Crease-free foldable screen with single-axis sliding hinge

Abstract

The crease-free folding screen single-axis sliding hinge consists of a support body 1 and its materials, structure, and accessories. The main body of the support body 1 is shaped like a semi-circular arc "U"-shaped groove 2 with an open top and sealed ends. A fixed flat wing 3 extends outward from the left side of the "U"-shaped groove 2. An arc-shaped sliding plate 7 is provided, which can pass through the arc-shaped sliding track 6 inside the arc-shaped cover layer 4. A movable wing 9 is provided on the arc-shaped sliding plate 7. Because the OLED flexible screen 14 bends into the "U"-shaped groove 2 when folding inward, the bending stress is fully stored, and when it moves outward, the stress is completely released and flattened, thus fundamentally eliminating the hidden dangers of creases and even damage caused by the "hard-on-hard" contact between the traditional hinge and the screen. This invention features a flexible structure within the screen space, allowing for free stress release and a built-in sliding and hovering function. It opens and closes evenly, exhibiting characteristics such as smooth twisting, seamless folding, light weight, low cost, long lifespan, good damping feel, and resistance to drops, impacts, water, and dust.

Description

Technical Field

[0001] The crease-free folding screen single-axis sliding hinge is applicable to the field of electronic display folding devices. Background Technology

[0002] Existing foldable screens all use rigid-top hard metal hinges, which are manufactured with precision, have complex transmission mechanisms, many parts, high costs, heavy weight, and thick thickness. Creases and wrinkles inevitably appear at the folding points. The hinges, which rely on a large number of parts, do not provide good and even opening and closing support, and are also prone to deformation or screen damage due to uneven force. Their fragility also makes repair costs high.

[0003] Purpose of the invention

[0004] The purpose of this invention is to design a flexible folding screen hinge with an inner groove structure that produces no creases, is lightweight, low-cost, drop-resistant, and provides good, uniform opening and closing support and screen protection. Summary of the Invention

