A foldable screen device

Abstract

The present application discloses a folding screen device, which includes: a first folding component; a second folding component, wherein the first folding component and the second folding component are folded through a rotating shaft; and a heat-conducting component, wherein the heat-conducting component is arranged on the rotating shaft and conducts the first folding component and the second folding component. In this embodiment, the heat of the second folding component is transferred to the first folding component through the heat-conducting component, thereby reducing the local high temperature of the folding component where the main circuit board is arranged, so that the temperature of the first folding component and the temperature of the second folding component are roughly equal, so that customers can use the device better and improve the customer experience.

Description

Technical Field

[0001] The present application relates to the technical field of mobile terminal devices, and in particular to a folding screen device. Background Art

[0002] As people's living standards continue to improve, foldable screen devices have become a key area of ​​competition among major manufacturers.

[0003] A foldable screen device usually includes at least two foldable components and a hinge. The foldable components are rotatably connected by the hinge to achieve closing and opening.

[0004] However, the main heat-generating chips are generally concentrated in one of the folding components, which will cause serious uneven heating of the entire machine. Summary of the invention

[0005] Therefore, the present invention provides a folding screen device to solve the above-mentioned problems.

[0006] The present invention provides a folding screen device, the folding screen device comprising:

[0007] a first folding component;

[0008] A second folding assembly, wherein the first folding assembly and the second folding assembly are folded by a rotating shaft body;

[0009] A heat-conducting component is disposed on the rotating shaft body and conducts electricity between the first folding component and the second folding component.

[0010] As the best achievable method, the first folding component includes a first frame, the second folding component includes a second frame, the first frame, the rotating shaft body and the second frame are arranged in sequence, the first frame is rotationally matched with the rotating shaft body, and the second frame is rotationally matched with the rotating shaft body.

[0011] As the best achievable method, the rotating shaft body includes a first curved surface portion and a second curved surface portion that are relatively arranged, the first curved surface portion is rotationally matched with the first frame body, the second curved surface portion is rotationally matched with the second frame body, the axis of the first curved surface portion is back to the first frame body, and the axis of the second curved surface portion is back to the second frame body.

[0012] As the best achievable manner, the bending deformation portion of the heat conducting component is disposed between the first curved surface portion and the second curved surface portion.

[0013] As the best achievable method, the heat conductive component further includes a first positioning portion and a second positioning portion, the bending deformation portion connects the first positioning portion and the second positioning portion, the first positioning portion is positioned and matched with the first frame, and the second positioning portion is positioned and matched with the second frame.

[0014] As the best achievable manner, the heat conducting component is connected to the first frame body and the second frame body, and the heat conducting component is bent and deformed according to the rotation of the first frame body and the second frame body.

[0015] The heat-conducting component includes a flexible circuit board and a flexible heat-conducting layer, wherein a first portion of the flexible heat-conducting layer covers a surface of the flexible circuit board that is away from the first frame body and the second frame body.

[0016] Wherein, the flexible heat-conducting layer comprises a polyimide film.

[0017] As the best achievable manner, the flexible heat-conductive layer further includes a second portion, the second portion covers a surface of the flexible circuit board close to the first frame, and the second portion abuts against a surface of the first frame away from the flexible circuit board.

[0018] As the best achievable manner, the flexible heat-conductive layer further includes a third portion, the third portion covers the surface of the flexible circuit board close to the second frame, and the third portion abuts against the surface of the second frame away from the flexible circuit board.

[0019] As the best achievable manner, the first frame includes a first connecting portion, the heat conducting component is bent to form a first matching portion matching with the first connecting portion, and the first matching portion is plug-fitted with the first connecting portion.

[0020] As the best achievable manner, the second frame includes a second connecting portion, the heat conducting component is bent to form a second matching portion matching with the second connecting portion, and the second matching portion is plug-fitted with the second connecting portion.

[0021] In this embodiment, a heat-conducting component is provided to conduct heat between the first folding component and the second folding component, thereby using them as a bridge to achieve thermal conduction of the entire machine.

