CN218882776U - Folding device and electronic equipment - Google Patents

Abstract

The folding device comprises a main shaft, a connecting piece and a linkage piece, wherein the main shaft and the connecting piece are arranged along the axial direction perpendicular to the main shaft, the main shaft is rotatably connected with the connecting piece through at least part of the linkage piece, the linkage piece comprises a first end, the first end is rotatably connected with the main shaft, a first cam and a second cam are movably arranged on the main shaft, and the first cam and the second cam are respectively positioned at two opposite sides of the first end along the axial direction of the main shaft; the first cam and the second cam are both connected with the first end in an embedded mode, the embedded area of the first cam and the first end is larger than that of the second cam and the first end, and first friction force between the first cam and the first end is larger than second friction force between the second cam and the first end. Due to the fact that the friction force between the first cam and the first end is increased, the hovering effect of the folding device at any angle can be improved. Therefore, the folding device and the electronic equipment provided by the application have better hovering effect.

Description

Folding device and electronic equipment

Technical Field

The present application relates to the field of terminal technologies, and in particular, to a folding device and an electronic apparatus.

Background

With the gradual maturity of flexible screen technology, the display mode of electronic equipment is promoted to change greatly. For example, with the advent of foldable electronic devices such as foldable mobile phones and computers, the flexible screen of the foldable electronic device can be flexibly changed in switching modes according to different use scenes, and meanwhile, the flexible screen has a high screen occupation ratio. For example, a foldable mobile phone can be only the size of a traditional mobile phone after being folded, so that the mobile phone is convenient to carry, and can have a flat display size after being unfolded.

In the related art, the folding electronic device may include a flat state, a folded state, and an intermediate state between the flat state and the folded state, which is required to stably hover in the flat state, the folded state, or the intermediate state, thereby facilitating the use of the folding electronic device by a user. The folding electronic equipment can comprise two middle frames and a folding device, and the two middle frames are in running fit through the folding device, so that the two middle frames can rotate relatively, and the two middle frames can be mutually overlapped or unfolded.

However, the hovering performance of the above folding electronic device at any angle is to be improved.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides a folding device and electronic equipment, and the folding device has a good hovering effect at any angle, so that the electronic equipment can be guaranteed to hover at any angle.

The folding device comprises a main shaft, a connecting piece and a linkage piece, wherein the main shaft and the connecting piece are arranged along the axial direction perpendicular to the main shaft, the main shaft is rotationally connected with the connecting piece through at least part of the linkage piece, the linkage piece comprises a first end, the first end is rotationally connected with the main shaft, a first cam and a second cam are movably arranged on the main shaft, and the first cam and the second cam are respectively positioned on two opposite sides of the first end along the axial direction of the main shaft; the first cam and the second cam are both connected with the first end in an embedded mode, the embedded area of the first cam and the first end is larger than that of the second cam and the first end, and first friction force between the first cam and the first end is larger than second friction force between the second cam and the first end.

The application provides a folding device, folding device can include main shaft, connecting piece and linkage, and main shaft and connecting piece are arranged along the axial of perpendicular to main shaft, rotate through at least partial linkage between main shaft and the connecting piece and are connected. The linkage piece comprises a first end, and the first end is rotatably connected with the main shaft. The main shaft is movably provided with a first cam and a second cam, and the first cam and the second cam are respectively positioned at two opposite sides of the first end along the axial direction of the main shaft. The first cam and the second cam are both connected with the first end in an embedded mode, so that the folding device can achieve hovering. The engaging area of the first cam with the first end is larger than the engaging area of the second cam with the first end, and the friction force between the first cam and the first end (i.e. the first friction force) is larger than the friction force between the second cam and the first end (i.e. the second friction force). Therefore, the friction force applied to the unit area of the embedded surface of the first cam can be improved, the abrasion degree of the first cam is increased, the abrasion resistance of the first cam can be fully utilized, and the waste of the abrasion resistance of the first cam is avoided. In addition, the friction force between the first cam and the first end is increased, so that the hovering effect of the folding device at any angle can be improved, and the use hand feeling of a user is improved.

In one possible embodiment, the first cam and the second cam are movably arranged on the main shaft along the axial direction of the main shaft, the first cam has a first fitting surface on one side facing the first end, the first end has a first mating surface on one side facing the first fitting surface, and the first fitting surface is fitted with the first mating surface; the side of the second cam facing the first end is provided with a second embedding surface, the side of the first end facing the second embedding surface is provided with a second matching surface, and the second embedding surface is embedded with the second matching surface; the area of the first embedding surface is larger than that of the second embedding surface, and a first friction force between the first embedding surface and the first matching surface is larger than a second friction force between the second embedding surface and the second matching surface.

In one possible embodiment, the ratio of the first frictional force to the first fitting surface area is equal to the ratio of the second frictional force to the second fitting surface area.

Therefore, the wear degrees of the first cam and the second cam are consistent, the failure time of the first cam and the failure time of the second cam are close, and the wear-resisting performance of the first cam and the wear-resisting performance of the second cam are fully utilized.

In a possible embodiment, a first elastic part, a second elastic part and a rotating shaft are arranged on the main shaft, the first elastic part is positioned on one side of the first cam, which is far away from the first end, and the second elastic part is positioned on one side of the second cam, which is far away from the first end; the axial extension of main shaft is followed to the pivot, and first end is rotated through pivot and main shaft and is connected, and the pivot is worn to establish in first elastic component, first cam, first end, second cam and second elastic component.

Therefore, in the folding process of the folding device, the first cam is embedded with the first end through the first elastic piece and the second elastic piece, and the second cam is embedded with the first end, so that the folding device is favorable for hovering.

In a possible embodiment, the cam assembly further comprises a first assembly member and a second assembly member, the first assembly member is positioned on a side of the first elastic member facing away from the first cam, and the second assembly member is positioned on a side of the second elastic member facing away from the second cam; one end of the first elastic piece is connected with the first assembly piece, the other end of the first elastic piece is connected with the first cam, one end of the second elastic piece is connected with the second assembly piece, and the other end of the second elastic piece is connected with the second cam.

In this way, the first and second fittings may restrain the damping assembly, the first end, etc. located therein.

In a possible embodiment, at least a part of the rotating shaft is movably arranged on the main shaft along the axial direction of the main shaft.

In a possible embodiment, a third assembly part is arranged on the rotating shaft, the third assembly part is positioned between the first elastic part and the first cam, and the first elastic part is connected with the first cam through the third assembly part; one end of the rotating shaft is movably inserted into the first assembly part along the axial direction of the main shaft, and the other end of the rotating shaft is connected with the second assembly part.

Therefore, the elastic force of the second elastic piece can be transmitted to the first cam through the rotating shaft, so that the first cam is subjected to the elastic force of the first elastic piece and the second elastic piece, the second cam is subjected to the elastic force of the second elastic piece, and the first friction force can be larger than the second friction force in the folding process of the folding device.

In a possible embodiment, at least a part of the rotating shaft is arranged on the main shaft in a stationary manner along the axial direction of the main shaft, the rotating shaft is connected with the main shaft through at least one of the first assembly part and the second assembly part, and the elastic force of the first elastic part is greater than that of the second elastic part.

Therefore, the assembling stability of the rotating shaft and the main shaft is high, and the first friction force can be larger than the second friction force in the folding process of the folding device.

In a possible embodiment, the first end includes a first rotating portion and a second rotating portion which are interlocked with each other, one ends of the first rotating portion and the second rotating portion, which are close to the first cam, are respectively engaged with different positions of the first cam, one end of the first rotating portion, which is close to the second cam, is engaged with the second cam, and the second rotating portion is spaced from the second cam.

Thus, the fitting area of the first end and the first cam is larger than the fitting area of the first end and the second cam.

In a possible embodiment, the first rotation part is provided with a toothing and the second rotation part comprises a gear wheel, the toothing meshing with the gear wheel.

In this way, the synchronous rotation of the first rotating portion and the second rotating portion can be achieved.

In a possible embodiment, the main shaft is provided with a mounting part, the mounting part is located between the first cam and the second cam, the first rotating part comprises a first extending part and a second extending part which are arranged at intervals along the axial direction of the main shaft, the first extending part is located on one side of the second extending part close to the first cam, and part of the mounting part is located between the first extending part and the second extending part.

In this way, the mounting may be used in connection with the spindle to limit the damping assembly.

In a possible embodiment, the mounting member includes a fixing portion and a limiting portion connected to each other, the limiting portion is located between the first extending portion and the second extending portion, the mounting member is connected to the spindle through the fixing portion, the second rotating portion is located between the fixing portion and the first cam, and the fixing portion has a gap with the second cam.

Thus, the structure of the mounting member is simple.

In a possible implementation manner, the limiting part is provided with a first limiting structure, the first rotating part is provided with a second limiting structure, and when the folding device is in the flattening state, the first limiting structure and the second limiting structure are abutted to form a limiting state of the limiting part on the first rotating part.

Thus, the limiting part can be used for preventing the linkage part from being folded over so as to avoid the folding device from being folded over.

In a possible embodiment, the first rotating portion is movably disposed on the main shaft along an axial direction of the main shaft, and a surface of the first extending portion facing the second cam abuts against the limiting portion.

Therefore, the first extending part is abutted with the limiting part, and the damping of the linkage part can be increased, so that the hovering effect of the folding device is improved.

In a possible embodiment, the first rotating part is movably arranged on the main shaft along the axial direction of the main shaft, the linkage piece comprises a second end connected with the first rotating part, and the second end is connected with the connecting piece in a sliding manner;

the first extension part has the clearance towards the face and the spacing portion of second cam one side, and the linkage includes first terminal surface and the second terminal surface that sets up along the axial interval of main shaft, and the first terminal surface of first rotation portion and second rotation portion forms first fitting surface, and the second terminal surface of first rotation portion forms the second fitting surface, and the second terminal surface and the connecting piece butt of second end.

Therefore, the second end face of the second end is abutted to the connecting piece, the damping of the linkage piece can be increased, and the hovering effect of the folding device is improved.

A second aspect of this application provides an electronic equipment, folding device among electronic equipment includes flexible screen, two at least middlings and the above-mentioned first aspect, and two adjacent middlings are located folding device's both sides respectively, and rotate through folding device and connect, and the flexible screen is laid on folding device and midframe.

The application provides an electronic equipment, electronic equipment can include folding device, and folding device can include main shaft, connecting piece and linkage, and main shaft and connecting piece are arranged along the axial of perpendicular to main shaft, rotate through at least part linkage between main shaft and the connecting piece and are connected. The linkage piece comprises a first end, and the first end is rotatably connected with the main shaft. The main shaft is movably provided with a first cam and a second cam, and the first cam and the second cam are respectively positioned at two opposite sides of the first end along the axial direction of the main shaft. The first cam and the second cam are both connected with the first end in an embedded mode, so that the folding device can achieve hovering. The engaging area of the first cam with the first end is larger than the engaging area of the second cam with the first end, and the friction force between the first cam and the first end (i.e. the first friction force) is larger than the friction force between the second cam and the first end (i.e. the second friction force). Therefore, the friction force received by the embedded surface of the unit area of the first cam can be improved, the abrasion degree of the first cam is increased, the abrasion resistance of the first cam can be fully utilized, and the waste of the abrasion resistance of the first cam is avoided. In addition, the friction force between the first cam and the first end is increased, so that the hovering effect of the folding device at any angle can be improved, and the use hand feeling of a user is improved.