[0005] This invention comprises a support body 1, its material, structure, and accessories. The main body of the support body 1 is shaped like a semi-circular arc "U"-shaped groove 2 with an open top and sealed ends. It is long and narrow, with the opening on all four sides being flat and at the same horizontal plane. A fixed flat wing 3 extends outward from the left side of the "U"-shaped groove 2. The longitudinal length of the fixed flat wing 3 is consistent with the longitudinal length of the "U"-shaped groove 2. On the outer arc surfaces on both sides of the "U"-shaped groove 2, an arc-shaped sealing layer 4 is formed, closely matching its curvature. The arc-shaped sealing layer 4 surrounds three sides of the "U"-shaped groove 2, forming a plug; leaving only an open opening 5 extending outward from the arc. Thus, an arc-shaped slide 6 is formed, consisting of an arc-shaped cover layer 4, an opening 5, and the outer wall of a U-shaped groove 2. An arc-shaped slide plate 7 is made that can pass through the arc-shaped slide 6. The width of the arc-shaped slide plate 7 is close to the length of the U-shaped groove 2. The arc length of the arc-shaped slide 6 is close to the arc length of the U-shaped groove 2. A continuous pivot 8 is made on the outer side of the arc-shaped slide plate 7 along its longitudinal direction. A movable wing 9 is made along the outer edge of the pivot 8. The width and length of the movable wing 9 are approximately equal to the left and right fixed flat wings 3; thus, the movable wings 9 are connected by the pivot 8 to form a... A movable body. The fixed flat wing 3 is fixed to the edge of the fixed flat wing base plate 10 within the middle half of the display device's fuselage via several flat wing fixing holes 11. The movable wing 9 is fixed to the edge of the movable wing fixing base plate 12 within the other middle half of the display device's fuselage via several movable wing fixing holes 13. The longitudinal length of the movable wing 9 is approximately equal to the width of the movable wing fixing base plate 12. The fixed flat wing fixing base plate 10 and the movable wing fixing base plate 12 are aligned and fixed to the fixed flat wing 3 and the movable wing 9; thus, the "U"-shaped groove 2 and its supporting body 1 are fixed... The fixed wing 3 and the movable wing 9 are hinged to the fixed wing fixing base plate 10 and the movable wing fixing base plate 12, which are opposite to the two halves of the display device, thus forming the basic support structure of the hinge. The "U"-shaped groove 2 is approximately a semi-circular arc, which is the "screen-accommodating space" where the OLED flexible screen 14 enters in a teardrop shape when it is bent inward. The width of the OLED flexible screen 14 is exactly the same as the width of the inner wall of the "U"-shaped groove 2, so it fits snugly and moves in and out of the "U"-shaped groove 2. Because the OLED flexible screen 14 bends inward when it is bent... The curved surface R, when inserted into the U-shaped groove 2, does not suffer from the stress constraint common in conventional hinge screens where materials are piled up and the screen lands hard. This allows the bending stress of the inner bending arc R of the OLED flexible screen 14 to be fully contained, and the stress is completely released upon exiting the groove, restoring it to a flat state. On the outer wall of the U-shaped groove 2, there are neatly arranged U-shaped groove outer surface raised dots 15, evenly distributed across the entire curved surface. On the curved surface of the curved sliding plate 7, opposite to the U-shaped groove outer surface raised dots 15, there are neatly arranged curved plate raised dots 16, evenly distributed across the entire curved surface.The raised, slightly convex dotted surface 16 of the curved plate, along with the raised, concave surface 15 of the "U"-shaped groove, creates a slight frictional effect, allowing the curved slide plate 7 to stop at any time within the curved track 6 due to the frictional resistance generated between the raised, concave surface 15 of the "U"-shaped groove and the raised, concave surface 16 of the curved plate. A "U"-shaped groove 17, approximately 1.5 mm wide, is located at the center of the longitudinal bottom of the "U"-shaped groove 2. A sealing layer groove 18, approximately 1.5 mm wide, is located at the center of the longitudinal bottom of the curved sealing layer 4. A slide plate groove 19, approximately 1.5 mm wide, is located at the center of the longitudinal bottom of the curved slide plate 7. This indicates