Rotating shaft mechanism and electronic device

Abstract

A rotating shaft mechanism (130) and an electronic device (1000). When an electronic device (1000) falls, the rotating shaft mechanism (130) will not interfere with a display module (200) and thus damage the display module (200), improving the usage reliability of the electronic device (1000). The rotating shaft mechanism (130) comprises a base (10), a first fixing mount (21), and a first swing arm (23). The first swing arm (23) comprises a first rotating part (231) and a first sliding part (232). The first rotating part (231) is rotatably connected to the base (10). The first sliding part (232) is slidably connected to the first fixing mount (21). During the rotation of the first swing arm (23) relative to the base (10), the first sliding part (232) slides relative to the first fixing mount (21) in the length direction of the first fixing mount (21).

Description

Rotating shaft mechanism and electronic device TECHNICAL FIELD

[0001] The present application relates to the technical field of electronic devices, and in particular to a rotating shaft mechanism and an electronic device. BACKGROUND

[0002] With the progress of science and technology, the era of large-screen intelligent terminals has arrived. Foldable electronic devices are favored by users due to their large screens and convenient portability. At present, rotating shaft mechanisms are often used in electronic devices to achieve folding and unfolding, and the sliding connection between the swing arm and the fixed frame is used to meet the functional requirements of the rotating shaft mechanism. However, when the electronic device falls, the swing arm and the fixed frame will slide relative to each other, the rotating shaft mechanism will interfere with the display module, causing the display module to fail, and affecting the use reliability of the electronic device.

[0003] SUMMARY

[0004] The present application provides a rotating shaft mechanism and an electronic device, which can prevent the rotating shaft mechanism from interfering with the display module and damaging the display module when the electronic device falls, thereby improving the use reliability of the electronic device.

[0005] In a first aspect, the present application provides a rotating shaft mechanism, comprising a base, a first fixed frame and a first swing arm. The first swing arm comprises a first rotating part and a first sliding part. The first rotating part is rotationally connected to the base. The first sliding part is slidingly connected to the first fixed frame.

[0006] During the rotation of the first swing arm relative to the base, the first sliding part slides along the length direction of the first fixed frame relative to the first fixed frame.

[0007] In the rotating shaft mechanism of the present application, during the rotation of the first swing arm relative to the base, the first swing arm only slides along the length direction of the first fixed frame relative to the first fixed frame, the first swing arm and the first fixed frame are always in close cooperation, and the first swing arm can always support the first fixed frame. When the rotating shaft mechanism is used in an electronic device, when the electronic device falls, since the first swing arm does not slide along the width direction of the first fixed frame relative to the first fixed frame, the first fixed frame does not move the display module of the electronic device towards the base, and the display module does not interfere with the rotating shaft mechanism and fail, thereby improving the drop reliability of the electronic device and ensuring the use reliability of the electronic device.

[0008] In an embodiment, the first fixed frame is provided with a first sliding groove. Illustratively, the opening of the first sliding groove is located on the surface of the first fixed frame facing the base.

[0009] The first sliding part is installed in the first sliding groove and can slide along the length direction of the first fixed frame relative to the first fixed frame in the first sliding groove, so as to realize the sliding connection between the first swing arm and the first fixed frame.

[0010] Since the first swing arm cannot slide relative to the first fixed frame in the width direction of the first fixed frame, the overlap amount between the first swing arm and the first fixed frame remains unchanged, the problem of large virtual position of the first swing arm can be avoided, the problem of the first swing arm falling off the first fixed frame can be effectively avoided, the assembly stability between the first swing arm and the first fixed frame is ensured, and then the assembly stability of the rotating shaft mechanism is ensured.

[0011] The end face of the first sliding part away from the first rotating part is arranged opposite to the groove bottom wall surface of the first sliding groove, and the groove bottom wall surface of the first sliding groove is used to limit the sliding of the first sliding part in the first sliding groove in the width direction of the first fixed frame. For example, the end face of the first sliding part away from the first rotating part abuts against the groove bottom wall surface of the first sliding groove, or there is a small gap between the end face of the first sliding part away from the first rotating part and the groove bottom wall surface of the first sliding groove.

[0012] Since the end face of the first rotating part and the groove bottom wall surface of the first sliding groove limit the sliding of the first sliding part in the first sliding groove in the width direction of the first fixed frame, when the user presses from the direction of the rotating shaft mechanism to the first housing of the electronic device during use, the display module will not be redundantly stacked at the foldable part of the display module, the foldable part will not be bulged or folded back, and the display module will not be damaged, and the use reliability of the electronic device can be further ensured.

[0013] In an embodiment, the first rotating part includes a first side face, and the first rotating part is provided with a first groove, and the opening of the first groove is located on the first side face. The first groove is a spiral groove.

[0014] The base is provided with a first sliding block, and the first sliding block is screw fitted in the first groove.

[0015] During the rotation of the first swing arm relative to the base, the first sliding block slides in the first groove relative to the first rotating part, and the first rotating part can slide relative to the base in the length direction of the base under the action of the first sliding block, thereby driving the first sliding part to slide relative to the first fixed frame in the length direction of the first fixed frame.

[0016] In an embodiment, the first sliding block includes a first abutting face facing the first groove, the first abutting face is a spiral face, and the first abutting face is screw fitted with the first groove to increase the stability of the screw fitting between the first sliding groove and the first groove. The first abutting face is spirally arranged around the rotation center of the first rotating part.

[0017] In one embodiment, the first rotating part further comprises a second side surface opposite to the first side surface, and the first rotating part is further provided with a second groove, an opening of the second groove being located at the second side surface, the second groove being a spiral groove and being arranged in parallel with the first groove. The second groove is arranged spirally around the rotation center of the first rotating part.

[0018] The base is further provided with a second sliding block, the second sliding block being screw fitted in the second groove.

[0019] In the process of the first swing arm rotating relative to the base, the first rotating part rotates relative to the base in the first mounting groove, the second protrusion slides relative to the first rotating part in the second groove, and the first rotating part can slide relative to the base along the length direction of the base under the action of the second protrusion, thereby driving the first sliding part to slide relative to the first fixed frame along the length direction of the first fixed frame.

[0020] In one embodiment, the second sliding block comprises a second abutting surface facing the second groove, the second abutting surface being a spiral surface and being screw fitted with the second groove to increase the stability of the screw fitting between the second sliding groove and the second groove. The second abutting surface is arranged spirally around the rotation center of the first rotating part.

[0021] In one embodiment, the base is provided with a first mounting groove, an opening of the first mounting groove being located at the top surface of the base, a groove wall surface of the first mounting groove comprising a first groove side wall surface opposite to the first side surface, and the first sliding block being arranged at the first groove side wall surface.

[0022] The first rotating part is rotationally mounted in the first mounting groove.

[0023] In the process of the first swing arm rotating relative to the base, the first rotating part rotates relative to the base in the first mounting groove.

[0024] In one embodiment, the groove wall surface of the first mounting groove further comprises a second groove side wall surface opposite to the second side surface, and the second sliding block is arranged at the second groove side wall surface. The second groove side wall surface is spaced apart from and opposite to the first groove side wall surface along the length direction of the base.

[0025] In one embodiment, the base is further provided with a first sliding hole, an extension direction of the first sliding hole intersecting with the width direction of the base. In other words, the first sliding hole has a component along the length direction of the base. For example, the first sliding hole is arranged spirally around the rotation center of the first rotating part.

[0026] The first rotating part is provided with a first sliding column, the first sliding column being arranged at the bottom surface of the first rotating part and being slidingly mounted in the second sliding hole.

[0027] In the process of rotating the first swing arm relative to the base, the first slide post slides in the first slide hole relative to the base to drive the first swing arm to slide relative to the base along the length direction of the base, and then drive the first slide part to slide relative to the first fixed frame along the length direction of the first fixed frame.

[0028] In an implementation, the rotating shaft mechanism further comprises a second fixed frame and a second swing arm, the second swing arm comprises a second rotating part and a second slide part, the second rotating part is rotationally connected with the base, and the second slide part is slidingly connected with the second fixed frame.

[0029] In the process of rotating the second swing arm relative to the base, the second slide part slides relative to the second fixed frame along the length direction of the second fixed frame.

[0030] In the rotating shaft mechanism, in the process of rotating the second swing arm relative to the base, the second swing arm only slides relative to the second fixed frame along the length direction of the second fixed frame, the second swing arm and the second fixed frame are always in close cooperation, and the second swing arm can always support the second fixed frame. When the rotating shaft mechanism is used in an electronic device, when the electronic device falls, since the second swing arm cannot slide relative to the second fixed frame along the width direction of the second fixed frame, the second fixed frame cannot drive the display module of the electronic device to move towards the base, and the display module cannot fail due to interference with the rotating shaft mechanism, thereby improving the falling reliability of the electronic device and ensuring the use reliability of the electronic device.

[0031] In an implementation, the second fixed frame is provided with a second slide groove. Illustratively, the opening of the second slide groove is located on the surface of the second fixed frame facing the base.

[0032] The second slide part is installed in the second slide groove and can slide relative to the second fixed frame along the length direction of the second fixed frame in the second slide groove, so as to realize the sliding connection between the second swing arm and the second fixed frame.

[0033] Since the second swing arm cannot slide relative to the second fixed frame along the width direction of the second fixed frame, the overlapping amount between the second swing arm and the second fixed frame always remains unchanged, the second swing arm cannot have a large virtual position, the problem of the second swing arm falling off the second fixed frame can be effectively avoided, the assembly stability between the second swing arm and the second fixed frame is ensured, and then the assembly stability of the rotating shaft mechanism is ensured.

[0034] The end surface of the second slide part away from the second rotating part is arranged opposite to the groove bottom wall surface of the second slide groove, and the groove bottom wall surface of the second slide groove is used to limit the second slide part to slide in the second slide groove along the width direction of the second fixed frame. Illustratively, the end surface of the second slide part away from the second rotating part abuts against the groove bottom wall surface of the second slide groove, or there is a small gap between the end surface of the second slide part away from the second rotating part and the groove bottom wall surface of the second slide groove.

[0035] Due to the restriction of the groove bottom wall surface of the second sliding groove on the sliding of the second sliding part in the second sliding groove along the width direction of the second fixed frame, when the user presses the electronic device from the second shell to the rotating shaft mechanism during use, the display module will not be redundantly stacked at the foldable part of the display module, the foldable part will not be convex or folded back, the display module will not be damaged, and the use reliability of the electronic device can be further ensured.

[0036] In an embodiment, the second rotating part includes a third side surface, the second rotating part is provided with a third groove, and an opening of the third groove is located on the third side surface. The third groove is a spiral groove.

[0037] The base is further provided with a third sliding block, and the third sliding block is screwedly matched with the third groove.

[0038] During the rotation of the second swing arm relative to the base, the third sliding block slides relative to the second rotating part in the third groove, the second rotating part can slide relative to the base along the length direction of the base under the action of the third sliding block, and then drives the second sliding part to slide relative to the second fixed frame along the length direction of the second fixed frame.

[0039] In an embodiment, the third sliding block includes a third abutting surface facing the third groove, the third abutting surface is a spiral surface, and is screwedly matched with the third groove to increase the stability of the screw matching between the third sliding groove and the third groove. The third abutting surface is spirally arranged around the rotation center of the second rotating part.

[0040] In an embodiment, the second rotating part further includes a fourth side surface opposite to the third side surface, the second rotating part is further provided with a fourth groove, an opening of the fourth groove is located on the fourth side surface, the fourth groove is a spiral groove, and is arranged in parallel with the third groove. The fourth groove is spirally arranged around the rotation center of the second rotating part.

[0041] The base is further provided with a fourth sliding block, and the fourth sliding block is screwedly matched with the fourth groove.

[0042] During the rotation of the second swing arm relative to the base, the fourth sliding block slides relative to the second rotating part in the fourth groove, the second rotating part can slide relative to the base along the length direction of the base under the action of the fourth sliding block, and then drives the second sliding part to slide relative to the second fixed frame along the length direction of the second fixed frame.

[0043] In an embodiment, the fourth sliding block includes a fourth abutting surface facing the fourth groove, the fourth abutting surface is a spiral surface, and is screwedly matched with the fourth groove to increase the stability of the screw matching between the fourth sliding groove and the fourth groove. The fourth abutting surface is spirally arranged around the rotation center of the second rotating part.

[0044] In one embodiment, the base is provided with a second mounting slot, an opening of the second mounting slot is located on the top surface of the base, and a slot wall surface of the second mounting slot comprises a third slot side wall surface, and the third sliding block is arranged on the third slot side wall surface.

[0045] The second rotating part is rotatably mounted in the second mounting slot.

[0046] During the rotation of the second swing arm relative to the base, the second rotating part rotates relative to the base in the second mounting slot.

[0047] In one embodiment, the slot wall surface of the second mounting slot further comprises a fourth slot side wall surface arranged opposite to the fourth side surface, and the fourth sliding block is arranged on the fourth slot side wall surface. In the length direction of the base, the fourth slot side wall surface is arranged opposite to the third slot side wall surface.

[0048] In one embodiment, the rotating shaft mechanism further comprises a synchronous sliding block, which is mounted on the base and is slidingly connected between the first rotating part and the second rotating part and is slidingly connected with the base.

[0049] During the rotation of the first swing arm and / or the second swing arm relative to the base, the synchronous sliding block moves relative to the base in the length direction of the base.

[0050] During the rotation of the first swing arm relative to the base, the first swing arm slides relative to the base in the length direction of the base, and drives the synchronous sliding block to slide relative to the base in the length direction of the base, and the synchronous sliding block drives the second swing arm to slide relative to the base in the length direction of the base and drives the second swing arm to rotate relative to the base, thereby realizing the synchronous rotation of the first swing arm and the second swing arm relative to the base.

[0051] It can be understood that during the rotation of the second swing arm relative to the base, the second swing arm can also drive the synchronous sliding block to slide relative to the base in the length direction of the base, and the synchronous sliding block can not only drive the first swing arm to slide relative to the base in the length direction of the base, but also can drive the first swing arm to rotate relative to the base, thereby realizing the synchronous rotation of the first swing arm and the second swing arm relative to the base.

