Flexible screen folding electronic terminal and hinge

Abstract

The invention provides a folding electronic terminal applied to a flexible screen and a hinge. The folding electronic terminal comprises a left side shell, a right side shell, the flexible screen and the hinge, the flexible screen is arranged on the inner side of the flexible screen folding electronic terminal and connected with the left side shell and the right side shell, and the left side shell and the right side shell are connected with the hinge so that the flexible screen can be folded and unfolded. The flexible screen folding electronic terminal is further provided with an elastic mechanism, when the flexible screen is unfolded, the flexible screen can be tensioned outwards so that the flexible screen can have certain prestress, better counter-acting force can be provided for touch operation, an operator is not prone to feeling the unsupported part on the back face of the flexible screen, the experience feeling of the touch operation is improved, and the user experience is improved. Residual creases in the middle of the flexible screen can be eliminated; moreover, the outward tensioning motion does not interfere with the folding and flattening motion of the flexible screen folding electronic terminal, and can eliminate the gap between the parts of the terminal, thereby improving the precision.

Description

Technical Field

[0001] The present invention relates to a flexible screen folding electronic terminal and a hinge. The flexible screen folding electronic terminal may be a mobile phone, a notebook computer, etc. Background Art

[0002] In flexible foldable electronic devices, the increasing demand for thinner designs inevitably leads to interference between the central flexible screen support plate and the hinge components, necessitating a hole in the central flexible screen support plate. Furthermore, in some flexible foldable electronic devices, when two movable support plates are used to support the central flexible screen, a gap exists between the two plates. All of these factors affect the user experience when touching the central flexible screen.

[0003] In addition, the flexible screen in the flexible screen folding electronic terminal will generally have a crease in the middle after being used for a period of time. When the flexible screen is flattened, this residual crease has a great impact on improving the user experience. Summary of the Invention

[0004] The first objective of the present invention is to provide a flexible screen foldable electronic terminal that can at least partially improve the touch operation experience in the middle of the flexible screen and at least alleviate the crease problem in the middle. To this end, the present invention adopts the following technical solutions: A flexible screen folding electronic terminal includes a left shell, a right shell, a flexible screen and a hinge; the flexible screen is arranged on the inner side of the flexible screen folding electronic terminal, and is respectively connected to the left shell and the right shell, and the left shell, the right shell and the hinge are connected to fold and flatten the flexible screen; it is characterized in that the flexible screen folding electronic terminal is also provided with an elastic mechanism, which can tension the flexible screen to both sides when the flexible screen folding electronic terminal is flattened.

[0005] The hinge of the flexible screen folding electronic terminal may be any one of the following hinges of flexible screen folding electronic terminals.

[0006] According to the second object of the present invention, the present invention provides a hinge for a flexible screen foldable electronic terminal, which can be used to tension the flexible screen when the flexible screen foldable electronic terminal is in a flat state, at least partially improving the touch operation experience of the middle part of the flexible screen, and can be applied to the above-mentioned flexible screen foldable electronic terminals. To this end, the present invention adopts the following technical solutions: The hinge of the flexible screen folding electronic terminal comprises a left connecting arm and a right connecting arm and a left sliding frame and a right sliding frame, wherein the left connecting arm and the right connecting arm are rotatably mounted on both sides of a middle support, and the left sliding frame and the right sliding frame are slidably connected to the left connecting arm and the right connecting arm respectively, and the left sliding frame and the right sliding frame can slide according to the rotation axis perpendicular to the left connecting arm and the rotation axis perpendicular to the right connecting arm respectively when the flexible screen folding electronic terminal is opened and folded, and the left sliding frame and the right sliding frame are respectively arranged at the parts connected to the left shell and the right shell of the flexible screen folding electronic terminal; it is characterized in that the hinge is respectively provided with an elastic top sliding frame mechanism on the left and right sides as the elastic mechanism according to claim 1, and when the hinge corresponds to the flexible screen folding electronic terminal being in a flattened state, the left and right elastic top sliding frame mechanisms respectively press the left sliding frame and the right sliding frame in the direction away from the middle support.