The construction and other objects and advantages of the present application will be more apparent from the description of the preferred embodiments taken in conjunction with the accompanying drawings.

Drawings

Fig. 1 is a schematic structural diagram of an electronic device provided in an embodiment of the present application in a folded state;

fig. 2 is a schematic structural diagram of an electronic device in an intermediate state according to an embodiment of the present application;

fig. 3 is a schematic structural diagram of an electronic device in a flattened state according to an embodiment of the present application;

fig. 4 is an exploded view of an electronic device provided in an embodiment of the present application;

FIG. 5 is a rear view of a folding apparatus provided in accordance with an embodiment of the present application;

FIG. 6 is a front view of a folding device provided in accordance with an embodiment of the present application;

FIG. 7 is an enlarged view of portion A of FIG. 5;

FIG. 8 is a schematic structural view of a folding apparatus provided in accordance with an embodiment of the present application without an outer shaft installed;

FIG. 9 is a side view of a folding device provided in accordance with an embodiment of the present application in a folded state;

FIG. 10 is another schematic view of the folding apparatus provided in accordance with the exemplary embodiment of the present application without the outer shaft installed;

fig. 11 is a schematic structural diagram of a folding device provided in an embodiment of the present application with a shaft cover mounted thereon;

FIG. 12 is a schematic illustration of a disassembled structure of an inner shaft, a damping assembly and a linkage provided by an embodiment of the present application;

FIG. 13 is a schematic structural view of an inner shaft, a damping assembly and a linkage provided in an embodiment of the present application in a flattened state;

FIG. 14 is a schematic view of an assembly of a linkage member and a swinging member provided by an embodiment of the present application;

FIG. 15 is a schematic structural diagram of a damping assembly, a connecting member, a linkage member and a swinging member according to an embodiment of the present application;

FIG. 16 is a schematic structural diagram of a damping assembly and a linkage provided by an embodiment of the present application;

FIG. 17 is a schematic illustration of a disassembled structure of a damping assembly and a linkage provided by an embodiment of the present application;

FIG. 18 is a partial schematic structural view of a damping assembly and a linkage provided in accordance with an embodiment of the present application;

FIG. 19 is a schematic illustration of another disassembled structure of a damping assembly and a linkage provided by an embodiment of the present application;

FIG. 20 is a schematic structural view of a linkage provided in accordance with an embodiment of the present application;

FIG. 21 is a schematic illustration showing a disassembled structure of a first cam, a second cam and a linkage according to an embodiment of the present disclosure;

FIG. 22 is a schematic structural view of a mounting member provided in an embodiment of the present application;

FIG. 23 is a cross-sectional view of the spindle, linkage, and mount provided by an embodiment of the present application in a flattened condition at the mount;

FIG. 24 is an enlarged partial schematic view of FIG. 23;

FIG. 25 is a schematic illustration of a disassembled configuration of a linkage member and a connecting member according to an embodiment of the present application;

FIG. 26 is an enlarged partial schematic view of FIG. 25;

FIG. 27 is a cross-sectional view of the spindle and pendulum members of the present application at the arcuate guide rails in a flattened condition;

fig. 28 is a schematic view of a disassembled structure of the inner shaft and the swinging member provided in the embodiment of the present application.

Description of the reference numerals:

100: an electronic device; 110: a flexible screen; 130: a middle frame;

131: a first middle frame; 132: a second middle frame; 134: a first frame;

135: a second frame; 137: a first middle plate; 138: a second middle plate;

140: a rear cover; 150: a circuit board; 160: a battery;

170: a shaft cover; 200: a folding device; 200a: rong Bing space;

210: a main shaft; 211: an inner shaft; 212: an outer shaft;

213: a first mounting position; 214: an arc-shaped guide rail; 220: a damping assembly;

221: a first cam; 2211: a first fitting surface; 222: a second cam;

2221: a second fitting surface; 223: a first elastic member; 224: a second elastic member;

225: a mounting member; 2251: a fixed part; 2252: a limiting part;

2253: a first limit structure; 2254: a first limiting surface; 227: a first rotating shaft;

228: a second rotating shaft; 2281: a first sub-rotating shaft; 2282: a second sub-rotating shaft;

230: a connecting member; 230a: a first connecting member; 230b: a second connecting member;

231: a positioning groove; 2311: a first slot sidewall; 2312: a first slot bottom wall;

232: a sliding groove; 2321: a trough top wall; 2322: a second trench sidewall;

2323: a second slot bottom wall; 240: a linkage member; 240a: a first linkage member;

240b: a second linkage member; 241: a first end; 242: a first rotating section;

2421: a first extension portion; 2422: a second extension portion; 2423: a tooth structure;

2424: a second limit structure; 2425: a second limiting surface; 2426: a second mounting location;

243: a second rotating part; 245: a second end; 2451: a slider;

2452: a slide arm; 2461: a first end face; 2462: a second end face;

2471: a first mating surface; 2472: a second mating surface; 250: a swinging member;

250a: a first swinging member; 250b, and (3): a second swinging member; 253: a third end;

2531: an arc-shaped portion; 254: a fourth end; 2543: a third rotating shaft;

260: a support member; 271: a first fitting member; 272: a second fitting member;

2721: a first fitting portion; 2722: a second fitting portion; 273: and a third assembly.

Detailed Description

The terminology used in the description of the embodiments section of the present application is for the purpose of describing particular embodiments of the present application only and is not intended to be limiting of the present application.

In the related art, the foldable electronic device may include two middle frames, and the two middle frames are rotatably connected by a folding device, so that the two middle frames can relatively rotate, and further, the two middle frames can be mutually overlapped or unfolded. The folding device can comprise a main shaft, a connecting piece and a linkage piece, wherein the main shaft and the connecting piece are rotatably connected through the linkage piece. The rotating end of the linkage part is rotationally connected with the main shaft, the main shaft is provided with a cam, the cam is positioned on one side of the rotating end along the axial direction of the main shaft, one side of the cam, which is far away from the rotating end, is provided with an elastic part, and the elastic part is used for pushing the cam to be embedded with the rotating end. One side of the cam facing the rotating end is provided with a jogged surface, one side of the rotating end facing the cam is provided with a matching surface, and the cam and the rotating end are connected in a jogged mode through the jogged surface and the matching surface, so that the folding device can achieve hovering conveniently.

However, because the cam is only located at one side of the rotating end along the axial direction of the main shaft, the embedding area between the cam and the rotating end is small, and the embedding force between the cam and the rotating end is small, the limiting effect of the cam on the rotating end is poor, and the hovering effect of the folding device is poor. Can set up first cam and second cam respectively in the relative both sides of the axial of rotation end along the main shaft, first cam and second cam all are connected with rotation end gomphosis to through the quantity that increases the cam in order to promote the effect of hovering of folding device, in order to promote the effect of hovering of electronic equipment under arbitrary angle. The elastic piece is located on one side, away from the rotating end, of the first cam, the first cam and the rotating end are both movably arranged along the axial direction of the main shaft, the elastic piece pushes the first cam to be close to the rotating end so that the first cam is embedded with the rotating end, and pushes the rotating end to be close to the second cam so that the rotating end is embedded with the second cam. The first cam and the second cam are both subjected to the elastic force of the elastic piece, and the elastic force of the first cam and the elastic force of the second cam are the same. When the area of the fitting surface of the first cam is larger than that of the second cam, the elastic force received by the fitting surface per unit area of the first cam is smaller than that received by the fitting surface per unit area of the second cam, and the frictional force received by the fitting surface per unit area of the first cam is smaller than that received by the fitting surface per unit area of the second cam during the folding process of the folding device, so that the degree of wear of the first cam is smaller than that of the second cam. When the second cam wears to fail, the folding device cannot maintain effective hovering, while the first cam is not worn to fail, thereby wasting the wear resistance of the first cam.

Based on the above problem, an embodiment of the present application provides a folding device and an electronic apparatus, where the folding device may include a main shaft, a connecting piece, and a linkage piece, the main shaft and the connecting piece are arranged along an axial direction perpendicular to the main shaft, and the main shaft and the connecting piece are rotatably connected through at least part of the linkage piece. The linkage piece comprises a first end which is rotatably connected with the main shaft. The main shaft is movably provided with a first cam and a second cam, and the first cam and the second cam are respectively positioned at two opposite sides of the first end along the axial direction of the main shaft. The first cam and the second cam are both connected with the first end in an embedded mode, and the number of the cams (the first cam and the second cam) embedded with the first end is large, so that the hovering effect of the folding device and the electronic equipment at any angle can be improved. The embedding area of the first cam and the first end is larger than that of the second cam and the first end, and the friction force between the first cam and the first end is larger than that between the second cam and the first end. Therefore, the friction force applied to the unit area of the embedded surface of the first cam can be improved, the abrasion degree of the first cam is increased, the abrasion resistance of the first cam can be fully utilized, and the waste of the abrasion resistance of the first cam is avoided. In addition, the friction force between the first cam and the first end is increased, so that the hovering effect of the folding device and the electronic equipment at any angle can be further improved, and the use hand feeling of a user is improved.

An electronic device 100 provided in an embodiment of the present application will be described below with reference to fig. 1 to 28.

The embodiment of the present application provides an electronic device 100, where the electronic device 100 may include, but is not limited to, a foldable fixed terminal or a mobile terminal such as a mobile phone, a tablet computer, a notebook computer, an ultra-mobile personal computer (UMPC), a handheld computer, a touch television, an intercom, a netbook, a POS machine, a Personal Digital Assistant (PDA), a wearable device, a virtual reality device, and the like.

In the embodiment of the present application, the foldable electronic device 100 is taken as an example of a foldable mobile phone, where the foldable mobile phone may be a foldable mobile phone with a folded screen outward, or the foldable mobile phone may also be a foldable mobile phone with a folded screen inward and an additional outer screen inward. The following takes a foldable mobile phone with a folded screen as an example.

Referring to fig. 1 and 2, the foldable electronic device 100 may include at least a folding apparatus 200 and a middle frame 130.

Wherein, the number of the middle frames 130 is at least one, and one middle frame 130 can be rotatably connected with the folding device 200, so that the folding device 200 and the middle frame 130 can be folded or unfolded.

Alternatively, the middle frame 130 may include two, for example, the two middle frames 130 may include a first middle frame 131 and a second middle frame 132, the first middle frame 131 and the second middle frame 132 are located at both sides of the folding device 200, and the first middle frame 131 and the second middle frame 132 are respectively connected to the folding device 200. The two middle frames 130 are rotatably connected by the folding device 200, so that the two middle frames 130 can rotate relatively, that is, the first middle frame 131 and the second middle frame 132 can rotate relatively.

