CN116517950A - A rotating shaft mechanism, a supporting device and a folding screen device - Google Patents

Abstract

The application provides a pivot mechanism, strutting arrangement and folding screen equipment relates to folding screen equipment technical field for how to improve the strutting arrangement of folding screen equipment and to the problem of folding screen's support performance. Specifically, the rotating shaft mechanism comprises a base, a first swing arm, a first supporting piece and an elastic supporting piece. The first swing arm is rotatably connected to the base, and the first swing arm can rotate relative to the base to enable the rotating shaft mechanism to move between an unfolding state and a folding state. The first supporting piece is positioned at the front side of the first swing arm; one end of the first supporting piece far away from the base is rotatably connected to the first swing arm. The elastic support comprises a first support part, the first support part is arranged on the front side of the first support and the base in a stacked mode, and the first support part is fixed on the first support. The pivot mechanism that this application provided is used for realizing folding of folding screen.

Description

A rotating shaft mechanism, a supporting device and a folding screen device

technical field

The present application relates to the technical field of folding screen equipment, and in particular to a rotating shaft mechanism, a supporting device and folding screen equipment.

Background technique

With the advancement of technology, large-screen devices are becoming more and more popular among consumers. In order to solve the problem of large size and inconvenient portability of traditional tablet devices, folding screen devices came into being. The folding screen device includes a supporting device for supporting the folding screen, and the supporting device includes housings on both sides and a rotating shaft mechanism connected between the housings on both sides. Wherein, the rotating shaft mechanism is used to support the bendable part of the folding screen. During the bending process of the folding screen device, the rotation radius of the folding screen is smaller than that of the rotating shaft mechanism. Therefore, the rotating shaft mechanism needs to be able to be extended, that is, the base of the rotating shaft mechanism needs to move away from the folding screen relative to the two sides of the housing. Move to avoid the bendable part of the Fold.

In the related art, in order to make the hinge mechanism extendable and shortenable, to accommodate and avoid the bendable part of the foldable screen when the foldable screen device is in the folded state, and to support the foldable screen when the foldable screen device is in the unfolded state, the hinge mechanism has The elastic support used to support the folding screen has a fixed end that is relatively fixed to the folding screen and a free floating end. During the unfolding and folding movement of the folding screen device, the free floating end of the elastic support will scratch other components and cause other components to be damaged. Damage and abnormal noise will reduce the reliability of the shaft mechanism and affect the user experience.

Contents of the invention

Embodiments of the present application provide a rotating shaft mechanism, a supporting device, and a folding screen device, which are used to solve the problem of how to improve the reliability of the rotating shaft mechanism.

In order to achieve the above object, the embodiments of the present application adopt the following technical solutions:

In a first aspect, an embodiment of the present application provides a rotating shaft mechanism, and the rotating shaft mechanism includes a base, a first swing arm, a first support member, and an elastic support member. The first swing arm is rotatably connected to the base, and the first swing arm can rotate relative to the base so that the hinge mechanism can move between an unfolded state and a folded state. The first support is located at the front side of the first swing arm; the end of the first support away from the base is rotatably connected to the first swing arm. The elastic supporting part includes a first supporting part, the first supporting part is stacked on the front side of the first supporting part and the base, and the first supporting part is fixed on the first supporting part.

In the shaft mechanism provided by the embodiment of the present application, since the end of the first support member away from the base is rotatably connected to the first swing arm, and the first swing arm is rotatably connected to the base, so that the first swing arm is relatively When the seat is rotated to move the shaft mechanism from the unfolded state to the folded state, the distance between the end of the first support member away from the base and the rotation axis of the first swing arm and the base remains unchanged. When the folding screen is bent and When the rotating shaft mechanism is extended, the first support can slide towards the base relative to the folding screen. Therefore, the two ends of the elastic support can be respectively fixed on the first support and other parts, preventing the elastic support from The free end rubs against the folding screen or other parts of the hinge mechanism, and produces abnormal noise, which improves the reliability of the hinge mechanism and the user experience.

In some possible implementation manners of the first aspect, the rotation axis of the first swing arm and the base is the first axis. The rotating shaft mechanism also includes a second swing arm, the second swing arm is rotatably connected to the base, the rotation axis of the second swing arm and the base is the second axis, and the second axis is parallel to the first axis; the second swing arm and the base The first supporting member is slidably connected along a direction perpendicular to the first axis. In this way, the second swing arm can control the inclination angle of the first support member relative to the front side surface of the base, so as to avoid the bending part of the folding screen when the hinge mechanism is in the folded state, and to avoid the bending part of the folding screen when the hinge mechanism is in the unfolded state. The bendable part that supports the folding screen.

In some possible implementations of the first aspect, when the first swing arm rotates relative to the base to move the hinge mechanism from the unfolded state to the folded state, the second swing arm drives the end of the first support member close to the base Relative to the end of the first supporting member away from the base, it is inclined to the back side of the first swing arm, and the elastic supporting member is bent. In this way, the first support and the base can form a partially drop-shaped containment space, so that the elastic support can be bent to form a drop-shaped containment space, and the bendable part of the folding screen can be It is folded into a drop shape to reduce the inner corner of the bendable part, reduce the probability of creases on the folding screen, ensure the display effect of the folding screen, and prolong the service life of the folding screen.

In some possible implementation manners of the first aspect, the rotating shaft mechanism further includes a first connecting member. The first link is rotatably connected to one of the second swing arm and the first swing arm, and is slidably connected to the other of the second swing arm and the first swing arm. When the first swing arm rotates relative to the base to move the hinge mechanism from the unfolded state to the folded state, the end of the first connecting member away from the base moves away from the base along a direction perpendicular to the first axis. When the first swing arm rotates relative to the base to move the hinge mechanism from the folded state to the unfolded state, the end of the first connecting member away from the base moves toward the base in a direction perpendicular to the first axis. In this way, when the rotating shaft mechanism moves from the unfolded state to the folded state, the length of the rotating shaft mechanism increases, and when the rotating shaft mechanism moves from the folded state to the unfolded state, the length of the rotating shaft mechanism decreases. It will cause stretching, compression and other forces on the folding screen, thereby prolonging the service life of the folding screen.

In some possible implementations of the first aspect, the rotating shaft mechanism further includes a first rotating shaft, the first rotating shaft is arranged on one of the second swing arm and the first connecting member, and the second swing arm and the first connecting member The other of the two parts has a first mounting hole, and the first rotating shaft passes through the first mounting hole to realize the rotatable connection between the first connecting part and the second swing arm. In this way, the first connecting member and the second swing arm are rotationally connected through the rotating shaft, and the connection is reliable and the assembly is convenient.

In some possible implementation manners of the first aspect, the first support member has a first sliding slot. A part of the first rotating shaft is slidably disposed in the first slide slot. In this way, the first rotating shaft can be used not only to realize the rotatable connection between the first connecting part and the second swing arm, but also to realize the slidable connection between the first support part and the second swing arm, which simplifies the connection structure, The structure of the rotating shaft mechanism is made more compact, and the assembly of the rotating shaft mechanism is facilitated.

In some possible implementation manners of the first aspect, the rotating shaft mechanism further includes a third swing arm and a second support member. The third swing arm and the first swing arm are respectively arranged on opposite sides of the base, and the third swing arm is rotatably connected to the base; the third swing arm can rotate relative to the base so that the shaft mechanism is in the unfolded state and folded movement between states. The second support is located on the front side of the third swing arm, and the end of the second support away from the base is rotatably connected to the third swing arm; the elastic support also includes a second support part, and the second support part is stacked on the The front side of the second support is fixed on the second support.

In this way, since the end of the second support member away from the base is rotatably connected to the third swing arm, the third swing arm is rotatably connected to the base, so that the third swing arm rotates relative to the base so that the shaft When the mechanism moves from the unfolded state to the folded state, the distance between the end of the second support member away from the base and the rotation axis of the third swing arm and the base remains unchanged. When the folding screen is bent and the shaft mechanism is extended , the second supporting member can slide towards the base relative to the folding screen. Therefore, the two ends of the elastic support can be respectively fixed on the first support and the second support, thereby providing a continuous and complete support surface for the folding screen, improving the support performance of the supporting device for the folding screen, and further improving the resistance of the folding screen. impact performance.

In some possible implementation manners of the first aspect, the rotating shaft mechanism further includes a third swing arm, a second connecting member, and a second supporting member. The third swing arm and the first swing arm are respectively arranged on opposite sides of the base, and the third swing arm is rotatably connected to the base; the third swing arm can rotate relative to the base so that the shaft mechanism is in the unfolded state and folded movement between states. The second link is rotatably connected to the third swing arm. The second support member is located on the front side of the third swing arm, and the end of the second support member away from the base is rotatably connected to the second connecting member; the elastic support member also includes a second support part, and the second support part is stacked on the The front side of the second support is fixed on the second support.

In this way, since the end of the second supporting member away from the base is rotatably connected to the second connecting member, the second connecting member is rotatably connected to the third swing arm, and the third swing arm is rotatably connected to the base , when the third swing arm is rotated relative to the base to move the shaft mechanism from the unfolded state to the folded state, when the second connecting member is relatively fixed to the folding screen, the second supporting member is also relatively fixed to the folding screen, thereby making the elastic An end of the support member away from the first support member is relatively fixed to the folding screen. Therefore, the elastic support member can provide a continuous and complete supporting surface for the folding screen, and can also provide a support area as large as possible for the folding screen, improve the supporting performance of the supporting device for the folding screen, and further improve the impact resistance of the folding screen.

