Folding hinge for mobile phone

Abstract

The application relates to a mobile phone outer folding screen rotating shaft which is provided with a connecting base, connecting plates arranged on the two sides of the connecting base, rotating assemblies arranged on the connecting base, rotating connection of the connecting plates on the connecting base, the rotating assembly comprising a limiting plate, a positioning shaft, a rotating plate, a sliding plate and a reset spring, rotating connection of each rotating plate on the corresponding positioning shaft, parallel arrangement of the sliding direction of each sliding plate with the axis of the positioning shaft, the first tooth part on the surface of each sliding plate away from the reset spring and circumferentially distributed on the sliding plate along the axis of the corresponding positioning shaft, the second tooth part on the rotating plate corresponding to each first tooth part and capable of being connected with the first tooth part, rotating connection of each connecting plate on the connecting base through the rotating plate and the positioning shaft, and self-locking of each sliding plate through the continuous force of the reset spring and the cooperation of each first tooth part and the corresponding second tooth part. The application is convenient, practical and has a clever structure.

Description

Technical Field

[0001] This invention relates to the field of outward-folding screen mobile phones, and specifically designs an outward-folding screen hinge for mobile phones. Background Technology

[0002] With the continuous advancement and expansion of mobile terminal technology, coupled with the arrival of the 5G era, people are becoming increasingly reliant on mobile terminals. Nowadays, with the constant updates and replacements of various chat and video software, people feel that conventional touchscreen phones or tablets are no longer sufficient, mainly because the size of mobile terminals limits screen size.

[0003] To address this problem, flexible screens were invented and applied to mobile devices. Through a folding design, these devices can meet portability requirements while also expanding their screens when needed. The key to achieving this lies in the design of the hinge mechanism. Currently, the hinge mechanisms of foldable mobile devices often have complex mechanical structures. To achieve synchronous flipping and a smooth, tactile feel within a limited space, different mechanical components are frequently required.

[0004] However, these components in the existing shaft occupy a lot of internal space, which increases the overall thickness and weight of the shaft. Even a slight error between the parts can cause the entire shaft to be scrapped, which is very unsafe. Summary of the Invention

[0005] The purpose of this invention is to provide a hinge for outward-folding screens of mobile phones, which can effectively optimize the internal space of the hinge, with a clever structure and convenient and practical features.

[0006] The technical solution to achieve the objective of this invention is as follows: This invention has a connecting base; both sides of the connecting base are provided with connecting plates that can be connected to a mobile phone screen; the connecting base is provided with multiple rotating components distributed along the extending direction of the connecting base; the connecting plates on both sides are rotatably connected to the connecting base through each rotating component; each rotating component includes two opposing limiting plates, positioning shafts fixed to the two limiting plates and arranged in parallel, two opposing rotating plates, two opposing sliding plates slidably connected to the two positioning shafts, and a return spring sleeved on each positioning shaft; the axis of each positioning shaft is parallel to the extending direction of the connecting base; each rotating plate is arranged along the corresponding positioning shaft. The axis is rotatably connected to the corresponding positioning shaft, and one end of each rotating plate is pressed against the limiting plate. Two sliding plates are located between the two rotating plates. The sliding direction of each sliding plate is parallel to the axis of the positioning shaft. Each return spring is located between the two sliding plates. Each sliding plate has a first convex tooth distributed circumferentially along the axis of the corresponding positioning shaft on the surface opposite to the return spring. The rotating plate has a second convex tooth corresponding to each first convex tooth and capable of engaging with the first convex tooth. Each connecting plate is rotatably connected to the connecting base through the engagement of the rotating plate and the positioning shaft. The return spring continuously applies force to each sliding plate, and the engagement of each first convex tooth with the corresponding second convex tooth provides self-locking.

