Rotating shaft mechanism and electronic device

Abstract

The embodiment of the present application provides a rotating shaft mechanism and electronic equipment, relates to the technical field of electronic equipment, and is used for providing a rotating shaft mechanism with relatively thin thickness. The rotating shaft mechanism comprises an inner shaft, a rotating component capable of rotating relative to the inner shaft, and an outer shaft, the inner shaft and the outer shaft are connected, and the rotating component is located between the inner shaft and the outer shaft. The rotating component comprises a first swing arm, a second swing arm and a linkage structure, the first swing arm and the second swing arm can rotate relative to the inner shaft. The linkage structure comprises a rotating piece, a first translation piece and a second translation piece, the first swing arm and the second swing arm can drive the first translation piece and the second translation piece to move in opposite directions, and the rotating piece can synchronize the movement of the first translation piece and the second translation piece. The rotating piece is horizontally placed, and the axial direction of the rotating piece is the thickness direction of the rotating shaft mechanism. By adjusting the thickness of the rotating piece, a flat rotating shaft mechanism can be obtained, and the axial dimension of the rotating piece is not limited.

Description

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] Flexible screens are the development trend of the display industry, and folding electronic devices have become the focus in recent years. Mobile phone manufacturers have also successively launched folding mobile phones.

[0003] The folding electronic device includes a housing, a rotating shaft mechanism, and a flexible screen. The housing includes a left housing and a right housing arranged separately. The rotating shaft mechanism is located between the left housing and the right housing. The flexible screen is mounted on the left housing and the right housing. When the left housing and the right housing are folded under the drive of the rotating shaft mechanism, the flexible screen can be folded to make the electronic device in a folded state. In the folded state, the electronic device has a small volume and is convenient to store. When the left housing and the right housing are unfolded under the drive of the rotating shaft mechanism, the flexible screen is unfolded to make the electronic device in an unfolded state. In the unfolded state, the display screen of the electronic device is larger, which can improve the user experience. Therefore, the rotating shaft mechanism is a key component of the folding electronic device.

[0004] With the continuous development of electronic devices towards thinness, the rotating shaft mechanism also needs to develop towards flatness. SUMMARY

[0005] The present application provides a rotating shaft mechanism and an electronic device with the rotating shaft mechanism, which are used to provide a rotating shaft mechanism with a relatively small thickness.

[0006] To achieve the above-mentioned purpose, the present application adopts the following technical solutions:

[0007] In a first aspect, the present application provides a rotating shaft mechanism, which can be applied in a foldable electronic device with a flexible screen, such as a folding screen mobile phone, a folding screen tablet computer, and the like.

[0008] The rotating shaft mechanism comprises: a detachably connected inner shaft and an outer shaft, and a rotating assembly located between the inner shaft and the outer shaft and capable of rotating relative to the inner shaft. The rotating assembly comprises a first swing arm, a second swing arm and a linkage structure. The first swing arm and the second swing arm are capable of rotating relative to or away from each other along the rotating axis of the rotating shaft mechanism, so as to switch the rotating shaft mechanism between the unfolded state and the folded state. When the first swing arm and the second swing arm rotate relative to each other, the rotating shaft mechanism is switched to the folded state. When the first swing arm and the second swing arm rotate away from each other, the rotating shaft mechanism is switched to the unfolded state. The linkage structure comprises a rotating member, a first translation member and a second translation member. The first translation member is in sliding connection with the inner shaft and is in clamping connection with the first swing arm. The second translation member is in sliding connection with the inner shaft and is in clamping connection with the second swing arm. The rotating member is connected with the first translation member and the second translation member and is in rotating connection with the inner shaft. The rotating member is horizontally placed, and the rotating axis of the rotating member is parallel to the first direction, which is the direction from the inner shaft to the outer shaft. During the conversion of the rotating shaft mechanism from the unfolded state to the folded state, the first swing arm and the second swing arm rotate relative to each other along the rotating axis of the rotating shaft mechanism, driving the first translation member and the second translation member to slide in the direction parallel to the second direction in the opposite direction. When the first translation member and the second translation member slide, the rotating member is driven to rotate. The second direction intersects with the direction of the rotating axis and the first direction, and the first direction is perpendicular to the direction of the rotating axis.

[0009] The rotating shaft mechanism provided by the embodiments of the present application, the linkage structure comprises a first translation member, a second translation member and a rotating member. The first translation member and the second translation member always move along the width direction (second direction) of the rotating shaft mechanism. The size requirement of the first translation member and the second translation member in the thickness direction (first direction) of the rotating shaft mechanism is the thickness of the first translation member and the second translation member. At the same time, the axial direction of the rotating member is the thickness direction of the rotating shaft mechanism. That is, the rotating member is horizontally placed in the rotating shaft mechanism. Therefore, the size requirement of the rotating member in the thickness direction of the rotating shaft mechanism is also the thickness of the rotating member in the axial direction. Since the radial direction of the rotating member in the linkage structure is parallel to the thickness direction, the thickness requirement of the linkage structure in the thickness direction is at least the outer diameter of the linkage structure. Compared with the outer diameter of the linkage structure, the thickness requirement of the linkage structure provided by the embodiments of the present application is obviously reduced, which is suitable for the flat space of the rotating shaft mechanism, the structure is simple, the virtual position is small, and the thickness of the rotating shaft mechanism is thin.

[0010] In a possible implementation, the first swing arm comprises a first rotating member and a first flat plate fixedly connected; the second swing arm comprises a second rotating member and a second flat plate fixedly connected; along the direction of the rotating axis, the first rotating member and the second rotating member are located on the two sides of the linkage structure; along the second direction, the first flat plate and the second flat plate are located on the two sides of the linkage structure; the first flat plate can drive the first rotating member to rotate relative to the inner shaft; and the second flat plate can drive the second rotating member to rotate relative to the inner shaft. The structure of the swing arm comprising the rotating member and the flat plate is simple and easy to implement.

[0011] In a possible implementation, the first translation member comprises a first recessed portion recessed away from the first rotating member, the first rotating member comprises a first protruding portion protruding towards the first translation member, and the first protruding portion is connected with the first recessed portion to realize movement of the first translation member during rotation of the first rotating member.

[0012] That is, the first protruding portion and the first recessed portion are connected to realize movement of the first translation member along the second direction by the first rotating member, and the connection mode of the protruding portion and the recessed portion is simple in structure and small in space occupation.

[0013] In a possible implementation, the second translation member comprises a second recessed portion recessed away from the fourth rotating member, the fourth rotating member comprises a second protruding portion protruding towards the second translation member, and the second protruding portion is connected with the second recessed portion to realize movement of the second translation member during rotation of the fourth rotating member.

[0014] That is, the second protruding portion and the second recessed portion are connected to realize movement of the second translation member along the second direction by the fourth rotating member, and the connection mode of the protruding portion and the recessed portion is simple in structure and small in space occupation.

[0015] In a possible implementation, the first protruding portion is located at an end of the first rotating member away from the first swing arm, and the first recessed portion is located at an end of the first translation member close to the first swing arm.

[0016] That is, the first protruding portion is arranged at an inner end of the first rotating member, and the first recessed portion is arranged at an outer end of the first translation member. In this way, the movement amount of the first translation member is large during folding of the rotating shaft mechanism, full-angle rotation of the first rotating member is realized by a relatively delicate structure, the space requirement in the second direction of the rotating shaft mechanism is relatively small, and the rotating shaft mechanism is facilitated to be made delicate.

[0017] In a possible implementation, the second protruding portion is located at an end of the fourth rotating member away from the second swing arm, and the second recessed portion is located at an end of the second translation member close to the second swing arm.

[0018] That is, the second protruding portion is arranged at an inner end of the fourth rotating member, and the second recessed portion is arranged at an outer end of the second translation member. In this way, the movement amount of the second translation member is large during folding of the rotating shaft mechanism, full-angle rotation of the fourth rotating member is realized by a relatively delicate structure, the space requirement in the second direction of the rotating shaft mechanism is relatively small, and the rotating shaft mechanism is facilitated to be made delicate.

[0019] In a possible implementation, the first swing arm further comprises a third rotating member fixedly connected with the first plate, the third rotating member being arranged opposite to the first rotating member on two sides of the linkage structure; the first plate can further drive the third rotating member to rotate relative to the inner shaft. The second swing arm further comprises a fourth rotating member fixedly connected with the second plate, the fourth rotating member being arranged opposite to the second rotating member on two sides of the linkage structure; the second plate can further drive the fourth rotating member to rotate relative to the inner shaft.

[0020] That is, two rotating members are connected with each plate, and the first swing arm and the second swing arm are symmetrically arranged. In this way, the support stability of the plate is high, and the symmetry of the rotating mechanism is improved.

[0021] In a possible implementation, the rotating member comprises a gear, the first rotating member comprises a first gear rack, and the second rotating member comprises a second gear rack, the first gear rack and the second gear rack being engaged with the gear respectively.

[0022] That is, through the transmission cooperation of the gear and the gear rack, the first translating member and the second translating member are synchronously rotated, the meshing transmission structure is simple in structure, small in occupied space, and stable in transmission.

[0023] In a possible implementation, the inner shaft is provided with a first guide portion on a side facing the linkage structure, the first guide portion being capable of guiding the first translating member to move in a direction parallel to the second direction.

[0024] Through the first guide portion, the first translating member can be balanced and stably linearly moved in the second direction.

[0025] In a possible implementation, the inner shaft is provided with a second guide portion on a side facing the linkage structure, the second guide portion being capable of guiding the second translating member to move in a direction parallel to the second direction.

[0026] Through the second guide portion, the second translating member can be balanced and stably linearly moved in the second direction.

[0027] In a possible implementation, the first guide portion comprises a first guide groove and a first guide protrusion extending in the second direction; the first guide groove and the first guide protrusion are sequentially arranged in the second direction.

[0028] Part of the first guide portion is the first guide groove, and part of the first guide portion is the first guide protrusion, so that the inner shaft is not thinned too much at the position provided with the first guide portion, and the rigidity of the inner shaft is not affected.

[0029] In a possible implementation, the first guide groove is arranged close to the first plate and adjacent to the first rotating member; and the first guide protrusion is arranged close to the second plate and adjacent to the second rotating member.

[0030] That is, the first guide part is correspondingly provided as a first guide groove in a region where the first protrusion moves in the first rotating member, so as to avoid the first protrusion. In this way, the blocking effect of the first guide part on the movement of the first protrusion can be reduced.

[0031] In a possible implementation, the second guide part includes a second guide groove and a second guide protrusion extending along the second direction, and the second guide groove and the second guide protrusion are sequentially arranged along the second direction.

[0032] Part of the second guide part is the second guide groove, and part of the second guide part is the second guide protrusion. In this way, the inner shaft can be prevented from being thinned too much at the position where the second guide part is arranged, so as to affect the rigidity of the inner shaft.

[0033] In a possible implementation, the second guide groove is arranged close to the second flat plate and adjacent to the fourth rotating member, and the second guide protrusion is arranged close to the first flat plate and adjacent to the third rotating member.

[0034] That is, the second guide part is correspondingly provided as a second guide groove in a region where the second protrusion moves in the fourth rotating member, so as to avoid the second protrusion. In this way, the blocking effect of the second guide part on the movement of the second protrusion can be reduced.

[0035] In a possible implementation, the inner shaft is provided with a first limiting part and a second limiting part on a side facing the linkage structure; along the second direction, the first limiting part and the second limiting part are located on two sides of the rotating member; and surfaces of the first limiting part and the second limiting part facing the rotating member are arc surfaces and are in sliding connection with the rotating member.

[0036] In this way, the first limiting part and the second limiting part match the rotating track of the rotating member, and the rotating member is limited between the first limiting part and the second limiting part, so as to limit the rotating track of the rotating member.

[0037] In a possible implementation, a surface of the inner shaft facing away from the rotating assembly is a plane.

[0038] After the rotating shaft mechanism is applied to the electronic device, the display screen of the electronic device is arranged on the surface of the inner shaft. By arranging the surface of the inner shaft as a plane, the rotating shaft mechanism is supported by a plane at all positions during the whole folding process, so as to protect the display screen and improve the reliability of the screen.

[0039] In a possible implementation, the rotating shaft mechanism further comprises an outer shaft, and the inner shaft is connected with the outer shaft; the inner shaft has a first circular-arc protruding part and a second circular-arc protruding part on a side facing the first rotating part and the second rotating part, and the outer shaft has a first circular-arc recessed part and a second circular-arc recessed part on a side facing the first rotating part and the second rotating part; the first circular-arc protruding part and the first circular-arc recessed part enclose a first circular-arc groove, and the second circular-arc protruding part and the second circular-arc recessed part enclose a second circular-arc groove; the first rotating part is movable in the first circular-arc groove, and the second rotating part is movable in the second circular-arc groove.

[0040] That is, the first rotating part and the second rotating part are both movable in the circular-arc grooves. Then, the first rotating part and the second rotating part rotate around the axis of the first circular-arc groove and the axis of the second circular-arc groove respectively, and the rotation is stable and the deviation is small.

[0041] In a possible implementation, the inner shaft has a third circular-arc protruding part and a fourth circular-arc protruding part on a side facing the third rotating part and the fourth rotating part, and the outer shaft has a third circular-arc recessed part and a fourth circular-arc recessed part; the third circular-arc protruding part and the third circular-arc recessed part enclose a third circular-arc groove, and the fourth circular-arc protruding part and the fourth circular-arc recessed part enclose a fourth circular-arc groove; the third rotating part is movable in the third circular-arc groove, and the fourth rotating part is movable in the fourth circular-arc groove.