In some possible implementation manners of the first aspect, the rotation axis between the third swing arm and the base is the third axis. The rotating shaft mechanism also includes a fourth swing arm, which is rotatably connected to the base; the rotation axis between the fourth swing arm and the base is the fourth axis, and the fourth axis is parallel to the third axis; the fourth swing arm or The third swing arm is slidably connected to the second support member along a direction perpendicular to the fourth axis. In this way, the fourth swing arm or the third swing arm can control the inclination angle of the second support member relative to the front side surface of the base, so as to avoid the bending part of the folding screen when the hinge mechanism is in the folded state, and to avoid the bending part of the hinge when the hinge mechanism is in the folded state. The mechanism supports the bendable portion of the folding screen when the mechanism is in an unfolded state.

In some possible implementations of the first aspect, when the third swing arm rotates relative to the base to move the hinge mechanism from the unfolded state to the folded state, the fourth swing arm or the third swing arm drives the The end close to the base is inclined towards the back side of the third swing arm relative to the end of the second support member away from the base. In this way, the first support member, the second support member and the base can form a drop-shaped containment space, so that the elastic support can be bent to form a drop-shaped containment space. The bendable part is folded into a drop shape to reduce the inner corner of the bendable part, reduce the probability of creases on the folding screen, ensure the display effect of the folding screen, and prolong the service life of the folding screen.

In some possible implementations of the first aspect, when the first swing arm and the third swing arm are rotated relative to the base so that the hinge mechanism is in the expanded state, the first support member and the second support member are located in the same plane, and the elastic The support is flattened to form a support surface. In this way, the first supporting member and the second supporting member can form a reliable support for the elastic supporting member, which is conducive to improving the flatness of the elastic supporting member, and then can make the elastic supporting member form a reliable support for the bendable part of the folding screen. support, thereby improving the flatness of the folding screen.

In some possible implementation manners of the first aspect, the fourth swing arm is also slidably connected to the second connecting member. When the third swing arm rotates relative to the base to move the hinge mechanism from the unfolded state to the folded state, the end of the second connecting member away from the base moves away from the base along a direction perpendicular to the third axis. When the third swing arm rotates relative to the base to move the hinge mechanism from the folded state to the unfolded state, the end of the second connecting member away from the base moves toward the base along a direction perpendicular to the third axis. In this way, when the rotating shaft mechanism moves from the unfolded state to the folded state, the length of the rotating shaft mechanism increases, and when the rotating shaft mechanism moves from the folded state to the unfolded state, the length of the rotating shaft mechanism decreases. It will cause stretching, compression and other forces on the folding screen, thereby prolonging the service life of the folding screen.

In some possible implementation manners of the first aspect, the second connecting piece has a second sliding slot. The fourth swing arm has a first sliding part, and the first sliding part is slidably connected in the second slide slot. The second supporting member has a third sliding groove. The rotating shaft mechanism further includes a second rotating shaft, the second rotating shaft is arranged on the first sliding part, and a part of the second rotating shaft is slidably arranged in the third chute. In this way, the connection structure between the fourth swing arm and the second connecting member and the second supporting member is simplified, so that the structure of the rotating shaft mechanism is more compact, and it is convenient to assemble the rotating shaft mechanism.

In some possible implementation manners of the first aspect, the elastic support member is a metal sheet or a carbon fiber sheet. In this way, the structural strength of these materials is better, while ensuring the supporting strength of the elastic support, it is beneficial to reduce the thickness of the elastic support, so as to facilitate the thinning of the folding screen device. At the same time, these materials are elastic-plastic materials. When the elastic support is in the form of a sheet, the elastic support has elasticity, and the elastic support can be bent together with the folding screen.

In some possible implementation manners of the first aspect, along the extension direction of the rotation axis of the first swing arm and the base, the two ends of the elastic supporting member are respectively flush with the two ends of the first supporting member. In this way, the supporting surface of the elastic support can be made as large as possible, so that when the rotating shaft mechanism is in the unfolded state, the supporting surface of the rotating shaft mechanism has better flatness, ensuring the supporting performance of the supporting device for the folding screen. In addition, It is also convenient to fix the elastic support on the first support and the second support.

In a second aspect, the embodiment of the present application provides a supporting device, the supporting device includes a first housing and a rotating shaft mechanism. The rotating shaft mechanism is the rotating shaft mechanism described in any one of the above embodiments, and the first swing arm is connected to the first housing.

Since the support device provided in the embodiment of the present application includes the rotating shaft mechanism described in the above embodiment, both of them can solve the same problem and achieve the same effect, and will not be repeated here.

In a third aspect, an embodiment of the present application provides a folding screen device, and the folding screen device includes a folding screen and a supporting device. The folding screen includes a first part and a second part connected to each other. The support device is the support device described in the above embodiments, the first part is fixed on the first housing, and the second part is supported on the rotating shaft mechanism.

Since the folding screen device provided in the embodiment of the present application includes the supporting device described in the above embodiment, the two can solve the same problem and achieve the same effect.

Description of drawings

FIG. 1 is a perspective view of a folding screen device in an unfolded state provided by some embodiments of the present application;

FIG. 2 is a schematic diagram of a partial exploded structure of the folding screen device shown in FIG. 1;

FIG. 3 is a schematic structural diagram of the folding screen device shown in FIG. 1 when it is in a folded state;

FIG. 4 is a perspective view of the folding screen device shown in FIG. 1 when it is in a folded state;

Fig. 5 is a partial structural schematic diagram of the rotating shaft mechanism provided by some embodiments of the present application when it is in an unfolded state;

Fig. 6 is a partial structural schematic diagram of the rotating shaft mechanism shown in Fig. 5;

Fig. 7 is a structural schematic diagram of the shaft mechanism shown in Fig. 5 when it is in a folded state;

Fig. 8 is a schematic diagram of an assembly structure of the first support, the second support and the elastic support of the rotating shaft mechanism shown in Fig. 5;

Fig. 9 is a schematic diagram of the assembly of the rotating shaft mechanism and the folding screen shown in Fig. 8;

Fig. 10 is a schematic diagram of another assembly structure of the first support, the second support and the elastic support of the rotating shaft mechanism shown in Fig. 5;

Fig. 11 is a schematic diagram of the assembly of the rotating shaft mechanism and the folding screen shown in Fig. 10;

Fig. 12 is a perspective view of the rotating shaft mechanism provided by other embodiments of the present application when it is in an unfolded state;

Fig. 13 is a schematic diagram of an exploded structure of the rotating shaft mechanism shown in Fig. 12;

Fig. 14 is a partial structural schematic diagram of the rotating shaft mechanism shown in Fig. 12;

Fig. 15 is a cross-sectional structure diagram at the A-A line in Fig. 14;

Fig. 16 is a perspective view of the shaft mechanism shown in Fig. 14 when it is in a folded state;

Fig. 17 is a schematic diagram of the assembly of the partial structure of the rotating shaft mechanism shown in Fig. 14 and the first support member and the second support member;

Fig. 18 is a perspective view of the first support member of the rotating shaft mechanism shown in Fig. 17;

Fig. 19 is a perspective view of the shaft mechanism shown in Fig. 17 when it is in a folded state;

Fig. 20 is a perspective view of the second support member of the rotating shaft mechanism shown in Fig. 17;

Fig. 21 is a perspective view of the shaft mechanism shown in Fig. 19 viewed from another perspective;

Fig. 22 is a schematic structural view of the shaft mechanism shown in Fig. 12 when it is in a folded state;

Fig. 23 is a schematic diagram of the assembly of the rotating shaft mechanism and the folding screen shown in Fig. 22;

Fig. 24 is a perspective view of a partial structure of a rotating shaft mechanism provided in some other embodiments of the present application;

Fig. 25 is a schematic diagram of the assembly of the partial structure of the rotating shaft mechanism shown in Fig. 24 and the first support member and the second support member;

Fig. 26 is a schematic diagram of the partial structure of the rotating shaft mechanism shown in Fig. 25 and the assembly structure of the elastic support member in a folded state;

FIG. 27 is a schematic diagram of the assembly of the hinge mechanism shown in FIG. 26 and the folding screen.

Reference signs:

100-Folding screen device;

10-folding screen; 11-first part; 12-second part; 121-first transition section; 122-second transition section; 123-arc section; 13-third part;

20-support device; 21-first housing; 22-second housing; 23-rotating shaft mechanism; 231-base; 2311-first arc groove; 232-first swing arm; 232a-first part; 232b - the second part; 2321 - the first shaft hole; 2322 - the sixth mounting hole; 233 - the second swing arm; 2331 - the first arc-shaped protrusion; 2332 - the first mounting hole; 234 - the third swing arm; 2341 - the third mounting hole; 235 - the fourth swing arm; 2351 - the second shaft hole; 2352 - the first sliding part; 236 - the first connecting piece; 2361 - the second mounting hole; 2362 - the fourth chute; 237 - 2371-the fourth mounting hole; 2372-the second chute; 2373-the second arc-shaped protrusion; 2374-avoidance groove; 238-the first support member; 2381-the first extension; Five installation holes; 2382-the first protrusion; 2382a-the first chute; 239-elastic support; 2391-the first support part; 2392-the second support part; Protruding part; 2401a-second arc groove; 2402-third protruding part; 2402a-third chute; 241-third rotating shaft; 242-fourth rotating shaft; 243-first rotating shaft; 244-fifth rotating shaft 245-sixth rotating shaft; 246-second rotating shaft; 247-synchronous mechanism; 2471-first gear; 2472-second gear; 2473-transmission gear.

Detailed ways

In this embodiment of the application, it should be noted that unless otherwise specified and limited, the terms "installation" and "connection" should be understood in a broad sense. A detachable connection; it can be a direct connection or an indirect connection through an intermediary.

In this embodiment of the application, it should be understood that the orientation terms mentioned, for example, "upper", "lower", "left", "right", "inner", "outer", etc., are only for reference Therefore, the orientation terms used are for better and clearer description and understanding of the embodiments of the present application, rather than indicating or implying that the device or element referred to must have a specific orientation, be configured in a specific orientation, and operation, so it should not be construed as a limitation to the embodiments of the present application.