that the "U"-shaped groove 17 and the sealing layer groove 18 can be aligned and overlapped, while when the slide plate groove 19 is also located at the bottom of the curved plate, all three grooves overlap, are open, and are exposed. The fixed wing housing 20, which connects to the fixed wing 3 and the display device within half of the fuselage, and the movable wing housing 21, which connects to the movable wing 9 and the display device within half of the fuselage, have the following characteristics: the tail length of the fixed wing housing 20 does not exceed the edge of the nearby arc-shaped cover layer 4 bottom groove 18. The tail length of the movable wing housing 21, however, extends beyond the near boundary of the exposed arc-shaped cover layer 4 bottom groove 18, covering it and resting precisely at the end of the fixed wing housing 20's tail. An inverted hook 22 is formed at the tail of the movable wing housing 21. When the "U"-shaped groove bottom groove 17, the cover layer bottom groove 18, and the sliding plate bottom groove 19 overlap vertically and are fully connected, the inverted hook 22 slides into the groove due to the elasticity of the movable wing housing 21's material, while the inverted hook pushes upwards towards the underside of the "U"-shaped groove 2. A covering membrane 23 is also provided. Covering the top of the "U"-shaped groove 2, the cover film 23 is approximately the same width as the "U"-shaped groove 2 and the LED flexible screen 14, allowing them to fit inside the "U"-shaped groove 2. The covering film 23 adjusts its tightness according to the arcuate tension of the fixed flat wing 3 and the movable wing 9: when the OLED flexible screen 14 bends into the "U"-shaped groove 2, the covering film 23 is relatively loose, and the OLED flexible screen 14 gently presses against the covering film 23 as it enters the groove; when the OLED flexible screen 14 bends out of the "U"-shaped groove 2, the covering film 23 is relatively stretched and tightened, with a sharp increase in elasticity, which also helps to support and straighten the OLED flexible screen 14. A liquid-filled capsule 24, approximately the same size as the bottom half of the space inside the "U"-shaped groove 2, is also included. When the OLED flexible screen 14 bends into the "U"-shaped groove 2, the liquid filling capsule 24 is at the bottom and is only gently touched, overflowing the "U"-shaped groove 2 and being in a relatively soft state.When the outer shell 21 of the movable wing is subjected to force, the OLED flexible screen 14 bends out of the "U"-shaped groove 2, bringing the inverted hook 22 into and locking it in the overlapping "U"-shaped groove bottom groove 17, the sealing layer bottom groove 18, and the slide plate bottom groove 19. The inverted hook 22 then pushes upwards, and the liquid-filled capsule 24 is squeezed by the inserted foreign object. The "U"-shaped groove 2 is then filled with the liquid-filled capsule 24, or is in a saturated state. This supports the OLED flexible screen 14 so that it is lifted at the weakest point of the fold, preventing it from collapsing or deforming due to touch and affecting its flatness. On both sides of the curved end opposite the pivot 8 of the curved slide plate 7, a first elastic limiting piece 25 and a second elastic limiting piece 26, integrally formed with the curved slide plate 7, are excavated. The process is designed to have a certain outward expansion force within the arc-shaped track 6. This force is suppressed within the arc-shaped track 6, but when in a free state, the elastic force is released, causing the first elastic limiting piece 25 and the second elastic limiting piece 26 to extend outwards. A first elastic limiting square hole 27 and a second elastic limiting square hole 28 are respectively opened on the lower edges of the opening 5 on both sides of the arc-shaped cover layer 4. When the arc-shaped slide plate 7 reaches its root position, the first elastic limiting piece 25 and the second elastic limiting piece 26 fall precisely into the corresponding first elastic limiting square hole 27 and second elastic limiting square hole 28, releasing the elastic force and simultaneously locking the arc-shaped slide plate 7 within the arc-shaped track 6, thus preventing it from sliding off the track. A thin, wear-resistant coating layer 29 is wrapped around the arc-shaped slide plate 7 using a heat-sealing process to increase the friction when the arc-shaped slide plate 7 slides within the arc-shaped track 6, resulting in a more refined hovering effect and opening / closing feel.

