structure (401) and the first helical rotation structure (214) rotate in a helical cooperation, and the second rotation structure (402) is configured to rotate in an arc cooperation with the second rotating member (300); The sliding member (400) is configured to slide along the first direction when the first rotating member (200) rotates around the base (100) under the force of the first helical rotating structure (214) and the second helical rotating structure (401) rotating in a helical manner.

5. The rotating shaft mechanism according to claim 4, characterized in that, The second rotating member (300) includes a rotating part (301) and a sliding part (302). The rotating part (301) rotates relative to the base (100), and the sliding part (302) is slidably connected to the connecting block (220). The rotating part (301) includes: a third rotating structure (303), which rotates in an arc with the second rotating structure (402) of the sliding member (400); The second rotating member (300) is configured to be subjected to a force along the first direction when the sliding member (400) slides along the first direction, and slides relative to the connecting block (220) along the first direction.

6. The rotating shaft mechanism according to claim 5, characterized in that, The connecting block (220) includes a first groove (221), which is formed by an inwardly recessed first width of the surface of the connecting block (220) facing the base (100); The sliding part (302) of the second rotating member (300) is disposed in the first groove (221). When the second rotating member (300) rotates around the base (100), the sliding part (302) slides in the first direction in the first groove (221).

7. The rotating shaft mechanism according to claim 6, characterized in that, The first groove (221) includes a bottom surface (2211) that is away from the base (100); The sliding end (3021) of the sliding part (302) facing away from the base (100) is adjacent to the bottom surface (2211) of the first groove (221).

8. The rotating shaft mechanism according to claim 7, characterized in that, The first groove (221) further includes a first sidewall (2212) and a second sidewall (2213) opposite to each other, the first sidewall (2212) and the second sidewall (2213) being connected to the bottom surface (2211) respectively; When the rotating shaft mechanism is in the unfolded state, there is a first distance between the first side end (3022) of the sliding part (302) and the first side wall (2212), and a second distance between the second side end (3023) of the sliding part (302) and the second side wall (2213), wherein the first distance is less than the second distance; the first side end (3022) is adjacent to the sliding member (400) along the first direction, and the second side end (3023) is away from the sliding member (400) along the first direction; When the rotating shaft mechanism is in the folded state, there is a third distance between the first side end (3022) of the sliding part (302) and the first side wall (2212), and a fourth distance between the second side end (3023) of the sliding part (302) and the second side wall (2213), wherein the third distance is greater than the fourth distance; Wherein, the first distance is less than the third distance, and the second distance is greater than the fourth distance.

9. The rotating shaft mechanism according to claim 8, characterized in that, The connecting block (220) also includes a relief groove (222); The clearance groove (222) is located on the side of the first slide groove (221) opposite to the slider (400) along the first direction and is in communication with the first slide groove (221).

10. The rotating shaft mechanism according to claim 9, characterized in that, The second rotating member (300) further includes a protrusion extending relative to the sliding portion (302) along the first direction. Exit (304); The protrusion (304) is configured to slide into the relief groove (222) when the second rotating member (300) slides relative to the connecting block (220) in the first direction, with the end of the protrusion (304) close to the third sidewall (2221) of the relief groove (222).

11. The rotating shaft mechanism according to claim 4, characterized in that, Also includes: a spiral sliding bracket (500); The spiral sliding bracket (500) is located on the base (100) and on the side of the second rotating member (300) opposite to the sliding member (400); The spiral sliding bracket (500) is configured to rotate in a spiral engagement with the second rotating member (300) and to engage with the sliding member (400) such that the second rotating member (300) slides relative to the connecting block (220) in the first direction and rotates about the base (100).

12. The rotating shaft mechanism according to claim 11, characterized in that, The rotating part (301) of the second rotating member (300) further includes a third helical rotating structure (305), and the side of the helical sliding bracket (500) facing the second rotating member (300) includes a fourth helical rotating structure (501), and the third helical rotating structure (305) and the fourth helical rotating structure (501) rotate in a helical cooperation. The spiral sliding bracket (500) is further configured such that when the second rotating member (300) is subjected to a force from the sliding member (400) along the first direction, the third spiral rotating structure (305) and the fourth spiral rotating structure (501) rotate in a spiral engagement, causing the second rotating member (300) to slide relative to the connecting block (220) along the first direction and rotate about the base (100).

13. The rotating shaft mechanism according to claim 12, characterized in that, The first helical rotation structure (214) of the first rotating member (200) has a first helical surface, the second helical rotation structure (401) of the sliding member (400) has a second helical surface, the third helical rotation structure (305) of the second rotating member (300) has a third helical surface, and the fourth helical rotation structure (501) of the helical sliding bracket (500) has a fourth helical surface; The extension direction of the first helical surface is the same as that of the second helical surface, and the extension direction of the first helical surface is different from that of the fourth helical surface. The extension direction of the third helical surface is the same as that of the fourth helical surface, but the extension direction of the third helical surface is different from that of the second helical surface.