Referring to fig. 1, the first middle frame 131 and the second middle frame 132 can be folded relatively to a closed state, for example, when the first middle frame 131 and the second middle frame 132 are in the closed state, they can be folded (a slight deviation is also allowed), and at this time, the electronic device 100 is in the closed state, also called a folded state.

Referring to fig. 3, the first middle frame 131 and the second middle frame 132 can be relatively unfolded to an open state. Illustratively, the first middle frame 131 and the second middle frame 132 may be substantially 180 ° (some deviation is also allowed, for example, 165 °, 177 °, or 185 °) when they are in the open state, which is also called the flat state, of the electronic device 100.

Referring to fig. 2, the first middle frame 131 and the second middle frame 132 can be relatively rotated (folded or unfolded) to an intermediate state, so that the electronic device 100 is in the intermediate state. The intermediate state may be any state between the open state and the closed state. That is, the electronic device 100 can be switched between the open state (i.e., the unfolded state) and the closed state (i.e., the folded state) by the movement of the folding apparatus 200.

In the embodiment of the present application, as shown in fig. 1 and fig. 3, when the electronic device 100 is in the flat state or the folded state, the electronic device 100 includes a first direction X, and the first direction X may be a width direction of the electronic device 100; the electronic device 100 includes a second direction Y, which may be a length direction of the electronic device 100; the electronic device 100 includes a third direction Z, which may be a thickness direction of the electronic device 100. The first direction X, the second direction Y, and the third direction Z are different, and may be perpendicular to each other, for example. The length, width, and thickness in the embodiments of the present application are for convenience of description only, and do not imply any limitation on the dimensions. For example, the length may be greater than, equal to, or less than the width. The width direction, the length direction, and the thickness direction of the electronic device 100 may be the width direction, the length direction, and the thickness direction of the folding device 200.

The electronic device 100 may include only two middle frames 130, that is, the number of the first middle frame 131 and the second middle frame 132 may be one, so that when the electronic device 100 is in the folded state, the first middle frame 131 and the second middle frame 132 are folded into two layers, as shown in fig. 3 and 4, the electronic device 100 includes one first middle frame 131, one second middle frame 132, and a folding apparatus 200, the first middle frame 131 and the second middle frame 132 are rotatably connected by the folding apparatus 200, and the first middle frame 131 and the second middle frame 132 are folded into two layers, so that the electronic device 100 is in a two-layer form.

Alternatively, the electronic device 100 may also include a plurality of middle frames 130, that is, the number of the first middle frame 131, the second middle frame 132 and the folding device 200 may be multiple, and the adjacent first middle frame 131 and the second middle frame 132 are connected by one folding device 200, so that the electronic device 100 may be folded into a multi-layer form. For example, the electronic device 100 may include two first middle frames 131, one second middle frame 132, and two folding devices 200, where the two first middle frames 131 are located at two sides of the second middle frame 132, and the two first middle frames 131 are respectively rotatably connected to the second middle frame 132 through one folding device 200, one of the first middle frames 131 may be folded relative to the second middle frame 132, and the other first middle frame 131 may also be folded relative to the second middle frame 132, so that when the electronic device 100 is in the folded state, the first middle frame 131 and the second middle frame 132 are folded relative to each other to form a three-layer configuration. When one of the first middle frames 131 and the second middle frame 132 is relatively unfolded to be in a flat state (e.g., they are approximately 180 °), the electronic device 100 is in the flat state.

The embodiment of the present application takes the electronic device 100 including two middle frames 130 as an example for explanation.

Referring to fig. 2 and 3, the electronic device 100 may further include a foldable flexible screen 110, wherein the flexible screen 110 may be laid on one middle frame 130, or the flexible screen 110 may be laid on two middle frames 130. In addition, the flexible screen 110 may also be laid on the folding device 200. Specifically, the flexible screen 110 may be disposed on the same side surface of the first middle frame 131, the second middle frame 132, and the folding device 200. When the first middle frame 131 and the second middle frame 132 are folded oppositely, the flexible screen 110 is attached to the first middle frame 131 and the second middle frame 132, a part of the flexible screen 110 opposite to the folding device 200 is bent, the folding device 200 encloses a Rong Bing space 200a (fig. 9), and the bent flexible screen 110 is at least partially positioned in the screen accommodating space 200a. When the first middle frame 131 and the second middle frame 132 are unfolded relatively, the flexible screen 110 is also unfolded.

As shown in fig. 2 and 3, for the foldable electronic device 100 in which the screen is folded inward, the flexible screen 110 is disposed on the inner side surfaces of the first middle frame 131, the second middle frame 132, and the folding means 200. For the foldable electronic device 100 in which the screen is folded outward, the flexible screen 110 is disposed on the outer side surfaces of the first middle frame 131, the second middle frame 132, and the folding means 200. In the embodiment of the present application, the flexible screen 110 is located on the inner side surfaces of the first middle frame 131, the second middle frame 132 and the folding device 200.

When the electronic device 100 is in the folded state, two adjacent and opposite surfaces of the first middle frame 131 and the second middle frame 132 are inner side surfaces of the first middle frame 131 and the second middle frame 132, respectively, and a surface of the folding device 200 on the same side as the inner side surfaces of the first middle frame 131 and the second middle frame 132 is an inner side surface of the folding device 200. Two surfaces of the first middle frame 131 and the second middle frame 132, which are opposite to each other, are outer side surfaces of the first middle frame 131 and the second middle frame 132, respectively, and a surface of the folding device 200 on the same side as the outer side surfaces of the first middle frame 131 and the second middle frame 132 is an outer side surface of the folding device 200.

In some embodiments, the foldable electronic device 100 may also be a notebook computer, and the notebook computer may include a first middle frame 131 and a second middle frame 132, and the first middle frame 131 and the second middle frame 132 can be relatively folded to a closed state, so that the notebook computer is in the closed state (i.e., a folded state). Accordingly, when the first middle frame 131 and the second middle frame 132 are relatively unfolded from the folded state to the unfolded state, the notebook computer is in the unfolded state (i.e., the unfolded state). Wherein, in the flat state, at least a part of the flexible screen 110 on the first middle frame 131 can be used for displaying images and the like, and at least a part of the flexible screen 110 on the second middle frame 132 can be used as a virtual keyboard and the like.

Referring to fig. 3 and 4, the electronic device 100 may include a rear cover 140, for example, the flexible screen 110 is located on one side of the two middle frames 130, and the rear cover 140 is located on the other side of the two middle frames 130.

In the embodiment of the present application, the first middle plate 131 may include a first middle plate 137 and a first middle plate 134, and the first middle plate 134 is surrounded on an outer circumferential edge of the first middle plate 137. Second middle frame 132 may also include a second middle plate 138 and a second rim 135, where second rim 135 surrounds a peripheral edge of second middle plate 138.

Referring to fig. 4, the electronic device 100 may further include a circuit board 150 and a battery 160, wherein the battery 160 may be connected to the charging management module and the circuit board 150 through a power management module, and the power management module receives an input of the battery 160 and/or the charging management module and supplies power to the processor, the internal memory, the external memory, the foldable flexible screen 110, the camera module, the communication module, and the like. The power management module may also be used to monitor parameters such as battery 160 capacity, battery 160 cycle count, battery 160 state of health (leakage, impedance), etc. In other embodiments, the power management module may also be disposed in the processor of the circuit board 150. In other embodiments, the power management module and the charging management module may be disposed in the same device.

It is to be understood that the illustrated structure of the embodiment of the present application does not specifically limit the electronic device 100. In other embodiments of the present application, electronic device 100 may include more or fewer components than shown, or some components may be combined, some components may be split, or a different arrangement of components. For example, the electronic device 100 may further include a camera (e.g., a front camera and a rear camera) and a flash.

The folding device 200 provided in the embodiment of the present application will be explained below.

In the folding apparatus 200 provided in the embodiment of the present application, as shown in fig. 5 and fig. 6, the folding apparatus 200 may include a main shaft 210, the main shaft 210 may be used to carry a part of the structural members in the folding apparatus 200, and an axial direction of the main shaft 210 may be coincident with the second direction Y. The folding device 200 may further include two connecting members 230 located on opposite sides of the main shaft 210 along the first direction X, wherein both the two connecting members 230 are rotatably connected to the main shaft 210, so that the two connecting members 230 can rotate relatively, and the connecting members 230 can be fixedly connected to the middle frame 130 of the electronic apparatus 100.

Referring to fig. 7 and 8, the main shaft 210 and the connection member 230 are arranged in the first direction X. For example, the two connection members 230 are a first connection member 230a and a second connection member 230b, respectively, and the first connection member 230a, the main shaft 210, and the second connection member 230b are sequentially arranged along the first direction X. The first connecting member 230a and the second connecting member 230b are respectively located on two sides of the main shaft 210 along the first direction X. The first connector 230a may be disposed adjacent to the first middle frame 131 (fig. 3), and the first connector 230a may be fixedly connected to the first middle frame 131, so that the first middle frame 131 may be rotatably coupled to the main shaft 210 through the first connector 230 a. The second connecting member 230b can be disposed adjacent to the second middle frame 132 (fig. 3), and the second connecting member 230b can be fixedly connected to the second middle frame 132, so that the second middle frame 132 can be rotatably coupled to the main shaft 210 via the second connecting member 230 b.

The first connector 230a on one side of the main shaft 210 may include a plurality of sub-connectors, and the plurality of sub-connectors are spaced in the axial direction of the main shaft 210, for example, the first connector 230a may include three sub-connectors spaced in the axial direction of the main shaft 210. Alternatively, a plurality of sub-connectors may be connected together to form an integrated first connector 230a, and the sub-connectors may be connected by screwing, bonding, clipping, welding, or integrally forming. The second connection member 230b at the other side of the main shaft 210 may include a plurality of sub-connection members, which have the same principle as the first connection member 230a and thus will not be described in detail.

Specifically, when the two middle frames 130 are rotated relatively, for example, when the two middle frames 130 are unfolded relatively, the two middle frames 130 respectively drive the two connecting members 230 to be unfolded relatively, when the electronic device 100 is in the flat state, the first connecting member 230a, the second connecting member 230b and the main shaft 210 are in the open state, for example, adjacent two of the first connecting member 230a, the main shaft 210 and the second connecting member 230b may be approximately 180 °, and the folding device 200 is also in the flat state.

Referring to fig. 9, when the two middle frames 130 are folded relatively, the two middle frames 130 respectively drive the two connecting members 230 to fold relatively, and when the electronic device 100 is in the folded state, the first connecting member 230a and the second connecting member 230b are folded to the closed state, and at this time, the folding apparatus 200 is also in the folded state. The first connection member 230a, the main shaft 210 and the second connection member 230b together enclose a screen accommodating space 200a.

