Rotary shaft mechanism and electronic device

Abstract

A rotary shaft mechanism (11) and an electronic device (10). The rotary shaft mechanism (11) comprises a base (111), half-shaft modules (112), a first support rod (113) and a second support rod (114), wherein a first link assembly (1121) of each half-shaft module (112) comprises a first mounting plate (11211), a first rotating member (11212), a first link member (11213), a second link member (11214) and a first sliding member (11215); and a second link assembly (1122) of each half-shaft module comprises a second mounting plate (11221), a second rotating member (11222), a third link member (11223), a fourth link member (11224) and a second sliding member (11225). When the electronic device (10) is folded or unfolded, the first rotating member (11212) rotates around the base (111) and slides relative to the first mounting plate (11211), and the second rotating member (11222) rotates around the base (111) and slides relative to the second mounting plate (11221); when the electronic device is unfolded, the first support rod (113), the second support rod (114) and the base (111) form a flat support face; and when the electronic device is folded, the first support rod (113), the second support rod (114) and the base (111) form a U-shaped support face.

Description

Rotating shaft mechanism and electronic equipment

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office of the People's Republic of China on November 15, 2023, with application number 202311527678.0 and invention name "A rotating shaft mechanism and electronic device", the entire contents of which are incorporated by reference into this application. Technical Field

[0003] The present application relates to the technical field of electronic equipment, and in particular to a rotating shaft mechanism and electronic equipment. Background Art

[0004] With the gradual maturity of flexible display technology, the display mode of electronic devices has undergone tremendous changes. Foldable flexible screen mobile phones, foldable flexible screen tablets, and wearable electronic devices with foldable flexible screens are an important evolution direction of future smart electronic devices.

[0005] The hinge mechanism, a crucial component for achieving foldable electronic devices, possesses continuous foldability. Besides enabling the transition between folded and unfolded states, the hinge mechanism also provides sufficient support for the flexible display screen in various folded positions. However, existing hinge mechanisms are complex and offer limited support for the flexible display screen, which can easily cause strain or compression on the display screen, compromising the overall reliability of the electronic device.

[0006] Summary of the Invention

[0007] The present application provides a hinge mechanism and an electronic device to simplify the structure of the hinge mechanism and improve the supporting performance of a flexible display screen.

[0008] In a first aspect, the present application provides a hinge mechanism. The hinge mechanism includes a base and at least one half-axle module, wherein the half-axle module includes a first link assembly and a second link assembly. Specifically, the first link assembly includes a first mounting plate, a first rotating member, a first link assembly, a second link assembly, and a first sliding member. The first mounting plate and the first rotating member are disposed on one side of the base. The first rotating member is slidably connected to the first mounting plate and rotatably connected to the base. The first link assembly is rotatably connected to the side of the first rotating member facing the base. The second link assembly is rotatably connected to the side of the first link assembly facing away from the first rotating member. The first sliding member is rotatably connected to the side of the second link assembly facing away from the first link assembly. Correspondingly, the second link assembly includes a second mounting plate, a second rotating member, a third link assembly, a fourth link assembly, and a second sliding member. The second mounting plate and the second rotating member are disposed on the side of the base facing away from the first mounting plate. The second rotating member is slidably connected to the second mounting plate and rotatably connected to the base. The third link assembly is rotatably connected to the side of the second rotating member facing the base. The fourth link is rotatably connected to a side of the third link away from the second rotatable member. The second sliding member is rotatably connected to a side of the fourth link away from the third link. The second sliding member is fixedly connected to the first mounting plate, and the first sliding member is fixedly connected to the second mounting plate. When the hinge mechanism is applied to a foldable electronic device, the flexible display screen of the electronic device is arranged on one side of the hinge mechanism. In addition, the hinge mechanism also includes a first support rod and a second support rod. The first support rod is located between the first mounting plate and the base, and the half-axis module and the base are rotatably connected to the first support rod respectively. The second support rod is located between the second mounting plate and the base, and the half-axis module and the base are rotatably connected to the second support rod respectively. The first support rod has a first support surface on the side facing the flexible display screen, the second support rod has a second support surface on the side facing the flexible display screen, and the base has a third support surface on the side facing the flexible display screen.

[0009] When the electronic device is folded, the first mounting plate and the second mounting plate are folded relative to each other. When the electronic device is unfolded, the first mounting plate and the second mounting plate are unfolded relative to each other. During the process of relative folding or unfolding of the first mounting plate and the second mounting plate, the first rotating member rotates around the base and slides relative to the first mounting plate, and the second rotating member rotates around the base and slides relative to the second mounting plate. When the hinge mechanism is in a flattened state, the first supporting surface, the second supporting surface, and the third supporting surface can form a flat supporting surface for supporting the flexible display screen. When the hinge mechanism is in a folded state, the first supporting surface, the second supporting surface, and the third supporting surface can form a U-shaped supporting surface for supporting the flexible display screen. The above-mentioned hinge mechanism uses a chain assembly as the main rotation, and has a simple structure. In addition, during the folding and unfolding process, the first support rod and the second support rod can provide better support to the flexible display screen, avoiding pulling or squeezing of the flexible display screen.

[0010] The first support rod and the axle module are rotatably connected, specifically, by connecting the first support rod with the first mounting plate at a side remote from the base, or by connecting the first support rod with the first rotating member at a side remote from the base, thereby enabling relative movement between the first support rod and the axle module. Similarly, the second support rod and the axle module are rotatably connected, specifically, by connecting the second support rod with the second mounting plate at a side remote from the base, or by connecting the second support rod with the second rotating member at a side remote from the base, thereby enabling relative movement between the second support rod and the axle module.

[0011] When the first support rod is specifically provided, a first arc arm is provided on the side of the first support rod facing the base, and a first pin is provided on the side of the first support rod facing the first mounting plate. A first arc guide groove is provided on the side of the base facing the first support rod, and the first arc arm is accommodated in the first arc guide groove and achieves rotational connection between the first support rod and the base by sliding in the first arc guide groove. In one possible implementation, the first support rod is connected to the first mounting plate. Specifically, a second arc guide groove is provided on the side of the first mounting plate facing the first support rod, and the first pin is accommodated in the second arc guide groove and achieves relative movement between the first support rod and the first mounting plate by sliding in the second arc guide groove. In another possible implementation, the first support rod is connected to the first rotating member. Specifically, a second arc guide groove is provided on the side of the first rotating member facing the first support rod, and the first pin is accommodated in the second arc guide groove and achieves relative movement between the first support rod and the first rotating member by sliding in the second arc guide groove. Similarly, when the second support rod is specifically provided, a second arc arm is provided on the side of the second support rod facing the base, and a second pin is provided on the side of the second support rod facing the second mounting plate. A third arc guide groove is provided on the side of the base facing the second support rod, and the second arc arm is accommodated in the third arc guide groove and achieves rotational connection between the second support rod and the base by sliding in the third arc guide groove. In one possible implementation, the second support rod is connected to the second mounting plate. A fourth arc guide groove is provided on the side of the second mounting plate facing the second support rod, and the second pin is accommodated in the fourth arc guide groove and achieves relative movement between the second support rod and the second mounting plate by sliding in the fourth arc guide groove. In another possible implementation, the second support rod is connected to the second rotating member. A fourth arc guide groove is provided on the side of the second rotating member facing the second support rod, and the second pin is accommodated in the fourth arc guide groove and achieves relative movement between the second support rod and the second rotating member by sliding in the fourth arc guide groove.