[0052] In the rotating shaft mechanism of the present application, the synchronous sliding block is slidingly connected with the first swing arm and the second swing arm, and the synchronous sliding block can not only synchronously transmit the rotation of the first swing arm relative to the base to the second swing arm, but also can synchronously transmit the rotation of the second swing arm relative to the base to the first swing arm, thereby realizing the precise synchronization of the rotating shaft mechanism.

[0053] Compared with the existing rotating shaft mechanism adopting a synchronous gear to realize synchronous rotation, in the rotating shaft mechanism, the first swing arm and the second swing arm are both realized in a spiral virtual shaft mode to realize rotation cooperation with the base, the rotating shaft mechanism does not need to design a pin shaft and a synchronous gear, which not only helps to reduce the thickness of the rotating shaft mechanism, but also reserves more thickness space to accommodate the base, the first swing arm and the second swing arm and other structural members, and the base, the first swing arm and the second swing arm and other structural members can be designed to have a larger thickness to improve the strength and rigidity of the rotating shaft mechanism.

[0054] In an embodiment, the first rotating part is provided with a third sliding groove, the third sliding groove is arranged at intervals with the first groove, and the second rotating part is provided with a fourth sliding groove.

[0055] The synchronous sliding block is provided with a third sliding part and a fourth sliding part, the third sliding part is slidably matched with the third sliding groove, and the fourth sliding part is slidably matched with the fourth sliding groove.

[0056] In an embodiment, the first swing arm includes a first sub-swing arm and a second sub-swing arm, the first sub-swing arm and the second sub-swing arm are fixedly connected and are both slidably connected with the synchronous sliding block. The first sub-swing arm and the second sub-swing arm are fixedly connected to form the first swing arm, which can improve the machining precision of the first swing arm and the assembly precision between the first swing arm and the base, and ensure the assembly stability of the rotating shaft mechanism.

[0057] The second swing arm includes a third sub-swing arm and a fourth sub-swing arm, the third sub-swing arm and the fourth sub-swing arm are fixedly connected and are both slidably connected with the synchronous sliding block. The third sub-swing arm and the fourth sub-swing arm are fixedly connected to form the second swing arm, which can improve the machining precision of the second swing arm and the assembly precision between the second swing arm and the base, and ensure the assembly stability of the rotating shaft mechanism.

[0058] In an embodiment, the first sub-swing arm is provided with a first clamping part, the first clamping part is arranged at one end of the first sub-swing arm facing the second sub-swing arm, the second sub-swing arm is provided with a second clamping part, the second clamping part is arranged at one end of the second sub-swing arm facing the first sub-swing arm, and the first clamping part and the second clamping part are clamped with each other to realize detachable connection between the first sub-swing arm and the second sub-swing arm.

[0059] In an embodiment, the base includes a shaft cover, a sliding support and a first elastic member, the sliding support is mounted on the shaft cover and can slide along the length direction of the shaft cover relative to the shaft cover, the sliding support includes a first sliding block, the first elastic member is located on the side of the sliding support away from the first sliding block and abuts against the sliding support, and is used for screwing the first sliding block into the first groove.

[0060] In the rotating shaft mechanism, the first elastic member is used to pre-tighten the abutment between the sliding support and the first swing arm, to realize the zero-gap cooperation between the first sliding block and the groove bottom wall surface of the first groove, which can greatly improve the synchronization performance of the rotating shaft mechanism, and can avoid the problem of increased gap between the sliding support and the first swing arm after long-term use of the rotating shaft mechanism, and can always ensure the synchronization performance of the rotating shaft mechanism.

[0061] In an embodiment, the sliding support further comprises a third sliding block, and the rotating shaft mechanism further comprises a second elastic member, which is located on the side of the sliding support away from the third sliding block and abuts against the sliding support, and is used to make the third sliding block screw into the third groove.

[0062] In the rotating shaft mechanism, the second elastic member is used to pre-tighten the abutment between the sliding support and the second swing arm, to realize the zero-gap cooperation between the third sliding block and the groove bottom wall surface of the third groove, which can greatly improve the synchronization performance of the rotating shaft mechanism, and can avoid the problem of increased gap between the sliding support and the second swing arm after long-term use of the rotating shaft mechanism, and can always ensure the synchronization performance of the rotating shaft mechanism.

[0063] In an embodiment, the base is provided with a second sliding hole, and the extension direction of the second sliding hole is parallel to the length direction of the base.

[0064] The synchronous sliding block is installed in the first sliding hole and can slide in the first sliding hole relative to the base along the length direction of the base, to realize the sliding connection between the synchronous sliding block and the base.

[0065] In an embodiment, the base is further provided with a third sliding hole, and the third sliding hole is spirally arranged around the rotation center of the second rotating part.

[0066] The second rotating part is provided with a second sliding column, which is arranged on the bottom surface of the second rotating part and is slidingly installed in the third sliding hole.

[0067] During the rotation of the second swing arm relative to the base, the second sliding column slides in the third sliding hole relative to the base, to drive the second swing arm to slide relative to the base along the length direction of the base, and further drive the second sliding part to slide relative to the second fixed frame along the length direction of the second fixed frame.

[0068] In an embodiment, the base is provided with a first limiting block, and the first swing arm further comprises a first connecting part connected between the first rotating part and the first sliding part, and the first connecting part is provided with a first limiting hole, and the opening of the first limiting hole is located on the bottom surface of the first connecting part.

[0069] When the rotating shaft mechanism is in the unfolded state, the first limiting block is arranged in the first limiting hole, and the base abuts against the bottom surface of the first connecting part, to limit the further rotation of the first swing arm relative to the base in the counterclockwise direction, so as to flatten the first swing arm relative to the base, and ensure that the rotating shaft mechanism remains in the unfolded state.

[0070] In an embodiment, the base is provided with a second limiting block, and the second swing arm further comprises a second connecting portion connected between the second rotating portion and the second sliding portion, and the second connecting portion is provided with a second limiting hole, and an opening of the second limiting hole is located on a bottom surface of the second connecting portion.

[0071] When the rotating shaft mechanism is in the unfolded state, the second limiting block is arranged in the second limiting hole, and the base abuts against the bottom surface of the second connecting portion to limit further rotation of the second swing arm relative to the base in the clockwise direction, so as to flatten the second swing arm relative to the base and ensure that the rotating shaft mechanism is kept in the unfolded state.

[0072] In a second aspect, the application provides a rotating shaft mechanism, comprising a base, a first swing arm, a second swing arm and a synchronous sliding block.

[0073] The first swing arm comprises a first rotating portion rotationally connected with the base, and the first rotating portion comprises a first side surface, and the first rotating portion is provided with a first groove, and an opening of the first groove is located on the first side surface, and the first groove is a spiral groove.

[0074] The second swing arm comprises a second rotating portion rotationally connected with the base, and the second rotating portion comprises a third side surface, and the second rotating portion is provided with a third groove, and an opening of the third groove is located on the third side surface, and the third groove is a spiral groove.

[0075] The synchronous sliding block is mounted on the base and is slidingly connected between the first rotating portion and the second rotating portion and is slidingly connected with the base.

[0076] The first sliding block is screw-fitted in the first groove, and the second sliding block is screw-fitted in the second groove.

[0077] During rotation of the first swing arm relative to the base, the first sliding block slides in the first groove relative to the first rotating portion, and the synchronous sliding block slides along the length direction of the base relative to the base.

[0078] During rotation of the second swing arm relative to the base, the second sliding block slides in the second groove relative to the second rotating portion, and the synchronous sliding block slides along the length direction of the base relative to the base.

[0079] During rotation of the first swing arm relative to the base, the first rotating portion rotates in the first mounting groove relative to the base, the first sliding block slides in the first groove relative to the first rotating portion, the first swing arm can slide along the length direction of the base relative to the base under the action of the first sliding block, and the synchronous sliding block is driven to slide along the length direction of the base relative to the base, the synchronous sliding block drives the second swing arm to slide along the length direction of the base relative to the base, and the second swing arm is driven to rotate relative to the base, so as to realize synchronous rotation of the first swing arm and the second swing arm relative to the base.

[0080] It can be understood that, in the process of rotating the second swing arm relative to the base, the second swing arm can also drive the synchronous slider to slide relative to the base along the length direction of the base. The synchronous slider can not only drive the first swing arm to slide relative to the base along the length direction of the base, but also drive the first swing arm to rotate relative to the base, so as to realize the synchronous rotation of the first swing arm and the second swing arm relative to the base.

[0081] In the rotating shaft mechanism, the synchronous slider is fixedly connected with the first swing arm and the second swing arm. The synchronous slider can not only synchronously transmit the rotation of the first swing arm relative to the base to the second swing arm, but also synchronously transmit the rotation of the second swing arm relative to the base to the first swing arm, so as to realize the precise synchronization of the rotating shaft mechanism.

[0082] Compared with the existing rotating shaft mechanism that adopts a synchronous gear to realize synchronous rotation, in the rotating shaft mechanism, the first swing arm and the second swing arm are both realized in the form of a spiral virtual shaft to realize the rotation cooperation with the base. The rotating shaft mechanism does not need to design a pin shaft and a synchronous gear, which not only helps to reduce the thickness of the rotating shaft mechanism, but also reserves more thickness space to accommodate the base, the first swing arm and the second swing arm and other structural members. The base, the first swing arm and the second swing arm and other structural members can be designed to have a larger thickness to improve the strength and rigidity of the rotating shaft mechanism.

[0083] In a third aspect, the application provides an electronic device, which comprises a first shell, a second shell and any of the rotating shaft mechanisms described above, and the rotating shaft mechanism is connected between the first shell and the second shell.

[0084] In the electronic device, in the process of rotating the first swing arm relative to the base, the first swing arm only slides relative to the first fixed frame along the length direction of the first fixed frame, and the first swing arm does not slide relative to the first fixed frame along the width direction of the first fixed frame. The overlap amount between the first swing arm and the first fixed frame is always kept unchanged, the problem of large virtual position of the first swing arm does not occur, the problem of the first swing arm falling off the first fixed frame can be effectively avoided, the assembly stability between the first swing arm and the first fixed frame is ensured, and the use reliability of the electronic device is further ensured.

[0085] In an implementation manner, the electronic device further comprises a display module, the display module comprises a first display part, a second display part and a foldable part, the first display part is mounted to the first shell, the second display part is mounted to the second shell, the foldable part is connected between the first display part and the second display part, and is arranged opposite to the rotating shaft mechanism.

[0086] In the electronic device, in the process that the first swing arm rotates relative to the base, the first swing arm only slides relative to the first fixed frame along the length direction of the first fixed frame, the first swing arm and the first fixed frame are always in close cooperation, and the first swing arm can always support the first fixed frame. When the electronic device falls, the first swing arm cannot slide relative to the first fixed frame along the width direction of the first fixed frame, the first fixed frame cannot drive the display module of the electronic device to move towards the base, and the display module cannot fail due to interference with the pivot mechanism, thereby improving the falling reliability of the electronic device and ensuring the use reliability of the electronic device. BRIEF DESCRIPTION OF DRAWINGS

[0087] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required to be used by the embodiments of the present application will be described below.

[0088] FIG. 1 is a structural schematic diagram of an electronic device in a folded state according to an embodiment of the present application;

[0089] FIG. 2 is a structural schematic diagram of the electronic device in an unfolded state according to the embodiment of the present application;

[0090] FIG. 3 is a partial structural schematic diagram of a pivot mechanism of an electronic device in a first embodiment according to the embodiment of the present application;

[0091] FIG. 4 is a partial structural schematic diagram of the pivot mechanism of the electronic device in the first embodiment according to the embodiment of the present application;

[0092] FIG. 5 is an exploded structural schematic diagram of the pivot mechanism according to the embodiment of the present application;

[0093] FIG. 6 is a partial structural schematic diagram of a base of the pivot mechanism according to the embodiment of the present application;

[0094] FIG. 7 is an exploded structural schematic diagram of the base according to the embodiment of the present application;

[0095] FIG. 8 is a structural schematic diagram of a connecting assembly of the pivot mechanism according to the embodiment of the present application;

[0096] FIG. 9 is a structural schematic diagram of the connecting assembly according to the embodiment of the present application from another angle;

[0097] FIG. 10 is a structural schematic diagram of the base, a first swing arm and a second swing arm of the pivot mechanism according to the embodiment of the present application;

[0098] FIG. 11 is a structural schematic diagram of the first swing arm and the second swing arm of the connecting assembly according to the embodiment of the present application;

[0099] FIG. 12 is a structural schematic diagram of the first swing arm and the second swing arm of the connecting assembly according to the embodiment of the present application;

[0100] FIG. 13 is a partial structural schematic diagram of the pivot mechanism according to the embodiment of the present application; and

[0101] Fig. 14 is a schematic view of a partial structure of the hinge mechanism shown in Fig. 4;

[0102] Fig. 15 is a schematic view of a partial structure of the hinge mechanism shown in Fig. 4 after being cut open;

[0103] Fig. 16 is a schematic view of a partial structure of the hinge mechanism shown in Fig. 4 in another state after being cut open;

[0104] Fig. 17 is a schematic view of an exploded structure of the first swing arm and the second swing arm shown in Fig. 11;

[0105] Fig. 18 is a schematic view of an exploded structure of the first swing arm and the second swing arm shown in Fig. 12;

[0106] Fig. 19 is a schematic view of a structure of a synchronization assembly in the hinge mechanism shown in Fig. 5;

[0107] Fig. 20 is a schematic view of a structure of the synchronization assembly shown in Fig. 19 at another angle;

[0108] Fig. 21 is a schematic view of a cross-sectional structure of the hinge mechanism shown in Fig. 3 after being cut open along I-I;

[0109] Fig. 22 is a schematic view of a cross-sectional structure of the hinge mechanism shown in Fig. 4 after being cut open along II-II;

[0110] Fig. 23 is a schematic view of a partial structure of a hinge mechanism of an electronic device in a second embodiment of the electronic device shown in Fig. 2;

[0111] Fig. 24 is a schematic view of an exploded structure of the hinge mechanism shown in Fig. 23;

[0112] Fig. 25 is a schematic view of a partial structure of a base of the hinge mechanism shown in Fig. 23;

[0113] Fig. 26 is a schematic view of an exploded structure of the base shown in Fig. 25;

[0114] Fig. 27 is a schematic view of a structure of the first swing arm and the second swing arm of a connecting assembly in the hinge mechanism shown in Fig. 17;

[0115] Fig. 28 is a schematic view of a structure of the first swing arm and the second swing arm shown in Fig. 27 at another angle;

[0116] Fig. 29 is a schematic view of a partial structure of the hinge mechanism shown in Fig. 23 after being cut open;

[0117] Fig. 30 is a schematic view of a partial structure of the hinge mechanism shown in Fig. 23 in another state after being cut open;

[0118] Fig. 31 is a schematic view of a structure of the hinge mechanism shown in Fig. 23 after being cut open along III-III. DETAILED DESCRIPTION

[0119] The technical solutions in the embodiments of the present application will be described clearly and completely in conjunction with the drawings in the embodiments of the present application.

