Rotating shaft mechanism and electronic device

Abstract

The embodiment of the application provides a rotating shaft mechanism and electronic equipment. It relates to the technical field of electronic equipment with foldable screens. It is mainly used for improving the rotating shaft mechanism with the length capable of changing along with the folding of the flexible screen. The rotating shaft mechanism comprises a main body, a first door plate, a second door plate, an intermediate door plate, a first connecting rod assembly and a second connecting rod assembly. The first connecting rod assembly comprises a first shell connecting rod, a first gear connecting rod and a first width connecting rod. The rotating shaft mechanism further comprises a first meshing transmission structure. The first shell connecting rod, the first gear connecting rod, the first width connecting rod, the first door plate and the main body form a crank slider structure to drive the first door plate to rotate relative to the main body. The first gear connecting rod drives the intermediate door plate to move relative to the main body through the first meshing transmission structure. The rotating shaft mechanism is used for improving the use performance of the electronic equipment.

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 having the same. BACKGROUND

[0002] At present, foldable screens are widely used in mobile terminals, such as foldable mobile phones, foldable tablets, etc. In such mobile terminals, the foldable screen is mainly realized by combining a flexible screen and a rotating shaft mechanism. During use of the mobile terminal, repeated folding of the flexible screen may cause damage to the flexible screen.

[0003] In order to prolong the service life of the flexible screen and improve the reliability of the foldable electronic device, the folding part of the flexible screen needs to have a certain curvature deformation. In addition, the uniformity of the curvature of the folding part of the flexible screen also has an important influence on prolonging its service life. The key to realizing the curvature deformation of the folding part of the flexible screen and the uniformity of the curvature lies in the rotating shaft mechanism of the electronic device. Therefore, how to design the rotating shaft mechanism to improve the reliability of the flexible screen is a problem to be solved at present. SUMMARY

[0004] The present application provides a rotating shaft mechanism and an electronic device having the same, and mainly aims to provide a rotating shaft mechanism whose length can change with folding and unfolding of the electronic device.

[0005] To achieve the above-mentioned purpose, the embodiments of the present application adopt the following technical solutions:

[0006] In a first aspect, the present application provides a rotating shaft mechanism which can be applied in a foldable electronic device having a flexible screen, such as a foldable screen mobile phone, a foldable screen tablet computer, etc.

[0007] The rotating shaft mechanism comprises a main body, a first door plate, a second door plate, an intermediate door plate, a first connecting rod assembly and a second connecting rod assembly, the first door plate, the second door plate and the intermediate door plate are located on the same side of the main body, and the first door plate and the second door plate are oppositely arranged on the two sides of the intermediate door plate, the first connecting rod assembly and the second connecting rod assembly are oppositely arranged on the two sides of the main body; the rotating shaft mechanism further comprises a first meshing transmission structure and a second meshing transmission structure.

[0008] The first connecting rod assembly comprises a first shell connecting rod, a first gear connecting rod and a first auxiliary connecting rod; the first gear connecting rod is rotationally connected to the main body at one end close to the main body, and is slidingly connected to the first shell connecting rod at one end away from the main body; the first gear connecting rod is meshingly connected to the middle door panel at one end close to the middle door panel through a first meshing transmission structure; one end of the first door panel is rotationally connected to the first shell connecting rod, and the other end of the first door panel is rotationally connected to one end of the first auxiliary connecting rod; the other end of the first auxiliary connecting rod is rotationally connected to the main body, and the first auxiliary connecting rod is slidingly connected to the middle door panel. The second connecting rod assembly comprises a second shell connecting rod, a second gear connecting rod and a second auxiliary connecting rod; the second gear connecting rod is rotationally connected to the main body at one end close to the main body, and is slidingly connected to the second shell connecting rod at one end away from the main body; the second gear connecting rod is meshingly connected to the middle door panel at one end close to the middle door panel through a second meshing transmission structure; one end of the second door panel is rotationally connected to the second shell connecting rod, and the other end of the second door panel is rotationally connected to one end of the second auxiliary connecting rod; the other end of the second auxiliary connecting rod is rotationally connected to the main body, and the second auxiliary connecting rod is slidingly connected to the middle door panel.

[0009] When the first gear connecting rod and the second gear connecting rod rotate towards each other, the first gear connecting rod and the middle door panel meshingly connected, and the second gear connecting rod and the middle door panel meshingly connected, drive the middle door panel to move towards the main body; and the first shell connecting rod drives the first door panel to move away from the main body, and the second shell connecting rod drives the second door panel to move away from the main body.

[0010] When the first gear connecting rod and the second gear connecting rod rotate away from each other, the first gear connecting rod and the middle door panel meshingly connected, and the second gear connecting rod and the middle door panel meshingly connected, drive the middle door panel to move away from the main body; and the first shell connecting rod drives the first door panel to move towards the main body, and the second shell connecting rod drives the second door panel to move towards the main body.

[0011] In the rotating shaft mechanism provided in the present application, the first door panel and the second door panel located on both sides of the middle door panel can be driven by the corresponding first shell connecting rod and the second shell connecting rod to rotate reversely relative to the main body, so that when the flexible screen is arranged on the side of the first door panel, the middle door panel and the second door panel away from the main body, the electronic device can be folded when the first door panel and the second door panel rotate towards each other relative to the main body, and conversely, the electronic device can be unfolded when the first door panel and the second door panel rotate away from each other relative to the main body.

[0012] In addition, in the hinge mechanism provided in the present application, the intermediate door plate between the first door plate and the second door plate is movable relative to the main body. When the first door plate and the second door plate rotate towards each other, i.e. when the electronic device is switched from the flat state to the closed state, the intermediate door plate moves close to the main body. In this way, the length of the hinge mechanism can be increased, and the first door plate, the intermediate door plate and the second door plate will enclose a nearly triangular accommodating cavity. The flexible screen part in the folding state and close to the hinge mechanism will be in the formed accommodating cavity and will not be squeezed, thus avoiding the phenomenon that the flexible screen is damaged due to repeated folding and squeezing. When the first door plate and the second door plate rotate away from each other, i.e. when the electronic device is rotated from the closed state to the flat state, the intermediate door plate moves away from the main body. In this way, the length of the hinge mechanism which has been increased before can be shortened until the first door plate, the intermediate door plate and the second door plate are in the same plane, thereby supporting the flat flexible screen.

[0013] In addition, the movement of the intermediate door plate is achieved by the engagement transmission of the first gear connecting rod and the intermediate door plate, and the engagement transmission of the second gear connecting rod and the intermediate door plate. In this way, the engagement transmission can more accurately control the sinking and rising of the intermediate door plate, and thus accurately control the length of the hinge mechanism, so as to enclose a suitable accommodating space for the folded flexible screen.

[0014] In addition, in the hinge mechanism provided in the present application, the intermediate door plate between the first door plate and the second door plate is movable relative to the main body. When the first door plate and the second door plate rotate towards each other, i.e. when the electronic device is switched from the flat state to the closed state, the intermediate door plate moves close to the main body. In this way, the length of the hinge mechanism can be increased, and the first door plate, the intermediate door plate and the second door plate will enclose a nearly triangular accommodating cavity. The flexible screen part in the folding state and close to the hinge mechanism will be in the formed accommodating cavity and will not be squeezed, thus avoiding the phenomenon that the flexible screen is damaged due to repeated folding and squeezing. When the first door plate and the second door plate rotate away from each other, i.e. when the electronic device is rotated from the closed state to the flat state, the intermediate door plate moves away from the main body. In this way, the length of the hinge mechanism which has been increased before can be shortened until the first door plate, the intermediate door plate and the second door plate are in the same plane, thereby supporting the flat flexible screen.

[0015] In a possible implementation manner of the first aspect, the first engagement transmission structure comprises: a first gear formed at one end of the first gear connecting rod close to the intermediate door plate, and a first rack formed on the intermediate door plate and externally engaged with the first gear; and / or, the second engagement transmission structure comprises: a second gear formed at one end of the second gear connecting rod close to the intermediate door plate, and a second rack formed on the intermediate door plate and externally engaged with the second gear; wherein the rotation axis of the first gear is parallel to the rotation axis of the first gear connecting rod, the rotation axis of the second gear is parallel to the rotation axis of the second gear connecting rod, and the extension direction of the first rack and the extension direction of the second rack are both perpendicular to the length direction of the intermediate door plate.

[0016] That is, through the transmission cooperation of the gear and the rack, the up-down movement of the middle door plate relative to the main body is realized, the meshing transmission structure is simple in structure, small in space occupation, and stable in transmission.

[0017] In a possible implementation manner of the first aspect, the rotating shaft mechanism further includes a first screen pushing structure; when the first gear connecting rod and the second gear connecting rod rotate away from each other and drive the first door plate and the second door plate to rotate away from each other, the first screen pushing structure can exert a pushing force on the first shell connecting rod in a direction away from the first gear connecting rod.

[0018] Since the first screen pushing structure can exert a pushing force on the first shell connecting rod in a direction away from the first gear connecting rod, and the shell carrying the flexible screen is fixed relative to the first shell connecting rod, the first shell can be pushed by the first screen pushing structure, so that, for example, when the first door plate, the middle door plate and the second door plate are in the same plane, the flexible screen arranged on the first shell can be unfolded, the folding phenomenon of the flexible screen can be eliminated, the flatness of the flexible screen can be improved, and the user experience can be improved.

[0019] In a possible implementation manner of the first aspect, the rotating shaft mechanism further includes a second screen pushing structure, and the second screen pushing structure is arranged between the second shell connecting rod and the second gear connecting rod; when the first gear connecting rod and the second gear connecting rod rotate away from each other and drive the first door plate and the second door plate to rotate away from each other to the first door plate, the middle door plate and the second door plate are in the same plane, the second screen pushing structure can exert a pushing force on the second shell connecting rod in a direction away from the second gear connecting rod.

[0020] The second screen pushing structure can unfold the flexible screen, eliminate the folding phenomenon and improve the user experience, like the first screen pushing structure.

[0021] In a possible implementation manner of the first aspect, the first screen pushing structure includes a mounting hole formed in the first gear connecting rod and a support rod formed on the first shell connecting rod and capable of extending into the mounting hole; the first screen pushing structure further includes an elastic member, and one end of the elastic member is sleeved on the support rod; when the first door plate, the middle door plate and the second door plate are in the same plane, the support rod extends into the mounting hole, and the other end of the elastic member abuts against the mounting hole to exert an elastic force on the first shell connecting rod in a direction away from the first gear connecting rod.

[0022] That is, when the first door plate and the second door plate are unfolded, the distance between the first shell connecting rod and the first gear connecting rod is shortened, the elastic member is compressed and is in an energy storage state, the elastic member can generate an elastic force to push the first shell connecting rod outward, and since the first shell is fixedly connected with the first shell connecting rod and the flexible screen is attached to the first shell, the flexible screen can be unfolded and the folding mark can be eliminated.

[0023] In a possible implementation manner of the first aspect, the first shell connecting rod is provided with an inlaid groove, the first gear connecting rod is slidingly arranged in the inlaid groove, and the supporting rod is arranged in the inlaid groove and has an extension direction consistent with a relative sliding direction of the first gear connecting rod and the first shell connecting rod. The mounting hole is arranged on a surface of the first gear connecting rod opposite to the supporting rod.

[0024] In this way, the relative sliding structure of the first shell connecting rod and the first gear connecting rod and the first push screen structure between the first shell connecting rod and the first gear connecting rod are arranged in a concentrated manner, so that the structure of the rotating shaft structure is more compact.

[0025] In a possible implementation manner of the first aspect, the rotating shaft mechanism further comprises a guide structure configured to guide the intermediate door panel to move relative to the main body in a direction perpendicular to a length direction of the intermediate door panel.