In this embodiment of the application, the terms "first", "second", "third", "fourth", "fifth", and "sixth" are used for descriptive purposes only, and should not be interpreted as indicating or implying Relative importance or implicit indication of the number of technical features indicated. Thus, features defined as "first", "second", "third", "fourth", "fifth", "sixth" may expressly or implicitly include one or more of such features .

In the embodiments of the present application, the term "comprising", "comprising" or any other variant thereof is intended to cover a non-exclusive inclusion, such that a process, method, article or device comprising a series of elements not only includes those elements, but also includes Including other elements not expressly listed, or also including elements inherent in such process, method, article or apparatus. Without further limitations, an element defined by the phrase "comprising a ..." does not preclude the presence of additional identical elements in the process, method, article, or apparatus comprising that element.

In the embodiment of this application, "and/or" is just a kind of relationship describing the relationship between related objects, which means that there may be three kinds of relationships, for example, A and/or B, which can mean that A exists alone, and A and B exist at the same time. B, there are three situations of B alone. In addition, the character "/" in this article generally indicates that the contextual objects are an "or" relationship.

In the embodiment of the present application, it should be noted that the descriptions "perpendicular" and "parallel" respectively mean approximately vertical and approximately parallel within a certain error range, and the error range can be less than Or a range equal to 5°, 8° or 10°, which is not specifically limited here.

The present application provides a folding screen device, which may be a type of electronic device with a folding screen. The foldable screen devices include but are not limited to mobile phones, tablet personal computers, personal digital assistants (PDAs), handheld devices with wireless communication functions, computing devices, vehicle-mounted devices, wearable devices, virtual reality ( Virtual reality (VR) terminal equipment, augmented reality (augmented reality, AR) terminal equipment, wireless terminals in industrial control (industrial control), wireless terminals in self-driving (selfdriving), wireless terminals in remote medical (remote medical) , wireless terminals in smart grid, wireless terminals in transportation safety, wireless terminals in smart city, wireless terminals in smart home and other mobile terminals or fixed terminals. The form of the folding screen device is not specifically limited in the embodiments of the present application.

Please refer to FIG. 1 and FIG. 2 . FIG. 1 is a perspective view of a folding screen device 100 in an unfolded state provided by some embodiments of the present application, and FIG. 2 is a schematic diagram of a partial exploded structure of the folding screen device 100 shown in FIG. 1 . This embodiment and the following embodiments are illustrated by taking the folding screen device 100 as a handheld device with a wireless communication function. The handheld device with a wireless communication function may be a mobile phone, for example. The folding screen device 100 is approximately in the shape of a rectangular plate in an unfolded state. In order to facilitate the description of the following embodiments, an XYZ coordinate system is established for the foldable screen device 100 in the unfolded state, and the length direction of the foldable screen device 100 is defined as the X-axis direction, and the width direction of the foldable screen device 100 is defined as the Y-axis direction , the thickness direction of the folding screen device 100 is the Z-axis direction. It can be understood that the setting of the coordinate system of the folding screen device 100 can be flexibly set according to actual needs, which is not specifically limited here. In some other embodiments, the shape of the folding screen device 100 may also be a square plate shape, a circular plate shape, an oval plate shape, and the like.

The folding screen device 100 includes a folding screen 10 and a supporting device 20 .

The folding screen 10 is used to display information such as images and videos. The folding screen 10 may be an organic light-emitting diode (OLED) screen, a micro organic light-emitting diode (micro organic light-emitting diode) screen, a quantum dot light-emitting diode (quantum dot light emitting diodes, QLED) screen, a liquid crystal display (liquid crystal display, LCD) and so on.

The folding screen 10 has a display area for displaying image information, and the display area of the folding screen 10 is exposed to present information such as images and videos to the user. The folding screen 10 includes a first part 11 , a second part 12 and a third part 13 connected in sequence, that is, the second part 12 is connected between the first part 11 and the third part 13 . In the embodiment shown in FIG. 1 and FIG. 2 , the folding screen 10 is in an unfolded state, and the first part 11 , the second part 12 , and the third part 13 are arranged in sequence along the X-axis direction. In this way, the folding screen device 100 is folded horizontally. In some other embodiments, when the folding screen 10 is in the unfolded state, the first part 11 , the second part, 12 and the third part 13 may also be arranged in sequence along the Y-axis direction. In this way, the folding screen device 100 is folded in the longitudinal direction. When the folding screen 10 is in the unfolded state, a large-screen display can be realized to provide the user with more abundant information and bring the user a better use experience.

At least the second part 12 of the folding screen 10 is a flexible screen structure. In this way, the second part 12 can be bent and deformed by an external force, so that the folding screen 10 can be folded from the unfolded state shown in FIG. 1 to the folded state. The first part 11 and the third part 13 of the folding screen 10 may have a flexible screen structure, may also be a hard screen structure, and may also have a part of a flexible screen structure and a part of a hard screen structure, which are not specifically limited here.

Please refer to FIG. 3 . FIG. 3 is a schematic structural diagram of the foldable screen device 100 shown in FIG. 1 in a folded state, and the foldable screen 10 in the foldable screen device 100 is also in a folded state. Specifically, when the folding screen 10 is in the folded state, the first part 11 and the third part 13 of the folding screen 10 are approximately parallel and opposite to each other. It should be noted that, if the angle between the first portion 11 and the third portion 13 is within 30°, it can be considered that the first portion 11 and the third portion 13 are approximately parallel. The fact that the first part 11 is opposite to the third part 13 means that the display surface of the first part 11 faces the display surface of the third part 13 .

When the folding screen 10 is in the folded state, please continue to refer to FIG. 3 , the second part 12 is folded into a water drop form, and in this form, the second part 12 includes an arc segment 123, a first transition segment 121 and a second transition segment 122. The first transition section 121 is connected between the arc section 123 and the first portion 11 . The second transition section 122 is connected between the arc section 123 and the third portion 13 . The distance between the end of the first transition section 121 connected to the first part 11 and the end of the second transition section 122 connected to the third part 13 is the first distance, and the first transition section 121 connects the end of the arc section 123 to the second transition section The distance between the ends of 122 connecting the arc segments 123 is a second distance, and the second distance is greater than the first distance. It can be understood that when the folding screen device is in the folded state, the second part 12 of the folding screen 10 can also be folded into other shapes according to actual needs, which is not limited in this application.

When the folding screen device 100 is in the folded state, please refer to FIG. 3 and FIG. 4 . FIG. 4 is a perspective view of the foldable screen device 100 shown in FIG. 1 when it is in the folded state. The support device 20 is protected outside the folding screen 10. The folding screen 10 is invisible to the user and can prevent the folding screen 10 from being scratched by hard objects. The folding screen device 100 is an inward-folding folding screen device, and the size of the folding screen device 100 is reduced ,easy to carry.

The supporting device 20 is used for supporting the folding screen 10 . The supporting device 20 includes a first housing 21 , a second housing 22 and a rotating shaft mechanism 23 . The first housing 21 carries the first part 11 and the second housing 22 carries the third part 13 . The rotating shaft mechanism 23 is connected between the first housing 21 and the second housing 22 and carries the second part 12 , that is, the second part 12 of the folding screen 10 is supported on the rotating shaft mechanism 23 . The hinge mechanism 23 is used to realize the rotation between the second casing 22 and the first casing 21 to support the folding of the folding screen 10 between the unfolded state and the folded state.

In some embodiments, the first casing 21 may include a middle frame and a back cover connected together, and the first part 11 of the folding screen 10 is carried on the middle frame of the first casing 21. Specifically, the first part 11 may be glued The back cover is located on the side of the middle frame away from the first part 11, and the back cover can be replaced by a display screen (such as an LCD display screen). An accommodating cavity is formed between the middle frame and the back cover, and the accommodating cavity is used for accommodating electronic components such as a motherboard, a camera module, and a battery. On this basis, the first housing 21 can be connected to the rotating shaft mechanism 23 by means of the middle frame, or can be connected to the rotating shaft mechanism 23 by means of the back cover. The following embodiments are illustrated by taking the connection of the first housing 21 with the rotating shaft mechanism 23 by means of the middle frame as an example.

Similarly, the second casing 22 may also include a middle frame and a back cover connected together, and the third part 13 of the folding screen 10 is carried on the middle frame of the second casing 22. Specifically, the third part 13 may be glued The back cover is located on the side of the middle frame away from the third part 13, and the back cover can also be replaced by a display screen (such as an LCD display screen). An accommodating cavity is formed between the middle frame and the back cover, and the accommodating cavity is used for accommodating electronic components such as sub-boards, speaker modules, chips, and batteries. On this basis, the second housing 22 can be connected to the rotating shaft mechanism 23 by means of the middle frame, or can be connected to the rotating shaft mechanism 23 by means of the back cover. The following embodiments are described by taking the connection of the second housing 22 with the rotating shaft mechanism 23 by means of the middle frame as an example.

Since the folding screen device 100 is folded from the unfolded state to the folded state, the rotation radius of the folding screen 10 is smaller than the rotation radius of the rotating shaft mechanism 23, therefore, the rotating shaft mechanism 23 needs to be able to be extended and shortened, so as to realize that the folding screen device 100 is in the folded state. When the folding screen device 100 is in the unfolded state, it accommodates the second part 12 of the folding screen 10 and supports the second part 12 of the folding screen 10 when the folding screen device 100 is in the unfolded state. Based on this, please refer to FIG. 5 and FIG. 6 . FIG. 5 is a partial structural diagram of the rotating shaft mechanism 23 provided by some embodiments of the present application when it is in an unfolded state. FIG. 6 is a partial structural schematic diagram of the rotating shaft mechanism 23 shown in FIG. 5 . The rotating shaft mechanism 23 includes a base 231, a first swing arm 232, a second swing arm 233, a third swing arm 234, a fourth swing arm 235, a first connecting member 236, a second connecting member 237, a first supporting member 238 and The second supporting member 240 .

