Rotating mechanism, folding electronic equipment and supporting plate

Abstract

The embodiment of the invention relates to the technical field of foldable electronic products, in particular to a rotating mechanism, foldable electronic equipment and a supporting plate. The rotating mechanism comprises a main shaft assembly, a first supporting plate and a second supporting plate. When the rotating mechanism is in the folded state, the first supporting plate, the third supporting plate and the second supporting plate are located on the same side of the shell, the thickness of the third supporting plate is the first thickness, and the distance between the supporting face of the third supporting plate and the shell is the first distance. When the rotating mechanism is in the unfolded state, the first supporting plate, the third supporting plate and the second supporting plate are sequentially arranged in the second direction, the thickness of the third supporting plate is a second thickness, the distance between the supporting face of the third supporting plate and the shell is a second distance, the second thickness is larger than the first thickness, and the second distance is larger than the first distance. Therefore, the distance between the supporting surface of the third supporting plate and the flexible screen is reduced, the supporting effect of the third supporting plate on the flexible screen is improved, and the crease of the flexible screen is improved.

Description

Technical Field

[0001] Embodiments of the present application relate to the technical field of foldable electronic products, and in particular, to a rotating mechanism, a folding electronic device, and a support plate. Background Art

[0002] With the continuous development of display technology, foldable display terminals have gradually become a development trend of future mobile electronic products. When the folding electronic device is in the unfolded state, a larger display area can be obtained, improving the viewing effect. When the folding electronic device is in the folded state, a smaller volume can be obtained, which is convenient for users to carry.

[0003] Among them, the folding electronic device at least includes: a flexible screen and a housing device, and the housing device includes two structural members for carrying the flexible screen and a rotating mechanism. The two structural members are connected to both sides of the rotating mechanism. During actual use, the rotating mechanism drives the two structural members to rotate, so that the folding electronic device folds or unfolds. In traditional in-fold electronic devices with a screen, when the electronic device folds, the flexible screen folds inside the housing device, and creases are likely to appear in the bent part of the flexible screen, affecting the display effect. Summary of the Invention

[0004] Embodiments of the present application provide a rotating mechanism, a folding electronic device, and a support plate, which are used to improve the problem of poor display effect of the flexible screen.

[0005] To achieve the above object, embodiments of the present application provide the following solutions:

[0006] On the one hand, a rotating mechanism is provided, including: a main shaft assembly, a first support plate, and a second support plate. The main shaft assembly includes a third support plate and a housing. When the rotating mechanism is in the folded state, the first support plate, the third support plate, and the second support plate are located on the same side of the housing. The first support plate, the third support plate, and the second support plate together form a receiving space. The thickness of the third support plate is a first thickness. Along a first direction, the distance between the support surface of the third support plate and the housing is a first distance. The thickness of the third support plate is the dimension of the third support plate in the first direction. Among them, along the first direction, at least part of the third support plate and the housing are stacked. When the rotating mechanism is in the unfolded state, the first support plate, the third support plate, and the second support plate are arranged in sequence along a second direction. The first support plate, the third support plate, and the second support plate form a support plane perpendicular to the first direction. The thickness of the third support plate is a second thickness. Along the first direction, the distance between the support surface of the third support plate and the housing is a second distance. Among them, the second thickness is greater than the first thickness, and the second distance is greater than the first distance. During the conversion process of the rotating mechanism between the unfolded state and the folded state, the first support plate rotates relative to the third support plate, and the second support plate rotates relative to the third support plate.

[0007] Here, the "support plane" can be understood as a horizontal plane or an approximately horizontal plane. Among them, the horizontal plane can be a horizontal surface parallel to the second direction, and the approximately horizontal plane can be a slightly undulating surface parallel to the second direction, and the acceptable deviation range of the approximately horizontal plane can be, for example, a deviation within 5%. Through the above settings, when the rotating mechanism is in the folded state, along the first direction, the distance between the support surface of the third support plate and the housing increases, so that the distance between the support surface of the third support plate and the flexible screen decreases, which is beneficial to improving the support effect of the third support plate on the flexible screen and beneficial to improving the crease of the flexible screen. At the same time, when the rotating mechanism is in the folded state, along the first direction, the distance between the support surface of the third support plate and the housing decreases, so that the distance between the support surface of the third support plate and the flexible screen increases, which is beneficial to further increasing the accommodation space surrounded by the first support plate, the third support plate and the second support plate, thereby further improving the reliability of the flexible screen.

[0008] In some implementation manners, the rotating mechanism includes a first rotating component and a second rotating component, and the first rotating component and the second rotating component are respectively rotatably connected to the main shaft component. When the rotating mechanism is in the unfolded state, the third support plate is disposed between the first rotating component and the second rotating component under extrusion. During the process of the rotating mechanism converting from the folded state to the unfolded state, in response to the extrusion of the first rotating component and the second rotating component on the third support plate, the thickness of the third support plate increases. During the process of the rotating mechanism converting from the unfolded state to the folded state, the thickness of the third support plate decreases.

[0009] Through the above settings, during the process of the rotating mechanism converting from the folded state to the unfolded state, in response to the extrusion of the first rotating component and the second rotating component on the third support plate, along the first direction, the distance between the support surface of the third support plate and the housing increases, so that the distance between the support surface of the third support plate and the flexible screen decreases, which is beneficial to improving the support effect of the third support plate on the flexible screen and beneficial to improving the crease of the flexible screen. At the same time, during the process of the rotating mechanism converting from the unfolded state to the folded state, along the first direction, the distance between the support surface of the third support plate and the housing decreases, so that the distance between the support surface of the third support plate and the flexible screen increases, which is beneficial to further increasing the accommodation space, thereby further improving the reliability of the flexible screen.

[0010] In some implementation manners, the first rotating component includes a first support plate, and the second rotating component includes a second support plate. When the rotating mechanism is in the unfolded state, the third support plate is disposed between the first support plate and the second support plate under extrusion. During the process of the rotating mechanism converting from the folded state to the unfolded state, in response to the extrusion of the first support plate and the second support plate on the third support plate, the thickness of the third support plate increases. During the process of the rotating mechanism converting from the unfolded state to the folded state, the thickness of the third support plate decreases.

[0011] With the above settings, during the process of the rotating mechanism converting from the folded state to the unfolded state, the extrusion force exerted by the first support plate and the second support plate on the third support plate increases, so as to increase the thickness of the third support plate; during the process of the rotating mechanism converting from the unfolded state to the folded state, the extrusion force exerted by the first support plate and the second support plate on the third support plate decreases, so as to decrease the thickness of the third support plate.

[0012] In some implementation manners, the third support plate includes an elastic member. During the process of the rotating mechanism converting from the folded state to the unfolded state, the dimension of the elastic member in the first direction increases; during the process of the rotating mechanism converting from the unfolded state to the folded state, the dimension of the elastic member in the first direction decreases.

[0013] With the above settings, during the process of the rotating mechanism converting from the folded state to the unfolded state, the extrusion force acting on the third support plate increases, and the elastic member undergoes elastic deformation under the action of the extrusion force, and the dimension of the elastic member in the first direction increases, so as to increase the thickness of the third support plate. During the process of the rotating mechanism converting from the unfolded state to the folded state, the extrusion force acting on the third support plate decreases, and the elastic member undergoes deformation under the action of the elastic restoring force, and the dimension of the elastic member in the first direction decreases, making the thickness of the third support plate decrease.

[0014] In some implementation manners, the elastic member includes a hollow structure. During the process of the rotating mechanism converting from the folded state to the unfolded state, the dimension of the hollow structure in the first direction increases; during the process of the rotating mechanism converting from the unfolded state to the folded state, the dimension of the hollow structure in the first direction decreases.

[0015] With the above settings, during the process of the rotating mechanism converting from the folded state to the unfolded state, the extrusion force acting on the third support plate increases, and the hollow structure undergoes elastic deformation under the action of the extrusion force, and the dimension of the hollow structure in the first direction increases, so as to increase the thickness of the third support plate. During the process of the rotating mechanism converting from the unfolded state to the folded state, the extrusion force acting on the third support plate decreases, and the hollow structure undergoes deformation under the action of the elastic restoring force, and the dimension of the hollow structure in the first direction decreases, making the thickness of the third support plate decrease.

[0016] In some implementation manners, the hollow structure includes a closed cavity, and there is fluid in the cavity; during the process of the rotating mechanism converting from the folded state to the unfolded state, the dimension of the cavity in the first direction increases; during the process of the rotating mechanism converting from the unfolded state to the folded state, the dimension of the cavity in the first direction decreases.

[0017] With the above settings, during the process of the rotating mechanism converting from the folded state to the unfolded state, the extrusion force acting on the third support plate increases. Under the action of the extrusion force, the cavity undergoes elastic deformation, and the dimension of the cavity in the first direction increases, so that the thickness of the third support plate increases. During the process of the rotating mechanism converting from the unfolded state to the folded state, the extrusion force acting on the third support plate decreases. Under the action of the elastic restoring force, the cavity deforms, and the dimension of the cavity in the first direction decreases, causing the thickness of the third support plate to decrease. Further, by providing a fluid in the cavity, it is also beneficial to enhance the support effect on the flexible screen.

[0018] In some implementation manners, the material of the fluid includes inert materials. With the above settings, it is possible to avoid the reaction between the leaked fluid and other structures in the electronic device, which is beneficial to improving the reliability of the electronic device.