[0120] Please refer to FIG. 1 and FIG. 2, FIG. 1 is a structural schematic diagram of an electronic device 1000 in a folded state according to an embodiment of the present application, and FIG. 2 is a structural schematic diagram of the electronic device 1000 in an unfolded state according to an embodiment of the present application.

[0121] The electronic device 1000 can be a foldable electronic product such as a mobile phone, a tablet computer, a personal computer, a multimedia player, an e-book reader, a notebook computer, a vehicle-mounted device, or a wearable device. In this embodiment, the electronic device 1000 is a foldable mobile phone. That is, the electronic device 1000 is a mobile phone that can be switched between a folded state and an unfolded state.

[0122] For ease of description, the width direction of the electronic device 1000 shown in FIG. 1 is defined as the X-axis direction, the length direction of the electronic device 1000 is defined as the Y-axis direction, and the thickness direction of the electronic device 1000 is defined as the Z-axis direction. The X-axis direction, the Y-axis direction, and the Z-axis direction are perpendicular to each other. For example, the extension direction of the rotation axis of the electronic device 1000 is parallel to the Y-axis direction. That is, the electronic device 1000 can be relatively unfolded or relatively folded around the Y-axis direction.

[0123] It should be noted that the parallel and perpendicular in the embodiments of the present application are relative position relations, and are not strictly defined in the mathematical sense. A small amount of deviation is allowed, and approximately parallel and approximately perpendicular are acceptable. For example, A is parallel to B, which means that A and B are parallel or approximately parallel, and the included angle between A and B is between 0 degrees and 10 degrees. For example, A is perpendicular to B, which means that A and B are perpendicular or approximately perpendicular, and the included angle between A and B is between 80 degrees and 100 degrees.

[0124] The electronic device 1000 shown in FIG. 1 is in a folded state. At this time, the size of the electronic device 1000 in the X-axis direction is small, and the electronic device 1000 is convenient to carry. The electronic device 1000 shown in FIG. 2 is in an unfolded state. For example, the unfolding angle α of the electronic device 1000 shown in FIG. 2 is 180 degrees. In other words, the electronic device 1000 shown in FIG. 1 is in a flat state. At this time, the size of the electronic device 1000 in the X-axis direction is large, and the electronic device 1000 has a large display area.

[0125] It should be noted that the angles illustrated in the embodiments of the present application are allowed to have a slight deviation. For example, the unfolding angle a of the electronic device 1000 shown in FIG. 2 is 180 degrees, which means that a can be 180 degrees, or approximately 180 degrees, such as 170 degrees, 175 degrees, 185 degrees, 190 degrees, etc. The angles illustrated in the following embodiments can be understood in the same way.

[0126] It should be understood that the electronic device 1000 illustrated in the embodiments of the present application is a terminal that can be folded once. In some other embodiments, the electronic device 1000 can also be a terminal that can be folded multiple times (more than twice). At this time, the electronic device 1000 can include multiple parts, and adjacent two parts can be relatively close to be folded to the electronic device 1000 in a folded state, and adjacent two parts can be relatively away from being unfolded to the electronic device 1000 in an unfolded state.

[0127] The electronic device 1000 includes an electronic device 100 and a display module 200, and the display module 200 is mounted on the electronic device 100. The display module 200 includes a display surface 201 facing away from the electronic device 100, and the display surface 201 is used to display information such as text, images, or videos. In the present embodiment, the display module 200 includes a first display part 210, a second display part 220, and a foldable part 230 connected between the first display part 210 and the second display part 220. The foldable part 230 can be bent around the Y-axis direction.

[0128] As shown in FIG. 1, when the electronic device 1000 is in a folded state, the electronic device 100 and the display module 200 are both in a folded state, the first display part 210 and the second display part 220 are arranged oppositely, and the foldable part 230 is bent. At this time, the display module 200 has a relatively small exposed area, which can greatly reduce the probability of damage to the display module 200, thereby achieving effective protection of the display module 200.

[0129] As shown in FIG. 2, when the electronic device 1000 is in an unfolded state, the electronic device 100 and the display module 200 are both in an unfolded state, the first display part 210 and the second display part 220 are unfolded oppositely, and the foldable part 230 is unfolded without bending. At this time, the angles between the first display part 210 and the second display part 220, the angles between the first display part 210 and the foldable part 230, and the angles between the second display part 220 and the foldable part 230 are all a, the display module 200 has a large display area, thereby achieving large-screen display of the electronic device 1000 and improving the user's experience.

[0130] It should be understood that the electronic device 1000 shown in the embodiments of the present application is folded inwards, and when the electronic device 1000 is in the folded state, the display module 200 is located on the inner side of the electronic device 100. In some other embodiments, the electronic device 1000 can also be folded outwards, and when the electronic device 1000 is in the folded state, the display module 200 is located on the outer side of the electronic device 100.

[0131] The electronic device 100 includes a first housing 110, a second housing 120, and a hinge mechanism 130 connected between the first housing 110 and the second housing 120 to achieve a rotational connection between the first housing 110 and the second housing 120. Specifically, the first housing 110 carries a first display portion 210, and the second housing 120 carries a second display portion 220. In other words, the first display portion 210 is mounted to the first housing 110, and the second display portion 220 is mounted to the second housing 120. The hinge mechanism 130 is disposed opposite the foldable portion 230.

[0132] The first housing 110 and the second housing 120 can be relatively rotated by the hinge mechanism 130, so that the electronic device 100 is switched between the folded state and the unfolded state. Specifically, the first housing 110 and the second housing 120 can be relatively rotated to be opposite to each other, so that the electronic device 100 is in the folded state, as shown in FIG. 1. At this time, the hinge mechanism 130 is in the folded state. The first housing 110 and the second housing 120 can also be relatively rotated to be relatively flat, so that the electronic device 1000 is in the flat state, as shown in FIG. 2. At this time, the included angle between the first housing 110 and the second housing 120 is α, and the hinge mechanism 130 is in the flat state.

[0133] At present, electronic devices often use a hinge mechanism to achieve folding and unfolding, and use the sliding connection between the swing arm and the fixed frame to meet the folding or synchronization function requirements of the hinge mechanism. However, because the swing arm and the fixed frame are often connected by a sliding groove, when the electronic device falls, the fixed frame is easy to move relative to the swing arm. The fixed frame not only drives the display module to move towards the base, the hinge mechanism will interfere with the display module and cause the display module to fail, affecting the use reliability of the electronic device, and the fixed frame will also move relative to the swing arm away from the base, the swing arm is easy to fall off from the fixed frame along the sliding groove, reducing the assembly stability of the hinge mechanism, and also affecting the use reliability of the electronic device.

[0134] Next, the structure of the hinge mechanism 130 of the electronic device 100 in the electronic device 1000 shown in the embodiments of the present application will be described.

[0135] Please refer to FIG. 3 to FIG. 5, FIG. 3 is a partial structure schematic diagram of the hinge mechanism 130 of the electronic device 100 in the electronic equipment 1000 shown in FIG. 1 in the first embodiment, FIG. 4 is a partial structure schematic diagram of the hinge mechanism 130 of the electronic device 100 in the electronic equipment 1000 shown in FIG. 2 in the first embodiment, and FIG. 5 is an exploded structure schematic diagram of the hinge mechanism 130 shown in FIG. 4. In the drawings, the hinge mechanism 130 shown in FIG. 3 is in a folded state, and the hinge mechanism 130 shown in FIG. 4 is in an unfolded state.

[0136] The hinge mechanism 130 comprises a base 10, a connecting assembly 20 and a synchronization assembly 30, and the connecting assembly 20 and the synchronization assembly 30 are both mounted on the base 10. The connecting assembly 20 is rotationally connected to the base 10 and can be folded or unfolded relative to the base 10. The synchronization assembly 30 is connected to the connecting assembly 20 and abuts against the connecting assembly 20.

[0137] It should be noted that FIG. 3 to FIG. 5 only show the partial structure of the hinge mechanism 130, and the hinge mechanism 130 can further comprise a damping assembly, a pressing plate assembly, a support plate and the like, which can be referred to the related description of the existing hinge mechanism and will not be described here.

[0138] When the hinge mechanism 130 is in the folded state, the connecting assembly 20 is in the folded state. When the hinge mechanism 130 is in the unfolded state, the connecting assembly 20 is in the unfolded state. In the process of switching the hinge mechanism 130 from the folded state to the unfolded state, the connecting assembly 20 is switched from the folded state to the unfolded state. In the process of switching the hinge mechanism 130 from the unfolded state to the folded state, the connecting assembly 20 is switched from the unfolded state to the folded state.

[0139] In the embodiment, the length direction of the base 10 is parallel to the Y-axis direction. The connecting assembly 20 comprises a first fixed frame 21, a second fixed frame 22, a first swing arm 23, a second swing arm 24, a third swing arm 25 and a fourth swing arm 26. The first fixed frame 21 is located on one side of the base 10 and is fixedly connected to the first housing 110. The second fixed frame 22 is located on one side of the base 10 and is fixedly connected to the second housing 120. When the hinge mechanism 130 is in the unfolded state, the first fixed frame 21 is located on one side of the base 10 and is spaced apart from the base 10, and the second fixed frame 22 is located on the other side of the base 10 and is spaced apart from the base 10. For example, the first fixed frame 21 is located on the left side of the base 10, and the second fixed frame 22 is located on the right side of the base 10. The first swing arm 23 is rotationally connected to the base 10 and is slidingly connected to the first fixed frame 21. The second swing arm 24 is rotationally connected to the base 10 and is slidingly connected to the second fixed frame 22. The third swing arm 25 is rotationally connected to the base 10 and is fixedly connected to the first fixed frame 21. The fourth swing arm 26 is rotationally connected to the base 10 and is fixedly connected to the second fixed frame 22.

[0140] When the connecting assembly 20 switches between the folded state and the unfolded state, the first fixed frame 21, the first swing arm 23 and the third swing arm 25 rotate relative to the base 10 in a first direction, and the second fixed frame 22, the second swing arm 24 and the fourth swing arm 26 rotate relative to the base 10 in a second direction opposite to the first direction.

[0141] For example, when the connecting assembly 20 switches from the folded state to the unfolded state, the first fixed frame 21, the first swing arm 23 and the third swing arm 25 rotate relative to the base 10 in a counterclockwise direction, and the second fixed frame 22, the second swing arm 24 and the fourth swing arm 26 rotate relative to the base 10 in a clockwise direction. When the connecting assembly 20 switches from the unfolded state to the folded state, the first fixed frame 21, the first swing arm 23 and the third swing arm 25 rotate relative to the base 10 in a clockwise direction, and the second fixed frame 22, the second swing arm 24 and the fourth swing arm 26 rotate relative to the base 10 in a counterclockwise direction.

[0142] It should be noted that the rotating shaft mechanism 130 shown in FIGS. 3-5 only shows one connecting assembly 20. In fact, the rotating shaft mechanism 130 can include multiple (two or more) connecting assemblies 20, and the multiple connecting assemblies 20 can be arranged apart from each other along the Y-axis direction. The multiple connecting assemblies 20 can be identical or similar assemblies, symmetric or partially symmetric structures, or different structures. For example, the basic structure of each component in the multiple connecting assemblies 20, the connection relationship between the components, and the connection relationship between the components and components outside the assembly can all refer to the related designs of the connecting assembly 20 below, and the detailed structure or position arrangement of the components can be different. It should be noted that the first fixed frames 21 of the multiple connecting assemblies 20 can be independent structural members or multiple parts of an integral structural member. And / or, the second fixed frames 22 of the multiple connecting assemblies 20 can be independent structural members or multiple parts of an integral structural member.

[0143] The synchronization assembly 30 includes a synchronization slider 31 installed on one side of the base 10 facing the first swing arm 23 and the second swing arm 24, and slidingly connected between the first swing arm 23 and the second swing arm 24, and slidingly connected with the base 10. The synchronization slider 31 can slide relative to the base 10 along the length direction of the base 10. The synchronization slider 31 can be used to realize the synchronous rotation of the first swing arm 23 and the second swing arm 24 relative to the base 10, to drive the first fixed frame 21 and the second fixed frame 22 to rotate synchronously relative to the base 10, and the third swing arm 25 and the fourth swing arm 26 to rotate synchronously relative to the base 10, thereby ensuring the synchronous rotation of the first housing 110 and the second housing 120, and improving the user experience.

[0144] It should be noted that the rotating shaft mechanism 130 shown in FIGS. 3-5 only shows one connecting assembly 20. In practice, the rotating shaft mechanism 130 can include multiple synchronous assemblies 30, which can be arranged in the Y-axis direction and spaced apart from each other. The multiple synchronous assemblies 30 can be the same or similar assemblies, symmetric or partially symmetric structures, or different structures. For example, the basic structure of each component in the multiple synchronous assemblies 30, the connection relationship between the components, and the connection relationship between the components and the components outside the assembly can be referred to the related designs of the synchronous assembly 30 below, and the detailed structure or position arrangement of the components can be different.