The base 231 provides a positional reference within the shaft mechanism 23 . The shape of the base 231 can be various, and the base 231 can be a structural whole, and can also be formed by assembling a plurality of parts. The material of the base 231 includes but not limited to metal and plastic.

One end of the second swing arm 233 is rotatably connected to the base 231, and the other end is rotatably connected to the first connecting member 236; one end of the first swing arm 232 is rotatably connected to the base 231, and the other end is slidably connected to the first connecting member 236; The first support member 238 is rotatably connected to the first connecting member 236 and is slidably connected to the first swing arm 232 . One end of the third swing arm 234 is rotatably connected to the base 231, and the other end is rotatably connected to the second connecting member 237; one end of the fourth swing arm 235 is rotatably connected to the base 231, and the other end is slidably connected to the second connecting member 237; The second supporting member 240 is rotatably connected to the second connecting member 237 and is slidably connected to the fourth swing arm 235 . The first connecting piece 236 is used to be fixedly connected to the middle frame of the first housing 21 through screws, clamping, etc., and the second connecting piece 237 is used to be connected to the middle frame of the second housing 22 through screws, clamping, etc. fixed connection.

Please refer to FIG. 7 . FIG. 7 is a schematic structural view of the hinge mechanism 23 shown in FIG. 5 when it is in a folded state. When the first connecting part 236 and the second connecting part 237 rotate in opposite directions, the first connecting part 236 drives the first swing arm 232 to rotate synchronously, and the first connecting part 236 and the second swing arm 233 extend relative to the first swing arm 232, The second connecting member 237 drives the fourth swing arm 235 to rotate synchronously, and the second connecting member 237 and the third swing arm 234 extend and move relative to the fourth swing arm 235 to increase the length of the rotating shaft mechanism 23 . The first swing arm 232 slidably connected to the first support member 238 drives the first support member 238 to rotate relative to the first connecting member 236 , and the fourth swing arm 235 slidably connected to the second support member 240 drives the second support member 240 to rotate relative to the first support member 238 . The two connecting parts 237 rotate, the direction in which the first supporting part 238 rotates relative to the first connecting part 236 is the same as the direction in which the first connecting part 236 rotates relative to the base 231, and the direction in which the second supporting part 240 rotates relative to the second connecting part 237 is the same as The second connecting part 237 rotates in the same direction relative to the base 231 , so that the first supporting part 238 , the second supporting part 240 and the base 231 enclose a space for accommodating the second part 12 of the folding screen 10 .

Please refer back to FIG. 5 , when the first connecting member 236 and the second connecting member 237 rotate away from each other, the first connecting member 236 drives the first swing arm 232 to rotate synchronously, and the first connecting member 236 and the second swing arm 233 are opposite to the first connecting member 233. One swing arm 232 shrinks and moves, the second connecting piece 237 drives the fourth swing arm 235 to rotate synchronously, and the second connecting piece 237 and the third swing arm 234 shrink and move relative to the fourth swing arm 235, so as to reduce the length of the rotating shaft mechanism 23 . The first swing arm 232 slidably connected to the first support member 238 drives the first support member 238 to rotate relative to the first connecting member 236 , and the fourth swing arm 235 slidably connected to the second support member 240 drives the second support member 240 to rotate relative to the first support member 238 . The two connecting parts 237 rotate, the direction in which the first supporting part 238 rotates relative to the first connecting part 236 is the same as the direction in which the first connecting part 236 rotates relative to the base 231, and the direction in which the second supporting part 240 rotates relative to the second connecting part 237 is the same as The second connecting member 237 rotates in the same direction relative to the base 231 , so that the first supporting member 238 and the second supporting member 240 are flattened into a supporting surface.

Please refer to Fig. 8 and Fig. 9, Fig. 8 is a schematic diagram of an assembly structure of the first support 238, the second support 240 and the elastic support 239 of the shaft mechanism 23 shown in Fig. 5, and Fig. 9 is the shaft shown in Fig. 8 Schematic diagram of the assembly of the mechanism 23 and the folding screen 10 . The rotating shaft mechanism 23 further includes an elastic support 239 stacked on the front side of the first support 238 , the base 231 and the second support 240 . It should be noted that the front side of the first support 238, the base 231 and the second support 240 refers to the side facing the folding screen 10 of the first support 238, the base 231 and the second support 240, and the rear The "front side" used in the description of other components in the hinge mechanism 23 in the various embodiments herein refers to the side of the described component facing the folding screen 10, and the "back side" used in other components in the hinge mechanism 23 refers to the side of the described component that faces away from the folding screen 10. One side of the folding screen 10 will not be described in detail in the following embodiments.

Specifically, the elastic support member 239 can be a bendable metal sheet, and the two sides of one end of the elastic support member 239 are bonded to the first transition between the first support member 238 and the second part 12 of the folding screen 10 respectively. The segment 121 is fixed, and the two sides of the other end of the elastic support member 239 are respectively fixed to the second support member 240 and the second transition section 122 of the second part 12 of the folding screen 10 by means of glue.

When the folding screen device 100 is bent, the length of the rotating shaft mechanism 23 will increase, and the elastic support 239 cannot be elastically stretched and deformed. Therefore, in order to prevent the folding screen device 100 from pulling the elastic support 239 is separated from the parts bonded thereto, and the elastic support member 239 is spliced by two parts, one part is fixed on the first support member 238 and the other part is fixed on the second support member 240 . In this way, when the folding screen device 100 moves between the unfolded state and the folded state, the free floating ends of the two parts of the elastic support 239 that are opposite to each other will scratch the base 231, causing damage to the base 231 and generating abnormal noises. Moreover, there is a gap between the two parts of the elastic support member 239, which makes the reliability of the rotating shaft mechanism 23 and the support performance for the folding screen 10 poor, reduces the impact resistance of the folding screen 10, and makes the folding screen 10 prone to creases and The impact breaks the bright spots, thereby reducing the reliability of the whole machine and affecting the user experience.

Please refer to FIG. 10 and FIG. 11. FIG. 10 is a schematic diagram of another assembly structure of the first support member 238, the second support member 240 and the elastic support member 239 of the shaft mechanism 23 shown in FIG. Schematic diagram of the assembly of the hinge mechanism 23 and the folding screen 10 . The difference between the embodiment shown in Fig. 10 and Fig. 11 and the embodiment shown in Fig. 8 and Fig. 9 is that the elastic supporting member 239 is a bendable integral metal sheet, and the two sides of one end of the elastic supporting member 239 They are respectively fixed to the second support member 240 and the second transition section 122 of the second part 12 of the folding screen 10 by bonding, and the other end is a free end, that is, the other end is not connected to other components. In this way, the elastic supporting member 239 can provide a continuous and complete supporting surface for the second portion 12 of the folding screen 10 , improving the supporting performance of the elastic supporting member 239 on the folding screen 10 , and further improving the impact resistance of the folding screen 10 . However, during the folding and unfolding process of the folding screen device 100 , the free end of the elastic support 239 will also rub against the folding screen 10 , causing damage to the folding screen 10 and causing abnormal noise, which also affects the user experience.

In order to solve the above problems, please refer to Fig. 12 and Fig. 13. Fig. 12 is a perspective view of the rotating shaft mechanism 23 in an unfolded state provided by other embodiments of the present application, and Fig. 13 is a schematic diagram of an exploded structure of the rotating shaft mechanism 23 shown in Fig. 12 . The rotating shaft mechanism 23 includes a base 231, a first swing arm 232, a second swing arm 233, a third swing arm 234, a fourth swing arm 235, a first connecting piece 236, a second connecting piece 237, a first supporting piece 238, The elastic support 239 and the second support 240 .

In the embodiment shown in FIG. 12 and FIG. 13 , the first swing arm 232 and the fourth swing arm 235 may be called auxiliary swing arms, and the second swing arm 233 and the third swing arm 234 may be called main swing arms. The first swing arm 232 and the fourth swing arm 235 can be arranged on opposite sides of the base 231, and the second swing arm 233 and the third swing arm 234 can be arranged on opposite sides of the base 231, that is, the first swing arm 232 The second swing arm 233 and the third swing arm 234 may be disposed on opposite sides of the base 231 along the X-axis direction. Wherein, the first swing arm 232 and the second swing arm 233 are arranged on the same side of the base 231, that is, the first swing arm 232 and the second swing arm 233 can be arranged along the Y-axis direction, and the third swing arm 234 and the fourth swing arm The arms 235 may be aligned in the Y-axis direction. In some other embodiments, the first swing arm 232 and the fourth swing arm 235 may also be called a main swing arm, and the second swing arm 233 and the third swing arm 234 may also be called a secondary swing arm. In some other embodiments, the first swing arm 232 and the third swing arm 234 may also be called secondary swing arms, and the second swing arm 233 and the fourth swing arm 235 may also be called main swing arms.

Please refer to FIG. 13 and FIG. 14 . FIG. 14 is a partial structural diagram of the rotating shaft mechanism 23 shown in FIG. 12 . In FIG. 14 , the elastic supporting member 239 , the first supporting member 238 and the second supporting member 240 are hidden. The first swing arm 232 is rotatably connected to the base 231 , the rotation axis of the first swing arm 232 and the base 231 is a first axis, and the extending direction of the first axis is parallel to the Y axis. Specifically, the end of the first swing arm 232 close to the base 231 has a first shaft hole 2321, the shaft mechanism 23 also includes a third shaft 241, the third shaft 241 is arranged on the base 231, and the third shaft 241 passes through the The first shaft hole 2321 is used to realize the rotatable connection between the first swing arm 232 and the base 231 , and the axis of the third rotating shaft 241 is the first axis. In some examples, the first swing arm 232 may be relatively fixed to the third rotating shaft 241 , and the third rotating shaft 241 is rotatably connected to the base 231 . In some other examples, the first swing arm 232 may also be rotatably connected to the third rotating shaft 241 , and the third rotating shaft 241 is fixed on the base 231 .