[0019] In some implementation manners, the inert material includes at least one of fluorinated liquid or inert gas. With the above settings, it is beneficial to further improve the reliability of the electronic device.

[0020] In some implementation manners, the hollow structure is a tube body, the tube body has a cavity, and the tube body is strip-shaped. With the above settings, the fluid can be located inside the tube body. Under the action of the extrusion force, the tube wall of the tube body deforms, so that the dimension of the tube body in the first direction increases; under the action of the elastic restoring force, the tube wall of the tube body deforms, so that the dimension of the tube body in the first direction decreases.

[0021] In some implementation manners, the extending direction of the length of the tube body is parallel to the second direction. With the above settings, the first support plate and the second support plate respectively squeeze both sides of the third support plate in the second direction, that is, the extending direction of the length of the tube body is squeezed, which is beneficial to increasing the deformation amount of the tube body, and further increasing the deformation amount of the thickness of the third support plate. At the same time, due to the increase in the deformation amount of the thickness of the third support plate, when the rotating mechanism is in the unfolded state, the distance between the support surface of the third support plate and the flexible screen is further reduced, which is beneficial to further improving the support effect of the third support plate on the flexible screen and is beneficial to further improving the crease of the flexible screen.

[0022] In some implementations, the number of tubes is multiple, and in the first direction, the multiple tubes are stacked. With the above arrangement, the first support plate and the second support plate respectively squeeze both sides of the third support plate in the second direction, that is, the extending direction of the length of the tube is squeezed, and each tube arranged in the first direction is deformed, thereby increasing the deformation amount of the thickness of the third support plate. At the same time, since the deformation amount of the thickness of the third support plate increases, when the rotating mechanism is in the unfolded state, the distance between the support surface of the third support plate and the flexible screen is further reduced, which is beneficial to further improving the support effect of the third support plate on the flexible screen and is beneficial to further improving the crease of the flexible screen.

[0023] In some implementations, the elastic member further includes a first adhesive layer, and the first adhesive layer is connected between two tubes stacked in the first direction. With the above arrangement, it is beneficial to improve the connection reliability between the two tubes stacked in the first direction, and further improve the reliability of the elastic member.

[0024] In some implementations, the elastic member further includes a connecting portion, and in the direction parallel to the support surface of the third support plate, the connecting portion is connected between two adjacent tubes. With the above arrangement, so that in the direction parallel to the support surface of the third support plate, the multiple tubes and the multiple connecting portions are connected together, which is beneficial to improving the connection reliability between the tubes.

[0025] In some implementations, the tube and the connecting portion are integrally formed. Here, "integrally formed" can be understood as forming the connecting portion and the tube having a cavity communicating with the external environment through the same manufacturing process. With the above arrangement, it is beneficial to improve the connection reliability between the connecting portion and the tube, and further improve the reliability of the elastic member.

[0026] In some implementations, the material of the tube includes TPU (Thermoplastic Urethane), PET (Polyethylene terephthalate), or silicone rubber. Among them, the tube made of the above materials can produce a certain amount of elastic deformation when subjected to extrusion force, so that the thickness of the third support plate can be changed.

[0027] In some implementations, the third support plate includes a plurality of support members. The elastic member and the support members are stacked in the first direction. The support members include a first support member located on one side of the elastic member in the first direction, and the support members further include a second support member located on the other side of the elastic member in the first direction. During the process of the rotation mechanism transitioning from the folded state to the unfolded state, in the first direction, the distance between the first support member and the second support member increases. Through the above arrangement, it is beneficial to reduce the distance between the support surface of the third support plate and the flexible screen, beneficial to improving the support effect of the third support plate on the flexible screen, and beneficial to improving the creases of the flexible screen. During the process of the rotation mechanism transitioning from the unfolded state to the folded state, in the first direction, the distance between the first support member and the second support member decreases. Through the above arrangement, the distance between the support surface of the third support plate and the flexible screen increases, which is beneficial to further increasing the accommodation space, thereby further improving the reliability of the flexible screen.

[0028] In some implementations, when the rotation mechanism is in the unfolded state, in the second direction, the support plate and / or the second support plate do not overlap with the support members, and at least a part of the first support plate and / or the second support plate overlaps with the elastic member. Through the above arrangement, it is beneficial for the first support plate and the second support plate to squeeze one side of the elastic member in the second direction, beneficial to increasing the extrusion force received by the elastic member, and further beneficial to increasing the deformation amount of the elastic member in the first direction.

[0029] In some implementations, the elastic member extends beyond the support member in the second direction. Through the above arrangement, it is beneficial for the first support plate and the second support plate to squeeze one side of the elastic member in the second direction, beneficial to increasing the extrusion force received by the elastic member, and further beneficial to increasing the deformation amount of the elastic member in the first direction.

[0030] In some implementations, the material of the support member includes at least one of carbon fiber, PI (Polyimide) fiber, Peek (Poly ether ether ketone) fiber, or hybrid fiber. Through the above arrangement, deformation of the support member is avoided, which is beneficial to ensuring the support effect of the support member.

[0031] In some implementations, the support member is located on the outermost layer of the third support plate in the first direction. The support member being located on the outermost layer of the third support plate in the first direction is beneficial to ensuring the connection reliability between the third support plate and the housing. At the same time, it is also beneficial to ensuring the support effect of the third support on the flexible screen.

[0032] In some implementations, the elastic member further includes a second adhesive layer, and the second adhesive layer is connected between the tube body and the support member. Through the above arrangement, it is beneficial to improving the connection reliability between the elastic member and the support member, and further improving the reliability of the third support plate.

[0033] In some implementations, the third support plate further includes a through hole penetrating therethrough, and the orthographic projection of the through hole on the support surface of the third support plate does not overlap with the orthographic projection of the tube body on the support surface of the third support plate. Through the above arrangement, it is avoided that the fluid in the tube body leaks from the through hole, which is beneficial to improving the reliability of the third support plate.

[0034] On the other hand, a folding electronic device is also provided, including a flexible screen, a first structural member, a second structural member, and a rotating mechanism in any of the above embodiments; the first structural member and the second structural member are connected to both sides of the rotating mechanism, the flexible screen is located on the same side of the first structural member and the second structural member, and the flexible screen is respectively connected to the first structural member and the second structural member. The folding electronic device provided by the embodiments of the present application includes the rotating mechanism as described above, and thus has all the above beneficial effects, which will not be elaborated herein.

[0035] On the other hand, a support plate is also provided, which includes a first support member, an elastic member, and a second support member that are sequentially stacked along a first direction. The elastic member includes a plurality of tube bodies, and the tube bodies have fluid therein. In response to the extrusion force acting on the support plate and perpendicular to the first direction, the size of the support plate in the first direction increases; in response to the elastic restoring force of the elastic member, the size of the support plate in the first direction decreases.

[0036] In the actual use process, the support plate can be installed on the housing, and the surface of the support plate away from the housing is a support surface for supporting the flexible screen. When the size of the support plate in the first direction increases, the distance between the support surface of the support plate and the flexible screen decreases, which is beneficial to improving the support effect of the support plate on the flexible screen and beneficial to improving the crease of the flexible screen. When the size of the support plate in the first direction decreases, the distance between the support surface of the support plate and the housing decreases, so that the distance between the support surface of the support plate and the flexible screen increases, thereby further improving the reliability of the flexible screen. Description of the Drawings

[0037] Figure 1 It is a structural diagram of a folding electronic device provided by an embodiment of the present application;

[0038] Figure 2 It is a structural diagram of a folding electronic device provided by an embodiment of the present application in a folded state;

[0039] Figure 3 It is a structural diagram of a folding electronic device provided by an embodiment of the present application in an unfolded state;

[0040] Figure 4 It is a structural diagram of a rotating mechanism provided by an embodiment of the present application in a folded state;

[0041] Figure 5Structural diagram of a rotating mechanism provided by an embodiment of the present application in an unfolded state;

[0042] Figure 6 For Figure 5 Partial enlarged structural diagram of the rotating mechanism in at S;

[0043] Figure 7 Structural diagram of a third support plate provided by an embodiment of the present application;

[0044] Figure 8a For a Figure 7 Cross-sectional view of the third support plate in along the A-A section line in the folded state;

[0045] Figure 8b For a Figure 7 Cross-sectional view of the third support plate in along the A-A section line in the unfolded state;

[0046] Figure 9 For a Figure 7 Cross-sectional view of the third support plate in along the B-B section line;

[0047] Figure 10a For another Figure 7 Cross-sectional view of the third support plate in along the A-A section line in the folded state;

[0048] Figure 10b For another Figure 7 Cross-sectional view of the third support plate in along the A-A section line in the unfolded state;

[0049] Figure 11 For another Figure 7 Cross-sectional view of the third support plate in along the B-B section line;

[0050] Figure 12 For another Figure 7 Cross-sectional view of the third support plate in along the A-A section line;

[0051] Figure 13 For another Figure 7 Cross-sectional view of the third support plate in along the B-B section line;

[0052] Figure 14a For another Figure 7 Cross-sectional view of the third support plate in along the A-A section line in the folded state;

[0053] Figure 14b For another Figure 7 Cross-sectional view of the third support plate in along the A-A section line in the unfolded state;

[0054] Figure 15 For anotherFigure 7 Cross-sectional view of the third support plate in [reference] along the section line B-B;

[0055] Figure 16 For another Figure 7 Cross-sectional view of the third support plate in [reference] along the section line A-A;

[0056] Figure 17 For another Figure 7 Cross-sectional view of the third support plate in [reference] along the section line B-B;

[0057] Figure 18 For a Figure 7 Cross-sectional view of the third support plate in [reference] along the section line C-C;

[0058] Figure 19 For a Figure 7 Cross-sectional view of the third support plate in [reference] along the section line D-D;

[0059] Figure 20 Cross-sectional view of a first support plate, a second support plate, and a third support plate in an unfolded state provided by an embodiment of the present application;

[0060] Figure 21 Another cross-sectional view of a first support plate, a second support plate, and a third support plate in an unfolded state provided by an embodiment of the present application. Detailed implementation manners

[0061] Next, the technical solutions in the embodiments of the present application will be described with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments.