[0007] On the basis of adopting the above technical solution, the present invention may also adopt the following further technical solution, or use the further technical solution in combination: The mechanism of the elastic lifting sliding frame is arranged between the left connecting arm and the left sliding frame and between the right connecting arm and the right sliding frame.

[0008] The hinge is also provided with a left push-pull link and a right push-pull link, and the left push-pull link and the right push-pull link are rotatably mounted on both sides of the middle support, and the left sliding frame and the right sliding frame are movably connected to the second ends of the left push-pull link and the right push-pull link respectively. The connection structure of the movably connected structure adopts the cooperation of a waist-shaped hole and an axis, and the left sliding frame and the right sliding frame are respectively provided with the waist-shaped holes, and the length direction of the waist-shaped holes of the left sliding frame and the right sliding frame is consistent with the sliding direction of the left sliding frame and the right sliding frame respectively.

[0009] The mechanism of the elastic lifting sliding frame is arranged between the left push-pull connecting rod and the left sliding frame and between the right push-pull connecting rod and the right sliding frame.

[0010] The left push-pull connecting rod and the right push-pull connecting rod are respectively provided with cams, which act on the elastic mechanism when the left push-pull connecting rod and the right push-pull connecting rod rotate.

[0011] The elastic mechanism adopts an elastic element, or is a mechanism composed of an elastic element and a mechanical connection structure. The selection range of the elastic element includes a wire spring, a spring, a disc spring, and a rubber block. The wire spring is configured as a compression spring or a torsion spring.

[0012] The cam is set at the second end of the left push-pull link and the right push-pull link, so that the cam rotates synchronously with the connected push-pull link with the rotation axis of the second end of the push-pull link as the axis, and the left sliding frame and the right sliding frame are provided with a accommodating part of the elastic mechanism, and the accommodating part is provided with an elastic mechanism action part facing the cam surface, and the elastic mechanism is located between the action part and the cam surface.

[0013] The middle support includes a fixed support and a left movable support and a right movable support respectively located on the left and right sides of the fixed support, the left movable support and the right movable support are slidably connected to the fixed support, the sliding paths of the left movable support and the right movable support are perpendicular to the rotation axis of the left connecting arm and the rotation axis of the right connecting arm respectively, the left connecting arm and the right connecting arm are rotatably mounted on the left movable support and the right movable support respectively, the left push-pull connecting rod and the right push-pull connecting rod are rotatably mounted on the left movable support and the right movable support respectively; the mechanism of the elastic top sliding frame is arranged between the fixed support and the left movable support and between the fixed support and the right movable support.

[0014] The fixed support is respectively provided with a guide track and a limiting structure of the left movable support and a guide track and a limiting structure of the right movable support.

[0015] The first end of the push-pull connecting rod and the middle support are connected through a virtual center rotation connection structure of the arc slider and the arc guide groove.

[0016] A synchronous reverse rotation connection structure is connected between the left connecting arm and the right connecting arm; During the rotation of the flexible screen folding electronic terminal from folding to flattening, the left sliding frame and the right sliding frame slide toward the rotation axis close to the left connecting arm and the rotation axis of the right connecting arm respectively. During the rotation of the flexible screen folding electronic terminal from flattening to folding, the left sliding frame and the right sliding frame slide toward the rotation axis away from the left connecting arm and the rotation axis of the right connecting arm respectively.

[0017] The left side sliding frame and the left side connecting arm are movably connected to the left side movable support plate in the middle of the flexible screen, and the right side sliding frame and the right side connecting arm are movably connected to the right side movable support plate in the middle of the flexible screen.

[0018] Due to the adoption of the technical solution of the present invention, the present invention can tension the flexible screen outward when the flexible screen is flattened so that it has a certain prestress, which can have a better reaction force for touch operation and make it difficult for the operator to feel the unsupported part on the back of the flexible screen, thereby improving the experience of touch operation and also helping to eliminate the residual crease in the middle of the flexible screen; moreover, this outward tensioning movement does not interfere with the folding and flattening movement of the flexible screen folding electronic terminal, and can eliminate the gaps between its parts, thereby improving precision. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of an embodiment of a flexible screen foldable electronic terminal according to the present invention when viewed from the back in a flattened state.