In some other embodiments, one of the first swing arm 232 and the base 231 may have an arc-shaped groove, and the other may be provided with an arc-shaped protrusion, and the arc-shaped protrusion is adapted to the arc-shaped groove. The arc-shaped protrusion is slidably disposed in the arc-shaped groove to realize the rotatable connection between the first swing arm 232 and the base 231 , and the axis of the arc-shaped groove is the first axis.

Please refer to Fig. 13-Fig. 15, Fig. 15 is a cross-sectional structure diagram at the line A-A in Fig. 14 . It should be noted that, in this embodiment, "at the A-A line" refers to the A-A line and the plane where the arrows at both ends of the A-A line are located. . The second swing arm 233 is rotatably connected to the base 231, the rotation axis of the second swing arm 233 and the base 231 is the second axis, and the second axis is parallel to the first axis, that is, the extending direction of the second axis is the same as the Y axis. Parallel, the second axis is not collinear with the first axis. Specifically, the end of the second swing arm 233 close to the base 231 is provided with a first arc-shaped protrusion 2331, and the base 231 has a first arc-shaped groove 2311 adapted to the first arc-shaped protrusion 2331. The arc-shaped protrusion 2331 is slidably disposed in the first arc-shaped groove 2311 to realize the rotatable connection between the second swing arm 233 and the base 231 , and the axis of the first arc-shaped groove 2311 is the second axis. The number of the first arc-shaped protrusions 2331 is two, and the two first arc-shaped protrusions 2331 are respectively disposed on two surfaces of the second swing arm 233 arranged along the extending direction of the second axis. In some other embodiments, the number of the first arc-shaped protrusion 2331 may also be one, which is not limited in this application.

In some other embodiments, the second swing arm 233 is provided with a first arc-shaped slot 2311, and the base 231 is provided with a first arc-shaped protrusion 2331, and the first arc-shaped protrusion 2331 is slidably disposed on the first arc. inside the groove 2311. In some other embodiments, the second swing arm 233 and the base 231 may also be rotatably connected through hinged joints.

Please continue to refer to Figures 13-15, the third swing arm 234 is rotatably connected to the base 231, the rotation axis of the third swing arm 234 and the base 231 is the third axis, and the third axis is parallel to the first axis, that is The extension direction of the third axis is parallel to the Y axis. The structure of the third swing arm 234 and the connection structure with the base 231 may be the same as that of the second swing arm 233 , which will not be repeated here.

Please continue to refer to Figures 13 and 14, the fourth swing arm 235 is rotatably connected to the base 231, the rotation axis between the fourth swing arm 235 and the base 231 is the fourth axis, and the fourth axis is parallel to the third axis, that is The extension direction of the fourth axis is parallel to the Y axis, and the fourth axis and the third axis are not collinear. Specifically, the end of the fourth swing arm 235 close to the base 231 has a second shaft hole 2351, the shaft mechanism 23 also includes a fourth shaft 242, the fourth shaft 242 is arranged on the base 231, and the fourth shaft 242 passes through the The second shaft hole 2351 is used to realize the rotatable connection between the fourth swing arm 235 and the base 231 , and the axis of the fourth rotating shaft 242 is the fourth axis. In some examples, the fourth swing arm 235 may be relatively fixed to the fourth rotating shaft 242 , and the fourth rotating shaft 242 is rotatably connected to the base 231 . In some other examples, the fourth swing arm 235 may also be rotatably connected to the fourth rotating shaft 242 , and the fourth rotating shaft 242 is fixed on the base 231 .

In some other embodiments, one of the fourth swing arm 235 and the base 231 may have an arc-shaped groove, and the other may be provided with an arc-shaped protrusion, and the arc-shaped protrusion is adapted to the arc-shaped groove. The arc-shaped protrusion is slidably disposed in the arc-shaped groove to realize the rotatable connection between the fourth swing arm 235 and the base 231 , and the axis of the arc-shaped groove is the fourth axis.

The first connecting piece 236 and the second connecting piece 237 are respectively used to be fixedly connected to the first shell 21 and the second shell 22, that is, the first connecting piece 236 is relatively fixed to the first part 11 of the folding screen 10, and the second connecting piece 237 is relatively fixed to the third part 13 of the folding screen 10 . Please continue to refer to FIGS. 13-15 , the first connecting member 236 is rotatably connected to the second swing arm 233 and is slidably connected to the first swing arm 232 . Specifically, the end of the second swing arm 233 away from the base 231 has a first mounting hole 2332 , the end of the first connecting member 236 close to the base 231 has a second mounting hole 2361 , and the rotating shaft mechanism 23 also includes a first rotating shaft 243 The first rotating shaft 243 passes through the first mounting hole 2332 and the second mounting hole 2361 to realize the rotational connection between the first connecting member 236 and the second swing arm 233 , and the axis of the first rotating shaft 243 is parallel to the first axis. The first rotating shaft 243 can be fixed with the second swing arm 233 or can rotate relative to the second swing arm 233 , that is, the first rotating shaft 243 is disposed on the second swing arm 233 .

In some other embodiments, the second swing arm 233 may not include the second installation hole 2361 , and the first rotating shaft 243 is disposed on the end surface of the second swing arm 233 along the extension direction of the first axis. In some other embodiments, the first mounting hole 2332 may also be opened in the second swing arm 233 , the first rotating shaft 243 is disposed in the first connecting member 236 , and the first rotating shaft 243 passes through the first mounting hole 2332 . In this way, the first connecting member 236 and the second swing arm 233 are rotationally connected through the rotating shaft, and the connection is reliable and the assembly is convenient. On this basis, the surface of the first connecting member 236 facing the base 231 has a fourth sliding groove 2362, the fourth sliding groove 2362 extends in a direction perpendicular to the first axis, and the end of the first swing arm 232 away from the base 231 It can be slidably disposed in the fourth sliding slot 2362 . In some other embodiments, the first connecting member 236 may also be rotatably connected to the first swing arm 232 and slidably connected to the second swing arm 233 .

Please continue to refer to FIGS. 13-15 , the second connecting member 237 is rotatably connected to the third swing arm 234 and slidably connected to the fourth swing arm 235 . Specifically, the end of the third swing arm 234 away from the base 231 has a third mounting hole 2341 , the end of the second connecting member 237 close to the base 231 has a fourth mounting hole 2371 , and the rotating shaft mechanism 23 also includes a fifth rotating shaft 244 The fifth shaft 244 passes through the third mounting hole 2341 and the fourth mounting hole 2371 to realize the rotatable connection between the second connecting member 237 and the third swing arm 234 , and the axis of the fifth shaft 244 is parallel to the third axis. In this way, the second connecting member 237 is rotationally connected to the third swing arm 234 through the rotating shaft, and the connection is reliable and the assembly is convenient. On this basis, the surface of the second connecting member 237 facing the base 231 has a second sliding groove 2372, the second sliding groove 2372 extends in a direction perpendicular to the third axis, and the end of the fourth swing arm 235 away from the base 231 A first sliding portion 2352 is formed, and the first sliding portion 2352 is slidably disposed in the second slide groove 2372 .

Based on the above, please refer to FIG. 14 and FIG. 16 . FIG. 16 is a perspective view of the hinge mechanism 23 shown in FIG. 14 in a folded state. The first swing arm 232 and the third swing arm 234 can rotate relative to the base 231 to move the hinge mechanism 23 between the unfolded state and the folded state.

When the first swing arm 232 and the third swing arm 234 rotate relative to the base 231 to move the hinge mechanism 23 from the unfolded state to the folded state, the first connecting member 236 rotates synchronously with the first swing arm 232 , and relative to the first swing arm 232 A swing arm 232 moves away from the base 231 in a direction perpendicular to the first axis, and the distance between the end of the first connecting member 236 away from the base 231 and the second axis increases, that is, the first connecting member 236 moves away from the base 231 in a direction perpendicular to the first axis, and the second link 237 rotates synchronously with the fourth swing arm 235 , and is perpendicular to the fourth swing arm 235 . Moving in the direction of the third axis away from the base 231, the distance between the end of the second connecting member 237 away from the base 231 and the third axis increases, that is, the distance between the end of the second connecting member 237 away from the base 231 The end of the hinge moves away from the base 231 in a direction perpendicular to the third axis, so as to increase the length of the hinge mechanism 23 and adapt to the change of the shape of the second part 12 of the folding screen 10 .

When the first swing arm 232 and the third swing arm 234 rotate relative to the base 231 to move the hinge mechanism 23 from the folded state to the unfolded state, the first connecting member 236 rotates synchronously with the first swing arm 232 , and relative to the first swing arm 232 A swing arm 232 moves toward the base 231 in a direction perpendicular to the first axis, and the distance between the end of the first connecting member 236 away from the base 231 and the second axis decreases, that is, the first connecting member The end of the base 236 away from the base 231 moves toward the base 231 in a direction perpendicular to the first axis, and the second link 237 rotates synchronously with the fourth swing arm 235 , and is perpendicular to the fourth swing arm 235 Moving in the direction of the third axis toward the base 231, the distance between the end of the second connecting member 237 away from the base 231 and the third axis decreases, that is, the end of the second connecting member 237 away from the base 231 The end of the hinge moves toward the base 231 in a direction perpendicular to the third axis, so as to reduce the length of the hinge mechanism 23 and adapt to the shape change of the second part 12 of the folding screen 10 . In this way, the hinge mechanism 23 can provide accommodating space and reliable support for the second part 12 of the folding screen 10 .