[0062] Hereinafter, terms such as "first" and "second" are only for convenience of description, and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present application, unless otherwise specified, the meaning of "a plurality" is two or more.

[0063] In the embodiments of the present application, words such as "exemplary" or "for example" are used to represent examples, illustrations, or explanations. Any embodiment or design solution described as "exemplary" or "for example" in the embodiments of the present application should not be construed as being more preferred or having more advantages than other embodiments or design solutions. Rather, the use of words such as "exemplary" or "for example" is intended to present related concepts in a specific manner.

[0064] In the embodiments of the present application, directional indications such as up, down, left, right, front, and back for explaining the structures and movements of different components in the present application are relative. When the components are in the positions shown in the figures, these indications are appropriate. However, if the description of the positions of the components changes, then these directional indications will also change accordingly.

[0065] The embodiments of the present application provide a foldable electronic device. Among them, the foldable electronic device can be a terminal product such as a mobile phone, a tablet computer (pad), a television, a smart wearable product (for example, a smart watch, a smart bracelet), a virtual reality (VR) device, an augmented reality (AR) device, etc.

[0066] To facilitate the understanding of the foldable electronic device 1 provided in the embodiments of the present application. Figure 1 It is a structural diagram of a foldable electronic device 1 provided in the embodiments of the present application. Figure 2 It is a structural diagram of a foldable electronic device 1 provided in the embodiments of the present application in a folded state. Figure 3 It is a structural diagram of a foldable electronic device 1 provided in the embodiments of the present application in an unfolded state. The following will be combined with Figure 1 , Figure 2 and Figure 3 , and a foldable electronic device 1 will be introduced as follows:

[0067] The foldable electronic device 1 includes a flexible screen 30. The flexible screen 30 can be an active matrix organic light emitting diode (AMOLED) display screen.

[0068] As a self-emitting display screen, the AMOLED display screen does not need to be provided with a backlight module (BLM). Therefore, when the substrate of the AMOLED display screen is made of a flexible resin material, such as polyethylene terephthalate (PET), the AMOLED display screen can have the characteristic of being bendable.

[0069] In addition, the folding electronic device 1 further includes a rotating mechanism 10 for carrying the flexible screen 30, a first structural member 21, and a second structural member 22. The rotating mechanism 10 is connected between the first structural member 21 and the second structural member 22. The first structural member 21 and the second structural member 22 are used to carry the flexible screen 30, so that the flexible screen 30 remains as flat as possible during use and protects the non-display surface of the flexible screen 30. The first structural member 21 and the second structural member 22 can rotate relative to the rotating mechanism 10 respectively. In the embodiments of the present application, only some structures of the first structural member 21 and the second structural member 22 are briefly described by way of example, and are also simplified and schematically shown in the drawings. The embodiments of the present application do not strictly limit the specific structures of the first structural member 21 and the second structural member 22.

[0070] Wherein, the first structural member 21 and the second structural member 22 may respectively include a middle frame structure for installing and fixing other components of the folding electronic device 1. For example, a camera, an earphone, a receiver, a button, a battery, etc. The embodiments of the present application do not limit other electronic components provided on the first structural member 21 and the second structural member 22. The first structural member 21 and the second structural member 22 may also respectively include a decorative cover plate for protecting the devices inside the middle frame structure and for presenting part of the appearance of the folding electronic device 1.

[0071] Exemplarily, a part of the flexible screen 30 may be bonded to the first structural member 21, a part may be bonded to the second structural member 22, and a part may be bonded to the rotating mechanism 10.

[0072] Figure 4 It is a structural diagram of a rotating mechanism 10 in a folded state provided by an embodiment of the present application; Figure 5 It is a structure of a rotating mechanism 10 in an unfolded state provided by an embodiment of the present application. Among them, in combination with Figure 1 、 Figure 4 and Figure 6 As shown, the rotating mechanism 10 may include a main shaft assembly 100, a first rotating assembly 200, and a second rotating assembly 300. The first rotating assembly 200 and the second rotating assembly 300 may be respectively rotatably connected to the main shaft assembly 100. Exemplarily, one end of the first rotating assembly 200 is rotatably connected to the main shaft assembly 100, and the other end of the first rotating assembly 200 is connected to the first structural member 21; one end of the second rotating assembly 300 is rotatably connected to the main shaft assembly 100, and the other end of the second rotating assembly 300 is connected to the second structural member 22. Through the above settings, the first structural member 21 can drive the first rotating assembly 200 to rotate relative to the main shaft assembly 100, and the second structural member 22 can drive the second rotating assembly 300 to rotate relative to the main shaft assembly 100. Through the above settings, the folding or unfolding of the folding electronic device 1 can be realized.

[0073] Such as Figure 2 andFigure 4 As shown, when the first structural member 21 and the second structural member 22 are in the folded state, the included angle α between the first structural member 21 and the second structural member 22 can be approximately 0° (it can be understood that there is also a slight deviation allowed for the included angle α between the first structural member 21 and the second structural member 22. For example, the included angle α can be 1°, 3°, or 5°). At this time, the first rotating assembly 200 and the second rotating assembly 300 are in the folded state, and the flexible screen 30 is also in the folded state, that is, the rotating mechanism 10 is in the folded state. In some embodiments, when the first structural member 21 and the second structural member 22 are in the folded state, the first structural member 21 and the second structural member 22 can be in contact with each other to achieve positioning. In some other embodiments, when the first structural member 21 and the second structural member 22 are in the folded state, the first structural member 21 and the second structural member 22 can also be close to each other, and there is a small gap between them. The embodiments of the present application do not specifically limit this.

[0074] As Figure 3 and Figure 6 shown, when the first structural member 21 and the second structural member 22 are in the unfolded state, the included angle α between the first structural member 21 and the second structural member 22 can be approximately 180° (it can be understood that there is also a slight deviation allowed for the included angle α between the first structural member 21 and the second structural member 22. For example, the included angle α can be 165°, 177°, or 185°). At this time, the first rotating assembly 200 and the second rotating assembly 300 are in the unfolded state, and the flexible screen 30 is also in the unfolded state, that is, the rotating mechanism 10 is in the unfolded state.

[0075] In some embodiments, the first rotating assembly 200 may include a first support plate 210, and the second rotating assembly 300 may include a second support plate 310. The main shaft assembly 100 may include a housing 120 and a third support plate 110, and at least part of the third support plate 110 and the housing 120 are stacked. Here, "at least part of the housing 120" can be understood as that all of the housing 120 can be stacked with the third support plate 110, or part of the housing 120 is stacked with the third support plate 110. During the conversion process of the rotating mechanism 10 between the unfolded state and the folded state, the first support plate 210 rotates relative to the third support plate 110, and the second support plate 310 rotates relative to the third support plate 110.

[0076] Exemplarily, continuing to refer to Figure 4 , the third support plate 110 and the housing 120 can jointly enclose a first arc-shaped chute 101 and a second arc-shaped chute 102. Figure 4The dashed outline in the figure is the projected outline of the first arc-shaped chute 101 and the second arc-shaped chute 102. The first rotating assembly 200 may further include a first swing arm 220. The first swing arm 220 has a first arc-shaped slider 221. The first arc-shaped slider 221 is installed in the first arc-shaped chute 101, and the first arc-shaped slider 221 is rotatably connected to the first arc-shaped chute 101. Similarly, the second rotating assembly 300 may further include a second swing arm 320. The second swing arm 320 has a second arc-shaped slider 321. The second arc-shaped slider 321 is installed in the second arc-shaped chute 102, and the second arc-shaped slider 321 is rotatably connected to the second arc-shaped chute 102. Through the above settings, the first rotating assembly 200 and the main shaft assembly 100 are rotatably connected by a virtual axis rotation connection method, and the second rotating assembly 300 and the main shaft assembly 100 are rotatably connected by a virtual axis rotation connection method. Of course, the rotation connection method between the first rotating assembly 200 and the main shaft assembly 100, and the rotation connection method between the second rotating assembly 300 and the main shaft assembly 100 are only exemplary. Other connection methods may also be adopted for rotation connection between the first rotating assembly 200 and the main shaft assembly 100, and between the second rotating assembly 300 and the main shaft assembly 100. The embodiments of the present application do not limit this.

[0077] In addition, the first support plate 210 is also connected to the first swing arm 220, and the second support plate 310 is also connected to the second swing arm 320. In the embodiments of the present application, the connection method between the first support plate 210 and the first swing arm 220 is not specifically limited, and the connection method between the second support plate 310 and the second swing arm 320 is not specifically limited either.

[0078] For ease of description below, the direction in which at least part of the third support plate 110 and the housing 120 are stacked is defined as the first direction X.