[0022] The heat of the second folding component is transferred to the first folding component, and the local high temperature of the folding component where the main circuit board is set is reduced, so that the temperature of the first folding component and the temperature of the second folding component are roughly equal, allowing customers to better use the equipment and improving customer experience; the bending deformation part B of the heat-conducting component is set between the first curved surface part and the second curved surface part, which is beneficial to the bending deformation part B not being interfered with; the heat-conducting component is positioned and matched with the first frame and the second frame respectively, limiting the freedom of the heat-conducting component along its length and width directions, and cannot produce large bending deformation with the closing or opening of the first frame or the second frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0024] Figure 1 is a schematic structural diagram of a folding screen device according to an embodiment of the present application;

[0025] Figure 2 An exploded schematic diagram of a folding screen device according to an embodiment of the present application;

[0026] Figure 3 is a schematic structural diagram of a heat conduction component according to an embodiment of the present application;

[0027] Figure 4 is an exploded schematic diagram of a heat-conducting component according to an embodiment of the present application;

[0028] Figure 5 is a schematic structural diagram of a flexible circuit board according to an embodiment of the present application;

[0029] Figure 6 is a schematic structural diagram of a flexible heat-conducting layer according to an embodiment of the present application. DETAILED DESCRIPTION

[0030] The present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the relevant application, rather than to limit the application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present application. It should also be noted that, for ease of description, only the parts related to the application are shown in the accompanying drawings.

[0031] In the description of the present application, it should be understood that the terms "radial", "axial", "upper", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In the description of the present application, unless otherwise specified, "plurality" means two or more.

[0032] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "setting", and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection: it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0033] Figure 1 A structural schematic diagram of a folding screen device is shown.

[0034] The folding screen device includes a first folding component, a second folding component, a heat conducting component, a folding screen 800 and a main circuit board 700. The first folding component and the second folding component are folded through the rotating shaft body 300; the heat conducting component is arranged on the rotating shaft body 300 and conducts the first folding component and the second folding component.

[0035] The folding screen device may be an electronic device such as a folding screen mobile phone, a folding screen tablet computer, a folding screen notebook, etc. The main circuit board 700 is the main heating element, so that the temperature of the first folding component or the local temperature of the first folding component where the main circuit board 700 is set is too high. The heat conducting component is used to conduct heat, and the heat conducting component includes materials such as graphite.

[0036] If the main circuit board 700 is set on the first folding component, the heat-conducting component transfers the heat of the first folding component to the second folding component, reduces the local high temperature of the first folding component, makes the temperature of the first folding component and the temperature of the second folding component roughly equal, allows customers to use the device better and improves customer experience. Conversely, if the main circuit board 700 is set on the second folding component, the heat-conducting component transfers the heat of the second folding component to the first folding component, reduces the local high temperature of the second folding component, makes the temperature of the first folding component and the temperature of the second folding component roughly equal, allows customers to use the device better and improves customer experience.

[0037] In some preferred embodiments, the first folding assembly includes a first frame body 100, the second folding assembly includes a second frame body 200, the first frame body 100, the rotating shaft body 300 and the second frame body 200 are arranged in sequence, the first frame body 100 is rotatably matched with the rotating shaft body 300, and the second frame body 200 is rotatably matched with the rotating shaft body 300.

[0038] refer to Figure 1 In this embodiment, the first folding assembly includes a first frame body 100, the second folding assembly includes a second frame body 200, the folding screen 800 is arranged above the first frame body 100 and the second frame body 200, and the folding screen 800 is connected to the first frame body 100 and the second frame body 200. The first frame body 100 and the second frame body 200 are arranged opposite to each other, and the rotating shaft body 300 is arranged between the first frame body 100 and the second frame body 200.