In the above embodiments, the first swing arm 232 and the second swing arm 233 are connected to the first casing 21 through the first connecting piece 236 , and the third swing arm 234 and the fourth swing arm 235 are connected to the second swing arm 237 through the second connecting piece 237 . The housing 22 is connected. In some other embodiments, the hinge mechanism 23 may not include the first connecting piece 236 and the second connecting piece 237, and the middle frame of the first housing 21 may be directly connected to both the first swing arm 232 and the second swing arm 233. One of them is rotationally connected and is slidingly connected with the other. The middle frame of the second housing 22 may be directly connected in rotation with one of the third swing arm 234 and the fourth swing arm 235 and slidably connected with the other.

On the basis of the above, please refer to Fig. 17 and Fig. 18, Fig. 17 is a schematic diagram of the assembly of the partial structure of the shaft mechanism 23 shown in Fig. A perspective view of the first support 238 of the mechanism 23 . The first supporting member 238 is approximately in the shape of a rectangular flat plate, and the extending direction of the long side of the first supporting member 238 is parallel to the Y-axis. The first support member 238 is located at the front side of the first swing arm 232 ; the end of the first support member 238 away from the base 231 is rotatably connected to the first swing arm 232 . Specifically, the end of the first support member 238 away from the base 231 is provided with a first extension 2381, the first extension 2381 has a fifth mounting hole 2381a, and the end of the first swing arm 232 away from the base 231 has a The sixth mounting hole 2322, the rotating shaft mechanism further includes a sixth rotating shaft 245, the sixth rotating shaft 245 is passed through the fifth mounting hole 2381a and the sixth mounting hole 2322, so as to realize the rotation of the first support member 238 and the first swing arm 232 connect.

In some examples, please refer to FIG. 19 , which is a perspective view of the hinge mechanism 23 shown in FIG. 17 in a folded state. The end of the second swing arm 233 away from the base 231 may include a first part 232a and a second part 232b spaced apart from each other along the extending direction of the first axis, and the first part 232a is slidably arranged in the fourth sliding groove of the first connecting member 236 Within 2362, a sixth mounting hole 2322 is located on the second portion 232b. In this way, the end of the first swing arm 232 away from the base 231 can be slidably connected to the first connecting piece 236 so that the inclination angle of the first connecting piece 236 relative to the front side surface of the base 231 is the same as that of the first part. 232a has the same inclination angle with respect to the front surface of the base 231, and is rotatably connected with the first support member 238 to control the rotation angle of the first support member 238 relative to the base 231 as a whole. The structure is simple and easy to realize. In some other embodiments, one of the first extension part 2381 and the first swing arm 232 may be provided with an arc-shaped protrusion, and the other may be provided with an arc-shaped protrusion matching the arc-shaped protrusion. The slot is slidably disposed in the arc-shaped slot through the arc-shaped protrusion to realize the rotatable connection between the first support member 238 and the first swing arm 232 .

On this basis, please refer to FIGS. 17-19 , the first support member 238 is also slidably connected with the second swing arm 233 along a direction perpendicular to the first axis. In this way, the second swing arm 233 can control the inclination angle of the first support member 238 relative to the front side surface of the base 231, so as to avoid the second part 12 of the folding screen 10 when the hinge mechanism 23 is in the folded state, and The hinge mechanism 23 supports the second part 12 of the folding screen 10 when it is in an unfolded state. Specifically, the back side of the first support member 238 has a first protruding portion 2382, and the first protruding portion 2382 has a first sliding groove 2382a, and a part of the aforementioned first rotating shaft 243 is slidably disposed in the first sliding groove 2382a. Inside.

In this way, the first rotating shaft 243 can be used not only to realize the rotatable connection between the first connecting member 236 and the second swing arm 233 , but also to realize the slidable connection between the first support member 238 and the second swing arm 233 , The connection structure is simplified, so that the structure of the rotating shaft mechanism 23 is more compact, and it is convenient to assemble the rotating shaft mechanism 23 . In the embodiment shown in FIGS. 17-19 , there are two first sliding slots 2382a, and the two ends of the first rotating shaft 243 are respectively slidably disposed in the two first sliding slots 2382a. In some other embodiments, the number of the first sliding slot 2382a may also be one, and one end of the first rotating shaft 243 is slidably disposed in the first sliding slot 2382a, which is not limited in the present application. In some other embodiments, the first sliding slot 2382a can also be arranged on the second swing arm 233, and a sliding bar is arranged on the first protrusion 2382, and the sliding bar is slidably arranged in the first sliding slot 2382a, The slidable connection between the first support member 238 and the second swing arm 233 is realized.

It should be noted that the aforementioned first support member 238 is located on the front side of the first swing arm 232 , which means that the part of the first support member 238 other than the first extension portion 2381 and the first raised portion 2382 is located on the first swing arm 232 . the front side.

Please refer to FIG. 20 and FIG. 21 , FIG. 20 is a perspective view of the second support member 240 of the hinge mechanism 23 shown in FIG. 17 , and FIG. 21 is a perspective view of the hinge mechanism 23 shown in FIG. 19 viewed from another angle. The second supporting member 240 is approximately in the shape of a rectangular plate, and the extending direction of the long side of the second supporting member 240 is parallel to the Y axis. The second supporting piece 240 is located at the front side of the third swing arm 234 , and the second supporting piece 240 is also located at the front side of the second connecting piece 237 . One end of the second supporting member 240 away from the base 231 is rotatably connected to the second connecting member 237, that is, the end of the second supporting member 240 away from the base 231 is indirectly rotatably connected to the third connecting member 237 through the second connecting member 237. On the swing arm 234. Specifically, a second protrusion 2401 is provided on the back side surface of the end of the second supporting member 240 away from the base 231, and the second protrusion 2401 has a second arc-shaped groove 2401a, and the second connecting member 237 is away from One end of the base 231 is provided with a second arc-shaped protrusion 2373, the second arc-shaped protrusion 2373 fits with the second arc-shaped groove 2401a, and the second arc-shaped protrusion 2373 is slidably disposed in the second arc-shaped groove 2401a to realize the rotatable connection between the second supporting member 240 and the second connecting member 237 .

In the embodiment shown in FIG. 20 and FIG. 21 , the number of the second arc-shaped protrusions 2373 is two, and the two second arc-shaped protrusions 2373 are respectively arranged in the extending direction of the second connecting member 237 along the third axis. Correspondingly, there are also two second arc-shaped grooves 2401a, and the two second arc-shaped protrusions 2373 correspond to the two second arc-shaped grooves 2401a one-to-one. In some other embodiments, the number of the second arc-shaped protrusion 2373 and the number of the second arc-shaped groove 2401a can also be one. In some other embodiments, the second connecting member 237 may have a second arc-shaped groove 2401a, the second supporting member 240 may be provided with a second arc-shaped protrusion 2373, and the second arc-shaped protrusion 2373 is slidably disposed on In the second arc-shaped groove 2401a, the rotatable connection between the second connecting member 237 and the second supporting member 240 is realized. In some other embodiments, the second supporting member 240 and the second connecting member 237 may also be rotatably connected through hinged hinges.

On this basis, the second support member 240 is also slidably connected with the fourth swing arm 235 or the third swing arm 234 along a direction perpendicular to the third axis. In this way, the fourth swing arm 235 or the third swing arm 234 can control the inclination angle of the second support member 240 relative to the front side surface of the base 231, so as to avoid the first swing of the folding screen 10 when the hinge mechanism 23 is in the folded state. Two parts 12, and the second part 12 supporting the folding screen 10 when the hinge mechanism 23 is in the unfolded state. Please refer to Fig. 16, Fig. 20 and Fig. 21, specifically, the back side surface of the second support member 240 has a third protrusion 2402, and the third protrusion 2402 has a third sliding groove 2402a, and the rotating shaft mechanism 23 also includes The second rotating shaft 246 is disposed on the end of the fourth swing arm 235 away from the base 231 , and a part of the second rotating shaft 246 is slidably disposed in the third slide slot 2402a. In this way, the connection structure between the fourth swing arm 235 and the second connecting member 237 and the second supporting member 240 is simplified, so that the structure of the rotating shaft mechanism 23 is more compact, and it is convenient to assemble the rotating shaft mechanism 23 .

In the embodiment shown in FIG. 16 , FIG. 20 and FIG. 21 , the second connecting member 237 has an escape groove 2374 passing through its front and back surfaces, and a part of the third protrusion 2402 is located in the avoidance groove 2374 . The end of the fourth swing arm 235 away from the base 231 includes first sliding parts 2352 spaced apart from each other along the extending direction of the fourth axis, and the second rotating shaft 246 is disposed on a surface of the first sliding parts 2352 facing the escape groove 2374 . The number of the second rotating shaft 246 and the third chute 2402a are both two, the two second rotating shafts 246 are respectively arranged on the surfaces of the two first sliding parts 2352 opposite to each other, and the two third chute 2402a are respectively arranged on the third The two opposite surfaces of the protruding portion 2402 and the two second shafts 246 are slidably disposed in the third slide groove 2402a in a one-to-one correspondence. In some other embodiments, the number of the second rotating shaft 246 can be one, the second rotating shaft 246 is connected between the two first sliding parts 2352, and the third slide groove 2402a runs through the opposite sides of the third protruding part 2402. On both surfaces, the second rotating shaft 246 passes through the third sliding slot 2402a.