[0079] Referring to Figure 6 , when the rotating mechanism 10 is in the unfolded state, the first support plate 210, the third support plate 110, and the second support plate 310 are arranged in sequence along the second direction Y, and the second direction Y is perpendicular to the first direction X. The first support plate 210, the third support plate 110, and the second support plate 310 form a support plane, and the support plane is perpendicular to the first direction X. Here, the "support plane" can be understood as a plane or an approximate plane. Among them, the plane can be a flat surface parallel to the second direction Y, and the approximate plane can be a slightly undulating surface parallel to the second direction Y, and the acceptable deviation range of the approximate plane can be, for example, within 5%.

[0080] In addition, in combination with Figure 3, in an embodiment where the flexible screen 30 can be bonded to the rotating mechanism 10, the support effect of the rotating mechanism 10 on the flexible screen 30 can be adjusted by adjusting the thickness of the adhesive layer between the flexible screen 30 and the rotating mechanism 10, so as to ensure that the flexible screen 30 is in an unfolded state. At this time, "forming a support plane" can also be understood as adjusting the thickness of the adhesive layer between the flexible screen 30 and the first support plate 210, between the flexible screen 30 and the third support plate 110, or between the flexible screen 30 and the second support plate 310, so that the first support plate 210, the third support plate 110, and the second support plate 310 jointly form a support plane, thereby ensuring the unfolded state of the flexible screen 30 when it is flattened.

[0081] Referring to Figure 4 , when the rotating mechanism 10 is in a folded state, the first support plate 210, the third support plate 110, and the second support plate 310 can be located on the same side of the housing 120, and the first support plate 210, the third support plate 110, and the second support plate 310 can jointly form an accommodation space M. Exemplarily, in the direction close to the main axis, the distance between the first support plate 210 and the second support plate 310 gradually increases along the second direction Y. Through the above arrangement, the accommodation space M formed by the first support plate 210, the third support plate 110, and the second support plate 310 can bend the flexible screen 30 into a water droplet shape or an approximately water droplet shape, which is beneficial to reducing the excessive extrusion of the rotating mechanism 10 on the flexible screen 30.

[0082] In some embodiments, a groove may be provided on one side of the flexible screen 30 close to the third support plate 110, and the groove may be located in the bending area of the flexible screen 30. By providing the groove, the structural strength and stiffness of the bending area of the flexible screen 30 are reduced, facilitating the bending of the flexible screen 30. However, continuing to refer to Figure 6 , after the flexible screen 30 is converted from the folded state to the unfolded state, creases are likely to appear or the creases are more obvious in the bending area of the flexible screen 30 (for example, local depressions or deformations occur), thereby affecting the display effect of the flexible screen 30.

[0083] In view of this, in the embodiments of the present application, in combination with Figure 4 and Figure 6As shown, when the rotating mechanism 10 is in the folded state, the thickness of the third support plate 110 is the first thickness D1. The thickness of the third support plate 110 is the dimension of the third support plate 110 in the first direction X. Along the first direction X, the distance between the support surface N1 of the third support plate 110 and the housing 120 is the first distance D2. When the rotating mechanism 10 is in the unfolded state, the thickness of the third support plate 110 is the second thickness D3. Along the first direction X, the distance between the support surface N1 of the third support plate 110 and the housing 120 is the second distance D4. Among them, the second thickness D3 is greater than the first thickness D1, and the second distance D4 is greater than the first distance D2. Here, the "support surface N1 of the third support plate 110" can be understood as the surface of the third support plate 110 away from the housing 120 (for example, the top surface of the third support plate 110 in Figure 4 or Figure 6 ), and the support surface N1 of the third support plate 110 is used to form a partial support plane. The "distance between the support surface N1 of the third support plate 110 and the housing 120" can be understood as the distance between the surface of the third support plate 110 away from the housing 120 (for example, the top surface of the third support plate 110 in Figure 4 or Figure 6 ) and the surface of the housing 120 away from the third support plate 110 (for example, the bottom surface of the housing 120 in Figure 4 or Figure 6 ).

[0084] In some embodiments, the third support plate 110 and the housing 120 can be threadedly connected by threaded fasteners such as bolts, so that the third support plate 110 and the housing 120 are fixedly connected. Through the above settings, along the first direction X, when the thickness of the third support plate 110 increases, the distance between the support surface N1 of the third support plate 110 and the housing 120 increases; on the contrary, along the first direction X, when the thickness of the third support plate 110 decreases, the distance between the support surface N1 of the third support plate 110 and the housing 120 decreases.

[0085] To sum up, when the rotating mechanism 10 is in the folded state, along the first direction X, the distance between the support surface N1 of the third support plate 110 and the housing 120 increases, so that the distance between the support surface N1 of the third support plate 110 and the flexible screen 30 decreases, which is beneficial to improving the support effect of the third support plate 110 on the flexible screen 30 and beneficial to improving the crease of the flexible screen 30. At the same time, when the rotating mechanism 10 is in the folded state, along the first direction X, the distance between the support surface N1 of the third support plate 110 and the housing 120 decreases, so that the distance between the support surface N1 of the third support plate 110 and the flexible screen 30 increases, which is beneficial to further increasing the accommodation space M formed by the first support plate 210, the third support plate 110 and the second support plate 310, thereby further improving the reliability of the flexible screen 30.

[0086] In some embodiments, when the rotating mechanism 10 is in the deployed state, the third support plate 110 is disposed between and pressed against the first rotating assembly 200 and the second rotating assembly 300. During the process of the rotating mechanism 10 transitioning from the folded state to the deployed state, in response to the pressing of the first rotating assembly 200 and the second rotating assembly 300 against the third support plate 110, the thickness of the third support plate 110 increases. During the process of the rotating mechanism 10 transitioning from the deployed state to the folded state, the thickness of the third support plate 110 decreases. Exemplarily, the first rotating assembly 200 and the second rotating assembly 300 can provide a pressing force F parallel to the second direction Y acting on the third support plate 110. Herein, in the embodiments of the present application, the structures that provide the pressing force within the first rotating assembly 200 and the second rotating assembly 300 are not limited. For example, the first swing arm 220 of the first rotating assembly 200 and the second swing arm 320 of the second rotating assembly 300 can press against the third support plate 110, or the first support plate 210 of the first rotating assembly 200 and the second support plate 310 of the second rotating assembly 300 can press against the third support plate 110.

[0087] Based on the above settings, the third support plate 110 can include a plurality of interconnected mechanical structures. When the third support plate 110 is subjected to the pressing force from the first rotating assembly 200 and the second rotating assembly 300, the mechanical structures within the third support plate 110 move, causing the thickness of the third support plate 110 to increase. When the third support plate 110 is not subjected to the pressing force, the mechanical structures within the third support plate 110 return to the initial state, causing the thickness of the third support plate 110 to return to the initial state. Alternatively, the third support plate 110 can also have an elastic structure. When the third support plate 110 is subjected to the pressing force from the first rotating assembly 200 and the second rotating assembly 300, the elastic structure can deform, causing the thickness of the third support plate 110 to increase. When the third support plate 110 is not subjected to the pressing force, the elastic structure returns to the initial state, causing the thickness of the third support plate 110 to return to the initial state. Here, the "initial state" refers to the state before the third support plate 110 is subjected to the pressing force F, and the thickness of the third support plate 110 in the initial state is less than the thickness when the third support plate 110 is subjected to the pressing.

[0088] With the above settings, during the process of the rotating mechanism 10 transitioning from the folded state to the unfolded state, in response to the extrusion of the third support plate 110 by the first rotating component 200 and the second rotating component 300, along the first direction X, the distance between the support surface N1 of the third support plate 110 and the housing 120 increases, so that the distance between the support surface N1 of the third support plate 110 and the flexible screen 30 decreases, which is beneficial to improving the support effect of the third support plate 110 on the flexible screen 30 and beneficial to improving the creases of the flexible screen 30. At the same time, during the process of the rotating mechanism 10 transitioning from the unfolded state to the folded state, along the first direction X, the distance between the support surface N1 of the third support plate 110 and the housing 120 decreases, so that the distance between the support surface N1 of the third support plate 110 and the flexible screen 30 increases, which is beneficial to further increasing the accommodation space M formed by the first support plate 210, the third support plate 110, and the second support plate 310, thereby further improving the reliability of the flexible screen 30.

[0089] In some embodiments, when the rotating mechanism 10 is in the unfolded state, the third support plate 110 is disposed between the first support plate 210 and the second support plate 310. During the process of the rotating mechanism 10 transitioning from the folded state to the unfolded state, in response to the extrusion of the third support plate 110 by the first support plate 210 and the second support plate 310, the thickness of the third support plate 110 increases. During the process of the rotating mechanism 10 transitioning from the unfolded state to the folded state, the thickness of the third support plate 110 decreases.

[0090] Exemplarily, when the rotating mechanism 10 is in the unfolded state, the third support plate 110 is located between the first support plate 210 and the second support plate 310, and the first support plate 210 and the second support plate 310 respectively extrude both sides of the third support plate 110 along the second direction Y, so that the first support plate 210 and the second support plate 310 apply an extrusion force F on the third support plate 110 along the second direction Y. In response to the extrusion of the third support plate 110 by the first support plate 210 and the second support plate 310, the thickness of the third support plate 110 increases.