[0039] The first frame 100 rotates with the shaft body 300, so that the first frame 100 rotates relative to the shaft body 300; the second frame 200 rotates with the shaft body 300, so that the second frame 200 rotates relative to the shaft body 300. The first frame 100 and the second frame 200 rotate around the shaft body 300 to achieve the closing or opening of the first frame 100 and the second frame 200, thereby achieving the closing or opening of the folding screen 800. It should be noted that the angle formed by the first frame 100 and the second frame 200 can vary between 0° and 180°. The 0° formed by the first frame 100 and the second frame 200 is the closing of the first frame 100 and the second frame 200; the 180° formed by the first frame 100 and the second frame 200 is to achieve the opening of the first frame 100 and the second frame 200.

[0040] Furthermore, the rotating shaft body 300 includes a first curved surface portion 31 and a second curved surface portion 32 which are arranged opposite to each other, wherein the first curved surface portion 31 is rotationally matched with the first frame body 100, and the second curved surface portion 32 is rotationally matched with the second frame body 200, and the axis of the first curved surface portion 31 is arranged to face away from the first frame body 100, and the axis of the second curved surface portion 32 is arranged to face away from the second frame body 200.

[0041] refer to Figure 2In this embodiment, the cross section of the rotating shaft body 300 is bow-shaped, and the rotating shaft body 300 includes a first curved surface portion 31 and a second curved surface portion 32 arranged opposite to each other, the axis of the first curved surface portion 31 is arranged away from the first frame body 100, and the axis of the second curved surface portion 32 is arranged away from the second frame body 200. The first curved surface portion 31 is rotatably matched with the first frame body 100, so that the first frame body 100 rotates around the rotating shaft body 300; the second curved surface portion 32 is rotatably matched with the second frame body 200, so that the second frame body 200 rotates around the rotating shaft body 300. The above structure is simple, space-saving, and is conducive to setting the wires connecting the folding screen 800.

[0042] Furthermore, the bent deformation portion B of the heat conducting component is disposed between the first curved surface portion 31 and the second curved surface portion 32 .

[0043] refer to Figure 1 and Figure 2 In this embodiment, the heat-conducting component is disposed between the folding screen 800 and the first frame body 100 (the rotating shaft body 300 or the second frame body 200), wherein the first frame body 100, the rotating shaft body 300 and the second frame body 200 are located at the same height.

[0044] The heat conducting component includes a bending deformation portion B, which is bent and deformed as the folding screen 800 is folded. The bending deformation portion B of the heat conducting component is arranged between the first curved surface portion 31 and the second curved surface portion 32. The first curved surface portion 31 and the second curved surface portion 32 protect the bending deformation portion B from interference, and the bending deformation portion B can be bent and deformed frequently.

[0045] Furthermore, the heat conductive component also includes a first positioning portion A and a second positioning portion C, the bending deformation portion B connects the first positioning portion A and the second positioning portion C, the first positioning portion A is positioned and matched with the first frame 100, and the second positioning portion C is positioned and matched with the second frame 200.

[0046] refer to Figure 1 and Figure 3 In this embodiment, the first frame 100 includes a first curved portion 11 and a first connecting portion 12 connected to the first curved portion 11. The first connecting portion 12 is in the shape of a flat plate. Two first positioning columns 121 are formed on the upper surface of the first connecting portion 12. The second frame 200 includes a second curved portion 21 and a second connecting portion 22 connected to the second curved portion 21. The cross section of the second connecting portion 22 is L-shaped, and two second positioning columns 221 are formed on the upper surface of the second connecting portion 22.

[0047] The heat-conducting component includes a first positioning portion A, a bending deformation portion B, and a second positioning portion C, which are sequentially arranged. When the folding screen 800 is folded, the first positioning portion A is stationary relative to the first frame 100, and the first positioning portion A can be used to position the heat-conducting component; at the same time, the second positioning portion C is stationary relative to the second frame 200, and the second positioning portion C can be used to position the heat-conducting component.

[0048] The heat conducting assembly further includes a positioning member 600, and two U-shaped notches 61 are arranged opposite to each other at the edge of the positioning member 600. The two U-shaped notches 61 of the positioning member 600 can cooperate with the two first positioning columns 121, and the two U-shaped notches 61 of the positioning member 600 can also cooperate with the two second positioning columns 221.