[0012] Specifically, when configuring the first rotating member, a third arc arm is provided on the side of the first rotating member facing the base, a fifth arc guide groove is provided on the side of the base facing the first rotating member, the third arc arm is accommodated in the fifth arc guide groove, and the first rotating member and the base are rotationally connected by sliding in the fifth arc guide groove. Similarly, a fourth arc arm is provided on the side of the second rotating member facing the base, a sixth arc guide groove is provided on the side of the base facing the second rotating member, the fourth arc arm is accommodated in the sixth arc guide groove, and the second rotating member and the base are rotationally connected by sliding in the sixth arc guide groove.

[0013] In one possible implementation, the third arc arm has a first notch, and the fourth arc arm has a second notch. The first rotating member has a first end rotatably connected to the first link member, and the first end is located in the second notch. The second rotating member has a second end rotatably connected to the third link member, and the second end is located in the first notch. This allows the first and second rotating members to be staggered, further reducing the overall size of the half-axle module.

[0014] In one possible implementation, the first rotating member is rotatably connected to the first link member via a first pin, the first link member is rotatably connected to the second link member via a second pin, and the second link member is rotatably connected to the first sliding member via a third pin. The second rotating member is rotatably connected to the third link member via a fourth pin, the third link member is rotatably connected to the fourth link member via a fifth pin, and the fourth link member is rotatably connected to the second sliding member via a sixth pin. A first limiting groove is provided on the side wall of the first notch near the second end, and the first limiting groove extends in a direction away from the base. The fourth pin, the fifth pin, and the sixth pin are at least partially accommodated in the first limiting groove and slide along the first limiting groove. A second limiting groove is provided on the side wall of the second notch near the first end, and the second limiting groove extends in a direction away from the base. The first pin, the second pin, and the third pin are at least partially accommodated in the second limiting groove and slide along the second limiting groove.

[0015] When specifically setting the positions of the first link component and the second link component, a first slide groove is provided on the side of the first mounting plate away from the flexible display screen, the first rotating member is at least partially accommodated in the first slide groove, and the first rotating member is slidably connected to the first mounting plate by sliding in the first slide groove. A second slide groove is provided on the side of the first rotating member facing the first mounting plate, the second sliding member is accommodated in the second slide groove and is fixedly connected to the first mounting plate. A third slide groove is provided on the side of the second mounting plate away from the flexible display screen, the second rotating member is at least partially accommodated in the third slide groove, and the second rotating member is slidably connected to the second mounting plate by sliding in the third slide groove. A fourth slide groove is provided on the side of the second rotating member facing the second mounting plate, the first sliding member is accommodated in the fourth slide groove and is fixedly connected to the second mounting plate.

[0016] In one possible implementation, the hinge mechanism further includes a first door panel and a second door panel, wherein the first door panel is fixedly connected to a side of the first rotating member away from the flexible display screen, and the second door panel is fixedly connected to a side of the second rotating member away from the flexible display screen. The first door panel and the second door panel are configured to shield the first link assembly and the second link assembly when the hinge mechanism is in a flattened state.

[0017] In a possible implementation, the rotating shaft mechanism may further include a third door panel, which is fixedly connected to the base and located between the first door panel and the second door panel.

[0018] In a second aspect, the present application provides an electronic device. The electronic device includes a flexible display, a first housing, a second housing, and the hinge mechanism of the first aspect, wherein the first housing is fixedly connected to the first mounting plate, the second housing is fixedly connected to the second mounting plate, and the flexible display continuously covers the first housing, the second housing, and the hinge mechanism, and is fixedly connected to the first housing and the second housing, respectively. The hinge mechanism of the electronic device uses a chain assembly as the main rotation, has a simple structure, and during the folding and unfolding process, the first support rod and the second support rod can provide better support for the flexible display, avoiding pulling or squeezing of the flexible display.

[0019] In one possible implementation, a first support sheet is provided on the side of the flexible display facing the first housing, and a side of the first support sheet facing away from the base is fixedly connected to the flexible display. A second support sheet is provided on the side of the flexible display facing the second housing, and a side of the second support sheet facing away from the base is fixedly connected to the flexible display. The first and second support sheets can provide support for the flexible display during folding or unfolding of the electronic device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] FIG1 is a schematic diagram of an electronic device provided in an embodiment of the present application;

[0021] FIG2 is a schematic diagram of an electronic device provided by an embodiment of the present application in a flattened state;

[0022] FIG3 is an exploded view of the electronic device in FIG2 ;

[0023] FIG4 is a schematic diagram of an electronic device in a folded state provided by an embodiment of the present application;

[0024] FIG5 is an exploded view of the electronic device in FIG4 ;

[0025] FIG6 is a schematic diagram of a rotating shaft mechanism provided in an embodiment of the present application;

[0026] FIG7 is another structural schematic diagram of the rotating shaft mechanism provided in an embodiment of the present application;

[0027] FIG8 is an exploded schematic diagram of a rotating shaft mechanism provided in an embodiment of the present application;

[0028] FIG9 is a schematic diagram of a half-shaft module provided in an embodiment of the present application;

[0029] FIG10 is an exploded schematic diagram of a half-shaft module provided in an embodiment of the present application;

[0030] FIG11 is a schematic diagram of a first link component provided in an embodiment of the present application;

[0031] FIG12 is an exploded schematic diagram of the first link assembly in FIG11 ;

[0032] FIG13 is a schematic diagram of a second link component provided in an embodiment of the present application;

[0033] FIG14 is an exploded schematic diagram of the second link assembly in FIG13;

[0034] FIG15 is a schematic diagram of a first mounting plate and a second mounting plate provided in an embodiment of the present application;

[0035] FIG16 is a schematic diagram of a first rotating member provided in an embodiment of the present application;

[0036] FIG17 is another schematic diagram of the first rotating member provided in an embodiment of the present application;

[0037] FIG18 is a schematic diagram of the cooperation between the first link component and the second link component in a flattened state provided by an embodiment of the present application;

[0038] FIG19 is another schematic diagram of the cooperation between the first link assembly and the second link assembly in a flattened state according to an embodiment of the present application;

[0039] FIG20 is a schematic diagram showing the cooperation of the first link assembly and the second link assembly in a semi-folded state according to an embodiment of the present application;

[0040] FIG21 is a schematic diagram of the cooperation between the first link assembly, the second link assembly and the base provided in an embodiment of the present application;

[0041] FIG22 is another schematic diagram of the cooperation between the first link assembly, the second link assembly, and the base provided in an embodiment of the present application;

[0042] FIG23 is a schematic diagram of a second rotating member provided in an embodiment of the present application;

[0043] FIG24 is another schematic diagram of a second rotating member provided in an embodiment of the present application;

[0044] FIG25 is a partial schematic diagram of a base provided in an embodiment of the present application;

[0045] FIG26 is a schematic diagram of the cooperation between the first rotating member, the second rotating member and the base provided in an embodiment of the present application;

[0046] FIG27 is a schematic diagram of the fourth pin, the fifth pin, and the sixth pin in cooperation with the first limiting groove and the second sliding groove according to an embodiment of the present application;