[0091] When the rotating mechanism 10 is in the folded state, the first support plate 210 and the second support plate 310 are located on the side of the third support plate 110 away from the housing 120, and both the first support plate 210 and the second support plate 310 are not in contact with the third support plate 110, so that the first support plate 210 and the second support plate 310 do not apply an extrusion force F on the third support plate 110. Since the third support plate 110 does not receive the extrusion force F from the first support plate 210 and the second support plate 310, the thickness of the third support plate 110 does not change.

[0092] In summary, during the process of the rotating mechanism 10 transitioning from the folded state to the unfolded state, the extrusion forces exerted by the first support plate 210 and the second support plate 310 on the third support plate 110 increase, causing the thickness of the third support plate 110 to increase; during the process of the rotating mechanism 10 transitioning from the unfolded state to the folded state, the extrusion forces exerted by the first support plate 210 and the second support plate 310 on the third support plate 110 decrease, causing the thickness of the third support plate 110 to decrease.

[0093] Figure 7 Structural diagram of a third support plate provided by an embodiment of the present application; Figure 8a Is a Figure 7 Cross-sectional view of the third support plate in the folded state along the A-A section line; Figure 8b Is a Figure 7 Cross-sectional view of the third support plate in the unfolded state along the A-A section line;

[0094] Figure 9 Is a Figure 7 Cross-sectional view of the third support plate along the B-B section line. In some embodiments, referring to Figure 7 , Figure 8a , Figure 8b And Figure 9 As shown, the third support plate 110 may include an elastic member 111. During the process of the rotating mechanism 10 transitioning from the folded state to the unfolded state, the dimension of the elastic member 111 along the first direction X increases. During the process of the rotating mechanism 10 transitioning from the unfolded state to the folded state, the dimension of the elastic member 111 along the first direction X decreases. Wherein, when the dimension of the elastic member 111 along the first direction X changes, the thickness of the third support plate 110 also changes accordingly. For example, when the dimension of the elastic member 111 along the first direction X increases, the thickness of the third support plate 110 also increases; when the dimension of the elastic member 111 along the first direction X decreases, the thickness of the third support plate 110 also decreases accordingly.

[0095] Through the above settings, in combination with Figure 4 And Figure 6 , during the process of the rotating mechanism 10 transitioning from the folded state to the unfolded state, the extrusion force F acting on the third support plate 110 increases, and the elastic member 111 undergoes elastic deformation under the action of the extrusion force F, and the dimension of the elastic member 111 along the first direction X increases, causing the thickness of the third support plate 110 to increase. During the process of the rotating mechanism 10 transitioning from the unfolded state to the folded state, the extrusion force F acting on the third support plate 110 decreases, and the elastic member 111 undergoes deformation under the action of the elastic restoring force, and the dimension of the elastic member 111 along the first direction X decreases, causing the thickness of the third support plate 110 to decrease.

[0096] In some embodiments, referring to Figure 7 ,Figure 8a , Figure 8b and Figure 9 As shown, the elastic member 111 may include a hollow structure 1113. During the process of the rotating mechanism 10 transitioning from the folded state to the unfolded state, the dimension of the hollow structure 1113 in the first direction X increases; during the process of the rotating mechanism 10 transitioning from the folded state to the unfolded state, the dimension of the hollow structure 1113 in the first direction X decreases.

[0097] For example, the hollow structure 1113 may include a through hole. The shape of the through hole may be cylindrical. The through hole may be disposed through the elastic member 111, and the axial direction of the through hole may be perpendicular to the first direction X. Among them, the through hole can be regarded as a kind of hollow structure 1113 communicating with the external environment. When the extrusion force on the hollow structure 1113 in the second direction Y increases, the dimension of the through hole in the first direction X increases (as Figure 8a and Figure 8b shown, the cross-sectional shape of the through hole in the direction perpendicular to the second direction Y may change from circular to elliptical, and the major axis of the ellipse may be parallel to the first direction X), and the dimension of the hollow structure 1113 in the first direction X increases; when the extrusion force on the hollow structure 1113 in the second direction Y decreases, the dimension of the through hole in the first direction X decreases (as Figure 8a and Figure 8b shown, the cross-sectional shape of the through hole in the direction perpendicular to the second direction Y may change from elliptical to circular), and the dimension of the hollow structure 1113 in the first direction X decreases.

[0098] Through the above settings, combined with Figure 4 and Figure 6 , during the process of the rotating mechanism 10 transitioning from the folded state to the unfolded state, the extrusion force F acting on the third support plate 110 increases, and the hollow structure 1113 undergoes elastic deformation under the action of the extrusion force, and the dimension of the hollow structure 1113 in the first direction X increases, so that the thickness of the third support plate 110 increases. During the process of the rotating mechanism 10 transitioning from the unfolded state to the folded state, the extrusion force F acting on the third support plate 110 decreases, and the hollow structure 1113 undergoes deformation under the action of the elastic restoring force, and the dimension of the hollow structure 1113 in the first direction X decreases, so that the thickness of the third support plate 110 decreases.

[0099] In some other embodiments, the hollow structure 1113 may also include a closed structure. Figure 10a For another Figure 7 is a cross-sectional view along the A-A section line when the third support plate in Figure 10b For another Figure 7 is a cross-sectional view along the A-A section line when the third support plate in Figure 11 For another Figure 7Cross-sectional view of the third support plate along the B-B sectional line. For example, referring to Figure 7 , Figure 10a , Figure 10b and Figure 11 shown, the hollow structure 1113 may include a closed cavity 1115, and there is a fluid 113 inside the cavity 1115. During the process of the rotating mechanism 10 transitioning from the folded state to the unfolded state, the dimension of the cavity 1115 along the first direction X increases; during the process of the rotating mechanism 10 transitioning from the folded state to the unfolded state, the dimension of the cavity 1115 along the first direction X decreases. Here, "fluid 113" can be understood as the general term for liquids and gases. The fluid 113 has no definite shape and has fluidity and compressibility. When the shape of the cavity 1115 changes, the shape of the fluid 113 inside the cavity 1115 also changes accordingly. Among them, the fluid 113 inside the cavity 1115 can be all gas, or the fluid 113 inside the cavity 1115 can be all liquid, or the fluid 113 inside the cavity 1115 can include liquid and gas.

[0100] Through the above settings, in combination with Figure 4 and Figure 6 , during the process of the rotating mechanism 10 transitioning from the folded state to the unfolded state, the extrusion force F acting on the third support plate 110 increases, and the cavity 1115 undergoes elastic deformation under the action of the extrusion force F, and the dimension of the cavity 1115 along the first direction X increases, so that the thickness of the third support plate 110 increases. During the process of the rotating mechanism 10 transitioning from the unfolded state to the folded state, the extrusion force F acting on the third support plate 110 decreases, and the cavity 1115 undergoes deformation under the action of the elastic restoring force, and the dimension of the cavity 1115 along the first direction X decreases, causing the thickness of the third support plate 110 to decrease. Further, by providing the fluid 113 inside the cavity 1115, it is also beneficial to increase the support effect on the flexible screen 30.

[0101] In some embodiments, the material of the fluid 113 includes inert materials. Here, "inert materials" can be understood as having stable chemical properties under normal temperature (or temperature higher than normal temperature) and normal pressure (or atmospheric pressure higher than normal pressure) conditions. For example, inert materials can include carbon monoxide, carbon dioxide, nitrogen, water, etc. Through the above settings, it is possible to prevent the fluid 113 from reacting with other structures in the electronic device after leakage, which is beneficial to improving the reliability of the electronic device.

[0102] Of course, in other embodiments where the sealing performance of the cavity 1115 is good, the fluid 113 can also include other materials, such as alcohol, oxygen, etc.

[0103] In some embodiments, the inert material includes at least one of a fluorinated liquid or an inert gas. It can be understood that the fluorinated liquid has good chemical inertness and electrical insulation. Thus, filling the fluorinated liquid in the cavity 1115 is conducive to further improving the reliability of the electronic device. Among them, the inert gas includes helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), and radon (Rn). The chemical properties of the inert gas are extremely inactive, and filling the inert gas in the cavity 1115 is also conducive to further improving the reliability of the electronic device.

[0104] In some embodiments, referring to Figure 7 , Figure 10a , Figure 10b and Figure 11 as shown, the hollow structure 1113 can be a tube body 112. The tube body 112 has a cavity 1115 and is in a long strip shape. In the embodiments of the present application, the shape of the tube body 112 is not specifically limited. For example, the tube body 112 can be a long strip shape extending along a curve or a long strip shape extending along a straight line. The cross-sectional shape of the tube body 112 in a plane parallel to the first direction X can be circular, rectangular, trapezoidal, etc. Through the above settings, the fluid 113 can be located inside the tube body 112. Under the action of an extrusion force, the tube wall of the tube body 112 deforms, so that the dimension of the tube body 112 along the first direction X increases; under the action of an elastic restoring force, the tube wall of the tube body 112 deforms, so that the dimension of the tube body 112 along the first direction X decreases.

[0105] In some embodiments, the extending direction of the length of the tube body 112 is parallel to the second direction Y. Exemplarily, the length direction of the tube body 112 can be the direction with a larger dimension in the long strip structure. Exemplarily, the tube body 112 can be a cylindrical tube body 112, and the extending direction of the length of the tube body 112 is also the extending direction of the axis of the tube body 112. Through the above settings, the first support plate 210 and the second support plate 310 respectively squeeze the two sides of the third support plate 110 along the second direction Y, that is, the extending direction of the length of the tube body 112 is squeezed, which is conducive to increasing the deformation amount of the tube body 112, and further increasing the deformation amount of the thickness of the third support plate 110. At the same time, since the deformation amount of the thickness of the third support plate 110 increases, when the rotating mechanism 10 is in the unfolded state, the distance between the support surface N1 of the third support plate 110 and the flexible screen 30 is further reduced, which is conducive to further improving the support effect of the third support plate 110 on the flexible screen 30 and is conducive to further improving the crease of the flexible screen 30.