[0042] That is, the third rotating part and the fourth rotating part are both movable in the circular-arc grooves. Then, the third rotating part and the fourth rotating part rotate around the axis of the third circular-arc groove and the axis of the fourth circular-arc groove respectively, and the rotation is stable and the deviation is small.

[0043] In a possible implementation, the rotating assembly further comprises a first damping part, and the first damping part is slidingly connected to a side of the second rotating part and the third rotating part away from the linkage structure; when the first swing arm drives the third rotating part to rotate and the second swing arm drives the second rotating part to rotate, the first damping part is configured to apply resistance to the first swing arm and the second swing arm.

[0044] By arranging the first damping part in the rotating assembly, when the first swing arm and the second swing arm rotate, the first damping part applies resistance to the first swing arm and the second swing arm, so that the first swing arm and the second swing arm can hover when rotating relative to the inner shaft. When the rotating shaft mechanism is applied to an electronic device, because the first shell is fixedly connected with the first swing arm, and the second shell is fixedly connected with the second swing arm, the hovering demand in the folding process of the electronic device can be met, and the user experience is improved.

[0045] In a possible implementation, the third rotating member and the second rotating member are respectively provided with a first cam and a second cam on a side away from the linkage structure; the first damping member comprises a first connected cam, a first elastic part, and a first pin shaft; the first connected cam is sleeved on the first pin shaft at a side close to the linkage structure and engages with the first cam and the second cam; the first connected cam is rotatably installed on the first pin shaft, and the first elastic part is sleeved on the first pin shaft.

[0046] In this way, the first damping member can exert resistance with different strengths, and the strength of the resistance can be adjusted as required to meet the multi-angle hovering requirement of the rotating shaft mechanism.

[0047] In a possible implementation, the rotating assembly further comprises a fifth rotating member and a sixth rotating member on a side of the first damping member away from the linkage structure; the fifth rotating member and the sixth rotating member are arranged side by side along the second direction, the fifth rotating member is connected to the first swing arm at a side away from the sixth rotating member, the sixth rotating member is connected to the second swing arm at a side away from the fifth rotating member, and the fifth rotating member and the sixth rotating member are capable of rotating relative to the inner shaft, respectively.

[0048] That is, each swing arm can be connected to multiple rotating members, and the multiple rotating members are reasonably arranged to make the swing arm bear force evenly and rotate stably.

[0049] In a possible implementation, the first swing arm further comprises a fifth rotating member, the fifth rotating member is fixedly connected to the first plate, and the fifth rotating member is arranged opposite to the third rotating member on two sides of the first damping member; the first plate can also drive the fifth rotating member to rotate relative to the inner shaft. The second swing arm further comprises a sixth rotating member, the sixth rotating member is fixedly connected to the second plate, and the sixth rotating member is arranged opposite to the second rotating member on two sides of the first damping member; the second plate can also drive the sixth rotating member to rotate relative to the inner shaft.

[0050] That is, the plate in the swing arm is supported by multiple rotating members, which can improve the stability of the plate.

[0051] In a possible implementation, the rotating assembly further comprises a second damping member; the second damping member is slidably connected to the fifth rotating member and the sixth rotating member at a side close to the first damping member; when the first swing arm drives the fifth rotating member to rotate and the second swing arm drives the sixth rotating member to rotate, the second damping member is used to exert resistance to the first swing arm and the second swing arm.

[0052] That is, the rotating assembly can comprise multiple damping members, and the multiple damping members can synchronously exert resistance to the swing arm at multiple positions and multiple angles to improve the stability of the swing arm in hovering.

[0053] In a possible implementation, in the direction from the first side to the second side, the rotating shaft mechanism comprises multiple rotating assemblies arranged at intervals.

[0054] That is, the number and layout of the rotating assembly in the rotating shaft mechanism can be flexibly adjusted in combination with the shape of the electronic device to meet the needs in different application scenarios

[0055] In a possible implementation, the rotating shaft mechanism further includes a decorative cover, which is located on the side of the rotating assembly away from the inner shaft and connected with the inner shaft.

[0056] By arranging the decorative cover, the internal structure of the rotating shaft mechanism is hidden in both the folded state and the unfolded state, improving the appearance of the rotating shaft mechanism.

[0057] In a second aspect, the embodiment of the present application provides an electronic device, including: a first shell, a second shell, a flexible screen, and a rotating shaft mechanism according to any one of the first aspect; the first shell is detachably connected with the first swing arm, and the second shell is detachably connected with the second swing arm; the first shell includes a first surface, the second shell includes a second surface, the rotating shaft mechanism includes a third surface located on the side of the inner shaft away from the rotating assembly, and the flexible screen continuously covers the first surface, the third surface, and the second surface, and is fixedly connected with the first surface of the first shell and the second surface of the second shell respectively.

[0058] In a possible implementation, the rotating shaft mechanism includes a decorative cover; when the electronic device is unfolded, the decorative cover is hidden in the first shell and the second shell; when the electronic device is folded, the decorative cover is exposed outside the first shell and the second shell to make up for the gap between the first shell and the second shell.

[0059] That is, whether the electronic device is in a folded state or an unfolded state, the first shell and the second shell are seamlessly closed from the outside of the electronic device, thereby improving the appearance of the display device.

[0060] In a possible implementation, the electronic device includes a mobile terminal, such as a folding mobile phone, a folding tablet, a folding notebook, a folding e-book, etc. BRIEF DESCRIPTION OF DRAWINGS

[0061] Figure 1 FIG. 1 is a schematic diagram of a folding structure of an electronic device according to an embodiment of the present application;

[0062] Figure 2 FIG. 2 is another schematic diagram of a folding structure of an electronic device according to an embodiment of the present application;

[0063] Figure 3 FIG. 3 is a schematic diagram of a structure of a rotating shaft mechanism according to an embodiment of the present application;

[0064] Figure 4A FIG. 4 is a state diagram of a rotating shaft mechanism in an unfolded state according to an embodiment of the present application.

[0065] Figure 4B A state diagram of a rotating shaft mechanism in a folded state according to an embodiment of the present application;

[0066] Figure 5 An exploded view of a rotating shaft mechanism according to an embodiment of the present application;

[0067] Figure 6 A structural schematic view of a rotating assembly according to an embodiment of the present application;

[0068] Figure 7 A structural schematic view of a rotating member and a flat plate according to an embodiment of the present application;

[0069] Figure 8 A partial enlarged view of a linkage structure according to an embodiment of the present application;

[0070] Figure 9A A cooperation process diagram of a translating member and a rotating member according to an embodiment of the present application;

[0071] Figure 9B Another cooperation process diagram of a translating member and a rotating member according to an embodiment of the present application;

[0072] Figure 9C Still another cooperation process diagram of a translating member and a rotating member according to an embodiment of the present application;

[0073] Figure 10 A state diagram of a first damping member when a rotating shaft mechanism is in a flattened state according to an embodiment of the present application;

[0074] Figure 11 A state diagram of a rotating shaft mechanism in a flattened state according to an embodiment of the present application, Figure 10 A damping principle structural diagram of the first damping member shown;

[0075] Figure 12 A state diagram of a first damping member when a rotating shaft mechanism is in a folded state according to an embodiment of the present application;

[0076] Figure 13 A damping principle structural diagram of the first damping member shown according to an embodiment of the present application; Figure 12 A damping principle structural diagram of the first damping member shown according to an embodiment of the present application;

[0077] Figure 14 A damping principle structural diagram of a first damping member when a rotating shaft mechanism is in an intermediate angle state according to an embodiment of the present application;

[0078] Figure 15 A structural schematic view of an inner shaft according to an embodiment of the present application;

[0079] Figure 16 A structure schematic view of the inner shaft and the rotating assembly provided by the embodiment of the present application after being assembled in a flat state;

[0080] Figure 17 A structure schematic view of the inner shaft and the rotating assembly provided by the embodiment of the present application after being assembled in a folded state;

[0081] Figure 18 A structure schematic view of the inner shaft provided by the embodiment of the present application;

[0082] Figure 19A A structure schematic view of the outer shaft provided by the embodiment of the present application;

[0083] Figure 19B A cooperation schematic view of the inner shaft, the outer shaft and the damping member provided by the embodiment of the present application;

[0084] Figure 20 A structure schematic view of the inner shaft, the rotating assembly and the outer shaft provided by the embodiment of the present application after being assembled;

[0085] Figure 21 An exploded view of the electronic device provided by the embodiment of the present application;

[0086] Figure 22 A use state schematic view of the electronic device provided by the embodiment of the present application;

[0087] Figure 23 A use state schematic view of another electronic device provided by the embodiment of the present application;

[0088] Figure 24 A use state schematic view of still another electronic device provided by the embodiment of the present application.

[0089] Reference signs:

[0090] 1 - electronic device;

[0091] 11 - first shell; 12 - second shell; 13 - third shell; 14 - first rotating shaft mechanism; 15 - second rotating shaft mechanism;

[0092] 2 - rotating shaft mechanism;

[0093] 20 - inner shaft;

[0094] 21 - first arc-shaped protruding part; 22 - second arc-shaped protruding part; 23 - third arc-shaped protruding part; 24 - fourth arc-shaped protruding part; 25 - fifth arc-shaped protruding part; 26 - sixth arc-shaped protruding part; 27 - shaft section; 20a - first assembly opening; 20b - end appearance part; 20c - first guide part; 20c1 - first guide groove; 20c2 - first guide protrusion; 20d - second guide part; 20e - first limiting part; 20f - second limiting part; 20h - first matching part; 20h1 - first cam matching part; 20h2 - first elastic part matching part; 20i - second matching part; 20j - first connecting part;

[0095] 30 - outer shaft;

[0096] 31 - first arc-shaped recessed part; 32 - second arc-shaped recessed part; 33 - third arc-shaped recessed part; 34 - fourth arc-shaped recessed part; 35 - fifth arc-shaped recessed part; 36 - sixth arc-shaped recessed part; 30a - second assembly opening; 30b - end matching part; 30c - first translation part matching part; 30d - second translation part matching part; 30e - third limiting part; 30f - fourth limiting part; 30h - third matching part; 30i - fourth matching part; 30j - second connecting part;

[0097] U1 - first arc-shaped groove; U2 - second arc-shaped groove;

[0098] 40 - rotating assembly;

[0099] 40A - first swing arm; 40B - second swing arm; 41 - first rotating part; 411 - first protruding part; 42 - second rotating part; 421 - second protruding part; 422 - second cam; 43 - third rotating part; 431 - first cam; 44 - fourth rotating part; 45 - first flat plate; 46 - second flat plate; 47 - linkage structure; 471 - first translation part; 471a - groove; 4711 - first recessed part; 472 - second translation part; 472a - groove; 4721 - second recessed part; 473 - rotating part; 48 - fifth rotating part; 49 - sixth rotating part; 40a - third assembly opening;

[0100] 50 - decorative cover;

[0101] 60 - first damping part;

[0102] 61 - first connected cam; 62 - first elastic part; 63 first pin shaft; 64 - first gasket; 65 - second gasket;

[0103] 70 - second damping part;

[0104] 3 - display screen;

[0105] 301 - first portion; 302 - second portion; 303 - third portion; 304 - fourth portion; 305 - fifth portion. DETAILED DESCRIPTION

[0106] The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments of the present application.

[0107] Hereinafter, the terms "second", "first", and the like are only used for description convenience, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "second", "first", and the like can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0108] In addition, in the embodiments of the present application, the orientation terms such as "upper", "lower", "left", "right", and the like can include but not limited to the orientation defined by the relative placement of the components in the drawings. It should be understood that these directional terms can be relative concepts, which are used for relative description and clarification, and can be changed accordingly according to the change of the placement of the components in the drawings.

[0109] In the embodiments of the present application, unless otherwise explicitly specified and limited, the term "connection" should be understood in a broad sense, for example, "connection" can be fixed connection, or detachable connection, or integral; can be directly connected, or indirectly connected through intermediate medium. In addition, the term "coupling" can be direct electrical connection, or indirect electrical connection through intermediate medium. The term "contact" can be direct contact, or indirect contact through intermediate medium.

[0110] In the embodiments of the present application, "and / or" describes the association relationship of the associated objects, which means that there can be three kinds of relationships, for example, A and / or B, which can represent the following three cases: A exists alone, A and B exist together, and B exists alone, wherein A and B can be singular or plural. The character " / " generally represents that the associated objects before and after it are in an "or" relationship.

[0111] This application provides an electronic device with a foldable screen. Examples of such devices include consumer electronics and automotive electronic products. Consumer electronics include mobile phones, tablets, laptops, e-readers, personal computers (PCs), personal digital assistants (PDAs), desktop monitors, smart wearable products (e.g., smartwatches, smart glasses, smart bracelets), virtual reality (VR) devices, augmented reality (AR) devices, and cameras. Automotive electronic products include car navigation systems and in-vehicle high-density digital video discs (DVDs). This application does not impose any special limitations on the specific form of the aforementioned electronic device.

[0112] Figure 1 and Figure 2 This is a schematic diagram of a folding structure of an electronic device provided in an embodiment of this application.