[0049] One positioning member 600 is set at the first positioning portion A of the thermal conductive component, and the other positioning member 600 is set at the second positioning portion C of the thermal conductive component. The two positioning members 600 are respectively positioned and cooperated with the first frame body 100 and the second frame body 200, thereby limiting the freedom of the thermal conductive component along its length and width directions, and preventing it from undergoing significant bending deformation when the first frame body 100 or the second frame body 200 is closed or opened.

[0050] In some preferred embodiments, the first frame 100 includes a first connecting portion 12 , the heat conducting component is bent to form a first matching portion matching with the first connecting portion 12 , and the first matching portion is plug-fitted with the first connecting portion 12 .

[0051] refer to Figure 1 and Figure 3 In this embodiment, the first frame body 100 includes a first curved portion 11 and a first connecting portion 12 connected to the first curved portion 11, and the first curved portion 11 is rotatably matched with the rotating shaft body 300. The first connecting portion 12 is in the shape of a flat plate.

[0052] The heat conducting component includes a first positioning portion A, a bending deformation portion B and a second positioning portion C which are sequentially arranged. When the folding screen 800 is folded, the first positioning portion A is stationary relative to the first frame 100, and the first positioning portion A can be used to fix the heat conducting component.

[0053] The first positioning portion A is bent to form a first matching portion, which is roughly U-shaped. The first connecting portion 12 can be plugged into the first matching portion to achieve plug-in matching between the first matching portion and the first frame 100, which is beneficial for fixing the heat conduction component to the first frame 100.

[0054] In some preferred embodiments, the second frame 200 includes a second connecting portion 22 , the heat conducting component is bent to form a second matching portion that matches with the second connecting portion 22 , and the second matching portion is plug-fitted with the second connecting portion 22 .

[0055] refer to Figure 1 and Figure 3 In this embodiment, the second frame body 200 includes a second curved portion 21 and a second connecting portion 22 connected to the second curved portion 21, and the second curved portion 32 is rotatably matched with the rotating shaft body 300. The cross section of the second connecting portion 22 is L-shaped.

[0056] The heat conducting component includes a first positioning portion A, a bending deformation portion B and a second positioning portion C which are sequentially arranged. When the folding screen 800 is folded, the second positioning portion C is stationary relative to the second frame 200, and the second positioning portion C can be used to fix the heat conducting component.

[0057] The second positioning portion C is bent to form a second matching portion, and the cross section of the second matching portion is L-shaped, which is substantially the same as the cross section of the second connecting portion 22. The second matching portion is snap-fitted with the second connecting portion 22 to achieve snap-fitting with the second frame 200, which is beneficial for fixing the heat conducting component to the second frame 200.

[0058] In some preferred embodiments, the thermally conductive component is located above the first frame body 100 and the second frame body 200, and the thermally conductive component includes a flexible circuit board 400 and a flexible thermally conductive layer 500, and the first part 51 of the flexible thermally conductive layer 500 covers the surface of the flexible circuit board 400 away from the first frame body 100 and the second frame body 200.

[0059] refer to Figures 4 to 6 In this embodiment, the heat-conducting component includes a flexible circuit board 400 and a flexible heat-conducting layer 500. The flexible circuit board 400 includes a plurality of wires arranged side by side. The flexible circuit board 400 is used for information transmission and electrical connection. The flexible heat-conducting layer 500 can be a strip-shaped graphite sheet. The graphite sheet can conduct heat evenly in two directions, has good thermal conductivity and high cost performance, and is conducive to reducing production costs. The graphite sheet is a graphitized film obtained by a chemical method under high temperature and high pressure, which includes a polyimide film and a graphite material. The setting of the polyimide film is conducive to the bending deformation of the graphite sheet and improves the bending life of the graphite sheet.

[0060] The heat-conducting component is located above the first frame 100 and the second frame 200, the first part 51 of the flexible heat-conducting layer 500 covers the surface of the flexible circuit board 400 away from the first frame 100 and the second frame 200, and the first part 51 of the flexible heat-conducting layer 500 and the flexible circuit board 400 are bonded together by colloid. The above-mentioned arrangement is conducive to the thermal radiation or thermal convection of the flexible heat-conducting layer 500, and avoids the local temperature of the first frame 100 and the local temperature of the second frame 200 being too high.