Referring to fig. 6 and 9, the folding device 200 may include supporting members 260, a side of each of the connecting members 230 facing the flexible screen 110 may be provided with the supporting member 260, and a side of each of the first and second connecting members 230a and 230b facing the flexible screen 110 is provided with the supporting member 260. At least a portion of flexible screen 110 may fit over support member 260, and support member 260 may provide a relatively flat surface for flexible screen 110 to provide better support. The support 260 extends in the axial direction of the main shaft 210. For example, the supporting member 260 may be a unitary structural member, or the supporting member 260 may be formed by splicing a plurality of sub-supporting members.

The spindle 210 according to the embodiment of the present application will be described below.

As shown in fig. 9 and 10, the main shaft 210 may include an inner shaft 211 and an outer shaft 212, and the inner shaft 211 and the outer shaft 212 may be relatively snapped. The inner shaft 211 is located between the outer shaft 212 and the flexible screen 110. The side of inner shaft 211 facing the side of flexible screen 110 may provide a relatively flat surface for flexible screen 110 to provide better support. The folding device 200 is in the folded state, and the inner shaft 211 is disposed closer to the screen accommodating space 200a than the outer shaft 212. Wherein the outer shaft 212 may include a plurality of sub-outer shafts which are arranged at intervals in the axial direction of the main shaft 210, for example, the outer shaft 212 may include three sub-outer shafts which are arranged at intervals in the axial direction of the main shaft 210. Alternatively, the sub-outer shafts are connected together to form an integral outer shaft 212, and the sub-outer shafts can be connected by screwing, bonding, clamping, welding or integral molding. Referring to fig. 9 and 11, the side of the outer shaft 212 facing away from the inner shaft 211 may be provided with a shaft cover 170, and the shaft cover 170 protects the folding device 200.

Referring to fig. 12 and 13, a damping assembly 220 may be disposed on the main shaft 210, and the damping assembly 220 is used for providing damping for the folding device 200 to suspend the folding device 200, so that the folding device 200 can be maintained in a certain state, such as a folded state, a flattened state, or an intermediate state. The inner shaft 211 can have a recessed first mounting location 213, the damping assembly 220 can be positioned within the first mounting location 213, and the outer shaft 212 can be snap-fit secured to the inner shaft 211 to secure the damping assembly 220 between the inner shaft 211 and the outer shaft 212. The number of the damping assemblies 220 may be 1, 2, 3, or 4 and more. When the damping assembly 220 is plural, the plural damping assemblies 220 are arranged at intervals in the axial direction of the main shaft 210. In embodiments where the outer shaft 212 includes multiple sub-outer shafts, one sub-outer shaft may correspond to securing one damping assembly 220 to the inner shaft 211.

In some embodiments, as shown in fig. 14 and 15, the folding device 200 may include a linkage 240, and the spindle 210 and the connector 230 may be rotatably connected by the linkage 240. For example, at least one linkage 240 may be disposed between each connection member 230 and the main shaft 210, and the number of linkages 240 between each connection member 230 and the main shaft 210 may be 1, 2, 3, or 4 and more. When there are a plurality of the link members 240 between each of the link members 230 and the main shaft 210, the plurality of link members 240 are spaced apart in the axial direction of the main shaft 210. In an embodiment in which the connection member 230 includes a plurality of sub-connection members, each sub-connection member may be rotatably connected to the main shaft 210 by at least one linkage member 240, for example, one sub-connection member may be provided corresponding to one linkage member 240.

The following describes the link 240 provided in the embodiment of the present application.

As shown in fig. 16 and 17, the linkage 240 may include a first end 241 and a second end 245 along the first direction X, the first end 241 being an end of the linkage 240 near the main shaft 210, the first end 241 being rotatably connected to the main shaft 210. The second end 245 is an end of the linkage 240 near the link 230, and the second end 245 and the link 230 can be slidably connected.

As shown in fig. 7, the link members 240 at both sides of the main shaft 210 are a first link member 240a and a second link member 240b, respectively. The main shaft 210 is rotatably connected with the first connecting member 230a through a first linkage member 240a, the main shaft 210 is rotatably connected with the second connecting member 230b through a second linkage member 240b, and the first linkage member 240a and the second linkage member 240b can be rotatably connected with the main shaft 210 through the damping assembly 220. One damping assembly 220 corresponds to at least one first linkage member 240a and at least one second linkage member 240b. When the first middle frame 131 is rotated, the first middle frame 131 drives the first connecting piece 230a to rotate, and the first connecting piece 230a drives the first linkage piece 240a to rotate relative to the main shaft 210, so that the first middle frame 131 is rotatably matched with the main shaft 210. When the first middle frame 131 rotates to rotate the first linkage 240a relative to the main shaft 210, the first link 230a and the first linkage 240a slide relative to each other. When the second middle frame 132 is rotated, the second middle frame 132 drives the second connecting member 230b to rotate, and the second connecting member 230b drives the second linking member 240b to rotate relative to the main shaft 210, so as to realize the rotating matching between the second middle frame 132 and the main shaft 210. When the second middle frame 132 rotates to rotate the second link member 240b relative to the main shaft 210, the second link member 230b and the second link member 240b slide relative to each other.

The damping assembly 220 can provide damping to the linkage 240 to provide damping for the folding device 200, thereby achieving a hovering effect of the folding device 200 and improving a user's feel of use. If the linkage 240 is not damped during the movement (rotation and/or sliding), the linkage 240 may move under any external force, so that the folding device 200 may not be maintained at the desired use angle, i.e., cannot hover, resulting in poor user feel. For example, when a user applies an external force to fold the mobile phone, the flexible screen 110 on the mobile phone is deformed and bent by the external force and the folding device 200 is folded; when the user removes the external force, the bent portion of the flexible screen 110 has a deformation restoring force, and the flexible screen 110 recovers to the flat state and causes the folding device 200 to unfold under the action of the deformation restoring force, so that the user cannot hover. According to the embodiment of the application, the damping component 220 provides damping for the linkage member 240, when the external force is removed by a user, the damping can resist the deformation restoring force of the flexible screen 110, and the folding device 200 can be ensured to hover at any angle, so that the electronic device 100 can be ensured to hover at any angle, and the use hand feeling of the user can be improved.

In some embodiments, the first end 241 of the first linkage member 240a and the first end 241 of the second linkage member 240b may rotate synchronously therebetween for achieving synchronous rotation of the first linkage member 240a and the second linkage member 240b, and thus the first link 230a and the second link 230 b. The first middle frame 131 drives the first linkage part 240a to rotate through the first connecting part 230a, the first linkage part 240a drives the second linkage part 240b to rotate, and the second linkage part 240b can drive the second middle frame 132 to rotate through the second connecting part 230b, so that linkage between the first middle frame 131 and the second middle frame 132 is realized, and the first middle frame 131 and the second middle frame 132 can synchronously rotate. Like this, when expanding or folding electronic equipment 100, only need drive wherein one side center 130 and rotate and just can drive opposite side center 130 and rotate, when realizing folding or the expansion of electronic equipment 100, the operation is more convenient, helps promoting to use and experiences.

Referring to fig. 17 and 18, the first end 241 may include a first rotating portion 242 and a second rotating portion 243 which are interlocked with each other, and the second rotating portion 243 is located on a side of the first rotating portion 242 facing away from the second end 245. The first and second rotating portions 242 and 243 may each be rotatably coupled to the damping assembly 220. Wherein, the surface of the first rotating part 242 may be provided with a tooth structure 2423, the second rotating part 243 may be a gear, and the tooth structure 2423 is engaged with the gear. The tooth structure 2423 may be provided only on a portion of the outer surface of the first rotating part 242, or the tooth structure 2423 may be provided on the entire outer surface of the first rotating part 242. When one of the first rotating portion 242 and the second rotating portion 243 rotates, the other of the first rotating portion 242 and the second rotating portion 243 is rotated, so that the first rotating portion 242 and the second rotating portion 243 are rotated synchronously. The number of the second rotating portions 243 in the first end 241 may be at least one, and the number of the second rotating portions 243 may be 1, 2, 3, or 4 or more.

When the number of the second rotating portions 243 in the first end 241 is plural, the plural second rotating portions 243 are sequentially arranged along the first direction X, and adjacent two second rotating portions 243 are engaged with each other. The number of the second rotating parts 243 located between the first rotating parts 242 of the first and second link members 240a and 240b may be an even number. In the first direction X, the outermost second rotating portion 243 of the first link 240a is engaged with the first rotating portion 242 of the first link 240a, the outermost second rotating portion 243 of the second link 240b is engaged with the first rotating portion 242 of the second link 240b, and the innermost second rotating portion 243 of the first link 240a is engaged with the innermost second rotating portion 243 of the second link 240b, so that the first rotating portion 242 of the first link 240a and the first rotating portion 242 of the second link 240b rotate synchronously with the second rotating portions 243 therebetween.

In the embodiment of the present application, the number of the second rotating portions 243 in the first end 241 is 1. When the first link 240a rotates relative to the main shaft 210, the first rotating portion 242 of the first link 240a rotates, the first rotating portion 242 of the first link 240a drives the second rotating portion 243 of the first link 240a to rotate, the second rotating portion 243 of the first link 240a drives the second rotating portion 243 of the second link 240b to rotate, and the second rotating portion 243 of the second link 240b drives the first rotating portion 242 of the second link 240b to rotate, so as to drive the second link 240b to rotate relative to the main shaft 210.

The cooperation of the damping member 220 and the first end 241 of the linkage 240 provided in the embodiment of the present application will be described below.

As shown in fig. 16 and 19, the damping assembly 220 may include a first shaft 227, the first shaft 227 extending in the axial direction of the main shaft 210. The first rotating shaft 227 is inserted into the first rotating portion 242, and the first rotating portion 242 is rotatably connected to the damping member 220 by the first rotating shaft 227. The first rotating portion 242 is movable on the first rotating shaft 227 in the axial direction of the main shaft 210.

The damping assembly 220 may include a second rotation shaft 228, and the second rotation shaft 228 may extend in an axial direction of the main shaft 210. A second rotating shaft 228 is correspondingly inserted into a second rotating portion 243, and the second rotating portion 243 is rotatably connected to the damping member 220 through the second rotating shaft 228. The first and second shafts 227, 228 may be collectively referred to as a shaft.

The damping assembly 220 may include a first cam 221 and a second cam 222, and the first cam 221 and the second cam 222 may be movably disposed on the main shaft 210 along an axial direction of the main shaft 210. The first cam 221 and the second cam 222 may be respectively located at opposite sides of the first end 241 in the axial direction of the main shaft 210, and the first rotating portion 242 and the second rotating portion 243 are located between the first cam 221 and the second cam 222. With continued reference to fig. 20, the linkage 240 may include a first end surface 2461 and a second end surface 2462 spaced apart along the axial direction of the main shaft 210. The first end surface 2461 faces the first cam 221, and the second end surface 2462 faces the second cam 222.