[0106] Of course, in some other embodiments, the extending direction of the length of the tube body 112 may also be perpendicular to or intersect with the second direction Y. The embodiments of the present application do not specifically limit the extending direction of the length of the tube body 112, as long as the tube body 112 can be deformed under the extrusion force.

[0107] Figure 12 is another Figure 7 Cross-sectional view of the third support plate along the A-A section line in; Figure 13 is another Figure 7 Cross-sectional view of the third support plate along the B-B section line in. Refer to Figure 12 and Figure 13 As shown, the number of the tube bodies 112 can be multiple, and in the first direction X, multiple tube bodies 112 are stacked. As Figure 12 shown, in the first direction X, two tube bodies 112 can be stacked. Through the above settings, the first support plate 210 and the second support plate 310 respectively extrude both sides of the third support plate 110 along the second direction Y, that is, the extending direction of the length of the tube body 112 is subjected to extrusion, and each tube body 112 arranged along the first direction X is deformed, thereby increasing the deformation amount of the thickness of the third support plate 110. At the same time, since the deformation amount of the thickness of the third support plate 110 increases, when the rotating mechanism 10 is in the unfolded state, the distance between the support surface N1 of the third support plate 110 and the flexible screen 30 is further reduced, which is beneficial to further improving the support effect of the third support plate 110 on the flexible screen 30 and is beneficial to further improving the crease of the flexible screen 30.

[0108] Among them, as described in the above embodiments, the extending direction of the length of each tube body 112 stacked along the first direction X can be parallel to the second direction Y. Or, in some other embodiments, the extending directions of the lengths of each tube body 112 stacked along the first direction X can also be different. For example, in the first direction X, the extending direction of the length of the tube body 112 at the bottom can be parallel to the second direction Y, and the extending direction of the length of the tube body 112 at the top can be perpendicular to the second direction Y.

[0109] In some embodiments, the elastic member 111 may further include a connecting portion 115. In a direction parallel to the supporting surface N1 of the third supporting plate 110, a plurality of tube bodies 112 are arranged, and the connecting portion 115 may be connected between two adjacent tube bodies 112. Exemplarily, in a direction parallel to the supporting surface N1 of the third supporting plate 110, a plurality of tube bodies 112 may be arranged at intervals, and the extending direction of the length of the tube body 112 may be parallel to the second direction Y. Correspondingly, the connecting portion 115 may be connected between any two adjacent tube bodies 112. Alternatively, the number of the connecting portions 115 may also be plural, and one connecting portion 115 may be connected between two adjacent tube bodies 112. Through the above arrangement, in a direction parallel to the supporting surface N1 of the third supporting plate 110, a plurality of tube bodies 112 and a plurality of connecting portions 115 are connected together, which is beneficial to improving the connection reliability between the tube bodies 112.

[0110] For example, the connecting portion 115 may be generally in a rectangular columnar structure. The center line of the connecting portion 115 and the center line of the tube body 112 are coplanar. The thickness of the connecting portion 115 in the first direction X may be less than or equal to the thickness of the tube body 112 in the first direction X. Through the above arrangement, it is beneficial to reduce the connection area between the connecting portion 115 and the tube wall of the tube body 112. When the tube wall of the tube body 112 deforms, it can prevent the connecting portion 115 from pulling the tube wall of the tube body 112, and further prevent the connecting portion 115 from hindering the deformation of the tube body 112. Of course, in some other embodiments, the connecting portion 115 may also be of other shapes. The embodiments of the present application do not specifically limit the shape of the connecting portion 115, as long as it can realize the connection between a plurality of tube bodies 112 and does not affect the deformation of the tube body 112.

[0111] In some embodiments, the tube body 112 and the connecting portion 115 may be integrally formed. In the embodiments of the present application, the manufacturing process of the elastic member 111 may include the following steps: The tube body 112 and the connecting portion 115 may be simultaneously manufactured by an integral forming process. At this time, the cavity 1115 of the tube body 112 may be a cavity 1115 communicating with the external environment. After manufacturing the tube body 112 and the connecting portion 115, the above-mentioned fluid 113 may be filled into the cavity 1115 of the tube body 112, and the material of the fluid 113 will not be elaborated here. After filling the fluid 113 into the cavity 1115, the tube body 112 may be sealed so that the tube body 112 has a closed cavity 1115. For example, the tube body 112 may be sealed by a low-temperature diffusion welding process. Here, "integral forming" may be understood as simultaneously forming the connecting portion 115 and the tube body 112 having a cavity 1115 communicating with the external environment by the same manufacturing process. Through the above arrangement, it is beneficial to improve the connection reliability between the connecting portion 115 and the tube body 112, and further improve the reliability of the elastic member 111.

[0112] In the integrated structure 111a formed by the tube body 112 and the connecting portion 115, a part of the connecting portion 115 may also be located at the edge of the integrated structure 111a. Exemplarily, as Figure 12 and Figure 13 shown in the integrated structure 111a, a part of the connecting portion 115 is located at the leftmost and rightmost sides of the integrated structure 111a. By arranging a part of the connecting portion 115 at the edge of the integrated structure 111a, it is beneficial to further avoid the rupture of the tube body 112 and thus prevent leakage, which is beneficial to further improve the reliability of the elastic member 111.

[0113] In some embodiments, the material of the tube body 112 includes TPU (Thermoplastic Urethane), PET (Polyethylene terephthalate), or silicone rubber. Among them, the tube body 112 made of the above materials can produce certain elastic deformation when subjected to extrusion pressure, so that the thickness of the third support plate 110 can be changed. In the embodiment where the tube body 112 and the connecting portion 115 are integrally formed, the material of the connecting portion 115 may be the same as that of the tube body 112, which will not be elaborated here.

[0114] Based on the above embodiments, the elastic member 111 may further include a first adhesive layer 117a, and the first adhesive layer 117a may be connected between two tube bodies 112 stacked along the first direction X. Exemplarily, in the direction parallel to the support surface N1 of the third support plate 110, a plurality of tube bodies 112 and the connecting portions 115 connecting the plurality of tube bodies 112 together constitute an elastic layer. In the first direction X, a plurality of elastic layers may be stacked so that the tube bodies 112 in each elastic layer can be stacked along the first direction X. Among them, a plurality of tube bodies 112 stacked along the first direction X can be connected together by an integrated pressing and forming process. For example, after a plurality of elastic layers are stacked, glue can be injected between the elastic layers and pressed and cured to form the first adhesive layer 117a connected between two tube bodies 112 stacked along the first direction X. Moreover, the first adhesive layer 117a may also be connected between two connecting portions 115 stacked along the first direction X. Through the above arrangement, it is beneficial to improve the connection reliability between two tube bodies 112 stacked along the first direction X, and thus improve the reliability of the elastic member 111.

[0115] Figure 14a For another Figure 7 Cross-sectional view along the A-A section line when the third support plate is in the folded state; Figure 14b For another Figure 7 Cross-sectional view along the A-A section line when the third support plate is in the unfolded state; Figure 15 For anotherCross-sectional view of the third support plate along the B-B section line in Figure 7 . In some embodiments, as Figure 14a , Figure 14b and Figure 15 shown, the third support plate 110 includes a plurality of support members 118, and the elastic member 111 and the support members 118 are stacked along the first direction X. The support member 118 includes a first support member 118a located on one side of the elastic member 111 along the first direction X, and the support member 118 further includes a second support member 118b located on the other side of the elastic member 111 along the first direction X. During the process of the rotation mechanism 10 being converted from the folded state to the unfolded state, in the first direction X, the distance D5 between the first support member 118a and the second support member 118b increases. During the process of the rotation mechanism 10 being converted from the unfolded state to the folded state, in the first direction X, the distance D5 between the first support member 118a and the second support member 118b decreases.

[0116] As described in the above embodiments, during the process of the rotation mechanism 10 being converted from the folded state to the unfolded state, the dimension of the elastic member 111 along the first direction X increases. Since the first support member 118a and the second support member 118b are respectively located on both sides of the elastic member 111 along the first direction X, the thickness of the third support plate 110 increases, so that the distance D5 between the first support member 118a and the second support member 118b along the first direction X increases. Through the above arrangement, it is beneficial to reduce the distance between the support surface N1 of the third support plate 110 and the flexible screen 30, which is beneficial to improving the support effect of the third support plate 110 on the flexible screen 30 and is beneficial to improving the crease of the flexible screen 30.

[0117] Similarly, during the process of the rotation mechanism 10 being converted from the unfolded state to the folded state, the dimension of the elastic member 111 along the first direction X decreases. Since the first support member 118a and the second support member 118b are respectively located on both sides of the elastic member 111 along the first direction X, the thickness of the third support plate 110 decreases, so that the distance D5 between the first support member 118a and the second support member 118b along the first direction X decreases. Through the above arrangement, the distance between the support surface N1 of the third support plate 110 and the flexible screen 30 increases, which is beneficial to further increasing the accommodation space M formed by the first support plate 210, the third support plate 110 and the second support plate 310, thereby further improving the reliability of the flexible screen 30.