[0007] Furthermore, the aforementioned rotating plate includes two rotating sleeves that can pass through the same positioning shaft and be rotatably connected to the positioning shaft, and a plate body that can connect the two rotating sleeves into one piece. One end of each rotating sleeve is pressed against the corresponding limiting plate. Each second protruding tooth is provided on the end of each rotating sleeve away from the limiting plate, and each second protruding tooth is coaxially arranged with the rotating sleeve. The sliding plate and the return spring are located between the two rotating sleeves. The rotating plate achieves self-locking after rotation through the pressing of the rotating sleeve against the limiting plate, the continuous force of the return spring on each sliding plate, and the cooperation of the first and second protruding teeth.

[0008] Furthermore, the outer wall of any rotating sleeve on the same positioning shaft is provided with a first transmission tooth that is integrally formed with the rotating sleeve and coaxially arranged, and the outer wall of the opposite rotating sleeve on the other positioning shaft is provided with a second transmission tooth that corresponds to and cooperates with the first transmission tooth. The oppositely arranged rotating plates rotate towards each other through the transmission cooperation of the first transmission tooth and the second transmission tooth.

[0009] Furthermore, each plate has guide sliders integrally formed with the plate on both sides, and each connecting plate has guide grooves for the guide sliders to slide. Each guide groove is not horizontally set, and the guide grooves extend from the connecting plate to the outside of the connecting plate. The connecting plate slides and connects with the connecting plate through the cooperation of each guide slider and the corresponding guide groove.

[0010] Furthermore, each positioning shaft has a limiting plate extending from both ends, and a connecting block is provided between two adjacent rotating components. Both ends of each connecting block are pressed against the corresponding limiting plate. Both ends of each connecting block are provided with positioning grooves into which the positioning shafts can extend. Each connecting block is provided with a cover plate. Each connecting block is fixed to the connecting base by the cooperation of each positioning shaft and the positioning groove, as well as the pressing of the cover plate against the positioning shaft.

[0011] Furthermore, each connecting plate is provided with a side baffle that is arranged opposite to each other. Each side baffle extends from one end of the connecting plate to the other end along the extension direction of the connecting plate, and a gap with a fixed width is formed between the two side baffles. An upper baffle that can cover each rotating component is fixedly installed in the gap. The upper baffle is fixed on the connecting base. Each connecting plate is provided with multiple mounting strips that are integrally formed with the connecting plate. The extension direction of the mounting strips is perpendicular to the extension direction of the connecting plate. The side baffles are provided with mounting slots into which the mounting strips can be inserted. Each side baffle is fixedly installed on the corresponding connecting plate through the cooperation of each mounting strip and mounting slot.

[0012] Furthermore, each side baffle has multiple intermediate blocks fixedly installed at its bottom. Each intermediate block has a rotatable limiting block, and each limiting block has a pin fixedly installed with the same extension direction as the connecting base. The intermediate blocks have pin holes through which the pins can pass. Each limiting block is rotatably connected to the intermediate block through the cooperation of the pins and pin holes. The end of each limiting block away from the intermediate block is rotatably connected to the connecting block. Each limiting block has a limiting shaft, and the axis of the limiting shaft is parallel to the extension direction of the connecting base. Each connecting plate has a limiting through groove, and each limiting through groove is horizontally arranged and its extension direction is perpendicular to the extension direction of the connecting base. Each side baffle is slidably connected to the connecting plate through the rotatable connection of the limiting block and the connecting block, and through the sliding cooperation of the limiting shaft and the limiting through groove.

[0013] Furthermore, a flip base is provided between the aforementioned connecting base and each connecting plate, and each flip base extends from one end of the connecting base to the other end. A limiting component is provided between each connecting block and the connecting plate. The limiting component includes an intermediate block fixed on the flip base, a first flip arc block and a second flip arc block fixed on both sides of the intermediate block. The connecting block is provided with a first flip arc groove corresponding to the first flip arc block, and the connecting plate is provided with a second flip arc groove corresponding to the second flip arc block. Each connecting plate is rotatably connected to the connecting base through the rotational engagement of the second flip arc block along the virtual axis and the second flip arc groove, and the rotational engagement of the first flip arc block along the virtual axis and the first flip arc groove.