[0020] Figure 2 This is an exploded view of the structure of an embodiment of a flexible screen foldable electronic terminal of the present invention.

[0021] Figure 3 This is a cross-sectional view of an embodiment of a flexible screen foldable electronic terminal according to the present invention in a flattened state.

[0022] Figure 4 This is an exploded view of the structure of the hinge of the flexible screen folding electronic terminal of the present invention.

[0023] Figure 5 This is a cross-sectional view of the hinge of the flexible screen folding electronic terminal of the present invention in the flattened state.

[0024] Figures 6 to 9 They are schematic diagrams of the back side of the flexible screen folding electronic terminal hinge in the corresponding flattened state using different elastic element implementation methods of the present invention.

[0025] Figure 10 This is a cross-sectional view of an embodiment of a flexible screen foldable electronic terminal according to the present invention in a folded state.

[0026] Figure 11 This is a structural explosion diagram of another embodiment of the hinge of a flexible screen folding electronic terminal of the present invention.

[0027] Figure 12 and Figure 13 They are Figure 11 The hinge shown uses different elastic element implementations, and is a schematic back view in the flattened state.

[0028] Figure 14 This is a structural explosion diagram of the third embodiment of the hinge for a flexible screen folding electronic terminal of the present invention.

[0029] Figure 15 This is a schematic diagram of a flexible screen folding electronic terminal using the third embodiment of the hinge of the present invention, when viewed from the front in a flattened state.

[0030] Figure 16 and Figure 17 They are Figure 15 AA section view and BB section view.

[0031] Figure 18 This is a cross-sectional view of the fixed support and movable support of the third embodiment of the hinge for a flexible screen folding electronic terminal of the present invention.

[0032] Figure 19 This is a schematic diagram of a flexible screen folding electronic terminal using the third embodiment of the hinge of the present invention, when viewed from the back in a flattened state. DETAILED DESCRIPTION

[0033] Example 1, with reference to Figures 1-10 . The hinge of the flexible screen folding electronic terminal provided by the present invention includes a left connecting arm 11 and a right connecting arm 12 and a left sliding frame 21 and a right sliding frame 22. The left connecting arm 11 and the right connecting arm 12 are rotatably mounted on both sides of the middle support 200, and the middle support 200 is fixed in the middle shell of the flexible screen folding electronic terminal. The flexible screen folding electronic terminal includes a left shell 201, a right shell 202, a flexible screen 300 and the hinge. The left shell 201 and the right shell 202 contain flexible screen support plates; the flexible screen 300 is arranged on the inner side of the flexible screen folding electronic terminal and is respectively connected to the left shell 201 and the right shell 202. The left shell 201, the right shell 202 and the hinge of the present invention are connected to fold and flatten the flexible screen. The left sliding frame 21 and the right sliding frame 22 are respectively provided with connection parts with the left shell 201 and the right shell 202 , such as screw connection parts 210 and 220 , which are connected with the left shell 201 and the right shell 202 .

[0034] The left sliding frame 21 and the right sliding frame 22 are respectively slidably connected to the left connecting arm 11 and the right connecting arm 12. The left sliding frame 21 and the right sliding frame 22 are respectively provided with slide rails 211 and 221 that cooperate with the left connecting arm 11 and the right connecting arm 12. The left sliding frame 21 and the right sliding frame 22 can slide according to the rotation axis perpendicular to the left connecting arm 11 and the rotation axis perpendicular to the right connecting arm 12 when the flexible screen folding electronic terminal is opened and folded, respectively. The figure numbers 110 and 120 are the axes of the left connecting arm 11 and the right connecting arm 12, respectively.