[0006] This invention features a flexible structure within the screen space, allowing for free stress release and a built-in mid-sliding suspension function. It opens and closes evenly, exhibiting characteristics such as smooth twisting, seamless folding, light weight, low cost, long lifespan, good damping feel, and resistance to drops, impacts, and water and dust. Attached Figure Description

[0007] Figure 1 This is the front sectional view of the present invention.

[0008] Figure 2 It is a set of drawings including the top view, front view, and right view of the supporting body, and the top view and front view of the liquid-filled capsule.

[0009] Figure 3 It is a set of top-view, front-view, and right-view diagrams of the curved skateboard, as well as a diagram of the coating of the curved skateboard.

[0010] Figure 4 This is a schematic diagram of the closed state of the present invention.

[0011] Figure 5 This is a schematic diagram of the semi-open and hovering state of the present invention.

[0012] Figure 6This is a schematic diagram of the fully open state of the present invention.

[0013] Figure 7 This is a partial alignment view of the spring-loaded limiting plate and the spring-loaded limiting square hole. Detailed Implementation

[0014] Example: This example consists of a support body 1, its material, structure, and accessories. The support body 1 is made of metal or high-strength rigid synthetic plastic, possessing the characteristics of rigidity, toughness, ultra-thinness, and light weight. The main body of the support body 1 is shaped like a semi-circular arc "U"-shaped groove 2 with an open top and sealed ends. It is long and narrow, with the opening on all four sides being flat and at the same horizontal plane. A fixed flat wing 3 extends outward from the left side of the "U"-shaped groove 2. The fixed flat wing 3 is horizontally aligned with the opening surface of the "U"-shaped groove 2. The longitudinal length of the fixed flat wing 3 is consistent with the longitudinal length of the "U"-shaped groove 2. On the outer arc surfaces on both sides of the "U"-shaped groove 2, an arc-shaped sealing layer 4 closely matching its curvature is formed. The arc-shaped sealing layer 4 surrounds three sides of the "U"-shaped groove 2, forming a plug; leaving only an open opening 5 extending outward from the arc. The open opening 5 is exposed, its length being approximately equal to that of the U-shaped groove 2, with an opening width of about 1 mm, extending to the upper opening plane of the U-shaped groove 2. This forms an arc-shaped slide 6 composed of the arc-shaped sealing layer 4, the open opening 5, and the outer wall of the U-shaped groove 2. An arc-shaped sliding plate 7 is provided, capable of passing through the arc-shaped slide 6. The width of the arc-shaped sliding plate 7 is close to the length of the U-shaped groove 2, allowing for arc-shaped sliding within the arc-shaped slide 6. The arc length of the arc-shaped slide 6 is close to the arc length of the U-shaped groove 2. A continuous pivot 8 is formed along the outer side of the arc-shaped sliding plate 7 in the direction of its movement. A movable wing 9 is formed along the outer edge of the pivot 8. The width and length of the movable wing 9 are approximately equal to those of the left and right fixed wings 3; thus, the movable wing 9 is connected to the fixed wing 3 via a pivot 8, forming a movable body; the movable wing 9 can rotate freely from 0 to 180 degrees. The fixed wing 3 is fixed to the edge of the fixed wing base plate 10 within the middle half of the display device via several wing fixing holes 11. The longitudinal length of the fixed wing 3 is approximately equal to the width of the fixed wing base plate 10. The movable wing 9 is connected to the other half of the display device... The edge of the movable wing fixing base plate 12 inside the body is fixed by a number of movable wing fixing holes 13. The longitudinal length of the movable wing 9 is approximately equal to the width of the movable wing fixing base plate 12. The fixed flat wing fixing base plate 10 and the movable wing fixing base plate 12 are fixed to each other and docked with the fixed flat wing 3 and the movable wing 9; thus, the "U"-shaped groove 2 and its supporting body 1 are hinged to the fixed flat wing fixing base plate 10 and the movable wing fixing base plate 12, which are opposite to the two halves of the body in the display device, thus forming the basic support structure of its hinge. The "U"-shaped groove 2 is approximately half an arc, which is the "screen space" in which the OLED flexible screen 14 enters in a teardrop shape when it is in an inward bending state. The space inside the "U"-shaped groove 2 is similar in size and depth to the inward bending arc R of the OLED flexible screen 14, measured in millimeters, but not equal. The depth cannot be filled by it, and there is still considerable space inside the "U"-shaped groove 2.The width of the OLED flexible screen 14 is exactly the same as the width of the inner wall of the "U"-shaped groove 2, allowing it to fit snugly and smoothly into and out of the "U"-shaped groove 2. Because the OLED flexible screen 14's inward bending arc R lies within the "U"-shaped groove 2 without being constrained by the stress of a typical hinge screen's rigid landing, the bending stress of the OLED flexible screen 14's inward bending arc R is fully absorbed. Upon exiting, the stress is completely released, restoring it to a flat state. Therefore, this OLED flexible screen 14 has no cause for creases and will not suffer damage. On the outer wall of the "U"-shaped groove 2, there are neatly arranged "U"-shaped groove outer surface bumps 15, evenly distributed across the entire curved surface. These "U"-shaped groove outer surface bumps 15 are raised and slightly convex, their height not obstructing the curved slide 6, and the curved slide plate 7 has room to move after the applied force overcomes internal frictional resistance. On the curved surface of the arc-shaped sliding plate 7, opposite to the outer raised dot 15 of the "U"-shaped groove, there are neatly arranged arc-shaped raised dots 16, evenly distributed across the entire arc surface. The raised dots 16 are slightly convex, creating a staggered effect with the raised dots 15 of the "U"-shaped groove, providing light friction and allowing the arc-shaped sliding plate 7 to stop at any time in the arc-shaped slideway 6 due to the frictional resistance generated between the raised dots 15 and 16. A "U"-shaped groove 17, approximately 1.5 mm wide, is formed at the center of the longitudinal bottom of the "U"-shaped groove 2. The "U"-shaped groove 17 extends to the outside, and its length is shorter than the length of the "U"-shaped groove 2. A sealing layer groove 18, approximately 