14. The rotating shaft mechanism according to claim 11, characterized in that, The base (100) includes stacked shaft caps (101) and brackets (102), the brackets (102) including support rods (1021) whose length direction is parallel to the first direction; The slider (400) further includes a second groove (403), the length direction of which is parallel to the first direction; The support rod (1021) is embedded in the second groove (403) to enable the sliding member (400) to slide along the base (100).

15. The rotating shaft mechanism according to claim 14, characterized in that, The second groove (403) is located on the side surface of the slider (400) opposite to the bracket (102); The surface of the support rod (1021) facing the shaft cover (101) includes a third groove (1026), the length direction of the third groove (1026) is parallel to the first direction, and the length of the third groove (1026) is greater than the length of the second groove (403); The sliding member (400) is located between the shaft cover (101) and the bracket (102) and is located in the third slide groove (1026). The support rod (1021) is embedded in the second slide groove (403) to realize the sliding member (400) sliding along the base (100).

16. The rotating shaft mechanism according to claim 14, characterized in that, The bracket (102) includes a fourth slide groove, the length direction of which is parallel to the first direction; The slider (400) includes a slider block, the length direction of which is parallel to the first direction; The length of the fourth groove is greater than the length of the sliding block; The sliding block is configured to be embedded in the fourth sliding groove and slide within the fourth sliding groove to enable the sliding member (400) to slide along the base (100).

17. The rotating shaft mechanism according to claim 14, characterized in that, The bracket (102) includes a fixed bracket (1022), which is connected to the support rod (1021) and is located on the side of the main swing arm (210) away from the sliding member (400); The fixed bracket includes a fourth rotating structure (10221), which is configured to rotate in an arc with the first rotating structure (213) of the main swing arm (210).

18. The rotating shaft mechanism according to claim 15, characterized in that, It also includes: a first pre-tensioning mechanism (600); The first pre-tightening mechanism (600) is located on the side of the spiral sliding bracket (500) away from the second rotating member (300). One end of the first pre-tightening mechanism (600) abuts against the spiral sliding bracket (500), and the other end is fixed to the base (100). The first pre-tightening mechanism (600) is configured to press the spiral sliding bracket (500), the second rotating member (300), the sliding member (400), the first rotating member (200), and the fixed bracket (1022) along the first direction.

19. The rotating shaft mechanism according to claim 17 or 18, characterized in that, It also includes: a second pre-tensioning mechanism; The second pre-tightening mechanism is located on the side of the fixed bracket (1022) away from the main swing arm (210). One end of the second pre-tightening mechanism abuts against the fixed bracket (1022), and the other end is fixed to the base (100). The second pre-tightening mechanism is configured to press the spiral sliding bracket (500), the second rotating member (300), the sliding member (400), the first rotating member (200), and the fixed bracket (1022) along the first direction.

20. The rotating shaft mechanism according to claim 13, characterized in that, The number of main swing arms (210) is at least two, and at least two of the main swing arms (210) are located on the base. (100) on opposite sides along the first direction, and rotating in cooperation with the base (100); The extension direction of the first helical surface of the main swing arm (210) located on opposite sides of the base (100) is symmetrical with respect to the first direction.

21. The rotating shaft mechanism according to claim 13, characterized in that, The number of the second rotating members (300) is at least two, and the at least two second rotating members (300) are located on opposite sides of the base (100) along the first direction and rotate in cooperation with the base (100); The extension direction of the third helical surface of the second rotating member (300) located on opposite sides of the base (100) is symmetrical with respect to the first direction.

22. The rotating shaft mechanism according to claim 13, characterized in that, The slider (400) includes a first slider (400-1) and a second slider (400-2), the first slider (400-1) and the second slider (400-2) being located on opposite sides of the base (100) along the first direction; The first sliding body (400-1) and the second sliding body (400-2) each include a second helical surface. The two second helical surfaces are oriented one-to-one toward the two main swing arms (210) located on opposite sides of the base (100). The extension directions of the two second helical surfaces are symmetrical with respect to the first direction.

23. The rotating shaft mechanism according to claim 13, characterized in that, The spiral sliding bracket (500) includes a first spiral body (500-1) and a second spiral body (500-2), the first spiral body (500-1) and the second spiral body (500-2) being located on opposite sides of the base (100) along the first direction; The first helical body (500-1) and the second helical body (500-2) each include the fourth helical surface. The two fourth helical surfaces are oriented one-to-one toward the two second rotating members (300) located on opposite sides of the base (100). The extension directions of the two fourth helical surfaces are symmetrical with respect to the first direction.

24. An electronic device, characterized in that, include: The display screen, the first body, the second body, and the rotating shaft mechanism as described in any one of claims 1-23; The first fuselage and the second fuselage are located on opposite sides of the axis of the rotating shaft mechanism, and the first fuselage and the second fuselage are respectively connected to the rotating shaft mechanism; The display screen covers the first body, the second body, and the pivot mechanism. The first body and the second body rotate as the pivot mechanism bends or unfolds, thereby causing the display screen to bend or unfold.

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