[0113] In some embodiments, such as Figure 1 As shown, the electronic device 1 provided in this application embodiment is a two-fold screen electronic device.

[0114] like Figure 1 As shown, the electronic device 1 includes a first housing 11, a second housing 12, and a first rotating shaft mechanism 14. The first housing 11 and the second housing 12 are spaced apart, and the first rotating shaft mechanism 14 is located between the first housing 11 and the second housing 12 and is connected to the first housing 11 and the second housing 12 respectively.

[0115] The first housing 11 and / or the second housing 12 can be the mid-frame structure of the electronic device 1. For example, the first housing 11 and / or the second housing 12 can each form an installation space for installing components such as batteries, circuit boards, cameras, headphones, handsets, buttons, and batteries of the electronic device. The circuit board can integrate electronic components such as the main controller, storage unit, antenna module, and power management module of the electronic device, while the battery can power the circuit board, receiver, speaker, camera, and other electronic components.

[0116] In addition, the first shell 11 and the second shell 12 can be of equal or unequal thickness, and this application embodiment does not limit them.

[0117] In one possible design, both the first housing 11 and the second housing 12 may have mounting spaces, distributing the electronic components of the aforementioned electronic device 1 within the two housings.

[0118] In another possible design, the mounting space can be arranged only in the first shell 11, and the electronic components of the electronic device 1 can be distributed in the first shell 11. Alternatively, the mounting space can be arranged in both the first shell 11 and the second shell 12, but most of the electronic components of the electronic device 1 are arranged in the first shell 11, and a small part of the electronic components are arranged in the second shell 12, so that the second shell 12 is more lightweight, and the folding and unfolding of the electronic device 1 can be more convenient.

[0119] In some embodiments, as shown in Figure 2 , the electronic device 1 provided by the embodiments of the present application is a three-fold screen electronic device.

[0120] As shown in Figure 2 , the electronic device 1 includes a first shell 11, a second shell 12, a third shell 13, a first hinge mechanism 14, and a second hinge mechanism 15.

[0121] The first shell 11 and the second shell 12 are spaced apart, the first hinge mechanism 14 is located between the first shell 11 and the second shell 12 and connected to the first shell 11 and the second shell 12 respectively. The second hinge mechanism 15 is located between the second shell 12 and the third shell 13 and connected to the second shell 12 and the third shell 13 respectively.

[0122] The first hinge mechanism 14 and the second hinge mechanism 15 are important components of the folding electronic device, and the thickness of the first hinge mechanism 14 and the second hinge mechanism 15 in the thickness direction of the electronic device 1 directly affects the thickness of the entire electronic device 1.

[0123] Figure 3 A structure diagram of a hinge mechanism provided by the embodiments of the present application.

[0124] In some embodiments, as shown in Figure 3 , the hinge mechanism 2 includes an inner shaft 20, an outer shaft 30, and a rotating assembly 40. The rotating assembly 40 is located between the inner shaft 20 and the outer shaft 30, and the rotating assembly 40 includes a plurality of gears engaged in sequence, and the axial direction of the gears is parallel to the rotation axis of the hinge mechanism 2.

[0125] Due to the diameter of the gears, the thickness of the hinge mechanism 2 cannot be made very thin, thereby affecting the thickness of the entire electronic device 1, and the demand for thinness cannot be met.

[0126] Figure 4A And Figure 4B show the cross-sectional schematic diagram of the hinge mechanism provided by the present application in two different states. Among them, Figure 4A shows the state diagram when the hinge mechanism is in the unfolded state, Figure 4B shows the state diagram when the hinge mechanism is in the folded state. Figure 5An exploded view of a rotating shaft mechanism provided by an embodiment of the present application.

[0127] An embodiment of the present application provides a rotating shaft mechanism 2, which will be described in conjunction with Figure 4A 、 Figure 4B and Figure 5 An embodiment of the present application provides a rotating shaft mechanism 2, which includes an inner shaft 20 and a rotating assembly 40. In some embodiments, the rotating shaft mechanism 2 further includes an outer shaft 30 and a decorative cover 50. The inner shaft 20, the rotating assembly 40, the outer shaft 30, and the decorative cover 50 are sequentially arranged along the thickness direction (first direction Z) of the rotating shaft mechanism 2.

[0128] As shown in Figure 5 , the direction in which the inner shaft 20, the rotating assembly 40, the outer shaft 30, and the decorative cover 50 are stacked is the thickness direction of the rotating shaft mechanism 2. In this embodiment, the thickness direction of the rotating shaft mechanism 2 is referred to as the first direction Z, the length direction of the rotating shaft mechanism 2 (i.e., the direction of the rotation axis of the rotating shaft mechanism 2) is referred to as the third direction Y, and the width direction of the rotating shaft mechanism 2 is referred to as the second direction X. The first direction Z is perpendicular to the extension direction Y of the rotating shaft.

[0129] The inner shaft 20 and the outer shaft 30 are separately arranged and detachably connected, for example, by screws. The rotating assembly 40 is arranged with assembly openings on the inner shaft 20 and the outer shaft 30. The rotating assembly 40 is located between the inner shaft 20 and the outer shaft 30, and is also provided with matching assembly openings. Figure 5 The assembly method shown in is only an example and is not limited in any way. The inner shaft 20 and the outer shaft 30 are separately arranged, which facilitates the arrangement and assembly connection of the rotating assembly 40.

[0130] Regarding the rotating assembly 40 included in the rotating shaft mechanism 2, the rotating assembly 40 is arranged between the inner shaft 20 and the outer shaft 30. In some embodiments, along the third direction Y, one rotating assembly 40 provided by an embodiment of the present application can be arranged, or multiple rotating assemblies 40 provided by an embodiment of the present application can be arranged, Figure 5 only three rotating assemblies 40 arranged between the inner shaft 20 and the outer shaft 30 are shown as an example.

[0131] Figure 6 A structure diagram of a rotating assembly provided by an embodiment of the present application.

[0132] In some embodiments, as shown in Figure 6 , the rotating assembly 40 includes a first swing arm 40A, a second swing arm 40B, and a linkage structure 47.

[0133] The first swing arm 40A and the second swing arm 40B are capable of rotating relative to or opposite to the rotation axis of the rotation shaft mechanism 2, so as to switch the rotation shaft mechanism 2 between the unfolded state and the folded state. For example, from the middle perspective, the rotation shaft mechanism 2 is in the unfolded state, and when the first swing arm 40A and the second swing arm 40B rotate relative to each other, the rotation shaft mechanism 2 can be switched to the folded state. Conversely, when the rotation shaft mechanism 2 is in the folded state, the first swing arm 40A and the second swing arm 40B rotate opposite to each other, so that the rotation shaft mechanism 2 can be switched to the unfolded state. Figure 6

[0134] In some embodiments, the rotation axis of the rotation shaft mechanism 2 is parallel to the third direction Y, for example, the rotation axis of the rotation shaft mechanism 2 is the center line of the rotation shaft mechanism 2.

[0135] In some embodiments, the first swing arm 40A includes a first rotating piece 41 and a first flat plate 45, and the first rotating piece 41 and the first flat plate 45 are fixedly connected. For example, the first rotating piece 41 and the first flat plate 45 are integrally formed.

[0136] The second swing arm 40B includes a second rotating piece 42 and a second flat plate 46, and the second rotating piece 42 and the second flat plate 46 are fixedly connected. For example, the second rotating piece 42 and the second flat plate 46 are integrally formed.

[0137] In the third direction Y, the first rotating piece 41 and the second rotating piece 42 are located on both sides of the linkage structure 47. For example, the first rotating piece 41 and the second rotating piece 42 can be symmetrically arranged on opposite sides of the linkage structure 47, or the first rotating piece 41 and the second rotating piece 42 can be arranged on opposite sides of the linkage structure 47 along the diagonal line.

[0138] In the second direction X, the first flat plate 45 and the second flat plate 46 are located on both sides of the linkage structure 47. For example, the first flat plate 45 and the second flat plate 46 can be symmetrically arranged on both sides of the linkage structure 47.

[0139] The first flat plate 45 can drive the first rotating piece 41 to rotate relative to the inner shaft 20, so as to realize the rotation of the first swing arm 40A relative to the inner shaft 20. The second flat plate 46 can drive the second rotating piece 42 to rotate relative to the inner shaft 20, so as to realize the rotation of the second swing arm 40B relative to the inner shaft 20.

[0140] Please continue to refer to Figure 6 In some embodiments, the first swing arm 40A further includes a third rotating piece 43, and the third rotating piece 43 is fixedly connected with the first flat plate 45. For example, the third rotating piece 43 and the first flat plate 45 are integrally formed.

[0141] ​The third rotating member 43 is arranged opposite to the first rotating member 41 on both sides of the linkage structure 47. When the rotating shaft mechanism 2 is in the unfolded state, the third rotating member 43 and the second rotating member 42 are arranged side by side along the second direction X and are located on the second side of the linkage structure 47.

[0142] The first rotating member 41 comprises a first end and a second end, and the fourth rotating member 44 comprises a first end and a second end. When the rotating shaft mechanism 2 is in the unfolded state, the first end of the first rotating member 41 and the first end of the fourth rotating member 44 are arranged adjacent to each other. The second end of the first rotating member 41 away from the fourth rotating member 44 is connected to the first flat plate 45, and the second end of the fourth rotating member 44 away from the first rotating member 41 is connected to the second flat plate 46.

[0143] The second swing arm 40B further comprises a fourth rotating member 44, which is fixedly connected to the second flat plate 46, for example, the fourth rotating member 44 and the second flat plate 46 are integrally formed.

[0144] The fourth rotating member 44 is arranged opposite to the second rotating member 42 on both sides of the linkage structure 47. When the rotating shaft mechanism 2 is in the unfolded state, the first rotating member 41 and the fourth rotating member 44 are arranged side by side along the second direction X and are located on the first side of the linkage structure 47.

[0145] The third rotating member 43 comprises a first end and a second end, and the second rotating member 42 comprises a first end and a second end. When the rotating shaft mechanism 2 is in the unfolded state, the first end of the third rotating member 43 and the first end of the second rotating member 42 are arranged adjacent to each other. The second end of the third rotating member 43 away from the second rotating member 42 is connected to the first flat plate 45, and the second end of the second rotating member 42 away from the third rotating member 43 is connected to the second flat plate 46.

[0146] The first flat plate 45 can also drive the third rotating member 43 to rotate relative to the inner shaft 20, and the second flat plate 46 can also drive the fourth rotating member 44 to rotate relative to the inner shaft 20. The first rotating member 41, the second rotating member 42, the third rotating member 43, and the fourth rotating member 44 can rotate relative to the inner shaft 20, respectively. In some embodiments, the first rotating member 41 and the third rotating member 43 rotate synchronously, and the fourth rotating member 44 and the second rotating member 42 rotate synchronously.

[0147] For example, when the rotating shaft mechanism 2 rotates from the unfolded state to the folded state, the first rotating member 41 and the third rotating member 43 rotate counterclockwise from the state shown in FIG. 8A to the state shown in FIG. 8B. Figure 4A Simultaneously, the second rotating member 42 and the fourth rotating member 44 rotate clockwise from the state shown in FIG. 8A to the state shown in FIG. 8C. Figure 4B For example, when the rotating shaft mechanism 2 rotates from the unfolded state to the folded state, the first rotating member 41 and the third rotating member 43 rotate counterclockwise from the state shown in FIG. 8A to the state shown in FIG. 8B. Figure 4A Simultaneously, the second rotating member 42 and the fourth rotating member 44 rotate clockwise from the state shown in FIG. 8A to the state shown in FIG. 8C. Figure 4B For example, when the rotating shaft mechanism 2 rotates from the unfolded state to the folded state, the first rotating member 41 and the third rotating member 43 rotate counterclockwise from the state shown in FIG. 8A to the state shown in FIG. 8B.

[0148] When the rotating shaft mechanism 2 rotates from the folded state to the unfolded state, the first rotating member 41 and the third rotating member 43 rotate clockwise from the state shown in Figure 4B to the state shown in Figure 4A At the same time, the second rotating member 42 and the fourth rotating member 44 rotate counterclockwise from the state shown in Figure 4B to the state shown in Figure 4A .

[0149] In some embodiments, as shown in Figure 6 , the first swing arm 40A further includes a fifth rotating member 48, which is fixedly connected with the first flat plate 45. For example, the fifth rotating member 48 and the first flat plate 45 are in an integrated structure.

[0150] The second swing arm 40B further includes a sixth rotating member 49, which is fixedly connected with the second flat plate 46. For example, the sixth rotating member 49 and the second flat plate 46 are in an integrated structure.

[0151] The fifth rotating member 48 is arranged on the side of the third rotating member 43 away from the linkage structure 47, and the sixth rotating member 49 is arranged on the side of the second rotating member 42 away from the linkage structure 47. When the rotating shaft mechanism 2 is in the unfolded state, the fifth rotating member 48 and the sixth rotating member 49 are arranged side by side along the second direction X.

[0152] One end of the fifth rotating member 48, which faces away from the sixth rotating member 49, is connected with the first flat plate 45, and the first flat plate 45 can also drive the fifth rotating member 48 to rotate relative to the inner shaft 20. One end of the sixth rotating member 49, which faces away from the fifth rotating member 48, is connected with the second flat plate 46, and the second flat plate 46 can also drive the sixth rotating member 49 to rotate relative to the inner shaft 20.