[0061] Furthermore, the flexible thermally conductive layer 500 also includes a second part 52, which covers the surface of the flexible circuit board 400 close to the first frame body 100, and the second part 52 abuts against the surface of the first frame body 100 away from the flexible circuit board 400, thereby increasing the contact area between the flexible thermally conductive layer 500 and the first frame body 100, which is conducive to achieving thermal balance between the first folding component and the second folding component.

[0062] Furthermore, the flexible thermally conductive layer 500 also includes a third part 53, which covers the surface of the flexible circuit board 400 close to the second frame body 200, and the third part 53 abuts against the surface of the second frame body 200 away from the flexible circuit board 400, thereby increasing the contact area between the flexible thermally conductive layer 500 and the second frame body 200, which is conducive to achieving thermal balance between the first folding component and the second folding component.

[0063] It should be noted that electrical connectors (not marked) are provided at both ends of the flexible circuit board 400. One end of the flexible circuit board 400 is electrically connected to the electronic component arranged in the first folding component, and the other end of the flexible circuit board 400 is electrically connected to the electronic component arranged in the second folding component.

[0064] The above embodiments only illustrate the technical solutions of the application rather than limiting them. Although the present application is described in detail with reference to the embodiments, a person skilled in the art should understand that the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A folding screen device, characterized in that: include: A first folding assembly, the first folding assembly comprising a first frame, the first frame comprising a first bending portion; A second folding assembly, wherein the second folding assembly comprises a second frame body, the second frame body comprises a second curved portion, the first folding assembly and the second folding assembly are folded by a rotating shaft body, the rotating shaft body has an arch-shaped cross section, comprises a first curved portion and a second curved portion that are arranged opposite to each other, the axis of the first curved portion faces away from the first frame body, the axis of the second curved portion faces away from the second frame body, the first curved portion is rotationally matched with the first curved portion, and the second curved portion is rotationally matched with the second curved portion; A heat-conducting component is disposed on the rotating shaft body and conducts the first folding component and the second folding component, and a bending deformation portion of the heat-conducting component is disposed between the first curved surface portion and the second curved surface portion.

2. The folding screen device according to claim 1, characterized in that: The heat conduction component further includes a first positioning portion and a second positioning portion, the bending deformation portion connects the first positioning portion and the second positioning portion, the first positioning portion is positioned and matched with the first frame, and the second positioning portion is positioned and matched with the second frame.

3. The folding screen device according to claim 1, characterized in that: The heat conducting component is connected to the first frame and the second frame, and the heat conducting component is bent and deformed according to the rotation of the first frame and the second frame. The heat-conducting component includes a flexible circuit board and a flexible heat-conducting layer, wherein a first portion of the flexible heat-conducting layer covers a surface of the flexible circuit board away from the first frame body and the second frame body, wherein the flexible heat-conducting layer includes a polyimide film.

4. The folding screen device according to claim 3, characterized in that: The flexible heat-conductive layer further includes a second portion, the second portion covers a surface of the flexible circuit board close to the first frame body, and the second portion abuts against a surface of the first frame body away from the flexible circuit board.

5. The folding screen device according to claim 3, characterized in that: The flexible heat-conductive layer further includes a third portion, the third portion covers a surface of the flexible circuit board close to the second frame body, and the third portion abuts against a surface of the second frame body away from the flexible circuit board.

6. The folding screen device according to claim 1, characterized in that: The first frame includes a first connecting portion, the heat conducting component is bent to form a first matching portion matching with the first connecting portion, and the first matching portion is plug-matched with the first connecting portion.

7. The folding screen device according to claim 1, characterized in that: The second frame includes a second connecting portion, the heat conducting component is bent to form a second matching portion matching with the second connecting portion, and the second matching portion is plug-matched with the second connecting portion.

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