Referring to fig. 16 and 21, the first cam 221 and the second cam 222 can be respectively engaged with the first end 241, and the number of the cams (the first cam 221 and the second cam 222) engaged with the first end 241 is large, so that the hovering effect of the folding device 200 and the electronic device 100 at any angle can be improved. The first cam 221 may be engaged with the first rotating portion 242 and the second rotating portion 243, and one ends of the first rotating portion 242 and the second rotating portion 243 close to the first cam 221 are engaged with different positions of the first cam 221. The second cam 222 may be engaged with the first rotating portion 242, one end of the first rotating portion 242 close to the second cam 222 may be engaged with the second cam 222, and the second cam 222 and the second rotating portion 243 may be spaced apart from each other. The first cam 221 may have a first fitting surface 2211 on a side facing the first end 241, and the first end 241 may have a first engagement surface 2471 on a side facing the first fitting surface 2211. The first end surface 2461 of the first rotating portion 242 and the first end surface 2461 (fig. 20) of the second rotating portion 243 may jointly form a first engagement surface 2471, the first engagement surface 2211 and the first engagement surface 2471 are oppositely arranged, and the first engagement surface 2211 and the first engagement surface 2471 are connected in a fitting manner. The second cam 222 may have a second fitting surface 2221 on a side facing the first end 241, and a second mating surface 2472 on a side facing the second fitting surface 2221 on the first end 241. The second end surface 2462 (fig. 20) of the first rotating portion 242 may form a second mating surface 2472, the second fitting surface 2221 and the second mating surface 2472 are disposed opposite to each other, and the second fitting surface 2221 and the second mating surface 2472 are fitted and connected.

Since the first cam 221 is simultaneously fitted and connected to the first rotating portion 242 and the second rotating portion 243, and the second cam 222 is fitted and connected to the first rotating portion 242, the second cam 222 is not fitted and connected to the second rotating portion 243. The area of the first engagement surface 2471 is larger than that of the second engagement surface 2472, and the area of the first fitting surface 2211 is larger than that of the second fitting surface 2221, that is, the fitting area between the first cam 221 and the first end 241 is larger than that between the second cam 222 and the first end 241. If the friction force between the first cam 221 and the first end 241 (i.e., the first friction force) is less than or equal to the friction force between the second cam 222 and the first end 241 (i.e., the second friction force), the friction force received by the first fitting surface 2211 per unit area is less than the friction force received by the second fitting surface 2221 per unit area during the folding process of the folding apparatus 200, so that the degree of wear of the first cam 221 is less than that of the second cam 222. When the second cam 222 wears to fail, the folding device 200 will not maintain effective hovering, while the first cam 221 has not worn to fail, thereby wasting the wear resistance of the first cam 221.

Therefore, the frictional force between the first cam 221 and the first end 241 may be made larger than the frictional force between the second cam 222 and the first end 241, that is, the frictional force between the first fitting surface 2211 and the first fitting surface 2471 may be made larger than the frictional force between the second fitting surface 2221 and the second fitting surface 2472. Accordingly, the friction force applied to the first fitting surface 2211 per unit area is increased, and the degree of wear of the first cam 221 is increased, so that the wear resistance of the first cam 221 can be sufficiently utilized, and the wear resistance of the first cam 221 can be prevented from being wasted. For example, the friction force received by the first fitting surface 2211 per unit area may be substantially the same as (the same as or slightly different from) the friction force received by the second fitting surface 2221 per unit area, so that the wear degrees of the first cam 221 and the second cam 222 are relatively uniform, and the failure times of the first cam 221 and the second cam 222 are close to each other, so that the wear resistance of both the first cam 221 and the second cam 222 can be fully utilized. In addition, as the friction force between the first cam 221 and the first end 241 is increased, the damping of the linkage 240 can be increased, so that the hovering effect of the folding device 200 at any angle can be improved, and the use hand feeling of a user can be improved.

Referring to fig. 16, the damping assembly 220 may include a first elastic member 223 and a second elastic member 224, and the first elastic member 223 and the second elastic member 224 may be in a compressed state. The first elastic member 223 may be located on a side of the first cam 221 facing away from the first end 241, and the second elastic member 224 may be located on a side of the second cam 222 facing away from the first end 241. The first elastic member 223 may be used to push the first cam 221 to move near the first end 241, so that the first cam 221 is engaged with the first end 241. The second elastic element 224 may be configured to push the second cam 222 to move close to the first end 241, so that the second cam 222 is engaged with the first end 241.

The first elastic member 223 may include a plurality of first sub-elastic members arranged along the first direction X, the second elastic member 224 may include a plurality of second sub-elastic members arranged along the first direction X, one rotation shaft (the first rotation shaft 227 and the second rotation shaft 228) corresponds to one first sub-elastic member and one second sub-elastic member at the same time, and the number of the first sub-elastic members and the number of the second sub-elastic members may be the same as the total number of the first rotation shaft 227 and the second rotation shaft 228. For example, the number of the first sub-elastic members and the second sub-elastic members may be 4 each.

As shown in fig. 21, the first fitting surface 2211, the second fitting surface 2221, the first mating surface 2471, and the second mating surface 2472 each have a convex structure and a concave structure. When the first fitting surface 2211 is fitted and connected to the first fitting surface 2471, the first fitting surface 2211 and the first fitting surface 2471 may abut, and the convex structure on the first fitting surface 2211 is located in the concave structure on the first fitting surface 2471, and the convex structure on the first fitting surface 2471 is located in the concave structure on the first fitting surface 2211. When the second fitting surface 2221 is fitted and connected to the second fitting surface 2472, the second fitting surface 2221 and the second fitting surface 2472 may abut against each other, the protruding structure on the second fitting surface 2221 is located in the recessed structure on the second fitting surface 2472, and the protruding structure on the second fitting surface 2472 is located in the recessed structure on the second fitting surface 2221. Taking the example of the second fitting surface 2221 and the second engagement surface 2472 being fitted and connected, if a user applies an external force to rotate the first rotating portion 242 relative to the second cam 222, the second fitting surface 2221 and the second engagement surface 2472 can rotate relative to each other. When the top surface of the convex structure of the second fitting surface 2221 and the top surface of the convex structure of the second fitting surface 2472 are in contact, the second elastic member 224 is further compressed; if the user removes the external force, the second fitting surface 2221 and the second fitting surface 2472 move towards each other under the elastic force of the second elastic member 224 to be in the fitting state again, the protruding structure of the second fitting surface 2221 is located in the recessed structure of the second fitting surface 2472, and the protruding structure of the second fitting surface 2472 is located in the recessed structure of the second fitting surface 2221, so that the folding device 200 can hover with a distinct pause feeling, and the second fitting surface 2221 and the second fitting surface 2472 are mutually limited, so that the folding device 200 can hover at any angle.

As shown in fig. 17, for example, the first rotating part 242 may include a first extending part 2421 and a second extending part 2422 that are spaced apart from each other in the axial direction of the main shaft 210, the first extending part 2421 is located on one side of the second extending part 2422 close to the first cam 221, the first extending part 2421 is engaged with the first cam 221, and the second extending part 2422 is engaged with the second cam 222. The first extension part 2421 and the second extension part 2422 have a second mounting position 2426 therebetween. The damping assembly 220 may include a mounting member 225, the mounting member 225 may be located between the first cam 221 and the second cam 222, and the first extension part 2421 and the second rotating part 243 may be located between the mounting member 225 and the first cam 221. Partial mount 225 may be located in second mounting location 2426 to increase the component compactness of damping assembly 220. Mounting member 225 may be coupled to spindle 210, for example, mounting member 225 may be used to limit the position of damping assembly 220 on spindle 210 to prevent misalignment of damping assembly 220 before outer shaft 212 is snapped to inner shaft 211.

Mounting member 225 may include a securing portion 2251 and a stop 2252 connected, and stop 2252 may be located in second mounting location 2426 between first extension part 2421 and second extension part 2422. The mounting member 225 may be connected to the spindle 210 by a fixing portion 2251. The stoppers 2252 may include two stoppers 2252, two stoppers 2252 are respectively disposed on two sides of the fixing part 2251 along the first direction X, one stopper 2252 is disposed in the second mounting position 2426 of the first linkage 240a, and the other stopper 2252 is disposed in the second mounting position 2426 of the second linkage 240b. The second rotating part 243 may be located between the fixing part 2251 and the first cam 221, and a gap may be provided between the fixing part 2251 and the second cam 222, so that the fixing part 2251 may be prevented from affecting the engagement between the second cam 222 and the second extension part 2422. For example, the fixing part 2251 and the limiting part 2252 may be connected by screwing, bonding, clipping, welding, or integrally molding. The fixing part 2251 may be connected to the main shaft 210 by means of bonding, clamping, screwing, welding, etc.

The foldable device 200 may include fittings on the first pivot 227 and the second pivot 228. Referring to fig. 13, the fitting may include a first fitting 271 and a second fitting 272 spaced apart along the axial direction of the main shaft 210. The first fitting 271 may be located on a side of the first elastic member 223 facing away from the first cam 221, and the second fitting 272 may be located on a side of the second elastic member 224 facing away from the second cam 222. The first fitting member 271 may be located at one end of the first rotating shaft 227 and the second rotating shaft 228, and the second fitting member 272 may be located at the other end of both the first rotating shaft 227 and the second rotating shaft 228. The first and second fitting members 271 and 272 serve as a stopper for the first elastic member 223, the first cam 221, the first end 241, the mounting member 225, the second cam 222, the second elastic member 224, and the like located therebetween.

One end of the first elastic member 223 may be coupled to the first fitting 271, and the other end of the first elastic member 223 may be coupled to the first cam 221. The first elastic member 223 and the first assembly member 271 may be connected by abutting, fixing, and the like. The fixed connection in the embodiments of the present application may include a detachable connection or a non-detachable connection. Taking the example of the connection between the first elastic member 223 and the first assembly 271, the first elastic member 223 and the first assembly 271 may be directly connected to each other or may be connected to each other at intervals by other structural members. The first elastic member 223 and the first cam 221 may be connected by abutting, fixing, and the like, for example, the first elastic member 223 and the first cam 221 may be directly connected or connected with each other at intervals by other structural members. One end of the second elastic member 224 may be connected to the second cam 222, and the other end of the second elastic member 224 may be connected to the second fitting member 272. The second elastic member 224, the second cam 222 and the second assembly member 272 may be connected by abutting, fixing, and the like, and the principle thereof is similar to that of the first elastic member 223, and will not be described again.

Referring to fig. 17 and 19, the first rotating shaft 227 is sequentially inserted through the first elastic member 223, the first cam 221, the first extension part 2421, the limiting part 2252, the second extension part 2422, the second cam 222 and the second elastic member 224 in the axial direction of the main shaft 210. The second rotating shaft 228 may include a first sub rotating shaft 2281 and a second sub rotating shaft 2282 spaced apart from each other in the axial direction of the main shaft 210, wherein one end of the first sub rotating shaft 2281 far from the second sub rotating shaft 2282 is connected to the first assembling member 271 (fig. 13), and one end of the second sub rotating shaft 2282 far from the first sub rotating shaft 2281 is connected to the second assembling member 272. Along the axial direction of the main shaft 210, the first sub-rotating shaft 2281 is sequentially arranged in the first elastic member 223, the first cam 221, the second rotating part 243 and at least part of the fixing part 2251 in a penetrating manner; the second sub-rotating shaft 2282 is sequentially inserted into the second cam 222 and the second elastic member 224. A gap may be formed between the fixing part 2251 and the second sub-shaft 2282 along the axial direction of the main shaft 210 to prevent the fixing part 2251 from affecting the engagement between the second cam 222 and the second extending part 2422.