[0035] The hinge is provided with elastic mechanisms on the left and right sides as mechanisms of the elastic top sliding frame. When the corresponding flexible screen folding electronic terminal is in a flattened state, the mechanisms of the elastic top sliding frames on the left and right sides respectively press the left sliding frame 21 and the right sliding frame 22 away from the middle support 200, and thereby cause the left shell 201 and the right shell 202 to generate additional movement away from each other, thereby tensioning the flexible screen, giving it a certain prestress, and having a better reaction force for touch operation, making it difficult for the operator to feel the unsupported part on the back of the flexible screen, thereby improving the touch operation experience.

[0036] The hinge is also provided with a left push-pull link 41 and a right push-pull link 42, and the left push-pull link 41 and the right push-pull link 42 are rotatably installed on both sides of the middle support 200, and the left sliding frame 21 and the right sliding frame 22 are respectively movably connected to the second ends of the left push-pull link 41 and the right push-pull link 42, wherein the movably connected connection structure adopts a matching relationship between a waist-shaped hole 24 and a shaft 43, and the left sliding frame 21 and the right sliding frame 22 are respectively provided with the waist-shaped holes 24, which can give full play to the tensioning effect of the mechanism of the elastic top sliding frame on the flexible screen 300, and the width of the waist-shaped holes 24 of the left sliding frame 21 and the right sliding frame 22 matches the diameter of the shaft 43, and the length direction of the waist-shaped holes 24 is consistent with the sliding direction of the left sliding frame 21 and the right sliding frame 22. The left push-pull link 41 and the right push-pull link 42 are connected to the middle support 200 through a virtual center rotation connection structure 40 composed of an arc slider and an arc guide groove. The rotation center is located above the support surface height of the flexible screen 300 when the flexible screen folding electronic terminal is flattened.

[0037] In this embodiment, the mechanism of the elastic top sliding frame is arranged between the left push-pull connecting rod 41 and the left sliding frame 21 and between the right push-pull connecting rod 42 and the right sliding frame 22. It can not only tension the flexible screen 300, but also eliminate the gap between the parts from the middle support 200 to the left sliding frame 21 and the right sliding frame 22, thereby reducing shaking and improving quality.

[0038] The left push-pull link 41 and the right push-pull link 42 are respectively provided with a cam 6 , which acts on the elastic mechanism when the left push-pull link 41 and the right push-pull link 42 rotate.

[0039] In this embodiment, the cam 6 is provided at the second end of the left push-pull link 41 and the right push-pull link 42, so that the cam 6 rotates synchronously with the connected push-pull link with the rotation axis of the second end of the push-pull link (i.e., the shaft 43) as the axis, and the left sliding frame 21 and the right sliding frame 22 are provided with accommodating parts 211 and 221 of the elastic mechanism, and the accommodating parts are provided with an elastic mechanism action part 23 corresponding to the cam surface, and the elastic mechanism is located between the action part 23 and the cam surface.

[0040] like Figure 6-9 As shown, the elastic mechanism can be an elastic element, and the selection range includes a wire spring 3b, a spring 3a, a disc spring 3d, and a rubber block 3c. The wire spring can be configured as a compression spring or a torsion spring. Alternatively, the elastic mechanism can be configured as a mechanism with an elastic element, such as an elastic arm.

[0041] The left connecting arm 11 and the right connecting arm 12 are connected with a synchronous reverse rotation connection structure 10 , which may be a gear meshing connection structure, so that the housings 201 and 202 on both sides rotate synchronously and reversely.

[0042] The left movable support plate 51 in the middle of the flexible screen is movably connected between the left sliding frame 21 and the left connecting arm 11, and the right movable support plate 52 in the middle of the flexible screen is movably connected between the right sliding frame 22 and the right connecting arm 12. The left movable support plate 51 in the middle of the flexible screen and the right movable support plate 52 in the middle of the flexible screen rotate to a position supporting the flexible screen 300 when the flexible screen folding electronic terminal is flattened, such as Figure 3 As shown; when the flexible screen folding electronic terminal is folded, it rotates more than the left shell 201 and the right shell 202 to form a space for the middle bulging part 301 when the flexible screen is folded.