[0047] FIG28 is another schematic diagram of the fourth pin, the fifth pin, and the sixth pin cooperating with the first limiting groove and the second sliding groove according to an embodiment of the present application;

[0048] FIG29 is another schematic diagram of the fourth pin, the fifth pin, and the sixth pin cooperating with the first limiting groove and the second sliding groove according to an embodiment of the present application;

[0049] FIG30( a ), FIG30 ( b ), and FIG30 ( c ) are schematic diagrams showing the movement of the first link assembly from a flattened state to a folded state according to an embodiment of the present application;

[0050] FIG31( a ), FIG31( b ), and FIG31( c ) are schematic diagrams showing the movement of the second link assembly from a flattened state to a folded state according to an embodiment of the present application;

[0051] FIG32 is a schematic diagram of a half-shaft module in an expanded state provided by an embodiment of the present application;

[0052] FIG33 is a schematic diagram of a half-axle module in a folded state provided by an embodiment of the present application;

[0053] FIG34 is a schematic diagram of a first support rod provided in an embodiment of the present application;

[0054] FIG35 is a schematic diagram of a rotating shaft mechanism provided in an embodiment of the present application in a flattened state;

[0055] FIG36 is a schematic diagram of a rotating shaft mechanism provided in an embodiment of the present application in a folded state;

[0056] FIG37 is a schematic diagram of a second support rod provided in an embodiment of the present application;

[0057] FIG38 is another schematic diagram of the rotating shaft mechanism provided by an embodiment of the present application in a flattened state;

[0058] FIG39 is another schematic diagram of the rotating shaft mechanism provided by an embodiment of the present application in a folded state;

[0059] FIG40 is a schematic diagram of a synchronization component provided in an embodiment of the present application;

[0060] FIG41 is a schematic diagram of a first gear slider and a second gear slider provided in an embodiment of the present application;

[0061] FIG42 is a schematic diagram of the cooperation between the first damping assembly and the first mounting plate provided in an embodiment of the present application;

[0062] FIG43 is a schematic diagram of a first damping assembly provided in an embodiment of the present application;

[0063] FIG44 is a schematic diagram of the cooperation between the first damping assembly and the first mounting plate in a flattened state according to an embodiment of the present application;

[0064] FIG45 is a schematic diagram illustrating the cooperation between the first damping assembly and the first mounting plate in a semi-folded state according to an embodiment of the present application;

[0065] FIG46 is a schematic diagram illustrating the cooperation between the first damping assembly and the first mounting plate in a folded state according to an embodiment of the present application;

[0066] FIG47 is another schematic diagram of the half-shaft module provided by an embodiment of the present application in a flattened state;

[0067] FIG48 is a schematic diagram of a half-shaft module in a semi-folded state provided by an embodiment of the present application;

[0068] Figure 49 is another schematic diagram of the half-axle module provided in an embodiment of the present application in a folded state.

[0069] Reference numerals:

[0070] 10-Electronic device 11-Hinge mechanism 12-Flexible display

[0071] 13-first shell 14-second shell 111-base

[0072] 112- half shaft module 113- first support rod 114- second support rod

[0073] 115-first door panel 116-second door panel 111a-main outer shaft

[0074] 111b - main inner shaft 1111 - first arc guide groove 1112 - third arc guide groove

[0075] 1113-fifth arc-shaped guide groove 1114-sixth arc-shaped guide groove 1121-first link assembly

[0076] 1122 - second link assembly 1123 - synchronization assembly 1124 - first damping assembly

[0077] 1125-second damping assembly 1131-first arc arm 1132-first pin

[0078] 1141-second arc arm 1142-second pin 11211-first mounting plate

[0079] 11212-first rotating member 11213-first link member 11214-second link member

[0080] 11215-first sliding member 11216-first pin 11217-second pin

[0081] 11218-third pin 11221-second mounting plate 11222-second rotating member

[0082] 11223-third link 11224-fourth link 11225-second sliding member

[0083] 11226-Fourth pin 11227-Fifth pin 11228-Sixth pin

[0084] 11231-first rotating shaft 11232-second rotating shaft 11233-first gear slider

[0085] 11234-Second gear slider 11241-First bracket 11242-First spring

[0086] 112111-Second arc guide groove 112112-First slide groove 112113-First frame

[0087] 112121-third arc arm 112122-first notch 112123-first limiting groove

[0088] 112124-second slide groove 112125-second protrusion 11212a-first end

[0089] 112211- fourth arc-shaped guide groove 112212- third slide groove 11222a- second end

[0090] 112221- fourth arc arm 112222- second notch 112223- second limiting groove

[0091] 112224-fourth sliding groove 112331-first slider body 112332-first tooth portion

[0092] 112341-second slider body 112342-second tooth portion 112411-first protrusion DETAILED DESCRIPTION

[0093] In order to make the purpose, technical solutions and advantages of this application clearer, this application will be further described in detail below with reference to the accompanying drawings.

[0094] It should be noted that the terms used in the following embodiments are only for the purpose of describing specific embodiments and are not intended to limit the present application. As used in the specification and claims of this application, the singular expressions "a," "an," "said," "above," "the," and "this" are intended to include expressions such as "one or more," unless the context clearly indicates otherwise.

[0095] References to "one embodiment" or "some embodiments" in this specification mean that a particular feature, structure, or characteristic described in conjunction with that embodiment is included in one or more embodiments of the present application. Thus, phrases such as "in one embodiment," "in some embodiments," "in other embodiments," and "in yet other embodiments" appearing in various places in this specification do not necessarily refer to the same embodiment, but rather mean "one or more but not all embodiments," unless otherwise specifically emphasized. The terms "including," "comprising," "having," and variations thereof mean "including but not limited to," unless otherwise specifically emphasized.

[0096] To facilitate understanding of the hinge mechanism provided in the embodiments of the present application, its application scenarios are described below. The hinge mechanism can be applied to, but is not limited to, foldable electronic devices such as mobile phones, smart wearable devices, tablet computers, or laptop computers. When applying the hinge mechanism provided in the embodiments of the present application to electronic devices, reference can be made to FIG1 , which is a schematic diagram of the electronic device provided in the embodiments of the present application. The electronic device 10 provided in the present application is an outward-folding electronic device. As shown in FIG1 , in addition to the hinge mechanism 11, the electronic device 10 may also include a flexible display 12, a first shell 13, and a second shell 14. The flexible display 12 continuously covers the hinge mechanism 11, the first shell 13, and the second shell 14, and the first shell 13 and the second shell 14 are respectively fixedly connected to the flexible display 12. FIG2 is a schematic diagram of the electronic device provided in the embodiments of the present application in a flattened state, FIG3 is an exploded view of the electronic device in FIG2 , FIG4 is a schematic diagram of the electronic device provided in the embodiments of the present application in a folded state, and FIG5 is an exploded view of the electronic device in FIG4 . As shown in FIG2 , FIG3 , FIG4 , and FIG5 , specifically, the first shell 13 and the second shell 14 are arranged on either side of the hinge mechanism 11 and can rotate about the hinge mechanism 11. When using the electronic device 10, it can be folded or unfolded according to different usage scenarios. As shown in Figures 2 and 3, when the electronic device 10 is in the flattened state, the flexible display 12 is located on the same side of the hinge mechanism 11, the first housing 13, and the second housing 14. In this case, the outer surface of the first housing 13 facing away from the flexible display 12, the outer surface of the hinge mechanism 11 facing away from the flexible display 12, and the outer surface of the second housing 14 facing away from the flexible display 12 can collectively serve as the exterior surface of the electronic device 10. As shown in Figures 4 and 5, when the electronic device 10 is in the folded state, the first housing 13 and the second housing 14 are positioned opposite each other, and the flexible display 12 serves as both the display surface and the exterior surface of the electronic device 10. It will be understood that the process of the electronic device 10 moving from the flattened state to the folded state, or vice versa, is the process of the first housing 13 and the second housing 14 rotating about the hinge mechanism 11. During this process, the flexible display 12 bends or flattens along with the first housing 13 and the second housing 14.