The following describes an arrangement of at least a part of the rotating shaft provided in the embodiment of the present application along the axial direction of the main shaft 210.

At least a portion of the first rotating shaft 227 and the second rotating shaft 228 may be movably disposed on the main shaft 210 along the axial direction of the main shaft 210. Referring to fig. 17 and 19, the fitting may further include a third fitting 273, and the third fitting 273 is positioned between the first cam 221 and the first elastic member 223. In some examples, the third fitting 273 is coupled to the first shaft 227 such that the first shaft 227 and the third fitting 273 move synchronously in the axial direction of the main shaft 210. The third fitting 273 may not be connected to the first sub spool 2281, so that the assembly of the third fitting 273 to the spool may be simplified. The first sub-rotating shaft 2281 may be connected to the second rotating part 243 to prevent the first sub-rotating shaft 2281 from freely moving along the axial direction of the main shaft 210. For example, the third fitting part 273 may have a third fitting hole, and the first rotating shaft 227 is inserted into the third fitting hole. The edge of the third fitting 273 has a notch, which communicates with the third fitting hole. First pivot 227 enters into the third pilot hole through the breach, and the size of third pilot hole is less than the size of first pivot 227 to make third assembly part 273 joint on first pivot 227, its dismouting is comparatively convenient. In other examples, the third fitting part 273 may be connected to both the first rotating shaft 227 and the first sub-rotating shaft 2281, so that the third fitting part 273 and the first rotating shaft 227 and the first sub-rotating shaft 2281 move synchronously in the axial direction of the main shaft 210, and in addition, the number of rotating shafts connected to the third fitting part 273 is large, so that the stability of the assembly of the third fitting part 273 and the rotating shafts can be improved.

For example, referring to fig. 13 and 19, the first fitting 271 may be connected to the main shaft 210, for example, the first fitting 271 may be connected to the inner shaft 211, and the first fitting 271 and the inner shaft 211 may be connected by screwing, bonding, clipping, welding, or integrally forming. The first rotating shaft 227 and the end of the first sub-rotating shaft 2281 remote from the second fitting member 272 are inserted into the first fitting hole of the first fitting member 271. The first fitting hole may have a size larger than that of the first rotation shaft 227 and the first sub rotation shaft 2281 so that the first rotation shaft 227 and the first sub rotation shaft 2281 move in the first fitting hole in the axial direction of the main shaft 210. Second fitting member 272 may be coupled to first shaft 227 and second sub-shaft 2282 such that second fitting member 272 and first shaft 227 and second sub-shaft 2282 may move in synchronization with each other in the axial direction of main shaft 210. The second assembling member 272 may include a first assembling portion 2721 and a plurality of second assembling portions 2722, different portions of the first assembling portion 2721 are respectively sleeved on the first rotating shaft 227 and the second sub-rotating shaft 2282, the first assembling portion 2721 has a second assembling hole therein, and the size of the second assembling hole is larger than the size of the first rotating shaft 227 and the second sub-rotating shaft 2282, so that the second assembling portion 2722 is conveniently sleeved on the first rotating shaft 227 and the second sub-rotating shaft 2282 at the same time, which is beneficial to assembling the first assembling portion 2721. In addition, the first rotating shaft 227 and the second sub-rotating shaft 2282 are both provided with a second assembling portion 2722, and the second assembling portion 2722 can be connected with the first rotating shaft 227 and/or the second sub-rotating shaft 2282 in a bonding, clamping, threaded connection, welding, integrated forming and other manners. The second assembling portion 2722 on at least one of the first rotating shaft 227 and the second sub-rotating shaft 2282 abuts against a side of the first assembling portion 2721 away from the mounting member 225, so that the first assembling portion 2721 is prevented from being separated from the rotating shaft. For example, the second mounting portion 2722 of the first rotating shaft 227 is located on a side of the first mounting portion 2721 facing away from the mounting member 225, and the second mounting portion 2722 of the second rotating shaft 228 is located on a side of the first mounting portion 2721 facing toward the mounting member 225.

For example, the third assembly 273 is connected to the first shaft 227 and is not connected to the first sub-shaft 2281. On one hand, the first fitting 271 (fig. 13) is a stationary member in the axial direction of the main shaft 210, and as shown in fig. 17 and fig. 19, the first elastic member 223 pushes the third fitting 273 to move in the C direction (in the direction from the first cam 221 to the second cam 222), the third fitting 273 pushes the first cam 221 to move in the C direction, the first cam 221 pushes the first rotating part 242 and the second rotating part 243 to move in the C direction, so that the first extending part 2421 and the stopper 2252 of the first rotating part 242 abut against each other, or the second end surface 2462 (fig. 20) of the second end 245 abuts against the connecting member 230 (as will be described in the following embodiments), and the second rotating part 243 can also abut against the fixing part 2251, so as to improve the hovering effect of the folding device 200 and the electronic apparatus 100 at any angle. Since the mounting member 225 is a stationary member in the axial direction of the main shaft 210, the first and second rotating portions 242 and 243 are prevented from moving further in the direction C, and the elastic force of the first elastic member 223 acts only on the first cam 221 and does not act on the second cam 222. The third assembly part 273 drives the first rotating shaft 227 to move in the C direction when moving in the C direction, and the second rotating part 243 drives the first sub-rotating shaft 2281 to move in the C direction when moving in the C direction. When the first cam 221 moves in the C direction, the first cam 221 is fitted and connected to the first rotating portion 242 and the second rotating portion 243.

On the other hand, the second fitting member 272 is movable in the axial direction of the main shaft 210. One end of the second elastic element 224 pushes the second assembly element 272 to move in the C direction, the second assembly element 272 drives the first rotating shaft 227 and the second sub-rotating shaft 2282 to move in the C direction, the first rotating shaft 227 drives the third assembly element 273 to move in the C direction, the third assembly element 273 drives the first cam 221 to move in the C direction, the first cam 221 drives the first rotating part 242 and the second rotating part 243 to move in the C direction, so that the first extending part 2421 and the limiting part 2252 abut against each other, or the second 24end surface 62 (fig. 20) of the second end 245 abuts against the connecting element 230, and the second rotating part 243 abuts against the fixing part 2251, so as to improve the hovering effect of the folding device 200 and the electronic device 100 at any angle. The principle is similar to that of the first elastic member 223 and will not be described in detail. The second rotating portion 243 drives the first sub-shaft 2281 to move in the C direction. When the first cam 221 moves in the C direction, the first cam 221 is fitted and connected to the first rotating portion 242 and the second rotating portion 243. In addition, the other end of the second elastic member 224 pushes the second cam 222 to move back to the C direction, so that the second cam 222 is engaged with the second extending part 2422 of the first rotating part 242. Therefore, the elastic force of the second elastic member 224 acts on the first cam 221 and the second cam 222 at the same time.

In this arrangement, the elastic force applied to the first cam 221 is the sum of the elastic force of the first elastic member 223 and the elastic force of the second elastic member 224, and the elastic force applied to the second cam 222 is the elastic force of the second elastic member 224, so that the elastic force applied to the first cam 221 is greater than the elastic force applied to the second cam 222, and during the folding process of the folding apparatus 200, the frictional force applied to the first cam 221 is greater than the frictional force applied to the second cam 222, thereby increasing the frictional force applied to the first fitting surface 2211 (fig. 21) per unit area, increasing the wear degree of the first cam 221, and making full use of the wear resistance of the first cam 221, thereby avoiding waste of the wear resistance of the first cam 221. In addition, the friction force between the first cam 221 and the first end 241 is increased, so that the damping of the linkage 240 can be increased, the hovering effect of the folding device 200 at any angle can be improved, and the use hand feeling of a user can be improved.

In the embodiment in which the first extension part 2421 abuts against the stopper 2252, when the first rotating part 242 rotates relative to the main shaft 210, since the surface of the first extension part 2421 of the first rotating part 242 facing the second cam 222 abuts against the surface of the stopper 2252 facing the first cam 221, a friction force is generated between the first extension part 2421 and the stopper 2252, so as to generate a damping force for preventing the first extension part 2421 from rotating relative to the main shaft 210, and the damping force can improve the hovering effect of the folding device 200 and the electronic device 100 at any angle, thereby improving the use feeling of the user. At this time, the second end surface 2462 (fig. 20) of the second end 245 has a gap with the connecting element 230, so as to prevent the contact between the first extending portion 2421 and the limiting portion 2252 caused by the contact between the second end 245 and the connecting element 230.

In the embodiment where the second end surface 2462 of the second end 245 abuts against the connecting member 230, when the second end 245 slides relative to the connecting member 230, since the second end surface 2462 (fig. 20) of the second end 245 abuts against the connecting member 230, a friction force is generated between the second end 245 and the connecting member 230, so as to generate a damping that prevents the second end 245 from sliding relative to the connecting member 230, the damping can improve a hovering effect of the folding device 200 and the electronic apparatus 100 at any angle, and thus a use feel of a user can be improved. At this time, a gap may be formed between a surface of the first extension part 2421 facing the second cam 222 and the stopper 2252, so as to prevent the first extension part 2421 and the stopper 2252 from contacting each other to affect the abutment between the second end surface 2462 of the second end 245 and the connecting member 230.

For example, the elastic force received by the first cam 221 is a first elastic force, the elastic force received by the second cam 222 is a second elastic force, and a ratio of the first elastic force to the first fitting surface 2211 may be substantially equal to a ratio of the second elastic force to the second fitting surface 2221. During the folding process of the folding device 200, the friction force received by the first fitting surface 2211 per unit area may be made substantially equal (may be the same or allow a slight difference) to the friction force received by the second fitting surface 2221 per unit area. Therefore, the wear degree of the first cam 221 and the second cam 222 is relatively consistent, and the failure time of the first cam 221 and the second cam 222 is close, so that the wear resistance of the first cam 221 and the second cam 222 is fully utilized. The friction force received by the first mating surface 2471 is the same as the friction force received by the first fitting surface 2211, and the friction force received by the second mating surface 2472 is the same as the friction force received by the second fitting surface 2221.

The following describes an axial stationary arrangement of at least a part of the rotating shaft along the main shaft 210 provided in the embodiment of the present application.