[0026] By introducing the guide structure, the linear movement of the intermediate door panel relative to the main body is guided.

[0027] In a possible implementation manner of the first aspect, the guide structure comprises a guide hole arranged in the main body and a guide block slidingly arranged in the guide hole, the guide hole extends in a direction perpendicular to the length direction of the intermediate door panel, and the guide block is fixed to the intermediate door panel.

[0028] In the above technical solution, the guide block is fixed relative to the intermediate door panel, the guide hole is arranged in the main body, and the linear movement of the intermediate door panel is guided by the sliding of the guide block in the guide hole. It can be understood that in other embodiments, the guide block is arranged on the main body, and the guide hole is arranged on the intermediate door panel. In summary, the linear movement of the intermediate door panel is guided by the sliding cooperation of the guide block and the guide hole.

[0029] In a possible implementation manner of the first aspect, the guide structure has a plurality of guide structures, part of the guide structures are arranged along the length direction of the intermediate door panel, and the remaining guide structures are arranged along the width direction of the intermediate door panel.

[0030] By arranging the guide structure in multiple directions, the linear movement of the intermediate door panel relative to the main body can be further balanced and stable.

[0031] In a possible implementation manner of the first aspect, the rotating shaft mechanism further comprises a first damping structure arranged between the first shell connecting rod and the main body, one end of the first damping structure close to the first shell connecting rod is slidingly connected with the first shell connecting rod, and the other end of the first damping structure close to the main body is rotationally connected with the main body. When the first shell connecting rod drives the first door panel to rotate relative to the main body, the first damping structure is configured to apply a resistance to the first shell connecting rod.

[0032] In this way, when the first shell rotates, the first shell connecting rod can be suspended relative to the main body by the first damping structure exerting resistance on the first shell connecting rod, and because the first shell carrying the flexible screen is fixedly connected to the first shell connecting rod, the suspension requirement in the folding process of the flexible screen can be met, and the user experience is improved.

[0033] In a possible implementation manner of the first aspect, the first damping structure includes: a first cam connecting rod, a first cam, a first damping pin shaft and a first damping elastic piece; the first damping pin shaft is fixed on the main body, and an extension direction of the first damping pin shaft is consistent with a direction of a rotation axis of the first gear connecting rod relative to the main body; the first cam is slidingly arranged on the first damping pin shaft; one end of the first cam connecting rod close to the main body is rotationally installed on the first damping pin shaft, and the other end of the first cam connecting rod away from the main body is slidingly connected to the first shell connecting rod, and the one end of the first cam connecting rod close to the main body has a first damping surface and a second damping surface opposite to the first cam, and the first cam has a third damping surface and a fourth damping surface; the first damping elastic piece is sleeved on the first damping pin shaft; when the first shell connecting rod drives the first cam connecting rod to rotate to the first damping surface abutting against the third damping surface, the first damping elastic piece is in an energy storage state to generate a force on the first cam connecting rod to make the first door panel flat; when the first shell connecting rod drives the first cam connecting rod to rotate to the second damping surface abutting against the fourth damping surface, the first damping elastic piece is in the energy storage state to generate a force on the first cam connecting rod to make the first door panel closed.

[0034] In a possible implementation manner of the first aspect, the first cam connecting rod includes: a cam portion, a first connecting rod portion and a second connecting rod portion, the cam portion is rotationally installed on the first damping pin shaft; the first connecting rod portion and the second connecting rod portion are parallelly arranged, and one end of the first connecting rod portion and one end of the second connecting rod portion are connected to the cam portion, and the other end of the first connecting rod portion and the other end of the second connecting rod portion are slidingly connected to the first shell connecting rod.

[0035] In a possible implementation manner of the first aspect, the rotation shaft mechanism further includes a second damping structure, and the second damping structure includes: a second cam connecting rod, a second cam, a second damping pin shaft and a second damping elastic piece; the second damping pin shaft is fixed on the main body, and an extension direction of the second damping pin shaft is consistent with the extension direction of the first damping pin shaft; the second cam is slidingly arranged on the second damping pin shaft, and the first cam and the second cam are connected to make the first cam and the second cam move synchronously; one end of the second cam connecting rod close to the second cam is rotationally installed on the second damping pin shaft, and the other end is slidingly connected to the second shell connecting rod.

[0036] By connecting the second cam of the second damping structure and the first cam of the first damping structure, the first shell and the second shell can be simultaneously subjected to damping force when rotating, so that the flexible screen is symmetrically in the suspended position.

[0037] In a possible implementation manner of the first aspect, the first gear connecting rod and the second gear connecting rod rotate away from each other, and when the first door plate and the second door plate are driven to rotate away from each other to a first position, the first door plate, the intermediate door plate, and the second door plate are in the same plane to form a support surface.

[0038] That is, under the driving of the first gear connecting rod and the second gear connecting rod, the first door plate, the intermediate door plate, and the second door plate can be in the same plane to support the flattened flexible screen, and a user can operate on the flattened flexible screen.

[0039] In a possible implementation manner of the first aspect, the first gear connecting rod and the second gear connecting rod rotate toward each other, and when the first door plate and the second door plate are driven to rotate toward each other to a second position, the first door plate, the intermediate door plate, and the second door plate enclose a screen containing space. The first position herein can be understood as a position of the first door plate and the second door plate when the electronic device is in a closed state, at this time, the first door plate and the second door plate can form a preset included angle, and the intermediate door plate can sink to a preset position, and a space similar to a triangle but open can be formed between the three, and the bent part of the flexible screen is contained in the space.

[0040] In this way, when the first gear connecting rod and the second gear connecting rod rotate toward each other to the closed state of the electronic device, the length dimension of the rotating shaft mechanism increases to increase the radius of curvature of the flexible screen, so as to avoid the flexible screen being squeezed.

[0041] In a possible implementation manner of the first aspect, the first sub-connecting rod has opposite first and second surfaces; the first surface is provided with a first rotating shaft at a position close to the first door plate, the first door plate is provided with a first rotating hole at a position close to the main body and close to the first sub-connecting rod, and the first rotating shaft rotates relative to the first rotating hole to realize the rotating connection between the first door plate and the first sub-connecting rod; and the first surface is provided with a second rotating shaft at a position close to the main body, and the main body is provided with a second rotating hole at a position close to the first sub-connecting rod, and the second rotating shaft rotates relative to the second rotating hole to realize the rotating connection between the main body and the first sub-connecting rod.

[0042] In a possible implementation manner of the first aspect, the second surface is provided with a track groove, and the intermediate door plate is provided with a sliding pin at a position close to the first sub-connecting rod, and the sliding pin slides relative to the track groove to realize the sliding connection between the intermediate door plate and the first sub-connecting rod.

[0043] In a possible implementation manner of the first aspect, the main body side of the first door plate has a first door plate arc-shaped protrusion extending toward the first housing connecting rod, the first housing connecting rod is provided with a first arc-shaped clamping groove for assembling the first door plate arc-shaped protrusion, and the first door plate arc-shaped protrusion slides relative to the first arc-shaped clamping groove to realize the rotating connection between the first door plate and the first housing connecting rod.

[0044] In a second aspect, the present application also provides an electronic device, comprising a first shell and a second shell, a flexible screen and the hinge mechanism in any implementation manner of the first aspect, wherein the first shell is fixedly connected with the first shell connecting rod, and the second shell is fixedly connected with the second shell connecting rod; the first shell comprises a first surface, the second shell comprises a second surface, the flexible screen continuously covers the first surface of the first shell, the hinge mechanism and the second surface of the second shell, and the flexible screen is fixedly connected with the first surface of the first shell and the second surface of the second shell respectively.

[0045] In the electronic device provided by the present application, since the hinge mechanism in the first aspect is included, when the first shell and the second shell move towards each other, not only the first door plate and the second door plate in the hinge mechanism will produce rotary motion, but also the intermediate door plate located between the first door plate and the second door plate will move towards the main body, so as to avoid the flexible screen in folding and provide sufficient accommodation space for preventing the flexible screen from being extruded and deformed. On the contrary, when the first shell and the second shell move away from each other and drive the flexible screen to be unfolded, the intermediate door plate will move away from the main body until the first door plate, the intermediate door plate and the second door plate are in the same plane to support the unfolded flexible screen.

[0046] In addition, by engaging the transmission belt to drive the intermediate door plate to move relative to the main body, the movement precision of the intermediate door plate can be improved.

[0047] In a possible implementation manner of the second aspect, the flexible screen is composed of a first region, a second region, a third region, a fourth region and a fifth region which are continuously arranged; the first region is fixedly connected with the first surface of the first shell; the second region is fixedly connected with the surface of the first door plate facing the flexible screen; the third region is oppositely arranged with the intermediate door plate and can move relative to the intermediate door plate; the fourth region is fixedly connected with the surface of the second door plate facing the flexible screen; and the fifth region is fixedly connected with the second surface of the second shell.

[0048] In a possible implementation manner of the second aspect, the hinge mechanism comprises a decorative cover; when the electronic device is unfolded, the decorative cover is hidden in the first shell and the second shell; and when the electronic device is folded, the decorative cover is exposed outside the first shell and the second shell to make up the gap between the first shell and the second shell.

[0049] That is to say, no matter whether the electronic device is in a folded state or an unfolded state, from the outside of the electronic device, the first shell and the second shell are seamlessly closed, thereby improving the appearance of the display device.

[0050] In a possible implementation manner of the second aspect, the electronic device comprises a mobile terminal, which can be a folding mobile phone, a folding tablet, a folding electronic book or the like. BRIEF DESCRIPTION OF DRAWINGS

[0051] Figure 1 An exploded view of an electronic device in a flat state according to an embodiment of the present application;

[0052] Figure 2 An exploded view of an electronic device in a flat state according to an embodiment of the present application without a flexible screen;

[0053] Figure 3 A back structure view of an electronic device in a flat state according to an embodiment of the present application;

[0054] Figure 4 A structure view of an electronic device in a flat state according to an embodiment of the present application;

[0055] Figure 5a A structure view of an electronic device in an intermediate state according to an embodiment of the present application;

[0056] Figure 5b A side view of an electronic device in an intermediate state according to an embodiment of the present application;

[0057] Figure 6 A structure view of an electronic device in a closed state according to an embodiment of the present application;

[0058] Figure 7a A structure view of an outer folding electronic device in a flat state according to an embodiment of the present application;

[0059] Figure 7b A structure view of an outer folding electronic device in a closed state according to an embodiment of the present application;

[0060] Figure 8a A structure view of an inner folding electronic device in a flat state according to an embodiment of the present application;

[0061] Figure 8b A structure view of an inner folding electronic device in a closed state according to an embodiment of the present application;

[0062] Figure 9a A state view of a flexible screen and a hinge mechanism of an electronic device in a flat state according to an embodiment of the present application;

[0063] Figure 9b A state view of a flexible screen and a hinge mechanism of an electronic device in a closed state according to an embodiment of the present application;

[0064] Figure 10 A structure view of a hinge mechanism of an electronic device in a flat state according to an embodiment of the present application;

[0065] Figure 11 A structure view of a hinge mechanism of an electronic device in a closed state according to an embodiment of the present application;

[0066] Figure 12 Part structure diagram of the rotating shaft mechanism after removing the first door plate provided for the embodiment of the present application;

[0067] Figure 13 Simple schematic diagram of the connection relationship of the first housing connecting rod, the first gear connecting rod, the first secondary connecting rod, the first meshing transmission structure, the main body, the first door plate and the intermediate door plate provided for the embodiment of the present application;

[0068] Figure 14 Use state diagram of the connection relationship of the first housing connecting rod, the first gear connecting rod, the first secondary connecting rod, the first meshing transmission structure, the main body, the first door plate and the intermediate door plate provided for the embodiment of the present application;