[0153] In some embodiments, the first flat plate 45 drives the first rotating member 41, the third rotating member 43, and the fifth rotating member 48 to rotate synchronously, and the second flat plate 46 drives the second rotating member 42, the fourth rotating member 44, and the sixth rotating member 49 to rotate synchronously.

[0154] Figure 7 A structure schematic diagram of a rotating member and a flat plate provided by an embodiment of the present application.

[0155] In some embodiments, as shown in Figure 7 , the first rotating member 41, the third rotating member 43, the fifth rotating member 48, and the first flat plate 45 are in an integrated structure, and the fourth rotating member 44, the second rotating member 42, the sixth rotating member 49, and the second flat plate 46 are in an integrated structure.

[0156] In some embodiments, the first rotating member 41, the third rotating member 43, the fifth rotating member 48, the first flat plate 45, the second rotating member 42, the fourth rotating member 44, the sixth rotating member 49 and the second flat plate 46 are respectively provided with assembly openings, and the shape and the setting position of the assembly openings are not limited in the embodiments of the present application, which can be set according to the assembly of the rotating shaft mechanism 2. Figure 7 The hole-shaped assembly opening shown in the figure is only an example and is not limited in any way.

[0157] In some embodiments, as shown in Figure 7 , the first flat plate 45 and the second flat plate 46 are in a sheet structure, and the first flat plate 45 and the second flat plate 46 are connected to the rotating members through the protruding parts. Of course, the first flat plate 45 and the second flat plate 46 can also be provided with notches to meet the needs of different application scenarios.

[0158] Referring to Figure 6 and Figure 7 , in some embodiments, the rotating assembly 40 has an upper surface a1 and a lower surface a2, the upper surface a1 is the surface of the rotating assembly 40 facing the inner shaft 20, and the lower surface a2 is the surface of the rotating assembly 40 facing the outer shaft 30. Figure 6 and Figure 7 are respectively shown from the upper surface a1 side and the lower surface a2 side of the rotating assembly 40.

[0159] Next, the structure of the linkage structure 47 will be described.

[0160] Figure 8 A partial enlarged view of a linkage structure provided in the embodiments of the present application.

[0161] As shown in Figure 8 , in some embodiments, the linkage structure 47 includes a rotating member 473, a first translating member 471 and a second translating member 472.

[0162] The first translating member 471 is slidingly connected to the inner shaft 20 and is clamped to the first swing arm 40A, the second translating member 472 is slidingly connected to the inner shaft 20 and is clamped to the second swing arm 40B, the rotating member 473 is connected to the first translating member 471 and the second translating member 472 and is rotatably connected to the inner shaft 20, and the rotation axis of the rotating member 473 is parallel to the first direction Z.

[0163] When the first swing arm 40A rotates, it causes the first translation member 471 to slide in a direction parallel to the second direction X. When the second swing arm 40B rotates, it causes the second translation member 472 to slide in a direction parallel to the second direction X. Regardless of whether the first swing arm 40A and the second swing arm 40B rotate relative to each other or in opposite directions, the sliding directions of the first translation member 471 and the second translation member 472 are always opposite. For example, during the transition of the rotating shaft mechanism 2 from a flattened state to a folded state, the first swing arm 40A and the second swing arm 40B rotate relative to each other along the rotation axis of the rotating shaft mechanism, causing the first translation member 471 and the second translation member 472 to slide in opposite directions in a direction parallel to the second direction X. Similarly, during the transition of the rotating shaft mechanism 2 from a folded state to a flattened state, the first swing arm 40A and the second swing arm 40B rotate relative to each other along the rotation axis of the rotating shaft mechanism, causing the first translation member 471 and the second translation member 472 to slide in opposite directions in a direction parallel to the second direction X. When the first translation member 471 and the second translation member 472 slide, they can drive the rotating member 473 to rotate. The rotating member 473 can slide synchronously with the first translation member 471 and the second translation member 472.

[0164] The axis of rotation of the rotating component 473 is parallel to the first direction Z, or it can be understood that the rotating component 473 rotates in a plane parallel to the second direction X and the third direction Y.

[0165] In some embodiments, the first translation member 471 is located on the side of the rotating member 473 near the first rotating member 41. The first translation member 471 is connected to the first rotating member 41, and the first rotating member 41 can drive the first translation member 471 to slide in a direction parallel to the second direction X. The first plate 45 drives the first rotating member 41 to rotate, thereby driving the first translation member 471 to slide, so that the first swing arm 40A drives the first translation member 471 to slide.

[0166] The second translation member 472 is located on the side of the rotating member 473 near the second rotating member 42. The second translation member 472 is connected to the second rotating member 42, and the second rotating member 42 can drive the second translation member 472 to slide in a direction parallel to the second direction X. The second plate 46 drives the second rotating member 42 to rotate, thereby driving the second translation member 472 to slide, so that the second swing arm 40B drives the second translation member 472 to slide.

[0167] For example, when the rotating shaft mechanism 2 rotates from the flattened state to the folded state, in Figure 8 From the perspective shown, the first plate 45 drives the first rotating member 41 to rotate counterclockwise, and the first rotating member 41 drives the first translating member 471 to move from left to right. The second plate 46 drives the second rotating member 42 to rotate clockwise, and the second rotating member 42 drives the second translating member 472 to move from right to left.

[0168] When the hinge mechanism 2 is rotated from the folded state to the unfolded state, the first flat plate drives the first rotating member 41 to rotate clockwise, and the first rotating member 41 drives the first translating member 471 to move from right to left. The second flat plate 46 drives the second rotating member 42 to rotate counterclockwise, and the second rotating member 42 drives the second translating member 472 to move from left to right.

[0169] During the rotation of the hinge mechanism 2, the first rotating member 41 and the second rotating member 42 always rotate in the opposite direction of the clock track, thereby driving the first translating member 471 and the second translating member 472 to always move in parallel and in the opposite direction.

[0170] Next, the connection mode of the first translating member 471 and the first rotating member 41, and the connection mode of the second translating member 472 and the second rotating member 42 are schematically described.

[0171] Figure 9A 、 Figure 9B and Figure 9C a cooperation process of a translating member and a rotating member provided by the embodiment of the application.

[0172] As shown in Figure 9A some embodiments, the first translating member 471 includes a first recessed portion 4711 facing away from the inner recess of the first rotating member 41, and the first rotating member 41 includes a first protruding portion 411 protruding toward the first translating member 471. The first protruding portion 411 extends into the first recessed portion 4711 and is connected in cooperation with the first recessed portion 4711, so as to realize the sliding of the first translating member 471 during the rotation of the first rotating member 41.

[0173] The first protruding portion 411 and other parts in the first translating member 471 can be an integral structure, or the first protruding portion 411 and other parts in the first translating member 471 can be a fixedly connected separate structure, and the embodiment of the application does not limit this.

[0174] The embodiment of the application does not limit the specific structure of the first protruding portion 411. The first protruding portion 411 can be a regular structure or an irregular structure. For example, the first protruding portion 411 is a pin shaft, and the first recessed portion 4711 is a groove matched with the pin shaft.

[0175] After the first protruding portion 411 is clamped with the first recessed portion 4711, the surface of the first protruding portion 411 can be in contact with the inner wall of the first recessed portion 4711, or there can be a gap, and the embodiment of the application does not limit this.

[0176] The structure of the cooperation of the first protruding portion 411 and the first recessed portion 4711 realizes the mechanical connection of the first translating member 471 and the first rotating member 41, and has the advantages of simple structure, simple process and easy implementation.

[0177] AsFigure 9A As shown, in some embodiments, the first protrusion 411 is located at the end of the first rotating member 41 away from the first flat plate 45. When the rotating shaft mechanism 2 is in a flattened state, the first protrusion 411 is disposed near the fourth rotating member 44 and protrudes toward the first translating member 471.

[0178] Correspondingly, the first recess 4711 is located at the end of the first translation member 471 near the first plate 45, and the main part of the first translation member 471 is located at the end of the first recess 4711 near the second plate 46.

[0179] Based on this structure, from Figure 9A From a mid-range perspective, during the folding process of the rotating shaft mechanism 2, the first plate 45 drives the first rotating component 41 to rotate counterclockwise, thereby causing the first translation component 471 to move from the side where the second plate 46 is located to the side where the first plate 45 is located. Figure 9B As shown, as the rotating shaft mechanism 2 rotates, the first translational member 471 gradually slides. Figure 9C As shown, when the rotating shaft mechanism 2 is rotated to the folded state, the first translation component 471 slides to the side close to the first plate 45.

[0180] By setting the first protrusion 411 at the inner end of the first rotating member 41 and the first recess 4711 at the outer end of the first translation member 471, the first translation member 471 can move a large amount during the folding process of the rotating shaft mechanism 2, so that the first rotating member 471 can be rotated at all angles with a more compact structure, and the space requirement of the rotating shaft mechanism 2 in the second direction X is relatively small, which helps to achieve the compactness of the rotating shaft mechanism 2.

[0181] Accordingly, in some embodiments, such as Figure 9A As shown, the second translation member 472 includes a second recessed portion 4721 that is recessed away from the second rotating member 42, and the second rotating member 42 includes a second protruding portion 421 that protrudes toward the second translation member 472. The second protruding portion 421 extends into the second recessed portion 4721 and engages with the second recessed portion 4721 to enable the second rotating member 42 to slide during rotation.

[0182] The second protrusion 421 and the other parts of the second translation member 472 can be integrally formed structures, or the second protrusion 421 and the other parts of the second translation member 472 can be separate structures that are fixedly connected. This application embodiment does not limit this.

[0183] The specific structure of the second protrusion 421 is not limited in this embodiment. The second protrusion 421 can be a regular structure or an irregular structure. For example, the second protrusion 421 is a pin, and the second recess 4721 is a groove that matches the pin.

[0184] After the second protruding part 421 is clamped with the second recessed part 4721, the surface of the second protruding part 421 can be in contact with the inner wall of the second recessed part 4721, or there can be a gap, which is not limited in the embodiments of the present application.

[0185] The structure of the second protruding part 421 cooperating with the second recessed part 4721 realizes the mechanical connection between the second translation member 472 and the second rotating member 42, which is simple in structure and process and easy to realize.

[0186] As shown in the drawings, Figure 9A In some embodiments, the second protruding part 421 is located at the end of the second rotating member 42 away from the second flat plate 46, and the second recessed part 4721 is located at the end of the second translation member 472 close to the second flat plate 46. When the rotating shaft mechanism 2 is in the unfolded state, the second protruding part 421 is close to the third rotating member 43 and protrudes towards the second translation member 472.

[0187] Correspondingly, the second recessed part 4721 is located at the end of the second translation member 472 close to the second flat plate 46, and most of the second translation member 472 is located at the end of the second recessed part 4721 close to the first flat plate 45.

[0188] Based on this structure, from the perspective of Figure 9A During the folding process of the rotating shaft mechanism 2, the second flat plate 46 drives the second rotating member 42 to rotate clockwise, thereby driving the second translation member 472 to move from the side where the first flat plate 45 is located to the side where the second flat plate 46 is located. As shown in the drawings, Figure 9B As the rotating shaft mechanism 2 rotates, the second translation member 472 gradually slides. As shown in the drawings, Figure 9C When the rotating shaft mechanism 2 rotates to the folded state, the second translation member 472 slides to the side close to the second flat plate 46.

[0189] By setting the second protruding part 421 at the inner end of the second rotating member 42 and setting the second recessed part 4721 at the outer end of the second translation member 472, the movement of the second translation member 472 can be larger during the folding process of the rotating shaft mechanism 2, so that full-angle rotation of the second rotating member 42 is realized with a delicate structure, and the space requirement in the second direction X of the rotating shaft mechanism 2 is relatively small, which is helpful to realize the delicacy of the rotating shaft mechanism 2.

[0190] As shown in the drawings, Figure 9A In some embodiments, the rotating member 473 includes a gear, the first translation member 471 includes a first rack, and the second translation member 472 includes a second rack, and the first rack and the second rack are respectively used for meshing with the gear.

[0191] The structure of the gear and the rack is adopted to realize the synchronization of the rotating member to the first translation member 471 and the second translation member 472, which is simple in structure and easy to realize.

[0192] The rotating shaft mechanism 2 provided by the embodiments of the present application, the linkage structure 47 comprises a first translation member 471, a second translation member 472 and a rotating member 473, the first translation member 471 and the second translation member 472 always move along the width direction (the second direction X) of the rotating shaft mechanism 2, and the size requirement of the first translation member 471 and the second translation member 472 in the thickness direction (the first direction Z) of the rotating shaft mechanism 2 is the thickness of the first translation member 471 and the second translation member 472. At the same time, the axial direction of the rotating member 473 is the thickness direction of the rotating shaft mechanism 2. That is, the rotating member 473 is horizontally placed in the rotating shaft mechanism 2. Then, the size requirement of the rotating member 473 in the thickness direction of the rotating shaft mechanism 2 is also the thickness of the rotating member 473 in the axial direction. Since the radial direction of the rotating member in the linkage structure is parallel to the first direction Z, compared with the requirement of the thickness of the linkage structure with the outer diameter of the linkage structure, the thickness requirement of the linkage structure 47 provided by the embodiments of the present application is obviously reduced, which is suitable for the flat space of the rotating shaft mechanism 2, the structure is simple, the virtual position is small, and the thickness of the rotating shaft mechanism 2 is thin.