At least portions of the first rotating shaft 227 and the second rotating shaft 228 may be connected to the main shaft 210 by at least one of a first fitting 271 (fig. 13) and a second fitting 272, so that at least portions of the first rotating shaft 227 and the second rotating shaft 228 may be statically disposed in an axial direction of the main shaft 210. Referring to fig. 17, in some examples, the first rotating shaft 227 and the first sub-rotating shaft 2281 may be connected to the main shaft 210 by a first fitting 271, such that the first rotating shaft 227 and the first sub-rotating shaft 2281 are statically disposed with respect to an axial direction of the main shaft 210. The second fitting member 272 is coupled to the first rotation shaft 227 and the second sub-rotation shaft 2282, and the second fitting member 272 may not be coupled to the main shaft 210, so as to simplify the assembly process. Since the first rotation shaft 227 is stationary in the axial direction of the main shaft 210, the second fitting 272 is stationary in the axial direction of the main shaft 210, and thus the second sub-rotation shaft 2282 is stationary in the axial direction of the main shaft 210. At this time, the first rotating shaft 227 and the second rotating shaft 228 are both disposed stationary in the axial direction of the main shaft 210. The first elastic element 223 pushes the first cam 221 to move towards the direction C, so that the first cam 221 is embedded in the first extending part 2421 and the second rotating part 243; the first cam 221 pushes the first rotating portion 242 and the second rotating portion 243 to move toward the C direction, so that the first extending portion 2421 abuts against the limiting portion 2252, or the second end surface 2462 (fig. 20) of the second end 245 abuts against the connecting member 230, and the second rotating portion 243 abuts against the fixing portion 2251, thereby improving the hovering effect of the folding device 200 and the electronic apparatus 100 at any angle. The principle of which has been elucidated and will not be described in detail. On the other hand, the second elastic element 224 pushes the second cam 222 to move back to the direction C, so that the second cam 222 is engaged with the second extending portion 2422.

In other examples, the first fitting 271 (fig. 13) is connected to the main shaft 210, and the first rotation shaft 227 and the first sub-rotation shaft 2281 are inserted into the first fitting hole. The first rotation shaft 227 and the second sub rotation shaft 2282 are connected to the main shaft 210 by a second fitting 272 such that the first rotation shaft 227 and the second sub rotation shaft 2282 are statically disposed in the axial direction of the main shaft 210. For example, the first fitting hole may have a size larger than the first rotation shaft 227 and the first sub rotation shaft 2281, and the first sub rotation shaft 2281 may be connected to the second rotation part 243. On one hand, the first elastic element 223 pushes the first cam 221 to move in the C direction, the first cam 221 pushes the first rotating part 242 and the second rotating part 243 to move in the C direction, so that the first extending part 2421 and the limiting part 2252 abut against each other, or the second end surface 2462 (fig. 20) of the second end 245 abuts against the connecting element 230, and the second rotating part 243 can also abut against the fixing part 2251, so as to improve the hovering effect of the folding device 200 and the electronic device 100 at any angle. The principle of which has been elucidated and will not be described in detail. The second rotating portion 243 drives the first sub-shaft 2281 to move in the C direction when moving in the C direction. On the other hand, the second elastic element 224 pushes the second cam 222 to move back to the direction C, so that the second cam 222 is engaged with the second extending portion 2422.

In other examples, both ends of the first rotating shaft 227 and the second rotating shaft 228 are connected to the main shaft 210 through a first fitting 271 and a second fitting 272, respectively, so that both the first rotating shaft 227 and the second rotating shaft 228 are arranged in a stationary manner along the axial direction of the main shaft 210, and in addition, the assembling stability between the damper assembly 220 and the main shaft 210 can be improved. On one hand, the first elastic element 223 pushes the first cam 221 to move towards the C direction, the first cam 221 pushes the first rotating part 242 and the second rotating part 243 to move towards the C direction, so that the first extending part 2421 abuts against the limiting part 2252, or the second end surface 2462 (fig. 20) of the second end 245 abuts against the connecting element 230, and the second rotating part 243 abuts against the fixing part 2251, so as to improve the hovering effect of the folding device 200 and the electronic device 100 at any angle. The principle of which has been elucidated and will not be described in detail. On the other hand, the second elastic element 224 pushes the second cam 222 to move back to the direction C, so that the second cam 222 is engaged with the second extending portion 2422.

In the above-described examples in which at least part of the rotation shaft is stationary in the axial direction of the main shaft 210, the elastic force (first elastic force) received by the first cam 221 is the elastic force of the first elastic member 223, and the elastic force (second elastic force) received by the second cam 222 is the elastic force of the second elastic member 224. The elastic force of the first elastic member 223 may be greater than the elastic force of the second elastic member 224, so that the elastic force received by the first cam 221 is greater than the elastic force received by the second cam 222, and in the folding process of the folding apparatus 200, the friction force received by the first cam 221 may be greater than the friction force received by the second cam 222, so that the friction force received by the first fitting surface 2211 (fig. 21) per unit area is increased, the wear degree of the first cam 221 is increased, so that the wear resistance of the first cam 221 may be more fully utilized, and the waste of the wear resistance of the first cam 221 is avoided. In addition, because the friction force between the first cam 221 and the first end 241 is increased, the damping received by the link 240 can be increased, so that the hovering effect of the folding device 200 at any angle can be improved, and the use feel of the user can be improved.

When the external force is removed, the first elastic member 223 of the damping member 220 pushes the first cam 221 to engage with the first end 241 and the second elastic member 224 pushes the second cam 222 to engage with the first end 241, so that the first end 241 has a tendency to rotate continuously to cause the folding device 200 to be folded over (e.g., the angle between the connecting member 230 and the main shaft 210 is greater than 180 °). In order to make the folding device 200 be able to be in the flat state, and thus make the electronic apparatus 100 be in the flat state, the flat effect is better. If the electronic device 100 is in a flat state, 180 ° is formed between two adjacent first middle frames 131, the folding device 200, and the second middle frame 132. The mounting member 225 may cooperate with the linkage member 240 to limit the rotation of the linkage member 240 relative to the main shaft 210, so as to reduce or avoid the over-folding phenomenon caused by the damping assembly 220, and improve the flattening effect of the electronic device 100.

The following describes the embodiment of the present application in which the mounting member 225 limits the rotation of the link 240 relative to the main shaft 210.

As shown in fig. 20 and 22, the stopping part 2252 may have a first stopping structure 2253 thereon, and the first rotating part 242 may have a second stopping structure 2424 thereon. When the folding device 200 is in the unfolded state, the first stopper 2253 and the second stopper 2424 may abut against each other to form a state in which the stopper 2252 stops the first rotating part 242, and at this time, the first rotating part 242 cannot be unfolded any more, so as to avoid the folding device 200 from being folded too far.

For example, referring to fig. 23 and 24, the first stopping structure 2253 may include a first stopping surface 2254, and the second stopping structure 2424 may include a second stopping surface 2425, when the linkage 240 rotates relative to the main shaft 210, the first rotating part 242 rotates relative to the stopping part 2252, and when the linkage 240 rotates until the folding device 200 is in the unfolded state, the first stopping surface 2254 of the first stopping structure 2253 is in abutting engagement with the second stopping surface 2425 of the second stopping structure 2424, so as to limit the rotation of the linkage 240, so that the folding device 200 is maintained in the unfolded state, and thus the folding device 200 is prevented from being overfolded. For example, a second stopper surface 2425 is formed on at least one of the first extension part 2421 and the second extension part 2422, so that at least one of the first extension part 2421 and the second extension part 2422 abuts against the stopper part 2252 when the first rotating part 242 rotates.

The shapes of the first limiting surface 2254 and the second limiting surface 2425 may be adapted to improve the abutting fastness of the first limiting surface 2254 and the second limiting surface 2425, so as to facilitate the long-term maintaining of the flat state of the folding device 200.

For example, first spacing face 2254 and second spacing face 2425 can be the plane, is favorable to simplifying the structure, reduces the design degree of difficulty, in addition, also can guarantee first spacing face 2254 and second spacing face 2425 stable contact butt, promotes the butt fastness of first spacing face 2254 and second spacing face 2425. When the folding device 200 is in the unfolded state, the first stopper surface 2254 may abut against a side of the second stopper surface 2425 facing the outer shaft 212, and the first stopper surface 2254 may prevent the second stopper surface 2425 from rotating toward the unfolding direction, so as to prevent the first rotating portion 242 from rotating toward the unfolding direction, thereby preventing the folding device 200 from being folded too much. The first stopper surface 2254 may be parallel to the first direction X, and the second stopper surface 2425 may be parallel to the first direction X when the folding device 200 is in the unfolded state. Alternatively, the first stopper surface 2254 may intersect the first direction X.

The sliding connection between the second end 245 and the connecting member 230 provided in the embodiment of the present application is explained below.

In some embodiments, one of the link 230 and the second end 245 can be provided with a mating slot 231 (fig. 25), the other of the link 230 and the second end 245 can be provided with a slider 2451, the slider 2451 is inserted into the mating slot 231, and the link 230 and the second end 245 are slidably connected by the slider 2451 and the mating slot 231. For example, referring to FIG. 25, the link 230 may have a mating slot 231 and the second end 245 may have a slide 2451. Alternatively, the link 230 may be provided with the slider 2451 and the second end 245 may be provided with the mating slot 231.

The present application takes the example of the connecting member 230 having the positioning slot 231 and the second end 245 having the sliding member 2451.

As shown in fig. 25, the connecting member 230 has a positioning groove 231. The coordination slot 231 extends from an end of the connection member 230 facing the main shaft 210 to an end of the connection member 230 facing away from the main shaft 210, when the connection member 230 rotates relative to the main shaft 210, the linkage member 240 rotates relative to the main shaft 210, and the sliding member 2451 of the linkage member 240 slides along an extending direction of the coordination slot 231. Wherein slide 2451 can be formed from a portion of second end 245, or slide 2451 can be formed from all of second end 245.

The inner groove walls of the positioning groove 231 may include two first groove side walls 2311 axially spaced apart along the main shaft 210, and a first groove bottom wall 2312 located between the two first groove side walls 2311. The two first slot side walls 2311 are disposed opposite first and second end faces 2461 and 2462 (fig. 20) of the slider 2451, respectively. In embodiments where the second end 2462 of the second end 245 abuts the link 230, the second end 2462 of the slide 2451 can abut the first slot sidewall 2311 disposed opposite thereto.

Illustratively, as shown in fig. 26, two first groove side walls 2311 of the coordination groove 231 are provided with sliding grooves 232 along the axial direction of the main shaft 210, the sliding piece 2451 is provided with sliding arms 2452 along both sides of the axial direction of the main shaft 210, one sliding arm 2452 can be correspondingly inserted into one sliding groove 232, and the sliding arm 2452 and the sliding groove 232 can be connected in a sliding manner. The inner wall of the sliding groove 232 may include a groove top wall 2321 and a second groove bottom wall 2323 that are spaced apart in the thickness direction of the connection member 230, and a second groove side wall 2322 that is located between the groove top wall 2321 and the second groove bottom wall 2323. In embodiments where the second end face 2462 of the second end 245 abuts the link 230, the second end face 2462 of the sliding arm 2452 can abut the second slot side wall 2322.

The swinging member 250 provided in the embodiment of the present application will be explained below.