[0069] Figure 15 Simple schematic diagram of the connection relationship of the second housing connecting rod, the second gear connecting rod, the second secondary connecting rod, the second meshing transmission structure, the main body, the second door plate and the intermediate door plate provided for the embodiment of the present application;

[0070] Figure 16 Use state diagram of the connection relationship of the second housing connecting rod, the second gear connecting rod, the second secondary connecting rod, the second meshing transmission structure, the main body, the second door plate and the intermediate door plate provided for the embodiment of the present application;

[0071] Figure 17 Exploded view of the part structure diagram of the rotating shaft mechanism provided for the embodiment of the present application;

[0072] Figure 18 Part structure diagram of the rotating shaft mechanism provided for the embodiment of the present application;

[0073] Figure 19 Structure diagram of the first gear connecting rod provided for the embodiment of the present application;

[0074] Figure 20 Structure diagram of the intermediate door plate provided for the embodiment of the present application;

[0075] Figure 21 Exploded view of the first gear connecting rod and the first housing connecting rod provided for the embodiment of the present application;

[0076] Figure 22 Part structure diagram of the rotating shaft mechanism provided for the embodiment of the present application;

[0077] Figure 23 Part structure diagram of the rotating shaft mechanism provided for the embodiment of the present application;

[0078] Figure 24 Part structure diagram of the rotating shaft mechanism provided for the embodiment of the present application;

[0079] Figure 25The structural diagram of the first sub-connecting rod provided for the embodiment of the present application is shown in the figure;

[0080] Figure 26 The structural diagram of the first sub-connecting rod provided for the embodiment of the present application is shown in the figure;

[0081] Figure 27 The exploded view of the middle door plate and the main body provided for the embodiment of the present application is shown in the figure;

[0082] Figure 28 The partial structural diagram of the rotating shaft mechanism provided for the embodiment of the present application is shown in the figure;

[0083] Figure 29 The state diagram of the flexible screen provided for the embodiment of the present application when having wrinkles is shown in the figure;

[0084] Figure 30 The partial structural diagram of the rotating shaft mechanism provided for the embodiment of the present application is shown in the figure;

[0085] Figure 31 The simple schematic diagram of the rotating shaft mechanism and the flexible screen provided for the embodiment of the present application is shown in the figure;

[0086] Figure 32 The structural diagram of the first screen pushing structure provided for the embodiment of the present application is shown in the figure;

[0087] Figure 33 The partial structural diagram of the rotating shaft mechanism provided for the embodiment of the present application is shown in the figure;

[0088] Figure 34 The damping principle diagram provided for the embodiment of the present application is shown in the figure;

[0089] Figure 35 The partial structural diagram of the rotating shaft mechanism provided for the embodiment of the present application is shown in the figure;

[0090] Figure 36 The damping principle diagram provided for the embodiment of the present application is shown in the figure;

[0091] Figure 37 The exploded view of the first cam connecting rod and the first cam provided for the embodiment of the present application is shown in the figure;

[0092] Figure 38 The partial structural diagram of the rotating shaft mechanism provided for the embodiment of the present application is shown in the figure;

[0093] Figure 39 The partial structural diagram of the rotating shaft mechanism provided for the embodiment of the present application is shown in the figure;

[0094] Figure 40 The exploded view of the electronic device provided for the embodiment of the present application is shown in the figure;

[0095] Figure 41 The structural diagram of the electronic device provided for the embodiment of the present application when in the unfolded state is shown in the figure;

[0096] Figure 42 A structural diagram of an electronic device according to an embodiment of the present application in a closed state.

[0097] Reference signs:

[0098] 100 - rotation shaft mechanism; 200 - first housing; 201 - first surface; 202 - third surface; 300 - second housing; 301 - second surface; 302 - fourth surface; 400 - flexible screen;

[0099] 11 - middle door plate; 11a - sliding pin; 11b - guide column;

[0100] 12 - first door plate; 12a - first door plate arc-shaped protrusion; 12b - first rotation hole;

[0101] 13 - second door plate;

[0102] 14 - main body; 14b - guide groove;

[0103] 15 - first linkage assembly; 151 - first housing linkage; 151a - sliding block; 151b - inlay groove; 151c - first arc-shaped clamping groove; 151d - support rod; 151e - sliding groove; 151e1 - first abutting surface; 151e2 - second abutting surface; 152 - first gear linkage; 152a - sliding groove; 152b - mounting hole; 1521 - sliding part; 1522 - rotating part; 153 - first sub linkage; 153a - first rotation shaft; 153b - second rotation shaft; 153c - track groove;

[0104] 16 - second linkage assembly; 161 - second housing linkage; 162 - second gear linkage; 163 - second sub linkage;

[0105] 17 - first meshing transmission structure; 171 - first gear; 172 - first rack;

[0106] 18 - second meshing transmission structure

[0107] 19 - guide structure;

[0108] 201 - first push screen structure; 201a - elastic member; 202 - second push screen structure;

[0109] 301 - first damping structure; 301a - first cam linkage; 301a1 - cam part; 301a2 - first linkage part; 301a3 - second linkage part; 301a4 - sliding block; 301b - first cam; 301c - first damping pin shaft; 301d - first damping elastic member;

[0110] 302 - second damping structure; 302a - second cam connecting rod; 302b - second cam; 302c - second damping pin shaft; 302d - second damping elastic member;

[0111] 303 - connecting rod;

[0112] 304 - third damping pin shaft;

[0113] 305 - fourth damping pin shaft;

[0114] 21 - decorative cover. DETAILED DESCRIPTION

[0115] The following describes various embodiments of the present application in conjunction with the accompanying drawings in the embodiments of the present application.

[0116] An embodiment of the present application provides a foldable electronic device. The foldable electronic device can include various electronic devices having a flexible screen and capable of changing the unfolded or folded state of the flexible screen and itself. Under different use requirements, the foldable electronic device can be unfolded to an unfolded state, folded to a closed state, or in an intermediate state between the unfolded state and the closed state. That is, the foldable electronic device has at least two states, i.e., the unfolded state and the closed state. In some cases, a third state, i.e., an intermediate state between the unfolded state and the closed state, can be further included. It can be understood that the intermediate state is not only a unique state, but can be any one or more states between the unfolded state and the closed state.

[0117] Exemplarily, the foldable electronic device can be, but is not limited to, a mobile phone, a tablet computer, a notebook computer, an e-book reader, a camera, a wearable device, a household electronic device, etc. For ease of understanding, the foldable electronic device is taken as a mobile phone for illustration in various embodiments of the present application.

[0118] Referring to Figure 1 and Figure 2 , Figure 1 an exploded view of the foldable electronic device provided by an embodiment of the present application, Figure 2 an exploded view of the foldable electronic device provided by an embodiment of the present application without the flexible screen 400. In combination with Figure 1 and Figure 2 , the foldable electronic device can include a rotating shaft mechanism 100, a first housing 200, a second housing 300, and a flexible screen 400.

[0119] The first housing 200 and the second housing 300 are arranged on two sides of the rotating shaft mechanism 100 and connected with the rotating shaft mechanism 100 respectively, and the rotating shaft mechanism 100 is movable to fold or unfold the first housing 200 and the second housing 300 relative to each other.

[0120] The first shell 200 and / or the second shell 300 can form a mounting space, respectively, for mounting electronic components of the electronic device, such as a circuit board, a battery, a microphone, a speaker, a camera, and the like. The circuit board can integrate main controller, a storage unit, an antenna module, a power management module, and the like of the electronic device, and the battery can supply power to the flexible screen 400, the circuit board, the microphone, the speaker, the camera, and the like. The first shell 200 and the second shell 300 can be of equal thickness or of unequal thickness, which is not limited in the embodiments of the present application.

[0121] In a possible design, the first shell 200 and the second shell 300 can both be provided with a mounting space, and the electronic components of the electronic device are distributed in the two shells. In another possible design, the first shell 200 can be provided with a mounting space, and the electronic components of the electronic device are distributed in the first shell 200; or the first shell 200 and the second shell 300 can both be provided with a mounting space, but most of the electronic components of the electronic device are arranged in the first shell 200, and a small part of the electronic components are arranged in the second shell 300, so that the second shell 300 is more lightweight and can be folded and unfolded more conveniently.

[0122] Referring to Figure 2 and Figure 3 , Figure 3 is a schematic view of a back structure of the foldable electronic device provided in an embodiment of the present application. In the embodiment of the present application, the first shell 200 has a first surface 201 and a third surface 202 opposite to the first surface 201, and the second shell 300 has a second surface 301 and a fourth surface 302 opposite to the second surface 301. The first surface 201 of the first shell 200 and the second surface 301 of the second shell 300 can be used together to support the flexible screen 400, and the third surface 202 of the first shell 200 and the fourth surface 302 of the second shell 300 can be used as an appearance surface of the electronic device. In addition, it can be understood that in some application scenarios, a display screen can also be arranged on the third surface 202 of the first shell 200 and the fourth surface 302 of the second shell 300, which can be a flexible screen or a non-flexible screen, which is not limited herein.

[0123] Referring to Figure 4 , Figure 4 is a schematic view of the structure of the electronic device when the first shell 200 and the second shell 300 are unfolded to a flat state. In the embodiment of the present application, the first shell 200 and the second shell 300 are in the flat state, and Figure 1 and Figure 4, the first surface 201 of the first shell 200 and the second surface 301 of the second shell 300 are in the same plane, and an included angle between the first surface 201 and the second surface 301 can be substantially 180° (a certain angle tolerance is also allowed, for example, the included angle between the first surface 201 and the second surface 301 is 165°, 177° or 185°).

[0124] Further referring to Figure 1 and Figure 4 , the flexible screen 400 continuously covers the first surface 201 of the first shell 200, the hinge mechanism 100 and the second surface 301 of the second shell 300 of the foldable electronic device. Among them, the flexible screen 400 can be divided into continuous areas A, B, C, D and E, wherein areas B, C and D include the bending part when folded. Area A corresponds to the first surface 201 of the first shell 200, which can be fixedly connected to the first surface 201 of the first shell 200, and area E corresponds to the second surface 301 of the second shell 300, which can be fixedly connected to the second surface 301 of the second shell 300. It should be noted that the division lines of areas B, C and D shown in the figure are only exemplary, and the division lines of areas B, C and D can be adjusted according to the design of the hinge mechanism 100.

[0125] Referring to Figure 5a and Figure 5b , Figure 5a , the structure schematic diagram of the electronic device is shown when the first shell 200 and the second shell 300 are relatively rotated (unfolded or folded) to the intermediate state. Figure 5b , the side view of the electronic device is shown when the first shell 200 and the second shell 300 are relatively rotated (unfolded or folded) to the intermediate state. In Figure 5a , the flexible screen 400 is omitted to show the shape of the two shells in the intermediate state. At this time, the electronic device can be in any state between the flat state and the closed state, for example, the included angle between the first surface 201 of the first shell 200 and the second surface 301 of the second shell 300 can be 130°-150°.

[0126] Further referring to Figure 6 , Figure 6 , the structure schematic diagram of the electronic device is shown when the first shell 200 and the second shell 300 are relatively folded to the closed state. Referring to Figure 1 and Figure 6When the first shell 200 and the second shell 300 are in the closed state, the first surface 201 of the first shell 200 and the second surface 301 of the second shell 300 face each other or are away from each other (specifically related to the folding mode), at this time, there can be a small included angle between the first surface 201 of the first shell 200 and the second surface 301 of the second shell 300 or they are parallel to each other so that the two shells can be completely folded (also allows a certain angle tolerance).