[0193] The rotating shaft mechanism 2 provided by the present application may need to hover when the rotating shaft mechanism 2 is at a certain angle during folding to improve the user experience. In some embodiments, the rotating shaft mechanism 2 provided by the present application further comprises a damping structure. For example, when the rotating shaft mechanism 2 is in the unfolded state, the damping structure is required to apply an unfolding force to the first flat plate 45 and the second flat plate 46, so that the rotating shaft mechanism 2 remains in the unfolded state. For another example, when the rotating shaft mechanism 2 is in the closed state, the damping structure is required to apply a closing force to the first flat plate 45 and the second flat plate 46, so that the rotating shaft mechanism 2 remains in the closed state.

[0194] Please refer back to Figure 6 In some embodiments, the rotating assembly 40 further comprises a first damping member 60, the first damping member 60 is located on the side of the second rotating member 42 and the third rotating member 43 away from the linkage structure 47, and the first damping member 60 abuts against the second rotating member 42 and the third rotating member 43.

[0195] Or it is understood that the first damping member 60 is located between the second rotating member 42 and the third rotating member 43, and the fifth rotating member 48 and the sixth rotating member 49.

[0196] When the first flat plate 45 drives the third rotating member 43 to rotate and the second flat plate 46 drives the second rotating member 42 to rotate, the first damping member 60 is used to apply resistance to the first flat plate 45 and the second flat plate 46. For example, the first damping member 60 applies resistance to the first flat plate 45 through the third rotating member 43, so that the first flat plate 45 hovers at a certain position. The first damping member 60 synchronously applies resistance to the second flat plate 46 through the second rotating member 42, so that the second flat plate 46 hovers at a certain position.

[0197] By setting the first damping member 60 in the rotating assembly 40, when the first flat plate 45 and the second flat plate 46 rotate, the first flat plate 45 and the second flat plate 46 are applied with resistance by the first damping member 60, so that the first flat plate 45 and the second flat plate 46 can hover when rotating relative to the inner shaft 20. When the rotating shaft mechanism 2 is applied to the electronic device 1, because the first shell 11 is fixedly connected with the first flat plate 45, and the second shell 12 is fixedly connected with the second flat plate 46, the hovering demand in the folding process of the electronic device 1 can be met, and the user experience is improved.

[0198] Figure 10 A state diagram of the first damping member when the rotating shaft mechanism provided by the embodiment of the present application is in the unfolded state.

[0199] In some embodiments, as shown in FIG. 4A, the third rotating member 43 and the second rotating member 42 respectively have a first cam 431 and a second cam 422 away from the second protruding part 421 (or the linkage structure 47). Figure 10 Synchronously, the first damping member 60 includes a first connected cam 61, a first elastic part 62, and a first pin shaft 63.

[0200] The first connected cam 61 is rotatably installed at one end of the first pin shaft 63 close to the second protruding part 421 (or the linkage structure 47), and is engaged with the first cam 431 and the second cam 422. The first elastic part 62 is sleeved on the first pin shaft 63 and located at a side of the first connected cam 61 away from the first cam 431 and the second cam 422.

[0201] In some embodiments, the first pin shaft 63 includes a shaft part and an end part. The shaft part of the first pin shaft 63 extends along the third direction Y, and the first connected cam 61 is slidingly arranged at one end of the shaft part away from the end part. The diameter of the shaft part is smaller than the diameter of the first elastic part 62, and the first elastic part 62 is sleeved on the shaft part. The diameter of the end part is greater than the diameter of the first elastic part 62, and the first elastic part 62 is defined between the first connected cam 61 and the end part.

[0202] The elastic deformation direction of the first elastic part 62 is parallel to the extension direction of the first pin shaft 63. When the first elastic part 62 elastically deforms, the first connected cam 61 can be applied with a reverse elastic force along the third direction Y. For example, the first elastic part 62 is in a compressed state when assembled into the first damping member 60.

[0203] The first damping member 60 can include one or more first pin shafts 63, and each first pin shaft 63 has a first elastic part 62 sleeved thereon.

[0204] For example, the first damping member 60 includes four first pin shafts 63. Figure 10

[0205] ​By setting multiple first pin shafts 63, the connected first connected cam 61 can be balanced and stably moved. In addition, since the first elastic part 62 is arranged on each first pin shaft 63, a greater extrusion force can be applied to the first cam 431 and the second cam 422, so as to stably keep the first flat plate 45 and the second flat plate 46 in the hovering position, and improve the opening and closing experience in the intermediate state.

[0206] When the first flat plate 45 rotates, the third rotating part 43 drives the first cam 431 to rotate, the first cam 431 slides relative to the first connected cam 61, and an extrusion force is applied to the first connected cam 61. The first connected cam 61 slides to the side where the first elastic part 62 is located, so as to apply a damping force to the first elastic part 62. The elastic property of the first elastic part 62 applies a resistance to the first flat plate 45 through a reverse path, so as to make the first flat plate 45 hover at a position.

[0207] Synchronously, when the second flat plate 46 rotates, a damping force is applied to the first elastic part 62, and the first elastic part 62 applies a resistance to the second flat plate 46 through a reverse path, so as to make the second flat plate 46 hover at a position.

[0208] With reference to the foregoing Figure 10 In some embodiments, the first damping part 60 further includes a first gasket 64 and a second gasket 65. The first gasket 64 and the second gasket 65 are arranged at two ends of the first elastic part 62, and the first gasket 64 and the second gasket 65 are sleeved on the first pin shaft 63.

[0209] For example, the first gasket 64 is arranged between the first elastic part 62 and the first connected cam 61, and the second gasket 65 is arranged between the first elastic part 62 and the end of the first pin shaft 63.

[0210] In some embodiments, the first damping part 60 includes multiple first pin shafts 63, the first gasket 64 sleeved on the multiple first pin shafts 63 can be a separate structure or an integrally formed structure, and the second gasket 65 sleeved on the multiple first pin shafts 63 can be a separate structure or an integrally formed structure.

[0211] By arranging the first gasket 64 and the second gasket 65 at two ends of the first elastic part 62, the stress of the first pin shaft and the first connected cam can be uniformly distributed.

[0212] In some embodiments, the first elastic part 62 is, for example, a spring. By using a spring as the first elastic part 62, the structure is simple and the cost is low.

[0213] Figure 11 When a pivot mechanism provided by an embodiment of the present application is in a flat state, Figure 10 FIG. 6 shows a damping principle structural diagram of the first damping part 60.

[0214] As shown in Figure 11 the first cam 431 has a first damping surface A1 and a second damping surface A2 opposite the first connecting cam 61, and the first connecting cam 61 has a third damping surface B1 and a fourth damping surface B2 opposite the first cam 431. In combination Figure 10 and Figure 11 When the third rotating member 43 drives the first cam 431 to rotate to the first position, the first damping surface A1 and the third damping surface B1 abut, and the first elastic part 62 is in the energy storage state, thereby generating a pressing force f1 on the first cam 431, which can make the first cam 431 generate a flattening force. In this way, since the first cam 431 is connected with the first flat plate 45, the first flat plate 45 will be subjected to the flattening force applied by the first cam 431, and the first flat plate 45 will keep the hovering flattening state under the action of the flattening force.

[0215] Synchronously, the second cam 422 has a fifth damping surface and a sixth damping surface opposite the first connecting cam 61, and the first connecting cam 61 has a seventh damping surface and an eighth damping surface opposite the second cam 422. When the second rotating member 42 drives the second cam 422 to rotate to the first position, the fifth damping surface and the seventh damping surface abut, and the first elastic part 62 is in the energy storage state, thereby generating a pressing force on the second cam 422, which can make the second cam 422 generate a flattening force. In this way, since the second cam 422 is connected with the second flat plate 46, the second flat plate 46 will be subjected to the flattening force applied by the second cam 422, and the second flat plate 46 will keep the hovering flattening state under the action of the flattening force.

[0216] Figure 12 A state diagram of the first damping member when the rotating shaft mechanism provided by the embodiment of the present application is in the folding state. Figure 13 A damping principle structure diagram of the first damping member provided by the embodiment of the present application. Figure 12

[0217] When the third rotating member 43 drives the first cam 431 to rotate to the second position, the second damping surface A2 and the fourth damping surface B2 abut, and the first elastic part 62 is in the energy storage state, thereby generating a pressing force f2 on the first cam 431, which can make the first cam 431 generate a folding force. In this way, since the first cam 431 is connected with the first flat plate 45, the first flat plate 45 will be subjected to the folding force applied by the first cam 431, and the first flat plate 45 will keep the hovering folding state under the action of the folding force.

[0218] ​Synchronously, when the second rotating member 42 drives the second cam 422 to rotate to the second position, the sixth damping surface abuts against the eighth damping surface, and the first elastic part 62 is in an energy storage state, thereby generating a compressive force on the second cam 422. This compressive force can cause the second cam 422 to generate a folding force. In this way, since the second cam 422 is connected to the second plate 46, the second plate 46 will be subjected to the folding force applied by the second cam 422. Under the action of the folding force, the second plate 46 maintains a suspended folded state.

[0219] Figure 14 This is a structural diagram illustrating the damping principle of the first damping element when the rotating shaft mechanism is in the intermediate angle state, as provided in an embodiment of this application.

[0220] like Figure 14 As shown, when the third rotating member 43 drives the first cam 431 to rotate to the third position, which is between the first and second positions, the convex surface of the first cam 431 abuts against the convex surface of the first integrated cam 61, and the first elastic part 62 is in an energy storage state, thereby generating a compressive force f3 on the first cam 431. The compressive force f3 can make the first cam 431 generate a holding force. In this way, since the first cam 431 is connected to the first plate 45, the first plate 45 will be subject to the holding force applied by the first cam 431. Under the action of the holding force, the first plate 45 is kept suspended in an intermediate angle state between the folded state and the flattened state.

[0221] Synchronously, when the second rotating member 42 drives the second cam 422 to rotate to the third position between the first and second positions, the convex surface of the second cam 422 abuts against the convex surface of the first integrated cam 61, and the first elastic part 62 is in an energy-storing state, thereby generating a compressive force on the second cam 422. This compressive force can cause the second cam 422 to generate a holding force. In this way, since the second cam 422 is connected to the second plate 46, the second plate 46 will be subject to the holding force applied by the second cam 422. Under the action of the holding force, the second plate 46 remains suspended in an intermediate angle state between the folded and flattened states.

[0222] By using the first integrated cam 61 to abut against the first cam 431 and the second cam 422, the first plate 45 and the second plate 46 can be subjected to damping force when they rotate, so that the first plate 45 and the second plate 46 are symmetrically in the hovering position.

[0223] Of course, in some embodiments, the first damping element 60 does not include the first integrated cam 61, but includes a third cam and a fourth cam, with the third cam abutting against the first cam 431 and the fourth cam abutting against the second cam 422. The damping principle of the third cam and the first cam 431 is the same as... Figure 11 and Figure 13The principle shown is the same, and the same fourth cam and the damping principle of the second cam 422 are also the same Figure 11 and Figure 13 The principle shown is the same.

[0224] In this case, the first damping member 60 includes at least two first pin shafts 63. One first pin shaft 63 is in sliding connection with the third cam, and the other first pin shaft 63 is in sliding connection with the fourth cam.

[0225] In some embodiments, the first swing arm 40A does not include the third rotating member 43, the second rotating member 42 has a second cam 422 on the side away from the second protruding portion 421, and the first damping member 60 is in abutment with the second cam 422 to apply resistance to the second flat plate 46.

[0226] Please continue to refer to Figure 6 In some embodiments, the rotating assembly 40 further includes a second damping member 70.

[0227] The second damping member 70 is in sliding connection with the fifth rotating member 48 and the sixth rotating member 49 on the side close to the first damping member 60, and when the first flat plate 45 drives the fifth rotating member 48 to rotate and the second flat plate 46 drives the sixth rotating member 49 to rotate, the second damping member 70 is used to apply resistance to the first flat plate 45 and the second flat plate 46.

[0228] In some embodiments, the structure of the second damping member 70 is the same as that of the first damping member 60, and the abutment mode of the second damping member 70 with the fifth rotating member 48 and the sixth rotating member 49 is the same as that of the first damping member 60 with the third rotating member 43 and the second rotating member 42. Please refer to the above related description, which will not be repeated here.

[0229] For example, the fifth rotating member 48 and the sixth rotating member 49 have a fifth cam and a sixth cam, respectively, on the side toward the first damping member 60.

[0230] Synchronously, the second damping member 70 includes a second integrated cam, a second elastic portion, and a second pin shaft.

[0231] The second integrated cam is sleeved on the second pin shaft on the side away from the first damping member 60 and is in abutment with the fifth cam and the sixth cam, and the second elastic portion is sleeved on the second pin shaft and is located on the side away from the fifth cam and the sixth cam of the second integrated cam.

[0232] In the embodiments of the present application, the inner shaft 20 and the outer shaft 30 included in the shaft mechanism 2 further include structures matched with the rotating assembly 40.

[0233] Please refer back to Figure 4A and Figure 4BIn some embodiments, the inner shaft 20 has a first circular-arc protrusion 21 and a second circular-arc protrusion 22 on the side facing the first rotating member 41 and the second rotating member 42, and the outer shaft 30 has a first circular-arc recess 31 and a second circular-arc recess 32 on the side facing the first rotating member 41 and the second rotating member 42.