[0043] Example 2, reference Figure 11-14 . Please also refer to Figures 1-10 .

[0044] In this embodiment, the elastic top sliding frame mechanism is arranged between the left connecting arm 11 and the left sliding frame 21, and between the right connecting arm 12 and the right sliding frame 22. The left sliding frame 21 and the right sliding frame 22 are provided with accommodating portions 211 and 221 for the elastic top sliding frame mechanism. The left sliding frame 21 and the right sliding frame 22 are respectively provided with portions 213 and 223 open to the rear end, and the slide rails 212 and 222 and accommodating portions 211 and 221 are provided at the open portions 213 and 223. The accommodating portions 211 and 221 are provided with active portions corresponding to the end portions 13 of the connecting arm. The elastic top sliding frame mechanism is located between the active portions and the end portions 13 of the connecting arm, which can not only tension the flexible screen, but also eliminate the gap between the parts from the middle support 200 to the sliding frame, reducing shaking and improving quality.

[0045] The hinge is also provided with a left push-pull link 41 and a right push-pull link 42, and the left push-pull link 41 and the right push-pull link 42 are rotatably installed on both sides of the middle support 200, and the left sliding frame 21 and the right sliding frame 22 are respectively movably connected to the second ends of the left push-pull link 41 and the right push-pull link 42, wherein the movably connected connection structure adopts a matching relationship between a waist-shaped hole 24 and a shaft 43, and the left sliding frame 21 and the right sliding frame 22 are respectively provided with the waist-shaped holes 24, which can give full play to the tensioning effect of the mechanism of the elastic top sliding frame on the flexible screen 300, and the width of the waist-shaped holes 24 of the left sliding frame 21 and the right sliding frame 22 matches the diameter of the shaft 43, and the length direction of the waist-shaped holes 24 is consistent with the sliding direction of the left sliding frame 21 and the right sliding frame 22. The left push-pull link 41 and the right push-pull link 42 are connected to the middle support 200 through a virtual circle center rotation connection structure composed of an arc slider and an arc guide groove. The rotation center is located above the support surface height of the flexible screen when the flexible screen folding electronic terminal is flattened.

[0046] like Figure 12 、 13 In this embodiment, the elastic mechanism utilizes a wire spring 3e configured as a torsion spring and a wire spring 3f configured as a compression spring. When configured as a compression spring, spring mounting posts can be provided at the ends of the left and right connecting arms 11 and 12, or at the active portion 23. When configured as a torsion spring, the torsion spring can be mounted at the active portion 23 (e.g., mounting post 23e), with the two torsion spring legs mating with the connecting arm ends 13.

[0047] The other parts of the present invention are the same as those in Example 1.

[0048] Example 3, reference Figures 15-19 . Please also refer to Figures 1-14 .

[0049] In this embodiment, the middle support includes a fixed support 203 and a left movable support 2031 and a right movable support 2032 located on the left and right sides of the fixed support. The left movable support 2031 and the right movable support 2032 are slidably connected to the fixed support 203, and the left movable support 2031 and the right movable support 2032 are respectively supported on the fixed support 203. The sliding paths of the left movable support 2031 and the right movable support 2032 are respectively perpendicular to the rotation axis of the left connecting arm 11 and the rotation axis of the right connecting arm 12. The left connecting arm 11 and the right connecting arm 12 are respectively perpendicular to the rotation axis of the left connecting arm 11 and the right connecting arm 12. The side connecting arms 12 are rotatably mounted on the left movable support 2031 and the right movable support 2032, respectively. Their rotational connection structure is the same as that of Example 1, wherein reference numerals 110 and 120 represent the axes of the left connecting arm 11 and the right connecting arm 12, respectively. The first ends of the left push-pull link 41 and the right push-pull link 42 are rotatably mounted on the left movable support 2031 and the right movable support 2032, respectively. They are connected via a virtual center rotation connection structure 40 formed by an arc slider and an arc guide groove. Their rotational centers are located above the height of the support surface of the flexible screen when the flexible screen folding electronic terminal is flattened. Reference numerals 2033 and 2034 denote cover plates fixed to the left movable support 2031 and the right movable support 2032, respectively. These cover plates 2033 and 2034 can be connected to the left movable support 2031 and the right movable support 2032, respectively, via screws.