[0014] Furthermore, both ends of the aforementioned connecting base are provided with a first arc-shaped end cap, and both ends of each flip base are provided with a second arc-shaped end cap. After each flip base is flipped, the projection of each second arc-shaped end cap coincides with the projection of the first arc-shaped end cap.

[0015] The present invention has positive effects: (1) The present invention sets up a rotating component and sets a reset spring on the positioning shaft. The sliding plate is pushed outward by the continuous force of the reset spring. During the sliding process, the sliding plate rotates and locks itself through the cooperation of the first convex tooth and the second convex tooth on the rotating plate. This can effectively ensure the stability of the connection between the rotating plate and the positioning shaft and avoid axial displacement of the rotating plate during rotation. At the same time, the reset spring is set on the positioning shaft and located between the two sliding plates, which greatly saves the internal space of the rotating shaft and solves the problem that the compact structure of the parts in the prior art is prone to collision damage, resulting in the scrapping of the rotating shaft. The overall structure is ingenious and reasonably arranges the internal space while ensuring the overall safety of the rotating shaft. It is convenient and practical.

[0016] (2) The present invention sets the rotating plate as a plate body and two rotating sleeves. The two rotating sleeves are used to limit the spatial position of the reset spring and the two sliding plates. One end of the rotating sleeve is pressed against the limiting plate. While further limiting the reset spring and the sliding plates, it also ensures that the axis of the rotating plate will not slide during the rotation process, which is safe and stable.

[0017] (3) The present invention provides a first transmission tooth on the outer wall of the rotating sleeve and a second transmission tooth on the adjacent rotating sleeve. The transmission cooperation between the first transmission tooth and the second transmission tooth drives the two opposing rotating plates to rotate in opposite directions or in opposite directions, which effectively ensures the synchronicity of the rotation of the two rotating plates, and also ensures the smooth and efficient rotation of each rotating plate, making it convenient and practical.

[0018] (4) The present invention provides guide sliders on both sides of the plate and guide grooves on the connecting plate. The cooperation of the guide sliders and guide grooves can guide the movement direction of the plate during the rotation of the plate, and can also smoothly drive the connecting plate to rotate. The structure is ingenious, practical and convenient.

[0019] (5) The present invention sets a connecting block between adjacent rotating components, and fixes the positioning shaft by the cooperation of the positioning groove and the cover plate on the connecting block, which further ensures the overall stability and firmness and greatly improves the service life of the rotating shaft.

[0020] (6) By setting a side baffle on the connecting plate and an upper baffle on the connecting base, the present invention can effectively ensure that no impurities, dust or other debris will enter the shaft during use and affect its use. On the other hand, the installation of the side baffle can be facilitated by the cooperation of the mounting strip and the mounting slot. The connection between the side baffle and the connecting plate also ensures the overall stability and the cleanliness inside the shaft. The fixed gap between the two side baffles also ensures that there will be no interference when the side baffles rotate. In addition, it also ensures that each side baffle can rotate along the corresponding side of the upper baffle, further ensuring the smooth rotation of the connecting plate and the cleanliness inside the shaft.

[0021] (7) The present invention provides an intermediate block and a limiting block at the bottom of the side baffle. The rotational connection between the intermediate block and the limiting block can effectively compensate for the angle difference generated during the rotation. The limiting block is rotatably set on the connecting block, and a limiting shaft is set on the limiting block. Through the cooperation of the limiting shaft and the limiting through groove, the rotation of the connecting plate is further guided, which effectively ensures the smooth connection between the side baffle and the connecting plate, as well as the smoothness of the rotation of the connecting plate. It is efficient and practical.

[0022] (8) The present invention sets a limiting component on each flip base, and limits the rotation of the connecting plate by the cooperation of the first flip arc block and the first flip arc groove, and limits the flip base after rotation by the cooperation of the second flip arc block and the second flip arc groove. On the one hand, the connecting plate can be guided to flip during the rotation, and on the other hand, the flip is limited, ensuring the overall safety and making it convenient and practical.