[0234] The first circular-arc protrusion 21 and the first circular-arc recess 31 form a first circular-arc groove U1, and the second circular-arc protrusion 22 and the second circular-arc recess 32 form a second circular-arc groove U2. The first rotating member 41 can rotate in the first circular-arc groove U1, and the second rotating member 42 can rotate in the second circular-arc groove U2.

[0235] Based on this, in some embodiments, the first rotating member 41 and the second rotating member 42 are in a circular-arc structure.

[0236] The present application does not limit the circular-arc radii of the first circular-arc protrusion 21 and the second circular-arc protrusion 22, the first circular-arc recess 31 and the second circular-arc recess 32, the first rotating member 41 and the second rotating member 42, which can be set according to the size of the rotating shaft mechanism 2.

[0237] Synchronously, in some embodiments, the inner shaft 20 has a third circular-arc protrusion and a fourth circular-arc protrusion on the side facing the third rotating member 43 and the fourth rotating member 44, respectively, and the outer shaft 30 has a third circular-arc recess and a fourth circular-arc recess. The third circular-arc protrusion and the third circular-arc recess form a third circular-arc groove, and the fourth circular-arc protrusion and the fourth circular-arc recess form a fourth circular-arc groove. The third rotating member 43 can rotate in the third circular-arc groove, and the fourth rotating member 44 can rotate in the fourth circular-arc groove.

[0238] In some embodiments, the inner shaft 20 has a fifth circular-arc protrusion and a sixth circular-arc protrusion on the side facing the fifth rotating member 48 and the sixth rotating member 49, respectively, and the outer shaft 30 has a fifth circular-arc recess and a sixth circular-arc recess. The fifth circular-arc protrusion and the fifth circular-arc recess form a fifth circular-arc groove, and the sixth circular-arc protrusion and the sixth circular-arc recess form a sixth circular-arc groove. The fifth rotating member 48 can rotate in the fifth circular-arc groove, and the sixth rotating member 49 can rotate in the sixth circular-arc groove.

[0239] The first circular-arc groove U1, the second circular-arc groove U2, the third circular-arc groove, the fourth circular-arc groove, the fifth circular-arc groove, and the sixth circular-arc groove can be a quarter circular-arc, a third circular-arc, etc. Those skilled in the art can make appropriate adjustments to the specific parameters of the circular-arc grooves according to actual needs, and the present application does not make specific limitations.

[0240] In this embodiment, the first rotating member 41 engages with the first arc-shaped groove U1, the third rotating member 43 engages with the third arc-shaped groove, and the fifth rotating member 48 engages with the fifth arc-shaped groove to achieve rotation of the first plate 45 relative to the inner shaft 20. The second rotating member 42 engages with the second arc-shaped groove U2, the fourth rotating member 44 engages with the fourth arc-shaped groove, and the sixth rotating member 49 engages with the sixth arc-shaped groove to achieve rotation of the second plate 46 relative to the inner shaft 20.

[0241] In other embodiments, the first plate 45 and the inner shaft 20, and the second plate 46 and the inner shaft 20, may also be rotatably connected in other ways, such as by a pin connection. Therefore, the first rotating member 41 and the fourth rotating member 44 could, for example, be pins.

[0242] The following is a schematic description of the structure of the inner shaft 20 and the outer shaft 30, as well as the cooperation between the inner shaft 20 and the outer shaft 30 and the rotating assembly 40.

[0243] Here, we will first introduce the inner shaft 20 and the cooperation between the inner shaft 20 and the rotating assembly 40.

[0244] In some embodiments, such as Figure 5 As shown, the inner shaft 20 includes a first surface b1 facing away from the rotating assembly 40 and a second surface b2 facing the rotating assembly 40.

[0245] In some embodiments, the first surface b1 of the inner shaft 20 facing away from the rotating assembly 40 is a plane.

[0246] After the hinge mechanism 2 is applied to the electronic device 1, the display screen of the electronic device 1 is set on the first surface b1 of the inner shaft 20. By setting the first surface b1 of the inner shaft 20 as a plane, the hinge mechanism 2 is supported by a plane throughout the folding process, which protects the display screen and improves the screen reliability.

[0247] Regarding the outer contour structure of the inner shaft 20 Figure 5 This is for illustrative purposes only and is not intended to be limiting. The outer contour of the inner shaft 20 mates with the rotating assembly 40. The first plate 45 and the second plate 46 extend beyond the outer side of the inner shaft 20, and the inner shaft 20 does not affect the rotation of the first plate 45 and the second plate 46.

[0248] Figure 15 This is a schematic diagram of the structure of an inner shaft provided in an embodiment of this application. Figure 16 This is a schematic diagram of an inner shaft and rotating assembly in a flattened state after assembly, as provided in an embodiment of this application. Figure 17 This is a schematic diagram of an inner shaft and rotating assembly in a folded state after assembly, as provided in an embodiment of this application.

[0249] In some embodiments, combined withFigure 15 , Figure 16 as well as Figure 17 As shown, the second surface b2 of the inner shaft 20 facing the rotating assembly 40 has a first arc-shaped protrusion 21 and a second arc-shaped protrusion 22. The position and shape of the first arc-shaped protrusion 21 are matched with the first rotating member 41, and the position and shape of the second arc-shaped protrusion 22 are matched with the second rotating member 42.

[0250] The second surface b2 of the inner shaft 20 may also have a third arc-shaped protrusion 23 and a fourth arc-shaped protrusion 24. The position and shape of the third arc-shaped protrusion 23 are matched with the third rotating member 43, and the position and shape of the fourth arc-shaped protrusion 24 are matched with the fourth rotating member 44.

[0251] The second surface b2 of the inner shaft 20 may also have a fifth arc-shaped protrusion 25 and a sixth arc-shaped protrusion 26. The position and shape of the fifth arc-shaped protrusion 25 are matched with the fifth rotating member 48, and the position and shape of the sixth arc-shaped protrusion 26 are matched with the sixth rotating member 49.

[0252] In some embodiments, the inner shaft 20 further includes a first assembly opening 20a between the first arc-shaped protrusion 21 and the second arc-shaped protrusion 22, and a first assembly opening 20a between the third arc-shaped protrusion 23 and the fourth arc-shaped protrusion 24. The first assembly opening 20a is used for assembly connection with the outer shaft 30. In the rotating assembly 40, a third assembly opening 40a is provided at corresponding positions of the first rotating member 41 and the fourth rotating member 44, and a third assembly opening 40a is provided at corresponding positions of the third rotating member 43 and the second rotating member 42. After the rotating shaft mechanism 2 is assembled, the first assembly opening 20a can extend into the third assembly opening 40a.

[0253] In some embodiments, the inner shaft 20 further includes an end appearance member 20b, which is connected to the first arc-shaped protrusion 21.

[0254] By setting the end appearance part 20b, the internal structure of the rotating shaft mechanism 2 can be covered by the end appearance part 20b. Whether the rotating shaft mechanism 2 is in a folded state or a flat state, the internal structure is hidden, and the overall structure has a complete shape and good aesthetics.

[0255] In some embodiments, the other end of the inner shaft 20 is also provided with an end appearance part 20b. Figure 15 It is not shown in the text.

[0256] The embodiments of this application do not limit the structure and shape of the end appearance component 20b. Figure 15 This is just an illustration.

[0257] Please continue to refer to this. Figure 15In some embodiments, the inner shaft 20 is provided with a first guide portion 20c on the side facing the second surface b2 of the linkage structure 47. The first guide portion 20c can guide the first translation member 471 in the linkage structure 47 to move in a direction parallel to the second direction X.

[0258] In some embodiments, the inner shaft 20 is provided with a second guide portion 20d on the side where the second surface b2 of the linkage structure 47 is located. The second guide portion 20d can guide the second translation member 472 to move in a direction parallel to the second direction X.

[0259] By setting the first guide portion 20c and the second guide portion 20d, the first translation member 471 and the second translation member 472 can move in a balanced and stable linear motion along the second direction X.

[0260] In some embodiments, the first guide portion 20c is a groove extending along the second direction X.

[0261] In other embodiments, the first guide portion 20c is a protrusion extending along the second direction X.

[0262] In some embodiments, such as Figure 15 As shown, the first guide portion 20c includes a first guide groove 20c1 and a first guide protrusion 20c2 extending along the second direction X, and the first guide groove 20c1 and the first guide protrusion 20c2 are arranged sequentially along the second direction X.

[0263] By setting the first guide portion 20c to a structure in which part is the first guide groove 20c1 and part is the first guide protrusion 20c2, it is possible to avoid thinning the inner shaft 20 too much at the position where the first conductive portion 20c is provided, thus affecting the rigidity of the inner shaft 20, and it is also possible to avoid affecting the sliding of the first rotating member 41 and the first translating member 471.

[0264] So, combining Figure 8 , Figure 15 , Figure 16 and Figure 17 As shown, the first translation member 471 has a groove 471a on the side facing the first guide protrusion 20c2, and the first guide protrusion 20c2 can extend into the groove 471a. The first guide protrusion 20c2 cooperates with the groove 471a. When the first translation member 471 moves along the second direction X, the groove 471a slides on the first guide protrusion 20c2, and the first guide protrusion 20c2 serves as a guide for the first translation member 471.

[0265] In some embodiments, the first guide groove 20c1 is arranged adjacent to the first rotating member 41 (the first arc-shaped protruding part 21) along the third direction Y, and is arranged close to the first flat plate 45. The first guide protruding part 20c2 is arranged adjacent to the fourth rotating member 44 (the fourth arc-shaped protruding part 24) along the third direction Y, and is arranged close to the second flat plate 46.

[0266] In this way, when the first rotating member 41 includes the first protruding part 411, the first guide groove 20c1 does not affect the rotation of the first protruding part 411.

[0267] In some embodiments, the surface of the groove arm of the first arc-shaped protruding part 21 is curved, and the trajectory of the curved surface matches the rotation trajectory of the first protruding part 411. In this way, the groove arm of the first guide groove 20c1 can provide a supporting force to the first protruding part 411 to improve the stability of the first protruding part 411 during rotation, and avoid the first protruding part 411 from shaking and affecting folding.

[0268] In some embodiments, the structure of the second guide part 20d is the same as that of the first guide part 20c.

[0269] For example, the second guide part 20d includes a second guide groove and a second guide protruding part extending along the second direction X. For example, the second guide groove is arranged adjacent to the second rotating member 42 (the second arc-shaped protruding part 22) along the second direction X, and is arranged close to the second flat plate 46. The second guide protruding part is arranged adjacent to the third rotating member 43 (the third arc-shaped protruding part 23) along the second direction X, and is arranged close to the first flat plate 45.

[0270] Correspondingly, as shown in Figure 8 , the second translating member 472 is provided with a groove 472a on the side facing the first surface a1 of the first guide part 20c, and the second guide protruding part can extend into the groove 472a.

[0271] Please continue to refer to Figure 15 In some embodiments, the inner shaft 20 is provided with a first limiting part 20e and a second limiting part 20f on the side facing the second surface b2 of the linkage structure 47.

[0272] The first limiting part 20e and the second limiting part 20f are arranged between the first guide part 20c and the second guide part 20d, and are located on both sides of the inner shaft 20 along the second direction X, as shown in Figure 16 and Figure 17 After the rotating assembly 40 is assembled with the inner shaft 20, the first limiting part 20e and the second limiting part 20f are located on both sides of the rotating member 473.

[0273] The surface of the first limiting part 20e facing the second limiting part 20f and the surface of the second limiting part 20f facing the first limiting part 20e are both arc surfaces, that is, the surfaces of the first limiting part 20e and the second limiting part 20f facing the rotating piece 473 are arc surfaces. The first limiting part 20e and the second limiting part 20f match the rotation track of the rotating piece 473, and limit the rotating piece 473 between them to limit the rotation track of the rotating piece 473.

[0274] The arc surfaces of the first limiting part 20e and the second limiting part 20f facing the rotating piece 473 can be one-fourth of a circular arc surface, one-third of a circular arc surface, or other circular arc surfaces with other radian.

[0275] In addition, Figure 15 The shapes of the first limiting part 20e and the second limiting part 20f shown in the figure are only one example and are not limited in any way, as long as the surfaces of the first limiting part 20e and the second limiting part 20f facing the rotating piece 473 match the rotation track of the rotating piece 473.

[0276] Please continue to refer to Figures 15-17 In some embodiments, a first assembly opening 20a is provided between the first limiting part 20e and the second limiting part 20f, and the rotating piece 473 is sleeved at the first assembly opening 20a.

[0277] The outer contour shape of the first assembly opening 20a at this position matches the shape of the reserved hole of the rotating piece 473. For example, the first assembly opening 20a is a cylindrical hole. After the assembly screw is inserted into the first assembly opening 20a, the rotating piece 473 is sleeved on the assembly screw.

[0278] In some embodiments, the inner shaft 20 is provided with a first matching part 20h on the side facing the second surface b2 of the linkage structure 47, and the first damping piece 60 is arranged in cooperation with the first matching part 20h.

[0279] For example, the first matching part 20h includes a first cam matching part 20h1 and a first elastic piece matching part 20h2. The first cam matching part 20h1 matches the shape of the first connected cam 61, and the first elastic piece matching part 20h2 matches the shape of the first elastic part 62 and the first pin shaft 63. The end of the first pin shaft 63 away from the first connected cam 61 abuts in the first elastic piece matching part 20h2.