[0118] ​Among them, the hardness of the support member 118 can be greater than that of the elastic member 111, so that the support member 118 can play a supporting effect. In some embodiments, the material of the support member 118 may include at least one of carbon fiber, PI (Polyimide) fiber, Peek (Poly ether ether ketone) fiber, or hybrid fiber. Through the above arrangement, deformation of the support member 118 is avoided, which is beneficial to ensuring the supporting effect of the support member 118.

[0119] In the embodiments of the present application, the numbers of the support member 118 and the elastic member 111 are not specifically limited. For example, the number of the elastic members 111 can be one, and the number of the support members 118 can be at least two. Among them, the support member 118 may include at least one first support member 118a and at least one second support member 118b. Alternatively, the numbers of the support member 118 and the elastic member 111 can both be multiple, and the support member 118 and the elastic member 111 are alternately stacked along the first direction X. Of course, the arrangement manners of the support member 118 and the elastic member 111 along the first direction X in the embodiments of the present application can also be other examples.

[0120] In some embodiments, the support member 118 can be located at the outermost layer of the third support plate 110 along the first direction X. Exemplarily, as Figure 14a shown in the third support plate 110, the first support member 118a can be located at the topmost layer of the third support plate 110, and the second support plate 310 can be located at the bottommost layer of the third support plate 110. It can be understood that after the third support plate 110 is assembled to the rotating mechanism 10, the bottommost layer of the third support plate 110 needs to contact the housing 120, the topmost layer of the third support plate 110 has a support surface N1 of the third support plate 110, and the support surface N1 of the third support plate 110 needs to provide a supporting effect for the flexible screen 30. The support member 118 being located at the outermost layer of the third support plate 110 along the first direction X is beneficial to ensuring the connection reliability between the third support plate 110 and the housing 120. At the same time, it is also beneficial to ensuring the supporting effect of the third support on the flexible screen 30.

[0121] In some embodiments, the elastic member 111 may further include a second adhesive layer 117b, and the second adhesive layer 117b may be connected between the tube body 112 and the support member 118. As described in the above embodiments, the tube body 112 and the support member 118 may be connected together by an integrated pressing and molding process. For example, after the tube body 112 and the support member 118 are stacked, glue may be injected and then pressed and cured. The glue between the tube body 112 and the support member 118 cures to form the second adhesive layer 117b. Moreover, the second adhesive layer 117b may also be connected between the connecting portion 115 and the support member 118. The glue surrounding the edge of the integrated structure 111a formed by the tube body 112 and the connecting portion 115 cures to form a third adhesive layer 117c, and the third adhesive layer 117c is integrally formed with the second adhesive layer 117b. Through the above arrangement, it is beneficial to improve the connection reliability between the elastic member 111 and the support member 118, and further improve the reliability of the third support plate 110.

[0122] Figure 16 For another Figure 7 Cross-sectional view of the third support plate in [specific reference] along the A-A section line; Figure 17 For another Figure 7 Cross-sectional view of the third support plate in [specific reference] along the B-B section line. As Figure 16 and Figure 17 shown, in the embodiment where the elastic member 111 further includes a plurality of tube bodies 112 stacked along the first direction X, and the first adhesive layer 117a is connected between two tube bodies 112 stacked along the first direction X, the first adhesive layer 117a and the second adhesive layer 117b may be integrally formed. For example, after the tube body 112 and the support member 118 are stacked, glue may be injected. Among them, the glue may fill between the first support plate 210 and the second support plate 310, and the glue wraps around the periphery of the integrated structure 111a formed by the tube body 112 and the connecting portion 115. After injection, pressing and curing are performed. Among them, the glue between two tube bodies 112 stacked along the first direction X cures to form the first adhesive layer 117a, the glue between the tube body 112 and the support member 118 cures to form the second adhesive layer 117b, and the glue surrounding the periphery of the integrated structure 111a formed by the tube body 112 and the connecting portion 115 cures to form the third adhesive layer 117c, and the third adhesive layer 117c is connected between the first adhesive layer 117a and the second adhesive layer 117b.

[0123] Exemplarily, the materials of the first adhesive layer 117a, the second adhesive layer 117b, and the third adhesive layer 117c may include high molecular polymers, such as rubber, modified epoxy resin (e.g., epoxy resin modified with rubber), etc. It can be understood that the first adhesive layer 117a, the second adhesive layer 117b, and the third adhesive layer 117c also have a certain elasticity. When the elastic member 111 is subjected to a squeezing force along the second direction Y, the squeezing force can be transmitted to the pipe body 112 through the first adhesive layer 117a, the second adhesive layer 117b, and the third adhesive layer 117c, so that the pipe body 112 can be deformed.

[0124] Figure 18 is a Figure 7 cross-sectional view of the third support plate along the C-C section line in Figure 19 is a Figure 7 cross-sectional view of the third support plate along the D-D section line in. As Figure 18 and Figure 19 shown, in some embodiments, the third support plate 110 may further include a through hole 1117 penetrating therethrough. The orthographic projection of the through hole 1117 on the support surface N1 of the third support plate 110 does not overlap with the orthographic projection of the pipe body 112 on the support surface N1 of the third support plate 110. Exemplarily, after the third support plate 110 is formed, the shape of the third support plate 110 can be trimmed by a stamping process. At the same time, the through hole 1117 can also be stamped on the third support plate 110. Through the above settings, it is avoided that the fluid 113 in the pipe body 112 leaks from the through hole 1117, which is beneficial to improving the reliability of the third support plate 110.

[0125] Among them, the specific position of the through hole 1117 on the third support plate 110 is not limited in the embodiments of the present application. In some examples, as described in the above embodiments, in combination with Figure 4 and Figure 7 , the housing 120 and the third support plate 110 can jointly enclose a first arc-shaped chute 101 and a second arc-shaped chute 102. Among them, the third support plate 110 may have at least two through holes 1117. At least one through hole 1117 communicates with the first arc-shaped chute 101, and at least one through hole 1117 communicates with the second arc-shaped chute 102. Through the above settings, in the first rotating assembly 200, the first arc-shaped slider 221 of the first swing arm 220 can slide into the through hole 1117, and in the second rotating assembly 300, the second arc-shaped slider 321 of the second swing arm 320 can also slide into the through hole 1117.

[0126] Figure 20 is a cross-sectional view of the first support plate, the second support plate, and the third support plate in an unfolded state. In some embodiments, referring to Figure 20As shown, when the rotating mechanism 10 is in the deployed state, in the second direction Y, the first support plate 210 and / or the second support plate 310 do not overlap with the support member 118, and the first support plate 210 and / or the second support plate 310 overlap at least partially with the elastic member 111. Exemplarily, in the second direction Y, the first support plate 210 may be arranged in an interleaved manner with the first support member 118a, and the first support plate 210 may also be arranged in an interleaved manner with the second support member 118b, so that the first support plate 210 does not overlap with the support member 118; in the second direction Y, the first support plate 210 faces the elastic member 111, so that the first support plate 210 overlaps at least partially with the elastic member 111. Through the above arrangement, it is beneficial for the first support plate 210 to squeeze one side of the elastic member 111 along the second direction Y, which is beneficial to increasing the squeezing force received by the elastic member 111, and further beneficial to increasing the deformation amount of the elastic member 111 along the first direction X.

[0127] Similarly, the second support plate 310 may be arranged in an interleaved manner with the first support member 118a, and the second support plate 310 may also be arranged in an interleaved manner with the second support member 118b, so that the second support plate 310 does not overlap with the support member 118; in the second direction Y, the second support plate 310 faces the elastic member 111, so that the second support plate 310 overlaps at least partially with the elastic member 111. Through the above arrangement, it is beneficial for the second support plate 310 to squeeze the other side of the elastic member 111 along the second direction Y, which is beneficial to increasing the squeezing force received by the elastic member 111, and further beneficial to increasing the deformation amount of the elastic member 111 along the first direction X.

[0128] Furthermore, since the support member 118 may be located at the outermost layer of the third support plate 110 along the first direction X. Through the above arrangement, compared with the support surface N1 of the third support plate 110, the support surfaces N2 of the first support plate 210 and N3 of the second support plate 310 are closer to the housing 120. Here, the "support surface N2 of the first support plate 210" can be understood as the surface of the first support plate 210 away from the housing 120 (for example, the top surface of the first support plate 210 in Figure 20 ), and the support surface N2 of the first support plate 210 is used to form part of the support plane; the "support surface N3 of the second support plate 310" can be understood as the surface of the second support plate 310 away from the housing 120 (for example, the top surface of the second support plate 310 in Figure 20 ), and the support surface N2 of the second support plate 310 is used to form part of the support plane. Through the above arrangement, it is beneficial to further reduce the distance between the support surface N1 of the third support plate 110 and the flexible screen 30, beneficial to further improving the support effect of the third support plate 110 on the flexible screen 30, and beneficial to further improving the crease of the flexible screen 30.