[0145] Referring to FIG. 6, FIG. 6 is a schematic diagram of a partial structure of the base 10 in the rotating shaft mechanism 130 shown in FIG. 5.

[0146] The base 10 is provided with a first mounting groove 122, a second mounting groove 123, and a second sliding hole 128. The opening of the first mounting groove 122 and the opening of the second mounting groove 123 are both located on the top surface (not labeled in the figure) of the base 10. The first mounting groove 122 and the second mounting groove 123 are both recessed from the top surface to the bottom surface (not labeled in the figure) of the base 10 in the direction of the negative direction of the Z-axis (shown in the figure).

[0147] It should be noted that the terms such as "top", "bottom", "left", "right", "front", and "back" used in the description of the electronic device 1000 in the embodiments of the present application are mainly described based on the display position of the electronic device 1000 in the drawings, and the direction of the Z-axis positive direction is "top", the direction of the Z-axis negative direction is "bottom", the direction of the X-axis positive direction is "right", the direction of the X-axis negative direction is "left", the direction of the Y-axis positive direction is "back", and the direction of the Y-axis negative direction is "front", which does not limit the position of the electronic device 1000 in the actual application scenario.

[0148] The first mounting groove 122 is located on the left side of the base 10 and penetrates the left side surface (not labeled in the figure) of the base 10. The groove wall surface of the first mounting groove 122 includes a first groove bottom wall surface 122a, a first groove side wall surface (not labeled in the figure), and a second groove side wall surface (not labeled in the figure). The first groove bottom wall surface 122a is arranged opposite to the opening of the first mounting groove 122. In the length direction (Y-axis direction shown in the figure) of the first mounting groove 122, the first groove side wall surface and the second groove side wall surface are respectively connected to the opposite sides of the first groove bottom wall surface 122a and are spaced apart and arranged opposite to each other. For example, the first mounting groove 122 can be an arc-shaped groove, and the center axis of the first mounting groove 122 is parallel to the Y-axis direction. In some other embodiments, the first mounting groove 122 can also not penetrate the left side surface of the base 10.

[0149] The second mounting groove 123 is located on the right side of the base 10 and penetrates the right side surface of the base 10. In the width direction (the X-axis direction in the figure) of the base 10, the second mounting groove 123 is located on one side of the first mounting groove 122 and is spaced apart from and opposite to the first mounting groove 122. The groove wall surface of the second mounting groove 123 includes a second groove bottom wall surface 123a, a third groove side wall surface (not labeled in the figure), and a fourth groove side wall surface (not labeled in the figure). The second groove bottom wall surface 123a is located opposite to the opening of the second mounting groove 123. In the length direction (the Y-axis direction in the figure) of the second mounting groove 123, the third groove side wall surface and the fourth groove side wall surface are respectively connected to opposite sides of the second groove bottom wall surface 123a and are spaced apart and opposite to each other. For example, the second mounting groove 123 can be an arc-shaped groove, and the central axis of the second mounting groove 123 is parallel to the Y-axis direction. In other embodiments, the second mounting groove 123 can also not penetrate the right side surface of the base 10.

[0150] The opening of the second sliding hole 128 is located on the first groove bottom wall surface 122a and the second groove bottom wall surface 123a. The second sliding hole 128 is recessed from the first groove bottom wall surface 122a and the second groove bottom wall surface 123a towards the bottom surface of the base 10 and penetrates the bottom surface of the base 10. The extension direction of the second sliding hole 128 is parallel to the Y-axis direction. The second sliding hole 128 includes two sub-sliding holes 1281, which are spaced apart and opposite to each other in the width direction of the base 10. The extension directions of the two sub-sliding holes 1281 are both parallel to the Y-axis direction. The opening of one sub-sliding hole 1281 is located on the first groove bottom wall surface 122a, and the opening of the other sub-sliding hole 1281 is located on the second groove bottom wall surface 123a. In other embodiments, the second sliding hole 128 can also not penetrate the bottom surface of the base 10.

[0151] The base 10 further comprises a first sliding block 12a, a second sliding block 12b, a third sliding block 12c, a fourth sliding block 12d, a first limiting block 12e, and a second limiting block 12f. The first sliding block 12a, the second sliding block 12b, and the first limiting block 12e are all arranged on the groove wall surface of the first mounting groove 122. Specifically, the first sliding block 12a is arranged on the first groove side wall surface and protrudes from the first groove side wall surface towards the second groove side wall surface and is spaced apart from the second groove side wall surface. The first sliding block 12a includes a first abutting surface (not labeled in the figure) facing away from the first groove side wall surface, the first abutting surface is a spiral surface, and the first abutting surface is spirally arranged around the central axis of the first mounting groove 122.

[0152] The second sliding block 12b is arranged on the second groove side wall surface and protrudes from the second groove side wall surface towards the first groove side wall surface and is spaced apart from the first groove side wall surface. The second sliding block 12b includes a second abutting surface (not labeled in the figure) facing away from the second groove side wall surface, the second abutting surface is a spiral surface, and the second abutting surface is spirally arranged around the central axis of the first mounting groove 122 and is parallel to the first abutting surface.

[0153] The first limiting block 12e is arranged on the first groove bottom wall surface 122a and protrudes from the first groove bottom wall surface 122a to the top surface of the base 10. Specifically, the first limiting block 12e is located between the first sliding block 12a and the second sliding block 12b and is arranged in a spaced manner with respect to the first sliding block 12a and the second sliding block 12b. The first limiting block 12e includes two first sub-limiting blocks 12e1, which are arranged in a spaced manner along the length direction of the base 10.

[0154] The third sliding block 12c, the fourth sliding block 12d and the second limiting block 12f are arranged on the groove wall surface of the second mounting groove 123. Specifically, the third sliding block 12c is arranged on the third groove side wall surface, the fourth sliding block 12d is arranged on the fourth groove side wall surface, and the second limiting block 12f is arranged on the second groove bottom wall surface 123a. The second limiting block 12f includes two fourth sub-limiting blocks 12f1, which are arranged in a spaced manner along the length direction of the base 10.

[0155] It should be noted that the structures of the third sliding block 12c, the fourth sliding block 12d and the second limiting block 12f and their positional relationship in the second mounting groove 123 can be respectively referred to the structures of the first sliding block 12a, the second sliding block 12b and the first limiting block 12e and their positional relationship in the first mounting groove 122, which will not be described herein again.

[0156] Please refer to FIG. 7, which is an exploded structural schematic view of the base 10 shown in FIG. 6.

[0157] The base 10 includes a shaft cover 13, a sliding bracket 14, a first elastic member 15 and a second elastic member 16. The length direction of the shaft cover 13 is parallel to the Y-axis direction. The sliding bracket 14 is mounted on the shaft cover 13 and can slide along the length direction (Y-axis direction) of the shaft cover 13 relative to the shaft cover 13. The first elastic member 15 and the second elastic member 16 are both mounted on the shaft cover 13 and abut against the sliding bracket 14 and are arranged in a spaced manner with respect to each other. For example, the first elastic member 15 and the second elastic member 16 also abut against the shaft cover 13. The elastic deformation directions of the first elastic member 15 and the second elastic member 16 are both parallel to the Y-axis direction. For example, the first elastic member 15 and the second elastic member 16 can be springs or elastic foam structures having elasticity.

[0158] In other embodiments, the first elastic member 15 and the second elastic member 16 can be fixedly connected to the shaft cover 13, or the first elastic member 15 and the second elastic member 16 can be fixedly connected to other components of the base 10, or the first elastic member 15 can abut against the third swing arm 25 of the connecting assembly 20 and the second elastic member 16 can abut against the fourth swing arm 26 of the connecting assembly 20. The installation of the first elastic member 15 and the second elastic member 16 is not limited in the present application.

[0159] The shaft cover 13 is provided with a second sliding hole 128, a third mounting slot 131 and a fourth mounting slot 132. The opening of the third mounting slot 131 and the opening of the fourth mounting slot 132 are both located on the top surface (not labeled in the figure) of the shaft cover 13. The third mounting slot 131 and the fourth mounting slot 132 are both recessed from the top surface of the shaft cover 13 to the bottom surface (i.e. the bottom surface of the base 10) (negative direction of the Z-axis shown in the figure). Specifically, the third mounting slot 131 is located on the left side of the shaft cover 13 and penetrates the left side surface of the shaft cover 13. The slot wall surface of the third mounting slot 131 includes a first slot bottom wall surface 122a, a second slot side wall surface and a fifth slot side wall surface (not labeled in the figure). The first slot bottom wall surface 122a is oppositely arranged with the opening of the third mounting slot 131. Along the length direction (Y-axis direction shown in the figure) of the third mounting slot 131, the second slot side wall surface and the fifth slot side wall surface are respectively located on the opposite sides of the first slot bottom wall surface 122a and are spaced and oppositely arranged. Among them, the fifth slot side wall surface is spaced and oppositely arranged with the first slot bottom wall surface 122a.

[0160] The fourth mounting slot 132 is located on the right side of the shaft cover 13 and penetrates the right side surface of the shaft cover 13. Along the width direction (X-axis direction shown in the figure) of the shaft cover 13, the fourth mounting slot 132 is located on one side of the third mounting slot 131 and is spaced and oppositely arranged with the third mounting slot 131. The slot wall surface of the fourth mounting slot 132 includes a second slot bottom wall surface 123a, a fourth slot side wall surface and a sixth slot side wall surface (not labeled in the figure). The second slot bottom wall surface 123a is oppositely arranged with the opening of the fourth mounting slot 132. Along the extension direction (Y-axis direction shown in the figure) of the fourth mounting slot 132, the fourth slot side wall surface and the sixth slot side wall surface are respectively located on the opposite sides of the second slot bottom wall surface 123a and are spaced and oppositely arranged. Among them, the sixth slot side wall surface is spaced and oppositely arranged with the second slot bottom wall surface 123a.

[0161] In addition, the shaft cover 13 is also provided with a second sliding block 12b, a fourth sliding block 12d, a first limiting block 12e, a second limiting block 12f, a first mounting column 133 and a second mounting column 134. The first mounting column 133 is arranged on the fifth slot side wall surface and protrudes from the fifth slot side wall surface to the direction of the second slot side wall surface and is spaced and arranged with the second slot side wall surface. The second mounting column 134 is arranged on the sixth slot side wall surface and protrudes from the sixth slot side wall surface to the direction of the fourth slot side wall surface and is spaced and arranged with the fourth slot side wall surface. Exemplarily, the first mounting column 133 and the second mounting column 134 are both cylindrical.

[0162] In this embodiment, the shaft cover member 13 comprises the shaft cover 11 and a fixing bracket 12 mounted on the shaft cover 11. Specifically, the fixing bracket 12 is provided with a second sliding hole 128, a third mounting groove 131, a fourth mounting groove 132, a second sliding block 12b, a fourth sliding block 12d, a first limiting block 12e, a second limiting block 12f, a first mounting column 133 and a second mounting column 134. The second sliding hole 128 can penetrate the fixing bracket 12 along the thickness direction (the Z-axis direction shown in the figure) of the fixing bracket 12. In other embodiments, the shaft cover 11 and the fixing bracket 12 can be integrally formed, i.e., the shaft cover member 13 can be an integrally formed structural member, which is not specifically limited in the present application.

[0163] The sliding bracket 14 is mounted in the third mounting groove 131 and the fourth mounting groove 132 and can slide along the length direction of the shaft cover member 13 relative to the shaft cover member 13 in the third mounting groove 131 and the fourth mounting groove 132. Specifically, the sliding bracket 14 and the shaft cover member 13 enclose the first mounting groove 122 and the second mounting groove 123. The sliding bracket 14 comprises a first groove side wall surface and a third groove side wall surface. The first groove side wall surface and the third groove side wall surface are arranged in a spaced manner along the width direction (the X-axis direction shown in the figure) of the sliding bracket 14.

[0164] In addition, the sliding bracket 14 is further provided with a first sliding block 12a, a third sliding block 12c, a third mounting column 141 and a fourth mounting column 142. The third mounting column 141 is arranged on the surface of the sliding bracket 14 away from the first sliding block 12a and protrudes from the surface of the sliding bracket 14 away from the first sliding block 12a in a direction away from the first sliding block 12a, and is arranged in a spaced and opposite manner with the first mounting column 133. The fourth mounting column 142 is arranged on the surface of the sliding bracket 14 away from the third sliding block 12c and protrudes from the surface of the sliding bracket 14 away from the third sliding block 12c in a direction away from the third sliding block 12c, and is arranged in a spaced and opposite manner with the second mounting column 134. The third mounting column 141 and the fourth mounting column 142 are arranged in a spaced manner along the width direction of the sliding bracket 14. For example, the third mounting column 141 and the fourth mounting column 142 are both cylindrical.

[0165] The first elastic member 15 is mounted in the third mounting groove 131 and abuts between the fifth groove side wall surface and the surface of the sliding bracket 14 away from the first sliding block 12a. One end of the first elastic member 15 is sleeved on the first mounting column 133 and the other end is sleeved on the third mounting column 141. The second elastic member 16 is mounted in the fourth mounting groove 132 and abuts between the sixth groove side wall surface and the surface of the sliding bracket 14 away from the third sliding block 12c. One end of the second elastic member 16 is sleeved on the second mounting column 134 and the other end is sleeved on the fourth mounting column 142.

[0166] Please refer to Figs. 8 and 9 as well, Fig. 8 is a structural schematic diagram of the connecting assembly 20 in the rotating shaft mechanism 130 shown in Fig. 5, and Fig. 9 is a structural schematic diagram of the connecting assembly 20 shown in Fig. 8 from another angle.

[0167] In the embodiment, the length direction of the first fixed frame 21 and the length direction of the second fixed frame 22 are parallel to the Y-axis direction. The first fixed frame 21 is provided with a first sliding groove 211. The opening of the first sliding groove 211 is located on the surface of the first fixed frame 21 facing the base 10 (i.e. the right side surface of the first fixed frame 21). The first sliding groove 211 is recessed from the right side surface to the left side surface (not marked in the figure) of the first fixed frame 21 (the direction opposite to the X-axis shown in the figure). The first sliding groove 211 is rectangular, and the extension direction of the first sliding groove 211 is parallel to the length direction of the first fixed frame 21 (the Y-axis direction shown in the figure). In other embodiments, the opening of the first sliding groove 211 can also be located on the top surface of the first fixed frame 21 or other surfaces of the first fixed frame 21, which is not specifically limited in the application.