[0280] In the embodiments of the present application, the first damping piece 60 is taken as an example including four first elastic parts 62, and the first elastic piece matching part 20h2 is taken as an example including four grooves.

[0281] In some embodiments, the inner shaft 20 is provided with a second matching portion 20i on the side where the second surface b2 of the linkage structure 47 is located, and the second damping member 70 is arranged in cooperation with the second matching portion 20i.

[0282] The structure of the second matching portion 20i can refer to that of the first matching portion 20h, which is not limited in the embodiments of the present application.

[0283] In some embodiments, a first assembly opening 20a is further arranged between the first matching portion 20h and the second matching portion 20i. Of course, the first assembly opening 20a on the inner shaft 20 is reasonably arranged according to the structure of the rotating shaft mechanism 2.

[0284] Figure 18 A structural schematic diagram of an inner shaft provided in the embodiments of the present application is shown.

[0285] Figure 15 A structural schematic diagram of the inner shaft 20 cooperating with a rotating assembly 40 is shown. In the case where the rotating shaft mechanism 2 includes a plurality of rotating assemblies 40, as shown in Figure 18 The inner shaft 20 can include a plurality of shaft segments 27 matched with the rotating assemblies 40.

[0286] In some embodiments, as shown in Figure 18 The inner shaft 20 further includes a first connecting portion 20j, and the adjacent two shaft segments 27 are connected through the first connecting portion 20j. The structure of the first connecting portion 20j is not limited in the embodiments of the present application, and can be reasonably arranged in combination with the structure of the rotating shaft mechanism 2.

[0287] For example, the first connecting portion 20j includes the first assembly opening 20a.

[0288] In some embodiments, the first assembly openings 20a on the inner shaft 20 are arranged in pairs. Alternatively, the first assembly openings 20a on the inner shaft 20 are located on the center line of the inner shaft 20.

[0289] In this way, after the inner shaft 20 and the outer shaft 30 are assembled, the force applied at the position of the first assembly opening 20a is symmetrical for the entire rotating shaft mechanism 2, so as to improve the symmetry of the first plate 45 and the second plate 46.

[0290] Next, the structure of the outer shaft 30 and the cooperation of the outer shaft 30 with the rotating assembly 40 are described.

[0291] In some embodiments, as shown in Figure 5 The outer shaft 30 includes a first surface c1 facing the rotating assembly 40 and a second surface c2 away from the rotating assembly 40.

[0292] Figure 19A A structural schematic diagram of an outer shaft provided in the embodiments of the present application is shown.

[0293] In some embodiments, as shown in Figure 19A The outer shaft 30 has a first circular-arc concave portion 31 and a second circular-arc concave portion 32 on the first surface c1 facing the rotating assembly 40. The first circular-arc concave portion 31 is configured to cooperate with the first rotating member 41. The second circular-arc concave portion 32 is configured to cooperate with the second rotating member 42.

[0294] The first circular-arc concave portion 31 and the first circular-arc convex portion 21 are stacked to form a first circular-arc groove, in which the first rotating member 41 rotates. The second circular-arc concave portion 32 and the second circular-arc convex portion 22 are stacked to form a second circular-arc groove, in which the second rotating member 42 rotates.

[0295] The outer shaft 30 has a third circular-arc concave portion 33 and a fourth circular-arc concave portion 34 on the first surface c1 facing the rotating assembly 40. The third circular-arc concave portion 33 is configured to cooperate with the third rotating member 43. The fourth circular-arc concave portion 34 is configured to cooperate with the fourth rotating member 44.

[0296] The outer shaft 30 has a fifth circular-arc concave portion 35 and a sixth circular-arc concave portion 36 on the first surface c1. The fifth circular-arc concave portion 35 is configured to cooperate with the fifth rotating member 48. The sixth circular-arc concave portion 36 is configured to cooperate with the sixth rotating member 49.

[0297] In some embodiments, the outer shaft 30 further comprises a second assembly opening 30a between the first circular-arc concave portion 31 and the fourth circular-arc concave portion 34. The third circular-arc concave portion 33 and the second circular-arc concave portion 32 also have a second assembly opening 30a. The second assembly opening 30a is configured to cooperate with the inner shaft 20.

[0298] In some embodiments, the outer shaft 30 further comprises an end portion cooperating member 30b connected to the first circular-arc concave portion 31 and the second circular-arc concave portion 32. The end portion cooperating member 30b is configured to cooperate with the end portion appearance member 20b of the inner shaft 20.

[0299] In some embodiments, the outer shaft 30 has a first translation member matching portion 30c and a second translation member matching portion 30d on the side of the first surface c1 facing the linkage structure 47. The first translation member matching portion 30c is configured to cooperate with the first conductive portion 20c and leave enough space for the movement of the first translation member 471. The second translation member matching portion 30d is configured to cooperate with the second conductive portion 20d and leave enough space for the movement of the second translation member 472.

[0300] For example, along the second direction X, the partial area of the first translation piece matching part 30c is a plane, and the partial area is a groove. Similarly, along the second direction X, the partial area of the second translation piece matching part 30d is a plane, and the partial area is a groove.

[0301] In some embodiments, the outer shaft 30 is provided with a third limiting part 30e and a fourth limiting part 30f on the side where the first surface c1 of the linkage structure 47 is located.

[0302] The third limiting part 30e and the fourth limiting part 30f are arranged between the first translation piece matching part 30c and the second translation piece matching part 30d, and along the second direction X, the third limiting part 30e and the fourth limiting part 30f are located on both sides of the outer shaft 30. After the rotating assembly 40 is assembled with the outer shaft 30, the third limiting part 30e and the fourth limiting part 30f are located on both sides of the rotating piece 473.

[0303] The surface of the third limiting part 30e facing the fourth limiting part 30f and the surface of the fourth limiting part 30f facing the third limiting part 30e are both arc surfaces, that is, the surfaces of the third limiting part 30e and the fourth limiting part 30f facing the rotating piece 473 are arc surfaces. The third limiting part 30e and the fourth limiting part 30f match the rotation track of the rotating piece 473, and limit the rotating piece 473 between them to limit the rotation track of the rotating piece 473.

[0304] The arc surfaces of the third limiting part 30e and the fourth limiting part 30f facing the rotating piece 473 can be one-fourth of a circular arc surface, or one-third of a circular arc surface, or other radian circular arc surfaces.

[0305] In addition, Figure 19A The shape of the third limiting part 30e and the fourth limiting part 30f shown in the figure is only one example, and is not limited in any way, as long as the surface of the third limiting part 30e and the fourth limiting part 30f facing the rotating piece 473 matches the rotation track of the rotating piece 473.

[0306] Please continue to refer to Figure 19A In some embodiments, a second assembly opening 30a is arranged between the third limiting part 30e and the fourth limiting part 30f, and the rotating piece 473 Figure 19A (not shown in the figure) is sleeved at the second assembly opening 30a.

[0307] The outer contour shape of the second assembly opening 30a at this position matches the shape of the reserved hole of the rotating piece 473, for example, the second assembly opening 30a is a cylindrical hole. After the assembly screw is inserted into the second assembly opening 30a, the rotating piece 473 is sleeved on the assembly screw.

[0308] Please continue to refer to Figure 19AIn some embodiments, the outer shaft 30 is provided with a third matching part 30h on the side facing the first surface c1 of the linkage structure 47. As shown in Figure 19B The first damping part 60 is placed in the third matching part 30h and is matched with the third matching part 30h. The first damping part 60 is also matched with the first matching part 20h in the inner shaft 20. The first matching part 20h and the third matching part 30h are matched to form a matched space, and the first damping part 60 can rotate in the matched space.

[0309] In some embodiments, the outer shaft 30 is provided with a fourth matching part 30i on the side facing the first surface c1 of the linkage structure 47, and the second damping part 70 is matched with the fourth matching part 30i. After the second matching part 20i and the fourth matching part 30i are matched, the second damping part 70 can rotate in the matched space. The structure can refer to the above description of the rotation of the first damping part 60 in the matched space.

[0310] In some embodiments, a second assembly opening 30a is further provided between the third matching part 30h and the fourth matching part 30i. Of course, the second assembly opening 30a on the outer shaft 30 is reasonably arranged according to the structure of the rotation shaft mechanism 2.

[0311] Figure 19A The structure schematic diagram of the outer shaft 30 matched with a rotating assembly 40 is shown. In the case that the rotation shaft mechanism 2 includes a plurality of rotating assemblies 40, the outer shaft 30 can include a plurality of shaft segments matched with the rotating assemblies 40.

[0312] In some embodiments, as shown in Figure 19A The outer shaft 30 further includes a second connecting part 30j, and the adjacent two shaft segments are connected through the first connecting part 30j. The structure of the second connecting part 30j is not limited in the embodiments of the present application, and can be reasonably arranged according to the structure of the rotation shaft mechanism 2.

[0313] For example, the second connecting part 30j includes the second assembly opening 30a.

[0314] Figure 20 The structure schematic diagram of the assembled inner shaft, rotating assembly and outer shaft provided in the embodiments of the present application is shown.

[0315] As shown in Figure 20 After the inner shaft 20 and the outer shaft 30 are assembled, most of the components in the rotating assembly 40 are located in the matched space formed by the inner shaft 20 and the outer shaft 30, and the first flat plate 45 and the second flat plate 46 in the rotating assembly 40 extend out of the matched space and can rotate relative to the inner shaft 20.

[0316] In some embodiments, as shown in Figure 5As shown, the rotating shaft mechanism 2 further comprises a decorative cover 50, which is located on the side of the rotating assembly 40 (or the outer shaft 30) away from the inner shaft 20 and connected with the inner shaft 20.

[0317] By arranging the decorative cover 50, the internal structure of the rotating shaft mechanism 2 is hidden in both the folded state and the unfolded state, improving the appearance of the rotating shaft mechanism 2. When the rotating shaft mechanism 2 is applied to the electronic device 1, the decorative cover of the rotating shaft mechanism 2 is exposed when the first shell 11 and the second shell 12 are in the folded state, which fills the gap between the first shell 11 and the second shell 12, thus ensuring the appearance of the electronic device 1. That is, whether the electronic device 1 is in the closed state or in the unfolded state, the internal structure is hidden, the appearance of the entire structure is complete, and the appearance is good.

[0318] The electronic device 1 provided in the embodiments of the present application can be applied to the electronic device 1 provided in the embodiments of the present application.

[0319] Figure 21 An exploded view of the electronic device 1 provided in the embodiments of the present application.

[0320] In some embodiments, taking a two-fold electronic device as an example, as shown in the figure, Figure 21 The electronic device 1 comprises a first shell 11, a second shell 12, a rotating shaft mechanism 2 and a display screen 3. The first shell 11 and the second shell 12 are located on both sides of the rotating shaft mechanism 2, and the rotating shaft mechanism 2 is connected with the first shell 11 and the second shell 12 respectively.

[0321] The embodiments of the present application do not limit the structure and shape of the first shell 11 and the second shell 12, and the structure of the shell in the related art is applicable to the embodiments of the present application.

[0322] In some embodiments, the first shell 11 is provided with a first recess 111, the second shell 12 is provided with a second recess 121, the first plate 45 of the rotating shaft mechanism 2 is installed in the first recess 111, and the second plate 46 is installed in the second recess 121.

[0323] In some embodiments, the rotating shaft mechanism 2 and the first recess 111 and the second recess 121 can be connected by screws or the like. For example, the first plate 45 in the rotating shaft mechanism 2 is connected with the first recess 111 by a screw, and the second plate 46 in the rotating shaft mechanism 2 is connected with the second recess 121 by a screw.

[0324] In some embodiments, the display screen 3 is arranged on the first housing 11 and the second housing 12. Then, the first housing 11 and the second housing 12 are also used to carry the display screen 3, i.e., the display screen 3 is fixedly connected (e.g., pasted) to the first housing 11 and the second housing 12, so that the display screen 3 is kept as flat as possible during use and the non-display surface of the display screen 3 is protected.

[0325] For example, the first housing 11 includes a first surface C1, the second housing 12 includes a second surface C2, the rotating shaft mechanism 2 includes a third surface C3 located on the side of the inner shaft 20 away from the rotating assembly 40, and the display screen 3 continuously covers the first surface C1, the third surface C3 and the second surface C2, and is fixedly connected to the first surface C1 of the first housing 11 and the second surface C2 of the second housing 12, respectively.

[0326] The display screen 3 is, for example, a flexible screen used to display images, videos, etc. The specific type of the flexible screen is not limited in the embodiments of the present application. For example, the flexible screen can be an active-matrix organic light-emitting diode (AMOLED) display screen. As a self-luminous display screen, the AMOLED display screen does not need to be provided with a back light module (BLM). Therefore, when the substrate substrate of the AMOLED display screen is made of a flexible resin material, such as polyethyleneterephthalate (PET), the AMOLED display screen can have a bendable characteristic. For example, the flexible screen can also be an organic light-emitting diode (OLED) display screen, a mini organic light-emitting diode (MiNi OLED) display screen, a micro organic light-emitting diode (Mic OLED) display screen, a micro organic light-emitting diode display screen, a quantum dot light emitting diode (QLED) display screen, etc.