[0127] The flexible screen 400 can be used to display information and provide an interactive interface for the user. In embodiments of the present application, the flexible display screen 400 can be, but is not limited to, an organic light-emitting diode (OLED) display screen, an active-matrix organic light-emitting diode (AMOLED) display screen, a mini organic light-emitting diode display screen, a micro organic light-emitting diode display screen, a micro organic light-emitting diode display screen, a quantum dot light emitting diode (QLED) display screen, etc.

[0128] As described above, the electronic device can be switched between the unfolded state and the closed state through the movement of the shaft mechanism 100, and the flexible screen 400 can be folded or unfolded with the first shell 200 and the second shell 300. Generally, the folding mode of the foldable electronic device is divided into outer folding and inner folding. In the outer folding, the flexible screen 400 is on the outside of the electronic device during the process of switching from the unfolded state to the closed state and in the closed state, that is, the flexible screen 400 is still visible to the user during the folding process and in the closed state, and the user can also perform some operations on the flexible screen 400 in the closed state. As described above, the first surface 201 of the first shell 200 and the second surface 301 of the second shell 300 can move away from each other, and when the first shell 200 and the second shell 300 are in the closed state, the first surface 201 of the first shell 200 and the second surface 301 of the second shell 300 are away from each other. For reference Figure 7a and Figure 7b , Figure 7a FIG. 1 is a structural schematic diagram of an outer folding electronic device in an unfolded state, Figure 7bThis is a schematic diagram of the outward-folding electronic device in its closed state. When the electronic device is closed, the flexible screen 400 is located on the outside of the device. It is understandable that, without adjustment, the outward-folding electronic device will... Figure 7a to Figure 7b During the process, the rotation radius of the flexible screen 400 will be larger than that of the pivot mechanism 100, resulting in excessive stretching of the flexible screen 400. Therefore, the design of the outward-folding pivot mechanism 100 needs to consider how to avoid or reduce this stretching as much as possible.

[0129] In contrast, the inward-folding design means that during the transition from a flattened to a closed state of the electronic device, and while the device is closed, the flexible screen 400 remains inside the device. That is, during the folding process, the flexible screen 400 gradually becomes invisible to the user until, in the closed state, it is completely hidden between the two housings. In other words, as mentioned above, the first surface 201 of the first housing 200 and the second surface 301 of the second housing 300 can move towards each other, and when the first housing 200 and the second housing 300 are closed, their first surfaces 201 and 301 face each other. (See also...) Figure 8a and Figure 8b , Figure 8a This is a schematic diagram of the structure of an inward-folding electronic device in its flattened state. Figure 8b This is a schematic diagram of an inward-folding electronic device in its closed state. When the electronic device is closed, the flexible screen 400 is located inside the device. It can be understood that the inward-folding electronic device folds during the folding process (i.e., from...). Figure 8a to Figure 8b During the process, the flexible screen 400 will be folded in half. The maximum bending degree that the flexible screen 400 can withstand is limited, therefore there is a corresponding critical radius of curvature R (or critical radius of curvature range). Once the radius of curvature at the bending position of the flexible screen 400 is less than this critical radius of curvature R, it is very easy for the flexible screen 400 to break and become unusable. In addition, even if the radius of curvature at the bending position is greater than the critical radius of curvature, if the radius of curvature of the rotating mechanism 100 of the electronic device is too small, it will also lead to problems such as wrinkles, creases, and misalignment of internal layers in the flexible screen. Therefore, the design of the rotating mechanism 100 of the inward-folding electronic device needs to maximize the radius of curvature at the bending position of the flexible screen 400, thereby reducing the pressure on the flexible screen 400.

[0130] It is easy to understand that, on the one hand, increasing the spacing distance between the two housings in the folded state can increase the radius of curvature, so that the flexible screen 400 will not be directly folded. The greater the spacing distance between the two housings, the greater the radius of curvature of the bending position of the flexible screen 400, and the smaller the extrusion of the flexible screen 400; the smaller the spacing distance between the two housings, the smaller the radius of curvature of the bending position of the flexible screen 400, and the greater the extrusion of the flexible screen 400, and the more obvious the crease. On the other hand, the greater the spacing distance between the two housings, the greater the thickness of the electronic device in the folded state, which will affect the portability of the electronic device, and this spacing is also easy to cause dust, foreign matter, etc. to enter, which will also damage and wear the flexible screen, affect the service life of the flexible screen, and also affect the service life of the shaft mechanism.

[0131] Based on the above problems of the inward folding foldable electronic device, the embodiments of the present application provide a foldable electronic device and a shaft mechanism suitable for the electronic device, which aims to improve the portability of the electronic device, and also provides a larger accommodation space for the flexible screen 400 during the folding process and in the closed state, so as to increase the radius of curvature of the bending position of the flexible screen 400, thereby reducing the risk of damage to the flexible screen 400 due to extrusion.

[0132] First, the main components and related mechanisms that the shaft mechanism 100 provided by the present application may involve will be briefly introduced, and the specific structure and implementation principle of each part will be further described in detail later.

[0133] Figure 9a And Figure 9b The simple schematic diagrams of the shaft mechanism 100 provided by the present application in two different states are shown. Among them, Figure 9a The state diagram of the flexible screen 400 and the shaft mechanism 100 when the electronic device is in the unfolded state is shown, Figure 9b The state diagram of the flexible screen 400 and the shaft mechanism 100 when the electronic device is in the closed state is shown.

[0134] Referring to Figure 9a And Figure 9b The shaft mechanism 100 provided by the present application includes a first door plate 12, a second door plate 13 and an intermediate door plate 11, the first door plate 12 and the second door plate 13 are arranged on the opposite sides of the intermediate door plate 11, that is, the intermediate door plate 11 is clamped between the first door plate 12 and the second door plate 13. The shaft mechanism 100 further includes a main body 14, and the first door plate 12, the intermediate door plate 11 and the second door plate 13 are on the same side of the main body 14. It can be understood that, as Figure 9a, the first door plate 12 has opposite A1 and B1 surfaces, the second door plate 13 has opposite A2 and B2 surfaces, and the intermediate door plate 11 has opposite A3 and B3 surfaces. The A1, A2 and A3 surfaces are on the same side, and the B1, B2 and B3 surfaces are on the same side. The main body 14 is arranged on the side of the B1, B2 and B3 surfaces, and the flexible screen 400 is arranged on the side of the A1, A2 and A3 surfaces.

[0135] In the hinge mechanism 100 provided in the present application, the first door plate 12 can rotate relative to the main body 14, and the second door plate 13 can also rotate relative to the main body 14, and the rotation direction of the first door plate 12 is opposite to that of the second door plate 13. The oppositely rotating first and second door plates 12 and 13 can include two states, the first state is that the first and second door plates 12 and 13 rotate towards each other (or referred to as relative) when the electronic device is folded; the second state is that the first and second door plates 12 and 13 rotate away from each other when the electronic device is unfolded.

[0136] In addition, in the hinge mechanism 100 provided in the present application, during the rotation of the first and second door plates 12 and 13, the intermediate door plate 11 can move towards the main body 14 or move away from the main body 14.

[0137] Referring to Figure 4 and Figure 9a , the flexible screen 400 continuously covers the first shell 200, the hinge mechanism 100 and the second shell 300 of the foldable electronic device. Among them, the area A corresponds to the first surface 201 of the first shell 200, which can be fixedly connected to the first surface 201 of the first shell 200, and the area E corresponds to the second surface 301 of the second shell 300, which can be fixedly connected to the second surface 301 of the second shell 300. The area B is fixedly connected to the first door plate 12 of the hinge mechanism, the area D is fixedly connected to the second door plate 13 of the hinge mechanism, the area C is opposite to the intermediate door plate 11, and the area C can move relative to the intermediate door plate 11.

[0138] As Figure 9a , when the electronic device is in the unfolded state, the first door plate 12, the intermediate door plate 11 and the second door plate 13 are in the same plane and are used to support the unfolded flexible screen 400. When the electronic device changes from the unfolded state to the closed state, as Figure 9a to Figure 9bAs shown, the first door panel 12 rotates relative to the main body 14 in the rotational direction P1, and the second door panel 13 rotates relative to the main body 14 in the direction opposite to P1, P2. That is, the ends of the first door panel 12 and the second door panel 13 furthest from the main body 14 approach each other, while the ends of the first door panel 12 and the second door panel 13 closest to the main body 14 move away from each other, causing the flexible screen 400 to bend between the first door panel 12 and the second door panel 13. Furthermore, as the first door panel 12 and the second door panel 13 approach each other relative to the main body 14, the middle door panel 11 rotates along... Figure 9b The direction P3 shown moves closer to the main body 14. For example, the distance between the middle door panel 11 and the main body 14 can be adjusted by... Figure 9a D1 is reduced to Figure 9b D2. Thus, the first door panel 12, the middle door panel 11, and the second door panel 13 form a near-triangular receiving cavity, within which the flexible screen 400 is housed, and can be shaped like a teardrop. It can be understood that by moving the middle door panel 11 towards the main body 14, a sufficiently large receiving space can be provided for the flexible screen 400, thereby increasing the radius of curvature at the bending point of the flexible screen 400 and reducing the risk of the flexible screen 400 being crushed or damaged.

[0139] Conversely, when an electronic device changes from a closed state to a flattened state, such as Figure 9b to Figure 9a As shown, the first door panel 12 rotates relative to the main body 14 in a direction opposite to the rotation direction P1, and the second door panel 13 rotates relative to the main body 14 in a direction opposite to the direction P2. That is, the first door panel 12 and the second door panel 13 move away from each other, causing the flexible screen 400 to unfold. As the ends of the first door panel 12 and the second door panel 13 move away from the main body 14, the middle door panel 11 rotates along... Figure 9b The shown direction moves away from the main body 14 in the opposite direction to P3 until the first door panel 12, the middle door panel 11 and the second door panel 13 move to be in the same plane to support the flattened flexible screen 400.

[0140] Based on the above description of the structure of the hinge mechanism 100 provided in the present application, and the description of the movement relationship between the various structures in the hinge mechanism 100, it can be seen that in the hinge mechanism 100 given in the present application, not only can the first door plate 12 and the second door plate 13 rotate relative to the main body 14, but the intermediate door plate 11 can also be raised and lowered relative to the main body 14, so that the length of the hinge mechanism 100 can change. That is, when the flexible screen 400 is folded, the length of the hinge mechanism 100 can be lengthened, leaving more accommodation space for the flexible screen 400, increasing the radius of curvature at the folding position of the flexible screen 400, and avoiding extrusion on the part of the flexible screen 400 close to the hinge mechanism 100. When the flexible screen 400 is unfolded, the length of the hinge mechanism 100 can be shortened. That is, the hinge mechanism 100 can enable the length of the flexible screen 400 to remain substantially unchanged, that is, not to be extruded or stretched, when the flexible screen 400 is at any angle during folding.

[0141] Figure 10 And Figure 11 An implementable structure of a hinge mechanism 100 is given, and Figure 10 a structure diagram of the hinge mechanism 100 when the electronic device is in a flat state, Figure 11 a structure diagram of the hinge mechanism 100 when the electronic device is in a closed state. In combination with Figure 10 and Figure 11 In addition to including the first door plate 12, the second door plate 13, the intermediate door plate 11, and the main body 14, the hinge mechanism 100 also includes a first linkage assembly 15 and a second linkage assembly 16, which are arranged opposite to each other on both sides of the main body 14, that is, the first linkage assembly 15 is arranged close to the first door plate 12, and the second linkage assembly 16 is arranged close to the second door plate 13.

[0142] Figure 12 a structure diagram of the hinge mechanism 100 after removing the first door plate 12, in combination with Figure 12 It is shown that the first linkage assembly 15 includes a first housing linkage 151 and a first gear linkage 152, as well as a first sub-linkage 153. In addition, the hinge mechanism 100 also includes a first meshing transmission structure 17.