[0050] The left sliding frame 21 and the right sliding frame 22 are movably connected to the second ends of the left push-pull connecting rod 41 and the right push-pull connecting rod 42 respectively, wherein the movably connected connection structure can adopt a rotating connection structure in which a hole and a shaft 45 cooperate.

[0051] The elastic support mechanism is located between the fixed support 203 and the left movable support 2031, and between the fixed support 203 and the right movable support 2032. By pushing the movable support, the push-pull connecting rod and the sliding bracket slide together. Receiving spaces 204 for the elastic support mechanism can be located on the left and right sides of the fixed support 203, or on the left movable support 2031 and the right push-pull connecting rod 42. The fixed support 203 is fixed to the middle housing of the flexible screen foldable electronic terminal.

[0052] The mechanism of the elastic top sliding frame adopts an elastic element, and in this embodiment, a spring piece 3g is adopted.

[0053] The fixed support 203 is respectively provided with a guide track 2051 and a limiting structure of the left movable support 2031 and a guide track 2052 and a limiting structure of the right movable support 2032. The limiting structure includes a rear support and limiting structure 2061, a lower support and limiting structure 2062 and a front limiting structure 2063.

[0054] The above description is only a specific embodiment of the present invention, but the structural features of the present invention are not limited thereto. Any changes or modifications made by any technician in this field within the field of the present invention are included in the protection scope of the present invention.

[0055] It should be noted that the terms "including" and "having" and any variations thereof in the specification and claims of the present invention and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "installed", "set", "provided with", "connected", "connected", and "socketed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements or components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0056] In the description of the present invention, it should be understood that terms such as "one end," "the other end," "outer side," "inner side," "horizontal," "end," "length," "outer end," "left," and "right" indicate positions or locations based on those shown in the accompanying drawings. These terms are intended solely to facilitate and simplify the description of the present invention and are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. The terms "first" and "second" are used solely for brevity and are not intended to indicate or imply relative importance.

Claims

1. A flexible screen foldable electronic terminal, comprising a left housing, a right housing, a flexible screen, and a hinge; the flexible screen is disposed on the inner side of the flexible screen foldable electronic terminal and is connected to the left housing and the right housing, respectively; the left housing, the right housing, and the hinge are connected to enable the flexible screen to be folded and flattened; characterized in that: The flexible screen folding electronic terminal is further provided with an elastic mechanism, which can tension the flexible screen toward both sides when the flexible screen folding electronic terminal is flattened.

2. A hinge for a flexible screen folding electronic terminal, comprising a left connecting arm and a right connecting arm and a left sliding frame and a right sliding frame, wherein the left connecting arm and the right connecting arm are rotatably mounted on both sides of a middle support, and the left sliding frame and the right sliding frame are slidably connected to the left connecting arm and the right connecting arm respectively, and the left sliding frame and the right sliding frame can slide according to the rotation axis perpendicular to the left connecting arm and the rotation axis perpendicular to the right connecting arm respectively when the flexible screen folding electronic terminal is opened and folded, and the left sliding frame and the right sliding frame are respectively arranged at the parts connected to the left shell and the right shell of the flexible screen folding electronic terminal; characterized in that The hinge is provided with elastic top sliding frame mechanisms on the left and right sides respectively as the elastic mechanism described in claim 1. When the hinge is in a flattened state corresponding to the flexible screen folding electronic terminal, the elastic top sliding frame mechanisms on the left and right sides respectively press the left sliding frame and the right sliding frame away from the middle support.

3. The hinge of a flexible screen foldable electronic terminal according to claim 2, characterized in that: The mechanism of the elastic lifting sliding frame is arranged between the left connecting arm and the left sliding frame and between the right connecting arm and the right sliding frame.