1.5 mm wide, is formed at the center of the longitudinal bottom of the arc-shaped sealing layer 4. The bottom groove 18 of the cover layer extends to the outside, and its length is shorter than that of the arc-shaped cover layer 4. A bottom groove 19, approximately 1.5 mm wide, is located at the center of the longitudinal bottom of the arc-shaped slide plate 7. The bottom groove 19 also extends to the outside, and its length is shorter than that of the arc-shaped slide plate 7. This indicates that the "U"-shaped groove 17 and the bottom groove 18 of the cover layer can be aligned vertically and overlap, and when the bottom groove 19 is also located at the bottom of the arc shape, all three grooves overlap, are transparent, and are exposed to the outside. The outer shell 20 of the fixed flat wing, which connects to the fixed flat wing 3 and the half of the display device, and the outer shell 21 of the movable wing, which connects to the movable wing 9 and the half of the display device, have the following characteristics: the tail length of the outer shell 20 of the fixed flat wing does not exceed the edge of the adjacent bottom groove 18 of the arc-shaped cover layer 4. The tail section of the movable wing shell 21 extends beyond the near boundary of the exposed arc-shaped sealing layer 4 bottom groove 18, covering it and resting precisely at the end of the fixed flat wing shell 20. An inverted hook 22 is formed at the tail section of the movable wing shell 21. The hook 22 is millimeters long, and its width is approximately equal to the length of the "U"-shaped groove bottom groove 17, the sealing layer bottom groove 18, and the sliding plate bottom groove 19.When the bottom groove 17 of the U-shaped groove, the bottom groove 18 of the cover layer, and the bottom groove 19 of the sliding plate overlap vertically and are fully connected, the inverted hook 22 slides into the groove due to the elastic force of the outer shell material 21 at the movable wing, while the inverted hook pushes upward toward the interior of the U-shaped groove 2. A covering film 23 is made. It covers the top of the U-shaped groove 2, and the width of the covering film 23 is similar to the width of the U-shaped groove 2 and the width of the LED flexible screen 14, so that they can all lie inside the U-shaped groove 2. The covering film 23 is closely fitted to the bending R of the OLED flexible screen 14 and is pushed into the groove by the bending R of the OLED flexible screen 14. The covering film 23 is relatively thin and has a certain degree of elasticity, and its rubber hardness is less than 50 degrees when tested with a Shore hardness tester. The covering film 23 surrounds the fixed flat wing 3 and the movable wing 9 through the plane of the "U"-shaped groove 2, and is sandwiched inside between the fixed flat wing 3 and the movable wing 9, and between the fixed flat wing fixing base plate 10 and the movable wing fixing base plate 12, and is fixed together by several flat wing fixing holes 11 and several movable wing fixing holes 13. The covering film 23 is tightened and loosened according to the movement of the arc tension of the fixed flat wing 3 and the movable wing 9: when the OLED flexible screen 14 bends into the "U"-shaped groove 2, the covering film 23 is relatively loose, and the OLED flexible screen 14 gently touches the covering film 23 into the groove; when the OLED flexible screen 14 bends out of the "U"-shaped groove 2, the covering film 23 is relatively straightened and tightened, and the elasticity increases sharply. This also has the effect of supporting and straightening the OLED flexible screen 14 upward, so as not to collapse. A liquid-filled capsule 24, roughly the same size as the bottom half of the space inside the "U"-shaped groove 2, is molded. The liquid-filled capsule 24 is made of a non-vulcanizing, fluid, resilient, non-slip, and wear-resistant TPR composite thermoplastic rubber material, with a hardness below 30 on a Shore hardness tester. When the OLED flexible screen 14 bends into the "U"-shaped groove 2, the liquid-filled capsule 24, located at the bottom, is only lightly touched, overflowing the "U"-shaped groove 2 and remaining in a relatively soft state. When the outer shell 21 of the movable wing is subjected to force, the OLED flexible screen 14 bends out of the "U"-shaped groove 2, bringing the inverted hook 22 into and locking it in the overlapping "U"-shaped groove bottom groove 17, the sealing layer bottom groove 18, and the slide plate bottom groove 19. The inverted hook 22 then pushes upwards, and the liquid-filled capsule 24 is squeezed by the inserted foreign object. The "U"-shaped groove 2 is then filled with the liquid-filled capsule 24, or is in a saturated state. This supports the OLED flexible screen 14 so that it is lifted at the weakest point of the fold, preventing it from collapsing or deforming due to touch and affecting its flatness. On both sides of the curved end opposite the pivot 8 of the curved slide plate 7, a first elastic limiting piece 25 and a second elastic limiting piece 26, integrally formed with the curved slide plate 7, are excavated.It is hollowed out on three sides, and the root of each longitudinal length side is still connected to the arc-shaped sliding plate 7. They are the same size and symmetrical from left to right, with the opening facing the end of the pivot 8. The plate is about 1.5 mm wide and about 3 mm long. Its process is designed to have a certain outward expansion force. The force is suppressed within the arc-shaped slide 6, and when in a free state, the elastic force is released, and the first elastic limiting plate 25 and the second elastic limiting plate 26 extend outward to open. On the lower edges of the opening 5 on both sides of the arc-shaped sealing layer 4, there are first elastic limiting square holes 27 and second elastic limiting square holes 28. The width and height of the first elastic limiting square holes 27 and the second elastic limiting square holes 28 are slightly looser than the first elastic limiting plate 25 and the second elastic limiting plate 26, and are quite well matched. When the curved skateboard 7 reaches its root position, the first spring-loaded limiting piece 25 and the second spring-loaded limiting piece 26 fall precisely into the corresponding first spring-loaded limiting square hole 27 and the second spring-loaded limiting square hole 28, releasing their elasticity and simultaneously locking the curved skateboard 7 within the curved slide rail 6, thus preventing it from sliding off the track. A thin, wear-resistant coating layer 29 is applied to the curved skateboard 7 using a heat-sealing process to increase friction as it slides within the curved slide rail 6, resulting in a more refined hovering effect and opening / closing feel.