[0143] Figure 13A simple schematic diagram of the connection relationship of the first housing link 151, the first gear link 152, the first secondary link 153, the first meshing transmission structure 17, the main body 14, the first door plate 12, and the intermediate door plate 11 is given. Among them, one end of the first gear link 152 close to the main body 14 is rotationally connected with the main body 14, one end of the first gear link 152 away from the main body 14 is slidingly connected with the first housing link 151, one end of the first gear link 152 close to the intermediate door plate 11 is meshingly connected with the intermediate door plate 11 through the first meshing transmission structure 17, one end of the first door plate 12 is rotationally connected with the first housing link 151, the other end of the first door plate 12 is rotationally connected with one end of the first secondary link 153, the other end of the first secondary link 153 is rotationally connected with the main body 14, and the first secondary link 153 is slidingly connected with the intermediate door plate 11.

[0144] As shown in Figure 13 , when the first gear link 152 rotates relative to the main body 14, under the mechanical linkage action of the first housing link 151, the first secondary link 153, the first gear link 152, and the first meshing transmission structure 17, the first door plate 12 will be driven to rotate relative to the main body 14, and the intermediate door plate 11 will be driven to move relative to the main body 14, thereby realizing the extension and contraction of the rotating shaft mechanism 100.

[0145] As shown in Figure 14 , the positions of the first gear link 152, the first housing link 151, the first secondary link 153, the first door plate 12, and the intermediate door plate 11 when the electronic device is folded and the rotating shaft mechanism 100 is in two different states are given. Among them, the black solid line shows one of the positions of the first gear link 152, the first housing link 151, the first secondary link 153, the first door plate 12, and the intermediate door plate 11, and the black dashed line shows the other position of the first gear link 152, the first housing link 151, the first secondary link 153, and the first door plate 12 and the intermediate door plate 11.

[0146] As shown in Figure 14 , it is known that since the first secondary link 153 is slidingly connected with the intermediate door plate 11, and the two ends of the first secondary link 153 are also rotationally connected with the first door plate 12 and the main body 14 respectively, through this sliding connection, the movement position of the end of the first door plate 12 close to the main body 14 can be constrained, for example, as shown in Figure 14 , when the electronic device is folded, the intermediate door plate 11 sinks relative to the main body 14 (i.e. moves from the black solid line position to the black dashed line position), driving the first secondary link 153 to rotate, which can constrain the end of the first door plate 12 close to the main body 14 to rotate from the C1 position to the C2 position.

[0147] In addition, as shown in Figure 14As shown, since one end of the first housing link 151 is rotationally connected with the first door plate 12 and the other end is slidingly connected with the first gear link 152, the movement position of the end of the first door plate 12 away from the main body 14 can be controlled, for example, when the electronic device is folded, the middle door plate 11 sinks relative to the main body 14 (i.e. moves from the black solid line position to the black dashed line position), and the end of the first door plate 12 away from the main body 14 can be constrained to rotate from the D1 position to the D2 position. That is, through the mechanical linkage mechanism formed by the first gear link 152, the first housing link 151, the first secondary link 153, the first door plate 12, the middle door plate 11, and the main body 14, the movement position of the first door plate 12 can be accurately controlled.

[0148] Continuing to combine Figure 14 Since the first secondary link 153 is slidingly connected with the middle door plate 11 and rotationally connected with the first door plate 12, the movement position of the middle door plate 11 is associated with the rotation position of the first door plate 12, and thus the length change of the hinge mechanism 100 can be accurately controlled, for example, when the electronic device is folded, the size of the screen space formed can be accurately controlled to reserve appropriate space for the flexible screen.

[0149] In addition, Figure 13 and Figure 14 The end of the first gear link 152 close to the middle door plate 11 is meshingly connected with the middle door plate 11 through the first mesh transmission structure 17. That is, when the first gear link 152 rotates relative to the main body 14, the middle door plate 11 can be driven to move relative to the main body 14 through the first mesh transmission structure 17.

[0150] Compared with using friction transmission, the above-mentioned technical means of moving the middle door plate 11 through mesh transmission can reduce the movement resistance of the middle door plate 11, improve the stability of the movement of the middle door plate 11, and also improve the movement accuracy of the middle door plate 11. In addition, when the first gear link 152 rotates relative to the main body 14, the middle door plate 11 can quickly respond, i.e. quickly move relative to the main body 14. Moreover, through mesh transmission, the use reliability of the hinge mechanism 100 will not be quickly reduced due to multiple folding of the electronic device. Therefore, using mesh transmission to drive the middle door plate 11 to move can effectively improve the use performance of the electronic device.

[0151] As shown in the figure, Figure 15 , Figure 15 The structure of the second link assembly 16 is shown. Specifically, the second link assembly 16 arranged close to the second door plate 13 also includes a second housing link 161 and a second gear link 162, as well as a second secondary link 163. In addition, the hinge mechanism 100 also includes a second mesh transmission structure 18.

[0152] Similar to the first linkage assembly 15, in the second linkage assembly 16, the second gear linkage 162 is rotatably connected to the main body 14 at one end close to the main body 14, and is slidably connected to the second housing linkage 161 at the other end away from the main body 14. The second gear linkage 162 is meshingly connected to the intermediate door panel 11 at one end close to the intermediate door panel 11 through the second meshing transmission structure 18. One end of the second door panel 13 is rotatably connected to the second housing linkage 161, and the other end of the second door panel 13 is rotatably connected to one end of the second secondary linkage 163. The other end of the second secondary linkage 163 is rotatably connected to the main body 14, and the second secondary linkage 163 is slidably connected to the intermediate door panel 11.

[0153] As shown in FIG. 1, the hinge mechanism 100 is in two different states when the electronic device is folded, and the positions of the second gear linkage 162, the second housing linkage 161, the second secondary linkage 163, the second door panel 13, and the intermediate door panel 11 are shown. Figure 16 Figure 16 The mechanism by which the second linkage assembly 16 and the second meshing transmission structure 18 drive the second door panel 13 to rotate and drive the intermediate door panel 11 to move is the same as the mechanism by which the first linkage assembly 15 and the first meshing transmission structure 17 drive the first door panel 12 to rotate and drive the intermediate door panel 11 to move, which will not be described again here. Figure 14

[0154] In some embodiments, in order to improve the balance of the rotation of the first door panel 12 and the second door panel 13 relative to the main body 14, the first linkage assembly 15 and the second linkage assembly 16 can be symmetrically arranged about the main body 14, and the first meshing transmission structure 17 and the second meshing transmission structure 18 can be symmetrically arranged about the main body 14.

[0155] Similarly, in order to improve the symmetry and balance of the rotation of the first door panel 12 and the second door panel 13 relative to the main body 14, the rotation axis of the first gear linkage 152 relative to the main body 14 can be parallel to the rotation axis of the second gear linkage 162 relative to the main body 14. The rotation axis of the first door panel 12 relative to the first housing linkage 151 can be parallel to the rotation axis of the second door panel 13 relative to the second housing linkage 152.

[0156] In some designs, the first housing linkage 151 can include one or more, and the first gear linkage 152 can also include one or more. In the implementation of the present application, as shown in FIG. 1, the first housing linkage 151 includes one first gear linkage 152, and the second housing linkage 161 includes one second gear linkage 162. Figure 17 Figure 17 FIG. 1 is an exploded view of part of the structure of the hinge mechanism 100, and Figure 17 ​​​In the shown embodiment, the rotation shaft mechanism 100 is provided with one first housing link 151 and one first gear link 152. In other embodiments, the first housing link 151 has one, and the first gear link 152 has one or more, in which case the one or more first gear links 152 can be in sliding connection with the first housing link 151; or, the first housing link 151 has one or more, and the first gear link 152 has one or more, in which case the one or more first housing links 151 and the one or more first gear links 152 can be in one-to-one sliding connection.

[0157] The number and arrangement of the second housing link 161 and the second gear link 162 in the second link assembly 16 can be referred to the above description of the first housing link 151 and the first gear link 152, and will not be described here.

[0158] In some embodiments, the first sub-link 153 can include one or more. In the embodiment of the present application, the first sub-link 153 has two, which can be arranged at intervals along the length direction of the main body 14 (such as the S direction of the main body 14). Figure 17 Figure 17 The number and arrangement of the second sub-link 163 can be referred to the above description of the first sub-link 153, and will not be described here.

[0159] The number and arrangement of the second sub-link 163 can be referred to the above description of the first sub-link 153, and will not be described here.

[0160] The structure that can be realized by the first mesh transmission structure 17 will be described below. The structure that can be realized by the second mesh transmission structure 18 can be referred to the description of the first mesh transmission structure 17, and in some embodiments, the structure that can be realized by the second mesh transmission structure 18 can be the same as or different from the structure that can be realized by the first mesh transmission structure 17.

[0161] The first mesh transmission structure 17 has various alternative embodiments. At least two different first mesh transmission structures 17 will be described below.

[0162] Figure 18 The structure that can be realized by one of the first mesh transmission structures 17 is shown, and Figure 18 is a sectional view of part of the structure of the rotation shaft mechanism 100. As shown in the figure, Figure 18 the first mesh transmission structure 17 includes a first gear 171 and a first rack 172 engaged with the first gear 171. The first gear 171 is arranged at one end of the first gear link 152 close to the intermediate door panel 11, and the first rack 172 is formed on the intermediate door panel 11.

[0163] In combination with the above, Figure 18 the rotation axis of the first gear 171 is parallel to the rotation axis of the first gear link 152, such as, both can be along the length direction of the intermediate door panel 11 (such as the S direction of the main body 14). Figure 18 ​The first rack 172 extends in the S direction and can be perpendicular to the middle door panel 11, that is, perpendicular to the length direction S of the middle door panel 11.

[0164] Based on the above Figure 18 The description of the first meshing transmission structure 17 shown illustrates the working process of the first meshing transmission structure 17 driving the intermediate door panel 11 to move as follows: Figure 18 During the folding process of the electronic device, when the first gear linkage 152 rotates relative to the main body 14 in the P1 direction, the rotating first gear 171 drives the first rack 172 to move in the L1 direction, so that the middle door panel 11 moves closer to the main body 14. Conversely, during the closing process of the electronic device, when the first gear linkage 152 rotates relative to the main body 14 in the opposite direction to the P1 direction, the rotating first gear 171 drives the first rack 172 to move in the opposite direction to the L1 direction, so that the middle door panel 11 moves away from the main body 14.

[0165] Figure 19 A feasible structural diagram of a first gear 171 is provided. In alternative embodiments, it can be as follows: Figure 19 As shown, meshing teeth are formed at one end of the first gear connecting rod 152 near the middle door plate 11 to form the first gear 171. That is, the first gear 171 and the first gear connecting rod 152 are integrally formed. Alternatively, in other embodiments, the first gear 171 is fixedly connected to the first gear connecting rod 152 by a connector (e.g., a bolt).

[0166] Figure 19 The first gear 171 shown is a complete gear structure with a circular cross-section. In other embodiments, it can also be derived from... Figure 19 The image shows a portion of the complete gear structure cut off from the original.

[0167] Figure 20 A feasible structural diagram of the first rack 172 is provided. In alternative embodiments, the first rack 172 can be as follows: Figure 20 The part shown is integrally formed with the middle door panel 11, or is fixedly connected to the middle door panel 11 by a connector (e.g., bolts), or is fixedly connected to the middle door panel 11 by an adhesive.

[0168] The first meshing transmission structure 17 can also adopt the following structure, for example, the first meshing transmission structure 17 includes, in addition to, the following structures: Figure 17The first gear 171 and the first rack 172 shown can further include a first driven gear. The first gear 171 is externally meshed with the first driven gear, and the first driven gear is externally meshed with the first rack 172. Alternatively, more gear structures can be included, such as a second driven gear coaxially arranged with the first driven gear, the first gear 171 externally meshed with the first driven gear, and the second driven gear externally meshed with the first rack 172.