In some other embodiments, the third sliding slot 2402a may also be provided on the fourth swing arm 235, the third protrusion 2402 is provided with a second rotating shaft 246, and the second rotating shaft 246 is slidably provided on the third slide. In the slot 2402a, the slidable connection between the second support member 240 and the fourth swing arm 235 is realized. In some other embodiments, one of the third swing arm 234 and the second support member 240 has a sliding groove, and the other has a sliding rod, and the sliding rod is slidably arranged in the sliding groove to realize the third The slidable connection of the swing arm 234 and the second support 240 .

It should be noted that the aforementioned second support member 240 is located on the front side of the third swing arm 234, which means that the part of the second support member 240 other than the second protrusion 2401 and the third protrusion 2402 is located on the third swing arm. 234's front side.

Please refer back to FIG. 12 and FIG. 13 , the elastic supporting member 239 is approximately in the shape of a rectangular sheet, and the extending direction of the long side of the elastic supporting member 239 is parallel to the Y-axis. The elastic support 239 includes a connected first support part 2391 and a second support part 2392. When the hinge mechanism 23 is in the unfolded state, the first support part 2391 is stacked on the front side of the first support 238 and the base 231. The second support portion 2392 is stacked on the front side of the second support member 240 . The first supporting part 2391 of the elastic supporting part 239 is fixed on the first supporting part 238 , and the second supporting part 2392 is fixed on the second supporting part 240 . In some examples, the first support portion 2391 of the elastic support 239 is bonded to the front surface of the first support 238 , and the second support portion 2392 of the elastic support 239 is bonded to the front surface of the second support 240 . In some other examples, the first supporting part 2391 of the elastic supporting part 239 can also be fixed on the front side surface of the first supporting part 238 through screw connection, riveting, welding, etc., and the second supporting part 2392 of the elastic supporting part 239 can also be It can be fixed on the front side surface of the second support member 240 through screw connection, riveting, welding and other methods.

On the basis of the above, please refer to FIG. 22 , which is a schematic structural diagram of the hinge mechanism 23 shown in FIG. 12 when it is in a folded state. When the first swing arm 232 rotates relative to the base 231 to move the hinge mechanism 23 from the unfolded state to the folded state, the second swing arm 233 drives the end of the first support member 238 close to the base 231 relative to the first support member. One end of 238 away from base 231 is inclined to the back side of first swing arm 232; The fourth swing arm 235 or the third swing arm 234 slidably connected by 240 drives the end of the second support member 240 close to the base 231 relative to the end of the second support member 240 away from the base 231 to the back of the third swing arm 234 The side is inclined; the elastic support 239 is bent. In this way, the first support member 238, the base 231 and the second support member 240 can form a water drop-shaped containment space, and then the elastic support 239 can be bent to form a water drop-shaped containment space, which can Fold the second part 12 of the folding screen 10 into a drop shape, so as to reduce the inner folding angle of the second part 12, reduce the probability of creases on the folding screen 10, ensure the display effect of the folding screen 10, and prolong the service life of the folding screen 10 .

Please refer back to FIG. 12 , when the first swing arm 232 and the third swing arm 234 rotate relative to the base 231 to move the hinge mechanism 23 from the folded state to the unfolded state, the second swing arm 233 drives the first support member 238 The end close to the base 231 rotates to the front side of the first swing arm 232 relative to the end of the first support member 238 away from the base 231, and the fourth swing arm 235 or the third swing arm slidably connected with the second support member 240 234 drives the end of the second support 240 close to the base 231 to rotate to the front side of the third swing arm 234 relative to the end of the second support 240 away from the base 231, so that the first support 238 and the second support The members 240 are located in the same plane, and the elastic supporting member 239 is flattened to form a supporting surface. In this way, the first supporting member 238 and the second supporting member 240 can form a reliable support for the elastic supporting member 239, which is conducive to improving the flatness of the elastic supporting member 239, and then can make the elastic supporting member 239 support the first support of the folding screen 10. The two parts 12 form a reliable support, thereby improving the flatness of the folding screen 10 .

On the basis of the above, please refer to FIG. 23 , which is a schematic diagram of the assembly of the hinge mechanism 23 shown in FIG. 22 and the folding screen 10 . Since the end of the first support member 238 away from the base 231 is rotatably connected to the first swing arm 232, the first swing arm 232 is rotatably connected to the base 231, so that the first swing arm 232 rotates relative to the base 231 When the rotating shaft mechanism 23 is moved from the expanded state to the folded state, the distance between the end of the first support member 238 away from the base 231 and the rotation axis (first axis) of the first swing arm 232 and the base 231 is not When the second part 12 of the folding screen 10 is bent and the shaft mechanism 23 is extended, the first supporting member 238 can slide relative to the folding screen 10 toward the base 231, therefore, there is no need for the elastic supporting member 239 to divide body structure, that is, the two ends of the elastic support member 239 are respectively fixed on the first support member 238 and the second support member 240, thereby providing a continuous and complete support surface for the second part 12 of the folding screen 10, and improving the support device 20. The supporting performance of the folding screen 10 further improves the impact resistance of the folding screen 10 . In addition, since the two ends of the elastic supporting member 239 are respectively fixed to the first supporting member 238 and the second supporting member 240 , it is possible to prevent the ends of the elastic supporting member 239 from scratching the folding screen 10 and generating abnormal noise.

The material of the elastic support member 239 includes but not limited to steel, titanium alloy and other metals, and composite materials containing fiber materials such as glass fiber, carbon fiber and aramid fiber. In some embodiments, the elastic supporting member 239 is a metal sheet or a carbon fiber sheet. Wherein, the steel is an iron-carbon alloy with a carbon content of 0.02% to 2.11% by mass. The structural strength of these materials is better, and while ensuring the supporting strength of the elastic support 239 , it is beneficial to reduce the thickness of the elastic support 239 , so as to facilitate the thinning of the folding screen device 100 . Meanwhile, these materials are elastic-plastic materials. When the elastic support member 239 is sheet-shaped, the elastic support member 239 has elasticity, and the elastic support member 239 can be bent together with the folding screen 10 .

In some embodiments, the thickness of the elastic supporting member 239 may be greater than or equal to 0.02 millimeters (mm) and less than or equal to 0.10 mm. Specifically, the thickness of the elastic support member 239 may be 0.02mm, 0.03mm, 0.04mm, 0.05mm, 0.06mm, 0.07mm, 0.08mm, 0.09mm or 0.1mm. In this way, the thickness of the elastic support member 239 is moderate, while ensuring the structural strength of the elastic support member 239, it can also take into account the thickness of the rotating shaft mechanism 23 in the Z-axis direction, which is beneficial to realize the folding screen device 100 in the unfolded state or folded state. Thin design.

Please refer back to FIG. 12 , along the extension direction of the rotation axis (first axis) of the first swing arm 232 and the base 231, the two ends of the elastic support member 239 are respectively flush with the two ends of the first support member 238, and the elastic support Two ends of the piece 239 are flush with two ends of the second supporting piece 240 respectively. Along the direction perpendicular to the rotation axis (first axis) of the first swing arm 232 and the base 231, one end of the elastic support 239 is flush with the end of the first support 238 away from the base 231, and the end of the elastic support 239 The other end is flush with the end of the second supporting member 240 away from the base 231 . In this way, the supporting surface of the elastic support member 239 can be made as large as possible, so that when the rotating shaft mechanism 23 is in the unfolded state, the supporting surface of the rotating shaft mechanism 23 has better flatness, ensuring the support device 20 to the folding screen 10. The support performance, in addition, facilitates fixing the elastic support member 239 on the first support member 238 and the second support member 240 . In some other embodiments, when the rotating shaft mechanism 23 is in the unfolded state, the elastic support member 239 may not completely cover the first support member 238 and the second support member 240, and the elastic support member 239 covers the first support member 238 and the second support member. The space between the pieces 240 is sufficient.

Please refer to FIG. 13 and FIG. 14 , the rotating shaft mechanism 23 further includes a synchronization mechanism 247 , and the synchronization mechanism 247 includes a first gear 2471 , a second gear 2472 and N transmission gears 2473 . The first gear 2471 is fixed on the first swing arm 232 , and the central axis of the first gear 2471 is collinear with the first axis. Specifically, the first gear 2471 is fixed on the third rotating shaft 241 , that is, the first gear 2471 is indirectly fixed on the first swing arm 232 through the third rotating shaft 241 . The second gear 2472 is fixed on the fourth swing arm 235 , and the central axis of the second gear 2472 is collinear with the fourth axis. Specifically, the second gear 2472 is fixed on the fourth shaft 242 , that is, the second gear 2472 is indirectly fixed on the fourth swing arm 235 through the fourth shaft 242 . The N transmission gears 2473 are disposed on the base 231 and can rotate relative to the base 231 . N transmission gears 2473 are located between the first gear 2471 and the second gear 2472; N transmission gears 2473 are arranged in sequence along the direction from the first gear 2471 to the second gear 2472; the first gear 2471, the N transmission gears 2473 and the second gear Every adjacent two of the two gears 2472 are meshed. N is greater than or equal to 2, and N is an even number. For example, N can be 2 or 4 or 6 or 8, etc.

In this way, one of the first swing arm 232 and the fourth swing arm 235 rotates relative to the base 231 so that when the shaft mechanism 23 moves from the unfolded state to the folded state, the synchronization mechanism 247 can be used to drive The other rotates synchronously with respect to the base 231 . Similarly, one of the first swing arm 232 and the fourth swing arm 235 rotates relative to the base 231 so that when the shaft mechanism 23 moves from the folded state to the unfolded state, the synchronous mechanism 247 can be used to drive The other rotates synchronously with respect to the base 231 . Therefore, through the synchronization mechanism 247 , the first swing arm 232 and the fourth swing arm 235 can rotate at the same angle synchronously, so as to reduce the difficulty of folding and unfolding the folding screen device 100 .