[0129] Figure 21It is a cross-sectional view of another first support plate, second support plate, and third support plate in an unfolded state. Refer to Figure 21 As shown, in some embodiments, the elastic member 111 extends beyond the support member 118 in the second direction Y. Exemplarily, the dimension of the elastic member 111 in the second direction Y may be greater than the dimension of the support member 118 in the second direction Y, and the orthographic projection of the support member 118 on the elastic member 111 is located within the edge of the elastic member 111. Through the above arrangement, it is beneficial for the first support plate 210 to squeeze one side of the elastic member 111 along the second direction Y, which is beneficial to increasing the squeezing force received by the elastic member 111, and thus beneficial to increasing the deformation amount of the elastic member 111 along the first direction X; at the same time, it is beneficial for the second support plate 310 to squeeze the other side of the elastic member 111 along the second direction Y, which is beneficial to increasing the squeezing force received by the elastic member 111, and thus beneficial to increasing the deformation amount of the elastic member 111 along the first direction X.

[0130] In the embodiment where the elastic member 111 extends beyond the support member 118 in the second direction Y, in the second direction Y, the first support plate 210 and / or the second support plate 310 do not overlap with the support member 118, and the first support plate 210 and / or the second support plate 310 overlap at least partially with the elastic member 111. Alternatively, in the second direction Y, the first support plate 210 and / or the second support plate 310 overlap at least partially with the support member 118. The embodiments of the present application do not specifically limit this.

[0131] The embodiments of the present application further provide a support plate, and the third support plate 110 in any of the above embodiments can be this support plate. As Figure 14a 、 Figure 14b and Figure 15 shown, the support plate may include a first support member 118a, an elastic member 111, and a second support member 118b that are sequentially stacked along the first direction X. The elastic member 111 includes a plurality of tubes 112, and a fluid 113 is provided inside the tubes 112. Among them, the structures and materials of the first support member 118a, the second support member 118b, and the elastic member 111 may be as described in the above embodiments, and will not be elaborated here. In response to a squeezing force acting on the support plate and perpendicular to the first direction X, the dimension of the support plate in the first direction X increases. In response to the elastic restoring force of the elastic member 111, the dimension of the support plate in the first direction X decreases.

[0132] During actual use, the support plate can be installed on the housing 120, and the surface of the support plate away from the housing 120 is a support surface for supporting the flexible screen 30. When the size of the support plate in the first direction X increases, the distance between the support surface of the support plate and the flexible screen 30 decreases, which is beneficial to improving the support effect of the support plate on the flexible screen 30 and beneficial to improving the crease of the flexible screen 30. When the size of the support plate in the first direction X decreases, the distance between the support surface of the support plate and the housing 120 decreases, so that the distance between the support surface of the support plate and the flexible screen 30 increases, thereby further improving the reliability of the flexible screen 30.

[0133] The above are only specific embodiments of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed in the present application should be covered by the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A rotating mechanism, characterized in that, Comprising: A main shaft assembly, a first support plate, and a second support plate, wherein the main shaft assembly includes a third support plate and a housing; When the rotating mechanism is in the folded state, the first support plate, the third support plate, and the second support plate are located on the same side of the housing. The first support plate, the third support plate, and the second support plate together form an accommodation space. The thickness of the third support plate is a first thickness. Along a first direction, the distance between the support surface of the third support plate and the housing is a first distance. The thickness of the third support plate is the dimension of the third support plate in the first direction. Wherein, along the first direction, at least part of the third support plate and the housing are stacked; When the rotating mechanism is in the unfolded state, the first support plate, the third support plate, and the second support plate are arranged in sequence along a second direction. The first support plate, the third support plate, and the second support plate form a support plane, and the support plane is perpendicular to the first direction. The thickness of the third support plate is a second thickness. Along the first direction, the distance between the support surface of the third support plate and the housing is a second distance. Wherein, the second thickness is greater than the first thickness, and the second distance is greater than the first distance; During the process of the rotating mechanism converting between the unfolded state and the folded state, the first support plate rotates relative to the third support plate, and the second support plate rotates relative to the third support plate.

2. The rotating mechanism according to claim 1, wherein The rotating mechanism includes a first rotating assembly and a second rotating assembly, and the first rotating assembly and the second rotating assembly are respectively rotatably connected to the main shaft assembly; When the rotating mechanism is in the unfolded state, the third support plate is squeezed and arranged between the first rotating assembly and the second rotating assembly; During the process of the rotating mechanism converting from the folded state to the unfolded state, in response to the extrusion of the third support plate by the first rotating assembly and the second rotating assembly, the thickness of the third support plate increases; During the process of the rotating mechanism converting from the unfolded state to the folded state, the thickness of the third support plate decreases.

3. The rotating mechanism according to claim 2, wherein, The first rotating assembly includes the first support plate, and the second rotating assembly includes the second support plate; When the rotating mechanism is in the unfolded state, the third support plate is squeezed and arranged between the first support plate and the second support plate; During the process of the rotating mechanism converting from the folded state to the unfolded state, in response to the extrusion of the third support plate by the first support plate and the second support plate, the thickness of the third support plate increases; During the process of the rotating mechanism converting from the unfolded state to the folded state, the thickness of the third support plate decreases.

4. The rotating mechanism according to any one of claims 1-3, characterized in that, The third support plate includes an elastic member, During the process of the rotating mechanism converting from the folded state to the unfolded state, the dimension of the elastic member along the first direction increases; During the process of the rotating mechanism converting from the unfolded state to the folded state, the dimension of the elastic member along the first direction decreases.

5. The rotating mechanism according to claim 4, wherein The elastic member includes a hollow structure, During the process of the rotation mechanism converting from the folded state to the unfolded state, the dimension of the hollow structure in the first direction increases; During the process of the rotation mechanism converting from the folded state to the unfolded state, the dimension of the hollow structure in the first direction decreases.

6. The rotating mechanism according to claim 5, characterized in that, The hollow structure includes a closed cavity, and there is fluid in the cavity; During the process of the rotation mechanism converting from the folded state to the unfolded state, the dimension of the cavity in the first direction increases; During the process of the rotation mechanism converting from the folded state to the unfolded state, the dimension of the cavity in the first direction decreases.

7. The rotating mechanism according to claim 6, wherein The material of the fluid includes inert materials.

8. The rotating mechanism according to claim 7, wherein The inert materials include at least one of fluorinated liquid or inert gas.

9. The rotating mechanism according to any one of claims 6-8, characterized in that, The hollow structure is a tube body, the tube body has the cavity, and the tube body is strip-shaped.

10. The rotating mechanism according to claim 9, wherein, The extending direction of the length of the tube body is parallel to the second direction.

11. The rotating mechanism according to any one of claims 9-10, characterized in that, The number of the tube bodies is multiple, and in the first direction, the multiple tube bodies are stacked.

12. The rotating mechanism according to claim 11, wherein, The elastic member further includes a first adhesive layer, and the first adhesive layer is connected between two tube bodies stacked in the first direction.

13. The rotating mechanism according to claim 11 or 12, characterized in that, The elastic member further includes a connecting portion, and in the direction parallel to the supporting surface of the third supporting plate, the connecting portion is connected between two adjacent tube bodies.

14. The rotating mechanism according to claim 13, wherein, The tube body and the connecting portion are integrally formed.

15. The rotating mechanism according to any one of claims 9-14, characterized in that, The material of the tube body includes TPU, PET or silicone rubber.

16. The rotating mechanism according to any one of claims 9-15, characterized in that, The third supporting plate includes multiple supporting members, the elastic member and the supporting members are stacked in the first direction, the supporting members include a first supporting member located on one side of the elastic member in the first direction, and the supporting members further include a second supporting member located on the other side of the elastic member in the first direction; During the process of the rotation mechanism converting from the folded state to the unfolded state, in the first direction, the distance between the first supporting member and the second supporting member increases; During the process of the rotation mechanism converting from the unfolded state to the folded state, in the first direction, the distance between the first supporting member and the second supporting member decreases.

17. The rotation mechanism according to claim 16, wherein When the rotation mechanism is in the unfolded state, in the second direction, the supporting plate and / or the second supporting plate do not overlap with the supporting member, and the first supporting plate and / or the second supporting plate overlap at least partially with the elastic member.

18. The rotating mechanism according to claim 16 or 17, characterized in that, The elastic member extends beyond the supporting member in the second direction.

19. The rotating mechanism according to any one of claims 16-18, characterized in that, The material of the supporting member includes at least one of carbon fiber, PI fiber, Peek fiber or hybrid fiber.

20. The rotating mechanism according to any one of claims 16-19, characterized in that, The supporting member is located on the outermost layer of the third supporting plate in the first direction.

21. The rotation mechanism according to any one of claims 16-20, characterized in that, The elastic member further includes a second adhesive layer, and the second adhesive layer is connected between the tube body and the supporting member.

22. The rotation mechanism according to any one of claims 9-21, characterized in that, The third supporting plate further includes a through hole penetrating it, and the orthographic projection of the through hole on the supporting surface of the third supporting plate does not overlap with the orthographic projection of the tube body on the supporting surface of the third supporting plate.

23. A foldable electronic device, characterized in that, A flexible screen, a first structural member, a second structural member, and a rotating mechanism according to any one of claims 1-22; The first structural member and the second structural member are connected to two sides of the rotating mechanism, the flexible screen is located on the same side of the first structural member and the second structural member, and the flexible screen is respectively connected to the first structural member and the second structural member.

24. A support plate, characterized in that, The support plate includes a first support member, an elastic member, and a second support member that are sequentially stacked along a first direction. The elastic member includes a plurality of tubes, and a fluid is provided in the tubes; In response to a squeezing force acting on the support plate and perpendicular to the first direction, the size of the support plate in the first direction increases; In response to the elastic restoring force of the elastic member, the size of the support plate in the first direction decreases.

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