Claims

1. A crease-free folding screen single-axis sliding hinge, comprising a supporting body (1) and its material, structure, and accessories, characterized in that, The supporting body (1) is made of metal or high-strength rigid synthetic plastic, which has the characteristics of being rigid, tough, ultra-thin, and lightweight. The main body of the supporting body (1) is shaped like a semi-circular arc R "U" shaped groove (2) with an opening at the top and both ends blocked. It is long and straight with the opening on all four sides at the same horizontal plane. A fixed flat wing (3) extends outward from the left side of the "U" shaped groove (2). The fixed flat wing (3) is in a horizontal straight line with the opening surface of the "U" shaped groove (2). The longitudinal length of the fixed flat wing (3) is the same as the longitudinal length of the "U" shaped groove (2). On the outer arc surfaces of the "U"-shaped groove (2), an arc-shaped sealing layer (4) with a curvature close to its curvature is formed. The arc-shaped sealing layer (4) surrounds the three sides of the "U"-shaped groove (2) to form a plug. Only an open opening (5) is left out along the arc. The open opening (5) is exposed outside and is about the same length as the "U"-shaped groove (2). The opening width is about 1 mm and extends all the way to the upper opening plane of the "U"-shaped groove (2). Thus, an arc-shaped slide (6) is formed between the arc-shaped sealing layer (4), the open opening (5) and the outer wall of the "U"-shaped groove (2). An arc-shaped slide (7) is made that can pass through an arc-shaped slide track (6); the width of the arc-shaped slide (7) is close to the length of the "U"-shaped groove (2), and it can slide in an arc within the arc-shaped slide track (6); the arc length of the arc-shaped slide track (6) is close to the arc length of the "U"-shaped groove (2); a continuous rotating shaft (8) is made along the direction of the arc-shaped slide (7) on the outside of the arc-shaped slide (7), and a movable wing (9) is made along the outer edge of the rotating shaft (8). The width and length of the movable wing (9) are roughly equivalent to the left and right fixed flat wings (3); thus, the movable wing (9) is connected by the rotating shaft (8) to form a movable body; the movable wing (9) can rotate freely from 0 to 180 degrees. The fixed wing (3) is fixed to the edge of the fixed wing base plate (10) in one half of the display device through several wing fixing holes (11), and the longitudinal length of the fixed wing (3) is approximately equal to the width of the fixed wing base plate (10); the movable wing (9) is fixed to the edge of the movable wing base plate (12) in the other half of the display device through several movable wing fixing holes (13), and the longitudinal length of the movable wing (9) is approximately equal to the width of the movable wing base plate (10). (12) has a similar width; the fixed flat wing fixing base plate (10) and the movable wing fixing base plate (12) are fixed to each other and docked with the fixed flat wing (3) and the movable wing (9); at this point, the "U" shaped groove (2) and its supporting body (1) are connected to the fixed flat wing fixing base plate (10) and the movable wing fixing base plate (12) of the two halves of the display device at the same time through the hinge of the fixed flat wing (3) and the movable wing (9), thus forming the basic support structure of its hinge; The U-shaped groove (2) is approximately a semi-circular arc, which is the "screen space" into which the OLED flexible screen (14) enters in a teardrop shape when it is in an inward bending state; the space inside the U-shaped groove (2) is similar in size and depth to the inward bending arc R of the OLED flexible screen (14) entering it, measured in millimeters, but not equal, and the depth cannot be completely filled by it, leaving a considerable amount of space inside the U-shaped groove (2); the width of the OLED flexible screen (14) is just the same as The inner wall width of the "U"-shaped groove (2) is quite large, and it fits perfectly in the "U"-shaped groove (2) and moves in and out smoothly. Since the OLED flexible screen (14) bends into the "U"-shaped groove (2) when it folds inward, the bending arc R does not cause its bending arc to be constrained by the stress of "general hinge screen material stacking hard top hard landing". As a result, the bending stress of the OLED flexible screen (14) bending arc R when it folds inward is fully contained, and the stress is completely released when it leaves and it is restored to a flat state.