[0023] (9) The present invention provides a first arc-shaped end cap at both ends of the connecting base and a second arc-shaped end cap at both ends of the flip base. After flipping, the second arc-shaped flip cap is hidden behind the first arc-shaped end cap. On the one hand, it enhances the overall aesthetics, and on the other hand, it can effectively prevent the mechanism inside the rotating shaft from being exposed. It plays a good role in preventing moisture and dust. The structure is ingenious, efficient and convenient. Attached Figure Description

[0024] To make the content of this invention easier to understand, the invention will be further described in detail below with reference to specific embodiments and accompanying drawings, wherein...

[0025] Figure 1 This is a schematic diagram of the overall structure of the outward-folding screen hinge in the present invention;

[0026] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0027] Figure 3 for Figure 1 Enlarged view of point B in the middle;

[0028] Figure 4 for Figure 1 Enlarged view of point C in the middle;

[0029] Figure 5 This is a front view of the overall structure of the outward-folding screen hinge of the mobile phone in this invention;

[0030] Figure 6 for Figure 5 Isometric sectional view at point AA;

[0031] Figure 7 This is a schematic diagram of the connection structure between the intermediate block and the limiting block in this invention;

[0032] Figure 8 This is a schematic diagram of the overall structure of the transfer plate in this invention;

[0033] Figure 9 This is a schematic diagram of the overall structure of the sliding plate in this invention;

[0034] Figure 10 This is a schematic diagram of the overall structure of the side baffle and the upper baffle connected to the connecting plate in this invention;

[0035] Figure 11 for Figure 10 Enlarged view of point D in the middle;

[0036] Figure 12 This is a schematic diagram of the overall structure of the side baffle in this invention;

[0037] Figure 13 for Figure 12 Enlarged view at point E in the middle;

[0038] Figure 14 This is a schematic diagram of the overall structure of the mobile phone when the hinge is not open in this invention;

[0039] Figure 15 This is a schematic diagram of the overall structure of the mobile phone when the hinge is opened to 90° in this invention;

[0040] Figure 16 This is a schematic diagram of the overall structure of the mobile phone when the hinge is opened to 135° in this invention;

[0041] Figure 17 This is a schematic diagram of the overall structure of the mobile phone when the hinge is opened to 180° in this invention. Detailed Implementation

[0042] See Figures 1 to 17The present invention includes a connecting base 1; both sides of the connecting base 1 are provided with connecting plates 3 that can be connected to a mobile phone screen. The connecting base 1 has multiple rotating components 4 distributed along its extending direction. The connecting plates 3 on both sides are rotatably connected to the connecting base 1 through the rotating components 4. Each rotating component 4 includes two opposing limiting plates 41, positioning shafts fixed to the two limiting plates 41 and arranged in parallel, two opposing rotating plates 42, two opposing sliding plates 43 slidably connected to the two positioning shafts, and a return spring 44 sleeved on each positioning shaft. The axis of each positioning shaft is parallel to the extending direction of the connecting base 1, and each rotating plate 42 is rotatably connected to the corresponding positioning shaft along its axis. Each rotating plate 42 has one end pressed against the limiting plate 41, and two sliding plates 43 are located between the two rotating plates 42. The sliding direction of each sliding plate 43 is parallel to the axis of the positioning shaft. Each return spring 44 is located between the two sliding plates 43. Each sliding plate 43 has a first protruding tooth 46 distributed circumferentially along the axis of the corresponding positioning shaft on the surface opposite to the return spring 44. The rotating plate 42 has a second protruding tooth 45 corresponding to each first protruding tooth 46 and capable of engaging with the first protruding tooth 46. Each connecting plate 3 is rotatably connected to the connecting base 1 through the engagement of the rotating plate 42 and the positioning shaft. The return spring 44 applies continuous force to each sliding plate 43, and the engagement of each first protruding tooth 46 with the corresponding second protruding tooth 45 creates a self-locking mechanism.