[0168] The second fixed frame 22 is provided with a second sliding groove 221. The opening of the second sliding groove 221 is located on the surface of the second fixed frame 22 facing the base 10 (i.e. the left side surface of the second fixed frame 22). The second sliding groove 221 is recessed from the left side surface to the right side surface (not marked in the figure) of the second fixed frame 22 (the direction of the X-axis shown in the figure). The second sliding groove 221 is rectangular, and the extension direction of the second sliding groove 221 is parallel to the length direction of the second fixed frame 22 (the Y-axis direction shown in the figure). In other embodiments, the opening of the second sliding groove 221 can also be located on the top surface of the second fixed frame 22 or other surfaces of the second fixed frame 22, which is not specifically limited in the application.

[0169] The first swing arm 23 includes a first rotating part 231, a first sliding part 232 and a first connecting part 233. The first rotating part 231 is rotationally connected with the base 10. The first rotating part 231 is mounted on the base 10 and can rotate relative to the base 10. The first sliding part 232 is fixedly connected with the first rotating part 231 and slidably connected with the first fixed frame 21. The first sliding part 232 is mounted on the first fixed frame 21 and can slide along the length direction of the first fixed frame 21 relative to the first fixed frame 21. The first connecting part 233 is connected between the first rotating part 231 and the first sliding part 232 to realize the fixed connection between the first sliding part 232 and the first rotating part 231.

[0170] Please refer to Figs. 10 to 12, Fig. 10 is a structural schematic diagram of the base 10, the first swing arm 23 and the second swing arm 24 in the rotating shaft mechanism 130 shown in Fig. 5, Fig. 11 is a structural schematic diagram of the first swing arm 23 and the second swing arm 24 in the connecting assembly 20 shown in Fig. 9, and Fig. 12 is a structural schematic diagram of the first swing arm 23 and the second swing arm 24 in the connecting assembly 20 shown in Fig. 10.

[0171] The first rotating part 231 is configured to be fitted in the first mounting slot 122 and rotatable relative to the base 10. The center of rotation of the first rotating part 231 relative to the base 10 coincides with the central axis of the first mounting slot 122. The first rotating part 231 comprises a first side surface 2311 and a second side surface 2312. The first side surface 2311 and the second side surface 2312 are arranged opposite to each other along the length direction of the first rotating part 231 (Y-axis direction in the drawings). The first side surface 2311 is a surface of the first rotating part 231 facing the first slot side wall, and the second side surface 2312 is a surface of the first rotating part 231 facing the second slot side wall.

[0172] The first rotating part 231 is provided with a first groove 2313, a second groove 2314 and a third sliding groove 2315. The first groove 2313 is open at the first side surface 2311. The first groove 2313 is recessed from the first side surface 2311 to the second side surface 2312 (negative direction of Y-axis in the drawings). In the embodiment, the first groove 2313 is a helical groove, and the first groove 2313 is helically arranged around the center of rotation of the first rotating part 231 relative to the base 10. The bottom wall surface of the first groove 2313 is a helical surface.

[0173] Please refer to FIG. 13 and FIG. 14 together. FIG. 13 is a schematic diagram of the partial structure of the rotating shaft mechanism 130 shown in FIG. 3, and FIG. 14 is a schematic diagram of the partial structure of the rotating shaft mechanism 130 shown in FIG. 4. In FIG. 13, the rotating shaft mechanism 130 is in a folded state, and in FIG. 14, the rotating shaft mechanism 140 is in an unfolded state.

[0174] The first groove 2313 is configured to be fitted in the first sliding block 12a. The first sliding block 12a is helically fitted in the first groove 2313. The first sliding block 12a is mounted in the first groove 2313 and is slidable relative to the first rotating part 231 in the first groove 2313. Specifically, the first abutting surface of the first sliding block 12a faces the first groove 2313 and is helically fitted in the first groove 2313. The first abutting surface of the first sliding block 12a is arranged opposite to the bottom wall surface of the first groove 2313 and can abut against the bottom wall surface of the first groove 2313. At this time, the first elastic member 15 provides a pre-tightening force for the helical fitting between the first sliding block 12a and the first groove 2313, so that the first abutting surface of the first sliding block 12a always abuts against the bottom wall surface of the first groove 2313, and the first sliding block 12a is always helically fitted in the first groove 2313.

[0175] The opening of the second groove 2314 is located at the second side surface 2312. The second groove 2314 is recessed from the second side surface 2312 towards the first side surface 2311 (the positive direction of the Y-axis shown in the figure). In the embodiment, the second groove 2314 is a spiral groove, which is arranged spirally around the first rotating part 231 relative to the rotation center of the base 10, and is arranged in parallel with the first groove 2313. The bottom wall surface of the second groove 2314 is a spiral surface, which is parallel to the bottom wall surface of the first groove 2313.

[0176] The structure of the second groove 2314 is matched with the structure of the second slider 12b. The second slider 12b is spirally matched with the second groove 2314. The second slider 12b is installed in the second groove 2314 and can slide relative to the first rotating part 231 in the second groove 2314. Specifically, the second abutting surface of the second slider 12b faces the second groove 2314 and is spirally matched with the second groove 2314. The second abutting surface of the second slider 12b is arranged opposite to the bottom wall surface of the second groove 2314 and can abut against the bottom wall surface of the second groove 2314.

[0177] As shown in FIG. 9 and FIG. 12, the third sliding groove 2315 is located at one end of the first rotating part 231 away from the first connecting part 233, and is located between the first groove 2313 and the second groove 2314 and is spaced apart from the first groove 2313 and the second groove 2314. The opening of the third sliding groove 2315 is located at the bottom surface (not labeled in the figure) of the first rotating part 231. The third sliding groove 2315 is recessed from the bottom surface of the first rotating part 231 towards the top surface (not labeled in the figure) (the positive direction of the Z-axis shown in the figure), and penetrates the top surface of the first rotating part 231. In some other embodiments, the third sliding groove 2315 can also not penetrate the top surface of the first rotating part 231.

[0178] Please refer to FIG. 15 and FIG. 16 together, FIG. 15 is a structure schematic diagram of the hinge mechanism 130 shown in FIG. 4 after being partially cut open, and FIG. 16 is a structure schematic diagram of the hinge mechanism 130 shown in FIG. 4 in another state after being partially cut open. In FIG. 15, the hinge mechanism 130 is in the unfolded state, and in FIG. 16, the first fixed frame 21 and the first swing arm 23 are folded relative to the base 10, and the second fixed frame 22 and the second swing arm 24 are unfolded relative to the base 10.

[0179] The structure of the first sliding part 232 is matched with the structure of the first sliding groove 211. The first sliding part 232 is installed on the first sliding groove 211 and can slide in the first sliding groove 211 relative to the first fixed frame 21 along the length direction of the first fixed frame 21. The end surface 2321 of the first sliding part 232 away from the first rotating part 231 is arranged opposite to the groove bottom wall surface 2111 of the first sliding groove 211, and the groove bottom wall surface 2111 of the first sliding groove 211 limits the sliding of the first sliding part 232 in the first sliding groove 211 along the width direction (the X-axis direction in the figure) of the first fixed frame 21. For example, the end surface 2321 of the first sliding part 232 away from the first rotating part 231 abuts against the groove bottom wall surface 2111 of the first sliding groove 211.

[0180] In some other embodiments, the end surface of the first sliding part 232 away from the first rotating part 231 and the groove bottom wall surface of the first sliding groove 211 can be arranged with a gap, for example, the gap between the end surface of the first sliding part 232 away from the first rotating part 231 and the groove bottom wall surface of the first sliding groove 211 can be relatively small, at this time, the groove bottom wall surface of the first sliding groove 211 can limit the movement distance of the first sliding part 232 relative to the first fixed frame 21 along the width direction of the first fixed frame 21.

[0181] Please refer to FIG. 10 and FIG. 14, the first connecting part 233 is provided with a first limiting hole 2331, and the opening of the first limiting hole 2331 is located on the bottom surface (not marked in the figure) of the first connecting part 233. The first limiting hole 2331 is recessed from the bottom surface to the top surface (not marked in the figure) of the first connecting part 233 in the direction of the positive direction of the Z-axis (as shown in the figure), and penetrates through the top surface of the first connecting part 233. The first limiting hole 2331 includes two first sub-limiting holes 2332 arranged with a gap along the length direction (the Y-axis direction in the figure) of the first connecting part 233.

[0182] The structure of the first limiting hole 2331 is matched with the structure of the first limiting block 12e. When the rotating shaft mechanism 130 is in the unfolded state, the first limiting block 12e is arranged in the first limiting hole 2331, and the bottom surface of the first connecting part 233 abuts against the base 10, so as to limit the further rotation of the first swing arm 23 relative to the base 10 in the counterclockwise direction, so as to make the first swing arm 23 flatten relative to the base 10, and ensure that the rotating shaft mechanism 130 remains in the unfolded state. The structure of the first sub-limiting hole 2332 is matched with the structure of the first sub-limiting block 12e1. When the rotating shaft mechanism 130 is in the unfolded state, each first sub-limiting block 12e1 is arranged in one first sub-limiting hole 2332.

[0183] Please refer to FIG. 17 and FIG. 18, FIG. 17 is an exploded structural schematic view of the first swing arm 23 and the second swing arm 24 shown in FIG. 11, and FIG. 18 is an exploded structural schematic view of the first swing arm 23 and the second swing arm 24 shown in FIG. 12.

[0184] In this embodiment, the first swing arm 23 comprises a first sub-swing arm 234 and a second sub-swing arm 235, which are fixedly connected. The first sub-swing arm 234 comprises a first sub-rotation part 2341, a first sub-sliding part 2342, and a first sub-connection part 2343. The first sub-rotation part 2341 comprises the first side surface 2311. The first sub-rotation part 2341 is provided with a first recess 2313 and a first sub-sliding groove 2344. The first sub-sliding groove 2344 is located on a side of the first sub-rotation part 2341 facing the second sub-swing arm 235, and is arranged in a spaced manner with the first recess 2313. The opening of the first sub-sliding groove 2344 is located on the bottom surface (not marked in the figure) of the first sub-rotation part 2341. The first sub-sliding groove 2344 is recessed from the bottom surface of the first sub-rotation part 2341 to the top surface (not marked in the figure) in the direction of the positive direction of the Z-axis (as shown in the figure), and penetrates the top surface of the first sub-rotation part 2341 and the surface of the first sub-rotation part 2341 facing the second sub-swing arm 235.

[0185] The first sub-sliding part 2342 is provided with a second positioning hole 2345 and a first clamping groove 2346. The second positioning hole 2345 is located on a side of the first sub-sliding part 2342 close to the first sub-connection part 2343. The opening of the second positioning hole 2345 is located on the surface of the first sub-sliding part 2342 facing the second sub-swing arm 235. The second positioning hole 2345 is recessed from the surface of the first sub-sliding part 2342 facing the second sub-swing arm 235 to the direction away from the second sub-swing arm 235.

[0186] The first clamping groove 2346 is located on a side of the first sub-sliding part 2342 away from the first sub-connection part 2343, and is arranged in a spaced manner with the second positioning hole 2345. The opening of the first clamping groove 2346 is located on the bottom surface (not marked in the figure) of the first sub-sliding part 2342. The first clamping groove 2346 is recessed from the bottom surface of the first sub-sliding part 2342 to the top surface (not marked in the figure) in the direction of the positive direction of the Z-axis (as shown in the figure), and penetrates the surface of the first sub-sliding part 2342 away from the first sub-connection part 2343 and the surface of the first sub-sliding part 2342 facing the second sub-swing arm 235. In some other embodiments, the first clamping groove 2346 can also not penetrate the surface of the first sub-sliding part 2342 away from the first sub-connection part 2343.

[0187] In addition, the first sub-sliding part 2342 is also provided with a first clamping part 2347, which is located at one end of the first sub-sliding part 2342 facing the second sub-swing arm 235. The first clamping part 2347 is a clamping protrusion. The first clamping part 2347 is located on the groove bottom wall surface (not marked in the figure) of the first clamping groove 2346, and protrudes from the groove bottom wall surface of the first clamping groove 2346 to the direction of the opening of the first clamping groove 2346 (the negative direction of the Z-axis as shown in the figure).

[0188] The first sub connecting part 2343 is connected between the first sub rotating part 2341 and the first sub sliding part 2342. The first sub connecting part 2343 is provided with a first sub limiting hole 2332 penetrating the first sub connecting part 2343 along the thickness direction (the Z-axis direction shown in the figure) of the first sub connecting part 2343. The first sub rotating part 2341, the first sub sliding part 2342 and the first sub connecting part 2343 can be integrally formed.

[0189] The second sub swing arm 235 comprises a second sub rotating part 2351, a second sub sliding part 2352 and a second sub connecting part 2353. The second sub rotating part 2351 is in contact with the first sub rotating part 2341 and forms the first rotating part 231 with the first sub rotating part 2341. The second sub rotating part 2351 comprises a second side surface 2312. The second sub rotating part 2351 is provided with a second groove 2314 and a second sub sliding groove 2354. The second sub sliding groove 2354 is located on the side of the second sub rotating part 2351 facing the first sub rotating part 2341 and is arranged in a spaced manner with the second groove 2314. The opening of the second sub sliding groove 2354 is located on the bottom surface (not marked in the figure) of the second sub rotating part 2351. The second sub sliding groove 2354 is recessed from the bottom surface to the top surface (not marked in the figure) of the second sub rotating part 2351 in the direction of the Z-axis positive direction shown in the figure, and penetrates the top surface of the second sub rotating part 2351 and the surface of the second sub rotating part 2351 facing the first sub rotating part 2341. The second sub sliding groove 2354 communicates with the first sub sliding groove 2344 and forms a third sliding groove 2315 with the first sub sliding groove 2344.