[0169] The connection structure between the first door plate 12, the first shell connecting rod 151, the first gear connecting rod 152, the first auxiliary connecting rod 153, and the main body 14 will be described in detail below.

[0170] The sliding connection between the first shell connecting rod 151 and the first gear connecting rod 152 has various implementation structures, and two different sliding connection structures are given below. Of course, in addition to this, other sliding connection structures can also be provided.

[0171] Example one, Figure 21 A sliding connection relationship is given, and Figure 21 An exploded view of the first shell connecting rod 151 and the first gear connecting rod 152 that cooperates with it is shown. In the embodiment of the present application, a sliding groove 152a is formed on the first gear connecting rod 152, and a sliding block 151a is formed on the first shell connecting rod 151. The sliding block 151a is assembled in the sliding groove 152a and can slide along the sliding groove 152a, thereby achieving the sliding connection between the first shell connecting rod 151 and the first gear connecting rod 152.

[0172] In order to improve the stability of the sliding of the first shell connecting rod 151 and the first gear connecting rod 152, as Figure 21 , the first gear connecting rod 152 is provided with two symmetrical sliding grooves 152a. Correspondingly, the first shell connecting rod 151 is provided with two sliding blocks 151a, and the two sliding grooves 152a and the two sliding blocks 151a are one-to-one slidingly connected.

[0173] In some designs, as Figure 21 , an inlay groove 151b can be formed on the first shell connecting rod 151, the first gear connecting rod 152 is assembled in the inlay groove 151b, and the sliding block 151a is arranged on the wall surface of the inlay groove 151b. In this way, the first shell connecting rod 151 located in the inlay groove 151b can be connected with the first gear connecting rod 152 through the cooperating sliding block 151a and sliding groove 152a.

[0174] In Example 2, a slider can be provided on the first gear connecting rod 152, and a groove can be formed on the first housing connecting rod 151. The slider on the first gear connecting rod 152 cooperates with the groove on the first housing connecting rod 151 to achieve sliding between the first housing connecting rod 151 and the first gear connecting rod 152. In other words, Example 2 achieves the same sliding connection effect by swapping the positions of the slider and the groove compared to Example 1. Therefore, the structure of the groove and slider can be set with reference to Example 1, which will not be elaborated here.

[0175] The sliding connection structure between the second gear connecting rod 162 and the second housing connecting rod 161 can refer to the sliding connection structure between the first housing connecting rod 151 and the first gear connecting rod 152 described above. Of course, other structures can also be used to achieve rotation.

[0176] The structure of the first gear connecting rod 152 is diverse. For example, in Figure 21 In the first gear connecting rod 152, there are sliding portions 1521 that are slidably connected to the first housing connecting rod 151, and rotating portions 1522 that are rotatably connected to the main body 14. A groove 152a is formed on the sliding portion 1521, and a first gear 171 for meshing with the first rack 172 can be formed on the rotating portion 1522.

[0177] The second gear connecting rod 162 can also have various structures. In order to ensure the balance of the movement of the entire rotating shaft mechanism 100, the second gear connecting rod 162 can adopt the same structure as the first gear connecting rod 152. That is, it also includes an integral rotating part and a sliding part.

[0178] The rotational connection between the first door panel 12 and the first housing connecting rod 151 can be achieved in various ways. For example, Figure 22 A diagram showing a rotating connection structure between the first door panel 12 and the first housing connecting rod 151 is provided. Figure 22 This is a partial structural diagram of the rotating shaft mechanism 100 according to an embodiment of this application. The first door panel 12 has a first arc-shaped protrusion 12a extending towards the first housing connecting rod 151 on its surface facing away from the flexible screen 400. A first arc-shaped groove 151c is formed on the first housing connecting rod 151. The first door panel arc-shaped protrusion is fitted into the first arc-shaped groove 151c and can rotate relative to the first arc-shaped groove 151c, thus achieving a rotatable connection between the first door panel 12 and the first housing connecting rod 151. Alternatively, the positions of the first arc-shaped groove and the first door panel arc-shaped protrusion can be interchanged, i.e., the first door panel arc-shaped protrusion is placed on the first housing connecting rod 151, and the first arc-shaped groove is formed on the first door panel 12. Similarly, relative rotation between the first door panel 12 and the first housing connecting rod 151 can still be achieved.

[0179] When using Figure 22The first arc-shaped clamping groove 151c can be a quarter circular arc groove, a third circular arc groove, etc. The first door plate arc-shaped protrusion 12a can be a quarter circular arc protrusion, a third circular arc protrusion, etc. Those skilled in the art can make adaptive adjustment to the specific shape of the first arc-shaped clamping groove 151c and the first door plate arc-shaped protrusion 12a according to actual needs, and the application does not make specific limitations thereto.

[0180] The rotating connection structure of the second door plate 13 and the second shell connecting rod 161 can refer to the rotating connection of the first door plate 12 and the first shell connecting rod 151 described above. For example, the second door plate 13 and the second shell connecting rod 161 are also rotatably connected through arc-shaped protrusions and arc-shaped clamping grooves.

[0181] The rotating connection of the first door plate 12 and the first auxiliary connecting rod 153 also has various implementation structures. For example, as shown in Figure 23 A rotating connection structure diagram of the first door plate 12 and the first auxiliary connecting rod 153 is given, and Figure 23 is a partial structure diagram of the rotating shaft mechanism 100 of the embodiment of the application, in which Figure 23 The surface of the first door plate 12 away from the flexible screen 400 and close to the first auxiliary connecting rod 153 is provided with a first rotating hole 12b, and the first rotating hole 12b and the first door plate arc-shaped protrusion 12a can be at opposite ends of the first door plate 12. The first auxiliary connecting rod 153 is formed with a first rotating shaft 153a rotatably arranged in the first rotating hole 12b, and the rotating connection of the first door plate 12 and the first auxiliary connecting rod 153 is realized through the rotating cooperation of the first rotating shaft 153a and the first rotating hole 12b. For another example, the first rotating shaft is arranged on the first door plate 12, and the first rotating hole is formed on the first auxiliary connecting rod 153. For yet another example, the first door plate 12 and the first auxiliary connecting rod 153 are rotatably connected through arc-shaped blocks and arc-shaped grooves.

[0182] The rotating connection of the second door plate 13 and the second auxiliary connecting rod 163 can refer to the rotating connection structure of the first door plate 12 and the first auxiliary connecting rod 153 described above, which will not be repeated here.

[0183] The sliding connection structure of the first auxiliary connecting rod 153 and the intermediate door plate 11 can adopt Figure 23 The connecting mode shown, for example, the first auxiliary connecting rod 153 is provided with a track groove 153c, and the intermediate door plate 11 is provided with a sliding pin 11a which can slide along the track groove 153c. Figure 23 Only one embodiment of the sliding connection is given, which does not constitute an absolute limitation on the sliding connection structure.

[0184] The rotating connection structure of the first auxiliary connecting rod 153 and the main body 14 will also have various implementation modes. For example, as shown in Figure 24As shown, the second pivot shaft 153b is arranged on the first sub-connecting rod 153 close to the main body 14, and the main body 14 is provided with a second rotating hole for assembling the second pivot shaft 153b. The second pivot shaft 153b is rotatably arranged in the second rotating hole, so as to realize the rotating connection between the first sub-connecting rod 153 and the main body 14. As an example, the rotating connection between the first sub-connecting rod 153 and the main body 14 can be realized by the rotating cooperation of the arc-shaped slot and the arc-shaped protrusion.

[0185] In some designs, as shown in Figure 25 and Figure 26 as shown, Figure 25 as shown is a structural view of the first sub-connecting rod 153, Figure 26 as shown is another angle of the structural view of the first sub-connecting rod 153, wherein the first sub-connecting rod 153 has opposite first and second surfaces F1 and F2, the second pivot shaft 153b and the first pivot shaft 153a are arranged on the first surface F1, and the track slot 153c is arranged on the second surface F2. The track slot 153 can be a through slot penetrating the first and second surfaces F1 and F2, or a blind slot not penetrating the first and second surfaces F1 and F2 as shown in Figure 25 and Figure 26 .

[0186] The rotating connection between the second door plate 13 and the second sub-connecting rod 163, the rotating connection between the second sub-connecting rod 163 and the main body 14, and the sliding connection between the second sub-connecting rod 163 and the intermediate door plate 11 can be referred to the rotating connection structure between the first door plate 12 and the first sub-connecting rod 153, the rotating connection between the first sub-connecting rod 153 and the main body 14, and the sliding connection structure between the first sub-connecting rod 153 and the intermediate door plate 11 as described above, which will not be repeated here.

[0187] In order to make the intermediate door plate 11 move linearly relative to the main body 14, the pivot mechanism 100 further comprises a guide structure 19, that is, when the intermediate door plate 11 is driven to move by the meshing transmission structure, the intermediate door plate 11 can be guided to move linearly by the guide structure 19.

[0188] Figure 27 One of the possible structures of the guide structure 19 is given, and Figure 27 as shown is an exploded view of the main body 14 and the intermediate door plate 11. Specifically, the main body 14 is provided with a guide slot 14b, and the side surface of the intermediate door plate 11 is formed with a guide column 11b. The extension direction of the guide slot 14b is perpendicular to the length direction of the intermediate door plate 11, and the guide column 11b is slidably arranged in the guide slot 14b to form the guide structure 19. The guide slot 14b and the guide column 11b can be arranged in the opposite positions, that is, the guide slot is arranged on the intermediate door plate 11, and the guide column is arranged on the main body 14, which can also realize the guiding effect.

[0189] In some implementations, the guide structure 19 can be provided as one, or as follows: Figure 27 and Figure 28 The settings shown can be multiple, for example, combined together. Figure 27 and Figure 28 Three guide structures 19 are provided, and two of the three guide structures are positioned along the length of the middle door panel 11 (e.g., Figure 28 The S-direction is set, and another guide structure 19 is set along the width direction of the middle door panel 11 (e.g., the S-direction). Figure 28 The L-direction is set. With this design, by setting guide structures 19 at multiple different positions, the stability of the linear movement of the middle door panel 11 can be further improved.

[0190] In practical implementation, when the electronic device is in a flattened state, the flexible screen 400, due to its flexible characteristics, may have wrinkles or bends, preventing it from remaining completely flat. For example, in some designs, structural components such as the first door panel 12, the middle door panel 11, the second door panel 13, the first housing 200, and the second housing 300 have assembly gaps during assembly. Therefore, when the electronic device is in a flattened state, although the first door panel 12, the middle door panel 11, the second door panel 13, the first housing 200, and the second housing 300 can be on the same plane, however... Figure 29 As shown, there may be a gap d between the first door panel 12 and the adjacent first housing 200, and / or between the second door panel 12 and the adjacent second housing 300. As a result, the flexible screen 400 will wrinkle at the location with the gap d, reducing the flatness of the flexible screen 400. In particular, when the operation position of the flexible screen 100 is exactly at the gap position, it will significantly reduce the user experience.

[0191] To ensure that the flexible screen 400 is fully opened and flattened when the electronic device is in a flattened state, the hinge mechanism 100 of this application also includes a screen-pushing structure. For example, as Figure 30 A first push screen structure 201 can be provided at the position where the first housing connecting rod 151 and the first gear connecting rod 152 cooperate. Figure 31 The push-screen principle of the first push-screen structure 201 involved in this application is given, such as... Figure 31 The first push screen structure 201 is used to apply a thrust F away from the first gear link 152 to the first housing link 151. Since the first housing link 151 is fixedly connected to the first housing 200, if a thrust F away from the first gear link 152 is applied to the first housing link 151, a thrust F away from the first door panel 12 will be applied to the first housing 200. When the electronic device is in a flattened state, a thrust will be generated on the flexible screen 400 part fixedly connected to the first housing 200, which can open the flexible screen, eliminate creases, and improve the user experience.