[0097] In some current foldable electronic devices, the hinge mechanism is relatively complex in structure, has high manufacturing costs, and has poor support performance for flexible displays. Therefore, this application provides a hinge mechanism and electronic device to simplify the hinge mechanism structure and improve the support performance for flexible displays.

[0098] It should be noted that the terms used in the following embodiments are only for the purpose of describing specific embodiments and are not intended to limit the present application. As used in the specification and claims of this application, the singular expressions "a," "an," "said," "above," "the," and "this" are intended to include expressions such as "one or more," unless the context clearly indicates otherwise.

[0099] References to "one embodiment" or "some embodiments" in this specification mean that a particular feature, structure, or characteristic described in conjunction with that embodiment is included in one or more embodiments of the present application. Thus, phrases such as "in one embodiment," "in some embodiments," "in other embodiments," and "in yet other embodiments" appearing in various places in this specification do not necessarily refer to the same embodiment, but rather mean "one or more but not all embodiments," unless otherwise specifically emphasized. The terms "including," "comprising," "having," and variations thereof mean "including but not limited to," unless otherwise specifically emphasized.

[0100] Figure 6 is a schematic diagram of the rotating shaft mechanism provided in an embodiment of the present application, Figure 7 is another structural schematic diagram of the rotating shaft mechanism provided in an embodiment of the present application, and Figure 8 is an exploded schematic diagram of the rotating shaft mechanism provided in an embodiment of the present application. As shown in Figures 6, 7 and 8, the rotating shaft mechanism 11 includes a base 111 and at least one half-shaft module 112. In one embodiment, the rotating shaft mechanism 11 may include one half-shaft module 112. In another embodiment, the rotating shaft mechanism 11 may include two half-shaft modules 112. The two half-shaft modules 112 are relatively arranged at both ends of the base 111.

[0101] FIG9 is a schematic diagram of a half-axle module provided in an embodiment of the present application, and FIG10 is an exploded schematic diagram of a half-axle module provided in an embodiment of the present application. As shown in FIG9 and FIG10, the half-axle module 112 includes a first link component 1121 and a second link component 1122. The first link component 1121 and the second link component 1122 are respectively connected to the base 111. In addition, the half-axle module 112 may also include a synchronization component 1123, a first damping component 1124 and a second damping component 1125. The synchronization component 1123 is used to synchronize the rotation of the first link component 1121 and the second link component 1122, and the first damping component 1124 and the second damping component 1125 provide torsional force during the rotation of the rotating shaft mechanism 11, so as to ensure stable rotation of the rotating shaft mechanism 11. In one embodiment, the base 111 may specifically include a main outer shaft 111a and a main inner shaft 111b. The main outer shaft 111a is located on the side of the main inner shaft 111b facing the flexible display screen 12, and the main outer shaft 111a is fixedly connected to the main inner shaft 111b. Specifically, the main outer shaft 111a and the main inner shaft 111b can be connected by bonding, threading, or welding, and this application does not impose any specific restrictions.

[0102] Figure 11 is a schematic diagram of a first link assembly provided in an embodiment of the present application, and Figure 12 is an exploded view of the first link assembly in Figure 11. As shown in Figures 11 and 12, the first link assembly 1121 includes a first mounting plate 11211, a first rotating member 11212, a first link member 11213, a second link member 11214, and a first sliding member 11215. The first mounting plate 11211 and the first rotating member 11212 are disposed on one side of the base 111, with the first rotating member 11212 located on the side of the first mounting plate 11211 away from the flexible display 12. The first rotating member 11212 is slidably coupled to the first mounting plate 11211 and is rotatably coupled to the base 111. The first link member 11213 is rotatably coupled to the side of the first rotating member 11212 facing the base 111. The second link member 11214 is rotatably coupled to the side of the first link member 11213 away from the first rotating member 11212. The first sliding member 11215 is rotatably connected to a side of the second linking member 11214 away from the first linking member 11213. Specifically, the first rotating member 11212 is rotatably connected to the first linking member 11213 via a first pin 11216, the first linking member 11213 is rotatably connected to the second linking member 11214 via a second pin 11217, and the second linking member 11214 is rotatably connected to the first sliding member 11215 via a third pin 11218.

[0103] Figure 13 is a schematic diagram of a second link assembly provided in an embodiment of the present application, and Figure 14 is an exploded view of the second link assembly in Figure 13 . As shown in Figures 13 and 14 , the second link assembly 1122 includes a second mounting plate 11221, a second rotating member 11222, a third link member 11223, a fourth link member 11224, and a second sliding member 11225. The second mounting plate 11221 and the second rotating member 11222 are disposed on a side of the base 111 away from the first mounting plate 11211, with the second rotating member 11222 located on a side of the second mounting plate 11221 away from the flexible display 12. The second rotating member 11222 is slidably coupled to the second mounting plate 11221 and is rotationally coupled to the base 111. The third link member 11223 is rotationally coupled to the side of the second rotating member 11222 facing the base 111. The fourth link 11224 is rotatably connected to a side of the third link 11223 that is away from the second rotating member 11222. The second sliding member 11225 is rotatably connected to a side of the fourth link 11224 that is away from the third link 11223. The second sliding member 11225 is fixedly connected to the first mounting plate 11211, and the first sliding member 11215 is fixedly connected to the second mounting plate 11221. Specifically, the second rotating member 11222 is rotatably connected to the third link 11223 via a fourth pin 11226, the third link 11223 is rotatably connected to the fourth link 11224 via a fifth pin 11227, and the fourth link 11224 is rotatably connected to the second sliding member 11225 via a sixth pin 11228.

[0104] FIG15 is a schematic diagram of a first mounting plate and a second mounting plate according to an embodiment of the present application. As shown in FIG15 , a first groove 112112 is provided on the side of the first mounting plate 11211 away from the flexible display screen 12. A first rotating member 11212 is at least partially receivable within the first groove 112112, and the sliding movement of the first rotating member 11212 within the first groove 112112 establishes a sliding connection between the first rotating member 11212 and the first mounting plate 11211. A third groove 112212 is provided on the side of the second mounting plate 11221 away from the flexible display screen 12. A second rotating member 11222 is at least partially receivable within the third groove 112212, and the sliding movement of the second rotating member 11222 within the third groove 112212 establishes a sliding connection between the second rotating member 11222 and the second mounting plate 11221.