[0190] The second sub-sliding part 2352 is fixedly connected with the first sub-sliding part 2342 and forms the first sliding part 232 with the first sub-sliding part 2342. The second sub-sliding part 2352 is provided with a second positioning column 2355 and an extension protrusion 2356, and the second positioning column 2355 and the extension protrusion 2356 are arranged at one end of the second sub-sliding part 2352 facing the first sub-swing arm 234. The second positioning column 2355 is located at one side of the second sub-sliding part 2352 close to the second sub-connection part 2353. The second positioning column 2355 is arranged on the surface of the second sub-sliding part 2352 facing the first sub-sliding part 2342, and protrudes from the surface of the second sub-sliding part 2352 facing the first sub-sliding part 2342 to the direction facing the first sub-sliding part 2342. The structure of the second positioning column 2355 is matched with the structure of the second positioning hole 2345. The second positioning column 2355 is inserted into the second positioning hole 2345 to realize the assembly positioning between the first sub-swing arm 234 and the second sub-swing arm 235, and ensure the assembly accuracy between the first sub-swing arm 234 and the second sub-swing arm 235. In other embodiments, the first sub-sliding part 2342 can be provided with a second positioning column, the second sub-sliding part 2352 can be provided with a second positioning hole, or the assembly positioning between the first sub-sliding part 2342 and the second sub-sliding part 2352 can be realized by other structures, which are not limited in the present application.

[0191] The extension protrusion 2356 is located at one side of the second sub-sliding part 2352 away from the second sub-connection part 2353, and is arranged in a spaced manner with the second positioning column 2355. The extension protrusion 2356 is arranged on the surface of the second sub-sliding part 2352 facing the first sub-sliding part 2342, and protrudes from the surface of the second sub-sliding part 2352 facing the first sub-sliding part 2342 to the direction facing the first sub-sliding part 2342. The extension protrusion 2356 is provided with a second clamping part 2357. The second clamping part 2357 is a clamping hole. The opening of the second clamping part 2357 is located on the top surface (not labeled in the figure) of the extension protrusion 2356. The second clamping part 2357 is recessed from the top surface to the bottom surface (not labeled in the figure) of the extension protrusion 2356 in the direction (negative direction of the Z axis in the figure) facing the first sub-sliding part 2342, and penetrates through the bottom surface of the extension protrusion 2356. In other embodiments, the second clamping part 2357 can also not penetrate through the bottom surface of the extension protrusion 2356.

[0192] The structure of the extension protrusion 2356 is matched with the structure of the first clamping groove 2346, and the structure of the second clamping part 2357 is matched with the structure of the first clamping part 2347. The extension protrusion 2356 is installed in the first clamping groove 2346, the first clamping part 2347 is arranged in the second clamping part 2357, and the first clamping part 2347 and the second clamping part 2357 are clamped with each other to realize the fixed connection between the second sub-sliding part 2352 and the first sub-sliding part 2342, and further realize the fixed connection between the first sub-swing arm 234 and the second sub-swing arm 235.

[0193] In other embodiments, the first clamping portion 2347 can be a clamping groove, the second clamping portion 2357 can be a clamping protrusion, or the first sub sliding portion 2342 and the second sub sliding portion 2352 can be fixedly connected by other structures, which are not limited in the present application.

[0194] The second sub connecting portion 2353 is in contact with the first sub connecting portion 2343 and forms the first connecting portion 233 with the first sub connecting portion 2343. The second sub connecting portion 2353 is connected between the second sub rotating portion 2351 and the second sub sliding portion 2352. The second sub connecting portion 2353 is provided with a first sub limiting hole 2332 penetrating through the second sub connecting portion 2353 along the thickness direction (the Z-axis direction shown in the figure) of the second sub connecting portion 2353. The second sub rotating portion 2351, the second sub sliding portion 2352, and the second sub connecting portion 2353 can be integrally formed.

[0195] In the pivot mechanism 130 shown in the embodiment, the first sub swing arm 234 and the second sub swing arm 235 are fixedly connected to form the first swing arm 23, which not only improves the machining precision of the first swing arm 23, but also improves the assembly precision between the first swing arm 23 and the base 10, and ensures the assembly stability of the pivot mechanism 130.

[0196] During the rotation of the first swing arm 23 relative to the base 10, the first rotating portion 231 rotates relative to the base 10 in the first mounting groove 122, the first sliding block 12a slides relative to the first rotating portion 231 in the first groove 2313, and the second sliding block 12b slides relative to the first rotating portion 231 in the second groove 2314. The first rotating portion 231 can slide relative to the base 10 along the length direction of the base 10 under the action of the first sliding block 12a and the second sliding block 12b, thereby driving the first sliding portion 232 to slide relative to the first fixed frame 21 along the length direction of the first fixed frame 21 in the first sliding groove 211. The end surface of the first sliding portion 232 away from the first connecting portion 233 can always abut against the groove bottom wall surface of the first sliding groove 211.

[0197] It can be understood that, during the rotation of the first swing arm 23 relative to the base 10, the first swing arm 23 only slides relative to the first fixed frame 21 along the length direction of the first fixed frame 21, the first swing arm 23 is tightly fitted with the first fixed frame 21, and the first swing arm 23 can always support the first fixed frame 21. When the electronic device 1000 falls, since the first swing arm 23 does not slide relative to the first fixed frame 21 along the width direction of the first fixed frame 21, the first fixed frame 21 does not drive the display module 200 to move towards the base 10, and the display module 200 does not interfere with the pivot mechanism 130 to fail, thereby improving the falling reliability of the electronic device 1000 and ensuring the use reliability of the electronic device 1000.

[0198] Moreover, since the first swing arm 23 cannot slide relative to the first fixed frame 21 along the width direction of the first fixed frame 21, the overlap amount between the first swing arm 23 and the first fixed frame 21 remains unchanged, the problem of large virtual position of the first swing arm 23 does not occur, the problem of the first swing arm 23 falling off the first fixed frame 21 can be effectively avoided, the assembly stability between the first swing arm 23 and the first fixed frame 21 is ensured, and the assembly stability of the rotating shaft mechanism 130 is further ensured.

[0199] In addition, since the end face of the first sliding part 232 away from the first rotating part 231 abuts against the groove bottom wall face of the first sliding groove 211, the electronic device 1000 is in an unfolded state, and when the user presses from the first housing 110 to the rotating shaft mechanism 130 during use, the display module 200 will not be redundantly stacked on the foldable part 230, the foldable part 230 will not be bulged or folded in the opposite arch, the display module 200 will not be damaged, and the use reliability of the electronic device 1000 is further ensured.

[0200] As shown in FIGS. 8 and 9, the second swing arm 24 includes a second rotating part 241, a second sliding part 242, and a second connecting part 243. The second rotating part 241 is installed on the base 10 and can rotate relative to the base 10. The second sliding part 242 is fixedly connected with the second rotating part 241. The second sliding part 242 is installed on the second fixed frame 22 and can slide relative to the second fixed frame 22 along the length direction of the second fixed frame 22. The second connecting part 243 is connected between the second rotating part 241 and the second sliding part 242 to realize the fixed connection between the second rotating part 241 and the second sliding part 242.

[0201] As shown in FIG. 10, the structure of the second rotating part 241 is matched with the structure of the second installation groove 123. The second rotating part 241 is installed in the second installation groove 123 and can rotate relative to the base 10 in the second installation groove 123. The center of rotation of the second rotating part 241 relative to the base 10 coincides with the central axis of the second installation groove 123. The second rotating part 241 includes a third side face 2411 and a fourth side face 2412. The third side face 2411 and the fourth side face 2412 are oppositely arranged along the length direction (Y-axis direction in the figure) of the second rotating part 241. The third side face 2411 is a surface of the second rotating part 241 facing the third groove side wall face, and the fourth side face 2412 is a surface of the second rotating part 241 facing the fourth groove side wall face.

[0202] As shown in FIG. 11 and FIG. 12, the second rotating part 241 is provided with a third groove 2413, a fourth groove 2414 and a fourth sliding groove 2415. The structures of the third groove 2413, the fourth groove 2414 and the fourth sliding groove 2415 can be respectively referred to the related descriptions of the first groove 2313, the second groove 2314 and the third sliding groove 2315 above, and will not be repeated here.

[0203] As shown in FIG. 13 and FIG. 14, the structure of the third groove 2413 is matched with the structure of the third sliding block 12c. The third sliding block 12c is screw fitted in the third groove 2413. The third sliding block 12c is installed in the third groove 2413 and can slide in the third groove 2413 relative to the second rotating part 241. Specifically, the third abutting surface of the third sliding block 12c faces the third groove 2413 and is screw fitted with the third groove 2413. Among them, the third abutting surface of the third sliding block 12c is arranged opposite to the groove bottom wall surface of the third groove 2413, and abuts the groove bottom wall surface of the third groove 2413. At this time, the second elastic member 16 provides a pre-tightening force for the screw fitting between the third sliding block 12c and the third groove 2413, so that the third abutting surface of the third sliding block 12c and the groove bottom wall surface of the third groove 2413 are always abutted, and it is guaranteed that the third sliding block 12c is always screw fitted in the third groove 2413.

[0204] The structure of the fourth groove 2414 is matched with the structure of the fourth sliding block 12d. The fourth sliding block 12d is screw fitted in the fourth groove 2414. The fourth sliding block 12d is installed in the fourth groove 2414 and can slide in the fourth groove 2414 relative to the second rotating part 241. Specifically, the fourth abutting surface of the fourth sliding block 12d faces the fourth groove 2414 and is screw fitted with the fourth groove 2414. Among them, the fourth abutting surface of the fourth sliding block 12d is arranged opposite to the groove bottom wall surface of the fourth groove 2414, and abuts the groove bottom wall surface of the fourth groove 2414.

[0205] The structure of the second sliding part 242 is matched with the structure of the second sliding groove 221. The second sliding part 242 is installed in the second sliding groove 221 and can slide in the second sliding groove 221 relative to the second fixed frame 22 along the length direction of the second fixed frame 22. Among them, the end surface of the second sliding part 242 away from the second rotating part 241 is arranged opposite to the groove bottom wall surface of the second sliding groove 221, and the groove bottom wall surface of the second sliding groove 221 limits the second sliding part 242 to slide in the second sliding groove 221 along the width direction of the second fixed frame 22. Exemplarily, the end surface of the second sliding part 242 away from the second rotating part 241 can abut the groove bottom wall surface of the second sliding groove 221.

[0206] In some other embodiments, the end surface of the second sliding portion 242 away from the second rotating portion 241 can be spaced apart from the groove bottom wall surface of the second sliding groove 221, for example, the gap between the end surface of the second sliding portion 242 away from the second rotating portion 241 and the groove bottom wall surface of the second sliding groove 221 can be relatively small, at this time, the groove bottom wall surface of the second sliding groove 221 can limit the movement distance of the second sliding portion 242 along the width direction of the second fixed frame 22 relative to the second fixed frame 22.

[0207] The second connecting portion 243 is provided with a second limiting hole 2431. The structure of the second limiting hole 2431 and the cooperation relationship between the second limiting hole 2431 and the second limiting block 12f can be respectively referred to the structure of the first limiting hole 2331 and the cooperation relationship between the first limiting hole 2331 and the first limiting block 12e described above, which will not be repeated here.

[0208] As shown in FIGS. 17 and 18, in the present embodiment, the second swing arm 24 includes a third sub-swing arm 244 and a fourth sub-swing arm 245, and the third sub-swing arm 244 and the fourth sub-swing arm 245 are fixedly connected. The structures of the third sub-swing arm 244 and the fourth sub-swing arm 245 can be respectively referred to the related descriptions of the first sub-swing arm 234 and the second sub-swing arm 235 above, which will not be repeated here.

[0209] In the pivot mechanism 130 shown in the present embodiment, the second swing arm 24 is formed by fixedly connecting the third sub-swing arm 244 and the fourth sub-swing arm 245, which not only can improve the machining precision of the second swing arm 24, but also can improve the assembly precision between the second swing arm 24 and the base 10, and ensure the assembly stability of the pivot mechanism 130.

[0210] In the process of the second swing arm 24 rotating relative to the base 10, the second rotating portion 241 rotates relative to the base 10 in the second mounting groove 123, the third sliding block 12c slides relative to the second rotating portion 241 in the third groove 2413, the fourth sliding block 12d slides relative to the second rotating portion 241 in the fourth groove 2414, and the second rotating portion 241 can slide relative to the base 10 along the length direction of the base 10 under the action of the third sliding block 12c and the fourth sliding block 12d, thereby driving the second sliding portion 242 to slide relative to the second fixed frame 22 along the length direction of the second fixed frame 22 in the second sliding groove 221. The end surface of the second sliding portion 242 away from the second connecting portion 243 can always abut against the groove bottom wall surface of the second sliding groove 221.

[0211] It can be understood that in the process of rotating the second swing arm 24 relative to the base 10, the second swing arm 24 only slides relative to the second fixed frame 22 along the length direction of the second fixed frame 22, the second swing arm 24 and the second fixed frame 22 are tightly matched, and the second swing arm 24 can always support the second fixed frame 22. When the electronic device 1000 falls, since the second swing arm 24 cannot slide relative to the second fixed frame 22 along the width direction of the second fixed frame 22, the second fixed frame 22 cannot drive the display module 200 to move towards the base 10, and the display module 200 cannot fail due to interference with the rotating shaft mechanism 130, thereby improving the falling reliability of the electronic device 1000 and ensuring the use reliability of the electronic device 1000.

[0212] Moreover, since the second swing arm 24 cannot slide relative to the second fixed frame 22 along the width direction of the second fixed frame 22, the overlap amount between the second swing arm 24 and the second fixed frame 22 always remains unchanged, the second swing arm 24 cannot have a large virtual position problem, the problem of the second swing arm 24 falling off the second fixed frame 22 can be effectively avoided, the assembly stability between the second swing arm 24 and the second fixed frame 22 is ensured, and the assembly stability of the rotating shaft mechanism 130 is further ensured.