[0192] Figure 32 A first push screen structure 201 can be implemented as shown in the figure. The first push screen structure 201 is to apply elastic force to the first housing link 151 through the first gear link 152 to eliminate the folding of the flexible screen. Specifically, see Figure 32 As shown, the first push screen structure 201 includes a mounting hole 152b opened on the first gear link 152, and a support rod 151d formed on the first housing link 151 and capable of extending into the mounting hole 152b. In addition, the first push screen structure 201 also includes an elastic member 201a, and one end of the elastic member 201a is sleeved on the support rod 151d. In an implementable manner, the elastic member 201a here can be a spring or other extendable member.

[0193] When the electronic device is switched from the closed state to the unfolded state, the first gear link 152 and the second gear link 162 move away from each other, and the first gear link 152 rotating relative to the main body 14 drives the first housing link 151 to move. The support rod 151d moving together with the first housing link 151 can extend into the mounting hole 152d, so that the end of the elastic member 201a abuts against the mounting hole 152d, and is in an energy storage state, thereby applying an elastic pushing force to the first housing link 151 in a direction away from the first gear link 152.

[0194] It can be understood in this way Figure 32 The push screen process of the first push screen structure 201 is given. Not only when the electronic device is in the unfolded state, the first gear link 152 can apply elastic force to the first housing link 151 through the first push screen structure 201 to eliminate the folding of the flexible screen, but also when the electronic device is in the intermediate state or close to the unfolded state, the first gear link 152 can apply elastic force to the first housing link 151. In this way, the electronic device can be in the unfolded state under the action of the pushing force when it is close to the unfolded state, and the folding can be reduced.

[0195] In the above connection relationship between the first gear link 152 and the first housing link 151, the sliding fit connection of the first gear link 152 and the first housing link 151 is described, and in addition, the first push screen structure 201 also needs to be arranged at the matching position of the first gear link 152 and the first housing link 151. In order to simplify the structure and the assembly process, the structure for slidingly connecting the first gear link 152 and the first housing link 151 and the first push screen structure 201 can be integrated, see Figure 32As shown, the support rod 151d is arranged in the inlay groove 151b, the first gear connecting rod 152 is slidingly arranged in the inlay groove 151b, the extension direction of the support rod 151d is consistent with the relative sliding direction of the first gear connecting rod 152 and the first shell connecting rod 151, and the mounting hole 152b is arranged on the surface of the first gear connecting rod 152 opposite to the support rod 151d. In this way, the connection structure can be obviously simplified, and the space occupied by these structures or the complex assembly process can be avoided.

[0196] In combination Figure 31 , the hinge mechanism 100 of the present application can also be provided with a second screen pushing structure 202, which is arranged at the position where the second gear connecting rod 162 and the second shell connecting rod 161 cooperate. The second screen pushing structure 202 can adopt Figure 32 the first screen pushing structure shown.

[0197] In some designs, the first screen pushing structure 201 and the second screen pushing structure 202 can be symmetrically arranged about the main body 14 to improve the flatness of the entire flexible screen.

[0198] The electronic device given in the present application may, when folded, need the flexible screen to hover at a certain position to improve the user experience, therefore, the hinge mechanism given in the present application also includes a damping structure. For example, when the electronic device is in a flat state, the damping structure needs to apply a flattening force to the first shell 200 and the second shell 300 carrying the flexible screen 400, so that the flexible screen 400 remains in a flat state; for example, when the electronic device is in a closed state, the damping structure needs to apply a closing force to the first shell 200 and the second shell 300, so that the flexible screen 400 remains in a closed state.

[0199] The damping structure given in the present application includes a first damping structure 301 and a second damping structure 302, wherein the first damping structure 301 is used to apply damping to the first shell 200, and the second damping structure 302 is used to apply damping to the second shell 300. The following explains the constituent parts of the first damping structure 301, and the second damping structure 302 can refer to the design of the first damping structure 301.

[0200] In some realizable ways, the first damping structure 301 can be arranged between the first shell connecting rod 151 and the main body 14. When the first shell connecting rod 151 drives the first door plate 12 to rotate relative to the main body 14, the first damping structure 301 is used to apply a resistance to the first shell connecting rod 151. Since the first shell 200 carrying the flexible screen 400 is fixed relative to the first shell connecting rod 151, when the first damping structure 301 applies a resistance to the first shell connecting rod 151, the first shell 200 carrying the flexible screen 400 will hover at a certain position.

[0201] Figure 33 A structural diagram of a first damping structure 301 is shown, and the specific structure is shown in Figure 33 The first damping structure 301 includes a first cam connecting rod 301a, a first cam 301b, a first damping pin shaft 301c, and a first damping elastic member 301d. The first damping pin shaft 301c is fixed on the main body 14, and the extension direction of the first damping pin shaft 301c is consistent with the direction of the rotation axis of the first gear connecting rod 152 relative to the main body 14. The first cam 301b is slidingly arranged on the first damping pin shaft 301c. The first cam connecting rod 301a is rotatably installed on the first damping pin shaft 301c at one end close to the main body 14. The other end of the first cam connecting rod 301a away from the main body 14 is slidingly connected with the first shell connecting rod 151. The first damping elastic member 301d is sleeved on the first damping pin shaft 301c.

[0202] That is, when the first shell connecting rod 151 rotates, the first cam connecting rod 301a can be driven to rotate relative to the main body 14 through the sliding connection of the first cam connecting rod 301a and the first shell connecting rod 151.

[0203] Figure 34 A damping principle structural diagram of the first damping structure 301 is given, Figure 33 as shown in Figure 34 , the end of the first cam connecting rod 301a close to the first cam 301b has a first damping surface A1 surface and a second damping surface A2 surface opposite the first cam 301b. The first cam 301b has a third damping surface B1 surface and a fourth damping surface B2 surface opposite the first cam connecting rod 301a. In combination with Figure 33 and Figure 34 , when the first shell connecting rod 151 drives the first cam connecting rod 301a to rotate to the first position, the first damping surface A1 surface and the third damping surface B1 surface abut, and the first damping elastic member 301d is in an energy storage state, thereby generating a pressing force f1 on the first cam connecting rod 301a. The pressing force f1 can cause the first cam connecting rod 301a to generate a flattening force f11 as shown, Figure 33 . In this way, since the first cam connecting rod 301a and the first shell connecting rod 151 are in sliding fit, the first shell connecting rod 151 will be subjected to the flattening force f11 exerted by the first cam connecting rod 301a. The first shell connecting rod 151 will generate a flattening force on the first shell 200 under the action of the flattening force f11, and finally can exert a flattening force on the flexible screen 400, maintaining the hovering flattening state.

[0204] Figure 35 A structural diagram of the first damping structure 301 when the electronic device is in a closed state is given, Figure 36A damping principle structure diagram of the first damping structure 301 when the electronic device is in a closed state is shown. Specifically, when the first shell connecting rod 151 drives the first cam connecting rod 301a to rotate to the second position, the second damping surface A2 is in abutment with the fourth damping surface B2, and the first damping elastic element 301d is in an energy storage state, thereby generating a pressing force f2 on the first cam connecting rod 301a. The pressing force f2 can make the first cam connecting rod 301a generate a closing force f21, so that, since the first cam connecting rod 301a is in sliding fit with the first shell connecting rod 151, the first shell connecting rod 151 will be subjected to the closing force f21 applied by the first cam connecting rod 301a. Under the action of the closing force f21, the first shell connecting rod 151 will generate a closing force on the first shell 200, and finally can make the flexible screen maintain a hovering closed state. Figure 35

[0205] Figure 37 A realizable structure of the first cam connecting rod 301a is shown, and Figure 37 An exploded view of the first cam connecting rod 301a and the first cam 301b is shown. In this Figure 37 , the first cam connecting rod 301a includes a cam portion 301a1, a first connecting rod portion 301a2, and a second connecting rod portion 301a3. In combination with Figure 35 and Figure 37 , the cam portion 301a1 is rotatably installed on the first damping pin shaft 301c, the first damping surface A1 and the second damping surface A2 are formed on the surface of the cam portion 301a1 facing the first cam 301b, and the first connecting rod portion 301a2 and the second connecting rod portion 301a3 are arranged in parallel, one end of the first connecting rod portion 301a2 and one end of the second connecting rod portion 301a3 are connected with the cam portion 301a1, and the other end of the first connecting rod portion 301a2 and the other end of the second connecting rod portion 301a3 are in sliding connection with the first shell connecting rod 151.

[0206] When the first cam connecting rod 301a containing the first connecting rod portion 301a2 and the second connecting rod portion 301a3 is adopted Figure 37 , the first connecting rod portion 301a2 and the second connecting rod portion 301a3 can both apply a force to the first shell connecting rod 151, so that the flexible screen can be stably positioned in the hovering position.

[0207] In order to realize the sliding connection between the first cam connecting rod 301a and the first shell connecting rod 151, in some designs, see Figure 37 , a sliding block 301a4 can be formed at the end of the first connecting rod portion 301a2 and the second connecting rod portion 301a3 close to the first shell connecting rod 151, as shown in Figure 38 ​As shown, a groove 151e can be formed at the corresponding position of the first housing connecting rod 151, and the groove 151e has a first abutting surface 151e1 and a second abutting surface 151e2.

[0208] Combination Figure 38 and Figure 34 When the first damping surface A1 abuts against the third damping surface B1 to generate a compressive force f1, the slider 301a4 located in the groove 151e abuts against the first abutment surface 151e1 to apply pressure to the first housing connecting rod 151. Figure 33 The force f11 is shown. Similarly, combined with... Figure 38 and Figure 36 When the second damping surface A2 abuts against the fourth damping surface B2 to generate a compressive force f2, the slider 301a4 located in the groove 151e abuts against the second abutment surface 151e2 to apply pressure to the first housing connecting rod 151. Figure 35 The force f21 shown.

[0209] exist Figure 37 In the first cam link 301a structure shown, the cam part 301a1, the first link part 301a2 and the second link part 301a3, and the slider 301a4 can be formed by an integral molding process or connected by a connector. For example, the cam part 301a1, the first link part 301a2 and the second link part 301a3, and the slider 301a4 can be connected together by a threaded connector or adhesive.

[0210] Figure 39 The diagram shows a partial structural view of the rotating shaft mechanism 100, which includes a first damping structure 301 and a second damping structure 302. The second damping structure 302 is similar to the first damping structure 301, also including a second cam link 302a, a second cam 302b, a second damping pin 302c, and a second damping elastic element 302d. The second damping pin 302c, like the first damping pin 301c, is fixed to the main body 14, and its extension direction is consistent with that of the first damping pin 301c. The second cam 302b is slidably disposed on the second damping pin 302c. The end of the second cam link 302a closest to the main body 14 is rotatably mounted on the second damping pin 302c, while the end of the second cam link 302a furthest from the main body 14 is slidably connected to the second housing link 161. The second damping elastic element 302d is sleeved on the second damping pin 302c.

[0211] for Figure 39 The damping principle of the second damping structure 302 shown can be the same as the damping principle of the first damping structure 301 described above, and will not be repeated here.

[0212] In addition, in some designs, the first cam 301b in the first damping structure 301 and the second cam 302b of the second damping structure 302 can be connected, for example, by the connecting rod 303 in Figure 39 . In this way, damping symmetry of the first housing 200 and the second housing 300 can be achieved.

[0213] In some embodiments, the first cam 301b and the second cam 302b, and the connecting rod 303 can be formed by an integral molding process. Of course, other connecting structures can also be used for connection.