4. The hinge of a flexible screen foldable electronic terminal according to claim 2, characterized in that: The hinge is also provided with a left push-pull link and a right push-pull link, and the left push-pull link and the right push-pull link are rotatably mounted on both sides of the middle support, and the left sliding frame and the right sliding frame are movably connected to the second ends of the left push-pull link and the right push-pull link respectively. The connection structure of the movably connected structure adopts the cooperation of a waist-shaped hole and an axis, and the left sliding frame and the right sliding frame are respectively provided with the waist-shaped holes, and the length direction of the waist-shaped holes of the left sliding frame and the right sliding frame is consistent with the sliding direction of the left sliding frame and the right sliding frame respectively.

5. The hinge of a flexible screen foldable electronic terminal according to claim 4, characterized in that: The mechanism of the elastic lifting sliding frame is arranged between the left push-pull connecting rod and the left sliding frame and between the right push-pull connecting rod and the right sliding frame.

6. The hinge of a flexible screen foldable electronic terminal according to claim 5, characterized in that: The left push-pull connecting rod and the right push-pull connecting rod are respectively provided with cams, which act on the elastic mechanism when the left push-pull connecting rod and the right push-pull connecting rod rotate.

7. The hinge of a flexible screen foldable electronic terminal according to claim 2, characterized in that: The elastic mechanism adopts an elastic element, or is a mechanism composed of an elastic element and a mechanical connection structure. The selection range of the elastic element includes a wire spring, a spring, a disc spring, and a rubber block. The wire spring is configured as a compression spring or a torsion spring.

8. The hinge of a flexible screen foldable electronic terminal according to claim 6, characterized in that: The cam is set at the second end of the left push-pull link and the right push-pull link, so that the cam rotates synchronously with the connected push-pull link with the rotation axis of the second end of the push-pull link as the axis, and the left sliding frame and the right sliding frame are provided with a accommodating part of the elastic mechanism, and the accommodating part is provided with an elastic mechanism action part corresponding to the cam surface, and the elastic mechanism is located between the action part and the cam surface.

9. The hinge of a flexible screen foldable electronic terminal according to claim 4, characterized in that: The middle support includes a fixed support and a left movable support and a right movable support respectively located on the left and right sides of the fixed support, the left movable support and the right movable support are slidably connected to the fixed support, the sliding paths of the left movable support and the right movable support are respectively perpendicular to the rotation axis of the left connecting arm and the rotation axis of the right connecting arm, the left connecting arm and the right connecting arm are respectively rotatably mounted on the left movable support and the right movable support, and the left push-pull connecting rod and the right push-pull connecting rod are respectively rotatably mounted on the left movable support and the right movable support; The mechanism of the elastic top sliding frame is arranged between the fixed support and the left movable support and between the fixed support and the right movable support.

10. The hinge of a flexible screen foldable electronic terminal according to claim 4, characterized in that: The first end of the push-pull connecting rod and the middle support are connected through a virtual center rotation connection structure of the arc slider and the arc guide groove.

11. The hinge of a flexible screen foldable electronic terminal according to claim 2, characterized in that: A synchronous reverse rotation connection structure is connected between the left connecting arm and the right connecting arm.

12. The hinge of a flexible screen foldable electronic terminal according to claim 2, characterized in that: During the rotation of the flexible screen folding electronic terminal from folding to flattening, the left sliding frame and the right sliding frame slide toward the rotation axis close to the left connecting arm and the rotation axis of the right connecting arm respectively. During the rotation of the flexible screen folding electronic terminal from flattening to folding, the left sliding frame and the right sliding frame slide toward the rotation axis away from the left connecting arm and the rotation axis of the right connecting arm respectively.

13. The hinge of a flexible screen foldable electronic terminal according to claim 2, characterized in that: The left side sliding frame and the left side connecting arm are movably connected to the left side movable support plate in the middle of the flexible screen, and the right side sliding frame and the right side connecting arm are movably connected to the right side movable support plate in the middle of the flexible screen.

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