[0105] Figure 16 is a schematic diagram of the first rotating member provided in an embodiment of the present application, and Figure 17 is another schematic diagram of the first rotating member provided in an embodiment of the present application. As shown in Figures 16 and 17, the first rotating member 11212 is provided with a third arc arm 112121 on the side facing the base 111. The first rotating member 11212 is provided with a second slide groove 112124 on the side facing the first mounting plate 11211. Figure 18 is a schematic diagram of the first link assembly and the second link assembly in a flattened state provided in an embodiment of the present application. Figure 19 is another schematic diagram of the first link assembly and the second link assembly in a flattened state provided in an embodiment of the present application. Figure 20 is a schematic diagram of the first link assembly and the second link assembly in a semi-folded state provided in an embodiment of the present application. As shown in Figures 18, 19, and 20, the second sliding member 11225 is accommodated in the second slide groove 112124 and is fixedly connected to the first mounting plate 11211.

[0106] Figure 21 is a schematic diagram illustrating the cooperation of the first link assembly, the second link assembly, and the base according to an embodiment of the present application, and Figure 22 is another schematic diagram illustrating the cooperation of the first link assembly, the second link assembly, and the base according to an embodiment of the present application, wherein Figure 22 shows a cross-sectional view of the first link assembly along the AA direction in Figure 21. As shown in Figures 21 and 22, the second sliding member 11225 is located between the first mounting plate 11211 and the first rotating member 11212 and can be located simultaneously in the first sliding groove 112112 and the second sliding groove 112124.

[0107] FIG23 is a schematic diagram of a second rotating member provided in an embodiment of the present application, and FIG24 is another schematic diagram of a second rotating member provided in an embodiment of the present application. As shown in FIG23 and FIG24 , a fourth arc arm 112221 is provided on the side of the second rotating member 11222 facing the base 111. A fourth slide groove 112224 is provided on the side of the second rotating member 11222 facing the second mounting plate 11221. The first sliding member 11215 is accommodated in the fourth slide groove 112224 and is fixedly connected to the second mounting plate 11221. In other words, the first sliding member 11215 can be located in both the third slide groove 112212 and the fourth slide groove 112224 at the same time. The first sliding member 11215 is located between the second mounting plate 11221 and the second rotating member 11222.

[0108] Figure 25 is a partial schematic diagram of a base provided in an embodiment of the present application, and Figure 26 is a schematic diagram of the cooperation between the first and second rotating members and the base provided in an embodiment of the present application. As shown in Figures 25 and 26, a fifth arcuate guide groove 1113 is provided on the side of the base 111 facing the first rotating member 11212. A third arcuate arm 112121 is received in the fifth arcuate guide groove 1113, and the first rotating member 11212 is rotatably connected to the base 111 by sliding the third arcuate arm 112121 in the fifth arcuate guide groove 1113. A sixth arcuate guide groove 1114 is provided on the side of the base 111 facing the second rotating member 11222. A fourth arcuate arm 112221 is received in the sixth arcuate guide groove 1114, and the second rotating member 11222 is rotatably connected to the base 111 by sliding the fourth arcuate arm 112221 in the sixth arcuate guide groove 1114.

[0109] As shown in Figures 16 and 17 , the third arcuate arm 112121 has a first notch 112122, and the first rotating member 11212 has a first end 11212a rotatably connected to the first link 11213. As shown in Figures 20 and 21 , the fourth arcuate arm 112221 has a second notch 112222, and the second rotating member 11222 has a second end 11222a rotatably connected to the third link 11223. The first end 11212a is located within the second notch 112222, and the second end 11222a is located within the first notch 112122. A first limiting groove 112123 is provided on the sidewall of the first notch 112122 near the second end. The first limiting groove 112123 extends away from the base 111 and communicates with the second sliding groove 112124. A second limiting groove 112223 is provided on the side wall of the second notch 112222 near the first end 11212a. The second limiting groove 112223 extends in a direction away from the base 111 and communicates with the fourth slide 112224. Figure 27 is a schematic diagram of the fourth, fifth, and sixth pins according to an embodiment of the present application cooperating with the first limiting groove and the second slide. Figure 28 is another schematic diagram of the fourth, fifth, and sixth pins according to an embodiment of the present application cooperating with the first limiting groove and the second slide. Figure 29 is another schematic diagram of the fourth, fifth, and sixth pins according to an embodiment of the present application cooperating with the first limiting groove and the second slide. Figure 27 shows the electronic device in a flattened state, Figure 28 shows the electronic device in a semi-folded state, and Figure 29 shows the electronic device in a folded state. As shown in Figures 27, 28, and 29, the fourth pin 11226, the fifth pin 11227, and the sixth pin 11228 are at least partially received in the first limiting groove 112123 and slide along the first limiting groove 112123. Specifically, in the flattened state, the fourth pin 11226 can be located in the first limiting groove 112123, and the fifth pin 11227 and the sixth pin 11228 are located in the second sliding groove 112124. During the folding process, the fourth pin 11226 gradually disengages from the first limiting groove 112123, while the fifth pin 11227 and the sixth pin 11228 move toward the first limiting groove 112123. Similarly, the first pin shaft 11216 , the second pin shaft 11217 and the third pin shaft 11218 are at least partially accommodated in the second limiting groove 112223 and slide along the second limiting groove 112223 , which will not be described in detail here.

[0110] Figures 30(a), 30(b), and 30(c) are schematic diagrams illustrating the movement of the first link assembly from a flattened state to a folded state according to an embodiment of the present application. The cross-sections shown in Figures 30(a), 30(b), and 30(c) are schematic cross-sections taken along the BB direction of Figure 7. Figure 30(a) illustrates the flattened state, Figure 30(b) illustrates a semi-folded state between the flattened and folded states, and Figure 30(c) illustrates the folded state. As shown in Figures 30(a), 30(b), and 30(c), when the first mounting plate 11211 and the second mounting plate 11221 are folded or unfolded relative to each other, the first rotating member 11212 rotates about the base 111 and slides relative to the first mounting plate 11211. When the first mounting plate 11211 and the second mounting plate 11221 transform from the flattened state to the folded state, the first rotating member 11212 rotates about the base 111 in a direction toward the second mounting plate 11221 (counterclockwise in Figures 30(a), 30(b), and 30(c)). During this process, the first rotating member 11212 drives the first link 11213, the second link 11214, and the first sliding member 11215 to move toward the first mounting plate 11211. Because the first sliding member 11215 is fixedly connected to the second mounting plate 11221, the second mounting plate 11221 follows the first sliding member 11215 in its movement toward the base 111. When the first mounting plate 11211 and the second mounting plate 11221 transform from a folded state to a flattened state, the first rotating member 11212 rotates about the base 111 in a direction away from the second mounting plate 11221 (clockwise in Figures 30(a), 30(b), and 30(c)). During this process, the first rotating member 11212 drives the first link 11213, the second link 11214, and the first sliding member 11215 to move away from the first mounting plate 11211. Because the first sliding member 11215 is fixedly connected to the second mounting plate 11221, the second mounting plate 11221 follows the first sliding member 11215 in moving away from the base 111. Figures 31(a), 31(b), and 31(c) are schematic diagrams illustrating the movement of the second link assembly from a flattened state to a folded state according to an embodiment of the present application. The cross-sections shown in Figures 31(a), 31(b), and 31(c) are schematic cross-sections taken along the CC direction of Figure 7 . Figure 31(a) illustrates the flattened state, Figure 31(b) illustrates a semi-folded state between the flattened and folded states, and Figure 31(c) illustrates the folded state. As shown in Figures 31(a), 31(b), and 31(c), when the first mounting plate 11211 and the second mounting plate 11221 are folded or unfolded relative to each other, the second rotating member 11222 rotates about the base 111 and slides relative to the second mounting plate 11221.When the first mounting plate 11211 and the second mounting plate 11221 transform from the flattened state to the folded state, the second rotating member 11222 rotates about the base 111 in a direction toward the first mounting plate 11211 (clockwise in Figures 31(a), 31(b), and 31(c)). During this process, the second rotating member 11222 drives the third link 11223, the fourth link 11224, and the second sliding member 11225 to move toward the second mounting plate 11221. Because the second sliding member 11225 is fixedly connected to the first mounting plate 11211, the first mounting plate 11211 follows the second sliding member 11225 in its movement toward the base 111. When the first mounting plate 11211 and the second mounting plate 11221 transform from a folded state to a flattened state, the second rotating member 11222 rotates about the base 111 in a direction away from the first mounting plate 11211 (counterclockwise in Figures 31(a), 31(b), and 31(c)). During this process, the second rotating member 11222 drives the third link 11223, the fourth link 11224, and the second sliding member 11225 to move away from the second mounting plate 11221. Because the second sliding member 11225 is fixedly connected to the first mounting plate 11211, the first mounting plate 11211 follows the second sliding member 11225 in a direction away from the base 111. Therefore, the first link assembly 1121 and the second link assembly 1122 can achieve flattening and folding of the hinge mechanism 11. This structure is simple and has low manufacturing costs.