[0213] In addition, since the end face of the second sliding part 242 away from the second rotating part 241 abuts against the groove bottom wall surface of the second sliding groove 221, the electronic device 1000 is in an unfolded state, and when the user presses from the second housing 120 to the rotating shaft mechanism 130 during use, the display module 200 cannot have redundant accumulation in the foldable part 230, the foldable part 230 cannot have a problem of bulging or folding back, the display module 200 will not be damaged, and the use reliability of the electronic device 1000 is further ensured.

[0214] As shown in FIGS. 8 and 9, the third swing arm 25 includes a third rotating part 251 and a third connecting part 252. The third rotating part 251 is installed on the base 10 and can rotate relative to the base 10. The third connecting part 252 is connected between the third rotating part 251 and the first fixed frame 21. The third swing arm 25 and the first fixed frame 21 can be integrally formed.

[0215] The fourth swing arm 26 includes a fourth rotating part 261 and a fourth connecting part 262. The fourth rotating part 261 is installed on the base 10 and can rotate relative to the base 10. The fourth connecting part 262 is connected between the fourth rotating part 261 and the second fixed frame 22. The fourth swing arm 26 and the second fixed frame 22 can be integrally formed.

[0216] Please refer to FIG. 19 to FIG. 21, FIG. 19 is a structural schematic diagram of the synchronous assembly 30 in the rotating shaft mechanism 130 shown in FIG. 5, FIG. 20 is a structural schematic diagram of the synchronous assembly 30 shown in FIG. 19 at another angle, FIG. 21 is a structural schematic diagram of the rotating shaft mechanism 130 shown in FIG. 3 along the I-I section, and FIG. 22 is a structural schematic diagram of the rotating shaft mechanism 130 shown in FIG. 4 along the II-II section. Wherein, the I-I section refers to the section along the plane where the I-I line is located, and other similar descriptions in this paper can be understood in the same way.

[0217] The synchronous slider 31 is slidingly fitted in the third sliding groove 2315 and the fourth sliding groove 2415, and is installed in the first installation groove 122 and the second installation groove 123, and can slide in the first installation groove 122 and the second installation groove 123 relative to the base 10 along the length direction of the base 10. Specifically, the synchronous slider 31 is installed in the second sliding hole 128 and can slide in the second sliding hole 128 relative to the base 10 along the length direction of the base 10. In the process of rotating the first swing arm 23 and the second swing arm 24 relative to the base 10, the first swing arm 23 and the second swing arm 24 can drive the synchronous slider 31 to slide in the first installation groove 122 and the second installation groove 123 relative to the base 10 along the length direction of the base 10.

[0218] The synchronous slider 31 is provided with a third sliding part 312, a fourth sliding part 313 and a fifth sliding part 311. The third sliding part 312 and the fourth sliding part 313 are both provided on the top surface (not marked in the figure) of the synchronous slider 31, and the top surface of the synchronous slider 31 protrudes away from the bottom surface (not marked in the figure) in the direction of the positive direction of the Z axis (as shown in the figure). Along the length direction of the synchronous slider 31 (the direction of the X axis as shown in the figure), the third sliding part 312 and the fourth sliding part 313 are arranged at intervals. The third sliding part 312 is slidingly fitted in the third sliding groove 2315 to realize the sliding connection between the synchronous slider 31 and the first swing arm 23. Wherein, the third sliding part 312 is slidingly fitted in the first sub-sliding groove 2344 and the second sub-sliding groove 2354 to realize the sliding connection between the synchronous slider 31 and the first sub-swing arm 234 and the second sub-swing arm 235. The fourth sliding part 313 is slidingly fitted in the fourth sliding groove 2415 to realize the sliding connection between the synchronous slider 31 and the second swing arm 24. Wherein, the fourth sliding part 313 is slidingly fitted in the third sub-sliding groove (not marked in the figure) of the third sub-swing arm 244 and the fourth sub-sliding groove (not marked in the figure) of the fourth sub-swing arm 245 to realize the sliding connection between the synchronous slider 31 and the third sub-swing arm 244 and the fourth sub-swing arm 245.

[0219] The fifth sliding part 311 is arranged on the bottom surface of the synchronous slider 31 and protrudes from the bottom surface of the synchronous slider 31 in a direction away from the top surface (the negative direction of the Z axis shown in the figure). The structure of the fifth sliding part 311 is matched with the structure of the second sliding hole 128. The fifth sliding part 311 is installed in the second sliding hole 128 and can slide relative to the base 10 along the length direction of the base 10 in the second sliding hole 128 to realize the sliding connection between the synchronous slider 31 and the base 10. The fifth sliding part 311 includes two sub-sliding parts 3111 arranged at intervals along the length direction of the fifth sliding part 311. The structure of each sub-sliding part 3111 is matched with the structure of a sub-sliding hole 1281. Each sub-sliding part 3111 is installed in a sub-sliding hole 1281 and can slide relative to the base 10 along the length direction of the base 10 in the sub-sliding hole 1281 to realize the sliding connection between the synchronous slider 31 and the base 10.

[0220] During the rotation of the first swing arm 23 relative to the base 10, under the action of the first elastic member 15, the first abutting surface of the first sliding block 12a in the sliding support 14 always abuts against the groove bottom wall surface of the first groove 2313 in the first swing arm 23. The first swing arm 23 will slide relative to the base 10 along the length direction of the base 10 under the action of the sliding support 14, and drive the synchronous slider 31 to slide relative to the base 10 along the length direction of the base 10 in the first mounting groove 122 and the second mounting groove 123. The synchronous slider 31 will drive the second swing arm 24 to slide relative to the base 10 along the length direction of the base 10. Since the third abutting surface of the third sliding block 12c in the sliding support 14 always abuts against the groove bottom wall surface of the third groove 2413 in the second swing arm 24, the synchronous slider 31 will also drive the second swing arm 24 to rotate relative to the base 10, thereby realizing the synchronous rotation of the first swing arm 23 and the second swing arm 24 relative to the base 10.

[0221] It can be understood that during the rotation of the second swing arm 24 relative to the base 10, the second swing arm 24 can also drive the synchronous slider 31 to slide relative to the base 10 along the length direction of the base 10. The synchronous slider 31 can not only drive the first swing arm 23 to slide relative to the base 10 along the length direction of the base 10, but also can drive the first swing arm 23 to rotate relative to the base 10, thereby realizing the synchronous rotation of the first swing arm 23 and the second swing arm 24 relative to the base 10.

[0222] In the pivot mechanism 130 shown in the embodiment, the synchronous slider 31 is fixedly connected with the first swing arm 23 and the second swing arm 24. The synchronous slider 31 can not only synchronously transmit the rotation of the first swing arm 23 relative to the base 10 to the second swing arm 24, but also synchronously transmit the rotation of the second swing arm 24 relative to the base 10 to the first swing arm 23, so as to realize the accurate synchronization of the pivot mechanism 130. Moreover, in the pivot mechanism 130 shown in the embodiment, the first elastic member 15 and the second elastic member 16 are used to pre-tighten the abutment between the sliding support 14 and the first swing arm 23 and the second swing arm 24, so as to realize the zero-gap cooperation between the first abutment surface of the first slider 12a and the groove bottom wall surface of the first groove 2313, and between the third abutment surface of the third slider 12c and the groove bottom wall surface of the third groove 2413. This can greatly improve the synchronization performance of the pivot mechanism 130, and can avoid the problem of increased gap between the sliding support 14 and the first swing arm 23 and the second swing arm 24 after long-time use of the pivot mechanism 130, so as to always ensure the synchronization performance of the pivot mechanism 130.

[0223] In addition, compared with the existing pivot mechanism that uses a synchronous gear to realize synchronous rotation, in the pivot mechanism 130 shown in the embodiment, the first swing arm 23 and the second swing arm 24 are both realized in the form of a spiral virtual shaft to realize the rotation cooperation with the base 10. The pivot mechanism 130 does not need to design a pin shaft and a synchronous gear, which not only helps to reduce the thickness of the pivot mechanism 130, but also reserves more thickness space to accommodate the base 10, the first swing arm 23 and the second swing arm 24 and other structural members. The base 10, the first swing arm 23 and the second swing arm 24 and other structural members can be designed to have a larger thickness to improve the strength and rigidity of the pivot mechanism 130.

[0224] Please refer to FIGS. 23-26. FIG. 23 is a partial structure schematic view of the pivot mechanism 130 of the electronic device 100 in the electronic equipment 1000 shown in FIG. 2 in the second embodiment, FIG. 24 is an exploded structure schematic view of the pivot mechanism 130 shown in FIG. 23, FIG. 25 is a partial structure schematic view of the base 10 in the pivot mechanism 130 shown in FIG. 23, and FIG. 26 is an exploded structure schematic view of the base 10 shown in FIG. 25. The pivot mechanism 130 shown in FIG. 23 is in an unfolded state.

[0225] The pivot mechanism 130 shown in the embodiment is different from the pivot mechanism 130 shown in the first embodiment in that the first abutment surface of the first slider 12a, the second abutment surface of the second slider 12b, the third abutment surface of the third slider 12c and the fourth abutment surface of the fourth slider 12d are all planes. For example, the first abutment surface, the second abutment surface, the third abutment surface and the fourth abutment surface are all parallel to the XZ plane.

[0226] In addition, the base 10 is further provided with a first sliding hole 12i and a third sliding hole 12j. The shaft cover 13 is provided with the first sliding hole 12i and the third sliding hole 12j. Specifically, the first sliding hole 12i is located between the first sliding block 12a and one of the sub sliding holes 1281, and is spaced apart from the first sliding block 12a and the one of the sub sliding holes 1281. The opening of the first sliding hole 12i is located on the top surface (not marked in the figure) of the base 10 and the first groove bottom wall surface 122a. The first sliding hole 12i is recessed from the top surface and the first groove bottom wall surface 122a of the base 10 to the direction (the negative direction of the Z axis shown in the figure) of the bottom surface (not marked in the figure) of the base 10, and penetrates the bottom surface (not marked in the figure) of the shaft cover 13. The extension direction of the first sliding hole 12i intersects the width direction of the base 10. For example, the extension direction of the first sliding hole 12i is helical, and the first sliding hole 12i extends helically from the top surface of the base 10 to the direction of the first groove bottom wall surface 122a around the rotation center of the first rotating part 231. In other embodiments, the extension direction of the first sliding hole 12i can also be linear, for example, the extension direction of the first sliding hole 12i can be parallel to the length direction of the base 10, or the included angle between the extension direction of the first sliding hole 12i and the width direction of the base 10 can be greater than 0 degrees and less than 90 degrees.

[0227] The third sliding hole 12j is located between the second sliding block 12b and one of the sub sliding holes 1281, and is spaced apart from the second sliding block 12b and the one of the sub sliding holes 1281. Specifically, the opening of the third sliding hole 12j is located on the top surface of the base 10 and the second groove bottom wall surface 123a. The third sliding hole 12j is recessed from the top surface and the second groove bottom wall surface 123a of the base 10 to the direction (the negative direction of the Z axis shown in the figure) of the bottom surface (not marked in the figure) of the base 10, and penetrates the bottom surface (not marked in the figure) of the shaft cover 13. The extension direction of the third sliding hole 12j intersects the width direction of the base 10. For example, the extension direction of the third sliding hole 12j is helical, and the third sliding hole 12j extends helically from the top surface of the base 10 to the direction of the second groove bottom wall surface 123a around the rotation center of the second rotating part 241. In other embodiments, the extension direction of the third sliding hole 12j can also be linear, for example, the extension direction of the third sliding hole 12j can be parallel to the length direction of the base 10, or the included angle between the extension direction of the third sliding hole 12j and the width direction of the base 10 can be greater than 0 degrees and less than 90 degrees.

[0228] Please refer to FIG. 27 and FIG. 28 together, FIG. 27 is a structural schematic diagram of the first swing arm 23 and the second swing arm 24 of the connecting assembly 20 in the rotating shaft mechanism 130 shown in FIG. 17, and FIG. 28 is a structural schematic diagram of the first swing arm 23 and the second swing arm 24 shown in FIG. 27 at another angle.

[0229] The connecting assembly 20 shown in the embodiment is different from the connecting assembly 20 shown in the first embodiment in that the bottom wall surface of the first groove 2313 and the bottom wall surface of the second groove 2314 in the first swing arm 23 are both flat surfaces. For example, the bottom wall surface of the first groove 2313 and the bottom wall surface of the second groove 2314 are both parallel to the XZ plane. In addition, the first rotating part 231 is further provided with a first slide column 2316, which is arranged on the side of the first rotating part 231 away from the first connecting part 233 and is spaced apart from the third slide groove 2315. Specifically, the first slide column 2316 is arranged on the bottom surface of the first rotating part (not marked in the figure) and protrudes from the bottom surface of the first rotating part 231 toward the top surface (not marked in the figure). The first slide column 2316 is arranged on the first sub-rotating part 2341 of the first sub-swing arm 234 and is located on the side of the first sub-rotating part 2341 away from the second sub-rotating part 2351 of the second sub-swing arm 235 and is spaced apart from the first sub-slide groove 2344. The structure of the first slide column 2316 is matched with the structure of the first slide hole 121i. The first slide column 2316 is slidably arranged in the first slide hole 121i. The first slide column 2316 is arranged in the first slide hole 121i and can slide in the first slide hole 121i relative to the base 10 along the extension direction of the first slide hole 121i.

[0230] In other embodiments, the first slide column 2316 can also be arranged on the second sub-rotating part 2351 of the second sub-swing arm 235 and located on the side of the second sub-rotating part 2351 away from the first sub-rotating part 2341 of the first sub-swing arm 234 and spaced apart from the second sub-slide groove 2354.

[0231] Please refer to FIGS. 29 and 30 together. FIG. 29 is a structure schematic diagram of the hinge mechanism 130 shown in FIG. 23 after being partially cut open. FIG. 30 is a structure schematic diagram of the hinge mechanism 130 shown in FIG. 23 in another state after being partially cut open. In FIG. 29, the hinge mechanism 130 is in an unfolded state. In FIG. 30, the first fixed frame 21 and the first swing arm 23 are folded relative to the base 10, and the second fixed frame 22 and the second swing arm 24 are unfolded relative to the base 10.