[0043] The rotating plate 42 includes two rotating sleeves 421 that can pass through the same positioning shaft and be rotatably connected to the positioning shaft, and a plate body 422 that can connect the two rotating sleeves 421 into one piece. One end of each rotating sleeve 421 is pressed against the corresponding limiting plate 41. Each second protruding tooth 45 is provided on the end of each rotating sleeve 421 away from the limiting plate 41, and each second protruding tooth 45 is coaxially arranged with the rotating sleeve 421. The sliding plate 43 and the return spring 44 are located between the two rotating sleeves 421. The rotating plate 42 achieves self-locking after rotation by the pressing of the rotating sleeve 421 against the limiting plate 41, the continuous force of the return spring 44 on each sliding plate 43, and the cooperation of the first protruding tooth 46 and the second protruding tooth 45.

[0044] The outer wall of any rotating sleeve 421 on the same positioning shaft is provided with a first transmission tooth 47 integrally formed with the rotating sleeve 421 and coaxially arranged. The outer wall of the opposite rotating sleeve 421 on the other positioning shaft is provided with a second transmission tooth 48 corresponding to and cooperating with the first transmission tooth 47. The oppositely arranged rotating plates 42 rotate towards each other through the transmission cooperation of the first transmission tooth 47 and the second transmission tooth 48.

[0045] Each plate 422 has a guide slider 423 integrally formed with the plate 422 on both sides. Each connecting plate 3 has a guide groove 31 for sliding of the guide slider 423. Each guide groove 31 is not horizontally set and extends from the connecting plate 3 to the outside of the connecting plate 3. The connecting plate 3 is slidably connected to the connecting plate 3 through the cooperation of each guide slider 423 and the corresponding guide groove 31.

[0046] Both ends of each positioning shaft extend out of the limiting plate 41. A connecting block 5 is provided between two adjacent rotating components 4. Both ends of each connecting block 5 are pressed against the corresponding limiting plate 41. Both ends of each connecting block 5 are provided with positioning grooves into which the positioning shaft can extend. Each connecting block 5 is provided with a cover plate 6. Each connecting block 5 is fixed to the connecting base 1 by the cooperation of each positioning shaft and the positioning groove, and by the pressing of the cover plate 6 against the positioning shaft.

[0047] Each connecting plate 3 is provided with a side baffle 9 arranged opposite to each other. Each side baffle 9 extends from one end of the connecting plate 3 to the other end of the connecting plate 3 along the extension direction of the connecting plate 3. A gap with a fixed width is formed between the two side baffles 9. An upper baffle 10 that can cover each rotating component 4 is fixedly installed in the gap. The upper baffle 10 is fixed on the connecting base 1. Each connecting plate 3 is provided with a plurality of mounting strips 33 integrally formed with the connecting plate 3. The extension direction of the mounting strips 33 is perpendicular to the extension direction of the connecting plate 3. The side baffle 9 is provided with a mounting slot 91 into which the mounting strips 33 can be inserted. Each side baffle 9 is fixedly installed on the corresponding connecting plate 3 through the cooperation of each mounting strip 33 and the mounting slot 91.

[0048] Each side baffle 9 has multiple base plates fixedly installed at its bottom. Each base plate has a middle block 92 fixedly installed. Each middle block 92 has a rotatable limiting block 8. Each limiting block 8 has a pin 81 fixedly installed with the same extension direction as the connecting base 1. The middle block 92 has a pin hole 921 through which the pin 81 can pass. Each limiting block 8 is rotatably connected to the middle block 92 through the cooperation of the pin 81 and the pin hole 921. One end of each limiting block 8 away from the middle block is rotatably connected to the connecting block 5. Each limiting block 8 has a limiting shaft 82. The axis of the limiting shaft 82 is parallel to the extension direction of the connecting base 1. Each connecting plate 3 has a limiting through groove 32. Each limiting through groove 32 is horizontally arranged and its extension direction is perpendicular to the extension direction of the connecting base 1. Each side baffle 9 is slidably connected to the connecting plate 3 through the rotatable connection of the limiting block 8 and the connecting block 5, and the sliding cooperation of the limiting shaft 82 and the limiting through groove 32.