[0111] As shown in Figure 8, the hinge mechanism 11 also includes a first support rod 113 and a second support rod 114. The first support rod 113 is located between the first mounting plate 11211 and the base 111, and is arranged close to the flexible display screen 12. The first support rod 113 is rotatably connected to the half-axis module 112 and the base 111 respectively. The second support rod 114 is located between the second mounting plate 11221 and the base 111, and is arranged close to the flexible display screen 12. The second support rod 114 is rotatably connected to the half-axis module 112 and the base 111 respectively. The first support rod 113 has a first support surface S1 on the side facing the flexible display screen 12, the second support rod 114 has a second support surface S2 on the side facing the flexible display screen 12, and the base 111 has a third support surface S3 on the side facing the flexible display screen 12. Figure 32 is a schematic diagram of the half-axis module provided in an embodiment of the present application in an unfolded state. As shown in Figure 32, when the hinge mechanism 11 is in a flattened state, the first support surface S1, the second support surface S2, and the third support surface S3 form a flat support surface for supporting the flexible display screen 12. Figure 33 is a schematic diagram of the half-axis module provided in an embodiment of the present application in a folded state. As shown in Figure 33, when the hinge mechanism 11 is in a folded state, the first support surface, the second support surface, and the third support surface form a U-shaped support surface for supporting the flexible display screen 12. It should be noted that the third support surface S3 refers to the appearance surface of the base 111. For example, in one embodiment, the appearance surface of the main outer shaft 111a facing the flexible display screen 12 can be the third support surface S3.

[0112] FIG34 is a schematic diagram of the first support rod provided in an embodiment of the present application. As shown in FIG34 , the side of the first support rod 113 facing away from the base 111 can be connected to the first mounting plate 11211. Specifically, a first curved arm 1131 is provided on the side of the first support rod 113 facing the base 111, and a first pin 1132 is provided on the side of the first support rod 113 facing the first mounting plate 11211. FIG35 is a schematic diagram of the rotating shaft mechanism provided in an embodiment of the present application in a flattened state, and FIG36 is a schematic diagram of the rotating shaft mechanism provided in an embodiment of the present application in a folded state. As shown in FIG35 and FIG36 , a first curved guide groove 1111 is provided on the side of the base 111 facing the first support rod 113. The first curved arm 1131 is accommodated in the first curved guide groove 1111, and the first curved arm 1131 slides within the first curved guide groove 1111 to achieve the rotational connection between the first support rod 113 and the base 111. A second arc-shaped guide groove 112111 is provided on the side of the first mounting plate 11211 facing the first support rod 113, and the first pin 1132 is accommodated in the second arc-shaped guide groove 112111, and the relative movement between the first support rod 113 and the first mounting plate 11211 is realized by sliding the first pin 1132 in the second arc-shaped guide groove 112111.

[0113] Figure 37 is a schematic diagram of a second support rod provided in an embodiment of the present application. As shown in Figure 37, the side of the second support rod 114 facing away from the base 111 can be connected to the second mounting plate 11221. Specifically, a second curved arm 1141 is provided on the side of the second support rod 114 facing the base 111, and a second pin 1142 is provided on the side of the second support rod 114 facing the second mounting plate 11221. Figure 38 is another schematic diagram of the hinge mechanism provided in an embodiment of the present application in a flattened state, and Figure 39 is another schematic diagram of the hinge mechanism provided in an embodiment of the present application in a folded state. As shown in Figures 38 and 39, a third curved guide groove 1112 is provided on the side of the base 111 facing the second support rod 114. The second curved arm 1141 is accommodated in the third curved guide groove 1112, and the second curved arm 1141 slides within the third curved guide groove 1112 to achieve the rotational connection between the second support rod 114 and the base 111. A fourth arc-shaped guide groove 112211 is provided on the side of the second mounting plate 11221 facing the second support rod 114, and the second pin 1142 is accommodated in the fourth arc-shaped guide groove 112211, and the relative movement between the second support rod 114 and the second mounting plate 11221 is realized by sliding the second pin 1142 in the fourth arc-shaped guide groove 112211.

[0114] In another embodiment, the side of the first support rod 113 away from the base 111 can be connected to the first rotating member 11212. The second arcuate guide groove 112111 can be provided on the side of the first rotating member 11212 facing the first support rod 113. The first pin 1132 is accommodated in the second arcuate guide groove 112111, and the relative movement between the first support rod 113 and the first rotating member 11212 is achieved by the sliding of the first pin 1132 in the second arcuate guide groove 112111. Similarly, the side of the second support rod 114 away from the base 111 can be connected to the second rotating member 11222. The fourth arc-shaped guide groove 112211 can be set on the side of the second rotating member 11222 facing the second support rod 114, the second pin 1142 is accommodated in the fourth arc-shaped guide groove 112211, and the relative movement between the second support rod 114 and the second rotating member 11222 is realized by sliding the second pin 1142 in the fourth arc-shaped guide groove 112211.

[0115] In another embodiment of the present application, the first support rod 113 and the second support rod 114 can be omitted. In this embodiment, a first support sheet is provided on the side of the flexible display 12 facing the first housing 13, and the side of the first support sheet facing away from the base 111 is fixedly connected to the flexible display 12. A second support sheet is provided on the side of the flexible display 12 facing the second housing 14, and the side of the second support sheet facing away from the base 111 is fixedly connected to the flexible display 12. The first support sheet and the second support sheet are used together to support the flexible display 12.