[0327] As shown in FIG. 3, the display screen 3 can include a first portion 301, a second portion 302, and a third portion 303, a fourth portion 304 and a fifth portion 305 located therebetween. Figure 21

[0328] ​The first part 301 corresponds to and is connected to the first shell 11, the second part 22 corresponds to and is connected to the second shell 12, and the third part 303, the fourth part 304, and the fifth part 305 correspond to the rotating shaft mechanism 2. During folding of the rotating shaft mechanism 2, the third part 303, the fourth part 304, and the fifth part 305 are folded. During unfolding of the rotating shaft mechanism 2, the third part 303, the fourth part 304, and the fifth part 305 are unfolded.

[0329] For example, the third part 303 corresponds to the first flat plate 45 of the rotating shaft mechanism 2, the fourth part 304 corresponds to the second flat plate 46 of the rotating shaft mechanism 2, and the fifth part 305 corresponds to the inner shaft 20 of the rotating shaft mechanism 2.

[0330] In some embodiments, the third part 303 is not fixedly connected to the first flat plate 45, the fourth part 304 is not fixedly connected to the second flat plate 46, and the fifth part 305 is not fixedly connected to the inner shaft 20.

[0331] In other embodiments, the third part 303 is fixedly connected (for example, can be adhered) to the first flat plate 45, the fourth part 304 is fixedly connected (for example, can be adhered) to the second flat plate 46, and the fifth part 305 is not fixedly connected to the inner shaft 20.

[0332] In the embodiments of the present application, when the third part 303 is fixedly connected to the first flat plate 45 and the fourth part 304 is fixedly connected to the second flat plate 46, the electronic device 1 can make the third part 303 move with the first flat plate 45 and the fourth part 304 move with the second flat plate 46 during folding or unfolding, that is, the third part 303 has no relative movement with the first flat plate 45, and the fourth part 304 has no relative movement with the second flat plate 46, thereby improving the flatness of the third part 303 and the fourth part 304 of the display screen 3 during unfolding and folding, and reducing the risk of failure of the display screen 3.

[0333] Figure 22 And Figure 23 A use state diagram of an electronic device 1 provided in the embodiments of the present application is shown.

[0334] During use of the electronic device 1, the rotating shaft mechanism 2 at least includes Figure 22 an unfolded state shown in FIG. 2B, and Figure 23 a folded state shown in FIG. 2A.

[0335] In the unfolded state, the first shell 11 and the second shell 12 are located in substantially the same plane, so that the display screen 3 Figure 22When the display screen 3 is exposed, the user can operate the display screen 3, and the display screen 3 can display images or videos and the like to realize large-screen display and improve the user's viewing experience. When the hinge mechanism 2 is in the unfolded state, the first shell 11 and the second shell 12 can be relatively rotated towards each other (i.e., the first shell 11 and the second shell 12 are relatively rotated to approach each other), so as to drive the hinge mechanism 2 to be folded.

[0336] In the folding process, as shown in Figure 23 , the first shell 11 and the second shell 12 are relatively rotated away from the hinge mechanism 2, so that the electronic device 1 can be rotated to a folded state. The folded state can be folded to a certain angle as shown in Figure 23 , or can be folded to be completely closed as shown in Figure 24 .

[0337] As shown in Figure 24 , in the folded state of the closed state, the display screen 3 is located in the space surrounded by the first shell 11 and the second shell 12 after being folded. At this time, the display screen 3 is not exposed, and the user cannot operate the display screen 3, so that the electronic device 1 is convenient to store and carry. When the hinge mechanism 2 is in the folded state, the first shell 11 and the second shell 12 can be rotated (the rotation direction is opposite to that in the folding process), so as to drive the hinge mechanism 2 to be unfolded, so that the electronic device 1 is in the unfolded state as shown in Figure 22 . Therefore, in the present application, the hinge mechanism 2 is used to realize the folding and unfolding of the electronic device 1.

[0338] In the present application, the third surface C3 of the hinge mechanism 2 facing the display screen 3 is a plane, and the third surface C3 always supports the display screen 3 as a plane during the transition of the hinge mechanism 2 between the folded state and the unfolded state, which can protect the display screen 3 and improve the reliability of the display screen 3.

[0339] In the description of the present application, specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

[0340] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or replacements within the technical scope disclosed in the present application should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A rotation shaft mechanism characterized by comprising: The hinge mechanism comprises: a detachable inner shaft (20) and an outer shaft (30); a rotating assembly (40) arranged between the inner shaft (20) and the outer shaft (30); the rotating assembly (40) comprises a first swing arm (40A), a second swing arm (40B) and a linkage structure (47); the linkage structure (47) comprises a first translation member (471), a second translation member (472) and a rotating member (473); the first translation member (471) is in sliding connection with the inner shaft (20) and is in clamping connection with the first swing arm (40A); the second translation member (472) is in sliding connection with the inner shaft (20) and is in clamping connection with the second swing arm (40B); the rotating member (473) connects the first translation member (471) and the second translation member (472) and is in rotating connection with the inner shaft (20), and the rotating axis of the rotating member (473) is parallel to a first direction (Z), which is the direction from the inner shaft (20) to the outer shaft (30); during the transformation of the hinge mechanism from the flat state to the folded state, the first swing arm (40A) and the second swing arm (40B) rotate relative to the rotating axis of the hinge mechanism, driving the first translation member (471) and the second translation member (472) to slide in a direction parallel to a second direction (X) in a reverse direction; when the first translation member (471) and the second translation member (472) slide, the rotating member (473) is driven to rotate; the second direction (X) intersects with the direction of the rotating axis and the first direction (Z), and the first direction (Z) is perpendicular to the direction of the rotating axis.

2. The rotation shaft mechanism according to claim 1, wherein the first swing arm (40A) comprises a first rotating member (41) and a first flat plate (45) fixedly connected; the second swing arm (40B) comprises a second rotating member (42) and a second flat plate (46) fixedly connected; along the direction of the rotating axis, the first rotating member (41) and the second rotating member (42) are located on the two sides of the linkage structure (47); along the second direction (X), the first flat plate (45) and the second flat plate (46) are located on the two sides of the linkage structure (47); the first flat plate (45) can drive the first rotating member (41) to rotate relative to the inner shaft (20); and the second flat plate (46) can drive the second rotating member (42) to rotate relative to the inner shaft (20).

3. The hinge mechanism according to claim 2, wherein the first translation member (471) comprises a first recessed portion (4711) recessed away from the first rotating member (41); the first rotating member (41) comprises a first protruding portion (411) protruding toward the first translation member (471); the first protruding portion (411) is in matched connection with the first recessed portion (4711), so as to drive the first translation member (471) to move during the rotation of the first rotating member (41); and / or ​ The second translation member (472) comprises a second recess (4721) recessed in the second rotating member (42), and the second rotating member (42) comprises a second protrusion (421) protruding towards the second translation member (472), the second protrusion (421) is in matched connection with the second recess (4721), so as to drive the second translation member (472) to move during rotation of the second rotating member (42).

4. The rotating shaft mechanism according to claim 3, characterized in that, the first protrusion (411) is located at one end of the first rotating member (41) away from the first flat plate (45), and the first recess (4711) is located at one end of the first translation member (471) close to the first flat plate (45); and / or, the second protrusion (421) is located at one end of the second rotating member (42) away from the second flat plate (46), and the second recess (4721) is located at one end of the second translation member (472) close to the second flat plate (46).

5. The rotating shaft mechanism according to any one of claims 2-4, characterized in that, the first swing arm (40A) further comprises a third rotating member (43) fixedly connected with the first flat plate (45), the third rotating member (43) is arranged opposite to the first rotating member (41) on both sides of the linkage structure (47); the first flat plate (45) can also drive the third rotating member (43) to rotate relative to the inner shaft (20); the second swing arm (40B) further comprises a fourth rotating member (44) fixedly connected with the second flat plate (46), the fourth rotating member (44) is arranged opposite to the second rotating member (42) on both sides of the linkage structure (47); the second flat plate (46) can also drive the fourth rotating member (44) to rotate relative to the inner shaft (20).

6. The rotation axis mechanism according to any one of claims 1 to 4, characterized by The rotating member (473) comprises a gear, the first translation member (471) comprises a first rack, and the second translation member (472) comprises a second rack, the first rack and the second rack are respectively in meshing connection with the gear.

7. The rotating shaft mechanism according to any one of claims 1-4, characterized in that, the inner shaft (20) is provided with a first guide portion (20c) on the side facing the linkage structure (47), the first guide portion (20c) can guide the first translation member (471) to move along a direction parallel to the second direction (X); and / or, the inner shaft (20) is provided with a second guide portion (20d) on the side facing the linkage structure (47), the second guide portion (20d) can guide the second translation member (472) to move along a direction parallel to the second direction (X).

8. The rotation shaft mechanism according to claim 7, wherein In the case that the first swing arm (40A) comprises a first flat plate (45), and the second swing arm (40B) comprises a second flat plate (46), The first guide part (20c) comprises a first guide groove (20c1) and a first guide protrusion (20c2) extending along the second direction (X); the first guide groove (20c1) is arranged close to the first flat plate (45), and the first guide protrusion (20c2) is arranged close to the second flat plate (46); And / or, The second guide part (20d) comprises a second guide groove and a second guide protrusion extending along the second direction (X); the second guide groove is arranged close to the second flat plate (46), and the second guide protrusion is arranged close to the first flat plate (45).

9. The revolute mechanism according to any one of claims 1-4, wherein The inner shaft (20) is provided with a first limiting part (20e) and a second limiting part (20f) on the side facing the linkage structure (47); Along the second direction (X), the first limiting part (20e) and the second limiting part (20f) are located on the opposite sides of the rotating part (473); the surfaces of the first limiting part (20e) and the second limiting part (20f) facing the rotating part (473) are arc surfaces and are in sliding connection with the rotating part (473).

10. The revolute mechanism according to any one of claims 1-4, wherein The surface of the inner shaft (20) away from the rotating assembly (40) is a plane.

11. The revolute mechanism according to any one of claims 2-4, wherein The inner shaft (20) has a first circular-arc protrusion (21) and a second circular-arc protrusion (22) on the side facing the first rotating part (41) and the second rotating part (42), and the outer shaft (30) has a first circular-arc recess (31) and a second circular-arc recess (32) on the side facing the first rotating part (41) and the second rotating part (42); The first circular-arc protrusion (21) and the first circular-arc recess (31) form a first circular-arc groove (U1), and the second circular-arc protrusion (22) and the second circular-arc recess (32) form a second circular-arc groove (U2); the first rotating part (41) can move in the first circular-arc groove (U1), and the second rotating part (42) can move in the second circular-arc groove (U2).

12. The rotation shaft mechanism according to claim 5, wherein The rotating assembly (40) further comprises a first damping part (60) in sliding connection with the second rotating part (42) and the third rotating part (43) on the side away from the linkage structure (47); When the first flat plate (45) drives the third rotating part (43) to rotate and the second flat plate (46) drives the second rotating part (42) to rotate, the first damping part (60) is used for applying resistance to the first flat plate (45) and the second flat plate (46).

13. The rotation mechanism according to claim 12, wherein The third rotating part (43) and the second rotating part (42) have a first cam (431) and a second cam (422) respectively on the side away from the linkage structure (47); The first damping part (60) comprises a first connected cam (61), a first elastic part (62) and a first pin shaft (63); The first connected cam (61) is sleeved on the end of the first pin shaft (63) close to the linkage structure (47) and is in engagement with the first cam (431) and the second cam (422). The first connecting cam (61) is rotatably installed on the first pin shaft (63), and the first elastic part (62) is sleeved on the first pin shaft (63).

14. A pivot mechanism according to claim 12 or 13, wherein The first swing arm (40A) further comprises a fifth rotating part (48) fixedly connected with the first flat plate (45), which is arranged on the two sides of the first damping part (60) opposite to the third rotating part (43); the first flat plate (45) can also drive the fifth rotating part (48) to rotate relative to the inner shaft (20); The second swing arm (40B) further comprises a sixth rotating part (49) fixedly connected with the second flat plate (46), which is arranged on the two sides of the first damping part (60) opposite to the second rotating part (42); the second flat plate (46) can also drive the sixth rotating part (49) to rotate relative to the inner shaft (20).

15. The rotation mechanism according to claim 14, wherein The rotating assembly (40) further comprises a second damping part (70); The second damping part (70) is slidably connected to the fifth rotating part (48) and the sixth rotating part (49) on the side close to the first damping part (60); When the first flat plate (45) drives the fifth rotating part (48) to rotate and the second flat plate (46) drives the sixth rotating part (49) to rotate, the second damping part (70) is used to apply resistance to the first flat plate (45) and the second flat plate (46).

16. An electronic device, comprising: Comprise: A first housing (11), a second housing (12), a flexible screen and a rotating shaft mechanism (2) as claimed in any one of claims 1-15; The first housing (11) is detachably connected with the first swing arm (40A), and the second housing (12) is detachably connected with the second swing arm (40B); The first housing (11) comprises a first surface (B1), the second housing (12) comprises a second surface (B2), the rotating shaft mechanism (2) comprises a third surface (B3) located on the side of the inner shaft (20) away from the rotating assembly (40), the flexible screen continuously covers the first surface (B1), the third surface (B3) and the second surface (B2), and the flexible screen is fixedly connected with the first surface (B1) of the first housing (11) and the second surface (B2) of the second housing (12), respectively.

Images