[0049] A flip base 2 is provided between the connecting base 1 and each connecting plate 3. Each flip base 2 extends from one end of the connecting base 1 to the other end. A limiting component 7 is provided between each connecting block 5 and the connecting plate 3. The limiting component 7 includes an intermediate block 71 fixed on the flip base 2, a first flip arc block 72 and a second flip arc block 73 fixed on both sides of the intermediate block 71. The connecting block 5 is provided with a first flip arc groove corresponding to the first flip arc block 72, and the connecting plate 3 is provided with a second flip arc groove corresponding to the second flip arc block 73. Each connecting plate 3 is rotatably connected to the connecting base 1 through the rotational cooperation of the second flip arc block 73 along the virtual axis and the second flip arc groove, and the cooperation of the first flip arc block 72 along the virtual axis and the first flip arc groove.

[0050] Both ends of the connecting base 1 are provided with a first arc-shaped end cap 11, and both ends of each flip base 2 are provided with a second arc-shaped end cap 21. After each flip base 2 is flipped, the projection of each second arc-shaped end cap 21 coincides with the projection of the first arc-shaped end cap 11.

[0051] The working principle of this invention: Before use, the mobile phone is in a closed state, and the angle formed by the mobile phone screens on the connecting plates 3 after folding is 0°. During the opening process, the mobile phone screen can be folded to any angle within 180°, such as 90° or 135°. During the opening process, the mobile phone screen drives the connecting plates 3 and the rotating plate 42 connected to the connecting plates 3 to rotate under the action of external force. During the rotation of the rotating plate 42, the first transmission tooth 47 and the second transmission tooth 48 cooperate through transmission to enable the two connecting plates 3 to rotate synchronously, thereby ensuring smooth rotation between the two connecting plates 3 and avoiding damage due to excessive force. During the rotation of the rotating plate 42, the return spring 44 continuously applies force to the sliding plate 43, pressing the first protruding tooth 46 on the sliding plate 43 against the second protruding tooth 45 on the rotating plate 42, thereby ensuring that the two connecting plates 3 can self-lock at any angle during rotation. On the one hand, it can effectively save internal installation space, and on the other hand, it can realize the folding and locking of the mobile phone screen at various free angles within 180°. The structure is ingenious, efficient and practical.

[0052] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above descriptions are merely specific embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A hinge for an outward-folding screen on a mobile phone, with a connecting base; characterized in that: Both sides of the connecting base are provided with connecting plates that can be connected to a mobile phone screen. The connecting base has multiple rotating components distributed along its extension direction. The connecting plates on both sides are rotatably connected to the connecting base via these rotating components. Each rotating component includes two opposing limiting plates, positioning shafts fixed to the two limiting plates and arranged in parallel, two opposing rotating plates, two opposing sliding plates slidably connected to the two positioning shafts, and a return spring sleeved on each positioning shaft. The axis of each positioning shaft is parallel to the extension direction of the connecting base, and each rotating plate is rotatably connected to the corresponding positioning shaft along its axis. On the shaft, one end of each rotating plate is pressed against the limiting plate, two sliding plates are located between the two rotating plates, the sliding direction of each sliding plate is parallel to the axis of the positioning shaft, each return spring is located between the two sliding plates, and each sliding plate has a first convex tooth distributed circumferentially along the axis of the corresponding positioning shaft on the surface opposite to the return spring. The rotating plate has a second convex tooth corresponding to each first convex tooth and can be connected with the first convex tooth. Each connecting plate is rotatably connected to the connecting base through the cooperation of the rotating plate and the positioning shaft, and self-locking is achieved by the continuous force applied to each sliding plate by the return spring and the cooperation between each first convex tooth and the corresponding second convex tooth. The rotating plate includes two rotating sleeves that can pass through the same positioning shaft and are rotatably connected to the positioning shaft, and a plate body that can connect the two rotating sleeves into one piece. One end of each rotating sleeve is pressed against the corresponding limiting plate. Each second protruding tooth is provided on the end of each rotating sleeve away from the limiting plate, and each second protruding tooth is coaxially arranged with the rotating sleeve. The sliding plate and the return spring are located between the two rotating sleeves. The rotating plate achieves self-locking after rotation through the pressing of the rotating sleeve against the limiting plate, the continuous force of the return spring on each sliding plate, and the cooperation of the first and second protruding teeth. The outer wall of any rotating sleeve on the same positioning shaft is provided with a first transmission tooth that is integrally formed with the rotating sleeve and coaxially arranged. The outer wall of the opposite rotating sleeve on the other positioning shaft is provided with a second transmission tooth that corresponds to and cooperates with the first transmission tooth. The oppositely arranged rotating plates rotate towards each other through the transmission cooperation of the first transmission tooth and the second transmission tooth. A flip base is provided between the connecting base and each connecting plate. Each flip base extends from one end of the connecting base to the other end. A limiting component is provided between each connecting block and the connecting plate. The limiting component includes an intermediate block fixed on the flip base, a first flip arc block and a second flip arc block fixed on both sides of the intermediate block. The connecting block is provided with a first flip arc groove corresponding to the first flip arc block, and the connecting plate is provided with a second flip arc groove corresponding to the second flip arc block. Each connecting plate is rotatably connected to the connecting base through the rotational engagement of the second flip arc block along the virtual axis and the second flip arc groove, and the rotational engagement of the first flip arc block along the virtual axis and the first flip arc groove. Both ends of the connecting base are provided with a first arc-shaped end cap, and both ends of each flip base are provided with a second arc-shaped end cap. After each flip base is flipped, the projection of each second arc-shaped end cap coincides with the projection of the first arc-shaped end cap.