2. The crease-free folding screen single-axis sliding hinge according to claim 1, characterized in that, The outer wall of the "U"-shaped groove (2) has "U"-shaped groove outer pockmarks (15) arranged in a regular manner, evenly distributed on the entire arc surface; the "U"-shaped groove outer pockmarks (15) are raised, slightly convex, and the height is not so high as to block the arc-shaped slide (6), and the arc-shaped slide plate (7) has room to move after the applied force eliminates the internal friction resistance.

3. The crease-free folding screen single-axis sliding hinge according to claim 1, characterized in that, On the arc surface opposite to the outer raised dot (15) of the U-shaped groove on the arc-shaped slide plate (7), there are neatly arranged raised dot (16) on the arc surface, which are evenly distributed on the entire arc surface. The raised dot (16) is raised and slightly convex, and is staggered with the raised dot (15) of the U-shaped groove, so as to achieve the effect that the arc-shaped slide plate (7) can stop at any time in the arc-shaped slide (6) due to the frictional resistance generated between the raised dot (15) of the U-shaped groove and the raised dot (16).

4. The crease-free folding screen single-axis sliding hinge according to claim 1, characterized in that, A U-shaped groove (17) with a width of about 1.5 mm is opened at the middle of the longitudinal bottom of the U-shaped groove (2). The U-shaped groove (17) leads to the outside and the length of the U-shaped groove (17) is shorter than the length of the U-shaped groove (2).

5. The crease-free folding screen single-axis sliding hinge according to claim 1, characterized in that, A bottom groove (18) with a width of about 1.5 mm is opened at the middle of the longitudinal bottom of the arc-shaped capping layer (4). The bottom groove (18) leads to the outside, and the length of the bottom groove (18) is shorter than the length of the arc-shaped capping layer (4).

6. The crease-free folding screen single-axis sliding hinge according to claim 1, characterized in that, A groove (19) with a width of about 1.5 mm is opened in the middle of the longitudinal bottom of the curved skateboard (7). The groove (19) leads to the outside and the length of the groove (19) is shorter than the length of the curved skateboard (7). This shows that the "U"-shaped groove (17) and the cover layer groove (18) can be aligned and overlapped and are transparent. When the groove (19) is also located at the bottom of the curved skateboard, the three grooves overlap, are transparent, and are all exposed to the outside.

7. The crease-free folding screen single-axis sliding hinge according to claim 1, wherein the outer shell (20) of the fixed flat wing connected to the fixed flat wing (3) and the half of the display device, and the outer shell (21) of the movable wing connected to the movable wing (9) and the half of the display device, have the following characteristics: the tail length of the outer shell (20) of the fixed flat wing does not exceed the edge of the bottom groove (18) of the nearby arc-shaped cover layer (4); while the tail length of the outer shell (21) of the movable wing is longer than the near boundary of the exposed bottom groove (18) of the arc-shaped cover layer (4), and covers it, and also just abuts the end of the tail of the outer shell (20) of the fixed flat wing.

8. The crease-free folding screen single-axis sliding hinge according to claim 6, characterized in that, At the tail of the shell (21) of the movable wing section, there is an inverted hook (22). The hook length of the inverted hook (22) is in millimeters, and the width is equivalent to the length of the bottom groove (17) of the "U"-shaped groove, the bottom groove (18) of the cover layer and the bottom groove (19) of the sliding plate. When the bottom groove (17) of the "U"-shaped groove, the bottom groove (18) of the cover layer and the bottom groove (19) of the sliding plate overlap vertically and the three channels are connected, the inverted hook (22) slides into the groove with the elastic force of the shell (21) material of the movable wing section itself, and at the same time the inverted hook is pushed upward towards the interior of the "U"-shaped groove (2).