Please refer to Figure 24 and Figure 25, Figure 24 is a perspective view of the partial structure of the rotating shaft mechanism 23 provided by some other embodiments of the present application, Figure 25 is a partial structure of the rotating shaft mechanism 23 shown in Figure 24 and the first support 238 and the second Assembly schematic diagram of the support 240 . The difference between the embodiment shown in FIG. 24 and FIG. 25 and the embodiment shown in FIG. 12 is that: the end of the second support member 240 away from the base 231 is directly rotatably connected to the third swing arm 234 . In the embodiment shown in Fig. 24 and Fig. 25, the first swing arm 232 and the third swing arm 234 are symmetrically arranged on opposite sides of the base 231, and the second swing arm 233 and the fourth swing arm 235 are symmetrically arranged on the base 231. On the opposite sides of the seat 231, the first connecting member 236 and the second connecting member 237 are arranged symmetrically on opposite sides of the base 231, and the first support member 238 and the second supporting member 240 are arranged symmetrically on both sides of the base 231 , that is, the rotating shaft mechanism 23 is a symmetrical structure. The connection structure between the base 231, the third swing arm 234, the fourth swing arm 235, the second connecting member 237, and the second support member 240, and the base 231, the first swing arm 232, the second swing arm 233, The connection structures between the first connecting member 236 and the first supporting member 238 are the same, and will not be repeated here.

In this way, please refer to FIG. 26 and FIG. 27. FIG. 26 is a schematic diagram of the partial structure of the rotating shaft mechanism 23 shown in FIG. 25 and the assembly structure of the elastic support member 239 in a folded state. FIG. Schematic diagram of assembly with the folding screen 10. Since the end of the first support member 238 away from the base 231 is rotatably connected to the first swing arm 232, the first swing arm 232 is rotatably connected to the base 231, and the end of the second support member 240 away from the base 231 It is rotatably connected to the third swing arm 234, and the third swing arm 234 is rotatably connected to the base 231, so that the first swing arm 232 and the third swing arm 234 rotate relative to the base 231 so that the rotating shaft mechanism 23 is unfolded. When the state moves to the folded state, the distance between the end of the first support member 238 away from the base 231 and the rotation axis (first axis) of the first swing arm 232 and the base 231 remains constant, and the second support member 240 The distance between the end of the folding screen 10 away from the base 231 and the third swing arm 234 and the rotation axis (third axis) of the base 231 remains constant. , the first supporting member 238 can slide relative to the folding screen 10 toward the direction close to the base 231 , and the second supporting member 240 can slide relative to the folding screen 10 toward the direction approaching the base 231 .

Therefore, the two ends of the elastic support 239 can be respectively fixed on the first support 238 and the second support 240 without the elastic support 239 having a split structure, thereby providing a continuous and complete support surface for the folding screen 10 , The supporting performance of the supporting device 20 on the folding screen 10 is improved, thereby improving the impact resistance of the folding screen 10 . In addition, since the two ends of the elastic supporting member 239 are respectively fixed to the first supporting member 238 and the second supporting member 240 , it is possible to prevent the ends of the elastic supporting member 239 from scratching the folding screen 10 and generating abnormal noise.

In some other embodiments, the elastic support 239 can also be a split structure, a part of the elastic support 239 (ie the first support part) is stacked on the front side of the first support 238 and the base 231, and the other part ( That is, the second supporting part) is stacked on the front side of the second supporting member 240 and the base 231 . The two ends of a part of the elastic support 239 are respectively fixed on the first support 238 and the base 231, and the two ends of the other part are respectively fixed on the second support 240 and the base 231, and the two parts of the elastic support 239 face each other. fit the surface. In this way, the impact resistance of the folding screen 10 can also be improved, and the end of the elastic support member 239 can be prevented from scratching the folding screen 10 or the base 231 to cause abnormal noise.

In the description of this specification, specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in an appropriate manner.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, rather than limiting them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: it can still Modifications are made to the technical solutions described in the foregoing embodiments, or equivalent replacements are made to some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present application.

Claims (16)

1. A spindle mechanism, comprising:

a base;

the first swing arm is rotatably connected to the base and can rotate relative to the base so as to enable the rotating shaft mechanism to move between an unfolding state and a folding state;

a first support located on a front side of the first swing arm; one end of the first supporting piece far away from the base is rotatably connected to the first swing arm;

And the elastic support comprises a first support part, the first support part is arranged on the front sides of the first support and the base in a stacking way, and the first support part is fixed on the first support.

2. The spindle mechanism according to claim 1, wherein,

the rotation axes of the first swing arm and the base are first axes;

the rotating shaft mechanism further comprises a second swing arm, the second swing arm is rotatably connected to the base, the rotation axes of the second swing arm and the base are second axes, and the second axes are parallel to the first axes; the second swing arm is in sliding connection with the first support piece along a direction perpendicular to the first axis.

3. The spindle mechanism according to claim 2, wherein,

when the first swing arm rotates relative to the base so that the rotating shaft mechanism moves from the unfolding state to the folding state, the second swing arm drives one end, close to the base, of the first support piece to incline towards the back side of the first swing arm relative to one end, far away from the base, of the first support piece, and the elastic support piece bends.

4. The spindle mechanism of claim 2, further comprising:

a first link rotatably connected to one of the second swing arm and the first swing arm and slidably connected to the other of the second swing arm and the first swing arm;

when the first swing arm rotates relative to the base to enable the rotating shaft mechanism to move from the unfolding state to the folding state, the end part of the first connecting piece, which is far away from the base, moves in the direction perpendicular to the first axis to the direction far away from the base, and when the first swing arm rotates relative to the base to enable the rotating shaft mechanism to move from the folding state to the unfolding state, the end part of the first connecting piece, which is far away from the base, moves in the direction perpendicular to the first axis to the direction close to the base.

5. The spindle mechanism as recited in claim 4, wherein,

the rotating shaft mechanism further comprises a first rotating shaft, the first rotating shaft is arranged on one of the second swing arm and the first connecting piece, the other of the second swing arm and the first connecting piece is provided with a first mounting hole, and the first rotating shaft penetrates through the first mounting hole.

6. The spindle mechanism as recited in claim 5, wherein,

the first supporting piece is provided with a first sliding groove;

a part of the first rotating shaft is slidably arranged in the first sliding groove.

7. The spindle mechanism according to any one of claims 1-6, further comprising:

the third swing arm and the first swing arm are respectively arranged on two opposite sides of the base, and the third swing arm is rotatably connected to the base; the third swing arm can rotate relative to the base to enable the rotating shaft mechanism to move between an unfolding state and a folding state;

the second support piece is positioned at the front side of the third swing arm, and one end, far away from the base, of the second support piece is rotatably connected to the third swing arm; the elastic support further comprises a second support portion which is arranged on the front side of the second support in a stacked mode and is fixed to the second support.

8. The spindle mechanism according to any one of claims 1-6, further comprising:

the third swing arm and the first swing arm are respectively arranged on two opposite sides of the base, and the third swing arm is rotatably connected to the base; the third swing arm can rotate relative to the base to enable the rotating shaft mechanism to move between an unfolding state and a folding state;

The second connecting piece is rotatably connected to the third swing arm;

the second supporting piece is positioned at the front side of the third swing arm, and one end, far away from the base, of the second supporting piece is rotatably connected to the second connecting piece; the elastic support further comprises a second support portion which is arranged on the front side of the second support in a stacked mode and is fixed to the second support.

9. The spindle mechanism according to claim 8, wherein,

the rotation axes of the third swing arm and the base are a third axis;

the rotating shaft mechanism further comprises a fourth swing arm, and the fourth swing arm is rotatably connected to the base; the rotation axes of the fourth swing arm and the base are a fourth axis, and the fourth axis is parallel to the third axis; the fourth swing arm or the third swing arm is in sliding connection with the second support member along a direction perpendicular to a fourth axis.

10. The spindle mechanism according to claim 9, wherein,

when the third swing arm rotates relative to the base so that the rotating shaft mechanism moves from the unfolding state to the folding state, the fourth swing arm or the third swing arm drives one end, close to the base, of the second support to incline towards the back side of the third swing arm relative to one end, far away from the base, of the second support.

11. The spindle mechanism according to claim 9, wherein,

the fourth swing arm is also in sliding connection with the second connecting piece;

when the third swing arm rotates relative to the base to enable the rotating shaft mechanism to move from the unfolding state to the folding state, the end part of the second connecting piece away from the base moves in a direction perpendicular to the third axis to a direction away from the base, and when the third swing arm rotates relative to the base to enable the rotating shaft mechanism to move from the folding state to the unfolding state, the end part of the second connecting piece away from the base moves in a direction perpendicular to the third axis to a direction close to the base.

12. The spindle mechanism according to claim 11, wherein,

the second connecting piece is provided with a second chute;

the fourth swing arm is provided with a first sliding part which is connected in the second chute in a sliding way;

the second supporting piece is provided with a third sliding groove;

the rotating shaft mechanism further comprises a second rotating shaft, the second rotating shaft is arranged on the first sliding part, and a part of the second rotating shaft is slidably arranged in the third sliding groove.

13. The spindle mechanism according to any one of claims 1 to 6, wherein,

the elastic support piece is a metal sheet or a carbon fiber sheet.

14. The spindle mechanism according to any one of claims 1 to 6, wherein,

and two ends of the elastic support piece are respectively flush with two ends of the first support piece along the extending direction of the rotation axis of the first swing arm and the base.

15. A support device, comprising:

a first housing;

a spindle mechanism according to any one of claims 1 to 14, wherein the first swing arm is connected to the first housing.

16. A folding screen apparatus, comprising:

a folding screen comprising a first portion and a second portion connected to each other;

the support device, wherein the support device is as claimed in claim 15, the first part is fixed on the first shell, and the second part is supported on the rotating shaft mechanism.