[0116] Figure 40 is a schematic diagram of a synchronization assembly provided in an embodiment of the present application, and Figure 41 is a schematic diagram of a first gear slider and a second gear slider provided in an embodiment of the present application. As shown in Figures 40 and 41, the synchronization assembly 1123 includes a first rotating shaft 11231, a second rotating shaft 11232, a first gear slider 11233, and a second gear slider 11234. Specifically, the first rotating shaft 11231 and the second rotating shaft 11232 are arranged parallel to the base 111. The first rotating shaft 11231 is arranged near the first mounting plate 11211. The first gear slider 11233 includes a first slider body 112331 and a first tooth portion 112332. The first tooth portion 112332 is sleeved on the circumference of the first rotating shaft 11231, and the first tooth portion 112332 and the first rotating shaft 11231 are rotatably connected. The first slider body 112331 is located on the side of the first tooth portion 112332 away from the base 111, and is slidably connected to the first mounting plate 11211. Similarly, the second gear slider 11234 includes a second slider body 112341 and a second tooth portion 112342. The second tooth portion 112342 is sleeved around the circumference of the second rotating shaft 11232 and is rotationally connected to the second rotating shaft 11232. The first tooth portion 112332 and the second tooth portion 112342 are engaged. The second slider body 112341 is located on the side of the second tooth portion 112342 away from the base 111, and is slidably connected to the second mounting plate 11221. When the first and second mounting plates 11221 are folded or unfolded relative to each other, the first slider body 112331 slides relative to the first mounting plate 11211, and the second slider body 112341 slides relative to the second mounting plate 11221. Because the first and second teeth 112332 and 112342 engage, the first and second teeth 112332 and 112342 rotate synchronously. In other words, the first and second teeth 112332 and 112342 rotate at the same angle and speed, resulting in the first slider body 112331 sliding equal to the second slider body 112341 sliding equal to the first mounting plate 11211. Consequently, the first and second mounting plates 11211 and 11221 rotate synchronously relative to the base 111.

[0117] In an embodiment of the present application, the first damping assembly 1124 and the second damping assembly 1125 are used to provide torsional force to the first link assembly 1121 and the second link assembly 1122 to stabilize the rotation of the rotating shaft mechanism 11. The first damping assembly 1124 is arranged on the first mounting plate 11211, and the second damping assembly 1125 is arranged on the second mounting plate 11221. The structure of the first damping assembly 1124 is similar to that of the second damping assembly 1125. Figure 42 is a schematic diagram of the cooperation between the first damping assembly and the first mounting plate provided in an embodiment of the present application, and Figure 43 is a schematic diagram of the first damping assembly provided in an embodiment of the present application. As shown in Figures 42 and 43, taking the first damping assembly 1124 as an example, the first damping assembly 1124 includes a first bracket 11241 and a first spring 11242. The first mounting plate 11211 is provided with a first frame 112113. The first frame 112113 and the first bracket 11241 can be enclosed to form an accommodating space, and the first spring 11242 is disposed within the accommodating space. Furthermore, the first frame 112113 is slidably connected to the first bracket 11241. The first bracket 11241 has a first protrusion 112411. As shown in FIG17 , the first rotating member 11212 has a second protrusion 112125. The first protrusion 112411 can abut against the second protrusion 112125. FIG44 is a schematic diagram of the first damping assembly and the first mounting plate provided in an embodiment of the present application in a flattened state. As shown in FIG44 , in the flattened state, the first protrusion 112411 abuts against the second protrusion 112125, and there is no interaction force between the first protrusion 112411 and the second protrusion 112125. FIG45 is a schematic diagram of the first damping assembly and the first mounting plate provided in an embodiment of the present application in a semi-folded state. As shown in Figure 45, during the folding process, the second protrusion 112125 slides along with the first rotating member 11212 in a direction away from the base 111, and simultaneously pushes the first protrusion 112411, thereby causing the first bracket 11241 to move relative to the first frame 112113, thereby compressing the first spring 11242, thereby achieving the damping effect of the first damping assembly 1124. Figure 46 is a schematic diagram of the first damping assembly and the first mounting plate provided in the folded state according to an embodiment of the present application. As shown in Figure 46, after further folding, the second protrusion 112125 separates from the first protrusion 112411, and the first protrusion 112411 returns to its original position (i.e., the position in the flattened state) under the elastic force of the first spring 11242 until it reaches the folded state.

[0118] FIG47 is another schematic diagram of the half-axle module provided in an embodiment of the present application in a flattened state, FIG48 is another schematic diagram of the half-axle module provided in an embodiment of the present application in a semi-folded state, and FIG49 is another schematic diagram of the half-axle module provided in an embodiment of the present application in a folded state. As shown in FIG47, FIG48, and FIG49, the hinge mechanism 11 further includes a first door panel 115 and a second door panel 116. The first door panel 115 is fixedly connected to the side of the first rotating member 11212 away from the flexible display screen 12, and the second door panel 116 is fixedly connected to the side of the second rotating member 11222 away from the flexible display screen 12. Therefore, during the folding or unfolding of the hinge mechanism 11, the first door panel 115 slides relative to the first mounting plate 11211 along with the first rotating member 11212, and the second door panel 116 slides relative to the second mounting plate 11221 along with the second rotating member 11222. When the hinge mechanism 11 is in the flattened state, the first door panel 115 and the second door panel 116 can shield the first link assembly 1121 and the second link assembly 1122. When the hinge mechanism 11 is in the folded state, the end of the first door panel 115 away from the base 111 is accommodated in the receiving groove formed by the first mounting plate 11211 and the first housing 13, and the end of the second door panel 116 away from the base 111 is accommodated in the receiving groove formed by the second mounting plate 11221 and the second housing 14.

[0119] In other embodiments, the hinge mechanism 11 may further include a third door panel. The third door panel is positioned between the first door panel 115 and the second door panel 116 and is connected to the base 111. In one embodiment, the third door panel may be a separate component from the base 111 and may be fixedly connected to the main inner shaft 111b of the base 111 by bonding. In another embodiment, the third door panel and the main inner shaft 111b may be integrally formed, thereby enhancing the structural strength of the third door panel.