9. The crease-free folding screen single-axis sliding hinge according to claim 1, characterized in that, A covering membrane (23) is made and covers the top of the "U"-shaped groove (2). The width of the covering membrane (23) is similar to the width of the "U"-shaped groove (2) and the width of the LED flexible screen (14), and they can all fit into the "U"-shaped groove (2). The covering membrane (23) is closely fitted to the bending R of the OLED flexible screen (14) and is pushed into the groove by the bending R of the OLED flexible screen (14). The covering membrane (23) is relatively thin and has a certain degree of elasticity. The rubber compound has a hardness of less than 50 degrees under the Shore hardness tester; the covering membrane (23) surrounds the outside of the fixed flat wing (3) and the movable wing (9) through the plane of the "U" shaped groove (2), and is sandwiched inside between the fixed flat wing (3) and the movable wing (9) and the fixed flat wing fixing base plate (10) and the movable wing fixing base plate (12), and is fixed together through several flat wing fixing holes (11) and several movable wing fixing holes (13); The covering membrane (23) is tightened and loosened in response to the changes in the arc tension of the fixed flat wings (3) and the movable wings (9): when the fold R of the OLED flexible screen (14) enters the "U"-shaped groove (2), the covering membrane (23) is relatively loose, and the OLED flexible screen (14) gently touches the covering membrane (23) into the groove; when the fold R of the OLED flexible screen (14) slides out of the "U"-shaped groove (2), the covering membrane (23) is relatively stretched and tightened, and the elasticity increases sharply. This also has the effect of supporting and straightening the OLED flexible screen (14) upwards, so that it does not collapse.

10. The crease-free folding screen single-axis sliding hinge according to claim 1, characterized in that, A liquid-filled capsule (24) with a size equivalent to the bottom half of the space inside the "U"-shaped groove (2) is made. The liquid-filled capsule (24) is made of TPR composite thermoplastic rubber material that does not require vulcanization, has a certain fluidity, resilience, anti-slip and wear resistance. Its rubber hardness is below 30 degrees when tested by a Shore hardness tester. When the fold R of the OLED flexible screen (14) enters the "U"-shaped groove (2), the liquid filling capsule (24) is at the bottom and is only gently touched, overflowing the "U"-shaped groove (2) and is in a relatively soft state; when the outer shell (21) of the movable wing is subjected to force, the fold R of the OLED flexible screen (14) leaves the "U"-shaped groove (2), and brings the top hook (22) into and gets stuck in the bottom groove (17), bottom groove (18) of the overlapping "U"-shaped groove and the bottom groove (19) of the slide plate. When the top hook (22) pushes up, the liquid filling capsule (24) is squeezed by the foreign object inserted, and the "U"-shaped groove (2) is filled with the liquid filling capsule (24) or is in a saturated state of being nearly full. This is to support the OLED flexible screen (14) to be lifted at the weak point of the fold, so that it will not collapse and deform due to touch and affect its flatness.

11. The crease-free folding screen single-axis sliding hinge according to claim 1, characterized in that, On both sides of the arc-shaped end opposite to the pivot (8) of the arc-shaped slide (7), a first elastic limiting plate (25) and a second elastic limiting plate (26) connected to the arc-shaped slide (7) are excavated. They are hollow on three sides, and the root of each longitudinal length side is still connected to the arc-shaped slide (7). They are the same size and symmetrical from left to right. The opening faces the pivot (8) end. The plate is about 1.5 mm wide and about 3 mm long. The process is designed to have a certain outward expansion force. The force is suppressed in the arc-shaped slide (6), and when it is in a free state, the elastic force is released. The first elastic limiting plate (25) and the second elastic limiting plate (26) extend outward. On the lower edges of the opening (5) of the arc-shaped cover layer (4), there are a first elastic limiting square hole (27) and a second elastic limiting square hole (28). The width and height of the first elastic limiting square hole (27) and the second elastic limiting square hole (28) are slightly looser than the first elastic limiting piece (25) and the second elastic limiting piece (26), and they are quite well matched. When the arc-shaped slide plate (7) slides to the root position, the first elastic limiting piece (25) and the second elastic limiting piece (26) fall into the corresponding first elastic limiting square hole (27) and the second elastic limiting square hole (28), and their elasticity is released. At the same time, the arc-shaped slide plate (7) is stuck in the arc-shaped slide rail (6), thereby preventing the arc-shaped slide plate (7) from sliding off the rail.

12. The crease-free folding screen single-axis sliding hinge according to claim 1, characterized in that, A thin, wear-resistant coating layer (29) is wrapped on the curved skateboard (7) using a heat-sealing adhesive process to increase the friction of the curved skateboard (7) when it slides in the curved track (6), making the hovering effect and opening and closing feel more textured.

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