2. The mobile phone outward-folding screen hinge according to claim 1, characterized in that: Each plate has guide sliders integrally formed with the plate on both sides, and each connecting plate has guide grooves for the guide sliders to slide. Each guide groove is not horizontal and extends from the connecting plate to the outside of the connecting plate. The connecting plate is slidably connected to the connecting plate through the cooperation of each guide slider and the corresponding guide groove.

3. The mobile phone outward-folding screen hinge according to claim 2, characterized in that: Each positioning shaft has a limiting plate extending from both ends. A connecting block is provided between two adjacent rotating components. Both ends of each connecting block are pressed against the corresponding limiting plate. Both ends of each connecting block are provided with positioning grooves into which the positioning shafts can extend. Each connecting block is provided with a cover plate. Each connecting block is fixed to the connecting base by the cooperation of each positioning shaft and the positioning groove, as well as the pressing of the cover plate against the positioning shaft.

4. The mobile phone outward-folding screen hinge according to claim 3, characterized in that: Each connecting plate is provided with a side baffle that is positioned opposite each other. Each side baffle extends from one end of the connecting plate to the other end along the extension direction of the connecting plate, and a gap with a fixed width is formed between the two side baffles. An upper baffle that can cover each rotating component is fixedly installed in the gap. The upper baffle is fixed on the connecting base. Each connecting plate is provided with multiple mounting strips that are integrally formed with the connecting plate. The extension direction of the mounting strips is perpendicular to the extension direction of the connecting plate. The side baffles are provided with mounting slots into which the mounting strips can be inserted. Each side baffle is fixedly installed on the corresponding connecting plate by the cooperation of the mounting strips and the mounting slots.

5. The mobile phone outward-folding screen hinge according to claim 4, characterized in that: Each side baffle has multiple intermediate blocks fixedly mounted at its bottom. Each intermediate block has a rotatable limit block, and each limit block has a pin fixedly mounted on it. The pins extend in the same direction as the connecting base. Each intermediate block has a pin hole through which the pins pass. Each limit block is rotatably connected to the intermediate block through the engagement of the pins and pin holes. The end of each limit block away from the intermediate block is rotatably connected to the connecting block. Each limit block has a limit shaft, the axis of which is parallel to the extension direction of the connecting base. Each connecting plate has a limit slot, which is horizontally positioned and extends perpendicular to the extension direction of the connecting base. Each side baffle is slidably connected to the connecting plate through the rotatable connection of the limit blocks and the connecting blocks, and through the sliding engagement of the limit shafts and the limit slots.

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