As shown in fig. 8, the folding device 200 may include an oscillating member 250, and the main shaft 210 and the connection member 230 may be rotatably connected by the oscillating member 250. For example, at least one oscillating member 250 is disposed between each connecting member 230 and the main shaft 210, and the number of the oscillating members 250 between each connecting member 230 and the main shaft 210 may be 1, 2, 3, or 4 or more. When there are a plurality of the oscillating members 250 between each of the connecting members 230 and the main shaft 210, the plurality of oscillating members 250 are arranged at intervals in the axial direction of the main shaft 210. In an embodiment in which the connection member 230 includes a plurality of sub-connection members, each sub-connection member may be rotatably connected to the main shaft 210 by at least one swinging member 250, for example, one sub-connection member may be provided corresponding to one swinging member 250.

The two swinging members 250 respectively located at both sides of the main shaft 210 are rotatably connected by the main shaft 210, and the two swinging members 250 are a first swinging member 250a and a second swinging member 250b, respectively. The main shaft 210 is rotatably connected to the first connecting member 230a via a first swinging member 250a, the main shaft 210 is rotatably connected to the second connecting member 230b via a second swinging member 250b, and the first swinging member 250a and the second swinging member 250b are rotatably connected via the main shaft 210. When the first middle frame 131 is rotated, the first middle frame 131 drives the first connecting member 230a to rotate, and the first connecting member 230a drives the first swinging member 250a to rotate relative to the main shaft 210; when the second middle frame 132 is rotated, the second middle frame 132 drives the second connecting member 230b to rotate, and the second connecting member 230b drives the second swinging member 250b to rotate relative to the main shaft 210.

Referring to fig. 27 and 28, in the first direction X, the swinging member 250 may include a third end 253 and a fourth end 254 connected to each other, the third end 253 of the swinging member 250 is an end of the swinging member 250 close to the main shaft 210, and the third end 253 may be rotatably connected to the main shaft 210. The fourth end 254 of the swinging member 250 is the end of the swinging member 250 close to the connecting member 230, and the fourth end 254 may be rotatably connected with the connecting member 230, or the fourth end 254 may be fixedly connected with the connecting member 230.

Illustratively, the rotational engagement between the third end 253 of the oscillating member 250 and the main shaft 210 may be achieved by way of a rail engagement. For example, the inner shaft 211 and the outer shaft 212 can define an arcuate guide 214 therebetween, the third end 253 can have an arcuate portion 2531 that mates with the arcuate guide 214, and the arcuate portion 2531 can be disposed within the arcuate guide 214 and slide along the arcuate guide 214 to provide the rotational engagement between the oscillating member 250 and the main shaft 210.

Illustratively, the fourth end 254 may also be rotatably coupled to the connecting member 230 via a track or pivot coupling. For example, in the case of a rotating shaft fit, a third rotating shaft 2543 may be disposed on the connecting member 230, the third rotating shaft 2543 is inserted into the fourth end 254, and the fourth end 254 may be rotatably fitted with the connecting member 230 via the third rotating shaft 2543.

In the embodiment where the outer shaft 212 includes a plurality of sub-outer shafts and the connecting member 230 includes a plurality of sub-connecting members, one damping assembly 220 can correspond to one sub-outer shaft and one sub-connecting member, one sub-outer shaft and the inner shaft 211 have a first mounting location 213 therebetween for receiving one damping assembly 220, and one sub-outer shaft and the inner shaft 211 have an arc-shaped guide rail 214 therebetween for cooperating with the oscillating member 250. One sub-outer shaft may correspond to the at least one linkage member 240 and the at least one oscillating member 250. For example, referring to fig. 5, the number of the damping assemblies 220, the sub-connecting members, and the sub-outer shafts is three, and one sub-outer shaft corresponds to one link member 240 and one oscillating member 250.

In the description of the embodiments of the present application, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may include, for example, a fixed connection, an indirect connection through an intermediate medium, a connection between two elements, or an interaction between two elements. The specific meanings of the above terms in the embodiments of the present application can be understood by those of ordinary skill in the art according to specific situations.

The terms "first," "second," "third," "fourth," and the like (if any) are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the embodiments of the present application, and are not limited thereto; although embodiments of the present application have been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.

Claims (16)

1. A folding device, comprising a main shaft (210), a connecting piece (230) and a linkage piece (240), wherein the main shaft (210) and the connecting piece (230) are arranged along an axial direction perpendicular to the main shaft (210), the main shaft (210) and the connecting piece (230) are rotatably connected through at least part of the linkage piece (240),

the linkage piece (240) comprises a first end (241), the first end (241) is rotatably connected with the main shaft (210), a first cam (221) and a second cam (222) are movably arranged on the main shaft (210), and the first cam (221) and the second cam (222) are respectively positioned at two opposite sides of the first end (241) along the axial direction of the main shaft (210);

the first cam (221) and the second cam (222) are in embedded connection with the first end (241), the embedded area of the first cam (221) and the first end (241) is larger than that of the second cam (222) and the first end (241), and a first friction force between the first cam (221) and the first end (241) is larger than a second friction force between the second cam (222) and the first end (241).

2. The folding apparatus according to claim 1, wherein the first cam (221) and the second cam (222) are movably provided on the main shaft (210) in an axial direction of the main shaft (210), the first cam (221) has a first fitting surface (2211) on a side facing the first end (241), the first end (241) has a first mating surface (2471) on a side facing the first fitting surface (2211), and the first fitting surface (2211) is fitted to the first mating surface (2471);

the second cam (222) has a second fitting surface (2221) on the side facing the first end (241), the first end (241) has a second fitting surface (2472) on the side facing the second fitting surface (2221), and the second fitting surface (2221) and the second fitting surface (2472) are fitted to each other;

the area of the first fitting surface (2211) is larger than the area of the second fitting surface (2221), and the first frictional force between the first fitting surface (2211) and the first mating surface (2471) is larger than the second frictional force between the second fitting surface (2221) and the second mating surface (2472).

3. The folding device of claim 2, characterized in that the ratio of the first friction force to the area of the first fitting surface (2211) is equal to the ratio of the second friction force to the area of the second fitting surface (2221).

4. The folding device according to claim 2 or 3, characterized in that a first elastic member (223), a second elastic member (224) and a rotating shaft are arranged on the main shaft (210), the first elastic member (223) is positioned on the side of the first cam (221) facing away from the first end (241), the second elastic member (224) is positioned on the side of the second cam (222) facing away from the first end (241);

the rotating shaft extends along the axial direction of the main shaft (210), the first end (241) is rotatably connected with the main shaft (210) through the rotating shaft, and the rotating shaft is arranged in the first elastic piece (223), the first cam (221), the first end (241), the second cam (222) and the second elastic piece (224) in a penetrating mode.

5. The folding device according to claim 4, characterized in that it further comprises a first fitting (271) and a second fitting (272), said first fitting (271) being located on the side of said first elastic member (223) facing away from said first cam (221), said second fitting (272) being located on the side of said second elastic member (224) facing away from said second cam (222);

one end of the first elastic member (223) is connected to the first fitting member (271), the other end of the first elastic member (223) is connected to the first cam (221), one end of the second elastic member (224) is connected to the second fitting member (272), and the other end of the second elastic member (224) is connected to the second cam (222).

6. The folding apparatus according to claim 5, characterized in that at least a part of the rotation shaft is movably disposed on the main shaft (210) along the axial direction of the main shaft (210).

7. The folding apparatus according to claim 6, characterized in that a third fitting member (273) is provided on the rotating shaft, the third fitting member (273) being located between the first elastic member (223) and the first cam (221), the first elastic member (223) being connected to the first cam (221) through the third fitting member (273);

one end of the rotating shaft is movably inserted into the first assembly part (271) along the axial direction of the main shaft (210), and the other end of the rotating shaft is connected with the second assembly part (272).

8. The folding apparatus according to claim 5, wherein at least a portion of the rotation shaft is stationarily disposed on the main shaft (210) along an axial direction of the main shaft (210), the rotation shaft is connected to the main shaft (210) by at least one of the first fitting member (271) and the second fitting member (272), and an elastic force of the first elastic member (223) is greater than an elastic force of the second elastic member (224).

9. The folding device according to claim 2 or 3, wherein the first end (241) comprises a first rotating part (242) and a second rotating part (243) which are interlocked with each other, one ends of the first rotating part (242) and the second rotating part (243) close to the first cam (221) are respectively embedded with different positions of the first cam (221), one ends of the first rotating part (242) close to the second cam (222) are embedded with the second cam (222), and the second rotating part (243) is arranged at intervals with the second cam (222).

10. The folding device according to claim 9, characterized in that the first rotating part (242) is provided with a tooth structure (2423), the second rotating part (243) comprising a gear wheel, the tooth structure (2423) being in engagement with the gear wheel.

11. The folding apparatus according to claim 9, wherein a mounting member (225) is provided on the main shaft (210), the mounting member (225) is located between the first cam (221) and the second cam (222), the first rotating portion (242) includes a first extension portion (2421) and a second extension portion (2422) which are spaced apart in an axial direction of the main shaft (210), the first extension portion (2421) is located on a side of the second extension portion (2422) close to the first cam (221), and a part of the mounting member (225) is located between the first extension portion (2421) and the second extension portion (2422).

12. The folding device of claim 11, wherein the mounting member (225) comprises a fixed portion (2251) and a stop portion (2252) in communication, the stop portion (2252) being located between the first and second extension portions (2421, 2422), the mounting member (225) being connected to the spindle (210) by the fixed portion (2251), the second rotating portion (243) being located between the fixed portion (2251) and the first cam (221), the fixed portion (2251) having a gap with the second cam (222).

13. The folding device of claim 12, wherein the stopping portion (2252) has a first stopping structure (2253) thereon, and the first rotating portion (242) has a second stopping structure (2424) thereon, wherein when the folding device is in the unfolded state, the first stopping structure (2253) and the second stopping structure (2424) abut to form a stopping state of the stopping portion (2252) on the first rotating portion (242).

14. The folding device according to claim 12, characterized in that the first rotating portion (242) is movably provided on the main shaft (210) in an axial direction of the main shaft (210), and a surface of the first extending portion (2421) on a side toward the second cam (222) abuts against the stopper portion (2252).

15. The folding device according to claim 12, characterized in that said first rotating portion (242) is movably arranged on said spindle (210) along an axial direction of said spindle (210), said linkage member (240) comprises a second end (245) connected to said first rotating portion (242), said second end (245) is slidably connected to said connecting member (230);

a face of the first extension part (2421) on the side facing the second cam (222) has a gap with the stopper part (2252), the link (240) includes a first end face (2461) and a second end face (2462) that are provided at a spacing in the axial direction of the main shaft (210), the first end faces (2461) of the first rotation part (242) and the second rotation part (243) form the first mating face (2471), the second end face (2462) of the first rotation part (242) forms the second mating face (2472), and the second end face (2462) of the second end (245) abuts against the connecting member (230).

16. An electronic device, comprising a flexible screen (110), at least two middle frames (130) and the folding device of any one of claims 1 to 15, wherein two adjacent middle frames (130) are respectively located at two sides of the folding device and are rotatably connected by the folding device, and the flexible screen (110) is laid on the folding device and the middle frames (130).

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