[0120] The above are only specific embodiments of the present application, but the scope of protection of this application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A hinge mechanism for a foldable electronic device, characterized in that: It includes a base and at least one half-axle module, wherein: Each of the half-shaft modules includes a first link assembly and a second link assembly; The first link assembly comprises a first mounting plate, a first rotating member, a first linking member, a second linking member and a first sliding member; the first mounting plate and the first rotating member are arranged on one side of the base, the first rotating member is slidably connected to the first mounting plate, and the first rotating member is rotatably connected to the base; the first linking member is rotatably connected to a side of the first rotating member facing the base; the second linking member is rotatably connected to a side of the first linking member away from the first rotating member; the first sliding member is rotatably connected to a side of the second linking member away from the first linking member; The second link assembly includes a second mounting plate, a second rotating member, a third link, a fourth link and a second sliding member; the second mounting plate and the second rotating member are arranged on a side of the base away from the first mounting plate, the second rotating member is slidably connected to the second mounting plate, and the second rotating member is rotatably connected to the base; the third link is rotatably connected to a side of the second rotating member facing the base; the fourth link is rotatably connected to a side of the third link away from the second rotating member; the second sliding member is rotatably connected to a side of the fourth link away from the third link; the second sliding member is fixedly connected to the first mounting plate, and the first sliding member is fixedly connected to the second mounting plate; When the first mounting plate and the second mounting plate are relatively folded or unfolded, the first rotating member rotates around the base and slides relative to the first mounting plate, and the second rotating member rotates around the base and slides relative to the second mounting plate; The flexible display screen of the electronic device is arranged on one side of the hinge mechanism; the hinge mechanism also includes a first support rod and a second support rod; the first support rod is located between the first mounting plate and the base, and the semi-axis module and the base are rotatably connected to the first support rod respectively; the second support rod is located between the second mounting plate and the base, and the semi-axis module and the base are rotatably connected to the second support rod respectively; the first support rod has a first support surface on a side facing the flexible display screen, the second support rod has a second support surface on a side facing the flexible display screen, and the base has a third support surface on a side facing the flexible display screen; When the hinge mechanism is in a flattened state, the first support surface, the second support surface and the third support surface form a flat support surface for supporting the flexible display screen; when the hinge mechanism is in a folded state, the first support surface, the second support surface and the third support surface form a U-shaped support surface for supporting the flexible display screen.

2. The rotating shaft mechanism according to claim 1, characterized in that: The side of the first support rod away from the base is connected to the first mounting plate, or the side of the first support rod away from the base is connected to the first rotating member; The side of the second support rod away from the base is connected to the second mounting plate, or the side of the second support rod away from the base is connected to the second rotating member.

3. The rotating shaft mechanism according to claim 2, characterized in that: A first arc arm is provided on one side of the first support rod facing the base; a first arc guide groove is provided on one side of the base facing the first support rod, the first arc arm is accommodated in the first arc guide groove and the first support rod is rotatably connected to the base by sliding in the first arc guide groove; A first pin is provided on a side of the first support rod facing the first mounting plate; a second arc-shaped guide groove is provided on a side of the first mounting plate facing the first support rod, the first pin is accommodated in the second arc-shaped guide groove and the first support rod and the first mounting plate are relative to each other by sliding in the second arc-shaped guide groove; or a second arc-shaped guide groove is provided on a side of the first rotating member facing the first support rod, the first pin is accommodated in the second arc-shaped guide groove and the first support rod and the first rotating member are relative to each other by sliding in the second arc-shaped guide groove; A second arc arm is provided on one side of the second support rod facing the base; a third arc guide groove is provided on one side of the base facing the second support rod, and the second arc arm is accommodated in the third arc guide groove and realizes the rotation connection between the second support rod and the base by sliding in the third arc guide groove; A second pin is provided on the side of the second support rod facing the second mounting plate; a fourth arc-shaped guide groove is provided on the side of the second mounting plate facing the second support rod, the second pin is accommodated in the fourth arc-shaped guide groove and slides in the fourth arc-shaped guide groove to achieve relative movement between the second support rod and the second mounting plate; or, a fourth arc-shaped guide groove is provided on the side of the second rotating member facing the second support rod, the second pin is accommodated in the fourth arc-shaped guide groove and slides in the fourth arc-shaped guide groove to achieve relative movement between the second support rod and the second rotating member.

4. The rotating shaft mechanism according to any one of claims 1 to 3, characterized in that: A third arc arm is provided on one side of the first rotating member facing the base, and a fifth arc guide groove is provided on one side of the base facing the first rotating member. The third arc arm is accommodated in the fifth arc guide groove and realizes the rotation connection between the first rotating member and the base by sliding in the fifth arc guide groove. A fourth arc arm is provided on the side of the second rotating member facing the base, and a sixth arc guide groove is provided on the side of the base facing the second rotating member. The fourth arc arm is accommodated in the sixth arc guide groove and realizes the rotational connection between the second rotating member and the base by sliding in the sixth arc guide groove.

5. The rotating shaft mechanism according to claim 4, characterized in that: The third arc arm has a first notch, and the fourth arc arm has a second notch; The first rotating member has a first end rotatably connected to the first link member, and the first end is located in the second notch; the second rotating member has a second end rotatably connected to the third link member, and the second end is located in the first notch.

6. The rotating shaft mechanism according to claim 5, characterized in that: The first rotating member is rotatably connected to the first link member via a first pin shaft, the first link member is rotatably connected to the second link member via a second pin shaft, and the second link member is rotatably connected to the first sliding member via a third pin shaft; The second rotating member is rotatably connected to the third link member via a fourth pin shaft, the third link member is rotatably connected to the fourth link member via a fifth pin shaft, and the fourth link member is rotatably connected to the second sliding member via a sixth pin shaft; A first limiting groove is provided on the side wall of the first notch near the second end, and the fourth pin shaft, the fifth pin shaft and the sixth pin shaft are at least partially accommodated in the first limiting groove and slide along the first limiting groove; a second limiting groove is provided on the side wall of the second notch near the first end, and the first pin shaft, the second pin shaft and the third pin shaft are at least partially accommodated in the second limiting groove and slide along the second limiting groove.

7. The rotating shaft mechanism according to any one of claims 1 to 6, characterized in that: A first slide groove is provided on a side of the first mounting plate away from the flexible display screen, the first rotating member is at least partially accommodated in the first slide groove, and the first rotating member is slidably connected to the first mounting plate by sliding in the first slide groove; a second slide groove is provided on a side of the first rotating member facing the first mounting plate, the second sliding member is accommodated in the second slide groove and is fixedly connected to the first mounting plate; A third slide groove is provided on a side of the second mounting plate away from the flexible display screen, and the second rotating member is at least partially accommodated in the third slide groove and the sliding connection between the second rotating member and the second mounting plate is achieved by sliding in the third slide groove; a fourth slide groove is provided on a side of the second rotating member facing the second mounting plate, and the first sliding member is accommodated in the fourth slide groove and fixedly connected to the second mounting plate.

8. The rotating shaft mechanism according to any one of claims 1 to 7, characterized in that: The hinge mechanism also includes a first door panel and a second door panel, wherein the first door panel is fixedly connected to a side of the first rotating member away from the flexible display screen, and the second door panel is fixedly connected to a side of the second rotating member away from the flexible display screen; the first door panel and the second door panel are used to shield the first link component and the second link component when the hinge mechanism is in a flattened state.

9. The rotating shaft mechanism according to claim 8, characterized in that: The rotating shaft mechanism also includes a third door panel, which is fixedly connected to the base and is located between the first door panel and the second door panel.

10. An electronic device, characterized in that: It includes a flexible display screen, a first shell, a second shell and a hinge mechanism as described in any one of claims 1 to 9, wherein the first shell is fixedly connected to the first mounting plate, the second shell is fixedly connected to the second mounting plate, and the flexible display screen continuously covers the first shell, the second shell and the hinge mechanism, and is fixedly connected to the first shell and the second shell respectively.

11. The electronic device according to claim 10, characterized in that: A first supporting sheet is provided on the side of the flexible display screen facing the first shell, and a side of the first supporting sheet away from the base is fixedly connected to the flexible display screen; a second supporting sheet is provided on the side of the flexible display screen facing the second shell, and a side of the second supporting sheet away from the base is fixedly connected to the flexible display screen.

Images