[0214] Continuing to see Figure 39 , not only the first damping pin 301c and the second damping pin 302c, but also the third damping pin 304 and the fourth damping pin 305, or more damping pins, each of which is provided with a damping elastic member. By providing multiple damping pins, the first cam 301b and the second cam 302b connected thereto can be balanced and stably moved. In addition, since each damping pin is provided with a damping elastic member, a greater extrusion force can be applied to the first cam connecting rod 301a and the second cam connecting rod 302a, so as to promote the flexible screen 400 to be stably in the hovering position, and improve the opening and closing experience in the intermediate state.

[0215] As shown in Figure 40 , Figure 40 , the exploded view of the electronic device is shown, and the electronic device given in the present application further includes a decorative cover 21, and the main body 14 of the rotating shaft mechanism 100 is fixed on the decorative cover 21. As shown in Figure 41 and Figure 42 , as shown in Figure 41 , a structural diagram of the electronic device in the unfolded state is shown, Figure 42 , a structural diagram of the electronic device in the closed state is shown, in combination with Figure 41 and Figure 42 , when the first housing 200 and the second housing 300 are unfolded, the end face of the first housing 200 is close to the end face of the second housing 300, and the rotating shaft mechanism 100 containing the decorative cover 21 is hidden in the first housing 200 and the second housing 300, that is, the rotating shaft mechanism 100 cannot be seen from the appearance of the electronic device, which improves the appearance of the mobile terminal. As shown in Figure 42 , when the first housing 200 and the second housing 300 are folded in the closed state, the decorative cover 21 of the rotating shaft mechanism 100 is exposed, which fills the gap between the first housing 200 and the second housing 300, so as to ensure the appearance of the electronic device. That is, whether the electronic device 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.

[0216] In the description of the present specification, specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in an appropriate manner.

[0217] The above description is merely illustrative of the application and is not intended to limit the scope of the application. Any changes or modifications that can be made to the application in accordance with the principles of the application should also be included within the scope of the application. Accordingly, the scope of the application should be determined by the scope of the claims.

Claims

1. A rotation shaft mechanism characterized by comprising: The utility model relates to a door and window shutter, including: A main body; First door panel, second door panel and intermediate door panel, first door panel, second door panel and intermediate door panel are located at the same side of main body, and first door panel and second door panel are oppositely arranged at the both sides of intermediate door panel; First connecting rod assembly and second connecting rod assembly, first connecting rod assembly and second connecting rod assembly are oppositely arranged at the both sides of main body; First meshing transmission structure and second meshing transmission structure; First connecting rod assembly includes: first shell connecting rod, first gear connecting rod and first auxiliary connecting rod; The one end close to main body of first gear connecting rod is rotatably connected with main body, and the one end away from main body of first gear connecting rod is slidably connected with first shell connecting rod, and the one end close to intermediate door panel of first gear connecting rod is also meshingly connected with intermediate door panel through first meshing transmission structure, one end of first door panel is rotatably connected with first shell connecting rod, the other end of first door panel is rotatably connected with one end of first auxiliary connecting rod, the other end of first auxiliary connecting rod is rotatably connected with main body, and first auxiliary connecting rod is slidably connected with intermediate door panel; Second connecting rod assembly includes: second shell connecting rod, second gear connecting rod and second auxiliary connecting rod; The one end close to main body of second gear connecting rod is rotatably connected with main body, and the one end away from main body of second gear connecting rod is slidably connected with second shell connecting rod, and the one end close to intermediate door panel of second gear connecting rod is also meshingly connected with intermediate door panel through second meshing transmission structure, one end of second door panel is rotatably connected with second shell connecting rod, the other end of second door panel is rotatably connected with one end of second auxiliary connecting rod, the other end of second auxiliary connecting rod is rotatably connected with main body, and second auxiliary connecting rod is slidably connected with intermediate door panel; When first gear connecting rod and second gear connecting rod rotate towards each other, through meshingly connected first gear connecting rod and intermediate door panel and meshingly connected second gear connecting rod and intermediate door panel, intermediate door panel is driven to move towards main body, and first shell connecting rod drives the one end close to main body of first door panel to move away from main body, and second shell connecting rod drives the one end close to main body of second door panel to move away from main body; When first gear connecting rod and second gear connecting rod rotate away from each other, through meshingly connected first gear connecting rod and intermediate door panel and meshingly connected second gear connecting rod and intermediate door panel, intermediate door panel is driven to move away from main body, and first shell connecting rod drives the one end close to main body of first door panel to move towards main body, and second shell connecting rod drives the one end close to main body of second door panel to move towards main body.

2. The rotation shaft mechanism according to claim 1, wherein The rotating shaft mechanism further includes: first push screen structure; When the first gear link and the second gear link rotate away from each other, driving the first door plate and the second door plate to rotate away from each other, the first push screen structure is used to apply a pushing force to the first shell link in a direction away from the first gear link.

3. The rotation axis mechanism according to claim 2, wherein The first push screen structure comprises: a mounting hole formed in the first gear link, and a support rod formed on the first shell link and capable of extending into the mounting hole; The first push screen structure further comprises an elastic member, and one end of the elastic member is sleeved on the support rod; When the first door plate and the second door plate rotate away from each other, the support rod can extend into the mounting hole, and the other end of the elastic member abuts against the mounting hole to apply an elastic pushing force to the first shell link in a direction away from the first gear link.

4. The rotation axis mechanism according to claim 3, wherein The first shell link is provided with an inlay groove, the first gear link is slidingly arranged in the inlay groove, the support rod is arranged in the inlay groove, and the extension direction of the support rod is consistent with the relative sliding direction of the first gear link and the first shell link. The mounting hole is formed on the surface of the first gear link opposite to the support rod.

5. The rotating shaft mechanism according to any one of claims 1-4, wherein The first meshing transmission structure comprises: a first gear formed on one end of the first gear link close to the intermediate door plate, and a first rack formed on the intermediate door plate and externally meshing with the first gear; And / or, The second meshing transmission structure comprises: a second gear formed on one end of the second gear link close to the intermediate door plate, and a second rack formed on the intermediate door plate and externally meshing with the second gear; The rotation axis of the first gear is parallel to the rotation axis of the first gear link, the rotation axis of the second gear is parallel to the rotation axis of the second gear link, and the extension direction of the first rack and the extension direction of the second rack are both perpendicular to the length direction of the intermediate door plate.

6. The revolute mechanism according to any one of claims 1-4, wherein The rotating shaft mechanism further comprises: a guide structure for guiding the intermediate door plate to move relative to the main body in a direction perpendicular to the length direction of the intermediate door plate.

7. The rotation axis mechanism according to claim 6, wherein The guide structure comprises: a guide hole formed in the main body and a guide block slidingly arranged in the guide hole; The guide hole extends in a direction perpendicular to the length direction of the intermediate door plate; The guide block is fixed to the intermediate door plate.

8. The revolute mechanism according to any one of claims 1-4, wherein The rotating shaft mechanism further comprises: a first damping structure arranged between the first shell link and the main body; One end of the first damping structure close to the first shell link is slidingly connected to the first shell link, and the other end of the first damping structure close to the main body is rotationally connected to the main body; When the first shell link drives the first door plate to rotate relative to the main body, the first damping structure is used to apply a resistance to the first shell link.

9. The rotation shaft mechanism according to claim 8, wherein The first damping structure comprises: a first cam link, a first cam, a first damping pin shaft, and a first damping elastic member; The first damping pin shaft is fixed on the main body, and the extension direction of the first damping pin shaft is consistent with the direction of the rotation axis of the first gear connecting rod relative to the main body; The first cam is slidably arranged on the first damping pin shaft; One end of the first cam connecting rod close to the main body is rotatably arranged on the first damping pin shaft, and the other end of the first cam connecting rod away from the main body is slidably connected with the first shell connecting rod, and the end of the first cam connecting rod close to the main body is provided with a first damping surface and a second damping surface opposite to the first cam, and the first cam is provided with a third damping surface and a fourth damping surface; The first damping elastic member is sleeved on the first damping pin shaft; When the first shell connecting rod drives the first cam connecting rod to rotate to the abutting position of the first damping surface and the third damping surface, the first damping elastic member is in an energy storage state to generate a force on the first cam connecting rod to make the first door panel flatten; When the first shell connecting rod drives the first cam connecting rod to rotate to the abutting position of the second damping surface and the fourth damping surface, the first damping elastic member is in an energy storage state to generate a force on the first cam connecting rod to make the first door panel close.

10. The hinge mechanism according to claim 9, wherein the first cam connecting rod comprises: a cam portion rotatably arranged on the first damping pin shaft; a first connecting rod portion and a second connecting rod portion arranged in parallel, and one end of the first connecting rod portion and one end of the second connecting rod portion are connected with the cam portion, and the other end of the first connecting rod portion and the other end of the second connecting rod portion are slidably connected with the first shell connecting rod. The first auxiliary connecting rod has opposite first and second surfaces; 11. The revolute mechanism according to any one of claims 1-4, wherein, The first surface close to the first door panel is provided with a first hinge shaft, and the surface of the first door panel opposite to the main body and close to the first auxiliary connecting rod is provided with a first hinge hole, and the first hinge shaft rotates relative to the first hinge hole to realize the rotational connection of the first door panel and the first auxiliary connecting rod; The first surface close to the main body is provided with a second hinge shaft, and the main body close to the first auxiliary connecting rod is provided with a second hinge hole, and the second hinge shaft rotates relative to the second hinge hole to realize the rotational connection of the main body and the first auxiliary connecting rod. The second surface is provided with a track groove, and the intermediate door panel close to the first auxiliary connecting rod is provided with a sliding pin, and the sliding pin slides relative to the track groove to realize the sliding connection of the intermediate door panel and the first auxiliary connecting rod.

12. The rotation mechanism according to claim 11, wherein The surface of the first door panel opposite to the main body has a first door panel arc-shaped protrusion extending towards the first shell connecting rod, the first shell connecting rod is provided with a first arc-shaped clamping groove for assembling the first door panel arc-shaped protrusion, and the first door panel arc-shaped protrusion slides relative to the first arc-shaped clamping groove to realize the rotational connection of the first door panel and the first shell connecting rod.

13. The revolute mechanism according to any one of claims 1-4, wherein ​ 14. The revolute mechanism according to any one of claims 1-4, wherein, When the first gear connecting rod and the second gear connecting rod rotate away from each other, the first door plate, the intermediate door plate and the second door plate are in the same plane to form a support surface.

15. The revolute mechanism according to any one of claims 1-4, wherein, When the first gear connecting rod and the second gear connecting rod rotate towards each other, the first door plate, the intermediate door plate and the second door plate enclose a screen containing space.

16. An electronic device, comprising: The application relates to a rotating shaft mechanism, comprising: a first shell, a second shell, a flexible screen and the rotating shaft mechanism as claimed in any one of claims 1-15; wherein the first shell is fixedly connected with the first shell connecting rod, and the second shell is fixedly connected with the second shell connecting rod; the first shell comprises a first surface, the second shell comprises a second surface, the flexible screen continuously covers the first surface of the first shell, the rotating shaft mechanism and the second surface of the second shell, and the flexible screen is fixedly connected with the first surface of the first shell and the second surface of the second shell respectively.

17. The electronic device of claim 16, wherein, the flexible screen comprises a first region, a second region, a third region, a fourth region and a fifth region which are continuously arranged; the first region is fixedly connected with the first surface of the first shell; the second region is fixedly connected with a surface of the first door plate facing the flexible screen; the third region is oppositely arranged with the intermediate door plate, and the third region can move relative to the intermediate door plate; the fourth region is fixedly connected with a surface of the second door plate facing the flexible screen; and the fifth region is fixedly connected with the second surface of the second shell.

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