[0232] As shown in FIG. 30, when the first swing arm 23 is folded relative to the base 10, the first abutting surface of the first slide block 12a is spaced apart from and arranged opposite to the bottom wall surface of the first groove 2313, and the second abutting surface of the second slide block 12b is arranged opposite to and abuts against the bottom wall surface of the second groove 2314. As shown in FIG. 29, when the hinge mechanism 130 is in the unfolded state, the first swing arm 23 is unfolded relative to the base 10, the first abutting surface of the first slide block 12a is arranged opposite to and abuts against the bottom wall surface of the first groove 2313, and the second abutting surface of the second slide block 12b is spaced apart from and arranged opposite to the bottom wall surface of the second groove 2314.

[0233] Please refer to Fig. 31, which is a structural schematic diagram of the rotating shaft mechanism 130 shown in Fig. 23 along III-III.

[0234] During the rotation of the first swing arm 23 relative to the base 10, the first slide post 2316 slides in the first slide hole 12i relative to the base 10, so as to drive the first swing arm 23 to slide relative to the base 10 along the length direction of the base 10, and then drive the first sliding part 232 to slide in the first slide groove 211 relative to the first fixed frame 21 along the length direction of the first fixed frame 21.

[0235] In the second swing arm 24, the groove bottom wall surface of the third groove 2413 and the groove bottom wall surface of the fourth groove 2414 are both planes. For example, the groove bottom wall surface of the third groove 2413 and the groove bottom wall surface of the fourth groove 2414 are both parallel to the XZ plane. In addition, the second rotating part 241 is further provided with a second slide post 2416, which is arranged on the side of the second rotating part 241 away from the second connecting part 243 and is spaced apart from the fourth slide groove 2415. The structure of the second slide post 2416 can refer to the related description of the first slide post 2316 above. The structure of the second slide post 2416 is matched with the structure of the third slide hole 12j. The second slide post 2416 is slidably installed in the third slide hole 12j. The second slide post 2416 is installed in the third slide hole 12j and can slide in the third slide hole 12j relative to the base 10 along the extension direction of the third slide hole 12j.

[0236] In this embodiment, when the rotating shaft mechanism 130 is in the folded state, the third abutting surface of the third slide block 12c is spaced apart from and arranged opposite to the groove bottom wall surface of the third groove 2413, and the fourth abutting surface of the fourth slide block 12d is arranged opposite to and abuts against the groove bottom wall surface of the fourth groove 2414. As shown in Fig. 29, when the rotating shaft mechanism 130 is in the unfolded state, the third abutting surface of the third slide block 12c is arranged opposite to and abuts against the groove bottom wall surface of the third groove 2413, and the fourth abutting surface of the fourth slide block 12d is spaced apart from and arranged opposite to the groove bottom wall surface of the fourth groove 2414.

[0237] As shown in Fig. 31, during the rotation of the second swing arm 24 relative to the base 10, the second slide post 2416 slides in the third slide hole 12j relative to the base 10, so as to drive the second swing arm 24 to slide relative to the base 10 along the length direction of the base 10, and then drive the second sliding part 242 to slide in the second slide groove 221 relative to the second fixed frame 22 along the length direction of the second fixed frame 22.

[0238] In the electronic device 1000 shown in the embodiment, in the opening and closing process, the first swing arm 23 only slides relative to the first fixed frame 21 along the length direction of the first fixed frame 21, the second swing arm 24 only slides relative to the second fixed frame 22 along the length direction of the second fixed frame 22, the first swing arm 23 and the first fixed frame 21, and the second swing arm 24 and the second fixed frame 22 are tightly matched, the first swing arm 23 can always support the first fixed frame 21, and the second swing arm 24 can always support the second fixed frame 22. When the electronic device 1000 falls, since the first swing arm 23 cannot slide relative to the first fixed frame 21 along the width direction of the first fixed frame 21, and the second swing arm 24 cannot slide relative to the second fixed frame 22 along the width direction of the second fixed frame 22, the first fixed frame 21 and the second fixed frame 22 cannot drive the display module 200 to move towards the base 10, the display module 200 cannot fail due to interference with the hinge mechanism 130, the drop reliability of the electronic device 1000 is improved, and the use reliability of the electronic device 1000 is ensured.

[0239] Moreover, since the first swing arm 23 cannot slide relative to the first fixed frame 21 along the width direction of the first fixed frame 21, and the second swing arm 24 cannot slide relative to the second fixed frame 22 along the width direction of the second fixed frame 22, the overlap amount of the first swing arm 23 and the first fixed frame 21, and the overlap amount of the second swing arm 24 and the second fixed frame 22 always remain unchanged, the first swing arm 23 and the second swing arm 24 cannot have the problem of large virtual position, the problem of the first swing arm 23 falling off the first fixed frame 21 and the problem of the second swing arm 24 falling off the second fixed frame 22 can be effectively avoided, the assembly stability between the first swing arm 23 and the first fixed frame 21, and between the second swing arm 24 and the second fixed frame 22 is ensured, and further the assembly stability of the hinge mechanism 130 is ensured.

[0240] In addition, since the end surface of the first sliding part 232 away from the first connecting part 233 abuts against the groove bottom wall surface of the first sliding groove 211, and the end surface of the second sliding part 242 away from the second connecting part 243 abuts against the groove bottom wall surface of the second sliding groove 221, when the user presses in the direction of the hinge mechanism 130 from the first shell 110 and the second shell 120 during use, the display module 200 cannot have redundant accumulation at the foldable part 230, the foldable part 230 cannot have the problem of bulging or folding back, the display module 200 will not be damaged, and the use reliability of the electronic device 1000 is further ensured.

[0241] The above merely describes a specific implementation of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can easily think of changes or replacements within the technical range disclosed in the present application, which shall be covered within the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A rotation shaft mechanism characterized by comprising: The utility model relates to a first swing arm, first fixed frame and base, and the first swing arm includes a first rotating part and a first sliding part, the first rotating part is rotatably connected with the base, and the first sliding part is slidably connected with the first fixed frame. During the rotation of the first swing arm relative to the base, the first sliding part slides along the length direction of the first fixed frame relative to the first fixed frame. The first fixed frame is provided with a first sliding groove, the first sliding part is installed in the first sliding groove, and the first sliding part can slide along the length direction of the first fixed frame relative to the first fixed frame in the first sliding groove. The end surface of the first sliding part away from the first rotating part is oppositely arranged with the groove bottom wall surface of the first sliding groove, and the groove bottom wall surface of the first sliding groove is used for limiting the first sliding part to slide along the width direction of the first fixed frame in the first sliding groove. The first rotating part includes a first side surface, the first rotating part is provided with a first groove, the opening of the first groove is located on the first side surface, and the first groove is a spiral groove.

2. The rotation shaft mechanism according to claim 1, wherein The base is provided with a first sliding block, and the first sliding block is screwedly matched with the first groove. During the rotation of the first swing arm relative to the base, the first sliding block slides in the first groove relative to the first rotating part, and the first rotating part slides along the length direction of the base relative to the base.

3. A pivot mechanism according to claim 1 or 2, characterised in that The first sliding block includes a first abutting surface towards the first groove, the first abutting surface is a spiral surface, and is screwedly matched with the first groove. The first rotating part further includes a second side surface oppositely arranged with the first side surface, the first rotating part is further provided with a second groove, the opening of the second groove is located on the second side surface, the second groove is a spiral groove, and is arranged in parallel with the first groove. The base is further provided with a second sliding block, and the second sliding block is screwedly matched with the second groove.

4. The rotation shaft mechanism according to claim 3, wherein During the rotation of the first swing arm relative to the base, the second sliding block slides in the second groove relative to the first rotating part, and the first rotating part slides along the length direction of the base relative to the base.

5. The rotation shaft mechanism according to claim 3, wherein The base is provided with a first mounting groove, the opening of the first mounting groove is located on the top surface of the base, the groove wall surface of the first mounting groove includes a first groove side wall surface oppositely arranged with the first side surface, and the first sliding block is arranged on the first groove side wall surface. The first rotating part is rotatably installed in the first mounting groove. During the rotation of the first swing arm relative to the base, the first rotating part rotates in the first mounting groove relative to the base.

6. The rotation axis mechanism according to any one of claims 3 to 5, characterized in that, The base is further provided with a first sliding hole, and the extension direction of the first sliding hole intersects with the width direction of the base. The first rotating part is provided with a first sliding column, the first sliding column is arranged on the bottom surface of the first rotating part, and is slidably installed in the first sliding hole. During the rotation of the first swing arm relative to the base, the first sliding column slides in the first sliding hole relative to the base, and the first rotating part slides along the length direction of the base relative to the base. ​ 7. The revolute mechanism according to any one of claims 1 to 6, wherein ​ ​ ​ 8. The revolute mechanism according to any one of claims 3 to 7, characterized in that The rotating shaft mechanism further comprises a second fixed frame and a second swing arm, the second swing arm comprises a second rotating part and a second sliding part, the second rotating part is rotationally connected with the base, and the second sliding part is slidingly connected with the second fixed frame; During rotation of the second swing arm relative to the base, the second sliding part slides relative to the second fixed frame along the length direction of the second fixed frame.

9. The rotation shaft mechanism according to claim 8, wherein The second fixed frame is provided with a second sliding groove, the second sliding part is mounted in the second sliding groove and can slide relative to the second fixed frame along the length direction of the second fixed frame in the second sliding groove; The end surface of the second sliding part away from the second rotating part is arranged opposite the groove bottom wall surface of the second sliding groove, and the groove bottom wall surface of the second sliding groove is used to limit the second sliding part from sliding in the second sliding groove along the width direction of the second fixed frame.

10. A pivot mechanism according to claim 8 or 9, characterised in that The rotating shaft mechanism further comprises a synchronous sliding block, the synchronous sliding block is mounted on the base and slidingly connected between the first rotating part and the second rotating part and slidingly connected with the base; During rotation of the first swing arm and / or the second swing arm relative to the base, the synchronous sliding block moves relative to the base along the length direction of the base.

11. The rotation shaft mechanism according to claim 10, wherein The first rotating part is provided with a third sliding groove, the third sliding groove is arranged at intervals with the first groove, and the second rotating part is provided with a fourth sliding groove; The synchronous sliding block is provided with a third sliding part and a fourth sliding part, the third sliding part is slidingly fitted in the third sliding groove, and the fourth sliding part is slidingly fitted in the fourth sliding groove.

12. A pivot mechanism according to claim 10 or 11, characterised in that The first swing arm comprises a first sub-swing arm and a second sub-swing arm, the first sub-swing arm and the second sub-swing arm are fixedly connected and both are slidingly connected with the synchronous sliding block; The second swing arm comprises a third sub-swing arm and a fourth sub-swing arm, the third sub-swing arm and the fourth sub-swing arm are fixedly connected and both are slidingly connected with the synchronous sliding block.

13. The rotation mechanism according to claim 12, wherein The first sub-swing arm is provided with a first clamping part, the first clamping part is arranged at one end of the first sub-swing arm facing the second sub-swing arm, the second sub-swing arm is provided with a second clamping part, the second clamping part is arranged at one end of the second sub-swing arm facing the first sub-swing arm, and the second clamping part is clamped with the first clamping part.

14. The revolute mechanism according to any one of claims 10 to 13, wherein The base comprises a shaft cover, a sliding support and a first elastic member, the sliding support is mounted on the shaft cover and can slide relative to the shaft cover along the length direction of the shaft cover, the sliding support comprises the first sliding block, and the first elastic member is located on the side of the sliding support away from the first sliding block and abuts against the sliding support and is used to make the first sliding block screw-fitted in the first groove.

15. The revolute mechanism according to any one of claims 10 to 14, wherein The base is provided with a second sliding hole, and the extension direction of the second sliding hole is parallel to the length direction of the base; The synchronous sliding block is mounted in the second sliding hole and can slide relative to the base along the length direction of the base in the second sliding hole.

16. The revolute mechanism according to any one of claims 1 to 13, wherein The base is provided with a first limiting block, the first swing arm further comprises a first connecting portion connected between the first rotating portion and the first sliding portion, the first connecting portion is provided with a first limiting hole, and an opening of the first limiting hole is located on a bottom surface of the first connecting portion; When the rotating shaft mechanism is in the unfolded state, the first limiting block is arranged in the first limiting hole, and the base abuts against the bottom surface of the first connecting portion.

17. A swivel mechanism, characterized by Comprise: a base, the first base is provided with a first sliding block and a third sliding block; a first swing arm, the first swing arm comprises a first rotating portion, the first rotating portion is rotationally connected with the base, the first rotating portion comprises a first side surface, the first rotating portion is provided with a first groove, an opening of the first groove is located on the first side surface, and the first groove is a spiral groove; a second swing arm, the second swing arm comprises a second rotating portion, the second rotating portion is rotationally connected with the base, the second rotating portion comprises a third side surface, the second rotating portion is provided with a third groove, an opening of the third groove is located on the third side surface, and the third groove is a spiral groove; and a synchronous sliding block, the synchronous sliding block is installed on the base and is slidingly connected between the first rotating portion and the second rotating portion and is slidingly connected with the base; wherein the first sliding block is spirally matched with the first groove, and the second sliding block is spirally matched with the second groove; in the rotating process of the first swing arm relative to the base, the first sliding block slides relative to the first rotating portion in the first groove, and the synchronous sliding block slides relative to the base along a length direction of the base; in the rotating process of the second swing arm relative to the base, the second sliding block slides relative to the second rotating portion in the second groove, and the synchronous sliding block slides relative to the base along the length direction of the base.

18. An electronic device, comprising: The electronic device comprises a first shell, a second shell and the rotating shaft mechanism as claimed in any one of claims 1 to 17, and the rotating shaft mechanism is connected between the first shell and the second shell.

19. The electronic device of claim 18, wherein, The electronic device further comprises a display module, the display module comprises a first display part, a second display part and a foldable part, the first display part is installed on the first shell, the second display part is installed on the second shell, the foldable part is connected between the first display part and the second display part, and is arranged opposite to the rotating shaft mechanism.

Images